/* roulang page: index */
:root{
  --c-primary:#1F6BF2;
  --c-primary-dark:#144FC0;
  --c-primary-soft:#EAF1FF;
  --c-accent:#FF7A2F;
  --c-accent-dark:#E8671F;
  --c-accent-soft:#FFF1E8;
  --c-tertiary:#14B8A6;
  --c-tertiary-soft:#E6F8F5;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-surface-2:#FBFCFE;
  --c-line:#E6EBF5;
  --c-line-strong:#D6DEEE;
  --c-text:#101828;
  --c-text-2:#5A6B85;
  --c-text-3:#8A99B0;
  --c-warn:#E5484D;
  --c-ok:#12A594;
  --sh-1:0 1px 2px rgba(16,24,40,.04), 0 8px 24px rgba(31,107,242,.08);
  --sh-2:0 14px 36px rgba(31,107,242,.16);
  --sh-3:0 -6px 20px rgba(16,24,40,.08);
  --r-s:10px;
  --r-m:14px;
  --r-l:18px;
  --r-xl:24px;
  --r-full:999px;
  --container:1200px;
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}

/* ---------- 容器与板块 ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-alt{background:var(--c-surface)}
.divider{height:1px;background:var(--c-line);border:0;margin:0}

.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:36px;flex-wrap:wrap;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--c-primary);
  margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--c-primary)}
.section-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3}
.section-desc{margin-top:10px;font-size:15px;color:var(--c-text-2);max-width:640px}
.text-link{
  font-size:14px;font-weight:600;color:var(--c-primary);
  display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease;
}
.text-link:hover{gap:10px}
.text-link svg{width:14px;height:14px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-full);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(31,107,242,.22)}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(31,107,242,.28)}
.btn-primary:active{transform:translateY(1px);background:var(--c-primary-dark)}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(255,122,47,.24)}
.btn-accent:hover{background:var(--c-accent-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,122,47,.3)}
.btn-accent:active{transform:translateY(1px)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:rgba(31,107,242,.4)}
.btn-outline:hover{background:var(--c-primary-soft);border-color:var(--c-primary);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0 8px}
.btn-ghost:hover{color:var(--c-primary-dark)}
.btn-block{width:100%}
.btn-lg{height:50px;padding:0 28px;font-size:16px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn-icon{
  width:40px;height:40px;padding:0;border-radius:var(--r-full);
  background:#fff;border:1px solid var(--c-line);color:var(--c-text-2);
  display:inline-flex;align-items:center;justify-content:center;
}
.btn-icon:hover{border-color:rgba(31,107,242,.4);color:var(--c-primary)}

/* ---------- 徽章与标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:var(--r-full);
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1;
}
.badge-primary{background:var(--c-primary-soft);color:var(--c-primary)}
.badge-accent{background:var(--c-accent-soft);color:var(--c-accent-dark)}
.badge-ok{background:var(--c-tertiary-soft);color:#0E8F82}
.dot{width:6px;height:6px;border-radius:50%;background:currentColor}

.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:var(--r-full);background:var(--c-surface-2);
  border:1px solid var(--c-line);font-size:13px;color:var(--c-text-2);
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.tag:hover{border-color:rgba(31,107,242,.35);color:var(--c-primary);background:var(--c-primary-soft)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .24s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:16px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:26px;height:26px;border-radius:8px;background:var(--c-primary);
  display:grid;place-items:center;color:#fff;flex-shrink:0;
  box-shadow:0 4px 10px rgba(31,107,242,.28);
}
.brand-mark svg{width:14px;height:14px}
.brand-name{font-size:17px;font-weight:800;color:var(--c-primary);letter-spacing:-.01em;white-space:nowrap}
.nav-channels{display:flex;align-items:center;gap:2px;margin-left:10px}
.nav-channels a{
  position:relative;padding:10px 12px;border-radius:10px;
  font-size:15px;color:var(--c-text-2);
  transition:color .18s ease,background-color .18s ease;
}
.nav-channels a:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-channels a.is-active{color:var(--c-primary);font-weight:600}
.nav-channels a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-box{position:relative;display:flex;align-items:center}
.search-box svg{
  position:absolute;left:14px;width:16px;height:16px;color:var(--c-text-3);pointer-events:none;
}
.search-box input{
  width:220px;height:40px;border-radius:var(--r-full);
  border:1px solid var(--c-line);background:var(--c-surface-2);
  padding:0 16px 0 38px;font-size:14px;outline:none;
  transition:width .24s ease,border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.search-box input::placeholder{color:var(--c-text-3)}
.search-box input:focus{
  width:300px;background:#fff;border-color:var(--c-primary);
  box-shadow:0 0 0 4px rgba(31,107,242,.12);
}
.burger{
  display:none;width:40px;height:40px;border-radius:var(--r-full);
  border:1px solid var(--c-line);background:#fff;align-items:center;justify-content:center;
  color:var(--c-text-2);cursor:pointer;flex-shrink:0;
}
.burger:hover{color:var(--c-primary);border-color:rgba(31,107,242,.4)}
.burger span{display:block;width:16px;height:2px;background:currentColor;border-radius:2px;position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;border-radius:2px;
}
.burger span::before{top:-5px}
.burger span::after{top:5px}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,24,40,.35);opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;z-index:80;
}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:82vw;max-width:340px;background:#fff;z-index:90;
  transform:translateX(-100%);transition:transform .24s ease;
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-nav{display:flex;flex-direction:column;gap:2px}
.drawer-nav a{
  padding:12px;border-radius:var(--r-s);font-size:15px;color:var(--c-text-2);
}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:10px}

/* ---------- Hero ---------- */
.hero{padding:64px 0 80px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero-pill{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--r-full);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;font-weight:600;margin-bottom:20px;
}
.hero-pill i{width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:block}
.hero h1{
  font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.22;
  letter-spacing:-.01em;max-width:15em;
}
.hero-sub{
  margin-top:20px;font-size:17px;line-height:1.8;color:var(--c-text-2);max-width:560px;
}
.hero-cta{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-stats{
  display:flex;gap:40px;margin-top:44px;padding-top:28px;
  border-top:1px solid var(--c-line);flex-wrap:wrap;
}
.hero-stats .stat-num{
  font-size:24px;font-weight:800;color:var(--c-text);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-stats .stat-num em{font-style:normal;color:var(--c-primary);font-size:16px;margin-left:2px}
.hero-stats .stat-label{font-size:12px;color:var(--c-text-3);margin-top:4px}

.hero-media{
  position:relative;aspect-ratio:9/16;border-radius:var(--r-xl);overflow:hidden;
  background:var(--c-surface-2);box-shadow:var(--sh-2);
}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center top}
.hero-media::after{
  content:"";position:absolute;inset:auto 0 0 0;height:52%;
  background:linear-gradient(to top,rgba(16,24,40,.72),rgba(16,24,40,0));
}
.hero-media-float{
  position:absolute;right:20px;bottom:20px;z-index:2;
  background:#fff;border-radius:var(--r-m);padding:10px 14px;
  box-shadow:var(--sh-2);
}
.hero-media-float .fm-top{font-size:12px;color:var(--c-text-3)}
.hero-media-float .fm-bot{font-size:14px;font-weight:700;font-variant-numeric:tabular-nums}
.hero-media-chip{
  position:absolute;right:20px;top:20px;z-index:2;
  background:rgba(255,255,255,.94);color:#0E8F82;
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-full);
  font-size:12px;font-weight:600;
}
.hero-media-chip i{width:6px;height:6px;border-radius:50%;background:var(--c-tertiary);display:block}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
.hero-media{animation:floaty 6s ease-in-out infinite}
@media (prefers-reduced-motion:reduce){
  .hero-media{animation:none}
  .marquee-track{animation:none !important}
  html{scroll-behavior:auto}
}

/* ---------- 卖点网格 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.feature-icon{
  width:44px;height:44px;border-radius:12px;background:var(--c-primary-soft);
  color:var(--c-primary);display:grid;place-items:center;margin-bottom:16px;
}
.feature-icon svg{width:22px;height:22px}
.card h3{font-size:18px;font-weight:600;line-height:1.4;margin-bottom:8px}
.card p{font-size:14px;color:var(--c-text-2);line-height:1.75}

