/* roulang page: index */
:root{
  --bg:#F7F5F2;
  --ink:#16122B;
  --brand:#6D3BFF;
  --brand-light:#A98BFF;
  --brand-2:#22D3B8;
  --accent:#FF8A3D;
  --text:#2A2735;
  --muted:#6B6879;
  --line:#E6E2DA;
  --card:#FFFFFF;
  --soft:#F0EDE8;
  --danger:#E5484D;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-card:0 1px 2px rgba(22,18,43,.04),0 8px 24px rgba(22,18,43,.06);
  --shadow-hover:0 12px 32px rgba(22,18,43,.10);
  --sidebar-w:240px;
  --ease:200ms ease;
  --ff:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,'Segoe UI',sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--ff);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}
::selection{background:rgba(109,59,255,.18)}
.num{font-variant-numeric:tabular-nums}

/* ---------- 布局骨架 ---------- */
.app-shell{display:flex;min-height:100vh}
.main-area{
  flex:1 1 auto;
  min-width:0;
  margin-left:var(--sidebar-w);
  display:flex;
  flex-direction:column;
}
.container-x{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:28px;
  flex-wrap:wrap;
}
.section-title{
  font-size:28px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:.2px;
}
.section-desc{
  font-size:14px;
  color:var(--muted);
  margin-top:8px;
  max-width:620px;
}
.section-note{font-size:13px;color:var(--muted)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 侧边导航 ---------- */
.sidebar{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--sidebar-w);
  background:var(--ink);
  color:#fff;
  display:flex;
  flex-direction:column;
  padding:26px 18px 22px;
  z-index:1040;
  overflow-y:auto;
}
.sidebar-logo{
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 8px 24px;
  border-bottom:1px solid rgba(255,255,255,.10);
  margin-bottom:20px;
}
.logo-mark{
  width:38px;height:38px;flex:0 0 38px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(140deg,var(--brand),#8C63FF);
  color:#fff;font-size:19px;
  box-shadow:0 6px 18px rgba(109,59,255,.42);
}
.logo-text{
  font-size:15px;font-weight:700;line-height:1.35;letter-spacing:.2px;
  color:#fff;
}
.logo-text em{font-style:normal;color:var(--brand-light);display:block}
.sidebar-nav{display:flex;flex-direction:column;gap:6px;flex:1 1 auto}
.nav-item{
  display:flex;align-items:center;gap:11px;
  height:44px;padding:0 14px;
  border-radius:10px;
  color:#B6B0D0;
  font-size:14.5px;
  font-weight:500;
  position:relative;
  transition:background var(--ease),color var(--ease);
}
.nav-item i{font-size:18px;line-height:1;color:inherit}
.nav-item:hover{background:rgba(109,59,255,.18);color:#fff}
.nav-item.active{
  background:rgba(109,59,255,.26);
  color:#fff;
  font-weight:600;
}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand-2);
}
.nav-group-title{
  font-size:12px;letter-spacing:1.2px;color:rgba(255,255,255,.42);
  padding:18px 14px 8px;font-weight:600;
}
.sidebar-card{
  margin-top:20px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-card);
  padding:16px;
}
.sidebar-card p{font-size:13px;color:#B6B0D0;line-height:1.7;margin-bottom:12px}
.sidebar-card .btn{width:100%}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{
  position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--ink);
  display:none;align-items:center;justify-content:space-between;
  padding:0 16px;z-index:1050;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-bar .logo-text{font-size:14px}
.mobile-bar .logo-mark{width:32px;height:32px;flex:0 0 32px;font-size:16px;border-radius:9px}
.hamburger{
  width:40px;height:40px;border:1px solid rgba(255,255,255,.18);
  background:transparent;border-radius:10px;color:#fff;font-size:19px;
  display:grid;place-items:center;
}
.hamburger:hover{background:rgba(109,59,255,.28)}

/* 抽屉 */
.offcanvas.offcanvas-mine{
  background:var(--ink);color:#fff;width:84vw;max-width:340px;
  border:0;
}
.offcanvas-mine .offcanvas-header{
  padding:20px 18px;border-bottom:1px solid rgba(255,255,255,.10);
}
.offcanvas-mine .offcanvas-body{padding:16px 18px 26px}
.btn-close-white-x{
  width:36px;height:36px;border-radius:10px;
  background:rgba(255,255,255,.08);color:#fff;border:0;
  display:grid;place-items:center;font-size:17px;
}

/* ---------- 按钮 ---------- */
.btn{transition:all var(--ease);border-radius:var(--r-btn);font-weight:600}
.btn:focus-visible{box-shadow:0 0 0 3px rgba(34,211,184,.45)}
.btn-brand{
  background:var(--brand);border:1px solid var(--brand);color:#fff;
  padding:0 26px;height:46px;display:inline-flex;align-items:center;gap:8px;
  justify-content:center;
}
.btn-brand:hover{background:#5A2AE6;border-color:#5A2AE6;color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(109,59,255,.28)}
.btn-brand:active{transform:translateY(0);box-shadow:none}
.btn-outline-x{
  background:transparent;border:1px solid rgba(109,59,255,.55);color:var(--brand);
  padding:0 24px;height:46px;display:inline-flex;align-items:center;gap:8px;
  justify-content:center;
}
.btn-outline-x:hover{background:rgba(109,59,255,.08);color:var(--brand);transform:translateY(-1px)}
.btn-outline-light-x{
  background:transparent;border:1px solid rgba(255,255,255,.34);color:#fff;
  padding:0 24px;height:46px;display:inline-flex;align-items:center;gap:8px;
  justify-content:center;
}
.btn-outline-light-x:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px)}
.btn-soft{
  background:var(--soft);border:1px solid var(--line);color:var(--text);
  padding:0 20px;height:44px;display:inline-flex;align-items:center;gap:8px;
  justify-content:center;
}
.btn-soft:hover{background:#E8E4DC;color:var(--text)}
.btn-sm-x{height:38px;font-size:14px;padding:0 18px}
.btn-block-x{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.link-arrow i{transition:transform var(--ease)}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 徽章 / 标签 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 11px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1;
  background:rgba(109,59,255,.09);color:var(--brand);
}
.badge-mint{background:rgba(34,211,184,.14);color:#0F9C88}
.badge-warm{background:rgba(255,138,61,.14);color:#D9722C}
.tag-line{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:var(--ink);
  color:#fff;
  border-radius:0 0 var(--r-lg) var(--r-lg);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.5;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;
  align-items:center;
  padding:82px 0 74px;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  background:rgba(109,59,255,.24);
  border:1px solid rgba(169,139,255,.34);
  font-size:13px;color:#D9CFFF;font-weight:500;
}
.hero h1{
  font-size:40px;line-height:1.25;font-weight:700;
  margin:20px 0 18px;letter-spacing:.3px;
}
.hero h1 mark{
  background:none;color:var(--brand-light);
  padding-bottom:2px;
  border-bottom:3px solid rgba(34,211,184,.6);
}
.hero-sub{
  font-size:18px;line-height:1.7;color:#C8C2E4;max-width:520px;
}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-facts{
  display:flex;gap:26px;margin-top:34px;flex-wrap:wrap;
  padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
}
.hero-fact{display:flex;align-items:center;gap:9px;font-size:14px;color:#B6B0D0}
.hero-fact i{color:var(--brand-2);font-size:17px}
.hero-visual{position:relative}
.hero-visual .frame{
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  aspect-ratio:16/10;background:#221B45;
  box-shadow:0 24px 60px rgba(0,0,0,.42);
}
.hero-visual .frame img{width:100%;height:100%;object-fit:cover}
.float-card{
  position:absolute;
  background:#fff;color:var(--text);
  border-radius:var(--r-card);
  padding:14px 16px;
  box-shadow:0 14px 34px rgba(0,0,0,.26);
  min-width:158px;
}
.float-card .fc-num{
  font-size:22px;font-weight:800;line-height:1.2;color:var(--brand);
  font-variant-numeric:tabular-nums;
}
.float-card .fc-label{font-size:12.5px;color:var(--muted);margin-top:2px}
.float-card.fc-1{left:-22px;bottom:36px}
.float-card.fc-2{right:-18px;top:34px}
.float-card.fc-2 .fc-num{color:#0F9C88}

