/* ==========================================================================
   九九热在线视频 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* ==========================================================================
   base
   ========================================================================== */

:root {
  --color-primary: #1F3A5F;
  --color-primary-dark: #16293F;
  --color-accent: #E08A3C;
  --color-bg: #F5F6F8;
  --color-card: #FFFFFF;
  --color-border: #D8DCE3;
  --color-text: #2B2F36;
  --color-muted: #6B7280;
  --color-row-alt: #F8F9FB;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-card: 0 1px 2px rgba(31, 58, 95, 0.06);
  --shadow-card-hover: 0 6px 18px rgba(31, 58, 95, 0.12);
  --container: 1200px;
  --header-height: 64px;
}

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

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

body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--color-primary);
  font-weight: 600;
  line-height: 1.35;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

dl,
dt,
dd {
  margin: 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

figure {
  margin: 0;
}

table {
  border-collapse: collapse;
  width: 100%;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

time {
  font-variant-numeric: tabular-nums;
}

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

/* ==========================================================================
   layout
   ========================================================================== */

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--color-primary);
  border-bottom: 1px solid var(--color-primary-dark);
}

.header-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  color: #FFFFFF;
  flex-shrink: 0;
}

.brand:hover,
.brand:focus-visible {
  color: var(--color-accent);
}

.brand-mark {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-sub {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.62);
  font-weight: 400;
}

.brand:hover .brand-sub,
.brand:focus-visible .brand-sub {
  color: rgba(255, 255, 255, 0.85);
}

.site-nav {
  margin-left: auto;
}

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

.nav-link {
  display: block;
  padding: 8px 14px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.08);
}

.nav-link.is-current {
  color: #FFFFFF;
  font-weight: 600;
  background: rgba(224, 138, 60, 0.22);
  box-shadow: inset 0 -2px 0 var(--color-accent);
}

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: var(--radius-sm);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: #FFFFFF;
  border-radius: 1px;
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 56px;
}

.inner-main {
  padding-top: 20px;
}

.home-main {
  padding-top: 0;
}

.section {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

.section:first-child {
  border-top: 0;
}

.section-head {
  margin-bottom: 20px;
}

.section-head h2 {
  font-size: 22px;
}

.section-desc {
  margin-top: 8px;
  color: var(--color-muted);
  font-size: 14px;
  max-width: 880px;
}

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

.section-lead,
.section-intro {
  margin-top: 8px;
  color: var(--color-muted);
  font-size: 14px;
  max-width: 880px;
}

.section-foot {
  margin-top: 18px;
  font-size: 14px;
}

.section-foot a {
  font-weight: 500;
}

.section-note {
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  color: var(--color-muted);
  font-size: 14px;
}

.section-note a {
  margin-right: 12px;
}

/* 通用数据表 */

.table-wrap {
  width: 100%;
  overflow-x: auto;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.data-table {
  min-width: 640px;
  font-size: 14px;
}

.data-table caption {
  text-align: left;
}

.data-table thead th {
  padding: 12px 16px;
  background: #EEF1F5;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid var(--color-border);
}

.data-table tbody th,
.data-table tbody td {
  padding: 13px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--color-border);
}

.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table tbody tr:nth-child(even) {
  background: var(--color-row-alt);
}

.data-table tbody tr:hover {
  background: #FDF4EA;
}

.data-table tbody th {
  color: var(--color-primary);
  font-weight: 600;
  white-space: nowrap;
}

.table-caption {
  padding: 12px 16px 0;
  color: var(--color-muted);
  font-size: 13px;
}

/* 页脚 */

.site-footer {
  flex-shrink: 0;
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.footer-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 24px;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(0, 2.2fr);
  gap: 32px 48px;
}

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

.footer-name {
  color: #FFFFFF;
  font-size: 17px;
  font-weight: 600;
}

.footer-slogan {
  margin-top: 6px;
  color: var(--color-accent);
  font-size: 13px;
}

.footer-desc {
  margin-top: 12px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.66);
}

.footer-back {
  margin-top: 16px;
}

.footer-back a {
  color: #FFFFFF;
  font-size: 13px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
  padding-bottom: 2px;
}

.footer-back a:hover,
.footer-back a:focus-visible {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.footer-group-title {
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
}

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

.footer-list a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: var(--color-accent);
}

.footer-copy {
  grid-column: 1 / -1;
  margin-top: 8px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.5);
  font-size: 12px;
}

/* ==========================================================================
   components
   ========================================================================== */

