/* roulang page: index */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#12564B;
  --brand-600:#0F6B5C;
  --brand-500:#17866F;
  --accent-500:#E8A33D;
  --accent-600:#C9821F;
  --ok:#2E8B57;
  --warn:#C0492F;
  --info:#3E6E8E;
  --bg:#F7F5F0;
  --bg-soft:#EFEDE6;
  --card:#FFFFFF;
  --ink-900:#16201E;
  --ink-700:#3A4744;
  --ink-500:#6B7A76;
  --line:#E2DED4;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(11,46,42,.06);
  --sh-2:0 6px 20px -8px rgba(11,46,42,.18);
  --sh-3:0 18px 40px -18px rgba(11,46,42,.28);
  --bs-primary:#0F6B5C;
  --bs-body-color:#3A4744;
  --bs-border-color:#E2DED4;
  --bs-border-radius:10px;
  --bs-link-color:#0F6B5C;
  --bs-link-hover-color:#C9821F;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent-600)}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.3em}
li{margin-bottom:.5em}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.section{padding:88px 0}
.section--soft{background:var(--bg-soft)}
.section--tight{padding:64px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);position:relative;padding-left:14px}
.sec-head h2::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:2px;background:var(--brand-600)}
.sec-head p{margin:8px 0 0;color:var(--ink-500);font-size:14px;max-width:640px}
.link-more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.link-more svg{transition:transform .2s ease}
.link-more:hover svg{transform:translateX(3px)}

/* 顶部细条 */
.topbar{background:var(--brand-900);color:rgba(255,255,255,.86);font-size:13px;line-height:28px}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar .tb-right{display:flex;align-items:center;gap:8px;white-space:nowrap}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent-500);display:inline-block;flex:0 0 auto}
.dot--ok{background:var(--ok)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:1040;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);transition:box-shadow .22s ease}
.site-header.is-scrolled{box-shadow:var(--sh-2);backdrop-filter:saturate(140%) blur(8px)}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink-900);font-weight:700;font-size:16px}
.brand:hover{color:var(--ink-900)}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--brand-600);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-mark svg{width:18px;height:18px;stroke:#fff}
.main-nav{display:flex;align-items:center;gap:22px;margin-left:8px;flex:1 1 auto;min-width:0}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--ink-700);padding:6px 0;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-19px;height:2px;background:transparent;transition:background .2s ease}
.nav-link:hover{color:var(--brand-600)}
.nav-link.active{color:var(--brand-700);font-weight:600}
.nav-link.active::after{background:var(--accent-500)}
.nav-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-search{position:relative;width:220px}
.nav-search input{width:100%;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;padding:0 36px 0 34px;font-size:14px;color:var(--ink-900)}
.nav-search input::placeholder{color:var(--ink-500)}
.nav-search input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(15,107,92,.14)}
.nav-search .ico{position:absolute;left:11px;top:50%;transform:translateY(-50%);width:16px;height:16px;stroke:var(--ink-500);pointer-events:none}
.nav-search button{position:absolute;right:6px;top:50%;transform:translateY(-50%);border:0;background:transparent;padding:6px;cursor:pointer;line-height:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease;white-space:nowrap}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--accent-500);color:#20301F;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--accent-600);color:#1A2820;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;border-color:var(--brand-600);color:var(--brand-600)}
.btn-outline:hover{background:rgba(15,107,92,.08);color:var(--brand-700)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-700)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700)}
.btn-block{width:100%}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;align-items:center;justify-content:center}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-900)}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:16px 0 22px}
.mobile-drawer.is-open{display:block}
.mobile-drawer .m-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:16px}
.mobile-drawer .m-nav a{padding:11px 4px;font-size:15px;font-weight:500;color:var(--ink-700);border-bottom:1px solid var(--line)}
.mobile-drawer .m-nav a.active{color:var(--brand-700);font-weight:600}
.mobile-drawer .m-search{position:relative;margin-bottom:14px}
.mobile-drawer .m-search input{width:100%;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 14px 0 38px;font-size:14px}
.mobile-drawer .m-search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;stroke:var(--ink-500)}
.mobile-drawer .m-actions{display:flex;gap:10px}
.mobile-drawer .m-actions .btn{flex:1}

/* Hero */
.hero{padding:72px 0 80px;background:linear-gradient(180deg,#FBFAF7 0%,var(--bg) 100%)}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--brand-700);background:rgba(15,107,92,.09);border:1px solid rgba(15,107,92,.18);border-radius:999px;padding:5px 12px;margin-bottom:18px}
.hero h1{font-size:clamp(30px,4vw,46px);line-height:1.25;letter-spacing:-.01em}
.hero .lead{margin-top:16px;font-size:17px;color:var(--ink-700);max-width:560px}
.hero-actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.hero-figs{display:flex;gap:32px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line);flex-wrap:wrap}
.hero-figs .fig strong{display:block;font-size:22px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums}
.hero-figs .fig span{font-size:13px;color:var(--ink-500)}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--line);box-shadow:var(--sh-2)}
.float-card{position:absolute;right:-14px;bottom:-22px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-3);padding:14px 18px;display:flex;gap:22px}
.float-card .fc{display:flex;flex-direction:column;gap:2px}
.float-card .fc b{font-size:20px;color:var(--brand-700);font-variant-numeric:tabular-nums}
.float-card .fc small{font-size:12px;color:var(--ink-500)}

/* 指标看板 */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease}
.metric:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(23,134,111,.35)}
.metric .m-label{font-size:13px;font-weight:600;color:var(--ink-500);letter-spacing:.02em}
.metric .m-num{font-size:36px;font-weight:700;line-height:1.2;margin:10px 0 6px;color:var(--brand-700);font-variant-numeric:tabular-nums}
.metric .m-num.is-accent{color:var(--accent-600)}
.metric .m-note{font-size:13px;color:var(--ink-500);display:flex;align-items:center;gap:7px}

/* 服务矩阵 */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff}
.svc-item{position:relative;border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 24px 24px;display:flex;flex-direction:column;gap:10px;min-height:186px;transition:background .22s ease}
.svc-item:hover{background:#FCFBF8}
.svc-item--lead{grid-column:span 2;background:rgba(15,107,92,.06)}
.svc-item--lead:hover{background:rgba(15,107,92,.1)}
.svc-no{font-size:13px;font-weight:700;color:var(--accent-600);letter-spacing:.06em;font-variant-numeric:tabular-nums}
.svc-item h3{font-size:20px}
.svc-item p{margin:0;font-size:14px;color:var(--ink-500);max-width:560px}
.svc-item .svc-go{margin-top:auto;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;color:var(--brand-600)}
.svc-item:hover .svc-go svg{transform:translateX(3px)}
.svc-go svg{transition:transform .2s ease}

/* 对比 */
.compare{display:grid;grid-template-columns:1fr 1px 1fr;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff}
.cmp-col{padding:30px 28px}
.cmp-col h3{font-size:20px;margin-bottom:6px}
.cmp-col .cmp-sub{font-size:13px;color:var(--ink-500);margin-bottom:18px}
.cmp-col ul{list-style:none;padding:0;margin:0}
.cmp-col li{display:flex;gap:10px;align-items:flex-start;font-size:15px;margin-bottom:12px}
.cmp-col li svg{flex:0 0 auto;margin-top:5px;width:16px;height:16px}
.cmp-before{background:#F1EFE9;color:var(--ink-500)}
.cmp-before h3{color:var(--ink-500)}
.cmp-before li svg{stroke:#A9A49A}
.cmp-divider{background:var(--line)}
.cmp-after{background:#fff}
.cmp-after h3{color:var(--brand-700)}
.cmp-after li{color:var(--ink-900);font-weight:500}
.cmp-after li svg{stroke:var(--accent-500)}

/* 最新信息 */
.post-list{display:flex;flex-direction:column;gap:18px}
.post-card{display:grid;grid-template-columns:40% 60%;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease}
.post-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(23,134,111,.35)}
.post-thumb{display:block;height:100%}
.post-thumb img{width:100%;height:100%;aspect-ratio:16/9;object-fit:cover}
.post-body{padding:22px 24px;display:flex;flex-direction:column;gap:10px}
.badge-soft{display:inline-flex;align-items:center;gap:6px;align-self:flex-start;font-size:12px;letter-spacing:.02em;font-weight:600;color:var(--brand-700);background:rgba(15,107,92,.1);border-radius:999px;padding:4px 10px}
.post-title{font-size:19px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-title a{color:var(--ink-900)}
.post-title a:hover{color:var(--brand-600)}
.post-sum{margin:0;font-size:14px;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-500);margin-top:auto}
.post-meta svg{width:14px;height:14px;stroke:var(--ink-500)}
.empty-state{max-width:480px;margin:0 auto;text-align:center;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);padding:40px 28px}
.empty-state svg{width:34px;height:34px;stroke:var(--ink-500);margin:0 auto 14px}
.empty-state p{margin:0 0 18px;color:var(--ink-500);font-size:15px}

/* 使用者反馈 */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.voice{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:26px 24px;display:flex;flex-direction:column;gap:14px;transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease}
.voice:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(23,134,111,.35)}
.voice .score{font-size:26px;font-weight:700;color:var(--accent-600);font-variant-numeric:tabular-nums;line-height:1}
.voice .score small{font-size:13px;color:var(--ink-500);font-weight:500;margin-left:4px}
.voice blockquote{margin:0;font-size:15px;color:var(--ink-700);line-height:1.7}
.voice .who{margin-top:auto;font-size:13px;color:var(--ink-500);display:flex;align-items:center;gap:8px}
.voice .who .dot{background:var(--brand-500)}

