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

html { scroll-behavior: smooth; }

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

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

.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-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
}

.nav-brand-dot { color: var(--primary); }

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

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

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

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    background: var(--surface-strong);
    color: var(--ink);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: var(--r-pill);
    margin-bottom: 20px;
}

.hero-title {
    font-size: 48px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.5px;
    color: var(--ink);
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 16px;
    line-height: 1.6;
    color: var(--body);
    margin-bottom: 32px;
    max-width: 480px;
}

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

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

.hero-img img {
    width: 100%;
    height: 360px;
    object-fit: cover;
}

/* SECTION */
.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;
    letter-spacing: -0.72px;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-sub {
    font-size: 16px;
    color: var(--body);
    max-width: 600px;
    line-height: 1.6;
    margin-bottom: 48px;
}

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

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

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

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

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

.card-body {
    padding: 24px;
}

.card-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 8px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.3;
    margin-bottom: 10px;
}

.card-excerpt {
    font-size: 14px;
    color: var(--body);
    line-height: 1.5;
    margin-bottom: 20px;
}

.card-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

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

/* INFO BOXES */
.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

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

.info-box-icon {
    font-size: 24px;
    margin-bottom: 12px;
}

.info-box-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
}

.info-box-text {
    font-size: 14px;
    color: var(--body);
    line-height: 1.5;
}

/* ARTICLE PAGE */
.article-layout {
    max-width: 1200px;
    margin: 0 auto;
    padding: 64px 24px 80px;
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 64px;
    align-items: start;
}

.article-header { margin-bottom: 40px; }

.article-badge {
    display: inline-block;
    background: var(--surface-strong);
    color: var(--ink);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: var(--r-pill);
    margin-bottom: 16px;
}

.article-title {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: 16px;
}

.article-meta {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 32px;
}

.article-hero-img {
    border-radius: var(--r-lg);
    border: 1px solid var(--hairline);
    overflow: hidden;
    margin-bottom: 40px;
}

.article-hero-img img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.article-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    line-height: 1.25;
    margin: 40px 0 16px;
}

.article-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 12px;
}

.article-content p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 20px;
}

.article-content ul, .article-content ol {
    margin: 0 0 20px 24px;
}

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

.article-content li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 6px;
}

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

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

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
}

.article-content th {
    background: var(--surface-strong);
    color: var(--ink);
    font-weight: 600;
    padding: 10px 14px;
    text-align: left;
    border: 1px solid var(--hairline);
}

.article-content td {
    padding: 10px 14px;
    border: 1px solid var(--hairline);
    color: var(--body);
    background: var(--surface-card);
}

.article-content tr:nth-child(even) td { background: var(--canvas-soft); }

.data-box {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: var(--r-lg);
    padding: 20px 24px;
    margin: 24px 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: var(--ink);
}

.callout {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--primary);
    border-radius: var(--r-md);
    padding: 16px 20px;
    margin: 24px 0;
}

.callout p {
    font-size: 14px;
    color: var(--body);
    line-height: 1.6;
    margin: 0;
}

/* SIDEBAR */
.article-sidebar { position: sticky; top: 80px; }

.sidebar-widget {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--r-lg);
    padding: 24px;
    margin-bottom: 24px;
}

.sidebar-heading {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}

.sidebar-toc ol {
    list-style: none;
    counter-reset: toc;
    margin: 0;
    padding: 0;
}

.sidebar-toc li {
    counter-increment: toc;
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
    font-size: 14px;
}

.sidebar-toc li::before {
    content: counter(toc);
    position: absolute;
    left: 0;
    color: var(--muted-soft);
    font-size: 12px;
}

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

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

.sidebar-links li {
    margin-bottom: 10px;
}

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

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

/* FORM */
.contact-form {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--r-lg);
    padding: 40px;
    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(--r-md);
    padding: 12px 16px;
    font-size: 16px;
    font-family: inherit;
    color: var(--ink);
    transition: border-color 0.15s;
    height: 44px;
}

.form-textarea { height: auto; min-height: 100px; resize: vertical; }

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

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

.btn-primary {
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    border-radius: var(--r-md);
    padding: 10px 18px;
    height: 40px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background 0.15s;
}

