/* roulang page: index */
:root{
  --ink:#0e1327;
  --ink-soft:#2b3150;
  --muted:#6b7290;
  --line:#e6e8f4;
  --line-strong:#d3d8ee;
  --paper:#ffffff;
  --bg:#f5f6fc;
  --bg-2:#eef0fa;
  --brand:#4f46e5;
  --brand-2:#0ea5e9;
  --brand-3:#7c3aed;
  --accent:#f59e0b;
  --ok:#10b981;
  --grad:linear-gradient(120deg,#4f46e5 0%,#6d5cf6 45%,#0ea5e9 100%);
  --grad-soft:linear-gradient(120deg,rgba(79,70,229,.10),rgba(14,165,233,.10));
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:26px;
  --sh-1:0 1px 2px rgba(16,20,40,.05),0 6px 18px rgba(16,20,40,.05);
  --sh-2:0 10px 30px rgba(31,38,84,.12);
  --sh-3:0 18px 50px rgba(31,38,84,.18);
  --max:1180px;
}
*,*::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",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;
  line-height:1.78;
  color:var(--ink-soft);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.35;font-weight:800;letter-spacing:-.01em}
p{margin: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(--max);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(230,232,244,.9);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(16,20,40,.09);background:rgba(255,255,255,.96)}
.nav{height:64px;display:flex;align-items:center;gap:16px}
.logo{display:flex;align-items:center;gap:9px;flex-shrink:0;font-weight:800;color:var(--ink);font-size:15.5px;letter-spacing:-.02em}
.logo-mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  background:var(--grad);color:#fff;box-shadow:0 6px 16px rgba(79,70,229,.32);flex-shrink:0;
}
.logo-mark svg{width:18px;height:18px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-link{
  display:inline-flex;align-items:center;height:36px;padding:0 13px;border-radius:9px;
  font-size:14.5px;font-weight:600;color:var(--ink-soft);transition:.18s ease;white-space:nowrap;
}
.nav-link:hover{background:#f0f2fa;color:var(--brand)}
.nav-link.is-active{color:var(--brand);background:rgba(79,70,229,.09)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-burger{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;transition:.18s;
}
.nav-burger:hover{border-color:var(--line-strong);background:#f7f8fe}
.nav-burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
.nav-burger span::before{top:-6px}
.nav-burger span::after{top:6px}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;padding:10px 20px 20px}
.mobile-menu.is-open{display:block}
.mobile-menu a{display:block;padding:12px 4px;font-weight:600;color:var(--ink-soft);border-bottom:1px solid #f1f3fb;min-height:44px}
.mobile-menu a:last-of-type{border-bottom:0}
.mobile-menu .m-btn{margin-top:14px;width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 18px;border-radius:10px;border:1px solid transparent;
  font-size:14.5px;font-weight:700;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(79,70,229,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 13px 28px rgba(79,70,229,.36)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;border-color:var(--line-strong);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.3);color:#eef1ff}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.5);transform:translateY(-2px)}
.btn-lg{height:48px;padding:0 24px;font-size:15px}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#e9ecff;
  background:#0b1024 url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(112deg,rgba(9,13,32,.97) 0%,rgba(17,22,58,.93) 46%,rgba(79,70,229,.62) 100%);
}
.hero::after{
  content:"";position:absolute;width:620px;height:620px;right:-160px;top:-220px;border-radius:50%;
  background:radial-gradient(circle,rgba(14,165,233,.42),transparent 66%);filter:blur(18px);pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;
  gap:52px;align-items:center;padding:66px 0 104px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  font-size:12.5px;font-weight:700;letter-spacing:.03em;color:#dfe4ff;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:#38e2b0;box-shadow:0 0 0 4px rgba(56,226,176,.2)}
.hero h1{
  color:#fff;margin:18px 0 16px;font-size:clamp(27px,3.5vw,42px);line-height:1.28;letter-spacing:-.02em;
  text-shadow:0 2px 24px rgba(4,8,26,.35);
}
.hero-lead{font-size:15.5px;line-height:1.85;color:#c6cdec;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:999px;
  font-size:12.5px;font-weight:600;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#d7dcf7;
}
.tag-plain{background:#f0f2fa;border-color:#e2e5f3;color:#4a5170}

/* hero panel */
.hero-panel{
  border-radius:var(--r-xl);padding:20px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  box-shadow:0 26px 60px rgba(4,8,26,.5);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}
.panel-head h2{font-size:15px;color:#fff;font-weight:800}
.panel-head .pill{
  font-size:11.5px;font-weight:700;padding:3px 10px;border-radius:999px;
  background:rgba(56,226,176,.16);color:#5cf0c4;border:1px solid rgba(56,226,176,.3);
}
.rank-item{padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.14)}
.rank-item:last-of-type{border-bottom:0}
.rank-top{display:flex;align-items:center;gap:10px;font-size:13.5px;color:#dfe4ff;font-weight:600}
.rank-no{
  width:22px;height:22px;border-radius:7px;display:grid;place-items:center;flex-shrink:0;
  font-size:11.5px;font-weight:800;background:rgba(255,255,255,.14);color:#fff;
}
.rank-item:nth-child(2) .rank-no{background:linear-gradient(135deg,#f59e0b,#f97316);color:#1a1205}
.rank-item:nth-child(3) .rank-no{background:rgba(14,165,233,.5)}
.rank-score{margin-left:auto;font-size:12.5px;color:#8fe3ff;font-weight:700}
.rank-bar{height:6px;border-radius:999px;background:rgba(255,255,255,.12);margin-top:8px;overflow:hidden}
.rank-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#6d5cf6,#0ea5e9)}
.panel-foot{
  margin-top:14px;padding-top:13px;border-top:1px solid rgba(255,255,255,.14);
  font-size:12px;color:#9aa3cf;display:flex;justify-content:space-between;gap:10px;
}

/* ---------- stats strip ---------- */
.stats-wrap{position:relative;z-index:6;margin-top:-56px}
.stats-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);overflow:hidden;
  box-shadow:var(--sh-3);
}
.stat{padding:22px 24px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat-num{
  font-size:26px;font-weight:800;letter-spacing:-.02em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{font-size:12.5px;color:var(--muted);margin-top:2px;font-weight:600}

/* ---------- sections ---------- */
.section{padding:78px 0}
.section--tint{background:var(--bg-2)}
.section--paper{background:#fff}
.section--dark{background:#0b1024;color:#c6cdec;position:relative;overflow:hidden}
.section--dark::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(700px 340px at 15% 0%,rgba(79,70,229,.35),transparent 70%),
             radial-gradient(600px 300px at 88% 100%,rgba(14,165,233,.28),transparent 70%);
  pointer-events:none;
}
.section--dark .container{position:relative;z-index:2}
.sec-head{max-width:760px;margin-bottom:38px}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:800;
  letter-spacing:.08em;text-transform:uppercase;color:var(--brand);margin-bottom:12px;
}
.sec-kicker::before{content:"";width:26px;height:3px;border-radius:2px;background:var(--grad)}
.section--dark .sec-kicker{color:#8fd8ff}
.sec-title{font-size:clamp(21px,2.5vw,29px);letter-spacing:-.02em}
.section--dark .sec-title{color:#fff}
.sec-desc{color:var(--muted);margin-top:12px;font-size:14.5px;line-height:1.85}
.section--dark .sec-desc{color:#a7b0d6}

/* ---------- cards ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#cfd5ee}
.cover{overflow:hidden;background:var(--bg-2)}
.cover img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease}
.card:hover .cover img{transform:scale(1.045)}

/* ---------- content calendar ---------- */
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:12px}
.cal-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:16px 14px;
  min-height:132px;display:flex;flex-direction:column;gap:6px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.cal-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#cfd5ee}
.cal-day{font-size:12px;font-weight:800;color:var(--brand);letter-spacing:.05em}
.cal-item h3{font-size:13.5px;line-height:1.5;font-weight:700}
.cal-item p{font-size:12.5px;color:var(--muted);line-height:1.65;margin-top:auto}
.cal-item.is-today{background:var(--grad);border-color:transparent;box-shadow:0 14px 32px rgba(79,70,229,.32)}
.cal-item.is-today .cal-day,.cal-item.is-today h3{color:#fff}
.cal-item.is-today p{color:rgba(255,255,255,.82)}

/* ---------- topic cards ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.topic-card .card-body{padding:18px 20px 20px}
.topic-card h3{font-size:16.5px;margin-bottom:8px}
.topic-card p{font-size:13.5px;color:var(--muted);line-height:1.75}
.card-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.chip{
  font-size:11.5px;font-weight:700;padding:3px 10px;border-radius:999px;
  background:rgba(79,70,229,.09);color:var(--brand);border:1px solid rgba(79,70,229,.14);
}
.chip-cyan{background:rgba(14,165,233,.1);color:#0284c7;border-color:rgba(14,165,233,.18)}
.chip-amber{background:rgba(245,158,11,.12);color:#b45309;border-color:rgba(245,158,11,.22)}

