:root {
    --bg-base: #151515;
    --bg-elev-1: #1c1c1c;
    --bg-elev-2: #232323;
    --mint: hsl(159, 100%, 67%);
    --mint-soft: rgba(87, 255, 195, 0.12);
    --text-primary: rgb(250, 250, 250);
    --text-body: rgb(218, 218, 222);
    --text-muted: rgb(166, 166, 176);
    --border-subtle: rgba(82, 82, 91, 0.55);
    --sans: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--sans);
    line-height: 1.86;
    -webkit-font-smoothing: antialiased;
}

.article-shell {
    margin: 0 auto;
    max-width: 780px;
    padding: 0 28px;
}

.article-header {
    border-bottom: 1px solid var(--border-subtle);
    padding: 112px 0 42px;
}

.back-link {
    color: var(--text-muted);
    display: inline-flex;
    font-size: 13px;
    margin-bottom: 28px;
    text-decoration: none;
}

.back-link:hover,
.source-list a:hover,
.related-links a:hover {
    color: var(--mint);
}

.article-kicker {
    background: var(--mint-soft);
    border: 1px solid rgba(87, 255, 195, 0.32);
    border-radius: 999px;
    color: var(--mint);
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
    padding: 5px 12px;
}

h1 {
    font-size: clamp(29px, 5vw, 43px);
    letter-spacing: -0.035em;
    line-height: 1.26;
    margin-bottom: 16px;
}

.article-deck {
    color: var(--text-body);
    font-size: 17px;
    line-height: 1.78;
    margin-bottom: 18px;
}

.article-meta {
    color: var(--text-muted);
    font-size: 13px;
}

.article-content {
    padding: 44px 0 18px;
}

.article-content h2 {
    font-size: 24px;
    letter-spacing: -0.025em;
    line-height: 1.42;
    margin: 48px 0 17px;
}

.article-content h3 {
    font-size: 18px;
    line-height: 1.5;
    margin: 32px 0 12px;
}

.article-content p {
    color: var(--text-body);
    font-size: 16px;
    margin-bottom: 19px;
}

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

.article-content ul,
.article-content ol {
    color: var(--text-body);
    margin: 16px 0 22px 24px;
}

.article-content li {
    font-size: 15.5px;
    margin-bottom: 9px;
    padding-left: 3px;
}

.article-content a {
    color: var(--mint);
}

.lead-note,
.source-note,
.action-box,
.warning-box {
    background: var(--bg-elev-1);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    margin: 28px 0;
    padding: 23px 25px;
}

.lead-note {
    border-color: rgba(87, 255, 195, 0.35);
}

.lead-note p,
.source-note p,
.action-box p,
.warning-box p {
    font-size: 14.5px;
    margin-bottom: 0;
}

.evidence-figure {
    left: 50%;
    margin: 32px 0;
    position: relative;
    transform: translateX(-50%);
    width: min(1040px, calc(100vw - 32px));
}

.evidence-figure img {
    background: #fff;
    border: 1px solid var(--border-subtle);
    border-radius: 15px;
    display: block;
    height: auto;
    width: 100%;
}

.evidence-figure figcaption {
    color: var(--text-muted);
    font-size: 12.5px;
    line-height: 1.65;
    margin-top: 10px;
    padding: 0 4px;
}

.evidence-figure figcaption a {
    color: var(--text-muted);
}

.fact-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 24px 0;
}

.fact-card {
    background: var(--bg-elev-1);
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    padding: 20px;
}

.fact-card strong {
    display: block;
    font-size: 16px;
    margin-bottom: 6px;
}

.fact-card p {
    color: var(--text-muted);
    font-size: 13.5px;
    margin: 0;
}

.comparison {
    border: 1px solid var(--border-subtle);
    border-radius: 15px;
    margin: 26px 0;
    overflow: hidden;
}

.comparison-row {
    border-bottom: 1px solid var(--border-subtle);
    display: grid;
    gap: 20px;
    grid-template-columns: 130px 1fr;
    padding: 18px 20px;
}

.comparison-row:last-child {
    border-bottom: 0;
}

.comparison-row strong {
    font-size: 14px;
}

.comparison-row p {
    font-size: 14px;
    margin: 0;
}

.month-plan {
    border-left: 1px solid rgba(87, 255, 195, 0.5);
    margin: 26px 0 28px 9px;
    padding-left: 27px;
}

.month-step {
    margin-bottom: 28px;
    position: relative;
}

.month-step::before {
    background: var(--mint);
    border: 4px solid var(--bg-base);
    border-radius: 50%;
    content: '';
    height: 15px;
    left: -35px;
    position: absolute;
    top: 7px;
    width: 15px;
}

.month-step h3 {
    margin: 0 0 8px;
}

.month-step p {
    font-size: 15px;
    margin-bottom: 7px;
}

.source-list,
.related-links {
    border-top: 1px solid var(--border-subtle);
    margin-top: 48px;
    padding-top: 27px;
}

.source-list h2,
.related-links h2 {
    font-size: 19px;
    margin: 0 0 13px;
}

.source-list li {
    color: var(--text-muted);
    font-size: 13.5px;
}

.source-list a,
.related-links a {
    color: var(--text-muted);
}

.related-links a {
    border-bottom: 1px solid var(--border-subtle);
    display: block;
    font-size: 14px;
    padding: 11px 0;
    text-decoration: none;
}

.article-cta {
    background: var(--bg-elev-1);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    margin: 42px 0 52px;
    padding: 34px;
    text-align: center;
}

.article-cta h2 {
    font-size: 22px;
    margin: 0 0 9px;
}

.article-cta p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 19px;
}

.cta-button {
    background: var(--mint);
    border-radius: 999px;
    color: #111;
    display: inline-block;
    font-size: 14px;
    font-weight: 700;
    padding: 11px 24px;
    text-decoration: none;
}

.cta-button + .cta-button {
    background: transparent;
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    margin-left: 8px;
}

.article-footer {
    border-top: 1px solid var(--border-subtle);
    color: var(--text-muted);
    font-size: 12.5px;
    padding: 30px 0 38px;
    text-align: center;
}

.article-footer a {
    color: var(--mint);
    text-decoration: none;
}

@media (max-width: 640px) {
    .article-shell {
        padding: 0 20px;
    }

    .article-header {
        padding-top: 78px;
    }

    .article-content {
        padding-top: 32px;
    }

    .article-content h2 {
        font-size: 21px;
        margin-top: 40px;
    }

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

    .comparison-row {
        gap: 6px;
        grid-template-columns: 1fr;
    }

    .lead-note,
    .source-note,
    .action-box,
    .warning-box {
        padding: 20px;
    }

    .article-cta {
        padding: 28px 20px;
    }

    .cta-button {
        display: block;
    }

    .cta-button + .cta-button {
        margin: 10px 0 0;
    }
}