/* roulang page: index */
:root{
  --brand:#1769E0;
  --brand-700:#0E4FB0;
  --brand-50:#E8F1FE;
  --brand-25:#F2F7FE;
  --accent:#F5A524;
  --accent-soft:#FEF3DF;
  --success:#12B76A;
  --danger:#F04438;
  --ink:#101828;
  --text:#475467;
  --muted:#98A2B3;
  --line:#E2E6EF;
  --line-strong:#D3D9E5;
  --bg:#F7F9FC;
  --paper:#FFFFFF;
  --foot:#0E1A2B;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:12px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.06);
  --shadow-card:0 8px 24px rgba(15,27,45,.06);
  --shadow-hover:0 16px 40px rgba(15,27,45,.10);
  --ease:200ms cubic-bezier(.2,.8,.2,1);
  --sec-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-700);text-decoration:underline;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(23,105,224,.35);outline-offset:2px;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.32;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:28px;line-height:1.35;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1400px){.wrap{max-width:1280px;}}
.section{padding:var(--sec-y) 0;}
@media (max-width:1199px){:root{--sec-y:80px;}}
@media (max-width:991px){:root{--sec-y:72px;}}
@media (max-width:767px){:root{--sec-y:56px;}.wrap{padding:0 16px;}h1{font-size:28px;line-height:36px;}h2{font-size:22px;line-height:30px;}}
.section-alt{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(15,27,45,.08);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:12px;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:var(--brand);color:#fff;display:grid;place-items:center;
  box-shadow:0 3px 0 var(--brand-700);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.2px;line-height:1.2;}
.brand-text span{display:inline;}
.main-nav{display:flex;align-items:center;gap:28px;}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--text);padding:6px 0;}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover{color:var(--brand);text-decoration:none;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:18px;}
.link-login{font-size:15px;font-weight:500;color:var(--text);}
.link-login:hover{color:var(--brand);text-decoration:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1.5px solid var(--line);
  background:#fff;color:var(--ink);align-items:center;justify-content:center;
}
.nav-toggle i{font-size:17px;}
@media (max-width:991px){
  .main-nav,.header-actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .brand-text{font-size:15px;}
  .brand-text span{display:block;line-height:1.25;}
}
.offcanvas{width:300px;}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.offcanvas-body{padding:0;display:flex;flex-direction:column;height:100%;}
.mnav-list{padding:8px 0;flex:1;}
.mnav-list a{
  display:flex;align-items:center;height:48px;padding:0 20px;font-size:15px;font-weight:500;
  color:var(--text);border-bottom:1px solid var(--line);
}
.mnav-list a:hover,.mnav-list a.active{color:var(--brand);background:var(--brand-25);text-decoration:none;}
.mnav-foot{padding:20px;border-top:1px solid var(--line);}
.mnav-foot .btn{width:100%;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:2px solid transparent;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
}
.btn:disabled,.btn.disabled{opacity:.4;cursor:not-allowed;}
.btn-brand{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:0 4px 0 var(--brand-700);}
.btn-brand:hover{background:var(--brand-700);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 5px 0 var(--brand-700);}
.btn-brand:active{transform:translateY(1px);box-shadow:0 2px 0 var(--brand-700);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line-strong);box-shadow:0 4px 0 var(--line);}
.btn-ghost:hover{color:var(--brand);border-color:var(--brand);text-decoration:none;transform:translateY(-1px);box-shadow:0 5px 0 var(--brand-50);}
.btn-ghost:active{transform:translateY(1px);box-shadow:0 2px 0 var(--brand-50);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}

/* ---------- hero ---------- */
.hero{position:relative;padding:72px 0 88px;background:var(--bg);overflow:hidden;}
.hero-shape{
  position:absolute;top:-90px;right:-140px;width:640px;height:460px;border-radius:56px;
  background:rgba(23,105,224,.07);transform:rotate(-12deg);pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:var(--brand-50);color:var(--brand);font-size:13px;font-weight:600;margin-bottom:20px;
}
.hero h1{max-width:560px;}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text);max-width:480px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-facts li{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text);
  background:#fff;border:1.5px solid var(--line);border-radius:999px;padding:6px 14px;
}
.hero-facts li i{color:var(--brand);font-size:12px;}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-lg);border:1.5px solid var(--line);}
.floating-card{
  position:absolute;left:-18px;bottom:-22px;background:#fff;border:1.5px solid var(--line);
  border-radius:14px;padding:14px 18px;box-shadow:var(--shadow-card);min-width:172px;
}
.floating-card .float-tag{
  display:inline-block;font-size:12px;font-weight:600;color:#8A5A00;background:var(--accent-soft);
  border-radius:999px;padding:2px 10px;margin-bottom:6px;
}
.floating-card p{font-size:15px;font-weight:600;color:var(--ink);}
.floating-card .float-note{font-size:12px;color:var(--muted);}
@media (max-width:991px){
  .hero{padding:48px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{max-width:none;}
  .floating-card{left:12px;bottom:-18px;}
}

/* ---------- section head ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.sec-title{position:relative;padding-left:18px;}
.sec-title::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--brand);
}
.sec-desc{margin-top:10px;font-size:15px;color:var(--text);max-width:640px;}
.sec-more{font-size:15px;font-weight:600;white-space:nowrap;}
.sec-more:hover{text-decoration:underline;}
@media (max-width:767px){
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px;}
}

/* ---------- compare table ---------- */
.table-shell{
  border:1.5px solid var(--line);border-radius:var(--radius-lg);background:#fff;
  box-shadow:var(--shadow-card);overflow:auto;-webkit-overflow-scrolling:touch;
}
table.compare{width:100%;min-width:720px;border-collapse:separate;border-spacing:0;}
.compare thead th{
  position:sticky;top:0;z-index:2;background:#fff;padding:18px 20px;text-align:center;
  font-size:16px;font-weight:700;color:var(--ink);border-bottom:1.5px solid var(--line);
}
.compare thead th:first-child{text-align:left;z-index:4;}
.compare thead th.col-rec{background:var(--brand-50);box-shadow:inset 0 4px 0 var(--brand);}
.compare th .th-note{display:block;font-size:13px;font-weight:400;color:var(--muted);margin-top:2px;}
.compare tbody td{
  padding:16px 20px;text-align:center;font-size:15px;line-height:1.6;color:var(--text);
  border-bottom:1px solid var(--line);background:#fff;
}
.compare tbody tr:nth-child(even) td{background:#FAFCFF;}
.compare tbody tr:last-child td{border-bottom:none;}
.compare tbody td:first-child{
  text-align:left;font-size:15px;color:var(--text);position:sticky;left:0;z-index:3;
  box-shadow:1px 0 0 var(--line);background:#fff;
}
.compare tbody tr:nth-child(even) td:first-child{background:#FAFCFF;}
.compare tbody td.col-rec{background:var(--brand-50);}
.cell-check{display:inline-grid;place-items:center;width:18px;height:18px;border-radius:50%;background:var(--success);color:#fff;}
.cell-check i{font-size:10px;}
.cell-none{display:inline-block;width:14px;height:2px;border-radius:2px;background:#D6DCE8;vertical-align:middle;}
.table-note{margin-top:14px;font-size:13px;color:var(--muted);}
@media (max-width:767px){
  .compare thead th,.compare tbody td{padding:14px 16px;}
}

/* ---------- level ladder ---------- */
.level-list{position:relative;}
.level-list::before{
  content:"";position:absolute;left:22px;top:24px;bottom:24px;width:1px;background:var(--line);z-index:0;
}
.level-row{
  position:relative;z-index:1;display:grid;grid-template-columns:210px 1fr;gap:28px;align-items:center;
  background:#fff;border:1.5px solid var(--line);border-radius:var(--radius-card);
  padding:26px 28px;margin-bottom:18px;box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.level-row:last-child{margin-bottom:0;}
.level-row:hover{transform:translateX(-2px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);}
.level-badge{
  display:flex;flex-direction:column;gap:6px;padding:16px 18px;border-radius:14px;
  background:var(--brand-25);border:1.5px solid var(--brand-50);
}
.level-badge.tier-2{background:#EAF2FF;border-color:#D5E4FF;}
.level-badge.tier-3{background:var(--accent-soft);border-color:#F7E2BB;}
.level-name{font-size:18px;font-weight:700;color:var(--ink);}
.level-tag{font-size:13px;color:var(--text);}
.level-perks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 28px;}
.level-perks li{position:relative;padding-left:20px;font-size:15px;color:var(--text);line-height:1.7;}
.level-perks li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:var(--brand);transform:rotate(45deg);
}
.level-row.tier-3 .level-perks li::before{background:var(--accent);}
@media (max-width:991px){
  .level-list::before{display:none;}
  .level-row{grid-template-columns:1fr;gap:18px;padding:22px;}
  .level-perks{grid-template-columns:1fr;}
}
@media (max-width:767px){
  .level-perks{gap:10px;}
}

