/* roulang page: index */
:root{
  --ink:#14342B;
  --ink-deep:#0F2620;
  --ink-mid:#1F4A3D;
  --ink-soft:#2E6353;
  --ink-tint:rgba(20,52,43,.06);
  --clay:#C0592F;
  --clay-dark:#9E4522;
  --clay-tint:rgba(192,89,47,.10);
  --sand:#F6F3EC;
  --paper:#FFFFFF;
  --sand-input:#FBF9F4;
  --t1:#15201C;
  --t2:#55635D;
  --t3:#8A968F;
  --line:#E3DED3;
  --divider:#EDE9E0;
  --ok:#2F6B4F;
  --warn:#B4552C;
  --light-text:#F3EFE6;
  --r-card:18px;
  --r-img:20px;
  --r-input:12px;
  --shadow-1:0 1px 2px rgba(20,52,43,.05),0 12px 32px -14px rgba(20,52,43,.14);
  --shadow-2:0 2px 4px rgba(20,52,43,.06),0 20px 44px -18px rgba(20,52,43,.2);
  --sidebar-w:248px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-primary:#14342B;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --bs-body-bg:#F6F3EC;
  --bs-body-color:#15201C;
  --bs-border-color:#E3DED3;
  --bs-border-radius:12px;
  --bs-link-color:#1F4A3D;
  --bs-link-hover-color:#C0592F;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--sand);
  color:var(--t1);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--ink-soft);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--clay)}
h1,h2,h3,h4{margin:0;color:var(--t1);letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:6px}
::selection{background:rgba(192,89,47,.18)}

/* ---------- 布局骨架：左侧 App Shell ---------- */
.shell{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}

/* ---------- 侧边导航 ---------- */
.side{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--paper);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:26px 18px 20px;z-index:1045;
  overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:10px;padding:0 6px 22px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:var(--ink);color:var(--light-text);
  display:flex;align-items:center;justify-content:center;font-size:15px;
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.nav-gtitle{
  font-size:12px;letter-spacing:.12em;color:var(--t3);
  padding:16px 10px 8px;text-transform:uppercase;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:10px;
  font-size:14px;font-weight:500;color:var(--t2);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-item i{width:18px;text-align:center;font-size:15px;color:var(--t3);transition:color .18s var(--ease)}
.nav-item:hover{background:var(--ink-tint);color:var(--ink)}
.nav-item:hover i{color:var(--ink-soft)}
.nav-item.active{background:var(--ink-tint);color:var(--ink);font-weight:600}
.nav-item.active i{color:var(--ink)}
.nav-item.active::before{
  content:"";position:absolute;left:-18px;top:9px;bottom:9px;width:3px;
  background:var(--clay);border-radius:0 3px 3px 0;
}
.side-card{
  margin-top:auto;border:1px solid var(--line);border-radius:14px;
  padding:16px;background:var(--sand);
}
.side-card p{font-size:13px;color:var(--t2);line-height:1.7}
.btn-ghost-sm{
  display:block;text-align:center;margin-top:12px;height:36px;line-height:34px;
  border:1px solid var(--ink);border-radius:999px;font-size:13px;color:var(--ink);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.btn-ghost-sm:hover{background:var(--ink);color:var(--light-text)}
.qr-slot{
  margin-top:12px;width:64px;height:64px;border-radius:10px;
  border:1px dashed var(--line);background:var(--paper);
  display:flex;align-items:center;justify-content:center;
  font-size:11px;color:var(--t3);text-align:center;line-height:1.3;
}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:1046;
  align-items:center;gap:12px;padding:0 18px;
  background:rgba(246,243,236,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.topbar.scrolled{background:rgba(246,243,236,.98)}
.burger{
  width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  background:var(--paper);color:var(--ink);font-size:16px;
}
.topbar .brand{padding:0}
.topbar .brand-mark{width:30px;height:30px;flex:0 0 30px}
.topbar .brand-text{font-size:16px}
.scrim{
  position:fixed;inset:0;background:rgba(15,38,32,.45);z-index:1044;
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);
}
.scrim.show{opacity:1;pointer-events:auto}

/* ---------- 通用区块 ---------- */
.section{padding:104px 0}
.section--tight{padding:80px 0}
.section--paper{background:var(--paper)}
.section--sand{background:var(--sand)}
.eyebrow{
  font-size:12px;letter-spacing:.12em;color:var(--clay);
  font-weight:600;margin-bottom:14px;text-transform:uppercase;
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}
.sec-head h2{font-size:clamp(24px,2.6vw,36px);font-weight:600;line-height:1.25}
.sec-sub{margin-top:12px;font-size:15px;color:var(--t2);max-width:640px}
.h2-line{display:block;width:38px;height:3px;background:var(--clay);border-radius:2px;margin-bottom:20px}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;border:1px solid var(--ink);
  background:var(--ink);color:var(--light-text);font-size:15px;font-weight:500;
  transition:background .15s var(--ease),transform .15s var(--ease),box-shadow .15s var(--ease);
}
.btn-main:hover{background:var(--ink-mid);color:var(--light-text);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-main:active{transform:translateY(0);box-shadow:none}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  border:1px solid var(--ink);background:transparent;color:var(--ink);
  font-size:15px;font-weight:500;
  transition:background .15s var(--ease),transform .15s var(--ease);
}
.btn-outline:hover{background:var(--ink-tint);color:var(--ink);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.textlink{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:500;color:var(--ink);
  background-image:linear-gradient(currentColor,currentColor);
  background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;
  padding-bottom:2px;transition:background-size .22s var(--ease),color .18s var(--ease);
}
.textlink:hover{color:var(--clay);background-size:100% 1px}
.textlink i{font-size:12px;transition:transform .22s var(--ease)}
.textlink:hover i{transform:translateX(3px)}

/* ---------- Hero ---------- */
.hero{background:var(--paper);padding:84px 0 92px;border-bottom:1px solid var(--divider)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.hero h1{
  font-family:"Songti SC","Noto Serif SC",Georgia,serif;
  font-size:clamp(30px,4vw,52px);font-weight:700;line-height:1.15;letter-spacing:-.02em;
}
.hero h1 em{
  font-style:normal;color:var(--ink);
  box-shadow:inset 0 -10px 0 rgba(192,89,47,.16);
}
.hero-sub{margin-top:18px;font-size:17px;color:var(--t2);max-width:460px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-trust{display:flex;flex-wrap:wrap;gap:24px;margin-top:34px}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t2)}
.hero-trust i{color:var(--clay);font-size:14px}
.hero-media{
  position:relative;margin:0;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:4/3;background:#EAE5DA;
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(246,243,236,.10) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(246,243,236,.10) 1px,transparent 1px);
  background-size:36px 36px;
}
.hero-media::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--clay);z-index:2;
}

/* ---------- 痛点提问区 ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pain{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.pain:hover{border-color:rgba(20,52,43,.3);transform:translateY(-2px)}
.pain-no{
  font-family:"Songti SC","Noto Serif SC",Georgia,serif;
  font-size:30px;font-weight:700;color:var(--clay);line-height:1;
  font-variant-numeric:tabular-nums;
}
.pain h3{font-size:17px;font-weight:600;margin-top:16px;line-height:1.5}
.pain p{margin-top:10px;font-size:13px;color:var(--t2);line-height:1.75}
.pain .arrow{margin-top:16px;display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--t3)}
.pain:hover .arrow i{transform:translateX(3px);color:var(--clay)}
.pain .arrow i{transition:transform .2s var(--ease),color .2s var(--ease);font-size:12px}

/* ---------- 方案卡片区 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.plan{
  position:relative;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.plan:hover{border-color:rgba(20,52,43,.3);transform:translateY(-2px)}
.plan--wide{grid-column:span 2;display:grid;grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr)}
.plan--bar{grid-column:span 3;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:32px;padding:32px 36px}
.plan-media{position:relative;overflow:hidden;background:#EAE5DA;min-height:220px}
.plan-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.plan-body{padding:28px 26px 30px}
.plan--bar .plan-body{padding:0}
.plan-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.plan-no{font-family:"Songti SC","Noto Serif SC",Georgia,serif;font-size:15px;font-weight:700;color:var(--clay);letter-spacing:.06em}
.badge-cat{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:var(--ink-tint);color:var(--ink);
  font-size:12px;letter-spacing:.06em;font-weight:500;
}
.badge-clay{background:var(--clay-tint);color:var(--clay-dark)}
.badge-file{
  display:inline-block;padding:3px 10px;border-radius:6px;border:1px solid var(--line);
  font-size:11px;letter-spacing:.08em;color:var(--t2);font-variant-numeric:tabular-nums;
}
.plan h3{font-size:21px;font-weight:600;line-height:1.4}
.plan-desc{margin-top:12px;font-size:14px;color:var(--t2);line-height:1.8}
.plan-list{margin-top:18px;display:grid;gap:10px}
.plan-list li{position:relative;padding-left:18px;font-size:14px;color:var(--t2);line-height:1.75}
.plan-list li::before{
  content:"";position:absolute;left:0;top:10px;width:5px;height:5px;
  background:var(--clay);border-radius:1px;
}
.plan-link{margin-top:22px;display:inline-flex}

/* ---------- 数据区 ---------- */
.stats{background:var(--ink-deep);color:var(--light-text);padding:92px 0}
.stats h2{color:var(--light-text)}
.stats .sec-sub{color:rgba(243,239,230,.72)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:8px}
.stat{border-top:1px solid rgba(243,239,230,.22);padding-top:24px}
.stat-num{
  font-family:"Songti SC","Noto Serif SC",Georgia,serif;
  font-size:clamp(44px,5vw,68px);font-weight:700;line-height:1;
  font-variant-numeric:tabular-nums;color:var(--light-text);letter-spacing:-.02em;
}
.stat-unit{font-size:20px;margin-left:4px;color:var(--clay)}
.stat-label{margin-top:14px;font-size:13px;letter-spacing:.06em;color:rgba(243,239,230,.9)}
.stat-note{margin-top:8px;font-size:12px;line-height:1.7;color:rgba(243,239,230,.6)}
.quote-bar{
  margin-top:56px;padding-top:28px;border-top:1px solid rgba(243,239,230,.18);
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
}
.quote-bar p{font-size:15px;color:rgba(243,239,230,.86);max-width:620px;line-height:1.8}
.logo-wall{display:flex;flex-wrap:wrap;gap:12px}
.logo-wall span{
  display:inline-block;padding:9px 16px;border:1px solid rgba(243,239,230,.24);
  border-radius:999px;font-size:12px;letter-spacing:.06em;color:rgba(243,239,230,.7);
}

/* ---------- CMS 最新信息 ---------- */
.cms-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cms-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.cms-card:hover{border-color:rgba(20,52,43,.3);transform:translateY(-2px)}
.cms-card--lead{grid-column:span 2;flex-direction:row}
.cms-thumb{display:block;position:relative;overflow:hidden;background:#EAE5DA;aspect-ratio:16/9}
.cms-card--lead .cms-thumb{flex:0 0 44%;aspect-ratio:auto;min-height:260px}
.cms-thumb img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:transform .4s var(--ease)}
.cms-card:hover .cms-thumb img{transform:scale(1.03)}
.cms-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.cms-title{font-size:18px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-card--lead .cms-title{font-size:22px}
.cms-title a{color:var(--t1)}
.cms-title a:hover{color:var(--ink);box-shadow:inset 0 -6px 0 rgba(192,89,47,.14)}
.cms-excerpt{
  font-size:14px;color:var(--t2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums;
}
.cms-empty{
  grid-column:span 3;border:1px dashed var(--line);border-radius:var(--r-card);
  background:var(--paper);padding:56px 24px;text-align:center;
}
.cms-empty i{font-size:26px;color:var(--t3)}
.cms-empty p{margin:14px 0 20px;font-size:15px;color:var(--t2)}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:minmax(0,.75fr) minmax(0,1.25fr);gap:56px;align-items:start}
.faq-grid .sec-sub{max-width:none}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-width:0;--bs-accordion-border-radius:0;--bs-accordion-inner-border-radius:0}
.accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.accordion-item:last-child{border-bottom:1px solid var(--line)}
.accordion-header{margin:0}
.accordion-button{
  background:transparent;border:0;box-shadow:none;padding:22px 4px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:17px;font-weight:600;color:var(--t1);border-radius:0;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.accordion-button:not(.collapsed){color:var(--ink);background:rgba(246,243,236,.7)}
.accordion-button:hover{background:rgba(246,243,236,.7)}
.accordion-button:focus,.accordion-button:focus-visible{box-shadow:none;outline:2px solid var(--clay);outline-offset:-2px}
.accordion-button::after{display:none!important}
.acc-plus{position:relative;width:16px;height:16px;flex:0 0 16px}
.acc-plus::before,.acc-plus::after{content:"";position:absolute;background:var(--ink);transition:transform .22s var(--ease),opacity .22s var(--ease),background .22s var(--ease)}
.acc-plus::before{left:0;top:7.25px;width:16px;height:1.5px}
.acc-plus::after{left:7.25px;top:0;width:1.5px;height:16px}
.accordion-button:not(.collapsed) .acc-plus::after{transform:rotate(90deg);opacity:0}
.accordion-button:not(.collapsed) .acc-plus::before{background:var(--clay)}
.accordion-body{padding:0 4px 24px;font-size:15px;color:var(--t2);line-height:1.85}

/* ---------- 表单 ---------- */
.lead-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;align-items:start}
.form-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);padding:36px;box-shadow:var(--shadow-1)}
.field{margin-bottom:20px}
.field label{display:block;font-size:13px;color:var(--t2);margin-bottom:8px}
.field .req{color:var(--clay)}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-input);
  background:var(--sand-input);color:var(--t1);font-size:15px;font-family:inherit;
  padding:0 14px;height:48px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:auto;padding:12px 14px;line-height:1.7;resize:vertical;min-height:104px}
.field input::placeholder,.field textarea::placeholder{color:var(--t3)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(20,52,43,.12);
}
.field.is-error input,.field.is-error textarea{border-color:var(--warn);box-shadow:0 0 0 3px rgba(180,85,44,.1)}
.field .err{display:none;margin-top:8px;font-size:13px;color:var(--warn)}
.field.is-error .err{display:block}
.check{display:flex;gap:10px;align-items:flex-start;margin:6px 0 24px}
.check input{
  appearance:none;-webkit-appearance:none;width:16px;height:16px;flex:0 0 16px;margin-top:3px;
  border:1px solid var(--t3);border-radius:4px;background:var(--paper);cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease);position:relative;
}
.check input:checked{background:var(--ink);border-color:var(--ink)}
.check input:checked::after{
  content:"";position:absolute;left:4.5px;top:1.5px;width:5px;height:9px;
  border-right:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(45deg);
}
.check label{font-size:13px;color:var(--t2);line-height:1.7;margin:0}
.check a{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.form-note{
  background:var(--sand);border:1px solid var(--line);border-radius:14px;
  padding:18px 20px;font-size:13px;color:var(--t2);line-height:1.8;
}
.form-msg{display:none;border-radius:12px;padding:14px 16px;font-size:14px;margin-top:18px}
.form-msg.show{display:block}
.form-msg.success{background:rgba(47,107,79,.1);color:var(--ok);border:1px solid rgba(47,107,79,.25)}
.form-msg.error{background:rgba(180,85,44,.1);color:var(--warn);border:1px solid rgba(180,85,44,.25)}
.lead-aside h3{font-size:19px;font-weight:600}
.lead-list{margin-top:22px;display:grid;gap:16px}
.lead-list li{display:flex;gap:12px;font-size:14px;color:var(--t2);line-height:1.8}
.lead-list i{color:var(--clay);font-size:14px;margin-top:5px}
.contact-line{margin-top:26px;padding-top:22px;border-top:1px solid var(--line);font-size:14px;color:var(--t2)}

