/* roulang page: index */
:root{
  --bg:#FAF8F4;
  --bg-alt:#F1ECE3;
  --line:#E4DED3;
  --ink:#16211C;
  --ink-2:#4A544E;
  --ink-3:#8A9188;
  --brand:#123B2F;
  --brand-deep:#0E1A16;
  --accent:#E8674A;
  --accent-hover:#D2543A;
  --mint:#7FB0A2;
  --success:#2E7D5B;
  --warn:#B7791F;
  --err:#C0392B;
  --disabled:#C7C2B8;
  --shadow-1:0 1px 2px rgba(18,33,28,.06);
  --shadow-2:0 10px 28px -14px rgba(18,33,28,.22);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --font-serif:"Noto Serif SC","Source Han Serif SC",Songti SC,SimSun,Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.16,.84,.44,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
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,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;letter-spacing:-.02em;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(232,103,74,.2);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (min-width:1024px) and (max-width:1279px){.container{max-width:960px;}}
@media (max-width:1023px){.container{padding:0 24px;}}
@media (max-width:520px){.container{padding:0 20px;}}

.section{padding:104px 0;}
@media (max-width:1023px){.section{padding:80px 0;}}
@media (max-width:767px){.section{padding:60px 0;}}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:120;background:var(--bg);border-bottom:1px solid var(--line);}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.nav{height:64px;display:flex;align-items:center;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;min-height:44px;}
.brand-mark{
  width:32px;height:32px;border-radius:8px;background:var(--brand);color:#FAF8F4;
  display:grid;place-items:center;font-family:var(--font-mono);font-size:12px;font-weight:700;
  letter-spacing:-.02em;font-variant-numeric:tabular-nums;
}
.brand-name{font-size:17px;font-weight:600;letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:10px;}
.nav-links a{position:relative;display:inline-flex;align-items:center;height:44px;font-size:14.5px;color:var(--ink-2);}
.nav-links a::after{
  content:"";position:absolute;left:0;right:auto;bottom:8px;height:2px;width:0;
  background:var(--accent);transition:width .18s ease;
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{width:100%;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search{position:relative;width:260px;}
.search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--ink-3);pointer-events:none;}
.search input{
  width:100%;height:38px;border-radius:var(--r-btn);border:1px solid transparent;
  background:var(--bg-alt);padding:0 56px 0 34px;font-size:13.5px;transition:border-color .2s ease,box-shadow .2s ease;
}
.search input::placeholder{color:var(--ink-3);}
.search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(232,103,74,.18);}
.search .kbd{
  position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-family:var(--font-mono);font-size:11px;color:var(--ink-3);
  background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:1px 6px;line-height:1.5;
}
.nav-divider{width:1px;height:24px;background:var(--line);}
.icon-btn{
  width:38px;height:38px;border-radius:8px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--brand);transition:background .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:var(--bg-alt);border-color:var(--ink-3);}
.menu-toggle{display:none;width:44px;height:44px;margin-left:auto;border-radius:8px;border:1px solid var(--line);place-items:center;color:var(--ink);}
.menu-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn .arrow{transition:transform .2s ease;display:inline-block;}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--brand);color:#FAF8F4;}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--brand);}
.btn-ghost:hover{background:var(--bg-alt);}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{background:var(--disabled);color:var(--ink-3);cursor:not-allowed;transform:none;}

.text-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);padding-bottom:2px;
}
.text-link::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--accent);transition:width .18s ease;}
.text-link:hover{color:var(--accent);}
.text-link:hover::after{width:100%;}
.text-link span{transition:transform .2s ease;}
.text-link:hover span{transform:translateX(4px);}

.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  font-size:11px;font-weight:600;letter-spacing:.08em;white-space:nowrap;
}
.badge-mint{background:rgba(127,176,162,.2);color:#123B2F;}
.badge-dark{background:rgba(14,26,22,.62);color:#FAF8F4;backdrop-filter:none;}

/* ---------- 倒计时条 ---------- */
.countdown-bar{background:var(--brand-deep);color:#FAF8F4;}
.countdown-inner{height:48px;display:flex;align-items:center;gap:14px;}
.cd-badge{
  font-size:11px;font-weight:700;letter-spacing:.08em;color:#fff;background:var(--accent);
  border-radius:999px;padding:3px 10px;line-height:1.4;flex-shrink:0;
}
.cd-text{font-size:13px;color:rgba(250,248,244,.72);}
.cd-clock{margin-left:auto;display:flex;align-items:center;gap:4px;font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
.cd-unit{display:inline-flex;align-items:baseline;gap:3px;}
.cd-unit b{font-size:18px;font-weight:700;transition:opacity .12s ease;letter-spacing:-.02em;}
.cd-unit b.is-tick{opacity:.4;}
.cd-unit i{font-style:normal;font-size:11px;color:rgba(250,248,244,.55);}
.cd-sep{color:var(--accent);font-size:16px;padding:0 2px;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:112px 0 120px;}
.hero-grid-bg{
  position:absolute;inset:0;pointer-events:none;opacity:.08;
  background-image:
    linear-gradient(to right,rgba(18,59,47,.9) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(18,59,47,.9) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(circle at 32% 42%,#000 0%,transparent 74%);
  mask-image:radial-gradient(circle at 32% 42%,#000 0%,transparent 74%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:64px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);background:rgba(127,176,162,.2);border-radius:999px;padding:5px 14px;
}
.hero h1{
  font-size:clamp(34px,5.2vw,60px);line-height:1.12;letter-spacing:-.02em;
  margin:24px 0 20px;max-width:16em;
}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:34em;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:34px 0 40px;}
.hero-stats{display:flex;align-items:center;gap:22px;}
.hero-stats .stat{display:flex;flex-direction:column;gap:2px;}
.hero-stats .stat b{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:24px;font-weight:700;letter-spacing:-.02em;color:var(--brand);}
.hero-stats .stat span{font-size:12px;color:var(--ink-3);}
.hero-stats .vr{width:1px;height:32px;background:var(--line);}
.hero-media{position:relative;}
.hero-media img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:16px;border:1px solid var(--line);}
.hero-float{
  position:absolute;left:-26px;bottom:32px;background:var(--bg);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-2);padding:16px 20px;min-width:150px;
}
.hero-float b{display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:26px;color:var(--accent);line-height:1.2;}
.hero-float span{font-size:12px;color:var(--ink-3);}

/* ---------- 通用标题 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:56px;}
.section-head h2{font-size:clamp(26px,3.4vw,40px);line-height:1.2;}
.section-head p{font-size:15px;color:var(--ink-2);margin-top:12px;max-width:44em;}
@media (max-width:767px){.section-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:36px;}}

