/* ==========================================
   AI痛症诊疗平台 - tcmpain.us
   Futuristic Dark Tech Design System
   ========================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* --- CSS Variables --- */
:root {
    --bg-deep: #0A0E27;
    --bg-dark: #0D1230;
    --bg-card: #111640;
    --bg-card-hover: #161B50;
    --bg-section: #0B0F2E;

    --cyan: #00D4FF;
    --cyan-dim: #00A8CC;
    --cyan-glow: rgba(0, 212, 255, 0.15);
    --purple: #7B2FBE;
    --purple-light: #9B59E0;
    --blue: #3B82F6;
    --gradient-primary: linear-gradient(135deg, #7B2FBE, #3B82F6);
    --gradient-accent: linear-gradient(135deg, #00D4FF, #7B2FBE);
    --gradient-hero: linear-gradient(135deg, #0A0E27 0%, #1A1050 40%, #0D1230 100%);

    --acupuncture-color: #00D4FF;
    --massage-color: #10B981;
    --tuina-color: #F59E0B;
    --moxibustion-color: #EF4444;
    --cupping-color: #8B5CF6;
    --health-color: #06B6D4;

    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);

    --border-glass: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 212, 255, 0.3);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-bg-hover: rgba(255, 255, 255, 0.08);

    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-neon: 0 0 20px rgba(0, 212, 255, 0.3), 0 0 40px rgba(0, 212, 255, 0.1);

    --radius: 16px;
    --radius-lg: 24px;
    --radius-full: 50px;
    --max-width: 1200px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
    color: var(--text-primary);
    background: var(--bg-deep);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; }

a {
    color: var(--cyan);
    text-decoration: none;
    transition: var(--transition);
}

a:hover { color: var(--purple-light); }

ul, ol { list-style: none; }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Typography --- */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: 1px;
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 3vw, 1.5rem); }
h4 { font-size: 1.1rem; }

.gradient-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.neon-text {
    color: var(--cyan);
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5), 0 0 20px rgba(0, 212, 255, 0.3);
}

.section-badge {
    display: inline-block;
    padding: 6px 20px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    margin-bottom: 16px;
}

.section-title p {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* --- Glass Morphism --- */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius);
    transition: var(--transition);
}

.glass-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.neon-border {
    border: 1px solid var(--border-glow);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.2), inset 0 0 15px rgba(0, 212, 255, 0.05);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
    letter-spacing: 1px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(123, 47, 190, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(123, 47, 190, 0.5);
    color: white;
}

.btn-neon {
    background: transparent;
    color: var(--cyan);
    border: 2px solid var(--cyan);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.2);
}

.btn-neon:hover {
    background: rgba(0, 212, 255, 0.1);
    box-shadow: var(--shadow-neon);
    color: var(--cyan);
    transform: translateY(-2px);
}

.btn-glow {
    background: var(--gradient-accent);
    color: white;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
    font-size: 1.1rem;
    padding: 16px 40px;
    animation: neonPulse 2s ease-in-out infinite;
}

.btn-glow:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.5);
    color: white;
}

.btn-sm {
    padding: 10px 24px;
    font-size: 0.9rem;
}

/* --- Header --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(10, 14, 39, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    text-decoration: none;
}

.logo a:hover { opacity: 0.9; color: var(--text-primary); }

.logo-icon {
    width: 42px;
    height: 42px;
    background: var(--gradient-accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
}

.logo-text-group {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 2px;
    line-height: 1.2;
}

.logo-sub {
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a {
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--cyan);
    transition: width 0.3s ease;
    border-radius: 1px;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 60%;
}

.nav-ai {
    color: var(--cyan) !important;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.nav-ai::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 8px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    opacity: 0;
    transition: var(--transition);
}

.nav-ai:hover::before {
    opacity: 1;
}

/* Mobile Menu */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    overflow: hidden;
    padding-top: 72px;
}

.hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 0%, var(--bg-deep) 70%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 40px 24px;
}

.hero-label {
    display: inline-block;
    padding: 8px 24px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-full);
    color: var(--cyan);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 2px;
    margin-bottom: 32px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: 4px;
}

.hero h1 .neon-text {
    display: block;
    font-size: clamp(3rem, 8vw, 5rem);
    letter-spacing: 8px;
}

.hero-subtitle {
    color: var(--text-secondary);
    font-size: 1.15rem;
    margin-bottom: 40px;
    line-height: 2;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    justify-content: center;
    flex-wrap: wrap;
}

