/* roulang page: index */
:root{
  --brand-600:#24528C;
  --brand-700:#1B3F70;
  --brand-800:#14263D;
  --brand-100:#E8EFF8;
  --brand-050:#F2F6FC;
  --accent-500:#2FA79A;
  --accent-050:#E3F5F2;
  --page:#F7F9FC;
  --surface:#FFFFFF;
  --text:#12212F;
  --text-2:#4A5C6E;
  --text-3:#7B8B9A;
  --border:#E2E8F0;
  --line:#EDF1F6;
  --ok:#2E9E6B;
  --warn:#C9803A;
  --err:#C0492F;
  --radius-card:16px;
  --radius-lg:24px;
  --radius-sm:10px;
  --shadow-card:0 2px 4px rgba(18,33,47,.04), 0 14px 32px rgba(18,33,47,.07);
  --shadow-hover:0 6px 12px rgba(18,33,47,.06), 0 22px 44px rgba(18,33,47,.12);
  --shadow-nav:0 8px 28px rgba(18,33,47,.09);
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--page);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease)}
a:hover{color:var(--accent-500)}
button{font-family:inherit;cursor:pointer;border:0;background:none}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(47,167,154,.35);border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--alt{background:var(--brand-050)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:32px;line-height:1.3;font-weight:600;letter-spacing:-.2px}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--brand-600);background:var(--brand-100);padding:5px 14px;border-radius:999px;margin-bottom:18px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;line-height:1;transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);white-space:nowrap}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(36,82,140,.22)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(27,63,112,.28)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand-600);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-600);border-color:var(--brand-600);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600)}
.link-arrow span.arr{transition:transform var(--ease)}
.link-arrow:hover span.arr{transform:translateX(4px)}
.link-arrow:hover{color:var(--accent-500)}
.is-disabled{opacity:.45;cursor:not-allowed;pointer-events:none}

/* 头部导航 */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:60;padding:0 20px}
.nav-shell{position:relative;max-width:1120px;margin:0 auto;height:64px;display:flex;align-items:center;gap:18px;padding:0 12px 0 18px;background:rgba(255,255,255,.82);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border:1px solid var(--border);border-radius:999px;box-shadow:var(--shadow-nav);transition:background var(--ease),box-shadow var(--ease)}
.nav-shell.scrolled{background:rgba(255,255,255,.95);box-shadow:0 10px 32px rgba(18,33,47,.12)}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;line-height:1;color:var(--text)}
.logo:hover{color:var(--text)}
.logo-mark{width:34px;height:34px;border-radius:11px;background:linear-gradient(135deg,var(--brand-600),var(--brand-700));display:grid;place-items:center;color:#fff;font-size:16px;font-weight:700;flex-shrink:0}
.logo-text{display:flex;align-items:baseline;gap:2px;max-height:38px}
.logo-text b{font-size:15px;font-weight:700;letter-spacing:-.2px}
.logo-text em{font-size:11px;font-weight:500;font-style:normal;color:var(--text-3);letter-spacing:0}
.nav-menu{display:flex;align-items:center;gap:2px;margin:0 auto}
.nav-link{position:relative;display:inline-block;font-size:15px;font-weight:500;color:var(--text-2);padding:8px 14px;border-radius:999px;transition:background var(--ease),color var(--ease)}
.nav-link:hover{background:var(--brand-050);color:var(--brand-600)}
.nav-link.active{color:var(--brand-600)}
.nav-link.active::after{content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);width:16px;height:2px;border-radius:2px;background:var(--accent-500)}
.nav-cta{flex-shrink:0}
.nav-toggle{display:none;width:42px;height:42px;border-radius:999px;border:1px solid var(--border);background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.nav-toggle i{display:block;width:16px;height:2px;border-radius:2px;background:var(--brand-600);transition:transform var(--ease),opacity var(--ease)}
.nav-shell.open .nav-toggle i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-shell.open .nav-toggle i:nth-child(2){opacity:0}
.nav-shell.open .nav-toggle i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* Hero */
.hero{position:relative;padding:150px 0 96px;background:linear-gradient(180deg,var(--brand-050) 0%,#FFFFFF 100%)}
.hero-bg{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.hero-bg::before{content:"";position:absolute;right:-140px;top:-140px;width:480px;height:480px;border-radius:50%;background:var(--accent-500);opacity:.07}
.hero-bg::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(36,82,140,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(36,82,140,.05) 1px,transparent 1px);background-size:52px 52px;-webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.65),transparent 72%);mask-image:linear-gradient(180deg,rgba(0,0,0,.65),transparent 72%)}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:55fr 45fr;gap:48px;align-items:center}
.hero h1{font-size:44px;line-height:1.25;letter-spacing:-.5px;font-weight:700}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:30px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500);opacity:.8}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:4 / 3;object-fit:cover;border-radius:16px;box-shadow:var(--shadow-card);background:var(--brand-100)}
.float-card{position:absolute;left:-24px;bottom:-24px;display:flex;align-items:center;gap:14px;padding:16px 20px;background:#fff;border-radius:14px;box-shadow:var(--shadow-card);border:1px solid var(--line)}
.float-card .fc-num{font-size:24px;font-weight:700;color:var(--brand-600);line-height:1.1}
.float-card .fc-txt{font-size:12px;line-height:1.5;color:var(--text-3);max-width:130px}

/* 信任条 */
.trust{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-row{display:flex;flex-wrap:wrap}
.trust-item{flex:1 1 0;min-width:210px;padding:34px 26px;border-right:1px solid var(--line)}
.trust-item:last-child{border-right:0}
.trust-item .t-label{font-size:13px;color:var(--text-3)}
.trust-item .t-num{margin-top:6px;font-size:30px;font-weight:700;color:var(--brand-600);line-height:1.2;letter-spacing:-.5px}
.trust-item .t-num em{font-style:normal;font-size:15px;font-weight:600;color:var(--text-2);margin-left:4px}

/* 痛点 */
.pain-list{margin-top:8px}
.pain-item{display:grid;grid-template-columns:96px 1fr;gap:28px;padding:30px 0;border-bottom:1px solid var(--line);align-items:start}
.pain-item:first-child{border-top:1px solid var(--line)}
.pain-item .num{font-size:44px;font-weight:700;line-height:1;color:var(--brand-600);opacity:.18;letter-spacing:-2px}
.pain-item h3{font-size:19px;font-weight:600;line-height:1.5}
.pain-item p{margin-top:8px;color:var(--text-2);font-size:15.5px;max-width:780px}

