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

:root {
    --canvas: #f7f7f4;
    --canvas-soft: #fafaf7;
    --surface-card: #ffffff;
    --surface-strong: #e6e5e0;
    --ink: #26251e;
    --body: #5a5852;
    --body-strong: #26251e;
    --muted: #807d72;
    --muted-soft: #a09c92;
    --primary: #f54e00;
    --primary-active: #d04200;
    --on-primary: #ffffff;
    --hairline: #e6e5e0;
    --hairline-soft: #efeee8;
    --hairline-strong: #cfcdc4;
    --success: #1f8a65;
    --error: #cf2d56;

    --font-sans: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    --rounded-xs: 4px;
    --rounded-sm: 6px;
    --rounded-md: 8px;
    --rounded-lg: 12px;
    --rounded-xl: 16px;
    --rounded-pill: 9999px;

    --section: 80px;
    --container: 1200px;
}

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

body {
    background-color: var(--canvas);
    color: var(--body);
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

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

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

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

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

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

.site-logo {
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
    line-height: 1;
}

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

.main-nav ul {
    display: flex;
    gap: 4px;
    list-style: none;
    align-items: center;
}

.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--body);
    padding: 8px 12px;
    border-radius: var(--rounded-md);
    transition: color 0.15s, background 0.15s;
    line-height: 1.4;
}

.nav-link:hover,
.nav-link.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;
}

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

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

.hero-inner {
    max-width: 800px;
}

.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: var(--rounded-pill);
    margin-bottom: 24px;
}

.hero-band h1 {
    font-size: 72px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -2.16px;
    color: var(--ink);
    margin-bottom: 24px;
}

.hero-band .hero-sub {
    font-size: 18px;
    font-weight: 400;
    color: var(--body);
    line-height: 1.5;
    max-width: 600px;
    margin-bottom: 32px;
}

.hero-meta {
    font-size: 13px;
    color: var(--muted);
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.section {
    padding: var(--section) 0;
}

.section-border {
    border-bottom: 1px solid var(--hairline);
}

.section-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 20px;
    display: block;
}

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

.section-sub {
    font-size: 16px;
    color: var(--body);
    line-height: 1.5;
    max-width: 600px;
    margin-bottom: 48px;
}

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

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

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

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

.feature-card .card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--rounded-md);
    margin-bottom: 20px;
    background: var(--surface-strong);
}

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

.feature-card h3,
.feature-card .card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.4;
    margin-bottom: 12px;
}

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

.feature-card .card-footer {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--hairline-soft);
    font-size: 13px;
    color: var(--muted);
}

.card-link {
    display: block;
    color: inherit;
}

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

.article-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.article-row {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 32px;
    padding: 32px 0;
    border-bottom: 1px solid var(--hairline-soft);
    align-items: start;
}

.article-row:first-child {
    border-top: 1px solid var(--hairline-soft);
}

.article-row-img {
    width: 200px;
    height: 140px;
    object-fit: cover;
    border-radius: var(--rounded-md);
    background: var(--surface-strong);
}

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

.article-row-title {
    font-size: 22px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.11px;
    line-height: 1.3;
    margin-bottom: 10px;
}

.article-row-title a:hover {
    color: var(--primary);
}

.article-row-excerpt {
    font-size: 15px;
    color: var(--body);
    line-height: 1.5;
    margin-bottom: 12px;
}

.article-row-date {
    font-size: 13px;
    color: var(--muted);
}

.article-page .article-header {
    padding: 64px 0 48px;
    border-bottom: 1px solid var(--hairline);
}

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

.article-page h1 {
    font-size: 48px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -1.2px;
    line-height: 1.15;
    margin-bottom: 20px;
    max-width: 800px;
}

.article-page .article-intro {
    font-size: 18px;
    color: var(--body);
    line-height: 1.55;
    max-width: 700px;
    margin-bottom: 24px;
}

.article-page .article-meta {
    font-size: 13px;
    color: var(--muted);
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.article-body {
    padding: 48px 0 80px;
    max-width: 720px;
}

.article-body h2 {
    font-size: 26px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.325px;
    line-height: 1.25;
    margin-top: 48px;
    margin-bottom: 16px;
}

.article-body h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin-top: 32px;
    margin-bottom: 12px;
    line-height: 1.4;
}

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

.article-body ul,
.article-body ol {
    padding-left: 24px;
    margin-bottom: 20px;
}

.article-body li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 8px;
}

.article-body .article-img {
    width: 100%;
    border-radius: var(--rounded-lg);
    margin: 32px 0;
    border: 1px solid var(--hairline);
}

.article-body .img-caption {
    font-size: 13px;
    color: var(--muted);
    text-align: center;
    margin-top: -24px;
    margin-bottom: 32px;
}

.article-body .info-box {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--primary);
    border-radius: var(--rounded-md);
    padding: 20px 24px;
    margin: 32px 0;
}

.article-body .info-box p {
    margin-bottom: 0;
    font-size: 15px;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 32px 0;
    font-size: 14px;
}

