/* roulang page: index */
:root{
  --c-primary:#1E7BD6;
  --c-primary-dark:#145EA8;
  --c-primary-light:#E8F2FD;
  --c-accent:#FF8A3D;
  --c-accent-dark:#E86F1F;
  --c-accent-light:#FFF1E6;
  --ink:#16202B;
  --text:#4A5A6A;
  --muted:#8593A2;
  --border:#E3E9F0;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --ok:#22A06B;
  --warn:#E5A100;
  --err:#D9453C;
  --r-card:14px;
  --r-sm:10px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-sm:0 2px 8px rgba(22,32,43,.06);
  --sh-hover:0 10px 24px rgba(30,123,214,.14);
  --container:1200px;
  --gap:24px;
}
*,*::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","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-dark);}
img{max-width:100%;display:block;border:0;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 4px 12px rgba(30,123,214,.22);}
.btn-primary:hover{background:#2b88e0;color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(30,123,214,.28);}
.btn-primary:active{transform:translateY(0);background:var(--c-primary-dark);}
.btn-ghost{background:#fff;color:var(--c-primary);border:1px solid var(--border);}
.btn-ghost:hover{background:var(--c-primary-light);color:var(--c-primary-dark);border-color:#c9dff6;transform:translateY(-1px);}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:#ff9a56;color:#fff;transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.text-link{font-size:15px;font-weight:600;text-decoration:underline;text-underline-offset:4px;}
.text-link:hover{color:var(--c-primary-dark);}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 9px;border-radius:6px;font-size:13px;font-weight:600;line-height:1;}
.badge-primary{background:var(--c-primary-light);color:var(--c-primary-dark);}
.badge-accent{background:var(--c-accent-light);color:var(--c-accent-dark);}
.badge-ok{background:#E7F6EF;color:var(--ok);}
.badge-warn{background:#FDF5E3;color:var(--warn);}
.badge-grey{background:#EEF2F7;color:var(--muted);}

/* ---------- 顶部导航 ---------- */
.site-header{background:#fff;border-bottom:1px solid var(--border);}
.topbar{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  background:linear-gradient(135deg,var(--c-primary),#4FA3EA);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;letter-spacing:-.5px;
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.brand-text:hover{color:var(--c-primary);}
.search{flex:1 1 auto;max-width:420px;position:relative;}
.search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;fill:var(--muted);}
.search input{
  width:100%;height:42px;border-radius:var(--r-sm);border:1px solid var(--border);
  background:#F7FAFD;padding:0 14px 0 36px;color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.search input::placeholder{color:var(--muted);}
.search input:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(30,123,214,.14);}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}

/* ---------- 频道行 ---------- */
.channel-bar{
  position:sticky;top:0;z-index:40;background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--border);
  box-shadow:0 2px 10px rgba(22,32,43,.04);
}
.channel-scroll{display:flex;align-items:center;gap:10px;height:52px;overflow-x:auto;scrollbar-width:none;}
.channel-scroll::-webkit-scrollbar{display:none;}
.pill{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--r-pill);
  background:#F1F5FA;color:#4A5A6A;font-size:14px;font-weight:600;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.pill:hover{background:var(--c-primary-light);color:var(--c-primary-dark);}
.pill.active{background:var(--c-primary);color:#fff;}
.pill.active:hover{background:var(--c-primary-dark);color:#fff;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 12% 0%,rgba(30,123,214,.06),transparent 62%),
    radial-gradient(700px 380px at 92% 18%,rgba(255,138,61,.07),transparent 66%),
    #FBFDFF;
  border-bottom:1px solid var(--border);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(30,123,214,.10) 1px,transparent 1px);
  background-size:26px 26px;opacity:.5;
}
.hero-inner{position:relative;z-index:1;padding:72px 0 80px;}
.hero-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gap);align-items:center;}
.hero-copy{grid-column:span 6;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--c-accent-light);color:var(--c-accent-dark);font-size:13px;font-weight:600;margin-bottom:18px;
}
.hero h1{margin-bottom:16px;letter-spacing:-.3px;}
.hero-sub{font-size:17px;color:var(--text);max-width:520px;margin-bottom:26px;}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.hero-points{display:flex;flex-wrap:wrap;gap:20px;}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text);}
.hero-points .dot-mark{width:8px;height:8px;border-radius:50%;background:var(--c-primary);flex:none;}
.hero-media{grid-column:span 6;}
.hero-media-frame{
  position:relative;border-radius:18px;overflow:hidden;background:var(--c-primary-light);
  box-shadow:0 18px 40px rgba(22,32,43,.12);
}
.hero-media-frame img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.hero-media-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(30,123,214,.16),rgba(255,138,61,.12) 70%,transparent);
}
.hero-media-cap{
  position:absolute;left:16px;bottom:16px;z-index:2;
  background:rgba(255,255,255,.92);border-radius:var(--r-sm);
  padding:8px 14px;font-size:13px;font-weight:600;color:var(--ink);
}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section.alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;}
.section-desc{margin-top:10px;font-size:15px;color:var(--muted);max-width:620px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--c-primary);text-transform:uppercase;margin-bottom:10px;
}

/* ---------- 亮点卡 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);padding:24px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#D5E6F8;}
.feature-icon{
  width:44px;height:44px;border-radius:12px;background:var(--c-primary-light);color:var(--c-primary-dark);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px;margin-bottom:16px;
}
.feature-card h3{margin-bottom:8px;font-size:18px;}
.feature-card p{font-size:15px;color:var(--text);}

/* ---------- 四步流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);position:relative;}
.step-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:26px 22px;box-shadow:var(--sh-sm);transition:transform .2s ease,box-shadow .2s ease;}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.step-card::after{
  content:"";position:absolute;top:52px;right:-24px;width:24px;border-top:1px dashed #C8D8E8;
}
.step-card:last-child::after{display:none;}
.step-no{
  width:38px;height:38px;border-radius:50%;background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;margin-bottom:16px;
}
.step-card h3{font-size:18px;margin-bottom:8px;}
.step-card p{font-size:15px;}
.step-meta{margin-top:14px;font-size:13px;color:var(--muted);}

/* ---------- 奖励 Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.reward-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-sm);transition:transform .2s ease,box-shadow .2s ease;display:flex;flex-direction:column;
}
.reward-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.reward-card img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#E9F1FA;border-bottom:1px solid var(--border);}
.reward-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.reward-body h3{font-size:17px;}
.reward-body p{font-size:14px;color:var(--text);}
.reward-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:10px;}
.reward-lead{grid-column:span 2;grid-row:span 2;}
.reward-lead img{aspect-ratio:16/10;}
.reward-lead .reward-body{padding:24px;}
.reward-lead h3{font-size:22px;}
.reward-lead p{font-size:15px;}

/* ---------- 进度 + 任务 ---------- */
.progress-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gap);align-items:start;}
.progress-panel{grid-column:span 6;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-sm);}
.panel-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.panel-title h3{font-size:18px;}
.panel-title span{font-size:13px;color:var(--muted);}
.progress-item{margin-bottom:20px;}
.progress-item:last-child{margin-bottom:0;}
.progress-top{display:flex;align-items:center;justify-content:space-between;font-size:14px;margin-bottom:8px;}
.progress-top strong{color:var(--ink);font-weight:600;}
.progress-top .pct{font-weight:700;color:var(--c-primary-dark);font-variant-numeric:tabular-nums;}
.track{height:10px;border-radius:var(--r-pill);background:#EDF3FA;overflow:hidden;}
.fill{height:100%;width:0;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--c-primary),var(--c-accent));transition:width .6s ease;}
.task-panel{grid-column:span 6;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-sm);}
.task-list li{
  display:flex;align-items:flex-start;gap:14px;padding:14px 0;border-bottom:1px dashed var(--border);
}
.task-list li:last-child{border-bottom:0;padding-bottom:0;}
.task-check{
  width:22px;height:22px;border-radius:7px;border:1.5px solid #CBD8E6;flex:none;margin-top:3px;
  display:flex;align-items:center;justify-content:center;font-size:12px;color:transparent;background:#fff;
}
.task-done .task-check{background:var(--ok);border-color:var(--ok);color:#fff;}
.task-doing .task-check{border-color:var(--c-primary);background:var(--c-primary-light);color:var(--c-primary-dark);}
.task-main{flex:1;}
.task-main h4{font-size:15px;font-weight:600;color:var(--ink);margin:0 0 4px;}
.task-main p{font-size:13px;color:var(--muted);}
.task-side{display:flex;flex-direction:column;align-items:flex-end;gap:6px;flex:none;}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.news-card{display:flex;flex-direction:column;gap:12px;padding:24px;color:inherit;}
.news-card:hover .news-title{color:var(--c-primary);}
.news-title{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease;}
.news-summary{font-size:14px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding-top:6px;}
.news-meta .dot{color:#C4D2E0;}
.news-more{color:var(--c-primary);font-weight:600;}
.news-lead{grid-column:span 2;}
.news-lead .news-title{font-size:22px;-webkit-line-clamp:3;}
.empty-state{
  background:#fff;border:1px dashed #CFDDEB;border-radius:var(--r-card);
  padding:40px 24px;text-align:center;color:var(--muted);
}
.empty-state p{margin-bottom:16px;font-size:15px;}

