/* roulang page: index */
:root{
  --brand:#2F6BFF;
  --brand-dark:#1E4FCC;
  --brand-soft:#EAF2FF;
  --violet:#7C5CFF;
  --warm:#FF7A45;
  --warm-dark:#E8663A;
  --ok:#16A34A;
  --warn:#F59E0B;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --ink:#0F172A;
  --muted:#64748B;
  --line:#E2E8F0;
  --r-sm:12px;
  --r:16px;
  --r-lg:24px;
  --shadow:0 8px 30px rgba(15,23,42,.08);
  --shadow-lg:0 16px 44px rgba(15,23,42,.14);
  --shadow-brand:0 8px 20px rgba(47,107,255,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(47,107,255,.35);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 16px}
@media(min-width:640px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(15,23,42,.02);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 26px rgba(15,23,42,.09)}
.header-main{display:flex;align-items:center;gap:16px;height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:.2px;flex-shrink:0}
.logo-mark{
  display:grid;place-items:center;width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,#2F6BFF 0%,#7C5CFF 100%);
  color:#fff;font-size:14px;font-weight:800;letter-spacing:.5px;
  box-shadow:0 6px 16px rgba(47,107,255,.28);
}
.logo-text{white-space:nowrap}
.nav-chips{display:flex;align-items:center;gap:8px}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:8px 16px;border-radius:999px;font-size:14px;font-weight:500;
  color:var(--muted);border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .16s ease;
}
.chip:hover{background:var(--brand-soft);color:var(--brand)}
.chip:active{transform:translateY(1px)}
.chip.is-active{background:var(--brand-soft);color:var(--brand);font-weight:700;border-color:rgba(47,107,255,.22)}
.header-cta{display:flex;align-items:center;gap:10px}
@media(min-width:1024px){
  .header-main{height:76px;gap:28px}
  .nav-chips{flex:1;justify-content:center;display:flex}
  .header-cta{margin-left:0}
}
@media(max-width:1023px){
  .header-main{flex-wrap:wrap;height:auto;padding:10px 0;row-gap:10px}
  .logo{order:1}
  .header-cta{order:2;margin-left:auto}
  .nav-chips{
    order:3;flex-basis:100%;display:flex;gap:8px;overflow-x:auto;
    padding-bottom:4px;scrollbar-width:none;-webkit-overflow-scrolling:touch;
  }
  .nav-chips::-webkit-scrollbar{display:none}
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:12px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-brand)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 14px 28px rgba(47,107,255,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-brand)}
.btn-secondary{background:#fff;color:var(--brand);border-color:rgba(47,107,255,.35)}
.btn-secondary:hover{background:var(--brand-soft);transform:translateY(-2px)}
.btn-secondary:active{transform:translateY(0)}
.btn-warm{background:var(--warm);color:#fff;box-shadow:0 8px 20px rgba(255,122,69,.3)}
.btn-warm:hover{background:var(--warm-dark);transform:translateY(-2px)}
.btn-text{background:transparent;color:var(--brand);padding:8px 4px;font-weight:600}
.btn-text:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:4px}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none}

/* ===== 倒计时条 ===== */
.countdown-bar{
  background:var(--brand-soft);
  border-bottom:1px solid rgba(47,107,255,.16);
  padding:10px 0;
}
.countdown-inner{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:space-between}
.cd-left{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.cd-badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  background:#fff;color:var(--brand-dark);font-size:12px;font-weight:700;
  border:1px solid rgba(47,107,255,.2);
}
.cd-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(22,163,74,.16)}
.cd-text{font-size:14px;color:#42526B}
.cd-clock{display:flex;align-items:center;gap:6px}
.cd-unit{
  display:inline-flex;align-items:baseline;gap:3px;background:#fff;border:1px solid var(--line);
  border-radius:10px;padding:3px 9px;
}
.cd-unit b{
  font-size:16px;font-weight:700;color:var(--brand-dark);
  font-variant-numeric:tabular-nums;font-feature-settings:"tnum";
}
.cd-unit i{font-style:normal;font-size:11px;color:var(--muted)}
@media(max-width:639px){
  .countdown-inner{flex-direction:column;align-items:flex-start;gap:10px}
  .countdown-inner .btn{width:100%}
}

/* ===== 通用板块 ===== */
.section{padding:64px 0}
@media(min-width:768px){.section{padding:96px 0}}
.section-tight{padding:40px 0}
@media(min-width:768px){.section-tight{padding:56px 0}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.6px;
  color:var(--brand);background:var(--brand-soft);
  border-radius:999px;padding:6px 14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.h1{font-size:clamp(2rem,4.6vw,3.35rem);font-weight:700;line-height:1.2;letter-spacing:-.2px}
.h2{font-size:clamp(1.5rem,3.2vw,2.2rem);font-weight:700;line-height:1.28}
.h3{font-size:clamp(1.125rem,2vw,1.4rem);font-weight:700;line-height:1.35}
.lead{font-size:clamp(1rem,1.6vw,1.125rem);color:var(--muted);line-height:1.85}
.section-head{display:flex;flex-direction:column;gap:14px;margin-bottom:32px}
@media(min-width:900px){
  .section-head{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:44px}
  .section-head .section-desc{max-width:520px}
}
.section-desc{font-size:15px;color:var(--muted);line-height:1.8}

