/* roulang page: index */
:root{
  --c-primary:#E2452B;
  --c-primary-600:#C4361F;
  --c-primary-050:#FDEDE9;
  --c-accent:#1F8A6B;
  --c-accent-050:#E8F5F0;
  --c-star:#E8B44A;
  --c-ink:#161B26;
  --c-ink-2:#3A4356;
  --c-muted:#6B7385;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-night:#101725;
  --c-night-2:#1A2233;
  --c-line:#E6E3DD;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,23,37,.05);
  --sh-2:0 6px 20px rgba(16,23,37,.07);
  --sh-3:0 18px 44px rgba(16,23,37,.12);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;color:var(--c-ink-2);
  background:var(--c-bg);
  background-image:radial-gradient(rgba(16,23,37,.035) 1px,transparent 1px);
  background-size:26px 26px;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.35;}
h1{font-size:clamp(28px,4vw,44px);line-height:1.25;}
h2{font-size:clamp(22px,2.6vw,30px);}
h3{font-size:19px;font-weight:600;line-height:1.4;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px;}
.section{padding:80px 0;}
.section--tight{padding:64px 0;}
.section--soft{background:#F1EFEA;}
.section--night{background:var(--c-night);color:rgba(255,255,255,.78);}
.section--night h2,.section--night h3{color:#fff;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-primary);text-transform:uppercase;margin-bottom:12px;}
.eyebrow::before{content:"";width:16px;height:2px;background:var(--c-primary);display:inline-block;}
.section-head h2{position:relative;padding-left:16px;}
.section-head h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--c-primary);}
.lead{margin-top:14px;font-size:16px;color:var(--c-muted);max-width:640px;}
.muted{color:var(--c-muted);font-size:14px;}
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);background:var(--c-primary-050);color:var(--c-primary-600);font-size:13px;font-weight:600;}
.tag--green{background:var(--c-accent-050);color:var(--c-accent);}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:10px;border:1px solid transparent;font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;white-space:nowrap;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(226,69,43,.24);}
.btn-primary:hover{background:var(--c-primary-600);transform:translateY(-1px);box-shadow:0 10px 22px rgba(226,69,43,.3);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 3px 10px rgba(226,69,43,.24);}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-line);}
.btn-ghost:hover{background:var(--c-primary-050);border-color:rgba(226,69,43,.4);color:var(--c-primary-600);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-light{background:#fff;color:var(--c-primary-600);}
.btn-light:hover{background:#FFF4F1;transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);transform:translateY(-1px);}
.btn-block{width:100%;}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:14px;border-bottom:1px solid transparent;transition:border-color .18s ease,gap .18s ease;}
.text-link:hover{border-color:var(--c-primary);gap:10px;}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line);transition:box-shadow .25s ease,background-color .25s ease;}
.site-header.is-scrolled{box-shadow:var(--sh-2);background:rgba(255,255,255,.92);}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(150deg,var(--c-night),#26314A);display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-1);}
.logo-mark svg{width:22px;height:22px;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:.01em;}
.logo-text span{font-size:11px;color:var(--c-muted);letter-spacing:.14em;text-transform:uppercase;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{position:relative;padding:10px 12px;font-size:15px;color:var(--c-ink-2);border-radius:8px;transition:color .18s ease,background-color .18s ease;}
.nav-links a::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;}
.nav-links a:hover{color:var(--c-ink);background:var(--c-primary-050);}
.nav-links a.is-active{color:var(--c-ink);font-weight:700;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:12px;}
.nav-actions .btn{height:44px;}
.hamburger{display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:10px;background:#fff;cursor:pointer;position:relative;margin-left:auto;}
.hamburger span{position:absolute;left:11px;width:22px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .25s ease,opacity .2s ease;}
.hamburger span:nth-child(1){top:15px;}
.hamburger span:nth-child(2){top:21px;}
.hamburger span:nth-child(3){top:27px;}
.hamburger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.drawer{position:fixed;inset:72px 0 0;background:#fff;z-index:55;padding:24px;transform:translateY(-12px);opacity:0;visibility:hidden;transition:opacity .22s ease,transform .22s ease,visibility .22s;overflow-y:auto;}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer .drawer-cta{display:grid;gap:10px;margin-bottom:24px;}
.drawer .drawer-links{display:grid;gap:2px;border-top:1px solid var(--c-line);padding-top:16px;}
.drawer .drawer-links a{padding:14px 4px;font-size:16px;color:var(--c-ink-2);border-bottom:1px solid var(--c-line);}
.drawer .drawer-links a.is-active{color:var(--c-primary);font-weight:700;}
.drawer .drawer-note{margin-top:20px;font-size:12px;color:var(--c-muted);line-height:1.7;}

/* Hero */
.hero{position:relative;padding:72px 0 80px;overflow:hidden;background:#fff;border-bottom:1px solid var(--c-line);}
.hero::after{content:"";position:absolute;right:-160px;top:-140px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(226,69,43,.10),transparent 65%);pointer-events:none;}
.hero-grid{display:grid;grid-template-columns:55fr 45fr;gap:56px;align-items:center;position:relative;z-index:1;}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;}
.hero h1{margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--c-primary);}
.hero-sub{font-size:17px;line-height:1.8;color:var(--c-ink-2);max-width:560px;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;padding-top:22px;border-top:1px solid var(--c-line);}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-2);font-weight:600;}
.trust-item svg{width:18px;height:18px;color:var(--c-accent);}
.hero-media{position:relative;}
.hero-media .hero-img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-3);}
.hero-float{position:absolute;left:-28px;bottom:-30px;width:230px;background:#fff;border-radius:var(--r-md);box-shadow:var(--sh-3);padding:14px;display:flex;gap:12px;align-items:center;}
.hero-float img{width:64px;height:64px;aspect-ratio:1/1;object-fit:cover;border-radius:10px;}
.hero-float strong{display:block;font-size:14px;color:var(--c-ink);}
.hero-float span{font-size:12px;color:var(--c-muted);}

/* 痛点 */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.pain-card{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:14px;padding:22px 24px 22px 28px;box-shadow:var(--sh-1);transition:box-shadow .2s ease,transform .2s ease;}
.pain-card::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;background:var(--c-star);}
.pain-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.pain-card h3{font-size:16.5px;margin-bottom:8px;}
.pain-card p{margin:0;font-size:14.5px;color:var(--c-muted);}

/* 方案卡 */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.plan{background:var(--c-surface);border:1px solid var(--c-line);border-radius:14px;box-shadow:0 6px 20px rgba(0,0,0,.06);padding:24px;display:flex;flex-direction:column;transition:transform .22s ease,box-shadow .22s ease;}
.plan:hover{transform:translateY(-3px);box-shadow:var(--sh-3);}
.plan h3{margin-bottom:10px;}
.plan p{font-size:14.5px;color:var(--c-ink-2);margin-bottom:14px;}
.plan .fit{font-size:13.5px;color:var(--c-muted);background:#F5F3EF;border-radius:var(--r-sm);padding:10px 12px;margin-bottom:16px;}
.plan .fit strong{color:var(--c-ink-2);}
.plan-foot{margin-top:auto;}
.plan-a .plan-media{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-md);margin-bottom:16px;}
.plan-b .num{font-size:40px;font-weight:700;color:var(--c-primary);line-height:1;letter-spacing:-.02em;margin-bottom:14px;}
.plan-b ul{display:grid;gap:8px;margin-bottom:14px;}
.plan-b li{position:relative;padding-left:20px;font-size:14.5px;color:var(--c-ink-2);}
.plan-b li::before{content:"";position:absolute;left:4px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--c-accent);}
.plan-c .icon-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:16px;}
.plan-c .icon-cell{background:#F5F3EF;border-radius:var(--r-sm);padding:12px;font-size:13px;font-weight:600;color:var(--c-ink-2);display:flex;flex-direction:column;gap:6px;}
.plan-c .icon-cell i{width:26px;height:26px;border-radius:8px;background:var(--c-primary-050);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-style:normal;font-size:13px;font-weight:700;}

/* 数据区 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px;}
.stat{padding:24px;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);}
.stat b{display:block;font-size:clamp(30px,3.4vw,40px);line-height:1.1;color:var(--c-star);font-weight:700;letter-spacing:-.02em;}
.stat span{display:block;margin-top:8px;font-size:14px;color:rgba(255,255,255,.82);}
.stat-note{margin-top:24px;font-size:12.5px;color:rgba(255,255,255,.6);}

/* 保障网格 */
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.guard{background:#fff;border:1px solid var(--c-line);border-radius:14px;padding:24px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;}
.guard:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.guard .dot{width:36px;height:36px;border-radius:10px;background:var(--c-accent-050);color:var(--c-accent);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;margin-bottom:14px;}
.guard h3{font-size:16px;margin-bottom:8px;}
.guard p{margin:0;font-size:14px;color:var(--c-muted);}

