/* ==========================================================
   糖心芋圆 · 企业官网
   自然科普风 · 白底 · 标本卡片 · 圆角小标签
   ========================================================== */

/* ==========================================================
   Base
   ========================================================== */

:root {
  --color-bg: #F7F3EB;
  --color-ink: #2F2A22;
  --color-brown: #A6532D;
  --color-green: #6F7D52;
  --color-gold: #D9A441;
  --color-line: #E7DFD0;
  --color-white: #FFFFFF;
  --color-bg-soft: #F1EBDF;
  --color-muted: #6E675C;
  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --transition-base: 0.2s ease;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-ink);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

/* 全局容器 */
.header-inner,
.site-main > .container,
.footer-inner {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================
   Layout · 全站骨架（程序锁定）
   ========================================================== */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

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

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

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

.footer-inner {
  padding-top: 48px;
  padding-bottom: 32px;
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

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

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 12px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: var(--color-muted);
}

.footer-col ul li a:hover {
  color: var(--color-brown);
}

.footer-bottom {
  border-top: 1px solid var(--color-line);
  padding: 16px 24px;
  text-align: center;
  font-size: 13px;
  color: var(--color-muted);
}

/* ==========================================================
   Layout · 内页统一模板
   ========================================================== */

.inner-main {
  padding-bottom: 64px;
}

.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px 24px 0;
  font-size: 14px;
  color: var(--color-muted);
}

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

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

.breadcrumb-sep {
  margin: 0 8px;
  color: var(--color-line);
}

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

.page-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 28px;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  color: var(--color-muted);
  max-width: 720px;
  line-height: 1.7;
}

/* 侧栏 + 主内容 布局 */
.layout-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  align-items: start;
}

/* 侧栏默认在左（.sidebar-left 直接搭配 .layout-shell） */
.sidebar-left {
  grid-template-columns: 220px 1fr;
}

.sidebar-left > .category-sidebar,
.sidebar-left > .sidebar-category {
  grid-column: 1;
}

.sidebar-left > .series-content,
.sidebar-left > .custom-content,
.sidebar-left > .cooperation-content,
.sidebar-left > .brand-content,
.sidebar-left > .faq-content {
  grid-column: 2;
}

/* ==========================================================
   Components · 导航
   ========================================================== */

.site-nav {
  display: flex;
  align-items: center;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
}

.nav-toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

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

.nav-list li a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-ink);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.nav-list li a:hover {
  color: var(--color-brown);
  background-color: var(--color-bg);
}

.nav-list li a.is-current {
  color: var(--color-brown);
  background-color: var(--color-bg);
  font-weight: 600;
}

/* ==========================================================
   Components · 首页
   ========================================================== */

/* 业务地图首屏 */
.hero-map {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px 40px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-copy h1 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 28px;
  max-width: 480px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.btn-primary {
  background-color: var(--color-brown);
  color: var(--color-white);
  border: 1px solid var(--color-brown);
}

.btn-primary:hover {
  background-color: #8F4526;
  border-color: #8F4526;
  color: var(--color-white);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-brown);
  border: 1px solid var(--color-brown);
}

.btn-secondary:hover {
  background-color: var(--color-bg);
  color: var(--color-brown);
}

.hero-media {
  position: relative;
}

.hero-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg-soft);
}

.hero-figure img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

/* 产品范围入口 */
.scope-entry-list {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 16px;
}

.scope-entry {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.scope-entry:hover {
  border-color: var(--color-gold);
}

.scope-entry img {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
}

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

/* 定位说明带 */
.positioning-band {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.positioning-band p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-ink);
  max-width: 900px;
}

/* 摄影作品式推荐区 */
.showcase-feature {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: stretch;
}

.showcase-media {
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg-soft);
}

.showcase-media img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.showcase-media:hover img {
  transform: scale(1.02);
}

.showcase-meta {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.showcase-meta h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 16px;
  line-height: 1.3;
}

.showcase-meta p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.showcase-meta .meta-series,
.showcase-meta .meta-flavor,
.showcase-meta .meta-scene {
  padding-left: 12px;
  border-left: 3px solid var(--color-gold);
}

.showcase-meta .text-link {
  margin-top: 16px;
  font-weight: 600;
}

.series-index {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.series-index span {
  font-size: 13px;
  color: var(--color-muted);
  margin-right: 4px;
}

.series-index a {
  font-size: 13px;
  padding: 4px 12px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: var(--color-muted);
  transition: border-color var(--transition-base), color var(--transition-base);
}

.series-index a:hover {
  border-color: var(--color-brown);
  color: var(--color-brown);
}

/* 产品方向总览 */
.product-directory {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 56px;
}

.product-directory h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 28px;
}

