/* AI生态本质洞察报告 v3.3 - 五层闭环洞察框架 */
/* 基于清爽调研报告风格 + 本质洞察力 v2.2 */

/* ============ Design Tokens ============ */
:root {
    /* Core palette */
    --c-emerald: #059669;
    --c-emerald-dark: #047857;
    --c-emerald-light: #10B981;
    --c-emerald-50: #ECFDF5;
    --c-blue: #2563EB;
    --c-blue-light: #3B82F6;
    --c-blue-50: #EFF6FF;
    --c-violet: #7C3AED;
    --c-violet-light: #8B5CF6;
    --c-violet-50: #F5F3FF;
    --c-rose: #E11D48;
    --c-rose-light: #F43F5E;
    --c-amber: #D97706;
    --c-amber-light: #F59E0B;
    --c-sky: #0EA5E9;

    /* Neutrals */
    --c-gray-950: #0C0A09;
    --c-gray-900: #1C1917;
    --c-gray-800: #292524;
    --c-gray-700: #44403C;
    --c-gray-600: #57534E;
    --c-gray-500: #78716C;
    --c-gray-400: #A8A29E;
    --c-gray-300: #D6D3D1;
    --c-gray-200: #E7E5E4;
    --c-gray-100: #F5F5F4;
    --c-gray-50: #FAFAF9;
    --c-white: #FFFFFF;

    /* Semantic */
    --text-primary: var(--c-gray-900);
    --text-secondary: var(--c-gray-600);
    --text-muted: var(--c-gray-500);
    --border: var(--c-gray-200);
    --border-light: var(--c-gray-100);
    --bg-page: #F8FAFB;
    --bg-card: var(--c-white);

    /* Gradients */
    --grad-hero: linear-gradient(135deg, #059669 0%, #2563EB 50%, #7C3AED 100%);
    --grad-emerald: linear-gradient(135deg, #059669 0%, #10B981 100%);
    --grad-blue: linear-gradient(135deg, #2563EB 0%, #3B82F6 100%);
    --grad-violet: linear-gradient(135deg, #7C3AED 0%, #8B5CF6 100%);
    --grad-rose: linear-gradient(135deg, #E11D48 0%, #F43F5E 100%);
    --grad-glass: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);
    --grad-mesh: radial-gradient(at 20% 20%, rgba(5,150,105,0.08) 0%, transparent 50%),
                 radial-gradient(at 80% 80%, rgba(37,99,235,0.06) 0%, transparent 50%),
                 radial-gradient(at 50% 50%, rgba(124,58,237,0.04) 0%, transparent 50%);

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.04);
    --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(0,0,0,0.03);
    --shadow-glow-emerald: 0 4px 14px rgba(5,150,105,0.15);
    --shadow-glow-blue: 0 4px 14px rgba(37,99,235,0.15);
    --shadow-glow-violet: 0 4px 14px rgba(124,58,237,0.15);

    /* Spacing */
    --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px;
    --sp-5: 20px; --sp-6: 24px; --sp-8: 32px; --sp-10: 40px;
    --sp-12: 48px; --sp-16: 64px;

    /* Radius */
    --r-sm: 8px; --r-md: 12px; --r-lg: 16px; --r-xl: 20px; --r-2xl: 24px; --r-full: 9999px;

    /* Typography */
    --font: -apple-system, "SF Pro Display", "system-ui", "Segoe UI", "Noto Sans SC", Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Cascadia Code", "JetBrains Mono", monospace;

    /* Layout */
    --max-w: 960px;

    /* Transitions */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --t-fast: 150ms var(--ease);
    --t-normal: 250ms var(--ease);
    --t-slow: 400ms var(--ease);
}

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

body {
    font-family: var(--font);
    background: var(--bg-page);
    background-image: var(--grad-mesh);
    /* background-attachment: fixed 已移除 — 移动端每帧触发repaint */
    color: var(--text-primary);
    line-height: 1.65;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: var(--sp-8) var(--sp-6) var(--sp-16);
}

