/* =============================================
   WizTree Website - Beautified Styles
   ============================================= */

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

:root {
    --primary: #4a90d9;
    --primary-dark: #357abd;
    --primary-light: #6ba3e0;
    --accent-green: #27ae60;
    --accent-orange: #f39c12;
    --accent-purple: #8e44ad;
    --accent-red: #e74c3c;
    --dark: #0f0f1a;
    --dark-2: #1a1a2e;
    --dark-3: #16213e;
    --light: #f8f9fa;
    --light-2: #eef1f5;
    --text: #2c3e50;
    --text-light: #5a6c7d;
    --text-muted: #8e9aaa;
    --white: #ffffff;
    --border: #e2e8f0;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
    --radius-sm: 8px;
    --radius: 16px;
    --radius-lg: 24px;
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.7;
    color: var(--text);
    background: var(--light);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ---------- Navigation ---------- */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    background: transparent;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(15, 15, 26, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 2px 30px rgba(0,0,0,0.25);
    padding: 0.75rem 2rem;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.5px;
}

.logo-icon { font-size: 1.7rem; }

.nav-menu {
    display: flex;
    gap: 2.2rem;
}

.nav-menu a {
    color: rgba(255,255,255,0.75);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.4rem 0;
    position: relative;
    transition: var(--transition);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-light);
    border-radius: 1px;
    transition: width 0.3s ease;
}

.nav-menu a:hover { color: var(--white); }
.nav-menu a:hover::after { width: 100%; }
.nav-menu a.active { color: var(--white); }
.nav-menu a.active::after { width: 100%; }

/* =============================================
   HERO SECTION
   ============================================= */
.home-hero {
    position: relative;
    background: linear-gradient(160deg, #0f0f1a 0%, #1a1a2e 35%, #1e3a5f 70%, #2c5f8a 100%);
    color: var(--white);
    padding: 140px 5rem 100px;
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 5rem;
    align-items: center;
    overflow: hidden;
}

/* Floating Particles */
.hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    border-radius: 50%;
    animation: floatUp 8s infinite ease-in-out;
}

.p1 { width: 6px; height: 6px; background: rgba(74,144,217,0.5); top: 20%; left: 10%; animation-delay: 0s; animation-duration: 7s; }
.p2 { width: 4px; height: 4px; background: rgba(46,204,113,0.4); top: 60%; left: 5%; animation-delay: 1s; animation-duration: 9s; }
.p3 { width: 8px; height: 8px; background: rgba(155,89,182,0.35); top: 30%; left: 80%; animation-delay: 2s; animation-duration: 8s; }
.p4 { width: 5px; height: 5px; background: rgba(241,196,15,0.4); top: 70%; left: 75%; animation-delay: 0.5s; animation-duration: 10s; }
.p5 { width: 3px; height: 3px; background: rgba(255,255,255,0.3); top: 40%; left: 45%; animation-delay: 3s; animation-duration: 6s; }
.p6 { width: 7px; height: 7px; background: rgba(231,76,60,0.35); top: 15%; left: 55%; animation-delay: 1.5s; animation-duration: 11s; }
.p7 { width: 4px; height: 4px; background: rgba(74,144,217,0.45); top: 80%; left: 30%; animation-delay: 2.5s; animation-duration: 7.5s; }
.p8 { width: 5px; height: 5px; background: rgba(46,204,113,0.3); top: 50%; left: 65%; animation-delay: 4s; animation-duration: 9.5s; }

@keyframes floatUp {
    0%, 100% { transform: translateY(0) scale(1); opacity: 1; }
    50% { transform: translateY(-40px) scale(1.5); opacity: 0.5; }
}

/* Hero Content */
.hero-content {
    position: relative;
    z-index: 2;
    animation: fadeInUp 0.8s ease;
}

.hero-badge {
    display: inline-block;
    background: rgba(74,144,217,0.15);
    border: 1px solid rgba(74,144,217,0.3);
    color: var(--primary-light);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.home-hero h1 {
    font-size: 3.8rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.2rem;
    letter-spacing: -1px;
}

