/* roulang page: index */
:root{
  --sk-void:#0B0A14;
  --sk-deep:#14112B;
  --sk-surface:#1B1738;
  --sk-surface-2:#221D45;
  --sk-line:rgba(255,255,255,.08);
  --sk-line-strong:rgba(255,255,255,.16);
  --sk-ink:#F5F3EF;
  --sk-ink-2:#B7B1CB;
  --sk-ink-3:#7C7691;
  --sk-primary:#7A5CFF;
  --sk-primary-soft:rgba(122,92,255,.14);
  --sk-accent:#35E0B0;
  --sk-warm:#F2A93B;
  --r-card:20px;
  --r-img:14px;
  --r-input:12px;
  --r-pill:999px;
  --sh-card:0 1px 0 rgba(255,255,255,.06), 0 20px 40px -24px rgba(0,0,0,.8);
  --sh-hover:0 24px 60px -28px rgba(122,92,255,.55);
  --sh-float:0 30px 80px -30px rgba(0,0,0,.9);
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px; --sp-7:64px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --dur:240ms;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--sk-void);
  color:var(--sk-ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),opacity var(--dur) var(--ease);}
a:hover{color:var(--sk-ink);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--sk-ink);letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--sk-primary);outline-offset:2px;border-radius:6px;}
.sk-container,.container{max-width:1280px;padding-left:16px;padding-right:16px;margin:0 auto;width:100%;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ===== 顶部导航 ===== */
.sk-header{
  position:sticky;top:0;z-index:1030;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease);
}
.sk-header.is-scrolled{
  background:rgba(11,10,20,.86);
  border-bottom-color:var(--sk-line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.sk-nav-wrap{display:flex;align-items:center;gap:var(--sp-4);height:72px;}
.sk-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.sk-logo-mark{width:34px;height:34px;flex:0 0 auto;}
.sk-logo-text{font-size:17px;font-weight:800;letter-spacing:.01em;white-space:nowrap;}
.sk-logo-text em{font-style:normal;color:var(--sk-primary);}
.sk-nav{display:flex;align-items:center;gap:var(--sp-1);margin:0 auto;overflow-x:auto;scrollbar-width:none;}
.sk-nav::-webkit-scrollbar{display:none;}
.sk-chip{
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid transparent;color:var(--sk-ink-2);
  font-size:14.5px;font-weight:600;white-space:nowrap;
  transition:all var(--dur) var(--ease);
}
.sk-chip:hover{color:var(--sk-ink);border-color:var(--sk-line-strong);}
.sk-chip.is-active{background:var(--sk-primary-soft);border-color:rgba(122,92,255,.6);color:#fff;}
.sk-nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.sk-burger{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--sk-line-strong);background:transparent;color:var(--sk-ink);
  align-items:center;justify-content:center;font-size:17px;cursor:pointer;
}
.sk-burger:hover{background:rgba(255,255,255,.06);}
.sk-drawer{
  position:fixed;inset:0;z-index:1050;background:var(--sk-void);
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform 320ms var(--ease),opacity 320ms var(--ease),visibility 320ms;
  padding:20px 20px 32px;overflow-y:auto;
}
.sk-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.sk-drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-6);}
.sk-drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--sk-line-strong);background:transparent;color:var(--sk-ink);font-size:18px;cursor:pointer;}
.sk-drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 4px;border-bottom:1px solid var(--sk-line);
  font-size:20px;font-weight:700;color:var(--sk-ink);
}
.sk-drawer-link.is-active{color:var(--sk-primary);}
.sk-drawer-link i{color:var(--sk-ink-3);font-size:15px;}
.sk-drawer-cta{margin-top:var(--sp-6);}

/* ===== 按钮 ===== */
.sk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:all var(--dur) var(--ease);
}
.sk-btn-primary{
  background:linear-gradient(100deg,var(--sk-primary),#5FB6FF 120%);
  color:#fff;box-shadow:0 12px 30px -14px rgba(122,92,255,.9);
}
.sk-btn-primary:hover{filter:brightness(1.06);box-shadow:0 16px 40px -14px rgba(122,92,255,1);color:#fff;}
.sk-btn-primary:active{transform:scale(.98);}
.sk-btn-ghost{background:transparent;border-color:var(--sk-line-strong);color:var(--sk-ink);}
.sk-btn-ghost:hover{background:rgba(122,92,255,.1);border-color:rgba(122,92,255,.6);color:#fff;}
.sk-btn-sm{height:42px;padding:0 20px;font-size:14px;}
.sk-btn-block{width:100%;}
.sk-textlink{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;
  color:var(--sk-accent);
}
.sk-textlink i{transition:transform var(--dur) var(--ease);}
.sk-textlink:hover{color:#5ff0c6;}
.sk-textlink:hover i{transform:translateX(4px);}

/* ===== Hero ===== */
.sk-hero{position:relative;overflow:hidden;background:var(--sk-deep);padding-bottom:var(--sp-6);}
.sk-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5;}
.sk-hero-mask{
  position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 22% 20%, rgba(122,92,255,.32), transparent 62%),
    linear-gradient(180deg, rgba(11,10,20,.86) 0%, rgba(11,10,20,.72) 45%, var(--sk-void) 100%);
}
.sk-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(1.5px 1.5px at 20% 30%, rgba(255,255,255,.55), transparent 60%),
                   radial-gradient(1.5px 1.5px at 70% 18%, rgba(255,255,255,.4), transparent 60%),
                   radial-gradient(1.5px 1.5px at 46% 62%, rgba(255,255,255,.32), transparent 60%),
                   radial-gradient(1.5px 1.5px at 86% 54%, rgba(255,255,255,.4), transparent 60%);
  background-size:520px 520px,640px 640px,760px 760px,580px 580px;
  animation:skDrift 20s linear infinite;
  opacity:.9;
}
@keyframes skDrift{
  from{background-position:0 0,0 0,0 0,0 0;}
  to{background-position:520px 520px,-640px 640px,760px -760px,-580px -580px;}
}
.sk-hero-inner{position:relative;z-index:2;display:flex;align-items:flex-end;gap:var(--sp-6);padding-top:clamp(72px,12vw,140px);min-height:520px;}
.sk-hero-copy{flex:1 1 auto;max-width:720px;}
.sk-hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(53,224,176,.12);border:1px solid rgba(53,224,176,.35);
  color:var(--sk-accent);font-size:13px;font-weight:600;margin-bottom:var(--sp-4);
}
.sk-hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--sk-accent);display:block;box-shadow:0 0 0 4px rgba(53,224,176,.18);}
.sk-hero h1{
  font-size:clamp(32px,5vw,58px);line-height:1.1;font-weight:800;letter-spacing:-.02em;
  margin-bottom:var(--sp-4);
}
.sk-hero h1 span{background:linear-gradient(96deg,var(--sk-ink),#9E8BFF 70%);-webkit-background-clip:text;background-clip:text;color:transparent;}
.sk-hero-sub{font-size:17px;line-height:1.85;color:var(--sk-ink-2);max-width:620px;margin-bottom:var(--sp-5);}
.sk-hero-actions{display:flex;flex-wrap:wrap;gap:var(--sp-2);}
.sk-hero-panel{
  flex:0 0 300px;background:rgba(27,23,56,.92);border:1px solid var(--sk-line-strong);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-float);
}
.sk-hero-panel h2{font-size:14px;font-weight:600;color:var(--sk-ink-2);margin-bottom:12px;}
.sk-hero-panel .sk-big{font-size:40px;font-weight:800;line-height:1;letter-spacing:-.02em;}
.sk-hero-panel .sk-big small{font-size:16px;color:var(--sk-ink-3);font-weight:600;margin-left:4px;}
.sk-hero-panel .sk-phase{margin-top:14px;font-size:13px;color:var(--sk-ink-3);}
.sk-track{height:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);overflow:hidden;margin-top:14px;}
.sk-track span{display:block;height:100%;width:0;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--sk-primary),var(--sk-accent));transition:width 800ms var(--ease);}
.sk-kpi-row{
  position:relative;z-index:2;
  display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-4);
  margin-top:var(--sp-6);padding-top:var(--sp-5);border-top:1px solid var(--sk-line);
}
.sk-kpi b{display:block;font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.02em;}
.sk-kpi b i{font-style:normal;font-size:15px;color:var(--sk-ink-3);font-weight:600;margin-left:4px;}
.sk-kpi span{display:block;font-size:13px;color:var(--sk-ink-3);margin-top:4px;}

/* ===== 板块通用 ===== */
.sk-section{padding:96px 0;}
.sk-section.alt{background:var(--sk-deep);}
.sk-sec-head{max-width:760px;margin-bottom:var(--sp-6);}
.sk-sec-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  color:var(--sk-primary);letter-spacing:.06em;margin-bottom:12px;
}
.sk-sec-tag::before{content:"";width:18px;height:3px;border-radius:2px;background:var(--sk-primary);}
.sk-sec-head h2{font-size:clamp(24px,3vw,38px);line-height:1.2;margin-bottom:14px;}
.sk-sec-head p{font-size:16px;color:var(--sk-ink-2);max-width:660px;}
.sk-sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--sp-4);flex-wrap:wrap;}

/* ===== 玩法流程 ===== */
.sk-flow{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-4);}
.sk-flow::before{
  content:"";position:absolute;top:19px;left:6%;right:6%;height:1px;
  background:linear-gradient(90deg,transparent,var(--sk-line-strong) 12%,var(--sk-line-strong) 88%,transparent);
}
.sk-flow-item{position:relative;padding-top:56px;}
.sk-flow-num{
  position:absolute;top:0;left:0;width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--sk-surface);border:1px solid var(--sk-line-strong);
  color:var(--sk-ink);font-size:14px;font-weight:800;
  box-shadow:0 0 0 6px var(--sk-void);
}
.sk-section.alt .sk-flow-num{box-shadow:0 0 0 6px var(--sk-deep);}
.sk-flow-item h3{font-size:19px;margin-bottom:10px;}
.sk-flow-item p{font-size:14.5px;color:var(--sk-ink-2);line-height:1.8;}