/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);margin-bottom:10px;overflow:hidden;position:relative;transition:border-color .2s ease}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;transition:background .25s ease}
.faq-item[open]{border-color:rgba(23,134,111,.3)}
.faq-item[open]::before{background:var(--accent-500)}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 56px 20px 22px;font-size:17px;font-weight:600;color:var(--ink-900);position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:focus{outline:none}
.faq-item summary:focus-visible{outline:2px solid var(--brand-600);outline-offset:-2px;border-radius:var(--r-card)}
.faq-item summary::after{content:"";position:absolute;right:22px;top:50%;width:14px;height:14px;margin-top:-7px;background:
  linear-gradient(currentColor,currentColor) center/14px 2px no-repeat,
  linear-gradient(currentColor,currentColor) center/2px 14px no-repeat;
  color:var(--brand-600);transition:transform .25s ease}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 22px 22px;font-size:15px;color:var(--ink-700)}
.faq-body p:last-child{margin-bottom:0}

/* 转化表单 */
.cta-dark{background:var(--brand-900);color:rgba(255,255,255,.88)}
.cta-dark h2,.cta-dark h3{color:#fff}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta-dark .cta-points{list-style:none;padding:0;margin:22px 0 0}
.cta-dark .cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;margin-bottom:12px;color:rgba(255,255,255,.88)}
.cta-dark .cta-points svg{flex:0 0 auto;margin-top:5px;width:16px;height:16px;stroke:var(--accent-500)}
.form-card{background:#fff;border-radius:16px;box-shadow:var(--sh-3);padding:28px}
.form-card h3{font-size:20px;color:var(--ink-900);margin-bottom:4px}
.form-card .fc-sub{font-size:13px;color:var(--ink-500);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-700);margin-bottom:6px}
.field label .req{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent-500);margin-left:6px;vertical-align:middle}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;font-size:15px;color:var(--ink-900);padding:11px 14px;transition:border-color .2s ease,box-shadow .2s ease}
.field input,.field select{height:44px;padding:0 14px}
.field textarea{min-height:92px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(15,107,92,.14)}
.field .hint{font-size:13px;color:var(--ink-500);margin-top:6px}

/* 页脚 */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.88);padding:64px 0 0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.site-footer a{color:rgba(255,255,255,.88);font-size:14px}
.site-footer a:hover{color:var(--accent-500)}
.foot-brand .brand{color:#fff;margin-bottom:14px}
.foot-brand .brand:hover{color:#fff}
.foot-brand p{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:18px;max-width:320px}
.foot-links{list-style:none;padding:0;margin:0}
.foot-links li{margin-bottom:10px}
.socials{display:flex;gap:10px}
.socials a{width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;transition:background .2s ease,border-color .2s ease}
.socials a:hover{background:rgba(255,255,255,.08);border-color:rgba(232,163,61,.5)}
.socials svg{width:18px;height:18px;stroke:currentColor}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6)}
.foot-bottom a{font-size:13px;color:rgba(255,255,255,.6)}
.foot-bottom a:hover{color:var(--accent-500)}

@media (min-width:1400px){
  :root{--container:1280px}
}
@media (max-width:1199px){
  .main-nav{gap:16px}
  .nav-search{width:180px}
  .hero-grid{gap:36px}
}
@media (max-width:991px){
  .main-nav,.nav-search,.nav-tools .btn-ghost,.nav-tools .btn-primary{display:none}
  .nav-toggle{display:flex}
  .hero{padding:48px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{order:2}
  .float-card{position:static;margin-top:16px;justify-content:flex-start;box-shadow:var(--sh-1)}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .svc-item--lead{grid-column:span 2}
  .compare{grid-template-columns:1fr;border-radius:var(--r-card)}
  .cmp-divider{height:1px;width:auto}
  .voice-grid{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:64px 0}
}
@media (max-width:767px){
  .hero-actions .btn{width:100%}
  .post-card{grid-template-columns:1fr}
  .post-thumb img{aspect-ratio:16/9}
  .metrics{gap:14px}
  .metric{padding:18px}
  .metric .m-num{font-size:30px}
}
@media (max-width:575px){
  body{font-size:15px}
  .container{padding:0 16px}
  .section{padding:48px 0}
  .sec-head{margin-bottom:24px}
  .svc-grid{grid-template-columns:1fr}
  .svc-item--lead{grid-column:span 1}
  .metrics{grid-template-columns:1fr 1fr;gap:12px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .form-card{padding:20px}
  .float-card{gap:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* roulang page: article */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#12564B;
  --brand-600:#0F6B5C;
  --brand-500:#17866F;
  --accent-500:#E8A33D;
  --accent-600:#C9821F;
  --ok:#2E8B57;
  --warn:#C0492F;
  --info:#3E6E8E;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --bg-soft:#EFEDE6;
  --ink-900:#16201E;
  --ink-700:#3A4744;
  --ink-500:#6B7A76;
  --line:#E2DED4;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(11,46,42,.06);
  --sh-2:0 6px 20px -8px rgba(11,46,42,.18);
  --sh-3:0 18px 40px -18px rgba(11,46,42,.28);
  --bs-primary:#0F6B5C;
  --bs-body-color:#3A4744;
  --bs-border-color:#E2DED4;
  --bs-border-radius:14px;
  --bs-link-color:#0F6B5C;
  --bs-link-hover-color:#C9821F;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-600);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--accent-600);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.num{font-family:ui-monospace,"DIN Alternate",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;}

/* ---------- 头部与导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,240,.92);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);background:rgba(255,255,255,.94);}
.nav-wrap{position:relative;display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--ink-900);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(160deg,var(--brand-700),var(--brand-500));
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.brand-mark svg{width:20px;height:20px;stroke:#F7F5F0;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.brand:hover{color:var(--brand-600);}
.nav-collapse{display:flex;flex:1;align-items:center;justify-content:space-between;gap:24px;min-width:0;}
.main-nav{display:flex;align-items:center;gap:22px;}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--ink-700);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--accent-500);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-700);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.search-box{position:relative;display:flex;align-items:center;}
.search-box svg{position:absolute;left:12px;width:18px;height:18px;stroke:var(--ink-500);pointer-events:none;}
.search-box input{
  width:220px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;padding:0 14px 0 38px;font-size:14px;color:var(--ink-900);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.search-box input::placeholder{color:var(--ink-500);}
.search-box input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(15,107,92,.14);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-primary-c{background:var(--accent-500);color:var(--brand-900);}
.btn-primary-c:hover{background:var(--accent-600);color:var(--brand-900);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary-c:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:var(--brand-600);color:var(--brand-600);}
.btn-ghost:hover{background:rgba(15,107,92,.08);color:var(--brand-700);border-color:var(--brand-700);}
.btn:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-900);}

/* ---------- 面包屑 ---------- */
.crumb-bar{border-bottom:1px solid var(--line);background:rgba(255,255,255,.6);}
.crumb-nav{display:flex;align-items:center;gap:8px;padding:14px 0;font-size:14px;color:var(--ink-500);flex-wrap:wrap;}
.crumb-nav a{color:var(--ink-500);}
.crumb-nav a:hover{color:var(--accent-600);}
.crumb-nav .sep{color:#C3BCAE;}
.crumb-cur{
  color:var(--ink-700);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:40px;
  padding:40px 0 80px;
  align-items:start;
}
.article-main{min-width:0;}
.article-shell{
  background:#FDFCF9;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:32px 36px 36px;
  box-shadow:var(--sh-1);
}
.article-head{border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:26px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(15,107,92,.10);color:var(--brand-700);
}
.badge-accent{background:rgba(232,163,61,.20);color:#8A5B12;}
.article-title{
  font-size:clamp(26px,3vw,38px);
  line-height:1.35;
  margin:14px 0 14px;
  letter-spacing:.005em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--ink-500);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3BCAE;}
.article-body{padding-top:4px;}
.prose{font-size:17px;line-height:1.8;color:var(--ink-700);}
.prose p{margin:0 0 1.1em;}
.prose h2{
  position:relative;
  font-size:clamp(20px,2.2vw,26px);
  margin:36px 0 14px;
  padding-left:14px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.26em;width:3px;height:1.02em;
  background:var(--brand-600);border-radius:2px;
}
.prose h2:first-child{margin-top:0;}
.prose h3{font-size:20px;font-weight:600;margin:26px 0 10px;}
.prose ul,.prose ol{padding-left:1.4em;margin:0 0 1.1em;}
.prose li{margin-bottom:8px;}
.prose blockquote{
  margin:24px 0;padding:16px 20px;
  border-left:4px solid var(--brand-600);
  background:var(--bg-soft);
  border-radius:12px;color:var(--ink-700);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{
  border-radius:var(--r-img);border:1px solid var(--line);
  margin:24px auto;width:100%;
}
.prose figure{margin:24px 0;}
.prose figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:8px;}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;display:block;overflow-x:auto;}
.prose th,.prose td{border:1px solid var(--line);padding:10px 12px;text-align:left;white-space:nowrap;}
.prose th{background:rgba(15,107,92,.08);color:var(--brand-700);font-weight:600;}
.prose pre{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;
  padding:16px;overflow-x:auto;font-size:14px;line-height:1.7;
}
.prose code{
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px;
  background:rgba(15,107,92,.07);padding:2px 6px;border-radius:6px;
}
.prose pre code{background:none;padding:0;}
.prose a{border-bottom:1px solid rgba(15,107,92,.35);}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:480px;margin:40px auto;text-align:center;
  padding:36px 24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
}
.empty-state svg{width:40px;height:40px;stroke:var(--brand-600);margin:0 auto 14px;}
.empty-state h3{font-size:19px;margin-bottom:8px;}
.empty-state p{font-size:15px;color:var(--ink-500);margin-bottom:18px;}

