/* ==========================================================================
   超碰视频 giblygame.com — 全站样式
   base / layout / components / pages / responsive
   ========================================================================== */

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

:root {
  --c-bg: #ffffff;
  --c-bg-soft: #f4f6f8;
  --c-brand: #1450a3;
  --c-brand-dark: #0f3c7d;
  --c-accent: #ff7a2f;
  --c-text: #101828;
  --c-text-soft: #667085;
  --c-line: #d9e1ea;
  --c-line-soft: #e8edf2;
  --radius: 8px;
  --radius-sm: 6px;
  --shadow-card: 0 1px 2px rgba(16, 24, 40, 0.05), 0 6px 18px rgba(16, 24, 40, 0.05);
  --shadow-hover: 0 2px 4px rgba(16, 24, 40, 0.06), 0 12px 26px rgba(16, 24, 40, 0.09);
  --w-wide: 1180px;
  --w-narrow: 960px;
  --header-h: 64px;
  --gutter: 24px;
}

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

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

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 12px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--c-text);
}

h1 {
  font-size: 34px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin: 0 0 14px;
}

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

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

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

a:hover,
a:focus-visible {
  color: var(--c-accent);
}

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

figure {
  margin: 0;
}

figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-text-soft);
}

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

dl {
  margin: 0;
}

dt {
  font-weight: 600;
  color: var(--c-text);
}

dd {
  margin: 0 0 10px;
  color: var(--c-text-soft);
}

strong {
  font-weight: 600;
}

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

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 120;
  padding: 10px 16px;
  background: var(--c-brand);
  color: #fff;
  border-radius: var(--radius-sm);
  transition: top 0.18s ease;
}

.skip-link:focus {
  top: 12px;
  color: #fff;
}

/* --------------------------------------------------------------------------
   layout — 全站骨架
   -------------------------------------------------------------------------- */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--c-bg);
  color: var(--c-text);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--c-line);
  backdrop-filter: saturate(150%) blur(6px);
}

.header-inner {
  max-width: var(--w-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 20px;
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.inner-main {
  max-width: var(--w-wide);
  margin: 0 auto;
  padding: 0 var(--gutter) 72px;
}

.section-inner {
  max-width: var(--w-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 268px;
  gap: 40px;
  align-items: start;
}

.sidebar-left .page-layout,
.page-layout.sidebar-left {
  grid-template-columns: 268px minmax(0, 1fr);
}

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

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

/* --------------------------------------------------------------------------
   components — 页头与导航
   -------------------------------------------------------------------------- */

.brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  flex-shrink: 0;
  padding: 6px 0;
  min-height: 44px;
  color: var(--c-text);
}

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

.brand-name {
  font-size: 19px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--c-brand);
}

.brand-tag {
  font-size: 12px;
  line-height: 1.3;
  color: var(--c-text-soft);
}

.primary-nav {
  margin-left: auto;
}

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

.nav-list li {
  display: block;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 15px;
  color: var(--c-text);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: background 0.18s ease, color 0.18s ease;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  background: var(--c-bg-soft);
  color: var(--c-brand);
}

.nav-list a.is-current {
  color: var(--c-brand);
  font-weight: 600;
  background: rgba(20, 80, 163, 0.08);
}

.header-cta {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 500;
  color: #fff;
  background: var(--c-brand);
  border-radius: var(--radius-sm);
  transition: background 0.18s ease;
}

.header-cta:hover,
.header-cta:focus-visible {
  background: var(--c-brand-dark);
  color: #fff;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: #fff;
}

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

/* --------------------------------------------------------------------------
   components — 按钮
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background: var(--c-brand);
  color: #fff;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--c-brand-dark);
  color: #fff;
}

.btn-ghost {
  background: #fff;
  color: var(--c-brand);
  border-color: var(--c-line);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--c-brand);
  color: var(--c-brand-dark);
}

