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

:root {
    --color-canvas: #f7f7f4;
    --color-canvas-soft: #fafaf7;
    --color-surface-card: #ffffff;
    --color-surface-strong: #e6e5e0;
    --color-primary: #f54e00;
    --color-primary-active: #d04200;
    --color-ink: #26251e;
    --color-body: #5a5852;
    --color-body-strong: #26251e;
    --color-muted: #807d72;
    --color-muted-soft: #a09c92;
    --color-on-primary: #ffffff;
    --color-hairline: #e6e5e0;
    --color-hairline-soft: #efeee8;
    --color-hairline-strong: #cfcdc4;
    --color-semantic-success: #1f8a65;
    --color-semantic-error: #cf2d56;
    --rounded-xs: 4px;
    --rounded-sm: 6px;
    --rounded-md: 8px;
    --rounded-lg: 12px;
    --rounded-xl: 16px;
    --rounded-pill: 9999px;
    --spacing-xxs: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-base: 16px;
    --spacing-md: 20px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-section: 80px;
}

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

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

body {
    background-color: var(--color-canvas);
    color: var(--color-body);
    font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

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

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

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

h1 { font-size: 72px; letter-spacing: -2.16px; line-height: 1.1; }
h2 { font-size: 36px; letter-spacing: -0.72px; }
h3 { font-size: 26px; letter-spacing: -0.325px; line-height: 1.25; }
h4 { font-size: 22px; letter-spacing: -0.11px; line-height: 1.3; }

p { color: var(--color-body); font-size: 16px; line-height: 1.5; }

/* TOP NAV */
.site-nav {
    background-color: var(--color-canvas);
    height: 64px;
    border-bottom: 1px solid var(--color-hairline);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.nav-logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-ink);
    letter-spacing: -0.5px;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink);
    line-height: 1.4;
    transition: color 0.15s ease;
}

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

.nav-hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    flex-direction: column;
    gap: 5px;
}

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

/* HERO */
.hero-band {
    padding: var(--spacing-section) 0;
    background-color: var(--color-canvas);
}

.hero-band .hero-inner {
    max-width: 760px;
}

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

.hero-band h1 {
    margin-bottom: var(--spacing-lg);
    color: var(--color-ink);
}

.hero-band .hero-sub {
    font-size: 18px;
    color: var(--color-body);
    line-height: 1.5;
    max-width: 560px;
    margin-bottom: var(--spacing-xxl);
}

/* SECTION BANDS */
.section-band {
    padding: var(--spacing-section) 0;
    border-top: 1px solid var(--color-hairline);
}

.section-band.band-alt {
    background-color: var(--color-canvas-soft);
}

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

.section-head {
    margin-bottom: var(--spacing-xxl);
}

.section-head h2 {
    margin-bottom: var(--spacing-base);
}

.section-head p {
    max-width: 560px;
    font-size: 16px;
    color: var(--color-body);
}

/* CARDS GRID */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.cards-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
}

.feature-card h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.feature-card p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
}

.feature-card .card-icon {
    width: 40px;
    height: 40px;
    background: var(--color-surface-strong);
    border-radius: var(--rounded-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-base);
    font-size: 20px;
}

/* ARTICLE CARDS */
.article-card {
    background: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    overflow: hidden;
    transition: border-color 0.15s ease;
}

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

.article-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-color: var(--color-surface-strong);
}

.article-card-body {
    padding: var(--spacing-lg);
}

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

.article-card-body h3 {
    font-size: 22px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.article-card-body p {
    font-size: 14px;
    color: var(--color-body);
    margin-bottom: var(--spacing-base);
}

.article-card-meta {
    font-size: 13px;
    color: var(--color-muted);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* INLINE TEXT LINK */
.text-link {
    color: var(--color-primary);
    font-weight: 500;
    text-decoration: none;
}
.text-link:hover { color: var(--color-primary-active); text-decoration: underline; }

/* ARTICLE PAGE */
.article-header {
    padding: var(--spacing-section) 0 var(--spacing-xxl);
    border-bottom: 1px solid var(--color-hairline);
}

.article-header .article-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.article-header h1 {
    font-size: 48px;
    letter-spacing: -1.5px;
    color: var(--color-ink);
    max-width: 820px;
    margin-bottom: var(--spacing-base);
}

.article-header .article-lead {
    font-size: 18px;
    color: var(--color-body);
    max-width: 640px;
    line-height: 1.6;
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: var(--spacing-section);
    padding: var(--spacing-section) 0;
    align-items: start;
}

.article-content h2 {
    font-size: 28px;
    letter-spacing: -0.5px;
    color: var(--color-ink);
    margin: var(--spacing-xxl) 0 var(--spacing-base);
}

.article-content h3 {
    font-size: 22px;
    letter-spacing: -0.25px;
    color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-sm);
}

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

.article-content ul, .article-content ol {
    margin: var(--spacing-base) 0 var(--spacing-base) var(--spacing-xl);
    color: var(--color-body);
    font-size: 16px;
    line-height: 1.7;
}

.article-content li { margin-bottom: var(--spacing-xs); }

.article-content img {
    width: 100%;
    border-radius: var(--rounded-lg);
    margin: var(--spacing-xl) 0;
    border: 1px solid var(--color-hairline);
}

.article-content .info-box {
    background: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-left: 3px solid var(--color-primary);
    border-radius: var(--rounded-md);
    padding: var(--spacing-base) var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.6;
}

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

.sidebar-box {
    background: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-base);
}

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

.sidebar-box ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.sidebar-box ul a {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.4;
}

