/* roulang page: index */
/* ===== 1. 设计变量 ===== */
:root{
  --lava:#FF5C29;
  --lava-ink:#180702;
  --mint:#1FE0B8;
  --mint-deep:#0B7C67;
  --ink:#0B0C10;
  --ink-2:#15171E;
  --ink-3:#1B1E26;
  --line-d:rgba(255,255,255,.08);
  --line-d-2:rgba(255,255,255,.18);
  --t-1:#F4F5F7;
  --t-2:#9AA3B2;
  --paper:#F7F5F1;
  --paper-2:#FFFFFF;
  --p-1:#14161B;
  --p-2:#5C6270;
  --p-line:#E4E0D9;
  --r-card:18px;
  --r-img:16px;
  --r-input:12px;
  --r-pill:999px;
  --sh-d:0 24px 60px rgba(0,0,0,.45);
  --sh-p:0 10px 30px rgba(20,22,28,.08);
  --maxw:1280px;
  --sp:24px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
/* ===== 2. 基础重置 ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.75;
  background:var(--ink);color:var(--t-1);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,p,ul,ol,li,figure{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--lava);outline-offset:3px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
/* ===== 3. 容器与板块 ===== */
.shell{width:100%;max-width:var(--maxw);margin:0 auto;padding-left:var(--sp);padding-right:var(--sp)}
@media (min-width:1440px){.shell{max-width:1400px}}
.sec{padding:96px 0;position:relative}
.sec-dark{background:var(--ink);color:var(--t-1)}
.sec-paper{background:var(--paper);color:var(--p-1)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.sec-kicker{font-size:13px;letter-spacing:.16em;font-weight:700;color:var(--mint);margin-bottom:10px}
.sec-paper .sec-kicker{color:var(--mint-deep)}
.sec-title{font-size:clamp(26px,3.4vw,44px);font-weight:800;letter-spacing:-.01em;line-height:1.2}
.sec-note{font-size:14px;color:var(--t-2);letter-spacing:.03em}
.sec-paper .sec-note{color:var(--p-2)}
.txt-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:700;color:var(--lava)}
.txt-link .arrow{transition:transform .18s var(--ease)}
.txt-link:hover .arrow{transform:translateX(6px)}
.sec-paper .txt-link{color:#D8400F}
/* ===== 4. 徽章 / 按钮 / 表单 ===== */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;letter-spacing:.04em;padding:4px 11px;border-radius:var(--r-pill);line-height:1.6;white-space:nowrap}
.badge-mint{background:rgba(31,224,184,.14);color:var(--mint)}
.sec-paper .badge-mint{background:rgba(31,224,184,.22);color:var(--mint-deep)}
.badge-lava{background:rgba(255,92,41,.16);color:var(--lava)}
.badge-ghost{border:1px solid var(--line-d-2);color:var(--t-2)}
.sec-paper .badge-ghost{border-color:var(--p-line);color:var(--p-2)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);font-size:15px;font-weight:700;padding:13px 24px;line-height:1.2;white-space:nowrap;
  transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),filter .18s var(--ease);}
.btn-primary{background:var(--lava);color:var(--lava-ink)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border:1px solid var(--line-d-2);color:var(--t-1)}
.btn-ghost:hover{border-color:var(--lava);color:var(--lava)}
.btn-outline-dark{background:transparent;border:1px solid rgba(20,22,28,.2);color:var(--p-1)}
.btn-outline-dark:hover{border-color:var(--lava);color:#D8400F}
/* ===== 5. 浮动 Dock 导航 ===== */
.dock-wrap{position:fixed;top:16px;left:0;right:0;z-index:80;display:flex;justify-content:center;padding:0 16px;pointer-events:none}
.dock{pointer-events:auto;width:100%;max-width:1080px;display:flex;align-items:center;gap:14px;padding:10px 12px 10px 18px;
  border-radius:var(--r-pill);background:rgba(11,12,16,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line-d);box-shadow:0 10px 30px rgba(0,0,0,.28);
  transition:padding .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease)}
.dock.is-scrolled{padding:5px 12px 5px 18px;background:rgba(11,12,16,.9);box-shadow:0 18px 44px rgba(0,0,0,.5)}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--t-1);white-space:nowrap}
.logo-mark{width:32px;height:32px;border-radius:10px;background:var(--lava);color:var(--lava-ink);display:grid;place-items:center;
  font-weight:900;font-size:17px;line-height:1;flex:0 0 32px}
.sec-paper .logo,.site-footer .logo{color:var(--t-1)}
.dock-nav{display:flex;align-items:center;gap:2px;margin:0 auto}
.dock-nav a{font-size:14.5px;color:var(--t-2);padding:9px 15px;border-radius:var(--r-pill);font-weight:600}
.dock-nav a:hover{color:var(--t-1);background:rgba(255,255,255,.07)}
.dock-nav a.is-active{color:var(--lava);background:rgba(255,92,41,.13)}
.dock-actions{display:flex;align-items:center;gap:10px}
.icon-btn{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line-d);color:var(--t-2);transition:.18s var(--ease)}
.icon-btn:hover{color:var(--lava);border-color:var(--lava)}
.dock-cta{padding:10px 18px;font-size:14px}
.menu-btn{display:none;width:40px;height:40px;border-radius:50%;border:1px solid var(--line-d);align-items:center;justify-content:center;flex-direction:column;gap:4px}
.menu-btn span{display:block;width:16px;height:2px;background:var(--t-1);border-radius:2px;transition:.2s var(--ease)}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer{position:fixed;inset:0;z-index:70;background:rgba(11,12,16,.98);padding:110px 24px 40px;
  display:flex;flex-direction:column;opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease)}
.drawer.is-open{opacity:1;visibility:visible}
.drawer a{font-size:22px;font-weight:800;padding:18px 0;border-bottom:1px solid var(--line-d);opacity:0;transform:translateY(14px);transition:.32s var(--ease)}
.drawer.is-open a{opacity:1;transform:none}
.drawer.is-open a:nth-child(1){transition-delay:.06s}
.drawer.is-open a:nth-child(2){transition-delay:.12s}
.drawer.is-open a:nth-child(3){transition-delay:.18s}
.drawer-foot{margin-top:auto;font-size:13px;color:var(--t-2)}
@media (max-width:1024px){
  .dock-nav{display:none}
  .dock-cta{display:none}
  .menu-btn{display:flex}
  .dock{justify-content:space-between;padding:8px 10px 8px 16px}
}
/* ===== 6. Hero ===== */
.hero{position:relative;min-height:84vh;display:flex;align-items:flex-end;background:var(--ink);overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;background-image:url(/assets/images/backpic/back-1.webp);background-size:cover;background-position:center;opacity:.6;z-index:-2}
.hero-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(11,12,16,.97) 0%,rgba(11,12,16,.88) 34%,rgba(11,12,16,.42) 72%,rgba(11,12,16,.72) 100%)}
.hero-inner{padding-top:150px;padding-bottom:88px;max-width:900px}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;font-weight:700;color:var(--mint);margin-bottom:22px}
.hero-eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--mint);display:block}
.hero-title{font-size:clamp(32px,5.2vw,70px);font-weight:900;letter-spacing:-.02em;line-height:1.1;margin-bottom:22px}
.hero-title span{display:block;opacity:0;transform:translateY(18px);animation:rise .6s var(--ease) forwards}
.hero-title span:nth-child(1){animation-delay:.06s}
.hero-title span:nth-child(2){animation-delay:.2s}
@keyframes rise{to{opacity:1;transform:none}}
.hero-title span:nth-child(2){color:var(--t-1)}
.hero-sub{font-size:17px;color:var(--t-2);max-width:600px;margin-bottom:34px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px}
.chip-row{display:flex;gap:10px;flex-wrap:wrap}
.chip-row li{font-size:13px;color:var(--t-2);border:1px solid var(--line-d-2);border-radius:var(--r-pill);padding:6px 14px;letter-spacing:.03em}
@media (max-width:640px){
  .hero{min-height:68vh}
  .hero-inner{padding-top:120px;padding-bottom:56px}
  .hero-sub{font-size:15.5px}
  .hero-cta .btn{flex:1 1 auto}
}
/* ===== 7. 数据条 ===== */
.trust{background:var(--ink-2);border-top:1px solid var(--line-d);border-bottom:1px solid var(--line-d)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-d)}
.trust-item{background:var(--ink-2);padding:34px 26px}
.trust-num{display:block;font-size:32px;font-weight:900;letter-spacing:-.01em;color:var(--mint);line-height:1.2;
  font-family:"Oswald","Impact",system-ui,sans-serif}
.trust-label{display:block;font-size:14px;color:var(--t-2);margin-top:6px}
@media (max-width:1024px){.trust-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.trust-item{padding:24px 18px}.trust-num{font-size:26px}}
/* ===== 8. 横滑片库 ===== */
.rail-wrap{position:relative}
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 2px 18px;-ms-overflow-style:none;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.pcard{position:relative;flex:0 0 260px;scroll-snap-align:start;border-radius:var(--r-card);overflow:hidden;background:var(--ink-3);
  border:1px solid var(--line-d);transition:transform .18s var(--ease),border-color .18s var(--ease);display:block}
.pcard:hover{transform:translateY(-4px);border-color:var(--lava)}
.pcard-media{aspect-ratio:3/4;overflow:hidden;background:var(--ink-2)}
.pcard-media img{width:100%;height:100%;object-fit:cover;transition:transform .2s var(--ease)}
.pcard:hover .pcard-media img{transform:scale(1.03)}
.pcard-body{position:absolute;left:0;right:0;bottom:0;padding:16px 16px 18px;
  background:linear-gradient(to top,rgba(11,12,16,.96) 12%,rgba(11,12,16,.55) 62%,rgba(11,12,16,0) 100%)}
.pcard-title{font-size:19px;font-weight:800;line-height:1.35;margin:10px 0 6px}
.pcard .meta{font-size:13px;color:var(--t-2);letter-spacing:.04em}
.rail-btn{position:absolute;top:40%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;
  background:rgba(11,12,16,.8);border:1px solid var(--line-d-2);color:var(--t-1);display:none;place-items:center;font-size:20px;z-index:5;transition:.18s var(--ease)}
