/* TCM-MAD Web Styles - Enhanced v3 */

:root {
    --primary: #8B5CF6;
    --primary-light: #A78BFA;
    --primary-dark: #7C3AED;
    --primary-soft: #EDE9FE;
    --secondary: #10B981;
    --accent: #F59E0B;
    --danger: #EF4444;
    --bg: #F7F7F8;
    --bg-card: #FFFFFF;
    --text: #1A1A1A;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --border: #E5E7EB;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
    --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.15);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --font-serif: 'Noto Serif SC', 'STSong', 'SimSun', serif;
    --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms 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: var(--bg);
    color: var(--text);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Navbar ===== */
.navbar {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(229, 231, 235, 0.6);
    padding: 0.875rem 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: box-shadow var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.nav-brand:hover {
    transform: scale(1.02);
}

.nav-icon {
    font-size: 1.5rem;
    filter: drop-shadow(0 2px 4px rgba(139, 92, 246, 0.2));
}

.nav-links {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-xs);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 1px;
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

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

.nav-link:hover::after {
    width: 60%;
}

.nav-link.active {
    color: var(--primary);
    background: var(--primary-soft);
}

.nav-link.active::after {
    width: 60%;
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
}

/* ===== Hero Section ===== */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1280px;
    margin: 0 auto;
    padding: 5rem 2.5rem 4rem;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.04) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 1rem;
    background: var(--primary-soft);
    border: 1px solid rgba(139, 92, 246, 0.15);
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.hero-badge-dot {
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s ease infinite;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 3.25rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1.25rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, #6D28D9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-features {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.6s ease 0.4s both;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.125rem;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all var(--transition-fast);
}

.feature-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.feature-icon {
    font-size: 1.25rem;
    filter: drop-shadow(0 1px 2px rgba(0,0,0,0.1));
}

.feature-text {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1.0625rem;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(139, 92, 246, 0.35);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.6s ease 0.5s both;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(139, 92, 246, 0.45);
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:active {
    transform: translateY(0);
}

/* Hero Visual / Diagram */
.hero-visual {
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.diagram-container {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 2rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    position: relative;
}

.diagram-container::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
    border-radius: var(--radius) var(--radius) 0 0;
}

.layer {
    margin-bottom: 1.25rem;
    padding: 1rem;
    background: var(--bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    transition: all var(--transition-fast);
}

.layer:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
}

.layer:last-child {
    margin-bottom: 0;
}

.layer-title {
    font-size: 0.6875rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.625rem;
}

.layer-items {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    flex-wrap: wrap;
}

.layer-item {
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border-radius: var(--radius-xs);
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid var(--border);
    transition: all var(--transition-fast);
}

.layer-item:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.layer-item.jingfang {
    background: linear-gradient(135deg, #FEF3C7, #FDE68A);
    border-color: #F59E0B;
    color: #92400E;
}

.layer-item.zangfu {
    background: linear-gradient(135deg, #DBEAFE, #BFDBFE);
    border-color: #3B82F6;
    color: #1E40AF;
}

.vs {
    font-weight: 800;
    color: var(--primary);
    font-size: 0.8125rem;
    padding: 0.25rem 0.5rem;
    background: var(--primary-soft);
    border-radius: 4px;
}

.arrow {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.25rem;
    margin: 0.5rem 0;
    opacity: 0.5;
}

/* ===== Advantages Section ===== */
.advantages-section {
    max-width: 1280px;
    margin: 0 auto;
    padding: 5rem 2.5rem;
    position: relative;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.advantage-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.advantage-card:hover::before {
    opacity: 1;
}

.advantage-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.advantage-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.advantage-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== How It Works ===== */
.how-it-works {
    max-width: 1280px;
    margin: 0 auto;
    padding: 5rem 2.5rem;
    position: relative;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.25rem;
    text-align: center;
    margin-bottom: 3.5rem;
    color: var(--text);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 2px;
    margin: 1rem auto 0;
}

.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.step {
    text-align: center;
    padding: 2.5rem 1.5rem;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.step::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.step:hover::before {
    opacity: 1;
}

.step-number {
    width: 3.5rem;
    height: 3.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.375rem;
    font-weight: 700;
    margin: 0 auto 1.25rem;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
    transition: transform var(--transition-fast);
}

.step:hover .step-number {
    transform: scale(1.1);
}

.step-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.step-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Disclaimer Banner ===== */
.disclaimer-banner {
    background: linear-gradient(135deg, #FEF3C7, #FDE68A);
    border-top: 1px solid #F59E0B;
    padding: 1.5rem 2.5rem;
    position: relative;
}

.disclaimer-content {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.disclaimer-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    filter: drop-shadow(0 1px 2px rgba(0,0,0,0.1));
}

.disclaimer-text {
    font-size: 0.875rem;
    color: #92400E;
    line-height: 1.7;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding: 2.5rem;
    text-align: center;
}

.footer-disclaimer {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.footer-copyright {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ===== Questionnaire ===== */
.questionnaire-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
}

