/* roulang page: index */
:root{
  --primary:#1E56D6;
  --primary-deep:#123A9B;
  --tint:#E8EFFF;
  --accent:#FF6A2A;
  --cyan:#16A6B6;
  --bg:#F6F8FC;
  --alt:#EEF3FB;
  --card:#FFFFFF;
  --ink:#0F1B2D;
  --sub:#4A5A72;
  --weak:#8494AB;
  --line:#E3E9F2;
  --foot:#0E1A2B;
  --r-card:16px;
  --r-hero:20px;
  --r-btn:12px;
  --sh-sm:0 1px 2px rgba(16,32,64,.06);
  --sh-md:0 8px 24px -12px rgba(16,32,64,.18);
  --sh-lg:0 24px 48px -24px rgba(16,32,64,.28);
  --focus:0 0 0 3px rgba(30,86,214,.30);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:none;box-shadow:var(--focus);border-radius:8px;}

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

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;position:relative;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--sh-sm);overflow:hidden;
}
.brand-mark::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 30% 78%, rgba(255,255,255,.85) 0 2.5px, transparent 3px),
    linear-gradient(115deg, transparent 44%, rgba(255,255,255,.9) 44% 50%, transparent 50%),
    linear-gradient(115deg, transparent 60%, rgba(255,255,255,.55) 60% 65%, transparent 65%);
}
.brand-text{font-weight:700;font-size:17px;letter-spacing:.01em;color:var(--ink);}
.brand-text small{display:block;font-size:11px;font-weight:500;color:var(--weak);letter-spacing:.04em;line-height:1.1;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:12px;}
.nav-links a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;
  font-size:15px;color:var(--sub);transition:background .18s,color .18s;
}
.nav-links a:hover{background:var(--tint);color:var(--primary);}
.nav-links a.active{background:var(--tint);color:var(--primary);font-weight:600;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;
  border:1px solid var(--line);border-radius:999px;background:#fff;
  transition:width .25s,border-color .2s,box-shadow .2s;width:44px;overflow:hidden;
}
.nav-search.open{width:250px;border-color:var(--primary);}
.nav-search svg{flex:0 0 auto;width:16px;height:16px;color:var(--weak);}
.nav-search input{
  border:none;outline:none;background:transparent;font-size:14px;width:100%;color:var(--ink);
}
.nav-search input::placeholder{color:var(--weak);}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-panel{
  display:none;border-top:1px solid var(--line);background:#fff;padding:12px 24px 20px;
}
.mobile-panel.open{display:block;}
.mobile-panel a{
  display:block;padding:12px 4px;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--sub);
}
.mobile-panel a.active{color:var(--primary);font-weight:600;}
.mobile-panel .btn{margin-top:16px;width:100%;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;line-height:1;
  transition:transform .18s,box-shadow .18s,background .18s,color .18s,border-color .18s;
  border:1px solid transparent;white-space:nowrap;
}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-md{height:44px;padding:0 20px;font-size:15px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-pill{border-radius:999px;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{filter:brightness(.94);transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(0);filter:brightness(.9);}
.btn-outline{background:#fff;border-color:var(--primary);color:var(--primary);}
.btn-outline:hover{background:var(--tint);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--primary);}
.btn-ghost:hover{background:var(--tint);}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--tint);color:var(--primary);
}
.badge-cyan{background:rgba(22,166,182,.12);color:var(--cyan);}
.badge-accent{background:rgba(255,106,42,.12);color:var(--accent);}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--sub);font-weight:500;}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);transition:transform .2s,box-shadow .2s,border-color .2s;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:var(--tint);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  padding:24px 0 64px;
}
.hero::before{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(30,86,214,.10),transparent 68%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;min-height:560px;}
.hero-copy{max-width:640px;}
.hero h1{
  font-size:clamp(28px,4.2vw,46px);font-weight:700;line-height:1.2;letter-spacing:.01em;
  color:var(--ink);margin:20px 0 16px;
}
.hero h1 em{font-style:normal;color:var(--primary-deep);}
.hero-sub{font-size:17px;color:var(--sub);line-height:1.8;max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;margin-top:36px;border-top:1px solid var(--line);padding-top:20px;
}
.hero-stats div{padding-right:28px;margin-right:28px;border-right:1px solid var(--line);}
.hero-stats div:last-child{border-right:none;margin-right:0;padding-right:0;}
.hero-stats b{display:block;font-size:22px;font-weight:700;color:var(--primary-deep);line-height:1.3;}
.hero-stats span{font-size:13px;color:var(--weak);}

.hero-visual{position:relative;height:560px;}
.hero-main{
  position:absolute;left:50%;top:0;transform:translateX(-50%);
  width:min(300px,72%);aspect-ratio:9/16;max-height:560px;
  border-radius:var(--r-hero);overflow:hidden;border:4px solid #fff;
  box-shadow:var(--sh-lg);background:var(--alt);
}
.hero-main img{width:100%;height:100%;object-fit:cover;}
.hero-main .bar{position:absolute;left:0;top:0;height:4px;width:62%;background:var(--accent);}
.hero-main .dur{
  position:absolute;right:10px;bottom:10px;background:rgba(0,0,0,.45);color:#fff;
  font-size:12px;padding:3px 9px;border-radius:999px;
}
.hero-side{
  position:absolute;width:190px;aspect-ratio:16/9;border-radius:14px;overflow:hidden;
  border:3px solid #fff;box-shadow:var(--sh-md);background:var(--alt);
}
.hero-side img{width:100%;height:100%;object-fit:cover;}
.hero-side.s1{left:-8px;bottom:24px;}
.hero-side.s2{right:-4px;bottom:96px;}

/* ---------- 板块通用 ---------- */
.section{padding:80px 0;}
.section-alt{background:var(--alt);}
.section-head{margin-bottom:40px;max-width:720px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--primary);
  letter-spacing:.06em;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--primary);}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;}
.section-head p{margin-top:12px;color:var(--sub);font-size:16px;}

/* ---------- 频道入口 ---------- */
.channel-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:24px;}
.channel-card{position:relative;overflow:hidden;display:flex;flex-direction:column;}
.channel-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--alt);}
.channel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.channel-card:hover .thumb img{transform:scale(1.04);}
.channel-card .body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.channel-card h3{font-size:19px;font-weight:600;}
.channel-card p{font-size:14.5px;color:var(--sub);}
.channel-card .more{margin-top:auto;color:var(--primary);font-size:14px;font-weight:600;display:inline-flex;gap:6px;align-items:center;}
.channel-card.feat .thumb{aspect-ratio:16/10;}

/* ---------- 卡带 ---------- */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 20px;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-item{
  scroll-snap-align:start;flex:0 0 272px;position:relative;
}
.rail-item .cover{
  position:relative;aspect-ratio:3/4;border-radius:var(--r-card);overflow:hidden;
  background:var(--alt);box-shadow:var(--sh-sm);
}
.rail-item .cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.rail-item:hover .cover img{transform:scale(1.05);}
.rail-item .dur{
  position:absolute;right:10px;bottom:10px;background:rgba(0,0,0,.45);color:#fff;
  font-size:12px;padding:3px 9px;border-radius:999px;
}
.play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.86);
  display:flex;align-items:center;justify-content:center;transition:transform .2s;
}
.play::after{content:"";border-left:12px solid var(--primary);border-top:8px solid transparent;border-bottom:8px solid transparent;margin-left:3px;}
.rail-item:hover .play{transform:translate(-50%,-50%) scale(1.06);}
.rail-item h3{font-size:15px;font-weight:600;margin-top:12px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rail-item .meta{font-size:13px;color:var(--weak);margin-top:6px;}
.rail-btn{
  position:absolute;top:38%;width:40px;height:40px;border-radius:50%;background:#fff;border:1px solid var(--line);
  box-shadow:var(--sh-md);display:flex;align-items:center;justify-content:center;color:var(--primary);
  transition:background .18s,transform .18s;z-index:5;
}
.rail-btn:hover{background:var(--tint);transform:translateY(-1px);}
.rail-btn.prev{left:-8px;}
.rail-btn.next{right:-8px;}
.rail-fade{position:absolute;top:0;bottom:20px;width:64px;pointer-events:none;}
.rail-fade.l{left:0;background:linear-gradient(90deg,var(--bg),rgba(246,248,252,0));}
.rail-fade.r{right:0;background:linear-gradient(270deg,var(--bg),rgba(246,248,252,0));}

