:root{--primary:#2b5cff;--primary-dark:#1e3fd8;--accent:#00d4a0;--dark:#0b1526;--text:#243044;--muted:#5b6b84;--bg:#f5f8fd;--card:#ffffff;--radius:14px;--shadow:0 8px 24px rgba(15,35,95,.08)}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.75}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
ul,ol{list-style:none}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;z-index:100;background:rgba(11,21,38,.94);backdrop-filter:blur(8px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px;position:relative}
.logo{color:#fff;font-size:20px;font-weight:700;white-space:nowrap}
.logo:hover{text-decoration:none}
.main-nav{display:flex;gap:26px}
.main-nav a{color:#c8d4ea;font-size:15px;padding:6px 2px}
.main-nav a:hover,.main-nav a.active{color:#fff;text-decoration:none}
.nav-cta{white-space:nowrap;padding:9px 20px;font-size:14px}
.menu-toggle{display:none;background:none;border:1px solid rgba(255,255,255,.3);color:#fff;font-size:20px;border-radius:8px;padding:3px 11px;cursor:pointer}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-size:16px;font-weight:600;transition:.25s;border:none;cursor:pointer}
.btn-primary{background:linear-gradient(90deg,var(--primary),var(--accent));color:#fff;box-shadow:0 6px 18px rgba(43,92,255,.35)}
.btn-primary:hover{transform:translateY(-2px);text-decoration:none;box-shadow:0 10px 22px rgba(43,92,255,.45);color:#fff}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.35)}
.btn-ghost:hover{background:rgba(255,255,255,.22);text-decoration:none;color:#fff}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-block{width:100%;margin-top:16px}
.hero{background:radial-gradient(1100px 500px at 18% -10%,rgba(43,92,255,.55),transparent),radial-gradient(900px 420px at 92% 12%,rgba(0,212,160,.32),transparent),var(--dark);color:#fff;padding:88px 0 80px}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-badge{display:inline-block;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);padding:6px 16px;border-radius:999px;font-size:14px;margin-bottom:18px;color:#dbe6fa}
.hero h1{font-size:40px;line-height:1.3;margin-bottom:18px}
.hero-sub{color:#c9d6ee;font-size:17px;margin-bottom:26px}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.hero-points li{margin-bottom:10px;color:#dbe6fa;font-size:15px}
.hero-card{background:linear-gradient(160deg,#16233f,#0e1930);border:1px solid rgba(255,255,255,.14);border-radius:24px;padding:26px;box-shadow:0 20px 50px rgba(0,0,0,.45)}
.app-row{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.app-icon{width:64px;height:64px;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;font-size:32px;flex-shrink:0}
.app-row strong{display:block;font-size:17px;color:#fff}
.app-row span{font-size:13px;color:#9fb2d6}
.spec-line{display:flex;justify-content:space-between;gap:12px;font-size:14px;color:#a9b8d6;padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.12)}
.spec-line span:last-child{color:#e6edfb;text-align:right}
.stats{background:#fff;padding:34px 0;box-shadow:var(--shadow)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stats-grid strong{display:block;font-size:30px;color:var(--primary);line-height:1.4}
.stats-grid span{color:var(--muted);font-size:14px}
.section{padding:72px 0}
.section.alt{background:#fff}
.section-head{text-align:center;max-width:820px;margin:0 auto 44px}
.section-head h2{font-size:30px;margin-bottom:12px}
.section-head p{color:var(--muted)}
.eyebrow{display:inline-block;color:var(--accent);font-weight:700;letter-spacing:2px;font-size:14px;margin-bottom:8px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{background:var(--card);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:.25s;border:1px solid #eef2fa}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(15,35,95,.12)}
.card .icon{font-size:34px;margin-bottom:14px;display:block}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
.card .meta{margin-top:14px;font-size:13px;color:#8494ae;display:flex;flex-wrap:wrap;gap:8px 16px}
.card .meta span{background:#f0f5ff;border-radius:999px;padding:3px 12px}
.card-btn{margin-top:18px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{background:#fff;border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);text-align:center;border:1px solid #eef2fa}
.step .num{font-size:36px;display:block;margin-bottom:12px}
.step h3{font-size:17px;margin-bottom:8px}
.step p{color:var(--muted);font-size:14px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.split h2{font-size:28px;margin-bottom:16px}
.split p{color:var(--muted);margin-bottom:14px}