/* ---------- split / insight ---------- */
.split{display:grid;grid-template-columns:1.02fr 1fr;gap:46px;align-items:center}
.split-media img{border-radius:var(--r-xl);box-shadow:var(--sh-2);width:100%;aspect-ratio:16/11;object-fit:cover}
.split h2{font-size:clamp(20px,2.4vw,28px);margin-bottom:14px}
.split p{font-size:14.5px;color:var(--muted);line-height:1.85}
.split p + p{margin-top:12px}
.split-list{margin-top:22px;display:grid;gap:12px}
.split-list li{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--ink-soft)}
.li-dot{
  width:22px;height:22px;border-radius:7px;flex-shrink:0;display:grid;place-items:center;
  background:var(--grad-soft);color:var(--brand);margin-top:2px;
}
.li-dot svg{width:13px;height:13px}

/* ---------- news grid (CMS) ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{display:flex;flex-direction:column;padding:20px 20px 18px}
.news-cat{
  display:inline-flex;align-self:flex-start;font-size:11.5px;font-weight:800;padding:3px 10px;
  border-radius:999px;background:rgba(79,70,229,.09);color:var(--brand);margin-bottom:12px;
}
.news-card h3{font-size:16px;line-height:1.55;margin-bottom:9px}
.news-card h3 a{color:inherit}
.news-card p{font-size:13.5px;color:var(--muted);line-height:1.75;flex:1}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:16px;padding-top:13px;border-top:1px solid #f1f3fb;font-size:12.5px;color:#8a90ad;
}
.news-arrow{color:var(--brand);font-weight:800;transition:transform .2s ease}
.news-card:hover .news-arrow{transform:translateX(4px)}
.empty-note{
  padding:34px 24px;text-align:center;border:1px dashed var(--line-strong);
  border-radius:var(--r-lg);color:var(--muted);background:#fff;font-size:14px;
}

/* ---------- picks (media) ---------- */
.picks{display:grid;grid-template-columns:1fr;gap:14px}
.pick{
  display:flex;gap:16px;align-items:center;padding:14px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);transition:.2s ease;
}
.pick:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#cfd5ee}
.pick-thumb{
  width:64px;height:64px;border-radius:12px;flex-shrink:0;display:grid;place-items:center;
  background:var(--grad-soft);color:var(--brand);
}
.pick-thumb svg{width:24px;height:24px}
.pick-body h3{font-size:14.5px;line-height:1.5;margin-bottom:5px}
.pick-body p{font-size:12.5px;color:var(--muted);line-height:1.65}
.pick-body time{font-size:11.5px;color:#9aa1bb;display:block;margin-top:5px}

/* ---------- analytics ---------- */
.analytics{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center}
.meter-list{display:grid;gap:20px}
.meter-row{display:flex;flex-direction:column;gap:8px}
.meter-top{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-size:13.5px;font-weight:700;color:var(--ink)}
.meter-top b{font-size:15px;color:var(--brand);font-weight:800}
.meter-bar{height:9px;border-radius:999px;background:#e9ecf8;overflow:hidden}
.meter-bar i{display:block;height:100%;border-radius:999px;background:var(--grad)}
.meter-note{font-size:12.5px;color:var(--muted)}

/* ---------- category entry wall ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.entry-card{
  position:relative;padding:26px 24px 24px;border-radius:var(--r-xl);background:#fff;
  border:1px solid var(--line);box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.entry-card::before{content:"";position:absolute;left:0;top:0;height:4px;width:100%;background:var(--grad);opacity:0;transition:opacity .22s}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#cfd5ee}
.entry-card:hover::before{opacity:1}
.entry-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:var(--grad-soft);color:var(--brand);margin-bottom:16px;
}
.entry-icon svg{width:22px;height:22px}
.entry-card h3{font-size:17.5px;margin-bottom:9px}
.entry-card p{font-size:13.5px;color:var(--muted);line-height:1.75;flex:1}
.entry-link{display:inline-flex;align-items:center;gap:7px;margin-top:16px;font-size:13.5px;font-weight:800;color:var(--brand)}
.entry-link svg{width:14px;height:14px;transition:transform .2s}
.entry-card:hover .entry-link svg{transform:translateX(4px)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 22px 22px;box-shadow:var(--sh-1);transition:.2s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.step-no{
  counter-increment:step;font-size:12px;font-weight:800;letter-spacing:.1em;color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;height:26px;padding:0 12px;
  border-radius:999px;background:rgba(79,70,229,.09);margin-bottom:14px;
}
.step-no::before{content:"0" counter(step) " · "}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--muted);line-height:1.75}

/* ---------- guarantee ---------- */
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.guard{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 20px;
  box-shadow:var(--sh-1);transition:.2s ease;
}
.guard:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#cfd5ee}
.guard-icon{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;margin-bottom:14px;
  background:var(--grad-soft);color:var(--brand);
}
.guard-icon svg{width:20px;height:20px}
.guard h3{font-size:15px;margin-bottom:7px}
.guard p{font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- voices ---------- */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.voice{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 22px;
  box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:14px;transition:.2s ease;
}
.voice:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.voice p{font-size:14px;line-height:1.8;color:var(--ink-soft)}
.voice-who{display:flex;align-items:center;gap:11px;margin-top:auto}
.avatar{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;color:#fff;
  font-size:13px;font-weight:800;background:var(--grad);flex-shrink:0;
}
.voice-who b{display:block;font-size:13.5px;color:var(--ink)}
.voice-who span{display:block;font-size:12px;color:var(--muted)}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;
  box-shadow:var(--sh-1);transition:.2s ease;
}
.faq-item:hover{box-shadow:var(--sh-2);border-color:#cfd5ee}
.faq-q{display:flex;gap:11px;align-items:flex-start;font-size:15px;font-weight:800;color:var(--ink);margin-bottom:10px;line-height:1.55}
.faq-mark{
  width:22px;height:22px;border-radius:7px;flex-shrink:0;display:grid;place-items:center;
  background:var(--grad);color:#fff;font-size:12px;font-weight:800;margin-top:2px;
}
.faq-a{font-size:13.5px;color:var(--muted);line-height:1.8;padding-left:33px}

/* ---------- subscribe ---------- */
.subscribe{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  padding:44px 44px 42px;color:#e9ecff;
  background:#0b1024 url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  box-shadow:var(--sh-3);
}
.subscribe::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(11,16,36,.95) 0%,rgba(38,32,105,.9) 52%,rgba(14,165,233,.6) 100%);
}
.subscribe > *{position:relative;z-index:2}
.subscribe h2{color:#fff;font-size:clamp(20px,2.4vw,27px);margin-bottom:10px}
.subscribe p{color:#b9c1e6;font-size:14px;line-height:1.8;max-width:640px}
.sub-form{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap}
.sub-input{
  flex:1 1 280px;height:46px;padding:0 16px;border-radius:10px;
  border:1px solid rgba(255,255,255,.26);background:rgba(255,255,255,.1);color:#fff;
  font-size:14px;transition:.18s;
}
.sub-input::placeholder{color:#9aa3cf}
.sub-input:focus{outline:none;border-color:#7fe0ff;background:rgba(255,255,255,.16);box-shadow:0 0 0 3px rgba(14,165,233,.25)}
.sub-msg{margin-top:14px;font-size:13px;color:#7ff0c9;font-weight:600}

