.blog-main {
    align-items: start;
}
.blog-shell {
    width: min(100%, 980px);
}

.blog-hero {
    padding: clamp(34px, 7vw, 72px);
    border: 1px solid var(--line-strong);
    background: rgba(255, 252, 247, 0.94);
    box-shadow: var(--shadow);
}

.blog-breadcrumbs {
    margin-bottom: 34px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 800;
}

.blog-breadcrumbs a {
    text-underline-offset: 3px;
}

.blog-breadcrumbs a:hover,
.blog-breadcrumbs a:focus-visible {
    color: var(--accent);
}

.blog-hero h1 {
    max-width: 760px;
    margin: 0;
    font-size: clamp(40px, 8vw, 74px);
    font-weight: 950;
    line-height: 0.98;
    letter-spacing: -0.075em;
}

.blog-lead {
    max-width: 660px;
    margin: 24px 0 0;
    color: var(--muted);
    font-size: clamp(14px, 2vw, 17px);
    line-height: 1.85;
}

.topic-nav {
    margin: 18px 0 0;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border: 1px solid var(--line-strong);
    border-bottom: 0;
    background: var(--surface);
}

.topic-nav a {
    min-height: 84px;
    padding: 15px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-right: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
    text-decoration: none;
}

.topic-nav a:last-child {
    border-right: 0;
}

.topic-nav a:hover,
.topic-nav a:focus-visible {
    background: var(--accent);
    color: #fff;
}

.topic-number {
    color: var(--accent);
    font-size: 10px;
    font-weight: 900;
}

.topic-nav a:hover .topic-number,
.topic-nav a:focus-visible .topic-number {
    color: rgba(255, 255, 255, 0.72);
}

.topic-nav strong {
    font-size: 15px;
    letter-spacing: -0.03em;
}

.blog-section {
    padding: clamp(38px, 6vw, 64px) 0 0;
}

.blog-section-heading {
    margin-bottom: 18px;
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
}

.blog-section-heading h2 {
    margin: 0;
    font-size: clamp(25px, 5vw, 38px);
    letter-spacing: -0.055em;
}

.blog-section-heading p {
    max-width: 500px;
    margin: 0;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.65;
    text-align: right;
}

.article-card {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(220px, 0.6fr);
    border: 1px solid var(--line-strong);
    background: var(--surface);
    color: var(--text);
    text-decoration: none;
}

.article-card-main {
    min-height: 280px;
    padding: clamp(28px, 5vw, 48px);
    display: flex;
    flex-direction: column;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    color: var(--accent);
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.06em;
}

.article-card h3 {
    max-width: 560px;
    margin: 24px 0 14px;
    font-size: clamp(27px, 5vw, 44px);
    line-height: 1.08;
    letter-spacing: -0.06em;
}

.article-card p {
    max-width: 620px;
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.75;
}

.article-read {
    margin-top: auto;
    padding-top: 30px;
    font-size: 12px;
    font-weight: 900;
}

.article-card-side {
    min-height: 280px;
    padding: 26px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-left: 1px solid var(--line-strong);
    background:
        linear-gradient(135deg, var(--accent-soft), transparent 55%),
        var(--surface-2);
}

.article-card-side strong {
    max-width: 180px;
    font-size: clamp(34px, 6vw, 54px);
    line-height: 0.86;
    letter-spacing: -0.08em;
}

.article-card-side > span {
    align-self: flex-end;
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line-strong);
    font-size: 20px;
}

.article-card:hover,
.article-card:focus-visible {
    border-color: var(--accent);
}

.article-card:hover .article-card-side,
.article-card:focus-visible .article-card-side {
    background: var(--accent);
    color: #fff;
}

.topic-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border: 1px solid var(--line-strong);
    background: var(--surface);
}

.topic-card {
    min-height: 230px;
    padding: 26px;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--line-strong);
}

.topic-card:last-child {
    border-right: 0;
}

.topic-card .topic-number {
    margin-bottom: 42px;
}

.topic-card h3 {
    margin: 0 0 12px;
    font-size: 23px;
    letter-spacing: -0.05em;
}

.topic-card p {
    margin: 0 0 24px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.7;
}

