/* roulang page: index */
/* ============ tokens ============ */
:root{
  --c-primary:#0E5A73;
  --c-primary-dark:#0B4D63;
  --c-primary-2:#14839F;
  --c-primary-light:#EAF4F7;
  --c-muted:#6B8A99;
  --c-accent:#E08A2E;
  --c-bg:#F7F9FA;
  --c-card:#FFFFFF;
  --c-inset:#F1F5F7;
  --c-ink:#1F2A30;
  --c-ink-2:#5C6B73;
  --c-ink-3:#8A979E;
  --c-line:#E3EAEE;
  --c-deep:#0E3A48;
  --ring:0 0 0 3px rgba(20,131,159,.28);
  --sh-1:0 1px 2px rgba(16,58,73,.05),0 10px 28px -14px rgba(16,58,73,.18);
  --sh-2:0 2px 6px rgba(16,58,73,.07),0 18px 40px -18px rgba(16,58,73,.26);
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sec-pad:88px;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
}
/* ============ base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);font-size:17px;line-height:1.85;
  color:var(--c-ink);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-primary-dark)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:none;box-shadow:var(--ring);border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec-pad) 0;position:relative}
.section--inset{background:var(--c-inset)}
.section--deep{background:var(--c-deep);color:rgba(255,255,255,.86)}
/* ============ section head ============ */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:32px;flex-wrap:wrap}
.sec-title-wrap{display:flex;align-items:baseline;gap:14px}
.sec-index{font-weight:700;font-size:15px;letter-spacing:.08em;color:rgba(14,90,115,.45)}
.sec-title{position:relative;font-size:32px;line-height:1.35;font-weight:700;letter-spacing:-.01em;padding-left:16px}
.sec-title::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--c-primary)}
.sec-desc{color:var(--c-ink-2);font-size:15px;max-width:560px;line-height:1.8}
.section--deep .sec-title{color:#fff}
.section--deep .sec-title::before{background:var(--c-primary-2)}
.section--deep .sec-index{color:rgba(255,255,255,.45)}
.section--deep .sec-desc{color:rgba(255,255,255,.7)}
/* ============ buttons ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-weight:500;font-size:16px;transition:transform .16s ease,background .18s ease,box-shadow .18s ease,color .18s ease;white-space:nowrap}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border:1px solid var(--c-primary);color:var(--c-primary);background:transparent}
.btn-ghost:hover{background:var(--c-primary-light);color:var(--c-primary-dark)}
.btn-light{background:#fff;color:var(--c-primary)}
.btn-light:hover{background:#EAF4F7;color:var(--c-primary-dark)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:500;color:var(--c-primary)}
.link-more:hover{text-decoration:underline;text-underline-offset:3px}
/* ============ header / nav ============ */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 6px 20px -14px rgba(16,58,73,.35)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:74px}
.brand{display:flex;align-items:center;gap:11px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{width:38px;height:38px;border-radius:11px;background:var(--c-primary);display:flex;align-items:center;justify-content:center;flex:0 0 auto;box-shadow:0 8px 18px -10px rgba(14,90,115,.7)}
.brand-mark svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.6}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em}
.brand-sub{font-size:11px;letter-spacing:.14em;color:var(--c-ink-3);text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:30px}
.nav-link{position:relative;font-size:15.5px;font-weight:500;color:var(--c-ink-2);padding:6px 0}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--c-primary);border-radius:2px;transform:scaleX(0);transition:transform .2s ease}
.nav-link:hover{color:var(--c-primary)}
.nav-link.active{color:var(--c-primary)}
.nav-link.active::after{transform:scaleX(1)}
.nav-cta{margin-left:6px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;align-items:center;justify-content:center;color:var(--c-primary);border:1px solid var(--c-line)}
.nav-toggle svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8}
/* ============ hero ============ */
.hero{position:relative;overflow:hidden;padding:78px 0 80px}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:.07}
.hero-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.55) 0%,rgba(247,249,250,.94) 62%,var(--c-bg) 100%)}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;font-weight:500;color:var(--c-primary);background:var(--c-primary-light);border-radius:var(--r-pill);padding:7px 15px}
.hero-eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 4px rgba(224,138,46,.18)}
.hero h1{font-size:44px;line-height:1.3;font-weight:700;letter-spacing:-.02em;margin:22px 0 18px}
.hero-sub{font-size:18px;color:var(--c-ink-2);max-width:560px;line-height:1.8}
.hero-actions{display:flex;gap:14px;margin:30px 0 26px;flex-wrap:wrap}
.trust-badges{display:flex;gap:10px;flex-wrap:wrap}
.trust-badges li{font-size:13.5px;color:var(--c-ink-2);border:1px solid var(--c-line);background:#fff;border-radius:var(--r-pill);padding:7px 14px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1)}
.hero-flag{position:absolute;left:-18px;bottom:26px;background:#fff;border-radius:12px;box-shadow:var(--sh-2);padding:14px 18px;border-left:4px solid var(--c-accent);min-width:200px}
.hero-flag strong{display:block;font-size:15px;font-weight:700;color:var(--c-ink);line-height:1.4}
.hero-flag span{font-size:13px;color:var(--c-ink-3)}
/* ============ status strip ============ */
.status-strip{background:var(--c-deep);color:rgba(255,255,255,.82)}
.status-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.12)}
.status-item{background:var(--c-deep);padding:26px 24px}
.status-item .k{display:flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.6)}
.status-item .k i{width:7px;height:7px;border-radius:50%;background:var(--c-accent);display:inline-block}
.status-item .v{font-size:19px;font-weight:600;color:#fff;margin-top:8px;letter-spacing:-.01em}
.status-item .d{font-size:13.5px;color:rgba(255,255,255,.62);line-height:1.7;margin-top:4px}
/* ============ toc ============ */
.toc{border-top:1px solid var(--c-line);background:#fff;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1)}
.toc-row{display:grid;grid-template-columns:58px minmax(0,1.2fr) minmax(0,1.6fr) auto 22px;align-items:center;gap:22px;min-height:76px;padding:14px 24px;border-bottom:1px solid var(--c-line);transition:background .18s ease}
.toc-row:last-child{border-bottom:0}
.toc-row:hover{background:var(--c-primary-light)}
.toc-num{font-weight:700;font-size:15px;color:rgba(14,90,115,.42);letter-spacing:.06em}
.toc-name{font-size:17px;font-weight:600;color:var(--c-ink)}
.toc-info{font-size:14.5px;color:var(--c-ink-2);line-height:1.7}
.toc-count{font-size:13px;color:var(--c-muted);border:1px solid var(--c-line);border-radius:var(--r-pill);padding:5px 12px;white-space:nowrap}
.toc-arrow{color:var(--c-primary);display:flex}
.toc-arrow svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.6}
/* ============ cards ============ */
.stagger{display:grid;grid-template-columns:repeat(12,1fr);gap:28px;padding-bottom:26px}
.s-item{position:relative;background:var(--c-card);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease}
.s-item::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-primary);z-index:2}
.s-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.s-item:nth-child(1){grid-column:span 5}
.s-item:nth-child(2){grid-column:span 7}
.s-item:nth-child(3){grid-column:span 7}
.s-item:nth-child(4){grid-column:span 5}
.s-item:nth-child(even){margin-top:34px}
.s-item img{width:100%;aspect-ratio:16/10;object-fit:cover}
.s-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.s-item:nth-child(4) .s-body,.s-item:nth-child(1) .s-body{padding:20px 22px 22px}
.s-tag{align-self:flex-start;font-size:13px;color:var(--c-primary);background:var(--c-primary-light);border-radius:var(--r-pill);padding:4px 12px}
.s-title{font-size:20px;font-weight:600;line-height:1.45;color:var(--c-ink)}
.s-text{font-size:14.5px;color:var(--c-ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.s-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-ink-3);border-top:1px solid var(--c-line);padding-top:12px}
.s-meta .go{color:var(--c-primary);font-weight:500}
/* ============ rail ============ */
.rail{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 18px;scrollbar-width:thin}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:#D6E1E6;border-radius:6px}
.rail-card{flex:0 0 calc((100% - 72px)/3.5);scroll-snap-align:start;position:relative;background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease}