.rail-btn:hover{border-color:var(--lava);color:var(--lava)}
.rail-prev{left:-22px}
.rail-next{right:-22px}
@media (min-width:1024px){.rail-btn{display:grid}}
@media (max-width:640px){
  .pcard{flex:0 0 200px}
  .rail{gap:14px}
}
/* ===== 9. 榜单 ===== */
.board-grid{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start}
.board-lead{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-d);min-height:420px;display:block;
  transition:transform .18s var(--ease),border-color .18s var(--ease)}
.board-lead:hover{transform:translateY(-4px);border-color:var(--lava)}
.board-lead img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .2s var(--ease)}
.board-lead:hover img{transform:scale(1.03)}
.board-lead-info{position:absolute;left:0;right:0;bottom:0;padding:26px;
  background:linear-gradient(to top,rgba(11,12,16,.96) 20%,rgba(11,12,16,0) 100%)}
.board-lead-info h3{font-size:26px;font-weight:800;margin:12px 0 8px;letter-spacing:-.01em}
.board-lead-info p{font-size:14px;color:var(--t-2);letter-spacing:.03em}
.rank-list{border-top:1px solid var(--line-d)}
.rank-row{display:grid;grid-template-columns:56px 1fr auto auto;align-items:center;gap:18px;padding:20px 16px;
  border-bottom:1px solid var(--line-d);transition:background .18s var(--ease)}
.rank-row:hover{background:rgba(255,255,255,.04)}
.rank-num{font-family:"Oswald","Impact",system-ui,sans-serif;font-size:30px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px var(--lava);letter-spacing:.02em}
.rank-row h3{font-size:17px;font-weight:700;line-height:1.4}
.rank-row .meta{font-size:13px;color:var(--t-2);margin-top:4px}
.rank-row time{font-size:13px;color:var(--t-2);letter-spacing:.03em;white-space:nowrap}
@media (max-width:1024px){
  .board-grid{grid-template-columns:1fr}
  .board-lead{min-height:360px}
}
@media (max-width:640px){
  .rank-row{grid-template-columns:44px 1fr;gap:12px;padding:16px 10px}
  .rank-row .badge,.rank-row time{grid-column:2}
  .rank-num{font-size:24px}
}
/* ===== 10. 最新信息（CMS 区） ===== */
.filters{display:flex;gap:8px;flex-wrap:wrap}
.filter{font-size:13.5px;padding:7px 16px;border-radius:var(--r-pill);border:1px solid var(--p-line);color:var(--p-2);
  background:transparent;transition:.18s var(--ease);cursor:pointer}
.filter:hover{border-color:var(--lava);color:#D8400F}
.filter.is-on{background:var(--lava);border-color:var(--lava);color:var(--lava-ink);font-weight:700}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ncard{background:var(--paper-2);border:1px solid var(--p-line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-p);transition:transform .18s var(--ease),border-color .18s var(--ease);min-height:230px}
.ncard:hover{transform:translateY(-4px);border-color:var(--lava)}
.ncard-link{display:flex;flex-direction:column;height:100%;padding:24px 22px}
.ncard-title{font-size:19px;font-weight:800;line-height:1.45;color:var(--p-1);margin:14px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:56px}
.ncard-sum{font-size:14.5px;color:var(--p-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:50px}
.ncard-foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--p-line)}
.ncard-foot time{font-size:13px;color:var(--p-2);letter-spacing:.04em}
.read-more{font-size:13.5px;font-weight:700;color:#D8400F;display:inline-flex;align-items:center;gap:6px}
.ncard:hover .read-more .arrow{transform:translateX(6px)}
.read-more .arrow{transition:transform .18s var(--ease)}
.empty-state{grid-column:1/-1;min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--paper-2);border:1px dashed var(--p-line);border-radius:var(--r-card);padding:48px 24px;text-align:center}
.empty-icon{width:44px;height:44px;border-radius:50%;border:1px solid var(--p-line);display:grid;place-items:center;color:var(--p-2);font-size:18px}
.empty-state p{font-size:14px;color:var(--p-2)}
.sec-foot{display:flex;justify-content:center;margin-top:44px}
@media (max-width:1024px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.news-grid{grid-template-columns:1fr}}
/* ===== 11. 分类导览 ===== */
.guide-stack{display:flex;flex-direction:column;gap:28px}
.gcard{display:grid;grid-template-columns:1fr 1fr;background:var(--ink);color:var(--t-1);border-radius:22px;overflow:hidden;
  border:1px solid rgba(11,12,16,.08);box-shadow:var(--sh-p);transition:transform .18s var(--ease)}
.gcard:hover{transform:translateY(-4px)}
.gcard-media{position:relative;min-height:330px;overflow:hidden;background:var(--ink-2)}
.gcard-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.9;transition:transform .25s var(--ease)}
.gcard:hover .gcard-media img{transform:scale(1.03)}
.gcard-body{padding:46px 44px}
.gcard-body h3{font-size:clamp(22px,2.4vw,30px);font-weight:800;letter-spacing:-.01em;margin:16px 0 14px}
.gcard-body p{font-size:15.5px;color:var(--t-2);line-height:1.8;margin-bottom:20px}
.gcard-list{display:flex;flex-direction:column;gap:10px;margin-bottom:28px}
.gcard-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--t-1);opacity:.92}
.gcard-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--mint)}
.gcard-rev .gcard-media{order:2}
@media (max-width:1024px){
  .gcard{grid-template-columns:1fr}
  .gcard-rev .gcard-media{order:0}
  .gcard-media{min-height:240px}
  .gcard-body{padding:34px 26px}
}
/* ===== 12. FAQ ===== */
.faq-shell{display:grid;grid-template-columns:4fr 8fr;gap:48px}
.faq-head h2{margin-top:10px}
.faq{border-top:1px solid var(--p-line)}
.faq-item{border-bottom:1px solid var(--p-line)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;text-align:left;
  font-size:18px;font-weight:700;color:var(--p-1);padding:22px 4px;transition:color .18s var(--ease)}
.faq-q:hover{color:#D8400F}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px;color:var(--p-2)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{top:0;left:7px;width:2px;height:16px}
.faq-item.is-open .faq-icon{color:var(--lava)}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{font-size:15.5px;color:var(--p-2);line-height:1.85;padding:0 44px 24px 4px}
@media (max-width:1024px){
  .faq-shell{grid-template-columns:1fr;gap:28px}
  .faq-q{font-size:17px;padding:18px 2px}
  .faq-a p{padding:0 24px 20px 2px}
}
/* ===== 13. 订阅 CTA ===== */
.cta-band{background:var(--ink-2);border-top:1px solid var(--line-d)}
.cta-inner{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.cta-copy h2{font-size:clamp(26px,3.2vw,42px);font-weight:800;letter-spacing:-.01em;line-height:1.22;margin-bottom:16px}
.cta-copy p{font-size:16px;color:var(--t-2);max-width:440px}
.sub-form{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center}
.sub-form input{width:100%;height:52px;padding:0 18px;border-radius:var(--r-input);border:1px solid var(--line-d-2);
  background:rgba(255,255,255,.05);color:var(--t-1);transition:.18s var(--ease)}
.sub-form input::placeholder{color:var(--t-2)}
.sub-form input:focus{outline:none;border-color:var(--lava);box-shadow:0 0 0 2px rgba(255,92,41,.28);background:rgba(255,255,255,.08)}
.sub-form .btn{height:52px}
.form-tip{grid-column:1/-1;font-size:12.5px;color:var(--t-2);letter-spacing:.02em}
.form-tip.is-error{color:var(--lava)}
@media (max-width:1024px){.cta-inner{grid-template-columns:1fr;gap:28px}}
@media (max-width:520px){
  .sub-form{grid-template-columns:1fr}
  .sub-form .btn{width:100%}
}
/* ===== 14. 页脚 ===== */
.site-footer{background:var(--ink);border-top:1px solid var(--line-d);padding:72px 0 32px;color:var(--t-2)}
.foot-grid{display:grid;grid-template-columns:4fr 2.4fr 2.6fr 3fr;gap:40px;padding-bottom:48px}
.foot-brand p{font-size:14px;line-height:1.85;margin-top:18px;max-width:320px}
.foot-col h3{font-size:14px;font-weight:700;color:var(--t-1);letter-spacing:.06em;margin-bottom:18px}
.foot-col li{margin-bottom:11px;font-size:14px}
.foot-col a{color:var(--t-2)}
.foot-col a:hover{color:var(--lava)}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line-d);padding-top:24px;font-size:13px;letter-spacing:.03em}
@media (max-width:1024px){.foot-grid{grid-template-columns:repeat(2,1fr);gap:32px}}
@media (max-width:640px){.foot-grid{grid-template-columns:1fr;gap:28px}.site-footer{padding:56px 0 28px}}
/* ===== 15. 动效与无障碍 ===== */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
  .hero-title span{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --lava:#FF5C29;
  --lava-deep:#E64A18;
  --lava-soft:rgba(255,92,41,.12);
  --mint:#1FE0B8;
  --mint-soft:rgba(31,224,184,.14);
  --ink:#0B0C10;
  --surface:#15171E;
  --card:#1B1E26;
  --line:rgba(255,255,255,.08);
  --text:#F4F5F7;
  --muted:#9AA3B2;
  --paper:#F7F5F1;
  --paper-text:#14161B;
  --paper-muted:#5C6270;
  --paper-line:#E4E0D9;
  --r-pill:999px;
  --r-card:18px;
  --r-img:16px;
  --r-input:12px;
  --sh-dark:0 24px 60px rgba(0,0,0,.45);
  --sh-light:0 10px 30px rgba(20,22,28,.08);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px;
  --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;padding:0;background:var(--paper);color:var(--paper-text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,figure,ul,ol,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input{font:inherit}
button{cursor:pointer;border:0;background:none;color:inherit}
:focus-visible{outline:2px solid var(--lava);outline-offset:3px;border-radius:8px}
::selection{background:var(--lava);color:#fff}
.shell{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.shell{max-width:1400px}}