/* 顶部信息条 */

.top-bar {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
}

.top-bar .top-bar-line,
.top-bar .top-bar-scope {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.top-bar .top-bar-line {
  padding-top: 8px;
}

.top-bar .top-bar-scope {
  padding-bottom: 8px;
  color: rgba(255, 255, 255, 0.55);
}

/* 按钮 */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-accent);
  color: #FFFFFF;
}

.btn-secondary {
  background: var(--color-accent);
  color: #FFFFFF;
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: #C9762D;
  color: #FFFFFF;
}

.btn-ghost {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-primary);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* 标签 */

.tag {
  display: inline-block;
  padding: 3px 10px;
  background: #EEF1F5;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-primary);
  font-size: 12px;
  line-height: 1.6;
  white-space: nowrap;
}

/* 状态标签 */

.status {
  display: inline-block;
  padding: 2px 9px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  line-height: 1.7;
  white-space: nowrap;
  border: 1px solid transparent;
}

.status-live {
  background: #E7F1EA;
  border-color: #B9D6C3;
  color: #2C6B44;
}

.status-sorting {
  background: #FDF1E4;
  border-color: #F0CFA6;
  color: #9A5A18;
}

.status-check {
  background: #EDF1F7;
  border-color: #C7D2E2;
  color: #38527B;
}

.status-tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  line-height: 1.7;
  white-space: nowrap;
  background: #EDF1F7;
  border: 1px solid #C7D2E2;
  color: #38527B;
}

.status-tag--ready {
  background: #E7F1EA;
  border-color: #B9D6C3;
  color: #2C6B44;
}

.status-tag--doing {
  background: #FDF1E4;
  border-color: #F0CFA6;
  color: #9A5A18;
}

.status-tag--check {
  background: #EDF1F7;
  border-color: #C7D2E2;
  color: #38527B;
}

/* 字段说明列表 */

.field-legend {
  margin-bottom: 14px;
  padding: 14px 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.legend-list {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 14px;
  font-size: 13px;
}

.legend-list dt {
  color: var(--color-primary);
  font-weight: 600;
}

.legend-list dd {
  color: var(--color-muted);
}

/* 媒体图 */

.media-figure {
  position: relative;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.media-figure figcaption {
  padding: 10px 14px;
  color: var(--color-muted);
  font-size: 13px;
  border-top: 1px solid var(--color-border);
}

.section-media {
  margin: 16px 0 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

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

/* 卡片图 */

.card-figure,
.card-media {
  margin: 0;
  background: #E9ECF1;
  overflow: hidden;
}

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

/* 专题卡（首页 / 专题片单页共用结构） */

.collection-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.collection-card {
  display: flex;
  flex-direction: column;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.18s ease, transform 0.18s ease;
}

.collection-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.collection-card .card-figure,
.collection-card .card-media {
  height: 170px;
}

.collection-card .card-body {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  padding: 16px 18px 18px;
  gap: 8px;
}

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

.card-line,
.card-thread {
  color: var(--color-muted);
  font-size: 14px;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  font-size: 13px;
  color: var(--color-muted);
}

.card-meta .meta-num {
  color: var(--color-primary);
  font-weight: 600;
}

.card-meta .meta-label {
  color: var(--color-muted);
}

.card-meta .meta-value {
  color: var(--color-primary);
  font-weight: 600;
}

.card-link,
.card-entry {
  align-self: flex-start;
  margin-top: 6px;
  padding-bottom: 2px;
  font-size: 14px;
  font-weight: 500;
  border-bottom: 1px solid currentColor;
}

/* 检查清单 */

.check-list {
  margin-top: 12px;
}

.check-item {
  position: relative;
  padding: 6px 0 6px 22px;
  color: var(--color-text);
  font-size: 14px;
}

.check-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 2px;
}

/* 面包屑 */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0 14px;
  font-size: 13px;
  color: var(--color-muted);
}

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

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

.breadcrumb-sep {
  color: #B4BAC4;
}

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

/* 内页标题区 */

.page-header {
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.page-title {
  font-size: 28px;
  font-weight: 600;
  color: var(--color-primary);
}

.page-description {
  margin-top: 10px;
  max-width: 880px;
  color: var(--color-muted);
  font-size: 14px;
}

/* 内页布局 */

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-top: 32px;
}

.page-layout.sidebar-left {
  grid-template-columns: 260px minmax(0, 1fr);
}

.page-layout.guide-layout {
  grid-template-columns: minmax(0, 1fr) 300px;
}

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

/* 侧栏通用 */

.side-panel,
.sidebar,
.layout-aside {
  min-width: 0;
  align-self: start;
}

.side-title,
.sidebar-title,
.aside-title {
  font-size: 16px;
  color: var(--color-primary);
}

