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

*, *::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;
    --semantic-success: #1f8a65;
    --semantic-error: #cf2d56;

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

    --max-w: 1200px;
    --section: 80px;
}

html { font-size: 16px; 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;
    -webkit-font-smoothing: antialiased;
}

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

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

ul[role="list"] { list-style: none; }

.container {
    width: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 24px;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--ink);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0;
    flex-shrink: 0;
}

.logo-mark {
    background: var(--primary);
    color: var(--on-primary);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    padding: 4px 8px;
    border-radius: var(--r-sm);
}

.logo-text {
    font-size: 15px;
    font-weight: 500;
    color: var(--ink);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

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

.nav-link:hover { color: var(--ink); background: var(--surface-strong); }
.nav-link--active { color: var(--ink); font-weight: 600; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--r-md);
}

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

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

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

.hero-tag {
    display: inline-flex;
    align-items: center;
    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-h1 {
    font-size: 52px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.5px;
    color: var(--ink);
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 18px;
    line-height: 1.6;
    color: var(--body);
    max-width: 460px;
}

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

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

.section { padding: var(--section) 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;
    line-height: 1.2;
    color: var(--ink);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 16px;
    line-height: 1.5;
    color: var(--body);
    max-width: 560px;
    margin-bottom: 48px;
}

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

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

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

.article-card__image {
    height: 200px;
    overflow: hidden;
}

.article-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.article-card:hover .article-card__image img { transform: scale(1.03); }

.article-card__body { padding: 24px; flex: 1; display: flex; flex-direction: column; }

.article-card__tag {
    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: 600;
    line-height: 1.35;
    color: var(--ink);
    margin-bottom: 10px;
}

.article-card__excerpt {
    font-size: 14px;
    line-height: 1.5;
    color: var(--body);
    flex: 1;
    margin-bottom: 20px;
}

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

.article-card__link::after { content: '→'; }

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

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

.feature-card__icon {
    width: 40px;
    height: 40px;
    background: var(--surface-strong);
    border-radius: var(--r-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 16px;
}

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

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

.form-section {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--r-lg);
    padding: 48px;
    max-width: 600px;
    margin: 0 auto;
}

.form-title {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin-bottom: 8px;
}

.form-subtitle {
    font-size: 15px;
    color: var(--body);
    margin-bottom: 32px;
}

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

.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(--r-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: auto;
    min-height: 100px;
    resize: vertical;
}

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

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

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

.field-error.visible { display: block; }

.btn-primary {
    background: var(--primary);
    color: var(--on-primary);
    font-size: 14px;
    font-weight: 500;
    line-height: 1;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--r-md);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background 0.15s;
}

.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);
    font-size: 14px;
    font-weight: 500;
    line-height: 1;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--r-md);
    border: 1px solid var(--hairline-strong);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    transition: background 0.15s;
}

.btn-secondary:hover { background: var(--surface-strong); }

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

.form-message--success {
    background: #eaf7f2;
    border: 1px solid #b2e0d0;
    color: var(--semantic-success);
}

.form-message.visible { display: block; }

.article-hero {
    padding: 60px 0 40px;
    border-bottom: 1px solid var(--hairline);
}

.article-hero .container { max-width: 800px; }

.article-meta {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 16px;
    display: flex;
    gap: 16px;
    align-items: center;
}

.article-meta__tag {
    background: var(--surface-strong);
    color: var(--ink);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: var(--r-pill);
}

.article-h1 {
    font-size: 42px;
    font-weight: 400;
    letter-spacing: -1px;
    line-height: 1.15;
    color: var(--ink);
    margin-bottom: 16px;
}

.article-lead {
    font-size: 18px;
    line-height: 1.6;
    color: var(--body);
    max-width: 640px;
    margin-bottom: 32px;
}

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

.article-cover img {
    width: 100%;
    height: 420px;
    object-fit: cover;
}

.article-body { padding: 48px 0; }

.article-body .container { max-width: 740px; }

.article-body h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin: 40px 0 16px;
    padding-top: 8px;
    border-top: 1px solid var(--hairline-soft);
}

.article-body h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 12px;
}

.article-body p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--body);
    margin-bottom: 18px;
}

.article-body ul,
.article-body ol {
    margin: 0 0 18px 24px;
}

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

.article-body strong { color: var(--body-strong); font-weight: 600; }

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

.info-box {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--primary);
    border-radius: var(--r-lg);
    padding: 20px 24px;
    margin: 28px 0;
}

.info-box__title {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 8px;
}

.info-box p { margin-bottom: 0; }

.ref-list { margin: 32px 0; }

.ref-list__title {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--hairline);
}

.ref-list ul { margin-left: 0; list-style: none; }

.ref-list li {
    font-size: 13px;
    color: var(--muted);
    padding: 4px 0;
    border-bottom: 1px solid var(--hairline-soft);
}

.ref-list a { color: var(--body); }

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

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

.page-lead {
    font-size: 16px;
    color: var(--body);
    max-width: 560px;
}

.page-content { padding: 48px 0; }

.page-content .container { max-width: 740px; }

.page-content h2 {
    font-size: 22px;
    font-weight: 600;
    color: var(--ink);
    margin: 36px 0 12px;
}

.page-content p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--body);
    margin-bottom: 16px;
}

.page-content ul {
    margin: 0 0 16px 24px;
}

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

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

.update-note {
    font-size: 12px;
    color: var(--muted-soft);
    margin-top: 40px;
    padding-top: 16px;
    border-top: 1px solid var(--hairline-soft);
}

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

.footer-container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-logo {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    display: block;
    margin-bottom: 12px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.5;
    color: var(--body);
    max-width: 260px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-col-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
}

.footer-col ul { list-style: none; }

.footer-col a {
    font-size: 14px;
    color: var(--body);
    display: block;
    padding: 3px 0;
    transition: color 0.15s;
}

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

.footer-bottom {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 24px 24px 0;
    border-top: 1px solid var(--hairline);
}

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

.footer-disclaimer {
    font-size: 12px;
    color: var(--muted-soft);
    margin-top: 4px;
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--ink);
    color: var(--canvas);
    z-index: 1000;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.cookie-banner__inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 24px;
    justify-content: space-between;
}

.cookie-banner p {
    font-size: 14px;
    line-height: 1.4;
    flex: 1;
}

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

.cookie-banner .btn-primary {
    background: var(--primary);
    border: none;
}

.cookie-banner .btn-secondary {
    background: transparent;
    color: var(--canvas);
    border-color: rgba(255,255,255,0.3);
}

.cookie-banner .btn-secondary:hover {
    background: rgba(255,255,255,0.1);
}

.breadcrumb {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 6px;
}

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

@media (max-width: 1023px) {
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero-h1 { font-size: 40px; }
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-container { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 767px) {
    .nav-toggle { display: flex; }
    .nav-menu {
        display: none;
        flex-direction: column;
        gap: 4px;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--canvas);
        border-bottom: 1px solid var(--hairline);
        padding: 12px 24px 16px;
    }
    .nav-menu.open { display: flex; }
    .site-nav { position: relative; }

    .hero-h1 { font-size: 32px; letter-spacing: -0.8px; }
    .section-title { font-size: 28px; }
    .article-h1 { font-size: 28px; }
    .articles-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr; }
    .form-section { padding: 24px; }
    .cookie-banner__inner { flex-direction: column; align-items: flex-start; gap: 12px; }
    .cookie-banner__actions { width: 100%; }
}