/* roulang page: index */
/* ============ 设计令牌 ============ */
:root{
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --ink:#17141F;
  --brand:#241B3A;
  --deep:#14111C;
  --accent:#C9F24D;
  --accent-ink:#1A1F0A;
  --warn:#FF6A4D;
  --muted:#6E6879;
  --line:#E6E2DA;
  --r-s:10px;
  --r-m:16px;
  --r-l:22px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(23,20,31,.04);
  --shadow-2:0 12px 32px rgba(23,20,31,.08);
  --shadow-3:0 24px 60px rgba(23,20,31,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
  --font-title:"Noto Serif SC","Noto Sans SC","PingFang SC",serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter",ui-monospace,SFMono-Regular,Menlo,monospace;
}
/* ============ Reset / 基础 ============ */
*,*::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-body);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-title);font-weight:700;letter-spacing:-.01em;line-height:1.2}
h1{letter-spacing:-.02em;line-height:1.12}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;background:var(--ink);color:#fff;
  padding:12px 20px;border-radius:0 0 var(--r-s) 0;
}
.skip-link:focus{left:0}
::selection{background:var(--accent);color:var(--accent-ink)}
/* ============ 布局容器 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:104px 0}
.section-light{background:var(--bg)}
.section-white{background:var(--surface)}
.section-deep{background:var(--deep);color:#fff}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{font-size:36px;line-height:1.2}
.section-head p{margin-top:18px;color:var(--muted);font-size:17px}
.section-deep .section-head p{color:rgba(255,255,255,.66)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);margin-bottom:18px;font-family:var(--font-num);
}
.section-deep .eyebrow{color:rgba(255,255,255,.55)}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent)}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;font-family:var(--font-body);
  border:1px solid transparent;cursor:pointer;
  transition:background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease),filter 180ms var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--brand);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:scale(.98)}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{filter:brightness(.94);transform:translateY(-1px)}
.btn-accent:active{transform:scale(.98)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.24);color:#fff}
.btn-ghost-light:hover{border-color:#fff;background:rgba(255,255,255,.07)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;pointer-events:none}
/* ============ 徽章 / 胶囊 ============ */
.badge{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  padding:5px 13px;border-radius:var(--r-pill);border:1px solid var(--line);color:var(--muted);
  background:var(--surface);letter-spacing:.02em;white-space:nowrap;
}
.badge-dark{border-color:rgba(255,255,255,.2);color:rgba(255,255,255,.82);background:transparent}
.badge-soft{background:rgba(23,20,31,.04);border-color:transparent;color:var(--muted)}
.badge-new{background:var(--accent);color:var(--accent-ink);border-color:transparent;font-size:11px;padding:2px 8px}
.badge-dot{width:6px;height:6px;border-radius:2px;background:var(--accent);flex:0 0 6px}
.pill-row{display:flex;flex-wrap:wrap;gap:10px}
.pill{font-size:13px;padding:7px 16px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.78)}
.pill-light{border-color:var(--line);color:var(--muted);background:var(--surface)}
/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(247,245,241,.86);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow 180ms var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px;transition:height 180ms var(--ease)}
.site-header.is-scrolled .nav-inner{height:56px}
.logo{
  display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:19px;
  letter-spacing:-.02em;color:var(--ink);white-space:nowrap;font-family:var(--font-body);
}
.logo-dot{width:6px;height:6px;border-radius:2px;background:var(--accent);display:inline-block;flex:0 0 6px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  padding:8px 15px;border-radius:var(--r-pill);font-size:15px;font-weight:500;color:var(--muted);
  transition:color 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease);
  border:1px solid transparent;white-space:nowrap;
}
.nav-links a:hover{color:var(--ink);background:rgba(23,20,31,.05)}
.nav-links a.active{color:var(--ink);background:var(--surface);border-color:var(--line);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);
  cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color 180ms var(--ease);
}
.nav-toggle:hover{border-color:var(--ink)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:70;background:var(--deep);color:#fff;
  transform:translateX(100%);transition:transform 420ms var(--ease);
  display:flex;flex-direction:column;padding:20px 24px calc(24px + env(safe-area-inset-bottom));
  visibility:hidden;
}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px}
.drawer-head .logo{color:#fff}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.18);
  background:transparent;color:#fff;cursor:pointer;font-size:18px;line-height:1;
  transition:border-color 180ms var(--ease),background 180ms var(--ease);
}
.drawer-close:hover{border-color:#fff;background:rgba(255,255,255,.06)}
.drawer nav{margin-top:32px;display:flex;flex-direction:column;gap:4px}
.drawer nav a{
  font-size:26px;line-height:1.6;color:rgba(255,255,255,.84);padding:10px 0 10px 18px;position:relative;
  font-family:var(--font-title);font-weight:600;transition:color 180ms var(--ease);
}
.drawer nav a:hover{color:#fff}
.drawer nav a.is-active{color:#fff}
.drawer nav a.is-active::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:2px;background:var(--accent);
}
.drawer .btn{margin-top:auto;width:100%}
/* ============ Hero ============ */
.hero{
  position:relative;background:var(--deep);color:#fff;overflow:hidden;
  display:flex;align-items:center;padding:84px 0;min-height:72vh;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(760px 460px at 82% 10%,rgba(201,242,77,.10),transparent 62%),
             radial-gradient(620px 420px at 4% 96%,rgba(36,27,58,.85),transparent 72%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;width:100%}
.hero-copy h1{font-size:56px;line-height:1.12;letter-spacing:-.02em}
.hero-sub{margin-top:22px;font-size:18px;line-height:1.8;color:rgba(255,255,255,.72);max-width:530px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:36px;font-size:14px;color:rgba(255,255,255,.62)}
.hero-points li{display:flex;align-items:center;gap:9px}
.hero-points li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent);flex:0 0 6px}
.hero-visual{position:relative;border-radius:var(--r-l);overflow:hidden;border:1px solid rgba(255,255,255,.1)}
.hero-visual img{width:100%;height:440px;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,17,28,.12) 0%,rgba(20,17,28,.82) 100%);
}
.hero-visual figcaption{
  position:absolute;left:24px;right:24px;bottom:22px;z-index:2;font-size:13px;color:rgba(255,255,255,.82);
}
.hero-visual figcaption strong{display:block;font-size:15px;margin-bottom:4px;color:#fff;font-weight:600}
/* 图片失败占位 */
.img-fallback{position:relative;background:var(--brand);min-height:180px}
.img-fallback::after{
  content:attr(data-watermark);position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.35);font-size:28px;font-weight:800;letter-spacing:.08em;font-family:var(--font-title);
  border:1px solid rgba(255,255,255,.12);border-radius:inherit;
}
/* ============ 卖点区 ============ */
.value-grid{display:grid;grid-template-columns:320px 1fr;gap:64px;align-items:start}
.value-aside{position:sticky;top:104px}
.value-aside h2{font-size:36px;line-height:1.2}
.value-aside p{margin-top:18px;color:var(--muted);font-size:16px}
.value-aside .btn{margin-top:28px}
.value-list li{
  display:grid;grid-template-columns:52px 1fr;gap:20px;
  padding:28px 16px 28px 0;border-top:1px solid var(--line);
  transition:background 180ms var(--ease);
}
.value-list li:last-child{border-bottom:1px solid var(--line)}