/* ===== 卡片 ===== */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(47,107,255,.28)}
.card-pad{padding:22px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--brand-soft);color:var(--brand-dark);white-space:nowrap;
}
.badge-violet{background:rgba(124,92,255,.12);color:#5B3DE0}
.badge-warm{background:rgba(255,122,69,.14);color:#C9501F}
.badge-ok{background:rgba(22,163,74,.12);color:#15803D}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ===== Hero ===== */
.hero{position:relative;padding:48px 0 56px;overflow:hidden}
@media(min-width:768px){.hero{padding:64px 0 80px}}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(47,107,255,.14) 1px,transparent 1px);
  background-size:22px 22px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 70%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 70%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;gap:36px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.02fr 1fr;gap:56px}}
.hero-copy{display:flex;flex-direction:column;gap:20px}
.hero-sub{font-size:clamp(1rem,1.7vw,1.15rem);color:var(--muted);line-height:1.85;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;padding-top:6px}
.hero-meta li{display:flex;align-items:center;gap:8px;font-size:14px;color:#42526B}
.hero-meta li::before{
  content:"";width:18px;height:18px;border-radius:50%;
  background:rgba(47,107,255,.14);
  background-image:linear-gradient(135deg,rgba(47,107,255,.14),rgba(124,92,255,.18));
  border:1px solid rgba(47,107,255,.24);
  flex-shrink:0;
}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-lg);background:#fff;border:1px solid var(--line)}
.hero-img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-card{
  position:absolute;left:14px;right:14px;bottom:14px;
  background:rgba(255,255,255,.95);border:1px solid var(--line);
  border-radius:var(--r);padding:14px 16px;backdrop-filter:saturate(140%) blur(2px);
}
.hero-card-title{font-size:15px;font-weight:700;margin-top:8px}
.hero-card-sub{font-size:13px;color:var(--muted);margin-top:2px;line-height:1.7}

/* ===== 步骤条 ===== */
.steps{border-top:1px solid var(--line)}
.step{
  display:grid;grid-template-columns:56px 1fr;gap:16px;
  padding:22px 16px;border-bottom:1px solid var(--line);
  transition:background-color .22s ease;
}
@media(min-width:768px){.step{grid-template-columns:84px 1fr;gap:28px;padding:26px 20px}}
.step:hover{background:linear-gradient(90deg,rgba(234,242,255,.85),rgba(234,242,255,0))}
.step-num{
  font-size:24px;font-weight:700;color:var(--brand);line-height:1.2;
  font-variant-numeric:tabular-nums;font-feature-settings:"tnum";
}
@media(min-width:768px){.step-num{font-size:30px}}
.step-body h3{font-size:1.05rem;font-weight:700}
@media(min-width:768px){.step-body h3{font-size:1.2rem}}
.step-body p{margin-top:6px;color:var(--muted);font-size:14.5px;line-height:1.8}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}

/* ===== 图墙 ===== */
.wall{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.wall-item{
  position:relative;overflow:hidden;border-radius:var(--r);
  border:1px solid var(--line);background:#fff;
  box-shadow:var(--shadow);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.wall-item img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .5s ease}
.wall-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(47,107,255,.28)}
.wall-item:hover img{transform:scale(1.04)}
.wall-mask{
  position:absolute;inset:0;display:flex;align-items:flex-end;
  padding:14px;background:linear-gradient(180deg,rgba(47,107,255,0) 42%,rgba(15,23,42,.62) 100%);
  opacity:0;transition:opacity .26s ease;
}
.wall-item:hover .wall-mask{opacity:1}
.wall-mask span{
  display:inline-block;background:rgba(255,255,255,.94);color:var(--brand-dark);
  border-radius:999px;padding:5px 12px;font-size:12px;font-weight:600;
}
.wall-caption{font-size:13px;color:var(--muted);padding:10px 4px 2px}
@media(min-width:768px){
  .wall{grid-template-columns:repeat(4,1fr);grid-auto-rows:158px;gap:16px}
  .wall-item.tall{grid-row:span 2}
  .wall-item.tall img{aspect-ratio:auto;height:100%}
  .wall-item.wide{grid-column:span 2}
  .wall-item{aspect-ratio:auto}
  .wall-item img{aspect-ratio:auto;height:100%}
}
@media(max-width:767px){
  .wall{
    display:flex;overflow-x:auto;gap:14px;padding-bottom:10px;
    scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .wall::-webkit-scrollbar{display:none}
  .wall-item{flex:0 0 80%;scroll-snap-align:start}
  .wall-item img{aspect-ratio:4/3}
}

/* ===== 数据与反馈 ===== */
.stats{
  display:grid;grid-template-columns:repeat(2,1fr);gap:14px;
}
@media(min-width:768px){.stats{grid-template-columns:repeat(4,1fr);gap:20px}}
.stat{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:20px;box-shadow:var(--shadow);
}
.stat-num{
  font-size:clamp(1.5rem,3vw,2.1rem);font-weight:700;color:var(--brand-dark);
  font-variant-numeric:tabular-nums;font-feature-settings:"tnum";line-height:1.15;
}
.stat-label{margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.7}
.quotes{display:grid;gap:16px;margin-top:24px}
@media(min-width:768px){.quotes{grid-template-columns:1fr 1fr}}
.quote{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:var(--r);padding:20px 22px;box-shadow:var(--shadow);
}
.quote p{font-size:15px;line-height:1.85;color:#28374A}
.quote footer{margin-top:12px;font-size:13px;color:var(--muted)}

