/* roulang page: index */
:root{
  --c-primary:#6C4CF1;
  --c-primary-dark:#5A3BE0;
  --c-primary-light:#EDE8FF;
  --c-mint:#17D6B6;
  --c-peach:#FF8A5B;
  --c-ink:#17142B;
  --c-sub:#5B5675;
  --c-line:#E7E3F5;
  --c-bg:#F7F5FC;
  --c-white:#FFFFFF;
  --grad-brand:linear-gradient(120deg,#6C4CF1 0%,#17D6B6 100%);
  --grad-dark:linear-gradient(135deg,#16122E 0%,#2A1E5C 100%);
  --r-sm:14px;
  --r-md:20px;
  --r-lg:28px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(23,20,43,.05);
  --sh-2:0 18px 44px -18px rgba(108,76,241,.28);
  --tr:200ms cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:90px}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.25;letter-spacing:-.5px}
p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(108,76,241,.25)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,3.2vw,36px);position:relative;padding-left:18px}
.section-head h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:6px;border-radius:999px;background:var(--grad-brand)}
.section-head p{margin-top:14px;color:var(--c-sub);font-size:16px}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.is-center h2{padding-left:0}
.section-head.is-center h2::before{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);padding:12px 24px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform var(--tr),box-shadow var(--tr),background-color var(--tr),color var(--tr),border-color var(--tr);
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 26px -12px rgba(108,76,241,.7)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px -14px rgba(108,76,241,.75)}
.btn-ghost{background:rgba(255,255,255,.8);color:var(--c-primary);border-color:rgba(108,76,241,.35)}
.btn-ghost:hover{background:#fff;border-color:var(--c-primary);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--c-primary-dark)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 16px 30px -16px rgba(0,0,0,.5)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{border-color:#fff;transform:translateY(-2px)}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-sm{padding:9px 18px;font-size:14px}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;height:72px;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(108,76,241,.12);
  box-shadow:0 1px 0 rgba(23,20,43,.02);
  transition:height var(--tr),background var(--tr),box-shadow var(--tr);
}
.site-header.is-stuck{height:64px;background:rgba(255,255,255,.94);box-shadow:0 12px 30px -20px rgba(23,20,43,.5)}
.header-inner{height:100%;display:flex;align-items:center;gap:20px}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{
  width:36px;height:36px;border-radius:12px;background:var(--grad-brand);
  display:grid;place-items:center;color:#fff;flex:0 0 36px;
  box-shadow:0 8px 18px -10px rgba(108,76,241,.9);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.3px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:12px}
.nav-link{
  position:relative;padding:8px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--c-sub);
  transition:color var(--tr),background-color var(--tr);
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-light)}
.nav-link.is-active{color:var(--c-primary)}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--grad-brand)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  color:var(--c-sub);border:1px solid var(--c-line);background:rgba(255,255,255,.7);
  transition:color var(--tr),border-color var(--tr),transform var(--tr);
}
.icon-btn:hover{color:var(--c-primary);border-color:rgba(108,76,241,.45);transform:translateY(-2px)}
.icon-btn svg{width:18px;height:18px}
.hamburger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line);background:rgba(255,255,255,.8);place-items:center}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);margin:3px auto;transition:transform var(--tr),opacity var(--tr)}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;z-index:140;
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  box-shadow:-20px 0 50px -30px rgba(23,20,43,.6);
  transform:translateX(105%);transition:transform 260ms cubic-bezier(.2,.7,.3,1);
  padding:26px 22px;display:flex;flex-direction:column;gap:8px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-title{font-size:14px;font-weight:700;color:var(--c-sub);margin-bottom:8px}
.drawer a{
  padding:13px 14px;border-radius:var(--r-sm);font-size:15px;font-weight:600;color:var(--c-ink);
  border:1px solid transparent;transition:background-color var(--tr),color var(--tr),border-color var(--tr);
}
.drawer a:hover,.drawer a.is-active{background:var(--c-primary-light);color:var(--c-primary);border-color:rgba(108,76,241,.2)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,20,43,.42);z-index:130;opacity:0;visibility:hidden;
  transition:opacity var(--tr),visibility var(--tr);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;padding:150px 0 64px;
  background:
    radial-gradient(900px 520px at 12% 0%,rgba(108,76,241,.18),transparent 62%),
    radial-gradient(700px 420px at 92% 6%,rgba(23,214,182,.16),transparent 60%),
    linear-gradient(180deg,#F7F5FC 0%,#FCFAFF 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(108,76,241,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(108,76,241,.04) 1px,transparent 1px);
  background-size:34px 34px;
}
.hero::after{
  content:"";position:absolute;width:320px;height:320px;left:-90px;top:200px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.5),transparent 70%);
  filter:blur(90px);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--r-pill);
  background:var(--c-primary-light);color:var(--c-primary-dark);font-size:13px;font-weight:700;
  border:1px solid rgba(108,76,241,.18);
}
.hero-eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--c-mint);display:inline-block}
.hero h1{margin-top:22px;font-size:clamp(30px,5vw,52px);font-weight:800;line-height:1.2;letter-spacing:-.5px}
.hero h1 em{font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:20px;font-size:18px;color:var(--c-sub);max-width:560px}
.hero-cta{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;border-radius:var(--r-lg);border:6px solid #fff;box-shadow:0 30px 60px -30px rgba(23,20,43,.45);
  object-fit:cover;aspect-ratio:4/3;
}
.float-badge{
  position:absolute;display:inline-flex;flex-direction:column;gap:0;
  padding:10px 16px;border-radius:var(--r-md);
  background:rgba(255,255,255,.88);border:1px solid rgba(23,214,182,.6);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  box-shadow:0 14px 30px -18px rgba(23,20,43,.45);
}
.float-badge b{font-size:20px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--c-primary-dark);line-height:1.3}
.float-badge i{font-style:normal;font-size:12px;color:var(--c-sub);letter-spacing:.5px}
.fb-1{top:22px;left:-22px}
.fb-2{right:-18px;top:44%}
.fb-3{left:14px;bottom:-20px}
.hero-stats{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;margin-top:48px}
.stat-pill{
  display:inline-flex;align-items:baseline;gap:8px;padding:10px 20px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.86);border:1px solid var(--c-line);box-shadow:var(--sh-1);
  font-size:14px;font-weight:600;color:var(--c-sub);
}
.stat-pill b{font-size:20px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--c-primary)}

/* ---------- 特性错位网格 ---------- */
.feature-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;align-items:stretch}
.feature-grid.is-reverse{grid-template-columns:1fr 1.25fr}
.feature-main{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:26px;
  box-shadow:var(--sh-1);transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.feature-main:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(108,76,241,.3)}
.feature-main img{border-radius:var(--r-md);width:100%;aspect-ratio:16/9;object-fit:cover;margin-bottom:22px}
.feature-main h3{font-size:21px;margin-bottom:12px}
.feature-main > p{color:var(--c-sub);font-size:15px;margin-bottom:18px}
.feature-side{display:grid;gap:24px}
.feature-card{
  display:flex;gap:18px;align-items:flex-start;padding:26px;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(108,76,241,.3)}
.ico-badge{
  flex:0 0 48px;width:48px;height:48px;border-radius:var(--r-sm);background:var(--c-primary-light);
  display:grid;place-items:center;color:var(--c-primary);
}
.ico-badge svg{width:22px;height:22px}
.feature-card h3{font-size:18px;margin-bottom:6px}
.feature-card p{font-size:14.5px;color:var(--c-sub)}
.check-list{margin-top:4px;display:grid;gap:10px}
.check-list li{position:relative;padding-left:26px;font-size:15px;color:var(--c-sub)}
.check-list li::before{
  content:"";position:absolute;left:0;top:.55em;width:16px;height:16px;border-radius:50%;
  background:rgba(23,214,182,.16);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:.9em;width:6px;height:3px;border-left:2px solid var(--c-mint);
  border-bottom:2px solid var(--c-mint);transform:rotate(-45deg);
}

/* ---------- 场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.scene-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:26px;
  box-shadow:var(--sh-1);transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(108,76,241,.3)}
.scene-num{
  width:38px;height:38px;border-radius:50%;background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;font-size:15px;font-weight:800;margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.scene-card h3{font-size:17px;margin-bottom:8px}
.scene-card p{font-size:14.5px;color:var(--c-sub)}

/* ---------- 证据 ---------- */
.proof-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:24px;align-items:stretch}
.proof-main{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:32px;
  box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:22px;
}
.proof-main img{border-radius:var(--r-md);width:100%;aspect-ratio:16/9;object-fit:cover}
.proof-quote{font-size:17px;font-weight:600;line-height:1.8}
.proof-cite{font-size:14px;color:var(--c-sub)}
.bar-row{display:grid;gap:8px}
.bar-row .bar-label{display:flex;justify-content:space-between;font-size:14px;color:var(--c-sub);font-weight:600}
.bar-row .bar-label b{color:var(--c-primary-dark);font-variant-numeric:tabular-nums}
.bar{height:8px;border-radius:var(--r-pill);background:var(--c-primary-light);overflow:hidden}
.bar span{display:block;height:100%;border-radius:var(--r-pill);background:var(--grad-brand)}
.proof-side{display:grid;gap:24px}
.stat-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:24px;
  box-shadow:var(--sh-1);transition:transform var(--tr),box-shadow var(--tr)
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.stat-card b{display:block;font-size:34px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.2;color:var(--c-primary-dark)}
.stat-card b em{font-style:normal;font-size:16px;color:var(--c-primary)}
.stat-card p{font-size:14px;color:var(--c-sub);margin-top:6px}