/* ---------- 评价 ---------- */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.quote-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-sm);}
.quote-card p{font-size:15px;color:var(--text);margin-bottom:18px;}
.quote-user{display:flex;align-items:center;gap:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--c-primary-light);color:var(--c-primary-dark);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:none;
}
.quote-user strong{display:block;font-size:14px;color:var(--ink);}
.quote-user span{font-size:13px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;position:relative;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;transition:background-color .2s ease;
}
.faq-item.open{border-color:#D5E6F8;box-shadow:var(--sh-sm);}
.faq-item.open::before{background:var(--c-primary);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-q:hover{color:var(--c-primary-dark);}
.faq-arrow{
  width:22px;height:22px;flex:none;position:relative;transition:transform .25s ease;
}
.faq-arrow::before,.faq-arrow::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--c-primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-arrow::before{width:12px;height:2px;}
.faq-arrow::after{width:2px;height:12px;transition:opacity .25s ease;}
.faq-item.open .faq-arrow{transform:rotate(180deg);}
.faq-item.open .faq-arrow::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 24px 22px;font-size:15px;color:var(--text);}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,rgba(30,123,214,.06),rgba(255,138,61,.08));
  border:1px solid #DCEAF9;border-radius:20px;padding:56px 32px;text-align:center;
}
.cta-band h2{margin-bottom:12px;}
.cta-band p{max-width:640px;margin:0 auto 26px;font-size:15px;}
.cta-band .btn{margin:0 6px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#16202B;color:#A9B7C6;padding:64px 0 28px;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.10);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,#3B95E5,#7FBBEF);}
.footer-brand span{font-size:17px;font-weight:700;color:#fff;}
.footer-desc{font-size:14px;color:#93A3B4;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:#A9B7C6;font-size:14px;}
.footer-col a:hover{color:#6FB4F0;}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding-top:24px;font-size:13px;color:#7C8B9B;}
.footer-bottom a{color:#7C8B9B;}
.footer-bottom a:hover{color:#6FB4F0;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .news-lead{grid-column:span 2;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .hero-inner{padding:56px 0 64px;}
  .hero-copy{grid-column:span 12;}
  .hero-media{grid-column:span 12;}
  .hero-sub{max-width:none;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step-card::after{display:none;}
  .bento{grid-template-columns:repeat(2,1fr);}
  .reward-lead{grid-column:span 2;grid-row:auto;}
  .progress-panel,.task-panel{grid-column:span 12;}
  .quote-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .topbar{height:auto;flex-wrap:wrap;padding:12px 0;gap:12px;}
  .search{order:3;max-width:none;flex:1 1 100%;}
  .topbar-actions{margin-left:auto;}
  .brand-text{font-size:16px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .grid-4{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .news-lead{grid-column:span 1;}
  .cta-band{padding:40px 20px;}
  .cta-band .btn{margin:6px 0;width:100%;}
  .site-footer{margin-top:56px;padding-top:48px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .bento{grid-template-columns:1fr;}
  .reward-lead{grid-column:span 1;}
  .steps{grid-template-columns:1fr;}
  .hero-points{gap:12px;}
  .hero-btns .btn{width:100%;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 18px;}
}

/* roulang page: article */
:root{
  --brand:#1E7BD6;--brand-d:#145EA8;--brand-l:#E8F2FD;
  --accent:#FF8A3D;--accent-d:#E86F1F;--accent-l:#FFF1E6;
  --ink:#16202B;--text:#4A5A6A;--muted:#8593A2;
  --line:#E3E9F0;--bg:#F5F8FC;--card:#FFFFFF;
  --ok:#22A06B;--warn:#E5A100;--err:#D9453C;
  --r-card:14px;--r-sm:10px;--r-lg:20px;
  --sh:0 2px 8px rgba(22,32,43,.06);
  --sh-h:0 10px 24px rgba(30,123,214,.14);
  --sp:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-d)}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;line-height:1.35}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}

/* header */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:40}
.topbar{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);flex-shrink:0}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;font-size:15px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--brand),#3F98E8);letter-spacing:.5px;
}
.brand-text{font-size:18px;letter-spacing:.3px}
.search{display:flex;align-items:center;gap:8px;flex:1;max-width:420px;height:44px;padding:0 14px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-sm);transition:border-color .2s ease,box-shadow .2s ease}
.search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(30,123,214,.14)}
.search svg{width:18px;height:18px;fill:var(--muted);flex-shrink:0}
.search input{flex:1;border:0;background:transparent;outline:none;color:var(--ink);min-width:0}
.search input::placeholder{color:var(--muted)}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;
  border-radius:var(--r-sm);border:1px solid transparent;font-weight:600;font-size:15px;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;white-space:nowrap}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 12px rgba(30,123,214,.22)}
.btn-primary:hover{background:#2A88E0;color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(30,123,214,.28)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 12px rgba(255,138,61,.24)}
.btn-accent:hover{background:var(--accent-d);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-l);border-color:#C9DFF6;color:var(--brand-d)}
.btn-link{color:var(--brand);font-weight:600;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.btn-link:hover{color:var(--brand-d);font-weight:700}

.channel-bar{background:#fff;border-top:1px solid var(--line);position:sticky;top:0;z-index:35;transition:box-shadow .2s ease}
.channel-bar.is-stuck{box-shadow:0 6px 16px rgba(22,32,43,.07)}
.channel-scroll{display:flex;align-items:center;gap:10px;height:52px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-scroll::-webkit-scrollbar{display:none}
.pill{display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  background:var(--bg);color:var(--text);font-size:14px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease}
.pill:hover{background:var(--brand-l);color:var(--brand-d)}
.pill.active{background:var(--brand);color:#fff;box-shadow:0 4px 10px rgba(30,123,214,.24)}
.pill.active:hover{background:var(--brand-d);color:#fff}

/* page banner */
.page-banner{position:relative;background:#0F58A0 url('/assets/images/backpic/back-2.png') center/cover no-repeat;color:#fff;overflow:hidden}
.page-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(15,88,160,.94),rgba(30,123,214,.72) 55%,rgba(30,123,214,.42))}
.page-banner .container{position:relative;z-index:2;padding-top:40px;padding-bottom:44px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.78);margin-bottom:18px}
.breadcrumb a{color:rgba(255,255,255,.9)}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{opacity:.6}
.breadcrumb .current{max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#fff}
.article-title{font-size:clamp(28px,4.2vw,44px);line-height:1.25;color:#fff;max-width:26ch}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;font-size:14px;color:rgba(255,255,255,.85)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.6)}
.meta-chip{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.3);font-size:13px;font-weight:600;color:#fff}

/* layout */
main{display:block}
.section{padding:var(--sp) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:clamp(22px,2.6vw,30px)}
.section-head p{margin:8px 0 0;font-size:15px;color:var(--muted);max-width:60ch}
.layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px;align-items:start}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease}
.card:hover{box-shadow:var(--sh-h);transform:translateY(-2px);border-color:#D3E3F6}
.article-shell{padding:36px 40px 44px;border-radius:var(--r-card);background:#fff;border:1px solid var(--line);box-shadow:var(--sh)}

/* prose */
.prose-cn{max-width:760px;color:var(--text);font-size:16.5px;line-height:1.85}
.prose-cn p{margin:0 0 1.2em}
.prose-cn h2{font-size:clamp(20px,2.2vw,24px);margin:32px 0 14px;padding-left:14px;position:relative}
.prose-cn h2::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:3px;background:var(--brand)}
.prose-cn h3{font-size:20px;margin:26px 0 10px}
.prose-cn h4{font-size:17px;margin:22px 0 8px}
.prose-cn ul,.prose-cn ol{margin:0 0 1.2em;padding-left:4px}
.prose-cn ul li{position:relative;padding-left:20px;margin-bottom:8px}
.prose-cn ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--brand);opacity:.85}
.prose-cn ol{counter-reset:n;list-style:none}
.prose-cn ol li{position:relative;padding-left:28px;margin-bottom:8px;counter-increment:n}
.prose-cn ol li::before{content:counter(n);position:absolute;left:0;top:.32em;width:19px;height:19px;border-radius:6px;
  background:var(--brand-l);color:var(--brand-d);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.prose-cn blockquote{margin:22px 0;padding:16px 20px;background:var(--brand-l);border-left:3px solid var(--brand);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink)}
.prose-cn blockquote p:last-child{margin-bottom:0}
.prose-cn img{border-radius:12px;margin:22px 0;width:100%;height:auto;background:var(--brand-l)}
.prose-cn figure{margin:22px 0}
.prose-cn figcaption{margin-top:8px;font-size:13px;color:var(--muted);text-align:center}
.prose-cn table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:22px 0;font-size:15px}
.prose-cn th,.prose-cn td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap}
.prose-cn th{background:var(--bg);color:var(--ink)}
.prose-cn a{text-decoration:underline;text-underline-offset:3px}
.prose-cn code{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:14px;color:var(--brand-d)}
.prose-cn hr{border:0;border-top:1px solid var(--line);margin:32px 0}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:34px 0 0;padding-top:26px;border-top:1px solid var(--line)}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:var(--brand-l);
  color:var(--brand-d);font-size:13px;font-weight:600;border:1px solid #D5E7F9}
.tag.warm{background:var(--accent-l);color:var(--accent-d);border-color:#FBDFC9}

.actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* empty */
.empty-state{text-align:center;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--r-card);background:var(--bg)}
.empty-state svg{width:44px;height:44px;fill:var(--muted);margin:0 auto 14px}
.empty-state h3{font-size:20px;margin-bottom:8px}
.empty-state p{margin:0 0 20px;color:var(--muted);font-size:15px}

/* sidebar */
.sidebar{position:sticky;top:128px;display:grid;gap:20px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);padding:22px}
.side-card h3{font-size:17px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:3px;background:var(--brand)}
.side-list li+li{margin-top:10px}
.side-list a{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text);padding:8px 10px;border-radius:var(--r-sm);transition:background .2s ease,color .2s ease}
.side-list a:hover{background:var(--brand-l);color:var(--brand-d)}
.side-list .num{flex-shrink:0;width:22px;height:22px;border-radius:6px;background:var(--accent-l);color:var(--accent-d);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:2px}
.side-note{background:linear-gradient(160deg,var(--brand-l),#F7FBFF);border:1px solid #D9E9F9;border-radius:var(--r-card);padding:22px}
.side-note p{margin:0 0 14px;font-size:14px;color:var(--text)}
.side-thumb{border-radius:var(--r-sm);overflow:hidden;margin-bottom:14px;background:var(--brand-l)}
.side-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* related channel cards */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.ch-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);overflow:hidden;transition:box-shadow .2s ease,transform .2s ease}
.ch-card:hover{box-shadow:var(--sh-h);transform:translateY(-2px)}
.ch-card img{aspect-ratio:16/9;object-fit:cover;background:var(--brand-l)}
.ch-card .body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.ch-card h3{font-size:18px}
.ch-card p{margin:0;font-size:14.5px;color:var(--text);line-height:1.7}
.ch-card .btn{margin-top:auto;align-self:flex-start;height:40px;padding:0 18px;font-size:14px}

/* cta */
.cta-block{background:linear-gradient(140deg,var(--brand-l),#F4F9FF 60%);border:1px solid #D9E9F9;border-radius:var(--r-lg);
  padding:48px 24px;text-align:center}
.cta-block h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.cta-block p{margin:0 auto 26px;max-width:56ch;font-size:16px;color:var(--text)}

/* footer */
.site-footer{background:#101A24;color:#B9C6D4;margin-top:var(--sp)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding:64px 0 40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px}
.footer-brand .brand-mark{width:34px;height:34px;font-size:13px;border-radius:10px}
.footer-desc{margin:0;font-size:14px;line-height:1.8;color:#93A3B3;max-width:42ch}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul li+li{margin-top:10px}
.footer-col a{color:#B9C6D4;font-size:14px}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;flex-wrap:wrap;
  justify-content:space-between;gap:10px;font-size:13px;color:#8593A2}

@media (max-width:1279px){
  :root{--sp:72px}
  .layout{gap:32px}
}
@media (max-width:1023px){
  :root{--sp:64px}
  .layout{grid-template-columns:1fr}
  .sidebar{position:static;top:auto}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:52px 0 32px}
}
@media (max-width:767px){
  :root{--sp:48px}
  .container{padding:0 16px}
  .topbar{height:auto;flex-wrap:wrap;padding:12px 0;gap:12px}
  .brand-text{font-size:16px}
  .search{order:3;flex:1 1 100%;max-width:none}
  .topbar-actions{margin-left:auto}
  .page-banner .container{padding-top:28px;padding-bottom:32px}
  .article-shell{padding:24px 18px 30px}
  .prose-cn{font-size:16px}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:24px}
  .grid-3{grid-template-columns:1fr}
}
@media (max-width:480px){
  .brand-text{font-size:15px}
  .btn{padding:0 18px;font-size:14px}
  .cta-block{padding:34px 18px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category1 */
:root{
  --primary:#1E7BD6;
  --primary-dark:#145EA8;
  --primary-light:#E8F2FD;
  --accent:#FF8A3D;
  --accent-dark:#E86F1F;
  --accent-light:#FFF1E6;
  --ink:#16202B;
  --text:#4A5A6A;
  --muted:#8593A2;
  --border:#E3E9F0;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --success:#22A06B;
  --warning:#E5A100;
  --danger:#D9453C;
  --radius-card:14px;
  --radius-sm:10px;
  --radius-lg:20px;
  --radius-pill:999px;
  --shadow-card:0 2px 8px rgba(22,32,43,.06);
  --shadow-hover:0 10px 24px rgba(30,123,214,.14);
  --shadow-soft:0 1px 3px rgba(22,32,43,.05);
  --section-y:88px;
  --font-base:-apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "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-base);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3;}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;}
h2{font-size:clamp(22px,2.6vw,30px);}
h3{font-size:20px;font-weight:600;line-height:1.4;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-dark);}
img{max-width:100%;display:block;border-radius:var(--radius-sm);}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

/* ---------- layout ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--section-y) 0;}
.section-alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--primary);background:var(--primary-light);border-radius:var(--radius-sm);padding:5px 12px;margin-bottom:14px;}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--text);font-size:16px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- header ---------- */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:relative;z-index:30;}
.topbar{display:flex;align-items:center;gap:24px;min-height:64px;padding:10px 0;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--ink);}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;font-size:15px;font-weight:700;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.01em;color:var(--ink);white-space:nowrap;}
.brand:hover .brand-text{color:var(--primary);}
.search{flex:1 1 auto;max-width:420px;position:relative;display:flex;align-items:center;}
.search svg{position:absolute;left:13px;width:17px;height:17px;fill:var(--muted);pointer-events:none;}
.search input{
  width:100%;height:42px;padding:0 14px 0 38px;
  border:1px solid var(--border);border-radius:var(--radius-sm);
  background:#FBFCFE;color:var(--ink);outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search input::placeholder{color:var(--muted);}
.search input:hover{border-color:#CFDBE8;}
.search input:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(30,123,214,.14);}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}

.channel-bar{position:sticky;top:0;z-index:29;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-top:1px solid var(--border);border-bottom:1px solid var(--border);box-shadow:0 1px 0 rgba(22,32,43,.02);}
.channel-scroll{display:flex;align-items:center;gap:10px;padding:9px 0;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.channel-scroll::-webkit-scrollbar{display:none;}
.pill{
  flex:0 0 auto;display:inline-flex;align-items:center;
  height:34px;padding:0 16px;border-radius:var(--radius-pill);
  background:#F1F4F9;color:#54636F;font-size:14px;font-weight:600;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.pill:hover{background:var(--primary-light);color:var(--primary-dark);}
.pill.active{background:var(--primary);color:#fff;box-shadow:0 4px 12px rgba(30,123,214,.24);}
.pill.active:hover{background:var(--primary-dark);color:#fff;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 12px rgba(30,123,214,.22);}
.btn-primary:hover{background:#2A88E0;color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(30,123,214,.26);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--primary);border-color:#CCE0F5;}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 12px rgba(255,138,61,.24);}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn-block{width:100%;}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;border-radius:6px;padding:4px 10px;line-height:1.4;}
.badge-primary{background:var(--primary-light);color:var(--primary-dark);}
.badge-accent{background:var(--accent-light);color:var(--accent-dark);}
.badge-success{background:#E6F6EF;color:var(--success);}
.badge-muted{background:#F1F4F9;color:#66757F;}
.badge-warn{background:#FDF5E3;color:#A87A00;}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;background:#EAF2FB;border-bottom:1px solid var(--border);}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.22;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(900px 420px at 12% 20%,rgba(30,123,214,.16),transparent 62%),linear-gradient(180deg,rgba(255,255,255,.72),rgba(245,248,252,.96));
}
.page-hero .container{position:relative;z-index:2;padding-top:52px;padding-bottom:52px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#BCC7D2;}
.breadcrumb .current{color:var(--text);font-weight:600;}
.page-hero h1{margin:14px 0 14px;max-width:860px;}
.page-sub{font-size:17px;color:var(--text);max-width:720px;margin-bottom:0;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px;}

