/* =========================================================
   TMGM · 全新风格：深色宇宙背景 + 蓝紫渐变 + 玻璃拟态
   配色：极深蓝黑 #070a18 + 渐变蓝紫 + 青色高光
   ========================================================= */

:root{
  --bg:#070a18;
  --bg2:#0d1330;
  --brand:#6c8cff;      /* 主蓝 */
  --brand2:#a86bff;     /* 紫 */
  --accent:#22e6c5;     /* 青高光 */
  --text:#e8ecff;
  --muted:#9aa3c7;
  --card:rgba(255,255,255,.06);
  --border:rgba(255,255,255,.12);
  --shadow:0 8px 30px rgba(0,0,0,.45);
}

*{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(--text);
  line-height:1.65;
  overflow-x:hidden;
  /* 宇宙背景：径向光晕 */
  background-image:
    radial-gradient(1200px 700px at 82% -8%, rgba(108,140,255,.28), transparent 60%),
    radial-gradient(900px 600px at 8% 12%, rgba(168,107,255,.22), transparent 60%),
    radial-gradient(700px 500px at 50% 105%, rgba(34,230,197,.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:40px;letter-spacing:.5px}
.section-title.left{text-align:left}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:rgba(7,10,24,.55);border-bottom:1px solid var(--border);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{font-size:24px;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:.25s;position:relative}
nav a:hover,.nav-wrap .active{color:var(--text)}
nav a:not(.active)::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));transition:width .25s}
nav a:hover::after{width:100%}
.btn-login{padding:9px 20px;border-radius:999px;font-size:13px;font-weight:600;
  background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;transition:.3s;box-shadow:0 4px 18px rgba(108,140,255,.35)}
.btn-login:hover{transform:translateY(-1px);box-shadow:0 6px 24px rgba(168,107,255,.45)}

/* ---------- 按钮 ---------- */
.btn-primary{display:inline-block;padding:13px 28px;border-radius:12px;font-weight:700;font-size:15px;
  background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;transition:.3s;box-shadow:0 6px 22px rgba(108,140,255,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(168,107,255,.45)}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:12px;
  border:1px solid var(--border);color:var(--text);font-weight:600;transition:.3s;backdrop-filter:blur(6px)}
.btn-ghost:hover{border-color:var(--brand);color:var(--accent);background:rgba(108,140,255,.08)}

/* ---------- Hero ---------- */
.hero{padding:80px 0 70px;position:relative}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-text h1{font-size:52px;font-weight:900;line-height:1.15;letter-spacing:.5px}
.hero-text h1 span{background:linear-gradient(90deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{margin:22px 0 30px;color:var(--muted);font-size:16.5px;max-width:540px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-meta{display:flex;gap:44px;margin-top:42px}
.hero-meta li{list-style:none;text-align:left}
.hero-meta strong{display:block;font-size:30px;font-weight:900;background:linear-gradient(90deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-meta span{font-size:13px;color:var(--muted)}

/* 报价玻璃卡 */
.hero-card{background:var(--card);border:1px solid var(--border);border-radius:22px;padding:26px 24px;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow)}
.card-title{font-weight:800;font-size:16px;margin-bottom:16px;color:var(--accent)}
.quote-list li{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.08);font-size:14.5px}
.quote-list li:last-child{border-bottom:none}
.up{color:#4ade80;font-weight:700}
.down{color:#f87171;font-weight:700}
.card-note{font-size:11.5px;color:var(--muted);margin-top:14px;text-align:center}

/* ---------- 特性卡片 ---------- */
.features{padding:70px 0}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feat-card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:26px 22px;transition:.35s;backdrop-filter:blur(10px);position:relative;overflow:hidden}
.feat-card::before{content:"";position:absolute;inset:0;background:radial-gradient(400px 200px at 0% 0%,rgba(108,140,255,.18),transparent 60%);opacity:0;transition:.35s}
.feat-card:hover{transform:translateY(-6px);border-color:rgba(108,140,255,.5);box-shadow:0 14px 40px rgba(108,140,255,.18)}
.feat-card:hover::before{opacity:1}
.feat-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:15px;margin-bottom:16px;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 6px 18px rgba(108,140,255,.35)}
.feat-card h3{font-size:17px;margin-bottom:8px}
.feat-card p{font-size:13.5px;color:var(--muted)}

/* ---------- 平台 ---------- */
.platform{padding:70px 0;background:linear-gradient(180deg,transparent,rgba(13,19,48,.6),transparent)}
.plat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.plat-item{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:30px 24px;transition:.3s;backdrop-filter:blur(10px)}
.plat-item:hover{border-color:var(--accent);background:rgba(34,230,197,.06)}
.plat-item h3{font-size:18px;margin-bottom:10px}
.plat-item p{font-size:14px;color:var(--muted)}