/* 解决方案 */
.solution-item{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:80px}
.solution-item:last-child{margin-bottom:0}
.solution-item .sol-media{overflow:hidden;border-radius:16px;box-shadow:var(--shadow-card)}
.solution-item .sol-media img{width:100%;aspect-ratio:16 / 11;object-fit:cover;transition:transform var(--ease);background:var(--brand-100)}
.solution-item:hover .sol-media img{transform:scale(1.03)}
.solution-item.rev .sol-media{order:2}
.solution-item h3{font-size:22px;font-weight:600;line-height:1.45}
.solution-item p{margin-top:14px;color:var(--text-2);font-size:15.5px}
.solution-item .link-arrow{margin-top:20px}
.sol-index{display:inline-block;font-size:13px;font-weight:600;color:var(--accent-500);letter-spacing:.08em;margin-bottom:12px}

/* 成果深色带 */
.results{background:var(--brand-700);color:#fff;padding:80px 0}
.results .section-head h2{color:#fff}
.results .section-head p{color:rgba(255,255,255,.82)}
.results-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.result-item{padding:22px 22px 22px 0;border-right:1px solid rgba(255,255,255,.16)}
.result-item:last-child{border-right:0}
.result-item .r-num{font-size:40px;font-weight:700;color:var(--accent-500);line-height:1.15;letter-spacing:-1px}
.result-item .r-txt{margin-top:8px;font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.82)}
.case-list{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:48px}
.case-item{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:22px 24px}
.case-item h4{font-size:16px;font-weight:600;color:#fff}
.case-item p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.78)}

/* 证言 */
.voices-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.voice-col:last-child{padding-top:32px}
.voice-card{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-card);padding:28px 26px 24px;margin-bottom:28px;overflow:hidden}
.voice-card:last-child{margin-bottom:0}
.voice-card::before{content:"“";position:absolute;left:16px;top:2px;font-size:78px;line-height:1;color:var(--brand-600);opacity:.12;font-family:Georgia,serif}
.voice-card blockquote{margin:0;position:relative;font-size:15.5px;color:var(--text-2);line-height:1.85}
.voice-meta{display:flex;align-items:center;gap:12px;margin-top:20px}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--brand-100);color:var(--brand-600);display:grid;place-items:center;font-size:14px;font-weight:600;flex-shrink:0}
.voice-meta .vm-name{font-size:14px;font-weight:600;color:var(--text)}
.voice-meta .vm-role{font-size:12.5px;color:var(--text-3)}

/* 最新信息 */
.latest-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px;flex-wrap:wrap}
.latest-head h2{font-size:32px;font-weight:600;line-height:1.3;letter-spacing:-.2px}
.latest-head p{margin-top:12px;color:var(--text-2);font-size:15.5px;max-width:640px}
.latest-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:32px;align-items:start}
.post-lead{display:block;background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-card);overflow:hidden;transition:transform var(--ease),box-shadow var(--ease);color:inherit}
.post-lead:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);color:inherit}
.post-lead .media{overflow:hidden;background:var(--brand-100)}
.post-lead .media img{width:100%;aspect-ratio:16 / 10;object-fit:cover;transition:transform var(--ease)}
.post-lead:hover .media img{transform:scale(1.03)}
.post-lead .pl-body{padding:24px}
.post-lead h3{font-size:20px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-lead p{margin-top:10px;font-size:14.5px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;font-size:13px;color:var(--text-3)}
.badge-cat{display:inline-block;font-size:12px;font-weight:600;color:var(--accent-500);background:var(--accent-050);border-radius:6px;padding:3px 9px;line-height:1.5}
.post-mini-list{display:flex;flex-direction:column;gap:16px}
.post-mini{display:block;background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-card);padding:20px 22px;transition:transform var(--ease),box-shadow var(--ease);color:inherit}
.post-mini:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);color:inherit}
.post-mini h4{font-size:16.5px;font-weight:600;line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.post-mini p{margin-top:8px;font-size:13.5px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.post-mini .post-meta{margin-top:12px}
.latest-empty{grid-column:1 / -1;min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:var(--surface);border:1px dashed var(--border);border-radius:16px;text-align:center;padding:32px 24px}
.latest-empty svg{width:48px;height:48px;color:var(--brand-600);opacity:.3}
.latest-empty p{font-size:14px;color:var(--text-3)}

/* FAQ */
.faq-wrap{max-width:900px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease)}
.faq-item[open]{border-left:3px solid var(--accent-500);box-shadow:var(--shadow-card)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 24px;font-size:17px;font-weight:600;color:var(--text)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-600)}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0;transition:transform var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;transition:opacity var(--ease)}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* 底部 CTA */
.cta-band{padding:0 0 96px}
.cta-card{background:var(--brand-100);border-radius:var(--radius-lg);padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-card h2{font-size:28px;font-weight:600;line-height:1.35;color:var(--brand-800)}
.cta-card p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:620px}

/* 页脚 */
.site-footer{background:var(--brand-800);color:#fff;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo-text b{color:#fff}
.footer-brand .logo-text em{color:#8FA6BE}
.footer-brand p{font-size:14px;line-height:1.85;color:#B9C6D6;max-width:340px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:#B9C6D6}
.footer-col ul li a:hover{color:var(--accent-500)}
.footer-col p{font-size:14px;color:#B9C6D6;line-height:1.9}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:22px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom p{font-size:13px;color:#8FA6BE}