/* ---------- 活动卖点 ---------- */
.points{background:var(--bg);}
.points-grid{display:grid;grid-template-columns:2fr 3fr;gap:64px;}
.points-head{position:sticky;top:140px;align-self:start;}
.points-head .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:24px;color:var(--accent);font-weight:700;letter-spacing:-.02em;}
.points-head h2{font-size:clamp(26px,3.4vw,40px);line-height:1.2;margin:14px 0 16px;}
.points-head p{font-size:15px;color:var(--ink-2);max-width:26em;}
.points-list{border-top:1px solid var(--line);}
.point-row{
  display:grid;grid-template-columns:56px 1fr 24px;gap:16px;align-items:center;
  padding:24px 0;border-bottom:1px solid var(--line);
  transition:background-color .2s ease,padding-left .2s ease,padding-right .2s ease;
}
.point-row:hover{background:var(--bg-alt);padding-left:8px;padding-right:8px;}
.p-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:24px;font-weight:700;color:var(--accent);letter-spacing:-.02em;}
.p-body h3{font-size:19px;font-weight:600;line-height:1.4;}
.p-body p{font-size:14px;color:var(--ink-2);margin-top:6px;}
.p-arrow{color:var(--ink-3);font-size:18px;transition:transform .2s ease,color .2s ease;}
.point-row:hover .p-arrow{transform:translateX(4px);color:var(--accent);}

/* ---------- 亮点图墙 ---------- */
.gallery{background:var(--bg-alt);}
.gallery-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:20px;align-items:start;}
.g-item{position:relative;border-radius:var(--r-img);overflow:hidden;background:var(--bg);border:1px solid var(--line);}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease,filter .2s ease;}
.g-item:hover img{transform:scale(1.02);filter:brightness(1.05);}
.g-tag{
  position:absolute;left:12px;bottom:12px;font-size:11px;letter-spacing:.08em;font-weight:600;
  padding:4px 10px;border-radius:999px;background:rgba(14,26,22,.62);color:#FAF8F4;
  transition:transform .2s ease;
}
.g-item:hover .g-tag{transform:translateY(-4px);}
.g-a{grid-column:span 6;height:320px;}
.g-b{grid-column:span 3;height:320px;}
.g-c{grid-column:span 3;height:320px;}
.g-d{grid-column:span 5;height:240px;}
.g-e{grid-column:span 4;height:240px;}
.g-f{grid-column:span 3;height:240px;}

/* ---------- 报名 CTA ---------- */
.signup{position:relative;overflow:hidden;background:var(--brand-deep);color:#FAF8F4;padding:88px 0;}
.signup::after{
  content:"";position:absolute;top:-60px;right:-60px;width:320px;height:320px;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(127,176,162,.4) 0 1px,transparent 1px 12px);
  opacity:.45;
}
.signup-inner{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.signup h2{font-size:clamp(26px,3.4vw,40px);line-height:1.2;color:#FAF8F4;}
.signup-text{font-size:14px;color:rgba(250,248,244,.66);margin-top:16px;max-width:32em;}
.signup-note{font-size:12px;color:rgba(250,248,244,.5);margin-top:14px;line-height:1.7;}
.form-card{
  background:var(--bg);border-radius:var(--r-card);padding:28px;color:var(--ink);
  box-shadow:var(--shadow-2);border:1px solid rgba(250,248,244,.08);
}
.form-card h3{font-size:20px;font-weight:600;margin-bottom:6px;}
.form-card .form-sub{font-size:13px;color:var(--ink-3);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:8px;font-weight:600;}
.field input,.field select{
  width:100%;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:var(--bg-alt);padding:0 14px;font-size:14px;transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field input::placeholder{color:var(--ink-3);}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(232,103,74,.18);background:var(--bg);}
.field select{
  appearance:none;-webkit-appearance:none;cursor:pointer;padding-right:38px;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%234A544E' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto;}
.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;gap:16px;text-align:left;
  padding:20px 4px;min-height:44px;color:var(--ink);
}
.faq-q .q-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:13px;color:var(--ink-3);flex-shrink:0;}
.faq-q .q-text{font-family:var(--font-serif);font-size:17px;font-weight:600;line-height:1.5;flex:1;}
.faq-q .q-icon{
  width:20px;height:20px;position:relative;flex-shrink:0;transition:transform .2s ease;color:var(--accent);
}
.faq-q .q-icon::before,.faq-q .q-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:currentColor;border-radius:2px;transform:translate(-50%,-50%);
}
.faq-q .q-icon::before{width:14px;height:2px;}
.faq-q .q-icon::after{width:2px;height:14px;transition:opacity .2s ease;}
.faq-item.is-open .q-icon{transform:rotate(90deg);}
.faq-item.is-open .q-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-item.is-open .faq-a{max-height:340px;}
.faq-a p{padding:0 4px 24px 45px;font-size:15px;line-height:1.9;color:var(--ink-2);}
@media (max-width:767px){.faq-a p{padding-left:4px;}}

