/* Reset and Color Schemes */
:root {
    --bg: #09090b;
    --card: #09090b;
    --card-hover: #121215;
    --border: #27272a;
    --border-hover: #3f3f46;
    --text: #f4f4f5;
    --text-muted: #a1a1aa;
    --text-dark: #71717a;
    --white: #ffffff;
    --black: #000000;
    --accent: #d84827;
    --banner-bg: #1c1c1f;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}


* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Bilingual Display Control */
body.lang-zh .lang-en { display: none !important; }
body.lang-en .lang-zh { display: none !important; }

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg);
}
::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

/* Nav Dropdown */
.nav-dropdown {
    position: relative;
    display: inline-block;
    padding-bottom: 12px;
    margin-bottom: -12px;
}
.nav-dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--card);
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 100;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 0;
    margin-top: 4px;
}
.nav-dropdown-content::before {
    content: '';
    position: absolute;
    top: -12px;
    left: 0;
    right: 0;
    height: 12px;
}
.nav-dropdown:hover .nav-dropdown-content {
    display: block;
}
.nav-dropdown-content a {
    color: var(--text-muted);
    padding: 8px 16px;
    text-decoration: none;
    display: block;
    text-align: center;
    font-size: 13px;
}
.nav-dropdown-content a:hover {
    background-color: rgba(255,255,255,0.05);
    color: var(--text);
}
    background-color: rgba(0,0,0,0.05);
}

/* 1. Announcement Banner */
.banner {
    background: var(--banner-bg);
    color: var(--text);
    padding: 10px 16px;
    font-size: 13px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border);
    text-align: center;
    position: relative;
    z-index: 10;
    transition: var(--transition);
}

.banner-badge {
    background: var(--white);
    color: var(--black);
    font-weight: 700;
    font-size: 10px;
    padding: 2px 6px;
    letter-spacing: 0.5px;
    border-radius: 2px;
    transition: var(--transition);
}

.banner-text {
    color: var(--text-muted);
}

.banner-link {
    color: var(--white);
    text-decoration: underline;
    font-weight: 500;
    transition: opacity 0.2s ease;
}

.banner-link:hover {
    opacity: 0.8;
}

/* Container Wrapper — full width layout */
.wrapper {
    width: 100%;
    margin: 0;
    padding: 0;
}

/* Section content constrained, background full-width */
section {
    padding-left: max(24px, calc((100% - 960px) / 2));
    padding-right: max(24px, calc((100% - 960px) / 2));
}

/* 2. Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100vw;
    z-index: 1000;
    background: var(--bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
    box-shadow: none;
}

/* Reset default body margin for full-width layout */
body {
    margin: 0;
}

.header .wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    max-width: 960px;
    margin: 0 auto;
}

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

/* Offset body for fixed header */
body {
    padding-top: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--white);
    text-decoration: none;
    font-weight: 700;
    font-size: 20px;
    transition: var(--transition);
}

.logo-img {
    height: 24px;
    width: auto;
    object-fit: contain;
}

/* Logo theme visibility */
body:not(.light-mode) .logo-img-light { display: none !important; }

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

.nav-menu a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: color 0.2s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Dropdown Language Picker */
.lang-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0;
}

.lang-btn {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 6px 10px;
    font-size: 12px;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
}

.lang-btn:first-child {
    border-radius: 4px 0 0 4px;
}

.lang-btn:last-child {
    border-radius: 0 4px 4px 0;
}

.lang-btn.active {
    color: var(--text);
    background: var(--card-hover);
    border-color: var(--accent);
    z-index: 1;
}

.lang-btn:hover:not(.active) {
    color: var(--text);
    border-color: var(--border-hover);
}

.lang-divider {
    color: var(--text-dark);
    font-size: 12px;
    padding: 0 2px;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    line-height: 1;
    display: inline-flex;
    align-items: center;
    align-self: stretch;
}

/* Theme Toggle Button */
.theme-toggle-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 6px 10px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-toggle-btn:hover {
    color: var(--text);
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.03);
}

    background: rgba(0, 0, 0, 0.02);
}

/* Sun/Moon Icon Display toggling */
body:not(.light-mode) .icon-moon { display: none; }

.btn-nav {
    display: inline-block;
    border: 1px solid var(--border);
    color: var(--text);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 4px;
    transition: var(--transition);
}

.btn-nav:hover {
    border-color: var(--text-muted);
    background: rgba(255, 255, 255, 0.03);
}

/* 3. Hero Section */
.hero {
    text-align: center;
    margin-bottom: 90px;
    padding: 40px 0;
    position: relative;
    overflow: hidden;
}

