/* roulang page: index */
:root{
  --brand:#1449C8;
  --brand-deep:#0C2A72;
  --brand-light:#E8EEFB;
  --brand-tint:#EDF2FD;
  --accent:#FF6A2B;
  --teal:#12A594;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E3E8F0;
  --text:#1B2430;
  --text-2:#5A6474;
  --text-3:#8A94A6;
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-sm:0 2px 8px rgba(20,73,200,.06);
  --shadow-md:0 10px 28px rgba(20,73,200,.12);
  --ease:200ms ease;
  --side-w:96px;
  --section-y:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-left:var(--side-w);
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease)}
a:hover,a:focus{color:var(--brand-deep);text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);line-height:1.35;font-family:var(--font)}
h1{font-size:38px;line-height:1.3}
h2{font-size:28px}
h3{font-size:20px;font-weight:600;line-height:1.45}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--section-y) 0}
.section--tight{padding:56px 0}
.section-head{margin-bottom:36px;max-width:760px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:16px;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:var(--brand-light);color:var(--brand);
  font-size:13px;font-weight:600;letter-spacing:.02em;margin-bottom:18px;
}
.eyebrow i{font-size:12px}
.num{font-variant-numeric:tabular-nums;font-weight:700}

/* ---------- 左侧竖向导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;width:var(--side-w);height:100vh;z-index:70;
  background:var(--card);border-right:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;
  padding:20px 8px 22px;
}
.side-nav__brand{
  display:flex;flex-direction:column;align-items:center;gap:8px;
  text-align:center;width:100%;margin-bottom:26px;color:var(--text);
}
.brand-block{
  width:56px;height:56px;border-radius:14px;background:var(--brand);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;letter-spacing:.04em;flex:none;
  box-shadow:0 6px 16px rgba(20,73,200,.22);
}
.brand-block--sm{width:38px;height:38px;border-radius:10px;font-size:15px}
.side-nav__brand .brand-name{
  font-size:11px;line-height:1.4;color:var(--text-2);font-weight:600;letter-spacing:.02em;
}
.side-nav__menu{display:flex;flex-direction:column;gap:6px;width:100%;flex:1}
.side-link{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  padding:12px 2px;border-radius:12px;color:var(--text-2);
  font-size:12px;font-weight:600;text-align:center;line-height:1.25;
  min-height:64px;transition:background-color var(--ease),color var(--ease);
}
.side-link i{font-size:17px}
.side-link:hover{background:var(--brand-tint);color:var(--brand)}
.side-link.is-active{background:var(--brand-light);color:var(--brand)}
.side-link.is-active::before{
  content:"";position:absolute;left:-8px;top:50%;transform:translateY(-50%);
  width:3px;height:26px;border-radius:0 3px 3px 0;background:var(--brand);
}
.side-nav__cta{
  margin-top:16px;display:flex;flex-direction:column;align-items:center;gap:6px;
  font-size:12px;font-weight:600;color:var(--brand);
}
.cta-circle{
  width:48px;height:48px;border-radius:50%;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;
  box-shadow:0 8px 18px rgba(255,106,43,.3);transition:transform var(--ease);
}
.side-nav__cta:hover .cta-circle{transform:translateY(-2px) scale(1.04)}
.side-nav__cta:hover{color:var(--brand-deep)}

/* ---------- 移动端顶部导航 ---------- */
.topbar{display:none}
.drawer{display:none}
.drawer-mask{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;line-height:1;cursor:pointer;border:1px solid transparent;
  transition:transform var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
  white-space:nowrap;text-align:center;
}
.btn i{font-size:14px}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-sm)}
.btn--primary:hover{background:var(--brand-deep);color:#fff;transform:scale(1.02)}
.btn--accent{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,106,43,.24)}
.btn--accent:hover{background:#E85A1B;color:#fff;transform:scale(1.02)}
.btn--ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn--ghost:hover{background:var(--brand-light);color:var(--brand-deep)}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn--outline-light:hover{background:rgba(255,255,255,.14);color:#fff}
.btn--sm{min-height:40px;padding:0 18px;font-size:15px}
.btn--block{width:100%}
.btn--text{background:none;border:none;color:var(--brand);padding:0;min-height:auto;font-size:15px;font-weight:600}
.btn--text:hover{color:var(--brand-deep);text-decoration:underline}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;line-height:1.6;
  background:var(--brand-light);color:var(--brand);white-space:nowrap;
}
.badge--accent{background:var(--accent);color:#fff}
.badge--teal{background:rgba(18,165,148,.12);color:var(--teal)}
.badge--muted{background:#EEF1F6;color:var(--text-2)}
.tag{
  display:inline-block;padding:4px 10px;border-radius:8px;
  background:#F1F4FA;color:var(--text-2);font-size:12.5px;font-weight:500;
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--card);border-bottom:1px solid var(--line)}
.hero__bg{position:absolute;top:0;right:0;bottom:0;width:40%;background:var(--brand-tint);z-index:0}
.hero .container{position:relative;z-index:1}
.hero .grid-x{padding:76px 0 84px}
.hero__title{font-size:38px;line-height:1.3;margin-bottom:18px;max-width:620px}
.hero__title em{font-style:normal;color:var(--brand)}
.hero__sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:24px}
.hero__badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.hero__badges .badge{background:#fff;border:1px solid var(--line);color:var(--text-2)}
.hero__badges .badge i{color:var(--brand)}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px}
.hero__media{
  margin:0;border-radius:20px;overflow:hidden;background:var(--brand-light);
  aspect-ratio:16/10;box-shadow:var(--shadow-md);position:relative;
}
.hero__media img{width:100%;height:100%;object-fit:cover}

/* ---------- 数据条 ---------- */
.stat-bar{background:var(--card);border-bottom:1px solid var(--line)}
.stat-bar__inner{display:flex;flex-wrap:wrap}
.stat{
  flex:1 1 25%;min-width:160px;padding:26px 20px;text-align:center;
  border-right:1px solid var(--line);
}
.stat:last-child{border-right:none}
.stat__num{font-size:28px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2}
.stat__num span{font-size:16px;color:var(--text-2);font-weight:600;margin-left:2px}
.stat__label{font-size:14px;color:var(--text-2);margin-top:4px}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:0}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:var(--line)}
.timeline__day{
  position:relative;font-size:15px;font-weight:600;color:var(--brand);
  margin:0 0 16px;padding-left:40px;
}
.timeline__day:not(:first-child){margin-top:34px}
.timeline__item{position:relative;padding-left:40px;margin-bottom:16px}
.timeline__dot{
  position:absolute;left:2px;top:26px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:2px solid var(--brand);z-index:1;
}
.timeline__item.is-current .timeline__dot{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 4px rgba(255,106,43,.16)}
.timeline__card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 24px;transition:transform var(--ease),box-shadow var(--ease);
}
.timeline__card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.timeline__top{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:6px}
.timeline__time{font-size:17px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums}
.timeline__card h3{font-size:18px;margin-bottom:6px}
.timeline__meta{font-size:14px;color:var(--text-2);margin:0 0 10px}
.timeline__meta i{color:var(--brand);margin-right:6px;font-size:13px}
.timeline__tags{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- 嘉宾 / 亮点 ---------- */
.speaker-lg{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;height:100%;transition:transform var(--ease),box-shadow var(--ease);
  display:flex;flex-direction:column;
}
.speaker-lg:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.speaker-lg__media{aspect-ratio:16/10;background:var(--brand-light)}
.speaker-lg__media img{width:100%;height:100%;object-fit:cover}
.speaker-lg__body{padding:24px 26px}
.speaker-lg__body h3{font-size:21px;margin-bottom:6px}
.speaker-lg__role{font-size:13.5px;color:var(--brand);font-weight:600;margin-bottom:12px}
.speaker-lg__body p{font-size:15px;color:var(--text-2);margin:0}
.speaker-sm{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;height:100%;display:flex;flex-direction:column;gap:10px;
  transition:transform var(--ease),box-shadow var(--ease);
}
.speaker-sm:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.speaker-sm__avatar{
  width:48px;height:48px;border-radius:14px;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px;
}
.speaker-sm h3{font-size:18px;margin:0}
.speaker-sm span{font-size:13.5px;color:var(--text-2)}

/* ---------- 票种对比 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.plan-card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 26px;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.plan-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.plan-card--featured{border-color:var(--brand);background:var(--brand-tint)}
.plan-card__flag{
  position:absolute;top:-12px;right:20px;background:var(--accent);color:#fff;
  font-size:12px;font-weight:600;padding:3px 12px;border-radius:var(--radius-pill);
}
.plan-card h3{font-size:19px;margin-bottom:4px}
.plan-card__price{font-size:34px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2;margin:6px 0 4px}
.plan-card__price small{font-size:15px;font-weight:600;color:var(--text-2);margin-left:4px}
.plan-card__note{font-size:13.5px;color:var(--text-2);margin-bottom:18px}
.plan-list{margin-bottom:22px;flex:1}
.plan-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--text);padding:7px 0}
.plan-list li i{margin-top:5px;font-size:13px;color:var(--teal)}
.plan-list li.is-off{color:var(--text-3)}
.plan-list li.is-off i{color:#C3CAD6}
.plan-card .btn{margin-top:auto}