/* ---------- 文末 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:32px;}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--ink-700);
  transition:border-color .22s ease,color .22s ease,box-shadow .22s ease;
}
.tag:hover{border-color:var(--brand-500);color:var(--brand-700);box-shadow:var(--sh-1);}
.divider{height:1px;background:var(--line);margin:32px 0;}
.related-title{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px;}
.related-title h2{font-size:20px;position:relative;padding-left:12px;}
.related-title h2::before{
  content:"";position:absolute;left:0;top:.24em;width:3px;height:1em;background:var(--brand-600);border-radius:2px;
}
.related-list{display:grid;gap:14px;}
.mini-card{
  display:grid;grid-template-columns:38% 1fr;gap:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.mini-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(23,134,111,.45);}
.mini-card-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-soft);}
.mini-card-thumb img{width:100%;height:100%;object-fit:cover;}
.mini-card-body{padding:16px 18px;display:flex;flex-direction:column;gap:8px;min-width:0;}
.mini-card-body h3{
  font-size:16px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-card-meta{font-size:13px;color:var(--ink-500);display:flex;align-items:center;gap:6px;margin-top:auto;}
.mini-card-meta svg{width:15px;height:15px;stroke:var(--ink-500);}
.back-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:26px;
  font-size:15px;font-weight:600;color:var(--brand-600);
}
.back-link svg{width:18px;height:18px;stroke:currentColor;transition:transform .22s ease;}
.back-link:hover{color:var(--accent-600);}
.back-link:hover svg{transform:translateX(-3px);}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:88px;display:grid;gap:16px;}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);
}
.side-card h3{
  font-size:16px;margin-bottom:14px;position:relative;padding-left:12px;
}
.side-card h3::before{
  content:"";position:absolute;left:0;top:.24em;width:3px;height:1em;background:var(--brand-600);border-radius:2px;
}
.side-list{list-style:none;padding:0;display:grid;gap:12px;}
.side-list li{display:flex;gap:10px;font-size:14px;line-height:1.6;color:var(--ink-700);}
.side-list li .idx{color:var(--accent-600);font-weight:700;}
.side-links{list-style:none;padding:0;display:grid;gap:2px;}
.side-links a{
  display:block;padding:9px 0;font-size:14px;color:var(--ink-700);
  border-bottom:1px dashed var(--line);
}
.side-links li:last-child a{border-bottom:none;}
.side-links a:hover{color:var(--brand-600);}
.side-cta{
  background:var(--brand-900);border-color:transparent;color:rgba(255,255,255,.86);
}
.side-cta h3{color:#fff;}
.side-cta h3::before{background:var(--accent-500);}
.side-cta p{font-size:14px;line-height:1.7;color:rgba(255,255,255,.76);margin-bottom:16px;}
.side-cta .btn{width:100%;}
.side-cta .status{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-top:12px;}
.status-dot{width:6px;height:6px;border-radius:50%;background:var(--ok);display:inline-block;}
.status-dot.accent{background:var(--accent-500);}

/* ---------- 底部转化条 ---------- */
.cta-strip{background:var(--brand-900);border-radius:var(--r-card);padding:26px 28px;}
.cta-strip .inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.cta-strip h2{color:#fff;font-size:20px;margin-bottom:6px;}
.cta-strip p{color:rgba(255,255,255,.76);font-size:14px;}
.cta-section{padding:0 0 72px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.86);padding:64px 0 28px;margin-top:20px;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.foot-brand p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.72);margin:14px 0 16px;max-width:34ch;}
.site-footer .brand{color:#fff;}
.site-footer .brand:hover{color:var(--accent-500);}
.site-footer .brand-mark{background:rgba(255,255,255,.10);box-shadow:none;}
.site-footer .brand-mark svg{stroke:var(--accent-500);}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.foot-links{list-style:none;padding:0;display:grid;gap:10px;}
.foot-links a{font-size:14px;color:rgba(255,255,255,.86);}
.foot-links a:hover{color:var(--accent-500);}
.socials{display:flex;gap:10px;}
.socials a{
  width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.16);
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .22s ease,background .22s ease;
}
.socials a svg{width:18px;height:18px;stroke:rgba(255,255,255,.86);}
.socials a:hover{border-color:var(--accent-500);background:rgba(255,255,255,.06);}
.socials a:hover svg{stroke:var(--accent-500);}
.foot-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.60);
}
.foot-bottom a{color:rgba(255,255,255,.60);}
.foot-bottom a:hover{color:var(--accent-500);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:1fr;gap:32px;}
  .article-side{position:static;}
}
@media (max-width:991.98px){
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .nav-collapse{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
    flex-direction:column;align-items:stretch;gap:14px;padding:16px 20px 22px;
  }
  .nav-collapse.open{display:flex;}
  .main-nav{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-link{padding:11px 0;border-bottom:1px solid var(--line);font-size:15px;}
  .nav-link::after{display:none;}
  .nav-link.active{color:var(--brand-600);}
  .nav-actions{flex-direction:column;align-items:stretch;gap:10px;}
  .search-box input{width:100%;}
  .article-shell{padding:26px 22px 30px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767.98px){
  .article-layout{padding:28px 0 56px;}
  .mini-card{grid-template-columns:1fr;}
  .mini-card-thumb{aspect-ratio:16/9;}
  .cta-strip .inner{flex-direction:column;align-items:flex-start;}
  .cta-strip .btn{width:100%;}
}
@media (max-width:575.98px){
  .container{padding:0 16px;}
  body{font-size:15.5px;}
  .brand-text{font-size:15px;}
  .article-shell{padding:20px 16px 24px;}
  .prose{font-size:16px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#12564B;
  --brand-600:#0F6B5C;
  --brand-500:#17866F;
  --accent-500:#E8A33D;
  --accent-600:#C9821F;
  --ok:#2E8B57;
  --warn:#C0492F;
  --info:#3E6E8E;
  --bg:#F7F5F0;
  --bg-soft:#EFEDE6;
  --card:#FFFFFF;
  --ink-900:#16201E;
  --ink-700:#3A4744;
  --ink-500:#6B7A76;
  --line:#E2DED4;
  --line-dark:rgba(255,255,255,.12);
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(11,46,42,.06);
  --sh-2:0 6px 20px -8px rgba(11,46,42,.18);
  --sh-3:0 18px 40px -18px rgba(11,46,42,.28);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent-600)}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3}
p{margin:0 0 1.05em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(232,163,61,.32)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.container{max-width:1280px}}

/* ---------- topbar ---------- */
.topbar{background:var(--brand-900);color:rgba(255,255,255,.86);font-size:13px;line-height:28px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:28px}
.topbar-right{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.74)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--ok);display:inline-block;flex:0 0 auto}
.dot--accent{background:var(--accent-500)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(140%) blur(8px);
  -webkit-backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-2)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:64px}
.brand{display:inline-flex;align-items:center;gap:9px;color:var(--ink-900);font-weight:700;font-size:16px;letter-spacing:.01em;flex:0 0 auto}
.brand:hover{color:var(--brand-700)}
.brand-mark{
  width:32px;height:32px;flex:0 0 auto;border-radius:9px;
  background:var(--brand-700);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:19px;height:19px;stroke:currentColor;fill:none}
.main-nav{display:flex;align-items:center;gap:22px;margin-left:8px}
.nav-link{
  position:relative;color:var(--ink-700);font-size:14.5px;font-weight:500;
  padding:6px 1px;white-space:nowrap;
}
.nav-link:hover{color:var(--brand-600)}
.nav-link.active{color:var(--brand-700);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-19px;height:3px;
  background:var(--accent-500);border-radius:3px 3px 0 0;
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{position:relative;width:220px}
.nav-search svg{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  width:16px;height:16px;stroke:var(--ink-500);fill:none;pointer-events:none;
}
.nav-search input{
  width:100%;height:40px;border-radius:var(--r-input);
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
  font-size:14px;padding:0 12px 0 34px;outline:none;transition:border-color .2s,box-shadow .2s;
}
.nav-search input::placeholder{color:#9AA5A1}
.nav-search input:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(15,107,92,.14)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7}
.btn-accent{background:var(--accent-500);color:var(--brand-900)}
.btn-accent:hover{background:var(--accent-600);color:var(--brand-900);transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--brand-600);color:var(--brand-700)}
.btn-ghost:hover{background:rgba(23,134,111,.08);color:var(--brand-700)}
.btn-solid{background:var(--brand-700);color:#fff}
.btn-solid:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
  align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8}

.mobile-panel{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:16px 0 22px;
}
.mobile-panel.open{display:block}
.mobile-panel .m-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:16px}
.mobile-panel .m-nav a{
  color:var(--ink-900);font-size:15.5px;font-weight:500;
  padding:11px 2px;border-bottom:1px solid var(--line);
}
.mobile-panel .m-nav a.active{color:var(--brand-700);font-weight:600}
.mobile-search{position:relative;margin-bottom:14px}
.mobile-search input{width:100%;height:44px;border-radius:var(--r-input);border:1px solid var(--line);padding:0 12px;font-size:15px;outline:none}
.mobile-search input:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(15,107,92,.14)}
.mobile-actions{display:flex;flex-direction:column;gap:10px}

/* ---------- 通用区块 ---------- */
.section{padding:80px 0}
.section--soft{background:var(--bg-soft)}
.section--tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-title{position:relative;padding-left:14px;font-size:clamp(24px,2.6vw,34px);font-weight:700}
.section-title::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:3px;background:var(--brand-600);
}
.section-sub{margin-top:10px;color:var(--ink-500);font-size:15px;max-width:640px}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:14.5px}
.link-more svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;transition:transform .2s ease}
.link-more:hover svg{transform:translateX(3px)}

/* ---------- 面包屑 ---------- */
.crumb{padding:18px 0 0;font-size:14px;color:var(--ink-500)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.crumb li{display:inline-flex;align-items:center;gap:6px}
.crumb li+li::before{content:"›";color:#B6B0A4}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--accent-600)}
.crumb .current{color:var(--ink-700)}

