/* roulang page: index */
:root{
  --bg:#f5f7fb;
  --surface:#ffffff;
  --ink:#0e1a2b;
  --ink-soft:#5a6b82;
  --line:#e4e9f2;
  --brand:#0e7c74;
  --brand-deep:#0a5d57;
  --brand-soft:#e6f4f2;
  --gold:#c8912f;
  --radius:14px;
  --shadow-sm:0 2px 8px rgba(15,27,45,.06);
  --shadow-md:0 14px 34px rgba(15,27,45,.11);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:15px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4,p,figure{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--container);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,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(15,27,45,.09)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),#12a89b);
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 6px 14px rgba(14,124,116,.28);
}
.brand-text{font-size:18px;font-weight:800;letter-spacing:.6px;color:var(--ink)}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
  padding:8px 14px;border-radius:9px;font-size:14.5px;font-weight:500;
  color:var(--ink-soft);transition:color .2s,background .2s;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);background:var(--brand-soft);font-weight:700}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:#fff;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:8px;font-weight:600;font-size:14.5px;padding:11px 20px;
  min-height:42px;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(14,124,116,.24)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 12px 24px rgba(14,124,116,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(14,124,116,.24)}
.btn-primary.is-done{background:#1e9c70;box-shadow:none;cursor:default}
.btn-outline{border-color:var(--line);background:#fff;color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-ghost{border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px;min-height:38px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:#0b1c2b;color:#fff;padding:74px 0 168px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.32;transform:scale(1.04)}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(9,26,38,.86) 0%,rgba(9,26,38,.93) 55%,#0a1e2d 100%);
}
.hero-inner{position:relative;z-index:2;max-width:840px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  color:#c9f2ec;padding:6px 14px;border-radius:999px;font-size:13px;letter-spacing:.4px;
}
.hero-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:#37d6c2;box-shadow:0 0 0 4px rgba(55,214,194,.18)}
.hero h1{
  font-size:clamp(27px,4.1vw,44px);line-height:1.32;font-weight:800;
  letter-spacing:-.5px;margin:20px 0 18px;
}
.hero-lead{font-size:15.5px;line-height:1.9;color:#c6d6e3;max-width:790px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#dbe9f2;
}
.hero-points{display:flex;flex-wrap:wrap;gap:26px;margin-top:26px;font-size:13.5px;color:#9fb7c8}
.hero-points span{display:inline-flex;align-items:center;gap:7px}
.hero-points svg{width:16px;height:16px;stroke:#37d6c2;fill:none;stroke-width:1.8}

/* ---------- coupon band ---------- */
.coupon-band{position:relative;z-index:6;margin-top:-116px;padding-bottom:10px}
.voucher-wall{display:grid;grid-template-columns:.95fr 1.5fr .95fr;gap:18px;align-items:stretch}
.voucher{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;
  box-shadow:var(--shadow-sm);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.voucher-side:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.v-badge{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.6px;
  color:var(--brand);background:var(--brand-soft);padding:4px 11px;border-radius:999px;
}
.voucher-side .v-name{font-size:17px;font-weight:800;margin:14px 0 8px;line-height:1.5}
.voucher-side .v-desc{font-size:13.5px;color:var(--ink-soft);line-height:1.75;margin-bottom:18px;flex:1}
.voucher-main{
  background:linear-gradient(140deg,#0e2b3c 0%,#134a52 58%,#0c3340 100%);
  color:#fff;border:1px solid rgba(214,164,74,.42);
  border-radius:18px;padding:26px 28px;
  box-shadow:0 26px 50px rgba(9,32,44,.3);
}
.voucher-main:hover{border-color:rgba(230,190,110,.7)}
.v-main-grid{display:grid;grid-template-columns:.85fr 1.45fr;gap:26px;align-items:center;height:100%}
.v-left{text-align:center;border-right:1px dashed rgba(255,255,255,.22);padding-right:26px}
.v-amount{font-size:56px;font-weight:800;line-height:1;color:#f2cb79;letter-spacing:-2px;margin:12px 0 4px}
.v-amount span{font-size:18px;font-weight:600;margin-left:4px;letter-spacing:0}
.v-sub{font-size:13.5px;color:#a9c3ce;letter-spacing:.5px}
.v-title{font-size:19px;font-weight:800;line-height:1.5;margin-bottom:10px}
.v-desc{font-size:13.5px;color:#a9c3ce;line-height:1.78;margin-bottom:16px}
.v-note{font-size:12.5px;color:#7f9dab;margin-top:10px}

/* ---------- sections ---------- */
.section{padding:74px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:38px}
.kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:800;color:var(--brand);letter-spacing:1.6px;
}
.kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand)}
.section-title{font-size:clamp(21px,2.8vw,30px);font-weight:800;letter-spacing:-.3px;margin:12px 0 12px;line-height:1.4}
.section-desc{color:var(--ink-soft);font-size:15px;line-height:1.85}

/* ---------- grids ---------- */
.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:20px}

/* ---------- cards ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.card-media{aspect-ratio:16/10;overflow:hidden;background:#eef2f6}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-media img{transform:scale(1.05)}
.card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-tag{align-self:flex-start;font-size:12px;font-weight:700;color:var(--brand);background:var(--brand-soft);padding:4px 10px;border-radius:999px}
.card-title{font-size:16.5px;font-weight:700;line-height:1.55}
.card-text{font-size:14px;color:var(--ink-soft);line-height:1.78}

/* ---------- story ---------- */
.story{display:grid;grid-template-columns:1.02fr .98fr;gap:52px;align-items:center}
.story-media img{border-radius:16px;box-shadow:var(--shadow-md);aspect-ratio:4/3;object-fit:cover;width:100%}
.story-body p{color:var(--ink-soft);font-size:15px;line-height:1.88;margin-bottom:14px}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}
.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 14px;text-align:center}
.stat b{display:block;font-size:23px;font-weight:800;color:var(--brand);line-height:1.2}
.stat span{font-size:12.5px;color:var(--ink-soft)}

/* ---------- channel cards ---------- */
.channel{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.channel:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe0db}
.channel-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);
  display:grid;place-items:center;margin-bottom:16px;
}
.channel-icon svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.channel h3{font-size:17.5px;font-weight:800;margin-bottom:9px}
.channel p{font-size:14px;color:var(--ink-soft);line-height:1.78;margin-bottom:14px}
.channel-link{font-size:13.5px;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.channel:hover .channel-link{gap:10px}
.channel-link svg{width:15px;height:15px;stroke:var(--brand);fill:none;stroke-width:2}

/* ---------- vip / benefit ---------- */
.benefit{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.benefit:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.benefit-icon{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;margin-bottom:14px;
  background:linear-gradient(140deg,#eaf6f4,#d9efeb);
}
.benefit-icon svg{width:21px;height:21px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.benefit h3{font-size:16px;font-weight:700;margin-bottom:8px}
.benefit p{font-size:13.8px;color:var(--ink-soft);line-height:1.78}