/* ---------- 资讯 / 最新信息 ---------- */
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  margin-bottom:24px;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#D5DEF0}
.news-card__link{display:flex;flex-direction:column;height:100%;color:inherit}
.news-card__link:hover{color:inherit}
.news-card__media{aspect-ratio:16/9;background:var(--brand-light);overflow:hidden}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease}
.news-card:hover .news-card__media img{transform:scale(1.04)}
.news-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.news-card__body .badge{align-self:flex-start;margin-bottom:12px}
.news-card__title{
  font-size:19px;font-weight:600;line-height:1.45;margin-bottom:10px;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__desc{
  font-size:15px;color:var(--text-2);line-height:1.7;margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13.5px;color:var(--text-3);border-top:1px solid var(--line);padding-top:14px;
}
.news-card__more{color:var(--brand);font-weight:600}
.empty-state{
  background:#F0F3F8;border:1px dashed #D7DEEA;border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;color:var(--text-2);font-size:15px;
}
.empty-state i{display:block;font-size:26px;color:var(--text-3);margin-bottom:12px}

/* ---------- CTA 区块 ---------- */
.cta-band{
  background:var(--brand-deep);border-radius:24px;padding:48px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px}
.cta-band p{color:#C9D6F0;font-size:16px;margin:0;max-width:560px}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- FAQ ---------- */
.faq-list{border:none;background:transparent;margin:0}
.faq-list .accordion-item{
  border:1px solid var(--line);border-radius:12px;background:var(--card);
  margin-bottom:12px;overflow:hidden;
}
.faq-list .accordion-item.is-active{border-color:#CFDBF3;box-shadow:var(--shadow-sm)}
.faq-list .accordion-title{
  display:block;border:none;background:var(--card);color:var(--text);
  font-size:17px;font-weight:600;padding:18px 58px 18px 22px;position:relative;
  transition:background-color var(--ease),color var(--ease);
}
.faq-list .accordion-title:hover,
.faq-list .accordion-title:focus{background:var(--brand-tint);color:var(--brand)}
.faq-list .accordion-title::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand);line-height:1;
  transition:transform var(--ease);
}
.faq-list .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(45deg)}
.faq-list .accordion-content{
  border:none;border-top:1px solid var(--line);background:#F7F9FD;
  padding:16px 22px;color:var(--text-2);font-size:15px;line-height:1.8;
}
.faq-list .accordion-content p{margin:0}

/* ---------- 底部信息补充 ---------- */
.info-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.info-col h3{font-size:17px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.info-col ul li{font-size:15px;color:var(--text-2);padding:6px 0;display:flex;gap:10px;align-items:flex-start}
.info-col ul li i{color:var(--brand);font-size:13px;margin-top:6px}
.info-col a{color:var(--text-2)}
.info-col a:hover{color:var(--brand)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-deep);color:#C9D6F0;margin-top:0;padding:64px 0 0}
.site-footer a{color:#C9D6F0}
.site-footer a:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-block{background:#fff;color:var(--brand-deep)}
.footer-brand strong{color:#fff;font-size:16px;font-weight:700;line-height:1.4}
.site-footer p{font-size:14px;line-height:1.8;color:#A9BAE0;margin:0}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul li{padding:5px 0;font-size:14px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0;
  text-align:center;font-size:13px;color:#9CAFD9;
}
.footer-bottom span{margin:0 6px}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--brand);color:#fff;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:15px;
  box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease),background-color var(--ease);
  z-index:80;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-deep)}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1279px){
  .hero__title{font-size:34px}
  h1{font-size:34px}
  h2{font-size:26px}
}
@media screen and (max-width:1023px){
  body{padding-left:0}
  .side-nav{display:none}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:sticky;top:0;z-index:90;height:60px;padding:0 16px;
    background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);
    backdrop-filter:saturate(180%) blur(8px);
  }
  .topbar__brand{display:flex;align-items:center;gap:10px;color:var(--text);font-size:14px;font-weight:700}
  .topbar__toggle{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
    color:var(--brand);font-size:17px;cursor:pointer;display:flex;align-items:center;justify-content:center;
  }
  .topbar__toggle:hover{background:var(--brand-tint)}
  .drawer{
    display:block;position:fixed;top:0;left:0;bottom:0;width:80%;max-width:320px;
    background:#fff;z-index:100;transform:translateX(-100%);
    transition:transform 260ms ease;padding:22px 18px;overflow-y:auto;
    border-right:1px solid var(--line);
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer__head{display:flex;align-items:center;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:16px}
  .drawer__head strong{font-size:15px;line-height:1.35}
  .drawer__close{margin-left:auto;background:none;border:none;font-size:19px;color:var(--text-2);cursor:pointer;width:40px;height:40px;border-radius:10px}
  .drawer__close:hover{background:var(--brand-tint);color:var(--brand)}
  .drawer__link{
    display:flex;align-items:center;gap:12px;padding:14px 12px;border-radius:12px;
    color:var(--text-2);font-size:15px;font-weight:600;min-height:48px;
  }
  .drawer__link i{width:20px;text-align:center;font-size:15px}
  .drawer__link:hover{background:var(--brand-tint);color:var(--brand)}
  .drawer__link.is-active{background:var(--brand-light);color:var(--brand)}
  .drawer .btn{margin-top:20px}
  .drawer-mask{
    display:block;position:fixed;inset:0;background:rgba(12,42,114,.42);
    opacity:0;visibility:hidden;transition:opacity 260ms ease,visibility 260ms ease;z-index:95;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .hero__bg{display:none}
  .hero .grid-x{padding:48px 0 56px}
  .hero__title{font-size:30px;max-width:none}
  .hero__media{margin-top:32px}
  .section{padding:60px 0}
  .plan-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .info-cols{grid-template-columns:1fr;gap:24px}
  .cta-band{padding:32px 24px;border-radius:18px}
}
@media screen and (max-width:767px){
  .container{padding:0 16px}
  .hero__title{font-size:26px}
  h1{font-size:26px}
  h2{font-size:22px}
  h3{font-size:18px}
  body{font-size:15.5px}
  .stat{flex:1 1 50%;min-width:0;border-right:none;border-bottom:1px solid var(--line);padding:20px 12px}
  .stat:nth-child(odd){border-right:1px solid var(--line)}
  .stat:nth-last-child(-n+2){border-bottom:none}
  .hero__actions .btn{width:100%}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{width:100%}
  .timeline::before{left:4px}
  .timeline__item{padding-left:22px}
  .timeline__day{padding-left:22px}
  .timeline__dot{left:0;top:24px;width:10px;height:10px}
  .timeline__card{padding:16px 18px}
  .faq-list .accordion-title{font-size:15.5px;padding:15px 48px 15px 18px}
  .faq-list .accordion-content{padding:14px 18px}
  .footer-grid{grid-template-columns:1fr}
  .plan-card{padding:22px 20px}
  .to-top{right:16px;bottom:16px}
}
@media screen and (max-width:479px){
  .hero__title{font-size:23px}
  .topbar__brand span{font-size:13px}
  .section{padding:48px 0}
  .brand-block{width:48px;height:48px;font-size:16px}
}

/* roulang page: category1 */
:root{
  --brand:#1449C8;
  --brand-deep:#0C2A72;
  --brand-soft:#E8EEFB;
  --brand-tint:#EDF2FD;
  --accent:#FF6A2B;
  --teal:#12A594;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E3E8F0;
  --text:#1B2430;
  --muted:#5A6474;
  --weak:#8A94A6;
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 2px 8px rgba(20,73,200,.06);
  --shadow-2:0 10px 28px rgba(20,73,200,.12);
  --ease:200ms ease;
  --nav-w:96px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-deep)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--text)}
h1{font-size:34px;line-height:1.3}
h2{font-size:28px;line-height:1.35}
h3{font-size:20px;line-height:1.45;font-weight:600}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums;font-weight:700}

/* ---------- 侧栏导航 ---------- */
.side-nav{
  position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;
  padding:20px 0 24px;z-index:60;
}
.side-nav__brand{
  display:flex;flex-direction:column;align-items:center;gap:8px;margin-bottom:28px;
}
.brand-block{
  width:56px;height:56px;border-radius:14px;background:var(--brand);
  color:#fff;font-size:19px;font-weight:700;letter-spacing:1px;
  display:flex;align-items:center;justify-content:center;
}
.side-nav__brand-text{font-size:12px;line-height:1.35;color:var(--muted);text-align:center;letter-spacing:.5px}
.side-nav__menu{display:flex;flex-direction:column;gap:6px;width:100%;padding:0 8px;flex:1}
.side-link{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:12px 4px;border-radius:12px;color:var(--muted);
  font-size:13px;line-height:1.3;text-align:center;transition:background var(--ease),color var(--ease);
}
.side-link i{font-size:17px}
.side-link:hover{background:var(--brand-soft);color:var(--brand)}
.side-link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.side-link.is-active::before{
  content:"";position:absolute;left:-8px;top:14px;bottom:14px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.side-nav__foot{display:flex;flex-direction:column;align-items:center;gap:8px;padding-top:16px;border-top:1px solid var(--line);width:64px}
.side-nav__login{
  width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;
  transition:background var(--ease),transform var(--ease);
}
.side-nav__login:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px)}
.side-nav__foot span{font-size:12px;color:var(--weak)}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  background:#fff;border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 16px;
  box-shadow:0 2px 12px rgba(20,73,200,.06);
}
.topbar__menu{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--brand);font-size:18px;display:flex;align-items:center;justify-content:center;
}
.topbar__brand{font-size:16px;font-weight:700;color:var(--text)}
.topbar__cta{
  height:38px;padding:0 14px;border-radius:var(--r-btn);background:var(--brand);color:#fff;
  font-size:14px;font-weight:600;display:inline-flex;align-items:center;
}
.topbar__cta:hover{background:var(--brand-deep);color:#fff}

