/* ============================================================
   麻豆视传媒官网 - 整站样式表
   艺术展览风：米白展墙、墨黑正文、朱红点缀
   ============================================================ */

/* ============================================================
   1. Base - 基础变量与重置
   ============================================================ */
:root {
  --color-wall: #F5F3EE;
  --color-ink: #1C1C1A;
  --color-gray: #6E6E68;
  --color-accent: #B33A3A;
  --color-white: #FFFFFF;
  --color-line: #E2DED5;
  --color-soft: #EDEAE3;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --container-width: 1200px;
  --content-width: 800px;
  --list-width: 1140px;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --space-2xl: 96px;

  --header-height: 72px;
  --transition-base: 0.2s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-ink);
  background-color: var(--color-wall);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-ink);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-ink);
}

p {
  line-height: 1.7;
}

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

/* ============================================================
   2. Layout - 全站骨架
   ============================================================ */

/* --- 站点主体 --- */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-wall);
}

/* --- 页头 --- */
.site-header {
  background-color: var(--color-wall);
  border-bottom: 1px solid var(--color-line);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.brand-logo {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: 0.02em;
  white-space: nowrap;
  flex-shrink: 0;
}

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

/* --- 主导航 --- */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

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

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--color-gray);
  border-radius: var(--radius-sm);
  transition: color var(--transition-base), background-color var(--transition-base);
}

.nav-link:hover {
  color: var(--color-ink);
  background-color: var(--color-soft);
}

.nav-link.is-current {
  color: var(--color-accent);
  font-weight: 600;
}

/* --- 页头咨询按钮 --- */
.header-cta {
  display: inline-block;
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-ink);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base);
  white-space: nowrap;
  flex-shrink: 0;
}

.header-cta:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

/* --- 汉堡按钮 --- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* --- 主内容 --- */
.site-main {
  flex: 1;
  width: 100%;
}

.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-md) var(--space-2xl);
}

/* --- 面包屑 --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md) 0;
  font-size: 14px;
  color: var(--color-gray);
}

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

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

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

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

/* --- 页面标题区 --- */
.page-header {
  padding: var(--space-lg) 0 var(--space-xl);
  border-bottom: 1px solid var(--color-line);
  margin-bottom: var(--space-xl);
}

.page-description {
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  letter-spacing: 0.06em;
}

.page-title {
  font-size: 36px;
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: var(--space-sm);
}

.page-intro {
  font-size: 16px;
  color: var(--color-gray);
  max-width: var(--content-width);
}

/* --- 页脚 --- */
.site-footer {
  background-color: var(--color-ink);
  color: #C9C7C0;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md) var(--space-lg);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

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

.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.04em;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.6;
  color: #A8A69E;
  margin-bottom: var(--space-sm);
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  font-size: 14px;
  color: #A8A69E;
  transition: color var(--transition-base);
}

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

.footer-copyright {
  grid-column: 1 / -1;
  padding-top: var(--space-md);
  border-top: 1px solid #3A3A36;
  font-size: 13px;
  color: #807E77;
}

/* ============================================================
   3. Components - 通用组件
   ============================================================ */

/* --- 按钮 --- */
.btn {
  display: inline-block;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-base), color var(--transition-base),
    border-color var(--transition-base);
  text-align: center;
}

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

.btn-primary:hover {
  background-color: #992E2E;
  color: var(--color-white);
}

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

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

/* --- 区块标题 --- */
.section-heading {
  margin-bottom: var(--space-lg);
}

.section-heading h2 {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.section-heading p {
  font-size: 15px;
  color: var(--color-gray);
  max-width: 640px;
}

.section-title {
  font-size: 26px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.section-desc {
  font-size: 15px;
  color: var(--color-gray);
  max-width: 640px;
  margin-bottom: var(--space-lg);
}

/* --- 文字链接 --- */
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
}

.text-link::after {
  content: "→";
  transition: transform var(--transition-base);
}

.text-link:hover::after {
  transform: translateX(4px);
}

/* --- 折叠问答 --- */
.faq-item {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  margin-bottom: var(--space-sm);
  overflow: hidden;
}

.faq-item summary {
  padding: var(--space-sm) var(--space-md);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
}

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

.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  padding: 0 var(--space-md) var(--space-md);
  font-size: 15px;
  color: var(--color-gray);
}