/* ---------- footer ---------- */
.site-footer{background:#080c1c;color:#98a1c4;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16px;margin-bottom:14px}
.footer-brand .logo-mark{width:32px;height:32px}
.footer-about{font-size:13px;line-height:1.85;color:#8a93b8;max-width:320px}
.footer-col h4{font-size:13.5px;color:#dfe4ff;margin-bottom:14px;font-weight:800;letter-spacing:.02em}
.footer-col a{display:block;font-size:13px;color:#8a93b8;padding:6px 0;transition:.18s;min-height:32px}
.footer-col a:hover{color:#7fe0ff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:#6f789c;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-actions{display:none}
  .nav-burger{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:34px;padding:52px 0 96px}
  .hero-panel{max-width:560px}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .stat{border-right:0;border-bottom:1px solid var(--line)}
  .stat:nth-child(odd){border-right:1px solid var(--line)}
  .stat:nth-last-child(-n+2){border-bottom:0}
  .cal-grid{grid-template-columns:repeat(4,1fr)}
  .topic-grid,.news-grid,.entry-grid,.steps,.voice-grid{grid-template-columns:repeat(2,1fr)}
  .guard-grid{grid-template-columns:repeat(2,1fr)}
  .split,.analytics{grid-template-columns:1fr;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
  .section{padding:58px 0}
  .hero h1{font-size:26px}
  .hero-lead{font-size:14.5px}
  .cal-grid{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr}
  .subscribe{padding:32px 24px 30px}
  .sec-head{margin-bottom:28px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .topic-grid,.news-grid,.entry-grid,.steps,.voice-grid,.guard-grid{grid-template-columns:1fr}
  .stats-bar{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:0}
  .stat:nth-child(odd){border-right:0}
  .cal-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .sub-form .btn{width:100%}
  .hero-tags .tag{font-size:11.5px}
  .pick{flex-direction:row}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: article */
:root{
 --ink:#0e1327;
 --ink-soft:#2b3150;
 --muted:#6b7290;
 --line:#e6e8f4;
 --line-strong:#d3d8ee;
 --paper:#ffffff;
 --bg:#f5f6fc;
 --bg-2:#eef0fa;
 --brand:#4f46e5;
 --brand-2:#0ea5e9;
 --brand-3:#7c3aed;
 --accent:#f59e0b;
 --ok:#10b981;
 --grad:linear-gradient(120deg,#4f46e5 0%,#6d5cf6 45%,#0ea5e9 100%);
 --grad-soft:linear-gradient(120deg,rgba(79,70,229,.10),rgba(14,165,233,.10));
 --r-sm:8px;
 --r-md:12px;
 --r-lg:18px;
 --r-xl:26px;
 --sh-1:0 1px 2px rgba(16,20,40,.05),0 6px 18px rgba(16,20,40,.05);
 --sh-2:0 10px 30px rgba(31,38,84,.12);
 --sh-3:0 18px 50px rgba(31,38,84,.18);
 --max:1180px;
}
*,*::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",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15px;
 line-height:1.78;
 color:var(--ink-soft);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.88);
 backdrop-filter:blur(16px);
 -webkit-backdrop-filter:blur(16px);
 border-bottom:1px solid rgba(230,232,244,.9);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(16,20,40,.09);background:rgba(255,255,255,.96)}
.nav{height:64px;display:flex;align-items:center;gap:16px}
.logo{display:flex;align-items:center;gap:9px;flex-shrink:0;font-weight:800;color:var(--ink);font-size:15.5px;letter-spacing:-.02em}
.logo-mark{
 width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
 background:var(--grad);color:#fff;box-shadow:0 6px 16px rgba(79,70,229,.32);flex-shrink:0;
}
.logo-mark svg{width:18px;height:18px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-link{
 display:inline-flex;align-items:center;height:36px;padding:0 13px;border-radius:9px;
 font-size:14.5px;font-weight:600;color:var(--ink-soft);transition:.18s ease;white-space:nowrap;
}
.nav-link:hover{background:#f0f2fa;color:var(--brand)}
.nav-link.is-active{color:var(--brand);background:rgba(79,70,229,.09)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-burger{
 display:none;margin-left:auto;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
 background:#fff;align-items:center;justify-content:center;cursor:pointer;transition:.18s;
}
.nav-burger:hover{border-color:var(--line-strong);background:#f7f8fe}
.nav-burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
.nav-burger span::before{top:-6px}
.nav-burger span::after{top:6px}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;padding:10px 20px 20px}
.mobile-menu.is-open{display:block}
.mobile-menu a{display:block;padding:12px 4px;font-weight:600;color:var(--ink-soft);border-bottom:1px solid #f1f3fb;min-height:44px}
.mobile-menu a:last-of-type{border-bottom:0}
.mobile-menu .m-btn{margin-top:14px;width:100%}

/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 height:42px;padding:0 18px;border-radius:10px;border:1px solid transparent;
 font-size:14.5px;font-weight:700;cursor:pointer;
 transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
 white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(79,70,229,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 13px 28px rgba(79,70,229,.36)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;border-color:var(--line-strong);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-light{background:#fff;color:var(--brand);box-shadow:0 10px 24px rgba(9,13,32,.22)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(9,13,32,.3)}
.btn-lg{height:48px;padding:0 24px;font-size:15px}

/* ---------- masthead ---------- */
.masthead{
 position:relative;overflow:hidden;color:#e9ecff;
 background:#0b1024 url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.masthead::before{
 content:"";position:absolute;inset:0;
 background:linear-gradient(112deg,rgba(9,13,32,.97) 0%,rgba(17,22,58,.93) 48%,rgba(79,70,229,.62) 100%);
}
.masthead::after{
 content:"";position:absolute;width:560px;height:560px;right:-180px;top:-200px;border-radius:50%;
 background:radial-gradient(circle,rgba(14,165,233,.4),transparent 66%);filter:blur(16px);pointer-events:none;
}
.masthead-inner{position:relative;z-index:2;max-width:900px;padding:52px 0 96px}
.crumb{
 display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
 background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
 font-size:12.5px;font-weight:700;color:#dfe4ff;letter-spacing:.02em;
}
.masthead h1{
 color:#fff;font-size:clamp(25px,3.3vw,38px);line-height:1.32;letter-spacing:-.02em;
 margin:18px 0 14px;text-shadow:0 2px 24px rgba(4,8,26,.35);
}
.masthead-lead{font-size:15.5px;line-height:1.85;color:#c3cbea;max-width:720px}
.meta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.meta-pill{
 display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:999px;
 font-size:12.5px;font-weight:600;background:rgba(255,255,255,.1);
 border:1px solid rgba(255,255,255,.2);color:#d7dcf7;
}

/* ---------- article shell ---------- */
.article-shell{position:relative;z-index:3;margin-top:-58px}
.post-cover{
 border-radius:var(--r-xl);overflow:hidden;background:#fff;
 border:1px solid rgba(255,255,255,.7);box-shadow:var(--sh-3);
}
.post-cover img{width:100%;aspect-ratio:16/7;object-fit:cover}
.article-card{
 margin-top:26px;padding:34px 38px;background:var(--paper);
 border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-1);
}
.article-body{font-size:15.8px;line-height:1.86;color:#333a5c;word-break:break-word}
.article-body > *:first-child{margin-top:0}
.article-body h2{
 font-size:21.5px;line-height:1.45;color:var(--ink);margin:34px 0 14px;
 position:relative;padding-left:15px;
}
.article-body h2::before{
 content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:3px;background:var(--grad);
}
.article-body h3{font-size:17.5px;line-height:1.5;color:var(--ink);margin:26px 0 10px}
.article-body h4{font-size:15.5px;color:var(--ink);margin:20px 0 8px}
.article-body p{margin:0 0 15px}
.article-body ul,.article-body ol{margin:0 0 16px;padding-left:22px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:0 0 8px}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body strong{color:var(--ink)}
.article-body img{border-radius:var(--r-md);margin:20px 0;height:auto}
.article-body blockquote{
 margin:22px 0;padding:18px 22px;border-left:4px solid var(--brand);
 background:var(--grad-soft);border-radius:0 var(--r-md) var(--r-md) 0;
 color:var(--ink);font-weight:600;
}
.article-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:var(--bg-2);color:var(--ink)}
.empty-state{text-align:center;padding:36px 10px 30px}
.empty-state h2{font-size:20px;color:var(--ink);margin-bottom:10px;padding-left:0}
.empty-state h2::before{display:none}
.empty-state p{color:var(--muted);margin-bottom:20px}

/* ---------- pull quote ---------- */
.quote-band{padding:52px 0 6px}
.pull-quote{
 position:relative;margin:0;padding:30px 34px 30px 46px;
 background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
 box-shadow:var(--sh-1);color:var(--ink);font-size:16.5px;line-height:1.8;font-weight:600;
}
.pull-quote::before{
 content:"“";position:absolute;left:14px;top:6px;font-size:46px;line-height:1;
 color:var(--brand);opacity:.32;font-family:Georgia,serif;
}
.pull-quote cite{display:block;margin-top:12px;font-size:13px;font-style:normal;color:var(--muted);font-weight:600}

/* ---------- sections ---------- */
.section{padding:62px 0}
.section--paper{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--soft{background:var(--bg-2)}
.section-head{max-width:680px;margin-bottom:30px}
.eyebrow{
 display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:800;
 letter-spacing:.08em;color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:3px;border-radius:2px;background:var(--grad)}
.section-head h2{font-size:clamp(21px,2.4vw,28px);line-height:1.4;color:var(--ink);margin:10px 0 10px;letter-spacing:-.01em}
.section-head p{color:var(--muted);font-size:14.8px}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{
 background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:24px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.card-icon{
 width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
 background:var(--grad-soft);color:var(--brand);margin-bottom:16px;
}
.card-icon svg{width:20px;height:20px}
.card h3{font-size:16.5px;color:var(--ink);margin-bottom:8px;line-height:1.5}
.card p{font-size:14px;color:var(--muted);line-height:1.75}
.card-tag{
 display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;
 background:#f0f2fa;border:1px solid #e2e5f3;color:#4a5170;
 font-size:12px;font-weight:700;margin-top:14px;
}

/* split */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);box-shadow:var(--sh-2)}
.check-list{display:grid;gap:14px;margin-top:22px}
.check-list li{display:flex;gap:13px;align-items:flex-start;font-size:14.6px;color:var(--ink-soft);line-height:1.72}
.check-dot{
 flex:0 0 26px;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
 background:rgba(79,70,229,.1);color:var(--brand);font-size:12.5px;font-weight:800;margin-top:2px;
}

/* faq */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
 background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);
 box-shadow:var(--sh-1);padding:0 20px;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--line-strong);box-shadow:var(--sh-2)}
.faq-item summary{
 display:flex;align-items:center;justify-content:space-between;gap:16px;
 padding:16px 0;min-height:44px;cursor:pointer;list-style:none;
 font-size:15.5px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;line-height:1;color:var(--brand);transition:transform .2s ease}
.faq-item[open] summary::after{content:"−"}
.faq-item p{padding:0 0 18px;font-size:14.4px;color:var(--muted);line-height:1.8}

/* related cards */
.rel-card{
 display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);
 border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.rel-card-body{padding:20px 22px 22px}
.rel-card h3{font-size:16px;color:var(--ink);margin-bottom:8px;line-height:1.5}
.rel-card p{font-size:13.8px;color:var(--muted);line-height:1.72}
.rel-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13.5px;font-weight:700;color:var(--brand)}

