:root{--color-bg: #f5f6fa;--color-surface: #ffffff;--color-border: #e2e4ec;--color-text: #1c1e27;--color-text-muted: #6b7280;--color-primary: #6366f1;--color-primary-hover: #4f52e0;--color-danger: #dc2626;--color-success: #16a34a;--radius: 10px;--shadow: 0 1px 3px rgba(15, 15, 35, .08), 0 1px 2px rgba(15, 15, 35, .06);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica Neue,PingFang TC,Microsoft JhengHei,Arial,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--color-bg);color:var(--color-text)}button,input,select,textarea{font-family:inherit;font-size:14px}.app-shell{min-height:100%;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;gap:24px;padding:12px 24px;background:var(--color-surface);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:10}.app-header__brand{font-weight:700;font-size:16px}.app-header__nav{display:flex;gap:16px;flex:1}.app-header__nav a{color:var(--color-text-muted);text-decoration:none;font-weight:500;padding:6px 4px;border-bottom:2px solid transparent}.app-header__nav a.active{color:var(--color-primary);border-bottom-color:var(--color-primary)}.app-header__user{display:flex;align-items:center;gap:12px}.app-header__email{color:var(--color-text-muted);font-size:13px}.credits{display:inline-flex;align-items:baseline;gap:6px;padding:4px 10px;border:1px solid var(--color-border);border-radius:999px;font-size:13px;white-space:nowrap}.credits__label{color:var(--color-text-muted);font-size:12px}.credits__value{font-weight:600;font-variant-numeric:tabular-nums}.credits--low{border-color:var(--color-danger)}.credits--low .credits__value{color:var(--color-danger)}.credits--muted{color:var(--color-text-muted);font-size:12px}@media (max-width: 640px){.app-header__email{display:none}}.app-main{flex:1;padding:24px;max-width:1100px;width:100%;margin:0 auto}.page-center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:9px 18px;border-radius:8px;border:1px solid transparent;font-weight:600;cursor:pointer;transition:background-color .15s ease,opacity .15s 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10px;background:var(--color-surface);color:var(--color-text);width:100%}.input:focus,.select:focus,.textarea:focus{outline:2px solid var(--color-primary);outline-offset:1px}.textarea{resize:vertical;min-height:90px}.hint{color:var(--color-text-muted);font-size:13px}.error-text{color:var(--color-danger);font-size:13px;font-weight:500}.link-button{background:none;border:none;color:var(--color-primary);cursor:pointer;padding:0 0 0 6px;font-size:13px;font-weight:600}.login-card{width:100%;max-width:360px}.login-card h1{margin:0 0 4px;font-size:20px}.login-card .hint{margin:0 0 20px}.tabs{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}.tab{padding:8px 16px;border-radius:999px;border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-muted);cursor:pointer;font-weight:600}.tab--active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.generate-tab{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;align-items:start}@media (max-width: 840px){.generate-tab{grid-template-columns:1fr}}.generate-tab__result{min-height:200px}.model-picker{margin-bottom:16px}.model-picker__meta{display:flex;flex-direction:column;gap:2px;margin-top:6px;font-size:12px;color:var(--color-text-muted)}.model-picker__description{margin:4px 0 0;font-size:12px;line-height:1.5;color:var(--color-text-muted)}.result-outputs{display:flex;flex-direction:column;gap:12px}.result-image{max-width:100%;border-radius:8px;border:1px solid var(--color-border)}.video-player{max-width:100%;border-radius:8px;border:1px solid var(--color-border);background:#000}.dropzone-field{margin-bottom:16px}.dropzone{border:2px dashed var(--color-border);border-radius:var(--radius);padding:24px;text-align:center;color:var(--color-text-muted);cursor:pointer;transition:border-color .15s ease,background-color .15s ease}.dropzone:hover,.dropzone--active{border-color:var(--color-primary);background:#6366f10d}.dropzone p{margin:0;font-size:13px}.dropzone-previews{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.dropzone-preview{position:relative;width:72px;height:72px;border-radius:8px;overflow:hidden;border:1px solid var(--color-border)}.dropzone-preview img{width:100%;height:100%;object-fit:cover;display:block}.dropzone-preview__remove{position:absolute;top:2px;right:2px;width:20px;height:20px;border-radius:50%;border:none;background:#0009;color:#fff;cursor:pointer;line-height:1;font-size:14px}.history-page__summary{display:flex;align-items:baseline;gap:12px;margin-bottom:16px}.history-page__label{color:var(--color-text-muted);font-weight:600}.history-page__total{font-size:24px;font-weight:700;color:var(--color-primary)}.history-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.history-card{padding:0;overflow:hidden;display:flex;flex-direction:column}.history-card__media{aspect-ratio:4 / 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var(--color-border);border-radius:8px;padding:6px}.compare-picker__item{display:flex;align-items:center;gap:8px;padding:5px 6px;border-radius:6px;cursor:pointer;font-size:13px}.compare-picker__item:hover{background:var(--color-bg)}.compare-picker__item.is-disabled{opacity:.45;cursor:not-allowed}.compare-picker__provider{font-weight:600;min-width:118px}.compare-picker__name{color:var(--color-text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.compare-results{display:flex;flex-direction:column;gap:12px}.compare-card{border:1px solid var(--color-border);border-left:3px solid var(--color-border);border-radius:8px;padding:12px 14px;display:flex;flex-direction:column;gap:8px}.compare-card--ok{border-left-color:var(--color-success)}.compare-card--refused{border-left-color:var(--color-danger)}.compare-card--error{border-left-color:var(--color-text-muted)}.compare-card__head{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.compare-card__model{font-size:12px;font-weight:600;word-break:break-all}.compare-card__badge{font-size:11px;padding:2px 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var(--color-border);background:var(--color-surface);color:var(--color-text-muted);cursor:pointer;font-weight:600;font-size:13px}.provider-switch__btn.is-active{background:var(--color-text);border-color:var(--color-text);color:var(--color-surface)}.provider-switch__btn:disabled{opacity:.45;cursor:not-allowed}.history-card__settings{display:flex;flex-direction:column;gap:6px}.history-card__actions{display:flex;gap:8px;flex-wrap:wrap}.param-list{margin:0;display:flex;flex-direction:column;gap:3px;font-size:12px}.param-list__row{display:flex;gap:8px}.param-list__row dt{color:var(--color-text-muted);min-width:96px;flex-shrink:0}.param-list__row dd{margin:0;word-break:break-word}.model-picker__head{display:flex;align-items:baseline;justify-content:space-between;gap:8px}.model-filter{display:flex;flex-direction:column;gap:8px;padding:10px;margin:6px 0 8px;border:1px solid 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