/* --- 时间线 --- */
.timeline-list {
  position: relative;
}

.timeline-item {
  position: relative;
  padding-left: var(--space-md);
  padding-bottom: var(--space-lg);
  border-left: 2px solid var(--color-line);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.timeline-tag {
  display: inline-block;
  padding: 3px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  background-color: rgba(179, 58, 58, 0.08);
  border-radius: 999px;
  margin-bottom: var(--space-xs);
}

.timeline-summary {
  font-size: 15px;
  color: var(--color-ink);
  margin-bottom: var(--space-xs);
  max-width: 640px;
}

.timeline-date {
  font-size: 13px;
  color: var(--color-gray);
}

/* --- 画廊网格 --- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.gallery-card,
.gallery-item {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-line);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.gallery-card:hover,
.gallery-item:hover {
  box-shadow: 0 8px 24px rgba(28, 28, 26, 0.08);
  transform: translateY(-2px);
}

.gallery-card img,
.gallery-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.gallery-card figcaption,
.gallery-caption {
  padding: var(--space-sm) var(--space-md) var(--space-md);
}

.gallery-card h3,
.gallery-caption h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.gallery-card p,
.gallery-caption p {
  font-size: 14px;
  color: var(--color-gray);
}

/* --- 相关推荐卡片 --- */
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.related-card {
  display: block;
  padding: var(--space-md);
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.related-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 6px 20px rgba(28, 28, 26, 0.06);
}

.related-card h3,
.related-card-title {
  font-size: 16px;
  margin-bottom: 6px;
}

.related-card p,
.related-card-text {
  font-size: 14px;
  color: var(--color-gray);
}

/* --- 相关链接（aside 形式） --- */
.related-links {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-line);
}

.related-title {
  font-size: 20px;
  margin-bottom: var(--space-sm);
}

.related-list li {
  margin-bottom: 10px;
}

.related-list a {
  font-size: 15px;
  color: var(--color-gray);
}

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

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-gray);
  margin-right: var(--space-sm);
}

.related-links-item {
  display: inline-block;
  margin-right: var(--space-sm);
  font-size: 15px;
  color: var(--color-accent);
}

/* --- 内容图片 --- */
.content-media {
  margin-bottom: var(--space-lg);
}

.content-media img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.content-media figcaption {
  padding: var(--space-xs) 0;
  font-size: 13px;
  color: var(--color-gray);
}

.content-media-inline {
  max-width: var(--content-width);
}

/* ============================================================
   4. Pages - 首页
   ============================================================ */

/* --- Hero 区 --- */
.hero-section {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-xl);
  align-items: center;
  padding: var(--space-xl) 0 var(--space-2xl);
}

.hero-title {
  font-size: 42px;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}

.hero-slogan {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.hero-intro {
  font-size: 16px;
  color: var(--color-gray);
  margin-bottom: var(--space-lg);
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.hero-values {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-values li {
  font-size: 14px;
  color: var(--color-gray);
  padding-left: 20px;
  position: relative;
}

.hero-values li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 2px;
  background-color: var(--color-accent);
}

.hero-media {
  position: relative;
}

.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-line);
}

.hero-figure img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

/* --- 工作台面板 --- */
.workspace-panel {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-line);
}

.workspace-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.workspace-column {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.workspace-column h3 {
  font-size: 16px;
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-line);
}

.task-list li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--color-gray);
  border-bottom: 1px solid var(--color-soft);
  display: flex;
  gap: 8px;
  align-items: baseline;
}

.task-list li:last-child {
  border-bottom: none;
}

.task-list li::before {
  content: "·";
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* --- 案例画廊 --- */
.case-gallery {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-line);
}

.gallery-more {
  margin-top: var(--space-lg);
  text-align: center;
}

/* --- 流程与排期 --- */
.process-schedule {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-line);
}

.process-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.schedule-view h3 {
  font-size: 18px;
  margin-bottom: var(--space-sm);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
}

.calendar-weekday {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-gray);
  text-align: center;
  padding: 6px 0;
}

.calendar-day {
  font-size: 13px;
  text-align: center;
  padding: 8px 2px;
  border-radius: var(--radius-sm);
  color: var(--color-gray);
  background-color: var(--color-soft);
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.calendar-day.is-current {
  background-color: var(--color-accent);
  color: var(--color-white);
  font-weight: 600;
}

.schedule-note {
  margin-top: var(--space-sm);
  font-size: 14px;
  color: var(--color-gray);
}

