/* ==========================================================================
   YY影院在线观看 · 全站样式表
   艺术展览风：中性底色、全幅展示、极简导航、策展式文字
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* ==========================================================================
   base · 变量与基础重置
   ========================================================================== */

:root {
  --bg: #F5F3EF;
  --ink: #1C1B19;
  --ink-soft: #6B6862;
  --accent: #B08D57;
  --surface: #E8E4DD;
  --line: #DCD7CE;
  --white: #FFFFFF;
  --radius: 6px;
  --radius-sm: 4px;
  --shell: 1200px;
  --gap: 28px;
  --font-sans: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}

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

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

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

p {
  margin: 0;
}

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

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

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

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

figure {
  margin: 0;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
}

/* --- 页头 --- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: rgba(245, 243, 239, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 14px 24px;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand-mark {
  display: block;
  width: 40px;
  height: 40px;
  border: 1px solid var(--ink);
  border-radius: var(--radius-sm);
  background-color: var(--ink);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 12px 14px;
  border-left: 2px solid var(--bg);
  border-right: 2px solid var(--bg);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-name {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand-slogan {
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.08em;
}

/* --- 主导航 --- */

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--white);
  letter-spacing: 0.06em;
}

.nav-toggle-icon {
  display: block;
  width: 16px;
  height: 2px;
  background-color: var(--ink);
  position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background-color: var(--ink);
}

.nav-toggle-icon::before {
  top: -5px;
}

.nav-toggle-icon::after {
  top: 5px;
}

.nav-toggle-text {
  font-size: 14px;
}

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

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

.nav-list li {
  flex: 0 0 auto;
}

.nav-list a {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  letter-spacing: 0.06em;
  border-bottom: 2px solid transparent;
}

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

.nav-list a.is-current {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* --- 主内容 --- */

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

.inner-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 32px 24px 72px;
}

/* --- 面包屑 --- */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 14px;
  color: var(--ink-soft);
}

.breadcrumb a {
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
}

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

.breadcrumb-sep {
  color: var(--line);
}

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

/* --- 页面标题区 --- */

.page-header {
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}

.page-description {
  max-width: 760px;
  font-size: 16px;
  color: var(--ink-soft);
}

/* --- 页脚 --- */

.site-footer {
  background-color: var(--ink);
  color: var(--surface);
  font-family: var(--font-sans);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 40px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 24px 40px;
}

.footer-brand {
  max-width: 420px;
}

.footer-name {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--bg);
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: #B9B4AB;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--bg);
  margin-bottom: 16px;
}

.footer-list li {
  margin-bottom: 10px;
}

.footer-list a {
  font-size: 14px;
  color: #B9B4AB;
  border-bottom: 1px solid transparent;
}

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

.footer-bottom {
  border-top: 1px solid #33312D;
}

.footer-copy {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 20px 24px;
  font-size: 13px;
  color: #8C877E;
}

/* ==========================================================================
   layout · 内页侧栏布局
   ========================================================================== */

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 48px;
  align-items: start;
}

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

.page-content,
.channel-content,
.layout-content {
  min-width: 0;
}

/* --- 侧栏通用 --- */

.page-sidebar,
.channel-sidebar,
.feature-sidebar,
.updates-sidebar {
  min-width: 0;
  padding: 24px 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.sidebar-title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--ink);
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.sidebar-subtitle {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  margin: 24px 0 12px;
}

.sidebar-tree,
.sidebar-list,
.tree-list,
.sidebar-tags {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-tree-item a,
.sidebar-node a,
.sidebar-list a,
.tree-item a {
  display: block;
  padding: 9px 10px;
  font-size: 14px;
  color: var(--ink-soft);
  border-left: 2px solid transparent;
  border-radius: var(--radius-sm);
}

.sidebar-tree-item a:hover,
.sidebar-node a:hover,
.sidebar-list a:hover,
.tree-item a:hover {
  color: var(--ink);
  background-color: var(--surface);
  border-left-color: var(--accent);
}

.sidebar-list-muted a {
  font-size: 13px;
  color: #8C877E;
}

.sidebar-tags {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 8px;
}

.sidebar-tag a {
  display: inline-block;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--ink-soft);
  background-color: var(--surface);
  border-radius: 999px;
}

.sidebar-tag a:hover {
  color: var(--white);
  background-color: var(--accent);
}

.sidebar-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.sidebar-note a {
  color: var(--accent);
  border-bottom: 1px solid currentColor;
}

/* ==========================================================================
   components · 通用模块
   ========================================================================== */

/* --- 区块标题 --- */

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

.section-title {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 10px;
}

.section-desc,
.section-intro {
  max-width: 720px;
  font-size: 15px;
  color: var(--ink-soft);
}

