/* roulang page: index */
:root{
  --ink:#0C3A33; --ink-900:#072722; --ink-100:#E7F0EC;
  --accent:#FF6A2B; --accent-dark:#E85A1D;
  --aqua:#17C3A2; --bg:#F6F8F5; --surface:#FFFFFF; --line:#E2E8E3;
  --text:#1A2321; --text-2:#5C6B66; --text-3:#8C9A94;
  --ok:#1E9E6A; --warn:#E0A100; --danger:#D9483B;
  --r-sm:8px; --r-md:12px; --r-lg:18px; --r-xl:24px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,58,51,.06),0 8px 24px rgba(12,58,51,.06);
  --sh-2:0 12px 32px rgba(12,58,51,.12);
  --sec-y:clamp(56px,7vw,96px);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.8;color:var(--text);
  background:var(--bg);text-align:left;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--ink);text-decoration:none;transition:color .2s ease-out,background-color .2s ease-out,border-color .2s ease-out;}
a:hover{color:var(--accent);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:clamp(16px,4vw,32px);padding-right:clamp(16px,4vw,32px);}
.section{padding-top:var(--sec-y);padding-bottom:var(--sec-y);}
.section--tight{padding-top:clamp(40px,5vw,64px);padding-bottom:clamp(40px,5vw,64px);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,3.2vw,38px);font-weight:750;line-height:1.25;color:var(--ink);letter-spacing:-.3px;}
.section-head p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px;}
.text-link{font-size:14.5px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px;border-bottom:2px solid transparent;}
.text-link:hover{color:var(--accent);border-bottom-color:var(--accent);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--ink-100);color:var(--ink);font-size:12.5px;font-weight:600;letter-spacing:.02em;}
.eyebrow--ghost{background:rgba(255,255,255,.14);color:#EAF5F1;border:1px solid rgba(255,255,255,.2);}
.badge{display:inline-block;padding:4px 12px;border-radius:var(--r-pill);background:var(--ink-100);color:var(--ink);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;}
.badge--aqua{background:rgba(23,195,162,.12);color:#0F8F78;}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;
  border-radius:var(--r-md);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,background-color .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(255,106,43,.22);}
.btn--primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn--ghost:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px);}
.btn--ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn--ghost-light:hover{border-color:#fff;color:#fff;transform:translateY(-1px);}
.btn--sm{height:40px;padding:0 18px;font-size:14px;}
.btn--lg{height:48px;padding:0 26px;font-size:15.5px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out;}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.nav-inner{display:flex;align-items:center;gap:28px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{position:relative;width:26px;height:26px;border-radius:8px;background:var(--ink);display:inline-block;flex-shrink:0;}
.brand-mark::after{content:"";position:absolute;right:5px;bottom:6px;width:9px;height:3px;border-radius:2px;background:var(--accent);}
.brand-text{font-size:15.5px;font-weight:700;color:var(--ink);letter-spacing:-.2px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:6px;}
.main-nav a{font-size:14px;font-weight:500;color:var(--text-2);padding:6px 0;border-bottom:2px solid transparent;}
.main-nav a:hover{color:var(--ink);border-bottom-color:var(--accent);}
.main-nav a.is-active{color:var(--ink);background:var(--ink-100);border-radius:var(--r-pill);padding:6px 14px;border-bottom-color:transparent;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:16px;}
.command-search{position:relative;}
.command-search input{width:212px;height:38px;border-radius:var(--r-md);border:1px solid transparent;background:#EEF2EE;
  padding:0 42px 0 36px;font-size:14px;color:var(--text);transition:border-color .2s ease-out,background-color .2s ease-out;}
.command-search input::placeholder{color:var(--text-3);}
.command-search input:focus{outline:none;border-color:var(--ink);background:#fff;}
.command-search .search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;
  stroke:var(--text-3);stroke-width:2;fill:none;}
.command-search .kbd{position:absolute;right:10px;top:50%;transform:translateY(-50%);font-size:11px;font-weight:600;
  color:var(--text-2);background:#fff;border:1px solid var(--line);border-radius:6px;padding:1px 6px;line-height:1.4;}
.search-panel{position:absolute;top:calc(100% + 8px);left:0;width:300px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-2);padding:12px;opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;}
.command-search:focus-within .search-panel{opacity:1;visibility:visible;transform:translateY(0);}
.search-panel h4{font-size:12px;font-weight:600;color:var(--text-3);letter-spacing:.04em;margin-bottom:6px;}
.search-panel a{display:block;font-size:14px;color:var(--text-2);padding:7px 8px;border-radius:var(--r-sm);}
.search-panel a:hover{background:var(--ink-100);color:var(--ink);}
.nav-quick{font-size:14px;font-weight:500;color:var(--text-2);}
.nav-quick:hover{color:var(--accent);}
.nav-cta{height:40px;padding:0 20px;font-size:14.5px;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;}

/* 抽屉 */
.drawer{position:fixed;inset:0;z-index:80;background:rgba(7,39,34,.35);opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s;}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer-panel{position:absolute;top:0;left:0;right:0;background:#fff;border-radius:0 0 var(--r-lg) var(--r-lg);
  padding:18px 20px 96px;transform:translateY(-12px);transition:transform .2s ease-out;}
.drawer.is-open .drawer-panel{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;font-size:18px;
  color:var(--text-2);cursor:pointer;line-height:1;}
.drawer-search input{width:100%;height:42px;border-radius:var(--r-md);border:1px solid var(--line);background:#EEF2EE;
  padding:0 14px;font-size:14.5px;}
.drawer-nav{margin-top:14px;border-top:1px solid var(--line);}
.drawer-nav a{display:flex;align-items:center;height:48px;font-size:15px;font-weight:500;color:var(--text);
  border-bottom:1px solid var(--line);}
.drawer-cta{position:absolute;left:0;right:0;bottom:0;padding:14px 20px calc(14px + env(safe-area-inset-bottom));
  background:#fff;border-top:1px solid var(--line);}
.drawer-cta .btn{width:100%;}

