:root {
    --color-bg: #faf8f5;
    --color-bg-alt: #f5f1ea;
    --color-bg-card: #ffffff;
    --color-text-primary: #2d2a26;
    --color-text-secondary: #6b655d;
    --color-text-muted: #9c958b;
    --color-accent: #c17f59;
    --color-accent-light: #e8c9a8;
    --color-accent-dark: #a6684a;
    --color-primary: #4a6670;
    --color-primary-light: #7a9aa6;
    --color-border: #e8e2d9;
    --color-border-light: #f0ebe3;
    --color-success: #6b8e6b;
    --color-warning: #d4a853;
    --color-error: #c1725f;
    --color-energy: #e8915a;
    --color-calm: #7a9aa6;
    --color-anxious: #c1725f;
    --color-surprised: #d4a853;
    --shadow-sm: 0 1px 3px rgba(45, 42, 38, 0.04), 0 1px 2px rgba(45, 42, 38, 0.06);
    --shadow-md: 0 4px 12px rgba(45, 42, 38, 0.06), 0 2px 4px rgba(45, 42, 38, 0.04);
    --shadow-lg: 0 12px 32px rgba(45, 42, 38, 0.08), 0 4px 8px rgba(45, 42, 38, 0.06);
    --shadow-xl: 0 24px 48px rgba(45, 42, 38, 0.1), 0 8px 16px rgba(45, 42, 38, 0.06);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font-serif: 'Noto Serif SC', 'Songti SC', serif;
    --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(250, 248, 245, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-light);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-mark {
    font-size: 24px;
    color: var(--color-accent);
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 36px;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--color-text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    padding: 10px 24px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.nav-cta:hover {
    background: var(--color-accent-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 32px 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
}

.glow-1 {
    width: 500px;
    height: 500px;
    background: var(--color-accent-light);
    top: -100px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.glow-2 {
    width: 400px;
    height: 400px;
    background: var(--color-primary-light);
    bottom: -100px;
    left: -100px;
    animation: float 10s ease-in-out infinite reverse;
    opacity: 0.3;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -30px); }
}

.hero-noise {
    position: absolute;
    inset: 0;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 56px;
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text-primary);
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.highlight {
    color: var(--color-accent);
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    right: 0;
    height: 8px;
    background: var(--color-accent-light);
    opacity: 0.3;
    z-index: -1;
    border-radius: 4px;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 64px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.btn-primary:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    padding: 16px 32px;
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.btn-secondary:hover {
    background: var(--color-bg-alt);
    border-color: var(--color-text-muted);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--color-text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--color-bg-alt);
    color: var(--color-accent);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 40px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: 17px;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

.features {
    padding: 120px 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    position: relative;
    padding: 40px 32px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-border);
}

.feature-card.featured {
    grid-column: span 1;
    border-color: var(--color-accent-light);
    background: linear-gradient(135deg, #fffaf5 0%, #ffffff 100%);
}

.feature-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 4px 12px;
    background: var(--color-accent);
    color: white;
    font-size: 12px;
    font-weight: 500;
    border-radius: 100px;
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    color: var(--color-accent);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.feature-2 .feature-icon {
    background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
    color: white;
}

.feature-title {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 4px 12px;
    background: var(--color-bg-alt);
    color: var(--color-text-secondary);
    font-size: 13px;
    border-radius: 100px;
}

.content-source-section {
    padding: 120px 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.source-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.source-tab-btn {
    flex: 1;
    min-width: 200px;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 24px;
    background: var(--color-bg-card);
    border: 2px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    text-align: left;
}

.source-tab-btn:hover {
    border-color: var(--color-border);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.source-tab-btn.active {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, #fffaf5 0%, #ffffff 100%);
    box-shadow: var(--shadow-md);
}

.source-tab-icon {
    font-size: 32px;
    line-height: 1;
}

.source-tab-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.source-tab-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.source-tab-status {
    font-size: 12px;
    color: var(--color-text-muted);
}

.source-content {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.source-panel {
    display: none;
}

.source-panel.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.source-panel-layout {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    min-height: 500px;
}

.source-panel-left {
    padding: 40px;
    border-right: 1px solid var(--color-border-light);
}

.source-panel-right {
    padding: 40px;
    background: var(--color-bg);
}

.source-step {
    display: flex;
    gap: 20px;
    margin-bottom: 32px;
}

.source-step:last-child {
    margin-bottom: 0;
}

.step-marker {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-light);
    color: var(--color-accent-dark);
    border-radius: 50%;
    font-size: 16px;
    font-weight: 600;
    flex-shrink: 0;
    font-family: var(--font-serif);
}

.step-body {
    flex: 1;
}

.step-body h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

.step-body p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.authorize-area {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.authorize-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.authorize-btn:hover {
    background: var(--color-accent-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.authorize-btn.authorized {
    background: var(--color-success);
}

.auth-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-muted);
}

.auth-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.auth-status-dot.pending {
    background: var(--color-text-muted);
}

.auth-status-dot.in-progress {
    background: var(--color-warning);
    animation: pulse 1.5s ease-in-out infinite;
}

.auth-status-dot.done {
    background: var(--color-success);
}

.sync-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sync-option {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.sync-option:hover {
    border-color: var(--color-border);
    background: var(--color-bg-card);
}

.sync-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    cursor: pointer;
    accent-color: var(--color-accent);
    flex-shrink: 0;
}