/* ===== 奖励卡 ===== */
.sk-card{
  background:var(--sk-surface);border:1px solid var(--sk-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;height:100%;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.sk-card:hover{transform:translateY(-4px);border-color:rgba(122,92,255,.4);box-shadow:var(--sh-hover);}
.sk-card.feature{border-color:rgba(122,92,255,.55);}
.sk-card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#2A2455,#150F32);}
.sk-card-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.sk-card:hover .sk-card-media img{transform:scale(1.03);}
.sk-badge{
  position:absolute;top:12px;left:12px;
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(242,169,59,.16);border:1px solid rgba(242,169,59,.5);
  color:var(--sk-warm);font-size:12px;font-weight:700;
}
.sk-badge.is-primary{background:var(--sk-primary-soft);border-color:rgba(122,92,255,.6);color:#C7BBFF;}
.sk-corner{
  position:absolute;top:0;right:0;
  background:linear-gradient(90deg,var(--sk-primary),#4E9BFF);
  color:#fff;font-size:12px;font-weight:700;
  padding:5px 14px;border-bottom-left-radius:12px;
}
.sk-card-body{padding:24px;}
.sk-card-body h3{font-size:19px;margin-bottom:12px;}
.sk-card-list li{
  position:relative;padding-left:20px;font-size:14.5px;color:var(--sk-ink-2);
  line-height:1.85;
}
.sk-card-list li::before{
  content:"";position:absolute;left:2px;top:12px;width:6px;height:6px;border-radius:50%;
  background:var(--sk-accent);box-shadow:0 0 0 3px rgba(53,224,176,.16);
}
.sk-card-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--sk-line);}

/* ===== 任务进度 ===== */
.sk-progress-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:var(--sp-6);align-items:start;}
.sk-milestone{
  display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--sk-line);
  align-items:flex-start;
}
.sk-milestone:last-child{border-bottom:0;}
.sk-dot{width:12px;height:12px;border-radius:50%;margin-top:9px;flex:0 0 auto;background:var(--sk-ink-3);}
.sk-dot.done{background:var(--sk-accent);box-shadow:0 0 0 6px rgba(53,224,176,.14);}
.sk-dot.now{background:var(--sk-primary);box-shadow:0 0 0 6px rgba(122,92,255,.2);}
.sk-milestone-body{flex:1 1 auto;}
.sk-milestone-body h3{font-size:17px;margin-bottom:6px;}
.sk-milestone-body p{font-size:14px;color:var(--sk-ink-2);}
.sk-state{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;flex:0 0 auto;
}
.sk-state.done{background:rgba(53,224,176,.12);border:1px solid rgba(53,224,176,.4);color:var(--sk-accent);}
.sk-state.now{background:var(--sk-primary-soft);border:1px solid rgba(122,92,255,.55);color:#C7BBFF;}
.sk-state.lock{background:rgba(124,118,145,.12);border:1px solid rgba(124,118,145,.4);color:var(--sk-ink-3);}
.sk-sticky{position:sticky;top:96px;background:var(--sk-surface);border:1px solid var(--sk-line-strong);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-card);}
.sk-sticky .sk-percent{font-size:clamp(40px,6vw,56px);font-weight:800;line-height:1;letter-spacing:-.03em;}
.sk-sticky .sk-percent small{font-size:18px;color:var(--sk-ink-3);}
.sk-sticky .sk-track{margin-top:20px;}
.sk-sticky-meta{display:flex;justify-content:space-between;font-size:13px;color:var(--sk-ink-3);margin-top:12px;}
.sk-sticky-divider{height:1px;background:var(--sk-line);margin:22px 0;}

/* ===== CMS 列表卡 ===== */
.sk-post{
  display:flex;flex-direction:column;background:var(--sk-surface);
  border:1px solid var(--sk-line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);height:100%;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.sk-post:hover{transform:translateY(-4px);border-color:rgba(122,92,255,.4);box-shadow:var(--sh-hover);color:inherit;}
.sk-post-cover{position:relative;overflow:hidden;background:linear-gradient(135deg,#2A2455,#150F32);}
.sk-post-cover img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.sk-post:hover .sk-post-cover img{transform:scale(1.03);}
.sk-post-main .sk-post-cover{aspect-ratio:16/9;}
.sk-post-side .sk-post-cover{aspect-ratio:16/9;}
.sk-post-cat{
  position:absolute;top:12px;left:12px;height:26px;padding:0 12px;
  display:inline-flex;align-items:center;border-radius:var(--r-pill);
  background:rgba(11,10,20,.7);border:1px solid var(--sk-line-strong);
  color:#fff;font-size:12px;font-weight:600;backdrop-filter:blur(6px);
}
.sk-post-body{padding:22px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.sk-post-body h3{
  font-size:19px;line-height:1.45;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.sk-post-main .sk-post-body h3{font-size:22px;}
.sk-post-body p{
  font-size:14px;color:var(--sk-ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.sk-post-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--sk-ink-3);
}
.sk-post-foot .sk-arrow{color:var(--sk-ink-3);transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);}
.sk-post:hover .sk-post-foot .sk-arrow{transform:translateX(4px);color:var(--sk-accent);}
.sk-side-list{display:grid;gap:var(--sp-4);}
.sk-empty{
  border:1px dashed var(--sk-line-strong);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;background:var(--sk-surface);
}
.sk-empty i{font-size:26px;color:var(--sk-primary);margin-bottom:14px;display:block;}
.sk-empty p{color:var(--sk-ink-2);margin-bottom:20px;}

/* ===== FAQ ===== */
.sk-faq{display:grid;gap:12px;max-width:900px;}
.sk-faq-item{background:var(--sk-surface);border:1px solid var(--sk-line);border-radius:16px;overflow:hidden;transition:border-color var(--dur) var(--ease);}
.sk-faq-item.is-open{border-color:rgba(122,92,255,.45);}
.sk-faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:0;color:var(--sk-ink);
  font-size:16.5px;font-weight:600;text-align:left;cursor:pointer;
}
.sk-faq-item.is-open .sk-faq-q{color:#C7BBFF;}
.sk-plus{position:relative;width:18px;height:18px;flex:0 0 auto;}
.sk-plus::before,.sk-plus::after{content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform var(--dur) var(--ease);}
.sk-plus::before{left:0;top:8px;width:18px;height:2px;}
.sk-plus::after{left:8px;top:0;width:2px;height:18px;}
.sk-faq-item.is-open .sk-plus::after{transform:rotate(90deg);}
.sk-faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease);}
.sk-faq-a p{padding:0 24px 22px;font-size:15px;color:var(--sk-ink-2);line-height:1.85;}

/* ===== CTA 面板 ===== */
.sk-cta{
  position:relative;overflow:hidden;border-radius:26px;
  background:var(--sk-deep);border:1px solid var(--sk-line-strong);
  padding:clamp(32px,6vw,64px);box-shadow:var(--sh-float);
}
.sk-cta::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(80% 120% at 84% 12%, rgba(122,92,255,.28), transparent 60%),
    radial-gradient(60% 90% at 12% 88%, rgba(53,224,176,.14), transparent 60%);
}
.sk-cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr .8fr;gap:var(--sp-6);align-items:center;}
.sk-cta h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.sk-cta p{color:var(--sk-ink-2);margin-bottom:24px;max-width:560px;}
.sk-cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.sk-assure{display:grid;gap:16px;}
.sk-assure li{display:flex;gap:14px;align-items:flex-start;font-size:14.5px;color:var(--sk-ink-2);}
.sk-assure i{
  flex:0 0 auto;width:36px;height:36px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--sk-primary-soft);border:1px solid rgba(122,92,255,.4);color:#C7BBFF;font-size:14px;
}
.sk-assure b{color:var(--sk-ink);display:block;font-size:15px;}

/* ===== 页脚 ===== */
.sk-footer{
  position:relative;background:var(--sk-void);border-top:1px solid var(--sk-line);
  padding:64px 0 28px;margin-top:0;
}
.sk-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(1.5px 1.5px at 24% 24%, rgba(255,255,255,.35), transparent 60%),
                   radial-gradient(1.5px 1.5px at 68% 62%, rgba(255,255,255,.28), transparent 60%);
  background-size:460px 460px,560px 560px;
}
.sk-footer-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:var(--sp-5);}
.sk-footer h3{font-size:15px;margin-bottom:16px;color:var(--sk-ink);}
.sk-footer-links li{margin-bottom:10px;}
.sk-footer-links a{font-size:14px;color:var(--sk-ink-2);}
.sk-footer-links a:hover{color:var(--sk-primary);}
.sk-footer-desc{font-size:14px;color:var(--sk-ink-3);line-height:1.85;margin-top:16px;max-width:320px;}
.sk-footer-bottom{
  position:relative;z-index:2;margin-top:48px;padding-top:24px;border-top:1px solid var(--sk-line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--sk-ink-3);
}
.sk-top-btn{
  display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--sk-line-strong);color:var(--sk-ink-2);font-size:12.5px;background:transparent;cursor:pointer;
  transition:all var(--dur) var(--ease);
}
.sk-top-btn:hover{border-color:rgba(122,92,255,.6);color:#fff;}

/* ===== 移动端底部条 ===== */
.sk-mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:1020;height:56px;
  background:rgba(20,17,43,.96);border-top:1px solid var(--sk-line-strong);
  backdrop-filter:blur(10px);display:none;align-items:center;justify-content:space-between;
  padding:0 16px;transform:translateY(100%);transition:transform 280ms var(--ease);
}
.sk-mobile-cta.is-show{transform:translateY(0);}
.sk-mobile-cta span{font-size:13px;color:var(--sk-ink-2);}

