/* =========================================================
   糖心 xingshengji.com 整站样式
   版本: 1.0
   说明: 视频内容导航与专题说明站
   ========================================================= */

/* =========================================================
   1. Base — 基础变量、重置、字体、色彩
   ========================================================= */
:root {
  --color-primary: #1f6feb;
  --color-primary-dark: #1857b8;
  --color-primary-light: #e8f0fe;
  --color-deep: #0b2239;
  --color-deep-soft: #1a3352;
  --color-bg: #f5f8fc;
  --color-white: #ffffff;
  --color-warning: #e8aa2c;
  --color-success: #21a67a;
  --color-text: #2c3e50;
  --color-text-light: #5a7184;
  --color-border: #e2e8f0;
  --color-bg-soft: #edf2f7;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --font-mono: "SF Mono", "Cascadia Mono", Consolas, "Courier New", monospace;

  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --header-height: 64px;
  --module-gap: 48px;
  --content-width: 720px;
}

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

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

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

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  color: var(--color-deep);
  line-height: 1.4;
}

h1 {
  font-size: 36px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 12px;
}

/* 数字与编号等宽 */
.step-number,
.channel-number,
.channel-date,
.step-num,
.error-code,
.check-icon {
  font-family: var(--font-mono);
  font-feature-settings: "tnum";
}

/* =========================================================
   2. Layout — 全站骨架布局
   ========================================================= */

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

.site-header {
  background: var(--color-deep);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(11, 34, 57, 0.18);
}

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

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

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

.brand-logo:hover .brand-name {
  color: #ffffff;
}

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

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

.nav-list a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-sm);
  transition: background 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

.nav-list a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
}

.nav-list a.is-current {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.16);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  align-items: center;
  gap: 6px;
  color: var(--color-white);
}

.nav-toggle-icon {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
}

.nav-toggle-icon::before {
  top: -6px;
}

.nav-toggle-icon::after {
  top: 6px;
}

.nav-toggle-text {
  font-size: 13px;
}

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

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

.inner-main {
  width: 100%;
}

/* 内页统一容器 */
.site-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* =========================================================
   3. 公告条 — announcement
   ========================================================= */
.announcement-bar {
  background: var(--color-primary);
  color: #fff;
  padding: 8px 16px;
  text-align: center;
  font-size: 14px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.announcement-bar p {
  margin: 0;
  line-height: 1.5;
}

.announcement-close {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: #fff;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.2s ease;
}

.announcement-close:hover {
  background: rgba(255, 255, 255, 0.35);
}

.announcement-close::before {
  content: "×";
  font-size: 16px;
}

/* =========================================================
   4. 面包屑 — breadcrumb
   ========================================================= */
.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px 24px 0;
  font-size: 14px;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

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

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

.breadcrumb-sep {
  color: #b0bccb;
  font-size: 12px;
}

.breadcrumb-current {
  color: var(--color-deep);
  font-weight: 600;
}

/* =========================================================
   5. 页面标题区 — page header
   ========================================================= */
.page-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 24px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-title {
  font-size: 28px;
  line-height: 1.4;
}

.page-description {
  font-size: 16px;
  color: var(--color-text-light);
  max-width: 760px;
  margin: 0;
}

/* =========================================================
   6. Components — 通用组件
   ========================================================= */

/* --- 图片与媒体 --- */
.content-media {
  margin: 24px 0;
}

.content-media-inline {
  max-width: 100%;
}

.content-media-inline img {
  width: 100%;
  height: auto;
  max-height: 360px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.content-media-inline figcaption {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 8px 4px 0;
  line-height: 1.6;
}

/* --- 通用区块标题 --- */
.section-heading {
  margin-bottom: 24px;
}

.section-heading h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.section-heading p {
  color: var(--color-text-light);
  font-size: 15px;
  margin: 0;
  max-width: 680px;
}