.sync-option-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sync-option-text strong {
    font-size: 14px;
    color: var(--color-text-primary);
}

.sync-option-text small {
    font-size: 12px;
    color: var(--color-text-muted);
}

.upload-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px 24px;
    background: var(--color-bg);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.upload-area:hover {
    border-color: var(--color-accent);
    background: #fffaf5;
}

.upload-area.dragover {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

.upload-area.audio {
    padding: 32px 24px;
}

.upload-icon {
    color: var(--color-accent);
    opacity: 0.7;
}

.upload-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.upload-text strong {
    font-size: 15px;
    color: var(--color-text-primary);
}

.upload-text small {
    font-size: 13px;
    color: var(--color-text-muted);
}

.podcast-tip {
    display: flex;
    gap: 12px;
    padding: 16px;
    background: linear-gradient(135deg, #fdf8f3 0%, #faf5ef 100%);
    border: 1px solid var(--color-accent-light);
    border-radius: var(--radius-md);
}

.tip-icon {
    font-size: 20px;
    line-height: 1;
}

.tip-content strong {
    display: block;
    font-size: 14px;
    color: var(--color-accent-dark);
    margin-bottom: 4px;
}

.tip-content p {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

.parse-progress {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 20px;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
}

.parse-step {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: var(--color-text-muted);
}

.parse-step.done {
    color: var(--color-success);
}

.parse-step.active {
    color: var(--color-accent);
    font-weight: 500;
}

.parse-step-icon {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
}

.parse-step.done .parse-step-icon {
    background: var(--color-success);
    color: white;
    border-radius: 50%;
}

.parse-step.active .parse-step-icon.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--color-accent-light);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.preview-card {
    position: sticky;
    top: 100px;
}

.preview-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border-light);
}

.preview-empty {
    text-align: center;
    padding: 40px 20px;
}

.preview-empty-icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.preview-empty p {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 4px;
}

.preview-empty-hint {
    font-size: 12px;
    color: var(--color-text-muted);
}

.preview-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.preview-book {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
}

.book-cover {
    width: 40px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
    font-weight: 600;
    border-radius: 6px;
    flex-shrink: 0;
    font-family: var(--font-serif);
}

.book-info {
    flex: 1;
    min-width: 0;
}

.book-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 6px;
}

.book-progress-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.book-progress-bar {
    flex: 1;
    height: 4px;
    background: var(--color-border-light);
    border-radius: 100px;
    overflow: hidden;
}

.book-progress-fill {
    height: 100%;
    background: var(--color-accent);
    border-radius: 100px;
}

.book-progress-text {
    font-size: 12px;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.preview-doc {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
}

.doc-icon {
    width: 40px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 11px;
    font-weight: 700;
    border-radius: 6px;
    flex-shrink: 0;
}

.doc-icon.pdf {
    background: linear-gradient(135deg, #c1725f, #a55a48);
}

.doc-icon.epub {
    background: linear-gradient(135deg, #4a6670, #3a5660);
}

.doc-info {
    flex: 1;
    min-width: 0;
}

.doc-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.doc-meta {
    font-size: 12px;
    color: var(--color-text-muted);
}

.doc-status {
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 100px;
    white-space: nowrap;
}

.doc-status.done {
    background: rgba(107, 142, 107, 0.15);
    color: var(--color-success);
}

.preview-podcast {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
}

.podcast-cover {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.podcast-info {
    flex: 1;
    min-width: 0;
}

.podcast-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
    line-height: 1.5;
}

.podcast-meta {
    font-size: 12px;
    color: var(--color-text-muted);
}

.podcast-workflow {
    padding: 0;
}

.podcast-upload-section {
    padding: 40px;
}

.podcast-step-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

.podcast-step-card {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
}

.podcast-history-card {
    padding: 24px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
}

.podcast-history-card .preview-title {
    margin-bottom: 16px;
    padding-bottom: 0;
    border-bottom: none;
}

.podcast-result-section {
    padding: 40px;
    position: relative;
}

.result-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 28px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border-light);
    flex-wrap: wrap;
}

.result-title {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.result-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-muted);
    flex-wrap: wrap;
}

.result-meta-divider {
    color: var(--color-border);
}

.result-reupload-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 13px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    white-space: nowrap;
}

.result-reupload-btn:hover {
    background: var(--color-bg-alt);
    color: var(--color-text-primary);
    border-color: var(--color-text-muted);
}

.result-view-tabs {
    display: flex;
    gap: 4px;
    padding: 6px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    border: 1px solid var(--color-border-light);
}

.result-tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    font-weight: 500;
}

.result-tab-btn:hover {
    color: var(--color-text-primary);
}

.result-tab-btn.active {
    background: var(--color-bg-card);
    color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.result-tab-icon {
    font-size: 16px;
}

.result-view-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.result-view-panel.active {
    display: block;
}

.mindmap-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.mindmap-legend {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--color-text-muted);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.legend-dot.center {
    background: var(--color-accent);
}

.legend-dot.branch {
    background: var(--color-primary);
}

.legend-dot.leaf {
    background: var(--color-accent-light);
    border: 1px solid var(--color-accent);
}

.mindmap-actions {
    display: flex;
    gap: 6px;
}

.mindmap-action-btn {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.mindmap-action-btn:hover {
    background: var(--color-bg-alt);
    color: var(--color-accent);
    border-color: var(--color-accent-light);
}

