/* ==========================================================================
   猎奇研究所 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base
   -------------------------------------------------------------------------- */
:root {
  --color-moss: #3C5A47;
  --color-moss-deep: #2E4636;
  --color-clay: #B0603A;
  --color-linen: #F5F0E6;
  --color-sand: #E7DFCF;
  --color-sand-soft: #EFE8DA;
  --color-ink: #221F1B;
  --color-sage: #7C8B7B;
  --color-line: #D6CCB8;
  --color-paper: #FBF8F1;

  --font-serif: Georgia, "Songti SC", "Noto Serif SC", serif;
  --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, Menlo, Consolas, monospace;

  --width-wide: 1180px;
  --width-inner: 1080px;
  --width-read: 720px;
  --radius-sm: 3px;
  --radius-md: 6px;
  --shadow-soft: 0 1px 0 rgba(34, 31, 27, 0.04), 0 6px 18px rgba(34, 31, 27, 0.05);
}

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

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

body {
  margin: 0;
  background-color: var(--color-linen);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

figure {
  margin: 0;
}

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

a:hover,
a:focus-visible {
  color: var(--color-clay);
  text-decoration: underline;
  text-underline-offset: 3px;
}

p {
  margin: 0 0 18px;
}

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--color-ink);
  margin: 0;
  line-height: 1.35;
}

strong {
  font-weight: 600;
  color: var(--color-moss-deep);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-sand-soft);
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  color: var(--color-moss-deep);
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  cursor: pointer;
}

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

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

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

/* --------------------------------------------------------------------------
   layout · shell
   -------------------------------------------------------------------------- */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

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

.home-main {
  max-width: var(--width-wide);
  margin: 0 auto;
  padding: 0 24px 72px;
}

.page-shell {
  max-width: var(--width-inner);
  margin: 0 auto;
}

.page-shell-narrow {
  max-width: 860px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-sage);
  padding-top: 24px;
  margin-bottom: 4px;
}

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

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

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

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

/* 页面标题区 */
.page-header {
  padding-top: 12px;
  padding-bottom: 24px;
}

.page-title {
  font-size: clamp(30px, 3.4vw, 42px);
  font-weight: 600;
  font-family: var(--font-serif);
  line-height: 1.25;
  color: var(--color-ink);
  margin: 0;
}

.page-lead {
  margin: 14px 0 0;
  max-width: 68ch;
  color: #4A453D;
  font-size: 16px;
  line-height: 1.8;
}

.archive-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-moss-deep);
  background-color: var(--color-sand);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  margin: 0 0 10px;
}

.doc-code,
.page-code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--color-sage);
  margin: 0 0 10px;
}

.code-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-moss-deep);
  background-color: var(--color-sand);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
}

/* 结论摘要 */
.summary-bar {
  border-left: 3px solid var(--color-moss);
  background-color: var(--color-sand-soft);
  padding: 16px 22px;
  margin: 0 0 32px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.summary-bar p {
  margin: 0;
  color: #3A362F;
  font-size: 15.5px;
  line-height: 1.85;
}

/* 通用两栏 */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: start;
}

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

.aside-col,
.side-column,
.content-aside {
  min-width: 0;
}

/* --------------------------------------------------------------------------
   components · header / nav
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--color-linen);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  max-width: var(--width-wide);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-moss-deep);
  white-space: nowrap;
}

.brand:hover {
  color: var(--color-clay);
  text-decoration: none;
}

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

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

.nav-item {
  position: relative;
}

.nav-link,
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 9px 14px;
  min-height: 40px;
  background: none;
  border: 0;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--color-ink);
  line-height: 1.4;
}

.nav-link:hover,
.nav-toggle:hover {
  background-color: var(--color-sand-soft);
  color: var(--color-clay);
  text-decoration: none;
}

.nav-link.is-current {
  color: var(--color-clay);
  font-weight: 600;
}

.nav-toggle::after {
  content: "";
  width: 6px;
  height: 6px;
  margin-top: -3px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.18s ease;
}

