:root{
  --bg:#0b1220;
  --bg-2:#0f172a;
  --bg-3:#111c2f;
  --panel:#0f1a2e;
  --panel-2:#15233c;
  --line:#1f2c46;
  --text:#e6edf6;
  --text-2:#aab4c4;
  --muted:#7b889a;
  --brand:#5b8def;
  --brand-2:#7aa6ff;
  --accent:#27d3a3;
  --warn:#f5b042;
  --radius:14px;
  --radius-lg:20px;
  --shadow:0 14px 40px rgba(0,0,0,.35);
  --maxw:1120px;
  --gap:20px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  background:linear-gradient(180deg,#0b1220 0%,#0a1322 100%);
  color:var(--text);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,video{max-width:100%;display:block}
a{color:var(--brand-2);text-decoration:none}
a:hover{color:#a8c4ff}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

.topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(11,18,32,.78);
  backdrop-filter:saturate(140%) blur(10px);
  -webkit-backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.row{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:700}
.brand:hover{color:#fff}
.brand-mark{display:inline-block;width:58px;height:58px;border-radius:50%;object-fit:cover;background:transparent;color:transparent;font-size:0;box-shadow:0 7px 24px rgba(91,141,239,.28)}
.brand-text{letter-spacing:.5px}
.nav{display:flex;gap:22px;flex:1;justify-content:center}
.nav a{color:var(--text-2);font-size:14px}
.nav a:hover{color:#fff}

.section{padding:72px 0;position:relative}
.section-dark{background:linear-gradient(180deg,#0a1426 0%,#0b1220 100%);border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05)}
.section-alt{background:rgba(255,255,255,.02)}
.eyebrow{display:inline-block;color:var(--accent);font-size:13px;letter-spacing:2px;text-transform:uppercase;margin:0 0 10px;font-weight:600}
h1{font-size:34px;line-height:1.35;margin:0 0 18px;font-weight:800;letter-spacing:.5px}
h2{font-size:32px;line-height:1.25;margin:0 0 14px;font-weight:800;letter-spacing:.5px}
h3{font-size:18px;line-height:1.4;margin:0 0 8px;font-weight:700}
h4{font-size:16px;margin:0 0 6px;font-weight:700}
.lede{font-size:18px;color:var(--text-2);margin:0 0 22px}
p{margin:0 0 12px;color:var(--text-2)}
ul,ol{margin:0 0 14px;padding-left:22px;color:var(--text-2)}
ul li,ol li{margin-bottom:6px}
strong{color:#fff;font-weight:700}

.cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 18px;border-radius:12px;font-weight:700;font-size:15px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .15s ease, background .2s ease, border-color .2s ease, color .2s ease;
  white-space:nowrap;
}
.cta:hover{transform:translateY(-1px)}
.cta-primary{background:linear-gradient(135deg,#5b8def,#27d3a3);color:#0b1220;box-shadow:0 10px 24px rgba(91,141,239,.35)}
.cta-secondary{background:transparent;border-color:rgba(255,255,255,.18);color:#fff}
.cta-ghost{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.12);color:#fff}
.cta-lg{padding:16px 24px;font-size:17px;border-radius:14px}

.hero{padding:56px 0 64px}
.hero-bullets{list-style:none;padding:0;margin:18px 0 0;display:flex;flex-wrap:wrap;gap:10px}
.hero-bullets li{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);
  padding:8px 12px;border-radius:999px;color:var(--text-2);font-size:14px
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}

.ratio-16x9{position:relative;width:100%;aspect-ratio:16/9;background:#0a1426;border-radius:var(--radius-lg);overflow:hidden;border:1px dashed rgba(255,255,255,.16)}
.ratio-16x9 .img-placeholder{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:#6e7e96;font-size:15px;letter-spacing:.5px;background:
    linear-gradient(135deg,rgba(91,141,239,.06),rgba(39,211,163,.04)),
    repeating-linear-gradient(45deg,rgba(255,255,255,.015) 0 12px,transparent 12px 24px);
}
.hero-figure figcaption{color:var(--muted);font-size:12px;margin-top:8px;text-align:center}

.video-frame{
  position:relative;background:#000;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,.08);box-shadow:var(--shadow)
}
.video-frame video{width:100%;height:100%;display:block}
.video-play{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:linear-gradient(180deg,rgba(11,18,32,.4),rgba(11,18,32,.7));
  color:#fff;border:0;cursor:pointer;z-index:2;
  transition:background .2s ease;
}
.video-play:hover{background:linear-gradient(180deg,rgba(11,18,32,.3),rgba(11,18,32,.6))}
.play-icon{
  width:84px;height:84px;border-radius:50%;
  background:linear-gradient(135deg,#5b8def,#27d3a3);
  display:flex;align-items:center;justify-content:center;font-size:32px;color:#0b1220;
  box-shadow:0 12px 30px rgba(91,141,239,.45);margin-bottom:14px;
  transition:transform .2s ease;
}
.video-play:hover .play-icon{transform:scale(1.06)}
.play-text{font-size:15px;letter-spacing:1px;color:#e6edf6}
.video-frame iframe,.video-frame .video-embed{position:absolute;inset:0;width:100%;height:100%;border:0}

