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

:root {
    --color-primary: #f54e00;
    --color-primary-active: #d04200;
    --color-canvas: #f7f7f4;
    --color-canvas-soft: #fafaf7;
    --color-surface-card: #ffffff;
    --color-surface-strong: #e6e5e0;
    --color-hairline: #e6e5e0;
    --color-hairline-soft: #efeee8;
    --color-hairline-strong: #cfcdc4;
    --color-ink: #26251e;
    --color-body: #5a5852;
    --color-body-strong: #26251e;
    --color-muted: #807d72;
    --color-muted-soft: #a09c92;
    --color-on-primary: #ffffff;
    --color-success: #1f8a65;
    --color-error: #cf2d56;
    --rounded-xs: 4px;
    --rounded-sm: 6px;
    --rounded-md: 8px;
    --rounded-lg: 12px;
    --rounded-xl: 16px;
    --rounded-pill: 9999px;
    --spacing-xxs: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-base: 16px;
    --spacing-md: 20px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-section: 80px;
}

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

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

body {
    font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--color-canvas);
    color: var(--color-body);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

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

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

/* ── TOP NAV ── */
.site-nav {
    background: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
    height: 64px;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.nav-logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-ink);
    letter-spacing: -0.02em;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-body);
    transition: color 0.15s;
}

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

.nav-burger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    color: var(--color-ink);
}

.nav-burger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-ink);
    margin: 5px 0;
    transition: all 0.25s;
}

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

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

.nav-mobile a {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-body);
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--color-hairline-soft);
}

/* ── HERO ── */
.hero {
    padding: var(--spacing-section) 0;
    background: var(--color-canvas);
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.hero-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    background: var(--color-surface-strong);
    padding: 4px 10px;
    border-radius: var(--rounded-pill);
    margin-bottom: var(--spacing-lg);
}

.hero h1 {
    font-size: 52px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.5px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-lg);
}

.hero-desc {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-body);
    margin-bottom: var(--spacing-xl);
    max-width: 480px;
}

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

.hero-img img {
    width: 100%;
    height: 340px;
    object-fit: cover;
}

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

.btn-primary:hover { background: var(--color-primary-active); color: var(--color-on-primary); }

.btn-secondary {
    display: inline-flex;
    align-items: center;
    background: var(--color-surface-card);
    color: var(--color-ink);
    font-size: 14px;
    font-weight: 500;
    line-height: 1;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--rounded-md);
    border: 1px solid var(--color-hairline-strong);
    cursor: pointer;
    transition: border-color 0.15s;
    text-decoration: none;
}

.btn-secondary:hover { border-color: var(--color-ink); color: var(--color-ink); }

/* ── SECTION ── */
.section { padding: var(--spacing-section) 0; }

.section-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    background: var(--color-surface-strong);
    padding: 4px 10px;
    border-radius: var(--rounded-pill);
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: 36px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.72px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-base);
}

.section-sub {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-body);
    max-width: 560px;
    margin-bottom: var(--spacing-xxl);
}

/* ── CARDS ── */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.cards-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.card {
    background: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
    transition: border-color 0.15s;
}

.card:hover { border-color: var(--color-hairline-strong); }

.card-img {
    border-radius: var(--rounded-md);
    overflow: hidden;
    margin-bottom: var(--spacing-base);
}

.card-img img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-xs);
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-ink);
    margin-bottom: var(--spacing-sm);
}

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

.card-text {
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-body);
    margin-bottom: var(--spacing-base);
}

.card-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary);
}

.card-link:hover { color: var(--color-primary-active); }

/* ── ARTICLE CARD ── */
.article-card {
    background: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    overflow: hidden;
    transition: border-color 0.15s;
}

.article-card:hover { border-color: var(--color-hairline-strong); }

.article-card-img img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.article-card-body {
    padding: var(--spacing-lg);
}