/* cta band */
.cta-wrap{padding:12px 0 8px}
.cta-band{
 position:relative;overflow:hidden;border-radius:var(--r-xl);padding:42px 44px;
 background:var(--grad);color:#fff;box-shadow:var(--sh-2);
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-band::after{
 content:"";position:absolute;width:340px;height:340px;right:-90px;top:-140px;border-radius:50%;
 background:radial-gradient(circle,rgba(255,255,255,.24),transparent 68%);pointer-events:none;
}
.cta-band h2{position:relative;z-index:2;font-size:clamp(20px,2.4vw,25px);color:#fff;margin-bottom:8px}
.cta-band p{position:relative;z-index:2;color:rgba(255,255,255,.86);font-size:14.6px;max-width:560px;margin:0}
.cta-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn-outline{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.42);color:#fff}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.22);border-color:#fff;color:#fff}

/* ---------- footer ---------- */
.site-footer{background:#0b1024;color:#a9b1d6;padding:56px 0 0;margin-top:70px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16px;margin-bottom:14px}
.footer-about{font-size:13.8px;line-height:1.8;color:#8d95bb;max-width:340px}
.footer-col h4{color:#fff;font-size:14px;margin-bottom:14px;letter-spacing:.02em}
.footer-col a{display:block;font-size:13.8px;color:#9aa2c6;padding:6px 0;transition:color .18s ease,transform .18s ease}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
 border-top:1px solid rgba(255,255,255,.1);padding:18px 0;
 display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
 font-size:13px;color:#7c84ab;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
 .nav-links{gap:0}
 .nav-actions .btn-outline{display:none}
 .hero-grid{grid-template-columns:1fr;gap:36px}
 .grid-3{grid-template-columns:repeat(2,1fr)}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
 .split{grid-template-columns:1fr;gap:30px}
 .article-card{padding:28px 26px}
}
@media (max-width:768px){
 .nav-links,.nav-actions{display:none}
 .nav-burger{display:flex}
 .masthead-inner{padding:40px 0 88px}
 .article-shell{margin-top:-48px}
 .post-cover img{aspect-ratio:16/9}
 .section{padding:50px 0}
 .grid-3,.grid-2{grid-template-columns:1fr}
 .cta-band{padding:32px 26px}
 .cta-actions{width:100%}
 .cta-actions .btn{flex:1 1 auto}
 .article-body{font-size:15.4px}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .logo{font-size:14.6px}
 .logo-mark{width:30px;height:30px}
 .masthead h1{font-size:23px}
 .masthead-lead{font-size:14.6px}
 .article-card{padding:22px 18px;border-radius:var(--r-lg)}
 .post-cover{border-radius:var(--r-lg)}
 .pull-quote{padding:24px 20px 24px 34px;font-size:15.4px}
 .footer-grid{grid-template-columns:1fr;gap:24px}
 .footer-bottom{flex-direction:column;gap:6px}
 .btn{height:44px}
}

/* roulang page: category1 */
:root{
  --ink:#0e1327;
  --ink-soft:#2b3150;
  --muted:#6b7290;
  --line:#e6e8f4;
  --line-strong:#d3d8ee;
  --paper:#ffffff;
  --bg:#f5f6fc;
  --bg-2:#eef0fa;
  --brand:#4f46e5;
  --brand-2:#0ea5e9;
  --brand-3:#7c3aed;
  --accent:#f59e0b;
  --ok:#10b981;
  --grad:linear-gradient(120deg,#4f46e5 0%,#6d5cf6 45%,#0ea5e9 100%);
  --grad-soft:linear-gradient(120deg,rgba(79,70,229,.10),rgba(14,165,233,.10));
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:26px;
  --sh-1:0 1px 2px rgba(16,20,40,.05),0 6px 18px rgba(16,20,40,.05);
  --sh-2:0 10px 30px rgba(31,38,84,.12);
  --sh-3:0 18px 50px rgba(31,38,84,.18);
  --max:1180px;
}
*,*::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",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;
  line-height:1.78;
  color:var(--ink-soft);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.015em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(230,232,244,.9);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(16,20,40,.09);background:rgba(255,255,255,.96)}
.nav{height:64px;display:flex;align-items:center;gap:16px}
.logo{display:flex;align-items:center;gap:9px;flex-shrink:0;font-weight:800;color:var(--ink);font-size:15.5px;letter-spacing:-.02em}
.logo-mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  background:var(--grad);color:#fff;box-shadow:0 6px 16px rgba(79,70,229,.32);flex-shrink:0;
}
.logo-mark svg{width:18px;height:18px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-link{
  display:inline-flex;align-items:center;height:36px;padding:0 13px;border-radius:9px;
  font-size:14.5px;font-weight:600;color:var(--ink-soft);transition:.18s ease;white-space:nowrap;
}
.nav-link:hover{background:#f0f2fa;color:var(--brand)}
.nav-link.is-active{color:var(--brand);background:rgba(79,70,229,.09)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-burger{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;transition:.18s;
}
.nav-burger:hover{border-color:var(--line-strong);background:#f7f8fe}
.nav-burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
.nav-burger span::before{top:-6px}
.nav-burger span::after{top:6px}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;padding:10px 20px 20px}
.mobile-menu.is-open{display:block}
.mobile-menu a{display:block;padding:12px 4px;font-weight:600;color:var(--ink-soft);border-bottom:1px solid #f1f3fb;min-height:44px}
.mobile-menu a:last-of-type{border-bottom:0}
.mobile-menu .m-btn{margin-top:14px;width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 18px;border-radius:10px;border:1px solid transparent;
  font-size:14.5px;font-weight:700;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(79,70,229,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 13px 28px rgba(79,70,229,.36)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;border-color:var(--line-strong);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.3);color:#eef1ff}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.5);transform:translateY(-2px)}
.btn-lg{height:48px;padding:0 24px;font-size:15px}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#e9ecff;
  background:#0b1024 url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(112deg,rgba(9,13,32,.97) 0%,rgba(17,22,58,.93) 46%,rgba(79,70,229,.62) 100%);
}
.page-hero::after{
  content:"";position:absolute;width:560px;height:560px;right:-150px;top:-210px;border-radius:50%;
  background:radial-gradient(circle,rgba(14,165,233,.40),transparent 66%);filter:blur(18px);pointer-events:none;
}
.page-hero-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:1.14fr .86fr;
  gap:48px;align-items:center;padding:52px 0 68px;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:#a7b0d8;margin-bottom:16px;flex-wrap:wrap}
.crumb a{transition:color .18s}
.crumb a:hover{color:#fff}
.crumb i{font-style:normal;color:#6d78a6}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  font-size:12.5px;font-weight:700;letter-spacing:.03em;color:#dfe4ff;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:#38e2b0;box-shadow:0 0 0 4px rgba(56,226,176,.2)}
.page-hero h1{
  color:#fff;margin:16px 0 14px;font-size:clamp(26px,3.5vw,40px);line-height:1.28;
  text-shadow:0 2px 24px rgba(4,8,26,.35);
}
.hero-lead{font-size:15.5px;line-height:1.85;color:#c6cdec;max-width:610px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:999px;
  font-size:12.5px;font-weight:600;background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.2);color:#d7dcf7;
}
.hero-panel{
  border-radius:var(--r-xl);padding:20px;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);
  box-shadow:0 24px 60px rgba(4,8,26,.4);backdrop-filter:blur(10px);
}
.hero-panel h2{color:#fff;font-size:14px;font-weight:800;letter-spacing:.04em;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.hero-panel h2 .pulse{width:8px;height:8px;border-radius:50%;background:#38e2b0;box-shadow:0 0 0 4px rgba(56,226,176,.22)}
.panel-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 14px;border-radius:var(--r-md);background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.12);margin-bottom:9px;
}
.panel-row:last-child{margin-bottom:0}
.panel-row .k{font-size:12.5px;color:#aeb8e0}
.panel-row .v{font-size:14px;font-weight:800;color:#fff}
.panel-row .v.ok{color:#5ff0c2}

/* ---------- sections ---------- */
.section{padding:62px 0}
.section-white{background:var(--paper)}
.section-alt{background:var(--bg-2)}
.section-dark{
  background:#0d1229;color:#c3cbe8;position:relative;overflow:hidden;
}
.section-dark::before{
  content:"";position:absolute;width:520px;height:520px;left:-160px;bottom:-240px;border-radius:50%;
  background:radial-gradient(circle,rgba(79,70,229,.34),transparent 68%);filter:blur(20px);
}
.section-dark .sec-title,.section-dark .sec-desc{color:#fff}
.section-dark .sec-desc{color:#b3bce0}
.section-dark .sec-eyebrow{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2);color:#cfd6f5}
.section-dark .sec-line{background:linear-gradient(90deg,#6d5cf6,#0ea5e9)}
.section-inner{position:relative;z-index:2}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px;flex-wrap:wrap}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:7px;height:26px;padding:0 11px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.04em;color:var(--brand);
  background:rgba(79,70,229,.08);border:1px solid rgba(79,70,229,.16);
}
.sec-line{width:36px;height:4px;border-radius:3px;background:var(--grad);margin:12px 0 12px}
.sec-title{font-size:clamp(21px,2.4vw,28px);line-height:1.35;font-weight:800}
.sec-desc{font-size:14.5px;color:var(--muted);max-width:660px;margin-top:10px;line-height:1.8}