/* ---------- 指标看板 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.stat-card:hover{border-color:rgba(34,211,184,.75);box-shadow:var(--shadow-hover)}
.stat-value{
  font-size:42px;font-weight:800;line-height:1.1;
  font-variant-numeric:tabular-nums;color:var(--accent);
}
.stat-value small{font-size:16px;font-weight:700;color:var(--muted);margin-left:6px}
.stat-label{font-size:14px;font-weight:600;margin-top:10px}
.stat-foot{
  font-size:12px;color:var(--muted);
  margin-top:14px;padding-top:12px;
  border-top:1px dashed var(--line);
}

/* ---------- Bento 服务矩阵 ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.bento-item{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-card);
  display:flex;gap:20px;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  overflow:hidden;
}
.bento-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(109,59,255,.35)}
.bento-lg{grid-column:span 6;min-height:206px;background:linear-gradient(140deg,#F4F1FF 0%,#FFFFFF 62%)}
.bento-sm{grid-column:span 3;min-height:170px;flex-direction:column;gap:14px;padding:22px}
.bento-copy{flex:1 1 auto;min-width:0}
.bento-item h3{font-size:20px;font-weight:700;line-height:1.4;margin-bottom:10px}
.bento-sm h3{font-size:17px;font-weight:600;margin-bottom:6px}
.bento-item p{font-size:14px;line-height:1.7;color:var(--muted)}
.bento-thumb{
  flex:0 0 172px;border-radius:var(--r-img);overflow:hidden;
  aspect-ratio:4/3;background:var(--soft);
}
.bento-thumb img{width:100%;height:100%;object-fit:cover}
.icon-tile{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;font-size:19px;
  background:rgba(109,59,255,.12);color:var(--brand);
}
.icon-tile.mint{background:rgba(34,211,184,.16);color:#0F9C88}
.bento-arrow{margin-top:auto;color:var(--brand);font-size:16px;transition:transform var(--ease)}
.bento-item:hover .bento-arrow{transform:translateX(4px)}
.bento-lg .link-arrow{margin-top:14px}

/* ---------- 对比区 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.compare-panel{
  border-radius:var(--r-card);
  padding:28px;
  border:1px solid var(--line);
}
.compare-panel.before{background:var(--soft);border-color:#E0DBD2}
.compare-panel.after{background:rgba(109,59,255,.06);border-left:4px solid var(--brand);border-color:rgba(109,59,255,.22)}
.compare-panel h3{font-size:18px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:9px}
.compare-panel.before h3{color:var(--muted)}
.compare-panel.after h3{color:var(--brand)}
.compare-list li{
  display:flex;gap:11px;align-items:flex-start;
  font-size:14.5px;line-height:1.75;color:var(--text);
  padding:9px 0;
}
.compare-list li + li{border-top:1px dashed rgba(22,18,43,.08)}
.compare-list i{font-size:15px;margin-top:5px;flex:0 0 auto}
.compare-panel.before .compare-list i{color:#9C97AE}
.compare-panel.after .compare-list i{color:#0F9C88}
.compare-foot{font-size:13px;color:var(--muted);margin-top:18px}

/* ---------- 资讯列表 ---------- */
.post-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  height:100%;
  display:flex;flex-direction:column;
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(109,59,255,.32)}
.post-cover{
  display:block;aspect-ratio:16/9;overflow:hidden;background:var(--soft);
}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease}
.post-card:hover .post-cover img{transform:scale(1.04)}
.post-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.post-title{
  font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:51px;
}
.post-title a:hover{color:var(--brand)}
.post-excerpt{
  font-size:14px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}
.post-meta .date{display:inline-flex;align-items:center;gap:6px}
.empty-state{
  min-height:120px;
  background:var(--soft);
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;padding:26px;
}
.empty-state i{font-size:26px;color:#A29CB4}
.empty-state p{font-size:15px;color:var(--muted)}

/* ---------- 适用人群 / 证据 ---------- */
.audience-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.audience-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease);
}
.audience-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.audience-card h3{font-size:17px;font-weight:600;margin:14px 0 8px}
.audience-card p{font-size:14px;color:var(--muted);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px}
.accordion-x .accordion-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.accordion-x .accordion-item:hover{border-color:rgba(109,59,255,.32)}
.accordion-x .accordion-button{
  min-height:56px;padding:14px 22px;
  font-size:15px;font-weight:600;color:var(--text);
  background:transparent;box-shadow:none;
  display:flex;align-items:center;gap:14px;
}
.accordion-x .accordion-button::after{display:none}
.accordion-x .faq-icon{
  margin-left:auto;font-size:18px;color:var(--brand);
  transition:transform 180ms ease;flex:0 0 auto;
}
.accordion-x .accordion-button:not(.collapsed) .faq-icon{transform:rotate(45deg)}
.accordion-x .accordion-button:not(.collapsed){color:var(--brand);background:rgba(109,59,255,.04)}
.accordion-x .accordion-button:focus{box-shadow:none;border-color:transparent}
.accordion-x .accordion-body{
  font-size:15px;line-height:1.85;color:var(--muted);
  padding:4px 22px 22px 22px;
}
.accordion-x .accordion-body p{
  border-left:2px solid var(--brand);
  padding-left:16px;
}

