/* roulang page: index */
:root{
  --primary:#1E5B8C;
  --primary-dark:#17496F;
  --primary-light:#E8F1F7;
  --green:#2C8A72;
  --green-light:#E6F3EF;
  --accent:#E07B39;
  --accent-dark:#C96A2C;
  --bg:#F4F7FA;
  --card:#FFFFFF;
  --dark:#12283A;
  --border:#E1E8EF;
  --border-soft:#E7EDF3;
  --text:#12202E;
  --text-2:#43586C;
  --text-3:#7C8FA0;
  --white-2:#F2F6F9;
  --shadow-sm:0 1px 2px rgba(18,40,62,.05),0 8px 24px rgba(18,40,62,.06);
  --shadow-lg:0 12px 28px rgba(18,40,62,.10);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-badge:6px;
  --container:1200px;
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
figure{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
::selection{background:var(--primary-light);color:var(--primary-dark)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 48px}
.section{padding:72px 0}
.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:14px;font-size:30px;line-height:1.27;font-weight:700;letter-spacing:.01em;color:var(--text)}
.section-title::before{content:"";position:absolute;left:0;top:6px;width:3px;height:20px;background:var(--primary);border-radius:2px}
.section-sub{margin-top:10px;padding-left:14px;max-width:620px;color:var(--text-2);font-size:15px;line-height:1.7}
.section-more{color:var(--primary);font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:color .16s ease,gap .16s ease}
.section-more:hover{color:var(--primary-dark);gap:10px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border-soft);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(18,40,62,.07)}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--header-h)}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:24px;height:24px;flex-shrink:0}
.brand-name{font-size:18px;font-weight:700;color:var(--primary-dark);letter-spacing:.01em}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0;transition:color .16s ease}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:center;transition:transform .18s ease}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.search-box{position:relative;display:flex;align-items:center}
.search-box svg{position:absolute;left:12px;width:15px;height:15px;color:var(--text-3);pointer-events:none}
.search-box input{
  width:220px;height:38px;padding:0 14px 0 34px;
  background:var(--bg);border:1px solid var(--border);border-radius:var(--r-btn);
  font-size:14px;color:var(--text);transition:border-color .16s ease,box-shadow .16s ease,background .16s ease;
}
.search-box input::placeholder{color:var(--text-3)}
.search-box input:focus{outline:none;background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,91,140,.08)}
.link-btn{font-size:14px;font-weight:500;color:var(--text-2);white-space:nowrap;transition:color .16s ease}
.link-btn:hover{color:var(--primary)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:48px;padding:0 26px;font-size:16px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 1px 2px rgba(18,40,62,.08)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:#fff;color:var(--primary);border-color:#CFDFEB}
.btn-ghost:hover{background:var(--primary-light);border-color:#B9D2E3;transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0);filter:brightness(.96)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;transform:none}
.nav-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;border-radius:var(--r-btn);border:1px solid var(--border);background:#fff;color:var(--text-2)}
.nav-toggle:hover{color:var(--primary);border-color:#CFDFEB}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(18,40,62,.42);opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:90}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:340px;z-index:91;
  background:#fff;padding:20px;display:flex;flex-direction:column;gap:18px;
  transform:translateX(100%);transition:transform .26s ease;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:36px;height:36px;border-radius:var(--r-btn);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--text-2)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;height:48px;border-bottom:1px solid var(--border-soft);font-size:15px;color:var(--text-2)}
.drawer-nav a.active{color:var(--primary);font-weight:600}
.drawer .search-box input{width:100%}
.drawer .btn{width:100%}

/* ---------- hero ---------- */
.hero{padding:56px 0 64px;background:
  radial-gradient(1100px 380px at 12% -10%,rgba(30,91,140,.06),transparent 70%),
  linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--border-soft);overflow:hidden;position:relative}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,480px);gap:56px;align-items:center;position:relative}
.hero-copy{max-width:560px}
.pill{display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:100px;background:var(--green-light);color:var(--green);font-size:12px;font-weight:600;letter-spacing:.04em}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--green)}
.hero h1{margin-top:20px;font-size:40px;line-height:1.24;font-weight:700;letter-spacing:.01em;color:var(--text)}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.76;color:var(--text-2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-stats{display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:34px}
.hero-stats li{display:flex;flex-direction:column;gap:2px;padding:0 26px;border-left:1px solid var(--border)}
.hero-stats li:first-child{padding-left:0;border-left:0}
.stat-num{font-size:24px;font-weight:700;color:var(--primary);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-label{font-size:13px;color:var(--text-3)}
.hero-visual{position:relative}
.hero-visual .frame{border:1px solid var(--border);border-radius:var(--r-img);overflow:hidden;box-shadow:var(--shadow-sm);background:#fff}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-badge{
  position:absolute;left:-18px;bottom:24px;background:#fff;border:1px solid var(--border-soft);
  border-radius:var(--r-card);padding:12px 16px;box-shadow:var(--shadow-lg);display:flex;gap:10px;align-items:center;
}
.hero-badge .ico{width:34px;height:34px;border-radius:9px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.hero-badge strong{display:block;font-size:14px;color:var(--text);line-height:1.4}
.hero-badge span{font-size:12px;color:var(--text-3);line-height:1.4}

/* ---------- covers ---------- */
.cover-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:24px}
.cover-card{
  position:relative;display:block;background:#fff;border:1px solid var(--border-soft);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.cover-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:#D7E3EC}
.cover-card .thumb{overflow:hidden;background:var(--primary-light)}
.cover-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease}
.cover-card:hover .thumb img{transform:scale(1.02)}
.cover-card .body{padding:18px 20px 20px}
.cover-card h3{font-size:17px;line-height:1.5;font-weight:600;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cover-card p{margin-top:8px;font-size:14px;line-height:1.65;color:var(--text-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cover-card.is-lead .thumb img{aspect-ratio:16/9}
.cover-card.is-lead .body{padding:22px 24px 24px}
.cover-card.is-lead h3{font-size:20px}
.cover-card.is-lead p{font-size:15px;color:var(--text-2)}
.cover-meta{display:flex;align-items:center;gap:10px;margin-top:14px;padding-top:14px;border-top:1px solid var(--border-soft);font-size:13px;color:var(--text-3)}

