:root{--primary:#1E66F5;--primary-600:#1554cc;--bg:#0b1220;--panel:#0f1a2e;--text:#e6eefc;--muted:#9bb0d3;--border:#1c2a4a;--shadow:0 10px 30px rgba(0,0,0,.35)}
*{box-sizing:border-box}html,body{margin:0;padding:0}
body{font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,'Microsoft YaHei';background:radial-gradient(1200px 800px at 70% -10%,#14305f 0%,#0b1220 60%) no-repeat,#0b1220;color:var(--text);line-height:1.65}
a{color:var(--text);text-decoration:none}.container{width:92%;max-width:1180px;margin:0 auto}
.header{position:sticky;top:0;z-index:50;background:rgba(11,18,32,.7);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:.9rem 0}
.brand{display:flex;gap:.75rem;align-items:center}.brand .logo{width:40px;height:40px}.brand .title{font-weight:700;letter-spacing:.3px}
.nav{display:flex;gap:1rem;align-items:center}.nav a{opacity:.9}.nav a:hover{opacity:1}
.btn{padding:.55rem 1rem;border-radius:10px;border:1px solid var(--primary);color:#fff;background:transparent;transition:.15s}
.btn.primary{background:linear-gradient(135deg,var(--primary),#3a87ff);border-color:transparent;box-shadow:var(--shadow)}.btn.primary:hover{filter:brightness(1.05)}.btn.ghost:hover{background:rgba(30,102,245,.1)}
.hero{padding:64px 0 36px;border-bottom:1px solid var(--border)}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:2rem;align-items:center}
.hero h1{font-size:2.25rem;margin:.2rem 0 .8rem}.hero p{color:var(--muted);max-width:640px;margin:.2rem 0 1.2rem}.hero .badge{display:inline-block;padding:.25rem .6rem;border:1px solid var(--border);border-radius:999px;color:#cfe0ff;background:#0c1730}.hero-visual img{width:100%;max-width:540px;display:block}
.section{padding:48px 0;border-bottom:1px solid var(--border)}.section-title{font-size:1.35rem;margin:0 0 1.1rem}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.card{background:linear-gradient(180deg,#0f1a2e 0%, #0b1220 100%);border:1px solid var(--border);border-radius:14px;padding:1rem;box-shadow:var(--shadow)}.card h3{margin:.2rem 0 .4rem}.card p{color:var(--muted)}
.product{display:flex;flex-direction:column;gap:.6rem}.product img{width:100%;border-radius:10px;border:1px solid var(--border)}
.footer{padding:28px 0;color:#b8c7e6}.footer-inner{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:1rem;align-items:center}.footer a{color:#b8c7e6}.footer .copy{text-align:right;color:#8ea4cf}
.form{display:grid;gap:.8rem;max-width:560px}.input, textarea{width:100%;padding:.8rem .9rem;border-radius:10px;border:1px solid var(--border);background:#0b1529;color:var(--text)}textarea{min-height:140px;resize:vertical}.input:focus, textarea:focus{outline:1px solid var(--primary)}
.inline{display:flex;gap:.8rem;flex-wrap:wrap}.notice{color:#9bb0d3;font-size:.92rem}
@media (max-width:960px){.hero-grid{grid-template-columns:1fr}.grid-3{grid-template-columns:1fr}.grid-4{grid-template-columns:repeat(2,1fr)}.footer-inner{grid-template-columns:1fr;gap:.6rem}.footer .copy{text-align:left}}