/* --------------------------------------------------------------------------
   components — 面包屑 / 页面标题区
   -------------------------------------------------------------------------- */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-text-soft);
}

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

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

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

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

.page-header {
  padding: 14px 0 22px;
  border-bottom: 1px solid var(--c-line);
  margin-bottom: 36px;
}

.page-title {
  margin: 0;
  font-size: 34px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--c-text);
}

/* --------------------------------------------------------------------------
   components — 通用标题与说明
   -------------------------------------------------------------------------- */

.section-title {
  margin: 0 0 10px;
  font-size: 24px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--c-text);
}

.section-desc,
.section-intro,
.section-lead {
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text-soft);
  max-width: 820px;
}

.section-head {
  margin-bottom: 28px;
}

.section-head h2 {
  margin: 0 0 10px;
  font-size: 24px;
  font-weight: 600;
}

.section-head p {
  margin: 0;
  font-size: 16px;
  color: var(--c-text-soft);
  max-width: 820px;
}

/* --------------------------------------------------------------------------
   components — 图片容器
   -------------------------------------------------------------------------- */

.hero-visual,
.page-hero-media,
.service-media,
.delivery-media,
.content-media {
  overflow: hidden;
}

.hero-visual img,
.page-hero-media img,
.service-media img,
.delivery-media img,
.content-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--c-bg-soft);
}

/* --------------------------------------------------------------------------
   components — 列表 / 卡片基础
   -------------------------------------------------------------------------- */

.capability-list,
.detail-list,
.coop-points,
.module-list,
.collab-list,
.hero-points {
  display: grid;
  gap: 8px;
}

.capability-list li,
.detail-list li,
.coop-points li,
.module-list li,
.collab-list li,
.hero-points li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.capability-list li::before,
.detail-list li::before,
.coop-points li::before,
.module-list li::before,
.collab-list li::before,
.hero-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-brand);
}

/* 相关推荐 —— 卡片式 */
.related-section,
.related-block,
.related {
  margin-top: 56px;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.related-item {
  min-width: 0;
}

.related-item a {
  display: block;
  height: 100%;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.related-item a:hover,
.related-item a:focus-visible {
  border-color: var(--c-brand);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.related-item h3,
.related-name {
  display: block;
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-text);
}

.related-item p,
.related-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.related-item a:hover .related-name,
.related-item a:hover h3 {
  color: var(--c-brand);
}

/* 相关链接条 */
.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  max-width: var(--w-wide);
  margin: 48px auto 0;
  padding: 20px var(--gutter) 0;
  border-top: 1px solid var(--c-line);
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
}

.related-links-item {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  font-size: 14px;
  color: var(--c-brand);
  background: var(--c-bg-soft);
  border-radius: 999px;
  transition: background 0.18s ease, color 0.18s ease;
}

.related-links-item:hover,
.related-links-item:focus-visible {
  background: rgba(20, 80, 163, 0.1);
  color: var(--c-brand-dark);
}

/* --------------------------------------------------------------------------
   components — 侧栏
   -------------------------------------------------------------------------- */

.side-index,
.page-aside {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  align-self: start;
  padding: 22px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
}

.side-index-title,
.aside-title {
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-text);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--c-line);
}

.side-index-list,
.aside-nav-list,
.aside-nav,
.toc-list,
.toc-nav {
  display: grid;
  gap: 2px;
}

.side-index-list a,
.aside-nav-list a,
.aside-nav a,
.toc-list a,
.toc-nav a {
  display: block;
  padding: 9px 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-text-soft);
  border-radius: var(--radius-sm);
  border-left: 3px solid transparent;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.side-index-list a:hover,
.side-index-list a:focus-visible,
.aside-nav-list a:hover,
.aside-nav-list a:focus-visible,
.aside-nav a:hover,
.aside-nav a:focus-visible,
.toc-list a:hover,
.toc-list a:focus-visible,
.toc-nav a:hover,
.toc-nav a:focus-visible {
  background: #fff;
  color: var(--c-brand);
  border-left-color: var(--c-brand);
}

