/* ==========================================================================
   天美传媒寸止挑战 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base
   -------------------------------------------------------------------------- */

:root {
  --c-bg: #FFFFFF;
  --c-bg-soft: #F6F4EF;
  --c-ink: #1B1F23;
  --c-muted: #5B646E;
  --c-accent: #14504F;
  --c-alert: #B4551F;
  --c-line: #D8D3C8;
  --c-accent-soft: #E8F0EE;
  --font-serif: "Noto Serif SC", "Songti SC", SimSun, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --shell: 1180px;
  --gutter: 24px;
  --aside-w: 240px;
  --aside-gap: 48px;
}

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

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

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  font-variant-numeric: tabular-nums;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--c-ink);
}

p {
  margin: 0 0 16px;
}

p:last-child {
  margin-bottom: 0;
}

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

dl,
dd {
  margin: 0;
}

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

figure {
  margin: 0;
}

a {
  color: var(--c-accent);
  text-decoration: none;
  background-image: linear-gradient(var(--c-accent), var(--c-accent));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 1px;
  transition: background-size 160ms ease, color 160ms ease;
}

a:hover,
a:focus-visible {
  background-size: 100% 1px;
}

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

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

strong {
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   layout · 全站骨架
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 72px;
}

.brand-mark {
  flex: none;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--c-ink);
  background-image: none;
  white-space: nowrap;
}

.brand-mark:hover {
  background-size: 0 1px;
  color: var(--c-accent);
}

.site-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 2px;
  font-size: 15px;
  color: var(--c-ink);
  background-image: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--c-accent);
  border-bottom-color: var(--c-line);
}

.nav-link.is-current {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

.feature-entry {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  font-size: 14px;
  color: var(--c-accent);
  border: 1px solid var(--c-accent);
  border-radius: 4px;
  background-image: none;
  white-space: nowrap;
}

.feature-entry:hover {
  background-color: var(--c-accent-soft);
  background-size: 0 1px;
}

.entry-dot {
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--c-alert);
}

.nav-toggle {
  display: none;
  flex: none;
  width: 44px;
  height: 44px;
  padding: 12px 10px;
  flex-direction: column;
  justify-content: space-between;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--c-ink);
}

.site-main {
  display: block;
  width: 100%;
}

.inner-main {
  min-width: 0;
  max-width: 860px;
}

.page-layout {
  display: grid;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px var(--gutter) 56px;
  gap: var(--aside-gap);
  grid-template-columns: minmax(0, 1fr);
}

.sidebar-left .page-layout,
.page-layout.sidebar-left {
  grid-template-columns: var(--aside-w) minmax(0, 1fr);
}

.sidebar-left .page-layout > .inner-main,
.page-layout.sidebar-left > .inner-main {
  order: 2;
}

.sidebar-left .page-layout > .page-aside,
.sidebar-left .page-layout > .page-sidebar,
.page-layout.sidebar-left > .page-aside,
.page-layout.sidebar-left > .page-sidebar {
  order: 1;
}

/* 面包屑与页面标题区 */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 20px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--c-muted);
}

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

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

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

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

.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(--c-line);
}

.page-header {
  margin-bottom: 12px;
}

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

.page-title-block {
  margin-bottom: 32px;
}

.page-lead {
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
  max-width: 34em;
}

.page-subtitle {
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
  max-width: 34em;
}

.page-intro {
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
  max-width: 34em;
}

/* --------------------------------------------------------------------------
   components · 通用模块
   -------------------------------------------------------------------------- */

/* 分节通用 */

.section-block,
.content-section,
.service-group,
.combination-section {
  padding: 32px 0;
  border-top: 1px solid var(--c-line);
}

.section-block:first-child,
.content-section:first-child,
.service-group:first-child {
  border-top: 0;
  padding-top: 0;
}

.section-num,
.section-no,
.section-index {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-accent);
  font-variant-numeric: tabular-nums;
}