/* ---------- 抽屉 ---------- */
.off-canvas{
  width:80%;max-width:320px;background:#fff;border-right:1px solid var(--line);
}
.drawer__head{display:flex;align-items:center;gap:12px;padding:20px 18px;border-bottom:1px solid var(--line)}
.drawer__head strong{font-size:16px;color:var(--text)}
.drawer__nav{display:flex;flex-direction:column;padding:12px 10px;gap:4px}
.drawer__link{
  display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:12px;
  color:var(--muted);font-size:15px;min-height:48px;
}
.drawer__link i{width:18px;text-align:center;color:var(--brand)}
.drawer__link:hover{background:var(--brand-soft);color:var(--brand)}
.drawer__link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.drawer__foot{padding:16px 18px;border-top:1px solid var(--line)}

/* ---------- 主区域 ---------- */
.off-canvas-content{padding:0;box-shadow:none}
.main-area{margin-left:var(--nav-w);width:calc(100% - var(--nav-w));}
.section{padding:72px 0}
.section--tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand);
  letter-spacing:1px;margin-bottom:10px;
}
.section-head p{color:var(--muted);margin:12px 0 0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:16px;font-weight:600;line-height:1;cursor:pointer;
  transition:background var(--ease),color var(--ease),transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:scale(1.02);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#e85a1e;color:#fff;transform:scale(1.02)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-link{background:none;border:0;padding:0;min-height:auto;color:var(--brand);font-weight:600}
.btn-link:hover{text-decoration:underline;color:var(--brand-deep)}
.btn--block{width:100%}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:var(--r-pill);padding:5px 13px;font-size:13px;font-weight:600;line-height:1.5;
}
.badge-soft{background:var(--brand-soft);color:var(--brand)}
.badge-accent{background:var(--accent);color:#fff}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--muted)}
.badge-teal{background:rgba(18,165,148,.12);color:var(--teal)}

/* ---------- 小 Hero ---------- */
.sub-hero{background:#fff;border-bottom:1px solid var(--line);padding:52px 0 48px;position:relative;overflow:hidden}
.sub-hero::after{
  content:"";position:absolute;right:0;top:0;bottom:0;width:38%;background:var(--brand-tint);z-index:0;
}
.sub-hero .container{position:relative;z-index:1}
.sub-hero h1{font-size:33px;margin:14px 0 14px;max-width:620px}
.sub-hero__lead{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:20px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.ratio-16-10{
  position:relative;padding-top:62.5%;border-radius:20px;overflow:hidden;
  background:var(--brand-tint);box-shadow:var(--shadow-1);
}
.ratio-16-10 img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.sub-hero__media{margin-top:28px}

/* ---------- 图文交替 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split + .split{margin-top:72px}
.split__media{position:relative;border-radius:18px;overflow:hidden;background:var(--brand-tint);box-shadow:var(--shadow-1)}
.split__media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:18px}
.split__body h2{font-size:27px;margin-bottom:16px}
.split__body p{color:var(--muted)}
.tick-list{margin-top:18px;display:grid;gap:12px}
.tick-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text)}
.tick-list li i{color:var(--teal);margin-top:5px}
.split--reverse .split__media{order:2}
.split--reverse .split__body{order:1}

/* ---------- 步骤卡 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;transition:box-shadow var(--ease),transform var(--ease);
}
.step-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.step-card__num{
  font-size:26px;color:var(--brand);font-variant-numeric:tabular-nums;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:14px;background:var(--brand-soft);margin-bottom:16px;
}
.step-card h3{font-size:19px;margin-bottom:8px}
.step-card p{font-size:15px;color:var(--muted);margin:0}

/* ---------- 提示条 ---------- */
.notice{
  background:var(--brand-tint);border:1px solid #D6E1F8;border-radius:var(--r-card);
  padding:28px 30px;display:grid;grid-template-columns:1fr 1fr;gap:18px 40px;
}
.notice__title{grid-column:1/-1;display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--brand-deep);margin-bottom:4px}
.notice__item{display:flex;gap:10px;font-size:15px;color:var(--muted)}
.notice__item i{color:var(--brand);margin-top:5px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.accordion{border:0;background:transparent}
.accordion .accordion-item{
  border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:12px;overflow:hidden;
}
.accordion .accordion-title{
  border:0;padding:18px 22px;font-size:17px;font-weight:600;color:var(--text);
  background:#fff;display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.accordion .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  order:2;font-size:14px;color:var(--brand);transition:transform var(--ease);
  position:static;margin:0;float:none;
}
.accordion .accordion-title[aria-expanded="true"]::before{content:"\f068"}
.accordion .accordion-title:hover{background:var(--brand-soft);color:var(--brand-deep)}
.accordion .accordion-content{border:0;background:#F7F9FD;padding:16px 22px 20px;color:var(--muted);font-size:15px;line-height:1.8}
.accordion .accordion-content p:last-child{margin-bottom:0}

/* ---------- CTA ---------- */
.cta-block{
  background:var(--brand-deep);border-radius:24px;padding:48px;
  display:grid;grid-template-columns:1.4fr auto;gap:32px;align-items:center;
}
.cta-block h2{color:#fff;font-size:28px;margin-bottom:12px}
.cta-block p{color:#C9D6F0;margin:0;max-width:620px}
.cta-block__actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-deep);color:#C9D6F0;padding:64px 0 24px;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-block{background:#1B3E8F}
.footer-brand strong{color:#fff;font-size:17px}
.site-footer p{color:#A8BBE4;font-size:14px;line-height:1.8;margin:0}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:14px;color:#A8BBE4}
.footer-col a{color:#C9D6F0;font-size:14px}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:center;gap:10px;flex-wrap:wrap;font-size:13px;color:#9BB0DA;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;
  background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);z-index:50;border:0;
}
.to-top:hover{background:var(--brand-deep);color:#fff}

/* ---------- 断点 ---------- */
@media (max-width:1279px){
  h1{font-size:32px}
  .sub-hero h1{font-size:31px}
  .split{gap:40px}
}
@media (max-width:1023px){
  .side-nav{display:none}
  .topbar{display:flex}
  .main-area{margin-left:0;width:100%;padding-top:60px}
  .sub-hero::after{display:none}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .split{grid-template-columns:1fr;gap:28px}
  .split + .split{margin-top:52px}
  .split--reverse .split__media{order:0}
  .split--reverse .split__body{order:0}
  .steps{grid-template-columns:repeat(2,1fr)}
  .notice{grid-template-columns:1fr;padding:24px}
  .cta-block{grid-template-columns:1fr;padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  h1{font-size:28px}
  h2{font-size:24px}
  .sub-hero{padding:36px 0 32px}
  .sub-hero h1{font-size:26px}
  .sub-hero__lead{font-size:16px}
  .hero-actions .btn{flex:1 1 auto}
  .section{padding:48px 0}
  .section-head{margin-bottom:26px}
  .cta-block h2{font-size:23px}
}
@media (max-width:519px){
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .hero-actions{flex-direction:column}
  .cta-block__actions{flex-direction:column}
  .badge{font-size:12px}
  .split__media img{aspect-ratio:16/10}
}

/* roulang page: category2 */
:root{
  --brand:#1449C8;
  --brand-deep:#0C2A72;
  --brand-soft:#E8EEFB;
  --brand-tint:#EDF2FD;
  --accent:#FF6A2B;
  --green:#12A594;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E3E8F0;
  --text:#1B2430;
  --muted:#5A6474;
  --weak:#8A94A6;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-1:0 2px 8px rgba(20,73,200,.06);
  --sh-2:0 10px 28px rgba(20,73,200,.12);
  --t:200ms ease;
  --nav-w:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--brand-deep);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul{padding-left:0;list-style:none;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;font-weight:700;}

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

/* ===== 左侧竖向导航 ===== */
.side-nav{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--nav-w);
  background:#fff;
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  align-items:center;
  padding:20px 0 24px;
  z-index:40;
}
.side-brand{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;}
.brand-block{
  width:56px;height:56px;border-radius:14px;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;letter-spacing:1px;
  box-shadow:var(--sh-1);
}
.side-brand__name{font-size:11px;line-height:1.35;color:var(--muted);letter-spacing:.2px;}
.side-nav__menu{
  margin-top:26px;
  display:flex;flex-direction:column;align-items:center;gap:6px;
  flex:1 1 auto;
}
.side-link{
  position:relative;
  width:78px;padding:10px 4px 8px;
  border-radius:12px;
  display:flex;flex-direction:column;align-items:center;gap:6px;
  font-size:12px;line-height:1.25;color:var(--muted);text-align:center;
  transition:background var(--t),color var(--t);
}
.side-link i{font-size:17px;}
.side-link:hover{background:var(--brand-tint);color:var(--brand);}
.side-link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.side-link.is-active::before{
  content:"";position:absolute;left:-9px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:2px;background:var(--brand);
}
.side-foot{display:flex;flex-direction:column;align-items:center;gap:8px;}
.side-foot__btn{
  width:46px;height:46px;border-radius:50%;
  background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;
  box-shadow:var(--sh-1);transition:transform var(--t),background var(--t);
}
.side-foot__btn:hover{background:#e85b1e;color:#fff;transform:scale(1.05);}
.side-foot__text{font-size:11px;color:var(--weak);}

/* ===== 顶部移动导航 ===== */
.topbar{
  display:none;
  position:fixed;left:0;right:0;top:0;height:60px;
  background:#fff;border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 16px;z-index:50;
}
.topbar__brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:15px;}
.topbar__brand .brand-block{width:36px;height:36px;border-radius:10px;font-size:13px;box-shadow:none;}
.menu-btn{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;
  color:var(--brand);font-size:17px;display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background var(--t),border-color var(--t);
}
.menu-btn:hover{background:var(--brand-tint);border-color:var(--brand-soft);}