/* ---------- 页尾 CTA 条 ---------- */
.cta-bar{background:var(--ink);color:var(--light-text);padding:64px 0}
.cta-bar h2{color:var(--light-text);font-size:clamp(22px,2.4vw,30px);font-weight:600}
.cta-bar p{margin-top:12px;color:rgba(243,239,230,.78);font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-actions .btn-main{background:var(--clay);border-color:var(--clay)}
.cta-actions .btn-main:hover{background:var(--clay-dark);border-color:var(--clay-dark)}
.cta-actions .btn-light-outline{
  display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;
  border:1px solid rgba(243,239,230,.5);border-radius:999px;color:var(--light-text);
  font-size:15px;transition:background .18s var(--ease);
}
.cta-actions .btn-light-outline:hover{background:rgba(243,239,230,.12);color:var(--light-text)}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--ink-deep);color:#D9D3C6;padding:72px 0 0;border-top:1px solid var(--clay)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}
.foot-brand .brand-text{color:var(--light-text)}
.foot-brand .brand-mark{background:rgba(243,239,230,.12)}
.foot-desc{margin-top:18px;font-size:13px;line-height:1.9;color:rgba(217,211,198,.8);max-width:320px}
.foot-contact{margin-top:18px;font-size:13px;line-height:2;color:rgba(217,211,198,.8)}
.foot-contact strong{color:var(--light-text);font-weight:600}
.foot-qr{
  margin-top:18px;width:76px;height:76px;border-radius:10px;
  border:1px dashed rgba(217,211,198,.35);display:flex;align-items:center;justify-content:center;
  font-size:11px;color:rgba(217,211,198,.6);text-align:center;line-height:1.3;
}
.foot-col h4{font-size:13px;letter-spacing:.12em;color:rgba(217,211,198,.55);font-weight:600;margin-bottom:18px}
.foot-col ul{display:grid;gap:11px}
.foot-col a{font-size:14px;color:#D9D3C6}
.foot-col a:hover{color:var(--clay);text-decoration:underline;text-underline-offset:3px}
.foot-bottom{
  margin-top:56px;border-top:1px solid rgba(217,211,198,.16);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;font-size:13px;color:rgba(217,211,198,.66);
}
.foot-bottom a{color:rgba(217,211,198,.66)}
.foot-bottom a:hover{color:var(--clay)}

/* ---------- 弹层 ---------- */
.modal-scrim{
  position:fixed;inset:0;background:rgba(15,38,32,.5);z-index:1060;
  opacity:0;pointer-events:none;transition:opacity .2s var(--ease);
  display:flex;align-items:center;justify-content:center;padding:24px;
}
.modal-scrim.show{opacity:1;pointer-events:auto}
.modal-card{
  width:100%;max-width:520px;background:var(--paper);border-radius:24px;
  padding:34px;box-shadow:var(--shadow-2);
  transform:scale(.98);opacity:0;transition:transform .2s var(--ease),opacity .2s var(--ease);
  max-height:88vh;overflow-y:auto;
}
.modal-scrim.show .modal-card{transform:scale(1);opacity:1}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:6px}
.modal-head h2{font-size:21px;font-weight:600}
.modal-close{
  width:36px;height:36px;flex:0 0 36px;border:1px solid var(--line);border-radius:10px;
  background:transparent;color:var(--t2);font-size:15px;
}
.modal-close:hover{background:var(--sand);color:var(--ink)}
.modal-desc{font-size:14px;color:var(--t2);margin-bottom:22px;line-height:1.8}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms!important;animation-duration:.01ms!important}
}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .wrap{padding:0 28px}
}
@media (max-width:1199px){
  :root{--sidebar-w:76px}
  .side{padding:22px 10px 18px;align-items:center}
  .brand{padding:0 0 22px;justify-content:center}
  .brand-text{display:none}
  .nav-gtitle{font-size:10px;letter-spacing:.04em;padding:14px 0 8px;text-align:center;width:100%}
  .nav-item{justify-content:center;padding:0;width:100%}
  .nav-item .nav-label{display:none}
  .nav-item.active::before{left:-10px}
  .side-card{display:none}
  .nav-item::after{
    content:attr(data-tip);position:absolute;left:56px;top:50%;transform:translateY(-50%);
    background:var(--ink);color:var(--light-text);font-size:12px;padding:6px 10px;
    border-radius:8px;white-space:nowrap;opacity:0;pointer-events:none;
    transition:opacity .16s var(--ease);z-index:5;
  }
  .nav-item:hover::after{opacity:1}
  .hero-grid{gap:40px}
  .plan-grid{grid-template-columns:repeat(2,1fr)}
  .plan--wide{grid-column:span 2}
  .plan--bar{grid-column:span 2}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .cms-grid{grid-template-columns:repeat(2,1fr)}
  .cms-card--lead{grid-column:span 2}
  .cms-empty{grid-column:span 2}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .lead-grid{grid-template-columns:1fr;gap:40px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:991px){
  .topbar{display:flex}
  .side{
    width:280px;padding:26px 18px 20px;align-items:stretch;
    transform:translateX(-100%);transition:transform .28s var(--ease);
    box-shadow:var(--shadow-2);
  }
  .side.open{transform:none}
  .side .brand{justify-content:flex-start;padding-left:6px}
  .side .brand-text{display:inline}
  .side .nav-gtitle{text-align:left;padding-left:10px;font-size:12px}
  .side .nav-item{justify-content:flex-start;padding:0 12px;width:auto}
  .side .nav-item .nav-label{display:inline}
  .side .nav-item::after{display:none}
  .side .nav-item.active::before{left:-18px}
  .side-card{display:block}
  .shell{margin-left:0;padding-top:60px}
  .hero{padding:56px 0 64px}
  .section{padding:72px 0}
  .plan-grid{grid-template-columns:1fr}
  .plan--wide,.plan--bar{grid-column:span 1;grid-template-columns:1fr}
  .plan-media{aspect-ratio:16/9;min-height:0}
  .plan--bar{padding:26px 24px}
  .plan--bar .plan-body{padding:0}
  .pain-grid{grid-template-columns:repeat(2,1fr)}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{aspect-ratio:5/4}
  .cms-card--lead{flex-direction:column}
  .cms-card--lead .cms-thumb{flex:none;aspect-ratio:16/9;min-height:0}
  .cta-bar{padding:56px 0}
}
@media (max-width:767px){
  body{font-size:15px}
  .wrap{padding:0 20px}
  .section{padding:60px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .hero{padding:44px 0 56px}
  .hero-sub{font-size:16px}
  .hero-trust{gap:14px 20px;margin-top:26px}
  .pain-grid{grid-template-columns:1fr}
  .stats{padding:64px 0}
  .stats-grid{grid-template-columns:1fr;gap:0}
  .stat{padding:22px 0 4px;margin-bottom:22px}
  .quote-bar{margin-top:36px}
  .cms-grid{grid-template-columns:1fr}
  .cms-card--lead{grid-column:span 1}
  .cms-empty{grid-column:span 1;padding:40px 20px}
  .form-card{padding:24px}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .cta-actions{width:100%}
  .cta-actions .btn-main,.cta-actions .btn-light-outline{width:100%}
  .modal-scrim{padding:0;align-items:flex-end}
  .modal-card{max-width:none;border-radius:24px 24px 0 0;padding:26px 20px 30px}
}
@media (max-width:520px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-main,.hero-actions .btn-outline{width:100%}
  .accordion-button{font-size:16px;padding:18px 2px}
  .plan h3{font-size:19px}
}

/* roulang page: article */
:root{
  --ink:#14342B;
  --ink-deep:#0F2620;
  --ink-mid:#1F4A3D;
  --ink-soft:#2E6353;
  --clay:#C0592F;
  --clay-deep:#9E4522;
  --sand:#F6F3EC;
  --sand-2:#FBF9F4;
  --paper:#FFFFFF;
  --text:#15201C;
  --text-2:#55635D;
  --text-3:#8A968F;
  --line:#E3DED3;
  --line-2:#EDE9E0;
  --ok:#2F6B4F;
  --warn:#B4552C;
  --r-card:20px;
  --r-input:12px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(20,52,43,.05),0 12px 32px -14px rgba(20,52,43,.14);
  --shadow-2:0 2px 4px rgba(20,52,43,.06),0 20px 44px -18px rgba(20,52,43,.2);
  --ease:cubic-bezier(.22,.61,.36,1);
  --side:248px;
  --bs-primary:#14342B;
  --bs-primary-rgb:20,52,43;
  --bs-body-bg:#F6F3EC;
  --bs-body-color:#15201C;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --bs-border-color:#E3DED3;
  --bs-link-color:#1F4A3D;
  --bs-link-hover-color:#C0592F;
  --bs-border-radius:12px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--ink-mid);text-decoration:none;transition:color .16s var(--ease)}
a:hover{color:var(--clay)}
h1,h2,h3,h4,h5{margin:0;color:var(--text);font-weight:600;letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums}

/* ============ 布局骨架 ============ */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--side);
  background:var(--paper);border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:8px;
  padding:22px 16px 20px;z-index:1040;
  transition:transform .3s var(--ease),width .25s var(--ease);
}
.side-head{display:flex;align-items:center;justify-content:space-between;gap:8px}
.brand{display:flex;align-items:center;gap:10px;padding:6px 4px;flex:1;min-width:0}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:11px;
  background:var(--ink);color:#F3EFE6;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em;white-space:nowrap}
.side-close{
  display:none;width:34px;height:34px;border:1px solid var(--line);background:transparent;
  border-radius:10px;color:var(--text-2);font-size:15px;
}
.side-nav{flex:1;overflow-y:auto;margin-top:14px;padding-right:2px;scrollbar-width:thin}
.nav-group{
  font-size:12px;letter-spacing:.12em;color:var(--text-3);margin:18px 0 8px;padding-left:10px;text-transform:uppercase;
}
.nav-group:first-child{margin-top:0}
.nav-link{
  display:flex;align-items:center;gap:12px;height:44px;padding:0 10px;border-radius:10px;
  font-size:14px;font-weight:500;color:var(--text-2);position:relative;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-link i{width:18px;text-align:center;font-size:14px;color:var(--ink-soft)}
.nav-link:hover{background:rgba(20,52,43,.06);color:var(--ink)}
.nav-link.active{background:rgba(20,52,43,.06);color:var(--ink);font-weight:600}
.nav-link.active::before{
  content:"";position:absolute;left:-2px;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--ink);
}
.side-card{
  border:1px solid var(--line);border-radius:16px;padding:16px;background:var(--sand-2);
}
.side-card-t{font-size:14px;font-weight:600;margin-bottom:6px;color:var(--ink)}
.side-card-d{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:12px}
.side-qr{
  margin-top:12px;height:72px;border:1px dashed var(--line);border-radius:12px;
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:var(--text-3);line-height:1.5;
}

.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:1035;
  align-items:center;gap:12px;padding:0 16px;
  background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);
}
.topbar .brand{padding:0;flex:0 1 auto}
.burger{
  width:40px;height:40px;border:1px solid var(--line);border-radius:11px;background:var(--paper);
  color:var(--ink);font-size:16px;display:inline-flex;align-items:center;justify-content:center;
}
.burger:hover{border-color:var(--ink-soft)}

.app-main{margin-left:var(--side);padding-bottom:0}
.wrap{width:100%;max-width:1080px;margin:0 auto;padding:0 32px}
@media (min-width:1440px){ .wrap{max-width:1140px} }

.scrim{
  position:fixed;inset:0;background:rgba(15,38,32,.45);z-index:1038;
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.scrim.show{opacity:1;visibility:visible}

/* ============ 按钮 / 徽章 / 链接 ============ */
.btn-pill{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);border:1px solid transparent;
  background:var(--ink);color:#F3EFE6;font-size:15px;font-weight:600;line-height:1;
  transition:background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-pill:hover{background:var(--ink-mid);color:#F3EFE6;transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-pill:active{transform:translateY(0);box-shadow:none}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  border:1px solid var(--ink);background:transparent;color:var(--ink);
  font-size:15px;font-weight:600;line-height:1;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.btn-ghost:hover{background:rgba(20,52,43,.06);color:var(--ink);transform:translateY(-1px)}
.btn-ghost.on-dark{border-color:rgba(243,239,230,.5);color:#F3EFE6}
.btn-ghost.on-dark:hover{background:rgba(243,239,230,.1);color:#F3EFE6}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease);
}
.text-link i{transition:transform .18s var(--ease)}
.text-link:hover{color:var(--clay);border-bottom-color:var(--clay)}
.text-link:hover i{transform:translateX(3px)}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.1em;font-weight:600;
  background:rgba(20,52,43,.08);color:var(--ink);
}
.badge-clay{background:rgba(192,89,47,.12);color:var(--clay-deep)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;font-weight:600;color:var(--clay);
}

/* ============ 文章页头 ============ */
.post-head{background:var(--sand-2);border-bottom:1px solid var(--line);padding:36px 0 34px}
.crumb{font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:22px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--clay)}
.crumb .sep{color:var(--line);font-weight:600}
.crumb .now{color:var(--ink);font-weight:600;max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.post-title{
  font-size:clamp(28px,3.4vw,44px);line-height:1.22;letter-spacing:-.02em;font-weight:700;
  font-family:"Songti SC","Noto Serif SC","PingFang SC",serif;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  max-width:860px;margin-bottom:18px;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--text-2);font-variant-numeric:tabular-nums;
}
.post-meta .dot{color:var(--line)}
.post-lead{max-width:720px;margin-top:16px;font-size:16px;color:var(--text-2);line-height:1.85}

/* ============ 主体布局 ============ */
.main-grid{padding:56px 0 88px}
.panel{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--shadow-1);
}
.article-body{max-width:740px;font-size:16.5px;line-height:1.9;color:var(--text)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:clamp(21px,2.2vw,26px);line-height:1.35;margin:48px 0 16px;position:relative;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.34em;width:3px;height:18px;border-radius:2px;background:var(--clay);
}
.article-body h3{font-size:19px;line-height:1.4;margin:32px 0 12px}
.article-body h4{font-size:17px;margin:24px 0 10px}
.article-body a{color:var(--ink-mid);border-bottom:1px solid rgba(192,89,47,.4)}
.article-body a:hover{color:var(--clay-deep);border-bottom-color:var(--clay-deep)}
.article-body img{border-radius:20px;margin:24px 0 8px}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;line-height:1.7}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;border-left:3px solid var(--ink);
  background:rgba(20,52,43,.05);border-radius:0 14px 14px 0;color:var(--ink-mid);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul,.article-body ol{margin:16px 0 22px;padding-left:4px}
.article-body li{margin:8px 0;padding-left:20px;position:relative}
.article-body ul > li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:1px;background:var(--clay);
}
.article-body ol{counter-reset:odnum}
.article-body ol > li::before{
  counter-increment:odnum;content:counter(odnum);position:absolute;left:0;top:.15em;
  font-size:13px;font-weight:700;color:var(--clay);font-variant-numeric:tabular-nums;
}
.article-body table{
  width:100%;display:block;overflow-x:auto;border-collapse:collapse;margin:22px 0;
  font-size:14.5px;border:1px solid var(--line);border-radius:12px;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap}
.article-body th{background:var(--sand-2);font-weight:600;color:var(--ink)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-body code{background:var(--sand);padding:2px 6px;border-radius:6px;font-size:14px;color:var(--clay-deep)}

/* 空态 */
.empty-box{
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--sand-2);
  padding:56px 28px;text-align:center;
}
.empty-box i{font-size:28px;color:var(--ink-soft);margin-bottom:16px;display:block}
.empty-box h2{font-size:22px;margin-bottom:10px}
.empty-box p{color:var(--text-2);font-size:15px;margin-bottom:22px}

/* ============ 侧栏辅助栏 ============ */
.aside-stack{display:flex;flex-direction:column;gap:20px;position:sticky;top:24px}
.aside-card{
  background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:22px;
}
.aside-card h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.aside-card h3 i{color:var(--clay);font-size:13px}
.toc-list li{border-top:1px solid var(--line-2)}
.toc-list li:first-child{border-top:0}
.toc-list a{display:block;padding:10px 0;font-size:14px;color:var(--text-2)}
.toc-list a:hover{color:var(--ink);padding-left:4px}
.mini-post{display:flex;gap:12px;padding:12px 0;border-top:1px solid var(--line-2)}
.mini-post:first-of-type{border-top:0;padding-top:0}
.mini-thumb{width:76px;height:56px;flex:0 0 76px;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.mini-thumb img{width:100%;height:100%;object-fit:cover}
.mini-title{font-size:14px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-meta{font-size:12px;color:var(--text-3);margin-top:6px;font-variant-numeric:tabular-nums}
.aside-cta{
  background:var(--ink-deep);border-radius:18px;padding:24px;color:#D9D3C6;border:1px solid rgba(243,239,230,.12);
}
.aside-cta h3{color:#F3EFE6;font-size:17px;margin-bottom:8px}
.aside-cta p{font-size:13.5px;line-height:1.75;color:#C9C2B4;margin-bottom:18px}
.aside-cta .btn-ghost{width:100%}

