@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;
    --timeline-thinking: #dfa88f;
    --timeline-grep: #9fc9a2;
    --timeline-read: #9fbbe0;
    --timeline-edit: #c0a8dd;
    --timeline-done: #c08532;

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

    --spacing-xxs: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-base: 16px;
    --spacing-md: 20px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-section: 80px;
}

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

body {
    background-color: var(--canvas);
    color: var(--body);
    font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    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: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-base);
}

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

.site-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    font-family: 'Inter', sans-serif;
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
    text-decoration: none;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-menu a {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--body);
    text-decoration: none;
    transition: color 0.15s;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--ink);
}

.nav-hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    flex-direction: column;
    gap: 5px;
}

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

.hero-band {
    padding: var(--spacing-section) 0;
    background-color: var(--canvas);
}

.hero-band h1 {
    font-size: 72px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -2.16px;
    color: var(--ink);
    max-width: 800px;
    margin-bottom: var(--spacing-xl);
}

.hero-band .hero-sub {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--body);
    max-width: 560px;
    margin-bottom: var(--spacing-xxl);
}

.hero-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-section);
}

.badge-pill {
    display: inline-flex;
    align-items: center;
    background-color: var(--surface-strong);
    color: var(--ink);
    font-size: 11px;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    border-radius: var(--rounded-pill);
    padding: 4px 10px;
}

.hero-image-wrap {
    width: 100%;
    border-radius: var(--rounded-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    max-height: 480px;
}

.hero-image-wrap img {
    width: 100%;
    height: 480px;
    object-fit: cover;
}

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

.section-label {
    font-size: 11px;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: var(--spacing-lg);
    display: block;
}

.display-lg {
    font-size: 36px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.72px;
    color: var(--ink);
}

.display-md {
    font-size: 26px;
    font-weight: 400;
    line-height: 1.25;
    letter-spacing: -0.325px;
    color: var(--ink);
}

.display-sm {
    font-size: 22px;
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: -0.11px;
    color: var(--ink);
}

.title-md {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--ink);
}

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

.body-sm {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--body);
}

.caption {
    font-size: 13px;
    font-weight: 400;
    line-height: 1.4;
    color: var(--muted);
}

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

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.card-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

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

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

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

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

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

.article-card-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.article-card-body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-card-body .article-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

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

.article-card-body p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--body);
    flex: 1;
}

.article-card-link {
    margin-top: var(--spacing-base);
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    text-decoration: none;
}

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

.cta-band {
    background-color: var(--canvas);
    border-top: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    padding: 96px 0;
    text-align: center;
}

.cta-band h2 {
    font-size: 36px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.72px;
    color: var(--ink);
    margin-bottom: var(--spacing-xxl);
}

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

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(4, 1fr);
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-xxl);
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--body);
    margin-top: var(--spacing-sm);
    max-width: 260px;
}

.footer-col h4 {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: var(--spacing-base);
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-col ul li a {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--body);
    text-decoration: none;
    transition: color 0.15s;
}

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

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

.footer-bottom p {
    font-size: 14px;
    color: var(--muted);
}

.article-hero {
    padding: var(--spacing-section) 0 var(--spacing-xl);
}

.article-hero h1 {
    font-size: 48px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.2px;
    color: var(--ink);
    max-width: 800px;
    margin-bottom: var(--spacing-lg);
}

.article-meta-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xxl);
}

.article-meta-row span {
    font-size: 14px;
    color: var(--muted);
}

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

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

.article-body h3 {
    font-size: 22px;
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: -0.11px;
    color: var(--ink);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.article-body p {
    font-size: 16px;
    line-height: 1.5;
    color: var(--body);
    margin-bottom: var(--spacing-base);
    letter-spacing: 0.08px;
}

.article-body ul,
.article-body ol {
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-base);
}

.article-body li {
    font-size: 16px;
    line-height: 1.5;
    color: var(--body);
    margin-bottom: var(--spacing-xs);
}

.article-body a {
    color: var(--primary);
    text-decoration: underline;
    text-decoration-color: rgba(245, 78, 0, 0.3);
}

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

.article-image-full {
    width: 100%;
    border-radius: var(--rounded-lg);
    border: 1px solid var(--hairline);
    overflow: hidden;
    margin: var(--spacing-xxl) 0;
}

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

.article-image-caption {
    font-size: 13px;
    color: var(--muted);
    padding: var(--spacing-sm) var(--spacing-base);
    background-color: var(--canvas-soft);
    border-top: 1px solid var(--hairline-soft);
}

.info-box {
    background-color: var(--surface-card);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--timeline-read);
    border-radius: var(--rounded-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

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

.code-block {
    background-color: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-md);
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.5;
    color: var(--ink);
    overflow-x: auto;
    margin: var(--spacing-xl) 0;
}

.steps-list {
    list-style: none;
    counter-reset: steps;
    padding: 0;
    margin: var(--spacing-xl) 0;
}