.has-dropdown.is-open > .nav-toggle::after {
  transform: rotate(-135deg);
  margin-top: 2px;
}

.dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 176px;
  padding: 6px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  display: none;
  z-index: 60;
}

.has-dropdown.is-open > .dropdown {
  display: block;
}

.dropdown li {
  margin: 0;
}

.dropdown a {
  display: block;
  padding: 9px 12px;
  min-height: 40px;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  color: var(--color-ink);
}

.dropdown a:hover {
  background-color: var(--color-sand-soft);
  color: var(--color-clay);
  text-decoration: none;
}

/* 汉堡按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background: none;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
}

.menu-bar {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--color-ink);
  border-radius: 1px;
}

/* 移动抽屉 */
.mobile-drawer {
  position: fixed;
  inset: 72px 0 0 0;
  background-color: var(--color-linen);
  border-top: 1px solid var(--color-line);
  overflow-y: auto;
  padding: 16px 24px 40px;
  z-index: 45;
}

.mobile-drawer[hidden] {
  display: none;
}

.drawer-list {
  display: flex;
  flex-direction: column;
}

.drawer-list > li {
  margin: 0;
}

.drawer-list > li > a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 4px;
  font-size: 16px;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-line);
}

.drawer-list > li > a:hover {
  color: var(--color-clay);
  text-decoration: none;
}

.drawer-list > li > a.is-current {
  color: var(--color-clay);
  font-weight: 600;
}

.drawer-group-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-sage);
  padding: 18px 4px 6px;
  border-bottom: 1px solid var(--color-line);
}

/* --------------------------------------------------------------------------
   components · footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-moss-deep);
  color: #E4E9E1;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--width-wide);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
}

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

.footer-heading {
  font-family: var(--font-serif);
  font-size: 15px;
  color: #F2EFE6;
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(245, 240, 230, 0.18);
  letter-spacing: 0.02em;
}

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

.footer-links a {
  color: #C6D1C4;
  font-size: 14px;
  line-height: 1.65;
}

.footer-links a:hover {
  color: #F2EFE6;
  text-decoration: underline;
}

.footer-note,
.footer-terms {
  font-size: 13.5px;
  line-height: 1.75;
  color: #B4C1B2;
  margin: 0 0 10px;
}

.footer-bottom {
  max-width: var(--width-wide);
  margin: 0 auto;
  padding: 18px 24px 26px;
  border-top: 1px solid rgba(245, 240, 230, 0.18);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  align-items: baseline;
  justify-content: space-between;
}

.footer-brand {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 15px;
  color: #F2EFE6;
}

.footer-copy {
  margin: 0;
  font-size: 13px;
  color: #A9B7A7;
}

/* --------------------------------------------------------------------------
   components · shared bits
   -------------------------------------------------------------------------- */
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.2vw, 27px);
  color: var(--color-moss-deep);
  margin: 0 0 10px;
}

.section-lead,
.section-intro,
.section-note {
  color: #4A453D;
  font-size: 15.5px;
  line-height: 1.85;
  max-width: 70ch;
  margin: 0 0 22px;
}

.archive-code,
.log-code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-moss-deep);
  background-color: var(--color-sand);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 1px 7px;
  white-space: nowrap;
}

.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background-color: var(--color-moss);
  color: #F7F4EC;
  border: 1px solid var(--color-moss);
}

.btn-primary:hover {
  background-color: var(--color-clay);
  border-color: var(--color-clay);
  color: #FFF8F2;
  text-decoration: none;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-moss-deep);
  border: 1px solid var(--color-moss);
}

.btn-ghost:hover {
  background-color: var(--color-sand-soft);
  color: var(--color-clay);
  border-color: var(--color-clay);
  text-decoration: none;
}