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

.btn-secondary {
    background: var(--surface-card);
    color: var(--ink);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--r-md);
    padding: 10px 18px;
    height: 40px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: border-color 0.15s;
}

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

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

.form-message.success {
    background: #e8f5f0;
    border: 1px solid var(--success);
    color: var(--success);
    display: block;
}

.form-message.loading {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    color: var(--muted);
    display: block;
}

/* BREADCRUMB */
.breadcrumb {
    padding: 16px 0;
    border-bottom: 1px solid var(--hairline-soft);
}

.breadcrumb-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    gap: 8px;
    align-items: center;
    font-size: 13px;
    color: var(--muted);
}

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

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

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: 48px;
}

.footer-brand {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
    margin-bottom: 12px;
}

.footer-brand-dot { color: var(--primary); }

.footer-desc {
    font-size: 14px;
    color: var(--body);
    line-height: 1.5;
}

.footer-heading {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}

.footer-links { display: flex; flex-direction: column; gap: 10px; }

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

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

.footer-disclaimer {
    font-size: 12px;
    color: var(--muted-soft);
    line-height: 1.5;
    margin-top: 16px;
}

.footer-bottom {
    border-top: 1px solid var(--hairline-soft);
    margin-top: 48px;
    padding: 24px 0;
}

.footer-bottom .footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    grid-template-columns: unset;
}

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

/* COOKIE BANNER */
.cookie-banner {
    display: none;
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 48px);
    max-width: 720px;
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--r-lg);
    padding: 20px 24px;
    z-index: 200;
    box-shadow: 0 4px 24px rgba(38,37,30,0.08);
}

.cookie-banner.visible { display: block; }

.cookie-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.cookie-inner p {
    flex: 1;
    font-size: 14px;
    color: var(--body);
    min-width: 200px;
    margin: 0;
}

.cookie-inner p a { color: var(--primary); text-decoration: underline; }

.cookie-btns {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

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

.page-header .container .page-badge {
    display: inline-block;
    background: var(--surface-strong);
    color: var(--ink);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: var(--r-pill);
    margin-bottom: 16px;
}

.page-header h1 {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: 12px;
}

.page-header p {
    font-size: 16px;
    color: var(--body);
    max-width: 600px;
    line-height: 1.6;
}

/* PROSE PAGE */
.prose {
    max-width: 760px;
    margin: 0 auto;
    padding: 64px 24px 80px;
}

.prose h1 {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    margin-bottom: 24px;
}

.prose h2 {
    font-size: 22px;
    font-weight: 600;
    color: var(--ink);
    margin: 40px 0 14px;
}

.prose p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 20px;
}

.prose ul {
    margin: 0 0 20px 24px;
    list-style: disc;
}

.prose li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 6px;
}

.prose a { color: var(--primary); text-decoration: underline; }
.prose a:hover { color: var(--primary-active); }

.prose .updated {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 40px;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero-title { font-size: 40px; }
    .cards-grid { grid-template-columns: repeat(2, 1fr); }
    .info-grid { grid-template-columns: repeat(2, 1fr); }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
    .footer-container { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
    .nav-links { display: none; flex-direction: column; gap: 0; position: absolute; top: 64px; left: 0; right: 0; background: var(--canvas); border-bottom: 1px solid var(--hairline); padding: 16px 24px; }
    .nav-links.open { display: flex; }
    .nav-links li a { display: block; padding: 10px 0; font-size: 15px; border-bottom: 1px solid var(--hairline-soft); }
    .nav-toggle { display: flex; }
    .site-nav { position: relative; }
    .hero-title { font-size: 32px; }
    .section-title { font-size: 28px; }
    .article-title { font-size: 28px; }
}

@media (max-width: 640px) {
    .cards-grid { grid-template-columns: 1fr; }
    .info-grid { grid-template-columns: 1fr; }
    .footer-container { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom .footer-container { flex-direction: column; gap: 8px; align-items: flex-start; }
    .contact-form { padding: 24px; }
    .cookie-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
}