:root {
  --ink: #12263a;
  --paper: #f7f4ee;
  --card: #ffffff;
  --accent: #b4572e;
  --muted: #5b6b78;
  --line: #ded6c8;
  --serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --shell: 1140px;
  --gap: 48px;
}

/* ============ base ============ */

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  font-weight: 400;
}

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

figure {
  margin: 0;
}

p {
  margin: 0 0 14px;
}

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

a:hover {
  color: var(--accent);
}

h1,
h2,
h3,
h4 {
  font-family: var(--serif);
  font-weight: 600;
  color: var(--ink);
  margin: 0;
  line-height: 1.4;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 17px;
}

ul,
ol,
dl {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

button {
  font-family: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ============ layout ============ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--ink);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.header-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 26px;
}

.site-nav a {
  display: inline-block;
  padding: 20px 0 18px;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.78);
  border-bottom: 2px solid transparent;
}

.site-nav a:hover {
  color: #fff;
  border-bottom-color: var(--accent);
}

.site-nav a.is-current {
  color: #fff;
  border-bottom-color: var(--accent);
}

.brand {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: 0.08em;
  color: #fff;
  white-space: nowrap;
}

.brand:hover {
  color: #fff;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
}

.mobile-drawer {
  background: var(--ink);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.mobile-drawer[hidden] {
  display: none;
}

.mobile-drawer ul {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 8px 24px 16px;
}

.mobile-drawer li + li {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-drawer a {
  display: flex;
  align-items: center;
  min-height: 48px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.82);
}

.mobile-drawer a.is-current {
  color: #fff;
  border-left: 3px solid var(--accent);
  padding-left: 10px;
}

.site-main {
  display: block;
}

.inner-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px 64px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.breadcrumb a {
  color: var(--muted);
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb-sep {
  color: var(--line);
}

.breadcrumb-current {
  color: var(--ink);
}

.page-header {
  padding: 14px 0 22px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 34px;
  line-height: 1.35;
  color: var(--ink);
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: var(--gap);
  align-items: start;
  margin-top: 34px;
}

.content-main,
.main-column,
.layout-main,
.page-content {
  min-width: 0;
}

.content-aside,
.sidebar,
.layout-sidebar,
.page-aside,
.page-sidebar {
  min-width: 0;
}

.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.72);
  margin-top: 40px;
}

.footer-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2.1fr);
  gap: var(--gap);
}

.footer-logo {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: 0.08em;
  color: #fff;
  margin: 0 0 8px;
}

.footer-slogan {
  font-size: 14px;
  color: var(--accent);
  margin: 0 0 12px;
}

.footer-desc {
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  margin: 0;
  max-width: 320px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
}

.footer-group-title {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 6px;
}

.footer-group-note {
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.5);
  margin: 0 0 12px;
}

.footer-group li + li {
  margin-top: 8px;
}

.footer-group a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.78);
}

.footer-group a:hover {
  color: #fff;
}

.footer-bottom {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 16px 24px 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-copyright {
  margin: 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

/* ============ components ============ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 6px;
  font-size: 15px;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: #9c4724;
  color: #fff;
}

.btn-ghost {
  border-color: var(--ink);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.link-more {
  display: inline-block;
  font-size: 14px;
  color: var(--accent);
  border-bottom: 1px solid rgba(180, 87, 46, 0.4);
  padding-bottom: 2px;
}

.link-more:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.figure-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
  padding-left: 12px;
  border-left: 2px solid var(--accent);
}

.section-head {
  margin-bottom: 26px;
}

.section-intro,
.section-lead,
.section-note,
.module-lede,
.group-note {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 760px;
}

.section-more {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  color: var(--accent);
}

.section-foot {
  margin-top: 22px;
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-question {
  position: relative;
  padding: 16px 34px 16px 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 16.5px;
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-family: var(--sans);
  font-size: 20px;
}

