/* roulang page: index */
:root{
  --bg-base:#070B14;
  --bg-elev:#0E1526;
  --bg-elev2:#131C33;
  --glass:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.10);
  --txt:#E8EEF7;
  --txt-2:#9AA7BD;
  --accent:#2FE3C8;
  --promo:#FF7A45;
  --ok:#5BD68A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 12px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(47,227,200,.35),0 8px 28px rgba(47,227,200,.22);
  --sidebar-w:248px;
  --sidebar-w-sm:76px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background-color:var(--bg-base);
  color:var(--txt);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:-0.005em;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:24px 24px;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,opacity .2s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{font-weight:800;letter-spacing:-0.01em;line-height:1.35;margin:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(47,227,200,.30);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#080D18;}
::-webkit-scrollbar-thumb{background:rgba(47,227,200,.30);border-radius:999px;border:2px solid #080D18;}
::-webkit-scrollbar-thumb:hover{background:rgba(47,227,200,.55);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.mono{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-weight:600;letter-spacing:.02em;}

/* ============ 布局 ============ */
.layout{display:flex;min-height:100vh;}
.main-area{margin-left:var(--sidebar-w);width:calc(100% - var(--sidebar-w));min-width:0;}
.container{max-width:1240px;margin:0 auto;padding:0 24px;width:100%;}
.section{padding:88px 0;}
.section-tight{padding:72px 0;}

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:linear-gradient(180deg,#0B1220 0%,#080E1B 100%);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:22px 16px 20px;
  z-index:60;
}
.brand{display:flex;align-items:center;gap:12px;padding:6px 8px 20px;border-bottom:1px solid var(--line);}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(47,227,200,.22),rgba(47,227,200,.05));
  border:1px solid rgba(47,227,200,.40);
  color:var(--accent);font-weight:800;font-size:15px;letter-spacing:.02em;
  box-shadow:0 6px 18px rgba(47,227,200,.14);
}
.brand-text{min-width:0;}
.brand-name{font-size:16px;font-weight:800;color:#fff;white-space:nowrap;}
.brand-sub{font-size:11px;color:var(--txt-2);white-space:nowrap;letter-spacing:.06em;}
.side-nav{margin-top:22px;display:flex;flex-direction:column;gap:6px;flex:1;overflow-y:auto;}
.side-label{font-size:11px;color:var(--txt-2);letter-spacing:.14em;padding:6px 12px 8px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 14px;border-radius:10px;
  color:var(--txt-2);font-size:14.5px;font-weight:500;
  border:1px solid transparent;
}
.nav-item svg{flex:0 0 18px;width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.nav-item:hover{color:var(--txt);background:var(--glass);border-color:var(--line);}
.nav-item.active{
  color:#fff;background:var(--glass);border-color:rgba(47,227,200,.28);
}
.nav-item.active::before{
  content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--accent);
  box-shadow:0 0 12px rgba(47,227,200,.7);
}
.nav-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.side-cta{
  margin-top:16px;padding:16px;border-radius:14px;
  background:linear-gradient(160deg,rgba(47,227,200,.12),rgba(255,255,255,.03));
  border:1px solid rgba(47,227,200,.24);
}
.side-cta p{font-size:12.5px;color:var(--txt-2);line-height:1.7;margin-bottom:10px;}
.side-cta .side-cta-title{color:#fff;font-size:13.5px;font-weight:700;margin-bottom:6px;}
.btn-mini{
  display:block;text-align:center;padding:9px 10px;border-radius:9px;
  background:var(--accent);color:#052F2A;font-size:13px;font-weight:700;
  box-shadow:var(--glow);transition:transform .18s ease,filter .18s ease;
}
.btn-mini:hover{filter:brightness(1.08);transform:translateY(-1px);}
.btn-mini:active{transform:translateY(0);}

/* 移动端顶栏与抽屉 */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(8,14,27,.92);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.topbar .brand{padding:0;border:none;gap:10px;}
.topbar .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:13px;border-radius:10px;}
.topbar .brand-name{font-size:15px;}
.topbar .brand-sub{font-size:10px;}
.drawer-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--glass);display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-btn svg{width:20px;height:20px;stroke:var(--txt);stroke-width:1.9;fill:none;stroke-linecap:round;}
.overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.overlay.show{opacity:1;visibility:visible;}
.drawer-close{
  margin-left:auto;width:32px;height:32px;border-radius:9px;border:1px solid var(--line);
  background:var(--glass);display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-close svg{width:16px;height:16px;stroke:var(--txt);stroke-width:2;fill:none;stroke-linecap:round;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,filter .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--accent);color:#052F2A;box-shadow:var(--glow);}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,227,200,.5),0 12px 34px rgba(47,227,200,.3);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--txt);backdrop-filter:blur(8px);}
.btn-ghost:hover{border-color:rgba(47,227,200,.42);color:var(--accent);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-block{width:100%;}

/* ============ 通用组件 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:12.5px;letter-spacing:.08em;
  color:var(--accent);background:rgba(47,227,200,.09);border:1px solid rgba(47,227,200,.24);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-title{font-size:clamp(24px,3vw,34px);margin-top:16px;color:#fff;}
.section-desc{margin-top:14px;color:var(--txt-2);font-size:15.5px;line-height:1.85;}
.card{
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:24px;backdrop-filter:blur(10px);
  transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.card:hover{border-color:rgba(47,227,200,.40);transform:translateY(-3px);box-shadow:0 18px 46px rgba(0,0,0,.5);}
.badge{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:rgba(47,227,200,.10);color:var(--accent);border:1px solid rgba(47,227,200,.26);
}
.badge-promo{background:rgba(255,122,69,.12);color:var(--promo);border-color:rgba(255,122,69,.34);}
.divider{height:1px;background:var(--line);border:none;margin:0;}

/* ============ Hero ============ */
.hero{position:relative;padding:96px 0 80px;overflow:hidden;}
.hero::after{
  content:"";position:absolute;top:-160px;left:38%;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,227,200,.16),transparent 68%);
  pointer-events:none;filter:blur(6px);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero h1{font-size:clamp(30px,4.2vw,48px);margin-top:20px;color:#fff;}
.hero h1 span{color:var(--accent);}
.hero-sub{margin-top:18px;font-size:16.5px;color:var(--txt-2);line-height:1.85;max-width:560px;}
.hero-actions{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap;}
.hero-pills{margin-top:34px;display:flex;gap:12px;flex-wrap:wrap;}
.pill{
  display:flex;flex-direction:column;gap:2px;padding:12px 18px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);min-width:118px;
}
.pill-num{font-size:19px;color:var(--accent);}
.pill-label{font-size:12px;color:var(--txt-2);}
.hero-visual{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid rgba(47,227,200,.28);box-shadow:0 24px 60px rgba(0,0,0,.55);}
.hero-visual img{width:100%;height:420px;object-fit:cover;border-radius:0;}
.hero-visual::after{content:"";position:absolute;inset:auto 0 0 0;height:55%;background:linear-gradient(to top,rgba(7,11,20,.94),transparent);}
.hero-visual-tag{
  position:absolute;left:20px;bottom:20px;z-index:3;
  padding:10px 16px;border-radius:999px;background:rgba(7,11,20,.7);
  border:1px solid rgba(47,227,200,.34);font-size:13px;color:var(--txt);backdrop-filter:blur(8px);
}

/* ============ 信任条 ============ */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.trust-item{padding:20px 22px;border-radius:12px;background:var(--glass);border:1px solid var(--line);}
.trust-item strong{display:block;font-size:22px;color:var(--accent);}
.trust-item span{display:block;margin-top:6px;font-size:13.5px;color:var(--txt-2);}

/* ============ 优惠阶梯 ============ */
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:end;}
.tier{
  position:relative;border-radius:var(--radius-card);padding:26px 24px;
  background:linear-gradient(165deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  border:1px solid rgba(255,255,255,.08);box-shadow:var(--shadow-card);
  transition:border-color .22s ease,transform .22s ease;
}
.tier:hover{border-color:rgba(47,227,200,.4);}
.tier-1{min-height:210px;}
.tier-2{min-height:250px;background:linear-gradient(165deg,rgba(47,227,200,.10),rgba(255,255,255,.02));}
.tier-3{min-height:290px;background:linear-gradient(165deg,rgba(47,227,200,.16),rgba(255,255,255,.03));border-color:rgba(47,227,200,.34);}
.tier-name{font-size:16px;font-weight:700;color:#fff;}
.tier-rate{margin-top:14px;font-size:34px;color:var(--promo);line-height:1.1;}
.tier-rate small{font-size:14px;color:var(--txt-2);font-weight:500;margin-left:6px;letter-spacing:0;}
.tier-desc{margin-top:12px;font-size:14px;color:var(--txt-2);line-height:1.8;}
.tier-tag{margin-top:16px;display:inline-flex;padding:5px 12px;border-radius:999px;font-size:12px;background:rgba(255,122,69,.12);color:var(--promo);border:1px solid rgba(255,122,69,.3);}

/* ============ 套餐对比 ============ */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.plan{position:relative;display:flex;flex-direction:column;}
.plan-hot{border-color:rgba(47,227,200,.42);background:linear-gradient(165deg,rgba(47,227,200,.13),rgba(255,255,255,.025));}
.plan-corner{
  position:absolute;top:-12px;right:20px;padding:5px 14px;border-radius:999px;
  font-size:12px;font-weight:700;background:var(--promo);color:#2B0F03;
}
.plan-title{font-size:18px;color:#fff;}
.plan-price{margin-top:10px;font-size:30px;color:var(--accent);}
.plan-price small{font-size:13px;color:var(--txt-2);font-weight:500;margin-left:6px;}
.plan-note{margin-top:8px;font-size:13px;color:var(--txt-2);}
.plan-list{margin-top:20px;display:flex;flex-direction:column;gap:11px;flex:1;}
.plan-list li{display:flex;gap:10px;font-size:14px;color:var(--txt);align-items:flex-start;line-height:1.7;}
.plan-list li svg{flex:0 0 16px;width:16px;height:16px;margin-top:5px;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round;}
.li-yes svg{stroke:var(--ok);}
.li-no{color:#6C788C;}
.li-no svg{stroke:#6C788C;}
.plan .btn{margin-top:22px;}