/* ===== 报名 CTA ===== */
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-lg);
}
.cta-card::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.13;
}
.cta-grid{position:relative;display:grid}
@media(min-width:1024px){.cta-grid{grid-template-columns:1.02fr 1fr}}
.cta-left{padding:30px 24px}
@media(min-width:768px){.cta-left{padding:44px 40px}}
.cta-right{
  padding:30px 24px;background:#fff;
  border-top:1px solid var(--line);
}
@media(min-width:1024px){
  .cta-right{border-top:0;border-left:1px solid var(--line);padding:44px 40px}
}
.cta-points{display:grid;gap:14px;margin-top:22px}
.cta-points li{display:grid;grid-template-columns:22px 1fr;gap:12px;font-size:15px;color:#334155;line-height:1.8}
.cta-points li::before{
  content:"";width:20px;height:20px;margin-top:4px;border-radius:6px;
  background:var(--brand-soft);
  border:1px solid rgba(47,107,255,.28);
  background-image:linear-gradient(135deg,var(--brand-soft),rgba(124,92,255,.16));
}
.form-grid{display:grid;gap:16px;margin-top:20px}
.form-row{display:grid;gap:6px}
.form-label{font-size:13.5px;font-weight:600;color:#334155}
.form-label .req{color:var(--warn)}
.field{
  display:block;width:100%;min-height:48px;padding:12px 14px;
  border-radius:12px;border:1px solid var(--line);background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;font-size:15px;
}
.field::placeholder{color:#9AA8BC}
.field:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,107,255,.18)}
textarea.field{min-height:104px;resize:vertical}
.field-error{font-size:12.5px;color:#DC2626;min-height:18px}
.check-row{display:grid;grid-template-columns:20px 1fr;gap:10px;align-items:start;font-size:13px;color:var(--muted);line-height:1.7}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand)}
.form-msg{margin-top:14px;border-radius:12px;padding:12px 14px;font-size:14px;display:none}
.form-msg.is-ok{display:block;background:rgba(22,163,74,.1);color:#15803D;border:1px solid rgba(22,163,74,.24)}
.form-msg.is-err{display:block;background:rgba(220,38,38,.08);color:#B91C1C;border:1px solid rgba(220,38,38,.2)}

/* ===== FAQ ===== */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);transition:background-color .2s ease}
.faq-item:hover{background:rgba(234,242,255,.6)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:20px 8px;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex-shrink:0;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;font-size:18px;font-weight:600;
  color:var(--brand);background:var(--brand-soft);
  transition:transform .22s ease,background-color .22s ease;
}
.faq-item[open] summary::after{content:"−";background:var(--brand);color:#fff}
.faq-body{
  padding:0 8px 22px;color:#42526B;font-size:15px;line-height:1.9;
}
.faq-body ol{display:grid;gap:8px;margin-top:6px;counter-reset:faq;padding-left:0}
.faq-body ol li{position:relative;padding-left:24px}
.faq-body ol li::before{
  counter-increment:faq;content:counter(faq);
  position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:6px;
  display:grid;place-items:center;font-size:11px;font-weight:700;
  background:var(--brand-soft);color:var(--brand-dark);
}

/* ===== 资讯列表 ===== */
.news-grid{display:grid;gap:20px}
@media(min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{display:flex;flex-direction:column;overflow:hidden}
.news-cover{position:relative;overflow:hidden;background:var(--brand-soft)}
.news-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-cover img{transform:scale(1.05)}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{font-size:1.05rem;font-weight:700;line-height:1.55}
.news-card:hover .news-title{color:var(--brand)}
.news-summary{font-size:14px;color:var(--muted);line-height:1.8;flex:1}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:6px;border-top:1px dashed var(--line)}
.news-time{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.empty-state{
  grid-column:1/-1;border:1px dashed var(--line);border-radius:var(--r);
  background:#fff;padding:44px 24px;text-align:center;color:var(--muted);font-size:15px;
}

/* ===== 页脚 ===== */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 26px;margin-top:8px}
.footer-grid{display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}}
.footer-title{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:14px;letter-spacing:.4px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:var(--muted);transition:color .2s ease}
.footer-links a:hover{color:var(--brand)}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.85;margin-top:14px;max-width:340px}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--brand)}

@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category1 */
:root{
  --brand:#2F6BFF;
  --brand-dark:#1E4FCC;
  --brand-light:#EAF2FF;
  --violet:#7C5CFF;
  --accent:#FF7A45;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --text:#0F172A;
  --muted:#64748B;
  --line:#E2E8F0;
  --success:#16A34A;
  --warning:#F59E0B;
  --radius-card:20px;
  --radius-btn:12px;
  --shadow-card:0 8px 30px rgba(15,23,42,.08);
  --shadow-hover:0 16px 40px rgba(15,23,42,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
input,textarea,select{
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  padding:12px 14px;
  width:100%;
  min-height:46px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
input:focus,textarea:focus,select:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(47,107,255,.16);
}
.num{font-variant-numeric:tabular-nums}

.container{
  width:100%;
  max-width:80rem;
  margin:0 auto;
  padding:0 16px;
}
@media (min-width:640px){ .container{padding:0 24px} }
@media (min-width:1024px){ .container{padding:0 32px} }

/* header */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 10px rgba(15,23,42,.04);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{ box-shadow:0 10px 26px rgba(15,23,42,.10) }
.header-main{
  display:flex;
  align-items:center;
  gap:16px;
  min-height:68px;
  padding:10px 0;
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,#2F6BFF 0%,#7C5CFF 100%);
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;
}
.logo-text{font-weight:700;font-size:17px;white-space:nowrap}
.nav-chips{
  display:flex;align-items:center;gap:8px;
  flex:1 1 auto;overflow-x:auto;padding:2px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:8px 14px;border-radius:999px;font-size:14.5px;
  color:#5B6B85;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{background:var(--brand-light);color:var(--brand-dark)}
.chip:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(47,107,255,.25)}
.chip:active{transform:translateY(1px)}
.chip.is-active{
  background:var(--brand-light);color:var(--brand-dark);
  font-weight:700;border-color:rgba(47,107,255,.28);
}
.header-cta{flex:0 0 auto}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);padding:12px 22px;
  font-weight:600;font-size:15px;border:1px solid transparent;
  cursor:pointer;transition:all .2s ease;text-align:center;
}
.btn-primary{
  background:var(--brand);color:#fff;
  box-shadow:0 6px 18px rgba(47,107,255,.28);
}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px)}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(47,107,255,.30)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{
  background:#fff;color:var(--brand-dark);
  border-color:rgba(47,107,255,.42);
}
.btn-secondary:hover{background:var(--brand-light);transform:translateY(-2px)}
.btn-secondary:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(47,107,255,.22)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-block{width:100%}

