/* roulang page: index */
:root{
  --c-bg:#F5F7F4;--c-surface:#FFFFFF;--c-surface-2:#EEF2EE;
  --c-ink:#101A16;--c-ink-2:#44554D;--c-muted:#7C8A83;--c-line:#E2E8E3;
  --c-primary:#00BE8A;--c-primary-d:#0AA173;--c-primary-soft:rgba(0,190,138,.10);
  --c-accent:#FF6A3D;--c-accent-d:#E8551F;
  --c-dark:#0C1512;--c-dark-2:#14241F;--c-dark-line:rgba(255,255,255,.10);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate",ui-monospace,Consolas,monospace;
  --sh-1:0 1px 2px rgba(16,26,22,.06),0 8px 24px rgba(16,26,22,.06);
  --sh-2:0 12px 32px rgba(16,26,22,.10);
  --nav-w:260px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.8;color:var(--c-ink);background:var(--c-bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-ink);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease}
a:hover{color:var(--c-primary-d)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(0,190,138,.35);outline-offset:2px}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px}
.sec-title{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-0.01em}
.sec-desc{margin-top:12px;font-size:16px;color:var(--c-ink-2);max-width:760px}
.sec-link{font-size:15px;font-weight:600;color:var(--c-primary-d);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.sec-link::after{content:"→";transition:transform .2s ease}
.sec-link:hover::after{transform:translateX(3px)}
.section{padding:88px 0}
.section-surface{background:var(--c-surface)}
.section-line{border-top:1px solid var(--c-line)}
.label{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--c-primary-d);background:var(--c-primary-soft);border-radius:999px;padding:4px 12px;margin-bottom:16px}

/* ============ 按钮体系 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:10px;font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;background:none;box-shadow:none;transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--c-primary);color:#06231B;border-color:var(--c-primary)}
.btn-primary:hover,.btn-primary:focus{background:var(--c-primary-d);border-color:var(--c-primary-d);color:#FFFFFF}
.btn-accent{background:var(--c-accent);color:#FFFFFF;border-color:var(--c-accent)}
.btn-accent:hover,.btn-accent:focus{background:var(--c-accent-d);border-color:var(--c-accent-d);color:#FFFFFF}
.btn-ink{background:var(--c-ink);color:#FFFFFF;border-color:var(--c-ink)}
.btn-ink:hover,.btn-ink:focus{background:#052B22;border-color:#052B22;color:#FFFFFF}
.btn-ghost{background:transparent;color:var(--c-primary-d);border:1.5px solid var(--c-primary)}
.btn-ghost:hover,.btn-ghost:focus{background:var(--c-primary-soft);color:var(--c-primary-d)}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:#FFFFFF;border-bottom:1px solid rgba(255,255,255,.35);padding-bottom:2px}
.link-arrow::after{content:"→";transition:transform .2s ease}
.link-arrow:hover{color:var(--c-primary)}
.link-arrow:hover::after{transform:translateX(4px)}

/* ============ 左侧竖向导航 ============ */
.side-nav{position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;background:#FFFFFF;border-right:1px solid var(--c-line);display:flex;flex-direction:column;z-index:1040}
.brand{display:flex;align-items:center;gap:12px;height:88px;padding:0 20px;border-bottom:1px solid var(--c-line);flex:0 0 auto}
.brand-mark{flex:0 0 auto;width:40px;height:40px;border-radius:12px;background:var(--c-primary);color:#06231B;font-weight:800;font-size:18px;display:grid;place-items:center}
.brand-text{font-size:17px;font-weight:800;line-height:1.35;letter-spacing:-0.01em;color:var(--c-ink)}
.nav-scroll{flex:1 1 auto;overflow-y:auto;padding:16px 12px}
.nav-label{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--c-muted);margin:8px 8px 10px}
.nav-item{position:relative;display:flex;align-items:center;height:44px;padding:0 12px;border-radius:10px;font-size:15px;font-weight:500;color:var(--c-ink-2)}
.nav-item:hover{background:var(--c-primary-soft);color:var(--c-ink)}
.nav-item.active{background:var(--c-primary-soft);color:var(--c-ink);font-weight:700}
.nav-item.active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:2px;background:var(--c-primary)}
.nav-divider{height:1px;margin:14px 8px;background:repeating-linear-gradient(90deg,var(--c-line) 0 6px,transparent 6px 12px)}
.nav-foot{flex:0 0 auto;padding:16px;border-top:1px solid var(--c-line)}
.nav-contact{font-size:13px;line-height:1.7;color:var(--c-muted);margin-top:10px}

/* ============ 移动端顶栏 / 抽屉 ============ */
.top-nav{display:none}
.top-nav-inner{display:flex;align-items:center;justify-content:space-between;height:60px;padding:0 16px}
.brand-mini{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:800;letter-spacing:-0.01em}
.brand-mini .brand-mark{width:32px;height:32px;border-radius:9px;font-size:15px}
.nav-toggler{width:44px;height:44px;border:1px solid var(--c-line);border-radius:10px;background:#FFFFFF;display:grid;place-content:center;gap:4px;padding:0;cursor:pointer}
.nav-toggler i{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:background-color .2s ease}
.nav-toggler:hover i{background:var(--c-primary-d)}
.mobile-drawer{width:86vw;max-width:340px;border:0;border-radius:0 20px 20px 0;background:#FFFFFF}
.mobile-drawer .offcanvas-body{padding:12px 14px 24px}
.drawer-brand{display:flex;align-items:center;gap:12px;padding:12px 8px 16px;border-bottom:1px solid var(--c-line);margin-bottom:12px}
.mobile-drawer .nav-item{height:52px;font-size:16px}

/* ============ 主内容偏移 ============ */
.site-main{margin-left:calc(var(--nav-w) + 24px);overflow:hidden}

/* ============ Hero ============ */
.hero{position:relative;background:var(--c-dark);color:#EAF2EE;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:48px 48px;pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;min-height:520px;padding:72px 0}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#B7E9D8;background:rgba(0,190,138,.14);border:1px solid rgba(0,190,138,.28);border-radius:999px;padding:5px 14px;margin-bottom:20px}
.hero h1{font-size:44px;line-height:1.2;font-weight:800;letter-spacing:-0.01em;color:#FFFFFF}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.74);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:32px}
.hero-trust{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:36px}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72)}
.hero-trust li::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--c-primary);flex:0 0 auto}
.hero-media{position:relative;border-radius:14px;overflow:hidden;background:linear-gradient(135deg,rgba(0,190,138,.18),rgba(0,190,138,.04));box-shadow:0 24px 48px rgba(0,0,0,.35);border:1px solid var(--c-dark-line)}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(140deg,rgba(0,190,138,.20),rgba(0,190,138,0) 62%)}

/* ============ 痛点 ============ */
.pain-list{display:grid;gap:0;border-top:1px solid var(--c-line)}
.pain-item{display:grid;grid-template-columns:110px 1fr;gap:24px;align-items:start;padding:28px 0;border-bottom:1px dashed var(--c-line)}
.pain-num{font-family:var(--font-num);font-size:44px;font-weight:800;line-height:1;letter-spacing:.02em;color:transparent;-webkit-text-stroke:1.5px rgba(0,190,138,.55)}
.pain-q{font-size:20px;font-weight:700;line-height:1.5}
.pain-a{margin-top:8px;font-size:15px;color:var(--c-ink-2)}
.pain-tag{display:inline-block;margin-top:12px;font-size:12px;color:var(--c-muted);border:1px dashed var(--c-line);border-radius:999px;padding:3px 12px}

/* ============ 方案卡片（非对称） ============ */
.solution-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px}
.solution-lead{grid-row:span 2;display:grid;grid-template-columns:1fr 1fr;background:#FFFFFF;border:1px solid var(--c-line);border-radius:16px;overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.solution-lead .sol-media{background:linear-gradient(135deg,rgba(0,190,138,.16),rgba(0,190,138,.04))}
.solution-lead .sol-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/5}
.solution-lead .sol-body{padding:28px 26px;display:flex;flex-direction:column;gap:12px}
.sol-card{background:#FFFFFF;border:1px solid var(--c-line);border-radius:16px;overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.sol-card:hover,.solution-lead:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,190,138,.35)}
.sol-card .sol-media{background:linear-gradient(135deg,rgba(0,190,138,.16),rgba(0,190,138,.04))}
.sol-card .sol-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.sol-card .sol-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.sol-icon{width:40px;height:40px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary-d);display:grid;place-items:center;font-size:18px;font-weight:800}
.sol-title{font-size:20px;font-weight:700;line-height:1.4}
.sol-text{font-size:15px;color:var(--c-ink-2)}
.sol-more{margin-top:auto;font-size:14px;font-weight:600;color:var(--c-primary-d);display:inline-flex;align-items:center;gap:6px}
.sol-more::after{content:"→";transition:transform .2s ease}
.sol-card:hover .sol-more::after,.solution-lead:hover .sol-more::after{transform:translateX(3px)}

/* ============ 数据条 ============ */
.stats{background:var(--c-dark-2);color:#EAF2EE}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:12px 0}
.stat{padding:34px 24px;border-left:1px solid var(--c-dark-line)}
.stat:first-child{border-left:0}
.stat-num{font-family:var(--font-num);font-size:40px;font-weight:800;line-height:1.1;letter-spacing:.02em;color:#FFFFFF;font-variant-numeric:tabular-nums}
.stat-unit{font-size:14px;font-weight:600;color:var(--c-primary);margin-left:6px}
.stat-text{margin-top:10px;font-size:13px;color:rgba(255,255,255,.62)}

/* ============ 内容列表 ============ */
.filter-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.tag-pill{font-size:13px;font-weight:600;color:var(--c-ink-2);background:var(--c-surface-2);border:1px solid var(--c-line);border-radius:999px;padding:6px 16px}
.tag-pill:hover{color:var(--c-primary-d);border-color:rgba(0,190,138,.35);background:var(--c-primary-soft)}
.tag-pill.on{color:#06231B;background:var(--c-primary);border-color:var(--c-primary)}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{display:flex;flex-direction:column;background:#FFFFFF;border:1px solid var(--c-line);border-radius:16px;overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,190,138,.35)}
.post-thumb{display:block;background:linear-gradient(135deg,rgba(0,190,138,.16),rgba(0,190,138,.04))}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.post-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 22px}
.badge-soft{display:inline-block;font-size:12px;font-weight:600;color:var(--c-primary-d);background:var(--c-primary-soft);border-radius:999px;padding:2px 10px;align-self:flex-start}
.post-title{font-size:18px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-title a:hover{color:var(--c-primary-d)}
.post-excerpt{font-size:14px;line-height:1.7;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;padding-top:12px;border-top:1px dashed var(--c-line);font-size:13px;color:var(--c-muted);font-family:var(--font-num);font-variant-numeric:tabular-nums;display:flex;gap:16px;flex-wrap:wrap}
.post-card.is-featured{grid-column:span 2;flex-direction:row;min-height:280px}
.post-card.is-featured .post-thumb{flex:0 0 46%}
.post-card.is-featured .post-thumb img{height:100%;aspect-ratio:auto}
.post-card.is-featured .post-body{justify-content:center}
.empty-state{grid-column:1/-1;background:#FFFFFF;border:1px dashed var(--c-line);border-radius:16px;padding:56px 24px;text-align:center}
.empty-icon{width:48px;height:48px;margin:0 auto 16px;border-radius:14px;background:var(--c-primary-soft);color:var(--c-primary-d);display:grid;place-items:center;font-size:22px;font-weight:800}
.empty-state p{font-size:15px;color:var(--c-ink-2);margin-bottom:18px}

/* ============ 表单 ============ */
.form-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:start}
.panel{background:#FFFFFF;border:1px solid var(--c-line);border-radius:24px;padding:32px;box-shadow:var(--sh-1)}
.form-note{font-size:12px;color:var(--c-muted);margin-bottom:22px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:18px}
.field label{font-size:13px;font-weight:600;color:var(--c-ink)}
.field input,.field select,.field textarea{width:100%;height:44px;padding:0 14px;font-family:inherit;font-size:15px;color:var(--c-ink);background:#FFFFFF;border:1px solid var(--c-line);border-radius:10px;transition:border-color .2s ease,box-shadow .2s ease}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--c-muted)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(0,190,138,.18)}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--c-accent)}
.field .err{display:none;font-size:12px;color:var(--c-accent)}
.field.has-error .err{display:block}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--c-ink-2);line-height:1.7}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--c-primary);flex:0 0 auto}
.check-row.has-error{color:var(--c-accent)}
.check-row a{color:var(--c-primary-d);border-bottom:1px solid rgba(0,190,138,.4)}
.form-foot{margin-top:8px}
.form-tip{margin-top:12px;font-size:13px;color:var(--c-muted)}
.form-ok{margin-top:12px;font-size:14px;font-weight:600;color:var(--c-primary-d);display:none}
.form-ok.show{display:block}
.side-card{background:var(--c-dark-2);color:#EAF2EE;border-radius:24px;padding:32px;box-shadow:var(--sh-1)}
.side-card h3{font-size:20px;font-weight:700;color:#FFFFFF}
.side-list{margin-top:20px;display:grid;gap:16px}
.side-list li{display:flex;gap:12px;font-size:14px;color:rgba(255,255,255,.76);line-height:1.7}
.side-list li::before{content:"";flex:0 0 auto;width:8px;height:8px;margin-top:8px;border-radius:2px;background:var(--c-primary)}
.side-meta{margin-top:24px;padding-top:20px;border-top:1px solid var(--c-dark-line);font-size:13px;color:rgba(255,255,255,.62);line-height:2}
.side-meta strong{color:#FFFFFF;font-weight:600}

