/* roulang page: index */
:root{
  --ink:#1C1735;
  --night:#120F24;
  --gold:#E0B15C;
  --gold-hi:#EDC178;
  --aurora:#77D9C4;
  --paper:#F7F5F0;
  --card:#FFFFFF;
  --line:#E6E1D6;
  --line-soft:#DCD6C8;
  --text:#171528;
  --muted:#5E5A72;
  --muted-dark:rgba(255,255,255,.68);
  --line-dark:rgba(255,255,255,.14);
  --r-card:14px;
  --r-btn:8px;
  --shadow-hover:0 18px 40px -24px rgba(23,18,53,.35);
  --shadow-modal:0 40px 80px -30px rgba(12,11,30,.45);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea{font-family:inherit;font-size:15px;color:var(--text);}
:focus-visible{outline:2px solid var(--aurora);outline-offset:2px;border-radius:4px;}
.container{max-width:1180px;margin:0 auto;padding:0 40px;}
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.eyebrow{font-size:13px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;}
.h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.01em;color:var(--ink);}
.h3{font-size:22px;line-height:1.4;font-weight:600;color:var(--ink);letter-spacing:-.01em;}
.lead{font-size:17px;line-height:1.9;color:var(--muted);max-width:640px;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.97);
  border-bottom:1px solid var(--line);
}
.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:8px;font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.02em;}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--gold);flex:none;}
.nav-links{display:flex;align-items:center;gap:36px;}
.nav-link{position:relative;font-size:15px;color:#3A3651;padding:6px 0;transition:color .2s ease;}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--gold);transform:scaleX(0);transform-origin:center;transition:transform .2s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--ink);font-weight:600;}
.nav-link.active::after{left:20%;right:20%;height:2px;transform:scaleX(1);}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border:1px solid #C9C2B1;border-radius:var(--r-btn);
  font-size:14px;color:var(--ink);background:transparent;transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.nav-cta:hover{border-color:var(--ink);background:rgba(28,23,53,.04);transform:translateY(-1px);}
.menu-btn{display:none;width:40px;height:40px;align-items:center;justify-content:center;flex-direction:column;gap:6px;border:1px solid transparent;border-radius:var(--r-btn);}
.menu-btn span{display:block;width:20px;height:1.5px;background:var(--ink);}
.mobile-panel{
  position:fixed;inset:0;z-index:80;background:var(--paper);
  display:none;flex-direction:column;padding:96px 24px 32px;
}
.mobile-panel.is-open{display:flex;}
.mobile-close{position:absolute;top:26px;right:24px;font-size:15px;color:var(--ink);border:1px solid var(--line-soft);border-radius:var(--r-btn);padding:6px 14px;}
.mobile-links{display:flex;flex-direction:column;}
.mobile-links a{font-size:17px;font-weight:500;color:var(--ink);padding:20px 0;border-bottom:1px solid var(--line);}
.mobile-links a.is-active{color:var(--ink);font-weight:700;}
.no-scroll{overflow:hidden;}

/* ============ buttons ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;transition:background .2s ease,transform .2s ease,color .2s ease,border-color .2s ease;}
.btn-gold{background:var(--gold);color:var(--ink);}
.btn-gold:hover{background:var(--gold-hi);transform:translateY(-1px);}
.btn-outline-light{border:1px solid rgba(255,255,255,.45);color:#fff;background:transparent;}
.btn-outline-light:hover{background:rgba(255,255,255,.08);border-color:#fff;}
.btn-line{border:1px solid var(--line-soft);color:var(--ink);background:transparent;height:44px;padding:0 20px;font-size:14px;}
.btn-line:hover{border-color:var(--ink);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);}
.link-arrow i{font-style:normal;color:var(--gold);transition:transform .2s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ hero ============ */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(900px 520px at 82% -12%,#282152 0%,rgba(40,33,82,0) 62%),
    linear-gradient(180deg,#1C1735 0%,#120F24 100%);
  padding:150px 0 96px;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.75;
  background-image:
    radial-gradient(1.6px 1.6px at 8% 24%,rgba(255,255,255,.55),transparent 60%),
    radial-gradient(1.3px 1.3px at 18% 68%,rgba(255,255,255,.38),transparent 60%),
    radial-gradient(1.8px 1.8px at 31% 16%,rgba(255,255,255,.5),transparent 60%),
    radial-gradient(1.2px 1.2px at 44% 82%,rgba(255,255,255,.34),transparent 60%),
    radial-gradient(1.7px 1.7px at 57% 32%,rgba(255,255,255,.46),transparent 60%),
    radial-gradient(1.3px 1.3px at 68% 74%,rgba(255,255,255,.36),transparent 60%),
    radial-gradient(1.9px 1.9px at 79% 20%,rgba(255,255,255,.5),transparent 60%),
    radial-gradient(1.2px 1.2px at 88% 58%,rgba(255,255,255,.32),transparent 60%),
    radial-gradient(1.5px 1.5px at 94% 88%,rgba(255,255,255,.42),transparent 60%),
    radial-gradient(1.4px 1.4px at 12% 92%,rgba(255,255,255,.3),transparent 60%);
  background-repeat:no-repeat;
}
.hero::after{
  content:"";position:absolute;left:-10%;top:44%;width:130%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.14),transparent);
  transform:rotate(-7deg);pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;
  color:rgba(255,255,255,.78);border:1px solid rgba(255,255,255,.2);border-radius:999px;padding:5px 14px;
}
.hero-tag b{width:5px;height:5px;border-radius:50%;background:var(--aurora);display:inline-block;}
.hero h1{
  margin:24px 0 20px;font-size:clamp(30px,4.4vw,56px);line-height:1.22;font-weight:700;letter-spacing:-.015em;
}
.hero h1 em{font-style:normal;color:var(--gold);}
.hero-sub{font-size:17px;line-height:1.85;color:var(--muted-dark);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-figure{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid rgba(255,255,255,.14);aspect-ratio:16/10;}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-chip{
  position:absolute;right:14px;bottom:14px;background:rgba(18,15,36,.78);
  border:1px solid rgba(255,255,255,.16);border-radius:8px;padding:8px 12px;
  font-size:12px;line-height:1.5;color:rgba(255,255,255,.86);
}
.hero-chip strong{color:var(--gold);font-weight:700;}
.hero-trust{
  position:relative;z-index:2;margin-top:64px;padding-top:24px;border-top:1px solid var(--line-dark);
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.hero-trust div{font-size:14px;color:rgba(255,255,255,.72);}
.hero-trust div + div{border-left:1px solid var(--line-dark);padding-left:24px;}
.hero-trust b{display:block;color:#fff;font-size:15px;font-weight:600;margin-bottom:2px;}

/* ============ pains ============ */
.pains{background:var(--paper);}
.pain-list{margin-top:44px;max-width:860px;}
.pain-item{padding:22px 0 22px 22px;border-left:3px solid var(--gold);border-bottom:1px solid var(--line);}
.pain-item:first-child{border-top:1px solid var(--line);}
.pain-q{font-size:20px;line-height:1.6;font-weight:600;color:var(--ink);}
.pain-note{font-size:14px;color:var(--muted);margin-top:6px;}

/* ============ plans ============ */
.plans{background:#FFFFFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.plans-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.plan-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;margin-top:44px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.card:hover{border-color:#CFC8B8;box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.plan-main{overflow:hidden;display:flex;flex-direction:column;}
.plan-main .thumb{aspect-ratio:16/9;overflow:hidden;}
.plan-main .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.plan-main:hover .thumb img{transform:scale(1.03);}
.plan-body{padding:30px 32px 32px;}
.plan-num{font-size:13px;letter-spacing:.12em;color:var(--muted);}
.plan-body .h3{margin:10px 0 12px;}
.plan-body p{font-size:15px;line-height:1.85;color:var(--muted);}
.plan-body .link-arrow{margin-top:20px;}
.plan-side{display:flex;flex-direction:column;gap:24px;}
.plan-mini{flex:1;padding:28px 30px;display:flex;flex-direction:column;justify-content:space-between;background:var(--paper);}
.plan-mini .h3{font-size:20px;margin:8px 0 10px;}
.plan-mini p{font-size:15px;line-height:1.8;color:var(--muted);}
.plan-mini .link-arrow{margin-top:16px;}