/* ---------- 价格 ---------- */
.pricing{background:var(--grad-dark);color:#fff}
.pricing .section-head h2{color:#fff}
.pricing .section-head p{color:rgba(255,255,255,.7)}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  position:relative;padding:32px 28px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  display:flex;flex-direction:column;gap:20px;
  transition:transform var(--tr),border-color var(--tr),background-color var(--tr);
}
.price-card:hover{transform:translateY(-4px);border-color:rgba(23,214,182,.6)}
.price-card.is-featured{
  background:rgba(255,255,255,.12);border:2px solid var(--c-primary);transform:scale(1.06);
  box-shadow:0 30px 70px -30px rgba(108,76,241,.9);
}
.price-card.is-featured:hover{transform:scale(1.06) translateY(-4px)}
.price-flag{
  position:absolute;top:18px;right:18px;padding:5px 12px;border-radius:8px;
  background:var(--c-peach);color:#2b1206;font-size:12px;font-weight:800;letter-spacing:1px;
}
.price-name{font-size:18px;font-weight:800}
.price-amount{display:flex;align-items:baseline;gap:6px;font-variant-numeric:tabular-nums}
.price-amount b{font-size:40px;font-weight:800;line-height:1}
.price-amount span{font-size:14px;color:rgba(255,255,255,.66)}
.price-desc{font-size:14px;color:rgba(255,255,255,.7)}
.price-list{display:grid;gap:12px;font-size:14.5px}
.price-list li{position:relative;padding-left:26px;color:rgba(255,255,255,.92)}
.price-list li::before{content:"";position:absolute;left:0;top:.55em;width:16px;height:16px;border-radius:50%;background:rgba(23,214,182,.2)}
.price-list li::after{content:"";position:absolute;left:5px;top:.9em;width:6px;height:3px;border-left:2px solid var(--c-mint);border-bottom:2px solid var(--c-mint);transform:rotate(-45deg)}
.price-list li.off{color:rgba(255,255,255,.4)}
.price-list li.off::before{background:rgba(255,255,255,.12)}
.price-list li.off::after{border-color:rgba(255,255,255,.4)}
.price-card .btn{margin-top:auto;width:100%}

/* ---------- 最新信息 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(108,76,241,.3)}
.post-link{display:block;height:100%}
.post-media{aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-light)}
.post-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.2,.7,.3,1)}
.post-card:hover .post-media img{transform:scale(1.05)}
.post-body{padding:20px 22px 22px}
.tag{
  display:inline-block;padding:4px 12px;border-radius:var(--r-pill);background:var(--c-primary-light);
  color:var(--c-primary-dark);font-size:12.5px;font-weight:700;margin-bottom:12px;
}
.post-title{
  font-size:17px;font-weight:700;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  font-size:14px;color:var(--c-sub);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--c-sub);border-top:1px dashed var(--c-line);padding-top:14px}
.read-more{color:var(--c-primary);font-weight:700}
.post-card:hover .read-more{color:var(--c-primary-dark)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;padding:56px 24px;
  border:1px dashed rgba(108,76,241,.3);border-radius:var(--r-lg);background:#fff;text-align:center;
}
.empty-art{
  width:104px;height:80px;border-radius:var(--r-md);
  background:linear-gradient(135deg,#EDE8FF 0%,#F7F5FC 100%);
  position:relative;overflow:hidden;
}
.empty-art::before{content:"";position:absolute;left:16px;top:18px;width:52px;height:8px;border-radius:999px;background:rgba(108,76,241,.28)}
.empty-art::after{content:"";position:absolute;left:16px;top:36px;width:72px;height:8px;border-radius:999px;background:rgba(108,76,241,.18)}
.empty-state p{color:var(--c-sub);font-size:15px}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px}
.faq-item{border:1px solid var(--c-line);border-radius:16px;background:#fff;overflow:hidden;transition:border-color var(--tr),box-shadow var(--tr)}
.faq-item.is-open{border-color:rgba(108,76,241,.4);box-shadow:var(--sh-1)}
.faq-q{
  width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:16px 22px;text-align:left;font-size:18px;font-weight:600;color:var(--c-ink);
}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px;transition:transform var(--tr)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px}
.faq-icon::before{left:9px;top:2px;width:2px;height:16px}
.faq-icon::after{left:2px;top:9px;width:16px;height:2px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms cubic-bezier(.2,.7,.3,1)}
.faq-a p{padding:0 22px 22px;font-size:15px;line-height:1.9;color:var(--c-sub)}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 96px}
.cta-box{
  position:relative;overflow:hidden;border-radius:var(--r-lg);padding:56px 48px;
  background:var(--grad-dark);color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-box::before{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.7),transparent 70%);filter:blur(60px);
}
.cta-box h2{position:relative;font-size:clamp(22px,2.8vw,32px);margin-bottom:10px}
.cta-box p{position:relative;color:rgba(255,255,255,.72);font-size:15px;max-width:520px}
.cta-actions{position:relative;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--grad-dark);color:rgba(255,255,255,.78);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:48px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{margin-top:18px;font-size:14.5px;color:rgba(255,255,255,.66);max-width:320px}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:18px;letter-spacing:.5px}
.footer-col ul{display:grid;gap:12px}
.footer-col a,.footer-col span{font-size:14.5px;color:rgba(255,255,255,.72);transition:color var(--tr)}
.footer-col a:hover{color:var(--c-mint)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.55);
}
.footer-bottom .tip{color:rgba(255,255,255,.45)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding:72px 0}
  .hero{padding-top:132px}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero-visual{max-width:560px}
  .feature-grid,.feature-grid.is-reverse{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .proof-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr}
  .price-card.is-featured{transform:none}
  .price-card.is-featured:hover{transform:translateY(-4px)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .main-nav{display:none}
  .hamburger{display:grid}
  .header-actions .btn{display:none}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .cta-band{padding:0 0 56px}
  .hero{padding:118px 0 48px}
  .hero-sub{font-size:16.5px}
  .scene-grid,.post-grid,.footer-grid{grid-template-columns:1fr}
  .cta-box{padding:40px 26px}
  .fb-1{left:0}
  .fb-2{right:0}
  .fb-3{left:8px}
  .float-badge b{font-size:17px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .logo-text{font-size:16px}
  .hero-stats{gap:10px}
  .stat-pill{padding:8px 14px;font-size:13px}
  .stat-pill b{font-size:17px}
  .section-head h2{padding-left:14px}
  .section-head h2::before{width:4px}
  .faq-q{font-size:16px;padding:14px 18px}
  .faq-a p{padding:0 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --brand:#6C4CF1;
  --brand-deep:#5A3BE0;
  --brand-soft:#EDE8FF;
  --mint:#17D6B6;
  --peach:#FF8A5B;
  --ink:#17142B;
  --ink-2:#5B5675;
  --line:#E7E3F5;
  --bg:#F7F5FC;
  --card:#FFFFFF;
  --dark-1:#16122E;
  --dark-2:#2A1E5C;
  --grad:linear-gradient(120deg,#6C4CF1 0%,#17D6B6 100%);
  --r-xs:12px;
  --r-sm:14px;
  --r-md:20px;
  --r-lg:28px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(23,20,43,.05);
  --sh-2:0 18px 44px -18px rgba(108,76,241,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{line-height:1.3;font-weight:800}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 4px rgba(108,76,241,.25);border-radius:6px}

