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

*, *::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;
    --ink: #26251e;
    --body: #5a5852;
    --body-strong: #26251e;
    --muted: #807d72;
    --muted-soft: #a09c92;
    --on-primary: #ffffff;
    --hairline: #e6e5e0;
    --hairline-soft: #efeee8;
    --hairline-strong: #cfcdc4;
    --success: #1f8a65;
    --error: #cf2d56;
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-pill: 9999px;
}

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

body {
    background-color: var(--canvas);
    color: var(--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;
}

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; }

/* NAV */
.site-nav {
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    height: 64px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.site-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.nav-logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
}
.nav-logo 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);
    line-height: 1.4;
    transition: color 0.15s;
}
.nav-links a:hover { 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: var(--ink);
    border-radius: 2px;
    transition: all 0.2s;
}

/* HERO */
.hero {
    padding: 80px 0;
    border-bottom: 1px solid var(--hairline);
}
.hero-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    background: var(--surface-strong);
    border-radius: var(--radius-pill);
    padding: 4px 10px;
    margin-bottom: 24px;
}
.hero h1 {
    font-size: 56px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.5px;
    color: var(--ink);
    max-width: 780px;
    margin-bottom: 20px;
}
.hero-sub {
    font-size: 16px;
    color: var(--body);
    max-width: 540px;
    line-height: 1.5;
    margin-bottom: 40px;
}
.hero-img {
    margin-top: 48px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--hairline);
    overflow: hidden;
    max-height: 460px;
    width: 100%;
    object-fit: cover;
}

/* SECTIONS */
.section { padding: 80px 0; }
.section-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 12px;
}
.section-title {
    font-size: 36px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.72px;
    color: var(--ink);
    margin-bottom: 16px;
}
.section-intro {
    font-size: 16px;
    color: var(--body);
    max-width: 600px;
    line-height: 1.5;
    margin-bottom: 48px;
}
.section-divider {
    border: none;
    border-top: 1px solid var(--hairline);
}

/* CARDS */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.card-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}
.card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.card-img {
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 4px;
}
.card-img img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.card-tag {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    background: var(--surface-strong);
    border-radius: var(--radius-pill);
    padding: 4px 10px;
    display: inline-block;
    width: fit-content;
}
.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.4;
}
.card-title a { color: var(--ink); }
.card-title a:hover { color: var(--primary); }
.card-excerpt {
    font-size: 14px;
    color: var(--body);
    line-height: 1.5;
    flex: 1;
}
.card-meta {
    font-size: 13px;
    color: var(--muted);
    padding-top: 8px;
    border-top: 1px solid var(--hairline-soft);
}
.card-read-more {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    text-decoration: none;
    border-bottom: 1px solid var(--hairline-strong);
    padding-bottom: 1px;
    width: fit-content;
    transition: color 0.15s, border-color 0.15s;
}
.card-read-more:hover { color: var(--primary); border-color: var(--primary); }

/* ARTICLE PAGE */
.article-header { padding: 60px 0 40px; border-bottom: 1px solid var(--hairline); }
.article-header .section-label { margin-bottom: 16px; }
.article-title {
    font-size: 46px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1px;
    color: var(--ink);
    max-width: 820px;
    margin-bottom: 20px;
}
.article-meta {
    font-size: 14px;
    color: var(--muted);
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.article-body { padding: 48px 0 80px; }
.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 48px;
    align-items: start;
}
.article-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin: 40px 0 16px;
}
.article-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 12px;
}
.article-content p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 16px;
}
.article-content ul, .article-content ol {
    padding-left: 24px;
    margin-bottom: 20px;
}
.article-content li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 8px;
}
.article-content a { color: var(--ink); border-bottom: 1px solid var(--hairline-strong); }
.article-content a:hover { color: var(--primary); border-color: var(--primary); }
.article-content .article-img {
    border-radius: var(--radius-lg);
    border: 1px solid var(--hairline);
    overflow: hidden;
    margin: 32px 0;
}
.article-content .article-img img {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
}
.article-content .article-img figcaption {
    font-size: 13px;
    color: var(--muted);
    padding: 10px 16px;
    background: var(--canvas-soft);
    border-top: 1px solid var(--hairline-soft);
}
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: sticky;
    top: 80px;
}
.sidebar-box {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 20px;
}
.sidebar-box h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--hairline-soft);
}
.sidebar-box ul { list-style: none; padding: 0; }
.sidebar-box li { margin-bottom: 10px; }
.sidebar-box a {
    font-size: 14px;
    color: var(--body);
    line-height: 1.4;
}
.sidebar-box a:hover { color: var(--primary); }
.info-box {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin: 28px 0;
}
.info-box h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
}
.info-box p, .info-box li {
    font-size: 15px;
    color: var(--body);
    line-height: 1.5;
}
.ref-link {
    font-size: 13px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--muted);
}

/* BREADCRUMB */
.breadcrumb {
    font-size: 13px;
    color: var(--muted);
    padding: 16px 0;
    display: flex;
    gap: 8px;
    align-items: center;
    border-bottom: 1px solid var(--hairline-soft);
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb-sep { color: var(--hairline-strong); }