@media (max-width:1199px){
  .hero-grid{grid-template-columns:1fr 1fr;gap:36px}
  .hero h1{font-size:38px}
  .solution-item{gap:36px}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .hero{padding:132px 0 76px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero h1{font-size:34px}
  .hero-sub{max-width:100%}
  .float-card{left:16px;bottom:16px}
  .trust-item{flex:1 1 50%;min-width:0;border-bottom:1px solid var(--line)}
  .trust-item:nth-child(2n){border-right:0}
  .solution-item{grid-template-columns:1fr;gap:24px;margin-bottom:56px}
  .solution-item.rev .sol-media{order:0}
  .results-grid{grid-template-columns:1fr 1fr}
  .result-item:nth-child(2n){border-right:0}
  .latest-grid{grid-template-columns:1fr}
  .voices-grid{grid-template-columns:1fr}
  .voice-col:last-child{padding-top:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section-head h2,.latest-head h2{font-size:26px}
}
@media (max-width:767px){
  .site-header{padding:0 14px;top:12px}
  .nav-shell{height:58px;padding:0 10px 0 14px;gap:10px}
  .logo-mark{width:30px;height:30px;font-size:14px;border-radius:10px}
  .logo-text b{font-size:14px}
  .logo-text em{font-size:10px}
  .nav-toggle{display:flex;margin-left:auto}
  .nav-cta{display:none}
  .nav-menu{position:absolute;top:70px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:2px;margin:0;padding:10px;background:#fff;border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow-card)}
  .nav-shell.open .nav-menu{display:flex}
  .nav-link{padding:13px 16px;border-radius:12px;font-size:15px}
  .nav-link.active::after{display:none}
  .nav-link.active{background:var(--brand-050)}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .hero{padding:112px 0 56px}
  .hero h1{font-size:30px;letter-spacing:-.2px}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .section-head{margin-bottom:28px}
  .section-head h2,.latest-head h2{font-size:23px}
  .pain-item{grid-template-columns:56px 1fr;gap:14px;padding:24px 0}
  .pain-item .num{font-size:34px}
  .pain-item h3{font-size:17px}
  .results{padding:56px 0}
  .results-grid{grid-template-columns:1fr;gap:0}
  .result-item{border-right:0;border-bottom:1px solid rgba(255,255,255,.14);padding:18px 0}
  .result-item:last-child{border-bottom:0}
  .case-list{grid-template-columns:1fr;margin-top:32px}
  .voice-col:last-child{padding-top:0}
  .post-lead .pl-body,.post-mini{padding:18px}
  .cta-band{padding:0 0 56px}
  .cta-card{padding:28px 22px;border-radius:20px}
  .cta-card h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .site-footer{padding-top:52px}
  .faq-item summary{font-size:16px;padding:18px}
  .faq-item .faq-body{padding:0 18px 18px;font-size:14.5px}
}
@media (max-width:480px){
  .trust-item{flex:1 1 100%;border-right:0}
  .hero h1{font-size:26px}
  .btn{height:46px;padding:0 22px}
  .float-card{padding:12px 14px;gap:10px}
  .float-card .fc-num{font-size:20px}
  .hero-bg::after{display:none}
}

/* roulang page: article */
:root{
  --brand-600:#24528C;
  --brand-700:#1B3F70;
  --brand-800:#14263D;
  --brand-100:#E8EFF8;
  --brand-050:#F2F6FC;
  --accent-500:#2FA79A;
  --accent-600:#258A7F;
  --accent-050:#E3F5F2;
  --page:#F7F9FC;
  --surface:#FFFFFF;
  --text:#12212F;
  --text-2:#4A5C6E;
  --text-3:#7B8B9A;
  --border:#E2E8F0;
  --line:#EDF1F6;
  --success:#2E9E6B;
  --warn:#C9803A;
  --danger:#C0492F;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow-card:0 2px 4px rgba(18,33,47,.04),0 14px 32px rgba(18,33,47,.07);
  --shadow-hover:0 6px 12px rgba(18,33,47,.06),0 22px 44px rgba(18,33,47,.12);
  --shadow-nav:0 8px 28px rgba(18,33,47,.09);
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--page);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;border:0}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease)}
a:hover{color:var(--accent-500)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
:focus-visible{outline:3px solid rgba(47,167,154,.35);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 导航 ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:120;padding:16px 20px 0}
.nav-shell{
  position:relative;
  max-width:1120px;margin:0 auto;height:64px;
  display:flex;align-items:center;gap:14px;
  padding:0 12px 0 18px;
  border-radius:999px;
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--border);
  box-shadow:var(--shadow-nav);
  transition:background var(--ease),box-shadow var(--ease);
}
.nav-shell.is-solid{background:rgba(255,255,255,.95)}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto}
.logo:hover{color:var(--text)}
.logo-mark{
  width:32px;height:32px;border-radius:10px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-600),var(--accent-500));
  color:#fff;font-size:15px;font-weight:700;letter-spacing:0;
}
.logo-text{display:flex;align-items:baseline;gap:2px;line-height:1}
.logo-text b{font-size:16px;font-weight:700;letter-spacing:-.2px}
.logo-text em{font-size:12px;font-style:normal;font-weight:500;color:var(--text-2)}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-050)}
.nav-link.active{color:var(--brand-600);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--accent-500);
}
.nav-cta{flex:0 0 auto;margin-left:8px}
.nav-toggle{
  display:none;margin-left:auto;
  width:42px;height:42px;border-radius:12px;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--border);background:#fff;
}
.nav-toggle i{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-600);transition:transform var(--ease),opacity var(--ease)}
.nav-toggle[aria-expanded="true"] i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  border:1px solid transparent;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 18px rgba(36,82,140,.22)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(27,63,112,.28)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--border);color:var(--brand-600)}
.btn-ghost:hover{border-color:var(--brand-600);background:var(--brand-050);color:var(--brand-700)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600)}
.link-arrow span{transition:transform var(--ease)}
.link-arrow:hover{color:var(--accent-500)}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- 面包屑 ---------- */
main{padding-top:104px}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  padding:20px 0 0;font-size:13px;color:var(--text-3);
  white-space:nowrap;overflow:hidden;
}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:#C3CEDA}
.breadcrumb .current{color:var(--text);overflow:hidden;text-overflow:ellipsis}

/* ---------- 文章头部 ---------- */
.article-header{max-width:820px;padding:22px 0 26px;border-bottom:1px solid var(--line)}
.badge{
  display:inline-block;background:var(--accent-050);color:var(--accent-600);
  font-size:12px;font-weight:600;line-height:1.6;padding:4px 10px;border-radius:6px;
}
.article-title{
  font-size:clamp(28px,3.4vw,40px);
  line-height:1.3;font-weight:700;letter-spacing:-.5px;
  margin:16px 0 18px;color:var(--text);word-break:break-word;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 18px;font-size:13px;color:var(--text-3)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3CEDA}

/* ---------- 正文 ---------- */
.article-wrap{padding-bottom:8px}
.article-body{
  max-width:780px;margin:0 auto;padding:34px 0 8px;
  font-size:16px;line-height:1.9;color:var(--text-2);
}
.article-body > * + *{margin-top:1.2em}
.article-body p{margin:0 0 1.2em;line-height:1.9}
.article-body h2{
  position:relative;font-size:26px;line-height:1.4;font-weight:600;
  color:var(--text);margin:2em 0 .8em;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:9px;width:4px;height:20px;
  border-radius:2px;background:var(--accent-500);
}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--text);margin:1.8em 0 .6em}
.article-body h4{font-size:17px;line-height:1.5;font-weight:600;color:var(--text);margin:1.6em 0 .5em}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(36,82,140,.45);padding-bottom:1px}
.article-body a:hover{color:var(--accent-500);border-bottom-color:var(--accent-500)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px}
.article-body ul{list-style:none}
.article-body ul li{position:relative;padding-left:16px;margin-bottom:.5em}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:50%;
  background:var(--accent-500);
}
.article-body ol{list-style:decimal}
.article-body ol li{margin-bottom:.5em;padding-left:4px}
.article-body ol li::marker{color:var(--accent-600);font-weight:600}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;
  background:var(--brand-050);border-left:3px solid var(--accent-500);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  border-radius:12px;box-shadow:var(--shadow-card);margin:1.6em auto;
  width:100%;height:auto;
}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;
}
.article-body th{
  background:var(--brand-100);color:var(--text);font-weight:600;text-align:left;
  padding:12px 14px;border-bottom:1px solid var(--border);border-right:1px solid var(--border);
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);color:var(--text-2)}
.article-body tr:last-child td{border-bottom:0}
.article-body th:last-child,.article-body td:last-child{border-right:0}
.article-body tbody tr:hover{background:var(--brand-050)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}