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

.hero-stat .stat-number {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.hero-stat .stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* --- Section Common --- */
section {
    padding: 100px 0;
    position: relative;
}

.section-alt {
    background: var(--bg-section);
}

/* --- How It Works --- */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    position: relative;
}

.steps-grid::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan), var(--purple), var(--blue), transparent);
    opacity: 0.3;
    z-index: 0;
}

.step-card {
    text-align: center;
    padding: 40px 24px;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    margin: 0 auto 24px;
    box-shadow: 0 0 30px rgba(123, 47, 190, 0.3);
}

.step-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    display: block;
}

.step-card h3 {
    margin-bottom: 12px;
}

.step-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* --- Treatment Cards --- */
.treatments-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.treatment-card {
    padding: 36px 28px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.treatment-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    border-radius: 2px;
    transition: width 0.3s ease;
}

.treatment-card:hover::before {
    width: 100%;
}

.treatment-card[data-type="acupuncture"]::before { background: var(--acupuncture-color); }
.treatment-card[data-type="massage"]::before { background: var(--massage-color); }
.treatment-card[data-type="tuina"]::before { background: var(--tuina-color); }
.treatment-card[data-type="moxibustion"]::before { background: var(--moxibustion-color); }
.treatment-card[data-type="cupping"]::before { background: var(--cupping-color); }
.treatment-card[data-type="health"]::before { background: var(--health-color); }

.treatment-icon {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 20px;
    transition: var(--transition);
}

.treatment-card:hover .treatment-icon {
    transform: scale(1.1);
}

.treatment-icon.acupuncture { background: rgba(0, 212, 255, 0.1); color: var(--acupuncture-color); box-shadow: 0 0 20px rgba(0, 212, 255, 0.15); }
.treatment-icon.massage { background: rgba(16, 185, 129, 0.1); color: var(--massage-color); box-shadow: 0 0 20px rgba(16, 185, 129, 0.15); }
.treatment-icon.tuina { background: rgba(245, 158, 11, 0.1); color: var(--tuina-color); box-shadow: 0 0 20px rgba(245, 158, 11, 0.15); }
.treatment-icon.moxibustion { background: rgba(239, 68, 68, 0.1); color: var(--moxibustion-color); box-shadow: 0 0 20px rgba(239, 68, 68, 0.15); }
.treatment-icon.cupping { background: rgba(139, 92, 246, 0.1); color: var(--cupping-color); box-shadow: 0 0 20px rgba(139, 92, 246, 0.15); }
.treatment-icon.health { background: rgba(6, 182, 212, 0.1); color: var(--health-color); box-shadow: 0 0 20px rgba(6, 182, 212, 0.15); }

.treatment-card h3 {
    margin-bottom: 8px;
}

.treatment-card .treatment-en {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.treatment-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.treatment-card .card-link {
    font-size: 0.9rem;
    font-weight: 600;
}

/* --- CTA Banner --- */
.cta-banner {
    position: relative;
    padding: 80px 0;
    background: var(--bg-section);
    overflow: hidden;
}

.cta-inner {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 60px 40px;
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    background: rgba(0, 212, 255, 0.03);
    box-shadow: 0 0 60px rgba(0, 212, 255, 0.08);
    position: relative;
}

.cta-inner::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: var(--gradient-accent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.3;
}

.cta-icon {
    font-size: 3rem;
    margin-bottom: 24px;
    display: block;
    animation: brainPulse 3s ease-in-out infinite;
}

.cta-features {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 24px 0 32px;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.cta-feature i {
    color: var(--cyan);
    font-size: 0.8rem;
}

/* --- Trust Section --- */
.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.trust-card {
    padding: 32px 24px;
    text-align: center;
}

.trust-card i {
    font-size: 2rem;
    color: var(--cyan);
    margin-bottom: 16px;
    display: block;
}

.trust-card h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.trust-card p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* --- Footer --- */
.footer {
    background: rgba(5, 7, 20, 0.8);
    border-top: 1px solid var(--border-glass);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--glass-bg);
    border: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
}

.footer-social a:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--border-glow);
    color: var(--cyan);
}

.footer-col h4 {
    font-size: 1rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-col a {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 6px 0;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--cyan);
    transform: translateX(4px);
}