.section-more {
  margin-top: 28px;
}

.link-more {
  display: inline-block;
  padding-bottom: 4px;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--ink);
  border-bottom: 1px solid var(--accent);
}

.link-more::after {
  content: " →";
  color: var(--accent);
}

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

/* --- 图片容器 --- */

.channel-media,
.feature-media,
.update-media,
.hero-figure,
.guide-figure {
  overflow: hidden;
  border-radius: var(--radius);
  background-color: var(--surface);
}

.channel-media img,
.feature-media img,
.update-media img,
.hero-figure img,
.guide-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================================================
   pages · 首页
   ========================================================================== */

.home-main {
  display: block;
}

/* --- 作品档案首屏 --- */

.hero-archive {
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr) 360px;
  gap: 48px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 64px 24px 56px;
}

.hero-subtitle {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

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

.year-list li a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

.year-list li a:hover {
  color: var(--accent);
}

.year-num {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.year-note {
  font-size: 13px;
  color: var(--ink-soft);
}

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

.hero-title {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}

.hero-lead {
  max-width: 560px;
  font-size: 16px;
  color: var(--ink-soft);
  margin-bottom: 24px;
}

.theme-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.theme-tags li a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ink);
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.theme-tags li a:hover {
  color: var(--white);
  background-color: var(--accent);
  border-color: var(--accent);
}

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

.hero-figure {
  aspect-ratio: 16 / 10;
}

.hero-figure figcaption {
  padding: 12px 4px 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.hero-featured-note {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* --- 频道方向总览 --- */

.channels-overview,
.features-list,
.updates-list,
.guide-summary,
.feedback-entry {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 64px 24px;
  border-bottom: 1px solid var(--line);
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--gap);
}

.channel-card {
  display: flex;
  flex-direction: column;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.channel-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.channels-overview .channel-media {
  aspect-ratio: 16 / 9;
  border-radius: 0;
}

.channels-overview .channel-name {
  font-size: 18px;
  font-weight: 600;
  margin: 18px 20px 8px;
}

.channels-overview .channel-range {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin: 0 20px 8px;
}

.channel-sample {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin: 0 20px 20px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

/* --- 本月主题片单 --- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--gap);
}

.features-list .feature-card {
  display: flex;
  flex-direction: column;
  padding: 26px 24px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.features-list .feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.features-list .feature-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-scope,
.feature-reason,
.feature-sample {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.feature-scope {
  margin-bottom: 10px;
}

.feature-reason {
  margin-bottom: 14px;
}

.feature-sample {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
}

/* --- 最新发布记录 --- */

.update-group {
  margin-bottom: 32px;
}

.update-group:last-of-type {
  margin-bottom: 0;
}

.update-month {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent);
  padding-bottom: 10px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.update-items {
  display: flex;
  flex-direction: column;
}

.update-item {
  display: grid;
  grid-template-columns: 100px 88px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line);
}

.update-date {
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  color: var(--ink-soft);
}

.update-type {
  justify-self: start;
  padding: 3px 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--accent);
  background-color: var(--surface);
  border-radius: 999px;
}

.update-summary {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

/* --- 入口核验与观看指南摘要 --- */

.guide-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--gap);
  counter-reset: guide-step;
}

.guide-step {
  position: relative;
  padding: 22px 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.guide-step::before {
  counter-increment: guide-step;
  content: counter(guide-step, decimal-leading-zero);
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.guide-step .step-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.guide-step .step-desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* --- 内容边界与反馈入口 --- */

.boundary-body {
  max-width: 760px;
  margin-bottom: 24px;
}

.boundary-text {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

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

.feedback-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.feedback-links a {
  display: inline-block;
  min-height: 44px;
  padding: 11px 22px;
  font-size: 15px;
  color: var(--ink);
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.feedback-links a:hover {
  color: var(--white);
  background-color: var(--accent);
  border-color: var(--accent);
}

/* ==========================================================================
   pages · 频道分类（channels）
   ========================================================================== */

.channel-list {
  margin-bottom: 56px;
}

.channel-list .section-title {
  margin-bottom: 10px;
}

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

.channel-list .channel-card {
  flex-direction: row;
  margin-bottom: var(--gap);
}

.channel-list .channel-card:last-child {
  margin-bottom: 0;
}

.channel-list .channel-media {
  flex: 0 0 300px;
  border-radius: 0;
}

.channel-body {
  flex: 1 1 auto;
  min-width: 0;
  padding: 24px 26px;
}

.channel-body .channel-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.channel-body .channel-range,
.channel-body .channel-form,
.channel-body .channel-samples {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.channel-body .channel-samples {
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.channel-enter {
  display: inline-block;
  margin-top: 14px;
  min-height: 44px;
  padding: 11px 20px;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: var(--radius-sm);
}