.questionnaire-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.questionnaire-title {
    font-family: var(--font-serif);
    font-size: 2.25rem;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.questionnaire-subtitle {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.9375rem;
}

/* Step Indicator */
.step-indicator {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    margin-bottom: 2rem;
}

.step-dot {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
    background: var(--bg);
    border: 2px solid var(--border);
    color: var(--text-muted);
    transition: all var(--transition-normal);
    position: relative;
    z-index: 2;
}

.step-dot.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-color: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.35);
    transform: scale(1.1);
}

.step-dot.completed {
    background: var(--secondary);
    border-color: var(--secondary);
    color: white;
}

.step-line {
    width: 2rem;
    height: 2px;
    background: var(--border);
    transition: all var(--transition-normal);
}

.step-line.completed {
    background: linear-gradient(90deg, var(--secondary), var(--secondary));
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    border-radius: 3px;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    width: 14.28%;
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

.progress-text {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Form */
.questionnaire-form {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 2.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
}

.form-step {
    display: none !important;
}

.form-step.active {
    display: block !important;
    animation: slideInRight 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-step-title {
    font-family: var(--font-serif);
    font-size: 1.375rem;
    margin-bottom: 1.75rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text);
}

.form-label .required {
    color: var(--danger);
    margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-xs);
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg);
    transition: all var(--transition-fast);
    color: var(--text);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
    background: var(--bg-card);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
    line-height: 1.7;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

/* Demo Actions */
.demo-actions {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

/* Skip Checkbox */
.form-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    margin-top: 0.5rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-xs);
    transition: all var(--transition-fast);
}

.form-checkbox:hover {
    background: var(--bg);
    color: var(--text-secondary);
}

.form-checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
    cursor: pointer;
}

/* Buttons */
.form-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.btn {
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-xs);
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
    border: 1.5px solid var(--border);
}

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

/* ===== Loading Overlay ===== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-content {
    text-align: center;
    padding: 2rem;
    max-width: 520px;
    width: 100%;
}

.loading-spinner {
    width: 64px;
    height: 64px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1.5rem;
}

.loading-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--text);
}

.loading-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    max-width: 480px;
    margin: 0 auto 2rem;
}

.loading-step {
    padding: 0.625rem 0.5rem;
    background: var(--bg);
    border-radius: var(--radius-xs);
    font-size: 0.8125rem;
    opacity: 0.4;
    transition: all var(--transition-normal);
    border: 1px solid transparent;
    font-weight: 500;
}

.loading-step.active {
    opacity: 1;
    background: var(--primary-soft);
    border-color: var(--primary-light);
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.15);
    transform: scale(1.02);
}

.loading-step.completed {
    opacity: 0.7;
    background: #D1FAE5;
    border-color: var(--secondary);
    color: #065F46;
}

.loading-hint {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 1rem;
}

.loading-log {
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--bg);
    border-radius: var(--radius-xs);
    font-family: 'SF Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: left;
    max-height: 120px;
    overflow-y: auto;
    border: 1px solid var(--border);
}

.loading-log-item {
    padding: 0.25rem 0;
    border-bottom: 1px solid var(--border);
    opacity: 0;
    animation: fadeIn 0.3s ease forwards;
}

.loading-log-item:last-child {
    border-bottom: none;
}

/* ===== Report Page ===== */
.report-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
}

.report-loading {
    text-align: center;
    padding: 4rem 2rem;
}

.report-header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--primary);
    position: relative;
}

.report-header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
}

.report-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.report-meta {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.report-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 1.75rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all var(--transition-fast);
}

.report-card:hover {
    box-shadow: var(--shadow-md);
}

.card-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text);
}

/* Conclusion Card Special */
.conclusion-card {
    border-left: 4px solid var(--primary);
    background: linear-gradient(135deg, var(--bg-card), var(--primary-soft));
}

/* Confidence Bars */
.confidence-bars {
    display: grid;
    gap: 1rem;
}

.confidence-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.confidence-label {
    width: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.confidence-bar-bg {
    flex: 1;
    height: 28px;
    background: var(--bg);
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.confidence-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    border-radius: 14px;
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 0.75rem;
    min-width: 40px;
}

.confidence-value {
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
}

/* Debate Section */
.debate-card {
    border-left: 4px solid var(--accent);
}

/* Debate Battle Card */
.debate-battle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--bg), #FEF3C7);
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.debate-fighter {
    text-align: center;
    padding: 1rem 1.5rem;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 2px solid var(--border);
    min-width: 140px;
    transition: all var(--transition-fast);
}

.debate-fighter:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.debate-fighter.jingfang-fighter {
    border-color: #F59E0B;
}

.debate-fighter.zangfu-fighter {
    border-color: #3B82F6;
}

.fighter-avatar {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.fighter-name {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.fighter-style {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.debate-vs {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    background: var(--primary-soft);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    box-shadow: var(--shadow);
}

