/* roulang page: index */
:root{
  --brand:#0E5B54;
  --brand-deep:#093C38;
  --brand-tint:#E4EFED;
  --accent:#E49A2F;
  --accent-soft:#F6E7CE;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --ink:#14181A;
  --ink-2:#4B5457;
  --line:rgba(20,24,26,.10);
  --danger:#B4472E;
  --r-card:16px;
  --r-btn:10px;
  --r-img:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,24,26,.06);
  --sh-2:0 14px 36px rgba(20,24,26,.10);
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:40px;--sp-5:64px;--sp-6:96px;--sp-7:128px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.85;font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-card)}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-deep)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;line-height:1.35;color:var(--ink)}
h1{font-size:clamp(32px,4.4vw,60px)}
h2{font-size:clamp(26px,2.6vw,38px);margin-bottom:var(--sp-2)}
h3{font-size:clamp(19px,1.5vw,24px);margin-bottom:12px}
p{margin:0 0 1.1em}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:clamp(56px,8vw,128px) 0}
.section--tight{padding:clamp(48px,6vw,96px) 0}
.section--surface{background:var(--surface)}
.section--tint{background:var(--brand-tint)}
.section--dark{background:var(--brand-deep);color:#fff}
.section--dark h2,.section--dark h3{color:#fff}
.section--line{border-top:1px solid var(--line)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);font-weight:700;margin-bottom:var(--sp-2)}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);display:block}
.lede{font-size:17px;color:var(--ink-2);max-width:720px;line-height:1.9}
.section--dark .lede{color:rgba(255,255,255,.78)}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;
  border-radius:var(--r-btn);font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  min-height:44px;white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:#0B4A44;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--line);background-color:var(--surface)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-2px)}
.btn-ghost--light{background:transparent;color:#fff;border-color:rgba(255,255,255,.32)}
.btn-ghost--light:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}
.btn-block{width:100%}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:transparent;transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;border-bottom:1px solid transparent}
.site-header.is-stuck{background:rgba(255,255,255,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;gap:var(--sp-3);height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand:hover{color:var(--brand)}
.brand-mark{width:24px;height:24px;color:var(--brand);display:block}
.brand-text{font-size:16px;font-weight:700;letter-spacing:-0.01em}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:var(--sp-2)}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--ink-2);padding:22px 0;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto}
.cmd-search{position:relative;display:flex;align-items:center;width:240px;height:38px;padding:0 10px 0 34px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-btn);transition:width .25s ease,border-color .2s ease,box-shadow .2s ease}
.cmd-search:hover{border-color:rgba(14,91,84,.4)}
.cmd-search:focus-within{width:320px;border-color:var(--brand);box-shadow:0 0 0 2px rgba(14,91,84,.20)}
.cmd-search svg{position:absolute;left:11px;width:15px;height:15px;color:var(--ink-2)}
.cmd-search input{border:0;background:transparent;width:100%;font-size:14px;color:var(--ink);outline:none;height:100%}
.cmd-search input::placeholder{color:var(--ink-2);opacity:.85}
.cmd-kbd{font-size:11px;color:var(--ink-2);border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-variant-numeric:tabular-nums}
.cmd-panel{position:absolute;top:48px;left:0;width:100%;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-2);padding:12px;opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;z-index:5}
.cmd-search:focus-within .cmd-panel{opacity:1;visibility:visible;transform:translateY(0)}
.cmd-panel span{display:block;font-size:12px;color:var(--ink-2);margin-bottom:8px}
.cmd-tags{display:flex;flex-wrap:wrap;gap:6px}
.cmd-tags b{font-size:12px;font-weight:500;background:var(--brand-tint);color:var(--brand);border-radius:var(--r-pill);padding:4px 10px}
.nav-login{font-size:15px;font-weight:500;color:var(--ink-2);padding:8px 4px;white-space:nowrap}
.nav-login:hover{color:var(--ink)}
.nav-cta{height:40px;padding:0 20px;font-size:15px}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--surface);border-radius:var(--r-btn);
  align-items:center;justify-content:center;cursor:pointer;color:var(--ink)}
.burger span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
.burger span::before{top:-6px}.burger span::after{top:6px}

/* 抽屉 */
.drawer{position:fixed;inset:0;background:var(--bg);z-index:90;transform:translateY(-100%);transition:transform .3s cubic-bezier(.22,.61,.36,1);display:flex;flex-direction:column;padding:24px 20px 40px;overflow-y:auto}
.drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);background:var(--surface);border-radius:var(--r-btn);font-size:20px;line-height:1;color:var(--ink);cursor:pointer}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:28px}
.drawer-nav a{font-size:22px;font-weight:600;color:var(--ink);padding:12px 0;border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--brand)}
.drawer .cmd-search{width:100%;margin-bottom:20px}
.drawer .cmd-search:focus-within{width:100%}

/* ---------- Hero ---------- */
.hero{position:relative;padding:clamp(48px,7vw,104px) 0 clamp(48px,7vw,96px);overflow:hidden}
.hero::before{content:"";position:absolute;top:-160px;right:-160px;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(14,91,84,.06),rgba(14,91,84,0) 70%);pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:6fr 6fr;gap:var(--sp-5);align-items:center}
.hero h1{margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:560px;margin-bottom:var(--sp-4);line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:var(--sp-4)}
.hero-stats{display:flex;flex-wrap:wrap;gap:var(--sp-4)}
.hero-stat strong{display:block;font-size:26px;font-weight:700;color:var(--brand);line-height:1.2}
.hero-stat span{font-size:13px;color:var(--ink-2)}
.hero-visual{position:relative}
.hero-visual::after{content:"";position:absolute;inset:0;transform:translate(16px,16px);border:1px solid var(--brand);border-radius:var(--r-img);pointer-events:none}
.hero-visual img{position:relative;width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line)}

/* 锚点条 */
.anchor-bar{position:sticky;top:68px;z-index:40;background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.anchor-bar ul{display:flex;gap:26px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.anchor-bar ul::-webkit-scrollbar{display:none}
.anchor-bar a{font-size:14px;color:var(--ink-2);white-space:nowrap;font-weight:500}
.anchor-bar a:hover{color:var(--brand)}

/* ---------- 卖点 ---------- */
.feature-side{position:sticky;top:150px;align-self:flex-start}
.feature-row{display:flex;gap:var(--sp-3);align-items:flex-start;padding:30px 0;border-top:1px solid var(--line)}
.feature-row:last-child{border-bottom:1px solid var(--line)}
.feature-no{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:28px;font-weight:700;color:var(--brand);line-height:1;flex:0 0 56px;font-variant-numeric:tabular-nums}
.feature-body{flex:1 1 auto;min-width:0}
.feature-body p{font-size:15px;color:var(--ink-2);margin-bottom:10px;max-width:600px}
.link-more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;position:relative}
.link-more::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--brand);transition:width .25s ease}
.link-more:hover::after{width:100%}
.feature-thumb{flex:0 0 180px}
.feature-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--line)}

/* ---------- 演示 ---------- */
.demo-grid{display:grid;grid-template-columns:5fr 7fr;gap:var(--sp-5);align-items:center}
.steps{margin-top:var(--sp-3);position:relative;padding-left:28px}
.steps::before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:1px;background:rgba(255,255,255,.18)}
.step{position:relative;padding-bottom:26px}
.step:last-child{padding-bottom:0}
.step::before{content:"";position:absolute;left:-28px;top:8px;width:15px;height:15px;border-radius:50%;background:var(--brand-deep);border:1px solid var(--accent)}
.step h3{font-size:18px;margin-bottom:6px}
.step p{font-size:14px;color:rgba(255,255,255,.72);margin:0;max-width:420px}
.demo-visual{position:relative}
.demo-visual img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);border:8px solid #0B2B28}
.demo-visual::before,.demo-visual::after{content:"";position:absolute;width:16px;height:16px;border:1px solid rgba(255,255,255,.4)}
.demo-visual::before{top:-10px;left:-10px;border-right:0;border-bottom:0}
.demo-visual::after{bottom:-10px;right:-10px;border-left:0;border-top:0}
.demo-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:var(--sp-4)}
.pill{display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.24);font-size:14px;color:rgba(255,255,255,.86)}

/* ---------- 证据 ---------- */
.logo-wall{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin:var(--sp-4) 0 var(--sp-5)}
.logo-chip{display:flex;align-items:center;justify-content:center;height:64px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);font-size:14px;color:var(--ink-2);opacity:.55;transition:opacity .25s ease,border-color .25s ease}
.logo-chip:hover{opacity:1;border-color:rgba(14,91,84,.35)}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-3)}
.quote-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);
  transition:box-shadow .25s ease,transform .25s ease}
.quote-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.quote-card:nth-child(2){margin-top:32px}
.quote-card p{font-size:15px;color:var(--ink);line-height:1.85}
.quote-person{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}
.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--brand-tint),var(--accent-soft));
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:var(--brand)}
.quote-person b{display:block;font-size:14px}
.quote-person span{font-size:13px;color:var(--ink-2)}

