/* roulang page: index */
:root{
  --ink-900:#14112B;--ink-700:#241E45;--ink-500:#3A3268;
  --brand-600:#4B3FA8;--brand-500:#6558D6;--brand-200:#CFC8F5;--brand-100:#EDEAFF;
  --signal-500:#17C3A2;--accent-500:#FFB03A;
  --paper:#FBF9FF;--paper-2:#F3F0FA;--line:#E4DFF2;
  --text:#1F1B33;--muted:#6A6483;
  --r-card:16px;--r-img:12px;--r-btn:10px;
  --sh-1:0 1px 2px rgba(20,17,43,.06);
  --sh-2:0 12px 28px -12px rgba(20,17,43,.18);
  --sec-y:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-500)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--signal-500);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;padding-left:20px;padding-right:20px}
@media (min-width:1400px){.container{max-width:1240px}}
.sk-num{font-variant-numeric:tabular-nums}

/* ---------- 顶部信息条 ---------- */
.sk-topbar{background:var(--ink-900);color:rgba(255,255,255,.78);font-size:13px;line-height:1.5}
.sk-topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px}
.sk-topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.sk-domain{color:#fff;font-weight:600;letter-spacing:.04em;font-variant-numeric:tabular-nums}
.sk-topbar-tip{color:rgba(255,255,255,.62);white-space:nowrap}
.sk-topbar-right{display:flex;align-items:center;gap:16px;flex-shrink:0}
.sk-topbar-link{color:rgba(255,255,255,.78)}
.sk-topbar-link:hover{color:var(--signal-500)}
.sk-topbar-btn{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  border:1px solid rgba(255,255,255,.34);color:#fff;font-size:13px;line-height:1.4;
  transition:background .18s ease,border-color .18s ease;
}
.sk-topbar-btn:hover{background:rgba(255,255,255,.10);border-color:var(--signal-500);color:#fff}

/* ---------- 主导航 ---------- */
.sk-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease;
}
.sk-header.is-stuck{border-bottom:1px solid var(--line);box-shadow:0 4px 16px -10px rgba(20,17,43,.22)}
.sk-nav{display:flex;align-items:center;gap:24px;min-height:64px}
.sk-logo{display:flex;flex-direction:column;justify-content:center;line-height:1.15;flex-shrink:0}
.sk-logo-main{font-size:21px;font-weight:700;color:var(--ink-900);letter-spacing:.01em}
.sk-logo-sub{font-size:12px;color:var(--muted);margin-top:3px;letter-spacing:.08em}
.sk-logo:hover .sk-logo-main{color:var(--brand-600)}
.sk-nav-list{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto}
.sk-nav-list a{
  position:relative;display:inline-flex;align-items:center;
  padding:0 14px;height:64px;font-size:15px;color:var(--ink-500);
}
.sk-nav-list a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:3px;border-radius:2px;
  background:var(--signal-500);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.sk-nav-list a:hover{color:var(--brand-600)}
.sk-nav-list a:hover::after{transform:scaleX(1)}
.sk-nav-list a.is-active{color:var(--brand-600);font-weight:600}
.sk-nav-list a.is-active::after{
  transform:scaleX(1);background:var(--brand-600);height:2px;bottom:0;left:14px;right:14px;
}
.sk-nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.sk-burger{
  display:none;align-items:center;justify-content:center;width:42px;height:42px;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-700);
}
.sk-burger:hover{border-color:var(--brand-200);background:var(--brand-100)}

/* ---------- 按钮 ---------- */
.sk-btn-main,.sk-btn-line,.sk-btn-signal{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;line-height:1.4;cursor:pointer;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.sk-btn-main{
  padding:12px 28px;background:var(--brand-600);color:#fff;border:1px solid var(--brand-600);font-size:15px;
}
.sk-btn-main:hover{background:var(--brand-500);border-color:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.sk-btn-main:active{transform:translateY(0)}
.sk-btn-line{
  padding:12px 26px;background:transparent;color:var(--brand-600);border:1px solid var(--brand-200);font-size:15px;
}
.sk-btn-line:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-600)}
.sk-btn-signal{
  padding:12px 28px;background:var(--signal-500);color:var(--ink-900);border:1px solid var(--signal-500);font-size:15px;
}
.sk-btn-signal:hover{background:#12b194;border-color:#12b194;color:var(--ink-900);transform:translateY(-1px)}
.sk-btn-sm{padding:8px 18px;font-size:14px}
.sk-link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-600);font-size:15px}
.sk-link-arrow svg{transition:transform .18s ease}
.sk-link-arrow:hover{color:var(--brand-600);text-decoration:underline;text-decoration-color:var(--signal-500);text-underline-offset:4px}
.sk-link-arrow:hover svg{transform:translateX(3px)}

/* ---------- 通用板块 ---------- */
.sk-section{padding-top:var(--sec-y);padding-bottom:var(--sec-y)}
.sk-section-alt{background:var(--paper-2)}
.sk-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.sk-h2{position:relative;padding-left:16px;font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700;color:var(--ink-900)}
.sk-h2::before{content:"";position:absolute;left:0;top:calc(50% - 10px);width:4px;height:20px;border-radius:2px;background:var(--brand-600)}
.sk-h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink-900)}
.sk-sub{color:var(--muted);font-size:15px;margin-top:10px}
.sk-lead{color:var(--muted);font-size:16px;line-height:1.8}

/* ---------- Hero ---------- */
.sk-hero{position:relative;background:var(--paper);padding-top:58px;padding-bottom:64px;overflow:hidden}
.sk-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 88% 8%,rgba(101,88,214,.10),transparent 48%),
             radial-gradient(circle at 4% 92%,rgba(23,195,162,.08),transparent 46%);
  pointer-events:none;
}
.sk-hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.sk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-600);font-size:13px;font-weight:600;
}
.sk-eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--signal-500);box-shadow:0 0 0 3px rgba(23,195,162,.18)}
.sk-hero h1{
  margin-top:20px;font-size:clamp(30px,4.2vw,44px);line-height:1.25;font-weight:700;
  color:var(--ink-900);letter-spacing:0;
}
.sk-hero-desc{margin-top:18px;font-size:17px;line-height:1.85;color:var(--muted);max-width:560px}
.sk-hero-cta{display:flex;align-items:center;gap:14px;margin-top:30px;flex-wrap:wrap}
.sk-hero-trust{display:flex;gap:26px;margin-top:32px;flex-wrap:wrap}
.sk-trust-item{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--ink-500)}
.sk-trust-item svg{color:var(--signal-500);flex-shrink:0}
.sk-hero-media{position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-2)}
.sk-hero-media img{width:100%;height:auto;aspect-ratio:16/11;object-fit:cover}
.sk-hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(20,17,43,.55),rgba(20,17,43,.10));
}
.sk-hero-media figcaption{
  position:absolute;left:18px;bottom:16px;z-index:2;color:#fff;font-size:13px;
  background:rgba(20,17,43,.42);padding:6px 12px;border-radius:999px;
}
.sk-stats{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  margin-top:44px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
}
.sk-stat{background:#fff;padding:22px 22px}
.sk-stat-num{font-size:26px;font-weight:700;color:var(--brand-600);line-height:1.2;font-variant-numeric:tabular-nums}
.sk-stat-label{margin-top:6px;font-size:13px;color:var(--muted)}

/* ---------- 优惠阶梯 ---------- */
.sk-ladder{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;position:relative}
.sk-ladder-item{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.sk-ladder-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-200)}
.sk-ladder-item.is-recommend{border-color:var(--accent-500);box-shadow:0 0 0 1px var(--accent-500),var(--sh-2)}
.sk-ladder-no{
  display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;
  background:var(--brand-100);color:var(--brand-600);font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
}
.sk-ladder-item h3{margin-top:16px;font-size:18px;font-weight:600;color:var(--ink-900)}
.sk-ladder-item p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--muted)}
.sk-ladder-price{margin-top:16px;font-size:15px;color:var(--ink-500);font-variant-numeric:tabular-nums}
.sk-ladder-price strong{font-size:24px;color:var(--brand-600);font-weight:700;margin-right:4px}
.sk-ladder-item::after{
  content:"";position:absolute;right:-16px;top:50%;width:10px;height:10px;
  border-top:1.5px solid var(--brand-200);border-right:1.5px solid var(--brand-200);
  transform:translateY(-50%) rotate(45deg);
}
.sk-ladder-item:last-child::after{display:none}
.sk-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-600);font-size:13px;font-weight:600;line-height:1;
}
.sk-badge-accent{background:var(--accent-500);color:var(--ink-900)}

/* ---------- 套餐对比 ---------- */
.sk-table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:#fff;
  box-shadow:var(--sh-1);position:relative;
}
.sk-compare{width:100%;min-width:820px;border-collapse:collapse;font-size:15px}
.sk-compare th,.sk-compare td{padding:16px 20px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.sk-compare thead th{font-size:15px;font-weight:600;color:var(--ink-900);background:#fff;border-bottom:1px solid var(--line)}
.sk-compare tbody th{
  font-weight:600;color:var(--ink-500);font-size:14px;background:var(--paper-2);
  position:sticky;left:0;z-index:2;width:150px;min-width:150px;
}
.sk-compare td{color:var(--ink-500);font-size:14.5px;line-height:1.75}
.sk-compare .col-pick{background:var(--brand-100);border-top:2px solid var(--brand-500)}
.sk-compare thead .col-pick{background:var(--brand-100);border-top:2px solid var(--brand-500);border-radius:12px 12px 0 0}
.sk-compare .price{font-size:22px;font-weight:700;color:var(--brand-600);font-variant-numeric:tabular-nums}
.sk-compare .price span{font-size:13px;font-weight:400;color:var(--muted);margin-left:4px}
.sk-compare tbody tr:last-child th,.sk-compare tbody tr:last-child td{border-bottom:0}
.sk-tip-scroll{margin-top:10px;font-size:13px;color:var(--muted);display:none}

/* ---------- 深色限时条 ---------- */
.sk-flash{
  position:relative;border-radius:var(--r-card);overflow:hidden;padding:36px 40px;
  color:#fff;display:grid;grid-template-columns:auto 1fr;gap:36px;align-items:center;
  background:
    radial-gradient(circle at 12% 22%,rgba(255,255,255,.055) 0 1.2px,transparent 1.4px),
    radial-gradient(circle at 46% 66%,rgba(255,255,255,.045) 0 1px,transparent 1.3px),
    radial-gradient(circle at 78% 28%,rgba(255,255,255,.05) 0 1px,transparent 1.3px),
    linear-gradient(160deg,#14112B 0%,#241E45 55%,#2E2560 100%);
}
.sk-countdown{display:flex;align-items:center;gap:10px}
.sk-count-cell{
  width:66px;padding:12px 0;border-radius:12px;text-align:center;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);
}
.sk-count-cell b{display:block;font-size:24px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.1}
.sk-count-cell span{display:block;margin-top:4px;font-size:12px;color:rgba(255,255,255,.62)}
.sk-count-sep{color:rgba(255,255,255,.4);font-size:20px;font-weight:700}
.sk-flash-body{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.sk-flash-body h3{font-size:20px;font-weight:600;color:#fff}
.sk-flash-body p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.72)}
.sk-flash-note{margin-top:14px;font-size:13px;color:rgba(255,255,255,.55)}

/* ---------- 内容卡片 ---------- */
.sk-card{
  display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;color:inherit;
}
.sk-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-200);color:inherit}
.sk-card-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--paper-2)}
.sk-card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.sk-card:hover .sk-card-thumb img{transform:scale(1.04)}
.sk-card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.sk-card-title{
  margin-top:12px;font-size:17px;line-height:1.5;font-weight:600;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.sk-card-desc{
  margin-top:10px;font-size:14px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.sk-card-meta{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted)}
.sk-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  padding:56px 24px;border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;
  color:var(--muted);font-size:14px;text-align:center;
}
.sk-empty svg{color:var(--brand-200)}

/* ---------- 登录步骤 ---------- */
.sk-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;position:relative}
.sk-step{position:relative;padding:24px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1)}
.sk-step:nth-child(even){transform:translateY(16px)}
.sk-step-no{font-size:28px;font-weight:700;line-height:1;color:var(--brand-200);font-variant-numeric:tabular-nums}
.sk-step h3{margin-top:14px;font-size:17px;font-weight:600;color:var(--ink-900)}
.sk-step p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--muted)}
.sk-step::after{
  content:"";position:absolute;right:-19px;top:34px;width:12px;height:0;
  border-top:1px dashed var(--brand-200);
}
.sk-step:last-child::after{display:none}

/* ---------- FAQ ---------- */
.sk-faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.sk-faq-aside{position:sticky;top:92px}
.sk-faq-aside .sk-lead{margin-top:14px}
.sk-accordion .accordion-item{border:0;border-top:1px solid var(--line);background:transparent}
.sk-accordion .accordion-item:last-child{border-bottom:1px solid var(--line)}
.sk-accordion .accordion-button{
  background:transparent;color:var(--ink-900);font-size:16px;font-weight:600;line-height:1.6;
  padding:18px 44px 18px 18px;border-radius:0;box-shadow:none;
}
.sk-accordion .accordion-button:not(.collapsed){background:var(--paper-2);color:var(--brand-600);box-shadow:none}
.sk-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--signal-500);outline-offset:-2px}
.sk-accordion .accordion-button::after{
  background-image:none;content:"";position:absolute;right:18px;top:50%;width:12px;height:12px;
  margin-top:-6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;
  transform:rotate(45deg);transition:transform .2s ease;
}
.sk-accordion .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);margin-top:-3px}
.sk-accordion .accordion-body{padding:4px 18px 22px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- 表单 ---------- */
.sk-form-wrap{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:start}
.sk-form{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1)}
.sk-field{margin-bottom:20px}
.sk-field:last-of-type{margin-bottom:24px}
.sk-field label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:8px}
.sk-input,.sk-select,.sk-textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;
  padding:11px 14px;font-size:15px;color:var(--text);line-height:1.5;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.sk-input,.sk-select{height:44px}
.sk-textarea{min-height:110px;resize:vertical}
.sk-input:focus,.sk-select:focus,.sk-textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(101,88,214,.15);
}
.sk-form .sk-btn-main{width:100%}
.sk-form-note{margin-top:14px;font-size:13px;color:var(--muted)}
.sk-aside-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1)}
.sk-aside-list{margin-top:18px;display:grid;gap:16px}
.sk-aside-item{display:flex;gap:12px;font-size:14.5px;line-height:1.75;color:var(--ink-500)}
.sk-aside-item svg{flex-shrink:0;margin-top:4px;color:var(--signal-500)}
.sk-time-box{margin-top:22px;padding:16px 18px;border-radius:12px;background:var(--paper-2);border:1px solid var(--line);font-size:14px;color:var(--ink-500)}
.sk-time-box strong{display:block;color:var(--ink-900);font-weight:600;margin-bottom:4px}