/* Hero orange glow accents */
.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    z-index: 0;
}
.hero-glow-1 {
    top: -10%;
    right: 10%;
    width: 300px;
    height: 300px;
    background: rgba(212, 93, 53, 0.12);
}
.hero-glow-2 {
    bottom: 0%;
    left: 5%;
    width: 200px;
    height: 200px;
    background: rgba(212, 93, 53, 0.08);
}

.hero-badge {
    display: inline-block;
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 12px;
    padding: 6px 14px;
    border-radius: 100px;
    margin-bottom: 32px;
    letter-spacing: -0.1px;
    transition: var(--transition);
}

.hero-title {
    font-size: clamp(2.2rem, 4vw, 2.8rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--white);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    transition: color 0.3s ease;
}

.gradient-text {
    background: linear-gradient(to right, var(--text), var(--text-muted));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-sub {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 680px;
    margin: 0 auto 40px;
    line-height: 1.6;
    transition: color 0.3s ease;
}

.hero-sub strong {
    color: var(--text);
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-solid {
    display: inline-block;
    background: var(--white);
    color: var(--black);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    padding: 12px 28px;
    border-radius: 4px;
    transition: var(--transition);
}

.btn-solid:hover {
    opacity: 0.9;
}

/* Hero CTA buttons — accent glow */
.hero .btn-solid {
    background: linear-gradient(135deg, var(--accent) 0%, #0891b2 100%);
    color: #faf8f3;
    border: none;
    padding: 14px 36px;
    font-size: 15px;
    border-radius: 6px;
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.35), 0 4px 16px rgba(6, 182, 212, 0.25);
}
.hero .btn-solid:hover {
    opacity: 1;
    transform: translateY(-3px);
    box-shadow: 0 0 32px rgba(6, 182, 212, 0.55), 0 8px 28px rgba(6, 182, 212, 0.4);
}
.hero .btn-solid:active {
    transform: translateY(-1px);
}

.hero .btn-outline {
    border: 1px solid rgba(6, 182, 212, 0.5);
    color: var(--accent);
    background: transparent;
    padding: 14px 36px;
    font-size: 15px;
    border-radius: 6px;
}
.hero .btn-outline:hover {
    background: rgba(6, 182, 212, 0.08);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border);
    color: var(--text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 12px 28px;
    border-radius: 4px;
    transition: var(--transition);
}

.btn-outline:hover {
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.03);
}

/* 4. Terminal Command Panel */
.installation-section {
    margin-bottom: 100px;
    display: flex;
    justify-content: center;
}

.terminal-card {
    background: #0d0d0f;
    border: 1px solid var(--border);
    border-radius: 8px;
    width: 100%;
    max-width: 600px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    transition: border-color 0.3s ease;
}

    background: #f4f4f5;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
}

.terminal-header {
    background: #121214;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    height: 48px;
    transition: border-color 0.3s ease;
}

    background: #e4e4e7;
}

.tab-list {
    display: flex;
    gap: 16px;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-dark);
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    padding: 12px 4px;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--text-muted);
}

.tab-btn.active {
    color: var(--text);
    border-bottom-color: var(--white);
}

    border-bottom-color: #000000;
}

.copy-container {
    display: flex;
    align-items: center;
}

.copy-action-btn {
    background: transparent;
    border: none;
    color: var(--text-dark);
    font-family: var(--font-sans);
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    border-radius: 4px;
    transition: var(--transition);
}

.copy-action-btn:hover {
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.05);
}

    background: rgba(0, 0, 0, 0.03);
}

.copy-action-btn.success {
    color: #10b981;
}

.terminal-body {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 14px;
    min-height: 80px;
    display: flex;
    align-items: center;
    color: #e4e4e7;
}

    color: #18181b;
}

.tab-pane {
    display: none;
    width: 100%;
}

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

.code-line {
    white-space: pre-wrap;
    word-break: break-all;
}

.c-muted {
    color: #93c5fd;
}

    color: #2563eb;
}

.c-highlight {
    color: #67e8f9;
}

    color: #0891b2;
}

/* 5. Clean Grid Layouts */
.section {
    margin-bottom: 120px;
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-tag {
    font-size: 12px;
    font-family: var(--font-mono);
    color: var(--text-dark);
    letter-spacing: 1px;
    display: block;
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 600;
    color: var(--white);
    letter-spacing: -0.5px;
    transition: color 0.3s ease;
}

.grid {
    display: grid;
    gap: 24px;
}

.grid-2 {
    grid-template-columns: 1fr 1fr;
}

.grid-3 {
    grid-template-columns: 1fr 1fr 1fr;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 32px;
    transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
}

.card:hover {
    border-color: var(--border-hover);
    background: var(--card-hover);
    transform: translateY(-2px);
}

.card-num {
    font-family: var(--font-mono);
    color: var(--text-dark);
    font-size: 14px;
    margin-bottom: 24px;
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #d45d35 0%, #be5937 100%);
    border-radius: 12px;
    font-size: 24px;
    margin-bottom: 20px;
}