/* ---------- steps ---------- */
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.step-num{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand);color:#fff;font-weight:800;font-size:15px;margin-bottom:16px;
  box-shadow:0 8px 16px rgba(14,124,116,.25);
}
.step h3{font-size:16.5px;font-weight:700;margin-bottom:9px}
.step p{font-size:14px;color:var(--ink-soft);line-height:1.78}

/* ---------- scene ---------- */
.scene{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-sm);display:flex;gap:14px;align-items:flex-start;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.scene:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.scene-dot{
  flex:0 0 auto;width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-weight:800;font-size:13.5px;
}
.scene h3{font-size:15.5px;font-weight:700;margin-bottom:6px}
.scene p{font-size:13.8px;color:var(--ink-soft);line-height:1.75}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:1.65fr .95fr;gap:34px;align-items:start}
.news-list{display:flex;flex-direction:column;gap:14px}
.news-item{
  display:block;background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:18px 20px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.news-cat{font-size:12px;font-weight:700;color:var(--brand);background:var(--brand-soft);padding:3px 10px;border-radius:999px}
.news-date{font-size:12.5px;color:#93a3b6}
.news-item h3{font-size:16.5px;font-weight:700;margin:10px 0 7px;line-height:1.55}
.news-item p{font-size:14px;color:var(--ink-soft);line-height:1.75}
.news-empty{background:#fff;border:1px dashed var(--line);border-radius:12px;padding:26px;color:var(--ink-soft);font-size:14px;text-align:center}
.news-side{background:linear-gradient(150deg,#0f2b3d,#12454e);color:#fff;border-radius:16px;padding:26px 24px;box-shadow:0 18px 40px rgba(9,32,44,.22)}
.news-side h3{font-size:17px;font-weight:800;margin-bottom:6px}
.news-side .side-sub{font-size:13px;color:#9db6c4;margin-bottom:18px;line-height:1.7}
.side-item{display:block;padding:12px 0;border-top:1px solid rgba(255,255,255,.12);transition:opacity .2s}
.side-item:hover{opacity:.82}
.side-item strong{display:block;font-size:14.5px;font-weight:600;line-height:1.6;color:#eaf3f7}
.side-item span{font-size:12.5px;color:#8fa9ba}
.side-tip{margin-top:18px;font-size:12.5px;color:#8fa9ba;line-height:1.75}

/* ---------- guards ---------- */
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.guard-item{
  display:flex;gap:12px;align-items:flex-start;background:#fff;
  border:1px solid var(--line);border-radius:12px;padding:18px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.guard-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:#cfe3e0}
.guard-item svg{flex:0 0 auto;width:20px;height:20px;stroke:var(--brand);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;margin-top:2px}
.guard-item strong{display:block;font-size:14.5px;font-weight:700;margin-bottom:4px}
.guard-item p{font-size:13.2px;color:var(--ink-soft);line-height:1.7}

/* ---------- reviews ---------- */
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-weight:800;font-size:15px;
}
.review-name{font-size:14.5px;font-weight:700}
.review-role{font-size:12.5px;color:#93a3b6}
.stars{display:flex;gap:3px;margin-bottom:12px}
.stars svg{width:15px;height:15px;fill:#e5b352;stroke:none}
.review-card p{font-size:14px;color:var(--ink-soft);line-height:1.82}

/* ---------- cta ---------- */
.cta-band{
  background:linear-gradient(135deg,#0f2b3d 0%,#11484f 62%,#0d3541 100%);
  border-radius:20px;padding:46px 44px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  box-shadow:0 26px 54px rgba(9,32,44,.26);
}
.cta-band h2{font-size:clamp(21px,2.6vw,28px);font-weight:800;line-height:1.45;margin-bottom:12px}
.cta-band p{font-size:14.5px;color:#a9c3ce;line-height:1.82;max-width:600px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:#0b1c2b;color:#9db2c4;padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:38px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand span{font-size:17px;font-weight:800;color:#fff;letter-spacing:.5px}
.footer-about{font-size:13.5px;line-height:1.85;color:#8fa5b7;max-width:340px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.5px}
.footer-link{display:block;font-size:13.8px;color:#9db2c4;margin-bottom:11px;transition:color .2s,transform .2s}
.footer-link:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{padding:20px 0;font-size:12.8px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#7e94a6}
.footer-bottom a{color:#9db2c4}
.footer-bottom a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero{padding:58px 0 70px}
  .coupon-band{margin-top:0;padding-top:0}
  .voucher-wall{grid-template-columns:1fr 1fr}
  .voucher-main{grid-column:1 / -1;order:-1}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .guard-grid{grid-template-columns:repeat(2,1fr)}
  .story{grid-template-columns:1fr;gap:32px}
  .news-grid{grid-template-columns:1fr}
  .section{padding:58px 0}
}
@media (max-width:820px){
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:absolute;top:64px;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 16px 30px rgba(15,27,45,.1);
    flex-direction:column;align-items:stretch;gap:4px;padding:12px;
    display:none;
  }
  .main-nav.open{display:flex}
  .nav-link{padding:12px 14px;font-size:15px}
  .header-actions .btn-sm{padding:9px 13px;font-size:13.5px}
}
@media (max-width:768px){
  .voucher-wall{grid-template-columns:1fr}
  .v-main-grid{grid-template-columns:1fr;gap:18px}
  .v-left{border-right:0;border-bottom:1px dashed rgba(255,255,255,.22);padding-right:0;padding-bottom:18px}
  .v-amount{font-size:48px}
  .grid-3,.grid-4,.grid-2,.guard-grid,.stat-row{grid-template-columns:1fr}
  .cta-band{padding:32px 24px;border-radius:16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .section{padding:52px 0}
  .hero-lead{font-size:14.8px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-text{font-size:16px}
  .hero{padding:44px 0 52px}
  .hero h1{font-size:25px}
  .hero-points{gap:16px;font-size:12.8px}
  .voucher-main{padding:22px 18px}
  .voucher-side{padding:18px}
  .section-title{font-size:21px}
  .news-item{padding:16px}
  .footer-bottom{flex-direction:column;gap:6px}
}

