/* ============================================================
   糖心app · 全站样式表
   版本：1.0
   说明：覆盖首页、内页、导航、列表、卡片、表格、FAQ、页脚
   ============================================================ */

/* ============================================================
   Base —— 变量、重置、字体、基础元素
   ============================================================ */
:root {
  --color-bg: #ffffff;
  --color-text: #1a202c;
  --color-text-secondary: #718096;
  --color-accent: #e11d48;
  --color-accent-hover: #be123c;
  --color-bg-soft: #f7fafc;
  --color-border: #e2e8f0;
  --color-border-light: #edf2f7;

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

  --container-width: 1200px;
  --container-padding: 0 24px;

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

  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;

  --shadow-sm: 0 1px 2px rgba(26, 32, 44, 0.06);
  --shadow-md: 0 4px 12px rgba(26, 32, 44, 0.08);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 20px;
}

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

strong {
  font-weight: 700;
}

/* ============================================================
   Layout —— 全站容器、页头、页脚、面包屑
   ============================================================ */

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

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}

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

/* 主导航 */
.site-nav {
  display: flex;
  align-items: center;
}

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

.nav-list li {
  position: relative;
}

.nav-list a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

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

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

.nav-list a.is-current::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 1px;
}

/* 通知中心按钮 */
.notification-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  white-space: nowrap;
  flex-shrink: 0;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.notification-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.notification-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  font-size: 16px;
  line-height: 1;
}

/* 汉堡按钮（默认隐藏） */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.nav-toggle-icon {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  position: relative;
  border-radius: 1px;
  transition: background-color var(--transition-fast);
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition-fast);
}

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

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

/* 主内容区 */
.site-main {
  min-height: 480px;
}

.home-main {
  background-color: var(--color-bg);
}

.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 64px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.breadcrumb-sep {
  color: var(--color-border);
  user-select: none;
}

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

/* 页面标题区 */
.page-header {
  margin-bottom: 40px;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 760px;
}

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

.footer-top {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 360px;
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-feedback-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.footer-feedback-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.footer-feedback-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  padding: 8px 16px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.footer-feedback-link:hover {
  background-color: var(--color-accent);
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid var(--color-border-light);
}

.footer-bottom p {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px 24px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

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

/* 区块标题 */
.section-heading {
  margin-bottom: 32px;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.section-lead,
.section-desc,
.section-intro {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 720px;
}

/* 通用区块 */
.section-block {
  padding: 64px 24px;
}

/* 步骤条（首页横向） */
.steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step-item {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.step-item:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 16px;
}

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

.step-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.step-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  transition: color var(--transition-fast);
}

.step-link:hover {
  color: var(--color-accent-hover);
}

/* 时间线列表（首页） */
.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border-light);
}

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

.timeline-date {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding-top: 2px;
}

.timeline-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.timeline-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.timeline-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
}

/* 图文容器 */
figure {
  margin: 0;
}

figcaption {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-top: 8px;
  text-align: center;
}

.content-media {
  margin: 24px 0;
}

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

/* 相关链接 */
.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 64px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-right: 8px;
}

.related-links-item {
  display: inline-block;
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 6px 14px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

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

/* ============================================================
   Pages —— 首页
   ============================================================ */

/* 首屏焦点区 */
.hero-section {
  background-color: var(--color-bg);
  padding: 48px 24px 24px;
}

.hero-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 48px;
  align-items: center;
}

.hero-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-bg-soft);
}

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

.hero-entries {
  padding: 8px 0;
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 12px;
}

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

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

.hero-entry-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.hero-entry-link:hover {
  border-color: var(--color-accent);
  background-color: #fff5f7;
  color: var(--color-accent);
}

.hero-entry-link::after {
  content: "→";
  font-size: 16px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-left: 12px;
}

.content-media-primary {
  max-width: var(--container-width);
  margin: 24px auto 0;
}

.content-media-primary img {
  max-height: 200px;
  object-fit: cover;
}

/* 频道分类总览 */
.channel-overview {
  background-color: var(--color-bg-soft);
}

.channel-overview .section-heading {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
}