.section-title {
  font-size: 24px;
  margin-bottom: 16px;
}

.section-intro {
  color: var(--color-text-light);
  font-size: 15px;
  margin-bottom: 16px;
}

/* --- 文本链接 --- */
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
  font-size: 15px;
}

.text-link::after {
  content: "→";
  font-size: 14px;
  transition: transform 0.2s ease;
}

.text-link:hover::after {
  transform: translateX(3px);
}

/* --- 状态标签 --- */
.entry-status {
  display: inline-block;
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 20px;
  font-weight: 600;
  line-height: 1.6;
}

.status-ready {
  background: rgba(33, 166, 122, 0.12);
  color: var(--color-success);
}

.status-check {
  background: rgba(232, 170, 44, 0.14);
  color: #b57f10;
}

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

.faq-item summary {
  padding: 14px 18px;
  font-weight: 600;
  font-size: 15px;
  color: var(--color-deep);
  cursor: pointer;
  position: relative;
  padding-right: 40px;
  list-style: none;
  transition: background 0.2s ease;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-primary);
  font-weight: 400;
  transition: transform 0.2s ease;
}

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

.faq-item details[open] summary::after {
  content: "−";
  transform: translateY(-50%);
}

.faq-item details p {
  padding: 0 18px 16px;
  font-size: 14px;
  color: var(--color-text);
  margin: 0;
  line-height: 1.8;
}

/* --- 相关链接容带 --- */
.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px 24px 32px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
}

.related-links-label {
  color: var(--color-text-light);
  font-weight: 600;
}

.related-links-item {
  color: var(--color-primary);
  padding: 4px 0;
}

.related-links-item:hover {
  text-decoration: underline;
}

/* --- 按钮 --- */
.btn-entry {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  transition: background 0.2s ease;
}

.btn-entry:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

.btn-entry-secondary {
  display: inline-block;
  background: transparent;
  color: var(--color-primary);
  padding: 10px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid var(--color-primary);
  transition: background 0.2s ease;
}

.btn-entry-secondary:hover {
  background: var(--color-primary-light);
}

/* --- 页脚 --- */
.site-footer {
  background: var(--color-deep);
  color: #a8b8c8;
  margin-top: 64px;
}

.footer-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr 1.2fr;
  gap: 32px;
}

.footer-brand .footer-logo {
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #a8b8c8;
  margin: 0;
}

.footer-index h3,
.footer-guide h3,
.footer-boundary h3 {
  color: #ffffff;
  font-size: 16px;
  margin-bottom: 14px;
}

.footer-index ul,
.footer-guide ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-index a,
.footer-guide a {
  color: #a8b8c8;
  font-size: 14px;
}

.footer-index a:hover,
.footer-guide a:hover {
  color: #ffffff;
}

.footer-boundary p {
  font-size: 13px;
  line-height: 1.7;
  color: #7e90a3;
  margin-bottom: 8px;
}

.footer-copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 16px 24px;
  text-align: center;
}

.footer-copyright p {
  font-size: 13px;
  color: #7e90a3;
  margin: 0;
}

/* =========================================================
   7. Pages — 首页
   ========================================================= */

/* --- 媒体化焦点区 --- */
.hero-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 48px 0 40px;
}

.hero-copy h1 {
  font-size: 36px;
  margin-bottom: 16px;
  line-height: 1.3;
}

.hero-lead {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.hero-description {
  color: var(--color-text-light);
  font-size: 15px;
  margin-bottom: 24px;
  line-height: 1.8;
}

.hero-cta {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 30px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  transition: background 0.2s ease, transform 0.2s ease;
}

.hero-cta:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
}

.hero-media .hero-figure {
  margin: 0;
}

.hero-media .hero-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 24px rgba(11, 34, 57, 0.12);
}

/* --- 快捷入口 --- */
.quick-entries {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.quick-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.quick-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(11, 34, 57, 0.08);
  border-color: var(--color-primary);
}