/* ---------- 最新信息 ---------- */
.latest{background:var(--bg-alt);}
.latest-grid{display:grid;grid-template-columns:6fr 6fr;gap:32px;align-items:start;}
.latest-feature{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
}
.latest-feature:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.lf-media{display:block;overflow:hidden;}
.lf-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .2s ease;}
.latest-feature:hover .lf-media img{transform:scale(1.02);}
.lf-body{padding:24px 26px 26px;}
.lf-body h3{font-size:22px;font-weight:600;line-height:1.45;margin:14px 0 10px;}
.lf-body h3 a:hover{color:var(--accent);}
.lf-body p{font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.lf-body time{display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:13px;color:var(--ink-3);margin-top:16px;}
.latest-list{border-top:1px solid var(--line);}
.latest-list li{border-bottom:1px solid var(--line);transition:background-color .2s ease;}
.latest-list li:hover{background:var(--bg);}
.ll-link{display:block;padding:18px 16px;}
.ll-link h3{font-size:16px;font-weight:600;line-height:1.5;margin:8px 0 6px;transition:color .2s ease;}
.ll-link:hover h3{color:var(--accent);}
.ll-link p{font-size:13.5px;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.ll-link time{display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:12px;color:var(--ink-3);margin-top:8px;}
.empty-state{
  background:var(--bg);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:60px 32px;text-align:center;
}
.empty-state svg{color:var(--mint);margin:0 auto 16px;}
.empty-state p{font-size:15px;color:var(--ink-2);margin-bottom:20px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--brand);}
.footer-desc{font-size:13.5px;color:var(--ink-2);max-width:22em;line-height:1.8;}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social a{
  width:36px;height:36px;border-radius:8px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink-2);transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.footer-social a:hover{background:var(--brand);color:#FAF8F4;border-color:var(--brand);}
.footer-col-title{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--ink);margin-bottom:18px;font-family:var(--font-sans);}
.footer-list li{margin-bottom:12px;}
.footer-list a{font-size:13.5px;color:var(--ink-2);transition:color .2s ease;}
.footer-list a:hover{color:var(--accent);}
.footer-contact li{font-size:13.5px;color:var(--ink-2);margin-bottom:12px;line-height:1.7;}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:12.5px;color:var(--ink-3);}
.footer-bottom .meta{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom .meta span{font-size:12.5px;color:var(--ink-3);}
.footer-col-arrow{display:none;}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,26,22,.35);z-index:200;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:88vw;background:var(--bg);z-index:210;
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
  border-left:1px solid var(--line);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{width:44px;height:44px;border-radius:8px;border:1px solid var(--line);display:grid;place-items:center;font-size:18px;color:var(--ink-2);}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;padding:0 6px;font-size:15px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--ink);font-weight:600;}
.drawer-search{margin:20px 0;}
.drawer-search input{width:100%;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);background:var(--bg-alt);padding:0 14px;font-size:14px;}
.drawer-cta{margin-top:auto;width:100%;}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
.d1{transition-delay:.06s;}
.d2{transition-delay:.12s;}
.d3{transition-delay:.18s;}
.d4{transition-delay:.24s;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .search{width:210px;}
}
@media (max-width:1023px){
  .nav-links,.search,.nav-divider,.icon-btn{display:none;}
  .menu-toggle{display:grid;}
  .hero{padding:72px 0 80px;}
  .hero-inner{grid-template-columns:1fr;gap:44px;}
  .hero-media img{aspect-ratio:16/10;}
  .hero-float{left:20px;bottom:20px;}
  .points-grid{grid-template-columns:1fr;gap:36px;}
  .points-head{position:static;}
  .latest-grid{grid-template-columns:1fr;gap:28px;}
  .signup-inner{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  .nav{height:56px;}
  .nav-right{display:none;}
  .brand-name{font-size:15.5px;}
  .countdown-inner{height:auto;flex-wrap:wrap;padding:8px 0;gap:10px;}
  .cd-clock{margin-left:0;width:100%;}
  .cd-text{font-size:12px;}
  .hero h1{font-size:clamp(30px,8.4vw,42px);}
  .hero-actions .btn{width:100%;}
  .hero-stats{gap:14px;flex-wrap:wrap;}
  .hero-stats .stat b{font-size:20px;}
  .gallery-grid{grid-template-columns:repeat(2,1fr);}
  .g-a,.g-b,.g-c,.g-d,.g-e,.g-f{grid-column:span 1;height:210px;}
  .point-row{grid-template-columns:44px 1fr;gap:12px;}
  .p-arrow{display:none;}
  .p-num{font-size:20px;}
  .signup{padding:60px 0;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:0;padding-bottom:24px;}
  .footer-col{border-bottom:1px solid var(--line);}
  .footer-col-title{display:flex;align-items:center;justify-content:space-between;margin:0;padding:18px 0;min-height:44px;}
  .footer-col-arrow{display:block;color:var(--ink-3);transition:transform .2s ease;font-size:14px;}
  .footer-col.is-open .footer-col-arrow{transform:rotate(90deg);}
  .footer-col-body{display:none;padding-bottom:20px;}
  .footer-col.is-open .footer-col-body{display:block;}
  .footer-col.is-first .footer-col-title{pointer-events:none;}
  .footer-col.is-first .footer-col-body{display:block;}
  .footer-col.is-first .footer-col-arrow{display:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .gallery-grid{grid-template-columns:1fr;}
  .g-a,.g-b,.g-c,.g-d,.g-e,.g-f{height:200px;}
  .hero h1{font-size:clamp(28px,9vw,34px);}
  .btn{width:100%;}
  .hero-actions{gap:10px;}
  .section-head h2{font-size:26px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{transform:none;transition:opacity .2s linear;}
  .btn:hover,.latest-feature:hover{transform:none;}
  .g-item:hover img{transform:none;}
}

/* roulang page: category1 */
:root{
  --bg:#FAF8F4;
  --bg-alt:#F1ECE3;
  --line:#E4DED3;
  --ink:#16211C;
  --ink-2:#4A544E;
  --ink-3:#8A9188;
  --brand:#123B2F;
  --brand-deep:#0E1A16;
  --accent:#E8674A;
  --accent-hover:#D2543A;
  --mint:#7FB0A2;
  --ok:#2E7D5B;
  --warn:#B7791F;
  --err:#C0392B;
  --disabled:#C7C2B8;

  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --r-pill:999px;

  --shadow-1:0 1px 2px rgba(18,33,28,.06);
  --shadow-2:0 10px 28px -14px rgba(18,33,28,.22);

  --sp-section:104px;
  --container:1200px;

  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--brand);text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);margin:0;line-height:1.2;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn .arrow{display:inline-block;transition:transform .2s ease;}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--brand);color:#FAF8F4;}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--brand);}
.btn-ghost:hover{background:var(--bg-alt);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn:disabled{background:var(--disabled);color:var(--ink-3);cursor:not-allowed;transform:none;box-shadow:none;}

.link-underline{position:relative;color:var(--brand);font-weight:600;transition:color .2s ease;}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--accent);
  transition:width .18s ease;
}
.link-underline:hover{color:var(--accent);}
.link-underline:hover::after{width:100%;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 1px 2px rgba(18,33,28,.06);}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:64px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:8px;background:var(--brand);color:#FAF8F4;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:12.5px;font-weight:700;letter-spacing:-.02em;
}
.brand-name{font-size:16px;font-weight:600;letter-spacing:-.01em;color:var(--ink);}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px;}
.nav-links a{
  position:relative;font-size:14.5px;color:var(--ink-2);padding:20px 0;
  transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:14px;height:2px;width:0;background:var(--accent);
  transition:width .2s ease;
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{width:100%;}

.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.command-search{
  position:relative;display:flex;align-items:center;
  width:260px;height:38px;border-radius:var(--r-input);
  background:var(--bg-alt);border:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.command-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(232,103,74,.18);}
.command-search svg{margin-left:12px;flex-shrink:0;color:var(--ink-3);}
.command-search input{
  flex:1;height:100%;border:0;background:transparent;outline:none;
  font-family:inherit;font-size:14px;color:var(--ink);padding:0 8px;
}
.command-search input::placeholder{color:var(--ink-3);}
.kbd{
  margin-right:8px;padding:2px 6px;border-radius:6px;border:1px solid var(--line);
  background:var(--bg);color:var(--ink-3);font-family:var(--font-mono);font-size:11px;
}
.header-divider{width:1px;height:24px;background:var(--line);}
.icon-btn{
  width:38px;height:38px;border-radius:8px;border:1px solid var(--line);
  background:transparent;color:var(--ink-2);display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background-color .2s ease,color .2s ease;
}
.icon-btn:hover{background:var(--bg-alt);color:var(--ink);}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:8px;border:1px solid var(--line);
  background:transparent;cursor:pointer;align-items:center;justify-content:center;color:var(--ink);
}
.menu-toggle span{display:block;width:16px;height:1.5px;background:currentColor;position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.5px;background:currentColor;
}
.menu-toggle span::before{top:-5px;}
.menu-toggle span::after{top:5px;}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,26,22,.35);z-index:80;
  opacity:0;pointer-events:none;transition:opacity .2s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;z-index:90;
  background:var(--bg);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .24s ease;
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.drawer-close{
  width:36px;height:36px;border-radius:8px;border:1px solid var(--line);background:transparent;
  color:var(--ink-2);cursor:pointer;font-size:18px;line-height:1;
}
.drawer nav{display:flex;flex-direction:column;margin-top:12px;}
.drawer nav a{
  display:flex;align-items:center;min-height:52px;font-size:15.5px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.drawer nav a.is-active{color:var(--brand);font-weight:600;}
.drawer .btn{margin-top:auto;width:100%;}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;
  padding:64px 0 72px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(rgba(18,33,28,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(18,33,28,.045) 1px,transparent 1px);
  background-size:48px 48px;
  background-position:-1px -1px;
}
.hero-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:56px;align-items:center;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:20px;}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb span.sep{color:var(--ink-3);}
.breadcrumb .current{color:var(--ink-2);}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(127,176,162,.18);color:var(--brand);
  font-size:12px;letter-spacing:.08em;margin-bottom:20px;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block;}
.page-hero h1{
  font-size:clamp(34px,4.4vw,52px);
  font-weight:700;line-height:1.12;letter-spacing:-.02em;
  margin-bottom:22px;
}
.hero-lead{
  font-size:17px;color:var(--ink-2);max-width:640px;line-height:1.85;margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

