/* ==========================================================================
   糖心 · 全站样式表
   网站：eygsfjg.cn
   说明：本文件为整站唯一 CSS，覆盖首页、全部内页与 404 页。
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Base —— 变量、重置、全局字体与基础元素
   -------------------------------------------------------------------------- */
:root {
  --color-bg: #fbf9f6;
  --color-surface: #ffffff;
  --color-ink: #2a2c2e;
  --color-ink-soft: #6d6f71;
  --color-line: #e6e1da;
  --color-accent: #b4552d;
  --color-accent-soft: #f0e6df;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --container-max: 1180px;
  --container-pad: 20px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --header-h: 68px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
}

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

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

body {
  background-color: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul,
ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

figure {
  margin: 0;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-ink);
}

h1 {
  font-size: 36px;
}

h2 {
  font-size: 26px;
}

h3 {
  font-size: 19px;
}

p {
  color: var(--color-ink);
}

/* 链接后接箭头（首页模块通用） */
a.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  transition: color var(--transition-fast);
}

a.link-arrow::after {
  content: "→";
  font-size: 1.1em;
}

/* 正文内部段落间距 */
p + p {
  margin-top: 12px;
}

/* 通用容器 */
.site-main,
.header-inner,
.footer-layout {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

/* --------------------------------------------------------------------------
   2. Layout —— 页头、页脚、面包屑、页面骨架
   -------------------------------------------------------------------------- */

/* ---------- 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(251, 249, 246, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: inline-flex;
  align-items: baseline;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--color-ink);
}

/* 主导航（桌面） */
.site-nav .nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-list a {
  display: inline-block;
  padding: 6px 2px;
  font-size: 15px;
  color: var(--color-ink-soft);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.nav-list a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.nav-list a.is-current {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  font-weight: 500;
}

/* 汉堡按钮（移动端显示） */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius-sm);
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 22px;
  padding-bottom: 4px;
  font-size: 14px;
  color: var(--color-ink-soft);
}

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

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

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

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

/* ---------- 内页统一主容器 ---------- */
.site-main.inner-main {
  padding-top: 0;
  padding-bottom: 60px;
  min-height: 60vh;
}

/* 内页标题区 */
.page-header {
  padding-top: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-line);
}

.page-title {
  font-size: 36px;
  line-height: 1.35;
  margin-bottom: 8px;
}

.page-description {
  font-size: 16px;
  color: var(--color-ink-soft);
  max-width: 720px;
}

.page-lead,
.page-intro {
  margin-top: 12px;
  max-width: 720px;
}

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--color-line);
  background-color: var(--color-surface);
  margin-top: 40px;
}

.footer-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-top: 48px;
  padding-bottom: 40px;
}

.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 6px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--color-ink-soft);
  max-width: 320px;
  line-height: 1.7;
}

.footer-nav h3 {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

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

.footer-nav ul a {
  font-size: 15px;
  color: var(--color-ink-soft);
}

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

.footer-bottom {
  border-top: 1px solid var(--color-line);
  padding: 16px 20px;
  text-align: center;
}

.footer-bottom p {
  font-size: 14px;
  color: var(--color-ink-soft);
}

/* --------------------------------------------------------------------------
   3. Components —— 通用可复用模块
   -------------------------------------------------------------------------- */

/* ---------- 区块标题（首页 section-heading 与内页 section-title 统一基调） ---------- */
.section-heading {
  margin-bottom: 32px;
}

.section-heading h2,
.section-title {
  font-size: 26px;
  margin-bottom: 8px;
}

.section-heading p,
.section-title + p,
.section-desc {
  font-size: 15px;
  color: var(--color-ink-soft);
}

/* 编号小标（首页与内页通用） */
.step-number {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--color-accent);
  letter-spacing: 1px;
  font-weight: 600;
}

/* 链接卡片（首页 next-card / 内页 related-card 等） */
.next-card,
.related-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.next-card:hover,
.related-card:hover {
  border-color: var(--color-accent);
}

.next-card h3,
.related-card h3,
.related-card-title {
  font-size: 18px;
  margin-bottom: 8px;
}

.next-card p,
.related-card p {
  font-size: 14px;
  color: var(--color-ink-soft);
  margin-bottom: 12px;
}

/* 通用链接箭头（卡片内嵌） */
.next-card a::after,
.related-card a::after {
  content: "→";
  margin-left: 4px;
}