.process-steps h3 {
  font-size: 18px;
  margin-bottom: var(--space-sm);
}

.process-list {
  margin-bottom: var(--space-md);
}

.process-list li {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-line);
}

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

.process-list .step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-ink);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.step-content h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.step-content p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
}

/* --- 项目记录 --- */
.project-log {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-line);
}

.project-log .timeline-list {
  max-width: 720px;
}

.project-log .timeline-list > .text-link {
  margin-top: var(--space-sm);
}

/* --- 服务入口 --- */
.service-entry {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-line);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.service-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.service-card:hover {
  box-shadow: 0 8px 24px rgba(28, 28, 26, 0.08);
  transform: translateY(-2px);
}

.service-card h3 {
  font-size: 17px;
  margin-bottom: var(--space-xs);
}

.service-card p {
  font-size: 14px;
  color: var(--color-gray);
  margin-bottom: var(--space-sm);
  line-height: 1.6;
}

.service-card .text-link {
  font-size: 14px;
}

/* --- FAQ 摘要 --- */
.faq-section {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-line);
}

.faq-list {
  max-width: var(--content-width);
}

.faq-section > .text-link {
  margin-top: var(--space-sm);
}

/* --- 联系引导 --- */
.contact-guide {
  padding: var(--space-xl) 0 var(--space-2xl);
  border-top: 1px solid var(--color-line);
}

.guide-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.guide-step {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  position: relative;
}

.guide-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.guide-step h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.guide-step p {
  font-size: 14px;
  color: var(--color-gray);
}

.guide-action {
  text-align: center;
}

/* ============================================================
   5. Pages - 内页
   ============================================================ */

/* --- 服务项目页 --- */
.service-list {
  margin-bottom: var(--space-xl);
}

.service-item {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: var(--space-lg);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-line);
  align-items: start;
}

.service-item:first-of-type {
  padding-top: 0;
}

.service-media img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.service-content h3 {
  font-size: 22px;
  margin-bottom: var(--space-sm);
}

.service-content p {
  font-size: 15px;
  color: var(--color-gray);
  margin-bottom: var(--space-xs);
  line-height: 1.7;
}

.service-content strong {
  color: var(--color-ink);
  font-weight: 600;
}

.service-scene,
.service-desc,
.service-deliver,
.service-cycle {
  display: block;
}

.comparison-table {
  margin-bottom: var(--space-xl);
}

.comparison-table table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  font-size: 14px;
}

.comparison-table th,
.comparison-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-line);
  vertical-align: top;
}

.comparison-table thead th {
  background-color: var(--color-ink);
  color: var(--color-white);
  font-weight: 600;
  white-space: nowrap;
}

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

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

.comparison-table tbody td {
  color: var(--color-gray);
  line-height: 1.6;
}

.advice {
  margin-bottom: var(--space-xl);
}

.advice-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.advice-list li {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  position: relative;
  padding-left: 48px;
}

.advice-list li::before {
  content: counter(advice-counter);
  counter-increment: advice-counter;
  position: absolute;
  left: var(--space-sm);
  top: var(--space-md);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.advice-list {
  counter-reset: advice-counter;
}

/* --- 案例精选页 --- */
.gallery-section {
  margin-bottom: var(--space-xl);
}

.gallery-section .gallery-grid {
  grid-template-columns: repeat(3, 1fr);
}

.gallery-item img {
  height: 200px;
}

.topic-series {
  margin-bottom: var(--space-xl);
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.topic-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.topic-card h3 {
  font-size: 17px;
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-line);
}

.topic-list li {
  font-size: 14px;
  color: var(--color-gray);
  padding: 8px 0;
  border-bottom: 1px solid var(--color-soft);
  line-height: 1.6;
}

.topic-list li:last-child {
  border-bottom: none;
}

.topic-link {
  display: inline-block;
  margin-top: var(--space-sm);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.related-section {
  margin-bottom: var(--space-xl);
}

/* --- 拍摄方法页 --- */
.content-section {
  margin-bottom: var(--space-xl);
}

.preparation-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  counter-reset: prep-counter;
}

.preparation-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}

.item-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-ink);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.item-title {
  font-size: 16px;
  margin-bottom: 4px;
}

.item-text {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
}

.steps-list {
  counter-reset: step-counter;
  max-width: var(--content-width);
}

.step-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-line);
}

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

.step-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
  width: 160px;
}

.step-index {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-title {
  font-size: 16px;
}

.step-text {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
  min-width: 0;
}

.checklist-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.checklist-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  position: relative;
  padding-left: 52px;
}