/* ============ FAQ ============ */
.faq .accordion-item{background:#FFFFFF;border:1px solid var(--c-line);border-radius:12px;overflow:hidden;margin-bottom:12px}
.faq .accordion-item:last-child{margin-bottom:0}
.faq .accordion-header{margin:0}
.faq .accordion-button{display:flex;align-items:center;gap:16px;width:100%;padding:18px 20px;font-size:16px;font-weight:600;color:var(--c-ink);background:#FFFFFF;border:0;box-shadow:none;text-align:left;transition:background-color .2s ease,color .2s ease}
.faq .accordion-button:not(.collapsed){color:var(--c-primary-d);background:var(--c-primary-soft);box-shadow:inset 3px 0 0 var(--c-primary)}
.faq .accordion-button:focus{box-shadow:none;outline:3px solid rgba(0,190,138,.30);outline-offset:-2px}
.faq .accordion-button:hover{color:var(--c-primary-d)}
.faq .accordion-button::after{content:"+";flex:0 0 auto;margin-left:auto;width:26px;height:26px;display:grid;place-items:center;font-size:20px;font-weight:400;line-height:1;color:var(--c-primary);background-image:none;border-radius:8px;background-color:var(--c-primary-soft);transition:transform .2s ease}
.faq .accordion-button:not(.collapsed)::after{content:"−";transform:none;background-color:rgba(0,190,138,.20)}
.faq .accordion-body{padding:6px 20px 22px;font-size:15px;color:var(--c-ink-2);border-top:1px dashed var(--c-line);margin-top:0;padding-top:16px}
.faq-layout{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:start}
.faq-aside{display:grid;gap:16px}
.mini-card{background:#FFFFFF;border:1px solid var(--c-line);border-radius:16px;padding:22px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,190,138,.35)}
.mini-card h4{font-size:16px;font-weight:700;margin-bottom:6px}
.mini-card p{font-size:14px;color:var(--c-ink-2)}

/* ============ 弹层 ============ */
.modal-backdrop{--bs-backdrop-bg:rgba(12,21,18,.55);--bs-backdrop-opacity:1}
.modal-content{border:0;border-radius:20px;box-shadow:var(--sh-2)}
.modal-header{border-bottom:1px dashed var(--c-line);padding:22px 24px 16px}
.modal-title{font-size:19px;font-weight:700}
.modal-body{padding:22px 24px 24px}
.modal-x{position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:10px;border:1px solid var(--c-line);background:#FFFFFF;color:var(--c-ink-2);font-size:20px;line-height:1;display:grid;place-items:center;cursor:pointer;transition:background-color .2s ease,color .2s ease}
.modal-x:hover{background:var(--c-surface-2);color:var(--c-primary-d)}

/* ============ 底部 CTA 与页脚 ============ */
.footer-cta{background:var(--c-dark-2);color:#EAF2EE}
.footer-cta .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;padding-top:44px;padding-bottom:44px}
.footer-cta h2{font-size:26px;font-weight:700;color:#FFFFFF;letter-spacing:-0.01em}
.footer-cta p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.66)}
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.72);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand .brand{height:auto;border:0;padding:0;margin-bottom:16px}
.footer-brand .brand-text{color:#FFFFFF}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:340px}
.footer-col h3{font-size:14px;font-weight:700;color:var(--c-primary);margin-bottom:16px;letter-spacing:.04em}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--c-primary)}
.footer-col p{font-size:14px;color:rgba(255,255,255,.62);line-height:1.9}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid var(--c-dark-line);display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.52)}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ============ 返回顶部 ============ */
.to-top{position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;border:1.5px solid var(--c-primary);background:#FFFFFF;color:var(--c-primary-d);font-size:18px;display:grid;place-items:center;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s ease,transform .25s ease,visibility .25s ease;z-index:1030}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-primary-soft)}

/* ============ 响应式 ============ */
@media (min-width:1200px) and (max-width:1399.98px){:root{--nav-w:232px}}
@media (min-width:992px) and (max-width:1199.98px){:root{--nav-w:200px}.brand-text{font-size:15px}}
@media (max-width:991.98px){
  .side-nav{display:none}
  .site-main{margin-left:0}
  .top-nav{display:block;position:sticky;top:0;z-index:1040;background:#FFFFFF;border-bottom:1px solid var(--c-line)}
  .top-nav.scrolled{box-shadow:var(--sh-1)}
  .hero-grid{grid-template-columns:1fr;gap:36px;min-height:auto;padding:56px 0}
  .hero h1{font-size:34px}
  .solution-grid{grid-template-columns:1fr}
  .solution-lead{grid-row:auto}
  .faq-layout{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-left:0}
  .section{padding:64px 0}
}
@media (max-width:767.98px){
  .hero h1{font-size:30px}
  .sec-title{font-size:24px}
  .solution-lead{grid-template-columns:1fr}
  .solution-lead .sol-media img{aspect-ratio:16/9}
  .post-grid{grid-template-columns:1fr}
  .post-card.is-featured{grid-column:auto;flex-direction:column;min-height:0}
  .post-card.is-featured .post-thumb{flex:none}
  .post-card.is-featured .post-thumb img{height:auto;aspect-ratio:16/9}
  .pain-item{grid-template-columns:72px 1fr;gap:16px}
  .pain-num{font-size:34px}
  .pain-q{font-size:18px}
  .wrap{padding:0 16px}
  .panel{padding:24px 20px;border-radius:18px}
  .side-card{padding:24px 20px;border-radius:18px}
}
@media (max-width:575.98px){
  .stats-grid{grid-template-columns:1fr}
  .stat{border-left:0;border-top:1px solid var(--c-dark-line);padding:26px 20px}
  .stat:first-child{border-top:0}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .footer-cta .wrap .btn{width:100%}
  .modal-body{padding:20px 18px 22px}
  .modal-content{border-radius:20px 20px 0 0}
  .modal-dialog{margin:0;position:fixed;bottom:0;left:0;right:0;max-width:100%}
}

/* roulang page: article */
:root{
  --c-bg:#F5F7F4;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF2EE;
  --c-ink:#101A16;
  --c-ink-2:#44554D;
  --c-muted:#7C8A83;
  --c-line:#E2E8E3;
  --c-primary:#00BE8A;
  --c-primary-d:#0AA173;
  --c-primary-soft:rgba(0,190,138,.10);
  --c-accent:#FF6A3D;
  --c-dark:#0C1512;
  --c-dark-2:#14241F;
  --c-dark-line:rgba(255,255,255,.10);
  --sh-1:0 1px 2px rgba(16,26,22,.06),0 8px 24px rgba(16,26,22,.06);
  --sh-2:0 12px 32px rgba(16,26,22,.10);
  --r-card:16px;
  --r-lg:24px;
  --r-btn:10px;
  --r-img:14px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate",ui-monospace,Consolas,"Courier New",monospace;
  --rail:232px;
}
@media (min-width:1400px){:root{--rail:260px}}
@media (min-width:992px) and (max-width:1199.98px){:root{--rail:200px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
a:hover{color:var(--c-primary-d)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(0,190,138,.22)}
:focus-visible{outline:3px solid rgba(0,190,138,.28);outline-offset:2px;border-radius:6px}

.wrap{max-width:1240px;margin:0 auto;padding:0 24px}

/* ============ 左侧竖向导航 ============ */
.rail{
  position:fixed;left:0;top:0;width:var(--rail);height:100vh;
  background:var(--c-surface);border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;z-index:1030;
}
.rail-brand{height:88px;display:flex;align-items:center;padding:0 18px;border-bottom:1px solid var(--c-line);flex:0 0 auto}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand:hover{color:inherit}
.brand-mark{
  flex:0 0 auto;width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,#12d29b,var(--c-primary) 55%,#059b76);
  color:#04231A;display:grid;place-items:center;
  font-family:var(--font-num);font-weight:800;font-size:18px;letter-spacing:.02em;
}
.brand-mark.sm{width:30px;height:30px;border-radius:9px;font-size:15px}
.brand-text{font-size:17px;font-weight:800;line-height:1.35;letter-spacing:-.01em;color:var(--c-ink)}
.brand-text.sm{font-size:15px;white-space:nowrap}

.nav-scroll{flex:1 1 auto;overflow-y:auto;padding:18px 14px;scrollbar-width:thin}
.nav-scroll::-webkit-scrollbar{width:6px}
.nav-scroll::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:6px}
.nav-label{
  font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--c-muted);
  margin:0 0 8px 12px;line-height:1.6;
}
.nav-item{
  position:relative;display:flex;align-items:center;
  height:44px;padding:0 12px;margin-bottom:4px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--c-ink-2);
  transition:background-color .18s ease,color .18s ease;
}
.nav-item:hover{background:var(--c-primary-soft);color:var(--c-ink)}
.nav-item.active{background:var(--c-primary-soft);color:var(--c-ink);font-weight:700}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:3px;background:var(--c-primary);
}
.nav-divider{border-top:1px dashed var(--c-line);margin:14px 8px}
.rail-foot{flex:0 0 auto;padding:16px 14px 18px;border-top:1px solid var(--c-line)}
.rail-note{font-size:13px;line-height:1.7;color:var(--c-muted);margin-top:10px;text-align:center}

/* ============ 按钮 ============ */
.btn-base{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.btn-base:focus-visible{outline:3px solid rgba(0,190,138,.28);outline-offset:2px}
.btn-primary{background:var(--c-primary);color:#04231A;box-shadow:0 6px 18px rgba(0,190,138,.24)}
.btn-primary:hover{background:var(--c-primary-d);color:#FFFFFF;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--c-accent);color:#FFFFFF}
.btn-accent:hover{background:#EE5A2C;color:#FFFFFF;transform:translateY(-1px)}
.btn-ink{background:var(--c-ink);color:#FFFFFF}
.btn-ink:hover{background:#1D2C26;color:#FFFFFF;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary-d)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-d);transform:translateY(-1px)}
.btn-block{width:100%}

/* ============ 移动端顶栏 ============ */
.topbar{display:none}
@media (max-width:991.98px){
  .rail{display:none}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:sticky;top:0;z-index:1035;height:60px;padding:0 16px;
    background:var(--c-surface);border-bottom:1px solid var(--c-line);
  }
  .burger{
    width:42px;height:42px;border:0;background:transparent;border-radius:10px;
    display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;
  }
  .burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--c-ink);transition:.2s}
  .burger:hover{background:var(--c-primary-soft)}
}
.offcanvas.offcanvas-start{width:86vw;max-width:340px;border:0;border-radius:0 20px 20px 0;background:var(--c-surface)}
.offcanvas-header{border-bottom:1px solid var(--c-line);padding:16px 18px}
.offcanvas-header .brand-text{font-size:16px;font-weight:800;color:var(--c-ink)}
.offcanvas-body{padding:14px 12px 20px}
.offcanvas-body .nav-item{font-size:16px;line-height:52px;height:52px}
.offcanvas .btn-close{border-radius:8px}
.offcanvas .btn-close:focus{box-shadow:0 0 0 3px rgba(0,190,138,.22)}

/* ============ 主内容偏移 ============ */
.page-main{margin-left:calc(var(--rail) + 24px);min-height:100vh;display:flex;flex-direction:column}
@media (max-width:991.98px){
  .page-main{margin-left:0}
}

