@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;
    --semantic-success: #1f8a65;
    --semantic-error: #cf2d56;
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-pill: 9999px;
}

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;
    -webkit-font-smoothing: antialiased;
}

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

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.02em;
    text-decoration: none;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}

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

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

.nav-hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    flex-direction: column;
    gap: 5px;
}

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

.nav-mobile {
    display: none;
    flex-direction: column;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: 16px 24px 20px;
    gap: 16px;
}

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

.nav-mobile a {
    font-size: 15px;
    font-weight: 500;
    color: var(--body);
    padding: 4px 0;
}

.nav-mobile a:hover { color: var(--ink); }

/* ---- HERO ---- */
.hero {
    padding: 80px 0 72px;
    border-bottom: 1px solid var(--hairline-soft);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.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);
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 42px;
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.72px;
    color: var(--ink);
    margin-bottom: 20px;
}

.hero-sub {
    font-size: 17px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 32px;
    max-width: 440px;
}

.hero-meta {
    font-size: 13px;
    color: var(--muted);
}

.hero-img {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    aspect-ratio: 4/3;
}

.hero-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ---- SECTIONS ---- */
.section { padding: 80px 0; }
.section-alt { background: var(--canvas-soft); }
.section-border { border-top: 1px solid var(--hairline-soft); }

.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: 32px;
    font-weight: 400;
    letter-spacing: -0.5px;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: 16px;
}

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

.section-head {
    margin-bottom: 48px;
}

/* ---- CARDS ---- */
.card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.card-img {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.card:hover .card-img img { transform: scale(1.03); }

.card-body { padding: 24px; }

.card-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    background: var(--surface-strong);
    padding: 3px 8px;
    border-radius: var(--radius-pill);
    margin-bottom: 12px;
}

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

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

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

.card-meta {
    font-size: 13px;
    color: var(--muted);
    border-top: 1px solid var(--hairline-soft);
    padding-top: 14px;
}

/* ---- ARTICLES GRID ---- */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.articles-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

/* ---- INFO BANDS ---- */
.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.info-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.info-card-num {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 10px;
}

.info-card-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
    line-height: 1.3;
}

.info-card-text {
    font-size: 14px;
    color: var(--body);
    line-height: 1.6;
}

/* ---- ARTICLE PAGE ---- */
.article-hero {
    padding: 64px 0 0;
    border-bottom: 1px solid var(--hairline-soft);
}

.article-hero-inner {
    max-width: 780px;
}

.article-meta-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

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

.article-date {
    font-size: 13px;
    color: var(--muted);
}

.article-h1 {
    font-size: 40px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    line-height: 1.15;
    margin-bottom: 20px;
}

.article-lead {
    font-size: 18px;
    color: var(--body);
    line-height: 1.65;
    margin-bottom: 32px;
    max-width: 660px;
}

.article-img-full {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    overflow: hidden;
    border: 1px solid var(--hairline);
    border-bottom: none;
    aspect-ratio: 21/9;
}

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

.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 64px;
    padding: 64px 0 80px;
    align-items: start;
}

.article-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.3px;
    color: var(--ink);
    line-height: 1.25;
    margin: 40px 0 14px;
}

.article-content h3 {
    font-size: 19px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.3;
    margin: 28px 0 10px;
}

.article-content p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 18px;
}

.article-content ul, .article-content ol {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 18px;
    padding-left: 20px;
}

.article-content li { margin-bottom: 6px; }

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

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

.info-box {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    margin: 28px 0;
}

.info-box-title {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 10px;
}

.info-box ul {
    margin: 0;
    padding-left: 18px;
}

.info-box li {
    font-size: 14px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 5px;
}

.article-sidebar { position: sticky; top: 84px; }

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

.sidebar-title {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 14px;
}

.sidebar-toc {
    list-style: none;
    padding: 0;
}

.sidebar-toc li {
    border-bottom: 1px solid var(--hairline-soft);
    padding: 8px 0;
    font-size: 14px;
}

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

.sidebar-toc a {
    color: var(--body);
    font-size: 13px;
}

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

.sidebar-related li {
    border-bottom: 1px solid var(--hairline-soft);
    padding: 8px 0;
}

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

.sidebar-related a {
    font-size: 13px;
    color: var(--body);
    line-height: 1.4;
}

.sidebar-related a:hover { color: var(--ink); }

/* ---- FORM ---- */
.contact-form-wrap {
    max-width: 640px;
}

.form-group {
    margin-bottom: 20px;
}

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

.form-input, .form-textarea {
    width: 100%;
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    font-family: inherit;
    font-size: 15px;
    color: var(--ink);
    line-height: 1.5;
    transition: border-color 0.15s;
    appearance: none;
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--ink);
}