/* ---------- channel strip ---------- */
.channel-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1.5px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff;box-shadow:var(--shadow-card);}
.channel-item{
  display:block;padding:26px 24px;border-right:1.5px solid var(--line);
  transition:background-color var(--ease),transform var(--ease);
}
.channel-item:last-child{border-right:none;}
.channel-item:hover{background:var(--brand-25);text-decoration:none;transform:translateY(-1px);}
.channel-num{display:block;font-size:13px;font-weight:700;color:var(--brand);letter-spacing:1px;margin-bottom:8px;}
.channel-name{display:block;font-size:18px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.channel-desc{display:block;font-size:14px;color:var(--text);line-height:1.7;}
.channel-go{display:inline-block;margin-top:14px;font-size:14px;font-weight:600;color:var(--brand);}
@media (max-width:991px){
  .channel-strip{grid-template-columns:1fr;}
  .channel-item{border-right:none;border-bottom:1.5px solid var(--line);}
  .channel-item:last-child{border-bottom:none;}
}

/* ---------- preview grid ---------- */
.preview-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px;align-items:stretch;}
.card-outline{
  background:#fff;border:1.5px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease);
}
.card-outline:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);text-decoration:none;}
.preview-main{display:block;}
.preview-main .pm-media{position:relative;overflow:hidden;}
.preview-main .pm-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.preview-main:hover .pm-media img{transform:scale(1.02);}
.pm-media img{transition:transform var(--ease);}
.pm-body{padding:24px 28px 28px;}
.tag-chip{
  display:inline-block;height:26px;line-height:24px;padding:0 12px;border-radius:999px;
  background:var(--brand-50);color:var(--brand);font-size:13px;font-weight:600;
}
.pm-body h3{margin-top:14px;font-size:20px;color:var(--ink);}
.pm-body p{margin-top:10px;font-size:15px;color:var(--text);}
.pm-meta{display:flex;align-items:center;gap:8px;margin-top:18px;font-size:13px;color:var(--muted);}
.preview-side{display:flex;flex-direction:column;gap:24px;}
.preview-side .card-outline{flex:1;display:flex;gap:16px;padding:18px;align-items:flex-start;}
.ps-thumb{flex:0 0 96px;width:96px;height:96px;border-radius:12px;overflow:hidden;background:var(--brand-50);}
.ps-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.preview-side .card-outline:hover .ps-thumb img{transform:scale(1.03);}
.ps-body h3{font-size:16px;line-height:1.5;margin-top:8px;color:var(--ink);}
.ps-body p{margin-top:6px;font-size:13px;color:var(--muted);line-height:1.6;}
@media (max-width:991px){
  .preview-grid{grid-template-columns:1fr;}
}

/* ---------- news list (CMS) ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.news-card{
  display:flex;gap:18px;padding:18px;background:#fff;border:1.5px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);text-decoration:none;}
.news-thumb{flex:0 0 120px;width:120px;height:84px;border-radius:12px;overflow:hidden;background:var(--brand-50);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{display:flex;flex-direction:column;min-width:0;flex:1;}
.news-title{font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-excerpt{margin-top:6px;font-size:14px;color:var(--text);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:8px;margin-top:auto;padding-top:12px;font-size:13px;color:var(--muted);flex-wrap:wrap;}
.news-meta .chip{
  display:inline-block;height:24px;line-height:22px;padding:0 10px;border-radius:999px;
  background:var(--brand-50);color:var(--brand);font-size:12px;font-weight:600;
}
.news-meta .read-more{margin-left:auto;font-weight:600;color:var(--muted);transition:color var(--ease);}
.news-card:hover .read-more{color:var(--brand);}
.empty-state{
  border:1.5px dashed var(--line-strong);border-radius:var(--radius-card);background:#fff;
  padding:40px 24px;text-align:center;
}
.empty-state i{font-size:28px;color:var(--muted);}
.empty-state p{margin-top:14px;font-size:15px;color:var(--text);}
.empty-state .btn{margin-top:20px;}
@media (max-width:767px){
  .news-grid{grid-template-columns:1fr;}
  .news-card{flex-direction:column;}
  .news-thumb{width:100%;height:160px;flex:none;}
}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;}
.faq-item{
  background:#fff;border:1.5px solid var(--line);border-radius:12px;overflow:hidden;
  box-shadow:var(--shadow-sm);margin-bottom:12px;
}
.faq-item:last-child{margin-bottom:0;}
.faq-item .accordion-button{
  display:flex;align-items:center;width:100%;height:56px;padding:0 24px;
  background:#fff;border:none;font-size:16px;font-weight:600;color:var(--ink);text-align:left;
  box-shadow:none !important;transition:color var(--ease);
}
.faq-item .accordion-button:not(.collapsed){color:var(--brand);}
.faq-item .accordion-button::after{display:none;}
.faq-plus{
  position:relative;width:16px;height:16px;flex:0 0 16px;margin-left:auto;
  transition:transform var(--ease);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-plus::before{left:0;right:0;top:7px;height:2px;}
.faq-plus::after{top:0;bottom:0;left:7px;width:2px;}
.accordion-button:not(.collapsed) .faq-plus{transform:rotate(45deg);}
.faq-item .accordion-body{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--text);background:#F7F9FC;}
@media (max-width:767px){
  .faq-item .accordion-button{padding:0 18px;font-size:15px;height:auto;min-height:56px;padding-top:12px;padding-bottom:12px;}
  .faq-item .accordion-body{padding:0 18px 18px;}
}

/* ---------- cta ---------- */
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:var(--brand-50);border:1.5px solid #D5E4FF;padding:48px;
  display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
}
.cta-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--brand);
}
.cta-card::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(23,105,224,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(23,105,224,.05) 1px,transparent 1px);
  background-size:28px 28px;
}
.cta-copy{position:relative;z-index:1;}
.cta-copy h2{font-size:26px;}
.cta-copy p{margin-top:10px;font-size:16px;color:var(--text);}
.cta-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.cta-badges li{
  display:inline-flex;align-items:center;gap:8px;background:#fff;border:1.5px solid #D5E4FF;
  border-radius:999px;padding:6px 14px;font-size:13px;color:var(--text);
}
.cta-badges li i{color:var(--brand);font-size:12px;}
.cta-actions{position:relative;z-index:1;display:flex;flex-direction:column;gap:12px;min-width:190px;}
@media (max-width:767px){
  .cta-card{grid-template-columns:1fr;padding:32px 24px;text-align:center;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .cta-badges{justify-content:center;}
}

/* ---------- footer ---------- */
.site-footer{background:var(--foot);color:#98A2B3;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand-text{font-size:16px;font-weight:700;color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:#98A2B3;max-width:280px;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-links li{margin-bottom:12px;}
.footer-links a{font-size:14px;color:#98A2B3;}
.footer-links a:hover{color:#fff;text-decoration:none;}
.footer-note{font-size:14px;line-height:1.9;color:#98A2B3;}
.footer-bottom{
  margin-top:56px;padding:24px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#7C8899;
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-desc{max-width:none;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding-top:56px;}
}

