/* ============================================================
   core-skills Landing Page v2
   Multi-page, photo-rich, joyful design
   ============================================================ */

:root {
    --cs-bg-0: #ffffff;
    --cs-bg-1: #f8f9fa;
    --cs-bg-2: #f1f3f5;
    --cs-bg-3: #dee2e6;
    --cs-bg-4: #adb5bd;
    --cs-bg-5: #868e96;
    --cs-bg-6: #495057;
    --cs-bg-7: #343a40;
    --cs-bg-8: #212529;

    --cs-text-primary: #212529;
    --cs-text-secondary: #495057;
    --cs-text-tertiary: #868e96;

    --cs-accent: #3b82f6;
    --cs-accent-hover: #2563eb;
    --cs-success: #22c55e;
    --cs-warning: #f59e0b;
    --cs-purple: #8b5cf6;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-lg: 16px;
    --space-xl: 24px;
    --space-2xl: 32px;
    --space-3xl: 48px;
    --space-4xl: 64px;
    --space-5xl: 96px;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 100px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 24px rgba(0,0,0,0.1);
    --shadow-xl: 0 24px 48px rgba(0,0,0,0.12);
}

/* ============================================================
   BASE
   ============================================================ */

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--cs-text-primary);
    background: var(--cs-bg-0);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    letter-spacing: -0.011em;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 var(--space-xl); }
a { color: var(--cs-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.icon-xs { width: 14px; height: 14px; }
.icon-sm { width: 18px; height: 18px; }
.icon-md { width: 22px; height: 22px; }
.icon-lg { width: 28px; height: 28px; }

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 11px 22px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn:hover { text-decoration: none; }
.btn-sm { padding: 7px 14px; font-size: 13px; }
.btn-lg { padding: 14px 30px; font-size: 15px; border-radius: var(--radius-md); }

.btn-primary { background: var(--cs-bg-8); color: #fff; }
.btn-primary:hover { background: var(--cs-bg-7); transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-secondary { background: var(--cs-bg-2); color: var(--cs-text-primary); border: 1px solid var(--cs-bg-3); }
.btn-secondary:hover { background: var(--cs-bg-3); }

.btn-ghost { background: transparent; color: var(--cs-text-secondary); border: 1px solid var(--cs-bg-3); }
.btn-ghost:hover { background: var(--cs-bg-2); color: var(--cs-text-primary); }

/* ============================================================
   NAV
   ============================================================ */

.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.nav.scrolled { border-bottom-color: var(--cs-bg-3); box-shadow: var(--shadow-sm); }

.nav-inner {
    max-width: 1100px; margin: 0 auto; padding: 0 var(--space-xl);
    display: flex; align-items: center; height: 64px; gap: var(--space-2xl);
}

.nav-brand {
    display: flex; align-items: center; gap: 10px;
    text-decoration: none; color: var(--cs-text-primary); flex-shrink: 0;
}

.nav-logo {
    width: 28px; height: 28px; display: flex; align-items: center; justify-content: center;
    background: var(--cs-bg-8); color: #fff; border-radius: 7px;
    font-size: 12px; font-weight: 700; letter-spacing: 0.02em;
}

.nav-logo-img { width: 28px; height: 28px; border-radius: 7px; }

.nav-name { font-size: 15px; font-weight: 600; letter-spacing: -0.01em; }

.nav-links { display: flex; align-items: center; gap: var(--space-xl); flex: 1; }
.nav-links a {
    font-size: 14px; font-weight: 500; color: var(--cs-text-secondary);
    text-decoration: none; transition: color 0.15s;
}
.nav-links a:hover, .nav-links a.active { color: var(--cs-text-primary); text-decoration: none; }

.nav-actions { display: flex; align-items: center; gap: var(--space-md); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: var(--space-sm); color: var(--cs-text-secondary); }
.lang-switch {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    padding: 4px 10px;
    border: 1.5px solid var(--cs-bg-3);
    border-radius: var(--radius-full);
    color: var(--cs-text-secondary);
    text-decoration: none;
    transition: all 0.2s;
}
.lang-switch:hover {
    border-color: var(--cs-accent);
    color: var(--cs-accent);
}

/* ============================================================
   HERO
   ============================================================ */

.hero {
    position: relative; padding: 150px 0 0; overflow: hidden;
    background: linear-gradient(180deg, #f0f4ff 0%, var(--cs-bg-0) 100%);
}
.hero::before {
    content: ''; position: absolute; inset: 0;
    background: url('/static/images/home-hero-bg.png') center/cover no-repeat;
    opacity: 0.15; z-index: 0;
}

.hero-bg { position: absolute; inset: 0; pointer-events: none; z-index: 1; }

.hero-grid {
    position: absolute; inset: 0;
    background-image: linear-gradient(var(--cs-bg-3) 1px, transparent 1px), linear-gradient(90deg, var(--cs-bg-3) 1px, transparent 1px);
    background-size: 60px 60px; opacity: 0.25;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 70%);
}

.hero-content { position: relative; z-index: 2; text-align: center; max-width: 780px; margin: 0 auto; padding: 0 var(--space-xl); }

.hero-badge {
    display: inline-flex; align-items: center; gap: var(--space-sm);
    padding: 6px 18px; background: var(--cs-bg-0); border: 1px solid var(--cs-bg-3);
    border-radius: var(--radius-full); font-size: 13px; font-weight: 500;
    color: var(--cs-text-secondary); margin-bottom: var(--space-xl);
    box-shadow: var(--shadow-sm);
}

.hero-title {
    font-size: clamp(36px, 5.5vw, 58px); font-weight: 800; line-height: 1.08;
    letter-spacing: -0.04em; color: var(--cs-text-primary); margin-bottom: var(--space-xl);
}

.hero-accent {
    background: linear-gradient(135deg, var(--cs-accent) 0%, var(--cs-purple) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.hero-subtitle {
    font-size: 18px; line-height: 1.7; color: var(--cs-text-secondary);
    max-width: 600px; margin: 0 auto var(--space-2xl);
}

.hero-actions {
    display: flex; align-items: center; justify-content: center;
    gap: var(--space-lg); margin-bottom: var(--space-4xl);
}

/* Hero photo strip */
.hero-photos { position: relative; margin-top: var(--space-3xl); }

.hero-photo-strip {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg);
    padding: 0 var(--space-xl);
    max-width: 1100px; margin: 0 auto;
}

.hero-photo {
    border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease;
}