/* roulang page: article */
:root{
 --bg:#f5f7fb;
 --surface:#ffffff;
 --ink:#0e1a2b;
 --ink-soft:#5a6b82;
 --line:#e4e9f2;
 --brand:#0e7c74;
 --brand-deep:#0a5d57;
 --brand-soft:#e6f4f2;
 --gold:#c8912f;
 --radius:14px;
 --shadow-sm:0 2px 8px rgba(15,27,45,.06);
 --shadow-md:0 14px 34px rgba(15,27,45,.11);
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
 background:var(--bg);
 color:var(--ink);
 font-size:15px;
 line-height:1.78;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(15,27,45,.09)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
 width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
 background:linear-gradient(135deg,var(--brand),#12a89b);
 color:#fff;font-weight:800;font-size:17px;
 box-shadow:0 6px 14px rgba(14,124,116,.28);
}
.brand-text{font-size:18px;font-weight:800;letter-spacing:.6px;color:var(--ink)}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
 padding:8px 14px;border-radius:9px;font-size:14.5px;font-weight:500;
 color:var(--ink-soft);transition:color .2s,background .2s;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);background:var(--brand-soft);font-weight:700}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
 display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
 align-items:center;justify-content:center;background:#fff;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink);fill:none}
/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 border-radius:8px;font-weight:600;font-size:14.5px;padding:11px 20px;
 min-height:42px;border:1px solid transparent;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(14,124,116,.24)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 12px 24px rgba(14,124,116,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(14,124,116,.24)}
.btn-outline{border-color:var(--line);background:#fff;color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-ghost{border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px;min-height:38px}
/* ---------- article hero ---------- */
.article-hero{position:relative;overflow:hidden;background:#0b1c2b;color:#fff;padding:52px 0 58px}
.article-hero-bg{
 position:absolute;inset:0;background-size:cover;background-position:center;
 opacity:.26;transform:scale(1.05);
}
.article-hero::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(9,26,38,.9) 0%,rgba(9,26,38,.95) 60%,#0a1e2d 100%);
}
.article-hero-inner{position:relative;z-index:2;max-width:920px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#93aebf}
.breadcrumb a{color:#c9f2ec;transition:color .2s}
.breadcrumb a:hover{color:#fff}
.breadcrumb span.sep{color:#557187}
.article-title{
 font-size:clamp(24px,3.6vw,38px);line-height:1.4;font-weight:800;
 letter-spacing:-.4px;margin:18px 0 18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px}
.meta-pill{
 background:rgba(55,214,194,.14);border:1px solid rgba(55,214,194,.4);
 color:#9ff0e4;border-radius:999px;padding:5px 13px;font-weight:600;
}
.meta-item{
 background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
 color:#c6d6e3;border-radius:999px;padding:5px 13px;
}
/* ---------- sections ---------- */
.section{padding:64px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:34px}
.section-title{font-size:clamp(20px,2.6vw,28px);font-weight:800;letter-spacing:-.3px;margin:10px 0 12px;line-height:1.45}
.section-desc{color:var(--ink-soft);font-size:15px;line-height:1.85}
.v-badge{
 display:inline-block;font-size:12px;font-weight:700;letter-spacing:.6px;
 color:var(--brand);background:var(--brand-soft);padding:4px 11px;border-radius:999px;
}
/* ---------- article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start}
.article-panel{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:30px 32px;
}
.article-cover{margin:0 0 26px}
.article-cover img{width:100%;border-radius:12px;aspect-ratio:16/9;object-fit:cover;background:#eef2f6}
.article-cover figcaption{margin-top:10px;font-size:13px;color:var(--ink-soft);line-height:1.7}
.article-content{font-size:15.5px;line-height:1.9;color:#22303f;word-break:break-word}
.article-content h2{
 font-size:22px;margin:34px 0 14px;padding-left:12px;border-left:4px solid var(--brand);
 font-weight:800;line-height:1.5;
}
.article-content h3{font-size:18px;margin:26px 0 10px;font-weight:700;line-height:1.55}
.article-content h4{font-size:16px;margin:20px 0 8px;font-weight:700}
.article-content p{margin:0 0 16px}
.article-content ul,.article-content ol{margin:0 0 18px;padding-left:22px}
.article-content li{margin-bottom:8px}
.article-content a{color:var(--brand);border-bottom:1px dashed rgba(14,124,116,.45)}
.article-content a:hover{color:var(--brand-deep);border-bottom-style:solid}
.article-content img{border-radius:12px;margin:20px 0;width:100%;height:auto}
.article-content blockquote{
 margin:20px 0;padding:14px 18px;background:var(--brand-soft);
 border-left:4px solid var(--brand);border-radius:0 10px 10px 0;color:#0d4b47;
}
.article-content table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-content th{background:#f2f6fa;font-weight:700}
.article-content code{background:#f2f6fa;padding:2px 6px;border-radius:6px;font-size:13.5px}
.empty-state{
 text-align:center;padding:52px 20px;border:1px dashed var(--line);border-radius:12px;background:#fbfcfe;
}
.empty-state h2{font-size:20px;font-weight:800;margin-bottom:10px}
.empty-state p{color:var(--ink-soft);margin-bottom:20px}
/* ---------- sidebar ---------- */
.side-stack{display:flex;flex-direction:column;gap:18px;position:sticky;top:84px}
.side-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:20px 22px;
}
.side-title{font-size:15px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:4px;height:16px;border-radius:3px;background:var(--brand)}
.side-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.side-list a{
 display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink-soft);
 padding:8px 10px;border-radius:9px;transition:background .2s,color .2s;
}
.side-list a:hover{background:var(--brand-soft);color:var(--brand-deep)}
.side-list .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px;flex-shrink:0}
.info-row{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;padding:9px 0;border-bottom:1px dashed var(--line)}
.info-row:last-child{border-bottom:0}
.info-row span:first-child{color:var(--ink-soft)}
.info-row span:last-child{font-weight:600;color:var(--ink);text-align:right}
.side-cta{
 background:linear-gradient(140deg,#0e2b3c 0%,#134a52 58%,#0c3340 100%);
 color:#fff;border:1px solid rgba(214,164,74,.42);border-radius:var(--radius);
 padding:22px;box-shadow:0 18px 36px rgba(9,32,44,.24);
}
.side-cta h3{font-size:17px;font-weight:800;line-height:1.5;margin-bottom:8px}
.side-cta p{font-size:13.5px;color:#b9cdd9;line-height:1.75;margin-bottom:16px}
/* ---------- cards / grids ---------- */
.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:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.card-media{aspect-ratio:16/10;overflow:hidden;background:#eef2f6}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-media img{transform:scale(1.05)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:16.5px;font-weight:800;line-height:1.5}
.card-text{font-size:14px;color:var(--ink-soft);line-height:1.8}
.card-foot{margin-top:auto;display:flex;flex-wrap:wrap;gap:8px}
.chip{
 font-size:12px;padding:4px 10px;border-radius:999px;background:var(--brand-soft);
 color:var(--brand-deep);font-weight:600;
}
.chip-gold{background:rgba(200,145,47,.12);color:#8f6519}
/* ---------- table wrap ---------- */
.table-wrap{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);overflow-x:auto;
}
.spec-table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:560px}
.spec-table th,.spec-table td{padding:14px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.spec-table th{background:#f4f8fb;font-weight:700;color:#1b2a3a;white-space:nowrap}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr:hover{background:#fafcfe}
.spec-table td strong{color:var(--brand-deep)}
/* ---------- checklist ---------- */
.check-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.check-list li{
 background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;
 box-shadow:var(--shadow-sm);display:flex;gap:12px;align-items:flex-start;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.check-list li:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.check-index{
 width:26px;height:26px;border-radius:8px;background:var(--brand-soft);color:var(--brand-deep);
 display:grid;place-items:center;font-weight:800;font-size:13px;flex-shrink:0;
}
.check-list strong{display:block;font-size:14.5px;margin-bottom:4px}
.check-list span.txt{font-size:13.5px;color:var(--ink-soft);line-height:1.75}
/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:12px;
 box-shadow:var(--shadow-sm);padding:0 22px;transition:border-color .2s,box-shadow .2s;
}
.faq-item[open]{border-color:#cfe3e0;box-shadow:var(--shadow-md)}
.faq-item summary{
 list-style:none;cursor:pointer;padding:17px 0;font-size:15.5px;font-weight:700;
 display:flex;justify-content:space-between;gap:16px;align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"";width:9px;height:9px;border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
 transform:rotate(45deg);transition:transform .2s;flex-shrink:0;margin-right:4px;
}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-answer{padding:0 0 18px;color:var(--ink-soft);font-size:14.5px;line-height:1.85}
/* ---------- cta ---------- */
.cta-section{padding:64px 0 78px}
.cta-band{
 background:linear-gradient(140deg,#0e2b3c 0%,#134a52 58%,#0c3340 100%);
 border:1px solid rgba(214,164,74,.38);
 border-radius:18px;padding:38px 40px;color:#fff;
 display:flex;align-items:center;justify-content:space-between;gap:32px;
 box-shadow:0 26px 50px rgba(9,32,44,.26);
}
.cta-eyebrow{
 display:inline-block;font-size:12px;font-weight:700;letter-spacing:1px;
 color:#9ff0e4;background:rgba(55,214,194,.14);border:1px solid rgba(55,214,194,.4);
 border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.cta-title{font-size:clamp(20px,2.6vw,27px);font-weight:800;line-height:1.45;margin-bottom:10px}
.cta-desc{font-size:14.5px;color:#b9cdd9;line-height:1.85;max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0}
/* ---------- footer ---------- */
.site-footer{background:#0b1c2b;color:#c0d0dd;padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-about{font-size:13.5px;line-height:1.9;color:#93aebf;max-width:430px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.4px}
.footer-link{
 display:block;font-size:13.5px;color:#93aebf;padding:5px 0;
 transition:color .2s,transform .2s;
}
.footer-link:hover{color:#37d6c2;transform:translateX(3px)}
.footer-bottom{
 display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
 padding-top:20px;font-size:12.5px;color:#7d97a9;
}
/* ---------- responsive ---------- */
@media (max-width:1024px){
 .article-layout{grid-template-columns:1fr;gap:24px}
 .side-stack{position:static;top:auto;flex-direction:row;flex-wrap:wrap}
 .side-stack > *{flex:1 1 300px}
 .grid-3{grid-template-columns:repeat(2,1fr)}
 .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
}
@media (max-width:860px){
 .nav-toggle{display:inline-flex}
 .main-nav{
  display:none;position:absolute;top:64px;left:0;right:0;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 14px 30px rgba(15,27,45,.12);
  flex-direction:column;align-items:stretch;gap:2px;padding:12px 16px 16px;
 }
 .main-nav.open{display:flex}
 .nav-link{padding:11px 14px;font-size:15px;border-radius:10px}
 .header-actions .btn-sm{padding:8px 13px;font-size:13px;min-height:36px}
 .article-panel{padding:22px 20px}
 .article-content h2{font-size:20px}
 .check-list{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
 .footer-about{grid-column:1 / -1}
}
@media (max-width:520px){
 .header-inner{height:60px;gap:10px}
 .brand-text{font-size:16px}
 .main-nav{top:60px}
 .article-hero{padding:38px 0 42px}
 .section{padding:46px 0}
 .grid-3,.grid-2{grid-template-columns:1fr}
 .side-stack{flex-direction:column}
 .cta-band{padding:26px 22px}
 .cta-actions{width:100%}
 .cta-actions .btn{width:100%}
 .footer-grid{grid-template-columns:1fr}
 .footer-bottom{flex-direction:column;gap:6px}
 .article-panel{padding:18px 16px}
}