.channel-grid {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.channel-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.channel-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: #fff5f7;
  border-radius: var(--radius-md);
  font-size: 20px;
  margin-bottom: 16px;
}

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

.card-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  flex-grow: 1;
}

.card-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  margin-top: auto;
}

.card-link:hover {
  color: var(--color-accent-hover);
}

/* 观看指引摘要 */
.guide-steps {
  background-color: var(--color-bg);
}

.guide-steps .section-heading {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
}

.guide-steps .steps-row {
  max-width: var(--container-width);
  margin: 0 auto;
}

/* 最新更新动态 */
.updates-list {
  background-color: var(--color-bg-soft);
}

.updates-list .section-heading {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
}

.updates-list .timeline-list {
  max-width: var(--container-width);
  margin: 0 auto;
}

/* 帮助与反馈入口 */
.help-entry {
  background-color: var(--color-bg);
}

.help-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

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

.help-categories .section-lead {
  margin-bottom: 24px;
}

.category-icon-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.category-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.category-link:hover {
  border-color: var(--color-accent);
  background-color: #fff5f7;
  color: var(--color-accent);
}

.feedback-flow {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.flow-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 20px;
}

.flow-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
  counter-reset: flow-counter;
}

.flow-steps li {
  position: relative;
  padding-left: 40px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  counter-increment: flow-counter;
}

.flow-steps li::before {
  content: counter(flow-counter);
  position: absolute;
  left: 0;
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 13px;
  font-weight: 700;
  border-radius: 50%;
}

.flow-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  padding: 8px 16px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.flow-link:hover {
  background-color: var(--color-accent);
  color: #ffffff;
}

/* ============================================================
   Pages —— 站点概览
   ============================================================ */

.intro-section {
  margin-bottom: 56px;
}

.intro-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.intro-text h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
}

.intro-text p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.intro-text p:last-child {
  margin-bottom: 0;
}

.intro-figure {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 16px;
}

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

/* 内容范围 */
.content-scope {
  margin-bottom: 56px;
}

.scope-header {
  margin-bottom: 28px;
}

.scope-header h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.scope-header p {
  font-size: 15px;
  color: var(--color-text-secondary);
  max-width: 720px;
}

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

.scope-item {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.scope-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.scope-item-header h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
}

.scope-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-accent);
  background-color: #fff5f7;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.scope-item p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  flex-grow: 1;
}

.scope-item a {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  margin-top: auto;
}

/* 网站使用导航 */
.site-navigation {
  margin-bottom: 24px;
}

.nav-intro {
  margin-bottom: 28px;
}

.nav-intro h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.nav-intro p {
  font-size: 15px;
  color: var(--color-text-secondary);
  max-width: 720px;
}

.nav-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.nav-step-item {
  display: flex;
  gap: 16px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.nav-step-item .step-number {
  flex-shrink: 0;
  margin-bottom: 0;
}

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

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

.nav-bottom-link {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.nav-bottom-link a {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  padding: 8px 20px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-bottom-link a:hover {
  background-color: var(--color-accent);
  color: #ffffff;
}

/* ============================================================
   Pages —— 频道布局
   ============================================================ */

.partition-diagram {
  margin-bottom: 56px;
}

.partition-diagram .section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.partition-diagram .section-desc {
  margin-bottom: 20px;
}

.partition-figure {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 16px;
}

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

/* 频道列表 */
.channel-list {
  margin-bottom: 56px;
}

.channel-list .section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.channel-list .section-desc {
  margin-bottom: 28px;
}

.channel-list .channel-grid {
  max-width: none;
}

.channel-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.channel-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: #fff5f7;
  border-radius: var(--radius-md);
  font-size: 18px;
  flex-shrink: 0;
}

.channel-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
}

.channel-position {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.channel-audience {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.channel-audience strong {
  color: var(--color-text);
  font-weight: 600;
  margin-right: 4px;
}

.channel-list .channel-card a {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  margin-top: auto;
}

/* 选择建议 */
.suggestion {
  margin-bottom: 24px;
}

.suggestion .section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

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

.suggestion-table-wrapper {
  overflow-x: auto;
  margin-bottom: 16px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
}