.value-list li:hover{background:rgba(23,20,31,.03)}
.value-num{
  font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--accent-ink);
  background:var(--accent);width:38px;height:26px;border-radius:6px;
  display:flex;align-items:center;justify-content:center;letter-spacing:.04em;
}
.value-list h3{font-size:20px;line-height:1.4}
.value-list p{margin-top:10px;color:var(--muted);font-size:16px;max-width:640px}
/* ============ 演示区 ============ */
.demo-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.demo-tab{
  font-size:14px;padding:8px 18px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.7);
  transition:all 180ms var(--ease);
}
.demo-tab:hover{border-color:rgba(255,255,255,.4);color:#fff}
.demo-tab.is-active{background:#fff;color:var(--ink);border-color:#fff;font-weight:600}
.demo-frame{position:relative;border-radius:var(--r-l);overflow:hidden;border:1px solid rgba(255,255,255,.1)}
.demo-frame img{width:100%;height:460px;object-fit:cover}
.demo-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(90deg,rgba(20,17,28,.88) 0%,rgba(20,17,28,.42) 52%,rgba(20,17,28,.05) 100%);
}
.demo-caption{position:absolute;left:40px;bottom:40px;right:40px;max-width:400px;z-index:2}
.demo-caption strong{display:block;font-size:21px;margin-bottom:10px;font-family:var(--font-title)}
.demo-caption span{font-size:15px;color:rgba(255,255,255,.72);line-height:1.75}
.demo-frame .pill-row{position:absolute;left:40px;top:36px;z-index:2}
.demo-bottom{margin-top:28px}
/* ============ 通用 CTA 条 ============ */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:26px 32px;border:1px solid var(--line);border-radius:var(--r-m);
  background:var(--surface);margin-top:48px;
}
.cta-bar h3{font-size:19px;font-weight:600;font-family:var(--font-body)}
.cta-bar p{margin-top:6px;font-size:15px;color:var(--muted)}
.cta-bar.dark{border-color:rgba(255,255,255,.12);background:rgba(255,255,255,.04)}
.cta-bar.dark h3{color:#fff}
.cta-bar.dark p{color:rgba(255,255,255,.66)}
/* ============ 证据区 ============ */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stat{padding:34px 26px;border-right:1px solid var(--line);transition:background 180ms var(--ease)}
.stat:last-child{border-right:0}
.stat:hover{background:rgba(23,20,31,.02)}
.stat b{
  display:block;font-family:var(--font-num);font-size:44px;font-weight:700;line-height:1;
  letter-spacing:-.02em;font-variant-numeric:tabular-nums;
}
.stat b em{font-style:normal;font-size:17px;color:var(--muted);margin-left:5px;font-family:var(--font-body);font-weight:500}
.stat i{display:block;width:22px;height:3px;border-radius:2px;background:var(--accent);margin-top:14px}
.stat span{display:block;margin-top:12px;font-size:13px;color:var(--muted);line-height:1.7}
.case-scroll{
  display:flex;gap:24px;overflow-x:auto;margin-top:48px;padding-bottom:10px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.case-scroll::-webkit-scrollbar{display:none}
.case-card{
  flex:0 0 320px;border:1px solid var(--line);border-radius:var(--r-m);background:var(--surface);
  overflow:hidden;transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.case-card img{width:100%;height:168px;object-fit:cover}
.case-card .body{padding:22px}
.case-card h3{font-size:18px;line-height:1.45}
.case-card p{margin-top:10px;font-size:15px;color:var(--muted)}
/* ============ 资讯区（CMS） ============ */
.news-grid{display:grid;grid-template-columns:300px 1fr;gap:56px;align-items:start}
.news-aside{position:sticky;top:104px}
.news-aside h2{font-size:36px}
.news-aside p{margin-top:18px;color:var(--muted);font-size:16px}
.news-aside .btn{margin-top:26px}
.news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.news-card .thumb{display:block;overflow:hidden}
.news-card img{width:100%;aspect-ratio:16/10;height:auto;object-fit:cover;background:var(--brand)}
.news-card .body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;min-width:0}
.news-card h3{font-size:18px;line-height:1.5;font-family:var(--font-body);font-weight:600}
.news-card h3 a{transition:color 180ms var(--ease)}
.news-card h3 a:hover{color:var(--brand)}
.news-card .excerpt{
  font-size:15px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;
}
.news-meta .more{color:var(--ink);font-weight:600}
.empty-state{
  grid-column:1/-1;border:1px dashed var(--line);border-radius:var(--r-m);
  padding:64px 24px;text-align:center;background:var(--surface);
}
.empty-state .empty-mark{
  font-family:var(--font-title);font-size:24px;font-weight:700;color:rgba(23,20,31,.16);
  letter-spacing:.06em;margin-bottom:12px;
}
.empty-state p{color:var(--muted);font-size:15px}
.empty-state .btn{margin-top:22px}
/* ============ 价格区 ============ */
.price-grid{display:grid;grid-template-columns:1fr 470px;gap:64px;align-items:center}
.price-copy h2{font-size:36px;line-height:1.2}
.price-copy p{margin-top:18px;color:var(--muted);font-size:16px;max-width:460px}
.price-copy ul{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px}
.plans{display:flex;flex-direction:column;gap:24px}
.plan{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-l);padding:32px;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.plan.recommend{border:2px solid var(--accent);box-shadow:var(--shadow-2);margin-right:36px}
.plan .plan-tag{
  position:absolute;top:-13px;left:32px;background:var(--accent);color:var(--accent-ink);
  font-size:12px;font-weight:700;padding:4px 12px;border-radius:var(--r-pill);
}
.plan h3{font-size:20px;font-family:var(--font-body);font-weight:600}
.plan .plan-price{
  font-family:var(--font-num);font-size:40px;font-weight:700;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;margin:16px 0 4px;line-height:1.1;
}
.plan .plan-price em{font-style:normal;font-size:15px;color:var(--muted);margin-left:6px;font-family:var(--font-body);font-weight:400}
.plan .plan-desc{font-size:14px;color:var(--muted)}
.plan ul{margin-top:22px;border-top:1px solid var(--line);padding-top:20px}
.plan ul li{position:relative;padding-left:26px;font-size:15px;color:var(--muted);margin-top:12px}
.plan ul li:first-child{margin-top:0}
.plan ul li::before{
  content:"";position:absolute;left:2px;top:11px;width:12px;height:6px;
  border-left:2px solid var(--ink);border-bottom:2px solid var(--ink);
  transform:rotate(-45deg);border-radius:1px;
}
.plan .btn{width:100%;margin-top:26px}
/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 4px;font-size:18px;font-weight:600;cursor:pointer;list-style:none;
  transition:color 180ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::after{
  content:"";flex:0 0 14px;width:14px;height:14px;
  background:
    linear-gradient(var(--ink),var(--ink)) center/14px 2px no-repeat,
    linear-gradient(var(--ink),var(--ink)) center/2px 14px no-repeat;
  transition:transform 180ms var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .answer{padding:0 4px 28px;font-size:15px;line-height:1.8;color:var(--muted);max-width:840px}
/* ============ 尾部 CTA + 表单 ============ */
.final{background:var(--deep);color:#fff;padding:96px 0}
.final-grid{display:grid;grid-template-columns:1fr 470px;gap:64px;align-items:start}
.final-copy h2{font-size:36px;line-height:1.2}
.final-copy p{margin-top:18px;color:rgba(255,255,255,.68);font-size:16px;max-width:480px}
.final-list{margin-top:32px;display:flex;flex-direction:column;gap:14px}
.final-list li{display:flex;align-items:center;gap:12px;font-size:15px;color:rgba(255,255,255,.72)}
.final-list li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent);flex:0 0 6px}
.form-card{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-l);padding:32px;
}
.form-card h3{font-size:20px;font-family:var(--font-body);font-weight:600;color:#fff}
.form-card .form-note{margin-top:8px;font-size:13px;color:rgba(255,255,255,.55)}
.field{margin-top:18px}
.field label{display:block;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:8px}
.field input,.field select{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-s);
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.04);color:#fff;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease);