.hero-photo:hover { transform: translateY(-4px); }

.hero-photo img {
    width: 100%; height: 200px; object-fit: cover;
    transition: transform 0.4s ease;
}

.hero-photo:hover img { transform: scale(1.05); }

/* ============================================================
   SECTIONS
   ============================================================ */

.section { padding: var(--space-5xl) 0; }
.section-alt { background: var(--cs-bg-1); }
.section-warm { background: linear-gradient(180deg, #fefce8 0%, #fffbeb 50%, var(--cs-bg-0) 100%); }
.section-dark { background: var(--cs-bg-8); color: #fff; }
.section-dark .section-title { color: #fff; }
.section-dark .section-subtitle { color: var(--cs-bg-4); }

.section-header { text-align: center; margin-bottom: var(--space-4xl); }

.section-title {
    font-size: clamp(28px, 3.5vw, 40px); font-weight: 700;
    letter-spacing: -0.03em; color: var(--cs-text-primary); margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 17px; color: var(--cs-text-secondary);
    max-width: 580px; margin: 0 auto; line-height: 1.6;
}

/* ============================================================
   BEFORE / AFTER
   ============================================================ */

.before-after { display: grid; grid-template-columns: 1fr auto 1fr; gap: var(--space-2xl); align-items: start; }

.ba-column { }

.ba-label {
    display: inline-flex; align-items: center; gap: var(--space-sm);
    padding: 6px 14px; border-radius: var(--radius-full);
    font-size: 13px; font-weight: 600; margin-bottom: var(--space-lg);
}

.ba-before .ba-label { background: #fef2f2; color: #dc2626; }
.ba-after .ba-label { background: #f0fdf4; color: #16a34a; }

.ba-photo {
    border-radius: var(--radius-lg); overflow: hidden; margin-bottom: var(--space-xl);
    box-shadow: var(--shadow-md);
}

.ba-photo img { width: 100%; height: 220px; object-fit: cover; }

.ba-list { list-style: none; }

.ba-list li {
    display: flex; align-items: flex-start; gap: var(--space-sm);
    padding: 8px 0; font-size: 15px; color: var(--cs-text-secondary); line-height: 1.5;
}

.ba-list li i { flex-shrink: 0; margin-top: 4px; }
.ba-list-bad li i { color: #ef4444; }
.ba-list-good li i { color: #22c55e; }

.ba-divider {
    display: flex; align-items: center; justify-content: center;
    padding-top: 160px;
}

.ba-arrow {
    width: 48px; height: 48px; border-radius: 50%;
    background: var(--cs-bg-8); color: #fff;
    display: flex; align-items: center; justify-content: center;
}

/* ============================================================
   PHOTO BANNER
   ============================================================ */

.photo-banner { overflow: hidden; padding: var(--space-sm) 0; background: var(--cs-bg-1); }

.photo-banner-inner {
    display: flex; gap: var(--space-lg); padding: 0 var(--space-lg);
    animation: scrollPhotos 30s linear infinite;
}

.photo-banner-inner img {
    width: 280px; height: 180px; object-fit: cover;
    border-radius: var(--radius-md); flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

@keyframes scrollPhotos {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ============================================================
   PHOTO BREAK
   ============================================================ */

.photo-break { position: relative; }

.photo-break-inner { position: relative; height: 400px; overflow: hidden; }

.photo-break-inner > img {
    width: 100%; height: 100%; object-fit: cover;
    filter: brightness(0.55);
}

.photo-break-overlay {
    position: absolute; inset: 0;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    text-align: center; padding: var(--space-xl);
}

.photo-break-overlay h3 {
    font-size: clamp(24px, 3vw, 36px); font-weight: 700; color: #fff;
    letter-spacing: -0.02em; margin-bottom: var(--space-md);
}

.photo-break-overlay p { font-size: 17px; color: rgba(255,255,255,0.8); max-width: 500px; }

/* ============================================================
   STATS BAR
   ============================================================ */

.stats-bar { background: var(--cs-bg-8); padding: var(--space-2xl) 0; }

.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-2xl); text-align: center; }

.stat-number {
    display: block; font-size: 40px; font-weight: 700; color: #fff;
    letter-spacing: -0.02em; font-variant-numeric: tabular-nums; line-height: 1.2;
}

.stat-label { font-size: 13px; color: var(--cs-bg-4); font-weight: 500; }

/* ============================================================
   COWORK SECTION
   ============================================================ */

.cowork-grid { margin-bottom: var(--space-4xl); }

.cowork-card {
    display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3xl);
    align-items: center; margin-bottom: var(--space-4xl);
}

.cowork-card-reverse { direction: rtl; }
.cowork-card-reverse > * { direction: ltr; }

.cowork-img {
    border-radius: var(--radius-xl); overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.cowork-img img { width: 100%; height: 300px; object-fit: cover; }

.cowork-content h3 {
    font-size: 24px; font-weight: 700; letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

.cowork-content p {
    font-size: 16px; color: var(--cs-text-secondary); line-height: 1.7;
}

.cowork-content code {
    font-family: var(--font-mono); font-size: 14px;
    background: var(--cs-bg-2); padding: 2px 6px; border-radius: 4px;
}

/* Terminal */
.hero-terminal {
    max-width: 640px; margin: 0 auto;
    border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow-xl), 0 0 0 1px rgba(0,0,0,0.08);
    text-align: left;
}

.terminal-wide { max-width: 780px; }

.terminal-chrome {
    background: var(--cs-bg-7); padding: 12px 16px;
    display: flex; align-items: center;
}

.terminal-dots { display: flex; gap: 6px; }
.terminal-dots span { width: 10px; height: 10px; border-radius: 50%; background: var(--cs-bg-5); }
.terminal-dots span:first-child { background: #ef4444; }
.terminal-dots span:nth-child(2) { background: #f59e0b; }
.terminal-dots span:last-child { background: #22c55e; }

.terminal-title {
    flex: 1; text-align: center; font-size: 12px; font-weight: 500;
    color: var(--cs-bg-4); font-family: var(--font-mono);
}

.terminal-body {
    background: var(--cs-bg-8); padding: 20px 20px 24px;
    font-family: var(--font-mono); font-size: 13px; line-height: 1.9;
}

.terminal-line { white-space: nowrap; overflow: hidden; }
.terminal-prompt { color: var(--cs-accent); margin-right: 8px; }
.terminal-cmd { color: #e2e8f0; font-weight: 500; }
.terminal-text { color: var(--cs-bg-4); }
.terminal-output { padding-left: 22px; color: var(--cs-bg-4); }
.terminal-muted { color: var(--cs-bg-5); }
.terminal-success { color: var(--cs-success); }