.side-index-list a.is-active,
.aside-nav-list a.is-active,
.aside-nav a.is-active,
.toc-list a.is-active,
.toc-nav a.is-active {
  background: #fff;
  color: var(--c-brand);
  border-left-color: var(--c-brand);
  font-weight: 600;
}

.side-index-link {
  display: inline-flex;
  align-items: center;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-brand);
}

.side-index-link:hover,
.side-index-link:focus-visible {
  color: var(--c-accent);
}

.aside-note {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--c-line);
}

.aside-note-title {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
}

.aside-note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-text-soft);
}

/* --------------------------------------------------------------------------
   components — FAQ
   -------------------------------------------------------------------------- */

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 880px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.faq-item[open] {
  border-color: var(--c-brand);
  box-shadow: var(--shadow-card);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 56px;
  padding: 16px 22px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-text);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 400;
  line-height: 1;
  color: var(--c-brand);
  background: rgba(20, 80, 163, 0.08);
  border-radius: 50%;
  transition: transform 0.2s ease, background 0.2s ease;
}

.faq-item[open] .faq-question::after {
  content: "−";
  background: var(--c-brand);
  color: #fff;
}

.faq-answer {
  padding: 0 22px 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

.faq-answer p {
  margin: 0;
}

/* --------------------------------------------------------------------------
   components — 页脚
   -------------------------------------------------------------------------- */

.site-footer {
  flex-shrink: 0;
  margin-top: 64px;
  background: var(--c-bg-soft);
  border-top: 1px solid var(--c-line);
  color: var(--c-text-soft);
}

.footer-inner {
  max-width: var(--w-wide);
  margin: 0 auto;
  padding: 36px var(--gutter) 28px;
}

.footer-back {
  margin: 0 0 28px;
  font-size: 14px;
}

.footer-back a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  color: var(--c-brand);
  font-weight: 500;
}

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

.footer-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--c-line);
}

.footer-col-title {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
}

.footer-links {
  display: grid;
  gap: 6px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14px;
  color: var(--c-text-soft);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--c-brand);
}

.footer-bottom {
  padding-top: 22px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
}

.footer-brand {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
}

.footer-copy {
  margin: 0;
  font-size: 13px;
  color: var(--c-text-soft);
}

/* --------------------------------------------------------------------------
   pages — index.html
   -------------------------------------------------------------------------- */

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

/* 首屏 */
.hero {
  background: var(--c-bg-soft);
  border-bottom: 1px solid var(--c-line);
}

.hero-inner {
  max-width: var(--w-wide);
  margin: 0 auto;
  padding: 56px var(--gutter) 60px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}

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

.hero-eyebrow {
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-brand);
}

.hero-copy h1 {
  margin: 0 0 18px;
  font-size: 34px;
  font-weight: 600;
  line-height: 1.32;
  color: var(--c-text);
}

.hero-lead {
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-text-soft);
  max-width: 560px;
}

.hero-points {
  margin-bottom: 28px;
  max-width: 520px;
}

.hero-points li {
  font-size: 15px;
  color: var(--c-text);
}

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

.hero-visual {
  margin: 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  aspect-ratio: 4 / 3;
  background: #dfe6ee;
}

.hero-visual figcaption {
  padding: 0 2px;
}

/* 业务索引条 */
.service-index {
  padding: 64px 0;
}

.service-index-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

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

.service-index-item a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 24px 22px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.service-index-item a:hover,
.service-index-item a:focus-visible {
  border-color: var(--c-brand);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.index-num {
  font-size: 13px;
  font-weight: 600;
  color: var(--c-accent);
}

.index-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--c-text);
}

.index-note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-soft);
}

.service-index-item a:hover .index-name,
.service-index-item a:focus-visible .index-name {
  color: var(--c-brand);
}