.rail-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-primary-2);z-index:2}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.rail-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.rail-body{padding:18px 20px 20px}
.rail-body h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:8px}
.rail-body p{font-size:14px;color:var(--c-ink-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rail-meta{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:13px;color:var(--c-ink-3)}
/* ============ action bar ============ */
.action-bar{display:flex;align-items:center;justify-content:space-between;gap:28px;background:var(--c-primary-light);border-left:4px solid var(--c-primary);border-radius:0 var(--r-card) var(--r-card) 0;padding:26px 30px;flex-wrap:wrap}
.action-bar h3{font-size:20px;font-weight:600;line-height:1.5}
.action-bar p{font-size:14.5px;color:var(--c-ink-2);margin-top:6px}
.action-btns{display:flex;gap:12px;flex-wrap:wrap}
.chip-btn{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px;border-radius:var(--r-btn);background:#fff;border:1px solid var(--c-line);color:var(--c-primary);font-size:15px;font-weight:500;transition:border-color .18s ease,box-shadow .18s ease,transform .16s ease,color .18s ease}
.chip-btn:hover{border-color:var(--c-primary-2);box-shadow:var(--sh-1);transform:translateY(-1px)}
.chip-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.6}
.chip-btn.is-on{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
/* ============ info grid (latest) ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{position:relative;background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-1);padding:26px 24px 22px;display:flex;flex-direction:column;gap:12px;transition:transform .2s ease,box-shadow .2s ease}
.news-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-primary);border-radius:var(--r-card) var(--r-card) 0 0}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.news-cat{font-size:13px;color:var(--c-muted);border:1px solid var(--c-line);border-radius:var(--r-pill);padding:4px 11px}
.news-date{font-size:13px;color:var(--c-ink-3)}
.news-title{font-size:18px;font-weight:600;line-height:1.5}
.news-card a.news-link{color:var(--c-ink)}
.news-card a.news-link:hover{color:var(--c-primary)}
.news-summary{font-size:14.5px;color:var(--c-ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;border-top:1px solid var(--c-line);padding-top:12px;display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--c-primary);font-weight:500}
.empty-state{grid-column:1/-1;background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-card);padding:56px 24px;text-align:center;color:var(--c-ink-2)}
.empty-state svg{width:40px;height:40px;stroke:var(--c-muted);fill:none;stroke-width:1.5;margin:0 auto 14px}
.empty-state p{font-size:15px}
.empty-state a{display:inline-block;margin-top:10px;font-size:14.5px}
/* ============ faq ============ */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;transition:box-shadow .2s ease}
.faq-item[open]{box-shadow:var(--sh-1)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 24px;font-size:18px;font-weight:600;color:var(--c-ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-plus{flex:0 0 auto;width:26px;height:26px;position:relative;border-radius:50%;background:var(--c-primary-light);transition:transform .18s ease,background .18s ease}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;transform:translate(-50%,-50%)}
.faq-plus::before{width:12px;height:1.8px}
.faq-plus::after{width:1.8px;height:12px;transition:opacity .18s ease}
.faq-item[open] .faq-plus{transform:rotate(180deg)}
.faq-item[open] .faq-plus::after{opacity:0}
.faq-body{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}
/* ============ contact ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:start}
.contact-points{display:grid;gap:18px;margin-top:26px}
.contact-points li{display:flex;gap:14px;align-items:flex-start}
.cp-idx{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:rgba(255,255,255,.14);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center}
.contact-points strong{display:block;color:#fff;font-size:16px;font-weight:600;line-height:1.6}
.contact-points span{font-size:14.5px;color:rgba(255,255,255,.72);line-height:1.75}
.form-card{background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-2);padding:30px}
.form-row{display:grid;gap:8px;margin-bottom:18px}
.form-row label{font-size:14px;font-weight:500;color:var(--c-ink-2)}
.form-row input,.form-row select,.form-row textarea{width:100%;height:46px;border:1px solid var(--c-line);border-radius:var(--r-btn);padding:0 14px;font-size:15px;background:#fff;transition:border-color .18s ease,box-shadow .18s ease}
.form-row textarea{height:112px;padding:12px 14px;resize:vertical;line-height:1.7}
.form-row input::placeholder,.form-row textarea::placeholder{color:var(--c-ink-3)}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:none;border-color:var(--c-primary-2);box-shadow:var(--ring)}
.form-hint{font-size:13px;color:var(--c-accent)}
.form-note{font-size:13px;color:var(--c-ink-3);margin-top:12px;line-height:1.7}
.form-success{display:none;background:var(--c-primary-light);color:var(--c-primary);border-radius:var(--r-btn);padding:12px 14px;font-size:14px;margin-bottom:18px}
.form-success.is-show{display:block}
/* ============ footer ============ */
.site-footer{background:var(--c-deep);color:rgba(255,255,255,.8);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none}
.footer-brand .brand-name{color:#fff;font-size:17px;font-weight:700}
.footer-desc{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.68);max-width:300px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-list{display:grid;gap:11px}
.footer-list a,.footer-list span{font-size:14.5px;color:rgba(255,255,255,.72)}
.footer-list a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{margin-top:52px;border-top:1px solid rgba(255,255,255,.14);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.6)}
/* ============ responsive ============ */
@media (max-width:1279px){
  .hero h1{font-size:38px}
  .rail-card{flex:0 0 calc((100% - 48px)/2.5)}
}
@media (max-width:1023px){
  :root{--sec-pad:64px}
  .main-nav{gap:20px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:-1}
  .hero h1{font-size:34px}
  .status-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .s-item:nth-child(1),.s-item:nth-child(4){grid-column:span 6}
  .s-item:nth-child(2),.s-item:nth-child(3){grid-column:span 6}
  .s-item:nth-child(even){margin-top:0}
  .contact-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .sec-title{font-size:25px}
}
@media (max-width:767px){
  body{font-size:16px}
  :root{--sec-pad:48px}
  .container{padding:0 18px}
  .header-inner{height:66px}
  .brand-sub{display:none}
  .nav-toggle{display:flex}
  .main-nav{position:fixed;inset:66px 0 0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:22px 18px 30px;transform:translateY(-10px);opacity:0;visibility:hidden;transition:opacity .2s ease,transform .2s ease,visibility .2s;overflow-y:auto;box-shadow:0 24px 40px -24px rgba(16,58,73,.4)}
  .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-link{padding:16px 4px;border-bottom:1px solid var(--c-line);font-size:16.5px}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--c-primary)}
  .nav-cta{margin:22px 0 0;width:100%}
  .hero{padding:44px 0 54px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{flex:1 1 auto}
  .hero-flag{left:12px;bottom:12px}
  .status-grid{grid-template-columns:1fr}
  .toc-row{grid-template-columns:44px 1fr 20px;grid-template-areas:"n t a" "i i i" "c c c";gap:8px 14px;padding:16px 18px}
  .toc-num{grid-area:n}
  .toc-name{grid-area:t}
  .toc-arrow{grid-area:a}
  .toc-info{grid-area:i}
  .toc-count{grid-area:c;justify-self:start}
  .stagger{grid-template-columns:1fr;gap:20px}
  .s-item:nth-child(n){grid-column:span 12}
  .s-item:nth-child(even){margin-top:0}
  .news-grid{grid-template-columns:1fr}
  .rail-card{flex:0 0 86%}
  .s-item,.rail-card,.news-card{border-radius:12px}
  .action-bar{padding:22px}
  .action-btns .chip-btn{flex:1 1 auto;justify-content:center}
  .faq-item summary{font-size:16.5px;padding:17px 18px}
  .faq-body{padding:0 18px 18px}
  .form-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:479px){
  .hero h1{font-size:26px}
  .sec-title{font-size:22px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .faq-item summary{font-size:15.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .s-title{font-size:18px}
}