/* roulang page: category1 */
:root{
  --bg:#f5f7fb;
  --surface:#ffffff;
  --ink:#0e1a2b;
  --ink-soft:#5a6b82;
  --line:#e4e9f2;
  --brand:#0e7c74;
  --brand-deep:#0a5d57;
  --brand-soft:#e6f4f2;
  --gold:#c8912f;
  --radius:14px;
  --shadow-sm:0 2px 8px rgba(15,27,45,.06);
  --shadow-md:0 14px 34px rgba(15,27,45,.11);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:15px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(15,27,45,.09)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),#12a89b);
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 6px 14px rgba(14,124,116,.28);
}
.brand-text{font-size:18px;font-weight:800;letter-spacing:.6px;color:var(--ink)}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
  padding:8px 14px;border-radius:9px;font-size:14.5px;font-weight:500;
  color:var(--ink-soft);transition:color .2s,background .2s;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);background:var(--brand-soft);font-weight:700}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:#fff;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink);fill:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:8px;font-weight:600;font-size:14.5px;padding:11px 20px;
  min-height:42px;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(14,124,116,.24)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 12px 24px rgba(14,124,116,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(14,124,116,.24)}
.btn-primary.is-done{background:#1e9c70;box-shadow:none;cursor:default}
.btn-outline{border-color:var(--line);background:#fff;color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-ghost{border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px;min-height:38px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:#0b1c2b;color:#fff;padding:56px 0 62px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.3;transform:scale(1.04)}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(9,26,38,.88) 0%,rgba(9,26,38,.94) 60%,#0a1e2d 100%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:44px;align-items:start}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  color:#c9f2ec;padding:6px 14px;border-radius:999px;font-size:13px;letter-spacing:.4px;
}
.hero-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:#37d6c2;box-shadow:0 0 0 4px rgba(55,214,194,.18)}
.hero h1{
  font-size:clamp(26px,3.7vw,40px);line-height:1.34;font-weight:800;
  letter-spacing:-.5px;margin:20px 0 16px;
}
.hero-lead{font-size:15.5px;line-height:1.9;color:#c6d6e3;max-width:660px;margin:0}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#dbe9f2;
}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:24px;font-size:13.5px;color:#9fb7c8}
.hero-points span{display:inline-flex;align-items:center;gap:7px}
.hero-points svg{width:16px;height:16px;stroke:#37d6c2;fill:none;stroke-width:1.8}

/* roadmap panel */
.roadmap-panel{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  border-radius:16px;padding:22px 22px 20px;
  backdrop-filter:blur(8px);
  box-shadow:0 24px 46px rgba(4,18,28,.34);
}
.roadmap-title{font-size:13px;letter-spacing:1.2px;color:#8fe3d6;font-weight:700;margin:0 0 6px}
.roadmap-sub{font-size:12.5px;color:#9fb7c8;margin:0 0 14px}
.roadmap-list{list-style:none;margin:0;padding:0}
.roadmap-item{display:flex;gap:12px;padding:9px 0 9px 0;position:relative}
.roadmap-item + .roadmap-item{border-top:1px dashed rgba(255,255,255,.12)}
.roadmap-dot{
  width:10px;height:10px;border-radius:50%;background:#37d6c2;margin-top:8px;flex-shrink:0;
  box-shadow:0 0 0 4px rgba(55,214,194,.16);
}
.roadmap-item.is-pending .roadmap-dot{background:var(--gold);box-shadow:0 0 0 4px rgba(200,145,47,.18)}
.roadmap-name{font-size:14px;font-weight:700;color:#fff;margin:0;line-height:1.5}
.roadmap-meta{font-size:12.5px;color:#8aa2b4;margin:2px 0 0}
.sub-form{margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.14)}
.sub-label{display:block;font-size:13px;font-weight:700;color:#dbe9f2;margin-bottom:8px}
.sub-row{display:flex;gap:8px}
.sub-input{
  flex:1;min-width:0;height:40px;border-radius:8px;padding:0 12px;font-size:13.5px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);color:#fff;
}
.sub-input::placeholder{color:#8aa2b4}
.sub-input:focus{outline:none;border-color:#37d6c2;background:rgba(255,255,255,.16)}
.sub-tip{font-size:12px;color:#8aa2b4;margin:9px 0 0;line-height:1.6}

