/* roulang page: index */
:root{
  --brand:#6C4CF1;
  --brand-2:#1FE0C4;
  --accent:#FF8A3D;
  --danger:#FF5B7A;
  --success:#24D07A;
  --bg:#0E0820;
  --bg-soft:#120C28;
  --panel:#17112E;
  --panel-2:#1E1740;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --ink:#F4F2FF;
  --ink-2:#B4AAD8;
  --light:#F7F5FF;
  --light-ink:#241C3D;
  --light-ink-2:#5A4F7D;
  --grad:linear-gradient(135deg,#6C4CF1 0%,#1FE0C4 100%);
  --grad-warm:linear-gradient(135deg,#FF8A3D 0%,#FF4D8D 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(9,4,26,.45);
  --sh-2:0 16px 40px rgba(108,76,241,.28);
  --sh-3:0 0 0 1px rgba(108,76,241,.5);
  --container:1200px;
  --gutter:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em}
p{margin:0 0 .9em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
::selection{background:rgba(108,76,241,.45);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.section{padding:72px 0;position:relative}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:32px}
.section-head h2{font-size:32px;line-height:1.3}
.section-desc{max-width:520px;color:var(--ink-2);font-size:15px;line-height:1.8;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;color:var(--brand-2);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--grad);display:inline-block}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(14,8,32,.74);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(14,8,32,.97);
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px rgba(9,4,26,.5);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:74px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(108,76,241,.4);
}
.brand-mark svg{width:20px;height:20px;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:17px;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-2);letter-spacing:.22em;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{
  position:relative;padding:10px 14px;border-radius:var(--r-pill);
  font-size:15px;color:var(--ink-2);transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--ink);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--grad);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:0 14px;height:42px;width:230px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.28);background:rgba(255,255,255,.07)}
.search-box svg{width:16px;height:16px;flex-shrink:0;color:var(--ink-2)}
.search-box input{
  background:none;border:0;outline:none;width:100%;font-size:14px;color:var(--ink);
}
.search-box input::placeholder{color:#7C729F}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);font-size:15px;font-weight:600;
  padding:0 22px;height:44px;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease,color .2s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(108,76,241,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(108,76,241,.12)}
.btn-ghost:active{transform:translateY(1px)}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand-2);font-weight:600;font-size:14.5px;
}
.btn-text .arrow{transition:transform .2s ease}
.btn-text:hover .arrow{transform:translateX(4px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:var(--panel);border-left:1px solid var(--line);
  transform:translateX(105%);transition:transform .32s ease;
  z-index:90;padding:24px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--ink-2)}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:24px}
.drawer-nav a{padding:13px 14px;border-radius:var(--r-sm);color:var(--ink-2);font-size:16px}
.drawer-nav a:hover,.drawer-nav a.is-active{background:rgba(108,76,241,.16);color:var(--ink)}
.drawer .search-box{width:100%;margin-bottom:18px}
.drawer-actions{display:flex;flex-direction:column;gap:12px}
.overlay{
  position:fixed;inset:0;background:rgba(6,3,18,.6);opacity:0;visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;z-index:85;
}
.overlay.is-open{opacity:1;visibility:visible}

/* ---------- hero ---------- */
.hero{position:relative;padding:76px 0 82px;overflow:hidden}
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none}
.hero-glow-a{width:520px;height:520px;background:radial-gradient(circle,rgba(108,76,241,.42),transparent 68%);top:-160px;left:-120px}
.hero-glow-b{width:460px;height:460px;background:radial-gradient(circle,rgba(31,224,196,.24),transparent 68%);bottom:-180px;right:-100px}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;align-items:center;position:relative;z-index:2;
}
.hero-copy{max-width:560px}
.hero h1{font-size:44px;line-height:1.25;margin-bottom:16px}
.hero-sub{font-size:20px;font-weight:600;color:var(--brand-2);line-height:1.45;margin-bottom:16px}
.hero-lead{color:var(--ink-2);font-size:16.5px;line-height:1.85;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px}
.hero-points li{
  display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 14px;background:rgba(255,255,255,.03);
}
.hero-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-2)}
.hero-visual{position:relative}
.hero-figure{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-1);background:linear-gradient(135deg,rgba(108,76,241,.4),rgba(31,224,196,.28));
}
.hero-figure img{width:100%;height:400px;object-fit:cover}
.stat-float{
  position:absolute;right:-14px;bottom:-18px;
  display:flex;flex-direction:column;gap:2px;
  background:var(--panel-2);border:1px solid var(--line-strong);border-radius:var(--r-md);
  padding:16px 22px;box-shadow:var(--sh-1);transition:border-color .25s ease;
}
.stat-float:hover{border-color:var(--brand-2)}
.stat-num{font-size:30px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-label{font-size:12.5px;color:var(--ink-2);white-space:nowrap}

/* ---------- cards & features ---------- */
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--sh-2)}
.card-title{font-size:18px;margin-bottom:10px;line-height:1.45}
.card-text{font-size:14.5px;color:var(--ink-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px}
.card-media{border-radius:var(--r-md);overflow:hidden;margin-bottom:20px;background:linear-gradient(135deg,rgba(108,76,241,.35),rgba(31,224,196,.25))}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease}
.card:hover .card-media img{transform:scale(1.03)}

.feature-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.feature-main{display:flex;flex-direction:column;padding:0;overflow:hidden}
.feature-main .card-media{border-radius:0;margin:0;aspect-ratio:16/9}
.feature-main-body{padding:26px 26px 28px}
.feature-main h3{font-size:22px;margin-bottom:12px}
.feature-main p{color:var(--ink-2);font-size:15px;margin-bottom:18px}
.feature-side{display:flex;flex-direction:column;gap:24px}
.feature-small{flex:1;display:flex;flex-direction:column;justify-content:center}
.feature-small .tag{margin-bottom:12px}
.feature-small h3{font-size:18px;margin-bottom:10px}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(108,76,241,.5);
  background:rgba(108,76,241,.16);color:#C9BCFF;
}
.tag-warm{border-color:rgba(255,138,61,.5);background:rgba(255,138,61,.14);color:#FFC39A}

/* ---------- metrics ---------- */
.metrics-grid{display:grid;grid-template-columns:1fr 360px;gap:32px;align-items:center}
.metrics-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.metric{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 20px;transition:border-color .25s ease,transform .25s ease;
}
.metric:hover{border-color:var(--brand-2);transform:translateY(-3px)}
.metric-num{
  font-size:34px;font-weight:800;line-height:1.15;font-variant-numeric:tabular-nums;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  display:block;margin-bottom:6px;
}
.metric-label{font-size:13.5px;color:var(--ink-2);line-height:1.6}
.compare{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;
}
.compare h3{font-size:16px;margin-bottom:18px;color:var(--ink)}
.compare-item{margin-bottom:18px}
.compare-item:last-child{margin-bottom:0}
.compare-top{display:flex;justify-content:space-between;font-size:13px;color:var(--ink-2);margin-bottom:8px}
.compare-top b{color:var(--ink);font-variant-numeric:tabular-nums}
.bar{height:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.07);overflow:hidden}
.bar span{display:block;height:100%;border-radius:var(--r-pill);background:var(--grad)}
.bar-warm span{background:var(--grad-warm)}