/* roulang page: article */
/* ============ 01 tokens ============ */
:root{
  --c-primary:#0E5A73;
  --c-primary-light:#14839F;
  --c-primary-dark:#0B4D63;
  --c-primary-soft:#EAF4F7;
  --c-accent:#E08A2E;
  --c-mist:#6B8A99;
  --c-bg:#F7F9FA;
  --c-card:#FFFFFF;
  --c-inset:#F1F5F7;
  --c-dark:#0E3A48;
  --c-text:#1F2A30;
  --c-text-2:#5C6B73;
  --c-text-3:#8A979E;
  --c-line:#E3EAEE;
  --focus-ring:0 0 0 3px rgba(20,131,159,.28);
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,58,73,.05), 0 10px 28px -14px rgba(16,58,73,.18);
  --sh-2:0 2px 6px rgba(16,58,73,.07), 0 18px 40px -18px rgba(16,58,73,.26);
  --sp-section:88px;
  --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"PingFang SC",sans-serif;
}

/* ============ 02 base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-primary-light);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--c-primary-dark)}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--c-text);letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0}
svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:6px}

/* ============ 03 layout ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sp-section) 0;position:relative;overflow:hidden}
.section-alt{background:var(--c-card);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-title{position:relative;padding-left:16px;font-size:32px;line-height:1.3}
.section-title::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:1em;background:var(--c-primary);border-radius:2px}
.sec-num{display:block;font-family:var(--font-num);font-size:14px;font-weight:700;letter-spacing:.16em;color:rgba(14,90,115,.3);margin-bottom:6px;padding-left:16px}
.section-desc{color:var(--c-text-2);font-size:15px;max-width:620px}
.arc-deco{position:absolute;right:-120px;bottom:-120px;width:420px;height:420px;border-radius:50%;border:1px solid rgba(14,90,115,.04);box-shadow:0 0 0 60px rgba(14,90,115,.025),0 0 0 130px rgba(14,90,115,.018);pointer-events:none;z-index:0}
.section > .container{position:relative;z-index:1}

/* ============ 04 buttons & badges ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-weight:500;font-size:15px;border:1px solid transparent;
  transition:transform .16s ease,background-color .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;flex:0 0 18px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px -12px rgba(14,90,115,.7)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:rgba(14,90,115,.35)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.28)}
.btn-light:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:15px;font-weight:500}
.text-link:hover{text-decoration:underline;text-underline-offset:3px;color:var(--c-primary-dark)}
.text-link svg{width:16px;height:16px}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;line-height:1;padding:6px 12px;border-radius:var(--r-pill)}
.badge-cat{background:var(--c-primary-soft);color:var(--c-primary)}
.badge-metric{border:1px solid var(--c-line);color:var(--c-text-2);background:var(--c-card)}
.badge-num{background:var(--c-primary);color:#fff;font-weight:700;font-family:var(--font-num)}

/* ============ 05 header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(16,58,73,.45)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-text)}
.brand:hover{color:var(--c-primary)}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:linear-gradient(180deg,var(--c-primary-light),var(--c-primary));
  color:#fff;display:flex;align-items:center;justify-content:center;padding:8px;
  box-shadow:0 8px 18px -12px rgba(14,90,115,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em}
.brand-sub{font-family:var(--font-num);font-size:11px;letter-spacing:.18em;color:var(--c-text-3);text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:30px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);padding:6px 0}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--c-primary);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .2s ease}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--c-primary)}
.nav-cta{height:42px;padding:0 18px;font-size:14px}
.nav-toggle{display:none;width:42px;height:42px;padding:10px;border:1px solid var(--c-line);border-radius:10px;background:#fff;color:var(--c-primary)}
.nav-toggle:hover{background:var(--c-primary-soft)}

/* ============ 06 breadcrumb & status strip ============ */
.crumb-bar{background:var(--c-card);border-bottom:1px solid var(--c-line)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:16px 0;font-size:14px;color:var(--c-text-3)}
.breadcrumb a{color:var(--c-text-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{font-weight:300;color:var(--c-text-3)}
.breadcrumb .crumb-current{color:var(--c-text-2);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.status-strip{background:var(--c-dark);color:rgba(255,255,255,.82)}
.status-strip .container{display:flex;flex-wrap:wrap;gap:12px 40px;align-items:center;padding-top:14px;padding-bottom:14px}
.status-item{display:flex;align-items:center;gap:10px;font-size:14px}
.status-dot{position:relative;width:8px;height:8px;border-radius:50%;background:var(--c-accent);flex:0 0 8px}
.status-dot::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:1px solid rgba(224,138,46,.5)}
.status-item strong{font-family:var(--font-num);color:#fff;font-weight:600}

