/* ==========================================================================
   韩国午夜剧场 · 全站样式
   base → layout → components → pages → responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base：变量、重置、排版基线
   -------------------------------------------------------------------------- */
:root {
  --bg-page: #f7f8f7;
  --bg-card: #ffffff;
  --text-main: #1f2a26;
  --text-sub: #5c6b64;
  --accent: #0f6b52;
  --accent-dark: #0b4f3d;
  --accent-soft: #eef3f0;
  --line: #d8ded9;
  --container: 1120px;
  --radius: 6px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}

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

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

body {
  margin: 0;
  background: var(--bg-page);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
}

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

p {
  margin: 0;
}

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

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.18s ease;
}

a:hover,
a:focus-visible {
  color: var(--accent-dark);
  text-decoration: underline;
}

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

figure {
  margin: 0;
}

figcaption {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.6;
}

table {
  border-collapse: collapse;
  width: 100%;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   layout：全站骨架 —— 页头 / 导航 / 主内容 / 页脚
   -------------------------------------------------------------------------- */
.site-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 68px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  flex: 0 0 auto;
  font-size: 19px;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: normal;
}

.brand:hover,
.brand:focus-visible {
  color: var(--accent);
  text-decoration: none;
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text-main);
  font-family: inherit;
  font-size: 14px;
  cursor: pointer;
}

.nav-toggle::before {
  content: "栏目";
  font-size: 14px;
}

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

.nav-item a {
  display: block;
  padding: 10px 14px;
  min-height: 44px;
  line-height: 24px;
  color: var(--text-main);
  font-size: 15px;
  border-radius: var(--radius);
}

.nav-item a:hover,
.nav-item a:focus-visible {
  color: var(--accent);
  background: var(--accent-soft);
  text-decoration: none;
}

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

.lang-entry {
  flex: 0 0 auto;
  color: var(--text-sub);
  font-size: 14px;
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

.site-main {
  display: block;
}

.home-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 48px;
}

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

.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--line);
  margin-top: 24px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 12px;
}

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

.footer-list a {
  color: var(--text-sub);
  font-size: 14px;
}

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

.footer-text {
  color: var(--text-sub);
  font-size: 14px;
}

.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 24px 32px;
  border-top: 1px solid var(--line);
  color: var(--text-sub);
  font-size: 14px;
}

/* 顶部说明条 / 提示条 */
.topline,
.top-hint,
.site-notice {
  background: var(--accent-soft);
  border-bottom: 1px solid var(--line);
}

.topline-text,
.top-hint,
.site-notice {
  max-width: var(--container);
  margin: 0 auto;
  padding: 10px 24px;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   components：通用区块、按钮、面包屑、页面标题、FAQ、媒体
   -------------------------------------------------------------------------- */
.section {
  margin-top: 48px;
}

.section-head {
  margin-bottom: 20px;
}

.section-title {
  font-size: 22px;
  margin-bottom: 10px;
}

.section-desc,
.section-intro {
  color: var(--text-sub);
  font-size: 15px;
  max-width: 720px;
}

.section-intro + * {
  margin-top: 16px;
}

.btn-primary {
  display: inline-block;
  padding: 11px 22px;
  min-height: 44px;
  line-height: 22px;
  border-radius: var(--radius);
  background: var(--accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--accent-dark);
  color: #ffffff;
  text-decoration: none;
}

.btn-text {
  display: inline-block;
  padding: 11px 4px;
  min-height: 44px;
  line-height: 22px;
  color: var(--accent);
  font-size: 15px;
  font-weight: 600;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 16px;
}

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

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

.page-header {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}

.page-title {
  font-size: 30px;
  font-weight: 600;
  margin-bottom: 10px;
}

.page-description {
  color: var(--text-sub);
  font-size: 15px;
  max-width: 720px;
}

/* 媒体容器：统一比例与裁切 */
.hero-media,
.section-media,
.overview-figure,
.direction-figure,
.step-media,
.standard-figure,
.media-figure {
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--accent-soft);
}

.hero-media img,
.section-media img,
.overview-figure img,
.direction-figure img,
.step-media img,
.standard-figure img,
.media-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-caption,
.section-caption {
  padding-top: 10px;
}