/* ============ 文章 Hero ============ */
.art-hero{
  position:relative;overflow:hidden;
  background:var(--c-dark);color:#EAF2EE;
  padding:44px 0 40px;
}
.art-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;opacity:.16;
}
.art-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:36px 36px;
}
.art-hero .wrap{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;line-height:1.7;color:rgba(234,242,238,.62)}
.crumb a{color:rgba(234,242,238,.72);border-bottom:1px solid transparent}
.crumb a:hover{color:var(--c-primary)}
.crumb-sep{color:rgba(234,242,238,.34)}
.crumb-cur{color:#EAF2EE;font-weight:600}
.art-cat-tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:rgba(0,190,138,.18);color:#5BE8BE;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.art-title{
  font-size:44px;line-height:1.2;font-weight:800;letter-spacing:-.01em;
  color:#FFFFFF;margin:20px 0 18px;max-width:900px;
}
.art-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;font-size:14px;line-height:1.7;color:rgba(234,242,238,.68)}
.art-meta .mi{display:inline-flex;align-items:center;gap:6px}
.art-meta .mi svg{width:15px;height:15px;opacity:.7}
.art-meta .sep{width:1px;height:14px;background:var(--c-dark-line)}
@media (max-width:767.98px){
  .art-hero{padding:30px 0 28px}
  .art-title{font-size:30px;margin:16px 0 14px}
  .art-meta{font-size:13px}
}

/* ============ 正文布局 ============ */
.art-stage{padding:40px 0 72px}
@media (max-width:767.98px){.art-stage{padding:24px 0 52px}}

.art-cover{
  border-radius:var(--r-img);overflow:hidden;margin-bottom:40px;
  aspect-ratio:16/9;background:linear-gradient(140deg,rgba(0,190,138,.20),rgba(0,190,138,.05));
  border:1px solid var(--c-line);box-shadow:var(--sh-1);
}
.art-cover img{width:100%;height:100%;object-fit:cover}

.art-layout{display:grid;grid-template-columns:minmax(0,780px) 300px;gap:48px;justify-content:center;align-items:start}
@media (max-width:1199.98px){
  .art-layout{grid-template-columns:minmax(0,1fr);gap:36px}
}

.art-main{min-width:0}

.lead{
  border-left:3px solid var(--c-primary);
  background:var(--c-surface);
  border-radius:0 14px 14px 0;
  padding:16px 20px;
  font-size:15.5px;line-height:1.9;color:var(--c-ink-2);
  margin-bottom:32px;box-shadow:var(--sh-1);
}

.art-body{
  font-size:16px;line-height:1.9;color:var(--c-ink-2);
  overflow-wrap:break-word;word-break:break-word;
}
.art-body p{margin:0 0 1em}
.art-body h2{
  position:relative;font-size:24px;line-height:1.4;font-weight:700;color:var(--c-ink);
  margin:2em 0 .9em;padding-left:16px;letter-spacing:-.01em;
}
.art-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:4px;background:var(--c-primary);
}
.art-body h3{font-size:19px;line-height:1.5;font-weight:700;color:var(--c-ink);margin:1.6em 0 .6em}
.art-body h4{font-size:17px;line-height:1.6;font-weight:700;color:var(--c-ink);margin:1.4em 0 .5em}
.art-body strong{color:var(--c-ink);font-weight:700}
.art-body a{color:var(--c-primary-d);border-bottom:1px solid rgba(0,190,138,.35)}
.art-body a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.art-body ul,.art-body ol{padding-left:1.5em;margin:0 0 1.2em}
.art-body ul{list-style:disc}
.art-body ol{list-style:decimal}
.art-body li{margin:.4em 0}
.art-body ul li::marker{color:var(--c-primary)}
.art-body ol li::marker{color:var(--c-primary);font-weight:700}
.art-body blockquote{
  margin:1.4em 0;padding:16px 20px;
  background:var(--c-primary-soft);border-left:3px solid var(--c-primary);
  border-radius:0 12px 12px 0;color:var(--c-ink);font-size:15.5px;
}
.art-body blockquote p:last-child{margin-bottom:0}
.art-body img{border-radius:var(--r-img);margin:1.4em auto;height:auto;box-shadow:var(--sh-1)}
.art-body figure{margin:1.4em 0}
.art-body figcaption{font-size:13px;line-height:1.7;color:var(--c-muted);text-align:center;margin-top:8px}
.art-body table{
  display:block;width:100%;max-width:100%;overflow-x:auto;
  border-collapse:collapse;font-size:15px;line-height:1.7;margin:1.4em 0;
  border:1px solid var(--c-line);border-radius:12px;
}
.art-body th{
  background:var(--c-primary-soft);color:var(--c-ink);font-weight:700;
  padding:11px 14px;text-align:left;white-space:nowrap;border-bottom:1px solid var(--c-line);
}
.art-body td{padding:11px 14px;border-bottom:1px solid var(--c-line);color:var(--c-ink-2);vertical-align:top}
.art-body tr:last-child td{border-bottom:0}
.art-body hr{border:0;border-top:1px dashed var(--c-line);margin:2em 0}

/* 空态 */
.empty-state{
  background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-lg);
  padding:64px 24px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state .es-ico{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;
  background:var(--c-primary-soft);color:var(--c-primary-d);
  display:grid;place-items:center;font-size:24px;font-weight:800;font-family:var(--font-num);
}
.empty-state h2{font-size:22px;font-weight:700;color:var(--c-ink);margin-bottom:8px}
.empty-state p{font-size:15px;color:var(--c-ink-2);margin-bottom:22px}

/* 标签 */
.art-tags{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:36px;padding-top:24px;border-top:1px dashed var(--c-line)}
.art-tags .tt{font-size:13px;font-weight:600;color:var(--c-muted);margin-right:4px}
.tag-pill{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-d);font-size:13px;font-weight:600;
  transition:.18s;
}
.tag-pill:hover{background:rgba(0,190,138,.2);color:var(--c-primary-d)}

/* 返回操作 */
.art-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
@media (max-width:575.98px){
  .art-actions{flex-direction:column}
  .art-actions .btn-base{width:100%}
}

/* 侧栏 */
.art-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:24px;align-self:start}
@media (max-width:1199.98px){.art-side{position:static}}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px 20px;box-shadow:var(--sh-1);
}
.side-card h3{
  font-size:15px;font-weight:700;color:var(--c-ink);margin-bottom:14px;
  padding-bottom:12px;border-bottom:1px dashed var(--c-line);
}
.side-list li+li{margin-top:4px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  height:40px;padding:0 10px;border-radius:9px;font-size:14px;color:var(--c-ink-2);font-weight:500;
}
.side-list a::after{content:"›";color:var(--c-muted);font-size:16px;line-height:1}
.side-list a:hover{background:var(--c-primary-soft);color:var(--c-ink)}
.side-cta{background:var(--c-dark-2);border-color:transparent;color:rgba(234,242,238,.72)}
.side-cta h3{color:#FFFFFF;border-bottom-color:var(--c-dark-line)}
.side-cta p{font-size:14px;line-height:1.8;margin-bottom:16px}
.side-cta .btn-base{width:100%}

/* ============ 通用板块 ============ */
.blk{padding:72px 0}
.blk-tight{padding:56px 0}
@media (max-width:991.98px){.blk{padding:56px 0}.blk-tight{padding:44px 0}}
@media (max-width:767.98px){.blk{padding:44px 0}.blk-tight{padding:36px 0}}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.sec-head h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.01em;color:var(--c-ink)}
.sec-head .sec-sub{font-size:14px;color:var(--c-muted);margin-top:6px}
.sec-more{font-size:14px;font-weight:600;color:var(--c-primary-d);white-space:nowrap}
.sec-more:hover{color:var(--c-primary)}
@media (max-width:767.98px){.sec-head h2{font-size:24px}}

.card-grid{display:grid;gap:24px}
.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:991.98px){.cols-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:767.98px){.cols-3{grid-template-columns:1fr}}

.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,190,138,.35);color:inherit}
.post-thumb{
  border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;margin-bottom:16px;
  background:linear-gradient(140deg,rgba(0,190,138,.20),rgba(0,190,138,.06));
}
.post-thumb img{width:100%;height:100%;object-fit:cover}
.badge-cat{
  display:inline-flex;align-items:center;align-self:flex-start;
  height:24px;padding:0 10px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-d);
  font-size:12px;font-weight:600;letter-spacing:.02em;margin-bottom:12px;
}
.post-card h3{
  font-size:17px;line-height:1.5;font-weight:700;color:var(--c-ink);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card p{
  font-size:14px;line-height:1.75;color:var(--c-ink-2);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;padding-top:14px;border-top:1px dashed var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--c-muted);
}
.post-foot .read{color:var(--c-primary-d);font-weight:600}

/* ============ CTA 条 ============ */
.cta-band{background:var(--c-dark);color:#EAF2EE;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:36px 36px;opacity:.6;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:28px;padding:48px 0}
.cta-inner h2{font-size:26px;line-height:1.35;font-weight:700;color:#FFFFFF;letter-spacing:-.01em}
.cta-inner p{font-size:14.5px;line-height:1.8;color:rgba(234,242,238,.66);margin-top:8px;max-width:620px}
@media (max-width:767.98px){
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 0;gap:20px}
  .cta-inner h2{font-size:21px}
  .cta-inner .btn-base{width:100%}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:rgba(234,242,238,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-mark{background:linear-gradient(140deg,#12d29b,var(--c-primary) 55%,#059b76)}
.footer-brand .brand-text{color:#FFFFFF}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(234,242,238,.62);max-width:340px}
.footer-col h3{font-size:14px;font-weight:700;color:var(--c-primary);letter-spacing:.04em;margin-bottom:16px}
.footer-col ul li+li{margin-top:10px}
.footer-col a{font-size:14px;color:rgba(234,242,238,.72)}
.footer-col a:hover{color:var(--c-primary)}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(234,242,238,.72)}
.footer-col p+p{margin-top:6px}
.footer-bottom{
  border-top:1px solid var(--c-dark-line);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(234,242,238,.52);
}
.footer-bottom a{color:rgba(234,242,238,.68)}
.footer-bottom a:hover{color:var(--c-primary)}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:32px}
  .site-footer{padding-top:44px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* 回到顶部 */
.to-top{
  position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;
  background:var(--c-surface);border:1.5px solid var(--c-primary);color:var(--c-primary-d);
  display:grid;place-items:center;cursor:pointer;z-index:1040;
  box-shadow:var(--sh-1);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease,background-color .2s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-primary-soft)}
.to-top svg{width:18px;height:18px}
@media (max-width:575.98px){.to-top{right:14px;bottom:14px}}

/* Bootstrap 覆盖 */
.btn-primary{--bs-btn-bg:var(--c-primary);--bs-btn-border-color:var(--c-primary);--bs-btn-hover-bg:var(--c-primary-d);--bs-btn-hover-border-color:var(--c-primary-d);--bs-btn-color:#04231A;--bs-btn-hover-color:#04231A;--bs-btn-active-bg:var(--c-primary-d);--bs-btn-active-border-color:var(--c-primary-d);--bs-btn-active-color:#04231A;--bs-btn-focus-shadow-rgb:0,190,138;border-radius:10px;font-weight:600}
.form-control{border-radius:10px;border-color:var(--c-line)}
.form-control:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(0,190,138,.18)}
.offcanvas{--bs-offcanvas-bg:var(--c-surface)}

/* roulang page: category1 */
:root{
  --c-bg:#F5F7F4;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF2EE;
  --c-ink:#101A16;
  --c-ink-2:#44554D;
  --c-muted:#7C8A83;
  --c-line:#E2E8E3;
  --c-primary:#00BE8A;
  --c-primary-d:#0AA173;
  --c-primary-soft:rgba(0,190,138,.10);
  --c-accent:#FF6A3D;
  --c-dark:#0C1512;
  --c-dark-2:#14241F;
  --c-dark-line:rgba(255,255,255,.10);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate",ui-monospace,Consolas,monospace;
  --sh-1:0 1px 2px rgba(16,26,22,.06),0 8px 24px rgba(16,26,22,.06);
  --sh-2:0 12px 32px rgba(16,26,22,.10);
  --r-card:16px;
  --r-block:24px;
  --r-btn:10px;
  --nav-w:200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s}
a:hover{color:var(--c-primary-d)}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- 布局 ---------- */
.wrap{max-width:1240px;margin:0 auto;padding:0 24px}
.main{margin-left:var(--nav-w);min-height:100vh}
.sec{padding:68px 0}
.sec:last-of-type{padding-bottom:88px}
.sec-head{margin-bottom:32px;max-width:820px}
.sec-head h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.01em;margin-bottom:12px}
.sec-head p{color:var(--c-ink-2);font-size:15.5px}
.eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--c-primary-d);margin-bottom:10px}