.faq-item[open] .faq-question::after {
  content: "–";
}

.faq-answer {
  padding: 0 34px 18px 0;
  font-size: 15px;
  color: var(--muted);
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* ============ pages: home ============ */

.hero {
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 24px 60px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: var(--gap);
  align-items: center;
}

.hero-text {
  min-width: 0;
}

.hero-text h1 {
  font-size: 38px;
  line-height: 1.32;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  color: var(--muted);
  max-width: 520px;
}

.hero-facts {
  margin: 26px 0 0;
  border-top: 1px solid var(--line);
}

.hero-facts .fact-item {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}

.fact-label {
  color: var(--muted);
}

.fact-value {
  color: var(--ink);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.hero-figure {
  min-width: 0;
}

.hero-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.services-overview,
.method-rhythm,
.scenario-table,
.prep-check,
.glossary-peek,
.faq-preview {
  border-bottom: 1px solid var(--line);
}

.section-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 24px;
}

.services-overview .section-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: var(--gap);
  align-items: start;
}

.service-list {
  border-top: 1px solid var(--line);
}

.service-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.service-item .service-index {
  display: block;
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 6px;
}

.service-item .service-name {
  margin-bottom: 6px;
}

.service-deliver {
  margin: 0;
  font-size: 14.5px;
  color: var(--muted);
}

.stage-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}

.stage-step {
  padding: 20px 20px 20px 0;
  border-right: 1px solid var(--line);
  min-width: 0;
}

.stage-step:last-child {
  border-right: 0;
}

.stage-step + .stage-step {
  padding-left: 20px;
}

.stage-step .stage-index {
  display: block;
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 8px;
}

.stage-step .stage-name {
  margin-bottom: 8px;
}

.stage-step .stage-output {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.scenario-rows {
  border-top: 1px solid var(--line);
}

.scenario-row {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 32px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.scenario-left,
.scenario-right {
  min-width: 0;
}

.scenario-row .scenario-name {
  margin-bottom: 6px;
}

.scenario-fit {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.scenario-angle {
  margin: 0 0 8px;
  font-size: 15px;
}

.scenario-combo {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.prep-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--gap);
  align-items: start;
}

.prep-col,
.check-col {
  min-width: 0;
}

.prep-list,
.check-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.prep-item,
.check-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  color: var(--muted);
}

.check-col .link-more {
  margin-top: 18px;
}

.glossary-columns {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: var(--gap);
  align-items: start;
}

.glossary-figure {
  min-width: 0;
}

.glossary-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.glossary-text {
  min-width: 0;
}

.term-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.term-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.term-list .term-name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 15.5px;
  color: var(--ink);
  margin-bottom: 4px;
}

.term-list .term-desc {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.glossary-text .link-more {
  margin-top: 18px;
}

/* ============ pages: inner shared ============ */

.page-hero {
  padding: 26px 0 24px;
  border-bottom: 1px solid var(--line);
}

.page-hero-inner {
  max-width: 760px;
}

.page-hero-lead,
.page-hero-desc,
.page-title-lead,
.page-lede {
  margin: 0 0 10px;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--ink);
}

.page-hero-note,
.page-hero-meta,
.page-title-meta,
.page-note,
.page-meta {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-head {
  padding: 26px 0 24px;
  border-bottom: 1px solid var(--line);
}

.content-media img,
.content-figure img,
.faq-figure img,
.method-figure img,
.module-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.content-media,
.content-figure,
.faq-figure,
.method-figure,
.module-figure {
  margin: 22px 0;
}

.content-media-inline {
  margin: 20px 0 0;
}

/* ============ pages: services ============ */

.module {
  padding-top: 30px;
}

.module + .module {
  margin-top: 34px;
  border-top: 1px solid var(--line);
}

.module-lede {
  margin-bottom: 8px;
}

.service-item-head {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  grid-template-areas:
    "index name"
    "index fit";
  gap: 0 16px;
  align-items: baseline;
  padding: 24px 0 12px;
  border-top: 1px solid var(--line);
}