/* ---------- 空态 ---------- */
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:40px 24px;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-card);
}
.empty-state .empty-icon{
  width:48px;height:48px;border-radius:50%;border:1.5px solid rgba(36,82,140,.3);
  display:flex;align-items:center;justify-content:center;color:rgba(36,82,140,.45);font-size:22px;font-weight:600;
}
.empty-state p{font-size:14px;color:var(--text-3);margin:0}

/* ---------- 文章尾部 ---------- */
.article-foot{max-width:780px;margin:0 auto;padding:8px 0 0}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:26px 0 0;border-top:1px solid var(--line)}
.tag-label{font-size:13px;color:var(--text-3);margin-right:2px}
.tag{
  display:inline-block;padding:5px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--border);
  font-size:13px;color:var(--text-2);
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.tag:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-050)}
.back-link{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:22px;font-size:14px;font-weight:600;color:var(--brand-600);
}
.back-link .arrow{transition:transform var(--ease)}
.back-link:hover{color:var(--accent-500)}
.back-link:hover .arrow{transform:translateX(-4px)}

/* ---------- 上下篇 ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:34px}
.post-nav a{
  display:block;padding:18px 20px;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--border);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-nav a:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(36,82,140,.28)}
.post-nav .pn-label{display:block;font-size:12px;color:var(--text-3);margin-bottom:6px}
.post-nav .pn-title{display:block;font-size:15px;font-weight:600;color:var(--text);line-height:1.6}
.post-nav a:hover .pn-title{color:var(--brand-600)}

/* ---------- 相关推荐 ---------- */
.section{padding:72px 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,2.4vw,30px);line-height:1.35;font-weight:600;color:var(--text);letter-spacing:-.3px}
.section-head p{font-size:14px;color:var(--text-3);margin-top:8px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.post-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--brand-050)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body .badge{align-self:flex-start}
.post-title{
  font-size:17px;line-height:1.55;font-weight:600;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card:hover .post-title{color:var(--brand-600)}
.post-desc{
  font-size:14px;line-height:1.75;color:var(--text-3);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{margin-top:auto;font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3CEDA}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:72px;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,var(--brand-050),var(--brand-100));
  border:1px solid rgba(36,82,140,.1);
  padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:clamp(22px,2.3vw,28px);line-height:1.4;font-weight:600;color:var(--text);letter-spacing:-.3px}
.cta-band p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:620px}
.cta-band .btn{flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-800);color:#B9C6D6;margin-top:80px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo-mark{background:linear-gradient(135deg,var(--accent-500),var(--brand-600))}
.footer-brand .logo-text b{color:#fff}
.footer-brand .logo-text em{color:#B9C6D6}
.footer-brand p{font-size:14px;line-height:1.9;color:#B9C6D6;margin:0}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin:0 0 16px;letter-spacing:.2px}
.footer-col li + li{margin-top:10px}
.footer-col a{font-size:14px;color:#B9C6D6}
.footer-col a:hover{color:var(--accent-500)}
.footer-col p{font-size:14px;line-height:1.9;color:#B9C6D6;margin:0}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  font-size:13px;color:#8FA0B4;
}
.footer-bottom p{margin:0}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 20px}
  .card-grid{gap:20px}
}
@media (max-width:991px){
  .nav-menu{gap:0}
  .cta-band{padding:36px;flex-direction:column;align-items:flex-start;gap:22px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:56px 0 0}
  main{padding-top:96px}
}
@media (max-width:900px){
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .nav-menu{
    display:none;
    position:absolute;top:calc(100% + 12px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    margin:0;padding:8px;
    background:#fff;border:1px solid var(--border);border-radius:20px;
    box-shadow:var(--shadow-card);
  }
  .nav-menu.is-open{display:flex}
  .nav-link{padding:13px 16px;border-radius:12px;font-size:15px}
  .nav-link + .nav-link{border-top:1px solid var(--line)}
  .nav-link.active::after{display:none}
  .nav-link.active{background:var(--brand-050)}
}
@media (max-width:767px){
  body{font-size:15px}
  .site-header{padding:12px 14px 0}
  .nav-shell{height:58px;padding:0 10px 0 14px;gap:10px}
  .logo-mark{width:28px;height:28px;font-size:13px;border-radius:9px}
  .logo-text b{font-size:15px}
  .logo-text em{font-size:11px}
  main{padding-top:88px}
  .breadcrumb{padding-top:14px;font-size:12px}
  .article-header{padding:16px 0 20px}
  .article-title{font-size:26px;margin:12px 0 14px}
  .article-body{padding-top:26px;font-size:15px}
  .article-body h2{font-size:21px;margin-top:1.7em;padding-left:12px}
  .article-body h2::before{top:6px;height:17px}
  .article-body h3{font-size:18px}
  .article-body img{border-radius:10px}
  .post-nav{grid-template-columns:1fr;gap:14px}
  .card-grid{grid-template-columns:1fr;gap:16px}
  .section{padding:44px 0 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:22px}
  .cta-band{padding:26px 22px;border-radius:20px;margin-top:48px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .site-footer{margin-top:56px;padding-top:44px}
  .footer-bottom{flex-direction:column}
  .btn{height:46px;padding:0 22px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .article-meta{font-size:12px;gap:6px 12px}
  .tag-row{gap:8px}
  .empty-state{min-height:220px}
}

/* roulang page: category1 */
:root{
  --brand-600:#24528C;
  --brand-700:#1B3F70;
  --brand-800:#14263D;
  --brand-100:#E8EFF8;
  --brand-050:#F2F6FC;
  --accent-500:#2FA79A;
  --accent-050:#E3F5F2;
  --page:#F7F9FC;
  --surface:#FFFFFF;
  --text:#12212F;
  --text-2:#4A5C6E;
  --text-3:#7B8B9A;
  --border:#E2E8F0;
  --line:#EDF1F6;
  --ok:#2E9E6B;
  --warn:#C9803A;
  --radius-card:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-card:0 2px 4px rgba(18,33,47,.04),0 14px 32px rgba(18,33,47,.07);
  --shadow-hover:0 6px 12px rgba(18,33,47,.06),0 22px 44px rgba(18,33,47,.12);
  --shadow-nav:0 8px 28px rgba(18,33,47,.09);
  --ease:200ms ease;
  --maxw:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:96px;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--accent-500);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.2px;}
p{margin:0;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(47,167,154,.35);border-radius:8px;}