/* ---------- 侧边导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
  background:var(--c-surface);border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;z-index:1035;
}
.side-brand{
  height:88px;display:flex;align-items:center;gap:12px;
  padding:0 18px;border-bottom:1px solid var(--c-line);flex:0 0 auto;
}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:var(--c-primary);color:#06251C;
  display:grid;place-items:center;font-size:19px;font-weight:800;
}
.brand-text{font-size:17px;line-height:1.35;font-weight:800;letter-spacing:-.01em}
.nav-scroll{flex:1 1 auto;overflow-y:auto;padding:14px 12px 20px}
.nav-label{font-size:12px;letter-spacing:.1em;color:var(--c-muted);padding-left:14px;margin:6px 0 8px}
.nav-item{
  display:flex;align-items:center;height:44px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--c-ink-2);margin-bottom:2px;
}
.nav-item:hover{background:var(--c-primary-soft);color:var(--c-ink)}
.nav-item.active{
  background:var(--c-primary-soft);color:var(--c-primary-d);
  font-weight:600;box-shadow:inset 3px 0 0 var(--c-primary);
}
.nav-divider{border-top:1px dashed var(--c-line);margin:16px 14px}
.side-foot{flex:0 0 auto;padding:16px 18px 22px;border-top:1px solid var(--c-line)}
.side-note{font-size:13px;line-height:1.7;color:var(--c-muted);margin-top:12px}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:1035;height:60px;
  align-items:center;justify-content:space-between;
  padding:0 16px;background:var(--c-surface);border-bottom:1px solid var(--c-line);
}
.topbar.stuck{box-shadow:var(--sh-1)}
.topbar .brand{display:flex;align-items:center;gap:10px}
.topbar .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:16px}
.topbar .brand-text{font-size:16px;font-weight:800;line-height:1.2}
.navbar-toggler{
  border:0;background:transparent;padding:8px;display:flex;flex-direction:column;
  gap:5px;width:44px;height:44px;justify-content:center;align-items:center;
}
.navbar-toggler:focus{outline:none;box-shadow:0 0 0 3px rgba(0,190,138,.25);border-radius:10px}
.navbar-toggler span{display:block;width:22px;height:2px;background:var(--c-ink);border-radius:2px}
.mobile-nav{width:86vw;max-width:340px;border-radius:0 20px 20px 0;border:0}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--c-line);padding:18px 20px}
.mobile-nav .offcanvas-body{padding:14px 16px}
.mobile-nav .nav-item{height:52px;font-size:16px;border-radius:12px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .2s,background .2s,color .2s,box-shadow .2s,border-color .2s;
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(0,190,138,.35)}
.btn-primary{background:var(--c-primary);border-color:var(--c-primary);color:#062A20}
.btn-primary:hover{background:var(--c-primary-d);border-color:var(--c-primary-d);color:#062A20;transform:translateY(-1px)}
.btn-accent{background:var(--c-accent);border-color:var(--c-accent);color:#fff}
.btn-accent:hover{background:#E85729;border-color:#E85729;color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary-d)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-d);transform:translateY(-1px)}
.btn-ink{background:var(--c-ink);border-color:var(--c-ink);color:#fff}
.btn-ink:hover{background:#1C2B25;border-color:#1C2B25;color:#fff;transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;background:var(--c-dark);overflow:hidden;
  border-radius:0 0 var(--r-block) var(--r-block);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
  opacity:.26;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero-inner{position:relative;z-index:1;min-height:250px;display:flex;flex-direction:column;justify-content:flex-end;padding-top:48px;padding-bottom:42px}
.crumb{font-size:13px;color:rgba(255,255,255,.62);margin-bottom:18px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.crumb a{color:rgba(255,255,255,.62)}
.crumb a:hover{color:var(--c-primary)}
.crumb .cur{color:#fff}
.pill{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-d);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.cat-hero .pill{background:rgba(0,190,138,.18);color:#5FE3BC;margin-bottom:14px;align-self:flex-start}
.cat-hero h1{
  font-size:40px;line-height:1.25;font-weight:800;letter-spacing:-.01em;
  color:#fff;max-width:900px;
}
.cat-hero .lead{
  margin-top:16px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.76);max-width:760px;
}

/* ---------- 适用情景 ---------- */
.note-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.note-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);position:relative;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.note-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,190,138,.35)}
.note-item .sq{width:8px;height:8px;background:var(--c-primary);display:block;margin-bottom:14px}
.note-item h3{font-size:18px;font-weight:600;line-height:1.45;margin-bottom:8px}
.note-item p{font-size:14.5px;color:var(--c-ink-2);line-height:1.75}

/* ---------- 步骤时间线 ---------- */
.timeline{padding-top:8px}
.tl-item{
  display:grid;grid-template-columns:88px 1fr;gap:24px;
  position:relative;padding-bottom:40px;
}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:26px;top:62px;bottom:8px;
  border-left:1px dashed rgba(0,190,138,.45);
}
.tl-item:last-child::before{display:none}
.tl-num{
  font-family:var(--font-num);font-size:40px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.5px rgba(0,190,138,.85);
  letter-spacing:.02em;
}
.tl-body h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:10px}
.tl-body p{font-size:15.5px;color:var(--c-ink-2);line-height:1.85}
.tl-tip{
  margin-top:12px;font-size:14px;color:var(--c-primary-d);
  background:var(--c-primary-soft);border-radius:10px;padding:10px 14px;display:inline-flex;gap:8px;align-items:flex-start;
}

/* ---------- 图文准备区 ---------- */
.prepare{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
.prepare-media{
  border-radius:14px;overflow:hidden;box-shadow:var(--sh-1);
  aspect-ratio:16/10;background:linear-gradient(135deg,#DFF5EC,#EEF2EE);
}
.prepare-media img{width:100%;height:100%;object-fit:cover}
.img-fail{opacity:0}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px dashed var(--c-line);
  font-size:15.5px;color:var(--c-ink-2);
}
.check-list li:last-child{border-bottom:0}
.check-list i{color:var(--c-primary);margin-top:5px;font-size:15px}

/* ---------- 受阻对照 ---------- */
.case-list{border-top:1px solid var(--c-line)}
.case-row{
  display:grid;grid-template-columns:280px 1fr;gap:24px;
  padding:22px 0;border-bottom:1px solid var(--c-line);
  align-items:start;
}
.case-row h3{font-size:17px;font-weight:600;line-height:1.5;display:flex;gap:10px;align-items:flex-start}
.case-row h3 i{color:var(--c-accent);margin-top:5px;font-size:14px}
.case-row p{font-size:15px;color:var(--c-ink-2)}

/* ---------- FAQ ---------- */
.faq .accordion-item{
  border:1px solid var(--c-line);border-radius:12px;background:var(--c-surface);
  margin-bottom:12px;overflow:hidden;
}
.faq .accordion-button{
  background:transparent;box-shadow:none;border:0;
  font-size:16px;font-weight:600;color:var(--c-ink);
  padding:18px 20px;display:flex;justify-content:space-between;gap:16px;align-items:center;
  transition:color .2s,background .2s;
}
.faq .accordion-button:not(.collapsed){
  color:var(--c-primary-d);background:var(--c-primary-soft);
  box-shadow:inset 3px 0 0 var(--c-primary);
}
.faq .accordion-button:focus{box-shadow:0 0 0 3px rgba(0,190,138,.18);z-index:2}
.faq .accordion-button::after{display:none}
.faq-sign{flex:0 0 auto;width:24px;height:24px;border-radius:50%;border:1px solid var(--c-line);
  display:grid;place-items:center;font-family:var(--font-num);font-size:16px;font-weight:700;color:var(--c-ink-2)}
.faq .accordion-button:not(.collapsed) .faq-sign{border-color:var(--c-primary);color:var(--c-primary-d)}
.faq-sign::before{content:"+"}
.faq .accordion-button:not(.collapsed) .faq-sign::before{content:"−"}
.faq .accordion-body{padding:4px 20px 22px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}

/* ---------- 相关分类 ---------- */
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related a{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.related a:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,190,138,.35);color:inherit}
.related h3{font-size:17px;font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.related h3 i{color:var(--c-primary);font-size:14px}
.related p{font-size:14px;color:var(--c-ink-2);line-height:1.75}

/* ---------- 表单 ---------- */
.cta-block{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-block);
  padding:40px;box-shadow:var(--sh-1);
}
.cta-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px}
.cta-grid h2{font-size:28px;font-weight:700;line-height:1.35;letter-spacing:-.01em;margin-bottom:10px}
.cta-grid .hint{font-size:12px;color:var(--c-muted);margin-bottom:24px}
.form-label{font-size:13px;font-weight:600;color:var(--c-ink);margin-bottom:6px}
.form-control{
  border:1px solid var(--c-line);border-radius:10px;background:var(--c-surface);
  color:var(--c-ink);font-size:15px;height:44px;padding:0 14px;box-shadow:none;
  transition:border-color .2s,box-shadow .2s;
}
textarea.form-control{height:auto;padding:12px 14px;line-height:1.7;resize:vertical}
.form-control::placeholder{color:var(--c-muted)}
.form-control:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(0,190,138,.18);background:var(--c-surface)}
.form-control.is-invalid{border-color:var(--c-accent);background-image:none;box-shadow:0 0 0 3px rgba(255,106,61,.14)}
.form-check-input{border:1px solid var(--c-line);width:18px;height:18px;margin-top:4px}
.form-check-input:checked{background-color:var(--c-primary);border-color:var(--c-primary)}
.form-check-input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(0,190,138,.18)}
.form-check-label{font-size:13.5px;color:var(--c-ink-2);line-height:1.7}
.form-note{font-size:13px;margin:10px 0 14px;min-height:20px}
.form-note.err{color:var(--c-accent)}
.form-note.ok{color:var(--c-primary-d)}
.info-card{
  background:var(--c-surface-2);border-radius:var(--r-card);padding:28px;
  border:1px solid var(--c-line);
}
.info-card h3{font-size:17px;font-weight:600;margin-bottom:14px}
.info-card ul li{display:flex;gap:10px;font-size:14.5px;color:var(--c-ink-2);padding:9px 0}
.info-card ul li i{color:var(--c-primary);margin-top:5px;font-size:13px}
.info-foot{margin-top:18px;padding-top:18px;border-top:1px dashed var(--c-line);font-size:13.5px;color:var(--c-ink-2);line-height:1.9}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand .brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-text{color:#fff;font-size:17px;line-height:1.35;font-weight:800}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px}
.footer-col h3{font-size:14px;color:var(--c-primary);font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--c-primary)}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);margin-bottom:6px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--c-dark-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.52);
}
.footer-bottom a{color:rgba(255,255,255,.52)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--c-surface);border:1.5px solid var(--c-primary);color:var(--c-primary-d);
  display:grid;place-items:center;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s,transform .25s,visibility .25s;z-index:1040;cursor:pointer;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-primary-soft)}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  :root{--nav-w:232px}
}
@media (min-width:1400px){
  :root{--nav-w:260px}
}
@media (max-width:1199px){
  .sec{padding:60px 0}
  .cat-hero h1{font-size:34px}
  .cta-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:991px){
  .sidebar{display:none}
  .topbar{display:flex}
  .main{margin-left:0}
  .sec{padding:54px 0}
  .cat-hero{border-radius:0 0 18px 18px}
  .cat-hero h1{font-size:30px}
  .hero-inner{min-height:210px;padding-top:32px;padding-bottom:32px}
  .note-list{grid-template-columns:1fr}
  .prepare{grid-template-columns:1fr;gap:24px}
  .case-row{grid-template-columns:1fr;gap:8px}
  .related{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .wrap{padding:0 18px}
  .sec{padding:48px 0}
  .sec-head h2{font-size:24px}
  .cat-hero h1{font-size:26px}
  .cat-hero .lead{font-size:15px}
  .tl-item{grid-template-columns:56px 1fr;gap:16px;padding-bottom:32px}
  .tl-item::before{left:18px;top:48px}
  .tl-num{font-size:30px}
  .tl-body h3{font-size:18px}
  .tl-body p{font-size:15px}
  .cta-block{padding:24px}
  .cta-grid h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .btn{width:100%}
  .btn-sm{width:auto}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:575px){
  .wrap{padding:0 16px}
  body{font-size:15.5px;line-height:1.85}
  .sec-head h2{font-size:22px}
}

/* roulang page: category2 */
:root{
  --c-bg:#F5F7F4; --c-surface:#FFFFFF; --c-surface-2:#EEF2EE;
  --c-ink:#101A16; --c-ink-2:#44554D; --c-muted:#7C8A83; --c-line:#E2E8E3;
  --c-primary:#00BE8A; --c-primary-d:#0AA173; --c-primary-soft:rgba(0,190,138,.10);
  --c-accent:#FF6A3D; --c-dark:#0C1512; --c-dark-2:#14241F; --c-dark-line:rgba(255,255,255,.10);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate",ui-monospace,Consolas,monospace;
  --r-card:16px; --r-lg:24px; --r-btn:10px; --r-img:14px;
  --sh-1:0 1px 2px rgba(16,26,22,.06),0 8px 24px rgba(16,26,22,.06);
  --sh-2:0 12px 32px rgba(16,26,22,.10);
  --side-w:260px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--c-bg); color:var(--c-ink);
  font-family:var(--font-sans); font-size:16px; line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block}
a{color:var(--c-ink); text-decoration:none; transition:color .2s}
a:hover{color:var(--c-primary-d)}
h1,h2,h3,h4{margin:0; letter-spacing:-.01em; color:var(--c-ink)}
p{margin:0}
ul{margin:0; padding:0}
button{font-family:inherit}
::selection{background:var(--c-primary-soft); color:var(--c-ink)}
.wrap{width:100%; max-width:1240px; margin:0 auto; padding:0 24px}
.num{font-family:var(--font-num); font-variant-numeric:tabular-nums; letter-spacing:.02em}