/* ---------- stats strip ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px 18px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.stat-card .num{font-size:26px;font-weight:800;color:var(--ink);letter-spacing:-.03em;line-height:1.2}
.stat-card .num em{font-style:normal;font-size:14px;color:var(--brand);margin-left:2px}
.stat-card .lbl{font-size:13px;color:var(--muted);margin-top:6px}

/* ---------- cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#e9ecf8}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:16.5px;font-weight:800;line-height:1.45}
.card-body p{font-size:14px;color:var(--muted);line-height:1.8}
.chip{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:700;color:var(--brand);background:rgba(79,70,229,.08);
  border:1px solid rgba(79,70,229,.16);align-self:flex-start;
}
.chip-green{color:#0a7f5f;background:rgba(16,185,129,.1);border-color:rgba(16,185,129,.24)}
.chip-amber{color:#a16207;background:rgba(245,158,11,.12);border-color:rgba(245,158,11,.3)}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);margin-top:auto;padding-top:6px}

/* feature card with icon */
.feature{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px 20px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.feature .ico{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--grad-soft);color:var(--brand);margin-bottom:14px;border:1px solid rgba(79,70,229,.14);
}
.feature .ico svg{width:21px;height:21px}
.feature h3{font-size:16px;margin-bottom:8px}
.feature p{font-size:13.8px;color:var(--muted);line-height:1.8}
.section-dark .feature{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12)}
.section-dark .feature h3{color:#fff}
.section-dark .feature p{color:#b3bce0}
.section-dark .feature .ico{background:rgba(255,255,255,.1);color:#b9c4ff;border-color:rgba(255,255,255,.16)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.step{
  position:relative;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px 20px 20px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.step .no{
  display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;
  background:var(--grad);color:#fff;font-weight:800;font-size:14px;margin-bottom:12px;
  box-shadow:0 6px 16px rgba(79,70,229,.28);
}
.step h3{font-size:15.5px;margin-bottom:8px}
.step p{font-size:13.8px;color:var(--muted);line-height:1.78}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.split-media{border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-2);border:1px solid var(--line);background:#e9ecf8}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.checklist{margin-top:22px;display:grid;gap:12px}
.checklist li{
  display:flex;gap:12px;align-items:flex-start;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--r-md);padding:14px 16px;box-shadow:var(--sh-1);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.checklist li:hover{border-color:var(--line-strong);transform:translateX(4px);box-shadow:var(--sh-2)}
.checklist .tick{
  flex-shrink:0;width:22px;height:22px;border-radius:7px;display:grid;place-items:center;
  background:rgba(16,185,129,.12);color:#0a7f5f;margin-top:2px;
}
.checklist .tick svg{width:13px;height:13px}
.checklist strong{display:block;font-size:14.5px;color:var(--ink);margin-bottom:3px}
.checklist span{font-size:13.6px;color:var(--muted);line-height:1.7}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;margin:0 auto}
.faq-item{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--line-strong);box-shadow:var(--sh-2)}
.faq-item[open]{border-color:rgba(79,70,229,.32);box-shadow:0 12px 28px rgba(31,38,84,.1)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 50px 16px 18px;position:relative;
  font-size:15px;font-weight:700;color:var(--ink);min-height:48px;display:flex;align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:18px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:translateY(-70%) rotate(45deg);transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-item .faq-body{padding:0 18px 18px;font-size:14px;color:var(--muted);line-height:1.85}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.news-link{display:flex;flex-direction:column;height:100%}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:#e9ecf8}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-body{padding:18px;display:flex;flex-direction:column;gap:9px;flex:1}
.news-body h3{font-size:15.5px;line-height:1.5;font-weight:800;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:13.6px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-date{font-size:12.5px;color:#8b93b3;margin-top:auto;padding-top:6px}
.news-empty{
  text-align:center;padding:36px 20px;border:1px dashed var(--line-strong);border-radius:var(--r-lg);
  color:var(--muted);background:var(--paper);font-size:14px;
}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:linear-gradient(120deg,#3b32c9 0%,#5b4ce6 46%,#0e8fc4 100%);
  color:#eef1ff;padding:44px 40px;box-shadow:var(--sh-3);
}
.cta-band::after{
  content:"";position:absolute;width:420px;height:420px;right:-120px;top:-150px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.28),transparent 68%);pointer-events:none;
}
.cta-band h2{color:#fff;font-size:clamp(20px,2.4vw,27px);line-height:1.4;margin-bottom:12px;position:relative;z-index:2}
.cta-band p{font-size:14.5px;color:#d6dcff;max-width:640px;line-height:1.85;position:relative;z-index:2}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;position:relative;z-index:2}
.cta-band .btn-outline{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.38);color:#fff}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.22);border-color:#fff;color:#fff}
.cta-band .btn-primary{background:#fff;color:#3b32c9;box-shadow:0 10px 26px rgba(6,10,40,.28)}
.cta-band .btn-primary:hover{box-shadow:0 16px 34px rgba(6,10,40,.34)}
.cta-note{position:relative;z-index:2;margin-top:18px;font-size:12.8px;color:#c3caff}

/* ---------- footer ---------- */
.site-footer{background:#0b1024;color:#a9b1d4;padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding-bottom:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#fff;font-size:15.5px;margin-bottom:14px}
.footer-about{font-size:13.6px;line-height:1.85;color:#8f98c0;max-width:330px}
.footer-col h4{color:#fff;font-size:14px;font-weight:800;margin-bottom:14px;letter-spacing:.02em}
.footer-col a{display:block;font-size:13.6px;color:#9aa3c9;padding:5px 0;transition:color .18s ease,transform .18s ease}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:18px 0;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.8px;color:#7d86ad;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .page-hero-inner{grid-template-columns:1fr;gap:32px;padding:44px 0 56px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .split{gap:30px}
}
@media (max-width:860px){
  .nav-links{display:none}
  .nav-actions{display:none}
  .nav-burger{display:flex}
  .split{grid-template-columns:1fr}
  .split-media{order:-1}
  .section{padding:50px 0}
}
@media (max-width:640px){
  body{font-size:14.5px}
  .grid-3,.grid-4,.grid-2,.news-grid,.steps,.stat-strip{grid-template-columns:1fr}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .cta-band{padding:32px 22px}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .page-hero h1{font-size:26px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .card-body,.feature,.step{padding:18px 16px}
  .stat-card{padding:16px}
  .stat-card .num{font-size:23px}
}

/* roulang page: category2 */
:root{
 --ink:#0e1327;
 --ink-soft:#2b3150;
 --muted:#6b7290;
 --line:#e6e8f4;
 --line-strong:#d3d8ee;
 --paper:#ffffff;
 --bg:#f5f6fc;
 --bg-2:#eef0fa;
 --brand:#4f46e5;
 --brand-2:#0ea5e9;
 --brand-3:#7c3aed;
 --accent:#f59e0b;
 --ok:#10b981;
 --grad:linear-gradient(120deg,#4f46e5 0%,#6d5cf6 45%,#0ea5e9 100%);
 --grad-soft:linear-gradient(120deg,rgba(79,70,229,.10),rgba(14,165,233,.10));
 --r-sm:8px;
 --r-md:12px;
 --r-lg:18px;
 --r-xl:26px;
 --sh-1:0 1px 2px rgba(16,20,40,.05),0 6px 18px rgba(16,20,40,.05);
 --sh-2:0 10px 30px rgba(31,38,84,.12);
 --sh-3:0 18px 50px rgba(31,38,84,.18);
 --max:1180px;
}
*,*::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",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15px;
 line-height:1.78;
 color:var(--ink-soft);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:3px solid rgba(79,70,229,.45);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.88);
 backdrop-filter:blur(16px);
 -webkit-backdrop-filter:blur(16px);
 border-bottom:1px solid rgba(230,232,244,.9);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(16,20,40,.09);background:rgba(255,255,255,.96)}
.nav{height:64px;display:flex;align-items:center;gap:16px}
.logo{display:flex;align-items:center;gap:9px;flex-shrink:0;font-weight:800;color:var(--ink);font-size:15.5px;letter-spacing:-.02em}
.logo-mark{
 width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
 background:var(--grad);color:#fff;box-shadow:0 6px 16px rgba(79,70,229,.32);flex-shrink:0;
}
.logo-mark svg{width:18px;height:18px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-link{
 display:inline-flex;align-items:center;height:36px;padding:0 13px;border-radius:9px;
 font-size:14.5px;font-weight:600;color:var(--ink-soft);transition:.18s ease;white-space:nowrap;
}
.nav-link:hover{background:#f0f2fa;color:var(--brand)}
.nav-link.is-active{color:var(--brand);background:rgba(79,70,229,.09)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-burger{
 display:none;margin-left:auto;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
 background:#fff;align-items:center;justify-content:center;cursor:pointer;transition:.18s;
}
.nav-burger:hover{border-color:var(--line-strong);background:#f7f8fe}
.nav-burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
.nav-burger span::before{top:-6px}
.nav-burger span::after{top:6px}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;padding:10px 20px 20px}
.mobile-menu.is-open{display:block}
.mobile-menu a{display:block;padding:12px 4px;font-weight:600;color:var(--ink-soft);border-bottom:1px solid #f1f3fb;min-height:44px}
.mobile-menu a:last-of-type{border-bottom:0}
.mobile-menu a.is-active{color:var(--brand)}
.mobile-menu .m-btn{margin-top:14px;width:100%}