.quick-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-deep);
}

.quick-card-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* --- 频道日程轨道 --- */
.channel-timeline {
  margin-bottom: 48px;
}

.timeline-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  position: relative;
}

.channel-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.channel-card:hover {
  box-shadow: 0 6px 16px rgba(11, 34, 57, 0.08);
  border-color: var(--color-primary);
}

.channel-date {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 600;
}

.channel-card h3 {
  font-size: 17px;
  margin: 0;
}

.channel-card p {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.6;
  flex: 1;
}

.channel-card .entry-status {
  align-self: flex-start;
  margin-top: 4px;
}

/* --- 专题片单预览 --- */
.playlist-preview {
  margin-bottom: 48px;
}

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

.playlist-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  gap: 16px;
  transition: box-shadow 0.2s ease;
}

.playlist-card:hover {
  box-shadow: 0 6px 16px rgba(11, 34, 57, 0.08);
}

.playlist-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

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

.playlist-card .card-content h3 {
  font-size: 17px;
  margin: 0;
}

.playlist-card .card-content p {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.7;
}

.playlist-card .card-content a {
  font-size: 14px;
  font-weight: 600;
  margin-top: 4px;
}

/* --- 步骤流程 --- */
.step-process {
  margin-bottom: 48px;
}

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

.step-item {
  background: var(--color-bg-soft);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.step-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.step-item h3 {
  font-size: 16px;
  margin: 0;
}

.step-item p {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.7;
}

.step-guide-link {
  margin-top: 24px;
  text-align: right;
}

.step-guide-link a {
  font-weight: 600;
  font-size: 15px;
}

/* --- 页脚前双入口 --- */
.pre-footer-entries {
  margin-bottom: 48px;
}

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

.entry-link {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.entry-link:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(11, 34, 57, 0.06);
}

.entry-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-deep);
}

.entry-desc {
  font-size: 14px;
  color: var(--color-text-light);
}

/* =========================================================
   8. Pages — 内页频道导航 channels
   ========================================================= */

.page-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.content-with-aside {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: start;
}

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

.content-aside {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

.content-aside h2 {
  font-size: 18px;
  margin-bottom: 8px;
}

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

.aside-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.aside-link-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 12px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  transition: background 0.2s ease;
}

.aside-link-item:hover {
  background: var(--color-primary-light);
}

.aside-link-name {
  font-weight: 600;
  font-size: 15px;
  color: var(--color-deep);
}

.aside-link-desc {
  font-size: 13px;
  color: var(--color-text-light);
}

.aside-note {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  font-size: 13px;
  color: var(--color-text-light);
}

.aside-note p {
  margin-bottom: 8px;
}

.aside-note a {
  font-weight: 600;
  font-size: 14px;
}

/* 频道列表 */
.channel-index-section,
.genre-explanation-section,
.channel-tips-section {
  margin-bottom: 32px;
}

.channel-index-section h2,
.genre-explanation-section h2,
.channel-tips-section h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.channel-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.channel-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  transition: box-shadow 0.2s ease;
}

.channel-item:hover {
  box-shadow: 0 4px 12px rgba(11, 34, 57, 0.06);
}

.channel-number {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.4;
  flex-shrink: 0;
  min-width: 36px;
}

.channel-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.channel-info h3 {
  font-size: 17px;
  margin: 0;
}

.channel-scope {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.6;
}

.channel-tags {
  font-size: 13px;
  color: var(--color-text-light);
  margin: 0;
}

.channel-tags strong {
  color: var(--color-deep);
}

/* 题材说明 */
.genre-note {
  background: var(--color-primary-light);
  border-left: 3px solid var(--color-primary);
  padding: 12px 16px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 16px;
}

.genre-note p {
  margin: 0;
  font-size: 14px;
}

/* 选择建议 */
.tips-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tip-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 14px;
  line-height: 1.7;
}

.tips-outro {
  font-size: 14px;
  color: var(--color-text-light);
  margin-top: 16px;
}

