/* 沿用已确认的 D02 色彩与阅读语言，会员页独立维护。 */
:root {
  --background: #f7f1ed;
  --paper: #fffdfa;
  --ink: #171513;
  --body: #625d5a;
  --secondary: #716964;
  --accent: #76577f;
  --judgment: #57415e;
  --line: #e4dde3;
  --header: #eae5eb;
  color: var(--ink);
  background: var(--background);
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
  color-scheme: light;
}
* { box-sizing: border-box; letter-spacing: 0; }
body { margin: 0; }
a { color: inherit; text-decoration: none; touch-action: manipulation; }
a:hover { color: var(--accent); }
p, h1, h2, h3, figure, dl, dd { margin: 0; }
ol { list-style: none; padding: 0; margin: 0; }
img { display: block; max-width: 100%; }
[id] { scroll-margin-top: 105px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
[tabindex="-1"]:focus:not(:focus-visible) { outline: none; }
.page-width { width: calc(100% - 112px); max-width: 1480px; margin-inline: auto; }
.site-header { height: 72px; padding: 0 56px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 5; background: var(--background); border-bottom: 1px solid var(--line); }
.wordmark { display: flex; gap: 20px; align-items: center; font-size: 20px; font-weight: 600; }
.wordmark span { border-left: 1px solid var(--line); padding-left: 20px; color: var(--secondary); font-size: 13px; font-weight: 400; }
.contact-link { font-size: 14px; }
.skip-link { position: fixed; top: 10px; left: 10px; transform: translateY(-180%); z-index: 10; background: var(--paper); padding: 15px; }
.skip-link:focus { transform: none; }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) 250px; gap: 52px; align-items: center; padding-block: 60px 66px; }
.case-category { display: flex; flex-wrap: wrap; gap: 12px; font-size: 14px; color: var(--secondary); margin-bottom: 26px; }
h1 { font-size: 48px; line-height: 1.35; font-weight: 550; overflow-wrap: anywhere; }
.hero-lead { font-size: 18px; line-height: 1.9; color: var(--body); margin-top: 22px; max-width: 780px; }
.hero-role { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 16px; font-size: 16px; line-height: 1.9; margin-top: 26px; }
.hero-role > span { color: var(--secondary); font-size: 14px; padding-top: 2px; }
.hero-role p { color: var(--body); }
.hero-art { aspect-ratio: 4 / 5; }
.hero-art img { width: 100%; height: 100%; object-fit: contain; border-radius: 8px; }
.hero-art.is-unavailable { display: grid; align-items: center; color: var(--secondary); font-size: 14px; }
.case-body { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 34px; align-items: start; }
.contents { align-self: stretch; }
.contents-inner { position: sticky; top: 112px; }
.contents-inner > p { color: var(--secondary); font-size: 13px; margin-bottom: 20px; }
.contents nav { display: grid; border-left: 1px solid var(--line); }
.contents nav a { display: flex; align-items: baseline; gap: 10px; padding: 13px 0 13px 12px; margin-left: -1px; border-left: 2px solid transparent; font-size: 14px; color: var(--secondary); }
.contents nav a span { font-size: 11px; }
.contents nav a[aria-current] { border-color: var(--accent); color: var(--judgment); font-weight: 600; }
.reading-surface { min-width: 0; background: var(--paper); padding-inline: 42px; }
.chapter { padding-block: 42px 52px; }
.chapter + .chapter { border-top: 1px solid var(--line); }
.chapter-number { display: block; color: var(--accent); font-size: 12px; margin-bottom: 12px; }
.chapter-heading { margin-bottom: 24px; }
h2 { font-size: 29px; line-height: 1.6; font-weight: 550; }
h3 { font-size: 22px; line-height: 1.65; font-weight: 550; margin-bottom: 16px; }