.steps-list li {
    counter-increment: steps;
    display: flex;
    gap: var(--spacing-base);
    margin-bottom: var(--spacing-base);
    align-items: flex-start;
}

.steps-list li::before {
    content: counter(steps);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 28px;
    background-color: var(--ink);
    color: var(--canvas);
    font-size: 13px;
    font-weight: 600;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 2px;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-xl) 0;
    font-size: 14px;
}

.specs-table th {
    text-align: left;
    padding: var(--spacing-sm) var(--spacing-base);
    background-color: var(--canvas-soft);
    color: var(--ink);
    font-weight: 600;
    border-bottom: 1px solid var(--hairline);
}

.specs-table td {
    padding: var(--spacing-sm) var(--spacing-base);
    color: var(--body);
    border-bottom: 1px solid var(--hairline-soft);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-base) 0;
    font-size: 14px;
    color: var(--muted);
}

.breadcrumb a {
    color: var(--muted);
    text-decoration: none;
}

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

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

.contact-form-wrap {
    background-color: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    max-width: 560px;
}

.contact-form-wrap h3 {
    font-size: 22px;
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: -0.11px;
    color: var(--ink);
    margin-bottom: var(--spacing-base);
}

.contact-form-wrap p {
    font-size: 14px;
    color: var(--body);
    margin-bottom: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-base);
}

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

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

.form-group textarea {
    height: 120px;
    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(--semantic-error);
}

.field-error {
    font-size: 13px;
    color: var(--semantic-error);
    margin-top: 4px;
    display: none;
}

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

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

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

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--surface-card);
    color: var(--ink);
    font-size: 14px;
    font-weight: 500;
    line-height: 1;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--rounded-md);
    border: 1px solid var(--hairline-strong);
    cursor: pointer;
    transition: border-color 0.15s;
    text-decoration: none;
}

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

.form-success {
    display: none;
    background-color: rgba(31, 138, 101, 0.08);
    border: 1px solid rgba(31, 138, 101, 0.3);
    border-radius: var(--rounded-md);
    padding: var(--spacing-base) var(--spacing-lg);
    font-size: 14px;
    color: var(--semantic-success);
    margin-top: var(--spacing-base);
}

.cookie-banner {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-base) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    flex-wrap: wrap;
    max-width: 680px;
    width: calc(100% - 32px);
    z-index: 999;
    box-shadow: 0 4px 16px rgba(38, 37, 30, 0.08);
}

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

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

.cookie-actions {
    display: flex;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}

.btn-cookie-accept {
    background-color: var(--ink);
    color: var(--canvas);
    font-size: 13px;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--rounded-md);
    border: none;
    cursor: pointer;
}

.btn-cookie-reject {
    background-color: transparent;
    color: var(--body);
    font-size: 13px;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--rounded-md);
    border: 1px solid var(--hairline-strong);
    cursor: pointer;
}

.page-hero {
    padding: var(--spacing-section) 0 var(--spacing-xl);
    border-bottom: 1px solid var(--hairline);
}

.page-hero h1 {
    font-size: 48px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.2px;
    color: var(--ink);
    max-width: 720px;
    margin-bottom: var(--spacing-base);
}

.page-hero p {
    font-size: 16px;
    line-height: 1.5;
    color: var(--body);
    max-width: 560px;
}

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

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

.page-content h2:first-child {
    margin-top: 0;
}

.page-content h3 {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--ink);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.page-content p {
    font-size: 16px;
    line-height: 1.5;
    color: var(--body);
    margin-bottom: var(--spacing-base);
    max-width: 720px;
}

.page-content ul,
.page-content ol {
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-base);
    max-width: 720px;
}

.page-content li {
    font-size: 16px;
    line-height: 1.5;
    color: var(--body);
    margin-bottom: var(--spacing-xs);
}

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

.update-date {
    font-size: 13px;
    color: var(--muted);
    display: block;
    margin-bottom: var(--spacing-section);
}

.two-col {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xxl);
    align-items: start;
}

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

    .article-hero h1 {
        font-size: 40px;
    }

    .page-hero h1 {
        font-size: 40px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xxl) var(--spacing-xl);
    }

    .two-col {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background-color: var(--canvas);
        border-bottom: 1px solid var(--hairline);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-base);
        gap: var(--spacing-sm);
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-hamburger {
        display: flex;
    }

    .site-nav {
        position: relative;
    }
}

@media (max-width: 640px) {
    .hero-band h1 {
        font-size: 32px;
        letter-spacing: -0.8px;
    }

    .hero-band {
        padding: var(--spacing-xxl) 0;
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .cta-band h2 {
        font-size: 26px;
    }

    .article-hero h1 {
        font-size: 30px;
        letter-spacing: -0.5px;
    }

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

    .hero-image-wrap img {
        height: 240px;
    }

    .display-lg {
        font-size: 26px;
    }

    .contact-form-wrap {
        padding: var(--spacing-lg);
    }
}