.off-canvas .drawer-inner{padding:20px 18px 32px;}
.drawer-brand{display:flex;align-items:center;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--line);}
.drawer-brand strong{font-size:15px;color:var(--text);line-height:1.4;}
.drawer-nav{margin:18px 0 24px;display:flex;flex-direction:column;gap:8px;}
.drawer-nav a{
  display:flex;align-items:center;gap:10px;
  min-height:48px;padding:10px 14px;border-radius:12px;
  font-size:15px;color:var(--muted);background:#fff;border:1px solid var(--line);
}
.drawer-nav a i{color:var(--brand);width:18px;text-align:center;}
.drawer-nav a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;border-color:transparent;}
.drawer-cta{display:block;text-align:center;}

/* ===== 页面容器 ===== */
.page-wrap{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}
main{flex:1 0 auto;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:all var(--t);white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--brand-deep);color:#fff;transform:scale(1.02);}
.btn--ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn--ghost:hover{background:var(--brand-soft);color:var(--brand-deep);}
.btn--accent{background:var(--accent);color:#fff;}
.btn--accent:hover{background:#e85b1e;color:#fff;transform:scale(1.02);}
.btn--light{background:#fff;color:var(--brand-deep);}
.btn--light:hover{background:var(--brand-soft);color:var(--brand-deep);}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn--outline-light:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn--text{background:none;border:none;color:var(--brand);padding:0;min-height:0;font-weight:600;}
.btn--text:hover{text-decoration:underline;color:var(--brand-deep);}
.btn--block{display:flex;width:100%;}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1.4;
  background:var(--brand-soft);color:var(--brand);
}
.badge--accent{background:var(--accent);color:#fff;}
.badge--outline{background:#fff;color:var(--muted);border:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:999px;
  font-size:12px;color:var(--muted);background:var(--bg);border:1px solid var(--line);
}

/* ===== 面包屑 ===== */
.crumb{font-size:13px;color:var(--weak);display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:14px;}
.crumb a{color:var(--weak);}
.crumb a:hover{color:var(--brand);}
.crumb .current{color:var(--brand);font-weight:600;}

/* ===== Hero ===== */
.c-hero{
  background:#fff;
  border-bottom:1px solid var(--line);
  padding:44px 0 44px;
  position:relative;
  overflow:hidden;
}
.c-hero::after{
  content:"";position:absolute;top:0;right:0;width:38%;height:100%;
  background:var(--brand-tint);z-index:0;
}
.c-hero .container{position:relative;z-index:1;}
.c-hero h1{
  font-size:32px;font-weight:700;line-height:1.3;letter-spacing:.2px;
  margin-bottom:14px;max-width:640px;
}
.c-hero__sub{font-size:16px;line-height:1.75;color:var(--muted);max-width:620px;margin-bottom:18px;}
.c-hero__badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.c-hero__actions{display:flex;flex-wrap:wrap;gap:12px;}
.media{
  position:relative;overflow:hidden;border-radius:20px;background:var(--brand-tint);
  box-shadow:var(--sh-1);
}
.media--hero{aspect-ratio:16/10;}
.media img{width:100%;height:100%;object-fit:cover;border-radius:inherit;}
.media--cover{aspect-ratio:16/9;border-radius:var(--r-img);}

/* ===== 板块通用 ===== */
.section{padding:72px 0;}
.section--tight{padding-top:56px;}
.section--alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{margin-bottom:32px;max-width:720px;}
.section-head h2{font-size:27px;font-weight:700;line-height:1.35;margin-bottom:10px;}
.section-head p{font-size:15px;color:var(--muted);line-height:1.75;}

/* ===== 筛选标签行 ===== */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:999px;
  box-shadow:var(--sh-1);margin-bottom:28px;
}
.filter-bar__label{font-size:13px;color:var(--weak);margin-right:4px;}
.chip{
  display:inline-flex;align-items:center;
  padding:8px 16px;border-radius:999px;
  font-size:14px;color:var(--muted);background:var(--bg);
  border:1px solid var(--line);cursor:pointer;transition:all var(--t);
}
.chip:hover{background:var(--brand-tint);color:var(--brand);border-color:var(--brand-soft);}
.chip.is-on{background:var(--brand);color:#fff;border-color:var(--brand);font-weight:600;}

/* ===== 赛事卡片 ===== */
.event-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t);
}
.event-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.event-card__media{position:relative;display:block;aspect-ratio:16/9;background:var(--brand-tint);overflow:hidden;}
.event-card__media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease;}
.event-card:hover .event-card__media img{transform:scale(1.03);}
.event-card__time{
  position:absolute;left:14px;top:14px;
  padding:5px 12px;border-radius:999px;
  background:var(--accent);color:#fff;font-size:12px;font-weight:600;
}
.event-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.event-card__tags{display:flex;flex-wrap:wrap;gap:8px;}
.event-card__body h3{font-size:19px;font-weight:600;line-height:1.45;}
.event-card__body h3 a{color:var(--text);}
.event-card__body h3 a:hover{color:var(--brand);}
.event-card__body p{font-size:14.5px;line-height:1.7;color:var(--muted);}
.event-card__meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;
  font-size:13px;color:var(--weak);
}
.event-card__meta b{color:var(--brand);}

/* ===== 报名通道三档 ===== */
.pass-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.pass-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;display:flex;flex-direction:column;gap:14px;
  box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t);
}
.pass-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.pass-card--hot{border-color:var(--brand);background:var(--brand-tint);position:relative;}
.pass-card__flag{
  position:absolute;right:20px;top:-13px;
  padding:4px 12px;border-radius:999px;background:var(--accent);color:#fff;
  font-size:12px;font-weight:600;
}
.pass-card__ico{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.pass-card h3{font-size:19px;font-weight:600;}
.pass-card p{font-size:14.5px;line-height:1.7;color:var(--muted);}
.pass-list{display:flex;flex-direction:column;gap:8px;margin:2px 0 6px;}
.pass-list li{display:flex;gap:9px;font-size:14px;color:var(--muted);line-height:1.6;}
.pass-list i{color:var(--green);font-size:13px;margin-top:5px;}
.pass-card .btn{margin-top:auto;}

/* ===== 报名流程条 ===== */
.flow{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;
}
.flow-step{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 22px;position:relative;box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t);
}
.flow-step:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.flow-step__no{
  width:34px;height:34px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;font-size:15px;margin-bottom:14px;
}
.flow-step:last-child .flow-step__no{background:var(--accent);}
.flow-step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.flow-step p{font-size:14px;line-height:1.7;color:var(--muted);}

/* ===== 图文区块 ===== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.split h2{font-size:25px;font-weight:700;line-height:1.4;margin-bottom:14px;}
.split p{font-size:15.5px;line-height:1.8;color:var(--muted);margin-bottom:14px;}
.check-list{display:flex;flex-direction:column;gap:10px;margin:6px 0 4px;}
.check-list li{display:flex;gap:10px;font-size:15px;line-height:1.65;}
.check-list i{color:var(--green);margin-top:5px;font-size:13px;}
.stat-row{
  display:flex;gap:32px;flex-wrap:wrap;margin-top:20px;padding-top:20px;border-top:1px solid var(--line);
}
.stat-row div{display:flex;flex-direction:column;gap:2px;}
.stat-row strong{font-size:24px;color:var(--brand);}
.stat-row span{font-size:13px;color:var(--weak);}

/* ===== 问答双列 ===== */
.qa-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.qa-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 24px 22px;box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t);
}
.qa-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.qa-item h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:10px;display:flex;gap:10px;}
.qa-item h3 i{color:var(--brand);font-size:15px;margin-top:5px;}
.qa-item p{font-size:14.5px;line-height:1.75;color:var(--muted);}

/* ===== CTA ===== */
.cta-band{padding:0 0 72px;}
.cta-inner{
  background:var(--brand-deep);border-radius:24px;padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:26px;font-weight:700;color:#fff;line-height:1.4;margin-bottom:10px;}
.cta-inner p{font-size:15px;color:#C9D6F0;line-height:1.75;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ===== 页脚 ===== */
.site-footer{background:var(--brand-deep);color:#C9D6F0;padding:56px 0 22px;margin-top:auto;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.footer-brand .brand-block{width:44px;height:44px;border-radius:12px;font-size:14px;background:var(--brand);}
.footer-brand strong{color:#fff;font-size:16px;}
.site-footer p{font-size:14px;line-height:1.75;color:#C9D6F0;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#C9D6F0;font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col li{font-size:14px;line-height:1.6;}
.footer-bottom{
  margin-top:34px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:center;gap:10px;flex-wrap:wrap;font-size:13px;color:#9FB2D8;
}

/* ===== 返回顶部 ===== */
.to-top{
  position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:50%;
  background:var(--brand);color:#fff;border:none;
  display:flex;align-items:center;justify-content:center;font-size:16px;
  box-shadow:var(--sh-2);cursor:pointer;opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t),background var(--t);z-index:60;
}
.to-top.is-show{opacity:1;visibility:visible;}
.to-top:hover{background:var(--brand-deep);}

/* ===== 断点 ===== */
@media screen and (max-width:1280px){
  .container{padding:0 20px;}
  .c-hero h1{font-size:30px;}
  .flow{gap:16px;}
}

