/* roulang page: index */
:root{
  --ink-900:#0b0818;
  --ink-800:#150f2e;
  --ink-700:#221a45;
  --cyan:#3fe0c8;
  --cyan-deep:#1fae9c;
  --amber:#ffc85c;
  --paper:#f6f4ef;
  --paper-line:#e7e3da;
  --t-main:rgba(255,255,255,.92);
  --t-sub:rgba(255,255,255,.66);
  --t-weak:rgba(255,255,255,.42);
  --line-dark:rgba(255,255,255,.12);
  --line-dark-hover:rgba(63,224,200,.45);
  --txt-ink:#1c1442;
  --txt-ink-sub:#55506b;
  --error:#ff6b6b;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --r-input:12px;
  --glow:0 8px 30px rgba(63,224,200,.18);
  --deep:0 20px 60px rgba(0,0,0,.45);
  --paper-shadow:0 4px 18px rgba(28,20,66,.08);
  --maxw:1200px;
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t-main);
  background-color:var(--ink-800);
  background-image:
    radial-gradient(900px 620px at 10% -6%, rgba(63,224,200,.10), transparent 60%),
    radial-gradient(820px 620px at 94% 6%, rgba(118,72,220,.18), transparent 62%),
    radial-gradient(rgba(255,255,255,.055) 1px, transparent 1px);
  background-size:auto,auto,24px 24px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.3;font-weight:700}
em{font-style:normal}
::selection{background:rgba(63,224,200,.32);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:767px){.container{padding:0 16px}}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.2px;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn-primary{background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));color:#06231f;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(63,224,200,.34)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.24);color:var(--t-main)}
.btn-ghost:hover{border-color:var(--line-dark-hover);background:rgba(63,224,200,.08);transform:translateY(-2px)}
.btn-ink{background:var(--ink-700);color:#fff;box-shadow:0 6px 18px rgba(34,26,69,.28)}
.btn-ink:hover{transform:translateY(-2px);background:#2b2055;box-shadow:0 12px 28px rgba(34,26,69,.34)}
.btn-block{width:100%}
.btn:active{transform:translateY(0)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn.is-loading{opacity:.7;pointer-events:none}

.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--cyan);transition:color var(--ease)}
.link-more::after{content:"→";transition:transform var(--ease)}
.link-more:hover{text-decoration:underline}
.link-more:hover::after{transform:translateX(3px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.4px;
  background:rgba(255,255,255,.08);border:1px solid var(--line-dark);color:var(--t-sub);
}
.badge-amber{color:var(--amber);border-color:rgba(255,200,92,.35);background:rgba(255,200,92,.08)}
.badge-cyan{color:var(--cyan);border-color:rgba(63,224,200,.35);background:rgba(63,224,200,.08)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.tag{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  font-size:13.5px;color:var(--t-sub);background:rgba(255,255,255,.05);
  border:1px solid var(--line-dark);transition:var(--ease);
}
.tag:hover{color:var(--cyan);border-color:var(--line-dark-hover);background:rgba(63,224,200,.08)}

/* ---------- 板块骨架 ---------- */
.section{padding:88px 0;position:relative}
.section--panel{
  background:linear-gradient(180deg,#1a1338,#171031);
  border-top:1px solid var(--line-dark);
  border-bottom:1px solid var(--line-dark);
}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;flex-wrap:wrap}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;
  font-size:12.5px;font-weight:600;letter-spacing:2px;color:var(--cyan);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);opacity:.7}
.section-title{font-size:clamp(24px,3.2vw,34px);letter-spacing:-.3px}
.section-sub{margin-top:14px;color:var(--t-sub);font-size:15.5px;line-height:1.85}
@media (max-width:767px){
  .section{padding:52px 0}
  .section-head{margin-bottom:30px}
}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(246,244,239,.94);
  backdrop-filter:blur(10px) saturate(140%);
  border-bottom:1px solid var(--paper-line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--paper-shadow)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--txt-ink)}
.brand-mark{width:30px;height:30px;color:var(--ink-700);flex-shrink:0;transition:color var(--ease)}
.brand:hover .brand-mark{color:var(--cyan-deep)}
.brand-text{font-size:17.5px;font-weight:700;letter-spacing:-.2px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:12px;flex:1}
.main-nav a{
  position:relative;padding:9px 14px;border-radius:999px;
  font-size:14.5px;font-weight:500;color:var(--txt-ink-sub);
  transition:color var(--ease),background var(--ease);
}
.main-nav a:hover{color:var(--txt-ink);background:rgba(34,26,69,.06)}
.main-nav a.active{color:var(--txt-ink);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--cyan-deep);
}
.header-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search-box{
  display:flex;align-items:center;gap:8px;width:232px;height:42px;padding:0 16px;
  border-radius:999px;background:#fff;border:1px solid var(--paper-line);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.search-box:focus-within{border-color:var(--cyan-deep);box-shadow:0 0 0 3px rgba(63,224,200,.18)}
.search-box svg{width:16px;height:16px;color:var(--txt-ink-sub);flex-shrink:0}
.search-box input{width:100%;border:0;background:none;outline:none;font-size:14px;color:var(--txt-ink)}
.search-box input::placeholder{color:#9a95ae}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--paper-line);
  background:#fff;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--txt-ink);border-radius:2px;position:relative;transition:var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--txt-ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}
.mobile-drawer{
  display:none;padding:8px 20px 22px;background:#fff;border-top:1px solid var(--paper-line);
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:block;padding:13px 4px;font-size:15px;color:var(--txt-ink-sub);
  border-bottom:1px solid var(--paper-line);
}
.mobile-drawer a.active{color:var(--txt-ink);font-weight:600}
.mobile-drawer .drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:18px}
.mobile-drawer .search-box{width:100%;margin-top:16px}
@media (max-width:1023px){
  .main-nav,.header-right .search-box,.header-right .btn{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{justify-content:space-between}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:88vh;display:flex;align-items:center;
  padding:80px 0 0;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(11,8,24,.72),rgba(21,15,46,.92)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:26px 26px;opacity:.7;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center;width:100%;padding-bottom:64px}
.hero-copy{max-width:660px}
.hero h1{
  margin:20px 0 0;font-size:clamp(30px,5vw,52px);font-weight:700;line-height:1.25;letter-spacing:-.5px;
}
.hero h1 .hl{color:var(--cyan)}
.hero-sub{margin-top:20px;font-size:16.5px;line-height:1.9;color:var(--t-sub);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-panel{
  border-radius:var(--r-lg);padding:28px 26px;
  background:rgba(255,255,255,.09);
  border:1px solid var(--line-dark);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--glow),var(--deep);
}
.hero-panel h2{font-size:18px;letter-spacing:0}
.hero-panel .panel-note{margin-top:6px;font-size:13.5px;color:var(--t-weak)}
.check-list{margin-top:22px;display:grid;gap:14px}
.check-list li{display:flex;align-items:center;gap:12px;font-size:15px;color:var(--t-main)}
.check-list .dot{
  width:22px;height:22px;border-radius:50%;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(63,224,200,.14);border:1px solid rgba(63,224,200,.45);
  color:var(--cyan);font-size:12px;
}
.check-list li span.state{margin-left:auto;font-size:13px;color:var(--t-weak);font-variant-numeric:tabular-nums}
.hero-panel .btn{margin-top:24px}
.hero-stats{
  position:relative;z-index:2;width:100%;display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line-dark);background:rgba(11,8,24,.42);
}
.hero-stats .stat{padding:22px 8px;text-align:center;border-right:1px solid var(--line-dark)}
.hero-stats .stat:last-child{border-right:0}
.stat-num{display:block;font-size:24px;font-weight:700;color:var(--cyan);font-variant-numeric:tabular-nums;letter-spacing:-.5px}
.stat-num em{font-size:14px;margin-left:2px;color:var(--t-sub)}
.stat-label{display:block;margin-top:4px;font-size:13px;color:var(--t-weak)}
@media (max-width:1023px){
  .hero{min-height:auto;padding-top:56px}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding-bottom:44px}
}
@media (max-width:767px){
  .hero{min-height:520px;background-position:70% center}
  .hero-actions .btn{width:100%}
  .hero-stats{grid-template-columns:1fr;border-top:1px solid var(--line-dark)}
  .hero-stats .stat{border-right:0;border-bottom:1px solid var(--line-dark);padding:16px 8px}
  .hero-stats .stat:last-child{border-bottom:0}
}

/* ---------- 三步上手 ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step-card{
  position:relative;padding:32px 28px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.06);border:1px solid var(--line-dark);
  backdrop-filter:blur(14px) saturate(140%);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:var(--line-dark-hover);box-shadow:var(--glow),var(--deep);background:rgba(255,255,255,.09)}
.step-card.is-first{border-color:rgba(63,224,200,.5);background:rgba(63,224,200,.07)}
.step-num{
  font-size:40px;font-weight:700;color:var(--t-weak);font-variant-numeric:tabular-nums;
  line-height:1;letter-spacing:1px;
}
.step-card.is-first .step-num{color:var(--cyan)}
.step-card h3{margin-top:20px;font-size:20px}
.step-card p{margin-top:12px;font-size:15px;color:var(--t-sub)}
.step-card .link-more{margin-top:20px}
@media (max-width:1023px){.steps-grid{grid-template-columns:1fr;gap:16px}}
@media (max-width:767px){
  .steps-grid{position:relative;padding-left:22px}
  .steps-grid::before{content:"";position:absolute;left:5px;top:12px;bottom:12px;width:1px;background:var(--line-dark)}
  .step-card{border-radius:var(--r-md)}
  .step-card::before{
    content:"";position:absolute;left:-21px;top:36px;width:11px;height:11px;border-radius:50%;
    background:var(--ink-800);border:2px solid var(--line-dark);
  }
  .step-card.is-first::before{border-color:var(--cyan);background:var(--cyan)}
}

/* ---------- 能力矩阵 ---------- */
.matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.m-card{
  padding:28px 24px;border-radius:var(--r-md);
  background:rgba(255,255,255,.06);border:1px solid var(--line-dark);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.m-card:hover{transform:translateY(-4px);border-color:var(--line-dark-hover);box-shadow:var(--glow);background:rgba(255,255,255,.09)}
.m-card.wide{grid-column:span 2;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
  background:rgba(63,224,200,.08);border-color:rgba(63,224,200,.32)}
.m-icon{
  width:44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.06);border:1px solid var(--line-dark);color:var(--cyan);
}
.m-card h3{margin-top:18px;font-size:17.5px}
.m-card p{margin-top:10px;font-size:14.5px;color:var(--t-sub)}
.m-card.wide h3{margin-top:0}
.m-card.wide .wide-figure{width:150px;border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line-dark)}
.m-card.wide .wide-figure img{aspect-ratio:4/3;object-fit:cover;width:100%}
@media (max-width:1023px){
  .matrix{grid-template-columns:repeat(2,1fr)}
  .m-card.wide{grid-column:span 2;grid-template-columns:1fr}
  .m-card.wide .wide-figure{width:100%}
}
@media (max-width:767px){.matrix{grid-template-columns:1fr;gap:14px}.m-card.wide{grid-column:span 1}}