.stat-stack{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:6px 24px;
}
.stat-item{padding:22px 0;border-bottom:1px solid var(--line);}
.stat-item:last-child{border-bottom:0;}
.stat-num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:32px;font-weight:700;color:var(--brand);letter-spacing:-.02em;line-height:1.1;
}
.stat-num em{font-style:normal;font-size:15px;color:var(--ink-3);margin-left:4px;font-family:var(--font-sans);}
.stat-label{font-size:13px;color:var(--ink-3);margin-top:6px;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sp-section) 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:56px;}
.eyebrow{
  font-family:var(--font-mono);font-size:13px;color:var(--accent);
  letter-spacing:.08em;display:block;margin-bottom:14px;
}
.section-head h2{font-size:clamp(26px,3.4vw,40px);font-weight:700;letter-spacing:-.02em;margin-bottom:16px;}
.section-head p{color:var(--ink-2);font-size:16px;max-width:660px;}

/* ---------- 编号清单 / 时间轴 ---------- */
.timeline{
  position:relative;
  border-top:1px solid var(--line);
}
.tl-item{
  display:grid;
  grid-template-columns:96px minmax(0,1fr) 40px;
  gap:28px;
  align-items:start;
  padding:30px 8px;
  border-bottom:1px solid var(--line);
  transition:background-color .2s ease,padding-left .2s ease;
}
.tl-item:hover{background:var(--bg-alt);padding-left:16px;}
.tl-index{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:24px;font-weight:700;color:var(--accent);line-height:1.3;
}
.tl-body h3{font-size:20px;font-weight:600;margin-bottom:8px;}
.tl-body p{font-size:14.5px;color:var(--ink-2);max-width:720px;}
.tl-meta{
  margin-top:12px;display:flex;flex-wrap:wrap;gap:10px;
}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:var(--r-pill);
  background:rgba(127,176,162,.18);color:var(--brand);
  font-size:11.5px;letter-spacing:.06em;
}
.tag-outline{background:transparent;border:1px solid var(--line);color:var(--ink-3);}
.tl-arrow{
  justify-self:end;color:var(--ink-3);font-size:18px;line-height:1.6;
  transition:color .2s ease,transform .2s ease;
}
.tl-item:hover .tl-arrow{color:var(--accent);transform:translateX(4px);}

/* ---------- 适用场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:transform .2s ease,box-shadow .2s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.scene-media{position:relative;aspect-ratio:16/10;overflow:hidden;}
.scene-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease;}
.scene-card:hover .scene-media img{transform:scale(1.02);}
.scene-media .tag{position:absolute;left:14px;bottom:14px;background:rgba(14,26,22,.72);color:#F1ECE3;}
.scene-body{padding:22px 24px 26px;}
.scene-body h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.scene-body p{font-size:14.5px;color:var(--ink-2);}

/* ---------- 功能明细两栏 ---------- */
.detail-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:start;}
.detail-sticky{position:sticky;top:96px;}
.detail-sticky h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:16px;}
.detail-sticky p{color:var(--ink-2);font-size:15px;max-width:380px;}
.detail-list{border-top:1px solid var(--line);}
.detail-row{
  display:flex;gap:20px;align-items:flex-start;
  padding:24px 8px;border-bottom:1px solid var(--line);
  transition:background-color .2s ease;
}
.detail-row:hover{background:var(--bg-alt);}
.dot-square{
  width:8px;height:8px;flex-shrink:0;margin-top:11px;background:var(--accent);border-radius:1px;
}
.detail-row h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.detail-row p{font-size:14.5px;color:var(--ink-2);}
.detail-row .kbd-inline{
  display:inline-block;margin-left:6px;padding:1px 6px;border-radius:5px;
  border:1px solid var(--line);background:var(--bg-alt);
  font-family:var(--font-mono);font-size:11.5px;color:var(--ink-2);
}

/* ---------- 中段 CTA 色带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand-deep);color:#F1ECE3;
  padding:64px 0;
}
.cta-band::after{
  content:"";position:absolute;top:0;right:0;width:220px;height:100%;
  background-image:repeating-linear-gradient(115deg,rgba(232,103,74,.28) 0 1px,transparent 1px 14px);
  pointer-events:none;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;position:relative;z-index:1;}
.cta-inner h2{color:#FAF8F4;font-size:clamp(24px,2.8vw,34px);margin-bottom:12px;}
.cta-inner p{color:rgba(241,236,227,.75);font-size:14.5px;max-width:520px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}
.cta-band .btn-ghost{border-color:rgba(241,236,227,.35);color:#F1ECE3;}
.cta-band .btn-ghost:hover{background:rgba(241,236,227,.1);}

/* ---------- 相关条目 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;display:flex;flex-direction:column;gap:12px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D9D2C5;}
.rel-card h3{font-size:18px;font-weight:600;line-height:1.4;}
.rel-card p{font-size:14.5px;color:var(--ink-2);}
.rel-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--line);
}
.rel-foot time{font-family:var(--font-mono);font-size:12.5px;color:var(--ink-3);font-variant-numeric:tabular-nums;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto;}
.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;gap:16px;
  min-height:64px;padding:18px 8px;background:transparent;border:0;cursor:pointer;
  text-align:left;font-family:var(--font-serif);font-size:17.5px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-idx{font-family:var(--font-mono);font-size:13px;color:var(--ink-3);flex-shrink:0;}
.faq-q span.q-text{flex:1;}
.faq-icon{
  flex-shrink:0;width:20px;height:20px;position:relative;transition:transform .2s ease;color:var(--accent);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:1.5px;}
.faq-icon::after{width:1.5px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(90deg);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .28s ease;
}
.faq-a-inner{padding:0 8px 26px 45px;font-size:15px;color:var(--ink-2);line-height:1.9;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-alt);border-top:1px solid var(--line);
  padding:72px 0 28px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-col-title{
  font-family:var(--font-sans);font-size:14px;font-weight:600;color:var(--ink);
  margin-bottom:18px;display:flex;align-items:center;justify-content:space-between;
}
.footer-col-arrow{display:none;color:var(--ink-3);transition:transform .2s ease;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:var(--brand);}
.footer-brand .brand-name{font-size:15.5px;font-weight:600;color:var(--ink);}
.footer-desc{font-size:14px;color:var(--ink-2);max-width:300px;line-height:1.8;}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social a{
  width:34px;height:34px;border-radius:8px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--ink-2);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.footer-social a:hover{background:var(--bg);color:var(--accent);border-color:#D9D2C5;}
.footer-list li{margin-bottom:12px;}
.footer-list a{font-size:14px;color:var(--ink-2);transition:color .2s ease;}
.footer-list a:hover{color:var(--accent);}
.footer-note{font-size:13.5px;color:var(--ink-2);line-height:1.9;}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}
.footer-bottom a{color:var(--ink-3);}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s cubic-bezier(.16,.84,.44,1),transform .6s cubic-bezier(.16,.84,.44,1);}
.reveal.is-in{opacity:1;transform:none;}

