/* roulang page: index */
:root{
  --primary:#1A56DB;
  --primary-dark:#0E3AA8;
  --footer-bg:#123A8C;
  --primary-06:rgba(26,86,219,.06);
  --primary-08:rgba(26,86,219,.08);
  --primary-10:rgba(26,86,219,.10);
  --primary-20:rgba(26,86,219,.20);
  --primary-40:rgba(26,86,219,.40);
  --teal:#0FB5A0;
  --teal-dark:#0A8A7A;
  --teal-12:rgba(15,181,160,.12);
  --amber:#F5A524;
  --amber-16:rgba(245,165,36,.16);
  --amber-dark:#7A4E00;
  --success:#1F9D55;
  --danger:#D64545;
  --bg:#F4F6FA;
  --card:#FFFFFF;
  --line:#E3E8F0;
  --title:#101C33;
  --text:#46536B;
  --muted:#7A8699;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,28,51,.04),0 8px 24px rgba(16,28,51,.06);
  --shadow-2:0 16px 40px rgba(16,28,51,.10);
  --shadow-3:0 20px 48px rgba(16,28,51,.14);
  --ease:cubic-bezier(.4,0,.2,1);
  --mono:ui-monospace,SFMono-Regular,"Roboto Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.1px;
  color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--primary-dark)}
h1,h2,h3,h4{color:var(--title);margin:0;font-weight:700;line-height:1.3;letter-spacing:-.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,textarea{font-family:inherit}
.grid-container{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:32px;padding-right:32px}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:30px}
.section-head .sub{margin-top:10px;color:var(--muted);font-size:15px;line-height:1.7}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:500;white-space:nowrap}
.link-more::after{content:"→";display:inline-block;transition:transform .2s var(--ease)}
.link-more:hover::after{transform:translateX(3px)}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:1px;color:var(--primary);background:var(--primary-08);border-radius:var(--radius-pill);padding:5px 14px;font-weight:500}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:500;line-height:1;transition:all .2s var(--ease);border:1px solid transparent;text-align:center}
.btn--primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(26,86,219,.20)}
.btn--primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:#fff;color:var(--primary);border-color:var(--primary-40)}
.btn--ghost:hover{background:var(--primary-08);color:var(--primary-dark);border-color:var(--primary)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--block{width:100%}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* 徽章 */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--radius-pill);font-size:12px;line-height:1;font-weight:500;letter-spacing:.2px}
.badge--cat{background:var(--primary-10);color:var(--primary)}
.badge--state{background:var(--teal-12);color:var(--teal-dark)}
.badge--limit{background:var(--amber-16);color:var(--amber-dark)}

/* 活动状态条 */
.status-bar{background:var(--primary-08);border-bottom:1px solid var(--line);height:36px;overflow:hidden}
.status-bar__inner{max-width:1200px;margin:0 auto;padding:0 32px;height:36px;display:flex;align-items:center;gap:14px}
.status-bar .badge{flex:none}
.status-marquee{flex:1 1 auto;min-width:0;overflow:hidden;white-space:nowrap;font-size:13px;color:var(--text)}
.status-marquee span{display:inline-block}
.status-count{flex:none;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.status-count .num{font-family:var(--mono);font-size:14px;font-weight:700;color:var(--amber-dark);letter-spacing:.5px}

/* 导航 */
.site-header{background:#fff;border-top:3px solid var(--primary);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:60}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:19px;position:relative;letter-spacing:0}
.brand-mark::after{content:"";position:absolute;right:5px;bottom:5px;width:5px;height:5px;border-radius:50%;background:var(--amber)}
.brand-name{font-size:19px;font-weight:700;color:var(--title);letter-spacing:-.2px}
.main-nav{display:flex;align-items:center;gap:6px}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:6px;padding:0 16px;height:72px;font-size:15px;font-weight:500;color:var(--text)}
.nav-link:hover{color:var(--primary)}
.nav-link.active{color:var(--primary);font-weight:700}
.nav-link.active::after{content:"";position:absolute;left:16px;right:16px;bottom:16px;height:2px;border-radius:2px;background:var(--primary)}
.nav-tag{font-size:11px;line-height:1;padding:3px 6px;border-radius:var(--radius-pill);background:var(--primary-10);color:var(--primary);font-weight:500}
.nav-tag--live{background:var(--teal-12);color:var(--teal-dark)}
.nav-right{display:flex;align-items:center;gap:12px;flex:none}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--title);border-radius:2px}

/* 移动抽屉 */
.mobile-drawer{position:fixed;inset:0;background:#fff;z-index:200;padding:24px 20px 40px;overflow-y:auto;display:none}
.mobile-drawer.is-open{display:block}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);font-size:20px;color:var(--title);line-height:1}
.drawer-nav{display:flex;flex-direction:column;margin:20px 0 28px}
.drawer-nav a{padding:16px 4px;font-size:19px;font-weight:600;color:var(--title);border-bottom:1px solid var(--line)}
.drawer-nav a.active{color:var(--primary)}
.drawer-foot{margin-top:28px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);line-height:1.9}

/* Hero */
.hero{padding:72px 0 88px;background:#fff;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-60px;right:-120px;width:520px;height:280px;background:var(--primary-06);border-radius:60px;transform:rotate(-2deg);pointer-events:none}
.hero-copy{position:relative;z-index:2}
.hero-title{font-size:44px;line-height:1.25;margin:18px 0 18px;font-weight:800}
.hero-sub{font-size:18px;line-height:1.8;color:var(--text);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:32px 0 28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-pill);padding:7px 14px}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block;flex:none}
.dot--teal{background:var(--teal)}
.dot--amber{background:var(--amber)}
.dot--primary{background:var(--primary)}
.hero-visual{position:relative;padding-bottom:40px;z-index:2}
.hero-cover{border-radius:16px;overflow:hidden;aspect-ratio:16/10;background:var(--primary-06);box-shadow:var(--shadow-2)}
.hero-cover img{width:100%;height:100%;object-fit:cover}
.hero-float{position:absolute;right:24px;bottom:-24px;background:#fff;border-radius:14px;box-shadow:var(--shadow-3);padding:16px 22px;display:flex;gap:28px;align-items:center}
.hero-float .stat{display:flex;flex-direction:column;gap:2px}
.hero-float .stat b{font-family:var(--mono);font-size:20px;color:var(--primary);line-height:1.2}
.hero-float .stat span{font-size:12px;color:var(--muted)}
.hero-float .update{font-size:12px;color:var(--muted);border-left:1px solid var(--line);padding-left:22px;line-height:1.6}