/* cards */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card-hover:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(47,107,255,.30);
}
.entry-card{overflow:hidden;display:flex;flex-direction:column;height:100%}
.entry-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EEF3FB}
.entry-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.entry-card:hover .thumb img{transform:scale(1.05)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-size:12.5px;font-weight:600;
  background:var(--brand-light);color:var(--brand-dark);
}
.tag-violet{background:#F1EEFF;color:#5B3CE0}
.tag-amber{background:#FFF1E9;color:#C2410C}
.tag-mint{background:#E8F8EF;color:#15803D}

/* hero */
.cat-hero{
  position:relative;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(246,248,252,.98) 0%,rgba(246,248,252,.92) 42%,rgba(234,242,255,.72) 100%);
}
.cat-hero > .container{position:relative;z-index:1}

/* filter panel */
.filter-panel{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
}
.filter-btn{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  width:100%;padding:10px 14px;border-radius:12px;
  background:#fff;border:1px solid transparent;
  font-size:14.5px;color:#5B6B85;cursor:pointer;
  transition:all .2s ease;text-align:left;
}
.filter-btn:hover{background:var(--brand-light);color:var(--brand-dark)}
.filter-btn.is-active{
  background:var(--brand-light);color:var(--brand-dark);
  font-weight:700;border-color:rgba(47,107,255,.28);
}
.filter-btn:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(47,107,255,.22)}

/* list */
.point-item{
  display:flex;gap:16px;
  padding:20px 0;border-bottom:1px dashed var(--line);
}
.point-item:last-child{border-bottom:none}
.point-no{
  flex:0 0 auto;width:36px;height:36px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand-dark);
  font-weight:700;font-size:14px;
}

/* faq */
.faq-item{
  border:1px solid var(--line);border-radius:16px;
  background:#fff;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item + .faq-item{margin-top:12px}
.faq-item:hover{border-color:rgba(47,107,255,.3)}
.faq-item[open]{box-shadow:0 8px 24px rgba(15,23,42,.07)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-weight:600;font-size:16px;
  cursor:pointer;list-style:none;
}
.faq-q::-webkit-details-marker{display:none}
.faq-item[open] .faq-q{color:var(--brand-dark)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand-dark);
  font-size:14px;font-weight:700;transition:transform .25s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-a{
  padding:0 20px 20px;background:#F8FAFF;
  border-top:1px solid var(--line);color:#475569;font-size:15.5px;
}

/* cta */
.cta-card{
  background:#fff;border:1px solid var(--line);
  border-radius:24px;box-shadow:var(--shadow-card);
  overflow:hidden;
}
.cta-aside{
  background:linear-gradient(160deg,#EAF2FF 0%,#F3EFFF 100%);
  border-right:1px solid var(--line);
}
.check-li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:#334155}
.check-li i{color:var(--brand);margin-top:5px}

/* footer */
.site-footer{
  background:#fff;border-top:1px solid var(--line);
  padding:56px 0 24px;margin-top:0;
}
.footer-grid{
  display:grid;gap:32px;
  grid-template-columns:1fr;
}
@media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr} }
.footer-title{font-size:14px;font-weight:700;color:#0F172A;margin-bottom:14px}
.footer-link{
  display:block;font-size:14.5px;color:var(--muted);
  padding:5px 0;transition:color .2s ease,transform .2s ease;
}
.footer-link:hover{color:var(--brand-dark);transform:translateX(2px)}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13.5px;color:var(--muted);
}

.section{padding:56px 0}
@media (min-width:768px){ .section{padding:80px 0} }
.section-tight{padding:40px 0}
@media (min-width:768px){ .section-tight{padding:56px 0} }

.mobile-bar{display:none}
@media (max-width:767px){
  .header-cta{display:none}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:rgba(255,255,255,.96);border-top:1px solid var(--line);
    padding:10px 16px;gap:10px;align-items:center;
    box-shadow:0 -6px 20px rgba(15,23,42,.08);
  }
  body{padding-bottom:72px}
}

/* roulang page: article */
:root{
  --brand:#2F6BFF;
  --brand-dark:#1E4FCC;
  --brand-soft:#EAF2FF;
  --violet:#7C5CFF;
  --orange:#FF7A45;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --text:#0F172A;
  --muted:#64748B;
  --line:#E2E8F0;
  --success:#16A34A;
  --warning:#F59E0B;
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 8px 30px rgba(15,23,42,.08);
  --shadow-hover:0 16px 44px rgba(15,23,42,.14);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0}
::selection{background:rgba(47,107,255,.18)}
.container{width:100%;max-width:1280px;margin:0 auto;padding-left:16px;padding-right:16px}
@media (min-width:640px){.container{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.container{padding-left:32px;padding-right:32px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(15,23,42,.08)}
.header-main{display:flex;align-items:center;gap:18px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--violet));
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;
  box-shadow:0 6px 16px rgba(47,107,255,.28);
}
.logo-text{font-weight:700;font-size:17px;white-space:nowrap}
.nav-chips{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  padding:4px 2px;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;
  border-radius:999px;font-size:14px;font-weight:500;color:var(--muted);
  white-space:nowrap;border:1px solid transparent;
  transition:background-color .2s,color .2s,border-color .2s,transform .12s;
}
.chip:hover{background:var(--brand-soft);color:var(--brand)}
.chip:active{transform:scale(.97)}
.chip.is-active{
  background:var(--brand-soft);color:var(--brand-dark);
  font-weight:700;border-color:rgba(47,107,255,.22);
}
.chip:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(47,107,255,.3)}
.header-cta{flex:0 0 auto}
@media (max-width:767px){
  .header-main{height:62px;gap:10px}
  .logo-text{font-size:15px}
  .logo-mark{width:32px;height:32px;border-radius:10px;font-size:13px}
  .header-cta .btn{display:none}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:12px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  text-align:center;white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-md{height:46px;padding:0 22px;font-size:15px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(47,107,255,.24)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 12px 28px rgba(47,107,255,.32)}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(47,107,255,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(47,107,255,.24)}
.btn-ghost{background:#fff;color:var(--brand);border-color:rgba(47,107,255,.35)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand)}
.btn-ghost:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(47,107,255,.25)}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14px;border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.text-link:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}

