:root{--surface-canvas: #F1F5F9;--surface-card: #FFFFFF;--surface-subtle: #F8FAFC;--surface-sunken: #E2E8F0;--surface-dark: #0F172A;--text-primary: #0F172A;--text-secondary: #475569;--text-tertiary: #64748B;--text-disabled: #94A3B8;--text-inverse: #F8FAFC;--border-default: #E2E8F0;--border-strong: #CBD5E1;--status-success: #16A34A;--status-warning: #D97706;--status-error: #DC2626;--status-info: #2563EB;--dot-running: #10B981;--dot-syncing: #F59E0B;--dot-idle: #94A3B8;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-icon: 10px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);--shadow-md: 0 4px 12px rgba(15, 23, 42, .06);--nav-h: 64px;--font-mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,sans-serif;background:var(--surface-canvas);color:var(--text-primary);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}.mono{font-family:var(--font-mono);font-feature-settings:"tnum"}section[id],header[id]{scroll-margin-top:calc(var(--nav-h) + 16px)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14px;font-weight:500;line-height:1;border-radius:var(--radius-sm);cursor:pointer;transition:all .15s ease;border:1px solid transparent;white-space:nowrap;font-family:inherit}.btn:focus-visible{outline:2px solid var(--status-info);outline-offset:2px}.btn-primary{background:var(--surface-dark);color:var(--text-inverse);padding:0 20px;height:40px}.btn-primary:hover{background:#1e293b;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--surface-card);color:var(--text-primary);border-color:var(--border-strong);padding:0 20px;height:40px}.btn-secondary:hover{background:var(--surface-subtle);border-color:var(--text-tertiary)}.btn-lg{height:48px;padding:0 28px;font-size:15px;border-radius:10px}.nav{position:sticky;top:0;z-index:100;background:#ffffffeb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-default)}.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:var(--nav-h);display:flex;align-items:center;gap:40px}.nav-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:-.01em}.nav-brand .brand-sub{font-size:11px;font-weight:500;color:var(--text-tertiary);border:1px solid var(--border-default);border-radius:999px;padding:2px 8px;margin-left:4px}.nav-menu{display:flex;gap:4px;flex:1}.nav-menu a{font-size:14px;color:var(--text-secondary);padding:8px 14px;border-radius:var(--radius-sm);transition:all .15s ease}.nav-menu a:hover{color:var(--text-primary);background:var(--surface-subtle)}.nav-actions{display:flex;align-items:center;gap:10px}.nav-actions .btn-primary,.nav-actions .btn-secondary{height:36px;padding:0 16px;font-size:13px}.nav-toggle{display:none;width:40px;height:40px;border-radius:var(--radius-sm);border:1px solid var(--border-default);background:var(--surface-card);align-items:center;justify-content:center;cursor:pointer;color:var(--text-primary)}.hero{padding:80px 24px 72px}.hero-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:center}.hero h1{font-size:46px;font-weight:700;letter-spacing:-.03em;line-height:1.18;color:var(--text-primary);margin-bottom:20px}.hero h1 .accent{color:var(--text-tertiary);font-weight:600}.hero p.lead{font-size:17px;color:var(--text-secondary);max-width:460px;margin-bottom:32px}.hero-cta{display:flex;gap:12px}.browser{background:var(--surface-card);border:1px solid var(--border-default);border-radius:var(--radius-lg);box-shadow:0 12px 32px #0f172a14;overflow:hidden}.browser-bar{height:40px;background:var(--surface-subtle);border-bottom:1px solid var(--border-default);display:flex;align-items:center;gap:8px;padding:0 16px}.browser-dot{width:10px;height:10px;border-radius:50%;background:var(--surface-sunken)}.browser-url{flex:1;max-width:260px;margin-left:8px;height:22px;background:var(--surface-card);border:1px solid var(--border-default);border-radius:6px;font-size:11px;color:var(--text-tertiary);display:flex;align-items:center;padding:0 10px;font-family:var(--font-mono)}.browser-body{padding:20px}.mini-topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.mini-title{font-size:13px;font-weight:600}.mini-title small{display:block;font-size:11px;font-weight:400;color:var(--text-tertiary);font-family:var(--font-mono)}.mini-btn{font-size:11px;background:var(--surface-dark);color:#fff;border-radius:6px;padding:6px 12px}.mini-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:14px}.mini-stat{border:1px solid var(--border-default);border-radius:var(--radius-sm);padding:12px;background:var(--surface-card)}.mini-stat .label{font-size:11px;color:var(--text-tertiary);margin-bottom:6px}.mini-stat .num{font-size:20px;font-weight:600;letter-spacing:-.02em}.mini-stat .num .unit{font-size:12px;color:var(--text-tertiary)}.mini-stat .delta{font-size:11px;font-family:var(--font-mono);margin-top:2px}.up{color:var(--status-success)}.warn{color:var(--status-warning)}.mini-feed{border:1px solid