:root { color-scheme: light; --bg-page: #f3f4f6; --bg-card: #ffffff; --bg-subtle: #f9fafb; --border-subtle: #e5e7eb; --border-strong: #d1d5db; --text-main: #111827; --text-muted: #6b7280; --text-soft: #9ca3af; --accent: #2563eb; --accent-soft: #dbeafe; --accent-strong: #1d4ed8; --danger: #b91c1c; --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.08); --radius-lg: 16px; --radius-md: 10px; --radius-pill: 999px; --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
} *,
*::before,
*::after { box-sizing: border-box;
} /* 页面级样式由 v2 yst-theme 统一接管, 这里仅保留工具卡片样式 */ .placard-page-header,
.placard-page-footer { display: none !important; } .page-main { margin: 0; padding: 18px 18px 8px;
} .layout { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: flex-start;
} .tool-card,
.preview-card { background-color: var(--bg-card); border-radius: var(--radius-lg); border: 1px solid rgba(148, 163, 184, 0.18); box-shadow: var(--shadow-soft); padding: 20px 20px 18px;
} .card-header { margin-bottom: 14px;
} .card-title { margin: 0 0 4px; font-size: 18px;
} .card-desc { margin: 0; font-size: 13px; color: var(--text-muted); line-height: 1.6;
} .form-group { margin-top: 10px;
} .field-label { display: block; font-size: 13px; margin-bottom: 6px; color: #374151;
} .text-input { width: 100%; min-height: 104px; border-radius: 14px; border: 1px solid var(--border-subtle); padding: 10px 12px; resize: vertical; font-size: 14px; line-height: 1.6; font-family: var(--font-sans); color: var(--text-main); background-color: var(--bg-subtle); transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
} .text-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.35); background-color: #ffffff;
} .text-input::placeholder { color: var(--text-soft);
} .preset-row { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 8px;
} .chip-button { border-radius: var(--radius-pill); border: 1px solid rgba(148, 163, 184, 0.6); background-color: #ffffff; padding: 5px 11px; font-size: 12px; color: #374151; cursor: pointer; transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
} .chip-button:hover { background-color: #f3f4ff; border-color: var(--accent); transform: translateY(-0.5px);
} .chip-button:active { transform: translateY(0);
} .action-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 12px;
} .primary-button,
.secondary-button,
.ghost-button { border-radius: 999px; border: none; cursor: pointer; font-size: 14px; font-weight: 500; padding: 8px 18px; display: inline-flex; align-items: center; justify-content: center; gap: 6px; transition: background-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease, border-color 0.15s ease;
} .primary-button { background-color: var(--accent); color: #f9fafb; box-shadow: 0 14px 30px rgba(37, 99, 235, 0.35);
} .primary-button:hover { background-color: var(--accent-strong); box-shadow: 0 16px 40px rgba(37, 99, 235, 0.45); transform: translateY(-0.5px);
} .primary-button:active { transform: translateY(0); box-shadow: 0 8px 18px rgba(37, 99, 235, 0.35);
} .secondary-button { background-color: #111827; color: #f9fafb;
} .secondary-button:hover { background-color: #020617;
} .ghost-button { background-color: transparent; border: 1px solid var(--border-strong); color: #111827;
} .ghost-button:hover { background-color: #f9fafb; border-color: #9ca3af;
} .shortcut-hint { margin: 0; font-size: 12px; color: var(--text-soft);
} kbd { display: inline-block; padding: 1px 5px; border-radius: 4px; border: 1px solid #d1d5db; background-color: #f9fafb; font-size: 11px; font-family: var(--font-sans);
} .canvas-wrapper { margin-top: 8px; border-radius: 18px; background: radial-gradient(circle at top left, #eef2ff 0, #f9fafb 45%, #e5e7eb 100%); padding: 16px 12px 14px; display: flex; justify-content: center; align-items: center; min-height: 300px;
} .placeholder-text { display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
} .sign-canvas { display: block; max-width: 100%; height: auto; border-radius: 16px; background-color: #f5f5f8; border: 1px solid rgba(148, 163, 184, 0.45); object-fit: contain;
} .download-row { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 10px;
} .hint-text { margin: 8px 0 0; font-size: 12px; color: var(--text-soft);
} .message-bar { margin-top: 8px; min-height: 0; font-size: 12px; color: #065f46; background-color: #ecfdf5; border-radius: 10px; border: 1px solid #a7f3d0; padding: 6px 9px; display: none;
} .message-bar.is-visible { display: block;
} .message-bar.is-error { color: #991b1b; background-color: #fef2f2; border-color: #fecaca;
} .section-title { margin: 0 0 6px; font-size: 17px;
} .section-desc { margin: 0 0 10px; font-size: 13px; color: var(--text-muted); line-height: 1.7;
} .steps-section { margin-top: 16px; padding-top: 10px; border-top: 1px dashed rgba(148, 163, 184, 0.6);
} .steps-list { margin: 4px 0 0 18px; padding: 0; font-size: 13px; color: #374151; line-height: 1.7;
} .steps-list li + li { margin-top: 2px;
} .info-section { margin-top: 26px;
} .info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px;
} .info-grid > div { min-width: 0;
} .scene-list { margin: 4px 0 0; padding-left: 18px; font-size: 13px; color: #374151; line-height: 1.7;
} .scene-list li + li { margin-top: 4px;
} .example-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 6px; background-color: #f9fafb; border-radius: 12px; overflow: hidden; border: 1px solid #e5e7eb;
} .example-table th,
.example-table td { padding: 7px 9px; text-align: left;
} .example-table thead { background-color: #e5edff;
} .example-table tbody tr:nth-child(even) { background-color: #f3f4ff;
} .example-table tbody tr:nth-child(odd) { background-color: #f9fafb;
} .faq-section { margin-top: 24px; padding: 18px 16px 16px; border-radius: 18px; background-color: #f9fafb; border: 1px solid rgba(148, 163, 184, 0.35);
} .faq-list { margin-top: 6px; display: flex; flex-direction: column; gap: 10px;
} .faq-item { padding: 8px 10px 6px; border-radius: 12px; background-color: #ffffff; border: 1px solid #e5e7eb;
} .faq-question { margin: 0 0 4px; font-size: 14px;
} .faq-answer { margin: 0; font-size: 13px; color: #4b5563; line-height: 1.7;
} /* page-footer 已在 v2 shell 隐藏, 不再需要样式 */ @media (max-width: 900px) { .layout { grid-template-columns: minmax(0, 1fr); } .preview-card { order: -1; } .tool-card, .preview-card { padding: 16px 14px 14px; } .info-grid { grid-template-columns: minmax(0, 1fr); }
} @media (max-width: 640px) { .action-row { flex-direction: column; align-items: flex-start; } .download-row { flex-direction: column; }
}