.footer-bottom {
    border-top: 1px solid var(--border-glass);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.footer-bottom a {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.footer-bottom a:hover {
    color: var(--cyan);
}

/* --- Page Hero (sub pages) --- */
.page-hero {
    padding: 140px 0 60px;
    text-align: center;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 120%, rgba(0, 212, 255, 0.05) 0%, transparent 60%);
}

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

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
    font-size: 0.85rem;
}

.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb span { color: var(--text-muted); }
.breadcrumb .current { color: var(--cyan); }

.page-hero h1 {
    margin-bottom: 16px;
}

.page-hero p {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================
   DIAGNOSIS PAGE STYLES
   ========================================== */

/* Diagnosis Features */
.diagnosis-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: -40px;
    position: relative;
    z-index: 2;
}

.diagnosis-feature {
    padding: 24px;
    text-align: center;
}

.diagnosis-feature i {
    font-size: 1.5rem;
    color: var(--cyan);
    margin-bottom: 12px;
    display: block;
}

.diagnosis-feature h4 { font-size: 0.95rem; margin-bottom: 6px; }
.diagnosis-feature p { font-size: 0.8rem; color: var(--text-muted); }

/* Wizard Container */
.wizard-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 0;
}

/* Progress Bar */
.progress-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 50px;
    padding: 0 20px;
}

.progress-step {
    display: flex;
    align-items: center;
    gap: 0;
}

.progress-dot {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
    transition: var(--transition);
    position: relative;
    flex-shrink: 0;
}

.progress-dot.active {
    background: var(--gradient-primary);
    border-color: var(--purple);
    color: white;
    box-shadow: 0 0 20px rgba(123, 47, 190, 0.4);
}

.progress-dot.completed {
    background: var(--cyan);
    border-color: var(--cyan);
    color: var(--bg-deep);
}

.progress-line {
    width: 60px;
    height: 2px;
    background: var(--border-glass);
    transition: var(--transition);
    flex-shrink: 0;
}

.progress-line.active {
    background: var(--gradient-accent);
}

/* Wizard Steps */
.wizard-step {
    display: none;
    animation: fadeIn 0.4s ease;
}

.wizard-step.active {
    display: block;
}

.wizard-step h2 {
    text-align: center;
    margin-bottom: 12px;
}

.wizard-step .step-desc {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 36px;
}

/* Body Map */
.body-map-container {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    justify-content: center;
    flex-wrap: wrap;
}

.body-map-svg {
    width: 280px;
    flex-shrink: 0;
}

.body-map-svg svg {
    width: 100%;
    height: auto;
}

.body-region {
    fill: rgba(255, 255, 255, 0.02);
    stroke: rgba(255, 255, 255, 0.15);
    stroke-width: 1;
    cursor: pointer;
    transition: all 0.3s ease;
}

.body-region:hover {
    fill: rgba(0, 212, 255, 0.1);
    stroke: var(--cyan);
    stroke-width: 1.5;
    filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.3));
}

.body-region.selected {
    fill: rgba(0, 212, 255, 0.2);
    stroke: var(--cyan);
    stroke-width: 2;
    filter: drop-shadow(0 0 12px rgba(0, 212, 255, 0.5));
}

.body-labels {
    flex: 1;
    min-width: 280px;
}

.body-labels h3 {
    margin-bottom: 16px;
    font-size: 1rem;
}

/* Option Grid */
.option-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
}

.option-btn {
    padding: 16px 12px;
    text-align: center;
    border-radius: var(--radius);
    background: var(--glass-bg);
    border: 1px solid var(--border-glass);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
}

.option-btn:hover {
    background: var(--glass-bg-hover);
    border-color: var(--border-glow);
    color: var(--text-primary);
}

.option-btn.selected {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--cyan);
    color: var(--cyan);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.15);
}

.option-btn .option-emoji {
    font-size: 1.8rem;
    display: block;
    margin-bottom: 8px;
}

.option-btn .option-label {
    font-size: 0.9rem;
    font-weight: 500;
    display: block;
}

.option-btn .option-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
    display: block;
}

/* Severity Scale */
.severity-scale {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.severity-btn {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: var(--glass-bg);
    border: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
}

.severity-btn:hover {
    border-color: var(--border-glow);
    transform: translateY(-2px);
}

.severity-btn.selected {
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.severity-btn.selected.low { background: #10B981; }
.severity-btn.selected.medium { background: #F59E0B; }
.severity-btn.selected.high { background: #EF4444; }