/* 合集目录 */
.collection{background:var(--bg)}
.toc{position:sticky;top:112px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:20px 0;box-shadow:var(--shadow-1)}
.toc h3{font-size:15px;padding:0 20px 14px;border-bottom:1px solid var(--line);margin-bottom:8px;color:var(--muted);font-weight:600;letter-spacing:.5px}
.toc a{display:block;position:relative;padding:12px 20px;font-size:15px;color:var(--text);border-left:3px solid transparent}
.toc a:hover{background:#F9FBFF;color:var(--primary)}
.toc a.active{color:var(--primary);font-weight:600;border-left-color:var(--primary);background:#F9FBFF}
.toc a .idx{font-family:var(--mono);font-size:12px;color:var(--muted);margin-right:8px}
.dir-card{display:flex;align-items:center;gap:20px;background:#fff;border:1px solid var(--line);border-left:3px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1);transition:all .22s var(--ease);height:100%}
.dir-card:hover{border-left-color:var(--primary);background:#F9FBFF;transform:translateY(-3px);box-shadow:var(--shadow-2)}
.dir-card .no{font-family:var(--mono);font-size:28px;font-weight:700;color:var(--primary);line-height:1;flex:none}
.dir-card .body{flex:1 1 auto;min-width:0}
.dir-card h3{font-size:19px;margin-bottom:8px}
.dir-card .desc{font-size:14px;color:var(--muted);line-height:1.7;-webkit-line-clamp:2;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}
.dir-card .meta{display:flex;align-items:center;gap:10px;margin-top:14px;flex-wrap:wrap}
.dir-card .arrow{flex:none;font-size:20px;color:var(--primary-40);transition:transform .2s var(--ease)}
.dir-card:hover .arrow{transform:translateX(4px);color:var(--primary)}
.dir-card--wide{padding:28px 28px}

/* 精选条目 */
.feature-list{background:#fff}
.feature-main{display:flex;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:all .22s var(--ease);height:100%}
.feature-main:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.feature-main .thumb{width:45%;flex:none;background:var(--primary-06)}
.feature-main .thumb img{width:100%;height:100%;object-fit:cover}
.feature-main .content{padding:28px;display:flex;flex-direction:column;gap:14px}
.feature-main h3{font-size:22px;line-height:1.45}
.feature-main p{font-size:15px;line-height:1.8;color:var(--text);-webkit-line-clamp:3;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}
.meta-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-top:auto}
.mini{display:flex;gap:16px;align-items:center;padding:14px;border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;transition:all .2s var(--ease)}
.mini:hover{border-color:var(--primary-20);background:#F9FBFF;transform:translateX(3px)}
.mini img{width:88px;height:88px;border-radius:var(--radius-img);object-fit:cover;flex:none;background:var(--primary-06)}
.mini .mini-body{min-width:0}
.mini h4{font-size:16px;line-height:1.5;margin-bottom:8px;-webkit-line-clamp:2;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}
.mini .mini-meta{font-size:12px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap}

/* 最新信息 */
.news-list{display:block}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:all .22s var(--ease);height:100%;color:var(--text)}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);color:var(--text)}
.news-card__media{aspect-ratio:16/9;background:var(--primary-06);overflow:hidden}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-card__media img{transform:scale(1.04)}
.news-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.news-card__title{font-size:17px;line-height:1.55;transition:color .2s var(--ease);-webkit-line-clamp:2;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-card__title{color:var(--primary)}
.news-card__desc{font-size:14px;color:var(--muted);line-height:1.7;-webkit-line-clamp:2;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}
.news-card__meta{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);margin-top:auto;padding-top:6px}
.news-card__meta svg{width:14px;height:14px;flex:none;stroke:var(--muted)}
.news-empty{background:var(--bg);border:1px dashed var(--line);border-radius:var(--radius-card);padding:56px 24px;text-align:center}
.news-empty svg{width:40px;height:40px;stroke:var(--primary-40);margin:0 auto 16px}
.news-empty p{color:var(--muted);font-size:15px;margin-bottom:18px}

/* 相关推荐轨 */
.rail-wrap{position:relative}
.rail{display:flex;gap:20px;overflow-x:auto;padding:6px 2px 18px;scroll-snap-type:x mandatory;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.rail-card{flex:0 0 280px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:all .22s var(--ease);color:var(--text)}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);color:var(--text)}
.rail-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--primary-06)}
.rail-card .rc-body{padding:18px}
.rail-card h4{font-size:16px;line-height:1.55;margin:10px 0 8px;-webkit-line-clamp:2;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}
.rail-card .rc-meta{font-size:12px;color:var(--muted)}
.rail-nav{position:absolute;right:0;top:-72px;display:flex;gap:10px}
.rail-btn{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--title);font-size:16px;display:flex;align-items:center;justify-content:center;transition:all .2s var(--ease)}
.rail-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-08)}

/* CTA 带 */
.cta-band{background:var(--primary-08);border:1px solid var(--primary-20);border-radius:16px;padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:26px;margin-bottom:8px}
.cta-band .cta-note{font-size:15px;color:var(--text)}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.share-field{display:flex;align-items:center;height:48px;padding:0 16px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;font-family:var(--mono);font-size:13px;color:var(--muted);min-width:240px}
.toast{position:fixed;left:50%;bottom:40px;transform:translate(-50%,20px);background:var(--title);color:#fff;font-size:14px;padding:12px 22px;border-radius:var(--radius-pill);opacity:0;pointer-events:none;transition:all .25s var(--ease);z-index:300}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

