/* ==========================================================================
   爆料公社 jwgkkj.com — 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. base — 变量、重置、排版
   -------------------------------------------------------------------------- */
:root {
  --paper: #f7f5f1;
  --card: #ffffff;
  --ink: #23282d;
  --ink-soft: #5b6470;
  --teal: #2f5d62;
  --teal-dark: #24494d;
  --blue: #6b8fa3;
  --green: #7a9a7e;
  --ochre: #b08968;
  --purple: #8d87a8;
  --line: #dcd8d0;
  --line-strong: #c3bdb2;
  --wash: #efece6;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow-head: 0 1px 0 rgba(35, 40, 45, 0.08), 0 6px 18px rgba(35, 40, 45, 0.06);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  --header-h: 72px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body.site-body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

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

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: var(--teal);
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

a:hover,
a:focus-visible {
  color: var(--teal-dark);
}

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

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

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

/* --------------------------------------------------------------------------
   2. layout — 页头、主容器、页脚骨架
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: var(--paper);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 200ms ease;
}

.site-header.is-stuck {
  box-shadow: var(--shadow-head);
}

.header-inner {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--ink);
  flex-shrink: 0;
}

.brand:hover,
.brand:focus-visible {
  color: var(--ink);
}

.brand-name {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0;
}

.brand-slogan {
  font-size: 12px;
  color: var(--ink-soft);
  line-height: 1.4;
}

/* 主导航 */
.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
}

.nav-list > li {
  display: flex;
  align-items: center;
}

.nav-list > li + li::before {
  content: "";
  display: block;
  width: 1px;
  height: 14px;
  background-color: var(--line);
  margin: 0 12px;
}

.nav-list a {
  display: block;
  padding: 8px 4px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.4;
  border-bottom: 2px solid transparent;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--teal);
  border-bottom-color: var(--line-strong);
}

.nav-list a.is-current {
  color: var(--teal);
  font-weight: 600;
  border-bottom-color: var(--teal);
}

/* 汉堡按钮（桌面隐藏） */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--card);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--ink);
  border-radius: 1px;
  transition: transform 180ms ease, opacity 180ms ease;
}

/* 主区域：主内容在左，辅助栏在右 */
.page-layout {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 24px 56px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: start;
}

.site-main {
  min-width: 0;
  width: 100%;
}

.home-main {
  display: flex;
  flex-direction: column;
  gap: 44px;
}

.inner-main {
  display: flex;
  flex-direction: column;
  gap: 32px;
  min-width: 0;
}

/* 页脚 */
.site-footer {
  background-color: var(--wash);
  border-top: 1px solid var(--line);
  margin-top: 24px;
}

.footer-inner {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 40px 24px 28px;
}

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

.footer-group h2 {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.footer-group ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-group a {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.6;
}

.footer-group a:hover,
.footer-group a:focus-visible {
  color: var(--teal);
}

.footer-bottom {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
}

.footer-brand {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.footer-desc {
  font-size: 13px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   3. components — 通用组件
   -------------------------------------------------------------------------- */

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.btn-primary {
  background-color: var(--teal);
  color: #ffffff;
  border-color: var(--teal);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--teal-dark);
  border-color: var(--teal-dark);
  color: #ffffff;
}

.btn-ghost {
  background-color: transparent;
  color: var(--teal);
  border-color: var(--line-strong);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background-color: var(--card);
  border-color: var(--teal);
  color: var(--teal-dark);
}

/* 面包屑 */
.breadcrumb {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 24px 0;
  font-size: 13px;
  color: var(--ink-soft);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.breadcrumb-list li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb-list li + li::before {
  content: "/";
  color: var(--line-strong);
}

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

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--teal);
}

.breadcrumb-sep {
  color: var(--line-strong);
  margin: 0 6px;
}

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

/* 内页标题区 */
.page-header {
  padding-bottom: 16px;
}

.page-title {
  font-size: 34px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink);
  letter-spacing: 0;
}