/* ============ stats ============ */
.stats{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(180deg,#1C1735 0%,#15112C 100%);
}
.stats::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background-image:
    radial-gradient(1.4px 1.4px at 14% 30%,rgba(255,255,255,.45),transparent 60%),
    radial-gradient(1.2px 1.2px at 36% 74%,rgba(255,255,255,.32),transparent 60%),
    radial-gradient(1.6px 1.6px at 62% 22%,rgba(255,255,255,.4),transparent 60%),
    radial-gradient(1.1px 1.1px at 82% 66%,rgba(255,255,255,.3),transparent 60%),
    radial-gradient(1.5px 1.5px at 92% 26%,rgba(255,255,255,.38),transparent 60%);
  background-repeat:no-repeat;
}
.stats .container{position:relative;z-index:2;}
.stats .h2{color:#fff;}
.stats .lead{color:rgba(255,255,255,.68);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:52px;}
.stat-item{padding:0 24px;}
.stat-item:first-child{padding-left:0;}
.stat-item + .stat-item{border-left:1px solid var(--line-dark);}
.stat-num{font-size:clamp(32px,4vw,50px);font-weight:700;color:var(--gold);line-height:1.1;letter-spacing:-.02em;}
.stat-num small{font-size:.42em;font-weight:600;margin-left:4px;color:var(--gold);}
.stat-cap{font-size:13px;color:rgba(255,255,255,.66);margin-top:10px;}
.stat-band{margin-top:56px;position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-dark);aspect-ratio:21/9;}
.stat-band img{width:100%;height:100%;object-fit:cover;filter:brightness(.8);}
.stat-band span{
  position:absolute;left:24px;bottom:20px;font-size:14px;color:rgba(255,255,255,.88);
  background:rgba(18,15,36,.6);border:1px solid rgba(255,255,255,.16);border-radius:8px;padding:6px 14px;
}

/* ============ news ============ */
.news{background:var(--paper);}
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.news-lead{
  display:grid;grid-template-columns:5fr 7fr;gap:0;margin-top:40px;overflow:hidden;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.news-lead:hover{border-color:#CFC8B8;box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.news-lead-img{aspect-ratio:16/11;overflow:hidden;}
.news-lead-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-lead:hover .news-lead-img img{transform:scale(1.03);}
.news-lead-body{padding:32px;display:flex;flex-direction:column;gap:12px;justify-content:center;}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  border:1px solid var(--aurora);color:#2E8574;border-radius:999px;
  padding:2px 10px;font-size:12px;line-height:1.7;background:transparent;
}
.news-lead-body h3{font-size:22px;line-height:1.45;font-weight:600;color:var(--ink);}
.news-lead-body p{font-size:15px;line-height:1.85;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px;}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.news-card:hover{border-color:#CFC8B8;box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.news-card .thumb{aspect-ratio:16/10;overflow:hidden;}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .thumb img{transform:scale(1.03);}
.news-card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-card-body h3{font-size:17px;line-height:1.55;font-weight:600;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card-body p{font-size:14px;line-height:1.8;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted);}
.empty-state{
  margin-top:40px;min-height:180px;border:1px dashed var(--line-soft);border-radius:var(--r-card);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:32px;text-align:center;
}
.empty-state strong{font-size:16px;color:var(--ink);font-weight:600;}
.empty-state span{font-size:14px;color:var(--muted);}

/* ============ contact ============ */
.contact{background:#FFFFFF;border-top:1px solid var(--line);}
.contact-grid{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:start;}
.trust-list{margin-top:32px;}
.trust-list li{padding:14px 0;border-top:1px solid var(--line);font-size:15px;color:var(--muted);}
.trust-list li b{display:block;color:var(--ink);font-weight:600;font-size:15px;margin-bottom:2px;}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:32px;box-shadow:0 20px 50px -40px rgba(23,18,53,.5);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;border:1px solid var(--line-soft);border-radius:var(--r-btn);background:#fff;
  padding:0 14px;height:48px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;padding:12px 14px;min-height:104px;resize:vertical;line-height:1.8;}
.field input::placeholder,.field textarea::placeholder{color:#A8A2B4;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 2px rgba(119,217,196,.28);
}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);line-height:1.7;}
.check-row input{width:16px;height:16px;margin-top:3px;flex:none;accent-color:#1C1735;}
.form-card .btn{width:100%;margin-top:20px;}
.form-note{font-size:12.5px;color:var(--muted);margin-top:12px;text-align:center;}
.privacy-box{border-top:1px solid var(--line);margin-top:22px;padding-top:16px;font-size:13px;line-height:1.8;color:#5E5A72;}

/* ============ faq ============ */
.faq{background:var(--paper);border-top:1px solid var(--line);}
.faq-list{margin-top:40px;max-width:760px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:20px;font-weight:400;color:var(--muted);transition:color .2s ease;line-height:1;}
.faq-item[open] summary::after{content:"−";color:var(--gold);}
.faq-item summary:hover{color:#000;}
.faq-answer{padding:0 0 24px;font-size:15px;line-height:1.9;color:var(--muted);}
.faq-item[open] .faq-answer{animation:fadeIn .18s ease-out;}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

/* ============ footer ============ */
.site-footer{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(180deg,#1C1735 0%,#120F24 100%);
  padding:72px 0 0;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:
    radial-gradient(1.4px 1.4px at 10% 26%,rgba(255,255,255,.4),transparent 60%),
    radial-gradient(1.2px 1.2px at 28% 68%,rgba(255,255,255,.3),transparent 60%),
    radial-gradient(1.5px 1.5px at 52% 20%,rgba(255,255,255,.36),transparent 60%),
    radial-gradient(1.1px 1.1px at 72% 62%,rgba(255,255,255,.28),transparent 60%),
    radial-gradient(1.6px 1.6px at 88% 32%,rgba(255,255,255,.34),transparent 60%);
  background-repeat:no-repeat;
}
.site-footer .container{position:relative;z-index:2;}
.footer-grid{display:grid;grid-template-columns:4fr 3fr 3fr 3fr;gap:40px;}
.footer-brand{display:inline-flex;align-items:center;gap:8px;font-size:18px;font-weight:700;letter-spacing:.02em;}
.footer-brand .brand-dot{background:var(--gold);}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);margin-top:16px;max-width:300px;}
.footer-contact{font-size:14px;color:rgba(255,255,255,.66);margin-top:18px;line-height:2;}
.footer-contact b{color:#fff;font-weight:600;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-links li{margin-bottom:12px;}
.footer-links a{font-size:15px;color:rgba(255,255,255,.66);transition:color .2s ease;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:6px;text-decoration-color:var(--gold);}
.footer-col + .footer-col{border-left:1px solid var(--line-dark);padding-left:32px;}
.subscribe{display:flex;gap:8px;}
.subscribe input{
  flex:1;height:42px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06);
  color:#fff;border-radius:var(--r-btn);padding:0 12px;font-size:14px;
}
.subscribe input::placeholder{color:rgba(255,255,255,.42);}
.subscribe input:focus{outline:none;border-color:var(--aurora);box-shadow:0 0 0 2px rgba(119,217,196,.25);}
.subscribe button{
  width:42px;height:42px;border-radius:var(--r-btn);background:var(--gold);color:var(--ink);
  font-size:16px;font-weight:700;display:flex;align-items:center;justify-content:center;
  transition:background .2s ease,transform .2s ease;
}
.subscribe button:hover{background:var(--gold-hi);transform:translateY(-1px);}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line-dark);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.55);}
.footer-bottom a:hover{color:#fff;}

/* ============ responsive ============ */
@media (max-width:1024px){
  .container{padding:0 28px;}
  .section{padding:72px 0;}
  .hero{padding:120px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-sub{max-width:100%;}
  .hero-figure{aspect-ratio:16/10;}
  .plan-grid{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;gap:36px;}
  .news-lead{grid-template-columns:1fr;}
  .news-lead-img{aspect-ratio:16/9;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .stat-grid{grid-template-columns:repeat(2,1fr);row-gap:36px;}
  .stat-item{padding:0 20px;}
  .stat-item:nth-child(3){padding-left:0;border-left:0;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-col + .footer-col{border-left:0;padding-left:0;}
  .footer-col:nth-child(2){border-left:1px solid var(--line-dark);padding-left:32px;}
}
@media (max-width:768px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .menu-btn{display:flex;}
  .brand{font-size:16px;}
  .hero h1{font-size:clamp(28px,7vw,38px);}
  .hero-trust{grid-template-columns:1fr;gap:0;}
  .hero-trust div + div{border-left:0;padding-left:0;border-top:1px solid var(--line-dark);margin-top:14px;padding-top:14px;}
  .pain-q{font-size:18px;}
  .news-grid{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .stat-item{padding:0 14px;}
  .stat-item:nth-child(odd){padding-left:0;}
  .stat-item:nth-child(even){border-left:1px solid var(--line-dark);}
  .stat-item:nth-child(3){border-left:0;}
  .form-card{padding:24px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-col:nth-child(2){border-left:0;padding-left:0;border-top:1px solid var(--line-dark);padding-top:28px;}
  .footer-desc{max-width:100%;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .hero{padding:104px 0 56px;}
  .hero-actions .btn{width:100%;}
  .plan-body,.plan-mini{padding:22px;}
  .news-lead-body{padding:22px;}
  .stat-grid{grid-template-columns:1fr;}
  .stat-item{padding:0;border-left:0 !important;}
  .stat-item + .stat-item{border-top:1px solid var(--line-dark);padding-top:20px;margin-top:20px;}
  .footer-bottom{font-size:12px;}
}

