:root{--gold:#c8a04a;--gold-dark:#8d6b1f;--gold-soft:#f5ecd6;--navy:#1c2434;--navy-light:#2b3550;--bg:#ffffff;--bg-soft:#f7f7f9;--text:#1c2434;--text-muted:#6b7280;--line:#e6e8ee;--radius:10px;--shadow:0 4px 18px rgba(28,36,52,.06);--shadow-hover:0 8px 28px rgba(28,36,52,.12)}*{box-sizing:border-box;margin:0;padding:0}html,body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;font-size:15px}a{color:var(--navy);text-decoration:none;transition:color .2s}a:hover{color:var(--gold-dark)}img{max-width:100%;display:block}.container{max-width:1180px;margin:0 auto;padding:0 24px}.btn{display:inline-block;padding:10px 22px;border-radius:6px;font-weight:600;font-size:14px;transition:all .2s;cursor:pointer;border:none;text-align:center}.btn-primary{background:linear-gradient(135deg,var(--gold) 0%,var(--gold-dark) 100%);color:#fff}.btn-primary:hover{box-shadow:0 6px 18px rgba(141,107,31,.35);color:#fff;transform:translateY(-1px)}.btn-outline{border:1px solid var(--gold);color:var(--gold-dark);background:#fff}.btn-outline:hover{background:var(--gold-soft);color:var(--gold-dark)}.btn-lg{padding:14px 36px;font-size:15px}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.site-header .container{display:flex;align-items:center;height:64px;gap:36px}.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--navy)}.brand-logo{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--gold) 0%,var(--gold-dark) 100%);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:16px;letter-spacing:.5px}.nav{display:flex;gap:28px;flex:1}.nav a{font-size:14px;color:var(--navy);font-weight:500}.nav a.active,.nav a:hover{color:var(--gold-dark)}.header-actions{display:flex;gap:10px;align-items:center}.hero{position:relative;padding:90px 0 80px;background:linear-gradient(180deg,#fbf7ec 0%,#fff 100%);overflow:hidden}.hero::before{content:"";position:absolute;right:-120px;top:-80px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(200,160,74,.15),transparent 65%)}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center;position:relative;z-index:1}.hero h1{font-size:42px;line-height:1.25;font-weight:700;color:var(--navy);margin-bottom:18px}.hero h1 .accent{color:var(--gold-dark)}.hero p.lead{font-size:16px;color:var(--text-muted);margin-bottom:28px;max-width:540px}.hero-cta{display:flex;gap:14px;flex-wrap:wrap}.hero-meta{display:flex;gap:36px;margin-top:36px}.hero-meta div b{display:block;font-size:24px;color:var(--gold-dark);font-weight:700}.hero-meta div 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p{font-size:14px;color:var(--text-muted)}.products{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:all .25s}.product-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:var(--gold)}.product-card .symbol{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--gold-dark);font-weight:600;background:var(--gold-soft);padding:4px 10px;border-radius:4px;margin-bottom:14px}.product-card h3{font-size:20px;font-weight:700;color:var(--navy);margin-bottom:10px}.product-card p{font-size:14px;color:var(--text-muted);margin-bottom:18px;min-height:60px}.product-card ul{list-style:none;margin-bottom:18px}.product-card ul li{font-size:13px;color:var(--text);padding:5px 0 5px 20px;position:relative}.product-card ul li::before{content:"✓";position:absolute;left:0;color:var(--gold-dark);font-weight:700}.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1000px;margin:0 auto}.pricing-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:36px 28px;text-align:center;position:relative;transition:all .25s}.pricing-card.featured{border:2px solid var(--gold);box-shadow:var(--shadow-hover);transform:translateY(-6px)}.pricing-card .badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--gold),var(--gold-dark));color:#fff;font-size:12px;padding:4px 14px;border-radius:20px;font-weight:600}.pricing-card h3{font-size:18px;color:var(--navy);margin-bottom:8px;font-weight:600}.pricing-card .price{font-size:42px;font-weight:700;color:var(--gold-dark);margin:14px 0 6px;font-family:"Consolas",monospace}.pricing-card .price small{font-size:14px;color:var(--text-muted);font-weight:400}.pricing-card 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a:hover{color:var(--gold-dark)}.article{max-width:880px;margin:0 auto;background:#fff;padding:48px 52px;border-radius:12px;box-shadow:var(--shadow);border:1px solid var(--line);margin-top:-24px;margin-bottom:60px;position:relative;z-index:1}.article h2{font-size:20px;color:var(--navy);margin:30px 0 12px;padding-left:12px;border-left:3px solid var(--gold)}.article h3{font-size:16px;color:var(--navy);margin:20px 0 10px}.article p{margin-bottom:12px;color:#3a4357;line-height:1.85}.article ul,.article ol{margin:8px 0 14px 24px}.article li{margin-bottom:6px;color:#3a4357;line-height:1.85}.article .meta{color:var(--text-muted);font-size:13px;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:20px}.article strong{color:var(--navy)}.docs-layout{display:grid;grid-template-columns:240px 1fr;gap:36px;padding:40px 0 80px}.docs-side{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px;height:fit-content;position:sticky;top:84px}.docs-side 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td{padding:10px 14px;border:1px solid var(--line);text-align:left}table.api th{background:var(--bg-soft);color:var(--navy);font-weight:600}.method-tag{display:inline-block;padding:3px 10px;border-radius:4px;font-size:12px;font-weight:600;color:#fff;background:#16a34a;margin-right:8px}.purchase-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:start;padding:50px 0}.purchase-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:36px;box-shadow:var(--shadow)}.purchase-card h2{font-size:22px;color:var(--navy);margin-bottom:18px}.form-group{margin-bottom:18px}.form-group label{display:block;font-size:14px;color:var(--navy);margin-bottom:6px;font-weight:500}.form-group input,.form-group select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:6px;font-size:14px;font-family:inherit;background:#fff;transition:border-color .2s}.form-group input:focus,.form-group 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(max-width:960px){.hero-grid,.docs-layout,.purchase-grid{grid-template-columns:1fr}.features{grid-template-columns:repeat(2,1fr)}.products,.pricing{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.nav{display:none}.hero h1{font-size:30px}.article{padding:30px 22px}.cta-banner{flex-direction:column;text-align:center}.docs-side{position:static}}