/* FAQ */
.faq{max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);margin-bottom:14px;overflow:hidden;transition:box-shadow .2s var(--ease)}
.faq-item:hover{box-shadow:var(--shadow-1)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;text-align:left;padding:22px 24px;font-size:17px;font-weight:600;color:var(--title);position:relative}
.faq-item.is-open .faq-q{color:var(--primary)}
.faq-item.is-open .faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--primary)}
.faq-icon{flex:none;width:22px;height:22px;position:relative;transition:transform .25s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px}
.faq-icon::before{left:0;right:0;top:10px;height:2px}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px;transition:opacity .2s var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{display:none;padding:0 24px 24px;font-size:15px;line-height:1.8;color:var(--text)}
.faq-item.is-open .faq-a{display:block}

/* 页脚 */
.site-footer{background:var(--footer-bg);color:#fff;padding:64px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.5px;font-weight:600}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-mark{background:#fff;color:var(--footer-bg)}
.footer-brand .brand-mark::after{background:var(--amber)}
.footer-brand .brand-name{color:#fff;font-size:18px}
.footer-col p,.footer-col li{font-size:14px;line-height:1.9;color:rgba(255,255,255,.75)}
.footer-col li a{color:rgba(255,255,255,.75)}
.footer-col li a:hover{color:#fff}
.footer-col li{padding:4px 0}
.footer-divider{border-top:1px solid rgba(255,255,255,.12)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 0;font-size:13px;color:rgba(255,255,255,.62)}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:#fff}

/* 进场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1200px){
  .hero-title{font-size:38px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .nav-right .btn{display:none}
  .hero{padding:48px 0 64px}
  .hero-title{font-size:32px}
  .hero-sub{font-size:16px;max-width:100%}
  .hero-visual{margin-top:40px}
  .toc{position:static;margin-bottom:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:28px}
  .rail-nav{display:none}
}
@media (max-width:640px){
  .grid-container{padding-left:20px;padding-right:20px}
  .status-bar__inner{padding:0 20px;overflow-x:auto;white-space:nowrap}
  .status-count{display:none}
  .section{padding:48px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .section-head h2{font-size:24px}
  .hero-title{font-size:27px}
  .hero-actions .btn{width:100%}
  .hero-float{left:16px;right:16px;gap:16px;padding:14px 16px;justify-content:space-between}
  .hero-float .update{display:none}
  .feature-main{flex-direction:column}
  .feature-main .thumb{width:100%;aspect-ratio:16/10}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band{padding:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .share-field{width:100%;min-width:0}
  .rail-card{flex:0 0 240px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#1A56DB;
  --brand-dark:#0E3AA8;
  --brand-deep:#123A8C;
  --aux:#0FB5A0;
  --aux-deep:#0A8377;
  --accent:#F5A524;
  --accent-deep:#8A5A0A;
  --ok:#1F9D55;
  --warn:#D64545;
  --bg:#F4F6FA;
  --card:#FFFFFF;
  --line:#E3E8F0;
  --title:#101C33;
  --text:#46536B;
  --muted:#7A8699;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,28,51,.04), 0 8px 24px rgba(16,28,51,.06);
  --sh-2:0 16px 40px rgba(16,28,51,.10);
  --sh-3:0 20px 48px rgba(16,28,51,.14);
  --ease:cubic-bezier(.4,0,.2,1);
  --t:200ms;
  --mono:ui-monospace,"Roboto Mono",Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.1px;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--title);font-weight:700;letter-spacing:.1px}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;border-radius:var(--r-img)}
button{font-family:inherit;cursor:pointer;border:0;background:none}
ul{margin:0;padding:0;list-style:none}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px}
@media (min-width:1440px){.grid-container{max-width:1280px}}
@media (max-width:640px){.grid-container{padding-left:20px;padding-right:20px}}
.section{padding:96px 0}
@media (max-width:1023px){.section{padding:64px 0}}
@media (max-width:640px){.section{padding:48px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:30px;line-height:1.3}
.section-head p{margin-top:8px;font-size:14px;color:var(--muted)}
@media (max-width:640px){
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px}
  .section-head h2{font-size:24px}
}

/* 顶部状态条 */
.status-bar{background:rgba(26,86,219,.08);border-bottom:1px solid rgba(26,86,219,.14)}
.status-inner{display:flex;align-items:center;gap:16px;min-height:36px;padding-top:6px;padding-bottom:6px;overflow-x:auto;white-space:nowrap;-ms-overflow-style:none;scrollbar-width:none}
.status-inner::-webkit-scrollbar{display:none}
.status-text{font-size:13px;color:var(--text);flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis}
.countdown{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text);flex:0 0 auto}
.cd-label{color:var(--muted)}
.cd-num{font-family:var(--mono);font-weight:700;color:var(--accent-deep);background:rgba(245,165,36,.16);border-radius:8px;padding:2px 10px;letter-spacing:1px}
@media (max-width:640px){
  .status-text{max-width:180px}
  .cd-label{display:none}
}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;line-height:1;font-weight:500;white-space:nowrap}
.badge--cate{background:rgba(26,86,219,.10);color:var(--brand)}
.badge--state{background:rgba(15,181,160,.12);color:var(--aux-deep)}
.badge--live{background:rgba(245,165,36,.16);color:var(--accent-deep)}
.badge--done{background:rgba(122,134,153,.14);color:#5A6580}
.badge--open{background:rgba(31,157,85,.12);color:var(--ok)}

/* 按钮 */
.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:600;border:1px solid transparent;transition:background-color var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease)}
.btn--primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(26,86,219,.22)}
.btn--primary:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:#fff;color:var(--brand);border-color:rgba(26,86,219,.4)}
.btn--ghost:hover{background:rgba(26,86,219,.08)}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600}
.link-more i{transition:transform var(--t) var(--ease)}
.link-more:hover i{transform:translateX(2px)}