/* ---------- 权益预览 ---------- */
.benefit-wrap{display:grid;grid-template-columns:8fr 4fr;gap:24px;align-items:start}
.benefit-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.benefit-card{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-dark);
  background:rgba(255,255,255,.06);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.benefit-card:hover{transform:translateY(-4px);border-color:var(--line-dark-hover);box-shadow:var(--glow),var(--deep)}
.benefit-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.benefit-card .thumb img{width:100%;height:100%;object-fit:cover}
.benefit-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,8,24,0),rgba(11,8,24,.72))}
.benefit-card .thumb .badge{position:absolute;top:14px;left:14px;z-index:2}
.benefit-card .body{padding:24px}
.benefit-card h3{font-size:19px}
.benefit-card ul{margin-top:16px;display:grid;gap:10px}
.benefit-card li{position:relative;padding-left:18px;font-size:14.5px;color:var(--t-sub)}
.benefit-card li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--cyan);opacity:.8}
.benefit-card .link-more{margin-top:20px}
.rank-panel{
  border-radius:var(--r-lg);padding:26px 22px;border:1px solid var(--line-dark);
  background:rgba(255,255,255,.06);backdrop-filter:blur(14px) saturate(140%);
}
.rank-panel h3{font-size:17px}
.rank-panel .rank-note{margin-top:6px;font-size:13px;color:var(--t-weak)}
.rank-list{margin-top:20px;display:grid;gap:16px}
.rank-item{padding-bottom:14px;border-bottom:1px solid var(--line-dark)}
.rank-item:last-child{border-bottom:0;padding-bottom:0}
.rank-top{display:flex;align-items:center;gap:10px;font-size:14.5px}
.rank-index{
  width:22px;height:22px;border-radius:8px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:var(--ink-800);background:var(--t-weak);font-variant-numeric:tabular-nums;
}
.rank-item:first-child .rank-index{background:var(--amber);color:#3d2a00}
.rank-top .pct{margin-left:auto;font-size:13px;color:var(--cyan);font-variant-numeric:tabular-nums}
.rank-bar{margin-top:10px;height:5px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
.rank-bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--cyan),var(--cyan-deep))}
@media (max-width:1023px){
  .benefit-wrap{grid-template-columns:1fr}
  .benefit-cards{grid-template-columns:1fr}
}

/* ---------- 进度轨道 ---------- */
.track-wrap{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:center}
.track{display:flex;position:relative}
.track-node{flex:1;position:relative;padding-top:38px;text-align:center}
.track-node::before{content:"";position:absolute;top:12px;left:0;right:0;height:2px;background:rgba(255,255,255,.12)}
.track-node:first-child::before{left:50%}
.track-node:last-child::before{right:50%}
.track-node .dot{
  position:absolute;top:5px;left:50%;transform:translateX(-50%);
  width:16px;height:16px;border-radius:50%;background:var(--ink-800);
  border:2px solid rgba(255,255,255,.22);z-index:1;
}
.track-node.is-done .dot{background:var(--cyan);border-color:var(--cyan)}
.track-node.is-done::before{background:rgba(63,224,200,.55)}
.track-node.is-current .dot{border-color:var(--cyan);animation:pulse 2.2s infinite}
.track-node.is-current .track-name{color:var(--cyan)}
.track-name{display:block;font-size:15px;font-weight:600}
.track-state{display:block;margin-top:4px;font-size:12.5px;color:var(--t-weak)}
.track-side{
  padding:24px;border-radius:var(--r-md);border:1px solid var(--line-dark);
  background:rgba(255,255,255,.06);backdrop-filter:blur(14px) saturate(140%);
}
.track-side .big{font-size:34px;font-weight:700;color:var(--cyan);font-variant-numeric:tabular-nums;letter-spacing:-.5px}
.track-side p{margin-top:8px;font-size:14px;color:var(--t-sub)}
.track-side .link-more{margin-top:16px}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(63,224,200,.45)}
  70%{box-shadow:0 0 0 12px rgba(63,224,200,0)}
  100%{box-shadow:0 0 0 0 rgba(63,224,200,0)}
}
@media (max-width:1023px){.track-wrap{grid-template-columns:1fr;gap:28px}}
@media (max-width:600px){
  .track-name{font-size:13px}
  .track-state{font-size:11.5px}
}

/* ---------- 最新动态 ---------- */
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.news-col-main{display:grid;gap:16px}
.news-item{
  position:relative;display:grid;grid-template-columns:210px 1fr;gap:22px;
  padding:18px;border-radius:var(--r-md);
  background:rgba(255,255,255,.05);border:1px solid var(--line-dark);
  transition:transform var(--ease),border-color var(--ease),background var(--ease),box-shadow var(--ease);
}
.news-item::before{
  content:"";position:absolute;left:-1px;top:18px;bottom:18px;width:4px;border-radius:4px;
  background:var(--cyan);opacity:0;transition:opacity var(--ease);
}
.news-item:hover{transform:translateY(-4px);border-color:var(--line-dark-hover);background:rgba(255,255,255,.09);box-shadow:var(--glow)}
.news-item:hover::before{opacity:1}
.news-thumb{border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line-dark);background:var(--ink-700)}
.news-thumb img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 300ms ease}
.news-item:hover .news-thumb img{transform:scale(1.04)}
.news-title{font-size:18px;line-height:1.5}
.news-title a{transition:color var(--ease)}
.news-item:hover .news-title a{color:var(--cyan)}
.news-sum{
  margin-top:10px;font-size:14.5px;color:var(--t-sub);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:12px;margin-top:14px;flex-wrap:wrap}
.news-meta time{font-size:13px;color:var(--t-weak);font-variant-numeric:tabular-nums}
.news-meta .link-more{margin-left:auto;font-size:13.5px}
.news-side{
  border-radius:var(--r-md);padding:24px 22px;
  background:rgba(255,255,255,.06);border:1px solid var(--line-dark);
  backdrop-filter:blur(14px) saturate(140%);
}
.news-side h3{font-size:16.5px}
.side-list{margin-top:18px;display:grid;gap:14px}
.side-list a{display:block;padding-bottom:14px;border-bottom:1px solid var(--line-dark);transition:var(--ease)}
.side-list li:last-child a{border-bottom:0;padding-bottom:0}
.side-list a:hover .side-item-title{color:var(--cyan)}
.side-item-title{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:14.5px;line-height:1.6;transition:color var(--ease);
}
.side-list time{display:block;margin-top:8px;font-size:12.5px;color:var(--t-weak);font-variant-numeric:tabular-nums}
.news-empty{
  padding:64px 24px;text-align:center;border-radius:var(--r-md);
  border:1px dashed var(--line-dark);background:rgba(255,255,255,.04);
}
.news-empty .empty-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(63,224,200,.1);border:1px solid rgba(63,224,200,.3);color:var(--cyan);
}
.news-empty p{font-size:15px;color:var(--t-sub)}
.news-empty .btn{margin-top:20px}
@media (max-width:1023px){
  .news-grid{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr}
  .news-thumb img{aspect-ratio:16/7}
}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 24px;align-items:start}
.faq-item{
  border-radius:var(--r-md);border:1px solid var(--line-dark);
  background:rgba(255,255,255,.05);overflow:hidden;
  transition:border-color var(--ease),background var(--ease),box-shadow var(--ease);
}
.faq-item.is-open{border-color:var(--line-dark-hover);background:rgba(255,255,255,.08);box-shadow:var(--glow)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:20px 22px;font-size:16px;font-weight:600;color:var(--t-main);
}
.faq-q .faq-sign{
  margin-left:auto;flex-shrink:0;width:20px;height:20px;position:relative;
}
.faq-q .faq-sign::before,.faq-q .faq-sign::after{
  content:"";position:absolute;background:var(--t-sub);border-radius:2px;transition:var(--ease);
}
.faq-q .faq-sign::before{left:0;top:9px;width:20px;height:2px}
.faq-q .faq-sign::after{top:0;left:9px;width:2px;height:20px}
.faq-item.is-open .faq-sign::after{transform:rotate(90deg);opacity:0}
.faq-item.is-open .faq-sign::before{background:var(--cyan)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms ease}
.faq-a p{
  padding:0 22px 22px;font-size:15px;line-height:1.9;color:var(--t-sub);
  border-left:4px solid var(--cyan);margin-left:0;padding-left:18px;
}
@media (max-width:1023px){
  .faq-grid{grid-template-columns:1fr}
}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background-image:linear-gradient(90deg,rgba(11,8,24,.94),rgba(34,26,69,.86)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-top:1px solid var(--line-dark);
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:64px 0;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px)}
.cta-inner p{margin-top:12px;font-size:15px;color:var(--t-sub);max-width:620px}
.cta-inner .cta-actions{display:flex;gap:14px;flex-wrap:wrap}
@media (max-width:767px){
  .cta-inner{padding:48px 0}
  .cta-inner .cta-actions .btn{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line-dark);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{color:var(--cyan)}
.footer-brand p{font-size:14px;color:var(--t-sub);max-width:320px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.3px}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:var(--t-sub);transition:color var(--ease)}
.footer-col a:hover{color:var(--cyan)}
.footer-contact li{font-size:14px;color:var(--t-sub)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0;border-top:1px solid var(--line-dark);
  font-size:13px;color:var(--t-weak);
}
.footer-bottom a{color:var(--t-weak)}
.footer-bottom a:hover{color:var(--cyan)}
@media (max-width:1023px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}}
@media (max-width:600px){
  .site-footer{padding-top:44px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --ink-900:#0b0818;
  --ink-800:#150f2e;
  --ink-700:#221a45;
  --cyan:#3fe0c8;
  --cyan-deep:#1fae9c;
  --amber:#ffc85c;
  --paper:#f6f4ef;
  --paper-line:#e7e3da;
  --t-1:rgba(255,255,255,.92);
  --t-2:rgba(255,255,255,.66);
  --t-3:rgba(255,255,255,.42);
  --line:rgba(255,255,255,.12);
  --line-hover:rgba(63,224,200,.45);
  --ink-t1:#1c1442;
  --ink-t2:#55506b;
  --err:#ff6b6b;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --r-xs:12px;
  --shadow-glow:0 8px 30px rgba(63,224,200,.18),0 20px 60px rgba(0,0,0,.45);
  --shadow-paper:0 4px 18px rgba(28,20,66,.08);
  --container:1200px;
  --font: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,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(--t-1);
  background:var(--ink-800);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
svg{display:block}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}
::selection{background:rgba(63,224,200,.3);color:#fff}

.page-bg{position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    radial-gradient(700px 460px at 10% 4%,rgba(63,224,200,.10),transparent 70%),
    radial-gradient(760px 520px at 92% 26%,rgba(112,74,214,.14),transparent 72%),
    radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:auto,auto,24px 24px;
  background-position:0 0,0 0,0 0;
  opacity:.85;
}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;position:relative}
@media (min-width:1440px){:root{--container:1280px}}
@media (max-width:767px){.container{padding:0 16px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.94);
  backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--paper-line);
  color:var(--ink-t1);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-paper)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--ink-t1);white-space:nowrap;flex:none}
.brand-mark{width:30px;height:30px;flex:none;color:var(--ink-700);transition:color .2s ease}
.brand:hover .brand-mark{color:var(--cyan-deep)}
.brand-text{letter-spacing:-.3px}
.main-nav{display:flex;align-items:center;gap:2px}
.main-nav a{position:relative;padding:8px 13px;font-size:15px;color:var(--ink-t2);border-radius:999px;transition:color .2s ease,background .2s ease;white-space:nowrap}
.main-nav a:hover{color:var(--ink-t1);background:rgba(28,20,66,.06)}
.main-nav a.active{color:var(--ink-700);font-weight:600;background:rgba(34,26,69,.07)}
.main-nav a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;border-radius:2px;background:var(--cyan-deep)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{display:flex;align-items:center;gap:8px;width:236px;height:40px;padding:0 14px;background:#fff;border:1px solid var(--paper-line);border-radius:999px;transition:border-color .2s ease,box-shadow .2s ease}
.search-box:focus-within{border-color:var(--cyan-deep);box-shadow:0 0 0 3px rgba(63,224,200,.18)}
.search-box svg{width:16px;height:16px;flex:none;color:#9a95ac}
.search-box input{width:100%;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink-t1)}
.search-box input::placeholder{color:#9a95ac}
.nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;border-radius:14px;border:1px solid var(--paper-line);background:#fff;cursor:pointer}
.nav-toggle svg{width:20px;height:20px;color:var(--ink-t1)}
.mobile-drawer{display:none;overflow:hidden;max-height:0;background:var(--paper);transition:max-height .32s ease}
.mobile-drawer.open{max-height:560px;border-top:1px solid var(--paper-line)}
.mobile-drawer .drawer-inner{padding:16px 16px 22px;display:grid;gap:10px}
.mobile-drawer a.drawer-link{padding:12px 14px;border-radius:14px;font-size:15px;color:var(--ink-t2);background:#fff;border:1px solid var(--paper-line)}
.mobile-drawer a.drawer-link.active{color:var(--ink-700);font-weight:600;border-color:rgba(31,174,156,.4)}
.mobile-drawer .search-box{width:100%}
.mobile-drawer .btn{width:100%}
@media (max-width:1023px){
  .main-nav{display:none}
  .search-box{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
  .mobile-drawer{display:block}
  .header-inner{height:64px;gap:12px}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-ink{background:var(--ink-700);color:#fff}
.btn-ink:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(34,26,69,.3)}
.btn-primary{background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));color:#06231f;box-shadow:0 8px 30px rgba(63,224,200,.22)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(63,224,200,.36)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.24);color:var(--t-1)}
.btn-ghost:hover{border-color:var(--cyan);background:rgba(63,224,200,.08);transform:translateY(-2px)}
.btn:active{transform:none}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- read progress ---------- */
.read-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:rgba(28,20,66,.07);overflow:hidden}
.read-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--cyan-deep));transition:width .12s linear}