/* ---------- cases ---------- */
.case-list{display:flex;flex-direction:column;gap:32px}
.case-row{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;transition:border-color .25s ease,transform .25s ease;
}
.case-row:hover{border-color:var(--brand);transform:translateY(-3px)}
.case-row.reverse .case-media{order:2}
.case-media{border-radius:var(--r-md);overflow:hidden;aspect-ratio:4/3;background:linear-gradient(135deg,rgba(108,76,241,.35),rgba(31,224,196,.25))}
.case-media img{width:100%;height:100%;object-fit:cover}
.case-body h3{font-size:21px;margin:14px 0 10px}
.case-body p{color:var(--ink-2);font-size:15px;margin-bottom:16px}

/* ---------- plans ---------- */
.plans-wrap{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}
.plans{display:flex;flex-direction:column;gap:20px}
.plan-step{
  position:relative;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:26px 26px 26px 92px;transition:border-color .25s ease,transform .25s ease;
}
.plan-step:hover{border-color:var(--brand-2);transform:translateY(-3px)}
.plan-step.is-active{border-color:var(--brand);box-shadow:var(--sh-3);transform:translateY(-8px)}
.plan-num{
  position:absolute;left:26px;top:26px;
  width:44px;height:44px;border-radius:14px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:16px;color:#fff;font-variant-numeric:tabular-nums;
}
.plan-step h3{font-size:19px;margin-bottom:10px}
.plan-step p{color:var(--ink-2);font-size:15px;margin:0}
.plan-index{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;position:sticky;top:100px;
}
.plan-index h3{font-size:16px;margin-bottom:16px}
.plan-index li{
  display:flex;align-items:center;gap:12px;padding:11px 0;
  border-bottom:1px solid var(--line);font-size:14.5px;color:var(--ink-2);
}
.plan-index li:last-child{border-bottom:0}
.plan-index li b{color:var(--brand-2);font-variant-numeric:tabular-nums;font-weight:700}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-feature{
  grid-column:1/-1;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:0;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;transition:border-color .25s ease,transform .25s ease;
}
.news-feature:hover{border-color:var(--brand);transform:translateY(-4px)}
.news-feature-media{background:linear-gradient(135deg,rgba(108,76,241,.35),rgba(31,224,196,.25));min-height:280px}
.news-feature-media img{width:100%;height:100%;object-fit:cover}
.news-feature-body{padding:30px;display:flex;flex-direction:column;justify-content:center}
.news-feature-body h3{font-size:24px;line-height:1.4;margin:14px 0 12px}
.news-feature-body p{color:var(--ink-2);font-size:15px}
.news-card{display:flex;flex-direction:column;padding:0;overflow:hidden}
.news-card .card-media{border-radius:0;margin:0;aspect-ratio:16/9}
.news-card-body{padding:22px;display:flex;flex-direction:column;flex:1}
.news-card-body h3{font-size:17px;line-height:1.5;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card-body p{font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:#8E85B5;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  background:var(--panel);border:1px dashed var(--line-strong);border-radius:var(--r-lg);
}
.empty-art{
  width:76px;height:76px;margin:0 auto 18px;border-radius:22px;
  background:var(--grad);opacity:.85;
  clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);
}
.empty-state p{color:var(--ink-2);margin-bottom:18px}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start}
.faq-intro h2{font-size:32px;margin-bottom:16px}
.faq-intro p{color:var(--ink-2);font-size:15px}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .25s ease;
}
.faq-item.is-open{border-color:var(--brand)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-icon{
  flex-shrink:0;width:28px;height:28px;border-radius:9px;
  border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;
  font-size:16px;color:var(--ink-2);transition:transform .25s ease,border-color .25s ease,color .25s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:var(--brand);color:var(--brand-2)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{
  padding:0 22px 22px;font-size:15px;line-height:1.9;color:var(--ink-2);
}

/* ---------- cta bar ---------- */
.cta-bar{position:relative;overflow:hidden;padding:60px 0}
.cta-glow{position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(108,76,241,.35),transparent 68%);top:-160px;left:40%;filter:blur(80px);pointer-events:none}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:linear-gradient(120deg,rgba(108,76,241,.9),rgba(31,224,196,.75));
  border-radius:var(--r-lg);padding:34px 40px;box-shadow:var(--sh-1);flex-wrap:wrap;
}
.cta-inner h2{font-size:26px;margin:0 0 6px;color:#fff}
.cta-inner p{margin:0;font-size:14.5px;color:rgba(255,255,255,.88)}
.cta-inner .btn{background:#0E0820;color:#fff;box-shadow:0 10px 24px rgba(9,4,26,.4)}
.cta-inner .btn:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(9,4,26,.5)}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:32px;align-items:start}
.form-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px}
.form-card h2{font-size:26px;margin-bottom:10px}
.form-card > p{color:var(--ink-2);font-size:15px;margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;color:var(--ink-2);margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:12px;padding:0 16px;height:48px;font-size:15px;color:var(--ink);
  outline:none;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{height:auto;min-height:140px;padding:14px 16px;line-height:1.8;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#7C729F}
.field input:focus,.field textarea:focus,.field select:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.28);background:rgba(255,255,255,.06);
}
.field.has-error input,.field.has-error textarea{border-color:var(--danger)}
.field-error{display:none;font-size:13px;color:var(--danger);margin-top:6px}
.field.has-error .field-error{display:block}
.form-note{font-size:13px;color:var(--ink-2)}
.form-ok{
  display:none;margin-top:16px;padding:13px 16px;border-radius:12px;font-size:14px;
  border:1px solid rgba(36,208,122,.5);background:rgba(36,208,122,.12);color:#8FF0BE;
}
.form-ok.is-show{display:block}
.info-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px}
.info-card h3{font-size:18px;margin-bottom:20px}
.info-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.info-item:last-child{border-bottom:0;padding-bottom:0}
.info-icon{
  flex-shrink:0;width:40px;height:40px;border-radius:12px;
  background:rgba(108,76,241,.16);border:1px solid rgba(108,76,241,.4);
  display:flex;align-items:center;justify-content:center;
}
.info-icon svg{width:18px;height:18px;color:var(--brand-2)}
.info-item strong{display:block;font-size:15px;margin-bottom:4px}
.info-item span{font-size:13.5px;color:var(--ink-2);line-height:1.7}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:60px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:minmax(0,4fr) repeat(3,minmax(0,2.4fr));gap:40px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--ink-2);max-width:320px;line-height:1.8}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--ink-2)}
.footer-col a:hover{color:var(--brand-2)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8E85B5;
}
.footer-bottom .sep{color:#4B4370}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .hero h1{font-size:38px}
  .hero-figure img{height:340px}
  .metrics-grid{grid-template-columns:1fr;gap:24px}
  .plans-wrap{grid-template-columns:1fr 260px;gap:28px}
  .footer-grid{grid-template-columns:minmax(0,3fr) repeat(3,minmax(0,2.4fr));gap:32px}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .search-box{width:200px}
  .hero{padding:56px 0 68px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-copy{max-width:none}
  .hero-visual{order:-1}
  .hero-figure img{height:320px}
  .feature-grid{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .contact-grid{grid-template-columns:1fr}
  .plans-wrap{grid-template-columns:1fr}
  .plan-index{position:static}
  .metrics-row{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  body{font-size:16px}
  .section{padding:44px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:26px}
  .section-head h2,.faq-intro h2{font-size:24px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:18px}
  .hero-figure img{height:250px}
  .stat-float{right:8px;bottom:-16px;padding:12px 18px}
  .stat-num{font-size:24px}
  .nav-actions .search-box{display:none}
  .nav-actions .btn-ghost{display:none}
  .case-row{grid-template-columns:1fr;gap:20px}
  .case-row.reverse .case-media{order:0}
  .news-grid{grid-template-columns:1fr}
  .news-feature{grid-template-columns:1fr}
  .news-feature-media{min-height:210px;aspect-ratio:16/9}
  .news-feature-body{padding:22px}
  .news-feature-body h3{font-size:20px}
  .cta-inner{padding:26px 22px;flex-direction:column;align-items:flex-start}
  .cta-inner h2{font-size:21px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .plan-step{padding:22px 20px 22px 20px}
  .plan-num{position:static;margin-bottom:14px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero{padding:44px 0 52px}
  .metrics-row{grid-template-columns:1fr 1fr;gap:14px}
  .metric{padding:18px 16px}
  .metric-num{font-size:26px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .btn{height:46px}
  .btn-lg{height:48px;padding:0 22px;font-size:15px}
}
@media (max-width:480px){
  .section{padding:36px 0}
  .hero h1{font-size:27px}
  .hero-actions{gap:10px}
  .hero-points{gap:8px}
  .card{padding:20px}
  .form-card,.info-card{padding:22px}
}