/* ---------- 横滑片段 ---------- */
.rail-wrap{position:relative}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 24px;margin:0 -4px;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none}
.rail-card{
  position:relative;flex:0 0 220px;aspect-ratio:9/16;
  border-radius:var(--r-l);overflow:hidden;background:var(--c-surface-2);
  scroll-snap-align:start;box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.rail-card img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
.rail-card:hover img{transform:scale(1.03)}
.rail-card::after{
  content:"";position:absolute;inset:auto 0 0 0;height:56%;
  background:linear-gradient(to top,rgba(16,24,40,.78),rgba(16,24,40,0));
}
.rail-num{
  position:absolute;left:12px;top:12px;z-index:2;
  height:24px;padding:0 10px;border-radius:var(--r-full);
  background:rgba(255,255,255,.82);color:var(--c-text);
  font-size:12px;font-weight:700;display:inline-flex;align-items:center;
  font-variant-numeric:tabular-nums;
}
.rail-cap{
  position:absolute;left:14px;right:14px;bottom:14px;z-index:2;
  color:#fff;font-size:14px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rail-more{
  flex:0 0 220px;aspect-ratio:9/16;border-radius:var(--r-l);
  border:1px dashed var(--c-line-strong);background:var(--c-surface-2);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  color:var(--c-text-2);font-size:14px;font-weight:600;scroll-snap-align:start;
  transition:border-color .18s ease,color .18s ease;
}
.rail-more:hover{border-color:var(--c-primary);color:var(--c-primary)}
.rail-more svg{width:20px;height:20px}

/* ---------- 编号清单 ---------- */
.checklist{
  display:grid;grid-template-columns:1fr 1fr;gap:0 56px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-xl);
  padding:12px 32px;box-shadow:var(--sh-1);
}
.check-item{
  display:flex;gap:20px;align-items:flex-start;
  padding:24px 0;border-bottom:1px solid var(--c-line);
  transition:transform .2s ease;
}
.check-item:hover{transform:translateX(2px)}
.checklist .check-item:nth-last-child(-n+2){border-bottom:0}
.check-num{
  font-size:40px;font-weight:800;line-height:1;
  color:rgba(31,107,242,.18);font-variant-numeric:tabular-nums;
  transition:color .2s ease;flex-shrink:0;min-width:58px;
}
.check-item:hover .check-num{color:var(--c-primary)}
.check-body h3{font-size:17px;font-weight:600;line-height:1.4;margin-bottom:4px}
.check-body p{font-size:14px;color:var(--c-text-2);line-height:1.7}

/* ---------- 口碑条 ---------- */
.marquee{
  position:relative;overflow:hidden;
  -webkit-mask-image:linear-gradient(to right,transparent,#000 24px,#000 calc(100% - 24px),transparent);
  mask-image:linear-gradient(to right,transparent,#000 24px,#000 calc(100% - 24px),transparent);
}
.marquee-track{display:flex;gap:16px;width:max-content;animation:marquee 18s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.chip{
  display:flex;align-items:center;gap:10px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-full);
  padding:10px 20px 10px 10px;box-shadow:var(--sh-1);white-space:nowrap;
}
.chip-avatar{
  width:32px;height:32px;border-radius:50%;flex-shrink:0;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:grid;place-items:center;font-size:13px;font-weight:700;
}
.chip-name{font-size:13px;font-weight:600;color:var(--c-text)}
.chip-text{font-size:14px;color:var(--c-text-2);max-width:260px;overflow:hidden;text-overflow:ellipsis}

/* ---------- CTA 区块 ---------- */
.cta-band{
  background:var(--c-primary-soft);border-radius:var(--r-xl);
  padding:40px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;border:1px solid rgba(31,107,242,.12);
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.35}
.cta-band p{margin-top:8px;font-size:15px;color:var(--c-text-2);max-width:560px}
.cta-band-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-cover{display:block;position:relative;aspect-ratio:16/9;background:var(--c-surface-2);overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover;object-position:center}
.news-cover .badge{position:absolute;left:12px;bottom:12px;background:rgba(255,255,255,.94)}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-body h3{
  font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s ease;
}
.news-card:hover .news-body h3{color:var(--c-primary)}
.news-excerpt{
  margin-top:10px;font-size:14px;color:var(--c-text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);font-variant-numeric:tabular-nums;
}
.news-foot .read{display:inline-flex;align-items:center;gap:4px;color:var(--c-primary);font-weight:600}
.empty-state{
  border:1px dashed var(--c-line-strong);border-radius:var(--r-l);
  padding:56px 24px;text-align:center;background:var(--c-surface);
}
.empty-icon{
  width:56px;height:56px;border-radius:16px;background:var(--c-primary-soft);
  color:var(--c-primary);display:grid;place-items:center;margin:0 auto 16px;
}
.empty-icon svg{width:26px;height:26px}
.empty-state p{font-size:15px;color:var(--c-text-2);margin-bottom:16px}
.skeleton-card{border-radius:var(--r-l);overflow:hidden;border:1px solid var(--c-line);background:#fff}
.skeleton-block{background:#EEF2F9;position:relative;overflow:hidden}
.skeleton-block::after{
  content:"";position:absolute;inset:0;transform:translateX(-100%);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.65),transparent);
  animation:shimmer 1.4s infinite;
}
@keyframes shimmer{to{transform:translateX(100%)}}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);box-shadow:var(--sh-1);overflow:hidden}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 24px;min-height:56px;font-size:16px;font-weight:600;color:var(--c-text);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--c-primary)}
.faq-mark{
  width:28px;height:28px;border-radius:50%;flex-shrink:0;
  border:1px solid var(--c-line-strong);color:var(--c-primary);
  display:grid;place-items:center;font-size:16px;line-height:1;
  transition:transform .24s ease,border-color .18s ease,background-color .18s ease;
}
.faq-item.is-open .faq-mark{transform:rotate(45deg);background:var(--c-primary-soft);border-color:var(--c-primary)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .28s ease;
  background:var(--c-surface-2);
}
.faq-a-inner{padding:16px 20px;margin:0 24px 18px;font-size:15px;line-height:1.8;color:var(--c-text-2);background:var(--c-surface-2);border-radius:var(--r-m)}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--c-line);padding:64px 0 0;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-desc{font-size:13px;color:var(--c-text-3);line-height:1.8;max-width:280px}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--c-text-2);transition:color .18s ease}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}
.footer-bottom .tech{display:flex;gap:16px;flex-wrap:wrap}

/* ---------- 移动端底部 CTA ---------- */
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--c-line);
  box-shadow:var(--sh-3);
  padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  gap:10px;
}
.mobile-cta .btn{flex:1}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .nav-channels a{padding:10px 9px;font-size:14px}
  .search-box input{width:160px}
  .search-box input:focus{width:220px}
}
@media (max-width:1023px){
  .nav-channels{display:none}
  .burger{display:inline-flex}
  .search-box{display:none}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{max-width:420px;aspect-ratio:3/4;margin:0 auto;width:100%}
  .hero-cta .btn{flex:1;min-width:180px}
  .checklist{grid-template-columns:1fr;padding:8px 24px}
  .checklist .check-item:nth-last-child(-n+2){border-bottom:1px solid var(--c-line)}
  .checklist .check-item:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:64px 0}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section-head{margin-bottom:24px}
  .feature-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .hero{padding:36px 0 56px}
  .hero-media{aspect-ratio:3/4}
  .hero-cta{flex-direction:column;gap:12px}
  .hero-cta .btn{width:100%}
  .hero-stats{gap:24px;margin-top:32px}
  .rail-card,.rail-more{flex:0 0 160px}
  .rail{padding-left:0;padding-right:16px}
  .cta-band{padding:24px;flex-direction:column;align-items:flex-start}
  .cta-band-actions{width:100%}
  .cta-band-actions .btn{width:100%}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a-inner{margin:0 18px 16px}
  .mobile-cta{display:flex}
  body{padding-bottom:76px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:479px){
  .brand-name{font-size:15px}
  .btn{height:46px;font-size:14px;padding:0 18px}
  .check-num{font-size:32px;min-width:44px}
  .hero-stats .stat-num{font-size:20px}
  .news-body h3{font-size:16px}
}