/* ---------- back to top ---------- */
.back-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--brand);color:#fff;border:none;display:grid;place-items:center;
  box-shadow:0 8px 24px rgba(15,27,45,.18);opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease),transform var(--ease);z-index:1040;
}
.back-top.show{opacity:1;visibility:visible;}
.back-top:hover{background:var(--brand-700);transform:translateY(-2px);}
@media (max-width:575px){.back-top{right:16px;bottom:16px;}}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.001ms !important;animation-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
        --paper:#F7F3EA;
        --paper-2:#FBF8F1;
        --card:#FFFDF9;
        --ink:#241F18;
        --ink-soft:#453E34;
        --text:#4C453B;
        --muted:#8B8276;
        --line:#DED3C0;
        --line-2:#C9BBA2;
        --primary:#B4462A;
        --primary-dark:#8E341C;
        --green:#1F5A4A;
        --green-soft:#E7EFE9;
        --amber:#D89A2B;
        --dark:#1D1913;
        --radius-s:8px;
        --radius:12px;
        --radius-l:18px;
        --shadow-s:2px 2px 0 rgba(36,31,24,.07);
        --shadow:4px 4px 0 rgba(36,31,24,.09);
        --shadow-h:6px 6px 0 rgba(36,31,24,.14);
        --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
        --serif:"Songti SC","Noto Serif SC",Georgia,"Times New Roman",serif;
        --ease:cubic-bezier(.2,.8,.2,1);
    }
    *,*::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(--paper);
        background-image:radial-gradient(rgba(36,31,24,.045) 1px,transparent 1px);
        background-size:18px 18px;
    }
    img{max-width:100%;height:auto;display:block}
    a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease)}
    a:hover{color:var(--primary-dark);text-decoration:underline}
    a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(180,70,42,.32);outline-offset:2px;border-radius:4px}
    h1,h2,h3,h4{margin:0 0 12px;color:var(--ink);line-height:1.34;font-weight:700}
    p{margin:0 0 16px}
    ul,ol{margin:0;padding:0}
    .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
    .skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;z-index:2000}
    .skip-link:focus{left:0;color:#fff}
    .eyebrow{display:inline-block;font-size:13px;letter-spacing:.12em;color:var(--primary);border:1px dashed var(--line-2);border-radius:999px;padding:2px 12px;background:var(--paper-2);margin-bottom:12px}

    /* ---------- header ---------- */
    .site-header{position:sticky;top:0;z-index:1030;background:rgba(251,248,241,.96);border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease)}
    .site-header.is-scrolled{box-shadow:0 6px 18px rgba(36,31,24,.10)}
    .header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:74px}
    .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
    .brand:hover{text-decoration:none}
    .brand-mark{width:38px;height:38px;border-radius:10px;background:var(--primary);color:#FFF7EC;display:flex;align-items:center;justify-content:center;border:1px solid var(--primary-dark);box-shadow:var(--shadow-s)}
    .brand-mark svg{width:22px;height:22px}
    .brand-text{font-family:var(--serif);font-weight:700;font-size:19px;color:var(--ink);letter-spacing:.01em}
    .main-nav{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center}
    .nav-link{position:relative;padding:9px 13px;font-size:15px;font-weight:500;color:var(--text);border-radius:8px}
    .nav-link::after{content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease)}
    .nav-link:hover{color:var(--primary);text-decoration:none}
    .nav-link:hover::after{transform:scaleX(1)}
    .nav-link.active{color:var(--primary)}
    .nav-link.active::after{transform:scaleX(1)}
    .header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
    .btn-ghost{font-size:15px;font-weight:500;color:var(--ink);padding:8px 14px;border-radius:10px;border:1px solid transparent}
    .btn-ghost:hover{color:var(--primary);border-color:var(--line);text-decoration:none;background:var(--paper-2)}
    .btn-solid{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 24px;border-radius:12px;background:var(--primary);color:#FFF7EC;font-size:15px;font-weight:600;border:1px solid var(--primary-dark);box-shadow:var(--shadow-s)}
    .btn-solid:hover{background:var(--primary-dark);color:#FFF7EC;text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow)}
    .btn-solid:active{transform:translateY(1px);box-shadow:none}
    .header-actions .btn-solid{height:40px;padding:0 18px}
    .btn-outline{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;border-radius:12px;border:1px solid var(--line-2);background:var(--card);color:var(--ink);font-size:15px;font-weight:600;box-shadow:var(--shadow-s)}
    .btn-outline:hover{border-color:var(--primary);color:var(--primary);text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow)}
    .btn-outline:active{transform:translateY(1px);box-shadow:none}
    .nav-toggle{width:46px;height:42px;border:1px solid var(--line-2);border-radius:12px;background:var(--card);display:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;box-shadow:var(--shadow-s)}
    .nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px}
    .mobile-drawer{background:var(--card);border-left:1px solid var(--line);width:300px}
    .mobile-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
    .drawer-title{font-family:var(--serif);font-weight:700;color:var(--ink);font-size:17px}
    .mobile-drawer .offcanvas-body{padding:12px 20px 24px;display:flex;flex-direction:column}
    .drawer-link{display:flex;align-items:center;height:50px;border-bottom:1px solid var(--line);color:var(--ink);font-size:16px;font-weight:500}
    .drawer-link:hover{color:var(--primary);text-decoration:none}
    .drawer-cta{margin-top:20px;width:100%}

    /* ---------- breadcrumb + article head ---------- */
    .post-hero{padding:40px 0 0}
    .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:24px}
    .crumbs a{color:var(--primary)}
    .crumbs .sep{color:var(--line-2)}
    .crumb-current{color:var(--muted);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .post-head{border-bottom:1px solid var(--line);padding-bottom:26px}
    .cat-badge{display:inline-block;font-size:13px;line-height:26px;padding:0 12px;border-radius:999px;background:#F8ECE5;color:var(--primary);border:1px solid #EBD6C8;margin-bottom:14px}
    .post-head h1{font-size:34px;line-height:1.3;max-width:900px;margin-bottom:16px}
    .post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--muted)}
    .post-meta .dot{color:var(--line-2)}

    /* ---------- article body ---------- */
    .post-main{padding:56px 0 0}
    .post-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
    .article-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);box-shadow:var(--shadow);padding:40px 44px}
    .entry{font-size:17px;line-height:30px;color:var(--text);max-width:100%}
    .entry>*:first-child{margin-top:0}
    .entry p{margin:0 0 1.15em}
    .entry h2{font-size:24px;line-height:1.42;margin:1.7em 0 .7em;padding-left:15px;position:relative}
    .entry h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--primary)}
    .entry h3{font-size:19px;line-height:1.5;margin:1.4em 0 .6em}
    .entry ul,.entry ol{padding-left:1.35em;margin:0 0 1.15em}
    .entry ul{list-style:none;padding-left:0}
    .entry ul>li{position:relative;padding-left:20px}
    .entry ul>li::before{content:"";position:absolute;left:2px;top:12px;width:7px;height:7px;background:#F3DCCF;border:1px solid var(--primary);border-radius:2px;transform:rotate(45deg)}
    .entry ol>li::marker{color:var(--primary);font-weight:600}
    .entry li{margin-bottom:.5em}
    .entry blockquote{margin:1.4em 0;padding:16px 20px;background:#FBF3EC;border-left:3px solid var(--primary);border-radius:0 10px 10px 0;color:var(--ink-soft)}
    .entry blockquote p:last-child{margin-bottom:0}
    .entry img{border-radius:12px;margin:1.5em auto;border:1px solid var(--line)}
    .entry figure{margin:1.5em 0}
    .entry figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
    .entry table{width:100%;border-collapse:collapse;font-size:15px;margin:1.4em 0;display:block;overflow-x:auto}
    .entry th,.entry td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap}
    .entry th{background:var(--paper-2);color:var(--ink);font-weight:600}
    .entry a{color:var(--primary);text-decoration:underline;text-decoration-color:rgba(180,70,42,.35);text-underline-offset:3px}
    .entry a:hover{text-decoration-color:var(--primary)}
    .entry hr{border:none;border-top:1px dashed var(--line-2);margin:2em 0}

    .tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:36px;padding-top:24px;border-top:1px dashed var(--line-2)}
    .tag-row .tag-label{font-size:13px;color:var(--muted);margin-right:2px}
    .tag{display:inline-block;font-size:13px;line-height:26px;padding:0 12px;border-radius:999px;background:var(--paper-2);border:1px solid var(--line);color:var(--ink-soft)}
    .tag:hover{border-color:var(--primary);color:var(--primary);text-decoration:none}