/* ============ 文末 ============ */
.post-foot{margin-top:40px;padding-top:28px;border-top:1px solid var(--line-2)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:24px}
.tag-row .label{font-size:13px;color:var(--text-3);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);font-size:13px;color:var(--text-2);background:var(--sand-2);
}
.tag:hover{border-color:var(--ink-soft);color:var(--ink)}
.share-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.share-row .label{font-size:13px;color:var(--text-3)}
.share-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--paper);
  color:var(--ink-mid);display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.share-btn:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-2px)}
.back-row{margin-top:28px}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:34px}
.post-nav-item{
  border:1px solid var(--line);border-radius:18px;padding:18px 20px;background:var(--paper);
  transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.post-nav-item:hover{border-color:rgba(20,52,43,.3);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.post-nav-item .pn-label{font-size:12px;letter-spacing:.12em;color:var(--clay);font-weight:600}
.post-nav-item .pn-title{display:block;font-size:15px;font-weight:600;margin-top:8px;line-height:1.6;color:var(--text)}
.post-nav-item.next{text-align:right}

/* ============ 相关推荐 ============ */
.section{padding:72px 0}
.section-sand{background:var(--sand)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3}
.section-head p{font-size:14px;color:var(--text-2);margin:8px 0 0}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--paper);border:1px solid var(--line);border-radius:18px;overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(20,52,43,.3);box-shadow:var(--shadow-1)}
.thumb{aspect-ratio:16/9;overflow:hidden;background:var(--sand);position:relative}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .thumb img{transform:scale(1.03)}
.thumb .badge-pill{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.92);color:var(--ink)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{font-size:17px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a:hover{border-bottom:1px solid var(--clay);color:var(--ink)}
.news-desc{font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;padding-top:6px}

/* ============ CTA 条 ============ */
.cta-band{background:var(--ink-deep);color:#F3EFE6;padding:64px 0;border-top:1px solid rgba(243,239,230,.1)}
.cta-band h2{color:#F3EFE6;font-size:clamp(22px,2.6vw,32px);line-height:1.3;margin-bottom:12px}
.cta-band p{color:#C9C2B4;font-size:15px;max-width:640px;margin-bottom:26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-note{margin-top:22px;font-size:13px;color:#A8A294;line-height:1.7}

/* ============ 页脚 ============ */
.site-foot{background:var(--ink-deep);color:#D9D3C6;border-top:1px solid var(--clay)}
.site-foot .wrap{padding-top:56px;padding-bottom:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.foot-brand .brand-text{color:#F3EFE6}
.foot-brand .brand-mark{background:rgba(243,239,230,.12)}
.foot-desc{font-size:13.5px;line-height:1.85;color:#B9B3A5;margin:16px 0 14px;max-width:320px}
.foot-contact{font-size:13.5px;color:#B9B3A5;line-height:1.9;margin-bottom:16px}
.foot-contact strong{color:#F3EFE6;font-weight:600}
.foot-qr{
  width:132px;height:132px;border:1px dashed rgba(243,239,230,.28);border-radius:14px;
  display:flex;align-items:center;justify-content:center;font-size:12px;color:#9A9486;line-height:1.5;text-align:center;
}
.foot-col h4{font-size:13px;letter-spacing:.12em;color:#F3EFE6;font-weight:600;margin-bottom:16px}
.foot-col li{margin-bottom:11px}
.foot-col a{font-size:14px;color:#B9B3A5}
.foot-col a:hover{color:var(--clay);text-decoration:underline}
.foot-bottom{
  border-top:1px solid rgba(243,239,230,.12);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8F8A7C;font-variant-numeric:tabular-nums;
}

/* ============ 动画 ============ */
.fade-up{opacity:0;transform:translateY(12px);animation:fadeUp .5s var(--ease) forwards}
@keyframes fadeUp{to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .fade-up{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (min-width:992px){
  .sidebar{transform:none !important}
  .scrim{display:none}
}
@media (max-width:1199.98px) and (min-width:992px){
  :root{--side:76px}
  .sidebar{padding:20px 12px;align-items:center}
  .brand-text{display:none}
  .side-nav{width:100%}
  .nav-group{font-size:0;border-top:1px solid var(--line-2);height:1px;margin:14px 6px;padding:0;overflow:hidden}
  .nav-link{justify-content:center;padding:0}
  .nav-link span{display:none}
  .nav-link.active::before{left:-6px}
  .side-card{padding:10px;text-align:center}
  .side-card-t,.side-card-d,.side-qr{display:none}
  .side-card .btn-ghost{width:40px;height:40px;padding:0;border-radius:12px}
  .side-card .btn-ghost span{display:none}
}
@media (max-width:991.98px){
  .sidebar{width:280px;transform:translateX(-100%);box-shadow:var(--shadow-2)}
  .sidebar.open{transform:translateX(0)}
  .side-close{display:inline-flex;align-items:center;justify-content:center}
  .topbar{display:flex}
  .app-main{margin-left:0;padding-top:60px}
  .wrap{padding:0 22px}
  .main-grid{padding:40px 0 64px}
  .panel{padding:24px 20px}
  .aside-stack{position:static}
  .section{padding:56px 0}
  .card-grid{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:52px 0}
}
@media (max-width:767.98px){
  .post-head{padding:24px 0 26px}
  .post-title{-webkit-line-clamp:3}
  .card-grid{grid-template-columns:1fr}
  .post-nav{grid-template-columns:1fr}
  .post-nav-item.next{text-align:left}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .article-body{font-size:16px}
  .foot-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .wrap{padding:0 16px}
  .panel{padding:20px 16px;border-radius:16px}
  .article-body h2{margin-top:38px}
  .btn-pill,.btn-ghost{width:100%}
  .cta-actions{flex-direction:column}
  .aside-cta .btn-ghost{width:100%}
}

/* roulang page: category1 */
/* ================= 设计变量 ================= */
:root{
  --green-900:#0F2620;
  --green-800:#14342B;
  --green-700:#1F4A3D;
  --green-600:#2E6353;
  --green-tint:rgba(20,52,43,.06);
  --green-tint-2:rgba(20,52,43,.12);
  --clay:#C0592F;
  --clay-dark:#9E4522;
  --clay-tint:rgba(192,89,47,.10);
  --sand:#F6F3EC;
  --paper:#FFFFFF;
  --field:#FBF9F4;
  --ink:#15201C;
  --ink-2:#55635D;
  --ink-3:#8A968F;
  --line:#E3DED3;
  --line-2:#EDE9E0;
  --ok:#2F6B4F;
  --warn:#B4552C;
  --r-card:20px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,52,43,.05), 0 12px 32px -14px rgba(20,52,43,.14);
  --sh-2:0 2px 6px rgba(20,52,43,.07), 0 22px 46px -18px rgba(20,52,43,.20);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-w:248px;
  --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-serif:"Songti SC","Noto Serif SC","Source Han Serif SC",Georgia,serif;
}

/* Bootstrap 变量重绘 */
:root{
  --bs-primary:#14342B;
  --bs-body-bg:#FFFFFF;
  --bs-body-color:#15201C;
  --bs-border-color:#E3DED3;
  --bs-border-radius:12px;
  --bs-link-color:#1F4A3D;
  --bs-link-hover-color:#C0592F;
  --bs-body-font-family:var(--font-sans);
  --bs-font-sans-serif:var(--font-sans);
}

/* ================= 基础 ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--green-700);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--clay)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--clay);outline-offset:2px;border-radius:6px;
}
::selection{background:var(--clay-tint);color:var(--green-900)}
.tnum{font-variant-numeric:tabular-nums}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:2000;
  background:var(--green-800);color:#F3EFE6;padding:10px 18px;border-radius:0 0 12px 0;
}
.skip-link:focus{left:0;color:#F3EFE6}

/* ================= 布局骨架 ================= */
.app{display:flex;min-height:100vh}
.app-main{
  margin-left:var(--nav-w);
  flex:1 1 auto;
  min-width:0;
  display:flex;
  flex-direction:column;
}
.wrap{
  width:100%;
  max-width:1120px;
  margin:0 auto;
  padding:0 32px;
}

/* ================= 左侧 App Shell ================= */
.sidenav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  background:var(--sand);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  gap:22px;
  padding:26px 18px 24px;
  overflow-y:auto;
  z-index:1045;
  transition:transform .26s var(--ease);
}
.sidenav-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 4px;color:var(--green-800);
}
.brand:hover{color:var(--green-800)}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--green-800);color:#F3EFE6;
  border-radius:10px;font-size:15px;
}
.brand-text{
  font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;
}
.sidenav-close{
  display:none;
  width:36px;height:36px;border-radius:10px;
  border:1px solid var(--line);background:transparent;color:var(--ink-2);
  cursor:pointer;align-items:center;justify-content:center;
}
.sidenav-close:hover{background:var(--green-tint);color:var(--green-800)}

.nav-groups{display:flex;flex-direction:column;gap:8px;flex:1 1 auto}
.nav-group-title{
  font-size:12px;letter-spacing:.12em;color:var(--ink-3);
  margin:14px 8px 6px;text-transform:uppercase;
}
.nav-list{display:flex;flex-direction:column;gap:2px}
.nav-link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;
  border-radius:10px;
  font-size:14px;font-weight:500;color:var(--ink-2);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-link i{width:18px;flex:0 0 18px;text-align:center;font-size:14px;color:var(--ink-3);transition:color .18s var(--ease)}
.nav-link span{white-space:nowrap}
.nav-link:hover{background:var(--green-tint);color:var(--green-800)}
.nav-link:hover i{color:var(--green-700)}
.nav-link.is-active{
  background:var(--green-tint);
  color:var(--green-800);
  font-weight:600;
}
.nav-link.is-active i{color:var(--green-700)}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  background:var(--green-800);border-radius:0 3px 3px 0;
}

.nav-card{
  margin-top:auto;
  border:1px solid var(--line);
  background:var(--paper);
  border-radius:16px;
  padding:16px;
  display:flex;flex-direction:column;gap:12px;
}
.nav-card p{font-size:13px;line-height:1.7;color:var(--ink-2)}
.nav-qr,.foot-qr{
  border:1px dashed var(--line);
  border-radius:12px;
  padding:14px 8px;
  text-align:center;
  font-size:12px;line-height:1.5;color:var(--ink-3);
  background:var(--sand);
}

/* ================= 顶部栏（移动端） ================= */
.topbar{
  display:none;
  position:sticky;top:0;z-index:1030;
  align-items:center;gap:12px;
  height:60px;padding:0 20px;
  background:rgba(246,243,236,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.topbar.is-scrolled{border-bottom-color:var(--line);background:rgba(246,243,236,.98)}
.burger{
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:var(--paper);color:var(--green-800);
  cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
}
.burger:hover{background:var(--green-tint)}
.topbar .brand{padding:0;font-size:16px}
.topbar .brand-mark{width:30px;height:30px;flex:0 0 30px;font-size:13px}

.nav-mask{
  display:none;
  position:fixed;inset:0;z-index:1040;
  background:rgba(15,38,32,.45);
  opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ================= 通用板块 ================= */
.sec{padding:96px 0}
.sec-sand{background:var(--sand)}
.sec-tight{padding-top:64px}
.sec-line{border-top:1px solid var(--line-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;
  color:var(--clay);font-weight:600;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:18px;height:2px;background:var(--clay);border-radius:2px;
}
h1{
  font-family:var(--font-serif);
  font-size:clamp(30px,4vw,52px);
  font-weight:700;line-height:1.15;letter-spacing:-.02em;
  color:var(--ink);
}
h2{
  font-size:clamp(24px,2.6vw,34px);
  font-weight:600;line-height:1.28;letter-spacing:-.01em;
  color:var(--ink);
}
h3{font-size:20px;font-weight:600;line-height:1.4}
h4{font-size:17px;font-weight:600;line-height:1.5}
.lead{font-size:17px;line-height:1.8;color:var(--ink-2)}
.prose p{max-width:760px;color:var(--ink-2);line-height:1.9;margin-bottom:1.2em}
.prose p:last-child{margin-bottom:0}
.sec-head{max-width:760px;margin-bottom:42px}
.sec-head p{margin-top:14px;color:var(--ink-2)}

/* ================= 面包屑 ================= */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-3);
  padding-top:28px;margin-bottom:26px;
}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--green-700)}
.crumb .sep{color:var(--line)}
.crumb .current{color:var(--green-700);font-weight:600}

/* ================= Hero ================= */
.hero{padding-bottom:84px}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:52px;
  align-items:center;
}
.hero h1{margin-bottom:18px}
.hero h1 em{
  font-style:normal;
  box-shadow:inset 0 -8px 0 rgba(192,89,47,.18);
}
.hero-sub{font-size:17px;line-height:1.8;color:var(--ink-2);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-points{
  display:flex;flex-wrap:wrap;gap:22px;margin-top:34px;
  padding-top:24px;border-top:1px solid var(--line-2);
}
.hero-points li{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;color:var(--ink-2);
}
.hero-points i{color:var(--clay);font-size:13px}

.hero-figure{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:5/4;
  background:var(--sand);
  box-shadow:var(--sh-1);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:auto 0 0 0;height:3px;
  background:linear-gradient(90deg,var(--clay) 0 22%,transparent 22% 100%);
}

/* ================= 按钮 ================= */
.btn-pill{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 26px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),
             transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn-pill i{font-size:13px;transition:transform .18s var(--ease)}
.btn-pill:hover i{transform:translateX(3px)}
.btn-primary{
  background:var(--green-800);color:#F3EFE6;
}
.btn-primary:hover{
  background:var(--green-700);color:#fff;
  transform:translateY(-1px);box-shadow:var(--sh-1);
}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{
  background:transparent;border-color:var(--green-800);color:var(--green-800);
}
.btn-outline:hover{background:var(--green-tint);color:var(--green-800)}
.btn-light{
  background:#F3EFE6;color:var(--green-800);
}
.btn-light:hover{background:#fff;color:var(--green-900);transform:translateY(-1px)}
.btn-ghost-light{
  background:transparent;border-color:rgba(243,239,230,.45);color:#F3EFE6;
}
.btn-ghost-light:hover{background:rgba(243,239,230,.12);color:#fff;border-color:rgba(243,239,230,.7)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}

.text-link{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;color:var(--green-800);
}
.text-link i{font-size:12px;transition:transform .18s var(--ease)}
.text-link:hover{color:var(--clay);box-shadow:inset 0 -1px 0 var(--clay)}
.text-link:hover i{transform:translateX(3px)}

/* ================= 双栏图文 ================= */
.split{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:56px;
  align-items:start;
}
.split .prose h2{margin-bottom:20px}
.panel-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.panel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(20,52,43,.3)}
.panel-card figure{aspect-ratio:16/9;overflow:hidden;background:var(--sand)}
.panel-card figure img{width:100%;height:100%;object-fit:cover}
.panel-body{padding:24px}
.panel-body h4{margin-bottom:14px}
.panel-body .note{font-size:13px;color:var(--ink-3);margin-top:16px}

.check-list{display:flex;flex-direction:column;gap:12px}
.check-list li{
  position:relative;padding-left:22px;
  font-size:14px;line-height:1.75;color:var(--ink-2);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:8px;height:8px;border-radius:2px;background:var(--clay);
}

/* ================= 标签 ================= */
.tag{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.04em;font-weight:600;
  background:var(--green-tint);color:var(--green-700);
  white-space:nowrap;
}
.tag-clay{background:var(--clay-tint);color:var(--clay-dark)}
.tag-line{background:transparent;border:1px solid var(--line);color:var(--ink-2)}

/* ================= 术语对照表 ================= */
.table-scroll{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--paper);
  -webkit-overflow-scrolling:touch;
}
.terms{width:100%;min-width:700px;border-collapse:collapse}
.terms th,.terms td{
  padding:18px 22px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--line-2);
}
.terms thead th{
  background:var(--sand);
  font-size:12px;letter-spacing:.12em;color:var(--ink-3);
  font-weight:600;white-space:nowrap;
}
.terms tbody td{font-size:14px;color:var(--ink-2);line-height:1.75}
.terms tbody td:first-child{color:var(--ink);font-weight:600}
.terms tbody td:last-child{color:var(--green-700)}
.terms tbody tr:last-child td{border-bottom:0}
.terms tbody tr:hover{background:rgba(20,52,43,.03)}