/* ============ 07 article ============ */
.article-wrap{padding:56px 0 72px;background:var(--c-bg)}
.article{max-width:820px;margin:0 auto}
.article-head{margin-bottom:32px}
.article-head .badge{margin-bottom:18px}
.article-title{font-size:40px;line-height:1.3;letter-spacing:.005em}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:14px;color:var(--c-text-3)}
.article-meta .dot{color:var(--c-line)}
.article-cover{margin:32px 0 0;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{font-size:13px;color:var(--c-text-3);text-align:center;padding:12px 0 0;background:transparent}
.article-body{
  background:var(--c-card);border-radius:var(--r-card);box-shadow:var(--sh-1);
  padding:48px 52px;margin-top:32px;
}
.article-body > *:first-child{margin-top:0}
.article-body p{font-size:17px;line-height:1.85;color:var(--c-text);margin:0 0 1.2em}
.article-body h2{position:relative;padding-left:16px;font-size:24px;line-height:1.4;margin:40px 0 16px}
.article-body h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:1em;background:var(--c-primary);border-radius:2px}
.article-body h3{font-size:20px;margin:32px 0 12px}
.article-body h4{font-size:18px;margin:24px 0 10px;color:var(--c-text-2)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.5em}
.article-body li{margin:0 0 .55em;font-size:17px;line-height:1.8}
.article-body li::marker{color:var(--c-primary-light)}
.article-body blockquote{
  margin:0 0 1.4em;padding:18px 24px;background:var(--c-primary-soft);
  border-left:4px solid var(--c-primary);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--c-text-2);
}
.article-body blockquote p{margin:0;font-size:16px}
.article-body img{border-radius:var(--r-img);margin:24px 0;width:100%;height:auto}
.article-body figure{margin:0 0 1.4em}
.article-body figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 1.4em;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:11px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--c-inset);font-weight:600}
.article-body code{background:var(--c-inset);padding:2px 6px;border-radius:6px;font-size:14px;font-family:var(--font-num)}
.article-body pre{background:var(--c-dark);color:#E7F1F4;padding:18px 20px;border-radius:var(--r-img);overflow:auto;margin:0 0 1.4em}
.article-body pre code{background:transparent;color:inherit;padding:0}
.article-body a{color:var(--c-primary-light);border-bottom:1px solid rgba(20,131,159,.35)}
.article-body a:hover{color:var(--c-primary-dark)}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}
.article-body strong{font-weight:600}

.action-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  margin-top:32px;padding:22px 0;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.action-source{font-size:14px;color:var(--c-text-2)}
.action-source strong{color:var(--c-text);font-weight:600}
.action-group{display:flex;flex-wrap:wrap;gap:10px}
.action-btn{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;
  border:1px solid var(--c-line);border-radius:var(--r-btn);background:var(--c-card);
  font-size:14px;color:var(--c-text-2);transition:all .18s ease;
}
.action-btn svg{width:16px;height:16px}
.action-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}
.action-btn.is-on{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}

.back-links{display:flex;flex-wrap:wrap;gap:24px;margin-top:28px;font-size:15px}

/* ============ 08 cards ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.card{
  position:relative;display:flex;flex-direction:column;background:var(--c-card);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-primary);z-index:2}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.card-media{overflow:hidden;background:var(--c-inset)}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-title{font-size:19px;line-height:1.45;font-weight:600}
.card-title a{color:var(--c-text)}
.card-title a:hover{color:var(--c-primary)}
.card-text{font-size:15px;line-height:1.7;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:8px;font-size:13px;color:var(--c-text-3);font-family:var(--font-num)}
.card-meta .arrow{width:18px;height:18px;color:var(--c-primary-light)}

/* ============ 09 cta band ============ */
.cta-band{background:var(--c-dark);border-radius:var(--r-card);padding:44px 48px;color:rgba(255,255,255,.82);position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-100px;top:-100px;width:320px;height:320px;border-radius:50%;border:1px solid rgba(255,255,255,.06);box-shadow:0 0 0 46px rgba(255,255,255,.03),0 0 0 96px rgba(255,255,255,.02)}
.cta-band-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-band h2{color:#fff;font-size:26px;line-height:1.4;margin-bottom:10px}
.cta-band p{font-size:15px;max-width:560px;color:rgba(255,255,255,.75)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-points{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
.cta-points span{display:inline-flex;align-items:center;gap:8px;font-size:13px;padding:6px 12px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.22);color:rgba(255,255,255,.8)}

/* ============ 10 empty state ============ */
.empty-state{text-align:center;padding:64px 32px;background:var(--c-card);border-radius:var(--r-card);box-shadow:var(--sh-1);max-width:820px;margin:32px auto 0}
.empty-state .empty-icon{width:56px;height:56px;margin:0 auto 20px;color:var(--c-mist)}
.empty-state h2{font-size:22px;margin-bottom:12px}
.empty-state p{color:var(--c-text-2);font-size:15px;margin-bottom:24px}

/* ============ 11 footer ============ */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.8);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none}
.footer-brand .brand-name{color:#fff;font-size:17px;font-weight:700}
.footer-desc{font-size:14px;line-height:1.75;color:rgba(255,255,255,.66);max-width:320px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-list{display:flex;flex-direction:column;gap:12px;font-size:14px}
.footer-list a{color:rgba(255,255,255,.72)}
.footer-list a:hover{color:#fff}
.footer-list span{color:rgba(255,255,255,.55)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(255,255,255,.55)}

/* ============ 12 responsive ============ */
@media (max-width:1279px){
  .article-title{font-size:36px}
  .card-grid{gap:20px}
}
@media (max-width:1023px){
  :root{--sp-section:64px}
  .section-title{font-size:26px}
  .article-body{padding:36px 32px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--sp-section:48px}
  body{font-size:16px}
  .container{padding:0 18px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .main-nav{
    position:fixed;left:0;right:0;top:68px;bottom:0;flex-direction:column;align-items:stretch;
    gap:0;background:#fff;padding:12px 18px 32px;border-top:1px solid var(--c-line);
    opacity:0;transform:translateY(-8px);pointer-events:none;transition:opacity .2s ease,transform .2s ease;
    overflow-y:auto;z-index:70;
  }
  .main-nav.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
  .nav-link{padding:16px 0;border-bottom:1px solid var(--c-line);font-size:16px}
  .nav-link::after{display:none}
  .nav-cta{width:100%;margin-top:20px;height:46px}
  .article-title{font-size:28px}
  .article-body{padding:26px 20px;border-radius:12px}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:19px}
  .article-cover img{aspect-ratio:4/3}
  .card-grid{grid-template-columns:1fr}
  .card{border-radius:12px}
  .cta-band{padding:32px 24px}
  .cta-band h2{font-size:22px}
  .cta-actions .btn{width:100%}
  .action-bar{flex-direction:column;align-items:flex-start}
  .back-links{gap:16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .status-strip .container{gap:10px 22px}
}
@media (max-width:479px){
  .article-title{font-size:25px}
  .section-title{font-size:24px}
  .breadcrumb .crumb-current{max-width:32ch}
  .article-meta{font-size:13px}
}

