@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');

:root {
    --canvas: #f7f7f4;
    --canvas-soft: #fafaf7;
    --surface-card: #ffffff;
    --surface-strong: #e6e5e0;
    --hairline: #e6e5e0;
    --hairline-soft: #efeee8;
    --hairline-strong: #cfcdc4;
    --ink: #26251e;
    --body: #5a5852;
    --muted: #807d72;
    --muted-soft: #a09c92;
    --primary: #f54e00;
    --primary-active: #d04200;
    --on-primary: #ffffff;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--canvas);
    color: var(--body);
    font-size: 16px;
    line-height: 1.5;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', system-ui, sans-serif;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.02em;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.ventra-navbar {
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.ventra-logo {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 18px;
    color: var(--ink);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.ventra-logo span {
    color: var(--primary);
}

.ventra-nav-links {
    display: flex;
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.ventra-nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--body);
    text-decoration: none;
    transition: color 0.15s;
}

.ventra-nav-links a:hover,
.ventra-nav-links a.active {
    color: var(--ink);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2326251e' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.sidebar-nav {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 20px;
    position: sticky;
    top: 80px;
}

.sidebar-nav h5 {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--hairline-soft);
}

.sidebar-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav li {
    margin-bottom: 4px;
}

.sidebar-nav a {
    font-size: 14px;
    font-weight: 500;
    color: var(--body);
    text-decoration: none;
    display: block;
    padding: 6px 10px;
    border-radius: 6px;
    transition: background 0.1s, color 0.1s;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: var(--surface-strong);
    color: var(--ink);
    text-decoration: none;
}

.breadcrumb-ventra {
    background: transparent;
    padding: 12px 0;
    margin-bottom: 16px;
    font-size: 13px;
    color: var(--muted);
    display: flex;
    gap: 6px;
    align-items: center;
    flex-wrap: wrap;
}

.breadcrumb-ventra a {
    color: var(--muted);
    text-decoration: none;
}

.breadcrumb-ventra a:hover {
    color: var(--ink);
}

.breadcrumb-sep {
    color: var(--hairline-strong);
}

.page-title {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.02em;
    color: var(--ink);
    margin-bottom: 8px;
    line-height: 1.2;
}

.page-lead {
    font-size: 18px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 32px;
}

.section-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 8px;
    display: block;
}

.toc-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 20px 24px;
    margin-bottom: 32px;
}

.toc-card h4 {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 12px;
}

.toc-card ol {
    padding-left: 20px;
    margin: 0;
}

.toc-card li {
    margin-bottom: 6px;
    font-size: 14px;
}

.toc-card a {
    color: var(--body);
    text-decoration: none;
}

.toc-card a:hover {
    color: var(--ink);
}

.entry-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 16px;
}

.entry-card h2 {
    font-size: 22px;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: var(--ink);
    margin-bottom: 12px;
}

.entry-card h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
    margin-top: 20px;
}

.entry-card p {
    font-size: 15px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 12px;
}

.entry-card ul, .entry-card ol {
    padding-left: 20px;
    margin-bottom: 12px;
}

.entry-card li {
    font-size: 15px;
    color: var(--body);
    margin-bottom: 4px;
    line-height: 1.6;
}

.entry-card table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    margin-bottom: 16px;
}

.entry-card th {
    background: var(--canvas);
    color: var(--ink);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 10px 12px;
    border: 1px solid var(--hairline);
    text-align: left;
}

.entry-card td {
    padding: 10px 12px;
    border: 1px solid var(--hairline);
    color: var(--body);
    font-size: 14px;
}

.entry-card tr:nth-child(even) td {
    background: var(--canvas-soft);
}

.disclaimer-card {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: 8px;
    padding: 14px 18px;
    margin: 20px 0;
    font-size: 13px;
    color: var(--muted);
    line-height: 1.6;
}

.disclaimer-card strong {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--muted-soft);
    display: block;
    margin-bottom: 4px;
}

.faq-item {
    border: 1px solid var(--hairline);
    border-radius: 8px;
    margin-bottom: 8px;
    overflow: hidden;
}

