/* roulang page: index */
:root{
  --bg:#F6F3EE;
  --bg-alt:#EDE7DC;
  --sand:#FAF7F2;
  --ink:#0F2E2A;
  --teal:#1E5148;
  --amber:#C97B2E;
  --amber-deep:#B0671F;
  --t1:#10201D;
  --t2:#3A4340;
  --t3:#6E7671;
  --line:#E4DDD0;
  --line-soft:#EAE4D8;
  --disabled:#DCD5C9;
  --ok:#2F6B4E;
  --err:#A33A2E;
  --r-sm:6px;
  --r-md:10px;
  --r-lg:16px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(15,46,42,.06);
  --sh2:0 14px 32px -14px rgba(15,46,42,.18);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Consolas,"Courier New",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(--bg);
  color:var(--t2);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{font-family:var(--serif);color:var(--t1);margin:0;font-weight:600;letter-spacing:-.005em}
h1{font-size:40px;line-height:1.2}
h2{font-size:30px;line-height:1.3}
h3{font-size:20px;line-height:1.4}
h4{font-size:16px;line-height:1.5;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.mono{font-family:var(--mono)}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  height:76px;
  display:flex;
  align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:height .24s var(--ease),background-color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(246,243,238,.96);
  border-bottom-color:var(--line);
  box-shadow:var(--sh1);
  backdrop-filter:saturate(120%) blur(6px);
}
.header-inner{display:flex;align-items:center;gap:24px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:30px;height:30px;display:grid;place-items:center;border:1px solid var(--ink);border-radius:9px;color:var(--ink);flex:0 0 auto}
.brand-name{font-family:var(--serif);font-size:18px;font-weight:600;color:var(--t1);letter-spacing:.01em;white-space:nowrap}
.nav-desktop{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--t2);
  white-space:nowrap;
  transition:color .16s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--amber);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--t1)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--t1);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:16px}
.menu-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-md);
  align-items:center;justify-content:center;background:var(--sand);
}
.menu-toggle:hover{border-color:var(--amber)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background-position .28s var(--ease),transform .16s var(--ease),box-shadow .24s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  color:#fff;
  border-color:var(--amber);
  background-image:linear-gradient(90deg,var(--amber-deep) 50%,var(--amber) 50%);
  background-size:200% 100%;
  background-position:100% 0;
  box-shadow:var(--sh1);
}
.btn-primary:hover{background-position:0 0;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-ghost{color:var(--ink);border-color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:var(--bg);transform:translateY(-1px)}
.btn-light{color:var(--ink);background:var(--bg);border-color:var(--bg)}
.btn-light:hover{background:var(--amber);border-color:var(--amber);color:#fff;transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.06em;
  background:var(--sand);color:var(--teal);border:1px solid var(--line);
}
.badge-amber{background:#FBF6EE;color:var(--amber-deep);border-color:#EBD9BC}
.badge-teal{background:transparent;color:var(--teal);border-color:var(--teal)}
.badge-lock{background:rgba(246,243,238,.92);color:var(--t1);border-color:var(--line)}

/* ---------- hero ---------- */
.hero{padding:150px 0 96px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;left:-8%;top:-40px;width:520px;height:300px;
  border:1px solid var(--line);border-radius:50%;opacity:.55;pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center}
.hero-copy{grid-column:span 6;position:relative;z-index:1}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--amber-deep);
  font-family:var(--mono);text-transform:uppercase;margin-bottom:20px;
}
.hero-eyebrow span.dot{width:6px;height:6px;border-radius:50%;background:var(--amber);display:inline-block}
.hero h1{margin-bottom:20px}
.hero-sub{font-size:17px;line-height:1.85;color:var(--t2);max-width:520px;margin-bottom:32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:44px}
.hero-stats{display:flex;gap:44px;flex-wrap:wrap;padding-top:28px;border-top:1px solid var(--line)}
.stat{display:flex;flex-direction:column;gap:4px}
.stat-num{font-family:var(--mono);font-size:34px;font-weight:600;color:var(--amber);line-height:1.1}
.stat-label{font-size:12px;color:var(--t3);letter-spacing:.06em}
.hero-visual{grid-column:span 6;position:relative}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh2);
  aspect-ratio:4/5;background:var(--bg-alt);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);
  border:1px solid rgba(246,243,238,.42);pointer-events:none;
}
.hero-note{
  position:absolute;left:-18px;bottom:28px;background:var(--bg);
  border:1px solid var(--line);border-radius:var(--r-md);
  padding:14px 18px;box-shadow:var(--sh1);max-width:230px;
}
.hero-note strong{display:block;font-family:var(--mono);font-size:13px;color:var(--amber-deep);letter-spacing:.06em;margin-bottom:4px}
.hero-note span{font-size:13px;color:var(--t3);line-height:1.6}

/* ---------- section heading ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.sec-head-copy{max-width:680px}
.sec-kicker{
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--amber-deep);
  text-transform:uppercase;margin-bottom:14px;display:block;
}
.sec-head p{margin-top:14px;font-size:15px;color:var(--t3);line-height:1.8}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);
  padding-bottom:2px;border-bottom:1px solid var(--line);white-space:nowrap;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.link-more:hover{color:var(--amber-deep);border-color:var(--amber)}

/* ---------- compare table ---------- */
.compare-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--bg)}
.compare-table{width:100%;border-collapse:collapse;min-width:720px}
.compare-table thead th{
  position:sticky;top:0;z-index:2;
  background:var(--bg);
  font-family:var(--sans);font-size:13px;letter-spacing:.08em;font-weight:600;color:var(--ink);
  text-align:center;padding:18px 16px;border-bottom:1px solid var(--line);
}
.compare-table thead th:first-child{text-align:left;width:34%;color:var(--t3)}
.compare-table tbody th{
  position:sticky;left:0;z-index:1;background:var(--bg);
  text-align:left;font-family:var(--sans);font-weight:500;font-size:15px;color:var(--t1);
  padding:0 16px;height:56px;border-bottom:1px solid var(--line-soft);
}
.compare-table tbody td{
  text-align:center;height:56px;border-bottom:1px solid var(--line-soft);
  color:var(--t3);font-size:14px;padding:0 16px;
}
.compare-table tbody tr:hover th,
.compare-table tbody tr:hover td{background:var(--sand)}
.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td{border-bottom:0}
.col-reco{background:#FBF6EE}
.compare-table thead th.col-reco{background:#FBF6EE;border-left:1.5px solid var(--amber);border-right:1.5px solid var(--amber);position:relative}
.compare-table tbody td.col-reco{border-left:1.5px solid var(--amber);border-right:1.5px solid var(--amber)}
.compare-table tbody tr:last-child td.col-reco{border-bottom:1.5px solid var(--amber)}
.reco-tag{
  position:absolute;top:-11px;left:50%;transform:translateX(-50%);
  background:var(--amber);color:#fff;font-size:11px;letter-spacing:.08em;
  padding:2px 10px;border-radius:var(--r-pill);font-weight:600;white-space:nowrap;
}
.mark-ok{color:var(--ok);display:inline-flex}
.mark-no{color:var(--disabled);display:inline-flex}
.compare-foot{margin-top:16px;font-size:13px;color:var(--t3)}
.compare-tabs{display:none}
.tier-tabbar{display:flex;gap:8px;margin-bottom:20px}
.tier-tab{
  flex:1;height:42px;border:1px solid var(--line);border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:var(--t2);background:var(--bg);
  transition:all .2s var(--ease);
}
.tier-tab.is-active{background:var(--ink);border-color:var(--ink);color:var(--bg)}
.tier-panel{display:none;border:1px solid var(--line);border-radius:var(--r-md);background:var(--bg);padding:8px 16px}
.tier-panel.is-active{display:block}
.tier-item{display:flex;align-items:center;gap:10px;padding:13px 0;border-bottom:1px solid var(--line-soft);font-size:15px;color:var(--t1)}
.tier-item:last-child{border-bottom:0}
.tier-ico{display:inline-flex;flex:0 0 auto}
.tier-ico.ok{color:var(--ok)}
.tier-ico.no{color:var(--disabled)}

/* ---------- tier cards ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start}
.tier-card{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-md);
  padding:32px 28px 28px;position:relative;display:flex;flex-direction:column;gap:18px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.tier-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--amber)}
.tier-card-1{grid-column:span 4}
.tier-card-2{grid-column:span 4;margin-top:40px}
.tier-card-3{grid-column:span 4;margin-top:80px}
.tier-card.is-featured{border-top:4px solid var(--amber);padding-top:29px}
.tier-name{font-family:var(--mono);font-size:13px;letter-spacing:.14em;color:var(--amber-deep);text-transform:uppercase}
.tier-card h3{font-size:24px}
.tier-desc{font-size:14px;color:var(--t3);line-height:1.75}
.tier-list{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--t2)}
.tier-list li{display:flex;gap:10px;align-items:flex-start}
.tier-list li svg{flex:0 0 auto;margin-top:5px;color:var(--teal)}
.tier-price{
  display:flex;align-items:baseline;gap:8px;padding-top:18px;border-top:1px solid var(--line-soft);
  font-family:var(--mono);color:var(--ink);
}
.tier-price strong{font-size:26px;font-weight:600}
.tier-price span{font-size:13px;color:var(--t3);font-family:var(--sans)}

