:root{
  --p1:#6647ee;
  --p2:#9224dc;
  --p3:#b050ff;
  --ink:#040039;
  --ink2:#3d456d;
  --muted:#8a9fba;
  --soft:#f1f2f8;
  --line:#e6e4f2;
  --grad:linear-gradient(90deg,#6647ee,#9224dc);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Nunito','Poppins',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
  color:var(--ink2);line-height:1.7;background:#fff;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 34px;border-radius:40px;
  font-size:15px;font-weight:700;cursor:pointer;border:0;transition:transform .2s,box-shadow .2s;white-space:nowrap}
.btn-primary{color:#fff;background:linear-gradient(90deg,#6647ee,#9224dc);box-shadow:0 10px 24px rgba(102,71,238,.32)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(102,71,238,.42)}
.btn-ghost{color:var(--p1);background:#fff;border:1.5px solid #ddd9f5}
.btn-ghost:hover{border-color:var(--p1);transform:translateY(-3px)}
.btn-light{background:#fff;color:var(--p1);box-shadow:0 12px 26px rgba(0,0,0,.16)}

/* ===== 顶栏 ===== */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav__in{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.logo{display:flex;align-items:center;gap:9px;font-size:20px;font-weight:800;color:var(--ink);flex-shrink:0}
.logo i{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,#6647ee,#9224dc);display:grid;place-items:center;
  color:#fff;font-style:normal;font-weight:800;font-size:17px}
.nav__links{display:flex;gap:28px;margin-left:auto}
.nav__links a{font-size:15px;font-weight:600;color:var(--ink2);transition:color .2s}
.nav__links a:hover{color:var(--p1)}
.nav__cta{display:flex;gap:10px;flex-shrink:0}
.nav__cta .btn{padding:10px 22px;font-size:14px}
.burger{display:none;width:40px;height:40px;align-items:center;justify-content:center;border:1px solid var(--line);
  border-radius:9px;background:#fff;cursor:pointer;color:var(--ink)}
.mobile{display:none;border-top:1px solid var(--line);background:#fff}
.mobile.open{display:block}
.mobile a{display:block;padding:14px 22px;font-size:15px;font-weight:600;border-bottom:1px solid var(--line)}

/* ===== 首屏 ===== */
.hero{padding:74px 0 66px;background:
  radial-gradient(900px 420px at 88% 0%,rgba(176,80,255,.13),transparent 62%),
  radial-gradient(760px 380px at 3% 22%,rgba(102,71,238,.11),transparent 62%),#fff}
.hero__in{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:40px;background:#f0ecff;
  color:var(--p1);font-size:13px;font-weight:700}
h1{font-size:clamp(2rem,3.6vw,2.9rem);line-height:1.25;font-weight:800;color:var(--ink);margin:18px 0 0}
.lead{margin-top:18px;font-size:17px;color:var(--muted);max-width:560px}
.hero__btns{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}

/* 界面模拟窗 */
.mock{background:#fff;border:1px solid #e9e6f7;border-radius:16px;overflow:hidden;
  box-shadow:0 26px 60px rgba(102,71,238,.16),0 4px 12px rgba(4,0,57,.05)}
.mock__bar{height:36px;background:#faf9fe;border-bottom:1px solid #eeebfa;display:flex;align-items:center;gap:6px;padding:0 14px}
.mock__bar i{width:9px;height:9px;border-radius:50%;background:#e4dff5;display:block}
.mock__bar i:nth-child(1){background:#f3b0b0}.mock__bar i:nth-child(2){background:#f6d79a}.mock__bar i:nth-child(3){background:#b6e0b0}
.mock__url{margin-left:10px;height:16px;flex:1;max-width:220px;border-radius:8px;background:#f1eefb}
.mock__body{padding:18px}
.mock__title{font-size:13px;font-weight:800;color:#2b1a6b;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.mock__title span{width:8px;height:8px;border-radius:2px;background:var(--p1)}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}
.stat-box{border:1px solid #f0edfb;border-radius:10px;padding:10px 11px;background:#fdfcff}
.stat-box em{display:block;font-style:normal;font-size:10.5px;color:#9089b8;margin-bottom:4px}
.stat-box b{font-size:16px;color:#2b1a6b;letter-spacing:-.3px}
.chart{width:100%;height:auto;display:block}
.mock-list{margin-top:14px;display:flex;flex-direction:column;gap:9px}
.mock-list .row{display:flex;align-items:center;gap:10px}
.mock-list .bar{height:8px;border-radius:6px;background:#f1eefb;flex:1}
.mock-list .bar b{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,#b050ff,#6647ee)}
.mock-list .val{font-size:11px;color:#9089b8;font-variant-numeric:tabular-nums}

/* ===== 数据条 ===== */
.stats{background:linear-gradient(90deg,#6647ee,#9224dc);color:#fff}
.stats__in{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:34px 0;text-align:center}
.stats b{display:block;font-size:30px;font-weight:800;letter-spacing:-.5px}
.stats span{font-size:14px;opacity:.9}

/* ===== 通用区块 ===== */
section{padding:76px 0}
.eyebrow{color:var(--p1);font-size:13.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
h2{font-size:clamp(1.6rem,2.6vw,2.2rem);font-weight:800;color:var(--ink);margin:12px 0 14px;line-height:1.3}
.sub{color:var(--muted);font-size:16px;max-width:760px}
.center{text-align:center}
.center .sub{margin-left:auto;margin-right:auto}
.soft{background:var(--soft)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}