    .post-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

    /* ---------- sidebar ---------- */
    .post-side{position:sticky;top:98px;display:flex;flex-direction:column;gap:20px}
    .side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-s);padding:24px}
    .side-card h3{font-size:16px;margin-bottom:10px}
    .side-card p{font-size:14px;color:var(--muted);margin-bottom:16px}
    .side-cta{background:#FBF3EC;border-color:#EBD6C8}
    .side-links{list-style:none}
    .side-links li{padding:9px 0;border-bottom:1px dashed var(--line)}
    .side-links li:last-child{border-bottom:none;padding-bottom:0}
    .side-links a{font-size:15px;color:var(--ink-soft)}
    .side-links a:hover{color:var(--primary)}
    .side-links .arrow{float:right;color:var(--line-2)}

    /* ---------- generic sections ---------- */
    .section{padding:72px 0}
    .section-head{max-width:720px;margin-bottom:32px}
    .section-head h2{font-size:28px;line-height:1.35}
    .section-head p{color:var(--muted);margin-bottom:0}

    .note-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center}
    .note-figure{margin:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);padding:12px;box-shadow:var(--shadow)}
    .note-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:12px}
    .note-figure figcaption{font-size:13px;color:var(--muted);text-align:center;padding:10px 0 4px}
    .note-list{list-style:none;display:flex;flex-direction:column;gap:18px}
    .note-list li{display:flex;gap:14px;padding-bottom:18px;border-bottom:1px dashed var(--line)}
    .note-list li:last-child{border-bottom:none;padding-bottom:0}
    .note-num{flex:0 0 auto;width:30px;height:30px;border-radius:9px;background:var(--green-soft);color:var(--green);border:1px solid #C9DCD2;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600}
    .note-list h3{font-size:17px;margin-bottom:4px}
    .note-list p{margin:0;font-size:15px;color:var(--muted)}

    .rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
    .rel-card{display:flex;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow-s);transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
    .rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);text-decoration:none}
    .rel-card img{width:104px;height:80px;object-fit:cover;border-radius:10px;border:1px solid var(--line);flex:0 0 auto}
    .rel-card h3{font-size:16px;line-height:1.45;margin-bottom:6px;color:var(--ink)}
    .rel-card p{font-size:13px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

    /* ---------- FAQ ---------- */
    .accordion-item{background:var(--card);border:1px solid var(--line)!important;border-radius:var(--radius);box-shadow:var(--shadow-s);margin-bottom:12px;overflow:hidden}
    .accordion-button{display:flex;align-items:center;background:var(--card);color:var(--ink);font-size:16px;font-weight:600;padding:0 20px;min-height:56px;box-shadow:none!important;border-radius:var(--radius)!important}
    .accordion-button:not(.collapsed){background:var(--paper-2);color:var(--primary)}
    .accordion-button::after{content:"+";background-image:none;width:26px;height:26px;font-size:22px;font-weight:400;line-height:1;display:flex;align-items:center;justify-content:center;color:var(--ink);transition:transform .2s var(--ease),color .2s var(--ease)}
    .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--primary)}
    .accordion-body{padding:18px 20px 22px;font-size:15px;line-height:1.85;color:var(--text);background:var(--paper-2)}

    /* ---------- CTA ---------- */
    .cta-card{position:relative;overflow:hidden;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);box-shadow:var(--shadow);padding:48px}
    .cta-card::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(36,31,24,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(36,31,24,.05) 1px,transparent 1px);background-size:22px 22px;pointer-events:none}
    .cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center}
    .cta-inner h2{font-size:28px;margin-bottom:8px}
    .cta-inner .sub{color:var(--muted);margin-bottom:16px}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap}
    .cta-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
    .cta-badges span{font-size:13px;line-height:26px;padding:0 12px;border-radius:999px;background:var(--paper-2);border:1px solid var(--line);color:var(--ink-soft)}

    /* ---------- empty state ---------- */
    .empty-state{border:1px dashed var(--line-2);border-radius:var(--radius);background:var(--paper-2);padding:48px 24px;text-align:center}
    .empty-state svg{width:44px;height:44px;color:var(--line-2);margin:0 auto 14px}
    .empty-title{font-size:18px;font-weight:600;color:var(--ink);margin-bottom:6px}
    .empty-desc{font-size:14px;color:var(--muted);margin-bottom:20px}

    /* ---------- footer ---------- */
    .site-footer{background:var(--dark);color:#B9B1A3;margin-top:80px;padding:56px 0 0;border-top:4px solid var(--primary)}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:36px;padding-bottom:36px}
    .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
    .footer-brand .brand-mark{box-shadow:none;width:36px;height:36px}
    .footer-brand-text{font-family:var(--serif);font-size:18px;font-weight:700;color:#FDF8EF}
    .footer-desc{font-size:14px;line-height:1.8;color:#9C9488;margin:0}
    .footer-title{color:#FDF8EF;font-size:15px;font-weight:600;margin-bottom:14px}
    .footer-links{list-style:none}
    .footer-links li{margin-bottom:10px}
    .footer-links a{color:#B9B1A3;font-size:14px}
    .footer-links a:hover{color:#FFF;text-decoration:none}
    .footer-note{font-size:14px;line-height:1.85;color:#9C9488;margin:0}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0 24px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:#8D8579}

    /* ---------- to top ---------- */
    #toTop{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;border:1px solid var(--primary-dark);background:var(--primary);color:#FFF7EC;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;z-index:1050;cursor:pointer}
    #toTop.show{opacity:1;visibility:visible;transform:translateY(0)}
    #toTop:hover{background:var(--primary-dark)}

    @media (max-width:1199px){
        .section{padding:64px 0}
        .rel-grid{gap:20px}
    }
    @media (max-width:991px){
        .main-nav,.header-actions{display:none}
        .nav-toggle{display:flex}
        .post-layout{grid-template-columns:1fr;gap:32px}
        .post-side{position:static}
        .article-card{padding:32px 26px}
        .note-grid{grid-template-columns:1fr;gap:28px}
        .rel-grid{grid-template-columns:1fr}
        .cta-inner{grid-template-columns:1fr;gap:24px}
        .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
        .post-head h1{font-size:28px}
        .section{padding:56px 0}
    }
    @media (max-width:575px){
        .wrap{padding:0 16px}
        .header-inner{height:66px;gap:12px}
        .brand-text{font-size:16px}
        .post-head h1{font-size:24px}
        .section-head h2,.cta-inner h2{font-size:22px}
        .article-card{padding:26px 18px;border-radius:14px}
        .entry{font-size:16px;line-height:28px}
        .crumb-current{max-width:160px}
        .footer-grid{grid-template-columns:1fr}
        .cta-card{padding:28px 20px}
        .post-actions .btn-outline,.post-actions .btn-solid{width:100%}
    }
    @media (prefers-reduced-motion:reduce){
        *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
    }

/* roulang page: category1 */
:root{
  --brand:#1769E0;
  --brand-700:#0E4FB0;
  --brand-50:#E8F1FE;
  --brand-25:#F2F7FE;
  --accent:#F5A524;
  --success:#12B76A;
  --danger:#F04438;
  --ink:#0F1B2D;
  --text:#475467;
  --muted:#98A2B3;
  --line:#E4E9F2;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --footer-bg:#0E1A2B;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:12px;
  --sh-sm:0 1px 2px rgba(15,27,45,.06);
  --sh-card:0 8px 24px rgba(15,27,45,.06);
  --sh-hover:0 16px 40px rgba(15,27,45,.10);
  --ease:cubic-bezier(.2,.8,.2,1);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,sans-serif;
  font-size:16px;
  line-height:28px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.3}
h1{font-size:32px;line-height:40px;font-weight:700}
h2{font-size:28px;line-height:36px;font-weight:700}
h3{font-size:20px;line-height:28px;font-weight:600}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-700);text-decoration:underline}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(23,105,224,.35);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{margin-bottom:36px;max-width:760px}
.sec-title{position:relative;padding-left:16px}
.sec-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand)}
.sec-sub{margin-top:12px;font-size:15px;line-height:26px;color:var(--text)}
.eyebrow{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--brand-50);color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.02em}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease)}
.site-header.is-stuck{box-shadow:var(--sh-card)}
.header-inner{display:flex;align-items:center;gap:16px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:17px;line-height:22px;flex:0 0 auto}
.brand:hover{color:var(--ink);text-decoration:none}
.brand-mark{width:38px;height:38px;border-radius:11px;background:var(--brand);color:#fff;display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-mark svg{width:22px;height:22px}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:12px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;font-size:15px;font-weight:500;color:var(--text);border-radius:10px;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease)}
.nav-link:hover{color:var(--brand);text-decoration:none}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border:1px solid transparent;border-radius:var(--r-btn);font-size:15px;font-weight:600;cursor:pointer;transition:transform .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);text-decoration:none}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-card)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);background:#fff;transform:translateY(-1px);box-shadow:var(--sh-sm)}
.btn-text{background:transparent;color:var(--text);font-weight:500;height:40px;padding:0 12px}
.btn-text:hover{color:var(--brand);background:var(--brand-25)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:48px;padding:0 28px}
.nav-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink)}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- 移动端抽屉 ---------- */
.mobile-drawer{width:300px}
.mobile-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.drawer-brand{font-weight:700;color:var(--ink);font-size:15px;line-height:20px;max-width:180px}
.mobile-drawer .offcanvas-body{padding:8px 20px 24px;display:flex;flex-direction:column}
.drawer-link{display:flex;align-items:center;height:48px;border-bottom:1px solid var(--line);font-size:15px;font-weight:500;color:var(--text)}
.drawer-link:hover{color:var(--brand);text-decoration:none}
.drawer-link.active{color:var(--brand);font-weight:600}
.drawer-cta{margin-top:20px;width:100%}