/* ---------- Breadcrumb ---------- */
.breadcrumb{background:#fff;border-bottom:1px solid var(--line)}
.breadcrumb ol{display:flex;align-items:center;gap:8px;list-style:none;padding:12px 0;margin:0;font-size:13px;color:var(--muted);overflow:hidden}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0}
.breadcrumb a{color:var(--muted);transition:color .2s}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#CBD5E1}
.breadcrumb .current{color:var(--text);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:52vw}

/* ---------- Badges ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.02em}
.badge-brand{background:var(--brand-soft);color:var(--brand-dark)}
.badge-violet{background:rgba(124,92,255,.12);color:#5B3BE0}
.badge-orange{background:rgba(255,122,69,.14);color:#D9541F}
.badge-line{background:#fff;color:var(--muted);border:1px solid var(--line)}

/* ---------- Article hero ---------- */
.article-hero{padding:40px 0 8px}
.article-hero-inner{max-width:900px}
.article-hero h1{
  font-size:clamp(1.65rem,3.6vw,2.55rem);
  line-height:1.32;font-weight:700;margin-top:16px;
}
.article-lead{
  margin-top:18px;font-size:16.5px;line-height:1.85;color:#475569;
  border-left:3px solid rgba(47,107,255,.35);padding-left:16px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;
  margin-top:22px;font-size:13.5px;color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#CBD5E1}
.article-meta strong{color:var(--text);font-weight:600}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- Cover ---------- */
.article-cover{margin-top:28px;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);background:#E8EEF9}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- Layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:34px;align-items:start;padding:36px 0 8px;
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:26px;padding-top:26px}
}
.article-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow);
  padding:28px 22px;
}
@media (min-width:768px){.article-card{padding:44px 48px}}

/* ---------- Article body typography ---------- */
.article-body{font-size:17.5px;line-height:1.9;color:#1E293B;word-break:break-word}
.article-body p{margin:1.05em 0}
.article-body h2{
  font-size:clamp(1.3rem,2.2vw,1.6rem);font-weight:700;color:var(--text);
  line-height:1.45;margin:2em 0 .85em;padding-left:14px;
  border-left:4px solid var(--brand);border-radius:2px;
}
.article-body h3{font-size:1.22rem;font-weight:700;color:var(--text);margin:1.7em 0 .6em}
.article-body h4{font-size:1.05rem;font-weight:700;color:var(--text);margin:1.4em 0 .5em}
.article-body ul,.article-body ol{margin:1.05em 0;padding-left:1.45em}
.article-body ul li{list-style:disc}
.article-body ol li{list-style:decimal}
.article-body li{margin:.45em 0;padding-left:.15em}
.article-body li::marker{color:var(--brand)}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(47,107,255,.35);transition:color .2s,border-color .2s}
.article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;background:var(--brand-soft);
  border-left:4px solid var(--brand);border-radius:0 14px 14px 0;
  color:#334155;font-size:16.5px;
}
.article-body blockquote p{margin:.35em 0}
.article-body img{border-radius:16px;margin:1.6em auto;height:auto}
.article-body figure{margin:1.7em 0}
.article-body figcaption{font-size:13.5px;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0;
  display:block;overflow-x:auto;white-space:nowrap;
  border:1px solid var(--line);border-radius:12px;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--brand-soft);font-weight:600;color:var(--text)}
.article-body code{background:#F1F5F9;padding:2px 6px;border-radius:6px;font-size:.92em;color:#B4326A}
.article-body pre{background:#0F172A;color:#E2E8F0;padding:16px 18px;border-radius:14px;overflow-x:auto;font-size:14.5px;margin:1.6em 0}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.2em 0}
.article-body strong{font-weight:700;color:var(--text)}

/* ---------- Sidebar ---------- */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
@media (max-width:1023px){.article-side{position:static}}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.side-title{font-size:14px;font-weight:700;display:flex;align-items:center;gap:8px;margin-bottom:14px}
.side-title::before{content:"";width:4px;height:15px;border-radius:2px;background:var(--brand)}
.toc-link{display:block;font-size:13.5px;color:var(--muted);padding:7px 0 7px 12px;border-left:2px solid var(--line);transition:color .2s,border-color .2s,background-color .2s}
.toc-link:hover{color:var(--brand);border-left-color:var(--brand);background:#F8FAFF}
.toc-link.is-sub{padding-left:24px;font-size:13px}
.info-row{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;padding:9px 0;border-bottom:1px dashed var(--line)}
.info-row:last-child{border-bottom:none}
.info-row span:first-child{color:var(--muted)}
.info-row span:last-child{font-weight:600;text-align:right}
.mini-post{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.mini-post:last-child{border-bottom:none;padding-bottom:0}
.mini-post img{width:64px;height:48px;border-radius:10px;object-fit:cover;flex:0 0 auto}
.mini-post h4{font-size:13.5px;font-weight:600;line-height:1.5;margin-bottom:4px;transition:color .2s}
.mini-post:hover h4{color:var(--brand)}
.mini-post time{font-size:12px;color:var(--muted)}