/* 能力与流程 */
.capability-process {
  padding: 64px 0;
  background: var(--c-bg-soft);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.capability-body {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.capability-block {
  padding: 26px 28px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.capability-title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 600;
  color: var(--c-text);
}

.capability-text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-text-soft);
}

.capability-list {
  margin-bottom: 16px;
}

.capability-link {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-brand);
}

.capability-link:hover,
.capability-link:focus-visible {
  color: var(--c-accent);
}

/* 拍摄题材画廊 */
.gallery-section {
  padding: 64px 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.gallery-item {
  min-width: 0;
}

.gallery-trigger {
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
  text-align: left;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.gallery-trigger:hover,
.gallery-trigger:focus-visible {
  border-color: var(--c-brand);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.gallery-trigger img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  background: var(--c-bg-soft);
}

.gallery-caption,
.gallery-tag {
  display: block;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text);
}

.gallery-trigger:hover .gallery-caption,
.gallery-trigger:hover .gallery-tag,
.gallery-trigger:focus-visible .gallery-caption,
.gallery-trigger:focus-visible .gallery-tag {
  color: var(--c-brand);
}

.gallery-more,
.cooperation-more {
  margin: 24px 0 0;
  font-size: 15px;
}

.gallery-more a,
.cooperation-more a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  font-weight: 500;
  color: var(--c-brand);
}

.gallery-more a:hover,
.gallery-more a:focus-visible,
.cooperation-more a:hover,
.cooperation-more a:focus-visible {
  color: var(--c-accent);
}

/* 合作路径 */
.cooperation {
  padding: 64px 0;
  background: var(--c-bg-soft);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.cooperation-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.cooperation-step {
  padding: 26px 24px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  min-width: 0;
}

.cooperation-step .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 14px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--c-brand);
  border-radius: 50%;
}

.cooperation-step .step-title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
  color: var(--c-text);
}

.cooperation-step .step-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

/* 首页 FAQ */
.faq-section {
  padding: 64px 0 0;
}

/* --------------------------------------------------------------------------
   pages — cpsp/services.html
   -------------------------------------------------------------------------- */

.page-hero {
  margin-bottom: 40px;
}

.page-hero-inner {
  padding: 28px 32px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
}

.page-hero-lead {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-text-soft);
  max-width: 900px;
}

.page-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-hero-tags li {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 14px;
  font-size: 14px;
  color: var(--c-brand);
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: 999px;
}

.service-block {
  padding: 0 0 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--c-line-soft);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.service-block:last-of-type {
  border-bottom: 0;
}

.service-block-head {
  margin-bottom: 20px;
}

.service-index-no {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-accent);
}

.service-block-head h2 {
  margin: 0 0 10px;
  font-size: 24px;
  font-weight: 600;
  color: var(--c-text);
}

.service-block-lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-text-soft);
  max-width: 780px;
}

.service-media {
  margin: 0 0 24px;
  border-radius: var(--radius);
  overflow: hidden;
}

.service-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--c-bg-soft);
}

.service-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.service-detail {
  padding: 20px 22px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
  min-width: 0;
}

.service-detail h3 {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
}

.service-checklist {
  padding: 32px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
  margin-bottom: 8px;
}

.service-checklist h2 {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 600;
}

.checklist-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.service-checklist .checklist-item {
  padding: 20px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  min-width: 0;
}

.service-checklist .checklist-item h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
}

.service-checklist .checklist-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

/* --------------------------------------------------------------------------
   pages — cpsp/work.html
   -------------------------------------------------------------------------- */

.page-hero-text {
  min-width: 0;
}

.page-eyebrow {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-accent);
}

.page-lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-text-soft);
}

.page-hero .page-hero-inner:has(.page-hero-media) {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}

.page-hero .page-hero-media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.page-hero .page-hero-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--c-bg-soft);
}