.faq-item summary {
    cursor: pointer;
    padding: 14px 18px;
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
    background: var(--surface-card);
    list-style: none;
    user-select: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
    content: '+';
    font-size: 18px;
    color: var(--muted);
    font-weight: 400;
}

.faq-item[open] summary::after { content: '−'; }

.faq-item[open] summary {
    background: var(--canvas-soft);
    border-bottom: 1px solid var(--hairline);
}

.faq-body {
    padding: 14px 18px;
    font-size: 14px;
    color: var(--body);
    line-height: 1.7;
    background: var(--surface-card);
}

.related-section {
    border-top: 1px solid var(--hairline);
    padding-top: 32px;
    margin-top: 48px;
}

.related-section h3 {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}

.related-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 20px;
    text-decoration: none;
    display: block;
    transition: border-color 0.15s;
}

.related-card:hover {
    border-color: var(--hairline-strong);
    text-decoration: none;
}

.related-card .rc-cat {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 6px;
}

.related-card .rc-title {
    font-size: 16px;
    font-weight: 500;
    color: var(--ink);
    line-height: 1.4;
}

.btn-ventra {
    display: inline-block;
    background: var(--primary);
    color: var(--on-primary);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s;
    line-height: 1;
}

.btn-ventra:hover {
    background: var(--primary-active);
    color: var(--on-primary);
    text-decoration: none;
}

.btn-ventra-secondary {
    display: inline-block;
    background: var(--surface-card);
    color: var(--ink);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 8px;
    border: 1px solid var(--hairline-strong);
    cursor: pointer;
    text-decoration: none;
    transition: border-color 0.15s;
}

.btn-ventra-secondary:hover {
    border-color: var(--ink);
    text-decoration: none;
}

.form-control-ventra {
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 15px;
    color: var(--ink);
    width: 100%;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
}

.form-control-ventra:focus {
    border-color: var(--ink);
}

.form-label-ventra {
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 4px;
    display: block;
}

.form-success {
    display: none;
    background: #e8f5e9;
    border: 1px solid #a5d6a7;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 14px;
    color: #2e7d32;
    margin-top: 12px;
}

.ventra-footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 48px 0 32px;
    margin-top: 80px;
}

.ventra-footer-logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.ventra-footer-logo span {
    color: var(--primary);
}

.ventra-footer h5 {
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
}

.ventra-footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ventra-footer li {
    margin-bottom: 8px;
}

.ventra-footer a {
    font-size: 14px;
    color: var(--body);
    text-decoration: none;
}

.ventra-footer a:hover {
    color: var(--ink);
}

.ventra-footer-bottom {
    border-top: 1px solid var(--hairline-soft);
    padding-top: 24px;
    margin-top: 32px;
}

.ventra-footer-bottom p {
    font-size: 13px;
    color: var(--muted);
    margin: 0 0 6px;
}

.cookie-ventra {
    display: none;
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 340px;
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: 12px;
    padding: 20px;
    z-index: 9999;
    box-shadow: 0 4px 24px rgba(38,37,30,0.08);
}

.cookie-ventra p {
    font-size: 14px;
    color: var(--body);
    margin-bottom: 14px;
    line-height: 1.5;
}

.cookie-ventra-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
}

.hero-section {
    padding: 80px 0 64px;
}

.hero-label {
    display: inline-block;
    background: var(--surface-strong);
    color: var(--ink);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 9999px;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 52px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 20px;
}

.entry-index-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 24px;
    text-decoration: none;
    display: block;
    transition: border-color 0.15s;
    height: 100%;
    color: var(--body);
}

.entry-index-card:hover {
    border-color: var(--hairline-strong);
    text-decoration: none;
    color: var(--body);
}

.entry-index-card h3 {
    font-size: 18px;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.entry-index-card p {
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

.entry-tag {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 10px;
    display: block;
}

@media (max-width: 767px) {
    .hero-title {
        font-size: 32px;
    }

    .page-title {
        font-size: 26px;
    }

    .sidebar-nav {
        position: static;
        margin-bottom: 24px;
    }

    .cookie-ventra {
        width: calc(100% - 32px);
        right: 16px;
        bottom: 16px;
    }
}