/* ---------- Empty state ---------- */
.empty-state{
  text-align:center;padding:56px 20px;border:1px dashed var(--line);
  border-radius:var(--radius);background:#FBFCFE;
}
.empty-icon{
  width:56px;height:56px;border-radius:18px;margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:24px;font-weight:700;
}
.empty-state h3{font-size:19px;font-weight:700;margin-bottom:8px}
.empty-state p{color:var(--muted);font-size:14.5px;margin-bottom:18px}

/* ---------- Section ---------- */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:80px 0}}
.section-head{max-width:720px;margin-bottom:28px}
.section-head .eyebrow{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.08em}
.section-head h2{font-size:clamp(1.4rem,2.6vw,1.95rem);font-weight:700;margin-top:8px;line-height:1.4}
.section-head p{margin-top:10px;color:var(--muted);font-size:15px}

/* ---------- Related cards ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
@media (max-width:1023px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:639px){.related-grid{grid-template-columns:1fr}}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(47,107,255,.28)}
.rel-thumb{position:relative;overflow:hidden;background:#EEF3FB}
.rel-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-tag{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);color:var(--brand-dark);font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px}
.rel-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:16px;font-weight:600;line-height:1.55}
.rel-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted)}

/* ---------- CTA / Form ---------- */
.cta-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);overflow:hidden;
  display:grid;grid-template-columns:1.05fr .95fr;
}
@media (max-width:1023px){.cta-wrap{grid-template-columns:1fr}}
.cta-left{padding:34px 26px;background:linear-gradient(150deg,#F3F7FF 0%,#FFFFFF 62%)}
@media (min-width:768px){.cta-left{padding:46px 42px}}
.cta-left h2{font-size:clamp(1.35rem,2.4vw,1.8rem);font-weight:700;line-height:1.42}
.cta-left p.lead{margin-top:12px;color:var(--muted);font-size:15px}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.cta-point{display:flex;gap:12px;align-items:flex-start}
.cta-num{
  flex:0 0 auto;width:26px;height:26px;border-radius:9px;background:var(--brand-soft);
  color:var(--brand-dark);font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.cta-point strong{display:block;font-size:15px;font-weight:600}
.cta-point span{font-size:13.5px;color:var(--muted)}
.cta-right{padding:30px 24px;border-top:1px solid var(--line);background:#fff}
@media (min-width:1024px){.cta-right{padding:46px 40px;border-top:none;border-left:1px solid var(--line)}}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px}
.form-field label em{color:var(--orange);font-style:normal;margin-left:3px}
.form-field input[type="text"],
.form-field input[type="tel"],
.form-field textarea{
  width:100%;min-height:46px;padding:11px 14px;border:1px solid var(--line);
  border-radius:12px;background:#FBFCFE;font-size:15px;
  transition:border-color .2s,box-shadow .2s,background-color .2s;
}
.form-field textarea{min-height:96px;resize:vertical}
.form-field input:focus,.form-field textarea:focus{
  outline:none;background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,107,255,.18);
}
.form-hint{font-size:12.5px;color:var(--muted);margin-top:6px}
.form-check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);margin:6px 0 18px}
.form-check input{margin-top:3px;width:16px;height:16px;accent-color:var(--brand);flex:0 0 auto}
.form-check a{color:var(--brand);font-weight:600}
.form-msg{margin-top:14px;font-size:13.5px;font-weight:600;color:var(--success);display:none}
.form-msg.is-error{color:#DC2626}
.form-msg.is-show{display:block}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
  transition:border-color .2s,box-shadow .2s;
}
.faq-item+.faq-item{margin-top:12px}
.faq-item[open]{border-color:rgba(47,107,255,.3);box-shadow:var(--shadow)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;cursor:pointer;font-size:15.5px;font-weight:600;
  list-style:none;transition:background-color .2s;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q:hover{background:var(--brand-soft)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:9px;background:var(--brand-soft);
  color:var(--brand-dark);display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;line-height:1;transition:transform .25s ease,background-color .2s;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-a{padding:0 20px 20px;background:#F8FAFD;color:#475569;font-size:14.8px;line-height:1.85;border-top:1px solid var(--line);padding-top:16px}

/* ---------- Back bar ---------- */
.back-bar{
  margin-top:34px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;box-shadow:var(--shadow);
}
.back-bar p{font-size:14px;color:var(--muted)}
.back-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:40px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:32px;
  padding:52px 0 34px;
}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 28px}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr;gap:26px}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .logo-mark{width:34px;height:34px;border-radius:10px;font-size:13px}
.footer-brand strong{font-size:16.5px}
.footer-desc{font-size:13.5px;color:var(--muted);line-height:1.8;max-width:330px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-title{font-size:14px;font-weight:700;margin-bottom:14px}
.footer-links{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13.5px;color:var(--muted);transition:color .2s}
.footer-links a:hover{color:var(--brand)}
.footer-contact{font-size:13.5px;color:var(--muted);line-height:2}
.footer-contact b{color:var(--text);font-weight:600}
.footer-bottom{
  border-top:1px solid var(--line);padding:18px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--muted);
}
.footer-bottom .sep{color:#CBD5E1}

