/* ============================================================
   管控通 — Demo / Landing Page Styles
   ============================================================ */

/* ----- Custom Properties ----- */
:root {
    --color-navy: #0f172a;
    --color-navy-light: #1e293b;
    --color-navy-muted: #334155;
    --color-blue: #3b82f6;
    --color-blue-hover: #2563eb;
    --color-blue-light: #dbeafe;
    --color-blue-bg: #eff6ff;
    --color-blue-glow: rgba(59, 130, 246, 0.15);
    --color-red: #ef4444;
    --color-red-light: #fef2f2;
    --color-red-border: #fecaca;
    --color-green: #10b981;
    --color-green-light: #ecfdf5;
    --color-green-border: #a7f3d0;
    --color-yellow: #f59e0b;
    --color-yellow-light: #fffbeb;
    --color-yellow-border: #fde68a;
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 60px rgba(59, 130, 246, 0.15);

    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;

    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

/* ----- Reset ----- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--color-gray-800);
    background: var(--color-white);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: var(--font-sans);
    cursor: pointer;
}

/* ========== Navigation ========== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: background var(--transition-slow);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.nav-brand-text {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

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

.nav-cta {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    background: var(--color-blue);
    color: var(--color-white);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.nav-cta:hover {
    background: var(--color-blue-hover);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

/* ========== Hero ========== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-navy);
    overflow: hidden;
    padding: 120px 32px 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-glow {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
}

.hero-inner {
    position: relative;
    max-width: 800px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-blue);
    margin-bottom: 32px;
    letter-spacing: 0.01em;
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.hero-title-accent {
    background: linear-gradient(135deg, var(--color-blue) 0%, #818cf8 50%, #c084fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.7;
    max-width: 640px;
    margin: 0 auto 40px;
}

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

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--color-blue);
    color: var(--color-white);
    border-radius: 100px;
    font-size: 1rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.btn-hero-primary:hover {
    background: var(--color-blue-hover);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.4);
    transform: translateY(-2px);
}

.btn-hero-secondary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 14px 28px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.btn-hero-secondary:hover {
    color: var(--color-white);
}

.hero-stats {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
    align-items: center;
    gap: 32px;
    padding: 32px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

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

.hero-stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: -0.02em;
}

.hero-stat-label {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 4px;
    white-space: nowrap;
}

.hero-stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
}

/* ========== Sections ========== */
.section {
    padding: 100px 32px;
}

.section-dark {
    background: var(--color-navy);
    color: var(--color-white);
}

.section-inner {
    max-width: 1200px;
    margin: 0 auto;
}

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

.section-tag {
    display: inline-block;
    padding: 4px 14px;
    background: var(--color-blue-bg);
    color: var(--color-blue);
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: 16px;
}

.section-tag.light {
    background: rgba(59, 130, 246, 0.15);
    color: var(--color-blue);
}

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--color-gray-900);
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-title.light {
    color: var(--color-white);
}

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--color-gray-500);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.section-subtitle.light {
    color: rgba(255, 255, 255, 0.5);
}

/* ========== Features ========== */
.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.feature-card {
    padding: 32px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-slow);
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-gray-300);
    transform: translateY(-2px);
}

.feature-card-hero {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, var(--color-navy) 0%, #1e293b 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--color-white);
}

.feature-card-hero:hover {
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-blue-bg);
    color: var(--color-blue);
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
}

.feature-icon-lg {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.15);
    color: var(--color-blue);
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
}

.feature-title {
    font-size: 1.0625rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-gray-900);
}

.feature-title-lg {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 0.9375rem;
    color: var(--color-gray-500);
    line-height: 1.6;
}

.feature-desc-lg {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 640px;
}

/* Pipeline visualization */
.feature-pipeline {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
}

.pipeline-step {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    flex: 1;
}

.pipeline-step-num {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-blue);
    color: white;
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: 700;
    flex-shrink: 0;
}

.pipeline-step-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-white);
}

.pipeline-step-desc {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.45);
    margin-top: 2px;
}