  appearance:none;
}
.field select{background-image:linear-gradient(45deg,transparent 50%,rgba(255,255,255,.6) 50%),linear-gradient(135deg,rgba(255,255,255,.6) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field select option{color:#17141F}
.field input::placeholder{color:rgba(255,255,255,.36)}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(201,242,77,.35);background:rgba(255,255,255,.07)}
.field.error input,.field.error select{border-color:var(--warn)}
.field-error{display:none;margin-top:6px;font-size:12px;color:var(--warn)}
.field.error .field-error{display:block}
.form-card .btn{width:100%;margin-top:24px}
.form-card .form-foot{margin-top:14px;font-size:12px;color:rgba(255,255,255,.45);text-align:center}
/* ============ 页脚 ============ */
.site-footer{
  background:var(--deep);color:#fff;border-top:1px solid rgba(255,255,255,.08);
  padding:72px 0 32px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{color:#fff;font-size:20px}
.footer-brand .slogan{margin-top:16px;font-size:14px;color:rgba(255,255,255,.6);max-width:290px;line-height:1.9}
.footer-brand .btn{margin-top:20px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;font-family:var(--font-body)}
.footer-col a{display:block;font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);transition:color 180ms var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6)}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:60;
  display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 22px;
  border-radius:var(--r-pill);background:var(--brand);color:#fff;
  font-size:15px;font-weight:600;box-shadow:var(--shadow-3);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity 420ms var(--ease),transform 420ms var(--ease),background 180ms var(--ease);
}
.float-cta.is-visible{opacity:1;transform:none;pointer-events:auto}
.float-cta:hover{background:#332852}
.float-cta .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:0 0 8px}
.mobile-cta{display:none}
/* ============ 入场动画 ============ */
.reveal{transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
html.js .reveal:not(.is-visible){opacity:0;transform:translateY(12px)}
/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-copy h1{font-size:48px}
  .price-grid,.final-grid{grid-template-columns:1fr 420px;gap:48px}
  .plan.recommend{margin-right:24px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:80px 0}
  .nav-links{display:none}
  .nav-actions .btn{display:none}
  .nav-toggle{display:flex}
  .hero{padding:64px 0;min-height:auto}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-copy h1{font-size:40px}
  .hero-visual img{height:320px}
  .value-grid,.news-grid,.price-grid,.final-grid{grid-template-columns:1fr;gap:40px}
  .value-aside,.news-aside{position:static}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .plan.recommend{margin-right:0}
  .demo-frame img{height:360px}
  .demo-caption{left:24px;right:24px;bottom:24px}
  .demo-frame .pill-row{left:24px;top:24px}
  .float-cta{display:none}
  .mobile-cta{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;
    align-items:center;justify-content:space-between;gap:12px;
    padding:9px 16px calc(9px + env(safe-area-inset-bottom));
    background:rgba(20,17,28,.96);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
    border-top:1px solid rgba(255,255,255,.1);color:#fff;
  }
  .mobile-cta span{font-size:13px;color:rgba(255,255,255,.72);line-height:1.4}
  .site-footer{padding-bottom:104px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:26px}
  .hero-copy h1{font-size:34px}
  .hero-sub{font-size:16px;margin-top:18px}
  .hero-actions .btn{width:100%}
  .hero-visual img{height:240px}
  .value-aside h2,.news-aside h2,.price-copy h2,.final-copy h2{font-size:26px}
  .value-list li{grid-template-columns:1fr;gap:12px;padding:24px 12px 24px 0}
  .value-list h3{font-size:18px}
  .news-list{grid-template-columns:1fr}
  .demo-frame img{height:280px}
  .demo-frame .pill-row{position:static;padding:20px 20px 0}
  .demo-caption{position:static;padding:20px;max-width:none;background:var(--deep)}
  .demo-frame::after{display:none}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--line);padding:26px 4px}
  .stat:last-child{border-bottom:0}
  .stat b{font-size:36px}
  .cta-bar{padding:22px 20px}
  .final{padding:64px 0}
  .form-card{padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{margin-top:40px;font-size:12px}
  .case-card{flex:0 0 260px}
  .plan{padding:26px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  html.js .reveal:not(.is-visible){opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --ink:#17141F;
  --brand:#241B3A;
  --deep:#14111C;
  --accent:#C9F24D;
  --accent-ink:#1A1F0A;
  --warn:#FF6A4D;
  --muted:#6E6879;
  --line:#E6E2DA;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --shadow-1:0 1px 2px rgba(23,20,31,.04);
  --shadow-2:0 12px 32px rgba(23,20,31,.08);
  --shadow-3:0 24px 60px rgba(23,20,31,.12);
  --sans:"Noto Sans SC","Inter","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --serif:"Noto Serif SC","Songti SC",Georgia,serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:68px;
}
*,*::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:17px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:64px 0}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,241,.86);
  backdrop-filter:saturate(140%) blur(12px);
  -webkit-backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{
  height:var(--nav-h);
  display:flex;align-items:center;gap:24px;
  transition:height .24s var(--ease);
}
.site-header.is-scrolled .header-inner{height:56px}
.logo{
  display:inline-flex;align-items:center;
  font-weight:800;font-size:18px;letter-spacing:-.02em;color:var(--ink);
  white-space:nowrap;
}
.logo-dot{width:6px;height:6px;background:var(--accent);border-radius:2px;margin-left:6px;flex:none}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-links a{
  position:relative;
  padding:9px 16px;border-radius:999px;
  font-size:15px;font-weight:500;color:#4C4658;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.nav-links a:hover{background:rgba(23,20,31,.05);color:var(--ink)}
.nav-links a.active{background:var(--ink);color:#fff}
.header-cta{margin-left:8px}
.menu-toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;margin-left:auto;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s var(--ease);
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
.mobile-drawer{
  position:fixed;inset:0 0 0 auto;width:min(88vw,400px);
  background:var(--deep);z-index:90;
  transform:translateX(102%);
  transition:transform .3s var(--ease);
  display:flex;flex-direction:column;
  padding:28px 28px calc(28px + env(safe-area-inset-bottom));
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}
.drawer-head .logo{color:#fff}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.16);color:#fff;font-size:20px;line-height:1}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin-bottom:auto}
.drawer-links a{
  color:rgba(255,255,255,.92);font-size:24px;line-height:1.6;font-weight:600;
  padding:10px 0 10px 16px;border-left:3px solid transparent;
}
.drawer-links a:hover{color:#fff;border-left-color:rgba(201,242,77,.5)}
.drawer-links a.active{border-left-color:var(--accent);color:#fff}
.drawer-cta{margin-top:32px}
.overlay{position:fixed;inset:0;background:rgba(20,17,28,.5);opacity:0;pointer-events:none;transition:opacity .3s var(--ease);z-index:85}
.overlay.is-open{opacity:1;pointer-events:auto}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--brand);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{filter:brightness(.94);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.22);color:#fff}
.btn-ghost-light:hover{border-color:var(--accent);color:var(--accent)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- Article layout ---------- */
.page-head{padding:48px 0 0}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb .sep{color:#C4BFB5}
.breadcrumb .current{color:var(--ink);font-weight:500}