/* Hero */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;
  border-radius:0 0 var(--r-xl) var(--r-xl);padding-top:clamp(48px,6vw,80px);padding-bottom:clamp(40px,5vw,64px);}
.hero::before{content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(255,255,255,.12);}
.hero::after{content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:22px 22px;pointer-events:none;}
.hero-grid{position:relative;z-index:2;}
.hero h1{font-size:clamp(30px,4.6vw,52px);font-weight:800;line-height:1.16;letter-spacing:-.5px;color:#fff;margin:18px 0 16px;}
.hero-sub{font-size:16.5px;line-height:1.8;color:#C9DED6;max-width:560px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px;}
.hero-trust{display:flex;gap:28px;flex-wrap:wrap;margin-top:32px;}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:#C9DED6;}
.hero-trust svg{width:20px;height:20px;stroke:var(--aqua);stroke-width:2;fill:none;flex-shrink:0;}
.hero-visual{position:relative;margin-top:8px;}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);}
.float-card{position:absolute;right:-8px;bottom:-16px;background:#fff;border-radius:var(--r-md);box-shadow:var(--sh-2);
  padding:12px 16px;min-width:150px;}
.float-card span{display:block;font-size:12px;font-weight:600;color:var(--text-3);letter-spacing:.04em;}
.float-card strong{display:block;font-size:17px;font-weight:750;color:var(--ink);margin-top:4px;}
.hero-tags{position:relative;z-index:2;display:flex;gap:10px;margin-top:clamp(32px,4vw,48px);overflow-x:auto;
  padding-bottom:6px;scrollbar-width:none;}
.hero-tags::-webkit-scrollbar{display:none;}
.hero-tags li{flex:0 0 auto;padding:7px 16px;border-radius:var(--r-pill);background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.16);font-size:12.5px;font-weight:600;color:#DCEBE5;letter-spacing:.02em;}

/* 三步 */
.steps{position:relative;}
.steps-track{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px;}
.steps-track::before{content:"";position:absolute;left:8%;right:8%;top:56px;border-top:2px dashed var(--line);z-index:0;}
.step-card{position:relative;z-index:1;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:28px 24px 24px;transition:transform .2s ease-out,box-shadow .2s ease-out;}
.step-card:nth-child(2){transform:translateY(-12px);}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.step-card:nth-child(2):hover{transform:translateY(-16px);}
.step-num{width:40px;height:40px;border-radius:50%;background:var(--aqua);color:#fff;font-size:16px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;transition:background-color .2s ease-out;}
.step-card:hover .step-num{background:var(--accent);}
.step-card h3{font-size:19px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.step-card p{font-size:14.5px;color:var(--text-2);line-height:1.75;}
.step-note{display:inline-block;margin-top:18px;font-size:13px;font-weight:600;color:var(--aqua);letter-spacing:.02em;}

/* 案例 */
.case-card{display:flex;gap:20px;align-items:stretch;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:20px;transition:transform .2s ease-out,box-shadow .2s ease-out;}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.case-card img{width:44%;min-width:150px;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);flex-shrink:0;}
.case-body{display:flex;flex-direction:column;gap:10px;}
.case-body h3{font-size:18px;font-weight:700;color:var(--ink);line-height:1.4;}
.case-body p{font-size:14.5px;color:var(--text-2);line-height:1.75;}
.case-body .text-link{margin-top:auto;}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px;}
.stat-item{border-bottom:1px solid var(--line);padding-bottom:16px;}
.stat-item strong{display:block;font-size:28px;font-weight:800;color:var(--ink);line-height:1.2;}
.stat-item span{display:block;margin-top:6px;font-size:14px;color:var(--text-2);}
.quote-card{margin-top:32px;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:var(--r-md);padding:20px 24px;font-size:14.5px;color:var(--text-2);line-height:1.8;}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .2s ease-out,box-shadow .2s ease-out;}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.news-media{position:relative;background:var(--ink-100);}
.news-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.news-media .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);}
.news-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:17px;font-weight:650;line-height:1.45;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card:hover .news-body h3{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}
.news-body p{font-size:14.5px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:12px;border-top:1px solid var(--line);font-size:13px;font-weight:500;color:var(--text-3);}
.news-meta svg{width:16px;height:16px;stroke:var(--text-3);stroke-width:1.8;fill:none;}
.empty-state{background:var(--ink-100);border:1px dashed #B9CFC7;border-radius:var(--r-lg);padding:48px 24px;text-align:center;}
.empty-state svg{width:32px;height:32px;stroke:var(--ink);stroke-width:1.5;fill:none;margin:0 auto 14px;}
.empty-state p{font-size:15px;color:var(--ink);margin-bottom:18px;}
.news-foot{display:flex;justify-content:center;margin-top:40px;}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-list .accordion-item{background:#fff;border:1px solid var(--line) !important;border-radius:var(--r-md);
  overflow:hidden;position:relative;transition:border-color .2s ease-out;}
.faq-list .accordion-item.is-active{border-color:#CBDCD5 !important;}
.faq-list .accordion-title{font-size:16px;font-weight:650;color:var(--text);padding:18px 52px 18px 20px;border:0;
  line-height:1.5;transition:color .18s ease-out;}
.faq-list .accordion-title::before{content:"";}
.faq-list .accordion-item.is-active .accordion-title{color:var(--ink);}
.faq-list .accordion-item.is-active::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:var(--accent);border-radius:0 3px 3px 0;}
.faq-list .accordion-title::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--text-3);line-height:1;}
.faq-list .accordion-item.is-active .accordion-title::after{content:"−";color:var(--accent);}
.faq-list .accordion-content{padding:0 20px 20px;font-size:14.5px;color:var(--text-2);line-height:1.8;border:0 !important;}
.faq-side p{font-size:14.5px;color:var(--text-2);margin:12px 0 22px;}

/* CTA */
.cta-band{background:var(--ink-900);padding:clamp(56px,7vw,96px) 0;}
.cta-card{background:#fff;border-radius:20px;box-shadow:var(--sh-2);padding:clamp(28px,4vw,48px);
  display:grid;grid-template-columns:1.05fr 1fr;gap:36px;align-items:center;
  transform:translateY(-24px);margin-bottom:-24px;}
.cta-card h2{font-size:clamp(24px,3.2vw,34px);font-weight:750;color:var(--ink);line-height:1.25;}
.cta-card > div > p{margin-top:12px;font-size:15px;color:var(--text-2);}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;}
.cta-form input{flex:1 1 180px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;
  padding:0 14px;font-size:14.5px;color:var(--text);transition:border-color .2s ease-out;}
.cta-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(255,106,43,.16);}
.form-hint{margin-top:12px;font-size:13px;color:var(--text-3);}
.form-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px;}
.cta-band .form-note{color:#9FC2B7;}

/* 页脚 */
.site-footer{background:var(--ink-900);color:#CFE3DC;padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{margin-top:16px;font-size:14px;color:#9FC2B7;line-height:1.8;max-width:280px;}
.footer-social{display:flex;gap:12px;margin-top:18px;}
.footer-social span{width:34px;height:34px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;}
.footer-social svg{width:17px;height:17px;stroke:#CFE3DC;stroke-width:1.6;fill:none;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col a{display:block;font-size:14px;color:#9FC2B7;padding:6px 0;}
.footer-col a:hover{color:#fff;}
.footer-qr{width:96px;height:96px;border-radius:var(--r-md);background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:#9FC2B7;line-height:1.5;padding:8px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);min-height:44px;display:flex;align-items:center;
  justify-content:space-between;gap:16px;flex-wrap:wrap;padding:12px 0;font-size:13px;color:#8FB3A8;}
.footer-bottom a{color:#8FB3A8;}
.footer-bottom a:hover{color:#fff;}
.to-top{background:transparent;border:1px solid rgba(255,255,255,.2);color:#CFE3DC;height:32px;padding:0 14px;
  border-radius:var(--r-pill);font-size:13px;cursor:pointer;transition:border-color .2s ease-out,color .2s ease-out;}
.to-top:hover{border-color:#fff;color:#fff;}