.directory-list {
  border-top: 1px solid var(--color-line);
}

.directory-row {
  display: grid;
  grid-template-columns: 200px 1fr 120px;
  gap: 24px;
  align-items: center;
  padding: 20px 8px;
  border-bottom: 1px solid var(--color-line);
  transition: background-color var(--transition-base);
}

.directory-row:hover {
  background-color: var(--color-white);
}

.directory-row h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
}

.directory-row p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
}

.directory-row a {
  font-size: 14px;
  font-weight: 500;
  text-align: right;
}

/* 服务方式摘要 */
.service-summary {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 56px;
}

.service-summary h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 28px;
}

.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.service-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px;
}

.service-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.service-card a {
  font-size: 14px;
  font-weight: 600;
}

/* 合作流程四步 */
.process-steps {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 56px;
}

.process-steps h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 28px;
}

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

.step-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
}

.step-item::before {
  content: "";
  position: absolute;
  top: 24px;
  left: 0;
  width: 3px;
  height: 32px;
  background-color: var(--color-gold);
  border-radius: 0 2px 2px 0;
}

.step-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

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

/* 更新记录时间线 */
.updates-timeline {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 56px;
}

.updates-timeline h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 28px;
}

.timeline-list {
  border-left: 2px solid var(--color-line);
  padding-left: 24px;
}

.timeline-item {
  position: relative;
  padding-bottom: 24px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-gold);
  border: 2px solid var(--color-white);
}

.timeline-item time {
  display: block;
  font-size: 13px;
  font-family: "SF Mono", "Cascadia Mono", Consolas, monospace;
  color: var(--color-muted);
  margin-bottom: 4px;
}

.timeline-item p {
  font-size: 15px;
  color: var(--color-ink);
  line-height: 1.6;
}

/* FAQ 摘选 */
.faq-teaser {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 56px;
}

.faq-teaser h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 20px;
}

.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 44px;
  transition: background-color var(--transition-base);
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: 400;
  color: var(--color-brown);
  transition: transform var(--transition-base);
}

.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

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

.faq-item p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

.faq-teaser .text-link {
  display: inline-block;
  margin-top: 12px;
  font-weight: 600;
}

/* 相关链接（首页底部） */
.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

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

.related-links-item {
  font-size: 14px;
  padding: 6px 16px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: var(--color-muted);
  transition: border-color var(--transition-base), color var(--transition-base);
}

.related-links-item:hover {
  border-color: var(--color-brown);
  color: var(--color-brown);
}

/* ==========================================================
   Components · 内页侧栏
   ========================================================== */

.category-sidebar,
.sidebar-category {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 20px 0;
  position: sticky;
  top: 96px;
}

.category-sidebar h2,
.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ink);
  padding: 0 20px 12px;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 8px;
}

.sidebar-nav ul li a,
.sidebar-list li a,
.category-list li a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--color-muted);
  border-left: 3px solid transparent;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.sidebar-nav ul li a:hover,
.sidebar-list li a:hover,
.category-list li a:hover {
  background-color: var(--color-bg);
  color: var(--color-brown);
  border-left-color: var(--color-gold);
}

/* ==========================================================
   Components · 产品系列页
   ========================================================== */

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

.sort-control {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-bottom: 28px;
  gap: 12px;
}

.sort-control label {
  font-size: 14px;
  color: var(--color-muted);
}

.sort-control select {
  padding: 8px 12px;
  font-size: 14px;
  font-family: var(--font-main);
  color: var(--color-ink);
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-height: 40px;
}

.series-block {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 24px;
}

.series-block h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.series-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 20px;
  background-color: var(--color-bg-soft);
}

.series-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.series-meta {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 4px 16px;
  margin-bottom: 16px;
  padding: 12px 16px;
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
}

.series-meta dt {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-muted);
}

.series-meta dd {
  font-size: 14px;
  color: var(--color-ink);
}

.series-block > p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
}

/* 编辑推荐榜 */
.recommend-section {
  margin-top: 40px;
}

.recommend-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.recommend-section > p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 20px;
}

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

.recommend-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-base);
}

.recommend-card:hover {
  border-color: var(--color-gold);
}

.recommend-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.recommend-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  padding: 16px 16px 4px;
}

.recommend-card p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  padding: 0 16px 16px;
}

/* 更新记录（产品页） */
.updates-section {
  margin-top: 40px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px;
}

.updates-section h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.updates-section > p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 20px;
}

/* 下一步入口（产品页） */
.next-steps {
  margin-top: 32px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 24px 28px;
}

.next-steps p {
  font-size: 15px;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.next-steps ul {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.next-steps ul li a {
  font-size: 14px;
  font-weight: 600;
}

/* ==========================================================
   Components · 定制服务页
   ========================================================== */

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

.content-block {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 24px;
}

.content-block h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.block-intro {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