/* Feature cards — CC Switch style: transparent bg + subtle border + large radius */
.feature-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 32px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    background: var(--card-hover);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
    letter-spacing: -0.2px;
}

.feature-card p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* Stats badges responsive */
@media (max-width: 640px) {
    .stats-badges {
        gap: 24px !important;
    }
    .stat-num {
        font-size: 1.5rem !important;
    }
}

.card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
    letter-spacing: -0.2px;
    transition: color 0.3s ease;
}

.card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    transition: color 0.3s ease;
}

.card-pain {
    border-color: rgba(239, 68, 68, 0.15);
}

.card-pain:hover {
    border-color: rgba(239, 68, 68, 0.3);
}

    border-color: rgba(239, 68, 68, 0.25);
}

    border-color: rgba(239, 68, 68, 0.5);
}

/* Means of Production vs Labor Card Styles */
.card-labor {
    border-color: var(--border);
    transition: var(--transition);
}
.card-labor:hover {
    border-color: var(--border-hover);
    background: var(--card-hover);
}

.card-system-owner {
    transition: var(--transition);
}
.card-system-owner:hover {
    border-color: var(--accent) !important;
    background: rgba(6, 182, 212, 0.035) !important;
}

    border-color: rgba(8, 145, 178, 0.25);
    border-color: rgba(8, 145, 178, 0.25);
    background: rgba(8, 145, 178, 0.015);
}

    border-color: var(--accent) !important;
    background: rgba(8, 145, 178, 0.035) !important;
}

.manifesto-list {
    list-style: none;
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.manifesto-list li {
    font-size: 13.5px;
    color: var(--text-muted);
    line-height: 1.6;
    position: relative;
    padding-left: 20px;
}

.manifesto-list li::before {
    content: "•";
    position: absolute;
    left: 4px;
    color: var(--text-dark);
}

.card-system-owner .manifesto-list li::before {
    color: var(--accent);
}


/* 6. Manifesto */
.manifesto {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 80px 0;
    text-align: center;
    margin-bottom: 120px;
    transition: border-color 0.3s ease;
}

.manifesto blockquote {
    font-size: 24px;
    font-weight: 500;
    color: var(--white);
    line-height: 1.5;
    max-width: 760px;
    margin: 0 auto 24px;
    letter-spacing: -0.5px;
    transition: color 0.3s ease;
}

.manifesto cite {
    font-size: 13px;
    font-style: normal;
    color: var(--text-dark);
}

/* 7. Collapsible FAQ List */
.accordion-list {
    max-width: 760px;
    margin: 0 auto;
    border-top: 1px solid var(--border);
}

.accordion-item {
    border-bottom: 1px solid var(--border);
    transition: border-color 0.3s ease;
}

.accordion-trigger {
    background: transparent;
    border: none;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    color: var(--white);
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: color 0.2s ease;
}

.accordion-trigger:hover {
    color: var(--text-muted);
}

.accordion-icon {
    color: var(--text-dark);
    display: flex;
    align-items: center;
    transition: transform 0.2s ease;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.accordion-content p {
    padding-bottom: 24px;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    transition: color 0.3s ease;
}

/* 8. Waitlist Form Card */
.waitlist-card {
    background: linear-gradient(135deg, #d45d35 0%, #be5937 100%);
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 56px 40px;
    text-align: center;
    margin-bottom: 100px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

body.theme-warm .waitlist-card {
    background: linear-gradient(135deg, #d45d35 0%, #be5937 100%);
    border-color: transparent;
}

.waitlist-card h2 {
    font-size: 28px;
    color: var(--white);
    margin-bottom: 12px;
    transition: color 0.3s ease;
}

.waitlist-note {
    font-size: 14px;
    color: #faf8f3;
    margin-bottom: 32px;
    transition: color 0.3s ease;
}

.waitlist-form {
    display: flex;
    gap: 12px;
    max-width: 500px;
    margin: 0 auto 20px;
}

.input-email {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 12px 16px;
    font-family: inherit;
    font-size: 14px;
    color: var(--white);
    outline: none;
    transition: var(--transition);
}

.input-email:focus {
    border-color: var(--border-hover);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.05);
}

    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.03);
}

.btn-solid-dark {
    background: var(--white);
    color: var(--black);
    border: none;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-solid-dark:hover {
    opacity: 0.9;
}

.waitlist-disclaimer {
    font-size: 12px;
    color: rgba(250, 248, 243, 0.85);
}

/* 9. Footer */
.footer {
    border-top: 1px solid var(--border);
    padding: 48px 0;
    text-align: center;
    transition: border-color 0.3s ease;
}

