/* roulang page: index */
:root{
  --ink:#16181A;
  --brand:#1E3A38;
  --accent:#E2571F;
  --muted:#8FA6A3;
  --paper:#F6F4EF;
  --warm:#EFE9DE;
  --line:#E3DED4;
  --deep:#12100E;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(18,16,14,.06);
  --shadow-md:0 12px 32px -12px rgba(18,16,14,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color 180ms var(--ease)}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;padding-left:24px;padding-right:24px}
@media (min-width:1600px){.container{max-width:1280px}}
@media (max-width:767px){.container{padding-left:20px;padding-right:20px}}

/* ============ 顶部细条 ============ */
.topbar{background:var(--brand);color:rgba(246,244,239,.78)}
.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-note{font-size:13px;line-height:1.6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-link{font-size:13px;color:var(--paper);border-bottom:1px solid rgba(246,244,239,.35);padding-bottom:1px;white-space:nowrap}
.topbar-link:hover{color:#F3A47A;border-color:#F3A47A}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:var(--paper);transition:box-shadow 220ms var(--ease),background 220ms var(--ease)}
.site-header.is-scrolled{background:rgba(246,244,239,.92);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.site-nav{padding:10px 0}
.site-nav .container{display:flex;align-items:center;gap:24px}
.site-logo{display:flex;align-items:center;gap:10px;padding:0;margin:0}
.logo-mark{width:34px;height:34px;border-radius:9px;background:var(--brand);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.logo-mark svg{width:19px;height:19px}
.logo-text{font-size:18px;font-weight:800;color:var(--brand);letter-spacing:.01em;white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link-item{position:relative;font-size:15px;font-weight:500;color:rgba(22,24,26,.85);padding:10px 12px;display:inline-block}
.nav-link-item::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform 180ms var(--ease)}
.nav-link-item:hover{color:var(--accent)}
.nav-link-item:hover::after{transform:scaleX(1)}
.nav-link-item.is-active{color:var(--accent)}
.nav-link-item.is-active::after{transform:scaleX(1)}
.nav-cta{margin-left:14px;display:inline-flex;align-items:center;gap:6px;background:var(--brand);color:var(--paper);font-size:15px;font-weight:600;border-radius:var(--radius-btn);padding:12px 22px;transition:background 180ms var(--ease),transform 180ms var(--ease)}
.nav-cta:hover{background:var(--accent);color:var(--paper);transform:translateY(-1px)}
.drawer-toggle{border:0;background:transparent;width:44px;height:44px;display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;margin-left:auto;padding:0}
.drawer-toggle span{display:block;width:22px;height:2px;background:var(--brand);border-radius:2px;transition:transform 200ms var(--ease),opacity 200ms var(--ease)}
.offcanvas{background:var(--paper);width:320px;border-left:1px solid var(--line)}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 22px}
.offcanvas-title{font-size:16px;font-weight:700;color:var(--brand)}
.offcanvas-body{padding:0}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{font-size:16px;font-weight:500;color:var(--ink);padding:0 22px;height:48px;display:flex;align-items:center;border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--accent)}
.drawer-nav a:hover{color:var(--accent);background:var(--warm)}
.drawer-cta-wrap{padding:20px 22px}
.drawer-cta{display:flex;align-items:center;justify-content:center;height:48px;border-radius:var(--radius-btn);background:var(--brand);color:var(--paper);font-weight:600;font-size:15px}
.drawer-cta:hover{background:var(--accent);color:var(--paper)}
@media (max-width:991.98px){
  .nav-main,.nav-cta{display:none}
  .drawer-toggle{display:flex}
  .logo-text{font-size:16px}
  .logo-mark{width:30px;height:30px}
  .site-nav{padding:8px 0}
}

/* ============ 通用板块 ============ */
.section{padding:108px 0}
.section-warm{background:var(--warm)}
.section-tight{padding-top:76px;padding-bottom:76px}
@media (max-width:991.98px){.section{padding:72px 0}.section-tight{padding-top:52px;padding-bottom:52px}}
@media (max-width:575.98px){.section{padding:56px 0}.section-tight{padding-top:40px;padding-bottom:40px}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;color:var(--brand);letter-spacing:.01em}
.section-lead{margin-top:14px;font-size:16px;color:rgba(22,24,26,.68);max-width:640px}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.08em;margin-bottom:14px}
.text-link{font-size:15px;font-weight:600;color:rgba(22,24,26,.8);border-bottom:1.5px solid rgba(22,24,26,.28);padding-bottom:2px;white-space:nowrap}
.text-link:hover{color:var(--accent);border-color:var(--accent)}
.text-link .arw{display:inline-block;transition:transform 180ms var(--ease)}
.text-link:hover .arw{transform:translateX(3px)}

/* ============ 按钮 ============ */
.btn-main,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;font-size:15px;font-weight:600;border-radius:var(--radius-btn);border:1px solid transparent;transition:all 180ms var(--ease);cursor:pointer}
.btn-main{background:var(--accent);color:var(--paper);box-shadow:var(--shadow-sm)}
.btn-main:hover{background:#C94815;color:var(--paper);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-main .arw{transition:transform 180ms var(--ease)}
.btn-main:hover .arw{transform:translateX(3px)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand);color:var(--paper);transform:translateY(-2px)}
.btn-lg-x{height:56px;padding:0 28px;font-size:16px}
.btn-sm-x{height:40px;padding:0 20px;font-size:15px}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:var(--deep)}
.hero-bg{position:absolute;inset:0;background-image:linear-gradient(112deg,rgba(18,16,14,.86) 0%,rgba(30,58,56,.92) 42%,rgba(30,58,56,.72) 72%,rgba(30,58,56,.55) 100%),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.99}
.hero-inner{position:relative;z-index:2;padding:104px 0 112px}
.hero-copy{color:var(--paper)}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#F3C6AC;background:rgba(226,87,31,.16);border:1px solid rgba(226,87,31,.4);border-radius:999px;padding:6px 14px;margin-bottom:22px}
.hero-title{font-size:clamp(30px,4.4vw,52px);line-height:1.18;font-weight:800;letter-spacing:.01em;color:#FBF9F5;max-width:15em}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:rgba(246,244,239,.82);max-width:32em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-trust{display:flex;flex-wrap:wrap;gap:0;margin-top:30px}
.hero-trust li{font-size:13px;color:rgba(246,244,239,.72);padding:0 14px;border-left:1px solid rgba(246,244,239,.24);line-height:1.4}
.hero-trust li:first-child{padding-left:0;border-left:0}
.hero-visual{display:flex;justify-content:flex-end}
.hero-shot{position:relative;width:100%;max-width:400px;border-radius:20px;overflow:hidden;border:1px solid rgba(246,244,239,.34);box-shadow:var(--shadow-md)}
.hero-shot img{width:100%;aspect-ratio:4/5;object-fit:cover;background:var(--warm);will-change:transform;transition:transform 600ms var(--ease)}
.hero-shot .shot-cap{position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:13px;color:rgba(246,244,239,.86);background:linear-gradient(180deg,rgba(18,16,14,0) 0%,rgba(18,16,14,.72) 100%)}
.hero-deco{position:absolute;right:-60px;bottom:-40px;width:460px;height:460px;border:1px solid rgba(246,244,239,.12);border-radius:50%;pointer-events:none}
@media (max-width:991.98px){
  .hero-inner{padding:72px 0 80px}
  .hero-visual{justify-content:flex-start;margin-top:8px}
  .hero-shot{max-width:100%}
  .hero-shot img{aspect-ratio:16/10}
}

/* ============ 卖点 1 + 2 ============ */
.points-box{border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;background:var(--paper)}
.point-lead{padding:16px 8px 16px 0}
.point-num{font-size:38px;font-weight:800;color:var(--accent);line-height:1;letter-spacing:-.02em}
.point-lead h3{font-size:20px;font-weight:600;color:var(--brand);margin-top:18px}
.point-lead p{margin-top:12px;color:rgba(22,24,26,.7);font-size:16px;max-width:26em}
.point-lead .text-link{display:inline-block;margin-top:18px}
.point-side{border-top:1px solid var(--line);padding:22px 4px}
.point-side:first-child{border-top:0}
.point-side h3{font-size:18px;font-weight:600;color:var(--brand)}
.point-side p{margin-top:10px;color:rgba(22,24,26,.68);font-size:15px;max-width:34em}
.point-side .text-link{display:inline-block;margin-top:12px}
@media (max-width:991.98px){
  .points-box{padding:20px}
  .point-lead{padding:8px 0}
  .point-num{font-size:32px}
  .point-lead h3{margin-top:12px}
}
@media (min-width:992px){
  .points-box .row{--bs-gutter-x:32px}
  .points-split{border-left:1px solid var(--line);padding-left:32px}
}