/* ================= 编号要点列表 ================= */
.num-list{counter-reset:num;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.num-list li{
  counter-increment:num;position:relative;
  padding:22px 24px 22px 74px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:16px;
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.num-list li:hover{border-color:rgba(20,52,43,.3);transform:translateY(-2px)}
.num-list li::before{
  content:counter(num,decimal-leading-zero);
  position:absolute;left:24px;top:20px;
  font-family:var(--font-serif);
  font-size:24px;font-weight:700;color:var(--clay);
  font-variant-numeric:tabular-nums;
}
.num-list h4{margin-bottom:6px}
.num-list p{font-size:14px;color:var(--ink-2);line-height:1.75}

/* ================= 信号行 ================= */
.signal-list{
  border-top:1px solid var(--line);
}
.signal-row{
  display:grid;
  grid-template-columns:180px minmax(0,1fr) 220px;
  gap:26px;
  align-items:center;
  padding:24px 6px;
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease),padding-left .2s var(--ease);
}
.signal-row:hover{background:rgba(20,52,43,.03);padding-left:14px}
.signal-row .s-name{
  display:inline-flex;align-items:center;gap:10px;
  font-size:16px;font-weight:600;color:var(--ink);
}
.signal-row .s-name::before{
  content:"";width:3px;height:16px;border-radius:2px;background:var(--clay);
}
.signal-row .s-desc{font-size:14px;color:var(--ink-2);line-height:1.75}
.signal-row .s-act{font-size:13px;color:var(--green-700);font-weight:600}

/* ================= 深色数据带 ================= */
.dark-band{
  background:var(--green-900);
  color:#F3EFE6;
  padding:88px 0;
  border-top:1px solid rgba(192,89,47,.6);
  border-bottom:1px solid rgba(192,89,47,.6);
}
.dark-band h2{color:#F3EFE6;max-width:640px}
.dark-band .band-sub{margin-top:14px;color:#D9D3C6;font-size:15px;max-width:640px}
.stat-row{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:32px;margin-top:56px;
}
.stat{border-top:1px solid rgba(243,239,230,.22);padding-top:24px}
.stat .num{
  font-family:var(--font-serif);
  font-size:clamp(44px,5vw,68px);
  font-weight:700;line-height:1;letter-spacing:-.02em;
  color:#F3EFE6;font-variant-numeric:tabular-nums;
}
.stat .num small{font-size:.42em;font-weight:600;margin-left:4px;letter-spacing:0}
.stat .label{margin-top:14px;font-size:14px;font-weight:600;color:#F3EFE6}
.stat .hint{margin-top:6px;font-size:13px;color:#A9B3AD;line-height:1.7}
.band-note{margin-top:40px;font-size:13px;color:#A9B3AD}

/* ================= FAQ ================= */
.faq-grid{
  display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);
  gap:56px;align-items:start;
}
.faq{background:var(--paper);border-top:1px solid var(--line);border-radius:0 0 var(--r-card) var(--r-card)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:22px 22px;
  font-size:17px;font-weight:600;line-height:1.6;color:var(--ink);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--sand);color:var(--green-800)}
.faq-item summary .sign{
  position:relative;flex:0 0 16px;width:16px;height:16px;margin-top:7px;
}
.faq-item summary .sign::before,
.faq-item summary .sign::after{
  content:"";position:absolute;background:var(--ink-3);border-radius:2px;
  transition:transform .2s var(--ease),opacity .2s var(--ease),background .2s var(--ease);
}
.faq-item summary .sign::before{left:0;top:7px;width:16px;height:2px}
.faq-item summary .sign::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open] summary{color:var(--green-800)}
.faq-item[open] summary .sign::after{transform:rotate(90deg);opacity:0}
.faq-item[open] summary .sign::before{background:var(--clay)}
.faq-body{
  padding:0 22px 26px;
  font-size:15px;line-height:1.9;color:var(--ink-2);max-width:760px;
}

/* ================= CTA 条 ================= */
.cta-band{
  background:var(--green-800);
  color:#F3EFE6;
  padding:72px 0;
  border-top:1px solid var(--clay);
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.cta-inner h2{color:#F3EFE6;font-size:clamp(22px,2.4vw,30px)}
.cta-inner p{margin-top:12px;color:#C9D3CD;font-size:15px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}

/* ================= 表单 ================= */
.lead-grid{
  display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);
  gap:56px;align-items:start;
}
.mini-list{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.mini-list li{
  position:relative;padding-left:22px;font-size:14px;color:var(--ink-2);
}
.mini-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;
  border-radius:2px;background:var(--green-700);
}
.lead-form{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:32px;
  box-shadow:var(--sh-1);
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--ink-2);font-weight:600}
.field .req{color:var(--clay)}
.field input,.field textarea{
  width:100%;
  height:48px;padding:0 14px;
  background:var(--field);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  font-size:15px;color:var(--ink);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.field textarea{height:auto;min-height:112px;padding:13px 14px;line-height:1.75;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,.field textarea:focus{
  outline:none;background:#fff;
  border-color:var(--green-700);
  box-shadow:0 0 0 3px rgba(20,52,43,.12);
}
.field.has-error input,.field.has-error textarea{border-color:var(--warn)}
.field .err{display:none;font-size:13px;color:var(--warn)}
.field.has-error .err{display:block}

.check-field{display:flex;align-items:flex-start;gap:12px;margin-top:22px}
.check-field input[type="checkbox"]{
  appearance:none;-webkit-appearance:none;
  flex:0 0 16px;width:16px;height:16px;margin-top:7px;
  border:1px solid var(--line);border-radius:5px;background:var(--field);
  cursor:pointer;position:relative;
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.check-field input[type="checkbox"]:checked{background:var(--green-800);border-color:var(--green-800)}
.check-field input[type="checkbox"]:checked::after{
  content:"";position:absolute;left:4px;top:1px;
  width:5px;height:9px;border:2px solid #fff;border-top:0;border-left:0;
  transform:rotate(45deg);
}
.check-field input[type="checkbox"]:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.check-field label{font-size:13px;color:var(--ink-2);line-height:1.75}
.check-field a{color:var(--green-700);box-shadow:inset 0 -1px 0 rgba(31,74,61,.4)}

.form-actions{margin-top:26px}
.form-note{margin-top:16px;font-size:13px;color:var(--ink-3);line-height:1.7}
.form-alert{
  display:none;margin-top:20px;padding:16px 18px;border-radius:14px;
  font-size:14px;line-height:1.75;
}
.form-alert.is-ok{display:block;background:rgba(47,107,79,.10);color:var(--ok);border:1px solid rgba(47,107,79,.24)}
.form-alert.is-err{display:block;background:rgba(180,85,44,.10);color:var(--warn);border:1px solid rgba(180,85,44,.24)}

/* ================= 页脚 ================= */
.site-foot{
  background:var(--green-900);
  color:#D9D3C6;
  border-top:1px solid var(--clay);
  padding:72px 0 0;
  margin-top:auto;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:44px;
  padding-bottom:52px;
}
.site-foot .brand{color:#F3EFE6}
.site-foot .brand:hover{color:#F3EFE6}
.site-foot .brand-mark{background:#F3EFE6;color:var(--green-900)}
.foot-desc{margin-top:18px;font-size:13.5px;line-height:1.85;color:#B7BEB9;max-width:340px}
.foot-contact{margin-top:18px;font-size:13.5px;line-height:1.9;color:#B7BEB9}
.foot-contact strong{color:#F3EFE6;font-weight:600}
.foot-qr{margin-top:20px;max-width:150px;color:#8A968F;border-color:rgba(227,222,211,.24);background:rgba(243,239,230,.05)}
.foot-col h4{font-size:14px;color:#F3EFE6;margin-bottom:18px;letter-spacing:.02em}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a{font-size:13.5px;color:#B7BEB9}
.foot-col a:hover{color:var(--clay);text-decoration:underline;text-underline-offset:3px}
.foot-bottom{
  border-top:1px solid rgba(227,222,211,.16);
  padding:22px 0 28px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#8A968F;
}

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

/* ================= 响应式 ================= */
@media (max-width:1439.98px){
  .wrap{max-width:1040px}
}
@media (min-width:992px) and (max-width:1199.98px){
  :root{--nav-w:76px}
  .sidenav{padding:22px 10px;align-items:center;gap:16px}
  .sidenav-head{width:100%;justify-content:center}
  .sidenav .brand{gap:0;justify-content:center;padding:0}
  .sidenav .brand-text{display:none}
  .nav-groups{width:100%}
  .nav-group-title{display:none}
  .nav-link{justify-content:center;padding:0;gap:0}
  .nav-link span{display:none}
  .nav-link::after{
    content:attr(data-label);
    position:absolute;left:calc(100% + 12px);top:50%;
    transform:translateY(-50%) scale(.96);
    background:var(--green-900);color:#F3EFE6;
    padding:6px 11px;border-radius:8px;font-size:12px;white-space:nowrap;
    opacity:0;pointer-events:none;
    transition:opacity .15s var(--ease),transform .15s var(--ease);
    z-index:20;
  }
  .nav-link:hover::after,.nav-link:focus-visible::after{opacity:1;transform:translateY(-50%) scale(1)}
  .nav-card{display:none}
  .hero-grid{gap:36px}
  .split,.faq-grid,.lead-grid{gap:36px}
  .signal-row{grid-template-columns:150px minmax(0,1fr) 180px;gap:20px}
}
@media (max-width:991.98px){
  .sidenav{
    width:280px;
    transform:translateX(-100%);
    box-shadow:none;
  }
  .sidenav.is-open{transform:translateX(0);box-shadow:0 26px 64px -20px rgba(15,38,32,.45)}
  .sidenav-close{display:inline-flex}
  .app-main{margin-left:0}
  .topbar{display:flex}
  .nav-mask{display:block}
  .sec{padding:72px 0}
  .hero{padding-bottom:64px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure{aspect-ratio:16/10;order:-1}
  .split,.faq-grid,.lead-grid{grid-template-columns:1fr;gap:36px}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;margin-top:44px}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:26px}
  .signal-row{grid-template-columns:1fr;gap:10px;padding:22px 4px}
  .signal-row:hover{padding-left:4px}
  .num-list{grid-template-columns:1fr}
  .dark-band{padding:68px 0}
}
@media (max-width:767.98px){
  .wrap{padding:0 20px}
  .sec{padding:56px 0}
  .hero{padding-bottom:52px}
  .hero-sub{font-size:16px}
  .hero-points{gap:14px;flex-direction:column;align-items:flex-start}
  .form-grid{grid-template-columns:1fr}
  .lead-form{padding:24px}
  .foot-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .foot-bottom{flex-direction:column}
  .stat-row{grid-template-columns:1fr;gap:22px}
  .terms th,.terms td{padding:14px 16px}
  .faq-item summary{font-size:16px;padding:18px 16px}
  .faq-body{padding:0 16px 22px}
  .cta-band{padding:56px 0}
}
@media (max-width:479.98px){
  .btn-pill{width:100%}
  .hero-actions{flex-direction:column;align-items:stretch}
  .cta-actions{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --ink:#14342B;
  --ink-2:#1F4A3D;
  --ink-3:#2E6353;
  --ink-deep:#0F2620;
  --clay:#C0592F;
  --clay-h:#9E4522;
  --sand:#F6F3EC;
  --paper:#FFFFFF;
  --soft:#FBF9F4;
  --line:#E3DED3;
  --line-2:#EDE9E0;
  --tx:#15201C;
  --tx-2:#55635D;
  --tx-3:#8A968F;
  --ok:#2F6B4F;
  --warn:#B4552C;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --pill:999px;
  --sh-1:0 1px 2px rgba(20,52,43,.05), 0 12px 32px -14px rgba(20,52,43,.14);
  --sh-2:0 2px 6px rgba(20,52,43,.06), 0 22px 46px -18px rgba(20,52,43,.22);
  --side:248px;
  --rail:76px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Songti SC","Noto Serif SC",Georgia,"Times New Roman",serif;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--tx);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --bs-body-bg:var(--paper);
  --bs-body-color:var(--tx);
  --bs-border-color:var(--line);
  --bs-border-radius:var(--r-sm);
  --bs-primary:var(--ink);
  --bs-link-color:var(--ink);
  --bs-link-hover-color:var(--ink-2);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .15s var(--ease),border-color .15s var(--ease)}
a:hover{color:var(--ink-2)}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:4px}
::selection{background:rgba(192,89,47,.2)}

/* ============ 左侧 App Shell 布局 ============ */
.main{margin-left:var(--side);min-height:60vh}
.wrap{max-width:1240px;margin:0 auto;padding:0 32px;width:100%}
.sec{padding:96px 0}
.band{padding:96px 0}
.band-sand{background:var(--sand)}
.band-dark{background:var(--ink-deep);color:#D9D3C6}
.band-dark h2{color:#F3EFE6}
.band-dark p{color:rgba(217,211,198,.78)}

/* 顶栏（移动端） */
.topbar{display:none}

/* 侧栏 */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);
  background:var(--ink-deep);
  color:#D9D3C6;
  display:flex;flex-direction:column;
  padding:0 16px 20px;
  border-right:1px solid rgba(255,255,255,.07);
  z-index:1050;
  transition:width .22s var(--ease),transform .28s var(--ease);
}
.side-top{display:flex;align-items:center;justify-content:space-between;height:76px;padding:0 8px;flex:0 0 auto}
.side-close{display:none;width:34px;height:34px;border:1px solid rgba(243,239,230,.3);border-radius:10px;color:#F3EFE6;place-items:center;font-size:15px}
.side-close:hover{border-color:var(--clay);color:#fff}
.side-body{flex:1 1 auto;overflow-y:auto;padding:6px 0 16px;scrollbar-width:thin}
.side-body::-webkit-scrollbar{width:6px}
.side-body::-webkit-scrollbar-thumb{background:rgba(255,255,255,.15);border-radius:3px}
.side-label{font-size:12px;letter-spacing:.12em;color:rgba(243,239,230,.48);padding:18px 12px 8px;font-weight:500}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:10px;
  font-size:14px;font-weight:500;color:rgba(243,239,230,.82);
  transition:background .15s var(--ease),color .15s var(--ease);
}
.side-link i{width:18px;text-align:center;font-size:15px;opacity:.9;flex:0 0 auto}
.side-link:hover{background:rgba(255,255,255,.06);color:#fff}
.side-link.is-active{background:rgba(192,89,47,.16);color:#fff}
.side-link.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:2px;background:var(--clay);
}
.side-card{
  flex:0 0 auto;border:1px solid rgba(255,255,255,.14);border-radius:var(--r-md);
  padding:16px;background:rgba(255,255,255,.04);
}
.side-card-t{font-size:14px;font-weight:600;color:#F3EFE6;line-height:1.5}
.side-card-d{font-size:12px;color:rgba(243,239,230,.6);margin-top:6px}
.side-btn{
  display:inline-flex;align-items:center;justify-content:center;
  margin-top:12px;padding:8px 16px;border:1px solid rgba(243,239,230,.4);
  border-radius:var(--pill);font-size:13px;color:#F3EFE6;
  transition:background .15s var(--ease),border-color .15s var(--ease),color .15s var(--ease);
}
.side-btn:hover{border-color:var(--clay);background:rgba(192,89,47,.22);color:#fff}
.side-qr{
  margin-top:14px;height:64px;border:1px dashed rgba(255,255,255,.22);border-radius:10px;
  display:grid;place-items:center;font-size:11px;color:rgba(243,239,230,.5);text-align:center;line-height:1.5;
}
.scrim{
  position:fixed;inset:0;background:rgba(15,38,32,.45);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
  z-index:1045;
}
.scrim.is-on{opacity:1;visibility:visible}

/* 品牌 */
.brand{display:inline-flex;align-items:center;gap:10px;padding:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--clay);color:#fff;
  display:grid;place-items:center;font-size:15px;flex:0 0 auto;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:#F3EFE6}