.feature-list li{background:#fff;border-radius:12px;box-shadow:var(--shadow);padding:14px 18px;margin-bottom:12px;font-size:15px;display:flex;gap:10px;align-items:flex-start}
.feature-list li b{flex-shrink:0}
.chain-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.chain-tags span{background:#eef4ff;color:var(--primary-dark);border:1px solid #dbe6ff;border-radius:999px;padding:5px 14px;font-size:14px}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
th,td{padding:14px 16px;text-align:left;font-size:15px;border-bottom:1px solid #eef2f9}
th{background:#f0f5ff;color:#27334a;white-space:nowrap}
tr:last-child td{border-bottom:none}
.faq details{background:#fff;border-radius:12px;box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden;border:1px solid #eef2fa}
.faq summary{padding:18px 22px;font-weight:600;cursor:pointer;font-size:16px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"＋";float:right;color:var(--primary);font-weight:700}
.faq details[open] summary::after{content:"－"}
.faq details p{padding:0 22px 18px;color:var(--muted);font-size:15px}
.news-item{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:26px 30px;margin-bottom:22px;border:1px solid #eef2fa}
.news-meta{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:10px;flex-wrap:wrap}
.tag{background:#eaf3ff;color:var(--primary);padding:2px 12px;border-radius:999px;font-size:12px;font-weight:600}
.news-item h2{font-size:20px;margin-bottom:10px}
.news-item p{color:var(--muted);font-size:15px;margin-bottom:8px}
.page-hero{background:linear-gradient(120deg,#0e1c36,#13294f);color:#fff;padding:52px 0 58px}
.page-hero h1{font-size:32px;margin-bottom:12px}
.page-hero p{color:#c9d6ee;max-width:860px}
.breadcrumb{color:#9fb2d6;margin-bottom:14px;font-size:14px}
.breadcrumb a{color:#9fb2d6}
.breadcrumb a:hover{color:#fff}
.timeline{position:relative;padding-left:30px;border-left:2px solid #dbe4f5;max-width:820px;margin:0 auto}
.timeline li{position:relative;padding-bottom:28px}
.timeline li::before{content:"";position:absolute;left:-38px;top:8px;width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 0 0 4px #e6edff}
.timeline strong{display:block;margin-bottom:4px;color:var(--primary-dark)}
.timeline p{color:var(--muted);font-size:15px}
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.form{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:32px;max-width:820px;margin:0 auto;border:1px solid #eef2fa}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form label{display:block;font-size:14px;margin:14px 0 6px;font-weight:600}
.form input,.form select,.form textarea{width:100%;padding:11px 14px;border:1px solid #d8e1f0;border-radius:10px;font-size:15px;font-family:inherit;color:var(--text)}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(43,92,255,.12)}
.form .btn{margin-top:22px;width:100%}
.notice{background:#fff8e8;border:1px solid #ffe3a3;border-radius:12px;padding:16px 20px;font-size:14px;color:#8a6116;margin-top:18px}
.cta{background:linear-gradient(120deg,var(--primary-dark),var(--primary));color:#fff;text-align:center;padding:60px 20px;border-radius:20px;max-width:1080px;margin:0 auto}
.cta h2{font-size:28px;margin-bottom:12px}
.cta p{color:#dbe6ff;margin-bottom:24px}
.site-footer{background:var(--dark);color:#a9b8d6;padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:32px;padding-bottom:36px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:14px}
.site-footer p{font-size:14px}
.site-footer a{display:block;color:#a9b8d6;font-size:14px;margin-bottom:8px}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;text-align:center;font-size:13px}
.footer-bottom p{margin-bottom:6px}
.footer-keywords{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 10px}
.footer-keywords a{display:inline;margin:0}
@media (max-width:960px){
.hero-inner,.split{grid-template-columns:1fr}
.grid-3,.grid-4,.contact-grid,.steps{grid-template-columns:1fr 1fr}
.stats-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
.hero h1{font-size:32px}
.section-head h2,.split h2{font-size:26px}
}
@media (max-width:720px){
.hero{padding:60px 0}
.hero h1{font-size:26px}
.hero-inner,.grid-3,.grid-4,.contact-grid,.steps,.form-row{grid-template-columns:1fr}
.menu-toggle{display:block}
.main-nav{position:absolute;top:64px;left:-20px;right:-20px;background:var(--dark);flex-direction:column;padding:14px 24px 18px;gap:12px;display:none;box-shadow:0 14px 26px rgba(0,0,0,.35)}
.main-nav.open{display:flex}
.nav-cta{display:none}
.section{padding:52px 0}
.page-hero h1{font-size:25px}
.footer-grid{grid-template-columns:1fr}
}