/* ============================================================
   BASE — 全局变量、重置、基础排版
   ============================================================ */
:root {
  --bg: #F7F4EF;
  --ink: #2B2826;
  --accent: #B4552D;
  --accent-dark: #8A4B2D;
  --clay: #E4C4A3;
  --card-bg: #FFFFFF;
  --line: rgba(43, 40, 38, 0.12);
  --line-soft: rgba(43, 40, 38, 0.07);
  --muted: #6E665E;
  --code: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --radius: 8px;
  --container: 1200px;
  --header-h: 72px;
  --shadow: 0 1px 2px rgba(43, 40, 38, 0.04), 0 4px 16px rgba(43, 40, 38, 0.05);
  --shadow-hover: 0 2px 4px rgba(43, 40, 38, 0.06), 0 12px 28px rgba(43, 40, 38, 0.09);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* 等宽数字/编号 */
.card-num,
.step-num,
.step-no,
.process-number,
.process-no,
.service-code,
.explore-code,
.archive-year,
.year-links a,
.heading-number,
.related-no,
.error-code,
.section-no {
  font-family: var(--code);
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   LAYOUT — 全站骨架：页头、页脚、容器、面包屑
   ============================================================ */
.site-header {
  background: rgba(247, 244, 239, 0.94);
  border-bottom: 1px solid var(--line-soft);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.brand-tag {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  padding: 6px 2px;
  position: relative;
  transition: color 0.2s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}

.site-nav a:hover::after,
.site-nav a.is-current::after {
  transform: scaleX(1);
}

.site-nav a.is-current {
  color: var(--accent);
  font-weight: 700;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 6px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

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

.site-footer {
  background: #2B2826;
  color: rgba(255, 255, 255, 0.82);
  margin-top: 80px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 24px 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr) 1.4fr;
  gap: 48px 40px;
}

.footer-col p.footer-title {
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--clay);
}

.footer-about p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.62);
}

.footer-about .copyright {
  margin-top: 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

/* 面包屑 */
.breadcrumb {
  padding: 28px 0 0;
  font-size: 14px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.breadcrumb a {
  color: var(--muted);
  transition: color 0.2s ease;
}

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

.breadcrumb-sep {
  color: rgba(43, 40, 38, 0.3);
  font-size: 12px;
}

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

/* 内页通用 */
.inner-main {
  padding-bottom: 48px;
}

.page-header {
  padding: 36px 0 8px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.page-header::before {
  content: "";
  width: 6px;
  height: 32px;
  background: var(--accent);
  border-radius: 3px;
  flex-shrink: 0;
}

.page-title {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--ink);
}

/* 页标题区（编号 + 摘要） */
.page-title-block {
  padding: 32px 0 8px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-title-block .process-number,
.page-title-block .process-no,
.page-heading .heading-number {
  font-size: 14px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.page-summary {
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 720px;
}

/* 相关链接（页尾导航） */
.related-links {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

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

.related-links-item {
  font-size: 14px;
  color: var(--accent);
  transition: color 0.2s ease;
}

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

/* ============================================================
   COMPONENTS — 通用组件：按钮、卡片、编号、文本链接
   ============================================================ */
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  padding: 14px 28px;
  border-radius: var(--radius);
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 1px 2px rgba(43, 40, 38, 0.08);
}

.cta-button:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(180, 85, 45, 0.2);
}

.cta-button span {
  font-size: 18px;
  line-height: 1;
}

.cta-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  transition: color 0.2s ease, gap 0.2s ease;
}

.cta-link:hover {
  color: var(--accent-dark);
  gap: 12px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  transition: color 0.2s ease, gap 0.2s ease;
}

.text-link:hover {
  color: var(--accent-dark);
  gap: 12px;
}

.text-link span {
  font-size: 16px;
}

/* 通用 section 头 */
.section-head {
  margin-bottom: 36px;
  max-width: 640px;
}

.section-kicker {
  font-family: var(--code);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

/* 图片容器 */
.card-media,
.service-media,
.archive-media,
.approach-media,
.combination-media,
.hero-figure,
.process-figure,
.faq-figure,
.content-media {
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--clay);
}

.card-media img,
.service-media img,
.archive-media img,
.approach-media img,
.combination-media img,
.hero-figure img,
.process-figure img,
.faq-figure img,
.content-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.card-media:hover img,
.service-media:hover img,
.archive-media:hover img,
.approach-media:hover img,
.combination-media:hover img {
  transform: scale(1.04);
}