/* ---------- preview cards ---------- */
.preview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.preview-card{
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--bg);overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.preview-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--amber)}
.preview-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.preview-media img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease)}
.preview-card:hover .preview-media img{transform:scale(1.02)}
.preview-veil{
  position:absolute;inset:0;display:grid;place-items:center;
  background:rgba(246,243,238,.72);transition:background-color .24s var(--ease);
}
.preview-card:hover .preview-veil{background:rgba(246,243,238,.28)}
.preview-veil .lock{
  display:inline-flex;align-items:center;gap:8px;background:var(--bg);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 14px;
  font-size:12px;letter-spacing:.06em;color:var(--t1);
}
.preview-body{padding:20px 20px 24px;display:flex;flex-direction:column;gap:12px}
.preview-body h3{font-size:17px;line-height:1.5}
.preview-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--t3);font-family:var(--mono)}

/* ---------- news ---------- */
.news-lead{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-bottom:32px}
.news-card{
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--bg);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--amber)}
.news-card-media{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.news-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease)}
.news-card:hover .news-card-media img{transform:scale(1.02)}
.news-card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-card-title{font-size:19px;line-height:1.5}
.news-card-title a:hover{color:var(--amber-deep)}
.news-card-sum{font-size:14px;color:var(--t3);line-height:1.75}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px}
.news-meta time{font-family:var(--mono);font-size:12px;color:var(--t3)}
.news-rows{border-top:1px solid var(--line)}
.news-row{
  display:grid;grid-template-columns:120px 1fr auto 24px;align-items:center;gap:20px;
  padding:18px 8px;border-bottom:1px solid var(--line-soft);
  transition:background-color .2s var(--ease);
}
.news-row:hover{background:var(--sand)}
.news-row-date{font-family:var(--mono);font-size:13px;color:var(--t3)}
.news-row-title{font-size:16px;color:var(--t1);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.news-row:hover .news-row-title{color:var(--amber-deep)}
.news-row-cat{font-size:12px;letter-spacing:.06em;color:var(--teal);white-space:nowrap}
.news-row-arrow{display:inline-flex;color:var(--t3);transition:transform .2s var(--ease),color .2s var(--ease)}
.news-row:hover .news-row-arrow{transform:translateY(-2px);color:var(--amber)}
.empty-state{
  border:1px dashed var(--disabled);border-radius:var(--r-md);
  padding:56px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;
  color:var(--t3);
}
.empty-state svg{color:var(--disabled)}
.empty-state p{font-size:15px}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
.faq-aside{position:sticky;top:96px}
.faq-aside p{margin-top:16px;font-size:15px;color:var(--t3);line-height:1.85}
.faq-aside .btn{margin-top:24px}
.faq-list{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;
  padding:22px 4px 22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--t1);
  position:relative;transition:color .16s var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;background:var(--amber);
  opacity:0;transition:opacity .2s var(--ease);
}
.faq-q:hover{color:var(--amber-deep)}
.faq-item.is-open .faq-q{padding-left:16px;color:var(--amber-deep)}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-q .chev{flex:0 0 auto;color:var(--t3);transition:transform .24s var(--ease)}
.faq-item.is-open .chev{transform:rotate(180deg);color:var(--amber)}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .28s var(--ease),opacity .28s var(--ease),padding .28s var(--ease)}
.faq-item.is-open .faq-a{max-height:320px;opacity:1;padding:0 24px 22px 16px}
.faq-a p{font-size:15px;line-height:1.85;color:var(--t3)}

/* ---------- cta ---------- */
.cta-band{background:var(--ink);color:var(--bg);position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(246,243,238,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(246,243,238,.06) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.5;pointer-events:none;
}
.cta-grid{position:relative;display:grid;grid-template-columns:6fr 5fr;gap:64px;align-items:center}
.cta-band h2{color:var(--bg);font-size:34px;line-height:1.35}
.cta-band p{color:rgba(246,243,238,.72);margin-top:18px;font-size:16px;line-height:1.85;max-width:520px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.cta-points span{
  border:1px solid rgba(246,243,238,.24);border-radius:var(--r-pill);
  padding:5px 14px;font-size:13px;color:rgba(246,243,238,.85);
}
.cta-form{
  background:rgba(246,243,238,.05);border:1px solid rgba(246,243,238,.18);
  border-radius:var(--r-lg);padding:32px;
}
.cta-form h3{color:var(--bg);font-size:19px;margin-bottom:6px}
.cta-form > p{font-size:13px;color:rgba(246,243,238,.6);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:rgba(246,243,238,.72);margin-bottom:8px;letter-spacing:.04em}
.field input{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-sm);
  background:rgba(246,243,238,.96);border:1px solid transparent;color:var(--t1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input::placeholder{color:#9AA29C}
.field input:focus{outline:none;border-color:var(--amber);box-shadow:0 0 0 3px rgba(201,123,46,.22)}
.field.has-error input{border-color:#E38B7C;box-shadow:0 0 0 3px rgba(163,58,46,.22)}
.field-msg{font-size:13px;color:#F0B3A6;margin-top:6px;display:none}
.field.has-error .field-msg{display:block}
.form-hint{font-size:12px;color:rgba(246,243,238,.55);line-height:1.7;margin-top:14px}
.form-status{
  margin-top:14px;font-size:13px;color:#9AD3B4;display:none;align-items:center;gap:8px;
}
.form-status.is-visible{display:flex}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(246,243,238,.78);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-mark{border-color:rgba(246,243,238,.4);color:var(--bg)}
.footer-brand span{font-family:var(--serif);font-size:18px;color:var(--bg);font-weight:600}
.footer-about{font-size:14px;line-height:1.85;color:rgba(246,243,238,.62);max-width:320px}
.footer-col h4{color:var(--bg);font-size:14px;letter-spacing:.06em;margin-bottom:18px;font-family:var(--sans)}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:rgba(246,243,238,.72);transition:color .16s var(--ease)}
.footer-col a:hover{color:var(--amber);text-decoration:underline;text-underline-offset:3px}
.footer-col li span{font-size:14px;color:rgba(246,243,238,.72)}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid rgba(246,243,238,.16);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(246,243,238,.5);font-family:var(--mono);
}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:200;background:var(--bg);
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:24px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:36px}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-md);display:grid;place-items:center}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1}
.drawer-nav a{
  font-family:var(--serif);font-size:24px;color:var(--t1);padding:16px 0 16px 16px;
  border-left:3px solid transparent;position:relative;
}
.drawer-nav a.is-active{border-left-color:var(--amber);color:var(--amber-deep)}
.drawer-footer{padding-top:24px;border-top:1px solid var(--line)}
body.drawer-open{overflow:hidden}

/* ---------- reveal ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.js .reveal.is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  h1{font-size:34px}
  h2{font-size:26px}
  .hero{padding:130px 0 72px}
  .hero-copy,.hero-visual{grid-column:span 12}
  .hero-visual{order:2;max-width:520px}
  .hero-note{left:auto;right:16px;bottom:16px}
  .nav-desktop{display:none}
  .menu-toggle{display:inline-flex}
  .header-actions{margin-left:auto}
  .tier-card-1,.tier-card-2,.tier-card-3{grid-column:span 6;margin-top:0}
  .tier-card-3{grid-column:span 12}
  .preview-grid{grid-template-columns:repeat(2,1fr)}
  .news-lead{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  h1{font-size:29px}
  h2{font-size:23px}
  .hero{padding:112px 0 56px}
  .hero::before{display:none}
  .hero-cta{gap:12px}
  .hero-stats{gap:28px}
  .stat-num{font-size:28px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .compare-wrap{display:none}
  .compare-tabs{display:block}
  .preview-grid{grid-template-columns:1fr}
  .news-row{grid-template-columns:1fr;gap:8px;padding:16px 4px}
  .news-row-title{white-space:normal;font-size:15px}
  .cta-band h2{font-size:26px}
  .cta-form{padding:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-name{font-size:16px}
  .btn{width:100%}
  .btn-sm{width:auto}
  .hero-cta .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .js .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg:#F6F3EE;
  --bg-alt:#EDE7DC;
  --bg-soft:#FAF7F2;
  --ink:#0F2E2A;
  --ink-2:#1E5148;
  --amber:#C97B2E;
  --amber-dark:#B0671F;
  --title:#10201D;
  --text:#3A4340;
  --muted:#6E7671;
  --line:#E4DDD0;
  --line-soft:#EAE4D8;
  --disabled:#DCD5C9;
  --success:#2F6B4E;
  --warn:#B4552B;
  --danger:#A33A2E;
  --r-sm:6px;
  --r-md:10px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,46,42,.06);
  --sh-2:0 14px 32px -14px rgba(15,46,42,.18);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,Consolas,"Courier New",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(--bg);color:var(--text);font-family:var(--font-sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
input{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:var(--r-sm)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* 进度条 */
.progress-bar{position:fixed;top:0;left:0;right:0;height:2px;background:var(--amber);transform:scaleX(0);transform-origin:0 50%;z-index:200;transition:transform .1s linear}