/* ---------- 分类 Hero ---------- */
.cat-hero{background:var(--bg-soft);border-bottom:1px solid var(--line);padding:44px 0 64px}
.cat-hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--brand-700);background:rgba(23,134,111,.1);
  border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.eyebrow .dot{background:var(--brand-600)}
.cat-hero h1{font-size:clamp(30px,4vw,46px);line-height:1.25;margin-bottom:16px}
.cat-hero h1 em{font-style:normal;color:var(--brand-700)}
.cat-hero-lead{font-size:17px;color:var(--ink-700);max-width:520px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:var(--ink-700)}
.hero-points li{display:inline-flex;align-items:center;gap:8px}
.hero-points svg{width:16px;height:16px;stroke:var(--brand-600);fill:none;stroke-width:2}

.cat-hero-media{position:relative}
.cat-hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);box-shadow:var(--sh-2);
}
.float-card{
  position:absolute;left:-14px;bottom:-22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-3);padding:14px 18px;
  display:flex;gap:22px;
}
.float-card .fc-item{display:flex;flex-direction:column;gap:2px}
.float-card .fc-num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:22px;font-weight:700;color:var(--brand-700);line-height:1.2;
}
.float-card .fc-label{font-size:12.5px;color:var(--ink-500)}

/* ---------- 入口卡片网格 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.entry-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:12px;
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.entry-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(23,134,111,.45)}
.entry-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.entry-no{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:14px;font-weight:700;color:var(--brand-600);letter-spacing:.06em;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:999px;
  font-size:12px;line-height:1.4;letter-spacing:.02em;
  padding:4px 10px;background:rgba(23,134,111,.1);color:var(--brand-700);
}
.badge--accent{background:rgba(232,163,61,.2);color:#8A5A0E}
.badge--warn{background:rgba(192,73,47,.12);color:var(--warn)}
.badge .dot{background:currentColor}
.entry-card h3{font-size:20px}
.entry-card p{font-size:15px;color:var(--ink-700);margin:0}
.entry-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.entry-meta{font-size:13px;color:var(--ink-500)}
.entry-go{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14.5px;color:var(--brand-600)}
.entry-go svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.9;transition:transform .2s ease}
.entry-go:hover svg{transform:translateX(3px)}

/* ---------- 三步操作 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,transform .22s ease;
}
.step:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.step-no{
  width:40px;height:40px;border-radius:12px;background:rgba(23,134,111,.1);
  color:var(--brand-700);font-family:var(--mono);font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:19px;margin-bottom:8px}
.step p{font-size:15px;color:var(--ink-700);margin:0}
.step-note{margin-top:12px;font-size:13px;color:var(--ink-500);display:flex;gap:8px;align-items:flex-start}
.step-note svg{width:15px;height:15px;stroke:var(--brand-600);fill:none;stroke-width:1.8;flex:0 0 auto;margin-top:4px}

/* ---------- 指标看板 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.metric{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.metric-label{font-size:13px;color:var(--ink-500);letter-spacing:.02em;margin-bottom:6px}
.metric-num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:38px;font-weight:700;line-height:1.1;color:var(--brand-700);
  display:flex;align-items:baseline;gap:6px;
}
.metric-num span{font-size:15px;font-weight:600;color:var(--ink-500);font-family:var(--font)}
.metric-num.is-accent{color:var(--accent-600)}
.metric-desc{margin-top:8px;font-size:13.5px;color:var(--ink-500);display:flex;align-items:center;gap:8px}

/* ---------- 选择建议（对比两栏） ---------- */
.compare{
  display:grid;grid-template-columns:1fr 1fr;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
}
.compare-col{padding:30px 28px}
.compare-col+.compare-col{border-left:1px solid var(--line)}
.compare-col h3{font-size:19px;margin-bottom:14px}
.compare-tag{
  display:inline-block;font-size:12.5px;letter-spacing:.02em;
  padding:4px 10px;border-radius:999px;margin-bottom:14px;
}
.compare-tag.is-plain{background:#F0EEE7;color:var(--ink-500)}
.compare-tag.is-good{background:rgba(23,134,111,.12);color:var(--brand-700)}
.compare-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;
  padding:9px 0;border-bottom:1px dashed var(--line);
}
.compare-list li:last-child{border-bottom:0}
.compare-list svg{width:16px;height:16px;flex:0 0 auto;margin-top:5px;stroke-width:2;fill:none}
.compare-col.is-plain{background:#F4F2EC;color:var(--ink-500)}
.compare-col.is-plain .compare-list svg{stroke:#A8A296}
.compare-col.is-good .compare-list svg{stroke:var(--accent-600)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:10px;overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .22s ease;
}
.faq-item:hover{box-shadow:var(--sh-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;text-align:left;cursor:pointer;
  padding:18px 20px;font-size:17px;font-weight:600;color:var(--ink-900);
  position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--accent-500);border-radius:0 3px 3px 0;
  opacity:0;transition:opacity .22s ease;
}
.faq-item.open .faq-q::before{opacity:1}
.faq-sign{
  width:22px;height:22px;flex:0 0 auto;position:relative;
  transition:transform .25s ease;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:2px;
}
.faq-sign::before{left:0;right:0;top:10px;height:2px}
.faq-sign::after{top:0;bottom:0;left:10px;width:2px}
.faq-item.open .faq-sign{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 20px 20px;font-size:15.5px;color:var(--ink-700)}

/* ---------- 转化条 ---------- */
.cta-bar{background:var(--brand-900);color:rgba(255,255,255,.9);padding:28px 0}
.cta-bar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-bar p{margin:0;font-size:16px;color:rgba(255,255,255,.9)}
.cta-bar strong{color:#fff}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.88);padding:64px 0 0;font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.site-footer a{color:rgba(255,255,255,.88)}
.site-footer a:hover{color:var(--accent-500)}
.foot-brand .brand{color:#fff;margin-bottom:14px}
.foot-brand .brand-mark{background:rgba(255,255,255,.12)}
.foot-brand p{font-size:14px;color:rgba(255,255,255,.72);max-width:300px}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line-dark);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background-color .2s ease,border-color .2s ease;
}
.socials a:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.3)}
.socials svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7}
.foot-links li{margin-bottom:10px;line-height:1.5}
.foot-note{font-size:14px;color:rgba(255,255,255,.72)}
.foot-bottom{
  border-top:1px solid var(--line-dark);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.foot-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,.62)}

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

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  .container{max-width:1200px}
}
@media (max-width:1199px){
  .main-nav{gap:16px}
  .nav-search{width:190px}
}
@media (max-width:991px){
  .main-nav,.nav-search,.header-actions .btn-ghost,.header-actions .btn-accent{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{gap:16px}
  .hero-points{gap:8px 18px}
  .cat-hero-inner{grid-template-columns:1fr;gap:32px}
  .float-card{left:12px;bottom:-18px}
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr 1fr}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:64px 0}
}
@media (max-width:767px){
  .cat-hero{padding:32px 0 48px}
  .entry-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr}
  .compare-col+.compare-col{border-left:0;border-top:1px solid var(--line)}
  .section{padding:56px 0; }
  .hero-actions .btn{width:100%}
  .float-card{position:static;margin-top:14px;left:auto;bottom:auto;width:100%;justify-content:space-between}
  .cta-bar-inner{flex-direction:column;align-items:flex-start}
  .cta-bar .btn{width:100%}
}
@media (max-width:575px){
  body{font-size:16px}
  .container{padding:0 16px}
  .section{padding:48px 0}
  .entry-card,.step,.metric{padding:18px}
  .metric-grid{grid-template-columns:1fr 1fr}
  .metric-num{font-size:30px}
  .foot-grid{grid-template-columns:1fr}
  .faq-q{font-size:16px;padding:16px}
  .faq-a-inner{padding:0 16px 18px}
  .topbar-inner{flex-direction:column;align-items:flex-start;gap:2px;padding:4px 0}
}

/* roulang page: category2 */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#12564B;
  --brand-600:#0F6B5C;
  --brand-500:#17866F;
  --accent-500:#E8A33D;
  --accent-600:#C9821F;
  --ok:#2E8B57;
  --warn:#C0492F;
  --info:#3E6E8E;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --panel:#EFEDE6;
  --ink-900:#16201E;
  --ink-700:#3A4744;
  --ink-500:#6B7A76;
  --line:#E2DED4;
  --line-dark:rgba(255,255,255,.12);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(11,46,42,.06);
  --sh-2:0 6px 20px -8px rgba(11,46,42,.18);
  --sh-3:0 18px 40px -18px rgba(11,46,42,.28);
  --bs-primary:#0F6B5C;
  --bs-body-color:#16201E;
  --bs-border-color:#E2DED4;
  --bs-border-radius:10px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.75;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--accent-600);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media(min-width:1400px){.container{max-width:1280px;}}
::selection{background:rgba(232,163,61,.35);}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}

