:root{--bg-primary: #faf9f5;--bg-card: #ffffff;--bg-surface: #f5f0e8;--bg-dark: #181715;--bg-dark-elevated: #252320;--accent: #cc785c;--accent-hover: #a9583e;--accent-light: #f0e2db;--ink: #141413;--body: #3d3d3a;--muted: #6c6a64;--muted-soft: #8e8b82;--hairline: #e6dfd8;--success: #5db872;--warning: #d4a017;--error: #c64545;--shadow-sm: 0px 0px 0px 1px rgba(0,0,0,.06), 0px 1px 2px rgba(0,0,0,.04);--shadow-md: 0px 0px 0px 1px rgba(0,0,0,.06), 0px 4px 12px rgba(0,0,0,.06);--shadow-lg: 0px 0px 0px 1px rgba(0,0,0,.06), 0px 8px 24px rgba(0,0,0,.08);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Helvetica Neue", sans-serif;--safe-bottom: env(safe-area-inset-bottom, 0px)}*{margin:0;padding:0;box-sizing:border-box}-webkit-tap-highlight-color: transparent; body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--ink);min-height:100vh;-webkit-font-smoothing:antialiased;overflow-x:hidden}.svg-icon{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}.svg-icon svg{width:100%;height:100%}.app-container{max-width:430px;margin:0 auto;min-height:100vh;background:var(--bg-primary);position:relative;overflow:hidden;box-shadow:0 0 0 1px #0000000a}.status-bar{display:flex;justify-content:space-between;align-items:center;padding:10px 20px 6px;font-size:12px;color:var(--muted);background:var(--bg-primary)}.status-bar .time{font-weight:600}.status-icons{display:flex;gap:4px;align-items:center}.nav-bar{display:flex;align-items:center;justify-content:space-between;padding:8px 20px 12px;background:var(--bg-primary)}.nav-title{font-size:18px;font-weight:700;letter-spacing:-.3px;color:var(--ink);display:flex;align-items:center;gap:8px}.nav-title .logo-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block}.nav-title .nav-sub{font-size:12px;font-weight:400;color:var(--muted-soft);margin-left:4px}.nav-actions{display:flex;gap:12px;align-items:center}.nav-btn{width:36px;height:36px;border-radius:50%;border:none;background:var(--bg-surface);color:var(--muted);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s;position:relative}.nav-btn:active{transform:scale(.92);background:var(--hairline)}.nav-btn .badge{position:absolute;top:-2px;right:-2px;width:16px;height:16px;background:var(--error);color:#fff;font-size:9px;border-radius:50%;display:flex;align-items:center;justify-content:center}.avatar-btn{width:32px;height:32px;border-radius:50%;border:1.5px solid var(--hairline);background:var(--bg-surface);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s;overflow:hidden;color:var(--muted)}.avatar-btn.logged-in{background:var(--accent-light);color:var(--accent)}.credit-bar{display:flex;align-items:center;justify-content:space-between;margin:0 20px 16px;padding:10px 14px;background:var(--bg-dark);border-radius:var(--radius-md);color:#faf9f5;animation:fadeIn .3s ease}.credit-left{display:flex;align-items:center;gap:8px;font-size:13px}.credit-left .count{font-size:16px;font-weight:700;color:#fff}.credit-btn{padding:5px 14px;border-radius:9999px;border:none;background:var(--accent);color:#fff;font-size:12px;font-weight:600;cursor:pointer;transition:all .2s}.credit-btn:active{transform:scale(.95);background:var(--accent-hover)}.page{display:none;padding:0 20px 100px}.page.active{display:block}.page-enter{animation:pageIn .3s ease}@keyframes pageIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.page-header{display:flex;align-items:center;justify-content:space-between;padding:8px 0 16px}.page-header h2{font-size:20px;font-weight:700;letter-spacing:-.3px}.page-header .page-action{font-size:13px;color:var(--accent);font-weight:500;cursor:pointer;background:none;border:none;font-family:var(--font-sans)}.card{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden}.hero{text-align:center;padding:8px 0 20px}.hero-tag{display:inline-flex;align-items:center;gap:5px;padding:4px 12px;background:var(--accent-light);color:var(--accent-hover);font-size:11px;font-weight:600;border-radius:9999px;margin-bottom:12px;letter-spacing:.3px}.hero h1{font-size:26px;font-weight:700;letter-spacing:-.5px;line-height:1.2;margin-bottom:8px}.hero h1 .highlight{color:var(--accent);position:relative}.hero