/* ============ 浮动 Dock 导航 ============ */
.dock-wrap{position:fixed;top:16px;left:0;right:0;z-index:80;display:flex;flex-direction:column;align-items:center;padding:0 16px;pointer-events:none}
.dock{pointer-events:auto;width:100%;max-width:1080px;display:flex;align-items:center;gap:16px;
  background:rgba(11,12,16,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:12px 14px 12px 20px;
  box-shadow:0 12px 34px rgba(0,0,0,.32);transition:padding .22s ease,box-shadow .22s ease}
.dock.is-condensed{padding:8px 14px 8px 18px;box-shadow:0 18px 46px rgba(0,0,0,.5)}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em;color:var(--text);white-space:nowrap}
.logo-mark{width:30px;height:30px;border-radius:9px;background:var(--lava);color:#fff;display:grid;place-items:center;
  font-size:16px;font-weight:900;line-height:1;font-family:"Oswald",Impact,system-ui,sans-serif}
.logo-text{font-size:16px}
.dock-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.dock-nav a{font-size:14px;color:var(--muted);padding:8px 14px;border-radius:var(--r-pill);transition:color .18s ease,background-color .18s ease}
.dock-nav a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.dock-nav a.is-active{color:var(--lava);background:var(--lava-soft)}
.dock-actions{display:flex;align-items:center;gap:10px}
.dock-search{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.06);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:6px 12px;transition:border-color .18s ease}
.dock-search:focus-within{border-color:var(--lava)}
.dock-search i{font-size:13px;color:var(--muted)}
.dock-search input{width:132px;background:transparent;border:0;color:var(--text);font-size:13px;outline:none}
.dock-search input::placeholder{color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);
  font-weight:700;font-size:15px;padding:12px 22px;border:1px solid transparent;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:var(--lava);color:#fff}
.btn-primary:hover{background:#ff7043;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-line{border-color:var(--line);color:var(--text);background:transparent}
.btn-line:hover{border-color:var(--lava);color:var(--lava)}
.btn-line-paper{border-color:var(--paper-line);color:var(--paper-text);background:#fff}
.btn-line-paper:hover{border-color:var(--lava);color:var(--lava);transform:translateY(-2px)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--lava)}
.text-link i{transition:transform .18s ease}
.text-link:hover i{transform:translateX(6px)}
.dock-burger{display:none;width:38px;height:38px;border-radius:50%;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:4px}
.dock-burger span{display:block;width:16px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.dock-drawer{pointer-events:auto;width:100%;max-width:1080px;margin-top:10px;background:rgba(11,12,16,.96);
  border:1px solid var(--line);border-radius:24px;padding:14px;display:none;flex-direction:column;gap:4px;
  box-shadow:var(--sh-dark)}
.dock-drawer.is-open{display:flex}
.dock-drawer a{padding:14px 18px;border-radius:14px;color:var(--text);font-size:15px;opacity:0;transform:translateY(10px);
  animation:drawerUp .32s ease forwards}
.dock-drawer a:hover{background:rgba(255,255,255,.06);color:var(--lava)}
@keyframes drawerUp{to{opacity:1;transform:translateY(0)}}