.article-shell{padding:24px 0 88px}
.article-head{border-bottom:1px solid var(--line);padding-bottom:28px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  border:1px solid rgba(36,27,58,.28);color:var(--brand);
  border-radius:999px;padding:5px 12px;background:rgba(201,242,77,.14);
}
.article-head h1{
  font-family:var(--serif);
  font-size:40px;line-height:1.25;letter-spacing:-.02em;
  margin:18px 0 20px;max-width:880px;
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;
  font-size:14px;color:var(--muted);
}
.article-meta .dot{width:6px;height:6px;border-radius:2px;background:var(--accent)}
.meta-share{margin-left:auto;display:flex;gap:10px}
.meta-share span{
  width:34px;height:34px;border-radius:10px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--muted);background:var(--surface);
}

.article-body{
  max-width:760px;margin:40px auto 0;
  font-size:17px;line-height:1.9;color:#241F30;
  overflow-wrap:break-word;
}
.article-body > * + *{margin-top:1.1em}
.article-body h2{
  position:relative;
  font-family:var(--serif);
  font-size:28px;line-height:1.35;letter-spacing:-.01em;
  margin-top:48px;margin-bottom:16px;padding-left:16px;color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;
  background:var(--accent);border-radius:2px;
}
.article-body h3{font-size:21px;font-weight:600;line-height:1.5;margin-top:32px;margin-bottom:12px;color:var(--ink)}
.article-body h4{font-size:18px;font-weight:600;margin-top:24px}
.article-body p{margin:0}
.article-body strong{font-weight:700;background:rgba(36,27,58,.09);padding:0 3px;border-radius:4px}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:#4A3A72}
.article-body blockquote{
  border-left:2px solid var(--brand);background:#F2EFE9;
  padding:16px 22px;border-radius:0 12px 12px 0;font-size:16px;color:#3E3849;
}
.article-body ul{list-style:none;padding-left:0}
.article-body ul li{position:relative;padding-left:20px}
.article-body ul li + li{margin-top:8px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;
  background:var(--accent);border-radius:1.5px;
}
.article-body ol{list-style:decimal;padding-left:24px}
.article-body ol li{padding-left:4px}
.article-body ol li + li{margin-top:8px}
.article-body ol li::marker{color:var(--brand);font-weight:700;font-variant-numeric:tabular-nums}
.article-body img{border-radius:16px;margin:32px auto;width:100%;height:auto;object-fit:cover}
.article-body figure{margin:32px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;line-height:1.7;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th{background:#F2EFE9;text-align:left;font-weight:600;padding:12px 14px;border-bottom:1px solid var(--line)}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:48px}
.tag{
  display:inline-flex;align-items:center;
  font-size:13px;color:#4C4658;
  border:1px solid var(--line);border-radius:999px;
  padding:6px 14px;background:var(--surface);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.tag:hover{border-color:var(--brand);color:var(--brand)}