/* ===== 动效 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .sk-progress-grid{grid-template-columns:1fr;}
  .sk-sticky{position:static;}
  .sk-flow{grid-template-columns:repeat(2,1fr);gap:32px 24px;}
  .sk-flow::before{display:none;}
}
@media (max-width:991px){
  .sk-nav{display:none;}
  .sk-nav-cta .sk-btn{display:none;}
  .sk-burger{display:inline-flex;}
  .sk-hero-inner{flex-direction:column;align-items:flex-start;padding-top:88px;min-height:auto;}
  .sk-hero-panel{flex:1 1 auto;width:100%;max-width:100%;}
  .sk-section{padding:72px 0;}
  .sk-cta-inner{grid-template-columns:1fr;}
  .sk-footer-grid{grid-template-columns:1fr 1fr;}
  .sk-kpi-row{grid-template-columns:1fr 1fr;gap:24px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .sk-section{padding:56px 0;}
  .sk-flow{grid-template-columns:1fr;}
  .sk-flow-item{padding-top:0;padding-left:56px;}
  .sk-flow-num{top:0;}
  .sk-hero h1{font-size:30px;}
  .sk-hero-sub{font-size:15.5px;}
  .sk-card-body,.sk-post-body{padding:20px;}
  .sk-mobile-cta{display:flex;}
  .sk-faq-q{padding:18px;font-size:15.5px;}
  .sk-faq-a p{padding:0 18px 18px;}
  .sk-hero-actions .sk-btn{flex:1 1 100%;}
}
@media (max-width:519px){
  .sk-footer-grid{grid-template-columns:1fr;}
  .sk-kpi-row{grid-template-columns:1fr 1fr;}
  .sk-hero-panel{padding:18px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --sk-void:#0B0A14;
  --sk-deep:#14112B;
  --sk-surface:#1B1738;
  --sk-line:rgba(255,255,255,.08);
  --sk-line-strong:rgba(255,255,255,.16);
  --sk-ink:#F5F3EF;
  --sk-ink-2:#B7B1CB;
  --sk-ink-3:#7C7691;
  --sk-primary:#7A5CFF;
  --sk-primary-soft:rgba(122,92,255,.12);
  --sk-accent:#35E0B0;
  --sk-warm:#F2A93B;
  --r-card:20px;
  --r-media:14px;
  --r-input:12px;
  --r-pill:999px;
  --sh-card:0 1px 0 rgba(255,255,255,.06),0 20px 40px -24px rgba(0,0,0,.8);
  --sh-hover:0 24px 60px -28px rgba(122,92,255,.55);
  --sh-pop:0 30px 80px -30px rgba(0,0,0,.9);
  --sp-1:8px;--sp-2:12px;--sp-3:16px;--sp-4:24px;--sp-5:32px;--sp-6:48px;--sp-7:64px;
  --sec-pad:96px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--sk-void);
  color:var(--sk-ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",Inter,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
a:hover{color:var(--sk-ink)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
time,.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--sk-primary);outline-offset:2px}
::selection{background:rgba(122,92,255,.35);color:#fff}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.sk-header{position:sticky;top:0;z-index:1050;border-bottom:1px solid transparent;transition:background .26s var(--ease),border-color .26s var(--ease),backdrop-filter .26s var(--ease)}
.sk-header.is-scrolled{background:rgba(11,10,20,.86);backdrop-filter:blur(12px);border-bottom-color:var(--sk-line)}
.sk-nav-wrap{display:flex;align-items:center;gap:24px;height:72px}
.sk-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.sk-logo-mark{width:34px;height:34px;flex:0 0 auto}
.sk-logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--sk-ink)}
.sk-logo-text em{font-style:normal;color:var(--sk-primary)}
.sk-nav{display:flex;align-items:center;gap:8px;margin:0 auto}
.sk-chip{display:inline-flex;align-items:center;padding:8px 16px;border-radius:var(--r-pill);border:1px solid transparent;font-size:14px;color:var(--sk-ink-2);white-space:nowrap;transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease)}
.sk-chip:hover{color:#fff;border-color:var(--sk-line-strong);background:rgba(255,255,255,.04)}
.sk-chip.is-active{background:var(--sk-primary-soft);border-color:rgba(122,92,255,.5);color:#fff}
.sk-nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;position:relative;z-index:2}
.sk-burger{display:none;width:44px;height:44px;border-radius:var(--r-pill);border:1px solid var(--sk-line-strong);color:var(--sk-ink);align-items:center;justify-content:center;transition:border-color .2s var(--ease),background .2s var(--ease)}
.sk-burger:hover{border-color:rgba(122,92,255,.6);background:var(--sk-primary-soft)}

/* ---------- buttons ---------- */
.sk-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-pill);font-size:15px;font-weight:700;letter-spacing:.01em;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease)}
.sk-btn-sm{height:42px;padding:0 20px;font-size:14px}
.sk-btn-primary{background:linear-gradient(120deg,#7A5CFF 0%,#35E0B0 130%);color:#0B0A14;box-shadow:0 14px 34px -18px rgba(122,92,255,.9)}
.sk-btn-primary:hover{filter:brightness(1.06);color:#0B0A14;box-shadow:0 18px 44px -18px rgba(122,92,255,.95)}
.sk-btn-ghost{background:transparent;border:1px solid var(--sk-line-strong);color:var(--sk-ink)}
.sk-btn-ghost:hover{border-color:rgba(122,92,255,.6);background:var(--sk-primary-soft);color:#fff}
.sk-btn:active{transform:scale(.98)}
.sk-text-btn{display:inline-flex;align-items:center;gap:6px;color:var(--sk-accent);font-size:14px;font-weight:600;transition:gap .2s var(--ease),color .2s var(--ease)}
.sk-text-btn:hover{gap:10px;color:#fff}

/* ---------- breadcrumb ---------- */
.sk-crumb-bar{border-bottom:1px solid var(--sk-line);background:linear-gradient(180deg,rgba(20,17,43,.75),rgba(11,10,20,0))}
.sk-crumb{padding:18px 0}
.sk-crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--sk-ink-3)}
.sk-crumb li{display:inline-flex;align-items:center;gap:8px}
.sk-crumb li+li::before{content:"/";color:rgba(255,255,255,.2)}
.sk-crumb a{color:var(--sk-ink-2);transition:color .2s var(--ease)}
.sk-crumb a:hover{color:var(--sk-accent)}
.sk-crumb [aria-current="page"]{color:var(--sk-ink-3);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article layout ---------- */
.sk-post{padding:44px 0 var(--sec-pad)}
.sk-post-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:48px;align-items:start}
.sk-post-main{min-width:0}
.sk-post-head{max-width:740px}
.sk-post-title{font-size:clamp(28px,4vw,44px);line-height:1.2;font-weight:800;letter-spacing:-.02em;color:var(--sk-ink)}
.sk-post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px;font-size:13px;color:var(--sk-ink-3)}
.sk-badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;border:1px solid transparent}
.sk-badge-primary{background:var(--sk-primary-soft);border-color:rgba(122,92,255,.45);color:#CFC5FF}
.sk-badge-warm{background:rgba(242,169,59,.12);border-color:rgba(242,169,59,.4);color:#F2A93B}
.sk-badge-accent{background:rgba(53,224,176,.12);border-color:rgba(53,224,176,.4);color:var(--sk-accent)}
.sk-meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22)}
.sk-post-rule{height:1px;background:var(--sk-line);margin:32px 0 36px;max-width:740px}

.sk-post-body{max-width:740px;font-size:17px;line-height:1.9;color:var(--sk-ink-2)}
.sk-post-body p{margin:0 0 1.2em}
.sk-post-body strong{color:var(--sk-ink);font-weight:700}
.sk-post-body a{color:var(--sk-accent);border-bottom:1px solid rgba(53,224,176,.35)}
.sk-post-body a:hover{color:#fff;border-bottom-color:#fff}
.sk-post-body h2{position:relative;margin:2em 0 .8em;padding-left:16px;font-size:clamp(21px,2.4vw,27px);line-height:1.35;font-weight:700;color:var(--sk-ink)}
.sk-post-body h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:linear-gradient(180deg,var(--sk-primary),var(--sk-accent))}
.sk-post-body h3{margin:1.7em 0 .6em;font-size:19px;font-weight:700;color:var(--sk-ink)}
.sk-post-body h4{margin:1.4em 0 .5em;font-size:17px;font-weight:700;color:var(--sk-ink)}
.sk-post-body ul,.sk-post-body ol{margin:0 0 1.3em}
.sk-post-body ul li,.sk-post-body ol li{position:relative;padding-left:22px;margin:.5em 0}
.sk-post-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--sk-accent);box-shadow:0 0 0 3px rgba(53,224,176,.14)}
.sk-post-body ol{counter-reset:skli}
.sk-post-body ol li{counter-increment:skli}
.sk-post-body ol li::before{content:counter(skli);position:absolute;left:0;top:.25em;width:18px;height:18px;border-radius:50%;background:var(--sk-primary-soft);border:1px solid rgba(122,92,255,.45);color:#CFC5FF;font-size:11px;font-weight:700;line-height:16px;text-align:center}
.sk-post-body blockquote{margin:1.6em 0;padding:18px 22px;background:var(--sk-deep);border-left:4px solid var(--sk-primary);border-radius:0 var(--r-media) var(--r-media) 0;color:var(--sk-ink);font-size:16px}
.sk-post-body img{margin:1.5em auto;border-radius:var(--r-media);border:1px solid var(--sk-line)}
.sk-post-body figure{margin:1.6em 0}
.sk-post-body figcaption{margin-top:10px;font-size:13px;color:var(--sk-ink-3);text-align:center}
.sk-post-body hr{border:0;height:1px;background:var(--sk-line);margin:2.2em 0}
.sk-post-body code{background:var(--sk-deep);border:1px solid var(--sk-line);border-radius:8px;padding:2px 7px;font-size:14px;color:#CFC5FF}
.sk-post-body pre{background:var(--sk-deep);border:1px solid var(--sk-line);border-radius:var(--r-media);padding:18px;overflow-x:auto}
.sk-post-body pre code{border:0;background:none;padding:0;color:var(--sk-ink-2)}
.sk-table-scroll{overflow-x:auto;margin:1.6em 0;border:1px solid var(--sk-line);border-radius:var(--r-media)}
.sk-post-body table{width:100%;min-width:520px;border-collapse:collapse;font-size:15px}
.sk-post-body th,.sk-post-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--sk-line)}
.sk-post-body th{background:var(--sk-deep);color:var(--sk-ink);font-weight:700}
.sk-post-body tr:last-child td{border-bottom:0}