/* ============================================================
   SKILLS GRID
   ============================================================ */

.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); }

.skill-card {
    background: var(--cs-bg-0); border: 1px solid var(--cs-bg-3);
    border-radius: var(--radius-md); padding: var(--space-2xl);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.skill-featured {
    grid-column: 1 / -1; border-left: 4px solid var(--cs-accent);
    display: grid; grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto; gap: var(--space-md) var(--space-2xl);
}

.skill-featured .skill-header { grid-column: 1; }
.skill-featured .skill-desc { grid-column: 1; grid-row: 2; }
.skill-featured .skill-output { grid-column: 2; grid-row: 1 / 3; align-self: center; }

.skill-header { display: flex; align-items: center; gap: var(--space-md); margin-bottom: var(--space-md); }

.skill-icon-wrap {
    width: 42px; height: 42px; display: flex; align-items: center; justify-content: center;
    background: var(--cs-bg-2); border-radius: var(--radius-md);
    color: var(--cs-text-secondary); flex-shrink: 0;
}

.skill-icon-blue { background: #eff6ff; color: #3b82f6; }
.skill-icon-purple { background: #f5f3ff; color: #8b5cf6; }
.skill-icon-green { background: #f0fdf4; color: #22c55e; }
.skill-icon-amber { background: #fffbeb; color: #f59e0b; }

.skill-name { font-family: var(--font-mono); font-size: 16px; font-weight: 600; }

.skill-badge {
    display: inline-block; padding: 2px 10px;
    background: var(--cs-accent); color: #fff;
    border-radius: var(--radius-full); font-size: 11px; font-weight: 600;
}

.badge-purple { background: var(--cs-purple); }
.badge-green { background: var(--cs-success); }
.badge-amber { background: var(--cs-warning); color: var(--cs-bg-8); }
.badge-muted { background: var(--cs-bg-3); color: var(--cs-text-secondary); }

.skill-desc { font-size: 14px; color: var(--cs-text-secondary); line-height: 1.65; }

.skill-output { display: flex; flex-wrap: wrap; gap: var(--space-sm); margin-top: var(--space-md); }

.skill-tag {
    display: inline-block; padding: 5px 12px;
    background: var(--cs-bg-2); border-radius: var(--radius-sm);
    font-size: 12px; font-weight: 500; color: var(--cs-text-secondary);
}

/* ============================================================
   DAY GRID (workflow)
   ============================================================ */

.day-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-2xl); }

.day-card {
    background: var(--cs-bg-0); border: 1px solid var(--cs-bg-3);
    border-radius: var(--radius-lg); overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.day-photo { position: relative; }
.day-photo img { width: 100%; height: 200px; object-fit: cover; }

.day-time-badge {
    position: absolute; top: var(--space-md); left: var(--space-md);
    padding: 4px 12px; background: rgba(0,0,0,0.7); color: #fff;
    border-radius: var(--radius-full); font-size: 13px; font-weight: 600;
    font-family: var(--font-mono); backdrop-filter: blur(8px);
}

.day-content { padding: var(--space-xl); }

.day-cmd {
    font-family: var(--font-mono); font-size: 13px; font-weight: 500;
    color: var(--cs-accent); display: block; margin-bottom: var(--space-xs);
}

.day-content h4 {
    font-size: 18px; font-weight: 600; letter-spacing: -0.01em;
    margin-bottom: var(--space-sm);
}

.day-content p { font-size: 14px; color: var(--cs-text-secondary); line-height: 1.6; }

/* Workflow flowchart */
.wf-flow {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.wf-node {
    display: grid;
    grid-template-columns: 64px 56px 1fr;
    grid-template-rows: auto auto;
    gap: 0 var(--space-lg);
    padding: var(--space-xl);
    background: var(--cs-bg-0);
    border: 1px solid var(--cs-bg-3);
    border-radius: var(--radius-lg);
    position: relative;
    transition: box-shadow 0.25s ease;
}
.wf-node:hover { box-shadow: var(--shadow-md); }
.wf-node-featured { border-color: var(--cs-accent); border-width: 2px; }

.wf-node-time {
    grid-column: 1;
    grid-row: 1 / -1;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--cs-text-tertiary);
    display: flex;
    align-items: flex-start;
    padding-top: 4px;
}

.wf-node-icon {
    grid-column: 2;
    grid-row: 1 / -1;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.wf-icon-amber { background: #fef3c7; color: #d97706; }
.wf-icon-green { background: #dcfce7; color: #16a34a; }
.wf-icon-blue  { background: #dbeafe; color: var(--cs-accent); }
.wf-icon-purple { background: #ede9fe; color: var(--cs-purple); }

.wf-node-body {
    grid-column: 3;
    grid-row: 1;
}
.wf-node-cmd {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--cs-accent);
    background: rgba(59, 130, 246, 0.08);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-xs);
}
.wf-node-body h4 { margin: var(--space-xs) 0 var(--space-xs) 0; font-size: 1rem; }
.wf-node-body p { margin: 0; font-size: 0.85rem; color: var(--cs-text-secondary); line-height: 1.5; }

.wf-node-output {
    grid-column: 3;
    grid-row: 2;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px dashed var(--cs-bg-3);
}
.wf-node-output span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--cs-text-tertiary);
    background: var(--cs-bg-1);
    padding: 3px 10px;
    border-radius: var(--radius-full);
}
.wf-node-output span i { width: 12px; height: 12px; }
.wf-node-output-multi span { background: rgba(59, 130, 246, 0.06); }

.wf-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-sm) 0;
    position: relative;
}
.wf-connector-line {
    width: 2px;
    height: 20px;
    background: var(--cs-bg-3);
}
.wf-connector-arrow {
    color: var(--cs-bg-4);
    line-height: 0;
}
.wf-connector-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--cs-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: var(--space-xs) var(--space-lg);
    background: var(--cs-bg-1);
    border-radius: var(--radius-full);
    margin: var(--space-xs) 0;
}

@media (max-width: 640px) {
    .wf-node {
        grid-template-columns: 48px 1fr;
        grid-template-rows: auto auto auto;
    }
    .wf-node-time {
        grid-column: 1;
        grid-row: 1;
        font-size: 0.75rem;
    }
    .wf-node-icon {
        grid-column: 1;
        grid-row: 2 / -1;
        width: 40px;
        height: 40px;
    }
    .wf-node-body { grid-column: 2; grid-row: 1 / 3; }
    .wf-node-output { grid-column: 1 / -1; grid-row: 3; }
}