/* ---------- catalog ---------- */
.catalog{background:#fff;border-top:1px solid var(--border-soft);border-bottom:1px solid var(--border-soft)}
.catalog-list{border-top:1px solid var(--border-soft)}
.catalog-row{
  display:grid;grid-template-columns:64px minmax(0,1fr) 120px 40px;align-items:center;gap:24px;
  padding:22px 8px;border-bottom:1px solid var(--border-soft);
  transition:background .16s ease,padding .16s ease;
}
.catalog-row:hover{background:#F7FAFC}
.catalog-num{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--text-3);font-variant-numeric:tabular-nums}
.catalog-main h3{font-size:18px;font-weight:600;color:var(--text);line-height:1.5}
.catalog-main p{margin-top:6px;font-size:14px;color:var(--text-3);line-height:1.65}
.catalog-count{font-size:13px;color:var(--text-3);text-align:right}
.catalog-arrow{justify-self:end;color:var(--text-3);transition:color .16s ease,transform .16s ease}
.catalog-row:hover .catalog-arrow{color:var(--primary);transform:translateX(3px)}

/* ---------- featured ---------- */
.card-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border-soft);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:#D7E3EC}
.post-card .thumb{overflow:hidden;background:var(--primary-light)}
.post-card .thumb img{width:100%;aspect-ratio:8/4;object-fit:cover;transition:transform .3s ease}
.post-card:hover .thumb img{transform:scale(1.02)}
.post-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.badge{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:var(--r-badge);
  background:var(--primary-light);color:var(--primary);
  font-size:12px;font-weight:600;letter-spacing:.04em;line-height:1.5;
}
.badge.green{background:var(--green-light);color:var(--green)}
.post-card h3{margin-top:12px;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 p{margin-top:10px;font-size:14px;line-height:1.7;color:var(--text-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3)}
.card-foot .go{color:var(--primary);font-weight:600;transition:transform .16s ease}
.post-card:hover .card-foot .go{transform:translateX(2px)}

/* ---------- news (cms) ---------- */
.news-section{background:#fff;border-top:1px solid var(--border-soft);border-bottom:1px solid var(--border-soft)}
.news-card{
  display:flex;flex-direction:column;background:var(--bg);border:1px solid var(--border-soft);
  border-radius:var(--r-card);padding:22px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,background .18s ease;
}
.news-card:hover{transform:translateY(-2px);background:#fff;border-color:#D7E3EC;box-shadow:var(--shadow-lg)}
.news-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.news-time{font-size:14px;color:var(--text-3);font-variant-numeric:tabular-nums}
.news-card h3{margin-top:14px;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}
.news-card p{margin-top:10px;font-size:14px;line-height:1.7;color:var(--text-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .read{margin-top:16px;font-size:13px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.news-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:64px 24px;background:var(--bg);border:1px dashed var(--border);border-radius:var(--r-card);text-align:center;
}
.news-empty svg{width:48px;height:48px;color:var(--text-3)}
.news-empty p{font-size:15px;color:var(--text-2)}

/* ---------- recommend ---------- */
.rec-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0 32px}
.rec-item{
  display:flex;flex-direction:column;gap:8px;min-height:64px;padding:18px 0;
  border-bottom:1px solid #EFF3F7;transition:background .16s ease;
}
.rec-item:hover{background:#F7FAFC}
.rec-item h3{font-size:15px;line-height:1.6;font-weight:600;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .16s ease}
.rec-item:hover h3{color:var(--primary)}
.rec-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}

/* ---------- cta ---------- */
.cta-band{background:var(--primary-light);border-radius:18px;padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:24px;line-height:1.4;font-weight:700;color:var(--primary-dark)}
.cta-band p{margin-top:8px;font-size:15px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px}
.faq-item{background:#fff;border:1px solid var(--border-soft);border-radius:12px;margin-bottom:14px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease}
.faq-item.open{border-color:#CFDFEB;box-shadow:var(--shadow-sm);border-left:3px solid var(--primary)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--text);line-height:1.6}
.faq-q:hover{color:var(--primary)}
.faq-sign{position:relative;width:16px;height:16px;flex-shrink:0;color:var(--primary)}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.faq-sign::before{left:0;top:7px;width:16px;height:2px}
.faq-sign::after{left:7px;top:0;width:2px;height:16px}
.faq-item.open .faq-sign::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.75;color:var(--text-2)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#A9BCCB;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand .brand-name{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:#A9BCCB;max-width:300px}
.footer-keys{margin-top:14px;font-size:13px;color:#7F97A9;letter-spacing:.02em}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col a,.footer-col span{display:block;font-size:14px;line-height:1.9;color:#A9BCCB;transition:color .16s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8AA0B1}
.footer-bottom a{color:#8AA0B1}
.footer-bottom a:hover{color:#fff}
.footer-links{display:flex;gap:20px;flex-wrap:wrap}