.article-foot{
  max-width:760px;margin:36px auto 0;
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  border-top:1px solid var(--line);padding-top:28px;
}

.empty-state{
  max-width:760px;margin:48px auto 0;
  border:1px dashed #C9C3B8;border-radius:var(--r-lg);
  padding:64px 32px;text-align:center;background:rgba(255,255,255,.6);
}
.empty-mark{
  width:64px;height:64px;border-radius:18px;background:var(--brand);color:var(--accent);
  display:flex;align-items:center;justify-content:center;margin:0 auto 20px;
  font-family:var(--serif);font-size:28px;
}
.empty-state h2{font-family:var(--serif);font-size:24px;margin-bottom:10px}
.empty-state p{color:var(--muted);margin-bottom:24px}

/* ---------- Related ---------- */
.related{padding:72px 0;background:var(--surface);border-top:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;margin-bottom:36px}
.section-head h2{font-family:var(--serif);font-size:32px;line-height:1.25;letter-spacing:-.01em}
.section-head p{font-size:15px;color:var(--muted);max-width:520px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .18s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D9D3C7}
.card-thumb{position:relative;aspect-ratio:16/10;background:var(--brand);overflow:hidden}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease)}
.card:hover .card-thumb img{transform:scale(1.04)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:19px;line-height:1.45;font-weight:600}
.card-body p{font-size:15px;color:var(--muted);line-height:1.8}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);padding-top:6px}

/* ---------- CTA ---------- */
.cta{background:var(--deep);color:#fff;padding:96px 0}
.cta .container{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.cta h2{font-family:var(--serif);font-size:36px;line-height:1.2;letter-spacing:-.01em;margin-bottom:16px}
.cta p{color:rgba(255,255,255,.7);font-size:16px;max-width:460px}
.cta-form{
  border:1px solid rgba(255,255,255,.1);border-radius:var(--r-lg);
  padding:28px;background:rgba(255,255,255,.03);
  display:grid;gap:14px;
}
.cta-form label{font-size:13px;color:rgba(255,255,255,.62);display:block;margin-bottom:6px}
.field input,.field select{
  width:100%;height:48px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);
  color:#fff;padding:0 14px;font-size:15px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field input::placeholder{color:rgba(255,255,255,.4)}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(201,242,77,.35);
}
.field select option{color:#17141F}
.field.error input{border-color:var(--warn)}
.field .hint{font-size:12px;color:var(--warn);margin-top:6px;display:none}
.field.error .hint{display:block}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:#fff;border-top:1px solid rgba(255,255,255,.08);padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px}
.footer-brand .logo{color:#fff;font-size:19px}
.footer-brand .slogan{color:rgba(255,255,255,.62);font-size:14px;line-height:1.9;margin:16px 0 20px;max-width:320px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-col a,.footer-col p{display:block;font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);margin:0}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding-top:24px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- Floating CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:60;
  display:inline-flex;align-items:center;gap:10px;
  height:52px;padding:0 22px;border-radius:999px;
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--shadow-3);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .42s var(--ease),transform .42s var(--ease),background-color .18s var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{background:#31264D}
.float-cta .dot{width:8px;height:8px;border-radius:999px;background:var(--accent)}

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

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

@media (max-width:1023px){
  .nav-links,.header-cta{display:none}
  .menu-toggle{display:inline-flex}
  .container{padding:0 24px}
  .section{padding:72px 0}
  .cta .container{grid-template-columns:1fr;gap:36px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .article-head h1{font-size:32px}
  .article-body h2{font-size:25px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:64px 0}
  .article-head h1{font-size:28px}
  .article-body{font-size:16px}
  .article-body h2{font-size:23px;margin-top:40px}
  .article-body h3{font-size:19px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta{padding:64px 0}
  .cta h2{font-size:26px}
  .float-cta{
    left:0;right:0;bottom:0;width:100%;height:56px;border-radius:0;
    justify-content:center;padding-bottom:env(safe-area-inset-bottom);
  }
  .site-footer{padding-bottom:96px}
}
@media (max-width:519px){
  .article-meta{gap:12px}
  .meta-share{margin-left:0;width:100%}
  .article-foot{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
/* ===== 设计令牌 ===== */
:root{
  --bg:#F7F5F1; --surface:#FFFFFF; --ink:#17141F; --brand:#241B3A; --deep:#14111C;
  --accent:#C9F24D; --accent-ink:#1A1F0A; --warn:#FF6A4D; --muted:#6E6879; --line:#E6E2DA;
  --r-sm:10px; --r-md:16px; --r-lg:22px; --r-pill:999px;
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px; --s9:96px; --s10:120px;
  --shadow-1:0 1px 2px rgba(23,20,31,.04);
  --shadow-2:0 12px 32px rgba(23,20,31,.08);
  --shadow-3:0 24px 60px rgba(23,20,31,.12);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}
/* ===== reset / base ===== */
*,*::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:17px;line-height:1.85;font-weight:400;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:-.01em;line-height:1.2}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:var(--accent);color:var(--accent-ink)}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 var(--r-sm) 0;z-index:999}
.skip:focus{left:0}

/* ===== 通用组件 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-pill);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:background-color .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--brand);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.btn-ghost:active{transform:scale(.98)}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{filter:brightness(.94);transform:translateY(-1px)}
.btn-accent:active{transform:scale(.98)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost-light:hover{border-color:var(--accent);color:var(--accent)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.pill{display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 16px;border-radius:var(--r-pill);border:1px solid var(--line);font-size:14px;color:var(--muted);background:var(--surface);transition:color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease)}
.pill:hover{color:var(--ink);border-color:var(--ink);transform:translateY(-1px)}
.pill.is-on{border-color:var(--accent);color:var(--ink);background:rgba(201,242,77,.14)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);border:1px solid var(--line);font-size:12px;color:var(--muted);letter-spacing:.02em;background:var(--surface)}
.badge-accent{border-color:var(--accent);color:var(--accent-ink);background:rgba(201,242,77,.24)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.14em;color:var(--muted)}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:1px;background:var(--accent)}
.sec-head{max-width:760px;margin-bottom:var(--s7)}
.sec-head h2{font-size:36px;margin-bottom:var(--s4)}
.sec-head p{color:var(--muted);margin:0}
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ===== 导航 ===== */
.site-header{position:sticky;top:0;z-index:80;background:rgba(247,245,241,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .18s var(--ease)}
.site-header.scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:var(--s5);height:68px;transition:height .18s var(--ease)}
.site-header.scrolled .header-inner{height:56px}
.logo{display:inline-flex;align-items:center;gap:8px;font-size:20px;font-weight:800;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.logo-dot{width:6px;height:6px;border-radius:1px;background:var(--accent)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{padding:8px 14px;border-radius:var(--r-pill);font-size:15px;font-weight:500;color:var(--muted);transition:color .18s var(--ease),background-color .18s var(--ease)}
.nav-links a:hover{color:var(--ink);background:rgba(23,20,31,.05)}
.nav-links a.active{color:var(--ink);background:rgba(23,20,31,.07);font-weight:600}
.header-actions{display:flex;align-items:center;gap:var(--s3)}
.menu-btn{display:none;width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface);align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer}
.menu-btn span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .18s var(--ease)}
.drawer{position:fixed;inset:0;background:var(--deep);z-index:90;transform:translateX(100%);transition:transform .32s var(--ease);display:flex;flex-direction:column;padding:24px 24px calc(24px + env(safe-area-inset-bottom));overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}
.drawer .logo{color:#fff}
.drawer-close{width:44px;height:44px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.2);background:transparent;color:#fff;font-size:20px;cursor:pointer}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{color:#fff;font-size:28px;line-height:1.6;padding:8px 0 8px 16px;border-left:3px solid transparent}
.drawer-nav a.active{border-left-color:var(--accent);font-weight:600}
.drawer-cta{margin-top:auto;padding-top:32px}
.drawer-cta .btn{width:100%}