/* roulang page: article */
:root{
  --c-primary:#1F6BF2;
  --c-primary-dark:#144FC0;
  --c-primary-soft:#EAF1FF;
  --c-accent:#FF7A2F;
  --c-accent-soft:#FFF1E8;
  --c-tertiary:#14B8A6;
  --c-tertiary-soft:#E6F8F5;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-surface-2:#FBFCFE;
  --c-line:#E6EBF5;
  --c-line-strong:#D6DEEE;
  --c-text:#101828;
  --c-text-2:#5A6B85;
  --c-text-3:#8A99B0;
  --c-warn:#E5484D;
  --c-ok:#12A594;
  --sh-1:0 1px 2px rgba(16,24,40,.04), 0 8px 24px rgba(31,107,242,.08);
  --sh-2:0 14px 36px rgba(31,107,242,.16);
  --sh-3:0 -6px 20px rgba(16,24,40,.08);
  --r-s:10px;
  --r-m:14px;
  --r-l:18px;
  --r-xl:24px;
  --r-full:999px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
input,button,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ===== 顶部阅读进度 ===== */
.reading-progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--c-primary);z-index:120;transition:width .1s linear;}

/* ===== 按钮体系 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-m);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:background-color .2s cubic-bezier(.2,.7,.3,1),color .2s,border-color .2s,transform .2s,box-shadow .2s;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(31,107,242,.22);}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(31,107,242,.28);}
.btn-primary:active{transform:translateY(0);background:var(--c-primary-dark);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(255,122,47,.24);}
.btn-accent:hover{background:#EE6A20;transform:translateY(-1px);}
.btn-accent:active{transform:translateY(0);background:#DB5F17;}
.btn-outline{background:#fff;color:var(--c-primary);border-color:rgba(31,107,242,.38);}
.btn-outline:hover{background:var(--c-primary-soft);border-color:var(--c-primary);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0 6px;}
.btn-ghost:hover{color:var(--c-primary-dark);}
.btn-sm{height:36px;padding:0 14px;font-size:14px;border-radius:var(--r-s);}
.btn.is-disabled{opacity:.45;cursor:not-allowed;pointer-events:none;}

/* ===== 徽章 / 标签 ===== */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-full);font-size:12px;font-weight:600;letter-spacing:.02em;}
.badge-primary{background:var(--c-primary-soft);color:var(--c-primary);}
.badge-accent{background:var(--c-accent-soft);color:#C4551A;}
.badge-tertiary{background:var(--c-tertiary-soft);color:#0E8A7B;}
.dot{width:6px;height:6px;border-radius:50%;background:currentColor;display:inline-block;}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-1);}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:26px;height:26px;border-radius:8px;background:var(--c-primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:16px;height:16px;}
.brand-name{font-size:17px;font-weight:800;color:var(--c-primary);letter-spacing:-.01em;white-space:nowrap;}
.nav-channels{display:flex;align-items:center;gap:22px;margin-left:8px;}
.nav-channels a{
  position:relative;font-size:15px;color:var(--c-text-2);padding:20px 0;font-weight:500;
  transition:color .18s ease;
}
.nav-channels a::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:center;
  transition:transform .2s ease;
}
.nav-channels a:hover{color:var(--c-primary);}
.nav-channels a.is-active{color:var(--c-primary);font-weight:600;}
.nav-channels a.is-active::after,
.nav-channels a:hover::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;width:220px;padding:0 14px;
  border:1px solid var(--c-line-strong);border-radius:var(--r-full);background:var(--c-surface-2);
  transition:width .25s ease,border-color .2s,box-shadow .2s;
}
.search-box svg{width:17px;height:17px;color:var(--c-text-3);flex-shrink:0;}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--c-text);
}
.search-box input::placeholder{color:var(--c-text-3);}
.search-box:focus-within{
  width:300px;border-color:var(--c-primary);background:#fff;
  box-shadow:0 0 0 4px rgba(31,107,242,.12);
}
.burger{
  display:none;width:40px;height:40px;border:1px solid var(--c-line-strong);background:#fff;
  border-radius:var(--r-m);align-items:center;justify-content:center;cursor:pointer;
}
.burger span{width:16px;height:2px;background:var(--c-text);border-radius:2px;position:relative;}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--c-text);border-radius:2px;
}
.burger span::before{top:-5px;}
.burger span::after{top:5px;}

.drawer-mask{
  position:fixed;inset:0;background:rgba(16,24,40,.35);opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;z-index:110;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:82vw;max-width:320px;background:#fff;z-index:120;
  transform:translateX(-100%);transition:transform .24s ease;display:flex;flex-direction:column;
  padding:20px;gap:6px;box-shadow:var(--sh-2);overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer .brand{margin-bottom:14px;}
.drawer a.drawer-link{
  display:block;padding:12px 10px;border-radius:var(--r-s);font-size:15px;color:var(--c-text-2);
  transition:background-color .18s,color .18s;
}
.drawer a.drawer-link:hover,.drawer a.drawer-link.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}
.drawer .drawer-cta{margin-top:auto;display:flex;flex-direction:column;gap:10px;padding-top:18px;}

/* ===== 面包屑 ===== */
.breadcrumb-bar{background:var(--c-bg);border-bottom:1px solid var(--c-line);}
.breadcrumb{
  display:flex;align-items:center;gap:8px;height:44px;font-size:13px;color:var(--c-text-3);
  overflow:hidden;white-space:nowrap;
}
.breadcrumb a{color:var(--c-text-2);transition:color .18s;}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:var(--c-line-strong);}
.breadcrumb .current{color:var(--c-primary);font-weight:600;overflow:hidden;text-overflow:ellipsis;}

/* ===== 文章主体 ===== */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;padding:40px 0 64px;}
.article-layout.has-side{grid-template-columns:minmax(0,1fr) 240px;}
.article-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);padding:32px;overflow:hidden;
}
.article-head{max-width:820px;}
.article-head h1{
  margin:14px 0 14px;font-size:clamp(26px,3.6vw,38px);font-weight:800;line-height:1.24;
  letter-spacing:-.01em;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);
  font-variant-numeric:tabular-nums;
}
.article-meta span.sep{color:var(--c-line-strong);}
.article-cover{margin:26px 0 0;border-radius:var(--r-l);overflow:hidden;background:var(--c-surface-2);}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;object-position:center;}
.article-cover figcaption{font-size:12px;color:var(--c-text-3);padding:10px 2px 0;}

.article-body{
  max-width:760px;margin-top:28px;font-size:16px;line-height:1.8;color:var(--c-text-2);
  word-break:break-word;overflow-wrap:anywhere;
}
.article-body p{margin:0 0 1em;}
.article-body strong{color:var(--c-text);font-weight:600;}
.article-body h2{
  position:relative;margin:40px 0 16px;padding-left:14px;color:var(--c-text);
  font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.35;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:1em;border-radius:2px;background:var(--c-primary);
}
.article-body h3{margin:28px 0 12px;font-size:19px;font-weight:600;line-height:1.45;color:var(--c-text);}
.article-body h4{margin:22px 0 10px;font-size:16px;font-weight:600;color:var(--c-text);}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-primary-dark);}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.4em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.5em;line-height:1.8;}
.article-body ul li::marker{color:var(--c-primary);}
.article-body ol li::marker{color:var(--c-primary);font-weight:700;}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--c-surface-2);border-left:4px solid var(--c-primary);
  border-radius:0 var(--r-m) var(--r-m) 0;color:var(--c-text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{width:100%;height:auto;border-radius:var(--r-m);margin:20px 0 12px;}
.article-body figure{margin:20px 0;}
.article-body figcaption{font-size:13px;color:var(--c-text-3);margin-top:8px;}
.article-body table{
  display:block;width:100%;max-width:100%;overflow-x:auto;border-collapse:collapse;
  font-size:15px;margin:22px 0;border:1px solid var(--c-line);border-radius:var(--r-m);
}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left;white-space:nowrap;}
.article-body th{background:var(--c-primary-soft);color:var(--c-text);font-weight:600;}
.article-body tr:nth-child(even) td{background:var(--c-surface-2);}
.article-body tr:last-child td{border-bottom:0;}
.article-body code{
  background:var(--c-surface-2);border:1px solid var(--c-line);border-radius:6px;
  padding:2px 6px;font-size:14px;color:var(--c-primary-dark);
}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0;}

/* ===== 标签组 ===== */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;padding-top:24px;border-top:1px solid var(--c-line);}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-full);
  background:var(--c-surface-2);border:1px solid var(--c-line);font-size:13px;color:var(--c-text-2);
  transition:background-color .18s,color .18s,border-color .18s;
}
.tag:hover{background:var(--c-primary-soft);border-color:rgba(31,107,242,.35);color:var(--c-primary);}