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

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background-image:var(--grad);color:#fff;box-shadow:0 10px 26px -12px rgba(108,76,241,.65)}
.btn-primary:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.btn-ghost{background:rgba(255,255,255,.7);color:var(--brand-deep);border-color:rgba(108,76,241,.28)}
.btn-ghost:hover{transform:translateY(-4px);border-color:var(--brand);background:#fff;box-shadow:var(--sh-2)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.86);
  border:1px solid rgba(23,214,182,.55);
  color:var(--ink);font-size:13px;font-weight:600;
  backdrop-filter:blur(6px);
}
.badge b{color:var(--brand-deep);font-weight:800;font-size:16px}
.chip{
  display:inline-flex;align-items:center;padding:8px 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;font-size:14px;font-weight:500;color:var(--ink-2);
  transition:all .2s var(--ease);
}
.chip:hover{border-color:rgba(108,76,241,.4);color:var(--brand-deep)}
.chip.is-on{background-image:var(--grad);color:#fff;border-color:transparent}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.55);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(108,76,241,.12);
  box-shadow:0 6px 24px -20px rgba(23,20,43,.5);
  transition:background-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-stuck{background:rgba(255,255,255,.94);box-shadow:0 12px 34px -22px rgba(23,20,43,.55)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .25s var(--ease)}
.site-header.is-stuck .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background-image:var(--grad);color:#fff;
  box-shadow:0 8px 20px -10px rgba(108,76,241,.7);
}
.logo-mark svg{width:22px;height:22px}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.2px}
.main-nav{display:flex;align-items:center;gap:8px;margin-left:8px;flex:1 1 auto}
.nav-link{
  position:relative;padding:10px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--ink-2);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--brand-deep);background:rgba(108,76,241,.08)}
.nav-link.is-active{color:var(--brand-deep);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background-image:var(--grad);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(255,255,255,.8);color:var(--ink-2);
  transition:all .2s var(--ease);
}
.icon-btn:hover{color:var(--brand-deep);border-color:rgba(108,76,241,.4);transform:translateY(-2px)}
.icon-btn svg{width:19px;height:19px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line);background:rgba(255,255,255,.85);flex-direction:column;justify-content:center;align-items:center;gap:4px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s var(--ease),opacity .25s var(--ease)}
.nav-toggle.is-active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-mask{position:fixed;inset:0;background:rgba(23,20,43,.4);opacity:0;pointer-events:none;transition:opacity .25s var(--ease);z-index:90}
.nav-mask.is-open{opacity:1;pointer-events:auto}

/* ============ 文章头部 ============ */
.article-hero{position:relative;padding:126px 0 56px;overflow:hidden;border-bottom:1px solid var(--line);
  background:
    radial-gradient(880px 420px at 10% -12%,rgba(108,76,241,.20),transparent 62%),
    radial-gradient(700px 380px at 90% 4%,rgba(23,214,182,.18),transparent 62%),
    linear-gradient(180deg,#F7F5FC 0%,#FFFFFF 100%);
}
.article-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;opacity:.10;
}
.article-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);margin-bottom:20px}
.breadcrumb a{color:var(--ink-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .sep{opacity:.6}
.breadcrumb .cur{color:var(--ink);font-weight:600}
.article-hero .eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:16px}
.article-hero h1{
  font-size:clamp(30px,4.4vw,48px);line-height:1.2;letter-spacing:-.5px;font-weight:800;
  max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:24px;
  font-size:14px;color:var(--ink-2);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(91,86,117,.5)}
.meta-pill{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.85);border:1px solid var(--line);font-size:13px;color:var(--ink-2);
}
.meta-pill svg{width:15px;height:15px;color:var(--brand)}

/* ============ 文章主体布局 ============ */
.article-main{padding:56px 0 96px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start}
.article-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:48px 48px 40px;box-shadow:var(--sh-1);
}
.article-cover{
  border-radius:var(--r-md);overflow:hidden;margin-bottom:36px;border:1px solid var(--line);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* 正文排版 */
.article-body{font-size:16.5px;line-height:1.9;color:var(--ink)}
.article-body>*+*{margin-top:1.25em}
.article-body p{margin:0}
.article-body p+p{margin-top:1.25em}
.article-body h2{
  position:relative;font-size:clamp(21px,2.4vw,27px);font-weight:800;
  margin-top:2em;padding-left:16px;line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;
  background-image:var(--grad);
}
.article-body h3{font-size:19px;font-weight:700;margin-top:1.6em;color:var(--ink)}
.article-body h4{font-size:17px;font-weight:700;margin-top:1.4em;color:var(--brand-deep)}
.article-body ul,.article-body ol{margin-top:1.1em;padding-left:0}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:.6em;color:var(--ink)}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:8px;height:8px;border-radius:50%;
  background-image:var(--grad);
}
.article-body ol{counter-reset:cmsol}
.article-body ol li{counter-increment:cmsol}
.article-body ol li::before{
  content:counter(cmsol);position:absolute;left:0;top:.28em;
  width:18px;height:18px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);font-size:12px;font-weight:700;
}
.article-body a{color:var(--brand-deep);font-weight:600;border-bottom:1px solid rgba(108,76,241,.4)}
.article-body a:hover{border-bottom-color:var(--brand)}
.article-body strong{font-weight:700;color:var(--ink)}
.article-body blockquote{
  margin:1.6em 0;padding:20px 24px;border-left:4px solid;border-radius:0 var(--r-sm) var(--r-sm) 0;
  border-image:linear-gradient(180deg,#6C4CF1,#17D6B6) 1;
  background:var(--brand-soft);color:var(--ink);
}
.article-body blockquote p{margin:0;font-size:16px}
.article-body img{border-radius:16px;margin:1.6em auto;box-shadow:var(--sh-1)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{margin-top:10px;font-size:14px;color:var(--ink-2);text-align:center}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;background:#fff;border-radius:var(--r-sm);overflow:hidden;box-shadow:var(--sh-1)}
.article-body th,.article-body td{padding:12px 16px;border:1px solid var(--line);text-align:left}
.article-body th{background:var(--brand-soft);color:var(--brand-deep);font-weight:700}
.article-body code{background:var(--brand-soft);color:var(--brand-deep);padding:2px 6px;border-radius:6px;font-size:14px}
.article-body hr{border:0;height:1px;background:var(--line);margin:2em 0}

/* 空态 */
.empty-state{
  text-align:center;padding:56px 24px;border-radius:var(--r-md);
  background:linear-gradient(180deg,#FBFAFF 0%,#F3EFFF 100%);border:1px dashed rgba(108,76,241,.3);
}
.empty-art{
  width:88px;height:88px;margin:0 auto 20px;border-radius:24px;display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);color:var(--brand);
}
.empty-art svg{width:38px;height:38px}
.empty-state h2{font-size:22px;margin-bottom:12px}
.empty-state p{color:var(--ink-2);font-size:15px;max-width:420px;margin:0 auto 24px}

/* 文末标签 */
.article-tags{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.article-tags .label{font-size:14px;color:var(--ink-2);margin-right:4px}
.article-foot{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:28px}

/* ============ 侧栏 ============ */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:24px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);padding:26px;box-shadow:var(--sh-1)}
.side-card h2{font-size:17px;font-weight:800;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.side-card h2::before{content:"";width:4px;height:16px;border-radius:4px;background-image:var(--grad)}
.side-links li+li{margin-top:10px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 14px;border-radius:var(--r-sm);background:#FBFAFF;border:1px solid var(--line);
  font-size:14.5px;font-weight:600;color:var(--ink);transition:all .2s var(--ease);
}
.side-links a span.arw{color:var(--brand);font-weight:700}
.side-links a:hover{transform:translateY(-4px);border-color:rgba(108,76,241,.35);box-shadow:var(--sh-2);color:var(--brand-deep)}
.side-note{background:linear-gradient(150deg,#1B1640 0%,#2A1E5C 100%);border:0;color:#fff}
.side-note h2{color:#fff}
.side-note h2::before{background-image:var(--grad)}
.side-note p{font-size:14px;color:rgba(255,255,255,.78);margin-bottom:18px}
.side-note .btn{width:100%}
.side-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.7}
.side-list li+li{margin-top:12px}
.side-list b{color:var(--mint);font-weight:800}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{
  position:relative;padding-left:18px;font-size:clamp(24px,3.2vw,34px);letter-spacing:-.3px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:5px;border-radius:5px;
  background-image:var(--grad);
}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:16px}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* 相关推荐 */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(108,76,241,.3)}
.post-thumb{overflow:hidden;background:var(--brand-soft)}
.post-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-body h3{font-size:17px;line-height:1.5;font-weight:700}
.post-body h3 a:hover{color:var(--brand-deep)}
.post-body p{font-size:14.5px;color:var(--ink-2);line-height:1.75}
.post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--ink-2)}
.post-foot .more{color:var(--brand-deep);font-weight:700}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 24px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:rgba(108,76,241,.3);box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;min-height:64px;text-align:left;font-size:17px;font-weight:600;line-height:1.5;
}
.faq-q .sign{
  position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand-deep);display:grid;place-items:center;
  transition:transform .25s var(--ease),background-color .25s var(--ease),color .25s var(--ease);
}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-q .sign::before{width:12px;height:2px}
.faq-q .sign::after{width:2px;height:12px}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg);background-image:var(--grad);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--ink-2)}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(135deg,#16122E 0%,#2A1E5C 100%);
  color:#fff;padding:64px 56px;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:40px;align-items:center;
  box-shadow:0 30px 60px -34px rgba(23,20,43,.6);
}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-140px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,214,182,.42),transparent 68%);
}
.cta-band h2{font-size:clamp(24px,3vw,32px);letter-spacing:-.3px;position:relative;z-index:1}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.78);font-size:15.5px;position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1;justify-content:flex-end}
.cta-band .btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.34)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.16);border-color:#fff}