/* ============ 文章页头 ============ */
.page-hero{position:relative;background:var(--ink);color:var(--text);overflow:hidden;
  padding:150px 0 72px}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.3}
.page-hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,12,16,.86) 0%,rgba(11,12,16,.94) 62%,rgba(11,12,16,.99) 100%)}
.page-hero .shell{position:relative;z-index:2;max-width:1000px}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);letter-spacing:.02em}
.crumbs li{display:inline-flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:rgba(255,255,255,.28)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--lava)}
.crumbs [aria-current="page"]{color:var(--text);display:inline-block;max-width:min(560px,72vw);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.page-hero h1{font-size:clamp(28px,4.4vw,52px);font-weight:900;line-height:1.18;letter-spacing:-.02em;
  margin:22px 0 26px;animation:riseIn .6s ease both}
@keyframes riseIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;font-size:13px;color:var(--muted);letter-spacing:.03em}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;letter-spacing:.04em;
  padding:5px 12px;border-radius:var(--r-pill);border:1px solid transparent}
.badge-mint{background:var(--mint-soft);color:var(--mint)}
.badge-line{border-color:var(--line);color:var(--muted)}
.badge-lava{background:var(--lava-soft);color:var(--lava)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.24);display:inline-block}

/* ============ 正文阅读区 ============ */
.article-section{background:var(--paper);padding:72px 0 96px}
.reader{max-width:760px;margin:0 auto}
.article-cover{border-radius:var(--r-img);overflow:hidden;margin-bottom:40px;box-shadow:var(--sh-light);background:var(--card)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{font-size:13px;color:var(--paper-muted);text-align:center;padding:12px 16px;background:#fff}
.article-body{font-size:17px;line-height:1.9;color:var(--paper-text);min-height:220px}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.4em}
.article-body h2{font-size:clamp(24px,2.6vw,31px);font-weight:800;line-height:1.32;letter-spacing:-.01em;
  margin:44px 0 18px;padding-left:14px;border-left:4px solid var(--lava)}
.article-body h3{font-size:21px;font-weight:700;line-height:1.4;margin:30px 0 12px}
.article-body h4{font-size:18px;font-weight:700;margin:24px 0 10px}
.article-body a{color:var(--lava-deep);text-decoration:underline;text-underline-offset:3px}
.article-body strong{font-weight:700}
.article-body ul{margin:0 0 1.4em}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:9px}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.75em;width:7px;height:7px;border-radius:2px;background:var(--lava)}
.article-body ol{counter-reset:num;margin:0 0 1.4em}
.article-body ol li{position:relative;padding-left:34px;margin-bottom:9px;counter-increment:num}
.article-body ol li::before{content:counter(num);position:absolute;left:0;top:.35em;width:22px;height:22px;border-radius:7px;
  background:var(--lava-soft);color:var(--lava);font-size:12px;font-weight:800;display:grid;place-items:center}
.article-body blockquote{margin:26px 0;padding:18px 24px;background:#fff;border-left:4px solid var(--lava);
  border-radius:0 14px 14px 0;color:var(--paper-muted);font-size:16px}
.article-body img{border-radius:var(--r-img);margin:26px 0}
.article-body figure{margin:26px 0}
.article-body figure img{margin:0}
.article-body figcaption{font-size:13px;color:var(--paper-muted);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;background:#fff;
  border-radius:14px;overflow:hidden;box-shadow:var(--sh-light)}
.article-body th{background:var(--lava-soft);text-align:left;font-weight:700;color:var(--paper-text)}
.article-body th,.article-body td{padding:15px 18px;border:0;border-bottom:1px solid var(--paper-line)}
.article-body tbody tr:nth-child(even){background:rgba(20,22,28,.03)}
.article-body hr{border:0;border-top:1px solid var(--paper-line);margin:36px 0}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:48px 0 0;padding-top:28px;border-top:1px solid var(--paper-line)}
.tag-row span.label{font-size:13px;color:var(--paper-muted);letter-spacing:.04em}
.tag{display:inline-flex;align-items:center;font-size:13px;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--paper-line);color:var(--paper-muted);background:#fff;transition:all .18s ease}
.tag:hover{border-color:var(--lava);color:var(--lava)}
.empty-state{min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:#fff;border:1px solid var(--paper-line);border-radius:var(--r-card);box-shadow:var(--sh-light);text-align:center;padding:40px 24px}
.empty-mark{width:52px;height:52px;border-radius:16px;background:var(--lava-soft);color:var(--lava);
  display:grid;place-items:center;font-size:24px;font-weight:900;font-family:"Oswald",Impact,system-ui,sans-serif}
.empty-state p{font-size:15px;color:var(--paper-muted)}

/* ============ 翻页与推荐 ============ */
.jump-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:44px}
.jump-card{display:flex;flex-direction:column;gap:8px;padding:24px;background:#fff;border:1px solid var(--paper-line);
  border-radius:var(--r-card);box-shadow:var(--sh-light);transition:transform .18s ease,border-color .18s ease}
.jump-card:hover{transform:translateY(-4px);border-color:var(--lava)}
.jump-card .lab{font-size:12px;letter-spacing:.08em;color:var(--paper-muted)}
.jump-card h3{font-size:18px;font-weight:700;line-height:1.45}
.jump-card .arrow{font-size:14px;color:var(--lava);display:inline-flex;align-items:center;gap:6px}
.jump-card .arrow i{transition:transform .18s ease}
.jump-card:hover .arrow i{transform:translateX(6px)}
.related{padding:80px 0 88px;background:#fff;border-top:1px solid var(--paper-line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px}
.sec-head h2{font-size:clamp(26px,3vw,36px);font-weight:800;letter-spacing:-.01em;line-height:1.2}
.sec-head p{font-size:15px;color:var(--paper-muted);margin-top:10px;max-width:620px}
.related-list{display:grid !important;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;margin:0 !important}
.related-list>.cell{width:auto;margin:0;padding:0}
.info-card{display:flex;flex-direction:column;height:100%;background:var(--paper);border:1px solid var(--paper-line);
  border-radius:var(--r-card);overflow:hidden;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.info-card:hover{transform:translateY(-4px);border-color:var(--lava);box-shadow:var(--sh-light)}
.info-thumb{background:var(--card);overflow:hidden}
.info-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .28s ease}
.info-card:hover .info-thumb img{transform:scale(1.03)}
.info-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.info-body h3{font-size:19px;font-weight:700;line-height:1.45}
.info-body p{font-size:14px;color:var(--paper-muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.info-body .meta{font-size:13px;color:var(--paper-muted);letter-spacing:.03em;margin-top:auto}
.back-bar{margin-top:44px;display:flex;justify-content:center}

/* ============ CTA ============ */
.cta-band{background:var(--ink);color:var(--text);padding:84px 0;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;opacity:.14}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.cta-inner h2{font-size:clamp(28px,3.4vw,42px);font-weight:900;letter-spacing:-.02em;line-height:1.2;margin-bottom:18px}
.cta-inner p{color:var(--muted);font-size:16px;max-width:520px}
.sub-form{display:flex;gap:10px;align-items:center;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:10px;transition:border-color .18s ease,box-shadow .18s ease}
.sub-form:focus-within{border-color:var(--lava);box-shadow:0 0 0 4px rgba(255,92,41,.16)}
.sub-form input{flex:1;min-width:0;background:transparent;border:0;color:var(--text);padding:0 16px;font-size:15px;outline:none}
.sub-form input::placeholder{color:var(--muted)}
.form-note{font-size:12px;color:var(--muted);margin-top:12px;letter-spacing:.02em}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:var(--muted);padding:76px 0 32px;border-top:1px solid var(--line)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px}
.foot-brand p{font-size:14px;line-height:1.85;margin-top:16px;max-width:340px}
.foot-col h3{font-size:15px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.foot-col ul li{margin-bottom:10px;font-size:14px}
.foot-col a{color:var(--muted)}
.foot-col a:hover{color:var(--lava)}
.foot-bottom{margin-top:56px;padding-top:22px;border-top:1px solid var(--line);display:flex;
  flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;letter-spacing:.02em}

/* ============ 动效 ============ */
.fade-up{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.fade-up.is-in{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .fade-up{opacity:1;transform:none}
}

/* ============ 断点 ============ */
@media (max-width:1023px){
  .dock-nav,.dock-search{display:none}
  .dock-burger{display:inline-flex}
  .dock{justify-content:space-between}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .related-list{grid-template-columns:repeat(2,minmax(0,1fr)) !important}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-hero{padding:132px 0 60px}
}
@media (max-width:767px){
  .shell{padding:0 18px}
  .article-section{padding:48px 0 72px}
  .related{padding:56px 0 64px}
  .cta-band{padding:64px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .related-list{grid-template-columns:1fr !important;gap:20px}
  .jump-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .logo-extra{display:none}
  .article-body{font-size:16px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .sub-form{flex-direction:column;border-radius:22px;padding:12px}
  .sub-form input{width:100%;padding:10px 12px}
  .sub-form .btn{width:100%}
}

