/* roulang page: index */
:root{
  --brand-700:#0B4FB3;
  --brand-600:#1466D6;
  --brand-500:#3A86F0;
  --brand-100:#E4EFFF;
  --brand-50:#F2F7FF;
  --accent-600:#E8650A;
  --accent-500:#FF7A1A;
  --accent-100:#FFEEDF;
  --mint-500:#12BFA0;
  --ink-900:#0E1A2B;
  --ink-700:#33455C;
  --ink-500:#66788F;
  --line:#E2E9F2;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --success:#12B47A;
  --warn:#E8A21A;
  --error:#E0554A;
  --r-card:14px;
  --r-sm:10px;
  --r-img:12px;
  --shadow-sm:0 1px 2px rgba(14,26,43,.06);
  --shadow-md:0 8px 24px -8px rgba(14,26,43,.12);
  --shadow-lg:0 18px 40px -16px rgba(20,102,214,.28);
  --container:1200px;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"DIN Alternate","Barlow",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.38}
p{margin:0}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--brand-700)}
img{max-width:100%;display:block;border:0;background:var(--brand-50)}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--white{background:var(--surface)}
.section--tint{background:var(--brand-50)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.9);
  backdrop-filter:saturate(180%) blur(10px);
  transition:height .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.site-header.is-scrolled{
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-sm);
}
.nav-inner{
  display:flex;align-items:center;gap:24px;
  height:76px;
  transition:height .2s ease-out;
}
.site-header.is-scrolled .nav-inner{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:28px;height:28px;border-radius:9px;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500));
  position:relative;
  box-shadow:0 6px 14px -6px rgba(20,102,214,.6);
}
.brand-mark::after{
  content:"";position:absolute;inset:7px 8px auto 8px;height:3px;border-radius:2px;
  background:#fff;box-shadow:0 5px 0 -1px rgba(255,255,255,.75),0 10px 0 -2px rgba(255,255,255,.45);
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 12px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--ink-700);white-space:nowrap;
  transition:color .18s ease-out,background .18s ease-out;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-50)}
.nav-link.is-active{color:var(--brand-600);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-600);
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.mega-wrap{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 14px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;color:var(--ink-700);font-size:14px;font-weight:500;cursor:pointer;
  transition:all .18s ease-out;
}
.mega-trigger:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-50)}
.mega-trigger i{font-size:12px;transition:transform .18s ease-out}
.mega-wrap:hover .mega-trigger i,
.mega-wrap:focus-within .mega-trigger i,
.mega-panel.is-open ~ .mega-trigger i{transform:rotate(180deg)}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:760px;
  background:#fff;border-radius:12px;box-shadow:var(--shadow-lg);
  border-top:2px solid var(--brand-600);
  padding:24px;
  display:grid;grid-template-columns:1.1fr 1.3fr 1fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(-4px);
  transition:opacity .16s ease-out,transform .16s ease-out,visibility .16s;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel,
.mega-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col-title{
  font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--ink-500);margin-bottom:12px;text-transform:uppercase;
}
.mega-list li{margin-bottom:8px}
.mega-list a{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--ink-700);padding:5px 0;
}
.mega-list a:hover{color:var(--brand-600)}
.mega-dot{width:6px;height:6px;border-radius:50%;background:var(--brand-500);flex:0 0 auto}
.mega-posts li{padding:9px 0;border-bottom:1px dashed var(--line)}
.mega-posts li:last-child{border-bottom:0}
.mega-post-title{
  display:block;font-size:14px;color:var(--ink-900);font-weight:500;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.mega-post-title:hover{color:var(--brand-600)}
.mega-post-meta{font-size:12px;color:var(--ink-500);margin-top:2px}
.mega-card{
  display:block;background:var(--brand-50);border-radius:12px;padding:18px;
  border:1px solid var(--brand-100);height:100%;
}
.mega-card strong{display:block;font-size:15px;color:var(--ink-900);margin-bottom:6px}
.mega-card p{font-size:13px;color:var(--ink-500);line-height:1.7}
.mega-card span{display:inline-block;margin-top:12px;font-size:13px;font-weight:600;color:var(--brand-600)}
.hamburger{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;cursor:pointer;
  color:var(--ink-900);font-size:18px;
  transition:all .18s ease-out;
}
.hamburger:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-50)}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,26,43,.45);
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s;
  z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:88vw;max-width:360px;
  background:#fff;z-index:95;
  transform:translateX(100%);transition:transform .24s ease-out;
  display:flex;flex-direction:column;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;border-bottom:1px solid var(--line);
}
.drawer-close{
  width:38px;height:38px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:#fff;cursor:pointer;color:var(--ink-700);font-size:16px;
}
.drawer-close:hover{border-color:var(--brand-500);color:var(--brand-600)}
.drawer-body{padding:20px}
.drawer-group-title{
  font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--ink-500);
  margin:18px 0 8px;
}
.drawer-group-title:first-child{margin-top:0}
.drawer-link{
  display:block;padding:12px 14px;border-radius:var(--r-sm);
  font-size:15px;color:var(--ink-700);font-weight:500;
}
.drawer-link:hover,.drawer-link.is-active{background:var(--brand-50);color:var(--brand-600)}
.drawer-cta{margin-top:22px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:all .18s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 8px 20px -12px rgba(20,102,214,.9)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 8px 20px -12px rgba(232,101,10,.9)}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-700)}
.btn-white{background:#fff;border-color:rgba(255,255,255,.6);color:var(--brand-700)}
.btn-white:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:active{transform:translateY(0)}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-600);padding:0;
}
.btn-link:hover{color:var(--brand-700);text-decoration:underline}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1.6;
  background:var(--brand-100);color:var(--brand-700);
}
.badge-sm{font-size:12px;padding:2px 10px}
.badge-accent{background:var(--accent-100);color:var(--accent-600)}
.badge-mint{background:rgba(18,191,160,.14);color:#0E9E85}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:620px;
  display:flex;align-items:center;
  background-image:linear-gradient(100deg,rgba(11,79,179,.86) 0%,rgba(11,79,179,.7) 42%,rgba(14,26,43,.38) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  overflow:hidden;
}
.hero-inner{
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;
  padding:96px 0 112px;
}
.hero-copy{max-width:660px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.16);color:#EAF3FF;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  border:1px solid rgba(255,255,255,.22);
  margin-bottom:20px;
}
.hero-eyebrow i{color:#FFD8B5}
.hero h1{
  font-size:clamp(28px,4vw,44px);
  line-height:1.28;letter-spacing:-.02em;
  color:#fff;
  max-width:92%;
}
.hero-sub{
  margin-top:18px;max-width:560px;
  font-size:17px;line-height:1.85;
  color:rgba(255,255,255,.88);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-panel{
  background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);
  padding:26px;
}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
  padding-bottom:20px;border-bottom:1px solid var(--line);
}
.hero-stat b{
  display:block;font-family:var(--font-num);font-size:26px;font-weight:700;
  color:var(--ink-900);letter-spacing:-.02em;line-height:1.3;
}
.hero-stat span{display:block;font-size:13px;color:var(--ink-500);margin-top:2px}
.hero-count{margin-top:22px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.hero-count-label{font-size:14px;font-weight:600;color:var(--ink-900)}
.hero-count-label small{display:block;font-size:12px;font-weight:400;color:var(--ink-500);margin-top:2px}
.hero-count-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:700;color:var(--brand-600);letter-spacing:.01em;
}
.hero-bar{margin-top:20px}
.hero-bar-head{display:flex;justify-content:space-between;font-size:13px;color:var(--ink-500);margin-bottom:8px}
.progress-track{
  height:8px;border-radius:999px;background:var(--brand-100);overflow:hidden;
}
.progress-fill{
  height:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent-500));
}

/* ---------- 通用板块头 ---------- */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:40px;flex-wrap:wrap;
}
.h2{
  position:relative;padding-left:16px;
  font-size:clamp(22px,2.4vw,30px);letter-spacing:-.01em;
}
.h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--brand-600);
}
.section-sub{margin-top:12px;padding-left:16px;font-size:15px;color:var(--ink-500);max-width:720px}

/* ---------- 能力板块 ---------- */
.ability-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:32px;align-items:stretch}
.ability-visual{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-md);min-height:360px;
}
.ability-visual img{width:100%;height:100%;object-fit:cover;min-height:360px}
.ability-visual-tag{
  position:absolute;left:20px;bottom:20px;
  background:rgba(255,255,255,.94);border-radius:12px;padding:14px 18px;
  box-shadow:var(--shadow-md);max-width:76%;
}
.ability-visual-tag b{display:block;font-size:16px;color:var(--ink-900)}
.ability-visual-tag span{font-size:13px;color:var(--ink-500)}
.ability-list{display:flex;flex-direction:column;gap:18px}
.ability-item{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.ability-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand-100)}
.ability-num{
  flex:0 0 auto;width:38px;height:38px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-100);color:var(--brand-700);
  font-family:var(--font-num);font-size:16px;font-weight:700;
}
.ability-item h3{font-size:18px;margin-bottom:6px;font-weight:600}
.ability-item p{font-size:15px;color:var(--ink-500);line-height:1.8}

/* ---------- 玩法时间轴 ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.timeline::before{
  content:"";position:absolute;left:22px;right:22px;top:26px;height:2px;
  background:repeating-linear-gradient(90deg,var(--brand-100) 0 10px,transparent 10px 20px);
  z-index:0;
}
.step{position:relative;z-index:1}
.step-badge{
  width:52px;height:52px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-100);color:var(--brand-700);
  font-family:var(--font-num);font-size:17px;font-weight:700;
  border:4px solid var(--surface);box-shadow:var(--shadow-sm);
  margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:8px;font-weight:600}
.step p{font-size:14.5px;color:var(--ink-500);line-height:1.8}

/* ---------- 奖励阶梯 ---------- */
.reward-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.reward-card{
  position:relative;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.reward-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.reward-card.is-top{border:2px solid var(--accent-500);background:linear-gradient(180deg,var(--accent-100) 0%,#fff 42%)}
.reward-flag{
  position:absolute;top:-13px;right:20px;
  background:var(--accent-500);color:#fff;font-size:12px;font-weight:700;
  padding:3px 12px;border-radius:999px;letter-spacing:.02em;
}
.reward-rank{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:var(--brand-100);color:var(--brand-700);
  font-family:var(--font-num);font-weight:700;font-size:15px;
  margin-bottom:14px;
}
.is-top .reward-rank{background:var(--accent-100);color:var(--accent-600)}
.reward-card h3{font-size:19px;margin-bottom:6px}
.reward-cond{font-size:13px;color:var(--ink-500);margin-bottom:16px}
.reward-list li{
  position:relative;padding-left:22px;font-size:14.5px;line-height:1.9;color:var(--ink-700);
}
.reward-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:var(--brand-600);
}
.is-top .reward-list li::before{background:var(--accent-500)}

/* ---------- 进度轨 ---------- */
.progress-board{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--shadow-sm);
  display:grid;grid-template-columns:1fr 180px;gap:32px;align-items:center;
}
.progress-board .progress-track{height:10px}
.progress-nodes{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:20px}
.node{display:flex;align-items:flex-start;gap:8px;font-size:14px;color:var(--ink-500)}
.node i{margin-top:5px;font-size:13px}
.node.is-done i{color:var(--success)}
.node.is-done{color:var(--ink-700)}
.node.is-now i{color:var(--accent-500)}
.node.is-now{color:var(--ink-900);font-weight:600}
.node.is-todo i{color:#B9C6D8}
.progress-percent{
  text-align:right;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:38px;font-weight:700;color:var(--ink-900);line-height:1.1;
}
.progress-percent span{display:block;font-family:var(--font-cn);font-size:13px;font-weight:400;color:var(--ink-500);margin-top:4px}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:28px;align-items:start}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.news-lead-media{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-50)}
.news-lead-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.news-lead:hover .news-lead-media img{transform:scale(1.03)}
.news-lead-body{padding:24px}
.news-lead-title{font-size:21px;line-height:1.5;margin:12px 0 10px}
.news-lead-title a{color:var(--ink-900)}
.news-lead-title a:hover{color:var(--brand-600)}
.news-lead-sum{font-size:15px;color:var(--ink-500);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--ink-500);margin-top:16px}
.news-meta .arrow{color:var(--brand-600);font-weight:600}
.news-list{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);padding:6px 22px;
}
.news-item{
  display:flex;align-items:center;gap:16px;
  padding:18px 0;border-bottom:1px solid var(--line);
  transition:background .18s ease-out;
}
.news-item:last-child{border-bottom:0}
.news-thumb{flex:0 0 auto;width:96px;height:64px;border-radius:var(--r-sm);overflow:hidden;background:var(--brand-50)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-item-body{min-width:0;flex:1}
.news-item-title{font-size:15.5px;font-weight:600;line-height:1.6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-item-title a{color:var(--ink-900)}
.news-item-title a:hover{color:var(--brand-600)}
.news-item .news-meta{margin-top:6px;gap:10px}
.news-item-arrow{flex:0 0 auto;color:var(--brand-500);transition:transform .18s ease-out}
.news-item:hover .news-item-arrow{transform:translateX(4px)}
.empty-state{
  text-align:center;padding:56px 24px;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-icon{
  width:56px;height:56px;border-radius:50%;background:var(--brand-100);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:20px;
}
.empty-state p{font-size:15px;color:var(--ink-500);margin-bottom:18px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);
  margin-bottom:12px;overflow:hidden;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item[open]{border-color:var(--brand-100);box-shadow:var(--shadow-sm)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;font-weight:400;color:var(--brand-600);
  transition:transform .2s ease-out;line-height:1;
}
.faq-item[open] summary::after{content:"–";transform:rotate(180deg)}
.faq-item summary:hover{background:var(--brand-50)}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--ink-700)}

