/* ==========================================================================
   nana 动漫 · 角色设定与IP视觉创作工作室官网
   全站样式表 v1.0
   视觉方向：数字出版风 — 纸白底色 / 墨色衬线标题 / 朱红强调 / 期号与档案编号
   ========================================================================== */

/* --------------------------------------------------------------------------
   base / 基础
   -------------------------------------------------------------------------- */
:root {
  --color-bg: #F6F2EA;
  --color-ink: #191714;
  --color-accent: #C8402B;
  --color-muted: #7A6A5A;
  --color-line: #E5DCCB;
  --color-paper: #FFFFFF;
  --color-paper-soft: #F0EBE0;

  --font-serif: Georgia, "Songti SC", "SimSun", serif;
  --font-sans: system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;

  --container: 1140px;
  --container-narrow: 960px;
  --gutter: 24px;
  --radius: 6px;
  --radius-sm: 4px;

  --header-h: 72px;
  --transition: 0.2s ease;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-ink);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-ink);
}

h1 {
  font-size: 2.25rem;
  letter-spacing: 0.02em;
}

h2 {
  font-size: 1.5rem;
  letter-spacing: 0.02em;
}

h3 {
  font-size: 1.125rem;
  letter-spacing: 0.01em;
}

p {
  margin-bottom: 0.75rem;
}

strong {
  font-weight: 600;
}

/* 通用容器 */
.site-main {
  min-height: 60vh;
}

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* --------------------------------------------------------------------------
   layout / 页头与导航
   -------------------------------------------------------------------------- */
.site-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.brand-mark {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: 0.04em;
  white-space: nowrap;
  flex-shrink: 0;
}

.brand-mark:hover {
  color: var(--color-accent);
}

.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 0.9375rem;
  color: var(--color-ink);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background-color var(--transition);
}

.nav-link:hover {
  color: var(--color-accent);
  background-color: rgba(200, 64, 43, 0.06);
}

.nav-item.is-current .nav-link {
  color: var(--color-accent);
  font-weight: 600;
}

.nav-item.is-current .nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background-color: var(--color-accent);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  color: var(--color-accent);
  font-size: 0.9375rem;
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background-color var(--transition), color var(--transition);
}

.header-cta:hover {
  background-color: var(--color-accent);
  color: #fff;
}

.header-cta::before {
  content: "✉";
  font-size: 0.875rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.nav-toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-ink);
  transition: transform var(--transition), opacity var(--transition);
}

/* --------------------------------------------------------------------------
   layout / 页脚
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-paper-soft);
  border-top: 1px solid var(--color-line);
  margin-top: 72px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px var(--gutter) 24px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
}

.footer-heading {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink);
  margin-bottom: 14px;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--color-muted);
}

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

.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px var(--gutter) 24px;
  border-top: 1px solid var(--color-line);
}

.copyright {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin: 0;
}

/* --------------------------------------------------------------------------
   layout / 面包屑与页面标题区
   -------------------------------------------------------------------------- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

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

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

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

.breadcrumb-current {
  color: var(--color-ink);
  font-weight: 500;
}

.page-header {
  padding: 28px 0 32px;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 40px;
}

.page-description {
  font-family: var(--font-serif);
  font-size: 0.875rem;
  color: var(--color-accent);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.page-title {
  font-size: 2rem;
  margin-bottom: 10px;
}

.page-lead {
  font-size: 1rem;
  color: var(--color-muted);
  max-width: 720px;
  margin: 0;
}

/* --------------------------------------------------------------------------
   components / 通用区块标题
   -------------------------------------------------------------------------- */
.section-heading {
  margin-bottom: 28px;
}

.section-kicker {
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  color: var(--color-accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.section-title {
  font-size: 1.625rem;
  margin-bottom: 8px;
}

.section-note {
  font-size: 0.9375rem;
  color: var(--color-muted);
  max-width: 640px;
}

/* 通用 section 间距 */
.site-main > section {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
}

.site-main > section:last-child {
  border-bottom: none;
}

/* --------------------------------------------------------------------------
   components / 按钮
   -------------------------------------------------------------------------- */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 500;
  min-height: 44px;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

