:root {
    --canvas: #f7f7f4;
    --canvas-soft: #fafaf7;
    --surface-card: #ffffff;
    --surface-strong: #e6e5e0;
    --primary: #f54e00;
    --primary-active: #d04200;
    --ink: #26251e;
    --body-color: #5a5852;
    --muted: #807d72;
    --muted-soft: #a09c92;
    --on-primary: #ffffff;
    --hairline: #e6e5e0;
    --hairline-soft: #efeee8;
    --hairline-strong: #cfcdc4;
    --semantic-success: #1f8a65;
    --semantic-error: #cf2d56;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

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

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

a:hover {
    color: var(--primary);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

.section-sm {
    padding: 48px 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--ink);
    font-weight: 400;
    line-height: 1.2;
}

h1 {
    font-size: 56px;
    letter-spacing: -1.5px;
    line-height: 1.1;
}

h2 {
    font-size: 36px;
    letter-spacing: -0.72px;
    line-height: 1.2;
}

h3 {
    font-size: 26px;
    letter-spacing: -0.325px;
    line-height: 1.25;
}

h4 {
    font-size: 22px;
    letter-spacing: -0.11px;
    line-height: 1.3;
}

.title-md {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--ink);
}

.body-sm {
    font-size: 14px;
    line-height: 1.5;
}

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

.caption-uppercase {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
}

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

/* Navigation */
.site-nav {
    background-color: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    position: sticky;
    top: 0;
    z-index: 100;
    height: 64px;
    display: flex;
    align-items: center;
}

.site-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.nav-brand {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
}

.nav-brand span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--body-color);
    transition: color 0.15s;
}

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

.nav-hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-direction: column;
    gap: 5px;
}

.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--ink);
    border-radius: 2px;
    transition: all 0.2s;
}

.nav-mobile {
    display: none;
    background-color: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: 16px 24px;
}

.nav-mobile.open {
    display: block;
}

.nav-mobile ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.nav-mobile a {
    font-size: 16px;
    font-weight: 500;
    color: var(--body-color);
    display: block;
    padding: 4px 0;
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    background-color: var(--primary);
    color: var(--on-primary);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    height: 40px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: background-color 0.15s;
    white-space: nowrap;
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--primary-active);
    color: var(--on-primary);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    background-color: var(--surface-card);
    color: var(--ink);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--hairline-strong);
    cursor: pointer;
    transition: border-color 0.15s;
    white-space: nowrap;
}

.btn-secondary:hover {
    border-color: var(--ink);
    color: var(--ink);
}

/* Hero Section */
.hero {
    padding: 80px 0 64px;
    background-color: var(--canvas);
}

.hero-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    background-color: var(--surface-strong);
    padding: 4px 10px;
    border-radius: 9999px;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 56px;
    color: var(--ink);
    font-weight: 400;
    letter-spacing: -1.5px;
    line-height: 1.1;
    max-width: 760px;
    margin-bottom: 24px;
}

.hero p {
    font-size: 18px;
    color: var(--body-color);
    max-width: 600px;
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-image {
    margin-top: 56px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--hairline);
}

.hero-image img {
    width: 100%;
    max-height: 480px;
    object-fit: cover;
}

/* Cards */
.card {
    background-color: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 24px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.card-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.card h3 {
    font-size: 22px;
    color: var(--ink);
    margin-bottom: 12px;
}

.card h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
}

.card p {
    color: var(--body-color);
    font-size: 15px;
    line-height: 1.6;
}

.card-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    background-color: var(--surface-strong);
    padding: 4px 10px;
    border-radius: 9999px;
    margin-bottom: 12px;
}

/* Article Cards */
.article-card {
    background-color: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.15s;
}

.article-card:hover {
    border-color: var(--hairline-strong);
}

.article-card-image {
    height: 200px;
    overflow: hidden;
}

.article-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-card-body {
    padding: 20px 24px 24px;
}

.article-card-body .card-tag {
    margin-bottom: 10px;
}

.article-card-body h3 {
    font-size: 20px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.2px;
    margin-bottom: 10px;
    line-height: 1.3;
}