/* ---------- 交错清单 ---------- */
.pick-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start;}
.pick{
  display:flex;gap:18px;padding:18px;align-items:flex-start;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.pick:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:var(--tint);}
.pick.offset{margin-top:28px;}
.pick .pic{
  flex:0 0 96px;width:96px;height:96px;border-radius:12px;overflow:hidden;background:var(--alt);
}
.pick .pic img{width:100%;height:100%;object-fit:cover;}
.pick .txt{flex:1;min-width:0;}
.pick .no{
  font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.06em;line-height:1;
}
.pick h3{font-size:16.5px;font-weight:600;margin:8px 0 6px;line-height:1.5;}
.pick p{font-size:14px;color:var(--sub);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.pick .foot{display:flex;align-items:center;gap:10px;margin-top:12px;}
.pick .arrow{margin-left:auto;color:var(--primary);font-weight:700;}

/* ---------- 口碑 ---------- */
.voice-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:12px;scrollbar-width:none;}
.voice-track::-webkit-scrollbar{display:none;}
.voice{
  scroll-snap-align:start;flex:0 0 340px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-sm);
}
.voice:nth-child(even){transform:translateY(16px);}
.voice .top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:15px;
}
.avatar.a1{background:var(--primary);}
.avatar.a2{background:var(--cyan);}
.avatar.a3{background:var(--accent);}
.avatar.a4{background:var(--primary-deep);}
.voice .name{font-weight:600;font-size:15px;}
.voice .role{font-size:12.5px;color:var(--weak);}
.stars{margin-left:auto;color:var(--accent);font-size:13px;letter-spacing:2px;}
.voice p{margin-top:14px;font-size:14.5px;color:var(--sub);line-height:1.8;}

/* ---------- CMS 列表 ---------- */
.cms-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.cms-card{display:flex;flex-direction:column;padding:24px;height:100%;}
.cms-card h3{
  font-size:17px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-card h3 a:hover{color:var(--primary);}
.cms-card .sum{
  margin-top:10px;font-size:14px;color:var(--sub);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-card .foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--weak);}
.cms-more{display:flex;justify-content:center;margin-top:36px;}
.empty{
  grid-column:1/-1;text-align:center;padding:56px 20px;background:#fff;
  border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty .icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;background:var(--tint);
  display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:22px;font-weight:700;
}
.empty p{color:var(--sub);margin-bottom:18px;}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-sm);}
.step .num{
  width:38px;height:38px;border-radius:12px;background:var(--tint);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;
}
.step h3{margin:16px 0 8px;font-size:17px;font-weight:600;}
.step p{font-size:14.5px;color:var(--sub);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .2s,box-shadow .2s;}
.faq-item[open]{border-color:var(--tint);box-shadow:var(--sh-md);}
.faq-item summary{
  list-style:none;cursor:pointer;min-height:56px;display:flex;align-items:center;gap:14px;
  padding:14px 22px;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .pm{
  margin-left:auto;flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .25s;
}
.faq-item summary .pm::before,.faq-item summary .pm::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-item summary .pm::before{width:14px;height:2px;}
.faq-item summary .pm::after{width:2px;height:14px;transition:opacity .2s;}
.faq-item[open] summary .pm{transform:rotate(90deg);}
.faq-item[open] summary .pm::after{opacity:0;}
.faq-item .ans{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--sub);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--tint);border:1px solid #D3E0FF;border-radius:var(--r-hero);
  padding:36px;display:flex;align-items:center;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;}
.cta-band p{margin-top:8px;color:var(--sub);font-size:15px;}
.cta-band .cta-right{margin-left:auto;display:flex;flex-direction:column;gap:12px;min-width:280px;}
.cta-form{display:flex;gap:10px;background:#fff;border-radius:14px;padding:6px;border:1px solid var(--line);}
.cta-form input{
  flex:1;height:44px;border:none;outline:none;background:transparent;padding:0 14px;font-size:15px;color:var(--ink);border-radius:12px;
}
.cta-form input::placeholder{color:var(--weak);}
.cta-form input:focus{box-shadow:var(--focus);}
.cta-note{font-size:13px;color:var(--weak);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--foot);color:#B9C6DA;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.site-footer .brand-text,.site-footer .brand-text small{color:#fff;}
.site-footer .brand-text small{color:#8B9BB4;}
.footer-about p{margin-top:16px;font-size:14px;line-height:1.85;color:#9DB0C9;max-width:340px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:#9DB0C9;transition:color .18s,padding-left .18s;}
.footer-links a:hover{color:var(--accent);padding-left:4px;}
.footer-contact p{font-size:14px;color:#9DB0C9;margin-bottom:10px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.09);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#7E8FA8;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-search{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:auto;}
  .hero-visual{height:480px;}
  .hero-main{width:min(260px,58%);}
  .hero-side{width:160px;}
  .channel-grid{grid-template-columns:1fr 1fr;}
  .channel-card.feat{grid-column:1/-1;}
  .cms-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .rail-btn{display:none;}
  .rail-fade{display:none;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .hero{padding-bottom:40px;}
  .hero h1{margin:16px 0 12px;}
  .pick-grid{grid-template-columns:1fr;}
  .pick.offset{margin-top:0;}
  .hero-stats div{padding-right:18px;margin-right:18px;}
  .hero-stats b{font-size:19px;}
  .cta-band{padding:24px;}
  .cta-band .cta-right{margin-left:0;width:100%;min-width:0;}
  .voice{flex:0 0 82vw;}
  .rail-item{flex:0 0 76vw;}
}
@media (max-width:520px){
  .nav-inner{height:56px;}
  .brand-text{font-size:15px;}
  .channel-grid{grid-template-columns:1fr;}
  .cms-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-visual{height:400px;}
  .hero-side{width:132px;}
  .hero-main{width:min(230px,64%);}
  .pick .pic{flex:0 0 74px;width:74px;height:74px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: article */
:root{
  --primary:#1E56D6;
  --primary-deep:#123A9B;
  --tint:#E8EFFF;
  --accent:#FF6A2A;
  --cyan:#16A6B6;
  --bg:#F6F8FC;
  --bg-alt:#EEF3FB;
  --card:#FFFFFF;
  --ink:#0F1B2D;
  --ink-2:#4A5A72;
  --ink-3:#8494AB;
  --line:#E3E9F2;
  --footer:#0E1A2B;
  --r-card:16px;
  --r-hero:20px;
  --r-btn:12px;
  --sh-sm:0 1px 2px rgba(16,32,64,.06);
  --sh-md:0 8px 24px -12px rgba(16,32,64,.18);
  --sh-lg:0 24px 48px -24px rgba(16,32,64,.28);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
button{font-family:inherit}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
:focus-visible{outline:none;box-shadow:0 0 0 3px var(--tint),0 0 0 4px var(--primary)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (max-width:640px){.container{padding:0 16px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.9);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{position:relative;display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  position:relative;width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--sh-sm);
}
.brand-mark::before{content:"";position:absolute;inset:8px 7px;border:2px solid #fff;border-radius:50%;opacity:.95}
.brand-mark::after{content:"";position:absolute;left:50%;top:7px;width:2px;height:20px;background:#fff;border-radius:2px;transform:translateX(-50%);opacity:.95}
.brand-text{display:flex;flex-direction:column;font-size:16px;font-weight:700;color:var(--ink);line-height:1.2;letter-spacing:-.01em}
.brand-text small{font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.04em;margin-top:1px}
.nav-links{display:flex;align-items:center;gap:4px;margin-right:auto}
.nav-links a{
  display:inline-block;padding:8px 14px;border-radius:999px;
  font-size:15px;color:var(--ink-2);white-space:nowrap;
}
.nav-links a:hover{color:var(--primary);background:var(--tint)}
.nav-links a.active{color:var(--primary);background:var(--tint);font-weight:600}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-search{
  display:flex;align-items:center;height:40px;padding-right:5px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:hover,.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--tint)}
.nav-search input{
  width:0;opacity:0;height:100%;border:0;outline:none;background:transparent;
  font-size:14px;color:var(--ink);
  transition:width .25s ease,opacity .2s ease,padding .25s ease;
}
.nav-search:hover input,.nav-search:focus-within input{width:186px;opacity:1;padding:0 4px 0 16px}
.nav-search input::placeholder{color:var(--ink-3)}
.search-btn{
  width:30px;height:30px;border:0;border-radius:50%;background:transparent;
  color:var(--ink-2);display:grid;place-items:center;cursor:pointer;transition:.2s;
}
.search-btn:hover{background:var(--tint);color:var(--primary)}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:12px;
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:.25s ease}
.nav-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{filter:brightness(.94);transform:translateY(-1px);box-shadow:var(--sh-md);color:#fff}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--tint)}
.btn-ghost{background:transparent;color:var(--primary)}
.btn-ghost:hover{background:var(--tint)}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn.is-done{background:var(--tint);color:var(--primary-deep);border-color:var(--line)}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;background:var(--tint);color:var(--primary-deep);
}
.chip-cyan{background:rgba(22,166,182,.12);color:#0F7C89}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  padding:36px 0 56px;
  background-image:linear-gradient(180deg,rgba(246,248,252,.95),rgba(238,243,251,.98)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:26px;flex-wrap:wrap}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#C3CEE0}
.crumb-current{max-width:460px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink-3)}
.hero-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center}
.hero-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.article-hero h1{
  font-size:clamp(28px,4.2vw,46px);line-height:1.2;font-weight:700;
  color:var(--primary-deep);letter-spacing:-.015em;
}
.meta-row{display:flex;gap:20px;flex-wrap:wrap;margin-top:18px;font-size:14px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-hero);border:4px solid #fff;box-shadow:var(--sh-lg);
}