.mindmap-container {
    background: linear-gradient(135deg, #fdfbf8 0%, #f8f4ee 100%);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 24px;
    overflow: auto;
    position: relative;
}

.mindmap-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 1px 1px, rgba(45, 42, 38, 0.04) 1px, transparent 0);
    background-size: 24px 24px;
    border-radius: var(--radius-lg);
    pointer-events: none;
}

.mindmap-svg {
    width: 100%;
    height: 500px;
    display: block;
    position: relative;
    z-index: 1;
}

.mindmap-node-center {
    fill: var(--color-accent);
    stroke: var(--color-accent-dark);
    stroke-width: 2;
    filter: drop-shadow(0 4px 12px rgba(193, 127, 89, 0.3));
}

.mindmap-node-branch {
    fill: var(--color-primary);
    stroke: var(--color-primary);
    stroke-width: 1.5;
    filter: drop-shadow(0 2px 8px rgba(74, 102, 112, 0.2));
}

.mindmap-node-leaf {
    fill: #ffffff;
    stroke: var(--color-accent-light);
    stroke-width: 1.5;
}

.mindmap-text-center {
    fill: #ffffff;
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font-sans);
    text-anchor: middle;
    dominant-baseline: middle;
}

.mindmap-text-branch {
    fill: #ffffff;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-sans);
    text-anchor: middle;
    dominant-baseline: middle;
}

.mindmap-text-leaf {
    fill: var(--color-text-primary);
    font-size: 12px;
    font-weight: 500;
    font-family: var(--font-sans);
    text-anchor: middle;
    dominant-baseline: middle;
}

.mindmap-line {
    fill: none;
    stroke: var(--color-border);
    stroke-width: 1.5;
}

.mindmap-line-main {
    stroke: var(--color-accent-light);
    stroke-width: 2;
}

.mindmap-keytakeaways {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--color-border-light);
}

.mindmap-keytakeaways h5 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 16px;
}

.keytakeaways-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.keytakeaway-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.keytakeaway-num {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-light);
    color: var(--color-accent-dark);
    border-radius: 50%;
    font-size: 13px;
    font-weight: 600;
    flex-shrink: 0;
    font-family: var(--font-serif);
}

.keytakeaway-item p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.keytakeaway-item strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

.transcript-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.transcript-search {
    position: relative;
    display: flex;
    align-items: center;
}

.transcript-search svg {
    position: absolute;
    left: 14px;
    color: var(--color-text-muted);
    pointer-events: none;
}

.transcript-search-input {
    padding: 10px 16px 10px 42px;
    width: 280px;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    transition: var(--transition);
}

.transcript-search-input:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-bg-card);
    box-shadow: 0 0 0 4px rgba(193, 127, 89, 0.1);
}

.transcript-search-input::placeholder {
    color: var(--color-text-muted);
}

.transcript-info {
    font-size: 13px;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.transcript-content {
    max-height: 480px;
    overflow-y: auto;
    padding: 20px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
}

.transcript-segment {
    display: flex;
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border-light);
}

.transcript-segment:last-child {
    border-bottom: none;
}

.transcript-segment:first-child {
    padding-top: 0;
}

.segment-time {
    font-family: var(--font-serif);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent);
    min-width: 50px;
    flex-shrink: 0;
    padding-top: 2px;
}

.segment-text {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text-primary);
}

.segment-text .speaker {
    font-weight: 600;
    color: var(--color-primary);
    margin-right: 4px;
}

.summary-overview {
    margin-bottom: 28px;
}

.summary-overview-card {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: linear-gradient(135deg, #fdf8f3 0%, #faf5ef 100%);
    border: 1px solid var(--color-accent-light);
    border-radius: var(--radius-lg);
}

.summary-overview-icon {
    font-size: 32px;
    line-height: 1;
    flex-shrink: 0;
}

.summary-overview-body h5 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-accent-dark);
    margin-bottom: 8px;
}

.summary-overview-body p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.summary-section {
    margin-bottom: 28px;
}

.summary-section-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 16px;
}

.summary-point {
    display: flex;
    gap: 16px;
    padding: 16px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    margin-bottom: 10px;
}

.summary-point-time {
    font-family: var(--font-serif);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent);
    min-width: 50px;
    flex-shrink: 0;
    padding-top: 2px;
}

.summary-point-body strong {
    display: block;
    font-size: 14px;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.summary-point-body p {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.summary-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.summary-tag {
    padding: 6px 14px;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: 100px;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.summary-action-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: linear-gradient(135deg, var(--color-accent-light) 0%, #f5d9be 100%);
    border-radius: var(--radius-lg);
    flex-wrap: wrap;
}

.summary-action-icon {
    font-size: 28px;
    line-height: 1;
    flex-shrink: 0;
}

.summary-action-body {
    flex: 1;
    min-width: 200px;
}

.summary-action-body h5 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-accent-dark);
    margin-bottom: 4px;
}

.summary-action-body p {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.summary-action-buttons {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
}

.summary-action-btn {
    padding: 10px 20px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    white-space: nowrap;
}

.summary-action-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent-dark);
}

.summary-action-btn.primary {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.summary-action-btn.primary:hover {
    background: var(--color-accent-dark);
}

