*, *::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;
    --ink: #26251e;
    --body: #5a5852;
    --body-strong: #26251e;
    --muted: #807d72;
    --muted-soft: #a09c92;
    --on-primary: #ffffff;
    --hairline: #e6e5e0;
    --hairline-soft: #efeee8;
    --hairline-strong: #cfcdc4;
    --semantic-success: #1f8a65;
    --semantic-error: #cf2d56;
    --rounded-xs: 4px;
    --rounded-sm: 6px;
    --rounded-md: 8px;
    --rounded-lg: 12px;
    --rounded-xl: 16px;
    --rounded-pill: 9999px;
}

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

body {
    font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--canvas);
    color: var(--body);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

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

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

h1, h2, h3 { color: var(--ink); font-weight: 400; line-height: 1.2; }
h1 { font-size: 2.25rem; letter-spacing: -0.045rem; }
h2 { font-size: 1.625rem; letter-spacing: -0.02rem; }
h3 { font-size: 1.375rem; letter-spacing: -0.01rem; }

p { margin-bottom: 1rem; color: var(--body); }
p:last-child { margin-bottom: 0; }

ul, ol { padding-left: 1.25rem; }
li { margin-bottom: 0.375rem; color: var(--body); }

.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;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 32px;
    height: 64px;
}

.nav-logo {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.02rem;
    flex-shrink: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    padding: 0;
    gap: 4px;
    margin: 0;
    margin-left: auto;
}

.nav-menu li { margin: 0; }

.nav-menu a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--muted);
    padding: 6px 12px;
    border-radius: var(--rounded-sm);
    transition: color 0.15s, background 0.15s;
    display: block;
}

.nav-menu a:hover {
    color: var(--ink);
    background: var(--hairline-soft);
}

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

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

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

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-label {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.088rem;
    text-transform: uppercase;
    color: var(--muted);
    background: var(--surface-strong);
    padding: 4px 10px;
    border-radius: var(--rounded-pill);
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 2.5rem;
    letter-spacing: -0.05rem;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero-desc {
    font-size: 1rem;
    color: var(--body);
    margin-bottom: 32px;
    line-height: 1.6;
}

.hero-image {
    border-radius: var(--rounded-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    aspect-ratio: 4/3;
    background: var(--surface-strong);
}

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

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

.section:last-of-type { border-bottom: none; }

.section-label {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.088rem;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 12px;
}

.section-title {
    font-size: 1.625rem;
    letter-spacing: -0.02rem;
    color: var(--ink);
    margin-bottom: 8px;
}

.section-desc {
    color: var(--muted);
    font-size: 1rem;
    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(--rounded-lg);
    overflow: hidden;
    transition: border-color 0.15s;
}

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

.article-card-img {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--surface-strong);
}

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

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

.article-card-body {
    padding: 24px;
}

.article-card-tag {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.088rem;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 10px;
}

.article-card-title {
    font-size: 1.125rem;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.01rem;
    line-height: 1.3;
    margin-bottom: 12px;
}

.article-card-excerpt {
    font-size: 0.875rem;
    color: var(--muted);
    line-height: 1.5;
    margin-bottom: 0;
}

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

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

.info-card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--rounded-md);
    background: var(--surface-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 1.25rem;
}

.info-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.info-card p {
    font-size: 0.875rem;
    color: var(--muted);
    margin: 0;
}

.bins-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.bin-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 20px 16px;
    text-align: center;
}

.bin-dot {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    margin: 0 auto 12px;
}

.bin-card h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 6px;
}

.bin-card p {
    font-size: 0.75rem;
    color: var(--muted);
    margin: 0;
    line-height: 1.4;
}

.bin-yellow .bin-dot { background: #f5d000; }
.bin-green .bin-dot { background: #2d8a4e; }
.bin-blue .bin-dot { background: #1a5fa8; }
.bin-brown .bin-dot { background: #8b5e3c; }
.bin-black .bin-dot { background: #1a1a1a; }

.article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    align-items: start;
}

.article-main h1 {
    font-size: 2rem;
    letter-spacing: -0.04rem;
    color: var(--ink);
    margin-bottom: 16px;
}

.article-meta {
    font-size: 0.875rem;
    color: var(--muted);
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--hairline);
}

.article-main h2 {
    font-size: 1.375rem;
    letter-spacing: -0.015rem;
    color: var(--ink);
    margin: 40px 0 16px;
}

.article-main h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 12px;
}

.article-main p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--body);
    margin-bottom: 16px;
}

.article-main ul, .article-main ol {
    margin-bottom: 16px;
}

.article-main li {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--body);
    margin-bottom: 6px;
}

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

.article-cover {
    width: 100%;
    border-radius: var(--rounded-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    margin-bottom: 32px;
    aspect-ratio: 16/9;
    background: var(--surface-strong);
}