.topic-index,
.topic-gallery,
.topic-notes,
.checklist {
  padding: 56px 0 0;
}

.topic-index-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.topic-index-list a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  color: var(--c-text);
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius-sm);
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.topic-index-list a:hover,
.topic-index-list a:focus-visible {
  background: #fff;
  color: var(--c-brand);
  border-color: var(--c-brand);
}

.topic-notes .topic-note {
  padding: 26px 28px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  margin-bottom: 18px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.topic-note-head {
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-line-soft);
}

.topic-note-head h3 {
  margin: 0 0 6px;
  font-size: 19px;
  font-weight: 600;
  color: var(--c-text);
}

.topic-note-meta {
  margin: 0;
  font-size: 13px;
  color: var(--c-text-soft);
}

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

.topic-note-list dt {
  font-size: 15px;
  font-weight: 600;
  color: var(--c-text);
  padding-top: 8px;
}

.topic-note-list dd {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

.checklist .checklist-items {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.checklist .checklist-item {
  padding: 20px 22px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  min-width: 0;
}

.checklist .checklist-item h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
}

.checklist .checklist-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

/* --------------------------------------------------------------------------
   pages — cpsp/process.html
   -------------------------------------------------------------------------- */

.page-head {
  margin-bottom: 32px;
}

.page-head-inner {
  padding: 24px 28px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
}

.applicable-card,
.process-steps,
.cooperation-list,
.delivery-standard,
.version-switch {
  padding: 56px 0 0;
}

.applicable-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.applicable-item {
  padding: 22px 24px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  min-width: 0;
}

.applicable-name {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-text);
}

.applicable-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

.applicable-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 0;
}

.applicable-switch a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-brand);
  background: var(--c-bg-soft);
  border-radius: 999px;
}

.applicable-switch a:hover,
.applicable-switch a:focus-visible {
  background: rgba(20, 80, 163, 0.1);
  color: var(--c-brand-dark);
}

.step-list {
  display: grid;
  gap: 18px;
  margin-top: 24px;
  counter-reset: step;
}

.step-item {
  padding: 26px 28px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.step-item .step-index {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-accent);
}

.step-item .step-name {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 600;
  color: var(--c-text);
}

.step-item .step-desc {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-text-soft);
}

.step-item .step-detail {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 6px 20px;
  padding-top: 16px;
  border-top: 1px solid var(--c-line-soft);
}

.step-item .step-detail dt {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
  padding: 4px 0;
}

.step-item .step-detail dd {
  margin: 0;
  padding: 4px 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.coop-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.coop-item {
  padding: 22px 24px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
  min-width: 0;
}

.coop-name {
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-text);
}

.delivery-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
  margin-top: 24px;
}

.delivery-media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.delivery-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--c-bg-soft);
}

.delivery-list {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.delivery-item {
  padding: 20px 22px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.delivery-name {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
}

.delivery-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

.switch-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.switch-item {
  padding: 22px 24px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  min-width: 0;
}

.switch-name {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-text);
}

.switch-text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

.switch-link {
  margin: 0;
}

.switch-link a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-brand);
}

.switch-link a:hover,
.switch-link a:focus-visible {
  color: var(--c-accent);
}

/* --------------------------------------------------------------------------
   pages — cpsp/shorts.html
   -------------------------------------------------------------------------- */

.page-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.content-block {
  padding: 0 0 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--c-line-soft);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.content-block:last-of-type {
  border-bottom: 0;
}

.block-head {
  margin-bottom: 22px;
}

.block-head h2 {
  margin: 0 0 8px;
  font-size: 24px;
  font-weight: 600;
  color: var(--c-text);
}

.block-head p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-text-soft);
  max-width: 800px;
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.module-card {
  padding: 22px 24px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
  min-width: 0;
}

.module-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-text);
}

.module-card p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

.collab-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.collab-card {
  padding: 24px 26px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  min-width: 0;
}

