/* roulang page: index */
:root{
  --ink:#0C1015;
  --ink-2:#171E29;
  --paper:#F6F5F1;
  --paper-2:#ECEAE3;
  --brand:#1FB6A6;
  --brand-deep:#0E7C72;
  --accent:#FF6A2B;
  --accent-dark:#E85C22;
  --muted:#6E6A62;
  --line:rgba(12,16,21,.10);
  --line-d:rgba(246,245,241,.14);
  --r-card:12px;
  --r-img:8px;
  --r-btn:8px;
  --shadow:0 18px 40px -20px rgba(12,16,21,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.mono{font-family:ui-monospace,"SFMono-Regular","Menlo",monospace;font-variant-numeric:tabular-nums}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
.section{padding:112px 0}
.section--tight{padding:80px 0}
.section--paper2{background:var(--paper-2)}
.section--ink{background:var(--ink);color:var(--paper)}
.divide-top{border-top:1px solid var(--line)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 28px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-primary{background:var(--accent);color:var(--ink)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--paper);border-color:rgba(246,245,241,.42)}
.btn-ghost:hover{border-color:var(--paper);background:rgba(246,245,241,.06)}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--ink)}
.btn-sm{height:44px;padding:0 20px;font-size:15px}
.btn-block{width:100%}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:15px;font-weight:600;
  border-bottom:1px solid var(--brand);padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease;
}
.btn-link:hover{color:var(--accent);border-bottom-width:2px;border-color:var(--accent)}
.btn-link:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.12em;font-weight:600;
  background:var(--paper-2);color:var(--ink);
}
.badge--accent{background:var(--accent);color:var(--ink)}
.badge--dark{background:var(--ink);color:var(--paper)}
.badge--brand{background:rgba(31,182,166,.14);color:var(--brand-deep)}
.badge--ghost{background:rgba(246,245,241,.10);color:var(--paper);border:1px solid var(--line-d)}

/* ---------- 标题层级 ---------- */
.h1{font-size:clamp(34px,5.2vw,64px);font-weight:800;line-height:1.12;letter-spacing:-.02em}
.h2{font-size:clamp(26px,3vw,40px);font-weight:700;line-height:1.2;letter-spacing:-.01em}
.h3{font-size:22px;font-weight:600;line-height:1.4}
.lead{font-size:18px;line-height:1.8;color:var(--muted)}
.on-dark .lead,.section--ink .lead{color:rgba(246,245,241,.68)}
.muted{color:var(--muted)}
.small{font-size:13px;line-height:1.6}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px}
.section-head p{margin-top:12px;max-width:620px}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  transition:background-color .24s ease,border-color .24s ease,box-shadow .24s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{background:var(--paper);border-bottom-color:var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:.01em;color:var(--paper)}
.logo small{display:block;font-size:11px;font-weight:500;letter-spacing:.16em;opacity:.72;line-height:1.2}
.logo-mark{width:26px;height:26px;flex:0 0 26px}
.site-header.scrolled .logo{color:var(--ink)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:rgba(246,245,241,.84);transition:color .2s ease}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-8px;height:2px;width:20px;
  background:var(--brand);opacity:0;transition:opacity .2s ease;
}
.nav-link:hover{color:var(--paper)}
.nav-link:hover::after,.nav-link.active::after{opacity:1}
.nav-link.active{color:var(--paper)}
.site-header.scrolled .nav-link{color:rgba(12,16,21,.72)}
.site-header.scrolled .nav-link:hover,.site-header.scrolled .nav-link.active{color:var(--ink)}
.nav-right{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid rgba(246,245,241,.36);
  display:inline-flex;align-items:center;justify-content:center;background:transparent;cursor:pointer;
  transition:border-color .2s ease,background-color .2s ease,color .2s ease;color:var(--paper);
}
.icon-btn:hover{border-color:var(--paper);background:rgba(246,245,241,.08)}
.icon-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.site-header.scrolled .icon-btn{color:var(--ink);border-color:var(--line)}
.site-header.scrolled .icon-btn:hover{border-color:var(--ink)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:999px;
  background:var(--accent);color:var(--ink);font-size:15px;font-weight:600;
  transition:background-color .2s ease,transform .2s ease;
}
.nav-cta:hover{background:var(--accent-dark);transform:translateY(-1px)}
.nav-cta:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.burger{
  display:none;width:44px;height:44px;border:1px solid rgba(246,245,241,.36);border-radius:10px;
  background:transparent;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:6px;
}
.burger span{display:block;width:20px;height:2px;background:var(--paper);transition:background-color .2s ease}
.site-header.scrolled .burger{border-color:var(--line)}
.site-header.scrolled .burger span{background:var(--ink)}
.burger:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(12,16,21,.5);opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;z-index:90;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:var(--paper);z-index:100;
  transform:translateX(100%);transition:transform .28s cubic-bezier(.22,.61,.36,1);
  display:flex;flex-direction:column;padding:20px 0;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 20px 16px;border-bottom:1px solid var(--line)}
.drawer-head strong{font-size:16px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:transparent;cursor:pointer}
.drawer-close:hover{border-color:var(--ink)}
.drawer-nav{padding:8px 0;flex:1;overflow-y:auto}
.drawer-nav a{
  display:flex;align-items:center;height:48px;padding:0 20px;font-size:16px;
  border-bottom:1px solid var(--line);transition:background-color .2s ease,color .2s ease;
}
.drawer-nav a:hover{background:var(--paper-2)}
.drawer-nav a.active{box-shadow:inset 3px 0 0 var(--brand);font-weight:600}
.drawer-foot{padding:16px 20px 4px;border-top:1px solid var(--line)}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:88vh;display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;background-repeat:no-repeat;
  color:var(--paper);overflow:hidden;padding:132px 0 72px;
}
.hero::before{content:"";position:absolute;inset:0;background:var(--ink);opacity:.72}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(246,245,241,.55) 1px,transparent 1px);
  background-size:64px 64px;opacity:.12;animation:drift 30s linear infinite;
}
@keyframes drift{
  0%{background-position:0 0}
  100%{background-position:64px 128px}
}
.hero-inner{position:relative;z-index:2;max-width:760px}
.hero h1{color:var(--paper)}
.hero-sub{margin-top:24px;font-size:18px;line-height:1.8;color:rgba(246,245,241,.78);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:40px}
.hero-facts{
  position:relative;z-index:2;display:flex;gap:0;margin-top:64px;padding-top:24px;
  border-top:1px solid var(--line-d);flex-wrap:wrap;
}
.hero-fact{padding-right:32px;margin-right:32px;border-right:1px solid var(--line-d)}
.hero-fact:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-fact b{display:block;font-size:20px;font-weight:700}
.hero-fact span{font-size:13px;color:rgba(246,245,241,.62)}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin-top:8px}
.timeline::before{content:"";position:absolute;left:112px;top:8px;bottom:8px;width:1px;background:var(--line)}
.tl-item{display:grid;grid-template-columns:96px 1fr;gap:40px;padding:20px 0;position:relative}
.tl-time{font-size:14px;color:var(--muted);text-align:right;padding-top:4px}
.tl-body{position:relative;padding-left:32px;max-width:640px}
.tl-dot{
  position:absolute;left:-27px;top:9px;width:10px;height:10px;border-radius:50%;
  border:2px solid var(--brand);background:var(--paper);
}
.tl-dot--now{background:var(--accent);border-color:var(--accent);animation:pulse 2.4s infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(255,106,43,.42)}
  70%{box-shadow:0 0 0 12px rgba(255,106,43,0)}
  100%{box-shadow:0 0 0 0 rgba(255,106,43,0)}
}
.tl-body h3{margin-bottom:4px}
.tl-meta{font-size:13px;color:var(--muted);margin-bottom:8px}
.tl-note{font-size:15px;color:var(--muted);margin-bottom:10px}

/* ---------- 横向卡带 ---------- */
.reel{
  display:flex;gap:24px;overflow-x:auto;padding:8px 4px 24px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
}
.reel::-webkit-scrollbar{display:none}
.reel-card{
  flex:0 0 280px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease;
}
.reel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.reel-card figure{margin:0;aspect-ratio:4/5;overflow:hidden;border-radius:0}
.reel-card img{width:100%;height:100%;object-fit:cover;border-radius:0}
.reel-body{padding:20px}
.reel-body h3{font-size:18px;font-weight:600}
.reel-body .role{font-size:13px;color:var(--muted);margin-top:4px}
.reel-body p{font-size:14px;color:var(--muted);margin-top:10px;line-height:1.7}

/* 非对称亮点栅格 */
.hl-grid{display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:24px;margin-top:40px}
.hl-card{
  border:1px solid var(--line);border-radius:var(--r-card);background:#fff;padding:32px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.hl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(31,182,166,.4)}
.hl-card--big{grid-row:span 2;display:flex;flex-direction:column;justify-content:space-between;background:var(--ink);color:var(--paper);border-color:var(--ink)}
.hl-card--big .hl-icon{border-color:var(--line-d)}
.hl-card--big p{color:rgba(246,245,241,.68)}
.hl-icon{
  width:48px;height:48px;border-radius:12px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand);margin-bottom:20px;
}
.hl-card h3{margin-bottom:10px}
.hl-card p{font-size:15px;color:var(--muted);line-height:1.75}

/* ---------- 票种对比 ---------- */
.tiers{display:grid;grid-template-columns:200px repeat(3,1fr);gap:0;margin-top:16px;align-items:start}
.tier-col{border:1px solid var(--line);border-radius:var(--r-card);background:#fff;overflow:hidden;padding:0}
.tier-col + .tier-col{margin-left:16px}
.tier-col--labels{background:transparent;border-color:transparent;padding:0}
.tier-col-head{
  height:132px;padding:24px;border-bottom:1px solid var(--line);
  display:flex;flex-direction:column;justify-content:center;gap:6px;
}
.tier-col-head h3{font-size:18px;font-weight:600}
.tier-price{font-size:36px;font-weight:700;line-height:1.1}
.tier-price i{font-size:18px;font-style:normal;font-weight:600;margin-right:2px}
.tier-price em{font-size:14px;font-style:normal;font-weight:400;color:var(--muted)}
.tier-feats{padding:12px 24px}
.tier-feats li{display:flex;align-items:center;gap:10px;height:48px;font-size:15px}
.tier-feats svg{flex:0 0 16px;color:var(--brand)}
.tier-col-foot{padding:16px 24px 28px}
.tier-label{
  height:48px;display:flex;align-items:center;font-size:13px;color:var(--muted);
  border-bottom:1px solid var(--line);
}
.tier-label:last-child{border-bottom:0}
.tier-labels-head{height:132px;display:flex;align-items:flex-end;padding-bottom:24px;border-bottom:1px solid var(--line)}
.tier-col--pick{
  background:var(--ink);color:var(--paper);border-color:var(--brand);
  transform:translateY(-12px);box-shadow:var(--shadow);
}
.tier-col--pick .tier-col-head{border-bottom-color:var(--line-d)}
.tier-col--pick .tier-feats{color:rgba(246,245,241,.86)}
.tier-col--pick .tier-price em{color:rgba(246,245,241,.6)}
.tier-col--pick .tier-col-foot{border-top:1px solid var(--line-d)}
.tier-pick-badge{position:absolute;top:16px;right:16px}
.tier-col--pick .tier-col-head{position:relative}