/* ---------- 表单 ---------- */
.contact-sec{
  background:var(--card);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.contact-left h2{font-size:28px;font-weight:700;line-height:1.35}
.contact-left p{font-size:15px;color:var(--muted);margin-top:14px;line-height:1.8}
.contact-points{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.contact-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px}
.contact-points i{color:#0F9C88;font-size:16px;margin-top:5px}
.form-card{
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--shadow-card);
}
.form-label-x{
  display:block;font-size:14px;font-weight:600;margin-bottom:8px;
}
.form-label-x .req{color:var(--accent)}
.form-control-x{
  width:100%;height:46px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--text);
  transition:border-color var(--ease),box-shadow var(--ease);
}
textarea.form-control-x{height:auto;padding:12px 14px;line-height:1.7;resize:vertical}
select.form-control-x{appearance:none;background-image:none}
.form-control-x::placeholder{color:#A29CB4}
.form-control-x:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(109,59,255,.18);
}
.form-control-x.is-invalid{border-color:var(--danger);box-shadow:0 0 0 3px rgba(229,72,77,.14)}
.form-err{font-size:12px;color:var(--danger);margin-top:6px;display:none}
.form-err.show{display:block}
.form-hint{font-size:12px;color:var(--muted);margin-top:14px;line-height:1.7}
.form-ok{
  display:none;margin-top:16px;padding:12px 16px;border-radius:var(--r-btn);
  background:rgba(34,211,184,.12);color:#0E8C7A;font-size:14px;
}
.form-ok.show{display:block}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);color:#fff;
  padding:64px 0 32px;
  margin-top:auto;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;
}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:18px;color:#fff}
.footer-col p{font-size:14px;color:#B6B0D0;line-height:1.8}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:#B6B0D0;display:inline-flex;gap:8px;align-items:center}
.footer-links a:hover{color:#fff;transform:translateX(-2px)}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social span{
  width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
  background:rgba(255,255,255,.08);color:#B6B0D0;
  transition:background var(--ease),color var(--ease);
}
.footer-social span:hover{background:rgba(109,59,255,.35);color:#fff}
.footer-divider{height:1px;background:rgba(255,255,255,.10);margin:44px 0 20px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8E88AB;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sidebar-w:208px}
  .container-x{padding:0 24px}
  .hero h1{font-size:34px}
  .hero-inner{gap:36px;padding:66px 0 60px}
  .bento-lg{grid-column:span 12}
  .bento-sm{grid-column:span 6}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:991px){
  .sidebar{display:none}
  .mobile-bar{display:flex}
  .main-area{margin-left:0;padding-top:56px}
  .hero{border-radius:0}
  .hero-inner{grid-template-columns:1fr;padding:44px 0 48px}
  .hero h1{font-size:30px;margin:16px 0 14px}
  .hero-sub{font-size:16px;max-width:none}
  .hero-visual{margin-top:8px}
  .float-card{display:none}
  .hero-facts{gap:18px;margin-top:26px;padding-top:20px}
  .section{padding:64px 0}
  .section-title{font-size:24px}
  .compare{grid-template-columns:1fr}
  .audience-grid{grid-template-columns:1fr 1fr}
  .bento-thumb{flex:0 0 132px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container-x{padding:0 16px}
  .section{padding:48px 0}
  .section-title{font-size:22px}
  .hero h1{font-size:27px}
  .hero-cta{gap:12px;margin-top:24px}
  .hero-cta .btn{width:100%}
  .stat-grid{grid-template-columns:1fr 1fr;gap:14px}
  .stat-card{padding:18px}
  .stat-value{font-size:32px}
  .bento-sm{grid-column:span 12}
  .bento-item{flex-direction:column;gap:16px;padding:20px}
  .bento-thumb{flex:none;width:100%;aspect-ratio:16/9}
  .audience-grid{grid-template-columns:1fr}
  .form-card{padding:22px}
  .contact-left h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr}
  .footer-divider{margin:32px 0 18px}
}
@media (max-width:479px){
  .hero-facts{flex-direction:column;gap:12px}
  .stat-grid{grid-template-columns:1fr}
  .btn-brand,.btn-outline-x,.btn-outline-light-x{width:100%}
  .post-meta{flex-direction:column;align-items:flex-start;gap:8px}
  .form-card{padding:18px}
}

/* roulang page: article */
:root{
  --bg:#F7F5F2;
  --ink:#16122B;
  --brand:#6D3BFF;
  --brand-2:#22D3B8;
  --accent:#FF8A3D;
  --text:#2A2735;
  --muted:#6B6879;
  --line:#E6E2DA;
  --card:#FFFFFF;
  --soft:#F0EDE8;
  --danger:#E5484D;
  --sidebar-w:240px;
  --container:1240px;
  --r-card:16px;
  --r-block:20px;
  --r-btn:10px;
  --shadow-sm:0 1px 2px rgba(22,18,43,.04),0 8px 24px rgba(22,18,43,.06);
  --shadow-lg:0 12px 32px rgba(22,18,43,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease;}
a:hover{color:var(--accent);}
img{max-width:100%;display:block;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;}
::selection{background:rgba(109,59,255,.18);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-thumb{background:#D6D1C8;border-radius:99px;}
::-webkit-scrollbar-thumb:hover{background:#BEB8AC;}

.container-x{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.shell{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
main{flex:1 0 auto;}

/* ---------- 顶部移动栏 ---------- */
.mobile-topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  z-index:1040;
  background:var(--ink);
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-topbar .logo-text{color:#fff;font-size:15px;}
.hamburger{
  width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.18);
  background:transparent;
  color:#fff;
  border-radius:10px;
  font-size:20px;
  cursor:pointer;
  transition:background-color .2s ease,border-color .2s ease;
}
.hamburger:hover{background:rgba(109,59,255,.30);border-color:rgba(109,59,255,.6);}