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

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:960px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .command-search{display:none;}
  .header-divider{display:none;}
  .menu-toggle{display:flex;}
  .header-inner{gap:16px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .stat-stack{display:grid;grid-template-columns:repeat(3,1fr);padding:4px 8px;}
  .stat-item{border-bottom:0;border-right:1px solid var(--line);padding:20px 16px;}
  .stat-item:last-child{border-right:0;}
  .detail-grid{grid-template-columns:1fr;gap:32px;}
  .detail-sticky{position:static;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:26px;}
  .section{padding:80px 0;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:60px 0;}
  .page-hero{padding:44px 0 52px;}
  .hero-lead{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .stat-stack{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);padding:16px 8px;}
  .stat-item:last-child{border-bottom:0;}
  .scene-grid{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .tl-item{grid-template-columns:56px minmax(0,1fr);gap:16px;padding:24px 4px;}
  .tl-arrow{display:none;}
  .tl-index{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;gap:0;}
  .footer-col{border-bottom:1px solid var(--line);}
  .footer-col-title{margin:0;padding:18px 0;cursor:pointer;}
  .footer-col-arrow{display:block;}
  .footer-col.is-open .footer-col-arrow{transform:rotate(90deg);}
  .footer-col-body{display:none;padding-bottom:22px;}
  .footer-col.is-open .footer-col-body{display:block;}
  .site-footer{padding-top:32px;}
  .footer-bottom{margin-top:32px;flex-direction:column;gap:8px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-a-inner{padding-left:8px;}
}
@media (max-width:480px){
  .container{padding:0 20px;}
  .page-hero h1{font-size:34px;}
  .section-head{margin-bottom:36px;}
  .rel-card{padding:20px;}
}

/* roulang page: article */
:root{
  --bg:#FAF8F4;
  --bg-alt:#F1ECE3;
  --line:#E4DED3;
  --ink:#16211C;
  --ink-2:#4A544E;
  --ink-3:#8A9188;
  --brand:#123B2F;
  --brand-deep:#0E1A16;
  --accent:#E8674A;
  --accent-hover:#D2543A;
  --mint:#7FB0A2;
  --ok:#2E7D5B;
  --warn:#B7791F;
  --err:#C0392B;
  --disabled:#C7C2B8;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(18,33,28,.06);
  --shadow-2:0 10px 28px -14px rgba(18,33,28,.22);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --section:104px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;}
button,input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--section) 0;}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -16px rgba(18,33,28,.45);}
.nav-inner{display:flex;align-items:center;gap:28px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:8px;background:var(--brand);color:#FAF8F4;
  display:grid;place-items:center;font-family:var(--mono);font-size:12px;letter-spacing:.02em;
}
.brand-name{font-weight:600;font-size:17px;letter-spacing:-.01em;}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:6px;}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:14.5px;color:var(--ink-2);text-decoration:none;transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width .2s ease;
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{width:100%;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:16px;}
.command-search{
  display:flex;align-items:center;gap:8px;width:260px;height:38px;padding:0 10px;
  background:var(--bg-alt);border:1px solid transparent;border-radius:10px;
  transition:border-color .2s ease,background .2s ease;
}
.command-search:focus-within{border-color:var(--accent);background:#fff;}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;padding:0;
}
.command-search input::placeholder{color:var(--ink-3);}
.search-icon{color:var(--ink-3);flex-shrink:0;}
.kbd{
  font-family:var(--mono);font-size:11px;color:var(--ink-3);
  border:1px solid var(--line);border-radius:6px;padding:1px 5px;background:#fff;flex-shrink:0;
}
.nav-divider{width:1px;height:24px;background:var(--line);}
.icon-btn{
  width:38px;height:38px;border-radius:8px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink-2);background:transparent;
  cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:var(--bg-alt);color:var(--brand);border-color:#D8D1C4;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:transparent;color:var(--ink);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{background:var(--bg-alt);}

/* 抽屉 */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(14,26,22,.35);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-overlay.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;width:320px;max-width:86vw;height:100%;z-index:90;
  background:var(--bg);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .28s cubic-bezier(.16,.84,.44,1);
  display:flex;flex-direction:column;padding:20px 22px 28px;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.drawer-brand{display:flex;align-items:center;gap:10px;}
.drawer-link{
  display:flex;align-items:center;height:52px;font-size:16px;color:var(--ink);
  text-decoration:none;border-bottom:1px solid var(--line);transition:color .2s ease,padding-left .2s ease;
}
.drawer-link:hover{color:var(--brand);padding-left:4px;}
.drawer-link.is-active{color:var(--accent);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:20px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:600;text-decoration:none;cursor:pointer;
  border:1px solid transparent;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn .arrow{transition:transform .2s ease;}
.btn-primary{background:var(--brand);color:#FAF8F4;}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);}
.btn-primary:hover .arrow{transform:translateX(4px);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--brand);}
.btn-ghost:hover{background:var(--bg-alt);border-color:#D8D1C4;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn:disabled{background:var(--disabled);color:var(--ink-3);cursor:not-allowed;transform:none;}

/* ---------- 文章头部 ---------- */
.article-head{
  position:relative;padding:44px 0 38px;background:var(--bg);border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(18,33,28,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(18,33,28,.045) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 72%);
}
.article-head .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:22px;}
.breadcrumb a{color:var(--ink-2);text-decoration:none;transition:color .2s ease;position:relative;}
.breadcrumb a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--accent);transition:width .18s ease;
}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb a:hover::after{width:100%;}
.breadcrumb .sep{color:var(--line);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:rgba(127,176,162,.2);color:#2E5E52;font-size:11.5px;letter-spacing:.08em;font-weight:600;
}
.article-title{
  font-family:var(--serif);font-weight:700;letter-spacing:-.02em;
  font-size:clamp(28px,3.6vw,44px);line-height:1.28;color:var(--ink);
  margin:14px 0 18px;max-width:880px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13.5px;color:var(--ink-3);}
.article-meta .mono{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--ink-2);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line);}

