@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;700&display=swap');

:root {
    --canvas: #000000;
    --surface-card: #1a1a1a;
    --surface-soft: #0d0d0d;
    --surface-elevated: #262626;
    --hairline: #3c3c3c;
    --text: #ffffff;
    --body: #bbbbbb;
    --muted: #7e7e7e;
    --m-blue-light: #0066b1;
    --m-blue-dark: #1c69d4;
    --m-red: #e22718;
    --sidebar-width: 280px;
    --section-gap: 96px;
    --card-padding: 24px;
}

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

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

body {
    background: var(--canvas);
    color: var(--body);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 300;
    line-height: 1.5;
    min-height: 100vh;
}

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

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

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

h1, h2, h3, h4 {
    font-weight: 700;
    color: var(--text);
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: -0.5px;
}

h1 { font-size: 56px; }
h2 { font-size: 40px; }
h3 { font-size: 32px; }
h4 { font-size: 24px; }

p {
    font-weight: 300;
    color: var(--body);
    font-size: 16px;
    line-height: 1.5;
}

.m-stripe {
    height: 4px;
    background: linear-gradient(to right, var(--m-blue-light) 33.33%, var(--m-blue-dark) 33.33% 66.66%, var(--m-red) 66.66%);
    width: 100%;
}

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--surface-card);
    border-right: 1px solid var(--hairline);
    overflow-y: auto;
    z-index: 100;
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    padding: 32px 24px 24px;
    border-bottom: 1px solid var(--hairline);
}

.sidebar-brand a {
    display: block;
}

.sidebar-brand .brand-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 1px;
    line-height: 1.2;
}

.sidebar-brand .brand-tagline {
    font-size: 11px;
    font-weight: 300;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-top: 4px;
}

.sidebar-nav {
    padding: 16px 0;
    flex: 1;
}

.sidebar-nav-label {
    font-size: 10px;
    font-weight: 700;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: 16px 24px 8px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    padding: 10px 24px;
    font-size: 13px;
    font-weight: 300;
    color: var(--body);
    transition: color 0.15s, background 0.15s;
    border-left: 2px solid transparent;
    line-height: 1.4;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    color: var(--text);
    background: rgba(255,255,255,0.04);
    border-left-color: var(--text);
}

.sidebar-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--hairline);
}

.sidebar-footer a {
    display: block;
    font-size: 12px;
    color: var(--muted);
    padding: 4px 0;
}

.sidebar-footer a:hover {
    color: var(--body);
}

.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.page-hero {
    position: relative;
    width: 100%;
    min-height: 480px;
    overflow: hidden;
    display: flex;
    align-items: flex-end;
}

.page-hero-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.page-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.92) 40%, rgba(0,0,0,0.4) 100%);
}

.page-hero-content {
    position: relative;
    z-index: 2;
    padding: 64px 64px 64px;
    max-width: 900px;
}

.page-hero-content h1 {
    font-size: 56px;
    font-weight: 700;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: -0.5px;
    line-height: 1.05;
}

.page-hero-content p {
    font-size: 18px;
    font-weight: 300;
    color: var(--body);
    margin-top: 16px;
    max-width: 600px;
}

.content-wrapper {
    padding: var(--section-gap) 64px;
    flex: 1;
}

.content-wrapper.narrow {
    max-width: 860px;
}

.label-uppercase {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--muted);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border: 1px solid var(--text);
    background: transparent;
    color: var(--text);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    border-radius: 0;
    line-height: 1;
    min-height: 48px;
}

.btn:hover {
    background: var(--text);
    color: var(--canvas);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 12px;
    min-height: 40px;
}

.card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    padding: var(--card-padding);
}

.card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    margin-bottom: var(--card-padding);
}

.card h3 {
    font-size: 18px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

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

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text);
    margin-top: 16px;
}

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

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

.grid-3 > * {
    background: var(--canvas);
}

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

.breadcrumb {
    padding: 16px 64px;
    border-bottom: 1px solid var(--hairline);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.breadcrumb a {
    font-size: 12px;
    font-weight: 300;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.breadcrumb span {
    font-size: 12px;
    color: var(--hairline);
}

.breadcrumb .current {
    font-size: 12px;
    color: var(--body);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.article-body {
    max-width: 800px;
}

.article-body h2 {
    font-size: 32px;
    margin-top: 64px;
    margin-bottom: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--hairline);
}

.article-body h3 {
    font-size: 22px;
    margin-top: 40px;
    margin-bottom: 16px;
}

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

.article-body ul,
.article-body ol {
    margin: 16px 0 24px 24px;
    color: var(--body);
}

.article-body li {
    margin-bottom: 8px;
    font-weight: 300;
    font-size: 15px;
    line-height: 1.6;
}

.article-body strong {
    font-weight: 700;
    color: var(--text);
}

.toc {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--m-blue-light);
    padding: 24px 28px;
    margin-bottom: 48px;
    max-width: 640px;
}

.toc-title {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--muted);
    margin-bottom: 16px;
}

.toc ol {
    list-style: none;
    padding: 0;
    margin: 0;
    counter-reset: toc;
}

.toc li {
    counter-increment: toc;
    margin-bottom: 8px;
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.toc li::before {
    content: counter(toc, decimal-leading-zero);
    font-size: 10px;
    font-weight: 700;
    color: var(--muted);
    letter-spacing: 1px;
    flex-shrink: 0;
}