@media (max-width:1279px){
  .container{padding:0 32px}
  .cover-grid{grid-template-columns:1fr 1fr;gap:20px}
  .cover-card.is-lead{grid-column:1 / -1}
  .cover-card.is-lead .thumb img{aspect-ratio:21/9}
  .rec-list{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .main-nav,.header-actions .search-box,.header-actions .link-btn{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions{margin-left:auto;gap:10px}
  .hero{padding:40px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-copy{max-width:none}
  .hero h1{font-size:32px;line-height:1.3}
  .hero-visual{order:2}
  .hero-visual img{aspect-ratio:16/9}
  .hero-badge{left:auto;right:16px;bottom:-18px}
  .section{padding:56px 0}
  .section-title{font-size:26px}
  .card-grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .catalog-row{grid-template-columns:48px minmax(0,1fr) 40px;gap:16px}
  .catalog-count{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{padding:28px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .header-inner{height:60px}
  .brand-name{font-size:17px}
  .hero h1{font-size:28px;line-height:1.34}
  .hero-sub{font-size:16px}
  .hero-stats{margin-top:26px}
  .hero-stats li{padding:0 18px}
  .hero-stats li:nth-child(3){padding-left:0;border-left:0;margin-top:12px}
  .stat-num{font-size:20px}
  .section{padding:44px 0}
  .section-title{font-size:23px}
  .section-sub{padding-left:0;font-size:14px}
  .cover-grid{grid-template-columns:1fr;gap:16px}
  .card-grid-3{grid-template-columns:1fr;gap:16px}
  .rec-list{grid-template-columns:1fr;gap:0}
  .catalog-row{grid-template-columns:36px minmax(0,1fr) 24px;padding:18px 4px}
  .catalog-main h3{font-size:16px}
  .cta-band{padding:24px 20px;border-radius:14px}
  .cta-band h2{font-size:20px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding:44px 0 0}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .faq-q{font-size:15px;padding:16px 18px}
  .faq-a p{padding:0 18px 18px;font-size:14px}
}
@media (max-width:519px){
  .hero h1{font-size:25px}
  .hero-actions .btn{width:100%}
  .hero-badge{position:static;margin-top:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* roulang page: category1 */
:root{
  --primary:#1E5B8C;
  --primary-dark:#17496F;
  --primary-soft:#E8F1F7;
  --teal:#2C8A72;
  --teal-soft:#E6F3EF;
  --accent:#E07B39;
  --accent-dark:#C96A2C;
  --bg:#F4F7FA;
  --card:#FFFFFF;
  --footer-bg:#12283A;
  --line:#E1E8EF;
  --line-2:#E7EDF3;
  --line-soft:#EFF3F7;
  --text:#12202E;
  --text-2:#43586C;
  --text-3:#7C8FA0;
  --invert:#F2F6F9;
  --shadow-sm:0 1px 2px rgba(18,40,62,.05),0 8px 24px rgba(18,40,62,.06);
  --shadow-lg:0 12px 28px rgba(18,40,62,.10);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-badge:6px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;padding:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
input{font:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
::selection{background:var(--primary-soft);color:var(--primary-dark)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 48px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line-2);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(18,40,62,.08)}
.header-inner{display:flex;align-items:center;gap:32px;height:68px}
.brand{display:inline-flex;align-items:center;gap:9px;flex:none}
.brand-mark{width:24px;height:24px;flex:none}
.brand-name{font-size:18px;font-weight:700;color:var(--primary-dark);letter-spacing:.01em}
.main-nav{display:flex;align-items:stretch;gap:28px;height:68px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:color .18s ease;
}
.nav-link:hover{color:var(--primary)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--primary);border-radius:2px;
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-search{position:relative}
.nav-search svg{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  width:15px;height:15px;stroke:var(--text-3);fill:none;stroke-width:2;
  pointer-events:none;
}
.nav-search input{
  width:220px;height:38px;padding:0 12px 0 34px;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--bg);color:var(--text);font-size:14px;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{
  outline:none;background:#fff;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(30,91,140,.08);
}
.nav-text-link{font-size:14px;color:var(--text-2);transition:color .18s ease;white-space:nowrap}
.nav-text-link:hover{color:var(--primary)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease,transform .16s ease;
}
.btn:active{transform:translateY(0);filter:brightness(.96)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 8px 18px rgba(23,73,111,.22)}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--line)}
.btn-outline:hover{border-color:var(--primary);background:var(--primary-soft);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 8px 18px rgba(224,123,57,.24)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-lg{height:48px;padding:0 26px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- badge ---------- */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:var(--primary-soft);color:var(--primary);
}
.badge-teal{background:var(--teal-soft);color:var(--teal)}

/* ---------- mobile nav ---------- */
.nav-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;
}
.nav-toggle svg{width:18px;height:18px;stroke:var(--primary-dark);stroke-width:2;fill:none;stroke-linecap:round}
.drawer{position:fixed;inset:0;z-index:90;visibility:hidden}
.drawer.open{visibility:visible}
.drawer-mask{
  position:absolute;inset:0;background:rgba(18,32,46,.45);
  opacity:0;transition:opacity .2s ease;
}
.drawer.open .drawer-mask{opacity:1}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:82vw;max-width:360px;
  background:#fff;transform:translateX(100%);
  transition:transform .24s cubic-bezier(.22,.61,.36,1);
  display:flex;flex-direction:column;padding:20px;gap:8px;
  box-shadow:-8px 0 32px rgba(18,40,62,.18);
}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.drawer-close{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);
}
.drawer-close svg{width:16px;height:16px;stroke:var(--text-2);stroke-width:2;fill:none;stroke-linecap:round}
.drawer-search{position:relative;margin:6px 0 10px}
.drawer-search input{
  width:100%;height:44px;padding:0 12px 0 36px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--bg);font-size:15px;color:var(--text);
}
.drawer-search input::placeholder{color:var(--text-3)}
.drawer-search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:15px;height:15px;stroke:var(--text-3);fill:none;stroke-width:2}
.drawer-panel .nav-link{
  height:48px;font-size:16px;border-bottom:1px solid var(--line-soft);
}
.drawer-panel .nav-link.active{color:var(--primary);font-weight:600}
.drawer-panel .nav-link.active::after{display:none}
.drawer-cta{margin-top:auto;width:100%}

/* ---------- page hero ---------- */
.page-hero{
  padding:44px 0 46px;
  background:
    linear-gradient(180deg,rgba(255,255,255,.95) 0%,rgba(244,247,250,.97) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line-2);
}
.breadcrumb{margin-bottom:20px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:#B7C5D1}
.breadcrumb a{color:var(--text-2);transition:color .16s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb [aria-current]{color:var(--text-2);font-weight:600}
.hero-row{display:flex;align-items:flex-end;justify-content:space-between;gap:48px}
.page-title{
  font-size:40px;line-height:1.2;font-weight:700;letter-spacing:-.01em;color:var(--text);
}
.page-lead{margin-top:14px;max-width:660px;font-size:17px;line-height:1.78;color:var(--text-2)}
.stats{display:flex;flex:none;align-items:stretch;background:#fff;border:1px solid var(--line-2);border-radius:var(--r-card);box-shadow:var(--shadow-sm);padding:14px 4px}
.stat{padding:0 22px;text-align:center}
.stat+.stat{border-left:1px solid var(--line-soft)}
.stat-num{font-size:24px;font-weight:700;line-height:1.25;color:var(--primary)}
.stat-label{margin-top:2px;font-size:13px;color:var(--text-3);white-space:nowrap}

/* ---------- layout ---------- */
.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 240px;
  gap:48px;padding-top:48px;padding-bottom:72px;
}
.section{margin-bottom:56px}
.section:last-child{margin-bottom:0}
.section-head{margin-bottom:24px}
.section-head h2{
  position:relative;padding-left:14px;
  font-size:26px;line-height:1.35;font-weight:700;color:var(--text);
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:2px;background:var(--primary);
}
.section-head p{margin-top:8px;padding-left:14px;font-size:15px;color:var(--text-3)}