/* 原生展开收起 */
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.faq-item + .faq-item {
  margin-top: 10px;
}

.faq-question {
  position: relative;
  padding: 14px 44px 14px 18px;
  min-height: 48px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 18px;
  font-weight: 600;
}

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

.faq-question:hover {
  color: var(--accent);
}

.faq-answer {
  padding: 0 18px 16px;
  color: var(--text-sub);
  font-size: 15px;
}

.faq-answer p + p {
  margin-top: 10px;
}

/* --------------------------------------------------------------------------
   pages：首页
   -------------------------------------------------------------------------- */
.hero {
  margin-top: 32px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 40px;
  align-items: start;
}

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

.hero-title {
  font-size: 30px;
  margin-bottom: 14px;
}

.hero-desc {
  color: var(--text-sub);
  font-size: 16px;
  max-width: 620px;
}

.hero-entry {
  margin-top: 20px;
}

.hero-aside {
  min-width: 0;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.hero-aside-title {
  font-size: 17px;
  margin-bottom: 12px;
}

.column-preview {
  display: block;
}

.column-preview-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  font-size: 15px;
}

.column-preview-item:first-child {
  border-top: 0;
}

.column-index {
  flex: 0 0 auto;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
}

.column-preview-item a {
  flex: 0 0 auto;
  font-weight: 600;
}

.column-note {
  flex: 1 1 auto;
  color: var(--text-sub);
  font-size: 14px;
}

.hero-media {
  margin-top: 32px;
  aspect-ratio: 16 / 7;
}

/* 服务方向目录速览 */
.section-directions {
  margin-top: 48px;
}

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

.direction-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 180px) minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.direction-no {
  color: var(--accent);
  font-size: 15px;
  font-weight: 600;
}

.direction-row .direction-name {
  font-size: 17px;
}

.direction-audience {
  color: var(--text-sub);
  font-size: 15px;
}

.direction-enter {
  white-space: nowrap;
}

.direction-enter a {
  font-size: 15px;
  font-weight: 600;
}

.section-media {
  margin-top: 24px;
  aspect-ratio: 16 / 6;
}

/* 合作阶段与交付标准摘要 */
.summary-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

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

.summary-col-title {
  font-size: 17px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.stage-item {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
}

.stage-no {
  flex: 0 0 auto;
  color: var(--accent);
  font-weight: 600;
}

.stage-text {
  color: var(--text-sub);
}

.standard-point {
  position: relative;
  padding: 8px 0 8px 20px;
  color: var(--text-sub);
  font-size: 15px;
}

.standard-point::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 8px;
  height: 2px;
  background: var(--accent);
}

/* 首页常见问题摘要 */
.faq-brief {
  max-width: 820px;
}

.faq-more {
  margin-top: 16px;
  font-size: 15px;
}

/* 栏目索引 */
.index-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.index-col {
  min-width: 0;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

.index-col-title {
  font-size: 16px;
  margin-bottom: 8px;
}

.index-col-desc {
  color: var(--text-sub);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   pages：服务方向
   -------------------------------------------------------------------------- */
.content-shell {
  display: block;
}

.section-overview .overview-figure {
  margin-top: 20px;
  aspect-ratio: 16 / 6;
}

.overview-list {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 32px;
}

.overview-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}

.overview-num {
  flex: 0 0 auto;
  color: var(--accent);
  font-weight: 600;
}

.overview-name {
  flex: 0 0 auto;
  font-weight: 600;
}

.overview-fit {
  color: var(--text-sub);
  font-size: 14px;
}

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

.direction-item + .direction-item {
  margin-top: 20px;
}

.direction-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.direction-num {
  color: var(--accent);
  font-size: 15px;
  font-weight: 600;
}

.direction-item .direction-name {
  font-size: 19px;
}

.direction-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
  gap: 32px;
  margin-top: 18px;
}

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

.direction-fit {
  color: var(--text-main);
  font-size: 15px;
  margin-bottom: 16px;
}

.direction-fit .label {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 8px;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

.direction-block + .direction-block {
  margin-top: 16px;
}

.direction-subtitle {
  font-size: 15px;
  margin-bottom: 8px;
}

.direction-item .direction-list li {
  position: relative;
  padding: 5px 0 5px 18px;
  color: var(--text-sub);
  font-size: 15px;
}

