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

:root {
    --canvas: #f7f7f4;
    --canvas-soft: #fafaf7;
    --surface-card: #ffffff;
    --surface-strong: #e6e5e0;
    --primary: #f54e00;
    --primary-active: #d04200;
    --hairline: #e6e5e0;
    --hairline-soft: #efeee8;
    --hairline-strong: #cfcdc4;
    --ink: #26251e;
    --body: #5a5852;
    --body-strong: #26251e;
    --muted: #807d72;
    --muted-soft: #a09c92;
    --on-primary: #ffffff;
    --success: #1f8a65;
    --error: #cf2d56;
    --font-sans: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --rounded-xs: 4px;
    --rounded-sm: 6px;
    --rounded-md: 8px;
    --rounded-lg: 12px;
    --rounded-xl: 16px;
    --rounded-pill: 9999px;
}

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

body {
    background-color: var(--canvas);
    color: var(--body);
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

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

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

/* NAV */
.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;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 32px;
}

.nav-logo { display: flex; align-items: center; text-decoration: none; }
.nav-logo-text {
    font-family: var(--font-sans);
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
}
.nav-logo-accent { color: var(--primary); }

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}

.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--body);
    padding: 6px 12px;
    border-radius: var(--rounded-sm);
    transition: color 0.15s, background 0.15s;
    line-height: 1.4;
}
.nav-link:hover { color: var(--ink); background: var(--surface-strong); }
.nav-link--active { color: var(--ink); }

.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform 0.2s;
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    line-height: 1;
    border-radius: var(--rounded-md);
    border: none;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    text-decoration: none;
    white-space: nowrap;
}
.btn--primary {
    background: var(--primary);
    color: var(--on-primary);
    padding: 10px 18px;
    height: 40px;
}
.btn--primary:hover { background: var(--primary-active); color: var(--on-primary); }
.btn--secondary {
    background: var(--surface-card);
    color: var(--ink);
    padding: 10px 18px;
    height: 40px;
    border: 1px solid var(--hairline-strong);
}
.btn--secondary:hover { background: var(--surface-strong); }

/* HERO */
.hero {
    padding: 80px 0 64px;
    background: var(--canvas);
}
.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    background: var(--surface-strong);
    color: var(--ink);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    border-radius: var(--rounded-pill);
    padding: 4px 10px;
    margin-bottom: 20px;
}
.hero h1 {
    font-size: 56px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.5px;
    color: var(--ink);
    max-width: 720px;
    margin-bottom: 20px;
}
.hero-sub {
    font-size: 18px;
    color: var(--body);
    max-width: 560px;
    line-height: 1.55;
    margin-bottom: 36px;
}
.hero-image {
    margin-top: 48px;
    border-radius: var(--rounded-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    max-height: 480px;
}
.hero-image img {
    width: 100%;
    height: 480px;
    object-fit: cover;
}

/* SECTION */
.section { padding: 80px 0; }
.section--alt { background: var(--canvas-soft); }
.section-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 12px;
    display: block;
}
.section-title {
    font-size: 36px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.72px;
    color: var(--ink);
    margin-bottom: 16px;
}
.section-sub {
    font-size: 16px;
    color: var(--body);
    max-width: 600px;
    line-height: 1.5;
    margin-bottom: 48px;
}

/* CARDS */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.card-img {
    border-radius: var(--rounded-md);
    overflow: hidden;
    margin-bottom: 8px;
}
.card-img img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.card-tag {
    display: inline-flex;
    align-items: center;
    background: var(--surface-strong);
    color: var(--muted);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    border-radius: var(--rounded-pill);
    padding: 4px 10px;
    width: fit-content;
}
.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.3;
}
.card-body {
    font-size: 14px;
    color: var(--body);
    line-height: 1.5;
    flex: 1;
}
.card-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    margin-top: auto;
}
.card-link:hover { color: var(--primary-active); }
.card-date { font-size: 13px; color: var(--muted); }

/* ARTICLE CARD */
.article-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.article-card-img img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}
.article-card-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}
.article-card-body .card-title { font-size: 20px; }

/* FEATURES GRID */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.feature-item {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 24px;
}
.feature-icon {
    font-size: 24px;
    margin-bottom: 12px;
    display: block;
}
.feature-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
}
.feature-text { font-size: 14px; color: var(--body); line-height: 1.5; }