/* ---------- 顶部细条 ---------- */
.topbar{
  background:var(--brand-900);
  color:rgba(255,255,255,.82);
  font-size:13px;
  letter-spacing:.02em;
}
.topbar .container{
  min-height:28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:4px;
  padding-bottom:4px;
}
.topbar .tb-status{display:inline-flex;align-items:center;gap:8px;}
.dot{width:6px;height:6px;border-radius:999px;display:inline-block;background:var(--ok);}
.dot.amber{background:var(--accent-500);}
.dot.warn{background:var(--warn);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(140%) blur(8px);
  -webkit-backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-2);}
.nav-wrap{
  min-height:64px;
  display:flex;
  align-items:center;
  gap:18px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  flex-shrink:0;
  color:var(--ink-900);
  font-weight:700;
  font-size:16px;
  letter-spacing:.01em;
}
.brand:hover{color:var(--brand-700);}
.brand-mark{
  width:30px;height:30px;
  border-radius:9px;
  background:var(--brand-700);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
}
.brand-mark svg{width:18px;height:18px;stroke:#fff;}
.brand-text{white-space:nowrap;}
.main-nav{
  display:flex;
  align-items:center;
  gap:22px;
  margin-left:6px;
}
.main-nav .nav-link{
  position:relative;
  font-size:14.5px;
  font-weight:500;
  color:var(--ink-700);
  padding:20px 0;
  white-space:nowrap;
}
.main-nav .nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:14px;
  height:2px;
  border-radius:2px;
  background:var(--accent-500);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
}
.main-nav .nav-link:hover{color:var(--brand-700);}
.main-nav .nav-link:hover::after{transform:scaleX(1);}
.main-nav .nav-link.active{color:var(--brand-700);font-weight:600;}
.main-nav .nav-link.active::after{transform:scaleX(1);}
.nav-tools{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
}
.nav-search{
  position:relative;
  width:220px;
}
.nav-search svg{
  position:absolute;
  left:11px;top:50%;
  transform:translateY(-50%);
  width:16px;height:16px;
  stroke:var(--ink-500);
}
.nav-search input{
  width:100%;
  height:40px;
  padding:0 12px 0 34px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  color:var(--ink-900);
  font-size:14px;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.nav-search input::placeholder{color:var(--ink-500);}
.nav-search input:focus{
  outline:none;
  border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(15,107,92,.14);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s ease,background-color .22s ease,box-shadow .22s ease,color .22s ease,border-color .22s ease;
}
.btn:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-primary{
  background:var(--accent-500);
  color:#0B2E2A;
  box-shadow:var(--sh-1);
}
.btn-primary:hover{
  background:var(--accent-600);
  color:#0B2E2A;
  transform:translateY(-1px);
  box-shadow:var(--sh-2);
}
.btn-outline{
  background:#fff;
  border-color:var(--brand-600);
  color:var(--brand-700);
}
.btn-outline:hover{
  background:rgba(15,107,92,.08);
  color:var(--brand-700);
  transform:translateY(-1px);
}
.btn-ghost{
  background:transparent;
  color:var(--brand-700);
  padding:0 4px;
  height:auto;
  font-weight:600;
}
.btn-ghost:hover{color:var(--accent-600);}
.btn-block{width:100%;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-900);}
.search-toggle{display:none;}

/* ---------- 面包屑 ---------- */
.crumb-bar{
  border-bottom:1px solid var(--line);
  background:#fff;
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  font-size:14px;
  color:var(--ink-500);
  padding:14px 0;
}
.crumb a{color:var(--ink-500);}
.crumb a:hover{color:var(--accent-600);}
.crumb .sep{color:var(--line);}
.crumb .cur{color:var(--ink-700);}

/* ---------- 通用板块 ---------- */
.section{padding:76px 0;}
.section-tight{padding:56px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:34px;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.3;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--brand-600);
  font-weight:600;
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:3px;
  height:14px;
  border-radius:2px;
  background:var(--brand-600);
  display:inline-block;
}
.lead{color:var(--ink-700);font-size:17px;}

/* ---------- 页头 ---------- */
.page-head{
  background:
    linear-gradient(180deg,rgba(11,46,42,.92) 0%,rgba(11,46,42,.86) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;
  padding:64px 0 60px;
}
.page-head .eyebrow{color:rgba(255,255,255,.78);}
.page-head .eyebrow::before{background:var(--accent-500);}
.page-head h1{
  color:#fff;
  font-size:clamp(30px,4vw,46px);
  line-height:1.25;
  max-width:900px;
}
.page-head .sub{
  margin-top:16px;
  max-width:780px;
  color:rgba(255,255,255,.86);
  font-size:17px;
  line-height:1.75;
}
.head-metrics{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;
  margin-top:34px;
  max-width:840px;
}
.head-metric{
  border:1px solid var(--line-dark);
  border-radius:var(--r-card);
  padding:16px 18px;
  background:rgba(255,255,255,.06);
}
.head-metric .k{
  font-size:13px;
  color:rgba(255,255,255,.72);
  letter-spacing:.02em;
}
.head-metric .v{
  font-family:ui-monospace,"DIN Alternate",monospace;
  font-variant-numeric:tabular-nums;
  font-size:30px;
  font-weight:700;
  color:var(--accent-500);
  line-height:1.25;
  margin-top:4px;
}
.head-metric .n{
  font-size:13px;
  color:rgba(255,255,255,.62);
}

/* ---------- 锚点长文布局 ---------- */
.doc-layout{
  display:grid;
  grid-template-columns:248px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.toc{
  position:sticky;
  top:88px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:#fff;
  padding:22px 20px;
  box-shadow:var(--sh-1);
}
.toc h2{
  font-size:15px;
  font-weight:700;
  color:var(--ink-900);
  margin-bottom:14px;
  padding-left:11px;
  position:relative;
}
.toc h2::before{
  content:"";
  position:absolute;
  left:0;top:3px;bottom:3px;
  width:3px;border-radius:2px;
  background:var(--brand-600);
}
.toc ol{
  margin:0;
  padding:0;
  list-style:none;
  counter-reset:toc;
}
.toc li{counter-increment:toc;}
.toc a{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:9px 0;
  font-size:14.5px;
  color:var(--ink-700);
  border-bottom:1px dashed var(--line);
}
.toc li:last-child a{border-bottom:none;}
.toc a::before{
  content:counter(toc,decimal-leading-zero);
  font-family:ui-monospace,monospace;
  font-size:12px;
  color:var(--ink-500);
  padding-top:2px;
}
.toc a:hover{color:var(--brand-600);}
.toc-foot{
  margin-top:16px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--ink-500);
  line-height:1.65;
}

.doc-body{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:8px 40px 36px;
  box-shadow:var(--sh-1);
}
.doc-intro{
  padding:28px 0 24px;
  border-bottom:1px solid var(--line);
  color:var(--ink-700);
}
.doc-section{
  padding:32px 0 8px;
  border-bottom:1px solid var(--line);
  scroll-margin-top:96px;
}
.doc-section:last-of-type{border-bottom:none;}
.doc-section h2{
  font-size:clamp(21px,2.1vw,26px);
  line-height:1.4;
  padding-left:13px;
  position:relative;
  margin-bottom:16px;
}
.doc-section h2::before{
  content:"";
  position:absolute;
  left:0;top:4px;bottom:4px;
  width:3px;border-radius:2px;
  background:var(--brand-600);
}
.doc-section h3{
  font-size:19px;
  font-weight:600;
  margin:26px 0 10px;
}
.doc-section p{color:var(--ink-700);}
.ck-list{
  margin:18px 0 4px;
  display:grid;
  gap:10px;
}
.ck-list li{
  position:relative;
  padding-left:26px;
  color:var(--ink-700);
  font-size:16px;
}
.ck-list li::before{
  content:"";
  position:absolute;
  left:2px;top:10px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--brand-500);
}
.ck-list li b{color:var(--ink-900);font-weight:600;}
.note{
  margin:20px 0 8px;
  padding:16px 18px;
  border-left:4px solid var(--brand-600);
  background:var(--panel);
  border-radius:12px;
  font-size:15px;
  color:var(--ink-700);
}
.note.warn{
  border-left-color:var(--warn);
  background:rgba(192,73,47,.07);
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 11px;
  border-radius:999px;
  background:rgba(15,107,92,.09);
  color:var(--brand-700);
  font-size:12.5px;
  letter-spacing:.02em;
}
.tag.amber{background:rgba(232,163,61,.2);color:#8a5b10;}
.tag.dark{background:var(--brand-900);color:#fff;}

/* ---------- 指标卡 ---------- */
.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
}
.metric-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.metric-card:hover{
  box-shadow:var(--sh-2);
  transform:translateY(-2px);
  border-color:rgba(23,134,111,.4);
}
.metric-card .label{
  font-size:13px;
  color:var(--ink-500);
  letter-spacing:.02em;
}
.metric-card .num{
  font-family:ui-monospace,"DIN Alternate",monospace;
  font-variant-numeric:tabular-nums;
  font-size:36px;
  font-weight:700;
  line-height:1.2;
  color:var(--brand-700);
  margin:6px 0 2px;
}
.metric-card .num.amber{color:var(--accent-600);}
.metric-card .desc{
  font-size:13.5px;
  color:var(--ink-500);
  display:flex;
  align-items:center;
  gap:7px;
}
.panel-band{
  background:var(--panel);
  padding:64px 0;
}

/* ---------- 自检卡 ---------- */
.check-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
}
.check-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  display:flex;
  flex-direction:column;
  gap:12px;
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.check-card:hover{
  box-shadow:var(--sh-2);
  transform:translateY(-2px);
  border-color:rgba(23,134,111,.4);
}
.check-card .no{
  font-family:ui-monospace,monospace;
  font-size:13px;
  color:var(--ink-500);
  letter-spacing:.08em;
}
.check-card h3{font-size:19px;font-weight:600;}
.check-card p{font-size:15px;color:var(--ink-700);margin:0;}
.status{
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:26px;
  padding:0 11px;
  border-radius:999px;
  font-size:12.5px;
  letter-spacing:.02em;
  width:fit-content;
}
.status.ok{background:rgba(46,139,87,.12);color:#1f6b41;}
.status.amber{background:rgba(232,163,61,.2);color:#8a5b10;}
.status.warn{background:rgba(192,73,47,.12);color:#8f3521;}