/* ===== 面包屑 ===== */
.crumb-bar{background:var(--bg);border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:14px 0}
.crumb a:hover{color:var(--ink)}
.crumb .sep{color:var(--line)}
.crumb .now{color:var(--ink)}

/* ===== 页头 ===== */
.page-hero{position:relative;background:var(--deep);color:#fff;overflow:hidden}
.page-hero .hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.3}
.page-hero .hero-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,17,28,.7) 0%,rgba(20,17,28,.94) 100%)}
.page-hero .inner{position:relative;padding:88px 0 72px;scroll-margin-top:90px}
.page-hero .eyebrow{color:rgba(255,255,255,.7)}
.page-hero h1{font-size:56px;line-height:1.12;letter-spacing:-.02em;margin:20px 0 20px;max-width:900px}
.page-hero h1 .h1-sub{display:block;font-family:var(--sans);font-size:15px;font-weight:500;letter-spacing:.1em;color:var(--accent);margin-bottom:14px}
.page-hero .lead{font-size:18px;line-height:1.85;color:rgba(255,255,255,.78);max-width:720px;margin-bottom:var(--s6)}
.hero-pills{display:flex;flex-wrap:wrap;gap:12px}
.page-hero .pill{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.22);color:rgba(255,255,255,.8)}
.page-hero .pill:hover{color:#fff;border-color:#fff;background:rgba(255,255,255,.1)}
.page-hero .pill.is-on{border-color:var(--accent);color:var(--accent);background:rgba(201,242,77,.12)}
.hero-facts{display:flex;flex-wrap:wrap;gap:var(--s7);margin-top:var(--s8);padding-top:var(--s6);border-top:1px solid rgba(255,255,255,.1)}
.hero-facts div{min-width:140px}
.hero-facts b{display:block;font-family:var(--sans);font-size:30px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.hero-facts span{font-size:13px;color:rgba(255,255,255,.6)}

/* ===== 主体：左窄右宽 ===== */
.cat-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:56px;padding:88px 0 96px}
.subnav{position:sticky;top:96px;align-self:start}
.subnav-title{font-size:13px;letter-spacing:.14em;color:var(--muted);margin-bottom:var(--s4)}
.subnav a{display:block;padding:10px 0 10px 16px;border-left:2px solid var(--line);font-size:15px;color:var(--muted);transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease)}
.subnav a:hover{color:var(--ink);background:rgba(23,20,31,.03)}
.subnav a.active{color:var(--ink);font-weight:600;border-left-color:var(--accent)}
.subnav-note{margin-top:var(--s6);padding:var(--s4);border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);font-size:14px;color:var(--muted);line-height:1.8}
.subnav-note .btn{margin-top:var(--s4);width:100%}

.list-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:var(--s4);margin-bottom:var(--s5)}
.list-head h2{font-size:30px}
.list-head span{font-size:14px;color:var(--muted)}
.topic-list{border-bottom:1px solid var(--line)}
.topic-row{display:grid;grid-template-columns:160px minmax(0,1fr);gap:28px;padding:28px 8px;border-top:1px solid var(--line);scroll-margin-top:96px;transition:background-color .18s var(--ease)}
.topic-row:hover{background:rgba(23,20,31,.03)}
.thumb{width:160px;height:112px;border-radius:var(--r-sm);overflow:hidden;background:var(--brand);border:1px solid var(--line);position:relative}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb.fallback::after{content:"游";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.28);font-family:var(--serif);font-size:40px}
.topic-body h3{font-size:20px;margin:10px 0 8px}
.topic-body p{color:var(--muted);font-size:15px;line-height:1.8;margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.topic-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-size:13px;color:var(--muted)}
.topic-meta .more{margin-left:auto;color:var(--ink);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.topic-meta .more::after{content:"→";transition:transform .18s var(--ease)}
.topic-row:hover .topic-meta .more::after{transform:translateX(3px)}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:6px}

/* ===== 阅读方式 / 内容分区 ===== */
.section{padding:96px 0}
.section-surface{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.prose-cols{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;margin-bottom:var(--s8)}
.prose-cols p{font-size:16px;color:var(--muted);line-height:1.9}
.prose-cols p strong{color:var(--ink);font-weight:600}
.num-list{border-top:1px solid var(--line)}
.num-item{display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;padding:26px 0;border-bottom:1px solid var(--line);align-items:start}
.num-item b{font-family:var(--sans);font-size:15px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:.06em;padding-top:4px}
.num-item b::before{content:"";display:block;width:6px;height:6px;border-radius:1px;background:var(--accent);margin-bottom:8px}
.num-item h3{font-size:19px;margin-bottom:6px}
.num-item p{margin:0;color:var(--muted);font-size:15px}