/* ---------- 收尾 CTA ---------- */
.sk-cta-band{
  position:relative;border-radius:var(--r-card);padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  color:#fff;overflow:hidden;
  background:
    radial-gradient(circle at 20% 30%,rgba(255,255,255,.05) 0 1.2px,transparent 1.4px),
    radial-gradient(circle at 72% 60%,rgba(255,255,255,.045) 0 1px,transparent 1.3px),
    linear-gradient(160deg,#14112B 0%,#241E45 55%,#2E2560 100%);
}
.sk-cta-band h2{font-size:clamp(20px,2.6vw,26px);font-weight:700;color:#fff;line-height:1.4}
.sk-cta-band p{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.72)}

/* ---------- 页脚 ---------- */
.sk-footer{
  background:var(--ink-900);color:rgba(255,255,255,.72);padding-top:64px;margin-top:var(--sec-y);
}
.sk-footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.sk-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.sk-footer-logo{font-size:20px;font-weight:700;color:#fff;line-height:1.2}
.sk-footer-sub{font-size:12px;color:rgba(255,255,255,.5);margin-top:4px;letter-spacing:.08em}
.sk-footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:300px}
.sk-footer-links{display:grid;gap:10px;font-size:14px}
.sk-footer-links a{color:rgba(255,255,255,.72)}
.sk-footer-links a:hover{color:var(--signal-500)}
.sk-footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66)}
.sk-footer-contact a{color:var(--signal-500)}
.sk-footer-divider{margin-top:48px;border-top:1px solid rgba(255,255,255,.12)}
.sk-footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:20px 0 26px;font-size:13px;color:rgba(255,255,255,.5);
}
.sk-to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.72);font-size:13px}
.sk-to-top:hover{color:var(--signal-500)}

/* ---------- offcanvas 抽屉 ---------- */
.sk-drawer{width:320px}
.sk-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.sk-drawer .offcanvas-body{padding:0}
.sk-drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 20px;font-size:15px;color:var(--ink-500);border-bottom:1px solid var(--line);
}
.sk-drawer-nav a.is-active{color:var(--brand-600);font-weight:600;background:var(--brand-100)}
.sk-drawer-cta{padding:20px}
.sk-drawer-cta .sk-btn-main{width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec-y:64px}
  .sk-hero-grid{grid-template-columns:1fr;gap:36px}
  .sk-hero-media{order:-1;max-width:640px}
  .sk-ladder{grid-template-columns:repeat(2,1fr)}
  .sk-steps{grid-template-columns:repeat(2,1fr)}
  .sk-step:nth-child(even){transform:none}
  .sk-step::after{display:none}
  .sk-footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .sk-nav-list{display:none}
  .sk-burger{display:inline-flex}
  .sk-nav-actions .sk-btn-main{display:none}
  .sk-stats{grid-template-columns:repeat(2,1fr)}
  .sk-faq-grid{grid-template-columns:1fr;gap:28px}
  .sk-faq-aside{position:static}
  .sk-form-wrap{grid-template-columns:1fr;gap:28px}
  .sk-flash{grid-template-columns:1fr;gap:24px;padding:30px 26px}
  .sk-tip-scroll{display:block}
  .sk-compare tbody th{box-shadow:6px 0 12px -8px rgba(20,17,43,.25)}
}
@media (max-width:767px){
  :root{--sec-y:44px}
  body{font-size:15.5px}
  .sk-topbar-tip{display:none}
  .sk-hero{padding-top:36px;padding-bottom:44px}
  .sk-hero-desc{font-size:15.5px}
  .sk-hero-cta .sk-btn-main,.sk-hero-cta .sk-btn-line{width:100%;max-width:320px}
  .sk-ladder{grid-template-columns:1fr;gap:18px}
  .sk-ladder-item::after{display:none}
  .sk-steps{grid-template-columns:1fr}
  .sk-flash-body{flex-direction:column;align-items:flex-start}
  .sk-flash-body .sk-btn-signal{width:100%;max-width:320px}
  .sk-countdown{flex-wrap:wrap}
  .sk-count-cell{width:58px}
  .sk-footer-grid{grid-template-columns:1fr;gap:28px}
  .sk-cta-band{padding:28px 24px}
  .sk-cta-band .sk-btn-signal{width:100%;max-width:320px}
  .sk-form{padding:22px}
  .sk-accordion .accordion-button{font-size:15px;padding:16px 40px 16px 14px}
}
@media (max-width:575px){
  .sk-topbar-right .sk-topbar-btn{display:none}
  .sk-stats{grid-template-columns:1fr 1fr}
  .sk-stat{padding:16px}
  .sk-stat-num{font-size:22px}
  .sk-hero h1{font-size:28px}
  .sk-h2{font-size:21px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms!important;animation-duration:.001ms!important}
  html{scroll-behavior:auto}
  .sk-card:hover,.sk-btn-main:hover,.sk-btn-signal:hover,.sk-ladder-item:hover{transform:none}
}

/* roulang page: article */
:root{
  --ink-900:#14112B;--ink-700:#241E45;--ink-500:#3A3268;
  --brand-600:#4B3FA8;--brand-500:#6558D6;--brand-200:#CFC8F5;--brand-100:#EDEAFF;
  --signal-500:#17C3A2;--accent-500:#FFB03A;
  --paper:#FBF9FF;--paper-2:#F3F0FA;--line:#E4DFF2;
  --text:#1F1B33;--muted:#6A6483;
  --r-card:16px;--r-img:12px;--r-btn:10px;
  --sh-1:0 1px 2px rgba(20,17,43,.06);
  --sh-2:0 12px 28px -12px rgba(20,17,43,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-500)}
button{font-family:inherit}
ul,ol{padding-left:1.2em}
:focus-visible{outline:2px solid var(--signal-500);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;padding-left:20px;padding-right:20px}
@media (min-width:1400px){.container{max-width:1240px}}

/* 顶部信息条 */
.sk-topbar{background:var(--ink-900);color:rgba(255,255,255,.72);font-size:13px;height:38px;display:flex;align-items:center}
.sk-topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
.sk-topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.sk-topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em}
.sk-topbar-tip{color:rgba(255,255,255,.6);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sk-topbar-right{display:flex;align-items:center;gap:14px;white-space:nowrap}
.sk-topbar-right a.sk-top-link{color:rgba(255,255,255,.86)}
.sk-topbar-right a.sk-top-link:hover{color:var(--signal-500)}
.sk-top-btn{border:1px solid rgba(255,255,255,.28);color:#fff;font-size:12px;padding:4px 13px;border-radius:999px;line-height:1.6}
.sk-top-btn:hover{border-color:var(--signal-500);color:var(--signal-500)}

/* 主导航 */
.sk-header{position:sticky;top:0;z-index:1030;background:#fff;transition:box-shadow .2s ease,border-color .2s ease;border-bottom:1px solid transparent}
.sk-header.is-stuck{border-bottom:1px solid var(--line);box-shadow:0 6px 18px -14px rgba(20,17,43,.4)}
.sk-nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:64px}
.sk-logo{display:flex;flex-direction:column;line-height:1.15;color:var(--ink-900)}
.sk-logo:hover{color:var(--brand-600)}
.sk-logo-main{font-size:19px;font-weight:700;letter-spacing:.02em}
.sk-logo-sub{font-size:12px;color:var(--muted);margin-top:2px}
.sk-nav-list{display:flex;align-items:center;gap:26px;list-style:none;margin:0;padding:0}
.sk-nav-list a{display:inline-block;font-size:15px;color:var(--ink-700);padding:20px 0;position:relative;line-height:1.4}
.sk-nav-list a::after{content:"";position:absolute;left:0;right:0;bottom:14px;height:3px;border-radius:2px;background:var(--signal-500);transform:scaleX(0);transform-origin:left;transition:transform .2s ease}
.sk-nav-list a:hover{color:var(--brand-600)}
.sk-nav-list a:hover::after{transform:scaleX(1)}
.sk-nav-list a.is-active{color:var(--brand-600);font-weight:600}
.sk-nav-list a.is-active::after{background:var(--brand-600);height:2px;transform:scaleX(1)}
.sk-nav-actions{display:flex;align-items:center;gap:12px}
.sk-btn-main{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--brand-600);color:#fff;font-weight:600;font-size:15px;padding:12px 28px;border-radius:var(--r-btn);border:1px solid var(--brand-600);box-shadow:var(--sh-1);transition:background .18s ease,transform .18s ease,box-shadow .18s ease}
.sk-btn-main:hover{background:var(--brand-500);border-color:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.sk-btn-main:active{transform:translateY(0)}
.sk-btn-sm{padding:9px 20px;font-size:14px}
.sk-btn-line{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:transparent;color:var(--brand-600);font-weight:600;font-size:15px;padding:11px 26px;border-radius:var(--r-btn);border:1px solid var(--brand-200);transition:background .18s ease,border-color .18s ease,transform .18s ease}
.sk-btn-line:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px)}
.sk-btn-signal{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--signal-500);color:var(--ink-900);font-weight:600;font-size:15px;padding:12px 28px;border-radius:var(--r-btn);border:1px solid var(--signal-500);transition:filter .18s ease,transform .18s ease}
.sk-btn-signal:hover{filter:brightness(1.06);color:var(--ink-900);transform:translateY(-1px)}
.sk-link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px;color:var(--brand-600);border-bottom:1px solid transparent;padding-bottom:2px}
.sk-link-arrow svg{transition:transform .2s ease}
.sk-link-arrow:hover{border-bottom-color:var(--signal-500)}
.sk-link-arrow:hover svg{transform:translateX(3px)}
.sk-burger{display:none;align-items:center;justify-content:center;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-700)}
.sk-burger:hover{border-color:var(--brand-200);color:var(--brand-600)}

/* 抽屉 */
.sk-drawer{--bs-offcanvas-width:320px;background:var(--paper);border-left:1px solid var(--line)}
.sk-drawer .offcanvas-header{border-bottom:1px solid var(--line)}
.sk-drawer .offcanvas-title{font-size:16px;font-weight:700;color:var(--ink-900)}
.sk-drawer-list{list-style:none;margin:0;padding:0}
.sk-drawer-list li{border-bottom:1px solid var(--line)}
.sk-drawer-list a{display:block;padding:14px 4px;font-size:15px;color:var(--ink-700)}
.sk-drawer-list a:hover,.sk-drawer-list a.is-active{color:var(--brand-600);font-weight:600}
.sk-drawer-cta{margin-top:20px}
.sk-drawer .sk-btn-main{width:100%}

/* 面包屑 */
.sk-crumb-bar{background:var(--paper-2);border-bottom:1px solid var(--line)}
.sk-crumb{list-style:none;display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:0;padding:14px 0;font-size:13px;color:var(--muted)}
.sk-crumb li{display:flex;align-items:center;gap:8px;min-width:0}
.sk-crumb li+li::before{content:"";width:5px;height:5px;border-right:1.5px solid var(--brand-200);border-top:1.5px solid var(--brand-200);transform:rotate(45deg);display:inline-block}
.sk-crumb a{color:var(--muted)}
.sk-crumb a:hover{color:var(--brand-600)}
.sk-crumb .is-current{color:var(--ink-700);max-width:46ch;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:inline-block}

/* 文章布局 */
.sk-main{padding:44px 0 72px}
.sk-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;align-items:start}
.sk-post-head{padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:30px}
.sk-post-meta-top{display:flex;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--muted);margin-bottom:16px}
.sk-badge-cat{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;background:var(--brand-100);color:var(--brand-600);font-size:13px;font-weight:600}
.sk-badge-hot{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;background:var(--accent-500);color:var(--ink-900);font-size:13px;font-weight:600}
.sk-dot{width:4px;height:4px;border-radius:50%;background:var(--brand-200);display:inline-block}
.sk-post-title{font-size:clamp(30px,4.2vw,44px);line-height:1.25;font-weight:700;letter-spacing:0;color:var(--ink-900);margin:0}
.sk-post-lead{margin:18px 0 0;font-size:16px;line-height:1.85;color:var(--muted)}

/* 正文排版 */
.sk-post-body{font-size:16.5px;line-height:1.9;max-width:760px;color:var(--text)}
.sk-post-body p{margin:0 0 1.4em}
.sk-post-body h2{font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700;color:var(--ink-900);margin:40px 0 16px;padding-left:16px;position:relative}
.sk-post-body h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:2px;background:var(--brand-600)}
.sk-post-body h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink-900);margin:28px 0 12px;padding-left:16px;position:relative}
.sk-post-body h3::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--brand-500)}
.sk-post-body ul,.sk-post-body ol{margin:0 0 1.4em;line-height:1.9;padding-left:1.4em}
.sk-post-body li{margin-bottom:.5em}
.sk-post-body blockquote{margin:26px 0;padding:18px 22px;background:var(--paper-2);border-left:3px solid var(--brand-500);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--ink-700)}
.sk-post-body blockquote p:last-child{margin-bottom:0}
.sk-post-body img{border-radius:var(--r-img);margin:24px 0 10px;width:100%;height:auto;object-fit:cover}
.sk-post-body figure{margin:24px 0}
.sk-post-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.sk-post-body a{color:var(--brand-600);text-decoration:underline;text-decoration-color:var(--brand-200);text-underline-offset:3px}
.sk-post-body a:hover{text-decoration-color:var(--signal-500)}
.sk-post-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;border-radius:14px;overflow:hidden;border:1px solid var(--line)}
.sk-post-body thead th{background:var(--brand-100);color:var(--ink-700);font-weight:600}
.sk-post-body th,.sk-post-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.sk-post-body tbody tr:nth-child(even){background:var(--paper-2)}
.sk-post-body pre{background:var(--ink-900);color:#E9E5FF;font-size:14px;line-height:1.8;padding:18px 20px;border-radius:14px;overflow-x:auto;margin:24px 0}
.sk-post-body code{font-size:14px;background:var(--brand-100);color:var(--brand-600);padding:2px 6px;border-radius:6px}
.sk-post-body pre code{background:transparent;color:inherit;padding:0}