/* ---------- 正文 ---------- */
.article-main{padding:56px 0 8px}
.article-shell{max-width:780px;margin:0 auto}
.article-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-hero);
  box-shadow:var(--sh-sm);padding:48px;
}
.article-body{font-size:17px;line-height:1.9;color:#243044;word-wrap:break-word}
.article-body p{margin:0 0 1.4em;line-height:1.9}
.article-body h2{
  position:relative;font-size:24px;font-weight:700;color:var(--primary-deep);
  margin:40px 0 16px;padding-left:14px;line-height:1.4;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;background:var(--accent)}
.article-body h3{font-size:19px;font-weight:600;color:var(--ink);margin:28px 0 12px;line-height:1.5}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:22px 0 10px}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--tint);
  border-left:3px solid var(--primary);border-radius:0 12px 12px 0;color:var(--primary-deep);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul{margin:0 0 1.4em;padding:0}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;background:var(--accent)}
.article-body ol{counter-reset:artnum;margin:0 0 1.4em;padding:0}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:10px;counter-increment:artnum}
.article-body ol li::before{
  content:counter(artnum);position:absolute;left:0;top:.28em;
  width:20px;height:20px;border-radius:6px;background:var(--tint);color:var(--primary-deep);
  font-size:12px;font-weight:700;display:grid;place-items:center;line-height:1;
}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(30,86,214,.35)}
.article-body a:hover{color:var(--accent);border-color:var(--accent)}
.article-body img{border-radius:12px;box-shadow:var(--sh-md);margin:24px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.article-body th{background:var(--tint);color:var(--primary-deep);text-align:left;padding:12px 16px;font-weight:600;border-bottom:1px solid var(--line)}
.article-body td{padding:12px 16px;border-top:1px solid var(--line);color:var(--ink-2)}
.article-body tbody tr:nth-child(even) td{background:#FAFCFF}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body strong{color:var(--ink);font-weight:700}

.empty-state{text-align:center;padding:36px 0 28px}
.empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;background:var(--tint);
  color:var(--primary);display:grid;place-items:center;font-size:24px;font-weight:700;
}
.empty-state h2{font-size:22px;color:var(--primary-deep);font-weight:700}
.empty-state p{margin:10px auto 24px;color:var(--ink-2);max-width:460px;font-size:15px}

.article-foot{
  max-width:780px;margin:28px auto 0;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
}
.article-foot .foot-tags{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0}
.section-head{max-width:700px;margin-bottom:32px}
.section-head h2{
  position:relative;padding-left:16px;font-size:clamp(22px,2.6vw,30px);
  font-weight:700;color:var(--primary-deep);letter-spacing:-.01em;line-height:1.3;
}
.section-head h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:3px;background:var(--accent)}
.section-head p{margin-top:12px;color:var(--ink-2);font-size:16px}

/* ---------- 相关推荐 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rel-card{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;box-shadow:var(--sh-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:var(--tint)}
.rel-card img{width:84px;height:84px;border-radius:12px;object-fit:cover;flex:0 0 auto}
.rel-body h3{font-size:16px;font-weight:700;color:var(--ink);line-height:1.45}
.rel-body p{margin-top:6px;font-size:13px;line-height:1.65;color:var(--ink-2)}
.rel-more{display:inline-block;margin-top:8px;font-size:13px;font-weight:600;color:var(--primary)}
.rel-card:hover .rel-more{color:var(--accent)}

/* ---------- CTA ---------- */
.cta-section{padding:8px 0 80px}
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:34px 36px;border-radius:var(--r-hero);
  background:linear-gradient(135deg,#E8EFFF 0%,#F6F8FC 100%);
  border:1px solid rgba(30,86,214,.18);box-shadow:var(--sh-sm);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--primary-deep)}
.cta-band p{margin-top:8px;color:var(--ink-2);font-size:15px;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:#B9C6D8;padding:64px 0 0;margin-top:32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.site-footer .brand-text{color:#fff}
.site-footer .brand-text small{color:#7E90A8}
.footer-about p{margin-top:16px;font-size:14px;line-height:1.8;color:#93A4BC;max-width:340px}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:#A7B6CB}
.footer-links a:hover{color:var(--accent)}
.footer-contact p{font-size:14px;color:#93A4BC;margin-bottom:10px;line-height:1.7}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.08);padding:20px 0;
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#7E90A8;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-figure img{aspect-ratio:16/9}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:56px 0}
  .cta-section{padding:8px 0 64px}
}
@media (max-width:960px){
  .nav-search{display:none}
  .nav-toggle{display:flex}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:4px;margin-right:0;
    background:#fff;border:1px solid var(--line);border-radius:16px;
    padding:12px;box-shadow:var(--sh-lg);
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 14px;border-radius:12px}
  .header-inner{height:56px;gap:16px}
}
@media (max-width:768px){
  .article-hero{padding:24px 0 40px}
  .article-main{padding:36px 0 4px}
  .article-card{padding:26px 20px;border-radius:16px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:21px;margin-top:32px}
  .article-body h3{font-size:18px}
  .cta-band{padding:26px 22px}
  .section{padding:44px 0}
  .site-footer{padding-top:48px}
}
@media (max-width:640px){
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .breadcrumb{margin-bottom:20px}
  .crumb-current{max-width:200px}
  .hero-actions .btn{flex:1 1 auto}
}