/* roulang page: article */
:root{
  --primary:#6C4CF1;
  --primary-deep:#5538D6;
  --accent:#1FE0C4;
  --warm:#FF8A3D;
  --pink:#FF4D8D;
  --danger:#FF5B7A;
  --success:#24D07A;
  --bg:#0E0820;
  --panel:#17112E;
  --panel-2:#1E1740;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#F4F2FF;
  --muted:#B4AAD8;
  --light:#F7F5FF;
  --text-dark:#241C3D;
  --text-dark-soft:#4A4166;
  --grad:linear-gradient(135deg,#6C4CF1 0%,#1FE0C4 100%);
  --grad-warm:linear-gradient(135deg,#FF8A3D 0%,#FF4D8D 100%);
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-1:0 8px 24px rgba(9,4,26,.45);
  --shadow-2:0 16px 40px rgba(108,76,241,.28);
  --shadow-3:0 0 0 1px rgba(108,76,241,.5);
  --gap:24px;
  --section:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:44px;line-height:1.25;font-weight:800;letter-spacing:-.01em}
h2{font-size:32px;line-height:1.3;font-weight:800}
h3{font-size:20px;line-height:1.45;font-weight:700}
p+p{margin-top:.9em}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--section) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head p{color:var(--muted);font-size:15px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);letter-spacing:.08em;text-transform:uppercase;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--grad);border-radius:2px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(14,8,32,.72);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{background:rgba(11,6,26,.96);border-bottom-color:var(--line);box-shadow:0 10px 30px rgba(6,2,18,.5)}
.nav-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--grad);
  display:grid;place-items:center;box-shadow:0 6px 18px rgba(108,76,241,.4)
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.22em}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{
  position:relative;padding:10px 14px;border-radius:var(--radius-pill);
  font-size:15px;color:var(--muted);transition:color .2s ease,background .2s ease
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--grad)
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:0 14px;height:42px;width:224px;transition:border-color .2s ease,box-shadow .2s ease
}
.search-box svg{width:16px;height:16px;color:var(--muted);flex:0 0 auto}
.search-box input{background:transparent;border:0;outline:none;width:100%;font-size:14px}
.search-box input::placeholder{color:rgba(180,170,216,.75)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(108,76,241,.25)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);padding:12px 22px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(108,76,241,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:#fff;background:rgba(108,76,241,.12)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-size:14.5px;font-weight:600}
.btn-text svg{width:15px;height:15px;transition:transform .2s ease}
.btn-text:hover svg{transform:translateX(4px)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;background:var(--panel-2);
  border:1px solid var(--line);cursor:pointer;position:relative
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--text);transform:translateX(-50%)
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none}

/* ---------- 页头信息 ---------- */
.page-head{
  position:relative;padding:44px 0 12px;overflow:hidden;
}
.page-head::before,.page-head::after{content:"";position:absolute;border-radius:50%;pointer-events:none}
.page-head::before{width:420px;height:420px;top:-220px;left:-120px;background:radial-gradient(circle,rgba(108,76,241,.35),transparent 68%)}
.page-head::after{width:360px;height:360px;top:-180px;right:-100px;background:radial-gradient(circle,rgba(31,224,196,.22),transparent 68%)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);flex-wrap:wrap;position:relative;z-index:1}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:rgba(180,170,216,.75);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{position:relative;z-index:1;margin-top:22px;max-width:900px}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;letter-spacing:.04em;color:var(--accent);
  background:rgba(31,224,196,.1);border:1px solid rgba(31,224,196,.28)
}
.tag-warm{color:#FFD3B0;background:rgba(255,138,61,.12);border-color:rgba(255,138,61,.3)}
.article-title{margin-top:16px;font-size:42px;line-height:1.28}
.meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px 20px;margin-top:20px;font-size:13px;color:var(--muted)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(180,170,216,.5)}
.meta-row strong{color:var(--text);font-weight:600}