/* 空态 */
.sk-empty{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:44px 28px;text-align:center;box-shadow:var(--sh-1)}
.sk-empty svg{color:var(--brand-200);margin-bottom:14px}
.sk-empty h2{font-size:20px;font-weight:700;color:var(--ink-900);margin:0 0 10px;padding:0}
.sk-empty h2::before{display:none}
.sk-empty p{font-size:14px;color:var(--muted);margin:0 0 20px}

/* 标签 */
.sk-tags{display:flex;flex-wrap:wrap;gap:10px;margin:34px 0 0;padding-top:24px;border-top:1px solid var(--line)}
.sk-tag{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;background:var(--paper-2);border:1px solid var(--line);font-size:13px;color:var(--ink-500)}
.sk-tag:hover{background:var(--brand-100);border-color:var(--brand-200);color:var(--brand-600)}

/* 文末翻页 */
.sk-pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px}
.sk-pager-item{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:18px 20px;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.sk-pager-item:hover{border-color:var(--brand-200);transform:translateY(-3px);box-shadow:var(--sh-2)}
.sk-pager-label{font-size:12px;color:var(--muted);display:block;margin-bottom:6px}
.sk-pager-title{font-size:15px;font-weight:600;color:var(--ink-900);display:block;line-height:1.6}
.sk-pager-item.is-next{text-align:right}

/* 侧栏 */
.sk-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px}
.sk-side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh-1)}
.sk-side-title{font-size:15px;font-weight:700;color:var(--ink-900);margin:0 0 14px;display:flex;align-items:center;gap:8px}
.sk-side-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand-600)}
.sk-toc{list-style:none;margin:0;padding:0}
.sk-toc li+li{margin-top:2px}
.sk-toc a{display:block;font-size:14px;color:var(--ink-500);padding:7px 10px;border-radius:8px;border-left:2px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease}
.sk-toc a:hover{background:var(--brand-100);color:var(--brand-600);border-left-color:var(--brand-500)}
.sk-side-posts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.sk-side-post{display:grid;grid-template-columns:72px 1fr;gap:12px;align-items:start}
.sk-side-post img{width:72px;height:54px;object-fit:cover;border-radius:10px}
.sk-side-post a{font-size:14px;line-height:1.55;color:var(--ink-700);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sk-side-post a:hover{color:var(--brand-600)}
.sk-side-post .sk-side-date{font-size:12px;color:var(--muted);display:block;margin-top:6px}

/* 相关推荐卡片 */
.sk-section{padding-top:56px}
.sk-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.sk-h2{font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700;color:var(--ink-900);margin:0;position:relative;padding-left:16px}
.sk-h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:2px;background:var(--brand-600)}
.sk-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.sk-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;height:100%}
.sk-card:hover{border-color:var(--brand-200);transform:translateY(-4px);box-shadow:var(--sh-2)}
.sk-card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.sk-card-thumb img{width:100%;height:100%;object-fit:cover}
.sk-card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.sk-card-title{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink-900);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sk-card-desc{font-size:14px;line-height:1.7;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sk-card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}

/* CTA 条 */
.sk-cta{margin-top:64px;background:linear-gradient(160deg,#14112B 0%,#241E45 55%,#2E2560 100%);border-radius:20px;padding:44px 44px;color:#fff;position:relative;overflow:hidden}
.sk-cta::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);background-size:56px 56px;opacity:.05;pointer-events:none}
.sk-cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.sk-cta h2{font-size:clamp(20px,2.6vw,26px);font-weight:700;margin:0 0 10px}
.sk-cta p{margin:0;font-size:15px;color:rgba(255,255,255,.74);max-width:56ch}
.sk-cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* 页脚 */
.sk-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:72px}
.sk-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.sk-footer-logo{font-size:19px;font-weight:700;color:#fff}
.sk-footer-sub{font-size:12px;color:rgba(255,255,255,.5);margin-top:4px}
.sk-footer-desc{font-size:14px;line-height:1.8;margin:16px 0 0;color:rgba(255,255,255,.62);max-width:30ch}
.sk-footer h4{font-size:15px;color:#fff;margin:0 0 16px;font-weight:600}
.sk-footer-links{list-style:none;margin:0;padding:0}
.sk-footer-links li+li{margin-top:10px}
.sk-footer-links a{font-size:14px;color:rgba(255,255,255,.68)}
.sk-footer-links a:hover{color:var(--signal-500)}
.sk-footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.68)}
.sk-footer-contact a{color:var(--signal-500)}
.sk-footer-divider{height:1px;background:rgba(255,255,255,.12);margin:40px 0 20px}
.sk-footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55)}
.sk-to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.72);font-size:13px}
.sk-to-top:hover{color:var(--signal-500)}

@media (max-width:1199.98px){
  .sk-layout{grid-template-columns:minmax(0,1fr) 320px;gap:32px}
  .sk-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sk-footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991.98px){
  .sk-nav-list{display:none}
  .sk-burger{display:inline-flex}
  .sk-nav-actions .sk-btn-main{display:none}
  .sk-layout{grid-template-columns:minmax(0,1fr)}
  .sk-side{position:static;order:2}
  .sk-main{padding:32px 0 48px}
  .sk-cta{padding:32px 26px}
}
@media (max-width:767.98px){
  .sk-topbar-tip{display:none}
  .sk-card-grid{grid-template-columns:minmax(0,1fr)}
  .sk-pager{grid-template-columns:minmax(0,1fr)}
  .sk-pager-item.is-next{text-align:left}
  .sk-post-body{font-size:16px;line-height:1.85}
  .sk-footer{padding:48px 0 24px}
  .sk-footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .sk-footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:575.98px){
  .sk-topbar-right .sk-top-btn{display:none}
  .sk-main{padding:24px 0 40px}
  .sk-post-title{font-size:26px}
  .sk-cta-actions .sk-btn-main,.sk-cta-actions .sk-btn-signal{width:100%;max-width:320px}
  .sk-side-card{padding:18px}
  .sk-card-body{padding:16px 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --ink-900:#14112B;
  --ink-700:#241E45;
  --ink-500:#3A3268;
  --brand-600:#4B3FA8;
  --brand-500:#6558D6;
  --brand-200:#CFC8F5;
  --brand-100:#EDEAFF;
  --signal-500:#17C3A2;
  --accent-500:#FFB03A;
  --paper:#FBF9FF;
  --paper-2:#F3F0FA;
  --line:#E4DFF2;
  --text:#1F1B33;
  --muted:#6A6483;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(20,17,43,.06);
  --shadow-2:0 12px 28px -12px rgba(20,17,43,.18);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-500)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--signal-500);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-200);color:var(--ink-900)}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:1400px){.container{max-width:1240px}}

/* ============ 顶部信息条 ============ */
.sk-topbar{background:var(--ink-900);color:rgba(255,255,255,.78);font-size:13px;line-height:1.5}
.sk-topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:38px}
.sk-topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.sk-topbar-domain{color:#fff;font-weight:600;letter-spacing:.03em;font-variant-numeric:tabular-nums}
.sk-topbar-tip{color:rgba(255,255,255,.62);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sk-topbar-right{display:flex;align-items:center;gap:14px;flex:none}
.sk-topbar-link{color:rgba(255,255,255,.84);font-size:13px}
.sk-topbar-link:hover{color:var(--signal-500)}

/* ============ 按钮 ============ */
.sk-btn-main,.sk-btn-line,.sk-btn-signal{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.2;border-radius:var(--radius-btn);
  padding:12px 28px;border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.sk-btn-main{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-1)}
.sk-btn-main:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.sk-btn-main:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.sk-btn-line{background:#fff;border-color:var(--brand-200);color:var(--brand-600)}
.sk-btn-line:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-600)}
.sk-btn-line:active{transform:translateY(1px)}
.sk-btn-signal{background:var(--signal-500);color:var(--ink-900)}
.sk-btn-signal:hover{background:#12ae90;color:var(--ink-900);transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(23,195,162,.9)}
.sk-btn-signal:active{transform:translateY(0)}
.sk-btn-sm{padding:9px 18px;font-size:14px}
.sk-btn-xs{padding:6px 14px;font-size:13px;background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.sk-btn-xs:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.55);color:#fff}
.sk-btn-block{width:100%}

/* ============ 主导航 ============ */
.sk-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  transition:box-shadow .2s ease,border-color .2s ease;
  border-bottom:1px solid transparent;
}
.sk-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 10px 24px -20px rgba(20,17,43,.7)}
.sk-nav{display:flex;align-items:center;gap:18px;min-height:64px}
.sk-logo{display:flex;flex-direction:column;justify-content:center;line-height:1.15;flex:none}
.sk-logo-main{font-size:20px;font-weight:700;color:var(--ink-900);letter-spacing:.01em}
.sk-logo-sub{font-size:12px;color:var(--muted);margin-top:2px;letter-spacing:.04em}
.sk-logo:hover .sk-logo-main{color:var(--brand-600)}
.sk-nav-list{display:flex;align-items:center;gap:0;margin:0 0 0 auto}
.sk-nav-list a{
  position:relative;display:block;padding:0 14px;line-height:64px;
  font-size:15px;color:var(--ink-700);white-space:nowrap;
}
.sk-nav-list a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:12px;height:3px;
  border-radius:2px;background:transparent;transition:background-color .18s ease;
}
.sk-nav-list a:hover{color:var(--brand-600)}
.sk-nav-list a:hover::after{background:var(--signal-500)}
.sk-nav-list a.is-active{color:var(--brand-600);font-weight:600}
.sk-nav-list a.is-active::after{background:var(--brand-600);height:2px}
.sk-nav-actions{display:flex;align-items:center;gap:10px;margin-left:14px;flex:none}
.sk-burger{
  display:none;align-items:center;justify-content:center;width:40px;height:40px;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-700);
  transition:border-color .18s ease,background-color .18s ease;
}
.sk-burger:hover{border-color:var(--brand-200);background:var(--brand-100);color:var(--brand-600)}

/* ============ 抽屉 ============ */
.sk-drawer{width:320px;max-width:88vw;border-left:1px solid var(--line)}
.sk-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.sk-drawer-title{font-size:16px;font-weight:700;color:var(--ink-900)}
.sk-drawer-close{
  width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink-500);
}
.sk-drawer-close:hover{background:var(--brand-100);color:var(--brand-600);border-color:var(--brand-200)}
.sk-drawer .offcanvas-body{padding:8px 20px 24px;display:flex;flex-direction:column;height:100%}
.sk-drawer-list{margin:0 0 20px}
.sk-drawer-list li{border-bottom:1px solid var(--line)}
.sk-drawer-list a{display:block;padding:14px 2px;font-size:15px;color:var(--ink-700)}
.sk-drawer-list a:hover{color:var(--brand-600)}
.sk-drawer-list a.is-active{color:var(--brand-600);font-weight:600}
.sk-drawer-note{font-size:13px;color:var(--muted);margin-top:auto;padding-top:16px;line-height:1.7}

/* ============ 页头 ============ */
.sk-pagehead{
  padding:44px 0 48px;
  background:linear-gradient(180deg,var(--paper-2) 0%,var(--paper) 100%);
  border-bottom:1px solid var(--line);
}
.sk-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px}
.sk-crumb li{display:flex;align-items:center;gap:8px}
.sk-crumb li+li::before{content:"/";color:var(--brand-200)}
.sk-crumb a{color:var(--muted)}
.sk-crumb a:hover{color:var(--brand-600)}
.sk-crumb .is-current{color:var(--ink-500);font-weight:600}
.sk-pagehead h1{
  font-size:clamp(30px,4.2vw,44px);line-height:1.25;font-weight:700;letter-spacing:0;
  color:var(--ink-900);margin-bottom:16px;
}
.sk-lead{font-size:16px;line-height:1.85;color:var(--muted);max-width:640px}
.sk-pagehead-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.sk-chip{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:13px;font-weight:500;
  background:var(--brand-100);color:var(--brand-600);
}
.sk-chip-accent{background:var(--accent-500);color:var(--ink-900);font-weight:600}
.sk-pagehead-figure{
  border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-2);
  border:1px solid rgba(255,255,255,.6);
}
.sk-pagehead-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ============ 状态条 ============ */
.sk-status{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--signal-500);
  border-radius:12px;padding:16px 20px;box-shadow:var(--shadow-1);
}
.sk-status-dot{
  flex:none;width:10px;height:10px;border-radius:50%;background:var(--signal-500);
  margin-top:9px;box-shadow:0 0 0 4px rgba(23,195,162,.16);
}
.sk-status strong{display:block;font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:2px}
.sk-status p{font-size:13.5px;line-height:1.7;color:var(--muted)}

/* ============ 主体板块 ============ */
.sk-section{padding:64px 0}
.sk-section-tight{padding:44px 0 64px}
.sk-h2{
  position:relative;font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700;
  color:var(--ink-900);padding-left:14px;margin-bottom:10px;
}
.sk-h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:2px;background:var(--brand-600);
}
.sk-section-intro{font-size:15px;color:var(--muted);max-width:720px;margin-bottom:32px}

/* 步骤长文 */
.sk-step{display:grid;grid-template-columns:52px minmax(0,1fr);gap:18px;padding:24px 0;border-bottom:1px dashed var(--line)}
.sk-step:first-of-type{padding-top:8px}
.sk-step:last-of-type{border-bottom:0;padding-bottom:0}
.sk-step-num{
  width:52px;height:52px;border-radius:50%;border:2px solid var(--brand-200);background:#fff;
  color:var(--brand-600);display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;font-variant-numeric:tabular-nums;
}
.sk-step h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink-900);margin-bottom:8px}
.sk-step p{font-size:16px;line-height:1.9;color:var(--text);margin-bottom:12px}
.sk-step p:last-child{margin-bottom:0}
.sk-step ul{margin-top:4px}
.sk-step ul li{
  position:relative;padding-left:18px;font-size:15px;line-height:1.9;color:var(--muted);margin-bottom:4px;
}
.sk-step ul li::before{
  content:"";position:absolute;left:2px;top:12px;width:6px;height:6px;border-radius:2px;
  background:var(--brand-200);
}

/* 侧栏 */
.sk-aside{position:sticky;top:88px;display:flex;flex-direction:column;gap:16px}
.sk-aside-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-1);
}
.sk-aside-title{
  font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:10px;
  display:flex;align-items:center;gap:8px;
}
.sk-aside-title svg{color:var(--brand-600)}
.sk-toc li{border-bottom:1px dashed var(--line)}
.sk-toc li:last-child{border-bottom:0}
.sk-toc a{
  display:flex;align-items:center;gap:10px;padding:10px 0;font-size:14px;color:var(--ink-500);
  transition:color .18s ease,transform .18s ease;
}
.sk-toc a span{
  font-size:12px;font-weight:600;color:var(--brand-600);font-variant-numeric:tabular-nums;
  background:var(--brand-100);border-radius:6px;padding:1px 6px;
}
.sk-toc a:hover{color:var(--brand-600);transform:translateX(3px)}
.sk-aside-note{font-size:13.5px;line-height:1.8;color:var(--muted)}
.sk-aside-note strong{color:var(--ink-900);font-weight:600}
.sk-aside-actions{margin-top:14px;display:flex;flex-direction:column;gap:10px}