.section-title {
  font-size: 22px;
  line-height: 1.4;
  margin-bottom: 12px;
}

.content-section h2 {
  font-size: 22px;
  line-height: 1.4;
  margin-bottom: 12px;
}

.section-lead,
.section-intro {
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
  max-width: 34em;
  margin-bottom: 20px;
}

.section-note {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

.group-note {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

.subsection-title {
  font-size: 17px;
  margin-bottom: 10px;
}

/* 图片与图注 */

.hero-figure,
.media-figure,
.group-figure,
.page-figure,
.section-figure,
.content-figure {
  overflow: hidden;
  border-radius: 6px;
  background: var(--c-bg-soft);
}

.hero-figure img,
.media-figure img,
.group-figure img,
.page-figure img,
.section-figure img,
.content-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-figure figcaption,
.media-figure figcaption,
.group-figure figcaption,
.page-figure figcaption,
.section-figure figcaption,
.content-figure figcaption,
.figure-caption {
  padding: 10px 2px 0;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--c-muted);
}

/* 表格 */

.table-scroll {
  width: 100%;
  overflow-x: auto;
}

.data-table,
.schedule-table,
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  line-height: 1.7;
}

.table-caption {
  caption-side: top;
  padding: 0 0 10px;
  text-align: left;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--c-muted);
}

.data-table th,
.schedule-table th,
.spec-table th {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 14px;
  text-align: left;
  color: var(--c-ink);
  padding: 12px 14px;
  border-bottom: 1px solid var(--c-line);
  background: var(--c-bg-soft);
  white-space: nowrap;
}

.data-table td,
.schedule-table td,
.spec-table td {
  padding: 14px;
  vertical-align: top;
  border-bottom: 1px solid var(--c-line);
  color: var(--c-ink);
}

.data-table tbody tr:nth-child(even),
.schedule-table tbody tr:nth-child(even),
.spec-table tbody tr:nth-child(even) {
  background: var(--c-bg-soft);
}

.spec-table tbody th {
  background: transparent;
  white-space: normal;
  font-size: 15px;
  padding: 14px;
}

.table-note {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

/* 编号列表 */

.numbered-list {
  counter-reset: nl;
  display: grid;
  gap: 14px;
}

.numbered-list li {
  position: relative;
  padding-left: 40px;
  font-size: 15px;
  line-height: 1.75;
}

.numbered-list li::before {
  counter-increment: nl;
  content: counter(nl, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--c-accent);
}

/* 手风琴 */

.faq-list,
.faq-accordion {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--c-line);
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 48px;
  padding: 14px 2px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex: none;
  width: 22px;
  text-align: center;
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--c-accent);
  transition: transform 200ms ease;
}

.faq-item[open] .faq-question::after {
  content: "+";
  transform: rotate(45deg);
}

.faq-item[open] .faq-question {
  color: var(--c-accent);
}

.faq-answer {
  padding: 2px 2px 18px;
  background: transparent;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-ink);
}

.faq-item[open] .faq-answer {
  background: var(--c-accent-soft);
  padding: 14px 16px 18px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.faq-answer p {
  margin: 0 0 10px;
}

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

/* 下一步横幅 */

.next-step,
.next-step-banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 32px;
  padding: 20px 22px;
  background: var(--c-bg-soft);
  border-left: 3px solid var(--c-accent);
  border-radius: 4px;
}

.next-step-text {
  flex: 1 1 320px;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-ink);
}

.next-step-link {
  flex: none;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  font-size: 14px;
  color: var(--c-accent);
  border: 1px solid var(--c-accent);
  border-radius: 4px;
  background-image: none;
}

.next-step-link:hover {
  background-color: var(--c-accent-soft);
  background-size: 0 1px;
}

/* 相关链接 */

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--c-line);
  font-size: 14px;
}

.related-links-label {
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--c-muted);
}