/* 文章列表 */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:32px;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{background:#fff;border:1px solid var(--c-line);border-radius:14px;overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform .22s ease,box-shadow .22s ease;}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:#EDEAE4;position:relative;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-thumb .fallback{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--c-muted);font-size:13px;}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:16.5px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{font-size:14px;color:var(--c-muted);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;font-size:12.5px;color:var(--c-muted);display:flex;align-items:center;gap:8px;padding-top:12px;border-top:1px solid var(--c-line);}
.empty-state{grid-column:1/-1;background:#fff;border:1px dashed var(--c-line);border-radius:14px;padding:48px 24px;text-align:center;}
.empty-state .ico{width:52px;height:52px;border-radius:50%;background:var(--c-accent-050);color:var(--c-accent);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:22px;}
.empty-state p{color:var(--c-muted);margin-bottom:18px;}

/* FAQ */
.faq{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{width:100%;background:none;border:0;padding:22px 44px 22px 0;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);cursor:pointer;position:relative;transition:color .18s ease;}
.faq-q:hover{color:var(--c-primary);}
.faq-q .sign{position:absolute;right:6px;top:50%;width:22px;height:22px;margin-top:-11px;transition:transform .22s ease;}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;}
.faq-q .sign::before{left:0;top:10px;width:22px;height:2px;}
.faq-q .sign::after{left:10px;top:0;width:2px;height:22px;transition:opacity .2s ease;}
.faq-q[aria-expanded="true"] .sign{transform:rotate(180deg);}
.faq-q[aria-expanded="true"] .sign::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a p{padding:0 44px 24px 0;font-size:15px;line-height:1.8;color:var(--c-muted);margin:0;}

/* 表单 */
.form-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-2);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px;}
.field .req{color:var(--c-primary);margin-left:2px;}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--c-line);background:#FCFBF9;border-radius:10px;padding:0 14px;height:46px;font-size:15px;transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;}
.field textarea{height:auto;padding:12px 14px;resize:vertical;min-height:104px;line-height:1.7;}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#D6D1C8;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(226,69,43,.12);}
.field .error-msg{display:none;margin-top:6px;font-size:12px;color:#D92D20;}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#D92D20;}
.field.has-error .error-msg{display:block;}
.privacy-note{margin-top:14px;font-size:12.5px;line-height:1.7;color:var(--c-muted);}
.privacy-note a{color:var(--c-primary);border-bottom:1px solid rgba(226,69,43,.4);}
.privacy-note a:hover{border-bottom-width:2px;}
.form-success{display:none;align-items:center;gap:12px;background:var(--c-accent-050);border:1px solid rgba(31,138,107,.25);color:var(--c-accent);border-radius:var(--r-md);padding:14px 16px;font-size:14px;font-weight:600;margin-bottom:18px;}
.form-success.is-visible{display:flex;}
.form-aside ul{display:grid;gap:14px;margin-top:20px;}
.form-aside li{display:flex;gap:12px;font-size:14.5px;color:var(--c-ink-2);}
.form-aside li b{flex-shrink:0;width:24px;height:24px;border-radius:50%;background:var(--c-primary-050);color:var(--c-primary);font-size:12px;display:flex;align-items:center;justify-content:center;margin-top:3px;}

/* 弹层 */
.modal{position:fixed;inset:0;z-index:90;display:none;}
.modal.is-open{display:block;}
.modal-mask{position:absolute;inset:0;background:rgba(0,0,0,.5);}
.modal-panel{position:relative;max-width:480px;margin:6vh auto;background:#fff;border-radius:var(--r-lg);box-shadow:var(--sh-3);padding:26px;z-index:1;max-height:88vh;overflow-y:auto;}
.modal-close{position:absolute;right:10px;top:10px;width:40px;height:40px;border-radius:10px;border:0;background:#F5F3EF;color:var(--c-ink-2);font-size:20px;line-height:1;cursor:pointer;transition:background-color .18s ease,color .18s ease;}
.modal-close:hover{background:var(--c-primary-050);color:var(--c-primary-600);}
.modal-panel h3{margin-bottom:6px;}
.modal-panel .modal-sub{font-size:14px;color:var(--c-muted);margin-bottom:20px;}

/* CTA 带 */
.cta-band{background:linear-gradient(120deg,var(--c-primary),#C4361F);border-radius:var(--r-lg);padding:40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;color:#fff;box-shadow:0 18px 40px rgba(226,69,43,.24);}
.cta-band h2{color:#fff;margin-bottom:8px;}
.cta-band p{margin:0;color:rgba(255,255,255,.86);font-size:15px;max-width:560px;}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.cta-band .privacy-line{margin-top:14px;font-size:12.5px;color:rgba(255,255,255,.8);width:100%;}

/* 页脚 */
.site-footer{background:var(--c-night);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.footer-brand .logo-text strong{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin-top:16px;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color .18s ease,padding-left .18s ease;}
.footer-col a:hover{color:#FF8A70;padding-left:4px;}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.52);}
.to-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:12px;border:0;background:var(--c-ink);color:#fff;font-size:18px;cursor:pointer;box-shadow:var(--sh-3);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .22s ease,transform .22s ease,visibility .22s,background-color .18s ease;z-index:70;}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-primary);}

/* 响应式 */
@media (max-width:1023px){
  .nav-links,.nav-actions{display:none;}
  .hamburger{display:block;}
  .hero{padding:56px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-float{position:static;width:100%;margin-top:16px;box-shadow:var(--sh-2);}
  .plans{grid-template-columns:repeat(2,1fr);}
  .stats{grid-template-columns:repeat(2,1fr);}
  .guard-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .form-wrap{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section--tight{padding:40px 0;}
  .pain-grid{grid-template-columns:1fr;}
  .plans{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;}
  .guard-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .cta-band{padding:28px 22px;}
  .footer-grid{grid-template-columns:1fr;}
  .nav-inner{height:64px;}
  .drawer{inset:64px 0 0;}
  .modal-panel{margin:0;max-width:none;border-radius:16px 16px 0 0;position:absolute;bottom:0;left:0;right:0;max-height:92vh;}
  .modal.is-open{display:flex;align-items:flex-end;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:419px){
  .hero-cta .btn{width:100%;}
  .trust-row{gap:14px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#E2452B;
  --c-primary-600:#C6371F;
  --c-primary-050:#FDECE8;
  --c-accent:#1F8A6B;
  --c-accent-050:#E9F4F0;
  --c-star:#E8B44A;
  --c-ink:#161B26;
  --c-ink-2:#3A4356;
  --c-muted:#6B7385;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-night:#101725;
  --c-night-2:#1A2233;
  --c-line:#E6E3DD;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,23,37,.05);
  --sh-2:0 6px 20px rgba(16,23,37,.07);
  --sh-3:0 18px 44px rgba(16,23,37,.12);
  --header-h:70px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
input,select,textarea{font:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(16,23,37,.92);
  backdrop-filter:saturate(160%) blur(10px);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{
  box-shadow:0 8px 26px rgba(9,13,22,.28);
  background:rgba(16,23,37,.96);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:var(--header-h);
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.logo-mark{
  width:36px;height:36px;
  display:flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:rgba(232,180,74,.12);
  border:1px solid rgba(232,180,74,.3);
}
.logo-mark svg{width:20px;height:20px;display:block;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:15px;font-weight:700;color:#fff;letter-spacing:.01em;}
.logo-text span{font-size:10.5px;color:rgba(255,255,255,.5);letter-spacing:.1em;text-transform:uppercase;}

.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  flex:1 1 auto;
  justify-content:center;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:9px 13px;
  font-size:14.5px;
  color:rgba(255,255,255,.74);
  border-radius:8px;
  white-space:nowrap;
  transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.07);}
.nav-links a.is-active{color:#fff;font-weight:600;}
.nav-links a.is-active::after{
  content:"";
  position:absolute;
  left:13px;right:13px;bottom:3px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
}

.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  white-space:nowrap;
  border:1px solid transparent;
  transition:transform .16s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(226,69,43,.28);}
.btn-primary:hover{background:var(--c-primary-600);transform:translateY(-1px);box-shadow:0 10px 24px rgba(226,69,43,.34);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(226,69,43,.24);}
.btn-ghost{border-color:rgba(255,255,255,.28);color:#fff;background:transparent;}
.btn-ghost:hover{background:rgba(226,69,43,.16);border-color:rgba(226,69,43,.6);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{background:#fff;color:var(--c-ink);}
.btn-light:hover{background:#F3F1EC;transform:translateY(-1px);}
.btn-outline{border:1px solid var(--c-line);color:var(--c-ink);background:#fff;}
.btn-outline:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-050);}