/* roulang page: category1 */
:root{
  --ink:#1C1735;
  --ink-deep:#120F24;
  --gold:#E0B15C;
  --gold-hi:#EFC57C;
  --teal:#77D9C4;
  --paper:#F7F5F0;
  --card:#FFFFFF;
  --line:#E6E1D6;
  --line-soft:#EFEAE0;
  --text:#171528;
  --muted:#5E5A72;
  --muted-2:#8A8699;
  --r-card:14px;
  --r-btn:8px;
  --shadow-card:0 18px 40px -24px rgba(23,18,53,.35);
  --shadow-float:0 40px 80px -30px rgba(12,11,30,.45);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
.site-body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
input,textarea{font-family:inherit;font-size:15px;color:var(--text);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;}

.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 40px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex;
  align-items:center;
  gap:36px;
  height:76px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:17px;
  font-weight:600;
  letter-spacing:-.01em;
  color:var(--ink);
  white-space:nowrap;
}
.brand-dot{
  width:6px;
  height:6px;
  border-radius:999px;
  background:var(--gold);
  flex:none;
  transition:background .2s ease-out;
}
.brand:hover .brand-dot{background:var(--gold-hi);}
.nav-links{
  display:flex;
  align-items:center;
  gap:36px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:15px;
  color:#3A3651;
  padding:4px 0;
  transition:color .2s ease-out;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-9px;
  transform:translateX(-50%);
  height:2px;
  width:0;
  background:var(--gold);
  transition:width .2s ease-out;
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:36%;}
.nav-link.active{color:var(--ink);font-weight:600;}
.nav-link.active::after{width:60%;}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:40px;
  padding:0 20px;
  border:1px solid rgba(28,23,53,.28);
  border-radius:var(--r-btn);
  font-size:14px;
  color:var(--ink);
  white-space:nowrap;
  transition:background .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.nav-cta:hover{background:rgba(28,23,53,.07);border-color:var(--ink);transform:translateY(-1px);}
.menu-btn{
  display:none;
  width:40px;
  height:40px;
  border:1px solid rgba(28,23,53,.22);
  border-radius:var(--r-btn);
  background:transparent;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.menu-btn span{display:block;width:16px;height:1.5px;background:var(--ink);transition:transform .2s ease-out;}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(3.25px) rotate(45deg);}
.menu-btn[aria-expanded="true"] span:nth-child(2){transform:translateY(-3.25px) rotate(-45deg);}

/* mobile panel */
.mobile-panel{
  position:fixed;
  inset:0;
  z-index:80;
  background:var(--paper);
  padding:22px 24px 40px;
  display:flex;
  flex-direction:column;
  transform:translateY(-102%);
  opacity:0;
  visibility:hidden;
  transition:transform .22s ease-out,opacity .22s ease-out,visibility .22s;
}
.mobile-panel.open{transform:translateY(0);opacity:1;visibility:visible;}
.mobile-panel-head{display:flex;align-items:center;justify-content:space-between;}
.panel-close{
  background:transparent;
  border:none;
  font-size:15px;
  color:var(--muted);
  padding:6px 2px;
}
.panel-close:hover{color:var(--ink);}
.mobile-links{display:flex;flex-direction:column;margin-top:36px;}
.mobile-links a{
  padding:18px 2px;
  font-size:17px;
  font-weight:500;
  color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mobile-links a.is-active{color:var(--ink);font-weight:600;}
.mobile-links a.is-active::before{
  content:"";
  display:inline-block;
  width:6px;
  height:6px;
  border-radius:999px;
  background:var(--gold);
  margin-right:10px;
  vertical-align:middle;
}
.mobile-cta{margin-top:28px;}

/* ---------- buttons ---------- */
.btn-gold{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border:none;
  border-radius:var(--r-btn);
  background:var(--gold);
  color:var(--ink);
  font-size:15px;
  font-weight:600;
  transition:background .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-gold:hover{background:var(--gold-hi);transform:translateY(-1px);box-shadow:0 14px 28px -18px rgba(224,177,92,.9);}
.btn-gold:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border:1px solid rgba(255,255,255,.4);
  border-radius:var(--r-btn);
  background:transparent;
  color:#fff;
  font-size:15px;
  transition:background .2s ease-out,border-color .2s ease-out;
}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.7);}
.btn-line{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border:1px solid rgba(28,23,53,.24);
  border-radius:var(--r-btn);
  background:transparent;
  color:var(--ink);
  font-size:15px;
  transition:background .2s ease-out,border-color .2s ease-out;
}
.btn-line:hover{background:rgba(28,23,53,.06);border-color:var(--ink);}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  color:var(--ink);
  font-weight:600;
}
.text-link .arrow{transition:transform .2s ease-out;color:var(--gold);}
.text-link:hover .arrow{transform:translateX(4px);}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  color:#fff;
  padding:86px 0 70px;
  background-color:var(--ink-deep);
  background-image:
    radial-gradient(1.4px 1.4px at 8% 24%,rgba(255,255,255,.55),transparent 60%),
    radial-gradient(1.2px 1.2px at 17% 68%,rgba(255,255,255,.42),transparent 60%),
    radial-gradient(1.6px 1.6px at 26% 14%,rgba(255,255,255,.5),transparent 60%),
    radial-gradient(1.1px 1.1px at 33% 78%,rgba(255,255,255,.35),transparent 60%),
    radial-gradient(1.4px 1.4px at 41% 36%,rgba(255,255,255,.46),transparent 60%),
    radial-gradient(1.2px 1.2px at 48% 88%,rgba(255,255,255,.3),transparent 60%),
    radial-gradient(1.6px 1.6px at 56% 22%,rgba(255,255,255,.5),transparent 60%),
    radial-gradient(1.1px 1.1px at 63% 62%,rgba(255,255,255,.36),transparent 60%),
    radial-gradient(1.4px 1.4px at 71% 10%,rgba(255,255,255,.44),transparent 60%),
    radial-gradient(1.2px 1.2px at 78% 74%,rgba(255,255,255,.34),transparent 60%),
    radial-gradient(1.6px 1.6px at 86% 32%,rgba(255,255,255,.48),transparent 60%),
    radial-gradient(1.1px 1.1px at 93% 84%,rgba(255,255,255,.3),transparent 60%),
    radial-gradient(1.3px 1.3px at 5% 90%,rgba(255,255,255,.32),transparent 60%),
    radial-gradient(1.3px 1.3px at 22% 46%,rgba(255,255,255,.3),transparent 60%),
    radial-gradient(1.3px 1.3px at 59% 44%,rgba(255,255,255,.28),transparent 60%),
    radial-gradient(1.3px 1.3px at 90% 58%,rgba(255,255,255,.3),transparent 60%),
    linear-gradient(158deg,#1C1735 0%,#120F24 100%);
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(102deg,transparent 46%,rgba(255,255,255,.06) 47%,transparent 48%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.55);
  margin-bottom:26px;
}
.crumb a{transition:color .2s ease-out;}
.crumb a:hover{color:#fff;}
.crumb span.sep{color:rgba(255,255,255,.3);}
.crumb .current{color:rgba(255,255,255,.85);}
.page-hero h1{
  font-size:clamp(30px,4vw,52px);
  line-height:1.24;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:860px;
}
.hero-lead{
  margin-top:20px;
  max-width:620px;
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.72);
}
.hero-chips{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:30px;
}
.hero-chip{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid rgba(119,217,196,.42);
  color:var(--teal);
  font-size:13px;
}
.hero-divider{
  margin-top:40px;
  height:1px;
  background:rgba(255,255,255,.12);
}
.hero-notes{
  display:flex;
  flex-wrap:wrap;
  gap:14px 40px;
  margin-top:22px;
  font-size:14px;
  color:rgba(255,255,255,.6);
}
.hero-notes span{display:inline-flex;align-items:center;gap:8px;}
.hero-notes span::before{
  content:"";
  width:5px;height:5px;border-radius:999px;background:var(--gold);flex:none;
}

