:root{--bg:#f2f0eb;--text-main:#1c1a19;--text-sub:#1c1a1999;--card-bg:#fff;--card-border:#1c1a191a;--card-soft-bg:#1c1a190a;--card-soft-border:#1c1a1914;--btn-bg:#355041;--btn-text:#fff;--btn-ghost-bg:#1c1a1914;--btn-ghost-border:transparent;--btn-ghost-text:#1c1a19;--accent-orange:#ff5a00;--font-family:-apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", sans-serif;--font-serif:"Songti SC", "Noto Serif CJK SC", "SimSun", serif;--max-width:1000px}*{box-sizing:border-box}html,body,#app{background:var(--bg);min-height:100vh;color:var(--text-main);font-family:var(--font-family);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;padding:0}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none;outline:none;font-family:inherit;transition:all .2s}button:disabled{opacity:.5;cursor:not-allowed}.serif{font-family:var(--font-serif)}.shell{flex-direction:column;min-height:100vh;display:flex}.topbar{max-width:var(--max-width);justify-content:space-between;align-items:center;width:100%;margin:0 auto;padding:24px 40px;display:flex}.brand-lockup{cursor:pointer;align-items:center;gap:16px;display:flex}.brand-logo{background:0 0;border-radius:8px;width:48px;height:48px;padding:0}.brand-title{letter-spacing:.5px;margin:0;font-size:24px;font-weight:800}.topbar-actions{align-items:center;gap:12px;display:flex}.page{max-width:var(--max-width);flex:1;width:100%;margin:0 auto;padding:20px 24px 60px}.title-lg{font-family:var(--font-serif);letter-spacing:2px;margin:0 0 16px;font-size:clamp(48px,10vw,88px);font-weight:900;line-height:1.1}.title{font-family:var(--font-serif);letter-spacing:1px;margin:0 0 12px;font-size:28px;font-weight:700}.sub{color:var(--text-sub);margin:0 0 32px;font-size:16px;line-height:1.6}.meta{color:var(--text-sub);letter-spacing:.5px;margin:0;font-size:13px}.card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:12px;padding:32px;transition:all .2s;position:relative;box-shadow:0 4px 20px #00000005}.card:hover{transform:translateY(-2px);box-shadow:0 8px 30px #0000000a}.card-soft{background:var(--card-soft-bg);border:1px solid var(--card-soft-border);border-radius:20px;padding:24px}.pill{color:#1c1a19cc;letter-spacing:.5px;background:#1c1a190f;border-radius:999px;padding:6px 16px;font-size:13px;font-weight:600}.btn-primary{background:var(--btn-bg);height:48px;color:var(--btn-text);letter-spacing:1px;border-radius:999px;justify-content:center;align-items:center;padding:0 32px;font-size:15px;font-weight:600;display:inline-flex}.btn-primary:hover{opacity:.9;transform:translateY(-1px)}.btn-ghost{background:var(--btn-ghost-bg);height:40px;color:var(--btn-ghost-text);border:none;border-radius:999px;justify-content:center;align-items:center;padding:0 20px;font-size:14px;font-weight:600;display:inline-flex}.btn-ghost:hover{background:#1c1a191f}.grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;display:grid}.qr-container{flex-direction:column;justify-content:center;align-items:center;gap:24px;margin:60px 0;display:flex}.qr-box{border:1px solid var(--card-border);background:#fff;border-radius:12px;justify-content:center;align-items:center;width:260px;height:260px;padding:24px;display:flex;position:relative;box-shadow:0 12px 40px #0000000f}.qr-box:before{content:"";border:1px dashed var(--card-border);pointer-events:none;position:absolute;inset:12px}.qr-box 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4px;display:flex}.photo-title{white-space:nowrap;text-overflow:ellipsis;font-size:15px;font-weight:600;font-family:var(--font-serif);margin:0;overflow:hidden}.photo-meta{justify-content:space-between;align-items:center;display:flex}.state-box{text-align:center;color:var(--text-sub);font-family:var(--font-serif);padding:100px 20px;font-size:18px}.error-box{color:#d32f2f;text-align:center;background:#fff0f0;border-radius:16px;margin-bottom:24px;padding:16px 24px;font-weight:500}.landing-hero{flex-direction:row;justify-content:space-between;align-items:center;gap:40px;padding:80px 0 100px;display:flex;position:relative}.hero-content{flex:1;max-width:600px;position:relative}.hero-vertical-banner{writing-mode:vertical-rl;border-left:2px solid var(--accent-orange);color:var(--accent-orange);letter-spacing:4px;gap:16px;padding-left:16px;font-size:16px;display:flex;position:relative}.hero-vertical-banner span{opacity:.8}.hero-title-main{letter-spacing:2px;color:var(--text-main);margin:0 0 32px;font-size:clamp(56px,12vw,110px);font-weight:900;line-height:1.05}.hero-subtitle-main{color:var(--text-sub);max-width:500px;margin:0 0 48px;font-size:clamp(16px,3vw,20px);line-height:1.8}.hero-actions{align-items:center;gap:16px;display:flex}.download-details{position:relative}.download-details summary{list-style:none}.download-details summary::-webkit-details-marker{display:none}.download-menu{background:var(--card-bg);border:1px solid var(--card-border);z-index:20;border-radius:14px;flex-direction:column;gap:8px;min-width:320px;padding:10px;display:flex;position:absolute;top:calc(100% + 10px);left:0;box-shadow:0 12px 28px #00000014}.download-option{color:var(--text-main);background:var(--card-soft-bg);border:1px solid #0000;border-radius:10px;align-items:center;gap:10px;padding:10px 12px;font-size:14px;transition:background .2s,border-color 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var(--text-main);box-shadow:none;background:0 0;border-radius:0;padding:32px 0;transition:opacity .3s}.feature-card:hover{opacity:.8}.feature-tag{color:var(--accent-orange);letter-spacing:1px;text-transform:uppercase;margin-bottom:16px;font-size:12px;font-weight:700;display:block}.feature-title{font-size:24px;font-weight:700;font-family:var(--font-serif);margin:0 0 16px}.feature-desc{color:var(--text-sub);margin:0;font-size:15px;line-height:1.7}.step-cards{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px;display:grid}.step-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:12px;padding:32px 24px;transition:transform .2s,box-shadow .2s;position:relative;overflow:hidden;box-shadow:0 4px 20px #00000005}.step-card:hover{transform:translateY(-2px);box-shadow:0 8px 30px 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p{color:var(--text-sub);margin:0;font-size:15px;line-height:1.6}.landing-footer{text-align:center;color:var(--text-sub);letter-spacing:1px;border-top:1px solid #1c1a1914;margin-top:80px;padding:60px 20px 40px;font-size:13px}@keyframes fadeUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fade-up{animation:.8s cubic-bezier(.16,1,.3,1) forwards fadeUp}.delay-1{animation-delay:.1s}.delay-2{animation-delay:.2s}.delay-3{animation-delay:.3s}.delay-4{animation-delay:.4s}