/* ---------- 报名 CTA 表单 ---------- */
.cta-band{
  background:var(--ink);color:var(--paper);position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-80px;width:420px;height:420px;
  background-image:radial-gradient(rgba(246,245,241,.6) 1px,transparent 1px);
  background-size:32px 32px;opacity:.08;pointer-events:none;
}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:start;position:relative;z-index:2}
.cta-points{display:flex;flex-wrap:wrap;gap:20px;margin-top:28px}
.cta-points li{display:flex;align-items:center;gap:8px;font-size:15px;color:rgba(246,245,241,.82)}
.cta-points svg{color:var(--brand)}
.form-card{background:var(--paper);color:var(--ink);border-radius:var(--r-card);padding:32px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
.field input,.field select{
  width:100%;height:48px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:#fff;padding:0 14px;font-size:15px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input:focus,.field select:focus{
  border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,106,43,.12);
}
.field input::placeholder{color:#A9A49B}
.form-hint{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.7}
.form-hint.is-error{color:var(--accent)}
.form-hint.is-ok{color:var(--brand-deep);display:flex;align-items:center;gap:6px}

/* ---------- 内容列表（CMS） ---------- */
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px}
.news-card{
  border:1px solid var(--line);border-radius:var(--r-card);background:#fff;overflow:hidden;
  display:flex;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(31,182,166,.35)}
.news-card--lead{grid-row:span 2;flex-direction:column}
.news-card--lead figure{margin:0;aspect-ratio:16/9;overflow:hidden;border-radius:0}
.news-card--lead img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease}
.news-card--lead:hover img{transform:scale(1.03)}
.news-card--side{min-height:172px}
.news-card--side figure{margin:0;width:150px;flex:0 0 150px;overflow:hidden;border-radius:0}
.news-card--side img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease}
.news-card--side:hover img{transform:scale(1.03)}
.news-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-card--side .news-body{padding:20px}
.news-title{font-size:20px;font-weight:600;line-height:1.4;transition:color .2s ease}
.news-card--side .news-title{font-size:17px}
.news-card:hover .news-title{color:var(--brand)}
.news-excerpt{font-size:15px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted);margin-top:auto}
.news-meta .dot{width:1px;height:12px;background:var(--line)}
.empty-state{
  min-height:200px;border:1px dashed var(--line);border-radius:var(--r-card);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:40px;
}
.empty-state svg{color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;padding:18px 0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;line-height:1.5;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-deep)}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.faq-q .chev{flex:0 0 18px;transition:transform .24s ease;color:var(--muted)}
.faq-item.open .faq-q .chev{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-item.open .faq-a{max-height:320px}
.faq-a p{font-size:15px;color:var(--muted);line-height:1.8;padding:0 40px 24px 0}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--paper);position:relative;overflow:hidden}
.site-footer::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:320px;
  background-image:radial-gradient(rgba(246,245,241,.6) 1px,transparent 1px);
  background-size:40px 40px;opacity:.08;pointer-events:none;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding:80px 0 56px;border-bottom:1px solid var(--line-d);position:relative;z-index:2;
}
.footer-grid h4{font-size:14px;letter-spacing:.12em;color:rgba(246,245,241,.6);font-weight:600;margin-bottom:20px}
.footer-links li{margin-bottom:6px}
.footer-links a{display:inline-flex;align-items:center;min-height:32px;font-size:15px;color:rgba(246,245,241,.82);transition:color .2s ease}
.footer-links a:hover{color:var(--brand)}
.footer-links a:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.footer-brand p{font-size:14px;color:rgba(246,245,241,.62);margin-top:18px;max-width:320px;line-height:1.8}
.footer-contact li{font-size:15px;color:rgba(246,245,241,.82);margin-bottom:10px;display:flex;gap:8px;align-items:flex-start}
.footer-contact svg{flex:0 0 16px;margin-top:5px;color:var(--brand)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  padding:24px 0 40px;font-size:12px;color:rgba(246,245,241,.55);position:relative;z-index:2;
}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s cubic-bezier(.22,.61,.36,1),transform .4s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 28px}
  .section{padding:72px 0}
  .section--tight{padding:64px 0}
  .nav-links,.nav-right .icon-btn{display:none}
  .burger{display:flex}
  .hero{min-height:640px;padding:112px 0 56px}
  .timeline::before{left:8px}
  .tl-item{grid-template-columns:1fr;gap:8px;padding-left:32px}
  .tl-time{text-align:left;padding-top:0}
  .tl-body{padding-left:0}
  .tl-dot{left:-32px;top:6px}
  .hl-grid{grid-template-columns:1fr;grid-template-rows:none}
  .hl-card--big{grid-row:auto}
  .tiers{grid-template-columns:1fr;gap:20px}
  .tier-col + .tier-col{margin-left:0}
  .tier-col--labels{display:none}
  .tier-col--pick{transform:none}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .news-grid{grid-template-columns:1fr}
  .news-card--lead{grid-row:auto}
  .news-card--side figure{width:120px;flex:0 0 120px}
  .footer-grid{grid-template-columns:1fr 1fr;padding:64px 0 40px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  body{font-size:16px}
  .section{padding:56px 0}
  .section--tight{padding:56px 0}
  .hero{min-height:560px;padding:104px 0 48px}
  .hero-actions .btn{width:100%}
  .hero-facts{gap:20px 0}
  .hero-fact{flex:1 1 50%;border-right:0;margin-right:0;padding-right:16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px}
  .reel-card{flex:0 0 240px}
  .news-card{flex-direction:column}
  .news-card--side figure{width:100%;flex:0 0 auto;aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .form-card{padding:20px}
  .hl-card{padding:24px}
  .faq-a p{padding-right:0}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink:#0C1015;
  --ink-2:#171E29;
  --paper:#F6F5F1;
  --paper-2:#ECEAE3;
  --brand:#1FB6A6;
  --brand-deep:#0E7C72;
  --accent:#FF6A2B;
  --accent-deep:#E85C22;
  --muted:#6E6A62;
  --line:rgba(12,16,21,.10);
  --line-d:rgba(246,245,241,.14);
  --radius:12px;
  --radius-sm:8px;
  --shadow:0 18px 40px -20px rgba(12,16,21,.28);
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"SFMono-Regular","Menlo",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  letter-spacing:0;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
::selection{background:rgba(31,182,166,.25)}

.container{
  width:100%;
  max-width:1240px !important;
  margin:0 auto;
  padding-left:40px !important;
  padding-right:40px !important;
}
@media (max-width:1023px){.container{padding-left:28px !important;padding-right:28px !important}}
@media (max-width:639px){.container{padding-left:20px !important;padding-right:20px !important}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  color:var(--paper);
  background:transparent;
  transition:background .24s ease,color .24s ease,border-color .24s ease,box-shadow .24s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:var(--paper);
  color:var(--ink);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:10px;color:inherit;font-weight:800;font-size:16px;letter-spacing:-.01em;line-height:1.1;flex:none}
.logo-mark{width:26px;height:26px;flex:none}
.logo span{display:block}
.logo span small{display:block;font-size:11px;font-weight:500;letter-spacing:.12em;opacity:.62;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;display:inline-block;
  font-size:15px;font-weight:500;
  padding:6px 0;opacity:.86;
  transition:color .2s ease,opacity .2s ease;
}
.nav-link:hover,.nav-link:focus-visible{opacity:1;color:var(--brand)}
.nav-link.active{opacity:1}
.nav-link.active::after{
  content:"";position:absolute;left:0;bottom:0;width:20px;height:2px;background:var(--brand);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:12px;flex:none}
.icon-btn{
  width:40px;height:40px;border-radius:999px;
  border:1px solid currentColor;background:transparent;color:inherit;
  display:grid;place-items:center;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.icon-btn:hover{background:rgba(31,182,166,.14);color:var(--brand);transform:translateY(-2px)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:999px;
  background:var(--accent);color:#0C1015;font-size:14px;font-weight:600;
  transition:background .2s ease,transform .2s ease;
}
.nav-cta:hover{background:var(--accent-deep);transform:translateY(-1px)}
.nav-cta:active{transform:translateY(0)}
.burger{
  display:none;width:44px;height:44px;border:1px solid currentColor;border-radius:8px;
  background:transparent;flex-direction:column;align-items:center;justify-content:center;gap:6px;cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

@media (max-width:1023px){
  .nav-links,.icon-btn{display:none}
  .burger{display:flex}
  .nav-cta{height:38px;padding:0 16px;font-size:13px}
}

/* ---------- Drawer ---------- */
.overlay{
  position:fixed;inset:0;background:rgba(12,16,21,.5);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:95;
}
.overlay.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:100;
  width:min(320px,86vw);
  background:var(--paper);color:var(--ink);
  transform:translateX(102%);
  transition:transform .28s cubic-bezier(.22,.61,.36,1);
  display:flex;flex-direction:column;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:68px;padding:0 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:999px;background:transparent;cursor:pointer;font-size:18px;line-height:1}
.drawer-links{padding:8px 0;flex:1;overflow:auto}
.drawer-links a{display:flex;align-items:center;height:48px;padding:0 20px;font-size:15px;font-weight:500;border-bottom:1px solid var(--line)}
.drawer-links a:hover{color:var(--brand)}
.drawer-links a.active{box-shadow:inset 3px 0 0 var(--brand);color:var(--brand)}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  padding:0 28px;height:50px;font-size:15px;
}
.btn-primary{background:var(--accent);color:#0C1015}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-2px)}
.btn-ghost{border-color:var(--line);background:transparent;color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-2px)}
.btn-ghost-light{border-color:rgba(246,245,241,.4);background:transparent;color:var(--paper)}
.btn-ghost-light:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}