/* ============ 限时入口 ============ */
.limited{
  display:flex;align-items:center;gap:26px;flex-wrap:wrap;
  padding:22px 26px;border-radius:var(--radius-card);
  background:linear-gradient(100deg,rgba(47,227,200,.10),rgba(255,122,69,.08));
  border:1px solid rgba(47,227,200,.26);backdrop-filter:blur(10px);
}
.countdown{display:flex;align-items:center;gap:8px;}
.cd-block{
  min-width:52px;padding:8px 10px;border-radius:999px;text-align:center;
  background:rgba(255,122,69,.12);border:1px solid rgba(255,122,69,.34);
}
.cd-num{font-size:19px;color:var(--promo);}
.cd-unit{font-size:11px;color:var(--txt-2);}
.limited-text{flex:1;min-width:220px;}
.limited-text strong{display:block;font-size:16px;color:#fff;}
.limited-text span{font-size:13.5px;color:var(--txt-2);}

/* ============ 场景流程 ============ */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.flow-step{position:relative;padding:24px 22px;border-radius:var(--radius-card);background:var(--glass);border:1px solid var(--line);}
.flow-num{font-size:13px;color:var(--accent);letter-spacing:.1em;}
.flow-step h3{font-size:16px;margin-top:12px;color:#fff;}
.flow-step p{margin-top:10px;font-size:14px;color:var(--txt-2);line-height:1.8;}

/* ============ 表单 ============ */
.consult-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:30px;align-items:start;}
.value-list{display:flex;flex-direction:column;gap:16px;margin-top:24px;}
.value-item{display:flex;gap:12px;align-items:flex-start;}
.value-item i{
  flex:0 0 30px;width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  background:rgba(47,227,200,.10);border:1px solid rgba(47,227,200,.28);
}
.value-item i svg{width:15px;height:15px;stroke:var(--accent);stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round;}
.value-item strong{display:block;font-size:15px;color:#fff;}
.value-item span{font-size:13.5px;color:var(--txt-2);line-height:1.75;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field-full{grid-column:1 / -1;}
.field label{font-size:13.5px;color:var(--txt-2);}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:10px;
  background:rgba(7,11,20,.6);border:1px solid var(--line);color:var(--txt);
  font-size:14.5px;transition:border-color .2s ease,box-shadow .2s ease;appearance:none;
}
.field textarea{min-height:118px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:#61708A;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:rgba(47,227,200,.55);box-shadow:0 0 0 3px rgba(47,227,200,.14);
}
.form-note{margin-top:14px;font-size:12.5px;color:var(--txt-2);}

/* ============ 最新信息列表 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  display:flex;flex-direction:column;border-radius:var(--radius-card);overflow:hidden;
  background:linear-gradient(170deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.08);box-shadow:var(--shadow-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;height:100%;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(47,227,200,.42);box-shadow:0 20px 48px rgba(0,0,0,.52);}
.post-thumb{position:relative;height:168px;overflow:hidden;}
.post-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(7,11,20,.75),rgba(7,11,20,.05));}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.post-title{font-size:16.5px;color:#fff;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease;}
.post-card:hover .post-title{color:var(--accent);}
.post-excerpt{font-size:13.8px;color:var(--txt-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:12px;border-top:1px solid var(--line);font-size:12.5px;color:var(--txt-2);}
.empty-state{
  grid-column:1 / -1;text-align:center;padding:56px 24px;border-radius:var(--radius-card);
  background:var(--glass);border:1px dashed var(--line);
}
.empty-state svg{width:38px;height:38px;stroke:var(--txt-2);stroke-width:1.5;fill:none;margin:0 auto 14px;stroke-linecap:round;stroke-linejoin:round;}
.empty-state p{color:var(--txt-2);font-size:14.5px;margin-bottom:18px;}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1.5fr .85fr;gap:28px;align-items:start;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px;background:none;border:none;cursor:pointer;text-align:left;
  font-size:15.5px;font-weight:700;color:var(--txt);transition:color .2s ease;
}
.faq-q:hover{color:var(--accent);}
.faq-q svg{flex:0 0 16px;width:16px;height:16px;stroke:var(--accent);stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s ease;}
.faq-item.open .faq-q svg{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a p{padding:0 4px 20px;font-size:14.5px;color:var(--txt-2);line-height:1.9;}
.faq-side{position:sticky;top:32px;}

/* ============ CTA 通栏 ============ */
.cta-band{
  padding:36px 34px;border-radius:var(--radius-card);
  background:linear-gradient(110deg,rgba(47,227,200,.14),rgba(19,28,51,.7));
  border:1px solid rgba(47,227,200,.28);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.6vw,26px);color:#fff;}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--txt-2);max-width:620px;}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--line);background:#080D18;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px;}
.footer-brand{margin-bottom:16px;gap:10px;}
.footer-brand .brand-mark{width:36px;height:36px;flex:0 0 36px;border-radius:10px;font-size:14px;}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:var(--txt-2);}
.footer-links a:hover{color:var(--accent);}
.footer-text{font-size:13.5px;color:var(--txt-2);line-height:1.85;}
.footer-bottom{
  margin-top:52px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--txt-2);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sidebar-w:76px;}
  .sidebar{padding:18px 10px;align-items:center;}
  .brand{flex-direction:column;gap:6px;padding:4px 0 16px;width:100%;align-items:center;}
  .brand-text{display:none;}
  .side-label{display:none;}
  .nav-item{justify-content:center;padding:12px 0;}
  .nav-item.active::before{left:-10px;}
  .nav-text{display:none;}
  .side-cta{padding:10px 8px;}
  .side-cta p,.side-cta .side-cta-title{display:none;}
  .btn-mini{font-size:12px;padding:8px 4px;}
  .hero-grid{gap:40px;}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:1023px){
  .hero{padding:72px 0 64px;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual img{height:320px;}
  .section{padding:64px 0;}
  .section-tight{padding:56px 0;}
  .tier-grid,.plan-grid,.post-grid{grid-template-columns:repeat(2,1fr);}
  .tier-1,.tier-2,.tier-3{min-height:0;}
  .consult-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .faq-side{position:static;}
}
@media (max-width:767px){
  .topbar{display:flex;}
  .sidebar{
    width:262px;padding:18px 16px;align-items:stretch;
    transform:translateX(-102%);transition:transform .28s ease;
  }
  .sidebar.open{transform:translateX(0);}
  .sidebar .brand{flex-direction:row;align-items:center;justify-content:flex-start;}
  .sidebar .brand-text{display:block;}
  .sidebar .side-label{display:block;}
  .sidebar .nav-item{justify-content:flex-start;padding:12px 14px;}
  .sidebar .nav-item.active::before{left:-16px;}
  .sidebar .nav-text{display:inline;}
  .sidebar .side-cta{padding:16px;}
  .sidebar .side-cta p,.sidebar .side-cta .side-cta-title{display:block;}
  .sidebar .btn-mini{font-size:13px;padding:9px 10px;}
  .main-area{margin-left:0;width:100%;padding-top:56px;}
  .container{padding:0 18px;}
  .section{padding:48px 0;}
  .section-tight{padding:44px 0;}
  .hero{padding:56px 0 48px;}
  .hero-visual img{height:250px;}
  .hero-actions .btn{width:100%;}
  .tier-grid,.plan-grid,.post-grid,.flow-grid,.trust-grid,.form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .limited{padding:20px;}
  .cta-band{padding:28px 22px;flex-direction:column;align-items:flex-start;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .section-title{font-size:23px;}
  .hero h1{font-size:27px;}
  .cd-block{min-width:44px;padding:6px 8px;}
  .cd-num{font-size:16px;}
}