/* ---------- category layout ---------- */
.cat-main{padding:72px 0 88px;background:var(--paper);}
.cat-layout{
  display:grid;
  grid-template-columns:236px minmax(0,1fr);
  gap:64px;
  align-items:start;
}
.anchor-nav{
  position:sticky;
  top:104px;
}
.anchor-title{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--muted-2);
  margin-bottom:18px;
}
.anchor-link{
  display:block;
  padding:9px 0 9px 14px;
  font-size:14px;
  color:var(--muted);
  border-left:2px solid transparent;
  transition:color .2s ease-out,border-color .2s ease-out;
}
.anchor-link:hover{color:var(--ink);}
.anchor-link.active{
  color:var(--ink);
  font-weight:600;
  border-left-color:var(--gold);
}
.anchor-tip{
  margin-top:28px;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:13px;
  line-height:1.8;
  color:var(--muted-2);
}

.cat-content{min-width:0;}
.flow-section{
  padding:0 0 40px;
  margin-bottom:40px;
  border-bottom:1px solid var(--line);
}
.flow-section:last-of-type{border-bottom:none;margin-bottom:0;padding-bottom:0;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--muted-2);
  margin-bottom:14px;
}
.flow-section h2{
  font-size:clamp(23px,2.4vw,30px);
  line-height:1.35;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
  margin-bottom:18px;
}
.flow-section p{
  font-size:16px;
  line-height:1.9;
  color:#3A3651;
  margin-bottom:14px;
}
.flow-section p:last-child{margin-bottom:0;}
.flow-section p strong{color:var(--ink);font-weight:600;}

.flow-figure{
  margin:26px 0 8px;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--card);
}
.flow-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.flow-figure figcaption{
  padding:12px 18px;
  font-size:13px;
  color:var(--muted-2);
  border-top:1px solid var(--line-soft);
  background:var(--card);
}

.mini-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
  margin-top:24px;
}
.mini-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 24px;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.mini-card:hover{transform:translateY(-2px);border-color:#CFC8B8;box-shadow:var(--shadow-card);}
.mini-card h3{
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:8px;
}
.mini-card p{
  font-size:14px;
  line-height:1.8;
  color:var(--muted);
  margin:0;
}
.mini-card .tag{
  display:inline-block;
  font-size:12px;
  color:var(--teal);
  border:1px solid rgba(119,217,196,.55);
  border-radius:999px;
  padding:1px 10px;
  margin-bottom:12px;
}

.spec-strip{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  margin-top:24px;
}
.spec-item{
  background:var(--card);
  padding:22px 22px 20px;
}
.spec-num{
  font-size:28px;
  font-weight:700;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.spec-num em{
  font-style:normal;
  font-size:14px;
  font-weight:500;
  color:var(--muted-2);
  margin-left:4px;
}
.spec-label{
  margin-top:6px;
  font-size:13px;
  color:var(--muted);
  line-height:1.7;
}

.spec-table-wrap{
  margin-top:24px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--card);
}
.spec-table{
  width:100%;
  border-collapse:collapse;
  font-size:14.5px;
}
.spec-table th,.spec-table td{
  padding:14px 18px;
  text-align:left;
  border-bottom:1px solid var(--line-soft);
  vertical-align:top;
  line-height:1.75;
}
.spec-table thead th{
  background:#FAF8F3;
  font-weight:600;
  color:var(--ink);
  font-size:13.5px;
  letter-spacing:.04em;
}
.spec-table tbody tr:last-child td{border-bottom:none;}
.spec-table tbody td:first-child{font-weight:600;color:var(--ink);white-space:nowrap;}
.spec-table tbody td{color:var(--muted);}

/* FAQ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 2px;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  font-size:20px;
  font-weight:400;
  color:var(--muted-2);
  transition:transform .18s ease-out,color .18s ease-out;
  line-height:1;
}
.faq-item[open] summary::after{
  content:"−";
  color:var(--gold);
}
.faq-body{
  padding:0 2px 22px;
  font-size:15px;
  line-height:1.9;
  color:var(--muted);
  max-width:720px;
}
.faq-item summary:hover::after{color:var(--ink);}

/* cross links */
.cross-section{padding:0 0 80px;background:var(--paper);}
.cross-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  margin-top:26px;
}
.cross-card{
  display:block;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px 30px;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.cross-card:hover{transform:translateY(-2px);border-color:#CFC8B8;box-shadow:var(--shadow-card);}
.cross-card .kicker{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--muted-2);
  margin-bottom:10px;
  display:block;
}
.cross-card h3{
  font-size:20px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:10px;
}
.cross-card p{
  font-size:14.5px;
  line-height:1.85;
  color:var(--muted);
  margin-bottom:16px;
}

/* contact */
.contact-block{
  background:var(--paper);
  padding:0 0 96px;
}
.contact-panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:48px;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;
}
.contact-copy h2{
  font-size:clamp(24px,2.4vw,32px);
  line-height:1.35;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.01em;
  margin-bottom:16px;
}
.contact-copy p{
  font-size:15.5px;
  line-height:1.9;
  color:var(--muted);
  margin-bottom:14px;
}
.trust-list{
  margin-top:26px;
  border-top:1px solid var(--line);
}
.trust-list li{
  padding:14px 0;
  border-bottom:1px solid var(--line-soft);
  font-size:14px;
  color:#3A3651;
  display:flex;
  gap:10px;
  align-items:flex-start;
}
.trust-list li::before{
  content:"";
  width:5px;
  height:5px;
  border-radius:999px;
  background:var(--gold);
  margin-top:10px;
  flex:none;
}
.form-field{margin-bottom:18px;}
.form-field label{
  display:block;
  font-size:13px;
  color:var(--muted);
  margin-bottom:7px;
}
.form-field input,
.form-field textarea{
  width:100%;
  border:1px solid #DCD6C8;
  border-radius:8px;
  padding:12px 14px;
  background:#fff;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.form-field input{height:48px;padding:0 14px;}
.form-field textarea{min-height:112px;resize:vertical;line-height:1.8;}
.form-field input:focus,
.form-field textarea:focus{
  outline:none;
  border-color:var(--ink);
  box-shadow:0 0 0 3px rgba(119,217,196,.28);
}
.check-row{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:13px;
  line-height:1.75;
  color:var(--muted);
  margin:6px 0 20px;
}
.check-row input{
  width:16px;
  height:16px;
  margin-top:4px;
  accent-color:#1C1735;
  flex:none;
}
.form-note{
  margin-top:12px;
  font-size:12.5px;
  line-height:1.75;
  color:var(--muted-2);
}
.form-submit{width:100%;}

/* cta strip */
.cta-strip{
  position:relative;
  overflow:hidden;
  background-color:var(--ink);
  background-image:
    radial-gradient(1.3px 1.3px at 10% 30%,rgba(255,255,255,.4),transparent 60%),
    radial-gradient(1.3px 1.3px at 24% 74%,rgba(255,255,255,.3),transparent 60%),
    radial-gradient(1.3px 1.3px at 46% 20%,rgba(255,255,255,.36),transparent 60%),
    radial-gradient(1.3px 1.3px at 66% 66%,rgba(255,255,255,.3),transparent 60%),
    radial-gradient(1.3px 1.3px at 84% 28%,rgba(255,255,255,.36),transparent 60%),
    radial-gradient(1.3px 1.3px at 94% 80%,rgba(255,255,255,.26),transparent 60%);
  color:#fff;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:40px 0;
  flex-wrap:wrap;
}
.cta-inner p{
  font-size:19px;
  font-weight:600;
  letter-spacing:-.01em;
}
.cta-inner span{
  display:block;
  margin-top:6px;
  font-size:14px;
  font-weight:400;
  color:rgba(255,255,255,.62);
}