/* ---------- 侧栏 ---------- */
.side-nav{
  position:fixed; left:0; top:0; width:var(--side-w); height:100vh;
  background:var(--c-surface); border-right:1px solid var(--c-line);
  flex-direction:column; z-index:1040;
}
.side-brand{height:88px; display:flex; align-items:center; padding:0 20px; border-bottom:1px solid var(--c-line)}
.brand{display:flex; align-items:center; gap:12px; color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:40px; height:40px; flex:0 0 40px; border-radius:12px;
  background:var(--c-primary); color:#06231A; font-weight:800; font-size:19px;
  display:flex; align-items:center; justify-content:center;
}
.brand-text{font-size:17px; font-weight:800; line-height:1.35}
.nav-scroll{flex:1; overflow-y:auto; padding:20px 14px}
.nav-label{font-size:12px; color:var(--c-muted); letter-spacing:.08em; padding:0 10px 8px; margin:0}
.nav-item{
  display:flex; align-items:center; min-height:44px; padding:0 12px; margin-bottom:4px;
  border-radius:10px; font-size:15px; font-weight:500; color:var(--c-ink-2);
  border-left:3px solid transparent; transition:background .2s,color .2s,border-color .2s;
}
.nav-item:hover{background:var(--c-primary-soft); color:var(--c-ink)}
.nav-item.active{background:var(--c-primary-soft); color:var(--c-ink); font-weight:600; border-left-color:var(--c-primary)}
.nav-divider{height:1px; margin:16px 10px; border-top:1px dashed var(--c-line)}
.side-foot{padding:16px; border-top:1px solid var(--c-line)}
.side-note{font-size:13px; line-height:1.7; color:var(--c-muted); margin-top:12px}

/* ---------- 顶部移动导航 ---------- */
.topbar{
  position:sticky; top:0; z-index:1050; height:60px; background:var(--c-surface);
  border-bottom:1px solid var(--c-line); display:flex; align-items:center;
  justify-content:space-between; padding:0 16px; transition:box-shadow .2s;
}
.topbar.is-stuck{box-shadow:var(--sh-1)}
.topbar .brand-mark{width:34px; height:34px; flex:0 0 34px; font-size:16px; border-radius:10px}
.topbar .brand-text{font-size:15px; font-weight:800; line-height:1.25}
.nav-toggle{
  width:44px; height:44px; border:0; background:transparent; padding:0;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:5px;
  border-radius:10px; cursor:pointer;
}
.nav-toggle span{display:block; width:22px; height:2px; border-radius:2px; background:var(--c-ink); transition:transform .2s}
.nav-toggle:focus-visible{outline:none; box-shadow:0 0 0 3px rgba(0,190,138,.35)}
.nav-drawer{width:86vw !important; max-width:340px; border:0 !important; border-radius:0 20px 20px 0; background:var(--c-surface)}
.nav-drawer .drawer-head{height:72px; display:flex; align-items:center; padding:0 20px; border-bottom:1px solid var(--c-line)}
.nav-drawer .drawer-body{padding:16px 14px; overflow-y:auto; height:calc(100% - 72px - 96px)}
.nav-drawer .nav-item{min-height:52px; font-size:16px; border-radius:12px}
.nav-drawer .drawer-foot{padding:16px; border-top:1px solid var(--c-line)}

/* ---------- 主内容 ---------- */
.main{margin-left:0}
.sec{padding:56px 0}
.sec-head{margin-bottom:32px; max-width:760px}
.sec-head h2{font-size:24px; font-weight:700; line-height:1.3}
.sec-head p{margin-top:12px; color:var(--c-ink-2); font-size:15.5px; line-height:1.85}
.eyebrow{
  display:inline-flex; align-items:center; gap:8px; font-size:12px; font-weight:700;
  color:var(--c-primary-d); background:var(--c-primary-soft); border-radius:999px;
  padding:4px 12px; margin-bottom:14px; letter-spacing:.04em;
}

/* ---------- 分类 Hero ---------- */
.cat-hero{position:relative; background:var(--c-dark); color:#EAF2EE; overflow:hidden; min-height:260px; display:flex; align-items:center}
.cat-hero-bg{
  position:absolute; inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover; background-position:center; opacity:.20;
}
.cat-hero::after{
  content:""; position:absolute; inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px; opacity:.5;
}
.cat-hero .wrap{position:relative; z-index:2; padding-top:52px; padding-bottom:52px}
.crumb{display:flex; flex-wrap:wrap; align-items:center; gap:8px; font-size:13px; color:rgba(255,255,255,.62); margin-bottom:18px}
.crumb a{color:rgba(255,255,255,.72)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:rgba(255,255,255,.35)}
.crumb .current{color:#EAF2EE}
.cat-hero h1{color:#F2F8F5; font-size:30px; font-weight:800; line-height:1.28; max-width:880px}
.hero-lead{margin-top:18px; max-width:760px; color:rgba(255,255,255,.72); font-size:15.5px; line-height:1.85}
.hero-actions{margin-top:26px; display:flex; flex-wrap:wrap; gap:12px; align-items:center}
.hero-link{color:rgba(255,255,255,.82); font-size:14px; border-bottom:1px dashed rgba(255,255,255,.4); padding-bottom:2px}
.hero-link:hover{color:var(--c-primary); border-color:var(--c-primary)}

/* ---------- 按钮 ---------- */
.btn{
  --bs-btn-border-radius:10px;
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:44px; padding:0 22px; border-radius:var(--r-btn); font-size:15px; font-weight:600;
  line-height:1; border:1px solid transparent; cursor:pointer;
  transition:transform .2s,background .2s,border-color .2s,color .2s,box-shadow .2s;
}
.btn:focus-visible{outline:none; box-shadow:0 0 0 3px rgba(0,190,138,.35)}
.btn-primary{background:var(--c-primary); border-color:var(--c-primary); color:#06231A}
.btn-primary:hover,.btn-primary:active{background:var(--c-primary-d); border-color:var(--c-primary-d); color:#fff; transform:translateY(-1px)}
.btn-ink{background:var(--c-dark); border-color:var(--c-dark); color:#fff}
.btn-ink:hover,.btn-ink:active{background:#1B2C25; border-color:#1B2C25; color:#fff; transform:translateY(-1px)}
.btn-accent{background:var(--c-accent); border-color:var(--c-accent); color:#fff}
.btn-accent:hover,.btn-accent:active{background:#E85A2E; border-color:#E85A2E; color:#fff; transform:translateY(-1px)}
.btn-ghost{background:transparent; border:1.5px solid var(--c-primary); color:var(--c-primary-d)}
.btn-ghost:hover,.btn-ghost:active{background:var(--c-primary-soft); color:var(--c-primary-d); transform:translateY(-1px)}
.btn-block{width:100%}

/* ---------- 双列图文卡 ---------- */
.grid-2{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:24px}
.grid-3{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px}
.safety-card{
  background:var(--c-surface); border:1px solid var(--c-line); border-left:4px solid var(--c-primary);
  border-radius:var(--r-card); padding:24px; box-shadow:var(--sh-1);
  display:flex; flex-direction:column; gap:16px;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.safety-card:hover{transform:translateY(-2px); box-shadow:var(--sh-2); border-color:rgba(0,190,138,.35); border-left-color:var(--c-primary)}
.safety-card.tone-ink{border-left-color:var(--c-dark)}
.safety-card.tone-accent{border-left-color:var(--c-accent)}
.safety-card.tone-muted{border-left-color:#9FB3AA}
.card-top{display:flex; gap:14px; align-items:flex-start}
.ico-box{
  width:44px; height:44px; flex:0 0 44px; border-radius:12px; background:var(--c-primary-soft);
  color:var(--c-primary-d); font-weight:800; font-size:17px;
  display:flex; align-items:center; justify-content:center;
}
.safety-card h3{font-size:19px; font-weight:600; line-height:1.4}
.card-desc{font-size:14px; color:var(--c-ink-2); line-height:1.75; margin-top:6px}
.thumb{
  position:relative; aspect-ratio:16/9; border-radius:var(--r-img); overflow:hidden;
  background:linear-gradient(135deg,rgba(0,190,138,.16),#E6EEE9);
}
.thumb::before{
  content:""; position:absolute; inset:0; opacity:.35;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Crect x='6' y='9' width='28' height='22' rx='4' fill='none' stroke='%2300BE8A' stroke-width='2'/%3E%3Ccircle cx='20' cy='20' r='4' fill='%2300BE8A'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:center; background-size:40px 40px;
}
.thumb img{position:relative; z-index:1; width:100%; height:100%; object-fit:cover; border-radius:var(--r-img)}
.check-list{list-style:none}
.check-list li{position:relative; padding-left:28px; margin-bottom:9px; font-size:14px; line-height:1.7; color:var(--c-ink-2)}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:""; position:absolute; left:0; top:5px; width:17px; height:17px;
  border-radius:5px; background:var(--c-primary-soft);
}
.check-list li::after{
  content:""; position:absolute; left:5.5px; top:9px; width:6px; height:3px;
  border-left:2px solid var(--c-primary); border-bottom:2px solid var(--c-primary);
  transform:rotate(-45deg);
}

/* ---------- 要点清单两列块 ---------- */
.check-panel{
  background:var(--c-surface-2); border:1px solid var(--c-line); border-radius:var(--r-lg);
  padding:32px; display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px 40px;
}
.check-panel .check-list li{padding-left:30px; font-size:15px; color:var(--c-ink)}
.check-panel .check-list li::before{width:18px; height:18px; top:7px}
.check-panel .check-list li::after{left:6px; top:11.5px}

/* ---------- 适用场景 ---------- */
.scene-card{
  background:var(--c-surface); border:1px solid var(--c-line); border-radius:var(--r-card);
  overflow:hidden; box-shadow:var(--sh-1); transition:transform .2s,box-shadow .2s,border-color .2s;
}
.scene-card:hover{transform:translateY(-2px); box-shadow:var(--sh-2); border-color:rgba(0,190,138,.35)}
.scene-card .thumb{border-radius:0; aspect-ratio:16/10}
.scene-body{padding:20px 22px 24px}
.scene-body h3{font-size:18px; font-weight:600}
.scene-body p{margin-top:10px; font-size:14px; color:var(--c-ink-2); line-height:1.75}
.tag-inline{
  display:inline-block; font-size:12.5px; padding:2px 10px; border-radius:999px;
  background:var(--c-primary-soft); color:var(--c-primary-d); font-weight:600; margin-bottom:12px;
}

/* ---------- 四步处理 ---------- */
.step-grid{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:20px}
.step-card{
  background:var(--c-surface); border:1px solid var(--c-line); border-radius:var(--r-card);
  padding:26px 22px; box-shadow:var(--sh-1); position:relative; overflow:hidden;
}
.step-num{
  font-family:var(--font-num); font-size:36px; font-weight:800; color:var(--c-primary);
  opacity:.9; line-height:1; letter-spacing:.02em;
}
.step-card h3{font-size:17px; font-weight:600; margin-top:14px}
.step-card p{margin-top:8px; font-size:14px; color:var(--c-ink-2); line-height:1.75}
.step-card::after{
  content:""; position:absolute; right:-20px; bottom:-20px; width:80px; height:80px;
  border-radius:16px; background:var(--c-primary-soft);
}

/* ---------- 近期提示 ---------- */
.notice-list{display:grid; gap:16px}
.notice-item{
  display:grid; grid-template-columns:110px 1fr auto; gap:20px; align-items:center;
  background:var(--c-surface); border:1px solid var(--c-line); border-radius:var(--r-card);
  padding:20px 24px; box-shadow:var(--sh-1); transition:transform .2s,box-shadow .2s,border-color .2s;
}
.notice-item:hover{transform:translateY(-2px); box-shadow:var(--sh-2); border-color:rgba(0,190,138,.35)}
.notice-date{font-family:var(--font-num); font-size:15px; font-weight:700; color:var(--c-primary-d); letter-spacing:.02em}
.notice-item h3{font-size:16.5px; font-weight:600}
.notice-item p{margin-top:6px; font-size:14px; color:var(--c-ink-2); line-height:1.7}
.notice-more{font-size:14px; font-weight:600; color:var(--c-primary-d); white-space:nowrap}
.notice-more:hover{color:var(--c-primary)}