/* roulang page: category1 */
/* ============ 01 tokens ============ */
:root{
  --pri:#0E5A73;
  --pri-l:#14839F;
  --pri-deep:#0B4D63;
  --pri-soft:#EAF4F7;
  --mist:#6B8A99;
  --amber:#E08A2E;
  --bg:#F7F9FA;
  --card:#FFFFFF;
  --inset:#F1F5F7;
  --ink:#1F2A30;
  --ink-2:#5C6B73;
  --ink-3:#8A979E;
  --line:#E3EAEE;
  --dark:#0E3A48;
  --ring:rgba(20,131,159,.28);
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --shadow:0 1px 2px rgba(16,58,73,.05), 0 10px 28px -14px rgba(16,58,73,.18);
  --shadow-h:0 2px 6px rgba(16,58,73,.07), 0 18px 40px -18px rgba(16,58,73,.26);
  --header-h:68px;
  --sec-pad:88px;
  --gap:28px;
}
/* ============ 02 base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--ink)}
p{margin:0}
a{color:var(--pri);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--pri-l)}
img{max-width:100%;display:block;object-fit:cover}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
svg{display:block;width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid var(--ring);outline-offset:2px;border-radius:4px}
::selection{background:var(--pri-soft);color:var(--pri-deep)}
/* ============ 03 layout ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
main{display:block}
.section{padding:var(--sec-pad) 0;position:relative;overflow:hidden}
.section--inset{background:var(--inset)}
.section--plain{background:var(--card)}
.sec-head{max-width:780px;margin-bottom:32px}
.sec-title{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:12px;
  font-size:32px;
  line-height:1.35;
  padding-left:16px;
  letter-spacing:-.2px;
}
.sec-title::before{
  content:"";
  position:absolute;
  left:0;
  top:.18em;
  width:4px;
  height:.92em;
  background:var(--pri);
  border-radius:2px;
}
.sec-num{
  font-family:Inter,system-ui,sans-serif;
  font-size:15px;
  font-weight:700;
  letter-spacing:.06em;
  color:rgba(14,90,115,.32);
}
.sec-sub{margin-top:14px;color:var(--ink-2);font-size:16px;line-height:1.8;padding-left:16px}
.deco-arc{
  position:absolute;
  right:-140px;
  bottom:-140px;
  width:420px;
  height:420px;
  border-radius:50%;
  border:1px solid rgba(14,90,115,.045);
  pointer-events:none;
}
.deco-arc::after{
  content:"";
  position:absolute;
  inset:60px;
  border-radius:50%;
  border:1px solid rgba(14,90,115,.04);
}
/* ============ 04 header / nav ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease,border-color .22s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(16,58,73,.35);border-color:#D7E1E6}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:var(--header-h);
}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  display:grid;place-items:center;
  border-radius:11px;
  background:var(--pri-soft);
  color:var(--pri);
  padding:8px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.1px}
.brand-sub{
  font-family:Inter,system-ui,sans-serif;
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ink-3);
}
.main-nav{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;
  font-size:15.5px;
  font-weight:500;
  color:var(--ink-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--pri);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--pri)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--pri);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-cta{color:#fff !important}
.nav-cta::after{display:none}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  padding:9px;
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--pri);
  transition:background .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:var(--pri-soft);border-color:#CFE0E6}
/* ============ 05 buttons / badges ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15.5px;
  font-weight:500;
  letter-spacing:.01em;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn svg{width:17px;height:17px;flex:0 0 17px}
.btn-primary{background:var(--pri);color:#fff;box-shadow:0 10px 24px -16px rgba(14,90,115,.75)}
.btn-primary:hover{background:var(--pri-deep);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border:1px solid var(--pri);color:var(--pri);background:transparent}
.btn-ghost:hover{background:var(--pri-soft);color:var(--pri-deep)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.btn-sm{height:40px;padding:0 16px;font-size:14.5px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:500;color:var(--pri);
}
.link-more svg{width:15px;height:15px;transition:transform .18s ease}
.link-more:hover{text-decoration:underline;text-underline-offset:3px}
.link-more:hover svg{transform:translateX(3px)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 11px;
  border-radius:999px;
  font-size:13px;font-weight:500;line-height:1;
  white-space:nowrap;
}
.badge-cat{background:var(--pri-soft);color:var(--pri)}
.badge-metric{border:1px solid var(--line);color:var(--ink-2);background:#fff}
.badge-num{background:var(--pri);color:#fff;font-family:Inter,system-ui,sans-serif;font-weight:700}
.dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--amber);
  flex:0 0 7px;
  display:inline-block;
}
/* ============ 06 breadcrumb ============ */
.crumb{background:#fff;border-bottom:1px solid var(--line)}
.crumb .container{
  display:flex;align-items:center;gap:10px;
  height:52px;
  font-size:14px;
  color:var(--ink-3);
}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--pri)}
.crumb-sep{color:#C4D1D7;font-weight:300}
.crumb-current{color:var(--ink-3)}
/* ============ 07 category hero ============ */
.cat-hero{
  position:relative;
  background-image:linear-gradient(100deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.9) 46%,rgba(234,244,247,.86) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
}
.cat-hero-inner{
  position:relative;
  z-index:2;
  padding:56px 0 52px;
  max-width:760px;
}
.cat-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 13px;
  border-radius:999px;
  background:#fff;
  border:1px solid #D5E4EA;
  color:var(--pri);
  font-size:13px;font-weight:500;
  margin-bottom:20px;
}
.cat-hero h1{
  font-size:34px;
  line-height:1.32;
  letter-spacing:-.4px;
}
.cat-hero h1 em{
  font-style:normal;
  color:var(--pri);
}
.cat-hero p{
  margin-top:16px;
  font-size:16.5px;
  color:var(--ink-2);
  line-height:1.85;
  max-width:680px;
}
.cat-meta{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:24px;
}
/* ============ 08 anchor nav ============ */
.anchor-bar{
  position:sticky;
  top:var(--header-h);
  z-index:100;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.anchor-nav{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  height:58px;
}
.anchor-nav::-webkit-scrollbar{display:none}
.anchor-nav a{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 15px;
  border-radius:999px;
  font-size:14.5px;
  font-weight:500;
  color:var(--ink-2);
  white-space:nowrap;
  border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.anchor-nav a:hover{background:var(--pri-soft);color:var(--pri-deep)}
.anchor-nav a.is-active{
  background:var(--pri-soft);
  border-color:#CFE0E6;
  color:var(--pri);
  font-weight:600;
}
/* ============ 09 status panel ============ */
.status-panel{
  background:var(--dark);
  border-radius:var(--r-card);
  padding:32px 34px;
  color:rgba(255,255,255,.82);
  position:relative;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.status-panel::before{
  content:"";
  position:absolute;
  right:-90px;top:-90px;
  width:280px;height:280px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.07);
}
.status-panel::after{
  content:"";
  position:absolute;
  right:-30px;top:-30px;
  width:160px;height:160px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.05);
}
.status-title{
  display:flex;align-items:center;gap:10px;
  color:#fff;
  font-size:19px;
  font-weight:600;