/* CONTACT FORM */
.contact-section { padding: 80px 0; background: var(--canvas); }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}
.contact-info h2 {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    margin-bottom: 16px;
    line-height: 1.2;
}
.contact-info p { font-size: 16px; color: var(--body); line-height: 1.5; margin-bottom: 24px; }
.contact-detail { font-size: 14px; color: var(--body); margin-bottom: 8px; }
.contact-detail strong { color: var(--ink); }

.form-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 32px;
}
.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: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--rounded-md);
    padding: 12px 16px;
    font-family: var(--font-sans);
    font-size: 16px;
    color: var(--ink);
    transition: border-color 0.15s;
    outline: none;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--ink); }
.form-group textarea { height: 120px; resize: vertical; }
.form-submit-btn {
    width: 100%;
    height: 44px;
    font-size: 15px;
}
.form-msg {
    display: none;
    padding: 12px 16px;
    border-radius: var(--rounded-md);
    font-size: 14px;
    margin-top: 16px;
    text-align: center;
}
.form-msg--success { background: #e8f5f0; color: var(--success); border: 1px solid #b3dfd0; }
.form-spinner {
    display: none;
    text-align: center;
    padding: 12px 0;
    color: var(--muted);
    font-size: 14px;
}

/* ARTICLE PAGE */
.article-hero {
    padding: 56px 0 0;
    background: var(--canvas);
}
.article-header { max-width: 780px; }
.article-header .article-tag {
    display: inline-flex;
    align-items: center;
    background: var(--surface-strong);
    color: var(--muted);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    border-radius: var(--rounded-pill);
    padding: 4px 10px;
    margin-bottom: 16px;
}
.article-header h1 {
    font-size: 42px;
    font-weight: 400;
    letter-spacing: -1px;
    color: var(--ink);
    line-height: 1.15;
    margin-bottom: 16px;
}
.article-header .article-sub {
    font-size: 18px;
    color: var(--body);
    line-height: 1.55;
    margin-bottom: 24px;
    max-width: 640px;
}
.article-meta {
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 40px;
    flex-wrap: wrap;
}
.article-cover {
    border-radius: var(--rounded-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    margin-bottom: 48px;
}
.article-cover img {
    width: 100%;
    height: 420px;
    object-fit: cover;
}
.article-body { max-width: 780px; padding-bottom: 80px; }
.article-body h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin: 40px 0 14px;
    line-height: 1.25;
}
.article-body h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 10px;
    line-height: 1.3;
}
.article-body p { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 20px; }
.article-body ul, .article-body ol { padding-left: 22px; margin-bottom: 20px; }
.article-body li { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 8px; }
.article-body strong { color: var(--ink); font-weight: 600; }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--primary-active); }

.callout {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--primary);
    border-radius: var(--rounded-md);
    padding: 18px 20px;
    margin: 28px 0;
    font-size: 15px;
    color: var(--body);
    line-height: 1.55;
}

.data-table { width: 100%; border-collapse: collapse; margin: 28px 0; font-size: 14px; }
.data-table th {
    background: var(--surface-strong);
    color: var(--ink);
    font-weight: 600;
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--hairline);
}
.data-table td {
    padding: 10px 14px;
    color: var(--body);
    border-bottom: 1px solid var(--hairline-soft);
    vertical-align: top;
}
.data-table tr:last-child td { border-bottom: none; }

.article-image-block { margin: 32px 0; }
.article-image-block img {
    width: 100%;
    border-radius: var(--rounded-lg);
    border: 1px solid var(--hairline);
    object-fit: cover;
    max-height: 380px;
}
.article-image-caption { font-size: 13px; color: var(--muted); margin-top: 8px; line-height: 1.4; }

.related-section {
    padding: 64px 0 80px;
    border-top: 1px solid var(--hairline);
}
.related-title {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin-bottom: 32px;
}
.related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }

/* ARTICLES INDEX */
.articles-hero { padding: 56px 0 48px; }
.articles-hero h1 {
    font-size: 48px;
    font-weight: 400;
    letter-spacing: -1px;
    color: var(--ink);
    margin-bottom: 14px;
    line-height: 1.15;
}
.articles-hero p { font-size: 18px; color: var(--body); max-width: 560px; line-height: 1.5; }
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding-bottom: 80px;
}