/* ===== 卡片 ===== */
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px 26px;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(102,71,238,.13)}
.card .ic{width:54px;height:54px;border-radius:14px;background:linear-gradient(135deg,#efeaff,#e6dbff);
  display:grid;place-items:center;color:var(--p1);margin-bottom:18px}
.card h3{font-size:18px;font-weight:800;color:var(--ink);margin-bottom:10px}
.card p{font-size:14.5px;color:var(--muted)}

/* ===== 优势 ===== */
.adv{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.adv .item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px}
.adv .item .dot{width:40px;height:40px;border-radius:11px;background:linear-gradient(135deg,#6647ee,#9224dc);
  color:#fff;display:grid;place-items:center;margin-bottom:16px}
.adv h3{font-size:17px;font-weight:800;color:var(--ink);margin-bottom:9px}
.adv p{font-size:14.5px;color:var(--muted)}

/* ===== CTA ===== */
.cta{background:linear-gradient(120deg,#6647ee,#9224dc);border-radius:26px;padding:54px 34px;text-align:center;color:#fff}
.cta h2{color:#fff;margin-bottom:12px}
.cta p{opacity:.93;margin-bottom:26px;font-size:16px}

/* ===== 步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:44px}
.step{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 22px;position:relative}
.step .no{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,#6647ee,#9224dc);color:#fff;
  display:grid;place-items:center;font-weight:800;margin-bottom:16px}
.step h3{font-size:16.5px;font-weight:800;color:var(--ink);margin-bottom:8px}
.step p{font-size:14px;color:var(--muted)}

/* ===== 标签页 ===== */
.tabs{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:32px}
.tab{padding:11px 26px;border-radius:40px;background:#fff;border:1.5px solid var(--line);font-weight:700;
  font-size:14.5px;color:var(--ink2);cursor:pointer;transition:.2s;font-family:inherit}
.tab:hover{border-color:#c9c0f0}
.tab.active{background:linear-gradient(90deg,#6647ee,#9224dc);color:#fff;border-color:transparent}
.panel{display:none;margin-top:30px}
.panel.active{display:block}
.panel ul{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.panel li{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;font-size:15px;color:var(--ink2)}
.panel li b{color:var(--ink);display:block;margin-bottom:6px;font-size:15.5px}

/* ===== 价格 ===== */
.price-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;max-width:780px;margin:32px auto 0}
.price{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px 28px}
.price.featured{border-color:var(--p1);box-shadow:0 20px 46px rgba(102,71,238,.16)}
.price .tag{display:inline-block;font-size:12px;font-weight:800;color:var(--p1);background:#f0ecff;padding:4px 14px;border-radius:40px}
.price .amt{font-size:38px;font-weight:800;color:var(--ink);letter-spacing:-1px;margin:14px 0 0}
.price .amt small{font-size:14px;font-weight:600;color:var(--muted);letter-spacing:0;margin-left:4px}
.price ul{margin:20px 0 24px;display:flex;flex-direction:column;gap:11px;font-size:14.5px;color:var(--ink2)}
.price li::before{content:"✓";color:var(--p1);font-weight:800;margin-right:8px}
.price .btn{width:100%}
.price-note{margin-top:24px;text-align:center;font-size:12.5px;color:var(--muted)}

/* ===== FAQ ===== */
.faq{max-width:840px;margin:36px auto 0}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 22px;margin-bottom:12px;transition:box-shadow .2s}
.faq details[open]{box-shadow:0 14px 34px rgba(102,71,238,.1)}
.faq summary{list-style:none;cursor:pointer;padding:20px 0;font-weight:700;color:var(--ink);font-size:16px;
  display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--p1);font-weight:800;font-size:20px;flex:none}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 0 20px;color:var(--muted);font-size:15px}

/* ===== 页脚 ===== */
footer{background:#0b0723;color:#b9b4d6;padding:60px 0 30px}
.foot{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
footer h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:14px}
footer ul li{margin-bottom:9px;font-size:14.5px}
footer ul a{transition:color .2s}
footer ul a:hover{color:#fff}
.foot p.desc{margin-top:14px;max-width:340px;font-size:14.5px;line-height:1.7}

/* ===== 响应式 ===== */
@media (max-width:980px){
  .hero__in,.two{grid-template-columns:1fr;gap:38px}
  .cards3,.adv,.steps{grid-template-columns:1fr 1fr}
  .stats__in{grid-template-columns:1fr 1fr}
  .nav__links,.nav__cta{display:none}
  .burger{display:inline-flex}
  .foot{grid-template-columns:1fr 1fr}
  .hero{padding:44px 0 46px}
}
@media (max-width:620px){
  .cards3,.adv,.steps,.price-grid,.panel ul{grid-template-columns:1fr}
  .stats__in{grid-template-columns:1fr 1fr}
  .foot{grid-template-columns:1fr;gap:28px}
  h1{font-size:1.9rem}
  section{padding:56px 0}
  .btn{padding:13px 26px;font-size:14.5px}
}

.hero__img{width:100%;height:auto;border-radius:16px;border:1px solid #e9e6f7;display:block;
  box-shadow:0 26px 60px rgba(102,71,238,.18),0 4px 12px rgba(4,0,57,.05)}
.card.with-img{padding:16px 16px 26px}
.card__img{width:100%;height:172px;object-fit:cover;border-radius:14px;margin-bottom:18px;display:block;background:#f1f2f8}