.article-card-body p {
    font-size: 14px;
    color: var(--body-color);
    line-height: 1.6;
    margin-bottom: 16px;
}

.article-meta {
    font-size: 12px;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Section Labels */
.section-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
    display: block;
}

.section-head {
    font-size: 36px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.72px;
    margin-bottom: 16px;
}

.section-sub {
    font-size: 16px;
    color: var(--body-color);
    max-width: 560px;
    line-height: 1.6;
    margin-bottom: 48px;
}

/* Divider */
.divider {
    height: 1px;
    background-color: var(--hairline);
    margin: 0;
}

/* Info Band */
.info-band {
    background-color: var(--canvas-soft);
    border-top: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    padding: 48px 0;
}

/* Stats Row */
.stats-row {
    display: flex;
    gap: 0;
    border: 1px solid var(--hairline);
    border-radius: 12px;
    overflow: hidden;
    background-color: var(--surface-card);
}

.stat-item {
    flex: 1;
    padding: 28px 24px;
    border-right: 1px solid var(--hairline);
    text-align: center;
}

.stat-item:last-child {
    border-right: none;
}

.stat-value {
    font-size: 32px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.72px;
    line-height: 1.1;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 13px;
    color: var(--muted);
}

/* Article Page Layout */
.article-page {
    padding: 64px 0 80px;
}

.article-page-inner {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 56px;
    align-items: start;
}

.article-content h1 {
    font-size: 42px;
    color: var(--ink);
    font-weight: 400;
    letter-spacing: -1px;
    line-height: 1.15;
    margin-bottom: 20px;
}

.article-content h2 {
    font-size: 28px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.5px;
    margin-top: 40px;
    margin-bottom: 16px;
}

.article-content h3 {
    font-size: 22px;
    font-weight: 400;
    color: var(--ink);
    margin-top: 32px;
    margin-bottom: 12px;
}

.article-content p {
    font-size: 17px;
    line-height: 1.7;
    color: var(--body-color);
    margin-bottom: 20px;
}

.article-content ul,
.article-content ol {
    margin: 16px 0 20px 24px;
}

.article-content li {
    font-size: 17px;
    line-height: 1.7;
    color: var(--body-color);
    margin-bottom: 6px;
}

.article-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-hero-img {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--hairline);
    margin-bottom: 32px;
}

.article-hero-img img {
    width: 100%;
    max-height: 440px;
    object-fit: cover;
}

.article-meta-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--hairline);
}

.article-meta-bar .card-tag {
    margin-bottom: 0;
}

.article-sidebar {
    position: sticky;
    top: 80px;
}

.sidebar-card {
    background-color: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 20px 24px;
    margin-bottom: 16px;
}

.sidebar-card h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-card ul {
    list-style: none;
}

.sidebar-card ul li {
    font-size: 14px;
    color: var(--body-color);
    padding: 6px 0;
    border-bottom: 1px solid var(--hairline-soft);
    line-height: 1.4;
}

.sidebar-card ul li:last-child {
    border-bottom: none;
}

.sidebar-card ul li a {
    color: var(--body-color);
    font-size: 14px;
}

.sidebar-card ul li a:hover {
    color: var(--primary);
}

/* Contact Form */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background-color: var(--surface-card);
    color: var(--ink);
    border: 1px solid var(--hairline-strong);
    border-radius: 8px;
    padding: 12px 16px;
    height: 44px;
    font-size: 15px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--ink);
}

.form-group textarea {
    height: auto;
    min-height: 120px;
    resize: vertical;
}

.form-message {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    margin-top: 16px;
    display: none;
}

.form-message.success {
    background-color: #e8f5f0;
    color: var(--semantic-success);
    border: 1px solid #b3ddd0;
    display: block;
}

.form-message.loading {
    background-color: var(--surface-strong);
    color: var(--muted);
    border: 1px solid var(--hairline);
    display: block;
}

/* Footer */
.site-footer {
    background-color: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 64px 0 48px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--body-color);
    line-height: 1.6;
    margin-top: 12px;
    max-width: 240px;
}