/* ---------- footer ---------- */
.site-footer{
  background-color:var(--ink-deep);
  background-image:
    radial-gradient(1.2px 1.2px at 6% 22%,rgba(255,255,255,.35),transparent 60%),
    radial-gradient(1.2px 1.2px at 18% 70%,rgba(255,255,255,.26),transparent 60%),
    radial-gradient(1.2px 1.2px at 33% 34%,rgba(255,255,255,.3),transparent 60%),
    radial-gradient(1.2px 1.2px at 52% 82%,rgba(255,255,255,.22),transparent 60%),
    radial-gradient(1.2px 1.2px at 68% 26%,rgba(255,255,255,.3),transparent 60%),
    radial-gradient(1.2px 1.2px at 82% 66%,rgba(255,255,255,.24),transparent 60%),
    radial-gradient(1.2px 1.2px at 95% 38%,rgba(255,255,255,.28),transparent 60%);
  color:#fff;
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.35fr;
  gap:0;
}
.footer-col{
  padding:0 32px;
  border-left:1px solid rgba(255,255,255,.1);
}
.footer-col:first-child{padding-left:0;border-left:none;}
.footer-col:last-child{padding-right:0;}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:17px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-brand .brand-dot{background:var(--gold);}
.footer-desc{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.66);
  margin-bottom:16px;
}
.footer-contact{
  font-size:13.5px;
  line-height:2;
  color:rgba(255,255,255,.62);
}
.footer-contact b{color:rgba(255,255,255,.86);font-weight:600;}
.footer-title{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-links li{margin-bottom:11px;}
.footer-links a{
  font-size:14.5px;
  color:rgba(255,255,255,.66);
  transition:color .2s ease-out;
  text-underline-offset:6px;
}
.footer-links a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--gold);text-decoration-thickness:1px;}
.subscribe{display:flex;gap:8px;}
.subscribe input{
  flex:1;
  min-width:0;
  height:42px;
  border:1px solid rgba(255,255,255,.22);
  border-radius:8px;
  background:rgba(255,255,255,.05);
  padding:0 14px;
  color:#fff;
  font-size:14px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.subscribe input::placeholder{color:rgba(255,255,255,.42);}
.subscribe input:focus{
  outline:none;
  border-color:rgba(119,217,196,.7);
  box-shadow:0 0 0 3px rgba(119,217,196,.2);
}
.subscribe button{
  width:42px;
  height:42px;
  flex:none;
  border:1px solid rgba(224,177,92,.6);
  border-radius:8px;
  background:transparent;
  color:var(--gold);
  font-size:16px;
  transition:background .2s ease-out,color .2s ease-out;
}
.subscribe button:hover{background:var(--gold);color:var(--ink);}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.48);
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 28px;}
  .nav{gap:24px;}
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .menu-btn{display:flex;margin-left:auto;}
  .cat-layout{grid-template-columns:1fr;gap:34px;}
  .anchor-nav{position:static;}
  .anchor-title{margin-bottom:10px;}
  .anchor-nav-scroll{
    display:flex;
    gap:8px;
    overflow-x:auto;
    padding-bottom:10px;
    border-bottom:1px solid var(--line);
    -webkit-overflow-scrolling:touch;
  }
  .anchor-nav-scroll::-webkit-scrollbar{height:0;}
  .anchor-link{
    white-space:nowrap;
    padding:6px 4px 10px;
    border-left:none;
    border-bottom:2px solid transparent;
    font-size:14px;
  }
  .anchor-link.active{border-bottom-color:var(--gold);}
  .anchor-tip{display:none;}
  .contact-panel{grid-template-columns:1fr;padding:34px 28px;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 0;}
  .footer-col{padding:0 24px;}
  .footer-col:nth-child(odd){padding-left:0;border-left:none;}
  .footer-col:nth-child(even){padding-right:0;}
  .footer-col:nth-child(n+3){border-top:1px solid rgba(255,255,255,.1);padding-top:28px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .page-hero{padding:56px 0 48px;}
  .hero-lead{font-size:15.5px;}
  .hero-notes{gap:10px 22px;font-size:13px;}
  .cat-main{padding:48px 0 64px;}
  .mini-grid{grid-template-columns:1fr;}
  .spec-strip{grid-template-columns:1fr;}
  .spec-item{padding:18px 20px;}
  .cross-grid{grid-template-columns:1fr;}
  .cross-section{padding-bottom:56px;}
  .contact-block{padding-bottom:64px;}
  .contact-panel{padding:26px 20px;}
  .cta-inner{padding:32px 0;}
  .cta-inner p{font-size:17px;}
  .flow-figure img{aspect-ratio:4/3;}
  .spec-table th,.spec-table td{padding:12px 14px;font-size:13.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-col{padding:0;border-left:none;}
  .footer-col + .footer-col{border-top:1px solid rgba(255,255,255,.1);padding-top:26px;margin-top:26px;}
  .site-footer{padding-top:56px;}
}
@media (max-width:519px){
  .page-hero h1{font-size:28px;}
  .hero-chip{font-size:12px;height:28px;padding:0 12px;}
  .btn-gold,.btn-ghost,.btn-line{width:100%;}
  .cta-inner{gap:18px;}
  .flow-section{padding-bottom:32px;margin-bottom:32px;}
}

/* roulang page: article */
:root{
  --ink:#1C1735;
  --night:#120F24;
  --gold:#E0B15C;
  --gold-soft:#EBC178;
  --aurora:#77D9C4;
  --paper:#F7F5F0;
  --card:#FFFFFF;
  --line:#E6E1D6;
  --line-strong:#CFC8B8;
  --text:#171528;
  --text-soft:#2A2740;
  --muted:#5E5A72;
  --muted-light:rgba(255,255,255,.68);
  --radius:14px;
  --radius-sm:8px;
  --shadow-hover:0 18px 40px -24px rgba(23,18,53,.35);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:0;list-style:none;}
:focus-visible{outline:2px solid var(--aurora);outline-offset:3px;}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 40px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;height:76px;}
.brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text);
  white-space:nowrap;
}
.brand-dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--gold);
  box-shadow:0 0 0 4px rgba(224,177,92,.18);
  flex:none;
}
.nav-links{display:flex;align-items:center;gap:36px;margin:0 auto;}
.nav-link{
  position:relative;font-size:15px;color:#3A3651;padding:8px 0;
  transition:color .2s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;
  width:60%;height:2px;background:var(--gold);
  transform:translateX(-50%) scaleX(0);
  transform-origin:center;
  transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:translateX(-50%) scaleX(1);}
.nav-link.active{color:var(--ink);font-weight:600;}
.nav-link.active::after{transform:translateX(-50%) scaleX(1);}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;
  border:1px solid var(--line-strong);border-radius:var(--radius-sm);
  font-size:14px;font-weight:500;color:var(--ink);background:transparent;
  transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.nav-cta:hover{background:var(--ink);border-color:var(--ink);color:#fff;}
.menu-btn{
  display:none;width:40px;height:40px;margin-left:auto;padding:0;
  border:0;background:transparent;cursor:pointer;
  flex-direction:column;justify-content:center;gap:6px;align-items:flex-end;
}
.menu-btn span{display:block;width:22px;height:1.5px;background:var(--ink);transition:transform .2s ease-out;}
.menu-btn:hover span:first-child{transform:translateY(-1px);}
.menu-btn:hover span:last-child{transform:translateY(1px);}

.mobile-panel{
  position:fixed;inset:0;z-index:90;
  background:var(--paper);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;
}
.mobile-panel.open{opacity:1;visibility:visible;transform:translateY(0);}
.mobile-panel-inner{height:100%;padding:22px 20px 40px;display:flex;flex-direction:column;overflow-y:auto;}
.mobile-panel-top{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:18px;margin-bottom:10px;border-bottom:1px solid var(--line);
}
.menu-close{border:0;background:transparent;font-size:15px;color:var(--muted);cursor:pointer;padding:6px;}
.menu-close:hover{color:var(--ink);}
.mobile-link{
  display:block;padding:18px 0;font-size:17px;font-weight:500;
  color:var(--text);border-bottom:1px solid var(--line);
}
.mobile-link:hover{color:var(--ink);}
.mobile-cta{
  margin-top:28px;height:50px;display:flex;align-items:center;justify-content:center;
  background:var(--ink);color:#fff;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;
}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease-out,color .2s ease-out,transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.btn-gold{background:var(--gold);color:var(--ink);}
.btn-gold:hover{background:var(--gold-soft);transform:translateY(-1px);box-shadow:0 12px 26px -16px rgba(224,177,92,.9);}
.btn-dark{background:var(--ink);color:#fff;}
.btn-dark:hover{background:#2A2450;transform:translateY(-1px);}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;line-height:1.6;padding:3px 12px;border-radius:999px;
  border:1px solid rgba(119,217,196,.6);color:var(--aurora);
}
.tag-light{
  border-color:#A9E0D3;color:#1F7A66;background:#F0FBF8;
}
.more-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ink);
}
.more-link span{color:var(--gold);transition:transform .2s ease-out;}
.more-link:hover span{transform:translateX(4px);}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#1C1735 0%,#120F24 100%);
  color:#fff;
  padding:56px 0 58px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 6% 18%,rgba(255,255,255,.55) 50%,transparent 51%),
    radial-gradient(1px 1px at 14% 74%,rgba(255,255,255,.35) 50%,transparent 51%),
    radial-gradient(1px 1px at 23% 34%,rgba(255,255,255,.45) 50%,transparent 51%),
    radial-gradient(1px 1px at 31% 88%,rgba(255,255,255,.3) 50%,transparent 51%),
    radial-gradient(1px 1px at 42% 12%,rgba(255,255,255,.5) 50%,transparent 51%),
    radial-gradient(1px 1px at 49% 62%,rgba(255,255,255,.28) 50%,transparent 51%),
    radial-gradient(1px 1px at 58% 26%,rgba(255,255,255,.42) 50%,transparent 51%),
    radial-gradient(1px 1px at 66% 78%,rgba(255,255,255,.34) 50%,transparent 51%),
    radial-gradient(1px 1px at 74% 44%,rgba(255,255,255,.5) 50%,transparent 51%),
    radial-gradient(1px 1px at 82% 16%,rgba(255,255,255,.3) 50%,transparent 51%),
    radial-gradient(1px 1px at 88% 68%,rgba(255,255,255,.45) 50%,transparent 51%),
    radial-gradient(1px 1px at 95% 32%,rgba(255,255,255,.36) 50%,transparent 51%);
  opacity:.85;
}
.article-hero::after{
  content:"";position:absolute;left:-10%;right:-10%;top:40%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.14),transparent);
  transform:rotate(-6deg);pointer-events:none;
}
.article-hero .container{position:relative;z-index:1;}
.breadcrumb{
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:rgba(255,255,255,.55);
  margin-bottom:26px;white-space:nowrap;overflow-x:auto;
  scrollbar-width:none;
}
.breadcrumb::-webkit-scrollbar{display:none;}
.breadcrumb a{color:rgba(255,255,255,.58);transition:color .2s ease-out;}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:5px;text-decoration-color:var(--gold);}
.breadcrumb .sep{color:rgba(255,255,255,.28);}
.breadcrumb .crumb-current{color:rgba(255,255,255,.85);max-width:440px;overflow:hidden;text-overflow:ellipsis;}
.article-title{
  font-size:clamp(28px,3.4vw,42px);line-height:1.32;font-weight:700;
  letter-spacing:-.01em;color:#fff;max-width:840px;margin:16px 0 0;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  margin-top:28px;padding-top:20px;max-width:840px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.62);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.35);}