p{font-size:14px;color:var(--muted);line-height:1.5;max-width:320px;margin:0 auto}.steps{display:flex;justify-content:center;gap:8px;margin:16px 0 20px}.step-item{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--muted-soft);transition:all 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.25s;background:var(--bg-card);overflow:hidden}.upload-zone:active{transform:scale(.98)}.upload-zone.has-file{border-style:solid;border-color:var(--success);padding:12px 16px}.upload-zone .upload-icon{width:48px;height:48px;border-radius:var(--radius-md);background:var(--bg-surface);display:flex;align-items:center;justify-content:center;margin:0 auto 12px;color:var(--muted);transition:all .3s}.upload-zone.has-file .upload-icon{width:40px;height:40px;margin:0 12px 0 0}.upload-zone .upload-text{font-size:14px;font-weight:500;color:var(--ink)}.upload-zone .upload-hint{font-size:11px;color:var(--muted-soft);margin-top:4px}.upload-zone .file-info{display:none;align-items:center;gap:12px;text-align:left}.upload-zone.has-file .file-info{display:flex}.upload-zone.has-file 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18px;border-radius:var(--radius-sm);border:none;background:var(--accent);color:#fff;font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap;transition:all .2s}.url-confirm-btn:active{transform:scale(.95)}.url-confirm-btn:disabled{opacity:.5;cursor:not-allowed}.video-preview{margin-top:12px;border-radius:var(--radius-md);overflow:hidden;position:relative;background:var(--bg-dark)}.video-preview video,.video-preview iframe{width:100%;aspect-ratio:16/9;display:block;border:none}.video-info-row{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;font-size:12px;color:var(--muted-soft)}.image-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.image-slot{aspect-ratio:1;border-radius:var(--radius-md);border:1.5px dashed var(--hairline);display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;transition:all 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var(--hairline);background:var(--bg-card);font-size:12px;font-weight:500;color:var(--muted);text-align:center;cursor:pointer;transition:all .2s;flex:none}.param-option.selected{border-color:var(--accent);color:var(--accent);background:var(--accent-light)}.param-option:active{transform:scale(.95)}.param-input{width:100%;padding:10px 12px;border-radius:var(--radius-sm);border:1.5px solid var(--hairline);background:var(--bg-card);font-size:13px;color:var(--ink);outline:none;transition:all .2s;font-family:var(--font-sans)}.param-input:focus{border-color:var(--accent);box-shadow:0 0 0 2px #cc785c26}.param-input::placeholder{color:var(--muted-soft)}.generate-btn-wrap{margin-top:24px}.generate-btn{width:100%;padding:16px;border-radius:var(--radius-md);border:none;background:linear-gradient(135deg,var(--accent),#c06a4e);color:#fff;font-size:16px;font-weight:700;cursor:pointer;transition:all .3s;position:relative;overflow:hidden;letter-spacing:.5px;display:flex;align-items:center;justify-content:center}.generate-btn:active{transform:scale(.98)}.generate-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.generate-btn .btn-bg-shine{position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.15),transparent);animation:shine 3s ease-in-out infinite}@keyframes shine{0%{left:-100%}50%{left:100%}to{left:100%}}.generate-btn .btn-content{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;gap:8px}.generate-btn .btn-content .svg-icon{width:18px;height:18px}.generate-btn .cost-hint{font-size:12px;font-weight:400;opacity:.85;display:inline-flex;align-items:center;gap:4px}.generate-btn.login-required{background:linear-gradient(135deg,var(--bg-dark),var(--bg-dark-elevated))}.result-card{display:none;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);margin-top:20px;background:var(--bg-card)}.result-card.show{display:block}.result-video{width:100%;aspect-ratio:16/9;background:var(--bg-dark);display:flex;align-items:center;justify-content:center;position:relative}.result-video video{width:100%;height:100%;object-fit:contain}.result-video .play-btn{width:56px;height:56px;border-radius:50%;background:#fff3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:2px solid rgba(255,255,255,.3);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer}.result-info{padding:16px;display:flex;justify-content:space-between;align-items:center}.result-stats{font-size:12px;color:var(--muted)}.result-stats strong{color:var(--ink)}.result-actions{display:flex;gap:8px}.result-btn{padding:8px 16px;border-radius:9999px;border:1.5px solid var(--hairline);background:var(--bg-card);font-size:12px;font-weight:600;cursor:pointer;transition:all .2s;color:var(--body);display:inline-flex;align-items:center;gap:5px}.result-btn:active{transform:scale(.95)}.result-btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.history-list{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:4px 0}.history-item{display:flex;gap:14px;padding:16px 18px;border-bottom:1px solid var(--hairline);transition:all .2s;cursor:pointer;position:relative}.history-item:last-child{border-bottom:none}.history-item:active{background:var(--bg-surface)}.history-thumb{width:80px;height:80px;border-radius:var(--radius-md);flex-shrink:0;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.history-thumb .thumb-bg{position:absolute;top:0;left:0;right:0;bottom:0}.history-thumb .thumb-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:#00000026;display:flex;align-items:center;justify-content:center}.history-thumb .thumb-overlay .play-indicator{width:28px;height:28px;border-radius:50%;background:#ffffff40;display:flex;align-items:center;justify-content:center;color:#fff}.history-info{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:center;padding-right:4px}.history-info h4{font-size:14px;font-weight:600;margin-bottom:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;line-height:1.3}.history-info .history-meta{font-size:11px;color:var(--muted-soft);display:flex;gap:6px;align-items:center;flex-wrap:wrap}.history-right{display:flex;flex-direction:column;align-items:flex-end;justify-content:center;gap:8px;flex-shrink:0;padding-right:12px}.status-badge{font-size:10px;font-weight:600;padding:3px 10px;border-radius:9999px;letter-spacing:.2px}.status-badge.done{background:#e8f5e9;color:#2e7d32}.status-badge.processing{background:#fff3e0;color:#e65100}.status-badge.failed{background:#fbe9e7;color:#c62828}.history-right .h-action{font-size:11px;color:var(--muted-soft)}.history-right .h-action.processing{color:var(--accent);font-weight:500}.filter-tabs{display:flex;gap:6px;margin-bottom:16px}.filter-tab{padding:6px 14px;border-radius:9999px;border:1.5px solid var(--hairline);background:var(--bg-card);font-size:12px;font-weight:500;color:var(--muted);cursor:pointer;transition:all .2s;font-family:var(--font-sans);box-shadow:var(--shadow-sm)}.filter-tab.active{border-color:var(--accent);color:var(--accent);background:var(--accent-light);box-shadow:none}.balance-card{background:linear-gradient(135deg,var(--bg-dark),var(--bg-dark-elevated));border-radius:var(--radius-lg);padding:24px;color:#faf9f5;text-align:center;margin-bottom:20px}.balance-card .balance-label{font-size:12px;color:var(--muted-soft);margin-bottom:8px}.balance-card .balance-amount{font-size:42px;font-weight:800;letter-spacing:-1px;color:#fff}.balance-card .balance-amount .unit{font-size:16px;font-weight:500;color:var(--muted-soft);margin-left:4px}.recharge-section{margin-bottom:24px}.recharge-section h4{font-size:14px;font-weight:600;margin-bottom:12px}.recharge-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.recharge-card{border:1.5px solid var(--hairline);border-radius:var(--radius-md);padding:16px;text-align:center;cursor:pointer;transition:all .2s;background:var(--bg-card)}.recharge-card:active{transform:scale(.97)}.recharge-card .rc-amount{font-size:20px;font-weight:700;color:var(--ink)}.recharge-card .rc-price{font-size:13px;color:var(--accent);font-weight:600;margin-top:4px}.recharge-card .rc-tag{font-size:9px;font-weight:600;color:#fff;background:var(--accent);padding:1px 