/* ---------- cover cards ---------- */
.cover-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.cover-card{
  background:var(--card);border:1px solid var(--line-2);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.cover-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:#D7E3EC}
.cover-media{aspect-ratio:16/9;overflow:hidden;background:var(--primary-soft)}
.cover-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.cover-card:hover .cover-media img{transform:scale(1.02)}
.cover-body{padding:20px 22px 24px}
.cover-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
.cover-index{font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--teal)}
.cover-body h3{font-size:20px;line-height:1.42;font-weight:700;color:var(--text)}
.check-list{margin-top:14px}
.check-list li{
  position:relative;padding-left:20px;margin-bottom:8px;
  font-size:15px;line-height:1.72;color:var(--text-2);
}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:6px;height:6px;border-radius:2px;background:var(--teal);
}

/* ---------- entry list ---------- */
.entry-list{display:flex;flex-direction:column;gap:16px}
.entry{
  display:grid;grid-template-columns:200px minmax(0,1fr);gap:20px;
  padding:16px;background:var(--card);border:1px solid var(--line-2);
  border-radius:var(--r-card);box-shadow:var(--shadow-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.entry:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:#D7E3EC}
.entry-thumb{width:200px;height:130px;border-radius:var(--r-img);overflow:hidden;background:var(--primary-soft)}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.entry:hover .entry-thumb img{transform:scale(1.03)}
.entry-body{display:flex;flex-direction:column;justify-content:center;min-width:0}
.entry-body h3{font-size:18px;line-height:1.5;font-weight:600;color:var(--text);margin-top:8px}
.entry:hover .entry-body h3{color:var(--primary-dark)}
.entry-body p{
  margin-top:6px;font-size:15px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-meta{display:flex;align-items:center;gap:12px;margin-top:12px;font-size:13px;color:var(--text-3)}
.entry-meta .dot{width:3px;height:3px;border-radius:50%;background:#C4D1DC}

/* ---------- key points ---------- */
.key-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.key-block h3{font-size:18px;line-height:1.5;font-weight:700;color:var(--text);margin-bottom:10px}
.key-block p{font-size:15px;line-height:1.8;color:var(--text-2)}
.key-block p+p{margin-top:10px}
.key-rule{width:44px;height:3px;border-radius:2px;background:var(--teal);margin-bottom:14px}

/* ---------- faq ---------- */
.faq{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--card);border:1px solid var(--line-2);border-radius:12px;
  overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:#D7E3EC}
.faq-item.open{border-left:3px solid var(--primary);box-shadow:var(--shadow-sm)}
.faq-q{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  width:100%;padding:18px 22px;text-align:left;
  font-size:16px;font-weight:600;line-height:1.6;color:var(--text);
  transition:color .16s ease;
}
.faq-q:hover{color:var(--primary-dark)}
.faq-icon{position:relative;flex:none;width:16px;height:16px;margin-top:4px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);
  border-radius:1px;transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{width:12px;height:2px;transform:translate(-50%,-50%)}
.faq-icon::after{width:2px;height:12px;transform:translate(-50%,-50%)}
.faq-item.open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.78;color:var(--text-2)}

/* ---------- cta band ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:30px 32px;background:var(--primary-soft);
  border:1px solid #D5E4EF;border-radius:var(--r-card);
}
.cta-band h2{font-size:22px;line-height:1.4;font-weight:700;color:var(--primary-dark)}
.cta-band p{margin-top:8px;font-size:15px;line-height:1.72;color:var(--text-2);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:none}

/* ---------- toc ---------- */
.toc{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line-2);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-sm);
}
.toc h2{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--text-3);margin-bottom:12px}
.toc a{
  display:block;padding:9px 0 9px 12px;margin-bottom:2px;
  font-size:14px;line-height:1.5;color:var(--text-2);
  border-left:2px solid transparent;
  transition:color .16s ease,border-color .16s ease,background .16s ease;
}
.toc a:hover{color:var(--primary);border-left-color:#B9D3E6;background:#F7FAFC}
.toc a.active{color:var(--primary);font-weight:600;border-left-color:var(--primary);background:var(--primary-soft)}
.toc-note{margin-top:14px;padding-top:14px;border-top:1px solid var(--line-soft);font-size:13px;line-height:1.7;color:var(--text-3)}

/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg);color:#A9BCCB}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:32px;
  padding:56px 0 40px;
}
.footer-brand .brand{margin-bottom:0}
.footer-brand .brand-name{color:#fff}
.footer-brand p{margin-top:14px;max-width:360px;font-size:14px;line-height:1.85;color:#A9BCCB}
.footer-brand .footer-keys{margin-top:12px;font-size:13px;color:#7F96A9;letter-spacing:.02em}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:#A9BCCB;transition:color .16s ease}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-col span{display:block;padding:4px 0;font-size:14px;line-height:1.7;color:#A9BCCB;word-break:break-word}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#8FA6B8;
}
.footer-links{display:flex;gap:22px}
.footer-links a{transition:color .16s ease}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 32px}
  .stats{padding:12px 0}
  .stat{padding:0 16px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-search{display:none}
  .nav-text-link{display:none}
  .nav-toggle{display:inline-flex}
  .layout{grid-template-columns:minmax(0,1fr);gap:0}
  .toc{display:none}
  .hero-row{flex-direction:column;align-items:flex-start;gap:24px}
  .page-title{font-size:34px}
  .stats{width:100%;justify-content:space-between}
  .stat{flex:1;padding:0 10px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .header-inner{height:60px;gap:16px}
  .main-nav{height:60px}
  .page-hero{padding:32px 0 34px}
  .page-title{font-size:28px;line-height:1.3}
  .page-lead{font-size:16px;line-height:1.75}
  .layout{padding-top:32px;padding-bottom:56px}
  .cover-grid{grid-template-columns:1fr}
  .section{margin-bottom:44px}
  .section-head h2{font-size:22px}
  .entry{grid-template-columns:1fr;gap:14px}
  .entry-thumb{width:100%;height:auto;aspect-ratio:16/9}
  .key-grid{grid-template-columns:1fr;gap:28px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:519px){
  .stats{flex-direction:column;gap:0;padding:6px 0}
  .stat{display:flex;align-items:baseline;justify-content:space-between;padding:10px 18px;text-align:left}
  .stat+.stat{border-left:0;border-top:1px solid var(--line-soft)}
  .stat-num{font-size:20px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a-inner{padding:0 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
}