/* Duration Options */
.duration-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-top: 20px;
}

/* Checkbox Grid */
.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: var(--radius);
    background: var(--glass-bg);
    border: 1px solid var(--border-glass);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.checkbox-item:hover {
    background: var(--glass-bg-hover);
    border-color: var(--border-glow);
}

.checkbox-item.checked {
    background: rgba(0, 212, 255, 0.08);
    border-color: var(--cyan);
    color: var(--cyan);
}

.checkbox-item input {
    display: none;
}

.checkbox-icon {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 2px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition);
}

.checkbox-item.checked .checkbox-icon {
    background: var(--cyan);
    border-color: var(--cyan);
}

.checkbox-item.checked .checkbox-icon::after {
    content: '\2713';
    color: var(--bg-deep);
    font-size: 0.75rem;
    font-weight: 700;
}

/* Constitution Quick Check */
.constitution-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 30px;
}

.constitution-item {
    padding: 20px;
    border-radius: var(--radius);
    background: var(--glass-bg);
    border: 1px solid var(--border-glass);
}

.constitution-item h4 {
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.constitution-options {
    display: flex;
    gap: 10px;
}

.constitution-btn {
    flex: 1;
    padding: 10px;
    text-align: center;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.constitution-btn.selected {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--cyan);
    color: var(--cyan);
}

/* Wizard Navigation */
.wizard-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border-glass);
}

/* Analysis Animation */
.analysis-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10, 14, 39, 0.95);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.analysis-overlay.active {
    display: flex;
}

.analysis-brain {
    font-size: 5rem;
    animation: brainPulse 1.5s ease-in-out infinite;
    margin-bottom: 30px;
}

.analysis-ring {
    width: 120px;
    height: 120px;
    border: 3px solid transparent;
    border-top-color: var(--cyan);
    border-right-color: var(--purple);
    border-radius: 50%;
    animation: rotateRing 1.5s linear infinite;
    position: absolute;
}

.analysis-text {
    font-size: 1.2rem;
    color: var(--text-secondary);
    animation: fadeInOut 2s ease-in-out infinite;
}

.analysis-progress {
    width: 200px;
    height: 3px;
    background: var(--border-glass);
    border-radius: 2px;
    margin-top: 20px;
    overflow: hidden;
}

.analysis-progress-bar {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: 2px;
    transition: width 0.5s ease;
}

/* Results Section */
.result-container {
    display: none;
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 0;
}

.result-container.active {
    display: block;
}

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

.result-header h2 {
    margin-bottom: 12px;
}

.result-section {
    padding: 32px;
    margin-bottom: 24px;
}

.result-section h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.result-section h3 i {
    color: var(--cyan);
}

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

.result-tag {
    padding: 6px 14px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--cyan);
}

.syndrome-card {
    padding: 24px;
    background: rgba(123, 47, 190, 0.08);
    border: 1px solid rgba(123, 47, 190, 0.2);
    border-radius: var(--radius);
    margin-bottom: 16px;
}

.syndrome-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--purple-light);
    margin-bottom: 8px;
}

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

.confidence-track {
    flex: 1;
    height: 6px;
    background: var(--border-glass);
    border-radius: 3px;
    overflow: hidden;
}

.confidence-fill {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: 3px;
    transition: width 1s ease;
}

.confidence-label {
    font-size: 0.85rem;
    color: var(--cyan);
    font-weight: 600;
    white-space: nowrap;
}

/* Treatment Recommendation Bars */
.treatment-recs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.treatment-rec {
    padding: 20px;
    border-radius: var(--radius);
    background: var(--glass-bg);
    border: 1px solid var(--border-glass);
}

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

.treatment-rec-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.treatment-rec-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.rec-bar {
    height: 4px;
    background: var(--border-glass);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 8px;
}

.rec-bar-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 1s ease;
}

.rec-score {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Specific Treatment Details */
.treatment-detail {
    padding: 24px;
    border-radius: var(--radius);
    border-left: 3px solid;
    background: var(--glass-bg);
    margin-bottom: 16px;
}

.treatment-detail h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.treatment-detail ul {
    padding-left: 0;
}

.treatment-detail li {
    padding: 6px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.treatment-detail li::before {
    content: '•';
    color: var(--cyan);
    flex-shrink: 0;
}