/* 头部 */
.site-header{position:sticky;top:0;z-index:120;background:rgba(246,243,238,.94);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:box-shadow .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease)}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1);background:rgba(246,243,238,.98)}
.header-inner{display:flex;align-items:center;gap:28px;height:76px;transition:height .24s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-serif);font-size:19px;font-weight:600;color:var(--title);letter-spacing:.01em;white-space:nowrap}
.brand-mark{width:32px;height:32px;display:grid;place-items:center;border:1px solid var(--line);border-radius:var(--r-sm);color:var(--ink-2);background:#fff;flex:0 0 auto}
.nav-desktop{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{position:relative;font-size:15px;color:var(--text);padding:6px 0;transition:color .16s var(--ease)}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--amber);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.menu-toggle{display:none;width:40px;height:40px;place-items:center;border:1px solid var(--line);border-radius:var(--r-sm);color:var(--ink);background:#fff;transition:border-color .16s var(--ease)}
.menu-toggle:hover{border-color:var(--amber)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:500;line-height:1;padding:14px 24px;border-radius:var(--r-pill);border:1px solid transparent;transition:transform .16s var(--ease),background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);cursor:pointer}
.btn:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn-primary{background:var(--amber);color:#FFF9F0;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--amber-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#F6F3EE;border-color:var(--ink)}
.btn-light{background:#F6F3EE;color:var(--ink);border-color:#F6F3EE}
.btn-light:hover{background:var(--amber);border-color:var(--amber);color:#FFF9F0;transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{opacity:.6;cursor:not-allowed;transform:none}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(15,46,42,.42);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:140}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:min(88vw,360px);background:var(--bg);border-left:1px solid var(--line);z-index:150;transform:translateX(102%);transition:transform .28s var(--ease);display:flex;flex-direction:column;padding:20px 24px 28px;overflow-y:auto}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-title{font-family:var(--font-serif);font-size:17px;color:var(--title)}
.drawer-close{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--line);border-radius:var(--r-sm)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;padding:18px 0;flex:1}
.drawer-nav a{position:relative;padding:14px 12px;font-size:17px;color:var(--text);border-radius:var(--r-sm);transition:background .16s var(--ease),color .16s var(--ease)}
.drawer-nav a:hover{background:var(--bg-alt);color:var(--ink)}
.drawer-nav a.is-active{color:var(--ink);font-weight:600;background:var(--bg-alt)}
.drawer-nav a.is-active::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:var(--amber);border-radius:2px}

/* 文章头部 */
.article-hero{position:relative;padding:34px 0 38px;border-bottom:1px solid var(--line);background-image:linear-gradient(rgba(246,243,238,.93),rgba(246,243,238,.99)),url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);font-family:var(--font-mono)}
.breadcrumb a{color:var(--muted);transition:color .16s var(--ease)}
.breadcrumb a:hover{color:var(--amber-dark)}
.breadcrumb .sep{color:var(--disabled)}
.breadcrumb .current{max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)}
.article-title{font-family:var(--font-serif);font-size:clamp(26px,3.6vw,38px);line-height:1.28;color:var(--title);letter-spacing:-.01em;margin:20px 0 0;max-width:900px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:18px;font-family:var(--font-mono);font-size:13px;color:var(--muted)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--disabled)}
.meta-badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);background:var(--bg-alt);color:var(--amber-dark);font-size:12px;letter-spacing:.08em}

/* 布局 */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;padding:52px 0 72px}
.article-main{min-width:0}
.side-sticky{display:flex;flex-direction:column;gap:24px}
.toc-col{display:none}

/* 目录 */
.toc-head{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase;padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:14px}
.toc-item{margin-bottom:10px}
.toc-item a{display:block;font-size:14px;line-height:1.6;color:var(--muted);border-left:2px solid transparent;padding-left:12px;transition:color .16s var(--ease),border-color .16s var(--ease)}
.toc-item a:hover{color:var(--ink)}
.toc-item a.is-current{color:var(--amber-dark);border-left-color:var(--amber);font-weight:500}
.toc-item-3{padding-left:12px}
.toc-item-3 a{font-size:13px}
.toc-mobile{border:1px solid var(--line);border-radius:var(--r-md);background:#fff;margin-bottom:28px;overflow:hidden}
.toc-mobile summary{list-style:none;cursor:pointer;padding:14px 18px;font-size:14px;font-weight:600;color:var(--ink);display:flex;align-items:center;justify-content:space-between}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:"";width:8px;height:8px;border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);transform:rotate(45deg);transition:transform .2s var(--ease)}
.toc-mobile[open] summary::after{transform:rotate(-135deg)}
.toc-mobile ol{padding:0 18px 16px}
.toc-mobile .toc-item a{padding-left:10px}

/* 正文 */
.article-body{font-size:17px;line-height:1.95;color:var(--text)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.6em}
.article-body h2{position:relative;font-family:var(--font-serif);font-size:26px;line-height:1.4;color:var(--title);margin:2.1em 0 .85em;padding-left:16px}
.article-body h2::before{content:"";position:absolute;left:0;top:.28em;width:3px;height:1em;background:var(--amber);border-radius:2px}
.article-body h3{font-size:18px;font-weight:600;letter-spacing:.05em;color:var(--ink-2);margin:1.9em 0 .7em}
.article-body h4{font-size:16px;font-weight:600;color:var(--title);margin:1.6em 0 .6em}
.article-body ul{margin:0 0 1.6em}
.article-body ul li{position:relative;padding-left:24px;margin-bottom:.6em}
.article-body ul li::before{content:"";position:absolute;left:6px;top:.72em;width:6px;height:6px;border:1.5px solid var(--amber);border-radius:1px;transform:rotate(45deg)}
.article-body ol{margin:0 0 1.6em;counter-reset:item}
.article-body ol li{position:relative;padding-left:34px;margin-bottom:.6em;counter-increment:item}
.article-body ol li::before{content:counter(item,decimal-leading-zero);position:absolute;left:0;top:0;font-family:var(--font-mono);font-size:13px;line-height:1.95;color:var(--amber)}
.article-body blockquote{margin:1.8em 0;padding:18px 22px;background:var(--bg-alt);border-left:3px solid var(--amber);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-2)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--ink-2);text-decoration:underline;text-decoration-color:var(--amber);text-underline-offset:3px;transition:color .16s var(--ease)}
.article-body a:hover{color:var(--amber-dark)}
.article-body strong{color:var(--title)}
.article-body img{border-radius:var(--r-md);border:1px solid var(--line);margin:1.6em auto}
.article-body figure{margin:1.8em 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:1.8em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--bg-alt);font-weight:600;color:var(--title);font-size:14px;letter-spacing:.04em}
.article-body pre{background:var(--ink);color:#F6F3EE;padding:18px 20px;border-radius:var(--r-md);overflow-x:auto;font-family:var(--font-mono);font-size:14px;line-height:1.7;margin:1.6em 0}
.article-body code{font-family:var(--font-mono);font-size:.92em;background:var(--bg-alt);padding:2px 6px;border-radius:var(--r-sm);color:var(--ink-2)}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

/* 空态 */
.empty-state{border:1px dashed var(--disabled);border-radius:var(--r-lg);padding:56px 32px;text-align:center;background:var(--bg-soft)}
.empty-state svg{color:var(--muted);margin:0 auto 18px}
.empty-title{font-family:var(--font-serif);font-size:20px;color:var(--title);margin-bottom:8px}
.empty-desc{font-size:14px;color:var(--muted);max-width:44ch;margin:0 auto 22px}

/* 标签与文末 */
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin:44px 0 0;padding-top:26px;border-top:1px solid var(--line)}
.tag{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r-pill);background:var(--bg-alt);font-size:12px;letter-spacing:.06em;color:var(--ink-2)}
.post-nav{display:grid;grid-template-columns:1fr;gap:16px;margin-top:36px}
.post-nav a{display:flex;flex-direction:column;gap:6px;padding:20px 22px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease)}
.post-nav a:hover{border-color:var(--amber);transform:translateY(-3px);box-shadow:var(--sh-2)}
.post-nav .nav-label{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--muted)}
.post-nav .nav-title{font-size:16px;font-weight:600;color:var(--title)}

/* 相关推荐 */
.related{margin-top:56px}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.related-head h2{font-family:var(--font-serif);font-size:22px;color:var(--title)}
.related-head a{font-size:14px;color:var(--amber-dark)}
.related-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:20px}
.rec-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;overflow:hidden;transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease)}
.rec-card:hover{border-color:var(--amber);transform:translateY(-3px);box-shadow:var(--sh-2)}
.rec-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.rec-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease)}
.rec-card:hover .thumb img{transform:scale(1.02)}
.rec-body{padding:18px 18px 20px}
.rec-body h3{font-size:16px;line-height:1.55;color:var(--title)}
.rec-time{margin-top:10px;font-family:var(--font-mono);font-size:12px;color:var(--muted)}
.back-row{margin-top:44px;display:flex;justify-content:flex-start}

/* 侧栏 */
.side-card{border:1px solid var(--line);border-radius:var(--r-md);background:#fff;padding:24px}
.side-card h3{font-family:var(--font-serif);font-size:17px;color:var(--title);margin-bottom:8px}
.side-card p{font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:16px}
.side-list li{margin-bottom:14px}
.side-tier{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border:1px solid var(--line-soft);border-radius:var(--r-sm);margin-bottom:10px}
.side-tier span{font-size:14px;color:var(--text)}
.side-tier strong{font-family:var(--font-mono);font-size:14px;color:var(--amber-dark)}
.hot-list li:not(:last-child){border-bottom:1px solid var(--line-soft)}
.hot-list a{display:flex;gap:12px;padding:12px 0;font-size:14px;line-height:1.6;color:var(--text);transition:color .16s var(--ease)}
.hot-list a:hover{color:var(--amber-dark)}
.hot-list .idx{font-family:var(--font-mono);font-size:12px;color:var(--disabled);flex:0 0 auto;padding-top:2px}