.transcribing-overlay {
    position: absolute;
    inset: 0;
    background: rgba(253, 251, 248, 0.95);
    backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    z-index: 10;
    border-radius: var(--radius-lg);
}

.transcribing-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-light);
    border-radius: 50%;
    font-size: 32px;
    position: relative;
}

.transcribing-icon::after {
    content: '';
    position: absolute;
    inset: -6px;
    border: 2px solid var(--color-accent-light);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.transcribing-title {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.transcribing-progress {
    width: 320px;
    max-width: 80%;
}

.transcribing-progress-bar {
    height: 6px;
    background: var(--color-border-light);
    border-radius: 100px;
    overflow: hidden;
    margin-bottom: 8px;
}

.transcribing-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent-light), var(--color-accent));
    border-radius: 100px;
    width: 0%;
    transition: width 0.4s ease;
}

.transcribing-progress-text {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--color-text-muted);
}

.transcribing-steps {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-secondary);
    text-align: center;
}

.transcribing-step {
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0.4;
    transition: opacity 0.3s ease;
}

.transcribing-step.active {
    opacity: 1;
    color: var(--color-accent-dark);
    font-weight: 500;
}

.transcribing-step.done {
    opacity: 1;
    color: var(--color-success);
}

.transcribing-step-icon {
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

.transcribing-step.active .transcribing-step-icon {
    border: 2px solid var(--color-accent-light);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.transcribing-step.done .transcribing-step-icon {
    background: var(--color-success);
    color: white;
    border-radius: 50%;
}

.recording-section {
    padding: 120px 32px;
    background: var(--color-bg-alt);
}

.recording-section > * {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.mode-switcher {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 48px;
}

.mode-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 20px 40px;
    background: var(--color-bg-card);
    border: 2px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.mode-btn:hover {
    border-color: var(--color-border);
}

.mode-btn.active {
    border-color: var(--color-accent);
    background: var(--color-bg-card);
    box-shadow: var(--shadow-md);
}

.mode-icon {
    font-size: 24px;
    color: var(--color-accent);
}

.mode-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.mode-desc {
    font-size: 13px;
    color: var(--color-text-muted);
}

.recording-demo {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--color-border-light);
}

.recording-panel {
    display: none;
}

.recording-panel.active {
    display: block;
}

.panel-header {
    padding: 32px 40px 24px;
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.panel-date {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.date-day {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.date-week {
    font-size: 14px;
    color: var(--color-text-muted);
}

.mood-selector {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.mood-label {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.mood-options {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.mood-btn {
    padding: 8px 16px;
    background: var(--color-bg-alt);
    border: 1px solid transparent;
    border-radius: 100px;
    font-size: 13px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.mood-btn:hover {
    background: var(--color-bg);
}

.mood-btn.active {
    background: var(--color-accent-light);
    color: var(--color-accent-dark);
    border-color: var(--color-accent);
}

.free-input-area {
    padding: 32px 40px;
    border-bottom: 1px solid var(--color-border-light);
}

.free-textarea {
    width: 100%;
    min-height: 160px;
    padding: 20px;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    font-size: 15px;
    line-height: 1.8;
    color: var(--color-text-primary);
    resize: vertical;
    font-family: var(--font-sans);
    transition: var(--transition);
}

.free-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-bg-card);
    box-shadow: 0 0 0 4px rgba(193, 127, 89, 0.1);
}

.free-textarea::placeholder {
    color: var(--color-text-muted);
}

.input-tools {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
}

.tool-left {
    display: flex;
    gap: 8px;
}

.tool-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.tool-btn:hover {
    background: var(--color-border-light);
    color: var(--color-text-primary);
}

.save-btn {
    padding: 10px 24px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.save-btn:hover {
    background: var(--color-accent-dark);
}

.recent-records {
    padding: 32px 40px;
}

.records-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 20px;
}

.record-item {
    display: flex;
    gap: 16px;
    padding: 16px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
}

.record-item + .record-item {
    margin-top: 8px;
}

.record-item:hover {
    background: var(--color-bg-alt);
}

.record-mood {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-top: 8px;
    flex-shrink: 0;
}

.record-mood.energetic { background: var(--color-energy); }
.record-mood.calm { background: var(--color-calm); }
.record-mood.anxious { background: var(--color-anxious); }
.record-mood.surprised { background: var(--color-surprised); }

.record-content {
    flex: 1;
    min-width: 0;
}

.record-text {
    font-size: 14px;
    color: var(--color-text-primary);
    line-height: 1.7;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.record-meta {
    font-size: 13px;
    color: var(--color-text-muted);
}

.summary-header {
    padding: 32px 40px 24px;
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.summary-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.summary-icon {
    font-size: 24px;
    color: var(--color-accent);
}

.summary-title h3 {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.summary-date {
    font-size: 14px;
    color: var(--color-text-muted);
}

.summary-tabs {
    display: flex;
    gap: 4px;
    padding: 12px 32px;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border-light);
    overflow-x: auto;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    font-family: var(--font-sans);
    font-weight: 500;
}

.tab-btn:hover {
    background: var(--color-bg-alt);
    color: var(--color-text-primary);
}

.tab-btn.active {
    background: var(--color-bg-card);
    color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.tab-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
}

.tab-btn.active .tab-icon {
    background: var(--color-accent-light);
    color: var(--color-accent-dark);
}