/* ===== 来源卡 ===== */
.source-card{
  display:flex;align-items:center;gap:14px;margin-top:24px;padding:18px 20px;
  background:var(--c-surface-2);border:1px solid var(--c-line);border-radius:var(--r-m);
}
.source-avatar{
  width:44px;height:44px;border-radius:var(--r-full);background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;flex-shrink:0;
}
.source-card h4{font-size:15px;font-weight:600;color:var(--c-text);margin-bottom:2px;}
.source-card p{font-size:13px;color:var(--c-text-3);}

/* ===== 侧栏 ===== */
.side-col{display:flex;flex-direction:column;gap:18px;}
.side-panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);padding:20px;position:sticky;top:88px;
}
.side-panel h3{font-size:15px;font-weight:700;color:var(--c-text);margin-bottom:6px;}
.side-panel .side-desc{font-size:13px;color:var(--c-text-3);line-height:1.7;margin-bottom:14px;}
.side-list li + li{margin-top:2px;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:10px 10px;border-radius:var(--r-s);font-size:14px;color:var(--c-text-2);
  transition:background-color .18s,color .18s;
}
.side-list a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.side-list svg{width:15px;height:15px;flex-shrink:0;color:var(--c-text-3);}
.side-list a:hover svg{color:var(--c-primary);}
.side-cta .btn{width:100%;}

/* ===== 空态 ===== */
.empty-state{
  margin:32px auto;max-width:560px;padding:44px 24px;text-align:center;
  border:1px dashed var(--c-line-strong);border-radius:var(--r-l);background:var(--c-surface-2);
}
.empty-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:var(--r-m);
  background:rgba(31,107,242,.12);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
}
.empty-icon svg{width:26px;height:26px;}
.empty-state h2{font-size:19px;font-weight:700;color:var(--c-text);margin-bottom:8px;}
.empty-state p{font-size:15px;color:var(--c-text-2);margin-bottom:18px;}

/* ===== 继续查看 ===== */
.section{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);margin-bottom:10px;letter-spacing:.02em;}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--c-primary);}
.section-head h2{font-size:clamp(21px,2.4vw,28px);font-weight:700;line-height:1.32;color:var(--c-text);}
.section-head p{font-size:14px;color:var(--c-text-2);margin-top:8px;max-width:620px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.card:hover .card-title{color:var(--c-primary);}
.card-media{position:relative;background:var(--c-surface-2);}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.card-media .badge{position:absolute;left:14px;bottom:14px;background:#fff;color:var(--c-primary);box-shadow:0 4px 12px rgba(16,24,40,.12);}
.card-body{padding:18px 20px 20px;}
.card-title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--c-text);margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s;
}
.card-text{
  font-size:14px;color:var(--c-text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;margin-top:14px;
  font-size:13px;color:var(--c-text-3);font-variant-numeric:tabular-nums;
}
.card-foot .more{display:inline-flex;align-items:center;gap:4px;color:var(--c-primary);font-weight:600;}
.card-foot svg{width:14px;height:14px;}

/* ===== 返回入口条 ===== */
.back-strip{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  background:var(--c-primary-soft);border-radius:var(--r-xl);padding:28px 32px;
}
.back-strip h2{font-size:20px;font-weight:700;color:var(--c-text);margin-bottom:6px;}
.back-strip p{font-size:14px;color:var(--c-text-2);}
.back-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ===== 回到顶部 ===== */
.to-top{
  position:fixed;right:24px;bottom:88px;width:44px;height:44px;border-radius:var(--r-full);
  background:#fff;border:1px solid var(--c-line);box-shadow:var(--sh-2);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:90;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s,visibility .24s,transform .24s,background-color .18s;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-primary-soft);}
.to-top svg{width:18px;height:18px;}

/* ===== 移动端底部 CTA ===== */
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:95;
  background:#fff;border-top:1px solid var(--c-line);box-shadow:var(--sh-3);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  gap:10px;
}
.mobile-cta .btn{flex:1;}

/* ===== 页脚 ===== */
.site-footer{background:#fff;border-top:1px solid var(--c-line);padding:56px 0 24px;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.footer-desc{font-size:13px;color:var(--c-text-3);line-height:1.8;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:14px;}
.footer-col ul li + li{margin-top:10px;}
.footer-col a{font-size:14px;color:var(--c-text-2);transition:color .18s;}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  margin-top:36px;padding-top:20px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-3);
}
.footer-bottom .tech{display:flex;flex-wrap:wrap;gap:16px;}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .search-box{width:180px;}
  .search-box:focus-within{width:220px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .article-layout.has-side{grid-template-columns:minmax(0,1fr);}
  .side-col{order:2;}
  .side-panel{position:static;}
  .section{padding:48px 0;}
}
@media (max-width:1023px){
  .nav-channels{display:none;}
  .nav-actions .btn-outline{display:none;}
  .burger{display:inline-flex;}
  .container{padding:0 20px;}
  .article-card{padding:24px;}
}
@media (max-width:767px){
  .nav-inner{height:56px;}
  .brand-name{font-size:16px;}
  .search-box{display:none;}
  .card-grid{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-desc{max-width:none;}
  .section{padding:40px 0;}
  .back-strip{padding:22px;border-radius:var(--r-l);}
  .mobile-cta{display:flex;}
  .to-top{bottom:80px;right:16px;}
  body{padding-bottom:0;}
  .article-layout{padding:24px 0 40px;gap:28px;}
}
@media (max-width:519px){
  .container{padding:0 16px;}
  .btn{height:48px;}
  .btn-sm{height:38px;}
  .article-card{padding:18px;border-radius:var(--r-m);}
  .article-head h1{font-size:24px;}
  .article-body{font-size:15.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .back-actions{width:100%;}
  .back-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --c-primary:#1F6BF2;
  --c-primary-dark:#144FC0;
  --c-primary-soft:#EAF1FF;
  --c-accent:#FF7A2F;
  --c-accent-soft:#FFF1E8;
  --c-tertiary:#14B8A6;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-surface-2:#FBFCFE;
  --c-line:#E6EBF5;
  --c-line-strong:#D6DEEE;
  --c-text:#101828;
  --c-text-2:#5A6B85;
  --c-text-3:#8A99B0;
  --c-warn:#E5484D;
  --c-ok:#12A594;
  --sh-1:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(31,107,242,.08);
  --sh-2:0 14px 36px rgba(31,107,242,.16);
  --sh-3:0 -6px 20px rgba(16,24,40,.08);
  --r-s:10px; --r-m:14px; --r-l:18px; --r-xl:24px; --r-full:999px;
  --container:1200px;
  --pad-y:88px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;line-height:1.8;
  color:var(--c-text-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-full);background:var(--c-primary-soft);color:var(--c-primary);font-size:12px;font-weight:600;letter-spacing:.02em}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary)}
.section{padding:var(--pad-y) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head .title-block{max-width:720px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;color:var(--c-text);margin-top:12px}
.section-head p{margin-top:10px;font-size:15px;color:var(--c-text-2)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);white-space:nowrap;transition:gap .2s ease}
.link-more:hover{gap:10px;text-decoration:underline;text-underline-offset:4px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border-radius:var(--r-m);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease;background:var(--c-surface)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-action{background:var(--c-accent);color:#fff;box-shadow:0 8px 22px rgba(255,122,47,.28)}
.btn-action:hover{background:#F06A1E;transform:translateY(-1px);box-shadow:0 12px 28px rgba(255,122,47,.32)}
.btn-action:active{transform:translateY(1px)}
.btn-outline{background:var(--c-surface);border-color:rgba(31,107,242,.45);color:var(--c-primary)}
.btn-outline:hover{border-color:var(--c-primary);background:var(--c-primary-soft);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0 6px}
.btn-ghost:hover{text-decoration:underline;text-underline-offset:4px}
.btn-pill{border-radius:var(--r-full)}
.btn-block{width:100%}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:var(--c-surface);border-bottom:1px solid var(--c-line);transition:box-shadow .24s ease}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:26px;height:26px;border-radius:8px;background:var(--c-primary);color:#fff;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.brand-mark svg{width:16px;height:16px}
.brand-name{font-size:17px;font-weight:800;color:var(--c-primary);letter-spacing:-.01em;white-space:nowrap}
.nav-channels{display:flex;align-items:center;gap:22px;margin-left:8px}
.nav-channels a{position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);padding:6px 0;transition:color .18s ease}
.nav-channels a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--c-primary);border-radius:2px;transition:width .2s ease}
.nav-channels a:hover{color:var(--c-primary)}
.nav-channels a:hover::after{width:100%}
.nav-channels a.is-active{color:var(--c-primary);font-weight:600}
.nav-channels a.is-active::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{display:flex;align-items:center;gap:8px;height:42px;width:220px;padding:0 16px;border:1px solid var(--c-line);border-radius:var(--r-full);background:var(--c-surface-2);transition:width .24s ease,border-color .2s ease,box-shadow .2s ease}
.search-box svg{width:16px;height:16px;color:var(--c-text-3);flex-shrink:0}
.search-box input{border:0;background:transparent;width:100%;font-size:14px;color:var(--c-text);outline:none}
.search-box input::placeholder{color:var(--c-text-3)}
.search-box:focus-within{width:300px;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(31,107,242,.12);background:#fff}
.burger{display:none;position:relative;width:40px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-s);background:var(--c-surface);cursor:pointer;flex-shrink:0}
.burger span{position:absolute;left:50%;top:50%;width:16px;height:2px;background:var(--c-text);border-radius:2px;transform:translate(-50%,-50%);transition:background .2s ease}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--c-text);border-radius:2px;transition:transform .2s ease}
.burger span::before{top:-5px}
.burger span::after{top:5px}
.nav-mask{position:fixed;inset:0;background:rgba(16,24,40,.35);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:110}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{position:fixed;top:0;left:0;width:82vw;max-width:360px;height:100%;background:var(--c-surface);z-index:120;padding:20px;display:flex;flex-direction:column;gap:6px;transform:translateX(-102%);transition:transform .24s ease;box-shadow:var(--sh-2);overflow-y:auto}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer .brand{margin-bottom:16px}
.nav-drawer a.drawer-link{padding:12px 4px;font-size:15px;color:var(--c-text-2);border-bottom:1px solid var(--c-line)}
.nav-drawer a.drawer-link.is-active{color:var(--c-primary);font-weight:600}
.nav-drawer .btn{margin-top:20px}