/* ---------- FAQ ---------- */
.accordion-item{
  border:1px solid var(--c-line) !important; border-radius:12px !important;
  overflow:hidden; margin-bottom:12px; background:var(--c-surface); box-shadow:var(--sh-1);
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  background:var(--c-surface); color:var(--c-ink); font-size:16px; font-weight:600;
  padding:18px 20px; box-shadow:none !important; border:0; position:relative;
}
.accordion-button:not(.collapsed){background:var(--c-primary-soft); color:var(--c-primary-d); box-shadow:inset 3px 0 0 var(--c-primary) !important; border-radius:0}
.accordion-button::after{display:none !important}
.acc-icon{
  width:22px; height:22px; flex:0 0 22px; margin-left:auto; position:relative;
  border-radius:6px; background:var(--c-primary-soft);
}
.acc-icon::before,.acc-icon::after{
  content:""; position:absolute; left:50%; top:50%; background:var(--c-primary-d);
  transform:translate(-50%,-50%); border-radius:2px; transition:transform .2s;
}
.acc-icon::before{width:12px; height:2px}
.acc-icon::after{width:2px; height:12px}
.accordion-button:not(.collapsed) .acc-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.accordion-body{padding:4px 20px 20px; font-size:14.5px; line-height:1.85; color:var(--c-ink-2); background:var(--c-surface)}
.accordion-button:focus-visible{outline:none; box-shadow:0 0 0 3px rgba(0,190,138,.35) !important}

/* ---------- CTA 区 ---------- */
.cta-band{background:var(--c-dark); color:#EAF2EE; position:relative; overflow:hidden}
.cta-band::before{
  content:""; position:absolute; inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:40px 40px;
}
.cta-inner{position:relative; z-index:2; display:grid; grid-template-columns:1fr 420px; gap:36px; align-items:center; padding:56px 0}
.cta-inner h2{color:#F2F8F5; font-size:24px; font-weight:700; line-height:1.35}
.cta-inner p{margin-top:12px; color:rgba(255,255,255,.66); font-size:15px; line-height:1.8; max-width:560px}
.cta-form{display:flex; gap:12px; align-items:center; flex-wrap:wrap}
.cta-form .form-control{
  flex:1 1 220px; height:44px; border-radius:var(--r-btn); border:1px solid var(--c-dark-line);
  background:rgba(255,255,255,.06); color:#EAF2EE; font-size:15px; padding:0 16px;
}
.cta-form .form-control::placeholder{color:rgba(255,255,255,.45)}
.cta-form .form-control:focus{
  background:rgba(255,255,255,.10); border-color:var(--c-primary); color:#fff;
  box-shadow:0 0 0 3px rgba(0,190,138,.18); outline:none;
}
.form-note{font-size:13px; color:var(--c-primary); width:100%; opacity:0; transition:opacity .2s}
.form-note.is-show{opacity:1}

/* ---------- 交叉链接 ---------- */
.cross{display:flex; flex-wrap:wrap; gap:12px; margin-top:20px}
.cross a{
  display:inline-flex; align-items:center; height:42px; padding:0 18px; border-radius:10px;
  background:var(--c-surface); border:1px solid var(--c-line); font-size:14.5px; font-weight:500;
  color:var(--c-ink-2); box-shadow:var(--sh-1); transition:transform .2s,color .2s,border-color .2s;
}
.cross a:hover{color:var(--c-primary-d); border-color:rgba(0,190,138,.45); transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark); color:rgba(255,255,255,.72); padding:64px 0 24px; margin-top:0}
.footer-grid{display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:36px}
.footer-brand .brand{color:#fff; margin-bottom:16px}
.footer-brand .brand:hover{color:#fff}
.footer-brand .brand-mark{background:var(--c-primary); color:#06231A}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px; line-height:1.85; color:rgba(255,255,255,.62); max-width:360px}
.footer-col h3{font-size:14px; font-weight:600; color:var(--c-primary); margin-bottom:16px; letter-spacing:.02em}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px; color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--c-primary)}
.footer-col p{font-size:14px; color:rgba(255,255,255,.62); margin-bottom:8px}
.footer-bottom{
  margin-top:44px; padding-top:20px; border-top:1px solid var(--c-dark-line);
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
  font-size:13px; color:rgba(255,255,255,.52);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed; right:22px; bottom:22px; width:44px; height:44px; border-radius:50%;
  background:var(--c-surface); border:1.5px solid var(--c-primary); color:var(--c-primary-d);
  display:flex; align-items:center; justify-content:center; cursor:pointer; z-index:1030;
  opacity:0; visibility:hidden; transform:translateY(8px);
  transition:opacity .2s,transform .2s,visibility .2s,background .2s;
}
.to-top.is-show{opacity:1; visibility:visible; transform:translateY(0)}
.to-top:hover{background:var(--c-primary-soft)}
.to-top:focus-visible{outline:none; box-shadow:0 0 0 3px rgba(0,190,138,.35)}

/* ---------- 响应式 ---------- */
@media (min-width:992px){
  .main{margin-left:calc(var(--side-w) + 24px)}
  .sec{padding:80px 0}
  .cat-hero h1{font-size:38px}
  .sec-head h2{font-size:30px}
}
@media (min-width:1200px) and (max-width:1399.98px){
  :root{--side-w:232px}
}
@media (min-width:992px) and (max-width:1199.98px){
  :root{--side-w:200px}
  .sec{padding:64px 0}
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{grid-template-columns:1fr; gap:24px}
}
@media (max-width:991.98px){
  .sec{padding:56px 0}
  .cta-inner{grid-template-columns:1fr; padding:48px 0}
  .footer-grid{grid-template-columns:1fr 1fr; gap:28px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px}
  .cat-hero h1{font-size:30px}
  .sec-head h2,.cta-inner h2{font-size:24px}
  .grid-2,.grid-3,.step-grid{grid-template-columns:1fr}
  .check-panel{grid-template-columns:1fr; padding:24px}
  .notice-item{grid-template-columns:1fr; gap:10px}
  .notice-more{justify-self:start}
  .footer-grid{grid-template-columns:1fr}
  .btn-block-mobile{width:100%}
}
@media (max-width:575.98px){
  body{font-size:15.5px; line-height:1.85}
  .sec{padding:48px 0}
  .wrap{padding:0 16px}
  .cta-form{flex-direction:column; align-items:stretch}
  .cta-form .btn{width:100%}
  .safety-card{padding:20px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category3 */
:root{
  --c-bg:#F5F7F4;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF2EE;
  --c-ink:#101A16;
  --c-ink-2:#44554D;
  --c-muted:#7C8A83;
  --c-line:#E2E8E3;
  --c-primary:#00BE8A;
  --c-primary-d:#0AA173;
  --c-primary-soft:rgba(0,190,138,.10);
  --c-accent:#FF6A3D;
  --c-dark:#0C1512;
  --c-dark-2:#14241F;
  --c-dark-line:rgba(255,255,255,.10);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate",ui-monospace,Consolas,monospace;
  --sh-1:0 1px 2px rgba(16,26,22,.06),0 8px 24px rgba(16,26,22,.06);
  --sh-2:0 12px 32px rgba(16,26,22,.10);
  --sidebar-w:260px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-d);}
button{font-family:inherit;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

.wrap{max-width:1240px;margin:0 auto;padding:0 24px;}

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;
  z-index:1040;
}
.brand-box{
  height:88px;flex:0 0 88px;
  display:flex;align-items:center;
  padding:0 20px;
  border-bottom:1px solid var(--c-line);
}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;
  border-radius:12px;
  background:var(--c-primary);
  color:#04211A;
  font-size:20px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{font-size:17px;font-weight:800;line-height:1.35;color:var(--c-ink);}
.nav-scroll{flex:1 1 auto;overflow-y:auto;padding:18px 14px;}
.nav-label{font-size:12px;color:var(--c-muted);letter-spacing:.06em;padding:6px 10px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;
  height:44px;padding:0 12px;
  border-radius:10px;
  font-weight:500;font-size:15px;
  color:var(--c-ink-2);
}
.nav-item:hover{background:var(--c-primary-soft);color:var(--c-ink);}
.nav-item.active{background:var(--c-primary-soft);color:var(--c-primary-d);font-weight:700;}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;
  background:var(--c-primary);
}
.nav-item:focus-visible{outline:3px solid rgba(0,190,138,.35);outline-offset:2px;}
.nav-divider{height:1px;border-top:1px dashed var(--c-line);margin:14px 10px;}
.nav-foot{padding:16px;border-top:1px solid var(--c-line);}
.nav-contact{font-size:13px;line-height:1.7;color:var(--c-muted);margin-top:10px;}

/* ============ 按钮 ============ */
.btn{
  --bs-btn-padding-x:22px;
  --bs-btn-padding-y:0;
  --bs-btn-font-size:15px;
  height:44px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;
  border-radius:10px;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{
  --bs-btn-color:#04211A;
  --bs-btn-bg:#00BE8A;
  --bs-btn-border-color:#00BE8A;
  --bs-btn-hover-color:#04211A;
  --bs-btn-hover-bg:#0AA173;
  --bs-btn-hover-border-color:#0AA173;
  --bs-btn-active-color:#04211A;
  --bs-btn-active-bg:#0AA173;
  --bs-btn-active-border-color:#0AA173;
  --bs-btn-focus-shadow-rgb:0,190,138;
}
.btn-ink{
  background:var(--c-ink);color:#fff;border:1px solid var(--c-ink);
}
.btn-ink:hover{background:#1B2B24;border-color:#1B2B24;color:#fff;}
.btn-accent{
  background:var(--c-accent);color:#fff;border:1px solid var(--c-accent);
}
.btn-accent:hover{background:#E85A2E;border-color:#E85A2E;color:#fff;}
.btn-ghost{
  background:transparent;color:var(--c-primary-d);border:1.5px solid var(--c-primary);
}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-d);}
.btn:focus-visible{outline:3px solid rgba(0,190,138,.35);outline-offset:2px;box-shadow:none;}
.w-100{width:100%;}

/* ============ 移动端顶部栏 ============ */
.mobile-bar{
  display:none;
  position:sticky;top:0;z-index:1030;
  height:60px;
  align-items:center;justify-content:space-between;
  padding:0 16px;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.mobile-bar.scrolled{box-shadow:var(--sh-1);}
.mobile-bar .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:17px;border-radius:10px;}
.mobile-bar .brand-text{font-size:15px;line-height:1.25;}
.nav-toggler{
  width:40px;height:40px;padding:0;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:10px;
}
.nav-toggler span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);}
.nav-toggler:focus-visible{outline:3px solid rgba(0,190,138,.35);outline-offset:2px;}

.offcanvas{border:none;border-radius:0 20px 20px 0;width:86vw;max-width:340px;}
.offcanvas-header{border-bottom:1px solid var(--c-line);padding:18px 20px;}
.offcanvas-body{padding:14px;}
.offcanvas .nav-item{height:52px;font-size:16px;}

/* ============ 内容区 ============ */
.page{margin-left:var(--sidebar-w);}

.cat-hero{
  position:relative;
  padding:26px 0 46px;
  min-height:240px;
  color:#EAF2EE;
  background-color:var(--c-dark);
  background-image:linear-gradient(104deg,rgba(12,21,18,.95) 0%,rgba(12,21,18,.87) 46%,rgba(12,21,18,.72) 100%),url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
}
.cat-hero .wrap{position:relative;z-index:1;}
.crumb{font-size:13px;color:rgba(234,242,238,.68);display:flex;align-items:center;gap:8px;margin-bottom:18px;}
.crumb a{color:rgba(234,242,238,.68);}
.crumb a:hover{color:var(--c-primary);}
.crumb .cur{color:#EAF2EE;}
.cat-hero h1{
  font-size:44px;line-height:1.2;font-weight:800;color:#fff;
  max-width:900px;
}
.hero-lead{
  margin-top:18px;max-width:800px;
  font-size:16px;line-height:1.85;color:rgba(234,242,238,.84);
}
.hero-meta{
  margin-top:20px;font-size:13px;color:rgba(234,242,238,.62);
  display:flex;align-items:center;gap:8px;
}
.hero-meta .dot{width:6px;height:6px;border-radius:2px;background:var(--c-primary);display:inline-block;}

.section{padding:80px 0;}
.section-first{padding-top:56px;}
.section-alt{background:var(--c-surface-2);}
.sec-head{margin-bottom:32px;max-width:760px;}
.sec-head h2{font-size:30px;line-height:1.3;font-weight:700;}
.sec-head .sec-sub{margin-top:12px;font-size:15px;color:var(--c-ink-2);}
.sec-tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;letter-spacing:.06em;
  color:var(--c-primary-d);background:var(--c-primary-soft);
  padding:4px 12px;border-radius:999px;margin-bottom:14px;
}