/* roulang page: article */
:root{
  --brand:#1E5B8C;
  --brand-dark:#17496F;
  --brand-light:#E8F1F7;
  --bamboo:#2C8A72;
  --bamboo-light:#E6F3EF;
  --accent:#E07B39;
  --accent-dark:#C96A2C;
  --bg:#F4F7FA;
  --card:#FFFFFF;
  --dark:#12283A;
  --line:#E1E8EF;
  --line-soft:#E7EDF3;
  --text:#12202E;
  --text-2:#43586C;
  --text-3:#7C8FA0;
  --white-2:#F2F6F9;
  --shadow-sm:0 1px 2px rgba(18,40,62,.05),0 8px 24px rgba(18,40,62,.06);
  --shadow-md:0 12px 28px rgba(18,40,62,.10);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-badge:6px;
  --container:1200px;
  --ease:160ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:600}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::selection{background:var(--brand-light);color:var(--brand-dark)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 48px}
.skip-link{position:absolute;left:-9999px;top:0;z-index:300;background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;font-size:14px}
.skip-link:focus{left:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .2s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(18,40,62,.08)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:26px;height:26px;display:block}
.brand-name{font-size:18px;font-weight:700;color:var(--brand-dark);letter-spacing:.01em}
.main-nav{display:flex;align-items:center;justify-content:center;gap:28px;flex:1 1 auto}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--text-2);transition:color var(--ease)}
.nav-link:hover{color:var(--brand)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--brand)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search-box{position:relative;display:flex;align-items:center}
.search-box svg{position:absolute;left:12px;width:16px;height:16px;color:var(--text-3);pointer-events:none}
.search-box input{
  width:220px;height:38px;border:1px solid var(--line);border-radius:10px;
  background:var(--bg);padding:0 12px 0 36px;font-size:14px;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.search-box input::placeholder{color:var(--text-3)}
.search-box input:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 3px rgba(30,91,140,.10);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn:active{transform:translateY(0);filter:brightness(.96)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--brand)}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-light);color:var(--brand-dark)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 8px 20px rgba(224,123,57,.24)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn-text{font-size:14px;color:var(--text-2);transition:color var(--ease);padding:4px 2px}
.btn-text:hover{color:var(--brand)}
.menu-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  background:#fff;align-items:center;justify-content:center;color:var(--brand-dark);
  transition:border-color var(--ease),background var(--ease);
}
.menu-toggle:hover{border-color:var(--brand);background:var(--brand-light)}
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(18,40,62,.42);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:80;width:82vw;max-width:340px;
  background:#fff;transform:translateX(100%);transition:transform .24s ease;
  display:flex;flex-direction:column;gap:14px;padding:20px;overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);border-radius:10px;display:inline-flex;align-items:center;justify-content:center;color:var(--text-2)}
.drawer-search{position:relative;display:flex;align-items:center;margin-top:4px}
.drawer-search svg{position:absolute;left:12px;width:16px;height:16px;color:var(--text-3)}
.drawer-search input{width:100%;height:44px;border:1px solid var(--line);border-radius:10px;background:var(--bg);padding:0 12px 0 38px;font-size:14px}
.drawer-search input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(30,91,140,.10)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{display:block;height:48px;line-height:48px;font-size:16px;color:var(--text);border-bottom:1px solid var(--line-soft)}
.drawer-nav a:hover{color:var(--brand)}
.drawer-foot{margin-top:auto;padding-top:16px}

/* ---------- article hero ---------- */
.article-hero{background:#fff;border-bottom:1px solid var(--line-soft);padding:32px 0 34px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb li{list-style:none;display:inline-flex;align-items:center}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:#C6D3DE}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb li[aria-current]{color:var(--text-2)}
.article-title{max-width:860px;margin:18px 0 16px;font-size:38px;line-height:1.35;font-weight:700;color:var(--text);letter-spacing:-.01em}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--text-3)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C6D3DE;display:inline-block}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-badge);
  background:var(--brand-light);color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.04em;
}
.badge-bamboo{background:var(--bamboo-light);color:var(--bamboo)}

/* ---------- layout ---------- */
.article-main{padding:44px 0 72px}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:38px;align-items:start}
.article-card{background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);padding:36px 40px;box-shadow:var(--shadow-sm)}

/* ---------- article body ---------- */
.article-body{font-size:16px;line-height:1.85;color:var(--text-2);word-break:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 18px}
.article-body h2{
  position:relative;margin:42px 0 16px;padding-left:14px;
  font-size:24px;line-height:1.45;font-weight:600;color:var(--text);scroll-margin-top:96px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.42em;width:3px;height:20px;border-radius:2px;background:var(--brand)}
.article-body h3{margin:30px 0 12px;font-size:19px;line-height:1.5;font-weight:600;color:var(--text);scroll-margin-top:96px}
.article-body h4{margin:22px 0 10px;font-size:17px;line-height:1.5;font-weight:600;color:var(--text)}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(30,91,140,.3)}
.article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;line-height:1.8}
.article-body ul li,.article-body ol li{margin-bottom:8px}
.article-body ul li::marker{color:var(--brand)}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  border-left:3px solid var(--brand);border-radius:0 10px 10px 0;
  background:#F7FAFC;color:var(--text-2);font-size:15px;line-height:1.8;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:24px 0;box-shadow:var(--shadow-sm)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);margin-top:10px;text-align:center}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--bg);color:var(--text);font-weight:600}
.article-body code{background:var(--brand-light);color:var(--brand-dark);padding:2px 6px;border-radius:5px;font-size:14px}
.article-body hr{border:0;border-top:1px solid var(--line-soft);margin:32px 0}

/* ---------- article footer parts ---------- */
.article-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line-soft)}
.tag-label{font-size:13px;color:var(--text-3);font-weight:600;letter-spacing:.04em}
.article-share{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:22px}
.article-share .share-note{font-size:14px;color:var(--text-3)}
.empty-state{text-align:center;padding:56px 20px}
.empty-state svg{width:48px;height:48px;color:var(--text-3);margin:0 auto 18px}
.empty-state h2{font-size:20px;color:var(--text);margin-bottom:18px}
.empty-state .btn{margin-top:4px}