/* ---------- 转化条 ---------- */
.cta-bar{
  background:var(--brand-900);
  color:#fff;
  padding:34px 0;
}
.cta-bar .inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.cta-bar .txt{font-size:17px;font-weight:600;color:#fff;}
.cta-bar .txt small{
  display:block;
  font-size:14px;
  font-weight:400;
  color:rgba(255,255,255,.72);
  margin-top:4px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.88);
  padding:60px 0 0;
  font-size:14.5px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:36px;
  padding-bottom:44px;
}
.site-footer .brand{color:#fff;font-size:16px;}
.site-footer .brand:hover{color:var(--accent-500);}
.site-footer .brand-mark{background:var(--accent-500);}
.site-footer .brand-mark svg{stroke:#0B2E2A;}
.foot-brand p{
  margin:16px 0 18px;
  color:rgba(255,255,255,.72);
  line-height:1.7;
  font-size:14.5px;
  max-width:360px;
}
.socials{display:flex;gap:10px;}
.socials a{
  width:36px;height:36px;
  border:1px solid var(--line-dark);
  border-radius:10px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:background-color .22s ease,border-color .22s ease;
}
.socials a svg{width:18px;height:18px;stroke:rgba(255,255,255,.82);}
.socials a:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.34);}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
}
.foot-links li{margin-bottom:10px;}
.foot-links a{
  color:rgba(255,255,255,.72);
  font-size:14px;
}
.foot-links a:hover{color:var(--accent-500);}
.foot-links span{font-size:14px;color:rgba(255,255,255,.72);}
.foot-bottom{
  border-top:1px solid var(--line-dark);
  padding:18px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.foot-bottom a{color:rgba(255,255,255,.6);}
.foot-bottom a:hover{color:var(--accent-500);}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(11,46,42,.45);
  opacity:0;
  pointer-events:none;
  transition:opacity .25s ease;
  z-index:1050;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:min(340px,88vw);
  background:#fff;
  border-radius:16px 0 0 16px;
  box-shadow:var(--sh-3);
  transform:translateX(102%);
  transition:transform .28s ease;
  z-index:1060;
  padding:22px 20px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer .drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:18px;
}
.drawer .drawer-head .t{font-weight:700;font-size:16px;}
.drawer .close-btn{
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.drawer .close-btn svg{width:18px;height:18px;stroke:var(--ink-900);}
.drawer nav{display:flex;flex-direction:column;gap:2px;margin-bottom:18px;}
.drawer nav a{
  padding:13px 12px;
  border-radius:10px;
  color:var(--ink-700);
  font-size:15px;
  font-weight:500;
}
.drawer nav a.active{background:rgba(15,107,92,.1);color:var(--brand-700);font-weight:600;}
.drawer nav a:hover{background:var(--panel);}
.drawer .drawer-search{margin-bottom:16px;}
.drawer .drawer-search input{
  width:100%;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  padding:0 14px;
  font-size:14px;
}
.drawer .drawer-search input:focus{
  outline:none;border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(15,107,92,.14);
}
.drawer .drawer-actions{display:grid;gap:10px;}

/* ---------- 响应式 ---------- */
@media(max-width:1199px){
  .doc-layout{grid-template-columns:210px minmax(0,1fr);gap:32px;}
  .doc-body{padding:8px 30px 30px;}
  .main-nav{gap:16px;}
  .nav-search{width:180px;}
}
@media(max-width:991px){
  .main-nav{display:none;}
  .nav-search,.nav-tools .btn-outline{display:none;}
  .nav-toggle{display:inline-flex;}
  .search-toggle{display:inline-flex;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;align-items:center;justify-content:center;cursor:pointer;}
  .search-toggle svg{width:18px;height:18px;stroke:var(--ink-900);}
  .doc-layout{grid-template-columns:minmax(0,1fr);gap:26px;}
  .toc{position:static;}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .head-metrics{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;}
  .head-metric .v{font-size:24px;}
}
@media(max-width:767px){
  body{font-size:16px;}
  .section{padding:48px 0;}
  .section-tight{padding:40px 0;}
  .panel-band{padding:48px 0;}
  .page-head{padding:46px 0 44px;}
  .head-metrics{grid-template-columns:repeat(2,minmax(0,1fr));}
  .doc-body{padding:6px 18px 24px;}
  .doc-section{padding:26px 0 6px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .cta-bar .inner{flex-direction:column;align-items:flex-start;}
  .cta-bar .btn{width:100%;}
  .metric-card{padding:18px;}
  .check-card{padding:18px;}
  .check-grid{grid-template-columns:minmax(0,1fr);}
  .foot-grid{grid-template-columns:minmax(0,1fr);}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}
@media(max-width:520px){
  .container{padding:0 16px;}
  .head-metrics{grid-template-columns:minmax(0,1fr);}
  .metric-grid{grid-template-columns:minmax(0,1fr);}
  .brand-text{font-size:15px;}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#12564B;
  --brand-600:#0F6B5C;
  --brand-500:#17866F;
  --accent-500:#E8A33D;
  --accent-600:#C9821F;
  --ok:#2E8B57;
  --warn:#C0492F;
  --info:#3E6E8E;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --bg-soft:#EFEDE6;
  --ink-900:#16201E;
  --ink-700:#3A4744;
  --ink-500:#6B7A76;
  --line:#E2DED4;
  --sh-1:0 1px 2px rgba(11,46,42,.06);
  --sh-2:0 6px 20px -8px rgba(11,46,42,.18);
  --sh-3:0 18px 40px -18px rgba(11,46,42,.28);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --bs-body-color:#16201E;
  --bs-border-color:#E2DED4;
  --bs-primary:#0F6B5C;
  --bs-border-radius:10px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.75;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--accent-600);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;letter-spacing:.01em;}
h1{font-size:clamp(30px,4vw,46px);line-height:1.25;}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;}
h3{font-size:21px;line-height:1.4;font-weight:600;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ---------- top bar ---------- */
.topbar{background:var(--brand-900);color:rgba(255,255,255,.82);font-size:13px;line-height:28px;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.topbar .tk-left{display:flex;align-items:center;gap:8px;}
.topbar .tk-right{display:flex;align-items:center;gap:8px;}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent-500);display:inline-block;flex:0 0 auto;}
.dot.ok{background:var(--ok);}
.dot.warn{background:var(--warn);}
.dot.info{background:var(--info);}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,245,240,.86);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(8px);
  transition:box-shadow .24s ease,background .24s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-2);background:rgba(255,255,255,.86);}
.header-inner{display:flex;align-items:center;gap:22px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink-900);}
.brand:hover{color:var(--brand-600);}
.brand-mark{
  width:34px;height:34px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(150deg,var(--brand-700),var(--brand-500));
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-1);
}
.brand-mark svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:22px;margin-left:8px;}
.main-nav .nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-700);
  padding:6px 0;background:none;border:0;
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--accent-500);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.main-nav .nav-link:hover{color:var(--brand-600);}
.main-nav .nav-link:hover::after{transform:scaleX(1);}
.main-nav .nav-link.active{color:var(--brand-700);font-weight:700;}
.main-nav .nav-link.active::after{transform:scaleX(1);}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.search-box{position:relative;}
.search-box svg{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;stroke:var(--ink-500);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;
}
.search-box input{
  width:220px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;padding:0 12px 0 38px;font-size:14px;color:var(--ink-900);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box input::placeholder{color:var(--ink-500);}
.search-box input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(15,107,92,.14);}
.btn-ghost,.btn-accent,.btn-outline-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .18s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.btn-accent{background:var(--accent-500);color:#123B33;box-shadow:var(--sh-1);}
.btn-accent:hover{background:var(--accent-600);color:#0B2E2A;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:translateY(0);}
.btn-outline-brand{background:#fff;border-color:var(--brand-600);color:var(--brand-700);}
.btn-outline-brand:hover{background:rgba(15,107,92,.08);color:var(--brand-700);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-700);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700);background:#fff;}
.header-tools .btn-compact{height:40px;padding:0 16px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-700);fill:none;stroke-width:1.8;stroke-linecap:round;}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;padding:18px 0 24px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer .main-nav{display:flex;flex-direction:column;align-items:stretch;gap:2px;margin:0;}
.mobile-drawer .main-nav .nav-link{padding:12px 4px;border-bottom:1px solid var(--line);font-size:15px;}
.mobile-drawer .main-nav .nav-link::after{display:none;}
.mobile-drawer .drawer-tools{display:flex;flex-direction:column;gap:12px;margin-top:18px;}
.mobile-drawer .search-box input{width:100%;}

/* ---------- page hero ---------- */
.page-hero{padding:44px 0 68px;background:var(--bg-soft);border-bottom:1px solid var(--line);}
.crumbs{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-500);margin-bottom:22px;flex-wrap:wrap;}
.crumbs a{color:var(--ink-500);}
.crumbs a:hover{color:var(--accent-600);}
.crumbs .sep{color:#B9B2A4;}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:40px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-700);
  background:rgba(15,107,92,.08);border:1px solid rgba(15,107,92,.18);
  border-radius:999px;padding:5px 14px;margin-bottom:18px;letter-spacing:.02em;
}
.hero-sub{font-size:17px;color:var(--ink-700);max-width:34em;margin-top:16px;}
.hero-actions{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap;}
.hero-facts{display:flex;gap:28px;margin-top:30px;flex-wrap:wrap;}
.hero-facts .fact{min-width:96px;}
.hero-facts .fact b{
  display:block;font-size:22px;font-weight:700;color:var(--brand-700);
  font-family:ui-monospace,"DIN Alternate",system-ui,sans-serif;font-variant-numeric:tabular-nums;
}
.hero-facts .fact span{font-size:13px;color:var(--ink-500);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
.hero-media .float-card{
  position:absolute;left:-18px;bottom:-22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-3);padding:16px 18px;min-width:200px;
}
.hero-media .float-card .lbl{font-size:12px;color:var(--ink-500);letter-spacing:.02em;}
.hero-media .float-card .row{display:flex;gap:20px;margin-top:8px;}
.hero-media .float-card .row b{
  font-size:20px;color:var(--accent-600);font-family:ui-monospace,"DIN Alternate",system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
}
.hero-media .float-card .row i{display:block;font-size:12px;color:var(--ink-500);font-style:normal;}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section.tight{padding:72px 0;}
.section.soft{background:var(--bg-soft);}
.section.dark{background:var(--brand-900);color:rgba(255,255,255,.88);}
.section.dark h2,.section.dark h3{color:#fff;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-title{position:relative;padding-left:16px;}
.section-title::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:2px;background:var(--brand-600);
}
.section-head p{margin-top:14px;color:var(--ink-700);font-size:16px;}
.section.dark .section-head p{color:rgba(255,255,255,.75);}