/* Severity Indicator */
.severity-indicator {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    border-radius: var(--radius);
    margin-bottom: 16px;
}

.severity-indicator.green {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.severity-indicator.yellow {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.severity-indicator.red {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.severity-icon {
    font-size: 2rem;
}

.severity-info h4 { margin-bottom: 4px; }
.severity-info p { font-size: 0.9rem; color: var(--text-secondary); }

/* Disclaimer */
.disclaimer {
    padding: 20px;
    background: rgba(245, 158, 11, 0.05);
    border: 1px solid rgba(245, 158, 11, 0.15);
    border-radius: var(--radius);
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.8;
}

.disclaimer i {
    color: #F59E0B;
    margin-right: 6px;
}

/* Result Actions */
.result-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 40px;
    flex-wrap: wrap;
}

/* ==========================================
   TREATMENTS PAGE STYLES
   ========================================== */

.treatments-page-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 40px;
    align-items: start;
}

.treatments-sidebar {
    position: sticky;
    top: 96px;
    padding: 24px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
    margin-bottom: 4px;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: rgba(0, 212, 255, 0.08);
    color: var(--cyan);
}

.sidebar-nav a i {
    width: 20px;
    text-align: center;
}

.treatment-section {
    padding: 40px;
    margin-bottom: 24px;
    scroll-margin-top: 96px;
}

.treatment-section-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-glass);
}

.treatment-section-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.treatment-section-header h2 {
    font-size: 1.5rem;
}

.treatment-section-header .en-name {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.treatment-content h3 {
    margin: 24px 0 12px;
    font-size: 1.1rem;
}

.treatment-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.conditions-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 16px 0;
}

.condition-tag {
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    background: var(--glass-bg);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
}

.precaution-box {
    padding: 20px;
    background: rgba(245, 158, 11, 0.05);
    border: 1px solid rgba(245, 158, 11, 0.15);
    border-radius: var(--radius);
    margin-top: 20px;
}

.precaution-box h4 {
    color: #F59E0B;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.precaution-box li {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 4px 0;
}

/* ==========================================
   KNOWLEDGE PAGE STYLES
   ========================================== */

.search-bar {
    max-width: 600px;
    margin: 0 auto 40px;
    position: relative;
}

.search-bar input {
    width: 100%;
    padding: 16px 24px 16px 50px;
    border-radius: var(--radius-full);
    background: var(--glass-bg);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
    font-family: inherit;
}

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

.search-bar input:focus {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
}

.search-bar i {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.filter-tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.filter-tab {
    padding: 8px 20px;
    border-radius: var(--radius-full);
    background: var(--glass-bg);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    font-family: inherit;
}

.filter-tab:hover,
.filter-tab.active {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--cyan);
    color: var(--cyan);
}

.knowledge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 20px;
}

.knowledge-card {
    padding: 28px;
    cursor: pointer;
}

.knowledge-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.knowledge-card h3 {
    font-size: 1.1rem;
}

.knowledge-card .category-tag {
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    background: var(--gradient-primary);
    color: white;
    white-space: nowrap;
}

.knowledge-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.knowledge-card .treatment-icons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.treatment-mini-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    title: attr(data-title);
}

.knowledge-detail {
    display: none;
    padding: 20px 0 0;
    border-top: 1px solid var(--border-glass);
    margin-top: 16px;
}

.knowledge-detail.active {
    display: block;
}

.knowledge-detail h4 {
    margin: 16px 0 8px;
    font-size: 0.95rem;
    color: var(--cyan);
}

.knowledge-detail p,
.knowledge-detail li {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ==========================================
   FAQ PAGE STYLES
   ========================================== */

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-category {
    margin-bottom: 40px;
}

.faq-category h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 1.2rem;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-glass);
}

.faq-category h3 i {
    color: var(--cyan);
}

.faq-item {
    margin-bottom: 8px;
    border-radius: var(--radius);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--glass-bg);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    text-align: left;
    transition: var(--transition);
    font-family: inherit;
}

.faq-question:hover {
    background: var(--glass-bg-hover);
    border-color: var(--border-glow);
}

.faq-question i {
    color: var(--cyan);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item.active .faq-question {
    border-color: var(--border-glow);
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: rgba(0, 212, 255, 0.02);
    border: 1px solid var(--border-glow);
    border-top: none;
    border-bottom-left-radius: var(--radius);
    border-bottom-right-radius: var(--radius);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-inner {
    padding: 20px 24px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.8;
}

