:root{--background:#f5f7f6;--surface:#fff;--text:#17201d;--muted:#5d6965;--primary:#217a5b;--border:#7e8984;--error:#c94f49;--error-ink:#8a2e2b;--control-radius:6px;--media-radius:8px}*{box-sizing:border-box}html{background:var(--background)}body{color:var(--text);background:var(--background);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}button,input,textarea,select{font:inherit}button{border:1px solid var(--primary);border-radius:var(--control-radius);color:#fff;background:var(--primary);cursor:pointer;min-height:44px;padding:0 16px;font-weight:600}button:disabled{cursor:wait;opacity:.65}a{color:var(--primary);font-weight:600}.header-link,.history-link{align-items:center;min-height:44px;padding:0 8px;display:inline-flex}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid var(--primary);outline-offset:3px}.workspace{width:min(100% - 48px,1280px);margin:0 auto;padding:28px 0 48px}.site-footer{padding:20px 16px calc(20px + env(safe-area-inset-bottom));text-align:center;color:color-mix(in srgb, var(--text) 68%, transparent);font-size:13px}.site-footer a{color:inherit;font-weight:400}.workspace-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px;padding-bottom:16px;display:flex}.product-label{color:var(--primary);margin:0 0 4px;font-size:14px;font-weight:700}h1,h2,h3,p{letter-spacing:0}h1{margin:0;font-size:28px;line-height:1.25}h2{margin:0;font-size:18px;line-height:1.4}.card-composer{grid-template-columns:minmax(0,1fr) minmax(360px,.9fr);align-items:start;column-gap:32px;display:grid}.composer-grid{display:contents}.editor-panel{min-width:0;padding:4px 0 84px}.editor-intro{margin-bottom:24px}.editor-intro p{color:var(--muted);margin:6px 0 0;line-height:1.55}fieldset{border:0;min-width:0;margin:0 0 16px;padding:0}legend,label{font-size:14px;font-weight:700}legend{margin-bottom:8px}.segmented-control{flex-wrap:wrap;gap:8px;display:flex}.segmented-control label{cursor:pointer;min-height:44px;position:relative}.segmented-control input{opacity:0;position:absolute}.segmented-control span{border:1px solid var(--border);border-radius:var(--control-radius);background:var(--surface);justify-content:center;align-items:center;min-height:44px;padding:0 14px;display:flex}.segmented-control input:checked+span{border-color:var(--primary);color:#fff;background:var(--primary)}.segmented-control input:focus-visible+span{outline:3px solid var(--primary);outline-offset:3px}.select-label,.raw-label{gap:8px;margin:0 0 16px;display:grid}select,input,textarea{border:1px solid var(--border);border-radius:var(--control-radius);width:100%;min-height:44px;color:var(--text);background:var(--surface);padding:10px 12px}textarea{resize:vertical;min-height:112px;line-height:1.5}.privacy-note,.fallback-notice{color:var(--muted);margin:0 0 16px;font-size:13px;line-height:1.55}.fallback-notice{border-left:3px solid var(--primary);padding-left:8px}.field-error,.generation-status p{border-left:3px solid var(--error);color:var(--error-ink);margin:0 0 12px;padding-left:8px;font-size:14px;font-weight:700}.edit-load-status{color:var(--muted);margin:0 0 16px;font-size:14px}.edit-load-error{border-left:3px solid var(--error);margin-bottom:16px;padding-left:8px}.edit-load-error p{color:var(--error-ink);margin:0 0 8px;font-size:14px;font-weight:700}.edit-load-error button{margin:0}.rewrite-editor{border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin:24px 0;padding:20px 0}.section-heading{justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.section-heading span{color:var(--muted);font-size:13px;font-weight:600}.sample-label{color:var(--primary)!important}.rewrite-editor>label,.line-fields label{gap:6px;margin:0 0 12px;display:grid}.text-button,.retry-button{border-color:var(--primary);min-height:44px;color:var(--primary);background:0 0;margin:0 0 16px}.generation-status{margin:12px 0}.generation-status ol{color:var(--muted);gap:0;margin:0;padding:0;font-size:13px;list-style:none;display:flex}.generation-status li{align-items:center;gap:6px;display:flex}.generation-status li:not(:last-child):after{background:var(--border);content:"";width:20px;height:1px;margin:0 8px}.generation-status .is-active{color:var(--primary);font-weight:700}.generation-status>span{color:var(--muted);margin-top:8px;font-size:13px;display:block}.shared-primary-action{z-index:2;padding:12px 0 max(12px, env(safe-area-inset-bottom));background:var(--background);margin-top:12px;position:sticky;bottom:0}.shared-primary-action button,.shared-primary-action .primary-download,.retry-button{width:100%}.primary-download{border:1px solid var(--primary);border-radius:var(--control-radius);color:#fff;background:var(--primary);justify-content:center;align-items:center;min-height:44px;text-decoration:none;display:inline-flex}.preview-column{position:sticky;top:24px}.preview-panel{min-width:0}.watch-frame{border:1px solid var(--border);border-radius:var(--media-radius);background:#eaf0ec;width:min(100%,416px);margin:0 auto;overflow:hidden;box-shadow:0 4px 12px #17201d14;container-type:inline-size}.watch-frame img{object-fit:cover;width:100%;height:100%;display:block}.watch-card{height:100%;padding:var(--watch-padding);color:var(--watch-text);background:var(--watch-background);flex-direction:column;display:flex}.watch-card-header{justify-content:space-between;align-items:center;gap:8px;display:flex}.watch-accent{width:4cqw;max-width:4px;height:calc(var(--watch-title-size) * 