/* ---------- Article hero ---------- */
.art-hero{
  position:relative;
  background-image:linear-gradient(160deg,rgba(12,16,21,.82),rgba(12,16,21,.94)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  color:var(--paper);
  padding:132px 0 64px;
}
.art-hero::after{
  content:"";position:absolute;inset:0;opacity:.10;pointer-events:none;
  background-image:radial-gradient(rgba(246,245,241,.7) 1px,transparent 1px);
  background-size:26px 26px;
}
.art-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(246,245,241,.68)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:rgba(246,245,241,.36)}
.crumbs a:hover{color:var(--brand)}
.crumbs .current{max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:rgba(246,245,241,.86)}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.12em;font-weight:600;
}
.badge-brand{background:var(--brand-deep);color:#F6F5F1}
.art-hero h1{
  font-size:clamp(28px,4vw,48px);
  font-weight:800;line-height:1.18;letter-spacing:-.02em;
  max-width:900px;margin:20px 0 0;
}
.art-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:24px;font-family:var(--mono);font-size:13px;color:rgba(246,245,241,.7);
}
.art-meta span{display:inline-flex;align-items:center;gap:14px}
.art-meta span+span::before{content:"";width:1px;height:12px;background:var(--line-d);display:inline-block}

/* ---------- Article body ---------- */
.art-main{padding:72px 0 96px}
.art-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:56px;align-items:start}
.art-head{display:flex;align-items:center;gap:16px;margin-bottom:36px}
.art-label{
  flex:none;font-size:12px;letter-spacing:.16em;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;padding:4px 12px;background:var(--paper);
}
.art-head .rule{flex:1;height:1px;background:var(--line)}
.prose-art{font-size:17px;line-height:1.9;color:#1B2029;max-width:760px}
.prose-art > *+*{margin-top:1.3em}
.prose-art h2{
  font-size:clamp(22px,2.4vw,28px);font-weight:700;
  margin-top:48px;margin-bottom:16px;padding-left:16px;
  border-left:3px solid var(--brand);
}
.prose-art h3{font-size:20px;font-weight:600;margin-top:32px;margin-bottom:12px}
.prose-art p{margin:0}
.prose-art a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:2px}
.prose-art a:hover{text-decoration-color:var(--accent);color:var(--accent-deep)}
.prose-art ul,.prose-art ol{padding-left:0}
.prose-art ul li{position:relative;padding-left:20px;margin:8px 0}
.prose-art ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--brand);border-radius:1px;
}
.prose-art ol{counter-reset:item}
.prose-art ol li{position:relative;padding-left:30px;margin:8px 0}
.prose-art ol li::before{
  counter-increment:item;content:counter(item);
  position:absolute;left:0;top:.45em;font-family:var(--mono);font-size:13px;color:var(--brand-deep);font-weight:700;
}
.prose-art blockquote{
  margin:28px 0;padding:20px 24px;background:var(--paper-2);
  border-left:3px solid var(--ink);border-radius:0 8px 8px 0;color:var(--muted);
}
.prose-art blockquote p{margin:0}
.prose-art img{width:100%;border-radius:var(--radius-sm);margin:28px 0}
.prose-art figure{margin:28px 0}
.prose-art figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.prose-art table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0}
.prose-art th,.prose-art td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.prose-art th{font-weight:600;background:var(--paper-2)}
.prose-art hr{border:0;border-top:1px solid var(--line);margin:40px 0}
.prose-art code{font-family:var(--mono);font-size:14px;background:var(--paper-2);padding:2px 6px;border-radius:4px}

/* ---------- Sidebar ---------- */
.art-side{position:sticky;top:96px;display:grid;gap:24px}
.side-card{border:1px solid var(--line);border-radius:var(--radius);padding:28px;background:#fff}
.side-card.dark{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.side-card.dark .side-title{color:var(--paper)}
.side-card.dark p{color:rgba(246,245,241,.68)}
.side-title{font-size:18px;font-weight:600;margin-bottom:12px;color:var(--ink)}
.side-card p{font-size:14px;line-height:1.8;color:var(--muted)}
.side-card .btn{width:100%;margin-top:20px}
.side-list{display:grid;gap:12px;margin-top:16px}
.side-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:#26303B}
.side-list svg{flex:none;margin-top:5px;color:var(--brand)}

/* ---------- Tags ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:56px;padding-top:32px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--paper-2);font-size:13px;color:var(--ink);transition:background .2s ease,color .2s ease;
}
.tag:hover{background:var(--brand);color:#fff}

/* ---------- Empty ---------- */
.empty{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;border:1px dashed var(--line);border-radius:var(--radius);text-align:center;padding:40px 24px;
}
.empty svg{color:var(--muted)}
.empty p{font-size:15px;color:var(--muted)}

/* ---------- Related ---------- */
.rel-section{padding:0 0 96px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,2.6vw,34px)}
.text-link{font-size:14px;font-weight:600;color:var(--brand-deep);border-bottom:1px solid transparent;transition:border-color .2s ease,color .2s ease}
.text-link:hover{color:var(--accent-deep);border-color:var(--accent)}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(31,182,166,.4)}
.card-media{aspect-ratio:16/9;overflow:hidden;background:var(--paper-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:18px;font-weight:600;line-height:1.45}
.card:hover .card-body h3{color:var(--brand-deep)}
.card-body p{font-size:14px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-family:var(--mono);font-size:12px;color:var(--muted)}

/* ---------- CTA ---------- */
.cta-strip{background:var(--ink);color:var(--paper);padding:64px 0;position:relative;overflow:hidden}
.cta-strip::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:320px;height:320px;opacity:.10;
  background-image:radial-gradient(rgba(246,245,241,.8) 1px,transparent 1px);background-size:22px 22px;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);max-width:620px}
.cta-inner p{margin-top:12px;font-size:15px;color:rgba(246,245,241,.68);max-width:620px}
.cta-actions{display:flex;gap:12px;flex:none}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding:72px 0 32px;position:relative;overflow:hidden}
.site-footer::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:220px;opacity:.08;pointer-events:none;
  background-image:radial-gradient(rgba(246,245,241,.8) 1px,transparent 1px);background-size:24px 24px;
}
.site-footer .container{position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(246,245,241,.68);max-width:300px}
.site-footer h4{font-size:15px;font-weight:600;margin-bottom:18px}
.footer-links{display:grid;gap:2px}
.footer-links a{display:flex;align-items:center;min-height:40px;font-size:14px;color:rgba(246,245,241,.68);transition:color .2s ease,padding-left .2s ease}
.footer-links a:hover{color:var(--brand);padding-left:4px}
.footer-contact{display:grid;gap:12px;font-size:14px;color:rgba(246,245,241,.68)}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;line-height:1.6}
.footer-contact svg{flex:none;margin-top:4px;color:var(--brand)}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line-d);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:rgba(246,245,241,.5);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s cubic-bezier(.22,.61,.36,1),transform .4s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .art-hero{padding:118px 0 56px}
  .art-main{padding:56px 0 72px}
  .art-layout{grid-template-columns:minmax(0,1fr);gap:40px}
  .art-side{position:static}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
}
@media (max-width:639px){
  body{font-size:16px}
  .art-hero{padding:104px 0 48px}
  .art-hero h1{font-size:clamp(26px,7vw,32px)}
  .art-meta{font-size:12px;gap:10px}
  .art-meta span+span::before{height:10px}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .side-card{padding:22px}
  .rel-section{padding-bottom:64px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#0C1015;
  --ink-2:#171E29;
  --paper:#F6F5F1;
  --paper-2:#ECEAE3;
  --brand:#1FB6A6;
  --brand-deep:#0E7C72;
  --accent:#FF6A2B;
  --muted:#6E6A62;
  --line:rgba(12,16,21,.10);
  --line-d:rgba(246,245,241,.14);
  --radius:12px;
  --radius-sm:8px;
  --container:1240px;
  --shadow:0 18px 40px -20px rgba(12,16,21,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"SFMono-Regular","Menlo",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font:inherit;}
svg{display:block;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container{max-width:var(--container);margin:0 auto;padding:0 40px;}
.mono{font-family:var(--mono);}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;width:100%;z-index:60;
  --nav-fg:rgba(246,245,241,.78);
  --nav-fg-strong:#F6F5F1;
  transition:background-color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:var(--paper);
  border-bottom:1px solid var(--line);
  --nav-fg:var(--muted);
  --nav-fg-strong:var(--ink);
  box-shadow:0 10px 30px -24px rgba(12,16,21,.4);
}
.nav{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;color:var(--nav-fg-strong);transition:color .24s var(--ease);}
.logo-mark{width:26px;height:26px;flex:0 0 26px;}
.logo span{display:flex;flex-direction:column;font-size:16px;font-weight:700;line-height:1.15;letter-spacing:-.01em;}
.logo small{font-size:11px;font-weight:500;letter-spacing:.06em;color:var(--nav-fg);opacity:.85;margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--nav-fg);
  padding:6px 0;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:20px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover,.nav-link:focus-visible{color:var(--nav-fg-strong);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--nav-fg-strong);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line-d);
  display:flex;align-items:center;justify-content:center;color:var(--nav-fg);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.site-header.scrolled .icon-btn{border-color:var(--line);}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px);}
.icon-btn:active{transform:translateY(0);}
.nav-cta{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:999px;
  background:var(--accent);color:var(--ink);font-size:14px;font-weight:600;
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.nav-cta:hover{background:#E85C22;transform:translateY(-1px);}
.nav-cta:active{transform:translateY(0);}
.burger{
  display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  border-radius:var(--radius-sm);
}
.burger span{display:block;width:22px;height:2px;background:var(--nav-fg-strong);transition:transform .24s var(--ease),opacity .24s var(--ease);}
.burger:hover span{background:var(--brand);}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(12,16,21,.5);opacity:0;pointer-events:none;
  transition:opacity .26s var(--ease);z-index:70;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);
  background:var(--paper);z-index:80;transform:translateX(100%);
  transition:transform .28s var(--ease);display:flex;flex-direction:column;
  border-left:1px solid var(--line);
}
.drawer.open{transform:translateX(0);}
.drawer-head{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 20px;border-bottom:1px solid var(--line);}
.drawer-title{font-size:15px;font-weight:700;}
.drawer-close{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--muted);}
.drawer-close:hover{color:var(--ink);background:var(--paper-2);}
.drawer-nav{padding:8px 0;flex:1;overflow-y:auto;}
.drawer-nav a{
  display:flex;align-items:center;height:48px;padding:0 20px;font-size:15px;color:var(--ink);
  border-bottom:1px solid var(--line);border-left:3px solid transparent;
}
.drawer-nav a:hover{background:var(--paper-2);color:var(--brand-deep);}
.drawer-nav a.active{border-left-color:var(--brand);color:var(--brand-deep);font-weight:600;}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;justify-content:center;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;font-size:15px;font-weight:600;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--accent);color:var(--ink);}
.btn-primary:hover{background:#E85C22;transform:translateY(-2px);box-shadow:var(--shadow);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border:1px solid var(--line-d);color:var(--paper);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn-outline{border:1px solid var(--line);color:var(--ink);}
.btn-outline:hover{border-color:var(--ink);transform:translateY(-2px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
  border-bottom:2px solid transparent;padding-bottom:2px;transition:border-color .2s var(--ease),color .2s var(--ease);
}
.btn-text:hover{border-bottom-color:var(--accent);color:var(--brand-deep);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.12em;font-weight:600;
}
.badge-light{background:var(--paper-2);color:var(--ink);}
.badge-dark{background:var(--ink);color:var(--paper);}
.badge-brand{background:var(--brand-deep);color:#fff;}
.badge-accent{background:var(--accent);color:var(--ink);}

