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

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

html { scroll-behavior: smooth; }

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

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

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

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

h1, h2, h3, h4, h5, h6 {
    color: var(--ink);
    font-weight: 400;
    line-height: 1.2;
}

h1 { font-size: 72px; letter-spacing: -2.16px; }
h2 { font-size: 36px; letter-spacing: -0.72px; }
h3 { font-size: 26px; letter-spacing: -0.325px; }
h4 { font-size: 18px; font-weight: 600; }

p { color: var(--body); line-height: 1.5; }

.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-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    height: 64px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    text-decoration: none;
    white-space: nowrap;
}

.logo-icon { color: var(--primary); font-size: 10px; }
.logo-text { color: var(--ink); }

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

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

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

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

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

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

.hero-inner {
    max-width: 760px;
}

.hero-label {
    display: inline-flex;
    align-items: center;
    background: var(--surface-strong);
    color: var(--muted);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 9999px;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 72px;
    font-weight: 400;
    letter-spacing: -2.16px;
    color: var(--ink);
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 18px;
    color: var(--body);
    line-height: 1.5;
    max-width: 560px;
    margin-bottom: 32px;
}

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

.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);
    margin-bottom: 48px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.15s;
}

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

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

.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: 22px;
    font-weight: 400;
    letter-spacing: -0.11px;
    color: var(--ink);
    margin-bottom: 12px;
    line-height: 1.3;
}

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

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

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

.intro-band {
    background: var(--surface-card);
    border-top: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    padding: 80px 0;
}

.intro-band-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.intro-img {
    border-radius: 12px;
    border: 1px solid var(--hairline);
    width: 100%;
    height: 380px;
    object-fit: cover;
}

.intro-content h2 {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    margin-bottom: 20px;
}

.intro-content p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.5;
    margin-bottom: 16px;
}

.topics-list {
    list-style: none;
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.topics-list li {
    font-size: 14px;
    color: var(--body);
    padding: 10px 16px;
    background: var(--canvas);
    border: 1px solid var(--hairline);
    border-radius: 8px;
}

.topics-list li strong { color: var(--ink); }

.contact-section {
    padding: 80px 0;
    background: var(--canvas-soft);
    border-top: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
}

.contact-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-info h2 {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    margin-bottom: 16px;
}

.contact-info p {
    font-size: 16px;
    color: var(--body);
    margin-bottom: 12px;
}

.contact-info address {
    font-style: normal;
    font-size: 14px;
    color: var(--body);
    line-height: 1.8;
}

.contact-form {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 32px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 16px;
    color: var(--ink);
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
}

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

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

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

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

.form-message {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    display: none;
}

.form-message.success {
    background: #e8f5f0;
    border: 1px solid #b3d9c8;
    color: var(--success);
    display: block;
}

.form-message.error {
    background: #fdf0f2;
    border: 1px solid #f0b3bf;
    color: var(--error);
    display: block;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 16px;
}

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

.footer-col h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

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

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

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

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

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

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

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--ink);
    color: var(--canvas);
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 24px;
    z-index: 1000;
    flex-wrap: wrap;
    display: none;
}

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

.cookie-banner p {
    flex: 1;
    font-size: 14px;
    color: var(--canvas);
    line-height: 1.5;
}

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

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

.btn-cookie-accept {
    background: var(--primary);
    color: var(--on-primary);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

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

.btn-cookie-accept:hover { background: var(--primary-active); }
.btn-cookie-reject:hover { border-color: rgba(255,255,255,0.6); }

.article-header {
    background: var(--canvas);
    padding: 80px 0 48px;
    border-bottom: 1px solid var(--hairline);
}

.article-breadcrumb {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 16px;
}

.article-breadcrumb a { color: var(--muted); }
.article-breadcrumb a:hover { color: var(--ink); }
.article-breadcrumb span { margin: 0 6px; }

.article-title {
    font-size: 52px;
    font-weight: 400;
    letter-spacing: -1.5px;
    color: var(--ink);
    line-height: 1.1;
    margin-bottom: 20px;
    max-width: 760px;
}

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

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

.article-body {
    padding: 64px 0;
}

.article-content {
    max-width: 720px;
}

.article-content p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 20px;
    letter-spacing: 0.08px;
}

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

.article-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    margin-top: 32px;
    margin-bottom: 12px;
}

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

.article-content li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 6px;
}

.article-figure {
    margin: 40px 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--hairline);
}

.article-figure img {
    width: 100%;
    height: 440px;
    object-fit: cover;
}

.article-figure figcaption {
    padding: 12px 16px;
    background: var(--canvas-soft);
    font-size: 13px;
    color: var(--muted);
}

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

.sidebar-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 16px;
}

.sidebar-card h4 {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.88px;
    color: var(--muted);
    margin-bottom: 16px;
}

.sidebar-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

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

.info-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
    background: var(--surface-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--hairline);
}

.info-table th {
    background: var(--canvas);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.88px;
    color: var(--muted);
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--hairline);
}

.info-table td {
    padding: 12px 16px;
    color: var(--body);
    border-bottom: 1px solid var(--hairline-soft);
}

.info-table tr:last-child td { border-bottom: none; }
.info-table td:first-child { font-weight: 500; color: var(--ink); }

.callout {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--primary);
    border-radius: 8px;
    padding: 16px 20px;
    margin: 24px 0;
}

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

.page-header {
    padding: 80px 0 48px;
    border-bottom: 1px solid var(--hairline);
}

.page-content {
    max-width: 720px;
    padding: 64px 0;
}

.page-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin-top: 40px;
    margin-bottom: 14px;
}

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

.page-content ul {
    margin-left: 24px;
    margin-bottom: 16px;
}

.page-content li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 6px;
}

.disclaimer-box {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: 8px;
    padding: 16px 20px;
    margin-top: 40px;
}

.disclaimer-box p {
    font-size: 13px;
    color: var(--muted);
    margin: 0;
}

.related-articles {
    padding: 64px 0;
    border-top: 1px solid var(--hairline);
}

.related-articles h3 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin-bottom: 32px;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    display: inline-block;
}

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

@media (max-width: 1024px) {
    h1, .hero-title { font-size: 56px; letter-spacing: -1.5px; }
    .cards-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .intro-band-inner { gap: 40px; }
    .contact-inner { gap: 40px; }
}

@media (max-width: 768px) {
    h1, .hero-title { font-size: 36px; letter-spacing: -0.72px; }
    h2 { font-size: 26px; letter-spacing: -0.325px; }
    .section { padding: 48px 0; }
    .hero-section { padding: 48px 0; }

    .nav-hamburger { display: flex; }

    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--canvas);
        border-bottom: 1px solid var(--hairline);
        flex-direction: column;
        padding: 16px 24px;
        gap: 4px;
    }

    .nav-links.open { display: flex; }
    .nav-links li a { display: block; padding: 10px 12px; }

    .cards-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }

    .intro-band-inner { grid-template-columns: 1fr; gap: 32px; }
    .contact-inner { grid-template-columns: 1fr; gap: 32px; }

    .article-title { font-size: 32px; letter-spacing: -0.72px; }

    .article-body .container {
        display: block;
    }

    .article-sidebar { display: none; }
}

@media (max-width: 640px) {
    h1, .hero-title { font-size: 28px; }
    .hero-desc { font-size: 16px; }
    .container { padding: 0 16px; }
}