/* 导航 */
.site-header{background:#fff;border-top:3px solid var(--brand);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:60}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:17px;letter-spacing:0}
.brand-name{font-size:18px;font-weight:700;color:var(--title);letter-spacing:-.2px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:6px;padding:10px 14px;border-radius:8px;font-size:15px;font-weight:500;color:var(--text);transition:color var(--t) var(--ease),background-color var(--t) var(--ease)}
.nav-link:hover{color:var(--brand);background:var(--bg)}
.nav-link.active{color:var(--brand);font-weight:700}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand)}
.nav-tag{display:inline-flex;align-items:center;height:18px;padding:0 6px;border-radius:999px;font-size:11px;font-weight:600;background:rgba(245,165,36,.16);color:var(--accent-deep)}
.nav-tag--live{background:rgba(15,181,160,.14);color:var(--aux-deep)}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--title);transition:transform var(--t) var(--ease),opacity var(--t) var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-mask{position:fixed;inset:0;background:rgba(16,28,51,.42);opacity:0;visibility:hidden;transition:opacity var(--t) var(--ease),visibility var(--t) var(--ease);z-index:65}
.nav-mask.show{opacity:1;visibility:visible}
@media (max-width:900px){
  .nav-wrap{height:60px;gap:12px}
  .main-nav{position:fixed;top:0;right:0;bottom:0;width:min(86%,360px);background:#fff;flex-direction:column;align-items:stretch;gap:6px;margin:0;padding:84px 22px 28px;transform:translateX(102%);transition:transform 240ms var(--ease);z-index:70;box-shadow:var(--sh-3);overflow-y:auto}
  .main-nav.open{transform:translateX(0)}
  .main-nav .nav-link{font-size:18px;font-weight:700;padding:14px 12px;border-bottom:1px solid var(--line);border-radius:0}
  .main-nav .nav-link.active::after{display:none}
  .main-nav .nav-link.active{background:rgba(26,86,219,.06)}
  .nav-toggle{display:flex}
  .nav-right .btn--sm{display:none}
}

/* Hero */
.cat-hero{position:relative;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;border-bottom:1px solid var(--line);overflow:hidden}
.cat-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.93) 52%,rgba(255,255,255,.62) 100%)}
.cat-hero .grid-container{position:relative;z-index:1;padding-top:34px;padding-bottom:46px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted);transition:color var(--t) var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#C3CBD9}
.hero-inner{max-width:720px}
.hero-inner h1{font-size:44px;line-height:1.25;margin-top:14px}
.hero-inner .lead{margin-top:16px;font-size:17px;line-height:1.8;color:var(--text)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-fact{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 14px;font-size:13px;color:var(--text);box-shadow:var(--sh-1)}
.hero-fact i{color:var(--aux)}
@media (max-width:900px){.hero-inner h1{font-size:34px}}
@media (max-width:640px){
  .cat-hero .grid-container{padding-top:24px;padding-bottom:34px}
  .hero-inner h1{font-size:27px}
  .hero-inner .lead{font-size:15.5px}
}

/* 统计条 */
.stat-strip{background:#fff;border-bottom:1px solid var(--line)}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr)}
.stat-item{padding:26px 24px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0}
.stat-num{display:block;font-family:var(--mono);font-size:34px;font-weight:700;line-height:1.2;color:var(--brand);letter-spacing:-.5px}
.stat-label{display:block;margin-top:4px;font-size:15px;font-weight:600;color:var(--title)}
.stat-note{display:block;margin-top:2px;font-size:13px;color:var(--muted)}
@media (max-width:760px){
  .stat-grid{grid-template-columns:1fr}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);padding:18px 4px;display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
  .stat-item:last-child{border-bottom:0}
  .stat-num{font-size:26px}
  .stat-label{margin-top:0}
  .stat-note{margin-top:0;flex-basis:100%}
}

/* 目录 + 列表 */
.toc-inner{position:sticky;top:104px}
.toc-title{font-size:15px;font-weight:700;color:var(--title);padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:12px}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-link{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 12px;border-left:3px solid transparent;border-radius:0 8px 8px 0;font-size:14px;color:var(--text);transition:background-color var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease)}
.toc-link:hover{background:var(--bg);color:var(--brand)}
.toc-link.active{border-left-color:var(--brand);background:#F9FBFF;color:var(--brand);font-weight:700}
.toc-link span{font-family:var(--mono);font-size:12px;color:var(--muted)}
.toc-tip{margin-top:20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:16px;font-size:13px;line-height:1.75;color:var(--muted);box-shadow:var(--sh-1)}
.toc-tip strong{display:block;color:var(--title);font-size:14px;margin-bottom:4px}

.block-head{display:flex;align-items:center;gap:12px;margin-bottom:20px;scroll-margin-top:104px}
.block-head h2{font-size:24px;line-height:1.35}
.block-head .count{font-family:var(--mono);font-size:13px;color:var(--brand);background:rgba(26,86,219,.10);border-radius:var(--r-pill);padding:3px 10px}
.block-desc{margin:-10px 0 22px;font-size:14px;color:var(--muted);max-width:760px}

.row-list{display:flex;flex-direction:column;gap:18px}
.row-card{display:grid;grid-template-columns:196px 1fr 44px;gap:20px;align-items:center;background:#fff;border:1px solid var(--line);border-left:3px solid transparent;border-radius:var(--r-card);padding:18px;box-shadow:var(--sh-1);transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),transform var(--t) var(--ease),background-color var(--t) var(--ease)}
.row-card:hover{border-left-color:var(--brand);background:#F9FBFF;box-shadow:var(--sh-2);transform:translateY(-4px)}
.row-media{position:relative;display:block;border-radius:var(--r-img);overflow:hidden;background:rgba(26,86,219,.06);aspect-ratio:16/10}
.row-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.row-index{position:absolute;left:10px;top:10px;font-family:var(--mono);font-size:12px;font-weight:700;color:#fff;background:rgba(16,28,51,.62);border-radius:8px;padding:2px 8px;letter-spacing:1px}
.row-body{min-width:0}
.row-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
.row-body h3{font-size:19px;line-height:1.45}
.row-body h3 a{transition:color var(--t) var(--ease)}
.row-body h3 a:hover{color:var(--brand)}
.row-body p{margin-top:8px;font-size:14.5px;line-height:1.8;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.row-meta{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:12px;font-size:13px;color:var(--muted)}
.row-meta i{margin-right:5px;color:#9AA6B8}
.row-go{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--brand);transition:background-color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease)}
.row-go:hover{background:var(--brand);border-color:var(--brand);color:#fff;transform:translateX(2px)}
@media (max-width:768px){
  .row-card{grid-template-columns:1fr;gap:14px;padding:16px}
  .row-media{aspect-ratio:16/9}
  .row-go{width:100%;border-radius:var(--r-btn);height:40px}
}