/* 筛选条 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 28px;
}

.filter-bar[role="group"] {
  justify-content: center;
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.filter-btn {
  min-height: 44px;
  padding: 0 18px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  font-size: 14.5px;
  color: var(--color-ink);
  transition: background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.filter-btn:hover {
  border-color: var(--color-clay);
  color: var(--color-clay);
}

.filter-btn.is-active {
  background-color: var(--color-clay);
  border-color: var(--color-clay);
  color: #FFF8F2;
}

/* 表格通用 */
.field-table,
.compare-table,
.record-table,
.log-table {
  width: 100%;
  font-size: 14.5px;
  border: 1px solid var(--color-line);
  background-color: var(--color-paper);
}

.field-table th,
.field-table td,
.compare-table th,
.compare-table td,
.record-table th,
.record-table td,
.log-table th,
.log-table td {
  padding: 11px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--color-line);
  line-height: 1.7;
}

.field-table thead th,
.compare-table thead th,
.record-table thead th,
.log-table thead th {
  background-color: var(--color-sand);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  font-weight: 600;
  color: var(--color-moss-deep);
  white-space: nowrap;
}

.field-table tbody th,
.field-table tbody td code {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--color-moss-deep);
}

.field-table tbody th {
  width: 30%;
  background-color: var(--color-sand-soft);
}

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

/* 相关链接块 */
.related-links,
.related-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.related-links li,
.related-list li {
  margin: 0;
}

.related-links a,
.related-list a {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-moss);
}

.related-links p,
.related-list p {
  margin: 2px 0 0;
  font-size: 14px;
  color: #5A554B;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages · index
   -------------------------------------------------------------------------- */
.hero {
  padding: 40px 0 48px;
  border-bottom: 1px solid var(--color-line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 48px;
  align-items: center;
}

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

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--color-clay);
  margin: 0 0 14px;
}

.hero-copy h1 {
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.2;
  color: var(--color-moss-deep);
  margin: 0 0 16px;
}

.hero-lead {
  font-size: 16.5px;
  line-height: 1.85;
  color: #3F3A32;
  max-width: 46ch;
  margin: 0 0 24px;
}

.topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 26px;
}

.topic-tags .tag {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background-color: var(--color-paper);
  font-size: 14px;
  color: var(--color-ink);
  transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.topic-tags .tag:hover {
  background-color: var(--color-clay);
  border-color: var(--color-clay);
  color: #FFF8F2;
  text-decoration: none;
}

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

.hero-media {
  position: relative;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-sand);
}

.hero-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.hero-media .archive-badge {
  position: absolute;
  left: 14px;
  bottom: 14px;
  margin: 0;
  background-color: var(--color-paper);
}

/* 近期指南条 */
.guide-strip {
  padding: 44px 0;
  border-bottom: 1px solid var(--color-line);
}

.guide-strip-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
  margin-top: 20px;
}

.guide-strip-item {
  min-width: 0;
  padding-left: 16px;
  border-left: 1px solid var(--color-line);
}

.guide-strip-item:first-child {
  padding-left: 0;
  border-left: 0;
}

.guide-strip-heading {
  font-family: var(--font-serif);
  font-size: 17px;
  margin: 10px 0 6px;
  line-height: 1.5;
}

.guide-strip-heading a {
  color: var(--color-ink);
}

.guide-strip-heading a:hover {
  color: var(--color-clay);
}

.guide-strip-text {
  margin: 0;
  font-size: 14.5px;
  color: #544F46;
  line-height: 1.75;
}

/* 题材频道总览 */
.channel-overview {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
}

.channel-overview .section-title,
.channel-overview .section-lead {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.channel-overview .section-lead {
  max-width: 62ch;
}

.channel-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-line);
}

.channel-row {
  display: grid;
  grid-template-columns: auto minmax(0, 200px) minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 16px 6px;
  border-bottom: 1px solid var(--color-line);
}

.channel-row.is-hidden {
  display: none;
}

.channel-row .archive-code {
  min-width: 58px;
  text-align: center;
}

.channel-name {
  font-family: var(--font-serif);
  font-size: 17px;
  margin: 0;
  color: var(--color-ink);
}