/* roulang page: category1 */
:root{
  --primary:#1E56D6;
  --primary-deep:#123A9B;
  --tint:#E8EFFF;
  --accent:#FF6A2A;
  --cyan:#16A6B6;
  --cyan-tint:#E4F6F8;
  --bg:#F6F8FC;
  --bg-alt:#EEF3FB;
  --card:#FFFFFF;
  --ink:#0F1B2D;
  --ink-2:#4A5A72;
  --ink-3:#8494AB;
  --line:#E3E9F2;
  --danger:#E5484D;
  --r-card:16px;
  --r-hero:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,32,64,.06);
  --sh-md:0 8px 24px -12px rgba(16,32,64,.18);
  --sh-lg:0 24px 48px -24px rgba(16,32,64,.28);
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:64px; --sp-7:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
h1{font-size:clamp(28px,4.2vw,46px);font-weight:700;line-height:1.2;letter-spacing:-.01em;margin:0 0 var(--sp-2)}
h2,.h2{font-size:clamp(22px,2.8vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em;margin:0}
h3,.h3{font-size:19px;font-weight:600;line-height:1.45;margin:0 0 var(--sp-1)}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
:focus-visible{outline:3px solid rgba(30,86,214,.35);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:var(--sp-3);height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  position:relative;width:32px;height:32px;border-radius:10px;
  background:linear-gradient(135deg,#1E56D6,#123A9B);
  box-shadow:0 6px 14px -8px rgba(30,86,214,.8);
  flex-shrink:0;
}
.brand-mark::after{
  content:'';position:absolute;left:7px;right:7px;top:9px;bottom:9px;
  border:2px solid rgba(255,255,255,.92);
  border-radius:999px 999px 4px 4px;
  border-top-color:rgba(255,255,255,.35);
}
.brand-mark::before{
  content:'';position:absolute;left:7px;right:7px;bottom:6px;height:3px;border-radius:2px;
  background:var(--accent);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;line-height:1.1;display:flex;flex-direction:column}
.brand-text small{font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.02em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  padding:8px 14px;border-radius:var(--r-pill);font-size:15px;color:var(--ink-2);
  transition:background .2s ease,color .2s ease;white-space:nowrap;
}
.nav-links a:hover{background:var(--tint);color:var(--primary)}
.nav-links a.active{background:var(--tint);color:var(--primary);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:0;opacity:0;overflow:hidden;
  transition:width .25s ease,opacity .25s ease;
}
.search-box.open{width:250px;opacity:1}
.search-box input{
  width:100%;height:38px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box input::placeholder{color:var(--ink-3)}
.search-box input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--tint)}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-btn);display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-2);border:1px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:var(--tint);color:var(--primary);border-color:rgba(30,86,214,.18)}
.icon-btn svg{width:18px;height:18px}
.menu-toggle{display:none;width:38px;height:38px;border-radius:var(--r-btn);align-items:center;justify-content:center;color:var(--ink-2)}
.menu-toggle:hover{background:var(--tint);color:var(--primary)}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:12px 0 20px}
.mobile-drawer.open{display:block}
.mobile-drawer a{
  display:block;padding:12px 20px;font-size:15px;color:var(--ink-2);border-radius:10px;margin:0 12px;
}
.mobile-drawer a.active{background:var(--tint);color:var(--primary);font-weight:600}
.mobile-drawer .drawer-cta{margin:12px 16px 0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-md{height:44px;padding:0 20px;font-size:15px}
.btn-lg{height:52px;padding:0 28px;font-size:16px;border-radius:var(--r-pill)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px -10px rgba(255,106,42,.75)}
.btn-primary:hover{filter:brightness(.94);transform:translateY(-1px);box-shadow:0 14px 28px -12px rgba(255,106,42,.8)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px -8px rgba(255,106,42,.7)}
.btn-outline{background:#fff;border:1px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--tint);transform:translateY(-1px)}
.btn-ghost{color:var(--primary)}
.btn-ghost:hover{background:var(--tint)}

/* ---------- 通用元素 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:7px;padding:5px 13px;border-radius:var(--r-pill);
  background:var(--tint);color:var(--primary);font-size:12px;font-weight:600;letter-spacing:.01em;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.tag{
  display:inline-flex;align-items:center;padding:4px 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;background:var(--tint);color:var(--primary);white-space:nowrap;
}
.tag-cyan{background:var(--cyan-tint);color:#0E7C88}
.tag-soft{background:#F1F4FA;color:var(--ink-2)}
.section{padding:var(--sp-7) 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:var(--sp-5)}
.section-head .h2{position:relative;padding-left:16px}
.section-head .h2::before{
  content:'';position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--primary);
}
.section-desc{margin-top:14px;color:var(--ink-2);font-size:17px;line-height:1.8}

/* ---------- Hero ---------- */
.hero{position:relative;padding:56px 0 72px;background:linear-gradient(180deg,#FFFFFF 0%,#F4F7FD 100%);overflow:hidden}
.hero::before{
  content:'';position:absolute;right:-140px;top:-120px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(30,86,214,.12),transparent 68%);pointer-events:none;
}
.hero::after{
  content:'';position:absolute;left:-160px;bottom:-180px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,42,.10),transparent 70%);pointer-events:none;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-copy h1{margin-top:18px}
.hero-sub{font-size:18px;color:var(--ink-2);line-height:1.75;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 0}
.hero-stats{display:flex;align-items:center;margin-top:34px;border-top:1px solid var(--line);padding-top:22px}
.hero-stats div{padding:0 26px;border-left:1px solid var(--line)}
.hero-stats div:first-child{padding-left:0;border-left:0}
.hero-stats strong{display:block;font-size:24px;font-weight:700;line-height:1.2;font-variant-numeric:tabular-nums}
.hero-stats span{font-size:13px;color:var(--ink-3)}
.hero-visual{margin:0}
.hero-card{
  position:relative;margin:0;aspect-ratio:4/5;max-height:560px;width:100%;
  border-radius:var(--r-hero);overflow:hidden;border:4px solid #fff;box-shadow:var(--sh-lg);
  background:#DDE5F4;
}
.hero-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-progress{position:absolute;top:0;left:0;height:4px;width:68%;background:var(--accent);z-index:2}
.hero-tag{
  position:absolute;left:16px;bottom:16px;z-index:2;
  background:rgba(15,27,45,.62);color:#fff;font-size:12px;font-weight:500;
  padding:6px 13px;border-radius:var(--r-pill);backdrop-filter:blur(4px);
}

/* ---------- 图文介绍 ---------- */
.feature-list{display:flex;flex-direction:column;gap:var(--sp-5)}
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-sm);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.feature-row:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:#D3E0F7}
.feature-row--alt{background:linear-gradient(180deg,#FFFFFF 0%,#F7FAFF 100%)}
.feature-media{margin:0;aspect-ratio:16/10;border-radius:12px;overflow:hidden;background:#E4EAF6}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-body .feature-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--primary);margin-bottom:10px;
}
.feature-body .feature-kicker i{
  font-style:normal;width:22px;height:22px;border-radius:7px;background:var(--tint);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
}
.feature-body p{color:var(--ink-2);font-size:16px}
.feature-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* ---------- 入口清单 ---------- */
.entry-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.entry-item{
  display:grid;grid-template-columns:56px 1fr auto auto;align-items:center;gap:20px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 24px;box-shadow:var(--sh-sm);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.entry-item:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:#D3E0F7}
.entry-index{
  font-size:20px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.entry-main h3{margin-bottom:4px;font-size:18px}
.entry-main p{margin:0;font-size:14px;color:var(--ink-3)}
.entry-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);
  padding:8px 14px;border-radius:var(--r-pill);transition:background .2s ease,color .2s ease;
}
.entry-link:hover{background:var(--tint)}
.entry-link span{transition:transform .2s ease}
.entry-link:hover span{transform:translateX(3px)}