/* ============ 步骤条 ============ */
.steps{position:relative;padding-left:4px}
.step{position:relative;padding:0 0 34px 34px}
.step::before{content:"";position:absolute;left:11px;top:26px;bottom:0;width:1px;background:var(--line)}
.step:last-child::before{display:none}
.step:last-child{padding-bottom:0}
.step-node{position:absolute;left:0;top:4px;width:23px;height:23px;border-radius:50%;border:1px solid var(--line);background:var(--paper);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;color:var(--muted)}
.step.is-current .step-node{border-color:var(--accent);color:var(--accent);background:#FDF1EA}
.step.is-current::before{background:var(--accent)}
.step h3{font-size:18px;font-weight:600;color:var(--brand)}
.step p{margin-top:8px;font-size:15px;color:rgba(22,24,26,.68);max-width:36em}
.demo-figure{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);background:var(--paper)}
.demo-figure img{width:100%;aspect-ratio:16/11;object-fit:cover}
.demo-cap{margin-top:14px;font-size:13px;color:var(--muted);text-align:center;line-height:1.7}

/* ============ 内容卡片 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
@media (max-width:991.98px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}}
@media (max-width:767.98px){.card-grid{grid-template-columns:1fr}}
.post-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;background:var(--paper);transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease)}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:#D6CFC1}
.post-thumb{border-radius:var(--radius-img);overflow:hidden;background:var(--warm)}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 300ms var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.badge-cat{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:rgba(143,166,163,.22);color:rgba(22,24,26,.7);font-size:12px;font-weight:600;margin-top:16px;align-self:flex-start}
.post-card h3{margin-top:12px;font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color 180ms var(--ease)}
.post-card:hover h3{color:var(--accent)}
.post-card p.excerpt{margin-top:10px;font-size:15px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}
.post-foot .arw{transition:transform 180ms var(--ease);color:var(--accent)}
.post-card:hover .post-foot .arw{transform:translateX(3px)}
.empty-state{border:1px dashed #CFC8BA;border-radius:var(--radius-card);padding:48px 24px;text-align:center;background:transparent}
.empty-state p{font-size:15px;color:var(--muted)}
.empty-state .btn-ghost{margin-top:20px}

/* ============ 社会认同 ============ */
.stat-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat-cell{padding:34px 24px;border-left:1px solid var(--line)}
.stat-cell:first-child{border-left:0}
.stat-num{font-size:38px;font-weight:800;color:var(--brand);line-height:1;letter-spacing:-.02em}
.stat-num small{font-size:16px;font-weight:700;margin-left:2px}
.stat-label{margin-top:12px;font-size:13px;color:var(--muted)}
.mark-row{display:flex;flex-wrap:wrap;gap:32px;margin-top:40px;align-items:center}
.mark-item{font-size:14px;font-weight:600;color:var(--brand);opacity:.55;letter-spacing:.04em;transition:opacity 180ms var(--ease)}
.mark-item:hover{opacity:1}
.quote-col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;margin-top:56px}
.quote-card{border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;background:var(--paper);position:relative}
.quote-offset{margin-top:24px}
.quote-mark{font-size:44px;line-height:1;color:var(--accent);font-weight:800;font-family:Georgia,serif}
.quote-card p{margin-top:10px;font-size:16px;color:rgba(22,24,26,.78);line-height:1.8}
.quote-meta{margin-top:18px;font-size:13px;color:var(--muted)}
@media (max-width:991.98px){
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-cell:nth-child(3){border-left:0}
  .stat-cell:nth-child(n+3){border-top:1px solid var(--line)}
  .quote-col{grid-template-columns:1fr}
  .quote-offset{margin-top:0}
}
@media (max-width:575.98px){
  .stat-num{font-size:30px}
  .stat-cell{padding:24px 16px}
}

/* ============ FAQ ============ */
.faq-side h2{font-size:clamp(24px,3vw,34px);font-weight:700;color:var(--brand);line-height:1.3}
.faq-side p{margin-top:16px;font-size:15px;color:rgba(22,24,26,.66);max-width:24em}
.faq-list .accordion-item{border:0;border-top:1px solid var(--line);background:transparent;border-radius:0}
.faq-list .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq-list .accordion-button{background:transparent;border:0;box-shadow:none;padding:22px 46px 22px 0;font-size:17px;font-weight:600;color:var(--ink);font-family:var(--font-cn);line-height:1.6}
.faq-list .accordion-button:not(.collapsed){color:var(--brand)}
.faq-list .accordion-button::after{display:none}
.faq-list .accordion-button::before{content:"";position:absolute;right:14px;top:50%;width:14px;height:1.5px;background:var(--brand);transform:translateY(-50%);transition:transform 220ms var(--ease),background 220ms var(--ease)}
.faq-list .accordion-button::after{content:"";position:absolute;right:20px;top:50%;width:1.5px;height:14px;background:var(--brand);transform:translateY(-50%);transition:transform 220ms var(--ease),background 220ms var(--ease);display:block;margin:0;background-image:none}
.faq-list .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(90deg);opacity:0}
.faq-list .accordion-button:not(.collapsed)::before{background:var(--accent)}
.faq-list .accordion-button:hover{color:var(--accent)}
.faq-list .accordion-body{padding:0 46px 24px 0;font-size:16px;line-height:1.85;color:rgba(22,24,26,.74)}

/* ============ 底部转化区 ============ */
.cta-band{background:var(--deep);color:var(--paper)}
.cta-band .inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;padding:88px 0}
.cta-band h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;color:#FBF9F5;max-width:20em}
.cta-band p{margin-top:14px;font-size:16px;color:rgba(246,244,239,.7);max-width:34em}
@media (max-width:991.98px){.cta-band .inner{padding:64px 0}}
@media (max-width:575.98px){.cta-band .inner{padding:52px 0}}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);color:rgba(246,244,239,.72);padding-top:76px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .logo-mark{background:#22322F}
.footer-brand .logo-text{color:#FBF9F5}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;max-width:26em;color:rgba(246,244,239,.6)}
.footer-title{font-size:14px;font-weight:700;color:#FBF9F5;margin-bottom:18px;letter-spacing:.04em}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:rgba(246,244,239,.68)}
.footer-links a:hover{color:var(--accent)}
.footer-form label{display:block;font-size:13px;color:rgba(246,244,239,.62);margin-bottom:8px}
.footer-form .field{display:flex;gap:10px;flex-wrap:wrap}
.footer-form input{flex:1 1 160px;height:48px;border-radius:var(--radius-btn);border:1px solid rgba(246,244,239,.24);background:rgba(246,244,239,.06);color:#FBF9F5;padding:0 14px;font-size:15px}
.footer-form input::placeholder{color:rgba(246,244,239,.4)}
.footer-form input:focus{outline:none;border-color:#7FB0AA;box-shadow:0 0 0 2px rgba(226,87,31,.35)}
.footer-form button{height:48px;padding:0 20px;border:0;border-radius:var(--radius-btn);background:var(--accent);color:#FBF9F5;font-size:15px;font-weight:600;cursor:pointer;transition:background 180ms var(--ease)}
.footer-form button:hover{background:#C94815}
.footer-hint{margin-top:12px;font-size:13px;color:rgba(246,244,239,.45)}
.footer-contact{margin-top:22px;font-size:14px;color:rgba(246,244,239,.6)}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(246,244,239,.14);padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(246,244,239,.5)}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding-top:56px}
}

