/* ==========================================================================
   糖心vlog 内容导航站 · 全站样式表
   设计方向：明亮底色 / 圆角卡片 / 暖橙与浅蓝搭配 / 教育感可扫描路径
   ========================================================================== */

/* ==========================================================================
   Base — 基础变量、重置与全局元素
   ========================================================================== */

:root {
  --color-primary: #FF6B4A;
  --color-secondary: #3B82C4;
  --color-bg: #FAF7F2;
  --color-accent: #FFC94A;
  --color-text: #26233A;
  --color-body: #4B4756;
  --color-white: #FFFFFF;
  --color-border: #E8E2D8;
  --color-bg-soft: #F1ECE4;
  --color-text-light: #7A7686;

  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;

  --shadow-sm: 0 1px 3px rgba(38, 35, 58, 0.08);
  --shadow-md: 0 4px 16px rgba(38, 35, 58, 0.08);
  --shadow-lg: 0 8px 28px rgba(38, 35, 58, 0.12);

  --transition-base: 0.25s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-body);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

h1,
h2,
h3,
h4 {
  color: var(--color-text);
  font-weight: 700;
  line-height: 1.35;
}

/* ==========================================================================
   Layout — 全站骨架、页头、页脚、主容器
   ========================================================================== */

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

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0;
}

.brand-name::first-letter {
  color: var(--color-primary);
}

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

.site-nav .nav-list a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 0.95rem;
  color: var(--color-body);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.site-nav .nav-list a:hover {
  color: var(--color-primary);
  background-color: var(--color-bg-soft);
}

.site-nav .nav-list a.is-current {
  color: var(--color-primary);
  background-color: rgba(255, 107, 74, 0.08);
  font-weight: 600;
}

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

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

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

.site-footer {
  background-color: var(--color-text);
  color: rgba(255, 255, 255, 0.75);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.2fr;
  gap: 40px;
}

.footer-brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 14px;
}

.footer-nav-list li + li {
  margin-top: 8px;
}

.footer-nav-list a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

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

.footer-note-text {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-bottom p {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 18px 24px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.45);
  text-align: center;
}

/* ==========================================================================
   Components — 按钮、面包屑、页面标题、卡片、标签、通用模块
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 28px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  transition: background-color var(--transition-base), color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

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

.btn-primary:hover {
  background-color: #F05A3A;
  color: var(--color-white);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  transform: translateY(-2px);
}

.btn-light {
  background-color: var(--color-white);
  color: var(--color-text);
}

.btn-light:hover {
  background-color: var(--color-accent);
  color: var(--color-text);
  transform: translateY(-2px);
}

.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 18px 24px 0;
  font-size: 0.88rem;
  color: var(--color-text-light);
}

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

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

.breadcrumb-sep {
  margin: 0 8px;
  color: #C8C2B8;
}

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

.page-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 28px 24px 8px;
}

.page-title {
  font-size: 2rem;
  color: var(--color-text);
  margin-bottom: 10px;
}

.page-description {
  font-size: 1rem;
  color: var(--color-body);
  max-width: 760px;
  line-height: 1.7;
}

.section-title {
  font-size: 1.5rem;
  color: var(--color-text);
  margin-bottom: 12px;
}

.section-lead,
.section-desc,
.section-intro {
  font-size: 0.98rem;
  color: var(--color-body);
  max-width: 720px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.82rem;
  color: var(--color-secondary);
  background-color: rgba(59, 130, 196, 0.08);
  border-radius: 20px;
  line-height: 1.5;
}

.tag-item {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.82rem;
  color: var(--color-secondary);
  background-color: rgba(59, 130, 196, 0.08);
  border-radius: 20px;
  line-height: 1.5;
}

.text-link {
  display: inline-flex;
  align-items: center;
  font-weight: 600;
  font-size: 0.92rem;
}

.text-link::after {
  content: '→';
  margin-left: 4px;
  transition: transform var(--transition-base);
}

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

/* ==========================================================================
   Components — 首页锚点快速条
   ========================================================================== */