/* ============ 按钮 ============ */
.btn-main,.btn-ghost,.btn-clay,.btn-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--pill);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background .15s var(--ease),border-color .15s var(--ease),color .15s var(--ease),transform .15s var(--ease),box-shadow .15s var(--ease);
}
.btn-main{background:var(--ink);border-color:var(--ink);color:#F3EFE6}
.btn-main:hover{background:var(--ink-2);border-color:var(--ink-2);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(20,52,43,.06);color:var(--ink)}
.btn-clay{background:var(--clay);border-color:var(--clay);color:#fff}
.btn-clay:hover{background:var(--clay-h);border-color:var(--clay-h);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-light{background:transparent;border-color:rgba(243,239,230,.42);color:#F3EFE6}
.btn-light:hover{border-color:var(--clay);background:rgba(192,89,47,.18);color:#fff}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.tlink{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.tlink i{font-size:12px;transition:transform .18s var(--ease)}
.tlink:hover{border-bottom-color:var(--ink);color:var(--ink)}
.tlink:hover i{transform:translateX(3px)}

/* ============ 通用文字与标题 ============ */
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--clay);margin-bottom:16px;
}
h1{font-size:clamp(30px,4vw,52px);font-weight:700;line-height:1.15;letter-spacing:-.02em;font-family:var(--serif)}
h2{font-size:clamp(24px,2.6vw,36px);font-weight:600;line-height:1.25;letter-spacing:-.01em}
h3{font-size:20px;font-weight:600;line-height:1.45}
.sec-head{margin-bottom:44px;max-width:820px}
.sec-head p{margin-top:14px;font-size:15px;color:var(--tx-2)}
.band-dark .sec-head p{color:rgba(217,211,198,.78)}

/* ============ 面包屑 ============ */
.crumbs{padding:28px 0 0;font-size:13px;color:var(--tx-3)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li:not(:last-child)::after{content:"/";color:var(--line)}
.crumbs a:hover{color:var(--clay)}
.crumbs li[aria-current]{color:var(--ink);font-weight:500}

/* ============ Hero ============ */
.hero{padding:24px 0 0}
.hero-copy{max-width:840px}
.hero h1{margin-bottom:20px}
.hero h1 .kw{border-bottom:3px solid rgba(192,89,47,.45)}
.hero-lead{font-size:17px;line-height:1.9;color:var(--tx-2);max-width:660px}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;margin-top:32px}
.hero-trust li{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--tx-2)}
.hero-trust i{color:var(--clay);font-size:13px}
.hero-figure{margin-top:48px}
.hero-figure img{
  width:100%;aspect-ratio:21/9;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid var(--line);
}

/* ============ 卡片网格：需求判断 ============ */
.ask-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.ask{
  background:var(--paper);border:1px solid var(--line);border-radius:18px;
  padding:26px 22px;display:flex;flex-direction:column;
  transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.ask-no{font-family:var(--serif);font-size:32px;font-weight:700;line-height:1;color:rgba(20,52,43,.18)}
.ask h3{font-size:17px;margin-top:14px;line-height:1.55}
.ask p{font-size:13px;color:var(--tx-2);margin-top:10px;line-height:1.8}
.ask-foot{margin-top:auto;padding-top:16px;font-size:13px;color:var(--clay);display:flex;align-items:center;gap:6px}
.ask:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-1)}

/* ============ 五步流程 ============ */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;position:relative;margin-top:8px}
.steps::before{content:"";position:absolute;top:26px;left:26px;right:26px;height:1px;background:var(--line)}
.step{position:relative;padding-top:0}
.step-no{
  position:relative;z-index:1;display:inline-flex;align-items:center;justify-content:center;
  width:52px;height:52px;border-radius:50%;background:var(--paper);
  border:1px solid var(--line);color:var(--ink);font-weight:700;font-size:15px;
  transition:border-color .18s var(--ease),background .18s var(--ease),color .18s var(--ease);
}
.step h3{font-size:18px;margin-top:20px}
.step p{font-size:14px;color:var(--tx-2);margin-top:10px;line-height:1.8}
.step:hover .step-no{border-color:var(--clay);background:rgba(192,89,47,.08);color:var(--clay-h)}
.step-extra{display:flex;align-items:center;gap:8px;margin-top:16px;font-size:12px;color:var(--tx-3)}
.step-extra i{color:var(--clay)}

/* ============ 交付物：图文分栏 ============ */
.split{display:grid;grid-template-columns:1.02fr 1fr;gap:56px;align-items:center}
.split-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid var(--line);
}
.deliver{display:grid;gap:24px;margin-top:28px}
.deliver li{display:flex;gap:16px}
.d-no{
  flex:0 0 auto;width:36px;height:36px;border-radius:11px;background:rgba(20,52,43,.06);
  color:var(--ink);display:grid;place-items:center;font-size:13px;font-weight:700;
}
.d-t{font-size:16px;font-weight:600}
.d-d{font-size:14px;color:var(--tx-2);margin-top:5px;line-height:1.8}

/* ============ 数据条 ============ */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
  border-top:1px solid rgba(243,239,230,.2);padding-top:44px;
}
.stat{padding-left:28px;border-left:1px solid rgba(243,239,230,.16)}
.stat:first-child{padding-left:0;border-left:0}
.stat-line{display:flex;align-items:baseline;gap:10px}
.stat-no{font-family:var(--serif);font-size:clamp(48px,5vw,68px);font-weight:700;line-height:1;color:#F3EFE6}
.stat-u{font-size:14px;color:rgba(217,211,198,.72)}
.stat p{font-size:13px;margin-top:16px;line-height:1.8;color:rgba(217,211,198,.68)}

/* ============ 适用场景 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.scene{
  display:flex;gap:18px;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:26px;
  transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.scene-ic{
  flex:0 0 auto;width:46px;height:46px;border-radius:14px;background:rgba(20,52,43,.06);
  color:var(--ink);display:grid;place-items:center;font-size:17px;
}
.scene h3{font-size:17px;margin-top:12px}
.scene p{font-size:14px;color:var(--tx-2);margin-top:8px;line-height:1.8}
.scene:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-1)}
.tag{
  display:inline-block;font-size:12px;letter-spacing:.08em;font-weight:600;
  padding:4px 10px;border-radius:var(--pill);
  background:rgba(20,52,43,.06);color:var(--ink);
}
.tag-clay{background:rgba(192,89,47,.1);color:var(--clay-h)}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
.faq-intro p{font-size:15px;color:var(--tx-2);margin-top:16px;max-width:380px}
.faq-foot{margin-top:26px}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line-2)}
.accordion-item:first-child{border-top:1px solid var(--line-2)}
.accordion-button{
  background:transparent;border:0;border-radius:0!important;
  padding:22px 44px 22px 0;font-size:17px;font-weight:600;color:var(--tx);line-height:1.55;
  box-shadow:none!important;
}
.accordion-button:hover{background:var(--sand);color:var(--ink)}
.accordion-button:not(.collapsed){background:transparent;color:var(--ink)}
.accordion-button::after{
  content:"＋";background-image:none!important;transform:none!important;
  display:flex;align-items:center;justify-content:center;
  width:26px;height:26px;font-size:14px;color:var(--tx-3);
  position:absolute;right:8px;top:50%;margin-top:-13px;
}
.accordion-button:not(.collapsed)::after{content:"−";color:var(--clay)}
.accordion-button:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:8px}
.accordion-body{padding:0 60px 22px 0;font-size:15px;line-height:1.85;color:var(--tx-2)}

/* ============ 表单区 ============ */
.lead-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:start}
.lead-sub{font-size:15px;color:var(--tx-2);margin-top:14px;max-width:520px}
.lead-form{margin-top:34px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-1)}
.field{margin-bottom:20px}
.field label{display:block;font-size:13px;color:var(--tx-2);margin-bottom:8px}
.field .form-control{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--soft);
  font-size:15px;color:var(--tx);box-shadow:none;transition:border-color .15s var(--ease),box-shadow .15s var(--ease),background .15s var(--ease);
}
textarea.form-control{height:auto;min-height:112px;padding:12px 14px;resize:vertical;line-height:1.8}
.form-control::placeholder{color:var(--tx-3)}
.form-control:focus{border-color:var(--ink);background:var(--paper);box-shadow:0 0 0 3px rgba(20,52,43,.12)}
.field-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-check{display:flex;align-items:flex-start;gap:10px;margin:4px 0 22px;padding-left:0}
.form-check-input{
  flex:0 0 auto;width:16px;height:16px;margin:5px 0 0;border:1px solid var(--line);
  border-radius:4px;background:var(--soft);box-shadow:none!important;
}
.form-check-input:checked{background-color:var(--ink);border-color:var(--ink)}
.form-check-input:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.form-check-label{font-size:13px;color:var(--tx-2);line-height:1.75}
.form-check-label a{color:var(--ink);border-bottom:1px solid var(--line)}
.form-check-label a:hover{border-bottom-color:var(--ink)}
.form-submit{width:100%;height:48px;border-radius:var(--pill);background:var(--ink);color:#F3EFE6;font-size:15px;font-weight:600;border:1px solid var(--ink);transition:background .15s var(--ease),transform .15s var(--ease)}
.form-submit:hover{background:var(--ink-2);border-color:var(--ink-2);transform:translateY(-1px)}
.note{margin-top:18px;padding:14px 16px;border-radius:var(--r-sm);font-size:14px;line-height:1.75}
.note-ok{background:rgba(47,107,79,.1);color:var(--ok);border:1px solid rgba(47,107,79,.25)}
.note-err{background:rgba(180,85,44,.1);color:var(--warn);border:1px solid rgba(180,85,44,.25)}
.lead-side{display:grid;gap:22px}
.lead-side figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);border:1px solid var(--line)}
.info-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px}
.info-card h3{font-size:17px}
.info-list{margin-top:18px;display:grid;gap:14px}
.info-list li{display:flex;gap:12px;font-size:14px;color:var(--tx-2);line-height:1.8}
.info-list i{color:var(--clay);font-size:13px;margin-top:6px}

/* ============ CTA 条 ============ */
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner h2{max-width:640px}
.cta-inner p{margin-top:14px;font-size:15px;max-width:600px}
.cta-btns{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-foot{
  margin-left:var(--side);
  background:var(--ink-deep);color:#D9D3C6;
  border-top:1px solid var(--clay);
}
.site-foot .wrap{padding-top:72px}
.site-foot .brand-text{color:#F3EFE6}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:56px}
.foot-desc{font-size:14px;line-height:1.9;color:rgba(217,211,198,.78);margin-top:18px;max-width:380px}
.foot-contact{font-size:13px;color:rgba(217,211,198,.72);margin-top:18px;line-height:2}
.foot-contact strong{color:#F3EFE6;font-weight:600}
.foot-qr{
  margin-top:18px;width:118px;height:118px;border:1px dashed rgba(255,255,255,.24);border-radius:12px;
  display:grid;place-items:center;text-align:center;font-size:12px;line-height:1.6;color:rgba(217,211,198,.55);
}
.foot-col h4{font-size:14px;font-weight:600;color:#F3EFE6;margin-bottom:18px}
.foot-col ul{display:grid;gap:11px}
.foot-col a{font-size:14px;color:rgba(217,211,198,.78)}
.foot-col a:hover{color:var(--clay);text-decoration:underline;text-underline-offset:3px}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 30px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(217,211,198,.58);
}

/* ============ 入场动效 ============ */
.js .reveal{opacity:0;transform:translateY(12px)}
.js .reveal.in{opacity:1;transform:none;transition:opacity .4s var(--ease),transform .4s var(--ease)}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none}
  *{transition-duration:.001ms!important;animation-duration:.001ms!important}
}

/* ============ 响应式：992–1199 图标窄栏 ============ */
@media (max-width:1199.98px){
  .main{margin-left:var(--rail)}
  .site-foot{margin-left:var(--rail)}
  .sidenav{width:var(--rail);padding:0 12px 16px;align-items:center}
  .side-top{justify-content:center;padding:0}
  .side-text{display:none}
  .side-label{padding:16px 0 8px;text-align:center;font-size:10px}
  .side-body{width:100%}
  .side-link{justify-content:center;padding:0;gap:0}
  .side-link::after{
    content:attr(data-tip);position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:#fff;color:var(--ink);font-size:12px;font-weight:600;padding:6px 10px;border-radius:8px;
    white-space:nowrap;box-shadow:var(--sh-1);opacity:0;pointer-events:none;
    transition:opacity .15s var(--ease);z-index:20;
  }
  .side-link:hover::after,.side-link:focus-visible::after{opacity:1}
  .side-card{width:100%;padding:12px 10px;text-align:center}
  .side-btn{padding:8px;width:100%;font-size:0}
  .side-btn::before{content:"\f0e0";font-family:"Font Awesome 6 Free";font-weight:900;font-size:14px}
  .side-qr{height:48px;font-size:0}
  .side-qr::before{content:"\f029";font-family:"Font Awesome 6 Free";font-weight:400;font-size:18px;color:rgba(243,239,230,.5)}
  .split{gap:40px}
  .faq-grid{gap:36px}
  .lead-grid{gap:36px}
}

/* ============ 响应式：768–991 顶部栏 + 抽屉 ============ */
@media (max-width:991.98px){
  .topbar{
    display:flex;align-items:center;gap:14px;
    position:fixed;top:0;left:0;right:0;height:60px;padding:0 20px;
    background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);z-index:1040;
  }
  .topbar .brand-text{color:var(--ink)}
  .topbar .brand-mark{width:30px;height:30px;font-size:13px}
  .burger{
    width:38px;height:38px;border:1px solid var(--line);border-radius:10px;
    color:var(--ink);display:grid;place-items:center;font-size:15px;background:var(--paper);
  }
  .burger:hover{border-color:var(--ink)}
  .sidenav{width:280px;padding:0 16px 20px;align-items:stretch;transform:translateX(-100%)}
  .sidenav.is-open{transform:translateX(0)}
  .side-top{justify-content:space-between;padding:0 8px;height:64px}
  .side-close{display:grid}
  .side-text{display:inline}
  .side-label{padding:18px 12px 8px;text-align:left;font-size:12px}
  .side-link{justify-content:flex-start;padding:0 12px;gap:12px}
  .side-link::after{content:none}
  .side-card{width:auto;padding:16px;text-align:left}
  .side-btn{padding:8px 16px;width:auto;font-size:13px}
  .side-btn::before{content:none}
  .side-qr{height:64px;font-size:11px}
  .side-qr::before{content:none}
  .main{margin-left:0;padding-top:60px}
  .site-foot{margin-left:0}
  .sec,.band{padding:72px 0}
  .wrap{padding:0 24px}
  .ask-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px}
  .steps::before{display:none}
  .split{grid-template-columns:1fr;gap:36px}
  .stats{grid-template-columns:repeat(2,1fr);gap:28px}
  .stat{padding-left:0;border-left:0;padding-top:24px;border-top:1px solid rgba(243,239,230,.16)}
  .stat:first-child{padding-top:0;border-top:0}
  .scene-grid{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .lead-grid{grid-template-columns:1fr;gap:36px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-inner{flex-direction:column;align-items:flex-start}
}

/* ============ 响应式：<768 ============ */
@media (max-width:767.98px){
  h1{font-size:clamp(27px,7vw,34px)}
  .sec,.band{padding:56px 0}
  .wrap{padding:0 20px}
  .hero-lead{font-size:16px}
  .hero-btns{gap:10px}
  .btn-main,.btn-ghost,.btn-clay,.btn-light{height:46px;padding:0 20px;font-size:14px}
  .hero-figure img{aspect-ratio:16/10}
  .ask-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:0}
  .step{padding:0 0 32px 60px;position:relative}
  .step::before{content:"";position:absolute;left:25px;top:56px;bottom:0;width:1px;background:var(--line)}
  .step:last-child{padding-bottom:0}
  .step:last-child::before{display:none}
  .step-no{position:absolute;left:0;top:0;width:52px;height:52px}
  .step h3{margin-top:0;font-size:17px}
  .split-figure img{aspect-ratio:16/10}
  .stats{grid-template-columns:1fr;gap:22px}
  .scene{flex-direction:column;gap:12px}
  .accordion-button{font-size:16px;padding:18px 40px 18px 0}
  .accordion-body{padding-right:20px}
  .lead-form{padding:22px}
  .field-2{grid-template-columns:1fr;gap:0}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .foot-bottom{flex-direction:column;gap:8px}
  .crumbs{padding-top:22px}
}