/* ---------- Page head ---------- */
.page-head{
  position:relative;color:var(--paper);
  background:
    linear-gradient(180deg,rgba(12,16,21,.86) 0%,rgba(12,16,21,.78) 55%,rgba(12,16,21,.9) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:132px 0 72px;
  overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(246,245,241,.55) 1px,transparent 1px);
  background-size:110px 96px;opacity:.10;
}
.page-head .container{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(246,245,241,.68);margin-bottom:24px;}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs a{transition:color .2s var(--ease);}
.crumbs a:hover,.crumbs a:focus-visible{color:var(--brand);}
.crumbs .sep{color:rgba(246,245,241,.35);}
.head-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:64px;align-items:end;}
.page-head h1{
  font-size:clamp(34px,5.2vw,64px);font-weight:800;line-height:1.12;letter-spacing:-.02em;
  margin:20px 0 20px;
}
.page-head h1 em{font-style:normal;color:var(--brand);}
.head-lead{max-width:640px;color:rgba(246,245,241,.78);font-size:17px;line-height:1.85;}
.head-side{border-left:1px solid var(--line-d);padding-left:32px;display:grid;gap:20px;}
.head-stat{display:flex;align-items:baseline;gap:10px;}
.head-stat b{font-family:var(--mono);font-size:30px;font-weight:700;letter-spacing:-.02em;color:var(--paper);}
.head-stat span{font-size:13px;color:rgba(246,245,241,.68);}

/* ---------- Anchor bar ---------- */
.anchor-bar{
  position:sticky;top:68px;z-index:40;background:var(--paper);
  border-bottom:1px solid var(--line);
}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none;}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-pill{
  flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);font-size:14px;font-weight:500;color:var(--muted);white-space:nowrap;
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.anchor-pill:hover{border-color:var(--brand);color:var(--brand-deep);}
.anchor-pill.active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}

/* ---------- Sections ---------- */
.section{padding:104px 0;}
.section-alt{background:var(--paper-2);}
.section-dark{background:var(--ink);color:var(--paper);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:56px;}
.section-head h2{font-size:clamp(26px,3vw,40px);font-weight:700;line-height:1.2;letter-spacing:-.01em;}
.section-head p{margin-top:14px;color:var(--muted);max-width:640px;}
.section-dark .section-head p{color:rgba(246,245,241,.68);}
.section-label{
  display:inline-block;font-size:12px;letter-spacing:.16em;color:var(--brand-deep);font-weight:600;margin-bottom:14px;
}
.section-dark .section-label{color:var(--brand);}

/* ---------- Split blocks ---------- */
.split{
  display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;
  padding:56px 0;border-top:1px solid var(--line);
}
.split:first-of-type{border-top:0;padding-top:0;}
.split.reverse .split-media{order:2;}
.split.reverse .split-body{order:1;}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-sm);}
.split-media figcaption{font-size:13px;color:var(--muted);margin-top:12px;line-height:1.6;}
.split-body h3{font-size:clamp(22px,2.2vw,28px);font-weight:700;line-height:1.35;margin-bottom:14px;letter-spacing:-.01em;}
.split-body .split-tag{margin-bottom:14px;display:flex;gap:8px;flex-wrap:wrap;}
.split-body p{color:var(--muted);margin-bottom:22px;}
.feature-list{display:grid;gap:12px;margin-bottom:26px;}
.feature-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.75;}
.feature-list svg{flex:0 0 18px;margin-top:5px;color:var(--brand);}
.split-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}

/* ---------- Stats asymmetric grid ---------- */
.stats-grid{display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:24px;}
.stat-main{
  grid-row:span 2;position:relative;border-radius:var(--radius);overflow:hidden;
  background:linear-gradient(180deg,rgba(12,16,21,.72),rgba(12,16,21,.88)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  color:var(--paper);padding:40px;display:flex;flex-direction:column;justify-content:space-between;min-height:360px;
}
.stat-main b{display:block;font-family:var(--mono);font-size:clamp(44px,6vw,72px);font-weight:700;line-height:1;letter-spacing:-.03em;}
.stat-main h3{font-size:20px;font-weight:600;margin:18px 0 10px;}
.stat-main p{color:rgba(246,245,241,.72);font-size:15px;}
.stat-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  display:flex;flex-direction:column;gap:10px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(31,182,166,.4);}
.stat-card b{font-family:var(--mono);font-size:34px;font-weight:700;letter-spacing:-.02em;color:var(--ink);line-height:1;}
.stat-card span{font-size:14px;color:var(--muted);}

/* ---------- Compare rows ---------- */
.compare{border-top:1px solid var(--line);}
.compare-row{
  display:grid;grid-template-columns:1.1fr 1.4fr 1.2fr 1fr;gap:24px;align-items:center;
  padding:26px 20px;border-bottom:1px solid var(--line);border-left:3px solid transparent;
  transition:background-color .2s var(--ease),border-color .2s var(--ease);
}
.compare-row:hover{background:var(--paper);border-left-color:var(--brand);}
.compare-head{
  font-size:12px;letter-spacing:.14em;color:var(--muted);font-weight:600;
  padding:14px 20px;border-bottom:1px solid var(--line);
}
.compare-row strong{font-size:17px;font-weight:600;}
.compare-row span{font-size:14px;color:var(--muted);line-height:1.7;}
.compare-row .cell-cta{display:flex;justify-content:flex-end;}
.section-alt .compare-row:hover{background:var(--paper);}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:16px 4px;text-align:left;font-size:17px;font-weight:600;line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-deep);}
.faq-q .chev{flex:0 0 20px;color:var(--muted);transition:transform .24s var(--ease),color .2s var(--ease);}
.faq-item.open .faq-q .chev{transform:rotate(180deg);color:var(--brand);}
.faq-a{overflow:hidden;height:0;transition:height .24s var(--ease);}
.faq-a-inner{padding:0 40px 24px 4px;font-size:15px;line-height:1.8;color:var(--muted);}
.faq-item.open .faq-a-inner{color:#4A463F;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);color:var(--paper);position:relative;overflow:hidden;padding:88px 0;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-60px;width:420px;height:420px;pointer-events:none;
  background-image:radial-gradient(rgba(246,245,241,.7) 1px,transparent 1px);
  background-size:52px 52px;opacity:.08;
}
.cta-band .container{position:relative;z-index:2;}
.cta-grid{display:grid;grid-template-columns:1.4fr .9fr;gap:56px;align-items:center;}
.cta-band h2{font-size:clamp(26px,3vw,40px);font-weight:700;line-height:1.22;letter-spacing:-.01em;margin-bottom:16px;}
.cta-band p{color:rgba(246,245,241,.72);max-width:600px;}
.cta-points{display:flex;flex-wrap:wrap;gap:24px;margin-top:26px;}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(246,245,241,.85);}
.cta-points svg{color:var(--brand);flex:0 0 18px;}
.cta-actions{display:flex;flex-direction:column;gap:16px;}
.cta-note{font-size:12px;color:rgba(246,245,241,.55);line-height:1.7;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding:88px 0 32px;position:relative;overflow:hidden;}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(246,245,241,.6) 1px,transparent 1px);
  background-size:96px 96px;opacity:.08;
}
.site-footer .container{position:relative;z-index:2;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px;border-bottom:1px solid var(--line-d);}
.site-footer .logo span{font-size:16px;}
.site-footer .logo small{color:rgba(246,245,241,.6);}
.footer-brand p{color:rgba(246,245,241,.68);font-size:14px;margin-top:20px;max-width:280px;}
.site-footer h4{font-size:14px;font-weight:600;letter-spacing:.06em;margin-bottom:20px;color:var(--paper);}
.footer-links li{min-height:44px;display:flex;align-items:center;}
.footer-links a{font-size:14px;color:rgba(246,245,241,.68);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block;}
.footer-links a:hover{color:var(--brand);transform:translateX(3px);}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(246,245,241,.68);min-height:44px;line-height:1.6;}
.footer-contact svg{flex:0 0 16px;margin-top:6px;color:var(--brand);}
.footer-bottom{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;padding-top:28px;font-size:12px;color:rgba(246,245,241,.5);}
.footer-bottom a{transition:color .2s var(--ease);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- Reveal ---------- */
.js .reveal{opacity:0;transform:translateY(16px);}
.js .reveal.is-visible{
  opacity:1;transform:none;
  transition:opacity .4s var(--ease),transform .4s var(--ease);
}
.js .reveal.d1.is-visible{transition-delay:.06s;}
.js .reveal.d2.is-visible{transition-delay:.12s;}
.js .reveal.d3.is-visible{transition-delay:.18s;}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 28px;}
  .nav-links{display:none;}
  .nav-right .icon-btn{display:none;}
  .burger{display:flex;}
  .section{padding:72px 0;}
  .head-grid{grid-template-columns:1fr;gap:40px;align-items:start;}
  .head-side{border-left:0;border-top:1px solid var(--line-d);padding-left:0;padding-top:28px;grid-template-columns:repeat(3,1fr);}
  .split{grid-template-columns:1fr;gap:32px;padding:48px 0;}
  .split.reverse .split-media{order:1;}
  .split.reverse .split-body{order:2;}
  .stats-grid{grid-template-columns:1fr;}
  .stat-main{grid-row:auto;min-height:300px;}
  .compare-row{grid-template-columns:1fr 1fr;gap:12px 20px;}
  .compare-head{display:none;}
  .compare-row .cell-cta{justify-content:flex-start;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .page-head{padding:112px 0 56px;}
  .page-head h1{margin:16px 0 16px;}
  .anchor-bar{top:68px;}
  .head-side{grid-template-columns:1fr;gap:14px;}
  .stat-main{padding:28px;}
  .stat-card{padding:22px;}
  .compare-row{grid-template-columns:1fr;padding:22px 4px;}
  .compare-row .cell-cta{justify-content:stretch;}
  .compare-row .cell-cta .btn{width:100%;}
  .faq-q{font-size:16px;}
  .faq-a-inner{padding-right:12px;}
  .cta-band{padding:64px 0;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation:none !important;transition:none !important;}
  .js .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#0C1015;
  --ink-2:#171E29;
  --paper:#F6F5F1;
  --paper-2:#ECEAE3;
  --brand:#1FB6A6;
  --brand-deep:#0E7C72;
  --accent:#FF6A2B;
  --muted:#6E6A62;
  --line:rgba(12,16,21,.10);
  --line-d:rgba(246,245,241,.14);
  --radius:12px;
  --radius-sm:8px;
  --shadow:0 18px 40px -20px rgba(12,16,21,.28);
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"SFMono-Regular","Menlo",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:17px;line-height:1.85;color:var(--ink);background:var(--paper);letter-spacing:0}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0}
ul,ol,dl,dd,dt{margin:0;padding:0}
li{list-style:none}
button{font-family:inherit}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
.section{padding:104px 0;border-top:1px solid var(--line)}
.section-alt{background:var(--paper-2)}
.section-dark{background:var(--ink);color:var(--paper);border-top:0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:56px}
.section-head h2{font-size:clamp(26px,3vw,40px);font-weight:700;line-height:1.2}
.section-head p{margin-top:14px;color:var(--muted);font-size:15px;max-width:620px}
.section-dark .section-head p{color:rgba(246,245,241,.68)}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.18em;color:var(--brand-deep);font-weight:600;margin-bottom:16px}
.section-dark .eyebrow{color:var(--brand)}
.link-more{font-size:14px;font-weight:600;color:var(--brand-deep);text-decoration:none;border-bottom:1px solid rgba(31,182,166,.4);padding-bottom:2px;white-space:nowrap}
.link-more:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* ---------- header / nav ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;height:68px;background:transparent;border-bottom:1px solid transparent;transition:background .24s ease,border-color .24s ease}
.site-header.is-solid{background:var(--paper);border-bottom-color:var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--paper);font-size:17px;font-weight:800;letter-spacing:-.01em}
.logo-mark{width:26px;height:26px;flex:none;color:rgba(246,245,241,.45)}
.logo span{display:flex;flex-direction:column;gap:5px;line-height:1}
.logo small{font-size:10px;font-weight:500;letter-spacing:.16em;color:rgba(246,245,241,.6)}
.site-header.is-solid .logo{color:var(--ink)}
.site-header.is-solid .logo-mark{color:rgba(12,16,21,.3)}
.site-header.is-solid .logo small{color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;display:inline-block;font-size:15px;font-weight:500;color:rgba(246,245,241,.82);text-decoration:none;padding:6px 0;transition:color .2s ease}
.nav-link::after{content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;background:var(--brand);transform:translateX(-50%);transition:width .2s ease}
.nav-link:hover{color:#fff}
.nav-link:hover::after{width:20px}
.nav-link.active{color:#fff;font-weight:600}
.nav-link.active::after{width:20px}
.site-header.is-solid .nav-link{color:rgba(12,16,21,.72)}
.site-header.is-solid .nav-link:hover,.site-header.is-solid .nav-link.active{color:var(--ink)}
.nav-link:focus-visible,.logo:focus-visible,.icon-btn:focus-visible,.nav-cta:focus-visible,.burger:focus-visible,.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.nav-right{display:flex;align-items:center;gap:14px}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid rgba(246,245,241,.32);background:transparent;color:var(--paper);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:border-color .2s,color .2s,background .2s}
.icon-btn:hover{border-color:var(--brand);color:var(--brand)}
.site-header.is-solid .icon-btn{border-color:var(--line);color:var(--ink)}
.site-header.is-solid .icon-btn:hover{border-color:var(--brand);color:var(--brand-deep)}
.nav-cta{display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:999px;background:var(--accent);color:var(--ink);font-size:15px;font-weight:700;text-decoration:none;transition:background .2s ease,transform .2s ease}
.nav-cta:hover{background:#E85C22;transform:translateY(-1px)}
.nav-cta:active{transform:translateY(0)}
.burger{display:none;width:44px;height:44px;border:0;background:transparent;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:6px}
.burger span{display:block;width:22px;height:2px;background:var(--paper);transition:background .2s}
.site-header.is-solid .burger span{background:var(--ink)}