/* ---------- 图片容器统一约束 ---------- */
figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

figure figcaption {
  font-size: 13px;
  color: var(--color-ink-soft);
  margin-top: 8px;
  line-height: 1.6;
}

/* ---------- FAQ 手风琴（首页与 FAQ 页共用） ---------- */
.faq-item {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--transition-fast);
}

.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-fast);
}

.faq-item[open] summary {
  background-color: var(--color-accent-soft);
}

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

.faq-answer {
  padding: 0 20px 20px;
  font-size: 15px;
}

/* ---------- 内页相关列表（service / process 页尾部） ---------- */
.related-pages {
  margin-top: 48px;
}

.related-title {
  font-size: 22px;
  margin-bottom: 16px;
}

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

.related-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
}

.related-list a::before {
  content: "→";
  color: var(--color-accent);
}

/* ---------- 内页相关网格（method / faq / guide 页尾部） ---------- */
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

/* ---------- 通用“继续阅读”段落 ---------- */
.block-more {
  margin-top: 20px;
}

.block-more a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 500;
}

.block-more a::after {
  content: "→";
}

/* --------------------------------------------------------------------------
   4. Pages —— 各页面专属模块样式
   -------------------------------------------------------------------------- */

/* ======================= 4.1 首页 index.html ======================= */

/* ---------- Hero 错落卡片组 ---------- */
.hero-lead {
  padding-top: 40px;
  padding-bottom: 24px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 20px;
}

.hero-main-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
}

.hero-main-card h1 {
  font-size: 40px;
  margin-bottom: 12px;
  max-width: 640px;
}

.hero-tagline {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.hero-description {
  font-size: 15px;
  color: var(--color-ink-soft);
  max-width: 620px;
  margin-bottom: 24px;
}

.hero-media {
  margin: 8px 0 24px;
}

.hero-figure {
  aspect-ratio: 16 / 8;
  overflow: hidden;
  border-radius: var(--radius-md);
}

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

.hero-actions {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  margin-top: auto;
}

.hero-actions .link-arrow {
  font-size: 15px;
  font-weight: 500;
}

/* Hero 右侧两枚小卡 */
.hero-side-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-mini-card {
  background: var(--color-accent-soft);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  flex: 1;
}

.hero-mini-card .mini-title {
  font-size: 18px;
  margin-bottom: 10px;
}

.hero-mini-card p {
  font-size: 14px;
  color: var(--color-ink-soft);
}

/* ---------- 读者路径卡 ---------- */
.reader-paths {
  padding: 48px 0;
  border-top: 1px solid var(--color-line);
}

.path-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.path-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 24px;
}

.path-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.path-card p {
  font-size: 14px;
  color: var(--color-ink-soft);
  margin-bottom: 16px;
}

.path-card a {
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.path-card a::after {
  content: "→";
}

/* ---------- 服务矩阵 ---------- */
.service-matrix {
  padding: 48px 0;
  border-top: 1px solid var(--color-line);
}

.matrix-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.matrix-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: border-color var(--transition-fast);
}

.matrix-item:hover {
  border-color: var(--color-accent);
}

.matrix-item .step-number {
  display: block;
  margin-bottom: 8px;
}

.matrix-item h3 {
  font-size: 19px;
  margin-bottom: 8px;
}

.matrix-item p {
  font-size: 14px;
  color: var(--color-ink-soft);
  margin-bottom: 12px;
}

.matrix-item a {
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.matrix-item a::after {
  content: "→";
}

/* ---------- 工作方法快照 ---------- */
.method-snapshot {
  padding: 48px 0;
  border-top: 1px solid var(--color-line);
}

.method-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: start;
}

.method-image {
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.method-image figure {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: var(--radius-md);
}

.method-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.method-steps .step-intro {
  font-size: 15px;
  color: var(--color-ink-soft);
  margin-bottom: 24px;
}

.steps-list {
  counter-reset: method-step;
}

.steps-list li {
  counter-increment: method-step;
  padding: 18px 0;
  border-bottom: 1px solid var(--color-line);
}

.steps-list li:first-child {
  padding-top: 0;
}

.steps-list li h3 {
  font-size: 18px;
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.steps-list li h3::before {
  content: "0" counter(method-step);
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 600;
}

.steps-list li p {
  font-size: 14px;
  color: var(--color-ink-soft);
}

.method-steps > .link-arrow {
  margin-top: 20px;
  font-size: 15px;
  font-weight: 500;
}