.burger{
  display:none;
  width:44px;height:44px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.22);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.burger span{
  display:block;width:20px;height:2px;border-radius:2px;background:#fff;
  transition:transform .22s ease,opacity .22s ease;
}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-drawer{
  position:fixed;
  top:var(--header-h);
  left:0;right:0;
  background:var(--c-night-2);
  border-bottom:1px solid rgba(255,255,255,.08);
  padding:18px 20px 22px;
  transform:translateY(-140%);
  transition:transform .3s ease;
  z-index:55;
  max-height:calc(100vh - var(--header-h));
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateY(0);}
.drawer-cta{display:grid;gap:10px;margin-bottom:16px;}
.drawer-cta .btn{width:100%;}
.drawer-links{display:grid;gap:2px;}
.drawer-links a{
  padding:12px 12px;
  font-size:15px;
  color:rgba(255,255,255,.8);
  border-radius:10px;
  border-left:3px solid transparent;
}
.drawer-links a:hover{background:rgba(255,255,255,.06);color:#fff;}
.drawer-links a.is-active{color:#fff;font-weight:600;border-left-color:var(--c-primary);background:rgba(226,69,43,.12);}
.drawer-note{
  margin-top:16px;
  font-size:12.5px;
  line-height:1.7;
  color:rgba(255,255,255,.5);
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:14px;
}

/* ============ 窄版 Hero ============ */
.hero-narrow{
  position:relative;
  min-height:260px;
  display:flex;
  align-items:center;
  padding:44px 0 52px;
  background:var(--c-night) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow:hidden;
}
.hero-narrow::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(16,23,37,.94) 0%,rgba(16,23,37,.82) 46%,rgba(16,23,37,.58) 100%);
}
.hero-narrow .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.58);
  margin-bottom:16px;
  flex-wrap:wrap;
}
.breadcrumb a{color:rgba(255,255,255,.72);border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease;}
.breadcrumb a:hover{color:#fff;border-color:rgba(255,255,255,.5);}
.breadcrumb .sep{color:rgba(255,255,255,.3);}
.breadcrumb .current{color:rgba(255,255,255,.85);}
.hero-narrow h1{
  font-size:clamp(28px,4vw,42px);
  line-height:1.25;
  font-weight:700;
  color:#fff;
  letter-spacing:.01em;
  max-width:760px;
}
.hero-narrow .hero-desc{
  margin-top:16px;
  max-width:660px;
  font-size:16px;
  line-height:1.85;
  color:rgba(255,255,255,.78);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px;}
.tag-pill{
  display:inline-flex;align-items:center;
  padding:5px 14px;
  border-radius:var(--r-pill);
  font-size:13px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.16);
  color:rgba(255,255,255,.85);
}

/* ============ 通用板块 ============ */
.section{padding:80px 0;}
.section-alt{background:#F1EFE9;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--c-primary);
  font-weight:600;
  margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.35;
  font-weight:700;
  position:relative;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:8px;
  width:4px;height:calc(100% - 16px);
  border-radius:3px;
  background:var(--c-primary);
}
.section-sub{margin-top:14px;font-size:16px;color:var(--c-ink-2);max-width:640px;padding-left:16px;}

/* ============ 要点列表 ============ */
.point-list{display:grid;gap:16px;}
.point-item{
  display:flex;
  gap:20px;
  align-items:flex-start;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-left:3px solid var(--c-primary);
  border-radius:var(--r-md);
  padding:22px 24px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.point-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-left-color:var(--c-primary-600);}
.point-no{
  flex:0 0 auto;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--c-primary);
  background:var(--c-primary-050);
  border-radius:var(--r-pill);
  padding:4px 12px;
  line-height:1.6;
  margin-top:2px;
}
.point-body h3{font-size:18px;font-weight:600;line-height:1.45;}
.point-body p{margin-top:8px;font-size:15.5px;color:var(--c-ink-2);max-width:760px;}

/* ============ 对比卡 ============ */
.compare-card{
  display:grid;
  grid-template-columns:1fr 1fr;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.compare-col{padding:34px 32px;}
.compare-col + .compare-col{border-left:1px solid var(--c-line);}
.compare-col h3{font-size:20px;font-weight:700;line-height:1.4;margin-top:14px;}
.compare-col > p{margin-top:12px;font-size:15.5px;color:var(--c-ink-2);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 13px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge-primary{background:var(--c-primary-050);color:var(--c-primary-600);}
.badge-accent{background:var(--c-accent-050);color:var(--c-accent);}
.tick-list{margin-top:20px;display:grid;gap:11px;}
.tick-list li{
  position:relative;
  padding-left:26px;
  font-size:15px;
  color:var(--c-ink-2);
  line-height:1.75;
}
.tick-list li::before{
  content:"";
  position:absolute;
  left:2px;top:9px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--c-accent);
  box-shadow:0 0 0 3px rgba(31,138,107,.14);
}
.compare-col.is-alt .tick-list li::before{background:var(--c-star);box-shadow:0 0 0 3px rgba(232,180,74,.18);}

/* ============ 图文场景块 ============ */
.scenario-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.scenario-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-3);
  aspect-ratio:16/11;
  background:var(--c-night);
}
.scenario-media img{width:100%;height:100%;object-fit:cover;}
.scenario-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,23,37,0) 45%,rgba(16,23,37,.42) 100%);
}
.scenario-body h2{
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.35;
  font-weight:700;
  position:relative;
  padding-left:16px;
}
.scenario-body h2::before{
  content:"";
  position:absolute;left:0;top:8px;
  width:4px;height:calc(100% - 16px);
  border-radius:3px;background:var(--c-primary);
}
.scenario-body p{margin-top:16px;font-size:16px;color:var(--c-ink-2);max-width:560px;}
.scene-list{margin-top:24px;display:grid;gap:14px;}
.scene-list li{
  display:flex;gap:12px;
  align-items:flex-start;
  padding:16px 18px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  font-size:15px;
  color:var(--c-ink-2);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.scene-list li:hover{border-color:rgba(226,69,43,.4);box-shadow:var(--sh-2);transform:translateY(-2px);}
.scene-list .dot{
  flex:0 0 auto;
  width:9px;height:9px;border-radius:50%;
  background:var(--c-primary);
  margin-top:8px;
}

/* ============ FAQ ============ */
.faq-list{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.faq-item + .faq-item{border-top:1px solid var(--c-line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  text-align:left;
  padding:20px 24px;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  transition:background .18s ease,color .18s ease;
}
.faq-q:hover{background:#FAF9F6;color:var(--c-primary-600);}
.faq-icon{
  flex:0 0 auto;
  position:relative;
  width:22px;height:22px;
  border-radius:50%;
  border:1px solid var(--c-line);
  transition:transform .2s ease,background .2s ease,border-color .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--c-ink-2);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:opacity .2s ease,background .2s ease;
}
.faq-icon::before{width:10px;height:1.6px;}
.faq-icon::after{width:1.6px;height:10px;}
.faq-item.is-open .faq-icon{background:var(--c-primary-050);border-color:rgba(226,69,43,.4);transform:rotate(180deg);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--c-primary);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-a-inner{padding:0 24px 22px;}
.faq-a-inner p{font-size:15px;line-height:1.8;color:var(--c-ink-2);}
.faq-a-inner p + p{margin-top:10px;}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(118deg,var(--c-primary-600) 0%,var(--c-primary) 52%,#EE5C3C 100%);
  color:#fff;
  padding:56px 0;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-80px;top:-80px;
  width:300px;height:300px;
  border-radius:50%;
  background:rgba(255,255,255,.08);
}
.cta-inner{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(20px,2.4vw,27px);font-weight:700;line-height:1.4;}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.86);max-width:560px;}
.cta-band .privacy-note{
  position:relative;
  z-index:2;
  margin-top:22px;
  font-size:12.5px;
  line-height:1.7;
  color:rgba(255,255,255,.72);
}
.cta-band .privacy-note a{color:#fff;border-bottom:1px solid rgba(255,255,255,.5);}
.cta-band .privacy-note a:hover{border-bottom-width:2px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-night);color:rgba(255,255,255,.72);padding:64px 0 0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px;}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.6);
  transition:color .18s ease,padding-left .18s ease;
}
.footer-col a:hover{color:var(--c-star);padding-left:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);
  padding:20px 0 26px;
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.45);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;
  right:22px;
  bottom:26px;
  width:46px;height:46px;
  border-radius:50%;
  background:var(--c-primary);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(226,69,43,.34);
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background .18s ease;
  z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-primary-600);}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-actions{display:none;}
  .burger{display:flex;}
  .section{padding:64px 0;}
  .scenario-grid{gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .scenario-grid{grid-template-columns:1fr;}
  .scenario-media{aspect-ratio:16/10;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .hero-narrow{padding:34px 0 40px;min-height:0;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .compare-card{grid-template-columns:1fr;}
  .compare-col{padding:26px 20px;}
  .compare-col + .compare-col{border-left:0;border-top:1px solid var(--c-line);}
  .point-item{padding:18px;gap:14px;flex-direction:column;}
  .faq-q{padding:17px 18px;font-size:15px;}
  .faq-a-inner{padding:0 18px 18px;}
  .cta-band{padding:44px 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:22px;}
  .cta-inner .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .to-top{right:14px;bottom:16px;width:42px;height:42px;}
}
@media (max-width:420px){
  .logo-text strong{font-size:13.5px;}
  .logo-text span{font-size:9.5px;}
  .point-no{font-size:12px;}
}