/* ---------- drawer ---------- */
.mask{position:fixed;inset:0;background:rgba(12,16,21,.5);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s;z-index:90}
.mask.open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:var(--paper);z-index:95;transform:translateX(100%);transition:transform .28s cubic-bezier(.22,.61,.36,1);display:flex;flex-direction:column;padding:24px 20px;overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer-title{font-size:13px;letter-spacing:.16em;color:var(--muted);margin-bottom:12px}
.drawer-list{flex:1}
.drawer-list li{border-bottom:1px solid var(--line)}
.drawer-list a{display:flex;align-items:center;height:52px;font-size:16px;text-decoration:none;color:var(--ink);padding-left:12px;position:relative}
.drawer-list a.active{font-weight:700;color:var(--brand-deep)}
.drawer-list a.active::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:var(--brand);border-radius:2px}
.drawer-cta{display:flex;align-items:center;justify-content:center;height:52px;border-radius:var(--radius-sm);background:var(--accent);color:var(--ink);font-weight:700;text-decoration:none;margin-top:20px}
.drawer-cta:hover{background:#E85C22}

/* ---------- page hero ---------- */
.page-hero{position:relative;padding:132px 0 76px;color:var(--paper);background:linear-gradient(180deg,rgba(12,16,21,.78),rgba(12,16,21,.92)),url("/assets/images/backpic/back-2.webp") center/cover no-repeat}
.page-hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(246,245,241,.16) 1px,transparent 1px);background-size:46px 46px;opacity:.35;pointer-events:none}
.page-hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.45fr 1fr;gap:56px;align-items:end}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:rgba(246,245,241,.66);margin-bottom:24px}
.crumb li+li::before{content:"/";margin-right:10px;color:rgba(246,245,241,.4)}
.crumb a{text-decoration:none;color:rgba(246,245,241,.66);transition:color .2s}
.crumb a:hover{color:var(--brand)}
.badge{display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;font-size:12px;letter-spacing:.12em;font-weight:600}
.badge-brand{background:var(--brand-deep);color:#F6F5F1}
.badge-accent{background:var(--accent);color:var(--ink)}
.badge-light{background:var(--paper-2);color:var(--ink)}
.badge-dark{background:var(--ink);color:var(--paper)}
.page-hero h1{margin:20px 0 0;font-size:clamp(32px,4.6vw,56px);font-weight:800;line-height:1.14;letter-spacing:-.02em;max-width:760px}
.page-hero .hero-lead{margin-top:22px;font-size:17px;line-height:1.85;color:rgba(246,245,241,.78);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero-stats{border:1px solid var(--line-d);border-radius:var(--radius);padding:28px;background:rgba(255,255,255,.04)}
.hero-stats h2{font-size:13px;letter-spacing:.16em;color:rgba(246,245,241,.6);font-weight:600;margin-bottom:20px}
.stat-item+ .stat-item{margin-top:20px;padding-top:20px;border-top:1px solid var(--line-d)}
.stat-num{font-family:var(--mono);font-size:30px;font-weight:700;line-height:1.1;color:var(--brand)}
.stat-num small{font-size:13px;font-weight:500;color:rgba(246,245,241,.6);margin-left:6px;letter-spacing:.04em}
.stat-label{font-size:13px;color:rgba(246,245,241,.66);margin-top:6px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:52px;padding:0 28px;border-radius:var(--radius-sm);font-size:16px;font-weight:600;text-decoration:none;cursor:pointer;border:1px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease}
.btn-primary{background:var(--accent);color:var(--ink)}
.btn-primary:hover{background:#E85C22;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:rgba(246,245,241,.42);color:var(--paper);background:transparent}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-outline{border-color:var(--line);color:var(--ink);background:transparent}
.btn-outline:hover{border-color:var(--ink);transform:translateY(-1px)}
.btn-text{height:auto;padding:0;background:none;border:0;color:var(--brand-deep);font-weight:600;border-bottom:1px solid rgba(31,182,166,.4)}
.btn-text:hover{color:var(--accent);border-bottom-color:var(--accent)}
.btn-sm{height:44px;padding:0 20px;font-size:14px}
.btn:disabled{opacity:.45;cursor:not-allowed}

/* ---------- slot timeline cards ---------- */
.slot-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;padding-bottom:40px}
.slot-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 26px 26px 30px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.slot-card::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:0 3px 3px 0;background:var(--brand)}
.slot-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(31,182,166,.5)}
.slot-card.is-current::before{background:var(--accent)}
.slot-time{display:flex;align-items:center;font-family:var(--mono);font-size:15px;font-weight:600;color:var(--muted);letter-spacing:.02em}
.slot-card h3{font-size:21px;font-weight:600;margin:12px 0 8px}
.slot-card p{font-size:15px;color:var(--muted);line-height:1.8}
.slot-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.slot-meta li{font-family:var(--mono);font-size:13px;padding:5px 12px;border-radius:999px;background:var(--paper-2);color:var(--ink)}
.pulse-dot{position:relative;display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--accent);margin-right:10px}
.pulse-dot::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:1px solid var(--accent);animation:pulse 2.4s ease-out infinite}
@keyframes pulse{0%{transform:scale(.7);opacity:.9}70%{transform:scale(1.9);opacity:0}100%{transform:scale(1.9);opacity:0}}

/* ---------- venue asymmetric grid ---------- */
.venue-grid{display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:24px}
.venue-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease}
.venue-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.venue-card-lg{grid-row:1 / 3;display:flex;flex-direction:column}
.venue-card-lg .venue-media{aspect-ratio:16/10;overflow:hidden}
.venue-card .venue-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.venue-card:hover .venue-media img{transform:scale(1.03)}
.venue-body{padding:24px}
.venue-body h3{font-size:22px;font-weight:600}
.venue-body p{margin-top:10px;font-size:15px;color:var(--muted);line-height:1.8}
.venue-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.venue-facts li{font-family:var(--mono);font-size:12px;padding:5px 12px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.venue-card-sm{display:grid;grid-template-columns:132px 1fr;align-items:stretch}
.venue-card-sm .venue-media{height:100%;min-height:132px}

/* ---------- definition list ---------- */
.rules{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.rules-row{display:grid;grid-template-columns:260px 1fr;gap:24px;padding:24px 28px;border-bottom:1px solid var(--line)}
.rules-row:last-child{border-bottom:0}
.rules dt{font-size:15px;font-weight:600;color:var(--ink)}
.rules dt span{display:block;font-family:var(--mono);font-size:12px;color:var(--muted);font-weight:400;margin-top:4px;letter-spacing:.06em}
.rules dd{font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- split sections ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split+.split{margin-top:88px}
.split-media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split.reverse .split-media{order:2}
.split h3{font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.25}
.split p{margin-top:16px;font-size:16px;color:var(--muted);line-height:1.85}
.steps{margin-top:28px;border-top:1px solid var(--line)}
.steps li{display:grid;grid-template-columns:56px 1fr;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.steps .num{font-family:var(--mono);font-size:20px;font-weight:700;color:var(--brand-deep)}
.steps .t{font-size:16px;font-weight:600}
.steps .d{font-size:14px;color:var(--muted);line-height:1.75;margin-top:4px}
.ticks{margin-top:24px}
.ticks li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--muted);line-height:1.75;padding:8px 0}
.ticks svg{flex:none;margin-top:5px;color:var(--brand)}