/* roulang page: category1 */
/* ============ 1. 设计变量 ============ */
:root{
  --brand:#FF5C29;
  --brand-soft:rgba(255,92,41,.12);
  --brand-line:rgba(255,92,41,.30);
  --mint:#1FE0B8;
  --mint-soft:rgba(31,224,184,.14);
  --ink:#0B0C10;
  --ink-2:#15171E;
  --card:#1B1E26;
  --stroke:rgba(255,255,255,.08);
  --txt:#F4F5F7;
  --txt-dim:#9AA3B2;
  --paper:#F7F5F1;
  --paper-2:#FFFFFF;
  --paper-txt:#14161B;
  --paper-dim:#5C6270;
  --paper-line:#E4E0D9;
  --r-pill:999px;
  --r-card:18px;
  --r-img:16px;
  --r-input:12px;
  --shell:1280px;
  --sec:96px;
  --shadow-dark:0 24px 60px rgba(0,0,0,.45);
  --shadow-paper:0 10px 30px rgba(20,22,28,.08);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"Oswald","Impact","Arial Narrow",system-ui,sans-serif;
}

/* ============ 2. 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--txt);
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,li,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}
::selection{background:var(--brand);color:#fff;}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 12px 0;
}
.skip-link:focus{left:0;}

/* ============ 3. 容器 ============ */
.shell{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .shell{max-width:1400px;}
}

/* ============ 4. 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:var(--r-pill);
  font-size:16px;font-weight:700;line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--brand);color:#fff;
  box-shadow:0 12px 28px rgba(255,92,41,.28);
}
.btn-primary:hover{background:#ff7245;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);background:#e94f1f;}
.btn-ghost{
  background:transparent;color:var(--txt);border-color:rgba(255,255,255,.22);
}
.btn-ghost:hover{border-color:var(--brand);color:#fff;transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:15px;}
.btn-block{width:100%;}
.btn-dark-ghost{
  background:transparent;color:var(--paper-txt);border-color:var(--paper-line);
}
.btn-dark-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:700;font-size:15px;
}
.link-arrow span{display:inline-block;transition:transform .18s ease;}
.link-arrow:hover span{transform:translateX(6px);}

/* ============ 5. 顶部浮动 Dock 导航 ============ */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:120;
  display:flex;justify-content:center;
  pointer-events:none;
}
.dock{
  position:relative;
  pointer-events:auto;
  width:calc(100% - 32px);
  max-width:1080px;
  display:flex;align-items:center;gap:18px;
  padding:10px 14px 10px 16px;
  border-radius:var(--r-pill);
  background:rgba(11,12,16,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  box-shadow:0 18px 40px rgba(0,0,0,.35);
  transition:padding .25s ease,box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled .dock{
  padding:6px 14px 6px 16px;
  box-shadow:0 26px 52px rgba(0,0,0,.55);
  background:rgba(11,12,16,.86);
}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:800;font-size:16px;letter-spacing:.01em;color:var(--txt);
  flex:0 0 auto;
}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:linear-gradient(150deg,#FF7A45,#FF5C29 60%,#E94F1F);
  color:#fff;font-family:var(--font-num);font-size:20px;font-weight:800;
  line-height:1;padding-bottom:2px;
  box-shadow:0 8px 18px rgba(255,92,41,.35);
}
.logo-text em{
  font-style:normal;font-weight:600;font-size:12.5px;color:var(--txt-dim);
  margin-left:4px;letter-spacing:.04em;
}
.dock-nav{
  flex:1 1 auto;
  display:flex;align-items:center;justify-content:center;gap:4px;
}
.dock-nav a{
  padding:9px 16px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--txt-dim);
  transition:background-color .2s ease,color .2s ease;
}
.dock-nav a:hover{color:var(--txt);background:rgba(255,255,255,.06);}
.dock-nav a.is-active{
  color:var(--brand);
  background:var(--brand-soft);
}
.dock-actions{
  display:flex;align-items:center;gap:10px;flex:0 0 auto;
}
.icon-btn{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:transparent;border:1px solid rgba(255,255,255,.14);
  color:var(--txt-dim);cursor:pointer;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.icon-btn:hover{color:var(--txt);border-color:rgba(255,255,255,.32);background:rgba(255,255,255,.06);}
.icon-btn svg{width:17px;height:17px;fill:currentColor;}
.dock-search{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  display:none;gap:10px;align-items:center;
  padding:10px;
  border-radius:18px;
  background:rgba(11,12,16,.94);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  box-shadow:var(--shadow-dark);
}
.dock.is-searching .dock-search{display:flex;}
.dock-search input{
  flex:1 1 auto;height:44px;
  padding:0 16px;
  border-radius:var(--r-input);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
  color:var(--txt);font-size:15px;
  transition:border-color .18s ease,background-color .18s ease;
}
.dock-search input::placeholder{color:#727C8B;}
.dock-search input:focus{
  outline:none;border-color:var(--brand);background:rgba(255,255,255,.08);
  box-shadow:0 0 0 2px rgba(255,92,41,.25);
}
.menu-toggle{
  display:none;
  width:40px;height:40px;border-radius:12px;
  background:transparent;border:1px solid rgba(255,255,255,.14);
  cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.menu-toggle span{
  display:block;width:16px;height:2px;border-radius:2px;background:var(--txt);
  transition:transform .22s ease,opacity .22s ease;
}
.menu-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.menu-toggle.is-open span:nth-child(2){opacity:0;}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.mobile-drawer{
  position:fixed;inset:0;z-index:110;
  display:flex;flex-direction:column;justify-content:center;gap:10px;
  padding:96px 28px 40px;
  background:rgba(11,12,16,.97);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
  pointer-events:none;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:none;pointer-events:auto;}
.mobile-drawer nav{display:flex;flex-direction:column;gap:6px;}
.mobile-drawer nav a{
  padding:16px 18px;border-radius:14px;
  font-size:19px;font-weight:700;color:var(--txt);
  border:1px solid var(--stroke);
  background:rgba(255,255,255,.03);
  opacity:0;transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,background-color .2s ease;
}
.mobile-drawer.is-open nav a{opacity:1;transform:none;}
.mobile-drawer.is-open nav a:nth-child(1){transition-delay:.05s;}
.mobile-drawer.is-open nav a:nth-child(2){transition-delay:.10s;}
.mobile-drawer.is-open nav a:nth-child(3){transition-delay:.15s;}
.mobile-drawer nav a.is-active{color:var(--brand);border-color:var(--brand-line);background:var(--brand-soft);}
.mobile-drawer .btn{margin-top:12px;}
body.nav-open{overflow:hidden;}

/* ============ 6. 分类页头 ============ */
.page-hero{
  position:relative;
  display:flex;align-items:flex-end;
  min-height:46vh;
  padding:150px 0 60px;
  overflow:hidden;
  background:var(--ink);
}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  opacity:.30;
  transform:scale(1.02);
}
.page-hero .hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,12,16,.78) 0%,rgba(11,12,16,.90) 58%,var(--ink) 100%);
}
.page-hero .shell{position:relative;z-index:2;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--txt-dim);letter-spacing:.02em;
  margin-bottom:22px;
}
.crumb a{color:var(--txt-dim);}
.crumb a:hover{color:var(--brand);}
.crumb em{font-style:normal;color:var(--txt);}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;font-weight:700;
  color:var(--mint);
  background:var(--mint-soft);
  padding:7px 14px;border-radius:var(--r-pill);
  margin-bottom:20px;
}
.page-hero h1{
  font-size:clamp(34px,5vw,62px);
  font-weight:900;
  line-height:1.08;
  letter-spacing:-.02em;
  max-width:16em;
}
.hero-lead{
  margin-top:20px;
  max-width:46em;
  font-size:17px;line-height:1.8;
  color:#C7CDD6;
}
.hero-tags{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;
}
.tag{
  display:inline-flex;align-items:center;
  padding:7px 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;letter-spacing:.03em;
  border:1px solid rgba(255,255,255,.16);
  color:var(--txt-dim);
  background:rgba(255,255,255,.03);
}
.tag.tag-mint{color:var(--mint);border-color:rgba(31,224,184,.30);background:var(--mint-soft);}