.channel-enter:hover {
  color: var(--white);
  background-color: var(--ink);
}

/* --- 频道字段对比 --- */

.channel-compare {
  margin-bottom: 56px;
}

.channel-compare .section-intro {
  margin-bottom: 24px;
}

.compare-table {
  font-size: 14px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.compare-caption {
  padding: 16px 18px;
  text-align: left;
  font-size: 14px;
  color: var(--ink-soft);
  background-color: var(--surface);
  border-bottom: 1px solid var(--line);
}

.compare-table th,
.compare-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.7;
}

.compare-table thead th {
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink);
  background-color: var(--surface);
}

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

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

.compare-table td {
  color: var(--ink-soft);
}

/* --- 频道选择建议 --- */

.channel-advice .section-intro {
  margin-bottom: 24px;
}

.advice-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--gap);
}

.advice-item {
  padding: 22px 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.advice-scene {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.advice-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ==========================================================================
   pages · 主题片单（features）
   ========================================================================== */

.feature-list,
.feature-rules,
.feature-archive {
  margin-bottom: 56px;
}

.feature-list .section-title,
.feature-rules .section-title,
.feature-archive .section-title {
  margin-bottom: 10px;
}

.feature-list .section-intro,
.feature-rules .section-intro,
.feature-archive .section-intro {
  margin-bottom: 28px;
}

.feature-list .feature-card {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 0;
  margin-bottom: var(--gap);
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.feature-list .feature-card:last-child {
  margin-bottom: 0;
}

.feature-list .feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.feature-list .feature-media {
  border-radius: 0;
  min-height: 100%;
}

.feature-body {
  min-width: 0;
  padding: 26px 28px;
}

.feature-body .feature-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-summary {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

.feature-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.feature-meta dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.feature-meta dd {
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--ink-soft);
}

/* --- 专题收录规则 --- */

.rule-item {
  padding: 20px 22px;
  margin-bottom: 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.rule-item:last-child {
  margin-bottom: 0;
}

.rule-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.rule-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* --- 历史专题跳转 --- */

.archive-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.archive-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.archive-month {
  flex: 0 0 auto;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.archive-link {
  font-size: 14px;
  color: var(--ink);
}

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

/* ==========================================================================
   pages · 观看指南（guide）
   ========================================================================== */

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

.guide-content .section:last-child {
  margin-bottom: 0;
}

.guide-content .section-title {
  margin-bottom: 10px;
}

.guide-content .section-desc {
  margin-bottom: 26px;
}

.guide-figure {
  aspect-ratio: 21 / 9;
  margin-bottom: 30px;
}

.guide-figure figcaption {
  padding: 12px 4px 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.step-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 4px 18px;
  align-items: start;
  padding: 20px 22px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.step-index {
  grid-row: 1 / span 2;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent);
}

.step-title {
  font-size: 16px;
  font-weight: 600;
}

.step-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* --- 入口核验要点 --- */

.check-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--gap);
}

.check-item {
  padding: 20px 22px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.check-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.check-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* --- 折叠问答 --- */

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

.faq-question {
  position: relative;
  padding: 18px 52px 18px 22px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  line-height: 1;
  color: var(--accent);
}

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

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

.faq-answer {
  padding: 0 22px 20px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* --- 内容边界 --- */

.boundary-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.boundary-item {
  padding: 18px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  background-color: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

/* ==========================================================================
   pages · 最新发布（updates）
   ========================================================================== */

.updates-list,
.updates-types,
.updates-archive {
  margin-bottom: 56px;
}

.updates-list .section-title,
.updates-types .section-title,
.updates-archive .section-title {
  margin-bottom: 10px;
}

.updates-list .section-intro,
.updates-types .section-intro,
.updates-archive .section-intro {
  margin-bottom: 28px;
}

.update-entry {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px dashed var(--line);
}

.update-entry:last-of-type {
  border-bottom: 0;
}

.update-entry .update-media {
  aspect-ratio: 16 / 10;
}

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

.update-entry .update-date {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.update-heading {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}

.update-entry .update-summary {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

.update-link {
  font-size: 14px;
}

.update-link a {
  color: var(--accent);
  border-bottom: 1px solid currentColor;
}

.update-link a:hover {
  color: var(--ink);
}

/* --- 变动类型说明 --- */

.type-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--gap);
  margin: 0;
}

.type-item {
  padding: 20px 22px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.type-name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent);
  margin-bottom: 8px;
}