/* ============================================================
   INSIGHT TYPES (dark section)
   ============================================================ */

.insight-types-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-lg); }

.insight-type-card {
    background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md); padding: var(--space-xl);
    text-align: center; transition: transform 0.2s, background 0.2s;
}

.insight-type-card:hover { transform: translateY(-3px); background: rgba(255,255,255,0.1); }

.insight-type-icon {
    width: 40px; height: 40px; margin: 0 auto var(--space-md);
    display: flex; align-items: center; justify-content: center;
    background: color-mix(in srgb, var(--accent) 20%, transparent);
    border-radius: var(--radius-md); color: var(--accent);
}

.insight-type-badge {
    display: inline-block; padding: 3px 10px;
    background: color-mix(in srgb, var(--accent) 20%, transparent);
    color: var(--accent); border-radius: var(--radius-full);
    font-size: 12px; font-weight: 600; margin-bottom: var(--space-sm);
}

.insight-type-example {
    font-size: 13px; color: rgba(255,255,255,0.7); font-style: italic; line-height: 1.5;
}

/* ============================================================
   VISUALISATION
   ============================================================ */

.vis-showcase { margin-bottom: var(--space-3xl); }

.vis-mockup {
    border-radius: var(--radius-xl); overflow: hidden;
    box-shadow: var(--shadow-xl); max-width: 900px; margin: 0 auto;
    border: 1px solid var(--cs-bg-3);
}

.mockup-chrome { background: var(--cs-bg-7); padding: 10px 14px; display: flex; align-items: center; }
.mockup-dots { display: flex; gap: 5px; }
.mockup-dots span { width: 8px; height: 8px; border-radius: 50%; background: var(--cs-bg-5); }
.mockup-url { flex: 1; text-align: center; font-size: 11px; font-family: var(--font-mono); color: var(--cs-bg-4); }

.mockup-content { display: flex; background: var(--cs-bg-1); min-height: 340px; }

.mockup-sidebar {
    width: 48px; background: var(--cs-bg-0); border-right: 1px solid var(--cs-bg-3);
    padding: 16px 0; display: flex; flex-direction: column; gap: 4px; align-items: center;
}

.mockup-nav-item { width: 28px; height: 6px; border-radius: 3px; background: var(--cs-bg-3); }
.mockup-nav-item.active { background: var(--cs-bg-8); }

.mockup-main { flex: 1; padding: 16px; }

.mockup-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 16px; }

.mockup-stat-card {
    height: 48px; background: var(--cs-bg-0); border: 1px solid var(--cs-bg-3);
    border-left: 3px solid var(--cs-bg-8); border-radius: 6px;
}

.mockup-charts { display: grid; grid-template-columns: 2fr 1fr; gap: 12px; }

.mockup-chart {
    background: var(--cs-bg-0); border: 1px solid var(--cs-bg-3); border-radius: 6px;
    padding: 16px 12px 12px; display: flex; align-items: flex-end; gap: 8px; height: 200px;
}

.mockup-bar {
    flex: 1; background: linear-gradient(180deg, var(--cs-accent) 0%, #60a5fa 100%);
    border-radius: 3px 3px 0 0;
}

.mockup-doughnut {
    background: var(--cs-bg-0); border: 1px solid var(--cs-bg-3); border-radius: 6px;
    padding: 24px; display: flex; align-items: center; justify-content: center; height: 200px;
}

.mockup-doughnut svg { width: 100%; height: 100%; transform: rotate(-90deg); }

.vis-features-row {
    display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-xl);
    text-align: center;
}

.vis-feat i { color: var(--cs-accent); margin-bottom: var(--space-sm); }
.vis-feat h4 { font-size: 14px; font-weight: 600; margin-bottom: var(--space-xs); }
.vis-feat p { font-size: 13px; color: var(--cs-text-tertiary); }

/* AI provider note */
.vis-provider-note {
    max-width: 700px; margin: var(--space-3xl) auto 0;
    background: linear-gradient(135deg, #f0f4ff 0%, #f5f3ff 50%, #fefce8 100%);
    border: 1px solid var(--cs-bg-3); border-radius: var(--radius-lg);
    padding: var(--space-2xl); text-align: center;
}

.vis-provider-icons {
    display: flex; align-items: center; justify-content: center;
    gap: var(--space-md); margin-bottom: var(--space-lg);
}

.provider-badge {
    padding: 5px 14px; border-radius: var(--radius-full);
    font-size: 13px; font-weight: 600;
    background: var(--cs-bg-0); border: 1px solid var(--cs-bg-3);
    color: var(--cs-text-primary); box-shadow: var(--shadow-sm);
}

.vis-provider-note p {
    font-size: 15px; color: var(--cs-text-secondary); line-height: 1.65;
}

.vis-provider-note code {
    font-family: var(--font-mono); font-size: 13px;
    background: var(--cs-bg-0); padding: 1px 5px; border-radius: 3px;
}

/* ============================================================
   CTA
   ============================================================ */

.section-cta {
    background: linear-gradient(135deg, var(--cs-bg-8) 0%, #1e293b 100%);
    text-align: center; padding: var(--space-5xl) 0;
}

.cta-title {
    font-size: clamp(28px, 3.5vw, 40px); font-weight: 700; color: #fff;
    letter-spacing: -0.025em; margin-bottom: var(--space-lg);
}

.cta-subtitle { font-size: 17px; color: var(--cs-bg-4); max-width: 520px; margin: 0 auto var(--space-2xl); }

.cta-actions { display: flex; align-items: center; justify-content: center; gap: var(--space-lg); }

.section-cta .btn-primary { background: #fff; color: var(--cs-bg-8); }
.section-cta .btn-primary:hover { background: var(--cs-bg-2); }
.section-cta .btn-ghost { border-color: rgba(255,255,255,0.2); color: var(--cs-bg-4); }
.section-cta .btn-ghost:hover { background: rgba(255,255,255,0.06); color: #fff; }

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
    background: var(--cs-bg-8); border-top: 1px solid rgba(255,255,255,0.06);
    padding: var(--space-3xl) 0;
}

.footer-inner {
    display: flex; align-items: center; justify-content: space-between;
    gap: var(--space-xl); flex-wrap: wrap;
}

.footer-brand {
    display: flex; align-items: center; gap: var(--space-sm);
    font-size: 13px; font-weight: 500; color: var(--cs-bg-4);
}