.side-note,
.sidebar-note,
.aside-note {
  margin-top: 8px;
  color: var(--color-muted);
  font-size: 13px;
}

.side-more {
  margin-top: 14px;
  font-size: 13px;
}

/* 分类树 */

.channel-tree,
.sidebar nav {
  margin-top: 14px;
  padding: 14px 16px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.tree-group + .tree-group {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--color-border);
}

.tree-group-title {
  font-size: 13px;
  color: var(--color-muted);
  font-weight: 600;
  text-transform: none;
}

.tree-list {
  margin-top: 8px;
}

.tree-list li + li {
  margin-top: 4px;
}

.tree-link,
.tree-item a {
  display: block;
  padding: 7px 10px;
  color: var(--color-text);
  font-size: 14px;
  border-radius: var(--radius-sm);
  border-left: 3px solid transparent;
}

.tree-link:hover,
.tree-link:focus-visible,
.tree-item a:hover,
.tree-item a:focus-visible {
  background: #F1F4F8;
  color: var(--color-primary);
}

.tree-link.is-active {
  background: #FDF4EA;
  color: var(--color-primary);
  font-weight: 600;
  border-left-color: var(--color-accent);
}

.tree-item.is-current a {
  background: #FDF4EA;
  color: var(--color-primary);
  font-weight: 600;
  border-left-color: var(--color-accent);
}

/* 月份树（更新记录页） */

.month-tree {
  margin-top: 14px;
  padding: 14px 16px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.month-tree-item + .month-tree-item {
  margin-top: 4px;
}

.month-link {
  display: block;
  padding: 7px 10px;
  color: var(--color-text);
  font-size: 14px;
  border-radius: var(--radius-sm);
  border-left: 3px solid transparent;
}

.month-link:hover,
.month-link:focus-visible {
  background: #F1F4F8;
  color: var(--color-primary);
}

.month-link.is-current {
  background: #FDF4EA;
  color: var(--color-primary);
  font-weight: 600;
  border-left-color: var(--color-accent);
}

.aside-figure {
  margin-top: 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.aside-figure img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

.aside-figure figcaption {
  padding: 10px 14px;
  color: var(--color-muted);
  font-size: 13px;
  border-top: 1px solid var(--color-border);
}

/* 字段列表（观看指引侧栏） */

.aside-block {
  padding: 16px 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.aside-block + .aside-block {
  margin-top: 18px;
}

.field-list {
  margin-top: 12px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 14px;
  font-size: 13px;
}

.field-list dt {
  color: var(--color-primary);
  font-weight: 600;
  white-space: nowrap;
}

.field-list dd {
  color: var(--color-muted);
}

.aside-links {
  margin-top: 12px;
}

.aside-links li + li {
  margin-top: 6px;
}

.aside-links a {
  font-size: 13px;
}

/* 步骤清单（观看指引） */

.step-list {
  margin-top: 16px;
  display: grid;
  gap: 12px;
}

.step-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.step-index {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: #FFFFFF;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 600;
}

.step-body {
  min-width: 0;
}

.step-title {
  font-size: 16px;
  color: var(--color-primary);
}

.step-text {
  margin-top: 6px;
  color: var(--color-text);
  font-size: 14px;
}

.step-check {
  margin-top: 8px;
  color: var(--color-muted);
  font-size: 13px;
}

/* 状态清单（观看指引） */

.status-list {
  margin-top: 12px;
}

.status-item {
  position: relative;
  padding: 5px 0 5px 20px;
  color: var(--color-text);
  font-size: 14px;
}

.status-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 7px;
  height: 7px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* FAQ */

.faq-list {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

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

.faq-question {
  padding: 14px 18px;
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

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

.faq-question::after {
  content: "+";
  flex-shrink: 0;
  color: var(--color-accent);
  font-size: 18px;
  font-weight: 400;
  line-height: 1;
}

.faq-item[open] .faq-question {
  background: #F7F9FC;
}

.faq-item[open] .faq-question::after {
  content: "−";
}

.faq-answer {
  padding: 0 18px 16px;
  color: var(--color-text);
  font-size: 14px;
  border-top: 1px solid var(--color-border);
  padding-top: 14px;
}

/* 反馈说明网格 */

.feedback-grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feedback-col {
  padding: 16px 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.feedback-title {
  font-size: 15px;
  color: var(--color-primary);
}

