:root {
    /* ==== Color Palette (Notion/Linear inspired) ==== */
    --bg: #ffffff;
    --bg-subtle: #fafafa;
    --bg-muted: #f4f4f5;
    --sidebar-bg: #fbfbfc;

    --text: #1d1d1f;
    --text-secondary: #515155;
    --text-muted: #86868b;

    --border: #ececee;
    --border-strong: #d8d8dc;

    --primary: #5e6ad2;
    --primary-hover: #4e59b8;
    --primary-subtle: #f2f3fc;
    --primary-subtle-hover: #e8ebff;
    --primary-border: #d8dcf5;

    /* Semantic colors - muted / pastel */
    --info-bg: #f2f5fb;
    --info-border: #d8e1f3;
    --info-text: #2c4a7c;

    --success-bg: #f0f9f4;
    --success-border: #cfe8d9;
    --success-text: #2d6a42;

    --warning-bg: #fdf7ed;
    --warning-border: #f2e4c4;
    --warning-text: #855515;

    --danger-bg: #fdf2f2;
    --danger-border: #f4cfcf;
    --danger-text: #9b2c2c;

    --code-bg: #f4f4f5;
    --code-text: #373740;

    /* Typography */
    --font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;

    /* Layout */
    --sidebar-width: 272px;
    --content-max-width: 880px;

    /* Shadows - very subtle */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.06);

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 15px;
    overflow-x: hidden;
    font-feature-settings: "palt";
}

/* ============================================
   Layout
   ============================================ */
.docs-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    z-index: 10;
    transition: transform 0.25s ease;
    flex-shrink: 0;
}

.sidebar-header {
    padding: 24px 24px 20px;
    border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.4;
    letter-spacing: -0.01em;
}

.subtitle {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
    display: block;
    margin-top: 2px;
}

.version-badge {
    margin-top: 10px;
    display: inline-block;
    padding: 3px 8px;
    background-color: var(--primary-subtle);
    color: var(--primary);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.01em;
}

/* Search */
.search-wrap {
    padding: 16px 20px 8px;
    position: relative;
}

.search-wrap input {
    width: 100%;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    outline: none;
    font-size: 13px;
    font-family: inherit;
    background-color: var(--bg);
    color: var(--text);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.search-wrap input::placeholder {
    color: var(--text-muted);
}

.search-wrap input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-subtle);
}

.search-results {
    position: absolute;
    top: calc(100% - 4px);
    left: 20px;
    right: 20px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    z-index: 100;
    display: none;
}

.search-results.visible {
    display: block;
}

.search-result-item {
    padding: 10px 14px;
    cursor: pointer;
    border-bottom: 1px solid var(--border);
    transition: background-color 0.1s;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background-color: var(--primary-subtle);
}

.search-result-page {
    font-size: 11px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 2px;
}

.search-result-section {
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
}

.search-result-context {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
    line-height: 1.5;
}

.search-result-context mark {
    background-color: var(--warning-bg);
    color: var(--text);
    padding: 0 2px;
    border-radius: 2px;
}

.search-no-results {
    padding: 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

/* Navigation */
.sidebar-nav {
    flex-grow: 1;
    overflow-y: auto;
    padding: 8px 12px 20px;
}

.nav-group {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    padding: 16px 12px 6px;
    text-transform: uppercase;
}

.nav-group.collapsible {
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-radius: var(--radius-sm);
    transition: color 0.15s, background-color 0.15s;
}

.nav-group.collapsible:hover {
    color: var(--text);
}

.nav-group.collapsible::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    transition: transform 0.2s ease;
    opacity: 0.5;
}

.nav-group.collapsed::after {
    transform: rotate(-90deg);
}

/* 折りたたみ時のリンク非表示は、app.js が .nav-link.hidden クラスを
   data-parent-group 属性で特定のグループのリンクだけに付与することで制御する */

.nav-link {
    display: block;
    padding: 7px 12px;
    margin: 1px 0;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13.5px;
    border-radius: var(--radius-sm);
    transition: background-color 0.12s, color 0.12s;
    line-height: 1.5;
}

.nav-link:hover {
    background-color: var(--bg-muted);
    color: var(--text);
}

.nav-link.active {
    background-color: var(--primary-subtle);
    color: var(--primary);
    font-weight: 600;
}

.nav-link.hidden {
    display: none;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: var(--bg);
    position: relative;
    min-width: 0;
}