.page-title-kicker {
  font-size: 13px;
  color: var(--teal);
  font-weight: 600;
  margin-top: 12px;
}

.page-title-lead,
.page-lead,
.page-title-desc {
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.75;
  max-width: 720px;
  margin-top: 12px;
}

.page-title-meta,
.page-meta {
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-title-inner {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.section-mark {
  display: inline-block;
  font-size: 12px;
  color: var(--teal);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  background-color: var(--card);
}

/* 章节标题与引导 */
.section-intro {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.75;
  max-width: 720px;
  margin-top: 10px;
}

.home-main section > h2,
.inner-main section > h2 {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.4;
  position: relative;
  padding-bottom: 12px;
}

.home-main section > h2::after,
.inner-main section > h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 3px;
  border-radius: 2px;
  background-color: var(--teal);
}

/* 色标圆点与标签 */
.tag-dot,
.color-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--ink-soft);
  flex-shrink: 0;
}

.tag-blue .tag-dot,
.color-dot-blue,
.color-tag-blue .color-dot {
  background-color: var(--blue);
}

.tag-green .tag-dot,
.color-dot-green,
.color-tag-green .color-dot {
  background-color: var(--green);
}

.tag-ochre .tag-dot,
.color-dot-ochre,
.color-tag-ochre .color-dot {
  background-color: var(--ochre);
}

.tag-purple .tag-dot,
.color-dot-purple,
.color-tag-purple .color-dot {
  background-color: var(--purple);
}

.color-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background-color: var(--card);
  flex-shrink: 0;
}

.tag {
  display: inline-block;
  font-size: 12px;
  line-height: 1.6;
  padding: 1px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background-color: var(--wash);
  color: var(--ink-soft);
  white-space: nowrap;
}

.tag.tag-blue {
  background-color: #eef3f6;
  border-color: #c8d8e0;
  color: #3f5f70;
}

.tag.tag-green {
  background-color: #eef3ee;
  border-color: #c9d8ca;
  color: #46664a;
}

.tag.tag-ochre {
  background-color: #f6f0e9;
  border-color: #e0cdb8;
  color: #7a5b3d;
}

.tag.tag-purple {
  background-color: #f1eff5;
  border-color: #d3cfe0;
  color: #5d577a;
}

/* 图片与图注 */
figure {
  margin: 0;
}

figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background-color: var(--wash);
  object-fit: cover;
}

figcaption {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.65;
  margin-top: 8px;
}

/* 通用列表 */
.plain-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.plain-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--teal);
}

/* 页内相关链接 */
.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.related-links-label {
  font-size: 13px;
  color: var(--ink-soft);
  font-weight: 600;
}

.related-links-item {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 4px 12px;
  font-size: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--card);
  color: var(--teal);
}

.related-links-item:hover,
.related-links-item:focus-visible {
  border-color: var(--teal);
  color: var(--teal-dark);
}

/* 侧栏 */
.side-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 0;
  position: sticky;
  top: calc(var(--header-h) + 20px);
}

.side-block {
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px 20px;
}

.side-block h2,
.side-block .side-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.side-links,
.side-toc,
.side-toc-list,
.side-link-list,
.side-points,
.toc-list,
.related-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.side-links a,
.side-toc a,
.side-toc-list a,
.side-link-list a,
.side-points a,
.toc-list a,
.related-list a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
  border-bottom: 1px dashed transparent;
}

.side-links a:hover,
.side-toc a:hover,
.side-toc-list a:hover,
.side-link-list a:hover,
.side-points a:hover,
.toc-list a:hover,
.related-list a:hover,
.side-links a:focus-visible,
.side-toc a:focus-visible,
.side-toc-list a:focus-visible,
.side-link-list a:focus-visible,
.side-points a:focus-visible,
.toc-list a:focus-visible,
.related-list a:focus-visible {
  color: var(--teal);
  border-bottom-color: var(--line-strong);
}