  margin-bottom:6px;
}
.status-note{font-size:14.5px;color:rgba(255,255,255,.6);margin-bottom:26px}
.status-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;
  background:rgba(255,255,255,.1);
  border-radius:10px;
  overflow:hidden;
  position:relative;
  z-index:2;
}
.status-cell{
  background:var(--dark);
  padding:20px 20px 22px;
}
.status-cell strong{
  display:block;
  font-family:Inter,system-ui,sans-serif;
  font-size:24px;
  font-weight:700;
  color:#fff;
  letter-spacing:-.4px;
  line-height:1.2;
}
.status-cell span{
  display:block;
  margin-top:8px;
  font-size:14px;
  color:rgba(255,255,255,.62);
  line-height:1.6;
}
/* ============ 10 entry grid (two uneven columns) ============ */
.entry-cols{
  display:grid;
  grid-template-columns:1.45fr 1fr;
  gap:var(--gap);
  align-items:start;
  margin-top:44px;
}
.entry-col{display:flex;flex-direction:column;gap:var(--gap)}
.entry-col--side{padding-top:64px}
.entry-card{
  position:relative;
  display:block;
  background:var(--card);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease;
}
.entry-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:var(--pri);
  z-index:3;
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);color:inherit}
.entry-media{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--inset);
}
.entry-media img{width:100%;height:100%;border-radius:0;transition:transform .4s ease}
.entry-card:hover .entry-media img{transform:scale(1.03)}
.entry-body{padding:22px 24px 24px}
.entry-card h3{
  font-size:20px;
  line-height:1.45;
  margin-bottom:10px;
  transition:color .18s ease;
}
.entry-card:hover h3{color:var(--pri)}
.entry-card--lead h3{font-size:23px}
.entry-desc{
  font-size:15px;
  line-height:1.75;
  color:var(--ink-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.entry-meta{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--ink-3);
}
.entry-meta .arrow{
  margin-left:auto;
  width:18px;height:18px;
  color:var(--pri);
  transition:transform .2s ease;
}
.entry-card:hover .arrow{transform:translateX(4px)}
/* ============ 11 feature rows ============ */
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.feature-row + .feature-row{margin-top:72px}
.feature-row--rev .feature-media{order:2}
.feature-media{
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  background:var(--inset);
}
.feature-media img{width:100%;aspect-ratio:4/3}
.feature-body h3{
  font-size:24px;
  line-height:1.4;
  margin-bottom:16px;
  padding-left:14px;
  position:relative;
}
.feature-body h3::before{
  content:"";
  position:absolute;
  left:0;top:.2em;
  width:4px;height:.86em;
  background:var(--pri);
  border-radius:2px;
}
.feature-body p{color:var(--ink-2);font-size:16px;line-height:1.85}
.feature-list{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.feature-list li{
  display:flex;
  gap:10px;
  font-size:15.5px;
  color:var(--ink-2);
  line-height:1.7;
}
.feature-list svg{
  width:18px;height:18px;flex:0 0 18px;
  margin-top:4px;
  color:var(--pri-l);
}
/* ============ 12 faq ============ */
.faq-wrap{max-width:880px}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#CFE0E6;box-shadow:var(--shadow)}
.faq-q{
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 24px;
  font-size:18px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  list-style:none;
  transition:color .18s ease;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q:hover{color:var(--pri)}
.faq-ico{
  margin-left:auto;
  width:26px;height:26px;
  flex:0 0 26px;
  padding:5px;
  border-radius:50%;
  background:var(--pri-soft);
  color:var(--pri);
}
.faq-ico .v{transition:opacity .18s ease}
.faq-item[open] .faq-ico .v{opacity:0}
.faq-item[open] .faq-ico{background:var(--pri);color:#fff}
.faq-a{
  padding:0 24px 22px 64px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}
/* ============ 13 cta band ============ */
.cta-band{
  background:var(--pri-soft);
  border-left:4px solid var(--pri);
  border-radius:var(--r-card);
  padding:34px 36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h3{font-size:22px;line-height:1.45;margin-bottom:8px}
.cta-band p{font-size:15.5px;color:var(--ink-2);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
/* ============ 14 footer ============ */
.site-footer{
  background:var(--dark);
  color:rgba(255,255,255,.8);
  padding:64px 0 28px;
  font-size:15px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:11px;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);color:#fff}
.footer-brand .brand-name{font-size:17px;font-weight:700;color:#fff}
.footer-desc{font-size:14.5px;line-height:1.75;color:rgba(255,255,255,.62);max-width:300px}
.footer-title{
  font-size:14px;
  font-weight:600;
  color:#fff;
  letter-spacing:.04em;
  margin-bottom:18px;
}
.footer-list{display:flex;flex-direction:column;gap:11px}
.footer-list a,.footer-list span{
  font-size:14.5px;
  color:rgba(255,255,255,.72);
  line-height:1.6;
}
.footer-list a:hover{color:#fff}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:13.5px;
  color:rgba(255,255,255,.5);
}
/* ============ 15 responsive ============ */
@media (max-width:1279px){
  :root{--sec-pad:76px;--gap:24px}
  .cat-hero h1{font-size:31px}
  .sec-title{font-size:29px}
}
@media (max-width:1023px){
  :root{--sec-pad:64px;--gap:20px}
  .main-nav{gap:22px}
  .nav-link{font-size:15px}
  .entry-cols{grid-template-columns:1fr 1fr;gap:20px}
  .entry-col--side{padding-top:40px}
  .entry-card--lead h3{font-size:20px}
  .status-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .feature-row{gap:34px}
}
@media (max-width:767px){
  :root{--header-h:60px;--sec-pad:48px}
  body{font-size:16px}
  .container{padding:0 18px}
  .nav-toggle{display:block}
  .main-nav{
    position:fixed;
    top:var(--header-h);
    left:0;right:0;
    bottom:0;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:14px 18px 36px;
    border-top:1px solid var(--line);
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
    overflow-y:auto;
    z-index:130;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-link{
    padding:16px 4px;
    font-size:17px;
    border-bottom:1px solid var(--line);
  }
  .nav-link::after{display:none}
  .nav-link.active{color:var(--pri)}
  .nav-cta{margin-top:22px;height:48px}
  .cat-hero{background-position:center}
  .cat-hero-inner{padding:40px 0 38px}
  .cat-hero h1{font-size:26px}
  .cat-hero p{font-size:15.5px}
  .sec-title{font-size:25px}
  .sec-sub{padding-left:0;font-size:15px}
  .sec-title{padding-left:0}
  .sec-title::before{position:static;display:inline-block;margin-right:10px;transform:translateY(-2px)}
  .sec-title{align-items:center;gap:8px}
  .status-panel{padding:24px 20px}
  .status-grid{grid-template-columns:1fr}
  .entry-cols{grid-template-columns:1fr;gap:18px}
  .entry-col{gap:18px}
  .entry-col--side{padding-top:0}
  .entry-card{border-radius:12px}
  .entry-card--lead .entry-media{aspect-ratio:16/10}
  .entry-body{padding:18px 18px 20px}
  .entry-card h3,.entry-card--lead h3{font-size:18px}
  .feature-row,.feature-row--rev{grid-template-columns:1fr;gap:22px}
  .feature-row--rev .feature-media{order:0}
  .feature-row + .feature-row{margin-top:48px}
  .feature-body h3{font-size:20px}
  .faq-q{padding:16px 18px;font-size:16.5px}
  .faq-a{padding:0 18px 18px 18px;font-size:14.5px}
  .cta-band{padding:26px 20px;border-left-width:4px}
  .cta-band h3{font-size:19px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:48px 0 24px}
}
@media (max-width:479px){
  .cat-hero h1{font-size:23px}
  .sec-title{font-size:22px}
  .brand-sub{display:none}
  .btn{width:100%}
  .cta-actions{flex-direction:column}
  .faq-q{font-size:15.5px}
  .status-cell strong{font-size:21px}
}