.btn-primary {
  background-color: var(--color-accent);
  color: #fff;
  border: 1px solid var(--color-accent);
}

.btn-primary:hover {
  background-color: #a83220;
  border-color: #a83220;
  color: #fff;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-line);
}

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

/* --------------------------------------------------------------------------
   components / 折叠问答
   -------------------------------------------------------------------------- */
.faq-item {
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background-color: var(--color-paper);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9375rem;
  list-style: none;
  transition: background-color var(--transition);
}

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

.faq-item summary::after {
  content: "+";
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item[open] summary {
  background-color: var(--color-paper-soft);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item summary:hover {
  background-color: var(--color-paper-soft);
}

.faq-item p {
  padding: 0 20px 16px;
  font-size: 0.9375rem;
  color: var(--color-muted);
  margin: 0;
}

/* --------------------------------------------------------------------------
   components / 图片与媒体
   -------------------------------------------------------------------------- */
figure {
  margin: 0;
}

figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}

figcaption {
  font-size: 0.8125rem;
  color: var(--color-muted);
  padding-top: 8px;
  text-align: center;
}

.content-media {
  margin-bottom: 24px;
}

.content-media-inline {
  max-width: 100%;
}

/* --------------------------------------------------------------------------
   components / 文本链接
   -------------------------------------------------------------------------- */
.text-link {
  display: inline-block;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-accent);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

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

/* --------------------------------------------------------------------------
   components / 相关链接
   -------------------------------------------------------------------------- */
.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 24px 0;
  border-top: 1px solid var(--color-line);
  margin-top: 48px;
}

.related-links-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-ink);
}

.related-links-item {
  font-size: 0.875rem;
  color: var(--color-muted);
}

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

/* --------------------------------------------------------------------------
   pages / 首页 — 封面专题区
   -------------------------------------------------------------------------- */
.home-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.home-main > section {
  border-bottom: 1px solid var(--color-line);
}

.cover-hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0 64px;
  border-bottom: none;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.issue-number {
  font-family: var(--font-serif);
  font-size: 0.9375rem;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.hero-title {
  font-size: 2.75rem;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.hero-lead {
  font-size: 1.0625rem;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-figure {
  position: relative;
}

.hero-figure img {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(25, 23, 20, 0.08);
}

/* --------------------------------------------------------------------------
   pages / 首页 — 栏目目录索引条
   -------------------------------------------------------------------------- */
.section-index {
  padding: 40px 0;
}

.index-list {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}

.index-item a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 12px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  font-size: 0.9375rem;
  color: var(--color-ink);
  transition: border-color var(--transition), transform var(--transition);
}

.index-item a:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.index-num {
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  color: var(--color-accent);
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   pages / 首页 — 服务名录表
   -------------------------------------------------------------------------- */
.service-directory {
  padding: 48px 0;
}

.directory-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.directory-row {
  display: grid;
  grid-template-columns: 1.2fr 1.4fr 1.4fr 0.8fr;
  border-bottom: 1px solid var(--color-line);
  transition: background-color var(--transition);
}

.directory-row:last-child {
  border-bottom: none;
}

.directory-row:hover {
  background-color: var(--color-paper-soft);
}

.directory-head {
  background-color: var(--color-paper-soft);
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.04em;
}

.directory-row span {
  padding: 16px 20px;
  font-size: 0.9375rem;
  display: flex;
  align-items: center;
}

.directory-head span {
  font-size: 0.8125rem;
  text-transform: uppercase;
  color: var(--color-muted);
}

.col-service {
  font-weight: 600;
}

.col-entry a {
  font-size: 0.875rem;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   pages / 首页 — 项目领域速览
   -------------------------------------------------------------------------- */
.fields-preview {
  padding: 48px 0;
}

.fields-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.field-card {
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color var(--transition), transform var(--transition);
}

.field-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.field-name {
  font-size: 1.125rem;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-line);
  position: relative;
}

.field-name::before {
  content: attr(data-index);
  font-family: var(--font-serif);
  font-size: 0.75rem;
  color: var(--color-accent);
  display: block;
  margin-bottom: 4px;
}