/* ---------- 价格 ---------- */
.billing-toggle{display:inline-flex;padding:4px;background:var(--brand-tint);border-radius:var(--r-pill);margin:var(--sp-3) 0 var(--sp-4)}
.billing-toggle button{border:0;background:transparent;padding:8px 22px;border-radius:var(--r-pill);font-size:14px;font-weight:600;color:var(--ink-2);cursor:pointer;transition:background .2s ease,color .2s ease}
.billing-toggle button.is-on{background:var(--surface);color:var(--brand);box-shadow:var(--sh-1)}
.price-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 26px;height:100%;display:flex;flex-direction:column;transition:box-shadow .25s ease,transform .25s ease}
.price-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.price-card.is-featured{border:1px solid var(--brand);box-shadow:var(--sh-2)}
.price-card.is-featured::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--brand);border-radius:var(--r-card) var(--r-card) 0 0}
.price-badge{position:absolute;top:-13px;right:22px;background:var(--accent);color:#3A2606;font-size:12px;font-weight:700;
  padding:3px 12px;border-radius:var(--r-pill)}
.price-name{font-size:20px;font-weight:700;margin-bottom:6px}
.price-for{font-size:14px;color:var(--ink-2);margin-bottom:18px;min-height:44px}
.price-num{font-size:36px;font-weight:700;color:var(--ink);line-height:1.2;font-variant-numeric:tabular-nums}
.price-num small{font-size:14px;font-weight:500;color:var(--ink-2);margin-left:6px}
.price-list{margin:22px 0 26px;flex:1 1 auto}
.price-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);padding:7px 0;line-height:1.7}
.price-list li svg{flex:0 0 16px;margin-top:6px;color:var(--brand)}
.price-note{font-size:13px;color:var(--ink-2);text-align:center;margin-top:var(--sp-3)}

/* ---------- 资讯列表 ---------- */
.latest-head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--sp-3);margin-bottom:var(--sp-4)}
.post-card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:box-shadow .25s ease,transform .25s ease;height:100%}
.post-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);color:var(--ink)}
.post-thumb{overflow:hidden}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .6s cubic-bezier(.22,.61,.36,1)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:22px}
.post-card--mini{display:flex;gap:16px;padding:16px;align-items:flex-start}
.post-card--mini .post-thumb{flex:0 0 132px}
.post-card--mini .post-thumb img{aspect-ratio:16/9}
.post-card--mini .post-body{padding:0}
.badge{display:inline-flex;align-items:center;background:var(--accent-soft);color:#7A4A05;font-size:12px;font-weight:600;
  padding:3px 10px;border-radius:var(--r-pill);margin-bottom:10px}
.post-card h3{font-size:19px;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card--mini h3{font-size:16px}
.post-card p{font-size:14px;color:var(--ink-2);margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums;border-top:1px solid var(--line);padding-top:12px}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:200px;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);text-align:center;padding:32px}
.empty-state svg{width:64px;height:64px;color:var(--ink-2);opacity:.6}
.empty-state p{margin:0;font-size:15px;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;background:transparent;border:0;
  text-align:left;cursor:pointer;padding:0;min-height:72px;font-size:17px;font-weight:600;color:var(--ink)}
.faq-q:hover{color:var(--brand)}
.faq-icon{flex:0 0 20px;width:20px;height:20px;position:relative;transition:transform .25s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-icon::before{left:0;right:0;top:9px;height:2px}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px;transition:opacity .25s ease}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{overflow:hidden;max-height:0;transition:max-height .3s ease}
.faq-a p{font-size:15px;line-height:1.85;color:var(--ink-2);margin:0;padding:0 40px 24px 0}
.faq-item.is-open .faq-a{max-height:320px}

/* ---------- 结尾 CTA ---------- */
.cta-band{position:relative;background:var(--brand-deep);overflow:hidden;display:flex;align-items:center;min-height:320px}
.cta-band::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');background-size:cover;
  background-position:center;opacity:.12}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(9,60,56,.6),rgba(9,60,56,.9))}
.cta-inner{position:relative;z-index:2;text-align:center;padding:var(--sp-5) 0;width:100%}
.cta-inner h2{color:#fff;margin-bottom:14px}
.cta-inner p{color:rgba(255,255,255,.78);max-width:620px;margin:0 auto var(--sp-4);font-size:16px}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.78);padding:var(--sp-6) 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:4fr 6fr 4fr;gap:var(--sp-5);padding-bottom:var(--sp-5)}
.site-footer .brand{color:#fff}
.site-footer .brand-mark{color:#fff}
.footer-about p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.7);margin:16px 0 18px;max-width:340px}
.socials{display:flex;gap:10px}
.socials a{width:38px;height:38px;border:1px solid rgba(255,255,255,.22);border-radius:var(--r-btn);display:flex;
  align-items:center;justify-content:center;color:rgba(255,255,255,.8);transition:border-color .2s ease,color .2s ease}
.socials a:hover{border-color:#fff;color:#fff}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-3)}
.footer-cols h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-cols li{margin-bottom:9px}
.footer-cols a{color:rgba(255,255,255,.7);font-size:14px}
.footer-cols a:hover{color:#fff;text-decoration:underline}
.footer-sub h4{color:#fff;font-size:15px;margin-bottom:12px}
.footer-sub p{font-size:13px;color:rgba(255,255,255,.65);margin-bottom:14px}
.sub-form{display:flex;gap:8px}
.sub-form input{flex:1 1 auto;height:44px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.06);padding:0 14px;color:#fff;font-size:14px;outline:none;transition:border-color .2s ease,box-shadow .2s ease}
.sub-form input::placeholder{color:rgba(255,255,255,.5)}
.sub-form input:focus{border-color:var(--brand-tint);box-shadow:0 0 0 2px rgba(228,239,237,.25)}
.sub-form .btn{height:44px;padding:0 18px;font-size:14px;background:var(--accent);color:#3A2606}
.sub-form .btn:hover{background:#F0A93D;color:#3A2606}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:20px 0 28px;font-size:12px;color:rgba(255,255,255,.6)}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}

/* ---------- 浮动 CTA ---------- */
.float-cta{position:fixed;right:28px;bottom:28px;z-index:70;display:inline-flex;align-items:center;gap:8px;height:48px;
  padding:0 22px;border-radius:var(--r-pill);background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .2s ease,transform .2s ease,visibility .2s ease,background .2s ease}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:#0B4A44;color:#fff;transform:translateY(-2px)}
.mobile-cta{display:none}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1)}
.reveal.is-in{opacity:1;transform:translateY(0)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .section{padding:88px 0}
  .price-card{padding:28px 20px}
}
@media (max-width:1023px){
  .main-nav,.nav-tools .cmd-search,.nav-tools .nav-login{display:none}
  .burger{display:inline-flex}
  .hero-inner{grid-template-columns:1fr;gap:var(--sp-4)}
  .feature-side{position:static;margin-bottom:var(--sp-3)}
  .demo-grid{grid-template-columns:1fr;gap:var(--sp-4)}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .quote-grid{grid-template-columns:1fr;gap:var(--sp-3)}
  .quote-card:nth-child(2){margin-top:0}
  .footer-grid{grid-template-columns:1fr;gap:var(--sp-4)}
  .anchor-bar{top:68px}
}
@media (max-width:767px){
  .container{padding-left:20px;padding-right:20px}
  .section{padding:56px 0}
  body{padding-bottom:76px}
  h1{font-size:clamp(32px,8vw,40px)}
  .hero-stats{gap:var(--sp-3)}
  .hero-stat strong{font-size:22px}
  .feature-row{flex-direction:column;gap:16px;padding:24px 0}
  .feature-no{flex:none;font-size:24px}
  .feature-thumb{flex:none;width:100%}
  .feature-thumb img{aspect-ratio:3/2}
  .hero-visual img{aspect-ratio:3/2}
  .logo-wall{grid-template-columns:repeat(2,1fr)}
  .faq-q{min-height:64px;font-size:16px}
  .cta-band{min-height:260px}
  .footer-cols{grid-template-columns:1fr 1fr;gap:var(--sp-3)}
  .float-cta{display:none}
  .mobile-cta{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;align-items:center;justify-content:space-between;
    gap:12px;background:var(--surface);border-top:1px solid var(--line);padding:8px 20px calc(8px + env(safe-area-inset-bottom));
    height:60px;box-shadow:0 -4px 18px rgba(20,24,26,.06)}
  .mobile-cta span{font-size:13px;color:var(--ink-2);line-height:1.4}
  .mobile-cta .btn{height:44px;padding:0 18px;font-size:15px}
  .post-card--mini{flex-direction:column}
  .post-card--mini .post-thumb{flex:none;width:100%}
  .post-card--mini .post-thumb img{aspect-ratio:16/9}
  .billing-toggle{margin-bottom:var(--sp-3)}
  .price-for{min-height:0}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%}
  .footer-cols{grid-template-columns:1fr}
  .sub-form{flex-direction:column}
  .sub-form .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#0E5B54;
  --brand-hover:#0B4A45;
  --brand-deep:#093C38;
  --brand-tint:#E4EFED;
  --accent:#E49A2F;
  --accent-soft:#F6E7CE;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --ink:#14181A;
  --ink-2:#4B5457;
  --line:rgba(20,24,26,.10);
  --danger:#B4472E;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-lg:20px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,24,26,.06);
  --shadow-2:0 14px 36px rgba(20,24,26,.10);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:40px;
  --space-5:64px;
  --space-6:96px;
  --space-7:128px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-hover);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;line-height:1.35;color:var(--ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;}

