:root{--color-bg: #fafafa;--color-surface: #ffffff;--color-text: #111111;--color-text-muted: #666666;--color-border: #e5e5e5;--color-primary: #111111;--color-primary-hover: #333333;--color-accent: #2563eb;--color-accent-hover: #1d4ed8;--color-success: #16a34a;--color-error: #dc2626;--color-warning: #d97706;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1);--max-width: 1200px;--max-width-narrow: 720px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}main{flex:1}img,video{max-width:100%;height:auto;display:block}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}.site-header{border-bottom:1px solid var(--color-border);background:var(--color-surface)}.header-inner{max-width:var(--max-width);margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between}.logo{font-size:1.25rem;font-weight:700;color:var(--color-text);text-decoration:none;letter-spacing:-.02em}.header-nav a{color:var(--color-text-muted);font-size:.875rem;font-weight:500;text-decoration:none}.header-nav a:hover{color:var(--color-text);text-decoration:none}.site-footer{border-top:1px solid var(--color-border);background:var(--color-surface);padding:24px;margin-top:auto}.footer-inner{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.footer-links{display:flex;gap:24px}.footer-links a{color:var(--color-text-muted);font-size:.8125rem;text-decoration:none}.footer-links a:hover{color:var(--color-text)}.footer-copy{color:var(--color-text-muted);font-size:.8125rem}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border-radius:var(--radius-md);font-size:.875rem;font-weight:600;cursor:pointer;border:none;transition:all .15s ease;text-decoration:none;gap:8px}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-hover);text-decoration:none}.btn-accent{background:var(--color-accent);color:#fff}.btn-accent:hover{background:var(--color-accent-hover);text-decoration:none}.btn-outline{background:transparent;color:var(--color-text);border:1px solid var(--color-border)}.btn-outline:hover{border-color:var(--color-text);text-decoration:none}.btn-lg{padding:14px 28px;font-size:1rem}.btn:disabled{opacity:.5;cursor:not-allowed}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:24px}.form-group{margin-bottom:20px}.form-label{display:block;font-size:.875rem;font-weight:600;margin-bottom:6px;color:var(--color-text)}.form-hint{font-size:.8125rem;color:var(--color-text-muted);margin-bottom:6px}.form-input,.form-textarea,.form-select{width:100%;padding:10px 12px;border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:.875rem;font-family:var(--font-sans);background:var(--color-surface);color:var(--color-text);transition:border-color .15s}.form-input:focus,.form-textarea:focus,.form-select:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px #2563eb1a}.form-textarea{min-height:120px;resize:vertical}.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}.container-narrow{max-width:var(--max-width-narrow);margin:0 auto;padding:0 24px}.section{padding:64px 0}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.mt-4{margin-top:16px}.mt-8{margin-top:32px}.mt-12{margin-top:48px}.mb-4{margin-bottom:16px}.mb-8{margin-bottom:32px}.badge{display:inline-block;padding:2px 8px;border-radius:9999px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.02em}.badge-pending{background:#f3f4f6;color:#6b7280}.badge-generating{background:#dbeafe;color:#2563eb}.badge-completed{background:#dcfce7;color:#16a34a}.badge-failed{background:#fee2e2;color:#dc2626}.spinner{width:20px;height:20px;border:2px solid var(--color-border);border-top-color:var(--color-accent);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;pointer-events:none;transition:opacity .2s}.modal-overlay.active{opacity:1;pointer-events:all}.modal{background:var(--color-surface);border-radius:var(--radius-xl);padding:32px;max-width:420px;width:90%;box-shadow:var(--shadow-lg)}.modal h2{font-size:1.25rem;margin-bottom:16px}