/* ---------- 正文布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 318px;gap:40px;padding-bottom:var(--section)}
.article-main{min-width:0}
.cover-wrap{
  border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
  background:var(--panel);box-shadow:var(--shadow-1)
}
.cover-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-body{
  margin-top:28px;background:var(--light);color:var(--text-dark);
  border-radius:var(--radius-lg);padding:52px 56px;font-size:17px;line-height:1.9
}
.article-body h2{font-size:26px;line-height:1.4;color:#1B1436;margin:38px 0 14px;padding-left:14px;position:relative}
.article-body h2::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:4px;background:var(--grad)}
.article-body h3{font-size:19px;color:#2A2150;margin:26px 0 10px}
.article-body p{margin:0 0 .95em}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:0}
.article-body li{position:relative;padding-left:22px;margin-bottom:8px;color:var(--text-dark-soft)}
.article-body ul li::before{content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--primary)}
.article-body ol{counter-reset:ol}
.article-body ol li{counter-increment:ol}
.article-body ol li::before{
  content:counter(ol);position:absolute;left:0;top:.18em;font-size:12px;font-weight:800;color:#fff;
  background:var(--primary);width:16px;height:16px;border-radius:50%;display:grid;place-items:center
}
.article-body blockquote{
  margin:22px 0;padding:16px 22px;border-left:3px solid;border-image:var(--grad) 1;
  background:rgba(108,76,241,.07);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:#3B3160;font-size:16px
}
.article-body img{border-radius:var(--radius-md);margin:18px 0}
.article-body a{color:var(--primary-deep);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#3E28B8}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;background:#fff;border-radius:var(--radius-sm);overflow:hidden}
.article-body th,.article-body td{border:1px solid #E4DFF7;padding:11px 14px;text-align:left}
.article-body th{background:#EFEBFF;color:#2A2150;font-weight:700}
.article-body tbody tr:nth-child(even){background:#FAF8FF}
.article-body hr{border:0;border-top:1px solid #E4DFF7;margin:28px 0}
.callout{margin:20px 0;padding:15px 18px 15px 20px;border-radius:var(--radius-sm);font-size:15.5px;border-left:3px solid}
.callout.info{background:rgba(108,76,241,.09);border-color:var(--primary);color:#332A5C}
.callout.warn{background:rgba(255,138,61,.12);border-color:var(--warm);color:#6C3A12}
.callout.ok{background:rgba(36,208,122,.12);border-color:var(--success);color:#125C39}
.empty-state{
  margin-top:28px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:56px 32px;text-align:center
}
.empty-art{width:96px;height:96px;margin:0 auto 20px;border-radius:28px;background:var(--grad);opacity:.85;
  display:grid;place-items:center}
.empty-art svg{width:44px;height:44px;color:#fff}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;align-items:center}
.tag-row .label{font-size:13px;color:var(--muted);margin-right:4px}
.tag-chip{
  padding:7px 14px;border-radius:var(--radius-pill);font-size:13px;color:var(--muted);
  border:1px solid var(--line);background:var(--panel);transition:all .2s ease
}
.tag-chip:hover{color:var(--text);border-color:var(--primary);background:rgba(108,76,241,.14)}

/* ---------- 侧栏 ---------- */
.side{position:sticky;top:96px;align-self:start;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:4px;background:var(--grad)}
.side-list li+li{margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.side-list a{display:block;font-size:14.5px;font-weight:600;line-height:1.6;transition:color .2s ease}
.side-list a:hover{color:var(--accent)}
.side-list span{display:block;font-size:12.5px;color:var(--muted);margin-top:6px}
.side-note{font-size:13px;color:var(--muted);line-height:1.8}
.side-cta{background:linear-gradient(150deg,#231A4C,#17112E);border:1px solid rgba(31,224,196,.24)}
.side-cta p{font-size:13.5px;color:var(--muted);margin-bottom:16px}

/* ---------- 相关推荐 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease
}
.card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow-2)}
.card-thumb{overflow:hidden;background:linear-gradient(135deg,rgba(108,76,241,.5),rgba(31,224,196,.35))}
.card-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .25s ease}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.5}
.card-body p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{font-size:12.5px;color:rgba(180,170,216,.8);margin-top:auto;display:flex;gap:12px;align-items:center}

/* ---------- 上下篇 ---------- */
.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap);margin-top:34px}
.pager a{
  display:flex;flex-direction:column;gap:8px;padding:20px 22px;border-radius:var(--radius-md);
  background:var(--panel);border:1px solid var(--line);transition:all .22s ease
}
.pager a:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:var(--shadow-2)}
.pager small{font-size:12.5px;color:var(--muted);letter-spacing:.06em}
.pager strong{font-size:15.5px;font-weight:600;line-height:1.6}
.pager .next{text-align:right;align-items:flex-end}
.back-row{margin-top:30px;display:flex;justify-content:center}

/* ---------- CTA 条 ---------- */
.cta-band{
  margin-top:12px;border-radius:var(--radius-lg);padding:32px 36px;
  background:linear-gradient(120deg,rgba(108,76,241,.9),rgba(31,224,196,.75));
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  box-shadow:0 20px 48px rgba(108,76,241,.28)
}
.cta-band h2{font-size:24px;color:#0E0820}
.cta-band p{color:rgba(14,8,32,.78);font-size:14.5px;margin-top:6px}
.cta-band .btn{background:#150C33;color:#fff;box-shadow:0 10px 24px rgba(9,4,26,.4)}
.cta-band .btn:hover{transform:translateY(-2px)}
.cta-band .btn-ghost{border-color:rgba(14,8,32,.35);color:#150C33;background:transparent}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.28);border-color:rgba(14,8,32,.4)}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:#0B0619;padding:56px 0 26px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:16px;max-width:340px;line-height:1.85}
.footer-col h4{font-size:15px;margin-bottom:16px;font-weight:700}
.footer-col li+li{margin-top:10px}
.footer-col a{font-size:14px;color:var(--muted);transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:rgba(180,170,216,.8)
}
.footer-bottom .sep{opacity:.45}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:28px}
  .article-title{font-size:36px}
  h1{font-size:38px}
}
@media (max-width:1024px){
  :root{--section:56px}
  .nav-toggle{display:block}
  .nav-links{
    position:fixed;top:72px;right:0;bottom:0;width:min(320px,84vw);
    background:rgba(12,7,28,.99);border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:4px;padding:22px 20px;margin:0;
    transform:translateX(103%);transition:transform .3s cubic-bezier(.4,0,.2,1);overflow-y:auto
  }
  .nav-link{padding:13px 14px;border-radius:var(--radius-sm)}
  .nav-link.is-active::after{display:none}
  .nav-link.is-active{background:rgba(108,76,241,.18)}
  .site-header.nav-open .nav-links{transform:translateX(0)}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .side{position:static}
  .article-body{padding:40px 36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--section:40px;--gap:18px}
  h1{font-size:30px}
  h2{font-size:24px}
  .nav-inner{height:64px;gap:14px}
  .nav-links{top:64px}
  .search-box{display:none}
  .page-head{padding:30px 0 8px}
  .article-title{font-size:27px}
  .article-body{padding:28px 20px;font-size:16px;border-radius:var(--radius-md)}
  .article-body h2{font-size:21px}
  .related-grid{grid-template-columns:1fr}
  .pager{grid-template-columns:1fr}
  .pager .next{text-align:left;align-items:flex-start}
  .cta-band{padding:24px 22px}
  .cta-band h2{font-size:20px}
  .footer-grid{grid-template-columns:1fr}
  .breadcrumb .current{max-width:200px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-text em{display:none}
  .nav-actions .btn-ghost{display:none}
  .article-title{font-size:24px}
  .meta-row{gap:8px 14px}
  .cover-wrap img{aspect-ratio:4/3}
  .empty-state{padding:38px 20px}
}