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

/* ===== 基础按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:0;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background-color .25s ease,border-color .25s ease,color .2s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand);}
.btn-primary:hover,.btn-primary:focus{background:var(--brand-hover);border-color:var(--brand-hover);color:#fff;box-shadow:0 12px 26px rgba(14,91,84,.22);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--brand);border-color:rgba(14,91,84,.34);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--brand-tint);border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--brand-deep);border-color:#fff;}
.btn-light:hover{background:#F2F7F6;color:var(--brand-deep);transform:translateY(-2px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-outline-light:hover{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.75);transform:translateY(-2px);}
.btn .arrow{transition:transform .25s var(--ease);}
.btn:hover .arrow{transform:translateX(3px);}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;width:100%;
  background:transparent;border-bottom:1px solid transparent;
  transition:background-color .3s ease,border-color .3s ease,backdrop-filter .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:0 1px 2px rgba(20,24,26,.04);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto;}
.brand:hover{color:var(--ink);}
.brand-mark{width:24px;height:24px;color:var(--brand);flex:0 0 auto;}
.brand-text{font-size:16px;font-weight:700;letter-spacing:-0.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;flex:1 1 auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--ink-2);border-radius:8px;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--ink);background:rgba(14,91,84,.06);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto;}

.cmd-search{position:relative;width:240px;transition:width .3s var(--ease);}
.cmd-search > svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--ink-2);pointer-events:none;}
.cmd-search input[type="search"]{
  width:100%;height:38px;padding:0 56px 0 38px;margin:0;
  font-size:14px;color:var(--ink);background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  box-shadow:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.cmd-search input[type="search"]::placeholder{color:#8A9295;}
.cmd-search input[type="search"]:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(14,91,84,.16);}
.cmd-kbd{
  position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-size:11px;line-height:1;padding:4px 7px;border-radius:6px;
  background:var(--bg);border:1px solid var(--line);color:var(--ink-2);
  font-family:ui-monospace,monospace;
}
.cmd-panel{
  position:absolute;left:0;right:0;top:calc(100% + 10px);
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-2);padding:14px 16px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.cmd-panel span{font-size:12px;color:var(--ink-2);letter-spacing:.04em;}
.cmd-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}
.cmd-tags b{font-size:13px;font-weight:500;padding:5px 10px;border-radius:var(--radius-pill);background:var(--brand-tint);color:var(--brand);}
.cmd-search:focus-within{width:320px;}
.cmd-search:focus-within .cmd-panel{opacity:1;visibility:visible;transform:translateY(0);}

.nav-login{font-size:14px;font-weight:500;color:var(--ink-2);padding:0 6px;}
.nav-login:hover{color:var(--brand);}
.nav-cta{min-height:38px;padding:0 18px;font-size:14px;border-radius:var(--radius-btn);}
.burger{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:10px;cursor:pointer;padding:0;
}
.burger span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .25s var(--ease),top .25s var(--ease);
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}

/* ===== 移动抽屉 ===== */
.nav-drawer{
  position:fixed;inset:0;z-index:120;background:#fff;
  padding:20px 20px calc(28px + env(safe-area-inset-bottom,0px));
  display:flex;flex-direction:column;gap:24px;overflow-y:auto;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .34s var(--ease),opacity .28s ease,visibility .28s ease;
}
.nav-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;
  font-size:20px;line-height:1;color:var(--ink);cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-top:8px;}
.drawer-nav a{font-size:22px;font-weight:600;color:var(--ink);padding:12px 0;border-bottom:1px solid var(--line);}
.drawer-nav a.is-active{color:var(--brand);}
.drawer-search input[type="search"]{
  width:100%;height:46px;padding:0 16px;border:1px solid var(--line);border-radius:var(--radius-btn);
  font-size:15px;background:#fff;
}
.drawer-search input[type="search"]:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(14,91,84,.16);}
.drawer-cta{display:flex;flex-direction:column;gap:12px;margin-top:auto;}

/* ===== 面包屑 ===== */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--bg);}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:20px 0;font-size:14px;color:var(--ink-2);}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--brand);text-decoration:underline;}
.crumb .sep{color:rgba(20,24,26,.28);}
.crumb .current{color:var(--ink-2);}

/* ===== 分类页头 ===== */
.cat-hero{padding:56px 0 8px;background:var(--bg);position:relative;overflow:hidden;}
.cat-hero::before{
  content:"";position:absolute;right:-140px;top:-160px;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(14,91,84,.06),rgba(14,91,84,0) 70%);pointer-events:none;
}
.cat-hero .container{position:relative;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--radius-pill);
  background:var(--brand-tint);color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.04em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--brand);}
.cat-hero h1{
  margin-top:20px;font-size:clamp(32px,4.4vw,54px);line-height:1.24;letter-spacing:-0.012em;max-width:900px;
}
.cat-sub{margin-top:20px;max-width:720px;font-size:17px;line-height:1.85;color:var(--ink-2);}
.cat-banner{
  position:relative;margin:40px 0 0;border-radius:var(--radius-lg);
  overflow:hidden;border:1px solid var(--line);aspect-ratio:21/9;background:linear-gradient(135deg,var(--bg),var(--accent-soft));
}
.cat-banner img{width:100%;height:100%;object-fit:cover;}

/* ===== 区块通用 ===== */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--surface{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section--soft{background:var(--brand-tint);}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head h2{font-size:clamp(26px,3vw,38px);line-height:1.3;letter-spacing:-0.012em;}
.sec-head p{margin-top:16px;font-size:16.5px;line-height:1.85;color:var(--ink-2);}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center;}

/* ===== 图文交替 ===== */
.alt-list{display:flex;flex-direction:column;}
.alt-row{
  display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;
  padding:64px 0;border-top:1px solid var(--line);
}
.alt-row:first-child{border-top:1px solid var(--line);}
.alt-row.is-reverse{grid-template-columns:7fr 5fr;}
.alt-row.is-reverse .alt-text{order:2;}
.alt-row.is-reverse .alt-media{order:1;}
.alt-index{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:.14em;
  color:var(--brand);text-transform:uppercase;
}
.alt-index b{font-family:ui-monospace,monospace;font-size:15px;letter-spacing:0;}
.alt-text h3{margin-top:14px;font-size:clamp(20px,2.1vw,24px);line-height:1.4;}
.alt-text > p{margin-top:12px;font-size:16px;line-height:1.85;color:var(--ink-2);}
.points{margin-top:20px;display:grid;gap:10px;}
.points li{position:relative;padding-left:18px;font-size:15.5px;line-height:1.75;color:var(--ink-2);}
.points li::before{
  content:"";position:absolute;left:0;top:.66em;width:6px;height:6px;border-radius:2px;background:var(--brand);
}
.alt-media{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:4/3;background:linear-gradient(135deg,var(--bg),var(--accent-soft));box-shadow:var(--shadow-1);
}
.alt-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease);}
.alt-media:hover img{transform:scale(1.03);}
.alt-media::after{content:"";position:absolute;inset:0;border:1px solid rgba(255,255,255,.28);border-radius:var(--radius-lg);pointer-events:none;}

/* ===== 关键要点卡（错位） ===== */
.key-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;margin-top:8px;}
.key-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 26px;box-shadow:var(--shadow-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s ease;
}
.key-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(14,91,84,.28);}
.key-cards > .key-card:nth-child(2){margin-top:24px;}
.key-cards > .key-card:nth-child(3){margin-top:48px;}
.key-card h3{font-size:19px;line-height:1.45;}
.key-card p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink-2);}
.key-card .tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;margin-bottom:14px;
  border-radius:var(--radius-pill);background:var(--accent-soft);color:#8A5A10;font-size:12px;font-weight:600;
}

/* ===== 转换区 ===== */
.convert{
  background:var(--brand-tint);border-top:1px solid var(--line);
  padding:88px 0;text-align:center;
}
.convert h2{font-size:clamp(24px,2.8vw,34px);line-height:1.35;}
.convert p{margin:18px auto 0;max-width:660px;font-size:16.5px;line-height:1.85;color:var(--ink-2);}
.convert-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:32px;}

/* ===== 页脚 ===== */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.78);padding:80px 0 0;margin-top:0;}
.site-footer a{color:rgba(255,255,255,.78);}
.site-footer a:hover{color:#fff;text-decoration:underline;}
.footer-grid{display:grid;grid-template-columns:1.4fr 2.2fr 1fr;gap:48px;}
.footer-about .brand{color:#fff;margin-bottom:18px;}
.footer-about .brand-text{color:#fff;}
.footer-about p{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.72);max-width:380px;}
.socials{display:flex;gap:12px;margin-top:22px;}
.socials a{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.22);border-radius:10px;transition:background-color .2s ease,border-color .2s ease;
}
.socials a:hover{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.5);text-decoration:none;}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.footer-cols h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.02em;}
.footer-cols ul{display:grid;gap:10px;}
.footer-cols li a{font-size:14px;}
.footer-sub h4{color:#fff;font-size:15px;margin-bottom:14px;}
.footer-sub p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);margin-bottom:16px;}
.sub-form{display:flex;gap:10px;flex-wrap:wrap;}
.sub-form input[type="email"]{
  flex:1 1 150px;min-width:0;height:44px;padding:0 14px;border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.06);color:#fff;font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.sub-form input[type="email"]::placeholder{color:rgba(255,255,255,.5);}
.sub-form input[type="email"]:focus{border-color:var(--accent);background:rgba(255,255,255,.1);box-shadow:0 0 0 3px rgba(228,154,47,.2);}
.sub-form .btn{min-height:44px;padding:0 18px;background:var(--accent);border-color:var(--accent);color:#2A1B04;}
.sub-form .btn:hover{background:#D28C22;border-color:#D28C22;color:#2A1B04;}
.footer-bottom{
  margin-top:64px;border-top:1px solid rgba(255,255,255,.14);
  padding:24px 0 32px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.6);
}
.footer-bottom-links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:#fff;}

