:root{--navy: #062a44;--deep: #075985;--blue: #0ea5e9;--gold: #f5a524;--amber: #d97706;--ink: #0f172a;--muted: #5b6b7b;--line: #e5eef5;--soft: #fdf3e0;--alt: #f2f7fb;--red: #dc2626;--orange: #f97316;--green: #16a34a;--teal: #14b8a6;--font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;--container: 1200px;--radius-card: 16px;--radius-btn: 40px;--shadow-card: 0 4px 20px rgba(2, 44, 68, .06);--shadow-strong: 0 10px 30px rgba(2, 44, 68, .12);--section-pad: 88px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-sans);color:var(--ink);background:#fff;line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:var(--deep);text-decoration:none}a:hover{color:var(--blue)}img,svg{max-width:100%;height:auto;display:block}h1,h2,h3,h4,h5{font-weight:700;line-height:1.3;color:var(--deep)}ul{list-style:none}.container{max-width:var(--container);margin:0 auto;padding:0 24px}.section{padding:var(--section-pad) 0}.section.alt{background:var(--alt)}.sec-head{text-align:center;max-width:760px;margin:0 auto 48px}.sec-title{font-size:36px;font-weight:800;color:var(--deep);letter-spacing:1px}.sec-sub{font-size:17px;color:var(--muted);margin-top:12px}@media(max-width:768px){:root{--section-pad: 56px}.sec-title{font-size:28px}.sec-sub{font-size:15px}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;cursor:pointer;font-family:inherit;font-size:16px;font-weight:700;border-radius:var(--radius-btn);padding:14px 34px;letter-spacing:1px;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}.btn-primary{background:linear-gradient(135deg,var(--gold),#fb923c);color:#fff;box-shadow:0 8px 20px #f5a5244d}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px #f5a52466;color:#fff}.btn-ghost{background:transparent;color:var(--deep);border:1.5px solid var(--deep)}.btn-ghost:hover{background:var(--deep);color:#fff;transform:translateY(-2px)}.btn-light{background:#fff;color:var(--deep)}.btn-light:hover{transform:translateY(-2px)}.btn-outline-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.7)}.btn-outline-light:hover{background:#fff;color:var(--deep);border-color:#fff;transform:translateY(-2px)}.btn-lg{font-size:18px;padding:16px 44px}.card{background:#fff;border:1.5px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card)}.site-nav{position:sticky;top:0;z-index:100;background:#fffffff2;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.site-nav .inner{max-width:var(--container);margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;justify-content:space-between}.nav-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--navy)}.nav-brand .logo{width:34px;height:34px}.nav-brand 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var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-card);display:flex;flex-direction:column}.scen-tag{align-self:flex-start;background:#e0f2fe;color:var(--deep);font-size:13px;font-weight:700;border-radius:8px;padding:3px 14px;margin-bottom:12px}.scen-card h4{font-size:21px;margin-bottom:8px}.scen-desc{font-size:15px;color:var(--muted);margin-bottom:14px;flex:1}.scen-bf,.scen-af{font-size:15px;line-height:1.6;margin-bottom:8px;display:flex;gap:8px}.scen-bf b{color:var(--red)}.scen-af b{color:var(--green)}.compare-wrap{background:#fff;border:1.5px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card)}.compare-table{width:100%;border-collapse:collapse;font-size:14px}.compare-table th,.compare-table td{padding:16px 14px;text-align:center;border-bottom:1px solid var(--line)}.compare-table tr:last-child td{border-bottom:none}.compare-table thead 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b{color:var(--amber)}.case-ref{font-size:13px;color:var(--muted);margin-top:14px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.form-field{display:flex;flex-direction:column;gap:6px}.form-field.full{grid-column:1 / -1}.form-field label{font-size:14px;font-weight:600;color:var(--deep)}.form-field label span{color:var(--red)}.form-field input,.form-field select,.form-field textarea{font-family:inherit;font-size:15px;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;outline:none;transition:border-color .15s ease;background:#fff}.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--blue)}.form-field textarea{resize:vertical;min-height:120px}.form-error{font-size:13px;color:var(--red)}.form-msg{margin-top:16px;padding:12px 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