/* ---------- timeline ---------- */
.timeline{position:relative;padding:8px 0 8px;}
.timeline::before{
  content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;margin-left:-1px;
  background:linear-gradient(180deg,rgba(15,107,92,.35),rgba(15,107,92,.14));
}
.tl-item{position:relative;width:50%;padding:0 56px 40px 0;}
.tl-item:nth-child(even){margin-left:50%;padding:0 0 40px 56px;}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:24px;transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.tl-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(23,134,111,.45);}
.tl-step{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.04em;
  color:var(--brand-700);background:rgba(15,107,92,.09);border-radius:999px;padding:4px 12px;margin-bottom:14px;
  font-family:ui-monospace,"DIN Alternate",system-ui,sans-serif;
}
.tl-card h3{margin-bottom:10px;}
.tl-card p{font-size:15.5px;color:var(--ink-700);}
.tl-card img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);margin-top:16px;
}
.tl-dot{
  position:absolute;top:24px;right:-9px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--brand-600);box-shadow:0 0 0 4px rgba(15,107,92,.10);
}
.tl-item:nth-child(even) .tl-dot{right:auto;left:-9px;}

/* ---------- device cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:24px;transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;height:100%;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(23,134,111,.45);}
.card h3{margin-bottom:10px;}
.card p{font-size:15.5px;color:var(--ink-700);}
.card-icon{
  width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:rgba(15,107,92,.09);margin-bottom:18px;
}
.card-icon svg{width:22px;height:22px;stroke:var(--brand-700);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.02em;font-weight:600;
  border-radius:999px;padding:4px 12px;background:rgba(15,107,92,.09);color:var(--brand-700);
}
.badge.accent{background:rgba(232,163,61,.18);color:#8A5A0B;}
.badge.line{background:transparent;border:1px solid var(--line);color:var(--ink-500);}
.card .badge{align-self:flex-start;}
.card-foot{margin-top:auto;padding-top:18px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-600);}
.text-link svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s ease;}
.text-link:hover{color:var(--accent-600);}
.text-link:hover svg{transform:translateX(3px);}

/* ---------- checklist ---------- */
.checklist li{position:relative;padding-left:30px;margin-bottom:14px;color:var(--ink-700);font-size:15.5px;}
.checklist li::before{
  content:"";position:absolute;left:0;top:.62em;width:16px;height:16px;border-radius:50%;
  background:rgba(46,139,87,.12);
}
.checklist li::after{
  content:"";position:absolute;left:5px;top:calc(.62em + 4px);width:6px;height:3px;
  border-left:2px solid var(--ok);border-bottom:2px solid var(--ok);transform:rotate(-45deg);
}
.dark .checklist li{color:rgba(255,255,255,.82);}
.dark .checklist li::before{background:rgba(255,255,255,.14);}
.dark .checklist li::after{border-color:var(--accent-500);}
.warn-list li{position:relative;padding-left:26px;margin-bottom:12px;font-size:15.5px;color:var(--ink-700);}
.warn-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:3px;background:var(--accent-500);
}
.panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:28px;
}
.panel.soft{background:var(--bg-soft);}
.split{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff;}
.split > div{padding:32px;}
.split .before{background:#F2F1EC;border-right:1px solid var(--line);}
.split .before h3,.split .before li{color:var(--ink-500);}
.split .after h3{color:var(--brand-700);}
.split h3{margin-bottom:16px;font-size:20px;}
.split ul li{position:relative;padding-left:24px;margin-bottom:12px;font-size:15.5px;}

/* ---------- faq ---------- */
.faq-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:10px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item[open]{border-color:rgba(15,107,92,.35);box-shadow:var(--sh-2);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 24px;position:relative;
  font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";position:absolute;right:24px;top:24px;width:16px;height:16px;
  background:
    linear-gradient(var(--brand-600),var(--brand-600)) center/16px 2px no-repeat,
    linear-gradient(var(--brand-600),var(--brand-600)) center/2px 16px no-repeat;
  transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item summary:focus-visible{outline:2px solid var(--brand-600);outline-offset:-2px;}
.faq-item .faq-body{padding:0 24px 22px;border-left:3px solid transparent;transition:border-color .25s ease;}
.faq-item[open] .faq-body{border-left-color:var(--accent-500);}
.faq-item .faq-body p{font-size:15.5px;color:var(--ink-700);}

/* ---------- cta bar ---------- */
.cta-bar{background:var(--brand-900);color:rgba(255,255,255,.88);padding:34px 0;}
.cta-bar .inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.cta-bar p{margin:0;font-size:16.5px;color:rgba(255,255,255,.9);}
.cta-bar .note{font-size:13px;color:rgba(255,255,255,.62);margin-top:6px;}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.88);padding:64px 0 0;font-size:15px;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:44px;}
.site-footer .brand{color:#fff;}
.site-footer .brand:hover{color:var(--accent-500);}
.site-footer .brand-text{color:#fff;}
.foot-brand p{margin-top:16px;color:rgba(255,255,255,.72);font-size:14.5px;max-width:34em;line-height:1.8;}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{
  width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;transition:border-color .22s ease,background .22s ease;
}
.socials a svg{width:18px;height:18px;stroke:rgba(255,255,255,.8);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.socials a:hover{border-color:var(--accent-500);background:rgba(232,163,61,.12);}
.socials a:hover svg{stroke:var(--accent-500);}
.site-footer h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px;}
.foot-links li{margin-bottom:11px;}
.foot-links a{color:rgba(255,255,255,.76);font-size:14.5px;}
.foot-links a:hover{color:var(--accent-500);}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.foot-bottom a{color:rgba(255,255,255,.72);}
.foot-bottom a:hover{color:var(--accent-500);}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .main-nav{gap:18px;}
  .search-box input{width:180px;}
  .hero-grid{gap:32px;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .header-tools .search-box{display:none;}
  .header-tools .btn-compact.login{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-media{margin-top:32px;}
  .hero-media .float-card{left:auto;right:12px;bottom:-18px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .section{padding:64px 0;}
  .section.tight{padding:56px 0;}
  .split{grid-template-columns:1fr;}
  .split .before{border-right:0;border-bottom:1px solid var(--line);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .header-inner{height:60px;}
  .brand-text{font-size:15px;}
  .grid-3,.grid-2{grid-template-columns:1fr;}
  .timeline::before{left:9px;margin-left:0;}
  .tl-item,.tl-item:nth-child(even){width:100%;margin-left:0;padding:0 0 28px 36px;}
  .tl-dot,.tl-item:nth-child(even) .tl-dot{left:-2px;right:auto;top:26px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn-accent,.hero-actions .btn-outline-brand{width:100%;}
  .hero-facts{gap:20px;}
  .faq-item summary{padding:18px 52px 18px 18px;font-size:16px;}
  .faq-item .faq-body{padding:0 18px 20px;}
  .panel,.card,.tl-card{padding:20px;}
  .foot-grid{grid-template-columns:1fr;}
  .cta-bar .inner{flex-direction:column;align-items:flex-start;}
  .cta-bar .btn-accent{width:100%;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section.tight{padding:48px 0;}
  .card,.tl-card,.panel{padding:18px;}
  .hero-media .float-card{position:static;margin-top:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  .card:hover,.tl-card:hover{transform:none;}
}

/* roulang page: category4 */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#12564B;
  --brand-600:#0F6B5C;
  --brand-500:#17866F;
  --accent-500:#E8A33D;
  --accent-600:#C9821F;
  --ok:#2E8B57;
  --warn:#C0492F;
  --info:#3E6E8E;
  --bg:#F7F5F0;
  --bg-soft:#EFEDE6;
  --card:#FFFFFF;
  --ink-900:#16201E;
  --ink-700:#3A4744;
  --ink-500:#6B7A76;
  --line:#E2DED4;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,46,42,.06);
  --sh-2:0 6px 20px -8px rgba(11,46,42,.18);
  --sh-3:0 18px 40px -18px rgba(11,46,42,.28);
  --bs-primary:#0F6B5C;
  --bs-body-color:#3A4744;
  --bs-border-color:#E2DED4;
  --bs-border-radius:14px;
  --bs-link-color:#0F6B5C;
  --bs-link-hover-color:#17866F;
  --bs-body-font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.75;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--accent-500)}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;line-height:1.3}
h1{font-size:clamp(30px,4vw,44px);line-height:1.25;letter-spacing:-.01em}
h2{font-size:clamp(24px,2.6vw,32px)}
h3{font-size:21px;font-weight:600;line-height:1.4}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.container{max-width:1280px}}