@media (max-width:520px){
  .hero-trust{gap:14px}
  .hero-trust li{width:100%}
  .cta-btns{width:100%}
  .cta-btns a{width:100%}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --ink:#14342B;
  --ink-2:#0F2620;
  --ink-3:#1F4A3D;
  --ink-4:#2E6353;
  --clay:#C0592F;
  --clay-dark:#9E4522;
  --clay-soft:#E08A5F;
  --sand:#F6F3EC;
  --sand-deep:#EFEBE1;
  --paper:#FFFFFF;
  --paper-warm:#FCFBF7;
  --field:#FBF9F4;
  --dark-text:#F3EFE6;
  --t1:#15201C;
  --t2:#55635D;
  --t3:#8A968F;
  --line:#E3DED3;
  --line-2:#EDE9E0;
  --ok:#2F6B4F;
  --warn:#B4552C;
  --r-card:18px;
  --r-img:20px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,52,43,.05),0 12px 32px -14px rgba(20,52,43,.14);
  --sh-2:0 2px 4px rgba(20,52,43,.06),0 22px 44px -18px rgba(20,52,43,.20);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-w:248px;
  --rail-w:76px;
}

/* ============ Bootstrap 变量重绘 ============ */
:root{
  --bs-primary:#14342B;
  --bs-primary-rgb:20,52,43;
  --bs-link-color:#14342B;
  --bs-link-hover-color:#9E4522;
  --bs-body-bg:#FFFFFF;
  --bs-body-color:#15201C;
  --bs-border-color:#E3DED3;
  --bs-border-radius:18px;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --bs-font-sans-serif:var(--bs-body-font-family);
}

/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.85;
  color:var(--t1);
  background:var(--sand);
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--clay)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:600;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:8px}
::selection{background:rgba(192,89,47,.18)}

/* ============ 容器 ============ */
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 32px}
.sec{padding:96px 0}
.sec-sand{background:var(--sand)}
.sec-paper{background:var(--paper)}

/* ============ 顶部条（移动端） ============ */
.topbar{
  position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  display:flex;align-items:center;gap:12px;padding:0 18px;
  background:rgba(252,251,247,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.burger{
  width:40px;height:40px;border:1px solid var(--line);border-radius:12px;
  background:#fff;color:var(--ink);display:grid;place-items:center;font-size:15px;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.burger:hover{border-color:var(--ink);background:rgba(20,52,43,.05)}
.brand{display:flex;align-items:center;gap:10px;padding:6px 0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);color:var(--dark-text);
  display:grid;place-items:center;font-size:14px;flex:0 0 auto;
}
.brand-text{font-weight:700;font-size:16px;letter-spacing:.01em;color:var(--ink);white-space:nowrap}

/* ============ 左侧 App Shell 导航 ============ */
.side-nav{
  position:fixed;top:0;bottom:0;left:0;width:280px;z-index:60;
  display:flex;flex-direction:column;gap:14px;
  padding:18px 16px;
  background:var(--paper-warm);
  border-right:1px solid var(--line);
  overflow-y:auto;
  transform:translateX(-100%);
  transition:transform .28s var(--ease);
}
.side-nav.open{transform:none}
.side-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:4px 0 6px}
.side-close{
  width:36px;height:36px;border:1px solid var(--line);border-radius:10px;
  display:grid;place-items:center;color:var(--t2);background:#fff;
}
.side-close:hover{border-color:var(--ink);color:var(--ink)}
.side-menu{display:grid;gap:4px;margin-top:4px}
.group-title{
  font-size:12px;letter-spacing:.12em;color:var(--t3);
  margin:16px 0 6px;padding-left:12px;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:10px;
  font-size:14px;font-weight:500;color:var(--t2);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-item i{width:18px;text-align:center;font-size:14px;color:var(--t3);transition:color .18s var(--ease)}
.nav-item:hover{background:rgba(20,52,43,.05);color:var(--ink)}
.nav-item:hover i{color:var(--ink-4)}
.nav-item.active{background:rgba(20,52,43,.06);color:var(--ink);font-weight:600}
.nav-item.active i{color:var(--ink)}
.nav-item.active::before{
  content:"";position:absolute;left:-16px;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--clay);
}
.side-card{
  margin-top:auto;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:14px;
}
.side-card p{font-size:13px;line-height:1.7;color:var(--t2);margin-bottom:10px}
.btn-line{
  display:block;text-align:center;font-size:13px;font-weight:600;
  border:1px solid var(--ink);border-radius:var(--r-pill);padding:9px 12px;color:var(--ink);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.btn-line:hover{background:rgba(20,52,43,.06);color:var(--ink)}
.side-qr{
  margin-top:12px;height:76px;border:1px dashed var(--line);border-radius:12px;
  display:grid;place-items:center;font-size:12px;color:var(--t3);text-align:center;line-height:1.6;
}
.scrim{
  position:fixed;inset:0;z-index:55;background:rgba(15,38,32,.45);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.scrim.show{opacity:1;visibility:visible}

/* ============ 主内容区 ============ */
.main-wrap{
  margin-left:0;padding-top:60px;min-height:100vh;background:var(--paper);
}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--t3);padding-top:26px;
}
.crumb a{color:var(--t3)}
.crumb a:hover{color:var(--ink);text-decoration:underline}
.crumb .sep{color:var(--line)}
.crumb .current{color:var(--ink);font-weight:600}

/* ============ 通用排版组件 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:600;letter-spacing:.12em;color:var(--clay);
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--clay);display:block}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head h2{font-size:clamp(24px,2.6vw,36px);margin:14px 0 12px;letter-spacing:-.01em}
.sec-head p{color:var(--t2);font-size:15px}
.lead-text{color:var(--t2);font-size:16px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn i{font-size:13px}
.btn-primary{background:var(--ink);color:var(--dark-text)}
.btn-primary:hover{background:var(--ink-3);color:var(--dark-text);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(20,52,43,.06);color:var(--ink);transform:translateY(-1px)}
.btn-clay{background:var(--clay);color:#fff}
.btn-clay:hover{background:var(--clay-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost-light{background:transparent;border-color:rgba(243,239,230,.5);color:var(--dark-text)}
.btn-ghost-light:hover{background:rgba(243,239,230,.12);color:var(--dark-text);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}

/* ============ 徽章 ============ */
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(20,52,43,.08);color:var(--ink-3);
}
.badge-clay{background:rgba(192,89,47,.12);color:var(--clay-dark)}

/* ============ Hero ============ */
.hero{padding:36px 0 64px;background:var(--paper-warm);border-bottom:1px solid var(--line-2)}
.hero-title{
  font-family:"Songti SC","Noto Serif SC","Source Han Serif SC",serif;
  font-size:clamp(30px,4vw,52px);font-weight:700;line-height:1.15;letter-spacing:-.02em;
  margin:16px 0 18px;color:var(--ink);
}
.hero-title .mark{box-shadow:inset 0 -.18em 0 rgba(192,89,47,.22)}
.hero-lead{max-width:660px;font-size:16px;color:var(--t2);margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-figure{
  position:relative;margin-top:46px;border:1px solid var(--line);
  border-radius:var(--r-img);overflow:hidden;background:var(--sand-deep);
}
.hero-figure img{width:100%;aspect-ratio:21/9;object-fit:cover}
.hero-figure::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:72px 100%;
}
.hero-figure::after{
  content:"";position:absolute;left:0;bottom:0;width:120px;height:3px;background:var(--clay);
}

/* ============ 场景卡片网格 ============ */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.case-card{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.case-card:hover{transform:translateY(-2px);border-color:rgba(20,52,43,.3);box-shadow:var(--sh-1)}
.case-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--sand-deep)}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.case-card:hover .case-media img{transform:scale(1.03)}
.case-media .badge-pill{position:absolute;top:14px;left:14px;background:rgba(255,255,255,.92);color:var(--ink-3)}
.case-body{display:flex;flex-direction:column;gap:10px;padding:22px 24px 24px;flex:1}
.case-body h3{font-size:20px}
.case-body p{font-size:14px;color:var(--t2);line-height:1.8}
.link-arrow{
  margin-top:auto;padding-top:6px;display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;color:var(--ink);
}
.link-arrow i{font-size:12px;transition:transform .18s var(--ease)}
.link-arrow:hover{color:var(--clay)}
.link-arrow:hover i{transform:translateX(3px)}

/* ============ 引用块 ============ */
.quote{
  margin-top:40px;background:var(--sand);border-left:3px solid var(--clay);
  border-radius:0 var(--r-card) var(--r-card) 0;padding:32px 36px;
}
.quote p{
  font-family:"Songti SC","Noto Serif SC",serif;
  font-size:clamp(17px,1.6vw,21px);line-height:1.75;color:var(--ink);margin-bottom:14px;
}
.quote cite{font-style:normal;font-size:13px;color:var(--t3);letter-spacing:.02em}

/* ============ 落地方式行式列表 ============ */
.mode-list{border-top:1px solid var(--line)}
.mode-row{
  display:grid;grid-template-columns:76px 240px 1fr;gap:24px;align-items:start;
  padding:28px 0;border-bottom:1px solid var(--line);
}
.mode-num{
  font-family:"Songti SC","Noto Serif SC",serif;
  font-size:30px;font-weight:700;line-height:1;color:var(--clay);
  font-variant-numeric:tabular-nums;
}
.mode-row h3{font-size:19px;margin-bottom:6px}
.mode-row p{font-size:14px;color:var(--t2)}

/* ============ 手风琴 FAQ ============ */
.faq-layout{display:grid;grid-template-columns:300px 1fr;gap:56px;align-items:start}
.faq-aside h2{font-size:clamp(24px,2.6vw,34px);margin:14px 0 12px}
.faq-aside p{font-size:14px;color:var(--t2);margin-bottom:22px}
.acc .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;border-radius:0}
.acc .accordion-button{
  position:relative;background:transparent;border:0;box-shadow:none;border-radius:0;
  padding:22px 52px 22px 0;font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.acc .accordion-button:not(.collapsed){background:transparent;color:var(--ink);box-shadow:none}
.acc .accordion-button:hover{background:rgba(246,243,236,.9)}
.acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--clay);outline-offset:-2px}
.acc .accordion-button::after{display:none}
.acc .accordion-button::before{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--t3);line-height:1;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.acc .accordion-button:not(.collapsed)::before{content:"−";color:var(--clay);transform:translateY(-50%) rotate(180deg)}
.acc .accordion-body{padding:0 52px 26px 0;font-size:15px;color:var(--t2);line-height:1.85}

/* ============ CTA 通栏 ============ */
.cta{background:var(--ink-2);color:var(--dark-text);padding:76px 0}
.cta-inner{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center}
.cta .eyebrow{color:var(--clay-soft)}
.cta .eyebrow::before{background:var(--clay-soft)}
.cta h2{color:var(--dark-text);font-size:clamp(22px,2.4vw,32px);margin:14px 0 14px}
.cta p{color:rgba(243,239,230,.72);font-size:15px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ============ 页脚 ============ */
.site-foot{background:var(--ink-2);color:#D9D3C6;border-top:1px solid rgba(192,89,47,.65)}
.site-foot .brand{padding:0}
.site-foot .brand-mark{background:rgba(243,239,230,.12);color:var(--dark-text)}
.site-foot .brand-text{color:var(--dark-text)}
.foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding:56px 0 40px;
}
.foot-brand .foot-desc{font-size:13.5px;line-height:1.85;color:rgba(217,211,198,.8);margin:16px 0 14px;max-width:320px}
.foot-contact{font-size:13px;line-height:1.9;color:rgba(217,211,198,.8)}
.foot-contact strong{color:var(--dark-text);font-weight:600}
.foot-qr{
  width:106px;height:106px;margin-top:16px;border:1px dashed rgba(217,211,198,.34);
  border-radius:12px;display:grid;place-items:center;text-align:center;
  font-size:12px;line-height:1.6;color:rgba(217,211,198,.6);
}
.foot-col h4{font-size:14px;color:var(--dark-text);margin-bottom:16px;font-weight:600}
.foot-col ul{display:grid;gap:10px}
.foot-col a{font-size:14px;color:#D9D3C6}
.foot-col a:hover{color:var(--clay-soft);text-decoration:underline}
.foot-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
  border-top:1px solid rgba(243,239,230,.12);padding:18px 0 26px;
  font-size:13px;color:rgba(217,211,198,.65);font-variant-numeric:tabular-nums;
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式：992–1199 窄图标栏 ============ */
@media (min-width:992px){
  .topbar{display:none}
  .scrim{display:none}
  .side-nav{
    transform:none;width:var(--rail-w);align-items:center;padding:20px 10px;
  }
  .side-head .brand-text{display:none}
  .side-close{display:none}
  .group-title{display:none}
  .side-menu{width:100%;display:grid;gap:6px;margin-top:8px}
  .nav-item{justify-content:center;padding:0}
  .nav-item .nav-label{display:none}
  .nav-item.active::before{left:-10px}
  .side-card{display:none}
  .nav-item::after{
    content:attr(data-tip);position:absolute;left:54px;top:50%;
    transform:translateY(-50%) translateX(-4px);
    background:var(--ink-2);color:var(--dark-text);font-size:12px;font-weight:500;
    padding:5px 10px;border-radius:8px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .16s var(--ease),transform .16s var(--ease);
    z-index:6;
  }
  .nav-item:hover::after{opacity:1;transform:translateY(-50%) translateX(0)}
  .main-wrap{margin-left:var(--rail-w);padding-top:0}
  .crumb{padding-top:34px}
  .hero{padding:24px 0 72px}
}

/* ============ 响应式：≥1200 完整侧栏 ============ */
@media (min-width:1200px){
  .side-nav{width:var(--nav-w);align-items:stretch;padding:22px 16px}
  .side-head .brand-text{display:inline}
  .group-title{display:block}
  .nav-item{justify-content:flex-start;padding:0 12px}
  .nav-item .nav-label{display:inline}
  .nav-item.active::before{left:-16px}
  .side-card{display:block}
  .nav-item::after{display:none}
  .main-wrap{margin-left:var(--nav-w)}
}

/* ============ 响应式：平板 ============ */
@media (max-width:1199px){
  .sec{padding:80px 0}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr;gap:26px}
  .cta-actions{justify-content:flex-start}
  .case-grid{gap:20px}
}

/* ============ 响应式：手机 ============ */
@media (max-width:767px){
  .wrap{padding:0 20px}
  .sec{padding:56px 0}
  .hero{padding:20px 0 52px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .hero-figure{margin-top:32px}
  .hero-figure img{aspect-ratio:16/10}
  .case-grid{grid-template-columns:1fr}
  .case-body{padding:20px}
  .mode-row{grid-template-columns:56px 1fr;gap:14px;padding:22px 0}
  .mode-num{font-size:24px}
  .quote{padding:24px 20px}
  .acc .accordion-button{font-size:16px;padding:18px 44px 18px 0}
  .acc .accordion-body{padding:0 44px 22px 0;font-size:14.5px}
  .cta{padding:56px 0}
  .foot-grid{grid-template-columns:1fr;gap:32px;padding:44px 0 32px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:6px}
}
@media (max-width:575px){
  .sec-head{margin-bottom:32px}
  .case-body h3{font-size:18px}
}

/* ============ 无障碍：减弱动效 ============ */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#14342B;
  --ink-deep:#0F2620;
  --ink-mid:#1F4A3D;
  --ink-2:#2E6353;
  --ink-soft:rgba(20,52,43,.06);
  --clay:#C0592F;
  --clay-dark:#9E4522;
  --clay-soft:rgba(192,89,47,.1);
  --sand:#F6F3EC;
  --paper:#FFFFFF;
  --t1:#15201C;
  --t2:#55635D;
  --t3:#8A968F;
  --line:#E3DED3;
  --div:#EDE9E0;
  --ok:#2F6B4F;
  --warn:#B4552C;
  --r-card:20px;
  --r-img:18px;
  --r-input:12px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(20,52,43,.05), 0 12px 32px -14px rgba(20,52,43,.14);
  --sh-hi:0 2px 6px rgba(20,52,43,.06), 0 20px 44px -18px rgba(20,52,43,.22);
  --side-w:248px;
  --ease:cubic-bezier(.22,.61,.36,1);