/* ============ Hero Section ============ */
.hero {
    position: relative;
    text-align: center;
    padding: var(--sp-12) var(--sp-6);
    margin-bottom: var(--sp-8);
    border-radius: var(--r-2xl);
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-lg);
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--grad-hero);
    opacity: 0.04;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--grad-hero);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--c-emerald-50), var(--c-blue-50));
    color: var(--c-emerald);
    border-radius: var(--r-full);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: var(--sp-4);
    border: 1px solid rgba(5,150,105,0.15);
    position: relative;
}

.hero-title {
    font-size: 34px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--sp-3);
    letter-spacing: -0.03em;
    background: var(--grad-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.7;
    position: relative;
}

.hero-version {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: var(--sp-4);
    padding: 4px 12px;
    background: var(--c-gray-100);
    border-radius: var(--r-full);
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    position: relative;
}

.hero-version .dot {
    width: 6px; height: 6px;
    background: var(--c-emerald);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

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

/* ============ Core Insight ============ */
.core-insight {
    background: var(--bg-card);
    border-radius: var(--r-xl);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--sp-6);
    overflow: hidden;
}

.core-insight-accent {
    height: 3px;
    background: var(--grad-emerald);
}

.core-insight-body {
    padding: var(--sp-6);
}

.core-insight-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    color: var(--c-emerald);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--sp-3);
}

.core-insight-label::before {
    content: '';
    width: 8px; height: 8px;
    background: var(--c-emerald);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.core-insight-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.6;
}

.core-insight-text em {
    color: var(--c-emerald);
    font-style: normal;
    background: linear-gradient(135deg, rgba(5,150,105,0.1), rgba(5,150,105,0.05));
    padding: 1px 6px;
    border-radius: 4px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-3);
    margin-top: var(--sp-5);
}

.stat-item {
    text-align: center;
    padding: var(--sp-4);
    background: var(--c-gray-50);
    border-radius: var(--r-md);
    border: 1px solid var(--border-light);
    transition: all var(--t-normal);
}

.stat-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.stat-num {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 2px;
}

.stat-num.emerald { color: var(--c-emerald); }
.stat-num.blue { color: var(--c-blue); }
.stat-num.violet { color: var(--c-violet); }
.stat-num.amber { color: var(--c-amber); }

.stat-text {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ============ Meta Insight (跨域元洞察) ============ */
.meta-insight {
    background: var(--bg-card);
    border-radius: var(--r-xl);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--sp-6);
    overflow: hidden;
}

.meta-insight-accent {
    height: 3px;
    background: linear-gradient(135deg, var(--c-violet) 0%, var(--c-blue) 50%, var(--c-emerald) 100%);
}

.meta-insight-body {
    padding: var(--sp-6);
}

.meta-insight-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    color: var(--c-violet);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--sp-2);
}

.meta-insight-label::before {
    content: '';
    width: 8px; height: 8px;
    background: var(--c-violet);
    border-radius: 50%;
}

.meta-insight-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--sp-2);
}

.meta-insight-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--sp-5);
}

.meta-insight-desc strong {
    color: var(--c-violet);
    background: rgba(124,58,237,0.08);
    padding: 1px 6px;
    border-radius: 4px;
}

.meta-evo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-3);
    flex-wrap: wrap;
}

.meta-evo-step {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    background: var(--c-gray-50);
    border-radius: var(--r-md);
    border: 1px solid var(--border-light);
    transition: all var(--t-normal);
}

.meta-evo-step.current {
    background: rgba(37,99,235,0.06);
    border-color: var(--c-blue);
}

.meta-evo-step.future {
    background: rgba(124,58,237,0.06);
    border-color: var(--c-violet);
}

.meta-evo-num {
    width: 28px; height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 13px;
    font-weight: 800;
    color: var(--c-white);
    background: var(--c-gray-400);
    flex-shrink: 0;
}

.meta-evo-step.current .meta-evo-num { background: var(--c-blue); }
.meta-evo-step.future .meta-evo-num { background: var(--c-violet); }

.meta-evo-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
}

.meta-evo-text small {
    font-size: 12px;
    font-weight: 400;
    color: var(--text-muted);
}

