/* ==========================================================================
   天美传媒精品 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base：变量、重置、基础排版
   -------------------------------------------------------------------------- */
:root {
  --ink-green: #173F35;
  --ink-green-deep: #102C25;
  --brick: #C4553B;
  --brick-deep: #A5432C;
  --mustard: #E0A63A;
  --cream: #F6F2E9;
  --cream-warm: #EFE8DA;
  --graphite: #232323;
  --graphite-soft: #4A4A46;
  --teal-pale: #CFE3DA;
  --line: #D9D1C2;
  --line-soft: #E7E0D2;
  --white: #FFFFFF;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow-card: 0 1px 2px rgba(23, 63, 53, 0.06), 0 6px 18px rgba(23, 63, 53, 0.05);
  --container: 1180px;
  --measure: 760px;
  --gap: 24px;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans GB", sans-serif;
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--graphite);
  background-color: var(--cream);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink-green);
}

p {
  margin: 0;
}

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

li {
  list-style: none;
}

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

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--brick);
  outline-offset: 3px;
}

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

figure {
  margin: 0;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  cursor: pointer;
}

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 / 主容器 / 面包屑 / 页标题 / 页脚）
   -------------------------------------------------------------------------- */
.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--ink-green);
  color: var(--cream);
  border-bottom: 3px solid var(--mustard);
}

.header-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px 12px;
}

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

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

.brand-name {
  font-size: 21px;
  font-weight: 700;
  line-height: 1.3;
}

.brand-slogan {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--teal-pale);
}

.header-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.quick-link {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 4px 14px;
  font-size: 13.5px;
  color: var(--cream);
  border: 1px solid rgba(246, 242, 233, 0.45);
  border-radius: var(--radius-sm);
}

.quick-link:hover {
  color: var(--ink-green);
  background-color: var(--mustard);
  border-color: var(--mustard);
}

.main-nav.site-nav {
  background-color: var(--ink-green-deep);
}

.nav-toggle {
  display: none;
}

.nav-drawer {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 14px;
  font-size: 14.5px;
  color: var(--teal-pale);
  border-bottom: 2px solid transparent;
}

.nav-item:hover {
  color: var(--white);
  background-color: rgba(207, 227, 218, 0.12);
}

.nav-item.is-current {
  color: var(--white);
  font-weight: 600;
  border-bottom-color: var(--mustard);
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 56px;
}

.inner-main {
  padding-top: 18px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 14px 0 6px;
  font-size: 13px;
  color: var(--graphite-soft);
}

.breadcrumb a {
  color: var(--ink-green);
  border-bottom: 1px solid transparent;
}

.breadcrumb a:hover {
  color: var(--brick);
  border-bottom-color: var(--brick);
}

.breadcrumb-sep {
  color: #9C9484;
}

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

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

.page-header {
  padding: 10px 0 18px;
  border-bottom: 2px solid var(--line);
}

.page-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink-green);
}

.site-footer {
  flex-shrink: 0;
  background-color: var(--ink-green);
  color: var(--cream);
  border-top: 3px solid var(--mustard);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px 32px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 28px;
}

.footer-title {
  margin-bottom: 12px;
  font-size: 15px;
  font-weight: 700;
  color: var(--mustard);
}

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

.footer-list a {
  display: inline-block;
  padding: 2px 0;
  font-size: 14px;
  color: var(--teal-pale);
}

.footer-list a:hover {
  color: var(--white);
}

.footer-note {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--teal-pale);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 24px 22px;
  border-top: 1px solid rgba(207, 227, 218, 0.25);
}

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

.footer-copy {
  font-size: 13px;
  color: var(--teal-pale);
}

/* --------------------------------------------------------------------------
   components：通用组件（区块头 / 按钮 / 表格 / 图注 / 折叠 / 入口带）
   -------------------------------------------------------------------------- */
.section-head {
  max-width: var(--measure);
  margin-bottom: 22px;
}

.section-head h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.section-head p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--graphite-soft);
}

.section-title {
  font-size: 24px;
  margin-bottom: 8px;
}

.section-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--graphite-soft);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  color: var(--white);
  background-color: var(--brick);
  border-color: var(--brick);
}

.btn-primary:hover {
  color: var(--white);
  background-color: var(--brick-deep);
  border-color: var(--brick-deep);
}

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

.btn-ghost:hover {
  color: var(--white);
  background-color: var(--ink-green);
}