/* ---------- article hero ---------- */
.article-hero{position:relative;padding:52px 0 44px;background:var(--ink-800);overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,8,24,.76),rgba(21,15,46,.94))}
.article-hero .container{position:relative;z-index:1}
.breadcrumb{font-size:13.5px;color:var(--t-3);margin-bottom:22px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.24)}
.breadcrumb a{color:var(--t-2);transition:color .2s ease}
.breadcrumb a:hover{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .current{color:var(--t-3);max-width:min(58vw,440px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.badge{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;font-size:12.5px;letter-spacing:1px;background:rgba(255,255,255,.08);border:1px solid var(--line);color:var(--t-2)}
.badge-amber{color:var(--amber);border-color:rgba(255,200,92,.3);background:rgba(255,200,92,.08)}
.article-hero h1{
  margin:18px 0 0;font-size:clamp(26px,3.6vw,42px);line-height:1.32;font-weight:700;letter-spacing:-.5px;color:#fff;
  max-width:940px;
}
.hero-sub{margin-top:16px;font-size:15.5px;color:var(--t-2);max-width:760px}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;
  margin-top:26px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--t-3);font-variant-numeric:tabular-nums;
}
.post-meta span{display:inline-flex;align-items:center;gap:7px}
.post-meta svg{width:15px;height:15px;opacity:.7}
.share-group{margin-left:auto;display:flex;align-items:center;gap:8px}
.share-group button{
  height:32px;padding:0 14px;border-radius:999px;font-size:13px;cursor:pointer;
  background:rgba(255,255,255,.07);border:1px solid var(--line);color:var(--t-2);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.share-group button:hover{color:var(--cyan);border-color:var(--line-hover);background:rgba(63,224,200,.08)}
.share-group button.done{color:var(--cyan);border-color:var(--line-hover)}
@media (max-width:767px){
  .article-hero{padding:36px 0 34px}
  .share-group{margin-left:0;width:100%}
}

/* ---------- article layout ---------- */
.article-body{padding:56px 0 8px;position:relative}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:44px;align-items:start}
.article-main{min-width:0;max-width:820px}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 272px;gap:56px}
  .post-aside{position:sticky;top:98px}
}
@media (max-width:767px){
  .article-body{padding:36px 0 0}
}
.post-aside.toc-empty{display:none}

/* ---------- post content ---------- */
.post-content{font-size:16.5px;line-height:1.95;color:rgba(255,255,255,.84);word-wrap:break-word}
.post-content>*:first-child{margin-top:0}
.post-content p{margin:0 0 20px}
.post-content h2{
  position:relative;margin:48px 0 20px;padding-left:16px;
  font-size:clamp(21px,2.4vw,26px);line-height:1.45;font-weight:700;color:#fff;letter-spacing:-.3px;
}
.post-content h2::before{content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:4px;border-radius:2px;background:linear-gradient(180deg,var(--cyan),var(--cyan-deep))}
.post-content h3{margin:36px 0 14px;font-size:20px;line-height:1.5;font-weight:700;color:#fff}
.post-content h4{margin:26px 0 12px;font-size:17px;font-weight:600;color:var(--t-1)}
.post-content ul,.post-content ol{margin:0 0 22px;padding-left:2px}
.post-content li{position:relative;margin-bottom:10px;padding-left:24px}
.post-content ul li::before{content:"";position:absolute;left:3px;top:.74em;width:7px;height:7px;border-radius:2px;background:var(--cyan);opacity:.85;transform:rotate(45deg)}
.post-content ol{counter-reset:listc}
.post-content ol li{counter-increment:listc}
.post-content ol li::before{content:counter(listc);position:absolute;left:0;top:0;width:18px;text-align:right;font-size:13.5px;font-weight:700;color:var(--cyan);font-variant-numeric:tabular-nums}
.post-content blockquote{
  margin:26px 0;padding:16px 24px;border-left:3px solid var(--amber);
  background:rgba(255,255,255,.05);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--t-2);
}
.post-content blockquote p:last-child{margin-bottom:0}
.post-content img{border-radius:var(--r-sm);border:1px solid var(--line);margin:26px auto;height:auto}
.post-content figure{margin:26px 0}
.post-content figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--t-3)}
.post-content a{color:var(--cyan);border-bottom:1px solid rgba(63,224,200,.35);transition:border-color .2s ease,color .2s ease}
.post-content a:hover{border-bottom-color:var(--cyan)}
.post-content table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:26px 0;font-size:15px;border-radius:var(--r-xs);border:1px solid var(--line)}
.post-content table th{background:var(--ink-700);color:#fff;font-weight:600;text-align:left;padding:12px 16px;white-space:nowrap}
.post-content table td{padding:12px 16px;border-top:1px solid var(--line);color:var(--t-2);min-width:120px}
.post-content code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;background:rgba(63,224,200,.1);color:var(--cyan);padding:2px 7px;border-radius:6px}
.post-content pre{background:#0d0a1c;border:1px solid var(--line);border-radius:var(--r-xs);padding:18px 20px;overflow-x:auto;margin:24px 0}
.post-content pre code{background:transparent;color:rgba(255,255,255,.82);padding:0;font-size:13.5px;line-height:1.75}
.post-content hr{margin:40px 0;border:0;border-top:1px solid var(--line)}

.post-empty{
  text-align:center;padding:64px 24px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.post-empty svg{width:44px;height:44px;margin:0 auto 16px;color:var(--t-3)}
.post-empty p{font-size:17px;color:var(--t-2);margin-bottom:22px}

/* ---------- tags ---------- */
.post-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.post-tags .tag-label{font-size:13px;letter-spacing:2px;color:var(--t-3);margin-right:6px}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:999px;font-size:13.5px;
  color:var(--t-2);background:rgba(255,255,255,.06);border:1px solid var(--line);
  transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease;
}
.tag:hover{color:var(--cyan);border-color:var(--line-hover);background:rgba(63,224,200,.08);transform:translateY(-2px)}

/* ---------- prev / next ---------- */
.post-nav{display:grid;gap:16px;margin-top:36px}
@media (min-width:768px){.post-nav{grid-template-columns:1fr 1fr}}
.post-nav a{
  display:block;padding:22px 24px;border-radius:var(--r-md);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.post-nav a:hover{transform:translateY(-4px);border-color:var(--line-hover);background:rgba(255,255,255,.09);box-shadow:var(--shadow-glow)}
.post-nav .label{font-size:12.5px;letter-spacing:2px;color:var(--t-3)}
.post-nav .title{display:block;margin-top:9px;font-size:16px;font-weight:600;color:var(--t-1);line-height:1.6}
.post-nav a:hover .title{color:var(--cyan)}

/* ---------- related ---------- */
.related{margin-top:60px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:22px}
.section-head h2{font-size:clamp(20px,2.4vw,24px);font-weight:700;color:#fff;letter-spacing:-.3px}
.section-head .more{font-size:14px;color:var(--cyan);border-bottom:1px solid transparent;transition:border-color .2s ease}
.section-head .more:hover{border-bottom-color:var(--cyan)}
.related-list{display:grid;gap:14px}
.related-item{
  display:grid;grid-template-columns:128px minmax(0,1fr);gap:18px;padding:16px;
  border-radius:var(--r-md);background:rgba(255,255,255,.05);border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.related-item:hover{transform:translateY(-4px);border-color:var(--line-hover);background:rgba(255,255,255,.09);box-shadow:var(--shadow-glow)}
.related-thumb{aspect-ratio:4/3;border-radius:var(--r-xs);overflow:hidden;background:var(--ink-700);border:1px solid var(--line)}
.related-thumb img{width:100%;height:100%;object-fit:cover}
.related-body h3{font-size:16px;font-weight:600;color:var(--t-1);line-height:1.6;margin-bottom:8px}
.related-item:hover .related-body h3{color:var(--cyan)}
.related-body p{font-size:14px;color:var(--t-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px}
.related-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--t-3);font-variant-numeric:tabular-nums}
.related-meta .badge{height:24px;padding:0 10px;font-size:11.5px;letter-spacing:.5px}
@media (max-width:520px){
  .related-item{grid-template-columns:96px minmax(0,1fr);gap:14px;padding:14px}
}

/* ---------- aside / toc ---------- */
.post-aside{min-width:0}
.toc-card{
  background:rgba(255,255,255,.06);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 18px 14px;backdrop-filter:blur(14px) saturate(140%);
}
.toc-card h3{font-size:13px;letter-spacing:2px;color:var(--t-3);font-weight:600;margin-bottom:14px}
.toc-list{max-height:60vh;overflow:auto}
.toc-list li{margin-bottom:2px}
.toc-list a{
  display:block;padding:7px 10px;border-radius:10px;font-size:14px;color:var(--t-2);
  border-left:2px solid transparent;line-height:1.6;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.toc-list a:hover{color:#fff;background:rgba(255,255,255,.06)}
.toc-list a.active{color:var(--cyan);border-left-color:var(--cyan);background:rgba(63,224,200,.08)}
.aside-card{margin-top:18px;padding:20px 18px;border-radius:var(--r-md);background:rgba(255,255,255,.05);border:1px solid var(--line)}
.aside-card h4{font-size:15px;color:#fff;margin-bottom:10px}
.aside-card p{font-size:13.5px;color:var(--t-2);line-height:1.8;margin-bottom:14px}
.aside-card .btn{width:100%}
@media (max-width:1199px){
  .post-aside{width:100%}
  .toc-list{max-height:none}
}