.footer-links { display: flex; gap: var(--space-xl); flex-wrap: wrap; }
.footer-links a { font-size: 13px; color: var(--cs-bg-5); text-decoration: none; }
.footer-links a:hover { color: #fff; text-decoration: none; }

.footer-copy { font-size: 12px; color: var(--cs-bg-5); }
.footer-copy a { color: var(--cs-bg-5); text-decoration: underline; text-underline-offset: 2px; transition: color 0.2s; }
.footer-copy a:hover { color: var(--cs-text-primary); }

/* ============================================================
   PAGE HERO (subpages)
   ============================================================ */

.page-hero {
    padding: 130px 0 var(--space-3xl);
    background: linear-gradient(180deg, var(--cs-bg-1) 0%, var(--cs-bg-0) 100%);
    text-align: center;
}

.page-hero-title {
    font-size: clamp(32px, 4vw, 44px); font-weight: 800;
    letter-spacing: -0.035em; margin-bottom: var(--space-md);
}

.page-hero-sub { font-size: 17px; color: var(--cs-text-secondary); max-width: 500px; margin: 0 auto; }

/* ============================================================
   INSTALL PAGE
   ============================================================ */

.install-prereq {
    display: flex; align-items: center; gap: var(--space-xl);
    background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: var(--radius-md);
    padding: var(--space-xl); margin-bottom: var(--space-4xl); max-width: 700px; margin-left: auto; margin-right: auto;
}

.install-prereq-icon { color: #22c55e; }
.install-prereq h3 { font-size: 15px; font-weight: 600; margin-bottom: 2px; }
.install-prereq p { font-size: 14px; color: var(--cs-text-secondary); }

.install-steps { max-width: 700px; margin: 0 auto var(--space-4xl); }

.install-step { display: flex; gap: var(--space-xl); margin-bottom: var(--space-2xl); }

.install-step-num {
    width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
    background: var(--cs-bg-8); color: #fff; border-radius: 50%;
    font-size: 15px; font-weight: 700; flex-shrink: 0; margin-top: 2px;
}

.install-step-content { flex: 1; }
.install-step-content h4 { font-size: 17px; font-weight: 600; margin-bottom: var(--space-sm); }
.install-step-content p { font-size: 14px; color: var(--cs-text-secondary); margin-bottom: var(--space-md); }

.code-block {
    position: relative; background: var(--cs-bg-8); border-radius: var(--radius-md);
    padding: 18px 50px 18px 18px; overflow-x: auto;
}

.code-block code {
    font-family: var(--font-mono); font-size: 13px; color: #e2e8f0;
    line-height: 1.8; white-space: pre; display: block;
}

.copy-btn {
    position: absolute; top: 12px; right: 12px;
    background: transparent; border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-sm); padding: 5px 7px; color: var(--cs-bg-4);
    cursor: pointer; transition: all 0.15s;
}

.copy-btn:hover { background: rgba(255,255,255,0.1); color: #fff; }

.install-note { font-size: 13px; color: var(--cs-text-tertiary); margin-top: var(--space-sm); }
.install-note code {
    font-family: var(--font-mono); font-size: 12px;
    background: var(--cs-bg-2); padding: 1px 5px; border-radius: 3px;
}

.install-section-card {
    max-width: 700px; margin: 0 auto var(--space-2xl);
    background: var(--cs-bg-0); border: 1px solid var(--cs-bg-3);
    border-radius: var(--radius-md); padding: var(--space-2xl);
}

.install-section-card h3 {
    display: flex; align-items: center; gap: var(--space-sm);
    font-size: 17px; font-weight: 600; margin-bottom: var(--space-lg);
}

.install-section-card p { font-size: 14px; color: var(--cs-text-secondary); margin-bottom: var(--space-lg); }

.install-vis-card { border-left: 3px solid var(--cs-accent); }

.install-org-steps {
    list-style: none; counter-reset: org-step;
    padding: 0;
}

.install-org-steps li {
    counter-increment: org-step;
    padding: 8px 0 8px 32px; position: relative;
    font-size: 14px; color: var(--cs-text-secondary);
}

.install-org-steps li::before {
    content: counter(org-step);
    position: absolute; left: 0; top: 8px;
    width: 22px; height: 22px; border-radius: 50%;
    background: var(--cs-bg-2); color: var(--cs-text-secondary);
    font-size: 12px; font-weight: 600;
    display: flex; align-items: center; justify-content: center;
}

.install-org-steps code {
    font-family: var(--font-mono); font-size: 12px;
    background: var(--cs-bg-2); padding: 1px 5px; border-radius: 3px;
}

/* File tree */
.file-tree-card {
    background: var(--cs-bg-8); border-radius: var(--radius-md);
    padding: var(--space-xl) var(--space-2xl); margin-top: var(--space-lg);
}

.file-tree {
    font-family: var(--font-mono); font-size: 13px; line-height: 2; color: #e2e8f0;
}

.ft-line { display: flex; align-items: center; gap: var(--space-sm); }
.ft-l1 { padding-left: 20px; }
.ft-l2 { padding-left: 40px; }
.ft-l3 { padding-left: 60px; }
.ft-folder { color: #60a5fa; }
.ft-file { color: #e2e8f0; }
.ft-source { margin-left: auto; font-size: 11px; color: var(--cs-bg-5); font-style: italic; }

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

.faq-container { max-width: 750px; margin: 0 auto; }

.faq-group { margin-bottom: var(--space-3xl); }

.faq-group-title {
    font-size: 20px; font-weight: 700; letter-spacing: -0.02em;
    margin-bottom: var(--space-xl); padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--cs-bg-3);
}

.faq-item {
    border: 1px solid var(--cs-bg-3); border-radius: var(--radius-md);
    margin-bottom: var(--space-md); overflow: hidden;
    transition: box-shadow 0.2s;
}

.faq-item:hover { box-shadow: var(--shadow-sm); }

.faq-question {
    width: 100%; display: flex; align-items: center; justify-content: space-between;
    padding: var(--space-lg) var(--space-xl); gap: var(--space-lg);
    background: var(--cs-bg-0); border: none; cursor: pointer;
    font-family: var(--font-sans); font-size: 15px; font-weight: 600;
    color: var(--cs-text-primary); text-align: left;
}

.faq-chevron { color: var(--cs-text-tertiary); transition: transform 0.2s; flex-shrink: 0; }

.faq-item.open .faq-chevron { transform: rotate(180deg); }

.faq-answer {
    max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 var(--space-xl);
}

.faq-item.open .faq-answer {
    max-height: 500px; padding: 0 var(--space-xl) var(--space-xl);
}