.footer-links {
    margin-bottom: 16px;
}

.footer-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--text-muted);
}

.sep {
    color: var(--border);
    margin: 0 16px;
}

.footer-copy {
    font-size: 12px;
    color: var(--text-dark);
}

/* Responsive Adaptations */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 20px;
        align-items: flex-start;
        padding: 24px 0;
    }
    
    .nav-menu {
        gap: 20px;
    }
    
    .nav-actions {
        width: 100%;
        justify-content: space-between;
    }

    .hero-title {
        font-size: 38px;
    }
    
    .hero-sub {
        font-size: 16px;
    }

    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }

    .waitlist-form {
        flex-direction: column;
    }
    
    .btn-solid-dark {
        width: 100%;
    }
}

/* ==========================================================================
   10. Expanded Technical Elements (Architecture, Tables & 12-Layer Chart)
   ========================================================================== */

/* Compare Table for AI vs Human Mindset */
.compare-table-container {
    width: 100%;
    overflow-x: auto;
    margin: 32px 0;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--card);
    transition: border-color 0.3s ease;
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 14px;
}

.compare-table th, .compare-table td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
}

.compare-table th {
    background: var(--banner-bg);
    color: var(--white);
    font-weight: 600;
    font-size: 13px;
    font-family: var(--font-mono);
    letter-spacing: 0.5px;
}

.compare-table tr:last-child td {
    border-bottom: none;
}

.compare-table td:first-child {
    font-weight: 600;
    color: var(--white);
    font-family: var(--font-sans);
    font-size: 14px;
    width: 180px;
}

.compare-highlight {
    color: var(--accent);
    font-weight: 500;
}

/* Architecture Visualizer */
.architecture-container {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 40px;
    margin: 40px 0;
    background: var(--card);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
}

.arch-row-nodes {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    gap: 20px;
}

.arch-node {
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 20px 24px;
    background: var(--banner-bg);
    text-align: center;
    flex: 1;
    transition: var(--transition);
}

.arch-node:hover {
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.arch-node h4 {
    font-size: 15px;
    color: var(--white);
    margin-bottom: 6px;
    font-weight: 600;
}

.arch-node p {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
}

.arch-arrow {
    color: var(--text-dark);
    font-size: 24px;
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 12-Layer Industrial Chain Chart */
.layers-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 32px 0;
}

.layer-item {
    display: flex;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 14px 24px;
    background: var(--card);
    transition: var(--transition);
    gap: 16px;
}

.layer-item:hover {
    border-color: var(--border-hover);
    background: var(--card-hover);
}

.layer-num {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-dark);
    width: 80px;
    flex-shrink: 0;
    font-weight: 500;
}

.layer-title {
    font-size: 14px;
    color: var(--white);
    font-weight: 600;
    width: 220px;
    flex-shrink: 0;
}

.layer-desc {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.4;
}

.layer-highlight {
    border-color: rgba(6, 182, 212, 0.25);
    background: rgba(6, 182, 212, 0.015);
}

.layer-highlight:hover {
    border-color: var(--accent);
    background: rgba(6, 182, 212, 0.04);
}

/* ==========================================================================
   11. Technical Documentation Page Layout (docs.html)
   ========================================================================== */
.docs-header-wrapper {
    margin-bottom: 40px;
}

.docs-container {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 64px;
    margin-bottom: 100px;
    padding-left: max(24px, calc((100% - 960px) / 2));
    padding-right: max(24px, calc((100% - 960px) / 2));
}

.docs-sidebar {
    position: sticky;
    top: 100px;
    height: calc(100vh - 120px);
    overflow-y: auto;
    padding-right: 24px;
    border-right: 1px solid var(--border);
}

.docs-nav-title {
    font-size: 11px;
    font-family: var(--font-mono);
    color: var(--text-dark);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 20px;
    font-weight: 600;
}

.docs-nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.docs-nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
    display: block;
    line-height: 1.4;
}

.docs-nav-link:hover, .docs-nav-link.active {
    color: var(--accent);
}

.docs-content {
    max-width: 720px;
}

.docs-section {
    margin-bottom: 80px;
    scroll-margin-top: 100px;
}

.docs-section h2 {
    font-size: 26px;
    color: var(--text);
    margin-bottom: 20px;
    font-weight: 600;
    border-bottom: 1px solid var(--border);
    padding-bottom: 10px;
    letter-spacing: -0.5px;
}

.docs-section h3 {
    font-size: 18px;
    color: var(--text);
    margin-top: 32px;
    margin-bottom: 14px;
    font-weight: 600;
}

.docs-section p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 18px;
    line-height: 1.75;
}

.docs-section strong {
    color: var(--white);
}

    color: #000000;
}

.docs-section ul, .docs-section ol {
    margin-left: 20px;
    margin-bottom: 18px;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

.docs-section li {
    margin-bottom: 8px;
}

.docs-section code {
    background: transparent;
    padding: 0;
    border-radius: 0;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text);
}

