*, *::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;
    --success: #1f8a65;
    --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;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--body);
    background: var(--canvas);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.site-header {
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    height: 64px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .container {
    display: flex;
    align-items: center;
    height: 100%;
    gap: 32px;
}

.site-logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.02em;
    flex-shrink: 0;
}

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

.site-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

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

.nav-link:hover,
.nav-active {
    color: var(--ink);
    background: var(--surface-strong);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    margin-left: auto;
}

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

.hero-band {
    background: var(--canvas);
    padding: 80px 0 60px;
    border-bottom: 1px solid var(--hairline-soft);
}

.hero-content { max-width: 700px; }

.badge-pill {
    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(--radius-pill);
    margin-bottom: 20px;
}

.hero-h1 {
    font-size: 48px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.2px;
    color: var(--ink);
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 18px;
    color: var(--muted);
    max-width: 560px;
    margin-bottom: 32px;
    line-height: 1.6;
}

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

.hero-image-wrap {
    margin-top: 48px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    background: var(--surface-card);
}

.hero-image-wrap img {
    width: 100%;
    height: 380px;
    object-fit: cover;
}

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

.section-desc {
    font-size: 16px;
    color: var(--body);
    max-width: 560px;
    line-height: 1.6;
    margin-bottom: 48px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: border-color 0.15s;
}

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

.card-icon {
    width: 40px;
    height: 40px;
    background: var(--canvas);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 18px;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
    line-height: 1.4;
}

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

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

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

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

.article-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--hairline);
}

.article-card-body { padding: 20px; }

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

.article-card-title {
    font-size: 18px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.11px;
    margin-bottom: 8px;
    line-height: 1.3;
}

.article-card-desc {
    font-size: 14px;
    color: var(--body);
    line-height: 1.5;
    margin-bottom: 16px;
}

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

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

.section-alt { background: var(--canvas-soft); }

.info-block {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-top: 32px;
}

.info-block h3 {
    font-size: 22px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.11px;
    margin-bottom: 12px;
}

.info-block p {
    font-size: 15px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 12px;
}

.info-block ul {
    list-style: disc;
    padding-left: 20px;
}

.info-block ul li {
    font-size: 15px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 4px;
}

.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
}

.contact-form-wrap {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.contact-form-wrap h2 {
    font-size: 26px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.33px;
    margin-bottom: 8px;
}

.contact-form-wrap p {
    font-size: 15px;
    color: var(--muted);
    margin-bottom: 24px;
}

.form-group { margin-bottom: 16px; }

.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);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    height: 44px;
    font-size: 15px;
    font-family: inherit;
    color: var(--ink);
    transition: border-color 0.15s;
    outline: none;
}

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

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

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

.field-error {
    font-size: 12px;
    color: var(--error);
    margin-top: 4px;
    display: none;
}

.btn-primary {
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    border-radius: var(--radius-md);
    padding: 10px 18px;
    height: 40px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary:hover { background: var(--primary-active); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

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

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

.form-success {
    display: none;
    background: #f0faf5;
    border: 1px solid var(--success);
    border-radius: var(--radius-md);
    padding: 16px;
    font-size: 15px;
    color: var(--success);
    margin-top: 16px;
}

.spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255,255,255,0.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.article-page { padding: 60px 0 80px; }

.article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    align-items: start;
}

.article-header { margin-bottom: 32px; }

.article-cat {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 12px;
}

.article-h1 {
    font-size: 36px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.72px;
    color: var(--ink);
    margin-bottom: 16px;
}

.article-meta {
    font-size: 13px;
    color: var(--muted-soft);
    margin-bottom: 24px;
}

.article-lead {
    font-size: 18px;
    color: var(--body-strong);
    line-height: 1.6;
    margin-bottom: 32px;
    border-left: 3px solid var(--primary);
    padding-left: 20px;
}

.article-img-main {
    width: 100%;
    height: 360px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    border: 1px solid var(--hairline);
    margin-bottom: 32px;
}