/* CTA */
.cta-strip{margin-top:40px;background:var(--ink);color:#F6F3EE;padding:72px 0;position:relative;overflow:hidden}
.cta-strip::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(246,243,238,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(246,243,238,.05) 1px,transparent 1px);background-size:48px 48px;pointer-events:none}
.cta-inner{position:relative;display:grid;grid-template-columns:minmax(0,1fr);gap:36px;align-items:center}
.cta-copy h2{font-family:var(--font-serif);font-size:clamp(24px,3vw,32px);line-height:1.35;color:#F6F3EE;margin-bottom:14px}
.cta-copy p{font-size:15px;line-height:1.85;color:rgba(246,243,238,.76);max-width:52ch}
.cta-form{display:flex;flex-wrap:wrap;gap:12px}
.cta-form input{flex:1 1 220px;height:48px;padding:0 16px;border-radius:var(--r-pill);border:1px solid rgba(246,243,238,.28);background:rgba(246,243,238,.06);color:#F6F3EE;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.cta-form input::placeholder{color:rgba(246,243,238,.5)}
.cta-form input:focus{border-color:var(--amber);box-shadow:0 0 0 3px rgba(201,123,46,.22);outline:none}
.form-note{width:100%;font-size:12.5px;color:rgba(246,243,238,.6);margin-top:2px}
.form-msg{width:100%;font-size:13px;color:var(--amber);min-height:18px}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(246,243,238,.78);padding:68px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:var(--font-serif);font-size:18px;color:#F6F3EE;margin-bottom:14px}
.footer-brand .brand-mark{background:transparent;border-color:rgba(246,243,238,.24);color:#F6F3EE}
.footer-about{font-size:14px;line-height:1.85;color:rgba(246,243,238,.66);max-width:40ch}
.footer-col h4{font-size:14px;font-weight:600;color:#F6F3EE;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(246,243,238,.72);transition:color .16s var(--ease),text-decoration-color .16s var(--ease)}
.footer-col a{text-decoration:underline;text-decoration-color:transparent;text-underline-offset:3px}
.footer-col a:hover{color:var(--amber);text-decoration-color:var(--amber)}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid rgba(246,243,238,.16);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:rgba(246,243,238,.58);font-family:var(--font-mono)}

/* 回到顶部 */
.to-top{position:fixed;right:24px;bottom:28px;width:44px;height:44px;display:grid;place-items:center;border-radius:50%;background:#fff;border:1px solid var(--line);color:var(--ink);box-shadow:var(--sh-1);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease),border-color .16s var(--ease);z-index:110}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--amber);color:var(--amber-dark)}

/* 入场 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (min-width:520px){
  .post-nav{grid-template-columns:1fr 1fr}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
  .cta-inner{grid-template-columns:1.05fr .95fr;gap:48px}
}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:44px}
  .related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (min-width:1280px){
  .article-layout{grid-template-columns:180px minmax(0,1fr) 280px;gap:32px}
  .toc-col{display:block;position:sticky;top:96px;align-self:start;max-height:calc(100vh - 130px);overflow-y:auto}
  .toc-mobile{display:none}
}
@media (max-width:1023px){
  .side-sticky{position:static}
  .side-col{margin-top:8px}
}
@media (max-width:1023px) and (min-width:768px){
  .article-layout{padding-top:44px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .nav-desktop{display:none}
  .menu-toggle{display:grid}
  .header-inner{height:64px;gap:16px}
  .brand{font-size:17px}
  .brand-mark{width:28px;height:28px}
  .header-actions .btn-sm{display:none}
  .article-layout{padding:36px 0 56px;gap:36px}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:22px}
  .cta-strip{padding:52px 0}
  .site-footer{padding:52px 0 24px}
  .to-top{right:16px;bottom:18px}
}
@media (max-width:480px){
  .btn{padding:13px 20px;font-size:14.5px}
  .btn-sm{padding:10px 16px}
  .cta-form input{flex:1 1 100%}
  .cta-form .btn{width:100%}
  .article-title{font-size:24px}
  .breadcrumb .current{max-width:38ch}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
/* ============================================================
   设计变量
   ============================================================ */
:root{
  --bg:#F6F3EE;
  --bg-alt:#EDE7DC;
  --ink:#0F2E2A;
  --cloud:#1E5148;
  --amber:#C97B2E;
  --amber-dark:#B0671F;
  --text:#10201D;
  --body-text:#3A4340;
  --muted:#6E7671;
  --line:#E4DDD0;
  --line-soft:#EAE4D8;
  --disabled:#DCD5C9;
  --success:#2F6B4E;
  --warn:#B4552B;
  --error:#A33A2E;
  --white:#FFFFFF;
  --cream:#FBF6EE;

  --radius-sm:6px;
  --radius-md:10px;
  --radius-lg:16px;
  --radius-pill:999px;

  --shadow-1:0 1px 2px rgba(15,46,42,.06);
  --shadow-2:0 14px 32px -14px rgba(15,46,42,.18);

  --header-h:72px;
  --ease:cubic-bezier(.22,.61,.36,1);

  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Consolas,monospace;
}

/* ============================================================
   基础重置
   ============================================================ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--body-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--text);margin:0;font-weight:600;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
svg{display:block;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:4px;}
.visually-hidden{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ============================================================
   布局容器与板块
   ============================================================ */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:var(--bg-alt);}
.sec-head{max-width:760px;margin-bottom:48px;}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--amber);margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:22px;height:1px;background:var(--amber);display:block;
}
.sec-head h2{font-size:30px;line-height:1.3;}
.sec-head .sec-sub{margin-top:14px;font-size:15px;color:var(--muted);line-height:1.8;}

/* ============================================================
   按钮
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background-color 240ms var(--ease),color 240ms var(--ease),
             border-color 240ms var(--ease),transform 160ms var(--ease),
             box-shadow 240ms var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--amber);color:var(--white);border-color:var(--amber);}
.btn-primary:hover{background:var(--amber-dark);border-color:var(--amber-dark);transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--bg);transform:translateY(-1px);}
.btn-on-dark{background:transparent;color:var(--bg);border-color:rgba(246,243,238,.5);}
.btn-on-dark:hover{background:var(--bg);color:var(--ink);border-color:var(--bg);transform:translateY(-1px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.5;cursor:not-allowed;}

/* ============================================================
   顶部导航
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;gap:32px;
  height:var(--header-h);
}
.brand{
  display:flex;align-items:center;gap:10px;flex-shrink:0;
}
.brand-mark{
  width:32px;height:32px;flex-shrink:0;
  display:grid;place-items:center;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:var(--white);
  color:var(--amber);
}
.brand-name{
  font-family:var(--font-serif);
  font-size:19px;font-weight:600;color:var(--ink);
  letter-spacing:-.01em;white-space:nowrap;
}
.nav-desktop{
  display:flex;align-items:center;gap:28px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  font-size:15px;color:var(--body-text);
  padding:6px 2px;
  transition:color 200ms var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--amber);transform:scaleX(0);transform-origin:left;
  transition:transform 240ms var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{
  display:flex;align-items:center;gap:12px;
  margin-left:28px;flex-shrink:0;
}
.menu-toggle{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  color:var(--ink);
  align-items:center;justify-content:center;
  transition:border-color 200ms var(--ease),background-color 200ms var(--ease);
}
.menu-toggle:hover{border-color:var(--amber);color:var(--amber);}

/* 移动端抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:100;
  width:min(86vw,360px);
  background:var(--bg);
  border-left:1px solid var(--line);
  padding:24px;
  display:flex;flex-direction:column;gap:28px;
  transform:translateX(102%);
  transition:transform 240ms var(--ease);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  position:relative;
  padding:16px 12px;
  font-family:var(--font-serif);
  font-size:19px;color:var(--text);
  border-bottom:1px solid var(--line-soft);
  transition:color 200ms var(--ease),padding-left 200ms var(--ease);
}
.drawer-nav a::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  background:var(--amber);transform:scaleY(0);transform-origin:top;
  transition:transform 240ms var(--ease);
}
.drawer-nav a:hover{color:var(--amber);}
.drawer-nav a.is-active{color:var(--ink);font-weight:600;}
.drawer-nav a.is-active::before{transform:scaleY(1);}
.drawer-close{
  width:40px;height:40px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:var(--radius-md);color:var(--ink);
}
.drawer-foot{margin-top:auto;}
.drawer-mask{
  position:fixed;inset:0;z-index:90;
  background:rgba(15,46,42,.45);
  opacity:0;visibility:hidden;
  transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
body.no-scroll{overflow:hidden;}