.docs-section pre {
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    overflow-x: auto;
    margin: 20px 0;
}

.docs-section pre code {
    background: transparent;
    padding: 0;
    color: var(--text);
    font-size: 13px;
}

.docs-section .c-comment {
    color: var(--text-dark);
}

/* Docs Responsive Adaptations */
@media (max-width: 900px) {
    .docs-container {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .arch-row-nodes {
        flex-direction: column;
        gap: 12px;
    }
    
    .arch-arrow {
        transform: rotate(90deg);
        padding: 4px 0;
    }
    
    .layer-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }
    
    .layer-num {
        width: auto;
    }
    
    .layer-title {
        width: auto;
    }
    
    .docs-container {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .docs-sidebar {
        position: static;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding-bottom: 24px;
        padding-right: 0;
    }
    
    .docs-nav-list {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 10px 18px;
    }
    
    .compare-table th, .compare-table td {
        padding: 12px 16px;
    }
    
    .compare-table td:first-child {
        width: 130px;
        font-size: 13px;
    }
}

/* Download Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; align-self: stretch;
    background: rgba(0,0,0,0.6);
    display: flex; justify-content: center; align-items: center;
    z-index: 1000;
    opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.modal-overlay.active {
    opacity: 1; pointer-events: auto;
}
.modal-content {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 32px;
    width: 90%; max-width: 400px;
    text-align: center;
}
.modal-close {
    float: right; cursor: pointer; color: var(--text-muted); font-size: 20px;
}
.download-options { display: flex; flex-direction: column; gap: 12px; margin-top: 24px; }
.download-option {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 16px; border: 1px solid var(--border); border-radius: 6px;
    color: var(--text); text-decoration: none; transition: var(--transition);
}
.download-option:hover { border-color: var(--accent); background: rgba(6, 182, 212, 0.05); }

/* ===== One Store Section ===== */
.store-section {
    padding: 4rem 2rem;
}

.store-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    margin: 2rem auto;
    max-width: 800px;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    white-space: nowrap;
}

.filter-btn:hover {
    border-color: var(--accent);
    color: var(--text);
}

.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.store-search {
    flex: 1;
    min-width: 200px;
    max-width: 300px;
}

.search-input {
    width: 100%;
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.85rem;
    font-family: var(--font-sans);
    outline: none;
    transition: var(--transition);
}

.search-input:focus {
    border-color: var(--accent);
}

.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
    max-width: 1100px;
    margin: 1.5rem auto;
}

.plugin-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.plugin-card:hover {
    border-color: var(--border-hover);
    background: var(--card-hover);
}

.plugin-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.plugin-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent), #0891b2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.plugin-icon-img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    object-fit: cover;
}

.plugin-info {
    flex: 1;
    min-width: 0;
}

.plugin-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.plugin-category {
    display: inline-block;
    font-size: 0.72rem;
    padding: 0.15rem 0.5rem;
    border-radius: 9999px;
    background: rgba(6, 182, 212, 0.12);
    color: var(--accent);
    margin-top: 0.25rem;
    font-weight: 500;
}

.plugin-desc {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.plugin-footer {
    display: flex;
    justify-content: flex-end;
    padding-top: 0.25rem;
}

.plugin-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.4rem 1rem;
    border-radius: 8px;
    font-size: 0.82rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    font-family: var(--font-sans);
}

.plugin-download-btn:hover {
    border-color: var(--accent);
    background: rgba(6, 182, 212, 0.08);
}

.store-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.store-loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

@media (max-width: 640px) {
    .cards-container {
        grid-template-columns: 1fr;
    }
    .store-controls {
        flex-direction: column;
    }
    .store-search {
        max-width: 100%;
        width: 100%;
    }
}


/* ============================================================
   UNIFIED THEME SYSTEM v2.0
   Supports: theme-dark (default), theme-light, theme-warm
   ============================================================ */



/* ---------- Theme: Warm (CC Switch inspired) ---------- */
body.theme-warm {
    --bg: #eeeae2;
    --bg-alt: #e4e0d8;
    --card: #e6dfd3;
    --card-hover: #ded6c8;
    --border: #d6cfc1;
    --border-hover: #c6bfb0;
    --text: #1f1f1f;
    --text-muted: #6b6b6b;
    --text-dark: #a0a0a0;
    --white: #1f1f1f;
    --black: #ffffff;
    --accent: #0891b2;
    --banner-bg: #eae6de;
    --accent-soft: rgba(8, 145, 178, 0.08);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.08);
    --shadow-xl: 0 20px 48px rgba(0,0,0,0.10);
}