/* roulang page: category2 */
:root{
  --brand:#2F6BFF;
  --brand-dark:#1E4FCC;
  --brand-light:#EAF2FF;
  --violet:#7C5CFF;
  --orange:#FF7A45;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --text:#0F172A;
  --muted:#64748B;
  --border:#E2E8F0;
  --success:#16A34A;
  --warning:#F59E0B;
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 8px 30px rgba(15,23,42,.08);
  --shadow-hover:0 16px 40px rgba(15,23,42,.12);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
html body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure,dl,dd,ol,ul{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
.text-brand{color:var(--brand);}
.tabular{font-variant-numeric:tabular-nums;}

div.container{
  width:100%;
  max-width:1280px;
  margin-left:auto;
  margin-right:auto;
  padding-left:1rem;
  padding-right:1rem;
}
@media(min-width:640px){div.container{padding-left:1.5rem;padding-right:1.5rem;}}
@media(min-width:1024px){div.container{padding-left:2rem;padding-right:2rem;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(15,23,42,.08);}
.header-main{display:flex;align-items:center;gap:20px;height:72px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--violet));
  color:#fff;font-weight:700;font-size:14px;letter-spacing:.5px;
  box-shadow:0 6px 16px rgba(47,107,255,.28);
}
.logo-text{font-size:18px;font-weight:700;letter-spacing:.4px;color:var(--text);}
.nav-chips{
  display:flex;align-items:center;gap:6px;margin:0 auto;
  background:#fff;border:1px solid var(--border);border-radius:999px;padding:5px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--muted);white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.chip:hover{background:var(--brand-light);color:var(--brand);}
.chip:active{transform:translateY(1px);}
.chip.is-active{background:var(--brand-light);color:var(--brand-dark);font-weight:700;}
.header-cta{flex:0 0 auto;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(47,107,255,.22);}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(47,107,255,.3);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(47,107,255,.24);}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(47,107,255,.3);}
.btn-ghost{background:#fff;color:var(--brand);border-color:rgba(47,107,255,.35);}
.btn-ghost:hover{background:var(--brand-light);transform:translateY(-2px);border-color:var(--brand);}
.btn-ghost:active{transform:translateY(0);}
.btn-full{width:100%;}
.btn[disabled]{opacity:.5;pointer-events:none;}

/* ---------- badge ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;background:var(--brand-light);color:var(--brand-dark);
}
.badge-violet{background:rgba(124,92,255,.12);color:#5B3FE0;}
.badge-orange{background:rgba(255,122,69,.14);color:#D9531E;}

/* ---------- section frame ---------- */
.section{padding:56px 0;}
@media(min-width:768px){.section{padding:88px 0;}}
.section-tight{padding:44px 0;}
@media(min-width:768px){.section-tight{padding:64px 0;}}
.section-head{max-width:780px;margin-bottom:36px;}
.section-title{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.32;font-weight:700;margin:14px 0 12px;letter-spacing:-.2px;}
.section-desc{color:var(--muted);font-size:15.5px;}

/* ---------- hero ---------- */
.hero-guide{
  position:relative;
  padding:32px 0 56px;
  border-bottom:1px solid var(--border);
  background-image:
    linear-gradient(180deg,rgba(246,248,252,.93),rgba(246,248,252,.98)),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero-guide::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,92,255,.16),rgba(124,92,255,0) 68%);
  pointer-events:none;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);flex-wrap:wrap;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span[aria-current]{color:var(--text);font-weight:600;}
.hero-title{
  font-size:clamp(1.9rem,3.6vw,3rem);
  line-height:1.22;font-weight:700;letter-spacing:-.6px;
}
.hero-sub{margin-top:20px;font-size:1.02rem;color:var(--muted);max-width:58ch;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;
  margin-top:36px;padding-top:24px;border-top:1px dashed var(--border);
}
.hero-stats dt{font-size:22px;font-weight:700;color:var(--brand-dark);font-variant-numeric:tabular-nums;line-height:1.3;}
.hero-stats dd{font-size:13px;color:var(--muted);margin-top:2px;}
.hero-figure{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--border);box-shadow:var(--shadow);
  aspect-ratio:4/3;background:#fff;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure .figure-tag{
  position:absolute;left:16px;bottom:16px;
  background:rgba(255,255,255,.94);border:1px solid var(--border);
  border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;color:var(--brand-dark);
}
@media(max-width:640px){
  .hero-stats{grid-template-columns:1fr;gap:12px;padding-top:18px;}
}

/* ---------- timeline ---------- */
.timeline{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 20px;
  scroll-snap-type:x mandatory;scrollbar-width:thin;
}
.timeline::-webkit-scrollbar{height:6px;}
.timeline::-webkit-scrollbar-thumb{background:rgba(47,107,255,.28);border-radius:999px;}
.timeline-item{
  position:relative;flex:0 0 272px;scroll-snap-align:start;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.timeline-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(47,107,255,.3);}
.timeline-item::after{
  content:"";position:absolute;top:44px;right:-20px;width:20px;height:2px;
  background:linear-gradient(90deg,rgba(47,107,255,.35),rgba(47,107,255,0));
}
.timeline-item:last-child::after{display:none;}
.timeline-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:14px;
  background:var(--brand-light);color:var(--brand-dark);
  font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
}
.timeline-item h3{font-size:17px;font-weight:700;margin:16px 0 8px;}
.timeline-item p{font-size:14.5px;color:var(--muted);line-height:1.85;}