/* 提示条 */
.tip-strip{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tip-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;padding:32px 0}
.tip-item{display:flex;gap:14px;align-items:flex-start}
.tip-icon{flex:0 0 auto;width:42px;height:42px;border-radius:12px;background:rgba(26,86,219,.10);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:17px}
.tip-item h3{font-size:17px;margin-bottom:4px}
.tip-item p{font-size:14px;color:var(--text)}
@media (max-width:768px){.tip-grid{grid-template-columns:1fr;gap:18px;padding:24px 0}}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:880px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:border-color var(--t) var(--ease)}
.faq-item[open]{border-color:rgba(26,86,219,.35)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;font-size:17px;font-weight:600;color:var(--title);position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;color:var(--muted);transition:transform var(--t) var(--ease)}
.faq-item[open] summary::after{transform:rotate(180deg);color:var(--brand)}
.faq-item[open] summary::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--brand)}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text)}

/* CTA */
.cta-band{padding:0 0 96px}
.cta-inner{background:rgba(26,86,219,.08);border:1px solid rgba(26,86,219,.2);border-radius:16px;padding:30px 32px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-text{max-width:520px}
.cta-text h2{font-size:24px}
.cta-text p{margin-top:8px;font-size:14.5px;color:var(--text)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.link-box{height:46px;min-width:250px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--muted);font-size:13px;font-family:var(--mono)}
.cta-feedback{font-size:13px;color:var(--ok);min-width:80px}
@media (max-width:900px){
  .cta-band{padding-bottom:64px}
  .cta-inner{padding:24px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .link-box{width:100%;min-width:0}
}
@media (max-width:640px){
  .cta-band{padding-bottom:48px}
  .cta-actions .btn{width:100%}
}

/* 页脚 */
.site-footer{background:var(--brand-deep);color:#fff}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding:56px 0 32px}
.footer-col{min-width:0}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{background:#fff;color:var(--brand-deep)}
.footer-brand .brand-name{color:#fff;font-size:18px;font-weight:700;letter-spacing:-.2px}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.78)}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:14px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:rgba(255,255,255,.78)}
.footer-col a{color:rgba(255,255,255,.78);transition:color var(--t) var(--ease)}
.footer-col a:hover{color:#fff}
.footer-divider{height:1px;background:rgba(255,255,255,.12)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:20px 0 28px;font-size:13px;color:rgba(255,255,255,.68)}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding:40px 0 24px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}

/* 滚动进场 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition:none!important;animation:none!important}
}

/* roulang page: article */
:root{
  --brand:#1A56DB;
  --brand-dark:#0E3AA8;
  --brand-deep:#123A8C;
  --accent:#0FB5A0;
  --accent-deep:#077A6C;
  --amber:#F5A524;
  --ok:#1F9D55;
  --warn:#D64545;
  --bg:#F4F6FA;
  --card:#FFFFFF;
  --line:#E3E8F0;
  --text:#101C33;
  --text-2:#46536B;
  --text-3:#7A8699;
  --tint:#F9FBFF;
  --radius:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,28,51,.04),0 8px 24px rgba(16,28,51,.06);
  --shadow-2:0 16px 40px rgba(16,28,51,.10);
  --shadow-3:0 20px 48px rgba(16,28,51,.14);
  --ease:cubic-bezier(.4,0,.2,1);
  --mono:ui-monospace,SFMono-Regular,"Roboto Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background:var(--bg);
  letter-spacing:.1px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{color:var(--text);margin:0;letter-spacing:-.2px;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.grid-container{max-width:1280px;padding-left:32px;padding-right:32px;margin-left:auto;margin-right:auto;}
a:focus-visible,button:focus-visible,.btn:focus-visible,.chip:focus-visible,.related-card:focus-visible,.prevnext a:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:all .2s var(--ease);text-decoration:none;
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(26,86,219,.22);}
.btn--primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn--primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(26,86,219,.2);}
.btn--ghost{background:#fff;color:var(--brand);border-color:rgba(26,86,219,.4);}
.btn--ghost:hover{background:rgba(26,86,219,.08);color:var(--brand);transform:translateY(-1px);}
.btn--sm{height:38px;padding:0 16px;font-size:14px;}
.btn--arrow::after{content:"→";font-size:14px;transition:transform .2s var(--ease);}
.btn--arrow:hover::after{transform:translateX(2px);}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1;}
.badge--cat{background:rgba(26,86,219,.10);color:var(--brand);}
.badge--live{background:rgba(15,181,160,.12);color:var(--accent-deep);}
.badge--time{background:rgba(245,165,36,.16);color:#8A5A05;}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-top:3px solid var(--brand);border-bottom:1px solid var(--line);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;}
.brand-mark{
  position:relative;width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:17px;letter-spacing:-.2px;
}
.brand-mark::after{content:"";position:absolute;right:6px;bottom:6px;width:5px;height:5px;border-radius:50%;background:var(--amber);}
.brand-name{font-size:18px;font-weight:700;letter-spacing:-.2px;color:var(--text);}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:8px;font-size:15px;color:var(--text-2);
  text-decoration:none;transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--brand);background:rgba(26,86,219,.06);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);}
.nav-tag{font-size:11px;line-height:1;padding:3px 6px;border-radius:999px;background:rgba(245,165,36,.16);color:#8A5A05;font-weight:600;}
.nav-tag--live{background:rgba(15,181,160,.14);color:var(--accent-deep);}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;padding:0;border:1px solid var(--line);border-radius:10px;
  background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;}
.nav-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ---------- 移动端抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(16,28,51,.45);z-index:110;opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,360px);z-index:120;background:#fff;
  padding:20px;display:flex;flex-direction:column;overflow-y:auto;
  transform:translateX(102%);transition:transform .28s var(--ease);box-shadow:var(--shadow-3);
}
body.nav-open .nav-drawer{transform:translateX(0);}
body.nav-open .drawer-mask{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:20px;line-height:1;color:var(--text-2);cursor:pointer;}
.drawer-cta{margin-top:18px;width:100%;}
.drawer-nav{display:flex;flex-direction:column;margin-top:18px;border-top:1px solid var(--line);}
.drawer-nav a{padding:15px 4px;font-size:17px;font-weight:600;color:var(--text);border-bottom:1px solid var(--line);}
.drawer-nav a:hover{color:var(--brand);}
.drawer-foot{margin-top:auto;padding-top:24px;font-size:12px;color:var(--text-3);line-height:1.9;}
.drawer-foot span{display:block;}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C3CAD6;}