/* roulang page: category2 */
/* ===== 01 tokens ===== */
:root{
  --c-primary:#0E5A73;
  --c-primary-hover:#0B4D63;
  --c-primary-2:#14839F;
  --c-primary-soft:#EAF4F7;
  --c-mute:#6B8A99;
  --c-amber:#E08A2E;
  --c-bg:#F7F9FA;
  --c-card:#FFFFFF;
  --c-inset:#F1F5F7;
  --c-text:#1F2A30;
  --c-text-2:#5C6B73;
  --c-text-3:#8A979E;
  --c-line:#E3EAEE;
  --c-dark:#0E3A48;
  --c-dark-2:#124A5C;
  --focus:rgba(20,131,159,.28);
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-badge:999px;
  --sh-1:0 1px 2px rgba(16,58,73,.05),0 10px 28px -14px rgba(16,58,73,.18);
  --sh-2:0 2px 6px rgba(16,58,73,.07),0 18px 40px -18px rgba(16,58,73,.26);
  --sp-sec:88px;
  --trans:.22s cubic-bezier(.4,0,.2,1);
}
/* ===== 02 base ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--trans);}
a:hover{color:var(--c-primary-2);}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.34;color:var(--c-text);letter-spacing:.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
svg{fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
:focus-visible{outline:none;box-shadow:0 0 0 3px var(--focus);border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sp-sec) 0;position:relative;overflow:hidden;}
.section-alt{background:var(--c-card);}
.section-title{
  display:flex;align-items:center;gap:12px;
  font-size:32px;font-weight:700;line-height:1.3;
}
.section-title::before{
  content:"";width:4px;height:30px;border-radius:2px;background:var(--c-primary);flex:none;
}
.section-index{
  font-size:15px;font-weight:700;color:var(--c-primary);opacity:.3;letter-spacing:1px;
  font-variant-numeric:tabular-nums;
}
.section-head{margin-bottom:32px;}
.section-lead{margin-top:14px;color:var(--c-text-2);font-size:16px;max-width:760px;}
.deco-arc{
  position:absolute;right:-120px;bottom:-140px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(14,90,115,.05);box-shadow:0 0 0 60px rgba(14,90,115,.02),0 0 0 130px rgba(14,90,115,.015);
  pointer-events:none;
}
.deco-grid{
  position:absolute;left:-60px;top:-40px;width:280px;height:220px;pointer-events:none;opacity:.04;
  background-image:linear-gradient(var(--c-primary) 1px,transparent 1px),linear-gradient(90deg,var(--c-primary) 1px,transparent 1px);
  background-size:28px 28px;
}
/* ===== 03 header ===== */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--trans),border-color var(--trans);
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(16,58,73,.35);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--c-text);}
.brand:hover{color:var(--c-text);}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary);color:#fff;
}
.brand-mark svg{width:21px;height:21px;stroke-width:1.7;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.3px;color:var(--c-primary);}
.brand-sub{font-size:10px;letter-spacing:1.6px;color:var(--c-text-3);text-transform:uppercase;}
.main-nav{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform var(--trans);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--c-primary);font-weight:600;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;letter-spacing:.2px;
  transition:background var(--trans),color var(--trans),box-shadow var(--trans),transform var(--trans),border-color var(--trans);
  white-space:nowrap;
}
.btn svg{width:17px;height:17px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px -12px rgba(14,90,115,.6);}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(14,90,115,.7);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--c-primary);border:1px solid var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}
.nav-cta{height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;color:var(--c-primary);
  border:1px solid var(--c-line);background:#fff;
}
.nav-toggle svg{width:22px;height:22px;}
.nav-toggle:hover{background:var(--c-primary-soft);}
/* ===== 04 breadcrumb ===== */
.crumb-bar{border-bottom:1px solid var(--c-line);background:var(--c-card);}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:14px 0;font-size:14px;color:var(--c-text-3);}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-text-3);font-weight:300;}
.crumb .current{color:var(--c-text);font-weight:500;}
/* ===== 05 category hero ===== */
.cat-hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(255,255,255,.94) 0%,rgba(255,255,255,.86) 52%,rgba(234,244,247,.78) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.cat-hero-inner{padding:58px 0 52px;max-width:860px;}
.cat-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-badge);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;font-weight:600;letter-spacing:.4px;
}
.cat-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--c-amber);}
.cat-hero h1{
  margin:18px 0 14px;font-size:34px;font-weight:700;line-height:1.35;letter-spacing:.3px;
}
.cat-hero p{font-size:16px;color:var(--c-text-2);max-width:700px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.metric-badge{
  display:inline-flex;align-items:center;gap:7px;
  border:1px solid var(--c-line);background:rgba(255,255,255,.86);
  border-radius:var(--r-badge);padding:7px 15px;
  font-size:13px;color:var(--c-text-2);
}
.metric-badge svg{width:15px;height:15px;color:var(--c-primary);}
/* ===== 06 anchor nav ===== */
.anchor-bar{
  position:sticky;top:72px;z-index:40;
  background:rgba(255,255,255,.97);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
}
.anchor-list{
  display:flex;gap:6px;overflow-x:auto;padding:10px 0;scrollbar-width:none;
}
.anchor-list::-webkit-scrollbar{display:none;}
.anchor-link{
  flex:none;padding:8px 15px;border-radius:var(--r-badge);
  font-size:14px;font-weight:500;color:var(--c-text-2);
  border:1px solid transparent;transition:all var(--trans);
}
.anchor-link:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.anchor-link.is-active{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
/* ===== 07 stats strip ===== */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--c-line);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  margin-top:-34px;position:relative;z-index:20;box-shadow:var(--sh-1);
}
.stat-cell{background:var(--c-card);padding:22px 24px;}
.stat-num{font-size:26px;font-weight:700;color:var(--c-primary);line-height:1.2;font-variant-numeric:tabular-nums;}
.stat-label{margin-top:6px;font-size:13px;color:var(--c-text-2);letter-spacing:.2px;}
/* ===== 08 numbered list ===== */
.num-list{border-top:1px solid var(--c-line);}
.num-item{
  display:flex;gap:20px;align-items:flex-start;
  padding:24px 18px 24px 14px;border-bottom:1px solid var(--c-line);
  transition:background var(--trans),transform var(--trans);
}
.num-item:hover{background:var(--c-primary-soft);}
.num-badge{
  flex:none;width:46px;height:46px;border-radius:12px;
  background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;font-variant-numeric:tabular-nums;
  letter-spacing:.5px;
}
.num-item:nth-child(3n) .num-badge{background:var(--c-primary-2);}
.num-body{flex:1;min-width:0;}
.num-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.num-head h3{font-size:19px;font-weight:600;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:var(--r-badge);font-size:13px;line-height:1;padding:6px 12px;
}
.badge-cat{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}
.badge-line{border:1px solid var(--c-line);color:var(--c-text-2);background:#fff;}
.badge-amber{background:rgba(224,138,46,.12);color:#A6600F;font-weight:600;}
.num-desc{margin-top:9px;color:var(--c-text-2);font-size:15.5px;line-height:1.75;}