.side-note {
  background-color: var(--wash);
  border-left: 3px solid var(--line-strong);
  border-radius: var(--radius-sm);
}

.side-note h2 {
  border-bottom-color: var(--line);
}

.side-note-list,
.side-boundary-list,
.side-note ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.side-note-list li,
.side-boundary-list li,
.side-note ul li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.side-note-list li::before,
.side-boundary-list li::before,
.side-note ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--ochre);
}

/* --------------------------------------------------------------------------
   4. pages — 首页
   -------------------------------------------------------------------------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: 36px;
  align-items: start;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  min-width: 0;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--teal);
  padding: 3px 10px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background-color: var(--card);
}

.hero h1 {
  font-size: 34px;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: 0;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 640px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-points {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  padding-top: 4px;
}

.hero-points li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.hero-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--teal);
}

.hero-visual img {
  aspect-ratio: 4 / 3;
}

/* 服务范围 */
.service-grid > .section-intro {
  margin-bottom: 20px;
}

.service-cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 16px 16px;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.service-card:hover {
  border-color: var(--line-strong);
  box-shadow: 0 2px 10px rgba(35, 40, 45, 0.06);
}

.service-card .tag-dot {
  width: 12px;
  height: 12px;
}

.service-card h3 {
  font-size: 17px;
  line-height: 1.45;
}

.card-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.card-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 4px;
  border-top: 1px dashed var(--line);
}

.card-list li {
  position: relative;
  padding-left: 14px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink);
}

.card-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--line-strong);
}

.card-link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
  padding-top: 6px;
}

.card-link::after {
  content: " →";
  font-weight: 400;
}

.card-link:hover,
.card-link:focus-visible {
  color: var(--teal-dark);
}

.service-figure {
  margin-top: 20px;
}

.service-figure img {
  aspect-ratio: 16 / 6;
}

/* 需求诊断路径 */
.diagnosis-path > .section-intro {
  margin-bottom: 20px;
}

.path-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  counter-reset: path;
}

.path-step {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--teal);
  border-radius: var(--radius);
  padding: 16px;
}

.step-index {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--teal);
  font-variant-numeric: tabular-nums;
}

.path-step h3 {
  font-size: 16px;
  line-height: 1.5;
}

.step-question {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.step-basis {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  padding-top: 6px;
  border-top: 1px dashed var(--line);
}

.step-link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
}

.step-link:hover,
.step-link:focus-visible {
  color: var(--teal-dark);
}

/* 适用场景索引 */
.scenario-index > .section-intro {
  margin-bottom: 20px;
}

.scenario-blocks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.scenario-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  transition: border-color 160ms ease;
}

.scenario-block:hover {
  border-color: var(--line-strong);
}

.scenario-question {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.scenario-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
}

.scenario-link:hover,
.scenario-link:focus-visible {
  color: var(--teal-dark);
}

/* 工作方式时间轴（首页） */
.workflow-timeline > .section-intro {
  margin-bottom: 20px;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 24px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

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

.timeline-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.timeline-index {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--teal);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.timeline-head h3 {
  font-size: 16px;
  line-height: 1.5;
}

.timeline-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.timeline-output {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.timeline-action {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.workflow-note {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.workflow-note a {
  font-weight: 600;
}

/* 方法资料推荐 */
.resource-picks > .section-intro {
  margin-bottom: 20px;
}

.pick-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

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

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

.pick-item h3 {
  font-size: 17px;
  line-height: 1.5;
}

.pick-item h3 a {
  color: var(--ink);
}

.pick-item h3 a:hover,
.pick-item h3 a:focus-visible {
  color: var(--teal);
}

.pick-audience {
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 4px;
}

.pick-reason {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
  margin-top: 6px;
  max-width: 720px;
}

