:root{color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,Microsoft YaHei,PingFang SC,system-ui,sans-serif;background:var(--promo-bg);color:var(--promo-text)}a{color:inherit;text-decoration:none}button,input{font:inherit}button{border:0;cursor:pointer}img{display:block;max-width:100%}.promo-site{min-height:100vh;background:radial-gradient(1200px 560px at 18% 0%,color-mix(in srgb,var(--promo-accent) 18%,transparent),transparent 68%),linear-gradient(180deg,var(--promo-bg),var(--promo-bg-alt));color:var(--promo-text)}.wrap{width:min(1180px,calc(100% - 32px));margin:0 auto}.topbar{position:sticky;top:0;z-index:10;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:color-mix(in srgb,var(--promo-bg) 90%,transparent);border-bottom:1px solid var(--promo-border)}.topbar-inner{min-height:72px;display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:20px;align-items:center}.brand{display:flex;align-items:center;gap:14px;min-width:0}.brand-mark{width:136px;height:48px;border-radius:8px;overflow:hidden;border:1px solid var(--promo-border);background:#fff;flex:0 0 auto;padding:5px 8px}.brand-mark img{width:100%;height:100%;object-fit:contain}.brand strong{display:block;font-size:16px}.brand span{display:block;font-size:12px;color:var(--promo-muted)}.topnav{display:flex;gap:20px;color:var(--promo-muted);font-size:14px}.topnav button{padding:0;border:0;background:transparent;color:inherit}.topnav a:hover,.topnav button:hover{color:var(--promo-text)}.topbar-actions{display:flex;gap:10px}.hero,.band{padding:72px 0}.hero-grid,.section-grid{display:grid;gap:24px;align-items:start}.hero-grid{grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr)}.hero-copy h1{margin:12px 0 14px;font-size:clamp(38px,5vw,64px);line-height:1.04;letter-spacing:0}.hero-copy p,.section-copy p,.feature-card p,.panel p,.download-panel p,.policy-content p,.support-note span,.session-card p{color:var(--promo-muted);line-height:1.7}.hero-tag,.section-kicker,.mini-label{display:inline-flex;align-items:center;min-height:26px;padding:0 10px;border:1px solid color-mix(in srgb,var(--promo-accent) 35%,var(--promo-border));border-radius:999px;background:var(--promo-accent-soft);color:var(--promo-accent-text);font-size:12px;letter-spacing:0}.hero-points,.inline-points{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0}.hero-points span,.inline-points span{display:inline-flex;align-items:center;min-height:32px;padding:0 12px;border:1px solid var(--promo-border);border-radius:999px;color:var(--promo-muted);background:color-mix(in srgb,var(--promo-surface) 74%,transparent);font-size:13px}.hero-actions,.session-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:28px}.hero-stats div,.feature-card,.package-card,.panel,.modal-card,.footer-grid>div,.support-note,.order-row{border:1px solid var(--promo-border);background:color-mix(in srgb,var(--promo-surface) 82%,transparent);box-shadow:0 18px 48px #00000024}.hero-stats div{border-radius:16px;padding:16px}.hero-stats strong{display:block;font-size:18px;margin-bottom:4px}.hero-stats span{display:block;font-size:13px;color:var(--promo-muted)}.hero-panel{display:grid;gap:18px}.hero-image-frame{border-radius:24px;padding:22px;border:1px solid var(--promo-border);background:linear-gradient(160deg,color-mix(in srgb,var(--promo-accent) 14%,transparent),transparent 66%),color-mix(in srgb,#fff 92%,var(--promo-surface));min-height:320px;display:grid;place-items:center}.hero-image-frame img{width:min(520px,92%);max-height:260px;object-fit:contain;border-radius:12px}.hero-panel-card{border-radius:20px;padding:18px;border:1px solid var(--promo-border);background:color-mix(in srgb,var(--promo-surface-strong) 88%,transparent);display:grid;gap:8px}.hero-panel-card strong{font-size:14px;word-break:break-all}.band.alt{background:color-mix(in srgb,var(--promo-surface) 