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

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

:root {
    --canvas: #f5f1ec;
    --surface-1: #ffffff;
    --surface-2: #ede9e3;
    --hairline: #d3cec6;
    --hairline-soft: #e5e1db;
    --ink: #111111;
    --ink-muted: #626260;
    --ink-subtle: #7b7b78;
    --ink-tertiary: #9c9fa5;
    --accent: #ff5600;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-xxl: 24px;
}

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

body {
    font-family: 'Inter', ui-sans-serif, system-ui, sans-serif;
    background-color: var(--canvas);
    color: var(--ink);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
}

/* ── NAVIGATION ── */
.site-nav {
    background-color: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    position: sticky;
    top: 0;
    z-index: 100;
    height: 56px;
}

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

.nav-logo {
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
    flex-shrink: 0;
}

.nav-logo:hover { text-decoration: none; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink-muted);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    transition: color 0.15s, background-color 0.15s;
}

.nav-links a:hover {
    color: var(--ink);
    background-color: var(--surface-2);
    text-decoration: none;
}

.nav-links a.active {
    color: var(--ink);
    background-color: var(--surface-1);
    border: 1px solid var(--hairline);
}

.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-md);
}

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

.nav-mobile {
    display: none;
    flex-direction: column;
    background-color: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: 12px 0;
}

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

.nav-mobile a {
    font-size: 15px;
    font-weight: 500;
    color: var(--ink-muted);
    padding: 10px 32px;
    display: block;
    border-bottom: 1px solid var(--hairline-soft);
}

.nav-mobile a:hover { color: var(--ink); text-decoration: none; background-color: var(--surface-2); }
.nav-mobile a:last-child { border-bottom: none; }

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

.hero-eyebrow {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink-muted);
    margin-bottom: 20px;
    display: inline-block;
}

.hero h1 {
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 500;
    line-height: 1.08;
    letter-spacing: -1.8px;
    color: var(--ink);
    max-width: 760px;
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 18px;
    font-weight: 400;
    color: var(--ink-muted);
    max-width: 560px;
    line-height: 1.55;
    margin-bottom: 0;
}

/* ── SECTION HEADINGS ── */
.section { padding: 80px 0; }

.section-eyebrow {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink-muted);
    margin-bottom: 12px;
    display: block;
}

.section-title {
    font-size: clamp(28px, 3.5vw, 40px);
    font-weight: 500;
    line-height: 1.15;
    letter-spacing: -0.8px;
    color: var(--ink);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 16px;
    color: var(--ink-muted);
    max-width: 580px;
    line-height: 1.6;
    margin-bottom: 48px;
}

/* ── ARTICLE CARDS ── */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.article-card {
    background-color: var(--surface-1);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color 0.15s;
}

.article-card:hover { border-color: var(--ink-tertiary); }

.article-card-img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    background-color: var(--surface-2);
}

.article-card-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-card-tag {
    font-size: 12px;
    font-weight: 500;
    color: var(--ink-muted);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.article-card-title {
    font-size: 18px;
    font-weight: 500;
    line-height: 1.3;
    letter-spacing: -0.2px;
    color: var(--ink);
    margin-bottom: 12px;
}

.article-card-desc {
    font-size: 14px;
    color: var(--ink-muted);
    line-height: 1.55;
    flex: 1;
    margin-bottom: 20px;
}

.article-card-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    border-bottom: 1px solid var(--hairline);
    padding-bottom: 2px;
    display: inline-block;
    transition: border-color 0.15s;
}

.article-card-link:hover { text-decoration: none; border-color: var(--ink); }

/* ── FEATURE STRIP ── */
.feature-strip {
    padding: 72px 0;
    border-top: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    background-color: var(--canvas);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

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

.feature-item-icon {
    width: 36px;
    height: 36px;
    margin-bottom: 16px;
    color: var(--ink);
}

.feature-item-title {
    font-size: 16px;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 8px;
    letter-spacing: -0.2px;
}

.feature-item-desc {
    font-size: 14px;
    color: var(--ink-muted);
    line-height: 1.55;
}

/* ── ARTICLE PAGE ── */
.article-hero {
    padding: 60px 0 48px;
    border-bottom: 1px solid var(--hairline);
}

.article-meta {
    font-size: 13px;
    color: var(--ink-muted);
    margin-bottom: 20px;
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
}

.article-meta-tag {
    font-weight: 500;
    padding: 3px 10px;
    background-color: var(--surface-2);
    border-radius: var(--radius-sm);
    border: 1px solid var(--hairline);
}