.type-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* --- 历史记录跳转 --- */

.updates-archive .archive-item {
  justify-content: space-between;
}

.updates-archive .archive-item a {
  font-size: 14px;
}

.archive-note {
  font-size: 13px;
  color: var(--ink-soft);
}

.archive-more {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.archive-more a {
  display: inline-block;
  min-height: 44px;
  padding: 11px 20px;
  font-size: 14px;
  color: var(--ink);
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.archive-more a:hover {
  color: var(--white);
  background-color: var(--accent);
  border-color: var(--accent);
}

/* ==========================================================================
   pages · 404
   ========================================================================== */

.error-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 72px 24px 80px;
}

.error-panel {
  max-width: 640px;
  padding-bottom: 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.error-code {
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 16px;
}

.error-text {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 28px;
}

.error-action {
  display: inline-block;
  min-height: 44px;
  padding: 12px 26px;
  font-size: 15px;
  color: var(--white);
  background-color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: var(--radius-sm);
}

.error-action:hover {
  color: var(--white);
  background-color: var(--accent);
  border-color: var(--accent);
}

.error-hints h2 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 20px;
}

.error-hint-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.error-hint-list a {
  display: block;
  min-height: 44px;
  padding: 14px 18px;
  font-size: 15px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.error-hint-list a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ==========================================================================
   responsive · 平板与手机
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 36px;
    padding: 48px 24px 44px;
  }

  .hero-featured {
    grid-column: 1 / -1;
  }

  .page-layout,
  .page-layout.sidebar-left,
  .sidebar-left .page-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 32px;
  }

  .feature-list .feature-card {
    grid-template-columns: 240px minmax(0, 1fr);
  }

  .update-entry {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    padding: 12px 18px;
    gap: 12px;
  }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .site-nav {
    flex: 1 0 100%;
    margin-left: 0;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 4px;
    border-top: 1px solid var(--line);
  }

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

  .nav-list a {
    min-height: 48px;
    padding: 14px 4px;
    border-bottom: 1px solid var(--line);
    border-left: 2px solid transparent;
  }

  .nav-list a:hover,
  .nav-list a.is-current {
    border-bottom-color: var(--line);
    border-left-color: var(--accent);
  }

  .inner-main {
    padding: 24px 18px 56px;
  }

  .page-header {
    margin-bottom: 28px;
    padding-bottom: 20px;
  }

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

  .page-layout,
  .page-layout.sidebar-left,
  .sidebar-left .page-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }

  .page-sidebar,
  .channel-sidebar,
  .feature-sidebar,
  .updates-sidebar {
    padding: 20px 18px;
  }

  /* 手机端把侧栏移到内容之后 */
  .channel-sidebar,
  .feature-sidebar,
  .guide-sidebar,
  .updates-sidebar {
    order: 2;
  }

  .channel-content,
  .page-content,
  .layout-content {
    order: 1;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding: 36px 18px 40px;
  }

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

  .channels-overview,
  .features-list,
  .updates-list,
  .guide-summary,
  .feedback-entry {
    padding: 44px 18px;
  }

  .section-title {
    font-size: 21px;
  }

  .channel-list .channel-card {
    flex-direction: column;
  }

  .channel-list .channel-media {
    flex: 0 0 auto;
    aspect-ratio: 16 / 9;
  }

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

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

  .feature-list .feature-media {
    aspect-ratio: 16 / 9;
  }

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

  .update-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .update-type {
    justify-self: start;
  }

  .guide-figure {
    aspect-ratio: 16 / 9;
  }

  .step-item {
    grid-template-columns: 44px minmax(0, 1fr);
    padding: 18px 16px;
  }

  .step-index {
    font-size: 18px;
  }

  .update-entry {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .update-entry .update-media {
    aspect-ratio: 16 / 9;
  }

  .compare-table {
    font-size: 13px;
  }

  .compare-table th,
  .compare-table td {
    padding: 12px 14px;
  }

  .compare-table tbody th {
    white-space: normal;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding: 40px 18px 32px;
  }

  .footer-copy {
    padding: 18px;
  }

  .error-main {
    padding: 48px 18px 64px;
  }

  .error-panel h1 {
    font-size: 26px;
  }

  .error-hints h2 {
    font-size: 21px;
  }
}

@media (max-width: 480px) {
  .brand-slogan {
    display: none;
  }

  .hero-title {
    font-size: 23px;
  }

  .page-title {
    font-size: 23px;
  }

  .feedback-links a,
  .archive-more a {
    flex: 1 1 auto;
    text-align: center;
  }

  .theme-tags li a {
    padding: 8px 13px;
    font-size: 13px;
  }
}