/* roulang page: article */
:root{
  --c-primary:#E2452B;
  --c-primary-600:#C4361F;
  --c-primary-050:#FDECE8;
  --c-accent:#1F8A6B;
  --c-accent-050:#E8F5F0;
  --c-star:#E8B44A;
  --c-ink:#161B26;
  --c-ink-2:#3A4356;
  --c-muted:#6B7385;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-night:#101725;
  --c-line:#E6E3DD;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,23,37,.05);
  --sh-2:0 6px 20px rgba(16,23,37,.07);
  --sh-3:0 18px 44px rgba(16,23,37,.12);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:80px 0;}
.section-tight{padding:56px 0;}
.section-head{margin-bottom:36px;max-width:720px;}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.35;
  letter-spacing:.01em;
  padding-left:14px;
  border-left:4px solid var(--c-primary);
}
.section-head p{margin-top:12px;color:var(--c-muted);font-size:15.5px;line-height:1.8;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-primary);font-weight:600;margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--c-primary);border-radius:2px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:10px;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;transition:all .18s ease;white-space:nowrap;
}
.btn-sm{height:44px;padding:0 22px;font-size:14.5px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 2px 8px rgba(226,69,43,.22);}
.btn-primary:hover{background:var(--c-primary-600);transform:translateY(-1px);box-shadow:0 10px 22px rgba(226,69,43,.28);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{border-color:rgba(255,255,255,.32);color:#fff;background:transparent;}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.62);}
.btn-ghost:active{background:rgba(255,255,255,.06);}
.btn-outline{border-color:var(--c-line);color:var(--c-ink);background:var(--c-surface);}
.btn-outline:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-050);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(1px);}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(16,23,37,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 28px rgba(16,23,37,.3);background:rgba(16,23,37,.97);}
.header-inner{display:flex;align-items:center;gap:20px;height:74px;}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:rgba(232,180,74,.12);
  border:1px solid rgba(232,180,74,.36);
  flex-shrink:0;
}
.logo-mark svg{width:21px;height:21px;}
.logo-text strong{display:block;font-size:16px;font-weight:700;color:#fff;letter-spacing:.02em;line-height:1.2;}
.logo-text span{display:block;font-size:10.5px;letter-spacing:.16em;color:rgba(255,255,255,.45);text-transform:uppercase;margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;padding:10px 13px;font-size:14.5px;font-weight:500;
  color:rgba(255,255,255,.76);border-radius:8px;transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.08);}
.nav-links a.is-active{color:#fff;font-weight:700;}
.nav-links a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.header-cta{display:flex;align-items:center;gap:10px;margin-left:6px;flex-shrink:0;}
.hamburger{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid rgba(255,255,255,.2);margin-left:auto;
}
.hamburger span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;transition:transform .25s ease,opacity .2s ease;}
.hamburger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-panel{
  position:fixed;inset:74px 0 0 0;background:rgba(16,23,37,.98);
  padding:24px;z-index:75;display:none;flex-direction:column;gap:20px;
  overflow-y:auto;
}
.mobile-panel.is-open{display:flex;}
.mobile-panel .m-cta{display:flex;flex-direction:column;gap:10px;}
.mobile-panel .m-cta .btn{width:100%;}
.mobile-panel .m-links{display:flex;flex-direction:column;border-top:1px solid rgba(255,255,255,.1);}
.mobile-panel .m-links a{
  padding:15px 4px;font-size:16px;color:rgba(255,255,255,.82);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-panel .m-links a.is-active{color:var(--c-star);font-weight:700;}
.mobile-panel .m-note{font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.45);margin-top:auto;padding-top:18px;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:22px 0;
  font-size:13px;color:var(--c-muted);
}
.breadcrumb a{color:var(--c-ink-2);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#BFC4CE;}
.breadcrumb .current{color:var(--c-muted);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头 ---------- */
.article-hero{padding:8px 0 40px;}
.article-hero .badge{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--c-primary-050);color:var(--c-primary);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;margin-bottom:18px;
}
.article-hero h1{
  font-size:clamp(24px,3.2vw,34px);line-height:1.3;letter-spacing:.01em;
  max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:18px;font-size:13.5px;color:var(--c-muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C8CCD4;}
.article-cover{
  margin:32px 0 0;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-2);aspect-ratio:16/9;background:var(--c-night);
}
.article-cover img{width:100%;height:100%;object-fit:cover;}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:48px;
  padding:48px 0 24px;
}
.article-main{max-width:820px;width:100%;margin:0 auto;min-width:0;}

/* ---------- 正文排版 ---------- */
.article-body{font-size:16.5px;line-height:1.9;color:var(--c-ink-2);}
.article-body>p{margin:0 0 1.2em;}
.article-body>p:first-of-type{font-size:17.5px;color:var(--c-ink);}
.article-body h2{
  font-size:clamp(19px,2.1vw,23px);color:var(--c-ink);
  margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--c-primary);
  line-height:1.45;
}
.article-body h3{font-size:18px;color:var(--c-ink);margin:28px 0 12px;font-weight:600;}
.article-body h4{font-size:16.5px;color:var(--c-ink);margin:22px 0 10px;font-weight:600;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:4px;}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:8px;line-height:1.8;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;
  width:6px;height:6px;border-radius:50%;background:var(--c-primary);
}
.article-body ol{counter-reset:li;}
.article-body ol li{counter-increment:li;}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.18em;
  font-size:13px;font-weight:700;color:var(--c-primary);
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--c-accent-050);border-left:4px solid var(--c-accent);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--c-ink-2);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:10px;margin:24px 0 10px;width:100%;}
.article-body figcaption,.article-body .caption{
  font-size:13px;color:var(--c-muted);text-align:center;margin-bottom:24px;
}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(226,69,43,.4);transition:border-color .18s ease;}
.article-body a:hover{border-bottom-width:2px;border-bottom-color:var(--c-primary);}
.article-body table{
  width:100%;display:block;overflow-x:auto;border-collapse:collapse;
  margin:24px 0;font-size:14.5px;white-space:nowrap;
}
.article-body thead th{background:var(--c-primary-050);color:var(--c-ink);font-weight:600;}
.article-body th,.article-body td{
  padding:12px 16px;border:1px solid var(--c-line);text-align:left;
}
.article-body code{
  background:#F0EEE9;padding:2px 7px;border-radius:5px;
  font-size:14px;font-family:ui-monospace,Menlo,Consolas,monospace;
}
.article-body pre{
  background:var(--c-night);color:#E8EBF2;padding:20px;border-radius:var(--r-md);
  overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body pre code{background:none;padding:0;color:inherit;}
.article-body hr{border:none;border-top:1px solid var(--c-line);margin:36px 0;}

/* ---------- 侧边目录 ---------- */
.article-aside{display:none;}
.article-aside .toc{
  position:sticky;top:100px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:22px 20px;box-shadow:var(--sh-1);
}
.article-aside .toc h4{
  font-size:13px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--c-muted);font-weight:600;margin-bottom:14px;
}
.article-aside .toc ul li a{
  display:block;font-size:14px;color:var(--c-ink-2);
  padding:7px 0 7px 12px;border-left:2px solid var(--c-line);
  transition:color .18s ease,border-color .18s ease;
}
.article-aside .toc ul li a:hover{color:var(--c-primary);border-left-color:var(--c-primary);}
.article-aside .toc .toc-foot{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--c-line);
  font-size:12.5px;color:var(--c-muted);line-height:1.7;
}

/* ---------- 空态 ---------- */
.empty-state{
  background:var(--c-surface);border:1px dashed var(--c-line);
  border-radius:var(--r-lg);padding:56px 32px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state .empty-icon{
  width:56px;height:56px;border-radius:16px;margin:0 auto 18px;
  display:grid;place-items:center;background:var(--c-accent-050);color:var(--c-accent);
}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--c-muted);font-size:15px;max-width:420px;margin:0 auto 24px;}

/* ---------- 返回入口 ---------- */
.back-actions{
  display:flex;flex-wrap:wrap;justify-content:center;gap:12px;
  margin:44px 0 0;padding-top:36px;border-top:1px solid var(--c-line);
}