/* ---------- sections ---------- */
.section{padding:68px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:740px;margin-bottom:34px}
.section-title{font-size:clamp(21px,2.6vw,29px);font-weight:800;letter-spacing:-.3px;margin:12px 0 12px;line-height:1.4}
.section-desc{color:var(--ink-soft);font-size:15px;line-height:1.85;margin:0}
.v-badge{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.6px;
  color:var(--brand);background:var(--brand-soft);padding:4px 11px;border-radius:999px;
}

/* ---------- grids ---------- */
.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:20px}

/* ---------- cards ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.card-media{aspect-ratio:16/10;overflow:hidden;background:#eef2f6}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-media img{transform:scale(1.05)}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.card-title{font-size:16.5px;font-weight:700;line-height:1.5;margin:10px 0 8px}
.card-text{font-size:14px;color:var(--ink-soft);line-height:1.8;margin:0}
.card-tag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:3px 10px;margin-top:14px;align-self:flex-start;
}
.icon-box{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);
}
.icon-box svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* stats */
.stats-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:32px}
.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px;box-shadow:var(--shadow-sm)}
.stat-num{font-size:26px;font-weight:800;color:var(--brand);line-height:1.2;letter-spacing:-.5px}
.stat-label{font-size:13.5px;color:var(--ink-soft);margin:4px 0 0}

/* steps */
.step-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.step{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 16px;
  box-shadow:var(--shadow-sm);position:relative;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.step-num{
  display:inline-block;font-size:12px;font-weight:800;letter-spacing:.8px;color:var(--brand);
  background:var(--brand-soft);border-radius:8px;padding:2px 9px;margin-bottom:10px;
}
.step-title{font-size:14.5px;font-weight:700;margin:0 0 6px;line-height:1.5}
.step-text{font-size:13px;color:var(--ink-soft);margin:0;line-height:1.75}

/* myths */
.myth-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.myth-item{
  background:#fff;border:1px solid var(--line);border-left:3px solid var(--gold);
  border-radius:12px;padding:18px 20px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease;
}
.myth-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.myth-wrong{font-size:14.5px;font-weight:700;margin:0 0 6px;color:#8a5a12}
.myth-right{font-size:14px;color:var(--ink-soft);margin:0;line-height:1.8}

/* channel */
.channel-card{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.channel-card h3{font-size:17px;font-weight:700;margin:0 0 6px}
.channel-card p{font-size:14px;color:var(--ink-soft);margin:0 0 10px;line-height:1.8}
.channel-more{font-size:13.5px;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.channel-more svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* post list */
.post-card .card-title a{transition:color .2s}
.post-card .card-title a:hover{color:var(--brand)}
.post-date{font-size:12.5px;color:#8aa2b4}
.card-foot{margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
.empty-note{font-size:14px;color:var(--ink-soft);margin:0}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:880px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow-sm);padding:0 20px;
  transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:#cfe3e0;box-shadow:var(--shadow-md)}
.faq-item summary{
  list-style:none;cursor:pointer;font-size:15.5px;font-weight:700;padding:16px 28px 16px 0;
  position:relative;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:700;color:var(--brand);transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−"}
.faq-item p{margin:0 0 18px;font-size:14.5px;color:var(--ink-soft);line-height:1.85}

/* cta */
.cta-band{
  background:linear-gradient(140deg,#0e2b3c 0%,#114a52 58%,#0c3340 100%);
  border:1px solid rgba(214,164,74,.36);border-radius:18px;
  padding:36px 34px;color:#fff;
  display:grid;grid-template-columns:1.3fr .7fr;gap:30px;align-items:center;
  box-shadow:0 26px 50px rgba(9,32,44,.24);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:800;margin:12px 0 10px;line-height:1.45}
.cta-band p{font-size:14.5px;color:#c6d6e3;margin:0;line-height:1.85}
.cta-list{list-style:none;margin:16px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.cta-list li{font-size:13.5px;color:#dbe9f2;display:flex;align-items:flex-start;gap:8px}
.cta-list svg{width:16px;height:16px;stroke:#37d6c2;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;margin-top:4px;flex-shrink:0}
.cta-side{display:flex;flex-direction:column;gap:12px;align-items:stretch;text-align:center}
.cta-note{font-size:12.5px;color:#8aa2b4;margin:0}

/* ---------- footer ---------- */
.site-footer{background:#0b1c2b;color:#c6d6e3;padding:52px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#fff;font-size:17px;margin-bottom:14px}
.footer-about{font-size:13.5px;line-height:1.85;color:#9fb7c8;max-width:430px;margin:0}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin:0 0 12px}
.footer-link{display:block;font-size:13.5px;color:#9fb7c8;padding:5px 0;transition:color .2s}
.footer-link:hover{color:#37d6c2}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:20px;
  font-size:13px;color:#8aa2b4;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .step-list{grid-template-columns:repeat(3,1fr)}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;gap:24px;text-align:left}
  .cta-side{text-align:left;align-items:flex-start}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:absolute;top:64px;left:0;right:0;display:none;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;padding:12px 20px 18px;
    border-bottom:1px solid var(--line);
    box-shadow:0 18px 34px rgba(15,27,45,.13);
  }
  .main-nav.open{display:flex}
  .nav-link{padding:12px 14px;border-radius:8px;font-size:15px}
}
@media (max-width:768px){
  .section{padding:52px 0}
  .grid-3,.grid-4,.grid-2,.myth-grid,.stats-strip{grid-template-columns:1fr}
  .step-list{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .hero{padding:44px 0 50px}
  .hero h1{font-size:26px}
  .hero-lead{font-size:15px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .step-list{grid-template-columns:1fr}
  .cta-band{padding:26px 20px}
  .sub-row{flex-direction:column}
  .sub-row .btn{width:100%}
  .header-actions .btn-sm{display:none}
  .hero-points{gap:14px;font-size:13px}
}

/* roulang page: category2 */
:root{
 --bg:#f5f7fb;
 --surface:#ffffff;
 --ink:#0e1a2b;
 --ink-soft:#5a6b82;
 --line:#e4e9f2;
 --brand:#0e7c74;
 --brand-deep:#0a5d57;
 --brand-soft:#e6f4f2;
 --gold:#c8912f;
 --radius:14px;
 --shadow-sm:0 2px 8px rgba(15,27,45,.06);
 --shadow-md:0 14px 34px rgba(15,27,45,.11);
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
 background:var(--bg);
 color:var(--ink);
 font-size:15px;
 line-height:1.78;
 -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(15,27,45,.09)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
 width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
 background:linear-gradient(135deg,var(--brand),#12a89b);
 color:#fff;font-weight:800;font-size:17px;
 box-shadow:0 6px 14px rgba(14,124,116,.28);
}
.brand-text{font-size:18px;font-weight:800;letter-spacing:.6px;color:var(--ink)}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
 padding:8px 14px;border-radius:9px;font-size:14.5px;font-weight:500;
 color:var(--ink-soft);transition:color .2s,background .2s;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);background:var(--brand-soft);font-weight:700}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
 display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
 align-items:center;justify-content:center;background:#fff;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink);fill:none}