/* ---------- 频道头图 ---------- */
.page-hero{
  position:relative;
  padding:52px 0 60px;
  color:#fff;
  background-image:linear-gradient(120deg,rgba(11,55,124,.90),rgba(23,105,224,.76)),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
}
.page-hero h1{color:#fff;max-width:820px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;line-height:20px;color:rgba(255,255,255,.78);margin-bottom:18px}
.crumb a{color:#fff}
.crumb a:hover{color:#fff;text-decoration:underline}
.crumb span.sep{opacity:.55}
.hero-lead{margin-top:16px;max-width:720px;font-size:16px;line-height:28px;color:rgba(255,255,255,.9)}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-pill{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);font-size:13px;color:#fff}

/* ---------- 胶囊频道导航 ---------- */
.chip-bar{background:#fff;border-bottom:1px solid var(--line)}
.chip-scroll{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:thin}
.chip-scroll::-webkit-scrollbar{height:6px}
.chip-scroll::-webkit-scrollbar-thumb{background:#D6DEEA;border-radius:999px}
.chip{flex:0 0 auto;display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:999px;background:#F1F5FA;color:var(--text);font-size:14px;font-weight:500;white-space:nowrap;transition:background-color .2s var(--ease),color .2s var(--ease)}
.chip:hover{background:var(--brand-50);color:var(--brand);text-decoration:none}
.chip.active{background:var(--brand);color:#fff}
.chip.active:hover{background:var(--brand-700);color:#fff}

/* ---------- 通用卡片 ---------- */
.card-surface{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card)}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--brand-50);color:var(--brand);font-size:13px;font-weight:600}
.tag-accent{background:#FEF3E2;color:#B26A00}

/* ---------- 上部：介绍 + 信息卡 ---------- */
.intro-grid{display:grid;grid-template-columns:minmax(0,1.9fr) minmax(0,1fr);gap:24px;align-items:start}
.intro-text{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-sm)}
.intro-text h2{margin-bottom:16px}
.intro-text p{font-size:16px;line-height:28px}
.intro-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 20px;margin-top:20px;padding-top:22px;border-top:1px solid var(--line)}
.intro-points li{position:relative;padding-left:22px;font-size:15px;line-height:26px;color:var(--text)}
.intro-points li::before{content:"";position:absolute;left:6px;top:11px;width:8px;height:8px;border-radius:2px;background:var(--brand);transform:rotate(45deg)}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-card);overflow:hidden}
.side-card-cover{position:relative}
.side-card-cover img{width:100%;aspect-ratio:16/10;object-fit:cover}
.side-card-cover .veil{position:absolute;inset:0;background:linear-gradient(120deg,rgba(23,105,224,.28),rgba(14,79,176,.12))}
.side-card-body{padding:24px}
.side-card-body h3{margin-bottom:16px}
.info-list{display:grid;gap:14px}
.info-list li{display:grid;grid-template-columns:84px minmax(0,1fr);gap:12px;align-items:baseline;padding-bottom:14px;border-bottom:1px dashed var(--line);font-size:14px;line-height:24px}
.info-list li:last-child{padding-bottom:0;border-bottom:none}
.info-list dt,.info-key{color:var(--muted);font-weight:600}
.side-card-foot{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px}

/* ---------- 中部：资讯分类导览 ---------- */
.dir-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.dir-card{display:flex;align-items:flex-start;gap:16px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;box-shadow:var(--sh-sm);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.dir-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card);border-color:#C6DAF8;text-decoration:none}
.dir-num{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;min-width:42px;height:28px;border-radius:8px;background:var(--brand-50);color:var(--brand);font-size:13px;font-weight:700;letter-spacing:.04em}
.dir-body{flex:1 1 auto;min-width:0}
.dir-title{display:block;font-size:17px;font-weight:600;color:var(--ink);line-height:26px}
.dir-desc{display:block;margin-top:6px;font-size:14px;line-height:24px;color:var(--text)}
.dir-go{flex:0 0 auto;align-self:center;font-size:13px;font-weight:600;color:var(--brand);white-space:nowrap}
.dir-card:hover .dir-go{color:var(--brand-700)}

/* ---------- 常见疑问 ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.9fr);gap:36px;align-items:start}
.faq-note{background:var(--brand-25);border:1px solid #DCE8FB;border-radius:var(--r-lg);padding:28px}
.faq-note h3{margin-bottom:12px}
.faq-note p{font-size:14px;line-height:24px;color:var(--text)}
.faq-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:600}
.accordion.faq-acc{border:none}
.faq-acc .accordion-item{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--sh-sm);margin-bottom:12px;overflow:hidden}
.faq-acc .accordion-item:first-of-type,.faq-acc .accordion-item:last-of-type{border-radius:12px}
.faq-acc .accordion-header{margin:0}
.faq-acc .accordion-button{display:flex;align-items:center;gap:16px;width:100%;min-height:56px;padding:14px 20px;background:#fff;color:var(--ink);font-size:16px;font-weight:600;line-height:26px;border:none;box-shadow:none;border-radius:12px}
.faq-acc .accordion-button:not(.collapsed){background:#fff;color:var(--brand);box-shadow:none}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-acc .accordion-button::after{content:"+";background-image:none;width:26px;height:26px;display:inline-flex;align-items:center;justify-content:center;font-size:20px;font-weight:400;color:var(--muted);transition:transform .2s var(--ease),color .2s var(--ease);margin-left:auto;flex:0 0 auto}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--brand)}
.faq-acc .accordion-body{background:var(--bg);padding:18px 20px 22px;font-size:15px;line-height:27px;color:var(--text)}