.content-header {
    height: 56px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 32px;
    background-color: var(--bg);
    flex-shrink: 0;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 20px;
    color: var(--text-secondary);
    cursor: pointer;
    margin-right: 16px;
    padding: 4px;
}

.breadcrumb {
    color: var(--text-muted);
    font-size: 13px;
}

.content-frame {
    flex-grow: 1;
    overflow-y: auto;
    position: relative;
    padding: 56px 64px 96px;
    max-width: var(--content-max-width);
    margin: 0 auto;
    width: 100%;
}

/* ============================================
   Document Body
   ============================================ */
.doc-body {
    background-color: transparent;
}

.doc-content h1 {
    font-size: 34px;
    margin-bottom: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
    line-height: 1.25;
}

.doc-content h2 {
    font-size: 22px;
    margin-top: 56px;
    margin-bottom: 14px;
    font-weight: 650;
    color: var(--text);
    letter-spacing: -0.015em;
    line-height: 1.35;
}

.doc-content h3 {
    font-size: 17px;
    margin-top: 32px;
    margin-bottom: 10px;
    font-weight: 650;
    color: var(--text);
    letter-spacing: -0.01em;
    line-height: 1.4;
}

.doc-content h4 {
    font-size: 15px;
    margin-top: 24px;
    margin-bottom: 8px;
    font-weight: 650;
    color: var(--text);
}

.doc-content h5 {
    font-size: 14px;
    margin-top: 20px;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--text);
}

.doc-content p {
    margin-bottom: 16px;
    line-height: 1.8;
    color: var(--text);
}

.doc-content ul, .doc-content ol {
    margin-bottom: 20px;
    padding-left: 24px;
}

.doc-content li {
    margin-bottom: 6px;
    line-height: 1.75;
    color: var(--text);
}

.doc-content strong {
    font-weight: 650;
    color: var(--text);
}

.doc-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 48px 0;
}

.doc-content a {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s;
}

.doc-content a:hover {
    border-bottom-color: var(--primary);
}

/* ============================================
   Tables
   ============================================ */
.doc-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 13.5px;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
}

.doc-content thead th {
    background-color: var(--bg-muted);
    font-weight: 600;
    text-align: left;
    padding: 11px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    font-size: 12.5px;
    text-transform: none;
    letter-spacing: 0;
    white-space: nowrap;
}

.doc-content tbody td {
    padding: 11px 16px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
    color: var(--text-secondary);
    line-height: 1.65;
}

.doc-content tbody tr:last-child td {
    border-bottom: none;
}

.doc-content tbody tr:hover {
    background-color: var(--bg-subtle);
}

/* 横スクロール可能なテーブルラッパー */
.table-scroll-wrap {
    overflow-x: auto;
    margin: 24px 0;
    border-radius: var(--radius-md);
}

.table-scroll-wrap table {
    margin: 0;
}

/* ============================================
   Page TOC
   ============================================ */
.page-toc {
    background-color: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px 22px;
    margin-bottom: 40px;
}

.page-toc h4 {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 10px;
    margin-top: 0;
}

.page-toc ol {
    list-style: none;
    padding-left: 0;
    margin-bottom: 0;
    counter-reset: toc-counter;
}

.page-toc li {
    margin-bottom: 3px;
}

.page-toc a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13.5px;
    line-height: 1.6;
    transition: color 0.12s;
    border-bottom: none;
    display: block;
    padding: 2px 0;
}

.page-toc a:hover {
    color: var(--primary);
    border-bottom: none;
}

.page-toc .toc-h3 {
    padding-left: 18px;
    font-size: 13px;
}

.page-toc .toc-h3 a {
    color: var(--text-muted);
}

/* ============================================
   Cards
   ============================================ */
.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 14px;
    margin-top: 28px;
}

.card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 22px;
    cursor: pointer;
    transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
    text-decoration: none;
    color: var(--text);
    display: block;
}

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

.card h3 {
    margin-top: 0;
    margin-bottom: 6px;
    font-size: 15px;
    font-weight: 650;
    color: var(--text);
    letter-spacing: -0.01em;
}

.card p {
    margin-bottom: 0;
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
}