.inline-link {
  margin-top: 18px;
  font-size: 14.5px;
}

.inline-link a {
  color: var(--brick);
  font-weight: 600;
  border-bottom: 1px solid rgba(196, 85, 59, 0.4);
}

.inline-link a:hover {
  color: var(--brick-deep);
  border-bottom-color: var(--brick-deep);
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--white);
}

.table-note {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--graphite-soft);
}

.table-note a {
  color: var(--brick);
  border-bottom: 1px solid rgba(196, 85, 59, 0.4);
}

.table-note a:hover {
  color: var(--brick-deep);
}

table caption {
  padding: 14px 16px;
  font-size: 14px;
  text-align: left;
  color: var(--graphite-soft);
}

table th,
table td {
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.65;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
  font-variant-numeric: tabular-nums;
}

table thead th {
  font-weight: 700;
  color: var(--ink-green);
  background-color: var(--cream-warm);
  border-bottom: 2px solid var(--mustard);
  white-space: nowrap;
}

table tbody th {
  font-weight: 600;
  color: var(--ink-green);
  background-color: rgba(246, 242, 233, 0.7);
}

table tbody tr:nth-child(even) td {
  background-color: rgba(207, 227, 218, 0.18);
}

table tbody tr:hover td,
table tbody tr:hover th {
  background-color: var(--teal-pale);
}

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

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

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

.related-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px 32px;
  align-items: center;
  margin-top: 48px;
  padding: 26px 28px;
  background-color: var(--cream-warm);
  border: 1px solid var(--line);
  border-left: 5px solid var(--mustard);
  border-radius: var(--radius);
}

.related-copy h2 {
  font-size: 20px;
  margin-bottom: 6px;
}

.related-copy p {
  font-size: 14.5px;
  color: var(--graphite-soft);
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.related-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-green);
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.related-link:hover {
  color: var(--white);
  background-color: var(--ink-green);
  border-color: var(--ink-green);
}

nav.related-links {
  align-items: center;
  margin-top: 24px;
  padding: 14px 18px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-links-label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--graphite-soft);
}

.related-links-item {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 4px 12px;
  font-size: 14px;
  color: var(--ink-green);
  background-color: var(--cream);
  border-radius: var(--radius-sm);
}

.related-links-item:hover {
  color: var(--white);
  background-color: var(--brick);
}

/* 页内目录 */
.page-toc {
  margin: 18px 0 0;
  padding: 14px 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.toc-title {
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-green);
}

.toc-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.toc-list a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 4px 12px;
  font-size: 13.5px;
  color: var(--ink-green);
  background-color: var(--cream);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
}

.toc-list a:hover {
  color: var(--white);
  background-color: var(--ink-green);
  border-color: var(--ink-green);
}

/* 页头说明区（内页共用） */
.page-head {
  padding: 22px 0 4px;
}

.page-lead,
.page-lede {
  max-width: var(--measure);
  font-size: 16px;
  line-height: 1.8;
  color: var(--graphite-soft);
}

.page-eyebrow {
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brick);
}

.checklist {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px 24px;
  margin-top: 20px;
}

.checklist li {
  position: relative;
  padding: 10px 14px 10px 34px;
  font-size: 14.5px;
  line-height: 1.7;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.checklist li::before {
  content: "";
  position: absolute;
  top: 18px;
  left: 14px;
  width: 9px;
  height: 9px;
  background-color: var(--mustard);
  border-radius: 2px;
}

.checklist li strong {
  color: var(--ink-green);
}

/* --------------------------------------------------------------------------
   pages：首页
   -------------------------------------------------------------------------- */
.home-main {
  padding-top: 26px;
}

/* 首屏 */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 32px 40px;
  align-items: start;
  padding: 8px 0 44px;
}

.hero-copy {
  padding-top: 6px;
}

.hero-eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-green);
  background-color: var(--teal-pale);
  border-radius: var(--radius-sm);
}

.hero-title {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.28;
  margin-bottom: 16px;
}

.hero-lead {
  max-width: 560px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--graphite-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.hero-visual {
  padding: 10px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.hero-caption {
  margin-top: 10px;
  padding: 8px 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-green);
  background-color: var(--teal-pale);
  border-radius: var(--radius-sm);
}

/* 场景索引 */
.scene-index {
  padding: 36px 0 12px;
  border-top: 1px solid var(--line);
}