.anchor-nav {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 68px;
  z-index: 90;
}

.anchor-nav-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.anchor-nav-inner::-webkit-scrollbar {
  display: none;
}

.anchor-nav-inner a {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  min-height: 44px;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-body);
  border-bottom: 2px solid transparent;
}

.anchor-nav-inner a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ==========================================================================
   Components — 首页 Hero 主视觉
   ========================================================================== */

.hero-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 56px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  padding-right: 12px;
}

.hero-title {
  font-size: 2.25rem;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-title span {
  color: var(--color-primary);
}

.hero-desc {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--color-body);
  margin-bottom: 28px;
  max-width: 520px;
}

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

.hero-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

/* ==========================================================================
   Components — 首页场景卡、频道卡、流程时间线、提示卡
   ========================================================================== */

.scene-section,
.channel-section,
.flow-section,
.notice-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
}

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

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

.section-head .section-lead {
  margin-bottom: 0;
}

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

.scene-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.scene-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.scene-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 14px;
}

.scene-card .scene-name {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.scene-card .scene-desc {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--color-body);
  margin-bottom: 12px;
}

.scene-card a {
  font-size: 0.88rem;
  font-weight: 600;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.channel-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.channel-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.channel-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.channel-card .channel-name {
  font-size: 1.15rem;
  margin-bottom: 6px;
}

.channel-card .channel-desc {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--color-body);
  margin-bottom: 14px;
}

.channel-card .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.channel-card > a {
  display: inline-block;
  font-weight: 600;
  font-size: 0.9rem;
}

/* 首页 channel-card 与 channel 页同名，需用父级限定 */
.channel-grid .channel-card {
  padding: 0;
}

.channel-grid .channel-card .channel-name,
.channel-grid .channel-card .channel-desc,
.channel-grid .channel-card .tag-list,
.channel-grid .channel-card > a {
  margin-left: 20px;
  margin-right: 20px;
}

.channel-grid .channel-card .channel-name {
  margin-top: 18px;
}

.channel-grid .channel-card > a {
  margin-bottom: 20px;
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.flow-step {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.flow-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 14px;
}

.flow-step .step-name {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.flow-step .step-desc {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--color-body);
}

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

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

.notice-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.notice-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.notice-card .notice-name {
  font-size: 1.1rem;
  margin-bottom: 10px;
  position: relative;
  padding-left: 18px;
}

.notice-card .notice-name::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.notice-card .notice-desc {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--color-body);
  margin-bottom: 14px;
}

.notice-card a {
  font-size: 0.88rem;
  font-weight: 600;
}

/* ==========================================================================
   Components — 首页问题反馈横幅
   ========================================================================== */

.feedback-banner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 56px;
}

.banner-inner {
  background-color: var(--color-primary);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.banner-title {
  color: var(--color-white);
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.banner-desc {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 560px;
}

.banner-inner .btn-light {
  flex-shrink: 0;
}

/* ==========================================================================
   Pages — 内页公共布局（channel / topics / flow / notice / feedback）
   ========================================================================== */

.inner-main {
  padding-bottom: 56px;
}

.page-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 0;
  display: grid;
  grid-template-columns: 75% 25%;
  gap: 32px;
  align-items: start;
}

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

.layout-aside {
  min-width: 0;
}

.aside-inner {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 132px;
}

.aside-title {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.aside-desc {
  font-size: 0.88rem;
  color: var(--color-body);
  line-height: 1.6;
  margin-bottom: 16px;
}

.aside-link-list li + li {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

.aside-link-item a {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 4px;
}

.aside-link-desc {
  display: block;
  font-size: 0.82rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* 内页底部相关链接条 */
.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.related-links-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-right: 8px;
}

.related-links-item {
  font-size: 0.88rem;
  color: var(--color-secondary);
  background-color: rgba(59, 130, 196, 0.08);
  padding: 6px 14px;
  border-radius: 20px;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.related-links-item:hover {
  background-color: rgba(59, 130, 196, 0.16);
  color: var(--color-secondary);
}