/* 响应式 */
@media (max-width:1023px){
  .main-nav,.command-search,.nav-quick{display:none;}
  .nav-toggle{display:flex;}
  .nav-inner{height:56px;}
  .hero-visual{margin-top:32px;}
  .float-card{right:12px;bottom:-14px;}
  .steps-track{grid-template-columns:1fr;gap:16px;}
  .steps-track::before{display:none;}
  .step-card:nth-child(2){transform:none;}
  .step-card{border-left:2px dashed var(--line);}
  .case-card{flex-direction:column;}
  .case-card img{width:100%;min-width:0;}
  .stat-row{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .cta-card{grid-template-columns:1fr;transform:translateY(-16px);margin-bottom:-16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:639px){
  .brand-text{font-size:14.5px;}
  .hero{border-radius:0 0 var(--r-lg) var(--r-lg);}
  .hero-trust{gap:14px;flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .cta-form input,.cta-form .btn,.form-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --ink:#0C3A33;
  --ink-900:#072722;
  --ink-100:#E7F0EC;
  --accent:#FF6A2B;
  --aqua:#17C3A2;
  --bg:#F6F8F5;
  --surface:#FFFFFF;
  --line:#E2E8E3;
  --text:#1A2321;
  --text-2:#5C6B66;
  --text-3:#8C9A94;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,58,51,.06),0 8px 24px rgba(12,58,51,.06);
  --sh-2:0 12px 32px rgba(12,58,51,.12);
  --section:clamp(56px,7vw,96px);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding-left:1.2em;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:clamp(16px,4vw,32px);
  padding-right:clamp(16px,4vw,32px);
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,248,245,.92);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:24px;height:24px;border-radius:8px;
  background:var(--ink);
  position:relative;
  display:inline-block;
}
.brand-mark::after{
  content:"";
  position:absolute;
  left:5px;right:5px;bottom:7px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
}
.brand-text{font-size:16px;font-weight:750;color:var(--ink);letter-spacing:-.2px;line-height:1.2;}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  font-size:14px;font-weight:500;color:var(--text-2);
  padding:6px 2px;
  position:relative;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.main-nav a:hover{color:var(--ink);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink);background:var(--ink-100);border-radius:var(--r-pill);padding:6px 14px;}
.main-nav a.is-active::after{display:none;}
.nav-right{display:flex;align-items:center;gap:14px;}
.command-search{
  position:relative;
  display:flex;align-items:center;gap:8px;
  height:38px;width:236px;
  background:#EEF2EE;
  border:1px solid transparent;
  border-radius:var(--r-md);
  padding:0 10px;
}
.command-search:focus-within{border-color:var(--ink);background:#fff;}
.search-icon{width:16px;height:16px;flex-shrink:0;fill:none;stroke:var(--text-3);stroke-width:1.8;stroke-linecap:round;}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:13.5px;color:var(--text);font-family:inherit;
}
.command-search input::placeholder{color:var(--text-3);}
.kbd{
  font-size:11px;font-weight:600;color:var(--text-3);
  border:1px solid var(--line);border-radius:6px;
  padding:1px 5px;background:#fff;
}
.search-panel{
  position:absolute;top:calc(100% + 8px);left:0;right:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-2);
  padding:10px;
  display:none;
}
.command-search:focus-within .search-panel{display:block;}
.search-panel h4{font-size:12px;color:var(--text-3);font-weight:600;margin-bottom:6px;letter-spacing:.04em;}
.search-panel a{
  display:block;font-size:13.5px;color:var(--text-2);
  padding:6px 8px;border-radius:var(--r-sm);
}
.search-panel a:hover{background:var(--ink-100);color:var(--ink);}
.nav-quick{font-size:14px;font-weight:500;color:var(--text-2);}
.nav-quick:hover{color:var(--accent);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-md);
  font-weight:600;
  border:1px solid transparent;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--accent);color:#fff;height:40px;padding:0 20px;font-size:14.5px;}
.btn--primary:hover{background:#ef5a18;transform:translateY(-1px);}
.btn--primary:active{transform:translateY(0);}
.btn--lg{height:48px;padding:0 26px;font-size:15.5px;}
.btn--ghost{border-color:var(--ink);color:var(--ink);background:transparent;height:40px;padding:0 20px;font-size:14.5px;}
.btn--ghost:hover{background:var(--ink-100);transform:translateY(-1px);}
.btn--outline-white{border-color:rgba(255,255,255,.6);color:#fff;background:transparent;height:48px;padding:0 24px;font-size:15.5px;}
.btn--outline-white:hover{background:rgba(255,255,255,.12);transform:translateY(-1px);}
.btn--text{color:var(--ink);font-weight:600;font-size:14px;}
.btn--text:hover{color:var(--accent);}
.btn[disabled]{opacity:.4;pointer-events:none;}

.nav-toggle{display:none;width:44px;height:44px;background:transparent;border:0;padding:0;flex-direction:column;justify-content:center;align-items:center;gap:5px;}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);}

/* ---------- Article ---------- */
.article-hero{
  padding:clamp(28px,4vw,48px) 0 clamp(20px,3vw,32px);
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:20px;}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--accent);}
.crumbs .sep{color:#C3CEC8;}
.crumbs .current{color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;max-width:60ch;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:var(--ink-100);color:var(--ink);
  border-radius:var(--r-pill);padding:5px 12px;
}
.badge--aqua{background:rgba(23,195,162,.12);color:#0E8C74;}
.article-title{
  font-size:clamp(26px,3.6vw,42px);
  font-weight:800;line-height:1.2;letter-spacing:-.5px;
  color:var(--ink);
  margin:14px 0 16px;
  max-width:24ch;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  font-size:13px;color:var(--text-3);font-weight:500;
}
.article-meta .dot{color:#C3CEC8;}
.share-group{margin-left:auto;display:flex;gap:8px;}
.share-btn{
  width:32px;height:32px;border-radius:50%;
  border:1px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);
}
.share-btn svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.share-btn:hover{border-color:var(--ink);color:var(--ink);}

.article-body{padding:clamp(36px,5vw,64px) 0 var(--section);}
.layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;align-items:start;}

