:root{
  --bg:#070a18;
  --ink:#eaf1ff;
  --muted:#aab7d6;
  --brand:#c9a24b;      /* EX 金色主色 */
  --brand2:#e0c074;     /* EX 浅金 */
  --cyan:#36e2c7;       /* 青色高光 */
  --line:rgba(255,255,255,.10);
  --glass:rgba(18,24,45,.55);
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(1200px 600px at 15% -10%, rgba(201,162,75,.18), transparent 60%),
    radial-gradient(900px 500px at 88% 8%, rgba(54,226,199,.14), transparent 60%),
    radial-gradient(700px 500px at 50% 110%, rgba(120,90,200,.14), transparent 60%);
  background-attachment:fixed;
}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
.section-title{font-size:28px;font-weight:800;text-align:center;margin-bottom:34px;background:linear-gradient(90deg,var(--brand),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent;}
.section-title.left{text-align:left;}

/* Header */
.site-header{position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);background:rgba(7,10,24,.55);border-bottom:1px solid var(--line);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px;}
.logo{font-size:26px;font-weight:900;letter-spacing:2px;background:linear-gradient(90deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent;}
nav ul{display:flex;gap:26px;}
nav a{font-size:14px;color:var(--muted);transition:.2s;position:relative;}
nav a:hover{color:var(--ink);}
nav a.active{color:var(--ink);}
nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-7px;height:2px;background:linear-gradient(90deg,var(--brand),var(--cyan));border-radius:2px;}
.btn-login{font-size:13px;font-weight:700;padding:9px 18px;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--brand2));color:#1a1407;transition:.25s;}
.btn-login:hover{transform:translateY(-1px);box-shadow:0 8px 24px rgba(201,162,75,.35);}

/* Hero */
.hero{padding:78px 0 70px;}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.hero h1{font-size:46px;font-weight:900;line-height:1.18;margin-bottom:20px;background:linear-gradient(90deg,#fff 20%,var(--brand) 80%);-webkit-background-clip:text;background-clip:text;color:transparent;}
.lead{color:var(--muted);font-size:16px;margin-bottom:26px;}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:34px;}
.btn-primary{display:inline-block;font-size:14px;font-weight:700;padding:12px 24px;border-radius:10px;background:linear-gradient(90deg,var(--brand),var(--brand2));color:#1a1407;transition:.25s;}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(201,162,75,.4);}
.btn-ghost{display:inline-block;font-size:14px;font-weight:600;padding:12px 20px;border-radius:10px;border:1px solid var(--line);color:var(--ink);transition:.2s;}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.hero-meta{display:flex;gap:40px;flex-wrap:wrap;}
.hero-meta li{display:flex;flex-direction:column;}
.hero-meta strong{font-size:26px;font-weight:800;background:linear-gradient(90deg,var(--brand),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-meta span{font-size:12px;color:var(--muted);}

/* Hero card */
.hero-card{background:var(--glass);backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:20px;padding:24px;}
.card-title{font-weight:800;font-size:15px;margin-bottom:16px;color:var(--brand2);}
.quote-list li{display:flex;justify-content:space-between;padding:11px 4px;border-bottom:1px dashed var(--line);font-size:14px;}
.quote-list li:last-child{border-bottom:none;}
.up{color:#4cd6a8;font-weight:700;}
.down{color:#ff6b6b;font-weight:700;}
.card-note{font-size:11px;color:var(--muted);margin-top:14px;text-align:right;}

/* Features */
.features{padding:64px 0;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.feat-card{background:var(--glass);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:16px;padding:24px;transition:.3s;}
.feat-card:hover{transform:translateY(-6px);border-color:rgba(201,162,75,.45);box-shadow:0 14px 40px rgba(201,162,75,.12);}
.feat-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:15px;margin-bottom:16px;background:linear-gradient(135deg,rgba(201,162,75,.25),rgba(54,226,199,.18));color:var(--brand2);}
.feat-card h3{font-size:17px;margin-bottom:8px;}
.feat-card p{font-size:13px;color:var(--muted);}