/* ============ 页脚 ============ */
.site-footer{
  background:linear-gradient(135deg,#16122E 0%,#2A1E5C 100%);
  color:rgba(255,255,255,.78);padding:72px 0 0;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.7);max-width:320px}
.footer-col h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-col li+li{margin-top:12px}
.footer-col a,.footer-col span{font-size:14.5px;color:rgba(255,255,255,.7);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--mint)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.14);padding:22px 24px 28px;font-size:13.5px;color:rgba(255,255,255,.6);
}
.footer-bottom .tip{color:rgba(255,255,255,.5)}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:32px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:static;top:auto}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:48px 36px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .article-card{padding:36px 32px 32px}
}
@media (max-width:900px){
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:290px;max-width:84vw;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:88px 22px 32px;margin-left:0;
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(16px);
    border-left:1px solid var(--line);
    box-shadow:-18px 0 40px -26px rgba(23,20,43,.5);
    transform:translateX(101%);transition:transform .28s var(--ease);
    z-index:95;overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{padding:14px 16px;font-size:16px;border-radius:var(--r-sm)}
  .nav-link.is-active{background:var(--brand-soft)}
  .nav-link.is-active::after{display:none}
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .faq-wrap{grid-template-columns:minmax(0,1fr)}
  .article-hero{padding:110px 0 44px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .article-main{padding:40px 0 72px}
  .article-card{padding:28px 20px;border-radius:var(--r-md)}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:32px}
  .article-body{font-size:16px}
  .cta-band{padding:40px 24px;border-radius:var(--r-md)}
  .logo-text{font-size:16.5px}
}
@media (max-width:520px){
  .header-inner{gap:12px}
  .article-hero h1{font-size:clamp(24px,7vw,30px)}
  .btn{padding:13px 20px;font-size:14px}
  .cta-actions .btn{width:100%}
  .article-meta{gap:8px 12px}
  .side-card{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --brand:#6C4CF1;
  --brand-deep:#5A3BE0;
  --brand-soft:#EDE8FF;
  --mint:#17D6B6;
  --peach:#FF8A5B;
  --ink:#17142B;
  --ink-2:#5B5675;
  --line:#E7E3F5;
  --bg:#F7F5FC;
  --white:#FFFFFF;
  --dark-1:#16122E;
  --dark-2:#2A1E5C;
  --grad:linear-gradient(120deg,#6C4CF1 0%,#17D6B6 100%);
  --radius-sm:14px;
  --radius:20px;
  --radius-lg:28px;
  --pill:999px;
  --shadow:0 2px 8px rgba(23,20,43,.05);
  --shadow-hover:0 18px 44px -18px rgba(108,76,241,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 4px rgba(108,76,241,.25);border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:72px;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(108,76,241,.12);
  box-shadow:0 2px 8px rgba(23,20,43,.05);
  transition:height .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-stuck{height:64px;background:rgba(255,255,255,.94);box-shadow:0 12px 32px -22px rgba(23,20,43,.5)}
.header-inner{height:100%;display:flex;align-items:center;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.2px;white-space:nowrap}
.logo-mark{
  width:34px;height:34px;border-radius:11px;background:var(--grad);
  display:grid;place-items:center;color:#fff;flex:0 0 auto;
  box-shadow:0 8px 18px -10px rgba(108,76,241,.9);
}
.logo-mark svg{width:19px;height:19px}
.logo-text{background:linear-gradient(120deg,#17142B 30%,#5A3BE0 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 15px;border-radius:var(--pill);
  font-size:15px;font-weight:500;color:var(--ink-2);
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand);font-weight:700;background:rgba(237,232,255,.7)}
.nav-link.is-active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:3px;height:2px;border-radius:2px;background:var(--grad);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  color:var(--ink-2);border:1px solid rgba(108,76,241,.16);background:rgba(255,255,255,.6);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(108,76,241,.45);background:#fff;transform:translateY(-2px)}
.icon-btn svg{width:19px;height:19px}
.hamburger{display:none;width:42px;height:42px;border-radius:12px;place-items:center;color:var(--brand);border:1px solid rgba(108,76,241,.2);background:rgba(255,255,255,.7)}
.hamburger svg{width:22px;height:22px}

/* 移动抽屉 */
.drawer-backdrop{position:fixed;inset:0;background:rgba(23,20,43,.4);backdrop-filter:blur(2px);z-index:90;opacity:0;pointer-events:none;transition:opacity .28s var(--ease)}
.drawer-backdrop.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:100;
  background:rgba(255,255,255,.96);backdrop-filter:blur(16px);
  border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .32s var(--ease);
  padding:22px 22px 30px;display:flex;flex-direction:column;gap:22px;
  box-shadow:-20px 0 50px -30px rgba(23,20,43,.6);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  display:block;padding:13px 16px;border-radius:var(--radius-sm);font-size:16px;font-weight:600;color:var(--ink-2);
  background:rgba(247,245,252,.8);transition:color .2s var(--ease),background .2s var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--brand);background:var(--brand-soft)}
.drawer-note{font-size:13px;line-height:1.8;color:var(--ink-2);margin-top:auto}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 28px;border-radius:var(--pill);
  font-size:15px;font-weight:700;letter-spacing:.2px;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px -14px rgba(108,76,241,.85)}
.btn-primary:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{border-color:rgba(108,76,241,.35);color:var(--brand);background:rgba(255,255,255,.72)}
.btn-ghost:hover{transform:translateY(-4px);background:#fff;border-color:var(--brand);box-shadow:var(--shadow-hover)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none}
.pill-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--pill);
  font-size:14px;font-weight:600;color:var(--brand);
  background:rgba(255,255,255,.82);border:1px solid rgba(108,76,241,.18);
  box-shadow:var(--shadow);
}
.pill-badge.is-mint{border-color:rgba(23,214,182,.45);color:#0E8E79;background:rgba(255,255,255,.9)}
.pill-badge.is-peach{border-color:rgba(255,138,91,.45);color:#C4562A;background:rgba(255,255,255,.9)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--grad);flex:0 0 auto}
.num{font-variant-numeric:tabular-nums}

/* ============ 首屏 ============ */
.page-hero{
  position:relative;padding:142px 0 76px;overflow:hidden;
  background:
    radial-gradient(120% 92% at 10% 0%, #EDE8FF 0%, rgba(247,245,252,0) 62%),
    radial-gradient(90% 80% at 94% 6%, rgba(23,214,182,.16) 0%, rgba(247,245,252,0) 60%),
    var(--bg);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(23,20,43,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(23,20,43,.045) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(80% 70% at 40% 20%,#000 0%,transparent 78%);
  mask-image:radial-gradient(80% 70% at 40% 20%,#000 0%,transparent 78%);
}
.glow{position:absolute;width:320px;height:320px;border-radius:50%;filter:blur(86px);pointer-events:none;z-index:0}
.glow-1{top:-80px;left:-60px;background:rgba(108,76,241,.3)}
.glow-2{top:120px;right:-80px;background:rgba(23,214,182,.26)}
.breadcrumb{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);margin-bottom:20px}
.breadcrumb a{color:var(--ink-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{opacity:.55}
.breadcrumb .current{color:var(--brand);font-weight:600}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:52px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--pill);
  background:rgba(237,232,255,.9);color:var(--brand);font-size:13px;font-weight:700;letter-spacing:.06em;margin-bottom:20px;
}
h1{
  font-size:clamp(30px,5vw,52px);font-weight:800;line-height:1.2;letter-spacing:-.5px;
  margin-bottom:20px;
}
h1 .hl{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;line-height:1.9;color:var(--ink-2);max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px}
.hero-visual{position:relative}
.hero-img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--radius-lg);border:6px solid #fff;
  box-shadow:0 26px 60px -30px rgba(108,76,241,.55);
}
.float-badge{
  position:absolute;display:flex;flex-direction:column;gap:0;
  padding:10px 16px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.88);backdrop-filter:blur(8px);
  border:1px solid rgba(23,214,182,.55);
  box-shadow:0 14px 30px -18px rgba(23,20,43,.5);
}
.float-badge strong{font-size:20px;font-weight:800;line-height:1.2;color:var(--brand);font-variant-numeric:tabular-nums}
.float-badge em{font-size:12px;font-style:normal;color:var(--ink-2);letter-spacing:.04em}
.fb-1{top:22px;left:-18px}
.fb-2{bottom:96px;right:-14px}
.fb-3{bottom:24px;left:24px}

/* ============ 通用板块 ============ */
.section{padding:var(--sec) 0;position:relative}
.section.is-tight{padding-top:0}
.section-head{max-width:740px;margin-bottom:36px}
.section-eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.1em;
  color:var(--brand);background:var(--brand-soft);padding:6px 14px;border-radius:var(--pill);margin-bottom:16px;
}
.section-title{
  position:relative;padding-left:18px;
  font-size:clamp(24px,3.2vw,36px);font-weight:800;line-height:1.28;letter-spacing:-.5px;margin-bottom:14px;
}
.section-title::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:6px;border-radius:6px;background:var(--grad)}
.section-title.center{padding-left:0;text-align:center}
.section-title.center::before{display:none}
.section-desc{font-size:16px;line-height:1.9;color:var(--ink-2)}