/* roulang page: category1 */
:root{
  --brand:#6C4CF1;
  --brand-2:#1FE0C4;
  --accent:#FF8A3D;
  --danger:#FF5B7A;
  --success:#24D07A;

  --bg:#0E0820;
  --panel:#17112E;
  --panel-2:#1E1740;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --light:#F7F5FF;

  --text:#F4F2FF;
  --muted:#B4AAD8;
  --ink:#241C3D;
  --ink-soft:#4A4166;

  --grad-brand:linear-gradient(135deg,#6C4CF1 0%,#1FE0C4 100%);
  --grad-warm:linear-gradient(135deg,#FF8A3D 0%,#FF4D8D 100%);

  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;

  --sh-1:0 8px 24px rgba(9,4,26,.45);
  --sh-2:0 16px 40px rgba(108,76,241,.28);
  --sh-ring:0 0 0 1px rgba(108,76,241,.5);

  --container:1200px;
  --gap:24px;
  --sec:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,opacity .2s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
p{margin-bottom:.9em;}
h1,h2,h3,h4{font-weight:800;letter-spacing:.2px;}
button,input,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
svg{display:block;max-width:100%;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--sec) 0;position:relative;}
.section-head{margin-bottom:32px;max-width:760px;}
.section-head h2{font-size:32px;line-height:1.3;}
.section-head p{color:var(--muted);font-size:15.5px;margin-top:12px;margin-bottom:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:1.5px;
  color:var(--brand-2);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--grad-brand);border-radius:2px;}
.mono{font-family:Inter,"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(14,8,32,.72);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(14,8,32,.96);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(6,2,18,.5);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad-brand);
  display:grid;place-items:center;box-shadow:var(--sh-1);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.5px;}
.brand-text em{font-size:11px;font-style:normal;color:var(--muted);letter-spacing:2.4px;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px;}
.nav-link{
  position:relative;padding:10px 14px;border-radius:var(--r-pill);
  font-size:15px;color:var(--muted);font-weight:600;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--grad-brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:42px;padding:0 14px;min-width:230px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-pill);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box svg{width:17px;height:17px;color:var(--muted);flex-shrink:0;}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:#7E76A6;}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.22);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--panel);position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--text);border-radius:2px;
  transform:translateX(-50%);transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:700;letter-spacing:.3px;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,border-color .2s ease,opacity .2s ease;
  white-space:nowrap;
}
.btn svg{width:17px;height:17px;}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line-strong);}
.btn-ghost:hover{border-color:var(--brand);color:#fff;background:rgba(108,76,241,.14);}
.btn-ghost:active{transform:translateY(1px);}
.btn-light{background:var(--light);color:var(--ink);}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(9,4,26,.35);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand-2);
  font-weight:700;font-size:15px;
}
.btn-text svg{width:16px;height:16px;transition:transform .22s ease;}
.btn-text:hover svg{transform:translateX(4px);}
.btn-sm{height:42px;padding:0 20px;font-size:14.5px;}
.btn-block{width:100%;}

/* ---------- hero ---------- */
.channel-hero{
  position:relative;overflow:hidden;padding:64px 0 56px;
  background-color:var(--bg);
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
}
.channel-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,8,32,.96) 0%,rgba(14,8,32,.88) 48%,rgba(14,8,32,.62) 100%);
}
.channel-hero::after{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:-200px;
  background:radial-gradient(circle,rgba(31,224,196,.26),transparent 65%);
  filter:blur(8px);pointer-events:none;
}
.hero-orb{
  position:absolute;left:-160px;bottom:-240px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(108,76,241,.34),transparent 66%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap;}
.breadcrumb a:hover{color:var(--brand-2);}
.breadcrumb span.current{color:#7E76A6;}
.breadcrumb svg{width:13px;height:13px;opacity:.6;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;
  border-radius:var(--r-pill);border:1px solid rgba(108,76,241,.45);
  background:linear-gradient(135deg,rgba(108,76,241,.24),rgba(31,224,196,.14));
  font-size:13px;font-weight:700;color:#D9D2FF;margin-bottom:18px;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 10px var(--brand-2);}
.channel-hero h1{font-size:44px;line-height:1.25;max-width:820px;}
.channel-hero h1 .hl{
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;color:var(--muted);max-width:640px;margin-top:18px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:36px;}
.hero-meta-item{display:flex;flex-direction:column;gap:2px;}
.hero-meta-item b{font-size:30px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.1;}
.hero-meta-item span{font-size:13px;color:var(--muted);}
.hero-meta-item b.c-cyan{color:var(--brand-2);}
.hero-meta-item b.c-orange{color:var(--accent);}

/* ---------- channel tabs + filters ---------- */
.toolbar{
  position:relative;z-index:3;
  background:var(--panel);border-bottom:1px solid var(--line);
}
.toolbar-inner{padding-top:14px;padding-bottom:14px;}
.tabs{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none;}
.tabs::-webkit-scrollbar{display:none;}
.tab{
  flex:0 0 auto;padding:9px 20px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--panel-2);
  font-size:14.5px;font-weight:700;color:var(--muted);
  transition:all .22s ease;
}
.tab:hover{color:var(--text);border-color:var(--line-strong);}
.tab.is-active{background:var(--grad-brand);color:#fff;border-color:transparent;box-shadow:var(--sh-1);}
.filters{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:14px;}
.filters .filter-label{font-size:13px;color:#7E76A6;margin-right:2px;}
.chip{
  padding:6px 15px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:transparent;
  font-size:13.5px;color:var(--muted);font-weight:600;
  transition:all .2s ease;
}
.chip:hover{color:var(--text);border-color:var(--line-strong);}
.chip.is-active{color:#0E0820;background:var(--brand-2);border-color:var(--brand-2);font-weight:700;}

/* ---------- two column layout ---------- */
.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 344px;
  gap:32px;
  align-items:start;
}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:12px;bottom:12px;width:1px;
  background:linear-gradient(180deg,rgba(108,76,241,.7),rgba(31,224,196,.35),rgba(255,255,255,.05));
}
.tl-item{
  position:relative;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;margin-bottom:20px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:32px;width:11px;height:11px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 4px rgba(108,76,241,.2),0 0 14px rgba(108,76,241,.8);
}
.tl-item.is-now::before{background:var(--brand-2);box-shadow:0 0 0 4px rgba(31,224,196,.18),0 0 16px rgba(31,224,196,.9);}
.tl-item:hover{transform:translateY(-4px);border-color:rgba(108,76,241,.55);box-shadow:var(--sh-2);}
.tl-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:12px;}
.tl-time{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:700;color:var(--brand-2);
  font-variant-numeric:tabular-nums;letter-spacing:.4px;
}
.tl-time svg{width:14px;height:14px;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;letter-spacing:.4px;
  border:1px solid var(--line);background:var(--panel-2);color:var(--muted);
}
.tag.tag-brand{border-color:rgba(108,76,241,.5);color:#CFC6FF;background:rgba(108,76,241,.16);}
.tag.tag-cyan{border-color:rgba(31,224,196,.42);color:#9FF3E5;background:rgba(31,224,196,.12);}
.tag.tag-warm{
  border-color:transparent;color:#fff;
  background:var(--grad-warm);
}
.tl-item h3{font-size:20px;line-height:1.45;margin-bottom:8px;}
.tl-item p{color:var(--muted);font-size:15px;margin-bottom:16px;}
.tl-foot{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:16px;border-top:1px solid var(--line);flex-wrap:wrap;
}
.tl-server{font-size:13.5px;color:#7E76A6;}
.tl-server b{color:var(--text);font-weight:700;}