/* ============ 7. 板块通用 ============ */
.section{padding:var(--sec) 0;}
.section-paper{background:var(--paper);color:var(--paper-txt);}
.section-dark{background:var(--ink);color:var(--txt);}
.section-head{margin-bottom:44px;}
.section-head h2{
  font-size:clamp(26px,3.4vw,42px);
  font-weight:800;line-height:1.15;letter-spacing:-.01em;
}
.section-head p{
  margin-top:14px;max-width:52em;
  font-size:17px;line-height:1.8;color:var(--paper-dim);
}
.section-dark .section-head p{color:var(--txt-dim);}

/* ============ 8. 文档区：锚点目录 + 长文分节 ============ */
.doc-layout{
  display:grid;
  grid-template-columns:250px minmax(0,1fr);
  gap:64px;
  align-items:start;
}
.doc-toc{position:sticky;top:104px;}
.toc-title{
  font-size:12.5px;font-weight:800;letter-spacing:.16em;
  color:var(--paper-dim);text-transform:uppercase;
  margin-bottom:16px;
}
.doc-toc nav{display:flex;flex-direction:column;border-left:1px solid var(--paper-line);}
.doc-toc nav a{
  position:relative;
  padding:9px 0 9px 18px;
  font-size:15px;font-weight:600;color:var(--paper-dim);
  transition:color .18s ease,padding-left .18s ease;
}
.doc-toc nav a::before{
  content:"";position:absolute;left:-1px;top:50%;transform:translateY(-50%) scaleY(0);
  width:2px;height:22px;background:var(--brand);border-radius:2px;
  transition:transform .2s ease;
}
.doc-toc nav a:hover{color:var(--paper-txt);}
.doc-toc nav a.is-current{color:var(--brand);padding-left:22px;}
.doc-toc nav a.is-current::before{transform:translateY(-50%) scaleY(1);}
.toc-card{
  margin-top:32px;
  padding:22px;
  border-radius:var(--r-card);
  background:var(--paper-2);
  border:1px solid var(--paper-line);
  box-shadow:var(--shadow-paper);
}
.toc-card-title{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--paper-dim);}
.toc-card-num{
  font-family:var(--font-num);font-size:34px;font-weight:800;line-height:1.2;
  color:var(--paper-txt);letter-spacing:.01em;margin-top:6px;
}
.toc-card-meta{font-size:13px;color:var(--paper-dim);margin:6px 0 18px;}

.doc-body{min-width:0;}
.doc-block{margin-bottom:72px;scroll-margin-top:120px;}
.doc-block:last-of-type{margin-bottom:0;}
.doc-block h2{
  position:relative;
  padding-left:16px;
  font-size:clamp(22px,2.4vw,30px);
  font-weight:800;line-height:1.3;letter-spacing:-.01em;
  margin-bottom:22px;
}
.doc-block h2::before{
  content:"";position:absolute;left:0;top:.18em;
  width:4px;height:1.05em;border-radius:2px;background:var(--brand);
}
.doc-block p{
  font-size:16.5px;line-height:1.9;color:#2C3038;
  margin-bottom:20px;max-width:46em;
}
.point-list{margin:24px 0 0;display:flex;flex-direction:column;gap:14px;max-width:46em;}
.point-list li{
  position:relative;
  padding-left:26px;
  font-size:16px;line-height:1.8;color:#3A3F49;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:.62em;
  width:9px;height:9px;border-radius:3px;
  background:var(--mint);
}
.point-list strong{color:var(--paper-txt);font-weight:700;}

.dash-note{
  margin:28px 0 0;
  padding:18px 22px;
  border-left:4px solid var(--brand);
  border-radius:0 12px 12px 0;
  background:rgba(255,92,41,.06);
  font-size:15.5px;line-height:1.8;color:#3A3F49;
  max-width:46em;
}

.table-wrap{
  margin:32px 0 0;
  overflow-x:auto;
  border-radius:var(--r-card);
  border:1px solid var(--paper-line);
  background:var(--paper-2);
  box-shadow:var(--shadow-paper);
}
.spec-table{width:100%;border-collapse:collapse;min-width:560px;}
.spec-table caption{
  caption-side:top;text-align:left;
  padding:18px 22px 14px;
  font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--paper-dim);
}
.spec-table th{
  text-align:left;
  padding:0 22px;
  height:52px;
  font-size:13.5px;font-weight:800;letter-spacing:.04em;
  color:var(--brand);
  background:rgba(255,92,41,.08);
  border-bottom:1px solid var(--paper-line);
}
.spec-table td{
  padding:0 22px;
  height:56px;
  font-size:15.5px;color:#2C3038;
  border-bottom:1px solid var(--paper-line);
  vertical-align:middle;
}
.spec-table tbody tr:nth-child(even){background:#FBFAF7;}
.spec-table tbody tr:last-child td{border-bottom:0;}
.spec-table tbody tr:hover{background:rgba(255,92,41,.05);}
.spec-table td:first-child{font-weight:700;color:var(--paper-txt);}

.inline-figure{margin:36px 0 0;max-width:46em;}
.inline-figure .fig-box{
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--ink-2);
  border:1px solid var(--paper-line);
  box-shadow:var(--shadow-paper);
}
.inline-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
}
.inline-figure figcaption{
  margin-top:12px;
  font-size:13px;text-align:center;color:var(--paper-dim);
}

/* ============ 9. 关键数据条 ============ */
.stats-row{
  display:flex;flex-wrap:wrap;gap:20px;
  margin:0;
}
.stats-row .cell{
  width:calc(25% - 15px);
  padding:0;
  min-width:0;
}
.stat-cell{
  padding:26px 22px;
  border-radius:var(--r-card);
  background:var(--paper-2);
  border:1px solid var(--paper-line);
  box-shadow:var(--shadow-paper);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.stat-cell:hover{transform:translateY(-4px);border-color:var(--brand-line);}
.stat-num{
  font-family:var(--font-num);
  font-size:36px;font-weight:800;line-height:1.1;
  color:var(--mint);letter-spacing:.01em;
}
.stat-label{
  margin-top:8px;font-size:14px;font-weight:700;color:var(--paper-txt);
}
.stat-desc{margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--paper-dim);}

/* ============ 10. FAQ ============ */
.faq-wrap{max-width:900px;}
.faq-item{
  border-bottom:1px solid var(--paper-line);
  padding:6px 0;
}
.faq-item:first-child{border-top:1px solid var(--paper-line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;
  font-size:18.5px;font-weight:700;color:var(--paper-txt);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary .faq-icon{
  position:relative;flex:0 0 18px;width:18px;height:18px;
}
.faq-item summary .faq-icon::before,
.faq-item summary .faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.faq-item summary .faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-item summary .faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item[open] summary .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-item .faq-body{
  padding:0 4px 24px;
  font-size:16px;line-height:1.85;color:#3A3F49;max-width:44em;
}
.faq-item[open] .faq-body{animation:faqIn .22s ease-out;}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

/* ============ 11. 结尾 CTA ============ */
.cta-band{
  background:var(--ink-2);
  border-top:1px solid var(--stroke);
  padding:80px 0;
}
.cta-inner{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:56px;
  align-items:center;
}
.cta-copy h2{
  font-size:clamp(26px,3.2vw,40px);
  font-weight:800;line-height:1.18;letter-spacing:-.01em;
}
.cta-copy p{
  margin-top:16px;font-size:16.5px;line-height:1.8;color:var(--txt-dim);max-width:34em;
}
.cta-field{display:flex;gap:10px;}
.cta-field input{
  flex:1 1 auto;height:52px;
  padding:0 18px;
  border-radius:var(--r-input);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  color:var(--txt);font-size:15.5px;
  transition:border-color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.cta-field input::placeholder{color:#727C8B;}
.cta-field input:focus{
  outline:none;border-color:var(--brand);background:rgba(255,255,255,.08);
  box-shadow:0 0 0 2px rgba(255,92,41,.25);
}
.cta-field .btn{height:52px;padding:0 28px;}
.form-note{margin-top:12px;font-size:12.5px;line-height:1.7;color:var(--txt-dim);}
.form-note.is-error{color:var(--brand);}