.service-item-head .service-index {
  grid-area: index;
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.service-item-head h3 {
  grid-area: name;
  margin-bottom: 4px;
}

.service-item-head .service-fit {
  grid-area: fit;
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.service-item-body {
  padding-left: 60px;
}

.service-item-body > p {
  max-width: 640px;
}

.service-facts {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 8px 20px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 14.5px;
}

.service-facts dt {
  color: var(--muted);
}

.service-facts dd {
  margin: 0;
  color: var(--ink);
  min-width: 0;
}

.scope-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  margin-top: 18px;
}

.scope-col {
  min-width: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px 22px;
}

.scope-col h3 {
  margin-bottom: 12px;
}

.scope-accept h3 {
  color: var(--ink);
}

.scope-decline h3 {
  color: var(--accent);
}

.scope-list li {
  position: relative;
  padding: 8px 0 8px 18px;
  font-size: 14.5px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.scope-list li:last-child {
  border-bottom: 0;
}

.scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.scope-tail {
  margin: 20px 0 0;
  font-size: 14.5px;
  color: var(--muted);
}

.scope-tail a {
  color: var(--accent);
  margin-right: 14px;
}

.aside-block + .aside-block {
  margin-top: 26px;
}

.aside-title,
.sidebar-title {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin: 0 0 10px;
}

.aside-toc,
.sidebar-list,
.sidebar-toc ul,
.sidebar-nav ul,
.sidebar-links ul,
.sidebar-related ul,
.aside-nav ul {
  border-top: 1px solid var(--line);
}

.aside-toc li,
.sidebar-list li,
.sidebar-toc li,
.sidebar-nav li,
.sidebar-links li,
.sidebar-related li,
.aside-nav li {
  border-bottom: 1px solid var(--line);
}

.aside-toc a,
.sidebar-list a,
.sidebar-toc a,
.sidebar-nav a,
.sidebar-links a,
.sidebar-related a,
.aside-nav a {
  display: block;
  padding: 10px 0;
  font-size: 14px;
  color: var(--muted);
}

.aside-toc a:hover,
.sidebar-list a:hover,
.sidebar-toc a:hover,
.sidebar-nav a:hover,
.sidebar-links a:hover,
.sidebar-related a:hover,
.aside-nav a:hover {
  color: var(--accent);
}

.module-related {
  max-width: var(--shell);
  margin: 44px auto 0;
  padding: 0 24px;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 18px;
}

.related-item {
  min-width: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 20px;
}

.related-item a {
  display: block;
}

.related-item .related-name {
  display: block;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 6px;
}

.related-item .related-desc {
  display: block;
  font-size: 14px;
  color: var(--muted);
}

/* ============ pages: method ============ */

.method-stages {
  padding-top: 8px;
}

.method-stages > h2 {
  margin-bottom: 8px;
}

.method-stages .section-lead {
  margin-bottom: 6px;
}

.stage-block {
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.stage-block:first-of-type {
  margin-top: 18px;
}

.stage-head {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
}

.stage-head .stage-num {
  margin: 0;
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.stage-body {
  padding-left: 88px;
}

.stage-body > p {
  max-width: 640px;
}

.stage-meta {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 8px 20px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 14.5px;
}

.stage-meta dt {
  color: var(--muted);
}

.stage-meta dd {
  margin: 0;
  min-width: 0;
}

.method-prepare {
  margin-top: 34px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.prepare-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.prepare-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.prepare-item h3 {
  margin-bottom: 6px;
}

.prepare-item p {
  margin: 0;
  font-size: 14.5px;
  color: var(--muted);
  max-width: 660px;
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.related-links-label {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.related-links-item {
  font-size: 14.5px;
  color: var(--accent);
  border-bottom: 1px solid rgba(180, 87, 46, 0.4);
  padding-bottom: 2px;
}

.related-links-item:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ============ pages: scenarios ============ */