.toc a {
    font-size: 14px;
    font-weight: 300;
    color: var(--body);
    transition: color 0.15s;
}

.toc a:hover {
    color: var(--text);
}

.disclaimer-box {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--m-red);
    padding: 20px 24px;
    margin: 40px 0;
}

.disclaimer-box p {
    font-size: 13px;
    font-weight: 300;
    color: var(--muted);
    line-height: 1.6;
    margin: 0;
}

.related-block {
    border-top: 1px solid var(--hairline);
    padding-top: 48px;
    margin-top: 64px;
}

.related-block .section-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--muted);
    margin-bottom: 24px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--hairline);
}

.related-item {
    background: var(--canvas);
    padding: 24px;
}

.related-item a {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text);
    display: block;
    margin-bottom: 8px;
}

.related-item a:hover {
    color: var(--body);
}

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

.site-footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 64px 64px 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 48px;
}

.footer-col h4 {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text);
    margin-bottom: 16px;
}

.footer-col a {
    display: block;
    font-size: 13px;
    font-weight: 300;
    color: var(--muted);
    padding: 4px 0;
    transition: color 0.15s;
}

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

.footer-col p {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.6;
}

.footer-bottom {
    border-top: 1px solid var(--hairline);
    padding-top: 32px;
}

.footer-disclaimer {
    font-size: 12px;
    font-weight: 300;
    color: var(--muted);
    line-height: 1.6;
    margin-bottom: 12px;
    max-width: 900px;
}

.footer-copyright {
    font-size: 12px;
    color: var(--muted);
}

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

.guides-index-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1px;
    background: var(--hairline);
    margin-top: 32px;
}

.guide-list-item {
    background: var(--canvas);
    padding: 32px 40px;
    display: flex;
    align-items: center;
    gap: 32px;
    transition: background 0.15s;
}

.guide-list-item:hover {
    background: var(--surface-card);
}

.guide-list-item .guide-num {
    font-size: 48px;
    font-weight: 700;
    color: var(--hairline);
    line-height: 1;
    flex-shrink: 0;
    width: 64px;
    text-align: right;
}

.guide-list-item .guide-info h3 {
    font-size: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.guide-list-item .guide-info p {
    font-size: 14px;
    color: var(--muted);
}

.guide-list-item .guide-arrow {
    margin-left: auto;
    font-size: 20px;
    color: var(--muted);
    flex-shrink: 0;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--body);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    color: var(--text);
    font-family: inherit;
    font-size: 15px;
    font-weight: 300;
    padding: 14px 16px;
    border-radius: 0;
    height: 48px;
    outline: none;
    transition: border-color 0.15s;
}

.form-input:focus {
    border-color: var(--text);
}

.form-input::placeholder {
    color: var(--muted);
}

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

.form-error {
    font-size: 12px;
    color: var(--m-red);
    margin-top: 6px;
    display: none;
}

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

.form-success {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-left: 3px solid #0fa336;
    padding: 20px 24px;
    display: none;
    margin-top: 24px;
}

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

.form-success p {
    font-size: 15px;
    color: var(--text);
}

.loading-text {
    display: none;
}

.loading-text.visible {
    display: inline;
}

.cookie-banner {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 360px;
    background: var(--canvas);
    border: 1px solid var(--hairline);
    padding: 24px;
    z-index: 9999;
    display: none;
}

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

.cookie-banner h3 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.cookie-banner p {
    font-size: 12px;
    font-weight: 300;
    color: var(--muted);
    margin-bottom: 16px;
    line-height: 1.6;
}

.cookie-banner-btns {
    display: flex;
    gap: 12px;
}

.cookie-banner-btns .btn {
    flex: 1;
    padding: 10px 16px;
    font-size: 12px;
    min-height: 40px;
}

.cookie-reject {
    border-color: var(--hairline);
    color: var(--muted);
}

.cookie-reject:hover {
    background: var(--surface-card);
    color: var(--text);
}

.hamburger-btn {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 200;
    width: 48px;
    height: 48px;
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    color: var(--text);
    font-size: 20px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    z-index: 99;
}

.sidebar-overlay.visible {
    display: block;
}

.page-section {
    padding: var(--section-gap) 64px;
}

.page-section + .page-section {
    padding-top: 0;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 32px;
}

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

.info-card h3 {
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.info-card p {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.6;
}

@media (max-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    h1, .page-hero-content h1 { font-size: 40px; }
    h2 { font-size: 32px; }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .hamburger-btn {
        display: flex;
    }
    .main-content {
        margin-left: 0;
    }
    .page-hero-content {
        padding: 40px 24px 40px;
    }
    .page-hero-content h1 {
        font-size: 32px;
    }
    .content-wrapper {
        padding: 48px 24px;
    }
    .breadcrumb {
        padding: 12px 24px;
    }
    .grid-3,
    .related-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .site-footer {
        padding: 48px 24px 24px;
    }
    .page-section {
        padding: 48px 24px;
    }
    h1 { font-size: 28px; }
    h2 { font-size: 24px; }
    h3 { font-size: 20px; }
    .guide-list-item {
        flex-wrap: wrap;
        padding: 24px;
    }
    .guide-list-item .guide-num {
        font-size: 32px;
        width: 40px;
    }
    .info-grid {
        grid-template-columns: 1fr;
    }
    .grid-2 {
        grid-template-columns: 1fr;
    }
    .cookie-banner {
        width: calc(100% - 32px);
        left: 16px;
        right: 16px;
    }
}