/* ==========================================
   CONTACT PAGE STYLES
   ========================================== */

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.contact-info-section h2 {
    margin-bottom: 16px;
}

.contact-info-section p {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.contact-info-cards {
    display: grid;
    gap: 16px;
}

.contact-info-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
}

.contact-info-card i {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(0, 212, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--cyan);
    flex-shrink: 0;
}

.contact-info-card h4 {
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.contact-info-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.contact-form-section {
    padding: 40px;
}

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

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 14px 18px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

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

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    border-color: var(--border-glow);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}

.contact-form select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='rgba(255,255,255,0.4)' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.contact-form select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.contact-form textarea {
    min-height: 140px;
    resize: vertical;
}

.contact-form .btn {
    width: 100%;
    justify-content: center;
    padding: 16px;
    font-size: 1rem;
}

/* ==========================================
   ANIMATIONS
   ========================================== */

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

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

@keyframes neonPulse {
    0%, 100% { box-shadow: 0 0 5px rgba(0, 212, 255, 0.3), 0 0 15px rgba(123, 47, 190, 0.2); }
    50% { box-shadow: 0 0 15px rgba(0, 212, 255, 0.5), 0 0 30px rgba(123, 47, 190, 0.3); }
}

@keyframes brainPulse {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5)); }
    50% { transform: scale(1.08); filter: drop-shadow(0 0 25px rgba(0, 212, 255, 0.8)); }
}

@keyframes rotateRing {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 1024px) {
    .treatments-page-layout {
        grid-template-columns: 1fr;
    }

    .treatments-sidebar {
        position: static;
        display: flex;
        overflow-x: auto;
        padding: 16px;
        gap: 4px;
    }

    .sidebar-nav {
        display: flex;
        gap: 4px;
        white-space: nowrap;
    }

    .sidebar-nav a {
        margin-bottom: 0;
        padding: 10px 14px;
        font-size: 0.85rem;
    }
}

@media (max-width: 768px) {
    .header-inner { height: 64px; }

    .nav-links {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 40px 24px;
        gap: 8px;
        z-index: 999;
    }

    .nav-links.open { display: flex; }

    .nav-links a {
        font-size: 1.1rem;
        padding: 16px;
        text-align: center;
    }

    .mobile-toggle { display: flex; }

    .hero { min-height: auto; padding: 120px 0 80px; }

    .hero h1 { letter-spacing: 2px; }
    .hero h1 .neon-text { letter-spacing: 4px; }

    .hero-stats { gap: 24px; }
    .hero-stat .stat-number { font-size: 1.5rem; }

    .steps-grid { grid-template-columns: 1fr; }
    .steps-grid::before { display: none; }

    .treatments-grid { grid-template-columns: 1fr; }

    .trust-grid { grid-template-columns: repeat(2, 1fr); }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    section { padding: 60px 0; }

    .diagnosis-features { grid-template-columns: repeat(2, 1fr); margin-top: -20px; }

    .body-map-container { flex-direction: column; align-items: center; }
    .body-map-svg { width: 220px; }

    .option-grid { grid-template-columns: repeat(2, 1fr); }

    .duration-grid { grid-template-columns: repeat(2, 1fr); }

    .checkbox-grid { grid-template-columns: 1fr; }

    .constitution-grid { grid-template-columns: 1fr; }

    .treatment-recs { grid-template-columns: 1fr; }

    .contact-layout { grid-template-columns: 1fr; }

    .knowledge-grid { grid-template-columns: 1fr; }

    .progress-line { width: 30px; }

    .cta-inner { padding: 40px 24px; }

    .page-hero { padding: 120px 0 50px; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }

    .hero-buttons { flex-direction: column; align-items: center; }

    .hero-stats { flex-direction: column; gap: 16px; }

    .severity-scale { gap: 6px; }
    .severity-btn { width: 44px; height: 44px; font-size: 0.95rem; }

    .trust-grid { grid-template-columns: 1fr; }

    .diagnosis-features { grid-template-columns: 1fr; }

    .option-grid { grid-template-columns: 1fr; }

    .filter-tabs { gap: 6px; }
    .filter-tab { padding: 6px 14px; font-size: 0.8rem; }

    .btn { padding: 12px 24px; font-size: 0.9rem; }
    .btn-glow { padding: 14px 32px; font-size: 1rem; }
}