/* ---------- 左侧导航 ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--ink);
  z-index:1035;
  overflow-y:auto;
  display:flex;
  flex-direction:column;
  border-right:1px solid rgba(255,255,255,.06);
}
.sidebar-inner{
  padding:24px 16px 28px;
  display:flex;
  flex-direction:column;
  min-height:100%;
}
.sidebar-logo{
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 8px 20px;
  border-bottom:1px solid rgba(255,255,255,.10);
  margin-bottom:18px;
}
.logo-mark{
  width:38px;height:38px;
  flex:0 0 38px;
  border-radius:11px;
  background:linear-gradient(140deg,var(--brand),#8B63FF);
  color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:19px;
  box-shadow:0 6px 16px rgba(109,59,255,.35);
}
.logo-text{
  color:#fff;
  font-size:16px;
  font-weight:700;
  letter-spacing:.2px;
  line-height:1.3;
}
.logo-text em{
  font-style:normal;
  color:var(--brand-2);
}
.sidebar .logo-text{color:#fff;font-size:15px;}
.sidebar-nav{display:flex;flex-direction:column;gap:4px;}
.nav-group-title{
  font-size:12px;
  letter-spacing:.08em;
  color:#7E789B;
  padding:18px 16px 8px;
}
.nav-item{
  display:flex;
  align-items:center;
  gap:12px;
  height:44px;
  padding:0 16px;
  border-radius:10px;
  color:#B6B0D0;
  font-size:14.5px;
  position:relative;
  transition:background-color .2s ease,color .2s ease;
}
.nav-item i{font-size:19px;line-height:1;color:inherit;}
.nav-item:hover{background:rgba(109,59,255,.18);color:#fff;}
.nav-item.active{
  background:rgba(109,59,255,.26);
  color:#fff;
  font-weight:600;
}
.nav-item.active::before{
  content:"";
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand);
}
.sidebar-card{
  margin-top:auto;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
  border-radius:14px;
  padding:16px;
  color:#B6B0D0;
  font-size:13px;
  line-height:1.7;
}
.sidebar-card p{margin:0 0 12px;}
.btn-sidebar{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:100%;
  height:40px;
  border-radius:10px;
  background:var(--brand);
  color:#fff;
  font-size:14px;
  font-weight:600;
  transition:background-color .2s ease,transform .2s ease;
}
.btn-sidebar:hover{background:#5B2AE0;color:#fff;transform:translateY(-1px);}

/* ---------- 抽屉 ---------- */
.nav-drawer{
  width:84vw !important;
  max-width:340px;
  background:var(--ink) !important;
  color:#fff;
  border-right:none !important;
}
.nav-drawer .offcanvas-header{
  padding:16px 18px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.nav-drawer .offcanvas-title{color:#fff;font-size:15px;font-weight:600;}
.nav-drawer .btn-close{filter:invert(1) grayscale(1);opacity:.7;}
.nav-drawer .offcanvas-body{padding:16px;}
.nav-drawer .nav-item{height:46px;}

/* ---------- 文章头部 ---------- */
.article-head{
  padding:40px 0 32px;
  background:var(--card);
  border-bottom:1px solid var(--line);
}
.breadcrumb-x{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--muted);
  margin-bottom:18px;
}
.breadcrumb-x a{color:var(--muted);}
.breadcrumb-x a:hover{color:var(--brand);}
.breadcrumb-x .sep{color:#C4BFB4;}
.breadcrumb-x .here{color:var(--text);}
.article-head h1{
  font-size:32px;
  line-height:1.35;
  font-weight:700;
  margin:0 0 18px;
  max-width:900px;
  color:var(--ink);
  overflow-wrap:break-word;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--muted);
}
.badge-x{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  font-size:13px;
  background:rgba(109,59,255,.08);
  color:var(--brand);
  border:1px solid rgba(109,59,255,.20);
}
.badge-x.cyan{
  background:rgba(34,211,184,.12);
  color:#12907E;
  border-color:rgba(34,211,184,.32);
}
.meta-dot{color:#C4BFB4;}

/* ---------- 正文布局 ---------- */
.article-main{padding:56px 0 72px;}
.reading-layout{
  display:grid;
  grid-template-columns:minmax(0,760px) 240px;
  gap:48px;
  align-items:start;
}
.reading-main{min-width:0;}

.article-body{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-block);
  padding:40px 44px;
  box-shadow:var(--shadow-sm);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  overflow-wrap:break-word;
}
.article-body p{margin:0 0 1.5em;}
.article-body h2{
  font-size:22px;
  line-height:1.45;
  font-weight:700;
  color:var(--ink);
  margin:40px 0 16px;
  padding-left:12px;
  border-left:4px solid var(--brand);
  scroll-margin-top:90px;
}
.article-body h3{
  font-size:18px;
  font-weight:600;
  color:var(--ink);
  margin:28px 0 12px;
}
.article-body h4{font-size:16.5px;font-weight:600;color:var(--ink);margin:22px 0 10px;}
.article-body ul,.article-body ol{padding-left:1.5em;margin:0 0 1.5em;line-height:1.9;}
.article-body li{margin-bottom:8px;}
.article-body blockquote{
  margin:24px 0;
  padding:16px 20px;
  background:var(--soft);
  border-left:3px solid var(--brand-2);
  border-radius:0 12px 12px 0;
  color:var(--muted);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:10px 0;width:100%;height:auto;background:var(--soft);}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent);}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:22px 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--soft);font-weight:600;color:var(--ink);}
.article-body tbody tr:hover td{background:rgba(109,59,255,.05);}
.article-body code{
  background:var(--soft);
  padding:2px 6px;
  border-radius:6px;
  font-size:14.5px;
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}

/* 空态 */
.empty-state{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-block);
  padding:64px 32px;
  text-align:center;
  box-shadow:var(--shadow-sm);
}
.empty-state i{font-size:40px;color:#BDB7AB;}
.empty-state p{font-size:16px;color:var(--muted);margin:16px 0 22px;}

/* ---------- 目录 ---------- */
.toc-aside{min-width:0;}
.toc-card{
  position:sticky;
  top:32px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--shadow-sm);
}
.toc-card h3{
  font-size:14px;
  font-weight:700;
  color:var(--ink);
  margin:0 0 12px;
  display:flex;
  align-items:center;
  gap:8px;
}
.toc-card h3 i{color:var(--brand);font-size:16px;}
.toc-list{list-style:none;margin:0;padding:0;}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;
  padding:8px 10px;
  border-radius:8px;
  font-size:13.5px;
  line-height:1.6;
  color:var(--muted);
  border-left:2px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.toc-list a:hover{background:rgba(109,59,255,.07);color:var(--brand);}
.toc-list a.is-active{
  color:var(--brand);
  background:rgba(109,59,255,.09);
  border-left-color:var(--brand);
  font-weight:600;
}
.toc-back{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:14px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}
.toc-back:hover{color:var(--brand);}

/* ---------- 文末区块 ---------- */
.after-note{
  margin-top:28px;
  padding:18px 22px;
  background:var(--soft);
  border-radius:14px;
  font-size:13.5px;
  color:var(--muted);
  line-height:1.8;
}
.after-note strong{color:var(--text);}
.section-block{margin-top:48px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:20px;
}
.section-head h2{
  font-size:22px;
  font-weight:700;
  color:var(--ink);
  margin:0;
}
.section-head h2 .tick{
  display:inline-block;
  width:6px;height:18px;
  border-radius:4px;
  background:var(--brand);
  margin-right:10px;
  vertical-align:-2px;
}
.section-head .sub{font-size:13px;color:var(--muted);}