/* ---------- 关于 ---------- */
.about{padding:70px 0}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about p{color:var(--muted);margin:16px 0 24px;font-size:15px}
.about-stats li{display:flex;flex-direction:column;padding:18px 22px;margin-bottom:14px;background:var(--card);border:1px solid var(--border);border-radius:14px;backdrop-filter:blur(10px);transition:.3s}
.about-stats li:hover{border-color:var(--brand)}
.about-stats strong{font-size:18px;font-weight:800;color:var(--accent)}
.about-stats span{font-size:13px;color:var(--muted);margin-top:4px}

/* ---------- 内页 Hero ---------- */
.page-hero{padding:64px 0 40px;text-align:center}
.page-hero h1{font-size:42px;font-weight:900}
.page-hero p{color:var(--muted);margin-top:12px;font-size:16px}

/* ---------- 账户卡片 ---------- */
.account-section{padding:30px 0 70px}
.account-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.account-card{position:relative;background:var(--card);border:1px solid var(--border);border-radius:20px;padding:30px 26px;backdrop-filter:blur(12px);transition:.35s;display:flex;flex-direction:column}
.account-card:hover{transform:translateY(-6px);border-color:rgba(108,140,255,.5);box-shadow:0 16px 44px rgba(108,140,255,.2)}
.account-card h2{font-size:22px;margin-bottom:6px}
.acc-tag{font-size:12.5px;color:var(--accent);margin-bottom:16px;font-weight:600}
.account-card ul{flex:1;margin-bottom:22px}
.account-card li{padding:8px 0;font-size:14px;color:var(--muted);border-bottom:1px dashed rgba(255,255,255,.06)}
.account-card li:last-child{border-bottom:none}
.account-card .btn-primary{text-align:center;width:100%}
.account-card.featured{border-color:rgba(168,107,255,.55);background:linear-gradient(180deg,rgba(168,107,255,.12),rgba(108,140,255,.06));box-shadow:0 10px 36px rgba(168,107,255,.18)}
.badge{position:absolute;top:16px;right:16px;font-size:11px;font-weight:800;padding:5px 12px;border-radius:999px;color:#fff;background:linear-gradient(135deg,var(--brand2),var(--accent));box-shadow:0 4px 14px rgba(168,107,255,.4)}

/* 对比表 */
.compare{margin-top:60px}
.acc-table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--border);border-radius:16px;overflow:hidden;backdrop-filter:blur(10px)}
.acc-table th,..acc-table td{padding:14px 16px;text-align:center;font-size:14px;border-bottom:1px solid var(--border)}
.acc-table thead th{background:rgba(108,140,255,.14);font-weight:800;color:var(--accent)}
.acc-table tbody tr:last-child td{border-bottom:none}
.acc-table tbody td:first-child{text-align:left;font-weight:600;color:var(--muted)}

/* 步骤 */
.open-steps{padding:70px 0}
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:30px 24px;text-align:center;backdrop-filter:blur(10px);transition:.3s;position:relative}
.step:hover{border-color:var(--brand)}
.step b{font-size:34px;font-weight:900;background:linear-gradient(135deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.step h3{font-size:17px;margin:8px 0}
.step p{font-size:13.5px;color:var(--muted)}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:40px;border-top:1px solid var(--border);background:rgba(7,10,24,.7);backdrop-filter:blur(10px);padding:44px 0 0}
.footer-wrap{display:grid;grid-template-columns:1.4fr 1fr 1.4fr;gap:40px;padding-bottom:30px}
.foot-note{color:var(--muted);font-size:13px;margin-top:8px}
.foot-risk{color:var(--muted);font-size:12.5px;line-height:1.7}
.site-footer h4{font-size:14px;margin-bottom:12px;color:var(--accent)}
.site-footer ul li{margin-bottom:8px}
.site-footer ul a{color:var(--muted);font-size:13.5px;transition:.2s}
.site-footer ul a:hover{color:var(--accent)}
.foot-bottom{text-align:center;font-size:12px;color:var(--muted);padding:18px;border-top:1px solid var(--border)}

/* ---------- 响应式 ---------- */
@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-text h1{font-size:40px}
  nav ul{display:none}
}
@media (max-width:560px){
  .grid-4{grid-template-columns:1fr}
  .hero-meta{gap:26px}
  .hero-text h1{font-size:32px}
  .section-title{font-size:24px}
}