.summary-content {
    padding: 32px 40px;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.summary-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 20px;
}

.summary-card:last-child {
    margin-bottom: 0;
}

.summary-card h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 20px;
}

.summary-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.summary-stat {
    text-align: center;
    padding: 16px;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
}

.stat-value {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.stat-unit {
    font-size: 16px;
    font-weight: 400;
    color: var(--color-text-muted);
    margin-left: 2px;
}

.stat-name {
    font-size: 13px;
    color: var(--color-text-muted);
}

.ai-suggestion {
    background: linear-gradient(135deg, #fdf8f3 0%, #faf5ef 100%);
    border: 1px solid var(--color-accent-light);
}

.ai-label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.ai-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.ai-label span:last-child {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent-dark);
}

.ai-text {
    font-size: 15px;
    color: var(--color-text-primary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.ai-source {
    display: flex;
    align-items: center;
}

.source-tag {
    padding: 4px 12px;
    background: var(--color-accent-light);
    color: var(--color-accent-dark);
    font-size: 12px;
    border-radius: 100px;
}

.plan-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border-light);
}

.plan-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.plan-item:first-child {
    padding-top: 0;
}

.plan-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--color-accent);
}

.plan-item label {
    font-size: 15px;
    color: var(--color-text-primary);
    cursor: pointer;
}

.work-list {
    list-style: none;
}

.work-list li {
    position: relative;
    padding: 10px 0 10px 24px;
    font-size: 15px;
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border-light);
}

.work-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.work-list li:first-child {
    padding-top: 0;
}

.work-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 18px;
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
}

.study-progress {
    margin-bottom: 8px;
}

.study-book {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
}

.book-title {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-primary);
}

.book-progress {
    font-size: 14px;
    color: var(--color-text-muted);
}

.progress-bar {
    height: 8px;
    background: var(--color-border-light);
    border-radius: 100px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent-light), var(--color-accent));
    border-radius: 100px;
    transition: width 0.6s ease;
}

.feynman-link {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--color-bg-card);
}

.feynman-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-light);
    border-radius: var(--radius-md);
    font-size: 24px;
    flex-shrink: 0;
}

.feynman-text {
    flex: 1;
    min-width: 0;
}

.feynman-text h5 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.feynman-text p {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.feynman-btn {
    padding: 10px 20px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    font-family: var(--font-sans);
}

.feynman-btn:hover {
    background: var(--color-accent-dark);
}

.food-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.food-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
}

.food-meal {
    width: 48px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent);
    flex-shrink: 0;
}

.food-detail {
    font-size: 14px;
    color: var(--color-text-primary);
}

.anchor-card {
    background: linear-gradient(135deg, #fdf8f3 0%, #f5f0e8 100%);
}

.anchor-header {
    margin-bottom: 20px;
}

.anchor-card h4 {
    color: var(--color-accent-dark);
    margin-bottom: 8px;
}

.anchor-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

.anchor-period-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    padding: 6px;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
}

.period-btn {
    flex: 1;
    padding: 10px 20px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    font-weight: 500;
}

.period-btn:hover {
    background: var(--color-bg-alt);
    color: var(--color-text-primary);
}

.period-btn.active {
    background: var(--color-accent);
    color: white;
    box-shadow: var(--shadow-sm);
}

.anchor-period-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.anchor-period-panel.active {
    display: block;
}

.anchor-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.anchor-summary-stat {
    text-align: center;
    padding: 16px 12px;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
}

.anchor-stat-num {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 600;
    color: var(--color-accent-dark);
    margin-bottom: 4px;
}

.anchor-stat-label {
    font-size: 12px;
    color: var(--color-text-muted);
}

.anchor-timeline {
    position: relative;
    padding-left: 24px;
}

.anchor-timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--color-accent-light);
}

.timeline-item {
    position: relative;
    padding-bottom: 24px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -24px;
    top: 4px;
    width: 16px;
    height: 16px;
    background: var(--color-accent);
    border: 3px solid var(--color-bg-card);
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--color-accent-light);
}

.timeline-dot.ongoing {
    background: var(--color-warning);
    box-shadow: 0 0 0 2px #f5d9a8;
    animation: pulse 2s ease-in-out infinite;
}

.timeline-content h5 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.timeline-content p {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
    line-height: 1.6;
}

.timeline-date {
    font-size: 12px;
    color: var(--color-text-muted);
}

.panel-title-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 28px 40px;
    background: linear-gradient(135deg, #fdf8f3 0%, #faf5ef 100%);
    border-bottom: 1px solid var(--color-border-light);
    gap: 16px;
}

.panel-title-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.panel-mode-icon {
    font-size: 32px;
    color: var(--color-accent);
    line-height: 1;
}

.panel-mode-name {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.panel-mode-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.panel-mode-tag {
    padding: 6px 14px;
    background: var(--color-accent-light);
    color: var(--color-accent-dark);
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
    letter-spacing: 1px;
    white-space: nowrap;
}

.feynman-section {
    padding: 120px 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.feynman-demo {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 32px;
}

.feynman-left {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.concept-selector,
.feynman-steps {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 28px;
}

.concept-selector h4,
.feynman-steps h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 20px;
}

.concept-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.concept-item {
    padding: 16px;
    background: var(--color-bg);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.concept-item:hover {
    border-color: var(--color-border);
}