/* ============================================================
   分类页小 Hero
   ============================================================ */
.cat-hero{
  position:relative;
  overflow:hidden;
  display:flex;align-items:center;
  min-height:280px;
  padding:64px 0;
  background-image:
    linear-gradient(90deg,rgba(15,46,42,.94) 0%,rgba(15,46,42,.82) 52%,rgba(15,46,42,.52) 100%),
    url(/assets/images/backpic/back-1.png);
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-hero::after{
  content:"";position:absolute;right:6%;bottom:-170px;
  width:340px;height:340px;border-radius:50%;
  border:1px solid rgba(201,123,46,.42);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.crumbs{
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:rgba(246,243,238,.72);
  margin-bottom:20px;flex-wrap:wrap;
}
.crumbs a{transition:color 200ms var(--ease);}
.crumbs a:hover{color:var(--amber);}
.crumb-sep{opacity:.5;}
.crumbs [aria-current="page"]{color:var(--bg);}
.hero-title{
  font-size:40px;line-height:1.2;color:var(--bg);
  max-width:760px;
}
.hero-lead{
  margin-top:18px;max-width:640px;
  font-size:16px;line-height:1.85;color:rgba(246,243,238,.82);
}
.hero-actions{display:flex;gap:16px;margin-top:32px;flex-wrap:wrap;}

/* ============================================================
   锚点胶囊导航
   ============================================================ */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow 240ms var(--ease);
}
.anchor-bar.is-stuck{box-shadow:var(--shadow-1);}
.anchor-inner{
  display:flex;align-items:center;gap:10px;
  padding:14px 0;overflow-x:auto;
  scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-link{
  white-space:nowrap;
  padding:8px 18px;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  font-size:14px;color:var(--body-text);
  transition:border-color 200ms var(--ease),color 200ms var(--ease),
             background-color 200ms var(--ease);
}
.anchor-link:hover{border-color:var(--amber);color:var(--amber);}
.anchor-link.is-current{background:var(--ink);border-color:var(--ink);color:var(--bg);}

/* ============================================================
   数据概览条
   ============================================================ */
.stat-band{padding:56px 0;border-bottom:1px solid var(--line);}
.stat-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.stat{
  padding:24px 26px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease),transform 240ms var(--ease);
}
.stat:hover{border-color:var(--amber);box-shadow:var(--shadow-2);transform:translateY(-3px);}
.stat-num{
  display:block;
  font-family:var(--font-mono);
  font-size:36px;font-weight:600;line-height:1.1;
  color:var(--amber);
}
.stat-label{
  display:block;margin-top:10px;
  font-size:13px;color:var(--muted);letter-spacing:.02em;
}

/* ============================================================
   权益对比表
   ============================================================ */
.table-scroll{
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--white);
  overflow-x:auto;
}
.tier-table{min-width:760px;}
.tier-table th,
.tier-table td{
  padding:16px 18px;
  text-align:left;
  font-size:15px;
  border-bottom:1px solid var(--line-soft);
  vertical-align:middle;
}
.tier-table thead th{
  font-family:var(--font-sans);
  font-size:13px;letter-spacing:.08em;
  color:var(--ink);font-weight:600;
  background:var(--bg-alt);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:2;
}
.tier-table thead th:first-child{
  position:sticky;left:0;z-index:3;
  background:var(--bg-alt);
}
.tier-table tbody th{
  font-weight:600;color:var(--text);
  position:sticky;left:0;
  background:var(--white);
  z-index:1;
  white-space:nowrap;
}
.tier-table tbody tr{transition:background-color 200ms var(--ease);}
.tier-table tbody tr:hover{background:#FAF7F2;}
.tier-table tbody tr:hover th{background:#FAF7F2;}
.tier-table tbody tr:last-child th,
.tier-table tbody tr:last-child td{border-bottom:0;}
.col-reco{
  background:var(--cream);
  border-left:1.5px solid var(--amber);
  border-right:1.5px solid var(--amber);
}
.tier-table tbody tr:last-child .col-reco{border-bottom:1.5px solid var(--amber);}
.tier-table thead th.col-reco{border-top:1.5px solid var(--amber);}
.tag-reco{
  display:inline-block;margin-left:8px;
  padding:2px 9px;border-radius:var(--radius-pill);
  background:var(--amber);color:var(--white);
  font-size:11px;letter-spacing:.06em;font-weight:600;
  vertical-align:middle;
}
.mark{
  display:inline-grid;place-items:center;
  width:22px;height:22px;border-radius:50%;
  border:1px solid var(--success);color:var(--success);
}
.mark--no{border-color:var(--disabled);color:var(--disabled);}
.cell-with-mark{display:flex;align-items:center;gap:10px;}
.cell-note{color:var(--muted);font-size:14px;}

/* 移动端档位 Tab */
.tier-tabs{display:none;}
.tab-btns{
  display:flex;gap:10px;overflow-x:auto;padding-bottom:4px;
  scrollbar-width:none;
}
.tab-btns::-webkit-scrollbar{display:none;}
.tab-btn{
  white-space:nowrap;
  padding:9px 20px;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  font-size:14px;color:var(--body-text);
  background:var(--white);
  transition:all 200ms var(--ease);
}
.tab-btn.is-active{
  background:var(--ink);border-color:var(--ink);color:var(--bg);font-weight:600;
}
.tab-panel{display:none;margin-top:20px;}
.tab-panel.is-active{display:block;}
.tier-list{
  border:1px solid var(--line);border-radius:var(--radius-md);
  background:var(--white);padding:6px 18px;
}
.tier-list li{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:13px 0;
  border-bottom:1px dashed var(--line-soft);
  font-size:15px;
}
.tier-list li:last-child{border-bottom:0;}
.tier-item-name{font-weight:600;color:var(--text);}
.tier-item-val{color:var(--muted);font-size:14px;text-align:right;}
.tier-item-val.is-on{color:var(--success);}
.tier-item-val.is-off{color:var(--disabled);}

/* ============================================================
   错落说明卡
   ============================================================ */
.stagger-grid{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:32px;align-items:start;
}
.stagger-grid > :nth-child(2){margin-top:64px;}
.info-card{
  padding:36px 32px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
  transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease),transform 240ms var(--ease);
}
.info-card:hover{border-color:var(--amber);box-shadow:var(--shadow-2);transform:translateY(-3px);}
.info-card .card-index{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.14em;color:var(--amber);
}
.info-card h3{margin-top:12px;font-size:20px;line-height:1.4;}
.info-card p{margin-top:14px;font-size:15px;color:var(--muted);}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:14px;}
.point-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--body-text);
}
.point-list li svg{flex-shrink:0;margin-top:6px;color:var(--amber);}
.card-link{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:26px;font-size:14px;font-weight:600;color:var(--amber);
}
.card-link svg{transition:transform 240ms var(--ease);}
.card-link:hover svg{transform:translateX(4px);}

/* ============================================================
   核对清单
   ============================================================ */
.check-layout{
  display:grid;grid-template-columns:340px 1fr;gap:64px;align-items:start;
}
.check-aside{position:sticky;top:calc(var(--header-h) + 96px);}
.check-aside h2{font-size:30px;line-height:1.3;}
.check-aside p{margin-top:16px;font-size:15px;color:var(--muted);}
.check-list{border-top:1px solid var(--line);}
.check-list li{
  display:grid;grid-template-columns:72px 1fr;gap:24px;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:background-color 200ms var(--ease);
}
.check-list li:hover{background:#FAF7F2;}
.check-num{
  font-family:var(--font-mono);
  font-size:22px;font-weight:600;color:var(--amber);line-height:1.4;
}
.check-body h3{font-size:17px;line-height:1.5;font-family:var(--font-sans);font-weight:600;}
.check-body p{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.8;}

/* ============================================================
   CTA 区块
   ============================================================ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink);
  color:var(--bg);
  padding:96px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(246,243,238,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(246,243,238,.045) 1px,transparent 1px);
  background-size:56px 56px;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr auto;gap:48px;align-items:center;}
.cta-inner h2{color:var(--bg);font-size:32px;line-height:1.3;max-width:560px;}
.cta-inner p{margin-top:16px;font-size:15px;color:rgba(246,243,238,.76);max-width:560px;}
.cta-actions{display:flex;gap:16px;flex-wrap:wrap;}
.cta-note{
  position:relative;z-index:2;
  margin-top:40px;padding-top:22px;
  border-top:1px solid rgba(246,243,238,.16);
  font-size:13px;color:rgba(246,243,238,.6);
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  background:var(--ink);
  color:rgba(246,243,238,.78);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:48px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-serif);
  font-size:18px;color:var(--bg);font-weight:600;
}
.footer-brand .brand-mark{
  background:transparent;border-color:rgba(246,243,238,.24);color:var(--amber);
}
.footer-about{
  margin-top:18px;font-size:14px;line-height:1.85;
  color:rgba(246,243,238,.62);max-width:320px;
}
.footer-col h4{
  color:var(--bg);font-size:15px;font-family:var(--font-sans);
  font-weight:600;margin-bottom:18px;letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col li{font-size:14px;color:rgba(246,243,238,.62);}
.footer-col a{
  position:relative;
  transition:color 200ms var(--ease);
}
.footer-col a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;
  background:var(--amber);transform:scaleX(0);transform-origin:left;
  transition:transform 240ms var(--ease);
}
.footer-col a:hover{color:var(--amber);}
.footer-col a:hover::after{transform:scaleX(1);}
.footer-bottom{
  margin-top:56px;
  padding:22px 0;
  border-top:1px solid rgba(246,243,238,.16);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(246,243,238,.52);
}