/* ============ 快捷入口卡 ============ */
.entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.entry-card{
  display:grid;grid-template-columns:180px minmax(0,1fr);gap:20px;align-items:center;
  background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:16px;
  padding:20px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,190,138,.35);color:inherit;}
.media{
  position:relative;overflow:hidden;border-radius:14px;
  aspect-ratio:16/10;
  background:linear-gradient(135deg,var(--c-primary-soft),#EEF2EE);
  display:flex;align-items:center;justify-content:center;
}
.media .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;color:var(--c-primary);}
.media img{width:100%;height:100%;object-fit:cover;position:relative;z-index:1;}
.entry-body h3{font-size:19px;line-height:1.45;}
.entry-body p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--c-ink-2);}
.badge-soft{
  display:inline-block;font-size:12px;font-weight:600;
  color:var(--c-primary-d);background:var(--c-primary-soft);
  padding:2px 10px;border-radius:999px;margin-bottom:10px;
}
.link-more{display:inline-block;margin-top:12px;font-size:14px;font-weight:600;color:var(--c-primary-d);}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;}
.faq-group{margin-bottom:44px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group-head{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.faq-group-head .idx{
  font-family:var(--font-num);font-size:14px;font-weight:800;
  color:var(--c-primary-d);background:var(--c-primary-soft);
  border-radius:8px;padding:3px 10px;
}
.faq-group-head h3{font-size:20px;font-weight:700;}
.acc .accordion-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:12px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease;
}
.acc .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(0,190,138,.35);
  border-left:3px solid var(--c-primary);
}
.acc .accordion-button{
  position:relative;
  width:100%;
  padding:20px 62px 20px 22px;
  font-size:17px;font-weight:600;line-height:1.5;
  color:var(--c-ink);
  background:var(--c-surface);
  border:none;border-radius:12px;
  box-shadow:none;
}
.acc .accordion-button:not(.collapsed){color:var(--c-primary-d);background:var(--c-primary-soft);box-shadow:none;}
.acc .accordion-button:focus{box-shadow:none;outline:3px solid rgba(0,190,138,.35);outline-offset:-3px;}
.acc .accordion-button::before{
  content:"";position:absolute;right:24px;top:50%;
  width:14px;height:2px;border-radius:2px;background:var(--c-primary);
  transform:translateY(-50%);
}
.acc .accordion-button::after{
  content:"";position:absolute;right:30px;top:50%;
  width:2px;height:14px;border-radius:2px;background:var(--c-primary);
  transform:translateY(-50%);
  background-image:none;
  transition:opacity .2s ease,transform .2s ease;
}
.acc .accordion-button:not(.collapsed)::after{opacity:0;transform:translateY(-50%) scaleY(.2);}
.acc .accordion-body{
  padding:0 22px 22px;
  font-size:15.5px;line-height:1.85;color:var(--c-ink-2);
  border-top:1px dashed var(--c-line);
  padding-top:16px;
}

/* ============ CTA 表单 ============ */
.cta-block{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:24px;
  padding:40px;
  box-shadow:var(--sh-1);
  display:grid;grid-template-columns:1.15fr .85fr;gap:36px;
}
.cta-block h2{font-size:26px;line-height:1.35;}
.cta-block .cta-note{margin-top:10px;font-size:13px;color:var(--c-muted);}
.form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.field{margin-top:16px;}
.form-label{display:block;font-size:13px;font-weight:600;color:var(--c-ink-2);margin-bottom:6px;}
.form-control,.form-select{
  width:100%;height:44px;
  font-size:15px;color:var(--c-ink);
  background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:10px;
  padding:0 14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
textarea.form-control{height:auto;min-height:112px;padding:11px 14px;line-height:1.7;resize:vertical;}
.form-control::placeholder{color:var(--c-muted);}
.form-control:focus,.form-select:focus{
  background:var(--c-surface);
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(0,190,138,.18);
  outline:none;
}
.form-control.is-error{border-color:var(--c-accent);}
.form-check{display:flex;align-items:flex-start;gap:10px;margin-top:18px;}
.form-check-input{
  width:18px;height:18px;margin:3px 0 0;flex:0 0 18px;
  border:1px solid var(--c-line);border-radius:5px;
  background-color:var(--c-surface);
}
.form-check-input:checked{background-color:var(--c-primary);border-color:var(--c-primary);}
.form-check-input:focus{box-shadow:0 0 0 3px rgba(0,190,138,.18);border-color:var(--c-primary);}
.form-check-label{font-size:13px;line-height:1.7;color:var(--c-ink-2);}
.form-actions{margin-top:22px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-msg{font-size:13px;color:var(--c-muted);}
.form-msg.error{color:var(--c-accent);}
.form-msg.ok{color:var(--c-primary-d);}
.privacy-text{margin-top:12px;font-size:13px;line-height:1.7;color:var(--c-muted);}
.info-card{
  background:var(--c-surface-2);
  border-radius:20px;
  padding:28px;
}
.info-card h3{font-size:18px;}
.info-card ul{margin-top:16px;}
.info-card li{
  position:relative;
  padding-left:26px;margin-bottom:14px;
  font-size:14px;line-height:1.75;color:var(--c-ink-2);
}
.info-card li::before{
  content:"";position:absolute;left:0;top:8px;
  width:12px;height:12px;border-radius:4px;
  background:var(--c-primary);opacity:.85;
}
.info-contact{
  margin-top:22px;padding-top:20px;
  border-top:1px dashed var(--c-line);
  font-size:14px;line-height:2;color:var(--c-ink-2);
}
.info-contact .k{color:var(--c-muted);font-size:13px;display:inline-block;width:76px;}

/* ============ 相关分类 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  display:block;
  background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:16px;
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,190,138,.35);color:inherit;}
.rel-card h3{font-size:18px;line-height:1.45;margin-top:8px;}
.rel-card p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--c-ink-2);}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.72);padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand .brand-mark{background:var(--c-primary);color:#04211A;}
.footer-brand .brand-text{color:#fff;font-size:17px;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h3{font-size:14px;font-weight:700;color:var(--c-primary);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--c-primary);}
.footer-col p{font-size:14px;line-height:2;color:rgba(255,255,255,.72);}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid var(--c-dark-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.52);
}
.footer-bottom a{color:rgba(255,255,255,.52);}
.footer-bottom a:hover{color:var(--c-primary);}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;right:24px;bottom:28px;z-index:1050;
  width:44px;height:44px;border-radius:50%;
  display:none;align-items:center;justify-content:center;
  background:var(--c-surface);
  border:1.5px solid var(--c-primary);
  color:var(--c-primary-d);font-size:18px;font-weight:700;
  box-shadow:var(--sh-1);
}
.back-top.show{display:flex;}
.back-top:hover{background:var(--c-primary-soft);color:var(--c-primary-d);}

/* ============ 响应式 ============ */
@media (min-width:1400px){:root{--sidebar-w:260px;}}
@media (min-width:1200px) and (max-width:1399px){:root{--sidebar-w:232px;}}
@media (min-width:992px) and (max-width:1199px){:root{--sidebar-w:200px;}}
@media (max-width:1199px){
  .entry-card{grid-template-columns:150px minmax(0,1fr);gap:16px;}
  .cta-block{grid-template-columns:1fr;gap:28px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:32px;}
}
@media (max-width:991px){
  .sidebar{display:none;}
  .mobile-bar{display:flex;}
  .page{margin-left:0;}
  .cat-hero h1{font-size:32px;}
  .section{padding:64px 0;}
  .section-first{padding-top:44px;}
  .sec-head h2{font-size:26px;}
  .cta-block h2{font-size:24px;}
}
@media (max-width:767px){
  .wrap{padding:0 18px;}
  .cat-hero{padding:20px 0 36px;min-height:200px;}
  .cat-hero h1{font-size:30px;line-height:1.24;}
  .hero-lead{font-size:15.5px;line-height:1.85;}
  .section{padding:52px 0;}
  .sec-head h2{font-size:24px;}
  .entry-grid{grid-template-columns:1fr;}
  .entry-card{grid-template-columns:1fr;gap:14px;}
  .media{aspect-ratio:16/9;}
  .acc .accordion-button{font-size:16px;padding:16px 56px 16px 18px;}
  .acc .accordion-body{font-size:15px;padding:14px 18px 18px;}
  .cta-block{padding:24px;border-radius:18px;}
  .form-row{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-brand p{max-width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .back-top{right:16px;bottom:18px;}
}
@media (max-width:575px){
  .wrap{padding:0 16px;}
  .cat-hero h1{font-size:27px;}
  .btn{width:100%;}
  .form-actions .btn{width:100%;}
  .hero-meta{font-size:12px;}
}

/* roulang page: category4 */
:root{
  --c-bg:#F5F7F4;
  --c-surface:#FFFFFF;
  --c-surface-2:#EEF2EE;
  --c-ink:#101A16;
  --c-ink-2:#44554D;
  --c-muted:#7C8A83;
  --c-line:#E2E8E3;
  --c-primary:#00BE8A;
  --c-primary-d:#0AA173;
  --c-primary-soft:rgba(0,190,138,.10);
  --c-accent:#FF6A3D;
  --c-dark:#0C1512;
  --c-dark-2:#14241F;
  --c-dark-line:rgba(255,255,255,.10);
  --sh-1:0 1px 2px rgba(16,26,22,.06),0 8px 24px rgba(16,26,22,.06);
  --sh-2:0 12px 32px rgba(16,26,22,.10);
  --r-card:16px;
  --r-block:24px;
  --r-btn:10px;
  --r-img:14px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate",ui-monospace,Consolas,monospace;
  --nav-w:260px;
}
@media (max-width:1399px){:root{--nav-w:232px}}
@media (max-width:1199px){:root{--nav-w:200px}}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.8;
  color:var(--c-ink);background:var(--c-bg);
}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;font-weight:700;color:var(--c-ink)}
h1{font-size:44px;line-height:1.2;font-weight:800}
h2{font-size:30px;line-height:1.3}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--c-primary-d);text-decoration:none;transition:color .2s}
a:hover{color:var(--c-primary)}
button{font-family:inherit}
.num,.tl-day,.tl-mon,.stat-num,.date-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- 左侧导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;z-index:1035;
  background:var(--c-surface);border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;
}
.brand{
  display:flex;align-items:center;gap:12px;height:88px;padding:0 20px;
  border-bottom:1px solid var(--c-line);flex:0 0 auto;
}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-d));
  color:#06231A;font-weight:800;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(0,190,138,.28);
}
.brand-text{font-size:17px;font-weight:800;line-height:1.35;color:var(--c-ink);letter-spacing:-.01em}
.nav-scroll{flex:1 1 auto;overflow-y:auto;padding:18px 14px 8px}
.nav-scroll::-webkit-scrollbar{width:6px}
.nav-scroll::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:99px}
.nav-label{
  font-size:12px;color:var(--c-muted);letter-spacing:.08em;
  padding:6px 10px 8px;font-weight:600;
}
.nav-item{
  position:relative;display:flex;align-items:center;height:44px;
  padding:0 14px;border-radius:10px;font-size:15px;font-weight:500;
  color:var(--c-ink-2);margin-bottom:4px;transition:background .2s,color .2s;
}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:2px;background:var(--c-primary);transition:height .2s;
}
.nav-item:hover{background:var(--c-primary-soft);color:var(--c-ink)}
.nav-item.active{background:var(--c-primary-soft);color:var(--c-primary-d);font-weight:600}
.nav-item.active::before{height:20px}
.nav-divider{border-top:1px dashed var(--c-line);margin:14px 10px}
.nav-foot{flex:0 0 auto;padding:16px 18px 20px;border-top:1px solid var(--c-line)}
.nav-foot .btn{width:100%}
.nav-foot p{font-size:13px;color:var(--c-muted);margin-top:10px;line-height:1.6}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:1040;height:60px;
  background:var(--c-surface);border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;padding:0 16px;
  transition:box-shadow .25s;
}
.mobile-bar.is-scrolled{box-shadow:var(--sh-1)}
.mobile-brand{display:flex;align-items:center;gap:10px;min-width:0}
.mobile-brand .brand-mark{width:32px;height:32px;border-radius:9px;font-size:15px;box-shadow:none}
.mobile-brand span.brand-text{font-size:14px;line-height:1.25;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-toggle{
  width:44px;height:40px;border:0;background:transparent;display:flex;
  flex-direction:column;justify-content:center;gap:5px;align-items:flex-end;
  padding:0 2px;cursor:pointer;border-radius:8px;
}
.nav-toggle i{display:block;height:2px;background:var(--c-ink);border-radius:2px;transition:.2s}
.nav-toggle i:nth-child(1){width:22px}
.nav-toggle i:nth-child(2){width:16px}
.nav-toggle i:nth-child(3){width:20px}
.nav-toggle:focus-visible{outline:3px solid rgba(0,190,138,.35);outline-offset:2px}