/* ---------- 文章头 ---------- */
.article-hero{padding:40px 0 0;}
.article-kicker{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:22px 0 14px;}
.brand-line{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.2px;}
.brand-line .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
.article-title{font-size:42px;line-height:1.25;font-weight:800;color:var(--text);letter-spacing:-.4px;margin-bottom:18px;}
.article-lead{font-size:17px;line-height:1.8;color:var(--text-2);margin-bottom:22px;}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;
  padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-item svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.7;}
.share-group{display:flex;flex-wrap:wrap;gap:8px;margin-left:auto;}
.share-btn{
  display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--text-2);
  font-size:13px;cursor:pointer;transition:all .2s var(--ease);
}
.share-btn:hover{border-color:rgba(26,86,219,.4);color:var(--brand);background:rgba(26,86,219,.05);}
.share-btn svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.7;}

/* ---------- 头图 ---------- */
.article-cover{margin:28px 0 0;border-radius:16px;overflow:hidden;background:rgba(26,86,219,.06);box-shadow:var(--shadow-1);}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.article-cover figcaption{font-size:13px;color:var(--text-3);padding:10px 4px 0;background:transparent;}

/* ---------- 布局 ---------- */
.article-layout{display:block;padding:0 0 96px;}
.article-main{max-width:820px;margin:0 auto;}
.article-aside{display:none;}
.section-gap{padding:0 0 0;margin-top:56px;}

/* ---------- 正文 ---------- */
.article-body{font-size:16px;line-height:1.9;color:var(--text-2);margin-top:36px;letter-spacing:.1px;word-break:break-word;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{position:relative;font-size:24px;line-height:1.4;font-weight:700;color:var(--text);margin:40px 0 16px;padding-left:14px;}
.article-body h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--brand);}
.article-body h3{font-size:20px;line-height:1.45;font-weight:700;color:var(--text);margin:28px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;color:var(--text);margin:22px 0 10px;}
.article-body blockquote{margin:24px 0;padding:16px 20px;background:rgba(26,86,219,.06);border-left:3px solid var(--brand);border-radius:0 10px 10px 0;color:var(--text);}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.4em 0;}
.article-body img{border-radius:12px;margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--shadow-1);}
.article-body th,.article-body td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--line);}
.article-body thead th{background:#F7F9FC;color:var(--text);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#FAFBFE;}
.article-body pre{margin:24px 0;padding:16px 18px;background:#F1F3F8;border-radius:10px;overflow:auto;font-family:var(--mono);font-size:14px;line-height:1.7;color:#26314A;}
.article-body code{font-family:var(--mono);font-size:.94em;background:#F1F3F8;border-radius:6px;padding:2px 6px;color:#26314A;}
.article-body pre code{background:none;padding:0;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}

/* ---------- 空态 ---------- */
.article-empty{margin-top:36px;padding:40px 28px;background:#fff;border:1px solid var(--line);border-radius:16px;text-align:center;box-shadow:var(--shadow-1);}
.article-empty h2{font-size:22px;margin-bottom:10px;}
.article-empty p{font-size:15px;color:var(--text-3);margin-bottom:20px;}

/* ---------- 侧栏目录 ---------- */
.toc{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:var(--shadow-1);}
.toc h4{font-size:14px;margin-bottom:12px;letter-spacing:0;color:var(--text);}
.toc a{display:block;padding:8px 10px;margin-bottom:2px;font-size:13px;color:var(--text-2);border-left:3px solid transparent;border-radius:8px;transition:all .18s var(--ease);}
.toc a:hover{color:var(--brand);background:var(--tint);}
.toc a.active{border-left-color:var(--brand);background:var(--tint);color:var(--brand);font-weight:600;}

/* ---------- 标签 ---------- */
.chips{display:flex;flex-wrap:wrap;gap:8px;}
.chip{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;background:rgba(26,86,219,.08);color:var(--brand);font-size:13px;font-weight:500;transition:all .2s var(--ease);}
.chip:hover{background:rgba(26,86,219,.16);color:var(--brand-dark);}

/* ---------- 小标题行 ---------- */
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px;}
.block-head h2{font-size:22px;font-weight:700;}
.block-head .more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.block-head .more::after{content:"→";transition:transform .2s var(--ease);}
.block-head .more:hover::after{transform:translateX(2px);}

/* ---------- 上一篇 / 下一篇 ---------- */
.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.prevnext a{display:block;padding:20px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:all .2s var(--ease);}
.prevnext a:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(26,86,219,.32);}
.prevnext .dir{font-size:12px;font-weight:600;color:var(--text-3);letter-spacing:.4px;}
.prevnext .ttl{display:block;font-size:16px;font-weight:700;color:var(--text);margin:8px 0 6px;line-height:1.5;}
.prevnext .desc{font-size:13px;color:var(--text-3);line-height:1.7;}
.prevnext a:hover .ttl{color:var(--brand);}

/* ---------- 相关推荐 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.related-card{display:block;padding:20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:all .2s var(--ease);}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(26,86,219,.32);}
.related-num{display:block;font-family:var(--mono);font-size:13px;font-weight:700;color:var(--amber);letter-spacing:1px;margin-bottom:10px;}
.related-card .ttl{font-size:16px;font-weight:700;color:var(--text);line-height:1.5;margin-bottom:8px;}
.related-card:hover .ttl{color:var(--brand);}
.related-card .desc{font-size:13px;color:var(--text-3);line-height:1.75;}