.related-links-item {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
}

/* 内文链接 */

.inline-link {
  color: var(--c-accent);
}

/* --------------------------------------------------------------------------
   components · 侧栏（目录 / 筛选）
   -------------------------------------------------------------------------- */

.page-aside,
.page-sidebar,
.side-nav {
  min-width: 0;
  align-self: start;
}

.aside-toc,
.toc-nav,
.sidebar-nav {
  margin-bottom: 28px;
}

.aside-toc-title,
.aside-label,
.toc-title,
.sidebar-label,
.sidebar-title,
.side-nav-title,
.filter-title,
.aside-filter-title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--c-muted);
}

.toc-list,
.side-nav-list,
.sidebar-list {
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--c-line);
}

.toc-link,
.sidebar-link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 4px 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-muted);
  background-image: none;
  border-left: 2px solid transparent;
  margin-left: -1px;
}

.toc-link:hover,
.sidebar-link:hover {
  color: var(--c-accent);
  background-size: 0 1px;
}

.toc-link.is-active,
.toc-link.is-current,
.sidebar-link.is-current {
  color: var(--c-accent);
  border-left-color: var(--c-accent);
  background: var(--c-accent-soft);
}

.side-nav-list a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 4px 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-muted);
  background-image: none;
  border-left: 2px solid transparent;
  margin-left: -1px;
}

.side-nav-list a:hover {
  color: var(--c-accent);
  background-size: 0 1px;
}

/* 筛选标签 */

.aside-filter,
.filter-block,
.sidebar-filters,
.aside-tags {
  margin-bottom: 24px;
}

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

.filter-tag,
.tag-btn {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--c-muted);
  border: 1px solid var(--c-line);
  border-radius: 4px;
  background: var(--c-bg);
}

.filter-tag:hover,
.tag-btn:hover {
  color: var(--c-accent);
  border-color: var(--c-accent);
}

.filter-tag.is-active,
.tag-btn.is-active {
  color: var(--c-accent);
  border-color: var(--c-accent);
  background: var(--c-accent-soft);
}

.aside-tags .toc-list {
  border-left: 0;
}

.aside-tags .toc-link {
  margin-left: 0;
  border-left: 0;
  padding-left: 0;
}

/* 侧栏标签链接（流程页） */

.aside-tags .tag-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  margin: 0 8px 8px 0;
  font-size: 13px;
  color: var(--c-muted);
  border: 1px solid var(--c-line);
  border-radius: 4px;
  background-image: none;
}

.aside-tags .tag-link:hover {
  color: var(--c-accent);
  border-color: var(--c-accent);
  background-size: 0 1px;
}

/* --------------------------------------------------------------------------
   components · 页脚
   -------------------------------------------------------------------------- */

.site-footer {
  margin-top: 56px;
  background: var(--c-bg-soft);
  border-top: 1px solid var(--c-line);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 44px var(--gutter) 32px;
}

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

.footer-brand-name {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--c-ink);
}

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

.footer-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--c-muted);
  max-width: 30em;
}

.footer-title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--c-ink);
}

.footer-list {
  display: grid;
  gap: 2px;
}

.footer-list a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--c-muted);
  background-image: none;
}

.footer-list a:hover {
  color: var(--c-accent);
  background-size: 0 1px;
}

.footer-feedback {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter) 24px;
}

.footer-feedback p {
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--c-line);
  font-size: 13px;
  line-height: 1.85;
  letter-spacing: 0.02em;
  color: var(--c-muted);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 16px var(--gutter) 28px;
  border-top: 1px solid var(--c-line);
}

.footer-copy,
.footer-purpose {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--c-muted);
}

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */

.home-main {
  padding-bottom: 0;
}

/* 定位首屏 */

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

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px var(--gutter);
}

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

.hero-brand {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--c-accent);
}

.hero-title {
  font-size: 40px;
  line-height: 1.3;
  margin-bottom: 18px;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-muted);
  max-width: 32em;
  margin-bottom: 26px;
}