.checklist-item::before {
  content: "✓";
  position: absolute;
  left: var(--space-sm);
  top: var(--space-md);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.checklist-title {
  font-size: 15px;
  margin-bottom: 4px;
}

.checklist-text {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
}

.next-actions {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.next-title {
  font-size: 18px;
  margin-bottom: var(--space-md);
}

.action-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.action-card {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

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

.action-text {
  font-size: 14px;
  color: var(--color-gray);
  margin-bottom: var(--space-sm);
  line-height: 1.6;
}

.action-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

/* --- 项目记录页 --- */
.timeline-section {
  margin-bottom: var(--space-xl);
}

.timeline-section .timeline-list {
  max-width: var(--content-width);
}

.timeline-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-md);
  padding-left: var(--space-lg);
}

.timeline-marker {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timeline-content h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.timeline-content p {
  font-size: 15px;
  color: var(--color-gray);
  line-height: 1.7;
}

.work-style-section {
  margin-bottom: var(--space-xl);
}

.work-style-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.work-style-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.work-style-card h3 {
  font-size: 16px;
  margin-bottom: var(--space-xs);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-line);
}

.work-style-card p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

.work-figure {
  margin-bottom: var(--space-xl);
}

.work-image {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.work-figure figcaption {
  padding: var(--space-xs) 0;
  font-size: 13px;
  color: var(--color-gray);
}

/* --- 常见问题页 --- */
.faq-section {
  margin-bottom: var(--space-xl);
}

.faq-group {
  margin-bottom: var(--space-lg);
}

.faq-group-heading {
  font-size: 18px;
  margin-bottom: var(--space-sm);
  padding-left: var(--space-sm);
  border-left: 3px solid var(--color-accent);
}

.faq-group .faq-item {
  max-width: var(--content-width);
}

.other-help {
  margin-bottom: var(--space-xl);
}

.help-card-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  max-width: var(--content-width);
}

.help-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

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

.help-card p {
  font-size: 14px;
  color: var(--color-gray);
  margin-bottom: var(--space-sm);
  line-height: 1.6;
}

.help-card a {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.faq-media {
  margin-bottom: var(--space-xl);
}

.faq-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.faq-media figcaption {
  padding: var(--space-xs) 0;
  font-size: 13px;
  color: var(--color-gray);
}

/* --- 联系路径页 --- */
.contact-process {
  margin-bottom: var(--space-xl);
}

.section-kicker {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 4px;
  letter-spacing: 0.06em;
}

.contact-process .process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-process .process-step {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  position: relative;
}

.contact-process .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.contact-process .process-step h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.contact-process .process-step p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
  margin-bottom: var(--space-xs);
}

.step-status {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  background-color: rgba(179, 58, 58, 0.08);
  border-radius: 999px;
}

.process-figure {
  margin-top: var(--space-lg);
}

.process-figure img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.process-figure figcaption {
  padding: var(--space-xs) 0;
  font-size: 13px;
  color: var(--color-gray);
}

.contact-checklist {
  margin-bottom: var(--space-xl);
}

.section-lead {
  font-size: 15px;
  color: var(--color-gray);
  max-width: 640px;
  margin-bottom: var(--space-lg);
}

.checklist-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.contact-checklist .checklist-item {
  padding-left: var(--space-md);
}

.contact-checklist .checklist-item::before {
  display: none;
}

.contact-checklist .checklist-item h3 {
  font-size: 15px;
  margin-bottom: 6px;
  padding-top: 0;
}

.contact-checklist .checklist-item p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
}

.contact-response {
  margin-bottom: var(--space-xl);
}

.response-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  max-width: var(--list-width);
}

.response-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

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

.response-item p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
}

.related-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

/* --- 404 页 --- */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: var(--space-xl) var(--space-md);
}

.error-content {
  text-align: center;
  max-width: 560px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.error-title {
  font-size: 28px;
  margin-bottom: var(--space-sm);
}

.error-desc {
  font-size: 16px;
  color: var(--color-gray);
  margin-bottom: var(--space-xs);
}

.error-tip {
  font-size: 14px;
  color: var(--color-gray);
  margin-bottom: var(--space-lg);
}

.error-cta {
  display: inline-block;
  padding: 12px 32px;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base);
}

.error-cta:hover {
  background-color: #992E2E;
  color: var(--color-white);
}

/* ============================================================
   6. Responsive - 响应式
   ============================================================ */