.collab-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-text);
}

.collab-card p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

/* --------------------------------------------------------------------------
   pages — cpsp/insights.html
   -------------------------------------------------------------------------- */

.summary-block {
  padding: 0 0 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--c-line-soft);
}

.summary-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.summary-item {
  display: flex;
  gap: 14px;
  padding: 22px 24px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
  min-width: 0;
}

.summary-index {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--c-brand);
  border-radius: 50%;
}

.summary-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

.content-section {
  padding: 0 0 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--c-line-soft);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.content-section:last-of-type {
  border-bottom: 0;
}

.method-index-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.method-index-item a {
  display: block;
  padding: 18px 20px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
  transition: background 0.18s ease, border-color 0.18s ease;
}

.method-index-item a:hover,
.method-index-item a:focus-visible {
  background: #fff;
  border-color: var(--c-brand);
}

.method-index-name {
  display: block;
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
}

.method-index-item a:hover .method-index-name,
.method-index-item a:focus-visible .method-index-name {
  color: var(--c-brand);
}

.method-index-desc {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-soft);
}

.method-article {
  padding: 26px 28px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  margin-bottom: 20px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.method-article-title {
  margin: 0 0 12px;
  font-size: 19px;
  font-weight: 600;
  color: var(--c-text);
}

.method-article-text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-text-soft);
}

.method-points {
  display: grid;
  gap: 8px;
  margin: 0 0 14px;
}

.method-point {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

.method-point::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-brand);
}

.script-structure-list {
  display: grid;
  gap: 12px;
  margin: 0 0 14px;
}

.script-structure-item {
  padding: 16px 18px;
  background: var(--c-bg-soft);
  border-left: 3px solid var(--c-brand);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.script-structure-name {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-text);
}

.script-structure-desc {
  display: block;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.preparation-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.preparation-card {
  padding: 20px 22px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  min-width: 0;
}

.preparation-name {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
}

.preparation-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

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

.reuse-item {
  padding: 22px 24px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
}

.reuse-name {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
}

.reuse-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

.reuse-note {
  margin: 20px 0 0;
  padding: 16px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-text-soft);
  background: #fff;
  border-left: 3px solid var(--c-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* --------------------------------------------------------------------------
   pages — cpsp/contact.html
   -------------------------------------------------------------------------- */

.page-title-section {
  background: var(--c-bg-soft);
  border-bottom: 1px solid var(--c-line);
  margin-bottom: 40px;
}

.page-title-inner {
  max-width: var(--w-wide);
  margin: 0 auto;
  padding: 40px var(--gutter);
}

.page-title-lead {
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--c-text-soft);
  max-width: 860px;
}

.prep-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.prep-card {
  padding: 22px 24px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  min-width: 0;
}

.prep-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-text);
}

.prep-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

.content-media {
  margin: 0 0 24px;
  border-radius: var(--radius);
  overflow: hidden;
}

.content-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--c-bg-soft);
}

.flow-steps {
  display: grid;
  gap: 16px;
}

.flow-step {
  display: flex;
  gap: 18px;
  padding: 22px 24px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
}

.flow-step-num {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--c-brand);
  border-radius: 50%;
}

.flow-step-body {
  min-width: 0;
}

.flow-step-body h3 {
  margin: 4px 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-text);
}

.flow-step-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

/* --------------------------------------------------------------------------
   pages — 404.html
   -------------------------------------------------------------------------- */

.error-main {
  padding-bottom: 40px;
}

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

.error-inner {
  max-width: var(--w-narrow);
  margin: 0 auto;
  padding: 72px var(--gutter) 64px;
  text-align: center;
}

.error-code {
  margin: 0 0 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-accent);
}

.error-title {
  margin: 0 0 14px;
  font-size: 34px;
  font-weight: 600;
  color: var(--c-text);
}

