*{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#0f172a;--accent:#3b82f6;--accent2:#06b6d4;--accent3:#8b5cf6;--bg:#020617;--card:#0f172a;--border:#1e293b;--text:#e2e8f0;--muted:#94a3b8;--white:#f8fafc}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent2)}

/* Nav */
.nav{position:fixed;top:0;width:100%;z-index:1000;background:rgba(2,6,23,.85);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.nav-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:64px}
.nav-brand{font-size:1.25rem;font-weight:700;color:var(--white);display:flex;align-items:center;gap:10px}
.nav-brand .logo-dot{width:10px;height:10px;background:var(--accent);border-radius:50%;box-shadow:0 0 12px var(--accent)}
.nav-links{display:flex;gap:32px;list-style:none;align-items:center}
.nav-links a{color:var(--muted);font-size:.9rem;font-weight:500;transition:color .2s;position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--white)}
.nav-links a.active::after{content:'';position:absolute;bottom:-4px;left:0;right:0;height:2px;background:var(--accent);border-radius:1px}
.nav-login{padding:8px 20px!important;background:var(--accent)!important;color:var(--white)!important;border-radius:8px!important;font-weight:600!important;box-shadow:0 0 12px rgba(59,130,246,.3)}
.nav-login:hover{background:#2563eb!important;color:var(--white)!important;box-shadow:0 0 20px rgba(59,130,246,.5)!important}

/* Hero */
.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:120px 24px 80px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at 30% 50%,rgba(59,130,246,.08) 0%,transparent 50%),radial-gradient(ellipse at 70% 50%,rgba(6,182,212,.06) 0%,transparent 50%);animation:heroGlow 8s ease-in-out infinite alternate}
@keyframes heroGlow{0%{transform:translate(0,0)}100%{transform:translate(-3%,-3%)}}
.hero-content{position:relative;z-index:1;max-width:800px}
.hero-badge{display:inline-block;padding:6px 16px;border:1px solid var(--accent);border-radius:20px;font-size:.8rem;color:var(--accent);margin-bottom:24px;letter-spacing:1px}
.hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;color:var(--white);margin-bottom:16px;line-height:1.2}
.hero h1 .gradient{background:linear-gradient(135deg,var(--accent),var(--accent2),var(--accent3));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:1.1rem;color:var(--muted);max-width:600px;margin:0 auto 40px}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:8px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .2s;border:none}
.btn-primary{background:var(--accent);color:var(--white)}
.btn-primary:hover{background:#2563eb;transform:translateY(-1px);box-shadow:0 8px 24px rgba(59,130,246,.3)}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}

/* Sections */
.section{padding:100px 24px}
.section-inner{max-width:1200px;margin:0 auto}
.section-header{text-align:center;margin-bottom:64px}
.section-header h2{font-size:2rem;font-weight:700;color:var(--white);margin-bottom:12px}
.section-header p{color:var(--muted);font-size:1rem;max-width:600px;margin:0 auto}

/* Grid cards */
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:32px;transition:all .3s}
.card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:0 12px 40px rgba(59,130,246,.1)}
.card-icon{width:48px;height:48px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:20px}
.card h3{font-size:1.2rem;color:var(--white);margin-bottom:12px}
.card p{color:var(--muted);font-size:.9rem;line-height:1.7}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:24px;margin-top:64px}
.stat{text-align:center;padding:24px}
.stat-num{font-size:2.5rem;font-weight:800;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{color:var(--muted);font-size:.9rem;margin-top:4px}