.suggestion-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 480px;
}

.suggestion-table th,
.suggestion-table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

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

.suggestion-table td {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

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

.suggestion-note {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.suggestion-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.suggestion-links a {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  padding: 8px 20px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.suggestion-links a:hover {
  background-color: var(--color-accent);
  color: #ffffff;
}

/* ============================================================
   Pages —— 使用指引
   ============================================================ */

.guide-steps-section {
  margin-bottom: 56px;
}

.guide-steps-section .section-title,
.guide-faq-section .section-title,
.guide-comparison-section .section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.guide-steps-section .section-intro,
.guide-faq-section .section-intro,
.guide-comparison-section .section-intro {
  margin-bottom: 28px;
}

.guide-steps-section .step-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  margin-bottom: 20px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.guide-steps-section .step-item:last-child {
  margin-bottom: 0;
}

.guide-steps-section .step-number {
  width: 40px;
  height: 40px;
  font-size: 16px;
  margin-bottom: 0;
}

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

.step-content p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.step-figure {
  margin-top: 12px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 12px;
}

.step-figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.step-figure figcaption {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 6px;
}

/* FAQ */
.guide-faq-section {
  margin-bottom: 56px;
}

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

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

.faq-item {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 40px;
  transition: color var(--transition-fast);
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  font-weight: 400;
  color: var(--color-text-secondary);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.faq-item[open] summary::after {
  content: "−";
  color: var(--color-accent);
}

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

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

/* 对比建议表 */
.guide-comparison-section {
  margin-bottom: 40px;
}

.comparison-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 480px;
}

.comparison-table th,
.comparison-table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

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

.comparison-table td {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

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

/* 内页相关链接 */
.inner-page-links {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border-light);
}

.inner-page-links p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.inner-page-links a {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  padding: 6px 14px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  margin-right: 8px;
  margin-bottom: 8px;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

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

/* ============================================================
   Pages —— 更新动态
   ============================================================ */

.inner-content {
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.timeline-section .section-title,
.current-version-section .section-title,
.known-issues-section .section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.timeline-section .section-intro,
.current-version-section .section-intro,
.known-issues-section .section-intro {
  margin-bottom: 24px;
}

.content-media-inline img {
  max-height: 260px;
  object-fit: cover;
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border-light);
}

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

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

.timeline-version {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  background-color: #fff5f7;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  align-self: flex-start;
}

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

.timeline-content h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* 当前版本 */
.current-version-card {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.current-version-card .section-title {
  margin-bottom: 8px;
}

.current-version-card .section-intro {
  margin-bottom: 24px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.feature-item {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: left;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: #fff5f7;
  border-radius: var(--radius-sm);
  font-size: 16px;
  margin-bottom: 10px;
}

.feature-item h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.feature-item p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.text-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  transition: color var(--transition-fast);
}

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

/* 已知问题 */
.known-issues-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.known-issue-item {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

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

.issue-status {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.status-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  background-color: #fff5f7;
  color: var(--color-accent);
}

.known-issue-item > p:last-of-type {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.issues-note {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 16px;
  margin-bottom: 8px;
}

/* ============================================================
   Pages —— 帮助与反馈
   ============================================================ */

.category-grid {
  margin-bottom: 56px;
}

.category-grid .section-title,
.self-help-steps .section-title,
.faq-accordion .section-title,
.feedback-flow .section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.category-grid .section-intro,
.self-help-steps .section-intro,
.faq-accordion .section-intro,
.feedback-flow .section-intro {
  margin-bottom: 28px;
}

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

.category-card {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.category-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
}

.category-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: #fff5f7;
  border-radius: var(--radius-md);
  font-size: 20px;
  margin-bottom: 16px;
}

.category-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.category-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  flex-grow: 1;
}

.category-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  margin-top: auto;
}

/* 自助排查 */
.self-help-steps {
  margin-bottom: 56px;
}

.self-help-steps .steps-row {
  grid-template-columns: repeat(3, 1fr);
}

/* FAQ 手风琴 */
.faq-accordion {
  margin-bottom: 56px;
}

/* 反馈流程 */
.feedback-flow {
  margin-bottom: 56px;
}

.feedback-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.feedback-step {
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
}