.card .card-tag {
    display: inline-block;
    font-size: 10.5px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.card-tag.tag-foundation {
    background: var(--primary-subtle);
    color: var(--primary);
}
.card-tag.tag-process {
    background: var(--success-bg);
    color: var(--success-text);
}
.card-tag.tag-japan {
    background: var(--danger-bg);
    color: var(--danger-text);
}
.card-tag.tag-reference {
    background: var(--warning-bg);
    color: var(--warning-text);
}

/* Quick Start Cards - NO gradient, just subtle fill */
.quick-start-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 12px;
    margin: 24px 0 40px;
}

.quick-card {
    background: var(--primary-subtle);
    border: 1px solid var(--primary-border);
    color: var(--text);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    cursor: pointer;
    transition: background-color 0.15s, transform 0.15s, box-shadow 0.15s;
    text-decoration: none;
    display: block;
}

.quick-card:hover {
    background-color: var(--primary-subtle-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
    border-bottom-color: var(--primary-border);
}

.quick-card h3 {
    color: var(--text);
    margin-top: 0;
    font-size: 14px;
    margin-bottom: 4px;
    font-weight: 650;
    letter-spacing: -0.01em;
}

.quick-card p {
    color: var(--text-muted);
    font-size: 12.5px;
    margin-bottom: 0;
    line-height: 1.55;
}

/* ============================================
   Learning Path
   ============================================ */
.learning-path {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    margin: 24px 0;
    padding: 16px 20px;
    background-color: var(--bg-subtle);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.learning-path-step a {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 6px 12px;
    font-size: 12.5px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.15s;
    white-space: nowrap;
    display: inline-block;
}

.learning-path-step a:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-subtle);
    border-bottom-color: var(--primary);
}

.learning-path-arrow {
    color: var(--text-muted);
    font-size: 14px;
    user-select: none;
}

/* ============================================
   Alerts / Blockquotes
   ============================================ */
blockquote {
    padding: 14px 18px;
    border-left: 3px solid var(--border-strong);
    margin: 20px 0;
    background: var(--bg-subtle);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-size: 14px;
    color: var(--text-secondary);
}

blockquote p {
    margin-bottom: 0;
    color: inherit;
}

blockquote strong {
    color: var(--text);
}

.alert-info {
    border-left-color: var(--primary);
    background-color: var(--info-bg);
    color: var(--info-text);
}

.alert-info strong {
    color: var(--info-text);
}

.alert-danger {
    border-left-color: #c94b4b;
    background-color: var(--danger-bg);
    color: var(--danger-text);
}

.alert-danger strong {
    color: var(--danger-text);
}

.alert-success {
    border-left-color: #4ba074;
    background-color: var(--success-bg);
    color: var(--success-text);
}

.alert-success strong {
    color: var(--success-text);
}

.info-card {
    padding: 18px 22px;
    border-radius: var(--radius-md);
    margin: 24px 0;
    border: 1px solid var(--border);
}

.warning-card {
    background-color: var(--warning-bg);
    border-color: var(--warning-border);
    color: var(--warning-text);
}

.warning-card h3 {
    margin-top: 0;
    color: var(--warning-text);
    font-size: 15px;
}

.warning-card p {
    color: var(--warning-text);
    margin-bottom: 0;
    font-size: 13.5px;
}

/* ============================================
   Code
   ============================================ */
code {
    background-color: var(--code-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.88em;
    color: var(--code-text);
    border: 1px solid var(--border);
}

.doc-content a code {
    color: var(--primary);
}

/* ============================================
   FAQ
   ============================================ */
.faq-item {
    background: var(--bg);
    padding: 22px 24px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    border: 1px solid var(--border);
}

.faq-item h4 {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 15px;
    color: var(--text);
    font-weight: 650;
}

/* ============================================
   Flowchart
   ============================================ */
.flowchart {
    margin: 28px 0;
    padding: 24px;
    background: var(--bg-subtle);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.flow-node {
    padding: 12px 18px;
    border-radius: var(--radius-sm);
    text-align: center;
    font-size: 13.5px;
    font-weight: 500;
    max-width: 380px;
    margin: 0 auto;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
}

.flow-start {
    background: var(--primary-subtle);
    border-color: var(--primary-border);
    color: var(--primary);
    font-weight: 600;
    border-radius: 20px;
}

.flow-decision {
    background: var(--warning-bg);
    border-color: var(--warning-border);
    color: var(--warning-text);
    font-weight: 600;
    position: relative;
}

.flow-decision::before {
    content: '';
    position: absolute;
    top: -7px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 7px solid transparent;
    border-right: 7px solid transparent;
    border-bottom: 7px solid var(--warning-border);
}