/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 height:42px;padding:0 18px;border-radius:10px;border:1px solid transparent;
 font-size:14.5px;font-weight:700;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
 white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(79,70,229,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 13px 28px rgba(79,70,229,.36)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;border-color:var(--line-strong);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-ghost{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.32);color:#eef1ff}
.btn-ghost:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.52);transform:translateY(-2px)}
.btn-lg{height:48px;padding:0 24px;font-size:15px}

/* ---------- hero (帮助中心变体) ---------- */
.hero{
 position:relative;overflow:hidden;color:#e9ecff;text-align:center;
 background:#0b1024 url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.hero::before{
 content:"";position:absolute;inset:0;
 background:linear-gradient(150deg,rgba(9,13,32,.97) 0%,rgba(19,25,62,.94) 48%,rgba(79,70,229,.66) 100%);
}
.hero::after{
 content:"";position:absolute;width:640px;height:640px;left:50%;top:-330px;transform:translateX(-50%);
 border-radius:50%;background:radial-gradient(circle,rgba(14,165,233,.38),transparent 66%);
 filter:blur(20px);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:52px 0 64px;max-width:860px;margin:0 auto}
.crumb{display:flex;justify-content:center;gap:8px;font-size:12.5px;color:#aab2d8;margin-bottom:18px;flex-wrap:wrap}
.crumb a:hover{color:#fff}
.crumb span{color:#7f88b4}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
 background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
 font-size:12.5px;font-weight:700;letter-spacing:.03em;color:#dfe4ff;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:#38e2b0;box-shadow:0 0 0 4px rgba(56,226,176,.2)}
.hero h1{
 color:#fff;margin:18px 0 14px;font-size:clamp(25px,3.4vw,40px);line-height:1.32;letter-spacing:-.02em;
 text-shadow:0 2px 24px rgba(4,8,26,.35);
}
.hero-lead{font-size:15.5px;line-height:1.85;color:#c6cdec;max-width:700px;margin:0 auto}
.hero-search{
 display:flex;gap:8px;max-width:640px;margin:26px auto 0;padding:8px;
 background:rgba(255,255,255,.96);border-radius:14px;box-shadow:0 18px 44px rgba(4,8,26,.32);
}
.hero-search input{
 flex:1;min-width:0;height:44px;border:0;outline:none;background:transparent;
 padding:0 12px;font-size:14.5px;color:var(--ink);
}
.hero-search input::placeholder{color:#98a0bd}
.hero-search button{height:44px;padding:0 18px;border-radius:10px;border:0;cursor:pointer;font-weight:700;color:#fff;background:var(--grad);transition:.18s}
.hero-search button:hover{filter:brightness(1.06);transform:translateY(-1px)}
.hero-chips{display:flex;flex-wrap:wrap;justify-content:center;gap:9px;margin-top:18px}
.chip{
 display:inline-flex;align-items:center;min-height:34px;padding:0 14px;border-radius:999px;
 font-size:12.5px;font-weight:600;color:#d7dcf7;background:rgba(255,255,255,.10);
 border:1px solid rgba(255,255,255,.22);transition:.18s ease;
}
.chip:hover{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.44);transform:translateY(-2px);color:#fff}
.hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:9px;margin-top:22px}
.tag{
 display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:999px;
 font-size:12.5px;font-weight:600;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#d7dcf7;
}

/* ---------- stat strip ---------- */
.stat-strip{position:relative;z-index:3;margin-top:-32px}
.stat-grid{
 display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
 background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
 padding:18px 20px;box-shadow:var(--sh-2);
}
.stat-item{text-align:center;padding:6px 4px;border-right:1px dashed var(--line)}
.stat-item:last-child{border-right:0}
.stat-num{font-size:22px;font-weight:800;color:var(--brand);letter-spacing:-.02em;line-height:1.2}
.stat-label{font-size:12.5px;color:var(--muted);margin-top:4px}

/* ---------- section ---------- */
.section{padding:66px 0}
.section-alt{background:var(--bg-2)}
.section-head{max-width:720px;margin-bottom:34px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:800;letter-spacing:.06em;
 color:var(--brand);text-transform:uppercase;margin-bottom:10px;
}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:3px;background:var(--grad)}
.section-head.center .eyebrow::before{display:none}
.section-title{font-size:clamp(21px,2.4vw,29px);line-height:1.36;margin-bottom:12px}
.section-desc{color:var(--muted);font-size:14.5px}

/* ---------- cards ---------- */
.card-grid{display:grid;gap:18px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;
 box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#cdd4f2}
.icon-badge{
 width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
 background:var(--grad-soft);color:var(--brand);border:1px solid rgba(79,70,229,.14);margin-bottom:14px;
}
.icon-badge svg{width:21px;height:21px}
.card h3{font-size:16.5px;margin-bottom:8px}
.card p{font-size:14px;color:var(--muted);line-height:1.78}
.card-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.pill{
 display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
 font-size:12px;font-weight:600;background:#f1f3fb;color:#4a5170;border:1px solid #e6e9f6;
}
.pill-brand{background:rgba(79,70,229,.09);color:var(--brand);border-color:rgba(79,70,229,.16)}

/* ---------- flow ---------- */
.flow-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:start}
.flow-list{list-style:none;margin:0;padding:0;position:relative}
.flow-step{
 position:relative;padding:0 0 24px 56px;
}
.flow-step:last-child{padding-bottom:0}
.flow-step::before{
 content:attr(data-step);position:absolute;left:0;top:0;width:38px;height:38px;border-radius:12px;
 display:grid;place-items:center;font-size:14px;font-weight:800;color:#fff;background:var(--grad);
 box-shadow:0 8px 18px rgba(79,70,229,.28);
}
.flow-step::after{
 content:"";position:absolute;left:18px;top:44px;bottom:6px;width:2px;background:linear-gradient(180deg,rgba(79,70,229,.28),rgba(79,70,229,.04));
}
.flow-step:last-child::after{display:none}
.flow-step h3{font-size:16px;margin-bottom:6px}
.flow-step p{font-size:14px;color:var(--muted)}
.flow-media{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);padding:14px;box-shadow:var(--sh-2);
}
.flow-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg)}
.flow-media .media-cap{font-size:13px;color:var(--muted);padding:12px 6px 4px;line-height:1.7}

/* ---------- table ---------- */
.table-wrap{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
 box-shadow:var(--sh-1);overflow-x:auto;
}
table.rate-table{width:100%;border-collapse:collapse;min-width:660px}
table.rate-table th,table.rate-table td{padding:14px 16px;text-align:left;font-size:14px;border-bottom:1px solid var(--line)}
table.rate-table th{background:#f7f8fe;color:var(--ink);font-weight:700;font-size:13.5px;white-space:nowrap}
table.rate-table td:first-child{font-weight:700;color:var(--ink)}
table.rate-table tbody tr{transition:background .18s}
table.rate-table tbody tr:hover{background:#f8f9ff}
table.rate-table tbody tr:last-child td{border-bottom:0}
.rate-num{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;background:rgba(79,70,229,.09);color:var(--brand);font-weight:700;font-size:12.5px}

/* ---------- mistake cards ---------- */
.mistake-card{display:flex;gap:16px;align-items:flex-start}
.mistake-thumb{width:88px;height:88px;flex-shrink:0;border-radius:14px;overflow:hidden;border:1px solid var(--line)}
.mistake-thumb img{width:100%;height:100%;object-fit:cover}
.mistake-body h3{font-size:15.5px;margin-bottom:6px}
.mistake-body p{font-size:13.5px;color:var(--muted)}

/* ---------- voices ---------- */
.voice-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-1);transition:.2s}
.voice-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#cdd4f2}
.voice-quote{font-size:14px;color:var(--ink-soft);line-height:1.8}
.voice-user{display:flex;align-items:center;gap:10px;margin-top:16px;padding-top:14px;border-top:1px dashed var(--line)}
.avatar{
 width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:13px;
 color:#fff;background:var(--grad);flex-shrink:0;
}
.voice-name{font-size:13.5px;font-weight:700;color:var(--ink)}
.voice-meta{font-size:12px;color:var(--muted)}

/* ---------- channel matrix ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.channel-card{
 display:block;position:relative;overflow:hidden;
 background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;
 box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.channel-card::after{
 content:"";position:absolute;right:-40px;top:-40px;width:120px;height:120px;border-radius:50%;
 background:var(--grad-soft);opacity:.9;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#cdd4f2}
.channel-card h3{font-size:17px;margin-bottom:8px;position:relative;z-index:2}
.channel-card p{font-size:13.5px;color:var(--muted);position:relative;z-index:2}
.channel-more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:13px;font-weight:700;color:var(--brand);position:relative;z-index:2}
.channel-more svg{width:15px;height:15px}