@media screen and (max-width:1023px){
  .side-nav{display:none;}
  .topbar{display:flex;}
  .page-wrap{margin-left:0;padding-top:60px;}
  .c-hero{padding:32px 0 36px;}
  .c-hero::after{display:none;}
  .c-hero h1{font-size:27px;}
  .c-hero .cell:last-child{margin-top:24px;}
  .section{padding:52px 0;}
  .section-head h2{font-size:23px;}
  .split{grid-template-columns:1fr;gap:26px;}
  .split .media{order:-1;}
  .pass-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr 1fr;}
  .qa-grid{grid-template-columns:1fr;}
  .cta-inner{padding:32px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
}

@media screen and (max-width:767px){
  .c-hero h1{font-size:24px;}
  .c-hero__sub{font-size:15px;}
  .c-hero__actions .btn{flex:1 1 100%;}
  .filter-bar{border-radius:16px;}
  .flow{grid-template-columns:1fr;}
  .stat-row{gap:22px;}
  .event-card__body{padding:18px 18px 20px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;}
}

@media screen and (max-width:479px){
  .container{padding:0 16px;}
  .c-hero h1{font-size:22px;}
  .section{padding:44px 0;}
  .section-head h2{font-size:21px;}
  .split h2{font-size:20px;}
  .pass-card{padding:22px 18px;}
  .qa-item{padding:20px 18px;}
  .cta-inner{border-radius:18px;padding:26px 20px;}
  .cta-inner h2{font-size:21px;}
  .topbar__brand{font-size:14px;}
}

/* roulang page: article */
:root{
  --primary:#1449C8;
  --primary-deep:#0C2A72;
  --primary-soft:#E8EEFB;
  --primary-tint:#EDF2FD;
  --accent:#FF6A2B;
  --success:#12A594;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E3E8F0;
  --text:#1B2430;
  --text-2:#5A6474;
  --text-3:#8A94A6;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 2px 8px rgba(20,73,200,.06);
  --shadow-2:0 10px 28px rgba(20,73,200,.12);
  --ease:.2s ease;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--primary);text-decoration:none;transition:color var(--ease),background-color var(--ease)}
a:hover{color:var(--primary-deep)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:1.35em}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 左侧竖向导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:96px;
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;
  padding:18px 8px 16px;z-index:70;overflow-y:auto;
}
.side-nav__brand{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center}
.brand-block{
  width:56px;height:56px;border-radius:14px;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;letter-spacing:1px;
}
.side-nav__brand small{font-size:11px;color:var(--text-3);line-height:1.3;letter-spacing:.5px}
.side-nav__menu{display:flex;flex-direction:column;gap:6px;width:100%;margin-top:22px;flex:1}
.side-link{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:6px;padding:11px 4px;min-height:64px;border-radius:12px;
  color:var(--text-2);font-size:12px;line-height:1.25;text-align:center;
}
.side-link i{font-size:17px}
.side-link:hover{background:var(--primary-tint);color:var(--primary)}
.side-link.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.side-link.is-active::before{
  content:"";position:absolute;left:-8px;top:50%;transform:translateY(-50%);
  width:3px;height:26px;border-radius:999px;background:var(--primary);
}
.side-nav__cta{width:100%;display:flex;flex-direction:column;align-items:center;gap:6px;margin-top:14px}
.side-nav__cta .round{
  width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:16px;
  transition:transform var(--ease),background-color var(--ease);
}
.side-nav__cta .round:hover{background:var(--primary-deep);color:#fff;transform:scale(1.05)}
.side-nav__cta span{font-size:11px;color:var(--text-3)}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{display:none}
.drawer,.drawer-mask{display:none}

@media (max-width:1023.98px){
  .side-nav{display:none}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:60px;padding:0 16px;
    background:#fff;border-bottom:1px solid var(--line);z-index:80;
  }
  .topbar__brand{display:flex;align-items:center;gap:10px;color:var(--text);min-width:0}
  .topbar__brand .brand-mini{
    width:34px;height:34px;border-radius:10px;background:var(--primary);color:#fff;
    display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex:none;
  }
  .topbar__brand strong{font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .topbar__toggle{
    width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;
    color:var(--primary);font-size:17px;display:flex;align-items:center;justify-content:center;flex:none;
  }
  .drawer-mask{display:block;position:fixed;inset:0;background:rgba(12,42,114,.42);opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:90}
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;width:80%;max-width:320px;
    background:#fff;z-index:100;transform:translateX(-102%);transition:transform .26s ease;
    padding:20px 16px;overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer__head{display:flex;align-items:center;gap:10px;padding-bottom:18px;border-bottom:1px solid var(--line)}
  .drawer__head .brand-block{width:44px;height:44px;border-radius:12px;font-size:13px}
  .drawer__head strong{font-size:15px;line-height:1.35}
  .drawer__nav{display:flex;flex-direction:column;gap:6px;margin-top:16px}
  .drawer__nav a{
    display:flex;align-items:center;gap:12px;min-height:48px;padding:0 14px;border-radius:12px;
    color:var(--text-2);font-size:15px;
  }
  .drawer__nav a i{width:20px;text-align:center;color:var(--primary);font-size:15px}
  .drawer__nav a.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600}
  .drawer__cta{
    margin-top:auto;padding-top:18px;
  }
  .drawer__cta .btn{width:100%}
}

/* ---------- 通用按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-deep);color:#fff;transform:scale(1.02)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#E85A1E;color:#fff;transform:scale(1.02)}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-deep)}
.btn-text{background:transparent;color:var(--primary);padding:0 6px;min-height:44px}
.btn-text:hover{color:var(--primary-deep);text-decoration:underline}

.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--primary-soft);color:var(--primary);
}
.chip-accent{background:var(--accent);color:#fff}

/* ---------- 主内容区 ---------- */
.app-main{margin-left:96px;min-height:100vh;padding-bottom:8px}
@media (max-width:1023.98px){
  .app-main{margin-left:0;padding-top:60px}
}

.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:26px 0 0;font-size:13px;color:var(--text-3);
}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--primary)}
.crumb i{font-size:10px;color:#C3CBD9}
.crumb .current{color:var(--primary);font-weight:600}

.article-head{padding:22px 0 26px;border-bottom:1px solid var(--line);max-width:860px}
.article-head h1{
  margin-top:16px;
  font-size:clamp(27px,3.2vw,36px);
  font-weight:700;line-height:1.3;letter-spacing:-.2px;
  max-width:820px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:18px;font-size:13.5px;color:var(--text-3);
}
.article-meta i{color:var(--primary);margin-right:6px;font-size:13px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#CBD4E3}

.article-layout{display:block;padding:34px 0 8px}
.article-col{max-width:760px}

.article-body{
  font-size:17px;line-height:1.8;color:var(--text);
  word-break:break-word;
}
.article-body p{margin:0 0 1em}
.article-body h2{
  position:relative;font-size:26px;font-weight:700;line-height:1.35;
  margin:32px 0 14px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:999px;background:var(--primary);
}
.article-body h3{font-size:20px;font-weight:600;line-height:1.45;margin:26px 0 12px;color:var(--text)}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;color:var(--primary-deep)}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.45em}
.article-body li{margin-bottom:.45em}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;border-left:3px solid var(--primary);
  background:var(--primary-soft);border-radius:0 12px 12px 0;color:#243A66;font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:14px auto;height:auto}
.article-body figure{margin:20px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(20,73,200,.28)}
.article-body a:hover{color:var(--primary-deep);border-bottom-color:var(--primary-deep)}
.article-body code{
  background:#EEF1F7;color:#243A66;border-radius:6px;padding:2px 6px;font-size:15px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body pre{
  background:#EEF1F7;border-radius:10px;padding:18px 20px;overflow-x:auto;
  font-size:14.5px;line-height:1.7;margin:20px 0;color:#243A66;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body pre code{background:transparent;padding:0}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--primary-tint);color:var(--primary-deep);font-weight:600}
.article-body hr{border:none;border-top:1px solid var(--line);margin:28px 0}

.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:38px;padding-top:24px;border-top:1px solid var(--line);
}
.tag-row .label{font-size:13px;color:var(--text-3);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--text-2);font-size:13px;
  transition:border-color var(--ease),color var(--ease),background-color var(--ease);
}
.tag:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-tint)}
.share-row{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:22px;padding:18px 20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);font-size:13.5px;color:var(--text-2);
}
.share-row .acts{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--primary);display:inline-flex;align-items:center;justify-content:center;
  transition:background-color var(--ease),border-color var(--ease),transform var(--ease);
}
.icon-btn:hover{background:var(--primary-soft);border-color:var(--primary);transform:translateY(-2px)}

/* ---------- 空态 ---------- */
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:56px 28px;text-align:center;max-width:560px;
}
.empty-state i{font-size:34px;color:#C3CBD9}
.empty-state h3{font-size:19px;font-weight:600;margin:16px 0 8px;color:var(--text)}
.empty-state p{font-size:14.5px;color:var(--text-3);margin-bottom:20px}

/* ---------- 相关推荐 ---------- */
.related{padding:64px 0 8px;margin-top:56px;border-top:1px solid var(--line)}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:24px;flex-wrap:wrap}
.section-head h2{font-size:26px;font-weight:700;line-height:1.35}
.section-head span{font-size:14px;color:var(--text-3)}
.rel-card{
  display:flex;flex-direction:column;height:100%;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D2DDF2}
.rel-card .thumb{position:relative;aspect-ratio:16/9;background:var(--primary-tint);overflow:hidden}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover}
.rel-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-card h3{font-size:18px;font-weight:600;line-height:1.5;color:var(--text)}
.rel-card:hover h3{color:var(--primary)}
.rel-card .meta{margin-top:auto;font-size:13px;color:var(--text-3);display:flex;gap:12px;flex-wrap:wrap}
.rel-card .desc{font-size:14.5px;line-height:1.7;color:var(--text-2)}