/* ===== 浮动 CTA / 吸底条 ===== */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;height:48px;padding:0 22px;
  background:var(--brand);color:#fff;border-radius:var(--radius-pill);font-size:15px;font-weight:600;
  box-shadow:0 14px 32px rgba(9,60,56,.26);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .28s ease,transform .28s var(--ease),visibility .28s ease,background-color .2s ease;
}
.float-cta:hover{background:var(--brand-hover);color:#fff;transform:translateY(-2px);}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta.is-visible:hover{transform:translateY(-2px);}
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  align-items:center;justify-content:space-between;gap:12px;
  height:60px;padding:0 16px calc(0px + env(safe-area-inset-bottom,0px));
  background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 18px rgba(20,24,26,.06);
}
.sticky-bar span{font-size:13.5px;font-weight:600;color:var(--ink);}
.sticky-bar .btn{min-height:38px;padding:0 16px;font-size:14px;}

/* ===== 入场动效 ===== */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-in{opacity:1;transform:translateY(0);transition:opacity .5s var(--ease),transform .5s var(--ease);}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal,.reveal.is-in{opacity:1;transform:none;transition:none;}
  .alt-media img{transition:none;}
}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .alt-row{gap:40px;}
}
@media (max-width:1023px){
  .main-nav,.cmd-search{display:none;}
  .burger{display:inline-flex;}
  .nav-login{display:none;}
  .section{padding:72px 0;}
  .cat-hero{padding:40px 0 8px;}
  .alt-row,.alt-row.is-reverse{grid-template-columns:1fr;gap:24px;}
  .alt-row.is-reverse .alt-text{order:1;}
  .alt-row.is-reverse .alt-media{order:2;}
  .alt-media{aspect-ratio:3/2;}
  .key-cards{grid-template-columns:1fr;gap:20px;}
  .key-cards > .key-card:nth-child(2),.key-cards > .key-card:nth-child(3){margin-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .footer-sub{grid-column:1 / -1;}
}
@media (max-width:767px){
  body{padding-bottom:76px;font-size:16px;}
  .container{padding:0 20px;}
  .nav-wrap{height:64px;gap:12px;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .alt-row{padding:44px 0;}
  .cat-banner{aspect-ratio:16/9;margin-top:28px;}
  .cat-hero h1{font-size:clamp(26px,7vw,34px);}
  .convert{padding:60px 0;}
  .convert-actions .btn{width:100%;}
  .float-cta{display:none;}
  .sticky-bar{display:flex;}
  .footer-grid{grid-template-columns:1fr;gap:36px;}
  .footer-cols{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-bottom{flex-direction:column;justify-content:flex-start;}
}
@media (max-width:520px){
  .footer-cols{grid-template-columns:1fr;}
  .btn{padding:0 18px;font-size:14.5px;}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root{
  --brand:#0E5B54;
  --brand-deep:#093C38;
  --brand-dark:#0B2B28;
  --brand-tint:#E4EFED;
  --accent:#E49A2F;
  --accent-soft:#F6E7CE;
  --accent-ink:#8A5A12;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --ink:#14181A;
  --ink-2:#4B5457;
  --line:rgba(20,24,26,.10);
  --danger:#B4472E;
  --r-card:16px;
  --r-btn:10px;
  --r-badge:999px;
  --r-img:20px;
  --sh-1:0 1px 2px rgba(20,24,26,.06);
  --sh-2:0 14px 36px rgba(20,24,26,.10);
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:40px; --sp-5:64px; --sp-6:96px; --sp-7:128px;
  --maxw:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;padding:0;
  background:var(--bg);color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;line-height:1.85;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img,svg{max-width:100%}
img{display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:700;color:var(--ink);letter-spacing:-.01em;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
code,kbd,pre,samp{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::selection{background:var(--brand-tint);color:var(--ink)}
/* ============ 容器 ============ */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding-left:24px;padding-right:24px}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:0;
  border:1px solid transparent;cursor:pointer;background:transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:#0B4A44;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
  border-bottom:1px solid transparent;transition:border-color .22s var(--ease),color .22s var(--ease);
}
.link-more:hover{border-bottom-color:var(--accent);color:var(--brand-deep)}
/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;font-size:16px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.brand-mark{width:24px;height:24px;flex:none;color:var(--brand)}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:26px;margin-right:auto}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:15px;color:var(--ink-2);transition:color .2s var(--ease)}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;border-radius:2px;
  background:var(--brand);transition:width .26s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{width:100%}
.nav-tools{display:flex;align-items:center;gap:14px;flex:none}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:240px;height:38px;padding:0 12px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--surface);transition:width .28s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cmd-search:focus-within{width:320px;border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,91,84,.10)}
.cmd-search>svg{width:16px;height:16px;flex:none;color:var(--ink-2)}
.cmd-search input{
  flex:1;min-width:0;height:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);
}
.cmd-search input::placeholder{color:rgba(75,84,87,.7)}
.cmd-search input::-webkit-search-cancel-button{display:none}
.cmd-kbd{flex:none;font-size:11px;color:var(--ink-2);border:1px solid var(--line);border-radius:6px;padding:1px 6px;background:var(--bg)}
.cmd-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;padding:14px;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.cmd-search:focus-within .cmd-panel{opacity:1;visibility:visible;transform:none}
.cmd-panel span{display:block;font-size:12px;color:var(--ink-2);margin-bottom:10px}
.cmd-tags{display:flex;flex-wrap:wrap;gap:8px}
.cmd-tags b{font-weight:500;font-size:12px;color:var(--brand);background:var(--brand-tint);border-radius:var(--r-badge);padding:4px 10px}
.nav-login{font-size:15px;color:var(--ink-2);padding:6px 2px}
.nav-login:hover{color:var(--brand)}
.nav-cta{min-height:40px;padding:0 18px;font-size:14px}
.burger{
  display:none;width:44px;height:44px;flex:none;
  align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);background:var(--surface);
}
.burger span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.burger span::before{top:-6px}
.burger span::after{top:6px}
/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:90;display:flex;flex-direction:column;gap:24px;
  padding:20px 20px 40px;background:var(--bg);overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--surface);color:var(--ink);font-size:22px;line-height:1;
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{padding:15px 0;font-size:21px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line);transition:color .2s var(--ease),padding-left .2s var(--ease)}
.drawer-nav a:hover{color:var(--brand);padding-left:6px}
.drawer-search input{
  width:100%;height:48px;padding:0 16px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--surface);outline:none;font-size:15px;color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.drawer-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,91,84,.10)}
.drawer-cta{width:100%}
/* ============ 阅读进度 ============ */
.progress{
  position:fixed;top:0;left:0;z-index:80;height:2px;width:0;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transition:width .12s linear;
}
/* ============ 面包屑 ============ */
.breadcrumb{padding:24px 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;font-size:14px;color:var(--ink-2)}
.breadcrumb li{display:inline-flex;align-items:center;min-width:0}
.breadcrumb li+li::before{content:"/";margin:0 10px;color:rgba(20,24,26,.28)}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.crumb-current{max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink-2)}
/* ============ 文章页头 ============ */
.page-main{padding-bottom:var(--sp-6)}
.article-head{max-width:860px;padding:4px 0 32px}
.article-head h1{font-size:clamp(32px,4.2vw,40px);line-height:1.34;font-weight:800;letter-spacing:-.01em}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;font-size:13px;color:var(--ink-2)}
.post-meta .dot{color:rgba(20,24,26,.3)}
.badge-cat{
  display:inline-flex;align-items:center;padding:3px 12px;
  background:var(--accent-soft);color:var(--accent-ink);
  border-radius:var(--r-badge);font-size:12px;font-weight:600;line-height:1.7;
}
.post-cover{
  margin:0 0 var(--sp-4);
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(135deg,var(--bg),var(--accent-soft));
  aspect-ratio:21/9;
}
.post-cover img{width:100%;height:100%;object-fit:cover}
/* ============ 文章布局 ============ */
.article-layout.grid-x{margin-left:-14px;margin-right:-14px}
.article-layout>.cell{padding-left:14px;padding-right:14px}
.article-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-img);
  padding:48px;box-shadow:var(--sh-1);
}
/* ============ 正文排版 ============ */
.article-content{font-size:17px;line-height:1.9;color:var(--ink);word-break:break-word}
.article-content p{margin:0 0 1.1em}
.article-content h2{
  position:relative;font-size:24px;line-height:1.5;margin:48px 0 16px;padding-left:16px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.32em;width:3px;height:18px;border-radius:2px;background:var(--brand);
}
.article-content h3{font-size:19px;margin:32px 0 12px}
.article-content h4{font-size:17px;margin:24px 0 10px;color:var(--brand-deep)}
.article-content ul,.article-content ol{margin:0 0 1.1em;padding-left:1.4em}
.article-content ul li{list-style:disc;margin-bottom:8px}
.article-content ol li{list-style:decimal;margin-bottom:8px}
.article-content a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:var(--accent-ink)}
.article-content strong{font-weight:700}
.article-content blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--accent);
  background:rgba(228,154,47,.06);border-radius:0 12px 12px 0;color:var(--ink-2);
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{border-radius:var(--r-card);margin:24px auto}
.article-content figure{margin:24px 0}
.article-content figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:10px}
.article-content hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-content table{width:100%;border-collapse:collapse;font-size:15px;margin:20px 0}
.article-content th,.article-content td{border:1px solid var(--line);padding:12px;text-align:left}
.article-content th{background:var(--bg);font-weight:600}
.article-content pre{
  background:var(--bg);border:1px solid var(--line);border-radius:12px;
  padding:16px;overflow-x:auto;font-size:14px;line-height:1.7;margin:20px 0;
}
.article-content code{background:var(--bg);border-radius:6px;padding:1px 6px;font-size:.92em}
.article-content pre code{background:transparent;padding:0}
/* ============ 空内容 ============ */
.empty-content{text-align:center;padding:56px 20px}
.empty-icon{width:64px;height:64px;margin:0 auto 18px;color:var(--brand);opacity:.7}
.empty-content h2{font-size:22px;margin-bottom:10px}
.empty-content p{font-size:15px;color:var(--ink-2);margin-bottom:24px}
/* ============ 侧栏 ============ */
.side-inner{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1)}
.side-card h3{font-size:16px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.side-list li+li{margin-top:16px;padding-top:16px;border-top:1px dashed var(--line)}
.side-list a{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.6}
.side-list a:hover{color:var(--brand)}
.side-list span{display:block;margin-top:6px;font-size:12px;line-height:1.7;color:var(--ink-2)}
.side-note{font-size:13px;line-height:1.8;color:var(--ink-2);margin-bottom:16px}
/* ============ 标签行 ============ */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}
.tag-row .tag-label{font-size:13px;color:var(--ink-2);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border-radius:var(--r-badge);background:var(--brand-tint);color:var(--brand);
  font-size:13px;transition:background .2s var(--ease),color .2s var(--ease);
}
.tag:hover{background:var(--brand);color:#fff}
/* ============ 相关推荐 ============ */
.section-block{margin-top:var(--sp-6)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:clamp(24px,2.8vw,30px)}
.section-head p{font-size:14px;color:var(--ink-2);margin-top:8px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.rel-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,var(--bg),var(--accent-soft))}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.rel-body h3{font-size:17px;line-height:1.5;margin-bottom:10px}
.rel-body p{font-size:14px;line-height:1.75;color:var(--ink-2);flex:1}
.rel-meta{display:flex;align-items:center;justify-content:space-between;margin-top:14px;font-size:12px;color:var(--ink-2)}
.rel-meta .arrow{color:var(--brand);font-weight:600}
/* ============ 上下篇 + 返回 ============ */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
.post-nav-item{
  display:flex;flex-direction:column;gap:6px;padding:20px 22px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.post-nav-item:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-1)}
.post-nav-item small{font-size:12px;color:var(--ink-2)}
.post-nav-item span{font-size:15px;font-weight:600;color:var(--ink)}
.back-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
/* ============ 转换区 ============ */
.cta-strip{
  margin-top:var(--sp-6);padding:44px 48px;border-radius:var(--r-img);
  background:var(--brand-tint);border:1px solid rgba(14,91,84,.10);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-strip h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:10px}
.cta-strip p{font-size:15px;color:var(--ink-2);max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
/* ============ 浮动 CTA / 移动底栏 ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none}
.float-cta a{
  display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 22px;
  border-radius:var(--r-badge);background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--sh-2);transition:background .22s var(--ease),transform .22s var(--ease);
}
.float-cta a:hover{background:#0B4A44;transform:translateY(-2px)}
.float-cta svg{width:18px;height:18px}
.mobile-bar{display:none}
/* ============ 页脚 ============ */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.78);padding-top:72px;margin-top:var(--sp-6)}
.site-footer .brand{color:#fff}
.site-footer .brand-mark{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.3fr 2fr 1.1fr;gap:48px;padding-bottom:48px}
.footer-about p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.7);margin-top:16px;max-width:360px}
.socials{display:flex;gap:12px;margin-top:20px}
.socials a{
  width:36px;height:36px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.18);
  display:inline-flex;align-items:center;justify-content:center;color:rgba(255,255,255,.8);
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.socials a:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.36)}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.footer-cols h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer-cols li+li{margin-top:10px}
.footer-cols a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-cols a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-sub h4{font-size:15px;color:#fff;margin-bottom:12px}
.footer-sub p{font-size:13px;line-height:1.8;color:rgba(255,255,255,.68)}
.sub-form{display:flex;gap:10px;margin-top:16px}
.sub-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06);color:#fff;
  font-size:14px;outline:none;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.sub-form input::placeholder{color:rgba(255,255,255,.45)}
.sub-form input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(228,154,47,.18)}
.sub-form button{
  flex:none;height:44px;padding:0 18px;border:0;border-radius:var(--r-btn);
  background:var(--accent);color:#2C1B04;font-size:14px;font-weight:600;cursor:pointer;
  transition:filter .2s var(--ease),transform .2s var(--ease);
}
.sub-form button:hover{filter:brightness(1.06);transform:translateY(-1px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:12px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.65)}
.footer-bottom a:hover{color:#fff}
/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:100%}
  .main-nav{gap:20px;margin-left:18px}
}
@media (max-width:1023px){
  .main-nav,.cmd-search,.nav-login{display:none}
  .burger{display:inline-flex}
  .nav-wrap{justify-content:space-between}
  .article-layout>.cell.large-8,.article-layout>.cell.large-4{width:100%}
  .side-inner{position:static;margin-top:32px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .footer-sub{grid-column:1 / -1}
  .cta-strip{padding:36px 32px}
}
@media (max-width:767px){
  body{font-size:16px;padding-bottom:88px}
  .container{padding-left:20px;padding-right:20px}
  .breadcrumb{padding:18px 0}
  .crumb-current{max-width:220px}
  .article-head h1{font-size:30px}
  .post-cover{aspect-ratio:3/2;border-radius:var(--r-card)}
  .article-panel{padding:26px 20px 32px;border-radius:var(--r-card)}
  .article-content{font-size:16px;line-height:1.85}
  .article-content h2{font-size:21px;margin-top:36px}
  .article-content h3{font-size:18px}
  .article-content table{display:block;overflow-x:auto;white-space:nowrap}
  .rel-grid{grid-template-columns:1fr;gap:16px}
  .post-nav{grid-template-columns:1fr}
  .cta-strip{padding:28px 20px;flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-cols{grid-template-columns:repeat(2,1fr);gap:24px}
  .site-footer{padding-top:56px}
  .float-cta{display:none}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;
    align-items:center;justify-content:space-between;gap:12px;
    min-height:60px;padding:10px 20px calc(10px + env(safe-area-inset-bottom));
    background:#fff;border-top:1px solid var(--line);
  }
  .mobile-bar span{font-size:13px;color:var(--ink-2);line-height:1.5}
  .mobile-bar .btn{min-height:42px;padding:0 16px;font-size:14px;flex:none}
  .back-row .btn{flex:1}
}
@media (max-width:520px){
  .article-head h1{font-size:26px}
  .cmd-panel{display:none}
  .footer-cols{grid-template-columns:1fr}
  .sub-form{flex-direction:column}
  .sub-form button{width:100%}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root{
  --brand:#0E5B54;
  --brand-deep:#093C38;
  --brand-tint:#E4EFED;
  --brand-hover:#0A423C;
  --accent:#E49A2F;
  --accent-soft:#F6E7CE;
  --accent-ink:#8A5A10;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --ink:#14181A;
  --ink-2:#4B5457;
  --line:rgba(20,24,26,.10);
  --danger:#B4472E;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:999px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(20,24,26,.06);
  --sh-2:0 14px 36px rgba(20,24,26,.10);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:40px;
  --sp-5:64px;
  --sp-6:96px;
  --sp-7:128px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}