/* ---------- sticky side ---------- */
.side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:17px;margin-bottom:6px;}
.side-card .side-desc{font-size:13.5px;color:var(--muted);margin-bottom:18px;}
.side-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:18px;}
.side-stat{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-md);
  padding:14px;
}
.side-stat b{display:block;font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.15;}
.side-stat span{font-size:12.5px;color:var(--muted);}
.side-cover{
  border-radius:var(--r-md);overflow:hidden;margin-bottom:18px;
  background:var(--grad-brand);aspect-ratio:16/9;
}
.side-cover img{width:100%;height:100%;object-fit:cover;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--muted);
  padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.07);
}
.check-list li:last-child{border-bottom:0;}
.check-list svg{width:17px;height:17px;color:var(--success);flex-shrink:0;margin-top:4px;}
.quick-links li+li{margin-top:4px;}
.quick-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 14px;border-radius:var(--r-md);border:1px solid var(--line);
  font-size:14.5px;font-weight:600;color:var(--muted);
}
.quick-links a:hover{border-color:rgba(108,76,241,.55);color:var(--text);background:rgba(108,76,241,.1);}
.quick-links svg{width:15px;height:15px;transition:transform .2s ease;}
.quick-links a:hover svg{transform:translateX(4px);}
.sub-form{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.field{
  height:48px;padding:0 16px;border-radius:12px;
  background:#120C28;border:1px solid var(--line);color:var(--text);
  font-size:14.5px;outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.field::placeholder{color:#6F6796;}
.field:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.25);}
.form-tip{font-size:13px;color:#7E76A6;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.step-card{
  position:relative;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 24px 24px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(108,76,241,.55);box-shadow:var(--sh-2);}
.step-num{
  position:absolute;top:-16px;left:24px;
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:var(--grad-brand);color:#fff;font-weight:800;font-size:15px;
  box-shadow:var(--sh-1);font-variant-numeric:tabular-nums;
}
.step-card h3{font-size:18px;margin:14px 0 10px;}
.step-card p{font-size:14.5px;color:var(--muted);margin-bottom:0;}
.step-card .step-note{
  display:block;margin-top:16px;font-size:13px;color:var(--brand-2);font-weight:700;
}

/* ---------- faq (light) ---------- */
.faq-section{padding:var(--sec) 0;}
.faq-shell{
  background:var(--light);border-radius:32px;padding:56px 48px;
  color:var(--ink);box-shadow:0 24px 60px rgba(9,4,26,.5);
}
.faq-grid{display:grid;grid-template-columns:0.85fr 1.15fr;gap:48px;align-items:start;}
.faq-intro h2{font-size:32px;line-height:1.3;color:var(--ink);}
.faq-intro p{color:var(--ink-soft);font-size:15.5px;margin-top:14px;}
.faq-intro .btn{margin-top:10px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;border:1px solid rgba(36,28,61,.1);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{border-color:rgba(108,76,241,.4);}
.faq-item[open]{border-color:rgba(108,76,241,.75);box-shadow:0 10px 26px rgba(108,76,241,.14);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{
  position:relative;flex-shrink:0;width:22px;height:22px;transition:transform .25s ease;
}
.faq-item summary .plus::before,.faq-item summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-item summary .plus::before{width:14px;height:2px;}
.faq-item summary .plus::after{width:2px;height:14px;}
.faq-item[open] summary .plus{transform:rotate(45deg);}
.faq-body{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--ink-soft);}

/* ---------- cta strip ---------- */
.cta-strip{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(120deg,#2A1C61 0%,#1B1440 55%,#123A3C 100%);
  border:1px solid rgba(108,76,241,.4);
  padding:32px 36px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-strip::after{
  content:"";position:absolute;right:-80px;top:-120px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(31,224,196,.3),transparent 65%);pointer-events:none;
}
.cta-strip h2{font-size:24px;position:relative;z-index:2;}
.cta-strip p{font-size:14.5px;color:var(--muted);margin:6px 0 0;position:relative;z-index:2;}
.cta-strip .btn{position:relative;z-index:2;}

/* ---------- footer ---------- */
.site-footer{background:#0A0518;border-top:1px solid var(--line);padding:56px 0 0;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand p{color:var(--muted);font-size:14.5px;margin-top:16px;max-width:340px;}
.footer-brand .brand{margin-bottom:4px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text);letter-spacing:.6px;}
.footer-col li+li{margin-top:10px;}
.footer-col a{color:var(--muted);font-size:14.5px;}
.footer-col a:hover{color:var(--brand-2);}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:13.5px;color:#7E76A6;
}
.footer-bottom .sep{opacity:.4;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .layout{grid-template-columns:minmax(0,1fr) 300px;gap:24px;}
  .channel-hero h1{font-size:38px;}
  .section-head h2,.faq-intro h2{font-size:28px;}
}
@media (max-width:1024px){
  .nav-links{
    position:fixed;top:72px;right:0;bottom:0;width:290px;
    flex-direction:column;align-items:stretch;gap:4px;margin:0;padding:22px;
    background:#120C28;border-left:1px solid var(--line);
    transform:translateX(102%);transition:transform .3s ease;z-index:90;
    box-shadow:-20px 0 50px rgba(4,1,14,.6);
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-link{padding:14px 16px;font-size:16px;border-radius:var(--r-md);}
  .nav-link::after{display:none;}
  .nav-link.is-active{background:rgba(108,76,241,.18);color:#fff;}
  .nav-toggle{display:block;}
  .search-box{min-width:0;width:210px;}
  .layout{grid-template-columns:1fr;}
  .side{position:static;}
  .steps{grid-template-columns:1fr;}
  .faq-shell{padding:40px 28px;}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .nav-inner{height:64px;gap:14px;}
  .nav-links{top:64px;}
  .search-box{width:44px;padding:0;justify-content:center;border-radius:50%;}
  .search-box input{display:none;}
  .btn-sm{padding:0 16px;}
  .nav-actions .btn-ghost{display:none;}
  .channel-hero{padding:40px 0 36px;background-position:center;}
  .channel-hero h1{font-size:30px;}
  .hero-sub{font-size:15.5px;}
  .hero-meta{gap:20px;}
  .hero-meta-item b{font-size:24px;}
  .timeline{padding-left:26px;}
  .tl-item{padding:20px;}
  .tl-item::before{left:-24px;top:26px;}
  .cta-strip{padding:24px;flex-direction:column;align-items:flex-start;}
  .cta-strip h2{font-size:20px;}
  .faq-shell{border-radius:24px;padding:30px 20px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:480px){
  .hero-actions .btn{width:100%;}
  .side-stats{grid-template-columns:1fr 1fr;}
  .tl-item h3{font-size:17px;}
}