.entry{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(22px,3.4vw,44px);box-shadow:var(--sh-1);}
.entry > *:first-child{margin-top:0;}
.entry p{font-size:16.5px;line-height:1.9;color:var(--text);margin:0 0 1em;}
.entry h2{
  font-size:22px;font-weight:750;line-height:1.4;color:var(--ink);
  margin:40px 0 14px;padding-left:12px;position:relative;
}
.entry h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--accent);}
.entry h3{font-size:18px;font-weight:700;color:var(--ink);margin:28px 0 10px;}
.entry ul,.entry ol{margin:0 0 1em;font-size:16.5px;line-height:1.8;color:var(--text);}
.entry li{margin-bottom:8px;}
.entry ul li::marker{color:var(--aqua);}
.entry ol li::marker{color:var(--ink);font-weight:700;}
.entry blockquote{
  margin:22px 0;padding:16px 20px;
  background:var(--ink-100);
  border-left:4px solid var(--ink);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-2);font-size:15.5px;line-height:1.85;
}
.entry img{border-radius:var(--r-lg);margin:22px 0 8px;width:100%;}
.entry figure{margin:24px 0;}
.entry figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px;}
.entry table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;display:block;overflow-x:auto;}
.entry th{background:var(--ink-100);color:var(--ink);font-weight:700;text-align:left;}
.entry th,.entry td{border:1px solid var(--line);padding:10px 14px;}
.entry a{color:var(--ink);font-weight:600;border-bottom:1px solid rgba(12,58,51,.35);}
.entry a:hover{color:var(--accent);border-color:var(--accent);}
.entry code{background:var(--ink-100);color:var(--ink);border-radius:6px;padding:2px 6px;font-size:14px;}

.empty-state{
  background:var(--ink-100);
  border:1px dashed rgba(12,58,51,.28);
  border-radius:var(--r-lg);
  padding:40px 24px;
  text-align:center;
}
.empty-state svg{width:32px;height:32px;fill:none;stroke:var(--ink);stroke-width:1.6;stroke-linecap:round;margin:0 auto 12px;}
.empty-state p{font-size:15.5px;color:var(--text-2);margin-bottom:16px;}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;}
.tag{
  font-size:12.5px;font-weight:600;color:var(--text-2);
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-pill);padding:5px 14px;
}
.tag:hover{border-color:var(--ink);color:var(--ink);}

.postnav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;}
.postnav-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 18px;display:block;
}
.postnav-card span{display:block;font-size:12.5px;color:var(--text-3);margin-bottom:6px;}
.postnav-card strong{display:block;font-size:15px;font-weight:650;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.postnav-card:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-1);}

.side{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;}
.side-card h4{font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.06em;margin-bottom:14px;}
.toc a{display:block;font-size:14px;color:var(--text-2);padding:7px 0 7px 12px;border-left:2px solid transparent;}
.toc a:hover{color:var(--ink);}
.toc a.is-current{color:var(--ink);font-weight:600;border-left-color:var(--accent);}
.rec-item{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);}
.rec-item:last-child{border-bottom:0;padding-bottom:0;}
.rec-item img{width:64px;height:48px;object-fit:cover;border-radius:var(--r-sm);flex-shrink:0;}
.rec-item strong{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:14px;font-weight:600;color:var(--ink);line-height:1.5;}
.rec-item span{display:block;font-size:12.5px;color:var(--text-3);margin-top:4px;}
.rec-item:hover strong{color:var(--accent);}

.related{padding:var(--section) 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:750;color:var(--ink);line-height:1.3;}
.section-head p{font-size:14.5px;color:var(--text-2);margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.info-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.info-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;}
.info-card .thumb img{width:100%;height:100%;object-fit:cover;}
.info-card .thumb .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);}
.info-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.info-card h3{font-size:17px;font-weight:650;line-height:1.45;color:var(--ink);}
.info-card p{font-size:14.5px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.info-card .meta{margin-top:auto;font-size:13px;color:var(--text-3);display:flex;align-items:center;justify-content:space-between;}
.info-card:hover h3{text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:4px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-900);color:#CFE3DC;padding:clamp(48px,6vw,72px) 0 0;margin-top:var(--section);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-mark{background:#fff;}
.footer-brand p{font-size:14px;color:#9FBDB3;line-height:1.8;margin:16px 0 18px;max-width:34ch;}
.footer-social{display:flex;gap:10px;}
.footer-social span{
  width:34px;height:34px;border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  display:inline-flex;align-items:center;justify-content:center;
}
.footer-social svg{width:16px;height:16px;fill:none;stroke:#CFE3DC;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.footer-social span:hover{border-color:var(--accent);background:rgba(255,106,43,.12);}
.footer-col h4{font-size:14px;color:#fff;font-weight:700;margin-bottom:16px;}
.footer-col a{display:block;font-size:14px;color:#9FBDB3;padding:6px 0;}
.footer-col a:hover{color:#fff;}
.footer-qr{
  width:96px;height:96px;border-radius:var(--r-md);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:#9FBDB3;line-height:1.5;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  min-height:44px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;
  font-size:13px;color:#88A79D;
}
.to-top{background:transparent;border:1px solid rgba(255,255,255,.2);color:#CFE3DC;border-radius:var(--r-pill);padding:6px 14px;font-size:13px;}
.to-top:hover{border-color:var(--accent);color:#fff;}

@media (max-width:1023px){
  .layout{grid-template-columns:1fr;gap:36px;}
  .side{position:static;order:2;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .command-search{width:180px;}
}
@media (max-width:767px){
  .article-hero{padding-top:24px;}
  .entry{border-radius:var(--r-md);padding:20px 16px;}
  .entry h2{font-size:20px;margin-top:32px;}
  .entry p,.entry ul,.entry ol{font-size:16px;}
  .postnav{grid-template-columns:1fr;}
}
@media (max-width:639px){
  .nav-inner{min-height:56px;gap:10px;}
  .brand-text{font-size:14px;max-width:9em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .command-search,.nav-quick{display:none;}
  .nav-cta{height:38px;padding:0 14px;font-size:14px;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .share-group{margin-left:0;}
  .nav-drawer{position:fixed;inset:56px 0 0 0;background:#fff;z-index:70;padding:20px;display:none;flex-direction:column;}
  .nav-drawer.is-open{display:flex;}
  .nav-drawer a{display:block;font-size:16px;color:var(--text);padding:14px 4px;border-bottom:1px solid var(--line);}
  .nav-drawer a.is-active{color:var(--accent);}
  .nav-drawer .btn{margin-top:auto;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category1 */
:root{
  --ink:#0C3A33;
  --ink-900:#072722;
  --ink-100:#E7F0EC;
  --accent:#FF6A2B;
  --accent-dark:#EE5A1B;
  --aqua:#17C3A2;
  --bg:#F6F8F5;
  --surface:#FFFFFF;
  --line:#E2E8E3;
  --text:#1A2321;
  --text-2:#5C6B66;
  --text-3:#8C9A94;
  --ok:#1E9E6A;
  --warn:#D9483B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,58,51,.06),0 8px 24px rgba(12,58,51,.06);
  --sh-2:0 12px 32px rgba(12,58,51,.12);
  --sec-y:clamp(56px,7vw,96px);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--ink);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
svg{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
::selection{background:var(--ink);color:#fff;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 clamp(16px,4vw,32px);
}
@media (min-width:1440px){.container{max-width:1240px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:all .2s ease-out;white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(255,106,43,.24);}
.btn--primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,106,43,.3);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--text);}
.btn--ghost:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px);}
.btn--outline-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn--outline-light:hover{border-color:#fff;background:rgba(255,255,255,.1);color:#fff;transform:translateY(-1px);}
.btn--lg{height:48px;padding:0 28px;font-size:16px;}
.btn--sm{height:40px;padding:0 18px;font-size:14px;}
.btn[disabled]{opacity:.4;pointer-events:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--ink);
  border-bottom:1px solid transparent;transition:all .2s ease-out;
}
.link-arrow:hover{color:var(--accent);border-bottom-color:var(--accent);}
.link-arrow svg{width:16px;height:16px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:var(--ink-100);color:var(--ink);
}
.badge--aqua{background:rgba(23,195,162,.12);color:#0E8C74;}
.badge--line{background:transparent;border:1px solid var(--line);color:var(--text-2);}