/* Services pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:24px}
.pricing-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:36px;position:relative;transition:all .3s}
.pricing-card:hover{border-color:var(--accent);box-shadow:0 12px 40px rgba(59,130,246,.1)}
.pricing-card.featured{border-color:var(--accent)}
.pricing-card.featured::before{content:'推荐';position:absolute;top:16px;right:16px;background:var(--accent);color:var(--white);font-size:.75rem;padding:4px 12px;border-radius:12px;font-weight:600}
.pricing-tag{display:inline-block;padding:4px 12px;background:rgba(59,130,246,.1);color:var(--accent);border-radius:6px;font-size:.8rem;font-weight:600;margin-bottom:16px}
.pricing-card h3{font-size:1.3rem;color:var(--white);margin-bottom:8px}
.pricing-card .desc{color:var(--muted);font-size:.85rem;margin-bottom:20px;min-height:40px}
.pricing-price{margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid var(--border)}
.pricing-price .amount{font-size:2rem;font-weight:800;color:var(--white)}
.pricing-price .period{color:var(--muted);font-size:.9rem}
.pricing-features{list-style:none;margin-bottom:28px}
.pricing-features li{color:var(--muted);font-size:.9rem;padding:8px 0;display:flex;align-items:center;gap:10px}
.pricing-features li::before{content:'✓';color:var(--accent);font-weight:700}
.btn-contact{width:100%;padding:12px;background:rgba(59,130,246,.1);color:var(--accent);border:1px solid var(--accent);border-radius:8px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .2s;text-align:center;display:inline-block}
.btn-contact:hover{background:var(--accent);color:var(--white)}
.btn-pay{width:100%;padding:12px;background:linear-gradient(135deg,#1677ff,#0958d9);color:var(--white);border:none;border-radius:8px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .2s;text-align:center;display:inline-flex;align-items:center;justify-content:center;gap:8px;margin-top:10px}
.btn-pay:hover{box-shadow:0 8px 24px rgba(22,119,255,.35);transform:translateY(-1px)}
.btn-pay img{height:20px}
.btn-pay-paypal{width:100%;padding:12px;background:linear-gradient(135deg,#003087,#009cde);color:var(--white);border:none;border-radius:8px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .2s;text-align:center;display:inline-flex;align-items:center;justify-content:center;gap:8px;margin-top:10px}
.btn-pay-paypal:hover{box-shadow:0 8px 24px rgba(0,156,222,.35);transform:translateY(-1px)}
.btn-pay-paypal img{height:20px}
.pay-row{display:flex;gap:10px;margin-top:10px}
.pay-row .btn-pay,.pay-row .btn-pay-paypal{margin-top:0}
.pay-method{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:12px;padding:10px;background:rgba(22,119,255,.06);border-radius:8px}
.pay-method img{height:22px}
.pay-method span{color:var(--muted);font-size:.8rem}
.pay-badge{display:inline-flex;align-items:center;gap:12px;padding:8px 18px;background:rgba(22,119,255,.06);border:1px solid var(--border);border-radius:24px;margin-top:16px}
.pay-badge img{height:18px}
.pay-badge span{color:var(--muted);font-size:.8rem}

/* About */
.team-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.team-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:32px;text-align:center;transition:all .3s}
.team-card:hover{border-color:var(--accent)}
.team-avatar{width:80px;height:80px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent3));display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:1.5rem;color:var(--white);font-weight:700}
.team-card h3{color:var(--white);font-size:1.1rem;margin-bottom:4px}
.team-card .role{color:var(--accent);font-size:.85rem;margin-bottom:12px}
.team-card p{color:var(--muted);font-size:.85rem}
.contact-info{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px;margin-top:48px}
.contact-item{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px;display:flex;align-items:center;gap:16px}
.contact-icon{width:44px;height:44px;border-radius:10px;background:rgba(59,130,246,.1);display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.contact-item h4{color:var(--white);font-size:.9rem;margin-bottom:4px}
.contact-item p{color:var(--muted);font-size:.85rem}

/* Model pricing table */
.model-table-wrap{overflow-x:auto;margin-top:32px;border:1px solid var(--border);border-radius:12px}
.model-table{width:100%;border-collapse:collapse;font-size:.9rem}
.model-table thead{background:rgba(59,130,246,.08)}
.model-table th{color:var(--white);font-weight:600;padding:16px 20px;text-align:left;white-space:nowrap;border-bottom:1px solid var(--border)}
.model-table td{padding:14px 20px;border-bottom:1px solid var(--border);color:var(--muted);white-space:nowrap}
.model-table tbody tr:last-child td{border-bottom:none}
.model-table tbody tr:hover{background:rgba(59,130,246,.04)}
.model-table .model-name{color:var(--white);font-weight:600}
.model-table .price{color:var(--accent);font-weight:700;font-variant-numeric:tabular-nums}
.model-table .price.free{color:var(--green)}
.model-badge{display:inline-block;padding:2px 8px;border-radius:4px;font-size:.75rem;font-weight:600}
.model-badge.chat{background:rgba(59,130,246,.12);color:var(--accent)}
.model-badge.code{background:rgba(139,92,246,.12);color:var(--accent3)}
.model-badge.reason{background:rgba(6,182,212,.12);color:var(--accent2)}
.model-badge.vision{background:rgba(34,197,94,.12);color:#22c55e}
.model-badge.multi{background:rgba(236,72,153,.12);color:#ec4899}
.table-note{color:var(--muted);font-size:.8rem;margin-top:12px;text-align:center}

/* Footer */
.footer{border-top:1px solid var(--border);padding:40px 24px;text-align:center}
.footer-inner{max-width:1200px;margin:0 auto}
.footer p{color:var(--muted);font-size:.8rem;margin:4px 0}

/* Responsive */
@media(max-width:768px){.nav-links{gap:16px}.hero h1{font-size:2rem}.grid-3,.pricing-grid,.team-grid{grid-template-columns:1fr}}
@media(max-width:480px){.nav-links{display:none}.nav-login{font-size:.85rem!important;padding:7px 14px!important}.hero-btns{flex-direction:column;align-items:center}}