.link-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px;}
.link-item{
  display:flex;
  align-items:center;
  gap:16px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  padding:18px 22px;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.link-item:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(109,59,255,.35);
}
.link-item .num{
  flex:0 0 34px;
  width:34px;height:34px;
  border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(109,59,255,.09);
  color:var(--brand);
  font-size:14px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
}
.link-item .txt{flex:1;min-width:0;}
.link-item .txt h3{
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  margin:0 0 4px;
  line-height:1.5;
}
.link-item .txt p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.7;}
.link-item .arrow{color:#BDB7AB;font-size:18px;transition:transform .2s ease,color .2s ease;}
.link-item:hover .arrow{transform:translateX(3px);color:var(--brand);}

.end-actions{
  margin-top:40px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:18px;
}
.btn-outline-x{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:46px;
  padding:0 26px;
  border:1px solid var(--brand);
  border-radius:var(--r-btn);
  color:var(--brand);
  font-size:15px;
  font-weight:600;
  background:transparent;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-outline-x:hover{
  background:rgba(109,59,255,.08);
  color:var(--brand);
  transform:translateY(-1px);
  box-shadow:0 8px 20px rgba(109,59,255,.16);
}
.btn-primary-x{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 26px;
  border:none;
  border-radius:var(--r-btn);
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary-x:hover{
  background:#5B2AE0;
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(109,59,255,.30);
}
.btn-primary-x:active{transform:translateY(0);}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  color:var(--brand);
  border-bottom:1px solid rgba(109,59,255,.35);
  padding-bottom:2px;
}
.text-link:hover{color:var(--accent);border-bottom-color:rgba(255,138,61,.5);}

/* ---------- CTA 条 ---------- */
.cta-bar{
  background:var(--ink);
  border-radius:var(--r-block);
  padding:34px 36px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  color:#fff;
}
.cta-bar h2{
  font-size:21px;
  font-weight:700;
  margin:0 0 8px;
  color:#fff;
}
.cta-bar p{margin:0;font-size:14px;color:#B6B0D0;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:#B6B0D0;
  padding:64px 0 32px;
  margin-top:auto;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
}
.footer-col h4{
  font-size:15px;
  color:#fff;
  margin:0 0 18px;
  font-weight:700;
}
.footer-col p{
  font-size:14px;
  line-height:1.8;
  margin:0;
  color:#B6B0D0;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:#B6B0D0;
  transition:color .2s ease,transform .2s ease;
}
.footer-links a i{font-size:12px;color:#6F6890;}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social span{
  width:36px;height:36px;
  border-radius:10px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);
  display:inline-flex;align-items:center;justify-content:center;
  color:#B6B0D0;
  transition:background-color .2s ease,color .2s ease;
}
.footer-social span:hover{background:rgba(109,59,255,.30);color:#fff;}
.footer-divider{height:1px;background:rgba(255,255,255,.10);margin:40px 0 20px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:#8E88AB;
}
.site-footer .logo-text{color:#fff;font-size:16px;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sidebar-w:210px;}
  .container-x{padding:0 24px;}
  .reading-layout{grid-template-columns:minmax(0,1fr) 220px;gap:32px;}
  .article-body{padding:34px 30px;}
  .article-head h1{font-size:29px;}
}
@media (max-width:991.98px){
  .sidebar{display:none;}
  .mobile-topbar{display:flex;}
  .shell{margin-left:0;padding-top:56px;}
  .reading-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .toc-aside{display:none;}
  .container-x{padding:0 20px;}
  .article-main{padding:40px 0 56px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-bar{padding:28px 24px;}
}
@media (max-width:767.98px){
  .article-head{padding:28px 0 24px;}
  .article-head h1{font-size:25px;line-height:1.4;}
  .article-body{font-size:16px;line-height:1.85;padding:26px 20px;border-radius:16px;}
  .article-body h2{font-size:19px;margin:32px 0 14px;}
  .article-body h3{font-size:17px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .section-head h2{font-size:19px;}
  .link-item{padding:16px;gap:12px;}
  .end-actions{flex-direction:column;gap:12px;}
  .btn-outline-x,.btn-primary-x{width:100%;justify-content:center;}
  .cta-bar{flex-direction:column;align-items:flex-start;}
  .cta-bar h2{font-size:18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:479.98px){
  .container-x{padding:0 16px;}
  .article-head h1{font-size:22px;}
  .article-body{padding:22px 16px;}
  .badge-x{font-size:12px;}
}

/* roulang page: category1 */
/* ================= 设计变量 ================= */
:root{
  --bg:#F7F5F2;
  --ink:#16122B;
  --brand:#6D3BFF;
  --brand-2:#22D3B8;
  --accent:#FF8A3D;
  --text:#2A2735;
  --muted:#6B6879;
  --line:#E6E2DA;
  --card:#FFFFFF;
  --soft:#F0EDE8;
  --side-text:#B6B0D0;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(22,18,43,.04),0 8px 24px rgba(22,18,43,.06);
  --sh-2:0 12px 32px rgba(22,18,43,.10);
  --sidebar-w:240px;
  --ease:200ms ease;
}

/* ================= 基础重置 ================= */
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.2px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(109,59,255,.18);color:var(--text);}
.btn-close{--bs-btn-close-color:#fff;}

/* ================= 容器 ================= */
.container-x{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
}

/* ================= 左侧导航 ================= */
.app-sidebar{
  position:fixed;
  top:0;left:0;
  width:var(--sidebar-w);
  height:100vh;
  background:var(--ink);
  z-index:1040;
  overflow-y:auto;
  overscroll-behavior:contain;
}
.app-sidebar::-webkit-scrollbar{width:6px;}
.app-sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:999px;}
.sidebar-inner{
  display:flex;
  flex-direction:column;
  min-height:100%;
  padding:24px 16px 20px;
}
.sidebar-logo{
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 8px;
  margin-bottom:26px;
}
.logo-mark{
  width:34px;height:34px;
  flex:0 0 auto;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand),#8F6BFF);
  display:grid;place-items:center;
  color:#fff;font-size:17px;
}
.logo-text{
  font-size:15px;
  font-weight:700;
  color:#fff;
  line-height:1.3;
  letter-spacing:.2px;
}
.logo-text em{font-style:normal;color:var(--brand-2);}