/* ---------- 转化区 ---------- */
.cta-card{
  position:relative;
  background:var(--brand-50);
  border-radius:var(--r-lg);
  padding:48px;
  display:flex;
  align-items:center;
  gap:32px;
  flex-wrap:wrap;
  overflow:hidden;
}
.cta-card::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(23,105,224,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(23,105,224,.06) 1px,transparent 1px);
  background-size:28px 28px;
  pointer-events:none;
}
.cta-main{position:relative;flex:1 1 380px;min-width:0}
.cta-main h2{margin-bottom:10px}
.cta-sub{font-size:15px;line-height:26px;color:var(--text)}
.cta-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.cta-badges span{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid #D5E4FA;color:var(--brand);font-size:13px;font-weight:600}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;border:none;background:var(--brand);color:#fff;display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--sh-card);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease),background-color .2s var(--ease);z-index:1040;cursor:pointer}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-700)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:var(--muted);margin-top:0;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.4fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px}
.footer-desc{margin-top:14px;font-size:14px;line-height:24px;max-width:36ch}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-links{display:grid;gap:10px}
.footer-links a{color:var(--muted);font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:none}
.footer-note{font-size:14px;line-height:24px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.10);font-size:13px;line-height:22px}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec:80px}
}
@media (max-width:991px){
  :root{--sec:72px}
  h1{font-size:28px;line-height:36px}
  h2{font-size:24px;line-height:32px}
  .main-nav{display:none}
  .header-actions .btn-text,.header-actions .btn-primary{display:none}
  .nav-toggle{display:inline-flex}
  .intro-grid,.faq-wrap{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
}
@media (max-width:767px){
  :root{--sec:56px}
  .wrap{padding:0 16px}
  h1{font-size:24px;line-height:32px}
  h2{font-size:22px;line-height:30px}
  .page-hero{padding:36px 0 44px}
  .dir-grid{grid-template-columns:minmax(0,1fr)}
  .intro-points{grid-template-columns:minmax(0,1fr)}
  .cta-card{padding:32px 24px;gap:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .to-top{right:16px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category2 */
:root{
  --brand:#1769E0;
  --brand-700:#0E4FB0;
  --brand-50:#E8F1FE;
  --brand-25:#F2F7FE;
  --accent:#F5A524;
  --success:#12B76A;
  --danger:#F04438;
  --ink:#0F1B2D;
  --text:#475467;
  --muted:#98A2B3;
  --line:#E4E9F2;
  --bg:#FAF8F4;
  --paper:#FFFFFF;
  --footer:#0E1A2B;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:12px;
  --sh-sm:0 1px 2px rgba(15,27,45,.06);
  --sh-card:0 8px 24px rgba(15,27,45,.07);
  --sh-hover:0 16px 40px rgba(15,27,45,.11);
  --ease:200ms cubic-bezier(.2,.8,.2,1);
  --sec:96px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,sans-serif;
  font-size:16px;line-height:28px;color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease)}
a:hover{color:var(--brand-700);text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(23,105,224,.35);outline-offset:2px}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;line-height:1.28}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section-tight{padding:64px 0}
.sec-head{margin-bottom:36px}
.sec-head h2{font-size:28px;line-height:36px;display:flex;align-items:center;gap:14px}
.sec-head h2::before{content:"";width:5px;height:26px;border-radius:3px;background:var(--brand);flex:none}
.sec-head p{margin-top:10px;font-size:15px;color:var(--muted)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--brand);background:var(--brand-50);
  border-radius:999px;height:26px;padding:0 12px;margin-bottom:14px;font-weight:600;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-card)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:17px;line-height:20px;letter-spacing:.2px}
.brand:hover{color:var(--ink);text-decoration:none}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;flex:none;
  box-shadow:0 4px 10px rgba(23,105,224,.28);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:inline-block}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px}
.main-nav .nav-link{
  position:relative;padding:10px 12px;font-size:15px;font-weight:500;color:var(--text);
  border-radius:10px;
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.main-nav .nav-link:hover{color:var(--brand);text-decoration:none;background:var(--brand-25)}
.main-nav .nav-link:hover::after{transform:scaleX(1)}
.main-nav .nav-link.active{color:var(--brand);font-weight:600}
.main-nav .nav-link.active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.link-login{font-size:15px;color:var(--text);padding:8px 10px;border-radius:10px}
.link-login:hover{color:var(--brand);background:var(--brand-25);text-decoration:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:inherit;font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
}
.btn:focus-visible{outline:3px solid rgba(23,105,224,.35);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff;height:44px;padding:0 24px;box-shadow:0 6px 16px rgba(23,105,224,.22)}
.btn-primary:hover{background:var(--brand-700);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 12px 26px rgba(23,105,224,.26)}
.btn-primary:active{transform:translateY(1px)}
.btn-primary.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);height:44px;padding:0 24px}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);text-decoration:none;transform:translateY(-1px)}
.btn-outline{background:#fff;color:var(--text);border-color:var(--line);height:40px;padding:0 20px;font-size:14px}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);text-decoration:none}
.btn[disabled],.btn.disabled{opacity:.4;pointer-events:none}
.hamburger{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;
  align-items:center;justify-content:center;color:var(--ink);cursor:pointer;
}
.hamburger svg{width:22px;height:22px}

/* offcanvas */
.offcanvas.drawer{width:300px;background:#fff}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer-brand{font-weight:700;color:var(--ink);font-size:15px;line-height:20px}
.drawer-nav{padding:8px 0}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 20px;color:var(--text);font-size:15px;border-bottom:1px solid var(--line);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--brand);background:var(--brand-25);text-decoration:none}
.drawer-foot{padding:20px;margin-top:auto}

/* ---------- banner ---------- */
.banner{
  position:relative;overflow:hidden;color:#fff;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  min-height:272px;display:flex;align-items:center;
}
.banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(14,79,176,.88) 0%,rgba(23,105,224,.72) 52%,rgba(15,27,45,.68) 100%);
}
.banner-inner{position:relative;z-index:2;padding:56px 0 52px}
.crumbs{font-size:13px;color:rgba(255,255,255,.78);margin-bottom:14px}
.crumbs a{color:rgba(255,255,255,.92)}
.crumbs a:hover{color:#fff}
.crumbs .sep{margin:0 8px;color:rgba(255,255,255,.5)}
.banner h1{color:#fff;font-size:32px;line-height:40px;max-width:760px}
.banner .lede{margin-top:14px;font-size:16px;line-height:28px;color:rgba(255,255,255,.9);max-width:640px}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.banner-tag{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.34);
  color:#fff;border-radius:999px;height:28px;padding:0 14px;
}

/* ---------- channels ---------- */
.channels{border-bottom:1px solid var(--line);background:#fff}
.channels-inner{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.channels-inner::-webkit-scrollbar{display:none}
.chip{
  flex:none;display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 18px;border-radius:999px;font-size:14px;font-weight:600;
  background:#F1F5FA;color:var(--text);border:1px solid transparent;white-space:nowrap;
}
.chip:hover{text-decoration:none;color:var(--brand);border-color:var(--brand-50)}
.chip.active{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(23,105,224,.24)}
.chip.active:hover{color:#fff}

/* ---------- cards ---------- */
.card-base{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card-base:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.pad{padding:28px}

/* overview strip */
.strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.strip-item{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.strip-item:hover{transform:translateY(-2px);box-shadow:var(--sh-card);border-color:#CFE0FA}
.strip-ico{
  width:44px;height:44px;border-radius:12px;background:var(--brand-50);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.strip-ico svg{width:22px;height:22px}
.strip-item h3{font-size:16px;line-height:24px;font-weight:600;margin-bottom:6px}
.strip-item p{font-size:14px;line-height:22px;color:var(--muted);margin:0}

/* compare */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.plan{
  position:relative;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease);
}
.plan:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.plan-top{height:4px;background:var(--line)}
.plan.featured{border-color:#BFD8FA;background:linear-gradient(180deg,#F4F9FF 0%,#FFFFFF 42%)}
.plan.featured .plan-top{background:var(--brand)}
.plan-badge{
  position:absolute;top:20px;right:20px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--accent);color:#3D2600;font-size:13px;font-weight:700;
  display:inline-flex;align-items:center;
}
.plan-media{margin:24px 24px 0;border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.plan-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--ease)}
.plan:hover .plan-media img{transform:scale(1.03)}
.plan-body{padding:24px}
.plan-body h3{font-size:20px;line-height:28px;font-weight:600}
.plan-sub{font-size:14px;color:var(--muted);margin-top:6px}
.plan-list{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.plan-list li{display:flex;gap:10px;font-size:15px;line-height:24px;color:var(--text)}
.plan-list .tick{
  flex:none;width:20px;height:20px;border-radius:50%;background:var(--success);color:#fff;
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.plan-list .tick svg{width:12px;height:12px}
.plan-list .dash{
  flex:none;width:20px;height:20px;border-radius:50%;background:#EEF1F6;color:var(--muted);
  display:flex;align-items:center;justify-content:center;margin-top:2px;font-size:12px;font-weight:700;
}
.plan-list li.muted{color:var(--muted)}
.plan-foot{margin-top:24px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.note{font-size:13px;line-height:20px;color:var(--muted);margin-top:18px}

/* timeline */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:19px;top:12px;bottom:12px;width:1px;background:var(--line);
}
.step{position:relative;display:flex;gap:20px;padding:0 0 26px}
.step:last-child{padding-bottom:0}
.step-no{
  position:relative;z-index:2;flex:none;width:40px;height:40px;border-radius:12px;
  background:#fff;border:1px solid var(--line);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  box-shadow:var(--sh-sm);
}
.step.live .step-no{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(23,105,224,.24)}
.step-card{
  flex:1;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-sm);
  transition:transform var(--ease),box-shadow var(--ease);
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card)}
.step-card h3{font-size:17px;line-height:26px;font-weight:600;margin-bottom:6px}
.step-card p{font-size:15px;line-height:26px;margin:0}
.step-meta{display:inline-block;margin-top:10px;font-size:13px;color:var(--brand);background:var(--brand-50);border-radius:999px;height:26px;line-height:26px;padding:0 12px;font-weight:600}
.cta-inline{margin-top:28px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}