  --bs-primary:#14342B;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --bs-body-bg:#FFFFFF;
  --bs-body-color:#15201C;
  --bs-border-color:#E3DED3;
  --bs-border-radius:18px;
  --bs-link-color:#14342B;
  --bs-link-hover-color:#C0592F;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t1);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--clay);}
h1,h2,h3,h4,h5{margin:0;font-weight:600;color:var(--t1);letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.num{font-variant-numeric:tabular-nums;}

:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:4px;}
.btn:focus,.btn:focus-visible,.btn:active{box-shadow:none !important;}

.wrap{max-width:1240px;margin:0 auto;padding:0 32px;}

/* ---------- 左侧 App Shell ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side-w);
  background:var(--sand);
  border-right:1px solid var(--line);
  z-index:1040;
  transition:transform .28s var(--ease), width .24s var(--ease);
}
.side-inner{display:flex;flex-direction:column;height:100%;padding:24px 18px 20px;}
.side-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:26px;}
.side-close{display:none;border:0;background:transparent;color:var(--t2);font-size:20px;line-height:1;padding:6px;border-radius:8px;cursor:pointer;}
.side-close:hover{color:var(--clay);}

.brand{display:inline-flex;align-items:center;gap:10px;padding:4px 6px;border-radius:12px;}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ink);color:#F3EFE6;border-radius:11px;font-size:16px;
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--ink);white-space:nowrap;}

.side-menu{display:flex;flex-direction:column;gap:3px;overflow-y:auto;padding-right:2px;}
.menu-label{
  font-size:12px;letter-spacing:.12em;color:var(--t3);
  margin:16px 0 6px;padding-left:10px;text-transform:uppercase;
}
.menu-label:first-child{margin-top:0;}
.menu-item{
  display:flex;align-items:center;gap:11px;
  min-height:44px;padding:0 12px;border-radius:10px;
  font-size:14px;font-weight:500;color:var(--t2);
  position:relative;transition:background .2s var(--ease),color .2s var(--ease);
}
.menu-item i{width:18px;text-align:center;font-size:14px;color:var(--t3);transition:color .2s var(--ease);}
.menu-item:hover{background:rgba(20,52,43,.05);color:var(--ink);}
.menu-item:hover i{color:var(--ink-2);}
.menu-item.active{
  background:var(--ink-soft);color:var(--ink);font-weight:600;
}
.menu-item.active i{color:var(--ink);}
.menu-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  background:var(--ink);border-radius:3px;
}

.side-card{
  margin-top:auto;padding:16px;
  background:var(--paper);border:1px solid var(--line);border-radius:16px;
}
.side-card p{font-size:13px;color:var(--t2);line-height:1.7;margin-bottom:12px;}
.side-qr{
  margin-top:14px;padding:14px 10px;text-align:center;
  font-size:12px;color:var(--t3);letter-spacing:.06em;
  border:1px dashed var(--line);border-radius:12px;background:#FBF9F4;
}

.topbar{display:none;}
.nav-scrim{
  position:fixed;inset:0;background:rgba(15,38,32,.45);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
  z-index:1035;
}

/* ---------- 页面骨架 ---------- */
.page{margin-left:var(--side-w);min-height:100vh;}
.sec{padding:96px 0;}
.sec-sand{background:var(--sand);}
.sec-tight{padding:56px 0 0;}

/* ---------- 面包屑 ---------- */
.crumbs{padding:36px 0 0;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:0;padding:0;background:transparent;font-size:13px;color:var(--t3);
}
.breadcrumb-item{color:var(--t3);}
.breadcrumb-item+.breadcrumb-item::before{content:"/";color:var(--line);padding:0;}
.breadcrumb-item a{color:var(--t2);}
.breadcrumb-item a:hover{color:var(--clay);text-decoration:underline;}
.breadcrumb-item.active{color:var(--ink);font-weight:600;}

/* ---------- 页头 ---------- */
.page-head{padding:24px 0 44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;color:var(--clay);
  font-weight:600;margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--clay);display:inline-block;}
h1.page-title{
  font-family:"Songti SC","Noto Serif SC",Georgia,serif;
  font-size:clamp(30px,4vw,48px);
  line-height:1.16;letter-spacing:-.02em;font-weight:700;color:var(--ink);
  max-width:900px;
}
.page-title em{font-style:normal;box-shadow:inset 0 -8px 0 rgba(192,89,47,.16);}
.lead-text{
  margin-top:20px;max-width:720px;font-size:17px;line-height:1.9;color:var(--t2);
}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.04em;
  background:var(--ink-soft);color:var(--ink);font-weight:500;
}
.tag.clay{background:var(--clay-soft);color:var(--clay-dark);}

.banner-fig{
  margin-top:40px;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);
}
.banner-fig img{width:100%;aspect-ratio:21/9;object-fit:cover;}

/* ---------- 通用板块头 ---------- */
.sec-head{margin-bottom:44px;max-width:760px;}
.sec-head h2{
  font-size:clamp(24px,2.6vw,34px);line-height:1.28;color:var(--ink);
}
.sec-head p{margin-top:14px;font-size:15px;color:var(--t2);line-height:1.9;}
.sec-head .kicker{
  display:inline-block;font-size:12px;letter-spacing:.12em;color:var(--clay);
  font-weight:600;margin-bottom:14px;
}

/* ---------- 资料行列表 ---------- */
.doc-list{border-top:1px solid var(--line);}
.doc-row{
  display:grid;
  grid-template-columns:74px minmax(0,1fr) auto;
  gap:24px;align-items:center;
  padding:24px 0;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.doc-row:hover{background:rgba(20,52,43,.025);}
.doc-type{
  display:inline-flex;align-items:center;justify-content:center;
  height:34px;border-radius:8px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  background:var(--ink-soft);color:var(--ink);
}
.doc-type.t-clay{background:var(--clay-soft);color:var(--clay-dark);}
.doc-type.t-line{background:#FBF9F4;color:var(--t2);border:1px solid var(--line);}
.doc-main h3{font-size:18px;font-weight:600;line-height:1.5;}
.doc-main h3 a{color:var(--ink);}
.doc-main h3 a:hover{color:var(--clay);text-decoration:underline;text-underline-offset:4px;}
.doc-main p{margin-top:8px;font-size:14px;color:var(--t2);line-height:1.8;max-width:720px;}
.doc-meta{
  margin-top:10px;font-size:13px;color:var(--t3);letter-spacing:.02em;
}
.doc-meta span+span::before{content:"·";margin:0 8px;color:var(--line);}

/* ---------- 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;border:1px solid transparent;
  cursor:pointer;transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn i{font-size:13px;}
.btn-main{background:var(--ink);color:#F3EFE6;}
.btn-main:hover{background:var(--ink-mid);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-hi);}
.btn-main:active{transform:translateY(0);box-shadow:var(--sh);}
.btn-line{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-line:hover{background:var(--ink-soft);color:var(--ink);transform:translateY(-1px);}
.btn-soft{background:#FBF9F4;border-color:var(--line);color:var(--ink);}
.btn-soft:hover{border-color:var(--ink);background:var(--paper);color:var(--ink);}
.btn-paper{background:#F3EFE6;color:var(--ink-deep);}
.btn-paper:hover{background:#fff;color:var(--ink);transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:rgba(243,239,230,.45);color:#F3EFE6;}
.btn-ghost:hover{border-color:#F3EFE6;color:#fff;background:rgba(243,239,230,.08);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ink);border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.link-arrow i{transition:transform .2s var(--ease);}
.link-arrow:hover{color:var(--clay);border-bottom-color:var(--clay);}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- 使用路径 ---------- */
.use-grid{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:48px;align-items:start;
}
.use-fig{
  margin:0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  position:relative;
}
.use-fig img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.use-fig figcaption{
  position:absolute;left:16px;bottom:16px;
  background:rgba(15,38,32,.82);color:#F3EFE6;
  font-size:12px;letter-spacing:.04em;padding:7px 14px;border-radius:var(--r-pill);
}
.use-list{display:flex;flex-direction:column;gap:22px;}
.use-item{
  display:grid;grid-template-columns:52px minmax(0,1fr);gap:20px;
  padding-bottom:22px;border-bottom:1px solid var(--line);
}
.use-item:last-child{border-bottom:0;padding-bottom:0;}
.use-num{
  font-family:"Songti SC","Noto Serif SC",Georgia,serif;
  font-size:34px;line-height:1;color:var(--clay);font-weight:700;
}
.use-item h3{font-size:19px;margin-bottom:8px;}
.use-item p{font-size:15px;color:var(--t2);line-height:1.85;}

/* ---------- 迷你表单 ---------- */
.mini-grid{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:56px;align-items:center;
}
.mini-copy h2{font-size:clamp(24px,2.6vw,32px);color:var(--ink);line-height:1.3;}
.mini-copy p{margin-top:16px;font-size:15px;color:var(--t2);line-height:1.9;}
.mini-form{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh);
}
.mini-form label{
  display:block;font-size:13px;color:var(--t2);margin-bottom:8px;
}
.mini-row{display:flex;gap:12px;align-items:stretch;}
.form-control{
  height:48px;border-radius:var(--r-input);border:1px solid var(--line);
  background:#FBF9F4;padding:0 14px;font-size:15px;color:var(--t1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.form-control::placeholder{color:var(--t3);}
.form-control:focus{
  border-color:var(--ink);background:var(--paper);
  box-shadow:0 0 0 3px rgba(20,52,43,.12);outline:none;
}
.mini-row .btn{flex:0 0 auto;}
.hint{margin-top:12px;font-size:13px;color:var(--t3);line-height:1.7;}
.form-msg{
  margin-top:16px;padding:14px 16px;border-radius:12px;font-size:14px;line-height:1.75;
}
.form-msg.ok{background:rgba(47,107,79,.1);color:var(--ok);border:1px solid rgba(47,107,79,.22);}
.form-msg.err{background:rgba(180,85,44,.1);color:var(--warn);border:1px solid rgba(180,85,44,.22);}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--div);
  border-radius:0;
}
.faq-acc .accordion-header{margin:0;}
.faq-acc .accordion-button{
  display:flex;align-items:center;gap:16px;
  background:transparent;border:0;border-radius:0;
  padding:22px 8px 22px 0;
  font-size:17px;font-weight:600;color:var(--t1);line-height:1.6;
  box-shadow:none;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.faq-acc .accordion-button:hover{background:#FBF9F4;color:var(--ink);}
.faq-acc .accordion-button:not(.collapsed){color:var(--ink);background:transparent;}
.faq-acc .accordion-button::after{
  content:"+";background-image:none;margin-left:auto;
  width:26px;height:26px;flex:0 0 26px;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:400;color:var(--clay);line-height:1;
  transition:color .2s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−";color:var(--clay);}
.faq-acc .accordion-body{
  padding:0 56px 24px 0;font-size:15px;line-height:1.85;color:var(--t2);
}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--ink-deep);color:#F3EFE6;
  padding:72px 0;
}
.cta-in{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:32px;
}
.cta-in h2{color:#F3EFE6;font-size:clamp(23px,2.4vw,32px);line-height:1.3;}
.cta-in p{margin-top:12px;font-size:15px;color:#BDB7A8;max-width:620px;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-foot{
  background:var(--ink-deep);color:#D9D3C6;
  border-top:1px solid var(--clay);
  padding:72px 0 0;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:48px;padding-bottom:56px;
}
.foot-brand .brand{padding:0;}
.foot-brand .brand-mark{background:rgba(243,239,230,.12);color:#F3EFE6;}
.foot-brand .brand-text{color:#F3EFE6;}
.foot-desc{margin-top:18px;font-size:14px;line-height:1.9;color:#BDB7A8;max-width:320px;}
.foot-contact{margin-top:18px;font-size:13px;line-height:2;color:#9E9A8D;}
.foot-contact strong{color:#D9D3C6;font-weight:600;}
.foot-qr{
  margin-top:18px;width:120px;padding:24px 8px;text-align:center;
  font-size:12px;color:#8A968F;letter-spacing:.06em;
  border:1px dashed rgba(227,222,211,.28);border-radius:12px;
}
.foot-col h4{font-size:14px;color:#F3EFE6;margin-bottom:18px;letter-spacing:.04em;}
.foot-col ul{display:flex;flex-direction:column;gap:11px;}
.foot-col a{font-size:14px;color:#BDB7A8;}
.foot-col a:hover{color:var(--clay);text-decoration:underline;text-underline-offset:3px;}
.foot-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(227,222,211,.16);
  padding:22px 0 26px;font-size:13px;color:#8A968F;
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.in{opacity:1;transform:none;}

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

/* ---------- 断点 ---------- */
@media (max-width:1199.98px){
  :root{--side-w:76px;}
  .side-inner{padding:20px 10px;}
  .side-head{justify-content:center;margin-bottom:20px;}
  .brand-text{display:none;}
  .menu-label{display:none;}
  .menu-item{justify-content:center;padding:0;gap:0;}
  .menu-item span{display:none;}
  .menu-item.active::before{top:12px;bottom:12px;}
  .side-card{display:none;}
  .side-menu{gap:6px;}
}

@media (max-width:991.98px){
  .sec{padding:72px 0;}
  .use-grid{grid-template-columns:1fr;gap:36px;}
  .mini-grid{grid-template-columns:1fr;gap:32px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .doc-row{grid-template-columns:64px minmax(0,1fr);}
  .doc-row .doc-act{grid-column:2;justify-self:start;}
}

@media (max-width:767.98px){
  :root{--side-w:280px;}
  .side-nav{transform:translateX(-100%);box-shadow:0 0 40px rgba(15,38,32,.25);}
  .side-inner{padding:22px 18px;}
  .side-head{justify-content:space-between;margin-bottom:18px;}
  .brand-text{display:inline;}
  .menu-label{display:block;}
  .menu-item{justify-content:flex-start;padding:0 12px;gap:11px;}
  .menu-item span{display:inline;}
  .side-card{display:block;}
  .side-close{display:inline-flex;}

  .nav-scrim{display:block;}
  body.nav-open .side-nav{transform:translateX(0);}
  body.nav-open .nav-scrim{opacity:1;visibility:visible;}

  .page{margin-left:0;padding-top:64px;}

  .topbar{
    display:flex;align-items:center;gap:14px;
    position:fixed;top:0;left:0;right:0;height:64px;
    padding:0 18px;z-index:1030;
    background:rgba(246,243,236,.94);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .burger{
    width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
    background:var(--paper);color:var(--ink);font-size:16px;cursor:pointer;
    display:inline-flex;align-items:center;justify-content:center;
  }
  .burger:hover{border-color:var(--ink);}
  .topbar .brand{padding:0;}

  .wrap{padding:0 20px;}
  .sec{padding:56px 0;}
  .crumbs{padding-top:24px;}
  h1.page-title{font-size:clamp(26px,7vw,34px);}
  .lead-text{font-size:16px;}
  .banner-fig img{aspect-ratio:16/9;}
  .doc-row{grid-template-columns:1fr;gap:14px;padding:20px 0;}
  .doc-row .doc-act{grid-column:1;}
  .doc-type{justify-self:start;padding:0 12px;}
  .mini-form{padding:22px;}
  .mini-row{flex-direction:column;}
  .mini-row .btn{width:100%;}
  .cta-band{padding:56px 0;}
  .cta-actions .btn{width:100%;}
  .foot-grid{grid-template-columns:1fr;gap:34px;padding-bottom:40px;}
  .faq-acc .accordion-button{font-size:16px;padding-right:0;}
  .faq-acc .accordion-body{padding-right:8px;}
  .use-num{font-size:26px;}
}

/* roulang page: category5 */
/* ============ 1. 设计变量 ============ */
:root{
  --ink:#14342B;
  --ink-deep:#0F2620;
  --ink-mid:#1F4A3D;
  --ink-2:#2E6353;
  --clay:#C0592F;
  --clay-dark:#9E4522;
  --sand:#F6F3EC;
  --paper:#FFFFFF;
  --paper-soft:#FBF9F4;
  --cream:#F3EFE6;
  --text:#15201C;
  --text-2:#55635D;
  --text-3:#8A968F;
  --line:#E3DED3;
  --line-2:#EDE9E0;
  --ok:#2F6B4F;
  --warn:#B4552C;
  --r-card:20px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,52,43,.05),0 12px 32px -14px rgba(20,52,43,.14);
  --sh-2:0 2px 6px rgba(20,52,43,.06),0 22px 46px -20px rgba(20,52,43,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-w:248px;