/* ---------- 头部 / 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:24px;height:24px;border-radius:7px;background:var(--ink);position:relative;flex-shrink:0;
}
.brand-mark::after{
  content:"";position:absolute;left:5px;bottom:6px;width:14px;height:2px;border-radius:2px;background:var(--accent);
}
.brand-text{font-size:16px;font-weight:800;letter-spacing:-.2px;color:var(--ink);}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;font-size:14px;font-weight:500;color:var(--text-2);
  padding:6px 2px;transition:color .2s ease-out;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
}
.main-nav a:hover{color:var(--ink);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink);font-weight:600;background:var(--ink-100);padding:6px 12px;border-radius:var(--r-pill);}
.main-nav a.is-active::after{display:none;}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-quick{font-size:14px;font-weight:500;color:var(--text-2);transition:color .2s ease-out;}
.nav-quick:hover{color:var(--accent);}
.nav-cta{height:40px;padding:0 20px;font-size:14.5px;}
.command-search{position:relative;display:flex;align-items:center;}
.command-search .search-icon{
  position:absolute;left:12px;width:16px;height:16px;color:var(--text-3);pointer-events:none;
}
.command-search input{
  width:236px;height:38px;border-radius:var(--r-md);border:1px solid transparent;
  background:#EEF2EE;padding:0 44px 0 34px;font-size:13.5px;color:var(--text);
  transition:all .2s ease-out;
}
.command-search input::placeholder{color:var(--text-3);}
.command-search input:focus{
  outline:none;border-color:var(--ink);background:#fff;box-shadow:0 0 0 2px rgba(12,58,51,.08);
}
.command-search .kbd{
  position:absolute;right:10px;font-size:11px;font-weight:600;color:var(--text-2);
  background:#fff;border:1px solid var(--line);border-radius:6px;padding:1px 6px;line-height:1.5;
}
.search-panel{
  position:absolute;top:calc(100% + 10px);right:0;width:300px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-2);padding:14px;display:none;
}
.command-search:focus-within .search-panel{display:block;}
.search-panel h4{
  font-size:12px;font-weight:600;color:var(--text-3);letter-spacing:.06em;margin-bottom:8px;
}
.search-panel a{
  display:block;font-size:14px;color:var(--text-2);padding:8px 10px;border-radius:var(--r-sm);
  transition:all .15s ease-out;
}
.search-panel a:hover{background:var(--ink-100);color:var(--ink);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-md);
  background:#fff;cursor:pointer;padding:12px;
}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;}
.nav-toggle span+span{margin-top:5px;}

/* ---------- 分类页首屏 ---------- */
.hero-guide{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--ink) 0%,#0A3129 100%);
  color:#fff;padding:clamp(48px,6vw,84px) 0 clamp(56px,7vw,92px);
}
.hero-guide::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.22;pointer-events:none;
}
.hero-guide::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;
  border:1px solid rgba(255,255,255,.16);border-radius:50%;pointer-events:none;
}
.hero-guide .container{position:relative;z-index:2;}
.hero-guide .badge{background:rgba(255,255,255,.14);color:#EAF6F1;}
.hero-guide h1{
  margin:18px 0 16px;
  font-size:clamp(30px,4.6vw,50px);font-weight:800;line-height:1.16;letter-spacing:-.5px;
  color:#fff;max-width:880px;
}
.hero-lead{font-size:17px;color:#CFE3DC;max-width:660px;line-height:1.85;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-badges span{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  font-size:13px;font-weight:600;color:#E7F4EF;
}
.hero-badges svg{width:15px;height:15px;color:var(--aqua);}

/* ---------- 主体布局 ---------- */
.section{padding:var(--sec-y) 0;}
.guide-layout{display:grid;grid-template-columns:3fr 9fr;gap:48px;align-items:start;}
@media (max-width:1023px){.guide-layout{grid-template-columns:1fr;gap:28px;}}

.guide-toc{
  position:sticky;top:96px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px 20px;box-shadow:var(--sh-1);
}
.guide-toc h2{font-size:14px;font-weight:700;color:var(--text-3);letter-spacing:.06em;margin-bottom:14px;}
.guide-toc a{
  display:block;position:relative;font-size:14px;color:var(--text-2);
  padding:9px 0 9px 12px;line-height:1.6;transition:color .18s ease-out;
}
.guide-toc a::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:2px;border-radius:2px;
  background:transparent;transition:background .18s ease-out;
}
.guide-toc a:hover{color:var(--ink);}
.guide-toc a.is-current{color:var(--ink);font-weight:600;}
.guide-toc a.is-current::before{background:var(--accent);}
.guide-toc .toc-foot{
  margin-top:18px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.75;
}
@media (max-width:1023px){
  .guide-toc{position:static;}
  .guide-toc a{display:inline-block;padding:7px 12px;border:1px solid var(--line);border-radius:var(--r-pill);margin:0 8px 8px 0;font-size:13px;}
  .guide-toc a::before{display:none;}
  .guide-toc a.is-current{background:var(--ink-100);border-color:transparent;}
}