.chapter p { font-size: 16px; line-height: 1.95; color: var(--body); }
.chapter p + p { margin-top: 16px; }
.chapter .intro { font-size: 17px; }
.subsection { margin-top: 38px; }
.subheading { display: flex; align-items: baseline; gap: 14px; margin-bottom: 18px; }
.subheading > span { flex: 0 0 28px; color: var(--accent); font-size: 15px; }
.subheading h3 { margin: 0; }
.chapter .note { font-size: 13px; line-height: 1.85; color: var(--secondary); margin-top: 20px; }
.chapter .takeaway { margin-top: 24px; color: var(--judgment); font-weight: 500; }
.chapter .practice-note { margin-top: 24px; font-size: 14px; line-height: 1.9; }
.practice-note strong { display: block; margin-bottom: 8px; color: var(--judgment); font-weight: 500; }
.metric-table small { display: block; margin-top: 8px; color: var(--body); font-size: 13px; line-height: 1.8; font-weight: 400; }
.diagnosis-list { display: grid; gap: 22px; margin-top: 24px; counter-reset: diagnosis; }
.diagnosis-list li { padding-left: 34px; position: relative; counter-increment: diagnosis; }
.diagnosis-list li::before { content: counter(diagnosis, decimal-leading-zero); position: absolute; left: 0; top: 5px; color: var(--accent); font-size: 12px; }
.diagnosis-list strong { display: block; color: var(--judgment); font-size: 16px; line-height: 1.9; font-weight: 500; }
.diagnosis-list p { margin-top: 5px; }
.flow-figure { margin-top: 28px; }
figcaption { font-size: 14px; line-height: 1.8; color: var(--judgment); margin-bottom: 18px; }
.process { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; margin-block: 26px; }
.three-step { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.process li { position: relative; min-width: 0; }
.process li + li::before { content: "→"; position: absolute; left: -23px; top: 2px; color: var(--accent); font-size: 16px; }
.process strong { display: block; font-size: 16px; line-height: 1.8; font-weight: 550; color: var(--judgment); }
.process p { margin-top: 8px; font-size: 14px; line-height: 1.85; }
.rule-table { width: 100%; border-collapse: collapse; table-layout: fixed; text-align: left; font-size: 15px; line-height: 1.85; margin-block: 24px; }
.rule-table caption { text-align: left; font-size: 14px; line-height: 1.8; color: var(--judgment); padding-bottom: 14px; }
.rule-table thead th { background: var(--header); color: var(--judgment); font-weight: 500; border-bottom: 1px solid #d6cdd9; }
.rule-table th, .rule-table td { padding: 16px 12px; vertical-align: top; overflow-wrap: anywhere; }
.rule-table tbody th { color: var(--judgment); font-weight: 500; }
.rule-table tbody td { color: var(--body); }
.rule-table tbody tr:not(:last-child) { border-bottom: 1px solid var(--line); }
.relation-map { display: grid; grid-template-columns: minmax(0, 1fr) 24px minmax(0, 1fr) 24px minmax(0, 1fr); gap: 16px; align-items: baseline; margin-bottom: 24px; }
.relation-map strong { font-size: 18px; font-weight: 550; color: var(--judgment); }
.relation-map > span { color: var(--accent); text-align: center; }
.relation-map p { margin-top: 10px; font-size: 14px; }
.decision-record { margin-top: 25px; display: grid; gap: 24px; }
.decision-record > div { display: grid; grid-template-columns: 100px minmax(0, 1fr); gap: 24px; font-size: 16px; line-height: 1.95; }
.decision-record dt { color: var(--judgment); font-weight: 500; }
.decision-record dd { color: var(--body); }
.rule-detail { margin-top: 28px; font-size: 15px; color: var(--judgment); }
.rule-detail summary { cursor: pointer; padding-block: 12px; }
.rule-detail p { margin-top: 14px; }