.topic-card a {
    margin-top: auto;
    color: var(--accent);
    font-size: 12px;
    font-weight: 900;
    text-underline-offset: 4px;
}

.blog-principles {
    margin-top: 18px;
    padding: clamp(28px, 5vw, 42px);
    display: grid;
    grid-template-columns: 0.7fr 1.3fr;
    gap: 32px;
    border: 1px solid var(--line-strong);
    background: var(--text);
    color: var(--surface);
}

.blog-principles h2 {
    margin: 0;
    font-size: 26px;
    letter-spacing: -0.05em;
}

.blog-principles ul {
    margin: 0;
    padding: 0;
    display: grid;
    gap: 14px;
    list-style: none;
    color: rgba(255, 252, 247, 0.74);
    font-size: 13px;
    line-height: 1.6;
}

.blog-principles li::before {
    content: "— ";
    color: var(--accent);
}

.blog-footer {
    margin-top: 18px;
    border: 1px solid var(--line-strong);
    background: var(--surface);
}

.post-shell {
    width: min(100%, 860px);
}

.post-article {
    border: 1px solid var(--line-strong);
    background: var(--surface);
    box-shadow: var(--shadow);
}

.post-header {
    padding: clamp(34px, 7vw, 68px);
    border-bottom: 1px solid var(--line-strong);
}

.post-header h1 {
    max-width: 720px;
    margin: 22px 0 18px;
    font-size: clamp(36px, 7vw, 64px);
    line-height: 1.04;
    letter-spacing: -0.07em;
}

.post-summary {
    max-width: 680px;
    margin: 0;
    color: var(--muted);
    font-size: clamp(15px, 2vw, 18px);
    line-height: 1.85;
}

.post-byline {
    margin-top: 28px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 800;
}

.post-content {
    max-width: 720px;
    margin: 0 auto;
    padding: clamp(36px, 7vw, 72px) clamp(24px, 6vw, 54px);
}

.post-content h2 {
    margin: 58px 0 18px;
    font-size: clamp(25px, 4vw, 34px);
    line-height: 1.25;
    letter-spacing: -0.055em;
}

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

.post-content p,
.post-content li {
    color: var(--muted);
    font-size: 16px;
    line-height: 2;
}

.post-content p {
    margin: 0 0 22px;
}

.post-content ul {
    margin: 0 0 28px;
    padding-left: 22px;
}

.post-content strong {
    color: var(--text);
}

.post-content a {
    color: var(--accent);
    font-weight: 800;
    text-underline-offset: 4px;
}

.post-note {
    margin: 34px 0;
    padding: 24px;
    border-left: 4px solid var(--accent);
    background: var(--accent-soft);
}

.post-note p {
    margin: 0;
    color: var(--text);
    font-size: 14px;
    line-height: 1.8;
}

.post-links {
    margin-top: 58px;
    padding-top: 28px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    border-top: 1px solid var(--line);
}

.post-links a {
    padding: 18px;
    border: 1px solid var(--line-strong);
    color: var(--text);
    text-decoration: none;
}

.post-links a:hover,
.post-links a:focus-visible {
    border-color: var(--accent);
    background: var(--accent);
    color: #fff;
}

html[data-theme="dark"] .blog-hero {
    background: rgba(33, 30, 25, 0.94);
}

html[data-theme="dark"] .blog-principles {
    background: #12100e;
}

@media (max-width: 720px) {
    .topic-nav {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .topic-nav a:nth-child(2) {
        border-right: 0;
    }

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

    .article-card-side {
        min-height: 150px;
        border-top: 1px solid var(--line-strong);
        border-left: 0;
    }

    .article-card-side strong {
        max-width: none;
    }

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

    .topic-card {
        min-height: 190px;
        border-right: 0;
        border-bottom: 1px solid var(--line-strong);
    }

    .topic-card:last-child {
        border-bottom: 0;
    }

    .blog-principles {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 520px) {
    .blog-section-heading {
        align-items: start;
        flex-direction: column;
    }

    .blog-section-heading p {
        text-align: left;
    }

    .post-content p,
    .post-content li {
        font-size: 15px;
        line-height: 1.9;
    }

    .post-links {
        grid-template-columns: 1fr;
    }
}