/* roulang page: article */
:root{
  --bg-base:#070B14;
  --bg-elev:#0E1526;
  --bg-elev2:#131C33;
  --glass:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.10);
  --txt:#E8EEF7;
  --txt-2:#9AA7BD;
  --accent:#2FE3C8;
  --promo:#FF7A45;
  --ok:#5BD68A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --radius-img:12px;
  --shadow-card:0 12px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(47,227,200,.35),0 8px 28px rgba(47,227,200,.22);
  --mono:ui-monospace,SFMono-Regular,"DIN Alternate","Roboto Mono",monospace;
  --sidebar-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--txt);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:var(--accent);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:#7CF0DE;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.35;color:var(--txt);}
p{margin:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
::selection{background:rgba(47,227,200,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#0A101D;}
::-webkit-scrollbar-thumb{background:rgba(47,227,200,.28);border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:rgba(47,227,200,.45);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- 侧边栏 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:linear-gradient(180deg,rgba(19,28,51,.92),rgba(10,16,29,.96));
  border-right:1px solid var(--line);
  padding:22px 16px 18px;
  display:flex;flex-direction:column;gap:20px;
  overflow-y:auto;z-index:60;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(135deg,rgba(47,227,200,.22),rgba(47,227,200,.06));
  border:1px solid rgba(47,227,200,.35);
  color:var(--accent);font-weight:800;font-size:16px;font-family:var(--mono);letter-spacing:-.04em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-name{font-size:15px;font-weight:700;color:var(--txt);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.brand-sub{font-size:11px;color:var(--txt-2);letter-spacing:.08em;}
.side-label{font-size:11px;letter-spacing:.16em;color:var(--txt-2);padding:0 8px;text-transform:uppercase;}
.side-nav{display:flex;flex-direction:column;gap:6px;flex:1 1 auto;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:var(--radius-btn);
  color:var(--txt-2);font-size:14px;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.nav-item svg{width:19px;height:19px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.nav-item:hover{background:var(--glass);color:var(--txt);border-color:var(--line);}
.nav-item.active{background:var(--glass);color:var(--accent);border-color:rgba(47,227,200,.28);}
.nav-item.active::before{content:"";position:absolute;left:-1px;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--accent);}
.nav-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.sidebar-cta{
  border:1px solid var(--line);background:var(--glass);border-radius:var(--radius-card);
  padding:14px;display:flex;flex-direction:column;gap:8px;
}
.sidebar-cta-title{font-size:13px;font-weight:700;color:var(--txt);}
.sidebar-cta-text{font-size:12px;color:var(--txt-2);line-height:1.6;}
.app-main{margin-left:var(--sidebar-w);position:relative;z-index:1;min-height:100vh;}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:75;
  align-items:center;justify-content:space-between;gap:12px;
  padding:0 14px;background:rgba(9,14,25,.94);
  border-bottom:1px solid var(--line);backdrop-filter:blur(10px);
}
.topbar .brand-mark{width:34px;height:34px;font-size:13px;border-radius:10px;}
.topbar .brand-name{font-size:14px;}
.drawer-toggle{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--glass);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.drawer-toggle:hover{border-color:rgba(47,227,200,.4);background:rgba(47,227,200,.1);}
.drawer-toggle svg{width:18px;height:18px;stroke:var(--txt);fill:none;stroke-width:1.8;stroke-linecap:round;}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:70;
}
.drawer-mask.show{display:block;}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .22s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:linear-gradient(135deg,#39ECD2,#1FBFAB);color:#04231E;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,227,200,.5),0 12px 34px rgba(47,227,200,.3);color:#04231E;}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--txt);}
.btn-ghost:hover{border-color:rgba(47,227,200,.42);color:var(--accent);transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:13px;border-radius:9px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;letter-spacing:.03em;
  background:rgba(47,227,200,.12);border:1px solid rgba(47,227,200,.3);color:var(--accent);
}
.badge-promo{background:rgba(255,122,69,.14);border-color:rgba(255,122,69,.38);color:#FFB08A;}
.pill-num{font-family:var(--mono);font-weight:600;}

/* ---------- 文章区 ---------- */
.article-hero{
  position:relative;
  padding:36px 0 30px;
  background-image:linear-gradient(180deg,rgba(7,11,20,.72),rgba(7,11,20,.96)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-2);margin-bottom:22px;}
.crumbs a{color:var(--accent);}
.crumbs a:hover{text-decoration:underline;text-underline-offset:3px;}
.crumb-sep{color:rgba(154,167,189,.6);}
.crumb-current{color:var(--txt-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{font-size:34px;font-weight:800;line-height:1.3;margin:14px 0 16px;max-width:22ch;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-size:13px;color:var(--txt-2);padding-bottom:20px;border-bottom:1px solid var(--line);}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px;}
.article-meta .meta-item strong{color:var(--txt);font-weight:600;}

.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;
  padding:56px 0 72px;align-items:start;
}
.article-body{max-width:800px;width:100%;}
.article-content{font-size:16px;line-height:1.9;color:#D6DEEE;}
.article-content p{margin:0 0 1.1em;}
.article-content h2{position:relative;font-size:23px;margin:40px 0 16px;padding-left:16px;}
.article-content h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;background:var(--accent);}
.article-content h3{font-size:18px;margin:28px 0 12px;color:#CDECE6;}
.article-content h3::before{content:"# ";color:var(--txt-2);font-weight:400;}
.article-content blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--promo);
  background:var(--glass);border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:var(--txt-2);font-style:italic;
}
.article-content ul,.article-content ol{margin:0 0 1.1em;padding-left:24px;}
.article-content li{margin:8px 0;}
.article-content li::marker{color:var(--accent);}
.article-content img{border-radius:var(--radius-img);margin:24px auto;}
.article-content figure{margin:24px 0;}
.article-content figcaption{font-size:13px;color:var(--txt-2);text-align:center;margin-top:8px;}
.article-content table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:22px 0;font-size:14px;}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap;}
.article-content th{background:var(--glass);color:var(--txt);font-weight:600;}
.article-content a{text-decoration:underline;text-underline-offset:3px;}
.article-content hr{border:none;border-top:1px solid var(--line);margin:32px 0;}
.empty-state{
  border:1px dashed rgba(47,227,200,.32);background:var(--glass);
  border-radius:var(--radius-card);padding:40px 28px;text-align:center;
}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--txt-2);margin-bottom:20px;}

.rel-block{margin-top:56px;padding-top:36px;border-top:1px solid var(--line);}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;}
.block-head h2{font-size:22px;}
.block-head p{font-size:13px;color:var(--txt-2);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:linear-gradient(180deg,rgba(19,28,51,.86),rgba(12,18,33,.92));
  border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(47,227,200,.4);box-shadow:0 18px 46px rgba(0,0,0,.55);}
.card:hover .card-title{color:var(--accent);}
.card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-elev2);}
.card-thumb img{width:100%;height:100%;object-fit:cover;}
.card-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(7,11,20,.75));}
.card-thumb .badge{position:absolute;left:12px;top:12px;z-index:2;}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-title{font-size:16px;font-weight:700;line-height:1.5;transition:color .2s ease;}
.card-text{font-size:13px;color:var(--txt-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--txt-2);}
.card-link{position:absolute;inset:0;z-index:3;}
.card{position:relative;}

.article-side{position:sticky;top:24px;display:flex;flex-direction:column;gap:18px;}
.side-card{
  background:linear-gradient(180deg,rgba(19,28,51,.88),rgba(12,18,33,.94));
  border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-card);
}
.side-card h3{font-size:15px;margin-bottom:14px;}
.side-list{display:flex;flex-direction:column;gap:10px;}
.side-list a{font-size:13px;color:var(--txt-2);display:flex;align-items:center;gap:8px;}
.side-list a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);flex:0 0 auto;}
.side-list a:hover{color:var(--accent);}
.side-note{font-size:13px;color:var(--txt-2);line-height:1.75;}

.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;justify-content:space-between;
  padding:22px 26px;border-radius:var(--radius-card);
  background:linear-gradient(135deg,rgba(47,227,200,.12),rgba(255,122,69,.08));
  border:1px solid rgba(47,227,200,.28);
}
.countdown{display:flex;align-items:center;gap:8px;}
.countdown .cd-num{
  font-family:var(--mono);font-weight:600;font-size:18px;color:var(--promo);
  background:rgba(255,122,69,.12);border:1px solid rgba(255,122,69,.32);
  border-radius:var(--radius-pill);padding:6px 14px;min-width:52px;text-align:center;
}
.cta-band .cta-text{flex:1 1 320px;font-size:15px;color:var(--txt);}
.cta-band .cta-text span{display:block;font-size:13px;color:var(--txt-2);}

.faq-wrap{margin-top:56px;padding-top:36px;border-top:1px solid var(--line);}
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:860px;}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--glass);overflow:hidden;}
.faq-item summary{
  cursor:pointer;list-style:none;padding:16px 20px;font-size:15px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";width:9px;height:9px;flex:0 0 auto;
  border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);
  transform:rotate(45deg);transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg);}
.faq-item p{padding:0 20px 18px;color:var(--txt-2);font-size:14px;line-height:1.85;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,16,29,.6),rgba(7,11,20,1));
  padding:56px 0 26px;margin-top:24px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{margin-bottom:14px;}
.footer-text{font-size:13px;color:var(--txt-2);line-height:1.85;}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--txt);margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a,.footer-links span{font-size:13px;color:var(--txt-2);}
.footer-links a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:36px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12px;color:var(--txt-2);
}

@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;padding:44px 0 64px;}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap;}
  .article-side .side-card{flex:1 1 260px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .article-title{font-size:30px;}
}
@media (min-width:768px) and (max-width:1279px){
  :root{--sidebar-w:76px;}
  .sidebar{padding:18px 10px;align-items:center;}
  .sidebar .brand-text,.sidebar .side-label,.sidebar .sidebar-cta{display:none;}
  .nav-item{justify-content:center;padding:12px 0;width:52px;}
  .nav-text{
    position:absolute;left:66px;top:50%;transform:translateY(-50%) scale(.96);
    background:var(--bg-elev2);border:1px solid var(--line);
    padding:6px 12px;border-radius:8px;font-size:13px;color:var(--txt);
    opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s ease;
    z-index:90;box-shadow:var(--shadow-card);white-space:nowrap;
  }
  .nav-item:hover .nav-text,.nav-item:focus-visible .nav-text{opacity:1;transform:translateY(-50%) scale(1);}
  .side-nav{width:100%;align-items:center;}
}
@media (max-width:767px){
  .topbar{display:flex;}
  .sidebar{
    width:266px;transform:translateX(-104%);
    transition:transform .26s ease;z-index:85;
    box-shadow:0 0 60px rgba(0,0,0,.6);
  }
  .sidebar.open{transform:translateX(0);}
  .app-main{margin-left:0;padding-top:56px;}
  .article-title{font-size:25px;}
  .crumb-current{white-space:normal;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .article-hero{padding:26px 0 24px;}
  .article-layout{padding:34px 0 52px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .article-title{font-size:22px;}
  .article-content{font-size:15px;}
  .btn{width:100%;}
  .countdown .cd-num{min-width:44px;font-size:16px;padding:5px 11px;}
}