.error-text {
  margin: 0 auto 28px;
  max-width: 560px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-text-soft);
}

.error-home {
  margin: 0 auto;
}

.error-links {
  max-width: var(--w-narrow);
  margin: 0 auto;
  padding: 56px var(--gutter) 0;
}

.error-links-title {
  margin: 0 0 20px;
  font-size: 22px;
  font-weight: 600;
  color: var(--c-text);
}

.error-link-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.error-link-list a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60px;
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 500;
  text-align: center;
  color: var(--c-text);
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.error-link-list a:hover,
.error-link-list a:focus-visible {
  color: var(--c-brand);
  border-color: var(--c-brand);
  box-shadow: var(--shadow-card);
}

/* --------------------------------------------------------------------------
   动效增强 —— 不影响初始可见性
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: no-preference) {
  .capability-block,
  .service-detail,
  .module-card,
  .preparation-card,
  .related-item a {
    transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
  }
}

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

@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding: 44px var(--gutter) 48px;
  }

  .hero-visual {
    order: -1;
    aspect-ratio: 16 / 9;
  }

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

  .page-layout,
  .sidebar-left .page-layout,
  .page-layout.sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

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

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

  .checklist .checklist-items,
  .preparation-grid,
  .checklist-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .summary-list,
  .switch-grid,
  .applicable-grid,
  .cooperation-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 768px) {
  :root {
    --gutter: 18px;
  }

  body {
    font-size: 15px;
  }

  h1 {
    font-size: 26px;
  }

  h2 {
    font-size: 21px;
  }

  h3 {
    font-size: 17px;
  }

  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
    padding: 10px var(--gutter);
    min-height: var(--header-h);
  }

  .brand {
    margin-right: auto;
  }

  .nav-toggle {
    display: flex;
    order: 2;
  }

  .header-cta {
    order: 3;
    padding: 0 16px;
    font-size: 14px;
  }

  .primary-nav {
    order: 4;
    flex-basis: 100%;
    margin-left: 0;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 8px 0 4px;
    border-top: 1px solid var(--c-line);
  }

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

  .nav-list a {
    justify-content: flex-start;
    padding: 0 12px;
    font-size: 15px;
  }

  .page-title,
  .hero-copy h1,
  .error-title {
    font-size: 26px;
  }

  .page-header {
    padding: 12px 0 18px;
    margin-bottom: 26px;
  }

  .hero-inner {
    padding: 32px var(--gutter) 36px;
  }

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

  .service-index,
  .capability-process,
  .gallery-section,
  .cooperation {
    padding-top: 44px;
    padding-bottom: 44px;
  }

  .faq-section {
    padding-top: 44px;
    padding-bottom: 0;
  }

  .service-index-grid,
  .gallery-grid,
  .cooperation-steps,
  .service-detail-grid,
  .checklist-list,
  .checklist .checklist-items,
  .applicable-grid,
  .coop-grid,
  .delivery-layout,
  .switch-grid,
  .module-grid,
  .collab-grid,
  .summary-list,
  .method-index-list,
  .preparation-grid,
  .prep-grid,
  .error-link-list,
  .footer-columns {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .page-hero .page-hero-inner:has(.page-hero-media) {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .page-hero-inner {
    padding: 22px 20px;
  }

  .page-title-inner {
    padding: 28px var(--gutter);
  }

  .page-title-section {
    margin-bottom: 26px;
  }

  .service-checklist {
    padding: 24px 20px;
  }

  .step-item .step-detail {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .step-item .step-detail dt {
    padding-top: 10px;
  }

  .footer-columns {
    gap: 22px;
  }

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

  .related-links {
    padding-top: 16px;
  }
}

@media (max-width: 480px) {
  .topic-index-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-actions .btn,
  .page-hero-actions .btn {
    flex: 1 1 100%;
  }

  .summary-item {
    flex-direction: column;
    gap: 10px;
  }
}