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

.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  font-size: 15px;
  border-radius: 4px;
  background-image: none;
}

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

.btn-primary:hover {
  background: #0F3E3D;
  background-size: 0 1px;
  color: #FFFFFF;
}

.btn-ghost {
  color: var(--c-accent);
  border: 1px solid var(--c-accent);
  background: transparent;
}

.btn-ghost:hover {
  background-color: var(--c-accent-soft);
  background-size: 0 1px;
}

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

.hero-figure img {
  aspect-ratio: 4 / 3;
  border-radius: 6px;
}

/* 频率分频条 */

.freq-strip {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 0;
  background: var(--c-bg-soft);
  border-bottom: 1px solid var(--c-line);
}

.freq-col {
  min-width: 0;
  padding: 26px 28px;
  border-left: 1px solid var(--c-line);
}

.freq-col:first-child {
  border-left: 0;
}

.freq-col-wide {
  min-width: 0;
}

.freq-title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--c-ink);
}

.freq-list {
  display: grid;
  gap: 4px;
}

.freq-list li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

.freq-list a {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  font-size: 14px;
}

/* 首页双栏 */

.home-layout {
  padding-top: 44px;
}

.content-column {
  min-width: 0;
}

/* 服务分组速览 */

.group-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--c-line);
}

.group-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 160px;
  gap: 28px;
  align-items: start;
  padding: 24px 0;
  border-bottom: 1px solid var(--c-line);
}

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

.group-name {
  font-size: 17px;
  margin-bottom: 8px;
}

.group-items {
  display: grid;
  gap: 4px;
  margin-bottom: 10px;
}

.group-items li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.7;
}

.group-items li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 1px;
  background: var(--c-accent);
}

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

.group-figure {
  min-width: 0;
  margin: 0;
}

.group-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 4px;
}

/* 交付口径图文 */

.media-two-col {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.media-figure {
  min-width: 0;
  margin: 0;
}

.media-figure img {
  aspect-ratio: 3 / 4;
  border-radius: 6px;
}

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

.media-text .section-lead {
  margin-bottom: 18px;
}

/* 双路径分流 */

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

.path-card {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--c-line);
  border-radius: 6px;
  background: var(--c-bg);
}

.path-name {
  font-size: 17px;
  margin-bottom: 12px;
}

.path-steps {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
  counter-reset: ps;
}

.path-steps li {
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-ink);
}

.path-steps li::before {
  counter-increment: ps;
  content: counter(ps);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--c-accent);
}

.path-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   pages · 内页公共模块
   -------------------------------------------------------------------------- */

/* 服务目录：分组行列表 */

.service-group {
  padding: 32px 0;
}

.service-group .group-figure {
  margin: 0 0 20px;
}

.service-group .group-figure img {
  width: 100%;
  aspect-ratio: 16 / 7;
  border-radius: 6px;
}

.service-rows {
  display: grid;
  border-top: 1px solid var(--c-line);
}

.service-row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1.1fr) minmax(0, 1.3fr) minmax(0, 1.1fr);
  gap: 20px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--c-line);
}

.row-no {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--c-accent);
}

.row-cell {
  min-width: 0;
}

.row-name h3 {
  font-size: 16px;
  line-height: 1.6;
}

.cell-label {
  margin: 0 0 4px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-muted);
}

.row-cell > p:not(.cell-label) {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-ink);
}

.row-note {
  grid-column: 2 / -1;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-alert);
}

/* 服务目录：组合建议 */

.combination-rows {
  display: grid;
  border-top: 1px solid var(--c-line);
}

.combination-row {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.6fr);
  gap: 24px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px solid var(--c-line);
}

.combination-row h3 {
  font-size: 16px;
  line-height: 1.6;
}

.combination-row p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-ink);
}

/* 合作流程：角色定义列表 */

.role-list {
  display: grid;
  border-top: 1px solid var(--c-line);
}

.role-list .role-item {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--c-line);
}