/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 border-radius:8px;font-weight:600;font-size:14.5px;padding:11px 20px;
 min-height:42px;border:1px solid transparent;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(14,124,116,.24)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 12px 24px rgba(14,124,116,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(14,124,116,.24)}
.btn-outline{border-color:var(--line);background:#fff;color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-ghost{border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px;min-height:38px}

/* ---------- category hero ---------- */
.hero-cat{
 position:relative;overflow:hidden;
 background:linear-gradient(160deg,#eef4f7 0%,#f5f7fb 58%,#eaf1f4 100%);
 border-bottom:1px solid var(--line);
 padding:58px 0 62px;
}
.hero-cat::before{
 content:"";position:absolute;top:-90px;right:-90px;width:420px;height:420px;border-radius:50%;
 background:radial-gradient(circle at 50% 50%,rgba(14,124,116,.16),rgba(14,124,116,0) 68%);
}
.hero-cat-bg{
 position:absolute;inset:0;background-size:cover;background-position:center;
 opacity:.07;filter:saturate(.6);
}
.hero-cat-grid{
 position:relative;z-index:2;
 display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:start;
}
.hero-cat h1{
 font-size:clamp(27px,3.5vw,41px);line-height:1.34;font-weight:800;letter-spacing:-.6px;
 margin:16px 0 18px;
}
.hero-lead-cat{font-size:16px;line-height:1.92;color:var(--ink-soft);max-width:620px}
.tag-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.tag-pill{
 padding:6px 14px;border-radius:999px;font-size:13px;font-weight:500;
 background:#fff;border:1px solid var(--line);color:var(--ink-soft);
 transition:border-color .2s,color .2s,transform .2s;
}
.tag-pill:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:24px;font-size:13.5px;color:var(--ink-soft)}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta svg{width:15px;height:15px;stroke:var(--brand);fill:none;stroke-width:1.8}

/* doc card */
.doc-card{
 background:#fff;border:1px solid var(--line);border-radius:16px;
 box-shadow:var(--shadow-md);padding:24px 24px 22px;position:relative;overflow:hidden;
}
.doc-card::before{
 content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
 background:linear-gradient(180deg,var(--brand),#12a89b);
}
.doc-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.doc-title{font-size:16px;font-weight:800;letter-spacing:.3px}
.doc-sub{font-size:12.5px;color:var(--ink-soft)}
.doc-list{display:flex;flex-direction:column;gap:2px}
.doc-item{
 display:flex;align-items:flex-start;gap:12px;
 padding:10px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--ink);
 transition:color .2s;
}
.doc-item:last-child{border-bottom:0}
.doc-item:hover{color:var(--brand)}
.doc-num{
 flex-shrink:0;width:24px;height:24px;border-radius:7px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:800;margin-top:2px;
}
.doc-foot{margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}
.doc-foot p{font-size:12.5px;color:var(--ink-soft);margin-bottom:12px;line-height:1.7}
.doc-foot .btn{width:100%}

/* ---------- stat band ---------- */
.stat-band{background:#0b1c2b;color:#fff;padding:34px 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-item{text-align:left;padding-left:16px;border-left:2px solid rgba(55,214,194,.42)}
.stat-num{font-size:26px;font-weight:800;letter-spacing:-.4px;color:#fff;line-height:1.3}
.stat-num em{font-style:normal;font-size:14px;font-weight:600;color:#37d6c2;margin-left:4px}
.stat-label{font-size:13px;color:#93a8ba;margin-top:4px}

/* ---------- sections ---------- */
.section{padding:72px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:36px}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
 letter-spacing:.6px;color:var(--brand);text-transform:none;
 padding:4px 12px;border-radius:999px;background:var(--brand-soft);
}
.section-title{font-size:clamp(21px,2.7vw,29px);font-weight:800;letter-spacing:-.3px;margin:12px 0 12px;line-height:1.42}
.section-desc{color:var(--ink-soft);font-size:15px;line-height:1.88}
.v-badge{
 display:inline-block;font-size:12px;font-weight:700;letter-spacing:.4px;
 color:var(--brand);background:var(--brand-soft);padding:4px 11px;border-radius:999px;
}

/* ---------- grids ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}

/* ---------- cards ---------- */
.card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.card-media{aspect-ratio:16/10;overflow:hidden;background:#eef2f6}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-media img{transform:scale(1.05)}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:16.5px;font-weight:800;line-height:1.5;letter-spacing:-.1px}
.card-text{font-size:14px;line-height:1.85;color:var(--ink-soft);flex:1}
.card-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:2px}
.card-tags span{
 font-size:12px;padding:3px 10px;border-radius:999px;
 background:#f2f5f9;color:var(--ink-soft);border:1px solid var(--line);
}

/* method card */
.method-card{padding:24px 22px 22px;gap:12px}
.method-icon{
 width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand);
}
.method-icon svg{width:21px;height:21px;stroke:var(--brand);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.method-card .card-title{font-size:16.5px}

/* ---------- flow ---------- */
.flow{position:relative;display:flex;flex-direction:column;gap:0;margin-top:6px}
.flow-item{
 position:relative;display:grid;grid-template-columns:56px 1fr;gap:20px;
 padding:0 0 26px;
}
.flow-item:last-child{padding-bottom:0}
.flow-item::before{
 content:"";position:absolute;left:27px;top:48px;bottom:0;width:2px;
 background:linear-gradient(180deg,#d5e6e4,var(--line));
}
.flow-item:last-child::before{display:none}
.flow-num{
 width:56px;height:56px;border-radius:16px;display:grid;place-items:center;
 background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);
 font-size:17px;font-weight:800;color:var(--brand);flex-shrink:0;
}
.flow-body{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:18px 22px;box-shadow:var(--shadow-sm);
 transition:border-color .2s,box-shadow .2s,transform .2s;
}
.flow-body:hover{border-color:#cfe3e0;box-shadow:var(--shadow-md);transform:translateY(-2px)}
.flow-body h3{font-size:16px;font-weight:800;margin-bottom:6px}
.flow-body p{font-size:14px;line-height:1.86;color:var(--ink-soft)}

/* ---------- contrast ---------- */
.contrast{display:flex;flex-direction:column;gap:12px;margin-top:4px}
.contrast-row{
 display:grid;grid-template-columns:1fr 1fr;gap:0;
 background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;
 box-shadow:var(--shadow-sm);transition:box-shadow .2s,border-color .2s;
}
.contrast-row:hover{box-shadow:var(--shadow-md);border-color:#cfe3e0}
.contrast-cell{padding:16px 20px;display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:1.8}
.contrast-cell.bad{background:#fdf6f6;color:#8a4a4a}
.contrast-cell.good{background:#f4fbf9;color:#155e57;font-weight:600}
.contrast-cell svg{width:16px;height:16px;flex-shrink:0;margin-top:5px;stroke-width:2.2;fill:none}
.contrast-cell.bad svg{stroke:#c1694f}
.contrast-cell.good svg{stroke:var(--brand)}