/* ---------- 收尾 CTA ---------- */
.final-cta{
  max-width:880px;margin:0 auto;text-align:center;
  background:var(--brand-600);border-radius:20px;
  padding:56px 40px;color:#fff;
  box-shadow:var(--shadow-lg);
}
.final-cta h2{color:#fff;font-size:clamp(22px,2.4vw,30px)}
.final-cta p{margin-top:14px;font-size:16px;color:rgba(255,255,255,.86);max-width:600px;margin-left:auto;margin-right:auto}
.final-cta .cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-top:28px}
.final-cta .btn-link{color:#fff}
.final-cta .btn-link:hover{color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--ink-500);line-height:1.85;max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink-900);margin-bottom:16px;letter-spacing:.02em}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--ink-500)}
.footer-links a:hover{color:var(--brand-600)}
.subscribe-form{display:flex;gap:10px;margin-top:6px}
.subscribe-form input{
  flex:1;height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;
  font-size:14px;color:var(--ink-900);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.subscribe-form input::placeholder{color:#9AAABF}
.subscribe-form input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(20,102,214,.12)}
.form-note{font-size:13px;color:var(--ink-500);margin-top:10px}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-500);
}

/* ---------- 移动端粘性 CTA ---------- */
.sticky-cta{display:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .mega-panel{width:680px;grid-template-columns:1fr 1.2fr}
  .mega-card{display:none}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .hamburger{display:inline-flex;align-items:center;justify-content:center}
  .mega-wrap{display:none}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:76px 0 88px}
  .hero h1{max-width:100%}
  .ability-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:repeat(2,1fr);gap:28px}
  .timeline::before{display:none}
  .reward-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .container{padding:0 18px}
  .nav-inner{height:64px}
  .hero{min-height:auto}
  .hero-inner{padding:64px 0 72px}
  .hero-panel{padding:22px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:14px}
  .progress-board{grid-template-columns:1fr;gap:24px}
  .progress-percent{text-align:left}
  .progress-nodes{grid-template-columns:1fr 1fr}
  .news-list{padding:4px 16px}
  .news-thumb{width:84px;height:58px}
  .final-cta{padding:40px 22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:559px){
  body{font-size:15.5px}
  .section{padding:44px 0}
  .hero h1{font-size:26px;line-height:1.34}
  .hero-sub{font-size:15px}
  .btn{padding:12px 20px;font-size:14.5px}
  .hero-actions .btn{width:100%}
  .timeline{grid-template-columns:1fr;gap:24px}
  .reward-grid{
    display:flex;gap:14px;overflow-x:auto;padding-bottom:12px;
    scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
  }
  .reward-card{
    flex:0 0 78vw;scroll-snap-align:start;
    margin-right:-2px;
  }
  .reward-grid::after{content:"";flex:0 0 12px}
  .news-item-arrow{display:none}
  .footer-links{column-count:2;column-gap:16px}
  .sticky-cta{
    display:flex;align-items:center;justify-content:center;
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    height:64px;padding:0 16px calc(env(safe-area-inset-bottom,0px));
    background:#fff;box-shadow:0 -8px 24px -12px rgba(14,26,43,.35);
  }
  .sticky-cta .btn{width:100%}
  body{padding-bottom:64px}
}

/* roulang page: article */
:root{
  --brand-700:#0B4FB3;
  --brand-600:#1466D6;
  --brand-500:#3A86F0;
  --brand-100:#E4EFFF;
  --brand-50:#F2F7FF;
  --accent-600:#E8650A;
  --accent-500:#FF7A1A;
  --accent-100:#FFEEDF;
  --mint-500:#12BFA0;
  --ink-900:#0E1A2B;
  --ink-700:#33455C;
  --ink-500:#66788F;
  --line:#E2E9F2;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --ok:#12B47A;
  --warn:#E8A21A;
  --err:#E0554A;
  --shadow-sm:0 1px 2px rgba(14,26,43,.06);
  --shadow-md:0 8px 24px -8px rgba(14,26,43,.12);
  --shadow-lg:0 18px 40px -16px rgba(20,102,214,.28);
  --r-card:14px;
  --r-sm:10px;
  --r-img:12px;
  --w-container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;font-size:inherit;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--w-container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--r-sm);border:1px solid transparent;
  transition:background-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(0);background:var(--brand-700);}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:var(--shadow-sm);}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-accent:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700);transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);}
.text-link:hover{text-decoration:underline;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease-out,border-color .2s ease-out,background-color .2s ease-out;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-sm);}
.header-inner{display:flex;align-items:center;gap:24px;height:76px;transition:height .2s ease-out;}
.site-header.is-scrolled .header-inner{height:64px;}

.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;color:var(--ink-900);}
.brand:hover{color:var(--ink-900);}
.brand-mark{
  width:26px;height:26px;border-radius:8px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500) 55%,var(--mint-500));
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;left:6px;top:6px;width:14px;height:14px;
  border:2px solid rgba(255,255,255,.92);border-radius:50%;
  border-right-color:transparent;border-bottom-color:transparent;
  transform:rotate(45deg);
}
.brand-text{font-size:19px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}

.main-nav{display:flex;align-items:center;gap:4px;flex:1;min-width:0;}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;font-size:15px;font-weight:500;
  color:var(--ink-700);border-radius:8px;white-space:nowrap;transition:color .18s ease-out,background-color .18s ease-out;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-50);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;background:var(--brand-600);
}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex-shrink:0;}

.mega{position:relative;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;padding:9px 14px;font-size:14px;font-weight:600;
  color:var(--brand-700);background:var(--brand-50);border:1px solid var(--brand-100);border-radius:999px;
  transition:background-color .18s ease-out,border-color .18s ease-out;
}
.mega-trigger:hover{background:var(--brand-100);border-color:var(--brand-500);}
.mega-trigger svg{transition:transform .18s ease-out;}
.mega-trigger[aria-expanded="true"] svg{transform:rotate(180deg);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:800px;max-width:calc(100vw - 48px);
  background:#fff;border-radius:var(--r-card);box-shadow:var(--shadow-lg);border:1px solid var(--line);
  display:grid;grid-template-columns:1.05fr 1.05fr .95fr;gap:22px;padding:22px 24px;
  opacity:0;visibility:hidden;transform:translateY(-4px);
  transition:opacity .16s ease-out,transform .16s ease-out,visibility .16s ease-out;
}
.mega-panel::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--brand-600);border-radius:var(--r-card) var(--r-card) 0 0;}
.mega:hover .mega-panel,.mega:focus-within .mega-panel,.mega.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-col-title{font-size:13px;font-weight:700;color:var(--ink-500);letter-spacing:.06em;margin-bottom:12px;}
.mega-list li+li{margin-top:2px;}
.mega-list a{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:8px;font-size:14px;font-weight:500;color:var(--ink-700);}
.mega-list a:hover{background:var(--brand-50);color:var(--brand-700);}
.mega-list .dot{width:6px;height:6px;border-radius:50%;background:var(--brand-500);flex-shrink:0;}
.mega-list .idx{width:20px;font-size:12px;font-weight:700;color:var(--brand-500);font-variant-numeric:tabular-nums;}
.mega-news li+li{margin-top:6px;}
.mega-news a{display:block;padding:9px 10px;border-radius:8px;border:1px solid transparent;}
.mega-news a:hover{background:var(--brand-50);border-color:var(--brand-100);}
.mega-news-title{display:block;font-size:14px;font-weight:600;color:var(--ink-900);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.mega-news-time{display:block;font-size:12px;color:var(--ink-500);margin-top:2px;}
.mega-card{
  display:flex;flex-direction:column;gap:8px;height:100%;padding:18px;border-radius:var(--r-card);
  background:var(--brand-50);border:1px solid var(--brand-100);transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.mega-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);color:inherit;}
.mega-card-label{font-size:12px;font-weight:700;color:var(--accent-600);letter-spacing:.05em;}
.mega-card strong{font-size:16px;color:var(--ink-900);line-height:1.5;}
.mega-card-link{font-size:13px;font-weight:600;color:var(--brand-600);margin-top:auto;}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .2s ease-out,opacity .2s ease-out;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(14,26,43,.45);z-index:98;opacity:0;transition:opacity .2s ease-out;}
.drawer-mask.is-show{opacity:1;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:88vw;max-width:360px;background:#fff;z-index:99;
  padding:20px 20px 28px;overflow-y:auto;transform:translateX(102%);transition:transform .24s ease-out;
  box-shadow:-12px 0 40px -20px rgba(14,26,43,.4);
}
.mobile-drawer.is-show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);font-size:20px;line-height:1;color:var(--ink-700);}
.drawer-close:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-nav{display:flex;flex-direction:column;padding:14px 0;border-bottom:1px solid var(--line);}
.drawer-link{padding:11px 12px;border-radius:10px;font-size:15px;font-weight:500;color:var(--ink-700);}
.drawer-link:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-link.is-active{background:var(--brand-50);color:var(--brand-600);font-weight:600;}
.drawer-group{padding:16px 0;border-bottom:1px solid var(--line);}
.drawer-group h4{font-size:13px;color:var(--ink-500);letter-spacing:.06em;margin-bottom:10px;}
.drawer-group a{display:block;padding:9px 12px;border-radius:10px;font-size:14px;color:var(--ink-700);}
.drawer-group a:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-cta{margin-top:18px;}

/* ---------- 文章页头部 ---------- */
.page-banner{
  position:relative;color:#fff;overflow:hidden;
  background-image:linear-gradient(105deg,rgba(11,79,179,.92) 0%,rgba(11,79,179,.78) 42%,rgba(14,26,43,.55) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.page-banner::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,191,160,.34),rgba(18,191,160,0) 66%);
}
.page-banner .container{position:relative;z-index:2;padding-top:34px;padding-bottom:44px;}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(255,255,255,.74);margin-bottom:18px;}
.breadcrumb a{color:rgba(255,255,255,.86);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb .sep{opacity:.6;}
.breadcrumb .current{color:#fff;font-weight:500;max-width:420px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.page-banner h1{
  color:#fff;font-size:clamp(26px,3.6vw,40px);line-height:1.3;letter-spacing:-.02em;
  max-width:880px;margin-bottom:18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13.5px;color:rgba(255,255,255,.82);}
.meta-badge{
  display:inline-flex;align-items:center;padding:5px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.3);
}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-dot{width:5px;height:5px;border-radius:50%;background:var(--accent-500);}

/* ---------- 文章布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 320px;gap:48px;align-items:start;padding-top:52px;padding-bottom:24px;}
.article-main{min-width:0;}
.article-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);padding:34px 38px 38px;
}
.article-body{font-size:16px;line-height:1.85;color:var(--ink-700);max-width:760px;}
.article-body>*:first-child{margin-top:0;}
.article-body h2{
  position:relative;font-size:clamp(21px,2.4vw,26px);line-height:1.4;margin:38px 0 16px;padding-bottom:12px;
}
.article-body h2::after{content:"";position:absolute;left:0;bottom:0;width:20px;height:4px;border-radius:2px;background:var(--brand-600);}
.article-body h3{font-size:20px;font-weight:600;margin:28px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;}
.article-body p{margin:0 0 18px;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:0;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:9px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--brand-600);
}
.article-body ol{counter-reset:olc;}
.article-body ol li{position:relative;padding-left:28px;margin-bottom:9px;counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc);position:absolute;left:0;top:.28em;width:20px;height:20px;border-radius:50%;
  background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:700;line-height:20px;text-align:center;
}
.article-body blockquote{
  margin:0 0 20px;padding:16px 20px;background:var(--brand-50);border-left:4px solid var(--brand-600);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:20px 0 8px;background:var(--brand-50);}
.article-body figure{margin:20px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:8px;}
.article-body table{margin:20px 0;font-size:14.5px;border-radius:var(--r-sm);overflow:hidden;}
.article-body th{background:var(--brand-50);color:var(--ink-900);font-weight:600;text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:var(--bg);}
.article-body a{font-weight:500;border-bottom:1px solid rgba(20,102,214,.28);}
.article-body a:hover{border-bottom-color:var(--brand-600);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
.article-body .tip,.article-body .notice{
  margin:0 0 20px;padding:15px 18px 15px 46px;border-radius:var(--r-sm);font-size:15px;position:relative;
  background:var(--brand-50);color:var(--ink-700);
}
.article-body .notice{background:var(--accent-100);}
.article-body .tip::before,.article-body .notice::before{
  content:"";position:absolute;left:18px;top:21px;width:12px;height:12px;border-radius:50%;
  background:var(--brand-600);
}
.article-body .notice::before{background:var(--accent-500);}
.article-body .tip p:last-child,.article-body .notice p:last-child{margin-bottom:0;}