/* ---------- 交付摘要 ---------- */
.delivery-summary {
  padding: 48px 0;
  border-top: 1px solid var(--color-line);
}

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

.summary-col {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px 24px;
}

.summary-col h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.summary-col p {
  font-size: 14px;
  color: var(--color-ink-soft);
  margin-bottom: 16px;
}

.summary-col a {
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.summary-col a::after {
  content: "→";
}

/* ---------- FAQ 精要 ---------- */
.faq-teaser {
  padding: 48px 0;
  border-top: 1px solid var(--color-line);
}

.faq-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 20px;
}

.faq-header h2 {
  font-size: 26px;
}

.faq-header a {
  font-size: 14px;
  font-weight: 500;
}

.faq-header a::after {
  content: "→";
  margin-left: 4px;
}

/* ---------- 下一步路径 ---------- */
.next-steps {
  padding: 40px 0;
}

.next-steps > h2 {
  margin-bottom: 20px;
}

.next-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* ======================= 4.2 服务范围 tx/service.html ======================= */

/* 页面标记类：限定模块作用域 */
.page-service .service-block {
  margin-top: 40px;
}

/* 服务引言 */
.service-lead {
  padding: 32px 0 8px;
}

.service-lead .section-title {
  margin-bottom: 12px;
}

.service-lead p {
  font-size: 15px;
  color: var(--color-ink-soft);
  max-width: 720px;
}

/* 锚点索引条 */
.anchor-chips {
  position: sticky;
  top: calc(var(--header-h) - 1px);
  z-index: 50;
  background: var(--color-bg);
  padding: 12px 0;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 32px;
}

.anchor-chips ul {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.anchor-chips li a {
  display: inline-block;
  padding: 8px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  font-size: 14px;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
}

.anchor-chips li a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* 服务区块 */
.service-block {
  margin-bottom: 48px;
  scroll-margin-top: calc(var(--header-h) + 60px);
}

.block-intro {
  margin-bottom: 24px;
  padding-left: 16px;
  border-left: 3px solid var(--color-accent);
}

.block-intro .step-number {
  display: block;
  margin-bottom: 4px;
}

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

.block-intro p {
  font-size: 15px;
  color: var(--color-ink-soft);
  max-width: 720px;
}

/* 服务卡网格 */
.service-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.service-card-grid.three-col {
  grid-template-columns: repeat(3, 1fr);
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 24px;
}

.service-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.service-card p {
  font-size: 14px;
  color: var(--color-ink-soft);
}

/* 服务区块中的配图 */
.service-figure {
  margin-top: 20px;
}

.service-figure img {
  aspect-ratio: 21 / 9;
  width: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.service-figure figcaption {
  font-size: 13px;
  color: var(--color-ink-soft);
  margin-top: 8px;
}

/* ======================= 4.3 工作方法 tx/method.html ======================= */

.page-method .method-section {
  margin-top: 48px;
}

/* 方法导言 */
.method-lead {
  padding: 32px 0 8px;
}

.method-lead .section-title {
  margin-bottom: 12px;
}

.method-lead p {
  font-size: 15px;
  color: var(--color-ink-soft);
  max-width: 720px;
}

/* 方法章节通用头 */
.method-section-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.method-section-head .step-number {
  font-size: 16px;
}

.method-section-head .section-title {
  font-size: 24px;
  margin: 0;
}

.section-intro {
  font-size: 15px;
  color: var(--color-ink-soft);
  max-width: 720px;
  margin-bottom: 24px;
}

/* 五问收敛（编号步骤） */
.method-steps {
  counter-reset: method-step;
}

.method-step {
  counter-increment: method-step;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-line);
}

.method-step h3 {
  font-size: 17px;
  margin-bottom: 4px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.method-step h3::before {
  content: counter(method-step, decimal-leading-zero);
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 600;
}

.method-step p {
  font-size: 14px;
  color: var(--color-ink-soft);
  max-width: 640px;
}

.section-note {
  margin-top: 16px;
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 500;
}

/* 叙事与分镜设计（三卡片） */
.method-block {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.method-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 24px;
}

.method-card h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.method-card p {
  font-size: 14px;
  color: var(--color-ink-soft);
}

.method-figure {
  margin-top: 16px;
}

.method-figure img {
  aspect-ratio: 21 / 8;
  width: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