/* ---------- 面包屑 ---------- */
.crumb{background:var(--c-bg);border-bottom:1px solid var(--c-line)}
.crumb-inner{display:flex;align-items:center;gap:8px;height:44px;font-size:13px;color:var(--c-text-3);overflow:hidden;white-space:nowrap}
.crumb-inner a{color:var(--c-text-3);transition:color .18s ease}
.crumb-inner a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.crumb-inner .sep{color:var(--c-line-strong)}
.crumb-inner .current{color:var(--c-primary);font-weight:600;overflow:hidden;text-overflow:ellipsis}

/* ---------- 矮 Hero ---------- */
.hero-guide{background:linear-gradient(180deg,var(--c-primary-soft) 0%,#F8FAFF 100%);border-bottom:1px solid var(--c-line)}
.hero-guide .inner{display:grid;grid-template-columns:minmax(0,1fr) 240px;align-items:center;gap:40px;padding:44px 0;min-height:260px}
.hero-guide h1{font-size:clamp(28px,4vw,40px);font-weight:800;line-height:1.22;letter-spacing:-.01em;color:var(--c-text);margin:14px 0 12px;max-width:20em}
.hero-guide .lead{font-size:16px;color:var(--c-text-2);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.hero-notes{display:flex;flex-wrap:wrap;gap:18px;margin-top:18px}
.hero-notes span{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--c-text-3)}
.hero-notes span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-tertiary)}
.hero-media{position:relative;border-radius:var(--r-xl);overflow:hidden;aspect-ratio:9/16;background:var(--c-surface-2);box-shadow:var(--sh-1)}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center top}
.hero-media .tag-online{position:absolute;top:12px;right:12px;display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.94);color:var(--c-ok);font-size:12px;font-weight:600;padding:5px 10px;border-radius:var(--r-full)}
.hero-media .tag-online::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-ok)}
.hero-media::after{content:"";position:absolute;left:0;right:0;bottom:0;height:38%;background:linear-gradient(180deg,rgba(16,24,40,0) 0%,rgba(16,24,40,.72) 100%)}
.hero-media .media-cap{position:absolute;left:14px;right:14px;bottom:14px;z-index:2;color:#fff;font-size:13px;font-weight:600;line-height:1.5}

/* ---------- 状态核对卡片 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.check-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);padding:24px;box-shadow:var(--sh-1);transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease}
.check-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.check-card .icon{width:44px;height:44px;border-radius:var(--r-m);background:var(--c-primary-soft);color:var(--c-primary);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.check-card .icon svg{width:22px;height:22px}
.check-card h3{font-size:18px;font-weight:600;color:var(--c-text);margin-bottom:8px}
.check-card p{font-size:14px;line-height:1.75}

/* ---------- 时间轴 ---------- */
.timeline-wrap{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.timeline{position:relative;max-width:880px;margin:0 auto;padding-left:34px}
.timeline::before{content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:var(--c-primary);opacity:.28;border-radius:2px}
.timeline li{position:relative;padding:0 0 30px 0}
.timeline li:last-child{padding-bottom:0}
.timeline .node{position:absolute;left:-34px;top:2px;width:24px;height:24px;border-radius:50%;background:var(--c-surface);border:2px solid var(--c-primary);color:var(--c-primary);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;transition:transform .2s ease,background-color .2s ease,color .2s ease}
.timeline li:hover .node{transform:scale(1.06);background:var(--c-primary);color:#fff}
.timeline h3{font-size:18px;font-weight:600;color:var(--c-text);margin-bottom:6px}
.timeline p{font-size:14px;line-height:1.8;max-width:660px}

/* ---------- 准备清单 ---------- */
.prep-grid{display:grid;grid-template-columns:6fr 6fr;gap:40px;align-items:center}
.media-frame{border-radius:var(--r-l);overflow:hidden;background:var(--c-surface-2);border:1px solid var(--c-line);box-shadow:var(--sh-1)}
.media-frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
.prep-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--c-line)}
.prep-list li:first-child{padding-top:0}
.prep-list li:last-child{border-bottom:0;padding-bottom:0}
.prep-list .tick{width:24px;height:24px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:3px}
.prep-list .tick svg{width:13px;height:13px}
.prep-list h3{font-size:16px;font-weight:600;color:var(--c-text);margin-bottom:4px}
.prep-list p{font-size:14px;line-height:1.75}

/* ---------- 卡点处理卡片 ---------- */
.issue-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.issue-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);padding:24px;box-shadow:var(--sh-1);transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease}
.issue-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-full);font-size:12px;font-weight:600;letter-spacing:.02em}
.badge-blue{background:var(--c-primary-soft);color:var(--c-primary)}
.badge-accent{background:var(--c-accent-soft);color:#C4551A}
.badge-green{background:rgba(20,184,166,.12);color:#0E8C7F}
.issue-card h3{font-size:18px;font-weight:600;color:var(--c-text);margin:14px 0 8px}
.issue-card p{font-size:14px;line-height:1.8}
.issue-card ul{margin-top:12px}
.issue-card ul li{position:relative;padding-left:16px;font-size:14px;line-height:1.8}
.issue-card ul li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--c-primary);opacity:.5}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-xl);padding:8px 24px;box-shadow:var(--sh-1)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:0}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;background:transparent;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--c-text);cursor:pointer;transition:color .18s ease}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{position:relative;width:26px;height:26px;border-radius:50%;border:1px solid var(--c-line-strong);flex-shrink:0;transition:transform .24s ease,background-color .24s ease,border-color .24s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-text-2);border-radius:2px;transform:translate(-50%,-50%)}
.faq-icon::before{width:11px;height:1.6px}
.faq-icon::after{width:1.6px;height:11px;transition:opacity .2s ease}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--c-primary);border-color:var(--c-primary)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a .inner{background:var(--c-surface-2);border-radius:var(--r-m);padding:16px 20px;margin-bottom:16px;font-size:15px;line-height:1.8}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--c-primary-soft);border-radius:var(--r-xl);padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;color:var(--c-text);margin-bottom:10px}
.cta-band p{font-size:15px;max-width:640px}
.cta-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}

