@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;
}

html { scroll-behavior: smooth; }

body {
    background: 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;
}

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;
}

/* ---- TOP NAV ---- */
.top-nav {
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    height: 64px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.top-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.nav-logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.02em;
}
.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;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: all 0.2s;
}
.nav-mobile {
    display: none;
    background: 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: 15px; font-weight: 500; color: var(--ink); }

/* ---- HERO ---- */
.hero {
    padding: 80px 0;
    background: var(--canvas);
    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);
    padding: 4px 10px;
    border-radius: 9999px;
    margin-bottom: 24px;
}
.hero h1 {
    font-size: 72px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -2.16px;
    color: var(--ink);
    max-width: 820px;
    margin-bottom: 24px;
}
.hero-sub {
    font-size: 16px;
    color: var(--body);
    max-width: 560px;
    margin-bottom: 48px;
    line-height: 1.6;
}
.hero-image {
    border-radius: 12px;
    border: 1px solid var(--hairline);
    overflow: hidden;
    margin-top: 48px;
}
.hero-image img { width: 100%; height: 420px; object-fit: cover; }

/* ---- BUTTONS ---- */
.btn-primary {
    display: inline-block;
    background: var(--primary);
    color: var(--on-primary);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    height: 40px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    line-height: 1;
    transition: background 0.15s;
    display: inline-flex;
    align-items: center;
}
.btn-primary:hover { background: var(--primary-active); color: var(--on-primary); }
.btn-secondary {
    display: inline-flex;
    align-items: center;
    background: 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;
}
.btn-secondary:hover { border-color: var(--ink); color: var(--ink); }

/* ---- SECTIONS ---- */
.section { padding: 80px 0; }
.section-alt { background: var(--canvas-soft); }
.section-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}
.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: 560px;
    line-height: 1.6;
    margin-bottom: 48px;
}

/* ---- CARDS ---- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.card-grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 24px;
}
.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
    line-height: 1.4;
}
.card-body { font-size: 15px; color: var(--body); line-height: 1.6; }
.card-img {
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 20px;
    border: 1px solid var(--hairline);
}
.card-img img { width: 100%; height: 200px; object-fit: cover; }

/* ---- ARTICLE CARDS ---- */
.article-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.article-card-img { overflow: hidden; }
.article-card-img img { width: 100%; height: 220px; object-fit: cover; transition: transform 0.3s; }
.article-card:hover .article-card-img img { transform: scale(1.03); }
.article-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.article-card-meta {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 10px;
}
.article-card-title {
    font-size: 20px;
    font-weight: 400;
    letter-spacing: -0.11px;
    color: var(--ink);
    margin-bottom: 12px;
    line-height: 1.3;
}
.article-card-excerpt { font-size: 14px; color: var(--body); line-height: 1.6; flex: 1; }
.article-card-link {
    display: inline-block;
    margin-top: 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
}

/* ---- INFO BAND ---- */
.info-band {
    background: var(--ink);
    color: var(--canvas);
    padding: 80px 0;
}
.info-band .section-title { color: var(--canvas); }
.info-band .section-sub { color: var(--muted-soft); }
.info-band .card {
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.12);
}
.info-band .card-title { color: var(--canvas); }
.info-band .card-body { color: var(--muted-soft); }

/* ---- ARTICLE PAGE ---- */
.article-hero {
    padding: 60px 0 0;
    border-bottom: 1px solid var(--hairline);
}
.article-hero-img {
    margin-top: 40px;
    border-radius: 12px 12px 0 0;
    overflow: hidden;
    border: 1px solid var(--hairline);
    border-bottom: none;
}
.article-hero-img img { width: 100%; height: 460px; object-fit: cover; }

.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 48px;
    align-items: start;
    padding: 48px 0 80px;
}
.article-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin: 40px 0 16px;
    line-height: 1.25;
}
.article-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 12px;
    line-height: 1.35;
}
.article-content p { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 20px; }
.article-content ul, .article-content ol { padding-left: 24px; margin-bottom: 20px; }
.article-content li { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 6px; }
.article-content a { color: var(--primary); }
.article-content strong { color: var(--ink); font-weight: 600; }
.article-content blockquote {
    border-left: 3px solid var(--primary);
    padding: 16px 20px;
    background: var(--canvas-soft);
    border-radius: 0 8px 8px 0;
    margin: 24px 0;
}
.article-content blockquote p { margin: 0; font-style: italic; color: var(--muted); }