/* ---------- 相关推荐卡片 ---------- */
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,minmax(0,1fr));}
.info-card{
  display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:14px;overflow:hidden;box-shadow:var(--sh-2);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#DAD6CE;}
.info-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-night);}
.info-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.info-card:hover .thumb img{transform:scale(1.04);}
.info-card .card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.info-card h3{
  font-size:16.5px;line-height:1.5;color:var(--c-ink);font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card p{
  margin-top:10px;font-size:14px;color:var(--c-muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card .card-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;gap:8px;
  font-size:12.5px;color:var(--c-muted);
}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-pill);background:var(--c-primary-050);
  color:var(--c-primary);font-size:12px;font-weight:600;
}
.tag-accent{background:var(--c-accent-050);color:var(--c-accent);}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#C4361F 0%,#E2452B 55%,#B92F1A 100%);
  border-radius:var(--r-lg);padding:52px 48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--sh-3);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-70px;width:260px;height:260px;
  border-radius:50%;background:rgba(255,255,255,.08);
}
.cta-band h2{font-size:clamp(20px,2.3vw,26px);color:#fff;margin-bottom:10px;}
.cta-band p{font-size:14.5px;color:rgba(255,255,255,.86);max-width:560px;}
.cta-band .privacy-line{margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.72);}
.cta-band .privacy-line a{text-decoration:underline;color:rgba(255,255,255,.9);}
.cta-band .cta-actions{display:flex;flex-direction:column;gap:10px;position:relative;z-index:1;flex-shrink:0;}
.cta-band .btn-white{background:#fff;color:var(--c-primary-600);box-shadow:0 8px 22px rgba(0,0,0,.16);}
.cta-band .btn-white:hover{background:#FDF1EE;transform:translateY(-1px);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-night);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:80px;}
.footer-grid{
  display:grid;gap:40px;grid-template-columns:1.6fr 1fr 1fr 1fr;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.58);max-width:340px;}
.footer-col h4{
  font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;letter-spacing:.04em;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{
  font-size:14px;color:rgba(255,255,255,.62);transition:color .18s ease,padding-left .18s ease;
}
.footer-col ul li a:hover{color:#FF8A70;padding-left:4px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:22px 0 28px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:14px;
  background:var(--c-night);color:#fff;display:grid;place-items:center;
  box-shadow:var(--sh-3);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .25s ease;z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-primary);transform:translateY(-2px);}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 236px;}
  .article-aside{display:block;}
  .article-main{margin:0;}
}
@media (max-width:1024px){
  .section{padding:64px 0;}
  .nav-links a{padding:10px 9px;font-size:14px;}
  .header-cta .btn-ghost{display:none;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .nav-links,.header-cta{display:none;}
  .hamburger{display:flex;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .header-inner{height:66px;}
  .mobile-panel{inset:66px 0 0 0;}
  .logo-text strong{font-size:15px;}
  .article-hero{padding:4px 0 28px;}
  .article-layout{padding:32px 0 16px;gap:32px;}
  .article-body{font-size:16px;}
  .breadcrumb{font-size:12.5px;padding:16px 0;}
  .breadcrumb .current{max-width:100%;white-space:normal;}
  .card-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 24px;gap:24px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .back-actions .btn{width:100%;}
  .to-top{right:16px;bottom:18px;}
}
@media (max-width:520px){
  .article-meta{gap:8px;font-size:12.5px;}
  .article-meta .dot{display:none;}
  .article-meta span{width:100%;}
  .btn{height:46px;padding:0 18px;font-size:14.5px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#E2452B;
  --c-primary-600:#C43A22;
  --c-primary-050:#FDEEEB;
  --c-accent:#1F8A6B;
  --c-accent-050:#E8F4F0;
  --c-star:#E8B44A;
  --c-ink:#161B26;
  --c-ink-2:#3A4356;
  --c-muted:#6B7385;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-night:#101725;
  --c-night-2:#1A2333;
  --c-line:#E6E3DD;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,23,37,.05);
  --sh-2:0 6px 20px rgba(16,23,37,.07);
  --sh-3:0 18px 44px rgba(16,23,37,.12);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
  --font: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(16,23,37,.08);background:rgba(255,255,255,.92);}
.header-inner{display:flex;align-items:center;gap:var(--sp-4);min-height:74px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;background:var(--c-night);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.logo-mark svg{width:22px;height:22px;}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-text strong{font-size:16px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.logo-text span{font-size:11px;color:var(--c-muted);letter-spacing:.14em;text-transform:uppercase;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:var(--sp-5);}
.nav-links a{
  position:relative;
  padding:10px 13px;
  font-size:15px;
  font-weight:500;
  color:var(--c-ink-2);
  border-radius:10px;
}
.nav-links a:hover{color:var(--c-primary-600);background:var(--c-primary-050);}
.nav-links a.is-active{color:var(--c-primary-600);font-weight:700;}
.nav-links a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .16s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 18px rgba(226,69,43,.24);}
.btn-primary:hover{background:var(--c-primary-600);transform:translateY(-1px);box-shadow:0 12px 24px rgba(226,69,43,.28);}
.btn-ghost{background:transparent;color:var(--c-ink-2);border-color:var(--c-line);}
.btn-ghost:hover{background:var(--c-primary-050);color:var(--c-primary-600);border-color:#F3CFC6;}
.btn-light{background:#fff;color:var(--c-primary-600);}
.btn-light:hover{background:#FFF4F1;transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-outline-light:hover{background:rgba(255,255,255,.14);}
.btn-block{width:100%;}
.burger{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;
  align-items:center;justify-content:center;
}
.burger span{display:block;width:22px;height:2px;border-radius:2px;background:var(--c-ink);position:relative;transition:background .2s;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:22px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .22s ease,top .22s ease;}
.burger span::before{top:-7px;}
.burger span::after{top:7px;}
.burger.is-open span{background:transparent;}
.burger.is-open span::before{top:0;transform:rotate(45deg);}
.burger.is-open span::after{top:0;transform:rotate(-45deg);}

.drawer{
  display:none;
  border-top:1px solid var(--c-line);
  background:#fff;
  padding:var(--sp-5) 0 var(--sp-6);
}
.drawer.is-open{display:block;}
.drawer-cta{display:grid;gap:10px;margin-bottom:var(--sp-5);}
.drawer-links{display:grid;gap:2px;border-top:1px solid var(--c-line);padding-top:var(--sp-4);}
.drawer-links a{padding:12px 4px;font-size:15px;font-weight:500;color:var(--c-ink-2);border-bottom:1px solid var(--c-line);}
.drawer-links a.is-active{color:var(--c-primary-600);font-weight:700;}
.drawer-note{margin-top:var(--sp-4);font-size:12px;line-height:1.7;color:var(--c-muted);}

/* ---------- Page head ---------- */
.page-head{
  position:relative;
  padding:var(--sp-8) 0 var(--sp-7);
  background:
    radial-gradient(circle at 12% 20%, rgba(232,180,74,.10), transparent 42%),
    radial-gradient(circle at 88% 8%, rgba(226,69,43,.08), transparent 46%),
    var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(16,23,37,.05) 1px, transparent 1px);
  background-size:22px 22px;
}
.page-head .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:var(--sp-5);}
.breadcrumb a{color:var(--c-ink-2);}
.breadcrumb a:hover{color:var(--c-primary-600);}
.breadcrumb .sep{color:#C9C4BB;}
.breadcrumb .current{color:var(--c-muted);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--c-primary-050);color:var(--c-primary-600);
  font-size:13px;font-weight:600;letter-spacing:.03em;margin-bottom:var(--sp-4);
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:inline-block;}
.page-head h1{
  font-size:clamp(26px,3.4vw,38px);line-height:1.28;font-weight:700;letter-spacing:-.01em;
  max-width:20em;
}
.page-head .lead{
  margin-top:var(--sp-4);max-width:44em;
  font-size:16px;line-height:1.9;color:var(--c-ink-2);
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:var(--sp-5);}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 15px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);
  font-size:13.5px;color:var(--c-ink-2);
}
.tag:hover{border-color:#F3CFC6;color:var(--c-primary-600);}
.tag.is-accent{background:var(--c-accent-050);border-color:#CBE5DC;color:#146B52;}

/* ---------- Sections ---------- */
.section{padding:var(--sp-8) 0;}
.section.alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:46em;margin-bottom:var(--sp-6);}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700;
  padding-left:14px;border-left:4px solid var(--c-primary);margin-bottom:var(--sp-3);
}
.section-head p{color:var(--c-ink-2);font-size:15.5px;}

/* ---------- Feature cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
.data-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-2);
  display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.data-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#EADFD9;}
.thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--c-night);}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease;}
.data-card:hover .thumb img{transform:scale(1.045);}
.thumb .badge{
  position:absolute;left:14px;top:14px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(16,23,37,.78);color:#fff;font-size:12.5px;font-weight:600;letter-spacing:.02em;
  backdrop-filter:blur(4px);
}
.card-body{padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:19px;font-weight:600;line-height:1.45;}
.card-body p{font-size:14.5px;line-height:1.85;color:var(--c-ink-2);}
.mini-list{display:grid;gap:6px;margin-top:2px;}
.mini-list li{position:relative;padding-left:16px;font-size:13.5px;color:var(--c-muted);line-height:1.75;}
.mini-list li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:50%;background:var(--c-star);}
.fit-note{
  margin-top:auto;padding-top:14px;border-top:1px dashed var(--c-line);
  font-size:13.5px;color:var(--c-muted);
}
.fit-note b{color:var(--c-ink-2);font-weight:600;}
.card-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--c-primary-600);}
.card-link:hover{color:var(--c-primary);gap:10px;}