.faq-answer p {
    font-size: 14px; color: var(--cs-text-secondary); line-height: 1.7;
    margin-bottom: var(--space-md);
}

.faq-answer p:last-child { margin-bottom: 0; }

.faq-answer code {
    font-family: var(--font-mono); font-size: 13px;
    background: var(--cs-bg-2); padding: 1px 5px; border-radius: 3px;
}

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

.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-xl); margin-bottom: var(--space-4xl); }

.contact-card {
    background: var(--cs-bg-0); border: 1px solid var(--cs-bg-3);
    border-radius: var(--radius-md); padding: var(--space-2xl);
    transition: transform 0.2s, box-shadow 0.2s;
}

.contact-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

.contact-card-icon {
    width: 56px; height: 56px; display: flex; align-items: center; justify-content: center;
    background: var(--cs-bg-2); border-radius: var(--radius-md);
    color: var(--cs-text-secondary); margin-bottom: var(--space-lg);
}

.contact-card h3 { font-size: 17px; font-weight: 600; margin-bottom: var(--space-sm); }
.contact-card p { font-size: 14px; color: var(--cs-text-secondary); margin-bottom: var(--space-xl); line-height: 1.6; }

.contact-community {
    display: grid; grid-template-columns: 1fr 1.3fr; gap: var(--space-3xl);
    align-items: center; background: var(--cs-bg-1); border-radius: var(--radius-xl);
    padding: var(--space-2xl); overflow: hidden;
}

.contact-community-photo { border-radius: var(--radius-lg); overflow: hidden; }
.contact-community-photo img { width: 100%; height: 280px; object-fit: cover; }

.contact-community-content h3 {
    font-size: 22px; font-weight: 700; letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

.contact-community-content p {
    font-size: 15px; color: var(--cs-text-secondary); line-height: 1.7;
    margin-bottom: var(--space-md);
}

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

@media (max-width: 1024px) {
    .skills-grid { grid-template-columns: repeat(2, 1fr); }
    .skill-featured { grid-template-columns: 1fr; }
    .skill-featured .skill-output { grid-column: 1; grid-row: auto; }
    .insight-types-grid { grid-template-columns: repeat(3, 1fr); }
    .vis-features-row { grid-template-columns: repeat(3, 1fr); }
    .cowork-card { grid-template-columns: 1fr; gap: var(--space-xl); }
    .cowork-card-reverse { direction: ltr; }
    .before-after { grid-template-columns: 1fr; }
    .ba-divider { padding-top: 0; }
    .ba-arrow { transform: rotate(90deg); }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-toggle { display: block; }

    .nav-links.open {
        display: flex; flex-direction: column; position: absolute;
        top: 64px; left: 0; right: 0; background: var(--cs-bg-0);
        border-bottom: 1px solid var(--cs-bg-3); padding: var(--space-xl);
        gap: var(--space-lg); box-shadow: var(--shadow-lg);
    }

    .hero { padding: 120px 0 0; }
    .hero-title { font-size: 34px; }
    .hero-actions { flex-direction: column; }
    .hero-photo-strip { grid-template-columns: repeat(2, 1fr); }
    .hero-photo:nth-child(3), .hero-photo:nth-child(4) { display: none; }

    .stats-row { grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); }

    .section { padding: var(--space-4xl) 0; }

    .skills-grid { grid-template-columns: 1fr; }
    .day-grid { grid-template-columns: 1fr; }
    .insight-types-grid { grid-template-columns: 1fr 1fr; }
    .vis-features-row { grid-template-columns: repeat(2, 1fr); }

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

    .footer-inner { flex-direction: column; text-align: center; }
    .footer-links { justify-content: center; }

    .photo-break-inner { height: 300px; }
}

@media (max-width: 480px) {
    .insight-types-grid { grid-template-columns: 1fr; }
    .install-step { flex-direction: column; gap: var(--space-md); }
    .vis-features-row { grid-template-columns: 1fr; }
    .hero-photo-strip { grid-template-columns: 1fr 1fr; }
    .guide-routine { grid-template-columns: 1fr; }
    .guide-cmd-grid { grid-template-columns: 1fr; }
    .guide-quickref-grid { grid-template-columns: 1fr; }
    .guide-insight-grid { grid-template-columns: 1fr; }
    .guide-choice { flex-direction: column; }
}

/* ============================================================
   GUIDE PAGE
   ============================================================ */
.guide-intro {
    display: flex;
    gap: var(--space-xl);
    align-items: flex-start;
    padding: var(--space-2xl);
    background: var(--cs-bg-1);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4xl);
    border-left: 4px solid var(--cs-accent);
}
.guide-intro-icon { color: var(--cs-accent); flex-shrink: 0; margin-top: 2px; }
.guide-intro h3 { margin: 0 0 var(--space-sm) 0; }
.guide-intro p { margin: 0 0 var(--space-sm) 0; color: var(--cs-text-secondary); }
.guide-intro p:last-child { margin-bottom: 0; }

.guide-part { margin-bottom: var(--space-5xl); }
.guide-part-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}
.guide-part-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--cs-accent);
    color: white;
    font-size: 1.25rem;
    font-weight: 700;
    flex-shrink: 0;
}
.guide-part-header h2 { margin: 0; }
.guide-part-time { color: var(--cs-text-tertiary); margin: var(--space-xs) 0 0 0; font-size: 0.9rem; }

.guide-steps { display: flex; flex-direction: column; gap: var(--space-2xl); }
.guide-step {
    display: flex;
    gap: var(--space-xl);
    align-items: flex-start;
}
.guide-step-marker {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--cs-bg-2);
    color: var(--cs-text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    flex-shrink: 0;
    margin-top: 2px;
}
.guide-step-content { flex: 1; min-width: 0; }
.guide-step-content h4 { margin: 0 0 var(--space-sm) 0; }
.guide-step-content p { color: var(--cs-text-secondary); margin: 0 0 var(--space-lg) 0; }
.guide-step-content p:last-child { margin-bottom: 0; }

.guide-output-list {
    list-style: none;
    padding: 0;
    margin: var(--space-lg) 0;
}
.guide-output-list li {
    padding: var(--space-sm) 0;
    padding-left: var(--space-lg);
    border-left: 2px solid var(--cs-bg-3);
    color: var(--cs-text-secondary);
    margin-bottom: var(--space-sm);
}