.scene-rows {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.scene-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 200px) minmax(0, 1fr) auto;
  gap: 8px 20px;
  align-items: center;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line);
}

.scene-no {
  font-size: 20px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--brick);
}

.scene-name {
  font-size: 18px;
  color: var(--ink-green);
}

.scene-task {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--graphite-soft);
}

.scene-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  color: var(--ink-green);
  border: 1px solid var(--ink-green);
  border-radius: var(--radius-sm);
}

.scene-link:hover {
  color: var(--white);
  background-color: var(--ink-green);
}

.scene-figure {
  margin-top: 24px;
}

.scene-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

/* 服务能力对照表 */
.compare-preview {
  padding: 40px 0 8px;
}

.compare-preview .compare-table {
  min-width: 720px;
}

/* 合作流程轨道 */
.process-track {
  padding: 40px 0 8px;
}

ol.process-track {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.track-item {
  position: relative;
  padding: 16px 14px 18px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-top: 4px solid var(--mustard);
  border-radius: var(--radius);
}

.track-no {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--brick);
}

.track-name {
  font-size: 16px;
  margin-bottom: 6px;
}

.track-output {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--graphite-soft);
}

/* 交付与验收双栏 */
.delivery-preview {
  padding: 40px 0 8px;
}

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

.delivery-left,
.delivery-right {
  padding: 22px 24px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.delivery-left h3,
.delivery-right h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

.delivery-left {
  border-top: 4px solid var(--ink-green);
}

.delivery-right {
  border-top: 4px solid var(--brick);
}

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

.delivery-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--graphite);
}

.delivery-list li::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 2px;
  width: 8px;
  height: 8px;
  border: 2px solid var(--mustard);
  border-radius: 50%;
}

/* 需求准备六项清单 */
.brief-preview {
  padding: 40px 0 8px;
}

.brief-fields {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background-color: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.brief-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background-color: var(--white);
}

.brief-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-green);
}

.brief-impact {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--graphite-soft);
}

/* 常见问题预览 */
.faq-preview {
  padding: 40px 0 8px;
}

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

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

.faq-preview .faq-question {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

.faq-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  min-height: 52px;
  padding: 12px 18px;
  text-align: left;
  color: var(--ink-green);
  background-color: transparent;
  border: 0;
}

.faq-toggle::after {
  content: "+";
  flex-shrink: 0;
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  color: var(--brick);
}

.faq-toggle[aria-expanded="true"] {
  background-color: var(--cream-warm);
}

.faq-toggle[aria-expanded="true"]::after {
  content: "−";
}

.faq-toggle:hover {
  color: var(--brick);
}

.faq-preview .faq-answer {
  padding: 4px 18px 16px;
}

.faq-preview .faq-answer p {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--graphite-soft);
}

.faq-preview .faq-answer p + p {
  margin-top: 8px;
}

/* 服务边界通栏 */
.boundary-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px 32px;
  align-items: center;
  margin-top: 44px;
  padding: 26px 28px;
  background-color: var(--teal-pale);
  border-radius: var(--radius);
}

.boundary-copy h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.boundary-copy p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-green);
}

.boundary-copy p + p {
  margin-top: 6px;
}

.boundary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 20px;
  font-size: 14.5px;
  font-weight: 600;
  white-space: nowrap;
  color: var(--white);
  background-color: var(--ink-green);
  border-radius: var(--radius-sm);
}

.boundary-link:hover {
  color: var(--white);
  background-color: var(--brick);
}

/* --------------------------------------------------------------------------
   pages：场景服务（scenes）
   -------------------------------------------------------------------------- */
.group-brand,
.group-org,
.group-event,
.group-ops,
.selector-steps {
  padding: 34px 0 6px;
}

.group-head {
  max-width: var(--measure);
  margin-bottom: 20px;
}

.group-tag {
  display: inline-block;
  margin-bottom: 8px;
  padding: 3px 10px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-green);
  background-color: var(--mustard);
  border-radius: var(--radius-sm);
}

.group-head h2 {
  font-size: 23px;
  margin-bottom: 8px;
}

.group-head p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--graphite-soft);
}

/* 品牌条目：编号列表 */
.entry-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.entry-list .entry {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 18px 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--brick);
  border-radius: var(--radius);
}

.entry-list .entry-no {
  grid-row: 1 / span 2;
  font-size: 20px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--brick);
}