.debate-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.75rem;
}

.debate-tab {
    padding: 0.625rem 1.25rem;
    background: none;
    border: none;
    border-radius: var(--radius-xs);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    font-family: inherit;
}

.debate-tab:hover {
    background: var(--bg);
    color: var(--text);
}

.debate-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.25);
}

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

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

.debate-round {
    margin-bottom: 1.5rem;
    padding: 1.25rem;
    background: var(--bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.debate-round h4 {
    font-size: 0.9375rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.debate-text {
    font-size: 0.875rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

/* Treatment Card */
.treatment-card {
    border-left: 4px solid var(--secondary);
}

/* Safety Card */
.safety-card {
    border-left: 4px solid var(--danger);
}

/* Disclaimer Card */
.disclaimer-card {
    border-left: 4px solid var(--accent);
    background: linear-gradient(135deg, var(--bg-card), #FEF3C7);
}

/* Report Actions */
.report-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

/* ===== Upload Area ===== */
.upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    background: var(--bg);
}

.upload-area:hover {
    border-color: var(--primary);
    background: var(--primary-soft);
}

.upload-area.dragover {
    border-color: var(--primary);
    background: var(--primary-soft);
    transform: scale(1.01);
}

.upload-input {
    display: none;
}

.upload-placeholder {
    pointer-events: none;
}

.upload-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 0.75rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.upload-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

.upload-preview {
    position: relative;
    display: inline-block;
}

.upload-preview img {
    max-width: 200px;
    max-height: 200px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    box-shadow: var(--shadow-md);
}

.upload-remove {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 28px;
    height: 28px;
    background: var(--danger);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
    transition: transform var(--transition-fast);
}

.upload-remove:hover {
    transform: scale(1.1);
}

/* ===== Review Section ===== */
.review-section {
    background: var(--bg);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
}

.review-section h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.review-item {
    display: flex;
    padding: 0.625rem 0;
    border-bottom: 1px solid var(--border);
    transition: background var(--transition-fast);
}

.review-item:hover {
    background: rgba(139, 92, 246, 0.02);
}

.review-item:last-child {
    border-bottom: none;
}

.review-label {
    width: 100px;
    font-weight: 600;
    color: var(--text-secondary);
    flex-shrink: 0;
    font-size: 0.875rem;
}

.review-value {
    flex: 1;
    color: var(--text);
    font-size: 0.9375rem;
}

/* ===== Modal ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

.modal-content h3 {
    margin-bottom: 1.25rem;
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--text);
}

.modal-body {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.modal-body p {
    margin-bottom: 0.75rem;
}

.modal-body strong {
    color: var(--text);
}

/* ===== History Page ===== */
.history-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
}

.history-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.history-title {
    font-family: var(--font-serif);
    font-size: 2.25rem;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.history-subtitle {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.history-list {
    display: grid;
    gap: 1rem;
}

.history-item {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 1.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all var(--transition-normal);
}

.history-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-color: var(--primary-light);
}

.history-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.history-date {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.history-id {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: 'SF Mono', monospace;
    background: var(--bg);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.history-item-body {
    margin-bottom: 1rem;
}

.history-info {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.history-gender,
.history-age {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    background: var(--bg);
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-weight: 500;
}

.history-symptom {
    font-size: 0.875rem;
    color: var(--text);
    line-height: 1.6;
}

.history-item-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
}

.history-empty {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.history-empty h3 {
    font-family: var(--font-serif);
    margin-bottom: 0.5rem;
    color: var(--text);
}

.history-empty p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.history-loading {
    text-align: center;
    padding: 3rem;
}

.error-message {
    color: var(--danger);
    text-align: center;
    padding: 2rem;
    font-weight: 500;
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateX(-50%) translateY(-10px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
        padding: 3rem 1.25rem 2rem;
        gap: 2.5rem;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-features {
        flex-wrap: wrap;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .steps {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .step {
        padding: 1.75rem 1.25rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .loading-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .navbar {
        padding: 0.75rem 1.25rem;
    }
    
    .nav-links {
        gap: 0.25rem;
    }
    
    .nav-link {
        padding: 0.375rem 0.75rem;
        font-size: 0.875rem;
    }
    
    .questionnaire-form {
        padding: 1.5rem;
    }
    
    .report-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .report-actions .btn {
        justify-content: center;
    }
    
    .debate-tabs {
        flex-wrap: wrap;
    }
    
    .confidence-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .confidence-label {
        width: auto;
    }
    
    .confidence-bar-bg {
        width: 100%;
    }
}

@media (max-width: 1024px) {
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.875rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .questionnaire-title,
    .history-title,
    .report-title {
        font-size: 1.625rem;
    }
    
    .loading-steps {
        grid-template-columns: 1fr;
    }
}

/* ===== Print Styles ===== */
@media print {
    .navbar,
    .footer,
    .report-actions,
    .disclaimer-banner {
        display: none;
    }
    
    .report-card {
        break-inside: avoid;
        border: 1px solid #ccc;
        box-shadow: none;
    }
    
    body {
        background: white;
    }
}