/* ---------- cta band ---------- */
.cta-band{position:relative;margin-top:72px;padding:64px 0;background:linear-gradient(135deg,rgba(34,26,69,.94),rgba(11,8,24,.98));border-top:1px solid var(--line);overflow:hidden}
.cta-band::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(520px 300px at 82% 40%,rgba(63,224,200,.16),transparent 70%)}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(21px,2.6vw,28px);font-weight:700;color:#fff;letter-spacing:-.3px;margin-bottom:10px}
.cta-inner p{font-size:15px;color:var(--t-2);max-width:640px}
@media (max-width:767px){
  .cta-band{padding:48px 0;margin-top:52px}
  .cta-inner .btn{width:100%}
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line);padding:64px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{color:var(--cyan)}
.footer-brand p{font-size:14px;color:var(--t-3);line-height:1.9;max-width:320px}
.footer-col h4{font-size:14px;letter-spacing:2px;color:var(--t-2);font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--t-3);transition:color .2s ease}
.footer-col a:hover{color:var(--cyan)}
.footer-contact li{font-size:14px;color:var(--t-3);line-height:1.8}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.36);font-variant-numeric:tabular-nums;
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:600px){
  .site-footer{padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --ink-900:#0b0818;
  --ink-800:#150f2e;
  --ink-700:#221a45;
  --cyan:#3fe0c8;
  --cyan-deep:#1fae9c;
  --amber:#ffc85c;
  --paper:#f6f4ef;
  --paper-line:#e7e3da;
  --text-strong:rgba(255,255,255,.92);
  --text-mid:rgba(255,255,255,.66);
  --text-weak:rgba(255,255,255,.42);
  --line-soft:rgba(255,255,255,.12);
  --line-hover:rgba(63,224,200,.45);
  --ink-text:#1c1442;
  --ink-text-mid:#55506b;
  --danger:#ff6b6b;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:14px;
  --radius-xs:12px;
  --shadow-glow:0 8px 30px rgba(63,224,200,.18), 0 20px 60px rgba(0,0,0,.45);
  --shadow-paper:0 4px 18px rgba(28,20,66,.08);
  --font-sans:-apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text-strong);
  background-color:var(--ink-800);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(63,224,200,.10), transparent 42%),
    radial-gradient(circle at 88% 22%, rgba(120,90,220,.14), transparent 46%),
    radial-gradient(rgba(255,255,255,.055) 1px, transparent 1px);
  background-size:auto, auto, 24px 24px;
  background-repeat:no-repeat, no-repeat, repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:1440px){.container{max-width:1280px;}}
@media(max-width:767px){.container{padding:0 16px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,239,.94);
  backdrop-filter:blur(10px) saturate(140%);
  border-bottom:1px solid var(--paper-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(28,20,66,.09);}
.header-inner{display:flex;align-items:center;gap:20px;min-height:74px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-700);font-weight:700;font-size:17px;letter-spacing:-.3px;white-space:nowrap;}
.brand-mark{width:30px;height:30px;color:var(--cyan-deep);flex:0 0 auto;}
.brand-text{line-height:1.2;}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px;}
.main-nav a{
  position:relative;padding:9px 13px;border-radius:999px;
  font-size:15px;color:#4a4460;transition:background .2s ease,color .2s ease;
}
.main-nav a:hover{background:rgba(34,26,69,.07);color:var(--ink-700);}
.main-nav a.active{color:var(--ink-700);font-weight:600;}
.main-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--cyan-deep);border-radius:2px;
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{position:relative;}
.search-box input{
  width:220px;height:40px;border-radius:999px;
  border:1px solid var(--paper-line);background:#fff;
  padding:0 16px;font-size:14px;color:var(--ink-text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box input::placeholder{color:#9d98ad;}
.search-box input:focus{outline:none;border-color:var(--cyan-deep);box-shadow:0 0 0 3px rgba(63,224,200,.18);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.2px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{
  background:linear-gradient(120deg,var(--cyan) 0%,var(--cyan-deep) 100%);
  color:#06231f;box-shadow:0 6px 20px rgba(63,224,200,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(63,224,200,.38);}
.btn-primary:active{transform:none;}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.24);color:var(--text-strong);}
.btn-ghost:hover{border-color:var(--line-hover);background:rgba(63,224,200,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:none;}
.btn-ink{background:var(--ink-700);color:#fff;}
.btn-ink:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(34,26,69,.28);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--paper-line);background:#fff;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-700);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-700);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-drawer{
  display:none;border-top:1px solid var(--paper-line);background:rgba(255,255,255,.98);
  padding:14px 20px 20px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer .search-box input{width:100%;}
.mobile-drawer nav{display:flex;flex-direction:column;gap:2px;margin:12px 0 14px;}
.mobile-drawer nav a{
  padding:12px 14px;border-radius:12px;font-size:15px;color:#4a4460;
}
.mobile-drawer nav a:hover{background:rgba(34,26,69,.06);}
.mobile-drawer nav a.active{color:var(--ink-700);font-weight:600;background:rgba(63,224,200,.14);}
.mobile-drawer .btn{width:100%;}
@media(max-width:1023px){
  .main-nav,.header-actions .search-box,.header-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--text-weak);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li::after{content:"/";color:rgba(255,255,255,.24);}
.breadcrumb li:last-child::after{content:"";}
.breadcrumb a{color:var(--text-mid);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--cyan);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .is-current{color:var(--text-weak);}

/* ============ 页面头图 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:64px 0 72px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(118deg,rgba(11,8,24,.94) 0%,rgba(21,15,46,.86) 52%,rgba(34,26,69,.80) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:24px 24px;
}
.page-hero .container{position:relative;z-index:2;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;margin-bottom:20px;
  border:1px solid rgba(255,200,92,.32);background:rgba(255,200,92,.10);
  color:var(--amber);font-size:13px;letter-spacing:2px;
}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--amber);display:block;}
.page-hero h1{
  font-size:clamp(30px,5vw,46px);
  line-height:1.25;font-weight:700;letter-spacing:-.5px;
  max-width:900px;margin-top:18px;
}
.page-hero h1 em{font-style:normal;color:var(--cyan);}
.hero-lead{
  margin-top:18px;max-width:760px;
  font-size:16px;line-height:1.9;color:var(--text-mid);
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;
}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.07);border:1px solid var(--line-soft);color:var(--text-mid);
}
.chip-amber{color:var(--amber);border-color:rgba(255,200,92,.28);background:rgba(255,200,92,.08);}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section--paper{background:var(--paper);color:var(--ink-text);}
.section--panel{
  background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,0));
  border-top:1px solid rgba(255,255,255,.06);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(24px,3.2vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.4px;
}
.section-head p{margin-top:14px;font-size:15.5px;color:var(--text-mid);line-height:1.9;}
.section--paper .section-head p{color:var(--ink-text-mid);}
.section-no{
  font-variant-numeric:tabular-nums;font-size:13px;letter-spacing:2px;
  color:var(--cyan);display:block;margin-bottom:14px;
}
.section--paper .section-no{color:var(--cyan-deep);}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.glass-card{
  display:flex;flex-direction:column;
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-md);
  overflow:hidden;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.glass-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-hover);
  background:rgba(255,255,255,.09);
  box-shadow:var(--shadow-glow);
}
.glass-card:active{transform:none;}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-700);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.glass-card:hover .card-media img{transform:scale(1.04);}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,8,24,0) 40%,rgba(11,8,24,.72) 100%);
}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:14px;flex:1;}
.card-body h3{font-size:18px;line-height:1.5;font-weight:600;}
.card-body .card-desc{font-size:14.5px;color:var(--text-mid);line-height:1.8;}
.card-points{display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--text-mid);}
.card-points li{position:relative;padding-left:18px;line-height:1.7;}
.card-points li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 8px rgba(63,224,200,.6);
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--cyan);font-weight:600;margin-top:auto;
  transition:gap .2s ease,color .2s ease;
}
.text-link:hover{gap:10px;text-decoration:underline;text-underline-offset:4px;}
.card-badge{
  align-self:flex-start;padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:1px;
  background:rgba(255,255,255,.08);border:1px solid var(--line-soft);color:var(--amber);
}
@media(max-width:1023px){
  .card-grid{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:700px){
  .card-grid{grid-template-columns:1fr;}
  .section{padding:56px 0;}
}

/* ============ 标签组 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px;}
.tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;font-size:14px;
  background:rgba(255,255,255,.06);border:1px solid var(--line-soft);color:var(--text-mid);
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.tag:hover{border-color:var(--line-hover);color:var(--text-strong);background:rgba(63,224,200,.08);transform:translateY(-2px);}
.tag b{font-weight:600;color:var(--text-strong);}

/* ============ 浅色区：场景对照 ============ */
.scene-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.scene-card{
  background:#fff;border:1px solid var(--paper-line);border-radius:var(--radius-md);
  padding:28px;box-shadow:var(--shadow-paper);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:0 12px 34px rgba(28,20,66,.12);border-color:rgba(31,174,156,.4);}
.scene-card h3{font-size:20px;font-weight:700;color:var(--ink-text);}
.scene-card .scene-sub{margin-top:8px;font-size:14px;color:var(--cyan-deep);font-weight:600;letter-spacing:1px;}
.scene-list{margin-top:20px;display:flex;flex-direction:column;gap:14px;}
.scene-list li{display:flex;gap:12px;font-size:15px;line-height:1.8;color:var(--ink-text-mid);}
.scene-list li span{
  flex:0 0 24px;height:24px;border-radius:8px;background:rgba(31,174,156,.14);
  color:var(--cyan-deep);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
@media(max-width:880px){.scene-wrap{grid-template-columns:1fr;}}

/* ============ 设备对照表卡 ============ */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.device-card{
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-soft);border-radius:var(--radius-md);
  padding:26px 24px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.device-card:hover{transform:translateY(-4px);border-color:var(--line-hover);box-shadow:var(--shadow-glow);}
.device-card .device-icon{
  width:44px;height:44px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(63,224,200,.12);border:1px solid rgba(63,224,200,.28);color:var(--cyan);margin-bottom:18px;
}
.device-card h3{font-size:17px;font-weight:600;margin-bottom:12px;}
.device-card dl{display:flex;flex-direction:column;gap:10px;font-size:14px;}
.device-card dt{color:var(--text-weak);font-size:12.5px;letter-spacing:1px;}
.device-card dd{color:var(--text-mid);line-height:1.75;}
@media(max-width:1023px){.device-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:680px){.device-grid{grid-template-columns:1fr;}}