/* ============================================================
   PAGES — 首页
   ============================================================ */
.home-main {
  padding-bottom: 0;
}

/* Hero 区：左右不对称 */
.hero-section {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: start;
  padding: 48px 0 64px;
}

.hero-index {
  padding-top: 8px;
  position: sticky;
  top: 24px;
}

.index-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.hero-index ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-index a {
  display: block;
  padding: 10px 12px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  border-radius: 6px;
  border-left: 3px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.hero-index a:hover {
  background: rgba(228, 196, 163, 0.18);
  border-left-color: var(--accent);
  color: var(--accent);
}

.hero-main {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.hero-figure {
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 440px;
}

.hero-content h1 {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  max-width: 640px;
}

.hero-content p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 24px;
}

/* 服务网络概览 */
.services-overview {
  padding: 72px 0;
}

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

.service-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.service-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.card-media {
  aspect-ratio: 4 / 3;
  border-radius: 0;
}

.card-body {
  padding: 20px;
}

.card-num {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  display: block;
  margin-bottom: 8px;
}

.card-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.card-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 14px;
}

.card-body a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  transition: gap 0.2s ease, color 0.2s ease;
}

.card-body a:hover {
  gap: 10px;
  color: var(--accent-dark);
}

.card-body a span {
  font-size: 15px;
}

/* 精选项目档案 */
.featured-archive {
  padding: 72px 0;
  border-top: 1px solid var(--line-soft);
}

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

.archive-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.archive-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.archive-card-wide {
  grid-column: span 1;
}

.archive-media {
  aspect-ratio: 16 / 10;
  border-radius: 0;
}

.archive-body {
  padding: 20px;
}

.archive-year {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  display: block;
  margin-bottom: 6px;
}

.archive-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.archive-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 14px;
}

.archive-body a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  transition: gap 0.2s ease, color 0.2s ease;
}

.archive-body a:hover {
  gap: 10px;
  color: var(--accent-dark);
}

.archive-body a span {
  font-size: 15px;
}

.archive-more {
  margin-top: 32px;
  text-align: center;
}

/* 制作流程预告 */
.process-preview {
  padding: 72px 0;
  border-top: 1px solid var(--line-soft);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.step-item {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  padding: 28px 24px;
  position: relative;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.step-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.step-num {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  display: block;
  margin-bottom: 14px;
}

.step-item h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-item p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 16px;
}

.step-item a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  transition: gap 0.2s ease, color 0.2s ease;
}

.step-item a:hover {
  gap: 10px;
  color: var(--accent-dark);
}

.step-item a span {
  font-size: 15px;
}

/* 问题处理入口 */
.faq-entry {
  padding: 72px 0;
  border-top: 1px solid var(--line-soft);
}

.faq-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.faq-col h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

.faq-col ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.faq-col a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  font-size: 15px;
  color: var(--ink);
  transition: color 0.2s ease, padding-left 0.2s ease;
  border-bottom: 1px dashed var(--line-soft);
}

.faq-col a::before {
  content: "›";
  color: var(--accent);
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}

.faq-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.faq-more {
  margin-top: 32px;
  text-align: center;
}

/* ============================================================
   PAGES — 服务网络 services.html
   ============================================================ */
.page-services .page-heading {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  padding: 32px 0 8px;
}

.heading-number {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex-shrink: 0;
  padding-top: 6px;
}

.heading-content p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 720px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 40px 0 24px;
}

.service-grid .service-card {
  display: flex;
  flex-direction: column;
}

.service-media {
  aspect-ratio: 4 / 3;
  border-radius: 0;
}

.service-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.service-code {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
}

.service-body h2 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.service-scene {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-dark);
  background: rgba(228, 196, 163, 0.18);
  padding: 4px 10px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 10px;
  align-self: flex-start;
}

.service-body p:not(.service-scene) {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 14px;
  flex: 1;
}

.service-body a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  transition: gap 0.2s ease, color 0.2s ease;
}

.service-body a:hover {
  gap: 10px;
  color: var(--accent-dark);
}

/* 服务场景与对象 */
.service-scenes {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 56px;
  padding: 48px 0 24px;
  border-top: 1px solid var(--line-soft);
}

.scenes-left h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 24px;
}

.scenes-left ul {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.scenes-left li {
  padding-left: 20px;
  border-left: 3px solid var(--clay);
  transition: border-color 0.2s ease;
}