/* 自查对照 */
.sk-check-grid{display:grid;grid-template-columns:1fr;gap:16px}
.sk-check{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.sk-check:hover{border-color:var(--brand-200);transform:translateY(-3px);box-shadow:var(--shadow-2)}
.sk-check-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.sk-check-icon{
  flex:none;width:34px;height:34px;border-radius:10px;background:var(--brand-100);
  color:var(--brand-600);display:flex;align-items:center;justify-content:center;
}
.sk-check h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink-900)}
.sk-check p{font-size:14.5px;line-height:1.8;color:var(--muted)}
.sk-check .sk-tagline{
  display:block;margin-top:12px;font-size:13px;color:var(--brand-600);font-weight:600;
}

/* FAQ */
.sk-faq-wrap{display:grid;grid-template-columns:1fr;gap:28px}
.sk-faq-intro p{font-size:15px;line-height:1.85;color:var(--muted);margin-top:10px;max-width:360px}
.sk-faq .accordion-item{border:0;border-top:1px solid var(--line);background:transparent}
.sk-faq .accordion-item:last-child{border-bottom:1px solid var(--line)}
.sk-faq .accordion-button{
  background:transparent;color:var(--ink-900);font-size:16px;font-weight:600;line-height:1.6;
  padding:18px 44px 18px 0;box-shadow:none;border-radius:0;
}
.sk-faq .accordion-button:not(.collapsed){background:var(--paper-2);color:var(--brand-600);padding-left:14px}
.sk-faq .accordion-button:hover{color:var(--brand-600)}
.sk-faq .accordion-button:focus{box-shadow:none;border-color:transparent;outline:none}
.sk-faq .accordion-button:focus-visible{outline:2px solid var(--signal-500);outline-offset:2px}
.sk-faq .accordion-button::after{
  width:20px;height:20px;background-size:20px 20px;margin-right:14px;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' fill='none' stroke='%234B3FA8' stroke-width='1.5' stroke-linecap='round'%3E%3Cpath d='M10 4v12M4 10h12'/%3E%3C/svg%3E");
  transition:transform .2s ease;
}
.sk-faq .accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.sk-faq .accordion-body{
  padding:4px 20px 20px 14px;font-size:15px;line-height:1.85;color:var(--muted);
}
.sk-faq .accordion-body strong{color:var(--ink-900);font-weight:600}

/* 收尾 CTA */
.sk-cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-card);
  padding:44px 40px;
  background:
    radial-gradient(1.3px 1.3px at 12% 26%,rgba(255,255,255,.55),transparent 60%),
    radial-gradient(1.2px 1.2px at 78% 16%,rgba(255,255,255,.42),transparent 60%),
    radial-gradient(1.5px 1.5px at 46% 74%,rgba(255,255,255,.45),transparent 60%),
    radial-gradient(1.1px 1.1px at 88% 64%,rgba(255,255,255,.35),transparent 60%),
    radial-gradient(1.1px 1.1px at 26% 86%,rgba(255,255,255,.3),transparent 60%),
    linear-gradient(160deg,#14112B 0%,#241E45 55%,#2E2560 100%);
  color:#fff;
}
.sk-cta-band h2{
  font-size:clamp(22px,3vw,28px);line-height:1.35;font-weight:700;color:#fff;
  margin-bottom:12px;padding:0;
}
.sk-cta-band h2::before{display:none}
.sk-cta-band p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.72);max-width:600px}
.sk-cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.sk-cta-band .sk-btn-line{background:transparent;border-color:rgba(255,255,255,.3);color:#fff}
.sk-cta-band .sk-btn-line:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.55);color:#fff}

/* ============ 页脚 ============ */
.sk-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:56px 0 26px;margin-top:8px}
.sk-footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
.sk-footer-logo{font-size:20px;font-weight:700;color:#fff;letter-spacing:.01em}
.sk-footer-sub{font-size:12px;color:rgba(255,255,255,.55);margin-top:2px;letter-spacing:.04em}
.sk-footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);margin-top:14px;max-width:320px}
.sk-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.sk-footer-links li{margin-bottom:10px}
.sk-footer-links a{font-size:13.5px;color:rgba(255,255,255,.72)}
.sk-footer-links a:hover{color:var(--signal-500)}
.sk-footer-contact{font-size:13.5px;line-height:1.95;color:rgba(255,255,255,.66)}
.sk-footer-contact a{color:var(--signal-500)}
.sk-footer-contact a:hover{color:#fff}
.sk-footer-divider{height:1px;background:rgba(255,255,255,.12);margin:34px 0 18px}
.sk-footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.sk-to-top{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:rgba(255,255,255,.72);
  background:transparent;border:0;padding:0;cursor:pointer;
}
.sk-to-top:hover{color:var(--signal-500)}

/* ============ 响应式 ============ */
@media (min-width:768px){
  .sk-check-grid{grid-template-columns:1fr 1fr}
  .sk-footer-grid{grid-template-columns:1fr 1fr}
  .sk-faq-wrap{grid-template-columns:1fr 1fr;gap:40px}
  .sk-faq-intro{position:sticky;top:88px;align-self:start}
}
@media (min-width:992px){
  .sk-footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px}
  .sk-section{padding:88px 0}
  .sk-section-tight{padding:56px 0 88px}
  .sk-pagehead{padding:52px 0 56px}
  .sk-cta-band{padding:52px 56px}
}
@media (max-width:991.98px){
  .sk-nav-list{display:none}
  .sk-burger{display:inline-flex}
  .sk-aside{position:static;margin-top:8px}
  .sk-nav{gap:10px}
  .sk-nav-actions{margin-left:auto}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  .sk-topbar-tip{display:none}
  .sk-pagehead{padding:32px 0 36px}
  .sk-section{padding:44px 0}
  .sk-section-tight{padding:32px 0 44px}
  .sk-step{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:20px 0}
  .sk-step-num{width:44px;height:44px;font-size:16px}
  .sk-step h3{font-size:17.5px}
  .sk-cta-band{padding:32px 22px;border-radius:14px}
  .sk-cta-actions .sk-btn-main,.sk-cta-actions .sk-btn-line{width:100%;max-width:320px}
  .sk-footer{padding:44px 0 22px}
  .sk-footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:575.98px){
  .sk-nav-actions .sk-btn-main{display:none}
  .sk-logo-main{font-size:18px}
  .sk-pagehead h1{font-size:26px}
  .sk-lead{font-size:15px}
  .sk-status{padding:14px 16px}
  .sk-cta-actions .sk-btn-main,.sk-cta-actions .sk-btn-line{max-width:none;width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .sk-check:hover,.sk-btn-main:hover,.sk-btn-signal:hover,.sk-toc a:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --ink-900:#14112B;--ink-700:#241E45;--ink-500:#3A3268;
  --brand-600:#4B3FA8;--brand-500:#6558D6;--brand-200:#CFC8F5;--brand-100:#EDEAFF;
  --signal-500:#17C3A2;--accent-500:#FFB03A;
  --paper:#FBF9FF;--paper-2:#F3F0FA;--line:#E4DFF2;
  --text:#1F1B33;--muted:#6A6483;
  --r-card:16px;--r-img:12px;--r-btn:10px;--r-table:14px;
  --sh-1:0 1px 2px rgba(20,17,43,.06);
  --sh-2:0 12px 28px -12px rgba(20,17,43,.18);
  --sec-y:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--paper);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-500);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--signal-500);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:1400px){.container{max-width:1240px;}}

/* ---------- top bar ---------- */
.sk-topbar{background:var(--ink-900);color:rgba(255,255,255,.78);font-size:13px;}
.sk-topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.sk-topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.sk-topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em;}
.sk-topbar-tip{color:rgba(255,255,255,.62);white-space:nowrap;}
.sk-topbar-right{display:flex;align-items:center;gap:14px;}
.sk-topbar-link{color:rgba(255,255,255,.78);}
.sk-topbar-link:hover{color:var(--signal-500);}
.sk-topbar-btn{
  display:inline-block;padding:5px 14px;border:1px solid rgba(255,255,255,.34);
  border-radius:999px;color:#fff;font-size:12px;line-height:1.6;transition:.2s ease;
}
.sk-topbar-btn:hover{border-color:var(--signal-500);color:var(--signal-500);background:rgba(23,195,162,.08);}

/* ---------- header / nav ---------- */
.sk-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid transparent;transition:border-color .25s ease,box-shadow .25s ease;}
.sk-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 6px 18px -14px rgba(20,17,43,.4);}
.sk-nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:64px;}
.sk-logo{display:flex;flex-direction:column;justify-content:center;line-height:1.15;flex:0 0 auto;}
.sk-logo-main{font-size:21px;font-weight:700;color:var(--ink-900);letter-spacing:.02em;}
.sk-logo-sub{font-size:12px;color:var(--muted);letter-spacing:.14em;margin-top:3px;}
.sk-logo:hover .sk-logo-main{color:var(--brand-600);}
.sk-nav-list{display:flex;align-items:center;gap:26px;flex:1 1 auto;justify-content:center;}
.sk-nav-list a{
  position:relative;display:block;font-size:15px;line-height:64px;color:var(--ink-500);white-space:nowrap;
}
.sk-nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:3px;border-radius:2px;
  background:var(--signal-500);transform:scaleX(0);transform-origin:left center;transition:transform .22s ease;
}
.sk-nav-list a:hover{color:var(--brand-600);}
.sk-nav-list a:hover::after{transform:scaleX(1);}
.sk-nav-list a.is-active{color:var(--brand-600);font-weight:600;}
.sk-nav-list a.is-active::after{height:2px;background:var(--brand-600);transform:scaleX(1);}
.sk-nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.sk-burger{
  display:none;align-items:center;justify-content:center;width:42px;height:42px;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-700);cursor:pointer;
}
.sk-burger:hover{border-color:var(--brand-200);color:var(--brand-600);}

/* ---------- buttons ---------- */
.sk-btn-main{
  display:inline-block;background:var(--brand-600);color:#fff;font-weight:600;font-size:15px;
  padding:12px 28px;border-radius:var(--r-btn);border:1px solid var(--brand-600);
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease;
}
.sk-btn-main:hover{background:var(--brand-500);border-color:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.sk-btn-main:active{transform:translateY(0);box-shadow:var(--sh-1);}
.sk-btn-sm{padding:9px 20px;font-size:14px;}
.sk-btn-line{
  display:inline-block;background:#fff;color:var(--brand-600);font-weight:600;font-size:15px;
  padding:11px 26px;border:1px solid var(--brand-200);border-radius:var(--r-btn);transition:.2s ease;
}
.sk-btn-line:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px);}
.sk-btn-signal{
  display:inline-block;background:var(--signal-500);color:var(--ink-900);font-weight:600;font-size:15px;
  padding:12px 28px;border:1px solid var(--signal-500);border-radius:var(--r-btn);transition:.2s ease;
}
.sk-btn-signal:hover{background:#12ad90;border-color:#12ad90;color:var(--ink-900);transform:translateY(-1px);}
.sk-textlink{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600);}
.sk-textlink svg{transition:transform .2s ease;}
.sk-textlink:hover{color:var(--brand-500);border-bottom:1px solid var(--signal-500);}
.sk-textlink:hover svg{transform:translateX(3px);}

/* ---------- breadcrumb ---------- */
.sk-crumb-wrap{background:var(--paper-2);border-bottom:1px solid var(--line);}
.sk-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:12px 0;font-size:13px;color:var(--muted);}
.sk-breadcrumb li{display:flex;align-items:center;gap:8px;}
.sk-breadcrumb li+li::before{content:"/";color:var(--brand-200);}
.sk-breadcrumb a{color:var(--muted);}
.sk-breadcrumb a:hover{color:var(--brand-600);}
.sk-breadcrumb li[aria-current]{color:var(--ink-700);font-weight:600;}

/* ---------- section base ---------- */
.sk-section{padding:var(--sec-y) 0;}
.sk-section-alt{background:var(--paper-2);}
.sk-sec-head{margin-bottom:32px;}
.sk-sec-head h2{
  position:relative;font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700;color:var(--ink-900);
  padding-left:16px;
}
.sk-sec-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand-600);
}
.sk-sec-head p{margin-top:12px;color:var(--muted);font-size:15px;max-width:760px;}

/* ---------- page hero ---------- */
.sk-pagehero{
  position:relative;padding:56px 0 52px;background:
    linear-gradient(160deg,#14112B 0%,#241E45 52%,#2E2560 100%);
  color:#fff;overflow:hidden;
}
.sk-pagehero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:radial-gradient(#fff 1px,transparent 1px),radial-gradient(#fff 1px,transparent 1px);
  background-size:64px 64px,96px 96px;background-position:0 0,32px 40px;
}
.sk-pagehero-grid{position:relative;display:grid;grid-template-columns:1.35fr .85fr;gap:48px;align-items:center;}
.sk-hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:999px;
  background:rgba(23,195,162,.14);border:1px solid rgba(23,195,162,.42);
  color:var(--signal-500);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.sk-pagehero h1{
  margin-top:18px;font-size:clamp(30px,4.2vw,44px);line-height:1.25;font-weight:700;letter-spacing:0;color:#fff;
}
.sk-pagehero .sk-hero-sub{margin-top:16px;font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.78);max-width:620px;}
.sk-hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.sk-hero-meta span{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;color:rgba(255,255,255,.82);
  border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:6px 14px;background:rgba(255,255,255,.04);
}
.sk-hero-meta svg{color:var(--signal-500);}
.sk-hero-art{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid rgba(255,255,255,.12);}
.sk-hero-art img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;}
.sk-hero-art::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(20,17,43,.55) 0%,rgba(20,17,43,.10) 100%);
}
.sk-statusbar{
  position:relative;margin-top:32px;display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  padding:14px 20px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-left:4px solid var(--signal-500);font-size:14px;color:rgba(255,255,255,.82);
}
.sk-statusbar strong{color:#fff;}