/* 标签条 */
.filter-bar{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.filter-tab{
  padding:10px 20px;border-radius:var(--pill);font-size:15px;font-weight:600;
  color:var(--ink-2);background:rgba(255,255,255,.85);border:1px solid var(--line);
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.filter-tab:hover{color:var(--brand);border-color:rgba(108,76,241,.4);transform:translateY(-3px)}
.filter-tab.is-active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 12px 26px -16px rgba(108,76,241,.9)}
.tab-panel{display:none}
.tab-panel.is-active{display:block;animation:fadeUp .34s var(--ease) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.panel-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 28px;box-shadow:var(--shadow);
}
.panel-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.panel-card p{font-size:15px;line-height:1.9;color:var(--ink-2)}
.panel-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.tag{font-size:13px;font-weight:600;padding:6px 14px;border-radius:var(--pill);background:var(--brand-soft);color:var(--brand)}
.tag.is-mint{background:rgba(23,214,182,.14);color:#0E8E79}
.tag.is-peach{background:rgba(255,138,91,.16);color:#C4562A}

/* 主区：大图卡 + 侧栏 */
.cat-layout{display:grid;grid-template-columns:minmax(0,1.62fr) minmax(0,.88fr);gap:32px;align-items:start}
.feature-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3)}
.feature-cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.feature-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.feature-card:hover .feature-cover img{transform:scale(1.04)}
.cover-badge{
  position:absolute;top:18px;left:18px;padding:6px 14px;border-radius:var(--pill);
  background:var(--peach);color:#fff;font-size:12px;font-weight:700;letter-spacing:.04em;
  box-shadow:0 10px 22px -14px rgba(255,138,91,.9);
}
.feature-body{padding:28px 30px 30px}
.feature-body h3{font-size:22px;font-weight:800;line-height:1.4;margin-bottom:12px}
.feature-body > p{font-size:15px;color:var(--ink-2);line-height:1.9;margin-bottom:20px}
.check-list{display:grid;gap:12px;margin-bottom:24px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink)}
.check-list svg{width:20px;height:20px;flex:0 0 auto;margin-top:4px;color:var(--mint)}
.meta-row{display:flex;flex-wrap:wrap;gap:18px;font-size:14px;color:var(--ink-2);border-top:1px dashed var(--line);padding-top:18px}
.side-stack{display:grid;gap:22px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.side-card h3{font-size:16px;font-weight:800;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:4px;background:var(--grad)}
.stat-list{display:grid;gap:14px}
.stat-list li{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-size:15px;color:var(--ink-2);border-bottom:1px dashed var(--line);padding-bottom:12px}
.stat-list li:last-child{border-bottom:0;padding-bottom:0}
.stat-list b{font-size:20px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums}
.side-card p{font-size:14px;line-height:1.85;color:var(--ink-2)}
.subscribe-form{display:grid;gap:12px;margin-top:16px}
.subscribe-form input{
  height:48px;padding:0 16px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--bg);color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.subscribe-form input::placeholder{color:#9C97B4}
.subscribe-form input:focus{outline:none;background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(108,76,241,.16)}
.form-hint{font-size:13px;color:var(--ink-2);line-height:1.7}
.form-msg{font-size:13px;font-weight:600;color:#0E8E79;min-height:20px}

/* 错位网格：1 大 2 小 */
.offset-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.95fr);gap:28px;align-items:stretch}
.offset-col{display:grid;gap:28px;align-content:start}
.info-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3)}
.info-card .cover{aspect-ratio:16/10;overflow:hidden}
.info-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.info-card:hover .cover img{transform:scale(1.05)}
.info-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.info-body h3{font-size:19px;font-weight:800;line-height:1.45}
.info-body p{font-size:15px;line-height:1.9;color:var(--ink-2)}
.info-card.is-row{flex-direction:row}
.info-card.is-row .cover{flex:0 0 42%;aspect-ratio:auto;min-height:170px}
.info-card.is-row .info-body{padding:22px 24px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand);margin-top:auto;transition:gap .2s var(--ease)}
.link-more:hover{gap:11px}
.link-more svg{width:15px;height:15px}

/* 流程步骤 */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;counter-reset:step}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px 26px;box-shadow:var(--shadow);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3)}
.step-num{
  width:44px;height:44px;border-radius:50%;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:17px;margin-bottom:16px;
  box-shadow:0 12px 24px -14px rgba(108,76,241,.9);font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;font-weight:700;margin-bottom:8px}
.step p{font-size:14px;line-height:1.85;color:var(--ink-2)}

/* 数据证据区 */
.evidence{background:linear-gradient(135deg,#16122E 0%,#2A1E5C 100%);border-radius:var(--radius-lg);padding:52px 48px;color:#fff;position:relative;overflow:hidden}
.evidence::after{content:"";position:absolute;width:360px;height:360px;border-radius:50%;background:rgba(23,214,182,.22);filter:blur(90px);right:-90px;top:-110px}
.evidence-inner{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.metric span{display:block;font-size:13px;letter-spacing:.1em;color:rgba(255,255,255,.66);margin-bottom:10px}
.metric strong{display:block;font-size:clamp(28px,4vw,40px);font-weight:800;background:linear-gradient(120deg,#fff 20%,#17D6B6 100%);-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums;line-height:1.15}
.metric p{font-size:14px;color:rgba(255,255,255,.72);margin-top:10px;line-height:1.8}
.progress{height:8px;border-radius:var(--pill);background:rgba(255,255,255,.16);overflow:hidden;margin-top:14px}
.progress i{display:block;height:100%;width:96%;border-radius:var(--pill);background:var(--grad)}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.faq-item:hover{border-color:rgba(108,76,241,.35);box-shadow:var(--shadow)}
.faq-item.is-open{border-color:rgba(108,76,241,.45);box-shadow:var(--shadow-hover)}
.faq-q{
  width:100%;min-height:64px;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:18px;
  text-align:left;font-size:18px;font-weight:600;color:var(--ink);
}
.faq-icon{flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid rgba(108,76,241,.3);display:grid;place-items:center;color:var(--brand);transition:transform .28s var(--ease),background .28s var(--ease),color .28s var(--ease)}
.faq-icon svg{width:14px;height:14px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff;border-color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s var(--ease)}
.faq-a-inner{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--ink-2)}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  padding:56px 48px;background:linear-gradient(120deg,#6C4CF1 0%,#5A3BE0 45%,#17D6B6 130%);
  color:#fff;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:0 30px 60px -34px rgba(108,76,241,.85);
}
.cta-band::after{content:"";position:absolute;width:320px;height:320px;border-radius:50%;background:rgba(255,255,255,.16);filter:blur(70px);left:-80px;bottom:-140px}
.cta-copy{position:relative;z-index:1;max-width:620px}
.cta-copy h2{font-size:clamp(22px,3vw,32px);font-weight:800;line-height:1.35;margin-bottom:12px}
.cta-copy p{font-size:15px;line-height:1.9;color:rgba(255,255,255,.88)}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:14px}
.btn-white{background:#fff;color:var(--brand-deep)}
.btn-white:hover{transform:translateY(-4px);box-shadow:0 20px 40px -22px rgba(0,0,0,.6)}
.btn-outline-w{border-color:rgba(255,255,255,.62);color:#fff;background:rgba(255,255,255,.1)}
.btn-outline-w:hover{transform:translateY(-4px);background:rgba(255,255,255,.2);border-color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:linear-gradient(135deg,#16122E 0%,#2A1E5C 100%);color:rgba(255,255,255,.78);padding:70px 0 26px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand .logo{color:#fff;margin-bottom:18px}
.footer-brand .logo-text{-webkit-text-fill-color:#fff;color:#fff;background:none}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:330px}
.footer-col h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.7);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--mint)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.56);
}
.footer-bottom .tip{color:rgba(255,255,255,.42)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sec:72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-sub{max-width:none}
  .fb-1{left:10px}
  .fb-2{right:10px}
  .cat-layout{grid-template-columns:1fr}
  .offset-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .evidence-inner{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .main-nav{display:none}
  .hamburger{display:grid}
  .header-actions .btn{display:none}
  .site-header{height:66px}
  .page-hero{padding:118px 0 60px}
  .evidence{padding:40px 26px}
  .cta-band{padding:40px 26px}
}
@media (max-width:768px){
  :root{--sec:56px}
  .container{padding:0 18px}
  .info-card.is-row{flex-direction:column}
  .info-card.is-row .cover{flex:none;aspect-ratio:16/10;min-height:0}
  .float-badge{padding:8px 13px}
  .float-badge strong{font-size:17px}
  .feature-body{padding:22px 20px 24px}
  .faq-q{font-size:16px;padding:14px 18px}
  .faq-a-inner{padding:0 18px 20px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .steps{grid-template-columns:1fr}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .fb-3{left:14px}
  .pill-badge{font-size:13px;padding:7px 13px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --brand:#6C4CF1;
  --brand-deep:#5A3BE0;
  --brand-soft:#EDE8FF;
  --mint:#17D6B6;
  --peach:#FF8A5B;
  --ink:#17142B;
  --ink-2:#5B5675;
  --line:#E7E3F5;
  --bg:#F7F5FC;
  --card:#FFFFFF;
  --grad:linear-gradient(120deg,#6C4CF1 0%,#17D6B6 100%);
  --grad-dark:linear-gradient(135deg,#16122E 0%,#2A1E5C 100%);
  --r-sm:14px;
  --r-md:20px;
  --r-lg:28px;
  --r-pill:999px;
  --shadow:0 2px 8px rgba(23,20,43,.05);
  --shadow-hover:0 18px 44px -18px rgba(108,76,241,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:96px;
  --nav-h:72px;
  --font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.3px;line-height:1.25}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 4px rgba(108,76,241,.25);border-radius:6px}
.num{font-variant-numeric:tabular-nums}