/* ---------- Split ---------- */
.split{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:start;}
.body-text p{font-size:15.5px;line-height:1.9;color:var(--c-ink-2);margin-bottom:18px;max-width:38em;}
.check-list{display:grid;gap:14px;margin-top:var(--sp-5);}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--c-ink-2);}
.check-list .dot{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  background:var(--c-accent-050);color:var(--c-accent);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;margin-top:4px;
}
.dark-panel{
  background:linear-gradient(160deg,var(--c-night) 0%,var(--c-night-2) 100%);
  color:#fff;border-radius:var(--r-xl);padding:34px 32px;box-shadow:var(--sh-3);
}
.dark-panel h3{font-size:18px;font-weight:600;letter-spacing:.01em;margin-bottom:6px;}
.dark-panel .panel-sub{font-size:13.5px;color:rgba(255,255,255,.62);margin-bottom:12px;}
.filter-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.12);}
.filter-row:last-of-type{border-bottom:0;}
.filter-row .k{font-size:15px;font-weight:600;}
.filter-row .v{font-size:13px;color:rgba(255,255,255,.66);text-align:right;}
.panel-foot{margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12);font-size:12.5px;line-height:1.75;color:rgba(255,255,255,.6);}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}
.step{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:26px 22px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.step .num{font-size:26px;font-weight:700;color:var(--c-primary);letter-spacing:.02em;line-height:1;}
.step h3{font-size:16.5px;font-weight:600;margin:14px 0 8px;}
.step p{font-size:14px;line-height:1.8;color:var(--c-muted);}

/* ---------- Scene cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.scene{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:26px 24px;border-left:3px solid var(--c-accent);
}
.scene h3{font-size:16.5px;font-weight:600;margin-bottom:8px;}
.scene p{font-size:14px;line-height:1.8;color:var(--c-muted);}

/* ---------- CTA band ---------- */
.cta-wrap{padding:0 0 var(--sp-8);}
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-primary);color:#fff;
  border-radius:var(--r-xl);padding:var(--sp-7) var(--sp-7);
  display:flex;flex-wrap:wrap;align-items:center;gap:var(--sp-6);
  box-shadow:0 20px 48px rgba(226,69,43,.22);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:rgba(232,180,74,.18);pointer-events:none;
}
.cta-band .cta-copy{flex:1 1 380px;position:relative;z-index:1;}
.cta-band h2{font-size:clamp(21px,2.4vw,27px);font-weight:700;line-height:1.4;margin-bottom:10px;}
.cta-band p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.88);max-width:36em;}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;}
.cta-privacy{
  flex:1 1 100%;font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.78);
  border-top:1px solid rgba(255,255,255,.28);padding-top:16px;
}
.cta-privacy a{color:#fff;border-bottom:1px solid rgba(255,255,255,.6);}
.cta-privacy a:hover{border-bottom-width:2px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-night);color:rgba(255,255,255,.72);padding:var(--sp-8) 0 var(--sp-5);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:30em;}
.site-footer .logo-text strong{color:#fff;}
.site-footer .logo-text span{color:rgba(255,255,255,.45);}
.footer-col h4{font-size:14.5px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:#FF8B72;}
.footer-bottom{
  margin-top:var(--sp-7);padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.5);
}

/* ---------- Back to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:24px;z-index:70;
  width:46px;height:46px;border-radius:14px;
  background:var(--c-night);color:#fff;box-shadow:var(--sh-3);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-primary);}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .nav-links{margin-left:var(--sp-4);}
  .nav-links a{padding:10px 10px;font-size:14.5px;}
  .split{grid-template-columns:1fr;gap:36px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .nav-links{display:none;}
  .nav-actions{display:none;}
  .burger{display:flex;margin-left:auto;}
  .header-inner{min-height:66px;}
  .section{padding:64px 0;}
  .page-head{padding:56px 0 48px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .card-grid{grid-template-columns:1fr;gap:22px;}
  .scene-grid{grid-template-columns:1fr;gap:18px;}
  .cta-band{padding:34px 24px;gap:24px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{flex:1 1 180px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .dark-panel{padding:28px 22px;}
  .logo-text strong{font-size:15px;}
}
@media (max-width:520px){
  .section{padding:48px 0;}
  .page-head{padding:44px 0 40px;}
  .page-head .lead{font-size:15px;}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .section-head h2{font-size:22px;}
  .btn{height:46px;}
  .to-top{right:14px;bottom:16px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#E2452B;
  --c-primary-600:#C3361F;
  --c-primary-050:#FDECE8;
  --c-accent:#1F8A6B;
  --c-accent-050:#E7F4F0;
  --c-star:#E8B44A;
  --c-ink:#161B26;
  --c-ink-2:#3A4356;
  --c-muted:#6B7385;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-night:#101725;
  --c-line:#E6E3DD;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,23,37,.05);
  --sh-2:0 6px 20px rgba(16,23,37,.07);
  --sh-3:0 18px 44px rgba(16,23,37,.12);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:80px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--sp-5);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-600);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-line);}
.btn-ghost:hover{background:var(--c-primary-050);border-color:var(--c-primary);color:var(--c-primary-600);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-light{background:#fff;color:var(--c-primary-600);}
.btn-light:hover{background:#FFF3F0;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-sm{height:44px;padding:0 22px;}
.btn-block{width:100%;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary-600);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.btn-link:hover{border-bottom-color:var(--c-primary-600);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-050);color:var(--c-primary-600);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:var(--c-accent-050);color:var(--c-accent);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:var(--c-surface);
  font-size:13px;color:var(--c-ink-2);
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-6);height:74px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-night);
}
.logo-mark svg{width:22px;height:22px;}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-text strong{font-size:16px;font-weight:700;letter-spacing:.01em;color:var(--c-ink);}
.logo-text span{font-size:11px;color:var(--c-muted);letter-spacing:.12em;text-transform:uppercase;}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{
  position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;border-radius:2px;
  background:transparent;transition:background-color .2s ease;
}
.nav-links a:hover{color:var(--c-primary-600);}
.nav-links a:hover::after{background:var(--c-primary-050);}
.nav-links a.is-active{color:var(--c-ink);font-weight:600;}
.nav-links a.is-active::after{background:var(--c-primary);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  background:var(--c-surface);cursor:pointer;padding:0;
  align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--c-primary);background:var(--c-primary-050);}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px;position:relative;transition:background .2s ease;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .25s ease,top .25s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg);}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg);}
.mobile-drawer{
  display:none;position:fixed;left:0;right:0;top:74px;bottom:0;z-index:70;
  background:var(--c-surface);padding:var(--sp-5);
  flex-direction:column;gap:var(--sp-4);overflow-y:auto;
  border-top:1px solid var(--c-line);
}
.mobile-drawer.is-open{display:flex;}
.mobile-drawer .btn{width:100%;}
.mobile-links{display:flex;flex-direction:column;gap:2px;margin-top:6px;}
.mobile-links a{
  padding:14px 4px;font-size:16px;color:var(--c-ink-2);border-bottom:1px solid var(--c-line);
}
.mobile-links a.is-active{color:var(--c-primary-600);font-weight:600;}
.drawer-note{font-size:12.5px;color:var(--c-muted);line-height:1.7;margin-top:auto;padding-top:var(--sp-4);}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:var(--sp-5) 0 0;font-size:13px;color:var(--c-muted);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li::after{content:"›";margin-left:8px;color:var(--c-line);}
.breadcrumb li:last-child::after{display:none;}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary-600);}
.breadcrumb .current{color:var(--c-ink-2);}

/* ---------- 页面头部：左文右表单 ---------- */
.page-head{padding:var(--sp-6) 0 var(--sp-8);}
.split{
  display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);
  gap:var(--sp-8);align-items:start;margin-top:var(--sp-5);
}
.page-head h1{
  font-size:clamp(28px,4vw,42px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
  margin:var(--sp-4) 0 0;
}
.lead{font-size:17px;line-height:1.85;color:var(--c-ink-2);margin-top:var(--sp-4);max-width:36em;}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:var(--sp-6);}

.check-list{margin-top:var(--sp-6);border-top:1px solid var(--c-line);}
.check-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--c-line);
}
.check-list .num{
  flex:0 0 34px;height:34px;border-radius:10px;background:var(--c-primary-050);
  color:var(--c-primary-600);font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;letter-spacing:.04em;
}
.check-list h3{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:2px;}
.check-list p{font-size:14.5px;color:var(--c-muted);line-height:1.75;}