/* 拍摄规则与修改机制（列表式条目） */
.method-list {
  display: grid;
  gap: 16px;
}

.method-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
}

.method-item h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.method-item p {
  font-size: 14px;
  color: var(--color-ink-soft);
}

/* 协作原则（短表） */
.method-principle {
  margin-top: 48px;
  background: var(--color-accent-soft);
  border-radius: var(--radius-md);
  padding: 32px;
}

.method-principle .section-title {
  font-size: 22px;
  margin-bottom: 16px;
}

.principle-list {
  display: grid;
  gap: 10px;
}

.principle-list li {
  display: flex;
  gap: 12px;
  font-size: 15px;
}

.principle-list li::before {
  content: "—";
  color: var(--color-accent);
  font-weight: 600;
}

/* 相关页网格（method 页尾） */
.page-method .related-pages {
  margin-top: 48px;
}

.related-grid .related-card {
  display: block;
}

.related-grid .related-card h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.related-grid .related-card p {
  font-size: 13px;
}

/* ======================= 4.4 交付标准 tx/quality.html ======================= */

/* 交付包 */
.deliverable-package {
  padding-top: 32px;
}

.deliverable-package h2,
.acceptance-checklist h2,
.supplement-rules h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.section-desc {
  margin-bottom: 24px;
}

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

.package-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 24px;
}

.package-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.package-card p {
  font-size: 14px;
  color: var(--color-ink-soft);
}

/* 验收清单 */
.acceptance-checklist {
  margin-top: 48px;
}

.checklist-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.checklist-grid li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  font-size: 15px;
}

.checklist-grid li::before {
  content: "✓";
  color: var(--color-accent);
  font-weight: 600;
  flex-shrink: 0;
}

/* 补充与重做 */
.supplement-rules {
  margin-top: 48px;
}

.rule-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.rule-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 24px;
}

.rule-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
  color: var(--color-accent);
}

.rule-item p {
  font-size: 14px;
  color: var(--color-ink-soft);
}

/* 交付标准页相关链接（块状） */
.related-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.related-links a {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-size: 14px;
  font-weight: 500;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

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

/* 配图 */
.delivery-media {
  margin-top: 32px;
}

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

/* ======================= 4.5 合作流程 tx/process.html ======================= */

.process-lead {
  padding: 32px 0 16px;
}

.process-lead .section-title {
  margin-bottom: 12px;
}

.process-lead p {
  font-size: 15px;
  color: var(--color-ink-soft);
  max-width: 720px;
}

/* 时间线流程节点 */
.process-step {
  margin-top: 24px;
  scroll-margin-top: calc(var(--header-h) + 40px);
  position: relative;
}

.process-step::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--color-line);
}

.step-wrapper {
  position: relative;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
}

.step-wrapper .step-number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border-radius: 50%;
  z-index: 1;
  line-height: 1;
}

.step-content {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px;
}

.step-title {
  font-size: 22px;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 15px;
  color: var(--color-ink-soft);
  margin-bottom: 16px;
}

.step-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.detail-item {
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 16px;
}

.detail-item h3 {
  font-size: 15px;
  margin-bottom: 6px;
}

.detail-item p {
  font-size: 14px;
  color: var(--color-ink-soft);
}

.step-related {
  margin-top: 16px;
}

.step-related a {
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.step-related a::after {
  content: "→";
}

/* 流程中的配图 */
.process-media {
  margin-top: 16px;
}

.process-media img {
  aspect-ratio: 21 / 8;
  width: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

/* 流程页尾的相关链接 */
.page-process .related-pages {
  margin-top: 48px;
}

/* ======================= 4.6 常见问题 tx/faq.html ======================= */

/* FAQ 页头区（与其它内页不同，description 在上） */
.page-faq .page-header {
  display: flex;
  flex-direction: column;
}

.page-faq .page-description {
  order: -1;
  margin-bottom: 4px;
}

.page-faq .page-title {
  margin-bottom: 4px;
}

.page-faq .page-lead {
  font-size: 15px;
  color: var(--color-ink-soft);
}

/* 概览区 */
.faq-overview {
  padding: 32px 0 8px;
}

.faq-overview .section-title {
  margin-bottom: 12px;
}

.content-media-inline {
  float: right;
  width: 280px;
  margin: 0 0 16px 24px;
}

.content-media-inline img {
  aspect-ratio: 4 / 3;
  width: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.content-media-inline figcaption {
  font-size: 12px;
  color: var(--color-ink-soft);
  margin-top: 4px;
}