/* roulang page: category2 */
:root{
  --bg-base:#070B14;
  --bg-elev:#0E1526;
  --bg-elev2:#131C33;
  --glass:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.10);
  --txt:#E8EEF7;
  --txt-2:#9AA7BD;
  --accent:#2FE3C8;
  --promo:#FF7A45;
  --ok:#5BD68A;
  --r-card:14px;
  --r-btn:10px;
  --shadow-card:0 12px 40px rgba(0,0,0,.45);
  --mono:ui-monospace,"SFMono-Regular","DIN Alternate",Menlo,Consolas,monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:15px;
  line-height:1.8;
  color:var(--txt);
  background-color:var(--bg-base);
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.35;}
p{margin:0;}
::selection{background:rgba(47,227,200,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#080d18;}
::-webkit-scrollbar-thumb{background:rgba(47,227,200,.28);border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:rgba(47,227,200,.45);}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ============ 左侧导航 ============ */
.side-nav{
  position:fixed;left:0;top:0;bottom:0;width:248px;
  display:flex;flex-direction:column;gap:18px;
  padding:24px 18px;
  background:linear-gradient(180deg,rgba(14,21,38,.96),rgba(7,11,20,.96));
  border-right:1px solid var(--line);
  z-index:50;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;flex:0 0 44px;
  border-radius:12px;
  background:linear-gradient(140deg,rgba(47,227,200,.9),rgba(47,227,200,.35));
  color:#03211c;font-weight:800;font-size:16px;letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(47,227,200,.35),0 8px 22px rgba(47,227,200,.18);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-name{font-size:15px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.brand-sub{font-size:12px;color:var(--txt-2);white-space:nowrap;}
.side-menu{display:flex;flex-direction:column;gap:6px;margin-top:6px;}
.side-label{font-size:12px;color:var(--txt-2);letter-spacing:.16em;padding:0 12px 2px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:10px;font-size:14px;color:var(--txt-2);
  border:1px solid transparent;transition:all .2s ease;
}
.nav-item svg{width:19px;height:19px;flex:0 0 19px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.nav-item:hover{color:var(--txt);background:var(--glass);border-color:var(--line);}
.nav-item.active{color:var(--txt);background:rgba(255,255,255,.07);border-color:rgba(47,227,200,.22);}
.nav-item.active::before{
  content:"";position:absolute;left:-18px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--accent);
}
.side-cta{
  margin-top:auto;padding:14px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
}
.side-cta p{font-size:13px;color:var(--txt-2);margin-bottom:10px;}

/* ============ 顶部移动栏 / 抽屉 ============ */
.topbar{
  display:none;position:fixed;left:0;right:0;top:0;height:56px;z-index:70;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(9,14,25,.94);border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.topbar .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:13px;border-radius:10px;}
.topbar .brand-name{font-size:14px;}
.drawer-btn{
  width:40px;height:40px;border-radius:10px;background:var(--glass);
  border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;}
.drawer-btn:hover{border-color:rgba(47,227,200,.4);color:var(--accent);}
.overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:55;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.overlay.show{opacity:1;visibility:visible;}

/* ============ 主区域 ============ */
.main-area{margin-left:248px;min-height:100vh;display:flex;flex-direction:column;}
main{flex:1;}

/* ============ Banner ============ */
.page-banner{
  position:relative;overflow:hidden;min-height:212px;
  display:flex;align-items:center;
  border-bottom:1px solid var(--line);
  background-image:
    radial-gradient(480px 240px at 12% 20%,rgba(47,227,200,.16),transparent 68%),
    linear-gradient(100deg,rgba(7,11,20,.95) 0%,rgba(7,11,20,.78) 52%,rgba(7,11,20,.9) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:auto,auto,cover;
  background-position:center,center,center;
}
.banner-grid{
  display:grid;grid-template-columns:1.55fr 1fr;gap:36px;align-items:center;
  padding:44px 0;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--txt-2);margin-bottom:14px;flex-wrap:wrap;}
.crumb a{color:var(--accent);}
.crumb a:hover{text-decoration:underline;text-underline-offset:4px;}
.crumb span.sep{color:rgba(255,255,255,.25);}
.crumb .current{color:var(--txt-2);}
.page-banner h1{font-size:32px;font-weight:800;margin-bottom:12px;}
.page-banner h1 em{font-style:normal;color:var(--accent);}
.banner-lead{color:var(--txt-2);font-size:15px;max-width:640px;}
.banner-note{
  padding:18px 20px;border-radius:var(--r-card);
  background:rgba(19,28,51,.72);border:1px solid var(--line);
  backdrop-filter:blur(8px);box-shadow:var(--shadow-card);
}
.banner-note h2{font-size:15px;margin-bottom:8px;color:var(--accent);}
.banner-note p{font-size:13.5px;color:var(--txt-2);line-height:1.85;}

/* ============ 通用板块 ============ */
.section{padding:72px 0;}
.section + .section{border-top:1px solid rgba(255,255,255,.05);}
.section-head{max-width:760px;margin-bottom:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.18em;
  color:var(--accent);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);display:inline-block;}
.section-head h2{font-size:26px;font-weight:800;margin-bottom:12px;}
.section-head p{color:var(--txt-2);font-size:15px;}

/* ============ 数据胶囊 ============ */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:34px;}
.stat{
  padding:20px 22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.stat .num{
  font-family:var(--mono);font-size:30px;font-weight:600;letter-spacing:-.02em;
  color:var(--accent);display:block;line-height:1.2;
}
.stat .num.promo{color:var(--promo);}
.stat .lbl{font-size:13px;color:var(--txt-2);margin-top:6px;display:block;}

/* ============ 时间轴 ============ */
.timeline{display:flex;flex-direction:column;}
.tl-item{display:grid;grid-template-columns:118px 28px 1fr;align-items:start;}
.tl-time{
  font-family:var(--mono);font-size:13px;color:var(--txt-2);
  padding-top:16px;text-align:right;letter-spacing:.02em;
}
.tl-rail{position:relative;align-self:stretch;min-height:100%;}
.tl-rail::before{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  top:0;bottom:0;width:1px;background:var(--line);
}
.tl-item:first-child .tl-rail::before{top:24px;}
.tl-item:last-child .tl-rail::before{bottom:calc(100% - 24px);}
.tl-dot{
  position:absolute;left:50%;top:18px;transform:translateX(-50%);
  width:11px;height:11px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(47,227,200,.14);
}
.tl-item.accent .tl-dot{background:var(--promo);box-shadow:0 0 0 4px rgba(255,122,69,.16);}
.tl-card{
  margin:0 0 18px 4px;padding:20px 22px;border-radius:var(--r-card);
  background:var(--bg-elev);border:1px solid var(--line);
  box-shadow:var(--shadow-card);transition:border-color .2s ease,transform .2s ease;
}
.tl-card:hover{border-color:rgba(47,227,200,.4);transform:translateY(-2px);}
.tl-card-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px;}
.tl-card h3{font-size:17px;font-weight:700;}
.tl-card:hover h3{color:var(--accent);}
.tl-card p{color:var(--txt-2);font-size:14px;margin-bottom:12px;}
.tl-points{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px 10px;}
.tl-points li{
  font-size:12.5px;color:var(--txt-2);padding:5px 11px;border-radius:999px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.tl-time-sm{display:none;font-family:var(--mono);font-size:12px;color:var(--txt-2);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(47,227,200,.12);border:1px solid rgba(47,227,200,.3);color:var(--accent);
}
.badge.promo{background:rgba(255,122,69,.13);border-color:rgba(255,122,69,.34);color:var(--promo);}
.badge.muted{background:rgba(255,255,255,.05);border-color:var(--line);color:var(--txt-2);}

/* ============ 三步核对 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.step{
  position:relative;padding:24px 22px;border-radius:var(--r-card);
  background:linear-gradient(180deg,var(--bg-elev2),var(--bg-elev));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:border-color .2s ease,transform .2s ease;
}
.step:hover{border-color:rgba(47,227,200,.4);transform:translateY(-3px);}
.step-no{
  font-family:var(--mono);font-size:13px;font-weight:600;color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:14px;
  background:rgba(47,227,200,.1);border:1px solid rgba(47,227,200,.28);
}
.step h3{font-size:16.5px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--txt-2);}

/* ============ 图文卡 ============ */
.fact-row{
  display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center;
  margin-top:34px;padding:26px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
}
.fact-row img{width:100%;height:230px;object-fit:cover;border:1px solid rgba(47,227,200,.22);}
.fact-row h3{font-size:20px;margin-bottom:12px;}
.fact-row p{color:var(--txt-2);font-size:14.5px;margin-bottom:14px;}
.check-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px;}
.check-list li{display:flex;gap:10px;font-size:14px;color:var(--txt-2);}
.check-list li::before{
  content:"";flex:0 0 16px;height:16px;margin-top:7px;border-radius:5px;
  background:rgba(47,227,200,.16);
  background-image:linear-gradient(135deg,transparent 45%,var(--accent) 45%,var(--accent) 55%,transparent 55%);
  border:1px solid rgba(47,227,200,.3);
}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:1.7fr 1fr;gap:26px;align-items:start;}
.faq-list{border-top:1px solid var(--line);}
.faq{
  border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:18px 6px;cursor:pointer;font-size:15.5px;font-weight:600;
  list-style:none;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--accent);}
.faq .faq-arrow{
  flex:0 0 18px;width:18px;height:18px;transition:transform .22s ease;
  fill:none;stroke:var(--accent);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;
}
.faq[open] .faq-arrow{transform:rotate(180deg);}
.faq-body{
  padding:0 6px 20px;color:var(--txt-2);font-size:14px;
  animation:fadeSlide .22s ease;
}
@keyframes fadeSlide{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}
.faq-aside{
  padding:24px;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(19,28,51,.92),rgba(14,21,38,.92));
  border:1px solid rgba(47,227,200,.24);box-shadow:var(--shadow-card);
}
.faq-aside h3{font-size:17px;margin-bottom:10px;}
.faq-aside p{font-size:14px;color:var(--txt-2);margin-bottom:18px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:14.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;line-height:1.4;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{
  background:var(--accent);color:#04211c;
  box-shadow:0 0 0 1px rgba(47,227,200,.35),0 8px 28px rgba(47,227,200,.22);
}
.btn-primary:hover{background:#46efd6;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,227,200,.5),0 12px 32px rgba(47,227,200,.3);}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--txt);}
.btn-ghost:hover{border-color:rgba(47,227,200,.42);color:var(--accent);transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:13.5px;}
.btn:active{transform:translateY(1px);}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