/* ---------- 表单 ---------- */
.form-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:var(--sp-6);box-shadow:var(--sh-2);position:sticky;top:96px;
}
.form-card h2{font-size:20px;font-weight:700;line-height:1.4;}
.form-card .form-sub{font-size:14px;color:var(--c-muted);margin-top:6px;line-height:1.7;}
.form-grid{margin-top:var(--sp-5);display:flex;flex-direction:column;gap:var(--sp-4);}
.field label{
  display:block;font-size:13.5px;font-weight:600;color:var(--c-ink-2);margin-bottom:7px;
}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;font-size:15px;font-family:inherit;color:var(--c-ink);
  background:var(--c-bg);border:1px solid var(--c-line);border-radius:10px;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--c-muted) 50%),linear-gradient(135deg,var(--c-muted) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input::placeholder,.field textarea::placeholder{color:#A3A9B6;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:var(--c-surface);border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(226,69,43,.14);
}
.field .err{display:none;font-size:12px;color:#D92D20;margin-top:6px;}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#D92D20;}
.field.has-error .err{display:block;}
.privacy-note{font-size:12.5px;line-height:1.75;color:var(--c-muted);margin-top:var(--sp-4);}
.privacy-note a{color:var(--c-primary-600);border-bottom:1px solid rgba(226,69,43,.35);}
.privacy-note a:hover{border-bottom-color:var(--c-primary-600);}
.form-success{
  display:none;align-items:flex-start;gap:12px;margin-top:var(--sp-4);
  padding:14px 16px;border-radius:var(--r-md);background:var(--c-accent-050);
  border:1px solid rgba(31,138,107,.25);
}
.form-success.is-visible{display:flex;}
.form-success svg{flex:0 0 22px;width:22px;height:22px;margin-top:2px;}
.form-success p{font-size:14px;color:#15654E;line-height:1.7;}

/* ---------- 板块通用 ---------- */
.section{padding:var(--sp-9) 0;}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-night{background:var(--c-night);color:#fff;}
.section-head{max-width:720px;}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700;
  padding-left:16px;position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--c-primary);
}
.section-head p{margin-top:var(--sp-4);color:var(--c-muted);font-size:16px;line-height:1.85;}

/* ---------- 场景卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--sp-5);margin-top:var(--sp-7);}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#DCD8D0;}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--c-night);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:var(--sp-5);display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18px;font-weight:600;line-height:1.4;}
.card-body p{font-size:14.5px;color:var(--c-muted);line-height:1.8;}
.card-body .btn-link{margin-top:auto;}

/* ---------- 清单面板 ---------- */
.panel-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:var(--sp-6);margin-top:var(--sp-7);}
.panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:var(--sp-6);box-shadow:var(--sh-1);
}
.panel h3{font-size:19px;font-weight:600;margin-bottom:var(--sp-4);}
.panel ul{display:flex;flex-direction:column;gap:14px;}
.panel li{display:flex;gap:12px;font-size:15px;color:var(--c-ink-2);line-height:1.8;}
.panel li::before{
  content:"";flex:0 0 8px;width:8px;height:8px;margin-top:10px;border-radius:50%;background:var(--c-accent);
}
.panel-warn li::before{background:var(--c-primary);}

/* ---------- 深色数据 / 说明带 ---------- */
.fact-band{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--sp-6);margin-top:var(--sp-7);}
.fact{padding:var(--sp-5);border-radius:var(--r-lg);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);}
.fact strong{display:block;font-size:30px;font-weight:700;color:var(--c-star);line-height:1.2;}
.fact span{display:block;margin-top:8px;font-size:14px;color:rgba(255,255,255,.78);line-height:1.7;}
.band-note{margin-top:var(--sp-6);font-size:12.5px;color:rgba(255,255,255,.6);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq{margin-top:var(--sp-7);border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{margin:0;}
.faq-q button{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);
  padding:20px 4px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
  transition:color .2s ease;
}
.faq-q button:hover{color:var(--c-primary-600);}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--c-line);position:relative;transition:transform .25s ease,background-color .25s ease,border-color .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--c-ink-2);border-radius:2px;transition:background-color .25s ease,opacity .25s ease;
}
.faq-icon::before{width:11px;height:1.6px;}
.faq-icon::after{width:1.6px;height:11px;}
.faq-q button[aria-expanded="true"] .faq-icon{background:var(--c-primary);border-color:var(--c-primary);transform:rotate(180deg);}
.faq-q button[aria-expanded="true"] .faq-icon::before{background:#fff;}
.faq-q button[aria-expanded="true"] .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-a p{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--c-ink-2);max-width:56em;}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-primary-600) 100%);
  color:#fff;padding:var(--sp-8) 0;
}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--sp-6);}
.cta-inner h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.4;}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.88);line-height:1.8;max-width:44em;}
.cta-note{margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.75);}
.cta-inner .btn{flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-night);color:rgba(255,255,255,.72);padding:var(--sp-8) 0 var(--sp-5);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:var(--sp-7);}
.footer-brand .logo{margin-bottom:var(--sp-4);}
.footer-brand .logo-text strong{color:#fff;}
.footer-brand .logo-text span{color:rgba(255,255,255,.45);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:32em;}
.footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:var(--sp-4);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:#FF7A5E;}
.footer-bottom{
  margin-top:var(--sp-7);padding-top:var(--sp-5);border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.5);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:60;
  width:46px;height:46px;border-radius:50%;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-ink-2);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease,transform .2s ease,background-color .2s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary);transform:translateY(-2px);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-actions{display:none;}
  .nav-toggle{display:flex;}
  .split{grid-template-columns:1fr;gap:var(--sp-7);}
  .form-card{position:static;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .panel-grid{grid-template-columns:1fr;}
  .fact-band{grid-template-columns:1fr;gap:var(--sp-4);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-6);}
  .section{padding:64px 0;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .nav-inner{height:66px;}
  .mobile-drawer{top:66px;}
  .page-head{padding:var(--sp-5) 0 var(--sp-7);}
  .card-grid{grid-template-columns:1fr;}
  .head-actions .btn{width:100%;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-inner .btn{width:100%;}
  .section{padding:48px 0;}
  .footer-grid{grid-template-columns:1fr;gap:var(--sp-6);}
  .footer-bottom{flex-direction:column;gap:6px;}
  .form-card{padding:var(--sp-5);}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:420px){
  .logo-text strong{font-size:15px;}
  .logo-text span{font-size:10px;letter-spacing:.08em;}
  .check-list .num{flex-basis:30px;height:30px;font-size:12px;}
  .faq-q button{font-size:15px;padding:18px 2px;}
}

/* roulang page: category4 */
:root{
  --c-primary:#E2452B;
  --c-primary-600:#C3351E;
  --c-primary-050:#FDEDE9;
  --c-accent:#1F8A6B;
  --c-accent-050:#E9F4F0;
  --c-star:#E8B44A;
  --c-star-050:#FBF4E3;
  --c-ink:#161B26;
  --c-ink-2:#3A4356;
  --c-muted:#6B7385;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-night:#101725;
  --c-night-2:#1A2233;
  --c-line:#E6E3DD;

  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;

  --sh-1:0 1px 2px rgba(16,23,37,.05);
  --sh-2:0 6px 20px rgba(16,23,37,.07);
  --sh-3:0 18px 44px rgba(16,23,37,.12);

  --s-1:4px;
  --s-2:8px;
  --s-3:12px;
  --s-4:16px;
  --s-5:24px;
  --s-6:32px;
  --s-7:48px;
  --s-8:64px;
  --s-9:96px;

  --maxw:1200px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  background-color:var(--c-bg);
  background-image:radial-gradient(rgba(16,23,37,.035) 1px,transparent 1px);
  background-size:22px 22px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;}
h1{font-size:clamp(28px,4vw,44px);line-height:1.25;}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;}
h3{font-size:19px;line-height:1.4;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease,opacity .2s ease;}
img{max-width:100%;display:block;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:var(--r-sm);}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(1.2) blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);background:rgba(255,255,255,.96);}
.header-inner{display:flex;align-items:center;gap:var(--s-5);height:74px;}

.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(150deg,var(--c-night) 0%,var(--c-night-2) 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.logo-mark svg{width:22px;height:22px;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:16px;color:var(--c-ink);letter-spacing:.01em;}
.logo-text span{font-size:11px;color:var(--c-muted);letter-spacing:.08em;text-transform:uppercase;}

.nav-links{display:flex;align-items:center;gap:var(--s-5);margin-left:var(--s-4);flex:1;}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:74px;
  font-size:15px;
  color:var(--c-ink-2);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:18px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .22s ease;
}
.nav-links a:hover{color:var(--c-ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--c-ink);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}

.nav-actions{display:flex;align-items:center;gap:var(--s-3);flex-shrink:0;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(226,69,43,.24);}
.btn-primary:hover{background:var(--c-primary-600);box-shadow:0 10px 24px rgba(226,69,43,.28);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-line);}
.btn-ghost:hover{background:var(--c-primary-050);border-color:var(--c-primary);color:var(--c-primary-600);}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-050);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none;}