/* ── DIVIDER BAND ── */
.band-alt {
    background: var(--color-canvas-soft);
    border-top: 1px solid var(--color-hairline-soft);
    border-bottom: 1px solid var(--color-hairline-soft);
}

/* ── TIPS LIST ── */
.tips-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-base);
}

.tip-item {
    display: flex;
    gap: var(--spacing-base);
    background: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
}

.tip-number {
    font-size: 22px;
    font-weight: 400;
    letter-spacing: -0.11px;
    color: var(--color-primary);
    min-width: 40px;
    line-height: 1;
}

.tip-content h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xs);
}

.tip-content p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-body);
}

/* ── DATA BOX ── */
.data-box {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xxl);
}

.data-item {
    background: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
    text-align: center;
}

.data-value {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xs);
}

.data-label {
    font-size: 13px;
    color: var(--color-muted);
    line-height: 1.4;
}

/* ── CONTACT FORM ── */
.contact-section {
    padding: var(--spacing-section) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: start;
}

.contact-info h2 {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-base);
}

.contact-info p {
    font-size: 16px;
    color: var(--color-body);
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
}

.contact-detail {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    font-size: 14px;
    color: var(--color-body);
}

.form-group {
    margin-bottom: var(--spacing-base);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    background: var(--color-surface-card);
    color: var(--color-ink);
    border: 1px solid var(--color-hairline-strong);
    border-radius: var(--rounded-md);
    padding: 12px 16px;
    height: 44px;
    font-size: 16px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
}

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

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

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

.form-msg {
    display: none;
    padding: var(--spacing-sm) var(--spacing-base);
    border-radius: var(--rounded-md);
    font-size: 14px;
    font-weight: 500;
    margin-top: var(--spacing-base);
}

.form-msg.success {
    background: #d4edda;
    color: var(--color-success);
    border: 1px solid #c3e6cb;
    display: block;
}

.form-msg.error-msg {
    background: #f8d7da;
    color: var(--color-error);
    border: 1px solid #f5c6cb;
    display: block;
}

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

.article-hero h1 {
    font-size: 42px;
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -1px;
    color: var(--color-ink);
    max-width: 800px;
    margin-bottom: var(--spacing-base);
}

.article-meta {
    font-size: 13px;
    color: var(--color-muted);
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
}

.article-meta span { display: flex; align-items: center; gap: 4px; }

.article-body {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-xxl);
    padding: var(--spacing-section) 0;
}

.article-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--color-ink);
    margin: var(--spacing-xxl) 0 var(--spacing-base);
    line-height: 1.25;
}

.article-content h2:first-child { margin-top: 0; }

.article-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-sm);
    line-height: 1.3;
}

.article-content p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-body);
    margin-bottom: var(--spacing-base);
}

.article-content ul, .article-content ol {
    margin: var(--spacing-base) 0;
    padding-left: var(--spacing-xl);
}

.article-content li {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-body);
    margin-bottom: var(--spacing-xs);
}

.article-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

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

.article-content .callout {
    background: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-left: 3px solid var(--color-primary);
    border-radius: var(--rounded-sm);
    padding: var(--spacing-base) var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.article-content .callout p { margin: 0; font-size: 15px; }

.article-content figure {
    margin: var(--spacing-xl) 0;
}

.article-content figure img {
    border-radius: var(--rounded-lg);
    width: 100%;
    object-fit: cover;
    border: 1px solid var(--color-hairline);
}

.article-content figcaption {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: var(--spacing-xs);
    line-height: 1.4;
}

.article-sidebar {
    position: sticky;
    top: 80px;
    align-self: start;
}

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

.sidebar-box h4 {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-base);
}

.sidebar-box ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.sidebar-box ul li a {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.4;
}

.sidebar-box ul li a:hover { color: var(--color-primary); }

/* ── BREADCRUMB ── */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-base) 0;
    font-size: 13px;
    color: var(--color-muted);
}

.breadcrumb a { color: var(--color-muted); }
.breadcrumb a:hover { color: var(--color-ink); }
.breadcrumb span { color: var(--color-muted-soft); }