62%,transparent)}.section-grid{grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);align-items:stretch}.section-head{margin-bottom:24px}.section-head.split{display:flex;justify-content:space-between;gap:16px;align-items:end}.section-head h2,.section-copy h2{margin:10px 0 0;font-size:clamp(28px,3vw,42px);line-height:1.12}.panel,.feature-card,.package-card,.modal-card{border-radius:20px}.panel{padding:22px}.login-panel label,.login-panel input{display:block;width:100%}.login-panel{padding:18px 20px 20px;max-height:calc(100vh - 168px);overflow:auto}.login-panel label{margin-bottom:12px;color:color-mix(in srgb,var(--promo-text) 88%,var(--promo-muted));font-size:14px;font-weight:600}.login-panel input{margin-top:8px;min-height:44px;padding:0 14px;border-radius:12px;border:1px solid var(--promo-border);background:color-mix(in srgb,var(--promo-bg) 74%,#fff);color:var(--promo-text);outline:none}.login-panel input:focus{border-color:var(--promo-accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--promo-accent) 18%,transparent)}.mode-tabs{display:flex;gap:8px;padding:6px;border-radius:14px;border:1px solid var(--promo-border);background:color-mix(in srgb,var(--promo-surface) 80%,transparent);margin-bottom:14px}.mode-tabs button{flex:1;min-height:34px;padding:0 14px;border-radius:10px;background:transparent;color:var(--promo-muted)}.mode-tabs button.active{background:var(--promo-accent);color:var(--promo-accent-text)}.code-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px}.consents{display:grid;gap:10px;margin:14px 0 16px;padding:12px 14px;border-radius:16px;border:1px solid color-mix(in srgb,var(--promo-border) 70%,transparent);background:color-mix(in srgb,var(--promo-bg) 48%,transparent)}.login-panel .consent-row{display:grid;grid-template-columns:16px minmax(0,1fr);align-items:center;column-gap:10px;color:var(--promo-muted);line-height:1.6}.login-panel .consent-row input[type=checkbox]{display:inline-block;width:16px;height:16px;min-height:auto;margin:0;padding:0;border-radius:3px;background:transparent;accent-color:var(--promo-accent)}.consent-copy{display:inline-flex;flex-wrap:wrap;align-items:center;column-gap:6px;row-gap:0;font-weight:400}.consent-copy button{padding:0;background:transparent;color:color-mix(in srgb,var(--promo-accent) 82%,#fff);white-space:nowrap}.consent-copy button:hover{text-decoration:underline}.primary-button,.secondary-button,.ghost-button,.text-button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 16px;border-radius:14px;transition:transform .15s ease,opacity .15s ease,background .15s ease}.primary-button{background:var(--promo-accent);color:var(--promo-accent-text)}.secondary-button{background:color-mix(in srgb,var(--promo-surface) 68%,transparent);color:var(--promo-text);border:1px solid var(--promo-border)}.ghost-button,.text-button{background:transparent;border:1px solid var(--promo-border);color:var(--promo-text)}.text-button{border:0;color:var(--promo-muted);padding-inline:0}.primary-button:hover,.secondary-button:hover,.ghost-button:hover,.text-button:hover{transform:translateY(-1px)}.primary-button:disabled,.secondary-button:disabled,.ghost-button:disabled{opacity:.55;cursor:not-allowed}.wide{width:100%}.form-note{margin-top:14px;min-height:20px;color:var(--promo-muted);font-size:13px;text-align:center}.feature-grid,.workflow-grid,.package-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.workflow-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.feature-card,.package-card{padding:20px;border-radius:18px}.package-card{position:relative;overflow:hidden;display:flex;flex-direction:column;min-height:310px;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.package-card:before{content:"";position:absolute;inset:0 0 auto;height:4px;background:linear-gradient(90deg,var(--promo-accent),color-mix(in srgb,var(--promo-accent) 34%,transparent))}.package-card:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--promo-accent) 48%,var(--promo-border));box-shadow:0 