/* 服务支持与边界 */
.support-note > .section-intro {
  margin-bottom: 20px;
}

.support-box {
  background-color: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--teal);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.support-points {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.support-points li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
}

.support-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--teal);
}

.support-link {
  align-self: flex-start;
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
}

.support-link:hover,
.support-link:focus-visible {
  color: var(--teal-dark);
}

.boundary-hint {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  background-color: var(--wash);
  border-left: 3px solid var(--ochre);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
}

/* 合作流程入口 */
.contact-flow > .section-intro {
  margin-bottom: 20px;
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.flow-step {
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.flow-index {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--teal);
  font-variant-numeric: tabular-nums;
}

.flow-step h3 {
  font-size: 16px;
  line-height: 1.5;
}

.flow-step p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.flow-note {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.flow-note a {
  font-weight: 600;
  margin-right: 12px;
}

/* --------------------------------------------------------------------------
   5. pages — 内页共用业务模块
   -------------------------------------------------------------------------- */

/* 服务矩阵页 */
.service-list > .section-intro {
  margin-bottom: 8px;
}

.service-item {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

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

.service-item-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.service-item-head h3 {
  font-size: 19px;
  line-height: 1.45;
}

.service-item-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.service-item-col {
  min-width: 0;
}

.service-item-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
  margin-bottom: 6px;
}

.service-item-col p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.service-item-coop {
  margin-top: 14px;
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  background-color: var(--wash);
  border-radius: var(--radius-sm);
}

.combo-advice > .section-intro {
  margin-bottom: 20px;
}

.combo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.combo-card {
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.combo-card h3 {
  font-size: 16px;
  line-height: 1.5;
}

.combo-scope {
  font-size: 13px;
  color: var(--teal);
  font-weight: 600;
}

.combo-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.not-included > .section-intro {
  margin-bottom: 6px;
}

.not-included-note {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.7;
}

/* 需求诊断页 */
.when-needed > p,
.self-check > p,
.starting-points > p,
.diagnosis-next > p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 720px;
  margin-top: 10px;
}

.card-grid {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

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

.info-card,
.start-card {
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.info-card h3,
.start-card h3 {
  font-size: 16px;
  line-height: 1.5;
}

.info-card p,
.start-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.card-note {
  padding-top: 8px;
  border-top: 1px dashed var(--line);
  font-size: 13px !important;
  color: var(--teal) !important;
}

.content-figure {
  margin-top: 20px;
}

.content-figure img {
  aspect-ratio: 16 / 7;
}

.check-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 20px;
  counter-reset: check;
}

.check-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 0 14px 44px;
  position: relative;
  border-top: 1px solid var(--line);
}

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

.check-item::before {
  counter-increment: check;
  content: counter(check, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 14px;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
  font-variant-numeric: tabular-nums;
}

.check-item h3 {
  font-size: 16px;
  line-height: 1.5;
}

.check-item p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.check-next a {
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
}

.start-fit {
  font-size: 13px !important;
  color: var(--teal) !important;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line);
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  counter-reset: substep;
}

.step-list li {
  position: relative;
  padding-left: 22px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
}

.step-list li::before {
  counter-increment: substep;
  content: counter(substep) ".";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
}

.diagnosis-next {
  padding-top: 4px;
}

.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 16px;
}

.inline-links a {
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
}

/* 适用场景页 */
.scenario-list > .section-intro {
  margin-bottom: 8px;
}

.scenario-list .scenario-block {
  padding: 20px 0;
  background-color: transparent;
  border: none;
  border-top: 1px solid var(--line);
  border-radius: 0;
  gap: 12px;
}

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

.scenario-head {
  display: flex;
  align-items: center;
  gap: 10px;
}

.scenario-head h3 {
  font-size: 19px;
  line-height: 1.45;
}

.scenario-figure {
  margin: 4px 0;
}

.scenario-figure img {
  aspect-ratio: 16 / 7;
}

.scenario-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  max-width: 720px;
}