.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  border:none;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease),background-color var(--ease);
  z-index:60;
}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{background:var(--primary-deep)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--primary-deep);color:#C9D6F0;margin-top:72px;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-block{width:44px;height:44px;border-radius:12px;font-size:13px}
.footer-brand strong{color:#fff;font-size:17px;line-height:1.4}
.site-footer p{font-size:14px;line-height:1.8;color:#C9D6F0;max-width:420px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px;font-size:14px}
.site-footer a{color:#C9D6F0}
.site-footer a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(201,214,240,.18);margin-top:44px;padding-top:22px;
  display:flex;justify-content:center;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:#93A6D0;
}

@media (max-width:1279.98px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:span 3}
  .footer-col:last-child ul{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1023.98px){
  .crumb{padding-top:20px}
  .article-head{padding:18px 0 22px}
  .article-layout{padding:26px 0 8px}
  .related{padding-top:48px;margin-top:40px}
  .to-top{right:16px;bottom:18px}
}
@media (max-width:767.98px){
  .container{padding:0 18px}
  .article-body{font-size:16px;line-height:1.8}
  .article-body h2{font-size:22px;margin-top:28px}
  .article-body h3{font-size:18.5px}
  .section-head h2{font-size:22px}
  .share-row{flex-direction:column;align-items:flex-start}
  .site-footer{padding:48px 0 24px;margin-top:56px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-col:last-child{grid-column:span 2}
  .footer-col:last-child ul{grid-template-columns:1fr}
}
@media (max-width:519.98px){
  .crumb{font-size:12.5px}
  .article-meta{gap:10px;font-size:13px}
  .footer-grid{grid-template-columns:1fr}
  .footer-col:last-child{grid-column:span 1}
  .btn{width:100%}
  .side-nav__cta .round,.icon-btn{width:44px}
}

/* roulang page: category3 */
:root{
  --primary:#1449C8;
  --primary-dark:#0C2A72;
  --primary-light:#E8EEFB;
  --primary-soft:#EDF2FD;
  --accent:#FF6A2B;
  --teal:#12A594;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E3E8F0;
  --text:#1B2430;
  --text-2:#5A6474;
  --text-3:#8A94A6;
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(20,73,200,.06);
  --sh-2:0 10px 28px rgba(20,73,200,.12);
  --ease:200ms ease;
  --f:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--f);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color var(--ease),opacity var(--ease)}
a:hover{color:var(--primary-dark)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
table{border-collapse:collapse}

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

/* ---------- 侧栏导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;width:96px;height:100vh;
  background:var(--card);border-right:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;
  padding:20px 8px;z-index:80;
}
.side-brand{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center}
.brand-block{
  width:56px;height:56px;border-radius:14px;background:var(--primary);
  color:#fff;font-weight:700;font-size:17px;letter-spacing:1px;
  display:flex;align-items:center;justify-content:center;
}
.side-brand__text{font-size:11px;line-height:1.35;color:var(--text-3);letter-spacing:.5px}
.side-nav__menu{display:flex;flex-direction:column;gap:6px;width:100%;margin-top:26px;flex:1}
.side-link{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:12px 4px;border-radius:12px;color:var(--text-2);font-size:12px;line-height:1.3;
  transition:background var(--ease),color var(--ease);
}
.side-link i{font-size:17px;color:var(--text-3);transition:color var(--ease)}
.side-link:hover{background:#F4F7FE;color:var(--primary)}
.side-link:hover i{color:var(--primary)}
.side-link.is-active{background:var(--primary-light);color:var(--primary);font-weight:600}
.side-link.is-active i{color:var(--primary)}
.side-link.is-active::before{
  content:"";position:absolute;left:-8px;top:50%;transform:translateY(-50%);
  width:3px;height:26px;border-radius:2px;background:var(--primary);
}
.side-foot{display:flex;flex-direction:column;align-items:center;gap:8px;padding-top:16px;border-top:1px solid var(--line);width:100%}
.side-foot__btn{
  width:44px;height:44px;border-radius:50%;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:16px;
  transition:transform var(--ease),background var(--ease);
}
.side-foot__btn:hover{background:#E85A1C;color:#fff;transform:scale(1.04)}
.side-foot__text{font-size:11px;color:var(--text-3)}

/* ---------- 移动端顶栏 ---------- */
.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:90;
  background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.mobile-topbar__brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:15px}
.mobile-topbar__brand .brand-block{width:36px;height:36px;border-radius:10px;font-size:13px}
.hamburger{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--primary);border-radius:2px}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(12,42,114,.4);opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);z-index:95;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;left:0;height:100vh;width:80%;max-width:320px;background:#fff;z-index:100;
  transform:translateX(-102%);transition:transform 240ms ease;display:flex;flex-direction:column;
  padding:20px;box-shadow:var(--sh-2);
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--text-2);font-size:16px;cursor:pointer;
}
.drawer-menu{display:flex;flex-direction:column;gap:6px;flex:1}
.drawer-menu a{
  display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:12px;
  color:var(--text-2);font-size:15px;font-weight:500;
}
.drawer-menu a i{width:20px;text-align:center;color:var(--text-3)}
.drawer-menu a:hover{background:#F4F7FE;color:var(--primary)}
.drawer-menu a.is-active{background:var(--primary-light);color:var(--primary);font-weight:600}
.drawer-menu a.is-active i{color:var(--primary)}

/* ---------- 页面骨架 ---------- */
.page-shell{margin-left:96px;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
section{padding:56px 0}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{font-size:28px;font-weight:700;line-height:1.35;letter-spacing:.2px}
.section-head p{margin-top:12px;color:var(--text-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:var(--r-pill);
  background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:600;margin-bottom:14px;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--primary);font-weight:600}
.breadcrumb i{font-size:10px;color:var(--text-3)}

/* ---------- 页头 ---------- */
.page-hero{padding:40px 0 48px;background:var(--card);border-bottom:1px solid var(--line)}
.page-hero h1{font-size:32px;line-height:1.35;font-weight:700;letter-spacing:.2px;max-width:720px}
.page-hero .lead{margin-top:14px;color:var(--text-2);font-size:16.5px;max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.hero-media{position:relative;border-radius:20px;overflow:hidden;background:var(--primary-soft);box-shadow:var(--sh-1);aspect-ratio:16/10}
.hero-media img{width:100%;height:100%;object-fit:cover;border-radius:20px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#E85A1C;color:#fff;transform:scale(1.02)}
.btn-solid{background:var(--primary);color:#fff}
.btn-solid:hover{background:var(--primary-dark);color:#fff;transform:scale(1.02)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark)}
.btn-ghost{background:transparent;color:var(--primary);padding:0 6px}
.btn-ghost:hover{color:var(--primary-dark);text-decoration:underline}
.btn-white-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-white-outline:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 12px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;line-height:1.7}
.badge-soft{background:var(--primary-light);color:var(--primary)}
.badge-accent{background:var(--accent);color:#fff}
.badge-line{background:#fff;color:var(--text-2);border:1px solid var(--line)}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  padding:7px 16px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;
  font-size:14px;color:var(--text-2);transition:all var(--ease);
}
.chip:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft)}
.chip.is-active{background:var(--primary);border-color:var(--primary);color:#fff}

/* ---------- 说明条 ---------- */
.note-bar{
  display:flex;align-items:flex-start;gap:14px;background:var(--primary-soft);
  border:1px solid #D6E1F8;border-radius:14px;padding:16px 20px;margin-bottom:26px;
  color:var(--text-2);font-size:15px;line-height:1.7;
}
.note-bar i{color:var(--primary);font-size:17px;margin-top:3px}

/* ---------- 对比矩阵 ---------- */
.compare-wrap{
  overflow-x:auto;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);-webkit-overflow-scrolling:touch;
}
.compare-table{width:100%;min-width:860px;font-size:15px}
.compare-table th,.compare-table td{
  padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle;
}
.compare-table thead th{
  background:#F9FBFF;font-weight:600;color:var(--text);font-size:15px;white-space:nowrap;
}
.compare-table tbody th{
  position:sticky;left:0;z-index:2;background:#fff;font-weight:600;color:var(--text);
  width:210px;min-width:210px;box-shadow:1px 0 0 var(--line);
}
.compare-table thead th:first-child{
  position:sticky;left:0;z-index:3;box-shadow:1px 0 0 var(--line);
}
.compare-table tbody tr:hover th{background:#F7FAFF}
.compare-table tbody tr:hover td{background:#FBFCFE}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:0}
.col-featured{background:#F3F7FF !important;border-left:1px solid #D6E1F8;border-right:1px solid #D6E1F8}
th.col-featured{color:var(--primary)}
.head-title{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:700;color:var(--text)}
.head-price{display:block;margin-top:4px;font-size:12.5px;color:var(--text-3);font-weight:400}
.price-big{
  font-size:24px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum";letter-spacing:-.5px;
}
.price-unit{font-size:12.5px;color:var(--text-3);font-weight:400;margin-left:4px}
.mark{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;margin-right:8px;font-size:11px;flex:none}
.mark.yes{background:rgba(18,165,148,.12);color:var(--teal)}
.mark.no{background:#EEF1F6;color:var(--text-3)}
.cell-flex{display:flex;align-items:center;color:var(--text-2)}
.cell-flex strong{color:var(--text);font-weight:600}