var(--border-default);border-radius:var(--radius-sm);overflow:hidden}.mini-feed-head{font-size:11px;color:var(--text-secondary);font-weight:600;padding:8px 12px;background:var(--surface-subtle);border-bottom:1px solid var(--border-default)}.feed-row{display:flex;align-items:center;gap:8px;padding:7px 12px;font-size:11px;border-bottom:1px solid var(--surface-subtle)}.feed-row:last-child{border-bottom:none}.feed-row .fdot{width:6px;height:6px;border-radius:50%;flex:none}.feed-row .fnode{font-family:var(--font-mono);color:var(--text-secondary);min-width:66px}.feed-row .ftime{margin-left:auto;color:var(--text-tertiary);font-family:var(--font-mono);font-size:10px}.section{max-width:1200px;margin:0 auto;padding:72px 24px}.section-head{max-width:560px;margin-bottom:44px}.kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:14px;letter-spacing:.02em}.kicker:before{content:"";width:16px;height:2px;background:var(--surface-dark);border-radius:1px}.section-head h2{font-size:32px;font-weight:700;letter-spacing:-.02em;line-height:1.25;margin-bottom:12px}.section-head p{font-size:15px;color:var(--text-secondary)}.section--tight{padding-top:0}.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.cap-card{background:var(--surface-card);border:1px solid var(--border-default);border-radius:var(--radius-md);padding:24px;transition:all .2s ease;position:relative}.cap-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-md);transform:translateY(-2px)}.cap-icon{width:40px;height:40px;border-radius:var(--radius-icon);background:var(--surface-subtle);border:1px solid var(--border-default);display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--text-primary)}.cap-card h3{font-size:15px;font-weight:600;margin-bottom:6px;display:flex;align-items:center;gap:8px}.cap-card h3 .status-dot{width:6px;height:6px;border-radius:50%}.cap-card p{font-size:13px;color:var(--text-tertiary);line-height:1.65}.cap-card .cap-more{display:inline-flex;align-items:center;gap:4px;font-size:13px;color:var(--text-secondary);margin-top:14px;font-weight:500}.cap-card:hover .cap-more{color:var(--text-primary)}.eco-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.eco-card{background:var(--surface-card);border:1px solid var(--border-default);border-radius:var(--radius-lg);padding:28px;display:flex;flex-direction:column;transition:all .2s ease}.eco-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-md)}.eco-tag{align-self:flex-start;font-size:11px;font-weight:600;font-family:var(--font-mono);border:1px solid var(--border-default);color:var(--text-tertiary);padding:3px 10px;border-radius:999px;margin-bottom:16px;background:var(--surface-subtle)}.eco-card h3{font-size:19px;font-weight:700;letter-spacing:-.01em;margin-bottom:6px}.eco-card .eco-sub{font-size:13px;color:var(--text-tertiary);margin-bottom:20px}.eco-list{list-style:none;display:flex;flex-direction:column;gap:10px;margin-bottom:24px}.eco-list li{display:flex;gap:10px;font-size:13.5px;color:var(--text-secondary);align-items:flex-start}.eco-list svg{flex:none;margin-top:3px}.eco-preview{margin-top:auto;background:var(--surface-subtle);border:1px solid var(--border-default);border-radius:var(--radius-sm);padding:14px;display:flex;gap:10px;align-items:center;justify-content:center;min-height:96px}.phone{width:78px;height:130px;background:var(--surface-card);border:1px solid var(--border-strong);border-radius:12px;padding:8px;display:flex;flex-direction:column;gap:6px;box-shadow:var(--shadow-sm);flex:none}.phone .p-bar{height:14px;border-radius:4px;background:var(--surface-dark)}.phone.light .p-bar{background:var(--surface-sunken)}.phone .p-row{height:10px;border-radius:4px;background:var(--surface-sunken)}.phone .p-row.short{width:60%}.phone .p-block{flex:1;border-radius:6px;background:var(--surface-subtle);border:1px solid var(--border-default)}.win{flex:1;height:130px;background:var(--surface-card);border:1px solid var(--border-strong);border-radius:10px;padding:10px;box-shadow:var(--shadow-sm);display:grid;grid-template-columns:30px 1fr;gap:8px;overflow:hidden}.win .w-side{background:var(--surface-dark);border-radius:6px;display:flex;flex-direction:column;gap:5px;padding:6px 5px}.win .w-side i{display:block;height:5px;border-radius:2px;background:#ffffff38}.win .w-side i:first-child{background:#ffffff8c}.win .w-main{display:flex;flex-direction:column;gap:7px}.win .w-chips{display:grid;grid-template-columns:repeat(3,1fr);gap:5px}.win .w-chip{height:22px;background:var(--surface-subtle);border:1px solid var(--border-default);border-radius:4px}.win .w-table{flex:1;background:var(--surface-subtle);border:1px solid var(--border-default);border-radius:6px}.