.faq-overview .section-intro {
  max-width: 720px;
}

.overview-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.overview-links a {
  display: inline-block;
  padding: 8px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  font-size: 14px;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

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

/* FAQ 分组 */
.faq-group {
  margin-top: 40px;
  scroll-margin-top: calc(var(--header-h) + 40px);
}

.faq-group-header {
  margin-bottom: 16px;
}

.faq-group-header .group-number {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 4px;
}

.faq-group-header .section-title {
  font-size: 22px;
  margin-bottom: 4px;
}

.faq-group-header .group-desc {
  font-size: 14px;
  color: var(--color-ink-soft);
}

/* FAQ 页相关网格 */
.page-faq .related-grid {
  grid-template-columns: repeat(4, 1fr);
}

.page-faq .related-grid .related-card h3 {
  font-size: 17px;
}

.page-faq .related-grid .related-card p {
  font-size: 13px;
}

.page-faq .related-grid .related-card a {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-accent);
}

/* ======================= 4.7 咨询准备 tx/guide.html ======================= */

/* 页头 */
.page-guide .page-header {
  display: flex;
  flex-direction: column;
}

.page-guide .page-description {
  order: -1;
  margin-bottom: 4px;
}

.page-guide .page-title {
  margin-bottom: 4px;
}

.page-intro {
  font-size: 15px;
  color: var(--color-ink-soft);
}

/* 双栏布局：主体左，aside 在 DOM 中位于主体之后 */
.page-layout.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 40px;
  align-items: start;
  padding-top: 32px;
}

/* 引导区 */
.guide-lead {
  margin-bottom: 32px;
}

.guide-lead .section-title {
  margin-bottom: 8px;
}

.guide-lead p {
  font-size: 15px;
  color: var(--color-ink-soft);
  max-width: 720px;
}

.guide-figure {
  margin-top: 16px;
}

.guide-figure img {
  aspect-ratio: 21 / 8;
  width: 100%;
  object-fit: cover;
}

/* 主体清单 */
.guide-checklist .section-lead,
.guide-questions .section-lead {
  font-size: 15px;
  color: var(--color-ink-soft);
  margin-bottom: 20px;
}

.checklist-group {
  margin-bottom: 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 24px;
}

.checklist-heading {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.checklist-heading .group-number {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--color-accent);
}

.checklist-item {
  padding: 8px 0;
}

.question-label {
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 2px;
}

.question-hint {
  font-size: 13px;
  color: var(--color-ink-soft);
}

/* 参考提问 */
.question-card {
  background: var(--color-accent-soft);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-bottom: 12px;
}

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

.question-card p {
  font-size: 14px;
  color: var(--color-ink-soft);
}

/* 右侧辅助目录 */
.aside-guide-nav {
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.aside-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 24px;
}

.aside-title {
  font-size: 18px;
  margin-bottom: 8px;
}

.aside-desc {
  font-size: 14px;
  color: var(--color-ink-soft);
  margin-bottom: 16px;
}

.aside-links li {
  border-bottom: 1px solid var(--color-line);
  padding: 10px 0;
}

.aside-links li:last-child {
  border-bottom: none;
}

.aside-links a {
  display: block;
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 2px;
}

.aside-links a::before {
  content: "→";
  color: var(--color-accent);
  margin-right: 6px;
}

.aside-links p {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.6;
}

/* 页尾相关网格 */
.page-guide .related-grid {
  grid-template-columns: repeat(3, 1fr);
}

.page-guide .related-card h3 {
  font-size: 17px;
}

.page-guide .related-card p {
  font-size: 13px;
}

.page-guide .related-card a {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-accent);
}

/* ======================= 4.8 404 页 ======================= */

.site-error .site-main {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.error-panel {
  padding: 60px 24px;
}

.error-code {
  font-family: var(--font-serif);
  font-size: 72px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 12px;
}

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

.error-desc {
  font-size: 15px;
  color: var(--color-ink-soft);
  max-width: 480px;
  margin: 0 auto 24px;
}

.error-back {
  display: inline-block;
  padding: 10px 24px;
  background: var(--color-accent);
  color: var(--color-surface);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  transition: background-color var(--transition-fast);
}

.error-back:hover {
  background-color: var(--color-ink);
  color: var(--color-surface);
}