/* 定制范围 */
.scope-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.scope-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

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

/* 需求核对清单 */
.checklist-list {
  counter-reset: checklist;
}

.checklist-list li {
  position: relative;
  padding: 16px 16px 16px 56px;
  border-bottom: 1px solid var(--color-line);
  counter-increment: checklist;
}

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

.checklist-list li::before {
  content: counter(checklist);
  position: absolute;
  left: 16px;
  top: 16px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-gold);
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.checklist-list li h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.checklist-list li p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* 定制流程 */
.custom-process-block .process-steps {
  padding: 0;
}

.custom-process-block .process-steps h2 {
  display: none;
}

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

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

.process-step h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 6px;
}

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

/* 规则说明 */
.rules-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.rule-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

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

/* 定制页下一步 */
.next-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 12px;
}

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

.next-link {
  display: inline-block;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  background-color: var(--color-white);
  border: 1px solid var(--color-brown);
  border-radius: var(--radius-sm);
  color: var(--color-brown);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.next-link:hover {
  background-color: var(--color-brown);
  color: var(--color-white);
}

/* 媒体展示区 */
.media-block {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px;
}

.media-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg-soft);
}

.media-figure img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.media-figure figcaption {
  padding: 12px 16px;
  font-size: 14px;
  color: var(--color-muted);
  background-color: var(--color-white);
  border-top: 1px solid var(--color-line);
}

/* ==========================================================
   Components · 合作方式页
   ========================================================== */

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

.block-lead {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.content-media-inline {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 20px;
  background-color: var(--color-bg-soft);
}

.content-media-inline img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.content-media-inline figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-muted);
  background-color: var(--color-white);
  border-top: 1px solid var(--color-line);
}

/* 合作类型 */
.type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

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

.type-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.type-card p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 8px;
}

.card-note {
  font-size: 13px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-line);
  padding-top: 8px;
}

/* 适用场景 */
.scenario-list {
  display: grid;
  gap: 16px;
}

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

.scenario-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 6px;
}

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

/* 合作流程 */
.hezuo-process .step-item {
  background-color: var(--color-bg);
}

/* 合作规则 */
.rule-list li {
  position: relative;
  padding: 12px 0 12px 24px;
  border-bottom: 1px solid var(--color-line);
  font-size: 15px;
  color: var(--color-ink);
  line-height: 1.6;
}

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

.rule-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 20px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-gold);
}

/* 合作页下一步 */
.next-step {
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-top: 24px;
}

.next-step p {
  font-size: 15px;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.next-step p a {
  font-weight: 600;
  margin-right: 16px;
}

/* 合作页相关链接 */
.hezuo-related {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px;
}

/* ==========================================================
   Components · 品牌内容页
   ========================================================== */

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

.content-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 24px;
}

.content-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.content-section > p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

/* 词汇档案 */
.vocab-entry {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-bottom: 16px;
  background-color: var(--color-bg);
}

.vocab-entry h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.vocab-meta {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 8px;
  font-family: "SF Mono", "Cascadia Mono", Consolas, monospace;
}

.vocab-entry p:last-child {
  font-size: 14px;
  color: var(--color-ink);
  line-height: 1.6;
  margin-bottom: 0;
}

/* 风味记录 */
.flavor-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 20px;
  background-color: var(--color-bg-soft);
}

.flavor-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.flavor-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-muted);
  background-color: var(--color-white);
  border-top: 1px solid var(--color-line);
}

.content-section h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  margin: 16px 0 8px;
}

/* 内容边界 */
.boundary-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-line);
}

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

.boundary-list li h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.boundary-list li p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* 品牌页下一步 */
.brand-next {
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 24px 28px;
}

.brand-next p {
  font-size: 15px;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.brand-next p a {
  font-weight: 600;
}

/* ==========================================================
   Components · 常见问题页
   ========================================================== */

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

.page-header-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-top: 16px;
}

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

.faq-group h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.group-desc {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.faq-group .faq-item {
  margin-bottom: 12px;
}

.faq-group .faq-item p a {
  font-weight: 600;
  font-size: 14px;
}

/* FAQ 下一步 */
.next-entry {
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-top: 8px;
}

.next-entry h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 12px;
}

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

.next-links li a {
  font-size: 14px;
  font-weight: 600;
}

/* ==========================================================
   Components · 404 页
   ========================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  min-height: 60vh;
}

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

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-brown);
  line-height: 1;
  margin-bottom: 16px;
  font-family: "SF Mono", "Cascadia Mono", Consolas, monospace;
}

.error-section h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: var(--color-muted);
  margin-bottom: 24px;
  line-height: 1.7;
}