.gradient-text {
    background: linear-gradient(135deg, #6ba3e0, #4ecdc4, #2ecc71);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.home-hero p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.8;
    line-height: 1.8;
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 30px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-dark);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}

.btn-arrow {
    transition: transform 0.3s ease;
}
.btn-primary:hover .btn-arrow { transform: translateX(4px); }

.btn-secondary {
    background: rgba(255,255,255,0.08);
    color: var(--white);
    border: 1.5px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.4);
    transform: translateY(-3px);
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.1rem;
    border-radius: 14px;
}

.hero-compat {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    opacity: 0.55;
    flex-wrap: wrap;
}

.hero-compat .dot { opacity: 0.4; }

/* Treemap Preview */
.hero-visual {
    position: relative;
    z-index: 2;
    animation: fadeInUp 0.8s ease 0.15s both;
}

.treemap-preview {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(3, 75px);
    gap: 10px;
    padding: 20px;
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
}

.tmb {
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tmb:hover {
    transform: scale(1.04);
    box-shadow: 0 0 25px rgba(255,255,255,0.15);
    z-index: 3;
}

.tmb-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: rgba(255,255,255,0.9);
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
    pointer-events: none;
}

.tmb-1 { background: linear-gradient(135deg, #e74c3c, #c0392b); }
.tmb-2 { background: linear-gradient(135deg, #4a90d9, #357abd); }
.tmb-3 { background: linear-gradient(135deg, #27ae60, #1e8449); }
.tmb-4 { background: linear-gradient(135deg, #f39c12, #d68910); }
.tmb-5 { background: linear-gradient(135deg, #8e44ad, #6c3483); }

.hero-visual-caption {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.85rem;
    opacity: 0.6;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.pulse-dot {
    width: 8px; height: 8px;
    background: #2ecc71;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.5); }
}

/* Wave Divider */
.hero-wave {
    position: absolute;
    bottom: -2px; left: 0; right: 0;
    z-index: 1;
    line-height: 0;
}

.hero-wave svg { width: 100%; height: 80px; }

/* =============================================
   STATS BAR
   ============================================= */
.stats-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--dark);
    padding: 3.5rem 2rem;
    gap: 0;
    flex-wrap: wrap;
    position: relative;
}

.stat-item {
    text-align: center;
    color: var(--white);
    padding: 0 3rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-item.animate-visible {
    opacity: 1;
    transform: translateY(0);
}

.stat-icon-circle {
    width: 56px; height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.8rem;
    font-size: 1.5rem;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
}

.stat-number {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, #6ba3e0, #4ecdc4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.45);
    margin-top: 0.3rem;
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.1), transparent);
}

/* =============================================
   SECTIONS (Shared)
   ============================================= */
.section {
    padding: 80px 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.home-section {
    padding: 100px 4rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary);
    background: rgba(74,144,217,0.08);
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 0.8rem;
    letter-spacing: -0.5px;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* =============================================
   FEATURES GRID
   ============================================= */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card.animate-visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.feature-card:hover::before { opacity: 1; }
.feature-card:nth-child(1)::before { background: linear-gradient(90deg, #4a90d9, #6ba3e0); }
.feature-card:nth-child(2)::before { background: linear-gradient(90deg, #27ae60, #2ecc71); }
.feature-card:nth-child(3)::before { background: linear-gradient(90deg, #f39c12, #f1c40f); }
.feature-card:nth-child(4)::before { background: linear-gradient(90deg, #8e44ad, #9b59b6); }

.feature-icon-wrap {
    width: 60px; height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.6rem;
}

.fc-blue   { background: linear-gradient(135deg, rgba(74,144,217,0.12), rgba(74,144,217,0.06)); }
.fc-green  { background: linear-gradient(135deg, rgba(39,174,96,0.12), rgba(39,174,96,0.06)); }
.fc-orange { background: linear-gradient(135deg, rgba(243,156,18,0.12), rgba(243,156,18,0.06)); }
.fc-purple { background: linear-gradient(135deg, rgba(142,68,173,0.12), rgba(142,68,173,0.06)); }