.footer-col h5 {
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col ul a {
    font-size: 14px;
    color: var(--body-color);
    transition: color 0.15s;
}

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

.footer-bottom {
    border-top: 1px solid var(--hairline);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.footer-bottom a {
    font-size: 13px;
    color: var(--muted);
}

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

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--surface-card);
    border-top: 1px solid var(--hairline);
    padding: 16px 24px;
    z-index: 999;
    display: none;
}

.cookie-banner.visible {
    display: block;
}

.cookie-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.cookie-text {
    font-size: 14px;
    color: var(--body-color);
    line-height: 1.5;
}

.cookie-text a {
    color: var(--ink);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.cookie-actions {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

.btn-cookie-accept {
    display: inline-flex;
    align-items: center;
    background-color: var(--ink);
    color: var(--canvas);
    font-size: 13px;
    font-weight: 500;
    padding: 8px 16px;
    height: 36px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
}

.btn-cookie-reject {
    display: inline-flex;
    align-items: center;
    background-color: transparent;
    color: var(--body-color);
    font-size: 13px;
    font-weight: 500;
    padding: 8px 16px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--hairline-strong);
    cursor: pointer;
}

/* Breadcrumb */
.breadcrumb {
    padding: 16px 0;
    border-bottom: 1px solid var(--hairline-soft);
    margin-bottom: 40px;
}

.breadcrumb ol {
    list-style: none;
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.breadcrumb li {
    font-size: 13px;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb li a {
    color: var(--muted);
    transition: color 0.15s;
}

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

.breadcrumb li::after {
    content: "/";
    color: var(--muted-soft);
}

.breadcrumb li:last-child::after {
    display: none;
}

/* Info Box */
.info-box {
    background-color: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: 8px;
    padding: 20px 24px;
    margin: 24px 0;
}

.info-box p {
    font-size: 15px;
    color: var(--body-color);
    margin: 0;
}

/* Page Header */
.page-header {
    padding: 64px 0 48px;
    border-bottom: 1px solid var(--hairline);
    margin-bottom: 64px;
}

.page-header h1 {
    font-size: 42px;
    color: var(--ink);
    font-weight: 400;
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.page-header p {
    font-size: 17px;
    color: var(--body-color);
    max-width: 560px;
    line-height: 1.6;
}

/* Prose (About, Privacy, Terms) */
.prose h2 {
    font-size: 26px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.3px;
    margin-top: 48px;
    margin-bottom: 16px;
}

.prose h3 {
    font-size: 20px;
    font-weight: 400;
    color: var(--ink);
    margin-top: 32px;
    margin-bottom: 12px;
}

.prose p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--body-color);
    margin-bottom: 16px;
}

.prose ul, .prose ol {
    margin: 12px 0 16px 24px;
}

.prose li {
    font-size: 16px;
    line-height: 1.7;
    color: var(--body-color);
    margin-bottom: 6px;
}

.prose a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* Disclaimer */
.disclaimer {
    background-color: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: 8px;
    padding: 16px 20px;
    margin-top: 48px;
}

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

/* Responsive */
@media (max-width: 1024px) {
    h1 { font-size: 48px; }
    .hero h1 { font-size: 44px; }
    .card-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
    .article-page-inner { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
}

@media (max-width: 768px) {
    h1 { font-size: 36px; }
    h2 { font-size: 28px; }
    .hero { padding: 48px 0 40px; }
    .hero h1 { font-size: 32px; letter-spacing: -0.8px; }
    .hero p { font-size: 16px; }
    .section { padding: 48px 0; }
    .card-grid { grid-template-columns: 1fr; }
    .card-grid-2 { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .stats-row { flex-direction: column; }
    .stat-item { border-right: none; border-bottom: 1px solid var(--hairline); }
    .stat-item:last-child { border-bottom: none; }
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }
    .cookie-inner { flex-direction: column; align-items: flex-start; }
    .article-content h1 { font-size: 30px; }
    .footer-bottom { flex-direction: column; gap: 12px; align-items: flex-start; }
}

@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
    .container { padding: 0 16px; }
}