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.scene-card{border:1px solid var(--border-default);border-radius:var(--radius-lg);background:var(--surface-card);padding:28px;transition:all .2s ease}.scene-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-md);transform:translateY(-2px)}.scene-icon{width:44px;height:44px;border-radius:var(--radius-icon);background:var(--surface-dark);display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:18px}.scene-card h3{font-size:17px;font-weight:700;margin-bottom:8px}.scene-card p{font-size:13.5px;color:var(--text-tertiary);margin-bottom:18px}.scene-tags{display:flex;flex-wrap:wrap;gap:6px}.scene-tag{font-size:12px;color:var(--text-secondary);background:var(--surface-subtle);border:1px solid var(--border-default);border-radius:999px;padding:4px 12px}.cta-card{background:var(--surface-card);border:1px solid var(--border-default);border-radius:var(--radius-lg);padding:56px 48px;display:flex;align-items:center;justify-content:space-between;gap:40px;box-shadow:var(--shadow-sm)}.cta-card h2{font-size:28px;font-weight:700;letter-spacing:-.02em;margin-bottom:10px}.cta-card p{font-size:15px;color:var(--text-secondary)}.cta-actions{display:flex;gap:12px;flex:none}.footer{border-top:1px solid var(--border-default);background:var(--surface-card)}.footer-bottom{max-width:1200px;margin:0 auto;padding:20px 24px 40px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--text-disabled)}.footer-bottom .legal{display:flex;gap:16px;flex-wrap:wrap}.footer-bottom .legal a.beian{display:inline-flex;align-items:center;gap:4px}.footer-bottom .legal a.beian img{width:14px;height:14px;flex:none}@media (max-width: 1024px){.cap-grid{grid-template-columns:repeat(2,1fr)}.eco-grid,.scene-grid,.hero-inner{grid-template-columns:1fr}.hero h1{font-size:36px}}@media (max-width: 768px){.nav-inner{gap:12px}.nav-brand .brand-sub{display:none}.nav-menu{display:none;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;gap:2px;padding:12px 24px 20px;background:#fffffffa;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-default);box-shadow:var(--shadow-md);flex:none}.nav-menu.open{display:flex}.nav-menu a{padding:12px 14px;font-size:15px}.nav-toggle{display:inline-flex;margin-left:auto}.nav-actions{display:none}.nav-menu .mobile-actions{display:flex;flex-direction:column;gap:10px;margin-top:12px}.nav-menu .mobile-actions .btn{height:44px;width:100%}.mini-stats{grid-template-columns:repeat(2,1fr)}.cta-card{flex-direction:column;align-items:flex-start;padding:40px 28px}.cta-actions{width:100%;flex-direction:column}.cta-actions .btn{width:100%}.hero{padding-top:48px}.hero h1{font-size:30px}.hero-cta{flex-direction:column}.hero-cta .btn{width:100%}.section{padding:48px 24px}.cap-grid{grid-template-columns:1fr}}@media (max-width: 480px){.footer-bottom{flex-direction:column;align-items:flex-start}}@media (min-width: 769px){.nav-menu .mobile-actions{display:none}}.demo-main{max-width:560px;margin:0 auto;padding:64px 24px 88px}.demo-card{background:var(--surface-card);border:1px solid var(--border-default);border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow-md)}.demo-head{margin-bottom:28px}.demo-head h1{font-size:26px;font-weight:700;letter-spacing:-.02em;line-height:1.3;margin-bottom:10px}.demo-head p{font-size:14px;color:var(--text-secondary)}.demo-form{display:flex;flex-direction:column;gap:20px}.field{display:flex;flex-direction:column;gap:8px}.field label{font-size:13.5px;font-weight:600;color:var(--text-primary)}.field .req{color:var(--status-error)}.field input{font-family:inherit;font-size:14px;color:var(--text-primary);height:44px;padding:0 14px;border-radius:var(--radius-sm);border:1px solid var(--border-strong);background:var(--surface-card);transition:border-color .15s ease,box-shadow .15s ease}.field input::placeholder{color:var(--text-disabled)}.field input:focus{outline:none;border-color:var(--surface-dark);box-shadow:0 0 0 3px #0f172a14}.field--error input{border-color:var(--status-error)}.field--error input:focus{box-shadow:0 0 0 3px #dc26261f}.field-err{font-size:12.5px;color:var(--status-error)}.form-alert{font-size:13px;color:var(--status-error);background:#dc26260f;border:1px solid rgba(220,38,38,.25);border-radius:var(--radius-sm);padding:10px 14px}.demo-submit{width:100%;margin-top:4px}.demo-submit:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}.demo-privacy{font-size:12px;color:var(--text-tertiary);text-align:center;margin-top:-4px}.demo-success{text-align:center;padding:56px 40px}.demo-success-icon{width:60px;height:60px;border-radius:50%;margin:0 auto 22px;background:#16a34a1a;color:var(--status-success);display:flex;align-items:center;justify-content:center}.demo-success h1{font-size:24px;font-weight:700;letter-spacing:-.02em;margin-bottom:12px}.demo-success p{font-size:14.5px;color:var(--text-secondary);max-width:380px;margin:0 auto 28px}.demo-success-actions{display:flex;gap:12px;justify-content:center}@media (max-width: 560px){.demo-main{padding:40px 16px 64px}.demo-card{padding:28px 22px}.demo-success-actions{flex-direction:column}.demo-success-actions .btn{width:100%}}