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.8rem;
    color: var(--dark);
    font-weight: 700;
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.feature-metric {
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.metric-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
}

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

/* =============================================
   ABOUT SECTION
   ============================================= */
.home-about {
    background: var(--light-2);
    padding: 100px 4rem;
    position: relative;
    overflow: hidden;
}

.home-about-bg-dots {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(74,144,217,0.06) 1px, transparent 1px);
    background-size: 30px 30px;
    pointer-events: none;
}

.about-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.about-text h2 {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--dark);
    letter-spacing: -0.5px;
}

.about-text > p {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.highlight-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1rem 1.2rem;
    background: var(--white);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.highlight-item.animate-visible {
    opacity: 1;
    transform: translateX(0);
}

.highlight-item:hover {
    box-shadow: var(--shadow);
    transform: translateX(6px);
    border-color: rgba(74,144,217,0.2);
}

.highlight-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    width: 44px; height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(74,144,217,0.07);
    border-radius: 10px;
}

.highlight-item strong {
    display: block;
    color: var(--dark);
    margin-bottom: 0.2rem;
    font-size: 0.95rem;
}

.highlight-item p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 0;
}

.btn-outline-dark {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 11px 24px;
    border: 2px solid var(--dark);
    border-radius: 10px;
    font-weight: 600;
    color: var(--dark);
    font-size: 0.95rem;
    transition: var(--transition);
}

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

/* About Treemap */
.about-visual { text-align: center; }

.treemap-demo-large {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 100px);
    gap: 10px;
    padding: 20px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.tdm {
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    position: relative;
    cursor: pointer;
}

.tdm:hover {
    transform: scale(1.04);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
    z-index: 2;
}

.tdm-label {
    font-size: 0.78rem;
    font-weight: 700;
    color: rgba(255,255,255,0.95);
    text-align: center;
    line-height: 1.3;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.tdm-label small {
    display: block;
    font-weight: 400;
    font-size: 0.68rem;
    opacity: 0.75;
    margin-top: 2px;
}

.tdm-1 { grid-column: span 2; grid-row: span 2; background: linear-gradient(135deg, #e74c3c, #c0392b); }
.tdm-2 { background: linear-gradient(135deg, #4a90d9, #357abd); }
.tdm-3 { background: linear-gradient(135deg, #27ae60, #1e8449); }
.tdm-4 { background: linear-gradient(135deg, #f39c12, #d68910); }
.tdm-5 { grid-column: span 2; background: linear-gradient(135deg, #8e44ad, #6c3483); }
.tdm-6 { background: linear-gradient(135deg, #3498db, #2471a3); }

.about-visual-caption {
    margin-top: 1rem;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.legend-dot {
    display: inline-block;
    width: 10px; height: 10px;
    border-radius: 3px;
    vertical-align: middle;
}
.legend-dot.red    { background: #e74c3c; }
.legend-dot.blue   { background: #4a90d9; }
.legend-dot.green  { background: #27ae60; }
.legend-dot.orange { background: #f39c12; }

/* =============================================
   TRUST / TESTIMONIALS SECTION
   ============================================= */
.home-trust {
    padding: 120px 4rem;
    background: linear-gradient(180deg, #f8fafc 0%, #eef2f7 50%, #f8fafc 100%);
    position: relative;
    overflow: hidden;
}

.home-trust::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(74,144,217,0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.home-trust::after {
    content: '';
    position: absolute;
    bottom: -150px;
    left: -150px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(39,174,96,0.05) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.trust-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.trust-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    border: 1px solid rgba(226,232,240,0.6);
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(30px);
    box-shadow: 0 4px 24px rgba(15,15,26,0.04);
    overflow: hidden;
}

.trust-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent-green));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.trust-card:nth-child(2)::before {
    background: linear-gradient(90deg, var(--accent-green), var(--accent-orange));
}

.trust-card:nth-child(3)::before {
    background: linear-gradient(90deg, var(--accent-orange), var(--accent-purple));
}