/* ---------- stats strip ---------- */
.stats-strip{background:#fff;border-bottom:1px solid var(--border);}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;padding:28px 0;}
.stat{display:flex;flex-direction:column;gap:2px;padding-left:18px;border-left:3px solid var(--primary-light);}
.stat-num{font-family:"DIN Alternate","SFMono-Regular",Consolas,monospace;font-size:28px;font-weight:700;color:var(--primary);line-height:1.2;}
.stat-label{font-size:14px;color:var(--muted);}

/* ---------- 8/4 grid ---------- */
.grid-8-4{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:32px;align-items:start;}

/* ---------- steps ---------- */
.steps{position:relative;}
.step-item{position:relative;padding:0 0 36px 68px;}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:"";position:absolute;left:21px;top:48px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--primary-light),#EEF3F9);
}
.step-item:last-child::before{display:none;}
.step-node{
  position:absolute;left:0;top:0;width:44px;height:44px;border-radius:50%;
  background:var(--primary);color:#fff;font-weight:700;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(30,123,214,.22);
  font-family:"DIN Alternate",Consolas,monospace;
}
.step-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.step-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#D4E5F8;}
.step-card h3{margin-bottom:8px;}
.step-card p{color:var(--text);font-size:15px;}
.step-points{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.step-points li{position:relative;padding-left:18px;font-size:15px;color:var(--text);}
.step-points li::before{content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;background:var(--accent);}
.step-note{margin-top:14px;padding:12px 14px;border-radius:var(--radius-sm);background:var(--primary-light);color:var(--primary-dark);font-size:14px;}

/* ---------- sticky toc ---------- */
.toc{position:sticky;top:96px;}
.toc-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-card);}
.toc-card h3{font-size:16px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--border);}
.toc-list{display:flex;flex-direction:column;gap:4px;}
.toc-list a{
  display:block;padding:8px 10px;border-radius:var(--radius-sm);font-size:14px;color:var(--text);
  border-left:2px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.toc-list a:hover{background:var(--primary-light);color:var(--primary-dark);border-left-color:var(--primary);}
.toc-cta{margin-top:18px;padding-top:18px;border-top:1px solid var(--border);}
.toc-cta p{font-size:14px;color:var(--muted);margin-bottom:12px;}

/* ---------- term cards ---------- */
.term-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.term-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.term-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#D4E5F8;}
.term-card .term-icon{
  width:42px;height:42px;border-radius:12px;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.term-card .term-icon svg{width:20px;height:20px;fill:currentColor;}
.term-card h3{font-size:17px;margin-bottom:8px;}
.term-card p{font-size:14px;color:var(--text);margin-bottom:0;}

/* ---------- scenes ---------- */
.scene-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:40px;align-items:center;}
.scene-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 12px 30px rgba(22,32,43,.1);background:#E8F2FD;}
.scene-media img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.scene-list{display:flex;flex-direction:column;gap:16px;}
.scene-item{display:flex;gap:16px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);padding:20px 22px;box-shadow:var(--shadow-soft);transition:box-shadow .2s ease,transform .2s ease;}
.scene-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.scene-index{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;background:var(--accent-light);color:var(--accent-dark);
  font-weight:700;display:flex;align-items:center;justify-content:center;font-family:"DIN Alternate",Consolas,monospace;
}
.scene-item h3{font-size:17px;margin-bottom:6px;}
.scene-item p{font-size:14px;margin-bottom:0;}

/* ---------- compare table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-card);background:#fff;box-shadow:var(--shadow-card);}
table{width:100%;border-collapse:collapse;min-width:620px;}
thead th{
  background:#F7FAFD;color:var(--ink);font-size:14px;font-weight:700;text-align:left;
  padding:14px 20px;border-bottom:1px solid var(--border);white-space:nowrap;
}
tbody td{padding:14px 20px;font-size:15px;border-bottom:1px solid #EEF2F7;color:var(--text);}
tbody tr:nth-child(even){background:#FBFCFE;}
tbody tr:hover{background:var(--primary-light);}
tbody tr:last-child td{border-bottom:none;}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;margin:0 auto;}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-soft);transition:box-shadow .2s ease,border-color .2s ease;}
.faq-item:hover{box-shadow:var(--shadow-hover);}
.faq-item.open{border-color:#CFE2F7;box-shadow:var(--shadow-hover);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:none;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);text-align:left;position:relative;
}
.faq-q::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;background:var(--primary);opacity:0;transition:opacity .2s ease;}
.faq-item.open .faq-q::before{opacity:1;}
.faq-icon{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .25s ease;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;transform:translate(-50%,-50%);}
.faq-icon::before{width:12px;height:2px;}
.faq-icon::after{width:2px;height:12px;transition:opacity .2s ease;}
.faq-item.open .faq-icon{transform:rotate(180deg);}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 22px 20px;font-size:15px;color:var(--text);margin:0;}

/* ---------- cta ---------- */
.cta-block{
  background:linear-gradient(140deg,rgba(30,123,214,.08),rgba(255,138,61,.08)),#fff;
  border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:56px 40px;text-align:center;box-shadow:var(--shadow-card);
}
.cta-block h2{margin-bottom:14px;}
.cta-block p{max-width:640px;margin:0 auto 26px;color:var(--text);}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:#101A24;color:#A9B6C3;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px;}
.footer-desc{font-size:14px;color:#8B9AA9;max-width:340px;line-height:1.8;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#A9B6C3;font-size:14px;}
.footer-col a:hover{color:#61AEEF;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;justify-content:space-between;
  gap:12px;flex-wrap:wrap;font-size:13px;color:#7C8B9A;
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .term-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1023px){
  :root{--section-y:64px;}
  .grid-8-4{grid-template-columns:minmax(0,1fr);}
  .toc{position:static;order:-1;}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .toc-list a{border-left:none;background:#F4F7FB;}
  .scene-layout{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:860px){
  .search{display:none;}
}
@media (max-width:767px){
  :root{--section-y:48px;}
  .container{padding:0 16px;}
  .topbar{gap:12px;}
  .brand-text{font-size:16px;}
  .section-head{margin-bottom:28px;}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;padding:22px 0;}
  .term-grid{grid-template-columns:minmax(0,1fr);}
  .step-item{padding-left:56px;}
  .step-node{width:38px;height:38px;font-size:15px;}
  .step-item::before{left:18px;top:42px;}
  .step-card{padding:18px;}
  .faq-q{font-size:15px;padding:16px 18px;}
  .faq-a p{padding:0 18px 18px;}
  .cta-block{padding:36px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .page-hero .container{padding-top:34px;padding-bottom:34px;}
}
@media (max-width:480px){
  body{font-size:15px;}
  .stat-num{font-size:23px;}
  .cta-actions .btn{width:100%;}
  .topbar-actions .btn-sm{padding:0 14px;font-size:13px;}
}

/* roulang page: category2 */
:root{
  --primary:#1E7BD6;
  --primary-dark:#145EA8;
  --primary-light:#E8F2FD;
  --accent:#FF8A3D;
  --accent-dark:#E86F1F;
  --accent-light:#FFF1E6;
  --ink:#16202B;
  --text:#4A5A6A;
  --muted:#8593A2;
  --border:#E3E9F0;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --ok:#22A06B;
  --warn:#E5A100;
  --err:#D9453C;
  --radius-card:14px;
  --radius-sm:10px;
  --radius-lg:20px;
  --shadow-1:0 2px 8px rgba(22,32,43,.06);
  --shadow-2:0 10px 24px rgba(30,123,214,.14);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --mono:"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::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:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3}
p{margin:0}
button{font:inherit;color:inherit}
input{font:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
section[id]{scroll-margin-top:96px}

/* ---------- header ---------- */
.site-header{background:rgba(255,255,255,.96);position:relative;z-index:70}
.topbar{display:flex;align-items:center;gap:20px;min-height:64px;padding:8px 0}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700;letter-spacing:1px;
  flex:0 0 auto;
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);white-space:nowrap}
.search{
  flex:1 1 auto;max-width:420px;margin-left:auto;
  display:flex;align-items:center;gap:8px;
  height:42px;padding:0 14px;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:#fff;transition:border-color .2s ease,box-shadow .2s ease;
}
.search svg{width:18px;height:18px;fill:var(--muted);flex:0 0 auto}
.search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--ink)}
.search input::placeholder{color:var(--muted)}
.search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,123,214,.14)}
.topbar-actions{flex:0 0 auto}
.channel-bar{
  position:sticky;top:0;z-index:65;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  box-shadow:0 2px 10px rgba(22,32,43,.04);
}
.channel-scroll{
  display:flex;gap:10px;align-items:center;min-height:52px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.pill{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:999px;font-size:14px;font-weight:600;white-space:nowrap;
  background:#EEF2F7;color:#4A5A6A;transition:all .2s ease;
}
.pill:hover{background:var(--primary-light);color:var(--primary)}
.pill.active{background:var(--primary);color:#fff;box-shadow:0 6px 14px rgba(30,123,214,.22)}
.pill.active:hover{background:var(--primary);color:#fff}