  /* Bootstrap 变量重绘 */
  --bs-primary:#14342B;
  --bs-primary-rgb:20,52,43;
  --bs-body-bg:#F6F3EC;
  --bs-body-color:#15201C;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --bs-body-font-size:16px;
  --bs-body-line-height:1.85;
  --bs-border-color:#E3DED3;
  --bs-border-radius:12px;
  --bs-link-color:#1F4A3D;
  --bs-link-hover-color:#C0592F;
  --bs-link-decoration:none;
  --bs-focus-ring-color:rgba(192,89,47,.4);
}

/* ============ 2. 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--sand);
  color:var(--text);
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:var(--ink-mid);text-decoration:none;transition:color .15s var(--ease);}
a:hover{color:var(--clay);}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--ink);}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
[class*="fa-"]{line-height:1;}
:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:6px;}
[id]{scroll-margin-top:24px;}
::selection{background:rgba(192,89,47,.2);}

/* ============ 3. 布局骨架 ============ */
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.app{min-height:100vh;}
.app-main{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;min-width:0;}
.section{padding:96px 0;}
.section-sand{background:var(--sand);}
.section-paper{background:var(--paper);}

/* ============ 4. 左侧 App Shell 导航 ============ */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--paper);border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:6px;
  padding:24px 16px 20px;overflow-y:auto;z-index:1040;
}
.brand{display:inline-flex;align-items:center;gap:10px;padding:4px 8px 18px;color:var(--ink);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);color:var(--cream);
  display:grid;place-items:center;font-size:15px;flex:0 0 34px;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.nav-label{
  font-size:12px;letter-spacing:.12em;color:var(--text-3);
  padding:14px 12px 6px;font-weight:600;
}
.nav-link{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:10px;
  font-size:14px;font-weight:500;color:var(--text-2);
  transition:background .15s var(--ease),color .15s var(--ease);
}
.nav-link i{width:18px;text-align:center;font-size:14px;color:var(--text-3);transition:color .15s var(--ease);}
.nav-link:hover{background:rgba(20,52,43,.05);color:var(--ink);}
.nav-link:hover i{color:var(--ink);}
.nav-link.is-active{background:rgba(20,52,43,.06);color:var(--ink);font-weight:600;}
.nav-link.is-active i{color:var(--ink);}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;
  width:3px;border-radius:2px;background:var(--ink);
}
.side-card{
  margin-top:auto;background:var(--paper-soft);border:1px solid var(--line);
  border-radius:16px;padding:16px;
}
.side-card p{font-size:13.5px;color:var(--text-2);margin:0 0 12px;line-height:1.7;}
.side-note{display:block;font-size:12px;color:var(--text-3);margin-top:10px;}

/* 顶部栏（移动端） */
.topbar{
  display:none;position:sticky;top:0;z-index:1030;
  height:60px;align-items:center;gap:12px;padding:0 16px;
  background:rgba(246,243,236,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;transition:border-color .2s var(--ease);
}
.topbar.is-stuck{border-bottom-color:var(--line);}
.burger{
  width:40px;height:40px;flex:0 0 40px;border:1px solid var(--line);border-radius:10px;
  background:var(--paper);color:var(--ink);display:grid;place-items:center;font-size:15px;
  transition:border-color .15s var(--ease),background .15s var(--ease);
}
.burger:hover{border-color:var(--ink);}
.topbar .brand{padding:0;}

.scrim{
  position:fixed;inset:0;background:rgba(15,38,32,.45);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
  z-index:1035;
}
.scrim.show{opacity:1;visibility:visible;}

/* ============ 5. 面包屑 ============ */
.crumb{margin-bottom:24px;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:0;font-size:13px;color:var(--text-3);}
.crumb li{display:flex;align-items:center;}
.crumb li+li::before{content:"/";margin:0 10px;color:var(--line);}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--clay);}
.crumb [aria-current="page"]{color:var(--ink);font-weight:500;}

/* ============ 6. Hero ============ */
.page-hero{background:var(--paper);border-bottom:1px solid var(--line-2);padding:36px 0 64px;}
.eyebrow{
  font-size:12px;letter-spacing:.12em;color:var(--clay);font-weight:600;
  margin:0 0 12px;text-transform:uppercase;
}
.page-hero h1{
  font-family:"Songti SC","Noto Serif SC",Georgia,serif;
  font-size:clamp(30px,4vw,52px);line-height:1.15;letter-spacing:-.02em;
  font-weight:700;margin:0 0 18px;
}
.lede{font-size:clamp(16px,1.6vw,18px);color:var(--text-2);max-width:760px;margin:0 0 26px;line-height:1.8;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 36px;}
.hero-tags li{
  font-size:13px;color:var(--ink);background:rgba(20,52,43,.06);
  border-radius:var(--r-pill);padding:7px 15px;
}
.hero-figure{margin:0;position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);background:var(--paper-soft);}
.hero-figure img{width:100%;aspect-ratio:21/9;object-fit:cover;}
.hero-figure::after{
  content:"";position:absolute;left:0;bottom:0;height:3px;width:28%;background:var(--clay);
}
.hero-figure figcaption{
  position:absolute;left:20px;bottom:16px;font-size:13px;color:#FFFFFF;
  background:rgba(15,38,32,.62);padding:6px 12px;border-radius:var(--r-pill);
}

/* ============ 7. 两栏 + 锚点目录 ============ */
.two-col{display:grid;grid-template-columns:284px minmax(0,1fr);gap:48px;align-items:start;}
.toc{position:sticky;top:32px;}
.toc-title{font-size:12px;letter-spacing:.12em;color:var(--text-3);font-weight:600;margin:0 0 14px;}
.toc-list{display:grid;gap:2px;margin-bottom:22px;}
.toc-list a{
  display:block;padding:9px 14px;font-size:14px;color:var(--text-2);
  border-left:2px solid var(--line);border-radius:0 8px 8px 0;
  transition:color .15s var(--ease),border-color .15s var(--ease),background .15s var(--ease);
}
.toc-list a:hover{color:var(--ink);border-left-color:var(--clay);background:rgba(20,52,43,.04);}
.toc-card{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:20px;}
.toc-card p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0 0 14px;}

/* ============ 8. 内容卡 ============ */
.note-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:38px;margin-bottom:26px;
}
.note-card .num{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.1em;
  color:var(--clay);margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.note-card h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;margin:0 0 16px;}
.note-card>p{color:var(--text-2);font-size:15.5px;}
.dot-list{display:grid;gap:12px;margin-top:22px;}
.dot-list li{position:relative;padding-left:22px;font-size:15px;color:var(--text-2);}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;
  border-radius:2px;background:var(--clay);
}

/* ============ 9. 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:24px;}
.item-card{
  background:var(--paper-soft);border:1px solid var(--line);border-radius:18px;padding:24px;
  transition:transform .18s var(--ease),border-color .18s var(--ease);
}
.item-card:hover{transform:translateY(-2px);border-color:rgba(20,52,43,.3);}
.item-card h3{font-size:19px;margin:0 0 8px;}
.item-card h3 i{color:var(--clay);font-size:15px;margin-right:8px;}
.item-card p{font-size:14.5px;color:var(--text-2);line-height:1.8;margin:0;}

/* ============ 10. 阶段列表 ============ */
.stage-list{margin-top:26px;border-top:1px solid var(--line-2);}
.stage-list li{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:16px;
  padding:20px 0;border-bottom:1px solid var(--line-2);
}
.stage-no{
  font-size:22px;font-weight:700;color:var(--clay);line-height:1.3;
  font-variant-numeric:tabular-nums;
}
.stage-list h3{font-size:17px;margin:0 0 4px;}
.stage-list p{font-size:14.5px;color:var(--text-2);margin:0;}

/* ============ 11. FAQ 手风琴 ============ */
.acc-wrap{margin-top:26px;}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-width:0;--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-active-bg:transparent;--bs-accordion-active-color:#14342B;--bs-accordion-btn-color:#14342B;border:none;background:transparent;}
.accordion-item{border:0;border-bottom:1px solid var(--line-2);background:transparent;}
.accordion-item:first-of-type{border-top:1px solid var(--line-2);}
.accordion-button{
  position:relative;background:transparent;border-radius:0 !important;
  padding:20px 48px 20px 0;font-size:17px;font-weight:600;color:var(--ink);
  line-height:1.6;box-shadow:none !important;
  transition:background .15s var(--ease);
}
.accordion-button:hover{background:rgba(246,243,236,.9);}
.accordion-button:not(.collapsed){background:transparent;color:var(--ink);}
.accordion-button::before{
  content:"+";position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--text-3);line-height:1;
  transition:color .2s var(--ease);
}
.accordion-button:not(.collapsed)::before{content:"−";color:var(--clay);}
.accordion-button::after{display:none;}
.accordion-body{padding:0 48px 22px 0;font-size:15px;color:var(--text-2);line-height:1.85;}

/* ============ 12. 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;border:1px solid transparent;cursor:pointer;
  transition:background .15s var(--ease),color .15s var(--ease),border-color .15s var(--ease),transform .15s var(--ease),box-shadow .15s var(--ease);
}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--ink);color:var(--cream);}
.btn-primary:hover{background:var(--ink-mid);color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(20,52,43,.6);}
.btn-outline{border-color:rgba(20,52,43,.35);color:var(--ink);background:transparent;}
.btn-outline:hover{background:rgba(20,52,43,.06);border-color:var(--ink);color:var(--ink);}
.btn-clay{background:var(--clay);color:#FFF8F3;}
.btn-clay:hover{background:var(--clay-dark);color:#fff;transform:translateY(-1px);}
.btn-ghost-light{border-color:rgba(243,239,230,.4);color:var(--cream);background:transparent;}
.btn-ghost-light:hover{background:rgba(243,239,230,.12);border-color:rgba(243,239,230,.75);color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn .fa-arrow-right{transition:transform .15s var(--ease);}
.btn:hover .fa-arrow-right{transform:translateX(3px);}

/* ============ 13. CTA 通栏 ============ */
.cta-band{position:relative;background:var(--ink-deep);color:var(--cream);padding:72px 0;overflow:hidden;}
.cta-band::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--clay);}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;}
.cta-band h2{color:#FFFFFF;font-size:clamp(22px,2.6vw,32px);line-height:1.3;margin:0 0 10px;}
.cta-band p{color:#D9D3C6;font-size:15px;max-width:640px;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 14. 简版问答 ============ */
.mini-qa{
  margin-top:32px;display:grid;gap:1px;background:var(--line-2);
  border:1px solid var(--line-2);border-radius:18px;overflow:hidden;
}
.mini-qa li{background:var(--paper);padding:24px 26px;}
.mini-qa h3{font-size:16.5px;margin:0 0 6px;}
.mini-qa p{font-size:14.5px;color:var(--text-2);margin:0;line-height:1.8;}

/* ============ 15. 表单 ============ */
.form-shell{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start;margin-top:32px;}
.lead-form{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);padding:36px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px;font-weight:500;}
.form-control{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-input);
  border:1px solid var(--line);background:var(--paper-soft);font-size:15px;
  color:var(--text);transition:border-color .15s var(--ease),box-shadow .15s var(--ease),background .15s var(--ease);
}
.form-control::placeholder{color:var(--text-3);}
.form-control:focus{
  outline:none;border-color:var(--ink);background:#fff;
  box-shadow:0 0 0 3px rgba(20,52,43,.12);
}
textarea.form-control{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-check{display:flex;align-items:flex-start;gap:10px;margin:6px 0 20px;}
.form-check-input{
  width:16px;height:16px;flex:0 0 16px;margin-top:.42em;border-radius:4px;
  border:1px solid var(--line);background:var(--paper);appearance:none;
  display:grid;place-items:center;cursor:pointer;
}
.form-check-input:checked{background:var(--ink);border-color:var(--ink);}
.form-check-input:checked::after{content:"\2713";color:#fff;font-size:11px;line-height:1;}
.form-check-input:focus{outline:none;box-shadow:0 0 0 3px rgba(20,52,43,.12);}
.form-check label{font-size:13.5px;color:var(--text-2);line-height:1.7;}
.form-check a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}
.form-note{font-size:13px;color:var(--text-3);margin:16px 0 0;line-height:1.7;}
.form-side{background:var(--sand);border:1px solid var(--line);border-radius:18px;padding:24px;}
.form-side h3{font-size:16px;margin:0 0 12px;}
.form-side ul{display:grid;gap:10px;}
.form-side li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2);}
.form-side li::before{content:"";position:absolute;left:0;top:.68em;width:7px;height:7px;border-radius:2px;background:var(--clay);}

/* ============ 16. 页脚 ============ */
.site-foot{position:relative;margin-top:auto;background:var(--ink-deep);color:#D9D3C6;padding-top:64px;}
.site-foot::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--clay);}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.foot-brand .brand{padding:0 0 4px;}
.foot-brand .brand-text{color:var(--cream);}
.foot-brand .brand-mark{background:rgba(243,239,230,.12);color:var(--cream);}
.foot-desc{font-size:14px;line-height:1.8;color:#B9B2A4;margin:14px 0 16px;max-width:360px;}
.foot-contact{font-size:13.5px;color:#B9B2A4;margin:0 0 16px;line-height:1.9;}
.foot-contact strong{color:var(--cream);font-weight:600;}
.foot-qr{
  width:96px;height:96px;border:1px dashed rgba(243,239,230,.3);border-radius:12px;
  display:grid;place-items:center;text-align:center;font-size:12px;line-height:1.5;color:#8E8878;
}
.foot-col h4{font-size:14px;color:#FFFFFF;margin:0 0 16px;}
.foot-col ul{display:grid;gap:10px;}
.foot-col a{font-size:14px;color:#B9B2A4;}
.foot-col a:hover{color:var(--clay);text-decoration:underline;text-underline-offset:3px;}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  border-top:1px solid rgba(243,239,230,.12);padding:20px 0 28px;
  font-size:13px;color:#8E8878;
}

/* ============ 17. 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-in{opacity:1;transform:none;transition:opacity .4s var(--ease),transform .4s var(--ease);}

/* ============ 18. 响应式 ============ */
@media (min-width:992px) and (max-width:1199.98px){
  :root{--nav-w:76px;}
  .sidenav{padding:20px 12px;align-items:center;}
  .brand{padding:0 0 16px;justify-content:center;}
  .brand-text,.nav-label,.nav-link span,.side-card{display:none !important;}
  .nav-link{justify-content:center;padding:0;width:44px;}
  .nav-link::after{
    content:attr(data-tip);position:absolute;left:calc(100% + 12px);top:50%;
    transform:translateY(-50%) scale(.96);transform-origin:left center;
    background:var(--ink-deep);color:var(--cream);font-size:12px;white-space:nowrap;
    padding:6px 11px;border-radius:8px;opacity:0;pointer-events:none;
    transition:opacity .15s var(--ease),transform .15s var(--ease);
  }
  .nav-link:hover::after{opacity:1;transform:translateY(-50%) scale(1);}
}
@media (max-width:991.98px){
  :root{--nav-w:0px;}
  .sidenav{
    width:280px;transform:translateX(-100%);
    transition:transform .26s var(--ease);
    padding-top:22px;
  }
  .sidenav.open{transform:translateX(0);box-shadow:0 24px 60px -20px rgba(15,38,32,.5);}
  .app-main{margin-left:0;}
  .topbar{display:flex;}
  .two-col{grid-template-columns:1fr;gap:32px;}
  .toc{position:static;}
  .toc-list{grid-template-columns:repeat(2,minmax(0,1fr));}
  .form-shell{grid-template-columns:1fr;gap:28px;}
  .section{padding:72px 0;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .wrap{padding:0 20px;}
  .section{padding:56px 0;}
  .page-hero{padding:24px 0 48px;}
  .page-hero h1{font-size:clamp(28px,7vw,38px);}
  .note-card{padding:26px 22px;}
  .lead-form{padding:24px 20px;}
  .card-grid{grid-template-columns:1fr;}
  .hero-figure img{aspect-ratio:16/9;}
  .cta-band{padding:56px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .accordion-button{font-size:16px;padding:18px 42px 18px 0;}
  .accordion-body{padding:0 42px 20px 0;}
  .stage-list li{grid-template-columns:48px minmax(0,1fr);gap:12px;}
}
@media (max-width:575.98px){
  .toc-list{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;gap:6px;}
  .hero-tags{gap:8px;}
  .hero-tags li{font-size:12px;padding:6px 12px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}