/* ============ 悬浮转化条 ============ */
.float-bar{position:fixed;z-index:1040;opacity:0;pointer-events:none;transition:opacity 300ms var(--ease),transform 300ms var(--ease)}
.float-pill{right:28px;bottom:28px;display:flex;align-items:center;gap:18px;background:var(--brand);color:var(--paper);border-radius:999px;padding:12px 20px;box-shadow:var(--shadow-md);transform:translateY(10px)}
.float-pill .pill-text{font-size:14px;color:rgba(246,244,239,.86)}
.float-pill .pill-btn{display:inline-flex;align-items:center;gap:6px;background:var(--accent);color:var(--paper);font-size:14px;font-weight:600;border-radius:999px;padding:8px 16px}
.float-pill .pill-btn:hover{color:var(--paper);background:#C94815}
.float-strip{left:0;right:0;bottom:0;height:56px;background:var(--brand);color:var(--paper);display:none;align-items:center;justify-content:space-between;gap:12px;padding:0 20px calc(0px + env(safe-area-inset-bottom)) 20px;transform:translateY(100%)}
.float-strip .strip-text{font-size:14px;color:rgba(246,244,239,.86);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.float-strip .strip-btn{background:var(--accent);color:var(--paper);font-size:14px;font-weight:600;border-radius:var(--radius-btn);padding:9px 16px;white-space:nowrap}
.float-bar.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.float-pill.is-visible .pill-text{transform:none}
@media (min-width:992px){
  .float-strip{display:none !important}
}
@media (max-width:991.98px){
  .float-pill{display:none}
  .float-strip{display:flex}
  body{padding-bottom:56px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .float-bar{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#16181A;
  --brand:#1E3A38;
  --accent:#E2571F;
  --muted:#8FA6A3;
  --paper:#F6F4EF;
  --warm:#EFE9DE;
  --line:#E3DED4;
  --deep:#12100E;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(18,16,14,.06);
  --shadow-md:0 12px 32px -12px rgba(18,16,14,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover;background:var(--paper);}
a{color:var(--ink);text-decoration:none;transition:color 180ms var(--ease);}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{letter-spacing:.01em;color:var(--brand);margin:0;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){.container{padding:0 24px;}}
@media (min-width:1200px){.container{padding:0 32px;}}
@media (min-width:1600px){.container{max-width:1280px;}}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.btn i{transition:transform 180ms var(--ease);}
.btn:hover i{transform:translateX(3px);}
.btn-primary{background:var(--accent);color:var(--paper);}
.btn-primary:hover{background:#c8481a;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-secondary{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-secondary:hover{background:var(--brand);color:var(--paper);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 20px;font-size:15px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1.5px solid var(--line);
  padding-bottom:2px;
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.text-link:hover{color:var(--accent);border-color:var(--accent);}
.text-link i{transition:transform 180ms var(--ease);}
.text-link:hover i{transform:translateX(3px);}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  background:rgba(143,166,163,.18);
  color:rgba(22,24,26,.72);
  letter-spacing:.02em;
}
.badge-accent{background:rgba(226,87,31,.12);color:var(--accent);}
.section{padding:72px 0;}
@media (min-width:768px){.section{padding:88px 0;}}
@media (min-width:1200px){.section{padding:110px 0;}}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;}
.section-head p{margin-top:10px;color:rgba(22,24,26,.62);max-width:640px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  background:rgba(246,244,239,.96);
  transition:box-shadow 220ms var(--ease),border-color 220ms var(--ease),background-color 220ms var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  border-bottom:1px solid var(--line);
  background:rgba(246,244,239,.88);
  backdrop-filter:saturate(150%) blur(10px);
  box-shadow:var(--shadow-sm);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:72px;
}
.site-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;
  background:var(--brand);
  flex:0 0 auto;
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{
  font-size:17px;
  font-weight:800;
  color:var(--brand);
  letter-spacing:.01em;
  white-space:nowrap;
}
.main-nav{display:none;}
.main-nav ul{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:rgba(22,24,26,.85);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;bottom:-2px;
  width:0;height:2px;
  background:var(--accent);
  transition:width 180ms var(--ease);
}
.main-nav a:hover{color:var(--accent);}
.main-nav a:hover::after{width:100%;}
.main-nav a.is-active{color:var(--accent);}
.main-nav a.is-active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-actions .btn{display:none;}
.nav-toggle{
  width:44px;height:44px;
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:5px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:transform 220ms var(--ease),opacity 220ms var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
@media (min-width:992px){
  .main-nav{display:block;}
  .nav-actions .btn{display:inline-flex;}
  .nav-toggle{display:none;}
}

/* ---------- 移动抽屉 ---------- */
.drawer-backdrop{
  position:fixed;
  inset:0;
  background:rgba(18,16,14,.44);
  opacity:0;
  pointer-events:none;
  transition:opacity 220ms var(--ease);
  z-index:1040;
}
.drawer-backdrop.is-open{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;
  top:0;right:0;
  height:100%;
  width:min(86vw,340px);
  background:var(--paper);
  z-index:1050;
  transform:translateX(100%);
  transition:transform 260ms var(--ease);
  display:flex;
  flex-direction:column;
  padding:20px;
  box-shadow:var(--shadow-md);
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-close{
  width:40px;height:40px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:transparent;
  color:var(--brand);
  cursor:pointer;
}
.mobile-drawer nav ul li{border-bottom:1px solid var(--line);}
.mobile-drawer nav ul li:first-child{border-top:1px solid var(--line);}
.mobile-drawer nav a{
  display:flex;
  align-items:center;
  height:48px;
  font-size:16px;
  font-weight:500;
  color:rgba(22,24,26,.88);
}
.mobile-drawer nav a.is-active{color:var(--accent);}
.drawer-cta{margin-top:24px;}
body.is-locked{overflow:hidden;}

/* ---------- 面包屑 ---------- */
.crumbs{
  padding:104px 0 0;
  font-size:13px;
  color:rgba(22,24,26,.6);
}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"/";color:var(--muted);}
.crumbs a{color:rgba(22,24,26,.6);}
.crumbs a:hover{color:var(--accent);}
.crumbs .current{color:rgba(22,24,26,.72);}

/* ---------- 文章头 ---------- */
.article-head{padding:24px 0 32px;border-bottom:1px solid var(--line);}
.article-head h1{
  font-size:clamp(26px,2.9vw,38px);
  line-height:1.3;
  font-weight:700;
  margin:16px 0 18px;
  max-width:20em;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:rgba(22,24,26,.6);
}
.article-meta .dot{color:var(--muted);}
.article-meta .share{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
}
.article-meta .share button{
  width:34px;height:34px;
  border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--brand);
  cursor:pointer;
  transition:border-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease);
}
.article-meta .share button:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:1fr;
  gap:48px;
  padding:40px 0 8px;
}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:56px;padding-top:56px;}
}
.article-body{
  max-width:780px;
  font-size:17px;
  line-height:1.9;
  color:rgba(22,24,26,.9);
}
@media (min-width:1200px){.article-body{max-width:none;}}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;
  padding-left:14px;
  font-size:clamp(21px,2.2vw,24px);
  line-height:1.4;
  font-weight:700;
  margin:40px 0 16px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.42em;
  width:3px;height:20px;
  background:var(--accent);
  border-radius:2px;
}
.article-body h3{font-size:19px;font-weight:600;margin:28px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:4px;}
.article-body ul li,.article-body ol li{
  position:relative;
  padding-left:20px;
  margin-bottom:8px;
  line-height:1.85;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:2px;top:.72em;
  width:6px;height:6px;
  background:var(--accent);
  border-radius:1px;
}
.article-body ol{counter-reset:item;}
.article-body ol li::before{
  counter-increment:item;
  content:counter(item);
  position:absolute;
  left:0;top:0;
  color:var(--accent);
  font-weight:700;
  font-size:15px;
}
.article-body blockquote{
  margin:24px 0;
  padding:12px 8px 12px 18px;
  border-left:3px solid var(--brand);
  background:var(--warm);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:rgba(22,24,26,.82);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius-img);margin:20px 0 8px;width:100%;}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  font-size:13px;
  color:var(--muted);
  text-align:center;
  margin-top:8px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:var(--radius-img);
  overflow:hidden;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:12px 14px;
  text-align:left;
  vertical-align:top;
}
.article-body th{background:var(--warm);font-weight:600;color:var(--brand);}
.article-body pre{
  background:var(--deep);
  color:#EDEAE3;
  border-radius:var(--radius-btn);
  padding:18px 20px;
  overflow-x:auto;
  font-size:14px;
  line-height:1.7;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  margin:24px 0;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;
}
.article-body p code,.article-body li code{
  background:var(--warm);
  padding:2px 6px;
  border-radius:6px;
}
.article-body a{color:var(--brand);border-bottom:1.5px solid rgba(30,58,56,.28);}
.article-body a:hover{color:var(--accent);border-color:var(--accent);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

/* ---------- 空态 ---------- */
.article-empty{
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  padding:48px 24px;
  text-align:center;
  color:var(--muted);
  background:var(--paper);
}
.article-empty p{font-size:15px;margin-bottom:18px;}

/* ---------- 侧栏 ---------- */
.sidebar{display:flex;flex-direction:column;gap:28px;}
.side-card{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
  background:var(--paper);
}
.side-card h2,.side-card h3{
  font-size:15px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--brand);
  margin-bottom:14px;
}
.toc-list li{border-top:1px solid var(--line);}
.toc-list li:first-child{border-top:0;}
.toc-list a{
  display:block;
  padding:10px 0 10px 12px;
  font-size:15px;
  color:rgba(22,24,26,.76);
  border-left:2px solid transparent;
  transition:color 180ms var(--ease),border-color 180ms var(--ease),padding-left 180ms var(--ease);
}
.toc-list a:hover,.toc-list a.is-active{
  color:var(--accent);
  border-left-color:var(--accent);
  padding-left:16px;
}
.hot-list li{margin-bottom:12px;}
.hot-list li:last-child{margin-bottom:0;}
.hot-list a{
  display:flex;
  gap:10px;
  font-size:15px;
  line-height:1.6;
  color:rgba(22,24,26,.82);
}
.hot-list a:hover{color:var(--accent);}
.hot-list .num{
  flex:0 0 auto;
  font-weight:800;
  color:var(--muted);
  font-size:14px;
  letter-spacing:-.01em;
}
.hot-list a:hover .num{color:var(--accent);}
.side-note{
  font-size:13px;
  color:var(--muted);
  line-height:1.7;
  margin:0;
}