.meta-evo-arrow {
    color: var(--text-muted);
    font-size: 20px;
    font-weight: 700;
}

/* Meta Mapping Grid */
.meta-mapping {
    margin-top: var(--sp-5);
    padding-top: var(--sp-4);
    border-top: 1px solid var(--border-light);
}

.meta-mapping-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: var(--sp-3);
    letter-spacing: 0.03em;
}

.meta-mapping-grid {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.mm-row {
    display: grid;
    grid-template-columns: 70px 1fr 1fr 1fr;
    gap: var(--sp-2);
    padding: 5px var(--sp-2);
    border-radius: 4px;
    font-size: 12px;
    line-height: 1.5;
    transition: background var(--t-fast);
}

.mm-row:hover { background: var(--c-gray-50); }

.mm-obj {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 11px;
}

.mm-past {
    color: var(--text-muted);
    text-decoration: line-through;
    text-decoration-color: rgba(0,0,0,0.15);
}

.mm-now {
    color: var(--c-emerald);
    font-weight: 600;
}

.mm-next {
    color: var(--c-violet);
    font-weight: 500;
}

.meta-mapping-legend {
    display: flex;
    gap: var(--sp-4);
    margin-top: var(--sp-3);
    padding-top: var(--sp-2);
}

.mm-legend-item {
    font-size: 11px;
    color: var(--text-muted);
}

.mm-legend-item.past { color: var(--text-muted); }
.mm-legend-item.now { color: var(--c-emerald); }
.mm-legend-item.next { color: var(--c-violet); }

/* ============ Tab Navigation ============ */
.tab-nav {
    display: flex;
    gap: 4px;
    padding: 5px;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(10px) saturate(1.4);
    -webkit-backdrop-filter: blur(10px) saturate(1.4);
    will-change: backdrop-filter;
    border: 1px solid rgba(255,255,255,0.7);
    border-radius: var(--r-xl);
    box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0,0,0,0.03);
    position: sticky;
    top: 12px;
    z-index: 100;
    margin-bottom: var(--sp-6);
}

.tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-radius: var(--r-lg);
    cursor: pointer;
    font-family: var(--font);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    transition: all var(--t-normal);
    white-space: nowrap;
    position: relative;
}

.tab-btn:hover {
    background: var(--c-gray-50);
    color: var(--text-secondary);
}

.tab-btn.active {
    background: var(--grad-emerald);
    color: var(--c-white);
    box-shadow: var(--shadow-glow-emerald);
    font-weight: 600;
}

.tab-num {
    width: 22px; height: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--r-sm);
    font-size: 11px;
    font-weight: 700;
    background: rgba(0,0,0,0.05);
}

.tab-btn.active .tab-num {
    background: rgba(255,255,255,0.25);
}

/* ============ Tab Panel ============ */
.tab-panel {
    display: none;
    animation: panelIn 0.4s var(--ease);
}

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

@keyframes panelIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============ Section Overview (SVG Diagram) ============ */
.section-overview {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--r-xl);
    padding: var(--sp-6) var(--sp-6) var(--sp-5);
    margin-bottom: var(--sp-6);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.section-overview::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(5,150,105,0.03) 0%, rgba(37,99,235,0.02) 100%);
}

.overview-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    color: var(--c-emerald);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--sp-3);
    position: relative;
}

.overview-content {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* ============ Insight Card ============ */
.insight-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--r-xl);
    margin-bottom: var(--sp-4);
    overflow: hidden;
    box-shadow: var(--shadow-xs);
    transition: all var(--t-normal);
}

.insight-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border);
    transform: translateY(-1px);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding: var(--sp-4) var(--sp-5);
    background: var(--c-gray-50);
    border-bottom: 1px solid var(--border-light);
}

.card-level {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 26px;
    padding: 0 10px;
    border-radius: var(--r-sm);
    font-size: 11px;
    font-weight: 700;
    color: var(--c-white);
    background: var(--grad-emerald);
}