/* roulang page: category2 */
:root{
  --brand:#6C4CF1;
  --brand-2:#1FE0C4;
  --accent:#FF8A3D;
  --danger:#FF5B7A;
  --success:#24D07A;
  --bg:#0E0820;
  --panel:#17112E;
  --panel-2:#1E1740;
  --line:rgba(255,255,255,.08);
  --text:#F4F2FF;
  --text-2:#B4AAD8;
  --read-bg:#F7F5FF;
  --read-text:#241C3D;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(9,4,26,.45);
  --sh-2:0 16px 40px rgba(108,76,241,.28);
  --grad:linear-gradient(135deg,#6C4CF1 0%,#1FE0C4 100%);
  --grad-warm:linear-gradient(135deg,#FF8A3D 0%,#FF4D8D 100%);
  --container:1200px;
  --ease:.25s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.2px}
p{margin:0 0 .9em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;line-height:1;white-space:nowrap;
  border:1px solid transparent;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease),background-color var(--ease);
}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(108,76,241,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 14px rgba(108,76,241,.28)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-2);font-weight:700;font-size:15px}
.btn-link svg{width:16px;height:16px;transition:transform var(--ease)}
.btn-link:hover svg{transform:translateX(4px)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;box-shadow:none}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(14,8,32,.72);
  border-bottom:1px solid transparent;
  transition:background-color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{background:rgba(12,6,28,.96);border-bottom-color:var(--line);box-shadow:0 10px 30px rgba(5,2,16,.55)}
.nav-inner{display:flex;align-items:center;gap:28px;height:74px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);
  display:grid;place-items:center;box-shadow:0 6px 18px rgba(108,76,241,.38);flex-shrink:0;
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16.5px;font-weight:800;letter-spacing:.4px}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--text-2);letter-spacing:2px}
.nav-links{display:flex;align-items:center;gap:6px;flex:1}
.nav-link{
  position:relative;padding:10px 14px;border-radius:var(--r-sm);
  font-size:15px;color:var(--text-2);font-weight:600;transition:color var(--ease),background-color var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(108,76,241,.14)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--grad);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:42px;padding:0 16px;border-radius:var(--r-pill);
  background:var(--panel);border:1px solid var(--line);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.22)}
.search-box svg{width:16px;height:16px;color:var(--text-2);flex-shrink:0}
.search-box input{
  width:172px;background:none;border:0;outline:none;font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:rgba(180,170,216,.7)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--panel);position:relative;flex-shrink:0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;top:50%;width:18px;height:2px;border-radius:2px;background:var(--text);
  transform:translate(-50%,-50%);transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none}

/* ---------- 页面首屏 ---------- */
.page-hero{position:relative;overflow:hidden;padding:54px 0 60px;background:var(--bg)}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(14,8,32,.78) 0%,rgba(14,8,32,.93) 62%,var(--bg) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;width:520px;height:520px;right:-180px;top:-220px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,224,196,.22),transparent 68%);pointer-events:none;
}
.page-hero::before{
  content:"";position:absolute;width:420px;height:420px;left:-160px;bottom:-240px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.3),transparent 70%);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:840px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);margin-bottom:20px;flex-wrap:wrap}
.crumb a{color:var(--text-2);transition:color var(--ease)}
.crumb a:hover{color:var(--brand-2)}
.crumb span.now{color:rgba(180,170,216,.62)}
.crumb i{font-style:normal;opacity:.5}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:var(--r-pill);font-size:12.5px;font-weight:700;
  background:rgba(108,76,241,.16);border:1px solid rgba(108,76,241,.45);color:#CFC4FF;
}
.tag-warm{background:rgba(255,138,61,.14);border-color:rgba(255,138,61,.45);color:#FFC79B}
.page-hero h1{
  font-size:44px;line-height:1.25;margin:20px 0 14px;letter-spacing:.5px;
}
.page-hero h1 .hl{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;color:var(--text-2);max-width:660px}
.hero-pills{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:var(--r-pill);
  background:linear-gradient(135deg,rgba(108,76,241,.2),rgba(31,224,196,.12));
  border:1px solid var(--line);font-size:13.5px;color:var(--text-2);transition:border-color var(--ease);
}
.pill b{color:var(--text);font-variant-numeric:tabular-nums;font-weight:800}
.pill:hover{border-color:rgba(31,224,196,.5)}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ---------- 锚点导航条 ---------- */
.anchor-bar{position:relative;z-index:5;border-bottom:1px solid var(--line);background:rgba(23,17,46,.72)}
.anchor-scroll{
  display:flex;gap:10px;overflow-x:auto;padding:14px 24px;scrollbar-width:none;
}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-link{
  flex:0 0 auto;padding:9px 18px;border-radius:var(--r-pill);border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--text-2);background:var(--panel);
  transition:color var(--ease),border-color var(--ease),background-color var(--ease);
}
.anchor-link:hover{color:var(--text);border-color:rgba(31,224,196,.5)}
.anchor-link.is-active{color:#fff;background:var(--grad);border-color:transparent;box-shadow:0 8px 18px rgba(108,76,241,.3)}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0}
.section-alt{background:linear-gradient(180deg,rgba(30,23,64,.55) 0%,rgba(14,8,32,0) 100%)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head h2{font-size:32px;line-height:1.3}
.section-head p{color:var(--text-2);font-size:15.5px;margin-top:10px;max-width:640px}
.section-head .side{align-self:center}

/* ---------- 玩法路线错落网格 ---------- */
.guide-columns{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.guide-col{display:flex;flex-direction:column;gap:24px}
.guide-col.offset{padding-top:52px}
.guide-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.guide-card:hover{transform:translateY(-4px);border-color:rgba(108,76,241,.75);box-shadow:var(--sh-2)}
.guide-fig{
  position:relative;height:190px;overflow:hidden;
  background:linear-gradient(135deg,#6C4CF1,#1FE0C4);
}
.guide-fig.h-lg{height:250px}
.guide-fig.h-sm{height:150px}
.guide-fig img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease)}
.guide-card:hover .guide-fig img{transform:scale(1.03)}
.guide-fig .diff{
  position:absolute;left:16px;top:16px;padding:5px 13px;border-radius:var(--r-pill);
  font-size:12px;font-weight:800;letter-spacing:.4px;background:var(--grad-warm);color:#fff;
  box-shadow:0 6px 16px rgba(255,77,141,.28);
}
.guide-fig .diff.cool{background:linear-gradient(135deg,#1FE0C4,#6C4CF1);box-shadow:0 6px 16px rgba(31,224,196,.26)}
.guide-body{padding:24px}
.guide-body h3{font-size:20px;line-height:1.45;margin-bottom:10px}
.guide-body p{color:var(--text-2);font-size:15px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.guide-meta{display:flex;align-items:center;gap:14px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line);flex-wrap:wrap}
.guide-meta .m{font-size:13px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px}
.guide-meta .m svg{width:15px;height:15px;color:var(--brand-2)}