.error-btn {
  display: inline-block;
  padding: 10px 32px;
  font-size: 15px;
  font-weight: 600;
  background-color: var(--color-brown);
  color: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-brown);
  margin-bottom: 24px;
}

.error-btn:hover {
  background-color: #8F4526;
  color: var(--color-white);
}

.error-help {
  font-size: 14px;
  color: var(--color-muted);
}

.error-help a {
  margin: 0 8px;
  font-weight: 500;
}

/* ==========================================================
   Utilities
   ========================================================== */

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

.text-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-brown);
}

.text-link:hover {
  color: var(--color-green);
}

/* ==========================================================
   Responsive · ≤ 1024px
   ========================================================== */

@media (max-width: 1024px) {
  .hero-map {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-media {
    order: -1;
  }

  .hero-figure img {
    height: 300px;
  }

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

  .showcase-feature {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

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

  .layout-shell,
  .sidebar-left {
    grid-template-columns: 180px 1fr;
    gap: 24px;
  }
}

/* ==========================================================
   Responsive · ≤ 768px
   ========================================================== */

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

  .brand {
    font-size: 19px;
  }

  /* 移动端导航 */
  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-line);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 0;
    z-index: 99;
  }

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

  .nav-list li a {
    padding: 12px 24px;
    font-size: 16px;
    border-radius: 0;
  }

  /* 内页布局切换为单列 */
  .layout-shell,
  .sidebar-left {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 0 16px;
  }

  .sidebar-left > .category-sidebar,
  .sidebar-left > .sidebar-category {
    grid-column: 1;
    position: static;
    margin-bottom: 24px;
    border-radius: var(--radius-md);
  }

  .sidebar-left > .series-content,
  .sidebar-left > .custom-content,
  .sidebar-left > .cooperation-content,
  .sidebar-left > .brand-content,
  .sidebar-left > .faq-content {
    grid-column: 1;
  }

  /* 侧栏折叠为横向滚动条 */
  .sidebar-nav ul,
  .sidebar-list,
  .category-list {
    display: flex;
    overflow-x: auto;
    padding: 4px 8px;
    -webkit-overflow-scrolling: touch;
  }

  .sidebar-nav ul li,
  .sidebar-list li,
  .category-list li {
    flex-shrink: 0;
  }

  .sidebar-nav ul li a,
  .sidebar-list li a,
  .category-list li a {
    border-left: none;
    border-bottom: 2px solid transparent;
    padding: 8px 16px;
    white-space: nowrap;
  }

  .sidebar-nav ul li a:hover,
  .sidebar-list li a:hover,
  .category-list li a:hover {
    border-bottom-color: var(--color-gold);
  }

  .category-sidebar h2,
  .sidebar-title {
    border-bottom: none;
    padding-bottom: 4px;
    font-size: 14px;
  }

  /* 面包屑与标题 */
  .breadcrumb {
    padding: 16px 16px 0;
  }

  .page-header {
    padding: 24px 16px 20px;
  }

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

  /* 首页模块 */
  .hero-map {
    padding: 32px 16px 24px;
  }

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

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

  .scope-entry-list {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .scope-entry {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px;
  }

  .scope-entry img {
    width: 40px;
    height: 40px;
  }

  .entry-name {
    font-size: 14px;
  }

  .positioning-band {
    padding: 24px 16px;
  }

  .showcase-feature {
    padding: 32px 16px;
  }

  .showcase-media img {
    min-height: 240px;
  }

  .showcase-meta h2 {
    font-size: 22px;
  }

  .product-directory,
  .service-summary,
  .process-steps,
  .updates-timeline,
  .faq-teaser,
  .related-links {
    padding-left: 16px;
    padding-right: 16px;
  }

  .directory-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 16px 8px;
  }

  .directory-row a {
    text-align: left;
  }

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

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px 16px 24px;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .footer-bottom {
    padding: 12px 16px;
  }

  /* 产品页 */
  .sort-control {
    justify-content: flex-start;
  }

  .series-block {
    padding: 20px;
  }

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

  /* 定制页 */
  .scope-grid,
  .rules-list {
    grid-template-columns: 1fr;
  }

  .content-block {
    padding: 20px;
  }

  /* 合作页 */
  .type-grid {
    grid-template-columns: 1fr;
  }

  /* FAQ 页 */
  .page-header-img {
    height: 160px;
  }

  .faq-group {
    padding: 20px;
  }
}

/* ==========================================================
   Responsive · ≤ 480px
   ========================================================== */

@media (max-width: 480px) {
  .scope-entry-list {
    grid-template-columns: 1fr;
  }

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

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  .series-index {
    gap: 6px;
  }

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

  .next-links {
    flex-direction: column;
    align-items: stretch;
  }

  .next-link {
    text-align: center;
  }

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

/* ==========================================================
   Reduced Motion
   ========================================================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}