.article-page { background: #fff; }
.article-page .shell { width: min(calc(100% - 48px), 1120px); }

.article-header { border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); }
.article-header__inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.article-header__links { display: flex; align-items: center; gap: 24px; }
.article-header__links > a:not(.button) { color: var(--ink-2); font-size: 13px; font-weight: 750; text-decoration: none; }
.article-header__links > a:not(.button):hover { color: var(--blue); }

.article-main { padding-bottom: 100px; }
.article-breadcrumb { padding: 26px 0; color: var(--muted); font-size: 12px; }
.article-breadcrumb ol { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.article-breadcrumb li + li::before { content: "/"; margin-right: 8px; color: var(--line-dark); }
.article-breadcrumb a { color: var(--blue); text-decoration: none; }

.article-hero { padding: 58px 0 68px; border-bottom: 1px solid var(--line); background: var(--paper); }
.article-hero__inner { display: grid; grid-template-columns: minmax(0,1fr) 310px; align-items: end; gap: 70px; }
.article-kicker { margin: 0 0 18px; color: var(--blue); font-size: 11px; font-weight: 900; letter-spacing: .13em; }
.article-hero h1 { max-width: 760px; margin: 0; font-size: clamp(44px,5.5vw,70px); line-height: 1.08; letter-spacing: -.065em; word-break: keep-all; }
.article-deck { max-width: 750px; margin: 26px 0 0; color: var(--muted); font-size: 18px; line-height: 1.75; word-break: keep-all; }
.article-meta { padding: 24px 26px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.article-meta dl { display: grid; grid-template-columns: 72px 1fr; gap: 11px 15px; margin: 0; font-size: 12px; }
.article-meta dt { color: var(--muted); }
.article-meta dd { margin: 0; color: var(--ink-2); font-weight: 750; }

.article-layout { display: grid; grid-template-columns: minmax(0,760px) 240px; justify-content: space-between; gap: 70px; padding-top: 70px; }
.article-body { min-width: 0; }
.article-body > p, .article-body li { color: #34445b; font-size: 16px; line-height: 1.9; word-break: keep-all; }
.article-body > p { margin: 0 0 24px; }
.article-body h2 { margin: 72px 0 24px; padding-top: 4px; font-size: clamp(30px,3.5vw,42px); line-height: 1.25; letter-spacing: -.05em; word-break: keep-all; }
.article-body h3 { margin: 36px 0 14px; font-size: 22px; letter-spacing: -.035em; }
.article-body strong { color: var(--ink); }
.article-body a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.article-body code { padding: 2px 6px; border: 1px solid #d8e1ef; border-radius: 4px; color: #0d42b9; background: #f2f6ff; font-size: .88em; }

.direct-answer { margin: 0 0 50px; padding: 28px 30px; border-left: 5px solid var(--blue); border-radius: 0 10px 10px 0; background: var(--blue-soft); }
.direct-answer strong { display: block; margin-bottom: 9px; color: var(--blue); font-size: 13px; }
.direct-answer p { margin: 0; color: var(--ink-2); font-size: 17px; font-weight: 700; line-height: 1.75; word-break: keep-all; }

.boundary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 30px 0 10px; }
.boundary-card { padding: 25px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); }
.boundary-card--human { border-color: #ecc0c0; background: var(--red-soft); }
.boundary-card h3 { margin: 0 0 14px; color: var(--green); font-size: 18px; }
.boundary-card--human h3 { color: var(--red); }
.boundary-card ul { margin: 0; padding-left: 20px; }
.boundary-card li { margin: 7px 0; font-size: 14px; line-height: 1.7; }

.article-table-wrap { overflow-x: auto; margin: 30px 0 16px; border: 1px solid var(--line); border-radius: 10px; }
.article-table { width: 100%; border-collapse: collapse; min-width: 660px; background: #fff; }
.article-table th, .article-table td { padding: 16px 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; font-size: 13px; line-height: 1.65; }
.article-table th { color: var(--ink); background: var(--paper); font-size: 12px; }
.article-table tr:last-child td { border-bottom: 0; }
.article-table td:first-child { color: var(--ink); font-weight: 800; }