/* ---------- news list ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:22px 22px 20px;display:flex;flex-direction:column;gap:10px;
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.news-title{font-size:16px;font-weight:800;line-height:1.55}
.news-desc{font-size:13.8px;line-height:1.82;color:var(--ink-soft);flex:1}
.news-date{font-size:12.5px;color:#93a3b6;padding-top:8px;border-top:1px dashed var(--line)}
.news-empty{
 background:#fff;border:1px dashed var(--line);border-radius:var(--radius);
 padding:36px 24px;text-align:center;color:var(--ink-soft);font-size:14.5px;
}

/* ---------- faq ---------- */
.faq-list{max-width:880px}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:12px;
 padding:0 22px;box-shadow:var(--shadow-sm);
 transition:border-color .2s,box-shadow .2s;
}
.faq-item + .faq-item{margin-top:12px}
.faq-item[open]{border-color:#cfe3e0;box-shadow:var(--shadow-md)}
.faq-item summary{
 list-style:none;cursor:pointer;padding:18px 0;font-weight:700;font-size:15.5px;
 display:flex;justify-content:space-between;align-items:center;gap:14px;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:21px;color:var(--brand);font-weight:400;line-height:1;flex-shrink:0}
.faq-item[open] summary::after{content:"−"}
.faq-a{
 padding:15px 0 20px;border-top:1px dashed var(--line);
 color:var(--ink-soft);font-size:14.5px;line-height:1.9;
}

/* ---------- cta ---------- */
.cta-band{
 position:relative;overflow:hidden;background:linear-gradient(140deg,#0e2b3c 0%,#134a52 58%,#0c3340 100%);
 color:#fff;padding:58px 0;
}
.cta-band::before{
 content:"";position:absolute;right:-80px;top:-80px;width:340px;height:340px;border-radius:50%;
 background:radial-gradient(circle,rgba(55,214,194,.22),rgba(55,214,194,0) 70%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:38px;align-items:center}
.cta-inner h2{font-size:clamp(21px,2.7vw,30px);font-weight:800;line-height:1.42;letter-spacing:-.3px;margin-bottom:12px}
.cta-inner p{font-size:14.8px;line-height:1.9;color:#c6d6e3;max-width:560px}
.cta-form{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.cta-input{
 flex:1;min-width:200px;min-height:44px;padding:10px 16px;border-radius:8px;
 border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.09);color:#fff;
 font-size:14.5px;transition:border-color .2s,background .2s;
}
.cta-input::placeholder{color:#9fb7c8}
.cta-input:focus{outline:none;border-color:#37d6c2;background:rgba(255,255,255,.14)}
.form-note{font-size:12.5px;color:#9fb7c8;margin-top:12px}
.form-note.is-ok{color:#5fe3d0}

/* ---------- footer ---------- */
.site-footer{background:#0b1c2b;color:#c6d6e3;padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:38px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-about{color:#93a6b8;font-size:14px;line-height:1.85;max-width:420px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:12px;letter-spacing:.5px}
.footer-link{display:block;color:#93a6b8;font-size:14px;padding:5px 0;transition:color .2s}
.footer-link:hover{color:#37d6c2}
.footer-bottom{
 border-top:1px solid rgba(255,255,255,.1);margin-top:34px;padding-top:20px;
 display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#7d93a6;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
 .hero-cat-grid{grid-template-columns:1fr;gap:32px}
 .hero-lead-cat{max-width:none}
 .grid-3{grid-template-columns:repeat(2,1fr)}
 .news-grid{grid-template-columns:repeat(2,1fr)}
 .stat-grid{grid-template-columns:repeat(2,1fr);gap:22px}
 .cta-inner{grid-template-columns:1fr;gap:26px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:960px){
 .main-nav{
  position:absolute;top:64px;left:0;right:0;
  flex-direction:column;align-items:stretch;gap:4px;
  background:#fff;border-bottom:1px solid var(--line);
  padding:12px 20px 18px;box-shadow:0 18px 32px rgba(15,27,45,.12);
  display:none;
 }
 .main-nav.is-open{display:flex}
 .nav-link{padding:12px 14px;font-size:15px}
 .nav-toggle{display:inline-flex}
 .header-actions .btn-sm{display:none}
}
@media (max-width:768px){
 .section{padding:52px 0}
 .hero-cat{padding:42px 0 46px}
 .grid-3,.grid-2,.news-grid{grid-template-columns:1fr}
 .contrast-row{grid-template-columns:1fr}
 .contrast-cell.good{border-top:1px solid var(--line)}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .flow-item{grid-template-columns:44px 1fr;gap:14px}
 .flow-num{width:44px;height:44px;border-radius:13px;font-size:15px}
 .flow-item::before{left:21px;top:40px}
 .doc-card{padding:20px}
}
@media (max-width:520px){
 body{font-size:14.5px}
 .header-inner{height:60px}
 .brand-text{font-size:16px}
 .hero-cat h1{font-size:25px}
 .stat-grid{grid-template-columns:1fr}
 .stat-item{padding-left:12px}
 .btn{width:100%}
 .hero-cta .btn,.cta-form .btn{width:100%}
 .cta-form{flex-direction:column}
 .cta-input{width:100%}
 .footer-bottom{flex-direction:column;gap:6px}
}