/* ---------- 正文布局 ---------- */
.article-main{padding:64px 0 72px;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 240px;
  gap:64px;justify-content:center;align-items:start;
}
.article-paper{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:48px 52px;
}
.article-body{font-size:17px;line-height:1.95;color:var(--text-soft);}
.article-body p{margin:0 0 1.4em;}
.article-body h2{
  position:relative;font-size:clamp(22px,2.2vw,27px);font-weight:700;
  color:var(--ink);line-height:1.4;letter-spacing:-.01em;
  margin:2.2em 0 .8em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.3em;width:3px;height:1em;background:var(--gold);border-radius:2px;
}
.article-body h3{font-size:20px;font-weight:600;color:var(--ink);margin:1.7em 0 .6em;line-height:1.5;}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.3em;line-height:1.9;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.5em;}
.article-body li::marker{color:var(--gold);}
.article-body strong{color:var(--ink);font-weight:600;}
.article-body a{
  color:var(--ink);text-decoration:underline;text-underline-offset:3px;
  text-decoration-color:var(--gold);text-decoration-thickness:1px;
  transition:color .2s ease-out;
}
.article-body a:hover{color:#4A4270;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;
  background:#FCFBF7;border-left:3px solid var(--aurora);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:#3A3651;font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius);margin:1.6em auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  font-size:13px;color:var(--muted);text-align:center;margin-top:10px;line-height:1.7;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  border:1px solid var(--line);
}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top;
}
.article-body th{background:#F1EDE3;font-weight:600;color:var(--ink);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

.empty-state{
  border:1px dashed #DCD6C8;border-radius:var(--radius);
  padding:56px 32px;text-align:center;background:#FCFBF7;
}
.empty-title{font-size:20px;font-weight:600;color:var(--ink);margin-bottom:10px;}
.empty-desc{font-size:15px;color:var(--muted);margin-bottom:26px;line-height:1.85;}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:104px;display:grid;gap:20px;}
.side-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;
}
.side-title{
  font-size:14px;font-weight:600;color:var(--ink);
  letter-spacing:.02em;margin-bottom:14px;
}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;border-bottom:1px solid var(--line);
  font-size:14px;color:#3A3651;transition:color .2s ease-out;
}
.side-list a:last-child{border-bottom:0;padding-bottom:0;}
.side-list a:first-child{padding-top:0;}
.side-list a:hover{color:var(--ink);}
.side-list .arrow{color:var(--gold);transition:transform .2s ease-out;}
.side-list a:hover .arrow{transform:translateX(3px);}
.side-note{
  background:#FCF8EE;border:1px solid #EFE4CB;border-radius:var(--radius);
  padding:20px 22px;font-size:13px;line-height:1.9;color:#6A5B3A;
}
.side-note b{display:block;color:var(--ink);font-size:14px;margin-bottom:6px;}

/* ---------- 继续了解 ---------- */
.section{padding:72px 0;}
.section-alt{background:#FBF9F4;border-top:1px solid var(--line);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:36px;
}
.section-title{
  font-size:clamp(24px,2.6vw,32px);font-weight:700;
  letter-spacing:-.01em;color:var(--ink);line-height:1.35;
}
.section-sub{font-size:15px;color:var(--muted);margin-top:10px;max-width:620px;line-height:1.85;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.related-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover);}
.related-thumb{aspect-ratio:16/10;overflow:hidden;background:#EFEBE1;}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.related-card:hover .related-thumb img{transform:scale(1.03);}
.related-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;}
.related-body h3{font-size:18px;font-weight:600;color:var(--ink);line-height:1.5;margin-bottom:8px;}
.related-body p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:16px;flex:1;}

/* ---------- CTA 条 ---------- */
.cta-wrap{padding:0 0 76px;}
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:linear-gradient(120deg,#1C1735 0%,#120F24 100%);
  color:#fff;border-radius:var(--radius);padding:36px 40px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 10% 30%,rgba(255,255,255,.45) 50%,transparent 51%),
    radial-gradient(1px 1px at 26% 76%,rgba(255,255,255,.3) 50%,transparent 51%),
    radial-gradient(1px 1px at 44% 22%,rgba(255,255,255,.4) 50%,transparent 51%),
    radial-gradient(1px 1px at 63% 66%,rgba(255,255,255,.28) 50%,transparent 51%),
    radial-gradient(1px 1px at 79% 28%,rgba(255,255,255,.42) 50%,transparent 51%),
    radial-gradient(1px 1px at 92% 72%,rgba(255,255,255,.32) 50%,transparent 51%);
}
.cta-text{position:relative;z-index:1;}
.cta-kicker{
  font-size:12px;letter-spacing:.16em;color:var(--gold);
  margin-bottom:10px;font-weight:600;
}
.cta-title{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.45;letter-spacing:-.01em;}
.cta-desc{font-size:14px;color:var(--muted-light);margin-top:10px;max-width:560px;line-height:1.8;}
.cta-band .btn{position:relative;z-index:1;flex:none;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:#3F3568;}
.faq-item summary::after{
  content:"+";flex:none;font-size:20px;font-weight:400;line-height:1.2;
  color:var(--muted);transition:color .18s ease-out,transform .18s ease-out;
}
.faq-item[open] summary::after{content:"−";color:var(--gold);}
.faq-answer{
  padding:0 0 24px;font-size:15px;line-height:1.9;color:var(--muted);max-width:720px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  background:var(--night);color:#fff;padding-top:72px;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 8% 22%,rgba(255,255,255,.35) 50%,transparent 51%),
    radial-gradient(1px 1px at 19% 68%,rgba(255,255,255,.24) 50%,transparent 51%),
    radial-gradient(1px 1px at 33% 38%,rgba(255,255,255,.3) 50%,transparent 51%),
    radial-gradient(1px 1px at 47% 80%,rgba(255,255,255,.2) 50%,transparent 51%),
    radial-gradient(1px 1px at 61% 30%,rgba(255,255,255,.32) 50%,transparent 51%),
    radial-gradient(1px 1px at 73% 74%,rgba(255,255,255,.22) 50%,transparent 51%),
    radial-gradient(1px 1px at 86% 42%,rgba(255,255,255,.3) 50%,transparent 51%),
    radial-gradient(1px 1px at 94% 86%,rgba(255,255,255,.2) 50%,transparent 51%);
}
.site-footer .container{position:relative;z-index:1;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:56px;
}
.footer-col{position:relative;}
.footer-brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:16px;font-weight:700;color:#fff;letter-spacing:-.01em;
}
.footer-desc{font-size:14px;line-height:1.9;color:var(--muted-light);margin:16px 0 18px;max-width:300px;}
.footer-contact{font-size:13px;line-height:2;color:rgba(255,255,255,.58);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-links{display:grid;gap:12px;}
.footer-links a{
  font-size:14px;color:var(--muted-light);
  transition:color .2s ease-out;
}
.footer-links a:hover{
  color:#fff;text-decoration:underline;text-underline-offset:6px;
  text-decoration-color:var(--gold);
}
.subscribe{display:flex;gap:8px;}
.subscribe input{
  flex:1;min-width:0;height:44px;padding:0 14px;
  border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);color:#fff;font-size:14px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.subscribe input::placeholder{color:rgba(255,255,255,.45);}
.subscribe input:focus{
  outline:none;border-color:var(--aurora);
  box-shadow:0 0 0 3px rgba(119,217,196,.22);
}
.subscribe button{
  flex:none;width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid var(--gold);background:var(--gold);color:var(--ink);
  font-size:16px;cursor:pointer;transition:background-color .2s ease-out;
}
.subscribe button:hover{background:var(--gold-soft);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .article-side{position:static;display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:1024px){
  .container{padding:0 28px;}
  .article-paper{padding:36px 30px;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 30px;}
}
@media (max-width:900px){
  .nav-links,.nav-cta{display:none;}
  .menu-btn{display:flex;}
  .nav{height:68px;}
  .article-hero{padding:40px 0 44px;}
  .article-main{padding:48px 0 56px;}
  .section{padding:56px 0;}
  .cta-wrap{padding-bottom:56px;}
}
@media (max-width:768px){
  .related-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{padding-left:14px;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .brand{font-size:15px;}
  .article-hero{padding:32px 0 36px;}
  .article-title{font-size:clamp(24px,6.6vw,30px);}
  .article-paper{padding:26px 20px;border-radius:12px;}
  .article-meta{font-size:12px;gap:8px;}
  .breadcrumb{font-size:12px;gap:8px;}
  .breadcrumb .crumb-current{max-width:180px;}
  .btn{width:100%;height:46px;}
  .cta-band{padding:28px 22px;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px;}
  .site-footer{padding-top:52px;}
  .faq-item summary{font-size:16px;padding:18px 0;}
  .empty-state{padding:40px 20px;}
}