.channel-desc {
  margin: 0;
  font-size: 14.5px;
  color: #544F46;
  line-height: 1.7;
}

.channel-link {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  color: var(--color-moss);
}

.channel-link:hover {
  color: var(--color-clay);
}

.channel-note {
  margin: 20px 0 0;
  text-align: center;
  font-size: 14px;
  color: var(--color-sage);
}

/* 专题片单 */
.feature-list {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
}

.feature-item {
  display: grid;
  grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  padding: 26px 0;
  border-top: 1px solid var(--color-line);
}

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

.feature-media {
  position: relative;
  min-width: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-sand);
}

.feature-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.feature-media .archive-badge {
  position: absolute;
  left: 12px;
  bottom: 12px;
  margin: 0;
  background-color: var(--color-paper);
}

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

.feature-title {
  font-family: var(--font-serif);
  font-size: 20px;
  margin: 0 0 8px;
  color: var(--color-moss-deep);
}

.feature-summary,
.feature-purpose {
  margin: 0 0 12px;
  font-size: 15px;
  color: #3F3A32;
  line-height: 1.8;
}

.feature-points {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0 0 12px;
}

.feature-points li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.75;
  color: #4A453D;
}

.feature-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  background-color: var(--color-clay);
  border-radius: 1px;
}

.feature-order {
  margin: 0;
  font-size: 14px;
  color: #544F46;
  line-height: 1.75;
}

.feature-order .field-name {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--color-moss-deep);
  background-color: var(--color-sand-soft);
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  margin-right: 6px;
}

.feature-more {
  margin: 24px 0 0;
  text-align: center;
  font-size: 15px;
  font-weight: 600;
}

/* 观看前四问 */
.pre-watch {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
}

.pre-watch-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 32px;
  margin-top: 8px;
}

.pre-watch-item {
  min-width: 0;
  padding: 20px 0;
  border-top: 1px solid var(--color-line);
}

.pre-watch-item .step-index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--color-clay);
  margin-bottom: 6px;
}

.pre-watch-question {
  font-family: var(--font-serif);
  font-size: 17px;
  margin: 0 0 6px;
  color: var(--color-ink);
}

.pre-watch-answer {
  margin: 0 0 8px;
  font-size: 14.5px;
  color: #4A453D;
  line-height: 1.75;
}

.pre-watch-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-moss);
}

.pre-watch-link:hover {
  color: var(--color-clay);
}

/* 更新记录 */
.update-log {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
}

.log-table {
  margin-top: 16px;
}

.log-table .log-code {
  white-space: nowrap;
}

.update-note {
  margin: 16px 0 0;
  font-size: 14px;
  color: var(--color-sage);
}

/* 内容声明 */
.content-note {
  padding: 40px 0 0;
}

.content-note p {
  font-size: 14.5px;
  color: #544F46;
  line-height: 1.85;
  max-width: 78ch;
}

/* --------------------------------------------------------------------------
   pages · channels
   -------------------------------------------------------------------------- */
.channel-groups,
.group-compare {
  margin-bottom: 40px;
}

.channel-groups h2,
.group-compare h2,
.aside-block h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-moss-deep);
  margin: 0 0 10px;
}

.section-media {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-sand);
  margin: 0 0 24px;
}

.section-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.section-media figcaption {
  padding: 10px 14px;
  font-size: 13.5px;
  color: #544F46;
  background-color: var(--color-paper);
  border-top: 1px solid var(--color-line);
  line-height: 1.7;
}

.group-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-line);
}

.group-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-line);
}

.group-item .archive-badge {
  margin: 3px 0 0;
  min-width: 54px;
  text-align: center;
}

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

.group-body h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  margin: 0 0 4px;
  color: var(--color-ink);
}