.pipeline-arrow {
    color: rgba(255, 255, 255, 0.3);
    flex-shrink: 0;
}

/* ========== Architecture ========== */
.arch-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    padding: 48px 0;
    overflow-x: auto;
}

.arch-node {
    text-align: center;
    padding: 24px 16px;
    min-width: 130px;
    position: relative;
}

.arch-node-badge {
    position: absolute;
    top: 4px;
    left: 50%;
    transform: translateX(-50%);
    padding: 2px 10px;
    background: var(--color-blue);
    color: white;
    border-radius: 100px;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.03em;
}

.arch-node-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    margin: 0 auto 12px;
    color: var(--color-blue);
}

.arch-router .arch-node-icon,
.arch-classifier .arch-node-icon {
    background: rgba(59, 130, 246, 0.12);
    border-color: rgba(59, 130, 246, 0.25);
}

.arch-node-label {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 4px;
}

.arch-node-detail {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
    line-height: 1.5;
}

.arch-connector {
    display: flex;
    align-items: center;
    width: 40px;
    flex-shrink: 0;
}

.arch-connector-line {
    flex: 1;
    height: 2px;
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.3), rgba(59, 130, 246, 0.6));
}

.arch-connector-arrow {
    width: 0;
    height: 0;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-left: 6px solid rgba(59, 130, 246, 0.6);
}

.arch-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 48px;
}

.arch-detail-card {
    padding: 28px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
}

.arch-detail-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 16px;
}

.arch-detail-list {
    list-style: none;
}

.arch-detail-list li {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.5;
    padding: 6px 0;
    padding-left: 16px;
    position: relative;
}

.arch-detail-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 5px;
    height: 5px;
    background: var(--color-blue);
    border-radius: 50%;
}

/* ========== Accuracy ========== */
.accuracy-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}

.accuracy-card {
    padding: 24px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-slow);
}

.accuracy-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.accuracy-pass {
    border-top: 3px solid var(--color-green);
}

.accuracy-partial {
    border-top: 3px solid var(--color-yellow);
}

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

.accuracy-status {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: 700;
}

.accuracy-status.pass {
    background: var(--color-green-light);
    color: var(--color-green);
}

.accuracy-status.partial {
    background: var(--color-yellow-light);
    color: var(--color-yellow);
}

.accuracy-badge {
    padding: 2px 8px;
    background: var(--color-navy);
    color: white;
    border-radius: 4px;
    font-size: 0.6875rem;
    font-weight: 600;
    font-family: var(--font-mono);
}

.accuracy-item {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 6px;
}

.accuracy-desc {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    line-height: 1.5;
    margin-bottom: 16px;
}

.accuracy-result {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.accuracy-tag {
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.6875rem;
    font-weight: 600;
}

.accuracy-tag.china {
    background: #fef2f2;
    color: #dc2626;
}

.accuracy-tag.us {
    background: #eff6ff;
    color: #2563eb;
}

.accuracy-tag.us-miss {
    background: #fffbeb;
    color: #d97706;
}

.accuracy-summary {
    display: flex;
    align-items: center;
    gap: 40px;
    padding: 32px 40px;
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
}

.accuracy-score {
    text-align: center;
    flex-shrink: 0;
}

.accuracy-score-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-green);
    letter-spacing: -0.03em;
    line-height: 1;
}

.accuracy-score-value span {
    font-size: 1.5rem;
    color: var(--color-gray-400);
}

.accuracy-score-label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-top: 4px;
}

.accuracy-note {
    font-size: 0.9375rem;
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ========== Demo Section ========== */
.section-demo {
    background: var(--color-gray-50);
}

.demo-examples {
    margin-bottom: 32px;
}

.demo-examples-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-500);
    margin-bottom: 12px;
}

.demo-examples-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.demo-example-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    text-align: left;
}

.demo-example-btn:hover {
    border-color: var(--color-blue);
    box-shadow: 0 2px 12px rgba(59, 130, 246, 0.1);
    transform: translateY(-1px);
}

.demo-example-btn.active {
    border-color: var(--color-blue);
    background: var(--color-blue-bg);
}