.entry-list .entry-name {
  font-size: 17px;
  margin-bottom: 6px;
}

.entry-fields {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 6px 14px;
  font-size: 14px;
  line-height: 1.7;
}

.entry-fields dt {
  font-weight: 600;
  color: var(--ink-green);
}

.entry-fields dd {
  color: var(--graphite-soft);
}

/* 组织条目：双列 */
.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

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

.two-col .entry {
  height: 100%;
  padding: 20px 22px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-top: 4px solid var(--mustard);
  border-radius: var(--radius);
}

.two-col .entry-name {
  font-size: 17px;
  margin-bottom: 10px;
}

.two-col .entry-fields {
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 8px 12px;
  font-size: 14px;
}

/* 活动条目：图 + 阶段列表 */
.group-media img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

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

.group-event .stage {
  padding: 16px 18px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.group-event .stage-title {
  font-size: 16px;
  margin-bottom: 6px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--teal-pale);
}

.group-event .stage p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite-soft);
}

/* 常态内容：检查清单 */
.ops-checklist {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 20px;
}

.ops-checklist li {
  position: relative;
  padding: 12px 16px 12px 38px;
  font-size: 14.5px;
  line-height: 1.7;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.ops-checklist li::before {
  content: "✓";
  position: absolute;
  top: 11px;
  left: 14px;
  font-size: 15px;
  font-weight: 700;
  color: var(--brick);
}

.boundary-note {
  margin-top: 16px;
  padding: 14px 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-green);
  background-color: var(--teal-pale);
  border-left: 4px solid var(--ink-green);
  border-radius: var(--radius-sm);
}

/* 场景选择三步 */
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.selector-steps .step {
  padding: 18px 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.selector-steps .step-no {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--brick);
}

.selector-steps .step-title {
  font-size: 16px;
  margin-bottom: 6px;
}

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

/* --------------------------------------------------------------------------
   pages：服务对照（compare）
   -------------------------------------------------------------------------- */
.page-head .page-lead a {
  color: var(--brick);
  border-bottom: 1px solid rgba(196, 85, 59, 0.4);
}

.compare-table {
  padding: 30px 0 6px;
}

.compare-table .table-wrap table {
  min-width: 900px;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 28px 32px;
  align-items: start;
  padding: 32px 0 6px;
}

.reading-main h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.reading-main p {
  max-width: var(--measure);
  font-size: 15px;
  line-height: 1.85;
  color: var(--graphite-soft);
}

.reading-main p + p {
  margin-top: 12px;
}

.reading-guide {
  padding: 20px 22px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-top: 4px solid var(--ink-green);
  border-radius: var(--radius);
}

.reading-guide h2 {
  font-size: 18px;
  margin-bottom: 12px;
}

.guide-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
  counter-reset: guide;
}

.guide-steps li {
  position: relative;
  padding-left: 30px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite-soft);
  counter-increment: guide;
}

.guide-steps li::before {
  content: counter(guide);
  position: absolute;
  top: 2px;
  left: 0;
  width: 20px;
  height: 20px;
  font-size: 12px;
  font-weight: 700;
  line-height: 20px;
  text-align: center;
  color: var(--white);
  background-color: var(--brick);
  border-radius: 50%;
}

.guide-steps strong {
  color: var(--ink-green);
}

.guide-note {
  margin-top: 14px;
  padding-top: 12px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--graphite-soft);
  border-top: 1px dashed var(--line);
}

.guide-note a {
  color: var(--brick);
  border-bottom: 1px solid rgba(196, 85, 59, 0.4);
}

.misfit {
  padding: 36px 0 6px;
}

.misfit-media img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

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

.misfit-item {
  padding: 18px 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.misfit-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--mustard);
}

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

.misfit-item p + p {
  margin-top: 8px;
}

.next-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px 32px;
  align-items: center;
  margin-top: 40px;
  padding: 26px 28px;
  background-color: var(--cream-warm);
  border: 1px solid var(--line);
  border-left: 5px solid var(--mustard);
  border-radius: var(--radius);
}

.next-copy h2 {
  font-size: 20px;
  margin-bottom: 6px;
}

.next-copy p {
  font-size: 14.5px;
  color: var(--graphite-soft);
}

.next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.next-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-green);
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.next-link:hover {
  color: var(--white);
  background-color: var(--ink-green);
  border-color: var(--ink-green);
}

/* --------------------------------------------------------------------------
   pages：合作流程（process）
   -------------------------------------------------------------------------- */
.page-head-copy {
  max-width: var(--measure);
}