/* ============ 进度轨道 ============ */
.track-panel{
  margin-top:48px;padding:30px 28px;border-radius:var(--radius-lg);
  background:rgba(255,255,255,.05);border:1px solid var(--line-soft);
}
.track-panel h3{font-size:18px;margin-bottom:6px;}
.track-panel p{font-size:14px;color:var(--text-mid);}
.track{display:grid;grid-template-columns:repeat(4,1fr);margin-top:30px;position:relative;}
.track-line{
  position:absolute;top:11px;left:6%;right:6%;height:2px;background:rgba(255,255,255,.14);
}
.track-line i{display:block;height:100%;width:66%;background:linear-gradient(90deg,var(--cyan),var(--cyan-deep));border-radius:2px;}
.track-node{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;}
.node-dot{
  width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:2px solid rgba(255,255,255,.28);background:var(--ink-800);font-size:11px;color:var(--text-weak);
  font-variant-numeric:tabular-nums;
}
.node-dot.done{background:var(--cyan);border-color:var(--cyan);color:#06231f;font-weight:700;}
.node-dot.current{border-color:var(--cyan);color:var(--cyan);box-shadow:0 0 0 6px rgba(63,224,200,.14);animation:pulse 2.4s ease-in-out infinite;}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 6px rgba(63,224,200,.12);}
  50%{box-shadow:0 0 0 12px rgba(63,224,200,.05);}
}
.node-label{font-size:14px;color:var(--text-mid);}
.node-label strong{display:block;color:var(--text-strong);font-size:14.5px;font-weight:600;margin-bottom:2px;}
.track-foot{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
}
.track-percent{font-size:26px;font-weight:700;color:var(--cyan);font-variant-numeric:tabular-nums;letter-spacing:-.5px;}
.track-percent small{font-size:13px;color:var(--text-weak);font-weight:400;margin-left:8px;letter-spacing:0;}
@media(max-width:767px){
  .track{grid-template-columns:1fr;gap:18px;}
  .track-line{display:none;}
  .track-node{flex-direction:row;text-align:left;gap:14px;}
}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.faq-item{
  border:1px solid var(--line-soft);border-radius:var(--radius-sm);
  background:rgba(255,255,255,.05);overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item:hover{border-color:rgba(63,224,200,.3);}
.faq-item[open]{border-color:var(--line-hover);background:rgba(255,255,255,.075);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 22px 20px 24px;
  display:flex;align-items:flex-start;gap:14px;
  font-size:16px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";flex:0 0 4px;align-self:stretch;min-height:22px;border-radius:2px;
  background:rgba(255,255,255,.16);transition:background .2s ease;
}
.faq-item[open] summary::before{background:var(--cyan);}
.faq-item summary .faq-mark{margin-left:auto;flex:0 0 auto;color:var(--text-weak);transition:transform .25s ease;font-size:20px;line-height:1;}
.faq-item[open] summary .faq-mark{transform:rotate(45deg);color:var(--cyan);}
.faq-answer{padding:0 24px 22px 42px;font-size:15px;line-height:1.9;color:var(--text-mid);}
@media(max-width:1023px){.faq-grid{grid-template-columns:1fr;}}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,var(--ink-900) 0%,var(--ink-700) 100%);
  border-top:1px solid rgba(255,255,255,.08);
  padding:64px 0;
}
.cta-band::after{
  content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(63,224,200,.20),transparent 68%);filter:blur(30px);
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700;letter-spacing:-.4px;}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--text-mid);max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
@media(max-width:767px){
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);border-top:1px solid rgba(255,255,255,.08);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{color:#fff;margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-weak);line-height:1.9;max-width:340px;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-strong);margin-bottom:18px;letter-spacing:.5px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--text-weak);transition:color .2s ease;}
.footer-col a:hover{color:var(--cyan);text-decoration:underline;text-underline-offset:3px;}
.footer-contact li{font-size:14px;color:var(--text-weak);line-height:1.7;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-weak);
}
@media(max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media(max-width:600px){.footer-grid{grid-template-columns:1fr;}.footer-bottom{flex-direction:column;gap:8px;}}

@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
}

/* roulang page: category2 */
:root{
  --ink-900:#0b0818;
  --ink-800:#150f2e;
  --ink-700:#221a45;
  --cyan:#3fe0c8;
  --cyan-deep:#1fae9c;
  --amber:#ffc85c;
  --paper:#f6f4ef;
  --paper-line:#e7e3da;
  --t-1:rgba(255,255,255,.92);
  --t-2:rgba(255,255,255,.66);
  --t-3:rgba(255,255,255,.42);
  --line:rgba(255,255,255,.12);
  --line-hover:rgba(63,224,200,.45);
  --err:#ff6b6b;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --r-xs:12px;
  --shadow-glow:0 8px 30px rgba(63,224,200,.18);
  --shadow-deep:0 20px 60px rgba(0,0,0,.45);
  --cont:1200px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",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(--t-1);
  background-color:var(--ink-800);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  pointer-events:none;
  background-image:
    radial-gradient(circle at 10% 12%, rgba(63,224,200,.10), transparent 42%),
    radial-gradient(circle at 88% 6%, rgba(122,86,255,.16), transparent 46%),
    radial-gradient(circle at 52% 96%, rgba(63,224,200,.07), transparent 42%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  opacity:.6;
  background-image:radial-gradient(circle, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size:24px 24px;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--cont);margin:0 auto;padding:0 20px}
@media (min-width:1440px){.container{max-width:1280px}}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,239,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--paper-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(28,20,66,.08)}
.header-inner{display:flex;align-items:center;gap:18px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#1c1442;font-weight:700;font-size:17px;letter-spacing:-.3px;flex-shrink:0}
.brand-mark{width:28px;height:28px;color:var(--cyan-deep);flex:none}
.brand-text{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.main-nav a{
  position:relative;padding:9px 13px;border-radius:999px;
  font-size:14.5px;color:#55506b;
  transition:color .2s ease,background .2s ease;
  white-space:nowrap;
}
.main-nav a:hover{color:#1c1442;background:rgba(28,20,66,.06)}
.main-nav a.active{color:#1c1442;font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:var(--cyan-deep);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{position:relative;width:210px}
.search-box svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:#918ca8;pointer-events:none}
.search-box input{
  width:100%;height:40px;padding:0 14px 0 36px;border-radius:999px;
  border:1px solid var(--paper-line);background:#fff;font-size:14px;color:#1c1442;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box input::placeholder{color:#9d98b0}
.search-box input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(63,224,200,.18)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--paper-line);background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px;color:#1c1442}
.mobile-drawer{display:none;border-top:1px solid var(--paper-line);background:var(--paper);padding:14px 0 22px}
.mobile-drawer.open{display:block}
.mobile-drawer .m-search{margin-bottom:14px}
.mobile-drawer .m-search input{width:100%;height:44px;padding:0 16px;border-radius:12px;border:1px solid var(--paper-line);background:#fff;font-size:14.5px;color:#1c1442}
.mobile-drawer nav{display:grid;gap:6px}
.mobile-drawer nav a{padding:12px 14px;border-radius:12px;font-size:15px;color:#3a3452;background:#fff;border:1px solid var(--paper-line)}
.mobile-drawer nav a.active{color:#0f7f71;border-color:rgba(31,174,156,.45);font-weight:600}
.mobile-drawer .m-cta{margin-top:14px;display:flex}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn:active{transform:none}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-ink{background:var(--ink-700);color:#fff}
.btn-ink:hover{background:#2d2360;transform:translateY(-2px);box-shadow:0 10px 24px rgba(28,20,66,.24)}
.btn-primary{background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));color:#06231f;box-shadow:var(--shadow-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(63,224,200,.34)}
.btn-ghost{background:transparent;color:var(--t-1);border-color:rgba(255,255,255,.24)}
.btn-ghost:hover{border-color:var(--line-hover);background:rgba(63,224,200,.08);transform:translateY(-2px)}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-size:14.5px;font-weight:600;border-bottom:2px solid transparent;transition:border-color .2s ease,color .2s ease}
.text-link:hover{border-color:var(--cyan)}
.text-link svg{width:15px;height:15px}

/* ---------- 通用板块 ---------- */
.section{padding:84px 0}
.section-alt{
  background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.015));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{max-width:740px;margin-bottom:46px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:2px;
  color:var(--cyan);font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);opacity:.7}
.section-head h2{font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.4px}
.section-head p{margin-top:14px;color:var(--t-2);font-size:16px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12.5px;line-height:1.6;background:rgba(255,255,255,.08);
  border:1px solid var(--line);color:var(--t-2);white-space:nowrap;
}
.badge-amber{color:var(--amber);border-color:rgba(255,200,92,.32);background:rgba(255,200,92,.08)}

/* ---------- 栏目 Banner ---------- */
.page-banner{
  position:relative;
  padding:60px 0 66px;
  background-image:linear-gradient(115deg,rgba(11,8,24,.92),rgba(21,15,46,.74)),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle, rgba(255,255,255,.07) 1px, transparent 1px);
  background-size:26px 26px;
  opacity:.6;
}
.page-banner .container{position:relative;z-index:2}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--t-3)}
.breadcrumb a{color:var(--t-2);transition:color .2s ease}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:rgba(255,255,255,.24)}
.breadcrumb [aria-current="page"]{color:var(--t-2);max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.page-banner h1{
  font-size:clamp(28px,4.2vw,46px);
  font-weight:700;line-height:1.25;letter-spacing:-.5px;
  margin:20px 0 16px;max-width:840px;
}
.banner-lead{max-width:680px;color:var(--t-2);font-size:16.5px}
.banner-tags{margin-top:24px;display:flex;flex-wrap:wrap;gap:10px}

/* ---------- 步骤流程 ---------- */
.step-list{display:grid}
.step{display:grid;grid-template-columns:76px 1fr;padding-bottom:38px}
.step:last-child{padding-bottom:0}
.step-rail{position:relative;display:flex;justify-content:center}
.step-rail::before{
  content:"";position:absolute;left:50%;top:54px;bottom:-38px;width:2px;
  transform:translateX(-50%);border-radius:2px;
  background:linear-gradient(180deg,rgba(63,224,200,.5),rgba(255,255,255,.07));
}
.step:last-child .step-rail::before{display:none}
.step-dot{
  position:relative;z-index:1;width:52px;height:52px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;letter-spacing:1px;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));
  color:#06231f;
  box-shadow:0 8px 24px rgba(63,224,200,.28);
}
.step-body{
  display:flex;align-items:center;gap:32px;
  padding:28px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.step-body:hover{transform:translateY(-4px);border-color:var(--line-hover);box-shadow:var(--shadow-glow),var(--shadow-deep)}
.step:nth-child(even) .step-body{flex-direction:row-reverse}
.step-media{flex:0 0 42%;border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line)}
.step-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.step-text{flex:1;min-width:0}
.step-text h3{font-size:20px;font-weight:700;line-height:1.45;margin-bottom:12px}
.step-text p{color:var(--t-2);font-size:15.5px}
.step-points{margin-top:16px;display:grid;gap:10px}
.step-points li{position:relative;padding-left:22px;font-size:14.5px;color:var(--t-2)}
.step-points li::before{
  content:"";position:absolute;left:2px;top:9px;width:8px;height:8px;border-radius:2px;
  background:var(--amber);transform:rotate(45deg);
}

/* ---------- 验证方式列表 ---------- */
.verify-list{display:grid;gap:14px}
.verify-row{
  position:relative;
  display:grid;grid-template-columns:56px 1fr auto;align-items:center;gap:20px;
  padding:22px 26px;border-radius:var(--r-md);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.verify-row::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:4px;
  background:var(--cyan);transform:scaleY(0);transition:transform .2s ease;
}
.verify-row:hover{transform:translateY(-3px);border-color:var(--line-hover);background:rgba(255,255,255,.08);box-shadow:var(--shadow-glow)}
.verify-row:hover::before{transform:scaleY(1)}
.vr-icon{
  width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:rgba(63,224,200,.12);border:1px solid rgba(63,224,200,.28);color:var(--cyan);
}
.vr-icon svg{width:24px;height:24px}
.vr-main h3{font-size:17px;font-weight:700;margin-bottom:6px}
.vr-main p{color:var(--t-2);font-size:14.5px}
.vr-meta{display:flex;align-items:center;gap:12px}
.vr-time{font-size:13.5px;color:var(--t-3);font-variant-numeric:tabular-nums;white-space:nowrap}