.demo-example-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-blue-bg);
    color: var(--color-blue);
    border-radius: var(--radius-md);
}

.demo-example-name {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-800);
}

.demo-example-tags {
    display: block;
    font-size: 0.75rem;
    color: var(--color-gray-400);
    margin-top: 1px;
}

/* Demo workspace */
.demo-workspace {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    min-height: 500px;
}

.demo-input-panel {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.demo-input-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-gray-100);
}

.demo-input-header h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-gray-800);
}

.demo-form {
    padding: 24px;
}

.demo-textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--color-gray-800);
    line-height: 1.6;
    resize: vertical;
    min-height: 200px;
    transition: all var(--transition-fast);
}

.demo-textarea::placeholder {
    color: var(--color-gray-400);
}

.demo-textarea:focus {
    outline: none;
    border-color: var(--color-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: var(--color-white);
}

.demo-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
    gap: 12px;
}

.demo-jurisdictions {
    display: flex;
    gap: 8px;
}

.demo-jurisdiction {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
}

.demo-jurisdiction input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.demo-jurisdiction span {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-gray-500);
    transition: all var(--transition-fast);
}

.demo-jurisdiction.active span,
.demo-jurisdiction input:checked + span {
    background: var(--color-blue-bg);
    border-color: var(--color-blue);
    color: var(--color-blue);
}

.demo-submit-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: var(--color-blue);
    color: var(--color-white);
    border: none;
    border-radius: 100px;
    font-size: 0.9375rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.25);
    white-space: nowrap;
}

.demo-submit-btn:hover {
    background: var(--color-blue-hover);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
    transform: translateY(-1px);
}

.demo-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Demo results panel */
.demo-results-panel {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    min-height: 400px;
    display: flex;
    flex-direction: column;
}

.demo-placeholder {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--color-gray-400);
    padding: 40px;
}

.demo-placeholder p {
    font-size: 0.9375rem;
    font-weight: 500;
}

/* Hidden state override — ensures [hidden] wins over display: flex */
.demo-loading[hidden],
.demo-results[hidden],
.demo-error[hidden],
.demo-placeholder[hidden] {
    display: none !important;
}

/* Demo loading */
.demo-loading {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 40px;
}

.demo-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.demo-loading-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-700);
    text-align: center;
}

.demo-loading-desc {
    font-size: 0.875rem;
    color: var(--color-gray-400);
    text-align: center;
    margin-top: 4px;
}

/* Demo results */
.demo-results {
    padding: 24px;
    overflow-y: auto;
    max-height: 600px;
}

/* Summary card in demo results */
.demo-summary {
    padding: 20px;
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
}

.demo-summary.risk-high {
    background: linear-gradient(135deg, #fef2f2, #fff5f5);
    border: 1px solid var(--color-red-border);
}

.demo-summary.risk-medium {
    background: linear-gradient(135deg, #fffbeb, #fefce8);
    border: 1px solid var(--color-yellow-border);
}

.demo-summary.risk-low,
.demo-summary.risk-none {
    background: linear-gradient(135deg, #ecfdf5, #f0fdf4);
    border: 1px solid var(--color-green-border);
}

.demo-summary-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.demo-summary-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-gray-800);
}

.demo-summary-badge {
    padding: 3px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
}

.demo-summary-badge.high { background: var(--color-red); }
.demo-summary-badge.medium { background: var(--color-yellow); }
.demo-summary-badge.low, .demo-summary-badge.none { background: var(--color-green); }

.demo-summary-text {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* Demo item card */
.demo-item {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    margin-bottom: 12px;
    overflow: hidden;
    transition: box-shadow var(--transition-fast);
}

.demo-item:hover {
    box-shadow: var(--shadow-md);
}

.demo-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.demo-item-header:hover {
    background: var(--color-gray-50);
}

.demo-item-left {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.demo-item-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-800);
}

.demo-item-eccn {
    padding: 2px 8px;
    background: var(--color-navy);
    color: white;
    border-radius: 4px;
    font-size: 0.6875rem;
    font-weight: 600;
    font-family: var(--font-mono);
    flex-shrink: 0;
}