/* roulang page: category2 */
:root{
  --ink:#1C1735;
  --night:#120F24;
  --gold:#E0B15C;
  --gold-bright:#EDC576;
  --aurora:#77D9C4;
  --paper:#F7F5F0;
  --card:#FFFFFF;
  --line:#E6E1D6;
  --line-dash:#DCD6C8;
  --text:#171528;
  --muted:#5E5A72;
  --ink-soft:#3A3651;
  --on-dark:rgba(255,255,255,.68);
  --on-dark-soft:rgba(255,255,255,.5);
  --r-card:14px;
  --r-btn:8px;
  --shadow-hover:0 18px 40px -24px rgba(23,18,53,.35);
  --font-stack:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;padding:0;font-family:var(--font-stack);font-size:16px;line-height:1.85;color:var(--text);background:var(--paper);-webkit-font-smoothing:antialiased;text-align:left;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{list-style:none;padding:0;}
b,strong{font-weight:600;}
::selection{background:var(--gold);color:var(--ink);}
:focus-visible{outline:2px solid var(--aurora);outline-offset:3px;}
section[id]{scroll-margin-top:100px;}

main .container,.site-header .container,.site-footer .container{
  width:100%;max-width:1180px;margin-left:auto;margin-right:auto;
  padding-left:40px;padding-right:40px;
}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.96);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:32px;height:76px;}
.brand{display:inline-flex;align-items:center;gap:8px;font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--ink);}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--aurora);display:inline-block;flex:none;}
.nav-links{display:flex;align-items:center;gap:36px;}
.nav-link{position:relative;font-size:15px;color:var(--ink-soft);padding:6px 0;transition:color .2s ease-out;}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;height:2px;width:60%;
  background:var(--gold);transform:translateX(-50%) scaleX(0);transform-origin:center;
  transition:transform .2s ease-out;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--ink);}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:translateX(-50%) scaleX(1);}
.nav-link.active{color:var(--ink);font-weight:600;}
.nav-link.active::after{transform:translateX(-50%) scaleX(1);}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 22px;
  border:1px solid var(--ink);border-radius:var(--r-btn);font-size:14px;font-weight:600;
  color:var(--ink);background:transparent;white-space:nowrap;
  transition:background .2s ease-out,color .2s ease-out,transform .2s ease-out;
}
.nav-cta:hover{background:var(--ink);color:var(--paper);}
.nav-cta:active{transform:translateY(1px);}
.menu-btn{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:transparent;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.menu-btn span{display:block;width:16px;height:1.5px;background:var(--ink);transition:transform .2s ease-out;}
.menu-btn[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg);}
.menu-btn[aria-expanded="true"] span:last-child{transform:translateY(-3px) rotate(-45deg);}

.mobile-panel{
  position:fixed;inset:0;z-index:90;background:var(--paper);display:none;
  flex-direction:column;padding:20px 20px 40px;overflow-y:auto;
}
.mobile-panel.open{display:flex;}
.mobile-panel-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);}
.mobile-close{border:none;background:transparent;font-size:14px;color:var(--muted);padding:8px 4px;}
.mobile-close:hover{color:var(--ink);}
.mobile-links{margin-top:8px;}
.mobile-links a{display:block;padding:18px 0;font-size:17px;font-weight:500;color:var(--ink);border-bottom:1px solid var(--line);}
.mobile-links a.active::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--aurora);margin-right:10px;vertical-align:middle;}
.mobile-panel .nav-cta{display:inline-flex;margin-top:26px;height:46px;}
body.no-scroll{overflow:hidden;}

/* ============ PAGE HERO ============ */
.page-hero{padding-top:72px;}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.16em;color:var(--muted);}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--gold);display:inline-block;}
.page-title{
  margin-top:22px;max-width:900px;color:var(--ink);font-weight:700;
  font-size:clamp(30px,4vw,52px);line-height:1.22;letter-spacing:-.01em;
}
.page-lead{margin-top:20px;max-width:640px;font-size:17px;line-height:1.85;color:var(--muted);}
.page-hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:30px;font-size:14px;color:var(--muted);}
.page-hero-meta .sep{width:4px;height:4px;border-radius:50%;background:var(--gold);display:inline-block;}
.page-hero .rule{margin-top:40px;border-top:1px solid var(--line);}

/* ============ TRUST BAR ============ */
.trust-bar{padding-top:40px;}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.trust-item{padding:26px 24px;border-left:1px solid var(--line);}
.trust-item:first-child{border-left:none;padding-left:0;}
.trust-item .num{font-size:26px;font-weight:700;color:var(--ink);letter-spacing:-.01em;font-variant-numeric:tabular-nums;line-height:1.4;}
.trust-item .num em{font-style:normal;color:var(--gold);}
.trust-item .cap{margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--muted);}

/* ============ SPLIT SECTIONS ============ */
.split{padding-top:76px;}
.split:first-of-type{padding-top:84px;}
.split-row{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
  padding-top:76px;border-top:1px solid var(--line);
}
.split-row.reverse .split-media{order:2;}
.split-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--card);
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease-out;}
.split-media:hover img{transform:scale(1.02);}
.sec-index{font-size:13px;letter-spacing:.16em;font-weight:600;color:var(--gold);font-variant-numeric:tabular-nums;}
.split-body h2{margin-top:14px;font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.split-body p{margin-top:16px;font-size:15.5px;line-height:1.9;color:var(--muted);}
.text-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:24px;
  font-size:14.5px;font-weight:600;color:var(--ink);padding-bottom:3px;
  border-bottom:1px solid var(--line-dash);transition:border-color .2s ease-out,color .2s ease-out;
}
.text-link span{color:var(--gold);transition:transform .2s ease-out;}
.text-link:hover{border-bottom-color:var(--gold);color:var(--ink);}
.text-link:hover span{transform:translateX(4px);}

/* ============ CHECKLIST ============ */
.checklist{padding-top:96px;}
.section-head{max-width:660px;}
.section-head h2{font-size:clamp(23px,2.6vw,32px);line-height:1.32;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.section-head p{margin-top:14px;font-size:15.5px;line-height:1.9;color:var(--muted);}
.checklist-list{margin-top:40px;border-top:1px solid var(--line);}
.checklist-list li{display:grid;grid-template-columns:64px 1fr;gap:24px;padding:26px 0;border-bottom:1px solid var(--line);align-items:start;}
.checklist-list .num{font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--gold);padding-top:5px;font-variant-numeric:tabular-nums;}
.checklist-list h3{font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;}
.checklist-list p{margin-top:6px;font-size:14.5px;line-height:1.85;color:var(--muted);max-width:760px;}