/* ===== 基础 reset / base ===== */
*,*::before,*::after{box-sizing:border-box}
html{
  scroll-behavior:smooth;
  scroll-padding-top:88px;
  -webkit-text-size-adjust:100%;
}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-hover)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::selection{background:var(--brand-tint);color:var(--brand-deep)}

h1{font-size:clamp(32px,4.4vw,52px);line-height:1.24;letter-spacing:-.01em;font-weight:800}
h2{font-size:clamp(25px,2.9vw,36px);line-height:1.32;letter-spacing:-.01em;font-weight:800}
h3{font-size:clamp(19px,1.6vw,23px);line-height:1.45;letter-spacing:-.01em;font-weight:700}
h4{font-size:16px;line-height:1.5;font-weight:700}
p{margin-bottom:1.1em}
p:last-child{margin-bottom:0}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ===== 容器与栅格（覆盖 Foundation 默认 gutter） ===== */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.grid-x{
  display:flex;
  flex-wrap:wrap;
  margin-left:-12px;
  margin-right:-12px;
}
.grid-x > .cell{
  flex:0 0 auto;
  width:100%;
  padding-left:12px;
  padding-right:12px;
  min-width:0;
}
@media (min-width:768px){
  .cell-md-4{width:33.3333%}
  .cell-md-6{width:50%}
  .cell-md-8{width:66.6667%}
  .cell-md-12{width:100%}
}
@media (min-width:1024px){
  .cell-lg-3{width:25%}
  .cell-lg-4{width:33.3333%}
  .cell-lg-5{width:41.6667%}
  .cell-lg-6{width:50%}
  .cell-lg-7{width:58.3333%}
  .cell-lg-8{width:66.6667%}
}
.align-middle{align-items:center}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  border:1px solid transparent;
  text-transform:none;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;color:var(--brand);border-color:rgba(14,91,84,.32)}
.btn-ghost:hover{background:var(--brand-tint);color:var(--brand-deep);border-color:var(--brand);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--brand-deep)}
.btn-light:hover{background:#fff;color:var(--brand-deep);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn .arrow{transition:transform .22s var(--ease)}
.btn:hover .arrow{transform:translateX(3px)}