.field-desc {
  font-size: 0.875rem;
  color: var(--color-muted);
  flex: 1;
  margin: 0;
}

.field-link {
  font-size: 0.875rem;
  font-weight: 500;
  align-self: flex-start;
}

.fields-figure {
  margin-bottom: 16px;
}

.fields-figure img {
  aspect-ratio: 21 / 6;
  object-fit: cover;
}

.fields-more {
  text-align: right;
}

.fields-more a {
  font-size: 0.875rem;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   pages / 首页 — 创作观察摘要
   -------------------------------------------------------------------------- */
.observations-preview {
  padding: 48px 0;
}

.observations-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 20px;
}

.observation-item {
  background-color: var(--color-paper);
  border-left: 3px solid var(--color-accent);
  padding: 20px 20px 16px;
  border-radius: 0 var(--radius) var(--radius) 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.observation-title {
  font-size: 1.0625rem;
}

.observation-summary {
  font-size: 0.875rem;
  color: var(--color-muted);
  flex: 1;
  margin: 0;
}

.observation-link {
  font-size: 0.8125rem;
  font-weight: 500;
  align-self: flex-start;
}

.observations-more {
  text-align: right;
}

.observations-more a {
  font-size: 0.875rem;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   pages / 首页 — 流程排期简表
   -------------------------------------------------------------------------- */
.process-preview {
  padding: 48px 0;
}

.process-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.process-step {
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}

.step-num {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.step-name {
  font-size: 1.0625rem;
}

.step-action {
  font-size: 0.875rem;
  color: var(--color-muted);
  flex: 1;
  margin: 0;
}

.step-party {
  font-size: 0.8125rem;
  color: var(--color-muted);
  display: block;
}

.step-link {
  font-size: 0.8125rem;
  font-weight: 500;
  align-self: flex-start;
}

/* --------------------------------------------------------------------------
   pages / 首页 — 合作引导
   -------------------------------------------------------------------------- */
.cooperation-guide {
  padding: 48px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.guide-column {
  background-color: var(--color-paper-soft);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.guide-title {
  font-size: 1.25rem;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
  align-self: flex-start;
}

.guide-text {
  font-size: 0.9375rem;
  color: var(--color-muted);
  flex: 1;
  margin: 0;
}

.guide-link {
  font-size: 0.9375rem;
  font-weight: 500;
  align-self: flex-start;
}

/* --------------------------------------------------------------------------
   pages / 首页 — 常见问题摘选
   -------------------------------------------------------------------------- */
.faq-preview {
  padding: 48px 0;
}

.faq-preview .faq-item {
  max-width: 760px;
}

.faq-more {
  margin-top: 16px;
}

.faq-more a {
  font-size: 0.9375rem;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   pages / 服务项目
   -------------------------------------------------------------------------- */
.page-services .service-directory {
  padding: 0 0 48px;
}

.directory-table-wrap {
  overflow-x: auto;
}

.directory-table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.directory-table-wrap th,
.directory-table-wrap td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--color-line);
  vertical-align: top;
}

.directory-table-wrap th {
  background-color: var(--color-paper-soft);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-muted);
  font-weight: 600;
}

.directory-table-wrap tr:last-child td {
  border-bottom: none;
}

.directory-table-wrap td a {
  font-weight: 500;
}

/* 服务明细块 */
.service-details {
  padding: 48px 0 0;
}

.service-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--color-line);
  align-items: start;
}

.service-item-text {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.service-item-text h3 {
  font-size: 1.375rem;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
  align-self: flex-start;
}

.service-item-text p {
  font-size: 0.9375rem;
  margin: 0;
}

.service-item-text strong {
  display: block;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 2px;
}

.service-link a {
  font-weight: 500;
}

.service-figure {
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.service-figure img {
  aspect-ratio: 3 / 2;
}

/* 适用条件 */
.service-conditions {
  padding: 48px 0;
}

.condition-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

.condition-col {
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
}

.condition-col h3 {
  font-size: 1.0625rem;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.condition-list li {
  font-size: 0.875rem;
  color: var(--color-muted);
  padding: 6px 0 6px 20px;
  position: relative;
}