/* FORM */
.contact-section { padding: 80px 0; border-top: 1px solid var(--hairline); }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
}
.form-group input,
.form-group textarea {
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    font-size: 16px;
    font-family: inherit;
    color: var(--ink);
    width: 100%;
    height: 44px;
    transition: border-color 0.15s;
    outline: none;
}
.form-group textarea { height: 120px; resize: vertical; }
.form-group input:focus,
.form-group textarea:focus { border-color: var(--ink); }
.form-group input.error,
.form-group textarea.error { border-color: var(--error); }
.field-error { font-size: 13px; color: var(--error); display: none; }
.field-error.visible { display: block; }
.btn-primary {
    background: var(--primary);
    color: var(--on-primary);
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    padding: 10px 18px;
    height: 40px;
    cursor: pointer;
    transition: background 0.15s;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-primary:hover { background: var(--primary-active); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }
.form-message {
    display: none;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    font-size: 15px;
    margin-top: 16px;
}
.form-message.success {
    display: block;
    background: #f0faf6;
    border: 1px solid #a3d9c3;
    color: var(--success);
}

/* FOOTER */
.site-footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 64px 0 48px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--hairline);
}
.footer-brand p {
    font-size: 14px;
    color: var(--body);
    line-height: 1.6;
    margin-top: 12px;
    max-width: 280px;
}
.footer-col h5 {
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 16px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 14px; color: var(--body); line-height: 1.4; }
.footer-col a:hover { color: var(--ink); }
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-copyright { font-size: 14px; color: var(--muted); }
.footer-legal { display: flex; gap: 24px; }
.footer-legal a { font-size: 14px; color: var(--muted); }
.footer-legal a:hover { color: var(--ink); }

/* COOKIE BANNER */
#cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--ink);
    color: var(--canvas);
    border-radius: var(--radius-lg);
    padding: 20px 28px;
    display: flex;
    align-items: center;
    gap: 24px;
    max-width: 680px;
    width: calc(100% - 48px);
    z-index: 999;
    box-shadow: 0 4px 24px rgba(38,37,30,0.18);
}
#cookie-banner p { font-size: 14px; color: var(--canvas-soft); line-height: 1.5; flex: 1; }
#cookie-banner a { color: var(--canvas); border-bottom: 1px solid rgba(247,247,244,0.4); }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.btn-cookie-accept {
    background: var(--primary);
    color: var(--on-primary);
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    padding: 8px 16px;
    cursor: pointer;
    font-family: inherit;
    white-space: nowrap;
}
.btn-cookie-reject {
    background: transparent;
    color: var(--canvas-soft);
    font-size: 14px;
    font-weight: 500;
    border: 1px solid rgba(247,247,244,0.3);
    border-radius: var(--radius-md);
    padding: 8px 16px;
    cursor: pointer;
    font-family: inherit;
    white-space: nowrap;
}
.btn-cookie-accept:hover { background: var(--primary-active); }
.btn-cookie-reject:hover { border-color: rgba(247,247,244,0.6); }

/* PAGE HEADER (about, privacy, terms) */
.page-header {
    padding: 60px 0 40px;
    border-bottom: 1px solid var(--hairline);
}
.page-title {
    font-size: 46px;
    font-weight: 400;
    letter-spacing: -1px;
    color: var(--ink);
    margin-bottom: 16px;
}
.page-intro {
    font-size: 16px;
    color: var(--body);
    max-width: 560px;
    line-height: 1.5;
}
.page-content { padding: 48px 0 80px; max-width: 760px; }
.page-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin: 40px 0 14px;
}
.page-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 10px;
}
.page-content p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 16px;
}
.page-content ul, .page-content ol {
    padding-left: 24px;
    margin-bottom: 20px;
}
.page-content li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 8px;
}
.page-updated {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 40px;
}

/* ABOUT */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    padding: 80px 0;
    border-bottom: 1px solid var(--hairline);
}
.about-grid img {
    border-radius: var(--radius-lg);
    border: 1px solid var(--hairline);
    width: 100%;
    height: 340px;
    object-fit: cover;
}
.about-text h2 {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    margin-bottom: 16px;
}
.about-text p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 16px;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero h1 { font-size: 44px; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
    .card-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .about-grid { grid-template-columns: 1fr; }
    .about-grid img { height: 260px; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--canvas);
        border-bottom: 1px solid var(--hairline);
        padding: 16px 24px 24px;
        gap: 16px;
        z-index: 99;
    }
    .nav-hamburger { display: flex; }
    .site-nav .container { position: relative; }
    .hero h1 { font-size: 34px; letter-spacing: -0.7px; }
    .section-title { font-size: 28px; }
    .article-title { font-size: 30px; }
    .page-title { font-size: 30px; }
    .card-grid { grid-template-columns: 1fr; }
    .card-grid-2 { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
    #cookie-banner { flex-direction: column; align-items: flex-start; bottom: 16px; }
    .about-grid { padding: 48px 0; }
}

@media (max-width: 480px) {
    .hero { padding: 48px 0; }
    .section { padding: 48px 0; }
    .hero h1 { font-size: 28px; }
    .article-title { font-size: 26px; }
}