.empty-state{
  text-align:center;padding:56px 24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-sm);
}
.empty-icon{
  width:64px;height:64px;border-radius:50%;background:var(--brand-100);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;font-size:26px;font-weight:700;
}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--ink-500);font-size:15px;margin-bottom:22px;}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-sm);padding:20px 22px;}
.side-title{
  font-size:14px;font-weight:700;color:var(--ink-900);letter-spacing:.04em;margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand-600);}
.toc-list li+li{margin-top:4px;}
.toc-list a{
  display:block;padding:7px 10px 7px 12px;font-size:14px;color:var(--ink-700);border-left:2px solid transparent;
  border-radius:0 8px 8px 0;transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.toc-list a:hover{background:var(--brand-50);color:var(--brand-700);}
.toc-list a.is-current{color:var(--brand-700);font-weight:600;border-left-color:var(--brand-600);background:var(--brand-50);}
.side-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 12px;border-radius:var(--r-sm);
  font-size:14px;font-weight:500;color:var(--ink-700);border:1px solid var(--line);background:#fff;
  transition:background-color .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.side-link+.side-link{margin-top:8px;}
.side-link:hover{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700);transform:translateX(3px);}
.side-link span{color:var(--brand-500);font-weight:700;transition:transform .18s ease-out;}
.side-link:hover span{transform:translateX(3px);}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;padding:6px 12px;border-radius:999px;font-size:13px;
  background:var(--brand-100);color:var(--brand-700);transition:background-color .18s ease-out,color .18s ease-out;
}
.tag:hover{background:var(--brand-600);color:#fff;}
.tag-accent{background:var(--accent-100);color:var(--accent-600);}
.tag-accent:hover{background:var(--accent-500);color:#fff;}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0;}
.section-tight{padding:56px 0 72px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.6vw,28px);line-height:1.35;}
.section-head p{font-size:14px;color:var(--ink-500);margin:8px 0 0;}

/* ---------- 相关推荐 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand-100);color:inherit;}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-50);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .28s ease-out;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px 22px 22px;}
.card-body h3{font-size:16.5px;line-height:1.55;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-500);}

/* ---------- 上下篇 ---------- */
.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:36px;}
.pager-item{
  display:flex;flex-direction:column;gap:6px;padding:18px 20px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.pager-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--brand-100);color:inherit;}
.pager-label{font-size:12.5px;color:var(--ink-500);letter-spacing:.05em;}
.pager-item strong{font-size:16px;color:var(--ink-900);}
.pager-next{align-items:flex-end;text-align:right;}

/* ---------- 订阅条 ---------- */
.subscribe-strip{
  margin-top:36px;padding:26px 28px;border-radius:var(--r-card);background:var(--brand-50);
  border:1px solid var(--brand-100);display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;
}
.subscribe-strip h3{font-size:18px;margin-bottom:6px;}
.subscribe-strip p{font-size:14px;color:var(--ink-500);margin:0;}
.subscribe-form{display:flex;gap:10px;align-items:center;}
.subscribe-form input{
  height:44px;min-width:230px;padding:0 14px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:#fff;color:var(--ink-900);transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.subscribe-form input::placeholder{color:var(--ink-500);}
.subscribe-form input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(20,102,214,.12);}

/* ---------- 问答 ---------- */
.faq-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-sm);overflow:hidden;}
.faq-item+.faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink-900);
  transition:background-color .18s ease-out;
}
.faq-q:hover{background:var(--brand-50);}
.faq-sign{
  position:relative;width:20px;height:20px;flex-shrink:0;transition:transform .22s ease-out;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-sign::before{width:13px;height:2px;}
.faq-sign::after{width:2px;height:13px;transition:opacity .22s ease-out;}
.faq-item.is-open .faq-sign{transform:rotate(180deg);}
.faq-item.is-open .faq-sign::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease-out;}
.faq-a-inner{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--ink-700);max-width:820px;}

/* ---------- 结尾 CTA ---------- */
.cta-card{
  max-width:880px;margin:0 auto;text-align:center;padding:48px 40px;border-radius:20px;
  background:linear-gradient(115deg,var(--brand-700),var(--brand-600) 58%,var(--brand-500));
  box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
}
.cta-card::after{
  content:"";position:absolute;right:-70px;bottom:-70px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,26,.32),rgba(255,122,26,0) 70%);
}
.cta-card h2{color:#fff;font-size:clamp(22px,2.8vw,30px);margin-bottom:12px;position:relative;z-index:2;}
.cta-card p{color:rgba(255,255,255,.86);font-size:15px;max-width:560px;margin:0 auto 26px;position:relative;z-index:2;}
.cta-actions{display:flex;justify-content:center;align-items:center;gap:16px;flex-wrap:wrap;position:relative;z-index:2;}
.cta-card .btn-ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;}
.cta-card .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:56px 0 24px;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px;}
.footer-brand p{font-size:14px;color:var(--ink-500);margin:14px 0 0;max-width:340px;line-height:1.8;}
.footer-col h4{font-size:15px;margin-bottom:16px;}
.footer-links li+li{margin-top:10px;}
.footer-links a{font-size:14px;color:var(--ink-700);}
.footer-links a:hover{color:var(--brand-600);}
.subscribe-form .btn{padding:0 20px;height:44px;}
.form-note{font-size:13px;color:var(--ink-500);margin:12px 0 0;line-height:1.7;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-500);
}

/* ---------- 响应式 ---------- */
@media (min-width:1024px) and (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:32px;}
  .mega-panel{width:720px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .header-cta{display:none;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px;padding-top:36px;}
  .article-side{position:static;order:2;}
  .article-panel{padding:26px 22px 30px;}
  .article-side .toc-card{display:none;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .section{padding:56px 0;}
  .subscribe-strip{grid-template-columns:1fr;}
  .subscribe-form input{min-width:0;flex:1;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .header-inner{height:64px;gap:12px;}
  .page-banner .container{padding-top:24px;padding-bottom:34px;}
  .breadcrumb .current{max-width:200px;}
  .article-body{font-size:15.5px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .pager{grid-template-columns:minmax(0,1fr);}
  .pager-next{align-items:flex-start;text-align:left;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:559px){
  .section{padding:40px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .article-panel{padding:22px 16px 26px;}
  .subscribe-form{flex-direction:column;align-items:stretch;}
  .subscribe-form .btn{width:100%;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a-inner{padding:0 18px 18px;}
  .cta-card{padding:34px 22px;}
}

/* roulang page: category1 */
:root{
  --brand-700:#0B4FB3;
  --brand-600:#1466D6;
  --brand-500:#3A86F0;
  --brand-100:#E4EFFF;
  --brand-50:#F2F7FF;
  --accent-600:#E8650A;
  --accent-500:#FF7A1A;
  --accent-100:#FFEEDF;
  --mint-500:#12BFA0;
  --ink-900:#0E1A2B;
  --ink-700:#33455C;
  --ink-500:#66788F;
  --line:#E2E9F2;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --success:#12B47A;
  --warning:#E8A21A;
  --error:#E0554A;
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"DIN Alternate",Barlow,ui-monospace,SFMono-Regular,Menlo,monospace;
  --radius-card:14px;
  --radius-sm:10px;
  --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(14,26,43,.06);
  --shadow-md:0 8px 24px -8px rgba(14,26,43,.12);
  --shadow-lg:0 18px 40px -16px rgba(20,102,214,.28);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out,opacity .18s ease-out;}
a:hover{color:var(--brand-700);}
button,input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-100);color:var(--brand-700);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease-out,border-color .2s ease-out;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-sm);}
.header-inner{
  display:flex;align-items:center;gap:20px;
  height:76px;
  transition:height .2s ease-out;
}
.site-header.is-scrolled .header-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  position:relative;width:26px;height:26px;border-radius:9px;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500));
  box-shadow:0 6px 14px -6px rgba(20,102,214,.7);
}
.brand-mark::after{
  content:"";position:absolute;left:7px;top:7px;width:12px;height:12px;
  background:#fff;border-radius:3px;transform:rotate(45deg);
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1;min-width:0;}
.nav-link{
  position:relative;
  padding:8px 12px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:500;color:var(--ink-700);white-space:nowrap;
  transition:color .18s ease-out,background-color .18s ease-out;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-50);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--brand-600);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}

/* mega */
.mega-wrap{position:relative;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;color:var(--ink-700);font-size:14px;font-weight:500;cursor:pointer;
  transition:border-color .18s ease-out,color .18s ease-out,background-color .18s ease-out;
}
.mega-trigger:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-50);}
.mega-trigger i{font-size:11px;transition:transform .18s ease-out;}
.mega-wrap.is-open .mega-trigger{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-50);}
.mega-wrap.is-open .mega-trigger i{transform:rotate(180deg);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);
  width:800px;max-width:calc(100vw - 48px);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-img);
  box-shadow:var(--shadow-lg);
  padding:24px;
  opacity:0;visibility:hidden;transform:translateY(4px);
  transition:opacity .16s ease-out,transform .16s ease-out,visibility .16s;
  border-top:2px solid var(--brand-600);
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel,
.mega-wrap.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-grid{display:grid;grid-template-columns:1.1fr 1.2fr 1fr;gap:24px;}
.mega-col h4{font-size:14px;color:var(--ink-900);margin-bottom:12px;letter-spacing:.02em;}
.mega-list li+li{margin-top:8px;}
.mega-list a{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-700);}
.mega-list a:hover{color:var(--brand-600);}
.dot{width:6px;height:6px;border-radius:50%;background:var(--brand-500);flex-shrink:0;}
.mega-feed li{display:flex;gap:10px;font-size:14px;color:var(--ink-700);}
.mega-feed li+li{margin-top:10px;}
.mega-feed .t{font-family:var(--font-num);color:var(--brand-600);font-weight:600;flex-shrink:0;}
.mega-feed span.txt{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.mega-card{
  background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--radius-img);
  padding:18px;
}
.mega-card h5{margin:0 0 6px;font-size:15px;color:var(--ink-900);}
.mega-card p{font-size:13px;color:var(--ink-500);line-height:1.7;margin-bottom:12px;}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn:active{transform:translateY(0) scale(.99);}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 8px 18px -10px rgba(20,102,214,.8);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 8px 18px -10px rgba(255,122,26,.85);}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-2px);}
.btn-text{background:none;border:none;color:var(--brand-600);padding:6px 2px;cursor:pointer;font-weight:600;font-size:15px;}
.btn-text:hover{text-decoration:underline;color:var(--brand-700);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;color:var(--ink-900);
}
.nav-toggle:hover{border-color:var(--brand-500);color:var(--brand-600);}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,26,43,.45);opacity:0;visibility:hidden;
  transition:opacity .2s ease-out,visibility .2s;z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:88vw;max-width:360px;background:#fff;z-index:100;
  transform:translateX(102%);transition:transform .24s ease-out;
  padding:22px 20px 40px;overflow-y:auto;box-shadow:-16px 0 40px -20px rgba(14,26,43,.4);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{width:38px;height:38px;border-radius:var(--radius-sm);border:1px solid var(--line);background:#fff;cursor:pointer;}
.drawer-close:hover{border-color:var(--brand-500);color:var(--brand-600);}
.drawer-group{padding-top:18px;margin-top:18px;border-top:1px solid var(--line);}
.drawer-group:first-of-type{padding-top:0;margin-top:0;border-top:none;}
.drawer-group h4{font-size:14px;color:var(--ink-500);margin-bottom:10px;}
.drawer-link{display:block;padding:11px 12px;border-radius:var(--radius-sm);font-size:15px;color:var(--ink-700);}
.drawer-link:hover{background:var(--brand-50);color:var(--brand-600);}
.drawer-link.is-active{background:var(--brand-50);color:var(--brand-600);font-weight:600;}