/* ===== FAQ ===== */
.faq-wrap{max-width:880px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{position:relative;list-style:none;cursor:pointer;padding:22px 52px 22px 0;font-size:18px;font-weight:600;line-height:1.6}
.faq-item summary::-webkit-details-marker{display:none}
.faq-mark{position:absolute;right:6px;top:28px;width:14px;height:14px;transition:transform .18s var(--ease)}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--ink);border-radius:2px}
.faq-mark::before{left:0;top:6px;width:14px;height:2px}
.faq-mark::after{left:6px;top:0;width:2px;height:14px}
.faq-item[open] .faq-mark{transform:rotate(45deg)}
.faq-item summary:hover{color:var(--brand)}
.faq-item .answer{padding:0 52px 24px 0;font-size:15px;line-height:1.8;color:var(--muted);margin:0}

/* ===== CTA 条 ===== */
.cta-band{background:var(--deep);color:#fff;padding:80px 0;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(201,242,77,.16),transparent 68%)}
.cta-inner{position:relative;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:48px;align-items:center}
.cta-inner h2{font-size:36px;margin-bottom:var(--s4)}
.cta-inner p{color:rgba(255,255,255,.72);margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}

/* ===== 页脚 ===== */
.site-footer{background:var(--deep);color:#fff;border-top:1px solid rgba(255,255,255,.08);padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand .slogan{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);margin-bottom:20px;max-width:340px}
.footer-col h4{font-family:var(--sans);font-size:14px;font-weight:600;letter-spacing:.04em;margin-bottom:16px;color:#fff}
.footer-col a,.footer-col p{display:block;font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);margin:0 0 6px;transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);font-size:13px;color:rgba(255,255,255,.55)}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .page-hero h1{font-size:48px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links,.header-actions .btn{display:none}
  .menu-btn{display:flex}
  .cat-layout{grid-template-columns:1fr;gap:32px;padding:64px 0 72px}
  .subnav{position:static;display:flex;flex-wrap:wrap;gap:8px;padding-bottom:8px}
  .subnav-title{display:none}
  .subnav a{border-left:none;border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 16px;font-size:14px;background:var(--surface)}
  .subnav a.active{border-color:var(--accent);background:rgba(201,242,77,.14)}
  .subnav-note{width:100%}
  .prose-cols{grid-template-columns:1fr;gap:24px}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:64px 0}
  .page-hero .inner{padding:56px 0 52px}
  .page-hero h1{font-size:34px}
  .page-hero .lead{font-size:16px}
  .sec-head h2,.cta-inner h2{font-size:26px}
  .hero-facts{gap:24px;margin-top:40px}
  .hero-facts b{font-size:24px}
  .topic-row{grid-template-columns:1fr;gap:16px;padding:24px 0}
  .thumb{width:100%;height:180px}
  .topic-body h3{font-size:18px}
  .topic-meta .more{margin-left:0;width:100%}
  .num-item{grid-template-columns:44px minmax(0,1fr);gap:14px}
  .faq-item summary{font-size:16px;padding-right:44px}
  .list-head h2{font-size:24px}
}
@media (max-width:519px){
  .container{padding:0 20px}
  .header-inner{height:60px}
  .logo{font-size:17px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --ink:#17141F;
  --brand:#241B3A;
  --deep:#14111C;
  --accent:#C9F24D;
  --accent-ink:#1A1F0A;
  --warn:#FF6A4D;
  --muted:#6E6879;
  --line:#E6E2DA;
  --soft:#F1EEE8;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(23,20,31,.04);
  --shadow-2:0 12px 32px rgba(23,20,31,.08);
  --shadow-3:0 24px 60px rgba(23,20,31,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
  --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,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:17px;line-height:1.85;
  font-variant-numeric:tabular-nums;letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),opacity .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease)}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;color:var(--ink)}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
: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:96px 0}
.section--white{background:var(--surface)}
.section--bg{background:var(--bg)}
.section--deep{background:var(--deep);color:#fff}
.section--deep h2,.section--deep h3{color:#fff}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;background:var(--accent);border-radius:1px;display:inline-block}
.section--deep .eyebrow{color:rgba(255,255,255,.6)}
.h1{font-size:56px;line-height:1.12;letter-spacing:-.02em}
.h2{font-size:36px;line-height:1.2;letter-spacing:-.01em}
.h3{font-size:20px;line-height:1.4}
.lead{font-size:17px;line-height:1.85;color:var(--muted);max-width:640px}
.section--deep .lead{color:rgba(255,255,255,.72)}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head .h2{margin-bottom:16px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,241,.86);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .18s var(--ease);
}
.site-header.is-small{box-shadow:var(--shadow-1)}
.nav-inner{
  display:flex;align-items:center;gap:24px;
  height:68px;
  transition:height .18s var(--ease);
}
.site-header.is-small .nav-inner{height:56px}
.logo{
  display:inline-flex;align-items:center;
  font-family:var(--sans);font-weight:800;font-size:20px;
  letter-spacing:-.02em;color:var(--ink);white-space:nowrap;
}
.logo-dot{width:6px;height:6px;background:var(--accent);border-radius:1px;display:inline-block;margin-left:6px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  display:inline-block;padding:8px 14px;border-radius:var(--r-pill);
  font-size:15px;color:var(--muted);font-weight:500;
}
.nav-links a:hover{color:var(--ink);background:rgba(23,20,31,.05)}
.nav-links a.active{color:var(--ink);font-weight:600;background:rgba(23,20,31,.06)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .18s var(--ease),opacity .18s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--deep);
  transform:translateX(100%);transition:transform .32s var(--ease);
  display:flex;flex-direction:column;padding:24px 20px calc(24px + env(safe-area-inset-bottom));
  overflow-y:auto;
}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}
.drawer-head .logo{color:#fff}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.16);color:#fff;font-size:20px;line-height:1;
  display:grid;place-items:center;
}
.drawer-close:hover{border-color:var(--accent);color:var(--accent)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:32px}
.drawer-nav a{
  font-size:28px;line-height:1.6;color:#fff;padding:8px 0 8px 16px;
  border-left:3px solid transparent;
}
.drawer-nav a.active{border-left-color:var(--accent);color:#fff}
.drawer-nav a:hover{color:var(--accent)}
.drawer-cta{margin-top:auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  background:var(--ink);color:#fff;border:1px solid var(--ink);
  transition:background-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),opacity .18s var(--ease);
  white-space:nowrap;
}
.btn:hover{background:var(--brand);border-color:var(--brand);transform:translateY(-1px)}
.btn:active{transform:scale(.98)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-accent{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn-accent:hover{background:#BEE63F;border-color:#BEE63F;color:var(--accent-ink)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink);background:transparent;transform:translateY(-1px)}
.btn-ghost-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.28)}
.btn-ghost-light:hover{border-color:var(--accent);color:var(--accent);background:transparent;transform:translateY(-1px)}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ---------- badges / pills ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:6px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--muted);background:var(--surface);
}
.badge--accent{border-color:rgba(201,242,77,.85);background:rgba(201,242,77,.18);color:var(--accent-ink);font-weight:600}
.pill-group{display:flex;flex-wrap:wrap;gap:10px}
.pill{
  display:inline-flex;align-items:center;
  padding:9px 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.86);
  font-size:14px;font-weight:500;
}
.pill:hover{border-color:var(--accent);color:var(--accent)}
.pill--light{border-color:var(--line);color:var(--muted)}
.pill--light:hover{border-color:var(--ink);color:var(--ink)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;background:var(--deep);color:#fff;overflow:hidden;
  padding:72px 0 88px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.42;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(20,17,28,.96) 0%,rgba(20,17,28,.82) 45%,rgba(36,27,58,.62) 100%);
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.58);margin-bottom:28px;
}
.breadcrumb a{color:rgba(255,255,255,.72)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span.sep{color:rgba(255,255,255,.32)}
.breadcrumb .current{color:rgba(255,255,255,.92)}
.page-hero .h1{max-width:16ch;margin-bottom:20px}
.page-hero .lead{max-width:620px;margin-bottom:32px}