/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all .2s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(30,123,214,.22)}
.btn-primary:hover{background:#2b87dd;transform:translateY(-1px);box-shadow:0 10px 22px rgba(30,123,214,.26)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--border);color:var(--primary-dark)}
.btn-ghost:hover{background:var(--primary-light);border-color:#bcd9f5}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,138,61,.24)}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px}
.link-more{color:var(--primary);font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:4px}
.link-more:hover{color:var(--primary-dark)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:6px;font-size:13px;font-weight:600;line-height:1.5;
}
.badge-tag{background:var(--primary-light);color:var(--primary-dark)}
.badge-reward{background:var(--accent-light);color:var(--accent-dark)}
.badge-ok{background:#E7F6EF;color:var(--ok)}
.badge-warn{background:#FDF3DA;color:#96690A}
.badge-idle{background:#EEF2F7;color:#6B7887}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:48px 0 72px;
  background-image:radial-gradient(760px 420px at 88% 12%,rgba(30,123,214,.10),rgba(30,123,214,0) 70%),
    url("/assets/images/backpic/back-2.png");
  background-size:cover,cover;
  background-position:center,center;
  background-repeat:no-repeat,no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(245,248,252,.97) 0%,rgba(245,248,252,.9) 46%,rgba(245,248,252,.55) 100%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:24px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#C4CFDA}
.breadcrumb .current{color:var(--text)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:5px 14px;font-size:13px;font-weight:600;color:var(--primary-dark);margin-bottom:18px;
}
.hero-eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--accent)}
.hero-grid h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:700}
.hero-lead{margin-top:18px;font-size:17px;line-height:1.8;color:var(--text);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text)}
.hero-points svg{width:18px;height:18px;fill:var(--primary)}
.hero-media{
  border-radius:18px;overflow:hidden;background:var(--primary-light);
  box-shadow:0 18px 40px rgba(22,32,43,.14);position:relative;
}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(30,123,214,.05),rgba(30,123,214,0));
  pointer-events:none;
}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:34px;padding-top:26px;border-top:1px solid var(--border)}
.hero-stats .num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--ink);line-height:1.2}
.hero-stats .lbl{font-size:13px;color:var(--muted);margin-top:4px}

/* ---------- filter bar ---------- */
.filter-bar{
  display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;
  padding:8px;border:1px solid var(--border);border-radius:999px;
  background:#fff;box-shadow:var(--shadow-1);margin-bottom:44px;
}
.filter-bar::-webkit-scrollbar{display:none}
.filter-pill{
  display:inline-flex;align-items:center;height:38px;padding:0 20px;border-radius:999px;
  font-size:14px;font-weight:600;white-space:nowrap;color:#4A5A6A;background:transparent;
  border:0;cursor:pointer;transition:all .2s ease;
}
.filter-pill:hover{background:var(--primary-light);color:var(--primary)}
.filter-pill.active{background:var(--primary);color:#fff;box-shadow:0 6px 14px rgba(30,123,214,.22)}

/* ---------- section head ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.6vw,30px)}
.section-sub{margin-top:10px;font-size:15px;color:var(--muted);max-width:720px}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:22px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D5E6F8}
.bento-main{grid-column:span 2;grid-row:span 2;display:flex;flex-direction:column;gap:18px}
.bento-main h3{font-size:22px}
.reward-figure{
  aspect-ratio:4/3;border-radius:var(--radius-sm);overflow:hidden;background:var(--primary-light);
  border:1px solid var(--border);
}
.reward-figure img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .reward-figure img{transform:scale(1.04)}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.card h3{font-size:18px}
.card .desc{margin-top:8px;font-size:14px;color:var(--text)}
.point-list{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.point-list li{position:relative;padding-left:16px;font-size:14px;color:var(--text)}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--primary);
}
.bento-main .point-list li{font-size:15px}
.bento-main .reward-figure{aspect-ratio:16/9}

/* ---------- tiers ---------- */
.tier-list{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tier-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease;
  position:relative;overflow:hidden;
}
.tier-card::before{content:"";position:absolute;left:0;top:0;height:4px;width:100%;background:var(--primary-light)}
.tier-card:nth-child(2)::before{background:#BFDCF7}
.tier-card:nth-child(3)::before{background:#8CC0F2}
.tier-card:nth-child(4)::before{background:linear-gradient(90deg,var(--primary),var(--accent))}
.tier-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.tier-name{font-size:17px;font-weight:700;color:var(--ink)}
.tier-amount{margin-top:12px;font-family:var(--mono);font-size:28px;font-weight:700;color:var(--primary-dark);line-height:1.2}
.tier-amount span{font-family:var(--font);font-size:13px;color:var(--muted);font-weight:500;margin-left:6px}
.tier-card ul{margin-top:16px;display:flex;flex-direction:column;gap:8px;border-top:1px dashed var(--border);padding-top:16px}
.tier-card ul li{font-size:14px;color:var(--text);position:relative;padding-left:16px}
.tier-card ul li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:#B7C6D6}
.tier-card .badge{margin-top:16px}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:26px 22px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.step:not(:last-child)::after{
  content:"";position:absolute;right:-12px;top:50%;width:24px;height:0;
  border-top:1px dashed #BFDCF7;transform:translateY(-50%);
}
.step-num{
  width:38px;height:38px;border-radius:50%;background:var(--primary);color:#fff;
  display:grid;place-items:center;font-family:var(--mono);font-size:16px;font-weight:700;margin-bottom:16px;
  box-shadow:0 6px 14px rgba(30,123,214,.25);
}
.step h3{font-size:17px}
.step p{margin-top:10px;font-size:14px;color:var(--text)}
.step .tagline{margin-top:14px;font-size:13px;color:var(--primary-dark);background:var(--primary-light);border-radius:6px;padding:4px 10px;display:inline-block}

/* ---------- scenes ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--primary-light)}
.scene-body{padding:22px}
.scene-body h3{font-size:17px}
.scene-body p{margin-top:10px;font-size:14px;color:var(--text)}

/* ---------- confirm block ---------- */
.confirm-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.confirm-panel{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1)}
.confirm-panel h3{font-size:18px;margin-bottom:14px}
.confirm-panel p{font-size:15px;color:var(--text)}
.state-list{display:flex;flex-direction:column;gap:14px;margin-top:6px}
.state-item{display:flex;align-items:flex-start;gap:14px;padding:16px;border:1px solid var(--border);border-radius:var(--radius-sm);background:#FBFDFF;transition:background .2s ease}
.state-item:hover{background:var(--primary-light)}
.state-item strong{display:block;color:var(--ink);font-size:15px}
.state-item span{font-size:13.5px;color:var(--text)}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);margin-bottom:14px;overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease}
.faq-item:hover{border-color:#D5E6F8}
.faq-item.open{box-shadow:inset 3px 0 0 var(--primary),var(--shadow-1);border-color:#D5E6F8}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 24px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-q .arrow{
  width:22px;height:22px;flex:0 0 auto;border-radius:50%;background:var(--primary-light);
  display:grid;place-items:center;transition:transform .25s ease,background .2s ease;
}
.faq-q .arrow svg{width:12px;height:12px;fill:var(--primary-dark)}
.faq-item.open .faq-q .arrow{transform:rotate(180deg);background:var(--primary)}
.faq-item.open .faq-q .arrow svg{fill:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 24px;font-size:15px;color:var(--text)}
.faq-item.open .faq-a{max-height:420px;padding-bottom:20px}

/* ---------- cta ---------- */
.cta-block{
  background:rgba(30,123,214,.06);
  border:1px solid #D8E8F8;
  border-radius:var(--radius-lg);
  padding:56px 32px;text-align:center;
}
.cta-block h2{font-size:clamp(22px,2.6vw,30px)}
.cta-block p{margin-top:14px;font-size:16px;color:var(--text);max-width:640px;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ---------- footer ---------- */
.site-footer{background:#16202B;color:#B9C6D3;padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:700;margin-bottom:16px}
.footer-desc{font-size:14px;line-height:1.8;color:#93A3B4;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:#B9C6D3}
.footer-col a:hover{color:#6FB6F0}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:#8593A2;
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento-main{grid-column:span 2;grid-row:auto}
  .tier-list{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:not(:last-child)::after{display:none}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media img{aspect-ratio:16/9}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .confirm-grid{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .page-hero{padding:32px 0 52px}
  .topbar{flex-wrap:wrap;gap:12px;padding:10px 0}
  .search{order:3;flex:1 1 100%;max-width:none;margin-left:0}
  .topbar-actions{margin-left:auto}
  .bento{grid-template-columns:1fr}
  .bento-main{grid-column:span 1}
  .tier-list{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .hero-stats{gap:24px}
  .cta-block{padding:40px 20px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a{padding:0 18px}
}
@media (max-width:480px){
  .container{padding:0 14px}
  .brand-text{font-size:16px}
  .hero-grid h1{font-size:26px}
  .hero-lead{font-size:15.5px}
  .btn{width:100%;padding:0 18px}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .card{padding:18px}
}