.trust-card.animate-visible {
    opacity: 1;
    transform: translateY(0);
}

.trust-card:hover {
    box-shadow: 0 20px 50px rgba(15,15,26,0.10);
    transform: translateY(-8px);
    border-color: transparent;
}

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

/* Star Rating */
.trust-stars {
    display: flex;
    gap: 3px;
    margin-bottom: 1rem;
}

.trust-stars span {
    font-size: 1.1rem;
    color: #f39c12;
    line-height: 1;
}

/* Quote Icon */
.trust-quote-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.2rem;
    box-shadow: 0 6px 16px rgba(74,144,217,0.25);
}

.trust-card:nth-child(2) .trust-quote-icon {
    background: linear-gradient(135deg, var(--accent-green), #1e8449);
    box-shadow: 0 6px 16px rgba(39,174,96,0.25);
}

.trust-card:nth-child(3) .trust-quote-icon {
    background: linear-gradient(135deg, var(--accent-orange), #d35400);
    box-shadow: 0 6px 16px rgba(243,156,18,0.25);
}

.trust-quote-icon svg {
    width: 22px;
    height: 22px;
    fill: var(--white);
    opacity: 0.95;
}

/* Testimonial Text */
.trust-card p {
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.85;
    margin-bottom: 1.8rem;
    font-style: normal;
    position: relative;
    z-index: 1;
}

/* Author Section */
.trust-author {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: 1.2rem;
    border-top: 1px solid rgba(226,232,240,0.8);
}

.trust-avatar {
    width: 48px; height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    background: linear-gradient(135deg, #eef2f7, #e2e8f0);
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.trust-author strong {
    display: block;
    font-size: 0.95rem;
    color: var(--dark);
    font-weight: 600;
    margin-bottom: 2px;
}

.trust-author span {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* =============================================
   CTA SECTION
   ============================================= */
.home-cta {
    background: linear-gradient(160deg, #0f0f1a 0%, #1a1a2e 50%, #1e3a5f 100%);
    padding: 100px 4rem;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.cta-glow {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(74,144,217,0.12) 0%, transparent 70%);
    pointer-events: none;
}

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

.home-cta h2 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.home-cta p {
    font-size: 1.1rem;
    opacity: 0.7;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.btn-cta-primary {
    background: linear-gradient(135deg, #4a90d9, #357abd);
    color: var(--white);
    padding: 16px 40px;
    border-radius: 14px;
    font-size: 1.1rem;
    font-weight: 700;
    box-shadow: 0 8px 30px rgba(74,144,217,0.35);
    transition: var(--transition);
}

.btn-cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(74,144,217,0.5);
}

.btn-cta-secondary {
    padding: 16px 40px;
    border-radius: 14px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.25);
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.btn-cta-secondary:hover {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-3px);
}

.btn-icon { font-size: 1.2rem; }

.cta-features {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.cta-feature-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    opacity: 0.55;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 4rem 4rem 2rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2.5rem;
}

.footer-section h3 {
    font-size: 1.1rem;
    margin-bottom: 1.2rem;
    font-weight: 700;
}

.footer-tagline {
    margin-top: 0.3rem;
    opacity: 0.5;
    font-size: 0.9rem;
}

.footer-copy {
    margin-top: 0.3rem;
    opacity: 0.4;
    font-size: 0.85rem;
}

.footer-section ul li {
    margin-bottom: 0.7rem;
}

.footer-section ul li,
.footer-section a {
    color: rgba(255,255,255,0.5);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.06);
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.35;
}

/* =============================================
   SUB-PAGE: Page Header
   ============================================= */
.page-header {
    background: linear-gradient(160deg, #0f0f1a 0%, #1a1a2e 50%, #1e3a5f 100%);
    color: var(--white);
    padding: 150px 2rem 70px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.6rem;
    font-weight: 800;
    margin-bottom: 0.8rem;
    letter-spacing: -0.5px;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.7;
    max-width: 550px;
    margin: 0 auto;
}

/* =============================================
   SUB-PAGE: Unified Sections
   ============================================= */
.sub-section {
    padding: 90px 2rem;
    background: var(--white);
}