/* ==========================================================================
   Pages — channel.html 频道导览
   ========================================================================== */

.channel-anchor-section {
  margin-bottom: 32px;
}

.anchor-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.anchor-tag {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 18px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-body);
  transition: border-color var(--transition-base), color var(--transition-base), background-color var(--transition-base);
}

.anchor-tag:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: rgba(255, 107, 74, 0.04);
}

.channel-list-section .channel-card {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  margin-bottom: 20px;
}

.channel-media {
  overflow: hidden;
}

.channel-media .channel-img {
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
}

.channel-info {
  padding: 24px 24px 20px;
}

.channel-info .channel-name {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.channel-info .channel-desc {
  font-size: 0.92rem;
  color: var(--color-body);
  line-height: 1.7;
  margin-bottom: 14px;
}

.tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.channel-link {
  display: inline-block;
  font-weight: 600;
  font-size: 0.9rem;
}

/* ==========================================================================
   Pages — topics.html 题材覆盖
   ========================================================================== */

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

.scene-gallery > .section-title {
  margin-bottom: 24px;
}

.scene-row {
  display: grid;
  grid-template-columns: 46% 54%;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.scene-row:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.scene-media {
  overflow: hidden;
}

.scene-media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.scene-body {
  padding: 28px 28px 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.scene-body .scene-name {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.scene-body .scene-desc {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: 16px;
}

.scene-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.scene-tag-label {
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-right: 2px;
}

.tag-link {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.82rem;
  color: var(--color-secondary);
  background-color: rgba(59, 130, 196, 0.08);
  border-radius: 20px;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.tag-link:hover {
  background-color: rgba(59, 130, 196, 0.16);
  color: var(--color-secondary);
}

.topic-channel-map {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 0;
}

.channel-map-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.map-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.map-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.map-card-title {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.map-card-desc {
  font-size: 0.86rem;
  color: var(--color-body);
  line-height: 1.6;
  margin-bottom: 14px;
}

.map-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.map-tag-list li {
  font-size: 0.8rem;
  color: var(--color-text-light);
  background-color: var(--color-bg-soft);
  padding: 3px 10px;
  border-radius: 14px;
}

.related-reading {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 0;
}

.related-reading .section-title {
  margin-bottom: 8px;
}

.related-link-list {
  margin-top: 20px;
}

.related-link-list li + li {
  margin-top: 10px;
}

.related-link-list a {
  font-weight: 600;
  font-size: 0.95rem;
}

/* ==========================================================================
   Pages — flow.html 观看流程
   ========================================================================== */

.content-media {
  margin: 8px 0 20px;
}

.content-media-inline {
  max-width: 720px;
}

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

.content-media figcaption {
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-top: 8px;
  text-align: center;
}

.flow-steps .section-title {
  margin-bottom: 8px;
}

.flow-steps .section-intro {
  margin-bottom: 28px;
}

.step-list {
  position: relative;
  max-width: 820px;
}

.step-list::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background-color: var(--color-border);
}

.step-card {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding-bottom: 32px;
}

.step-card:last-child {
  padding-bottom: 0;
}

.step-number {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--color-white);
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.15rem;
}

.step-content {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
}

.step-content h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.step-content > p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: 14px;
}

.check-block {
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  border-left: 3px solid var(--color-accent);
}

.check-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

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

.check-list li {
  font-size: 0.85rem;
  color: var(--color-body);
  padding-left: 18px;
  position: relative;
  line-height: 1.6;
}

.check-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.overview-table {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 0;
}

.overview-table .section-title {
  margin-bottom: 8px;
}

.overview-table .section-intro {
  margin-bottom: 20px;
}

.table-wrap {
  overflow-x: auto;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.flow-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 640px;
}

.flow-table th,
.flow-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.6;
}

.flow-table th {
  background-color: var(--color-bg-soft);
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

.flow-table tr:last-child td {
  border-bottom: none;
}

.flow-table td:first-child {
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

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

.related-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.related-card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.related-card p {
  font-size: 0.86rem;
  color: var(--color-body);
  line-height: 1.6;
}