/* ---------- gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(12,1fr);gap:18px;}
.gallery-item{
  position:relative;overflow:hidden;border-radius:20px;
  border:1px solid var(--border);box-shadow:var(--shadow);background:#fff;
}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease;}
.gallery-item:hover img{transform:scale(1.05);}
.gallery-mask{
  position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;gap:6px;
  padding:20px;opacity:0;transition:opacity .32s ease;
  background:linear-gradient(180deg,rgba(15,23,42,0) 32%,rgba(15,23,42,.8));
}
.gallery-item:hover .gallery-mask{opacity:1;}
.gallery-tag{
  align-self:flex-start;background:rgba(255,255,255,.95);color:var(--brand-dark);
  border-radius:999px;padding:4px 12px;font-size:12.5px;font-weight:600;
}
.gallery-text{color:rgba(255,255,255,.88);font-size:13px;line-height:1.7;}
.g1{grid-column:span 5;height:300px;}
.g2{grid-column:span 4;height:300px;}
.g3{grid-column:span 3;height:300px;}
.g4{grid-column:span 4;height:240px;}
.g5{grid-column:span 5;height:240px;}
.g6{grid-column:span 3;height:240px;}

/* ---------- point list ---------- */
.point-list{border-top:1px solid var(--border);}
.point-item{
  display:grid;grid-template-columns:76px 1fr;gap:20px;
  padding:26px 0;border-bottom:1px solid var(--border);
  transition:background .2s ease;
}
.point-item:hover{background:rgba(234,242,255,.5);}
.point-index{
  font-size:20px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;
  display:flex;align-items:center;justify-content:center;
  width:56px;height:56px;border-radius:16px;background:var(--brand-light);
}
.point-item h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.point-item p{font-size:14.5px;color:var(--muted);line-height:1.9;max-width:70ch;}
@media(max-width:640px){
  .point-item{grid-template-columns:1fr;gap:12px;}
  .point-index{width:48px;height:48px;border-radius:14px;font-size:18px;}
}

/* ---------- cta / form ---------- */
.cta-card{
  display:grid;grid-template-columns:1.02fr 1fr;
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--border);box-shadow:var(--shadow);background:#fff;
}
.cta-info{
  padding:44px 40px;color:#fff;
  background-image:
    linear-gradient(155deg,rgba(47,107,255,.95),rgba(124,92,255,.92)),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.cta-info h2{font-size:clamp(1.4rem,2.2vw,1.9rem);line-height:1.35;font-weight:700;}
.cta-info p{margin-top:14px;color:rgba(255,255,255,.88);font-size:15px;line-height:1.9;}
.cta-points{margin-top:24px;display:grid;gap:12px;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(255,255,255,.95);}
.cta-points li::before{
  content:"";flex:0 0 8px;width:8px;height:8px;border-radius:50%;
  background:#fff;margin-top:9px;opacity:.85;
}
.cta-form{padding:40px;}
@media(max-width:900px){
  .cta-card{grid-template-columns:1fr;}
  .cta-info{padding:32px 24px;}
  .cta-form{padding:28px 24px;}
}
.form-row{margin-bottom:16px;}
.form-label{display:block;font-size:14px;font-weight:600;margin-bottom:7px;}
.form-input,.form-textarea{
  width:100%;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:#fff;color:var(--text);font-size:15px;font-family:inherit;
  padding:0 14px;height:48px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-textarea{height:auto;min-height:100px;padding:12px 14px;line-height:1.75;resize:vertical;}
.form-input::placeholder,.form-textarea::placeholder{color:#94A3B8;}
.form-input:focus,.form-textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,107,255,.15);}
.form-check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);line-height:1.65;}
.form-check input{margin-top:4px;width:16px;height:16px;accent-color:var(--brand);}
.form-note{font-size:12.5px;color:var(--muted);margin-top:12px;}
.form-error{display:none;margin-top:12px;font-size:13px;color:#DC2626;}
.form-success{display:none;margin-top:12px;font-size:13px;color:var(--success);font-weight:600;}

/* ---------- faq ---------- */
.faq-wrap{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow);}
.faq-item + .faq-item{border-top:1px solid var(--border);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);
  list-style:none;transition:background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--brand-light);}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;transition:transform .28s ease,opacity .28s ease;}
details[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-body{
  padding:0 24px 22px;background:#F8FAFC;color:var(--muted);
  font-size:14.8px;line-height:1.9;border-top:1px solid var(--border);
  animation:faqIn .28s ease;
}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}
@media(max-width:640px){
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-body{padding:0 18px 18px;}
}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:56px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-desc{font-size:14px;color:var(--muted);line-height:1.85;max-width:34ch;}
.footer-title{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--text);}
.footer-links a{display:block;font-size:14px;color:var(--muted);padding:5px 0;transition:color .2s ease,transform .2s ease;}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:34px;padding-top:20px;border-top:1px solid var(--border);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr;gap:24px;}}

/* ---------- mobile bar ---------- */
.mobile-cta-bar{display:none;}
@media(max-width:767px){
  .mobile-cta-bar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    padding:10px 16px;background:rgba(255,255,255,.97);
    border-top:1px solid var(--border);box-shadow:0 -6px 20px rgba(15,23,42,.06);
  }
  .mobile-cta-bar span{font-size:13px;color:var(--muted);}
  body{padding-bottom:74px;}
}

/* ---------- responsive nav & gallery ---------- */
@media(max-width:900px){
  .header-main{flex-wrap:wrap;height:auto;padding:12px 0;gap:12px;}
  .nav-chips{order:3;width:100%;margin:0;}
  .header-cta{margin-left:auto;}
  .hero-guide{padding:24px 0 44px;}
}

@media(max-width:900px){
  .gallery{display:flex;gap:16px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x mandatory;}
  .gallery-item{flex:0 0 78%;height:230px;scroll-snap-align:start;}
  .gallery-mask{opacity:1;background:linear-gradient(180deg,rgba(15,23,42,0) 38%,rgba(15,23,42,.72));}
}
@media(max-width:520px){
  .gallery-item{flex:0 0 86%;height:210px;}
  .hero-figure{aspect-ratio:16/10;}
  .timeline-item{flex:0 0 240px;}
}