.overview-strip {
  padding: 30px 0 6px;
}

.overview {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.overview-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 14px;
  background-color: var(--ink-green);
  border-radius: var(--radius);
}

.overview-no {
  font-size: 12.5px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--mustard);
}

.overview-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--cream);
}

.stage-list {
  padding: 34px 0 6px;
}

ol.stage-track {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.stage-track .stage {
  display: grid;
  grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
  gap: 10px 28px;
  padding: 20px 24px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-left: 5px solid var(--brick);
  border-radius: var(--radius);
}

.stage-track .stage-head {
  grid-row: 1 / span 3;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-right: 20px;
  border-right: 1px dashed var(--line);
}

.stage-track .stage-no {
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--brick);
}

.stage-track .stage-title {
  font-size: 18px;
}

.stage-track .stage-parties,
.stage-track .stage-output,
.stage-track .stage-check {
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite-soft);
}

.stage-track .stage-label {
  display: inline-block;
  min-width: 62px;
  margin-right: 8px;
  font-weight: 600;
  color: var(--ink-green);
}

.stage-figure {
  margin-top: 24px;
}

.stage-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.responsibilities {
  padding: 36px 0 6px;
}

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

.duty-left,
.duty-right {
  padding: 20px 22px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.duty-left {
  border-top: 4px solid var(--ink-green);
}

.duty-right {
  border-top: 4px solid var(--mustard);
}

.duty-left h3,
.duty-right h3 {
  font-size: 17px;
  margin-bottom: 12px;
}

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

.duty-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--graphite);
}

.duty-list li::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 2px;
  width: 8px;
  height: 8px;
  background-color: var(--teal-pale);
  border: 2px solid var(--ink-green);
  border-radius: 50%;
}

.pause-band {
  padding: 36px 0 6px;
}

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

.pause-item {
  padding: 16px 18px;
  background-color: var(--cream-warm);
  border: 1px solid var(--line);
  border-left: 4px solid var(--mustard);
  border-radius: var(--radius);
}

.pause-item h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.pause-item p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite-soft);
}

/* --------------------------------------------------------------------------
   pages：交付与验收（delivery）
   -------------------------------------------------------------------------- */
.deliverable-table {
  padding: 30px 0 6px;
}

.deliverable-grid {
  min-width: 680px;
}

.table-caption {
  font-weight: 600;
  color: var(--ink-green);
}

.acceptance-list {
  padding: 36px 0 6px;
}

.acceptance-media img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.change-compare {
  padding: 36px 0 6px;
}

.change-compare > .section-head {
  margin-bottom: 18px;
}

.change-left,
.change-right {
  display: inline-block;
  vertical-align: top;
  width: calc(50% - 10px);
  padding: 20px 22px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.change-left {
  margin-right: 16px;
  border-top: 4px solid var(--ink-green);
}

.change-right {
  border-top: 4px solid var(--brick);
}

.change-left h3,
.change-right h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.change-left > p,
.change-right > p {
  margin-bottom: 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite-soft);
}

.change-left ul,
.change-right ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.change-left li,
.change-right li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
}

.change-left li::before,
.change-right li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 2px;
}

.change-left li::before {
  background-color: var(--ink-green);
}

.change-right li::before {
  background-color: var(--brick);
}

.archive-rules {
  padding: 36px 0 6px;
}

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

.archive-list li {
  position: relative;
  padding: 18px 20px 18px 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite-soft);
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  counter-increment: archive;
}

.archive-list li::before {
  content: counter(archive, decimal-leading-zero);
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--brick);
}

.archive-list strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
  color: var(--ink-green);
}

/* --------------------------------------------------------------------------
   pages：需求准备（brief）
   -------------------------------------------------------------------------- */
.field-list {
  padding: 30px 0 6px;
}

.field-figure {
  margin-bottom: 22px;
}

.field-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.field-dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background-color: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.field-item {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 4px 16px;
  align-items: baseline;
  padding: 16px 18px;
  background-color: var(--white);
}

.field-item dt {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-green);
}

.field-item dd {
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite-soft);
}

.self-check {
  padding: 36px 0 6px;
}

.approval-chain {
  padding: 36px 0 6px;
}

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

.chain-item {
  position: relative;
  padding: 18px 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-top: 4px solid var(--mustard);
  border-radius: var(--radius);
}