/* ---------- 延伸入口卡片 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.entry-card{display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.entry-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2)}
.entry-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.entry-card:hover .thumb img{transform:scale(1.03)}
.entry-card .body{padding:20px}
.entry-card h3{font-size:18px;font-weight:600;color:var(--c-text);margin:12px 0 8px;transition:color .2s ease}
.entry-card:hover h3{color:var(--c-primary)}
.entry-card p{font-size:14px;line-height:1.75}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:13px;color:var(--c-text-3)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-surface);border-top:1px solid var(--c-line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-desc{font-size:13px;line-height:1.8;max-width:320px;color:var(--c-text-2)}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:14px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--c-text-2);transition:color .18s ease}
.footer-col ul a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--c-line);margin-top:48px;padding:20px 0;font-size:13px;color:var(--c-text-3)}
.footer-bottom .tech{display:flex;gap:18px;flex-wrap:wrap}

/* ---------- 移动端底部 CTA ---------- */
.mobile-cta{display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;background:var(--c-surface);box-shadow:var(--sh-3);padding:10px 16px calc(10px + env(safe-area-inset-bottom));gap:10px}
.mobile-cta .btn{flex:1;min-height:48px}

@media (max-width:1199px){
  :root{--pad-y:72px}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .entry-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .search-box{width:180px}
  .search-box:focus-within{width:220px}
  .nav-channels{gap:18px}
}
@media (max-width:1023px){
  :root{--pad-y:64px}
  .hero-guide .inner{grid-template-columns:minmax(0,1fr) 200px;gap:28px}
  .prep-grid{grid-template-columns:1fr;gap:28px;justify-items:stretch}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:900px){
  .nav-channels{display:none}
  .search-box{display:none}
  .btn-outline.desk-only{display:none}
  .burger{display:flex;align-items:center;justify-content:center}
}
@media (max-width:767px){
  :root{--pad-y:48px}
  .container{padding:0 16px}
  .hero-guide .inner{grid-template-columns:1fr;padding:32px 0;gap:24px;min-height:0}
  .hero-media{aspect-ratio:16/10;max-width:100%}
  .hero-media::after{height:52%}
  .hero-actions .btn{width:100%}
  .check-grid{grid-template-columns:1fr;gap:16px}
  .issue-grid{grid-template-columns:1fr;gap:16px}
  .entry-grid{grid-template-columns:1fr;gap:16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px}
  .faq-list{padding:4px 18px}
  .timeline{padding-left:28px}
  .timeline .node{left:-28px;width:22px;height:22px}
  .timeline::before{left:10px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .mobile-cta{display:flex}
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
  .cta-actions{flex-direction:column;align-items:stretch;width:100%}
  .cta-actions .btn{width:100%}
}
@media (max-width:479px){
  body{font-size:15px}
  .brand-name{font-size:15px}
  .hero-guide h1{font-size:26px}
  .btn{font-size:14px;padding:0 16px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* roulang page: category2 */
:root{
  --c-primary:#1F6BF2;
  --c-primary-dark:#144FC0;
  --c-primary-soft:#EAF1FF;
  --c-accent:#FF7A2F;
  --c-accent-soft:#FFF1E8;
  --c-tertiary:#14B8A6;
  --c-tertiary-soft:#E6FAF7;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-surface-2:#FBFCFE;
  --c-line:#E6EBF5;
  --c-line-strong:#D6DEEE;
  --c-text:#101828;
  --c-text-2:#5A6B85;
  --c-text-3:#8A99B0;
  --c-warn:#E5484D;
  --c-ok:#12A594;
  --sh-1:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(31,107,242,.08);
  --sh-2:0 14px 36px rgba(31,107,242,.16);
  --sh-3:0 -6px 20px rgba(16,24,40,.08);
  --r-s:10px;
  --r-m:14px;
  --r-l:18px;
  --r-xl:24px;
  --r-full:999px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;line-height:1.3}
h1{font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.22;letter-spacing:-.01em}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3}
h3{font-size:19px;font-weight:600;line-height:1.4}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--c-primary);text-decoration:none;transition:color .18s}
a:hover{color:var(--c-primary-dark)}
img{max-width:100%;display:block;height:auto}
ul,ol{margin:0 0 1em;padding-left:1.4em}
li{margin:.25em 0}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
input{font:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sec-head h2{margin-top:10px}
.sec-head p{margin:10px 0 0;font-size:15px;color:var(--c-text-2);max-width:660px}
.sec-link{font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.sec-link:hover{color:var(--c-primary-dark);text-decoration:underline}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  color:var(--c-primary);background:var(--c-primary-soft);
  padding:6px 12px;border-radius:var(--r-full);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary)}

/* 按钮体系 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-m);
  border:1px solid transparent;font-size:15px;font-weight:600;
  text-decoration:none;white-space:nowrap;
  transition:background .18s,color .18s,border-color .18s,transform .18s,box-shadow .18s;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-primary:active{transform:translateY(1px)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#EA6A20;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-accent:active{transform:translateY(1px)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0 6px}
.btn-ghost:hover{color:var(--c-primary-dark);text-decoration:underline}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s;
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:22px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-primary);font-weight:800;font-size:17px;white-space:nowrap}
.brand:hover{color:var(--c-primary-dark)}
.brand-mark{width:24px;height:24px;border-radius:8px;background:var(--c-primary);color:#fff;display:grid;place-items:center;flex:0 0 auto}
.brand-mark svg{width:15px;height:15px}
.brand-name{letter-spacing:-.01em}
.nav-channels{display:flex;align-items:center;gap:22px}
.nav-channels a{position:relative;color:var(--c-text-2);font-size:15px;font-weight:500;padding:6px 0}
.nav-channels a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transition:transform .2s;
}
.nav-channels a:hover{color:var(--c-primary)}
.nav-channels a:hover::after,.nav-channels a.is-active::after{transform:scaleX(1)}
.nav-channels a.is-active{color:var(--c-primary);font-weight:600}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:8px;width:220px;height:40px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:var(--r-full);background:var(--c-surface-2);
  transition:width .2s,border-color .2s,box-shadow .2s,background .2s;
}
.search-box:focus-within{width:300px;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(31,107,242,.12);background:#fff}
.search-box svg{width:16px;height:16px;color:var(--c-text-3);flex:0 0 auto}
.search-box input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px;color:var(--c-text)}
.search-box input::placeholder{color:var(--c-text-3);font-size:14px}
.nav-actions .btn{height:40px;font-size:14px}
.burger{
  display:none;width:40px;height:40px;border-radius:var(--r-m);
  border:1px solid var(--c-line);background:#fff;align-items:center;justify-content:center;
}
.burger span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text)}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--c-text);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.nav-overlay{
  position:fixed;inset:0;background:rgba(16,24,40,.35);
  opacity:0;visibility:hidden;transition:opacity .24s,visibility .24s;z-index:70;
}
.nav-overlay.is-open{opacity:1;visibility:visible}

/* 紧凑页头 */
.page-head{background:#fff;border-bottom:1px solid var(--c-line);padding:30px 0 42px}
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--c-text-3);margin-bottom:20px}
.crumbs a{color:var(--c-text-3)}
.crumbs a:hover{color:var(--c-primary);text-decoration:underline}
.crumbs .sep{color:var(--c-line-strong)}
.crumbs .current{color:var(--c-primary)}
.head-grid{display:flex;align-items:flex-end;justify-content:space-between;gap:36px;flex-wrap:wrap}
.head-text{max-width:700px}
.head-text h1{margin:16px 0 14px}
.head-text p{font-size:16px;color:var(--c-text-2);max-width:620px;margin:0}
.head-actions{display:flex;gap:12px;flex-wrap:wrap;padding-bottom:6px}

/* 数据卡 */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.stat-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s,border-color .2s;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,107,242,.35)}
.stat-num{
  display:flex;align-items:baseline;gap:6px;
  font-size:34px;font-weight:800;color:var(--c-text);
  line-height:1.1;font-variant-numeric:tabular-nums;
}
.stat-num small{font-size:14px;font-weight:600;color:var(--c-text-3)}
.stat-label{margin-top:10px;font-size:14px;color:var(--c-text-2)}
.stat-state{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  font-size:12px;font-weight:600;color:var(--c-ok);
  background:var(--c-tertiary-soft);border-radius:var(--r-full);padding:4px 10px;
}
.stat-state i{width:6px;height:6px;border-radius:50%;background:var(--c-tertiary);display:inline-block}