.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  padding:16px 20px 0;
  pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  max-width:1120px;
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:14px;
  padding:0 12px 0 18px;
  border:1px solid var(--border);
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-nav);
  transition:background var(--ease),box-shadow var(--ease);
}
.nav-shell.is-scrolled{background:rgba(255,255,255,.95);}
.logo{
  display:inline-flex;
  align-items:center;
  gap:9px;
  flex-shrink:0;
  color:var(--brand-700);
}
.logo:hover{color:var(--brand-700);}
.logo-mark{
  width:32px;height:32px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(145deg,var(--brand-600),var(--accent-500));
  color:#fff;
  font-size:15px;
  font-weight:700;
  letter-spacing:0;
}
.logo-text{display:flex;align-items:baseline;gap:3px;line-height:1.1;}
.logo-text b{font-size:16px;font-weight:700;letter-spacing:-.3px;}
.logo-text em{font-style:normal;font-size:12.5px;font-weight:500;color:var(--text-2);letter-spacing:-.2px;}
.nav-menu{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  transition:background var(--ease),color var(--ease);
}
.nav-link:hover{background:var(--brand-050);color:var(--brand-700);}
.nav-link.active{color:var(--brand-600);font-weight:600;}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--accent-500);
}
.nav-cta{display:flex;align-items:center;margin-left:6px;}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  border:1px solid var(--border);
  border-radius:14px;
  background:var(--surface);
  padding:0;
  place-items:center;
}
.nav-toggle i{
  display:block;
  width:18px;height:2px;
  margin:2.5px auto;
  border-radius:2px;
  background:var(--brand-700);
  transition:transform var(--ease),opacity var(--ease);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 8px 20px rgba(36,82,140,.18);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:var(--surface);color:var(--brand-600);border-color:var(--border);}
.btn-ghost:hover{border-color:var(--brand-600);background:var(--brand-050);color:var(--brand-700);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-disabled{opacity:.45;cursor:not-allowed;transform:none !important;box-shadow:none;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand-600);
}
.link-arrow span{transition:transform var(--ease);display:inline-block;}
.link-arrow:hover span{transform:translateX(4px);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,var(--brand-050) 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(36,82,140,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(36,82,140,.045) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
}
.hero::after{
  content:"";
  position:absolute;
  top:-120px;right:-80px;
  width:380px;height:380px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(47,167,154,.16),rgba(47,167,154,0) 70%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:55fr 45fr;
  gap:56px;
  align-items:center;
  padding-top:64px;
  padding-bottom:72px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  margin-bottom:20px;
  border-radius:var(--radius-pill);
  background:var(--accent-050);
  color:#1F7F76;
  font-size:13px;
  font-weight:600;
  letter-spacing:.2px;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--accent-500);
}
.hero-title{
  font-size:44px;
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.5px;
  margin-bottom:18px;
  max-width:14em;
}
.hero-sub{
  font-size:17px;
  line-height:1.8;
  color:var(--text-2);
  max-width:36em;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.trust-badges{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.trust-badges li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  border:1px solid var(--border);
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.75);
  font-size:13px;
  color:var(--text-2);
}
.trust-badges li::before{
  content:"";
  width:5px;height:5px;
  border-radius:50%;
  background:var(--accent-500);
}
.hero-media{position:relative;}
.hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  background:var(--brand-100);
}
.float-card{
  position:absolute;
  left:-24px;
  bottom:24px;
  padding:14px 18px;
  border-radius:14px;
  background:rgba(255,255,255,.96);
  border:1px solid var(--border);
  box-shadow:var(--shadow-card);
  display:flex;
  flex-direction:column;
  gap:2px;
}
.float-card strong{font-size:16px;color:var(--brand-700);font-weight:700;}
.float-card span{font-size:12.5px;color:var(--text-3);}

/* ---------- 统计条 ---------- */
.stats-band{background:var(--surface);border-bottom:1px solid var(--line);}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  padding:34px 0;
}
.stat-item{
  padding:0 24px;
  border-left:1px solid var(--line);
}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{
  display:block;
  font-size:30px;
  font-weight:700;
  line-height:1.2;
  color:var(--brand-600);
  font-variant-numeric:tabular-nums;
}
.stat-num em{font-style:normal;font-size:15px;font-weight:600;color:var(--accent-500);margin-left:3px;}
.stat-label{
  display:block;
  margin-top:6px;
  font-size:13px;
  color:var(--text-3);
  line-height:1.6;
}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-title{
  font-size:32px;
  line-height:1.3;
  font-weight:600;
}
.section-desc{
  margin-top:12px;
  font-size:15.5px;
  color:var(--text-2);
  max-width:44em;
}

/* ---------- 筛选胶囊 ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:34px;
}
.chip{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 18px;
  border-radius:var(--radius-pill);
  border:1px solid var(--border);
  background:var(--surface);
  font-size:14px;
  font-weight:500;
  color:var(--text-2);
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.chip:hover{border-color:var(--brand-600);color:var(--brand-700);}
.chip.is-active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;font-weight:600;}

/* ---------- 资讯卡片网格 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:28px;
}
.news-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.card-media{overflow:hidden;background:var(--brand-100);}
.card-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform var(--ease);
}
.news-card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:11px;flex:1;}
.badge{
  align-self:flex-start;
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:6px;
  background:var(--accent-050);
  color:#1F7F76;
  font-size:12px;
  font-weight:600;
  letter-spacing:.2px;
}
.card-title{
  font-size:19px;
  line-height:1.5;
  font-weight:600;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-title a{color:var(--text);}
.card-title a:hover{color:var(--brand-600);}
.card-text{
  font-size:14.5px;
  line-height:1.75;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-meta{
  margin-top:auto;
  padding-top:12px;
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
}
.card-meta i{font-style:normal;color:var(--border);}

/* ---------- 交错图文 ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.split + .split{margin-top:72px;}
.split.reverse .split-media{order:2;}
.split-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  background:var(--brand-100);
}
.split h3{font-size:24px;line-height:1.45;font-weight:600;margin-bottom:14px;}
.split p{font-size:15.5px;line-height:1.85;color:var(--text-2);margin-bottom:14px;max-width:38em;}
.spec-list{display:grid;gap:12px;margin:18px 0 22px;}
.spec-list li{
  display:flex;
  gap:10px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.7;
}
.spec-list li::before{
  content:"";
  flex:0 0 auto;
  width:7px;height:7px;
  margin-top:9px;
  border-radius:2px;
  background:var(--accent-500);
}