.sec-head{max-width:760px;margin:0 auto 28px;text-align:center}
.sec-head h2{margin-bottom:8px}
.sec-head p{color:var(--text-2);font-size:15.5px}
.sec-foot{color:var(--muted);font-size:14px;margin-top:18px;text-align:center}

.mini-card{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);padding:16px 18px;
}
.mini-card h4{color:#fff;margin-bottom:6px;font-size:15px}
.mini-card p{margin:0;color:var(--text-2);font-size:14px;line-height:1.6}

.card{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:22px 24px;margin-top:18px;
}
.card h3{color:#fff;margin-bottom:10px}
.card-list ul{margin:0;padding-left:20px}

.role-card{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:22px;
}
.role-tag{
  display:inline-block;font-size:12px;letter-spacing:1px;
  color:#0b1220;background:linear-gradient(135deg,#5b8def,#27d3a3);
  padding:4px 10px;border-radius:999px;margin-bottom:10px;font-weight:700;
}

.cat-card{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 20px;
}
.cat-card h3{color:#fff}
.cat-card p{color:var(--text-2);font-size:14.5px;margin:0 0 6px}
.cat-card small{color:var(--muted);font-size:12.5px;line-height:1.6;display:block}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:6px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:6px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:6px}

.steps{list-style:none;padding:0;margin:8px 0 0;counter-reset:step;display:grid;gap:14px}
.steps li{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 20px;
}
.steps li h3{color:#fff;margin-bottom:6px}
.steps li p{margin:0;color:var(--text-2);font-size:14.5px}
.steps-7{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.steps-7 li{display:flex;flex-direction:column;gap:4px}
.steps-7 li strong{color:#fff}
.steps-7 li span{color:var(--text-2);font-size:14.5px;font-weight:400}

.section-dark .layer-card{background:var(--panel-2);border:1px solid var(--line)}
.layer-tag{
  display:inline-block;font-size:12px;letter-spacing:1px;color:var(--accent);
  border:1px solid rgba(39,211,163,.4);padding:3px 8px;border-radius:6px;margin-bottom:10px;font-weight:700
}

.table-wrap{overflow-x:auto;margin-top:18px}
.compare{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.compare th,.compare td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px}
.compare th{background:rgba(255,255,255,.03);color:#fff;font-weight:700}
.compare tr:last-child td{border-bottom:0}

.callout{
  background:rgba(91,141,239,.07);border:1px solid rgba(91,141,239,.28);
  border-radius:var(--radius);padding:16px 20px;color:var(--text);
  font-size:15px;line-height:1.75;margin-top:18px
}

.price-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}
.price-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px}
.price-label{color:var(--text-2);margin:0 0 6px;font-size:13px;letter-spacing:1px;text-transform:uppercase}
.price-num{font-size:34px;font-weight:800;margin:0 0 6px;color:#fff}
.price-num span{font-size:14px;color:var(--text-2);font-weight:600;margin-left:4px}
.price-sub{color:var(--text-2);margin:0;font-size:14.5px}

.qa{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px;margin-bottom:10px}
.qa summary{cursor:pointer;font-weight:700;color:#fff;list-style:none;position:relative;padding-right:24px}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";position:absolute;right:0;top:0;color:var(--text-2);font-weight:600;font-size:20px;line-height:1}
.qa[open] summary::after{content:"−"}
.qa p{margin:10px 0 0;color:var(--text-2);font-size:14.5px}

.sub-h{font-size:22px;margin:34px 0 14px;color:#fff}

.section-cta{padding:80px 0;background:linear-gradient(135deg,rgba(91,141,239,.12),rgba(39,211,163,.08));border-top:1px solid rgba(255,255,255,.05)}
.cta-row{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-row h2{font-size:30px}
.cta-row p{color:var(--text-2);margin-top:8px}

.footer{padding:24px 0;border-top:1px solid rgba(255,255,255,.06);background:#08101e}
.footer-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between}
.footer-brand{color:var(--text-2);margin:0;font-size:13.5px}
.footer-icp{margin:0;color:var(--muted);font-size:12.5px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.footer-icp a{color:var(--muted)}
.footer-icp a:hover{color:#aab4c4}
.police-icon{width:14px;height:14px;display:inline-block;vertical-align:-2px;margin-right:4px}
.footer-icp .dot{opacity:.5}

@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .grid-3{grid-template-columns:1fr 1fr}
  .grid-4{grid-template-columns:1fr 1fr}
  .price-row{grid-template-columns:1fr}
  .steps-7{grid-template-columns:1fr}
  .sec-why-grid{grid-template-columns:1fr;gap:22px}
  .sec-why-cards{grid-template-columns:1fr 1fr}
  h1{font-size:26px}
  h2{font-size:26px}
  .nav{display:none}
}
@media (max-width: 560px){
  .section{padding:52px 0}
  .hero{padding:36px 0 44px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .container{padding:0 18px}
  .row{height:58px}
  .brand-text{display:none}
  .cta-row{flex-direction:column;align-items:flex-start}
  .cta-row .cta-lg{width:100%;justify-content:center}
  .sec-why-cards{grid-template-columns:1fr}
}