/* ---------- 准备清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.check-item{
  display:flex;gap:14px;padding:22px;border-radius:var(--r-md);
  background:rgba(255,255,255,.045);border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease,background .2s ease;
}
.check-item:hover{border-color:var(--line-hover);transform:translateY(-3px);background:rgba(255,255,255,.07)}
.check-item svg{flex:none;width:22px;height:22px;color:var(--cyan);margin-top:3px}
.check-item h3{font-size:16px;font-weight:600;margin-bottom:6px}
.check-item p{font-size:14px;color:var(--t-2);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.faq-item{
  border-radius:var(--r-md);background:rgba(255,255,255,.05);
  border:1px solid var(--line);overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item[open]{border-color:var(--line-hover);background:rgba(255,255,255,.075)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:20px 22px;
  display:flex;align-items:flex-start;gap:14px;
  font-size:16px;font-weight:600;line-height:1.6;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--cyan)}
.faq-item summary::after{
  content:"+";margin-left:auto;color:var(--cyan);font-size:20px;line-height:1;
  font-weight:400;transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{
  position:relative;padding:0 22px 22px 54px;
  color:var(--t-2);font-size:15px;line-height:1.9;
}
.faq-body::before{
  content:"";position:absolute;left:22px;top:4px;bottom:24px;width:4px;border-radius:4px;background:var(--cyan);
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;padding:66px 0;
  background-image:linear-gradient(115deg,rgba(11,8,24,.94),rgba(34,26,69,.84)),url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  border-top:1px solid var(--line);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px}
.cta-inner h2{font-size:clamp(23px,3vw,32px);font-weight:700;letter-spacing:-.4px;line-height:1.35}
.cta-inner p{margin-top:12px;color:var(--t-2);font-size:16px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{color:var(--t-1)}
.footer-brand p{margin-top:16px;color:var(--t-3);font-size:14px;line-height:1.85;max-width:330px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--t-1)}
.footer-col ul{display:grid;gap:11px}
.footer-col a{color:var(--t-2);font-size:14px;transition:color .2s ease}
.footer-col a:hover{color:var(--cyan)}
.footer-contact li{color:var(--t-3);font-size:14px}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  color:var(--t-3);font-size:13px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .main-nav{display:none}
  .search-box{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{height:64px;gap:12px}
  .section{padding:64px 0}
  .check-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .step{grid-template-columns:64px 1fr}
  .step-media{flex:0 0 46%}
}
@media (max-width:767px){
  .container{padding:0 16px}
  body{font-size:15.5px}
  .section{padding:48px 0}
  .section-head{margin-bottom:32px}
  .page-banner{padding:40px 0 46px}
  .step{grid-template-columns:1fr;padding-bottom:24px}
  .step-rail{justify-content:flex-start;margin-bottom:14px}
  .step-rail::before{left:26px;top:54px;bottom:-24px;transform:none}
  .step-body{flex-direction:column;align-items:stretch;padding:20px;gap:20px}
  .step:nth-child(even) .step-body{flex-direction:column}
  .step-media{flex:none}
  .verify-row{grid-template-columns:1fr;gap:14px;padding:20px}
  .vr-meta{justify-content:flex-start;flex-wrap:wrap}
  .check-grid{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .faq-body{padding:0 20px 20px 46px}
  .faq-body::before{left:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:6px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .banner-tags{gap:8px}
}
@media (max-width:480px){
  .brand-text{font-size:15px;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .btn{height:46px;padding:0 20px;font-size:14.5px}
  .step-dot{width:46px;height:46px;font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
/* ========== 设计变量 ========== */
:root{
  --ink-900:#0b0818;
  --ink-800:#150f2e;
  --ink-700:#221a45;
  --cyan:#3fe0c8;
  --cyan-deep:#1fae9c;
  --amber:#ffc85c;
  --paper:#f6f4ef;
  --paper-line:#e7e3da;
  --t-strong:rgba(255,255,255,.92);
  --t-mid:rgba(255,255,255,.66);
  --t-dim:rgba(255,255,255,.42);
  --line-dark:rgba(255,255,255,.12);
  --line-dark-hover:rgba(63,224,200,.45);
  --paper-ink:#1c1442;
  --paper-ink-mid:#55506b;
  --err:#ff6b6b;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --r-xs:12px;
  --shadow-glass:0 8px 30px rgba(63,224,200,.18), 0 20px 60px rgba(0,0,0,.45);
  --shadow-paper:0 4px 18px rgba(28,20,66,.08);
  --ease:200ms ease;
}

/* ========== 基础 reset ========== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t-strong);
  background:var(--ink-800);
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.25;font-weight:700;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

/* ========== 容器与通用 ========== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1440px){.container{max-width:1280px;}}

.section{padding:88px 0;position:relative;}
.section-tight{padding:64px 0;}
.section-dark{background:var(--ink-800);}
.section-deep{background:var(--ink-900);}
.section-paper{background:var(--paper);color:var(--paper-ink);}
.section-nebula{
  background:
    radial-gradient(600px 320px at 12% 0%, rgba(63,224,200,.10), transparent 70%),
    radial-gradient(700px 380px at 88% 100%, rgba(120,84,255,.14), transparent 72%),
    var(--ink-700);
}
.stars{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 20px 30px, rgba(255,255,255,.055) 50%, transparent 51%),
    radial-gradient(1px 1px at 90px 80px, rgba(255,255,255,.045) 50%, transparent 51%),
    radial-gradient(1px 1px at 150px 40px, rgba(255,255,255,.05) 50%, transparent 51%);
  background-size:160px 160px;
}
.sec-head{max-width:760px;margin-bottom:40px;position:relative;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-eyebrow{
  display:inline-block;font-size:13px;letter-spacing:2px;color:var(--amber);
  border:1px solid rgba(255,200,92,.35);border-radius:999px;padding:4px 14px;margin-bottom:16px;
}
.section-paper .sec-eyebrow{color:#8a6110;border-color:rgba(138,97,16,.3);}
.sec-title{font-size:clamp(24px,3.2vw,34px);letter-spacing:-.3px;}
.sec-sub{margin-top:14px;color:var(--t-mid);font-size:16px;line-height:1.9;}
.section-paper .sec-sub{color:var(--paper-ink-mid);}

/* ========== 头部导航 ========== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,239,.94);
  backdrop-filter:blur(10px) saturate(140%);
  border-bottom:1px solid var(--paper-line);
  color:var(--paper-ink);
  transition:box-shadow var(--ease);
}
.site-header.scrolled{box-shadow:0 4px 18px rgba(28,20,66,.08);}
.header-inner{display:flex;align-items:center;gap:18px;height:74px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--paper-ink);flex-shrink:0;}
.brand-mark{width:28px;height:28px;color:var(--cyan-deep);flex-shrink:0;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.header-collapse{display:flex;align-items:center;gap:16px;flex:1;min-width:0;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px;flex-wrap:nowrap;}
.main-nav a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;
  font-size:15px;color:var(--paper-ink-mid);white-space:nowrap;
  transition:background var(--ease),color var(--ease);
}
.main-nav a:hover{color:var(--paper-ink);background:rgba(28,20,66,.06);}
.main-nav a.active{color:#0d7466;background:rgba(63,224,200,.20);font-weight:600;}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.header-search{
  display:flex;align-items:center;gap:8px;width:230px;height:42px;padding:0 16px;
  border:1px solid var(--paper-line);border-radius:999px;background:#fff;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.header-search:focus-within{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(63,224,200,.18);}
.header-search svg{width:16px;height:16px;color:var(--paper-ink-mid);flex-shrink:0;}
.header-search input{border:none;outline:none;background:transparent;width:100%;font-size:14px;color:var(--paper-ink);}
.header-search input::placeholder{color:#9a94ac;}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;
  border-radius:999px;background:var(--ink-700);color:#fff;font-size:15px;font-weight:600;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease);
}
.btn-cta:hover{background:#2c2258;transform:translateY(-2px);box-shadow:0 10px 26px rgba(34,26,69,.28);}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;border-radius:12px;
  align-items:center;justify-content:center;color:var(--paper-ink);background:rgba(28,20,66,.06);
}
.nav-toggle svg{width:22px;height:22px;}
@media (max-width:1023px){
  .header-inner{height:66px;}
  .nav-toggle{display:inline-flex;}
  .header-collapse{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:8px;
    background:#fff;border-bottom:1px solid var(--paper-line);
    padding:16px 20px 22px;box-shadow:0 18px 40px rgba(28,20,66,.12);
  }
  .site-header.open .header-collapse{display:flex;}
  .main-nav{flex-direction:column;align-items:stretch;margin:0;gap:2px;}
  .main-nav a{height:46px;border-radius:12px;font-size:16px;padding:0 14px;}
  .header-actions{margin:6px 0 0;flex-direction:column;align-items:stretch;gap:10px;}
  .header-search{width:100%;height:46px;}
  .header-search input{font-size:15px;}
  .btn-cta{height:48px;width:100%;}
}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:999px;font-size:16px;font-weight:600;
  border:1px solid transparent;text-align:center;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),opacity var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));
  color:#06231f;box-shadow:0 8px 30px rgba(63,224,200,.18);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(63,224,200,.34);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.24);color:var(--t-strong);}
.btn-ghost:hover{border-color:var(--cyan);background:rgba(63,224,200,.08);transform:translateY(-2px);}
.btn-ink{background:var(--ink-700);color:#fff;}
.btn-ink:hover{background:#2c2258;transform:translateY(-2px);box-shadow:0 12px 28px rgba(34,26,69,.24);}
.btn-line{border-color:rgba(63,224,200,.5);color:var(--cyan);background:rgba(63,224,200,.06);}
.btn-line:hover{background:rgba(63,224,200,.16);transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn:disabled,.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-size:15px;font-weight:600;
  border-bottom:2px solid transparent;transition:border-color var(--ease),color var(--ease);
}
.link-arrow:hover{border-bottom-color:var(--cyan);}
.section-paper .link-arrow{color:#0d7466;}

/* ========== 徽章 / 标签 ========== */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:13px;line-height:1;
  background:rgba(255,255,255,.08);border:1px solid var(--line-dark);color:var(--t-mid);
  white-space:nowrap;
}
.badge-amber{color:var(--amber);border-color:rgba(255,200,92,.35);background:rgba(255,200,92,.10);}
.badge-cyan{color:var(--cyan);border-color:rgba(63,224,200,.35);background:rgba(63,224,200,.10);}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.chip{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:999px;
  font-size:14px;color:var(--t-mid);background:rgba(255,255,255,.06);
  border:1px solid var(--line-dark);transition:all var(--ease);
}
.chip:hover{color:var(--t-strong);border-color:var(--line-dark-hover);transform:translateY(-2px);}
.chip.active{color:#bdfff2;background:rgba(63,224,200,.16);border-color:rgba(63,224,200,.5);font-weight:600;}

/* ========== 面包屑 ========== */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--t-dim);margin-bottom:22px;flex-wrap:wrap;}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.25);}
.breadcrumb a{color:var(--t-mid);transition:color var(--ease);}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb .current{color:var(--t-dim);}

/* ========== 页面 Banner ========== */
.page-hero{position:relative;overflow:hidden;background:var(--ink-900);padding:52px 0 68px;}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.42;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg, rgba(11,8,24,.72) 0%, rgba(11,8,24,.88) 78%, var(--ink-900) 100%),
    radial-gradient(520px 280px at 78% 12%, rgba(63,224,200,.20), transparent 70%);
}
.page-hero .container{position:relative;z-index:2;}
.page-hero h1{font-size:clamp(28px,4.2vw,46px);letter-spacing:-.5px;max-width:900px;}
.page-hero .lede{margin-top:18px;max-width:720px;color:var(--t-mid);font-size:17px;line-height:1.9;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:0;margin-top:38px;border-top:1px solid var(--line-dark);padding-top:26px;
  max-width:760px;
}
.hero-stats .stat{padding-right:24px;}
.hero-stats .stat+.stat{border-left:1px solid var(--line-dark);padding-left:24px;}
.stat-num{font-size:26px;font-weight:700;color:var(--cyan);letter-spacing:-.5px;}
.stat-label{font-size:13px;color:var(--t-dim);margin-top:4px;letter-spacing:.5px;}

/* ========== 非对称分栏 ========== */
.split{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:32px;align-items:start;}
@media (max-width:1023px){.split{grid-template-columns:1fr;gap:28px;}}