.chain-no {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--brick);
}

.chain-title {
  font-size: 16px;
  margin-bottom: 6px;
}

.chain-item p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite-soft);
}

/* --------------------------------------------------------------------------
   pages：常见问题（faq）
   -------------------------------------------------------------------------- */
.page-figure {
  margin-top: 18px;
}

.page-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.faq-selection,
.faq-production,
.faq-boundary {
  padding: 34px 0 6px;
}

.faq-selection h2,
.faq-production h2,
.faq-boundary h2 {
  font-size: 22px;
  margin-bottom: 8px;
}

.section-intro {
  max-width: var(--measure);
  margin-bottom: 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--graphite-soft);
}

.section-intro a {
  color: var(--brick);
  border-bottom: 1px solid rgba(196, 85, 59, 0.4);
}

.faq-selection .faq-item,
.faq-production .faq-item,
.faq-boundary .faq-item {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-selection .faq-question,
.faq-production .faq-question,
.faq-boundary .faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 54px;
  padding: 14px 18px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink-green);
  background-color: transparent;
  cursor: pointer;
  list-style: none;
}

.faq-selection .faq-question::-webkit-details-marker,
.faq-production .faq-question::-webkit-details-marker,
.faq-boundary .faq-question::-webkit-details-marker {
  display: none;
}

.faq-selection .faq-question::after,
.faq-production .faq-question::after,
.faq-boundary .faq-question::after {
  content: "+";
  flex-shrink: 0;
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  color: var(--brick);
}

.faq-selection .faq-item[open] .faq-question,
.faq-production .faq-item[open] .faq-question,
.faq-boundary .faq-item[open] .faq-question {
  background-color: var(--cream-warm);
}

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

.faq-selection .faq-question:hover,
.faq-production .faq-question:hover,
.faq-boundary .faq-question:hover {
  color: var(--brick);
}

.faq-selection .faq-answer,
.faq-production .faq-answer,
.faq-boundary .faq-answer {
  padding: 4px 18px 16px;
}

.faq-selection .faq-answer p,
.faq-production .faq-answer p,
.faq-boundary .faq-answer p {
  max-width: var(--measure);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--graphite-soft);
}

.faq-selection .faq-answer p + p,
.faq-production .faq-answer p + p,
.faq-boundary .faq-answer p + p {
  margin-top: 8px;
}

.ask-band {
  margin-top: 40px;
  padding: 26px 28px;
  background-color: var(--teal-pale);
  border-radius: var(--radius);
}

.ask-band h2 {
  font-size: 20px;
  margin-bottom: 6px;
}

.ask-copy {
  max-width: var(--measure);
  margin-bottom: 14px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-green);
}

.ask-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ask-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  background-color: var(--ink-green);
  border-radius: var(--radius-sm);
}

.ask-links a:hover {
  color: var(--white);
  background-color: var(--brick);
}

/* --------------------------------------------------------------------------
   pages：关于与边界（about）
   -------------------------------------------------------------------------- */
.positioning {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 28px 36px;
  align-items: start;
  padding: 32px 0 6px;
}

.positioning-text h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.positioning-text p {
  max-width: 560px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--graphite-soft);
}

.positioning-text p + p {
  margin-top: 12px;
}

.positioning-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.methods,
.terminology,
.boundaries,
.maintenance {
  padding: 36px 0 6px;
}

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

.method-item {
  padding: 20px 22px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-left: 5px solid var(--mustard);
  border-radius: var(--radius);
}

.method-no {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--brick);
}

.method-title {
  font-size: 17px;
  margin-bottom: 6px;
}

.method-text {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--graphite-soft);
}

.term-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background-color: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.term-item {
  padding: 16px 18px;
  background-color: var(--white);
}

.term-name {
  margin-bottom: 4px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-green);
}

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

.boundary-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.boundary-item {
  padding: 18px 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-top: 4px solid var(--brick);
  border-radius: var(--radius);
}

.boundary-title {
  font-size: 16px;
  margin-bottom: 6px;
}

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

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

.maintenance-item {
  padding: 16px 18px;
  background-color: var(--cream-warm);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.maintenance-title {
  font-size: 15px;
  margin-bottom: 6px;
}

.maintenance-item p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite-soft);
}

/* --------------------------------------------------------------------------
   pages：404
   -------------------------------------------------------------------------- */
.error-main {
  display: flex;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 64px;
}