/* ---------- Theme: Dark (warm brown, CC Switch inspired) ---------- */
body.theme-dark {
    --bg: #23201a;
    --bg-alt: #3e3a32;
    --card: #2a2620;
    --card-hover: #353028;
    --border: #4a443c;
    --border-hover: #5c5448;
    --text: #faf8f3;
    --text-muted: #a8a090;
    --text-dark: #7a7060;
    --white: #faf8f3;
    --black: #1f1f1f;
    --accent: #d84827;
    --banner-bg: #2a2620;
    --accent-soft: rgba(6, 182, 212, 0.12);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.25);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.3);
    --shadow-xl: 0 20px 48px rgba(0,0,0,0.35);
}

/* ---------- Dark mode specific overrides (prevent pure black holes) ---------- */
body.theme-dark .terminal-card {
    background: #2a2620;
}
body.theme-dark .terminal-header {
    background: #1f1b16;
}
body.theme-dark .card {
    background: #2a2620;
}

/* ---------- Unified overrides for all themed pages ---------- */
body.theme-warm {
    background: var(--bg);
    color: var(--text);
}

body.theme-warm .hero,
body.theme-warm .hero {
    background: var(--bg);
}

body.theme-warm .header,
body.theme-warm .header {
    background: rgba(250, 248, 243, 0.85);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
}

body.theme-warm .header {
    background: rgba(255, 255, 255, 0.85);
}

body.theme-warm .card,
body.theme-warm .card {
    background: var(--card);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    border-radius: 16px;
    transition: box-shadow 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

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

body.theme-warm .terminal-card,
body.theme-warm .terminal-card {
    background: #1e1e2e;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

body.theme-warm .btn-solid,
body.theme-warm .btn-solid {
    background: var(--text);
    color: var(--black);
    border-radius: 10px;
    padding: 14px 28px;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

body.theme-warm .btn-solid:hover,
body.theme-warm .btn-solid:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Warm mode hero buttons — keep orange */
body.theme-warm .hero .btn-solid {
    background: linear-gradient(135deg, #d45d35 0%, #be5937 100%);
    color: #faf8f3;
    box-shadow: 0 4px 16px rgba(212, 93, 53, 0.35);
}
body.theme-warm .hero .btn-solid:hover {
    opacity: 0.95;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(212, 93, 53, 0.45);
}

body.theme-warm .btn-outline,
body.theme-warm .btn-outline {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px 28px;
    font-weight: 600;
    transition: background 0.2s ease, border-color 0.2s ease;
}

body.theme-warm .btn-outline:hover,
body.theme-warm .btn-outline:hover {
    background: var(--bg-alt);
    border-color: var(--border-hover);
}

/* Warm mode hero outline button — keep orange border */
body.theme-warm .hero .btn-outline {
    border: 1px solid rgba(212, 93, 53, 0.5);
    color: #d45d35;
}
body.theme-warm .hero .btn-outline:hover {
    background: rgba(212, 93, 53, 0.08);
    border-color: #d45d35;
}

body.theme-warm .hero-badge,
body.theme-warm .hero-badge {
    background: var(--accent-soft);
    color: var(--accent);
    border: 1px solid rgba(8,145,178,0.15);
    border-radius: 100px;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

body.theme-warm .section-tag,
body.theme-warm .section-tag {
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 500;
}

body.theme-warm .hero-title,
body.theme-warm .hero-title {
    color: var(--text);
    font-size: clamp(2.2rem, 4vw, 2.8rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    font-weight: 700;
}

body.theme-warm .hero-sub,
body.theme-warm .hero-sub {
    color: var(--text-muted);
    font-size: 1.15rem;
    line-height: 1.7;
    max-width: 640px;
}

body.theme-warm .gradient-text,
body.theme-warm .gradient-text {
    background: linear-gradient(135deg, #0891b2 0%, #0e7490 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

body.theme-warm .card-num,
body.theme-warm .card-num {
    color: var(--text-dark);
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-mono);
}

body.theme-warm .manifesto-list li,
body.theme-warm .manifesto-list li {
    color: var(--text-muted);
    border-left: 2px solid var(--border);
    padding-left: 16px;
    margin-bottom: 16px;
}

body.theme-warm .manifesto-list li strong,
body.theme-warm .manifesto-list li strong {
    color: var(--text);
}

body.theme-warm footer {
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
}

body.theme-warm .footer a,
body.theme-warm .footer a {
    color: var(--text-muted);
    transition: color 0.2s ease;
}

body.theme-warm .footer a:hover,
body.theme-warm .footer a:hover {
    color: var(--text);
}

body.theme-warm .nav-menu a,
body.theme-warm .nav-menu a {
    color: var(--text-muted);
    transition: color 0.2s ease;
}

body.theme-warm .nav-menu a:hover,
body.theme-warm .nav-menu a:hover {
    color: var(--text);
}

body.theme-warm .theme-toggle-btn,
body.theme-warm .theme-toggle-btn {
    color: var(--text-muted);
    border-color: var(--border);
    transition: background 0.2s ease, color 0.2s ease;
}