/* ---------- 文末 ---------- */
.tags-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:40px 0 0;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.tag-chip{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:13px;
  color:rgba(22,24,26,.72);
  transition:border-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease);
}
.tag-chip:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.pager{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  margin-top:28px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
@media (min-width:768px){.pager{grid-template-columns:1fr 1fr;}}
.pager-item{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:16px 18px;
  transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.pager-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand);}
.pager-item .label{font-size:13px;color:var(--muted);display:block;margin-bottom:6px;}
.pager-item strong{font-size:15px;font-weight:600;color:var(--brand);display:block;line-height:1.6;}
.pager-item.next{text-align:right;}
.back-row{margin-top:28px;}

/* ---------- 相关推荐 ---------- */
.related{padding:56px 0 0;}
.related-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
@media (min-width:768px){.related-grid{grid-template-columns:repeat(3,1fr);}}
.related-card{
  display:flex;
  gap:14px;
  align-items:center;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:14px;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand);}
.related-card img{
  width:96px;height:72px;
  border-radius:10px;
  flex:0 0 auto;
}
.related-card h3{font-size:15px;font-weight:600;line-height:1.55;margin-bottom:6px;}
.related-card span{font-size:13px;color:var(--muted);}

/* ---------- 深色 CTA ---------- */
.cta-band{
  background:var(--deep);
  color:var(--paper);
  padding:72px 0;
  margin-top:72px;
}
.cta-band h2{color:var(--paper);font-size:clamp(22px,2.6vw,32px);line-height:1.35;}
.cta-band p{color:rgba(246,244,239,.72);margin:14px 0 26px;max-width:520px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--deep);
  color:rgba(246,244,239,.78);
  padding:64px 0 0;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  padding-bottom:48px;
}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand .site-logo{margin-bottom:16px;}
.footer-brand .logo-text{color:var(--paper);}
.footer-brand p{color:rgba(246,244,239,.66);line-height:1.8;max-width:340px;}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:var(--paper);
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:rgba(246,244,239,.72);font-size:14px;}
.footer-links a:hover{color:var(--accent);}
.footer-form label{
  display:block;
  font-size:13px;
  color:rgba(246,244,239,.66);
  margin-bottom:10px;
}
.footer-form .field{display:flex;gap:10px;flex-wrap:wrap;}
.footer-form input{
  flex:1 1 160px;
  height:48px;
  padding:0 14px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(246,244,239,.24);
  background:rgba(246,244,239,.06);
  color:var(--paper);
  font-size:14px;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.footer-form input::placeholder{color:rgba(246,244,239,.42);}
.footer-form input:focus{
  outline:none;
  border-color:var(--paper);
  box-shadow:0 0 0 2px rgba(226,87,31,.45);
}
.footer-form button{
  height:48px;
  padding:0 20px;
  border:0;
  border-radius:var(--radius-btn);
  background:var(--accent);
  color:var(--paper);
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:background-color 180ms var(--ease),transform 180ms var(--ease);
}
.footer-form button:hover{background:#c8481a;transform:translateY(-1px);}
.footer-hint{font-size:13px;color:rgba(246,244,239,.52);margin:12px 0 0;}
.footer-contact{font-size:13px;color:rgba(246,244,239,.62);margin-top:14px;line-height:1.7;}
.footer-bottom{
  border-top:1px solid rgba(246,244,239,.14);
  padding:20px 0 28px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(246,244,239,.56);
}

/* ---------- 底部固定转化条（文章页默认隐藏：把 .float-cta 的 display 改为 flex 即可开启） ---------- */
.float-cta{display:none;}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --ink:#16181A;
  --brand:#1E3A38;
  --accent:#E2571F;
  --accent-deep:#C4460F;
  --muted:#8FA6A3;
  --paper:#F6F4EF;
  --warm:#EFE9DE;
  --line:#E3DED4;
  --deep:#12100E;
  --r-card:16px;
  --r-btn:10px;
  --r-img:16px;
  --sh-sm:0 1px 2px rgba(18,16,14,.06);
  --sh-md:0 12px 32px -12px rgba(18,16,14,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:100px}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--font-cn);font-size:16.5px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color 180ms var(--ease)}
button{font-family:inherit}
ul{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
h1,h2,h3{margin:0;font-weight:700;letter-spacing:.01em}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:576px){.container{padding:0 24px}}
@media (min-width:992px){.container{padding:0 32px}}
@media (min-width:1600px){.container{max-width:1280px}}

/* ===== 按钮 ===== */
.btn-main,.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease);
}
.btn-main{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-main:hover{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff;transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-outline:hover{background:var(--brand);border-color:var(--brand);color:var(--paper);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-lg{height:56px;padding:0 28px;font-size:16px}
.btn-block{width:100%}
.btn-main .arw,.btn-outline .arw,.text-link .arw{display:inline-block;transition:transform 180ms var(--ease)}
.btn-main:hover .arw,.btn-outline:hover .arw,.text-link:hover .arw{transform:translateX(3px)}

.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:rgba(22,24,26,.82);padding-bottom:2px;
  border-bottom:1.5px solid rgba(22,24,26,.35);
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.text-link:hover{color:var(--accent);border-color:var(--accent)}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:1030;background:var(--paper);
  transition:background-color 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(246,244,239,.93);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.site-logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;color:var(--brand);flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:17px;letter-spacing:.01em;white-space:nowrap}
.main-nav{margin-left:auto}
.main-nav ul{display:flex;align-items:center;gap:30px}
.main-nav a{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:rgba(22,24,26,.85)}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:-8px;height:2px;width:100%;
  background:var(--accent);transform:scaleX(0);transform-origin:left center;
  transition:transform 180ms var(--ease);
}
.main-nav a:hover{color:var(--accent)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--accent)}
.main-nav a.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:transparent;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
  transition:border-color 180ms var(--ease);
}
.nav-toggle:hover{border-color:var(--brand)}
.nav-toggle span{display:block;width:18px;height:1.8px;background:var(--brand);border-radius:2px}

/* ===== 移动抽屉 ===== */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(18,16,14,.42);z-index:1050;
  opacity:0;visibility:hidden;transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);z-index:1060;
  background:var(--paper);box-shadow:var(--sh-md);padding:20px 20px 28px;
  display:flex;flex-direction:column;overflow-y:auto;
  transform:translateX(102%);transition:transform 320ms var(--ease);
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:15px;font-weight:700;color:var(--brand)}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:transparent;
  color:var(--brand);font-size:20px;line-height:1;cursor:pointer;transition:border-color 180ms var(--ease);
}
.drawer-close:hover{border-color:var(--accent);color:var(--accent)}
.drawer-nav{margin-top:8px;flex:1 1 auto}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;font-size:16px;color:var(--ink);
  border-bottom:1px solid var(--line);transition:color 180ms var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--accent)}
.drawer-cta{margin-top:22px}
body.drawer-open{overflow:hidden}

/* ===== 面包屑 ===== */
.crumb{padding:22px 0 0;font-size:13px;color:rgba(22,24,26,.6)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:rgba(22,24,26,.35)}
.crumb a:hover{color:var(--accent)}
.crumb .cur{color:rgba(22,24,26,.85)}

/* ===== 页头 ===== */
.page-head{position:relative;padding:44px 0 56px;overflow:hidden}
.page-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120% 92% at 86% 8%,rgba(30,58,56,.075),transparent 62%);
}
.page-head-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  letter-spacing:.06em;color:var(--brand);background:rgba(30,58,56,.07);
  border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.page-head h1{font-size:clamp(30px,4.4vw,50px);line-height:1.18;font-weight:800;color:var(--brand);margin-bottom:18px}
.page-head .lead{font-size:17px;line-height:1.9;color:rgba(22,24,26,.74);max-width:38em;margin-bottom:26px}
.head-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.head-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;font-size:13px;color:var(--muted)}
.head-meta span{display:inline-flex;align-items:center;gap:8px}
.head-meta span+span::before{content:"";width:1px;height:12px;background:var(--line);display:inline-block}
.head-media{position:relative}
.head-media img{width:100%;aspect-ratio:4/3;border-radius:20px;border:1px solid var(--line);box-shadow:var(--sh-sm)}
.head-media figcaption{margin-top:12px;font-size:13px;color:var(--muted);text-align:center}
.reveal{animation:rise 620ms var(--ease) both}
.d1{animation-delay:.04s}
.d2{animation-delay:.12s}
.d3{animation-delay:.2s}
.d4{animation-delay:.28s}
@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ===== 锚点导航 ===== */
.anchor-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(239,233,222,.42)}
.anchor-inner{display:flex;flex-wrap:wrap;gap:10px;padding:16px 0}
.anchor-inner a{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:var(--paper);
  font-size:14px;font-weight:500;color:rgba(22,24,26,.76);
  transition:border-color 180ms var(--ease),color 180ms var(--ease),background-color 180ms var(--ease);
}
.anchor-inner a:hover{border-color:var(--brand);color:var(--brand)}
.anchor-inner a.is-active{background:var(--brand);border-color:var(--brand);color:var(--paper)}