.error-panel {
  width: 100%;
  max-width: 720px;
  padding: 36px 32px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-top: 6px solid var(--mustard);
  border-radius: var(--radius);
}

.error-code {
  margin-bottom: 6px;
  font-size: 44px;
  font-weight: 700;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--brick);
}

.error-title {
  font-size: clamp(24px, 3.4vw, 32px);
  margin-bottom: 10px;
}

.error-text {
  max-width: 560px;
  margin-bottom: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--graphite-soft);
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.error-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--ink-green);
  background-color: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.error-links a:hover {
  color: var(--white);
  background-color: var(--ink-green);
  border-color: var(--ink-green);
}

.error-home {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  background-color: var(--brick);
  border-radius: var(--radius-sm);
}

.error-home:hover {
  color: var(--white);
  background-color: var(--brick-deep);
}

/* --------------------------------------------------------------------------
   responsive：1024px / 720px / 480px
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .hero-lead {
    max-width: none;
  }

  .scene-row {
    grid-template-columns: 44px minmax(0, 170px) minmax(0, 1fr);
    row-gap: 10px;
  }

  .scene-link {
    grid-column: 2 / -1;
    justify-self: start;
  }

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

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

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

  .reading-guide {
    max-width: 100%;
  }

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

  .positioning-text p {
    max-width: none;
  }

  .method-list,
  .term-list,
  .boundary-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .maintenance-list,
  .group-event .stage-list,
  .steps,
  .pause-list,
  .archive-list,
  .chain-list,
  .overview,
  .misfit-list,
  .duty-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .overview-item:last-child {
    grid-column: 1 / -1;
  }

  .stage-track .stage {
    grid-template-columns: minmax(0, 190px) minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  body {
    font-size: 15.5px;
  }

  .header-top {
    padding: 12px 16px 10px;
  }

  .brand-name {
    font-size: 19px;
  }

  .header-quick {
    gap: 8px;
  }

  .quick-link {
    min-height: 36px;
    padding: 4px 12px;
    font-size: 13px;
  }

  .nav-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    min-height: 48px;
    padding: 10px 16px;
    font-size: 15px;
    font-weight: 600;
    color: var(--cream);
    background-color: transparent;
    border: 0;
    text-align: left;
  }

  .nav-toggle::before {
    content: "";
    width: 18px;
    height: 2px;
    background-color: var(--mustard);
    box-shadow: 0 6px 0 var(--mustard), 0 -6px 0 var(--mustard);
  }

  .nav-toggle[aria-expanded="true"]::before {
    background-color: var(--brick);
    box-shadow: 0 6px 0 var(--brick), 0 -6px 0 var(--brick);
  }

  .nav-drawer {
    padding: 0;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 0 8px 10px;
  }

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

  .nav-item {
    min-height: 48px;
    padding: 10px 12px;
    font-size: 15px;
    border-bottom: 1px solid rgba(207, 227, 218, 0.18);
    border-radius: 0;
  }

  .nav-item.is-current {
    border-bottom-color: var(--mustard);
  }

  .site-main {
    padding: 0 16px 44px;
  }

  .inner-main {
    padding-top: 12px;
  }

  .page-header {
    padding: 8px 0 14px;
  }

  .page-title {
    font-size: clamp(24px, 6.4vw, 30px);
  }

  .page-head {
    padding: 16px 0 2px;
  }

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

  .toc-list {
    gap: 8px;
  }

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

  .section-head h2,
  .section-title,
  .group-head h2,
  .faq-selection h2,
  .faq-production h2,
  .faq-boundary h2,
  .reading-main h2,
  .positioning-text h2 {
    font-size: 20px;
  }

  .home-main {
    padding-top: 18px;
  }

  .hero {
    padding-bottom: 32px;
  }

  .hero-title {
    font-size: clamp(25px, 6.6vw, 32px);
  }

  .hero-actions .btn {
    flex: 1 1 auto;
    min-width: 150px;
  }

  .scene-index,
  .compare-preview,
  .process-track,
  .delivery-preview,
  .brief-preview,
  .faq-preview,
  .group-brand,
  .group-org,
  .group-event,
  .group-ops,
  .selector-steps,
  .overview-strip,
  .stage-list,
  .responsibilities,
  .pause-band,
  .deliverable-table,
  .acceptance-list,
  .change-compare,
  .archive-rules,
  .field-list,
  .self-check,
  .approval-chain,
  .faq-selection,
  .faq-production,
  .faq-boundary,
  .methods,
  .terminology,
  .boundaries,
  .maintenance,
  .misfit,
  .compare-table,
  .page-layout {
    padding-top: 28px;
  }