.case-end { padding-block: 55px; display: grid; grid-template-columns: 184px minmax(0, 1fr); }
.case-end h2 { font-size: 24px; }
.related-links a { display: flex; gap: 20px; justify-content: space-between; padding: 20px 0; border-bottom: 1px solid var(--line); font-size: 18px; }
.related-links strong { font-weight: 500; }
.page-footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; padding-block: 30px 45px; color: var(--secondary); font-size: 13px; border-top: 1px solid var(--line); }
@media (min-width: 1440px) { h1 { font-size: 54px; } }
@media (max-width: 1100px) {
  .page-width { width: calc(100% - 64px); }
  .site-header { padding-inline: 32px; }
  .case-body { grid-template-columns: 140px minmax(0, 1fr); gap: 20px; }
  .reading-surface { padding-inline: 28px; }
  .hero { grid-template-columns: minmax(0, 1fr) 200px; gap: 30px; }
  h1 { font-size: 42px; }
  h2 { font-size: 26px; }
}
@media (max-width: 767px) {
  .page-width { width: calc(100% - 36px); }
  .site-header { padding-inline: 18px; height: 64px; }
  .wordmark { gap: 12px; font-size: 18px; }
  .wordmark span { padding-left: 12px; }
  .hero { grid-template-columns: minmax(0, 1fr); gap: 24px; padding-block: 32px; }
  h1 { font-size: 34px; }
  .hero-art { width: 120px; grid-row: 2; }
  .hero-lead { font-size: 16px; }
  .hero-role { font-size: 14px; grid-template-columns: 62px minmax(0, 1fr); gap: 10px; }
  .case-body { display: block; }
  .contents { margin-bottom: 28px; }
  .contents-inner { position: static; }
  .contents-inner > p { margin-bottom: 10px; }
  .contents nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .reading-surface { padding-inline: 18px; }
  .chapter { padding-block: 30px 36px; }
  h2 { font-size: 24px; }
  h3 { font-size: 20px; }
  .process, .three-step { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .process li + li::before { content: "↓"; position: static; display: block; margin-bottom: 12px; }
  .relation-map { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .relation-map > span { text-align: left; transform: rotate(90deg); width: 24px; }
  .rule-table { font-size: 13px; }
  .rule-table th, .rule-table td { padding: 12px 8px; }
  .decision-record > div { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .case-end { display: block; padding-block: 32px; }
  .case-end h2 { margin-bottom: 12px; }
}
@media print {
  .site-header, .contents, .case-end, .page-footer, .skip-link { display: none; }
  .page-width { width: 100%; }
  .case-body { display: block; }
  .hero { padding-top: 0; }
  .reading-surface { padding: 0; }
  .chapter { break-before: page; border: 0; }
  .rule-table tr { break-inside: avoid; }
}

/* v0.3：身份短行、明确对象职责，避免重复通栏叙述。 */
.chapter > p, .subsection > p { max-width: none; }
.identity-steps { display:grid; gap:20px; margin-top:28px; }
.identity-steps > div { display:grid; grid-template-columns:100px minmax(0,1fr); gap:22px; font-size:16px; line-height:1.9; }
.identity-steps dt { color:var(--judgment); font-weight:500; }
.identity-steps dd { color:var(--body); }
.main-sequence { display:flex; flex-wrap:wrap; gap:14px 26px; margin-top:28px; }
.main-sequence li { display:flex; gap:10px; align-items:baseline; font-size:15px; line-height:1.9; }
.main-sequence span { color:var(--accent); font-size:12px; }
.main-sequence li:not(:last-child)::after { content:"→"; color:var(--accent); margin-left:10px; }
.responsibility-map { display:grid; grid-template-columns:minmax(0,1fr) 72px minmax(0,1.25fr) 72px minmax(0,1fr); gap:16px; align-items:start; margin-block:24px; }