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

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(108,76,241,.12);
  box-shadow:0 2px 10px rgba(23,20,43,.04);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-stuck{
  background:rgba(255,255,255,.94);
  box-shadow:0 10px 30px -18px rgba(23,20,43,.35);
}
.nav-wrap{
  display:flex;align-items:center;gap:24px;
  height:var(--nav-h);
  transition:height .25s var(--ease);
}
.site-header.is-stuck .nav-wrap{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;letter-spacing:-.3px}
.logo:hover{color:var(--ink)}
.logo-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 38px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;
  box-shadow:0 10px 22px -12px rgba(108,76,241,.75);
}
.logo-mark svg{width:22px;height:22px;display:block}
.logo-text{font-size:18px;white-space:nowrap}

.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;
  padding:10px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--ink-2);
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  border-radius:2px;background:var(--grad);opacity:0;transform:scaleX(.4);
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.nav-link:hover{color:var(--brand-deep);background:rgba(108,76,241,.07)}
.nav-link.is-active{color:var(--brand-deep)}
.nav-link.is-active::after{opacity:1;transform:scaleX(1)}

.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:42px;height:42px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:rgba(255,255,255,.7);color:var(--ink-2);
  transition:.2s var(--ease);
}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{color:var(--brand);border-color:rgba(108,76,241,.35);transform:translateY(-2px);box-shadow:var(--shadow-hover)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);
  padding:13px 26px;
  font-size:15px;font-weight:700;letter-spacing:.2px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  will-change:transform;
}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-primary{
  background:var(--grad);color:#fff;
  box-shadow:0 12px 26px -14px rgba(108,76,241,.85);
}
.btn-primary:hover{color:#fff;transform:translateY(-3px);box-shadow:0 20px 40px -18px rgba(108,76,241,.9)}
.btn-ghost{
  border:1.5px solid rgba(108,76,241,.35);color:var(--brand-deep);background:rgba(255,255,255,.6);
}
.btn-ghost:hover{color:var(--brand-deep);border-color:var(--brand);transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.btn-light{background:#fff;color:var(--brand-deep);box-shadow:0 12px 26px -18px rgba(0,0,0,.6)}
.btn-light:hover{color:var(--brand);transform:translateY(-3px)}
.btn:active{transform:translateY(-1px) scale(.99)}

.hamburger{
  display:none;width:44px;height:44px;border-radius:14px;
  border:1px solid var(--line);background:rgba(255,255,255,.75);
  align-items:center;justify-content:center;
}
.hamburger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);position:relative;transition:.25s var(--ease)}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;border-radius:2px;background:var(--ink);
  transition:.25s var(--ease);
}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.hamburger.is-open span{background:transparent}
.hamburger.is-open span::before{top:0;transform:rotate(45deg)}
.hamburger.is-open span::after{top:0;transform:rotate(-45deg)}

/* drawer */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:90;
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-left:1px solid var(--line);
  box-shadow:-20px 0 50px -30px rgba(23,20,43,.5);
  transform:translateX(105%);
  transition:transform .3s var(--ease);
  padding:88px 24px 32px;
  display:flex;flex-direction:column;gap:8px;
}
.drawer.is-open{transform:translateX(0)}
.drawer a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-radius:var(--r-sm);
  font-weight:600;color:var(--ink);
  background:rgba(237,232,255,.5);
}
.drawer a.is-active{background:var(--grad);color:#fff}
.drawer a:hover{color:var(--brand-deep)}
.drawer a.is-active:hover{color:#fff}
.drawer-scrim{
  position:fixed;inset:0;z-index:85;background:rgba(23,20,43,.35);
  opacity:0;visibility:hidden;transition:.28s var(--ease);
}
.drawer-scrim.is-open{opacity:1;visibility:visible}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:calc(var(--nav-h) + 64px) 0 72px;
  overflow:hidden;
  background:
    radial-gradient(900px 520px at 12% 0%,rgba(108,76,241,.20),rgba(247,245,252,0) 65%),
    radial-gradient(700px 460px at 92% 18%,rgba(23,214,182,.16),rgba(247,245,252,0) 62%),
    linear-gradient(180deg,#FBF9FF 0%,#F7F5FC 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(108,76,241,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(108,76,241,.045) 1px,transparent 1px);
  background-size:44px 44px;
  opacity:.9;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:320px;height:320px;border-radius:50%;
  right:-90px;top:60px;filter:blur(70px);background:rgba(108,76,241,.30);pointer-events:none;
}
.hero .blob-2{
  position:absolute;width:320px;height:320px;border-radius:50%;
  left:-120px;bottom:-140px;filter:blur(80px);background:rgba(23,214,182,.24);pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:rgba(237,232,255,.9);color:var(--brand-deep);
  font-size:13px;font-weight:700;letter-spacing:.4px;
  border:1px solid rgba(108,76,241,.18);
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--grad);display:inline-block}
.hero h1{
  margin-top:22px;
  font-size:clamp(30px,5vw,52px);
  line-height:1.2;letter-spacing:-.5px;font-weight:800;
}
.hero h1 .hl{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:18px;max-width:560px;font-size:17px;color:var(--ink-2)}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero-badges{margin-top:38px;display:flex;flex-wrap:wrap;gap:12px}
.data-pill{
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 18px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.82);
  border:1px solid rgba(108,76,241,.16);
  box-shadow:var(--shadow);
  font-size:14px;color:var(--ink-2);
}
.data-pill b{font-size:16px;color:var(--ink);font-variant-numeric:tabular-nums}
.data-pill .dot{width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(23,214,182,.18)}

.hero-visual{position:relative}
.hero-visual img{
  width:100%;border-radius:var(--r-lg);border:6px solid #fff;
  box-shadow:0 30px 60px -30px rgba(23,20,43,.55);
  aspect-ratio:4/3;object-fit:cover;
}
.float-badge{
  position:absolute;
  background:rgba(255,255,255,.92);
  border:1px solid rgba(23,214,182,.5);
  border-radius:18px;
  padding:12px 16px;
  box-shadow:0 18px 34px -20px rgba(23,20,43,.5);
  min-width:118px;
}
.float-badge strong{display:block;font-size:22px;line-height:1.2;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums}
.float-badge span{font-size:12.5px;color:var(--ink-2)}
.fb-1{left:-22px;top:34px}
.fb-2{right:-14px;top:52%;}
.fb-3{left:24px;bottom:-24px;border-color:rgba(108,76,241,.4)}

/* ---------- sections ---------- */
.section{padding:var(--sec) 0}
.section-alt{background:linear-gradient(180deg,rgba(237,232,255,.45),rgba(247,245,252,0))}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-title{
  position:relative;padding-left:18px;
  font-size:clamp(24px,3.2vw,36px);
}
.section-title::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:5px;border-radius:4px;background:var(--grad);
}
.section-head.center .section-title{padding-left:0}
.section-head.center .section-title::before{display:none}
.section-sub{margin-top:16px;color:var(--ink-2);font-size:16px}

/* filter */
.filter-bar{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px}
.filter-chip{
  padding:9px 20px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  font-size:14px;font-weight:600;
  transition:.2s var(--ease);
}
.filter-chip:hover{color:var(--brand-deep);border-color:rgba(108,76,241,.4);transform:translateY(-2px)}
.filter-chip.is-on{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 12px 26px -16px rgba(108,76,241,.9)}

/* rank list */
.rank-list{display:flex;flex-direction:column;gap:20px}
.rank-item{
  display:grid;grid-template-columns:236px 1fr;gap:26px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--shadow);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.rank-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3)}
.rank-item.is-hidden{display:none}
.rank-media{position:relative;border-radius:16px;overflow:hidden}
.rank-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s var(--ease)}
.rank-item:hover .rank-media img{transform:scale(1.05)}
.rank-no{
  position:absolute;left:12px;top:12px;
  min-width:38px;height:38px;padding:0 10px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;font-weight:800;font-size:16px;
  font-variant-numeric:tabular-nums;
  box-shadow:0 10px 20px -12px rgba(23,20,43,.7);
}
.rank-no.plain{background:rgba(23,20,43,.72)}
.rank-body{min-width:0}
.rank-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.rank-title{font-size:20px;font-weight:700}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;
  background:var(--brand-soft);color:var(--brand-deep);
}
.tag.mint{background:rgba(23,214,182,.14);color:#0E9E86}
.tag.peach{background:rgba(255,138,91,.16);color:#C4522A}
.rank-desc{margin-top:10px;color:var(--ink-2);font-size:15px}
.rank-tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.rank-meta{margin-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:13.5px;color:var(--ink-2)}
.meter{flex:1 1 200px;min-width:160px;height:8px;border-radius:var(--r-pill);background:#EFECFA;overflow:hidden}
.meter-fill{display:block;height:100%;border-radius:var(--r-pill);background:var(--grad)}
.rank-link{font-weight:700;font-size:14px;color:var(--brand-deep);white-space:nowrap}
.rank-link:hover{color:var(--brand);text-decoration:underline}