/* ---------- page banner ---------- */
.page-banner{
  position:relative;
  min-height:340px;
  display:flex;align-items:center;
  background-image:linear-gradient(90deg,rgba(11,79,179,.9),rgba(14,26,43,.55)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.page-banner .container{position:relative;z-index:2;padding-top:64px;padding-bottom:64px;}
.banner-inner{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;}
.banner-copy{max-width:720px;}
.crumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:14px;flex-wrap:wrap;
}
.crumb a{color:rgba(255,255,255,.85);}
.crumb a:hover{color:#fff;}
.crumb .sep{opacity:.6;}
.crumb .current{color:#fff;}
.page-banner h1{
  font-size:clamp(28px,4vw,44px);line-height:1.28;letter-spacing:-.02em;color:#fff;
  max-width:86%;
}
.banner-sub{margin-top:14px;font-size:16px;color:rgba(255,255,255,.88);max-width:640px;}
.banner-badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px;}
.banner-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.28);
}
.banner-badge i{font-size:12px;color:var(--accent-500);}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.sec-title{font-size:clamp(24px,2.6vw,32px);line-height:1.35;letter-spacing:-.015em;}
.sec-title::before{
  content:"";display:block;width:20px;height:4px;border-radius:2px;background:var(--brand-600);margin-bottom:12px;
}
.sec-desc{margin-top:12px;font-size:15px;color:var(--ink-500);max-width:700px;}
.sec-link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.sec-link i{font-size:12px;transition:transform .18s ease-out;}
.sec-link:hover i{transform:translateX(4px);}

/* filter tabs */
.filter-bar{
  display:flex;gap:10px;flex-wrap:nowrap;overflow-x:auto;
  padding:8px;background:#fff;border:1px solid var(--line);border-radius:999px;
  box-shadow:var(--shadow-sm);margin-bottom:36px;
  scrollbar-width:none;
}
.filter-bar::-webkit-scrollbar{display:none;}
.filter-tab{
  flex-shrink:0;
  padding:9px 20px;border-radius:999px;border:1px solid transparent;background:transparent;
  font-size:14px;font-weight:500;color:var(--ink-500);cursor:pointer;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.filter-tab:hover{background:var(--brand-50);color:var(--brand-600);}
.filter-tab.is-active{background:var(--brand-600);color:#fff;border-color:var(--brand-600);box-shadow:0 8px 16px -10px rgba(20,102,214,.9);}

/* card wall */
.wall{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:stretch;}
.wall-side{display:grid;gap:24px;}
.wall-low{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand-100);}
.card-media{position:relative;overflow:hidden;background:var(--brand-50);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.card:hover .card-media img{transform:scale(1.03);}
.card-feature{display:flex;flex-direction:column;}
.card-feature .card-media{aspect-ratio:16/10;}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:20px;line-height:1.45;}
.card-body p{font-size:15px;line-height:1.8;color:var(--ink-700);}
.card-text .card-body{padding:22px;}
.card-text .card-body h3{font-size:17px;line-height:1.5;}
.card-text .card-body p{font-size:14px;color:var(--ink-500);line-height:1.75;}
.card-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--ink-500);}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.card-foot .more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.card-foot .more i{font-size:12px;transition:transform .18s ease-out;}
.card:hover .card-foot .more i{transform:translateX(4px);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;font-weight:500;
  background:var(--brand-100);color:var(--brand-700);
}
.badge.accent{background:var(--accent-100);color:var(--accent-600);}
.badge.mint{background:rgba(18,191,160,.12);color:#0C8F78;}

/* steps timeline */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.steps::before{
  content:"";position:absolute;top:26px;left:6%;right:6%;height:1px;
  border-top:2px dashed var(--line);
}
.step{position:relative;padding-top:0;}
.step-no{
  width:52px;height:52px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-100);color:var(--brand-700);font-family:var(--font-num);font-size:17px;font-weight:700;
  margin-bottom:18px;position:relative;z-index:2;border:4px solid var(--bg);
}
.section.alt .step-no{border-color:#fff;}
.step h3{font-size:18px;line-height:1.5;margin-bottom:8px;}
.step p{font-size:14px;color:var(--ink-500);line-height:1.8;}

/* stat band */
.stat-band{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-md);
  display:grid;grid-template-columns:repeat(4,1fr);
  overflow:hidden;
}
.stat{padding:30px 26px;border-right:1px solid var(--line);}
.stat:last-child{border-right:none;}
.stat .num{font-size:30px;font-weight:700;color:var(--ink-900);line-height:1.2;display:block;}
.stat .num em{font-size:15px;font-style:normal;color:var(--ink-500);margin-left:4px;font-family:var(--font-sans);}
.stat .label{font-size:14px;color:var(--ink-500);margin-top:8px;}
.stat.is-key{background:var(--accent-100);}
.stat.is-key .num{color:var(--accent-600);}
.stat.is-key .label{color:#A84F09;}

/* split block */
.split{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start;}
.split-aside{position:sticky;top:104px;}
.split-aside .lead{font-size:15px;color:var(--ink-500);line-height:1.85;margin-top:14px;}
.point-list{display:grid;gap:20px;}
.point{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.point:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.point h3{font-size:17px;margin-bottom:8px;display:flex;align-items:center;gap:10px;}
.point h3 i{color:var(--brand-600);font-size:15px;}
.point p{font-size:15px;color:var(--ink-700);line-height:1.8;}

/* faq */
.faq{max-width:900px;margin:0 auto;display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item.is-open{border-color:var(--brand-100);box-shadow:var(--shadow-md);}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;
}
.faq-q:hover{color:var(--brand-600);}
.faq-icon{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;background:var(--brand-50);
  color:var(--brand-600);display:flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform .2s ease-out,background-color .2s ease-out,color .2s ease-out;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand-600);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease-out;}
.faq-a .inner{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--ink-700);}

/* cta band */
.cta-band{
  background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--radius-card);
  padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:clamp(22px,2.2vw,28px);line-height:1.4;}
.cta-band p{font-size:15px;color:var(--ink-500);margin-top:10px;max-width:560px;}
.cta-actions{display:flex;align-items:center;gap:16px;flex-shrink:0;}

/* ---------- footer ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--ink-500);line-height:1.8;max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:14px;color:var(--ink-900);}
.footer-links li+li{margin-top:9px;}
.footer-links a{font-size:14px;color:var(--ink-500);}
.footer-links a:hover{color:var(--brand-600);}
.subscribe-form{display:flex;gap:10px;}
.subscribe-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;font-size:14px;color:var(--ink-900);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.subscribe-form input::placeholder{color:#9AA9BC;}
.subscribe-form input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(20,102,214,.12);}
.subscribe-form input:invalid:not(:placeholder-shown){border-color:var(--error);}
.subscribe-form .btn{height:44px;padding:0 20px;}
.form-note{font-size:13px;color:var(--ink-500);margin-top:10px;line-height:1.7;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-500);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .main-nav{gap:0;}
  .nav-link{padding:8px 9px;font-size:14px;}
  .mega-panel{width:720px;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:68px;gap:12px;}
  .banner-inner{flex-direction:column;align-items:flex-start;gap:20px;}
  .page-banner h1{max-width:100%;}
  .wall{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .steps::before{display:none;}
  .stat-band{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:none;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line);}
  .split{grid-template-columns:1fr;gap:28px;}
  .split-aside{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section.tight{padding:40px 0;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px;}
  .page-banner .container{padding-top:44px;padding-bottom:44px;}
  .page-banner h1{font-size:clamp(24px,7vw,30px);max-width:100%;}
  .banner-sub{font-size:15px;}
  .wall-low{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;gap:26px;}
  .stat-band{grid-template-columns:1fr;}
  .stat{border-right:none;border-bottom:1px solid var(--line);padding:24px 20px;}
  .stat:last-child{border-bottom:none;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px;}
  .cta-actions{width:100%;flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-brand p{max-width:100%;}
  .filter-bar{border-radius:var(--radius-card);}
  .card-body{padding:20px;}
}
@media (max-width:519px){
  .brand-text{font-size:16px;}
  .header-actions .btn-primary{display:none;}
  .stat .num{font-size:26px;}
  .faq-q{padding:17px 18px;font-size:15px;}
  .faq-a .inner{padding:0 18px 18px;}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --brand-700:#0B4FB3;
  --brand-600:#1466D6;
  --brand-500:#3A86F0;
  --brand-100:#E4EFFF;
  --brand-50:#F2F7FF;
  --accent-600:#E8650A;
  --accent-500:#FF7A1A;
  --accent-100:#FFEEDF;
  --mint-500:#12BFA0;
  --ink-900:#0E1A2B;
  --ink-700:#33455C;
  --ink-500:#66788F;
  --line:#E2E9F2;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --success:#12B47A;
  --warning:#E8A21A;
  --error:#E0554A;
  --radius-card:14px;
  --radius-sm:10px;
  --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(14,26,43,.06);
  --shadow-md:0 8px 24px -8px rgba(14,26,43,.12);
  --shadow-lg:0 18px 40px -16px rgba(20,102,214,.28);
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"DIN Alternate",Barlow,ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--brand-700)}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.34}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-accent{background:var(--accent-500);color:#fff}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px -14px rgba(232,101,10,.5)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-700)}
.btn-ghost-light{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost-light:hover{background:#fff;color:var(--brand-700)}
.btn:active{transform:translateY(0) scale(.99)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid transparent;
  backdrop-filter:saturate(160%) blur(8px);
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-stuck{background:#fff;border-bottom-color:var(--line);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;gap:18px;height:76px;transition:height .2s ease}
.site-header.is-stuck .header-inner{height:64px}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink-900);font-weight:700;font-size:18px;letter-spacing:-.01em}
.brand:hover{color:var(--ink-900)}
.brand-mark{position:relative;width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--brand-600),var(--mint-500));flex:0 0 auto}
.brand-mark::after{content:"";position:absolute;inset:7px;border:2px solid #fff;border-radius:50%}
.brand-text{white-space:nowrap}

.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{position:relative;padding:10px 11px;border-radius:10px;font-size:15px;font-weight:500;color:var(--ink-700);white-space:nowrap}
.nav-link:hover{color:var(--brand-600);background:var(--brand-50)}
.nav-link.is-active{color:var(--brand-600);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:11px;right:11px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-600)}

.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}

.mega-wrap{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:7px;padding:10px 16px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink-700);
  font-size:14px;font-weight:600;cursor:pointer;transition:.18s ease-out;
}
.mega-trigger i{color:var(--accent-500);font-size:12px}
.mega-trigger:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-50)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:780px;
  display:grid;grid-template-columns:1fr 1.15fr 1fr;gap:22px;
  padding:22px;background:#fff;border:1px solid var(--line);border-top:2px solid var(--brand-600);
  border-radius:12px;box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translateY(4px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel,
.mega-wrap.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{margin-bottom:12px;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--ink-500)}
.mega-list li + li{margin-top:4px}
.mega-list a,.mega-news a{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:9px;font-size:14px;color:var(--ink-700);transition:.16s ease-out}
.mega-list a:hover,.mega-news a:hover{background:var(--brand-50);color:var(--brand-700)}
.mega-num{font-family:var(--font-num);font-size:12px;font-weight:700;color:var(--brand-600)}
.mega-news li + li{margin-top:2px}
.mega-news a{align-items:flex-start;flex-direction:column;gap:2px}
.mega-news-t{display:block;width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:500;color:var(--ink-900)}
.mega-news-d{font-size:12px;color:var(--ink-500)}
.mega-cta{padding:18px;border-radius:12px;background:var(--brand-50);border:1px solid var(--brand-100)}
.mega-cta-t{font-size:15px;font-weight:700;color:var(--ink-900)}
.mega-cta-d{margin:6px 0 14px;font-size:13px;line-height:1.7;color:var(--ink-500)}

.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;transition:.18s ease-out}
.nav-toggle span{width:18px;height:2px;border-radius:2px;background:var(--ink-700);transition:.2s ease}
.nav-toggle:hover{border-color:var(--brand-500);background:var(--brand-50)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;z-index:80;background:rgba(14,26,43,.45);opacity:0;visibility:hidden;transition:.24s ease}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;z-index:90;height:100%;width:88vw;max-width:360px;
  padding:20px 20px 40px;background:#fff;box-shadow:var(--shadow-lg);
  transform:translateX(102%);transition:transform .24s ease;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--ink-700);transition:.18s ease-out}
.drawer-close:hover{background:var(--brand-50);color:var(--brand-600)}
.drawer-nav{margin-top:14px;display:flex;flex-direction:column;gap:2px}
.drawer-link{padding:12px 12px;border-radius:10px;font-size:15px;font-weight:500;color:var(--ink-700)}
.drawer-link:hover{background:var(--brand-50);color:var(--brand-600)}
.drawer-link.is-active{background:var(--brand-50);color:var(--brand-600);font-weight:600}
.drawer-title{margin:22px 0 10px;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--ink-500)}
.drawer-list li + li{margin-top:2px}
.drawer-list a{display:block;padding:10px 12px;border-radius:10px;font-size:14px;color:var(--ink-700)}
.drawer-list a:hover{background:var(--brand-50);color:var(--brand-600)}
.drawer-list small{display:block;font-size:12px;color:var(--ink-500)}
body.no-scroll{overflow:hidden}