.scenario-objects {
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.scenario-objects h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
  margin-bottom: 8px;
}

.scenario-objects ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.scenario-objects li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.scenario-objects li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--line-strong);
}

.scenario-difficulty {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.label-inline {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--ochre);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1px 8px;
  margin-right: 8px;
  background-color: var(--card);
}

.scenario-list .scenario-link {
  align-self: flex-start;
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
}

/* 对照表 */
.mapping > .section-intro {
  margin-bottom: 20px;
}

.mapping-table {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--card);
}

.mapping-row {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 3fr) minmax(0, 4fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.mapping-row:first-child {
  border-top: none;
}

.mapping-row > span {
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.7;
  min-width: 0;
}

.mapping-row > span + span {
  border-left: 1px solid var(--line);
}

.mapping-head {
  background-color: var(--wash);
}

.mapping-head > span {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.mapping-scene {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--ink);
}

.mapping-service {
  color: var(--teal);
}

.mapping-reason {
  color: var(--ink-soft);
}

.mapping-note {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.mapping-note a {
  font-weight: 600;
}

/* 不适合承接 */
.not-fit > .section-intro {
  margin-bottom: 16px;
}

.not-fit-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.not-fit-list li {
  background-color: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--ochre);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.not-fit-list strong {
  display: block;
  font-size: 15px;
  color: var(--ink);
  margin-bottom: 2px;
}

.not-fit-tail {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.not-fit-tail a {
  font-weight: 600;
  margin-right: 12px;
}

/* 方法资料页 */
.page-layout .content-col {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.filter-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
}

.filter-tag {
  min-height: 36px;
  padding: 6px 14px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  background-color: var(--paper);
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.filter-tag:hover,
.filter-tag:focus-visible {
  color: var(--teal);
  border-color: var(--teal);
}

.filter-tag.is-active {
  background-color: var(--teal);
  border-color: var(--teal);
  color: #ffffff;
}

.filter-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.view-switch {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.view-btn {
  min-height: 36px;
  padding: 6px 14px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--ink-soft);
  background-color: var(--paper);
}

.view-btn + .view-btn {
  border-left: 1px solid var(--line);
}

.view-btn:hover,
.view-btn:focus-visible {
  color: var(--teal);
}

.view-btn.is-active {
  background-color: var(--card);
  color: var(--teal);
  font-weight: 600;
  box-shadow: inset 0 -2px 0 var(--teal);
}

.filter-reset {
  min-height: 36px;
  padding: 6px 14px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--ink-soft);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-sm);
  background-color: transparent;
}

.filter-reset:hover,
.filter-reset:focus-visible {
  color: var(--ochre);
  border-color: var(--ochre);
}

.resource-figure img {
  aspect-ratio: 16 / 6;
}

.resource-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.resource-item {
  padding: 18px 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

.resource-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.resource-title {
  font-size: 17px;
  line-height: 1.5;
}

.resource-for {
  font-size: 13px;
  color: var(--ink-soft);
}

.resource-premise {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 720px;
}

.resource-digest {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 720px;
}

.resource-link {
  align-self: flex-start;
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
  margin-top: 2px;
}

.resource-link:hover,
.resource-link:focus-visible {
  color: var(--teal-dark);
}

.reading-note {
  padding-top: 4px;
}

.reading-note h2 {
  font-size: 19px;
  padding-bottom: 10px;
}

.reading-note p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 720px;
  margin-top: 10px;
}

.reading-tip {
  background-color: var(--wash);
  border-left: 3px solid var(--teal);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--ink) !important;
  font-size: 14px !important;
}

/* 服务支持页 */
.support-scope > .section-intro,
.delivery-rhythm > .section-intro,
.faq > .section-intro {
  margin-bottom: 20px;
}

.support-figure img {
  aspect-ratio: 16 / 6;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.support-card {
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.support-card h3 {
  font-size: 16px;
  line-height: 1.5;
}