.concept-item.active {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
}

.concept-name {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.concept-source {
    font-size: 13px;
    color: var(--color-text-muted);
}

.step-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    opacity: 0.5;
}

.step-item.active {
    opacity: 1;
}

.step-num {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border-radius: 50%;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.step-item.active .step-num {
    background: var(--color-accent);
    color: white;
}

.step-text {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.step-item.active .step-text {
    color: var(--color-text-primary);
    font-weight: 500;
}

.feynman-right {
    min-height: 500px;
}

.feynman-chat {
    height: 100%;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-border-light);
}

.student-avatar {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border-radius: 50%;
    font-size: 22px;
}

.student-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.student-status {
    font-size: 13px;
    color: var(--color-success);
}

.chat-messages {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.message {
    display: flex;
    gap: 12px;
    max-width: 85%;
}

.message.student {
    align-self: flex-start;
}

.message.teacher {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-avatar {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border-radius: 50%;
    font-size: 18px;
    flex-shrink: 0;
}

.message.teacher .message-avatar {
    background: var(--color-accent-light);
}

.message-bubble {
    padding: 14px 18px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-text-primary);
}

.message.teacher .message-bubble {
    background: var(--color-accent);
    color: white;
}

.chat-input {
    padding: 16px 20px;
    border-top: 1px solid var(--color-border-light);
    display: flex;
    gap: 12px;
}

.chat-textarea {
    flex: 1;
    min-height: 52px;
    max-height: 120px;
    padding: 14px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-primary);
    resize: none;
    font-family: var(--font-sans);
    transition: var(--transition);
}

.chat-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-bg-card);
}

.chat-textarea::placeholder {
    color: var(--color-text-muted);
}

.send-btn {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
    align-self: flex-end;
}

.send-btn:hover {
    background: var(--color-accent-dark);
}

.goals-section {
    padding: 120px 32px;
    background: var(--color-bg-alt);
}

.goals-section > * {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.goals-demo {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 32px;
}

.goal-input-card,
.goal-breakdown-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.goal-input-card h4,
.breakdown-header h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 20px;
}

.goal-input-wrapper {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.goal-input {
    flex: 1;
    padding: 14px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    transition: var(--transition);
}

.goal-input:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-bg-card);
}

.goal-submit {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 14px 20px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    font-family: var(--font-sans);
}

.goal-submit:hover {
    background: var(--color-accent-dark);
}

.goal-examples {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.example-label {
    font-size: 13px;
    color: var(--color-text-muted);
}

.example-tag {
    display: inline-block;
    padding: 8px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: 100px;
    font-size: 13px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    margin-right: 8px;
    margin-bottom: 8px;
    font-family: var(--font-sans);
}

.example-tag:hover {
    border-color: var(--color-accent-light);
    color: var(--color-accent-dark);
    background: var(--color-accent-light);
}

.breakdown-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.breakdown-progress {
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: flex-end;
}

.progress-text {
    font-size: 13px;
    color: var(--color-text-muted);
}

.progress-track {
    width: 160px;
    height: 6px;
    background: var(--color-bg);
    border-radius: 100px;
    overflow: hidden;
}

.progress-fill-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-success), var(--color-accent));
    border-radius: 100px;
}

.weekly-goals {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

.week-item {
    padding: 20px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    transition: var(--transition);
}

.week-item.current {
    border-color: var(--color-accent-light);
    background: linear-gradient(135deg, #fffaf5 0%, #fdf8f3 100%);
}

.week-item.completed {
    opacity: 0.7;
}

.week-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.week-badge {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border-radius: 50%;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.week-badge.completed {
    background: var(--color-success);
    color: white;
}

.week-badge.current {
    background: var(--color-accent);
    color: white;
}

.week-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.week-tasks {
    list-style: none;
    padding-left: 40px;
}

.week-tasks .task {
    position: relative;
    padding: 6px 0 6px 20px;
    font-size: 14px;
    color: var(--color-text-secondary);
}

.week-tasks .task::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-border);
}

.week-tasks .task.completed {
    color: var(--color-text-muted);
    text-decoration: line-through;
}

.week-tasks .task.completed::before {
    background: var(--color-success);
}

.week-tasks .task.in-progress {
    color: var(--color-text-primary);
    font-weight: 500;
}

.week-tasks .task.in-progress::before {
    background: var(--color-accent);
    animation: pulse 1.5s ease-in-out infinite;
}

.today-tasks {
    padding: 20px;
    background: linear-gradient(135deg, var(--color-accent-light) 0%, #f5d9be 100%);
    border-radius: var(--radius-md);
}

.today-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.today-icon {
    font-size: 20px;
}

.today-header h5 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-accent-dark);
}

.today-task-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-sm);
}

.today-task-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-accent);
}

.today-task-item label {
    flex: 1;
    font-size: 14px;
    color: var(--color-text-primary);
    cursor: pointer;
}

.task-time {
    font-size: 13px;
    color: var(--color-accent-dark);
    font-weight: 500;
}

.cta-section {
    position: relative;
    padding: 120px 32px;
    text-align: center;
    overflow: hidden;
}

.cta-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 400px;
    background: var(--color-accent-light);
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.4;
    z-index: 0;
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 17px;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
}

.cta-main-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 18px 40px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 17px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.cta-main-btn:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border-light);
    padding: 64px 32px 32px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    gap: 48px;
    flex-wrap: wrap;
}