/* ---------- 正文布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 236px;gap:64px;
  padding-top:56px;padding-bottom:88px;align-items:start;
}
.article-main{max-width:760px;width:100%;}
.article-body{font-size:17px;line-height:1.95;color:var(--ink-2);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.4em;max-width:72ch;}
.article-body h2{
  position:relative;font-family:var(--serif);font-weight:700;color:var(--ink);
  font-size:clamp(21px,2.2vw,26px);line-height:1.45;
  margin:2.2em 0 .85em;padding-left:20px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.3em;width:4px;height:20px;border-radius:2px;background:var(--accent);
}
.article-body h3{
  font-family:var(--serif);font-weight:600;color:var(--ink);
  font-size:19px;line-height:1.5;margin:1.8em 0 .7em;padding-left:12px;
}
.article-body h4{font-weight:600;color:var(--ink);font-size:16.5px;margin:1.5em 0 .6em;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.3em;}
.article-body ul{list-style:none;padding-left:1.1em;}
.article-body ul li{position:relative;padding-left:16px;margin:.5em 0;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--mint);border-radius:1px;
}
.article-body ol li{margin:.5em 0;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;background:var(--bg-alt);
  border-left:3px solid var(--accent);border-radius:0 10px 10px 0;font-size:16px;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;border-radius:var(--radius-img);border:1px solid var(--line);
  margin:1.6em 0 .6em;
}
.article-body figure{margin:1.6em 0;}
.article-body figure img{margin:0 0 .6em;}
.article-body figcaption{font-size:13px;color:var(--ink-3);line-height:1.7;}
.article-body a{
  color:var(--brand);text-decoration:none;
  border-bottom:1px solid rgba(232,103,74,.4);transition:color .2s ease,border-color .2s ease;
}
.article-body a:hover{color:var(--accent);border-bottom-color:var(--accent);}
.article-body strong{color:var(--ink);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top;}
.article-body th{background:var(--bg-alt);color:var(--ink);font-weight:600;}
.article-body code{
  font-family:var(--mono);font-size:.9em;background:var(--bg-alt);
  padding:2px 6px;border-radius:6px;color:var(--brand);
}
.empty-state{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--bg-alt);padding:36px 32px;text-align:center;
}
.empty-state h2{font-family:var(--serif);font-size:22px;color:var(--ink);margin:0 0 10px;padding:0;}
.empty-state h2::before{display:none;}
.empty-state p{font-size:15px;color:var(--ink-2);margin:0 auto 20px;max-width:44ch;}

/* 目录 */
.article-toc{position:sticky;top:88px;}
.toc-title{
  font-size:12px;letter-spacing:.14em;color:var(--ink-3);font-weight:600;
  margin:0 0 14px;
}
.toc-list{list-style:none;margin:0;padding:0;border-left:1px solid var(--line);}
.toc-list a{
  display:block;padding:6px 0 6px 14px;margin-left:-1px;border-left:2px solid transparent;
  font-size:13.5px;line-height:1.6;color:var(--ink-2);text-decoration:none;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.toc-list a:hover{color:var(--ink);background:rgba(241,236,227,.6);}
.toc-list a.is-current{color:var(--accent);border-left-color:var(--accent);font-weight:600;}

/* 文末操作 */
.article-actions{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:52px;padding-top:24px;border-top:1px solid var(--line);
}
.article-actions .spacer{margin-left:auto;}

/* ---------- 相关推荐 ---------- */
.related{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.section-title{
  font-family:var(--serif);font-weight:700;letter-spacing:-.01em;color:var(--ink);
  font-size:clamp(24px,2.8vw,32px);line-height:1.3;margin:0;
}
.section-sub{font-size:14.5px;color:var(--ink-2);margin:12px 0 0;max-width:62ch;}
.link-more{
  position:relative;font-size:14px;color:var(--brand);text-decoration:none;white-space:nowrap;
  transition:color .2s ease;
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--accent);transition:width .18s ease;
}
.link-more:hover{color:var(--accent);}
.link-more:hover::after{width:100%;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:40px;}
.post-card{
  display:flex;flex-direction:column;text-decoration:none;color:inherit;overflow:hidden;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D8D1C4;}
.post-card figure{margin:0;aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt);}
.post-card img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.post-card:hover img{transform:scale(1.02);}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;}
.card-body h3{
  font-family:var(--serif);font-size:18px;font-weight:600;line-height:1.5;
  color:var(--ink);margin:12px 0 8px;
}
.card-body p{font-size:14px;line-height:1.8;color:var(--ink-2);margin:0 0 16px;}
.card-meta{
  margin-top:auto;display:flex;align-items:center;gap:10px;
  font-size:12.5px;color:var(--ink-3);font-family:var(--mono);font-variant-numeric:tabular-nums;
}

/* ---------- CTA 色带 ---------- */
.cta-band{position:relative;background:var(--brand-deep);color:#EFEAE1;padding:76px 0;overflow:hidden;}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-80px;width:240px;height:240px;pointer-events:none;
  background:repeating-linear-gradient(45deg,rgba(250,248,244,.07) 0 1px,transparent 1px 10px);
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center;}
.cta-band h2{
  font-family:var(--serif);font-weight:700;letter-spacing:-.01em;color:#FAF8F4;
  font-size:clamp(24px,2.8vw,34px);line-height:1.3;margin:0;
}
.cta-band p{font-size:14.5px;color:rgba(239,234,225,.76);margin:14px 0 0;max-width:52ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn-ghost{color:#EFEAE1;border-color:rgba(239,234,225,.28);}
.cta-band .btn-ghost:hover{background:rgba(239,234,225,.1);border-color:rgba(239,234,225,.5);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-col-title{
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--ink-3);
  margin:0 0 16px;display:flex;align-items:center;justify-content:space-between;
}
.footer-col-arrow{display:none;font-size:16px;color:var(--ink-3);transition:transform .2s ease;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:var(--brand);color:#FAF8F4;}
.footer-brand .brand-name{font-weight:600;font-size:16px;}
.footer-desc{font-size:13.5px;line-height:1.8;color:var(--ink-2);margin:0 0 18px;max-width:34ch;}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:36px;height:36px;border-radius:8px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink-2);background:transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.footer-social a:hover{background:var(--bg);color:var(--brand);border-color:#D8D1C4;}
.footer-list{list-style:none;margin:0 0 16px;padding:0;}
.footer-list li{margin-bottom:10px;}
.footer-list a{
  position:relative;font-size:14px;color:var(--ink-2);text-decoration:none;transition:color .2s ease;
}
.footer-list a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--accent);transition:width .18s ease;
}
.footer-list a:hover{color:var(--accent);}
.footer-list a:hover::after{width:100%;}
.footer-note{font-size:12.5px;line-height:1.8;color:var(--ink-3);margin:0;}
.footer-bottom{
  margin-top:52px;border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s cubic-bezier(.16,.84,.44,1),transform .6s cubic-bezier(.16,.84,.44,1);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:960px;}
}
@media (max-width:1023px){
  :root{--section:80px;}
  .container{padding:0 24px;}
  .nav-links,.command-search,.nav-divider,.icon-btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{height:56px;gap:16px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:44px;padding-bottom:64px;}
  .article-toc{display:none;}
  .article-main{max-width:100%;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 32px;}
}
@media (max-width:767px){
  :root{--section:60px;}
  .container{padding:0 20px;}
  body{font-size:15.5px;}
  .article-head{padding:32px 0 28px;}
  .article-body{font-size:16.5px;line-height:1.9;}
  .article-body p{max-width:100%;}
  .card-grid{grid-template-columns:1fr;}
  .btn-block-mobile{width:100%;}
  .article-actions .btn{flex:1 1 auto;}
  .cta-band{padding:56px 0;}
  .site-footer{padding:36px 0 0;}
  .footer-grid{grid-template-columns:1fr;gap:0;}
  .footer-col{border-top:1px solid var(--line);}
  .footer-col.is-first{border-top:0;}
  .footer-col-title{
    font-size:15px;color:var(--ink);letter-spacing:0;margin:0;padding:18px 0;cursor:pointer;
  }
  .footer-col-arrow{display:block;}
  .footer-col.is-open .footer-col-arrow{transform:rotate(90deg);}
  .footer-col-body{display:none;padding-bottom:22px;}
  .footer-col.is-first .footer-col-body{display:block;}
  .footer-col.is-open .footer-col-body{display:block;}
  .footer-bottom{margin-top:28px;justify-content:flex-start;}
}
@media (max-width:480px){
  .container{padding:0 20px;}
  .article-title{font-size:26px;}
  .brand-name{font-size:16px;}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation:none !important;}
  .reveal{opacity:1;transform:none;transition:none;}
  .post-card:hover{transform:none;}
  .btn:hover{transform:none;}
  .post-card:hover img{transform:none;}
}