24px 60px #0003}.feature-card h3,.package-card h3,.download-panel h3,.session-card h3,.modal-card h3{margin:10px 0 8px;font-size:20px;line-height:1.2}.package-card p{min-height:66px}.package-card .wide{margin-top:auto}.price{margin:14px 0 10px;font-size:32px;font-weight:700;color:var(--promo-accent-text)}.package-meta,.kv{display:grid;gap:10px;margin:14px 0 18px}.package-meta{grid-template-columns:repeat(2,minmax(0,1fr))}.kv{grid-template-columns:repeat(3,minmax(0,1fr))}.package-meta span,.kv div{padding:12px 14px;border-radius:14px;border:1px solid var(--promo-border);background:var(--promo-bg)}.package-meta span{color:var(--promo-muted)}.package-card 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span,.footer-bottom{color:var(--promo-muted);font-size:13px}.footer-brand strong{font-size:18px}.footer-links{display:flex;flex-wrap:wrap;gap:10px}.footer-links button{min-height:34px;padding:0 12px;border-radius:999px;border:1px solid color-mix(in srgb,var(--promo-accent) 34%,var(--promo-border));background:color-mix(in srgb,var(--promo-accent) 10%,transparent);color:var(--promo-accent-text)}.footer-links button:hover{background:color-mix(in srgb,var(--promo-accent) 18%,transparent);color:var(--promo-accent-text)}.footer-bottom{display:flex;justify-content:center;gap:14px;margin-top:18px;flex-wrap:wrap}.footer-filings{display:inline-flex;flex-wrap:wrap;gap:12px;word-break:break-all}.empty-state{min-height:140px;border:1px dashed var(--promo-border);border-radius:18px;display:grid;place-items:center;color:var(--promo-muted);text-align:center;padding:20px}.release-status{display:grid;gap:8px;min-height:120px;align-content:center;padding:18px;border:1px solid var(--promo-border);border-radius:12px;background:color-mix(in srgb,var(--promo-surface) 86%,transparent);color:var(--promo-muted)}.release-status strong{color:var(--promo-text);font-size:18px}.modal-backdrop{position:fixed;inset:0;z-index:30;background:#040a14bd;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:grid;place-items:center;padding:20px}.modal-card{width:min(720px,100%);padding:20px}.login-modal{width:min(520px,100%);max-height:calc(100vh - 40px);padding:0;overflow:hidden;border-radius:22px}.modal-head{display:flex;justify-content:space-between;gap:16px;align-items:start;margin-bottom:14px}.login-modal .modal-head{margin:0;padding:18px 20px;background:linear-gradient(135deg,color-mix(in srgb,var(--promo-accent) 16%,transparent),transparent 70%),color-mix(in srgb,var(--promo-surface-strong) 92%,var(--promo-bg));border-bottom:1px solid var(--promo-border)}.modal-head p{margin:8px 0 0;color:var(--promo-muted);line-height:1.6;font-size:13px}.modal-close{width:36px;height:36px;border-radius:999px;border:1px solid var(--promo-border);background:color-mix(in srgb,var(--promo-surface) 72%,transparent);color:var(--promo-text);font-size:22px;line-height:1}.modal-close:hover{background:color-mix(in srgb,var(--promo-accent) 16%,var(--promo-surface))}.policy-content{max-height:min(60vh,520px);overflow:auto;padding-right:6px}.payment-body{display:grid;grid-template-columns:260px minmax(0,1fr);gap:18px;align-items:center}.qr-box{min-height:260px;border-radius:18px;border:1px solid var(--promo-border);background:var(--promo-bg);display:grid;place-items:center;padding:14px}.qr-box img{width:100%;max-width:240px}@media(max-width:1080px){.hero-grid,.section-grid,.payment-body{grid-template-columns:1fr}.feature-grid,.workflow-grid,.package-grid,.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.kv{grid-template-columns:1fr}}@media(max-width:820px){.topbar-inner{grid-template-columns:1fr;justify-items:start;padding-block:12px}.topnav{flex-wrap:wrap;gap:12px}.hero,.band{padding:52px 0}.hero-stats,.feature-grid,.workflow-grid,.package-grid,.footer-grid{grid-template-columns:1fr}.section-head.split{flex-direction:column;align-items:start}.order-row{grid-template-columns:1fr}}