/* roulang page: category3 */
:root{
  --brand:#1E7BD6;
  --brand-dark:#145EA8;
  --brand-soft:#E8F2FD;
  --accent:#FF8A3D;
  --accent-dark:#E86F1F;
  --accent-soft:#FFF1E6;
  --ink:#16202B;
  --text:#4A5A6A;
  --muted:#8593A2;
  --line:#E3E9F0;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --success:#22A06B;
  --success-soft:#E7F6EF;
  --warn:#E5A100;
  --warn-soft:#FDF4E0;
  --error:#D9453C;
  --error-soft:#FCECEA;
  --r-card:14px;
  --r-sm:10px;
  --r-pill:999px;
  --r-badge:6px;
  --sh-1:0 2px 8px rgba(22,32,43,.06);
  --sh-2:0 10px 24px rgba(30,123,214,.14);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","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:1.75;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.35;}
h1{font-size:clamp(28px,4.2vw,44px);font-weight:700;line-height:1.25;}
h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;}
h3{font-size:20px;font-weight:600;line-height:1.4;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{
  position:relative;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.topbar{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:64px;
  padding:10px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
  font-weight:700;
}
.brand:hover{color:var(--brand-dark);}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand) 0%,#3D96E8 100%);
  color:#fff;
  font-size:14px;
  font-weight:700;
  letter-spacing:1px;
}
.brand-text{font-size:18px;letter-spacing:.3px;white-space:nowrap;}
.search{
  flex:1 1 auto;
  max-width:420px;
  display:flex;
  align-items:center;
  gap:8px;
  height:44px;
  padding:0 14px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search svg{width:18px;height:18px;fill:var(--muted);flex:0 0 auto;}
.search input{
  flex:1 1 auto;
  min-width:0;
  border:0;
  background:transparent;
  font-size:15px;
  color:var(--ink);
  outline:none;
}
.search input::placeholder{color:var(--muted);}
.search:focus-within{
  border-color:var(--brand);
  background:#fff;
  box-shadow:0 0 0 3px rgba(30,123,214,.14);
}
.topbar-actions{flex:0 0 auto;margin-left:auto;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 12px rgba(30,123,214,.22);}
.btn-primary:hover{background:#2A88E0;color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(30,123,214,.26);}
.btn-primary:active{transform:translateY(0);background:var(--brand-dark);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C9DFF6;}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:#A9CFF2;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}

/* ---------- channel bar ---------- */
.channel-bar{
  position:sticky;
  top:0;
  z-index:30;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(6px);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 10px rgba(22,32,43,.04);
}
.channel-scroll{
  display:flex;
  align-items:center;
  gap:10px;
  height:52px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none;}
.pill{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:var(--r-pill);
  background:#F0F4F9;
  color:#3C4B5A;
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.pill:hover{background:var(--brand-soft);color:var(--brand-dark);}
.pill.active{background:var(--brand);color:#fff;box-shadow:0 4px 10px rgba(30,123,214,.24);}
.pill.active:hover{background:var(--brand-dark);color:#fff;}

/* ---------- layout ---------- */
main{display:block;}
.section{padding:76px 0;}
.section-tight{padding:56px 0;}
.section-head{margin-bottom:32px;max-width:760px;}
.section-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-soft);
  padding:4px 12px;
  border-radius:var(--r-badge);
  margin-bottom:14px;
}
.section-head p{margin:12px 0 0;color:var(--text);font-size:16px;}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--muted);
  padding:20px 0 0;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C3CDD8;}
.breadcrumb .current{color:var(--text);font-weight:600;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(900px 420px at 12% -10%,rgba(30,123,214,.10) 0%,rgba(30,123,214,0) 62%),
    radial-gradient(700px 340px at 92% 8%,rgba(255,138,61,.10) 0%,rgba(255,138,61,0) 60%),
    #fff;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-120px;
  top:-120px;
  width:420px;
  height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(30,123,214,.08) 0%,rgba(30,123,214,0) 70%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:40px;
  align-items:center;
  padding:44px 0 64px;
}
.hero-copy .tagline{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:var(--accent-soft);
  color:var(--accent-dark);
  font-size:13px;
  font-weight:700;
  margin-bottom:18px;
}
.hero-copy h1{margin-bottom:16px;}
.hero-copy h1 .hl{color:var(--brand);}
.hero-copy .lede{
  font-size:17px;
  color:var(--text);
  max-width:560px;
  margin-bottom:24px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  padding-top:20px;
  border-top:1px dashed var(--line);
}
.hero-facts li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);}
.hero-facts b{color:var(--ink);font-size:16px;}
.dot{width:8px;height:8px;border-radius:50%;background:var(--brand);flex:0 0 auto;}
.dot.accent{background:var(--accent);}
.dot.success{background:var(--success);}
.hero-visual{
  position:relative;
  border-radius:18px;
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:#E8F2FD;
  aspect-ratio:16/11;
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual .veil{
  position:absolute;
  inset:auto 0 0 0;
  padding:18px 20px;
  background:linear-gradient(to top,rgba(22,32,43,.78) 0%,rgba(22,32,43,0) 100%);
  color:#fff;
  font-size:14px;
  line-height:1.6;
}
.hero-visual .veil span{display:block;font-size:13px;color:rgba(255,255,255,.82);}

/* ---------- progress board ---------- */
.progress-layout{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:28px;
  align-items:start;
}
.panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px;
}
.panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:22px;}
.panel-head h3{margin-bottom:6px;}
.panel-head p{margin:0;font-size:14px;color:var(--muted);}
.overall{
  flex:0 0 auto;
  text-align:right;
}
.overall b{
  display:block;
  font-size:30px;
  line-height:1;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.5px;
}
.overall span{font-size:13px;color:var(--muted);}

.progress-item{padding:14px 0;border-bottom:1px dashed var(--line);}
.progress-item:last-child{border-bottom:0;padding-bottom:0;}
.progress-item:first-of-type{padding-top:0;}
.pi-top{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:10px;}
.pi-name{font-size:15px;font-weight:600;color:var(--ink);}
.pi-num{font-size:14px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;}
.bar{
  position:relative;
  height:10px;
  border-radius:var(--r-pill);
  background:#EDF2F8;
  overflow:hidden;
}
.bar i{
  display:block;
  height:100%;
  width:0;
  border-radius:var(--r-pill);
  background:linear-gradient(90deg,var(--brand) 0%,var(--accent) 100%);
  transition:width .9s cubic-bezier(.22,.61,.36,1);
}
.pi-note{font-size:13px;color:var(--muted);margin-top:8px;}

.status-list{display:grid;gap:12px;}
.status-card{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:16px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:#FBFDFF;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.status-card:hover{border-color:#C9DFF6;box-shadow:var(--sh-1);transform:translateY(-2px);}
.status-card .sc-body{flex:1 1 auto;min-width:0;}
.status-card h4{font-size:15px;font-weight:600;margin-bottom:4px;}
.status-card p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.65;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-badge);
  font-size:12.5px;
  font-weight:600;
  white-space:nowrap;
}
.badge-brand{background:var(--brand-soft);color:var(--brand-dark);}
.badge-accent{background:var(--accent-soft);color:var(--accent-dark);}
.badge-done{background:var(--success-soft);color:#1B7F55;}
.badge-doing{background:var(--brand-soft);color:var(--brand-dark);}
.badge-idle{background:#EEF2F7;color:#5D6B7A;}