/* ===== 交替图文流 ===== */
.flow-section{padding:8px 0 8px}
.flow-item{
  display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;
  padding:56px 0;border-bottom:1px solid var(--line);
}
.flow-item:first-child{border-top:1px solid var(--line)}
.flow-item.rev{grid-template-columns:7fr 5fr}
.flow-item.rev .flow-media{order:2}
.flow-media img{width:100%;aspect-ratio:4/3;border-radius:var(--r-img);border:1px solid var(--line)}
.flow-index{
  font-family:Inter,system-ui,sans-serif;font-size:34px;font-weight:800;line-height:1;
  color:var(--accent);letter-spacing:-.01em;display:block;margin-bottom:14px;
}
.flow-body h2{font-size:clamp(24px,3vw,32px);line-height:1.3;color:var(--brand);margin-bottom:14px}
.flow-body p{font-size:16.5px;line-height:1.85;color:rgba(22,24,26,.74);max-width:34em;margin-bottom:12px}
.flow-points{margin:0 0 20px}
.flow-points li{position:relative;padding-left:18px;font-size:15px;color:rgba(22,24,26,.7);line-height:1.85}
.flow-points li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:1.5px;background:var(--accent);
}

/* ===== FAQ ===== */
.faq-section{padding:88px 0 0}
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-intro h2{font-size:clamp(24px,3vw,32px);line-height:1.3;color:var(--brand);margin-bottom:14px}
.faq-intro p{font-size:15px;line-height:1.85;color:rgba(22,24,26,.68);max-width:24em}
.faq-accordion .accordion-item{border:0;border-top:1px solid var(--line);background:transparent;border-radius:0}
.faq-accordion .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq-accordion .accordion-button{
  background:transparent;box-shadow:none;border-radius:0;padding:22px 0;
  font-size:17px;font-weight:600;color:var(--ink);gap:20px;align-items:center;
  transition:color 220ms var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--accent);outline-offset:2px}
.faq-accordion .accordion-button::after{display:none}
.faq-accordion .accordion-body{
  padding:0 0 24px;font-size:16px;line-height:1.85;color:rgba(22,24,26,.72);max-width:64ch;
}
.acc-icon{position:relative;width:16px;height:16px;flex:0 0 auto;margin-left:auto}
.acc-icon::before{content:"";position:absolute;left:0;top:50%;width:16px;height:1.5px;background:currentColor;transform:translateY(-50%)}
.acc-icon::after{
  content:"";position:absolute;left:50%;top:50%;width:1.5px;height:16px;background:currentColor;
  transform:translate(-50%,-50%);transition:height 220ms var(--ease),opacity 220ms var(--ease);
}
.accordion-button:not(.collapsed) .acc-icon::after{height:0;opacity:0}

/* ===== 底部 CTA 条 ===== */
.cta-section{padding:88px 0 0}
.cta-box{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--paper);
  padding:44px 48px;display:grid;grid-template-columns:8fr 4fr;gap:40px;align-items:center;
}
.cta-box h2{font-size:clamp(24px,3vw,32px);line-height:1.3;color:var(--brand);margin-bottom:12px}
.cta-box p{font-size:16px;line-height:1.85;color:rgba(22,24,26,.72);max-width:32em;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ===== 页脚 ===== */
.site-footer{background:var(--deep);color:rgba(246,244,239,.78);margin-top:96px;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.5fr;gap:40px}
.footer-brand .site-logo{color:var(--paper);margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(246,244,239,.62);max-width:30em}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.06em;color:rgba(246,244,239,.55);margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:rgba(246,244,239,.78)}
.footer-links a:hover{color:var(--accent)}
.footer-form label{display:block;font-size:13px;color:rgba(246,244,239,.62);margin-bottom:8px}
.footer-form .field{display:flex;gap:10px;flex-wrap:wrap}
.footer-form input{
  flex:1 1 150px;height:48px;padding:0 14px;border-radius:10px;
  border:1px solid rgba(246,244,239,.22);background:rgba(246,244,239,.06);color:var(--paper);
  font-size:14px;font-family:inherit;transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.footer-form input::placeholder{color:rgba(246,244,239,.4)}
.footer-form input:focus{outline:none;border-color:var(--muted);box-shadow:0 0 0 2px rgba(226,87,31,.28)}
.footer-form button{
  height:48px;padding:0 20px;border-radius:10px;border:1px solid var(--accent);
  background:var(--accent);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:background-color 180ms var(--ease),border-color 180ms var(--ease);
}
.footer-form button:hover{background:var(--accent-deep);border-color:var(--accent-deep)}
.footer-hint{font-size:13px;color:rgba(246,244,239,.5);margin:10px 0 0}
.footer-contact{margin-top:16px;font-size:13px;color:rgba(246,244,239,.55);line-height:1.7}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(246,244,239,.14);
  font-size:13px;color:rgba(246,244,239,.5);
}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
  .page-head-inner{gap:40px}
  .flow-item,.flow-item.rev{grid-template-columns:6fr 6fr;gap:36px}
}
@media (max-width:991.98px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-main.btn-sm{display:none}
  .header-inner{min-height:64px;gap:16px}
  .logo-mark{width:30px;height:30px;border-radius:9px}
  .logo-text{font-size:15.5px}
  .page-head{padding:32px 0 44px}
  .page-head-inner{grid-template-columns:1fr;gap:32px}
  .head-media img{aspect-ratio:16/9;border-radius:16px}
  .flow-item,.flow-item.rev{grid-template-columns:1fr;gap:24px;padding:44px 0}
  .flow-item.rev .flow-media{order:0}
  .flow-media img{aspect-ratio:16/9}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .faq-section,.cta-section{padding-top:64px}
  .cta-box{grid-template-columns:1fr;gap:26px;padding:32px 28px}
  .cta-actions{justify-content:flex-start}
  .site-footer{margin-top:72px;padding:56px 0 24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:575.98px){
  body{font-size:16px}
  .page-head h1{font-size:29px}
  .page-head .lead{font-size:16px}
  .head-actions{gap:10px}
  .head-actions .btn-main,.head-actions .btn-outline{width:100%}
  .head-meta{gap:8px}
  .head-meta span+span::before{display:none}
  .head-meta span{width:100%}
  .flow-body h2{font-size:23px}
  .flow-index{font-size:28px}
  .cta-box{padding:26px 20px}
  .cta-actions .btn-main,.cta-actions .btn-outline{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{justify-content:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --ink:#16181A;
  --brand:#1E3A38;
  --accent:#E2571F;
  --muted:#8FA6A3;
  --paper:#F6F4EF;
  --warm:#EFE9DE;
  --line:#E3DED4;
  --deep:#12100E;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --sh-sm:0 1px 2px rgba(18,16,14,.06);
  --sh-md:0 12px 32px -12px rgba(18,16,14,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--font-cn);font-size:16.5px;line-height:1.85;letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
input{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:var(--paper);padding:10px 16px;border-radius:0 0 10px 0;z-index:99}
.skip-link:focus{left:0}

/* 容器 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media(min-width:1600px){.container{max-width:1280px}}
@media(max-width:575.98px){.container{padding:0 20px}}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:50;background:var(--paper);border-bottom:1px solid transparent;transition:background .18s var(--ease),border-color .18s var(--ease)}
.site-header.is-scrolled{background:rgba(246,244,239,.86);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom-color:var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.site-logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--brand);letter-spacing:.01em}
.logo-mark{width:32px;height:32px;border-radius:9px;background:var(--brand);display:inline-flex;align-items:center;justify-content:center;flex:none}
.logo-mark svg{width:19px;height:19px;display:block}
.primary-nav{display:flex;align-items:center;gap:28px}
.nav-list{display:flex;align-items:center;gap:26px}
.nav-link{position:relative;display:inline-block;font-size:15px;font-weight:500;color:rgba(22,24,26,.85);padding:6px 0;transition:color .18s var(--ease)}
.nav-link::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--accent);transition:width .18s var(--ease)}
.nav-link:hover{color:var(--accent)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--accent)}
.nav-link.active::after{width:100%}
.nav-cta{display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 20px;border-radius:var(--r-btn);background:var(--brand);border:1px solid var(--brand);color:var(--paper);font-size:15px;font-weight:600;transition:background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease)}
.nav-cta:hover{background:var(--accent);border-color:var(--accent);transform:translateY(-1px)}
.nav-toggle{display:none}