1.1);background:var(--watch-accent);border-radius:2px}.watch-topic{color:var(--watch-accent);font-size:var(--watch-title-size);margin:0 0 0 auto}.watch-card h3{font-size:var(--watch-title-size);margin:12cqw 0 8cqw;line-height:1.2}.watch-lines{gap:7px;display:grid}.watch-lines p{font-size:var(--watch-body-size);margin:0;font-weight:700;line-height:1.45}.watch-footer{border-top:1px solid color-mix(in srgb, var(--watch-text) 30%, transparent);color:var(--watch-text);font-size:var(--watch-footer-size);opacity:.72;margin:auto 0 0;padding-top:6cqw}.preview-image-error{border-left:3px solid var(--error);height:100%;color:var(--error-ink);text-align:center;background:#fff7f6;place-items:center;margin:0;padding:16px;font-weight:700;display:grid}.mobile-mode-switch{display:none}@media (min-width:768px){.editor-panel{grid-area:1/1;padding-bottom:0}.preview-column{grid-area:1/2/span 2}.shared-primary-action{background:0 0;grid-area:2/1;margin-top:24px;padding:0;position:static}}@media (min-width:768px) and (max-width:1099px){.workspace{width:min(100% - 40px,1000px)}.card-composer{grid-template-columns:minmax(0,1.1fr) minmax(300px,.9fr);column-gap:24px}.preview-column{top:16px}}@media (max-width:767px){.workspace{width:min(100% - 24px,600px);padding:20px 0 24px}.workspace-header{margin-bottom:16px}h1{font-size:24px}.mobile-mode-switch{border:1px solid var(--border);border-radius:var(--control-radius);background:var(--surface);grid-template-columns:1fr 1fr;gap:0;margin-bottom:16px;display:grid;overflow:hidden}.mobile-mode-switch button{color:var(--muted);background:0 0;border:0;border-radius:0}.mobile-mode-switch button[aria-selected=true]{color:#fff;background:var(--primary)}.card-composer,.composer-grid{display:block}.preview-column{position:static}.mobile-hidden{display:none}.topic-control{gap:6px}.segmented-control span{padding:0 12px}input,textarea,select{font-size:16px}.watch-frame{width:min(100%,360px)}.shared-primary-action{margin-top:12px}}.history-shell{width:min(100% - 48px,960px);margin:0 auto;padding:28px 0 48px}.history-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px;padding-bottom:16px;display:flex}.history-state{justify-items:start;gap:12px;padding:32px 0;display:grid}.history-state p,.history-toolbar p,.history-card p,.history-dialog p{color:var(--muted);margin:0;line-height:1.5}.history-operation-error{border-left:3px solid var(--error);color:var(--error-ink);margin:0 0 16px;padding-left:8px;font-size:14px;font-weight:700}.history-skeleton{border-radius:var(--media-radius);background:#e3e8e5;width:min(100%,420px);height:120px}.history-empty{max-width:460px}.history-empty h2{margin:0}.primary-link,.history-edit-link{border:1px solid var(--primary);border-radius:var(--control-radius);color:#fff;background:var(--primary);justify-content:center;align-items:center;min-height:44px;padding:0 16px;text-decoration:none;display:inline-flex}.history-toolbar{justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px;display:flex}.history-date-group{margin:0 0 32px}.history-date-group h2{margin-bottom:12px;font-size:16px}.history-card-list{gap:12px;display:grid}.history-card{border:1px solid var(--border);border-radius:var(--media-radius);background:var(--surface);grid-template-columns:152px minmax(0,1fr);gap:16px;min-width:0;padding:12px;display:grid}.history-thumbnail,.history-thumbnail-fallback{aspect-ratio:1;border-radius:var(--media-radius);background:#eaf0ec;width:152px}.history-thumbnail{object-fit:cover;display:block}.history-thumbnail-fallback{color:var(--error-ink);text-align:center;place-items:center;padding:12px;display:grid}.history-card-copy{min-width:0}.history-card-meta,.history-card-signoff{font-size:13px}.history-card h3{margin:4px 0 8px;font-size:18px;line-height:1.35}.history-card-signoff{margin-top:6px!important}.history-card-actions,.history-dialog-actions{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.secondary-action{border-color:var(--primary);min-height:44px;color:var(--primary);background:0 0}.danger-action{border-color:var(--error);min-height:44px;color:var(--error-ink);background:0 0}.history-more{width:100%;margin-top:-8px;display:block}.undo-toast{right:24px;bottom:max(24px, env(safe-area-inset-bottom));z-index:5;border:1px solid var(--border);border-radius:var(--control-radius);max-width:calc(100% - 48px);color:var(--text);background:var(--surface);align-items:center;gap:12px;padding:12px;display:flex;position:fixed;box-shadow:0 4px 12px #17201d24}.undo-toast button{color:var(--primary);background:0 0;flex:none}.history-dialog-backdrop{z-index:4;background:#17201d61;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.history-dialog{border-radius:var(--media-radius);background:var(--surface);width:min(100%,420px);padding:24px;box-shadow:0 8px 24px #17201d33}.history-dialog h2{margin-bottom:8px}.history-dialog-actions{justify-content:flex-end}@media (max-width:767px){.history-shell{width:min(100% - 24px,600px);padding:20px 0 32px}.history-header{margin-bottom:16px}.history-toolbar{flex-direction:column;align-items:flex-start}.history-card{grid-template-columns:112px minmax(0,1fr);gap:12px}.history-thumbnail,.history-thumbnail-fallback{width:112px}.history-card-actions{margin-top:8px}.history-card-actions>*{flex:auto}.undo-toast{right:12px;bottom:max(12px, env(safe-area-inset-bottom));max-width:calc(100% - 24px)}.history-dialog-actions>*{flex:1 1 0}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}