/* 覆盖 Foundation 默认按钮皮肤 */
.button,
button.button{
  background-color:var(--brand);
  color:#fff;
  border-radius:var(--r-btn);
  text-transform:none;
  font-weight:600;
}
.button:hover,button.button:hover{background-color:var(--brand-hover);color:#fff}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:68px;
  display:flex;
  align-items:center;
  background:rgba(247,246,242,0);
  border-bottom:1px solid transparent;
  transition:background-color .28s var(--ease),border-color .28s var(--ease),backdrop-filter .28s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:saturate(150%) blur(12px);
  backdrop-filter:saturate(150%) blur(12px);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  flex:0 0 auto;
}
.brand:hover{color:var(--brand)}
.brand-mark{
  width:24px;
  height:24px;
  color:var(--brand);
  flex:0 0 auto;
}
.brand-text{
  font-size:16px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  flex:1 1 auto;
  justify-content:center;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:14px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:8px;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-tools{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.cmd-search{
  position:relative;
  display:flex;
  align-items:center;
  width:240px;
  height:38px;
  padding:0 10px 0 34px;
  border:1px solid var(--line);
  border-radius:var(--r-input);
  background:var(--surface);
  transition:width .28s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cmd-search svg{
  position:absolute;
  left:11px;
  top:50%;
  transform:translateY(-50%);
  width:16px;
  height:16px;
  color:var(--ink-2);
}
.cmd-search input{
  width:100%;
  border:0;
  background:transparent;
  font-size:14px;
  outline:none;
  min-height:auto;
  height:34px;
  padding:0;
  margin:0;
  box-shadow:none;
}
.cmd-search input:focus{box-shadow:none}
.cmd-search input::placeholder{color:#8C9496}
.cmd-kbd{
  flex:0 0 auto;
  margin-left:8px;
  padding:1px 7px;
  font-size:12px;
  color:var(--ink-2);
  border:1px solid var(--line);
  border-radius:6px;
  background:var(--bg);
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.cmd-search:focus-within{
  width:320px;
  border-color:var(--brand);
  box-shadow:0 0 0 2px rgba(14,91,84,.18);
}
.cmd-panel{
  position:absolute;
  top:46px;
  left:0;
  right:0;
  padding:14px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
  opacity:0;
  visibility:hidden;
  transform:translateY(-6px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.cmd-search:focus-within .cmd-panel{opacity:1;visibility:visible;transform:translateY(0)}
.cmd-panel > span{display:block;font-size:12px;color:var(--ink-2);margin-bottom:8px}
.cmd-tags{display:flex;flex-wrap:wrap;gap:8px}
.cmd-tags b{
  font-weight:500;
  font-size:13px;
  padding:4px 10px;
  border-radius:var(--r-badge);
  background:var(--brand-tint);
  color:var(--brand-deep);
}
.nav-login{
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  padding:10px 8px;
}
.nav-login:hover{color:var(--brand)}
.nav-cta{min-height:40px;padding:0 18px;font-size:14px}
.burger{
  display:none;
  width:44px;
  height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:var(--surface);
  position:relative;
}
.burger span,
.burger span::before,
.burger span::after{
  position:absolute;
  left:12px;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--ink);
  transition:transform .24s var(--ease),opacity .2s var(--ease);
}
.burger span{top:50%;margin-top:-1px}
.burger span::before{content:"";left:0;top:-6px}
.burger span::after{content:"";left:0;top:6px}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:80;
  background:var(--surface);
  padding:24px 20px 32px;
  transform:translateY(-100%);
  transition:transform .34s var(--ease);
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateY(0)}
.drawer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:28px;
}
.drawer-close{
  width:44px;
  height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  font-size:20px;
  line-height:1;
  color:var(--ink-2);
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:28px}
.drawer-nav a{
  font-size:22px;
  font-weight:700;
  color:var(--ink);
  padding:14px 0;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand)}
.drawer-search{
  width:100%;
  height:44px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-input);
  background:var(--bg);
  margin-bottom:18px;
}
.drawer-search:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(14,91,84,.18)}

/* ===== 通用板块 ===== */
.sec{padding:96px 0}
.sec-tight{padding:72px 0}
.sec-surface{background:var(--surface)}
.sec-tint{background:var(--brand-tint)}
.sec-line{border-top:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{margin-bottom:14px}
.sec-head p{font-size:16px;color:var(--ink-2);line-height:1.9}
.eyebrow{
  display:inline-block;
  margin-bottom:14px;
  padding:5px 14px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--brand-deep);
  background:var(--brand-tint);
  border-radius:var(--r-badge);
}
.badge-accent{
  display:inline-block;
  padding:3px 12px;
  font-size:12px;
  font-weight:700;
  color:var(--accent-ink);
  background:var(--accent-soft);
  border-radius:var(--r-badge);
}

/* ===== 面包屑 ===== */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:24px 0 8px;
  font-size:14px;
  color:var(--ink-2);
}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(20,24,26,.3)}
.breadcrumb .current{color:var(--ink-2)}

/* ===== 分类页头 ===== */
.cat-hero{padding-bottom:72px}
.cat-hero-head{max-width:820px;margin:20px 0 40px}
.cat-hero-head h1{margin-bottom:20px}
.cat-hero-head .lead{
  font-size:17px;
  color:var(--ink-2);
  line-height:1.9;
  max-width:680px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.metric-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px 40px;
  margin-top:36px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.metric-row li{display:flex;flex-direction:column;gap:2px}
.metric-row .m-num{
  font-size:22px;
  font-weight:800;
  color:var(--brand);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.metric-row .m-desc{font-size:13px;color:var(--ink-2)}
.wide-figure{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  aspect-ratio:21/9;
  background:linear-gradient(135deg,var(--bg),var(--accent-soft));
}
.wide-figure img{width:100%;height:100%;object-fit:cover}
.wide-figure::after{
  content:"";
  position:absolute;
  inset:0;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  pointer-events:none;
}

/* ===== 流程条 ===== */
.flow-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  position:relative;
}
.flow-step{
  position:relative;
  padding:0 24px 0 0;
}
.flow-step::before{
  content:"";
  position:absolute;
  top:20px;
  left:52px;
  right:12px;
  height:1px;
  background:var(--line);
}
.flow-step:last-child::before{display:none}
.flow-index{
  position:relative;
  z-index:1;
  width:40px;
  height:40px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--surface);
  border:1px solid var(--brand);
  color:var(--brand);
  font-size:15px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  margin-bottom:20px;
}
.flow-step h3{font-size:19px;margin-bottom:10px}
.flow-step p{font-size:14px;color:var(--ink-2);line-height:1.8;margin-bottom:6px}

/* ===== 对比卡 ===== */
.compare-grid{margin-top:8px}
.plan-card{
  position:relative;
  display:flex;
  flex-direction:column;
  height:100%;
  padding:32px 26px 30px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:box-shadow .26s var(--ease),transform .26s var(--ease),border-color .26s var(--ease);
}
.plan-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.plan-card.is-featured{
  border-color:var(--brand);
  border-top:4px solid var(--brand);
  box-shadow:var(--sh-2);
  padding-top:38px;
}
.plan-badge{
  position:absolute;
  top:-13px;
  right:24px;
  padding:3px 12px;
  font-size:12px;
  font-weight:700;
  color:var(--accent-ink);
  background:var(--accent-soft);
  border-radius:var(--r-badge);
}
.plan-name{font-size:21px;font-weight:800;margin-bottom:8px}
.plan-for{font-size:14px;color:var(--ink-2);line-height:1.8;margin-bottom:22px;min-height:50px}
.plan-list{display:flex;flex-direction:column;gap:0;margin-bottom:28px;flex:1 1 auto}
.plan-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:11px 0;
  font-size:14px;
  line-height:1.7;
  color:var(--ink);
  border-bottom:1px solid var(--line);
}
.plan-list li:last-child{border-bottom:0}
.plan-list .k{flex:0 0 84px;color:var(--ink-2)}
.plan-list .v{flex:1 1 auto}
.mark{flex:0 0 auto;width:18px;height:18px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;line-height:1;margin-top:3px}
.mark-yes{background:var(--brand-tint);color:var(--brand)}
.mark-no{background:#EFEFEC;color:#9AA0A2}
.plan-card .btn{width:100%}

/* ===== 场景图文 ===== */
.scene-list{display:flex;flex-direction:column;gap:16px;margin-top:26px}
.scene-list li{
  display:flex;
  gap:14px;
  padding:16px 18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.scene-list li:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.scene-list .dot{
  flex:0 0 auto;
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--brand);
  margin-top:11px;
}
.scene-list h3{font-size:17px;margin-bottom:6px}
.scene-list p{font-size:14px;color:var(--ink-2);line-height:1.8}
.media-frame{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  aspect-ratio:4/3;
  background:linear-gradient(135deg,var(--bg),var(--accent-soft));
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.media-frame:hover img{transform:scale(1.03)}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  pointer-events:none;
}