body.theme-warm .theme-toggle-btn:hover,
body.theme-warm .theme-toggle-btn:hover {
    background: var(--bg-alt);
    color: var(--text);
}

body.theme-warm .lang-btn {
    color: var(--text-muted);
    border-color: var(--border);
}

body.theme-warm .lang-btn.active {
    color: var(--text-dark);
    background: var(--card-hover);
    border-color: var(--accent);
}

body.theme-warm .lang-btn:hover:not(.active) {
    color: var(--text);
    border-color: var(--border-hover);
}

body.theme-warm .nav-dropdown-content,
body.theme-warm .nav-dropdown-content {
    background: var(--card);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
}

body.theme-warm .nav-dropdown-content a,
body.theme-warm .nav-dropdown-content a {
    color: var(--text);
    transition: background 0.15s ease;
}

body.theme-warm .nav-dropdown-content a:hover,
body.theme-warm .nav-dropdown-content a:hover {
    background: var(--bg-alt);
}

body.theme-warm .download-modal-content,
body.theme-warm .download-modal-content {
    background: var(--card);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
}

body.theme-warm .download-option,
body.theme-warm .download-option {
    border: 1px solid var(--border);
    background: var(--bg);
    transition: border-color 0.2s ease, background 0.2s ease;
}

body.theme-warm .download-option:hover,
body.theme-warm .download-option:hover {
    border-color: var(--accent);
    background: var(--accent-soft);
}

body.theme-warm .waitlist-form input,
body.theme-warm .waitlist-form input {
    background: #ffffff;
    border: 1px solid rgba(255,255,255,0.3);
    color: #1f1f1f;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

body.theme-warm .waitlist-form input::placeholder {
    color: #9ca3af;
}

body.theme-warm .waitlist-form input:focus,
body.theme-warm .waitlist-form input:focus {
    border-color: #ffffff;
    box-shadow: 0 0 0 3px rgba(255,255,255,0.2);
}

body.theme-dark .waitlist-form input,
body.theme-dark .waitlist-form input {
    background: #ffffff;
    border: 1px solid rgba(255,255,255,0.3);
    color: #1f1f1f;
}

body.theme-dark .waitlist-form input::placeholder {
    color: #9ca3af;
}

body.theme-dark .waitlist-form input:focus,
body.theme-dark .waitlist-form input:focus {
    border-color: #ffffff;
    box-shadow: 0 0 0 3px rgba(255,255,255,0.2);
}

body.theme-warm .banner,
body.theme-warm .banner {
    background: var(--banner-bg);
    border-bottom: 1px solid var(--border);
}

/* ---------- Logo display ---------- */
body.theme-warm .logo-img-dark,
body.theme-warm .logo-img-dark { display: none !important; }
body.theme-warm .logo-img-light,
body.theme-warm .logo-img-light { display: inline-block !important; }

/* ---------- Back to top button ---------- */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, box-shadow 0.2s ease;
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--bg-alt);
    color: var(--text);
    box-shadow: var(--shadow-lg);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* ---------- Anchor Nav Bar ---------- */
.anchor-nav {
    position: sticky;
    top: 60px;
    z-index: 49;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px;
    padding: 8px 16px;
    background: rgba(200, 60, 30, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: -8px;
}
.anchor-nav a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 4px;
    transition: var(--transition);
    white-space: nowrap;
}
.anchor-nav a:hover { color: #fff; background: rgba(255,255,255,0.12); }
.anchor-nav a.active { color: #fff; font-weight: 600; }

/* ---------- Smooth section transitions ---------- */
.section {
    transition: background-color 0.3s ease;
    padding: 96px max(24px, calc((100% - 960px) / 2));
}

@media (max-width: 768px) {
    .section {
        padding: 64px 24px;
    }
}

/* ---------- Section alternating backgrounds for visual rhythm ---------- */
section:nth-of-type(even) {
    background: var(--bg-alt);
}

section.hero,
section.manifesto {
    background: none !important;
}

/* ---------- Orange bottom CTA override ---------- */
body.theme-warm .bottom-cta,
body.theme-dark .bottom-cta {
    background: linear-gradient(135deg, #d45d35 0%, #be5937 100%) !important;
    color: #faf8f3;
    position: relative;
}

body.theme-warm .bottom-cta::after,
body.theme-dark .bottom-cta::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(to bottom, transparent, rgba(0,0,0,0.15));
    pointer-events: none;
    z-index: 1;
}

body.theme-warm .bottom-cta h2,
body.theme-dark .bottom-cta h2 {
    color: #faf8f3;
}

body.theme-warm .bottom-cta p,
body.theme-dark .bottom-cta p {
    color: rgba(250, 248, 243, 0.9);
}