/* ---------- alternating rows ---------- */
.sk-alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:36px 0;border-bottom:1px dashed var(--line);
}
.sk-alt-row:last-child{border-bottom:0;}
.sk-alt-row.is-flip .sk-alt-media{order:2;}
.sk-alt-media{border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1);border:1px solid var(--line);}
.sk-alt-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/9;}
.sk-stepno{
  display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--brand-200);color:var(--brand-600);font-size:15px;font-weight:700;background:var(--brand-100);
}
.sk-alt-body h3{margin:16px 0 12px;font-size:20px;line-height:1.5;font-weight:600;color:var(--ink-900);}
.sk-alt-body p{color:var(--muted);font-size:16px;line-height:1.85;max-width:760px;}
.sk-check{display:flex;flex-direction:column;gap:10px;margin-top:18px;}
.sk-check li{position:relative;padding-left:26px;font-size:15px;color:var(--ink-500);}
.sk-check li::before{
  content:"";position:absolute;left:0;top:8px;width:14px;height:14px;border-radius:50%;
  border:1.5px solid var(--signal-500);
}
.sk-check li::after{
  content:"";position:absolute;left:4px;top:12px;width:6px;height:6px;border-radius:50%;background:var(--signal-500);
}

/* ---------- risk table ---------- */
.sk-table-wrap{
  border:1px solid var(--line);border-radius:var(--r-table);background:#fff;overflow:hidden;
  box-shadow:var(--sh-1);
}
.sk-table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table.sk-table{width:100%;border-collapse:collapse;min-width:640px;font-size:15px;}
table.sk-table thead th{
  background:var(--brand-100);color:var(--ink-900);font-weight:600;font-size:14px;
  text-align:left;padding:16px 22px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.sk-table tbody td{padding:16px 22px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.75;}
table.sk-table tbody tr:last-child td{border-bottom:0;}
table.sk-table tbody tr:nth-child(even){background:var(--paper-2);}
table.sk-table tbody tr:hover{background:var(--brand-100);}
table.sk-table td:first-child{color:var(--ink-900);font-weight:600;width:38%;}
table.sk-table td:last-child{color:var(--muted);}
.sk-table-note{display:flex;align-items:center;gap:8px;margin-top:14px;font-size:13px;color:var(--muted);}
.sk-table-note svg{color:var(--brand-500);flex:0 0 auto;}

/* ---------- tip grid 2x2 ---------- */
.sk-tip-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:8px;}
.sk-tip-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;box-shadow:var(--sh-1);
}
.sk-tip-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-200);}
.sk-tip-icon{
  display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;
  background:var(--brand-100);color:var(--brand-600);margin-bottom:14px;
}
.sk-tip-card h3{font-size:17px;line-height:1.5;font-weight:600;color:var(--ink-900);}
.sk-tip-card p{margin-top:8px;font-size:14px;line-height:1.7;color:var(--muted);}

/* ---------- badge ---------- */
.sk-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;background:var(--brand-100);color:var(--brand-600);
}
.sk-badge-accent{background:var(--accent-500);color:var(--ink-900);}

/* ---------- faq ---------- */
.sk-faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start;}
.sk-faq-aside h2{position:relative;font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700;color:var(--ink-900);padding-left:16px;}
.sk-faq-aside h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand-600);}
.sk-faq-aside p{margin-top:14px;color:var(--muted);font-size:15px;max-width:360px;}
.sk-faq-aside .sk-btn-line{margin-top:22px;}
.accordion.sk-accordion .accordion-item{border:0;border-top:1px solid var(--line);background:transparent;}
.accordion.sk-accordion .accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion.sk-accordion .accordion-button{
  background:transparent;color:var(--ink-900);font-size:16px;font-weight:600;line-height:1.6;
  padding:20px 44px 20px 0;box-shadow:none;border-radius:0;
}
.accordion.sk-accordion .accordion-button:not(.collapsed){color:var(--brand-600);background:var(--paper-2);}
.accordion.sk-accordion .accordion-button::after{display:none;}
.accordion.sk-accordion .accordion-button .sk-plus{
  position:absolute;right:12px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;color:var(--brand-600);transition:transform .2s ease;
}
.accordion.sk-accordion .accordion-button:not(.collapsed) .sk-plus{transform:translateY(-50%) rotate(45deg);}
.accordion.sk-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--signal-500);outline-offset:-2px;}
.accordion.sk-accordion .accordion-body{padding:0 24px 22px 0;color:var(--muted);font-size:15px;line-height:1.8;background:var(--paper-2);}

/* ---------- cta band ---------- */
.sk-cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  background:linear-gradient(160deg,#14112B 0%,#241E45 55%,#2E2560 100%);
  color:#fff;padding:44px 48px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
}
.sk-cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:radial-gradient(#fff 1px,transparent 1px);background-size:56px 56px;
}
.sk-cta-band h2{position:relative;font-size:clamp(20px,2.6vw,26px);line-height:1.4;font-weight:700;color:#fff;}
.sk-cta-band p{position:relative;margin-top:10px;color:rgba(255,255,255,.72);font-size:15px;max-width:640px;}
.sk-cta-band .sk-cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- drawer ---------- */
.offcanvas.sk-drawer{width:min(88vw,340px);}
.sk-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.sk-drawer .offcanvas-title{font-size:17px;font-weight:700;color:var(--ink-900);}
.sk-drawer .offcanvas-body{padding:8px 20px 24px;}
.sk-drawer-list li{border-bottom:1px solid var(--line);}
.sk-drawer-list a{display:block;padding:14px 2px;font-size:15px;color:var(--ink-500);}
.sk-drawer-list a.is-active{color:var(--brand-600);font-weight:600;}
.sk-drawer-cta{display:block;margin-top:22px;text-align:center;}

/* ---------- footer ---------- */
.sk-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 28px;font-size:14px;}
.sk-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.sk-footer-logo{font-size:20px;font-weight:700;color:#fff;}
.sk-footer-sub{font-size:12px;letter-spacing:.14em;color:rgba(255,255,255,.5);margin-top:4px;}
.sk-footer-desc{margin-top:14px;font-size:13px;line-height:1.8;color:rgba(255,255,255,.6);max-width:300px;}
.sk-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.sk-footer-links li{margin-bottom:10px;}
.sk-footer-links a{color:rgba(255,255,255,.72);font-size:14px;}
.sk-footer-links a:hover{color:var(--signal-500);}
.sk-footer-contact{font-size:13px;line-height:2;color:rgba(255,255,255,.66);}
.sk-footer-contact a{color:var(--signal-500);}
.sk-footer-divider{height:1px;background:rgba(255,255,255,.12);margin:40px 0 20px;}
.sk-footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:rgba(255,255,255,.56);}
.sk-to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.72);}
.sk-to-top:hover{color:var(--signal-500);}

/* ---------- responsive ---------- */
@media (min-width:1200px){}
@media (max-width:1199.98px){
  :root{--sec-y:64px;}
  .sk-nav-list{gap:18px;}
  .sk-nav-list a{font-size:14px;}
  .sk-pagehero-grid{grid-template-columns:1fr;gap:32px;}
  .sk-hero-art{max-width:560px;}
  .sk-footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:991.98px){
  .sk-nav-list{display:none;}
  .sk-burger{display:inline-flex;}
  .sk-alt-row{grid-template-columns:1fr;gap:24px;padding:28px 0;}
  .sk-alt-row.is-flip .sk-alt-media{order:0;}
  .sk-faq-grid{grid-template-columns:1fr;gap:28px;}
  .sk-cta-band{grid-template-columns:1fr;padding:32px 26px;}
  .sk-tip-grid{grid-template-columns:1fr;}
}
@media (max-width:767.98px){
  :root{--sec-y:44px;}
  .sk-pagehero{padding:40px 0 36px;}
  .sk-nav-actions .sk-btn-main{display:none;}
  .sk-topbar-tip{display:none;}
  .sk-btn-main,.sk-btn-signal{width:100%;max-width:320px;text-align:center;}
  .sk-btn-line{width:100%;max-width:320px;text-align:center;}
  .sk-footer-grid{grid-template-columns:1fr;gap:28px;}
  .sk-footer{padding:44px 0 22px;}
  .sk-hero-meta span{font-size:12px;}
  table.sk-table thead th,table.sk-table tbody td{padding:13px 16px;}
  .accordion.sk-accordion .accordion-button{font-size:15px;padding-right:38px;}
}
@media (max-width:575.98px){
  .sk-topbar-tip{display:none;}
  .sk-topbar-inner{min-height:36px;font-size:12px;}
  .sk-logo-main{font-size:19px;}
  .sk-cta-band{padding:26px 20px;}
  .sk-tip-card{padding:18px;}
  .sk-pagehero h1{font-size:27px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  .sk-tip-card:hover,.sk-btn-main:hover,.sk-btn-line:hover,.sk-btn-signal:hover{transform:none;}
}

/* roulang page: category3 */
:root{
  --ink-900:#14112B;--ink-700:#241E45;--ink-500:#3A3268;
  --brand-600:#4B3FA8;--brand-500:#6558D6;--brand-200:#CFC8F5;--brand-100:#EDEAFF;
  --signal-500:#17C3A2;--accent-500:#FFB03A;
  --paper:#FBF9FF;--paper-2:#F3F0FA;--line:#E4DFF2;
  --text:#1F1B33;--muted:#6A6483;
  --r-card:16px;--r-img:12px;--r-btn:10px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(20,17,43,.06);
  --sh-2:0 12px 28px -12px rgba(20,17,43,.18);
  --grad-dark:linear-gradient(160deg,#14112B 0%,#241E45 55%,#2E2560 100%);
  --pad-y:88px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--paper);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-500);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--text);}
:focus-visible{outline:2px solid var(--signal-500);outline-offset:2px;}
.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto;}
@media (min-width:1400px){.container{max-width:1240px;}}

/* ---------- 顶部信息条 ---------- */
.sk-topbar{background:var(--ink-900);color:rgba(255,255,255,.78);font-size:13px;height:38px;display:flex;align-items:center;}
.sk-topbar-inner{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1400px){.sk-topbar-inner{max-width:1240px;}}
.sk-topbar-left{display:flex;align-items:center;gap:12px;min-width:0;}
.sk-topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em;font-variant-numeric:tabular-nums;}
.sk-topbar-tip{color:rgba(255,255,255,.62);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.sk-topbar-right{display:flex;align-items:center;gap:16px;white-space:nowrap;}
.sk-topbar-right a{color:rgba(255,255,255,.78);font-size:13px;}
.sk-topbar-right a:hover{color:#fff;}
.sk-topbar-btn{border:1px solid rgba(255,255,255,.28);border-radius:var(--r-pill);padding:4px 14px;line-height:1.6;transition:border-color .2s ease,background .2s ease;}
.sk-topbar-btn:hover{border-color:var(--signal-500);background:rgba(23,195,162,.14);color:#fff;}

/* ---------- 主导航 ---------- */
.sk-header{background:#fff;position:sticky;top:0;z-index:1030;transition:box-shadow .25s ease,border-color .25s ease;border-bottom:1px solid transparent;}
.sk-header.is-stuck{border-bottom:1px solid var(--line);box-shadow:0 6px 20px -14px rgba(20,17,43,.35);}
.sk-nav{display:flex;align-items:center;gap:28px;min-height:64px;}
.sk-logo{display:flex;flex-direction:column;justify-content:center;line-height:1.15;flex:0 0 auto;}
.sk-logo-main{font-size:20px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;}
.sk-logo-sub{font-size:12px;color:var(--muted);margin-top:2px;letter-spacing:.06em;}
.sk-nav-list{display:flex;align-items:center;gap:26px;margin-left:auto;}
.sk-nav-list a{position:relative;display:block;line-height:64px;font-size:15px;color:var(--ink-500);font-weight:500;}
.sk-nav-list a::after{content:"";position:absolute;left:50%;bottom:16px;width:0;height:3px;background:var(--signal-500);border-radius:2px;transform:translateX(-50%);transition:width .22s ease;}
.sk-nav-list a:hover{color:var(--brand-600);}
.sk-nav-list a:hover::after{width:18px;}
.sk-nav-list a.is-active{color:var(--brand-600);font-weight:600;}
.sk-nav-list a.is-active::after{width:100%;height:2px;background:var(--brand-600);bottom:0;border-radius:0;}
.sk-nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.sk-burger{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-700);align-items:center;justify-content:center;}
.sk-burger:hover{border-color:var(--brand-200);color:var(--brand-600);}

/* ---------- 按钮 ---------- */
.sk-btn-main{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--brand-600);color:#fff;border:1px solid var(--brand-600);border-radius:var(--r-btn);padding:12px 28px;font-size:15px;font-weight:600;transition:background .2s ease,transform .2s ease,box-shadow .2s ease;}
.sk-btn-main:hover{background:var(--brand-500);border-color:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.sk-btn-main:active{transform:translateY(0);}
.sk-btn-sm{padding:9px 20px;font-size:14px;}
.sk-btn-line{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:#fff;color:var(--brand-600);border:1px solid var(--brand-200);border-radius:var(--r-btn);padding:12px 28px;font-size:15px;font-weight:600;transition:background .2s ease,border-color .2s ease,transform .2s ease;}
.sk-btn-line:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px);}
.sk-btn-signal{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--signal-500);color:var(--ink-900);border:1px solid var(--signal-500);border-radius:var(--r-btn);padding:12px 28px;font-size:15px;font-weight:600;transition:filter .2s ease,transform .2s ease;}
.sk-btn-signal:hover{filter:brightness(1.06);color:var(--ink-900);transform:translateY(-1px);}
.sk-btn-block{width:100%;}
.sk-link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px;color:var(--brand-600);border-bottom:1px solid transparent;padding-bottom:1px;transition:border-color .2s ease;}
.sk-link-arrow svg{transition:transform .2s ease;}
.sk-link-arrow:hover{border-bottom-color:var(--signal-500);color:var(--brand-500);}
.sk-link-arrow:hover svg{transform:translateX(3px);}

/* ---------- 通用板块 ---------- */
.sk-section{padding:var(--pad-y) 0;}
.sk-section-alt{background:var(--paper-2);}
.sk-h2{position:relative;padding-left:16px;font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700;color:var(--ink-900);}
.sk-h2::before{content:"";position:absolute;left:0;top:.32em;width:4px;height:20px;background:var(--brand-600);border-radius:2px;}
.sk-h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink-900);}
.sk-lead{max-width:760px;color:var(--muted);font-size:16px;line-height:1.85;margin-top:14px;}
.sk-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.sk-muted{color:var(--muted);font-size:13px;}