/* ============ CTA 通栏 ============ */
.cta-band{
  padding:26px 28px;border-radius:var(--r-card);
  background:linear-gradient(100deg,rgba(19,28,51,.96),rgba(14,21,38,.92));
  border:1px solid rgba(255,255,255,.12);box-shadow:var(--shadow-card);
  display:flex;align-items:center;gap:26px;flex-wrap:wrap;
}
.countdown{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.cd-pill{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;
  min-width:54px;padding:8px 10px;border-radius:999px;
  background:rgba(255,122,69,.1);border:1px solid rgba(255,122,69,.32);
}
.cd-num{font-family:var(--mono);font-size:19px;font-weight:600;color:var(--promo);line-height:1.1;}
.cd-lbl{font-size:11px;color:var(--txt-2);letter-spacing:.04em;}
.cta-text{flex:1 1 300px;min-width:220px;}
.cta-text strong{display:block;font-size:17px;font-weight:700;margin-bottom:4px;}
.cta-text span{font-size:14px;color:var(--txt-2);}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,15,27,.9),rgba(7,11,20,.98));
  padding:56px 0 0;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{margin-bottom:14px;}
.footer-text{font-size:13.5px;color:var(--txt-2);line-height:1.85;}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--txt);margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:9px;}
.footer-links a{font-size:13.5px;color:var(--txt-2);width:fit-content;position:relative;}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;
  background:var(--accent);transition:width .2s ease;
}
.footer-links a:hover{color:var(--accent);}
.footer-links a:hover::after{width:100%;}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--txt-2);
}

/* ============ 断点 ============ */
@media (max-width:1279px){
  .side-nav{width:76px;padding:22px 12px;align-items:center;}
  .side-nav .brand-text{display:none;}
  .side-nav .side-label{display:none;}
  .side-nav .nav-item{justify-content:center;padding:12px 8px;width:100%;}
  .side-nav .nav-item .nav-text{display:none;}
  .side-nav .nav-item:hover .nav-text{
    display:block;position:absolute;left:56px;top:50%;transform:translateY(-50%);
    padding:6px 11px;border-radius:8px;background:#131C33;border:1px solid var(--line);
    color:var(--txt);font-size:13px;white-space:nowrap;z-index:60;
    box-shadow:0 10px 24px rgba(0,0,0,.5);
  }
  .side-nav .nav-item.active::before{left:-12px;}
  .side-nav .side-cta{display:none;}
  .main-area{margin-left:76px;}
  .banner-grid{grid-template-columns:1fr;gap:22px;}
  .page-banner h1{font-size:28px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:26px;}
  .footer-grid > div:last-child{grid-column:span 3;}
}
@media (max-width:1023px){
  .stats{grid-template-columns:repeat(3,1fr);gap:14px;}
  .steps{grid-template-columns:1fr 1fr;}
  .steps .step:last-child{grid-column:span 2;}
  .faq-wrap{grid-template-columns:1fr;}
  .fact-row{grid-template-columns:1fr;}
  .fact-row img{height:210px;}
}
@media (max-width:767px){
  .topbar{display:flex;}
  .side-nav{
    width:276px;padding:20px 16px;align-items:stretch;
    transform:translateX(-100%);transition:transform .28s ease;
    z-index:60;border-right:1px solid var(--line);
  }
  .side-nav.open{transform:translateX(0);}
  .side-nav .brand-text{display:flex;}
  .side-nav .side-label{display:block;}
  .side-nav .nav-item{justify-content:flex-start;padding:12px;}
  .side-nav .nav-item .nav-text{display:inline;}
  .side-nav .nav-item.active::before{left:-16px;}
  .side-nav .side-cta{display:block;}
  .main-area{margin-left:0;padding-top:56px;}
  .container{padding:0 18px;}
  .page-banner{min-height:auto;}
  .banner-grid{padding:34px 0 38px;}
  .page-banner h1{font-size:23px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:21px;}
  .stats{grid-template-columns:1fr;gap:12px;}
  .stat .num{font-size:26px;}
  .steps{grid-template-columns:1fr;}
  .steps .step:last-child{grid-column:auto;}
  .tl-item{grid-template-columns:20px 1fr;}
  .tl-time{display:none;}
  .tl-time-sm{display:inline-block;margin-bottom:8px;}
  .tl-card{margin-left:2px;padding:18px;}
  .cta-band{padding:20px;gap:16px;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-grid > div:last-child{grid-column:auto;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:520px){
  .page-banner h1{font-size:21px;}
  .badge{font-size:11.5px;}
  .countdown{gap:6px;}
  .cd-pill{min-width:48px;padding:7px 8px;}
  .cd-num{font-size:17px;}
}

/* roulang page: category1 */
:root{
    --bg-base:#070B14;
    --bg-elev:#0E1526;
    --bg-elev2:#131C33;
    --glass:rgba(255,255,255,.06);
    --line:rgba(255,255,255,.10);
    --txt:#E8EEF7;
    --txt-2:#9AA7BD;
    --accent:#2FE3C8;
    --promo:#FF7A45;
    --ok:#5BD68A;
    --radius-card:14px;
    --radius-btn:10px;
    --radius-pill:999px;
    --shadow-card:0 12px 40px rgba(0,0,0,.45);
    --shadow-glow:0 0 0 1px rgba(47,227,200,.35), 0 8px 28px rgba(47,227,200,.22);
    --side-w:248px;
    --side-w-sm:76px;
    --space-sec:88px;
    --mono:ui-monospace,"SFMono-Regular","DIN Alternate",Menlo,Consolas,monospace;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  html body{
    margin:0;
    padding:0;
    background-color:var(--bg-base);
    background-image:
      linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
    background-size:24px 24px;
    color:var(--txt);
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:15.5px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  ::selection{background:rgba(47,227,200,.28);color:#fff}
  ::-webkit-scrollbar{width:10px;height:10px}
  ::-webkit-scrollbar-track{background:#080D18}
  ::-webkit-scrollbar-thumb{background:rgba(47,227,200,.28);border-radius:999px;border:2px solid #080D18}
  ::-webkit-scrollbar-thumb:hover{background:rgba(47,227,200,.45)}
  .main a{color:inherit;text-decoration:none}
  .main img{display:block;max-width:100%}
  .main ul{margin:0;padding:0;list-style:none}
  .main h1,.main h2,.main h3{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.35}
  .main p{margin:0}
  .container{max-width:1240px;margin:0 auto;padding:0 24px}

  /* ============ 品牌 ============ */
  .brand{display:flex;align-items:center;gap:12px;text-decoration:none}
  .brand-mark{
    flex:none;display:inline-flex;align-items:center;justify-content:center;
    min-width:52px;height:38px;padding:0 12px;
    font-family:var(--mono);font-weight:700;font-size:18px;letter-spacing:.02em;
    color:#05221E;background:linear-gradient(140deg,#4BF0D6,#22C6AE);
    border-radius:var(--radius-btn);box-shadow:0 6px 20px rgba(47,227,200,.28);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
  .brand-name{font-size:15px;font-weight:800;color:var(--txt);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .brand-sub{font-size:11.5px;color:var(--txt-2);letter-spacing:.06em}

  /* ============ 侧栏导航 ============ */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
    display:flex;flex-direction:column;gap:22px;
    padding:22px 18px;z-index:70;
    background:linear-gradient(180deg,rgba(19,28,51,.92),rgba(9,14,26,.96));
    border-right:1px solid var(--line);
    overflow-y:auto;
  }
  .side-brand{padding:4px 6px 16px;border-bottom:1px solid var(--line)}
  .side-nav{display:flex;flex-direction:column;gap:6px;position:relative}
  .side-label{font-size:11.5px;letter-spacing:.16em;color:var(--txt-2);padding:0 10px 8px}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:11px;
    padding:11px 12px;border-radius:var(--radius-btn);
    color:var(--txt-2);font-size:14.5px;font-weight:600;
    border:1px solid transparent;
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .15s ease;
  }
  .nav-item svg{flex:none;width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
  .nav-item:hover{background:var(--glass);color:var(--txt);border-color:var(--line)}
  .nav-item:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
  .nav-item.active{
    background:rgba(47,227,200,.10);color:var(--txt);border-color:rgba(47,227,200,.28);
  }
  .nav-item.active::before{
    content:"";position:absolute;left:-1px;top:9px;bottom:9px;width:3px;border-radius:3px;
    background:var(--accent);box-shadow:0 0 12px rgba(47,227,200,.7);
  }
  .nav-item.active svg{color:var(--accent)}
  .nav-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .side-cta{
    margin-top:auto;padding:16px;border-radius:var(--radius-card);
    background:var(--glass);border:1px solid var(--line);
  }
  .side-cta-text{font-size:13px;color:var(--txt-2);line-height:1.7;margin-bottom:12px}
  .side-cta .btn{width:100%;justify-content:center}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;border-radius:var(--radius-btn);
    font-size:14.5px;font-weight:700;letter-spacing:.01em;
    border:1px solid transparent;cursor:pointer;text-decoration:none;
    transition:transform .16s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  }
  .btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
  .btn:active{transform:translateY(1px)}
  .btn-primary{color:#03231F;background:linear-gradient(140deg,#4BF0D6,#22C6AE);box-shadow:var(--shadow-glow)}
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,227,200,.45),0 12px 34px rgba(47,227,200,.3)}
  .btn-ghost{color:var(--txt);background:var(--glass);border-color:var(--line)}
  .btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(47,227,200,.4);transform:translateY(-1px)}
  .btn-sm{padding:9px 16px;font-size:13.5px}

  /* ============ 徽章 / 标签 ============ */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 12px;border-radius:var(--radius-pill);
    font-size:12.5px;font-weight:700;letter-spacing:.04em;
    color:var(--accent);background:rgba(47,227,200,.10);
    border:1px solid rgba(47,227,200,.28);
  }
  .badge-promo{color:var(--promo);background:rgba(255,122,69,.10);border-color:rgba(255,122,69,.32)}
  .badge-ok{color:var(--ok);background:rgba(91,214,138,.10);border-color:rgba(91,214,138,.3)}