/* ---------- news list ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.news-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
 box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#cdd4f2}
.news-link{display:block;height:100%}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:#eef0fa}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-body{padding:18px 20px 20px}
.news-tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:11.5px;font-weight:700;background:rgba(14,165,233,.10);color:#0b7ea8;margin-bottom:10px}
.news-body h3{font-size:15.5px;line-height:1.55;margin-bottom:8px}
.news-body p{font-size:13.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-date{display:block;margin-top:12px;font-size:12px;color:#9aa1bd}
.news-empty{
 background:#fff;border:1px dashed var(--line-strong);border-radius:var(--r-lg);
 padding:34px;text-align:center;color:var(--muted);font-size:14px;
}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
 box-shadow:var(--sh-1);overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:#cdd4f2;box-shadow:var(--sh-2)}
.faq-item summary{
 list-style:none;cursor:pointer;padding:17px 20px;font-weight:700;font-size:15px;color:var(--ink);
 display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:52px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";font-size:19px;font-weight:700;color:var(--brand);flex-shrink:0;transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open] summary{color:var(--brand)}
.faq-answer{padding:0 20px 18px;font-size:14px;color:var(--muted);line-height:1.8}
.faq-empty{display:none;text-align:center;color:var(--muted);font-size:14px;padding:20px 0}

/* ---------- cta ---------- */
.cta-band{
 position:relative;overflow:hidden;border-radius:var(--r-xl);padding:44px 36px;color:#eef1ff;
 background:#101532 url('/assets/images/backpic/back-6.webp') center/cover no-repeat;
 box-shadow:var(--sh-3);
}
.cta-band::before{
 content:"";position:absolute;inset:0;
 background:linear-gradient(115deg,rgba(11,16,36,.95) 0%,rgba(30,36,86,.9) 52%,rgba(79,70,229,.7) 100%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:center}
.cta-inner h2{color:#fff;font-size:clamp(20px,2.3vw,27px);line-height:1.4;margin-bottom:10px}
.cta-inner p{color:#c3cbec;font-size:14.5px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.cta-note{font-size:12.5px;color:#a7b0d8;margin-top:12px}

/* ---------- footer ---------- */
.site-footer{background:#0b1024;color:#b9c0dd;padding:54px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:9px;font-weight:800;color:#fff;font-size:15.5px;margin-bottom:14px}
.footer-about{font-size:13.5px;line-height:1.85;color:#98a0c4;max-width:330px}
.footer-col h4{color:#fff;font-size:14px;margin-bottom:14px;letter-spacing:.02em}
.footer-col a{display:block;font-size:13.5px;color:#98a0c4;padding:6px 0;transition:color .18s,transform .18s}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
 display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
 margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
 font-size:12.5px;color:#7d86ad;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
 .hero-inner{padding:44px 0 56px}
 .grid-4{grid-template-columns:repeat(2,1fr)}
 .flow-wrap{grid-template-columns:1fr;gap:26px}
 .news-grid,.channel-grid,.grid-3{grid-template-columns:repeat(2,1fr)}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
 .cta-inner{grid-template-columns:1fr}
 .cta-actions{justify-content:flex-start}
}
@media (max-width:980px){
 .nav-links,.nav-actions{display:none}
 .nav-burger{display:inline-flex}
}
@media (max-width:768px){
 .section{padding:48px 0}
 .stat-grid{grid-template-columns:repeat(2,1fr);gap:10px;padding:14px}
 .stat-item{border-right:0;border-bottom:1px dashed var(--line);padding-bottom:10px}
 .stat-item:nth-child(n+3){border-bottom:0;padding-bottom:0}
 .grid-2{grid-template-columns:1fr}
 .news-grid,.channel-grid,.grid-3,.grid-4{grid-template-columns:1fr}
 .hero-search{flex-direction:column;padding:10px}
 .hero-search button{width:100%}
 .cta-band{padding:32px 22px}
 .footer-grid{grid-template-columns:1fr;gap:24px}
 .footer-bottom{flex-direction:column;gap:8px}
 .mistake-card{flex-direction:column}
 .mistake-thumb{width:100%;height:150px}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .hero h1{font-size:23px}
 .hero-lead{font-size:14px}
 .stat-num{font-size:19px}
 .card{padding:18px}
 .btn{height:44px}
 .chip{font-size:12px}
}

/* roulang page: category3 */
:root{
 --ink:#0e1327;
 --ink-soft:#2b3150;
 --muted:#6b7290;
 --line:#e6e8f4;
 --line-strong:#d3d8ee;
 --paper:#ffffff;
 --bg:#f5f6fc;
 --bg-2:#eef0fa;
 --brand:#4f46e5;
 --brand-2:#0ea5e9;
 --brand-3:#7c3aed;
 --accent:#f59e0b;
 --ok:#10b981;
 --grad:linear-gradient(120deg,#4f46e5 0%,#6d5cf6 45%,#0ea5e9 100%);
 --grad-soft:linear-gradient(120deg,rgba(79,70,229,.10),rgba(14,165,233,.10));
 --r-sm:8px;
 --r-md:12px;
 --r-lg:18px;
 --r-xl:26px;
 --sh-1:0 1px 2px rgba(16,20,40,.05),0 6px 18px rgba(16,20,40,.05);
 --sh-2:0 10px 30px rgba(31,38,84,.12);
 --sh-3:0 18px 50px rgba(31,38,84,.18);
 --max:1180px;
}
*,*::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",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15px;
 line-height:1.78;
 color:var(--ink-soft);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--ink);letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.88);
 backdrop-filter:blur(16px);
 -webkit-backdrop-filter:blur(16px);
 border-bottom:1px solid rgba(230,232,244,.9);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(16,20,40,.09);background:rgba(255,255,255,.96)}
.nav{height:64px;display:flex;align-items:center;gap:16px}
.logo{display:flex;align-items:center;gap:9px;flex-shrink:0;font-weight:800;color:var(--ink);font-size:15.5px;letter-spacing:-.02em}
.logo-mark{
 width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
 background:var(--grad);color:#fff;box-shadow:0 6px 16px rgba(79,70,229,.32);flex-shrink:0;
}
.logo-mark svg{width:18px;height:18px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-link{
 display:inline-flex;align-items:center;height:36px;padding:0 13px;border-radius:9px;
 font-size:14.5px;font-weight:600;color:var(--ink-soft);transition:.18s ease;white-space:nowrap;
}
.nav-link:hover{background:#f0f2fa;color:var(--brand)}
.nav-link.is-active{color:var(--brand);background:rgba(79,70,229,.09)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-burger{
 display:none;margin-left:auto;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
 background:#fff;align-items:center;justify-content:center;cursor:pointer;transition:.18s;
}
.nav-burger:hover{border-color:var(--line-strong);background:#f7f8fe}
.nav-burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
.nav-burger span::before{top:-6px}
.nav-burger span::after{top:6px}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;padding:10px 20px 20px}
.mobile-menu.is-open{display:block}
.mobile-menu a{display:block;padding:12px 4px;font-weight:600;color:var(--ink-soft);border-bottom:1px solid #f1f3fb;min-height:44px}
.mobile-menu a:last-of-type{border-bottom:0}
.mobile-menu .m-btn{margin-top:14px;width:100%}

/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 height:42px;padding:0 18px;border-radius:10px;border:1px solid transparent;
 font-size:14.5px;font-weight:700;cursor:pointer;
 transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
 white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(79,70,229,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 13px 28px rgba(79,70,229,.36)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;border-color:var(--line-strong);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.3);color:#eef1ff}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.5);transform:translateY(-2px)}
.btn-lg{height:48px;padding:0 24px;font-size:15px}
.btn-sm{height:36px;padding:0 14px;font-size:13.5px;border-radius:9px}
.btn-block{width:100%}

/* ---------- hero ---------- */
.hero{
 position:relative;overflow:hidden;color:#e9ecff;
 background:#0b1024 url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
}
.hero::before{
 content:"";position:absolute;inset:0;
 background:linear-gradient(112deg,rgba(9,13,32,.97) 0%,rgba(17,22,58,.93) 46%,rgba(79,70,229,.62) 100%);
}
.hero::after{
 content:"";position:absolute;width:620px;height:620px;right:-160px;top:-220px;border-radius:50%;
 background:radial-gradient(circle,rgba(14,165,233,.42),transparent 66%);filter:blur(18px);pointer-events:none;
}
.hero-grid{
 position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;
 gap:48px;align-items:center;padding:64px 0 88px;
}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
 background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
 font-size:12.5px;font-weight:700;letter-spacing:.03em;color:#dfe4ff;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:#38e2b0;box-shadow:0 0 0 4px rgba(56,226,176,.2)}
.hero h1{
 color:#fff;margin:18px 0 16px;font-size:clamp(26px,3.4vw,40px);line-height:1.3;
 text-shadow:0 2px 24px rgba(4,8,26,.35);
}
.hero-lead{font-size:15.5px;line-height:1.85;color:#c6cdec;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.tag{
 display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:999px;
 font-size:12.5px;font-weight:600;background:rgba(255,255,255,.1);
 border:1px solid rgba(255,255,255,.2);color:#d7dcf7;
}
.tag-plain{background:#f0f2fa;border-color:#e2e5f3;color:#4a5170}