.guide-body{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(24px,3.4vw,44px);box-shadow:var(--sh-1);}
.guide-section{padding-bottom:42px;margin-bottom:42px;border-bottom:1px solid var(--line);}
.guide-section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.guide-section h2{
  position:relative;font-size:clamp(21px,2.4vw,26px);font-weight:750;line-height:1.3;
  letter-spacing:-.3px;color:var(--ink);padding-left:16px;margin-bottom:20px;
}
.guide-section h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--accent);
}
.guide-section h3{font-size:17.5px;font-weight:700;color:var(--text);margin:26px 0 10px;}
.guide-section p{font-size:16px;color:var(--text-2);line-height:1.9;margin-bottom:14px;}
.guide-section p strong{color:var(--text);font-weight:650;}
.check-list{margin:18px 0 4px;display:grid;gap:10px;}
.check-list li{
  position:relative;padding-left:30px;font-size:15.5px;color:var(--text-2);line-height:1.8;
}
.check-list li::before{
  content:"";position:absolute;left:8px;top:11px;width:7px;height:7px;border-radius:50%;background:var(--aqua);
}
.check-list li::after{
  content:"";position:absolute;left:0;top:4px;width:22px;height:22px;border-radius:50%;
  background:rgba(23,195,162,.12);
}
.step-list{counter-reset:gstep;display:grid;gap:14px;margin-top:8px;}
.step-list li{
  counter-increment:gstep;position:relative;padding:16px 18px 16px 58px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-md);
  font-size:15.5px;color:var(--text-2);line-height:1.8;
}
.step-list li::before{
  content:counter(gstep);position:absolute;left:16px;top:16px;
  width:28px;height:28px;border-radius:50%;background:var(--aqua);color:#fff;
  font-size:13.5px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.step-list li strong{color:var(--ink);display:block;font-size:15.5px;margin-bottom:2px;}
.note-box{
  background:var(--ink-100);border-left:4px solid var(--ink);border-radius:0 var(--r-md) var(--r-md) 0;
  padding:16px 20px;margin:20px 0;font-size:15px;color:var(--text-2);line-height:1.85;
}
.note-box strong{color:var(--ink);}
.tip-table{width:100%;overflow-x:auto;margin-top:14px;}
.tip-table table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px;}
.tip-table th{
  background:var(--ink-100);color:var(--ink);font-weight:650;font-size:14.5px;
  text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);
}
.tip-table td{padding:13px 16px;border-bottom:1px solid var(--line);color:var(--text-2);line-height:1.75;vertical-align:top;}
.tip-table tr:last-child td{border-bottom:0;}
.feature-img{margin:34px 0;}
.feature-img img{
  width:100%;aspect-ratio:21/9;object-fit:cover;border-radius:var(--r-xl);border:1px solid var(--line);
}
.feature-img figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}

/* ---------- 页尾 FAQ ---------- */
.faq-wrap{margin-top:44px;}
.faq-title{font-size:clamp(21px,2.4vw,26px);font-weight:750;color:var(--ink);margin-bottom:18px;letter-spacing:-.3px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease-out;
}
.faq-item[open]{border-color:#CBDAD2;}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 54px 18px 20px;font-size:16px;font-weight:650;color:var(--text);
  transition:color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:26px;width:12px;height:2px;border-radius:2px;background:var(--text-2);
  transition:background .18s ease-out;
}
.faq-item summary::before{
  content:"";position:absolute;right:27px;top:21px;width:2px;height:12px;border-radius:2px;background:var(--text-2);
  transition:all .18s ease-out;
}
.faq-item[open] summary{color:var(--ink);}
.faq-item[open] summary::before{transform:rotate(90deg);opacity:0;}
.faq-item[open] summary::after{background:var(--accent);}
.faq-item .faq-answer{
  padding:0 20px 20px 20px;font-size:14.5px;color:var(--text-2);line-height:1.85;
  border-left:3px solid transparent;transition:border-color .18s ease-out;
}
.faq-item[open] .faq-answer{border-left-color:var(--accent);}

.guide-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink-900);padding:clamp(56px,7vw,92px) 0;position:relative;overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;left:-100px;bottom:-160px;width:360px;height:360px;
  border:1px solid rgba(255,255,255,.1);border-radius:50%;
}
.cta-card{
  position:relative;z-index:2;background:var(--surface);border-radius:20px;
  padding:clamp(26px,3.6vw,44px);display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center;
  box-shadow:var(--sh-2);
}
@media (max-width:860px){.cta-card{grid-template-columns:1fr;gap:24px;}}
.cta-card h2{font-size:clamp(22px,2.8vw,31px);font-weight:750;color:var(--ink);line-height:1.28;letter-spacing:-.4px;margin-bottom:12px;}
.cta-card p{font-size:15.5px;color:var(--text-2);line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
@media (max-width:520px){.cta-actions .btn{width:100%;}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#CFE3DC;padding:clamp(48px,6vw,72px) 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr .9fr;gap:34px;}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px;}}
@media (max-width:600px){.footer-grid{grid-template-columns:1fr;}}
.site-footer .brand-text{color:#fff;}
.site-footer .brand-mark{background:#0F4A41;}
.footer-brand p{font-size:14px;color:#9DBBB1;line-height:1.85;margin:16px 0 18px;max-width:280px;}
.footer-social{display:flex;gap:12px;}
.footer-social span{
  width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);color:#CFE3DC;
  transition:all .2s ease-out;cursor:pointer;
}
.footer-social span:hover{background:rgba(255,255,255,.14);color:#fff;}
.footer-social svg{width:17px;height:17px;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col a{display:block;font-size:14px;color:#9DBBB1;padding:6px 0;transition:color .18s ease-out;}
.footer-col a:hover{color:#fff;}
.footer-qr{
  width:96px;height:96px;border-radius:var(--r-md);background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.12);color:#8FB2A7;font-size:12px;line-height:1.5;
  display:flex;align-items:center;justify-content:center;text-align:center;padding:8px;
}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:14px 0;min-height:44px;font-size:13px;color:#8FB2A7;
}
.to-top{
  background:transparent;border:1px solid rgba(255,255,255,.18);color:#CFE3DC;
  border-radius:var(--r-pill);padding:7px 16px;font-size:13px;cursor:pointer;transition:all .2s ease-out;
}
.to-top:hover{background:rgba(255,255,255,.12);color:#fff;}