/* ---------- CTA 带 ---------- */
.cta-band{
  display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
  padding:28px;background:rgba(26,86,219,.08);border:1px solid rgba(26,86,219,.2);border-radius:16px;
}
.cta-band h3{font-size:20px;margin-bottom:6px;}
.cta-band p{font-size:14px;color:var(--text-2);}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.copy-field{
  display:flex;align-items:center;height:44px;max-width:260px;padding:0 14px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-btn);font-size:13px;color:var(--text-3);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.back-line{display:flex;justify-content:center;margin-top:44px;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;background:var(--brand-deep);color:rgba(255,255,255,.86);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:#fff;color:var(--brand-deep);}
.footer-brand .brand-name{color:#fff;font-size:18px;font-weight:700;}
.footer-col p{font-size:13px;line-height:1.9;color:rgba(255,255,255,.72);}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:0;}
.footer-col ul li{font-size:13px;line-height:2.1;color:rgba(255,255,255,.72);}
.footer-col ul li a{color:rgba(255,255,255,.8);}
.footer-col ul li a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-divider{height:1px;background:rgba(255,255,255,.12);margin:44px 0 0;}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:22px 0;font-size:12px;color:rgba(255,255,255,.62);}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 200px;gap:56px;align-items:start;max-width:1080px;margin:0 auto;}
  .article-main{max-width:none;margin:0;}
  .article-aside{display:block;position:sticky;top:104px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .nav-right .btn{display:none;}
  .nav-wrap{min-height:60px;}
  .article-title{font-size:34px;}
  .article-hero{padding:28px 0 0;}
  .article-layout{padding-bottom:72px;}
  .reveal{transform:none;}
}
@media (max-width:767px){
  .grid-container{padding-left:20px;padding-right:20px;}
  .article-title{font-size:28px;line-height:1.32;}
  .article-lead{font-size:15px;}
  .article-meta{gap:8px 14px;}
  .share-group{margin-left:0;width:100%;}
  .related-grid{grid-template-columns:1fr;}
  .prevnext{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .copy-field{max-width:none;width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .site-footer{padding-top:48px;margin-top:64px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .block-head h2{font-size:19px;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:18px;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --brand:#1A56DB;
  --brand-dark:#0E3AA8;
  --brand-deep:#123A8C;
  --teal:#0FB5A0;
  --teal-deep:#0A8577;
  --amber:#F5A524;
  --amber-deep:#7A4C05;
  --success:#1F9D55;
  --danger:#D64545;
  --bg:#F4F6FA;
  --card:#FFFFFF;
  --line:#E3E8F0;
  --title:#101C33;
  --text:#46536B;
  --muted:#7A8699;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,28,51,.04),0 8px 24px rgba(16,28,51,.06);
  --sh-2:0 16px 40px rgba(16,28,51,.10);
  --sh-3:0 20px 48px rgba(16,28,51,.14);
  --ease:cubic-bezier(.4,0,.2,1);
  --mono:ui-monospace,SFMono-Regular,"Roboto Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.1px;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--brand);}
button{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--title);font-weight:700;letter-spacing:-.2px;}
p{margin:0;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.grid-container{max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;width:100%;}
@media (min-width:1440px){.grid-container{max-width:1280px;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-top:3px solid var(--brand);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,28,51,.03);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  position:relative;width:36px;height:36px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;letter-spacing:-.2px;
}
.brand-mark::after{
  content:"";position:absolute;right:5px;bottom:6px;
  width:5px;height:5px;border-radius:50%;background:#fff;opacity:.9;
}
.brand-name{font-weight:700;font-size:18px;color:var(--title);letter-spacing:-.2px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:8px;font-size:15px;font-weight:500;color:var(--text);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--brand);background:rgba(26,86,219,.06);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-tag{
  margin-left:6px;font-size:11px;line-height:1;font-weight:600;
  padding:3px 7px;border-radius:999px;
  background:rgba(245,165,36,.16);color:var(--amber-deep);
}
.nav-tag--live{background:rgba(15,181,160,.14);color:var(--teal-deep);}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-drawer-cta,.nav-drawer-foot{display:none;}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{background:rgba(26,86,219,.06);border-color:rgba(26,86,219,.35);}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--title);transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.nav-mask{
  position:fixed;inset:0;background:rgba(16,28,51,.4);z-index:75;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.nav-mask.is-open{opacity:1;visibility:visible;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;
  font-weight:600;font-size:15px;line-height:1;cursor:pointer;
  padding:0 22px;height:46px;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn--sm{height:38px;padding:0 16px;font-size:14px;}
.btn--lg{height:50px;padding:0 26px;font-size:16px;}
.btn--primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(26,86,219,.20);}
.btn--primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(26,86,219,.26);}
.btn--primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(26,86,219,.20);}
.btn--ghost{background:#fff;border-color:rgba(26,86,219,.4);color:var(--brand);}
.btn--ghost:hover{background:rgba(26,86,219,.08);color:var(--brand);transform:translateY(-1px);}
.btn--ghost:active{transform:translateY(0);}
.btn.is-done{background:var(--success);border-color:var(--success);color:#fff;}

/* ---------- Common ---------- */
.section{padding-top:96px;}
.section--tight{padding-top:64px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-head h2{font-size:30px;line-height:1.3;}
.section-head p{margin-top:10px;font-size:15px;color:var(--muted);max-width:680px;}
.section-head .head-link{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.section-head .head-link::after{content:"→";transition:transform .2s var(--ease);}
.section-head .head-link:hover::after{transform:translateX(3px);}

.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;letter-spacing:.2px;
}
.badge--cat{background:rgba(26,86,219,.10);color:var(--brand);}
.badge--live{background:rgba(15,181,160,.14);color:var(--teal-deep);}
.badge--limit{background:rgba(245,165,36,.18);color:var(--amber-deep);}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:56px 0 64px;
  background-image:linear-gradient(90deg,#F4F6FA 0%,rgba(244,246,250,.94) 46%,rgba(244,246,250,.62) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:26px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb span{color:#B6BFCE;}
.crumb-current{color:var(--title);font-weight:600;}
.page-hero h1{
  font-size:44px;line-height:1.25;margin:16px 0 18px;max-width:15em;letter-spacing:-.4px;
}
.page-hero .hero-lead{font-size:17px;line-height:1.8;color:var(--text);max-width:34em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-meta .badge{height:28px;padding:0 12px;font-size:12.5px;}
.hero-figure{
  border-radius:16px;overflow:hidden;box-shadow:var(--sh-2);background:rgba(26,86,219,.06);
}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}