/* ---------- 场景编号列表 ---------- */
.numbered{display:grid;gap:2px;max-width:920px;}
.numbered li{
  display:grid;
  grid-template-columns:96px 1fr;
  gap:24px;
  align-items:start;
  padding:26px 0;
  border-top:1px solid var(--line);
}
.numbered li:last-child{border-bottom:1px solid var(--line);}
.num{
  font-size:40px;
  font-weight:700;
  line-height:1;
  color:rgba(36,82,140,.18);
  font-variant-numeric:tabular-nums;
}
.numbered h4{font-size:17px;font-weight:600;margin-bottom:6px;}
.numbered p{font-size:15px;color:var(--text-2);line-height:1.8;max-width:44em;}

/* ---------- 流程 ---------- */
.process{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:26px 22px 24px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-100);}
.step-num{
  display:inline-grid;
  place-items:center;
  width:34px;height:34px;
  margin-bottom:14px;
  border-radius:11px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:14px;
  font-weight:700;
}
.step h4{font-size:16.5px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;color:var(--text-2);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq{max-width:900px;display:grid;gap:12px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--border);
  border-left:3px solid var(--border);
  border-radius:14px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item.open{border-left-color:var(--accent-500);box-shadow:var(--shadow-card);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  border:0;
  background:transparent;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  line-height:1.5;
}
.faq-q:hover{color:var(--brand-600);}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:18px;height:18px;
  transition:transform var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand-600);
  border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:1.5px;}
.faq-icon::after{left:8px;top:0;width:1.5px;height:18px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  display:none;
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}
.faq-item.open .faq-a{display:block;}

/* ---------- 底部 CTA ---------- */
.cta-card{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  padding:44px 48px;
  border-radius:var(--radius-lg);
  background:var(--brand-100);
  border:1px solid #D8E5F5;
}
.cta-card h2{font-size:28px;line-height:1.35;font-weight:600;margin-bottom:10px;}
.cta-card p{font-size:15.5px;color:var(--text-2);max-width:34em;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-800);
  color:#B9C6D6;
  padding:72px 0 0;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.4fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo-text em{color:#B9C6D6;}
.footer-brand p{font-size:14px;line-height:1.8;color:#B9C6D6;max-width:32em;}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.2px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:#B9C6D6;}
.footer-col a:hover{color:var(--accent-500);text-decoration:none;}
.footer-col p{font-size:14px;line-height:1.9;color:#B9C6D6;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
}
.footer-bottom p{font-size:13px;color:#8EA0B6;line-height:1.7;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 20px;}
  .hero-grid{gap:40px;}
  .split{gap:40px;}
  .cta-card{padding:38px 34px;}
}

@media (max-width:991px){
  body{padding-top:88px;}
  .nav-toggle{display:grid;}
  .nav-menu{
    position:absolute;
    top:74px;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:8px;
    background:rgba(255,255,255,.98);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border:1px solid var(--border);
    border-radius:20px;
    box-shadow:var(--shadow-nav);
    display:none;
  }
  .nav-shell.nav-open .nav-menu{display:flex;}
  .nav-link{padding:14px 16px;border-radius:12px;font-size:15px;}
  .nav-link + .nav-link{border-top:1px solid var(--line);}
  .nav-link.active::after{display:none;}
  .nav-link.active{background:var(--brand-050);}
  .nav-cta{display:none;}
  .hero-grid{grid-template-columns:1fr;padding-top:48px;padding-bottom:56px;}
  .hero-title{font-size:36px;max-width:none;}
  .hero-media{max-width:560px;}
  .float-card{left:0;bottom:16px;}
  .section{padding:72px 0;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:0;}
  .stat-item{padding:18px 20px;}
  .stat-item:nth-child(odd){border-left:0;padding-left:0;}
  .stat-item:nth-child(n+3){border-top:1px solid var(--line);}
  .split{grid-template-columns:1fr;gap:28px;}
  .split.reverse .split-media{order:0;}
  .split + .split{margin-top:56px;}
  .process{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-card{flex-direction:column;align-items:flex-start;gap:22px;}
  .section-title{font-size:26px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
}

@media (max-width:767px){
  .site-header{padding:12px 14px 0;}
  body{padding-top:82px;}
  .nav-shell{height:58px;padding:0 10px 0 14px;}
  .logo-mark{width:28px;height:28px;font-size:13px;border-radius:9px;}
  .logo-text b{font-size:15px;}
  .logo-text em{font-size:11.5px;}
  .nav-menu{top:68px;}
  .hero-title{font-size:30px;line-height:1.3;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .section{padding:56px 0;}
  .section-title{font-size:24px;}
  .card-grid{grid-template-columns:1fr;gap:18px;}
  .card-body{padding:18px 18px 20px;}
  .numbered li{grid-template-columns:60px 1fr;gap:16px;padding:22px 0;}
  .num{font-size:30px;}
  .process{grid-template-columns:1fr;gap:14px;}
  .cta-card{padding:28px 22px;border-radius:20px;}
  .cta-card h2{font-size:22px;}
  .faq-q{padding:18px 18px;font-size:15.5px;}
  .faq-a{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .site-footer{margin-top:56px;padding-top:52px;}
  .hero-grid{padding-top:36px;padding-bottom:44px;}
  .stats-grid{padding:22px 0;}
  .stat-num{font-size:26px;}
}

@media (max-width:479px){
  .hero::after{display:none;}
  .float-card{position:static;margin-top:14px;left:auto;bottom:auto;}
  .trust-badges li{font-size:12.5px;}
  .chip{height:34px;padding:0 14px;font-size:13px;}
}

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

/* roulang page: category2 */
:root{
  --brand-600:#24528C;
  --brand-700:#1B3F70;
  --brand-800:#14263D;
  --brand-100:#E8EFF8;
  --brand-050:#F2F6FC;
  --accent-500:#2FA79A;
  --accent-050:#E3F5F2;
  --page:#F7F9FC;
  --surface:#FFFFFF;
  --alt:#F2F6FC;
  --text:#12212F;
  --text-2:#4A5C6E;
  --text-3:#7B8B9A;
  --border:#E2E8F0;
  --line:#EDF1F6;
  --radius-card:16px;
  --radius-lg:24px;
  --radius-sm:10px;
  --shadow-card:0 2px 4px rgba(18,33,47,.04),0 14px 32px rgba(18,33,47,.07);
  --shadow-hover:0 6px 12px rgba(18,33,47,.06),0 22px 44px rgba(18,33,47,.12);
  --shadow-nav:0 8px 28px rgba(18,33,47,.09);
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding-top:104px;
  background:var(--page);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:hover{color:var(--accent-500);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);}
h1{font-size:44px;line-height:1.25;font-weight:700;letter-spacing:-.5px;}
h2{font-size:32px;line-height:1.3;font-weight:600;}
h3{font-size:22px;line-height:1.45;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--accent-050);color:var(--brand-700);}
:focus-visible{outline:3px solid rgba(47,167,154,.35);outline-offset:2px;border-radius:6px;}