.article-hero h1 {
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 500;
    line-height: 1.12;
    letter-spacing: -1.2px;
    color: var(--ink);
    max-width: 820px;
    margin-bottom: 20px;
}

.article-hero-desc {
    font-size: 18px;
    color: var(--ink-muted);
    max-width: 640px;
    line-height: 1.55;
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 48px;
    padding: 56px 0 80px;
    align-items: start;
}

.article-content h2 {
    font-size: 26px;
    font-weight: 500;
    letter-spacing: -0.5px;
    line-height: 1.25;
    color: var(--ink);
    margin-top: 40px;
    margin-bottom: 16px;
}

.article-content h3 {
    font-size: 20px;
    font-weight: 500;
    letter-spacing: -0.2px;
    line-height: 1.3;
    color: var(--ink);
    margin-top: 28px;
    margin-bottom: 12px;
}

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

.article-content p strong { color: var(--ink); font-weight: 500; }

.article-content ul, .article-content ol {
    margin-bottom: 18px;
    padding-left: 24px;
}

.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }

.article-content li {
    font-size: 16px;
    color: var(--ink-muted);
    line-height: 1.65;
    margin-bottom: 6px;
}

.article-content li strong { color: var(--ink); }

.article-content figure {
    margin: 32px 0;
    background-color: var(--surface-1);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.article-content figure img {
    width: 100%;
    object-fit: cover;
}

.article-content figcaption {
    font-size: 13px;
    color: var(--ink-subtle);
    padding: 12px 16px;
    border-top: 1px solid var(--hairline-soft);
}

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

.info-box-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 8px;
}

.info-box p {
    font-size: 14px;
    color: var(--ink-muted);
    margin-bottom: 0;
}

.article-sidebar {
    position: sticky;
    top: 72px;
}

.sidebar-box {
    background-color: var(--surface-1);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 20px;
}

.sidebar-box-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-muted);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--hairline-soft);
}

.sidebar-toc a {
    display: block;
    font-size: 14px;
    color: var(--ink-muted);
    padding: 5px 0;
    border-bottom: 1px solid var(--hairline-soft);
    transition: color 0.15s;
}

.sidebar-toc a:last-child { border-bottom: none; }
.sidebar-toc a:hover { color: var(--ink); text-decoration: none; }

.sidebar-related a {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    padding: 8px 0;
    border-bottom: 1px solid var(--hairline-soft);
    transition: color 0.15s;
}

.sidebar-related a:last-child { border-bottom: none; }
.sidebar-related a:hover { text-decoration: none; color: var(--ink-muted); }

/* ── PAGE CONTENT (about, privacy, terms) ── */
.page-hero {
    padding: 60px 0 48px;
    border-bottom: 1px solid var(--hairline);
}

.page-hero h1 {
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 500;
    letter-spacing: -1.0px;
    line-height: 1.12;
    color: var(--ink);
    margin-bottom: 16px;
}

.page-hero p {
    font-size: 17px;
    color: var(--ink-muted);
    max-width: 600px;
    line-height: 1.55;
}

.page-content {
    padding: 56px 0 80px;
    max-width: 760px;
}

.page-content h2 {
    font-size: 22px;
    font-weight: 500;
    letter-spacing: -0.3px;
    color: var(--ink);
    margin-top: 40px;
    margin-bottom: 14px;
}

.page-content h3 {
    font-size: 17px;
    font-weight: 500;
    color: var(--ink);
    margin-top: 24px;
    margin-bottom: 10px;
}

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

.page-content p strong { color: var(--ink); font-weight: 500; }

.page-content ul {
    list-style: disc;
    padding-left: 24px;
    margin-bottom: 16px;
}

.page-content li {
    font-size: 16px;
    color: var(--ink-muted);
    line-height: 1.65;
    margin-bottom: 5px;
}

.page-date {
    font-size: 13px;
    color: var(--ink-subtle);
    margin-top: 48px;
    padding-top: 20px;
    border-top: 1px solid var(--hairline-soft);
}

/* ── CONTACT FORM ── */
.contact-section {
    padding: 64px 0;
    border-top: 1px solid var(--hairline);
}

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

.contact-info h2 {
    font-size: 28px;
    font-weight: 500;
    letter-spacing: -0.5px;
    color: var(--ink);
    margin-bottom: 14px;
}

.contact-info p {
    font-size: 15px;
    color: var(--ink-muted);
    line-height: 1.65;
    margin-bottom: 12px;
}