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

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

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-xxl);
}

.footer-brand .nav-logo {
    font-size: 18px;
    margin-bottom: var(--spacing-base);
    display: block;
}

.footer-brand p {
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.5;
    max-width: 240px;
}

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

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-col ul a {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
}

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

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

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

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

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

/* CONTACT FORM */
.contact-section {
    padding: var(--spacing-section) 0;
}

.contact-form-wrap {
    max-width: 560px;
}

.form-group {
    margin-bottom: var(--spacing-base);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    background: var(--color-surface-card);
    color: var(--color-ink);
    border: 1px solid var(--color-hairline-strong);
    border-radius: var(--rounded-md);
    padding: 12px 16px;
    height: 44px;
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s ease;
}

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

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

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

.form-error {
    font-size: 12px;
    color: var(--color-semantic-error);
    margin-top: 4px;
    display: none;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-on-primary);
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    padding: 10px 18px;
    height: 40px;
    border: none;
    border-radius: var(--rounded-md);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: background 0.15s ease;
}

.btn-primary:hover { background: var(--color-primary-active); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

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

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

.form-success {
    background: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-left: 3px solid var(--color-semantic-success);
    border-radius: var(--rounded-md);
    padding: var(--spacing-base) var(--spacing-lg);
    font-size: 14px;
    color: var(--color-semantic-success);
    display: none;
    margin-top: var(--spacing-base);
}

/* PAGES */
.page-header {
    padding: var(--spacing-section) 0 var(--spacing-xxl);
    border-bottom: 1px solid var(--color-hairline);
}

.page-header h1 {
    font-size: 48px;
    letter-spacing: -1.5px;
    margin-bottom: var(--spacing-base);
}

.page-header p {
    font-size: 18px;
    color: var(--color-body);
    max-width: 560px;
}

.page-content {
    padding: var(--spacing-section) 0;
    max-width: 720px;
}

.page-content h2 {
    font-size: 26px;
    letter-spacing: -0.325px;
    color: var(--color-ink);
    margin: var(--spacing-xxl) 0 var(--spacing-base);
}

.page-content h2:first-child { margin-top: 0; }

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

.page-content ul, .page-content ol {
    margin: var(--spacing-base) 0 var(--spacing-base) var(--spacing-xl);
    color: var(--color-body);
    font-size: 16px;
    line-height: 1.7;
}

.page-content li { margin-bottom: var(--spacing-xs); }

.page-updated {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: var(--spacing-section);
    padding-top: var(--spacing-base);
    border-top: 1px solid var(--color-hairline);
}

/* COOKIE BANNER */
#cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-ink);
    color: var(--color-canvas);
    padding: var(--spacing-base) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    z-index: 999;
    border-top: 1px solid rgba(255,255,255,0.1);
}

#cookie-banner p {
    font-size: 14px;
    color: var(--color-canvas);
    line-height: 1.5;
    flex: 1;
}

#cookie-banner a {
    color: var(--color-primary);
}

#cookie-banner a:hover { text-decoration: underline; }

.cookie-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.cookie-accept {
    background: var(--color-primary);
    color: var(--color-on-primary);
    font-size: 13px;
    font-weight: 500;
    font-family: inherit;
    padding: 8px 16px;
    border: none;
    border-radius: var(--rounded-md);
    cursor: pointer;
}

.cookie-accept:hover { background: var(--color-primary-active); }

.cookie-reject {
    background: transparent;
    color: var(--color-canvas);
    font-size: 13px;
    font-weight: 500;
    font-family: inherit;
    padding: 8px 16px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--rounded-md);
    cursor: pointer;
}

.cookie-reject:hover { border-color: rgba(255,255,255,0.6); }

/* BREADCRUMB */
.breadcrumb {
    padding: var(--spacing-base) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 13px;
    color: var(--color-muted);
    border-bottom: 1px solid var(--color-hairline);
}

.breadcrumb a { color: var(--color-body); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb span { color: var(--color-muted); }

/* DIVIDER */
hr {
    border: none;
    border-top: 1px solid var(--color-hairline);
    margin: var(--spacing-xl) 0;
}

/* ABOUT GRID */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-section);
    align-items: center;
    padding: var(--spacing-section) 0;
}

.about-grid img {
    border-radius: var(--rounded-lg);
    border: 1px solid var(--color-hairline);
    width: 100%;
    height: 340px;
    object-fit: cover;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    h1 { font-size: 56px; letter-spacing: -1.5px; }
    .cards-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { display: none; }
}

@media (max-width: 768px) {
    .container { padding: 0 var(--spacing-base); }
    h1 { font-size: 36px; letter-spacing: -1px; }
    h2 { font-size: 28px; letter-spacing: -0.5px; }
    .hero-band { padding: var(--spacing-xxl) 0; }
    .section-band { padding: var(--spacing-xxl) 0; }
    .cards-grid { grid-template-columns: 1fr; }
    .cards-grid-2 { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; gap: var(--spacing-xl); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-xl); }
    .footer-bottom { flex-direction: column; gap: var(--spacing-sm); text-align: center; }
    .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--color-canvas); border-bottom: 1px solid var(--color-hairline); padding: var(--spacing-base) var(--spacing-xl); gap: var(--spacing-base); }
    .nav-links.open { display: flex; }
    .nav-hamburger { display: flex; }
    #cookie-banner { flex-direction: column; align-items: flex-start; gap: var(--spacing-base); }
    .article-header h1 { font-size: 32px; letter-spacing: -0.75px; }
    .page-header h1 { font-size: 32px; letter-spacing: -0.75px; }
}

@media (max-width: 640px) {
    .footer-grid { grid-template-columns: 1fr; }
}