/* ---------- 移动端抽屉 ---------- */
@media (max-width:1023px){
  .main-nav{
    display:none;position:fixed;left:0;right:0;top:56px;bottom:0;z-index:70;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:16px clamp(16px,4vw,24px) 110px;overflow-y:auto;
  }
  .main-nav.is-open{display:flex;animation:drawerIn .2s ease-out;}
  @keyframes drawerIn{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:translateY(0);}}
  .main-nav a{
    font-size:15.5px;padding:14px 4px;border-bottom:1px solid var(--line);border-radius:0;
  }
  .main-nav a.is-active{background:transparent;padding:14px 4px;color:var(--ink);}
  .main-nav a.is-active::after{display:none;}
  .nav-toggle{display:block;}
  .command-search{display:none;}
}
@media (max-width:640px){
  .nav-inner{min-height:56px;gap:12px;}
  .brand-text{font-size:15px;}
  .nav-quick{display:none;}
  .nav-cta{height:38px;padding:0 16px;font-size:14px;}
  .hero-badges span{font-size:12.5px;}
  .guide-body{padding:22px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category2 */
:root{
  --ink:#0C3A33;
  --ink-900:#072722;
  --ink-100:#E7F0EC;
  --accent:#FF6A2B;
  --accent-dark:#E85A1D;
  --aqua:#17C3A2;
  --bg:#F6F8F5;
  --surface:#FFFFFF;
  --line:#E2E8E3;
  --text:#1A2321;
  --text-2:#5C6B66;
  --text-3:#8C9A94;
  --success:#1E9E6A;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,58,51,.06),0 8px 24px rgba(12,58,51,.06);
  --sh-2:0 12px 32px rgba(12,58,51,.12);
  --gap:clamp(16px,4vw,32px);
  --sec:clamp(56px,7vw,96px);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  text-align:left;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--accent)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;color:var(--ink);text-align:left}
button{font-family:inherit}
input,button,textarea{font-size:16px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.container{
  max-width:1200px;
  margin:0 auto;
  padding-left:var(--gap);
  padding-right:var(--gap);
  width:100%;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  position:relative;
  width:24px;height:24px;
  border-radius:8px;
  background:var(--ink);
  flex:0 0 24px;
}
.brand-mark::after{
  content:"";
  position:absolute;left:6px;right:6px;bottom:6px;height:3px;
  border-radius:2px;background:var(--accent);
}
.brand-text{
  font-size:16px;font-weight:800;letter-spacing:-.3px;color:var(--ink);
  white-space:nowrap;
}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px}
.main-nav a{
  position:relative;
  font-size:14px;font-weight:500;color:var(--text-2);
  padding:6px 2px;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{
  color:var(--ink);
  background:var(--ink-100);
  padding:6px 12px;border-radius:var(--r-pill);
}
.main-nav a.is-active::after{display:none}
.nav-right{display:flex;align-items:center;gap:16px;margin-left:auto}

.command-search{position:relative;width:248px}
.command-search input{
  width:100%;height:38px;
  border-radius:var(--r-md);
  border:1px solid transparent;
  background:#EEF2EE;
  padding:0 40px 0 36px;
  color:var(--text);font-size:14px;
  transition:border-color .2s ease-out,background .2s ease-out;
}
.command-search input::placeholder{color:var(--text-3)}
.command-search input:focus{
  outline:none;background:#fff;border-color:var(--ink);
  box-shadow:0 0 0 1px var(--ink);
}
.search-icon{
  position:absolute;left:11px;top:50%;transform:translateY(-50%);
  width:16px;height:16px;stroke:var(--text-3);stroke-width:2;fill:none;
  stroke-linecap:round;
}
.kbd{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:11px;font-weight:600;color:var(--text-3);
  background:#fff;border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;line-height:1.4;
}
.search-panel{
  position:absolute;top:calc(100% + 8px);left:0;right:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-2);padding:12px;
  display:none;
}
.command-search:focus-within .search-panel{display:block}
.search-panel h4{
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  color:var(--text-3);margin:0 0 6px;padding:0 6px;
}
.search-panel a{
  display:block;font-size:14px;color:var(--text-2);
  padding:7px 6px;border-radius:var(--r-sm);
}
.search-panel a:hover{background:var(--ink-100);color:var(--ink)}

.nav-quick{
  font-size:14px;font-weight:500;color:var(--text-2);white-space:nowrap;
}
.nav-quick:hover{color:var(--accent)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;
  border-radius:var(--r-md);
  font-weight:600;
  cursor:pointer;
  transition:transform .2s ease-out,background .2s ease-out,color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  text-align:center;
  white-space:nowrap;
}
.btn--primary{background:var(--accent);color:#fff}
.btn--primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink);background:#fff;color:var(--ink);transform:translateY(-1px)}
.btn--ghost-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn--ghost-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;transform:translateY(-1px)}
.btn--text{padding:0;background:none;color:var(--ink);font-weight:600;font-size:14.5px}
.btn--text:hover{color:var(--accent)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--md{height:44px;padding:0 22px;font-size:15px}
.btn--lg{height:48px;padding:0 28px;font-size:15.5px}
.btn[disabled]{opacity:.4;cursor:not-allowed}
.nav-cta{height:40px;padding:0 18px;font-size:14px}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);background:#fff;border-radius:var(--r-md);
  padding:0;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}

/* ============ Hero 顶图 ============ */
.cat-hero{
  position:relative;
  margin:24px auto 0;
  max-width:1240px;
  border-radius:var(--r-xl);
  overflow:hidden;
  background-color:var(--ink);
  background-image:linear-gradient(100deg,rgba(7,39,34,.82) 0%,rgba(7,39,34,.6) 55%,rgba(7,39,34,.42) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  min-height:clamp(340px,36vw,460px);
  display:flex;align-items:center;
}
.cat-hero::after{
  content:"";
  position:absolute;right:-60px;top:-40px;width:220px;height:220px;
  border:1px solid rgba(255,255,255,.16);border-radius:50%;
  pointer-events:none;
}
.cat-hero-inner{position:relative;z-index:2;max-width:720px;padding:clamp(40px,6vw,64px) 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  padding:6px 14px;border-radius:var(--r-pill);
  margin-bottom:18px;
}
.eyebrow--light{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);color:#EAF6F1}
.eyebrow--light .dot{width:6px;height:6px;border-radius:50%;background:var(--aqua);display:block}
.cat-hero h1{
  color:#fff;
  font-size:clamp(30px,4.6vw,52px);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.5px;
  margin-bottom:18px;
}
.cat-hero-sub{
  color:rgba(255,255,255,.86);
  font-size:clamp(15px,1.4vw,17px);
  line-height:1.7;
  max-width:520px;
  margin-bottom:28px;
}
.cat-hero-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 面包屑 ============ */
.crumb-bar{padding:18px 0 0}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3)}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{color:var(--text-3)}
.crumbs .current{color:var(--text-2);max-width:70%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 板块通用 ============ */
.section{padding:var(--sec) 0 0}
.section:last-of-type{padding-bottom:var(--sec)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{
  font-size:clamp(24px,3.2vw,38px);
  font-weight:750;line-height:1.25;letter-spacing:-.4px;
  margin-bottom:14px;
}
.section-head p{color:var(--text-2);font-size:16px;margin:0}
.section-head--row{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;max-width:none;
}