/* --- 平板（≤1024px） --- */
@media (max-width: 1024px) {
  .hero-section {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .hero-media {
    order: -1;
  }

  .hero-figure img {
    height: 320px;
  }

  .process-layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

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

  .service-item {
    grid-template-columns: 280px 1fr;
    gap: var(--space-md);
  }

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

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

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

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

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

  .work-style-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .response-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --- 手机（≤768px） --- */
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .header-inner {
    padding: 0 var(--space-sm);
    gap: var(--space-xs);
  }

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

  .header-cta {
    display: none;
  }

  /* 汉堡菜单 */
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-wall);
    border-bottom: 1px solid var(--color-line);
    box-shadow: 0 8px 24px rgba(28, 28, 26, 0.08);
    z-index: 99;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-sm);
    gap: 0;
  }

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

  .nav-link {
    padding: 14px var(--space-sm);
    font-size: 15px;
    border-bottom: 1px solid var(--color-soft);
    border-radius: 0;
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  /* 首页模块 */
  .home-main {
    padding: 0 var(--space-sm);
  }

  .hero-section {
    padding: var(--space-lg) 0 var(--space-xl);
  }

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

  .hero-slogan {
    font-size: 16px;
  }

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

  .hero-values {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .hero-figure img {
    height: 240px;
  }

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

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

  .gallery-card img,
  .gallery-item img {
    height: 200px;
  }

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

  .guide-steps {
    grid-template-columns: 1fr;
  }

  .process-steps {
    margin-bottom: var(--space-sm);
  }

  .calendar-grid {
    padding: var(--space-xs);
  }

  .calendar-day {
    min-height: 32px;
    padding: 6px 2px;
    font-size: 12px;
  }

  /* 内页 */
  .inner-main {
    padding: 0 var(--space-sm) var(--space-xl);
  }

  .page-header {
    padding: var(--space-md) 0 var(--space-lg);
    margin-bottom: var(--space-lg);
  }

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

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

  .breadcrumb {
    padding: var(--space-sm) 0;
    font-size: 13px;
    flex-wrap: wrap;
  }

  /* 服务页 */
  .service-item {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .service-media img {
    height: 200px;
  }

  .comparison-table {
    overflow-x: auto;
  }

  .comparison-table table {
    min-width: 640px;
  }

  .advice-list {
    grid-template-columns: 1fr;
  }

  /* 案例页 */
  .gallery-section .gallery-grid {
    grid-template-columns: 1fr;
  }

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

  /* 方法页 */
  .preparation-list {
    grid-template-columns: 1fr;
  }

  .step-item {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .step-header {
    width: auto;
  }

  .checklist-list {
    grid-template-columns: 1fr;
  }

  .action-cards {
    grid-template-columns: 1fr;
  }

  .content-media img {
    height: 220px;
  }

  /* 项目页 */
  .timeline-item {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
    padding-left: var(--space-md);
  }

  .timeline-marker {
    flex-direction: row;
    align-items: center;
    gap: var(--space-xs);
  }

  .work-style-grid {
    grid-template-columns: 1fr;
  }

  .work-image {
    height: 240px;
  }

  /* FAQ 页 */
  .help-card-list {
    grid-template-columns: 1fr;
  }

  .faq-image {
    height: 200px;
  }

  /* 联系页 */
  .contact-process .process-steps {
    grid-template-columns: 1fr;
  }

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

  .response-list {
    grid-template-columns: 1fr;
  }

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

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

  .process-figure img {
    height: 220px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-sm) var(--space-md);
  }

  .footer-copyright {
    padding-top: var(--space-sm);
  }

  /* 404 */
  .error-code {
    font-size: 56px;
  }

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

/* --- 小屏（≤390px） --- */
@media (max-width: 390px) {
  .brand-logo {
    font-size: 15px;
  }

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

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

  .hero-actions .btn {
    width: 100%;
  }

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

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

  .calendar-grid {
    gap: 2px;
    padding: 6px;
  }

  .calendar-day {
    min-height: 28px;
    padding: 4px 0;
    font-size: 11px;
  }

  .calendar-weekday {
    font-size: 11px;
    padding: 4px 0;
  }

  .service-media img {
    height: 180px;
  }

  .gallery-card img,
  .gallery-item img {
    height: 180px;
  }

  .work-image {
    height: 200px;
  }

  .faq-image {
    height: 180px;
  }

  .process-figure img {
    height: 180px;
  }
}