/* ---------- 要点清单 ---------- */
.check-list{
  list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 32px;
}
.check-list li{
  position:relative;padding:18px 20px 18px 48px;background:var(--card);border:1px solid var(--line);
  border-radius:12px;font-size:15.5px;color:var(--ink-2);line-height:1.7;box-shadow:var(--sh-sm);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.check-list li:hover{border-color:#D3E0F7;box-shadow:var(--sh-md)}
.check-list li::before{
  content:'';position:absolute;left:22px;top:24px;width:10px;height:10px;border-radius:3px;
  background:var(--accent);transform:rotate(45deg);
}
.check-list strong{color:var(--ink);font-weight:600}
.section-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:var(--sp-4)}
.section-foot .foot-note{font-size:14px;color:var(--ink-3)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item:hover{border-color:#D3E0F7}
.faq-item.open{border-color:rgba(30,86,214,.35);box-shadow:var(--sh-md)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:8px 22px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-icon{position:relative;width:20px;height:20px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{
  content:'';position:absolute;background:var(--primary);border-radius:2px;transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{left:0;right:0;top:9px;height:2px}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-item.open .faq-icon::before{background:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 22px 22px;font-size:15.5px;line-height:1.85;color:var(--ink-2)}

/* ---------- CTA ---------- */
.cta-band{
  display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center;
  background:var(--tint);border:1px solid rgba(30,86,214,.2);border-radius:var(--r-hero);
  padding:40px;box-shadow:var(--sh-sm);
}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);margin-bottom:12px}
.cta-band p{color:var(--ink-2);font-size:16px;max-width:560px}
.cta-side{display:flex;flex-direction:column;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-sm)}
.subscribe-form label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:8px}
.field-row{display:flex;gap:10px}
.field-row input{
  flex:1;min-width:0;height:44px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink);font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field-row input::placeholder{color:var(--ink-3)}
.field-row input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--tint)}
.field-row input.invalid{border-color:var(--danger);box-shadow:0 0 0 3px rgba(229,72,77,.14)}
.field-hint{font-size:13px;color:var(--ink-3);margin:10px 0 0}
.field-hint.error{color:var(--danger)}
.field-hint.success{color:#0E7C88}
.cta-side .btn-outline{width:100%}

/* ---------- 页脚 ---------- */
.site-footer{background:#0E1A2B;color:#B9C6DA;padding:64px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .brand-text{color:#fff}
.site-footer .brand-text small{color:#8494AB}
.footer-about p{margin-top:16px;font-size:14.5px;line-height:1.85;color:#94A5BE;max-width:360px}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin:0 0 16px}
.footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14.5px;color:#94A5BE;transition:color .2s ease}
.footer-links a:hover{color:var(--accent)}
.footer-contact p{font-size:14.5px;line-height:1.85;color:#94A5BE;margin:0 0 10px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:#7F90AB;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-grid{gap:40px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .hero{padding:40px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{max-width:520px}
  .hero-card{aspect-ratio:16/11;max-height:none}
  .feature-row{grid-template-columns:1fr;gap:24px}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .entry-item{grid-template-columns:44px 1fr auto;row-gap:12px}
  .entry-item .entry-link{grid-column:2 / -1;justify-self:start;padding-left:0}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .nav-links,.search-box{display:none}
  .menu-toggle{display:inline-flex}
  .header-inner{height:56px}
  .brand-text{font-size:16px}
  .section{padding:48px 0}
  .section-head{margin-bottom:32px}
  .check-list{grid-template-columns:1fr}
  .entry-item{grid-template-columns:36px 1fr;padding:18px}
  .entry-item .tag{grid-column:2;justify-self:start}
  .entry-main h3{font-size:16.5px}
  .cta-band{padding:24px}
  .field-row{flex-direction:column}
  .field-row .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  h1{font-size:26px}
  .hero-stats{flex-direction:column;align-items:flex-start;gap:14px}
  .hero-stats div{padding:0;border-left:0}
  .hero-stats strong{font-size:21px}
  .hero-actions .btn{width:100%}
  .btn-lg{height:48px;padding:0 22px;font-size:15px}
  .faq-q{font-size:16px;padding:8px 16px}
  .faq-a-inner{padding:0 16px 18px}
}

/* roulang page: category2 */
:root{
  --primary:#1E56D6;
  --primary-deep:#123A9B;
  --tint:#E8EFFF;
  --accent:#FF6A2A;
  --accent-deep:#E5551A;
  --cyan:#16A6B6;
  --cyan-deep:#0E7C88;
  --bg:#F6F8FC;
  --bg-alt:#EEF3FB;
  --card:#FFFFFF;
  --ink:#0F1B2D;
  --ink-2:#4A5A72;
  --ink-3:#8494AB;
  --line:#E3E9F2;
  --ink-band:#0E1A2B;
  --r-card:16px;
  --r-btn:12px;
  --shadow-sm:0 1px 2px rgba(16,32,64,.06);
  --shadow-md:0 8px 24px -12px rgba(16,32,64,.18);
  --shadow-lg:0 24px 48px -24px rgba(16,32,64,.28);
  --header-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--accent)}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(30,86,214,.38);outline-offset:2px;border-radius:8px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1200px){.container{padding:0 32px}}
section[id],div[id]{scroll-margin-top:132px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  position:relative;width:34px;height:34px;flex:0 0 auto;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--shadow-sm);
}
.brand-mark::after{
  content:"";position:absolute;left:8px;right:8px;top:50%;height:2px;border-radius:2px;
  background:rgba(255,255,255,.95);
  box-shadow:0 -6px 0 rgba(255,255,255,.62),0 6px 0 rgba(255,255,255,.34);
  transform:translateY(-50%) skewX(-18deg);
}
.brand-text{display:flex;flex-direction:column;font-size:17px;font-weight:700;line-height:1.2;letter-spacing:.01em}
.brand-text small{font-size:11px;font-weight:400;color:var(--ink-3);letter-spacing:.04em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  padding:8px 14px;border-radius:999px;font-size:15px;color:var(--ink-2);white-space:nowrap;
  transition:background-color .18s ease,color .18s ease;
}
.nav-links a:hover{background:var(--tint);color:var(--primary-deep)}
.nav-links a.active{background:var(--tint);color:var(--primary);font-weight:600}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-toggle{
  height:36px;padding:0 14px;border-radius:10px;font-size:14px;color:var(--ink-2);
  border:1px solid var(--line);background:#fff;transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.search-toggle:hover{background:var(--tint);color:var(--primary);border-color:rgba(30,86,214,.22)}
.header-search{display:none}
.header-search.open{display:block}
.header-search input{
  height:40px;width:250px;padding:0 14px;border:1px solid var(--line);border-radius:12px;
  background:#fff;color:var(--ink);font-size:14px;
}
.header-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--tint)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-lg{height:52px;padding:0 28px;font-size:16px;border-radius:999px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:var(--tint);color:var(--primary-deep);transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.btn-outline:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--primary)}
.btn-ghost:hover{background:var(--tint);color:var(--primary-deep)}

/* ---------- hero ---------- */
.hero-cat{position:relative;overflow:hidden;background:var(--ink-band);padding:64px 0 56px}
.hero-cat-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.5;
}
.hero-cat::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(9,20,40,.94) 0%,rgba(11,27,56,.82) 48%,rgba(11,27,56,.5) 100%);
}
.hero-cat-inner{position:relative;z-index:2;display:grid;gap:36px;grid-template-columns:1fr}
@media (min-width:1024px){
  .hero-cat{padding:76px 0 64px}
  .hero-cat-inner{grid-template-columns:1.3fr .7fr;gap:48px;align-items:center}
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.02em;
  color:#fff;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);
  padding:6px 14px;border-radius:999px;margin-bottom:20px;
}
.hero-cat h1{
  color:#fff;font-size:clamp(28px,4.2vw,46px);line-height:1.2;letter-spacing:.01em;
  margin-bottom:16px;max-width:660px;
}
.hero-lead{color:rgba(255,255,255,.78);font-size:17px;max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:36px}
.hero-stats li{display:flex;flex-direction:column;padding:0 26px;border-left:1px solid rgba(255,255,255,.22)}
.hero-stats li:first-child{padding-left:0;border-left:0}
.hero-stats strong{font-size:24px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;line-height:1.15}
.hero-stats span{font-size:13px;color:rgba(255,255,255,.66)}
.hero-panel{
  background:rgba(255,255,255,.97);border-radius:20px;padding:24px;
  box-shadow:var(--shadow-lg);color:var(--ink);
}
.hero-panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.hero-panel-head h2{font-size:17px}
.live-dot{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  color:var(--cyan-deep);background:rgba(22,166,182,.12);padding:5px 12px;border-radius:999px;
}
.live-dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.hero-panel-list li{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:14px}
.hero-panel-list li:last-child{border-bottom:0}
.hp-time{font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;flex:0 0 auto}
.hp-name{flex:1 1 auto;color:var(--ink);font-weight:500}
.hp-tag{flex:0 0 auto;font-size:12px;color:var(--ink-3)}
.hero-panel .btn{width:100%;margin-top:18px}