/* ---------- sidebar ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-sm)}
.side-title{display:flex;align-items:center;gap:8px;margin:0 0 14px;font-size:15px;font-weight:600;color:var(--text)}
.side-title::before{content:"";width:3px;height:16px;border-radius:2px;background:var(--brand)}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list li{list-style:none}
.toc-list a{
  display:block;padding:8px 10px 8px 12px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  font-size:14px;line-height:1.6;color:var(--text-2);
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.toc-list a:hover{background:var(--bg);color:var(--brand)}
.toc-list a.active{background:var(--brand-light);border-left-color:var(--brand);color:var(--brand);font-weight:600}
.side-links li{list-style:none}
.side-links li+li{border-top:1px solid #EFF3F7}
.side-links a{display:block;padding:12px 0;transition:color var(--ease)}
.side-links a span{display:block;font-size:14px;font-weight:600;color:var(--text);transition:color var(--ease)}
.side-links a small{display:block;margin-top:2px;font-size:13px;color:var(--text-3);line-height:1.6}
.side-links a:hover span{color:var(--brand)}
.side-cta{background:var(--brand-light);border-color:#D6E6F0}
.side-cta p{font-size:14px;line-height:1.75;color:var(--text-2);margin-bottom:14px}
.side-cta .btn.is-saved{background:var(--bamboo)}
.side-cta .btn.is-saved:hover{background:#24745F}

/* ---------- related ---------- */
.section{padding:64px 0}
.related{background:var(--bg);border-top:1px solid var(--line-soft)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
.section-head h2{
  position:relative;padding-left:14px;font-size:28px;line-height:1.4;font-weight:600;color:var(--text);
}
.section-head h2::before{content:"";position:absolute;left:0;top:.4em;width:3px;height:20px;border-radius:2px;background:var(--brand)}
.section-head p{font-size:15px;color:var(--text-2);max-width:560px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rec-card{
  display:flex;flex-direction:column;overflow:hidden;background:#fff;
  border:1px solid var(--line-soft);border-radius:var(--r-card);box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:#D7E3EC}
.rec-thumb{aspect-ratio:8/4;overflow:hidden;background:var(--brand-light)}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.rec-card:hover .rec-thumb img{transform:scale(1.02)}
.rec-body{display:flex;flex-direction:column;flex:1 1 auto;padding:18px 20px 20px}
.rec-body h3{font-size:17px;line-height:1.5;color:var(--text);margin-bottom:8px}
.rec-body p{
  font-size:14px;line-height:1.7;color:var(--text-2);margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rec-meta{display:flex;align-items:center;gap:10px;margin-top:auto;font-size:13px;color:var(--text-3)}
.back-link{display:inline-flex;align-items:center;gap:6px;margin-top:30px;font-size:14px;font-weight:600;color:var(--brand);transition:color var(--ease)}
.back-link:hover{color:var(--brand-dark)}
.back-link svg{width:15px;height:15px;transition:transform var(--ease)}
.back-link:hover svg{transform:translateX(-3px)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#A9BCCB;padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:32px;padding-bottom:40px}
.footer-brand .brand{margin-bottom:0}
.footer-brand .brand-name{color:#FFFFFF}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:#A9BCCB}
.footer-brand .footer-keys{font-size:13px;color:#7E97A9}
.footer-col h3{margin:0 0 14px;font-size:14px;font-weight:600;color:#FFFFFF}
.footer-col a,.footer-col span{display:block;margin-bottom:10px;font-size:14px;color:#A9BCCB;transition:color var(--ease)}
.footer-col a:hover{color:#FFFFFF}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#8FA6B7;
}
.footer-links{display:flex;gap:18px}
.footer-links a{color:#8FA6B7;transition:color var(--ease)}
.footer-links a:hover{color:#FFFFFF}

/* ---------- toast ---------- */
.toast{
  position:fixed;left:24px;bottom:24px;z-index:200;
  padding:12px 18px;border-radius:10px;background:rgba(18,40,62,.95);color:#fff;
  font-size:14px;box-shadow:var(--shadow-md);
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .22s ease,transform .22s ease;
}
.toast.show{opacity:1;transform:translateY(0)}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 36px}
  .search-box input{width:180px}
}
@media (max-width:1024px){
  .container{padding:0 32px}
  .layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap}
  .sidebar .side-card{flex:1 1 280px}
  .article-title{font-size:32px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:900px){
  .main-nav{display:none}
  .search-box{display:none}
  .header-actions .btn-text{display:none}
  .menu-toggle{display:inline-flex}
  .header-inner{height:60px;gap:14px}
  .brand-name{font-size:17px}
}
@media (max-width:767px){
  .article-hero{padding:24px 0 26px}
  .article-title{font-size:28px;line-height:1.4;margin:14px 0 12px}
  .article-card{padding:24px 20px}
  .article-body h2{font-size:21px;margin-top:34px}
  .article-body h3{font-size:18px}
  .article-main{padding:32px 0 52px}
  .section{padding:48px 0}
  .section-head h2{font-size:24px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .sidebar{flex-direction:column}
  .sidebar .side-card{flex:1 1 auto;width:100%}
}
@media (max-width:576px){
  .container{padding:0 20px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .header-actions .btn-accent{padding:0 12px;font-size:13px}
  .toast{left:16px;right:16px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category2 */
:root{
  --brand:#1E5B8C;
  --brand-dark:#17496F;
  --brand-light:#E8F1F7;
  --bamboo:#2C8A72;
  --bamboo-light:#E6F3EF;
  --accent:#E07B39;
  --accent-dark:#C96A2C;
  --bg:#F4F7FA;
  --card:#FFFFFF;
  --dark:#12283A;
  --line:#E1E8EF;
  --line-soft:#E7EDF3;
  --line-row:#EFF3F7;
  --text:#12202E;
  --text-2:#43586C;
  --text-3:#7C8FA0;
  --inverse:#F2F6F9;
  --footer-text:#A9BCCB;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-badge:6px;
  --shadow-sm:0 1px 2px rgba(18,40,62,.05),0 8px 24px rgba(18,40,62,.06);
  --shadow-lg:0 12px 28px rgba(18,40,62,.10);
  --container:1200px;
  --pad-x:48px;
  --section-y:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
svg{display:block;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad-x);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .22s ease, background .22s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(18,40,62,.07);background:rgba(255,255,255,.97);}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:68px;
}
.brand{display:flex;align-items:center;gap:9px;flex:0 0 auto;}
.brand-mark{width:24px;height:24px;}
.brand-name{
  font-size:18px;font-weight:700;color:var(--brand-dark);letter-spacing:.01em;
}
.main-nav{display:flex;align-items:center;gap:28px;flex:1 1 auto;}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;
  transition:color .16s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left center;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search .search-icon{
  position:absolute;left:11px;width:15px;height:15px;color:var(--text-3);pointer-events:none;
}
.nav-search input{
  width:220px;height:38px;
  padding:0 12px 0 33px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--bg);
  font-size:14px;color:var(--text);
  transition:border-color .16s ease, box-shadow .16s ease, background .16s ease;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{
  outline:none;background:#fff;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(30,91,140,.10);
}
.link-quiet{
  font-size:14px;font-weight:500;color:var(--text-2);
  transition:color .16s ease;white-space:nowrap;
}
.link-quiet:hover{color:var(--brand);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;
  font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--radius-btn);
  transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease,opacity .16s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(0);filter:brightness(.96);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-lg{height:48px;padding:0 24px;font-size:15px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(30,91,140,.16);}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(30,91,140,.22);}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-light);transform:translateY(-1px);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(224,123,57,.20);}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:#fff;color:var(--brand);
  align-items:center;justify-content:center;font-size:16px;
}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-light);}