.sidebar-nav{display:flex;flex-direction:column;gap:6px;}
.nav-group-title{
  margin:20px 0 6px;
  padding-left:16px;
  font-size:12px;
  letter-spacing:.12em;
  color:#7C76A0;
}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding-left:16px;
  border-radius:10px;
  font-size:15px;
  color:var(--side-text);
  transition:background var(--ease),color var(--ease);
}
.nav-item i{font-size:17px;line-height:1;width:20px;text-align:center;}
.nav-item:hover{background:rgba(109,59,255,.18);color:#fff;}
.nav-item.active{
  background:rgba(109,59,255,.26);
  color:#fff;
}
.nav-item.active::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:22px;
  border-radius:0 3px 3px 0;
  background:var(--brand);
}
.sidebar-card{
  margin-top:auto;
  background:rgba(109,59,255,.14);
  border:1px solid rgba(109,59,255,.30);
  border-radius:14px;
  padding:16px;
}
.sidebar-card p{
  font-size:13px;
  line-height:1.7;
  color:#CFC9E8;
  margin:0 0 12px;
}
.btn-brand-sm{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:36px;
  padding:0 16px;
  border-radius:var(--r-btn);
  background:var(--brand);
  color:#fff;
  font-size:13px;
  font-weight:600;
}
.btn-brand-sm:hover{background:#5C2CE6;color:#fff;}

/* ================= 主内容区 ================= */
.app-main{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  padding-top:32px;
  padding-bottom:8px;
}

/* ================= 移动端顶部栏与抽屉 ================= */
.mobile-topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:var(--ink);
  color:#fff;
  z-index:1035;
}
.mobile-topbar .logo-text{font-size:14px;}
.hamburger{
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.14);
  background:transparent;
  color:#fff;
  display:grid;place-items:center;
  font-size:20px;
  transition:background var(--ease);
}
.hamburger:hover{background:rgba(255,255,255,.08);}
.drawer{
  background:var(--ink)!important;
  color:#fff;
  width:84vw!important;
  max-width:320px;
  border-right:0!important;
}
.drawer .offcanvas-header{
  padding:18px 20px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.drawer .offcanvas-body{padding:18px 16px 24px;}
.drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.8);opacity:.8;}

/* ================= 面包屑与页头 ================= */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--muted);
  margin-bottom:22px;
}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C4BFB4;}

.page-head{padding:16px 0 0;}
.page-head h1{
  font-size:30px;
  line-height:1.35;
  margin-bottom:14px;
}
.page-head h1 span{color:var(--brand);}
.page-lead{
  font-size:14px;
  color:var(--muted);
  line-height:1.8;
  max-width:520px;
  margin-bottom:18px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  height:24px;
  display:inline-flex;
  align-items:center;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:13px;
  color:var(--brand);
  background:rgba(109,59,255,.08);
  border:1px solid rgba(109,59,255,.16);
}
.tag.is-green{color:#12897A;background:rgba(34,211,184,.12);border-color:rgba(34,211,184,.28);}
.head-figure{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-card);
  background:var(--soft);
}

/* ================= 板块 ================= */
.section{padding:52px 0 0;}
.section-head{margin-bottom:26px;}
.section-head h2{
  font-size:28px;
  line-height:1.35;
  margin-bottom:8px;
}
.section-head p{
  font-size:14px;
  color:var(--muted);
  margin:0;
  max-width:680px;
}

/* ================= 图文卡（左图右文） ================= */
.media-card{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:28px;
  align-items:center;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  margin-bottom:20px;
}
.media-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--sh-2);
  border-color:rgba(109,59,255,.34);
}
.media-card:last-child{margin-bottom:0;}
.media-figure{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:12px;
  background:var(--soft);
}
.media-body h3{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:10px;
}
.media-body p{
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
  margin-bottom:14px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
  border-bottom:1px solid rgba(109,59,255,.35);
  padding-bottom:2px;
}
.text-link i{transition:transform var(--ease);}
.text-link:hover{color:var(--accent);border-color:rgba(255,138,61,.5);}
.text-link:hover i{transform:translateX(3px);}

/* ================= 步骤卡 ================= */
.step-card{
  height:100%;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--sh-2);
  border-color:rgba(109,59,255,.34);
}
.step-num{
  width:44px;height:44px;
  border-radius:12px;
  background:var(--soft);
  color:var(--brand);
  display:grid;place-items:center;
  font-size:16px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--muted);line-height:1.7;margin:0;}

/* ================= 折叠说明 ================= */
.acc-group{max-width:860px;}
.acc-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.acc-item:hover{border-color:rgba(109,59,255,.30);}
.acc-btn{
  width:100%;
  min-height:56px;
  padding:0 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  background:transparent;
  border:0;
  font-size:15px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
}
.acc-btn:hover{color:var(--brand);}
.acc-btn .ico{
  flex:0 0 auto;
  font-size:18px;
  color:var(--brand);
  transition:transform 180ms ease;
  line-height:1;
}
.acc-btn[aria-expanded="true"] .ico{transform:rotate(45deg);}
.acc-body{
  padding:0 20px 20px 38px;
  border-left:2px solid var(--brand);
  margin-left:20px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}
.acc-body strong{color:var(--text);font-weight:600;}

/* ================= CTA 条 ================= */
.cta-bar{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  border-radius:var(--r-lg);
  padding:34px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-bar::after{
  content:"";
  position:absolute;
  right:-70px;top:-70px;
  width:220px;height:220px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(109,59,255,.45),transparent 70%);
}
.cta-bar h2{
  position:relative;
  z-index:1;
  color:#fff;
  font-size:22px;
  line-height:1.4;
  margin-bottom:8px;
}
.cta-bar p{
  position:relative;
  z-index:1;
  color:#B6B0D0;
  font-size:14px;
  margin:0;
}
.cta-bar .btn-brand{position:relative;z-index:1;}

/* ================= 按钮 ================= */
.btn-brand{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border:0;
  border-radius:var(--r-btn);
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:600;
  transition:transform var(--ease),background var(--ease),box-shadow var(--ease);
}
.btn-brand:hover{
  background:#5C2CE6;
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(109,59,255,.28);
}
.btn-brand:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border:1px solid rgba(109,59,255,.40);
  border-radius:var(--r-btn);
  background:transparent;
  color:var(--brand);
  font-size:15px;
  font-weight:600;
  transition:transform var(--ease),background var(--ease),color var(--ease);
}
.btn-ghost:hover{background:rgba(109,59,255,.08);transform:translateY(-1px);color:var(--brand);}
.btn-ghost:active{transform:translateY(0);}

/* ================= 页脚 ================= */
.site-footer{
  margin-top:88px;
  padding:64px 0 32px;
  background:var(--ink);
  color:#B6B0D0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
}
.footer-col h4{
  color:#fff;
  font-size:15px;
  margin-bottom:16px;
}
.footer-col p{font-size:14px;line-height:1.8;margin:0;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:#B6B0D0;
}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.footer-social{display:flex;gap:10px;margin-top:16px;}
.footer-social span{
  width:36px;height:36px;
  border-radius:10px;
  background:rgba(255,255,255,.06);
  display:grid;place-items:center;
  color:#B6B0D0;
  font-size:16px;
  transition:background var(--ease),color var(--ease);
}
.footer-social span:hover{background:rgba(109,59,255,.28);color:#fff;}
.footer-divider{height:1px;background:rgba(255,255,255,.10);margin:40px 0 22px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
}