.sk-empty{padding:48px 28px;text-align:center;background:var(--sk-surface);border:1px solid var(--sk-line);border-radius:var(--r-card);max-width:740px}
.sk-empty i{font-size:26px;color:var(--sk-ink-3)}
.sk-empty h2{margin:16px 0 8px;font-size:20px;color:var(--sk-ink)}
.sk-empty p{margin:0 0 22px;color:var(--sk-ink-2);font-size:15px}

/* ---------- tags & actions ---------- */
.sk-post-tags{display:flex;flex-wrap:wrap;gap:10px;max-width:740px;margin-top:44px;padding-top:28px;border-top:1px solid var(--sk-line)}
.sk-tag{display:inline-flex;align-items:center;gap:6px;padding:7px 15px;border-radius:var(--r-pill);background:var(--sk-surface);border:1px solid var(--sk-line);font-size:13px;color:var(--sk-ink-2);transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease)}
.sk-tag:hover{border-color:rgba(122,92,255,.55);color:#fff;transform:translateY(-2px)}
.sk-post-actions{display:flex;flex-wrap:wrap;gap:12px;max-width:740px;margin-top:24px}

/* ---------- pager ---------- */
.sk-pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:56px;max-width:740px}
.sk-pager-card{display:block;padding:24px;background:var(--sk-surface);border:1px solid var(--sk-line);border-radius:var(--r-card);box-shadow:var(--sh-card);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.sk-pager-card:hover{transform:translateY(-4px);border-color:rgba(122,92,255,.4);box-shadow:var(--sh-hover)}
.sk-pager-card small{display:block;font-size:12px;letter-spacing:.06em;color:var(--sk-ink-3);margin-bottom:10px}
.sk-pager-card h3{font-size:17px;font-weight:700;color:var(--sk-ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sk-pager-card span.sk-pager-go{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13px;color:var(--sk-accent)}

/* ---------- aside ---------- */
.sk-post-aside{display:grid;gap:20px;position:sticky;top:96px}
.sk-side-card{background:var(--sk-surface);border:1px solid var(--sk-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-card)}
.sk-side-title{font-size:15px;font-weight:700;color:var(--sk-ink);letter-spacing:.02em;margin-bottom:16px}
.sk-side-chips{display:flex;flex-wrap:wrap;gap:8px}
.sk-toc{display:grid;gap:8px;max-height:320px;overflow-y:auto;padding-right:6px}
.sk-toc a{display:block;font-size:14px;color:var(--sk-ink-2);line-height:1.6;padding:4px 0 4px 12px;border-left:2px solid var(--sk-line);transition:color .2s var(--ease),border-color .2s var(--ease)}
.sk-toc a:hover{color:#fff;border-left-color:var(--sk-primary)}
.sk-toc a.is-h3{padding-left:24px;font-size:13px;color:var(--sk-ink-3)}
.sk-mini-list{display:grid;gap:14px}
.sk-mini-list li+li{padding-top:14px;border-top:1px solid var(--sk-line)}
.sk-mini-list a{display:block;font-size:14px;color:var(--sk-ink-2);line-height:1.6;transition:color .2s var(--ease)}
.sk-mini-list a:hover{color:#fff}
.sk-mini-time{display:block;margin-top:6px;font-size:12px;color:var(--sk-ink-3)}
.sk-side-cta{background:linear-gradient(150deg,rgba(122,92,255,.22),rgba(53,224,176,.12)),var(--sk-deep);border:1px solid rgba(122,92,255,.35);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-card)}
.sk-side-cta p{font-size:14px;color:var(--sk-ink-2);margin-bottom:18px}

/* ---------- sections ---------- */
.sk-sec{padding:var(--sec-pad) 0}
.sk-sec-alt{background:var(--sk-deep);border-top:1px solid var(--sk-line);border-bottom:1px solid var(--sk-line)}
.sk-sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px}
.sk-sec-head h2{font-size:clamp(22px,3vw,34px);font-weight:700;letter-spacing:-.01em;line-height:1.25}
.sk-sec-head p{margin-top:12px;font-size:15px;color:var(--sk-ink-2);max-width:640px}
.sk-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--sk-accent);text-transform:uppercase;margin-bottom:14px}
.sk-eyebrow::before{content:"";width:22px;height:1px;background:var(--sk-accent);opacity:.7}

/* ---------- cards ---------- */
.sk-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.sk-card{display:flex;flex-direction:column;background:var(--sk-surface);border:1px solid var(--sk-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.sk-card:hover{transform:translateY(-4px);border-color:rgba(122,92,255,.4);box-shadow:var(--sh-hover)}
.sk-card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,#221C4A,#0F0D22)}
.sk-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.sk-card:hover .sk-card-media img{transform:scale(1.03)}
.sk-card-media .sk-badge{position:absolute;left:12px;top:12px;background:rgba(11,10,20,.72);color:#fff;border-color:rgba(255,255,255,.16)}
.sk-card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.sk-card-body h3{font-size:18px;font-weight:700;line-height:1.5;color:var(--sk-ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sk-card-body p{font-size:14px;line-height:1.75;color:var(--sk-ink-2);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;margin-top:auto;font-size:13px;color:var(--sk-ink-3)}
.sk-card-foot i{color:var(--sk-accent)}

/* ---------- faq ---------- */
.sk-faq{display:grid;gap:12px;max-width:900px}
.sk-faq-item{background:var(--sk-surface);border:1px solid var(--sk-line);border-radius:var(--r-card);overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease)}
.sk-faq-item.is-open{border-color:rgba(122,92,255,.45);box-shadow:var(--sh-card)}
.sk-faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--sk-ink);transition:color .2s var(--ease)}
.sk-faq-item.is-open .sk-faq-q{color:#CFC5FF}
.sk-faq-icon{position:relative;flex:0 0 auto;width:20px;height:20px;transition:transform .26s var(--ease)}
.sk-faq-icon::before,.sk-faq-icon::after{content:"";position:absolute;background:var(--sk-ink-2);border-radius:2px;transition:background .2s var(--ease)}
.sk-faq-icon::before{left:0;top:9px;width:20px;height:2px}
.sk-faq-icon::after{left:9px;top:0;width:2px;height:20px}
.sk-faq-item.is-open .sk-faq-icon{transform:rotate(45deg)}
.sk-faq-item.is-open .sk-faq-icon::before,.sk-faq-item.is-open .sk-faq-icon::after{background:var(--sk-primary)}
.sk-faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.sk-faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--sk-ink-2)}

/* ---------- cta ---------- */
.sk-cta{position:relative;overflow:hidden;background:linear-gradient(135deg,#191538 0%,#0D0B1C 100%);border:1px solid var(--sk-line);border-radius:var(--r-card);padding:56px;box-shadow:var(--sh-card)}
.sk-cta::after{content:"";position:absolute;inset:0;background-image:radial-gradient(1.4px 1.4px at 12% 22%,rgba(255,255,255,.55),transparent),radial-gradient(1.2px 1.2px at 68% 14%,rgba(53,224,176,.55),transparent),radial-gradient(1.6px 1.6px at 84% 62%,rgba(242,169,59,.5),transparent),radial-gradient(1.2px 1.2px at 32% 84%,rgba(122,92,255,.6),transparent);opacity:.75;animation:skDrift 20s linear infinite;pointer-events:none}
@keyframes skDrift{0%{transform:translate3d(0,0,0)}50%{transform:translate3d(-14px,-10px,0)}100%{transform:translate3d(0,0,0)}}
.sk-cta-inner{position:relative;z-index:2;max-width:760px}
.sk-cta h2{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.25;margin-bottom:16px}
.sk-cta p{color:var(--sk-ink-2);font-size:16px;margin-bottom:30px}
.sk-cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.sk-cta-points{display:flex;flex-wrap:wrap;gap:24px}
.sk-cta-points span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--sk-ink-2)}
.sk-cta-points i{color:var(--sk-accent)}

/* ---------- footer ---------- */
.sk-footer{position:relative;background:var(--sk-void);border-top:1px solid var(--sk-line);padding:72px 0 28px;overflow:hidden}
.sk-footer::before{content:"";position:absolute;inset:0;background-image:radial-gradient(1.2px 1.2px at 18% 30%,rgba(255,255,255,.35),transparent),radial-gradient(1.4px 1.4px at 62% 18%,rgba(122,92,255,.45),transparent),radial-gradient(1.2px 1.2px at 84% 72%,rgba(53,224,176,.4),transparent);opacity:.6;pointer-events:none}
.sk-footer .container{position:relative;z-index:1}
.sk-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.sk-footer-grid h3{font-size:14px;font-weight:700;letter-spacing:.04em;color:var(--sk-ink);margin-bottom:16px}
.sk-footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:var(--sk-ink-3);max-width:340px}
.sk-footer-links{display:grid;gap:10px}
.sk-footer-links a{font-size:14px;color:var(--sk-ink-2);transition:color .2s var(--ease)}
.sk-footer-links a:hover{color:var(--sk-accent)}
.sk-footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:56px;padding-top:22px;border-top:1px solid var(--sk-line);font-size:12px;color:var(--sk-ink-3)}
.sk-top-btn{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 18px;border-radius:var(--r-pill);border:1px solid var(--sk-line-strong);font-size:13px;color:var(--sk-ink-2);transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease)}
.sk-top-btn:hover{color:#fff;border-color:rgba(122,92,255,.6);background:var(--sk-primary-soft)}