/* ---------- 布局 ---------- */
.main{margin-left:calc(var(--nav-w) + 24px);padding:24px 24px 0;max-width:1520px}
.wrap{max-width:1240px;margin:0 auto}
.sec{padding:72px 0}
.sec-sm{padding:48px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap}
.sec-head p{color:var(--c-ink-2);font-size:15px;max-width:640px;margin-top:8px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
  letter-spacing:.14em;color:var(--c-primary-d);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--c-primary);border-radius:2px}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13px;color:var(--c-muted);display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:16px}
.crumb a{color:var(--c-muted)}
.crumb a:hover{color:var(--c-primary-d)}
.crumb .sep{color:var(--c-line)}
.crumb .cur{color:var(--c-ink-2);font-weight:600}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;border-radius:var(--r-block);overflow:hidden;
  min-height:250px;background:var(--c-dark);color:#EAF2EE;
  display:flex;align-items:flex-end;padding:36px;box-shadow:var(--sh-1);
}
.cat-hero .hero-bg{
  position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  opacity:.26;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(12,21,18,.94) 12%,rgba(12,21,18,.62) 62%,rgba(12,21,18,.30));
}
.cat-hero .hero-inner{position:relative;z-index:2;max-width:760px}
.cat-hero h1{color:#fff;font-size:38px;line-height:1.25}
.cat-hero .lead{color:rgba(234,242,238,.82);font-size:15.5px;margin-top:14px;line-height:1.85}
.cat-hero .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;padding:5px 14px;
  border-radius:999px;background:rgba(255,255,255,.10);color:#EAF2EE;
  border:1px solid var(--c-dark-line);
}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary)}

/* ---------- 通用卡片 ---------- */
.card-x{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);transition:transform .22s,box-shadow .22s,border-color .22s;
  height:100%;display:flex;flex-direction:column;
}
.card-x:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,190,138,.35)}
.card-x h3{margin-bottom:10px}
.card-x p{color:var(--c-ink-2);font-size:14.5px;line-height:1.8}
.badge-x{
  display:inline-flex;align-items:center;font-size:12.5px;font-weight:600;
  padding:2px 10px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary-d);
}
.badge-x.gray{background:var(--c-surface-2);color:var(--c-ink-2)}
.badge-x.accent{background:rgba(255,106,61,.12);color:#D9481F}
.icon-sq{
  width:44px;height:44px;border-radius:12px;background:var(--c-primary-soft);
  color:var(--c-primary-d);display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;margin-bottom:16px;
}

/* ---------- 时间轴 ---------- */
.tl-wrap{display:grid;grid-template-columns:minmax(0,1fr) 344px;gap:28px;align-items:start}
.tl{position:relative}
.tl-item{display:grid;grid-template-columns:104px 26px minmax(0,1fr);padding-bottom:26px}
.tl-item:last-child{padding-bottom:0}
.tl-date{text-align:right;padding-right:14px;padding-top:2px}
.tl-day{display:block;font-size:26px;font-weight:800;color:var(--c-ink);line-height:1.05}
.tl-mon{display:block;font-size:12.5px;color:var(--c-muted);margin-top:4px}
.tl-rail{position:relative}
.tl-rail::before{
  content:"";position:absolute;left:50%;top:6px;bottom:-26px;width:0;
  border-left:1px dashed var(--c-line);transform:translateX(-50%);
}
.tl-item:last-child .tl-rail::before{display:none}
.tl-dot{
  position:absolute;left:50%;top:8px;width:10px;height:10px;border-radius:50%;
  background:var(--c-primary);transform:translateX(-50%);box-shadow:0 0 0 4px var(--c-primary-soft);
  z-index:2;
}
.tl-body{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--sh-1);transition:transform .22s,box-shadow .22s,border-color .22s;
}
.tl-body:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,190,138,.35)}
.tl-body h3{font-size:18px;margin:10px 0 8px}
.tl-body p{font-size:14.5px;color:var(--c-ink-2)}
.tl-meta{
  display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:14px;padding-top:12px;
  border-top:1px dashed var(--c-line);font-size:13px;color:var(--c-muted);
}
.tl-meta b{color:var(--c-ink-2);font-weight:600}

/* ---------- 侧栏表单 ---------- */
.side-sticky{position:sticky;top:24px}
.form-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:20px;
  padding:26px;box-shadow:var(--sh-1);
}
.form-card h3{font-size:19px;margin-bottom:8px}
.form-card .sub{font-size:13.5px;color:var(--c-ink-2);line-height:1.75;margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--c-ink-2);margin-bottom:7px}
.form-control,.form-select{
  width:100%;height:44px;border-radius:var(--r-btn);border:1px solid var(--c-line);
  background:var(--c-surface);font-size:14.5px;color:var(--c-ink);padding:0 14px;
  transition:border-color .2s,box-shadow .2s;box-shadow:none;
}
textarea.form-control{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-control:focus,.form-select:focus{
  border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(0,190,138,.18);outline:none;
}
.form-control::placeholder{color:var(--c-muted)}
.form-control.is-invalid{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(255,106,61,.14)}
.err-text{display:none;font-size:12.5px;color:var(--c-accent);margin-top:6px}
.err-text.show{display:block}
.check-row{display:flex;gap:10px;align-items:flex-start;margin:4px 0 18px}
.check-row input[type="checkbox"]{
  width:18px;height:18px;margin-top:3px;accent-color:var(--c-primary);flex:0 0 auto;
  border-radius:5px;
}
.check-row label{font-size:13px;color:var(--c-ink-2);line-height:1.65}
.privacy-note{font-size:12.5px;color:var(--c-muted);margin-top:12px;line-height:1.7}
.form-card .btn{width:100%}

/* ---------- 步骤流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px 22px;position:relative;box-shadow:var(--sh-1);transition:transform .22s,box-shadow .22s;
}
.flow-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.flow-num{
  font-family:var(--font-num);font-size:34px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.4px var(--c-primary);letter-spacing:.02em;
}
.flow-item h3{font-size:17px;margin:14px 0 8px}
.flow-item p{font-size:14px;color:var(--c-ink-2)}

.media-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:center}
.media-frame{
  border-radius:var(--r-block);overflow:hidden;box-shadow:var(--sh-1);
  background:linear-gradient(135deg,rgba(0,190,138,.16),rgba(0,190,138,.04));
  aspect-ratio:16/10;position:relative;
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.img-fallback{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(0,190,138,.18),rgba(0,190,138,.05));
  color:var(--c-primary-d);font-size:14px;font-weight:600;z-index:0;
}
.media-frame img{position:relative;z-index:1}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:940px}
.accordion-item{
  border:1px solid var(--c-line);border-radius:12px !important;overflow:hidden;
  margin-bottom:12px;background:var(--c-surface);box-shadow:var(--sh-1);
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  position:relative;background:var(--c-surface);color:var(--c-ink);font-size:16px;
  font-weight:600;padding:20px 56px 20px 22px;border-radius:12px !important;
  box-shadow:none !important;border-left:3px solid transparent;transition:.2s;
}
.accordion-button:not(.collapsed){
  background:var(--c-surface);color:var(--c-primary-d);border-left-color:var(--c-primary);
}
.accordion-button:focus{box-shadow:none !important;outline:3px solid rgba(0,190,138,.25);outline-offset:-2px}
.accordion-button::after{display:none}
.acc-icon{position:absolute;right:22px;top:50%;width:16px;height:16px;transform:translateY(-50%)}
.acc-icon::before,.acc-icon::after{content:"";position:absolute;background:var(--c-ink-2);border-radius:2px;transition:.2s}
.acc-icon::before{left:0;top:7px;width:16px;height:2px}
.acc-icon::after{left:7px;top:0;width:2px;height:16px}
.accordion-button:not(.collapsed) .acc-icon::before{background:var(--c-primary)}
.accordion-button:not(.collapsed) .acc-icon::after{background:var(--c-primary);transform:rotate(90deg);opacity:0}
.accordion-body{padding:0 22px 22px;font-size:14.5px;color:var(--c-ink-2);line-height:1.85}

/* ---------- CTA 条 ---------- */
.cta-bar{
  background:var(--c-dark);border-radius:var(--r-block);padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-bar::before{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:34px 34px;
}
.cta-bar > *{position:relative;z-index:2}
.cta-bar h2{color:#fff;font-size:26px}
.cta-bar p{color:rgba(234,242,238,.68);font-size:14px;margin-top:8px}

/* ---------- 交叉链接 ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cross-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);transition:transform .22s,box-shadow .22s,border-color .22s;
  display:flex;flex-direction:column;gap:10px;
}
.cross-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,190,138,.35)}
.cross-card h3{font-size:17px}
.cross-card p{font-size:13.5px;color:var(--c-ink-2);flex:1}
.cross-card .go{font-size:13.5px;font-weight:600;color:var(--c-primary-d)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1.5px solid transparent;line-height:1;cursor:pointer;
  transition:transform .2s,background .2s,color .2s,box-shadow .2s;box-shadow:none;
}
.btn:focus,.btn:focus-visible{outline:3px solid rgba(0,190,138,.35);outline-offset:2px;box-shadow:none}
.btn-main{background:var(--c-primary);color:#062018}
.btn-main:hover{background:var(--c-primary-d);color:#062018;transform:translateY(-2px)}
.btn-ink{background:var(--c-dark);color:#fff}
.btn-ink:hover{background:#050b09;color:#fff;transform:translateY(-2px)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#e85a2f;color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary-d)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-d);transform:translateY(-2px)}
.btn-sm-x{height:38px;padding:0 16px;font-size:14px}
.link-arrow{font-size:14px;font-weight:600;color:var(--c-primary-d);display:inline-flex;align-items:center;gap:6px}
.link-arrow::after{content:"→";transition:transform .2s}
.link-arrow:hover::after{transform:translateX(3px)}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--c-surface);border:1.5px solid var(--c-primary);color:var(--c-primary-d);
  display:flex;align-items:center;justify-content:center;font-size:18px;z-index:1050;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:.25s;cursor:pointer;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-primary-soft)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:#EAF2EE;margin-top:64px;padding:64px 0 28px}
.site-footer .wrap{padding:0 4px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.site-footer .brand{height:auto;padding:0;border:0;margin-bottom:16px}
.site-footer .brand-text{color:#fff}
.site-footer .brand-mark{box-shadow:none}
.footer-brand p{font-size:14px;color:rgba(234,242,238,.62);line-height:1.85;max-width:360px}
.footer-col h3{font-size:14px;color:var(--c-primary);letter-spacing:.06em;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(234,242,238,.72)}
.footer-col a:hover{color:var(--c-primary)}
.footer-col p{font-size:14px;color:rgba(234,242,238,.72);line-height:1.9}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--c-dark-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(234,242,238,.55);
}
.footer-bottom a{color:rgba(234,242,238,.72)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ---------- Offcanvas 移动导航 ---------- */
.offcanvas.offcanvas-mobile{width:86vw;max-width:340px;border-radius:0 20px 20px 0;border:0}
.offcanvas-mobile .offcanvas-header{border-bottom:1px solid var(--c-line);padding:18px 20px}
.offcanvas-mobile .offcanvas-body{padding:16px 14px}
.offcanvas-mobile .nav-item{height:52px;font-size:16px}
.oc-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-ink-2);font-size:20px;line-height:1;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.oc-close:hover{background:var(--c-surface-2)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .tl-wrap{grid-template-columns:minmax(0,1fr) 300px;gap:22px}
  .cross-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .side-nav{display:none}
  .mobile-bar{display:flex}
  .main{margin-left:0;padding:16px 16px 0}
  .sec{padding:56px 0}
  .cat-hero{padding:28px;min-height:220px;border-radius:18px}
  .cat-hero h1{font-size:28px}
  .tl-wrap{grid-template-columns:minmax(0,1fr)}
  .side-sticky{position:static}
  .media-split{grid-template-columns:minmax(0,1fr);gap:22px}
  .cta-bar{padding:32px 26px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
}
@media (max-width:767px){
  h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:18px}
  body{font-size:15.5px;line-height:1.85}
  .cat-hero h1{font-size:24px}
  .cat-hero .lead{font-size:15px}
  .sec{padding:48px 0}
  .flow{grid-template-columns:1fr}
  .cross-grid{grid-template-columns:1fr}
  .tl-item{grid-template-columns:76px 22px minmax(0,1fr)}
  .tl-day{font-size:22px}
  .tl-body{padding:18px}
}
@media (max-width:575px){
  .main{padding:12px 12px 0}
  .cat-hero{padding:22px}
  .btn{width:100%}
  .btn-auto{width:auto}
  .cta-bar .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .form-card{padding:20px}
}