/* ================= 响应式 ================= */
@media (max-width:1199.98px){
  :root{--sidebar-w:220px;}
  .container-x{padding:0 24px;}
  .page-head h1{font-size:28px;}
  .section-head h2{font-size:26px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  .app-sidebar{display:none;}
  .mobile-topbar{display:flex;}
  .app-main{margin-left:0;padding-top:56px;}
  .drawer .nav-item{height:48px;}
  .media-card{grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:20px;}
  .cta-bar{padding:28px 24px;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .container-x{padding:0 16px;}
  .app-main{padding-top:56px;}
  .page-head h1{font-size:24px;}
  .page-lead{max-width:100%;}
  .head-figure{aspect-ratio:16/9;margin-top:20px;}
  .section{padding:44px 0 0;}
  .section-head h2{font-size:22px;}
  .media-card{
    grid-template-columns:1fr;
    gap:16px;
    padding:18px;
  }
  .cta-bar{
    flex-direction:column;
    align-items:flex-start;
    padding:26px 20px;
  }
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-col:last-child{grid-column:auto;}
  .footer-bottom{flex-direction:column;}
  .acc-body{margin-left:16px;padding:0 16px 18px 30px;}
}
@media (max-width:520px){
  .page-head h1{font-size:22px;}
  .media-card{padding:16px;}
  .step-card{padding:18px;}
  .btn-brand,.btn-ghost{width:100%;}
  .cta-bar .btn-brand{width:100%;}
  .tag{font-size:12px;}
}

/* roulang page: category2 */
:root{
  --bg:#F7F5F2;
  --ink:#16122B;
  --ink-2:#221B44;
  --brand:#6D3BFF;
  --brand-2:#22D3B8;
  --accent:#FF8A3D;
  --text:#2A2735;
  --muted:#6B6879;
  --line:#E6E2DA;
  --card:#FFFFFF;
  --soft:#F0EDE8;
  --on-dark:#FFFFFF;
  --on-dark-2:#B6B0D0;
  --dark-line:rgba(255,255,255,.10);
  --r-card:16px;
  --r-block:20px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(22,18,43,.04), 0 8px 24px rgba(22,18,43,.06);
  --sh-2:0 12px 32px rgba(22,18,43,.10);
  --sidebar-w:240px;
  --t:200ms ease;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--accent)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
::selection{background:rgba(109,59,255,.22);color:var(--ink)}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#D5CFC6;border-radius:999px;border:2px solid var(--bg)}
::-webkit-scrollbar-track{background:transparent}

.container-x{max-width:1240px;margin:0 auto;padding:0 32px;width:100%}

/* ---------- 侧栏 App Shell ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--ink);
  padding:26px 16px 20px;
  display:flex;flex-direction:column;
  gap:22px;
  overflow-y:auto;
  z-index:1030;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--on-dark)}
.brand:hover{color:var(--on-dark)}
.logo-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--brand),#8E63FF);
  color:#fff;font-size:19px;
}
.logo-text{font-size:15px;font-weight:700;letter-spacing:.2px;line-height:1.25}
.logo-text em{font-style:normal;display:block;font-size:12px;font-weight:500;color:var(--brand-2);letter-spacing:1px}
.sidebar-nav{display:flex;flex-direction:column;gap:4px}
.nav-group-title{
  font-size:12px;color:#7C76A0;letter-spacing:1.4px;
  margin:16px 0 6px;padding-left:16px;
}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px 0 16px;border-radius:10px;
  color:var(--on-dark-2);font-size:14.5px;
  transition:background var(--t), color var(--t);
}
.nav-item i{font-size:18px;line-height:1;flex:0 0 18px}
.nav-item:hover{background:rgba(109,59,255,.18);color:#fff}
.nav-item.active{background:rgba(109,59,255,.26);color:#fff;font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:999px;background:var(--brand);
}
.side-note{
  margin-top:auto;
  background:var(--ink-2);
  border:1px solid var(--dark-line);
  border-radius:14px;padding:16px;
}
.side-note p{font-size:13px;line-height:1.65;color:var(--on-dark-2);margin-bottom:12px}
.btn-side{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  width:100%;height:38px;border-radius:9px;border:0;
  background:var(--brand);color:#fff;font-size:13.5px;font-weight:600;
  transition:background var(--t), transform var(--t);
}
.btn-side:hover{background:#5C2DEB;color:#fff;transform:translateY(-1px)}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;
  position:sticky;top:0;z-index:1040;
  height:56px;padding:0 16px;
  background:var(--ink);
  align-items:center;justify-content:space-between;
}
.topbar .logo-text{font-size:14px}
.topbar .logo-text em{display:inline;font-size:13px;letter-spacing:0;margin-left:2px}
.menu-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--dark-line);
  background:rgba(255,255,255,.04);color:#fff;font-size:20px;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background var(--t);
}
.menu-btn:hover{background:rgba(109,59,255,.28)}

/* 抽屉 */
.sidebar-drawer.offcanvas{background:var(--ink);color:#fff;width:84vw;max-width:330px;border:0}
.sidebar-drawer .offcanvas-header{padding:18px 16px 8px;border-bottom:1px solid var(--dark-line)}
.sidebar-drawer .offcanvas-body{padding:16px}
.close-x{
  width:36px;height:36px;border-radius:9px;border:1px solid var(--dark-line);
  background:transparent;color:#fff;font-size:16px;
  display:inline-flex;align-items:center;justify-content:center;
}
.close-x:hover{background:rgba(109,59,255,.28)}

/* ---------- 主区域 ---------- */
.app-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1 1 auto}

/* ---------- 页头 ---------- */
.page-head{padding:48px 0 8px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:22px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C3BDB2}
.crumb .cur{color:var(--text);font-weight:600}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  background:rgba(109,59,255,.09);color:var(--brand);
  font-size:13px;font-weight:600;margin-bottom:16px;
}
.page-head h1{
  font-size:30px;line-height:1.4;font-weight:700;letter-spacing:-.2px;
  margin-bottom:14px;color:var(--ink);
}
.page-head h1 span{color:var(--brand)}
.page-lead{font-size:15px;color:var(--muted);line-height:1.8;max-width:640px}
.page-head .head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.head-figure{
  border-radius:var(--r-card);overflow:hidden;background:var(--soft);
  aspect-ratio:16/9;box-shadow:var(--sh-1);
}
.head-figure img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-img)}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform var(--t), box-shadow var(--t), background var(--t), color var(--t);
}
.btn-brand{background:var(--brand);color:#fff;border:1px solid var(--brand)}
.btn-brand:hover{background:#5C2DEB;color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(109,59,255,.28)}
.btn-brand:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--brand);border:1px solid rgba(109,59,255,.45)}
.btn-ghost:hover{background:rgba(109,59,255,.08);color:var(--brand);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-brand:focus-visible,.btn-ghost:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
.section-head h2{font-size:26px;line-height:1.4;font-weight:700;color:var(--ink);letter-spacing:-.2px}
.section-head .sub{font-size:14px;color:var(--muted);margin-top:8px}
.link-more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.link-more i{transition:transform var(--t)}
.link-more:hover i{transform:translateX(3px)}