/* ---------- 内页首屏 ---------- */
.page-hero{
  position:relative;color:#fff;
  background-image:linear-gradient(100deg,rgba(11,79,179,.86),rgba(14,26,43,.44)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:70px 0 74px;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.72fr);gap:44px;align-items:center}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78)}
.breadcrumb a{color:rgba(255,255,255,.78)}
.breadcrumb a:hover{color:#fff}
.breadcrumb span[aria-current]{color:#fff;font-weight:600}
.hero-tag{display:inline-flex;align-items:center;gap:8px;margin-top:18px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.34);font-size:13px;font-weight:600}
.page-hero h1{margin-top:16px;font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1.28;letter-spacing:-.02em;color:#fff;max-width:80%}
.hero-sub{margin-top:16px;max-width:640px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.9)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);font-size:13px;color:#fff}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-side{padding:22px;border-radius:var(--radius-card);background:#fff;box-shadow:var(--shadow-md);color:var(--ink-700)}
.hero-side-title{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--ink-500)}
.hero-stat{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line)}
.hero-stat:last-child{border-bottom:0;padding-bottom:4px}
.hero-stat-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:30px;font-weight:700;color:var(--brand-700);line-height:1}
.hero-stat-label{font-size:13px;color:var(--ink-500)}

/* ---------- 区块通用 ---------- */
.section{padding:88px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand-600)}
.eyebrow::before{content:"";width:20px;height:4px;border-radius:2px;background:var(--brand-600)}
.section-head h2{margin-top:12px;font-size:clamp(24px,3vw,30px);line-height:1.35}
.section-sub{margin-top:14px;font-size:15px;line-height:1.85;color:var(--ink-500);max-width:720px}

/* ---------- 流程区 ---------- */
.flow-grid{display:grid;grid-template-columns:38% minmax(0,1fr);gap:40px;align-items:start}
.rail{position:sticky;top:96px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm)}
.rail-figure{margin:0 0 18px;border-radius:var(--radius-img);overflow:hidden;background:var(--brand-50)}
.rail-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.rail-list li + li{margin-top:4px}
.rail-link{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:10px;font-size:14px;font-weight:500;color:var(--ink-700);transition:.18s ease-out}
.rail-link:hover{background:var(--brand-50);color:var(--brand-700);transform:translateX(3px)}
.rail-num{display:inline-grid;place-items:center;width:30px;height:30px;flex:0 0 auto;border-radius:9px;background:var(--brand-100);color:var(--brand-700);font-family:var(--font-num);font-size:13px;font-weight:700}
.rail-note{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;line-height:1.75;color:var(--ink-500)}

.flow-steps{display:flex;flex-direction:column;gap:20px}
.flow-step{position:relative;padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);transition:transform .18s ease-out,box-shadow .18s ease-out}
.flow-step:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.step-head{display:flex;align-items:center;gap:12px}
.step-num{display:inline-grid;place-items:center;width:40px;height:40px;flex:0 0 auto;border-radius:12px;background:var(--brand-100);color:var(--brand-700);font-family:var(--font-num);font-size:15px;font-weight:700}
.step-head h3{font-size:20px;font-weight:600}
.flow-step p{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--ink-700);max-width:720px}
.check-list{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.check-list li{position:relative;padding-left:20px;font-size:14px;line-height:1.75;color:var(--ink-500)}
.check-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--brand-600)}

/* ---------- 参数对照 ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.compare-card{padding:26px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);transition:transform .18s ease-out,box-shadow .18s ease-out}
.compare-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.compare-card.is-highlight{border:2px solid var(--accent-500);position:relative}
.compare-card.is-highlight::after{content:"组合场景";position:absolute;top:-12px;right:20px;padding:4px 12px;border-radius:999px;background:var(--accent-100);color:var(--accent-600);font-size:12px;font-weight:700}
.compare-head{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.compare-icon{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--brand-100);color:var(--brand-700);font-size:16px}
.compare-card.is-highlight .compare-icon{background:var(--accent-100);color:var(--accent-600)}
.compare-head h3{font-size:20px;font-weight:700}
.compare-desc{font-size:14px;line-height:1.8;color:var(--ink-500);margin-bottom:18px}
.param-row{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:13px 14px;border-radius:10px}
.param-row:nth-child(odd){background:var(--brand-50)}
.param-label{flex:0 0 88px;font-size:13.5px;color:var(--ink-500)}
.param-value{flex:1;text-align:right;font-size:14.5px;font-weight:600;color:var(--ink-900);line-height:1.7}

/* ---------- 时间节奏 ---------- */
.timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.timeline-item{position:relative;padding:24px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);transition:transform .18s ease-out,box-shadow .18s ease-out}
.timeline-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.timeline-item::before{content:"";position:absolute;top:0;left:22px;right:22px;height:3px;border-radius:0 0 3px 3px;background:var(--brand-100)}
.timeline-item:nth-child(3)::before{background:var(--accent-100)}
.tl-dot{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--brand-600);margin-bottom:12px}
.timeline-item:nth-child(3) .tl-dot{background:var(--accent-500)}
.tl-time{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;font-weight:700;color:var(--brand-600);letter-spacing:.02em}
.timeline-item:nth-child(3) .tl-time{color:var(--accent-600)}
.tl-title{margin-top:8px;font-size:18px;font-weight:600}
.tl-desc{margin-top:10px;font-size:14px;line-height:1.8;color:var(--ink-500)}

/* ---------- 折叠面板 ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease}
.faq-item.is-open{border-color:var(--brand-500);box-shadow:var(--shadow-md)}
.faq-btn{display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);transition:.18s ease-out}
.faq-btn:hover{color:var(--brand-600)}
.faq-icon{position:relative;width:26px;height:26px;flex:0 0 auto;border-radius:50%;background:var(--brand-50);color:var(--brand-600);transition:transform .25s ease,background .2s ease,color .2s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;top:50%;left:50%;background:currentColor;border-radius:2px;transform:translate(-50%,-50%)}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px;transition:transform .25s ease}
.faq-item.is-open .faq-icon{background:var(--brand-600);color:#fff;transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-body{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-body-inner{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--ink-700);max-width:760px}

/* ---------- 收尾 CTA ---------- */
.cta-band{background:var(--brand-50);border-top:1px solid var(--brand-100)}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:52px 0}
.cta-inner h2{font-size:clamp(22px,2.6vw,28px)}
.cta-inner p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--ink-500);max-width:640px}
.cta-actions{display:flex;align-items:center;gap:18px;flex:0 0 auto}
.cta-link{font-size:15px;font-weight:600;color:var(--brand-600);text-decoration:underline;text-underline-offset:4px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.85;color:var(--ink-500);max-width:320px}
.footer-col h4{margin-bottom:14px;font-size:15px;font-weight:700;color:var(--ink-900)}
.footer-links li + li{margin-top:8px}
.footer-links a{font-size:14px;color:var(--ink-700)}
.footer-links a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:4px}
.subscribe-form{display:flex;gap:10px}
.subscribe-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;color:var(--ink-900);font-size:14px;transition:border-color .18s ease,box-shadow .18s ease;
}
.subscribe-form input::placeholder{color:var(--ink-500)}
.subscribe-form input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(20,102,214,.12)}
.subscribe-form input:user-invalid{border-color:var(--error)}
.subscribe-form .btn{height:44px;padding:0 18px}
.form-note{margin-top:10px;font-size:13px;line-height:1.7;color:var(--ink-500)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:44px;padding:18px 0;border-top:1px solid var(--line);font-size:13px;color:var(--ink-500)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .main-nav{gap:0}
  .nav-link{padding:10px 9px;font-size:14px}
  .mega-panel{width:700px}
}
@media (max-width:1119px){
  .header-cta{display:none}
  .mega-panel{width:640px;grid-template-columns:1fr 1fr}
  .mega-cta-col{display:none}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .mega-wrap{display:none}
  .nav-toggle{display:flex}
  .section{padding:60px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero h1{max-width:100%}
  .flow-grid{grid-template-columns:1fr;gap:28px}
  .rail{position:static}
  .compare-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:44px 0}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:48px 0}
  .page-hero{padding:48px 0 52px}
  .hero-sub{font-size:15px}
  .timeline{grid-template-columns:1fr}
  .flow-step{padding:20px}
  .step-head h3{font-size:18px}
  .param-row{flex-direction:column;gap:6px}
  .param-value{text-align:left}
  .cta-actions{width:100%;flex-wrap:wrap}
  .cta-actions .btn{width:100%}
  .faq-btn{font-size:15px;padding:18px}
  .subscribe-form{flex-direction:column}
  .subscribe-form .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
}
@media (max-width:559px){
  .brand{font-size:16px}
  .brand-mark{width:22px;height:22px}
  .hero-stat-num{font-size:26px}
  .footer-grid{grid-template-columns:1fr}
  .section-head{margin-bottom:28px}
}

/* roulang page: category3 */
:root{
  --brand-700:#0B4FB3;
  --brand-600:#1466D6;
  --brand-500:#3A86F0;
  --brand-100:#E4EFFF;
  --brand-50:#F2F7FF;
  --accent-600:#E8650A;
  --accent-500:#FF7A1A;
  --accent-100:#FFEEDF;
  --mint-500:#12BFA0;
  --ink-900:#0E1A2B;
  --ink-700:#33455C;
  --ink-500:#66788F;
  --line:#E2E9F2;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --success:#12B47A;
  --warning:#E8A21A;
  --error:#E0554A;
  --radius-sm:10px;
  --radius:14px;
  --radius-lg:20px;
  --shadow-sm:0 1px 2px rgba(14,26,43,.06);
  --shadow-md:0 8px 24px -8px rgba(14,26,43,.12);
  --shadow-lg:0 18px 40px -16px rgba(20,102,214,.28);
  --container:1200px;
  --font-num:"DIN Alternate",Barlow,ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;background:var(--brand-50);}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.35;font-weight:700;}
h1{font-size:clamp(28px,4vw,44px);line-height:1.28;letter-spacing:-.02em;}
h2{font-size:clamp(24px,2.6vw,32px);}
h3{font-size:20px;font-weight:600;}
h4{font-size:16px;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-600);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;color:#fff;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.4;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--brand-600);color:#fff;}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(0);background:var(--brand-700);}
.btn-accent{background:var(--accent-500);color:#fff;}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px -14px rgba(232,101,10,.55);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-700);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1.6;
  background:var(--brand-100);color:var(--brand-700);
}
.badge-accent{background:var(--accent-100);color:var(--accent-600);}
.badge-mint{background:rgba(18,191,160,.12);color:#0E9C83;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm);}
.header-inner{display:flex;align-items:center;gap:20px;height:76px;transition:height .2s ease-out;}
.site-header.is-scrolled .header-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:26px;height:26px;border-radius:8px;background:var(--brand-600);
  position:relative;flex:none;box-shadow:0 6px 14px -8px rgba(20,102,214,.9);
}
.brand-mark::after{
  content:"";position:absolute;right:5px;top:5px;width:8px;height:8px;
  border-radius:3px;background:var(--accent-500);
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;}
.main-nav{display:flex;align-items:center;gap:2px;flex:1;justify-content:center;}
.nav-link{
  position:relative;padding:8px 12px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--ink-700);white-space:nowrap;
  transition:color .18s ease-out,background .18s ease-out;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-50);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;
  border-radius:2px;background:var(--brand-600);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.mega-wrap{position:relative;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--ink-700);font-size:14px;font-weight:600;cursor:pointer;
  transition:.18s ease-out;
}
.mega-trigger:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-50);}
.mega-trigger .caret{
  width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;
  border-top:5px solid currentColor;transition:transform .18s ease-out;
}
.mega-trigger[aria-expanded="true"] .caret{transform:rotate(180deg);}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:820px;
  background:#fff;border:1px solid var(--line);border-top:2px solid var(--brand-600);
  border-radius:12px;box-shadow:var(--shadow-lg);padding:24px;
  display:grid;grid-template-columns:1fr 1.25fr 1fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(4px);pointer-events:none;
  transition:opacity .16s ease-out,transform .16s ease-out,visibility .16s;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel,
.mega-panel.is-open{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto;}
.mega-col h4{margin-bottom:12px;font-size:13px;color:var(--ink-500);letter-spacing:.04em;}
.mega-list li + li{margin-top:6px;}
.mega-list a{
  display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:8px;
  font-size:15px;color:var(--ink-700);
}
.mega-list a:hover{background:var(--brand-50);color:var(--brand-700);}
.mega-list .dot{width:6px;height:6px;border-radius:50%;background:var(--brand-500);flex:none;}
.mega-news li + li{margin-top:10px;}
.mega-news a{display:block;padding:8px 10px;border-radius:8px;}
.mega-news a:hover{background:var(--brand-50);}
.mega-news-title{
  display:block;font-size:14px;font-weight:500;color:var(--ink-900);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.mega-news-time{display:block;font-size:13px;color:var(--ink-500);}
.mega-cta{background:var(--brand-50);border:1px solid #D8E6FB;border-radius:12px;padding:18px;}
.mega-cta h4{margin-bottom:6px;color:var(--brand-700);font-size:15px;}
.mega-cta p{font-size:13px;color:var(--ink-500);margin-bottom:12px;line-height:1.7;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:88vw;max-width:360px;
  background:#fff;z-index:90;padding:22px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s ease-out;
  box-shadow:-20px 0 40px -24px rgba(14,26,43,.4);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;
  font-size:20px;line-height:1;color:var(--ink-700);cursor:pointer;
}
.drawer-close:hover{background:var(--brand-50);color:var(--brand-600);}
.drawer-nav{display:grid;gap:4px;border-bottom:1px solid var(--line);padding-bottom:18px;}
.drawer-link{padding:11px 12px;border-radius:10px;font-size:15px;color:var(--ink-700);font-weight:500;}
.drawer-link:hover{background:var(--brand-50);color:var(--brand-600);}
.drawer-link.is-active{background:var(--brand-50);color:var(--brand-600);font-weight:600;}
.drawer-group{padding:18px 0;}
.drawer-group h4{font-size:13px;color:var(--ink-500);margin-bottom:10px;letter-spacing:.04em;}
.drawer-group a{display:block;padding:9px 12px;border-radius:10px;font-size:14px;color:var(--ink-700);}
.drawer-group a:hover{background:var(--brand-50);color:var(--brand-600);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,26,43,.45);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .28s ease-out,visibility .28s;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
body.drawer-open{overflow:hidden;}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#fff;
  background-image:linear-gradient(115deg,rgba(11,79,179,.86),rgba(14,26,43,.55)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  padding:56px 0 72px;min-height:480px;display:flex;align-items:center;
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;width:100%;}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.78);margin-bottom:16px;display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.breadcrumb a{color:rgba(255,255,255,.9);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb .sep{opacity:.6;}
.hero-tag{
  display:inline-block;padding:5px 14px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);
  font-size:13px;font-weight:600;letter-spacing:.06em;margin-bottom:16px;
}
.hero h1{color:#fff;max-width:760px;margin-bottom:16px;}
.hero-sub{font-size:17px;line-height:1.85;color:rgba(255,255,255,.9);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 22px;}
.hero-actions .btn-ghost{background:rgba(255,255,255,.95);border-color:transparent;}
.hero-actions .btn-ghost:hover{background:#fff;border-color:transparent;}
.hero-meta{display:flex;flex-wrap:wrap;gap:20px;font-size:14px;color:rgba(255,255,255,.86);}
.hero-meta li{display:flex;align-items:center;gap:8px;}
.hero-meta li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500);flex:none;
}
.hero-card{
  background:#fff;color:var(--ink-700);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-lg);
}
.hero-card .badge{margin-bottom:14px;}
.hero-card-label{font-size:14px;color:var(--ink-500);margin-bottom:12px;}
.countdown{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px;}
.cd-cell{
  background:var(--brand-50);border:1px solid #D8E6FB;border-radius:var(--radius-sm);
  padding:12px 6px;text-align:center;
}
.cd-cell strong{
  display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:26px;font-weight:700;color:var(--brand-700);line-height:1.2;
}
.cd-cell span{font-size:12px;color:var(--ink-500);}
.hero-card-note{font-size:13px;line-height:1.75;color:var(--ink-500);margin-bottom:16px;}