/* 图文对照 */
.split-list{display:grid;gap:28px}
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-xl);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s,border-color .2s;
}
.split:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,107,242,.35)}
.split.reverse .split-media{order:2}
.split-media{border-radius:var(--r-l);overflow:hidden;aspect-ratio:4/3;background:var(--c-surface-2)}
.split-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.step-tag{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  color:#C7500F;background:var(--c-accent-soft);
  padding:5px 12px;border-radius:var(--r-full);
}
.split-body h3{margin:12px 0 10px}
.split-body > p{font-size:15px;color:var(--c-text-2);margin:0 0 16px}
.tick-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.tick-list li{position:relative;padding-left:22px;font-size:15px;color:var(--c-text-2);line-height:1.7}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;width:10px;height:10px;border-radius:50%;
  background:var(--c-primary-soft);border:2px solid var(--c-primary);
}

/* FAQ */
.faq{max-width:880px;margin:0 auto;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);box-shadow:var(--sh-1);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 24px;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-text);
  transition:background .18s,color .18s;
}
.faq-q:hover{background:var(--c-surface-2);color:var(--c-primary)}
.faq-icon{
  position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--c-line-strong);background:#fff;
  transition:transform .22s,background .22s,border-color .22s;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--c-primary);border-radius:2px;
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-primary-soft);border-color:var(--c-primary)}
.faq-a{display:none;margin:0 16px 16px;padding:16px 20px;background:var(--c-surface-2);border-radius:var(--r-m);font-size:15px;line-height:1.8;color:var(--c-text-2)}
.faq-item.is-open .faq-a{display:block}

/* CTA 区块 */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--c-primary-soft);border-radius:var(--r-xl);padding:40px;
}
.cta-text{max-width:620px}
.cta-text h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:10px}
.cta-text p{margin:0;font-size:15px;color:var(--c-text-2)}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--c-line);padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--c-primary);font-weight:800;font-size:17px;margin-bottom:14px}
.footer-desc{margin:0;font-size:13px;line-height:1.7;color:var(--c-text-3);max-width:320px}
.footer-col h4{font-size:14px;margin-bottom:14px;color:var(--c-text)}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--c-text-2)}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-3);
}
.footer-bottom .tech{display:flex;gap:18px;flex-wrap:wrap}

/* 移动端底部 CTA */
.mobile-cta{display:none}

@media (max-width:1024px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
  .search-box{width:190px}
  .search-box:focus-within{width:230px}
}
@media (max-width:900px){
  .nav-inner{gap:14px}
  .brand-name{font-size:15px}
  .search-box{display:none}
  .nav-actions .btn-outline{display:none}
  .burger{display:flex}
  .nav-channels{
    position:fixed;top:0;left:0;z-index:80;
    width:82vw;max-width:340px;height:100vh;height:100dvh;
    display:flex;flex-direction:column;align-items:flex-start;gap:0;
    background:#fff;padding:88px 24px 28px;
    transform:translateX(-100%);transition:transform .24s ease;
    box-shadow:var(--sh-2);overflow-y:auto;
  }
  .nav-channels.is-open{transform:translateX(0)}
  .nav-channels a{width:100%;padding:14px 0;font-size:16px;border-bottom:1px solid var(--c-line)}
  .nav-channels a::after{display:none}
  .split{gap:24px;padding:22px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section-tight{padding:40px 0}
  .page-head{padding:22px 0 32px}
  .head-grid{gap:24px}
  .head-actions{width:100%;padding-bottom:0}
  .stats{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;padding:18px}
  .split.reverse .split-media{order:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band{padding:28px 22px}
  .faq-q{padding:14px 18px;font-size:15px}
  .faq-a{margin:0 12px 14px;padding:14px 16px}
  body{padding-bottom:82px}
  .mobile-cta{
    display:flex;align-items:center;gap:12px;
    position:fixed;left:0;right:0;bottom:0;z-index:50;
    background:#fff;border-top:1px solid var(--c-line);box-shadow:var(--sh-3);
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  }
  .mobile-cta-text{font-size:13px;color:var(--c-text-2);line-height:1.4}
  .mobile-cta .btn{flex:1;height:44px}
}
@media (max-width:520px){
  h1{font-size:26px}
  .head-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .btn{height:48px}
}

/* roulang page: category3 */
:root{
  --c-primary:#1F6BF2;
  --c-primary-dark:#144FC0;
  --c-primary-soft:#EAF1FF;
  --c-accent:#FF7A2F;
  --c-accent-soft:#FFF1E8;
  --c-tertiary:#14B8A6;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-surface-2:#FBFCFE;
  --c-line:#E6EBF5;
  --c-line-strong:#D6DEEE;
  --c-text:#101828;
  --c-text-2:#5A6B85;
  --c-text-3:#8A99B0;
  --c-warn:#E5484D;
  --c-ok:#12A594;
  --sh-1:0 1px 2px rgba(16,24,40,.04), 0 8px 24px rgba(31,107,242,.08);
  --sh-2:0 14px 36px rgba(31,107,242,.16);
  --sh-3:0 -6px 20px rgba(16,24,40,.08);
  --r-s:10px;
  --r-m:14px;
  --r-l:18px;
  --r-xl:24px;
  --r-full:999px;
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0}
input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.3;font-weight:700;color:var(--c-text)}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:80;background:var(--c-surface);border-bottom:1px solid var(--c-line);transition:box-shadow .24s var(--ease)}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:22px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:28px;height:28px;border-radius:9px;background:var(--c-primary);color:#fff;display:grid;place-items:center;flex:none}
.brand-mark svg{width:16px;height:16px}
.brand-name{font-size:16px;font-weight:800;color:var(--c-primary);letter-spacing:-.01em;white-space:nowrap}
.nav-channels{display:flex;align-items:center;gap:26px;margin-left:6px}
.nav-channels a{position:relative;font-size:15px;color:var(--c-text-2);padding:6px 2px;transition:color .18s var(--ease)}
.nav-channels a:hover{color:var(--c-primary)}
.nav-channels a.is-active{color:var(--c-primary);font-weight:600}
.nav-channels a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--c-primary)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{display:flex;align-items:center;gap:8px;height:40px;width:220px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-full);background:var(--c-surface-2);transition:width .22s var(--ease),border-color .22s,box-shadow .22s}
.search-box:focus-within{width:296px;border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 4px rgba(31,107,242,.12)}
.search-box svg{width:16px;height:16px;color:var(--c-text-3);flex:none}
.search-box input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--c-text)}
.search-box input::placeholder{color:var(--c-text-3)}

/* ============ buttons ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:var(--r-m);font-size:15px;font-weight:600;white-space:nowrap;border:1px solid transparent;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .16s var(--ease),box-shadow .2s var(--ease)}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);box-shadow:var(--sh-1)}
.btn-action{background:var(--c-accent);color:#fff}
.btn-action:hover{background:#F06718;box-shadow:0 10px 24px rgba(255,122,47,.28)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-line-strong)}
.btn-outline:hover{border-color:rgba(31,107,242,.45);background:var(--c-primary-soft)}
.btn-ghost{color:var(--c-primary);padding:0 6px}
.btn-ghost:hover{color:var(--c-primary-dark)}
.btn-ghost svg{width:16px;height:16px}
.btn-pill{border-radius:var(--r-full)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ badges ============ */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-full);font-size:12px;font-weight:600;letter-spacing:.02em}
.badge-primary{background:var(--c-primary-soft);color:var(--c-primary-dark)}
.badge-accent{background:var(--c-accent-soft);color:#C9540F}
.badge-ok{background:#E4F7F4;color:#0B7F72}
.badge-soft{background:var(--c-surface-2);color:var(--c-text-2);border:1px solid var(--c-line)}