/* ---------- 分组清单 ---------- */
.group-list{display:flex;flex-direction:column;gap:22px}
.group{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
}
.group-head{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.group-no{
  flex:0 0 44px;width:44px;height:44px;border-radius:13px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(34,211,184,.14);color:#12907C;
  font-size:15px;font-weight:800;letter-spacing:.5px;
}
.group-head h3{font-size:17.5px;font-weight:700;color:var(--ink);line-height:1.5}
.item-list{border-top:1px solid var(--line)}
.item{
  display:flex;align-items:center;gap:14px;
  min-height:56px;padding:10px 12px;border-radius:10px;
  border-bottom:1px solid var(--line);
  transition:background var(--t);
}
.item:last-child{border-bottom:0}
.item:hover{background:var(--soft)}
.item i{font-size:18px;color:var(--brand);flex:0 0 20px}
.item .it-t{font-size:15px;font-weight:600;color:var(--ink)}
.item .it-d{font-size:13.5px;color:var(--muted);line-height:1.6}

/* ---------- 粘性信息卡 ---------- */
.sticky-card{
  position:sticky;top:32px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-block);
  padding:26px;box-shadow:var(--sh-1);
}
.sticky-card h3{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:10px}
.sticky-card .lead-sm{font-size:14px;color:var(--muted);line-height:1.75;margin-bottom:18px}
.check-list{display:flex;flex-direction:column;gap:12px;margin-bottom:22px}
.check-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--text)}
.check-list i{color:var(--brand-2);font-size:16px;line-height:1.6;flex:0 0 16px}
.sticky-card .btn-brand{width:100%}
.card-note{font-size:12.5px;color:var(--muted);line-height:1.65;margin-top:14px}

/* ---------- 图文条 ---------- */
.feature-row{
  display:grid;grid-template-columns:5fr 7fr;gap:24px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform var(--t), box-shadow var(--t);
}
.feature-row + .feature-row{margin-top:20px}
.feature-row:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.feature-row figure{aspect-ratio:16/9;border-radius:var(--r-img);overflow:hidden;background:var(--soft);margin:0}
.feature-row figure img{width:100%;height:100%;object-fit:cover}
.feature-row h3{font-size:19px;font-weight:700;color:var(--ink);margin-bottom:10px}
.feature-row p{font-size:14.5px;color:var(--muted);line-height:1.8}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
  height:24px;display:inline-flex;align-items:center;padding:0 11px;border-radius:999px;
  background:rgba(34,211,184,.12);color:#0F8571;font-size:12.5px;font-weight:600;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.accordion.faq-acc{--bs-accordion-bg:transparent;--bs-accordion-border-width:0}
.faq-acc .accordion-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;margin-bottom:12px;box-shadow:var(--sh-1);
  transition:border-color var(--t);
}
.faq-acc .accordion-item:hover{border-color:rgba(109,59,255,.3)}
.faq-acc .accordion-button{
  background:transparent;color:var(--ink);font-size:15.5px;font-weight:600;
  padding:18px 22px;box-shadow:none;line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:transparent}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-acc .accordion-button::after{
  background-image:none;content:"\F4FE";font-family:"bootstrap-icons";
  font-size:16px;color:var(--brand);width:auto;height:auto;
  transform:none;transition:transform var(--t);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--accent)}
.faq-acc .accordion-body{
  padding:0 22px 20px 38px;font-size:15px;line-height:1.85;color:var(--muted);
  border-left:2px solid rgba(109,59,255,.35);margin-left:22px;padding-left:16px;
}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--ink);border-radius:var(--r-block);
  padding:36px 34px;color:#fff;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.cta-band h2{font-size:22px;font-weight:700;line-height:1.5;color:#fff;max-width:620px}
.cta-band p{font-size:14px;color:var(--on-dark-2);margin-top:10px;max-width:620px;line-height:1.75}
.cta-band .btn-brand{flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--on-dark-2);margin-top:72px;padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:0}
.footer-col{padding:0 26px;border-left:1px solid var(--dark-line)}
.footer-col:first-child{border-left:0;padding-left:0}
.footer-col:last-child{padding-right:0}
.footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px}
.footer-col p{font-size:13.5px;line-height:1.8}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  font-size:14px;color:var(--on-dark-2);display:inline-flex;align-items:center;gap:8px;
  transition:color var(--t), transform var(--t);
}
.footer-links a i{font-size:12px;color:var(--brand)}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social span{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--dark-line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--on-dark-2);
  transition:background var(--t), color var(--t);
}
.footer-social span:hover{background:rgba(109,59,255,.28);color:#fff}
.footer-divider{height:1px;background:var(--dark-line);margin:40px 0 22px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#8E88AB;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sidebar-w:220px}
  .page-head h1{font-size:27px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 0}
  .footer-col{padding:0 20px}
  .footer-col:nth-child(odd){border-left:0;padding-left:0}
}
@media (max-width:991.98px){
  .sidebar{display:none}
  .topbar{display:flex}
  .app-main{margin-left:0}
  .container-x{padding:0 24px}
  .page-head{padding:36px 0 4px}
  .section{padding:56px 0 0}
  .section-head h2{font-size:23px}
  .sticky-card{position:static;margin-top:22px}
  .feature-row{grid-template-columns:1fr;gap:18px}
  .site-footer{padding:52px 0 26px;margin-top:56px}
}
@media (max-width:767.98px){
  body{font-size:15.5px;line-height:1.8}
  .container-x{padding:0 16px}
  .page-head h1{font-size:24px}
  .page-lead{font-size:14.5px}
  .head-actions .btn-brand,.head-actions .btn-ghost{flex:1 1 100%}
  .section{padding:48px 0 0}
  .section-head h2{font-size:21px}
  .group{padding:18px}
  .group-head h3{font-size:16px}
  .item{align-items:flex-start;padding:12px 10px}
  .item i{margin-top:2px}
  .cta-band{padding:26px 20px}
  .cta-band h2{font-size:19px}
  .cta-band .btn-brand{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-col{border-left:0;padding:0}
  .footer-col + .footer-col{margin-top:26px}
  .faq-acc .accordion-body{padding-left:14px;margin-left:12px}
}
@media (max-width:479.98px){
  .page-head h1{font-size:22px}
  .badge-soft{font-size:12.5px}
  .btn-brand,.btn-ghost{width:100%}
  .footer-bottom{flex-direction:column}
}