.scenes-left li:hover {
  border-left-color: var(--accent);
}

.scenes-left h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.scenes-left li p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.scenes-right {
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 32px;
  align-self: start;
}

.scenes-right h2 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 16px;
}

.scenes-right p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 16px;
}

.scenes-right .cta-link {
  margin-top: 8px;
}

/* 继续了解 */
.continue-explore {
  padding: 48px 0 24px;
  border-top: 1px solid var(--line-soft);
}

.continue-explore h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 28px;
}

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

.explore-links a {
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.explore-links a:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.explore-code {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

.explore-links a span:not(.explore-code) {
  font-size: 16px;
  font-weight: 700;
}

/* ============================================================
   PAGES — 制作方式 approach.html
   ============================================================ */
.page-approach .page-title-block {
  flex-direction: row;
  align-items: baseline;
  gap: 24px;
}

.process-number {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.approach-list {
  display: flex;
  flex-direction: column;
  gap: 56px;
  padding: 40px 0 24px;
}

.approach-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.approach-item:nth-child(even) .approach-media {
  order: 2;
}

.approach-item:nth-child(even) .approach-content {
  order: 1;
}

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

.approach-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.approach-content .process-number {
  display: block;
  margin-bottom: 4px;
}

.approach-content h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}

.approach-content p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* 组合方式说明 */
.combination-section {
  padding: 48px 0 24px;
  border-top: 1px solid var(--line-soft);
}

.combination-section > h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 28px;
}

.combination-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: center;
}

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

.combination-text {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.combination-text p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* 返回目录 */
.back-directory {
  padding: 48px 0 0;
  border-top: 1px solid var(--line-soft);
  margin-top: 48px;
}

.directory-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
}

.back-directory ul {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.back-directory a {
  display: inline-block;
  padding: 10px 20px;
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.back-directory a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ============================================================
   PAGES — 制作流程 process.html
   ============================================================ */
.page-process .page-title-inner {
  display: flex;
  align-items: baseline;
  gap: 24px;
}

.process-overview {
  padding: 40px 0 24px;
}

.process-intro p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 720px;
  margin-bottom: 40px;
}

.process-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process-step {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line-soft);
  position: relative;
}

.process-step:last-child {
  border-bottom: none;
}

.step-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.step-number {
  font-family: var(--code);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.step-header h2 {
  font-size: 22px;
  font-weight: 800;
}

.step-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.step-body > p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.step-body h3 {
  font-size: 15px;
  font-weight: 700;
  margin-top: 8px;
}

.step-body ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 18px;
  list-style: disc;
}

.step-body ul li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 流程配图 */
.process-visual {
  padding: 40px 0 24px;
}

.process-figure {
  aspect-ratio: 16 / 7;
  max-height: 420px;
}

.process-figure figcaption,
.faq-figure figcaption,
.content-media figcaption {
  padding: 14px 20px;
  font-size: 14px;
  color: var(--muted);
  background: var(--card-bg);
  border-top: 1px solid var(--line-soft);
}

/* 客户配合清单 */
.checklist-section {
  padding: 48px 0 24px;
  border-top: 1px solid var(--line-soft);
}

.section-heading {
  margin-bottom: 32px;
  max-width: 640px;
}

.section-no {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}

.section-heading h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-heading p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.checklist-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.checklist-col {
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 28px;
}

.checklist-col h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.checklist-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.checklist-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.checklist-list strong {
  font-size: 15px;
  font-weight: 700;
}

.checklist-list p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 常见问题入口 */
.faq-entry {
  padding: 48px 0 24px;
  border-top: 1px solid var(--line-soft);
}

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

.faq-entry-item {
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-entry-item h3 {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
}

.faq-entry-item h3 a {
  color: var(--ink);
  transition: color 0.2s ease;
}

.faq-entry-item h3 a:hover {
  color: var(--accent);
}

.faq-entry-item p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  flex: 1;
}

.faq-entry-more {
  margin-top: 28px;
}

/* 下一步 */
.next-steps {
  padding: 48px 0 24px;
  border-top: 1px solid var(--line-soft);
}

.next-steps-inner {
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
}

.next-steps-inner h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 12px;
}

.next-steps-inner p {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 28px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.next-steps-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================================
   PAGES — 项目档案 archive.html
   ============================================================ */
.page-archive .page-title-block {
  flex-direction: row;
  align-items: baseline;
  gap: 24px;
}

.year-index {
  padding: 40px 0 24px;
}

.section-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
}

.year-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.year-links a {
  display: inline-block;
  padding: 10px 28px;
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