.demo-item-jurisdiction {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.6875rem;
    font-weight: 600;
    flex-shrink: 0;
}

.demo-item-jurisdiction.china {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.demo-item-jurisdiction.us {
    background: #eff6ff;
    color: #2563eb;
    border: 1px solid #bfdbfe;
}

.demo-item-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.demo-item-status {
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
}

.demo-item-status.controlled {
    background: var(--color-red-light);
    color: var(--color-red);
    border: 1px solid var(--color-red-border);
}

.demo-item-status.not-controlled {
    background: var(--color-green-light);
    color: var(--color-green);
    border: 1px solid var(--color-green-border);
}

.demo-item-expand {
    color: var(--color-gray-400);
    transition: transform var(--transition-base);
}

.demo-item.expanded .demo-item-expand {
    transform: rotate(180deg);
}

.demo-item-body {
    display: none;
    padding: 0 18px 18px;
    border-top: 1px solid var(--color-gray-100);
}

.demo-item.expanded .demo-item-body {
    display: block;
}

.demo-item-section {
    padding-top: 14px;
}

.demo-item-section-title {
    font-size: 0.6875rem;
    font-weight: 700;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
}

.demo-item-section-text {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.7;
}

.demo-trigger-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.demo-trigger-tag {
    padding: 3px 10px;
    background: var(--color-blue-bg);
    color: var(--color-blue);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
}

.demo-risk-note {
    padding: 10px 14px;
    background: var(--color-yellow-light);
    border: 1px solid var(--color-yellow-border);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-yellow);
    font-size: 0.8125rem;
    color: var(--color-gray-700);
    line-height: 1.6;
}

/* Demo disclaimer */
.demo-disclaimer {
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    color: var(--color-gray-400);
    line-height: 1.5;
}

/* Demo error */
.demo-error {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 40px;
}

.demo-error-text {
    font-size: 0.9375rem;
    color: var(--color-gray-500);
}

.demo-retry-btn {
    padding: 8px 20px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
}

.demo-retry-btn:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-sm);
}

/* ========== CTA ========== */
.section-cta {
    background: linear-gradient(135deg, var(--color-navy) 0%, #1e293b 100%);
    padding: 80px 32px;
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.cta-desc {
    font-size: 1.0625rem;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.6;
    margin-bottom: 32px;
}

.cta-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.btn-cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--color-blue);
    color: var(--color-white);
    border-radius: 100px;
    font-size: 1rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.btn-cta-primary:hover {
    background: var(--color-blue-hover);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.4);
    transform: translateY(-2px);
}

.btn-cta-secondary {
    display: inline-flex;
    align-items: center;
    padding: 14px 28px;
    color: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 100px;
    font-size: 1rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.btn-cta-secondary:hover {
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.3);
}

/* ========== Footer ========== */
.demo-footer {
    background: var(--color-navy);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 32px;
}

.demo-footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.demo-footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-white);
}

.demo-footer-text {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.35);
}

.demo-footer-copyright {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.25);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .accuracy-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .arch-flow {
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
    }

    .arch-connector {
        width: 30px;
    }

    .demo-workspace {
        grid-template-columns: 1fr;
    }

    .arch-details {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.25rem;
    }

    .hero-stats {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .hero-stat-divider {
        display: none;
    }

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

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

    .accuracy-summary {
        flex-direction: column;
        text-align: center;
    }

    .nav-links {
        display: none;
    }

    .section {
        padding: 64px 20px;
    }

    .hero {
        padding: 100px 20px 60px;
    }

    .demo-examples-grid {
        flex-direction: column;
    }

    .demo-options {
        flex-direction: column;
        align-items: stretch;
    }

    .demo-jurisdictions {
        justify-content: center;
    }

    .demo-submit-btn {
        justify-content: center;
    }

    .feature-pipeline {
        flex-direction: column;
    }

    .pipeline-arrow {
        transform: rotate(90deg);
    }

    .demo-footer-inner {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .accuracy-grid {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .section-title {
        font-size: 1.75rem;
    }
}