.footer-brand {
    flex: 1;
    min-width: 200px;
}

.footer-tagline {
    margin-top: 12px;
    font-size: 14px;
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    gap: 48px;
    flex-wrap: wrap;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col h6 {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.footer-col a {
    font-size: 14px;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    max-width: 1200px;
    margin: 48px auto 0;
    padding-top: 24px;
    border-top: 1px solid var(--color-border-light);
    text-align: center;
    font-size: 13px;
    color: var(--color-text-muted);
}

@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-card.featured {
        grid-column: span 2;
    }
    
    .source-panel-layout {
        grid-template-columns: 1fr;
    }
    
    .source-panel-left {
        border-right: none;
        border-bottom: 1px solid var(--color-border-light);
    }
    
    .source-panel-right {
        background: var(--color-bg-card);
    }
    
    .preview-card {
        position: static;
    }
    
    .feynman-demo {
        grid-template-columns: 1fr;
    }
    
    .feynman-left {
        flex-direction: row;
    }
    
    .concept-selector,
    .feynman-steps {
        flex: 1;
    }
    
    .goals-demo {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 20px;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: 100px 20px 60px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-stats {
        gap: 24px;
        flex-wrap: wrap;
    }
    
    .stat-divider {
        display: none;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .content-source-section {
        padding: 80px 20px;
    }
    
    .source-tabs {
        flex-direction: column;
    }
    
    .source-tab-btn {
        min-width: 0;
    }
    
    .source-panel-left,
    .source-panel-right {
        padding: 24px 20px;
    }
    
    .podcast-step-grid {
        grid-template-columns: 1fr;
    }
    
    .podcast-upload-section,
    .podcast-result-section {
        padding: 24px 20px;
    }
    
    .result-view-tabs {
        overflow-x: auto;
    }
    
    .result-tab-btn {
        white-space: nowrap;
    }
    
    .transcript-search-input {
        width: 100%;
    }
    
    .mindmap-svg {
        height: 380px;
    }
    
    .summary-action-card {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .features {
        padding: 80px 20px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card.featured {
        grid-column: span 1;
    }
    
    .recording-section {
        padding: 80px 20px;
    }
    
    .panel-header {
        padding: 24px 20px 16px;
    }
    
    .free-input-area {
        padding: 24px 20px;
    }
    
    .recent-records {
        padding: 24px 20px;
    }
    
    .summary-header {
        padding: 24px 20px 16px;
    }
    
    .summary-tabs {
        padding: 8px 16px;
    }
    
    .summary-content {
        padding: 24px 20px;
    }
    
    .summary-stats {
        grid-template-columns: 1fr;
    }
    
    .anchor-summary {
        grid-template-columns: 1fr;
    }
    
    .panel-title-bar {
        padding: 20px;
        flex-direction: column;
        align-items: flex-start;
    }
    
    .feynman-section {
        padding: 80px 20px;
    }
    
    .feynman-left {
        flex-direction: column;
    }
    
    .goals-section {
        padding: 80px 20px;
    }
    
    .goal-input-wrapper {
        flex-direction: column;
    }
    
    .cta-section {
        padding: 80px 20px;
    }
    
    .cta-content h2 {
        font-size: 28px;
    }
    
    .footer {
        padding: 48px 20px 24px;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-links {
        gap: 32px;
    }
    
    .mode-switcher {
        flex-direction: column;
    }

    .mode-btn {
        flex-direction: row;
        justify-content: center;
    }
}

/* ========================================
   可交互改造新增样式
   ======================================== */

/* 饮食输入表单 */
.food-input-form {
    margin-bottom: 20px;
    padding: 20px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
}

.meal-selector {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.meal-btn {
    padding: 6px 16px;
    background: var(--color-bg-alt);
    border: 1px solid transparent;
    border-radius: 100px;
    font-size: 13px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.meal-btn:hover {
    background: var(--color-bg);
}

.meal-btn.active {
    background: var(--color-accent-light);
    color: var(--color-accent-dark);
    border-color: var(--color-accent);
}

.food-input-wrapper {
    display: flex;
    gap: 8px;
}

.food-input {
    flex: 1;
    padding: 10px 14px;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    transition: var(--transition);
}

.food-input:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-bg-card);
    box-shadow: 0 0 0 4px rgba(193, 127, 89, 0.1);
}

.food-input::placeholder {
    color: var(--color-text-muted);
}

.food-add-btn {
    padding: 10px 20px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    white-space: nowrap;
}

.food-add-btn:hover {
    background: var(--color-accent-dark);
}

/* 工作输入表单 */
.work-input-wrapper {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.work-input {
    flex: 1;
    padding: 10px 14px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    transition: var(--transition);
}

.work-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 4px rgba(193, 127, 89, 0.1);
}

.work-input::placeholder {
    color: var(--color-text-muted);
}

.work-add-btn {
    padding: 10px 20px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    white-space: nowrap;
}

.work-add-btn:hover {
    background: var(--color-accent-dark);
}

/* 通用删除按钮（SVG 图标） */
.record-delete-btn,
.food-delete-btn,
.work-delete-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
    padding: 0;
    opacity: 0.6;
}

.record-delete-btn:hover,
.food-delete-btn:hover,
.work-delete-btn:hover {
    background: rgba(193, 127, 89, 0.12);
    color: var(--color-accent);
    opacity: 1;
}