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

.archive-groups {
  padding: 40px 0 8px;
  border-top: 1px solid var(--line-soft);
}

.archive-year-title {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 28px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--clay);
  display: inline-block;
}

.month-group {
  margin-bottom: 40px;
}

.month-label {
  font-family: var(--code);
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

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

.archive-card {
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.archive-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.archive-media {
  aspect-ratio: 16 / 10;
  border-radius: 0;
}

.archive-content {
  padding: 20px;
}

.archive-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-dark);
  background: rgba(228, 196, 163, 0.18);
  padding: 3px 10px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 10px;
}

.archive-content h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.archive-summary {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 14px;
}

.archive-content a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  transition: gap 0.2s ease, color 0.2s ease;
}

.archive-content a:hover {
  gap: 10px;
  color: var(--accent-dark);
}

.archive-content a::after {
  content: "›";
  font-size: 16px;
}

/* 历史跳转 */
.archive-footer-nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding: 40px 0 0;
  border-top: 1px solid var(--line-soft);
  margin-top: 40px;
}

.archive-footer-nav a {
  display: inline-block;
  padding: 10px 24px;
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.archive-footer-nav a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ============================================================
   PAGES — 问题处理 faq.html
   ============================================================ */
.page-faq .page-heading {
  display: flex;
  gap: 24px;
  align-items: baseline;
  padding: 32px 0 8px;
}

.page-faq .page-summary {
  font-size: 17px;
  color: var(--muted);
  line-height: 1.8;
  max-width: 720px;
}

.faq-section {
  padding: 40px 0 24px;
}

.faq-group {
  margin-bottom: 40px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--card-bg);
  overflow: hidden;
}

.faq-group > h2 {
  font-size: 18px;
  font-weight: 800;
  padding: 20px 28px;
  background: rgba(228, 196, 163, 0.14);
  border-bottom: 1px solid var(--line-soft);
}

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

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

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

.faq-item summary {
  padding: 18px 28px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: color 0.2s ease;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: var(--accent);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

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

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

.faq-answer {
  padding: 0 28px 20px;
}

.faq-answer p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* 解决思路表 */
.solution-table-section {
  padding: 48px 0 24px;
  border-top: 1px solid var(--line-soft);
}

.solution-table-section h2 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
}

.solution-table-section .section-desc {
  margin-bottom: 28px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--card-bg);
}

.solution-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}

.solution-table th,
.solution-table td {
  text-align: left;
  padding: 16px 20px;
  font-size: 14px;
  line-height: 1.7;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}

.solution-table th {
  background: rgba(228, 196, 163, 0.14);
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

.solution-table td:first-child {
  font-weight: 600;
  width: 32%;
}

.solution-table tr:last-child th,
.solution-table tr:last-child td {
  border-bottom: none;
}

.solution-table tbody tr:hover {
  background: rgba(228, 196, 163, 0.06);
}

/* FAQ 配图 */
.faq-image-section {
  padding: 40px 0 24px;
}

.faq-figure {
  aspect-ratio: 16 / 6;
  max-height: 360px;
}

/* 关联合作入口 */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 28px;
}

.related-grid a {
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.related-grid a:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.related-no {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

.related-text {
  font-size: 17px;
  font-weight: 700;
}

.related-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

/* ============================================================
   PAGES — 合作方式 contact.html
   ============================================================ */
.page-contact .page-title-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.content-media-inline {
  margin-top: 24px;
  aspect-ratio: 16 / 6;
  max-height: 360px;
}

.cooperation-steps {
  padding: 48px 0 24px;
}

.cooperation-steps h2 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
}

.cooperation-steps .section-desc {
  margin-bottom: 32px;
}

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

.step-card {
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.step-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.step-no {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
}

.step-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  flex: 1;
}

.step-card a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  transition: gap 0.2s ease, color 0.2s ease;
}

.step-card a:hover {
  gap: 10px;
  color: var(--accent-dark);
}

.step-card a::after {
  content: "›";
  font-size: 16px;
}

/* 准备清单 */
.preparation-checklist {
  padding: 48px 0 24px;
  border-top: 1px solid var(--line-soft);
}

.preparation-checklist h2 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
}

.preparation-checklist .section-desc {
  margin-bottom: 32px;
}

.checklist-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.checklist-col {
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 28px;
}

.checklist-col h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.checklist-col ul {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.checklist-col li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.checklist-item-title {
  font-size: 15px;
  font-weight: 700;
}