.contact-form {
    background-color: var(--surface-1);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-xl);
    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-color: var(--surface-1);
    color: var(--ink);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    font-size: 15px;
    font-family: inherit;
    min-height: 44px;
    transition: border-color 0.15s;
    outline: none;
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--ink-tertiary);
}

.form-group textarea {
    min-height: 110px;
    resize: vertical;
}

.btn-primary {
    display: inline-block;
    background-color: var(--ink);
    color: #ffffff;
    font-size: 15px;
    font-weight: 500;
    font-family: inherit;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: opacity 0.15s;
    min-height: 40px;
}

.btn-primary:hover { opacity: 0.85; text-decoration: none; }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.form-message {
    margin-top: 14px;
    font-size: 14px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    display: none;
}

.form-message.success {
    background-color: #edf7ed;
    color: #1e6b1e;
    border: 1px solid #b5deb5;
    display: block;
}

.form-message.error {
    background-color: #fdecea;
    color: #8b1a1a;
    border: 1px solid #f0b8b8;
    display: block;
}

/* ── ABOUT INFO GRID ── */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    padding: 56px 0;
    align-items: start;
    border-bottom: 1px solid var(--hairline);
}

.about-grid-text h2 {
    font-size: 28px;
    font-weight: 500;
    letter-spacing: -0.5px;
    color: var(--ink);
    margin-bottom: 18px;
}

.about-grid-text p {
    font-size: 16px;
    color: var(--ink-muted);
    line-height: 1.7;
    margin-bottom: 14px;
}

.about-img-card {
    background-color: var(--surface-1);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.about-img-card img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

/* ── FOOTER ── */
.site-footer {
    background-color: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 56px 0 36px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-brand-name {
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
    margin-bottom: 10px;
    display: block;
}

.footer-brand-desc {
    font-size: 13px;
    color: var(--ink-subtle);
    line-height: 1.6;
    max-width: 260px;
}

.footer-col-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 14px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-col ul li a {
    font-size: 13px;
    color: var(--ink-subtle);
    transition: color 0.15s;
}

.footer-col ul li a:hover { color: var(--ink); text-decoration: none; }

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

.footer-copyright {
    font-size: 12px;
    color: var(--ink-tertiary);
}

.footer-disclaimer {
    font-size: 12px;
    color: var(--ink-tertiary);
    max-width: 520px;
    text-align: right;
    line-height: 1.5;
}

/* ── COOKIE BANNER ── */
#cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--ink);
    color: #ffffff;
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    z-index: 999;
    flex-wrap: wrap;
}

.cookie-text {
    font-size: 13px;
    line-height: 1.5;
    color: rgba(255,255,255,0.85);
    max-width: 680px;
}

.cookie-text a { color: #ffffff; text-decoration: underline; }

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

.btn-cookie-accept {
    background-color: #ffffff;
    color: var(--ink);
    font-size: 13px;
    font-weight: 500;
    font-family: inherit;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    min-height: 36px;
}

.btn-cookie-reject {
    background-color: transparent;
    color: rgba(255,255,255,0.75);
    font-size: 13px;
    font-weight: 500;
    font-family: inherit;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255,255,255,0.25);
    cursor: pointer;
    min-height: 36px;
}

.btn-cookie-accept:hover { opacity: 0.9; }
.btn-cookie-reject:hover { color: #ffffff; border-color: rgba(255,255,255,0.6); }

/* ── BREADCRUMB ── */
.breadcrumb {
    padding: 14px 0;
    border-bottom: 1px solid var(--hairline-soft);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.breadcrumb-list li {
    font-size: 13px;
    color: var(--ink-muted);
}

.breadcrumb-list li a {
    color: var(--ink-muted);
    transition: color 0.15s;
}

.breadcrumb-list li a:hover { color: var(--ink); text-decoration: none; }

.breadcrumb-list li.active { color: var(--ink-subtle); }
.breadcrumb-list li.sep { color: var(--ink-tertiary); }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { display: none; }
    .contact-grid { grid-template-columns: 1fr; gap: 32px; }
    .about-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }
    .articles-grid { grid-template-columns: 1fr; }
    .feature-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
    .hero { padding: 48px 0; }
    .section { padding: 56px 0; }
    #cookie-banner { flex-direction: column; align-items: flex-start; padding: 16px 20px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .footer-disclaimer { text-align: center; }
}

@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
    .hero h1 { letter-spacing: -1.0px; }
    .cookie-buttons { width: 100%; justify-content: flex-start; }
}