/* ========== 资源列表行 ========== */
.res-list{display:flex;flex-direction:column;gap:18px;}
.res-row{
  position:relative;display:grid;grid-template-columns:180px minmax(0,1fr);gap:22px;
  padding:20px;border-radius:var(--r-md);
  background:rgba(255,255,255,.06);
  border:1px solid var(--line-dark);
  backdrop-filter:blur(14px) saturate(140%);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease),background var(--ease);
  overflow:hidden;
}
.res-row::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:4px;border-radius:0 4px 4px 0;
  background:var(--cyan);transform:scaleY(0);transform-origin:top;transition:transform var(--ease);
}
.res-row:hover{transform:translateY(-4px);border-color:var(--line-dark-hover);background:rgba(255,255,255,.09);box-shadow:var(--shadow-glass);}
.res-row:hover::before{transform:scaleY(1);}
.res-thumb{border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line-dark);aspect-ratio:16/10;background:var(--ink-700);}
.res-thumb img{width:100%;height:100%;object-fit:cover;}
.res-body h3{font-size:18px;margin-bottom:8px;}
.res-body h3 a{transition:color var(--ease);}
.res-row:hover .res-body h3 a{color:var(--cyan);}
.res-body p{font-size:15px;color:var(--t-mid);line-height:1.8;}
.res-meta{display:flex;align-items:center;gap:12px;margin-top:14px;flex-wrap:wrap;}
@media (max-width:600px){
  .res-row{grid-template-columns:1fr;}
  .res-thumb{aspect-ratio:16/9;}
}

/* ========== 侧栏窄栏 ========== */
.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
@media (max-width:1023px){.side-col{position:static;}}
.side-card{
  border-radius:var(--r-lg);padding:24px;
  background:rgba(255,255,255,.09);
  border:1px solid var(--line-dark);
  backdrop-filter:blur(14px) saturate(140%);
}
.side-card h3{font-size:17px;margin-bottom:16px;display:flex;align-items:center;gap:10px;}
.side-card h3::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--amber);flex-shrink:0;}
.side-links li+li{margin-top:2px;border-top:1px solid rgba(255,255,255,.07);}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 2px;font-size:15px;color:var(--t-mid);transition:color var(--ease),padding var(--ease);
}
.side-links a span:last-child{color:var(--t-dim);transition:transform var(--ease),color var(--ease);}
.side-links a:hover{color:var(--cyan);}
.side-links a:hover span:last-child{transform:translateX(4px);color:var(--cyan);}
.progress-track{display:flex;gap:6px;margin:6px 0 14px;}
.progress-track i{flex:1;height:6px;border-radius:999px;background:rgba(255,255,255,.14);}
.progress-track i.done{background:var(--cyan);box-shadow:0 0 12px rgba(63,224,200,.5);}
.progress-note{font-size:14px;color:var(--t-mid);line-height:1.75;}
.progress-num{font-size:22px;font-weight:700;color:var(--cyan);letter-spacing:-.5px;}
.side-card .btn{width:100%;margin-top:16px;}
.support-card{background:linear-gradient(150deg,rgba(63,224,200,.14),rgba(255,255,255,.05));}
.support-card .hours{font-size:14px;color:var(--t-mid);margin-top:6px;}

/* ========== 下载资源区 ========== */
.dl-list{display:flex;flex-direction:column;gap:12px;}
.dl-item{
  display:flex;align-items:center;gap:18px;padding:18px 22px;border-radius:var(--r-md);
  background:rgba(255,255,255,.05);border:1px solid var(--line-dark);
  transition:all var(--ease);
}
.dl-item:hover{transform:translateY(-3px);border-color:var(--line-dark-hover);background:rgba(255,255,255,.09);box-shadow:0 8px 30px rgba(63,224,200,.14);}
.dl-icon{
  width:44px;height:44px;flex-shrink:0;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(63,224,200,.12);border:1px solid rgba(63,224,200,.3);color:var(--cyan);font-size:13px;font-weight:700;
}
.dl-info{flex:1;min-width:0;}
.dl-info h4{font-size:16px;margin-bottom:2px;}
.dl-info span{font-size:13px;color:var(--t-dim);}
.dl-action{flex-shrink:0;}
@media (max-width:600px){
  .dl-item{flex-wrap:wrap;gap:12px;}
  .dl-action{width:100%;}
  .dl-action .btn{width:100%;}
}

/* ========== 浅色服务保障 ========== */
.paper-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
@media (max-width:1023px){.paper-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:600px){.paper-grid{grid-template-columns:1fr;}}
.paper-card{
  background:#fff;border:1px solid var(--paper-line);border-radius:var(--r-md);
  padding:26px 22px;box-shadow:var(--shadow-paper);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.paper-card:hover{transform:translateY(-4px);border-color:rgba(63,224,200,.6);box-shadow:0 14px 34px rgba(28,20,66,.12);}
.paper-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(34,26,69,.06);color:var(--ink-700);margin-bottom:16px;
}
.paper-icon svg{width:22px;height:22px;}
.paper-card h3{font-size:17px;color:var(--paper-ink);margin-bottom:8px;}
.paper-card p{font-size:15px;color:var(--paper-ink-mid);line-height:1.8;}

/* ========== FAQ ========== */
.faq-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:40px;align-items:start;}
@media (max-width:900px){.faq-layout{grid-template-columns:1fr;gap:26px;}}
.faq-side h2{font-size:clamp(24px,3.2vw,32px);}
.faq-side p{margin-top:14px;color:var(--t-mid);font-size:15.5px;line-height:1.9;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border:1px solid var(--line-dark);border-radius:var(--r-md);
  background:rgba(255,255,255,.06);transition:border-color var(--ease),background var(--ease);
}
.faq-item[open]{border-left:4px solid var(--cyan);border-color:var(--line-dark-hover);background:rgba(255,255,255,.09);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;font-size:17px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";width:10px;height:10px;flex-shrink:0;
  border-right:2px solid var(--cyan);border-bottom:2px solid var(--cyan);
  transform:rotate(45deg);transition:transform var(--ease);
}
.faq-item[open] summary::after{transform:rotate(-135deg);}
.faq-answer{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--t-mid);}

/* ========== CTA 带 ========== */
.cta-band{
  position:relative;overflow:hidden;padding:72px 0;
  background:linear-gradient(120deg,var(--ink-700) 0%,var(--ink-900) 68%);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(63,224,200,.22),transparent 66%);filter:blur(30px);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(24px,3.2vw,32px);max-width:620px;}
.cta-inner p{margin-top:12px;color:var(--t-mid);max-width:620px;font-size:16px;line-height:1.85;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
@media (max-width:600px){
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}

/* ========== 页脚 ========== */
.site-footer{background:var(--ink-900);border-top:1px solid rgba(255,255,255,.08);padding:64px 0 26px;color:var(--t-mid);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand .brand{color:var(--t-strong);margin-bottom:16px;}
.footer-brand .brand-mark{color:var(--cyan);}
.footer-brand p{font-size:14.5px;line-height:1.9;color:var(--t-mid);max-width:340px;}
.footer-col h4{font-size:15px;color:var(--t-strong);margin-bottom:16px;letter-spacing:.5px;}
.footer-col ul li+li{margin-top:9px;}
.footer-col a{font-size:14.5px;color:var(--t-mid);transition:color var(--ease),padding-left var(--ease);}
.footer-col a:hover{color:var(--cyan);padding-left:4px;}
.footer-contact li{font-size:14.5px;line-height:1.9;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13.5px;color:var(--t-dim);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:600px){
  .footer-grid{grid-template-columns:1fr;}
  .section{padding:56px 0;}
  .page-hero{padding:36px 0 52px;}
  .hero-stats{grid-template-columns:1fr;gap:16px;}
  .hero-stats .stat{padding-right:0;}
  .hero-stats .stat+.stat{border-left:none;border-top:1px solid var(--line-dark);padding-left:0;padding-top:16px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .brand-text{font-size:15.5px;}
  .btn{width:100%;}
  .chip-row{gap:8px;}
  .chip{height:38px;padding:0 16px;font-size:13px;}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
/* ============ 设计变量 ============ */
:root{
  --ink-900:#0b0818;
  --ink-800:#150f2e;
  --ink-700:#221a45;
  --cyan:#3fe0c8;
  --cyan-deep:#1fae9c;
  --amber:#ffc85c;
  --paper:#f6f4ef;
  --paper-line:#e7e3da;
  --text-dark:#1c1442;
  --text-soft:#55506b;

  --wt-1:rgba(255,255,255,.92);
  --wt-2:rgba(255,255,255,.66);
  --wt-3:rgba(255,255,255,.42);
  --line-dark:rgba(255,255,255,.12);
  --line-cyan:rgba(63,224,200,.45);

  --danger:#ff6b6b;
  --success:#3fe0c8;

  --r-xl:24px;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;

  --shadow-glow:0 8px 30px rgba(63,224,200,.18);
  --shadow-deep:0 20px 60px rgba(0,0,0,.45);
  --shadow-light:0 4px 18px rgba(28,20,66,.08);

  --container:1200px;
  --gutter:20px;
  --ease:200ms ease;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--wt-1);
  background-color:var(--ink-800);
  background-image:
    radial-gradient(circle at 10% 6%, rgba(63,224,200,.10), transparent 42%),
    radial-gradient(circle at 90% 18%, rgba(122,86,224,.16), transparent 46%),
    radial-gradient(circle at 50% 92%, rgba(63,224,200,.07), transparent 50%),
    radial-gradient(rgba(255,255,255,.055) 1px, transparent 1px);
  background-size:auto,auto,auto,24px 24px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--ease);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
svg{display:block;}

h1{
  font-size:clamp(28px,4vw,44px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.5px;
}
h2{
  font-size:clamp(23px,3.2vw,34px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.4px;
}
h3{font-size:21px;font-weight:700;line-height:1.4;}
h4{font-size:17px;font-weight:700;line-height:1.5;}

:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px;}

::selection{background:rgba(63,224,200,.35);color:#fff;}

/* ============ 容器与板块 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--gutter);
}
.section{padding:88px 0;position:relative;}
.section--deep{background:var(--ink-800);}
.section--panel{
  background:
    linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.012)),
    var(--ink-800);
  border-top:1px solid var(--line-dark);
  border-bottom:1px solid var(--line-dark);
}
.section--paper{background:var(--paper);color:var(--text-dark);}
.section--paper .sec-sub{color:var(--text-soft);}

.sec-head{margin-bottom:44px;max-width:760px;}
.sec-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:2px;
  color:var(--cyan);
  padding:5px 14px;
  border:1px solid var(--line-cyan);
  border-radius:999px;
  background:rgba(63,224,200,.07);
  margin-bottom:18px;
}
.section--paper .sec-label{color:var(--ink-700);border-color:var(--paper-line);background:#fff;}
.sec-sub{color:var(--wt-2);margin-top:14px;font-size:16px;max-width:720px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));
  color:#06231f;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 36px rgba(63,224,200,.34);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.24);
  color:var(--wt-1);
}
.btn-ghost:hover{border-color:var(--cyan);background:rgba(63,224,200,.08);}
.btn-dark{background:var(--ink-700);color:#fff;box-shadow:var(--shadow-light);}
.btn-dark:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(34,26,69,.28);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn .spinner{
  width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(6,35,31,.28);
  border-top-color:#06231f;
  animation:spin .7s linear infinite;
  display:none;
}
.btn.is-loading .spinner{display:block;}
.btn.is-loading .btn-label{opacity:.75;}
@keyframes spin{to{transform:rotate(360deg);}}

.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--cyan);font-size:14px;font-weight:600;
}
.text-link:hover{text-decoration:underline;text-underline-offset:4px;}
.section--paper .text-link{color:var(--cyan-deep);}

/* ============ 顶栏导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px) saturate(140%);
  border-bottom:1px solid var(--paper-line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(28,20,66,.08);}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:72px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  color:var(--text-dark);
  font-weight:700;font-size:17px;letter-spacing:-.2px;
  white-space:nowrap;
  flex-shrink:0;
}
.brand-mark{width:28px;height:28px;color:var(--cyan-deep);flex-shrink:0;}
.brand-text{line-height:1;}