/* faq */
.faq .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;
  box-shadow:var(--sh-sm);overflow:hidden;
}
.faq .accordion-item:last-child{margin-bottom:0}
.faq .accordion-button{
  background:#fff;color:var(--ink);font-size:16px;font-weight:600;line-height:24px;
  padding:16px 20px;border:0;box-shadow:none;
}
.faq .accordion-button:not(.collapsed){color:var(--brand);background:#fff}
.faq .accordion-button:focus{box-shadow:none;border:0}
.faq .accordion-button::after{
  content:none;
}
.faq .accordion-button .plus{
  margin-left:auto;flex:none;width:26px;height:26px;border-radius:8px;background:var(--brand-25);
  color:var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:600;line-height:1;transition:transform var(--ease),background-color var(--ease),color var(--ease);
}
.faq .accordion-button:not(.collapsed) .plus{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq .accordion-body{
  background:#FAFCFF;font-size:15px;line-height:27px;color:var(--text);
  padding:18px 20px 22px;border-top:1px solid var(--line);
}
.faq-more{margin-top:22px;font-size:15px}

/* cta */
.cta-band{
  background:var(--brand-50);border:1px solid #CFE0FA;border-radius:var(--r-lg);
  padding:44px 48px;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background-image:linear-gradient(var(--brand) 1px,transparent 1px),linear-gradient(90deg,var(--brand) 1px,transparent 1px);
  background-size:28px 28px;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;gap:40px;justify-content:space-between}
.cta-inner h2{font-size:28px;line-height:36px}
.cta-inner .cta-sub{margin-top:10px;font-size:15px;color:var(--text)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.cta-flags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.cta-flag{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;
  background:#fff;border:1px solid #CFE0FA;color:var(--brand);border-radius:999px;height:26px;padding:0 12px;
}

/* footer */
.site-footer{background:var(--footer);color:var(--muted);margin-top:0;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:14px}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;box-shadow:none}
.footer-brand .brand-mark svg{width:20px;height:20px}
.footer-desc{font-size:14px;line-height:24px;color:var(--muted)}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-links li{margin-bottom:10px}
.footer-links a{color:var(--muted);font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:none}
.footer-note{font-size:14px;line-height:24px;color:var(--muted)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C8899;
}

/* back to top */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--brand);color:#fff;border:0;display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 26px rgba(23,105,224,.3);cursor:pointer;opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease),transform var(--ease);z-index:1040;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--brand-700);transform:translateY(-2px)}
.to-top svg{width:20px;height:20px}

/* responsive */
@media (max-width:1199.98px){
  :root{--sec:80px}
  .wrap{max-width:100%}
}
@media (max-width:991.98px){
  :root{--sec:72px}
  .main-nav,.header-actions .link-login,.header-actions .btn-primary{display:none}
  .hamburger{display:flex}
  .brand{font-size:15px}
  .brand-text{display:block;line-height:18px}
  .strip{grid-template-columns:repeat(2,1fr)}
  .compare{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .banner h1{font-size:28px;line-height:36px}
}
@media (max-width:767.98px){
  :root{--sec:56px}
  .wrap{padding:0 16px}
  .header-inner{height:64px;gap:12px}
  .banner{min-height:240px}
  .banner-inner{padding:40px 0 36px}
  .banner h1{font-size:24px;line-height:32px}
  .sec-head h2{font-size:22px;line-height:30px}
  .cta-band{padding:32px 24px}
  .cta-inner h2{font-size:22px;line-height:30px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .plan-media{margin:20px 20px 0}
  .plan-body{padding:20px}
  .card-base .pad,.step-card{padding:20px}
}
@media (max-width:575.98px){
  .strip{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category3 */
:root{
  --brand:#1769E0;
  --brand-700:#0E4FB0;
  --brand-50:#E8F1FE;
  --brand-25:#F2F7FE;
  --accent:#F5A524;
  --success:#12B76A;
  --danger:#F04438;
  --ink:#0F1B2D;
  --text:#475467;
  --muted:#98A2B3;
  --line:#E4E9F2;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --footer-bg:#0E1A2B;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:12px;
  --sh-sm:0 1px 2px rgba(15,27,45,.06);
  --sh-card:0 8px 24px rgba(15,27,45,.06);
  --sh-hover:0 16px 40px rgba(15,27,45,.10);
  --tr:200ms cubic-bezier(.2,.8,.2,1);
  --sec:96px;
}
*,
*::before,
*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,sans-serif;
  font-size:16px;
  line-height:28px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--tr);}
a:hover{color:var(--brand-700);text-decoration:underline;}
a:focus-visible,
button:focus-visible{outline:3px solid rgba(23,105,224,.35);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:.2px;}
h1{font-size:32px;line-height:40px;}
h2{font-size:28px;line-height:36px;}
h3{font-size:20px;line-height:28px;font-weight:600;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}

.wrap{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){
  .wrap{max-width:1280px;}
}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec) 0;}
.section.tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-title{position:relative;padding-left:16px;}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand);
}
.section-sub{font-size:15px;color:var(--muted);margin-top:8px;padding-left:16px;}
.eyebrow{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-50);color:var(--brand);font-size:13px;font-weight:600;line-height:26px;
}
.eyebrow.accent{background:#FEF4E3;color:#A76A05;}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 26px;border:0;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;text-decoration:none;box-shadow:var(--sh-sm);
  transition:background var(--tr),transform var(--tr),box-shadow var(--tr);
}
.btn-main:hover{background:#1460CE;color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--sh-card);}
.btn-main:active{transform:translateY(1px);}
.btn-main.sz-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 22px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--ink);font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;text-decoration:none;transition:border-color var(--tr),color var(--tr),transform var(--tr),box-shadow var(--tr);
}
.btn-line:hover{border-color:var(--brand);color:var(--brand);text-decoration:none;transform:translateY(-1px);box-shadow:var(--sh-sm);}
.btn-line:active{transform:translateY(1px);}
.btn-ghost{
  display:inline-flex;align-items:center;height:40px;padding:0 12px;border-radius:10px;
  color:var(--text);font-size:15px;font-weight:500;text-decoration:none;transition:color var(--tr),background var(--tr);
}
.btn-ghost:hover{color:var(--brand);background:var(--brand-25);text-decoration:none;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--tr);
}
.site-header.is-scrolled{box-shadow:var(--sh-card);}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:38px;height:38px;flex:0 0 auto;border-radius:11px;background:var(--brand);color:#fff;
  display:grid;place-items:center;box-shadow:var(--sh-sm);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.2px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-block;padding:10px 12px;
  font-size:15px;font-weight:500;color:var(--text);text-decoration:none;border-radius:10px;
  transition:color var(--tr);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--tr);
}
.nav-link:hover{color:var(--brand);text-decoration:none;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{transform:scaleX(1);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:11px;
  background:#fff;color:var(--ink);place-items:center;cursor:pointer;transition:border-color var(--tr),color var(--tr);
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
.nav-toggle svg{width:20px;height:20px;}

.mobile-nav{width:300px;background:#fff;border-left:1px solid var(--line);}
.mobile-nav .offcanvas-header{padding:16px 20px;border-bottom:1px solid var(--line);}
.mobile-nav .offcanvas-title{font-size:15px;font-weight:700;color:var(--ink);}
.mobile-nav .offcanvas-body{padding:0;display:flex;flex-direction:column;height:100%;}
.m-nav-link{
  display:flex;align-items:center;height:48px;padding:0 20px;
  font-size:15px;color:var(--text);text-decoration:none;border-bottom:1px solid var(--line);
  transition:background var(--tr),color var(--tr);
}
.m-nav-link:hover{background:var(--brand-25);color:var(--brand);text-decoration:none;}
.m-nav-link.active{color:var(--brand);font-weight:600;background:var(--brand-25);}
.m-nav-foot{margin-top:auto;padding:20px;}
.m-nav-foot .btn-main{width:100%;}