/* stat strip */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:36px 32px;box-shadow:var(--shadow);
}
.stat b{display:block;font-size:clamp(28px,4vw,40px);font-weight:800;line-height:1.15;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--ink-2)}

/* split cards */
.split{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
.split.reverse{grid-template-columns:.85fr 1.15fr}
.big-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.big-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3)}
.big-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.big-card .card-body{padding:28px}
.big-card h3{font-size:22px}
.big-card p{margin-top:12px;color:var(--ink-2);font-size:15px}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.check-list li{position:relative;padding-left:28px;font-size:15px;color:var(--ink-2)}
.check-list li::before{
  content:"";position:absolute;left:0;top:.55em;width:16px;height:16px;border-radius:50%;
  background:rgba(23,214,182,.18);
  box-shadow:inset 0 0 0 2px var(--mint);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:.85em;width:6px;height:3px;
  border-left:2px solid #0E9E86;border-bottom:2px solid #0E9E86;transform:rotate(-45deg);
}
.side-stack{display:flex;flex-direction:column;gap:24px}
.mini-card{
  flex:1;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--shadow);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3)}
.mini-icon{
  width:44px;height:44px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;
}
.mini-icon svg{width:22px;height:22px}
.mini-card h3{margin-top:16px;font-size:18px}
.mini-card p{margin-top:10px;color:var(--ink-2);font-size:14.5px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:30px 24px;box-shadow:var(--shadow);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3)}
.step-no{
  width:44px;height:44px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;font-weight:800;font-variant-numeric:tabular-nums;
  box-shadow:0 12px 24px -14px rgba(108,76,241,.9);
}
.step h3{margin-top:18px;font-size:17px}
.step p{margin-top:10px;font-size:14.5px;color:var(--ink-2)}

/* faq */
.faq{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:rgba(108,76,241,.3)}
.faq-item.is-open{box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.35)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 26px;min-height:64px;text-align:left;
  font-size:18px;font-weight:600;color:var(--ink);
}
.faq-icon{
  position:relative;flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  background:var(--brand-soft);
  transition:transform .28s var(--ease),background .28s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-deep);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:rgba(23,214,182,.2)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a p{padding:0 26px 24px;font-size:15px;color:var(--ink-2);line-height:1.9}

/* cta band */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  background:var(--grad-dark);
  color:#fff;padding:56px 48px;
  display:grid;grid-template-columns:1.4fr .6fr;gap:32px;align-items:center;
  box-shadow:0 30px 60px -34px rgba(23,20,43,.7);
}
.cta-band::before{
  content:"";position:absolute;width:300px;height:300px;border-radius:50%;
  right:-80px;top:-110px;background:rgba(108,76,241,.55);filter:blur(70px);
}
.cta-band h2{position:relative;font-size:clamp(24px,3.2vw,34px)}
.cta-band p{position:relative;margin-top:14px;color:rgba(255,255,255,.8);font-size:15.5px}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* footer */
.site-footer{
  margin-top:var(--sec);
  background:var(--grad-dark);
  color:rgba(255,255,255,.78);
  padding:72px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .logo{color:#fff}
.footer-brand .logo:hover{color:#fff}
.footer-brand .logo-text{color:#fff}
.footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px}
.footer-col h3{font-size:16px;color:#fff;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col span{font-size:14.5px;color:rgba(255,255,255,.7)}
.footer-col a:hover{color:var(--mint)}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:24px;padding-bottom:28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.6);
}
.footer-bottom .tip{color:rgba(255,255,255,.45)}

/* misc */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2);margin-bottom:18px}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb span.sep{opacity:.55}

@media (max-width:1280px){
  .hero-grid{gap:40px}
}
@media (max-width:1024px){
  :root{--sec:72px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{max-width:560px}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .split,.split.reverse{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:44px 34px}
  .cta-actions{justify-content:flex-start}
  .main-nav{display:none}
  .hamburger{display:inline-flex}
  .nav-actions .btn-sm{display:none}
}
@media (max-width:768px){
  :root{--sec:56px}
  .container{padding:0 20px}
  .rank-item{grid-template-columns:1fr;gap:18px}
  .rank-media img{aspect-ratio:16/9}
  .hero{padding:calc(var(--nav-h) + 40px) 0 52px}
  .float-badge{position:static;display:inline-block;margin:12px 12px 0 0}
  .hero-visual{padding-bottom:4px}
  .fb-1,.fb-2,.fb-3{left:auto;right:auto;top:auto;bottom:auto}
  .steps{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:1fr;padding:28px 22px}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding-top:56px}
  .faq-q{font-size:16.5px;padding:0 20px}
  .faq-a p{padding:0 20px 20px}
}
@media (max-width:520px){
  .hero h1{font-size:30px}
  .hero-actions .btn{width:100%}
  .hero-badges .data-pill{width:100%;justify-content:space-between}
  .rank-item{padding:16px}
  .cta-band{padding:34px 22px}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --brand:#6C4CF1;
  --brand-deep:#5A3BE0;
  --brand-soft:#EDE8FF;
  --mint:#17D6B6;
  --peach:#FF8A5B;
  --ink:#17142B;
  --ink-2:#5B5675;
  --line:#E7E3F5;
  --bg:#F7F5FC;
  --white:#ffffff;
  --grad:linear-gradient(120deg,#6C4CF1 0%,#17D6B6 100%);
  --grad-dark:linear-gradient(135deg,#16122E 0%,#2A1E5C 100%);
  --radius-sm:14px;
  --radius:20px;
  --radius-lg:28px;
  --radius-pill:999px;
  --shadow:0 2px 8px rgba(23,20,43,.05);
  --shadow-hover:0 18px 44px -18px rgba(108,76,241,.28);
  --shadow-nav:0 6px 24px -12px rgba(23,20,43,.18);
  --space:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:clamp(30px,5vw,52px);font-weight:800;line-height:1.2;letter-spacing:-.5px;}
h2{font-size:clamp(24px,3.2vw,36px);font-weight:800;line-height:1.28;letter-spacing:-.3px;}
h3{font-size:20px;font-weight:700;line-height:1.45;}
p{color:var(--ink-2);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 4px rgba(108,76,241,.25);border-radius:8px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:700;line-height:1;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px -12px rgba(108,76,241,.7);}
.btn-primary:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.btn-ghost{background:rgba(255,255,255,.7);color:var(--brand-deep);border:1px solid rgba(108,76,241,.35);}
.btn-ghost:hover{transform:translateY(-4px);border-color:var(--brand);background:#fff;box-shadow:var(--shadow-hover);}
.btn-light{background:#fff;color:var(--brand-deep);}
.btn-light:hover{transform:translateY(-4px);box-shadow:0 18px 44px -18px rgba(255,255,255,.6);}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5);}
.btn-outline-light:hover{border-color:var(--mint);color:var(--mint);transform:translateY(-4px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn:disabled,.btn.is-disabled{opacity:.5;pointer-events:none;}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(108,76,241,.12);
  box-shadow:0 2px 18px -12px rgba(23,20,43,.25);
  transition:background-color .25s var(--ease),height .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header .header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .25s var(--ease);}
.site-header.is-stuck{background:rgba(255,255,255,.94);box-shadow:var(--shadow-nav);}
.site-header.is-stuck .header-inner{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.2px;color:var(--ink);}
.logo-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;box-shadow:0 8px 18px -10px rgba(108,76,241,.8);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;
  padding:0 14px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;color:var(--ink-2);
}
.nav-link:hover{color:var(--brand);background:rgba(108,76,241,.08);}
.nav-link.is-active{color:var(--brand-deep);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--grad);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-2);background:rgba(255,255,255,.7);border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(108,76,241,.4);transform:translateY(-2px);}
.icon-btn svg{width:18px;height:18px;}
.hamburger{width:42px;height:42px;border-radius:12px;display:none;align-items:center;justify-content:center;border:1px solid var(--line);background:rgba(255,255,255,.8);}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative;transition:background .2s var(--ease);}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s var(--ease);}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}
.hamburger[aria-expanded="true"] span{background:transparent;}
.hamburger[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.hamburger[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:90;
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-left:1px solid var(--line);
  box-shadow:-20px 0 50px -30px rgba(23,20,43,.5);
  transform:translateX(105%);transition:transform .3s var(--ease);
  padding:88px 24px 32px;display:flex;flex-direction:column;gap:10px;
}
.drawer.is-open{transform:translateX(0);}
.drawer .nav-link{height:48px;padding:0 16px;border-radius:14px;font-size:16px;}
.drawer .nav-link.is-active{background:var(--brand-soft);}
.drawer .nav-link.is-active::after{display:none;}
.drawer-mask{position:fixed;inset:0;background:rgba(23,20,43,.35);z-index:85;opacity:0;pointer-events:none;transition:opacity .3s var(--ease);}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:132px 0 64px;
  background:
    radial-gradient(900px 420px at 12% 0%,rgba(108,76,241,.20),transparent 62%),
    radial-gradient(700px 380px at 88% 12%,rgba(23,214,182,.14),transparent 60%),
    linear-gradient(180deg,#F7F5FC 0%,#FFFFFF 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(108,76,241,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(108,76,241,.04) 1px,transparent 1px);
  background-size:52px 52px;
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.35),transparent 70%);
  filter:blur(70px);top:60px;right:-60px;pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid rgba(108,76,241,.25);
  color:var(--brand-deep);font-size:13px;font-weight:700;letter-spacing:.4px;
  box-shadow:var(--shadow);
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--mint);display:inline-block;}
.hero h1{margin:20px 0 16px;}
.hero-sub{font-size:17px;max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.8);border:1px solid var(--line);
  font-size:13.5px;font-weight:600;color:var(--ink-2);
}
.pill svg{width:14px;height:14px;color:var(--mint);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;border-radius:var(--radius-lg);
  border:6px solid #fff;box-shadow:0 30px 60px -30px rgba(23,20,43,.45);
  aspect-ratio:4/3;object-fit:cover;
}
.float-badge{
  position:absolute;display:flex;flex-direction:column;gap:2px;
  padding:10px 16px;border-radius:18px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border:1.5px solid rgba(23,214,182,.55);
  box-shadow:0 14px 30px -18px rgba(23,20,43,.5);
}
.float-badge b{font-size:20px;font-weight:800;color:var(--brand-deep);font-variant-numeric:tabular-nums;line-height:1.2;}
.float-badge i{font-style:normal;font-size:11.5px;color:var(--ink-2);letter-spacing:.2px;}
.float-badge.b1{top:6%;left:-22px;}
.float-badge.b2{bottom:24%;right:-18px;}
.float-badge.b3{bottom:-8px;left:12%;}