.sub-section .section-header { margin-bottom: 3rem; }

.sub-section-alt {
    padding: 90px 2rem;
    background: var(--light-2);
}

.sub-section .container,
.sub-section-alt .container {
    max-width: 1200px;
    margin: 0 auto;
}

/* =============================================
   SUB-PAGE: Feature Detail Rows (features.html)
   ============================================= */
.feature-detail { padding: 90px 2rem; background: var(--white); }

.feature-row {
    max-width: 1200px;
    margin: 0 auto 2.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
    align-items: center;
    background: var(--light);
    padding: 2.5rem 3rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.feature-row:last-child { margin-bottom: 0; }

.feature-row:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.feature-visual {
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-visual .demo-box {
    width: 100%;
    min-height: 260px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
}

.feature-text h2 {
    color: var(--dark);
    margin-bottom: 0.8rem;
    font-size: 1.6rem;
    font-weight: 700;
}

.feature-text p {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.8;
    font-size: 0.98rem;
}

.feature-text ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.feature-text li {
    padding: 0.35rem 0;
    color: var(--text);
    font-size: 0.95rem;
}

.feature-text li::before {
    content: '\2714 ';
    color: var(--accent-green);
    font-weight: bold;
    margin-right: 0.3rem;
}

/* Speed Bars */
.speed-bars { margin: 1.2rem 0; }

.speed-item { margin-bottom: 1rem; }

.speed-item span {
    display: block;
    margin-bottom: 0.4rem;
    font-size: 0.88rem;
    color: var(--text-muted);
    font-weight: 500;
}

.speed-item .bar {
    height: 26px;
    border-radius: 6px;
    transition: width 0.8s ease;
}

.bar.slow { width: 28%; background: linear-gradient(90deg, #e74c3c, #f39c12); }
.bar.fast { width: 100%; background: linear-gradient(90deg, #4a90d9, #2ecc71); }

/* =============================================
   SUB-PAGE: CTA Section (simple, for sub pages)
   ============================================= */
.cta-section {
    background: linear-gradient(160deg, #0f0f1a 0%, #1a1a2e 50%, #1e3a5f 100%);
    padding: 80px 2rem;
    text-align: center;
    color: var(--white);
}

.cta-title {
    color: var(--white);
    font-size: 2rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.cta-desc {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.7;
}

/* =============================================
   SUB-PAGE: Info Cards (download.html, contact.html)
   ============================================= */
.info-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    max-width: 800px;
    margin: 0 auto 1.5rem;
    text-align: left;
}

.info-card h3 {
    color: var(--dark);
    margin-bottom: 0;
    font-size: 1.15rem;
}

.info-card-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1.2rem;
}

.info-card-icon {
    font-size: 1.5rem;
    width: 42px; height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(74,144,217,0.06);
    border-radius: 10px;
    flex-shrink: 0;
}

.info-card ol,
.info-card ul {
    padding-left: 1.5rem;
    line-height: 2;
    color: var(--text-light);
}

.code-block {
    background: #1a1a2e;
    color: #e2e8f0;
    padding: 1.2rem 1.5rem;
    border-radius: var(--radius-sm);
    font-family: 'Cascadia Code', 'Fira Code', 'Courier New', monospace;
    font-size: 0.85rem;
    margin-top: 1rem;
    word-break: break-all;
    line-height: 1.8;
    overflow-x: auto;
}

/* =============================================
   SUB-PAGE: Contact Form (contact.html)
   ============================================= */
.contact-container {
    max-width: 800px;
    margin: 0 auto;
}

.contact-form {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.contact-form h3 {
    color: var(--dark);
    font-size: 1.3rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--light);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(74,144,217,0.1);
    background: var(--white);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* Contact Info */
.contact-info {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.contact-info h3 {
    margin-bottom: 1rem;
    color: var(--dark);
    font-size: 1.2rem;
}

.contact-info ul {
    list-style: none;
    line-height: 2.5;
    color: var(--text-light);
}