.card-level.domain { background: linear-gradient(135deg, #059669 0%, #2563EB 100%); }
.card-level.domain-blue { background: var(--grad-blue); }
.card-level.red { background: var(--grad-rose); }
.card-level.green { background: var(--grad-emerald); }
.card-level.blue { background: var(--grad-blue); }
.card-level.violet { background: var(--grad-violet); }

.card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
    letter-spacing: -0.01em;
}

.card-tag {
    padding: 3px 10px;
    border-radius: var(--r-full);
    font-size: 11px;
    font-weight: 600;
}

.card-tag.red { background: rgba(225,29,72,0.08); color: var(--c-rose); }
.card-tag.green { background: rgba(5,150,105,0.08); color: var(--c-emerald); }
.card-tag.blue { background: rgba(37,99,235,0.08); color: var(--c-blue); }
.card-tag.new { background: linear-gradient(135deg, rgba(5,150,105,0.1), rgba(37,99,235,0.1)); color: var(--c-emerald); }

/* Row styles */
.row {
    display: flex;
    padding: var(--sp-4) var(--sp-5);
    border-bottom: 1px solid var(--border-light);
    gap: var(--sp-4);
}

.row:last-child { border-bottom: none; }

.row.highlight {
    background: linear-gradient(135deg, rgba(5,150,105,0.03) 0%, rgba(5,150,105,0.01) 100%);
}

.row.analogy {
    background: linear-gradient(135deg, rgba(217,119,6,0.04) 0%, rgba(217,119,6,0.01) 100%);
}

.row-label {
    width: 64px;
    flex-shrink: 0;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    padding-top: 2px;
    letter-spacing: 0.02em;
}

.row-content {
    flex: 1;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.row-content strong { color: var(--text-primary); font-weight: 700; }

.row-content ul {
    margin: var(--sp-2) 0 0;
    padding-left: 18px;
}

.row-content li {
    margin-bottom: 4px;
    line-height: 1.6;
}

/* Evolution Box */
.evo-flow {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    margin-top: var(--sp-3);
    flex-wrap: wrap;
}

.evo-flow.vertical {
    flex-direction: column;
    align-items: flex-start;
}

.evo-step {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--c-gray-50);
    border-radius: var(--r-md);
    border: 1px solid var(--border-light);
    transition: all var(--t-fast);
}

.evo-step.active {
    background: rgba(5,150,105,0.08);
    border-color: var(--c-emerald);
}

.evo-tag {
    font-size: 10px;
    font-weight: 800;
    color: var(--c-emerald);
    padding: 2px 7px;
    background: rgba(5,150,105,0.1);
    border-radius: 4px;
    letter-spacing: 0.02em;
}

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

.evo-arrow { color: var(--text-muted); font-weight: 700; }

/* Motivation Box */
.moti-box {
    margin-top: var(--sp-3);
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
}

.moti-row {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-2);
    font-size: 13px;
    color: var(--text-secondary);
}

.moti-tag {
    font-size: 10px;
    font-weight: 700;
    color: var(--c-white);
    padding: 2px 8px;
    border-radius: 4px;
    flex-shrink: 0;
    background: var(--c-gray-500);
}

/* Comparison */
.compare-box {
    margin-top: var(--sp-3);
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
}

.compare-item {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding: 8px 14px;
    background: var(--c-gray-50);
    border-radius: var(--r-md);
    border: 1px solid var(--border-light);
}

.compare-item.warn {
    background: rgba(225,29,72,0.04);
    border-color: rgba(225,29,72,0.15);
}

.compare-tag {
    font-size: 10px;
    font-weight: 700;
    color: var(--c-blue);
    padding: 2px 8px;
    background: rgba(37,99,235,0.08);
    border-radius: 4px;
    flex-shrink: 0;
}

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

/* Three Laws */
.laws {
    margin-top: var(--sp-3);
    display: flex;
    flex-direction: column;
    gap: var(--sp-3);
}

.law {
    display: flex;
    gap: var(--sp-3);
    padding: var(--sp-3) var(--sp-4);
    background: var(--c-gray-50);
    border-radius: var(--r-md);
    border: 1px solid var(--border-light);
}