/* 按钮与文字链 */
.btn-main{display:inline-flex;align-items:center;gap:10px;height:48px;padding:0 24px;border-radius:var(--r-btn);background:var(--accent);border:1px solid var(--accent);color:#fff;font-size:15px;font-weight:600;transition:background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease)}
.btn-main:hover{background:#c94715;border-color:#c94715;transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn-main .arrow{transition:transform .18s var(--ease)}
.btn-main:hover .arrow{transform:translateX(3px)}
.btn-ghost{display:inline-flex;align-items:center;gap:10px;height:48px;padding:0 24px;border-radius:var(--r-btn);background:transparent;border:1px solid var(--brand);color:var(--brand);font-size:15px;font-weight:600;transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease)}
.btn-ghost:hover{background:var(--brand);color:var(--paper);transform:translateY(-2px)}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:rgba(22,24,26,.8);padding-bottom:2px;border-bottom:1.5px solid rgba(22,24,26,.35);transition:color .18s var(--ease),border-color .18s var(--ease)}
.link-arrow:hover{color:var(--accent);border-color:var(--accent)}
.link-arrow:hover .arrow{transform:translateX(3px)}
.link-arrow .arrow{transition:transform .18s var(--ease)}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:rgba(143,166,163,.18);color:rgba(22,24,26,.72);font-size:12.5px;font-weight:500}
.tag-accent{background:rgba(226,87,31,.12);color:var(--accent)}
.badge-soft{display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:999px;background:rgba(143,166,163,.2);color:rgba(22,24,26,.74);font-size:12.5px;font-weight:500}

/* 面包屑 */
.breadcrumb-bar{padding:24px 0 0}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(22,24,26,.6)}
.breadcrumb-list li{display:flex;align-items:center;gap:8px}
.breadcrumb-list li+li::before{content:"/";color:rgba(22,24,26,.35)}
.breadcrumb-list a{color:rgba(22,24,26,.6);transition:color .18s var(--ease)}
.breadcrumb-list a:hover{color:var(--accent)}
.breadcrumb-list [aria-current]{color:rgba(22,24,26,.85)}

/* 页头 */
.page-hero{padding:40px 0 64px}
.page-hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center}
.page-hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.18;font-weight:800;letter-spacing:.01em;color:var(--brand);margin:16px 0 18px}
.hero-sub{font-size:17.5px;line-height:1.7;color:rgba(22,24,26,.86);max-width:34em}
.hero-desc{margin-top:14px;font-size:15px;line-height:1.8;color:var(--muted);max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.page-hero-media{position:relative}
.page-hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;border:1px solid rgba(246,244,239,.9);box-shadow:var(--sh-md)}
.page-hero-media::before{content:"";position:absolute;inset:auto -14px -14px auto;width:112px;height:112px;border-radius:20px;border:1px solid var(--line);opacity:.7;pointer-events:none}

/* 锚点导航 */
.anchor-wrap{padding-bottom:8px}
.anchor-nav{display:flex;flex-wrap:wrap;gap:10px;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.anchor-pill{display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:#fff;color:rgba(22,24,26,.75);font-size:13.5px;font-weight:500;transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease)}
.anchor-pill:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.anchor-pill.is-active{background:var(--brand);border-color:var(--brand);color:var(--paper)}

/* 板块 */
.section{padding:96px 0;scroll-margin-top:88px}
.section-warm{background:var(--warm)}
.section-head{max-width:46em;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;color:var(--brand);letter-spacing:.01em}
.section-lead{margin-top:14px;font-size:16px;color:rgba(22,24,26,.74)}
.section-eyebrow{display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.08em;color:var(--accent);text-transform:uppercase;margin-bottom:10px}

/* 对照区 */
.compare{border-top:1px solid var(--line)}
.compare-row{display:grid;grid-template-columns:220px minmax(0,1fr);gap:32px;padding:20px 16px;border-bottom:1px solid var(--line);border-radius:12px;transition:background .18s var(--ease)}
.compare-row:hover{background:rgba(239,233,222,.55)}
.compare-label{color:var(--muted);font-size:14px;letter-spacing:.03em}
.compare-value{font-size:16.5px;color:var(--ink)}
.compare-value span{color:rgba(22,24,26,.62);font-size:14.5px}

/* 双列大卡 */
.grid-two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
.big-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease)}
.big-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:#d8d2c6}
.big-card-media{overflow:hidden}
.big-card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease)}
.big-card:hover .big-card-media img{transform:scale(1.03)}
.big-card-body{padding:26px 26px 30px}
.big-card-body h3{font-size:20px;font-weight:600;color:var(--brand);margin:14px 0 12px}
.big-card-body p{font-size:15px;line-height:1.85;color:rgba(22,24,26,.74)}
.big-card-body .link-arrow{margin-top:20px}

/* 核对清单 */
.check-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:56px;align-items:start}
.checks li{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}
.checks li:first-child{border-top:1px solid var(--line)}
.check-num{flex:none;min-width:30px;font-size:15px;font-weight:800;color:var(--accent);letter-spacing:-.01em;font-variant-numeric:tabular-nums}
.check-text{font-size:16px;color:rgba(22,24,26,.86)}
.check-text em{font-style:normal;color:var(--brand);font-weight:600}
.side-note{position:sticky;top:96px;background:var(--warm);border:1px solid var(--line);border-radius:var(--r-card);padding:26px}
.side-note h3{font-size:17px;font-weight:600;color:var(--brand);margin-bottom:12px}
.side-note p{font-size:14.5px;line-height:1.8;color:rgba(22,24,26,.72)}
.side-note ul{margin-top:16px;display:grid;gap:10px}
.side-note ul li{position:relative;padding-left:16px;font-size:14px;color:rgba(22,24,26,.72)}
.side-note ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--accent)}

/* 异常提示 */
.alerts-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 56px}
.alert-item{padding:20px 0;border-top:1px solid var(--line)}
.alert-item h3{font-size:17px;font-weight:600;color:var(--ink)}
.alert-item p{margin-top:8px;font-size:15px;line-height:1.8;color:rgba(22,24,26,.72)}
.notice-dark{margin-top:40px;background:var(--deep);border-radius:var(--r-card);padding:26px 30px;display:flex;gap:18px;align-items:flex-start}
.notice-dark .bar{flex:none;width:3px;align-self:stretch;border-radius:3px;background:var(--accent)}
.notice-dark p{font-size:15px;line-height:1.8;color:rgba(246,244,239,.88)}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:56px;align-items:start}
.faq-intro h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700;color:var(--brand)}
.faq-intro p{margin-top:14px;font-size:15px;color:rgba(22,24,26,.72)}
.faq-list{border-bottom:1px solid var(--line)}
.faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;background:none;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;transition:color .18s var(--ease)}
.faq-q:hover{color:var(--brand)}
.faq-item.is-open .faq-q{color:var(--brand)}
.faq-icon{position:relative;flex:none;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);transition:transform .22s var(--ease),background .18s var(--ease)}
.faq-icon::before{left:0;top:7.25px;width:16px;height:1.5px}
.faq-icon::after{left:7.25px;top:0;width:1.5px;height:16px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s var(--ease)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a p{padding:0 40px 24px 0;font-size:15.5px;line-height:1.85;color:rgba(22,24,26,.76)}

/* CTA 条 */
.cta-section{padding:0 0 104px}
.cta-box{border:1px solid var(--line);border-radius:20px;background:#fff;padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta-box h3{font-size:clamp(20px,2.4vw,26px);line-height:1.35;font-weight:700;color:var(--brand)}
.cta-box p{margin-top:12px;font-size:15px;color:rgba(22,24,26,.72);max-width:36em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:none}