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

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:120;padding:0 20px;}
.nav-shell{
  max-width:1120px;margin:0 auto;height:64px;
  display:flex;align-items:center;gap:16px;
  padding:0 12px 0 20px;
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--border);
  border-radius:999px;
  box-shadow:var(--shadow-nav);
  transition:background-color var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled .nav-shell{background:rgba(255,255,255,.95);box-shadow:0 10px 34px rgba(18,33,47,.13);}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);}
.logo:hover{color:var(--text);}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;display:grid;place-items:center;
  border-radius:11px;background:linear-gradient(150deg,var(--brand-600),var(--brand-700));
  color:#fff;font-size:16px;font-weight:700;letter-spacing:0;
}
.logo-text{display:inline-flex;align-items:baseline;gap:2px;line-height:1;}
.logo-text b{font-size:17px;font-weight:700;letter-spacing:.4px;color:var(--brand-800);}
.logo-text em{font-style:normal;font-size:13px;font-weight:500;color:var(--text-2);}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--text-2);
}
.nav-link:hover{background:var(--brand-050);color:var(--brand-700);}
.nav-link.active{color:var(--brand-600);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;
  border-radius:2px;background:var(--accent-500);
}
.nav-cta{flex:0 0 auto;margin-left:6px;}
.nav-toggle{
  display:none;width:42px;height:42px;margin-left:auto;
  border:1px solid var(--border);background:#fff;border-radius:999px;
  cursor:pointer;padding:0;position:relative;
}
.nav-toggle i{
  position:absolute;left:50%;width:17px;height:1.6px;background:var(--brand-700);
  border-radius:2px;transform:translateX(-50%);transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle i:nth-child(1){top:15px;}
.nav-toggle i:nth-child(2){top:20px;}
.nav-toggle i:nth-child(3){top:25px;}
.nav-toggle[aria-expanded="true"] i:nth-child(1){transform:translateX(-50%) translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] i:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] i:nth-child(3){transform:translateX(-50%) translateY(-5px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 18px rgba(36,82,140,.22);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(36,82,140,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:var(--border);color:var(--brand-600);}
.btn-ghost:hover{border-color:var(--brand-600);background:var(--brand-050);color:var(--brand-700);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand-600);}
.link-arrow span.ar{transition:transform var(--ease);}
.link-arrow:hover span.ar{transform:translateX(4px);}

/* ---------- 通用标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  background:var(--accent-050);color:#1F7F75;font-size:12px;font-weight:600;letter-spacing:.2px;
}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  background:#fff;border:1px solid var(--border);color:var(--text-2);
  font-size:14px;font-weight:500;cursor:pointer;transition:all var(--ease);
}
.chip:hover{border-color:var(--brand-600);color:var(--brand-700);}
.chip.is-active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(36,82,140,.2);}

/* ---------- 分类首屏 ---------- */
.cat-hero-wrap{padding:8px 0 0;}
.cat-hero{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  min-height:300px;display:flex;align-items:center;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  box-shadow:var(--shadow-card);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(242,246,252,.98) 0%,rgba(242,246,252,.94) 42%,rgba(242,246,252,.6) 72%,rgba(242,246,252,.32) 100%);
}
.cat-hero-inner{position:relative;z-index:1;padding:52px 52px 56px;max-width:720px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{color:#B6C2CE;}
.crumb .cur{color:var(--text-2);}
.cat-hero h1{font-size:40px;margin-bottom:16px;}
.cat-hero .hero-sub{font-size:16px;line-height:1.85;color:var(--text-2);max-width:620px;margin-bottom:24px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;}
.hero-meta span{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.86);border:1px solid var(--border);
  font-size:13px;color:var(--text-2);
}
.hero-meta span i{width:6px;height:6px;border-radius:50%;background:var(--accent-500);display:inline-block;font-style:normal;}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}

/* ---------- 主体两栏 ---------- */
.cat-body{padding:56px 0 0;}
.layout-2col{display:grid;grid-template-columns:320px minmax(0,1fr);gap:32px;align-items:start;}
.side{position:sticky;top:104px;display:grid;gap:20px;}
.side-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
}
.side-card h3{font-size:17px;margin-bottom:12px;}
.side-card p{font-size:14px;line-height:1.8;color:var(--text-2);}
.side-stats{display:grid;gap:12px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line);}
.side-stats div{display:flex;align-items:baseline;justify-content:space-between;gap:12px;}
.side-stats b{font-size:22px;font-weight:700;color:var(--brand-600);font-variant-numeric:tabular-nums;}
.side-stats span{font-size:13px;color:var(--text-3);}
.quick-list{display:grid;gap:2px;margin-top:10px;}
.quick-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:10px;font-size:14px;font-weight:500;color:var(--text-2);
}
.quick-list a:hover{background:var(--brand-050);color:var(--brand-700);}
.quick-list a .ar{color:var(--accent-500);font-size:13px;transition:transform var(--ease);}
.quick-list a:hover .ar{transform:translateX(4px);}
.side-note{
  background:linear-gradient(160deg,var(--brand-700),var(--brand-600));
  border-radius:var(--radius-card);padding:24px;color:rgba(255,255,255,.85);
}
.side-note h4{color:#fff;margin-bottom:8px;font-size:16px;}
.side-note p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.82);}
.side-note .btn{margin-top:16px;background:#fff;color:var(--brand-700);height:42px;font-size:14px;}
.side-note .btn:hover{background:var(--accent-050);color:var(--brand-800);}

/* ---------- 列表流 ---------- */
.stream-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px;flex-wrap:wrap;}
.stream-head h2{font-size:24px;}
.stream-head p{font-size:14px;color:var(--text-3);margin-top:6px;}
.stream{display:grid;gap:16px;}
.stream-item{
  display:grid;grid-template-columns:200px minmax(0,1fr);gap:20px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:18px;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.stream-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D5DFEC;}
.stream-thumb{
  width:200px;height:130px;border-radius:10px;overflow:hidden;background:#E9EEF5;flex:0 0 auto;
}
.stream-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.stream-item:hover .stream-thumb img{transform:scale(1.03);}
.stream-content{display:flex;flex-direction:column;gap:8px;min-width:0;}
.stream-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.stream-content h3{font-size:18px;line-height:1.5;}
.stream-content h3 a{color:var(--text);}
.stream-content h3 a:hover{color:var(--brand-600);}
.stream-content .desc{
  font-size:14px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.stream-foot{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--text-3);}
.stream-foot .dot{width:3px;height:3px;border-radius:50%;background:#C3CEDB;}
.load-more{margin-top:24px;display:flex;flex-direction:column;align-items:center;gap:10px;}
.load-more .hint{font-size:13px;color:var(--text-3);}