.law-num {
    width: 28px; height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--grad-emerald);
    color: var(--c-white);
    border-radius: 50%;
    font-size: 13px;
    font-weight: 800;
    flex-shrink: 0;
}

.law-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
}

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

/* Level Box */
.levels {
    margin-top: var(--sp-3);
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
}

.level-row {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding: 10px var(--sp-4);
    background: var(--c-gray-50);
    border-radius: var(--r-md);
    border: 1px solid var(--border-light);
}

.level-row.active {
    background: rgba(5,150,105,0.06);
    border-color: var(--c-emerald);
}

.level-badge {
    font-size: 10px;
    font-weight: 800;
    color: var(--c-white);
    padding: 3px 8px;
    background: var(--c-gray-500);
    border-radius: 4px;
    flex-shrink: 0;
}

.level-row.active .level-badge { background: var(--c-emerald); }

.level-name {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    min-width: 80px;
}

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

/* ============ Subsection Title ============ */
.sub-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    margin: var(--sp-8) 0 var(--sp-4);
    display: flex;
    align-items: center;
    gap: var(--sp-2);
}

.sub-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
    margin-left: var(--sp-3);
}

/* ============ People Grid ============ */
.people-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: var(--sp-4);
}

.person-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--r-xl);
    padding: var(--sp-5);
    transition: all var(--t-normal);
}

.person-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border);
    transform: translateY(-2px);
}

.person-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--sp-3);
    padding-bottom: var(--sp-3);
    border-bottom: 1px solid var(--border-light);
}

.person-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.person-org {
    font-size: 11px;
    font-weight: 600;
    color: var(--c-blue);
    padding: 3px 10px;
    background: rgba(37,99,235,0.08);
    border-radius: var(--r-full);
}

.person-info {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: var(--sp-2);
}

.person-analogy {
    font-size: 13px;
    color: var(--c-amber);
    background: rgba(217,119,6,0.06);
    padding: var(--sp-2) var(--sp-3);
    border-radius: var(--r-sm);
    margin-top: var(--sp-2);
    line-height: 1.6;
}

/* ============ Footer ============ */
.footer {
    text-align: center;
    padding-top: var(--sp-8);
    margin-top: var(--sp-10);
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 13px;
}

.footer a {
    color: var(--c-blue);
    text-decoration: none;
}

.footer a:hover { text-decoration: underline; }

/* ============ Update Badge ============ */
.update-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 2px 8px;
    background: rgba(5,150,105,0.1);
    color: var(--c-emerald);
    border-radius: var(--r-full);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.03em;
}

.update-badge::before {
    content: '';
    width: 5px; height: 5px;
    background: var(--c-emerald);
    border-radius: 50%;
}

/* ============ Data Callout ============ */
.data-callout {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background: var(--c-gray-100);
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--c-emerald-dark);
}

/* ============ Insight Table (Unified L3→L5) ============ */
.insight-table {
    padding: var(--sp-3) var(--sp-5) var(--sp-4);
    border-top: 1px solid var(--border-light);
}

.it-head {
    display: grid;
    grid-template-columns: 100px 1fr 1fr;
    gap: var(--sp-3);
    padding: var(--sp-2) var(--sp-3);
    border-bottom: 2px solid var(--border);
    margin-bottom: var(--sp-1);
}

.it-head span {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.it-section {
    padding: var(--sp-2) var(--sp-3) var(--sp-1);
}

.it-section-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 10px;
    border-radius: var(--r-full);
    letter-spacing: 0.03em;
}

.it-section.verified .it-section-tag {
    color: var(--c-emerald-dark);
    background: rgba(5,150,105,0.08);
}

.it-section.projected .it-section-tag {
    color: var(--c-violet);
    background: rgba(124,58,237,0.08);
}

.it-section.evolving .it-section-tag {
    color: var(--c-blue);
    background: rgba(37,99,235,0.08);
}