/* 页脚 */
.site-footer{margin-top:0;background:var(--deep);color:rgba(246,244,239,.72);padding:72px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.5fr;gap:40px}
.footer-brand .site-logo{color:var(--paper)}
.footer-brand p{margin-top:18px;line-height:1.8;color:rgba(246,244,239,.6);max-width:32em}
.footer-title{color:var(--paper);font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.footer-links li{margin-bottom:10px}
.footer-links a{color:rgba(246,244,239,.72);transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--accent)}
.footer-form label{display:block;font-size:13px;color:rgba(246,244,239,.7);margin-bottom:10px}
.footer-form .field{display:flex;gap:10px}
.footer-form input{flex:1;min-width:0;height:48px;padding:0 14px;border-radius:var(--r-btn);border:1px solid rgba(246,244,239,.2);background:rgba(246,244,239,.06);color:var(--paper);font-size:14px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.footer-form input::placeholder{color:rgba(246,244,239,.36)}
.footer-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(226,87,31,.18)}
.footer-form button{flex:none;height:48px;padding:0 20px;border-radius:var(--r-btn);border:1px solid var(--accent);background:var(--accent);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:background .18s var(--ease),transform .18s var(--ease)}
.footer-form button:hover{background:#c94715;transform:translateY(-1px)}
.footer-hint{margin-top:12px;font-size:13px;color:rgba(246,244,239,.48)}
.footer-contact{margin-top:18px;font-size:13px;line-height:1.7;color:rgba(246,244,239,.6)}
.footer-bottom{margin-top:52px;padding-top:22px;border-top:1px solid rgba(246,244,239,.14);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:rgba(246,244,239,.5)}

/* 响应式 */
@media(max-width:1199.98px){
  .page-hero-grid{gap:40px}
  .check-grid{gap:40px}
  .faq-layout{gap:40px}
}
@media(max-width:991.98px){
  .page-hero{padding:28px 0 48px}
  .page-hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero-media::before{display:none}
  .section{padding:72px 0}
  .section-head{margin-bottom:32px}
  .compare-row{grid-template-columns:180px minmax(0,1fr);gap:24px}
  .check-grid{grid-template-columns:1fr;gap:32px}
  .side-note{position:static}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .alerts-grid{grid-template-columns:1fr;gap:0}
  .cta-box{flex-direction:column;align-items:flex-start;gap:26px;padding:32px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .nav-toggle{display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:44px;height:44px;padding:0;background:transparent;border:0;cursor:pointer;position:relative;z-index:70}
  .nav-toggle span{display:block;width:22px;height:2px;border-radius:2px;background:var(--brand);transition:transform .22s var(--ease),opacity .18s var(--ease)}
  body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  body.nav-open .nav-toggle span:nth-child(2){opacity:0}
  body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .primary-nav{position:fixed;top:0;right:0;z-index:60;height:100vh;height:100dvh;width:min(84vw,340px);background:var(--paper);flex-direction:column;align-items:stretch;gap:0;padding:88px 0 32px;transform:translateX(102%);transition:transform .28s var(--ease);box-shadow:var(--sh-md);overflow-y:auto}
  body.nav-open .primary-nav{transform:translateX(0)}
  body.nav-open{overflow:hidden}
  body.nav-open::after{content:"";position:fixed;inset:0;background:rgba(18,16,14,.36);z-index:55}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li{border-bottom:1px solid var(--line)}
  .nav-link{display:block;padding:0 24px;line-height:48px;font-size:16px}
  .nav-link::after{display:none}
  .nav-cta{margin:22px 24px 0;width:calc(100% - 48px);height:48px}
}
@media(max-width:767.98px){
  body{font-size:16px}
  .grid-two{grid-template-columns:1fr;gap:24px}
  .compare-row{grid-template-columns:1fr;gap:6px;padding:18px 12px}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;justify-content:center}
  .cta-actions{width:100%}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%;justify-content:center}
}
@media(max-width:575.98px){
  .section{padding:56px 0}
  .cta-section{padding-bottom:72px}
  .site-logo{font-size:15.5px}
  .logo-mark{width:28px;height:28px;border-radius:8px}
  .footer-grid{grid-template-columns:1fr}
  .footer-form .field{flex-direction:column}
  .footer-form button{width:100%}
  .anchor-nav{gap:8px}
  .anchor-pill{height:34px;padding:0 14px;font-size:13px}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --ink:#16181A;
  --brand:#1E3A38;
  --accent:#E2571F;
  --muted:#8FA6A3;
  --paper:#F6F4EF;
  --warm:#EFE9DE;
  --line:#E3DED4;
  --deep:#12100E;
  --ok:#2F6F63;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-sm:0 1px 2px rgba(18,16,14,.06);
  --shadow-md:0 12px 32px -12px rgba(18,16,14,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --nav-h:72px;
}
/* ============ 基础 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color 180ms var(--ease),border-color 180ms var(--ease)}
a:hover{color:var(--accent)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1200px){.container{padding:0 32px}}
@media (min-width:1600px){.container{max-width:1280px}}
.section{padding:56px 0}
@media (min-width:768px){.section{padding:72px 0}}
@media (min-width:992px){.section{padding:104px 0}}
.section--warm{background:var(--warm)}
.section--tight{padding-top:0}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.18;font-weight:800;letter-spacing:.01em}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;letter-spacing:.01em}
h3{font-size:20px;line-height:1.5;font-weight:600}
.lead{font-size:17px;color:#3B4145;max-width:760px}
.small{font-size:13px;line-height:1.6;color:var(--muted)}
.eyebrow{font-family:var(--font-num);font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px}
.sec-head p{color:#4A5054;margin-top:10px;max-width:620px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;font-size:15px;font-weight:600;
  border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  transition:transform 180ms var(--ease),background-color 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
  white-space:nowrap;
}
.btn .arrow{transition:transform 180ms var(--ease);font-family:var(--font-num)}
.btn:hover .arrow{transform:translateX(3px)}
.btn-primary,.btn.btn-primary{background:var(--accent);border-color:var(--accent);color:#FBF8F3}
.btn-primary:hover{background:#C8471A;border-color:#C8471A;color:#FBF8F3;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-outline,.btn.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-outline:hover{background:var(--brand);border-color:var(--brand);color:#FBF8F3;transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 20px;font-size:15px}
.btn-lg{height:56px;padding:0 28px;font-size:16px}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:transparent}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:#2A3134;
  border-bottom:1.5px solid var(--line);padding-bottom:2px;
}
.link-arrow:hover{color:var(--accent);border-color:var(--accent)}
.link-arrow .arrow{transition:transform 180ms var(--ease);font-family:var(--font-num)}
.link-arrow:hover .arrow{transform:translateX(3px)}

/* ============ 顶部细条 ============ */
.topbar{background:var(--brand);color:#E7EDEA;font-size:13px;line-height:36px}
.topbar .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar a{color:#F0E4D8;border-bottom:1px solid rgba(240,228,216,.45)}
.topbar a:hover{color:#fff}
.topbar .tb-note{opacity:.88;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1040;background:var(--paper);
  border-bottom:1px solid transparent;transition:border-color 200ms var(--ease),background-color 200ms var(--ease),backdrop-filter 200ms var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(246,244,239,.92);backdrop-filter:blur(10px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:var(--nav-h)}
.site-logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);display:inline-flex;align-items:center;justify-content:center;flex:none}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--brand);white-space:nowrap}
.main-nav ul{display:flex;align-items:center;gap:28px}
.main-nav a{position:relative;font-size:15px;font-weight:500;color:rgba(22,24,26,.85);padding:6px 0;display:inline-block}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:-8px;height:2px;width:0;background:var(--accent);
  transition:width 180ms var(--ease);
}
.main-nav a:hover{color:var(--accent)}
.main-nav a:hover::after{width:100%}
.main-nav a.active{color:var(--accent)}
.main-nav a.active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:transparent;position:relative;cursor:pointer;
}
.nav-toggle span{position:absolute;left:11px;width:22px;height:2px;background:var(--brand);border-radius:2px;transition:transform 200ms var(--ease),opacity 160ms var(--ease)}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:28px}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer-mask{position:fixed;inset:0;background:rgba(18,16,14,.42);opacity:0;visibility:hidden;transition:opacity 220ms var(--ease),visibility 220ms var(--ease);z-index:1041}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(86vw,340px);background:var(--paper);z-index:1042;
  transform:translateX(100%);transition:transform 260ms var(--ease);
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:transparent;color:var(--brand);font-size:20px;line-height:1;cursor:pointer}
.mobile-drawer nav a{display:flex;align-items:center;min-height:48px;font-size:16px;font-weight:500;border-bottom:1px solid var(--line);color:rgba(22,24,26,.88)}
.mobile-drawer nav a.active{color:var(--accent)}
.mobile-drawer .drawer-cta{margin-top:auto;padding-top:20px}
.mobile-drawer .drawer-cta .btn{width:100%}
@media (max-width:991.98px){
  .main-nav{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:block}
  .logo-text{font-size:15px}
  .logo-mark{width:30px;height:30px}
}
@media (min-width:992px){.mobile-drawer,.drawer-mask{display:none}}