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

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

.form-btn {
    display: inline-flex;
    align-items: center;
    background: var(--ink);
    color: var(--canvas);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    padding: 12px 22px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    height: 44px;
    transition: background 0.15s;
}

.form-btn:hover { background: var(--body-strong); }

.form-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-message {
    display: none;
    margin-top: 16px;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    border: 1px solid;
}

.form-message.success {
    background: #f0faf5;
    color: var(--semantic-success);
    border-color: #b3e5cf;
    display: block;
}

/* ---- ABOUT ---- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.about-img {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    aspect-ratio: 4/3;
}

.about-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ---- FOOTER ---- */
.site-footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 64px 0 40px;
}

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

.footer-brand-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 10px;
}

.footer-brand-desc {
    font-size: 14px;
    color: var(--body);
    line-height: 1.6;
    max-width: 260px;
}

.footer-col-title {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 14px;
}

.footer-links { list-style: none; }

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

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

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

.footer-bottom {
    border-top: 1px solid var(--hairline-soft);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

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

.footer-bottom-links {
    display: flex;
    gap: 20px;
    list-style: none;
}

.footer-bottom-links a {
    font-size: 13px;
    color: var(--muted);
    transition: color 0.15s;
}

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

/* ---- COOKIE BANNER ---- */
#cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 48px);
    max-width: 720px;
    background: var(--ink);
    color: var(--canvas);
    border-radius: var(--radius-lg);
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    z-index: 999;
    box-shadow: 0 4px 24px rgba(38,37,30,0.18);
}

#cookie-banner.hidden { display: none; }

.cookie-text {
    font-size: 14px;
    color: #ccc9bf;
    line-height: 1.5;
}

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

.cookie-actions {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
}

.cookie-btn {
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s;
}

.cookie-btn-accept {
    background: var(--canvas);
    color: var(--ink);
}

.cookie-btn-accept:hover { background: var(--surface-strong); }

.cookie-btn-reject {
    background: transparent;
    color: #ccc9bf;
    border: 1px solid #4a4940;
}

.cookie-btn-reject:hover { color: var(--canvas); border-color: #6a6960; }

/* ---- PAGE HEADER ---- */
.page-header {
    padding: 64px 0 48px;
    border-bottom: 1px solid var(--hairline-soft);
}

.page-h1 {
    font-size: 38px;
    font-weight: 400;
    letter-spacing: -0.6px;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: 14px;
}

.page-sub {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    max-width: 520px;
}

/* ---- PROSE (about/privacy/terms) ---- */
.prose h2 {
    font-size: 24px;
    font-weight: 400;
    letter-spacing: -0.3px;
    color: var(--ink);
    margin: 40px 0 12px;
}

.prose h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 8px;
}

.prose p {
    font-size: 15px;
    color: var(--body);
    line-height: 1.75;
    margin-bottom: 16px;
}

.prose ul, .prose ol {
    font-size: 15px;
    color: var(--body);
    line-height: 1.75;
    padding-left: 20px;
    margin-bottom: 16px;
}

.prose li { margin-bottom: 4px; }

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

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

.prose-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 64px;
    padding: 64px 0 80px;
    align-items: start;
}

.prose-toc {
    position: sticky;
    top: 84px;
}

.prose-toc-title {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 12px;
}

.prose-toc ul {
    list-style: none;
    padding: 0;
}

.prose-toc li {
    border-bottom: 1px solid var(--hairline-soft);
    padding: 7px 0;
}

.prose-toc li:last-child { border-bottom: none; }

.prose-toc a {
    font-size: 13px;
    color: var(--body);
}

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

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

/* ---- BREADCRUMB ---- */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb-sep { color: var(--hairline-strong); }

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
    .hero h1 { font-size: 34px; }
    .article-layout { grid-template-columns: 1fr; gap: 40px; }
    .article-sidebar { position: static; }
    .prose-layout { grid-template-columns: 1fr; gap: 32px; }
    .prose-toc { position: static; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }
    .hero-grid { grid-template-columns: 1fr; gap: 36px; }
    .hero { padding: 48px 0 40px; }
    .hero h1 { font-size: 28px; }
    .section { padding: 56px 0; }
    .section-title { font-size: 26px; }
    .articles-grid { grid-template-columns: 1fr; }
    .articles-grid-2 { grid-template-columns: 1fr; }
    .info-grid { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
    .article-h1 { font-size: 28px; }
    .article-img-full { aspect-ratio: 16/9; }
    .page-h1 { font-size: 28px; }
    #cookie-banner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
    .hero-img { display: none; }
}