/* ---------- faq ---------- */
.faq{max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 28px;background:none;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;transition:color .2s}
.faq-q:hover{color:var(--brand-deep)}
.faq-q svg{flex:none;color:var(--muted);transition:transform .18s ease}
.faq-item.open .faq-q svg{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-item.open .faq-a{max-height:420px}
.faq-a p{padding:0 28px 26px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- cta / form ---------- */
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.cta-grid h2{font-size:clamp(28px,3vw,40px);font-weight:700;line-height:1.2}
.cta-grid .cta-lead{margin-top:18px;font-size:16px;line-height:1.85;color:rgba(246,245,241,.72);max-width:520px}
.form-card{background:var(--paper);border-radius:var(--radius);padding:32px;color:var(--ink)}
.form-card h3{font-size:20px;font-weight:700}
.form-card .form-note{margin-top:8px;font-size:13px;color:var(--muted)}
.form-field{margin-top:20px}
.form-field label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:8px}
.form-field input,.form-field select{width:100%;height:48px;padding:0 14px;border-radius:var(--radius-sm);border:1px solid var(--line);background:#fff;font-family:inherit;font-size:15px;color:var(--ink);transition:border-color .2s ease,box-shadow .2s ease}
.form-field input:focus,.form-field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,106,43,.12)}
.form-submit{width:100%;height:52px;margin-top:26px;border:0;border-radius:var(--radius-sm);background:var(--accent);color:var(--ink);font-size:16px;font-weight:700;cursor:pointer;transition:background .2s ease,transform .2s ease}
.form-submit:hover{background:#E85C22;transform:translateY(-1px)}
.form-submit:active{transform:translateY(0)}
.form-tip{margin-top:12px;font-size:12px;color:var(--muted);line-height:1.7}
.form-tip.is-error{color:var(--accent)}
.form-tip.is-ok{color:var(--brand-deep);font-weight:600}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--ink);color:var(--paper);padding:88px 0 0;overflow:hidden}
.site-footer::before{content:"";position:absolute;inset:auto 0 0 0;height:280px;background-image:radial-gradient(rgba(246,245,241,.5) 1px,transparent 1px);background-size:40px 40px;opacity:.08;pointer-events:none}
.footer-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px}
.footer-brand p{margin-top:20px;font-size:14px;line-height:1.85;color:rgba(246,245,241,.62);max-width:300px}
.site-footer h4{font-size:14px;font-weight:600;letter-spacing:.08em;color:rgba(246,245,241,.9);margin-bottom:20px}
.footer-links li,.footer-contact li{margin-bottom:12px}
.footer-links a{font-size:14px;color:rgba(246,245,241,.66);text-decoration:none;transition:color .2s}
.footer-links a:hover{color:var(--brand)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(246,245,241,.66);line-height:1.7}
.footer-contact svg{flex:none;margin-top:4px;color:var(--brand)}
.footer-cta{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;margin-top:8px;border-radius:var(--radius-sm);background:var(--accent);color:var(--ink);font-weight:700;text-decoration:none;transition:background .2s ease,transform .2s ease}
.footer-cta:hover{background:#E85C22;transform:translateY(-1px)}
.footer-bottom{position:relative;z-index:1;margin-top:72px;padding:24px 0;border-top:1px solid var(--line-d);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12px;color:rgba(246,245,241,.5)}

/* ---------- reveal ---------- */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .4s cubic-bezier(.22,.61,.36,1),transform .4s cubic-bezier(.22,.61,.36,1)}
.js .reveal.in{opacity:1;transform:none}
.js .reveal.d1{transition-delay:.06s}
.js .reveal.d2{transition-delay:.12s}
.js .reveal.d3{transition-delay:.18s}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 28px}
  .section{padding:76px 0}
  .nav-links{display:none}
  .icon-btn{display:none}
  .burger{display:flex}
  .page-hero{padding:116px 0 64px}
  .page-hero-inner{grid-template-columns:1fr;gap:36px;align-items:start}
  .hero-stats{max-width:520px}
  .slot-grid{grid-template-columns:1fr;padding-bottom:0}
  .slot-grid .slot-card{transform:none!important}
  .venue-grid{grid-template-columns:1fr;grid-template-rows:auto}
  .venue-card-lg{grid-row:auto}
  .split{grid-template-columns:1fr;gap:32px}
  .split.reverse .split-media{order:0}
  .split+.split{margin-top:64px}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .rules-row{grid-template-columns:1fr;gap:8px}
}
@media (max-width:639px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:60px 0}
  .logo{font-size:15px}
  .logo small{display:none}
  .nav-cta{display:none}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:36px}
  .page-hero{padding:104px 0 56px}
  .hero-actions .btn{width:100%}
  .hero-stats{padding:22px}
  .slot-card{padding:22px 20px 22px 24px}
  .venue-card-sm{grid-template-columns:1fr}
  .venue-card-sm .venue-media{min-height:160px;aspect-ratio:16/9}
  .faq-q{padding:20px 20px;font-size:16px}
  .faq-a p{padding:0 20px 22px}
  .form-card{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#0C1015;
  --ink-2:#171E29;
  --paper:#F6F5F1;
  --paper-2:#ECEAE3;
  --brand:#1FB6A6;
  --brand-deep:#0E7C72;
  --accent:#FF6A2B;
  --accent-hover:#E85C22;
  --muted:#6E6A62;
  --line:rgba(12,16,21,.10);
  --line-d:rgba(246,245,241,.14);
  --radius:12px;
  --radius-sm:8px;
  --shadow:0 18px 40px -20px rgba(12,16,21,.28);
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"SFMono-Regular","Menlo",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  letter-spacing:0;
  color:var(--ink);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
ul,ol,dl{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{max-width:1240px;margin:0 auto;padding:0 40px}
.mono{font-family:var(--mono)}

/* ---------- 顶栏 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  color:var(--paper);
  background:transparent;
  transition:background .24s ease,color .24s ease,border-color .24s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:var(--paper);
  color:var(--ink);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;line-height:1.15;color:inherit}
.logo-mark{width:26px;height:26px;flex:none}
.logo span{display:flex;flex-direction:column}
.logo small{font-size:11px;font-weight:500;letter-spacing:.08em;opacity:.62;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;font-size:15px;font-weight:500;padding:6px 0;opacity:.86;transition:opacity .2s ease,color .2s ease}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-2px;width:20px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{opacity:1}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{opacity:1;font-weight:600}
.nav-right{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid currentColor;
  display:grid;place-items:center;color:inherit;opacity:.72;
  transition:opacity .2s ease,transform .2s ease,border-color .2s ease;
}
.icon-btn:hover{opacity:1;border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.nav-cta{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:999px;
  background:var(--accent);color:var(--ink);font-size:15px;font-weight:600;
  transition:background .2s ease,transform .2s ease;
}
.nav-cta:hover{background:var(--accent-hover);transform:translateY(-1px)}
.nav-cta:active{transform:translateY(0)}
.burger{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:6px}
.burger span{display:block;width:22px;height:2px;background:currentColor;transition:transform .2s ease,opacity .2s ease}
.burger.active span:first-child{transform:translateY(4px) rotate(45deg)}
.burger.active span:last-child{transform:translateY(-4px) rotate(-45deg)}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(12,16,21,.5);
  opacity:0;pointer-events:none;transition:opacity .24s ease;z-index:90;
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:var(--paper);z-index:100;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .28s cubic-bezier(.22,.61,.36,1);
  border-left:1px solid var(--line);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);font-weight:700;font-size:15px}
.drawer-close{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;font-size:16px;color:var(--muted)}
.drawer-close:hover{color:var(--ink);border-color:var(--ink)}
.drawer-links{flex:1;overflow-y:auto}
.drawer-links a{
  display:flex;align-items:center;min-height:48px;padding:0 20px;
  border-bottom:1px solid var(--line);font-size:15px;font-weight:500;color:var(--ink);
}
.drawer-links a.active{box-shadow:inset 3px 0 0 var(--brand);font-weight:600}
.drawer-cta{margin:20px;height:48px;justify-content:center;border-radius:999px;background:var(--accent);color:var(--ink);font-weight:600;display:flex;align-items:center}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:150px 0 72px;
  color:var(--paper);
  background:
    linear-gradient(180deg,rgba(12,16,21,.86),rgba(12,16,21,.72)),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(246,245,241,.5) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.12;pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:rgba(246,245,241,.68)}
.crumbs li{display:flex;align-items:center;gap:10px}
.crumbs li+li::before{content:"/";color:rgba(246,245,241,.4)}
.crumbs a:hover{color:var(--brand)}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;margin:24px 0 20px;
  padding:6px 14px;border-radius:999px;background:var(--brand-deep);
  font-size:12px;letter-spacing:.12em;font-weight:600;color:var(--paper);
}
.hero-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:48px;align-items:end}
.page-hero h1{
  font-size:clamp(30px,4.2vw,54px);font-weight:800;line-height:1.14;letter-spacing:-.02em;
  max-width:16em;
}
.page-hero .lede{margin-top:20px;max-width:34em;font-size:17px;line-height:1.8;color:rgba(246,245,241,.72)}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  border:1px solid var(--line-d);border-radius:var(--radius);
  background:rgba(23,30,41,.62);backdrop-filter:none;
}
.hero-stats div{padding:22px 18px;border-right:1px solid var(--line-d)}
.hero-stats div:last-child{border-right:none}
.hero-stats b{display:block;font-family:var(--mono);font-size:30px;font-weight:700;color:var(--brand);line-height:1.2}
.hero-stats span{display:block;margin-top:6px;font-size:12px;letter-spacing:.06em;color:rgba(246,245,241,.68)}

/* ---------- 区块 ---------- */
.section{padding:104px 0}
.section--alt{background:var(--paper-2)}
.section--dark{background:var(--ink);color:var(--paper)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap;margin-bottom:56px}
.section-head h2{font-size:clamp(26px,3vw,40px);font-weight:700;line-height:1.2}
.section-head p{margin-top:12px;max-width:46em;font-size:16px;color:var(--muted);line-height:1.8}
.section-head .more{font-size:15px;font-weight:600;color:var(--brand-deep);border-bottom:2px solid transparent;transition:border-color .2s ease,color .2s ease}
.section-head .more:hover{color:var(--accent);border-color:var(--accent)}
.eyebrow{display:inline-block;margin-bottom:14px;font-size:12px;letter-spacing:.16em;font-weight:600;color:var(--brand-deep)}