/* roulang page: category2 */
:root{
  --bg:#FAF8F4;
  --bg-alt:#F1ECE3;
  --line:#E4DED3;
  --ink:#16211C;
  --ink-2:#4A544E;
  --ink-3:#8A9188;
  --brand:#123B2F;
  --brand-deep:#0E1A16;
  --accent:#E8674A;
  --accent-hover:#D2543A;
  --mint:#7FB0A2;
  --ok:#2E7D5B;
  --warn:#B7791F;
  --err:#C0392B;
  --disabled:#C7C2B8;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(18,33,28,.06);
  --shadow-2:0 10px 28px -14px rgba(18,33,28,.22);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{font-family:var(--serif);margin:0;color:var(--ink);letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
input,select{font:inherit;color:inherit}
::selection{background:rgba(232,103,74,.18)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 通用元素 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11.5px;letter-spacing:.08em;font-weight:500;
  padding:4px 11px;border-radius:var(--r-pill);
  background:rgba(127,176,162,.2);color:var(--brand);
  border:1px solid rgba(127,176,162,.4);
}
.badge.is-dark{background:rgba(250,248,244,.12);color:#E9E4DA;border-color:rgba(250,248,244,.2)}
.badge.is-accent{background:rgba(232,103,74,.12);color:var(--accent-hover);border-color:rgba(232,103,74,.28)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn .arrow{display:inline-block;transition:transform .2s ease;font-family:var(--mono)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--brand);color:#FAF8F4;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--shadow-1)}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--brand)}
.btn-ghost:hover{background:var(--bg-alt)}
.btn-light{background:#FAF8F4;color:var(--brand)}
.btn-light:hover{background:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-outline-light{background:transparent;border-color:rgba(250,248,244,.34);color:#F3EFE7}
.btn-outline-light:hover{background:rgba(250,248,244,.1)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:active{transform:translateY(0)}
.btn[disabled],.btn.is-disabled{background:var(--disabled);color:var(--ink-3);cursor:not-allowed;box-shadow:none;transform:none}
.btn.is-loading{position:relative;color:transparent}
.btn.is-loading::after{
  content:"";position:absolute;left:50%;top:50%;width:16px;height:16px;margin:-8px 0 0 -8px;
  border:2px solid rgba(250,248,244,.45);border-top-color:#FAF8F4;border-radius:50%;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

.link-underline{position:relative;color:var(--brand);font-weight:500;display:inline-flex;align-items:center;gap:6px}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--accent);
  transition:width .18s ease;
}
.link-underline:hover{color:var(--accent)}
.link-underline:hover::after{width:100%}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg);border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 18px -14px rgba(18,33,28,.4)}
.header-inner{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:600;letter-spacing:-.01em;font-size:16.5px;color:var(--ink)}
.brand-mark{
  width:32px;height:32px;border-radius:8px;background:var(--brand);color:#F6F2EA;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:11.5px;font-weight:700;letter-spacing:.02em;
}
.brand-name{white-space:nowrap;font-family:var(--serif);font-weight:700}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:6px}
.nav-links a{
  position:relative;font-size:14.5px;color:var(--ink-2);padding:8px 0;line-height:1.4;
  transition:color .2s ease;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;background:var(--accent);
  transition:width .2s ease;
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--brand);font-weight:600}
.nav-links a.is-active::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.command-search{position:relative;display:flex;align-items:center}
.command-search svg{position:absolute;left:12px;color:var(--ink-3);pointer-events:none}
.command-search input{
  width:260px;height:40px;border-radius:var(--r-btn);
  background:var(--bg-alt);border:1px solid var(--line);
  padding:0 54px 0 36px;font-size:14px;color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.command-search input::placeholder{color:var(--ink-3)}
.command-search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(232,103,74,.18);background:#fff}
.kbd{
  position:absolute;right:10px;font-family:var(--mono);font-size:11px;color:var(--ink-3);
  border:1px solid var(--line);background:#fff;border-radius:6px;padding:2px 6px;line-height:1.4;
}
.nav-divider{width:1px;height:22px;background:var(--line)}
.icon-btn{
  width:40px;height:40px;border-radius:8px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:var(--bg-alt);color:var(--brand);border-color:#D9D2C5}
.menu-btn{display:none;width:40px;height:40px;border-radius:8px;border:1px solid var(--line);align-items:center;justify-content:center;color:var(--ink-2)}
.menu-btn:hover{background:var(--bg-alt)}
.menu-btn span{display:block;width:16px;height:1.6px;background:currentColor;position:relative}
.menu-btn span::before,.menu-btn span::after{
  content:"";position:absolute;left:0;width:16px;height:1.6px;background:currentColor;
}
.menu-btn span::before{top:-5px}
.menu-btn span::after{top:5px}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,26,22,.35);z-index:80;
  opacity:0;transition:opacity .24s ease;
}
.drawer-mask.is-open{opacity:1}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;z-index:90;
  background:var(--bg);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .28s cubic-bezier(.16,.84,.44,1);
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border-radius:8px;border:1px solid var(--line);font-size:20px;line-height:1;color:var(--ink-2)}
.drawer-nav{display:flex;flex-direction:column;margin-top:10px}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;font-size:15px;color:var(--ink-2);
  border-bottom:1px solid var(--line);transition:color .2s ease,padding-left .2s ease;
}
.drawer-nav a:hover{color:var(--brand);padding-left:6px}
.drawer-nav a.is-active{color:var(--brand);font-weight:600}
.drawer-cta{margin-top:auto}

/* ---------- 矮 Hero ---------- */
.page-hero{
  position:relative;padding:64px 0 68px;border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(to right,rgba(18,59,47,.05) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(18,59,47,.05) 1px,transparent 1px);
  background-size:28px 28px;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:end}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px}
.breadcrumb a{transition:color .2s ease}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span{color:var(--ink-3)}
.page-hero h1{font-size:clamp(32px,4.4vw,48px);font-weight:700;line-height:1.14;letter-spacing:-.02em;margin:14px 0 16px;max-width:16em}
.hero-lead{font-size:16.5px;color:var(--ink-2);max-width:34em;line-height:1.85}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.stat{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 16px;box-shadow:var(--shadow-1);
}
.stat-num{
  display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:700;color:var(--brand);line-height:1.05;
}
.stat-label{display:block;margin-top:8px;font-size:13px;color:var(--ink-3);line-height:1.5}