/* 移动端票种卡 */
.plan-cards{display:none;gap:18px;flex-direction:column}
.plan-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);position:relative;
}
.plan-card.is-featured{border-color:var(--primary);background:#F7FAFF}
.plan-card h3{font-size:19px;font-weight:700;display:flex;align-items:center;justify-content:space-between;gap:10px}
.plan-card .plan-price{margin:8px 0 14px;font-size:26px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}
.plan-card ul{display:flex;flex-direction:column;gap:10px}
.plan-card li{display:flex;align-items:flex-start;font-size:15px;color:var(--text-2);line-height:1.65}

/* ---------- 权益分组 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.scene-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);transition:box-shadow var(--ease),transform var(--ease);
}
.scene-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.scene-card__icon{
  width:46px;height:46px;border-radius:14px;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:16px;
}
.scene-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.scene-card p{font-size:15px;color:var(--text-2);line-height:1.75;margin-bottom:16px}
.scene-card .chip-row{gap:8px}
.scene-card .chip{font-size:13px;padding:5px 12px;background:#F7F9FD}

/* ---------- 决策提示条 ---------- */
.tips-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
}
.tip-item{padding:26px;border-right:1px solid var(--line)}
.tip-item:last-child{border-right:0}
.tip-item__num{
  font-size:13px;font-weight:700;color:var(--accent);letter-spacing:1px;
  font-variant-numeric:tabular-nums;margin-bottom:10px;display:block;
}
.tip-item h3{font-size:17px;font-weight:600;margin-bottom:8px}
.tip-item p{font-size:14.5px;color:var(--text-2);line-height:1.7}

/* ---------- FAQ Accordion ---------- */
.accordion-box{max-width:900px}
.accordion{background:transparent;border:0;margin:0}
.accordion .accordion-item{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.accordion .accordion-item:hover{border-color:#CFDBF3}
.accordion .accordion-item.is-active{border-color:var(--primary);box-shadow:var(--sh-1)}
.accordion .accordion-title{
  display:block;position:relative;padding:18px 56px 18px 20px;background:#fff;border:0;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.55;
  transition:color var(--ease),background var(--ease);
}
.accordion .accordion-title:hover{color:var(--primary);background:#FBFCFE}
.accordion .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--primary);transition:transform var(--ease);
}
.accordion .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(45deg)}
.accordion .accordion-content{padding:0 20px 20px;background:#F7F9FD;border:0;color:var(--text-2);font-size:15px;line-height:1.8}
.accordion .accordion-content p{margin:0 0 8px}
.accordion .accordion-content p:last-child{margin-bottom:0}

/* ---------- CTA ---------- */
.cta-block{
  background:var(--primary-dark);border-radius:24px;padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-block h2{color:#fff;font-size:28px;font-weight:700;line-height:1.35}
.cta-block p{color:#C9D6F0;font-size:15.5px;margin-top:10px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--primary-dark);color:#C9D6F0;padding:64px 0 0;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer-brand .brand-block{width:44px;height:44px;border-radius:12px;font-size:14px}
.footer-brand strong{color:#fff;font-size:16px;font-weight:700;line-height:1.4}
.site-footer p{font-size:14.5px;line-height:1.8;color:#AFC3E8;max-width:360px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:#C9D6F0;font-size:14.5px}
.footer-col a:hover{color:#fff}
.footer-col li{font-size:14.5px;color:#AFC3E8;line-height:1.7}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:center;gap:10px;
  font-size:13px;color:#9FB4DC;text-align:center;flex-wrap:wrap;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transition:all var(--ease);z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible}
.to-top:hover{background:var(--primary-dark);color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 20px}
  .footer-grid{gap:28px}
}
@media (max-width:1023px){
  .side-nav{display:none}
  .mobile-topbar{display:flex}
  .page-shell{margin-left:0;padding-top:60px}
  .page-hero{padding:32px 0 40px}
  .scene-grid{grid-template-columns:1fr 1fr}
  .tips-row{grid-template-columns:1fr}
  .tip-item{border-right:0;border-bottom:1px solid var(--line)}
  .tip-item:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  section{padding:48px 0}
  .container{padding:0 16px}
  .page-hero h1{font-size:27px}
  .page-hero .lead{font-size:15.5px}
  .section-head h2{font-size:23px}
  .compare-wrap{display:none}
  .plan-cards{display:flex}
  .scene-grid{grid-template-columns:1fr}
  .cta-block{padding:32px 24px;border-radius:20px}
  .cta-block h2{font-size:23px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1;min-width:140px}
  .accordion .accordion-title{font-size:15.5px;padding:16px 48px 16px 16px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .hero-media{aspect-ratio:16/9}
}
@media (max-width:479px){
  .page-hero h1{font-size:24px}
  .hero-actions .btn{width:100%}
  .price-big{font-size:21px}
  .to-top{right:16px;bottom:16px}
}

/* roulang page: category4 */
:root{
  --brand:#1449C8;
  --brand-deep:#0C2A72;
  --brand-soft:#E8EEFB;
  --brand-tint:#EDF2FD;
  --accent:#FF6A2B;
  --accent-deep:#E85A1C;
  --green:#12A594;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E3E8F0;
  --text:#1B2430;
  --text-2:#5A6474;
  --text-3:#8A94A6;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-1:0 2px 8px rgba(20,73,200,.06);
  --shadow-2:0 10px 28px rgba(20,73,200,.12);
  --ease:200ms ease;
  --fs-h1:34px;
  --fs-h2:26px;
  --fs-h3:20px;
  --fs-body:16.5px;
  --fs-sm:14px;
  --fs-xs:13px;
  --side-w:96px;
  --nav-h:60px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:88px;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:var(--fs-body);
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-deep);}
a:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.button,.button:hover{text-decoration:none;}
.button{background:none;border:0;padding:0;margin:0;color:inherit;font-size:inherit;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.num{font-variant-numeric:tabular-nums;font-weight:700;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 左侧竖向导航 ============ */
.side-nav{
  position:fixed;left:0;top:0;bottom:0;width:var(--side-w);
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;
  padding:20px 0 18px;z-index:30;
}
.side-nav__brand{display:flex;flex-direction:column;align-items:center;text-decoration:none;}
.brand-block{
  width:56px;height:56px;border-radius:14px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px;
  letter-spacing:.5px;
}
.side-nav__name{font-size:11px;line-height:1.3;color:var(--text-2);text-align:center;margin-top:8px;}
.side-nav__menu{width:100%;padding:0 8px;margin-top:26px;display:flex;flex-direction:column;gap:6px;flex:1;}
.side-link{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:6px;min-height:64px;padding:10px 4px;border-radius:12px;
  color:var(--text-2);font-size:12px;line-height:1.2;text-align:center;
  transition:background var(--ease),color var(--ease);
}
.side-link i{font-size:17px;}
.side-link:hover{background:var(--brand-tint);color:var(--brand);}
.side-link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.side-link.is-active::before{content:"";position:absolute;left:-8px;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--brand);}
.side-nav__foot{display:flex;flex-direction:column;align-items:center;gap:6px;padding-top:10px;}
.side-cta{
  width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:16px;
  transition:background var(--ease),transform var(--ease);
}
.side-cta:hover{background:var(--brand-deep);color:#fff;transform:scale(1.04);}
.side-nav__foot span{font-size:11px;color:var(--text-3);}

/* ============ 移动端顶部栏 + 抽屉 ============ */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:var(--nav-h);
  background:#fff;border-bottom:1px solid var(--line);z-index:40;
  align-items:center;justify-content:space-between;padding:0 16px;
}
.mobile-bar__brand{display:flex;align-items:center;gap:10px;min-width:0;}
.mobile-bar__brand .brand-block{width:36px;height:36px;border-radius:10px;font-size:13px;}
.mobile-bar__brand strong{font-size:15px;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.hamburger{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--brand);font-size:17px;display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background var(--ease);
}
.hamburger:hover{background:var(--brand-soft);}
.drawer{width:80%;max-width:340px;background:#fff;border-right:1px solid var(--line);}
.drawer__head{display:flex;align-items:center;gap:12px;padding:20px 20px 16px;border-bottom:1px solid var(--line);}
.drawer__head .brand-block{width:44px;height:44px;border-radius:12px;font-size:14px;}
.drawer__head strong{font-size:14.5px;line-height:1.4;}
.drawer__nav{padding:14px 12px;display:flex;flex-direction:column;gap:4px;}
.drawer__nav a{
  display:flex;align-items:center;gap:12px;min-height:48px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;transition:background var(--ease),color var(--ease);
}
.drawer__nav a i{width:18px;text-align:center;color:var(--text-3);}
.drawer__nav a:hover{background:var(--brand-tint);color:var(--brand);}
.drawer__nav a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.drawer__nav a.is-active i{color:var(--brand);}
.drawer__foot{padding:16px 20px 24px;border-top:1px solid var(--line);margin-top:8px;}

/* ============ 页面骨架 ============ */
.page-body{margin-left:var(--side-w);}
.main-area{padding-bottom:8px;}

/* ============ 面包屑与页头 ============ */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:var(--fs-xs);color:var(--text-3);padding-top:30px;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C6CEDC;}
.breadcrumb .is-current{color:var(--brand);font-weight:500;}

.page-head{padding:18px 0 26px;border-bottom:1px solid var(--line);}
.page-head__label{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.page-title{font-size:var(--fs-h1);line-height:1.3;letter-spacing:-.4px;max-width:880px;}
.page-lead{margin-top:14px;max-width:780px;color:var(--text-2);font-size:16.5px;}
.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.pill{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;
  border-radius:var(--radius-pill);background:#fff;border:1px solid var(--line);
  font-size:var(--fs-xs);color:var(--text-2);
}
.pill i{color:var(--brand);font-size:12px;}

