:root{--bg: #0b1020;--bg-soft: #11172b;--surface: #ffffff;--text: #1a2233;--text-soft: #5b6478;--muted: #8a92a6;--brand: #1e40af;--brand-2: #3b82f6;--border: #e6e8ef;--ring: rgba(30, 64, 175, .25);--radius: 16px;--shadow: 0 10px 30px rgba(16, 24, 40, .08);--container: 1080px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,PingFang SC,Microsoft YaHei,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:#f7f8fc;line-height:1.6;-webkit-font-smoothing:antialiased}.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}a{color:inherit;text-decoration:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:999px;font-weight:600;font-size:15px;border:1px solid transparent;background:var(--brand);color:#fff;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}.btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px var(--ring)}.btn-lg{padding:15px 28px;font-size:16px}.btn-sm{padding:8px 16px;font-size:14px}.btn-block{width:100%}.btn-ghost{background:transparent;color:var(--text);border-color:var(--border)}.btn-ghost:hover{background:#fff;box-shadow:var(--shadow)}.site-header{position:sticky;top:0;z-index:20;-webkit-backdrop-filter:saturate(180%) blur(10px);backdrop-filter:saturate(180%) blur(10px);background:#f7f8fccc;border-bottom:1px solid var(--border)}.nav{display:flex;align-items:center;justify-content:space-between;height:64px}.logo{font-weight:800;font-size:18px;letter-spacing:-.02em}.nav-links{display:flex;align-items:center;gap:22px;font-size:15px;color:var(--text-soft)}.nav-links a:not(.btn):hover{color:var(--text)}.hero{position:relative;overflow:hidden;background:radial-gradient(1000px 500px at 80% -10%,rgba(6,182,212,.18),transparent 60%),radial-gradient(900px 500px at 0% 0%,rgba(79,70,229,.18),transparent 55%)}.hero-inner{text-align:center;padding:90px 20px 80px}.badge{display:inline-block;padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--border);color:var(--brand);font-size:13px;font-weight:600;box-shadow:var(--shadow)}.hero-title{font-size:clamp(32px,6vw,56px);line-height:1.15;letter-spacing:-.02em;margin:22px auto 16px;max-width:760px;font-weight:800}.grad{background:linear-gradient(90deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}.hero-sub{font-size:clamp(16px,2.4vw,19px);color:var(--text-soft);max-width:620px;margin:0 auto 30px}.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}.hero-note{margin-top:22px;color:var(--muted);font-size:14px}.features{padding:80px 0}.section-title{text-align:center;font-size:clamp(26px,4vw,36px);font-weight:800;letter-spacing:-.02em;margin:0 0 10px}.section-sub{text-align:center;color:var(--text-soft);max-width:560px;margin:0 auto 44px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease}.card:hover{transform:translateY(-4px);box-shadow:0 18px 40px #1018281f}.card-icon{width:52px;height:52px;display:grid;place-items:center;font-size:26px;border-radius:14px;background:linear-gradient(135deg,#4f46e51f,#06b6d41f);margin-bottom:16px}.card h3{margin:0 0 8px;font-size:19px}.card p{margin:0;color:var(--text-soft);font-size:15px}.contact{padding:80px 0;background:linear-gradient(180deg,#f7f8fc,#eef1fb)}.contact-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}.contact .section-title,.contact .section-sub{text-align:left;margin-left:0}.contact-points{list-style:none;padding:0;margin:20px 0 0;color:var(--text-soft);display:grid;gap:10px}.contact-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}.field{margin-bottom:16px}.field label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}.field input,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:12px;font:inherit;color:var(--text);background:#fff;transition:border-color .15s ease,box-shadow .15s ease}.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px var(--ring)}.field textarea{resize:vertical}.form-hint{margin:14px 0 0;font-size:14px;min-height:20px;text-align:center}.form-hint.ok{color:#12855b}.form-hint.err{color:#d1443a}.site-footer{background:var(--bg);color:#c7cddb;padding:56px 0 24px}.site-footer .logo{color:#fff}.footer-inner{display:grid;grid-template-columns:1.4fr 2fr;gap:40px}.footer-brand p{margin:12px 0 0;color:var(--muted);max-width:260px}.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.footer-cols h4{color:#fff;margin:0 0 12px;font-size:15px}.footer-cols a{display:block;color:#a9b1c4;font-size:14px;margin-bottom:8px}.footer-cols a:hover{color:#fff}.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);color:var(--muted);font-size:13px;text-align:center}@media (max-width: 860px){.cards{grid-template-columns:1fr}.contact-inner,.footer-inner{grid-template-columns:1fr;gap:28px}}@media (max-width: 560px){.nav-links a:not(.btn){display:none}.hero-inner{padding:64px 20px 56px}.btn-lg{width:100%}.hero-actions{flex-direction:column}.footer-cols{grid-template-columns:repeat(2,1fr)}}