.article-sidebar { position: sticky; top: 80px; }
.sidebar-box {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}
.sidebar-box-title {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}
.sidebar-toc { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.sidebar-toc a { font-size: 14px; color: var(--body); line-height: 1.4; }
.sidebar-toc a:hover { color: var(--primary); }

/* ---- FORM ---- */
.contact-form {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    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);
    color: var(--ink);
    border: 1px solid var(--hairline-strong);
    border-radius: 8px;
    padding: 12px 16px;
    height: 44px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.15s;
}
.form-group textarea { height: 120px; resize: vertical; }
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--ink);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--muted-soft); }
.form-message {
    display: none;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    margin-top: 16px;
}
.form-message.success { background: #e8f5f0; color: var(--semantic-success); border: 1px solid #b8ddd1; }

/* ---- COOKIE BANNER ---- */
#cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--ink);
    color: var(--canvas);
    padding: 16px 24px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 24px;
    z-index: 999;
    max-width: 680px;
    width: calc(100% - 48px);
    box-shadow: 0 4px 24px rgba(0,0,0,0.18);
}
#cookie-banner p { font-size: 14px; color: var(--muted-soft); line-height: 1.5; flex: 1; }
#cookie-banner p a { color: var(--canvas); text-decoration: underline; }
.cookie-actions { display: flex; gap: 8px; flex-shrink: 0; }
.cookie-accept {
    background: var(--primary);
    color: var(--on-primary);
    font-size: 13px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
}
.cookie-reject {
    background: transparent;
    color: var(--canvas);
    font-size: 13px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    cursor: pointer;
}

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

/* ---- BREADCRUMB ---- */
.breadcrumb { display: flex; align-items: center; gap: 8px; margin-bottom: 24px; }
.breadcrumb a { font-size: 13px; color: var(--muted); }
.breadcrumb span { font-size: 13px; color: var(--muted-soft); }

/* ---- PAGE HEADER ---- */
.page-header { padding: 60px 0 48px; border-bottom: 1px solid var(--hairline); }
.page-header h1 {
    font-size: 48px;
    font-weight: 400;
    letter-spacing: -1.2px;
    color: var(--ink);
    margin-bottom: 16px;
    line-height: 1.15;
}
.page-header p { font-size: 16px; color: var(--body); max-width: 520px; line-height: 1.6; }

/* ---- CONTENT PAGE ---- */
.content-page { padding: 60px 0 80px; }
.content-page h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin: 40px 0 16px;
}
.content-page h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 10px;
}
.content-page p { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 18px; }
.content-page ul, .content-page ol { padding-left: 24px; margin-bottom: 18px; }
.content-page li { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 6px; }
.content-page a { color: var(--primary); }

/* ---- 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 1fr;
    gap: 32px;
    margin-bottom: 48px;
}
.footer-brand p {
    font-size: 14px;
    color: var(--body);
    margin-top: 12px;
    line-height: 1.6;
    max-width: 260px;
}
.footer-col-title {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    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); }
.footer-col 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;
    flex-wrap: wrap;
    gap: 12px;
}
.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); }

/* ---- RELATED ARTICLES ---- */
.related-section { padding: 60px 0 80px; border-top: 1px solid var(--hairline); }
.related-section .section-title { font-size: 26px; letter-spacing: -0.325px; margin-bottom: 32px; }

/* ---- DISCLAIMER ---- */
.disclaimer {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: 8px;
    padding: 16px 20px;
    margin-bottom: 32px;
}
.disclaimer p { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* ---- CODE BLOCKS ---- */
code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    background: var(--surface-card);
    color: var(--ink);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--hairline);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
    .hero h1 { font-size: 56px; letter-spacing: -1.4px; }
    .card-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }
    .hero h1 { font-size: 36px; letter-spacing: -0.9px; }
    .hero { padding: 48px 0; }
    .hero-image img { height: 240px; }
    .section { padding: 48px 0; }
    .section-title { font-size: 28px; letter-spacing: -0.56px; }
    .card-grid { grid-template-columns: 1fr; }
    .card-grid-2 { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
    #cookie-banner { flex-direction: column; gap: 12px; bottom: 12px; }
    .page-header h1 { font-size: 32px; }
    .article-hero-img img { height: 240px; }
    .info-band .card-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .footer-grid { grid-template-columns: 1fr; }
    .cookie-actions { width: 100%; }
    .cookie-accept, .cookie-reject { flex: 1; text-align: center; }
}