/* ============================================================
   入场动效
   ============================================================ */
.js .reveal{
  opacity:0;transform:translateY(12px);
  transition:opacity 420ms var(--ease),transform 420ms var(--ease);
}
.js .reveal.is-visible{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
  .js .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ============================================================
   响应式断点
   ============================================================ */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .nav-desktop{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-actions{margin-left:auto;}
  .stagger-grid{grid-template-columns:1fr;gap:24px;}
  .stagger-grid > :nth-child(2){margin-top:0;}
  .check-layout{grid-template-columns:1fr;gap:32px;}
  .check-aside{position:static;}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}

@media (max-width:768px){
  :root{--header-h:64px;}
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .cat-hero{padding:48px 0;min-height:240px;}
  .cat-hero::after{display:none;}
  .hero-title{font-size:29px;}
  .hero-lead{font-size:15px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .sec-head h2{font-size:24px;}
  .sec-head{margin-bottom:32px;}
  .stat-grid{grid-template-columns:1fr;}
  .table-scroll{display:none;}
  .tier-tabs{display:block;}
  .check-list li{grid-template-columns:52px 1fr;gap:16px;padding:22px 0;}
  .check-num{font-size:18px;}
  .cta-band{padding:64px 0;}
  .cta-inner h2{font-size:24px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:34px;}
  .footer-about{max-width:none;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

@media (max-width:520px){
  .hero-title{font-size:25px;}
  .brand-name{font-size:17px;}
  .stat{padding:20px 20px;}
  .stat-num{font-size:30px;}
  .info-card{padding:26px 22px;}
  .anchor-link{padding:7px 14px;font-size:13px;}
  .check-aside h2{font-size:23px;}
}

/* roulang page: category3 */
:root{
  --bg:#F6F3EE;
  --bg-2:#EDE7DC;
  --ink:#0F2E2A;
  --ink-2:#1E5148;
  --amber:#C97B2E;
  --amber-d:#B0671F;
  --text:#10201D;
  --body:#3A4340;
  --muted:#6E7671;
  --line:#E4DDD0;
  --line-2:#EAE4D8;
  --disabled:#DCD5C9;
  --card:#FFFFFF;
  --success:#2F6B4E;
  --warning:#B4552B;
  --error:#A33A2E;
  --r-xs:6px;
  --r-sm:8px;
  --r-md:10px;
  --r-lg:16px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,46,42,.06);
  --shadow-2:0 14px 32px -14px rgba(15,46,42,.18);
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:76px;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--serif);color:var(--text);margin:0;font-weight:700;line-height:1.3;}
h1{font-size:40px;line-height:1.2;}
h2{font-size:30px;}
h3{font-size:20px;line-height:1.4;}
h4{font-size:16px;line-height:1.5;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--ink-2);text-decoration:none;transition:color .16s var(--ease);}
a:hover{color:var(--amber-d);}
img{max-width:100%;display:block;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
::selection{background:rgba(201,123,46,.22);}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--mono);}
.muted{color:var(--muted);}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:76px;
  background:rgba(246,243,238,.86);
  border-bottom:1px solid transparent;
  transition:height .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(246,243,238,.97);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{display:flex;align-items:center;gap:24px;height:100%;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:32px;height:32px;border:1px solid var(--line);border-radius:var(--r-sm);
  display:grid;place-items:center;color:var(--amber);background:#fff;flex:0 0 auto;
}
.brand-name{font-family:var(--serif);font-size:19px;font-weight:700;letter-spacing:.01em;}
.nav-desktop{display:flex;align-items:center;justify-content:center;gap:26px;flex:1 1 auto;}
.nav-link{
  position:relative;font-size:15px;color:var(--body);padding:6px 2px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--amber);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.menu-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-sm);
  align-items:center;justify-content:center;color:var(--ink);background:#fff;
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.menu-toggle:hover{border-color:var(--amber);color:var(--amber-d);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background-size .24s var(--ease),transform .16s var(--ease),border-color .16s var(--ease),background-color .16s var(--ease),color .16s var(--ease),box-shadow .16s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  color:#FFF9F0;background-color:var(--amber);
  background-image:linear-gradient(90deg,var(--amber-d),var(--amber-d));
  background-repeat:no-repeat;background-size:0% 100%;
}
.btn-primary:hover{background-size:100% 100%;transform:translateY(-1px);color:#FFF9F0;}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:#F6F3EE;transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:13px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.5;cursor:not-allowed;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;
  padding:3px 10px;border-radius:var(--r-pill);
  background:var(--bg-2);color:var(--ink-2);border:1px solid transparent;
}
.badge-amber{background:#FBF6EE;color:var(--amber-d);border-color:rgba(201,123,46,.32);}
.badge-line{background:#fff;border-color:var(--line);color:var(--muted);}

/* ---------- breadcrumb ---------- */
.crumb{padding:24px 0 0;font-size:13px;color:var(--muted);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--disabled);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--amber-d);}
.crumb .is-now{color:var(--ink);font-weight:600;}

/* ---------- page hero ---------- */
.page-hero{padding:20px 0 48px;}
.hero-shell{
  position:relative;overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--line);
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.hero-shell::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(246,243,238,.97) 0%,rgba(246,243,238,.9) 52%,rgba(246,243,238,.5) 100%);
}
.hero-shell::before{
  content:"";position:absolute;left:-40px;top:-70px;width:320px;height:320px;
  border:1px solid rgba(201,123,46,.3);border-radius:50%;opacity:.5;z-index:0;
}
.hero-content{position:relative;z-index:1;padding:56px 48px;max-width:760px;}
.hero-kicker{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.hero-content h1{margin-bottom:16px;}
.hero-lead{font-size:17px;line-height:1.9;color:var(--body);margin-bottom:24px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 28px;font-size:13px;color:var(--muted);}
.hero-meta span{display:flex;align-items:center;gap:8px;}
.hero-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--amber);flex:0 0 auto;}

/* ---------- anchor bar ---------- */
.anchor-bar{
  position:sticky;top:76px;z-index:40;
  background:rgba(246,243,238,.94);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.anchor-bar.is-stuck{border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.anchor-list{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none;}
.anchor-list::-webkit-scrollbar{display:none;}
.anchor-pill{
  flex:0 0 auto;padding:8px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;color:var(--body);
  font-size:13px;white-space:nowrap;transition:all .16s var(--ease);
}
.anchor-pill:hover{border-color:var(--amber);color:var(--amber-d);transform:translateY(-1px);}
.anchor-pill.is-current{background:#FBF6EE;border-color:rgba(201,123,46,.4);color:var(--amber-d);font-weight:600;}

/* ---------- sections ---------- */
.section{padding:82px 0;}
.section-alt{background:var(--bg-2);}
.section-head{max-width:660px;margin-bottom:44px;}
.section-head .eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--amber);margin-bottom:12px;display:block;
}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:15px;line-height:1.9;color:var(--muted);}

/* ---------- resource layout ---------- */
.resource-layout{display:grid;grid-template-columns:264px minmax(0,1fr);gap:40px;align-items:start;}
.index-panel{
  position:sticky;top:150px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 20px;box-shadow:var(--shadow-1);
}
.index-panel h3{font-size:15px;margin-bottom:6px;}
.index-panel .index-sub{font-size:12.5px;color:var(--muted);margin-bottom:14px;}
.index-list{display:grid;gap:2px;}
.index-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 8px;border-radius:var(--r-xs);
  font-size:14px;color:var(--body);
  border-left:2px solid transparent;
  transition:background .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease);
}
.index-link .idx{font-family:var(--mono);font-size:11px;color:var(--disabled);}
.index-link:hover{background:#FAF7F2;color:var(--amber-d);}
.index-link.is-current{background:#FBF6EE;bordercolor:var(--amber);border-left-color:var(--amber);color:var(--amber-d);font-weight:600;}
.index-link.is-current .idx{color:var(--amber);}

.resource-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.res-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  color:inherit;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.res-card:hover{transform:translateY(-3px);border-color:var(--amber);box-shadow:var(--shadow-2);color:inherit;}
.res-card figure{margin:0;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2);}
.res-card img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease);}
.res-card:hover img{transform:scale(1.02);}
.res-body{display:flex;flex-direction:column;gap:12px;padding:20px 20px 22px;flex:1;}
.res-body h3{font-size:18px;line-height:1.4;}
.res-points{display:grid;gap:8px;}
.res-points li{position:relative;padding-left:18px;font-size:13.5px;line-height:1.7;color:var(--muted);}
.res-points li::before{content:"";position:absolute;left:0;top:10px;width:9px;height:1.5px;background:var(--amber);}
.res-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line-2);
  font-size:12.5px;color:var(--muted);
}
.res-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--ink-2);}
.res-card:hover .res-arrow{color:var(--amber-d);}

/* ---------- spec list ---------- */
.spec-list{border-top:1px solid var(--line);}
.spec-row{
  display:grid;grid-template-columns:64px minmax(0,1fr) 190px 130px;
  gap:24px;align-items:center;
  padding:22px 12px;border-bottom:1px solid var(--line);
  transition:background .16s var(--ease);
}
.spec-row:hover{background:#FAF7F2;}
.spec-no{font-family:var(--mono);font-size:15px;color:var(--amber);}
.spec-main h3{font-size:17px;margin-bottom:4px;}
.spec-main p{font-size:13.5px;color:var(--muted);line-height:1.7;}
.spec-tag{font-size:13px;color:var(--ink-2);}
.spec-link{font-size:13px;font-weight:600;color:var(--ink-2);display:inline-flex;align-items:center;gap:6px;}
.spec-row:hover .spec-link{color:var(--amber-d);}