/* hero panel: 对比选型 */
.hero-panel{
 background:rgba(255,255,255,.97);
 border:1px solid rgba(255,255,255,.7);
 border-radius:var(--r-xl);
 padding:22px;
 box-shadow:0 26px 60px rgba(4,8,26,.45);
 color:var(--ink-soft);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.panel-kicker{font-size:12px;font-weight:800;letter-spacing:.08em;color:var(--brand);text-transform:uppercase}
.panel-head h2{font-size:15px;color:var(--ink);font-weight:800}
.tier-featured{
 position:relative;border-radius:var(--r-lg);padding:18px;
 background:var(--grad-soft);border:1px solid rgba(79,70,229,.28);
 box-shadow:0 12px 26px rgba(79,70,229,.14);
}
.tier-featured .tier-top{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.tier-name{font-size:16.5px;font-weight:800;color:var(--ink)}
.badge-reco{
 display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
 background:var(--grad);color:#fff;font-size:11.5px;font-weight:800;letter-spacing:.04em;
}
.tier-featured p{font-size:13.5px;line-height:1.72;color:var(--ink-soft);margin-bottom:14px}
.tier-mini{
 display:flex;align-items:center;gap:12px;padding:13px 4px;
 border-bottom:1px dashed var(--line-strong);
}
.tier-mini:last-child{border-bottom:0;padding-bottom:0}
.tier-mini .tier-dot{
 width:30px;height:30px;border-radius:9px;display:grid;place-items:center;flex-shrink:0;
 background:#f0f2fa;color:var(--brand);font-size:12px;font-weight:800;
}
.tier-mini strong{display:block;font-size:13.5px;color:var(--ink);font-weight:800}
.tier-mini span.note{font-size:12.5px;color:var(--muted);line-height:1.6;display:block}

/* ---------- sections ---------- */
.section{padding:72px 0}
.section-tight{padding:56px 0}
.section-white{background:var(--paper)}
.section-alt{background:var(--bg-2)}
.section-head{max-width:760px;margin-bottom:34px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
 display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:800;
 letter-spacing:.1em;color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad)}
.section-title{margin:12px 0 10px;font-size:clamp(21px,2.5vw,29px);line-height:1.34}
.section-desc{color:var(--muted);font-size:14.5px;max-width:720px}

/* ---------- grids & cards ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{
 background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:24px;box-shadow:var(--sh-1);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.card h3{font-size:16.5px;line-height:1.45;margin-bottom:8px}
.card p{font-size:14px;color:var(--muted);line-height:1.78}
.card-icon{
 width:42px;height:42px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
 background:var(--grad-soft);border:1px solid rgba(79,70,229,.14);color:var(--brand);
}
.card-icon svg{width:20px;height:20px}
.card-tag{
 display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
 background:#f2f4fc;border:1px solid #e3e7f6;color:#5a628a;
 font-size:11.5px;font-weight:700;margin-top:14px;
}

/* tier cards */
.tier-card{position:relative;display:flex;flex-direction:column}
.tier-card .tier-label{
 display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:800;
 letter-spacing:.06em;color:var(--brand);margin-bottom:10px;
}
.tier-card .tier-label i{
 width:8px;height:8px;border-radius:50%;background:var(--brand-2);display:inline-block;font-style:normal;
}
.tier-card.is-featured{
 border-color:rgba(79,70,229,.34);
 box-shadow:0 16px 38px rgba(79,70,229,.16);
 background:linear-gradient(180deg,rgba(79,70,229,.06),rgba(255,255,255,1) 46%);
}
.tier-card.is-featured::after{
 content:"推荐档位";position:absolute;top:-12px;right:20px;
 padding:3px 12px;border-radius:999px;background:var(--grad);color:#fff;
 font-size:11.5px;font-weight:800;letter-spacing:.05em;
 box-shadow:0 8px 18px rgba(79,70,229,.3);
}
.tier-card ul{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:9px}
.tier-card li{position:relative;padding-left:20px;font-size:13.5px;color:var(--muted);line-height:1.7}
.tier-card li::before{
 content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
 background:var(--grad);
}

/* scenes */
.scene-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.scene-card img{width:100%;height:172px;object-fit:cover}
.scene-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:8px}
.scene-body h3{font-size:16.5px}
.scene-body p{font-size:13.8px;color:var(--muted)}

/* flow */
.flow{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-xl);padding:10px 30px;box-shadow:var(--sh-1)}
.flow-step{display:grid;grid-template-columns:52px 1fr;gap:22px;padding:26px 0;border-bottom:1px dashed var(--line-strong)}
.flow-step:last-child{border-bottom:0}
.flow-num{
 width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
 background:var(--grad);color:#fff;font-weight:800;font-size:15px;
 box-shadow:0 10px 22px rgba(79,70,229,.26);
}
.flow-body h3{font-size:16px;margin-bottom:6px}
.flow-body p{font-size:14px;color:var(--muted)}

/* fixes list */
.fix-row{
 display:grid;grid-template-columns:180px 1fr;gap:22px;align-items:flex-start;
 background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:20px 24px;box-shadow:var(--sh-1);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.fix-row:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.fix-row h3{font-size:15.5px;color:var(--ink);display:flex;align-items:center;gap:9px}
.fix-row h3 i{
 width:9px;height:9px;border-radius:3px;background:var(--accent);display:inline-block;font-style:normal;flex-shrink:0;
}
.fix-row p{font-size:14px;color:var(--muted)}
.fix-list{display:grid;gap:14px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat{
 background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:22px 20px;box-shadow:var(--sh-1);
 transition:transform .2s ease,box-shadow .2s ease;
}
.stat:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.stat-num{font-size:26px;font-weight:800;color:var(--ink);letter-spacing:-.02em;line-height:1.2}
.stat-num em{font-style:normal;font-size:14px;color:var(--brand);margin-left:3px}
.stat-label{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.65}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.post-card{
 display:flex;flex-direction:column;gap:12px;
 background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
 padding:22px;box-shadow:var(--sh-1);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.post-card h3{font-size:15.5px;line-height:1.55;color:var(--ink)}
.post-card:hover h3{color:var(--brand)}
.post-card p{font-size:13.8px;color:var(--muted);line-height:1.75}
.post-meta{
 display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;
 border-top:1px dashed var(--line);padding-top:12px;font-size:12.5px;color:var(--muted);
}
.post-meta .pm-cat{color:var(--brand);font-weight:700}
.empty-note{
 padding:32px;border:1px dashed var(--line-strong);border-radius:var(--r-lg);
 background:var(--paper);color:var(--muted);text-align:center;font-size:14px;
}

/* faq */
.faq{display:grid;gap:14px;max-width:900px}
.faq-item{
 background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);
 padding:0 22px;box-shadow:var(--sh-1);transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(79,70,229,.32);box-shadow:var(--sh-2)}
.faq-item summary{
 list-style:none;cursor:pointer;padding:18px 0;font-weight:700;color:var(--ink);font-size:15px;
 display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;font-weight:600;color:var(--brand);transition:transform .2s ease}
.faq-item[open] summary::after{content:"−"}
.faq-body{padding:0 0 20px;font-size:14px;color:var(--muted);line-height:1.8}

/* cta band */
.cta-band{
 position:relative;overflow:hidden;color:#eef1ff;
 background:#0b1024 url('/assets/images/backpic/back-6.webp') center/cover no-repeat;
}
.cta-band::before{
 content:"";position:absolute;inset:0;
 background:linear-gradient(115deg,rgba(9,13,32,.96) 0%,rgba(24,28,70,.92) 52%,rgba(79,70,229,.66) 100%);
}
.cta-inner{
 position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
 gap:36px;padding:56px 0;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:clamp(21px,2.5vw,28px);line-height:1.36;margin-bottom:10px}
.cta-inner p{color:#c2c9e8;font-size:14.5px;max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:#0b1024;color:#9aa2c4;padding:56px 0 0;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:9px;color:#fff;font-weight:800;font-size:15.5px;margin-bottom:14px}
.footer-about{font-size:13.8px;line-height:1.85;color:#8f97bb;max-width:340px}
.footer-col h4{color:#fff;font-size:14px;font-weight:800;margin-bottom:14px;letter-spacing:.02em}
.footer-col a{display:block;font-size:13.8px;color:#9aa2c4;padding:6px 0;transition:color .18s ease,transform .18s ease;min-height:32px}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{
 display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
 border-top:1px solid rgba(255,255,255,.09);padding:20px 0 26px;
 font-size:13px;color:#7c84a8;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
 .nav-links{display:none}
 .nav-actions{display:none}
 .nav-burger{display:flex}
 .hero-grid{grid-template-columns:1fr;gap:36px;padding:52px 0 66px}
 .hero-lead{max-width:none}
 .grid-4{grid-template-columns:repeat(2,1fr)}
 .stats{grid-template-columns:repeat(2,1fr)}
 .news-grid{grid-template-columns:repeat(2,1fr)}
 .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
 .section{padding:54px 0}
 .section-tight{padding:44px 0}
 .grid-3{grid-template-columns:1fr}
 .grid-2{grid-template-columns:1fr}
 .flow{padding:6px 20px}
 .flow-step{grid-template-columns:44px 1fr;gap:16px;padding:22px 0}
 .flow-num{width:40px;height:40px;border-radius:12px;font-size:14px}
 .fix-row{grid-template-columns:1fr;gap:8px}
 .cta-inner{padding:46px 0;gap:22px}
 .hero-panel{padding:18px}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .grid-4{grid-template-columns:1fr}
 .stats{grid-template-columns:1fr}
 .news-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .hero-tags{gap:8px}
 .tag{font-size:12px;height:28px;padding:0 11px}
 .btn{height:44px}
 .btn-sm{height:38px}
 .hero-actions .btn{width:100%}
 .cta-actions{width:100%}
 .cta-actions .btn{width:100%}
 .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}