.contact-info-tip {
    margin-top: 1.5rem;
    padding: 1rem 1.2rem;
    background: rgba(74,144,217,0.06);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--primary);
    font-size: 0.9rem;
    color: var(--text-light);
}

/* =============================================
   SUB-PAGE: FAQ (contact.html)
   ============================================= */
.faq-item {
    background: var(--white);
    padding: 1.5rem;
    margin-bottom: 0.8rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow);
    border-color: rgba(74,144,217,0.2);
}

.faq-question {
    font-weight: 600;
    color: var(--dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-toggle {
    font-size: 1.3rem;
    color: var(--primary);
    transition: var(--transition);
    flex-shrink: 0;
    margin-left: 1rem;
}

.faq-answer {
    margin-top: 1rem;
    display: none;
    color: var(--text-light);
    line-height: 1.8;
}

.faq-item.active .faq-answer { display: block; }

/* =============================================
   SUB-PAGE: Download Cards tweaks
   ============================================= */
.download-section { background: var(--light); }

/* Version Timeline */
.version-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.version-item {
    position: relative;
    margin-bottom: 1.5rem;
}

.version-marker {
    position: absolute;
    top: 1.5rem; left: -52px;
    background: var(--primary);
    color: var(--white);
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 700;
    white-space: nowrap;
}

.version-card { margin-bottom: 0; margin-left: 0; }

/* Install Grid (download.html) */
.install-grid {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.download-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    text-align: center;
    position: relative;
    transition: var(--transition);
}

.download-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.download-card.featured {
    border: 2px solid var(--primary);
    box-shadow: 0 0 0 4px rgba(74,144,217,0.08);
}

.download-card .card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
    font-weight: 700;
}

.download-card .tagline {
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.download-card ul {
    list-style: none;
    text-align: left;
    margin: 1rem 0;
}

.download-card li {
    padding: 0.3rem 0;
    color: var(--text-light);
    font-size: 0.9rem;
}

.download-card .version-info {
    color: var(--primary);
    font-weight: 700;
    font-size: 1.1rem;
    margin: 1rem 0;
}

.download-card .size-info {
    color: var(--text-muted);
    font-size: 0.82rem;
    margin-bottom: 1rem;
}

.download-btn {
    display: inline-block;
    padding: 12px 32px;
    background: var(--primary);
    color: var(--white);
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.download-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74,144,217,0.3);
}

/* --- 双下载按钮组 --- */
.download-btns-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    margin-top: 4px;
}

.download-btns-group .download-btn {
    width: 100%;
    text-align: center;
    padding: 11px 20px;
    font-size: 0.95rem;
}

.download-btn-quark {
    background: linear-gradient(135deg, #ff7043, #ff5722);
}
.download-btn-quark:hover {
    background: linear-gradient(135deg, #e64a19, #bf360c);
    box-shadow: 0 6px 20px rgba(255,112,67,0.35);
}

.download-btn-baidu {
    background: linear-gradient(135deg, #2196f3, #1565c0);
}
.download-btn-baidu:hover {
    background: linear-gradient(135deg, #1976d2, #0d47a1);
    box-shadow: 0 6px 20px rgba(33,150,243,0.35);
}

/* --- CTA区域双按钮 --- */
.cta-download-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 8px;
}

.badge {
    position: absolute;
    top: -12px;
    right: -12px;
    background: var(--accent-red);
    color: var(--white);
    padding: 5px 14px;
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(231,76,60,0.3);
}

/* =============================================
   SUB-PAGE: Tutorial Cards (contact.html)
   ============================================= */
.tutorial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.tutorial-card {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: var(--transition);
}

.tutorial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.tutorial-card .tutorial-visual {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
}

.tutorial-visual.tut-1 { background: linear-gradient(135deg, rgba(74,144,217,0.08), rgba(107,163,224,0.04)); }
.tutorial-visual.tut-2 { background: linear-gradient(135deg, rgba(39,174,96,0.08), rgba(46,204,113,0.04)); }
.tutorial-visual.tut-3 { background: linear-gradient(135deg, rgba(243,156,18,0.08), rgba(241,196,15,0.04)); }