/* ---------- steps ---------- */
.step-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.step-card:hover{transform:translateY(-3px);border-color:var(--amber);box-shadow:var(--shadow-2);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;
  border:1px solid rgba(201,123,46,.45);color:var(--amber);
  font-family:var(--mono);font-size:14px;margin-bottom:16px;
}
.step-card h3{font-size:17px;margin-bottom:10px;}
.step-card p{font-size:14px;line-height:1.85;color:var(--muted);}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0 20px 0;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);font-family:var(--serif);
  position:relative;transition:color .16s var(--ease),padding .24s var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:-16px;top:22px;width:3px;height:18px;background:var(--amber);
  opacity:0;transition:opacity .24s var(--ease);
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-q:hover{color:var(--amber-d);}
.faq-icon{flex:0 0 auto;color:var(--muted);transition:transform .24s var(--ease),color .24s var(--ease);}
.faq-item.is-open .faq-icon{transform:rotate(180deg);color:var(--amber);}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .24s var(--ease),opacity .24s var(--ease);}
.faq-item.is-open .faq-a{opacity:1;}
.faq-a p{padding:0 40px 22px 0;font-size:15px;line-height:1.85;color:var(--muted);}

/* ---------- cta banner ---------- */
.cta-band{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta-inner{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:48px;align-items:center;padding:64px 0;
}
.cta-inner h2{margin-bottom:14px;}
.cta-inner p{font-size:15px;line-height:1.9;color:var(--muted);}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-note{margin-top:16px;font-size:12.5px;color:var(--muted);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(246,243,238,.82);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#F6F3EE;font-family:var(--serif);font-size:18px;font-weight:700;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(246,243,238,.06);border-color:rgba(246,243,238,.2);color:var(--amber);}
.footer-about{font-size:13.5px;line-height:1.9;color:rgba(246,243,238,.66);max-width:320px;}
.footer-col h4{color:#F6F3EE;font-family:var(--sans);font-size:14px;letter-spacing:.04em;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col span{font-size:13.5px;color:rgba(246,243,238,.72);}
.footer-col a:hover{color:var(--amber);text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  border-top:1px solid rgba(246,243,238,.16);
  padding:20px 0 26px;font-size:12.5px;color:rgba(246,243,238,.56);
}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(15,46,42,.42);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;z-index:70;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);z-index:80;
  background:var(--bg);box-shadow:var(--shadow-2);
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:20px 22px;border-bottom:1px solid var(--line);}
.drawer-nav{display:grid;gap:2px;padding:18px 12px;overflow-y:auto;flex:1;}
.drawer-link{
  display:block;padding:14px 14px;border-radius:var(--r-sm);
  font-size:16px;color:var(--body);border-left:3px solid transparent;
}
.drawer-link:hover{background:#FAF7F2;color:var(--amber-d);}
.drawer-link.is-active{border-left-color:var(--amber);background:#FBF6EE;color:var(--ink);font-weight:600;}
.drawer-foot{padding:18px 22px 26px;border-top:1px solid var(--line);}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;display:grid;place-items:center;color:var(--ink);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  h1{font-size:34px;}
  h2{font-size:26px;}
  .resource-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .index-panel{display:none;}
  .spec-row{grid-template-columns:52px minmax(0,1fr);row-gap:8px;}
  .spec-tag,.spec-link{grid-column:2;}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:28px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  body{padding-top:66px;font-size:15.5px;}
  .site-header{height:66px;}
  .site-header.is-scrolled{height:60px;}
  .nav-desktop{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-actions .btn-primary{display:none;}
  .anchor-bar{top:66px;}
  .section{padding:56px 0;}
  .page-hero{padding:8px 0 32px;}
  .hero-content{padding:36px 24px;}
  .hero-lead{font-size:15.5px;}
  .resource-grid{grid-template-columns:minmax(0,1fr);}
  .step-grid{grid-template-columns:minmax(0,1fr);}
  .faq-q{font-size:16px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-about{max-width:none;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  h1{font-size:27px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .hero-content{padding:28px 18px;}
  .btn{padding:12px 18px;font-size:13.5px;}
  .btn-block,.cta-actions .btn{width:100%;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .spec-row{padding:18px 8px;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg:#F6F3EE;
  --bg-alt:#EDE7DC;
  --surface:#FFFFFF;
  --ink:#0F2E2A;
  --cloud:#1E5148;
  --amber:#C97B2E;
  --amber-deep:#B0671F;
  --text:#10201D;
  --body:#3A4340;
  --muted:#6E7671;
  --line:#E4DDD0;
  --line-soft:#EAE4D8;
  --disabled:#DCD5C9;
  --ok:#2F6B4E;
  --warn:#B4552B;
  --err:#A33A2E;

  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Consolas,"Courier New",monospace;

  --r-sm:6px;
  --r-md:10px;
  --r-lg:16px;
  --r-pill:999px;

  --l1:0 1px 2px rgba(15,46,42,.06);
  --l2:0 14px 32px -14px rgba(15,46,42,.18);

  --header-h:76px;
  --header-h-sm:60px;
  --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;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  margin:0;
  font-family:var(--serif);
  font-weight:600;
  color:var(--text);
  line-height:1.3;
  letter-spacing:.01em;
}
h1{font-size:clamp(28px,4.2vw,40px);line-height:1.22;}
h2{font-size:clamp(24px,3vw,30px);}
h3{font-size:20px;line-height:1.4;}
h4{font-size:16px;line-height:1.5;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;height:auto;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
::selection{background:rgba(201,123,46,.22);}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--bg);
  border-bottom:1px solid transparent;
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:var(--l1);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:var(--header-h);
  transition:height .24s var(--ease);
}
.site-header.is-scrolled .header-inner{height:var(--header-h-sm);}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:32px;
  height:32px;
  display:grid;
  place-items:center;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  color:var(--amber);
  background:var(--surface);
}
.brand-name{
  font-family:var(--serif);
  font-size:18px;
  font-weight:600;
  color:var(--ink);
  letter-spacing:.02em;
}
.nav-desktop{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  padding:10px 12px;
  font-size:15px;
  color:var(--body);
  border-radius:var(--r-sm);
  transition:color .16s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:4px;
  height:2px;
  background:var(--amber);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after,
.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.menu-toggle{
  display:none;
  width:40px;
  height:40px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  align-items:center;
  justify-content:center;
  color:var(--ink);
  background:var(--surface);
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.menu-toggle:hover{border-color:var(--amber);color:var(--amber);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  position:relative;
  overflow:hidden;
  transition:transform .16s var(--ease),background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
.btn-primary{
  background:var(--amber);
  color:#FFF9F1;
  border-color:var(--amber);
}
.btn-primary:hover{
  background:var(--amber-deep);
  border-color:var(--amber-deep);
  transform:translateY(-1px);
  box-shadow:var(--l2);
}
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--line);
}
.btn-ghost:hover{
  background:var(--ink);
  color:var(--bg);
  border-color:var(--ink);
  transform:translateY(-1px);
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-lg{padding:15px 34px;font-size:16px;}
.btn-block{width:100%;}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;
  inset:0;
  z-index:120;
  background:rgba(15,46,42,.42);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;
  inset:0 0 0 auto;
  width:min(360px,86vw);
  background:var(--bg);
  display:flex;
  flex-direction:column;
  padding:20px 20px 28px;
  transform:translateX(24px);
  transition:transform .24s var(--ease);
}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:36px;height:36px;
  display:grid;place-items:center;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  color:var(--ink);
  background:var(--surface);
}
.drawer-nav{
  display:flex;
  flex-direction:column;
  gap:2px;
  padding:20px 0;
  flex:1;
}
.drawer-nav a{
  position:relative;
  padding:14px 12px 14px 16px;
  font-size:18px;
  font-family:var(--serif);
  color:var(--body);
  border-radius:var(--r-sm);
  transition:background-color .16s var(--ease),color .16s var(--ease);
}
.drawer-nav a::before{
  content:"";
  position:absolute;
  left:0;
  top:14px;
  bottom:14px;
  width:3px;
  border-radius:2px;
  background:transparent;
}
.drawer-nav a:hover{background:var(--bg-alt);color:var(--ink);}
.drawer-nav a.is-active{color:var(--ink);font-weight:600;}
.drawer-nav a.is-active::before{background:var(--amber);}
.drawer-foot{padding-top:16px;border-top:1px solid var(--line);}