/* ---------- 数据看板 ---------- */
.board{background:var(--ink-900);color:#fff;padding:58px 0;}
.board-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.board-head h2{color:#fff;position:relative;padding-left:16px;}
.board-head h2::before{
  content:"";position:absolute;left:0;top:.3em;width:4px;height:20px;border-radius:2px;background:var(--accent-500);
}
.board-head p{font-size:15px;color:rgba(255,255,255,.68);max-width:640px;}
.board-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.board-item{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);padding:22px;
}
.board-item.is-accent{background:rgba(255,122,26,.12);border-color:var(--accent-500);}
.board-num{
  display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:34px;font-weight:700;color:#fff;line-height:1.25;letter-spacing:-.01em;
}
.board-item.is-accent .board-num{color:var(--accent-500);}
.board-label{display:block;font-size:14px;color:rgba(255,255,255,.72);margin-top:6px;}

/* ---------- 通用板块 ---------- */
.section{padding:86px 0;}
.section-alt{background:#fff;}
.section-head{margin-bottom:36px;}
.section-head h2{position:relative;padding-left:16px;margin-bottom:12px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.3em;width:4px;height:20px;border-radius:2px;background:var(--brand-600);
}
.section-head p{font-size:16px;color:var(--ink-500);max-width:740px;}

/* ---------- 奖励阶梯 ---------- */
.tier-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start;}
.tier-track{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.tier-card{
  position:relative;display:flex;flex-direction:column;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.tier-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#CFE0FA;}
.tier-card.is-top{border:2px solid var(--accent-500);}
.tier-flag{
  position:absolute;top:-13px;right:18px;
  background:var(--accent-500);color:#fff;font-size:12px;font-weight:600;
  padding:4px 12px;border-radius:999px;box-shadow:0 8px 16px -10px rgba(232,101,10,.9);
}
.tier-head{display:flex;align-items:flex-start;gap:12px;}
.tier-step{
  width:38px;height:38px;flex:none;border-radius:12px;
  background:var(--brand-100);color:var(--brand-700);
  font-family:var(--font-num);font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;
}
.tier-head h3{margin-bottom:2px;}
.tier-req{font-size:14px;color:var(--ink-500);font-family:var(--font-num);font-variant-numeric:tabular-nums;}
.tier-list{display:grid;gap:10px;flex:1;}
.tier-list li{
  position:relative;padding-left:20px;font-size:15px;color:var(--ink-700);line-height:1.75;
}
.tier-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:3px;
  background:var(--brand-600);
}
.tier-card.is-top .tier-list li::before{background:var(--accent-500);}
.tier-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:6px;border-top:1px dashed var(--line);}
.tier-foot .tip{font-size:13px;color:var(--ink-500);}
.aside-card{
  position:sticky;top:96px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-md);
}
.aside-card h3{font-size:18px;margin-bottom:6px;}
.aside-card .aside-sub{font-size:13px;color:var(--ink-500);margin-bottom:16px;}
.aside-card .countdown{margin-bottom:16px;}
.aside-list{display:grid;gap:10px;margin:16px 0 18px;font-size:14px;color:var(--ink-700);}
.aside-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.aside-list strong{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--ink-900);}

/* ---------- 积分获取时间轴 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow-item{position:relative;padding-right:12px;}
.flow-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:var(--brand-100);color:var(--brand-700);
  font-family:var(--font-num);font-weight:700;font-size:15px;margin-bottom:14px;
}
.flow-item h3{margin-bottom:8px;}
.flow-item p{font-size:15px;color:var(--ink-700);}
.flow-item::after{
  content:"";position:absolute;top:22px;left:58px;right:-6px;
  border-top:2px dashed #CFE0FA;
}
.flow-item:last-child::after{display:none;}
.flow-note{
  margin-top:28px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  font-size:14px;color:var(--ink-500);
}
.flow-note .badge{font-weight:500;}

/* ---------- 对照卡 ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.compare-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-sm);
}
.compare-card.is-alt{background:var(--brand-50);border-color:#D8E6FB;}
.compare-card h3{margin-bottom:4px;}
.compare-card .card-sub{font-size:14px;color:var(--ink-500);margin-bottom:16px;}
.compare-list li{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px 14px;border-radius:var(--radius-sm);font-size:15px;
}
.compare-list li:nth-child(odd){background:var(--bg);}
.compare-card.is-alt .compare-list li:nth-child(odd){background:rgba(255,255,255,.75);}
.compare-list strong{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--brand-700);font-weight:700;}
.compare-card.is-alt .compare-list strong{color:var(--accent-600);}

/* ---------- 兑换流程 ---------- */
.exchange-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.exchange-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);}
.exchange-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;}
.exchange-body h2{position:relative;padding-left:16px;margin-bottom:12px;}
.exchange-body h2::before{
  content:"";position:absolute;left:0;top:.3em;width:4px;height:20px;border-radius:2px;background:var(--brand-600);
}
.exchange-lead{font-size:16px;color:var(--ink-500);margin-bottom:24px;}
.steps{display:grid;gap:18px;margin-bottom:26px;}
.steps li{display:flex;gap:14px;}
.step-num{
  width:32px;height:32px;flex:none;border-radius:50%;
  background:var(--brand-600);color:#fff;
  font-family:var(--font-num);font-weight:700;font-size:14px;
  display:flex;align-items:center;justify-content:center;
}
.steps h3{font-size:17px;margin-bottom:4px;}
.steps p{font-size:15px;color:var(--ink-700);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item[open]{border-color:#CFE0FA;box-shadow:var(--shadow-md);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:16px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-600);}
.faq-icon{position:relative;width:18px;height:18px;flex:none;margin-top:4px;transition:transform .25s ease-out;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:2px;transition:transform .25s ease-out;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item[open] .faq-icon{transform:rotate(180deg);}
.faq-item[open] .faq-icon::after{transform:scaleY(0);}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--ink-700);}
.faq-body p + p{margin-top:10px;}

/* ---------- 收尾 CTA ---------- */
.cta-band{background:var(--brand-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:8px;}
.cta-inner p{font-size:15px;color:var(--ink-500);max-width:620px;}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.text-link{font-size:15px;font-weight:600;}
.text-link:hover{text-decoration:underline;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:40px;}
.footer-brand p{font-size:14px;color:var(--ink-500);margin-top:14px;max-width:320px;}
.footer-col h4{font-size:14px;color:var(--ink-900);margin-bottom:14px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:var(--ink-500);}
.footer-links a:hover{color:var(--brand-600);}
.subscribe-form{display:flex;gap:10px;}
.subscribe-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;font-size:14px;color:var(--ink-900);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.subscribe-form input::placeholder{color:#9AA9BC;}
.subscribe-form input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(20,102,214,.12);}
.form-note{font-size:13px;color:var(--ink-500);margin-top:10px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:18px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-500);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .mega-panel{width:720px;}
}
@media (max-width:1100px){
  .tier-layout{grid-template-columns:1fr;}
  .aside-card{position:static;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .mega-wrap{display:none;}
  .section{padding:64px 0;}
  .hero{padding:44px 0 56px;min-height:0;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .board-grid{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:repeat(2,1fr);}
  .flow-item::after{display:none;}
  .exchange-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .section{padding:52px 0;}
  .tier-track{
    display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;
    margin:0 -24px;padding:6px 24px 16px;-webkit-overflow-scrolling:touch;
  }
  .tier-track::-webkit-scrollbar{height:6px;}
  .tier-track::-webkit-scrollbar-thumb{background:#CFE0FA;border-radius:999px;}
  .tier-card{flex:0 0 78vw;scroll-snap-align:start;}
  .compare-grid{grid-template-columns:1fr;}
  .board-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-inner{align-items:flex-start;}
  .hero-card{padding:22px;}
  .board-num{font-size:28px;}
}
@media (max-width:560px){
  .container{padding:0 18px;}
  body{font-size:15px;}
  .board-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .cd-cell strong{font-size:22px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .tier-card{flex:0 0 84vw;}
}