/* ---------- 页头 ---------- */
.sk-pagehead{background:linear-gradient(180deg,#F5F2FF 0%,#FBF9FF 100%);padding:36px 0 56px;border-bottom:1px solid var(--line);}
.sk-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px;}
.sk-crumb li{display:flex;align-items:center;gap:8px;}
.sk-crumb li+li::before{content:"/";color:var(--brand-200);}
.sk-crumb a{color:var(--muted);}
.sk-crumb a:hover{color:var(--brand-600);}
.sk-crumb [aria-current="page"]{color:var(--ink-500);}
.sk-pagehead-inner{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.sk-pagehead h1{font-size:clamp(27px,3.6vw,38px);line-height:1.28;font-weight:700;color:var(--ink-900);letter-spacing:0;margin:16px 0 18px;}
.sk-pagehead p{color:var(--muted);font-size:16px;line-height:1.85;max-width:620px;}
.sk-pagehead-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/10;}
.sk-pagehead-media img{width:100%;height:100%;object-fit:cover;}
.sk-pagehead-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,17,43,.55) 0%,rgba(20,17,43,.10) 100%);}
.sk-badge{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--r-pill);font-size:13px;font-weight:600;background:var(--brand-100);color:var(--brand-600);}
.sk-badge-accent{background:var(--accent-500);color:var(--ink-900);}
.sk-badge-signal{background:rgba(23,195,162,.14);color:#0C8C74;}

/* ---------- 版本对照表 ---------- */
.sk-table-scroll{overflow-x:auto;border-radius:14px;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-1);-webkit-overflow-scrolling:touch;}
.sk-table{width:100%;min-width:680px;border-collapse:collapse;font-size:15px;}
.sk-table thead th{background:var(--paper-2);color:var(--muted);font-size:13px;font-weight:600;letter-spacing:.06em;text-align:left;padding:14px 22px;white-space:nowrap;}
.sk-table tbody td{padding:18px 22px;border-top:1px solid var(--line);color:var(--text);vertical-align:top;line-height:1.7;}
.sk-table tbody tr:nth-child(even){background:#FCFBFF;}
.sk-table tbody tr:hover{background:var(--brand-100);}
.sk-table .sk-td-name{font-weight:600;color:var(--ink-900);white-space:nowrap;}
.sk-table .sk-ver{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:var(--brand-100);color:var(--brand-600);font-size:13px;font-weight:600;font-variant-numeric:tabular-nums;}
.sk-table .sk-ver.is-current{background:var(--accent-500);color:var(--ink-900);}
.sk-table-note{display:flex;align-items:center;gap:8px;margin-top:16px;font-size:13px;color:var(--muted);}

/* ---------- 设备卡片 2×2 ---------- */
.sk-device-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.sk-device-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.sk-device-card:hover{transform:translateY(-4px);border-color:var(--brand-200);box-shadow:var(--sh-2);}
.sk-device-icon{width:44px;height:44px;border-radius:12px;background:var(--brand-100);color:var(--brand-600);display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.sk-device-card h3{font-size:18px;font-weight:600;color:var(--ink-900);margin-bottom:8px;}
.sk-device-card p{font-size:14px;line-height:1.75;color:var(--muted);}
.sk-device-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.sk-chip{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--paper);color:var(--ink-500);font-size:12.5px;font-variant-numeric:tabular-nums;}

/* ---------- 时间线 ---------- */
.sk-timeline{position:relative;padding-left:34px;}
.sk-timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--brand-500),var(--brand-200));border-radius:2px;}
.sk-tl-item{position:relative;padding-bottom:30px;}
.sk-tl-item:last-child{padding-bottom:0;}
.sk-tl-item::before{content:"";position:absolute;left:-34px;top:8px;width:12px;height:12px;border-radius:50%;background:#fff;border:2px solid var(--brand-500);box-shadow:0 0 0 4px rgba(101,88,214,.10);}
.sk-tl-item:first-child::before{background:var(--brand-600);border-color:var(--brand-600);box-shadow:0 0 0 4px rgba(75,63,168,.16);}
.sk-tl-date{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.sk-tl-title{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:18px;font-weight:600;color:var(--ink-900);margin:6px 0 8px;}
.sk-tl-text{font-size:15px;line-height:1.8;color:var(--muted);max-width:760px;}

/* ---------- 图文核对区块 ---------- */
.sk-check{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;}
.sk-check-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:4/3;}
.sk-check-media img{width:100%;height:100%;object-fit:cover;}
.sk-check-list{margin-top:24px;display:grid;gap:16px;}
.sk-check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.75;color:var(--ink-500);}
.sk-check-list li svg{flex:0 0 20px;margin-top:3px;color:var(--signal-500);}
.sk-check-list strong{color:var(--ink-900);font-weight:600;}

/* ---------- FAQ ---------- */
.sk-faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.sk-faq-aside{position:sticky;top:104px;}
.sk-faq-aside p{color:var(--muted);font-size:15px;line-height:1.85;margin-top:16px;max-width:320px;}
.sk-faq .accordion-item{background:transparent;border:0;border-top:1px solid var(--line);}
.sk-faq .accordion-item:last-child{border-bottom:1px solid var(--line);}
.sk-faq .accordion-header{margin:0;}
.sk-faq .accordion-button{background:transparent;box-shadow:none;border:0;border-radius:0;padding:20px 4px;font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;}
.sk-faq .accordion-button::after{width:18px;height:18px;background-size:18px;background-position:center;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233A3268' stroke-width='1.5' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");}
.sk-faq .accordion-button:not(.collapsed){background:var(--paper-2);color:var(--brand-600);padding-left:18px;padding-right:18px;border-radius:10px;}
.sk-faq .accordion-button:not(.collapsed)::after{transform:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234B3FA8' stroke-width='1.5' stroke-linecap='round'%3E%3Cpath d='M5 12h14'/%3E%3C/svg%3E");}
.sk-faq .accordion-body{padding:4px 18px 22px;font-size:15px;line-height:1.85;color:var(--muted);}

/* ---------- CTA 条 ---------- */
.sk-cta-band{background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px),var(--grad-dark);background-size:26px 26px,cover;border-radius:20px;padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;color:#fff;}
.sk-cta-band h2{font-size:clamp(21px,2.6vw,27px);font-weight:700;line-height:1.4;color:#fff;}
.sk-cta-band p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.72);margin-top:10px;max-width:620px;}
.sk-cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.sk-cta-actions .sk-link-arrow{color:rgba(255,255,255,.88);}
.sk-cta-actions .sk-link-arrow:hover{color:#fff;border-bottom-color:var(--signal-500);}

/* ---------- 页脚 ---------- */
.sk-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0;}
.sk-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.sk-footer-logo{font-size:20px;font-weight:700;color:#fff;letter-spacing:.01em;}
.sk-footer-sub{font-size:12px;color:rgba(255,255,255,.5);letter-spacing:.08em;margin-top:4px;}
.sk-footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin-top:16px;max-width:280px;}
.sk-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.sk-footer-links{display:grid;gap:10px;}
.sk-footer-links a{font-size:14px;color:rgba(255,255,255,.72);}
.sk-footer-links a:hover{color:#fff;}
.sk-footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.62);}
.sk-footer-contact a{color:var(--signal-500);}
.sk-footer-contact a:hover{color:#fff;}
.sk-footer-divider{height:1px;background:rgba(255,255,255,.12);margin:40px 0 20px;}
.sk-footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5);}
.sk-to-top{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:rgba(255,255,255,.72);}
.sk-to-top:hover{color:#fff;}

/* ---------- 抽屉 ---------- */
.sk-drawer{background:#fff;width:min(340px,86vw);}
.sk-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.sk-drawer-title{font-size:16px;font-weight:700;color:var(--ink-900);}
.sk-drawer .offcanvas-body{padding:12px 20px 28px;display:flex;flex-direction:column;}
.sk-drawer-nav{display:grid;margin-bottom:auto;}
.sk-drawer-nav a{display:block;padding:14px 2px;font-size:15px;color:var(--ink-500);border-bottom:1px solid var(--line);}
.sk-drawer-nav a.is-active{color:var(--brand-600);font-weight:600;}
.sk-drawer .sk-btn-main{margin-top:24px;}
.sk-drawer .btn-close{opacity:.55;}
.sk-drawer .btn-close:hover{opacity:.9;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--pad-y:64px;}
  .sk-nav-list{gap:18px;}
  .sk-nav-list a{font-size:14px;}
  .sk-pagehead-inner{gap:32px;}
}
@media (max-width:991px){
  .sk-nav-list{display:none;}
  .sk-burger{display:inline-flex;}
  .sk-nav-actions{margin-left:auto;}
  .sk-pagehead-inner{grid-template-columns:1fr;}
  .sk-pagehead-media{aspect-ratio:16/9;order:-1;}
  .sk-check{grid-template-columns:1fr;gap:28px;}
  .sk-check-media{aspect-ratio:16/9;}
  .sk-faq-wrap{grid-template-columns:1fr;gap:24px;}
  .sk-faq-aside{position:static;}
  .sk-footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--pad-y:52px;}
  .sk-topbar-tip{display:none;}
  .sk-nav{gap:12px;min-height:60px;}
  .sk-logo-main{font-size:18px;}
  .sk-nav-list a{line-height:60px;}
  .sk-device-grid{grid-template-columns:1fr;}
  .sk-cta-band{padding:32px 24px;}
  .sk-cta-actions{width:100%;}
  .sk-cta-actions .sk-btn-signal{width:100%;max-width:320px;}
  .sk-footer-grid{grid-template-columns:1fr;gap:28px;}
  .sk-footer{padding:48px 0 24px;}
  .sk-footer-desc{max-width:none;}
}
@media (max-width:575px){
  body{font-size:15.5px;}
  .sk-topbar-right a:not(.sk-topbar-btn){display:none;}
  .sk-pagehead{padding:24px 0 40px;}
  .sk-pagehead h1{margin:14px 0;}
  .sk-btn-main,.sk-btn-line,.sk-btn-signal{width:100%;max-width:320px;}
  .sk-nav-actions .sk-btn-sm{display:none;}
  .sk-timeline{padding-left:26px;}
  .sk-tl-item::before{left:-26px;}
  .sk-device-card{padding:22px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  .sk-device-card:hover,.sk-btn-main:hover,.sk-btn-line:hover,.sk-btn-signal:hover{transform:none;}
}

/* roulang page: category4 */
:root{
  --ink-900:#14112B; --ink-700:#241E45; --ink-500:#3A3268;
  --brand-600:#4B3FA8; --brand-500:#6558D6; --brand-200:#CFC8F5; --brand-100:#EDEAFF;
  --signal-500:#17C3A2; --accent-500:#FFB03A;
  --paper:#FBF9FF; --paper-2:#F3F0FA; --line:#E4DFF2;
  --text:#1F1B33; --muted:#6A6483;
  --r-card:16px; --r-img:12px; --r-btn:10px;
  --sh-1:0 1px 2px rgba(20,17,43,.06);
  --sh-2:0 12px 28px -12px rgba(20,17,43,.18);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--signal-500);outline-offset:2px}
.container{width:100%;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto;max-width:1200px}
@media (min-width:1400px){.container{max-width:1240px}}
.sk-sec{padding:88px 0}
@media (max-width:991px){.sk-sec{padding:64px 0}}
@media (max-width:575px){.sk-sec{padding:44px 0}}
.sk-h2{position:relative;padding-left:16px;font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700;color:var(--ink-900);letter-spacing:0}
.sk-h2::before{content:"";position:absolute;left:0;top:.34em;width:4px;height:20px;border-radius:2px;background:var(--brand-600)}
.sk-h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink-900)}
.sk-sub{font-size:15px;line-height:1.85;color:var(--muted);margin-top:10px}

/* 顶部信息条 */
.sk-topbar{background:var(--ink-900);color:rgba(255,255,255,.72);font-size:13px;height:38px;display:flex;align-items:center}
.sk-topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.sk-topbar-left{display:flex;align-items:center;gap:12px;min-width:0}
.sk-topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em}
.sk-topbar-tip{color:rgba(255,255,255,.62);white-space:nowrap}
.sk-topbar-right{display:flex;align-items:center;gap:14px}
.sk-topbar-link{color:rgba(255,255,255,.82);font-size:13px}
.sk-topbar-link:hover{color:var(--signal-500)}
.sk-topbar-btn{border:1px solid rgba(255,255,255,.32);border-radius:999px;padding:4px 14px;font-size:12px;color:#fff;line-height:1.6}
.sk-topbar-btn:hover{border-color:var(--signal-500);color:var(--signal-500)}
@media (max-width:575px){.sk-topbar-tip{display:none}}

/* 主导航 */
.sk-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid transparent;transition:border-color .25s ease,box-shadow .25s ease}
.sk-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.sk-nav{display:flex;align-items:center;gap:20px;min-height:64px}
.sk-logo{display:flex;flex-direction:column;justify-content:center;line-height:1.2;color:var(--ink-900)}
.sk-logo-main{font-size:19px;font-weight:700;letter-spacing:.02em;color:var(--ink-900)}
.sk-logo-sub{font-size:12px;color:var(--muted);font-weight:400;margin-top:3px}
.sk-nav-list{display:flex;align-items:center;gap:2px;margin-left:auto}
.sk-nav-list a{position:relative;display:block;line-height:64px;padding:0 12px;font-size:15px;color:var(--ink-700)}
.sk-nav-list a::after{content:"";position:absolute;left:12px;right:12px;bottom:16px;height:3px;border-radius:2px;background:var(--signal-500);transform:scaleX(0);transform-origin:center;transition:transform .22s ease}
.sk-nav-list a:hover{color:var(--brand-600)}
.sk-nav-list a:hover::after{transform:scaleX(1)}
.sk-nav-list a.is-active{color:var(--brand-600);font-weight:600}
.sk-nav-list a.is-active::after{background:var(--brand-600);height:2px;transform:scaleX(1)}
.sk-nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.sk-burger{display:none;width:40px;height:40px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-700)}
.sk-burger:hover{border-color:var(--brand-200);color:var(--brand-600)}
@media (max-width:991px){
  .sk-nav-list{display:none}
  .sk-nav-actions .sk-btn-main{display:none}
  .sk-burger{display:inline-flex}
  .sk-nav{justify-content:space-between}
}