/* ---------- 移动端抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,40,62,.38);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:140;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:340px;
  background:#fff;z-index:150;
  transform:translateX(100%);
  transition:transform .26s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;
  box-shadow:-12px 0 32px rgba(18,40,62,.14);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--line-soft);
}
.drawer-close{
  width:36px;height:36px;border-radius:var(--radius-btn);
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-2);
}
.drawer-close:hover{color:var(--brand);border-color:var(--brand);}
.drawer-search{padding:16px 20px 6px;}
.drawer-search input{
  width:100%;height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--bg);font-size:14px;
}
.drawer-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(30,91,140,.10);}
.drawer-nav{display:flex;flex-direction:column;padding:8px 0;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;padding:0 20px;font-size:15px;font-weight:500;color:var(--text-2);
  border-bottom:1px solid var(--line-row);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--brand);background:var(--brand-light);}
.drawer-cta{padding:20px;margin-top:auto;}
.drawer-cta .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:22px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li::after{content:"/";color:#C3CFDA;}
.breadcrumb li:last-child::after{content:none;}
.breadcrumb a{color:var(--text-3);transition:color .16s ease;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb li[aria-current] span{color:var(--text-2);font-weight:500;}

/* ---------- 通栏封面带 ---------- */
.page-banner{position:relative;overflow:hidden;margin-top:22px;border-radius:0 0 0 0;}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(255,255,255,.90) 0%,rgba(255,255,255,.78) 52%,rgba(255,255,255,.58) 100%);
}
.page-banner .banner-inner{
  position:relative;z-index:2;
  min-height:clamp(300px,29vw,420px);
  display:flex;flex-direction:column;justify-content:center;
  padding-top:44px;padding-bottom:44px;
  max-width:720px;
}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  align-self:flex-start;
  padding:5px 12px;margin-bottom:18px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--bamboo);background:var(--bamboo-light);
  border-radius:var(--radius-badge);
}
.banner-tag i{font-size:11px;}
.page-banner h1{
  font-size:40px;line-height:1.2;font-weight:700;color:var(--text);
  letter-spacing:.01em;
}
.page-banner .banner-lead{
  margin-top:16px;
  font-size:17px;line-height:1.8;color:var(--text-2);
  max-width:600px;
}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.banner-meta{
  display:flex;flex-wrap:wrap;gap:26px;margin-top:30px;
  padding-top:22px;border-top:1px solid rgba(30,91,140,.14);
}
.banner-meta div{display:flex;flex-direction:column;gap:2px;}
.banner-meta strong{font-size:22px;font-weight:700;color:var(--brand);line-height:1.3;font-family:Inter,ui-sans-serif,system-ui,sans-serif;}
.banner-meta span{font-size:13px;color:var(--text-3);}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-y) 0;}
.section-alt{background:#fff;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:34px;
}
.section-title-wrap{display:flex;gap:14px;}
.section-bar{
  flex:0 0 auto;width:3px;height:20px;margin-top:9px;
  background:var(--brand);border-radius:2px;
}
.section-head h2{
  font-size:30px;line-height:1.3;font-weight:600;color:var(--text);letter-spacing:.01em;
}
.section-head p{margin-top:8px;font-size:15px;line-height:1.7;color:var(--text-2);max-width:660px;}
.section-more{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;color:var(--brand);
  transition:gap .16s ease,color .16s ease;
}
.section-more:hover{gap:11px;color:var(--brand-dark);}

/* ---------- 三列功能卡片网格 ---------- */
.grid-3{
  display:grid;gap:24px;
  grid-template-columns:repeat(3,minmax(0,1fr));
}
.feat-card{
  position:relative;
  min-height:260px;
  display:flex;flex-direction:column;
  padding:24px;
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.feat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:#D7E3EC;}
.feat-num{
  font-family:Inter,ui-sans-serif,system-ui,sans-serif;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);
  background:var(--brand-light);
  align-self:flex-start;
  padding:3px 9px;border-radius:var(--radius-badge);
}
.feat-card h3{
  margin-top:16px;font-size:20px;line-height:1.45;font-weight:600;color:var(--text);
}
.feat-card p{
  margin-top:10px;font-size:15px;line-height:1.75;color:var(--text-2);
}
.feat-foot{
  margin-top:auto;padding-top:18px;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.chip{
  display:inline-flex;align-items:center;
  padding:4px 10px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  border-radius:var(--radius-badge);
  background:var(--brand-light);color:var(--brand);
}
.chip-bamboo{background:var(--bamboo-light);color:var(--bamboo);}