.tips-outro a {
  margin-right: 16px;
  font-weight: 600;
}

/* =========================================================
   9. Pages — 专题片单 playlists
   ========================================================= */

.how-playlists-made,
.playlist-cards,
.playlist-view-entry,
.related-faq {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 40px;
}

.how-playlists-made {
  padding-top: 32px;
}

.how-playlists-made h2,
.playlist-cards h2,
.playlist-view-entry h2,
.related-faq h2 {
  font-size: 22px;
  margin-bottom: 16px;
}

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

.make-step {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
}

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

.make-step p {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
}

/* 片单卡片 */
.playlist-cards {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.playlist-cards > h2 {
  margin-bottom: 0;
}

.playlist-cards .playlist-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-white);
}

.playlist-cards .playlist-card:nth-child(even) .playlist-media {
  order: 2;
}

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

.playlist-info {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}

.playlist-info h3 {
  font-size: 20px;
  margin: 0;
}

.playlist-tag {
  font-size: 13px;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 2px 10px;
  border-radius: 20px;
  display: inline-block;
  font-weight: 600;
}

.playlist-info p {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.7;
}

.playlist-composition {
  font-size: 13px;
  color: var(--color-text-light);
  background: var(--color-bg);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  line-height: 1.7;
}

.playlist-info .text-link {
  margin-top: 8px;
}

/* 查看入口 */
.playlist-view-entry {
  padding-top: 8px;
}

.playlist-view-entry .entry-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 16px;
}

/* 关联疑问 */
.related-faq {
  padding-top: 8px;
}

/* =========================================================
   10. Pages — 观看指南 guide
   ========================================================= */

.layout-shell {
  width: 100%;
}

.guide-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 40px;
  align-items: start;
}

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

.guide-layout .breadcrumb {
  padding: 16px 0 0;
  max-width: none;
}

.guide-layout .page-header {
  padding: 24px 0 0;
  max-width: none;
}

.side-aside {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

.aside-title {
  font-size: 18px;
  margin-bottom: 12px;
}

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

.aside-anchor-list a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background 0.2s ease, color 0.2s ease;
}

.aside-anchor-list a:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.content-section {
  margin-bottom: 32px;
}

.step-section .step-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.step-section .step-number {
  font-size: 32px;
  line-height: 1;
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
  min-width: 44px;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  padding: 8px 0;
  text-align: center;
}

.step-content {
  flex: 1;
  min-width: 0;
}

.step-content h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.step-content p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 8px;
  line-height: 1.7;
}

.step-tip {
  font-size: 13px;
  color: var(--color-text-light);
  background: var(--color-bg);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  margin: 0;
  border-left: 3px solid var(--color-warning);
}

/* 检查窄带 */
.check-block {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 32px 0;
}

.check-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  line-height: 1.7;
}

.check-icon {
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
}

.check-icon::before {
  content: "✓";
}

/* 边界说明 */
.boundary-note {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px;
  background: rgba(232, 170, 44, 0.08);
  border-left: 3px solid var(--color-warning);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.boundary-note p {
  margin: 0;
  font-size: 14px;
  color: var(--color-deep);
  line-height: 1.7;
}

.boundary-note strong {
  color: var(--color-deep);
}

/* =========================================================
   11. Pages — 糖心词库 terminology
   ========================================================= */

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

.sidebar-right {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: start;
}

.content-sidebar {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-height) + 20px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.sidebar-note {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.quick-term-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quick-term-item {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 8px;
}

.quick-term-item a {
  font-weight: 600;
  font-size: 15px;
  display: block;
  margin-bottom: 2px;
}

.quick-term-item p {
  font-size: 13px;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.6;
}

.sidebar-image-card {
  padding: 0;
  overflow: hidden;
  border: none;
}

.sidebar-figure {
  margin: 0;
}

.sidebar-figure img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.sidebar-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* 术语分组 */
.term-groups-section {
  min-width: 0;
}