/* ---------- reveal ---------- */
.sk-reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.sk-reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--sec-pad:72px}
  .sk-post-layout{grid-template-columns:minmax(0,1fr)}
  .sk-post-aside{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
  .sk-side-cta{grid-column:1/-1}
}
@media (max-width:991px){
  .sk-nav{position:fixed;inset:0;flex-direction:column;align-items:stretch;gap:12px;margin:0;padding:96px 24px 32px;background:#0B0A14;transform:translateX(100%);transition:transform .28s var(--ease);z-index:1;overflow-y:auto}
  .sk-nav.is-open{transform:translateX(0)}
  .sk-nav .sk-chip{width:100%;justify-content:flex-start;font-size:17px;font-weight:600;padding:15px 18px;border-radius:var(--r-input);border-color:var(--sk-line)}
  .sk-burger{display:inline-flex}
  .sk-grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sk-cta{padding:40px 32px}
  .sk-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  :root{--sec-pad:56px}
  .container{padding:0 16px}
  .sk-nav-wrap{height:64px;gap:12px}
  body{font-size:15px}
  .sk-post{padding:32px 0 56px}
  .sk-post-body{font-size:16px;line-height:1.85}
  .sk-post-aside{grid-template-columns:minmax(0,1fr)}
  .sk-pager{grid-template-columns:minmax(0,1fr);margin-top:40px}
  .sk-grid-3{grid-template-columns:minmax(0,1fr)}
  .sk-footer-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .sk-footer{padding:56px 0 24px}
  .sk-faq-q{font-size:15px;padding:18px 18px}
  .sk-faq-a p{padding:0 18px 18px}
  .sk-crumb [aria-current="page"]{max-width:220px}
}
@media (max-width:520px){
  .sk-btn{height:44px;padding:0 20px;width:100%}
  .sk-btn-sm{width:auto}
  .sk-nav-cta .sk-btn-sm{display:none}
  .sk-cta{padding:32px 22px}
  .sk-cta-actions .sk-btn{width:100%}
  .sk-post-actions .sk-btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .sk-reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --sk-void:#0B0A14;
  --sk-deep:#14112B;
  --sk-surface:#1B1738;
  --sk-line:rgba(255,255,255,.08);
  --sk-line-strong:rgba(255,255,255,.16);
  --sk-ink:#F5F3EF;
  --sk-ink-2:#B7B1CB;
  --sk-ink-3:#7C7691;
  --sk-primary:#7A5CFF;
  --sk-accent:#35E0B0;
  --sk-warm:#F2A93B;
  --r-card:20px;
  --r-img:14px;
  --r-input:12px;
  --r-pill:999px;
  --sh-card:0 1px 0 rgba(255,255,255,.06),0 20px 40px -24px rgba(0,0,0,.8);
  --sh-hover:0 24px 60px -28px rgba(122,92,255,.55);
  --sh-float:0 30px 80px -30px rgba(0,0,0,.9);
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px; --sp-7:64px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --t:.24s var(--ease);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--sk-void);color:var(--sk-ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.sk-noscroll{overflow:hidden}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t)}
a:hover{color:var(--sk-ink)}
img{max-width:100%;display:block;border:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit}
time,.sk-num{font-variant-numeric:tabular-nums}
::selection{background:rgba(122,92,255,.4)}
:focus-visible{outline:2px solid var(--sk-primary);outline-offset:2px;border-radius:6px}
.sk-skip{position:absolute;left:-9999px;top:0;background:var(--sk-primary);color:#0B0A14;padding:10px 16px;border-radius:0 0 12px 0;z-index:2000}
.sk-skip:focus{left:0}

/* 容器 */
.container{width:100%;max-width:1280px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:576px){.container{max-width:1280px}}
@media (min-width:768px){.container{max-width:1280px}}
@media (min-width:992px){.container{max-width:1280px}}
@media (min-width:1200px){.container{max-width:1280px}}
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:767px){.container{padding-left:16px;padding-right:16px}}

/* 按钮 */
.sk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.01em;white-space:nowrap;
  transition:transform var(--t),box-shadow var(--t),background-color var(--t),border-color var(--t),filter var(--t);
}
.sk-btn i{font-size:13px;transition:transform var(--t)}
.sk-btn-primary{
  color:#0B0A14;background:linear-gradient(115deg,#7A5CFF 0%,#35E0B0 100%);
  box-shadow:0 14px 32px -18px rgba(122,92,255,.9);
}
.sk-btn-primary:hover{filter:brightness(1.06);box-shadow:0 18px 42px -18px rgba(122,92,255,1);color:#0B0A14}
.sk-btn-primary:active{transform:scale(.98)}
.sk-btn-ghost{
  color:var(--sk-ink);background:transparent;border:1px solid var(--sk-line-strong);
}
.sk-btn-ghost:hover{background:rgba(122,92,255,.12);border-color:rgba(122,92,255,.55);color:var(--sk-ink)}
.sk-btn-ghost:active{transform:scale(.98)}
.sk-btn-sm{height:40px;padding:0 18px;font-size:14px}
.sk-btn-block{width:100%}
.sk-text-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--sk-accent);
  transition:gap var(--t),color var(--t);
}
.sk-text-link i{font-size:12px;transition:transform var(--t)}
.sk-text-link:hover{color:#5BF0C5}
.sk-text-link:hover i{transform:translateX(4px)}

/* 标签与徽章 */
.sk-chip{
  display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid transparent;color:var(--sk-ink-2);font-size:14px;font-weight:600;white-space:nowrap;
  transition:color var(--t),background-color var(--t),border-color var(--t);
}
.sk-chip:hover{color:var(--sk-ink);border-color:var(--sk-line-strong);background:rgba(255,255,255,.04)}
.sk-chip.is-active{color:#fff;background:rgba(122,92,255,.12);border-color:rgba(122,92,255,.5)}
.sk-chip-sm{height:32px;padding:0 14px;font-size:13px}
.sk-filter-chip{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--sk-line);color:var(--sk-ink-2);font-size:13px;font-weight:600;white-space:nowrap;
  transition:all var(--t);
}
.sk-filter-chip:hover{border-color:var(--sk-line-strong);color:var(--sk-ink)}
.sk-filter-chip.is-on{border-color:var(--sk-primary);color:#fff;background:rgba(122,92,255,.08)}
.sk-cat-tag{
  position:absolute;left:12px;top:12px;z-index:2;
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(11,10,20,.72);backdrop-filter:blur(6px);color:#fff;font-size:12px;font-weight:600;
}
.sk-badge{
  display:inline-flex;align-items:center;gap:5px;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;
}
.sk-badge-warm{background:rgba(242,169,59,.14);color:var(--sk-warm);border:1px solid rgba(242,169,59,.35)}
.sk-badge-accent{background:rgba(53,224,176,.12);color:var(--sk-accent);border:1px solid rgba(53,224,176,.3)}
.sk-tag-row{display:flex;flex-wrap:wrap;gap:8px}
.sk-tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.04);border:1px solid var(--sk-line);color:var(--sk-ink-3);font-size:12px;font-weight:600;
  transition:color var(--t),border-color var(--t);
}
.sk-tag:hover{color:var(--sk-ink-2);border-color:var(--sk-line-strong)}

/* 头部导航 */
.sk-header{
  position:sticky;top:0;z-index:1040;background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color var(--t),border-color var(--t);
}
.sk-header.is-scrolled{
  background:rgba(11,10,20,.86);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom-color:var(--sk-line);
}
.sk-nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px}
.sk-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.sk-logo-mark{width:34px;height:34px;flex:0 0 auto}
.sk-logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--sk-ink)}
.sk-logo-text em{font-style:normal;color:var(--sk-primary)}
.sk-nav{display:flex;align-items:center;gap:8px}
.sk-nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.sk-burger{
  display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--sk-line-strong);
  color:var(--sk-ink);align-items:center;justify-content:center;font-size:17px;
}
.sk-burger:hover{border-color:rgba(122,92,255,.55);background:rgba(122,92,255,.1)}
.sk-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(360px,86vw);z-index:1060;
  background:#14112B;border-left:1px solid var(--sk-line);padding:24px;
  display:flex;flex-direction:column;gap:24px;
  transform:translateX(102%);transition:transform .28s var(--ease);
}
.sk-drawer.is-open{transform:translateX(0)}
.sk-drawer-head{display:flex;align-items:center;justify-content:space-between}
.sk-drawer-title{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--sk-ink-3);text-transform:uppercase}
.sk-drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--sk-line);color:var(--sk-ink-2);display:inline-flex;align-items:center;justify-content:center}
.sk-drawer-close:hover{color:#fff;border-color:var(--sk-line-strong)}
.sk-drawer-nav{display:flex;flex-direction:column;gap:6px}
.sk-drawer-nav a{
  padding:14px 16px;border-radius:14px;font-size:17px;font-weight:700;color:var(--sk-ink-2);
  border:1px solid transparent;
}
.sk-drawer-nav a:hover{background:rgba(255,255,255,.04);color:#fff}
.sk-drawer-nav a.is-active{background:rgba(122,92,255,.14);border-color:rgba(122,92,255,.45);color:#fff}
.sk-drawer-mask{
  position:fixed;inset:0;z-index:1050;background:rgba(6,5,12,.72);
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease);
}
.sk-drawer-mask.is-open{opacity:1;pointer-events:auto}

/* 星点纹理 */
.sk-starfield{position:relative}
.sk-starfield::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.65;
  background-image:
    radial-gradient(1.6px 1.6px at 12% 24%,rgba(255,255,255,.5),transparent),
    radial-gradient(1.4px 1.4px at 68% 12%,rgba(255,255,255,.38),transparent),
    radial-gradient(1.6px 1.6px at 34% 78%,rgba(255,255,255,.32),transparent),
    radial-gradient(1.4px 1.4px at 88% 62%,rgba(255,255,255,.42),transparent),
    radial-gradient(1.2px 1.2px at 52% 46%,rgba(255,255,255,.28),transparent);
  background-size:460px 460px;
  animation:skDrift 26s linear infinite;
}
@keyframes skDrift{from{background-position:0 0}to{background-position:460px 460px}}