/* 按钮 */
.sk-btn-main,.sk-btn-line,.sk-btn-signal{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);font-weight:600;font-size:15px;padding:12px 28px;border:1px solid transparent;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .18s ease,box-shadow .2s ease;text-align:center}
.sk-btn-main{background:var(--brand-600);color:#fff}
.sk-btn-main:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.sk-btn-main:active{transform:translateY(0);box-shadow:var(--sh-1)}
.sk-btn-line{background:transparent;border-color:var(--brand-200);color:var(--brand-600)}
.sk-btn-line:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-600)}
.sk-btn-line:active{transform:translateY(0)}
.sk-btn-signal{background:var(--signal-500);color:var(--ink-900)}
.sk-btn-signal:hover{background:#12ad90;color:var(--ink-900);transform:translateY(-1px)}
.sk-btn-signal:active{transform:translateY(0)}
.sk-btn-sm{padding:9px 20px;font-size:14px;line-height:1.4}
@media (max-width:575px){
  .sk-btn-main,.sk-btn-line,.sk-btn-signal{width:100%;max-width:320px}
}

/* 抽屉 */
.sk-offcanvas{background:#fff;border-left:1px solid var(--line);width:320px}
.sk-offcanvas .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.sk-offcanvas .offcanvas-body{padding:8px 20px 24px}
.sk-drawer-nav a{display:block;padding:14px 0;font-size:15px;color:var(--ink-700);border-bottom:1px solid var(--line)}
.sk-drawer-nav a.is-active{color:var(--brand-600);font-weight:600}
.sk-drawer-cta{margin-top:20px}

/* 面包屑 */
.sk-crumb{padding:20px 0 0;font-size:13px;color:var(--muted)}
.sk-crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.sk-crumb li{display:flex;align-items:center;gap:6px}
.sk-crumb li+li::before{content:"/";color:var(--brand-200)}
.sk-crumb a{color:var(--muted)}
.sk-crumb a:hover{color:var(--brand-600)}
.sk-crumb [aria-current="page"]{color:var(--ink-700);font-weight:600}

/* 页头 */
.sk-pagehead{padding:36px 0 56px}
.sk-pagehead-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.sk-pagehead h1{font-size:clamp(30px,4.2vw,44px);line-height:1.25;font-weight:700;color:var(--ink-900);letter-spacing:0}
.sk-pagehead .sk-lead{margin-top:16px;font-size:16px;line-height:1.85;color:var(--muted);max-width:560px}
.sk-pagehead-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.sk-badge{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;font-size:13px;line-height:1;font-weight:500;background:var(--brand-100);color:var(--brand-600)}
.sk-badge-accent{background:var(--accent-500);color:var(--ink-900)}
.sk-pagehead-figure{margin:0}
.sk-pagehead-figure img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1)}
.sk-pagehead-figure figcaption{margin-top:10px;font-size:13px;color:var(--muted)}
@media (max-width:991px){
  .sk-pagehead-grid{grid-template-columns:1fr;gap:28px}
  .sk-pagehead{padding:28px 0 40px}
}

/* 搜索与选项卡 */
.sk-searchwrap{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:32px 0}
.sk-searchbar{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:10px;box-shadow:var(--sh-1);max-width:820px}
.sk-searchbar .sk-search-icon{flex:0 0 auto;color:var(--muted);margin-left:10px;display:flex}
.sk-searchbar input{flex:1 1 auto;height:52px;border:0;background:transparent;font-size:16px;color:var(--text);padding:0 6px;letter-spacing:.01em}
.sk-searchbar input:focus{outline:2px solid var(--signal-500);outline-offset:2px;border-radius:8px}
.sk-searchbar button{flex:0 0 auto;padding:12px 26px}
.sk-searchnote{margin-top:12px;font-size:13px;color:var(--muted)}
.sk-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.sk-pills .nav-link{border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink-700);font-size:14px;padding:8px 18px;line-height:1.5;transition:all .2s ease}
.sk-pills .nav-link:hover{border-color:var(--brand-200);color:var(--brand-600)}
.sk-pills .nav-link.active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;font-weight:600}
@media (max-width:575px){
  .sk-searchbar{flex-wrap:wrap;padding:12px}
  .sk-searchbar input{height:46px;min-width:0}
  .sk-searchbar button{width:100%;max-width:none}
}

/* 自查卡 */
.sk-check-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
.sk-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.sk-card:hover{border-color:var(--brand-200);transform:translateY(-4px);box-shadow:var(--sh-2)}
.sk-check-head{display:flex;align-items:center;gap:12px}
.sk-check-ic{flex:0 0 auto;width:36px;height:36px;border-radius:10px;background:var(--brand-100);color:var(--brand-600);display:flex;align-items:center;justify-content:center}
.sk-check-grid p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--muted)}
@media (max-width:767px){.sk-check-grid{grid-template-columns:1fr}}

/* FAQ 分组 */
.sk-faq-group{padding-top:8px}
.sk-faq-group+.sk-faq-group{margin-top:52px}
.sk-group-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}
.sk-group-count{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.sk-accordion .accordion-item{border:0;border-top:1px solid var(--line);background:transparent;border-radius:0}
.sk-accordion .accordion-item:last-child{border-bottom:1px solid var(--line)}
.sk-accordion .accordion-button{position:relative;width:100%;background:transparent;box-shadow:none;color:var(--ink-900);font-size:16px;font-weight:600;line-height:1.6;padding:20px 56px 20px 4px;text-align:left}
.sk-accordion .accordion-button:not(.collapsed){background:var(--paper-2);color:var(--brand-600);box-shadow:none;padding-left:16px}
.sk-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--signal-500);outline-offset:-2px;border-radius:8px}
.sk-accordion .accordion-button::after{content:"";position:absolute;right:24px;top:50%;width:14px;height:2px;border-radius:2px;background:var(--brand-600);transform:translateY(-50%);background-image:none;transition:background .2s ease}
.sk-accordion .accordion-button::before{content:"";position:absolute;right:30px;top:50%;width:2px;height:14px;border-radius:2px;background:var(--brand-600);transform:translateY(-50%);transition:transform .22s ease,opacity .22s ease}
.sk-accordion .accordion-button:not(.collapsed)::before{opacity:0;transform:translateY(-50%) rotate(90deg)}
.sk-accordion .accordion-body{padding:4px 16px 22px;font-size:15px;line-height:1.9;color:var(--muted)}
.sk-accordion .accordion-body strong{color:var(--ink-700);font-weight:600}
.sk-accordion .accordion-body ul{margin-top:10px}
.sk-accordion .accordion-body li{position:relative;padding-left:16px;margin-top:6px}
.sk-accordion .accordion-body li::before{content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:50%;background:var(--brand-200)}
.sk-faq-empty{display:none;border:1px dashed var(--line);border-radius:var(--r-card);padding:32px 24px;text-align:center;background:var(--paper-2);margin-top:24px}
.sk-faq-empty svg{color:var(--brand-200)}
.sk-faq-empty p{margin-top:12px;font-size:14px;color:var(--muted)}

/* CTA */
.sk-cta-sec{padding:0 0 88px}
@media (max-width:991px){.sk-cta-sec{padding-bottom:64px}}
@media (max-width:575px){.sk-cta-sec{padding-bottom:44px}}
.sk-cta{position:relative;overflow:hidden;border-radius:var(--r-card);padding:48px;background:linear-gradient(160deg,#14112B 0%,#241E45 52%,#2E2560 100%);color:rgba(255,255,255,.78)}
.sk-cta::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;background-image:radial-gradient(#fff 1px,transparent 1px),radial-gradient(#fff 1px,transparent 1px);background-size:64px 64px,96px 96px;background-position:0 0,32px 32px}
.sk-cta-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start}
.sk-cta h2{font-size:clamp(22px,3vw,28px);line-height:1.35;font-weight:700;color:#fff}
.sk-cta p.sk-cta-desc{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.72)}
.sk-cta-list{margin-top:22px;display:grid;gap:12px}
.sk-cta-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.7;color:rgba(255,255,255,.78)}
.sk-cta-list svg{flex:0 0 auto;margin-top:3px;color:var(--signal-500)}
.sk-form-card{background:#fff;border-radius:var(--r-card);padding:26px;border:1px solid rgba(255,255,255,.10)}
.sk-form-card h3{font-size:17px;font-weight:600;color:var(--ink-900)}
.sk-form-card .sk-form-tip{margin-top:6px;font-size:13px;color:var(--muted)}
.sk-field{margin-top:18px}
.sk-field label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:8px}
.sk-field input,.sk-field select,.sk-field textarea{width:100%;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 14px;font-size:15px;color:var(--text);background:#fff;transition:border-color .2s ease,box-shadow .2s ease;font-family:inherit}
.sk-field textarea{height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.sk-field input:focus,.sk-field select:focus,.sk-field textarea:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(101,88,214,.15)}
.sk-field input::placeholder,.sk-field textarea::placeholder{color:#9C96B4}
.sk-form-card .sk-btn-main{width:100%;margin-top:22px}
@media (max-width:991px){
  .sk-cta{padding:32px 24px}
  .sk-cta-grid{grid-template-columns:1fr;gap:28px}
}

/* 页脚 */
.sk-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 0}
.sk-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.sk-footer-logo{font-size:19px;font-weight:700;color:#fff;letter-spacing:.02em}
.sk-footer-sub{font-size:12px;color:rgba(255,255,255,.55);margin-top:4px}
.sk-footer-desc{margin-top:14px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:280px}
.sk-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.sk-footer-links li a{font-size:14px;line-height:2.1;color:rgba(255,255,255,.72)}
.sk-footer-links li a:hover{color:var(--signal-500)}
.sk-footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.68)}
.sk-footer-contact a{color:rgba(255,255,255,.86);border-bottom:1px solid rgba(255,255,255,.28)}
.sk-footer-contact a:hover{color:var(--signal-500);border-color:var(--signal-500)}
.sk-footer-divider{height:1px;background:rgba(255,255,255,.12);margin:40px 0 0}
.sk-footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0 22px;font-size:13px;color:rgba(255,255,255,.55);flex-wrap:wrap}
.sk-to-top{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:rgba(255,255,255,.72)}
.sk-to-top:hover{color:var(--signal-500)}
@media (max-width:991px){.sk-footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575px){.sk-footer-grid{grid-template-columns:1fr;gap:28px}.sk-footer{padding-top:44px}}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
  .sk-card:hover{transform:none}
  .sk-btn-main:hover,.sk-btn-signal:hover{transform:none}
}

/* roulang page: category5 */
:root{
  --ink-900:#14112B;--ink-700:#241E45;--ink-500:#3A3268;
  --brand-600:#4B3FA8;--brand-500:#6558D6;--brand-200:#CFC8F5;--brand-100:#EDEAFF;
  --signal-500:#17C3A2;--accent-500:#FFB03A;
  --paper:#FBF9FF;--paper-2:#F3F0FA;--line:#E4DFF2;
  --text:#1F1B33;--muted:#6A6483;
  --radius-card:16px;--radius-img:12px;--radius-btn:10px;
  --shadow-1:0 1px 2px rgba(20,17,43,.06);
  --shadow-2:0 12px 28px -12px rgba(20,17,43,.18);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0}
button{font-family:inherit}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--signal-500);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:1400px){.container{max-width:1240px}}
.sk-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- 顶部信息条 ---------- */
.sk-topbar{background:var(--ink-900);color:rgba(255,255,255,.72);font-size:13px;height:38px;display:flex;align-items:center}
.sk-topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;height:38px}
.sk-topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.sk-topbar-domain{color:#fff;font-weight:600;letter-spacing:.04em;font-variant-numeric:tabular-nums}
.sk-topbar-tip{color:rgba(255,255,255,.6);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sk-topbar-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.sk-topbar-link{color:rgba(255,255,255,.82);border-bottom:1px solid transparent;transition:color .18s,border-color .18s}
.sk-topbar-link:hover{color:var(--signal-500);border-bottom-color:var(--signal-500)}

/* ---------- 按钮体系 ---------- */
.sk-btn-main,.sk-btn-line,.sk-btn-signal{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:600;font-size:15px;
  padding:12px 28px;line-height:1.3;cursor:pointer;border:1px solid transparent;
  transition:background-color .18s,color .18s,border-color .18s,transform .18s,box-shadow .18s;
}
.sk-btn-main{background:var(--brand-600);color:#fff}
.sk-btn-main:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.sk-btn-main:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.sk-btn-line{background:transparent;border-color:var(--brand-200);color:var(--brand-600)}
.sk-btn-line:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-600)}
.sk-btn-line:active{background:var(--brand-200)}
.sk-btn-signal{background:var(--signal-500);color:var(--ink-900)}
.sk-btn-signal:hover{background:#12ad90;color:var(--ink-900);transform:translateY(-1px);box-shadow:0 12px 28px -14px rgba(23,195,162,.7)}
.sk-btn-signal:active{transform:translateY(0)}
.sk-btn-sm{padding:9px 20px;font-size:14px}
.sk-btn-xs{padding:6px 14px;font-size:13px;border-radius:8px}
.sk-link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:14px;border-bottom:1px solid transparent;padding-bottom:1px;transition:border-color .18s,color .18s}
.sk-link-arrow svg{transition:transform .18s}
.sk-link-arrow:hover{border-bottom-color:var(--signal-500);color:var(--brand-500)}
.sk-link-arrow:hover svg{transform:translateX(3px)}

/* ---------- 导航 ---------- */
.sk-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s;
}
.sk-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.sk-nav{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px}
.sk-logo{display:flex;flex-direction:column;line-height:1.15;flex-shrink:0}
.sk-logo-main{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:.02em}
.sk-logo-sub{font-size:12px;color:var(--muted);margin-top:3px;letter-spacing:.06em}
.sk-nav-list{display:flex;align-items:center;gap:4px;list-style:none;padding:0}
.sk-nav-list a{
  position:relative;display:block;padding:0 13px;line-height:64px;
  font-size:15px;color:var(--ink-700);transition:color .18s;
}
.sk-nav-list a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:15px;height:3px;border-radius:2px;
  background:var(--signal-500);transform:scaleX(0);transform-origin:left;transition:transform .2s;
}
.sk-nav-list a:hover{color:var(--brand-600)}
.sk-nav-list a:hover::after{transform:scaleX(1)}
.sk-nav-list a.is-active{color:var(--brand-600);font-weight:600}
.sk-nav-list a.is-active::after{transform:scaleX(1);height:2px;background:var(--brand-600)}
.sk-nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.sk-burger{
  display:none;align-items:center;justify-content:center;width:40px;height:40px;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-700);
  transition:border-color .18s,color .18s,background-color .18s;
}
.sk-burger:hover{border-color:var(--brand-200);color:var(--brand-600);background:var(--brand-100)}