.condition-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* 委托方法 */
.commission-steps {
  background-color: var(--color-paper-soft);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 28px;
}

.commission-steps h3 {
  font-size: 1.125rem;
  margin-bottom: 16px;
}

.step-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}

.step-list li {
  background-color: var(--color-paper);
  border-radius: var(--radius);
  padding: 16px;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.step-list strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.step-more {
  text-align: right;
}

.step-more a {
  font-size: 0.875rem;
  font-weight: 500;
}

/* 服务FAQ */
.service-faq {
  padding: 48px 0;
}

.service-faq .faq-item {
  max-width: 760px;
}

/* --------------------------------------------------------------------------
   pages / 项目领域
   -------------------------------------------------------------------------- */
.field-index {
  padding: 0 0 48px;
}

.field-index-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.field-index-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 16px 18px;
  transition: border-color var(--transition), transform var(--transition);
}

.field-index-item:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.field-index-no {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-accent);
}

.field-index-name {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-ink);
}

.field-detail {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.field-detail .section-title {
  font-size: 1.375rem;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
  margin-bottom: 24px;
}

.field-detail-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 32px;
}

.field-detail-body h3 {
  font-size: 0.9375rem;
  color: var(--color-accent);
  margin-bottom: 6px;
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.8125rem;
}

.field-detail-body p {
  font-size: 0.9375rem;
  color: var(--color-muted);
  margin: 0;
}

.field-links {
  grid-column: 1 / -1;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 8px;
}

.field-links a {
  font-size: 0.875rem;
  font-weight: 500;
}

/* 领域边界 */
.field-boundary {
  padding: 48px 0;
}

.field-boundary .section-title {
  margin-bottom: 16px;
}

.field-boundary p {
  font-size: 0.9375rem;
  color: var(--color-muted);
  max-width: 760px;
}

/* --------------------------------------------------------------------------
   pages / 作品档案
   -------------------------------------------------------------------------- */
.archive-grid {
  padding: 0 0 48px;
}

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

.archive-card {
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color var(--transition), transform var(--transition);
}

.archive-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.card-number {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.card-title {
  font-size: 1.125rem;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--color-muted);
  flex: 1;
  margin: 0;
}

.card-link {
  font-size: 0.875rem;
  font-weight: 500;
  align-self: flex-start;
}

.archive-detail {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: start;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.archive-detail:first-of-type {
  border-top: 1px solid var(--color-line);
}

.detail-text {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.detail-text .section-title {
  font-size: 1.375rem;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
  align-self: flex-start;
  margin-bottom: 4px;
}

.detail-intro {
  font-size: 0.9375rem;
  color: var(--color-muted);
}

.content-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.content-list li {
  font-size: 0.875rem;
  color: var(--color-muted);
  padding-left: 20px;
  position: relative;
}

.content-list li::before {
  content: "·";
  position: absolute;
  left: 6px;
  color: var(--color-accent);
  font-weight: 700;
}

.spec-note {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin: 0;
}

.spec-note strong {
  color: var(--color-ink);
  font-weight: 600;
}

.detail-media {
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.detail-media img {
  aspect-ratio: 4 / 3;
}

/* 档案使用说明 */
.archive-usage {
  padding: 48px 0;
}

.usage-lead {
  font-size: 0.9375rem;
  color: var(--color-muted);
  max-width: 720px;
  margin-bottom: 24px;
}

.usage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.usage-item {
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
}

.usage-title {
  font-size: 1rem;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-line);
}

.usage-text {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin: 0;
}

.usage-more {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.usage-more a {
  font-size: 0.875rem;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   pages / 创作动态
   -------------------------------------------------------------------------- */
.content-block {
  padding: 40px 0;
  border-bottom: 1px solid var(--color-line);
}

.content-block:first-of-type {
  padding-top: 0;
}

.content-block h2 {
  font-size: 1.375rem;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
  margin-bottom: 12px;
}

.section-intro {
  font-size: 0.9375rem;
  color: var(--color-muted);
  max-width: 640px;
  margin-bottom: 24px;
}