/* ---------- 步骤 ---------- */
.section{padding:96px 0 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{margin-bottom:12px;}
.section-head p{font-size:15px;color:var(--text-2);}
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.step{
  position:relative;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);padding:28px 24px 26px;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.step .num{
  font-size:34px;font-weight:700;line-height:1;color:rgba(36,82,140,.18);
  font-variant-numeric:tabular-nums;letter-spacing:-1px;
}
.step h3{font-size:18px;margin:14px 0 10px;}
.step p{font-size:14px;line-height:1.8;color:var(--text-2);}
.step .tagline{margin-top:14px;font-size:13px;color:var(--accent-500);font-weight:600;}

/* ---------- 深色数据带 ---------- */
.stats-band{
  margin-top:96px;background:linear-gradient(120deg,var(--brand-800),var(--brand-700) 65%,#1F4E86);
  border-radius:var(--radius-lg);padding:44px 40px;
  box-shadow:0 18px 44px rgba(20,38,61,.22);
}
.stats-band .band-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px;}
.stats-band h2{color:#fff;font-size:24px;}
.stats-band .band-head p{color:rgba(255,255,255,.72);font-size:14px;margin-top:6px;}
.stats-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;}
.stat-item{padding:0 24px;border-left:1px solid rgba(255,255,255,.16);}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-item b{
  display:block;font-size:40px;line-height:1.1;font-weight:700;color:#63D6C8;
  font-variant-numeric:tabular-nums;letter-spacing:-1px;
}
.stat-item span{display:block;margin-top:8px;font-size:13px;color:rgba(255,255,255,.9);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-left:1px solid var(--border);
  border-radius:14px;padding:20px 24px;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-left:3px solid var(--accent-500);box-shadow:var(--shadow-card);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .ico{
  position:relative;flex:0 0 20px;width:20px;height:20px;margin-top:4px;
  transition:transform var(--ease);color:var(--brand-600);
}
.faq-item summary .ico::before,
.faq-item summary .ico::after{
  content:"";position:absolute;background:currentColor;border-radius:1.5px;
}
.faq-item summary .ico::before{left:0;top:9px;width:20px;height:1.6px;}
.faq-item summary .ico::after{left:9px;top:0;width:1.6px;height:20px;}
.faq-item[open] summary .ico{transform:rotate(45deg);}
.faq-answer{padding-top:12px;font-size:15px;line-height:1.85;color:var(--text-2);}
.faq-answer p+p{margin-top:10px;}

/* ---------- CTA ---------- */
.cta-band{margin:96px 0 0;}
.cta-card{
  background:linear-gradient(120deg,var(--brand-050),var(--brand-100));
  border:1px solid #DCE6F3;border-radius:var(--radius-lg);
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-card h2{font-size:28px;margin-bottom:10px;}
.cta-card p{font-size:15px;color:var(--text-2);max-width:620px;}
.cta-card .btn{flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;background:var(--brand-800);color:#B9C6D6;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-text b{color:#fff;}
.footer-brand .logo-text em{color:#B9C6D6;}
.footer-brand p{font-size:14px;line-height:1.85;color:#93A4B7;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.4px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:#B9C6D6;}
.footer-col ul a:hover{color:var(--accent-500);}
.footer-col p{font-size:14px;line-height:1.9;color:#93A4B7;}
.footer-bottom{
  margin-top:48px;padding:22px 0 28px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:#8395A9;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 20px;}
  .layout-2col{grid-template-columns:280px minmax(0,1fr);gap:24px;}
  .cat-hero h1{font-size:34px;}
}
@media (max-width:991px){
  body{padding-top:96px;}
  .nav-menu{
    position:absolute;top:76px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border:1px solid var(--border);border-radius:20px;
    box-shadow:var(--shadow-hover);padding:8px;margin:0;
    display:none;
  }
  .nav-menu.is-open{display:flex;}
  .nav-link{padding:14px 16px;border-radius:14px;font-size:15px;}
  .nav-link+.nav-link{border-top:1px solid var(--line);}
  .nav-link.active::after{display:none;}
  .nav-link.active{background:var(--brand-050);}
  .nav-toggle{display:block;}
  .nav-cta{display:none;}
  .nav-shell{padding:0 12px 0 16px;}
  .cat-hero-inner{padding:40px 32px 44px;max-width:100%;}
  .cat-hero h1{font-size:30px;}
  .layout-2col{grid-template-columns:1fr;gap:24px;}
  .side{position:static;}
  .steps{grid-template-columns:1fr;}
  .stats-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 0;}
  .stat-item:nth-child(3){border-left:0;padding-left:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-card{flex-direction:column;align-items:flex-start;padding:36px;}
  .section{padding:72px 0 0;}
  .stats-band{margin-top:72px;padding:36px 28px;}
  .cta-band{margin-top:72px;}
  .site-footer{margin-top:72px;}
}
@media (max-width:767px){
  body{padding-top:88px;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .cat-hero{min-height:0;border-radius:20px;}
  .cat-hero-inner{padding:32px 24px 36px;}
  .cat-hero h1{font-size:26px;}
  .cat-hero .hero-sub{font-size:15px;}
  .filter-bar{gap:8px;margin-top:20px;}
  .chip{height:33px;padding:0 13px;font-size:13px;}
  .cat-body{padding-top:36px;}
  .stream-item{grid-template-columns:1fr;gap:14px;padding:16px;}
  .stream-thumb{width:100%;height:180px;}
  .stats-band{margin-top:56px;padding:30px 22px;border-radius:20px;}
  .stats-band h2{font-size:20px;}
  .stat-item{padding:0 16px;}
  .stat-item b{font-size:30px;}
  .cta-card{padding:28px;border-radius:20px;}
  .cta-card h2{font-size:22px;}
  .cta-card .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .section{padding:56px 0 0;}
  .cta-band{margin-top:56px;}
  .site-footer{margin-top:56px;padding-top:48px;}
  .btn{height:46px;padding:0 22px;}
  .side-card{padding:20px;}
}
@media (max-width:479px){
  .container{padding:0 16px;}
  .logo-text b{font-size:16px;}
  .logo-text em{font-size:12px;}
  .stream-thumb{height:150px;}
  .hero-meta span{font-size:12px;padding:0 11px;}
  .stats-row{grid-template-columns:1fr;}
  .stat-item{border-left:0;padding-left:0;}
}