  .scene-row {
    grid-template-columns: 40px minmax(0, 1fr);
    padding: 16px 2px;
  }

  .scene-no {
    font-size: 18px;
  }

  .scene-name {
    font-size: 17px;
  }

  .scene-task {
    grid-column: 2 / -1;
  }

  .scene-link {
    grid-column: 2 / -1;
    min-height: 44px;
  }

  .scene-figure img,
  .group-media img,
  .misfit-media img,
  .stage-figure img,
  .acceptance-media img,
  .field-figure img,
  .page-figure img {
    aspect-ratio: 16 / 10;
  }

  .table-wrap {
    border-radius: var(--radius-sm);
  }

  table th,
  table td {
    padding: 10px 12px;
    font-size: 13.5px;
  }

  .compare-preview .compare-table,
  .compare-table .table-wrap table,
  .deliverable-grid {
    min-width: 640px;
  }

  ol.process-track,
  .delivery-cols,
  .brief-fields,
  .two-col,
  .group-event .stage-list,
  .ops-checklist,
  .steps,
  .misfit-list,
  .overview,
  .duty-grid,
  .pause-list,
  .archive-list,
  .field-dl,
  .chain-list,
  .method-list,
  .term-list,
  .boundary-list,
  .maintenance-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .overview-item:last-child {
    grid-column: auto;
  }

  .delivery-left,
  .delivery-right,
  .reading-guide,
  .duty-left,
  .duty-right {
    padding: 18px 18px;
  }

  .entry-list .entry {
    grid-template-columns: 34px minmax(0, 1fr);
    padding: 16px 16px;
  }

  .entry-fields,
  .two-col .entry-fields {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .entry-fields dt {
    margin-top: 6px;
    font-size: 13.5px;
  }

  .entry-fields dd {
    font-size: 14px;
  }

  .stage-track .stage {
    grid-template-columns: minmax(0, 1fr);
    padding: 18px 18px;
  }

  .stage-track .stage-head {
    grid-row: auto;
    padding-right: 0;
    padding-bottom: 10px;
    border-right: 0;
    border-bottom: 1px dashed var(--line);
  }

  .stage-track .stage-label {
    min-width: 56px;
  }

  .change-left,
  .change-right {
    display: block;
    width: 100%;
    margin-right: 0;
  }

  .change-left {
    margin-bottom: 14px;
  }

  .field-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
    padding: 14px 16px;
  }

  .related-band,
  .next-band,
  .boundary-band {
    grid-template-columns: minmax(0, 1fr);
    padding: 20px 18px;
    margin-top: 32px;
  }

  .related-links,
  .next-links,
  .ask-links {
    width: 100%;
  }

  .related-link,
  .next-link,
  .ask-links a {
    flex: 1 1 46%;
    justify-content: center;
    min-height: 44px;
  }

  .boundary-link {
    justify-self: start;
    min-height: 46px;
  }

  .faq-toggle,
  .faq-selection .faq-question,
  .faq-production .faq-question,
  .faq-boundary .faq-question {
    min-height: 56px;
    padding: 12px 16px;
    font-size: 15px;
  }

  .faq-preview .faq-answer,
  .faq-selection .faq-answer,
  .faq-production .faq-answer,
  .faq-boundary .faq-answer {
    padding: 4px 16px 14px;
  }

  .ask-band {
    padding: 20px 18px;
    margin-top: 30px;
  }

  .error-panel {
    padding: 26px 20px;
  }

  .error-code {
    font-size: 36px;
  }

  .error-links a {
    flex: 1 1 46%;
    justify-content: center;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 20px;
    padding: 30px 16px 22px;
  }

  .footer-list a {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 14px 16px 20px;
  }
}

@media (max-width: 480px) {
  .header-quick {
    width: 100%;
  }

  .quick-link {
    flex: 1 1 0;
    justify-content: center;
  }

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

  .faq-toggle,
  .faq-selection .faq-question,
  .faq-production .faq-question,
  .faq-boundary .faq-question {
    align-items: flex-start;
  }

  .related-link,
  .next-link,
  .ask-links a,
  .error-links a {
    flex: 1 1 100%;
  }

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