/* ---------- 分类头图 ---------- */
.cat-hero{position:relative;overflow:hidden;background:var(--footer-bg);}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(112deg,rgba(14,26,43,.74),rgba(14,79,176,.52)),
    url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.cat-hero-inner{position:relative;z-index:1;padding:54px 0 62px;color:#fff;}
.breadcrumb-line{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:18px;flex-wrap:wrap;}
.breadcrumb-line a{color:rgba(255,255,255,.9);text-decoration:none;transition:color var(--tr);}
.breadcrumb-line a:hover{color:#fff;text-decoration:underline;}
.breadcrumb-line .current{color:rgba(255,255,255,.7);}
.cat-hero h1{color:#fff;max-width:860px;}
.cat-hero-desc{margin-top:14px;font-size:16px;line-height:28px;color:rgba(255,255,255,.86);max-width:660px;}
.cat-hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-chip{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
  color:#fff;font-size:13px;line-height:28px;
}

/* ---------- 胶囊频道导航 ---------- */
.chip-bar{background:#fff;border-bottom:1px solid var(--line);}
.chip-scroll{display:flex;gap:10px;padding-top:14px;padding-bottom:14px;overflow-x:auto;scrollbar-width:none;}
.chip-scroll::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:999px;
  background:#F1F5FA;color:var(--text);font-size:14px;font-weight:600;text-decoration:none;
  transition:background var(--tr),color var(--tr),box-shadow var(--tr);
}
.chip:hover{background:var(--brand-50);color:var(--brand);text-decoration:none;}
.chip.active{background:var(--brand);color:#fff;box-shadow:var(--sh-sm);}
.chip.active:hover{color:#fff;background:var(--brand-700);}

/* ---------- 单列宽正文 ---------- */
.reading-col{max-width:800px;margin:0 auto;}
.reading-col p{font-size:17px;line-height:30px;color:var(--text);}
.lead-quote{
  margin:28px 0;padding:20px 24px;border-left:3px solid var(--brand);border-radius:0 var(--r-card) var(--r-card) 0;
  background:var(--brand-25);color:var(--ink);font-size:16px;line-height:28px;font-weight:600;
}

/* ---------- 交替图文 ---------- */
.feature-list{display:flex;flex-direction:column;gap:56px;}
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.feature-row.reverse .feature-media{order:2;}
.feature-media{
  border-radius:var(--r-card);overflow:hidden;background:#fff;border:1px solid var(--line);
  box-shadow:var(--sh-card);
}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform var(--tr);}
.feature-media:hover img{transform:scale(1.03);}
.feature-body h3{margin-bottom:12px;}
.feature-body p{font-size:16px;line-height:28px;margin-bottom:14px;}
.feature-points{display:flex;flex-direction:column;gap:10px;margin-top:16px;}
.feature-points li{
  position:relative;padding-left:20px;font-size:15px;line-height:24px;color:var(--text);
}
.feature-points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;
  background:var(--brand);transform:rotate(45deg);
}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  height:26px;padding:0 12px;border-radius:999px;background:var(--brand-50);color:var(--brand);
  font-size:13px;font-weight:600;margin-bottom:14px;
}

/* ---------- 步骤卡 ---------- */
.step-list{display:flex;flex-direction:column;gap:20px;max-width:900px;margin:0 auto;}
.step-item{
  display:grid;grid-template-columns:64px 1fr;gap:24px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh-card);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.step-item:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#D5E2F7;}
.step-num{
  width:56px;height:56px;border-radius:50%;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:20px;font-weight:700;line-height:1;
  box-shadow:0 6px 16px rgba(23,105,224,.22);font-variant-numeric:tabular-nums;
}
.step-item:nth-child(2) .step-num{background:var(--brand-700);}
.step-item:nth-child(3) .step-num{background:#3A86EC;}
.step-item:nth-child(4) .step-num{background:var(--brand-700);}
.step-content h3{margin-bottom:8px;}
.step-content p{font-size:15px;line-height:26px;}
.step-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.mini-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-50);color:var(--brand);font-size:13px;line-height:26px;
}
.mini-tag.warm{background:#FEF4E3;color:#A76A05;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-acc .accordion-item{
  border:0;background:transparent;margin-bottom:12px;border-radius:var(--r-btn);overflow:hidden;
}
.faq-acc .accordion-button{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-btn) !important;
  padding:14px 22px;min-height:56px;
  font-size:16px;font-weight:600;color:var(--ink);line-height:26px;
  box-shadow:var(--sh-sm);transition:color var(--tr),border-color var(--tr),box-shadow var(--tr);
}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--brand);border-color:#CFE0FA;box-shadow:var(--sh-card);
}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:var(--brand);}
.faq-acc .accordion-button::after{
  content:"";width:18px;height:18px;margin-left:auto;flex:0 0 auto;
  background-color:transparent;
  background-image:
    linear-gradient(var(--brand),var(--brand)),
    linear-gradient(var(--brand),var(--brand));
  background-size:12px 2px,2px 12px;
  background-position:center,center;
  background-repeat:no-repeat;
  transition:transform var(--tr);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.faq-acc .accordion-body{
  background:var(--bg);border:1px solid var(--line);border-top:0;
  border-radius:0 0 var(--r-btn) var(--r-btn);
  padding:18px 22px;font-size:15px;line-height:27px;color:var(--text);
}
.faq-acc .accordion-collapse{border-radius:0 0 var(--r-btn) var(--r-btn);}
.faq-foot{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:center;margin-top:34px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--brand-50);
  border-radius:var(--r-lg);padding:48px;
  display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;
  border:1px solid #D8E7FD;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(23,105,224,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(23,105,224,.06) 1px,transparent 1px);
  background-size:28px 28px;pointer-events:none;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band p{margin-top:12px;font-size:16px;line-height:28px;color:var(--text);max-width:520px;}
.cta-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:var(--muted);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--brand);}
.footer-brand-text{font-size:16px;font-weight:700;color:#fff;}
.footer-desc{font-size:14px;line-height:24px;color:var(--muted);max-width:320px;}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:var(--muted);font-size:14px;text-decoration:none;transition:color var(--tr);}
.footer-links a:hover{color:#fff;text-decoration:none;}
.footer-note{font-size:14px;line-height:24px;color:var(--muted);}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C8AA0;
}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border:0;border-radius:50%;
  background:var(--brand);color:#fff;display:grid;place-items:center;cursor:pointer;
  box-shadow:var(--sh-card);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--tr),transform var(--tr),visibility var(--tr),background var(--tr);
  z-index:1040;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--brand-700);}
.back-top svg{width:20px;height:20px;}

/* ---------- 响应式 ---------- */
@media (min-width:992px) and (max-width:1199px){
  :root{--sec:80px;}
  .cta-band{padding:40px;gap:24px;}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px;}
  .footer-grid > div:last-child{grid-column:1 / -1;}
}
@media (max-width:991px){
  :root{--sec:72px;}
  .main-nav{display:none;}
  .nav-actions .btn-ghost,
  .nav-actions .btn-main{display:none;}
  .nav-toggle{display:grid;}
  .feature-row{grid-template-columns:1fr;gap:28px;}
  .feature-row.reverse .feature-media{order:0;}
  .cta-band{grid-template-columns:1fr;padding:36px;gap:24px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-grid > div:first-child{grid-column:1 / -1;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  .wrap{padding:0 16px;}
  h1{font-size:26px;line-height:36px;}
  h2{font-size:22px;line-height:30px;}
  .cat-hero-inner{padding:40px 0 46px;}
  .cat-hero-desc{font-size:15px;line-height:26px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px;}
  .reading-col p{font-size:16px;line-height:28px;}
  .step-item{grid-template-columns:48px 1fr;gap:16px;padding:22px 20px;}
  .step-num{width:44px;height:44px;font-size:17px;}
  .cta-band{padding:28px 22px;}
  .cta-actions .btn-main,
  .cta-actions .btn-line{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .back-top{right:16px;bottom:16px;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .cat-hero-tags{gap:8px;}
  .hero-chip{font-size:12px;padding:0 10px;}
  .faq-acc .accordion-button{font-size:15px;padding:12px 16px;}
  .faq-acc .accordion-body{padding:16px;}
  .feature-points li{font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}