.article-body h2 {
    font-size: 26px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.33px;
    margin: 40px 0 12px;
}

.article-body h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 8px;
}

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

.article-body ul,
.article-body ol {
    padding-left: 20px;
    margin-bottom: 16px;
}

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

.article-body li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 4px;
}

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

.article-body img {
    border-radius: var(--radius-lg);
    border: 1px solid var(--hairline);
    margin: 24px 0;
    width: 100%;
    height: 280px;
    object-fit: cover;
}

.article-sidebar { position: sticky; top: 88px; }

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

.sidebar-card h3 {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}

.sidebar-card ul li {
    margin-bottom: 8px;
}

.sidebar-card ul li a {
    font-size: 14px;
    color: var(--body);
}

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

.toc-list { counter-reset: toc; }

.toc-list li {
    display: flex;
    gap: 10px;
    font-size: 14px;
    color: var(--body);
    padding: 6px 0;
    border-bottom: 1px solid var(--hairline-soft);
}

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

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

.toc-list li a:hover { color: var(--primary); }

.page-header {
    background: var(--canvas);
    padding: 60px 0 40px;
    border-bottom: 1px solid var(--hairline-soft);
}

.page-header h1 {
    font-size: 36px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.72px;
    margin-bottom: 8px;
}

.page-header p {
    font-size: 16px;
    color: var(--muted);
}

.page-content {
    padding: 60px 0 80px;
    max-width: 780px;
}

.page-content h2 {
    font-size: 22px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.11px;
    margin: 32px 0 10px;
}

.page-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: 24px 0 8px;
}

.page-content p {
    font-size: 15px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 14px;
}

.page-content ul {
    list-style: disc;
    padding-left: 20px;
    margin-bottom: 14px;
}

.page-content ul li {
    font-size: 15px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 4px;
}

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

.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;
    gap: 32px;
    margin-bottom: 48px;
}

.footer-brand {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

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

.footer-desc {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.6;
}

.footer-heading {
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}

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

.site-footer ul li a {
    font-size: 14px;
    color: var(--muted);
}

.site-footer ul li a:hover { color: var(--primary); }

.site-footer ul li:not(:has(a)) {
    font-size: 14px;
    color: var(--muted);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--hairline);
    font-size: 13px;
    color: var(--muted);
    gap: 16px;
    flex-wrap: wrap;
}

.footer-links {
    display: flex;
    gap: 16px;
}

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

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

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--ink);
    color: var(--canvas);
    z-index: 999;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.cookie-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.cookie-inner p {
    font-size: 14px;
    color: rgba(247,247,244,0.8);
    flex: 1;
    line-height: 1.5;
}

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

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

.table-wrap {
    overflow-x: auto;
    margin: 24px 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

thead tr { background: var(--canvas-soft); }

th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--hairline);
    color: var(--body);
}

th {
    font-weight: 600;
    color: var(--ink);
    font-size: 13px;
}

.note-box {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--primary);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin: 24px 0;
    font-size: 14px;
    color: var(--body);
    line-height: 1.6;
}

.ext-link::after {
    content: " ↗";
    font-size: 11px;
    color: var(--muted-soft);
}

@media (max-width: 1024px) {
    .cards-grid { grid-template-columns: repeat(2, 1fr); }
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
    .two-col { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .hero-h1 { font-size: 32px; letter-spacing: -0.5px; }
    .section-title { font-size: 28px; }
    .nav-toggle { display: flex; }
    .site-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--canvas);
        border-bottom: 1px solid var(--hairline);
        flex-direction: column;
        align-items: stretch;
        padding: 12px 24px;
        gap: 4px;
    }
    .site-nav.open { display: flex; }
    .site-header { position: relative; }
    .cookie-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
    .cards-grid { grid-template-columns: 1fr; }
    .articles-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .article-h1 { font-size: 28px; }
}