/* 页头横幅 */
.sk-banner{position:relative;overflow:hidden;border-bottom:1px solid var(--sk-line);min-height:360px;display:flex;align-items:center}
.sk-banner-bg{
  position:absolute;inset:0;background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;transform:scale(1.03);
}
.sk-banner-mask{
  position:absolute;inset:0;
  background:
    radial-gradient(58% 72% at 80% 18%,rgba(122,92,255,.34),transparent 68%),
    linear-gradient(180deg,rgba(11,10,20,.78) 0%,rgba(11,10,20,.9) 58%,var(--sk-void) 100%);
}
.sk-banner-inner{position:relative;z-index:2;width:100%;padding:64px 0 56px}
.sk-crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--sk-ink-3);margin-bottom:18px}
.sk-crumb li{display:inline-flex;align-items:center;gap:8px}
.sk-crumb li+li::before{content:"/";color:rgba(255,255,255,.2)}
.sk-crumb a{color:var(--sk-ink-3)}
.sk-crumb a:hover{color:var(--sk-accent)}
.sk-crumb [aria-current="page"]{color:var(--sk-ink-2)}
.sk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--sk-accent);margin-bottom:14px;text-transform:uppercase;
}
.sk-eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--sk-accent),transparent)}
.sk-banner h1{font-size:clamp(32px,5vw,56px);line-height:1.1;font-weight:800;letter-spacing:-.02em}
.sk-banner-lead{max-width:720px;margin-top:16px;color:var(--sk-ink-2);font-size:16px;line-height:1.85}
.sk-banner-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}

/* 实时状态条 */
.sk-statusbar{border-bottom:1px solid var(--sk-line);background:var(--sk-deep)}
.sk-statusbar-inner{display:flex;align-items:center;gap:24px;flex-wrap:wrap;padding:16px 0}
.sk-live{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--sk-accent)}
.sk-live-dot{width:8px;height:8px;border-radius:50%;background:var(--sk-accent);box-shadow:0 0 0 4px rgba(53,224,176,.16);animation:skPulse 2.4s var(--ease) infinite}
@keyframes skPulse{0%,100%{box-shadow:0 0 0 4px rgba(53,224,176,.16)}50%{box-shadow:0 0 0 8px rgba(53,224,176,.06)}}
.sk-status-text{font-size:14px;color:var(--sk-ink-2)}
.sk-status-progress{display:flex;align-items:center;gap:14px;flex:1 1 260px;min-width:220px}
.sk-progress{flex:1 1 auto;height:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);overflow:hidden}
.sk-progress span{display:block;height:100%;width:0;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--sk-primary),var(--sk-accent));transition:width .8s var(--ease)}
.sk-status-num{font-size:14px;font-weight:800;color:var(--sk-ink)}

/* 主体布局 */
.sk-main{padding:80px 0 96px}
.sk-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;align-items:start}
.sk-section-head{margin-bottom:36px}
.sk-section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.2;font-weight:700;letter-spacing:-.01em}
.sk-section-head p{margin-top:12px;color:var(--sk-ink-2);font-size:15px;max-width:680px}
.sk-h2-bar{display:inline-flex;align-items:center;gap:12px}
.sk-h2-bar::before{content:"";width:4px;height:24px;border-radius:4px;background:linear-gradient(180deg,var(--sk-primary),var(--sk-accent));display:inline-block}

/* 序列条目 */
.sk-seq{display:flex;flex-direction:column}
.sk-entry{
  display:grid;grid-template-columns:minmax(0,4fr) minmax(0,6fr);gap:28px;align-items:center;
  padding:32px 0;border-bottom:1px solid var(--sk-line);
}
.sk-entry:first-child{padding-top:0}
.sk-entry:last-child{border-bottom:0;padding-bottom:0}
.sk-entry.is-reverse .sk-entry-media{order:2}
.sk-entry-media{position:relative;display:block;border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;background:linear-gradient(140deg,#241E4A,#14112B)}
.sk-entry-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.sk-entry-media:hover img{transform:scale(1.04)}
.sk-entry-body h3{font-size:20px;line-height:1.45;font-weight:700}
.sk-entry-body h3 a:hover{color:var(--sk-accent)}
.sk-entry-body p{margin-top:12px;color:var(--sk-ink-2);font-size:15px;line-height:1.78}
.sk-entry-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:18px}
.sk-entry-info{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--sk-ink-3)}

/* 侧栏 */
.sk-side-inner{position:sticky;top:96px;display:grid;gap:24px}
.sk-side-card{
  background:var(--sk-surface);border:1px solid var(--sk-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);
}
.sk-side-card h3{font-size:16px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:9px}
.sk-side-card h3 i{color:var(--sk-primary);font-size:14px}
.sk-side-chips{display:flex;flex-wrap:wrap;gap:8px}
.sk-mini-list{display:flex;flex-direction:column;gap:2px}
.sk-mini-list li a{
  display:flex;flex-direction:column;gap:4px;padding:12px;border-radius:14px;border:1px solid transparent;
  transition:background-color var(--t),border-color var(--t);
}
.sk-mini-list li a:hover{background:rgba(255,255,255,.04);border-color:var(--sk-line)}
.sk-mini-title{font-size:14px;font-weight:600;line-height:1.5;color:var(--sk-ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sk-mini-time{font-size:12px;color:var(--sk-ink-3)}
.sk-side-cta{
  background:linear-gradient(160deg,rgba(122,92,255,.22),rgba(53,224,176,.08) 70%),var(--sk-deep);
  border:1px solid rgba(122,92,255,.35);
}
.sk-side-cta p{font-size:14px;color:var(--sk-ink-2);margin-bottom:18px;line-height:1.75}

/* FAQ */
.sk-faq-section{padding:0 0 96px}
.sk-faq{display:grid;gap:12px;max-width:920px}
.sk-faq-item{background:var(--sk-surface);border:1px solid var(--sk-line);border-radius:var(--r-card);overflow:hidden;transition:border-color var(--t),box-shadow var(--t)}
.sk-faq-item:hover{border-color:var(--sk-line-strong)}
.sk-faq-item.is-open{border-color:rgba(122,92,255,.45);box-shadow:var(--sh-hover)}
.sk-faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;text-align:left;font-size:17px;font-weight:600;color:var(--sk-ink);transition:color var(--t)}
.sk-faq-item.is-open .sk-faq-q{color:var(--sk-primary)}
.sk-plus{position:relative;width:16px;height:16px;flex:0 0 auto}
.sk-plus::before,.sk-plus::after{content:"";position:absolute;background:var(--sk-ink-2);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease),background-color var(--t)}
.sk-plus::before{left:0;top:7px;width:16px;height:2px}
.sk-plus::after{left:7px;top:0;width:2px;height:16px}
.sk-faq-item.is-open .sk-plus::before{background:var(--sk-primary)}
.sk-faq-item.is-open .sk-plus::after{transform:rotate(90deg);opacity:0;background:var(--sk-primary)}
.sk-faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.sk-faq-a p{padding:0 24px 22px;color:var(--sk-ink-2);font-size:15px;line-height:1.85}

/* 转化面板 */
.sk-cta-panel{background:var(--sk-deep);border-top:1px solid var(--sk-line);border-bottom:1px solid var(--sk-line);position:relative;overflow:hidden}
.sk-cta-inner{position:relative;z-index:2;padding:80px 0}
.sk-cta-inner h2{font-size:clamp(24px,3vw,36px);line-height:1.2;font-weight:700}
.sk-cta-inner>p{margin-top:14px;color:var(--sk-ink-2);font-size:16px;max-width:700px}
.sk-cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.sk-cta-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:44px}
.sk-cta-point{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--sk-ink-2);line-height:1.7}
.sk-cta-point i{color:var(--sk-accent);font-size:15px;margin-top:5px}

/* 订阅表单 */
.sk-form{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;max-width:620px}
.sk-field{flex:1 1 280px}
.sk-field label{display:block;font-size:13px;color:var(--sk-ink-3);margin-bottom:8px}
.sk-input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-input);
  background:rgba(11,10,20,.6);border:1px solid var(--sk-line-strong);color:var(--sk-ink);
  transition:border-color var(--t),box-shadow var(--t);
}
.sk-input::placeholder{color:var(--sk-ink-3)}
.sk-input:focus{outline:none;border-color:var(--sk-primary);box-shadow:0 0 0 3px rgba(122,92,255,.22)}
.sk-form-hint{font-size:13px;color:var(--sk-ink-3);margin-top:12px}

/* 页脚 */
.sk-footer{background:var(--sk-void);border-top:1px solid var(--sk-line);position:relative;overflow:hidden}
.sk-footer>.container{position:relative;z-index:2}
.sk-footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 48px}
.sk-footer h3{font-size:15px;font-weight:700;margin-bottom:16px}
.sk-footer-desc{margin-top:16px;font-size:13px;color:var(--sk-ink-3);line-height:1.8;max-width:340px}
.sk-footer-links{display:grid;gap:10px}
.sk-footer-links a{font-size:14px;color:var(--sk-ink-2)}
.sk-footer-links a:hover{color:var(--sk-accent)}
.sk-footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid var(--sk-line);
}
.sk-footer-bottom span{font-size:12px;color:var(--sk-ink-3)}
.sk-top-btn{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid var(--sk-line-strong);color:var(--sk-ink-2);font-size:13px;font-weight:600;
  transition:all var(--t);
}
.sk-top-btn:hover{color:#fff;border-color:rgba(122,92,255,.55);background:rgba(122,92,255,.12)}

/* 进入动效 */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);transition-delay:var(--d,0ms)}
[data-reveal].is-in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1199px){
  .sk-layout{gap:36px}
  .sk-footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .sk-nav{display:none}
  .sk-burger{display:inline-flex}
  .sk-nav-cta .sk-btn{display:none}
  .sk-layout{grid-template-columns:1fr;gap:40px}
  .sk-side-inner{position:static}
  .sk-entry{grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:22px}
  .sk-footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 36px}
  .sk-cta-points{grid-template-columns:1fr;gap:14px}
}
@media (max-width:767px){
  .sk-nav-wrap{height:64px}
  .sk-banner{min-height:300px}
  .sk-banner-inner{padding:48px 0 40px}
  .sk-banner-lead{font-size:15px}
  .sk-main{padding:56px 0 64px}
  .sk-entry{grid-template-columns:1fr;gap:18px;padding:26px 0}
  .sk-entry.is-reverse .sk-entry-media{order:0}
  .sk-entry-body h3{font-size:18px}
  .sk-faq-section{padding-bottom:64px}
  .sk-cta-inner{padding:56px 0}
  .sk-btn{height:44px;padding:0 22px;font-size:14px}
  .sk-cta-actions .sk-btn{flex:1 1 100%}
  .sk-footer-grid{grid-template-columns:1fr;gap:28px}
  .sk-footer-bottom{flex-direction:column;align-items:flex-start}
  .sk-statusbar-inner{gap:14px}
}
@media (max-width:575px){
  .sk-banner h1{font-size:32px}
  .sk-side-card{padding:20px}
  .sk-faq-q{font-size:16px;padding:18px 18px}
  .sk-faq-a p{padding:0 18px 20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  [data-reveal]{opacity:1 !important;transform:none !important}
  .sk-starfield::before{animation:none}
}