/* ============ FAQ ============ */
.faq{padding-top:96px;}
.faq-list{margin-top:36px;max-width:840px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{position:relative;width:14px;height:14px;flex:none;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);transition:transform .2s ease-out;}
.faq-icon::before{left:0;top:6px;width:14px;height:1.5px;}
.faq-icon::after{left:6px;top:0;width:1.5px;height:14px;}
.faq-item[open] .faq-icon::after{transform:scaleY(0);}
.faq-answer{padding-bottom:24px;max-width:730px;font-size:15px;line-height:1.9;color:var(--muted);}

/* ============ CTA BAND ============ */
.cta-band{margin-top:96px;background:var(--ink);position:relative;overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 12% 24%, rgba(255,255,255,.40) 0, rgba(255,255,255,.40) 1px, transparent 1px),
    radial-gradient(circle at 34% 68%, rgba(255,255,255,.22) 0, rgba(255,255,255,.22) 1px, transparent 1px),
    radial-gradient(circle at 58% 18%, rgba(255,255,255,.30) 0, rgba(255,255,255,.30) 1px, transparent 1px),
    radial-gradient(circle at 77% 52%, rgba(255,255,255,.20) 0, rgba(255,255,255,.20) 1px, transparent 1px),
    radial-gradient(circle at 90% 82%, rgba(224,177,92,.40) 0, rgba(224,177,92,.40) 1px, transparent 1px),
    radial-gradient(circle at 46% 90%, rgba(255,255,255,.18) 0, rgba(255,255,255,.18) 1px, transparent 1px);
  opacity:.9;
}
.cta-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  gap:40px;padding-top:64px;padding-bottom:64px;
}
.cta-inner h2{font-size:clamp(21px,2.2vw,28px);font-weight:700;color:#fff;letter-spacing:-.01em;line-height:1.4;}
.cta-inner p{margin-top:12px;max-width:540px;font-size:15px;line-height:1.85;color:var(--on-dark);}
.btn-gold{
  display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 28px;
  border-radius:var(--r-btn);background:var(--gold);color:var(--ink);
  font-size:15px;font-weight:600;white-space:nowrap;flex:none;
  transition:filter .2s ease-out,transform .2s ease-out;
}
.btn-gold:hover{filter:brightness(1.06);transform:translateY(-1px);}
.btn-gold:active{transform:translateY(1px);}

/* ============ BACK HOME ============ */
.back-home{padding:40px 0 80px;}
.back-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:var(--muted);
  padding-bottom:3px;border-bottom:1px solid var(--line-dash);
  transition:color .2s ease-out,border-color .2s ease-out;
}
.back-link:hover{color:var(--ink);border-bottom-color:var(--gold);}

/* ============ FOOTER ============ */
.site-footer{background:var(--ink);position:relative;overflow:hidden;padding-top:72px;}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 8% 16%, rgba(255,255,255,.26) 0, rgba(255,255,255,.26) 1px, transparent 1px),
    radial-gradient(circle at 26% 62%, rgba(255,255,255,.16) 0, rgba(255,255,255,.16) 1px, transparent 1px),
    radial-gradient(circle at 52% 28%, rgba(255,255,255,.22) 0, rgba(255,255,255,.22) 1px, transparent 1px),
    radial-gradient(circle at 71% 74%, rgba(224,177,92,.30) 0, rgba(224,177,92,.30) 1px, transparent 1px),
    radial-gradient(circle at 88% 40%, rgba(255,255,255,.18) 0, rgba(255,255,255,.18) 1px, transparent 1px),
    radial-gradient(circle at 40% 88%, rgba(255,255,255,.14) 0, rgba(255,255,255,.14) 1px, transparent 1px);
}
.footer-grid{
  position:relative;display:grid;grid-template-columns:1.4fr .8fr .8fr 1.2fr;
  gap:48px;padding-bottom:56px;
}
.footer-brand{display:inline-flex;align-items:center;gap:8px;font-size:17px;font-weight:700;color:#fff;letter-spacing:-.01em;}
.footer-desc{margin-top:16px;max-width:300px;font-size:14px;line-height:1.9;color:var(--on-dark);}
.footer-contact{margin-top:20px;font-size:13.5px;line-height:2;color:var(--on-dark);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-title{font-size:13px;letter-spacing:.14em;color:var(--on-dark-soft);margin-bottom:18px;}
.footer-links li{margin-bottom:12px;}
.footer-links a{font-size:15px;color:var(--on-dark);transition:color .2s ease-out;}
.footer-links a:hover,.footer-links a:focus-visible{color:#fff;text-decoration:underline;text-decoration-color:var(--gold);text-underline-offset:6px;}
.subscribe{display:flex;max-width:290px;}
.subscribe input{
  flex:1;min-width:0;height:46px;padding:0 14px;
  border:1px solid rgba(255,255,255,.18);border-right:none;border-radius:8px 0 0 8px;
  background:rgba(255,255,255,.04);color:#fff;font-size:14px;font-family:inherit;
}
.subscribe input::placeholder{color:rgba(255,255,255,.42);}
.subscribe input:focus{outline:none;border-color:var(--aurora);box-shadow:0 0 0 3px rgba(119,217,196,.22);}
.subscribe button{
  width:52px;flex:none;height:46px;border:1px solid var(--gold);background:var(--gold);
  color:var(--ink);border-radius:0 8px 8px 0;font-size:16px;line-height:1;
  transition:filter .2s ease-out;
}
.subscribe button:hover{filter:brightness(1.06);}
.footer-bottom{
  position:relative;display:flex;flex-wrap:wrap;justify-content:space-between;gap:20px;
  border-top:1px solid rgba(255,255,255,.12);padding-top:24px;padding-bottom:32px;
  font-size:13px;color:var(--on-dark-soft);
}

/* ============ RESPONSIVE ============ */
@media (max-width:1024px){
  main .container,.site-header .container,.site-footer .container{padding-left:28px;padding-right:28px;}
  .nav-links{gap:24px;}
  .split-row{gap:40px;}
  .footer-grid{grid-template-columns:1.2fr 1fr;gap:40px;}
  .trust-item .num{font-size:23px;}
}
@media (max-width:900px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .menu-btn{display:flex;}
  .mobile-panel .nav-cta{display:inline-flex;}
  .page-hero{padding-top:52px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:26px;padding-top:52px;padding-bottom:52px;}
}
@media (max-width:860px){
  .split-row{grid-template-columns:1fr;gap:28px;padding-top:52px;}
  .split-row.reverse .split-media{order:0;}
  .split-media img{aspect-ratio:16/10;}
  .split{padding-top:56px;}
  .split:first-of-type{padding-top:56px;}
  .trust-grid{grid-template-columns:1fr 1fr;}
  .trust-item{padding:22px 18px;border-left:1px solid var(--line);}
  .trust-item:nth-child(odd){border-left:none;padding-left:0;}
  .trust-item:nth-child(n+3){border-top:1px solid var(--line);}
  .checklist{padding-top:64px;}
  .faq{padding-top:64px;}
  .cta-band{margin-top:64px;}
  .back-home{padding:32px 0 56px;}
}
@media (max-width:640px){
  main .container,.site-header .container,.site-footer .container{padding-left:20px;padding-right:20px;}
  .nav{height:64px;}
  .brand{font-size:15.5px;}
  .page-title{font-size:clamp(26px,7.4vw,32px);}
  .page-lead{font-size:15.5px;}
  .page-hero-meta{font-size:13px;gap:10px;}
  .trust-item .num{font-size:20px;}
  .trust-item .cap{font-size:12.5px;}
  .split-row{gap:22px;}
  .split-body h2{font-size:21px;}
  .split-body p{font-size:15px;}
  .checklist-list li{grid-template-columns:40px 1fr;gap:14px;padding:22px 0;}
  .checklist-list h3{font-size:16px;}
  .checklist-list p{font-size:14px;}
  .faq-item summary{font-size:16px;padding:18px 0;}
  .faq-answer{font-size:14.5px;padding-bottom:20px;}
  .cta-inner{padding-top:44px;padding-bottom:44px;}
  .btn-gold{width:100%;height:46px;}
  .footer-grid{grid-template-columns:1fr;gap:34px;padding-bottom:40px;}
  .footer-bottom{flex-direction:column;gap:8px;font-size:12.5px;}
  .subscribe{max-width:100%;}
}