/* ==========================================================================
   Pages — notice.html 注意事项
   ========================================================================== */

.notice-hero-figure {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 0;
}

.notice-hero-img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.notice-hero-figure figcaption {
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-top: 8px;
  text-align: center;
}

.notice-cards {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 0;
}

.notice-cards .section-title {
  margin-bottom: 20px;
}

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

.notice-card-grid .notice-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  box-shadow: var(--shadow-sm);
}

.notice-card-title {
  font-size: 1.1rem;
  margin-bottom: 10px;
  position: relative;
  padding-left: 18px;
}

.notice-card-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.notice-card-text {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--color-body);
}

.notice-detail {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 0;
}

.notice-detail .section-title {
  margin-bottom: 20px;
}

.notice-detail-block {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 26px 28px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

.notice-detail-heading {
  font-size: 1.1rem;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.notice-detail-body p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: 10px;
  padding-left: 16px;
  position: relative;
}

.notice-detail-body p::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-secondary);
}

.notice-detail-body .detail-question {
  font-weight: 600;
  color: var(--color-text);
}

.notice-detail-body .detail-check {
  color: var(--color-text);
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-top: 12px;
  font-size: 0.88rem;
}

.notice-detail-body .detail-check::before {
  content: '检查点：';
  font-weight: 600;
  background: none;
  position: static;
  width: auto;
  height: auto;
  border-radius: 0;
}

/* ==========================================================================
   Pages — feedback.html 问题反馈
   ========================================================================== */

.faq-section,
.troubleshoot-section,
.feedback-path-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 0;
}

.faq-list {
  margin-top: 24px;
}

.faq-item {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: 14px;
  overflow: hidden;
}

.faq-item summary {
  padding: 18px 22px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  position: relative;
  padding-right: 48px;
  list-style: none;
  transition: 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: 1.4rem;
  font-weight: 400;
  color: var(--color-primary);
  transition: transform var(--transition-base);
}

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

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

.faq-content {
  padding: 0 22px 20px;
  border-top: 1px solid var(--color-border);
}

.faq-content > .faq-block {
  padding-top: 16px;
}

.faq-block {
  padding: 10px 0;
}

.faq-block h3 {
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 4px;
}

.faq-block p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-body);
}

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

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

.troubleshoot-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 22px 22px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.troubleshoot-card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--color-text);
}

.troubleshoot-card p {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--color-body);
}

.feedback-path-section {
  padding-bottom: 24px;
}

.feedback-path-content {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: grid;
  grid-template-columns: 40% 60%;
  margin-top: 20px;
}

.feedback-figure {
  overflow: hidden;
}

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

.feedback-figure figcaption {
  display: none;
}

.feedback-path-text {
  padding: 28px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
}

.feedback-path-text p {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--color-body);
}

.feedback-path-text a {
  font-weight: 600;
}

/* ==========================================================================
   Pages — 404 错误页
   ========================================================================== */

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

.error-panel {
  text-align: center;
  max-width: 560px;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  box-shadow: var(--shadow-md);
}

.error-code {
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 8px;
}

.error-title {
  font-size: 1.5rem;
  margin-bottom: 14px;
}

.error-desc {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: 28px;
}

.error-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 32px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: background-color var(--transition-base), transform var(--transition-base);
}

.error-btn:hover {
  background-color: #F05A3A;
  color: var(--color-white);
  transform: translateY(-2px);
}

/* ==========================================================================
   Responsive — 移动端与平板断点
   ========================================================================== */

@media (max-width: 1024px) {
  .inner-main {
    padding-bottom: 48px;
  }

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

  .footer-note {
    grid-column: 1 / -1;
  }

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

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

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

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    padding: 12px 16px;
    gap: 4px;
  }

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

  .nav-list a {
    display: block;
    padding: 12px 16px;
    font-size: 1rem;
    border-radius: var(--radius-md);
  }

  .anchor-nav {
    top: 60px;
  }

  .anchor-nav-inner {
    padding: 0 16px;
  }

  .anchor-nav-inner a {
    min-height: 40px;
    font-size: 0.85rem;
    padding: 8px 12px;
  }