.support-moment {
  font-size: 13px;
  color: var(--teal);
  font-weight: 600;
}

.support-card p:last-child {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* 交付节奏（支持页） */
.delivery-rhythm .timeline {
  border-bottom: 1px solid var(--line);
}

.delivery-rhythm .timeline-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 20px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.delivery-rhythm .timeline-index {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}

.delivery-rhythm .timeline-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.delivery-rhythm .timeline-body h3 {
  font-size: 16px;
  line-height: 1.5;
}

.timeline-output {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.delivery-rhythm .timeline-output li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.delivery-rhythm .timeline-output li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--line-strong);
}

.timeline-comm {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  padding-top: 6px;
  border-top: 1px dashed var(--line);
}

/* FAQ 折叠 */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-item[open] {
  border-color: var(--line-strong);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 400;
  color: var(--teal);
  flex-shrink: 0;
  transition: transform 180ms ease;
}

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

.faq-question:hover,
.faq-question:focus-visible {
  color: var(--teal);
}

.faq-answer {
  padding: 0 16px 14px;
  border-top: 1px solid var(--line);
}

.faq-answer p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  padding-top: 12px;
  max-width: 720px;
}

/* 服务标准页 */
.page-media {
  margin: 0;
}

.page-media img {
  aspect-ratio: 16 / 6;
}

.work-style > .section-intro,
.deliverable-standard > .section-intro,
.collaboration > .section-intro,
.boundaries > .section-intro {
  margin-bottom: 16px;
}

.work-stage {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 24px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

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

.stage-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.stage-index {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--teal);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.stage-head h3 {
  font-size: 16px;
  line-height: 1.5;
}

.stage-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.stage-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stage-actions li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
}

.stage-actions li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--teal);
}

.stage-output {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  padding-top: 6px;
  border-top: 1px dashed var(--line);
}

.standard-list,
.collab-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.standard-item,
.collab-item {
  padding: 14px 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.standard-item:last-child,
.collab-item:last-child {
  border-bottom: 1px solid var(--line);
}

.standard-item h3,
.collab-item h3 {
  font-size: 16px;
  line-height: 1.5;
}

.standard-item p,
.collab-item p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 720px;
}

.standard-check,
.collab-trigger {
  font-size: 13px !important;
  color: var(--teal) !important;
  padding-left: 12px;
  border-left: 2px solid var(--line);
}

.boundary-note {
  background-color: var(--wash);
  border: 1px solid var(--line);
  border-left: 3px solid var(--ochre);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
}

.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.boundary-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.boundary-list li::before {
  content: "×";
  position: absolute;
  left: 0;
  top: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--ochre);
  line-height: 1.75;
}

.boundary-list strong {
  color: var(--ink);
}

.boundary-note-desc {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line-strong);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.boundary-note-desc a {
  font-weight: 600;
}

/* 404 */
.error-main {
  display: flex;
  justify-content: center;
  padding: 72px 24px 96px;
}

.error-panel {
  width: 100%;
  max-width: 640px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--teal);
  border-radius: var(--radius);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.error-code {
  font-family: var(--mono);
  font-size: 40px;
  font-weight: 600;
  line-height: 1;
  color: var(--teal);
  font-variant-numeric: tabular-nums;
}

.error-panel h1 {
  font-size: 26px;
  line-height: 1.4;
}

.error-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.error-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.error-links a {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--teal);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

/* --------------------------------------------------------------------------
   6. responsive — 1024px / 760px / 480px
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .header-inner {
    padding: 0 20px;
    gap: 16px;
  }

  .nav-list > li + li::before {
    margin: 0 8px;
  }

  .nav-list a {
    font-size: 14px;
  }

  .page-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding: 28px 20px 48px;
  }

  .side-col {
    position: static;
    top: auto;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .side-note {
    grid-column: 1 / -1;
  }