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

.article-sidebar {
    position: sticky;
    top: 84px;
}

.sidebar-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 24px;
    margin-bottom: 20px;
}

.sidebar-card h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
    font-size: 0.75rem;
}

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

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

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

.sidebar-card a {
    font-size: 0.875rem;
    color: var(--body);
    transition: color 0.15s;
}

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

.highlight-box {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 20px 24px;
    margin: 24px 0;
}

.highlight-box p { margin: 0; font-size: 0.9375rem; }

.table-responsive { overflow-x: auto; margin: 24px 0; }

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

th {
    text-align: left;
    padding: 12px 16px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
    color: var(--muted);
    border-bottom: 1px solid var(--hairline);
    background: var(--canvas-soft);
}

td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--hairline-soft);
    color: var(--body);
    vertical-align: top;
}

tr:last-child td { border-bottom: none; }

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

.page-header h1 {
    font-size: 2.25rem;
    letter-spacing: -0.045rem;
    margin-bottom: 12px;
}

.page-header p {
    font-size: 1.0625rem;
    color: var(--muted);
    margin: 0;
    max-width: 600px;
}

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

.page-content h2 {
    font-size: 1.375rem;
    color: var(--ink);
    margin: 40px 0 16px;
    letter-spacing: -0.015rem;
}

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

.page-content p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--body);
    margin-bottom: 16px;
}

.page-content ul, .page-content ol {
    margin-bottom: 16px;
}

.page-content li {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--body);
    margin-bottom: 6px;
}

.contact-form-wrap {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 40px;
    max-width: 560px;
}

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

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 6px;
}

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

.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);
}

.form-submit {
    background: var(--ink);
    color: var(--canvas);
    border: none;
    padding: 12px 24px;
    height: 44px;
    border-radius: var(--rounded-md);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.form-submit:hover { opacity: 0.85; }
.form-submit:disabled { opacity: 0.5; cursor: not-allowed; }

.form-message {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: var(--rounded-md);
    font-size: 0.875rem;
    display: none;
}

.form-message.success {
    background: #e8f5f0;
    color: var(--semantic-success);
    border: 1px solid #b8dfd0;
    display: block;
}

.form-message.error {
    background: #fdf0f3;
    color: var(--semantic-error);
    border: 1px solid #f0c0cc;
    display: block;
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--ink);
    color: var(--canvas);
    z-index: 1000;
    padding: 20px 0;
}

.cookie-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 32px;
}

.cookie-inner p {
    font-size: 0.875rem;
    color: var(--canvas);
    margin: 0;
    flex: 1;
    line-height: 1.5;
}

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

.btn-cookie-accept {
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--rounded-md);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    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);
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--rounded-md);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: border-color 0.15s;
}

.btn-cookie-reject:hover { border-color: rgba(247,247,244,0.6); }

.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: 40px;
    margin-bottom: 48px;
}

.footer-logo {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
}

.footer-desc {
    font-size: 0.875rem;
    color: var(--muted);
    line-height: 1.5;
    margin: 0;
}

.footer-col h4 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
    color: var(--ink);
    margin-bottom: 16px;
}

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

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

.footer-col a {
    font-size: 0.875rem;
    color: var(--muted);
    transition: color 0.15s;
}

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

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

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--muted-soft);
    margin: 0;
}

.breadcrumb {
    font-size: 0.8125rem;
    color: var(--muted);
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.disclaimer {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-md);
    padding: 16px 20px;
    font-size: 0.8125rem;
    color: var(--muted);
    margin-top: 40px;
    line-height: 1.5;
}

.updated-date {
    font-size: 0.8125rem;
    color: var(--muted-soft);
    margin-top: 8px;
}

@media (max-width: 1024px) {
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .info-grid { grid-template-columns: repeat(2, 1fr); }
    .bins-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero h1 { font-size: 2rem; }
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .nav-menu {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--canvas);
        border-bottom: 1px solid var(--hairline);
        flex-direction: column;
        padding: 16px 24px;
        gap: 4px;
    }
    .nav-menu.open { display: flex; }
    .nav-menu a { padding: 10px 12px; }
    .articles-grid { grid-template-columns: 1fr; }
    .info-grid { grid-template-columns: 1fr; }
    .bins-grid { grid-template-columns: repeat(2, 1fr); }
    .hero { padding: 48px 0; }
    .hero h1 { font-size: 1.75rem; }
    .section { padding: 48px 0; }
    .footer-grid { grid-template-columns: 1fr; }
    .cookie-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
    .cookie-actions { width: 100%; }
    .contact-form-wrap { padding: 24px; }
}

@media (max-width: 480px) {
    .bins-grid { grid-template-columns: 1fr 1fr; }
    h1 { font-size: 1.5rem; }
}