.direction-item .direction-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line);
}

.direction-list-exclude li::before {
  background: var(--accent);
}

.direction-figure {
  aspect-ratio: 4 / 3;
}

.direction-figure figcaption {
  padding-top: 10px;
}

.section-next .next-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.next-item a {
  display: inline-block;
  padding: 10px 18px;
  min-height: 44px;
  line-height: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-card);
  font-size: 15px;
  font-weight: 600;
}

.next-item a:hover,
.next-item a:focus-visible {
  border-color: var(--accent);
  text-decoration: none;
}

.next-note {
  margin-top: 14px;
  color: var(--text-sub);
  font-size: 15px;
}

/* --------------------------------------------------------------------------
   pages：合作流程
   -------------------------------------------------------------------------- */
.process-table {
  margin-top: 20px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14px;
}

.process-table th,
.process-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  line-height: 1.6;
}

.process-table thead th {
  background: var(--accent-soft);
  color: var(--text-main);
  font-weight: 600;
  white-space: nowrap;
}

.process-table tbody th {
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
}

.process-table tbody tr:last-child th,
.process-table tbody tr:last-child td {
  border-bottom: 0;
}

.process-step {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}

.process-step + .process-step {
  margin-top: 20px;
}

.step-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.step-index {
  color: var(--accent);
  font-size: 15px;
  font-weight: 600;
}

.step-title {
  font-size: 19px;
}

.step-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  margin-top: 18px;
}

.step-col {
  min-width: 0;
}

.step-subtitle {
  font-size: 15px;
  margin-bottom: 8px;
}

.step-list li {
  position: relative;
  padding: 5px 0 5px 18px;
  color: var(--text-sub);
  font-size: 15px;
}

.step-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line);
}

.step-col-client .step-list li::before {
  background: var(--accent);
}

.step-media {
  margin-top: 20px;
  aspect-ratio: 16 / 6;
}

.step-media figcaption {
  padding-top: 10px;
}

.bridge-list {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

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

.bridge-title {
  font-size: 16px;
  margin-bottom: 8px;
}

.bridge-text {
  color: var(--text-sub);
  font-size: 15px;
}

.next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.next-link {
  display: inline-block;
  padding: 10px 18px;
  min-height: 44px;
  line-height: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-card);
  font-size: 15px;
  font-weight: 600;
}

.next-link:hover,
.next-link:focus-visible {
  border-color: var(--accent);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   pages：交付标准
   -------------------------------------------------------------------------- */
.standard-intro .section-title {
  margin-bottom: 12px;
}

.standard-intro p + p {
  margin-top: 12px;
  color: var(--text-sub);
  font-size: 15px;
  max-width: 720px;
}

.standard-figure {
  margin-top: 20px;
  aspect-ratio: 16 / 6;
}

.standard-columns .section-title {
  margin-bottom: 16px;
}

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

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

.col-title {
  font-size: 17px;
  margin-bottom: 8px;
}

.col-desc {
  color: var(--text-sub);
  font-size: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.check-list,
.boundary-list {
  display: block;
}

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

.check-item:last-child,
.boundary-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.check-name,
.boundary-name {
  font-size: 15px;
  margin-bottom: 4px;
}

.check-desc,
.boundary-desc {
  color: var(--text-sub);
  font-size: 14px;
}

.boundary-name {
  color: var(--text-main);
}

.verify-section p {
  color: var(--text-sub);
  font-size: 15px;
  max-width: 720px;
}

.verify-list {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

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

.verify-name {
  font-size: 16px;
  margin-bottom: 8px;
}

.verify-desc {
  color: var(--text-sub);
  font-size: 15px;
}

.boundary-entry p {
  color: var(--text-sub);
  font-size: 15px;
  max-width: 720px;
}

.entry-links {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.entry-links a {
  display: inline-block;
  padding: 10px 18px;
  min-height: 44px;
  line-height: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-card);
  font-size: 15px;
  font-weight: 600;
}

.entry-links a:hover,
.entry-links a:focus-visible {
  border-color: var(--accent);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   pages：常见问题
   -------------------------------------------------------------------------- */
.faq-intro {
  display: grid;
  grid-template-columns: minmax(0, 360px) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.faq-intro-media {
  min-width: 0;
}