/* roulang page: category4 */
:root{
  --brand-700:#0B4FB3;--brand-600:#1466D6;--brand-500:#3A86F0;--brand-100:#E4EFFF;--brand-50:#F2F7FF;
  --accent-600:#E8650A;--accent-500:#FF7A1A;--accent-100:#FFEEDF;
  --mint-500:#12BFA0;
  --success:#12B47A;--warning:#E8A21A;--error:#E0554A;
  --ink-900:#0E1A2B;--ink-700:#33455C;--ink-500:#66788F;
  --line:#E2E9F2;--bg:#F5F8FC;--surface:#FFFFFF;
  --r-card:14px;--r-sm:10px;--r-img:12px;
  --shadow-sm:0 1px 2px rgba(14,26,43,.06);
  --shadow-md:0 8px 24px -8px rgba(14,26,43,.12);
  --shadow-lg:0 18px 40px -16px rgba(20,102,214,.28);
  --maxw:1200px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.85;color:var(--ink-700);background:var(--bg);overflow-x:hidden}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-600);text-decoration:none}
a:hover{color:var(--brand-700)}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.35}
h1{font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1.28;letter-spacing:-.02em}
h2{font-size:clamp(23px,2.6vw,30px);font-weight:700}
h3{font-size:21px;font-weight:600}
p{margin:0 0 18px}
ul,ol{margin:0 0 18px;padding-left:0}
button{font-family:inherit}
input,button{font-size:15px}
::selection{background:var(--brand-100);color:var(--brand-700)}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:76px 0}
.section-head{max-width:760px;margin-bottom:32px}
.section-head .eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--brand-600);background:var(--brand-100);border-radius:999px;padding:5px 14px;margin-bottom:14px;letter-spacing:.02em}
.section-head h2{margin-bottom:12px;position:relative;padding-left:18px}
.section-head h2::before{content:"";position:absolute;left:0;top:9px;width:4px;height:20px;border-radius:2px;background:var(--brand-600)}
.section-head p{color:var(--ink-500);font-size:15.5px;margin:0}
.num{font-variant-numeric:tabular-nums;font-family:"DIN Alternate",Barlow,ui-monospace,monospace}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;font-size:15px;font-weight:600;line-height:1;border-radius:var(--r-sm);border:1px solid transparent;background:transparent;cursor:pointer;transition:transform .18s ease-out,background-color .18s,color .18s,border-color .18s,box-shadow .18s;text-align:center}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-accent{background:var(--accent-500);color:#fff}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(232,101,10,.6)}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-700)}
.btn-link{background:none;border:0;padding:6px 2px;color:var(--brand-600);font-weight:600}
.btn-link:hover{text-decoration:underline}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:active{transform:translateY(0)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;line-height:1.4;padding:4px 12px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-weight:500}
.badge-accent{background:var(--accent-100);color:var(--accent-600)}
.badge-mint{background:rgba(18,191,160,.14);color:#0E9C82}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:background .2s,border-color .2s,box-shadow .2s}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;gap:20px;height:76px;transition:height .2s ease}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{position:relative;width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,var(--brand-600),var(--brand-500));flex:none;overflow:hidden}
.brand-mark::before,.brand-mark::after{content:"";position:absolute;background:#fff;border-radius:2px;transform:rotate(-32deg)}
.brand-mark::before{width:3px;height:16px;left:9px;top:6px;opacity:.95}
.brand-mark::after{width:3px;height:11px;left:16px;top:9px;opacity:.7}
.brand-text{font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px;margin-right:auto}
.nav-link{position:relative;padding:9px 12px;border-radius:8px;font-size:15px;color:var(--ink-700);transition:color .18s,background-color .18s;white-space:nowrap}
.nav-link:hover{color:var(--brand-600);background:var(--brand-50)}
.nav-link.is-active{color:var(--brand-600);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;background:var(--brand-600)}
.header-actions{display:flex;align-items:center;gap:12px;flex:none}
.mega-wrap{position:relative}
.mega-trigger{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 14px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;color:var(--ink-700);font-size:14px;font-weight:600;cursor:pointer;transition:border-color .18s,color .18s,background-color .18s}
.mega-trigger:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-50)}
.mega-trigger svg{width:14px;height:14px;transition:transform .18s}
.mega-wrap.is-open .mega-trigger svg,.mega-wrap:hover .mega-trigger svg{transform:rotate(180deg)}
.mega-panel{position:absolute;right:0;top:calc(100% + 12px);width:760px;background:#fff;border-top:2px solid var(--brand-600);border-radius:12px;box-shadow:var(--shadow-lg);padding:22px;display:grid;grid-template-columns:1.05fr 1.25fr 1fr;gap:22px;opacity:0;visibility:hidden;transform:translateY(4px);transition:opacity .16s ease-out,transform .16s ease-out,visibility .16s}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel,.mega-wrap.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:13px;color:var(--ink-500);font-weight:600;letter-spacing:.06em;margin-bottom:12px}
.mega-list{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.mega-list a{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:8px;font-size:14px;color:var(--ink-700);transition:background-color .18s,color .18s}
.mega-list a:hover{background:var(--brand-50);color:var(--brand-600)}
.mega-dot{width:6px;height:6px;border-radius:50%;background:var(--brand-500);flex:none}
.mega-news{display:grid;gap:2px}
.mega-news a{display:block;padding:8px 0;border-bottom:1px dashed var(--line)}
.mega-news a:last-child{border-bottom:0}
.mega-news .t{display:block;font-size:14px;color:var(--ink-900);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .18s}
.mega-news a:hover .t{color:var(--brand-600)}
.mega-news .m{display:block;font-size:12.5px;color:var(--ink-500);margin-top:2px}
.mega-cta{background:var(--brand-50);border:1px solid var(--brand-100);border-radius:12px;padding:18px;display:flex;flex-direction:column;gap:10px}
.mega-cta strong{font-size:15px;color:var(--ink-900)}
.mega-cta p{font-size:13.5px;color:var(--ink-500);margin:0;line-height:1.7}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;cursor:pointer;flex-direction:column;gap:4px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-700);transition:transform .2s,opacity .2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(14,26,43,.45);opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;z-index:70}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:88vw;max-width:360px;background:#fff;z-index:80;transform:translateX(100%);transition:transform .25s ease;overflow-y:auto;padding:22px}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:36px;height:36px;border-radius:8px;border:1px solid var(--line);background:#fff;color:var(--ink-700);cursor:pointer;font-size:16px;line-height:1}
.drawer-group{font-size:13px;color:var(--ink-500);font-weight:600;letter-spacing:.06em;margin:20px 0 8px}
.drawer-nav{display:grid;gap:4px}
.drawer-nav a{display:block;padding:11px 12px;border-radius:var(--r-sm);font-size:15px;color:var(--ink-700);background:var(--bg)}
.drawer-nav a:hover{background:var(--brand-50);color:var(--brand-600)}
.drawer-nav a.is-active{background:var(--brand-100);color:var(--brand-700);font-weight:600}
body.no-scroll{overflow:hidden}

/* ---------- 页面头图 ---------- */
.page-hero{position:relative;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;color:#fff;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(118deg,rgba(11,79,179,.9),rgba(14,26,43,.66))}
.page-hero .container{position:relative;padding-top:52px;padding-bottom:64px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.75);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,.85)}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.breadcrumb .sep{opacity:.6}
.hero-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);color:#fff;margin-bottom:18px}
.page-hero h1{color:#fff;max-width:820px;margin-bottom:16px}
.page-hero .lead{max-width:660px;font-size:17px;color:rgba(255,255,255,.9);margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.page-hero .btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.55)}
.page-hero .btn-ghost:hover{background:#fff;color:var(--brand-700);border-color:#fff}
.hero-facts{display:flex;gap:34px;flex-wrap:wrap;margin-top:34px;padding-top:26px;border-top:1px solid rgba(255,255,255,.22)}
.hero-fact strong{display:block;font-size:28px;color:#fff;font-weight:700;letter-spacing:-.01em;font-variant-numeric:tabular-nums}
.hero-fact span{font-size:13.5px;color:rgba(255,255,255,.82)}

/* ---------- 文档式布局 ---------- */
.docs-layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:48px;padding:76px 0 88px}
.toc{position:sticky;top:96px;align-self:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-sm)}
.toc h2{font-size:15px;margin-bottom:14px}
.toc h2 + p{font-size:13px;color:var(--ink-500);margin:0 0 14px;line-height:1.7}
.toc-nav{display:grid;gap:2px}
.toc-nav a{display:block;padding:8px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;font-size:14px;color:var(--ink-700);transition:background-color .18s,color .18s,border-color .18s}
.toc-nav a:hover{background:var(--brand-50);color:var(--brand-600)}
.toc-nav a.is-current{border-left-color:var(--brand-600);background:var(--brand-50);color:var(--brand-700);font-weight:600}
.toc-help{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-500);line-height:1.75}

/* ---------- 步骤区 ---------- */
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow-sm);margin-bottom:22px;scroll-margin-top:96px;transition:box-shadow .18s,transform .18s}
.step:hover{box-shadow:var(--shadow-md)}
.step-head{display:flex;gap:16px;align-items:flex-start;margin-bottom:14px}
.step-num{flex:none;width:46px;height:46px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-size:16px;font-weight:700;display:grid;place-items:center;font-variant-numeric:tabular-nums}
.step-head h2{font-size:22px;margin-bottom:4px}
.step-head p{font-size:13.5px;color:var(--ink-500);margin:0}
.step p{max-width:740px}
.step-list{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:10px;max-width:760px}
.step-list li{position:relative;padding-left:20px;font-size:15.5px;color:var(--ink-700)}
.step-list li::before{content:"";position:absolute;left:0;top:12px;width:7px;height:7px;border-radius:2px;background:var(--brand-600)}
.step-figure{margin:22px 0 0;max-width:760px}
.step-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);background:var(--brand-50)}
.step-figure figcaption{font-size:13px;color:var(--ink-500);margin-top:10px}
.note{display:flex;gap:10px;background:var(--brand-50);border-left:4px solid var(--brand-600);border-radius:0 var(--r-sm) var(--r-sm) 0;padding:14px 18px;font-size:15px;color:var(--ink-700);max-width:760px;margin:0 0 18px}
.note .ic{flex:none;width:20px;height:20px;border-radius:50%;background:var(--brand-600);color:#fff;font-size:12px;display:grid;place-items:center;margin-top:5px}

/* ---------- 自检清单 ---------- */
.check-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:32px;box-shadow:var(--shadow-sm)}
.check-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.check-item{display:flex;gap:12px;align-items:flex-start;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-sm);padding:16px;transition:border-color .18s,background-color .18s}
.check-item:hover{border-color:var(--brand-500);background:var(--brand-50)}
.check-mark{flex:none;width:24px;height:24px;border-radius:7px;background:var(--mint-500);color:#fff;font-size:13px;display:grid;place-items:center;margin-top:3px}
.check-item strong{display:block;font-size:15.5px;color:var(--ink-900);font-weight:600;margin-bottom:2px}
.check-item span{font-size:14px;color:var(--ink-500);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .18s,box-shadow .18s}
.faq-item:hover{border-color:var(--brand-500);box-shadow:var(--shadow-sm)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink-900);cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex:none;width:22px;height:22px;border-radius:50%;background:var(--brand-100)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand-700);border-radius:2px;transform:translate(-50%,-50%);transition:transform .2s,opacity .2s}
.faq-icon::before{width:11px;height:2px}
.faq-icon::after{width:2px;height:11px}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-item[open] summary{color:var(--brand-700)}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--ink-700);max-width:820px}
.faq-body p{margin:0}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 88px}
.cta-inner{max-width:880px;margin:0 auto;text-align:center;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:48px 32px;box-shadow:var(--shadow-md)}
.cta-inner h2{margin-bottom:12px}
.cta-inner p{color:var(--ink-500);max-width:600px;margin:0 auto 26px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding-top:62px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:44px}
.footer-brand p{font-size:14px;color:var(--ink-500);margin:16px 0 0;max-width:320px;line-height:1.8}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink-900)}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.footer-links a{font-size:14.5px;color:var(--ink-700);transition:color .18s}
.footer-links a:hover{color:var(--brand-600);text-decoration:underline}
.subscribe-form{display:flex;gap:10px}
.subscribe-form input{flex:1;min-width:0;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;color:var(--ink-900);transition:border-color .18s,box-shadow .18s}
.subscribe-form input::placeholder{color:var(--ink-500)}
.subscribe-form input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(20,102,214,.12)}
.subscribe-form input:invalid{border-color:var(--error)}
.form-note{font-size:13px;color:var(--ink-500);margin:10px 0 0;line-height:1.7}
.footer-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding:18px 0;border-top:1px solid var(--line);font-size:13px;color:var(--ink-500)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .mega-panel{width:700px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .mega-wrap{display:none}
  .nav-toggle{display:flex}
  .docs-layout{grid-template-columns:1fr;gap:28px;padding:56px 0 64px}
  .toc{position:static}
  .toc-nav{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}
  .check-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .section{padding:60px 0}
}
@media (max-width:767px){
  .header-inner{height:64px}
  .site-header.is-scrolled .header-inner{height:60px}
  .brand-text{font-size:16.5px}
  .page-hero .container{padding-top:38px;padding-bottom:48px}
  .page-hero .lead{font-size:15.5px}
  .hero-facts{gap:22px;margin-top:26px;padding-top:20px}
  .hero-fact strong{font-size:23px}
  .toc-nav{grid-template-columns:1fr}
  .step{padding:22px}
  .step-head h2{font-size:19px}
  .check-panel{padding:22px}
  .faq-item summary{padding:16px 18px;font-size:15.5px}
  .faq-body{padding:0 18px 18px}
  .cta-inner{padding:34px 20px}
}
@media (max-width:559px){
  .container{padding:0 16px}
  .footer-grid{grid-template-columns:1fr}
  .subscribe-form{flex-wrap:wrap}
  .subscribe-form .btn{width:100%}
  .hero-actions .btn{width:100%}
  .step-num{width:40px;height:40px;font-size:15px}
  .section{padding:44px 0}
}