.scenario-list {
  padding-top: 8px;
}

.scenario-list > h2 {
  margin-bottom: 8px;
}

.scenario-item {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 32px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.scenario-item:last-of-type {
  border-bottom: 1px solid var(--line);
}

.scenario-item-main,
.scenario-item-angle {
  min-width: 0;
}

.scenario-item-main h3 {
  margin-bottom: 8px;
}

.scenario-item-main p {
  margin: 0;
  font-size: 14.5px;
  color: var(--muted);
}

.angle-label {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.scenario-item-angle li {
  position: relative;
  padding: 6px 0 6px 16px;
  font-size: 14.5px;
  color: var(--ink);
}

.scenario-item-angle li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.scenario-match {
  margin-top: 34px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.match-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 18px;
  font-size: 14.5px;
}

.match-table caption {
  text-align: left;
  font-size: 13.5px;
  color: var(--muted);
  padding-bottom: 10px;
}

.match-table th,
.match-table td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  min-width: 0;
}

.match-table thead th {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--muted);
  border-bottom: 1px solid var(--ink);
}

.match-table tbody th {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
  width: 32%;
}

.section-footnote {
  margin: 18px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.section-footnote a {
  color: var(--accent);
  margin-right: 14px;
}

.related-entry {
  max-width: var(--shell);
  margin: 44px auto 0;
  padding: 0 24px;
}

.related-entry .related-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.related-entry .related-list li {
  min-width: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 20px;
}

.related-entry .related-list a {
  display: block;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 6px;
}

.related-entry .related-list p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

/* ============ pages: risks ============ */

.risk-block {
  padding-top: 30px;
}

.risk-block + .risk-block {
  margin-top: 34px;
  border-top: 1px solid var(--line);
}

.risk-block > h2 {
  margin-bottom: 6px;
}

.risk-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
  counter-reset: risk;
}

.risk-item {
  position: relative;
  padding: 18px 0 18px 46px;
  border-bottom: 1px solid var(--line);
  counter-increment: risk;
}

.risk-item::before {
  content: counter(risk, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 20px;
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.risk-item h3 {
  margin-bottom: 6px;
}

.risk-item p {
  margin: 0;
  font-size: 14.5px;
  color: var(--muted);
  max-width: 660px;
}

.redline-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.redline-item {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
  gap: 28px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.redline-item h3 {
  margin: 0;
}

.redline-item p {
  margin: 0;
  font-size: 14.5px;
  color: var(--muted);
}

.disclosure-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.disclosure-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.disclosure-item h3 {
  margin-bottom: 6px;
}

.disclosure-item p {
  margin: 0;
  font-size: 14.5px;
  color: var(--muted);
  max-width: 660px;
}

.related-block {
  max-width: var(--shell);
  margin: 44px auto 0;
  padding: 0 24px;
}

.related-block .related-list {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.related-block .related-list li {
  min-width: 0;
  border-top: 2px solid var(--accent);
  padding-top: 14px;
}

.related-block .related-list a {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 15.5px;
}

/* ============ pages: glossary ============ */

.glossary-group {
  padding-top: 30px;
}

.glossary-group + .glossary-group {
  margin-top: 30px;
  border-top: 1px solid var(--line);
}

.glossary-group > h2 {
  margin-bottom: 6px;
}

.term-entry {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.term-entry:first-of-type {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.term-entry .term-name {
  margin: 0;
}

.term-body {
  min-width: 0;
}

.term-body p {
  margin: 0 0 8px;
  font-size: 14.5px;
  color: var(--muted);
}

.term-body .term-guide {
  margin: 0;
  font-size: 13.5px;
  color: var(--accent);
}

.term-body .term-guide a {
  color: var(--accent);
  border-bottom: 1px solid rgba(180, 87, 46, 0.4);
}

.related-section {
  max-width: var(--shell);
  margin: 44px auto 0;
  padding: 0 24px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-top: 18px;
}

.related-card {
  min-width: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 20px;
}