.it-row {
    display: grid;
    grid-template-columns: 100px 1fr 1fr;
    gap: var(--sp-3);
    padding: 7px var(--sp-3);
    border-radius: var(--r-sm);
    font-size: 13px;
    line-height: 1.6;
    transition: background var(--t-fast);
}

.it-row:hover {
    background: var(--c-gray-50);
}

.it-row.projected {
    background: rgba(124,58,237,0.02);
}

.it-row.projected:hover {
    background: rgba(124,58,237,0.05);
}

.it-row.evolving {
    background: rgba(37,99,235,0.02);
}

.it-row.evolving:hover {
    background: rgba(37,99,235,0.05);
}

.it-rule {
    font-weight: 600;
    color: var(--c-emerald-dark);
    font-size: 12px;
    padding-top: 1px;
}

.it-row.projected .it-rule {
    color: var(--c-violet);
}

.it-row.evolving .it-rule {
    color: var(--c-blue);
}

.it-reality {
    color: var(--text-primary);
    font-weight: 500;
}

.it-analogy {
    color: var(--text-secondary);
    padding-left: var(--sp-3);
    border-left: 2px solid var(--border-light);
}

.it-divider {
    border-top: 2px dashed var(--border);
    margin: var(--sp-3) var(--sp-3);
}

.it-verify {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: var(--sp-3);
    padding: 6px var(--sp-3);
    background: rgba(5,150,105,0.06);
    border-radius: var(--r-sm);
    font-size: 12px;
    font-weight: 600;
    color: var(--c-emerald-dark);
}

/* L5 Origin Marker */
.it-rule small {
    display: inline-block;
    font-size: 9px;
    font-weight: 500;
    color: var(--text-muted);
    opacity: 0.7;
    margin-left: 2px;
}

/* ============ Confidence Indicator (置信度) ============ */
.it-confidence {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: var(--sp-3);
    padding: 6px var(--sp-3);
    background: rgba(124,58,237,0.04);
    border-radius: var(--r-sm);
    border-left: 3px solid var(--c-violet);
    font-size: 11px;
    font-weight: 500;
    color: var(--c-violet);
    letter-spacing: 0.02em;
}

/* Row label colors (L1, L2 only) */
.row-label.l1 { color: var(--text-muted); }
.row-label.l2 { color: var(--c-emerald); }

/* ============ Responsive ============ */
@media (max-width: 768px) {
    .hero-title { font-size: 26px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .row { flex-direction: column; gap: var(--sp-1); }
    .row-label { width: 100%; }
    .people-grid { grid-template-columns: 1fr; }
    .evo-flow:not(.vertical) { flex-direction: column; align-items: flex-start; }
    .evo-arrow:not(.down) { display: none; }
    .meta-evo { flex-direction: column; }
    .meta-evo-arrow { display: none; }
    .mm-row { grid-template-columns: 60px 1fr 1fr 1fr; font-size: 11px; }
    .tab-nav { gap: 2px; padding: 4px; }
    .tab-btn { padding: 10px 8px; font-size: 13px; }
    /* Insight Table responsive */
    .it-head { display: none; }
    .it-row {
        grid-template-columns: 1fr;
        gap: 2px;
        padding: 6px var(--sp-3);
        border-left: 3px solid var(--border-light);
        margin-bottom: 4px;
    }
    .it-row.projected { border-left-color: rgba(124,58,237,0.3); }
    .it-row.evolving { border-left-color: rgba(37,99,235,0.3); }
    .it-rule { font-size: 11px; }
    .it-rule::before { content: '📏 '; }
    .it-reality::before { content: '📍 '; }
    .it-analogy { border-left: none; padding-left: 0; font-size: 12px; }
    .it-analogy::before { content: '💡 '; }
}

@media (max-width: 480px) {
    .container { padding: var(--sp-4) var(--sp-3) var(--sp-10); }
    .hero { padding: var(--sp-8) var(--sp-4); }
    .hero-title { font-size: 22px; }
}

/* 性能优化：尊重用户减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 性能优化：延迟渲染不可见Tab面板 */
.tab-panel:not(.active) {
    content-visibility: auto;
    contain-intrinsic-size: auto 500px;
}