.hamburger{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  border-radius:10px;
  background:var(--c-surface);
  align-items:center;justify-content:center;
  cursor:pointer;
}
.hamburger span{display:block;width:22px;height:2px;background:var(--c-ink);border-radius:2px;position:relative;transition:.25s;}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:22px;height:2px;background:var(--c-ink);border-radius:2px;transition:.25s;
}
.hamburger span::before{top:-7px;}
.hamburger span::after{top:7px;}
.hamburger.is-open span{background:transparent;}
.hamburger.is-open span::before{top:0;transform:rotate(45deg);}
.hamburger.is-open span::after{top:0;transform:rotate(-45deg);}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--c-line);
  background:var(--c-surface);
  padding:20px 24px 24px;
  box-shadow:var(--sh-3);
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .drawer-cta{display:grid;gap:10px;margin-bottom:18px;}
.mobile-drawer .drawer-links{display:grid;gap:2px;margin-bottom:16px;}
.mobile-drawer .drawer-links a{
  display:flex;align-items:center;height:46px;
  padding:0 12px;
  border-radius:10px;
  color:var(--c-ink-2);
  font-size:15px;
}
.mobile-drawer .drawer-links a:hover{background:var(--c-bg);color:var(--c-ink);}
.mobile-drawer .drawer-links a.is-active{background:var(--c-primary-050);color:var(--c-primary-600);font-weight:600;}
.drawer-note{font-size:12px;color:var(--c-muted);line-height:1.7;}

/* ============ 通用板块 ============ */
.section{padding:80px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--c-bg);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-night{background:linear-gradient(160deg,var(--c-night) 0%,var(--c-night-2) 100%);color:#D7DCE6;}
.section-night h2,.section-night h3{color:#fff;}

.section-head{max-width:760px;margin-bottom:var(--s-6);}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-title{position:relative;padding-left:14px;}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--c-primary);
}
.section-head.center .section-title{padding-left:0;}
.section-head.center .section-title::before{display:none;}
.section-sub{margin-top:12px;font-size:15px;color:var(--c-muted);line-height:1.85;}
.section-night .section-sub{color:#A6AFC0;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  font-size:13px;font-weight:600;line-height:1.6;
  background:var(--c-primary-050);
  color:var(--c-primary-600);
}
.badge--accent{background:var(--c-accent-050);color:var(--c-accent);}
.badge--star{background:var(--c-star-050);color:#8A6413;}
.badge--line{background:var(--c-surface);color:var(--c-ink-2);border:1px solid var(--c-line);}

/* ============ 面包屑 ============ */
.breadcrumb{padding:12px 0;font-size:13px;color:var(--c-muted);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb li[aria-current]{color:var(--c-ink-2);font-weight:600;}
.breadcrumb .sep{color:#B9BCC4;}

/* ============ 紧凑头部 ============ */
.page-hero{padding:8px 0 64px;}
.page-hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
  gap:var(--s-8);
  align-items:center;
}
.page-hero h1{margin:18px 0 16px;}
.page-hero .lead{font-size:16px;color:var(--c-ink-2);max-width:38em;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-3);
  border:1px solid var(--c-line);
  background:var(--c-surface);
}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-media .media-caption{
  position:absolute;left:16px;bottom:16px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:rgba(16,23,37,.72);
  color:#fff;font-size:13px;font-weight:600;
  backdrop-filter:blur(4px);
}

/* ============ 步骤轴 ============ */
.timeline{position:relative;margin-top:var(--s-6);}
.timeline::before{
  content:"";position:absolute;left:23px;top:16px;bottom:36px;width:2px;background:var(--c-line);
}
.tl-item{position:relative;display:grid;grid-template-columns:48px minmax(0,1fr);gap:22px;padding-bottom:32px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:relative;z-index:1;
  width:48px;height:48px;border-radius:50%;
  background:var(--c-surface);
  border:2px solid var(--c-primary);
  color:var(--c-primary-600);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;
  box-shadow:var(--sh-1);
}
.tl-body{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:24px 26px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .25s ease,border-color .2s ease;
}
.tl-body:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#DAD5CD;}
.tl-body h3{margin-bottom:10px;}
.tl-body p{font-size:15px;color:var(--c-ink-2);}
.tl-list{margin-top:16px;display:grid;gap:8px;}
.tl-list li{position:relative;padding-left:22px;font-size:14px;color:var(--c-muted);}
.tl-list li::before{
  content:"";position:absolute;left:4px;top:11px;
  width:6px;height:6px;border-radius:50%;background:var(--c-accent);
}
.tl-tag{margin-top:18px;display:inline-flex;}

/* ============ 图文块 ============ */
.split{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:var(--s-8);align-items:center;}
.split-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-2);background:var(--c-surface);
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.check-list{display:grid;gap:14px;margin-top:22px;}
.check-list li{
  display:grid;grid-template-columns:24px minmax(0,1fr);gap:12px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:14px 18px;
  font-size:15px;
  color:var(--c-ink-2);
  box-shadow:var(--sh-1);
}
.check-list .tick{
  width:22px;height:22px;border-radius:50%;
  background:var(--c-accent-050);color:var(--c-accent);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;margin-top:2px;
}
.check-list strong{color:var(--c-ink);font-weight:600;}

/* ============ 状态卡 ============ */
.status-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:var(--s-6);}
.status-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:26px 24px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .25s ease;
}
.status-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.status-card h3{font-size:17px;margin:16px 0 8px;}
.status-card p{font-size:14px;color:var(--c-muted);}
.status-card .status-dot{
  width:12px;height:12px;border-radius:50%;
  display:inline-block;margin-right:8px;
}
.dot-star{background:var(--c-star);}
.dot-primary{background:var(--c-primary);}
.dot-accent{background:var(--c-accent);}

/* ============ FAQ ============ */
.faq-list{margin-top:var(--s-6);border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--c-primary-600);}
.faq-icon{
  flex-shrink:0;
  width:30px;height:30px;border-radius:50%;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:17px;line-height:1;
  transition:transform .25s ease,background-color .2s ease,color .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease;
}
.faq-a-inner{padding:0 4px 24px;font-size:15px;color:var(--c-ink-2);max-width:60em;}
.faq-a-inner p+p{margin-top:12px;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  color:#fff;
  background-color:var(--c-primary);
  background-image:linear-gradient(120deg,rgba(226,69,43,.95) 0%,rgba(16,23,37,.92) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-radius:var(--r-lg);
  padding:56px 48px;
  overflow:hidden;
  box-shadow:var(--sh-3);
}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.86);font-size:15px;max-width:44em;}
.cta-band-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:28px;}
.cta-band .btn-primary{background:#fff;color:var(--c-primary-600);box-shadow:none;}
.cta-band .btn-primary:hover{background:#F3F1EC;color:var(--c-primary-600);}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.42);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff;}
.privacy-note{margin-top:18px;font-size:13px;color:rgba(255,255,255,.72);line-height:1.7;}
.privacy-note a{color:#fff;border-bottom:1px solid rgba(255,255,255,.5);}
.privacy-note a:hover{border-bottom-color:#fff;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-night);color:#9BA4B5;padding:64px 0 0;margin-top:0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.site-footer .logo-text strong{color:#fff;}
.site-footer .logo-text span{color:#7C8699;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.9;max-width:34em;color:#9BA4B5;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{font-size:14px;color:#9BA4B5;}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);
  padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7C8699;
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-ink);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);
  cursor:pointer;
  opacity:0;visibility:hidden;
  transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background-color .2s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .header-inner{gap:16px;}
  .nav-links{gap:18px;}
  .nav-links a{font-size:14px;}
  .nav-actions .btn-ghost{display:none;}
}
@media (max-width:1024px){
  .section{padding:64px 0;}
  .page-hero{padding-bottom:48px;}
  .page-hero-grid{grid-template-columns:1fr;gap:36px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .status-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .nav-links,.nav-actions .btn-ghost{display:none;}
  .nav-links{display:none;}
  .nav-actions{gap:10px;}
  .hamburger{display:inline-flex;}
  .logo-text span{display:none;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section-tight{padding:40px 0;}
  .cta-band{padding:40px 24px;border-radius:var(--r-md);}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .hero-media img{aspect-ratio:16/11;}
  .status-grid{grid-template-columns:1fr;}
  .tl-item{grid-template-columns:40px minmax(0,1fr);gap:16px;}
  .tl-dot{width:40px;height:40px;font-size:14px;}
  .timeline::before{left:19px;}
  .tl-body{padding:20px;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:520px){
  h1{font-size:26px;}
  .header-inner{height:64px;}
  .nav-links a{height:64px;}
  .logo-text strong{font-size:15px;}
  .btn{height:44px;padding:0 18px;font-size:14px;}
  .hero-actions .btn{width:100%;}
  .cta-band-actions .btn{width:100%;}
  .faq-q{font-size:15px;padding:18px 0;}
}