  /* ============ 移动端顶栏 / 抽屉 ============ */
  .mobile-bar{
    display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:90;
    align-items:center;justify-content:space-between;padding:0 16px;
    background:rgba(9,14,26,.94);border-bottom:1px solid var(--line);
    backdrop-filter:blur(12px);
  }
  .drawer-btn{
    width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
    background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-btn);
    color:var(--txt);cursor:pointer;
  }
  .drawer-btn:hover{border-color:rgba(47,227,200,.4)}
  .drawer-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
  .drawer-mask{
    display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:80;opacity:0;
    transition:opacity .2s ease;
  }

  /* ============ 主内容 ============ */
  .main{padding-bottom:0}

  /* ============ Banner ============ */
  .banner{
    position:relative;overflow:hidden;
    min-height:210px;
    border-bottom:1px solid var(--line);
    background-image:linear-gradient(90deg,rgba(7,11,20,.94) 0%,rgba(7,11,20,.72) 55%,rgba(7,11,20,.55) 100%),url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;
  }
  .banner::after{
    content:"";position:absolute;width:480px;height:480px;right:-60px;top:-180px;
    background:radial-gradient(circle,rgba(47,227,200,.20),transparent 68%);
    pointer-events:none;
  }
  .banner-inner{
    position:relative;z-index:2;display:grid;grid-template-columns:1.35fr .85fr;gap:40px;align-items:center;
    padding:56px 0;
  }
  .crumb{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--txt-2);margin-bottom:14px}
  .crumb a{color:var(--accent);text-decoration:none;border-bottom:1px solid transparent;transition:border-color .2s ease}
  .crumb a:hover{border-color:var(--accent)}
  .crumb span.sep{color:rgba(154,167,189,.55)}
  .banner h1{font-size:34px;line-height:1.3;margin-bottom:14px}
  .banner h1 em{font-style:normal;color:var(--accent)}
  .banner-lead{color:var(--txt-2);font-size:15.5px;max-width:620px}
  .banner-aside{
    padding:20px 22px;border-radius:var(--radius-card);
    background:rgba(12,18,33,.72);border:1px solid var(--line);
    box-shadow:var(--shadow-card);
  }
  .banner-aside h2{font-size:15px;color:var(--txt);margin-bottom:9px}
  .banner-aside p{font-size:13.5px;color:var(--txt-2);line-height:1.8}

  /* ============ 通用板块 ============ */
  .section{padding:var(--space-sec) 0}
  .section-tight{padding:56px 0}
  .section-head{max-width:720px;margin-bottom:40px}
  .section-head h2{font-size:27px;margin-bottom:12px}
  .section-head p{color:var(--txt-2);font-size:15px}
  .eyebrow{display:inline-block;font-size:12.5px;letter-spacing:.18em;color:var(--accent);margin-bottom:12px;font-weight:700}

  /* ============ 数据面板 ============ */
  .stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .stat-card{
    padding:24px;border-radius:var(--radius-card);
    background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
    border:1px solid var(--line);box-shadow:var(--shadow-card);
    transition:border-color .2s ease,transform .2s ease;
  }
  .stat-card:hover{border-color:rgba(47,227,200,.4);transform:translateY(-3px)}
  .stat-num{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--accent);letter-spacing:-.02em}
  .stat-num.promo{color:var(--promo)}
  .stat-label{font-size:14px;font-weight:700;margin:8px 0 6px}
  .stat-note{font-size:13px;color:var(--txt-2)}

  /* ============ 图文交替 ============ */
  .zigzag{display:flex;flex-direction:column;gap:56px}
  .zigzag-row{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center}
  .zigzag-row:nth-child(even) .zigzag-media{order:2}
  .zigzag-media{
    position:relative;border-radius:var(--radius-card);overflow:hidden;
    border:1px solid rgba(47,227,200,.22);box-shadow:var(--shadow-card);
  }
  .zigzag-media img{width:100%;height:290px;object-fit:cover}
  .zigzag-media::after{
    content:"";position:absolute;inset:auto 0 0 0;height:55%;
    background:linear-gradient(180deg,transparent,rgba(7,11,20,.85));
  }
  .zigzag-body h3{font-size:22px;margin:14px 0 12px}
  .zigzag-body p{color:var(--txt-2);font-size:15px;margin-bottom:16px}
  .tick-list{display:flex;flex-direction:column;gap:10px}
  .tick-list li{position:relative;padding-left:26px;font-size:14.5px;color:var(--txt)}
  .tick-list li::before{
    content:"";position:absolute;left:0;top:9px;width:12px;height:12px;border-radius:4px;
    background:rgba(47,227,200,.16);border:1px solid rgba(47,227,200,.5);
  }
  .tick-list li::after{
    content:"";position:absolute;left:4px;top:12px;width:4px;height:6px;
    border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(40deg);
  }

  /* ============ 场景卡 ============ */
  .scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
  .scene-card{
    padding:22px;border-radius:var(--radius-card);background:var(--glass);
    border:1px solid var(--line);transition:border-color .2s ease,transform .2s ease,background .2s ease;
  }
  .scene-card:hover{border-color:rgba(47,227,200,.4);transform:translateY(-3px);background:rgba(255,255,255,.08)}
  .scene-icon{
    width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
    background:rgba(47,227,200,.12);border:1px solid rgba(47,227,200,.28);margin-bottom:14px;
  }
  .scene-icon svg{width:19px;height:19px;fill:none;stroke:var(--accent);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
  .scene-card h3{font-size:16px;margin-bottom:8px}
  .scene-card p{font-size:13.5px;color:var(--txt-2)}

  /* ============ 步骤 ============ */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
  .step{
    position:relative;padding:24px 20px;border-radius:var(--radius-card);
    background:var(--bg-elev);border:1px solid var(--line);
  }
  .step-no{
    font-family:var(--mono);font-size:13px;font-weight:700;color:var(--accent);
    letter-spacing:.12em;margin-bottom:10px;display:block;
  }
  .step h3{font-size:16px;margin-bottom:8px}
  .step p{font-size:13.5px;color:var(--txt-2)}
  .step::after{
    content:"";position:absolute;right:-12px;top:38px;width:12px;height:1px;background:rgba(47,227,200,.35);
  }
  .step:last-child::after{display:none}

  /* ============ FAQ ============ */
  .faq-wrap{display:grid;grid-template-columns:1.6fr 1fr;gap:32px;align-items:start}
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:19px 4px;background:none;border:0;cursor:pointer;text-align:left;
    color:var(--txt);font-size:15.5px;font-weight:700;font-family:inherit;
    transition:color .2s ease;
  }
  .faq-q:hover{color:var(--accent)}
  .faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
  .faq-q .arrow{
    flex:none;width:22px;height:22px;border-radius:50%;border:1px solid var(--line);
    display:flex;align-items:center;justify-content:center;
    transition:transform .22s ease,border-color .22s ease;
  }
  .faq-q .arrow svg{width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
  .faq-item.open .faq-q{color:var(--accent)}
  .faq-item.open .arrow{transform:rotate(180deg);border-color:rgba(47,227,200,.5)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
  .faq-a p{padding:0 4px 20px;color:var(--txt-2);font-size:14.5px}
  .faq-card{
    padding:24px;border-radius:var(--radius-card);
    background:linear-gradient(160deg,rgba(47,227,200,.12),rgba(255,255,255,.03));
    border:1px solid rgba(47,227,200,.28);box-shadow:var(--shadow-card);
    position:sticky;top:24px;
  }
  .faq-card h3{font-size:17px;margin-bottom:10px}
  .faq-card p{font-size:13.5px;color:var(--txt-2);margin-bottom:16px}
  .faq-card .btn{width:100%;justify-content:center;margin-bottom:10px}

  /* ============ 通栏 CTA ============ */
  .cta-band{
    display:flex;align-items:center;gap:24px;flex-wrap:wrap;
    padding:22px 26px;border-radius:var(--radius-card);
    background:linear-gradient(120deg,rgba(47,227,200,.12),rgba(255,255,255,.04));
    border:1px solid rgba(47,227,200,.28);box-shadow:var(--shadow-card);
  }
  .countdown{display:flex;gap:6px;align-items:center;flex:none}
  .count-block{
    min-width:44px;padding:6px 8px;text-align:center;border-radius:var(--radius-pill);
    background:rgba(255,122,69,.12);border:1px solid rgba(255,122,69,.32);
  }
  .count-num{display:block;font-family:var(--mono);font-size:18px;font-weight:700;color:var(--promo);line-height:1.2}
  .count-cap{display:block;font-size:10px;color:var(--txt-2);letter-spacing:.08em}
  .cta-text{flex:1;min-width:240px}
  .cta-text strong{display:block;font-size:16px;margin-bottom:4px}
  .cta-text span{font-size:13.5px;color:var(--txt-2)}

  /* ============ 表单 ============ */
  .consult-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:32px;align-items:start}
  .value-list{display:flex;flex-direction:column;gap:16px}
  .value-item{display:flex;gap:12px;align-items:flex-start}
  .value-dot{
    flex:none;width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;
    background:rgba(47,227,200,.12);border:1px solid rgba(47,227,200,.28);
    font-family:var(--mono);font-size:12px;color:var(--accent);font-weight:700;
  }
  .value-item h3{font-size:15px;margin-bottom:3px}
  .value-item p{font-size:13.5px;color:var(--txt-2)}
  .form-card{
    padding:26px;border-radius:var(--radius-card);
    background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow-card);
  }
  .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .field{display:flex;flex-direction:column;gap:7px}
  .field.full{grid-column:1/-1}
  .field label{font-size:13px;color:var(--txt-2);font-weight:600}
  .field input,.field select,.field textarea{
    width:100%;padding:11px 13px;border-radius:var(--radius-btn);
    background:rgba(7,11,20,.66);border:1px solid var(--line);
    color:var(--txt);font-size:14.5px;font-family:inherit;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .field textarea{min-height:104px;resize:vertical}
  .field input::placeholder,.field textarea::placeholder{color:rgba(154,167,189,.62)}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:rgba(47,227,200,.6);box-shadow:0 0 0 3px rgba(47,227,200,.14);
  }
  .form-note{font-size:12.5px;color:var(--txt-2);margin-top:12px}