/* ---------- anchor bar ---------- */
.anchor-bar{background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm);z-index:50}
@media (min-width:1024px){.anchor-bar{position:sticky;top:var(--header-h)}}
.anchor-inner{display:flex;align-items:center;gap:8px;padding:12px 0;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-label{flex:0 0 auto;font-size:13px;color:var(--ink-3);margin-right:4px}
.pill{
  flex:0 0 auto;padding:8px 16px;border-radius:999px;font-size:14px;
  background:var(--bg-alt);color:var(--ink-2);border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.pill:hover{background:var(--tint);color:var(--primary);border-color:rgba(30,86,214,.18)}
.pill-accent{background:var(--accent);color:#fff}
.pill-accent:hover{background:var(--accent-deep);color:#fff;border-color:transparent}

/* ---------- sections ---------- */
.section{padding:48px 0}
@media (min-width:1024px){.section{padding:82px 0}}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:730px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--primary);background:var(--tint);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.section-head h2{font-size:clamp(24px,3vw,32px);margin-bottom:14px}
.section-head p{color:var(--ink-2);font-size:16px}

/* ---------- grid / card ---------- */
.grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:640px){
  .grid-2{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:1024px){
  .grid-3{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(4,1fr)}
}
.card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:#CBD9F2}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px}
.card-body p{color:var(--ink-2);font-size:15px}
.tag{
  display:inline-flex;align-items:center;align-self:flex-start;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;
  background:var(--tint);color:var(--primary);
}
.tag-cyan{background:rgba(22,166,182,.12);color:var(--cyan-deep)}
.mini-list{display:flex;flex-direction:column;gap:9px;margin-top:2px}
.mini-list li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2)}
.mini-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--accent);
}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:4px}
.timeline::before{
  content:"";position:absolute;left:27px;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(255,106,42,.5),rgba(30,86,214,.24));
}
.timeline-item{position:relative;padding-left:88px;padding-bottom:36px}
.timeline-item:last-child{padding-bottom:0}
.timeline-dot{
  position:absolute;left:0;top:0;width:56px;height:56px;border-radius:50%;
  background:#fff;border:2px solid var(--accent);color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:16px;font-variant-numeric:tabular-nums;
  box-shadow:var(--shadow-sm);z-index:2;
}
.timeline-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.timeline-body:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:#CBD9F2}
.timeline-body h3{font-size:18px;margin-bottom:10px}
.timeline-body p{color:var(--ink-2);font-size:15px}
.timeline-meta{display:inline-flex;margin-top:14px;font-size:12px;font-weight:600;color:var(--primary);background:var(--tint);border-radius:999px;padding:5px 12px}
@media (max-width:639px){
  .timeline::before{left:19px}
  .timeline-item{padding-left:60px;padding-bottom:28px}
  .timeline-dot{width:40px;height:40px;font-size:14px}
  .timeline-body{padding:18px 18px 20px}
}

/* ---------- scene ---------- */
.scene-card{
  display:flex;gap:16px;padding:22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:#CBD9F2}
.scene-icon{
  flex:0 0 auto;width:44px;height:44px;border-radius:12px;background:var(--tint);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
}
.scene-card h3{font-size:17px;margin-bottom:8px}
.scene-card p{color:var(--ink-2);font-size:15px}

/* ---------- dark band ---------- */
.dark-band{background:var(--ink-band);color:rgba(255,255,255,.72);padding:56px 0}
@media (min-width:1024px){.dark-band{padding:80px 0}}
.dark-band h2{color:#fff;font-size:clamp(24px,3vw,32px);margin-bottom:14px}
.dark-band .lead{color:rgba(255,255,255,.7);font-size:16px;max-width:640px}
.stat-grid{display:grid;gap:24px;grid-template-columns:repeat(2,1fr);margin-top:40px}
@media (min-width:1024px){.stat-grid{grid-template-columns:repeat(4,1fr);gap:32px}}
.stat-item{border-top:1px solid rgba(255,255,255,.16);padding-top:18px}
.stat-item strong{display:block;font-size:30px;font-weight:700;color:#fff;line-height:1.1;font-variant-numeric:tabular-nums}
.stat-item span{font-size:14px;color:rgba(255,255,255,.62)}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item[open]{border-color:#CBD9F2;box-shadow:var(--shadow-md)}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:22px;line-height:1;color:var(--primary);
  transition:transform .2s ease,color .2s ease;
}
.faq-item[open] summary{color:var(--primary-deep)}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--accent)}
.faq-body{padding:0 22px 20px;color:var(--ink-2);font-size:15px;line-height:1.8}

/* ---------- cta ---------- */
.cta-band{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:32px;box-shadow:var(--shadow-md);
  display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;
}
@media (min-width:1024px){.cta-band{padding:40px 44px;border-left:4px solid var(--accent)}}
.cta-copy{flex:1 1 380px;min-width:260px}
.cta-copy h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:12px}
.cta-copy p{color:var(--ink-2);font-size:15px;max-width:560px}
.cta-form{flex:0 1 420px;min-width:260px;display:flex;gap:10px;flex-wrap:wrap}
.cta-form input{
  flex:1 1 200px;height:44px;padding:0 16px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--ink);font-size:15px;
}
.cta-form input::placeholder{color:var(--ink-3)}
.cta-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--tint)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-band);color:rgba(255,255,255,.72);padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px}}
.site-footer .brand{color:#fff}
.site-footer .brand:hover{color:#fff}
.site-footer .brand-text{color:#fff}
.site-footer .brand-text small{color:rgba(255,255,255,.5)}
.footer-about p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62)}
.footer-grid h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.68);font-size:14px}
.footer-links a:hover{color:var(--accent)}
.footer-contact p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin-bottom:8px}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ---------- responsive header ---------- */
@media (max-width:1023px){
  .header-inner{height:auto;padding:10px 0;flex-wrap:wrap;gap:12px}
  .nav-links{
    order:3;flex:1 0 100%;margin-left:0;overflow-x:auto;
    scrollbar-width:none;-ms-overflow-style:none;padding-bottom:2px;
  }
  .nav-links::-webkit-scrollbar{display:none}
  .brand-text{font-size:15px}
  .brand-text small{font-size:10px}
  .header-actions{margin-left:auto}
}
@media (max-width:767px){
  .search-toggle{display:none}
  .header-search{display:none!important}
  .hero-stats li{padding:0 16px}
  .hero-stats strong{font-size:20px}
  .hero-stats span{font-size:12px}
  .cta-band{padding:24px}
}