/* ============ 12. 页脚 ============ */
.site-footer{
  background:var(--ink);
  border-top:1px solid var(--stroke);
  padding:72px 0 32px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:44px;
}
.foot-brand .logo{margin-bottom:18px;}
.foot-brand p{font-size:14.5px;line-height:1.85;color:var(--txt-dim);max-width:30em;}
.foot-col h3{
  font-size:13px;font-weight:800;letter-spacing:.12em;
  color:var(--txt);margin-bottom:18px;
}
.foot-col ul{display:flex;flex-direction:column;gap:11px;}
.foot-col li{font-size:14.5px;color:var(--txt-dim);}
.foot-col a{color:var(--txt-dim);}
.foot-col a:hover{color:var(--brand);}
.foot-bottom{
  margin-top:56px;padding-top:22px;
  border-top:1px solid var(--stroke);
  display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
}
.foot-bottom p{font-size:13px;color:#727C8B;}

/* ============ 13. 滚动入场动效 ============ */
html.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease;}
html.js .reveal.is-visible{opacity:1;transform:none;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  html.js .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* ============ 14. 响应式断点 ============ */
@media (max-width:1023px){
  :root{--sec:72px;}
  .dock-nav{display:none;}
  .menu-toggle{display:flex;}
  .dock-search{display:none !important;}
  .doc-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .doc-toc{position:static;top:auto;}
  .doc-toc nav{
    flex-direction:row;flex-wrap:nowrap;
    overflow-x:auto;
    border-left:0;
    border-bottom:1px solid var(--paper-line);
    padding-bottom:4px;
    -webkit-overflow-scrolling:touch;
  }
  .doc-toc nav::-webkit-scrollbar{height:0;}
  .doc-toc nav a{
    flex:0 0 auto;padding:10px 16px 10px 0 !important;
    white-space:nowrap;
  }
  .doc-toc nav a::before{display:none;}
  .toc-card{display:none;}
  .stats-row .cell{width:calc(50% - 10px);}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:32px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .page-hero{padding:132px 0 52px;min-height:auto;}
}

@media (max-width:767px){
  .stats-row .cell{width:100%;}
}

@media (max-width:520px){
  :root{--sec:56px;}
  .shell{padding:0 18px;}
  body{font-size:16px;}
  .dock{gap:10px;padding:8px 10px 8px 12px;}
  .logo-text em{display:none;}
  .dock-actions .btn-sm{display:none;}
  .page-hero h1{font-size:32px;}
  .hero-lead{font-size:16px;}
  .doc-block{margin-bottom:56px;}
  .doc-block p{font-size:16px;}
  .faq-item summary{font-size:17px;padding:18px 2px;}
  .cta-field{flex-direction:column;}
  .cta-field .btn{width:100%;}
  .foot-grid{grid-template-columns:1fr;gap:32px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .spec-table th,.spec-table td{padding:0 16px;}
}

/* roulang page: category2 */
:root{
  --lava:#FF5C29;
  --lava-soft:rgba(255,92,41,.12);
  --lava-line:rgba(255,92,41,.55);
  --mint:#1FE0B8;
  --mint-soft:rgba(31,224,184,.14);
  --mint-ink:#0C7C64;
  --dark:#0B0C10;
  --dark-2:#15171E;
  --card-dark:#1B1E26;
  --line:rgba(255,255,255,.08);
  --t1:#F4F5F7;
  --t2:#9AA3B2;
  --paper:#F7F5F1;
  --surface:#FFFFFF;
  --ink:#14161B;
  --ink-2:#5C6270;
  --hair:#E4E0D9;
  --r-pill:999px;
  --r-card:18px;
  --r-img:16px;
  --r-input:12px;
  --shadow-dark:0 24px 60px rgba(0,0,0,.45);
  --shadow-light:0 10px 30px rgba(20,22,28,.08);
  --shadow-hover:0 18px 40px rgba(20,22,28,.14);
  --num-font:"Impact","Oswald","Arial Narrow",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
input{font:inherit;}
::selection{background:var(--lava);color:#fff;}

/* ---------- 容器 ---------- */
.shell{width:100%;max-width:1280px;margin:0 auto;padding:0 24px;}
@media(min-width:1440px){.shell{max-width:1400px;}}

/* ---------- 浮动 Dock 导航 ---------- */
.dock-wrap{position:fixed;top:16px;left:0;right:0;z-index:80;display:flex;justify-content:center;padding:0 16px;pointer-events:none;}
.dock{
  pointer-events:auto;
  width:100%;max-width:1080px;
  display:flex;align-items:center;gap:16px;
  padding:10px 14px 10px 18px;
  border-radius:var(--r-pill);
  background:rgba(11,12,16,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:0 12px 30px rgba(0,0,0,.35);
  transition:padding .25s ease,box-shadow .25s ease;
}
.dock.is-scrolled{padding-top:6px;padding-bottom:6px;box-shadow:0 18px 44px rgba(0,0,0,.52);}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--t1);font-weight:800;font-size:17px;letter-spacing:.01em;white-space:nowrap;}
.logo:hover{color:#fff;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;background:var(--lava);color:#fff;
  display:grid;place-items:center;font-family:var(--num-font);font-size:17px;line-height:1;font-weight:700;
}
.dock-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.dock-nav a{
  padding:9px 16px;border-radius:var(--r-pill);color:var(--t2);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:color .18s ease,background .18s ease;
}
.dock-nav a:hover{color:var(--t1);background:rgba(255,255,255,.07);}
.dock-nav a:focus-visible{outline:2px solid var(--lava);outline-offset:2px;}
.dock-nav a.is-active{color:var(--lava);background:var(--lava-soft);}
.dock-cta{
  padding:9px 18px;border-radius:var(--r-pill);background:var(--lava);color:#fff;
  font-size:15px;font-weight:700;white-space:nowrap;
  transition:transform .18s ease,filter .18s ease;
}
.dock-cta:hover{filter:brightness(1.08);transform:translateY(-2px);}
.dock-cta:focus-visible{outline:2px solid #fff;outline-offset:2px;}
.dock-toggle{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);margin-left:auto;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.dock-toggle span{display:block;width:16px;height:2px;background:var(--t1);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.dock.is-open .dock-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.dock.is-open .dock-toggle span:nth-child(2){opacity:0;}
.dock.is-open .dock-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

@media(max-width:900px){
  .dock{gap:10px;}
  .dock-nav{
    display:none;
  }
  .dock-cta{display:none;}
  .dock-toggle{display:flex;}
  .dock.is-open .dock-nav{
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    position:fixed;top:84px;left:16px;right:16px;margin:0;
    padding:14px;border-radius:22px;
    background:rgba(11,12,16,.96);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border:1px solid var(--line);box-shadow:var(--shadow-dark);
  }
  .dock.is-open .dock-nav a{
    padding:14px 16px;font-size:16px;color:var(--t1);
    animation:rise .32s ease-out both;
  }
  .dock.is-open .dock-nav a:nth-child(2){animation-delay:.05s;}
  .dock.is-open .dock-nav a:nth-child(3){animation-delay:.1s;}
  .dock.is-open .dock-nav a.is-active{color:var(--lava);background:var(--lava-soft);}
}
@media(max-width:520px){
  .logo{font-size:15px;}
  .logo-mark{width:26px;height:26px;border-radius:8px;font-size:15px;}
}