.tutorial-card .tutorial-body {
    padding: 1.5rem;
}

.tutorial-card h3 {
    color: var(--dark);
    margin-bottom: 0.5rem;
    font-size: 1.15rem;
}

.tutorial-card p {
    color: var(--text-light);
    margin-bottom: 1rem;
    font-size: 0.92rem;
}

.tutorial-card .more-link {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.tutorial-card .more-link:hover {
    color: var(--primary-dark);
}

/* =============================================
   ANIMATIONS
   ============================================= */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}

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

.animate-hidden {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
    .home-hero {
        grid-template-columns: 1fr;
        gap: 3rem;
        padding: 120px 2rem 80px;
        min-height: auto;
    }

    .home-hero h1 { font-size: 2.6rem; }

    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .home-section { padding: 70px 2rem; }
    .home-about { padding: 70px 2rem; }
    .home-trust { padding: 70px 2rem; }
    .home-cta { padding: 70px 2rem; }

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

@media (max-width: 768px) {
    .home-hero { padding: 110px 1.5rem 60px; }
    .home-hero h1 { font-size: 2.2rem; }
    .hero-buttons { flex-direction: column; }
    .hero-compat { font-size: 0.78rem; }

    .stats-bar {
        gap: 2rem;
        padding: 2.5rem 1.5rem;
    }
    .stat-item { padding: 0 1rem; }
    .stat-divider { display: none; }

    .section-title { font-size: 2rem; }

    .home-section { padding: 50px 1.5rem; }
    .home-about { padding: 50px 1.5rem; }
    .home-trust { padding: 50px 1.5rem; }
    .home-cta { padding: 50px 1.5rem; }
    .home-cta h2 { font-size: 2rem; }

    .nav-menu { gap: 1.2rem; font-size: 0.9rem; }
    .nav-logo { font-size: 1.2rem; }

    .footer-content { grid-template-columns: 1fr; gap: 2rem; }
    .footer { padding: 3rem 1.5rem 1.5rem; }

    .about-visual { order: -1; }
    .treemap-demo-large { grid-template-rows: repeat(3, 70px); }
    .treemap-preview { grid-template-rows: repeat(3, 55px); gap: 6px; }

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

    /* Sub-pages */
    .feature-row {
        grid-template-columns: 1fr;
        padding: 2rem;
        gap: 2rem;
    }
    .feature-visual .demo-box { min-height: 200px; }

    .page-header { padding: 120px 1.5rem 50px; }
    .page-header h1 { font-size: 2rem; }

    .about-content { grid-template-columns: 1fr; }

    .download-cards { grid-template-columns: 1fr; }

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

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

    .sub-section { padding: 60px 1.5rem; }
    .sub-section-alt { padding: 60px 1.5rem; }
    .feature-detail { padding: 60px 1.5rem; }

    .version-marker { left: -38px; }
}

@media (max-width: 480px) {
    .home-hero { padding: 100px 1rem 50px; }
    .home-hero h1 { font-size: 1.8rem; }
    .home-hero p { font-size: 0.95rem; }

    .hero-wave svg { height: 40px; }

    .stats-bar { padding: 2rem 1rem; gap: 1.5rem; }
    .stat-number { font-size: 1.6rem; }

    .section-title { font-size: 1.7rem; }
    .home-section { padding: 40px 1rem; }
    .home-about { padding: 40px 1rem; }
    .home-trust { padding: 40px 1rem; }
    .home-cta { padding: 40px 1rem; }
    .home-cta h2 { font-size: 1.6rem; }

    .features-grid { grid-template-columns: 1fr; }
    .feature-card { padding: 1.8rem 1.5rem; }

    .sub-section { padding: 40px 1rem; }
    .sub-section-alt { padding: 40px 1rem; }
    .feature-detail { padding: 40px 1rem; }
    .feature-row { padding: 1.5rem; }

    .version-marker { position: static; display: inline-block; margin-bottom: 0.5rem; }

    .nav-menu { gap: 0.8rem; font-size: 0.8rem; }
}