/* ---------- Chips ---------- */
.chip-bar{
  display:flex;gap:10px;overflow-x:auto;padding:4px 2px 12px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.chip-bar::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;height:40px;padding:0 18px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--text);
  font-size:14px;font-weight:600;cursor:pointer;
  transition:all .2s var(--ease);
}
.chip:hover{border-color:rgba(26,86,219,.4);color:var(--brand);}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(26,86,219,.20);}

/* ---------- Waterfall cards ---------- */
.water-grid{margin-top:4px;}
.water-col{display:flex;flex-direction:column;gap:24px;}
.w-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.w-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(26,86,219,.28);}
.w-card__media{position:relative;background:rgba(26,86,219,.06);}
.w-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.w-card--lead .w-card__media img{aspect-ratio:16/10;}
.w-card__body{padding:22px;}
.w-card__top{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.w-card__body h3{font-size:20px;line-height:1.45;margin-bottom:10px;}
.w-card:hover .w-card__body h3{color:var(--brand);}
.w-card__body p{font-size:14.5px;color:var(--text);line-height:1.8;}
.w-card__meta{
  display:flex;align-items:center;gap:8px;margin-top:16px;padding-top:16px;
  border-top:1px solid var(--line);font-size:13px;color:var(--muted);
}
.w-card__meta .dot{width:4px;height:4px;border-radius:50%;background:#C6CEDA;}
.w-card__arrow{margin-left:auto;color:var(--brand);font-weight:600;transition:transform .2s var(--ease);}
.w-card:hover .w-card__arrow{transform:translateX(3px);}

/* ---------- Timeline ---------- */
.section--alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.timeline{position:relative;margin-top:8px;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:5px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,rgba(26,86,219,.55),rgba(26,86,219,.15));
  border-radius:2px;
}
.timeline-item{position:relative;padding:0 0 32px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-node{
  position:absolute;left:-34px;top:9px;width:10px;height:10px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 4px rgba(26,86,219,.14);
}
.timeline-body{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.timeline-body:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(26,86,219,.25);}
.timeline-top{display:flex;align-items:center;gap:12px;margin-bottom:10px;flex-wrap:wrap;}
.tl-step{
  font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.4px;
  color:var(--brand);background:rgba(26,86,219,.10);border-radius:999px;padding:4px 10px;
}
.timeline-top time{font-size:13px;color:var(--muted);}
.timeline-body h3{font-size:19px;margin-bottom:8px;}
.timeline-body p{font-size:14.5px;line-height:1.85;}

/* ---------- Q&A ---------- */
.qa-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.qa-item{
  display:flex;gap:16px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.qa-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(26,86,219,.25);}
.qa-mark{
  flex:0 0 auto;width:38px;height:38px;border-radius:10px;background:rgba(26,86,219,.10);
  color:var(--brand);font-weight:700;font-size:15px;
  display:inline-flex;align-items:center;justify-content:center;
}
.qa-item--wide{grid-column:1/-1;}
.qa-body h3{font-size:17px;line-height:1.5;margin-bottom:8px;}
.qa-body p{font-size:14.5px;line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  background:rgba(26,86,219,.08);
  border:1px solid rgba(26,86,219,.20);
  border-radius:16px;
  padding:32px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:26px;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--text);max-width:44em;}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.link-box{
  height:46px;width:280px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--muted);
  padding:0 14px;font-size:13.5px;font-family:var(--mono);
}
.link-box:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(26,86,219,.12);}

/* ---------- Footer ---------- */
.site-footer{margin-top:96px;background:var(--brand-deep);color:#fff;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);}
.footer-brand .brand-name{color:#fff;font-size:17px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:700;}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.76);max-width:30em;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col li{font-size:14px;color:rgba(255,255,255,.76);}
.footer-col ul a{color:rgba(255,255,255,.76);transition:color .2s var(--ease),padding-left .2s var(--ease);}
.footer-col ul a:hover{color:#fff;padding-left:4px;}
.footer-divider{height:1px;background:rgba(255,255,255,.12);margin:40px 0 22px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-bottom:32px;font-size:13px;color:rgba(255,255,255,.66);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{scroll-behavior:auto!important;}
}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px;}
  .section{padding-top:64px;}
  .nav-toggle{display:flex;}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);
    background:#fff;z-index:90;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:6px;
    padding:88px 22px 28px;
    transform:translateX(102%);
    transition:transform .28s var(--ease);
    box-shadow:var(--sh-3);overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{font-size:18px;font-weight:600;padding:14px 12px;border-radius:10px;}
  .nav-link.active::after{display:none;}
  .nav-link.active{background:rgba(26,86,219,.08);}
  .nav-drawer-cta{display:block;margin-bottom:16px;}
  .nav-drawer-cta .btn{width:100%;}
  .nav-drawer-foot{
    display:block;margin-top:24px;padding-top:20px;
    border-top:1px solid var(--line);font-size:13px;color:var(--muted);line-height:1.9;
  }
  .brand-name{font-size:17px;}
  .page-hero{padding:40px 0 48px;background-image:linear-gradient(180deg,#F4F6FA 0%,rgba(244,246,250,.92) 100%),url("/assets/images/backpic/back-2.webp");}
  .page-hero h1{font-size:34px;max-width:none;}
  .hero-figure{margin-top:28px;}
  .qa-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .site-footer{margin-top:64px;}
}
@media (max-width:639px){
  .grid-container{padding-left:20px;padding-right:20px;}
  .section{padding-top:48px;}
  .nav-wrap{height:60px;}
  .brand-mark{width:32px;height:32px;font-size:16px;border-radius:9px;}
  .brand-name{font-size:16px;}
  .page-hero{padding:28px 0 40px;}
  .page-hero h1{font-size:27px;letter-spacing:-.2px;}
  .page-hero .hero-lead{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px;}
  .section-head h2{font-size:23px;}
  .w-card__body{padding:18px;}
  .w-card__body h3{font-size:18px;}
  .timeline{padding-left:26px;}
  .timeline-node{left:-26px;}
  .timeline-body{padding:18px;}
  .cta-band{padding:24px;}
  .cta-band h2{font-size:21px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .link-box{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}