/* roulang page: category5 */
:root{
  --brand-700:#0B4FB3;
  --brand-600:#1466D6;
  --brand-500:#3A86F0;
  --brand-100:#E4EFFF;
  --brand-50:#F2F7FF;
  --accent-600:#E8650A;
  --accent-500:#FF7A1A;
  --accent-100:#FFEEDF;
  --mint-500:#12BFA0;
  --ink-900:#0E1A2B;
  --ink-700:#33455C;
  --ink-500:#66788F;
  --line:#E2E9F2;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --success:#12B47A;
  --warning:#E8A21A;
  --error:#E0554A;
  --shadow-sm:0 1px 2px rgba(14,26,43,.06);
  --shadow-md:0 8px 24px -8px rgba(14,26,43,.12);
  --shadow-lg:0 18px 40px -16px rgba(20,102,214,.28);
  --r-card:14px;
  --r-sm:10px;
  --r-img:12px;
  --r-pill:999px;
  --nav-h:76px;
  --nav-h-shrink:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--brand-700);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
button{font-family:inherit;cursor:pointer;}
input,button{font-size:15px;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}
.num{font-family:"DIN Alternate",Barlow,ui-monospace,monospace;font-variant-numeric:tabular-nums;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:80px 0;}
.section-tight{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.section-head .head-text{max-width:760px;}
.h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;position:relative;padding-left:16px;}
.h2::before{content:"";position:absolute;left:0;top:.34em;width:4px;height:20px;border-radius:2px;background:var(--brand-600);}
.h3{font-size:21px;line-height:1.45;}
.lead{margin-top:12px;color:var(--ink-500);font-size:15.5px;max-width:740px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-700);background:var(--brand-100);border-radius:var(--r-pill);padding:5px 14px;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:height .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:var(--shadow-sm);}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--nav-h);transition:height .2s ease-out;}
.site-header.is-stuck .header-inner{height:var(--nav-h-shrink);}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500));
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:50%;
  border:2px solid #fff;border-bottom-color:transparent;transform:rotate(-35deg);
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:-.02em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap;}
.nav-link{
  position:relative;display:inline-block;padding:9px 12px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--ink-700);white-space:nowrap;
  transition:color .18s ease-out,background-color .18s ease-out;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-50);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-600);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}

/* mega */
.mega-wrap{position:relative;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;padding:9px 14px;border-radius:var(--r-sm);
  background:var(--surface);border:1px solid var(--line);color:var(--ink-700);font-weight:500;
  transition:border-color .18s ease-out,color .18s ease-out,background-color .18s ease-out;
}
.mega-trigger:hover,.mega-trigger[aria-expanded="true"]{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-50);}
.mega-caret{width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 12px);width:760px;max-width:calc(100vw - 40px);
  background:var(--surface);border-radius:12px;box-shadow:var(--shadow-lg);
  border-top:2px solid var(--brand-600);padding:24px;
  display:grid;grid-template-columns:1fr 1.1fr 1fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .16s ease-out,transform .16s ease-out,visibility .16s;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel,.mega-wrap.is-open .mega-panel{
  opacity:1;visibility:visible;transform:translateY(0);
}
.mega-col h5{margin:0 0 12px;font-size:13px;font-weight:600;color:var(--ink-500);letter-spacing:.04em;}
.mega-list li+li{margin-top:6px;}
.mega-list a{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--r-sm);color:var(--ink-700);font-size:14.5px;transition:background-color .18s ease-out,color .18s ease-out;}
.mega-list a:hover{background:var(--brand-50);color:var(--brand-700);}
.mega-dot{width:6px;height:6px;border-radius:50%;background:var(--brand-500);flex:0 0 auto;}
.mega-post{display:block;padding:8px 10px;border-radius:var(--r-sm);color:var(--ink-700);transition:background-color .18s ease-out;}
.mega-post:hover{background:var(--brand-50);color:var(--brand-700);}
.mega-post span{display:block;font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.mega-post time{font-size:12.5px;color:var(--ink-500);}
.mega-card{
  display:flex;flex-direction:column;justify-content:center;gap:10px;
  background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-card);padding:18px;
}
.mega-card strong{font-size:15px;color:var(--ink-900);}
.mega-card p{font-size:13.5px;color:var(--ink-500);line-height:1.7;}

.menu-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--surface);align-items:center;justify-content:center;gap:4px;flex-direction:column;
}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);}
.drawer{position:fixed;inset:0;z-index:120;visibility:hidden;}
.drawer.is-open{visibility:visible;}
.drawer-mask{
  position:absolute;inset:0;background:rgba(14,26,43,.45);opacity:0;transition:opacity .2s ease-out;
}
.drawer.is-open .drawer-mask{opacity:1;}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:88vw;max-width:360px;background:var(--surface);
  padding:20px;overflow-y:auto;transform:translateX(100%);transition:transform .24s ease-out;box-shadow:var(--shadow-lg);
}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{width:38px;height:38px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface);color:var(--ink-700);font-size:18px;line-height:1;}
.drawer-group{margin:20px 0 10px;font-size:13px;font-weight:600;color:var(--ink-500);letter-spacing:.04em;}
.drawer-nav a{display:block;padding:12px 12px;border-radius:var(--r-sm);color:var(--ink-700);font-size:15.5px;border:1px solid transparent;}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700);font-weight:600;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--brand-600);color:#fff;}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--accent-500);color:#fff;}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);}
.btn-accent:active{transform:translateY(0);}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-700);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600);}
.text-link:hover{text-decoration:underline;color:var(--brand-700);}
.text-link .arrow{transition:transform .18s ease-out;}
.text-link:hover .arrow{transform:translateX(4px);}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:3px 11px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;background:var(--brand-100);color:var(--brand-700);white-space:nowrap;
}
.badge-accent{background:var(--accent-100);color:var(--accent-600);}
.badge-mint{background:rgba(18,191,160,.12);color:#0E9C82;}

/* ---------- hero ---------- */
.hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(11,79,179,.82) 0%,rgba(20,102,214,.66) 46%,rgba(14,26,43,.45) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover,cover;background-position:center,center;
}
.hero-inner{display:grid;grid-template-columns:1.35fr .95fr;gap:48px;align-items:center;padding:84px 0 76px;}
.hero h1{color:#fff;font-size:clamp(28px,4vw,44px);line-height:1.28;letter-spacing:-.02em;max-width:80%;}
.hero .hero-sub{margin-top:18px;font-size:16.5px;color:rgba(255,255,255,.9);max-width:640px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-tags span{
  font-size:13px;font-weight:600;padding:5px 13px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);color:#fff;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-actions .btn-ghost{background:rgba(255,255,255,.94);border-color:transparent;color:var(--brand-700);}
.hero-actions .btn-ghost:hover{background:#fff;color:var(--brand-700);}
.hero-panel{
  background:var(--surface);color:var(--ink-700);border-radius:var(--r-card);
  box-shadow:var(--shadow-md);padding:24px;
}
.hero-panel h3{font-size:17px;margin-bottom:6px;}
.hero-panel .panel-note{font-size:13.5px;color:var(--ink-500);}
.countdown{display:flex;gap:10px;margin:16px 0 18px;}
.countdown div{
  flex:1;text-align:center;background:var(--brand-50);border:1px solid var(--brand-100);
  border-radius:var(--r-sm);padding:10px 6px;
}
.countdown b{display:block;font-size:24px;color:var(--brand-700);line-height:1.2;}
.countdown span{font-size:12.5px;color:var(--ink-500);}
.panel-list li{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-top:1px solid var(--line);font-size:14.5px;}
.panel-list li:first-child{border-top:0;}
.panel-list strong{color:var(--ink-900);font-weight:600;}

/* ---------- filter chips ---------- */
.filter-bar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 20px;box-shadow:var(--shadow-sm);margin-top:-34px;position:relative;z-index:5;
}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  padding:7px 16px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--surface);
  color:var(--ink-700);font-size:14px;font-weight:500;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.chip:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-50);}
.chip.is-on{background:var(--brand-600);border-color:var(--brand-600);color:#fff;font-weight:600;}
.filter-meta{font-size:13.5px;color:var(--ink-500);}
.filter-meta b{color:var(--brand-700);font-size:16px;}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--brand-500),var(--brand-100));
  border-radius:2px;
}
.tl-item{position:relative;padding-bottom:26px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:26px;width:14px;height:14px;border-radius:50%;
  background:var(--surface);border:3px solid var(--brand-500);
}
.tl-item.is-top::before{border-color:var(--accent-500);background:var(--accent-100);}
.tl-date{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand-700);
  background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-pill);
  padding:3px 12px;margin-bottom:10px;
}
.notice-card{
  display:grid;grid-template-columns:1fr 208px;gap:22px;align-items:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.notice-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand-100);}
.notice-card.no-thumb{grid-template-columns:1fr;}
.notice-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px;}
.notice-title{font-size:19px;line-height:1.5;}
.notice-title a{color:var(--ink-900);}
.notice-title a:hover{color:var(--brand-600);}
.notice-desc{margin-top:10px;font-size:15px;color:var(--ink-500);}
.notice-foot{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:14px;font-size:13.5px;color:var(--ink-500);}
.notice-thumb{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);background:var(--brand-50);
}

/* ---------- rhythm ---------- */
.rhythm-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.rhythm-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-sm);transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.rhythm-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.rhythm-time{font-size:26px;font-weight:700;color:var(--brand-700);}
.rhythm-card h3{font-size:18px;margin:8px 0 8px;}
.rhythm-card p{font-size:14.5px;color:var(--ink-500);}

/* ---------- subscribe ---------- */
.subscribe-band{
  background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-card);
  padding:34px;display:grid;grid-template-columns:1.2fr 1fr;gap:32px;align-items:center;
}
.subscribe-form{display:flex;gap:10px;}
.subscribe-form input{
  flex:1;height:44px;padding:0 14px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--surface);color:var(--ink-900);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.subscribe-form input::placeholder{color:var(--ink-500);}
.subscribe-form input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(20,102,214,.12);}
.form-note{margin-top:10px;font-size:13px;color:var(--ink-500);}

/* ---------- FAQ ---------- */
.faq{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);}
.faq-item+.faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink-900);
  transition:background-color .18s ease-out;
}
.faq-q:hover{background:var(--brand-50);}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1px solid var(--brand-100);
  display:flex;align-items:center;justify-content:center;color:var(--brand-600);font-size:16px;line-height:1;
  transition:transform .2s ease-out,background-color .2s ease-out;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand-100);}
.faq-a{display:none;padding:0 22px 22px;font-size:15px;color:var(--ink-700);line-height:1.85;}
.faq-item.is-open .faq-a{display:block;}

/* ---------- CTA ---------- */
.cta-card{
  background:var(--brand-600);color:#fff;border-radius:var(--r-card);
  padding:44px;text-align:center;box-shadow:var(--shadow-lg);
}
.cta-card h2{color:#fff;font-size:clamp(22px,2.6vw,30px);}
.cta-card p{color:rgba(255,255,255,.88);margin-top:12px;font-size:15.5px;}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:26px;}
.cta-card .btn-ghost{background:rgba(255,255,255,.95);border-color:transparent;color:var(--brand-700);}

/* ---------- footer ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:56px 0 24px;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:32px;}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--ink-500);max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:14px;}
.footer-links li+li{margin-top:9px;}
.footer-links a{font-size:14.5px;color:var(--ink-700);}
.footer-links a:hover{color:var(--brand-600);}
.footer-bottom{
  margin-top:36px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-500);
}

/* ---------- sticky mobile cta ---------- */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:var(--surface);box-shadow:0 -8px 24px -12px rgba(14,26,43,.28);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:14px;
}
.sticky-cta span{font-size:13.5px;color:var(--ink-500);}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .mega-panel{width:680px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .menu-toggle{display:flex;}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:64px 0 60px;}
  .hero h1{max-width:100%;}
  .rhythm-grid{grid-template-columns:1fr 1fr;}
  .subscribe-band{grid-template-columns:1fr;gap:22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .notice-card{grid-template-columns:1fr 168px;}
  .section{padding:64px 0;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .header-actions .btn{display:none;}
  .hero-inner{padding:48px 0 52px;}
  .hero .hero-sub{font-size:15.5px;}
  .filter-bar{margin-top:-24px;padding:14px 16px;}
  .timeline{padding-left:26px;}
  .timeline::before{left:6px;}
  .tl-item::before{left:-25px;width:12px;height:12px;top:22px;}
  .notice-card{grid-template-columns:1fr;gap:16px;padding:18px;}
  .notice-thumb{order:-1;aspect-ratio:16/9;}
  .rhythm-grid{grid-template-columns:1fr;}
  .cta-card{padding:30px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .section{padding:52px 0;}
}
@media (max-width:559px){
  .brand-text{font-size:16px;}
  .hero h1{font-size:26px;}
  .countdown b{font-size:20px;}
  .notice-title{font-size:17px;}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
  .sticky-cta{display:flex;}
  body{padding-bottom:64px;}
  .section{padding:44px 0;}
  .section-head{margin-bottom:22px;}
}