.observation-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.observation-list .observation-item {
  background-color: var(--color-paper);
  border-left: 3px solid var(--color-accent);
  padding: 20px;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.observation-list h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
}

.observation-list p {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin: 0;
}

.direction-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.direction-card {
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
}

.direction-card h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-line);
}

.direction-card p {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin: 0;
}

.media-figure img {
  aspect-ratio: 21 / 7;
}

.method-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.method-item {
  background-color: var(--color-paper-soft);
  border-radius: var(--radius);
  padding: 24px;
}

.method-item h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
}

.method-item p {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin: 0;
}

.content-note {
  background-color: var(--color-paper-soft);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin: 40px 0 0;
}

.content-note h2 {
  font-size: 1.125rem;
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 8px;
}

.content-note p {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin: 0 0 8px;
}

.related-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.related-link {
  font-size: 0.875rem;
  font-weight: 500;
  padding: 8px 16px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}

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

/* --------------------------------------------------------------------------
   pages / 创作流程
   -------------------------------------------------------------------------- */
.process-schedule {
  padding: 0 0 48px;
}

.table-scroll {
  overflow-x: auto;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
  min-width: 640px;
}

.schedule-table th,
.schedule-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-line);
  vertical-align: top;
}

.schedule-table th {
  background-color: var(--color-paper-soft);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-muted);
  font-weight: 600;
}

.schedule-table tr:last-child td {
  border-bottom: none;
}

.schedule-table td:first-child {
  font-weight: 600;
  font-family: var(--font-serif);
}

/* 阶段卡片 */
.process-stage-card {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--color-line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.stage-number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  padding-top: 4px;
}

.stage-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stage-title {
  font-size: 1.375rem;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
  align-self: flex-start;
}

.stage-objective {
  font-size: 0.9375rem;
  color: var(--color-muted);
  max-width: 640px;
}

.stage-figure {
  margin-bottom: 8px;
}

.stage-figure img {
  aspect-ratio: 21 / 6;
}

.stage-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 8px;
}

.stage-detail-item {
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.stage-detail-item h3 {
  font-size: 0.8125rem;
  color: var(--color-accent);
  font-family: var(--font-sans);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.stage-detail-item p {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin: 0;
}

/* 服务能力入口 */
.capability-links {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
}

.section-desc {
  font-size: 0.9375rem;
  color: var(--color-muted);
  max-width: 640px;
  margin-bottom: 20px;
}

.capability-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.capability-list a {
  display: block;
  padding: 16px 18px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-ink);
  transition: border-color var(--transition), transform var(--transition);
}

.capability-list a:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

/* 合作须知 */
.cooperation-notes {
  padding: 48px 0;
}

.cooperation-note-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.cooperation-note-list a {
  display: block;
  padding: 16px 18px;
  background-color: var(--color-paper-soft);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  font-size: 0.875rem;
  color: var(--color-muted);
  transition: border-color var(--transition);
}

.cooperation-note-list a:hover {
  border-color: var(--color-accent);
  color: var(--color-ink);
}

/* --------------------------------------------------------------------------
   pages / 合作方式
   -------------------------------------------------------------------------- */
.cooperation-types {
  padding: 0 0 48px;
}

.type-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.type-card {
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  transition: border-color var(--transition), transform var(--transition);
}

.type-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.type-card::before {
  content: attr(data-no);
  font-family: var(--font-serif);
  font-size: 0.875rem;
  color: var(--color-accent);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.type-card h3 {
  font-size: 1.125rem;
}

.type-card p {
  font-size: 0.875rem;
  color: var(--color-muted);
  flex: 1;
  margin: 0;
}

.cooperation-conditions {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
}

.cooperation-conditions h2 {
  font-size: 1.375rem;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
  margin-bottom: 24px;
}

.condition-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.condition-item {
  background-color: var(--color-paper-soft);
  border-radius: var(--radius);
  padding: 24px;
}

.condition-item h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.condition-item p {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.start-method {
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 28px;
}

.start-method h3 {
  font-size: 1.125rem;
  margin-bottom: 16px;
}

.method-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.method-steps li {
  background-color: var(--color-paper-soft);
  border-radius: var(--radius);
  padding: 16px;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.method-steps strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-accent);
  margin-bottom: 6px;
}