/* Platform */
.platform{padding:64px 0;background:rgba(255,255,255,.02);}
.plat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.plat-item{background:var(--glass);border:1px solid var(--line);border-radius:16px;padding:26px;transition:.3s;}
.plat-item:hover{border-color:rgba(54,226,199,.4);}
.plat-item h3{font-size:17px;margin-bottom:10px;color:var(--ink);}
.plat-item p{font-size:13px;color:var(--muted);}

/* About */
.about{padding:70px 0;}
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.about p{color:var(--muted);margin:16px 0 22px;font-size:15px;}
.about-stats{display:flex;flex-direction:column;gap:16px;}
.about-stats li{background:var(--glass);border:1px solid var(--line);border-radius:14px;padding:18px 20px;display:flex;flex-direction:column;}
.about-stats strong{font-size:16px;color:var(--brand2);}
.about-stats span{font-size:13px;color:var(--muted);}

/* Page hero */
.page-hero{padding:68px 0 36px;text-align:center;}
.page-hero h1{font-size:40px;font-weight:900;background:linear-gradient(90deg,var(--brand),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent;}
.page-hero p{color:var(--muted);margin-top:12px;}

/* Account */
.account-section{padding:30px 0 64px;}
.account-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.account-card{background:var(--glass);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:18px;padding:28px;display:flex;flex-direction:column;position:relative;transition:.3s;}
.account-card:hover{transform:translateY(-6px);}
.account-card.featured{border-color:rgba(201,162,75,.55);box-shadow:0 0 0 1px rgba(201,162,75,.25),0 18px 50px rgba(201,162,75,.15);}
.badge{position:absolute;top:16px;right:16px;font-size:11px;font-weight:800;padding:5px 12px;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--brand2));color:#1a1407;}
.account-card h2{font-size:22px;margin-bottom:6px;}
.acc-tag{font-size:12px;color:var(--cyan);margin-bottom:16px;}
.account-card ul{margin-bottom:22px;flex:1;}
.account-card li{font-size:13px;color:var(--muted);padding:7px 0;border-bottom:1px dashed var(--line);}
.account-card li strong{color:var(--brand2);}
.account-card .btn-primary{text-align:center;}

/* Compare */
.compare{margin-top:56px;}
.acc-table{width:100%;border-collapse:collapse;background:var(--glass);border:1px solid var(--line);border-radius:16px;overflow:hidden;font-size:14px;}
.acc-table th,..acc-table td{padding:14px 16px;text-align:center;border-bottom:1px solid var(--line);}
.acc-table th{background:rgba(201,162,75,.12);color:var(--brand2);font-weight:800;}
.acc-table td:first-child{text-align:left;color:var(--muted);}
.acc-table tr:last-child td{border-bottom:none;}

/* Steps */
.open-steps{padding:64px 0;}
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.step{background:var(--glass);border:1px solid var(--line);border-radius:16px;padding:26px;text-align:center;transition:.3s;}
.step:hover{border-color:rgba(54,226,199,.4);}
.step b{display:block;font-size:30px;font-weight:900;background:linear-gradient(90deg,var(--brand),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:8px;}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:13px;color:var(--muted);}

/* Footer */
.site-footer{border-top:1px solid var(--line);background:rgba(7,10,24,.7);padding:48px 0 0;margin-top:30px;}
.footer-wrap{display:grid;grid-template-columns:1.4fr 1fr 1.4fr;gap:32px;padding-bottom:34px;}
.foot-note{color:var(--muted);font-size:13px;margin-top:8px;}
.foot-wrap h4{font-size:14px;margin-bottom:12px;color:var(--brand2);}
.foot-wrap ul li{font-size:13px;margin-bottom:8px;}
.foot-wrap ul a{color:var(--muted);transition:.2s;}
.foot-wrap ul a:hover{color:var(--brand);}
.foot-risk{font-size:12px;color:var(--muted);}
.foot-bottom{text-align:center;font-size:12px;color:var(--muted);padding:18px;border-top:1px solid var(--line);}

/* Responsive */
@media (max-width:960px){
  .hero-inner,.about-grid{grid-template-columns:1fr;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .plat-grid,.account-grid,.step-grid{grid-template-columns:1fr;}
  .hero h1{font-size:36px;}
  nav ul{display:none;}
}
@media (max-width:560px){
  .grid-4{grid-template-columns:1fr;}
  .footer-wrap{grid-template-columns:1fr;}
  .hero-meta{gap:26px;}
}