/* ---------- 内页首屏 ---------- */
.page-hero{
  position:relative;
  background:var(--ink);
  color:var(--bg);
  overflow:hidden;
}
.page-hero .hero-bg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.26;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right,rgba(246,243,238,.05) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(246,243,238,.05) 1px,transparent 1px);
  background-size:72px 72px;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  padding:72px 24px 64px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:rgba(246,243,238,.68);
  margin-bottom:24px;
}
.breadcrumb a{
  color:rgba(246,243,238,.82);
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.breadcrumb a:hover{color:var(--amber);border-bottom-color:var(--amber);}
.breadcrumb .sep{color:rgba(246,243,238,.4);}
.breadcrumb .current{color:var(--bg);}
.page-hero h1{
  color:#FBF8F3;
  max-width:820px;
  margin-bottom:20px;
}
.hero-lead{
  max-width:660px;
  font-size:17px;
  line-height:1.85;
  color:rgba(246,243,238,.86);
  margin-bottom:36px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:40px;
  padding-top:28px;
  border-top:1px solid rgba(246,243,238,.18);
}
.hero-stat{min-width:120px;}
.hero-stat .num{
  display:block;
  font-family:var(--mono);
  font-size:34px;
  font-weight:600;
  line-height:1.1;
  color:var(--amber);
  letter-spacing:-.01em;
}
.hero-stat .label{
  display:block;
  margin-top:6px;
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(246,243,238,.66);
}

/* ---------- 锚点胶囊 ---------- */
.anchor-bar{
  position:sticky;
  top:var(--header-h-sm);
  z-index:60;
  background:var(--bg);
  border-bottom:1px solid transparent;
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.anchor-bar.is-stuck{
  border-bottom-color:var(--line);
  box-shadow:var(--l1);
}
.anchor-list{
  display:flex;
  gap:8px;
  overflow-x:auto;
  padding:14px 0;
  scrollbar-width:none;
}
.anchor-list::-webkit-scrollbar{display:none;}
.anchor-list a{
  flex:0 0 auto;
  padding:8px 18px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:var(--surface);
  font-size:14px;
  color:var(--body);
  transition:border-color .16s var(--ease),color .16s var(--ease),transform .16s var(--ease),box-shadow .16s var(--ease);
}
.anchor-list a:hover{
  border-color:var(--amber);
  color:var(--ink);
  transform:translateY(-1px);
  box-shadow:var(--l1);
}
.anchor-list a:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:720px;margin-bottom:48px;}
.eyebrow{
  display:inline-block;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--amber);
  margin-bottom:14px;
}
.section-head h2{margin-bottom:16px;}
.section-head p{font-size:16px;color:var(--muted);}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;max-width:900px;}
.timeline::before{
  content:"";
  position:absolute;
  left:27px;
  top:16px;
  bottom:16px;
  width:1px;
  background:var(--line);
}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:56px 1fr;
  gap:28px;
  padding-bottom:44px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-index{
  position:relative;
  z-index:1;
  width:56px;
  height:56px;
  display:grid;
  place-items:center;
  border:1.5px solid var(--amber);
  border-radius:50%;
  background:var(--bg);
  font-family:var(--mono);
  font-size:16px;
  font-weight:600;
  color:var(--amber);
}
.section-alt .tl-index{background:var(--bg-alt);}
.tl-body{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 28px;
  transition:border-color .16s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.tl-body:hover{
  border-color:var(--amber);
  box-shadow:var(--l2);
  transform:translateY(-3px);
}
.tl-body h3{margin-bottom:10px;}
.tl-body p{font-size:15px;line-height:1.85;color:var(--body);}
.tl-meta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
}
.tl-meta .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--cloud);
}

/* ---------- 等级行面板 ---------- */
.tier-list{display:flex;flex-direction:column;gap:16px;}
.tier-row{
  display:grid;
  grid-template-columns:150px 1fr 150px;
  align-items:center;
  gap:28px;
  padding:24px 28px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:border-color .16s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.tier-row:hover{
  border-color:var(--amber);
  box-shadow:var(--l2);
  transform:translateY(-2px);
}
.tier-row.is-featured{
  border-color:var(--amber);
  border-width:1.5px;
  background:#FBF6EE;
}
.tier-name{display:flex;flex-direction:column;gap:8px;}
.tier-name strong{
  font-family:var(--serif);
  font-size:19px;
  color:var(--ink);
  font-weight:600;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  align-self:flex-start;
  padding:3px 10px;
  border-radius:var(--r-pill);
  font-size:12px;
  letter-spacing:.06em;
  line-height:1.5;
}
.badge-default{background:var(--bg-alt);color:var(--ink);}
.badge-member{background:#F2E7D6;color:var(--amber-deep);}
.badge-line{border:1px solid var(--cloud);color:var(--cloud);}
.tier-desc{font-size:15px;line-height:1.8;color:var(--body);}
.tier-desc span{display:block;color:var(--muted);font-size:13.5px;margin-top:6px;}
.tier-action{text-align:right;}
.tier-action a{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--amber-deep);
  border-bottom:1px solid transparent;
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.tier-action a:hover{border-bottom-color:var(--amber);color:var(--amber-deep);}

/* ---------- 核对清单 ---------- */
.check-layout{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:start;
}
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px;margin-top:8px;}
.check-item{
  display:grid;
  grid-template-columns:24px 1fr;
  gap:12px;
  padding:16px 18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:border-color .16s var(--ease),transform .16s var(--ease);
}
.check-item:hover{border-color:var(--amber);transform:translateY(-2px);}
.check-icon{color:var(--cloud);margin-top:4px;}
.check-item strong{
  display:block;
  font-size:15px;
  color:var(--ink);
  font-weight:600;
  margin-bottom:4px;
}
.check-item p{font-size:13.5px;line-height:1.75;color:var(--muted);margin:0;}
.check-figure{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--l1);
  background:var(--surface);
}
.check-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.check-figure figcaption{
  padding:16px 20px;
  font-size:13.5px;
  color:var(--muted);
  border-top:1px solid var(--line-soft);
}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:320px 1fr;
  gap:56px;
  align-items:start;
}
.faq-aside{position:sticky;top:calc(var(--header-h-sm) + 24px);}
.faq-aside h2{margin-bottom:14px;}
.faq-aside p{font-size:15px;color:var(--muted);}
.faq-aside .aside-note{
  margin-top:24px;
  padding:16px 18px;
  border-left:3px solid var(--amber);
  background:var(--bg-alt);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:14px;
  color:var(--body);
}
.faq-list{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;
  padding:22px 4px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  font-family:var(--sans);
  color:var(--ink);
  transition:color .16s var(--ease);
}
.faq-q:hover{color:var(--amber-deep);}
.faq-q:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}
.faq-q .chev{
  flex:0 0 auto;
  color:var(--muted);
  transition:transform .24s var(--ease),color .24s var(--ease);
}
.faq-item.is-open .faq-q{color:var(--amber-deep);}
.faq-item.is-open .chev{transform:rotate(180deg);color:var(--amber);}
.faq-a{
  max-height:0;
  overflow:hidden;
  opacity:0;
  transition:max-height .32s var(--ease),opacity .24s var(--ease);
}
.faq-item.is-open .faq-a{opacity:1;}
.faq-a-inner{
  padding:0 4px 24px 16px;
  border-left:3px solid var(--amber);
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  background:var(--ink);
  color:var(--bg);
  padding:88px 0;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right,rgba(246,243,238,.045) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(246,243,238,.045) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:2;
  max-width:680px;
}
.cta-inner h2{color:#FBF8F3;margin-bottom:16px;}
.cta-inner p{
  font-size:16px;
  line-height:1.85;
  color:rgba(246,243,238,.82);
  margin-bottom:32px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.cta-note{
  margin-top:24px;
  font-size:13px;
  color:rgba(246,243,238,.6);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(246,243,238,.78);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-col h4{
  color:#FBF8F3;
  font-size:15px;
  letter-spacing:.04em;
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;line-height:1.7;}
.footer-col a{
  color:rgba(246,243,238,.78);
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-col a:hover{color:var(--amber);border-bottom-color:var(--amber);}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
  font-family:var(--serif);
  font-size:18px;
  color:#FBF8F3;
}
.footer-brand .brand-mark{
  background:transparent;
  border-color:rgba(246,243,238,.24);
  color:var(--amber);
}
.footer-about{
  font-size:14px;
  line-height:1.8;
  color:rgba(246,243,238,.66);
  max-width:340px;
  margin:0;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding-top:24px;
  border-top:1px solid rgba(246,243,238,.16);
  font-size:13px;
  color:rgba(246,243,238,.6);
}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-desktop{display:none;}
  .menu-toggle{display:inline-flex;}
  .section{padding:80px 0;}
  .check-layout{grid-template-columns:1fr;gap:36px;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-aside{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .header-inner{height:64px;}
  .site-header.is-scrolled .header-inner{height:56px;}
  .brand-name{font-size:16px;}
  .hero-inner{padding:52px 16px 48px;}
  .hero-stats{gap:28px;}
  .hero-stat .num{font-size:28px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .anchor-bar{top:56px;}
  .tl-item{grid-template-columns:44px 1fr;gap:18px;padding-bottom:32px;}
  .tl-index{width:44px;height:44px;font-size:14px;}
  .timeline::before{left:21px;}
  .tl-body{padding:20px 20px;}
  .tier-row{grid-template-columns:1fr;gap:14px;padding:20px;}
  .tier-action{text-align:left;}
  .check-list{grid-template-columns:1fr;}
  .cta-band{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-about{max-width:none;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .hero-stats{gap:20px;}
  .hero-stat{min-width:96px;}
  .btn{width:100%;}
  .header-actions .btn{width:auto;}
  .hero-stat .num{font-size:24px;}
  .tl-body h3{font-size:18px;}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .btn:hover,.tl-body:hover,.tier-row:hover,.check-item:hover{transform:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}