.feedback-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 14px;
}

.feedback-step-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.feedback-step-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* 帮助页配图 */
.help-media {
  margin-bottom: 56px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 16px;
}

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

/* 相关推荐 */
.related-links .section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 24px;
}

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

.related-card {
  display: block;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-base);
}

.related-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.related-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  transition: color var(--transition-fast);
}

.related-card:hover .related-card-title {
  color: var(--color-accent);
}

.related-card-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* ============================================================
   Pages —— 404
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px 24px;
}

.error-content {
  text-align: center;
  max-width: 480px;
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
}

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

.error-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

.error-btn {
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
  color: #ffffff;
  background-color: var(--color-accent);
  padding: 12px 28px;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.error-btn:hover {
  background-color: var(--color-accent-hover);
  color: #ffffff;
}

/* ============================================================
   Responsive —— 响应式
   ============================================================ */

/* 平板（≤1024px） */
@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: 1fr 360px;
    gap: 32px;
  }

  .hero-media img {
    height: 360px;
  }

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

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

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

  .footer-top {
    gap: 32px;
  }
}

/* 手机（≤768px） */
@media (max-width: 768px) {
  .header-inner {
    height: 56px;
    padding: 0 16px;
    gap: 12px;
  }

  .brand-link {
    font-size: 19px;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    order: 3;
  }

  .site-nav {
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-md);
    padding: 0 16px;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    z-index: 99;
  }

  .site-nav.is-open {
    max-height: 400px;
    overflow-y: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: 8px 0 16px;
    gap: 0;
  }

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

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

  .nav-list a {
    display: block;
    padding: 14px 8px;
    font-size: 15px;
    border-radius: 0;
  }

  .nav-list a.is-current::after {
    display: none;
  }

  .notification-btn {
    padding: 6px 12px;
    font-size: 13px;
  }

  .notification-icon {
    width: 16px;
    height: 16px;
    font-size: 14px;
  }

  /* 首页 */
  .hero-section {
    padding: 32px 16px 16px;
  }

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

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

  .hero-entries {
    order: -1;
  }

  .hero-title {
    font-size: 26px;
  }

  .content-media-primary img {
    max-height: 160px;
  }

  .section-block {
    padding: 48px 16px;
  }

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

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

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 16px 0;
  }

  .help-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .category-icon-list {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .related-links {
    padding: 24px 16px 48px;
  }

  /* 内页通用 */
  .inner-main {
    padding: 24px 16px 48px;
  }

  .page-title {
    font-size: 26px;
  }

  .breadcrumb {
    margin-bottom: 16px;
    font-size: 13px;
  }

  /* 概览 */
  .intro-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .intro-text p {
    font-size: 14px;
  }

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

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

  /* 频道布局 */
  .channel-list .channel-grid {
    grid-template-columns: 1fr;
  }

  .suggestion-table {
    min-width: 360px;
  }

  /* 指引 */
  .guide-steps-section .step-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 20px;
  }

  .guide-steps-section .step-number {
    margin-bottom: 0;
  }

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

  .comparison-table {
    min-width: 360px;
  }

  /* 更新动态 */
  .inner-content {
    gap: 40px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .timeline-marker {
    flex-direction: row;
    align-items: center;
    gap: 12px;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .current-version-card {
    padding: 24px;
  }

  /* 帮助 */
  .category-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .self-help-steps .steps-row {
    grid-template-columns: 1fr;
  }

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

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

  /* 页脚 */
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 16px 24px;
  }

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

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

/* 小屏手机（≤390px） */
@media (max-width: 390px) {
  .header-inner {
    padding: 0 12px;
  }

  .notification-btn {
    padding: 6px 10px;
    font-size: 12px;
  }

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

  .hero-entry-link {
    padding: 12px 16px;
    font-size: 14px;
  }

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

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

  .suggestion-table {
    min-width: 320px;
  }

  .comparison-table {
    min-width: 320px;
  }
}