.main-nav{
  display:flex;align-items:center;gap:2px;
  margin:0 auto;
}
.main-nav a{
  position:relative;
  padding:9px 15px;
  border-radius:999px;
  font-size:15px;
  color:#3a3550;
  min-height:44px;
  display:inline-flex;align-items:center;
  transition:color var(--ease),background var(--ease);
}
.main-nav a:hover{color:var(--text-dark);background:rgba(63,224,200,.12);}
.main-nav a.active{color:var(--text-dark);font-weight:600;}
.main-nav a.active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:3px;
  height:2px;border-radius:2px;background:var(--cyan-deep);
}

.header-tools{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:220px;height:42px;padding:0 16px;
  border-radius:999px;
  border:1px solid var(--paper-line);
  background:#fff;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.search-box:focus-within{border-color:var(--cyan-deep);box-shadow:0 0 0 3px rgba(63,224,200,.18);}
.search-box svg{width:16px;height:16px;color:#8b869c;flex-shrink:0;}
.search-box input{
  border:0;background:transparent;outline:none;
  width:100%;font-size:14px;color:var(--text-dark);
}
.search-box input::placeholder{color:#9c97ac;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--paper-line);
  background:#fff;
  align-items:center;justify-content:center;
  color:var(--text-dark);
}
.nav-toggle svg{width:20px;height:20px;}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--paper-line);
  background:#fff;
  padding:16px 0 22px;
}
.mobile-drawer.open{display:block;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:16px;}
.drawer-nav a{
  padding:13px 16px;border-radius:12px;
  color:var(--text-dark);font-size:15px;
  background:rgba(28,20,66,.035);
}
.drawer-nav a.active{background:rgba(63,224,200,.16);font-weight:600;}
.drawer-tools{display:flex;flex-direction:column;gap:12px;}
.drawer-tools .search-box{width:100%;}
.drawer-tools .btn{width:100%;}

/* ============ 页面横幅 ============ */
.page-banner{
  position:relative;
  min-height:280px;
  display:flex;align-items:center;
  padding:56px 0 60px;
  overflow:hidden;
  background-image:
    linear-gradient(100deg,rgba(11,8,24,.92) 12%,rgba(11,8,24,.74) 58%,rgba(21,15,46,.86) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line-dark);
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px);
  background-size:24px 24px;
  opacity:.7;pointer-events:none;
}
.page-banner .container{position:relative;z-index:1;}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--wt-3);
  margin-bottom:18px;
}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.28);}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb .current{color:var(--wt-2);cursor:default;
  max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.banner-title{max-width:860px;}
.banner-title h1{margin-bottom:16px;}
.banner-title h1 em{font-style:normal;color:var(--cyan);}
.banner-lead{
  font-size:16px;color:var(--wt-2);max-width:700px;
}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;
  border-radius:999px;
  font-size:13px;
  border:1px solid var(--line-dark);
  background:rgba(255,255,255,.08);
  color:var(--wt-2);
}
.badge-amber{color:var(--amber);border-color:rgba(255,200,92,.32);background:rgba(255,200,92,.08);}
.section--paper .badge{border-color:var(--paper-line);background:#fff;color:var(--text-soft);}

/* ============ 自查三步条 ============ */
.check-steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.check-card{
  position:relative;
  padding:26px 24px;
  border-radius:var(--r-lg);
  border:1px solid var(--line-dark);
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.check-card:hover{transform:translateY(-4px);border-color:var(--line-cyan);box-shadow:var(--shadow-glow);}
.check-num{
  font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:700;
  letter-spacing:2px;
  color:rgba(255,255,255,.28);
  line-height:1;margin-bottom:14px;
}
.check-card h3{font-size:18px;margin-bottom:10px;}
.check-card p{font-size:15px;color:var(--wt-2);}
.check-card .mini{
  display:inline-block;margin-top:14px;
  font-size:13px;color:var(--cyan);
  border-bottom:1px dashed rgba(63,224,200,.4);
}

/* ============ 咨询主区 ============ */
.support-grid{
  display:grid;
  grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);
  gap:32px;
  align-items:start;
}

.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border-radius:var(--r-lg);
  border:1px solid var(--line-dark);
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.faq-item:hover{border-color:var(--line-cyan);}
.faq-item.open{
  border-color:var(--line-cyan);
  box-shadow:var(--shadow-glow);
  background:rgba(255,255,255,.09);
}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 22px;
  background:none;border:0;
  color:var(--wt-1);
  font-size:17px;font-weight:600;
  text-align:left;
  min-height:44px;
}
.faq-item.open .faq-q{color:var(--cyan);}
.faq-mark{
  flex-shrink:0;
  width:26px;height:26px;border-radius:8px;
  border:1px solid var(--line-dark);
  display:flex;align-items:center;justify-content:center;
  transition:transform var(--ease),border-color var(--ease),background var(--ease);
  color:var(--wt-2);
}
.faq-mark svg{width:13px;height:13px;}
.faq-item.open .faq-mark{
  transform:rotate(45deg);
  border-color:var(--line-cyan);
  background:rgba(63,224,200,.12);
  color:var(--cyan);
}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 300ms ease;
}
.faq-a-inner{
  position:relative;
  padding:0 24px 22px 38px;
  font-size:15px;line-height:1.9;
  color:var(--wt-2);
}
.faq-a-inner::before{
  content:"";position:absolute;left:22px;top:2px;bottom:22px;
  width:4px;border-radius:2px;background:var(--cyan);
  opacity:.85;
}

/* ============ 表单卡 ============ */
.form-card{
  position:sticky;top:96px;
  padding:30px 28px 32px;
  border-radius:var(--r-xl);
  border:1px solid var(--line-dark);
  background:rgba(255,255,255,.09);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-deep);
}
.form-card h2{font-size:23px;margin-bottom:10px;}
.form-card .form-intro{font-size:14px;color:var(--wt-2);margin-bottom:24px;}
.consult-form{display:flex;flex-direction:column;gap:16px;}
.field{display:flex;flex-direction:column;gap:7px;}
.field label{font-size:14px;color:var(--wt-2);}
.field .req{color:var(--amber);}
.field input,
.field select,
.field textarea{
  width:100%;
  border-radius:var(--r-sm);
  border:1px solid var(--line-dark);
  background:rgba(11,8,24,.45);
  color:var(--wt-1);
  padding:12px 14px;
  font-size:15px;
  outline:none;
  transition:border-color var(--ease),box-shadow var(--ease);
  min-height:46px;
}
.field textarea{min-height:112px;resize:vertical;line-height:1.75;}
.field select{appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,rgba(255,255,255,.5) 50%),linear-gradient(135deg,rgba(255,255,255,.5) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
  background-size:6px 6px,6px 6px;
  background-repeat:no-repeat;
}
.field input::placeholder,
.field textarea::placeholder{color:rgba(255,255,255,.32);}
.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(63,224,200,.16);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea{
  border-color:var(--danger);
  box-shadow:0 0 0 3px rgba(255,107,107,.14);
}
.field-error{
  font-size:13px;color:var(--danger);
  line-height:1.6;
}
.field-note{font-size:12px;color:var(--wt-3);line-height:1.7;}

.form-status{
  display:none;
  padding:12px 16px;
  border-radius:var(--r-sm);
  font-size:14px;
  line-height:1.7;
}
.form-status.show{display:block;}
.form-status.success{
  background:rgba(63,224,200,.12);
  border:1px solid rgba(63,224,200,.4);
  color:var(--cyan);
}
.form-status.error{
  background:rgba(255,107,107,.1);
  border:1px solid rgba(255,107,107,.4);
  color:var(--danger);
}

/* ============ 联系与地图 ============ */
.contact-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  margin-bottom:24px;
}
.contact-card{
  background:#fff;
  border:1px solid var(--paper-line);
  border-radius:var(--r-lg);
  padding:26px 24px;
  box-shadow:var(--shadow-light);
  transition:transform var(--ease),box-shadow var(--ease);
}
.contact-card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(28,20,66,.12);}
.contact-icon{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(31,174,156,.12);
  color:var(--cyan-deep);
  margin-bottom:16px;
}
.contact-icon svg{width:20px;height:20px;}
.contact-card h3{font-size:18px;margin-bottom:8px;color:var(--text-dark);}
.contact-card p{font-size:14px;color:var(--text-soft);line-height:1.8;}
.contact-card ul{margin-top:12px;display:flex;flex-direction:column;gap:8px;}
.contact-card li{font-size:14px;color:var(--text-soft);}
.contact-card li a{color:var(--cyan-deep);font-weight:600;}
.contact-card li a:hover{text-decoration:underline;text-underline-offset:4px;}

.map-block{
  position:relative;
  min-height:210px;
  border-radius:var(--r-xl);
  border:1px solid var(--ink-700);
  background:
    radial-gradient(circle at 30% 30%, rgba(63,224,200,.16), transparent 55%),
    radial-gradient(circle at 76% 70%, rgba(122,86,224,.22), transparent 58%),
    var(--ink-900);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;
  text-align:center;
  padding:32px 24px;
  overflow:hidden;
  color:var(--wt-2);
}
.map-block::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px);
  background-size:24px 24px;opacity:.8;pointer-events:none;
}
.map-block svg{width:34px;height:34px;color:var(--cyan);position:relative;z-index:1;}
.map-block strong{position:relative;z-index:1;display:block;color:var(--wt-1);font-size:17px;font-weight:600;}
.map-block span{position:relative;z-index:1;font-size:14px;color:var(--wt-3);max-width:520px;}

/* ============ CTA 带 ============ */
.cta-band{
  background:
    radial-gradient(circle at 88% 20%, rgba(63,224,200,.16), transparent 48%),
    linear-gradient(120deg,var(--ink-900),var(--ink-700));
  border-top:1px solid var(--line-dark);
  padding:64px 0;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.8vw,30px);margin-bottom:10px;}
.cta-inner p{ font-size:15px;color:var(--wt-2);max-width:620px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);
  color:var(--wt-2);
  padding:68px 0 0;
  border-top:1px solid var(--line-dark);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:52px;
}
.footer-brand .brand{color:var(--wt-1);margin-bottom:16px;}
.footer-brand .brand-mark{color:var(--cyan);}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--wt-2);max-width:340px;}
.footer-col h4{
  font-size:15px;color:var(--wt-1);
  margin-bottom:18px;letter-spacing:.5px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--wt-2);}
.footer-col a:hover{color:var(--cyan);}
.footer-contact li{font-size:14px;color:var(--wt-2);}
.footer-bottom{
  border-top:1px solid var(--line-dark);
  padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--wt-3);
}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  :root{--container:1280px;}
}
@media (max-width:1180px){
  .search-box{width:180px;}
  .main-nav a{padding:9px 11px;font-size:14px;}
}
@media (max-width:1023px){
  .main-nav,.header-tools .search-box,.header-tools .btn{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:66px;}
  .support-grid{grid-template-columns:1fr;gap:28px;}
  .form-card{position:static;}
  .check-steps{grid-template-columns:1fr;gap:16px;}
  .contact-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .section{padding:60px 0;}
  .page-banner{min-height:auto;padding:44px 0 48px;}
}
@media (max-width:767px){
  :root{--gutter:16px;}
  body{font-size:15.5px;}
  .section{padding:48px 0;}
  .banner-title h1{font-size:clamp(24px,6.6vw,32px);}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-inner .btn{width:100%;}
  .btn{width:100%;}
  .banner-tags .badge{font-size:12px;}
  .faq-q{font-size:15.5px;padding:16px 18px;}
  .faq-a-inner{padding:0 18px 20px 30px;}
  .faq-a-inner::before{left:16px;}
  .form-card{padding:24px 18px 26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .breadcrumb .current{max-width:160px;}
}
@media (max-width:480px){
  .brand-text{font-size:15px;}
  .brand-mark{width:24px;height:24px;}
  .contact-card{padding:22px 18px;}
  .check-card{padding:22px 18px;}
  .map-block{min-height:180px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}