/* ============ crumbs ============ */
.crumbs{background:var(--c-bg);border-bottom:1px solid var(--c-line)}
.crumbs-inner{display:flex;align-items:center;gap:8px;height:44px;font-size:13px;color:var(--c-text-3);overflow:hidden}
.crumbs-inner a{color:var(--c-text-2);white-space:nowrap}
.crumbs-inner a:hover{color:var(--c-primary);text-decoration:underline}
.crumbs-inner .sep{color:var(--c-line-strong)}
.crumbs-inner .current{color:var(--c-primary-dark);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ============ hero ============ */
.hero-cat{background:linear-gradient(180deg,#EEF4FF 0%,var(--c-bg) 100%);padding:56px 0 64px}
.hero-cat-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-full);background:#fff;border:1px solid var(--c-line);font-size:13px;font-weight:600;color:var(--c-primary-dark)}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--c-tertiary)}
.hero-cat h1{margin:18px 0 16px;font-size:clamp(28px,4.2vw,42px);font-weight:800;line-height:1.22;letter-spacing:-.01em}
.hero-cat .lead{font-size:16px;color:var(--c-text-2);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;font-size:14px;color:var(--c-text-2)}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points svg{width:16px;height:16px;color:var(--c-tertiary);flex:none}

.reputation{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.rep-col{display:flex;flex-direction:column;gap:14px}
.rep-col.offset{margin-top:26px}
.rep-chip{display:flex;gap:10px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);padding:14px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.rep-chip:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.rep-avatar{width:32px;height:32px;border-radius:50%;flex:none;display:grid;place-items:center;font-size:13px;font-weight:700;color:#fff;background:var(--c-primary)}
.rep-col.offset .rep-chip .rep-avatar{background:var(--c-accent)}
.rep-chip:nth-child(2) .rep-avatar{background:var(--c-tertiary)}
.rep-name{font-size:13px;font-weight:600;color:var(--c-text)}
.rep-text{font-size:13.5px;color:var(--c-text-2);line-height:1.6}

/* ============ sections ============ */
.section{padding:72px 0}
.section.alt{background:var(--c-surface)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head .eyebrow{height:auto;padding:0;background:none;border:0;color:var(--c-primary);font-size:13px;font-weight:700;letter-spacing:.04em}
.section-head h2{margin-top:10px;font-size:clamp(22px,2.6vw,30px);font-weight:700}
.section-head .sub{margin-top:10px;font-size:15px;color:var(--c-text-2);max-width:640px}
.section-head .more{font-size:14px;font-weight:600;color:var(--c-primary);white-space:nowrap}
.section-head .more:hover{color:var(--c-primary-dark);text-decoration:underline}

/* ============ qa grid ============ */
.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.qa-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);padding:22px 24px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.qa-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,107,242,.35)}
.qa-top{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}
.qa-q{font-size:16px;font-weight:600;line-height:1.5;color:var(--c-text)}
.qa-num{flex:none;font-size:13px;font-weight:800;color:rgba(31,107,242,.32)}
.qa-answer{margin-top:12px;font-size:14.5px;color:var(--c-text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.qa-card.is-open .qa-answer{-webkit-line-clamp:unset;display:block}
.qa-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding-top:14px;border-top:1px solid var(--c-line)}
.qa-tags{display:flex;gap:8px;flex-wrap:wrap}
.qa-toggle{font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.qa-toggle svg{width:15px;height:15px;transition:transform .24s var(--ease)}
.qa-card.is-open .qa-toggle svg{transform:rotate(180deg)}
.qa-toggle:hover{color:var(--c-primary-dark)}

/* ============ marquee ============ */
.marquee{position:relative;overflow:hidden;margin-top:8px;padding:6px 0}
.marquee::before,.marquee::after{content:"";position:absolute;top:0;bottom:0;width:56px;z-index:2;pointer-events:none}
.marquee::before{left:0;background:linear-gradient(90deg,var(--c-surface),rgba(255,255,255,0))}
.marquee::after{right:0;background:linear-gradient(270deg,var(--c-surface),rgba(255,255,255,0))}
.marquee-track{display:flex;width:max-content;animation:marq 30s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-group{display:flex;flex:none}
.rep-card{display:flex;align-items:center;gap:12px;flex:none;margin-right:14px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-full);padding:10px 20px 10px 10px;box-shadow:var(--sh-1)}
.rep-card .rep-avatar{width:32px;height:32px}
.rep-card .rep-name{font-size:13px;font-weight:600;color:var(--c-text);white-space:nowrap}
.rep-card .rep-text{font-size:14px;color:var(--c-text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:320px}
@keyframes marq{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ============ compare table ============ */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-l);box-shadow:var(--sh-1)}
table{width:100%;min-width:720px;border-collapse:collapse}
thead th{background:var(--c-primary-soft);color:var(--c-primary-dark);font-size:14px;font-weight:700;text-align:left;padding:15px 20px;white-space:nowrap}
tbody td{padding:15px 20px;font-size:14.5px;color:var(--c-text-2);border-top:1px solid var(--c-line);vertical-align:top}
tbody tr:nth-child(even){background:var(--c-surface-2)}
tbody tr:hover{background:#F1F6FF}
tbody td strong{color:var(--c-text);font-weight:600}
.table-note{margin-top:14px;font-size:13.5px;color:var(--c-text-3)}

/* ============ cta band ============ */
.cta-band{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;background:var(--c-primary-soft);border-radius:var(--r-xl);padding:44px}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);font-weight:700}
.cta-band p{margin-top:12px;font-size:15px;color:var(--c-text-2)}
.cta-band .hero-actions{margin-top:24px}
.cta-media{border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/10;background:var(--c-surface-2)}
.cta-media img{width:100%;height:100%;object-fit:cover;object-position:center}

/* ============ footer ============ */
.site-footer{margin-top:24px;background:var(--c-surface);border-top:1px solid var(--c-line);padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-desc{margin-top:14px;font-size:13.5px;color:var(--c-text-3);max-width:320px;line-height:1.8}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--c-text-2);transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:40px;padding-top:20px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-text-3)}
.footer-bottom .tech{display:flex;gap:18px;flex-wrap:wrap}

/* ============ mobile bar & drawer ============ */
.mobile-cta{display:none}
.burger{display:none;width:40px;height:40px;border-radius:var(--r-m);border:1px solid var(--c-line);position:relative;flex:none}
.burger span,.burger span::before,.burger span::after{position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--c-text);transform:translateX(-50%)}
.burger span{top:50%;margin-top:-1px}
.burger span::before{content:"";top:-6px}
.burger span::after{content:"";top:6px}
.drawer-mask{position:fixed;inset:0;background:rgba(16,24,40,.35);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;z-index:90}
.drawer{position:fixed;top:0;left:0;width:82vw;max-width:340px;height:100%;background:#fff;z-index:95;transform:translateX(-100%);transition:transform .24s var(--ease);display:flex;flex-direction:column;padding:20px;box-shadow:var(--sh-2)}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-top:24px}
.drawer-nav a{padding:12px 10px;border-radius:var(--r-m);font-size:15px;color:var(--c-text-2)}
.drawer-nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary-dark);font-weight:600}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}

/* ============ responsive ============ */
@media (max-width:1199px){
  .nav-channels{gap:18px}
  .search-box{width:180px}
  .search-box:focus-within{width:230px}
  .hero-cat-inner{gap:32px}
  .cta-band{padding:36px;gap:28px}
}
@media (max-width:1023px){
  .nav-channels{display:none}
  .search-box{display:none}
  .burger{display:block}
  .hero-cat-inner{grid-template-columns:1fr;gap:36px}
  .reputation{grid-template-columns:1fr 1fr}
  .rep-col.offset{margin-top:0}
  .qa-grid{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:56px 0}
}
@media (max-width:767px){
  .container{padding:0 16px}
  body{padding-bottom:72px}
  .nav-inner{height:56px;gap:12px}
  .brand-name{font-size:15px}
  .nav-actions .btn-outline{display:none}
  .hero-cat{padding:36px 0 44px}
  .hero-actions .btn{width:100%}
  .reputation{grid-template-columns:1fr}
  .rep-card .rep-text{max-width:200px}
  .section{padding:44px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px}
  .cta-band{padding:26px 20px;border-radius:var(--r-l)}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .mobile-cta{display:flex;gap:10px;position:fixed;left:0;right:0;bottom:0;z-index:85;background:#fff;border-top:1px solid var(--c-line);box-shadow:var(--sh-3);padding:8px 16px calc(8px + env(safe-area-inset-bottom))}
  .mobile-cta .btn{flex:1}
}
@media (max-width:479px){
  .hero-cat h1{font-size:26px}
  .btn{height:46px;font-size:15px}
  .qa-card{padding:18px}
  .qa-foot{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .marquee-track{animation:none}
}