.term-group {
  margin-bottom: 28px;
}

.term-group-title {
  font-size: 18px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary);
  margin-bottom: 16px;
  display: inline-block;
}

.term-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.term-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.term-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.term-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-deep);
}

.term-brief {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 6px;
}

.term-definition {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.term-example {
  font-size: 13px;
  color: var(--color-text-light);
  background: var(--color-bg);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  margin-top: 8px;
  line-height: 1.6;
}

.term-example::before {
  content: "示例：";
  font-weight: 600;
  color: var(--color-primary);
}

.term-anchor {
  font-size: 13px;
}

/* 相关入口 */
.related-links-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 8px 24px 40px;
}

.related-link-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 20px;
}

.related-link-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 0.2s ease;
}

.related-link-card:hover {
  border-color: var(--color-primary);
}

.related-card-title {
  font-size: 17px;
  margin: 0;
}

.related-card-text {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.6;
}

.related-card-link {
  font-weight: 600;
  font-size: 14px;
  margin-top: 8px;
}

/* =========================================================
   12. Pages — 常见疑问 faq
   ========================================================= */

.faq-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.faq-content-wrap {
  display: contents;
}

.faq-catalog {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

.faq-catalog h2 {
  font-size: 18px;
  margin-bottom: 12px;
}

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

.faq-catalog a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background 0.2s ease;
}

.faq-catalog a:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.catalog-note {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  font-size: 13px;
  color: var(--color-text-light);
}

.catalog-note p {
  margin: 0;
  line-height: 1.6;
}

.catalog-note a {
  font-size: 13px;
  display: inline;
  padding: 0;
}

.faq-list-wrap {
  min-width: 0;
}

.faq-section {
  margin-bottom: 40px;
  scroll-margin-top: calc(var(--header-height) + 20px);
}

.faq-section h2 {
  font-size: 22px;
  margin-bottom: 8px;
}

.faq-section .section-intro {
  margin-bottom: 16px;
}

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

.boundary-tip {
  background: rgba(232, 170, 44, 0.08);
  border-left: 3px solid var(--color-warning);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 16px 20px;
  margin: 24px 0;
}

.boundary-tip p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-deep);
}

.boundary-tip strong {
  color: var(--color-deep);
}

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

.scope-block,
.process-block,
.boundary-block {
  margin-bottom: 40px;
}

.scope-table {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 20px;
  margin-bottom: 20px;
}

.scope-col {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.scope-col h3 {
  font-size: 17px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border);
}

.scope-accept h3 {
  color: var(--color-success);
  border-bottom-color: rgba(33, 166, 122, 0.3);
}

.scope-reject h3 {
  color: #c05621;
  border-bottom-color: rgba(232, 170, 44, 0.3);
}

.scope-col ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.scope-col li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  padding-left: 20px;
  position: relative;
}

.scope-col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.scope-accept li::before {
  background: var(--color-success);
}

.scope-reject li::before {
  background: var(--color-warning);
}

/* 处理流程 */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.process-step {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.step-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

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

.process-step .step-content p {
  font-size: 13px;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.6;
}

/* 停用与边界 */
.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}

.boundary-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.boundary-item h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.boundary-item p {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.6;
}

/* 反馈页相关指引 */
.feedback-related {
  font-size: 14px;
}

.feedback-related a {
  margin-right: 16px;
  font-weight: 600;
}

/* =========================================================
   14. Pages — 404
   ========================================================= */

.error-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 60px 24px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  align-items: center;
}

.error-panel {
  text-align: center;
  padding: 40px 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 560px;
  width: 100%;
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.error-panel h1 {
  font-size: 24px;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.error-home-link {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: background 0.2s ease;
}

.error-home-link:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

.error-suggest {
  max-width: 560px;
  width: 100%;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.error-suggest h2 {
  font-size: 18px;
  margin-bottom: 8px;
}