/* ============ 双栏文档布局 ============ */
.doc-layout{margin-top:32px;}
.anchor-nav{
  position:sticky;top:24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:20px 18px;box-shadow:var(--shadow-1);
}
.anchor-nav h2{font-size:14px;color:var(--text-3);font-weight:600;letter-spacing:.5px;margin-bottom:12px;}
.anchor-nav ol{display:flex;flex-direction:column;gap:2px;}
.anchor-nav a{
  display:flex;align-items:center;gap:10px;min-height:40px;padding:0 10px;border-radius:8px;
  font-size:14px;color:var(--text-2);transition:background var(--ease),color var(--ease);
}
.anchor-nav a:hover{background:var(--brand-tint);color:var(--brand);}
.anchor-nav a .idx{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.anchor-note{
  margin-top:14px;padding:12px 14px;border-radius:10px;background:var(--brand-tint);
  font-size:12.5px;line-height:1.65;color:var(--brand-deep);
}

.doc-body{min-width:0;}

/* ============ 通用板块 ============ */
.section{margin-bottom:36px;scroll-margin-top:88px;}
.section-head{margin-bottom:18px;}
.section-title{font-size:22px;line-height:1.4;display:flex;align-items:center;gap:10px;}
.section-title::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--brand);}
.section-desc{margin-top:8px;color:var(--text-2);font-size:15px;max-width:760px;}
.card-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 28px;box-shadow:var(--shadow-1);
}

/* ============ 步骤卡 ============ */
.step-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 24px;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D5DEF2;}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  font-size:16px;font-variant-numeric:tabular-nums;font-weight:700;
}
.step-card h3{font-size:17.5px;font-weight:600;margin-top:14px;line-height:1.5;}
.step-card p{margin-top:8px;color:var(--text-2);font-size:15px;line-height:1.75;}

/* ============ 图文块 ============ */
.split{display:grid;grid-template-columns:1fr 380px;gap:32px;align-items:center;}
.split__media{position:relative;border-radius:18px;overflow:hidden;background:var(--brand-tint);aspect-ratio:16/11;}
.split__media img{width:100%;height:100%;object-fit:cover;}
.rule-list{margin-top:16px;display:flex;flex-direction:column;gap:12px;}
.rule-list li{display:flex;gap:12px;font-size:15px;line-height:1.75;color:var(--text-2);}
.rule-list li i{color:var(--brand);font-size:13px;margin-top:6px;flex-shrink:0;}
.rule-list li b{color:var(--text);font-weight:600;}
.notice{
  margin-top:20px;display:flex;gap:12px;padding:16px 18px;border-radius:12px;
  background:var(--brand-tint);border-left:3px solid var(--brand);font-size:14.5px;color:var(--brand-deep);line-height:1.7;
}
.notice i{margin-top:4px;flex-shrink:0;}

/* ============ 要点卡 ============ */
.point-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.point-card{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;
  transition:transform var(--ease),box-shadow var(--ease);
}
.point-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.point-card h3{font-size:16px;font-weight:600;display:flex;align-items:center;gap:8px;}
.point-card h3 i{color:var(--green);font-size:14px;}
.point-card p{margin-top:8px;color:var(--text-2);font-size:14.5px;line-height:1.75;}

/* ============ 横向流程条 ============ */
.flow-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:6px;}
.flow-item{position:relative;padding-top:48px;}
.flow-item::before{
  content:"";position:absolute;top:19px;left:40px;right:-18px;height:2px;background:var(--brand-soft);
}
.flow-item:last-child::before{display:none;}
.flow-dot{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;background:#fff;
  border:2px solid var(--brand);color:var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
}
.flow-item h3{font-size:15.5px;font-weight:600;}
.flow-item p{margin-top:6px;font-size:14px;color:var(--text-2);line-height:1.7;}

/* ============ 退改列表 ============ */
.rule-table{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;}
.rule-row{
  display:flex;gap:20px;align-items:flex-start;padding:18px 24px;border-bottom:1px solid var(--line);
  transition:background var(--ease);
}
.rule-row:last-child{border-bottom:0;}
.rule-row:hover{background:#FAFCFF;}
.rule-row__time{flex:0 0 150px;font-size:14px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.rule-row__body h3{font-size:15.5px;font-weight:600;}
.rule-row__body p{margin-top:6px;font-size:14.5px;color:var(--text-2);line-height:1.7;}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:500;background:var(--brand-soft);color:var(--brand);
}
.badge--accent{background:var(--accent);color:#fff;}
.badge--green{background:rgba(18,165,148,.12);color:var(--green);}
.badge--line{background:#fff;border:1px solid var(--line);color:var(--text-2);}

/* ============ 双列问答 ============ */
.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.qa-card{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.qa-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D5DEF2;}
.qa-card h3{font-size:16px;font-weight:600;display:flex;gap:10px;line-height:1.55;}
.qa-card h3 i{color:var(--accent);font-size:13px;margin-top:5px;flex-shrink:0;}
.qa-card p{margin-top:8px;font-size:14.5px;color:var(--text-2);line-height:1.75;}

/* ============ 表单 ============ */
.form-panel{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow-1);
}
.field{margin-bottom:18px;}
.field>label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--text);}
.field .req{color:var(--accent);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;height:46px;border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:0 14px;font-size:15px;font-family:inherit;color:var(--text);background:#fff;
  transition:border-color var(--ease),box-shadow var(--ease);
  -webkit-appearance:none;appearance:none;
}
.field select{
  background-image:url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%235A6474' d='M8 11L2.6 5.6l1.1-1.1L8 8.8l4.3-4.3 1.1 1.1z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:14px;padding-right:38px;
}
.field textarea{height:128px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);
}
.field .hint{display:block;margin-top:6px;font-size:12.5px;color:var(--text-3);}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:6px;}
.privacy{font-size:12.5px;color:var(--text-3);max-width:560px;line-height:1.65;}
.form-msg{
  display:none;margin-top:16px;padding:12px 16px;border-radius:10px;font-size:14px;
  background:rgba(18,165,148,.1);color:#0D7A6D;border:1px solid rgba(18,165,148,.28);
}
.form-msg.is-show{display:block;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),transform var(--ease),border-color var(--ease);
  text-align:center;white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#fff;}
.btn--primary:hover{background:var(--brand-deep);color:#fff;transform:scale(1.02);}
.btn--accent{background:var(--accent);color:#fff;}
.btn--accent:hover{background:var(--accent-deep);color:#fff;transform:scale(1.02);}
.btn--ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn--ghost:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:var(--brand-deep);}
.btn--light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn--light:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.btn--block{width:100%;}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.btn--accent:focus-visible,.btn--light:focus-visible{outline-color:#fff;}

/* ============ CTA 深色带 ============ */
.cta-band{
  background:var(--brand-deep);border-radius:var(--radius-lg);padding:44px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  margin:8px 0 64px;
}
.cta-band h2{color:#fff;font-size:24px;line-height:1.4;max-width:560px;}
.cta-band p{margin-top:10px;color:#C9D6F0;font-size:15px;max-width:560px;line-height:1.7;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-deep);color:#C9D6F0;padding:56px 0 24px;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.footer-brand .brand-block{width:44px;height:44px;border-radius:12px;font-size:14px;background:#fff;color:var(--brand-deep);}
.footer-brand strong{color:#fff;font-size:16px;}
.site-footer p{font-size:14px;line-height:1.8;color:#B7C7E6;max-width:420px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:#B7C7E6;line-height:1.6;}
.footer-col a{color:#C9D6F0;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px;
  font-size:13px;color:#9FB2D8;text-align:center;
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:#fff;border:1px solid var(--line);color:var(--brand);font-size:15px;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:var(--shadow-2);z-index:35;opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease),background var(--ease),color var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{background:var(--brand);color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .split{grid-template-columns:1fr 330px;gap:26px;}
}
@media (max-width:1023px){
  .side-nav{display:none;}
  .mobile-bar{display:flex;}
  .page-body{margin-left:0;padding-top:var(--nav-h);}
  .container{padding:0 24px;}
  .breadcrumb{padding-top:22px;}
  .page-head{padding:14px 0 22px;}
  .page-title{font-size:30px;}
  .doc-layout{margin-top:24px;}
  .anchor-nav{position:static;margin-bottom:24px;}
  .anchor-nav ol{flex-direction:row;flex-wrap:wrap;gap:6px;}
  .anchor-nav a{background:var(--brand-tint);min-height:36px;padding:0 12px;font-size:13px;}
  .anchor-note{display:none;}
  .flow-strip{grid-template-columns:repeat(2,1fr);gap:24px;}
  .flow-item:nth-child(2)::before{display:none;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .page-title{font-size:26px;}
  .page-lead{font-size:15.5px;}
  .step-grid,.point-grid,.qa-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:20px;}
  .split__media{order:-1;aspect-ratio:16/10;}
  .card-panel,.form-panel{padding:22px 20px;}
  .cta-band{padding:28px 22px;border-radius:18px;}
  .cta-band h2{font-size:20px;}
  .rule-row{flex-direction:column;gap:8px;padding:16px 18px;}
  .rule-row__time{flex:none;}
  .section-title{font-size:19px;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:520px){
  .page-title{font-size:23px;}
  .flow-strip{grid-template-columns:1fr;}
  .flow-item{padding-top:44px;}
  .flow-item::before{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band__actions .btn{width:100%;}
  .pill{height:28px;padding:0 11px;}
}