/* ==========================================================================
   飘花影院免费电影 · 全站样式表
   1. base       基础变量、重置、排版
   2. layout     骨架：页头、导航、主体、面包屑、页脚
   3. components 通用组件：按钮、卡片、表格、步骤、FAQ
   4. pages      首页与各内页专属模块
   5. responsive 响应式断点
   ========================================================================== */

/* ==========================================================================
   1. base
   ========================================================================== */

:root {
  --ink: #1F2933;
  --ink-soft: #52606D;
  --bg: #F5F7FA;
  --surface: #FFFFFF;
  --accent: #2F6F6B;
  --rule: #D9E2EC;
  --radius: 6px;
  --wrap: 1140px;
  --wrap-narrow: 900px;
  --gap: 32px;
  --font-serif: "Songti SC", "SimSun", "Noto Serif SC", Georgia, serif;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", "Menlo", "Consolas", "Liberation Mono", monospace;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

p {
  margin: 0;
}

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

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

a:hover,
a:focus-visible {
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
  border: 0;
}

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

time {
  font-family: var(--font-mono);
  font-style: normal;
}

figure {
  margin: 0;
}

figcaption {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.6;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 10px 16px;
  background: var(--accent);
  color: #fff;
  z-index: 50;
}

.skip-link:focus {
  left: 8px;
  top: 8px;
}

/* ==========================================================================
   2. layout
   ========================================================================== */

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--rule);
}

.site-header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
}

.site-brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--ink);
  text-decoration: none;
}

.site-brand:hover,
.site-brand:focus-visible {
  text-decoration: none;
  color: var(--accent);
}

.site-brand-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
}

.site-brand-tag {
  font-size: 12px;
  color: var(--ink-soft);
  line-height: 1.4;
}

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

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 22px;
}

.nav-link {
  display: inline-block;
  padding: 8px 0;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--accent);
  text-decoration: none;
  border-bottom-color: var(--accent);
}

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

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 44px;
  padding: 0;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
}

.site-main {
  display: block;
}

.home-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 64px;
}

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

.breadcrumb {
  padding: 20px 0 0;
  font-size: 14px;
  color: var(--ink-soft);
}

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

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

.breadcrumb-sep {
  margin: 0 8px;
  color: var(--rule);
}

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

.page-header {
  padding: 18px 0 26px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 40px;
}

.page-title {
  font-size: 32px;
  color: var(--ink);
}

.page-description {
  margin-top: 14px;
  max-width: 780px;
  font-size: 16px;
  color: var(--ink-soft);
}

.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--rule);
}

.site-footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 44px 24px 28px;
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px 32px;
}

.footer-heading {
  font-size: 15px;
  margin-bottom: 12px;
  color: var(--ink);
}

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

.footer-list a {
  font-size: 14px;
  color: var(--ink-soft);
}

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

.footer-bottom {
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.footer-desc,
.footer-copy {
  font-size: 13px;
  color: var(--ink-soft);
}

/* ==========================================================================
   3. components
   ========================================================================== */

.btn {
  display: inline-block;
  min-height: 44px;
  padding: 11px 22px;
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.5;
  text-align: center;
  border: 1px solid transparent;
}

.btn:hover,
.btn:focus-visible {
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #275B58;
  border-color: #275B58;
  color: #fff;
}

.btn-secondary {
  background: var(--surface);
  border-color: var(--rule);
  color: var(--ink);
}

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

.text-link {
  display: inline-block;
  font-size: 15px;
  color: var(--accent);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 2px;
}

.text-link:hover,
.text-link:focus-visible {
  border-bottom-color: var(--accent);
  text-decoration: none;
}

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

.section-head {
  margin-bottom: 24px;
}

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

.section-desc,
.section-lead,
.section-intro {
  margin-top: 10px;
  max-width: 820px;
  font-size: 15px;
  color: var(--ink-soft);
}

.section-more,
.section-footnote {
  margin-top: 22px;
  font-size: 15px;
}

.section-footnote a {
  margin-right: 18px;
}

/* 步骤清单（首页与查阅路径页共用结构，作用域区分） */
.step-list {
  counter-reset: step;
}

.step-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}

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

.step-index {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--accent);
  line-height: 1.5;
}

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

.step-text,
.step-desc {
  margin-top: 6px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* 表格通用外壳 */
.table-scroll,
.compare-table-wrap,
.fields-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
}

table caption,
.compare-caption,
.field-table-caption {
  padding: 14px 16px;
  text-align: left;
  font-size: 14px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--rule);
}

th,
td {
  padding: 12px 16px;
  font-size: 15px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--rule);
}

thead th {
  background: var(--bg);
  font-weight: 700;
  color: var(--ink);
}

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

/* 相关链接列表 */
.related-links,
.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px 24px;
}