/* roulang page: category3 */
:root{
  --bg:#f5f7fb;
  --surface:#ffffff;
  --ink:#0e1a2b;
  --ink-soft:#5a6b82;
  --line:#e4e9f2;
  --brand:#0e7c74;
  --brand-deep:#0a5d57;
  --brand-soft:#e6f4f2;
  --gold:#c8912f;
  --radius:14px;
  --shadow-sm:0 2px 8px rgba(15,27,45,.06);
  --shadow-md:0 14px 34px rgba(15,27,45,.11);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:15px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(14,124,116,.35);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(15,27,45,.09)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),#12a89b);
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 6px 14px rgba(14,124,116,.28);
}
.brand-text{font-size:18px;font-weight:800;letter-spacing:.6px;color:var(--ink)}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
  padding:8px 14px;border-radius:9px;font-size:14.5px;font-weight:500;
  color:var(--ink-soft);transition:color .2s,background .2s;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);background:var(--brand-soft);font-weight:700}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:#fff;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink);fill:none}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:8px;font-weight:600;font-size:14.5px;padding:11px 20px;
  min-height:42px;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(14,124,116,.24)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 12px 24px rgba(14,124,116,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border-color:var(--line);background:#fff;color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px;min-height:38px}
/* ---------- hero ---------- */
.hero-cat{position:relative;overflow:hidden;background:#0b1c2b;color:#fff;padding:64px 0 76px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.30;transform:scale(1.05)}
.hero-cat::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(9,26,38,.88) 0%,rgba(9,26,38,.94) 60%,#0a1e2d 100%);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  color:#c9f2ec;padding:6px 14px;border-radius:999px;font-size:13px;letter-spacing:.4px;
}
.hero-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:#37d6c2;box-shadow:0 0 0 4px rgba(55,214,194,.18)}
.hero-cat h1{
  font-size:clamp(26px,3.6vw,40px);line-height:1.34;font-weight:800;
  letter-spacing:-.5px;margin:20px 0 16px;
}
.hero-lead{font-size:15.5px;line-height:1.9;color:#c6d6e3;max-width:680px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#dbe9f2;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.panel-glass{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.18);
  border-radius:16px;padding:22px 22px 18px;
  backdrop-filter:blur(6px);
  box-shadow:0 24px 48px rgba(4,18,28,.35);
}
.panel-head{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;letter-spacing:.5px;color:#a9c3d4;padding-bottom:14px;
  border-bottom:1px dashed rgba(255,255,255,.16);margin-bottom:6px;
}
.panel-head strong{color:#fff;font-size:14px;letter-spacing:0}
.panel-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 0;border-bottom:1px solid rgba(255,255,255,.08)}
.panel-row:last-child{border-bottom:0;padding-bottom:4px}
.panel-row .pl{font-size:14px;font-weight:600;color:#eaf4fa}
.panel-row .pr{font-size:12.5px;color:#8fb0c4;text-align:right}
.panel-row .badge-pill{
  display:inline-block;font-size:11.5px;padding:2px 9px;border-radius:999px;
  background:rgba(55,214,194,.16);color:#7ff0e0;border:1px solid rgba(55,214,194,.28);
}
/* ---------- sections ---------- */
.section{padding:70px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:36px}
.section-title{font-size:clamp(21px,2.6vw,29px);font-weight:800;letter-spacing:-.3px;margin:12px 0 12px;line-height:1.4}
.section-desc{color:var(--ink-soft);font-size:15px;line-height:1.85}
.v-badge{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.6px;
  color:var(--brand);background:var(--brand-soft);padding:4px 11px;border-radius:999px;
}
/* ---------- grids ---------- */
.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:20px}
/* ---------- cards ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.card-media{aspect-ratio:16/10;overflow:hidden;background:#eef2f6}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-media img{transform:scale(1.05)}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:9px;flex:1}
.card-title{font-size:16.5px;font-weight:700;line-height:1.5}
.card-text{font-size:14px;color:var(--ink-soft);line-height:1.8}
.card-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:10px}
.mini-tag{
  font-size:12px;padding:3px 10px;border-radius:999px;
  background:#f1f5f9;color:#5a6b82;border:1px solid var(--line);
}
/* icon card */
.icon-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.icon-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.icon-box{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-soft);margin-bottom:16px;
}
.icon-box svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.icon-card h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.icon-card p{font-size:14px;color:var(--ink-soft);line-height:1.8}
/* ---------- stats ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease;
}
.stat:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.stat-num{font-size:32px;font-weight:800;color:var(--brand);line-height:1.2;letter-spacing:-.5px}
.stat-num small{font-size:14px;font-weight:700;color:var(--ink-soft);margin-left:4px}
.stat-label{font-size:14px;font-weight:600;margin-top:6px}
.stat-note{font-size:13px;color:var(--ink-soft);margin-top:4px;line-height:1.7}
/* ---------- steps ---------- */
.step-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.step{
  display:flex;gap:16px;padding:20px 22px;background:#fff;
  border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.step-no{
  flex:0 0 34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);font-weight:800;font-size:14px;
}
.step h3{font-size:15.5px;font-weight:700;margin-bottom:5px}
.step p{font-size:13.8px;color:var(--ink-soft);line-height:1.78}
/* ---------- faq ---------- */
.faq-wrap{max-width:880px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow-sm);margin-bottom:12px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#cfe3e0;box-shadow:var(--shadow-md)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 52px 18px 22px;
  font-size:15.5px;font-weight:700;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:24px;width:10px;height:10px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(45deg);transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-item p{padding:0 22px 20px;font-size:14px;color:var(--ink-soft);line-height:1.85}
/* ---------- news list ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.news-card{
  display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 22px 20px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3e0}
.news-card h3{font-size:16px;font-weight:700;line-height:1.55}
.news-card p{font-size:13.8px;color:var(--ink-soft);line-height:1.78}
.news-meta{display:flex;gap:12px;flex-wrap:wrap;font-size:12.5px;color:#8797a9;margin-top:auto;padding-top:8px;border-top:1px dashed var(--line)}
.empty-note{
  grid-column:1/-1;text-align:center;color:var(--ink-soft);font-size:14.5px;
  padding:34px 20px;background:#fff;border:1px dashed var(--line);border-radius:var(--radius);
}
/* ---------- cta ---------- */
.cta-band{
  background:linear-gradient(140deg,#0e2b3c 0%,#134a52 58%,#0c3340 100%);
  border:1px solid rgba(214,164,74,.36);
  border-radius:18px;padding:38px 40px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:0 26px 50px rgba(9,32,44,.28);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:800;line-height:1.45;letter-spacing:-.3px}
.cta-band p{font-size:14.5px;color:#bcd3e0;margin-top:8px;line-height:1.8;max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-on-dark{border-color:rgba(255,255,255,.45);color:#fff;background:transparent}
.btn-on-dark:hover{background:rgba(255,255,255,.14);transform:translateY(-1px)}
/* ---------- footer ---------- */
.site-footer{background:#0b1c2b;color:#b7c8d6;padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:14px}
.footer-about{font-size:13.8px;line-height:1.85;color:#93a9bb;max-width:420px}
.footer-title{color:#fff;font-size:14.5px;font-weight:700;margin-bottom:14px;letter-spacing:.4px}
.footer-link{display:block;font-size:14px;color:#93a9bb;padding:5px 0;transition:color .2s ease,transform .2s ease}
.footer-link:hover{color:#7ff0e0;transform:translateX(3px)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:#7e93a6;
}
/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-lead{max-width:none}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:28px}
}
@media (max-width:860px){
  .main-nav{
    position:absolute;top:64px;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;padding:10px 16px 16px;
    display:none;box-shadow:0 18px 30px rgba(15,27,45,.12);
  }
  .main-nav.open{display:flex}
  .nav-link{padding:12px 14px;font-size:15px}
  .nav-toggle{display:flex}
  .header-actions .btn-sm{display:none}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .step-list{grid-template-columns:1fr}
}
@media (max-width:768px){
  .section{padding:50px 0}
  .hero-cat{padding:48px 0 56px}
  .grid-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .cta-band{padding:28px 24px}
}
@media (max-width:520px){
  .grid-3,.grid-4,.stat-strip,.news-grid{grid-template-columns:1fr}
  .hero-cat h1{font-size:25px}
  .section-title{font-size:21px}
  .panel-glass{padding:18px 16px 14px}
  .container{padding:0 16px}
  .btn{width:100%}
  .header-actions .btn{width:auto}
  .faq-item summary{padding:16px 46px 16px 18px;font-size:14.8px}
}