/* ---------- 折叠详情面板 ---------- */
.fold-list{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--panel);overflow:hidden}
.fold-item+.fold-item{border-top:1px solid var(--line)}
.fold-head{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:22px 26px;font-size:17px;font-weight:700;transition:background-color var(--ease);
}
.fold-head:hover{background:rgba(108,76,241,.1)}
.fold-head .idx{
  width:30px;height:30px;flex-shrink:0;border-radius:10px;display:grid;place-items:center;
  font-size:13px;font-weight:800;background:rgba(108,76,241,.18);border:1px solid rgba(108,76,241,.4);color:#CFC4FF;
}
.fold-head .plus{
  margin-left:auto;width:26px;height:26px;flex-shrink:0;position:relative;
  transition:transform var(--ease);
}
.fold-head .plus::before,
.fold-head .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-2);border-radius:2px;transform:translate(-50%,-50%);
}
.fold-head .plus::before{width:14px;height:2px}
.fold-head .plus::after{width:2px;height:14px}
.fold-item.is-open{border-color:var(--brand)}
.fold-item.is-open .fold-head{background:rgba(108,76,241,.12)}
.fold-item.is-open .fold-head .plus{transform:rotate(45deg)}
.fold-item.is-open .fold-head .plus::before,
.fold-item.is-open .fold-head .plus::after{background:var(--brand-2)}
.fold-body{display:none;padding:0 26px 26px 72px;color:var(--text-2);font-size:15px;line-height:1.9}
.fold-item.is-open .fold-body{display:block}
.fold-body strong{color:var(--text)}

/* ---------- 数据指标条 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  padding:32px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:linear-gradient(135deg,rgba(108,76,241,.16),rgba(31,224,196,.07));
}
.metric{text-align:left;padding:6px 4px}
.metric b{
  display:block;font-size:36px;line-height:1.1;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.metric span{display:block;font-size:13.5px;color:var(--text-2);margin-top:8px}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:340px 1fr;gap:48px;align-items:start}
.faq-aside h2{font-size:32px;line-height:1.3}
.faq-aside p{color:var(--text-2);font-size:15.5px;margin-top:14px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--panel);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:rgba(108,76,241,.6)}
.faq-item.is-open{border-color:var(--brand);box-shadow:0 0 0 1px rgba(108,76,241,.45)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  padding:18px 22px;font-size:17px;font-weight:600;color:var(--text);
}
.faq-q .plus{margin-left:auto;width:24px;height:24px;position:relative;flex-shrink:0;transition:transform var(--ease)}
.faq-q .plus::before,
.faq-q .plus::after{content:"";position:absolute;left:50%;top:50%;background:var(--text-2);border-radius:2px;transform:translate(-50%,-50%)}
.faq-q .plus::before{width:13px;height:2px}
.faq-q .plus::after{width:2px;height:13px}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg)}
.faq-item.is-open .faq-q .plus::before,
.faq-item.is-open .faq-q .plus::after{background:var(--brand-2)}
.faq-a{display:none;padding:0 22px 22px;font-size:15px;line-height:1.9;color:var(--text-2)}
.faq-item.is-open .faq-a{display:block}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:40px 44px;border-radius:var(--r-lg);
  background:linear-gradient(135deg,rgba(108,76,241,.45),rgba(31,224,196,.22));
  border:1px solid rgba(108,76,241,.5);
}
.cta-band::after{
  content:"";position:absolute;width:320px;height:320px;right:-90px;top:-140px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,138,61,.34),transparent 68%);
}
.cta-band h2{font-size:28px;line-height:1.35;position:relative;z-index:1}
.cta-band p{color:rgba(244,242,255,.8);font-size:15px;margin-top:10px;position:relative;z-index:1}
.cta-band .cta-act{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:24px;border-top:1px solid var(--line);background:rgba(17,11,38,.92);padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{color:var(--text-2);font-size:14.5px;line-height:1.85;max-width:360px}
.footer-col h4{font-size:15px;margin-bottom:16px;letter-spacing:.5px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:var(--text-2);font-size:14.5px;transition:color var(--ease),transform var(--ease);display:inline-block}
.footer-col a:hover{color:var(--brand-2);transform:translateX(3px)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(180,170,216,.8);
}
.footer-bottom .sep{opacity:.4}

/* ---------- 移动端底部固定条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:56px;padding:0 16px;align-items:center;gap:12px;
  background:rgba(12,6,28,.97);border-top:1px solid var(--line);
}
.mobile-bar span{font-size:13.5px;color:var(--text-2);flex:1}
.mobile-bar .btn{flex:0 0 auto}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .faq-layout{grid-template-columns:300px 1fr;gap:36px}
  .nav-inner{gap:20px}
  .search-box input{width:130px}
}
@media (max-width:1024px){
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:80;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:88px 22px 32px;background:#150F2E;border-left:1px solid var(--line);
    transform:translateX(102%);transition:transform .3s ease;overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{padding:14px 16px;font-size:16px}
  .nav-link.is-active::after{left:16px;right:auto;width:26px;bottom:6px}
  .nav-toggle{display:block;z-index:90}
  .search-box input{width:140px}
  .section{padding:56px 0}
  .guide-fig.h-lg{height:220px}
}
@media (max-width:1023px){
  .guide-columns{grid-template-columns:1fr}
  .guide-col.offset{padding-top:0}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 16px}
  .section{padding:40px 0}
  .nav-inner{height:66px}
  .search-box{padding:0;width:42px;height:42px;justify-content:center}
  .search-box input{display:none}
  .brand-text em{letter-spacing:1px}
  .badge-hide{display:none}
  .page-hero{padding:36px 0 44px}
  .page-hero h1{font-size:30px;margin:16px 0 12px}
  .hero-sub{font-size:15.5px}
  .section-head h2{font-size:24px}
  .section-head{margin-bottom:24px}
  .metrics{grid-template-columns:1fr 1fr;padding:22px;gap:14px}
  .metric b{font-size:28px}
  .guide-fig,.guide-fig.h-lg{height:180px}
  .fold-head{padding:18px;font-size:15.5px}
  .fold-body{padding:0 18px 20px 18px}
  .cta-band{padding:28px 22px}
  .cta-band h2{font-size:22px}
  .mobile-bar{display:flex}
  body{padding-bottom:56px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .btn{padding:12px 20px;min-height:44px}
}
@media (max-width:480px){
  .page-hero h1{font-size:26px}
  .hero-pills{gap:8px}
  .pill{font-size:12.5px;padding:7px 12px}
  .guide-body{padding:18px}
  .guide-body h3{font-size:18px}
  .metrics{padding:18px}
  .metric b{font-size:24px}
  .section{padding:34px 0}
}