/* ── FOOTER ── */
.site-footer {
    background: var(--color-canvas);
    border-top: 1px solid var(--color-hairline);
    padding: 64px var(--spacing-xxl) 48px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xxl);
    max-width: 1200px;
    margin: 0 auto;
    padding-bottom: var(--spacing-xxl);
    border-bottom: 1px solid var(--color-hairline-soft);
}

.footer-brand p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
    margin-top: var(--spacing-sm);
    max-width: 280px;
}

.footer-col h5 {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-base);
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-col ul li a {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
}

.footer-col ul li a:hover { color: var(--color-ink); }

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--color-muted);
}

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

/* ── COOKIE BANNER ── */
.cookie-banner {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - var(--spacing-xxl) * 2);
    max-width: 900px;
    background: var(--color-ink);
    color: var(--color-canvas);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    z-index: 1000;
    box-shadow: 0 4px 32px rgba(38,37,30,0.18);
}

.cookie-banner p {
    font-size: 14px;
    line-height: 1.5;
    flex: 1;
}

.cookie-banner p a {
    color: var(--color-canvas);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.cookie-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.cookie-accept {
    background: var(--color-primary);
    color: var(--color-on-primary);
    border: none;
    border-radius: var(--rounded-md);
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s;
}

.cookie-accept:hover { background: var(--color-primary-active); }

.cookie-reject {
    background: transparent;
    color: var(--color-canvas);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--rounded-md);
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: border-color 0.15s;
}

.cookie-reject:hover { border-color: rgba(255,255,255,0.6); }

.cookie-hidden { display: none !important; }

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

.page-header h1 {
    font-size: 42px;
    font-weight: 400;
    letter-spacing: -1px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    font-size: 16px;
    color: var(--color-body);
    max-width: 600px;
}

.page-body {
    padding: var(--spacing-section) 0;
    max-width: 760px;
}

.page-body h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--color-ink);
    margin: var(--spacing-xxl) 0 var(--spacing-base);
}

.page-body h2:first-child { margin-top: 0; }

.page-body h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-sm);
}

.page-body p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-body);
    margin-bottom: var(--spacing-base);
}

.page-body ul, .page-body ol {
    margin: var(--spacing-base) 0;
    padding-left: var(--spacing-xl);
}

.page-body li {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-body);
    margin-bottom: var(--spacing-xs);
}

.page-body a {
    color: var(--color-primary);
}

.page-body a:hover { color: var(--color-primary-active); }

.page-updated {
    font-size: 13px;
    color: var(--color-muted);
    padding-top: var(--spacing-xxl);
    border-top: 1px solid var(--color-hairline-soft);
    margin-top: var(--spacing-xxl);
}

/* ── DISCLAIMER ── */
.disclaimer-bar {
    background: var(--color-canvas-soft);
    border-top: 1px solid var(--color-hairline-soft);
    padding: var(--spacing-base) 0;
    text-align: center;
    font-size: 13px;
    color: var(--color-muted);
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
    .hero-inner { grid-template-columns: 1fr; }
    .hero h1 { font-size: 42px; }
    .article-body { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .cards-grid { grid-template-columns: repeat(2, 1fr); }
    .data-box { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-burger { display: block; }
    .hero { padding: var(--spacing-xxl) 0; }
    .hero h1 { font-size: 32px; letter-spacing: -0.5px; }
    .section-title { font-size: 26px; }
    .cards-grid, .cards-grid-2 { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .data-box { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: var(--spacing-sm); text-align: center; }
    .cookie-banner { flex-direction: column; align-items: flex-start; width: calc(100% - var(--spacing-xl) * 2); bottom: var(--spacing-base); }
    .article-hero h1 { font-size: 28px; }
    .page-header h1 { font-size: 28px; }
}

@media (max-width: 640px) {
    .container { padding: 0 var(--spacing-base); }
    .hero h1 { font-size: 28px; }
}