/* ---------- 步骤条 ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:24px}
.steps::before{content:"";position:absolute;top:26px;left:20px;right:20px;height:1px;background:var(--line)}
.step{position:relative}
.step-num{
  position:relative;z-index:1;display:inline-block;padding-right:14px;
  font-family:var(--mono);font-size:42px;font-weight:700;line-height:1;
  color:var(--ink);background:var(--paper-2);
}
.step h3{margin-top:22px;font-size:20px;font-weight:600;line-height:1.45}
.step p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--muted)}
.step-note{display:inline-block;margin-top:14px;font-family:var(--mono);font-size:13px;color:var(--brand-deep)}

/* ---------- 资料清单 ---------- */
.prepare{display:grid;grid-template-columns:1fr 1.15fr;gap:64px;align-items:center}
.prepare-figure{position:relative}
.prepare-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius)}
.prepare-figure::after{
  content:"";position:absolute;left:-1px;bottom:-1px;width:82px;height:82px;
  border-left:2px solid var(--brand);border-bottom:2px solid var(--brand);border-radius:0 0 0 10px;
}
.prepare h2{font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1.22}
.prepare p.lead{margin-top:16px;font-size:16px;color:var(--muted);line-height:1.85;max-width:38em}
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:14px 28px;margin-top:32px}
.check-list li{display:flex;gap:10px;font-size:15px;line-height:1.7;padding-bottom:12px;border-bottom:1px solid var(--line)}
.check-list svg{flex:none;margin-top:6px;color:var(--brand)}
.tip-box{
  margin-top:32px;padding:20px 22px;border-left:3px solid var(--accent);
  background:var(--paper);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-size:15px;color:var(--muted);line-height:1.8;
}
.tip-box strong{color:var(--ink);font-weight:600}

/* ---------- 规则定义列表 ---------- */
.rules{max-width:960px}
.rule-row{display:grid;grid-template-columns:220px 1fr;gap:32px;padding:24px 0;border-top:1px solid var(--line);align-items:start}
.rule-row:last-child{border-bottom:1px solid var(--line)}
.rule-row dt{font-size:16px;font-weight:600}
.rule-row dt span{display:block;margin-top:4px;font-family:var(--mono);font-size:12px;color:var(--muted);letter-spacing:.06em}
.rule-row dd{font-size:15px;color:var(--muted);line-height:1.85}
.rule-row dd b{color:var(--ink);font-weight:600}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:16px 0;text-align:left;font-size:17px;font-weight:600;
  color:var(--ink);transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-deep)}
.faq-q .chev{flex:none;transition:transform .18s ease;color:var(--muted)}
.faq-item.open .faq-q .chev{transform:rotate(180deg);color:var(--brand)}
.faq-a{overflow:hidden;max-height:0;transition:max-height .24s ease}
.faq-a p{padding:0 0 24px;font-size:15px;line-height:1.9;color:var(--muted);max-width:44em}

/* ---------- CTA 条 ---------- */
.cta-strip{background:var(--ink);color:var(--paper);padding:72px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:48px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(24px,2.8vw,34px);font-weight:700;line-height:1.24;max-width:22em}
.cta-inner p{margin-top:12px;font-size:15px;color:rgba(246,245,241,.68);max-width:40em;line-height:1.8}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 28px;border-radius:999px;font-size:16px;font-weight:600;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-primary{background:var(--accent);color:var(--ink)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-ghost{border:1px solid rgba(246,245,241,.4);color:var(--paper)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn:active{transform:translateY(0)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--ink);color:var(--paper);padding:72px 0 32px;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(246,245,241,.6) 1px,transparent 1px);
  background-size:48px 48px;opacity:.08;pointer-events:none;
}
.site-footer .container{position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(246,245,241,.6);max-width:20em}
.site-footer h4{font-size:14px;font-weight:600;letter-spacing:.06em;margin-bottom:16px}
.footer-links li,.footer-contact li{margin-bottom:10px}
.footer-links a,.footer-contact li{font-size:14px;color:rgba(246,245,241,.68);display:flex;align-items:center;min-height:28px;gap:8px;transition:color .2s ease}
.footer-links a:hover{color:var(--brand)}
.footer-contact svg{flex:none;color:var(--brand)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line-d);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:rgba(246,245,241,.55);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s cubic-bezier(.22,.61,.36,1),transform .4s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media(max-width:1023px){
  .container{padding:0 28px}
  .nav-links,.icon-btn{display:none}
  .burger{display:flex}
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px;align-items:start}
  .page-hero{padding:130px 0 56px}
  .prepare{grid-template-columns:1fr;gap:40px}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px}
  .steps::before{display:none}
  .step-num{font-size:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .hero-stats{grid-template-columns:1fr;border-radius:var(--radius)}
  .hero-stats div{border-right:none;border-bottom:1px solid var(--line-d);padding:16px 18px}
  .hero-stats div:last-child{border-bottom:none}
  .steps{grid-template-columns:1fr;gap:28px}
  .steps::before{display:block;left:17px;top:14px;bottom:14px;width:1px;height:auto;right:auto}
  .step{padding-left:56px}
  .step-num{
    position:absolute;left:0;top:-4px;width:36px;height:36px;padding:0;
    display:grid;place-items:center;border-radius:50%;
    border:1px solid var(--brand);background:var(--paper-2);
    font-size:15px;font-weight:700;color:var(--brand-deep);
  }
  .check-list{grid-template-columns:1fr}
  .rule-row{grid-template-columns:1fr;gap:8px;padding:20px 0}
  .cta-inner{gap:28px}
  .btn{width:100%;height:48px}
  .cta-actions{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#0C1015;
  --ink-2:#171E29;
  --paper:#F6F5F1;
  --paper-2:#ECEAE3;
  --card:#FFFFFF;
  --brand:#1FB6A6;
  --brand-deep:#0E7C72;
  --accent:#FF6A2B;
  --muted:#6E6A62;
  --line:rgba(12,16,21,.10);
  --line-d:rgba(246,245,241,.14);
  --radius:12px;
  --radius-sm:8px;
  --shadow:0 18px 40px -20px rgba(12,16,21,.28);
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"SFMono-Regular","Menlo",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
.section{padding:112px 0}
.section--tight{padding:80px 0}
.section--paper2{background:var(--paper-2)}
.section--ink{background:var(--ink);color:var(--paper)}
.section--ink .lede{color:rgba(246,245,241,.68)}

.h1{font-size:clamp(34px,5.2vw,64px);font-weight:800;line-height:1.12;letter-spacing:-.02em;margin:0}
.h2{font-size:clamp(26px,3vw,40px);font-weight:700;line-height:1.2;letter-spacing:-.01em;margin:0}
.h3{font-size:21px;font-weight:600;line-height:1.4;margin:0}
.lede{font-size:17px;line-height:1.85;color:var(--muted);margin:0}
.mono{font-family:var(--mono)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px;flex-wrap:wrap}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.14em;font-weight:600;color:var(--brand-deep);margin-bottom:14px}
.section--ink .eyebrow{color:var(--brand)}
.text-link{color:var(--brand-deep);font-weight:600;border-bottom:1px solid rgba(14,124,114,.35);padding-bottom:2px;transition:color 200ms var(--ease),border-color 200ms var(--ease)}
.text-link:hover{color:var(--accent);border-color:var(--accent)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:999px;border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:transform 200ms var(--ease),background-color 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease)}
.btn-primary{background:var(--accent);color:#0C1015}
.btn-primary:hover{background:#E85C22;transform:translateY(-1px)}
.btn-primary:active{background:#D5521C;transform:translateY(0)}
.btn-outline{border-color:var(--line);color:var(--ink);background:transparent}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px)}
.btn-ghost{border-color:rgba(246,245,241,.42);color:var(--paper);background:transparent}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-block{width:100%}
.btn-lg{height:52px;padding:0 32px}

.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;letter-spacing:.12em;padding:5px 12px;border-radius:999px;background:var(--paper-2);color:var(--ink)}
.badge-accent{background:var(--accent);color:#0C1015}
.badge-line{background:transparent;border:1px solid var(--line-d);color:rgba(246,245,241,.86)}

.check{width:16px;height:16px;flex:0 0 16px;margin-top:6px;color:var(--brand)}
.section--ink .check{color:var(--brand)}

/* ---------- header / nav ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;height:68px;display:flex;align-items:center;background:transparent;border-bottom:1px solid transparent;transition:background-color 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease)}
.site-header .container{width:100%}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:10px;color:var(--paper);font-weight:800;font-size:16px;letter-spacing:-.01em;transition:color 240ms var(--ease)}
.logo span{display:flex;flex-direction:column;line-height:1.15}
.logo small{font-size:11px;font-weight:500;letter-spacing:.1em;color:rgba(246,245,241,.6);margin-top:2px}
.logo-mark{width:22px;height:22px;flex:0 0 22px;color:var(--brand)}
.logo:hover .logo-mark{transform:translateX(2px)}
.logo-mark{transition:transform 200ms var(--ease)}

.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:rgba(246,245,241,.84);transition:color 200ms var(--ease)}
.nav-link:hover{color:#FFFFFF}
.nav-link::after{content:"";position:absolute;left:50%;bottom:0;width:20px;height:2px;background:var(--brand);border-radius:2px;transform:translateX(-50%) scaleX(0);transition:transform 200ms var(--ease)}
.nav-link.active::after{transform:translateX(-50%) scaleX(1)}

.nav-right{display:flex;align-items:center;gap:14px}
.icon-btn{width:40px;height:40px;border-radius:999px;border:1px solid rgba(246,245,241,.32);background:transparent;color:var(--paper);display:grid;place-items:center;cursor:pointer;transition:border-color 200ms var(--ease),color 200ms var(--ease),transform 200ms var(--ease)}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.nav-cta{display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:999px;background:var(--accent);color:#0C1015;font-size:14px;font-weight:600;transition:background-color 200ms var(--ease),transform 200ms var(--ease)}
.nav-cta:hover{background:#E85C22;transform:translateY(-1px)}
.burger{display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(246,245,241,.28);background:transparent;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;transition:border-color 200ms var(--ease)}
.burger:hover{border-color:var(--brand)}
.burger span{display:block;width:20px;height:2px;background:var(--paper);transition:background-color 240ms var(--ease)}