.process-list { margin: 28px 0 0; padding: 0; counter-reset: process; list-style: none; }
.process-list li { position: relative; margin: 0; padding: 24px 0 24px 66px; border-top: 1px solid var(--line); }
.process-list li:last-child { border-bottom: 1px solid var(--line); }
.process-list li::before { counter-increment: process; content: counter(process, decimal-leading-zero); position: absolute; left: 0; top: 25px; color: var(--blue); font-family: ui-monospace,SFMono-Regular,Consolas,monospace; font-size: 13px; font-weight: 900; }
.process-list strong { display: block; margin-bottom: 5px; }

.scope-note { margin: 38px 0; padding: 28px 30px; border: 1px solid #edc4c4; border-radius: 10px; background: var(--red-soft); }
.scope-note h3 { margin: 0 0 12px; color: var(--red); }
.scope-note p { margin: 0; color: #653737; font-size: 14px; line-height: 1.8; }

.article-checklist { display: grid; gap: 10px; margin: 24px 0; padding: 0; list-style: none; }
.article-checklist li { position: relative; padding: 15px 18px 15px 48px; border: 1px solid var(--line); border-radius: 8px; background: #fff; font-size: 14px; }
.article-checklist li::before { content: "✓"; position: absolute; left: 18px; top: 15px; color: var(--green); font-weight: 900; }

.article-cta { margin-top: 62px; padding: 34px; border-radius: 12px; color: #fff; background: var(--navy-panel); }
.article-cta h2 { margin: 0 0 13px; padding: 0; color: #fff; font-size: 30px; }
.article-cta p { margin: 0; color: #aebbd0; font-size: 14px; line-height: 1.75; }
.article-cta__actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }

.article-sources { margin-top: 58px; padding-top: 28px; border-top: 1px solid var(--line); }
.article-sources h2 { margin: 0 0 16px; padding: 0; font-size: 22px; }
.article-sources ol { margin: 0; padding-left: 21px; }
.article-sources li { margin: 9px 0; font-size: 13px; }

.article-toc { position: sticky; top: 28px; align-self: start; padding: 22px; border-left: 1px solid var(--line); }
.article-toc strong { display: block; margin-bottom: 12px; color: var(--ink); font-size: 12px; }
.article-toc ol { display: grid; gap: 11px; margin: 0; padding: 0; list-style: none; }
.article-toc a { color: var(--muted); font-size: 12px; line-height: 1.5; text-decoration: none; }
.article-toc a:hover { color: var(--blue); }

@media (max-width: 900px) {
  .article-hero__inner, .article-layout { grid-template-columns: 1fr; }
  .article-hero__inner { gap: 36px; }
  .article-meta { max-width: 420px; }
  .article-toc { position: static; grid-row: 1; padding: 22px 0; border-left: 0; border-block: 1px solid var(--line); }
  .article-toc ol { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 620px) {
  .article-page .shell { width: min(calc(100% - 28px), 1120px); }
  .article-header__inner { min-height: 64px; }
  .article-header__links > a:not(.button) { display: none; }
  .article-header__links .button { min-height: 38px; padding: 8px 12px; font-size: 11px; }
  .article-hero { padding: 40px 0 48px; }
  .article-hero h1 { font-size: 42px; }
  .article-deck { font-size: 16px; }
  .article-layout { gap: 38px; padding-top: 45px; }
  .article-body > p, .article-body li { font-size: 15px; }
  .boundary-grid { grid-template-columns: 1fr; }
  .direct-answer, .scope-note, .article-cta { padding: 23px; }
  .article-toc ol { grid-template-columns: 1fr; }
}