/* ===== 权益要点清单 ===== */
.point-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px 40px;
  margin-top:8px;
}
.point-item{
  display:flex;
  gap:12px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
}
.point-item .p-index{
  flex:0 0 auto;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;
  font-weight:700;
  color:var(--brand);
  padding-top:2px;
}
.point-item h3{font-size:17px;margin-bottom:6px}
.point-item p{font-size:14px;color:var(--ink-2);line-height:1.8}

/* ===== FAQ ===== */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:72px;
  padding:18px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:16px;
  height:16px;
  transition:transform .25s var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  opacity:0;
  transition:max-height .34s var(--ease),opacity .3s var(--ease);
}
.faq-item.is-open .faq-a{max-height:420px;opacity:1}
.faq-a p{
  padding:0 0 22px;
  margin:0;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}

/* ===== 转换区 ===== */
.convert-inner{
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
  gap:18px;
}
.convert-inner h2{max-width:720px}
.convert-inner p{max-width:640px;color:var(--ink-2);font-size:16px;line-height:1.9}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:8px}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--brand-deep);
  color:rgba(255,255,255,.78);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 2fr 1.2fr;
  gap:48px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.site-footer .brand{color:#fff;margin-bottom:18px}
.site-footer .brand-mark{color:#fff}
.site-footer .brand-text{color:#fff}
.footer-about p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);max-width:360px}
.socials{display:flex;gap:12px;margin-top:20px}
.socials a{
  width:38px;
  height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.2);
  color:rgba(255,255,255,.8);
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.socials a:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.5)}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.footer-cols h4{
  font-size:15px;
  color:#fff;
  margin-bottom:16px;
  font-weight:700;
}
.footer-cols ul{display:flex;flex-direction:column;gap:10px}
.footer-cols a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-cols a:hover{color:#fff;text-decoration:underline}
.footer-sub h4{font-size:15px;color:#fff;margin-bottom:14px;font-weight:700}
.footer-sub p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin-bottom:16px}
.sub-form{display:flex;flex-direction:column;gap:12px}
.sub-form input{
  height:44px;
  padding:0 14px;
  border-radius:var(--r-input);
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);
  color:#fff;
  font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.sub-form input::placeholder{color:rgba(255,255,255,.5)}
.sub-form input:focus{
  outline:none;
  border-color:var(--brand-tint);
  box-shadow:0 0 0 2px rgba(228,239,237,.28);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:22px 0 28px;
  font-size:12px;
  color:rgba(255,255,255,.6);
}
.footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff;text-decoration:underline}

/* ===== 浮动 CTA ===== */
.float-cta{
  position:fixed;
  right:24px;
  bottom:28px;
  z-index:70;
  display:inline-flex;
  align-items:center;
  gap:10px;
  height:48px;
  padding:0 22px;
  border-radius:var(--r-badge);
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:600;
  box-shadow:0 10px 26px rgba(9,60,56,.26);
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s,background-color .2s var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:var(--brand-hover);color:#fff}
.mobile-bar{display:none}

/* ===== 入场动效 ===== */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.reveal.in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .sec{padding:88px 0}
  .flow-step{padding-right:16px}
}
@media (max-width:1023px){
  .main-nav,
  .cmd-search,
  .nav-login{display:none}
  .burger{display:block}
  .sec{padding:72px 0}
  .flow-row{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .flow-step::before{display:none}
  .footer-grid{grid-template-columns:1fr;gap:40px}
  .footer-cols{grid-template-columns:repeat(3,1fr)}
  .scene-media{margin-top:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .sec{padding:56px 0}
  .sec-head{margin-bottom:32px}
  h1{font-size:clamp(28px,7vw,34px)}
  .cat-hero-head{margin:12px 0 28px}
  .cat-hero-head .lead{font-size:16px}
  .wide-figure{aspect-ratio:16/9}
  .grid-x{margin-left:-8px;margin-right:-8px}
  .grid-x > .cell{padding-left:8px;padding-right:8px}
  .flow-row{grid-template-columns:1fr;gap:28px}
  .metric-row{gap:16px 28px}
  .plan-card{padding:26px 20px}
  .point-grid{grid-template-columns:1fr;gap:0}
  .faq-q{min-height:64px;font-size:16px}
  .footer-cols{grid-template-columns:1fr;gap:28px}
  .float-cta{display:none}
  .mobile-bar{
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    z-index:75;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    min-height:60px;
    padding:0 20px calc(0px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.96);
    border-top:1px solid var(--line);
    box-shadow:0 -6px 20px rgba(20,24,26,.06);
  }
  .mobile-bar .mb-text{font-size:13px;color:var(--ink-2)}
  .mobile-bar .btn{min-height:42px;padding:0 18px;font-size:14px}
  body{padding-bottom:60px}
  .btn{min-height:44px}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --brand:#0E5B54;
  --brand-deep:#093C38;
  --brand-tint:#E4EFED;
  --accent:#E49A2F;
  --accent-soft:#F6E7CE;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --ink:#14181A;
  --ink-2:#4B5457;
  --line:rgba(20,24,26,.10);
  --danger:#B4472E;
  --r-card:16px;
  --r-btn:10px;
  --r-img:20px;
  --sh-1:0 1px 2px rgba(20,24,26,.06);
  --sh-2:0 14px 36px rgba(20,24,26,.10);
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:40px;--sp-5:64px;--sp-6:96px;--sp-7:128px;
  --ff:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ff-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--ff);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-deep)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;letter-spacing:-0.01em;color:var(--ink)}
h1{font-size:clamp(32px,4.4vw,56px)}
h2{font-size:clamp(26px,3vw,38px)}
h3{font-size:clamp(19px,1.6vw,23px)}
h4{font-size:16px}
p{margin:0 0 1.1em;font-size:16px}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.num{font-variant-numeric:tabular-nums;font-family:var(--ff-mono)}

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

/* Foundation 覆盖 */
.grid-x{margin-left:-12px;margin-right:-12px}
.grid-x>.cell{padding-left:12px;padding-right:12px}
.off-canvas-content{background:var(--bg);box-shadow:none}
.off-canvas{background:var(--surface);width:min(88vw,380px);box-shadow:var(--sh-2)}
.button,button{text-transform:none;border-radius:var(--r-btn)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:14.5px;font-weight:600;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;line-height:1.2;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover,.btn-primary:focus-visible{background:#0B4A44;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--brand);border-color:rgba(14,91,84,.34)}
.btn-ghost:hover,.btn-ghost:focus-visible{background:var(--brand-tint);color:var(--brand-deep);border-color:var(--brand);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-arrow::after{content:"→";font-size:15px;line-height:1;transition:transform .2s ease}
.btn-arrow:hover::after{transform:translateX(3px)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand)}
.link-more::after{content:"→";transition:transform .2s ease}
.link-more:hover::after{transform:translateX(3px)}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;border-bottom:1px solid transparent;
  background:transparent;transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom-color:var(--line)}
.nav-wrap{display:flex;align-items:center;gap:22px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:16px;letter-spacing:-0.01em}
.brand:hover{color:var(--brand)}
.brand-mark{width:24px;height:24px;color:var(--brand);flex:none}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:6px}
.nav-link{position:relative;padding:6px 0;font-size:14.5px;color:var(--ink-2)}
.nav-link:hover{color:var(--ink)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:0;bottom:-3px;width:100%;height:2px;background:var(--brand);border-radius:2px}
.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto}
.cmd-search{
  position:relative;display:flex;align-items:center;width:240px;height:38px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 10px 0 34px;transition:width .25s ease,border-color .2s ease,box-shadow .2s ease;
}
.cmd-search>svg{position:absolute;left:11px;width:16px;height:16px;color:var(--ink-2)}
.cmd-search input{width:100%;height:100%;border:0;background:transparent;outline:none;font-size:14px}
.cmd-search input::placeholder{color:#8B9295}
.cmd-kbd{font-family:var(--ff-mono);font-size:11px;color:var(--ink-2);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:2px 6px;flex:none}
.cmd-search:focus-within{width:320px;border-color:var(--brand);box-shadow:0 0 0 2px rgba(14,91,84,.18)}
.cmd-panel{
  position:absolute;top:calc(100% + 8px);left:0;width:100%;z-index:70;
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--sh-2);padding:12px 14px;
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:.2s ease;
}
.cmd-search:focus-within .cmd-panel{opacity:1;visibility:visible;transform:translateY(0)}
.cmd-panel>span{display:block;font-size:12px;color:var(--ink-2);margin-bottom:8px}
.cmd-tags{display:flex;flex-wrap:wrap;gap:6px}
.cmd-tags b{font-size:12px;font-weight:600;color:var(--brand-deep);background:var(--brand-tint);border-radius:999px;padding:3px 10px}
.nav-login{font-size:14.5px;color:var(--ink-2);padding:8px 4px}
.nav-login:hover{color:var(--ink)}
.nav-cta{min-height:38px;padding:0 16px;font-size:14px}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--surface);position:relative;cursor:pointer}
.burger span,.burger span::before,.burger span::after{position:absolute;left:50%;width:18px;height:2px;background:var(--ink);border-radius:2px;transform:translateX(-50%);transition:.2s ease}
.burger span{top:50%;margin-top:-1px}
.burger span::before{content:"";top:-6px;left:0;transform:none}
.burger span::after{content:"";top:6px;left:0;transform:none}
.burger:hover{border-color:var(--brand)}
.burger:hover span,.burger:hover span::before,.burger:hover span::after{background:var(--brand)}