/* ---------- table ---------- */
.table-wrap{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.table-scroll{overflow-x:auto;}
table.compare{
  width:100%;
  border-collapse:collapse;
  min-width:640px;
  font-size:15px;
}
table.compare thead th{
  text-align:left;
  background:#F3F7FC;
  color:var(--ink);
  font-size:14px;
  font-weight:700;
  padding:16px 22px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.compare tbody td{
  padding:18px 22px;
  border-bottom:1px solid var(--line);
  vertical-align:middle;
}
table.compare tbody tr:nth-child(even){background:#FAFCFE;}
table.compare tbody tr{transition:background .18s ease;}
table.compare tbody tr:hover{background:var(--brand-soft);}
table.compare tbody tr:last-child td{border-bottom:0;}
.td-task strong{display:block;color:var(--ink);font-weight:600;font-size:15px;margin-bottom:4px;}
.td-task span{display:block;font-size:13.5px;color:var(--muted);line-height:1.65;}
.td-state{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.mini-bar{
  width:130px;
  height:8px;
  border-radius:var(--r-pill);
  background:#EDF2F8;
  overflow:hidden;
  flex:0 0 auto;
}
.mini-bar i{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--brand),var(--accent));}
.td-state em{font-style:normal;font-size:13.5px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;min-width:44px;}
.table-foot{
  display:flex;
  flex-wrap:wrap;
  gap:12px 20px;
  align-items:center;
  justify-content:space-between;
  padding:16px 22px;
  background:#F9FBFE;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--muted);
}
.legend{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* ---------- stages ---------- */
.stage-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.stage-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.stage-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFE3F7;}
.stage-card .thumb{aspect-ratio:4/3;background:#E8F2FD;overflow:hidden;}
.stage-card .thumb img{width:100%;height:100%;object-fit:cover;}
.stage-card .body{padding:22px;}
.stage-card h3{margin-bottom:10px;display:flex;align-items:center;gap:10px;}
.stage-card .no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:28px;height:28px;
  border-radius:var(--r-pill);
  background:var(--brand);
  color:#fff;
  font-size:14px;
  font-weight:700;
  flex:0 0 auto;
}
.stage-card p{font-size:15px;margin-bottom:14px;}
.check-list{display:grid;gap:8px;}
.check-list li{
  position:relative;
  padding-left:22px;
  font-size:14.5px;
  color:var(--text);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:10px;height:10px;
  border-radius:3px;
  background:var(--brand-soft);
  border:2px solid var(--brand);
}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:32px;align-items:start;}
.faq-aside{
  position:sticky;
  top:84px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:24px;
}
.faq-aside h3{font-size:18px;margin-bottom:14px;}
.anchor-list{display:grid;gap:6px;}
.anchor-list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:var(--r-sm);
  font-size:14.5px;
  color:var(--text);
  transition:background .18s ease,color .18s ease;
}
.anchor-list a::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:#C9D6E3;
  flex:0 0 auto;
  transition:background .18s ease;
}
.anchor-list a:hover{background:var(--brand-soft);color:var(--brand-dark);}
.anchor-list a:hover::before{background:var(--brand);}
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-left:3px solid transparent;
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-left-color:var(--brand);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
}
.faq-q:hover{color:var(--brand-dark);}
.faq-q .caret{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  background:var(--brand-soft);
  position:relative;
  transition:transform .25s ease,background .25s ease;
}
.faq-q .caret::before,
.faq-q .caret::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--brand);
  transform:translate(-50%,-50%);
  border-radius:2px;
}
.faq-q .caret::before{width:12px;height:2px;}
.faq-q .caret::after{width:2px;height:12px;transition:opacity .25s ease;}
.faq-item.open .caret{transform:rotate(180deg);background:var(--brand);}
.faq-item.open .caret::before{background:#fff;}
.faq-item.open .caret::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a .inner{
  padding:0 24px 22px;
  font-size:15px;
  color:var(--text);
  line-height:1.8;
}
.faq-a .inner p:last-child{margin-bottom:0;}

/* ---------- cta ---------- */
.cta-block{
  background:
    radial-gradient(600px 300px at 20% 0%,rgba(30,123,214,.10) 0%,rgba(30,123,214,0) 60%),
    var(--brand-soft);
  border:1px solid #D5E6F9;
  border-radius:20px;
  padding:48px 32px;
  text-align:center;
}
.cta-block h2{margin-bottom:12px;}
.cta-block p{max-width:620px;margin:0 auto 26px;color:var(--text);font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:0;
  background:#F0F4F9;
  border-top:1px solid var(--line);
  padding:56px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:4fr 2.6fr 2.6fr 2.8fr;
  gap:32px;
  padding-bottom:32px;
  border-bottom:1px solid var(--line);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:14px;
}
.footer-desc{font-size:14px;color:var(--muted);line-height:1.8;margin:0;max-width:340px;}
.footer-col h4{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--text);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
  justify-content:space-between;
  padding-top:22px;
  font-size:13.5px;
  color:var(--muted);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .stage-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:28px;padding-bottom:48px;}
  .hero-visual{aspect-ratio:16/9;}
  .progress-layout{grid-template-columns:1fr;}
  .faq-layout{grid-template-columns:1fr;}
  .faq-aside{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .section{padding:60px 0;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .topbar{flex-wrap:wrap;gap:12px;padding:12px 0;}
  .brand-text{font-size:16px;}
  .search{order:3;max-width:100%;flex-basis:100%;}
  .topbar-actions{order:2;}
  .channel-scroll{height:48px;}
  .section{padding:48px 0;}
  .section-tight{padding:40px 0;}
  .panel{padding:20px;}
  .stage-grid{grid-template-columns:1fr;}
  .cta-block{padding:36px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  table.compare thead th,table.compare tbody td{padding:14px 16px;}
}
@media (max-width:480px){
  h1{font-size:26px;}
  .hero-copy .lede{font-size:15.5px;}
  .brand-mark{width:34px;height:34px;font-size:13px;}
  .btn{height:44px;padding:0 18px;font-size:14px;}
  .panel-head{flex-direction:column;}
  .overall{text-align:left;}
  .mini-bar{width:88px;}
}

/* roulang page: category4 */
:root{
  --brand:#1E7BD6;
  --brand-dark:#145EA8;
  --brand-light:#E8F2FD;
  --accent:#FF8A3D;
  --accent-dark:#E86F1F;
  --accent-light:#FFF1E6;
  --ink:#16202B;
  --text:#4A5A6A;
  --muted:#8593A2;
  --line:#E3E9F0;
  --page:#F5F8FC;
  --card:#FFFFFF;
  --ok:#22A06B;
  --warn:#E5A100;
  --err:#D9453C;
  --r-card:14px;
  --r-sm:10px;
  --r-badge:6px;
  --shadow:0 2px 8px rgba(22,32,43,.06);
  --shadow-hover:0 10px 24px rgba(30,123,214,.14);
  --container:1200px;
}
*,*::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","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-dark)}
button{font:inherit;color:inherit}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.3;font-weight:700}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25}
h2{font-size:clamp(22px,2.6vw,30px)}
h3{font-size:20px;font-weight:600;line-height:1.4}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;box-shadow:0 1px 0 rgba(22,32,43,.06)}
.topbar{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;flex:0 0 auto}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),#4FA3EA);color:#fff;font-size:14px;font-weight:700;letter-spacing:.5px;
  box-shadow:0 4px 12px rgba(30,123,214,.28);
}
.brand-text{font-size:17px;letter-spacing:.2px}
.search{
  flex:1 1 auto;max-width:460px;display:flex;align-items:center;gap:8px;height:44px;
  padding:0 14px;background:#F2F6FB;border:1px solid var(--line);border-radius:var(--r-sm);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search svg{width:18px;height:18px;fill:var(--muted);flex:0 0 auto}
.search input{flex:1;border:0;background:transparent;outline:none;font-size:15px;color:var(--ink)}
.search input::placeholder{color:#9AA7B5}
.search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(30,123,214,.14)}
.topbar-actions{flex:0 0 auto;display:flex;align-items:center;gap:12px}
.channel-bar{background:#fff;border-top:1px solid var(--line);box-shadow:0 2px 6px rgba(22,32,43,.04)}
.channel-scroll{
  display:flex;gap:10px;align-items:center;height:52px;overflow-x:auto;
  scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.pill{
  flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  background:#F2F6FB;color:#4A5A6A;font-size:14.5px;font-weight:500;white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease;
}
.pill:hover{background:var(--brand-light);color:var(--brand-dark)}
.pill.active{background:var(--brand);color:#fff;box-shadow:0 4px 12px rgba(30,123,214,.26)}
.pill.active:hover{background:var(--brand-dark);color:#fff}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 14px rgba(30,123,214,.24)}
.btn-primary:hover{background:#2A88E0;color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(30,123,214,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 14px rgba(255,138,61,.28)}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-light);border-color:#CFE2F8;color:var(--brand-dark)}
.link-more{font-weight:600;font-size:15px;text-decoration:underline;text-underline-offset:4px}