/* roulang page: category3 */
:root{
    --primary:#1E56D6;
    --primary-deep:#123A9B;
    --tint:#E8EFFF;
    --accent:#FF6A2A;
    --cyan:#16A6B6;
    --cyan-tint:#E4F6F8;
    --bg:#F6F8FC;
    --bg-alt:#EEF3FB;
    --card:#FFFFFF;
    --ink:#0F1B2D;
    --muted:#4A5A72;
    --weak:#8494AB;
    --line:#E3E9F2;
    --deep:#0E1A2B;
    --r-card:16px;
    --r-btn:12px;
    --shadow-sm:0 1px 2px rgba(16,32,64,.06);
    --shadow-md:0 8px 24px -12px rgba(16,32,64,.18);
    --shadow-lg:0 24px 48px -24px rgba(16,32,64,.28);
    --s1:8px; --s2:16px; --s3:24px; --s4:32px; --s5:48px; --s6:64px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:17px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.3}
  p{margin:0 0 1.2em}
  p:last-child{margin-bottom:0}
  ul{margin:0;padding:0;list-style:none}
  :focus-visible{outline:3px solid rgba(30,86,214,.45);outline-offset:2px;border-radius:6px}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
  @media (max-width:640px){ .container{padding:0 16px} body{font-size:16px} }

  /* ============ header ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;gap:20px;height:64px;position:relative}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .brand-mark{
    width:34px;height:34px;border-radius:11px;flex:0 0 auto;position:relative;
    background:linear-gradient(135deg,var(--primary),var(--cyan));
    box-shadow:0 6px 14px -6px rgba(30,86,214,.7);
  }
  .brand-mark::after{
    content:"";position:absolute;left:8px;right:8px;top:50%;height:3px;margin-top:-1.5px;
    border-radius:2px;background:rgba(255,255,255,.9);
  }
  .brand-mark::before{
    content:"";position:absolute;left:50%;top:7px;bottom:7px;width:3px;margin-left:-1.5px;
    border-radius:2px;background:rgba(255,255,255,.45);
  }
  .brand-text{display:flex;flex-direction:column;font-weight:700;font-size:16px;line-height:1.2;white-space:nowrap}
  .brand-text small{font-size:11px;font-weight:500;color:var(--weak);letter-spacing:.03em;margin-top:2px}
  .nav-links{display:flex;align-items:center;gap:4px}
  .nav-links a{
    display:inline-block;padding:8px 14px;border-radius:999px;
    font-size:15px;font-weight:500;color:var(--muted);
    transition:background .2s ease,color .2s ease;
    white-space:nowrap;
  }
  .nav-links a:hover{background:var(--tint);color:var(--primary-deep)}
  .nav-links a.active{background:var(--tint);color:var(--primary);font-weight:600}
  .header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
  .search-box{
    width:0;opacity:0;overflow:hidden;transition:width .28s ease,opacity .28s ease;
  }
  .search-box.is-open{width:250px;opacity:1}
  .search-box input{
    width:100%;height:38px;border-radius:999px;border:1px solid var(--line);
    background:#fff;padding:0 16px;font-size:14px;transition:border-color .2s,box-shadow .2s;
  }
  .search-box input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--tint)}
  .nav-toggle{
    display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
    background:#fff;align-items:center;justify-content:center;cursor:pointer;transition:.2s;
  }
  .nav-toggle:hover{background:var(--tint);border-color:#CFDBF5}
  .nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--primary-deep);position:relative}
  .nav-toggle span::before,.nav-toggle span::after{
    content:"";position:absolute;left:0;width:16px;height:2px;border-radius:2px;background:var(--primary-deep);
  }
  .nav-toggle span::before{top:-5px}
  .nav-toggle span::after{top:5px}

  @media (max-width:1023px){
    .nav-links{
      position:absolute;left:16px;right:16px;top:calc(100% + 10px);
      flex-direction:column;align-items:stretch;gap:2px;
      background:#fff;border:1px solid var(--line);border-radius:16px;
      box-shadow:var(--shadow-lg);padding:10px;display:none;
    }
    .site-header.nav-open .nav-links{display:flex}
    .nav-links a{padding:12px 14px;border-radius:12px;font-size:15px}
    .nav-toggle{display:inline-flex}
    .search-box{display:none}
    .header-inner{height:56px;gap:12px}
    .brand-text{font-size:15px}
  }

  /* ============ buttons ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--r-btn);font-weight:600;font-size:15px;
    padding:0 22px;height:46px;border:1px solid transparent;cursor:pointer;
    transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
    white-space:nowrap;
  }
  .btn-primary{
    background:var(--accent);color:#fff;border-radius:999px;
    box-shadow:0 10px 22px -12px rgba(255,106,42,.85);
  }
  .btn-primary:hover{filter:brightness(.94);transform:translateY(-1px);box-shadow:0 16px 28px -14px rgba(255,106,42,.9)}
  .btn-primary:active{transform:translateY(0);filter:brightness(.9)}
  .btn-outline{background:#fff;color:var(--primary);border-color:#C9D8F8}
  .btn-outline:hover{background:var(--tint);border-color:var(--primary)}
  .btn-outline:active{background:#DCE7FF}
  .btn-ghost{background:transparent;color:var(--primary)}
  .btn-ghost:hover{background:var(--tint)}
  .btn-sm{height:38px;padding:0 16px;font-size:14px}

  /* ============ badges ============ */
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
    font-size:12px;font-weight:600;letter-spacing:.02em;
    background:var(--tint);color:var(--primary-deep);
  }
  .badge-cyan{background:var(--cyan-tint);color:#0E7B86}
  .badge-accent{background:#FFEDE4;color:#C74A12}

  /* ============ hero ============ */
  .hero{position:relative;overflow:hidden;background:var(--bg-alt)}
  .hero-bg{
    position:absolute;inset:0;
    background-image:url(/assets/images/backpic/back-1.webp);
    background-size:cover;background-position:center;
    opacity:.16;
  }
  .hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(246,248,252,.35) 0%,rgba(246,248,252,.92) 78%,var(--bg-alt) 100%);
  }
  .hero-inner{
    position:relative;z-index:2;
    display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
    padding:72px 0 80px;
  }
  .hero-copy h1{
    font-size:clamp(28px,4.2vw,46px);font-weight:700;line-height:1.2;
    color:var(--primary-deep);margin:18px 0 16px;
  }
  .hero-sub{font-size:17px;color:var(--muted);max-width:34ch;margin-bottom:28px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
  .hero-stats{display:flex;border-top:1px solid var(--line);padding-top:20px}
  .hero-stats > div{
    padding-right:24px;margin-right:24px;border-right:1px solid var(--line);
    display:flex;flex-direction:column;
  }
  .hero-stats > div:last-child{border-right:0;margin-right:0;padding-right:0}
  .hero-stats b{font-size:22px;color:var(--primary-deep);font-variant-numeric:tabular-nums;line-height:1.3}
  .hero-stats span{font-size:13px;color:var(--weak)}
  .hero-visual{display:flex;justify-content:center}
  .cover-frame{
    position:relative;width:100%;max-width:320px;aspect-ratio:9/16;
    border-radius:20px;overflow:hidden;border:4px solid #fff;
    box-shadow:var(--shadow-lg);background:#DCE4F3;
  }
  .cover-frame::before{
    content:"";position:absolute;top:0;left:0;right:0;height:5px;background:var(--accent);z-index:2;
  }
  .cover-frame img{width:100%;height:100%;object-fit:cover}
  .cover-tag{
    position:absolute;right:12px;bottom:12px;z-index:2;
    background:rgba(0,0,0,.5);color:#fff;font-size:12px;
    padding:5px 12px;border-radius:999px;backdrop-filter:blur(4px);
  }
  @media (max-width:1023px){
    .hero-inner{grid-template-columns:1fr;gap:32px;padding:48px 0 56px}
    .hero-sub{max-width:none}
  }
  @media (max-width:520px){
    .hero-stats > div{padding-right:14px;margin-right:14px}
    .hero-stats b{font-size:18px}
    .hero-stats span{font-size:12px}
  }