.record-delete-btn svg,
.food-delete-btn svg,
.work-delete-btn svg {
    width: 16px;
    height: 16px;
}

/* 调整 record-item 布局以容纳删除按钮 */
.record-item {
    align-items: flex-start;
}

/* 调整 food-item 布局以容纳删除按钮 */
.food-item {
    justify-content: space-between;
}

.food-item .food-meal {
    width: auto;
    min-width: 48px;
}

.food-item .food-detail {
    flex: 1;
    min-width: 0;
}

/* 调整 work-list li 布局以容纳删除按钮 */
.work-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-right: 0;
}

.work-list li .work-item-content {
    flex: 1;
    min-width: 0;
}

/* 空状态提示 */
.empty-state {
    padding: 32px 16px;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 14px;
    font-family: var(--font-sans);
}

.empty-state.work-empty {
    padding: 16px 0 16px 24px;
    text-align: left;
    color: var(--color-text-muted);
}

/* 响应式补充 */
@media (max-width: 768px) {
    .food-input-wrapper,
    .work-input-wrapper {
        flex-direction: column;
    }

    .food-add-btn,
    .work-add-btn {
        width: 100%;
    }
}

/* ========================================
   登录页面样式
   ======================================== */

.login-page {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
}

.login-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.login-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
}

.login-glow-1 {
    width: 500px;
    height: 500px;
    background: var(--color-accent-light);
    top: -100px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.login-glow-2 {
    width: 400px;
    height: 400px;
    background: var(--color-primary-light);
    bottom: -100px;
    left: -100px;
    animation: float 10s ease-in-out infinite reverse;
    opacity: 0.3;
}

.login-noise {
    position: absolute;
    inset: 0;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    padding: 0 24px;
}

.login-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 48px 40px;
    border: 1px solid var(--color-border-light);
}

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.login-header .logo {
    justify-content: center;
    margin-bottom: 12px;
}

.login-slogan {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.form-title {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

.form-subtitle {
    font-size: 14px;
    color: var(--color-text-muted);
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    font-size: 15px;
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-bg-card);
    box-shadow: 0 0 0 4px rgba(193, 127, 89, 0.1);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.captcha-row {
    display: flex;
    gap: 12px;
}

.captcha-input {
    flex: 1;
}

.captcha-btn {
    padding: 14px 20px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    white-space: nowrap;
}

.captcha-btn:hover {
    background: var(--color-border-light);
    color: var(--color-text-primary);
}

.captcha-btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-options {
    margin-bottom: 24px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-accent);
}

.checkbox-text {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.form-btn {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    justify-content: center;
}

.form-switch {
    text-align: center;
    margin-top: 24px;
    font-size: 14px;
    color: var(--color-text-secondary);
}

.form-link {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.form-link:hover {
    color: var(--color-accent-dark);
    text-decoration: underline;
}

/* ========================================
   用户菜单样式
   ======================================== */

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-menu {
    position: relative;
}

.user-menu-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    color: var(--color-text-secondary);
}

.user-menu-btn:hover {
    background: var(--color-bg-alt);
    color: var(--color-text-primary);
}

.user-avatar {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-light);
    border-radius: 50%;
    color: var(--color-accent-dark);
}

.user-avatar svg {
    width: 18px;
    height: 18px;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
}

.user-menu-arrow {
    transition: transform 0.2s ease;
}

.user-menu-btn.active .user-menu-arrow {
    transform: rotate(180deg);
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 180px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: none;
    z-index: 100;
}

.user-dropdown.show {
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    font-size: 14px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.dropdown-item:hover {
    background: var(--color-bg-alt);
    color: var(--color-text-primary);
}

.dropdown-divider {
    height: 1px;
    background: var(--color-border-light);
}

/* ========================================
   移动端菜单样式
   ======================================== */

.mobile-menu-btn {
    display: none;
    padding: 8px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: var(--transition);
}

.mobile-menu-btn:hover {
    background: var(--color-bg-alt);
    color: var(--color-text-primary);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-md);
    z-index: 99;
}

.mobile-menu.show {
    display: block;
}

.mobile-menu-content {
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mobile-nav-link {
    padding: 12px 16px;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.mobile-nav-link:hover {
    background: var(--color-bg-alt);
    color: var(--color-text-primary);
}

/* ========================================
   移动端优化样式
   ======================================== */

@media (max-width: 768px) {
    .nav-cta {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .login-card {
        padding: 32px 24px;
    }
    
    .form-title {
        font-size: 24px;
    }
    
    .form-input {
        padding: 16px;
        font-size: 16px;
    }
    
    .captcha-btn {
        padding: 16px 12px;
        font-size: 13px;
    }
    
    .form-btn {
        padding: 18px;
        font-size: 16px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .stat-item {
        width: 100%;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .nav-container {
        padding: 0 16px;
    }
    
    .free-textarea {
        min-height: 200px;
        padding: 16px;
        font-size: 16px;
    }
    
    .save-btn {
        padding: 12px 28px;
        font-size: 15px;
    }
    
    .mood-btn {
        padding: 10px 14px;
        font-size: 14px;
    }
    
    .tool-btn {
        width: 40px;
        height: 40px;
    }
    
    .tool-btn svg {
        width: 20px;
        height: 20px;
    }
}