/* PAGE (about, privacy, terms) */
.page-hero { padding: 56px 0 40px; border-bottom: 1px solid var(--hairline); margin-bottom: 56px; }
.page-hero h1 {
    font-size: 42px;
    font-weight: 400;
    letter-spacing: -1px;
    color: var(--ink);
    margin-bottom: 12px;
    line-height: 1.15;
}
.page-hero .page-sub { font-size: 17px; color: var(--body); line-height: 1.5; max-width: 560px; }
.page-body { max-width: 780px; padding-bottom: 80px; }
.page-body h2 { font-size: 26px; font-weight: 400; letter-spacing: -0.325px; color: var(--ink); margin: 40px 0 14px; line-height: 1.25; }
.page-body h3 { font-size: 18px; font-weight: 600; color: var(--ink); margin: 24px 0 10px; }
.page-body p { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 18px; }
.page-body ul, .page-body ol { padding-left: 22px; margin-bottom: 18px; }
.page-body li { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 6px; }
.page-body a { color: var(--primary); }
.page-meta { font-size: 13px; color: var(--muted); margin-bottom: 40px; }

/* FOOTER */
.site-footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 64px 0 0;
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px 48px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
}
.footer-logo { font-size: 17px; font-weight: 600; color: var(--ink); display: block; margin-bottom: 12px; }
.footer-logo-accent { color: var(--primary); }
.footer-tagline { font-size: 14px; color: var(--body); line-height: 1.5; max-width: 280px; }
.footer-col-title { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 14px; color: var(--body); }
.footer-col a:hover { color: var(--ink); }
.footer-bottom {
    border-top: 1px solid var(--hairline);
    padding: 20px 24px;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.footer-bottom p { font-size: 13px; color: var(--muted); }
.footer-disclaimer { font-size: 12px; color: var(--muted-soft); }

/* COOKIE BANNER */
.cookie-banner {
    display: none;
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--ink);
    color: var(--canvas);
    border-radius: var(--rounded-lg);
    padding: 16px 24px;
    z-index: 200;
    max-width: 560px;
    width: calc(100% - 48px);
    box-shadow: 0 4px 24px rgba(38,37,30,0.18);
}
.cookie-banner-inner {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}
.cookie-banner p { font-size: 14px; color: var(--canvas-soft); line-height: 1.45; flex: 1; min-width: 200px; }
.cookie-banner a { color: var(--on-primary); text-decoration: underline; }
.cookie-buttons { display: flex; gap: 10px; flex-shrink: 0; }
.cookie-banner .btn--primary { height: 36px; font-size: 13px; }
.cookie-banner .btn--secondary {
    height: 36px;
    font-size: 13px;
    background: transparent;
    color: var(--canvas-soft);
    border-color: rgba(255,255,255,0.3);
}
.cookie-banner .btn--secondary:hover { background: rgba(255,255,255,0.1); }

/* ABOUT */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; margin-bottom: 80px; }
.about-img { border-radius: var(--rounded-lg); overflow: hidden; border: 1px solid var(--hairline); }
.about-img img { width: 100%; height: 380px; object-fit: cover; }
.about-text h2 { font-size: 32px; font-weight: 400; letter-spacing: -0.6px; color: var(--ink); margin-bottom: 16px; line-height: 1.2; }
.about-text p { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 16px; }

/* BREADCRUMB */
.breadcrumb {
    display: flex;
    gap: 8px;
    align-items: center;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--body); }
.breadcrumb-sep { color: var(--muted-soft); }

/* DIVIDER */
.divider { border: none; border-top: 1px solid var(--hairline); margin: 0; }

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero h1 { font-size: 44px; }
    .card-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
    .about-grid { grid-template-columns: 1fr; }
    .about-img { order: -1; }
    .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-hamburger { display: flex; }
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--canvas);
        border-bottom: 1px solid var(--hairline);
        flex-direction: column;
        padding: 16px 24px;
        gap: 4px;
    }
    .nav-links.nav-links--open { display: flex; }
    .nav-inner { position: relative; }
    .hero h1 { font-size: 34px; letter-spacing: -0.8px; }
    .hero-image img { height: 260px; }
    .section-title { font-size: 28px; }
    .card-grid { grid-template-columns: 1fr; }
    .card-grid--2 { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .articles-grid { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: 24px; }
    .article-header h1 { font-size: 30px; }
    .article-cover img { height: 260px; }
    .page-hero h1 { font-size: 30px; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero { padding: 48px 0 40px; }
    .hero h1 { font-size: 28px; }
    .section { padding: 56px 0; }
}