/* 抽屉 */
.sk-drawer{background:#fff;width:320px;max-width:88vw}
.sk-drawer .offcanvas-header{
  padding:18px 20px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.sk-drawer-title{font-size:16px;font-weight:700;color:var(--ink-900)}
.sk-drawer-close{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-700);
}
.sk-drawer-close:hover{border-color:var(--brand-200);color:var(--brand-600)}
.sk-drawer-body{padding:10px 20px 20px}
.sk-drawer-list{list-style:none;padding:0;margin:0}
.sk-drawer-list a{
  display:block;padding:14px 0;font-size:15px;color:var(--ink-700);
  border-bottom:1px solid var(--line);transition:color .18s,padding-left .18s;
}
.sk-drawer-list a:hover{color:var(--brand-600);padding-left:6px}
.sk-drawer-list a.is-active{color:var(--brand-600);font-weight:600}
.sk-drawer-foot{padding:0 20px 26px}
.sk-drawer-foot .sk-btn-main{width:100%}

/* ---------- 面包屑 ---------- */
.sk-crumb{padding:18px 0 0;font-size:13px;color:var(--muted)}
.sk-crumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0}
.sk-crumb li{display:flex;align-items:center;gap:8px}
.sk-crumb li+li::before{content:"/";color:var(--line)}
.sk-crumb a{color:var(--muted)}
.sk-crumb a:hover{color:var(--brand-600)}
.sk-crumb [aria-current="page"]{color:var(--ink-700);font-weight:600}

/* ---------- 单列横幅 ---------- */
.sk-banner{
  position:relative;overflow:hidden;margin-top:20px;
  background:linear-gradient(160deg,#14112B 0%,#241E45 55%,#2E2560 100%);
  border-radius:20px;color:#fff;
}
.sk-banner::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center right;opacity:.42;
}
.sk-banner::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.55) .8px,transparent .9px);
  background-size:64px 64px;opacity:.06;pointer-events:none;
}
.sk-banner-inner{position:relative;z-index:2;padding:56px 44px 48px;max-width:820px;
  background:linear-gradient(90deg,rgba(20,17,43,.82) 0%,rgba(20,17,43,.52) 62%,rgba(20,17,43,.06) 100%);
}
.sk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.12em;
  color:var(--signal-500);text-transform:uppercase;margin-bottom:16px;font-weight:600;
}
.sk-eyebrow::before{content:"";width:22px;height:1px;background:var(--signal-500);display:inline-block}
.sk-banner h1{
  font-size:clamp(30px,4.2vw,44px);line-height:1.25;font-weight:700;letter-spacing:0;color:#fff;
}
.sk-banner-sub{
  margin-top:16px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.78);max-width:640px;
}
.sk-banner-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.sk-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1;
}
.sk-badge-brand{background:var(--brand-100);color:var(--brand-600)}
.sk-badge-accent{background:var(--accent-500);color:var(--ink-900)}
.sk-badge-ghost{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.2)}
.sk-banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.sk-banner .sk-btn-line{border-color:rgba(255,255,255,.34);color:#fff}
.sk-banner .sk-btn-line:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}

/* ---------- 通用板块 ---------- */
.sk-section{padding:88px 0}
.sk-section-tight{padding:64px 0}
.sk-section-alt{background:var(--paper-2)}
.sk-h2{
  position:relative;padding-left:16px;font-size:clamp(22px,3vw,30px);line-height:1.35;
  font-weight:700;color:var(--ink-900);
}
.sk-h2::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:20px;border-radius:2px;background:var(--brand-600);
}
.sk-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sk-section-desc{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.8;max-width:760px}
.sk-h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink-900)}
.sk-body{font-size:16px;line-height:1.85;color:var(--text);max-width:760px}

/* ---------- 纵向优惠阶梯 ---------- */
.sk-ladder{position:relative;padding-left:4px}
.sk-ladder::before{
  content:"";position:absolute;left:27px;top:26px;bottom:26px;width:1px;
  background:repeating-linear-gradient(to bottom,var(--brand-200) 0 7px,transparent 7px 15px);
}
.sk-step{position:relative;padding:22px 24px 22px 76px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);margin-bottom:20px;box-shadow:var(--shadow-1);
  transition:border-color .2s,transform .2s,box-shadow .2s;
}
.sk-step:hover{border-color:var(--brand-200);transform:translateY(-3px);box-shadow:var(--shadow-2)}
.sk-step:last-child{margin-bottom:0}
.sk-step-no{
  position:absolute;left:14px;top:22px;width:48px;height:48px;border-radius:50%;
  background:var(--brand-100);color:var(--brand-600);display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.sk-step.is-current{border-color:var(--accent-500);box-shadow:0 12px 28px -16px rgba(255,176,58,.85)}
.sk-step.is-current .sk-step-no{background:var(--accent-500);color:var(--ink-900)}
.sk-step-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.sk-step-text{font-size:15px;line-height:1.8;color:var(--muted);max-width:720px}
.sk-step-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:14px;padding-top:14px;border-top:1px dashed var(--line)}
.sk-meta-item{font-size:13px;color:var(--muted)}
.sk-meta-item strong{color:var(--ink-700);font-weight:600;font-variant-numeric:tabular-nums}

/* ---------- 套餐卡 ---------- */
.sk-plans{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.sk-plan{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 26px;display:flex;flex-direction:column;
  transition:border-color .2s,transform .2s,box-shadow .2s;
}
.sk-plan:hover{border-color:var(--brand-200);transform:translateY(-4px);box-shadow:var(--shadow-2)}
.sk-plan.is-recommended{border:2px solid var(--brand-500);background:linear-gradient(180deg,var(--brand-100) 0%,#fff 42%)}
.sk-plan-flag{position:absolute;top:-12px;right:22px}
.sk-plan-name{font-size:20px;font-weight:700;color:var(--ink-900)}
.sk-plan-note{margin-top:6px;font-size:13px;color:var(--muted)}
.sk-plan-price{margin-top:18px;display:flex;align-items:baseline;gap:6px;font-variant-numeric:tabular-nums}
.sk-plan-price .num{font-size:34px;font-weight:700;color:var(--brand-600);line-height:1.1}
.sk-plan-price .unit{font-size:14px;color:var(--muted)}
.sk-plan-list{list-style:none;padding:0;margin:22px 0 26px;display:grid;gap:12px}
.sk-plan-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;color:var(--text)}
.sk-plan-list svg{flex-shrink:0;margin-top:4px;color:var(--signal-500)}
.sk-plan-foot{margin-top:auto}
.sk-plan-foot .sk-btn-main,.sk-plan-foot .sk-btn-line{width:100%}

/* ---------- 限时条 ---------- */
.sk-limited{
  position:relative;overflow:hidden;border-radius:18px;color:#fff;
  background:linear-gradient(160deg,#14112B 0%,#241E45 52%,#2E2560 100%);
  padding:40px 40px;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);gap:36px;align-items:center;
}
.sk-limited::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.6) .7px,transparent .9px);
  background-size:48px 48px;opacity:.07;
}
.sk-limited-left,.sk-limited-right{position:relative;z-index:2}
.sk-limited-title{font-size:22px;font-weight:700;color:#fff;line-height:1.4}
.sk-limited-text{margin-top:10px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72)}
.sk-countdown{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.sk-count-item{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:12px;padding:12px 4px;text-align:center;
}
.sk-count-num{font-size:24px;font-weight:700;color:#fff;line-height:1.2;font-variant-numeric:tabular-nums}
.sk-count-label{font-size:12px;color:rgba(255,255,255,.6);margin-top:2px}
.sk-limited-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px}
.sk-limited-fine{margin-top:14px;font-size:12.5px;color:rgba(255,255,255,.55);line-height:1.7}

/* ---------- 表单 ---------- */
.sk-form-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:36px;align-items:start}
.sk-form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:28px 26px;box-shadow:var(--shadow-1)}
.sk-field{margin-bottom:20px}
.sk-field:last-of-type{margin-bottom:24px}
.sk-label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:8px}
.sk-input{
  width:100%;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;
  padding:0 14px;font-size:15px;color:var(--text);line-height:1.4;
  transition:border-color .18s,box-shadow .18s;
}
textarea.sk-input{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
.sk-input::placeholder{color:#A9A3BE}
.sk-input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(101,88,214,.15)}
.sk-form-note{font-size:13px;color:var(--muted);line-height:1.7;margin-top:14px}
.sk-aside-list{list-style:none;padding:0;display:grid;gap:16px;margin-bottom:24px}
.sk-aside-list li{display:flex;gap:12px;font-size:14.5px;line-height:1.75;color:var(--text)}
.sk-aside-list svg{flex-shrink:0;margin-top:4px;color:var(--brand-600)}
.sk-aside-note{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:16px 18px;font-size:13.5px;color:var(--muted);line-height:1.8;
}
.sk-aside-note strong{color:var(--ink-700);font-weight:600}
.sk-aside-img{border-radius:var(--radius-img);overflow:hidden;margin-bottom:22px;border:1px solid var(--line)}
.sk-aside-img img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}

/* ---------- FAQ ---------- */
.sk-faq-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,7fr);gap:44px;align-items:start}
.sk-faq-intro{position:sticky;top:92px}
.sk-faq .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.sk-faq .accordion-item:first-of-type{border-top:1px solid var(--line)}
.sk-faq .accordion-button{
  background:transparent;color:var(--ink-900);font-size:16px;font-weight:600;line-height:1.6;
  padding:18px 48px 18px 16px;box-shadow:none;border-radius:10px 10px 0 0;
  transition:background-color .18s,color .18s;
}
.sk-faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--signal-500);outline-offset:-2px}
.sk-faq .accordion-button:not(.collapsed){background:var(--paper-2);color:var(--brand-600)}
.sk-faq .accordion-button::after{
  width:18px;height:18px;background-size:18px 18px;right:16px;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236558D6' stroke-width='1.5' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
}
.sk-faq .accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234B3FA8' stroke-width='1.5' stroke-linecap='round'%3E%3Cpath d='M5 12h14'/%3E%3C/svg%3E");
}
.sk-faq .accordion-body{
  background:var(--paper-2);color:var(--muted);font-size:15px;line-height:1.9;
  padding:2px 20px 22px;border-radius:0 0 10px 10px;
}

/* ---------- 收尾 CTA ---------- */
.sk-cta-band{
  background:linear-gradient(160deg,#14112B 0%,#241E45 58%,#2E2560 100%);
  border-radius:18px;padding:36px 40px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.sk-cta-band h2{font-size:22px;font-weight:700;line-height:1.45;color:#fff;padding:0}
.sk-cta-band p{margin-top:8px;font-size:14.5px;color:rgba(255,255,255,.72);max-width:620px}
.sk-cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.sk-cta-band .sk-btn-line{border-color:rgba(255,255,255,.34);color:#fff}
.sk-cta-band .sk-btn-line:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}

/* ---------- 页脚 ---------- */
.sk-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:88px}
.sk-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.sk-footer-logo{font-size:19px;font-weight:700;color:#fff;letter-spacing:.02em}
.sk-footer-sub{font-size:12px;color:rgba(255,255,255,.5);margin-top:4px;letter-spacing:.06em}
.sk-footer-desc{margin-top:16px;font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:300px}
.sk-footer h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.sk-footer-links{list-style:none;padding:0;display:grid;gap:10px}
.sk-footer-links a{font-size:13.5px;color:rgba(255,255,255,.68);transition:color .18s,padding-left .18s;display:inline-block}
.sk-footer-links a:hover{color:var(--signal-500);padding-left:4px}
.sk-footer-contact{font-size:13.5px;line-height:2;color:rgba(255,255,255,.68)}
.sk-footer-contact a{color:var(--signal-500)}
.sk-footer-contact a:hover{text-decoration:underline}
.sk-footer-divider{height:1px;background:rgba(255,255,255,.12);margin:40px 0 20px}
.sk-footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:rgba(255,255,255,.52);flex-wrap:wrap}
.sk-to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.72);transition:color .18s}
.sk-to-top:hover{color:var(--signal-500)}
.sk-to-top svg{transition:transform .18s}
.sk-to-top:hover svg{transform:translateY(-2px)}

/* ---------- 响应式 ---------- */
@media(max-width:1199px){
  .sk-faq-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:32px}
  .sk-footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:28px}
}
@media(max-width:991px){
  .sk-section{padding:64px 0}
  .sk-section-tight{padding:48px 0}
  .sk-nav-list{display:none}
  .sk-burger{display:inline-flex}
  .sk-banner-inner{padding:44px 28px 40px;max-width:100%;
    background:linear-gradient(90deg,rgba(20,17,43,.86) 0%,rgba(20,17,43,.62) 100%)}
  .sk-limited{grid-template-columns:minmax(0,1fr);gap:24px;padding:32px 26px}
  .sk-form-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .sk-plans{grid-template-columns:minmax(0,1fr)}
  .sk-faq-grid{grid-template-columns:minmax(0,1fr);gap:24px}
  .sk-faq-intro{position:static}
  .sk-footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .sk-cta-band{padding:30px 26px}
  .sk-footer{margin-top:64px;padding-top:52px}
}
@media(max-width:767px){
  .sk-topbar-tip{display:none}
  .sk-nav-actions .sk-btn-main{display:none}
  .sk-cta-band h2{font-size:20px}
  .sk-cta-actions{width:100%}
  .sk-cta-actions .sk-btn-main,.sk-cta-actions .sk-btn-line{flex:1 1 160px}
  .sk-step{padding:20px 18px 20px 18px}
  .sk-step-no{position:static;width:40px;height:40px;font-size:14px;margin-bottom:12px}
  .sk-ladder{padding-left:0}
  .sk-ladder::before{display:none}
  .sk-plan{padding:24px 20px}
}
@media(max-width:575px){
  .sk-section{padding:44px 0}
  .sk-section-tight{padding:36px 0}
  .sk-topbar .container{justify-content:space-between}
  .sk-banner-inner{padding:34px 20px 32px}
  .sk-banner-sub{font-size:15.5px}
  .sk-banner-actions .sk-btn-main,.sk-banner-actions .sk-btn-line{width:100%;max-width:320px}
  .sk-limited{padding:26px 20px}
  .sk-countdown{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}
  .sk-count-num{font-size:19px}
  .sk-count-item{padding:9px 2px}
  .sk-form-card{padding:22px 18px}
  .sk-footer-grid{grid-template-columns:minmax(0,1fr)}
  .sk-footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .sk-cta-band{padding:26px 20px}
  .sk-form-grid .sk-btn-main{width:100%}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .sk-step:hover,.sk-plan:hover,.sk-btn-main:hover,.sk-btn-line:hover,.sk-btn-signal:hover{transform:none}
}