.guide-choice {
    display: flex;
    gap: var(--space-xl);
    align-items: stretch;
    margin: var(--space-lg) 0;
}
.guide-choice-option {
    flex: 1;
    padding: var(--space-xl);
    background: var(--cs-bg-1);
    border-radius: var(--radius-md);
    border: 1px solid var(--cs-bg-3);
}
.guide-choice-cmd {
    display: inline-block;
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--cs-accent);
    margin-bottom: var(--space-sm);
}
.guide-choice-option p { margin: 0; font-size: 0.9rem; }
.guide-choice-divider {
    display: flex;
    align-items: center;
    color: var(--cs-text-tertiary);
    font-size: 0.85rem;
    font-weight: 500;
}

.guide-tip {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: #fffbeb;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--cs-text-secondary);
    margin-top: var(--space-lg);
}
.guide-tip i { color: #f59e0b; flex-shrink: 0; margin-top: 2px; }

.guide-routine {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}
.guide-routine-card {
    background: var(--cs-bg-0);
    border: 1px solid var(--cs-bg-3);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.guide-routine-time {
    padding: var(--space-md) var(--space-xl);
    background: var(--cs-bg-8);
    color: white;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.guide-routine-content { padding: var(--space-xl); }
.guide-routine-content p { color: var(--cs-text-secondary); font-size: 0.9rem; margin: var(--space-md) 0 0 0; }

.guide-cmd-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin: var(--space-lg) 0;
}
.guide-cmd-item {
    padding: var(--space-lg);
    background: var(--cs-bg-1);
    border-radius: var(--radius-md);
}
.guide-cmd-item code {
    display: block;
    font-family: var(--font-mono);
    color: var(--cs-accent);
    font-size: 0.85rem;
    margin-bottom: var(--space-xs);
}
.guide-cmd-item span { font-size: 0.85rem; color: var(--cs-text-secondary); }

.guide-insight-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-md);
    margin: var(--space-xl) 0;
}
.guide-insight-item {
    padding: var(--space-lg);
    background: var(--cs-bg-1);
    border-radius: var(--radius-md);
    border-top: 3px solid var(--accent);
}
.guide-insight-item strong { display: block; font-size: 0.85rem; margin-bottom: var(--space-xs); }
.guide-insight-item span { font-size: 0.8rem; color: var(--cs-text-tertiary); font-style: italic; }

.guide-tips-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.guide-tips-list li {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--cs-bg-2);
    color: var(--cs-text-secondary);
    font-size: 0.95rem;
}
.guide-tips-list li:last-child { border-bottom: none; }

.guide-quickref {
    margin-top: var(--space-4xl);
    padding: var(--space-2xl);
    background: var(--cs-bg-8);
    border-radius: var(--radius-lg);
    color: white;
}
.guide-quickref h3 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin: 0 0 var(--space-xl) 0;
    color: white;
}
.guide-quickref-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}
.guide-quickref-item {
    padding: var(--space-lg);
    background: rgba(255,255,255,0.06);
    border-radius: var(--radius-md);
}
.guide-quickref-item code {
    display: block;
    font-family: var(--font-mono);
    color: var(--cs-accent);
    font-size: 0.85rem;
    margin-bottom: var(--space-xs);
}
.guide-quickref-item span { font-size: 0.85rem; color: rgba(255,255,255,0.6); }

@media (max-width: 768px) {
    .guide-intro { flex-direction: column; }
    .guide-routine { grid-template-columns: 1fr; }
    .guide-cmd-grid { grid-template-columns: 1fr; }
    .guide-insight-grid { grid-template-columns: 1fr 1fr; }
    .guide-quickref-grid { grid-template-columns: 1fr; }
    .guide-choice { flex-direction: column; }
    .guide-step { flex-direction: column; gap: var(--space-md); }
    .oss-repos { grid-template-columns: 1fr; }
    .oss-contribute-grid { grid-template-columns: 1fr; }
    .oss-principles-grid { grid-template-columns: 1fr; }
    .oss-flow { flex-direction: column; align-items: center; }
    .oss-flow-arrow { transform: rotate(90deg); }
    .oss-contents-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   OPEN SOURCE PAGE
   ============================================================ */
.page-hero-dark {
    background: var(--cs-bg-8);
    color: white;
}
.page-hero-dark .page-hero-title { color: white; }
.page-hero-dark .page-hero-sub { color: rgba(255,255,255,0.7); }

.oss-philosophy {
    max-width: 720px;
    margin: 0 auto var(--space-4xl) auto;
}
.oss-philosophy h2 { margin-bottom: var(--space-lg); }
.oss-philosophy p { color: var(--cs-text-secondary); line-height: 1.7; margin-bottom: var(--space-lg); }

.oss-repos {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-4xl);
}
.oss-repo-card {
    border: 1px solid var(--cs-bg-3);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    display: flex;
    flex-direction: column;
}
.oss-repo-header {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}
.oss-repo-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--cs-bg-8);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.oss-repo-icon-purple { background: var(--cs-purple); }
.oss-repo-header h3 { margin: 0; font-size: 1.1rem; }
.oss-repo-type {
    font-size: 0.8rem;
    color: var(--cs-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 500;
}
.oss-repo-desc { color: var(--cs-text-secondary); margin-bottom: var(--space-xl); line-height: 1.6; }

.oss-repo-stats {
    display: flex;
    gap: var(--space-xl);
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--cs-bg-2);
    border-bottom: 1px solid var(--cs-bg-2);
    margin-bottom: var(--space-xl);
}
.oss-stat { display: flex; flex-direction: column; gap: 2px; }
.oss-stat-label { font-size: 0.75rem; color: var(--cs-text-tertiary); text-transform: uppercase; letter-spacing: 0.04em; }
.oss-stat-value { font-size: 0.85rem; font-weight: 500; }

.oss-repo-contents { margin-bottom: var(--space-xl); flex: 1; }
.oss-repo-contents h4 { margin-bottom: var(--space-md); font-size: 0.9rem; }
.oss-contents-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}
.oss-content-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--cs-bg-1);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
}
.oss-content-item code {
    font-family: var(--font-mono);
    color: var(--cs-accent);
    font-weight: 500;
    font-size: 0.8rem;
    flex-shrink: 0;
}
.oss-content-item span { color: var(--cs-text-secondary); }
.oss-content-item i { color: var(--cs-text-tertiary); flex-shrink: 0; }