/* roulang page: category2 */
:root{
  --sk-void:#0B0A14;
  --sk-deep:#14112B;
  --sk-surface:#1B1738;
  --sk-line:rgba(255,255,255,.08);
  --sk-line-strong:rgba(255,255,255,.16);
  --sk-ink:#F5F3EF;
  --sk-ink-2:#B7B1CB;
  --sk-ink-3:#7C7691;
  --sk-primary:#7A5CFF;
  --sk-accent:#35E0B0;
  --sk-warm:#F2A93B;

  --radius-card:20px;
  --radius-img:14px;
  --radius-input:12px;
  --radius-pill:999px;

  --shadow-card:0 1px 0 rgba(255,255,255,.06), 0 20px 40px -24px rgba(0,0,0,.8);
  --shadow-hover:0 24px 60px -28px rgba(122,92,255,.55);
  --shadow-float:0 30px 80px -30px rgba(0,0,0,.9);

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

  --fs-h1:clamp(32px,5vw,60px);
  --fs-h2:clamp(24px,3vw,38px);
  --fs-h3:clamp(19px,1.6vw,23px);

  --ease:cubic-bezier(.2,.7,.2,1);
  --dur:220ms;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--sk-void);
  color:var(--sk-ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);}
a:hover{color:#fff;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
:focus-visible{outline:2px solid var(--sk-primary);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:1280px;
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
}

/* ---------- 头部导航 ---------- */
.sk-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  height:72px;
  display:flex;
  align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease);
}
.sk-header.is-scrolled{
  background:rgba(11,10,20,.86);
  border-bottom-color:var(--sk-line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.sk-nav-wrap{
  display:flex;
  align-items:center;
  gap:var(--sp-4);
  justify-content:space-between;
}
.sk-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.sk-logo-mark{width:36px;height:36px;flex:0 0 auto;}
.sk-logo-text{
  font-size:18px;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--sk-ink);
  white-space:nowrap;
}
.sk-logo-text em{font-style:normal;color:var(--sk-primary);}
.sk-nav{
  display:flex;
  align-items:center;
  gap:var(--sp-1);
  margin-inline:auto;
}
.sk-chip{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 16px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:14.5px;
  font-weight:600;
  color:var(--sk-ink-2);
  white-space:nowrap;
  transition:all var(--dur) var(--ease);
}
.sk-chip:hover{
  color:#fff;
  background:rgba(255,255,255,.06);
  border-color:var(--sk-line-strong);
}
.sk-chip.is-active{
  color:#fff;
  background:rgba(122,92,255,.12);
  border-color:rgba(122,92,255,.55);
}
.sk-nav-cta{display:flex;align-items:center;gap:var(--sp-2);flex:0 0 auto;}

.sk-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:700;
  line-height:1;
  white-space:nowrap;
  transition:all var(--dur) var(--ease);
}
.sk-btn-sm{height:40px;padding:0 20px;font-size:14px;}
.sk-btn-primary{
  color:#fff;
  background:linear-gradient(120deg,#7A5CFF 0%,#5F79FF 55%,#35E0B0 130%);
  box-shadow:0 12px 28px -14px rgba(122,92,255,.9);
}
.sk-btn-primary:hover{
  color:#fff;
  filter:brightness(1.06);
  box-shadow:0 16px 34px -14px rgba(122,92,255,1);
}
.sk-btn-primary:active{transform:scale(.98);}
.sk-btn-ghost{
  color:var(--sk-ink);
  background:transparent;
  border:1px solid var(--sk-line-strong);
}
.sk-btn-ghost:hover{
  color:#fff;
  background:rgba(122,92,255,.10);
  border-color:rgba(122,92,255,.6);
}
.sk-btn-ghost:active{transform:scale(.98);}

.sk-burger{
  display:none;
  width:44px;height:44px;
  border-radius:14px;
  border:1px solid var(--sk-line-strong);
  color:var(--sk-ink);
  align-items:center;
  justify-content:center;
  font-size:17px;
}
.sk-burger:hover{background:rgba(255,255,255,.06);}

.sk-drawer{
  position:fixed;
  inset:0;
  z-index:1200;
  background:rgba(11,10,20,.97);
  display:flex;
  flex-direction:column;
  padding:24px;
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur);
}
.sk-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.sk-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-6);}
.sk-drawer-close{
  width:44px;height:44px;border-radius:14px;
  border:1px solid var(--sk-line-strong);
  display:grid;place-items:center;font-size:18px;
}
.sk-drawer-nav{display:flex;flex-direction:column;gap:var(--sp-2);margin-bottom:var(--sp-5);}
.sk-drawer-nav a{
  padding:16px 18px;
  border-radius:16px;
  border:1px solid var(--sk-line);
  background:var(--sk-surface);
  font-size:17px;
  font-weight:700;
  color:var(--sk-ink);
}
.sk-drawer-nav a.is-active{border-color:rgba(122,92,255,.6);color:#fff;background:rgba(122,92,255,.14);}

/* ---------- 分类页头部横幅 ---------- */
.sk-banner{
  position:relative;
  padding:148px 0 52px;
  overflow:hidden;
  background-image:linear-gradient(180deg,rgba(11,10,20,.72) 0%,rgba(11,10,20,.90) 62%,var(--sk-void) 100%),
                   url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--sk-line);
}
.sk-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(1.6px 1.6px at 18% 26%,rgba(255,255,255,.75),transparent 60%),
    radial-gradient(1.4px 1.4px at 62% 18%,rgba(255,255,255,.55),transparent 60%),
    radial-gradient(1.2px 1.2px at 82% 42%,rgba(53,224,176,.7),transparent 60%),
    radial-gradient(1.2px 1.2px at 34% 72%,rgba(242,169,59,.6),transparent 60%),
    radial-gradient(1px 1px at 74% 84%,rgba(255,255,255,.4),transparent 60%);
  background-size:520px 420px;
  opacity:.7;
  pointer-events:none;
  animation:skDrift 20s linear infinite;
}
.sk-banner::after{
  content:"";
  position:absolute;
  right:-140px;top:-120px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(122,92,255,.32) 0%,rgba(122,92,255,0) 68%);
  pointer-events:none;
}
@keyframes skDrift{
  from{background-position:0 0,0 0,0 0,0 0,0 0;}
  to{background-position:520px 420px,520px 420px,520px 420px,520px 420px,520px 420px;}
}
.sk-banner .container{position:relative;z-index:2;}
.sk-breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--sk-ink-3);
  margin-bottom:var(--sp-4);
}
.sk-breadcrumb a{color:var(--sk-ink-3);}
.sk-breadcrumb a:hover{color:var(--sk-ink);}
.sk-breadcrumb .sep{opacity:.6;}
.sk-breadcrumb .current{color:var(--sk-ink-2);}

.sk-banner h1{
  font-size:clamp(30px,4vw,48px);
  line-height:1.14;
  font-weight:800;
  letter-spacing:-.02em;
  color:#fff;
  margin-bottom:var(--sp-3);
}
.sk-banner h1 span{color:var(--sk-accent);}
.sk-banner-lead{
  max-width:720px;
  font-size:16px;
  line-height:1.85;
  color:var(--sk-ink-2);
}
.sk-banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:var(--sp-5);}
.sk-tag{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 14px;
  border-radius:var(--radius-pill);
  border:1px solid var(--sk-line-strong);
  background:rgba(255,255,255,.04);
  font-size:13px;
  color:var(--sk-ink-2);
}

/* ---------- 通用区块 ---------- */
.sk-section{padding:var(--sp-8) 0;}
.sk-section-head{max-width:760px;margin-bottom:var(--sp-6);}
.sk-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--sk-accent);
  margin-bottom:var(--sp-2);
}
.sk-eyebrow::before{
  content:"";
  width:22px;height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--sk-primary),var(--sk-accent));
}
.sk-section h2{
  font-size:var(--fs-h2);
  line-height:1.2;
  font-weight:700;
  letter-spacing:-.01em;
  color:#fff;
  margin-bottom:var(--sp-3);
}
.sk-section-lead{font-size:16px;line-height:1.85;color:var(--sk-ink-2);}

/* ---------- 筛选行 ---------- */
.sk-filter{padding:var(--sp-5) 0 0;}
.sk-filter-scroll{
  display:flex;
  flex-wrap:nowrap;
  gap:10px;
  overflow-x:auto;
  padding-bottom:6px;
  scrollbar-width:none;
}
.sk-filter-scroll::-webkit-scrollbar{display:none;}
.sk-filter-chip{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 20px;
  border-radius:var(--radius-pill);
  border:1px solid var(--sk-line-strong);
  background:transparent;
  color:var(--sk-ink-2);
  font-size:14px;
  font-weight:600;
  transition:all var(--dur) var(--ease);
}
.sk-filter-chip:hover{color:#fff;border-color:rgba(255,255,255,.34);background:rgba(255,255,255,.04);}
.sk-filter-chip.is-active{
  color:#fff;
  border-color:var(--sk-primary);
  background:rgba(122,92,255,.14);
  box-shadow:0 0 0 3px rgba(122,92,255,.12);
}