/* ---------- Sections ---------- */
.section{padding:var(--space) 0;}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{position:relative;padding-left:18px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:4px;background:var(--grad);
}
.section-head p{margin-top:14px;font-size:16.5px;}
.section-alt{background:#fff;}

/* ---------- Filter tabs ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 32px;}
.filter-btn{
  padding:10px 20px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--line);
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:all .2s var(--ease);
}
.filter-btn:hover{color:var(--brand);border-color:rgba(108,76,241,.4);transform:translateY(-2px);}
.filter-btn.is-active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 12px 26px -14px rgba(108,76,241,.8);}

/* ---------- Staggered two column cards ---------- */
.stagger-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
.stagger-grid > .gift-card:nth-child(even){transform:translateY(36px);}
.gift-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  display:flex;flex-direction:column;
}
.gift-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3);}
.stagger-grid > .gift-card:nth-child(even):hover{transform:translateY(32px);}
.gift-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.gift-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.gift-card:hover .gift-thumb img{transform:scale(1.05);}
.gift-tag{
  position:absolute;top:14px;left:14px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.9);color:var(--brand-deep);
  font-size:12.5px;font-weight:700;letter-spacing:.2px;
}
.gift-tag.hot{background:var(--peach);color:#fff;}
.gift-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.gift-body h3{font-size:20px;}
.gift-body p{font-size:15px;}
.gift-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:2px;}
.stat-chip{
  display:inline-flex;align-items:baseline;gap:6px;
  padding:6px 13px;border-radius:var(--radius-pill);
  background:var(--brand-soft);border:1px solid rgba(108,76,241,.22);
  font-size:12.5px;color:var(--brand-deep);font-weight:700;
}
.stat-chip b{font-size:15px;font-variant-numeric:tabular-nums;}
.stat-chip i{font-style:normal;font-weight:600;color:var(--ink-2);}
.gift-foot{margin-top:auto;padding-top:16px;border-top:1px dashed var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;}
.gift-foot span{font-size:13.5px;color:var(--ink-2);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--brand);font-size:14.5px;}
.link-arrow svg{width:15px;height:15px;transition:transform .2s var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--shadow);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3);}
.step-no{
  width:44px;height:44px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;font-weight:800;font-size:17px;
  font-variant-numeric:tabular-nums;box-shadow:0 10px 22px -12px rgba(108,76,241,.8);
}
.step h3{margin:16px 0 8px;font-size:18px;}
.step p{font-size:14.8px;}

/* ---------- Scene cards (2x2) ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.scene{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.scene:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,76,241,.3);}
.scene-ico{
  flex:0 0 44px;width:44px;height:44px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);
}
.scene-ico svg{width:20px;height:20px;}
.scene h3{font-size:17.5px;margin-bottom:6px;}
.scene p{font-size:14.8px;}

/* ---------- Dark stats band ---------- */
.band{
  background:var(--grad-dark);color:#fff;border-radius:var(--radius-lg);
  padding:56px 48px;position:relative;overflow:hidden;
}
.band::after{
  content:"";position:absolute;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,214,182,.35),transparent 70%);
  filter:blur(60px);right:-80px;bottom:-120px;
}
.band h2{color:#fff;position:relative;z-index:2;}
.band > p{color:rgba(255,255,255,.74);max-width:660px;margin-top:14px;position:relative;z-index:2;}
.band-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:38px;position:relative;z-index:2;}
.band-stat{
  padding:22px;border-radius:var(--radius);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
}
.band-stat b{display:block;font-size:34px;font-weight:800;font-variant-numeric:tabular-nums;color:#fff;letter-spacing:-.5px;}
.band-stat span{display:block;margin-top:6px;font-size:14px;color:rgba(255,255,255,.7);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
.faq-item.is-open{border-color:rgba(108,76,241,.35);box-shadow:var(--shadow-hover);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:14px 22px;text-align:left;
  font-size:18px;font-weight:600;color:var(--ink);
}
.faq-icon{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-deep);
  transition:transform .25s var(--ease),background .25s var(--ease),color .25s var(--ease);
}
.faq-icon svg{width:14px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--grad);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a p{padding:0 22px 22px;font-size:15px;line-height:1.9;}

/* ---------- CTA ---------- */
.cta-band{
  border-radius:var(--radius-lg);
  background:linear-gradient(120deg,rgba(108,76,241,.10),rgba(23,214,182,.14));
  border:1px solid rgba(108,76,241,.22);
  padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{max-width:620px;}
.cta-band p{margin-top:12px;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- Footer ---------- */
.site-footer{background:var(--grad-dark);color:rgba(255,255,255,.78);margin-top:var(--space);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo-mark{background:var(--grad);}
.footer-brand p{color:rgba(255,255,255,.68);font-size:14.5px;max-width:360px;}
.footer-col h3{color:#fff;font-size:16px;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{font-size:14.5px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--mint);}
.footer-bottom{
  margin-top:48px;padding:22px 24px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.6);
}
.footer-bottom .tip{color:rgba(255,255,255,.45);}

/* ---------- Skeleton / empty ---------- */
.skeleton{
  border-radius:var(--radius);height:160px;
  background:linear-gradient(90deg,#EFECF9 0%,#E2DCF7 50%,#EFECF9 100%);
  background-size:200% 100%;animation:breathe 1.4s ease-in-out infinite;
}
@keyframes breathe{0%{background-position:200% 0;}100%{background-position:-200% 0;}}

/* ---------- Responsive ---------- */
@media (max-width:1280px){
  .float-badge.b1{left:-8px;}
  .float-badge.b2{right:-6px;}
}
@media (max-width:1024px){
  :root{--space:72px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{max-width:620px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .band-stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .main-nav{display:none;}
  .hamburger{display:inline-flex;}
  .header-actions .btn-primary{display:none;}
  .stagger-grid > .gift-card:nth-child(even){transform:none;}
  .stagger-grid > .gift-card:nth-child(even):hover{transform:translateY(-4px);}
}
@media (max-width:768px){
  :root{--space:56px;}
  .hero{padding:112px 0 48px;}
  .stagger-grid,.scene-grid{grid-template-columns:1fr;}
  .band{padding:40px 24px;}
  .band-stats{grid-template-columns:1fr;}
  .cta-band{padding:36px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .faq-q{font-size:16.5px;padding:14px 18px;}
  .faq-a p{padding:0 18px 18px;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .hero-cta .btn{width:100%;}
  .float-badge.b2{right:0;}
  .float-badge.b3{left:0;}
  .steps{grid-template-columns:1fr;}
  .btn{padding:13px 22px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}