.related-card h3 {
  margin-bottom: 8px;
}

.related-card p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

/* ============ pages: faq ============ */

.faq-section {
  padding-top: 30px;
}

.faq-section + .faq-section {
  margin-top: 34px;
  border-top: 1px solid var(--line);
}

.faq-section > h2 {
  margin-bottom: 6px;
}

.faq-section .faq-list,
.faq-section details:first-of-type {
  margin-top: 18px;
}

.related-section .related-list {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.related-section .related-list li {
  min-width: 0;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.related-section .related-list a {
  display: block;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 15.5px;
  margin-bottom: 6px;
}

.related-section .related-list p {
  margin: 0;
  font-size: 13.5px;
  color: var(--muted);
}

/* ============ pages: 404 ============ */

.error-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px 72px;
}

.error-hero {
  padding: 70px 0 46px;
  border-bottom: 1px solid var(--line);
}

.error-code {
  margin: 0 0 12px;
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.3em;
  color: var(--accent);
}

.error-hero h1 {
  font-size: 34px;
  line-height: 1.35;
  margin-bottom: 14px;
}

.error-lead {
  max-width: 560px;
  color: var(--muted);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.error-links {
  padding-top: 40px;
}

.error-link-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.error-link-list a {
  display: block;
  min-height: 44px;
  font-size: 15px;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
}

.error-link-list a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ============ responsive ============ */

@media (max-width: 900px) {
  .header-inner {
    height: 56px;
    padding: 0 18px;
  }

  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .inner-main {
    padding: 0 18px 52px;
  }

  .breadcrumb {
    padding-top: 18px;
  }

  .page-header {
    padding: 12px 0 18px;
  }

  .page-title {
    font-size: 26px;
    line-height: 1.4;
  }

  .page-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 34px;
    margin-top: 26px;
  }

  .content-aside,
  .sidebar,
  .layout-sidebar,
  .page-aside,
  .page-sidebar {
    border-top: 1px solid var(--line);
    padding-top: 24px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding: 40px 18px 44px;
  }

  .hero-text h1 {
    font-size: 28px;
  }

  .section-inner {
    padding: 42px 18px;
  }

  .services-overview .section-inner,
  .prep-columns,
  .glossary-columns,
  .scope-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }

  .stage-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stage-step {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 18px 0;
  }

  .stage-step + .stage-step {
    padding-left: 0;
  }

  .stage-step:nth-child(odd) {
    padding-right: 20px;
    border-right: 1px solid var(--line);
  }

  .scenario-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .scenario-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .redline-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .term-entry {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .service-item-head {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 0 12px;
  }

  .service-item-body,
  .stage-body {
    padding-left: 0;
  }

  .stage-head {
    grid-template-columns: 60px minmax(0, 1fr);
  }

  .related-list,
  .related-entry .related-list,
  .related-block .related-list,
  .related-grid,
  .related-section .related-list,
  .error-link-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .module-related,
  .related-entry,
  .related-block,
  .related-section,
  .error-main {
    padding: 0 18px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding: 40px 18px 28px;
  }

  .footer-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .footer-bottom {
    padding: 16px 18px 26px;
  }

  .error-hero {
    padding: 52px 0 36px;
  }

  .error-hero h1 {
    font-size: 26px;
  }
}

@media (max-width: 640px) {
  .hero-facts .fact-item {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 12px;
  }

  .stage-strip {
    grid-template-columns: minmax(0, 1fr);
  }

  .stage-step:nth-child(odd) {
    padding-right: 0;
    border-right: 0;
  }

  .service-facts,
  .stage-meta {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .service-facts dt,
  .stage-meta dt {
    margin-top: 8px;
  }

  .match-table th,
  .match-table td {
    padding: 10px 8px;
  }

  .match-table tbody th {
    width: 38%;
  }

  .related-list,
  .related-entry .related-list,
  .related-block .related-list,
  .related-grid,
  .related-section .related-list,
  .error-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-nav {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-actions .btn,
  .error-actions .btn {
    flex: 1 1 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}