.related-item {
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  font-size: 15px;
}

.related-desc {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}

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

.faq-item {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.faq-question {
  padding: 15px 18px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "＋";
  float: right;
  font-weight: 400;
  color: var(--accent);
}

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

.faq-answer {
  padding: 0 18px 16px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ==========================================================================
   4. pages
   ========================================================================== */

/* ---- 4.1 首页 ---- */

.topbar {
  background: var(--ink);
  color: #E4E7EB;
}

.topbar-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 9px 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 24px;
  font-size: 13px;
}

.topbar-note {
  color: #CBD2D9;
}

.topbar-update {
  color: #fff;
}

.hero-section {
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--rule);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 460px);
  gap: 40px;
  align-items: center;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 12px;
}

.hero-title {
  font-size: 38px;
  line-height: 1.3;
}

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

.hero-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-figure {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.hero-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.hero-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--rule);
}

.channel-overview {
  border-top: 1px solid var(--rule);
}

.channel-row {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr) minmax(0, 1.1fr) 96px;
  gap: 6px 24px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}

.channel-name {
  font-size: 17px;
}

.channel-tone,
.channel-scope {
  font-size: 15px;
  color: var(--ink-soft);
}

.channel-link {
  justify-self: end;
  font-size: 14px;
}

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

.collection-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.collection-name {
  font-size: 18px;
}

.collection-scope,
.collection-fit {
  font-size: 15px;
  color: var(--ink-soft);
}

.collection-link {
  margin-top: auto;
  padding-top: 10px;
  font-size: 14px;
}

.fields-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.fields-summary {
  font-size: 15px;
}

.fields-summary th {
  width: 142px;
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--ink);
}

.fields-boundary {
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.fields-boundary-title {
  font-size: 17px;
  margin-bottom: 10px;
}

.fields-boundary p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.log-list {
  border-top: 1px solid var(--rule);
}

.log-item {
  border-bottom: 1px solid var(--rule);
}

.log-details {
  padding: 0;
}

.log-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 16px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

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

.log-time {
  font-size: 14px;
  color: var(--ink-soft);
  min-width: 96px;
}

.log-topic {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.log-tag {
  margin-left: auto;
  padding: 2px 10px;
  font-size: 12px;
  color: var(--accent);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.log-text {
  padding: 0 0 16px;
  font-size: 15px;
  color: var(--ink-soft);
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px 32px;
}

.index-heading {
  font-size: 16px;
  margin-bottom: 10px;
}

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

.index-list a {
  font-size: 14px;
  color: var(--ink-soft);
}

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

.media-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.media-figure {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.media-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.media-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--rule);
}

/* ---- 4.2 题材频道页 ---- */

.page-layout {
  display: grid;
  gap: 40px;
  align-items: start;
}

.channels-layout,
.page-layout.sidebar-left {
  grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
}

.page-aside {
  position: sticky;
  top: 20px;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.aside-heading {
  font-size: 16px;
  margin-bottom: 12px;
}

.aside-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.aside-list a {
  display: block;
  padding: 8px 0;
  font-size: 15px;
  color: var(--ink-soft);
}

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

.aside-note {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  font-size: 13px;
  color: var(--ink-soft);
}

.content-section {
  padding: 32px 0;
  border-top: 1px solid var(--rule);
}

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

.channel-block {
  display: grid;
  grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding: 26px 0;
  border-bottom: 1px solid var(--rule);
}

.channel-block:last-child {
  border-bottom: 0;
}

.channel-figure {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.channel-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.channel-figure-caption {
  padding: 10px 14px;
  border-top: 1px solid var(--rule);
}

.channel-orientation {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink);
}

.channel-scope {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink-soft);
}

.compare-table th {
  width: 180px;
  font-weight: 700;
}

.advice-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.advice-item {
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.advice-title {
  font-size: 16px;
  margin-bottom: 8px;
}

.advice-text {
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---- 4.3 专题片单页 ---- */

.collections-layout {
  grid-template-columns: minmax(0, 1fr) minmax(240px, 280px);
}

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

.collections-list .section-title {
  margin-bottom: 6px;
}

.collection-item {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding: 26px 0;
  border-top: 1px solid var(--rule);
}

.collection-item:first-of-type {
  border-top: 0;
}

.collection-figure {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.collection-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.collection-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--rule);
}

.collection-meta {
  margin: 12px 0 0;
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 6px 16px;
  font-size: 14px;
}

.collection-meta dt {
  color: var(--ink-soft);
  font-family: var(--font-mono);
}

.collection-meta dd {
  margin: 0;
  color: var(--ink);
}

.collection-note {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-soft);
}

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

.criteria-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.criteria-index {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--accent);
}