/* ---------- breadcrumb ---------- */
.crumb{background:#fff;border-bottom:1px solid var(--line)}
.crumb-inner{display:flex;align-items:center;gap:8px;height:52px;font-size:14px;color:var(--muted);overflow:hidden}
.crumb-inner a{color:var(--muted)}
.crumb-inner a:hover{color:var(--brand)}
.crumb-inner .sep{color:#C6D0DA}
.crumb-inner .now{color:var(--ink);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 12% -10%,rgba(30,123,214,.10),transparent 60%),
    radial-gradient(700px 380px at 92% 0%,rgba(255,138,61,.10),transparent 62%),
    #fff;
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:40px;align-items:center;padding:64px 0 68px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;border-radius:999px;
  background:var(--brand-light);color:var(--brand-dark);font-size:13px;font-weight:600;margin-bottom:18px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}
.hero h1{margin-bottom:14px}
.hero-sub{font-size:16.5px;color:var(--text);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:var(--muted)}
.hero-points span{display:inline-flex;align-items:center;gap:8px}
.hero-points svg{width:16px;height:16px;fill:var(--ok)}
.hero-media{
  position:relative;border-radius:18px;overflow:hidden;aspect-ratio:16/9;background:#DCE7F3;
  box-shadow:0 18px 42px rgba(22,32,43,.14);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(30,123,214,.22),rgba(255,255,255,0) 58%);
}
.hero-stats{
  position:absolute;left:18px;bottom:18px;right:18px;display:flex;gap:10px;flex-wrap:wrap;
}
.hero-stats b{
  background:rgba(255,255,255,.92);color:var(--ink);border-radius:10px;padding:7px 12px;
  font-size:13px;font-weight:600;backdrop-filter:blur(4px);
}

/* ---------- sections ---------- */
section.block{padding:72px 0}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px}
.block-head p{margin:8px 0 0;color:var(--muted);font-size:15px}
.block-title{display:flex;align-items:center;gap:12px}
.block-title::before{content:"";width:5px;height:26px;border-radius:3px;background:linear-gradient(180deg,var(--brand),var(--accent))}

/* ---------- faq layout ---------- */
.faq-layout{display:grid;grid-template-columns:280px 1fr;gap:32px;align-items:start}
.anchor-card{
  position:sticky;top:132px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow);padding:20px;
}
.anchor-card h3{font-size:16px;margin-bottom:14px}
.anchor-list li+li{margin-top:4px}
.anchor-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:var(--r-sm);color:var(--text);font-size:14.5px;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.anchor-list a span.num{
  font-size:12px;font-weight:700;color:var(--brand);background:var(--brand-light);
  border-radius:var(--r-badge);padding:2px 7px;
}
.anchor-list a:hover{background:#F2F6FB;color:var(--brand-dark)}
.anchor-list a.active{background:var(--brand-light);color:var(--brand-dark);font-weight:600}
.anchor-note{margin-top:18px;padding-top:18px;border-top:1px dashed var(--line);font-size:13.5px;color:var(--muted)}
.anchor-note .btn{width:100%;margin-top:12px}

.faq-group{scroll-margin-top:132px}
.faq-group+.faq-group{margin-top:40px}
.group-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.group-head .dot{
  width:34px;height:34px;flex:0 0 auto;border-radius:10px;display:grid;place-items:center;
  background:var(--brand-light);color:var(--brand-dark);font-weight:700;font-size:14px;
}
.group-head h2{font-size:22px}
.group-head .count{margin-left:auto;font-size:13px;color:var(--muted);background:#F2F6FB;border-radius:999px;padding:3px 10px}

.faq-list{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);overflow:hidden}
.faq-item+.faq-item{border-top:1px solid var(--line)}
.faq-item{position:relative;transition:background .2s ease}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;transition:background .2s ease;
}
.faq-item.open{background:#FBFDFF}
.faq-item.open::before{background:var(--brand)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;font-size:16.5px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-dark)}
.faq-ico{
  margin-left:auto;flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;background:#F2F6FB;transition:background .2s ease,transform .25s ease;
}
.faq-ico svg{width:14px;height:14px;fill:var(--brand-dark);transition:transform .25s ease}
.faq-item.open .faq-ico{background:var(--brand)}
.faq-item.open .faq-ico svg{fill:#fff;transform:rotate(180deg)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s ease}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a p{padding:0 22px 20px;margin:0;font-size:15.5px;color:var(--text)}
.faq-a ul{padding:0 22px 20px;margin:0}
.faq-a li{position:relative;padding-left:18px;font-size:15.5px;margin-bottom:8px}
.faq-a li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand)}
.faq-a .tip{
  margin:0 22px 20px;padding:12px 14px;border-left:3px solid var(--accent);background:var(--accent-light);
  border-radius:0 var(--r-sm) var(--r-sm) 0;font-size:14.5px;color:#8A4A16;
}

/* ---------- checklist cards ---------- */
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.check-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.check-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D5E6F9}
.check-card .thumb{aspect-ratio:4/3;background:#E4EDF7;overflow:hidden}
.check-card .thumb img{width:100%;height:100%;object-fit:cover}
.check-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 9px;border-radius:var(--r-badge);
  font-size:12.5px;font-weight:600;
}
.badge-blue{background:var(--brand-light);color:var(--brand-dark)}
.badge-orange{background:var(--accent-light);color:var(--accent-dark)}
.badge-ok{background:#E7F6EF;color:var(--ok)}
.badge-grey{background:#EEF2F6;color:#6B7A8A}
.check-body h3{margin:12px 0 8px;font-size:18px}
.check-body p{font-size:14.5px;margin-bottom:14px}
.check-body ul{margin-top:auto}
.check-body li{position:relative;padding-left:20px;font-size:14px;color:var(--text);margin-bottom:6px}
.check-body li::before{
  content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:2px;
  background:var(--brand-light);border:1px solid #BBD8F4;
}

/* ---------- voices ---------- */
.voices{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.voice-card{
  background:var(--page);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.voice-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.voice-card .quote{font-size:15.5px;color:var(--ink);margin-bottom:16px}
.voice-meta{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted)}
.voice-avatar{
  width:36px;height:36px;border-radius:50%;flex:0 0 auto;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-light),#D8E9FB);color:var(--brand-dark);font-weight:700;font-size:14px;
}

/* ---------- progress strip ---------- */
.progress-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center}
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);padding:26px;
}
.panel h3{font-size:19px;margin-bottom:6px}
.panel .panel-desc{font-size:14.5px;color:var(--muted);margin-bottom:20px}
.bar-row+.bar-row{margin-top:18px}
.bar-top{display:flex;justify-content:space-between;font-size:14.5px;color:var(--ink);font-weight:600;margin-bottom:8px}
.bar-top em{font-style:normal;color:var(--brand-dark)}
.bar{height:10px;border-radius:999px;background:#EDF2F8;overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--accent));width:0;transition:width .9s cubic-bezier(.22,.68,.36,1)}
.state-list li{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line);font-size:15px}
.state-list li:last-child{border-bottom:0}
.state-list .name{font-weight:600;color:var(--ink)}
.state-list .badge{margin-left:auto}

/* ---------- cta ---------- */
.cta-block{
  background:linear-gradient(120deg,rgba(30,123,214,.08),rgba(255,138,61,.08)),#fff;
  border:1px solid var(--line);border-radius:20px;padding:52px 32px;text-align:center;
  box-shadow:var(--shadow);
}
.cta-block h2{margin-bottom:12px}
.cta-block p{max-width:660px;margin:0 auto 26px;color:var(--text)}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}
.cta-note{margin-top:18px;font-size:13.5px;color:var(--muted)}

/* ---------- footer ---------- */
.site-footer{background:#101A24;color:#A9B7C5;margin-top:72px;padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16.5px;margin-bottom:14px}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand),#4FA3EA)}
.footer-desc{font-size:14px;color:#94A3B2;max-width:340px;margin:0}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col li+li{margin-top:8px}
.footer-col a{color:#A9B7C5;font-size:14px}
.footer-col a:hover{color:#4FA3EA}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;padding-top:22px;font-size:13.5px;color:#7C8B9A}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:30px;padding:48px 0 52px}
  .hero-media{order:-1}
  .faq-layout{grid-template-columns:1fr}
  .anchor-card{position:static}
  .anchor-list{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}
  .check-grid,.voice-grid{grid-template-columns:repeat(2,1fr)}
  .progress-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .topbar{height:auto;flex-wrap:wrap;padding:12px 0;gap:12px}
  .search{order:3;flex:1 1 100%;max-width:none}
  .topbar-actions{margin-left:auto}
  .channel-scroll{height:48px}
  section.block{padding:52px 0}
  .block-head{flex-direction:column;align-items:flex-start;gap:10px}
  .check-grid,.voice-grid{grid-template-columns:1fr}
  .anchor-list{grid-template-columns:1fr}
  .cta-block{padding:38px 20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
  .crumb-inner{font-size:13px}
}
@media (max-width:480px){
  h1{font-size:26px}
  .brand-text{font-size:15.5px}
  .btn{width:100%}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .faq-q{font-size:15.5px;padding:16px 16px}
  .faq-a p,.faq-a ul,.faq-a .tip{margin-left:0;padding-left:16px;padding-right:16px}
  .faq-a .tip{margin:0 16px 16px;padding:12px 14px}
}