  /* ============ 页脚 ============ */
  .site-footer{border-top:1px solid var(--line);background:rgba(9,14,26,.72);padding:56px 0 22px;margin-top:0}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:34px}
  .footer-brand{margin-bottom:14px}
  .footer-text{font-size:13.5px;color:var(--txt-2);line-height:1.85}
  .footer-title{font-size:14px;font-weight:800;margin-bottom:14px}
  .footer-links{display:flex;flex-direction:column;gap:10px}
  .footer-links a{font-size:13.5px;color:var(--txt-2);text-decoration:none;transition:color .2s ease}
  .footer-links a:hover{color:var(--accent)}
  .footer-bottom{
    display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
    margin-top:40px;padding-top:18px;border-top:1px solid var(--line);
    font-size:12.5px;color:var(--txt-2);
  }

  /* ============ 响应式 ============ */
  @media (min-width:768px){
    .main{margin-left:var(--side-w-sm)}
  }
  @media (min-width:1280px){
    .main{margin-left:var(--side-w)}
  }
  @media (min-width:768px) and (max-width:1279px){
    .sidebar{width:var(--side-w-sm);padding:18px 10px;overflow:visible;align-items:center}
    .sidebar .brand-text{display:none}
    .side-brand{border-bottom:0;padding:4px 0 14px;justify-content:center}
    .side-label{display:none}
    .side-nav{width:100%;align-items:center}
    .nav-item{justify-content:center;padding:12px 0;width:100%}
    .nav-item .nav-text{
      position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%) translateX(-4px);
      padding:6px 12px;border-radius:8px;background:var(--bg-elev2);border:1px solid var(--line);
      box-shadow:var(--shadow-card);font-size:13px;color:var(--txt);opacity:0;pointer-events:none;
      transition:opacity .18s ease,transform .18s ease;z-index:90;
    }
    .nav-item:hover .nav-text{opacity:1;transform:translateY(-50%) translateX(0)}
    .side-cta{padding:12px 8px;width:100%}
    .side-cta-text{display:none}
    .side-cta .btn{padding:10px 6px;font-size:12px}
  }
  @media (max-width:1023px){
    .banner-inner{grid-template-columns:1fr;gap:26px;padding:44px 0}
    .banner h1{font-size:28px}
    .scene-grid,.steps{grid-template-columns:repeat(2,1fr)}
    .step::after{display:none}
    .faq-wrap{grid-template-columns:1fr}
    .faq-card{position:static}
    .consult-grid{grid-template-columns:1fr}
    .zigzag-row{grid-template-columns:1fr;gap:24px}
    .zigzag-row:nth-child(even) .zigzag-media{order:0}
    .zigzag-media img{height:240px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    .stat-grid{grid-template-columns:1fr 1fr}
    :root{--space-sec:64px}
  }
  @media (max-width:767px){
    .main{margin-left:0}
    .mobile-bar{display:flex}
    .sidebar{
      width:272px;transform:translateX(-100%);
      transition:transform .24s ease;box-shadow:0 0 60px rgba(0,0,0,.6);
    }
    .sidebar.open{transform:translateX(0)}
    .drawer-mask{display:block;pointer-events:none}
    .drawer-mask.show{opacity:1;pointer-events:auto}
    .main{padding-top:56px}
    .banner h1{font-size:24px}
    .banner-inner{padding:36px 0}
    .section{padding:48px 0}
    .stat-grid,.scene-grid,.steps{grid-template-columns:1fr}
    .form-grid{grid-template-columns:1fr}
    .container{padding:0 18px}
    .cta-band{padding:20px}
    .count-block{min-width:38px}
    .footer-grid{grid-template-columns:1fr}
    .footer-bottom{flex-direction:column;gap:8px}
  }

/* roulang page: category3 */
:root{
  --bg-base:#070B14;
  --bg-elev:#0E1526;
  --bg-elev2:#131C33;
  --glass:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.10);
  --txt:#E8EEF7;
  --txt-2:#9AA7BD;
  --accent:#2FE3C8;
  --promo:#FF7A45;
  --ok:#5BD68A;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --shadow-card:0 12px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(47,227,200,.35), 0 8px 28px rgba(47,227,200,.22);
  --mono:ui-monospace,"SF Mono","DIN Alternate",Menlo,Consolas,monospace;
  --side-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg-base);
  color:var(--txt);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:15.5px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:24px 24px;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
::selection{background:rgba(47,227,200,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#080D18;}
::-webkit-scrollbar-thumb{background:rgba(47,227,200,.28);border-radius:999px;border:2px solid #080D18;}
::-webkit-scrollbar-thumb:hover{background:rgba(47,227,200,.48);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--accent);color:#04110F;padding:10px 16px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:14px;font-weight:600;
  cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .22s ease,background .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,#2FE3C8,#16B7A0);color:#04110F;box-shadow:var(--glow);}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(47,227,200,.45),0 12px 34px rgba(47,227,200,.30);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--txt);}
.btn-ghost:hover{border-color:rgba(47,227,200,.42);color:var(--accent);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:9px 16px;font-size:13px;border-radius:9px;}
.btn-block{width:100%;}

/* ===== 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.04em;color:var(--accent);
  background:rgba(47,227,200,.10);border:1px solid rgba(47,227,200,.28);
}
.badge-promo{color:var(--promo);background:rgba(255,122,69,.10);border-color:rgba(255,122,69,.30);}
.badge-mute{color:var(--txt-2);background:var(--glass);border-color:var(--line);}

/* ===== 侧栏 ===== */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);z-index:60;
  display:flex;flex-direction:column;
  padding:22px 12px 20px;
  background:linear-gradient(180deg,#0B1220 0%,#070B14 100%);
  border-right:1px solid var(--line);
  overflow-y:auto;overflow-x:hidden;
}
.brand{display:flex;align-items:center;gap:12px;padding:8px 10px;border-radius:12px;transition:background .2s ease;}
.brand:hover{background:var(--glass);}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;display:grid;place-items:center;
  font-weight:800;font-size:15px;letter-spacing:.02em;color:#04110F;
  background:linear-gradient(140deg,#2FE3C8,#19B39C);
  box-shadow:var(--glow);
}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-name{font-size:15px;font-weight:700;color:var(--txt);letter-spacing:-.01em;white-space:nowrap;}
.brand-sub{font-size:11.5px;color:var(--txt-2);margin-top:1px;white-space:nowrap;}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:18px;}
.side-label{font-size:11px;letter-spacing:.16em;color:#5C6A82;padding:0 12px 8px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:10px;color:var(--txt-2);font-size:14px;
  border:1px solid transparent;transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.nav-item svg{width:18px;height:18px;flex:0 0 18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.nav-item:hover{color:var(--txt);background:var(--glass);border-color:var(--line);}
.nav-item.active{color:var(--txt);background:var(--glass);border-color:var(--line);}
.nav-item.active svg{stroke:var(--accent);}
.nav-item.active::after{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--accent);
  box-shadow:0 0 12px rgba(47,227,200,.7);
}
.nav-text{white-space:nowrap;}
.side-cta{margin-top:auto;padding:16px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);}
.side-cta p{margin:0 0 12px;font-size:13px;line-height:1.7;color:var(--txt-2);}
.drawer-close{display:none;}

/* ===== 顶部移动栏 ===== */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:50;
  align-items:center;justify-content:space-between;padding:0 14px;
  background:rgba(10,15,26,.94);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.topbar .brand{padding:4px;gap:10px;}
.topbar .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:13px;}
.topbar .brand-name{font-size:14px;}
.burger{
  width:40px;height:40px;border-radius:10px;background:var(--glass);border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;cursor:pointer;
  transition:border-color .2s ease;
}
.burger:hover{border-color:rgba(47,227,200,.42);}
.burger span{display:block;width:16px;height:1.6px;background:var(--txt);border-radius:2px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:55;
  opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.drawer-mask.show{opacity:1;pointer-events:auto;}
body.no-scroll{overflow:hidden;}

/* ===== 主区 ===== */
.app-main{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column;position:relative;z-index:1;}
main{flex:1;}

/* ===== 面包屑 ===== */
.crumb-wrap{padding:22px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-2);}
.crumb a{color:var(--accent);position:relative;}
.crumb a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--accent);transition:width .2s ease;}
.crumb a:hover::after{width:100%;}
.crumb span{color:#4A566C;}
.crumb em{font-style:normal;color:var(--txt-2);}

/* ===== Banner ===== */
.page-banner{position:relative;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:18px;}
.page-banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.42;}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,11,20,.95) 0%,rgba(7,11,20,.80) 48%,rgba(7,11,20,.90) 100%);
}
.banner-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.45fr .95fr;gap:36px;align-items:center;
  min-height:220px;padding-top:44px;padding-bottom:44px;
}
.banner-left h1{
  margin:14px 0 12px;font-size:clamp(24px,2.5vw,34px);line-height:1.35;
  font-weight:800;letter-spacing:-.01em;color:#fff;
}
.banner-sub{margin:0;color:var(--txt-2);font-size:14.5px;max-width:620px;}
.banner-aside{
  padding:18px 20px;border-radius:var(--r-card);background:var(--glass);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.banner-aside p{margin:0;font-size:13.5px;line-height:1.85;color:var(--txt-2);}