.checklist-col li p:last-child {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 相关入口 */
.related-entry {
  padding: 48px 0 24px;
  border-top: 1px solid var(--line-soft);
}

.related-entry h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 28px;
}

.entry-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.entry-links a {
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  transition: border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.entry-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow);
}

/* ============================================================
   PAGES — 404
   ============================================================ */
.error-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 80px 24px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
}

.error-panel {
  text-align: center;
  max-width: 520px;
}

.error-code {
  font-size: 72px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 28px;
}

.btn-back {
  display: inline-block;
  background: var(--accent);
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius);
  transition: background 0.2s ease;
}

.btn-back:hover {
  background: var(--accent-dark);
}

.error-links {
  text-align: center;
}

.error-links p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 16px;
}

.error-links ul {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.error-links a {
  display: inline-block;
  padding: 10px 24px;
  background: var(--card-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

/* ============================================================
   RESPONSIVE — 响应式断点
   ============================================================ */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

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

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

  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
    height: 60px;
  }

  .brand-name {
    font-size: 18px;
  }

  .brand-tag {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line-soft);
    box-shadow: 0 8px 20px rgba(43, 40, 38, 0.08);
    z-index: 100;
  }

  .site-nav ul {
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 8px 16px 16px;
  }

  .site-nav ul.is-open {
    display: flex;
  }

  .site-nav a {
    display: block;
    padding: 14px 8px;
    font-size: 16px;
    border-bottom: 1px solid var(--line-soft);
  }

  .site-nav a::after {
    display: none;
  }

  .site-nav a.is-current {
    color: var(--accent);
  }

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

  .page-title {
    font-size: 32px;
  }

  /* 首页 Hero 移动端：主视觉在前，索引在后 */
  .hero-section {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 0 48px;
  }

  .hero-index {
    position: static;
    order: 2;
  }

  .hero-index ul {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .hero-index a {
    padding: 8px 14px;
    font-size: 14px;
    border: 1px solid var(--line-soft);
    border-radius: 20px;
    border-left: 1px solid var(--line-soft);
    background: var(--card-bg);
  }

  .hero-index a:hover {
    border-left-color: var(--accent);
  }

  .hero-main {
    order: 1;
  }

  .hero-content h1 {
    font-size: 30px;
  }

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

  .services-overview,
  .featured-archive,
  .process-preview,
  .faq-entry {
    padding: 48px 0;
  }

  .services-grid,
  .archive-grid,
  .process-steps,
  .faq-columns,
  .service-grid,
  .explore-links,
  .steps-grid,
  .entry-links,
  .faq-entry-list {
    grid-template-columns: 1fr;
  }

  .archive-card-wide {
    grid-column: span 1;
  }

  .section-head h2 {
    font-size: 26px;
  }

  /* 服务场景 */
  .service-scenes {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  /* 制作方式 */
  .approach-item {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .approach-item:nth-child(even) .approach-media,
  .approach-item:nth-child(even) .approach-content {
    order: 0;
  }

  .combination-layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* 制作流程 */
  .process-step {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 24px 0;
  }

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

  .checklist-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .next-steps-inner {
    padding: 28px 20px;
  }

  /* 项目档案 */
  .year-links {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 8px;
  }

  .year-links a {
    flex-shrink: 0;
  }

  /* FAQ */
  .faq-group > h2 {
    padding: 16px 20px;
  }

  .faq-item summary {
    padding: 16px 20px;
  }

  .faq-answer {
    padding: 0 20px 16px;
  }

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

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

  /* 合作方式 */
  .content-media-inline {
    aspect-ratio: 4 / 3;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 16px 32px;
  }
}

@media (max-width: 480px) {
  .services-grid,
  .archive-grid,
  .service-grid,
  .process-steps,
  .faq-entry-list,
  .steps-grid,
  .entry-links {
    grid-template-columns: 1fr;
  }

  .hero-content h1 {
    font-size: 26px;
  }

  .hero-content p {
    font-size: 15px;
  }

  .cta-button {
    width: 100%;
    justify-content: center;
  }

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

  .page-summary {
    font-size: 15px;
  }

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

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

  .step-header {
    flex-direction: column;
    gap: 4px;
  }

  .checklist-col,
  .scenes-right {
    padding: 20px;
  }

  .related-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

/* 程序验收反馈：修复网格孤项 */
@media (min-width: 769px) {
  .archive-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}