/* ============ 面包屑 ============ */
.crumb{padding:18px 0 0;font-size:13px;color:rgba(22,24,26,.6)}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumb li::after{content:"/";margin-left:8px;color:var(--line)}
.crumb li:last-child::after{content:"";margin:0}
.crumb a:hover{color:var(--accent)}
.crumb li[aria-current]{color:rgba(22,24,26,.85);max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 页面头部 ============ */
.page-hero{padding:28px 0 0}
.page-hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media (min-width:992px){.page-hero-grid{grid-template-columns:1.15fr .85fr;gap:56px}}
.page-hero .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.badge-pill{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;background:rgba(143,166,163,.18);color:rgba(22,24,26,.75);
}
.badge-pill--accent{background:rgba(226,87,31,.12);color:var(--accent)}
.page-hero h1{margin-bottom:18px}
.page-hero .lead{font-size:17px;color:#41474B;max-width:640px}
.hero-figure{position:relative}
.hero-figure img{width:100%;aspect-ratio:4/3;border-radius:20px;border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.hero-figure .hero-badge{
  position:absolute;left:16px;bottom:16px;background:rgba(246,244,239,.94);border:1px solid var(--line);
  border-radius:999px;padding:8px 16px;font-size:13px;font-weight:600;color:var(--brand);
}

/* ============ 锚点胶囊导航 ============ */
.anchor-nav{position:sticky;top:calc(var(--nav-h) + 1px);z-index:1020;background:var(--paper);padding:16px 0;border-bottom:1px solid var(--line)}
.anchor-nav ul{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding-bottom:2px}
.anchor-nav ul::-webkit-scrollbar{display:none}
.anchor-nav a{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:transparent;font-size:14px;font-weight:600;color:#41474B;white-space:nowrap;
  transition:all 180ms var(--ease);
}
.anchor-nav a:hover{border-color:var(--brand);color:var(--brand)}
.anchor-nav a.is-current{background:var(--brand);border-color:var(--brand);color:#F6F4EF}

/* ============ 时间轴 ============ */
.timeline{margin-top:8px}
.tl-item{position:relative;display:grid;grid-template-columns:132px 1fr;gap:0 48px;padding-bottom:52px}
.tl-item::before{content:"";position:absolute;left:132px;top:14px;bottom:-14px;width:1px;background:var(--line)}
.tl-item:last-child{padding-bottom:0}
.tl-item:last-child::before{display:none}
.tl-node{
  position:absolute;left:132px;top:8px;width:11px;height:11px;border-radius:50%;background:var(--accent);
  transform:translateX(-50%);box-shadow:0 0 0 5px var(--paper);
}
.tl-stage{font-size:13px;color:var(--muted);font-weight:600;padding-top:2px;line-height:1.6}
.tl-stage strong{display:block;font-family:var(--font-num);font-size:22px;color:var(--brand);font-weight:800;letter-spacing:-.01em;margin-bottom:2px}
.tl-body h3{margin-bottom:10px}
.tl-body p{color:#454B4F;margin-bottom:14px;max-width:640px}
.tl-figure{margin-top:16px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line)}
.tl-figure img{width:100%;aspect-ratio:16/9}
.tl-note{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
@media (max-width:767.98px){
  .tl-item{grid-template-columns:1fr;padding-left:26px;gap:0}
  .tl-item::before{left:5px}
  .tl-node{left:5px;top:8px}
  .tl-stage{margin-bottom:10px}
  .tl-stage strong{display:inline;font-size:17px;margin-right:6px}
}

/* ============ 功能速查表 ============ */
.spec-table{border-top:1px solid var(--line)}
.spec-row{display:grid;grid-template-columns:1fr;gap:6px;padding:20px 0;border-bottom:1px solid var(--line);transition:background-color 180ms var(--ease)}
@media (min-width:768px){.spec-row{grid-template-columns:230px 1fr 190px;gap:28px;align-items:start;padding:22px 12px}}
.spec-row:hover{background:rgba(239,233,222,.6)}
.spec-key{font-weight:600;color:var(--brand)}
.spec-val{color:#454B4F;font-size:16px}
.spec-tag{font-size:12px;color:var(--ok);font-weight:600}
@media (min-width:768px){.spec-tag{text-align:right}}

/* ============ 排查清单 ============ */
.check-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.check-grid{grid-template-columns:repeat(2,1fr);gap:24px}}
.check-card{border:1px solid var(--line);border-radius:var(--r-card);padding:24px;background:#FBFAF7;transition:transform 200ms var(--ease),box-shadow 200ms var(--ease)}
.check-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.check-card .num{font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.06em}
.check-card h3{font-size:18px;margin:8px 0 10px}
.check-card p{font-size:15px;color:#4A5054}
.check-list{margin-top:14px;border-top:1px solid var(--line);padding-top:14px}
.check-list li{position:relative;padding-left:18px;font-size:15px;color:#454B4F;margin-bottom:8px}
.check-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;background:var(--accent);border-radius:1px}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:992px){.faq-grid{grid-template-columns:4fr 8fr;gap:56px}}
.faq-intro h2{margin-bottom:14px}
.faq-intro p{color:#4A5054;font-size:15px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  background:transparent;border:0;padding:22px 2px;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color 200ms var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-item.is-open .faq-q{color:var(--brand)}
.faq-icon{position:relative;flex:none;width:18px;height:18px;margin-top:5px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--accent);transition:transform 220ms var(--ease),opacity 220ms var(--ease)}
.faq-icon::before{left:0;top:8px;width:18px;height:1.6px}
.faq-icon::after{left:8px;top:0;width:1.6px;height:18px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms var(--ease)}
.faq-a-inner{padding:0 44px 22px 2px;color:#4A5054;font-size:16px}
.faq-a-inner p+p{margin-top:10px}

/* ============ CTA 条 ============ */
.cta-bar{border:1px solid var(--line);border-radius:var(--r-card);padding:32px 24px;background:#FBFAF7}
@media (min-width:768px){.cta-bar{padding:44px 40px}}
.cta-bar .cta-inner{display:grid;grid-template-columns:1fr;gap:24px;align-items:center}
@media (min-width:992px){.cta-bar .cta-inner{grid-template-columns:1fr auto;gap:48px}}
.cta-bar h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.cta-bar p{color:#4A5054;max-width:660px;font-size:16px}
.cta-bar .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 深色转化区 ============ */
.deep-cta{background:var(--deep);color:#EFEDE8;padding:64px 0}
@media (min-width:992px){.deep-cta{padding:88px 0}}
.deep-cta h2{color:#FBF8F3;margin-bottom:14px}
.deep-cta p{color:rgba(239,237,232,.76);max-width:620px;margin-bottom:24px}
.deep-cta .deep-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:center}
@media (min-width:992px){.deep-cta .deep-grid{grid-template-columns:1fr auto;gap:56px}}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);color:#B9C2BF;font-size:14px;padding:64px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px}}
.site-footer .site-logo{margin-bottom:16px}
.site-footer .logo-text{color:#F6F4EF}
.site-footer p{color:#9AA6A3;line-height:1.8;max-width:360px}
.footer-title{font-size:13px;letter-spacing:.08em;color:#F6F4EF;font-weight:700;margin-bottom:14px}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#B9C2BF}
.footer-links a:hover{color:var(--accent)}
.footer-form label{display:block;font-size:13px;color:#9AA6A3;margin-bottom:8px}
.footer-form .field{display:flex;gap:8px;flex-wrap:wrap}
.footer-form input{
  flex:1 1 160px;height:48px;padding:0 14px;border-radius:var(--r-btn);border:1px solid #2E2C29;
  background:#1B1917;color:#F6F4EF;font-size:15px;transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.footer-form input::placeholder{color:#6E7875}
.footer-form input:focus{outline:none;border-color:var(--muted);box-shadow:0 0 0 2px rgba(226,87,31,.35)}
.footer-form button{
  height:48px;padding:0 20px;border-radius:var(--r-btn);border:1px solid var(--accent);
  background:var(--accent);color:#FBF8F3;font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color 180ms var(--ease),transform 180ms var(--ease);
}
.footer-form button:hover{background:#C8471A;transform:translateY(-1px)}
.footer-hint{font-size:13px;color:#78827F;margin-top:10px}
.footer-contact{margin-top:14px;font-size:13px;color:#8B9693}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid #26242271;border-top-color:rgba(246,244,239,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#8B9693;
}

/* ============ 底部固定转化条 ============ */
.float-cta{
  position:fixed;z-index:1030;right:24px;bottom:24px;
  display:inline-flex;align-items:center;gap:16px;
  background:var(--brand);color:#F6F4EF;border-radius:999px;padding:12px 20px;
  box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity 300ms var(--ease),transform 300ms var(--ease),visibility 300ms var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta span{font-size:14px;font-weight:600}
.float-cta .btn{height:40px;padding:0 18px;font-size:14px}
@media (max-width:991.98px){
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;justify-content:space-between;
    padding:8px 16px calc(8px + env(safe-area-inset-bottom));gap:12px;
  }
  .float-cta span{font-size:13px;line-height:1.4}
  body{padding-bottom:64px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}