/* ---------- 双列大图卡 ---------- */
.sk-grid-2{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:var(--sp-4);
  margin-top:var(--sp-5);
}
.sk-event-card{
  position:relative;
  display:flex;
  flex-direction:column;
  background:var(--sk-surface);
  border:1px solid var(--sk-line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.sk-event-card:hover{
  transform:translateY(-4px);
  border-color:rgba(122,92,255,.4);
  box-shadow:var(--shadow-hover);
}
.sk-event-card.is-hidden{display:none;}
.sk-card-media{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:linear-gradient(135deg,rgba(122,92,255,.35),rgba(53,224,176,.18));
}
.sk-card-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 400ms var(--ease);
}
.sk-event-card:hover .sk-card-media img{transform:scale(1.03);}
.sk-card-badge{
  position:absolute;
  top:14px;left:14px;
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  background:rgba(11,10,20,.72);
  color:#fff;
  font-size:12px;
  font-weight:600;
  backdrop-filter:blur(6px);
}
.sk-card-state{
  position:absolute;
  top:14px;right:14px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  font-size:12px;
  font-weight:700;
  background:rgba(11,10,20,.72);
  backdrop-filter:blur(6px);
}
.sk-card-state::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:currentColor;
  box-shadow:0 0 0 3px rgba(255,255,255,.08);
}
.sk-state-running{color:var(--sk-primary);}
.sk-state-soon{color:var(--sk-accent);}
.sk-state-long{color:var(--sk-ink-2);}
.sk-state-reward{color:var(--sk-warm);}

.sk-card-body{
  display:flex;
  flex-direction:column;
  flex:1 1 auto;
  padding:24px;
}
.sk-card-body h3{
  font-size:var(--fs-h3);
  font-weight:700;
  line-height:1.4;
  color:#fff;
  margin-bottom:var(--sp-3);
}
.sk-points{display:grid;gap:8px;margin-bottom:var(--sp-4);}
.sk-points li{
  display:flex;
  gap:10px;
  font-size:14px;
  line-height:1.7;
  color:var(--sk-ink-2);
}
.sk-points i{color:var(--sk-accent);font-size:11px;margin-top:7px;flex:0 0 auto;}
.sk-card-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-3);
  padding-top:16px;
  border-top:1px solid var(--sk-line);
  font-size:13px;
  color:var(--sk-ink-3);
}
.sk-card-foot time{font-variant-numeric:tabular-nums;}
.sk-go{
  width:38px;height:38px;
  border-radius:50%;
  display:grid;
  place-items:center;
  border:1px solid var(--sk-line-strong);
  color:var(--sk-ink);
  font-size:13px;
  transition:all var(--dur) var(--ease);
}
.sk-event-card:hover .sk-go{
  background:linear-gradient(120deg,#7A5CFF,#35E0B0);
  border-color:transparent;
  color:#fff;
  transform:translateX(3px);
}

/* ---------- 数据条 ---------- */
.sk-metrics{
  margin-top:var(--sp-8);
  border:1px solid var(--sk-line-strong);
  border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(20,17,43,.9),rgba(11,10,20,.9));
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  overflow:hidden;
}
.sk-metric{
  padding:32px 24px;
  text-align:center;
  border-left:1px solid var(--sk-line);
}
.sk-metric:first-child{border-left:0;}
.sk-metric .figure{
  font-size:clamp(28px,3vw,40px);
  font-weight:800;
  line-height:1.1;
  color:#fff;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.sk-metric .figure em{font-style:normal;font-size:.5em;color:var(--sk-ink-3);margin-left:4px;}
.sk-metric .label{margin-top:8px;font-size:13px;color:var(--sk-ink-3);}

/* ---------- 转化面板 ---------- */
.sk-cta-band{
  position:relative;
  overflow:hidden;
  border:1px solid var(--sk-line-strong);
  border-radius:28px;
  background:linear-gradient(135deg,rgba(20,17,43,.98),rgba(11,10,20,.98));
  padding:56px;
  box-shadow:var(--shadow-float);
}
.sk-cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(1.5px 1.5px at 14% 30%,rgba(255,255,255,.6),transparent 60%),
    radial-gradient(1.3px 1.3px at 46% 62%,rgba(122,92,255,.7),transparent 60%),
    radial-gradient(1.2px 1.2px at 78% 28%,rgba(53,224,176,.6),transparent 60%),
    radial-gradient(1px 1px at 88% 76%,rgba(242,169,59,.55),transparent 60%);
  background-size:420px 360px;
  opacity:.65;
  pointer-events:none;
  animation:skDrift 24s linear infinite;
}
.sk-cta-band > *{position:relative;z-index:2;}
.sk-cta-band h2{
  font-size:var(--fs-h2);
  font-weight:700;
  line-height:1.22;
  color:#fff;
  margin-bottom:var(--sp-3);
}
.sk-cta-band p{color:var(--sk-ink-2);max-width:640px;}
.sk-cta-actions{display:flex;flex-wrap:wrap;gap:var(--sp-3);margin-top:var(--sp-5);}
.sk-guarantee{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--sp-4);
  margin-top:var(--sp-6);
  padding-top:var(--sp-5);
  border-top:1px solid var(--sk-line);
}
.sk-guarantee li{display:flex;gap:12px;font-size:14px;color:var(--sk-ink-2);}
.sk-guarantee i{color:var(--sk-accent);font-size:14px;margin-top:5px;}

/* ---------- FAQ ---------- */
.sk-faq{display:grid;gap:12px;}
.sk-faq-item{
  background:var(--sk-surface);
  border:1px solid var(--sk-line);
  border-radius:18px;
  overflow:hidden;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.sk-faq-item:hover{border-color:var(--sk-line-strong);}
.sk-faq-item.is-open{border-color:rgba(122,92,255,.45);box-shadow:0 18px 44px -30px rgba(122,92,255,.8);}
.sk-faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-3);
  padding:20px 24px;
  text-align:left;
  font-size:16.5px;
  font-weight:600;
  color:var(--sk-ink);
  transition:color var(--dur) var(--ease);
}
.sk-faq-item.is-open .sk-faq-q{color:var(--sk-primary);}
.sk-faq-q .sk-plus{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--sk-line-strong);
  color:var(--sk-ink-2);
  font-size:12px;
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.sk-faq-item.is-open .sk-faq-q .sk-plus{
  transform:rotate(45deg);
  color:var(--sk-primary);
  border-color:rgba(122,92,255,.6);
}
.sk-faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 300ms var(--ease);
}
.sk-faq-a p{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--sk-ink-2);
}

/* ---------- 页脚 ---------- */
.sk-footer{
  position:relative;
  margin-top:var(--sp-8);
  padding:var(--sp-8) 0 28px;
  background:var(--sk-void);
  border-top:1px solid var(--sk-line);
  overflow:hidden;
}
.sk-footer::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 22%,rgba(255,255,255,.45),transparent 60%),
    radial-gradient(1.2px 1.2px at 42% 68%,rgba(122,92,255,.5),transparent 60%),
    radial-gradient(1.1px 1.1px at 76% 34%,rgba(53,224,176,.45),transparent 60%),
    radial-gradient(1px 1px at 90% 82%,rgba(242,169,59,.4),transparent 60%);
  background-size:480px 400px;
  opacity:.6;
  pointer-events:none;
}
.sk-footer .container{position:relative;z-index:2;}
.sk-footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:var(--sp-6);
  padding-bottom:var(--sp-6);
}
.sk-footer h3{
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  color:#fff;
  margin-bottom:var(--sp-3);
}
.sk-footer-desc{
  margin-top:var(--sp-3);
  font-size:13.5px;
  line-height:1.8;
  color:var(--sk-ink-3);
  max-width:320px;
}
.sk-footer-links{display:grid;gap:10px;}
.sk-footer-links a{font-size:14px;color:var(--sk-ink-2);}
.sk-footer-links a:hover{color:#fff;}
.sk-footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-3);
  padding-top:var(--sp-4);
  border-top:1px solid var(--sk-line);
  font-size:12.5px;
  color:var(--sk-ink-3);
}
.sk-top-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:38px;
  padding:0 18px;
  border-radius:var(--radius-pill);
  border:1px solid var(--sk-line-strong);
  color:var(--sk-ink-2);
  font-size:13px;
  transition:all var(--dur) var(--ease);
}
.sk-top-btn:hover{color:#fff;border-color:rgba(122,92,255,.6);background:rgba(122,92,255,.1);}

/* ---------- 进场动画 ---------- */
.sk-reveal{opacity:0;transform:translateY(12px);transition:opacity 560ms var(--ease),transform 560ms var(--ease);}
.sk-reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .sk-nav{gap:4px;}
  .sk-chip{padding:0 13px;font-size:14px;}
  .sk-cta-band{padding:44px;}
}
@media (max-width:991px){
  .sk-nav{display:none;}
  .sk-burger{display:inline-flex;}
  .sk-banner{padding:120px 0 44px;}
  .sk-section{padding:72px 0;}
  .sk-grid-2{grid-template-columns:1fr;}
  .sk-metrics{grid-template-columns:repeat(2,minmax(0,1fr));}
  .sk-metric:nth-child(3){border-left:0;}
  .sk-metric{border-top:1px solid var(--sk-line);}
  .sk-metric:nth-child(-n+2){border-top:0;}
  .sk-guarantee{grid-template-columns:1fr;}
  .sk-footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-5);}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px;}
  .sk-header{height:64px;}
  .sk-logo-text{font-size:16.5px;}
  .sk-logo-mark{width:32px;height:32px;}
  .sk-banner{padding:104px 0 36px;}
  .sk-banner-lead{font-size:15px;}
  .sk-section{padding:56px 0;}
  .sk-section h2{font-size:clamp(22px,6vw,28px);}
  .sk-section-lead{font-size:15px;}
  .sk-card-body{padding:20px;}
  .sk-faq-q{padding:17px 18px;font-size:15.5px;}
  .sk-faq-a p{padding:0 18px 18px;font-size:14.5px;}
  .sk-cta-band{padding:32px 22px;border-radius:22px;}
  .sk-footer{padding:56px 0 24px;}
  .sk-footer-grid{grid-template-columns:1fr;gap:var(--sp-5);}
  .sk-footer-bottom{flex-direction:column;align-items:flex-start;}
  .sk-btn{height:44px;padding:0 22px;}
  .sk-cta-actions .sk-btn{width:100%;}
}
@media (max-width:419px){
  .sk-metrics{grid-template-columns:1fr;}
  .sk-metric{border-left:0;border-top:1px solid var(--sk-line);}
  .sk-metric:first-child{border-top:0;}
  .sk-banner h1{font-size:28px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .sk-reveal{opacity:1;transform:none;}
}