.role-term {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--c-ink);
}

.role-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-ink);
}

/* 合作流程：双栏规则 */

.split-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

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

.split-col .rule-list {
  display: grid;
  gap: 10px;
  counter-reset: rl;
}

.split-col .rule-item {
  position: relative;
  padding-left: 28px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-ink);
}

.split-col .rule-item::before {
  counter-increment: rl;
  content: counter(rl);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--c-accent);
}

/* 合作流程：步骤列表 */

.step-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--c-line);
}

.step-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--c-line);
}

.step-num {
  grid-row: 1 / span 3;
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--c-accent);
}

.step-item .step-title {
  font-size: 16px;
  line-height: 1.6;
}

.step-item .step-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-ink);
}

.step-item .step-carry {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-muted);
}

/* 场地与条件 */

.definition-list {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  border-top: 1px solid var(--c-line);
}

.definition-list dt {
  padding: 14px 0;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  border-bottom: 1px solid var(--c-line);
}

.definition-list dd {
  padding: 14px 0 14px 24px;
  font-size: 14px;
  line-height: 1.8;
  border-bottom: 1px solid var(--c-line);
}

.equipment-list {
  display: grid;
  border-top: 1px solid var(--c-line);
}

.equipment-item {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr) 200px;
  gap: 20px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--c-line);
}

.equipment-name {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
}

.equipment-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-ink);
}

.equipment-note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-alert);
}

.outdoor-list {
  display: grid;
  border-top: 1px solid var(--c-line);
  margin-top: 20px;
}

.outdoor-item {
  display: grid;
  grid-template-columns: 160px 180px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--c-line);
}

.outdoor-type {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
}

.outdoor-period {
  font-size: 14px;
  color: var(--c-ink);
}

.outdoor-limit {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

.rule-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--c-line);
  counter-reset: rn;
}

.rule-item {
  position: relative;
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 16px 0 16px 34px;
  border-bottom: 1px solid var(--c-line);
}

.rule-item::before {
  counter-increment: rn;
  content: counter(rn, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 17px;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--c-accent);
}

.rule-name {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
}

.rule-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-ink);
}

/* 需求清单 */

.check-list {
  display: grid;
  border-top: 1px solid var(--c-line);
}

.check-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px solid var(--c-line);
}

.check-num {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--c-accent);
}

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

.check-name {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 4px;
}

.check-required {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--c-alert);
}

.check-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

/* 需求清单：筹备要点 */

.prep-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.prep-main {
  min-width: 0;
}

.prep-side {
  min-width: 0;
  padding: 18px 20px;
  background: var(--c-bg-soft);
  border-radius: 6px;
}

.prep-subtitle {
  font-size: 16px;
  margin-bottom: 12px;
}

.prep-list {
  display: grid;
  gap: 12px;
}

.prep-item {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-ink);
}

.prep-name {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 2px;
}

.prep-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

.order-list {
  display: grid;
  gap: 8px;
  counter-reset: on;
}

.order-item {
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-ink);
}

.order-item::before {
  counter-increment: on;
  content: counter(on);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--c-accent);
}

/* 交付标准 */

.review-steps {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--c-line);
  counter-reset: rv;
}

.review-step {
  position: relative;
  padding: 16px 0 16px 40px;
  border-bottom: 1px solid var(--c-line);
}

.review-step::before {
  counter-increment: rv;
  content: counter(rv, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 17px;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--c-accent);
}

.review-step h3 {
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 4px;
}

.review-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-ink);
}

.acceptance-list {
  display: grid;
  border-top: 1px solid var(--c-line);
  margin-top: 20px;
}

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

.acceptance-item h3 {
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 6px;
}

.acceptance-standard {
  margin: 0 0 4px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-ink);
}

.acceptance-issue {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-muted);
}