.error-links {
  margin-top: 40px;
}

.error-links h2 {
  font-size: 20px;
  margin-bottom: 16px;
}

.error-links ul {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.error-links a {
  font-size: 15px;
  color: var(--color-accent);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   5. Responsive —— 响应式断点
   -------------------------------------------------------------------------- */

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

  .hero-main-card {
    grid-column: 1 / -1;
  }

  .hero-side-cards {
    flex-direction: row;
  }

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

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

/* ---------- 移动端（≤ 768px） ---------- */
@media (max-width: 768px) {
  :root {
    --header-h: 60px;
    --container-pad: 16px;
  }

  h1 {
    font-size: 30px;
  }

  h2 {
    font-size: 22px;
  }

  h3 {
    font-size: 18px;
  }

  /* 页头 */
  .header-inner {
    height: var(--header-h);
    gap: 12px;
  }

  .brand-name {
    font-size: 24px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
    box-shadow: 0 8px 16px rgba(42, 44, 46, 0.08);
  }

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

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

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

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

  .nav-list a {
    display: block;
    padding: 12px 8px;
    font-size: 16px;
  }

  .nav-list a.is-current {
    border-bottom: none;
  }

  /* 页脚 */
  .footer-layout {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 32px;
    padding-bottom: 32px;
  }

  /* 首页模块 */
  .hero-lead {
    padding-top: 20px;
  }

  .hero-main-card {
    padding: 24px 20px;
  }

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

  .hero-side-cards {
    flex-direction: column;
  }

  .path-cards,
  .next-cards {
    grid-template-columns: 1fr;
  }

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

  .method-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .method-image {
    position: static;
  }

  .method-image figure {
    aspect-ratio: 16 / 9;
  }

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

  .faq-header {
    flex-direction: column;
    gap: 8px;
  }

  /* 内页通用 */
  .page-title {
    font-size: 28px;
  }

  /* 服务范围 */
  .anchor-chips {
    position: static;
    top: auto;
    margin-bottom: 24px;
  }

  .anchor-chips ul {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .anchor-chips li {
    flex-shrink: 0;
  }

  .service-card-grid,
  .service-card-grid.three-col {
    grid-template-columns: 1fr;
  }

  /* 工作方法 */
  .method-block {
    grid-template-columns: 1fr;
  }

  .method-figure img,
  .service-figure img {
    aspect-ratio: 16 / 9;
  }

  .method-principle {
    padding: 24px 20px;
  }

  /* 交付标准 */
  .package-grid {
    grid-template-columns: 1fr;
  }

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

  .rule-cols {
    grid-template-columns: 1fr;
  }

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

  /* 合作流程 */
  .step-wrapper {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .process-step::before {
    display: none;
  }

  .step-content {
    padding: 20px;
  }

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

  .method-step h3,
  .steps-list li h3 {
    flex-direction: column;
    gap: 2px;
  }

  /* FAQ */
  .content-media-inline {
    float: none;
    width: 100%;
    margin: 0 0 16px;
  }

  .faq-overview .section-intro {
    clear: both;
  }

  .faq-group-header .section-title {
    font-size: 20px;
  }

  /* 咨询准备 */
  .page-layout.guide-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .aside-guide-nav {
    position: static;
  }

  .guide-figure img,
  .process-media img,
  .delivery-media img {
    aspect-ratio: 16 / 9;
  }

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

  .error-links ul {
    flex-direction: column;
    gap: 8px;
  }
}

/* ---------- 超小屏（≤ 480px） ---------- */
@media (max-width: 480px) {
  h1 {
    font-size: 26px;
  }

  h2 {
    font-size: 20px;
  }

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

  .hero-actions {
    flex-direction: column;
    gap: 10px;
  }

  .faq-item summary {
    font-size: 15px;
    padding: 14px 16px;
  }

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

  .related-grid,
  .page-faq .related-grid,
  .page-guide .related-grid {
    grid-template-columns: 1fr;
  }

  .checklist-group {
    padding: 20px 16px;
  }

  .checklist-grid li {
    font-size: 14px;
    padding: 12px 14px;
  }

  .step-content {
    padding: 16px;
  }
}

/* ---------- 打印：去除背景与阴影 ---------- */
@media print {
  .site-header,
  .site-footer,
  .nav-toggle,
  .anchor-chips,
  .breadcrumb {
    display: none;
  }

  body {
    background: #fff;
  }

  .site-main {
    max-width: 100%;
    padding: 0;
    min-height: auto;
  }
}

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