  .breadcrumb {
    padding: 14px 20px 0;
  }

  .footer-inner {
    padding: 32px 20px 24px;
  }

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

  .hero {
    grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
    gap: 28px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .timeline-item,
  .work-stage {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 20px;
  }
}

@media (max-width: 760px) {
  :root {
    --header-h: 64px;
  }

  .header-inner {
    padding: 0 16px;
    min-height: var(--header-h);
    gap: 12px;
  }

  .brand-name {
    font-size: 18px;
  }

  .brand-slogan {
    font-size: 11px;
  }

  /* 移动导航：只收起 .nav-list，父容器保持可见 */
  .nav-toggle {
    display: flex;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background-color: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-head);
    padding: 8px 16px 16px;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-list > li {
    width: 100%;
    border-bottom: 1px solid var(--line);
  }

  .nav-list > li + li::before {
    display: none;
  }

  .nav-list > li:last-child {
    border-bottom: none;
  }

  .nav-list a {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 10px 4px;
    font-size: 16px;
    border-bottom: none;
  }

  .nav-list a.is-current {
    border-bottom: none;
    color: var(--teal);
  }

  .breadcrumb {
    padding: 12px 16px 0;
    font-size: 12px;
  }

  .page-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 20px 16px 40px;
  }

  .site-main {
    width: 100%;
  }

  .home-main {
    gap: 32px;
  }

  .inner-main {
    gap: 24px;
  }

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

  .page-title-lead,
  .page-lead,
  .page-title-desc {
    font-size: 15px;
  }

  .home-main section > h2,
  .inner-main section > h2 {
    font-size: 19px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
    padding-bottom: 28px;
  }

  .hero h1 {
    font-size: 26px;
    line-height: 1.4;
  }

  .hero-lead {
    font-size: 15px;
  }

  .hero-actions {
    width: 100%;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
    min-width: 140px;
  }

  .hero-visual img {
    aspect-ratio: 16 / 10;
  }

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

  .service-figure img {
    aspect-ratio: 16 / 9;
  }

  .path-steps,
  .flow-steps,
  .card-grid-3,
  .combo-grid,
  .support-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .scenario-blocks {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .timeline-item,
  .work-stage {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
    padding: 14px 0;
  }

  .timeline-head,
  .stage-head {
    gap: 8px;
  }

  .delivery-rhythm .timeline-item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 12px;
  }

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

  .content-figure img,
  .scenario-figure img,
  .support-figure img,
  .page-media img,
  .resource-figure img {
    aspect-ratio: 16 / 9;
  }

  .check-item {
    padding-left: 38px;
  }

  .mapping-table {
    border: none;
    background-color: transparent;
    overflow: visible;
  }

  .mapping-head {
    display: none;
  }

  .mapping-row {
    display: flex;
    flex-direction: column;
    background-color: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    margin-bottom: 10px;
    overflow: hidden;
  }

  .mapping-row > span {
    padding: 10px 14px;
    border-left: none !important;
  }

  .mapping-row > span + span {
    border-top: 1px solid var(--line);
  }

  .filter-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .filter-actions {
    justify-content: space-between;
  }

  .side-col {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .side-note {
    grid-column: auto;
  }

  .footer-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .related-links {
    gap: 8px 10px;
  }

  .error-main {
    padding: 40px 16px 64px;
  }

  .error-panel {
    padding: 24px 20px;
  }

  .error-code {
    font-size: 32px;
  }

  .error-panel h1 {
    font-size: 22px;
  }

  .error-actions .btn {
    flex: 1 1 auto;
    min-width: 140px;
  }
}

@media (max-width: 480px) {
  .hero-actions .btn,
  .error-actions .btn {
    flex-basis: 100%;
  }

  .filter-actions {
    flex-wrap: wrap;
    gap: 8px;
  }

  .filter-tag {
    min-height: 40px;
    padding: 6px 12px;
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}