.criteria-name {
  font-size: 16px;
}

.criteria-text {
  font-size: 15px;
  color: var(--ink-soft);
}

.scene-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.scene-item {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.scene-name {
  font-size: 16px;
  margin-bottom: 8px;
}

.scene-text {
  font-size: 15px;
  color: var(--ink-soft);
}

.collections-aside {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.aside-block {
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.aside-title {
  font-size: 16px;
  margin-bottom: 10px;
}

.aside-text {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

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

/* ---- 4.4 条目字段说明页 ---- */

.section-field-table,
.section-field-rules,
.section-scope,
.section-related {
  padding: 32px 0;
  border-top: 1px solid var(--rule);
}

.section-field-table {
  border-top: 0;
  padding-top: 0;
}

.field-figure {
  margin: 20px 0;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.field-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.field-figure-caption {
  padding: 12px 16px;
  border-top: 1px solid var(--rule);
}

.field-table th {
  width: 150px;
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--ink);
}

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

.rule-item {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.rule-title {
  font-size: 16px;
  margin-bottom: 8px;
}

.rule-desc {
  font-size: 15px;
  color: var(--ink-soft);
}

.scope-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.scope-column {
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.scope-title {
  font-size: 17px;
  margin-bottom: 12px;
}

.scope-do .scope-title {
  color: var(--accent);
}

.scope-dont .scope-title {
  color: var(--ink-soft);
}

.scope-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 15px;
  color: var(--ink-soft);
}

.scope-list li {
  padding-left: 16px;
  position: relative;
}

.scope-list li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.scope-note {
  margin-top: 18px;
  font-size: 14px;
  color: var(--ink-soft);
}

/* ---- 4.5 查阅路径指引页 ---- */

.guide-steps,
.guide-path,
.guide-faq,
.guide-related {
  padding: 32px 0;
  border-top: 1px solid var(--rule);
}

.guide-steps {
  border-top: 0;
  padding-top: 0;
}

.guide-path .section-title {
  margin-bottom: 6px;
}

.guide-figure {
  margin: 20px 0;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.guide-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.guide-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--rule);
}

.path-detail {
  padding: 16px 0;
  border-top: 1px solid var(--rule);
}

.path-detail:first-of-type {
  border-top: 0;
}

.subsection-title {
  font-size: 16px;
  margin-bottom: 8px;
}

.path-detail p {
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---- 4.6 404 ---- */

.error-main {
  max-width: var(--wrap-narrow);
  margin: 0 auto;
  padding: 64px 24px 72px;
}

.error-block {
  padding-bottom: 36px;
  border-bottom: 1px solid var(--rule);
}

.error-code {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--accent);
  margin-bottom: 10px;
}

.error-title {
  font-size: 30px;
}

.error-text {
  margin-top: 14px;
  font-size: 16px;
  color: var(--ink-soft);
}

.error-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.error-action {
  display: inline-block;
  min-height: 44px;
  padding: 11px 20px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  font-size: 15px;
  color: var(--ink);
}

.error-action:hover,
.error-action:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.error-hint {
  padding-top: 32px;
}

.error-hint-title {
  font-size: 20px;
  margin-bottom: 10px;
}

.error-hint-text {
  font-size: 15px;
  color: var(--ink-soft);
}

/* 滚动淡入（仅增强，初始可见） */
.reveal {
  animation: reveal-in 0.5s ease-out both;
}

@keyframes reveal-in {
  from {
    transform: translateY(10px);
  }

  to {
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    animation: none;
  }
}

/* ==========================================================================
   5. responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-title {
    font-size: 32px;
  }

  .channel-row {
    grid-template-columns: 140px minmax(0, 1fr) minmax(0, 1fr);
  }

  .channel-link {
    grid-column: 2 / -1;
    justify-self: start;
  }

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

@media (max-width: 900px) {
  .site-header-inner {
    padding: 12px 20px;
  }

  .nav-toggle {
    display: flex;
  }

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

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

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

  .nav-link {
    min-height: 44px;
    padding: 11px 0;
    border-bottom: 1px solid var(--rule);
  }

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

  .home-main,
  .inner-main {
    padding: 0 20px 52px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

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

  .collection-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }

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

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

  .page-aside {
    position: static;
  }

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

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

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

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

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

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  .topbar-inner {
    flex-direction: column;
    padding: 8px 20px;
  }

  .hero-section {
    padding: 32px 0 28px;
  }

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

  .page-title {
    font-size: 24px;
  }

  .section-title {
    font-size: 20px;
  }

  .error-title {
    font-size: 24px;
  }

  .channel-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .channel-link {
    grid-column: auto;
  }

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

  .step-item {
    grid-template-columns: 36px minmax(0, 1fr);
  }

  .fields-summary th,
  .field-table th,
  .compare-table th {
    width: auto;
  }

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

  .log-tag {
    margin-left: 0;
  }

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