  /* ============ sections ============ */
  .section{padding:80px 0}
  .section--alt{background:var(--bg-alt)}
  .section--tight{padding:56px 0}
  @media (max-width:640px){ .section{padding:48px 0} .section--tight{padding:40px 0} }
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
  .section-head h2{
    font-size:clamp(22px,2.7vw,32px);font-weight:700;color:var(--ink);
    padding-left:16px;position:relative;
  }
  .section-head h2::before{
    content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--primary);
  }
  .section-head p{margin:6px 0 0;color:var(--muted);font-size:15px;padding-left:16px}
  @media (max-width:640px){ .section-head{flex-direction:column;align-items:flex-start;margin-bottom:28px} }

  /* ============ toc ============ */
  .toc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .toc-card{
    display:flex;gap:14px;align-items:flex-start;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    padding:20px;box-shadow:var(--shadow-sm);
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .toc-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:#CFDBF5}
  .toc-num{
    flex:0 0 auto;width:32px;height:32px;border-radius:10px;
    background:var(--tint);color:var(--primary);font-weight:700;font-size:14px;
    display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
  }
  .toc-card b{display:block;font-size:16px;margin-bottom:4px}
  .toc-card span{font-size:14px;color:var(--weak);line-height:1.6}
  @media (max-width:900px){ .toc-grid{grid-template-columns:1fr} }

  /* ============ feature rows ============ */
  .feature{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
  .feature + .feature{margin-top:72px}
  .feature.reverse .feature-media{order:2}
  .feature-media img{
    width:100%;aspect-ratio:16/10;object-fit:cover;
    border-radius:var(--r-card);border:1px solid var(--line);box-shadow:var(--shadow-md);
  }
  .feature-body h3{font-size:21px;font-weight:600;margin:12px 0 14px}
  .feature-body p{color:var(--muted);font-size:16px}
  .dot-list{margin:20px 0 0;display:grid;gap:10px}
  .dot-list li{position:relative;padding-left:20px;font-size:15px;color:var(--muted)}
  .dot-list li::before{
    content:"";position:absolute;left:0;top:.6em;width:8px;height:8px;border-radius:2px;background:var(--accent);
  }
  .quote{
    background:var(--tint);border-left:3px solid var(--primary);border-radius:0 12px 12px 0;
    padding:16px 20px;color:var(--primary-deep);font-size:15px;margin-top:22px;
  }
  @media (max-width:900px){
    .feature{grid-template-columns:1fr;gap:24px}
    .feature.reverse .feature-media{order:0}
    .feature + .feature{margin-top:48px}
  }

  /* ============ table ============ */
  .table-wrap{
    overflow-x:auto;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-card);box-shadow:var(--shadow-sm);
  }
  .compare-table{width:100%;min-width:760px;border-collapse:collapse}
  .compare-table thead th{
    background:var(--tint);color:var(--primary-deep);
    font-size:14px;font-weight:600;text-align:left;padding:16px 20px;white-space:nowrap;
  }
  .compare-table tbody td{
    padding:16px 20px;font-size:15px;color:var(--muted);border-top:1px solid var(--line);
    vertical-align:top;
  }
  .compare-table tbody tr:nth-child(even){background:#FAFBFE}
  .compare-table tbody td:first-child{color:var(--ink);font-weight:600;white-space:nowrap}
  .table-note{font-size:13px;color:var(--weak);margin-top:14px}

  /* ============ dark panel ============ */
  .dark-panel{
    background:var(--primary-deep);color:#fff;border-radius:20px;
    padding:48px;display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;
    box-shadow:var(--shadow-lg);
  }
  .dark-panel h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-bottom:14px}
  .dark-panel p{color:rgba(255,255,255,.78);font-size:16px}
  .dark-panel .badge{background:rgba(255,255,255,.14);color:#fff}
  .meter-list{display:grid;gap:20px;margin-top:8px}
  .meter-row .meter-top{display:flex;justify-content:space-between;font-size:14px;margin-bottom:8px;color:rgba(255,255,255,.9)}
  .meter-row .meter-top b{font-variant-numeric:tabular-nums;color:#fff}
  .meter{height:8px;border-radius:999px;background:rgba(255,255,255,.18);overflow:hidden}
  .meter > span{display:block;height:100%;border-radius:999px;background:var(--accent)}
  @media (max-width:900px){
    .dark-panel{grid-template-columns:1fr;gap:32px;padding:32px 24px}
  }

  /* ============ faq ============ */
  .faq-list{max-width:900px}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;
    margin-bottom:12px;overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease;
  }
  .faq-item[open]{border-color:#CFDBF5;box-shadow:var(--shadow-md)}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:17px 22px;font-size:16px;font-weight:600;color:var(--ink);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"+";flex:0 0 auto;font-size:20px;font-weight:600;color:var(--primary);
    transition:transform .25s ease;
  }
  .faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
  .faq-item summary:hover{background:#F7F9FF}
  .faq-body{padding:0 22px 20px;color:var(--muted);font-size:15px;line-height:1.85}
  @media (max-width:640px){ .faq-item summary{padding:15px 16px;font-size:15px} .faq-body{padding:0 16px 18px} }

  /* ============ recommend cards ============ */
  .rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .rec-card{
    display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .rec-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#CFDBF5}
  .rec-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
  .rec-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
  .rec-body h3{font-size:17px;font-weight:600;margin:10px 0 8px}
  .rec-body p{font-size:14px;color:var(--muted);line-height:1.7;flex:1}
  .rec-more{margin-top:16px;font-size:14px;font-weight:600;color:var(--primary)}
  .rec-more::after{content:"→";margin-left:6px;transition:margin-left .2s ease}
  .rec-card:hover .rec-more::after{margin-left:10px}
  @media (max-width:900px){ .rec-grid{grid-template-columns:1fr 1fr} }
  @media (max-width:640px){ .rec-grid{grid-template-columns:1fr} }

  /* ============ cta band ============ */
  .cta-band{
    background:var(--tint);border:1px solid #CFDBF5;border-radius:20px;
    padding:44px;display:grid;grid-template-columns:1.15fr 1fr;gap:36px;align-items:center;
  }
  .cta-band h2{font-size:clamp(21px,2.4vw,28px);font-weight:700;color:var(--primary-deep);margin-bottom:12px}
  .cta-band p{color:var(--muted);font-size:15px;max-width:44ch}
  .cta-form{display:flex;gap:12px;flex-wrap:wrap}
  .field{
    flex:1 1 200px;min-width:0;height:46px;border-radius:var(--r-btn);
    border:1px solid var(--line);background:#fff;padding:0 16px;font-size:15px;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .field::placeholder{color:var(--weak)}
  .field:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,86,214,.18)}
  .cta-hint{font-size:13px;color:var(--weak);margin-top:12px;min-height:20px}
  .cta-hint.is-error{color:#E5484D}
  .cta-hint.is-ok{color:#0E7B86}
  @media (max-width:900px){ .cta-band{grid-template-columns:1fr;padding:28px 22px;gap:24px} }

  /* ============ footer ============ */
  .site-footer{background:var(--deep);color:#C7D2E4;padding:64px 0 0;margin-top:0}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
  .site-footer .brand{margin-bottom:18px}
  .site-footer .brand-text{color:#fff}
  .site-footer .brand-text small{color:#8494AB}
  .footer-about p{font-size:14px;color:#9FB0C7;line-height:1.8;max-width:38ch}
  .site-footer h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600}
  .footer-links li{margin-bottom:11px}
  .footer-links a{font-size:14px;color:#A9B7CC;transition:color .2s ease}
  .footer-links a:hover{color:var(--accent)}
  .footer-contact p{font-size:14px;color:#9FB0C7;line-height:1.8;margin-bottom:10px}
  .footer-bottom{
    margin-top:48px;border-top:1px solid rgba(255,255,255,.1);
    padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
    font-size:13px;color:#8494AB;
  }
  @media (max-width:900px){ .footer-grid{grid-template-columns:1fr 1fr;gap:32px} }
  @media (max-width:560px){ .footer-grid{grid-template-columns:1fr} .site-footer{padding-top:48px} }