.oss-repo-actions { display: flex; gap: var(--space-md); flex-wrap: wrap; }

/* Connection flow */
.oss-connection {
    padding: var(--space-2xl);
    background: var(--cs-bg-1);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4xl);
}
.oss-connection h3 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-2xl);
}
.oss-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}
.oss-flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    text-align: center;
}
.oss-flow-step span { font-size: 0.8rem; color: var(--cs-text-secondary); max-width: 140px; }
.oss-flow-node {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--cs-bg-3);
    color: var(--cs-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}
.oss-flow-node-blue { background: #dbeafe; color: var(--cs-accent); }
.oss-flow-node-green { background: #dcfce7; color: #16a34a; }
.oss-flow-node-purple { background: #ede9fe; color: var(--cs-purple); }
.oss-flow-arrow { color: var(--cs-bg-4); }
.oss-flow-note { text-align: center; font-size: 0.85rem; color: var(--cs-text-tertiary); margin: 0; }

/* Contribute */
.oss-contribute { margin-bottom: var(--space-4xl); }
.oss-contribute > h2 { margin-bottom: var(--space-sm); }
.oss-contribute > p { color: var(--cs-text-secondary); margin-bottom: var(--space-2xl); }
.oss-contribute-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}
.oss-contribute-card {
    padding: var(--space-2xl);
    border: 1px solid var(--cs-bg-3);
    border-radius: var(--radius-lg);
}
.oss-contribute-card i { color: var(--cs-accent); margin-bottom: var(--space-md); }
.oss-contribute-card h4 { margin: 0 0 var(--space-sm) 0; }
.oss-contribute-card p { color: var(--cs-text-secondary); font-size: 0.9rem; line-height: 1.6; margin: 0 0 var(--space-lg) 0; }
.oss-contribute-card a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--cs-accent);
    text-decoration: none;
}
.oss-contribute-card a:hover { text-decoration: underline; }

/* Principles */
.oss-principles > h2 { margin-bottom: var(--space-2xl); }
.oss-principles-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}
.oss-principle {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
}
.oss-principle-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--cs-bg-1);
    color: var(--cs-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg) auto;
}
.oss-principle h4 { margin: 0 0 var(--space-sm) 0; }
.oss-principle p { color: var(--cs-text-secondary); font-size: 0.85rem; line-height: 1.6; margin: 0; }

@media (max-width: 768px) {
    .oss-principles-grid { grid-template-columns: 1fr 1fr; }
    .oss-repo-stats { flex-direction: column; gap: var(--space-md); }
}

/* ============================================================
   Cowork page
   ============================================================ */

/* Chat mock */
.cowork-chat-mock {
    background: var(--cs-bg-1); border-radius: 12px; padding: var(--space-md);
    display: flex; flex-direction: column; gap: var(--space-md);
    border: 1px solid var(--cs-bg-3); margin: var(--space-md) 0;
}
.cowork-chat-compact { padding: var(--space-sm) var(--space-md); gap: var(--space-sm); }
.cowork-chat-user, .cowork-chat-claude {
    padding: var(--space-sm) var(--space-md); border-radius: 10px;
    font-size: 0.85rem; line-height: 1.6;
}
.cowork-chat-user {
    background: var(--cs-bg-8); color: #fff; align-self: flex-end; max-width: 90%;
}
.cowork-chat-claude {
    background: var(--cs-bg-0); border: 1px solid var(--cs-bg-3); align-self: flex-start; max-width: 90%;
}
.cowork-chat-compact .cowork-chat-user { align-self: stretch; max-width: 100%; }

/* File list mock */
.cowork-files-mock {
    background: var(--cs-bg-1); border-radius: 10px; padding: var(--space-md);
    border: 1px solid var(--cs-bg-3); margin: var(--space-md) 0;
    display: flex; flex-direction: column; gap: var(--space-xs);
}
.cowork-file {
    display: flex; align-items: center; gap: var(--space-sm);
    font-size: 0.85rem; font-family: var(--font-mono); padding: var(--space-xs) var(--space-sm);
    border-radius: 6px;
}
.cowork-file.new { background: rgba(34, 197, 94, 0.08); }
.cowork-file-badge {
    font-size: 0.7rem; font-family: var(--font-sans); text-transform: uppercase;
    background: rgba(34, 197, 94, 0.15); color: #16a34a; padding: 1px 6px; border-radius: 4px;
    margin-left: auto;
}

/* Comparison cards */
.cowork-comparison {
    display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg);
    margin: var(--space-lg) 0;
}
.cowork-compare-card {
    background: var(--cs-bg-1); border-radius: 12px; padding: var(--space-lg);
    border: 1px solid var(--cs-bg-3);
}
.cowork-compare-highlight {
    background: rgba(59, 130, 246, 0.04); border-color: rgba(59, 130, 246, 0.2);
}
.cowork-compare-header {
    display: flex; align-items: center; gap: var(--space-sm); margin-bottom: var(--space-md);
}
.cowork-compare-header h4 { margin: 0; }
.cowork-compare-list {
    list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--space-sm);
    font-size: 0.9rem; color: var(--cs-text-secondary);
}
.cowork-compare-list li { padding-left: var(--space-md); position: relative; }
.cowork-compare-list li::before {
    content: ''; position: absolute; left: 0; top: 8px;
    width: 6px; height: 6px; border-radius: 50%; background: var(--cs-bg-5);
}
.cowork-compare-highlight .cowork-compare-list li::before { background: var(--cs-accent); }

/* Instruction mock */
.cowork-instruction-mock {
    background: var(--cs-bg-1); border-radius: 10px; padding: var(--space-md);
    border: 1px solid var(--cs-bg-3); margin: var(--space-md) 0;
}
.cowork-instruction-label {
    font-size: 0.75rem; font-weight: 600; text-transform: uppercase;
    color: var(--cs-text-tertiary); margin-bottom: var(--space-sm); letter-spacing: 0.03em;
}
.cowork-instruction-text {
    font-size: 0.85rem; line-height: 1.7; color: var(--cs-text-secondary);
    font-style: italic;
}

/* Guide CTA */
.guide-cta {
    text-align: center; padding: var(--space-2xl) 0 var(--space-lg);
    color: var(--cs-text-secondary); font-size: 0.95rem;
}
.guide-cta p { margin: var(--space-xs) 0; }
.guide-cta a { color: var(--cs-accent); font-weight: 500; }

/* Quick ref note */
.guide-quickref-note {
    color: var(--cs-text-tertiary); font-size: 0.85rem; margin: 0 0 var(--space-md) 0;
}

@media (max-width: 768px) {
    .cowork-comparison { grid-template-columns: 1fr; }
    .cowork-chat-user, .cowork-chat-claude { max-width: 100%; }
}