.feedback-list {
  margin-top: 10px;
}

.feedback-list li {
  position: relative;
  padding: 5px 0 5px 18px;
  color: var(--color-text);
  font-size: 14px;
}

.feedback-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* 记录条目（更新记录页） */

.section-records + .section-records {
  margin-top: 8px;
}

.record-item {
  padding: 16px 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.record-item + .record-item {
  margin-top: 10px;
}

.record-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.record-date {
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.record-object {
  font-size: 16px;
  color: var(--color-primary);
}

.record-desc {
  margin-top: 8px;
  color: var(--color-text);
  font-size: 14px;
}

/* 收录范围列表 */

.scope-list {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.scope-item {
  position: relative;
  padding: 12px 16px 12px 34px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 14px;
}

.scope-item::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 20px;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-more {
  margin-top: 16px;
  font-size: 14px;
}

.section-more a {
  margin-right: 14px;
}

/* 整理节奏网格 */

.rhythm-grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.rhythm-col {
  padding: 16px 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.rhythm-title {
  font-size: 15px;
  color: var(--color-primary);
}

.rhythm-text {
  margin-top: 8px;
  color: var(--color-text);
  font-size: 14px;
}

/* 404 */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 56px;
  padding-bottom: 72px;
}

.error-panel {
  width: 100%;
  max-width: 620px;
  padding: 36px 32px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  text-align: left;
}

.error-code {
  color: var(--color-accent);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.error-panel h1 {
  margin-top: 14px;
  font-size: 24px;
}

.error-text {
  margin-top: 10px;
  color: var(--color-muted);
  font-size: 14px;
}

.error-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ==========================================================================
   pages
   ========================================================================== */

/* ---- 首页 ---- */

.home-main .hero {
  padding: 36px 0 40px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.hero-intro {
  min-width: 0;
}

.hero-title {
  font-size: 30px;
  font-weight: 600;
  color: var(--color-primary);
}

.hero-lead {
  margin-top: 14px;
  max-width: 560px;
  color: var(--color-text);
  font-size: 15px;
}

.hero-tags {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-media {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 14px;
}

.media-figure-main {
  height: 300px;
}

.media-figure-side {
  height: 300px;
}

/* 频道分类总览 */

.section-channels .table-wrap {
  margin-top: 4px;
}

/* 专题片单精选 */

.section-collections .collection-grid {
  margin-top: 4px;
}

/* 更新记录速览 */

.update-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.update-group {
  padding: 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.update-month {
  font-size: 15px;
  color: var(--color-primary);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.update-list {
  margin-top: 12px;
}

.update-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 10px;
  padding: 8px 0;
  font-size: 14px;
  border-bottom: 1px dashed var(--color-border);
}

.update-item:last-child {
  border-bottom: 0;
}

.update-date {
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.update-target {
  color: var(--color-primary);
  font-weight: 600;
}

.update-note {
  grid-column: 2 / -1;
  color: var(--color-muted);
  font-size: 13px;
}

/* 观看指引与收录边界摘要 */

.brief-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
}

.brief-col {
  min-width: 0;
}

.brief-subtitle {
  font-size: 16px;
  color: var(--color-primary);
}

.brief-guide {
  padding: 20px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.brief-scope .table-wrap {
  margin-top: 12px;
}

.brief-foot {
  margin-top: 14px;
  font-size: 14px;
}

/* 站内页面索引 */

.index-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.index-col {
  padding: 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.index-title {
  font-size: 15px;
  color: var(--color-primary);
}

.index-desc {
  margin-top: 8px;
  color: var(--color-muted);
  font-size: 13px;
}

.index-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 500;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

/* ---- 频道分类页 ---- */

.page-channels .section + .section {
  margin-top: 8px;
}

.direction-grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.direction-card {
  padding: 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.direction-title {
  font-size: 16px;
  color: var(--color-primary);
}

.direction-text {
  margin-top: 8px;
  color: var(--color-text);
  font-size: 14px;
}

.direction-list {
  margin-top: 12px;
}

.direction-list li {
  position: relative;
  padding: 5px 0 5px 18px;
  color: var(--color-muted);
  font-size: 13px;
}

.direction-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

.relation-grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.relation-block {
  padding: 18px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.relation-title {
  font-size: 16px;
  color: var(--color-primary);
}

.relation-text {
  margin-top: 8px;
  color: var(--color-text);
  font-size: 14px;
}