@keyframes rise{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}

/* ---------- 内页深色页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;background:var(--dark);color:var(--t1);
  min-height:46vh;display:flex;align-items:flex-end;
  padding:158px 0 72px;
}
.page-hero .bg{position:absolute;inset:0;background-size:cover;background-position:center;background-repeat:no-repeat;}
.page-hero .bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,12,16,.74) 0%,rgba(11,12,16,.88) 52%,#0B0C10 100%);
}
.page-hero .shell{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;letter-spacing:.04em;color:var(--t2);margin-bottom:22px;}
.crumbs a{color:var(--t2);}
.crumbs a:hover{color:var(--lava);}
.crumbs .sep{color:rgba(255,255,255,.28);}
.crumbs em{font-style:normal;color:var(--t1);}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.06);
  color:var(--t2);font-size:13px;letter-spacing:.04em;margin-bottom:20px;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--mint);display:block;}
.page-hero h1{
  font-size:clamp(34px,5vw,64px);font-weight:900;letter-spacing:-.02em;line-height:1.08;
  animation:rise .55s ease-out both;
}
.hero-sub{
  max-width:720px;margin-top:20px;color:var(--t2);font-size:17px;line-height:1.8;
  animation:rise .55s ease-out .08s both;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;animation:rise .55s ease-out .16s both;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;animation:rise .55s ease-out .24s both;}
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:7px 15px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.05);
  color:var(--t2);font-size:13px;letter-spacing:.03em;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,filter .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn--primary{background:var(--lava);color:#fff;}
.btn--primary:hover{filter:brightness(1.08);transform:translateY(-2px);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.24);color:var(--t1);}
.btn--ghost:hover{border-color:var(--lava);color:var(--lava);transform:translateY(-2px);}
.btn--line{background:transparent;border-color:var(--hair);color:var(--ink);}
.btn--line:hover{border-color:var(--lava);color:var(--lava);transform:translateY(-2px);}
.btn:focus-visible{outline:2px solid var(--lava);outline-offset:3px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--lava);font-weight:700;font-size:15px;}
.link-arrow::after{content:"→";transition:transform .18s ease;}
.link-arrow:hover::after{transform:translateX(6px);}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;scroll-margin-top:110px;}
.section--paper{background:var(--paper);}
.section--white{background:#FCFBF9;}
.section--dark{background:var(--dark);color:var(--t1);}
.section-head{max-width:780px;margin-bottom:48px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.18em;
  color:var(--lava);margin-bottom:16px;
}
.section-head h2{font-size:clamp(26px,3.4vw,42px);font-weight:800;letter-spacing:-.01em;}
.section-head p{margin-top:16px;color:var(--ink-2);font-size:16.5px;line-height:1.8;}
.section--dark .section-head p{color:var(--t2);}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap;}
.head-row .section-head{margin-bottom:0;}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media(max-width:1024px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.card-grid{grid-template-columns:1fr;}}
.tile{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--hair);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-light);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.tile:hover{transform:translateY(-4px);border-color:var(--lava-line);box-shadow:var(--shadow-hover);}
.tile:focus-within{border-color:var(--lava-line);}
.tile-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--dark-2);}
.tile-media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out;}
.tile:hover .tile-media img{transform:scale(1.03);}
.tile-body{display:flex;flex-direction:column;gap:10px;padding:22px 22px 24px;flex:1;}
.tile h3{font-size:22px;font-weight:700;}
.tile p{color:var(--ink-2);font-size:15.5px;line-height:1.75;min-height:52px;}
.tile-link{margin-top:auto;padding-top:6px;color:var(--lava);font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:6px;}
.tile-link::after{content:"→";transition:transform .18s ease;}
.tile:hover .tile-link::after{transform:translateX(6px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;letter-spacing:.03em;line-height:1.5;
}
.badge--mint{background:var(--mint-soft);color:var(--mint-ink);}
.badge--line{border:1px solid var(--hair);color:var(--ink-2);}
.badge--dark{border:1px solid var(--line);background:rgba(255,255,255,.06);color:var(--t2);}

/* ---------- 图文对照 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:72px;}
.split:last-child{margin-bottom:0;}
.split--flip .split-media{order:2;}
.split-media{border-radius:var(--r-img);overflow:hidden;background:var(--dark-2);box-shadow:var(--shadow-light);}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.split-body h3{font-size:24px;font-weight:800;margin-bottom:14px;}
.split-body>p{color:var(--ink-2);font-size:16px;line-height:1.85;}
.check-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--ink-2);}
.check-list li::before{
  content:"";flex:0 0 8px;width:8px;height:8px;margin-top:9px;border-radius:50%;
  background:var(--mint);box-shadow:0 0 0 4px var(--mint-soft);
}
@media(max-width:1024px){
  .split{grid-template-columns:1fr;gap:28px;margin-bottom:56px;}
  .split--flip .split-media{order:0;}
}

/* ---------- 数据条 ---------- */
.stat-bar{
  background:var(--dark-2);border:1px solid var(--line);border-radius:22px;
  padding:36px 24px;box-shadow:var(--shadow-dark);
  display:flex;flex-wrap:wrap;
}
.stat-bar .cell{padding:8px 26px;border-left:1px solid var(--line);}
.stat-bar .cell:first-child{border-left:0;padding-left:0;}
.stat-num{font-family:var(--num-font);font-size:46px;line-height:1;color:var(--mint);letter-spacing:.01em;}
.stat-num small{font-size:20px;margin-left:4px;letter-spacing:0;}
.stat-label{margin-top:10px;color:var(--t2);font-size:14px;letter-spacing:.03em;}
@media(max-width:1024px){
  .stat-bar{padding:28px 20px;}
  .stat-bar .cell{padding:12px 20px;}
  .stat-num{font-size:38px;}
}
@media(max-width:640px){
  .stat-bar .cell{flex:0 0 50%;width:50%;border-left:0;padding:14px 0;}
  .stat-bar .cell:nth-child(odd){padding-right:12px;}
  .stat-num{font-size:32px;}
}

/* ---------- FAQ ---------- */
.faq{max-width:880px;margin:0 auto;border-top:1px solid var(--hair);}
.faq-item{border-bottom:1px solid var(--hair);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 0;text-align:left;font-size:19px;font-weight:700;color:var(--ink);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--lava);}
.faq-q:focus-visible{outline:2px solid var(--lava);outline-offset:4px;border-radius:8px;}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--lava);border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a p{padding:0 60px 24px 0;color:var(--ink-2);font-size:16px;line-height:1.85;max-width:740px;}
.faq-item.is-open .faq-a{max-height:320px;}
@media(max-width:640px){
  .faq-q{font-size:17px;padding:20px 0;}
  .faq-a p{padding-right:0;}
}

/* ---------- CTA ---------- */
.cta-band{background:var(--dark);color:var(--t1);padding:88px 0;position:relative;overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;right:-160px;top:-160px;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,92,41,.16) 0%,rgba(255,92,41,0) 68%);
}
.cta-grid{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;}
.cta-copy{padding-right:56px;}
.cta-copy h2{font-size:clamp(28px,3.6vw,46px);font-weight:900;letter-spacing:-.02em;line-height:1.14;}
.cta-copy p{margin-top:16px;color:var(--t2);font-size:16.5px;line-height:1.8;max-width:520px;}
.sub-form{display:flex;gap:12px;}
.sub-form input{
  flex:1;min-width:0;padding:15px 18px;border-radius:var(--r-input);
  border:1px solid var(--line);background:rgba(255,255,255,.06);color:var(--t1);
  transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
}
.sub-form input::placeholder{color:#79808F;}
.sub-form input:focus{
  outline:none;border-color:var(--lava);background:rgba(255,255,255,.1);
  box-shadow:0 0 0 2px rgba(255,92,41,.35);
}
.form-note{margin-top:14px;font-size:12.5px;color:#79808F;letter-spacing:.02em;}
@media(max-width:1024px){
  .cta-band{padding:64px 0;}
  .cta-copy{padding-right:0;margin-bottom:32px;}
}
@media(max-width:640px){
  .sub-form{flex-direction:column;}
  .sub-form .btn{width:100%;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--t2);padding:72px 0 32px;border-top:1px solid var(--line);}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px;}
.foot-brand .logo{margin-bottom:18px;font-size:18px;}
.foot-brand p{font-size:14.5px;line-height:1.85;max-width:340px;}
.foot-col h3{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--t1);margin-bottom:18px;}
.foot-col ul{display:flex;flex-direction:column;gap:12px;}
.foot-col li{font-size:14.5px;line-height:1.7;}
.foot-col a:hover{color:var(--lava);}
.foot-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:#79808F;letter-spacing:.02em;
}
@media(max-width:1024px){.foot-grid{grid-template-columns:1fr 1fr;gap:36px;}}
@media(max-width:640px){.foot-grid{grid-template-columns:1fr;gap:32px;}.site-footer{padding:56px 0 28px;}}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease-out,transform .55s ease-out;}
.reveal.is-in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}
@media(max-width:1024px){
  .section{padding:72px 0;}
  .page-hero{padding:140px 0 60px;}
}
@media(max-width:640px){
  body{font-size:16px;}
  .shell{padding:0 18px;}
  .section{padding:56px 0;}
  .page-hero{padding:126px 0 48px;min-height:auto;}
  .hero-actions .btn{width:100%;}
}