/* ---------- 板块 ---------- */
.section{padding:104px 0}
.section.is-tight{padding:72px 0}
.section.is-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:48px}
.section-head .eyebrow{
  font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.1em;
  display:block;margin-bottom:14px;
}
.section-head h2{font-size:clamp(26px,3.4vw,38px);font-weight:700;line-height:1.24}
.section-head p{margin-top:16px;color:var(--ink-2);font-size:16px}

/* ---------- 左右交替图文 ---------- */
.alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:48px 0;border-top:1px solid var(--line);
}
.alt-row:first-of-type{border-top:0;padding-top:0}
.alt-row.is-reverse .alt-media{order:2}
.alt-media{position:relative}
.alt-media img{width:100%;height:320px;object-fit:cover;box-shadow:var(--shadow-1)}
.alt-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-img);
  background-image:
    linear-gradient(to right,rgba(18,59,47,.07) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(18,59,47,.07) 1px,transparent 1px);
  background-size:22px 22px;pointer-events:none;
}
.alt-tag{
  position:absolute;left:14px;bottom:14px;z-index:2;
  font-size:11px;letter-spacing:.08em;padding:5px 10px;border-radius:var(--r-pill);
  background:rgba(14,26,22,.62);color:#F1ECE3;
}
.alt-body .step-no{
  font-family:var(--mono);font-size:13px;letter-spacing:.14em;color:var(--accent);
  display:block;margin-bottom:14px;
}
.alt-body h3{font-size:clamp(20px,2.2vw,24px);font-weight:600;line-height:1.35;margin-bottom:14px}
.alt-body p{color:var(--ink-2);margin-bottom:18px;max-width:34em}
.check-list{display:flex;flex-direction:column;gap:10px;margin-bottom:22px}
.check-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-2);line-height:1.75}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:1px;background:var(--mint);
}

/* ---------- 深色 CTA 条 ---------- */
.cta-band{background:var(--brand-deep);color:#EFEAE1;position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-40px;top:-40px;width:220px;height:220px;
  background-image:repeating-linear-gradient(135deg,rgba(250,248,244,.14) 0 1px,transparent 1px 9px);
  opacity:.5;
}
.cta-band .container{position:relative;z-index:2}
.cta-band-inner{
  display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;
  padding:64px 0;
}
.cta-band h2{color:#F7F3EB;font-size:clamp(24px,2.9vw,32px);line-height:1.3}
.cta-band p{margin-top:14px;font-size:14.5px;color:rgba(239,234,225,.76);max-width:30em}
.cta-band-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ---------- 相关条目 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D9D2C5}
.rel-card img{width:76px;height:76px;object-fit:cover;flex:0 0 76px}
.rel-card h3{font-size:16px;font-weight:600;line-height:1.45;margin:8px 0 8px}
.rel-card p{font-size:13.5px;color:var(--ink-2);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  min-height:64px;padding:16px 0;font-size:16.5px;font-weight:600;
  font-family:var(--serif);color:var(--ink);letter-spacing:-.01em;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-no{font-family:var(--mono);font-size:13px;color:var(--ink-3);flex:0 0 28px}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px;margin-left:auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-2);
  transition:transform .2s ease,background-color .2s ease;
}
.faq-icon::before{width:14px;height:1.5px;transform:translate(-50%,-50%)}
.faq-icon::after{width:1.5px;height:14px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-item.is-open .faq-q{color:var(--brand)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s ease}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a>div{overflow:hidden}
.faq-a p{padding:0 44px 22px 44px;font-size:15px;color:var(--ink-2);line-height:1.9}

/* ---------- 结尾 CTA ---------- */
.end-cta{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-card);
  padding:44px 48px;display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center;
}
.end-cta h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3}
.end-cta p{margin-top:14px;color:var(--ink-2);font-size:15px;max-width:32em}
.end-cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);margin-top:104px}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 44px;
}
.footer-col-title{
  font-family:var(--serif);font-size:15px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;margin:0 0 18px;
}
.footer-col-arrow{display:none;font-size:18px;color:var(--ink-3);transition:transform .2s ease}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-name{font-family:var(--serif);font-weight:700;font-size:16px}
.footer-desc{font-size:13.5px;color:var(--ink-2);line-height:1.8;max-width:26em}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:36px;height:36px;border-radius:8px;border:1px solid var(--line);background:var(--bg);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.footer-social a:hover{color:var(--brand);border-color:#D9D2C5}
.footer-list{display:flex;flex-direction:column;gap:12px}
.footer-list a{font-size:14px;color:var(--ink-2);transition:color .2s ease}
.footer-list a:hover{color:var(--accent)}
.footer-meta{margin-top:16px;font-size:13px;color:var(--ink-3);line-height:1.7}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s cubic-bezier(.16,.84,.44,1),transform .6s cubic-bezier(.16,.84,.44,1)}
.reveal.is-in{opacity:1;transform:translateY(0)}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
  .reveal{transform:none}
  .btn:hover,.rel-card:hover{transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:960px}
  .command-search input{width:200px}
  .nav-links{gap:20px}
}
@media (max-width:1023px){
  .nav-links,.command-search,.nav-divider,.icon-btn{display:none}
  .menu-btn{display:inline-flex}
  .header-inner{height:60px;gap:16px}
  .section{padding:80px 0}
  .hero-grid{grid-template-columns:1fr;gap:36px;align-items:start}
  .alt-row{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .alt-row.is-reverse .alt-media{order:0}
  .cta-band-inner{grid-template-columns:1fr;gap:28px;padding:52px 0}
  .cta-band-actions{justify-content:flex-start}
  .related-grid{grid-template-columns:1fr 1fr}
  .end-cta{grid-template-columns:1fr;gap:24px;padding:36px}
  .end-cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 36px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .site-header{position:sticky}
  .brand-name{font-size:15.5px}
  .page-hero{padding:44px 0 48px}
  .page-hero h1{font-size:clamp(28px,7vw,36px)}
  .hero-stats{grid-template-columns:1fr 1fr;gap:12px}
  .section{padding:60px 0}
  .section-head{margin-bottom:32px}
  .alt-media img{height:230px}
  .related-grid{grid-template-columns:1fr}
  .faq-a p{padding:0 0 20px 44px}
  .footer-grid{grid-template-columns:1fr;gap:0;padding:32px 0 24px}
  .footer-col{border-bottom:1px solid var(--line)}
  .footer-col-title{padding:18px 0;margin:0;cursor:pointer;min-height:56px}
  .footer-col-arrow{display:block}
  .footer-col.is-open .footer-col-arrow{transform:rotate(90deg)}
  .footer-col-body{padding-bottom:22px}
  .footer-col-body{display:none}
  .footer-col.is-open .footer-col-body{display:block}
  .footer-col.is-first .footer-col-body{display:block}
  .footer-col.is-first .footer-col-title{cursor:default}
  .footer-col.is-first .footer-col-arrow{display:none}
  .footer-bottom{flex-direction:column;padding:18px 0 24px}
  .end-cta{padding:28px 22px}
  .cta-band-actions .btn{width:100%}
}
@media (max-width:480px){
  .container{padding:0 20px}
  .hero-stats{grid-template-columns:1fr}
  .alt-media img{height:200px}
  .btn{width:100%}
  .cta-band-actions,.end-cta-actions{width:100%}
  .nav-actions .btn{width:auto}
}