/* APP 下载入口 & 底部 CTA 按钮组 */
.cta-actions{display:inline-flex;gap:12px;flex-wrap:wrap;align-items:center}
.cta-extra{color:var(--muted);font-size:13.5px;margin:6px 0 0}

@media (max-width: 560px){
  .cta-actions{flex-direction:column;align-items:stretch;width:100%}
  .cta-actions .cta-lg{width:100%;justify-content:center}
}

/* === Hero: 左右 1:1 分栏，图容器 3:2 === */
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.hero-figure{margin:0;width:100%;display:block;line-height:0;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.06);background:transparent}
.hero-main-img{display:block;width:100%;height:auto;max-width:100%;border-radius:var(--radius-lg)}

/* === 产品定位: 文字横贯整版 === */
.sec-copy-full{max-width:880px;margin:0 auto}
.section .sec-copy-full h2{margin-bottom:18px}

/* === sec-why: 图左上 + 文字右 + 卡片下方 (包围式布局) === */
.sec-why-wrap > * + *{margin-top:0}
.sec-why-grid{display:grid;grid-template-columns:2fr 1fr;gap:32px;align-items:start}
.sec-why-grid .sec-figure{margin:0;width:100%}
.sec-why-grid .sec-why-intro{padding-top:8px}
.sec-why-grid .sec-why-intro h2{margin-bottom:14px}
.sec-why-cards{margin-top:28px;gap:18px}
.sec-why-wrap .callout{margin-top:26px}

/* === 产品声明 (替换原年度检查) === */
\.statement-list{max-width:880px;margin:0 auto;display:grid;gap:14px}
\.statement-item{background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:var(--radius);padding:16px 20px}
\.statement-item h4{color:#fff;margin-bottom:6px;font-size:15.5px}
\.statement-item p{margin:0;color:var(--text-2);font-size:14.5px;line-height:1.7}
@media (max-width:560px){\.statement-item{padding:14px 16px}\.statement-item h4{font-size:15px}\.statement-item p{font-size:14px}}


/* === sec-buy: 图 2/3 + 内容 1/3 左右布局 === */
\.sec-buy-grid{display:grid;grid-template-columns:2fr 1fr;gap:32px;align-items:start;margin-top:6px}
\.sec-buy-grid .sec-figure{margin:0;width:100%}
\.sec-buy-grid .sec-buy-content{padding-top:6px}
\.sec-buy-grid .price-row{margin-top:0}
\.sec-buy-grid .callout{margin-top:18px;font-size:14.5px}
@media (max-width:980px){\.sec-buy-grid{grid-template-columns:1fr;gap:22px}}

/* === 流程列表共用样式 === */
\.steps-flow,\.steps-safety{margin-top:24px}





/* === App 下载就地下拉（fixed 定位，JS 计算位置；QR 1/4 大小）=== */
.app-download{position:relative;display:inline-block}
.app-download .cta{pointer-events:auto}
.app-download .cta[aria-expanded=true]{background:rgba(91,141,239,.18);border-color:rgba(91,141,239,.4);color:#fff}
.app-dropdown{position:fixed;z-index:90;width:200px;background:linear-gradient(180deg,#15233c 0%,#0f1a2e 100%);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-lg);padding:14px 12px 10px;box-shadow:0 16px 40px rgba(0,0,0,.5);text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px}
.app-dropdown[hidden]{display:none!important}
.app-dropdown::before{content:"";position:absolute;top:-6px;right:24px;width:12px;height:12px;background:#15233c;border-left:1px solid rgba(255,255,255,.14);border-top:1px solid rgba(255,255,255,.14);transform:rotate(45deg)}
.app-dropdown-qr{width:104px;height:104px;background:#fff;padding:4px;border-radius:8px;object-fit:contain;display:block}
.app-dropdown-text{font-size:12px;color:var(--text-2);margin:0;line-height:1.5}
.app-dropdown-hint{font-size:11.5px;color:var(--muted);margin:-2px 0 0;line-height:1.4;letter-spacing:.3px}
.app-dropdown-link{display:inline-flex;align-items:center;gap:4px;padding:8px 14px;background:linear-gradient(135deg,#5b8def,#27d3a3);color:#0b1220!important;font-weight:700;font-size:13px;border-radius:8px;text-decoration:none;box-shadow:0 6px 16px rgba(91,141,239,.32);transition:transform .15s ease;white-space:nowrap}
.app-dropdown-link:hover{transform:translateY(-1px);color:#0b1220!important}
@media (max-width:560px){.app-dropdown{width:190px}.app-dropdown-qr{width:96px;height:96px}}