.site-header.is-solid{background:var(--paper);border-bottom-color:var(--line);box-shadow:0 10px 30px -24px rgba(12,16,21,.4)}
.site-header.is-solid .logo{color:var(--ink)}
.site-header.is-solid .logo small{color:var(--muted)}
.site-header.is-solid .nav-link{color:rgba(12,16,21,.78)}
.site-header.is-solid .nav-link:hover{color:var(--ink)}
.site-header.is-solid .icon-btn{border-color:var(--line);color:var(--ink)}
.site-header.is-solid .burger{border-color:var(--line)}
.site-header.is-solid .burger span{background:var(--ink)}

.nav-overlay{position:fixed;inset:0;background:rgba(12,16,21,.5);opacity:0;visibility:hidden;transition:opacity 200ms var(--ease),visibility 200ms var(--ease);z-index:65}
.nav-overlay.is-open{opacity:1;visibility:visible}
.drawer-cta{display:none}

/* ---------- hero ---------- */
.page-hero{position:relative;background:var(--ink);color:var(--paper);padding:152px 0 80px;overflow:hidden}
.page-hero__bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center}
.page-hero__mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,16,21,.72),rgba(12,16,21,.88))}
.page-hero__stars{position:absolute;inset:0;opacity:.16;background-image:radial-gradient(circle,rgba(246,245,241,.9) 1px,transparent 1.3px);background-size:46px 46px;animation:drift 30s linear infinite}
@keyframes drift{from{background-position:0 0}to{background-position:138px 92px}}
.page-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,.85fr);gap:48px;align-items:end}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0 0 22px;font-size:13px;color:rgba(246,245,241,.66)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:rgba(246,245,241,.4)}
.crumbs a{transition:color 200ms var(--ease)}
.crumbs a:hover{color:var(--brand)}
.hero-sub{margin:22px 0 0;max-width:620px;font-size:17px;line-height:1.85;color:rgba(246,245,241,.76)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-card{background:rgba(23,30,41,.74);border:1px solid var(--line-d);border-radius:var(--radius);overflow:hidden}
.hero-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-card dl{margin:0}
.hero-card .row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 20px;border-top:1px solid var(--line-d)}
.hero-card .row dt{font-size:13px;color:rgba(246,245,241,.66)}
.hero-card .row dd{margin:0;font-family:var(--mono);font-size:16px;font-weight:600;color:var(--brand)}

/* ---------- 总览（非对称） ---------- */
.overview{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:44px;align-items:start}
.feature-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform 200ms var(--ease),box-shadow 200ms var(--ease)}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.feature-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.feature-card__body{padding:28px 30px 32px}
.feature-card__body .lede{margin-top:14px;font-size:16px}
.stat-list{border-top:1px solid var(--line)}
.stat-row{padding:22px 0;border-bottom:1px solid var(--line)}
.stat-row dt,.stat-row .stat-label{font-size:13px;letter-spacing:.08em;color:var(--muted)}
.stat-val{font-family:var(--mono);font-size:34px;font-weight:700;letter-spacing:-.02em;line-height:1.2;margin:6px 0 8px;color:var(--ink)}
.stat-val em{font-style:normal;font-size:15px;font-weight:500;color:var(--muted);margin-left:6px}
.stat-row p{margin:0;font-size:14px;line-height:1.75;color:var(--muted)}
.stat-more{margin-top:26px;display:inline-flex}

/* ---------- 三档方案 ---------- */
.tiers{margin-top:8px;border-top:1px solid var(--line)}
.tier{display:grid;grid-template-columns:230px minmax(0,1fr) 210px;gap:32px;align-items:center;padding:34px 26px;border-bottom:1px solid var(--line);transition:background-color 200ms var(--ease)}
.tier:hover{background:rgba(31,182,166,.05)}
.tier--featured{border:1px solid var(--brand);border-radius:var(--radius);background:rgba(31,182,166,.06)}
.tier-head{display:flex;flex-direction:column;gap:6px}
.tier-name{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:20px;font-weight:600}
.tier-desc{font-size:13px;color:var(--muted)}
.tier-price{font-family:var(--mono);font-size:34px;font-weight:700;letter-spacing:-.02em;margin-top:14px;line-height:1.2}
.tier-price small{font-family:var(--font);font-size:14px;font-weight:500;color:var(--muted);margin-left:6px}
.tier-perks{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 30px;font-size:15px}
.tier-perks li{display:flex;gap:10px;align-items:flex-start;line-height:1.6}
.tier-perks li span{color:rgba(12,16,21,.86)}
.tier-cta{display:flex;flex-direction:column;gap:10px}
.tier-cta .tip{font-size:12px;color:var(--muted);text-align:center}
.tier-note{margin-top:28px;font-size:13px;color:var(--muted)}

/* ---------- 步骤条 ---------- */
.steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:24px;margin-top:56px;position:relative}
.steps::before{content:"";position:absolute;left:0;right:0;top:24px;height:1px;background:var(--line)}
.step{position:relative}
.step-num{position:relative;z-index:1;display:inline-block;padding-right:14px;background:var(--paper);font-family:var(--mono);font-size:30px;font-weight:700;color:var(--brand);line-height:1.1}
.section--paper2 .step-num{background:var(--paper-2)}
.step .h3{margin-top:16px;font-size:18px}
.step p{margin:8px 0 0;font-size:14px;line-height:1.75;color:var(--muted)}

/* ---------- 图文交替 ---------- */
.split{display:grid;gap:56px;align-items:center}
.split--media-first{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr)}
.split--text-first{grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr)}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-sm);border:1px solid var(--line)}
.split + .split{margin-top:88px}
.plain-list{list-style:none;margin:24px 0 0;display:grid;gap:14px}
.plain-list li{display:flex;gap:12px;align-items:flex-start;font-size:16px;line-height:1.75}
.plain-list li strong{font-weight:600}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;background:none;border:0;padding:22px 0;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:17px;font-weight:600;color:var(--ink);text-align:left;cursor:pointer;transition:color 200ms var(--ease)}
.faq-q:hover{color:var(--brand-deep)}
.faq-q .chev{flex:0 0 18px;color:var(--muted);transition:transform 180ms var(--ease),color 200ms var(--ease)}
.faq-item.open .chev{transform:rotate(180deg);color:var(--brand-deep)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease)}
.faq-a p{margin:0;padding:0 0 24px;max-width:680px;font-size:15px;line-height:1.8;color:var(--muted)}

/* ---------- CTA + 表单 ---------- */
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:56px;align-items:start}
.cta-points{list-style:none;display:flex;flex-wrap:wrap;gap:14px 32px;margin-top:32px}
.cta-points li{display:flex;gap:10px;align-items:center;font-size:15px;color:rgba(246,245,241,.86)}
.form-card{background:var(--paper);color:var(--ink);border-radius:var(--radius);padding:32px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:8px}
.field input,.field select{width:100%;height:48px;padding:0 14px;background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius-sm);transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease)}
.field input::placeholder{color:rgba(110,106,98,.7)}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,106,43,.12)}
.form-note{margin:12px 0 0;font-size:12px;line-height:1.7;color:var(--muted)}
.form-note.is-error{color:var(--accent)}
.form-note.is-ok{color:var(--brand-deep)}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--ink);color:var(--paper);padding:80px 0 0;overflow:hidden}
.site-footer::before{content:"";position:absolute;inset:0;opacity:.08;background-image:radial-gradient(circle,rgba(246,245,241,.9) 1px,transparent 1.3px);background-size:44px 44px}
.site-footer .container{position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{margin:18px 0 0;max-width:290px;font-size:14px;line-height:1.8;color:rgba(246,245,241,.68)}
.site-footer h4{margin:0 0 18px;font-size:14px;font-weight:600;letter-spacing:.08em;color:rgba(246,245,241,.92)}
.footer-links{list-style:none}
.footer-links li a{display:block;padding:8px 0;font-size:14px;color:rgba(246,245,241,.68);transition:color 200ms var(--ease),transform 200ms var(--ease)}
.footer-links li a:hover{color:var(--brand);transform:translateX(2px)}
.footer-contact{list-style:none}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;font-size:14px;line-height:1.7;color:rgba(246,245,241,.68)}
.footer-contact svg{flex:0 0 16px;margin-top:5px;color:var(--brand)}
.footer-cta{margin-top:16px}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:56px;padding:24px 0 32px;border-top:1px solid var(--line-d);font-size:12px;color:rgba(246,245,241,.5)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 400ms var(--ease),transform 400ms var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 28px}
  .section{padding:80px 0}
  .section--tight{padding:64px 0}
  .burger{display:flex}
  .icon-btn{display:none}
  .nav-links{position:fixed;top:0;right:0;z-index:70;display:flex;flex-direction:column;gap:0;width:min(320px,86vw);height:100vh;padding:88px 24px 104px;background:var(--paper);transform:translateX(100%);transition:transform 240ms var(--ease);overflow-y:auto;box-shadow:-20px 0 40px -24px rgba(12,16,21,.4)}
  .nav-links.is-open{transform:none}
  .nav-links li{border-bottom:1px solid var(--line)}
  .nav-link{display:flex;align-items:center;height:48px;color:var(--ink);font-size:15px}
  .nav-link:hover{color:var(--brand-deep)}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--brand-deep);box-shadow:inset 3px 0 0 var(--brand);padding-left:12px}
  .drawer-cta{display:block;position:absolute;left:0;right:0;bottom:0;padding:16px 24px;border:0;border-top:1px solid var(--line);background:var(--paper)}
  .hero-grid{grid-template-columns:1fr;gap:40px;align-items:start}
  .page-hero{padding:128px 0 64px}
  .overview{grid-template-columns:1fr;gap:36px}
  .tier{grid-template-columns:190px minmax(0,1fr);}
  .tier-cta{grid-column:2;flex-direction:row;align-items:center;justify-content:flex-start}
  .tier-cta .tip{text-align:left}
  .steps{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:40px}
  .steps::before{display:none}
  .split--media-first,.split--text-first{grid-template-columns:1fr;gap:32px}
  .split-media{order:-1}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section--tight{padding:56px 0}
  .section-head{margin-bottom:32px}
  .page-hero{padding:116px 0 56px}
  .logo small{display:none}
  .h1{font-size:clamp(30px,9vw,40px)}
  .tier{grid-template-columns:1fr;gap:22px;padding:26px 20px}
  .tier-perks{grid-template-columns:1fr}
  .tier-cta{grid-column:1;flex-direction:column;align-items:stretch}
  .tier-cta .tip{text-align:left}
  .steps{grid-template-columns:1fr;gap:32px}
  .step .h3{margin-top:10px}
  .split + .split{margin-top:56px}
  .form-card{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{margin-top:40px}
  .cta-points{flex-direction:column;gap:12px}
}

@media (max-width:519px){
  .nav-cta{display:none}
  .hero-card .row{padding:10px 16px}
  .stat-val{font-size:28px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:0.01ms !important}
  .reveal{opacity:1;transform:none}
}