/* Footer Disclaimer */
.footer-disclaimer {
    max-width: 600px;
    margin: 12px auto 8px;
    padding: 0 16px;
    text-align: center;
}

.footer-disclaimer p {
    font-size: 11px;
    line-height: 1.5;
    color: var(--text-muted);
    opacity: 0.7;
}

/* ========== Knowledge Flywheel Section (Modular Card Layout) ========== */

/* Core insight banner — key takeaways at top of section */
.core-insight {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 40px;
}
.core-insight h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.core-insight-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.core-insight-items p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-muted);
    padding-left: 20px;
    position: relative;
}
.core-insight-items p::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}
.core-insight-items p strong {
    color: var(--text);
}

/* Insight grid — 3-column card layout */
.insight-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
    margin-bottom: 40px;
}

.insight-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px 24px;
    transition: all 0.25s ease;
}
.insight-card:hover {
    border-color: var(--border-hover);
    background: var(--card-hover);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transform: translateY(-2px);
}
.insight-card.problem:hover {
    border-color: rgba(239, 68, 68, 0.25);
}
.insight-card.solution:hover {
    border-color: var(--accent);
}

.insight-card .card-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 16px;
    background: var(--card-hover);
    border: 1px solid var(--border);
}
.insight-card.problem .card-icon {
    border-color: rgba(239, 68, 68, 0.2);
    background: rgba(239, 68, 68, 0.06);
}
.insight-card.solution .card-icon {
    border-color: rgba(212, 93, 53, 0.25);
    background: rgba(212, 93, 53, 0.08);
}

.insight-card h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
    letter-spacing: -0.2px;
}

.insight-card p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 12px;
}
.insight-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.insight-card ul li {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
    padding-left: 16px;
    position: relative;
}
.insight-card ul li::before {
    content: "•";
    position: absolute;
    left: 2px;
    color: var(--text-dark);
}
.insight-card.problem ul li::before {
    color: rgba(239, 68, 68, 0.5);
}
.insight-card.solution ul li::before {
    color: var(--accent);
}

/* Knowledge Ladder — 5-step progression bar */
.knowledge-ladder {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4px;
    padding: 32px 24px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-top: 40px;
}
.ladder-step {
    flex: 1;
    text-align: center;
    padding: 12px 8px;
    border-radius: 8px;
    position: relative;
}
.ladder-step .step-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 4px;
    transition: color 0.2s ease;
}
.ladder-step .step-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-muted);
    transition: color 0.2s ease;
}
.ladder-step.active .step-title,
.ladder-step:hover .step-title {
    color: #ffffff;
}
.ladder-step.active .step-label {
    color: var(--accent);
}
.ladder-step.active {
    background: rgba(6, 182, 212, 0.06);
    border: 1px solid rgba(6, 182, 212, 0.15);
}
.ladder-arrow {
    color: var(--text-dark);
    font-size: 18px;
    flex-shrink: 0;
    opacity: 0.4;
}

/* Section divider labels */
.section-sub-label {
    font-size: 12px;
    font-family: var(--font-mono);
    color: var(--text-dark);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 20px;
    display: block;
}
.section-sub-label.problem-label {
    color: rgba(239, 68, 68, 0.6);
}
.section-sub-label.solution-label {
    color: var(--accent);
}

/* Narrow section text block */
.narrow-text {
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-muted);
    margin-bottom: 32px;
}

/* Flywheel section closing block */
.flywheel-closing {
    text-align: center;
    padding: 40px 32px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-top: 40px;
}
.flywheel-closing h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
}
.flywheel-closing p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto;
}

/* Responsive: collapse insight-grid to 1 or 2 columns on small screens */
@media (max-width: 900px) {
    .insight-grid {
        grid-template-columns: 1fr;
    }
    .knowledge-ladder {
        flex-direction: column;
        gap: 8px;
        padding: 24px 16px;
    }
    .ladder-arrow {
        transform: rotate(90deg);
    }
    .ladder-step {
        width: 100%;
    }
    .flywheel-closing h3 {
        font-size: 17px;
    }
}

/* Theme overrides — warm theme: keep card backgrounds dark, fix text for readability */
body.theme-warm .insight-card,
body.theme-warm .core-insight,
body.theme-warm .knowledge-ladder,
body.theme-warm .flywheel-closing {
    background: var(--card);
    border-color: var(--border);
}
body.theme-warm .ladder-step.active {
    background: rgba(8, 145, 178, 0.08);
    border-color: rgba(8, 145, 178, 0.2);
}
body.theme-warm .ladder-step.active .step-label {
    color: var(--accent);
}
body.theme-warm .ladder-step .step-title {
    color: var(--text-muted);
}
body.theme-warm .ladder-step.active .step-title {
    color: var(--text);
}
body.theme-warm .ladder-step .step-label {
    color: var(--text-dark);
}