/* 移动抽屉 */
.mobile-nav{padding:28px 24px}
.mobile-nav .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--surface);cursor:pointer;font-size:20px;line-height:1;color:var(--ink-2)}
.drawer-close:hover{color:var(--brand);border-color:var(--brand)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px}
.drawer-nav a{font-size:22px;font-weight:600;color:var(--ink);padding:12px 0;border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--brand)}
.drawer-search{display:flex;align-items:center;gap:10px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 14px;background:var(--bg);margin-bottom:20px}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:15px}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;padding:24px 0 8px;font-size:13.5px;color:var(--ink-2)}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#A9B1B3}
.crumb .cur{color:var(--ink-2)}

/* 分类页头 */
.cat-head{padding:20px 0 0}
.cat-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand);background:var(--brand-tint);border-radius:999px;padding:6px 14px;
}
.cat-title{margin:20px 0 0;max-width:900px}
.cat-sub{margin:18px 0 0;max-width:780px;font-size:17px;color:var(--ink-2);line-height:1.85}
.cat-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--ink-2);background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:6px 14px}
.pill b{color:var(--brand);font-variant-numeric:tabular-nums}
.cat-hero-media{
  position:relative;margin:34px 0 0;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:21/9;background:linear-gradient(135deg,var(--bg),var(--accent-soft));
}
.cat-hero-media img{width:100%;height:100%;object-fit:cover}

/* 板块通用 */
.sec{padding:96px 0}
.sec-tight{padding:72px 0}
.sec-head{max-width:820px;margin-bottom:40px}
.sec-head h2{margin-bottom:32px}
.sec-head .sec-desc{margin:0;color:var(--ink-2);font-size:16.5px;line-height:1.85}
.sec-head h2 + .sec-desc{margin-top:-20px}

/* 卡片墙 */
.wall{padding:88px 0 96px}
.wall-row{margin-bottom:24px}
.wall-row:last-child{margin-bottom:0}
.card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(14,91,84,.28)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,var(--bg),var(--accent-soft))}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.22,.61,.36,1)}
.card:hover .card-media img{transform:scale(1.03)}
.card-media .tag{position:absolute;left:14px;top:14px;background:var(--accent-soft);color:#8A5A10}
.card-body{display:flex;flex-direction:column;gap:12px;padding:26px;flex:1}
.card-body h3{margin:0}
.card-body h3 + p{margin-top:0}
.card-body p{margin:0;font-size:15px;color:var(--ink-2);line-height:1.8}
.card-body .link-more{margin-top:auto;padding-top:6px}
.card-lg .card-body{padding:32px}
.card-lg .card-body p{font-size:15.5px}
.card-lg .card-body h3{font-size:clamp(21px,2vw,26px)}
.card-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:2px}
.card-points li{font-size:12.5px;color:var(--brand-deep);background:var(--brand-tint);border-radius:999px;padding:4px 12px}
.tag{display:inline-flex;align-items:center;font-size:12.5px;font-weight:600;border-radius:999px;padding:4px 11px;background:var(--brand-tint);color:var(--brand-deep);letter-spacing:.01em}

/* 引用块 */
.quote-col{position:sticky;top:96px}
.quote{
  background:var(--surface);border-left:3px solid var(--accent);
  border-radius:0 14px 14px 0;padding:24px;box-shadow:var(--sh-1);
}
.quote p{font-size:15px;line-height:1.85;color:var(--ink);margin:0 0 16px}
.quote-by{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--ink-2);line-height:1.5}
.quote-avatar{
  width:40px;height:40px;border-radius:50%;flex:none;
  background:linear-gradient(135deg,var(--brand-tint),var(--accent-soft));
  display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--brand-deep);font-size:13px;
}
.quote-note{margin-top:18px;font-size:13px;color:var(--ink-2);background:var(--brand-tint);border-radius:12px;padding:14px 16px;line-height:1.75}

/* 要点清单（白底整宽） */
.band{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:88px 0}
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 48px}
.check-list li{position:relative;padding-left:28px;font-size:15.5px;color:var(--ink-2);line-height:1.75}
.check-list li::before{content:"";position:absolute;left:0;top:5px;width:16px;height:16px;border-radius:5px;background:var(--brand-tint);border:1px solid rgba(14,91,84,.28)}
.check-list li::after{
  content:"";position:absolute;left:5px;top:9px;width:6px;height:3px;
  border-left:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(-45deg);
}

/* 支持通道 */
.channels{padding:88px 0}
.channel-list{border-top:1px solid var(--line)}
.channel-list li{
  display:grid;grid-template-columns:48px minmax(0,1fr) auto;gap:22px;align-items:center;
  padding:26px 0;border-bottom:1px solid var(--line);transition:background .2s ease;
}
.channel-list li:hover{background:rgba(14,91,84,.03)}
.ch-icon{width:48px;height:48px;border-radius:12px;background:var(--brand-tint);display:flex;align-items:center;justify-content:center;color:var(--brand)}
.ch-icon svg{width:22px;height:22px}
.ch-text h3{margin:0 0 4px;font-size:18px}
.ch-text p{margin:0;font-size:14.5px;color:var(--ink-2);line-height:1.75}
.ch-meta{font-size:12.5px;color:var(--brand-deep);background:var(--accent-soft);border-radius:999px;padding:5px 12px;white-space:nowrap;font-weight:600}

/* 转换区 */
.convert{background:var(--brand-tint);padding:88px 0}
.convert-inner{max-width:820px}
.convert h2{margin-bottom:16px}
.convert p{margin:0;color:var(--ink-2);font-size:16.5px}
.convert-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* 页脚 */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.78);padding:72px 0 0;margin-top:0}
.site-footer a{color:rgba(255,255,255,.78)}
.site-footer a:hover{color:#fff;text-decoration:underline}
.footer-grid{display:grid;grid-template-columns:1.25fr 1.9fr 1.05fr;gap:48px}
.footer-about .brand{color:#fff;margin-bottom:18px}
.footer-about .brand-mark{color:#fff}
.footer-about p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);margin:0}
.socials{display:flex;gap:10px;margin-top:20px}
.socials a{width:38px;height:38px;border:1px solid rgba(255,255,255,.22);border-radius:10px;display:flex;align-items:center;justify-content:center;transition:.2s ease}
.socials a:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5)}
.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.footer-cols h4{color:#fff;font-size:15px;margin:0 0 16px}
.footer-cols ul li{margin-bottom:10px}
.footer-cols ul a{font-size:14px}
.footer-sub h4{color:#fff;font-size:15px;margin:0 0 12px}
.footer-sub p{font-size:13.5px;color:rgba(255,255,255,.7);margin:0 0 16px;line-height:1.7}
.sub-form{display:flex;gap:8px}
.sub-form input{
  flex:1;min-width:0;height:44px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.06);
  color:#fff;padding:0 14px;font-size:14px;outline:none;transition:.2s ease;
}
.sub-form input::placeholder{color:rgba(255,255,255,.5)}
.sub-form input:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(228,154,47,.22)}
.sub-form .btn{min-height:44px;padding:0 18px}
.sub-note{font-size:12.5px;color:rgba(255,255,255,.55);margin:12px 0 0}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:56px;padding:22px 0;border-top:1px solid rgba(255,255,255,.14);
  font-size:12.5px;color:rgba(255,255,255,.6);
}
.footer-bottom p{margin:0;font-size:12.5px}
.footer-bottom .dot{margin:0 8px;color:rgba(255,255,255,.35)}

/* 入场动效 */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1)}
.js .reveal.is-in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1279px){
  .sec{padding:88px 0}
  .wall{padding:80px 0 88px}
  .band,.channels,.convert{padding:80px 0}
  .footer-grid{gap:36px}
}
@media (max-width:1023px){
  .main-nav,.cmd-search{display:none}
  .burger{display:block}
  .nav-wrap{gap:12px}
  .cat-hero-media{aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .footer-about{grid-column:1 / -1}
  .footer-sub{grid-column:1 / -1}
  .quote-col{position:static;margin-top:24px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .sec,.wall,.band,.channels,.convert{padding:56px 0}
  .cat-head{padding:12px 0 0}
  .cat-hero-media{aspect-ratio:3/2;margin-top:26px}
  .cat-sub{font-size:16px}
  body{font-size:16px}
  .grid-x{margin-left:-8px;margin-right:-8px}
  .grid-x>.cell{padding-left:8px;padding-right:8px}
  .wall-row{margin-bottom:16px}
  .check-list{grid-template-columns:1fr;gap:12px}
  .channel-list li{grid-template-columns:44px minmax(0,1fr);gap:16px;align-items:start}
  .ch-meta{grid-column:2;justify-self:start}
  .convert-actions .btn{flex:1 1 100%}
  .footer-cols{grid-template-columns:1fr 1fr;gap:20px}
  .sub-form{flex-wrap:wrap}
  .sub-form input{flex:1 1 100%}
  .sub-form .btn{width:100%}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .cat-title{font-size:clamp(28px,8vw,34px)}
  .footer-cols{grid-template-columns:1fr}
  .pill{font-size:12.5px}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .js .reveal{opacity:1!important;transform:none!important}
}