.relation-steps {
  margin-top: 12px;
}

/* ---- 专题片单页 ---- */

.content-section + .content-section {
  margin-top: 36px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.content-section h2 {
  font-size: 22px;
}

.content-section > p {
  margin-top: 10px;
  color: var(--color-text);
  font-size: 14px;
  max-width: 880px;
}

.thread-list {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.thread-list li {
  padding: 12px 16px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 14px;
}

.thread-list strong {
  color: var(--color-primary);
}

.page-collections .collection-grid {
  margin-top: 18px;
}

.relation-list {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.relation-list li {
  padding: 12px 16px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 14px;
}

.relation-list strong {
  color: var(--color-primary);
  margin-right: 8px;
}

/* ---- 观看指引页 ---- */

.page-guide .content-section + .content-section {
  margin-top: 36px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.verify-table {
  margin-top: 4px;
}

.feedback-section .section-note a {
  margin-right: 12px;
}

/* ---- 更新记录页 ---- */

.page-updates .section + .section {
  margin-top: 36px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.field-table {
  min-width: 560px;
  margin-top: 14px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  overflow: hidden;
}

.field-table thead th {
  padding: 12px 16px;
  background: #EEF1F5;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.field-table tbody td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--color-border);
}

.field-table tbody tr:last-child td {
  border-bottom: 0;
}

.field-table tbody tr:nth-child(even) {
  background: var(--color-row-alt);
}

/* ==========================================================================
   responsive
   ========================================================================== */

@media (max-width: 960px) {
  .header-inner {
    padding: 0 18px;
  }

  .site-main {
    padding: 0 18px 44px;
  }

  .top-bar .top-bar-line,
  .top-bar .top-bar-scope {
    padding-left: 18px;
    padding-right: 18px;
  }

  .footer-inner {
    padding: 32px 18px 20px;
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .footer-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    margin-left: 0;
    padding: 8px 18px 16px;
    background: var(--color-primary);
    border-bottom: 1px solid var(--color-primary-dark);
    box-shadow: 0 8px 20px rgba(15, 27, 44, 0.22);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

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

  .nav-link {
    padding: 12px 14px;
    font-size: 15px;
  }

  .nav-link.is-current {
    box-shadow: inset 3px 0 0 var(--color-accent);
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

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

  .hero-media {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .media-figure-main,
  .media-figure-side {
    height: 220px;
  }

  .update-groups {
    grid-template-columns: minmax(0, 1fr);
  }

  .brief-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .index-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-layout.sidebar-left,
  .page-layout.guide-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .page-layout.sidebar-left .side-panel,
  .page-layout.sidebar-left .sidebar,
  .page-layout.sidebar-left .layout-aside {
    order: -1;
  }

  .direction-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rhythm-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feedback-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .collection-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 640px) {
  body {
    font-size: 14px;
  }

  .header-inner {
    padding: 0 14px;
    gap: 12px;
  }

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

  .brand-sub {
    display: none;
  }

  .site-main {
    padding: 0 14px 36px;
  }

  .top-bar .top-bar-line,
  .top-bar .top-bar-scope {
    padding-left: 14px;
    padding-right: 14px;
  }

  .footer-inner {
    padding: 28px 14px 18px;
  }

  .footer-nav {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .section {
    padding: 30px 0;
  }

  .section-head h2,
  .section-title,
  .content-section h2 {
    font-size: 19px;
  }

  .hero {
    padding: 26px 0 30px;
  }

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

  .hero-lead {
    font-size: 14px;
  }

  .hero-actions {
    gap: 10px;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
    min-width: 140px;
  }

  .hero-media {
    grid-template-columns: minmax(0, 1fr);
  }

  .media-figure-main,
  .media-figure-side {
    height: 200px;
  }

  .collection-grid,
  .direction-grid,
  .rhythm-grid,
  .index-grid,
  .relation-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .collection-card .card-figure,
  .collection-card .card-media {
    height: 160px;
  }

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

  .page-header {
    padding-bottom: 18px;
  }

  .page-layout {
    padding-top: 22px;
    gap: 20px;
  }

  .legend-list,
  .field-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .legend-list dd,
  .field-list dd {
    margin-bottom: 6px;
  }

  .step-item {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 10px;
    padding: 14px;
  }

  .step-index {
    width: 26px;
    height: 26px;
    font-size: 13px;
  }

  .section-media img,
  .aside-figure img {
    height: 180px;
  }

  .error-panel {
    padding: 28px 20px;
  }

  .error-code {
    font-size: 32px;
  }

  .error-actions .btn {
    flex: 1 1 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}