.object-role { display:block; font-size:12px; color:var(--secondary); margin-bottom:10px; }
.responsibility-map h3 { font-size:20px; margin-bottom:10px; }
.responsibility-map p { font-size:14px; }
.association { padding-top:35px; display:grid; gap:6px; text-align:center; color:var(--accent); font-size:11px; }
.association b { font-size:23px; font-weight:400; }
.tag-layer { border-top:2px solid #bba9c1; padding-top:12px; margin-top:-14px; }
@media(max-width:1100px) { .responsibility-map { grid-template-columns:minmax(0,1fr) 42px minmax(0,1.2fr) 42px minmax(0,1fr); gap:12px; } }
@media(max-width:767px) {
 .identity-steps > div { grid-template-columns:1fr; gap:4px; }
 .responsibility-map { grid-template-columns:1fr; gap:16px; }
 .association { padding:0; text-align:left; display:flex; align-items:center; }
 .association b { transform:rotate(90deg); }
 .tag-layer { margin:0; }
}

/* 正文、步骤和表格使用同一内容宽度；不再单独截短段落。 */
.main-sequence { display:flex; flex-wrap:wrap; gap:14px 16px; }
.main-sequence li { display:flex; flex:0 0 auto; align-items:baseline; gap:8px; white-space:nowrap; }
.main-sequence li:not(:last-child)::after { display:inline; margin-left:8px; }
.implementation-steps { counter-reset:implementation; display:grid; gap:26px; margin-top:28px; }
.implementation-steps li { position:relative; padding-left:36px; counter-increment:implementation; }
.implementation-steps li::before { content:counter(implementation,decimal-leading-zero); position:absolute; left:0; top:5px; font-size:12px; color:var(--accent); }
.implementation-steps h3 { font-size:18px; margin-bottom:8px; }
.implementation-steps p { max-width:none; }
.experience-evidence { margin-top:30px; }
.experience-evidence h3 { font-size:19px; }
.review-frame { margin-top:22px; }
.review-frame strong { font-weight:500; color:var(--judgment); }
.rule-table th, .rule-table td { overflow-wrap:normal; word-break:normal; padding:15px 12px; }
@media(max-width:1100px){ .reading-surface{padding-inline:24px;} .rule-table th,.rule-table td{padding:13px 9px;} }
@media(max-width:767px){ .reading-surface{padding-inline:16px;} .rule-table th,.rule-table td{overflow-wrap:anywhere;padding:12px 7px;} }

/* 贡献摘要与正文实践一一对应，保持原阅读宽度。 */
.contribution-summary { display:grid; gap:16px; margin-top:26px; font-size:15px; line-height:1.85; }
.contribution-summary > div { display:grid; grid-template-columns:144px minmax(0,1fr); gap:18px; }
.contribution-summary dt { color:var(--judgment); font-weight:500; }
.contribution-summary dt a { text-decoration:underline; text-decoration-color:var(--line); text-underline-offset:5px; }
.contribution-summary dt a:hover { text-decoration-color:currentColor; }
.contribution-summary dd { color:var(--body); }
@media(max-width:767px) {
  .contribution-summary > div { grid-template-columns:minmax(0,1fr); gap:4px; }
}

/* 案例为通栏证据段，与方法正文区分；不使用卡片边框或阴影。 */
.case-study { margin-top:38px; padding:24px; background:#f3f2f4; }
.chapter .case-study .case-label { color:var(--accent); font-size:13px; line-height:1.6; font-weight:550; margin:0 0 10px; }
.case-study h3 { font-size:21px; margin-bottom:16px; }
.case-study h4 { font-size:17px; line-height:1.8; font-weight:550; color:var(--judgment); margin:28px 0 14px; }
.case-study .decision-record { margin-top:20px; gap:18px; }
.case-study .rule-table { margin-block:22px; }
.case-study > :last-child { margin-bottom:0; }
@media(max-width:767px) {
  .case-study { padding:18px 12px; margin-top:30px; }
  .case-study h3 { font-size:19px; }
}
@media print {
  .case-study { background:#f3f2f4; print-color-adjust:exact; }
}