/* ---------- stats ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;border-top:1px solid rgba(255,255,255,.12);padding-top:40px;
}
.stat-num{
  font-family:var(--sans);font-weight:700;font-size:40px;line-height:1.1;
  color:var(--accent);letter-spacing:-.02em;
}
.stat-label{font-size:13px;color:rgba(255,255,255,.62);margin-top:6px}

/* ---------- zigzag ---------- */
.zigzag{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
}
.zigzag + .zigzag{
  margin-top:80px;padding-top:80px;border-top:1px solid var(--line);
}
.zigzag.rev .zz-figure{order:2}
.zz-figure{position:relative;margin:0}
.zz-figure img{
  width:100%;aspect-ratio:4/3;border-radius:var(--r-md);
  border:1px solid var(--line);background:var(--brand);
}
.zz-figure figcaption{font-size:13px;color:var(--muted);margin-top:12px}
.zz-index{
  position:absolute;top:16px;left:16px;
  width:44px;height:44px;border-radius:var(--r-sm);
  background:var(--deep);color:var(--accent);
  display:grid;place-items:center;font-size:14px;font-weight:700;
  border:1px solid rgba(255,255,255,.12);
}
.zz-text .badge{margin-bottom:16px}
.zz-text .h2{margin-bottom:16px}
.zz-text p{color:var(--muted);font-size:17px}
.check-list{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.check-list li{position:relative;padding-left:22px;font-size:16px;color:var(--ink)}
.check-list li::before{
  content:"";position:absolute;left:0;top:.68em;
  width:8px;height:8px;background:var(--accent);border-radius:2px;
}
.check-list li span{color:var(--muted)}

/* ---------- table ---------- */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--surface);-webkit-overflow-scrolling:touch;
}
table.compare{width:100%;min-width:760px;border-collapse:collapse;font-size:15px}
table.compare th,table.compare td{padding:18px 22px;text-align:left;vertical-align:top}
table.compare thead th{
  background:var(--soft);font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);white-space:nowrap;
}
table.compare tbody tr + tr td{border-top:1px solid var(--line)}
table.compare tbody th{font-weight:600;color:var(--ink);background:#FBF9F6}
table.compare td{color:var(--muted)}

/* ---------- timeline ---------- */
.timeline{position:relative;max-width:840px;margin:0 auto}
.timeline::before{content:"";position:absolute;left:23px;top:12px;bottom:12px;width:1px;background:var(--line)}
.tl-item{position:relative;padding:0 0 40px 76px}
.tl-item:last-child{padding-bottom:0}
.tl-num{
  position:absolute;left:0;top:0;width:48px;height:48px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);
  display:grid;place-items:center;font-weight:700;font-size:15px;color:var(--ink);
}
.tl-item h3{margin-bottom:8px}
.tl-item p{color:var(--muted);font-size:16px;margin:0}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 0;font-size:18px;font-weight:600;color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";font-family:var(--sans);font-size:24px;font-weight:400;color:var(--muted);
  transition:transform .18s var(--ease),color .18s var(--ease);flex:0 0 auto;
}
.faq details[open] summary::after{transform:rotate(45deg);color:var(--ink)}
.faq .answer{padding:0 0 26px;font-size:15px;line-height:1.8;color:var(--muted);max-width:760px}

/* ---------- cta ---------- */
.cta-band{
  background:var(--deep);color:#fff;padding:88px 0;
  border-top:1px solid rgba(255,255,255,.08);
}
.cta-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center}
.cta-grid .h2{margin-bottom:16px}
.cta-grid p{color:rgba(255,255,255,.7);margin:0}
.cta-grid .btn-row{justify-content:flex-end}

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

/* ---------- footer ---------- */
.site-footer{
  background:var(--deep);color:#fff;padding:72px 0 32px;
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{color:#fff;font-size:20px;margin-bottom:16px}
.footer-brand .slogan{
  font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);margin:0 0 20px;max-width:340px;
}
.footer-col h4{
  font-family:var(--sans);font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;
}
.footer-col a,.footer-col p{
  display:block;font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);margin:0;
}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .h1{font-size:48px}
  .stats{grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .nav-inner{height:64px}
  .section{padding:72px 0}
  .h1{font-size:38px}
  .h2{font-size:28px}
  .zigzag{grid-template-columns:1fr;gap:32px}
  .zigzag.rev .zz-figure{order:0}
  .zigzag + .zigzag{margin-top:56px;padding-top:56px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px}
  .cta-grid{grid-template-columns:1fr;gap:28px}
  .cta-grid .btn-row{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .page-hero{padding:56px 0 64px}
  .h1{font-size:34px}
  .h2{font-size:26px}
  .h3{font-size:18px}
  .stat-num{font-size:32px}
  .faq summary{font-size:17px;padding:20px 0}
  .section{padding:64px 0}
}
@media (max-width:519px){
  .container{padding:0 20px}
  .nav-actions .btn{display:none}
  .btn{width:100%}
  .btn-row{flex-direction:column;align-items:stretch}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .tl-item{padding-left:64px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}