.flow-action {
    background: var(--bg);
    border-color: var(--border);
    color: var(--text);
}

.flow-result {
    font-weight: 600;
}

.flow-result.flow-safe {
    background: var(--success-bg);
    border-color: var(--success-border);
    color: var(--success-text);
}

.flow-result.flow-warn {
    background: var(--danger-bg);
    border-color: var(--danger-border);
    color: var(--danger-text);
}

.flow-arrow {
    text-align: center;
    font-size: 16px;
    color: var(--text-muted);
    padding: 6px 0;
}

.flow-branch {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 6px;
}

.flow-path {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.flow-label {
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 3px 10px;
    border-radius: 12px;
}

.flow-yes .flow-label {
    background: var(--success-bg);
    color: var(--success-text);
    border: 1px solid var(--success-border);
}

.flow-no .flow-label {
    background: var(--danger-bg);
    color: var(--danger-text);
    border: 1px solid var(--danger-border);
}

.flow-path .flow-node {
    width: 100%;
    max-width: none;
}

/* ============================================
   Checklist
   ============================================ */
.checklist {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    margin: 24px 0;
}

.checklist-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.checklist-header h4 {
    margin: 0;
    font-size: 14px;
    font-weight: 650;
    color: var(--text);
}

.checklist-progress {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    padding: 3px 10px;
    background: var(--bg-muted);
    border-radius: 12px;
}

.checklist-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 9px 0;
    border-bottom: 1px solid var(--border);
}

.checklist-item:last-child {
    border-bottom: none;
}

.checklist-item input[type="checkbox"] {
    margin-top: 3px;
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
    cursor: pointer;
    flex-shrink: 0;
}

.checklist-item label {
    font-size: 14px;
    line-height: 1.6;
    cursor: pointer;
    color: var(--text);
    flex: 1;
}

.checklist-item input:checked + label {
    text-decoration: line-through;
    color: var(--text-muted);
}

/* ============================================
   Step Indicator
   ============================================ */
.step-indicator {
    display: flex;
    align-items: stretch;
    gap: 8px;
    margin: 28px 0;
}

.step-item {
    flex: 1;
    text-align: center;
    padding: 12px 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: default;
    transition: background-color 0.15s, border-color 0.15s;
}

.step-item.active {
    background-color: var(--primary-subtle);
    border-color: var(--primary-border);
    color: var(--primary);
}

.step-number {
    display: block;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 2px;
    color: var(--primary);
    font-family: var(--font-mono);
}

.step-label {
    font-size: 11.5px;
    font-weight: 500;
    color: var(--text-secondary);
}

/* ============================================
   Lead Text
   ============================================ */
.lead-text {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 32px;
    font-weight: 400;
}

/* ============================================
   Section Label
   ============================================ */
.section-label {
    display: inline-block;
    font-size: 10.5px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: var(--primary-subtle);
    color: var(--primary);
}

/* ============================================
   Scrollbar (subtle)
   ============================================ */
.sidebar-nav::-webkit-scrollbar,
.content-frame::-webkit-scrollbar,
.search-results::-webkit-scrollbar,
.table-scroll-wrap::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.sidebar-nav::-webkit-scrollbar-thumb,
.content-frame::-webkit-scrollbar-thumb,
.search-results::-webkit-scrollbar-thumb,
.table-scroll-wrap::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb:hover,
.content-frame::-webkit-scrollbar-thumb:hover,
.search-results::-webkit-scrollbar-thumb:hover,
.table-scroll-wrap::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 900px) {
    .content-frame {
        padding: 40px 32px 72px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: absolute;
        left: 0;
        top: 0;
        transform: translateX(-100%);
        box-shadow: none;
    }

    .sidebar.open {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }

    .mobile-menu-btn {
        display: block;
    }

    .content-frame {
        padding: 32px 20px 64px;
    }

    .content-header {
        padding: 0 20px;
    }

    .doc-content h1 {
        font-size: 28px;
    }

    .doc-content h2 {
        font-size: 20px;
        margin-top: 44px;
    }

    .flow-branch {
        grid-template-columns: 1fr;
    }

    .step-indicator {
        flex-direction: column;
    }

    .learning-path {
        flex-direction: column;
        align-items: flex-start;
    }

    .learning-path-arrow {
        transform: rotate(90deg);
        align-self: center;
    }

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