.article-body th {
    background: var(--surface-strong);
    color: var(--ink);
    font-weight: 600;
    padding: 12px 16px;
    text-align: left;
    border: 1px solid var(--hairline);
}

.article-body td {
    padding: 12px 16px;
    border: 1px solid var(--hairline-soft);
    color: var(--body);
    background: var(--surface-card);
}

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

.article-sidebar {
    padding-top: 48px;
}

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

.sidebar-card .sidebar-title {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}

.sidebar-card ul {
    list-style: none;
    padding: 0;
}

.sidebar-card li {
    padding: 8px 0;
    border-bottom: 1px solid var(--hairline-soft);
    font-size: 14px;
}

.sidebar-card li:last-child {
    border-bottom: none;
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 48px;
    align-items: start;
}

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

.page-header h1 {
    font-size: 48px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -1.2px;
    line-height: 1.15;
    margin-bottom: 16px;
}

.page-header p {
    font-size: 18px;
    color: var(--body);
    line-height: 1.5;
    max-width: 600px;
}

.page-body {
    padding: 48px 0 80px;
    max-width: 760px;
}

.page-body h2 {
    font-size: 26px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.325px;
    line-height: 1.25;
    margin-top: 48px;
    margin-bottom: 16px;
}

.page-body h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin-top: 28px;
    margin-bottom: 10px;
}

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

.page-body ul, .page-body ol {
    padding-left: 24px;
    margin-bottom: 20px;
}

.page-body li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 8px;
}

.contact-form {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 32px;
    margin-top: 48px;
    max-width: 600px;
}

.contact-form h2 {
    font-size: 22px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.11px;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 6px;
    letter-spacing: 0.2px;
}

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

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

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

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

.btn-primary {
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    border-radius: var(--rounded-md);
    padding: 10px 18px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    height: 40px;
    cursor: pointer;
    transition: background 0.15s;
    line-height: 1;
}

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

.btn-primary:disabled {
    background: var(--muted-soft);
    cursor: not-allowed;
}

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

.form-status.success {
    background: #e6f4ef;
    color: var(--success);
    border: 1px solid #b3ddd0;
    display: block;
}

.form-status.error {
    background: #fce8ed;
    color: var(--error);
    border: 1px solid #f0b3c3;
    display: block;
}

.loading-spinner {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.4);
    border-top-color: var(--on-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
    margin-left: 8px;
}

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

.site-footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 64px 0 48px;
}

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

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

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

.footer-tagline {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.5;
}

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

.site-footer ul {
    list-style: none;
    padding: 0;
}

.site-footer ul li {
    margin-bottom: 10px;
}

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

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

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

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

.footer-bottom .container {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--muted);
    flex-wrap: wrap;
    gap: 8px;
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--ink);
    color: var(--canvas);
    z-index: 1000;
    padding: 0;
}

.cookie-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.cookie-banner p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--canvas);
}

.cookie-banner a {
    color: #f7c3a7;
    text-decoration: underline;
}

.cookie-actions {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

.btn-cookie-accept {
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    border-radius: var(--rounded-md);
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    height: 40px;
    transition: background 0.15s;
}

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

.btn-cookie-reject {
    background: transparent;
    color: var(--canvas);
    border: 1px solid rgba(247,247,244,0.3);
    border-radius: var(--rounded-md);
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    height: 40px;
    transition: border-color 0.15s;
}

.btn-cookie-reject:hover {
    border-color: rgba(247,247,244,0.7);
}

.breadcrumb {
    font-size: 13px;
    color: var(--muted);
    padding: 16px 0;
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

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

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

.breadcrumb-sep {
    color: var(--hairline-strong);
}

.related-articles {
    padding: 48px 0;
    border-top: 1px solid var(--hairline);
}

.related-articles .section-label {
    margin-bottom: 24px;
}

@media (max-width: 1024px) {
    .hero-band h1 {
        font-size: 56px;
        letter-spacing: -1.5px;
    }

    .footer-inner {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 32px;
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .article-layout {
        grid-template-columns: 1fr;
    }

    .article-sidebar {
        padding-top: 0;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .main-nav {
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--canvas);
        border-bottom: 1px solid var(--hairline);
        display: none;
        padding: 8px 24px 16px;
        z-index: 99;
    }

    .main-nav.open {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }

    .hero-band h1 {
        font-size: 36px;
        letter-spacing: -0.9px;
    }

    .hero-band {
        padding: 48px 0;
    }

    .section {
        padding: 48px 0;
    }

    .grid-3, .grid-2 {
        grid-template-columns: 1fr;
    }

    .article-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .article-row-img {
        width: 100%;
        height: 200px;
    }

    .footer-inner {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .article-page h1 {
        font-size: 32px;
        letter-spacing: -0.5px;
    }

    .section-title {
        font-size: 28px;
    }

    .cookie-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .footer-inner {
        grid-template-columns: 1fr;
    }

    .hero-band h1 {
        font-size: 30px;
    }

    .footer-bottom .container {
        flex-direction: column;
    }
}