/* 需求自检 */
.demand-checker {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
}

.demand-checker h2 {
  font-size: 1.375rem;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
  margin-bottom: 24px;
}

.checker-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: start;
}

.checker-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.checker-content > p {
  font-size: 0.9375rem;
  color: var(--color-muted);
}

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

.slider-group label {
  font-size: 0.9375rem;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.slider-group label span {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  color: var(--color-accent);
  font-weight: 700;
}

.slider-group input[type="range"] {
  width: 100%;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background-color: var(--color-line);
  border-radius: 2px;
  outline: none;
}

.slider-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--color-accent);
  border: 3px solid var(--color-paper);
  box-shadow: 0 0 0 1px var(--color-accent);
  cursor: pointer;
}

.slider-group input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--color-accent);
  border: 3px solid var(--color-paper);
  box-shadow: 0 0 0 1px var(--color-accent);
  cursor: pointer;
}

.checker-tip {
  background-color: var(--color-paper-soft);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  font-size: 0.9375rem;
  color: var(--color-ink);
}

.checker-media {
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.checker-media img {
  aspect-ratio: 3 / 4;
}

/* 合作FAQ */
.cooperation-faq {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
}

.cooperation-faq h2 {
  font-size: 1.375rem;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
  margin-bottom: 24px;
}

.cooperation-faq .faq-item {
  max-width: 760px;
}

/* 下一步引导 */
.next-steps {
  padding: 40px 0;
}

.next-steps p {
  font-size: 0.9375rem;
  color: var(--color-muted);
}

.next-steps a {
  font-weight: 500;
  margin-right: 16px;
}

/* --------------------------------------------------------------------------
   pages / 常见问题
   -------------------------------------------------------------------------- */
.faq-topic-index {
  padding: 0 0 48px;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.topic-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color var(--transition), transform var(--transition);
}

.topic-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.topic-num {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-accent);
}

.topic-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-ink);
}

.topic-desc {
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.faq-group {
  padding: 40px 0;
  border-bottom: 1px solid var(--color-line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.faq-group .section-title {
  font-size: 1.375rem;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
  margin-bottom: 24px;
}

.faq-group .faq-item {
  max-width: 760px;
}

.faq-more {
  padding: 40px 0;
}

.faq-more .section-title {
  font-size: 1.375rem;
  margin-bottom: 12px;
}

.faq-more p {
  font-size: 0.9375rem;
  color: var(--color-muted);
}

.faq-more a {
  font-weight: 500;
  margin-right: 16px;
}

/* --------------------------------------------------------------------------
   pages / 404
   -------------------------------------------------------------------------- */
.error-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
}

.error-section {
  text-align: center;
  padding: 80px 0;
}

.error-code {
  font-family: var(--font-serif);
  font-size: 5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-section h1 {
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 1rem;
  color: var(--color-muted);
  max-width: 480px;
  margin: 0 auto 24px;
}

.error-link {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--color-accent);
  color: #fff;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 500;
}

.error-link:hover {
  background-color: #a83220;
  color: #fff;
}

/* --------------------------------------------------------------------------
   responsive / 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .nav-link {
    padding: 8px 10px;
    font-size: 0.875rem;
  }

  .header-cta {
    padding: 8px 14px;
    font-size: 0.875rem;
  }

  .index-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .fields-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .topic-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  /* 导航切换 */
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: static;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 0;
    box-shadow: 0 8px 24px rgba(25, 23, 20, 0.06);
    z-index: 99;
  }

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

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

  .nav-item:last-child {
    border-bottom: none;
  }

  .nav-link {
    padding: 14px 24px;
    font-size: 1rem;
  }

  .nav-item.is-current .nav-link::after {
    display: none;
  }

  .nav-item.is-current .nav-link {
    background-color: rgba(200, 64, 43, 0.08);
  }

  .header-cta {
    display: none;
  }

  /* 封面 hero */
  .cover-hero {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 0 48px;
  }