6px;border-radius:9999px;display:inline-block;margin-top:6px}.rc-original{font-size:11px;color:var(--muted-soft);text-decoration:line-through;margin-top:2px}.recharge-card.popular{border-color:var(--accent);background:var(--accent-light)}.tx-item{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--hairline)}.tx-item:last-child{border-bottom:none}.tx-icon{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}.tx-icon.earn{background:#e8f5e9;color:#2e7d32}.tx-icon.spend{background:#fbe9e7;color:#c62828}.tx-info{flex:1}.tx-info .tx-name{font-size:13px;font-weight:500}.tx-info .tx-date{font-size:11px;color:var(--muted-soft);margin-top:1px}.tx-amount{font-size:14px;font-weight:700}.tx-amount.earn{color:#2e7d32}.tx-amount.spend{color:var(--body)}.profile-header{text-align:center;padding:24px 0 20px}.profile-avatar{width:64px;height:64px;border-radius:50%;background:var(--bg-surface);display:flex;align-items:center;justify-content:center;margin:0 auto 12px;color:var(--muted)}.profile-header h3{font-size:18px;font-weight:700}.profile-header p{font-size:13px;color:var(--muted);margin-top:2px}.profile-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:20px}.profile-stat{background:var(--bg-card);border-radius:var(--radius-md);padding:14px;text-align:center;box-shadow:var(--shadow-sm)}.profile-stat .stat-num{font-size:20px;font-weight:700;color:var(--ink)}.profile-stat .stat-label{font-size:11px;color:var(--muted-soft);margin-top:2px}.menu-item{display:flex;align-items:center;gap:14px;padding:16px 14px;background:var(--bg-card);border-radius:var(--radius-md);margin-bottom:8px;cursor:pointer;transition:all .2s;box-shadow:var(--shadow-sm)}.menu-item:active{transform:scale(.98)}.menu-item .menu-icon{width:36px;height:36px;border-radius:var(--radius-sm);background:var(--bg-surface);display:flex;align-items:center;justify-content:center;color:var(--muted)}.menu-item .menu-text{flex:1;font-size:14px;font-weight:500}.menu-item .menu-arrow{color:var(--muted-soft);font-size:16px;font-weight:300}.menu-item.logout{margin-top:12px;border:1.5px solid #fbe9e7}.menu-item.logout .menu-text{color:var(--error)}.menu-item.logout .menu-icon{background:#fbe9e7;color:var(--error)}.bottom-tab{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:430px;background:#ffffffeb;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--hairline);display:flex;padding:6px 12px calc(6px + var(--safe-bottom));z-index:50}.tab-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px 0;cursor:pointer;color:var(--muted-soft);transition:all .2s;border:none;background:none;font-family:var(--font-sans)}.tab-item.active{color:var(--accent)}.tab-item .tab-icon{width:20px;height:20px}.tab-item .tab-label{font-size:10px;font-weight:500}.modal-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:100;align-items:flex-end;justify-content:center;animation:fadeIn .2s ease}.modal-overlay.show{display:flex}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.modal-content{width:100%;max-width:430px;background:var(--bg-card);border-radius:var(--radius-xl) var(--radius-xl) 0 0;padding:32px 24px calc(32px + var(--safe-bottom));animation:slideUp .3s ease}.modal-handle{width:36px;height:4px;background:var(--hairline);border-radius:2px;margin:-16px auto 20px}.progress-header{text-align:center;margin-bottom:24px}.progress-header h3{font-size:17px;font-weight:700;display:flex;align-items:center;justify-content:center;gap:8px}.progress-header p{font-size:13px;color:var(--muted);margin-top:4px}.progress-bar-track{width:100%;height:6px;background:var(--bg-surface);border-radius:3px;overflow:hidden;margin-bottom:20px}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent),#c06a4e);border-radius:3px;transition:width .5s ease;width:0%}.progress-step{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--hairline);opacity:.4;transition:all .3s}.progress-step:last-child{border-bottom:none}.progress-step.active{opacity:1}.progress-step.done{opacity:.6}.progress-step .step-status{width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;flex-shrink:0}.progress-step.pending .step-status{border:2px solid var(--hairline)}.progress-step.active .step-status{border:2px solid var(--accent)}.progress-step.active 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