.revision-list {
  display: grid;
  gap: 12px;
  counter-reset: rl2;
}

.revision-item {
  position: relative;
  padding-left: 34px;
}

.revision-item::before {
  counter-increment: rl2;
  content: counter(rl2, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--c-accent);
}

.revision-item h3 {
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 4px;
}

.revision-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-ink);
}

/* 关于我们 */

.principle-list {
  display: grid;
  border-top: 1px solid var(--c-line);
}

.principle-item {
  display: grid;
  grid-template-columns: 44px 180px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px solid var(--c-line);
}

.principle-num {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--c-accent);
}

.principle-name {
  font-size: 16px;
  line-height: 1.6;
}

.principle-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-ink);
}

.role-name {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  padding: 16px 0 4px;
  border-top: 1px solid var(--c-line);
}

.role-detail {
  padding: 0 0 16px;
  border-bottom: 1px solid var(--c-line);
}

.role-scope {
  margin: 0 0 4px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-ink);
}

.role-handoff {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-muted);
}

.section-text {
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-ink);
}

.maintain-list {
  display: grid;
  border-top: 1px solid var(--c-line);
}

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

.maintain-name {
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 4px;
}

.maintain-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-ink);
}

/* 404 */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52vh;
  padding: 64px var(--gutter);
}

.error-block {
  width: 100%;
  max-width: 640px;
  text-align: left;
}

.error-code {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--c-accent);
}

.error-block h1 {
  font-size: 32px;
  line-height: 1.35;
  margin-bottom: 14px;
}

.error-lead {
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
  margin-bottom: 24px;
}

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

.btn-home {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  font-size: 14px;
  color: var(--c-accent);
  border: 1px solid var(--c-accent);
  border-radius: 4px;
  background-image: none;
}

.btn-home:hover {
  background-color: var(--c-accent-soft);
  background-size: 0 1px;
}

/* 页面级微调（仅限业务模块） */

.page-faq .page-title-block,
.page-faq .page-header {
  margin-bottom: 12px;
}

.page-faq .page-figure {
  margin: 0 0 24px;
}

.page-faq .page-figure img {
  width: 100%;
  aspect-ratio: 16 / 6;
  border-radius: 6px;
}

.page-workflow .page-figure {
  margin: 24px 0 8px;
}

.page-workflow .page-figure img {
  width: 100%;
  aspect-ratio: 16 / 6;
  border-radius: 6px;
}

.page-brief .section-figure,
.page-delivery .section-figure {
  margin: 20px 0 8px;
}

.page-brief .section-figure img,
.page-delivery .section-figure img {
  width: 100%;
  aspect-ratio: 16 / 7;
  border-radius: 6px;
}

.page-studio .section-figure img {
  width: 100%;
  aspect-ratio: 16 / 7;
  border-radius: 6px;
}

.page-about .content-figure img {
  width: 100%;
  aspect-ratio: 16 / 7;
  border-radius: 6px;
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1080px) {
  :root {
    --aside-w: 200px;
    --aside-gap: 32px;
  }

  .hero-title {
    font-size: 34px;
  }

  .hero-inner {
    gap: 32px;
    padding: 44px var(--gutter);
  }

  .freq-col {
    padding: 22px 20px;
  }

  .footer-main {
    grid-template-columns: 1.3fr 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .media-two-col {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 24px;
  }

  .service-row {
    grid-template-columns: 32px minmax(0, 1fr) minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 16px;
  }

  .equipment-item {
    grid-template-columns: 140px minmax(0, 1fr) 170px;
  }
}

@media (max-width: 780px) {
  .header-inner {
    gap: 12px;
    height: 64px;
  }

  .nav-toggle {
    display: flex;
    order: 3;
    margin-left: auto;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    order: 4;
    padding: 0 var(--gutter);
    background: var(--c-bg);
    border-bottom: 1px solid var(--c-line);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 16px;
  }