.num-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:13px;font-size:13.5px;color:var(--c-text-3);}
.num-meta .link-arrow{display:inline-flex;align-items:center;gap:5px;font-weight:500;color:var(--c-primary);}
.num-meta .link-arrow svg{width:15px;height:15px;transition:transform var(--trans);}
.num-item:hover .link-arrow svg{transform:translateX(4px);}
/* ===== 09 dark status panel ===== */
.status-panel{
  background:var(--c-dark);border-radius:var(--r-card);padding:34px 36px;color:rgba(255,255,255,.86);
  position:relative;overflow:hidden;
}
.status-panel::after{
  content:"";position:absolute;right:-90px;top:-90px;width:260px;height:260px;border-radius:50%;
  border:1px solid rgba(255,255,255,.06);box-shadow:0 0 0 46px rgba(255,255,255,.025);
}
.status-panel h3{color:#fff;font-size:22px;font-weight:600;}
.status-panel > p{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.72);max-width:720px;}
.stage-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px;position:relative;z-index:2;
}
.stage-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:12px;padding:20px;
}
.stage-top{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);letter-spacing:.4px;}
.stage-dot{width:8px;height:8px;border-radius:50%;background:var(--c-amber);box-shadow:0 0 0 4px rgba(224,138,46,.18);}
.stage-card strong{display:block;margin-top:12px;font-size:18px;font-weight:600;color:#fff;}
.stage-card span{display:block;margin-top:8px;font-size:14px;color:rgba(255,255,255,.68);line-height:1.7;}
/* ===== 10 split feature ===== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split.reverse .split-media{order:2;}
.split-media{position:relative;}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--sh-1);
}
.split-media .media-tag{
  position:absolute;left:16px;top:16px;
  background:rgba(255,255,255,.94);border-radius:var(--r-badge);
  padding:7px 14px;font-size:13px;font-weight:600;color:var(--c-primary);
  box-shadow:0 6px 16px -10px rgba(16,58,73,.5);
}
.split-body h3{font-size:22px;font-weight:600;margin-bottom:14px;}
.split-body p{color:var(--c-text-2);font-size:16px;line-height:1.8;}
.check-list{margin-top:22px;display:grid;gap:12px;}
.check-list li{display:flex;gap:11px;align-items:flex-start;font-size:15.5px;color:var(--c-text);}
.check-list svg{width:19px;height:19px;flex:none;margin-top:4px;color:var(--c-primary);}
/* ===== 11 faq ===== */
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;transition:box-shadow var(--trans),border-color var(--trans);
}
.faq-item[open]{box-shadow:var(--sh-1);border-color:#D7E3E9;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  font-size:18px;font-weight:600;color:var(--c-text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:8px;background:var(--c-primary-soft);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;
  transition:transform var(--trans),background var(--trans),color var(--trans);
}
.faq-icon svg{width:15px;height:15px;transition:transform var(--trans);}
.faq-item[open] .faq-icon{background:var(--c-primary);color:#fff;}
.faq-item[open] .faq-icon svg{transform:rotate(135deg);}
.faq-answer{padding:0 22px 22px;color:var(--c-text-2);font-size:15.5px;line-height:1.85;}
/* ===== 12 cta band ===== */
.cta-band{
  background:var(--c-primary-soft);border-left:4px solid var(--c-primary);
  border-radius:var(--r-card);padding:30px 34px;
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
}
.cta-band h3{font-size:22px;font-weight:600;}
.cta-band p{margin-top:8px;color:var(--c-text-2);font-size:15.5px;max-width:640px;}
/* ===== 13 form ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:start;}
.point-list{display:grid;gap:18px;margin-top:26px;}
.point-item{display:flex;gap:13px;align-items:flex-start;}
.point-item svg{width:20px;height:20px;flex:none;margin-top:5px;color:var(--c-primary);}
.point-item strong{display:block;font-size:16px;font-weight:600;}
.point-item span{display:block;margin-top:4px;font-size:14.5px;color:var(--c-text-2);}
.form-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--c-text);}
.field input,.field textarea,.field select{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:#fff;color:var(--c-text);
  transition:border-color var(--trans),box-shadow var(--trans);
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3);}
.field input:focus,.field textarea:focus,.field select:focus{
  border-color:var(--c-primary-2);box-shadow:0 0 0 3px var(--focus);outline:none;
}
.form-note{font-size:13px;color:var(--c-text-3);margin-top:12px;}
.form-alert{
  margin-top:16px;padding:12px 15px;border-radius:10px;font-size:14px;
  background:var(--c-primary-soft);color:var(--c-primary);display:none;
}
.form-alert.is-visible{display:block;}
/* ===== 14 footer ===== */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.8);margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:44px;
  padding:66px 0 46px;
}
.footer-brand{display:flex;align-items:center;gap:11px;color:#fff;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-brand .brand-name{color:#fff;font-size:17px;font-weight:700;}
.footer-desc{margin-top:16px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.3px;}
.footer-list{display:grid;gap:12px;font-size:14.5px;}
.footer-list a{color:rgba(255,255,255,.72);}
.footer-list a:hover{color:#fff;}
.footer-list span{color:rgba(255,255,255,.6);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.58);
}
/* ===== 15 responsive ===== */
@media (max-width:1279px){
  .cat-hero h1{font-size:32px;}
  .section-title{font-size:28px;}
  .footer-grid{gap:32px;}
}
@media (max-width:1023px){
  :root{--sp-sec:64px;}
  .header-inner{height:66px;}
  .anchor-bar{top:66px;}
  .split{gap:36px;}
  .contact-grid{grid-template-columns:1fr;gap:38px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:767px){
  :root{--sp-sec:48px;}
  body{font-size:16px;}
  .container{padding:0 18px;}
  .main-nav{
    position:fixed;inset:66px 0 0 0;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;
    padding:22px 18px 32px;transform:translateY(-10px);
    opacity:0;visibility:hidden;transition:opacity .2s ease,transform .2s ease,visibility .2s;
    overflow-y:auto;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-link{padding:16px 4px;border-bottom:1px solid var(--c-line);font-size:16px;}
  .nav-link::after{display:none;}
  .nav-cta{margin-top:22px;height:46px;justify-content:center;}
  .nav-toggle{display:flex;}
  .cat-hero-inner{padding:40px 0 36px;}
  .cat-hero h1{font-size:27px;}
  .section-title{font-size:24px;}
  .section-title::before{height:24px;}
  .split{grid-template-columns:1fr;gap:26px;}
  .split.reverse .split-media{order:0;}
  .stage-row{grid-template-columns:1fr;}
  .status-panel{padding:26px 22px;}
  .cta-band{padding:24px 20px;flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
  .stat-strip{margin-top:-20px;}
  .num-item{gap:14px;padding:20px 12px;}
  .num-badge{width:40px;height:40px;font-size:14px;}
  .faq-item summary{font-size:16.5px;padding:17px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding:48px 0 34px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .form-card{padding:22px 18px;}
}
@media (max-width:479px){
  .cat-hero h1{font-size:24px;}
  .section-title{font-size:22px;}
  .stat-cell{padding:18px;}
  .stat-num{font-size:22px;}
  .num-head h3{font-size:17px;}
  .badge{font-size:12px;padding:5px 10px;}
  .btn{width:100%;}
  .btn-sm,.nav-cta{width:auto;}
  .faq-item summary{font-size:15.5px;}
}