/* ============ 主题网格 ============ */
.topic-grid{display:flex;flex-wrap:wrap;margin:-12px}
.topic-col{width:100%;padding:12px}
.topic-card{
  display:flex;flex-direction:column;
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.topic-card:hover{transform:translateY(-4px);border-color:var(--ink);box-shadow:var(--sh-1)}
.topic-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--ink-100)}
.topic-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.topic-card:hover .topic-media img{transform:scale(1.03)}
.topic-tag{
  position:absolute;left:12px;top:12px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.92);color:var(--ink);
}
.topic-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.topic-body h3{
  font-size:19px;font-weight:700;line-height:1.45;margin-bottom:10px;
}
.topic-body p{color:var(--text-2);font-size:14.5px;line-height:1.8;margin-bottom:18px}
.topic-link{margin-top:auto;font-size:14.5px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.topic-card:hover .topic-link{color:var(--accent)}

/* ============ 要点带 ============ */
.keyband{
  background:var(--ink-100);
  border:1px solid #D8E6E0;
  border-radius:var(--r-xl);
  padding:26px clamp(18px,3vw,32px);
  display:flex;flex-wrap:wrap;gap:18px 32px;
  align-items:center;justify-content:space-between;
}
.keyband-item{display:flex;align-items:center;gap:10px;font-size:14.5px;font-weight:600;color:var(--ink)}
.keyband-item svg{width:20px;height:20px;stroke:var(--aqua);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.keyband-note{width:100%;font-size:14px;color:var(--text-2);font-weight:400;line-height:1.75}

/* ============ 说明双栏 ============ */
.split{display:flex;flex-wrap:wrap;gap:24px}
.split-main{width:100%}
.split-side{width:100%}
.panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px;
  box-shadow:var(--sh-1);
}
.panel h3{font-size:20px;font-weight:700;margin-bottom:14px}
.panel p{color:var(--text-2);font-size:15px}
.check-list li{
  position:relative;padding-left:26px;margin-bottom:12px;
  color:var(--text-2);font-size:15px;line-height:1.8;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:14px;height:8px;border-left:2px solid var(--aqua);border-bottom:2px solid var(--aqua);
  transform:rotate(-45deg);
}
.check-list li:last-child{margin-bottom:0}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color .2s ease-out;
}
.faq-item[open]{border-color:#CFDCD6}
.faq-item summary{
  position:relative;
  list-style:none;cursor:pointer;
  padding:18px 56px 18px 20px;
  font-size:16px;font-weight:650;color:var(--text);
  transition:color .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--accent);border-radius:0 3px 3px 0;
  transform:scaleY(0);transition:transform .18s ease-out;
}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:24px;
  width:12px;height:12px;
  border-right:2px solid var(--text-3);border-bottom:2px solid var(--text-3);
  transform:rotate(45deg);transition:transform .18s ease-out;
}
.faq-item[open] summary{color:var(--ink)}
.faq-item[open] summary::before{transform:scaleY(1)}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--ink)}
.faq-answer{padding:0 22px 20px 22px;color:var(--text-2);font-size:14.5px;line-height:1.8}
.faq-answer p{margin:0}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--ink-900);
  padding:clamp(56px,7vw,88px) 0;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;
  border:1px solid rgba(255,255,255,.08);border-radius:50%;
}
.cta-card{
  position:relative;z-index:2;
  background:#fff;
  border-radius:20px;
  padding:clamp(26px,4vw,44px);
  display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;
  box-shadow:var(--sh-2);
}
.cta-copy{flex:1 1 340px;max-width:520px}
.cta-copy h2{font-size:clamp(22px,2.6vw,30px);font-weight:750;line-height:1.3;margin-bottom:12px}
.cta-copy p{color:var(--text-2);font-size:15px;margin:0}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;flex:1 1 320px;max-width:480px}
.cta-form input{
  flex:1 1 200px;height:44px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  padding:0 16px;background:#fff;color:var(--text);
}
.cta-form input::placeholder{color:var(--text-3)}
.cta-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.cta-form .btn{flex:0 0 auto}
.form-hint{width:100%;font-size:13px;color:var(--text-3);margin:0}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#CFE3DC;padding:clamp(48px,6vw,72px) 0 0;margin-top:0}
.footer-grid{
  display:flex;flex-wrap:wrap;gap:32px 24px;padding-bottom:40px;
}
.footer-brand{flex:1 1 300px;max-width:380px}
.site-footer .brand-text{color:#fff}
.site-footer .brand-mark{background:#fff}
.site-footer .brand-mark::after{background:var(--accent)}
.footer-brand p{color:#9FBFB6;font-size:14.5px;line-height:1.8;margin:16px 0 20px}
.footer-social{display:flex;gap:12px}
.footer-social span{
  width:36px;height:36px;border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;
}
.footer-social svg{width:18px;height:18px;stroke:#CFE3DC;stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round}
.footer-col{flex:1 1 150px;display:flex;flex-direction:column;gap:10px}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;letter-spacing:.02em;margin-bottom:6px}
.footer-col a{color:#9FBFB6;font-size:14.5px}
.footer-col a:hover{color:var(--accent)}
.footer-qr{
  width:96px;height:96px;border-radius:var(--r-md);
  background:rgba(255,255,255,.06);
  border:1px dashed rgba(255,255,255,.24);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12.5px;line-height:1.6;color:#9FBFB6;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  min-height:44px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 0;
  font-size:13px;color:#8FB0A7;
}
.to-top{
  background:transparent;border:1px solid rgba(255,255,255,.2);
  color:#CFE3DC;border-radius:var(--r-pill);
  height:32px;padding:0 14px;font-size:13px;cursor:pointer;
  transition:border-color .2s ease-out,color .2s ease-out;
}
.to-top:hover{border-color:#fff;color:#fff}

/* ============ 响应式 ============ */
@media (min-width:640px){
  .topic-col{width:50%}
  .keyband-note{width:auto}
}
@media (min-width:1024px){
  .split-main{flex:1 1 62%;min-width:0}
  .split-side{flex:1 1 30%;min-width:280px}
}
@media (max-width:1023px){
  .nav-inner{height:56px;gap:14px}
  .brand-text{font-size:15px}
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;
    top:56px;left:0;right:0;bottom:0;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:16px var(--gap) 96px;
    margin:0;
    overflow-y:auto;
    display:none;
    z-index:59;
  }
  .main-nav.is-open{display:flex}
  .main-nav a{
    font-size:16px;color:var(--text);font-weight:500;
    padding:13px 0;border-bottom:1px solid var(--line);
    display:block;
  }
  .main-nav a::after{display:none}
  .main-nav a.is-active{background:transparent;padding:13px 0;border-radius:0;color:var(--ink)}
  .command-search{display:none}
  .nav-quick{display:none}
  .nav-cta{height:38px;padding:0 14px;font-size:13.5px}
  .cat-hero{margin:16px 12px 0;border-radius:var(--r-lg)}
  .cat-hero-inner{padding:36px 0}
}
@media (max-width:639px){
  .cat-hero-actions .btn{width:100%}
  .cta-form{flex-direction:column;align-items:stretch;max-width:none}
  .cta-form input,.cta-form .btn{width:100%}
  .footer-grid{gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start;padding:16px 0 20px}
}

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