.error-suggest p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

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

.error-links a {
  display: inline-block;
  padding: 6px 0;
  font-size: 15px;
  font-weight: 600;
}

/* =========================================================
   15. Responsive — 响应式
   ========================================================= */

/* 平板: 992px */
@media (max-width: 992px) {
  .footer-container {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .content-with-aside {
    grid-template-columns: 1fr;
  }

  .content-aside {
    position: static;
  }

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

  .side-aside {
    position: static;
  }

  .sidebar-right {
    grid-template-columns: 1fr;
  }

  .content-sidebar {
    position: static;
  }

  .faq-layout {
    grid-template-columns: 1fr;
  }

  .faq-catalog {
    position: static;
  }

  .faq-content-wrap {
    display: flex;
    flex-direction: column;
  }

  .faq-catalog {
    order: 2;
  }

  .faq-list-wrap {
    order: 1;
  }

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

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

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

/* 手机: 768px */
@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
    height: 56px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--color-deep);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    gap: 0;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
  }

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

  .nav-list a {
    padding: 12px 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 0;
  }

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

  .site-main {
    padding: 0;
  }

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

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

  .breadcrumb {
    padding: 12px 16px 0;
    font-size: 13px;
  }

  .page-header {
    padding: 16px 16px 0;
  }

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

  .page-description {
    font-size: 14px;
  }

  .hero-section {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px 0;
  }

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

  .hero-media {
    order: -1;
  }

  .hero-media .hero-figure img {
    aspect-ratio: 16 / 10;
    max-height: 240px;
  }

  .quick-entries {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 32px;
  }

  .quick-card {
    padding: 18px;
  }

  .timeline-track {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

  .playlist-card img {
    height: 180px;
  }

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

  .step-process {
    margin-bottom: 32px;
  }

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

  .pre-footer-entries {
    margin-bottom: 32px;
  }

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

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

  .page-layout {
    padding: 24px 16px;
  }

  .content-with-aside {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .channel-item {
    flex-direction: column;
    gap: 8px;
    padding: 16px;
  }

  .channel-number {
    font-size: 16px;
  }

  .make-steps {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .how-playlists-made,
  .playlist-cards,
  .playlist-view-entry,
  .related-faq {
    padding: 0 16px 32px;
  }

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

  .playlist-cards .playlist-card:nth-child(even) .playlist-media {
    order: 0;
  }

  .playlist-media img {
    min-height: 0;
    height: 200px;
  }

  .playlist-info {
    padding: 16px;
  }

  .guide-layout {
    padding: 0 16px;
  }

  .step-section .step-item {
    flex-direction: column;
    gap: 12px;
    padding: 16px;
  }

  .step-section .step-number {
    font-size: 24px;
    min-width: 36px;
    padding: 4px 0;
  }

  .check-block {
    padding: 16px;
  }

  .boundary-note {
    padding: 16px;
    margin: 0 16px;
  }

  .sidebar-right {
    gap: 20px;
  }

  .related-link-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .related-links-section {
    padding: 8px 16px 32px;
  }

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

  .process-steps {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .error-main {
    padding: 32px 16px;
  }

  .error-code {
    font-size: 48px;
  }

  .related-links {
    padding: 12px 16px 24px;
  }

  .faq-layout {
    padding: 24px 16px;
    gap: 20px;
  }
}

/* 小手机: 390px 以下 */
@media (max-width: 390px) {
  .brand-name {
    font-size: 18px;
  }

  .hero-copy h1 {
    font-size: 22px;
  }

  .hero-cta {
    padding: 8px 20px;
    font-size: 14px;
  }

  .quick-card {
    padding: 14px;
  }

  .channel-card {
    padding: 16px;
  }

  .playlist-info {
    padding: 14px;
  }

  .footer-container {
    padding: 24px 16px 20px;
  }

  .btn-entry,
  .btn-entry-secondary {
    padding: 8px 20px;
    font-size: 14px;
  }
}