/* ===== 顶部细条 ===== */
.topbar{background:var(--brand-900);color:rgba(255,255,255,.88);font-size:13px;letter-spacing:.02em}
.topbar .inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:32px}
.topbar .left{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar .right{display:flex;align-items:center;gap:8px;white-space:nowrap}
.dot{width:6px;height:6px;border-radius:50%;display:inline-block;background:var(--ok);flex:0 0 auto}
.dot.amber{background:var(--accent-500)}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(140%) blur(8px);
  -webkit-backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-2)}
.nav-wrap{display:flex;align-items:center;gap:24px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-900);flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;stroke:var(--accent-500);fill:none}
.brand-text{font-size:16px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:22px;margin-left:8px}
.nav-link{
  position:relative;font-size:14.5px;font-weight:500;color:var(--ink-700);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--accent-500);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-700);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-side{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-box{position:relative;width:220px}
.search-box svg{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  width:16px;height:16px;stroke:var(--ink-500);fill:none;
}
.search-box input{
  width:100%;height:40px;border-radius:var(--r-input);
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
  font-size:14px;padding:0 12px 0 34px;transition:border-color .22s ease,box-shadow .22s ease;
}
.search-box input::placeholder{color:var(--ink-500)}
.search-box input:focus{
  outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(15,107,92,.14);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .22s ease,background-color .22s ease,box-shadow .22s ease,border-color .22s ease,color .22s ease;
}
.btn:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px}
.btn-primary{background:var(--accent-500);color:#0B2E2A;border-color:var(--accent-500)}
.btn-primary:hover{background:var(--accent-600);border-color:var(--accent-600);color:#0B2E2A;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:var(--brand-600)}
.btn-ghost:hover{background:rgba(15,107,92,.08);color:var(--brand-700);transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);
}
.text-link svg{width:16px;height:16px;stroke:currentColor;fill:none;transition:transform .22s ease}
.text-link:hover svg{transform:translateX(2px)}
.hamburger{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.hamburger svg{width:20px;height:20px;stroke:var(--ink-900);fill:none}
.nav-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;padding:14px 0 18px;
}
.nav-drawer.open{display:block}
.nav-drawer .drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:14px}
.nav-drawer .drawer-links a{padding:11px 4px;font-size:15px;font-weight:500;color:var(--ink-700);border-bottom:1px solid var(--line)}
.nav-drawer .drawer-links a.active{color:var(--brand-700);font-weight:600}
.nav-drawer .drawer-actions{display:flex;flex-direction:column;gap:10px}
.mobile-search{display:flex;position:relative;margin-bottom:12px}
.mobile-search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;stroke:var(--ink-500);fill:none}
.mobile-search input{
  width:100%;height:44px;border-radius:var(--r-input);border:1px solid var(--line);
  padding:0 12px 0 34px;font-size:14px;background:var(--bg);
}

/* ===== 面包屑 ===== */
.crumb{padding:20px 0 0;font-size:14px;color:var(--ink-500)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--accent-500)}
.crumb .sep{color:#C7C1B4}
.crumb .now{color:var(--ink-700);font-weight:500}

/* ===== 通用板块 ===== */
.section{padding:64px 0}
.section.tight{padding:48px 0}
.section-soft{background:var(--bg-soft)}
.section-dark{background:var(--brand-900);color:rgba(255,255,255,.88)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-head h2{position:relative;padding-left:14px}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:2px;background:var(--brand-600);
}
.sec-head .sub{font-size:14.5px;color:var(--ink-500);margin-top:6px}
.kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;
  color:var(--brand-600);letter-spacing:.04em;margin-bottom:12px;
}
.kicker::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent-500);display:inline-block}

/* ===== Hero ===== */
.hero{background:var(--bg-soft);border-bottom:1px solid var(--line);padding:56px 0 56px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{margin-bottom:16px}
.hero .lede{font-size:17px;color:var(--ink-700);max-width:560px;margin-bottom:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
.float-card{
  position:absolute;left:-18px;bottom:-20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-2);padding:14px 18px;display:flex;gap:22px;
}
.float-card .fc-item{display:flex;flex-direction:column;gap:2px}
.float-card .fc-num{
  font-size:22px;font-weight:700;color:var(--brand-600);
  font-variant-numeric:tabular-nums;font-family:ui-monospace,"DIN Alternate",monospace;
}
.float-card .fc-lab{font-size:12px;color:var(--ink-500)}

/* 徽章 */
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-pill);
  padding:5px 12px;font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:rgba(15,107,92,.10);color:var(--brand-700);border:1px solid rgba(15,107,92,.16);
}
.badge-pill.amber{background:rgba(232,163,61,.18);color:#8A5A11;border-color:rgba(232,163,61,.4)}
.badge-pill.warn{background:rgba(192,73,47,.12);color:var(--warn);border-color:rgba(192,73,47,.28)}
.badge-pill.info{background:rgba(62,110,142,.12);color:var(--info);border-color:rgba(62,110,142,.26)}
.badge-pill .dot{width:6px;height:6px}

/* ===== 筛选胶囊 ===== */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;
  color:var(--ink-700);font-size:14px;font-weight:500;cursor:pointer;transition:all .22s ease;
}
.chip:hover{border-color:var(--brand-500);color:var(--brand-700)}
.chip.active{background:var(--brand-900);border-color:var(--brand-900);color:#fff;font-weight:600}
.chip .count{
  font-size:12px;padding:1px 7px;border-radius:var(--r-pill);background:rgba(15,107,92,.10);color:var(--brand-700);
}
.chip.active .count{background:rgba(255,255,255,.18);color:#fff}

/* ===== FAQ 双列 ===== */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;align-items:start}
.faq-item{
  background:#fff;border:1px solid var(--line);border-left:3px solid transparent;
  border-radius:var(--r-card);box-shadow:var(--sh-1);transition:box-shadow .22s ease,border-color .22s ease;
}
.faq-item:hover{box-shadow:var(--sh-2);border-color:rgba(23,134,111,.35)}
.faq-item[open]{border-left-color:var(--accent-500);box-shadow:var(--sh-2)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:14px;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";margin-left:auto;flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--bg-soft);color:var(--brand-700);font-size:16px;font-weight:600;line-height:1;
  transition:transform .25s ease,background-color .25s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);background:rgba(232,163,61,.28);color:#8A5A11}
.faq-body{padding:0 22px 20px;font-size:15.5px;color:var(--ink-700)}
.faq-body p{margin-bottom:12px}
.faq-body ul{display:flex;flex-direction:column;gap:8px;margin:12px 0}
.faq-body li{position:relative;padding-left:18px;font-size:15px}
.faq-body li::before{
  content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:2px;background:var(--brand-500);
}
.faq-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

/* ===== 排查路径 ===== */
.path-wrap{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.figure-block{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-2);background:#fff;
}
.figure-block img{width:100%;aspect-ratio:16/10;object-fit:cover}
.steps{display:flex;flex-direction:column;gap:0}
.step{
  display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line);
}
.step:last-child{border-bottom:none}
.step-no{
  flex:0 0 auto;width:42px;height:42px;border-radius:12px;background:var(--bg-soft);
  color:var(--brand-700);font-weight:700;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;font-family:ui-monospace,"DIN Alternate",monospace;font-size:16px;
}
.step h3{font-size:17px;margin-bottom:6px}
.step p{font-size:15px;color:var(--ink-700);margin:0}

/* ===== 支持渠道卡 ===== */
.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.info-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:24px;display:flex;flex-direction:column;gap:12px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(23,134,111,.35)}
.info-card .ico{
  width:44px;height:44px;border-radius:12px;background:rgba(15,107,92,.10);
  display:flex;align-items:center;justify-content:center;
}
.info-card .ico svg{width:22px;height:22px;stroke:var(--brand-700);fill:none}
.info-card h3{font-size:18px}
.info-card p{font-size:14.5px;color:var(--ink-700);margin:0}
.info-card .text-link{margin-top:auto}

/* ===== 数据卡 ===== */
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:24px;display:flex;flex-direction:column;gap:8px;
}
.stat-card .lab{font-size:13px;font-weight:600;color:var(--ink-500);letter-spacing:.02em}
.stat-card .num{
  font-size:36px;font-weight:700;color:var(--accent-600);line-height:1.1;
  font-family:ui-monospace,"DIN Alternate",monospace;font-variant-numeric:tabular-nums;
}
.stat-card .num.green{color:var(--brand-600)}
.stat-card .note{font-size:13px;color:var(--ink-500);line-height:1.6}
.stat-card .status{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--ink-500);margin-top:4px}

/* ===== 转化条 ===== */
.cta-bar{background:var(--brand-900);color:rgba(255,255,255,.9);padding:28px 0}
.cta-bar .inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.cta-bar p{margin:0;font-size:16px}
.cta-bar .strong{color:#fff;font-weight:600}

/* ===== 页脚 ===== */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.88);padding:64px 0 0;font-size:14.5px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:40px}
.site-footer .brand-text{color:#fff}
.site-footer p{color:rgba(255,255,255,.72);font-size:14px;margin:16px 0 18px;max-width:340px}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{color:rgba(255,255,255,.88)}
.foot-links a:hover{color:var(--accent-500)}
.socials{display:flex;gap:10px}
.socials a{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);
}
.socials a:hover{border-color:var(--accent-500)}
.socials svg{width:18px;height:18px;stroke:rgba(255,255,255,.88);fill:none}
.socials a:hover svg{stroke:var(--accent-500)}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.62);
}
.foot-bottom a{color:rgba(255,255,255,.62)}
.foot-bottom a:hover{color:var(--accent-500)}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .main-nav{gap:16px}
  .search-box{width:180px}
}
@media (max-width:991px){
  .main-nav,.nav-side .search-box,.nav-side .btn-ghost{display:none}
  .hamburger{display:inline-flex}
  .nav-wrap{justify-content:space-between}
  .hero-grid,.path-wrap{grid-template-columns:1fr;gap:32px}
  .hero-media{order:2}
  .float-card{left:auto;right:14px;bottom:-18px}
  .card-grid,.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section{padding:64px 0}
}
@media (max-width:767px){
  body{font-size:16px}
  .faq-grid{grid-template-columns:1fr}
  .card-grid,.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:575px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .hero{padding:40px 0}
  .card-grid,.stats-grid{grid-template-columns:1fr}
  .info-card{padding:18px}
  .stat-card{padding:18px}
  .stat-card .num{font-size:30px}
  .faq-item summary{padding:16px 16px;font-size:16px}
  .faq-body{padding:0 16px 18px}
  .hero-actions .btn{width:100%}
  .float-card{position:static;margin-top:14px;justify-content:space-around}
  .topbar .right{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}