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

  .nav-list li {
    border-bottom: 1px solid var(--c-line);
  }

  .nav-link {
    width: 100%;
    min-height: 48px;
    border-bottom: 0;
    font-size: 16px;
  }

  .nav-link.is-current {
    border-bottom: 0;
    background: var(--c-accent-soft);
  }

  .feature-entry {
    order: 2;
    padding: 0 12px;
    font-size: 13px;
  }

  .page-layout,
  .sidebar-left .page-layout,
  .page-layout.sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
    padding: 24px var(--gutter) 40px;
  }

  .sidebar-left .page-layout > .inner-main,
  .page-layout.sidebar-left > .inner-main {
    order: 1;
  }

  .sidebar-left .page-layout > .page-aside,
  .sidebar-left .page-layout > .page-sidebar,
  .page-layout.sidebar-left > .page-aside,
  .page-layout.sidebar-left > .page-sidebar {
    order: 2;
  }

  .page-aside,
  .page-sidebar,
  .side-nav {
    position: static;
  }

  .aside-toc,
  .toc-nav,
  .sidebar-nav {
    margin-bottom: 16px;
  }

  .toc-list,
  .side-nav-list,
  .sidebar-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    border-left: 0;
  }

  .toc-link,
  .sidebar-link,
  .side-nav-list a {
    margin-left: 0;
    border-left: 0;
    border: 1px solid var(--c-line);
    border-radius: 4px;
    padding: 0 12px;
    font-size: 13px;
  }

  .toc-link.is-active,
  .toc-link.is-current,
  .sidebar-link.is-current {
    border-left: 1px solid var(--c-accent);
  }

  .filter-tags {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 6px;
  }

  .filter-tag,
  .tag-btn {
    flex: none;
    white-space: nowrap;
  }

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

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 32px var(--gutter) 36px;
  }

  .hero-title {
    font-size: 28px;
  }

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

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

  .freq-col {
    border-left: 0;
    border-top: 1px solid var(--c-line);
    padding: 18px var(--gutter);
  }

  .freq-col:first-child {
    border-top: 0;
  }

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

  .group-figure {
    order: -1;
  }

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

  .media-two-col {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .path-grid,
  .split-columns,
  .prep-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .service-row {
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 4px 14px;
  }

  .service-row .row-name {
    grid-column: 2;
  }

  .service-row .row-scene,
  .service-row .row-output {
    grid-column: 2;
  }

  .service-row .row-note {
    grid-column: 2;
  }

  .combination-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .role-list .role-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

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

  .definition-list dt {
    border-bottom: 0;
    padding-bottom: 2px;
  }

  .definition-list dd {
    padding-left: 0;
  }

  .equipment-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .outdoor-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .rule-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .principle-item {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 4px 14px;
  }

  .principle-item .principle-name {
    grid-column: 2;
  }

  .principle-item .principle-text {
    grid-column: 2;
  }

  .step-item {
    grid-template-columns: 32px minmax(0, 1fr);
  }

  .footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    padding: 32px var(--gutter) 24px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-list a {
    min-height: 40px;
  }

  .footer-bottom {
    flex-direction: column;
  }

  .next-step,
  .next-step-banner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
    line-height: 1.7;
  }

  .brand-mark {
    font-size: 17px;
  }

  .feature-entry {
    font-size: 12px;
    padding: 0 10px;
    gap: 6px;
  }

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

  .page-title {
    font-size: 22px;
  }

  .section-title,
  .content-section h2 {
    font-size: 19px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

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

  .footer-feedback p {
    font-size: 12px;
  }

  .data-table,
  .schedule-table,
  .spec-table {
    font-size: 14px;
  }

  .data-table th,
  .schedule-table th,
  .spec-table th,
  .data-table td,
  .schedule-table td,
  .spec-table td {
    padding: 10px;
  }

  .error-block h1 {
    font-size: 24px;
  }
}

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