  .hero-title {
    font-size: 2.25rem;
  }

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

  /* 服务名录表 */
  .directory-row {
    grid-template-columns: 1fr 1fr;
  }

  .directory-head {
    display: none;
  }

  .directory-row span {
    padding: 12px 16px;
  }

  .directory-row .col-entry {
    grid-column: 1 / -1;
    padding-top: 0;
  }

  /* 服务明细 */
  .service-item {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .service-figure {
    position: static;
  }

  /* 领域 */
  .field-index-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .field-detail-body {
    grid-template-columns: 1fr;
  }

  .field-links {
    grid-column: 1;
  }

  /* 作品档案 */
  .archive-detail {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .detail-media {
    position: static;
    order: -1;
  }

  /* 流程 */
  .process-stage-card {
    grid-template-columns: 56px 1fr;
    gap: 20px;
  }

  .stage-number {
    font-size: 2rem;
  }

  .stage-detail-grid {
    grid-template-columns: 1fr;
  }

  .capability-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .cooperation-note-list {
    grid-template-columns: 1fr;
  }

  /* 合作 */
  .type-cards {
    grid-template-columns: 1fr;
  }

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

  .method-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .checker-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .checker-media {
    position: static;
    order: -1;
  }

  /* 动态 */
  .observation-list {
    grid-template-columns: 1fr;
  }

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

  .method-list {
    grid-template-columns: 1fr;
  }

  /* 步骤 */
  .step-list {
    grid-template-columns: repeat(2, 1fr);
  }

  /* FAQ */
  .faq-topic-index .content-media-inline {
    display: none;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 16px;
    --header-h: 60px;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  .page-header {
    padding: 20px 0 24px;
    margin-bottom: 32px;
  }

  .page-title {
    font-size: 1.625rem;
  }

  .page-description {
    font-size: 0.8125rem;
  }

  .page-lead {
    font-size: 0.9375rem;
  }

  .breadcrumb {
    padding-top: 16px;
  }

  .site-main > section {
    padding: 36px 0;
  }

  /* 首页 */
  .cover-hero {
    padding: 32px 0 40px;
  }

  .hero-title {
    font-size: 1.875rem;
  }

  .hero-lead {
    font-size: 0.9375rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  .index-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .directory-row {
    grid-template-columns: 1fr;
  }

  .directory-row span {
    padding: 8px 12px;
  }

  .directory-row .col-entry {
    grid-column: 1;
    padding-top: 0;
    padding-bottom: 12px;
  }

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

  .observations-list {
    grid-template-columns: 1fr;
  }

  .process-strip {
    grid-template-columns: 1fr;
  }

  .cooperation-guide {
    grid-template-columns: 1fr;
  }

  /* 服务 */
  .condition-grid {
    grid-template-columns: 1fr;
  }

  .step-list {
    grid-template-columns: 1fr;
  }

  /* 领域 */
  .field-index-grid {
    grid-template-columns: 1fr;
  }

  .field-detail-body {
    grid-template-columns: 1fr;
  }

  /* 作品 */
  .grid-cards {
    grid-template-columns: 1fr;
  }

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

  .usage-more {
    flex-direction: column;
    gap: 8px;
  }

  /* 流程 */
  .process-stage-card {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .stage-number {
    font-size: 1.75rem;
  }

  .capability-list {
    grid-template-columns: 1fr;
  }

  /* 合作 */
  .method-steps {
    grid-template-columns: 1fr;
  }

  /* FAQ */
  .topic-grid {
    grid-template-columns: 1fr;
  }

  .faq-item summary {
    padding: 14px 16px;
    font-size: 0.875rem;
  }

  .faq-item p {
    padding: 0 16px 14px;
    font-size: 0.875rem;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 36px;
  }

  .footer-bottom {
    padding: 12px var(--gutter) 20px;
  }

  /* 404 */
  .error-code {
    font-size: 3.5rem;
  }

  .error-section {
    padding: 60px 0;
  }

  /* 表格 */
  .directory-table-wrap th,
  .directory-table-wrap td {
    padding: 10px 12px;
    font-size: 0.8125rem;
  }

  .schedule-table th,
  .schedule-table td {
    padding: 10px 12px;
    font-size: 0.8125rem;
  }
}