  .hero-section {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 32px 16px 40px;
  }

  .hero-content {
    padding-right: 0;
  }

  .hero-title {
    font-size: 1.8rem;
  }

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

  .scene-section,
  .channel-section,
  .flow-section,
  .notice-section {
    padding: 36px 16px;
  }

  .scene-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .scene-card img {
    height: 120px;
  }

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

  .channel-grid .channel-card img {
    height: 180px;
  }

  .flow-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .notice-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .feedback-banner {
    padding: 0 16px 40px;
  }

  .banner-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 28px 24px;
    gap: 20px;
  }

  .banner-inner .btn-light {
    align-self: flex-start;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 36px 16px 28px;
  }

  .footer-bottom p {
    padding: 14px 16px;
  }

  /* 内页 */
  .breadcrumb {
    padding: 14px 16px 0;
  }

  .page-header {
    padding: 20px 16px 4px;
  }

  .page-title {
    font-size: 1.6rem;
  }

  .page-layout {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 20px 16px 0;
  }

  .layout-aside {
    order: 2;
  }

  .aside-inner {
    position: static;
    top: auto;
  }

  .related-links {
    padding: 20px 16px 0;
  }

  .scene-gallery {
    padding: 20px 16px 0;
  }

  .scene-row {
    grid-template-columns: 1fr;
  }

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

  .scene-body {
    padding: 20px 20px 18px;
  }

  .topic-channel-map {
    padding: 32px 16px 0;
  }

  .channel-map-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .related-reading {
    padding: 32px 16px 0;
  }

  .step-card {
    grid-template-columns: 44px 1fr;
    gap: 14px;
  }

  .step-number {
    width: 44px;
    height: 44px;
    font-size: 1rem;
  }

  .step-list::before {
    left: 22px;
  }

  .step-content {
    padding: 18px 18px;
  }

  .overview-table {
    padding: 32px 16px 0;
  }

  .related-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .notice-hero-figure {
    padding: 20px 16px 0;
  }

  .notice-hero-img {
    height: 200px;
  }

  .notice-cards {
    padding: 32px 16px 0;
  }

  .notice-card-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .notice-detail {
    padding: 32px 16px 0;
  }

  .notice-detail-block {
    padding: 20px 18px;
  }

  .faq-section,
  .troubleshoot-section,
  .feedback-path-section {
    padding: 24px 16px 0;
  }

  .troubleshoot-steps {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .feedback-path-content {
    grid-template-columns: 1fr;
  }

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

  .feedback-path-text {
    padding: 22px 20px;
  }

  .error-main {
    padding: 48px 16px;
  }

  .error-panel {
    padding: 40px 24px;
  }

  .error-code {
    font-size: 3rem;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

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

  .scene-card img {
    height: 160px;
  }

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

  .channel-map-grid {
    grid-template-columns: 1fr;
  }

  .channel-list-section .channel-card {
    grid-template-columns: 1fr;
  }

  .channel-media .channel-img {
    height: 180px;
    min-height: 0;
  }

  .channel-info {
    padding: 18px 18px 16px;
  }
}

/* ==========================================================================
   Motion — 滚动出现动画（仅作为增强，不影响初始可见性）
   ========================================================================== */

@media (prefers-reduced-motion: no-preference) {
  .scene-card,
  .channel-card,
  .flow-step,
  .notice-card {
    animation: fadeInUp 0.5s ease both;
  }

  .scene-card:nth-child(2),
  .channel-card:nth-child(2),
  .flow-step:nth-child(2),
  .notice-card:nth-child(2) {
    animation-delay: 0.08s;
  }

  .scene-card:nth-child(3),
  .flow-step:nth-child(3),
  .notice-card:nth-child(3) {
    animation-delay: 0.16s;
  }

  .scene-card:nth-child(4),
  .flow-step:nth-child(4) {
    animation-delay: 0.24s;
  }

  @keyframes fadeInUp {
    from {
      opacity: 0;
      transform: translateY(16px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}