/* ===== 通用板块 ===== */
.sec{padding:76px 0;}
.sec-tight{padding:60px 0;}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head .badge{margin-bottom:14px;}
.sec-head h2{margin:0 0 14px;font-size:clamp(21px,1.9vw,27px);font-weight:800;letter-spacing:-.01em;color:var(--txt);}
.sec-desc{margin:0;color:var(--txt-2);font-size:14.5px;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* ===== 磁贴网格 ===== */
.tiles{display:grid;grid-template-columns:1.1fr .9fr;gap:20px;align-items:start;}
.tile-col{display:flex;flex-direction:column;gap:20px;}
.tile{
  position:relative;display:block;height:var(--h,300px);border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-elev);box-shadow:var(--shadow-card);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.tile img{width:100%;height:100%;object-fit:cover;opacity:.7;transition:transform .55s ease,opacity .35s ease;}
.tile::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.12) 0%,rgba(7,11,20,.70) 56%,rgba(7,11,20,.95) 100%);
}
.tile-body{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:22px;}
.tile h3{margin:10px 0 8px;font-size:19px;font-weight:700;letter-spacing:-.01em;color:#fff;transition:color .22s ease;}
.tile p{margin:0;font-size:13.5px;line-height:1.75;color:#B4C0D2;}
.tile:hover{transform:translateY(-4px);border-color:rgba(47,227,200,.42);box-shadow:0 18px 48px rgba(0,0,0,.55);}
.tile:hover img{transform:scale(1.045);opacity:.82;}
.tile:hover h3{color:var(--accent);}

/* ===== 步骤轨道 ===== */
.steps{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:30px;}
.steps::before{
  content:"";position:absolute;left:0;right:0;top:26px;height:1px;
  background:linear-gradient(90deg,rgba(47,227,200,.55),rgba(47,227,200,.10));
}
.step{position:relative;padding-top:66px;}
.step::before{
  content:"";position:absolute;top:18px;left:0;width:17px;height:17px;border-radius:50%;
  background:var(--bg-base);border:2px solid var(--accent);box-shadow:0 0 0 5px rgba(47,227,200,.10);
}
.step-num{font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.18em;color:var(--accent);}
.step h3{margin:10px 0 10px;font-size:17px;font-weight:700;color:var(--txt);letter-spacing:-.01em;}
.step p{margin:0;font-size:14px;line-height:1.8;color:var(--txt-2);}

/* ===== 核对清单与数据面板 ===== */
.check-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:22px;align-items:start;}
.panel{
  padding:26px;border-radius:var(--r-card);background:var(--glass);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.panel h2{margin:0 0 8px;font-size:20px;font-weight:800;letter-spacing:-.01em;}
.panel .panel-sub{margin:0 0 8px;font-size:14px;color:var(--txt-2);}
.check-list{list-style:none;margin:0;padding:0;}
.check-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line);}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.ck{
  flex:0 0 22px;width:22px;height:22px;margin-top:5px;border-radius:50%;
  display:grid;place-items:center;background:rgba(47,227,200,.12);border:1px solid rgba(47,227,200,.35);
  color:var(--accent);font-size:12px;font-weight:700;
}
.check-list strong{display:block;font-size:15px;color:var(--txt);font-weight:600;margin-bottom:4px;}
.check-list span{font-size:13.5px;color:var(--txt-2);line-height:1.75;}
.metrics{display:flex;flex-direction:column;gap:14px;}
.metric{padding:16px 18px;border-radius:var(--r-img);background:var(--bg-elev2);border:1px solid var(--line);}
.metric b{display:block;font-family:var(--mono);font-size:24px;font-weight:600;color:var(--accent);line-height:1.3;}
.metric span{display:block;font-size:13px;color:var(--txt-2);margin-top:4px;}
.metric-note{margin:16px 0 0;font-size:13px;line-height:1.8;color:var(--txt-2);}

/* ===== FAQ ===== */
.faq-grid{display:grid;grid-template-columns:1.5fr .85fr;gap:26px;align-items:start;}
.acc{border-top:1px solid var(--line);}
.acc-item{border-bottom:1px solid var(--line);}
.acc-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px;background:none;border:0;color:var(--txt);
  font-size:15.5px;font-weight:600;text-align:left;cursor:pointer;line-height:1.6;
  transition:color .2s ease;
}
.acc-btn:hover{color:var(--accent);}
.acc-btn .arw{flex:0 0 18px;width:18px;height:18px;color:var(--accent);transition:transform .22s ease;}
.acc-item.open .arw{transform:rotate(180deg);}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.acc-panel p{margin:0;padding:0 4px 20px;font-size:14.5px;line-height:1.85;color:var(--txt-2);}
.cta-card{
  padding:24px;border-radius:var(--r-card);background:var(--bg-elev2);
  border:1px solid rgba(47,227,200,.25);box-shadow:var(--shadow-card);
  position:sticky;top:24px;
}
.cta-card h3{margin:0 0 10px;font-size:17px;font-weight:700;color:var(--txt);}
.cta-card p{margin:0 0 18px;font-size:13.5px;line-height:1.8;color:var(--txt-2);}
.cta-card ul{list-style:none;margin:0 0 20px;padding:0;display:flex;flex-direction:column;gap:9px;}
.cta-card li{font-size:13.5px;color:var(--txt-2);padding-left:16px;position:relative;}
.cta-card li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--accent);}

/* ===== 通栏 CTA ===== */
.cta-band{padding:0 0 76px;}
.cta-inner{
  display:flex;align-items:center;gap:24px;flex-wrap:wrap;
  padding:24px 28px;border-radius:var(--r-card);
  background:linear-gradient(100deg,rgba(47,227,200,.09),rgba(255,255,255,.035));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.countdown{display:flex;align-items:center;gap:8px;}
.cd-num{
  font-family:var(--mono);font-size:19px;font-weight:600;color:var(--promo);
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,122,69,.10);border:1px solid rgba(255,122,69,.30);
}
.cd-sep{color:rgba(255,122,69,.55);font-family:var(--mono);}
.cta-text{flex:1;min-width:260px;}
.cta-text strong{display:block;font-size:16px;color:var(--txt);font-weight:700;margin-bottom:4px;}
.cta-text span{font-size:13.5px;color:var(--txt-2);}

/* ===== 页脚 ===== */
.site-footer{border-top:1px solid var(--line);background:#080D18;padding:56px 0 0;margin-top:auto;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{padding-left:0;margin-bottom:6px;}
.footer-title{font-size:13px;font-weight:700;color:var(--txt);letter-spacing:.06em;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;align-items:flex-start;}
.footer-links a{color:var(--txt-2);font-size:14px;position:relative;transition:color .2s ease;}
.footer-links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--accent);transition:width .2s ease;}
.footer-links a:hover{color:var(--accent);}
.footer-links a:hover::after{width:100%;}
.footer-text{color:var(--txt-2);font-size:13.5px;line-height:1.8;margin:14px 0 0;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding:20px 0;border-top:1px solid var(--line);
  color:#7C889E;font-size:13px;
}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  :root{--side-w:76px;}
  .sidebar{padding:20px 10px;}
  .side-label{display:none;}
  .brand{padding:6px;justify-content:center;}
  .brand-text{display:none;}
  .nav-item{justify-content:center;padding:12px 8px;}
  .nav-item .nav-text{
    position:absolute;left:calc(100% + 14px);top:50%;transform:translateY(-50%);
    white-space:nowrap;background:var(--bg-elev2);border:1px solid var(--line);
    padding:6px 12px;border-radius:8px;font-size:13px;color:var(--txt);
    opacity:0;pointer-events:none;transition:opacity .18s ease;z-index:20;
    box-shadow:0 10px 28px rgba(0,0,0,.5);
  }
  .nav-item:hover .nav-text{opacity:1;}
  .nav-item.active::after{left:-10px;}
  .side-cta{display:none;}
  .banner-inner{grid-template-columns:1fr;}
  .banner-aside{max-width:640px;}
  .tiles{grid-template-columns:1fr 1fr;}
}
@media (max-width:1023px){
  .sec{padding:60px 0;}
  .cta-band{padding-bottom:60px;}
  .check-grid,.faq-grid{grid-template-columns:1fr;}
  .cta-card{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:900px){
  .tiles{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;gap:8px;}
  .steps::before{display:none;}
  .step{padding-top:54px;}
  .step::before{top:14px;}
}
@media (max-width:767px){
  .app-main{margin-left:0;padding-top:56px;}
  .topbar{display:flex;}
  .sidebar{
    width:272px;transform:translateX(-100%);transition:transform .28s ease;
    padding:20px 14px;z-index:60;
  }
  .sidebar.open{transform:translateX(0);box-shadow:24px 0 60px rgba(0,0,0,.6);}
  .sidebar .brand{justify-content:flex-start;padding:6px 8px;}
  .sidebar .brand-text{display:flex;}
  .side-label{display:block;}
  .nav-item{justify-content:flex-start;padding:12px;}
  .nav-item .nav-text{position:static;opacity:1;background:none;border:0;padding:0;box-shadow:none;transform:none;font-size:14px;color:inherit;}
  .nav-item.active::after{left:-14px;}
  .side-cta{display:block;margin-top:24px;}
  .drawer-close{
    display:grid;place-items:center;position:absolute;top:14px;right:12px;
    width:34px;height:34px;border-radius:9px;background:var(--glass);
    border:1px solid var(--line);color:var(--txt-2);cursor:pointer;font-size:16px;line-height:1;
  }
  .drawer-close:hover{color:var(--accent);border-color:rgba(47,227,200,.42);}
  .sec{padding:48px 0;}
  .sec-tight{padding:40px 0;}
  .cta-band{padding-bottom:48px;}
  .banner-inner{padding-top:32px;padding-bottom:32px;min-height:180px;gap:22px;}
  .panel{padding:22px 18px;}
  .cta-inner{padding:20px;gap:16px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .tile{height:auto;min-height:230px;}
  .tile img{position:absolute;inset:0;}
  .tile-body{position:relative;}
  .cd-num{font-size:16px;padding:5px 11px;}
  .btn{width:100%;}
  .btn-inline{width:auto;}
}