/* ---------- 时间线目录 ---------- */
.timeline-wrap{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:48px;align-items:start;}
.timeline{position:relative;padding-left:28px;}
.timeline::before{
  content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--brand-light),var(--line));
  border-radius:2px;
}
.timeline-item{position:relative;padding-bottom:30px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-item::before{
  content:"";position:absolute;left:-28px;top:8px;
  width:14px;height:14px;border-radius:50%;
  background:#fff;border:2px solid var(--brand);
  box-shadow:0 0 0 4px rgba(30,91,140,.07);
  transition:box-shadow .18s ease,background .18s ease;
}
.timeline-item:hover::before{background:var(--brand);box-shadow:0 0 0 5px rgba(30,91,140,.13);}
.timeline-item h3{
  font-size:17px;line-height:1.55;font-weight:600;color:var(--text);
  transition:color .16s ease;
}
.timeline-item:hover h3{color:var(--brand);}
.timeline-item p{margin-top:6px;font-size:14.5px;line-height:1.72;color:var(--text-2);}
.timeline-date{
  display:inline-block;margin-top:8px;
  font-family:Inter,ui-sans-serif,system-ui,sans-serif;
  font-size:13px;color:var(--text-3);letter-spacing:.02em;
}
.timeline-side{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line-soft);
  border-radius:var(--radius-card);padding:26px;
  box-shadow:var(--shadow-sm);
}
.timeline-side h3{font-size:17px;font-weight:600;color:var(--text);}
.timeline-side p{margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--text-2);}
.side-list{margin-top:18px;display:flex;flex-direction:column;}
.side-list li{border-top:1px solid var(--line-row);padding:12px 0;display:flex;gap:10px;align-items:flex-start;}
.side-list li:first-child{border-top:none;padding-top:6px;}
.side-list i{color:var(--bamboo);font-size:12px;margin-top:5px;}
.side-list span{font-size:14px;line-height:1.65;color:var(--text-2);}
.side-cta{margin-top:20px;}
.side-cta .btn{width:100%;}

/* ---------- 精选条目 ---------- */
.featured-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.featured-card{
  display:flex;gap:20px;align-items:stretch;
  padding:20px;
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.featured-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:#D7E3EC;}
.featured-thumb{
  flex:0 0 200px;width:200px;
  border-radius:var(--radius-img);overflow:hidden;
  background:var(--brand-light);
}
.featured-thumb img{width:100%;height:100%;object-fit:cover;aspect-ratio:200/130;transition:transform .3s ease;}
.featured-card:hover .featured-thumb img{transform:scale(1.03);}
.featured-body{display:flex;flex-direction:column;min-width:0;}
.featured-body h3{
  font-size:18px;line-height:1.5;font-weight:600;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .16s ease;
}
.featured-card:hover .featured-body h3{color:var(--brand);}
.featured-body p{
  margin-top:8px;font-size:14.5px;line-height:1.72;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.featured-foot{
  margin-top:auto;padding-top:14px;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--text-3);
}
.dot-sep{width:3px;height:3px;border-radius:50%;background:#C3CFDA;display:inline-block;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq-item{
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:12px;
  padding:18px 22px;
  box-shadow:0 1px 2px rgba(18,40,62,.04);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:#D7E3EC;border-left:3px solid var(--brand);box-shadow:var(--shadow-sm);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--text);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{content:"";}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;transition:transform .2s ease,background .2s ease,border-color .2s ease;
}
.faq-item[open] .faq-icon{background:var(--brand-light);border-color:var(--brand);transform:rotate(180deg);}
.faq-answer{padding-top:14px;font-size:15px;line-height:1.8;color:var(--text-2);}
.faq-item summary:hover{color:var(--brand);}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--brand-light);
  border:1px solid #D9E7F1;
  border-radius:18px;
  padding:38px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:26px;line-height:1.4;font-weight:600;color:var(--brand-dark);}
.cta-band p{margin-top:8px;font-size:15px;line-height:1.7;color:var(--text-2);max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--footer-text);padding:60px 0 0;margin-top:var(--section-y);}
.footer-grid{
  display:grid;gap:32px;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-name{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--footer-text);max-width:330px;}
.footer-keys{
  margin-top:14px;font-size:13px;color:#7E93A5;letter-spacing:.02em;
}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col a,.footer-col span{
  display:block;font-size:14px;line-height:1.9;color:var(--footer-text);
  margin-bottom:6px;transition:color .16s ease;
}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;font-size:13px;color:#7E93A5;
}
.footer-links{display:flex;gap:20px;}
.footer-links a{color:#7E93A5;transition:color .16s ease;}
.footer-links a:hover{color:#fff;}

/* ---------- 无障碍动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--pad-x:32px;--section-y:64px;}
  .page-banner h1{font-size:36px;}
  .timeline-wrap{grid-template-columns:minmax(0,1fr) 320px;gap:36px;}
  .nav-search input{width:180px;}
}
@media (max-width:1023px){
  :root{--pad-x:32px;--section-y:56px;}
  .main-nav{gap:22px;}
  .nav-search{display:none;}
  .link-quiet{display:none;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .featured-grid{grid-template-columns:minmax(0,1fr);}
  .timeline-wrap{grid-template-columns:minmax(0,1fr);}
  .timeline-side{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .page-banner h1{font-size:32px;}
  .section-head h2{font-size:26px;}
}
@media (max-width:860px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:60px;gap:16px;}
  .header-actions .btn-accent{display:none;}
}
@media (max-width:767px){
  :root{--pad-x:20px;--section-y:44px;}
  .brand-name{font-size:17px;}
  .breadcrumb{padding-top:16px;}
  .page-banner{margin-top:16px;}
  .page-banner .banner-inner{min-height:auto;padding-top:36px;padding-bottom:36px;}
  .page-banner h1{font-size:28px;line-height:1.28;}
  .page-banner .banner-lead{font-size:16px;line-height:1.75;}
  .banner-actions .btn{flex:1 1 auto;}
  .banner-meta{gap:18px 26px;}
  .grid-3{grid-template-columns:minmax(0,1fr);}
  .feat-card{min-height:auto;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .section-head h2{font-size:24px;}
  .featured-card{flex-direction:column;}
  .featured-thumb{flex:0 0 auto;width:100%;}
  .featured-thumb img{aspect-ratio:16/9;}
  .cta-band{padding:28px 22px;border-radius:14px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .site-footer{padding-top:44px;}
}
@media (max-width:520px){
  .banner-meta strong{font-size:20px;}
  .timeline{padding-left:24px;}
  .timeline-item::before{left:-24px;width:12px;height:12px;}
  .faq-item{padding:16px 18px;}
  .faq-item summary{font-size:15px;}
  .footer-links{gap:14px;}
}