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

.media-figure figcaption {
  padding-top: 10px;
}

.faq-intro-text {
  min-width: 0;
}

.faq-intro-text .section-title {
  margin-bottom: 12px;
}

.faq-intro-text > p {
  color: var(--text-sub);
  font-size: 15px;
  max-width: 720px;
}

.faq-intro-list {
  margin-top: 16px;
}

.faq-intro-list li {
  position: relative;
  padding: 6px 0 6px 18px;
  color: var(--text-sub);
  font-size: 15px;
}

.faq-intro-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line);
}

.faq-group {
  margin-top: 40px;
}

.faq-group .section-title {
  margin-bottom: 8px;
}

.faq-group .section-desc {
  margin-bottom: 16px;
}

.faq-group-feedback .section-desc {
  margin-bottom: 16px;
}

.feedback-list {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

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

.feedback-title {
  font-size: 16px;
  margin-bottom: 8px;
}

.feedback-item p {
  color: var(--text-sub);
  font-size: 15px;
}

.faq-related .section-desc {
  margin-bottom: 16px;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.related-list a {
  display: block;
  padding: 12px 16px;
  min-height: 44px;
  line-height: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-card);
  font-size: 15px;
  font-weight: 600;
}

.related-list a:hover,
.related-list a:focus-visible {
  border-color: var(--accent);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   pages：404
   -------------------------------------------------------------------------- */
.error-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 56px;
}

.error-panel {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 720px;
}

.error-code {
  color: var(--accent);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

.error-title {
  font-size: 30px;
  margin-bottom: 12px;
}

.error-text {
  color: var(--text-sub);
  font-size: 15px;
}

.error-text + .error-text {
  margin-top: 10px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 20px;
}

.error-index {
  margin-top: 40px;
}

.error-index .section-title {
  margin-bottom: 16px;
}

.index-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

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

.index-item a {
  display: block;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.index-desc {
  display: block;
  color: var(--text-sub);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   responsive：960px / 640px 断点
   -------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
    padding: 12px 20px;
  }

  .site-nav {
    order: 3;
    flex: 1 1 100%;
    justify-content: flex-start;
  }

  .nav-toggle {
    display: inline-block;
  }

  .nav-list {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-top: 8px;
    border-top: 1px solid var(--line);
  }

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

  .nav-item a {
    padding: 12px 4px;
  }

  .lang-entry {
    margin-left: auto;
  }

  .home-main,
  .inner-main,
  .error-main {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .direction-row {
    grid-template-columns: 44px minmax(0, 1fr);
    grid-template-areas:
      "no name"
      "audience audience"
      "enter enter";
    gap: 6px 12px;
    align-items: start;
  }

  .direction-no {
    grid-area: no;
  }

  .direction-row .direction-name {
    grid-area: name;
  }

  .direction-audience {
    grid-area: audience;
  }

  .direction-enter {
    grid-area: enter;
  }

  .summary-columns,
  .standard-grid,
  .faq-intro,
  .direction-body,
  .step-body {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .index-grid,
  .related-list,
  .index-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .verify-list,
  .bridge-list,
  .feedback-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .home-main,
  .inner-main,
  .error-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .header-inner,
  .footer-inner,
  .footer-bottom,
  .topline-text,
  .top-hint,
  .site-notice {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-title,
  .hero-title,
  .error-title {
    font-size: 24px;
  }

  .section-title {
    font-size: 20px;
  }

  .section {
    margin-top: 36px;
  }

  .hero-media,
  .section-media,
  .overview-figure,
  .step-media,
  .standard-figure {
    aspect-ratio: 16 / 9;
  }

  .direction-item,
  .process-step,
  .summary-col,
  .standard-col,
  .error-panel {
    padding: 18px;
  }

  .index-grid,
  .related-list,
  .index-list,
  .verify-list,
  .bridge-list,
  .feedback-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .process-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .process-table th,
  .process-table td {
    white-space: normal;
    min-width: 120px;
  }
}

@media (prefers-reduced-motion: reduce) {
  a,
  .nav-item a,
  .faq-question {
    transition: none;
  }
}