.group-body p {
  margin: 0 0 4px;
  font-size: 14.5px;
  color: #4A453D;
  line-height: 1.75;
}

.group-body p:last-child {
  margin-bottom: 0;
  color: var(--color-sage);
  font-size: 13.5px;
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 16px;
}

.compare-col {
  min-width: 0;
  padding: 16px 18px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
}

.compare-col h3 {
  font-family: var(--font-serif);
  font-size: 16px;
  margin: 0 0 8px;
  color: var(--color-moss-deep);
}

.compare-col p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.75;
  color: #4A453D;
}

.compare-col p:last-child {
  margin-bottom: 0;
}

.aside-block {
  padding: 18px 20px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.aside-block h2 {
  font-size: 17px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

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

.pitfall-item {
  min-width: 0;
}

.pitfall-item h3 {
  font-family: var(--font-serif);
  font-size: 15.5px;
  margin: 0 0 4px;
  color: var(--color-clay);
}

.pitfall-item p {
  margin: 0;
  font-size: 14px;
  color: #4A453D;
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   pages · features
   -------------------------------------------------------------------------- */
.page-features .filter-bar {
  justify-content: center;
}

.page-features .feature-list {
  border-bottom: 0;
  padding-top: 8px;
}

.feature-item.is-hidden {
  display: none;
}

.feature-media .gallery-trigger {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  line-height: 0;
}

.feature-media .gallery-trigger img {
  transition: opacity 0.18s ease;
}

.feature-media .gallery-trigger:hover img {
  opacity: 0.92;
}

.info-table-guide,
.cross-watch-tips {
  margin-top: 40px;
}

.info-table-guide h2,
.cross-watch-tips h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-moss-deep);
  margin: 0 0 10px;
}

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

.tips-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.8;
  color: #3F3A32;
}

.tips-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 7px;
  height: 7px;
  background-color: var(--color-moss);
  border-radius: 1px;
}

/* 画廊放大视图 */
.gallery-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background-color: rgba(34, 31, 27, 0.86);
}

.gallery-lightbox[hidden] {
  display: none;
}

.lightbox-figure {
  max-width: min(92vw, 980px);
  max-height: 86vh;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.lightbox-figure img {
  width: 100%;
  height: auto;
  max-height: 72vh;
  object-fit: contain;
  background-color: var(--color-sand);
}

.lightbox-caption {
  padding: 10px 16px;
  font-size: 13.5px;
  color: #3F3A32;
  border-top: 1px solid var(--color-line);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  font-size: 18px;
  color: var(--color-ink);
}

.lightbox-close {
  top: 20px;
  right: 20px;
}

.lightbox-prev {
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-next {
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  background-color: var(--color-clay);
  border-color: var(--color-clay);
  color: #FFF8F2;
}

/* --------------------------------------------------------------------------
   pages · watch-guide
   -------------------------------------------------------------------------- */
.guide-steps,
.annotation-guide,
.pitfalls {
  margin-bottom: 40px;
}

.guide-steps h2,
.annotation-guide h2,
.pitfalls h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-moss-deep);
  margin: 0 0 10px;
}

.guide-figure {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-sand);
  margin: 0 0 24px;
}

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

.guide-figure figcaption {
  padding: 10px 14px;
  font-size: 13.5px;
  color: #544F46;
  background-color: var(--color-paper);
  border-top: 1px solid var(--color-line);
  line-height: 1.7;
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.step-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 16px 18px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
}

.step-item .step-num {
  grid-row: span 3;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: #F7F4EC;
  background-color: var(--color-moss);
  border-radius: var(--radius-sm);
}

.step-item h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  margin: 0 0 4px;
  color: var(--color-ink);
}

.step-item p {
  margin: 0 0 6px;
  font-size: 14.5px;
  color: #4A453D;
  line-height: 1.75;
}

.step-item .step-example {
  margin: 0;
  font-size: 13.5px;
  color: var(--color-sage);
  padding-left: 12px;
  border-left: 2px solid var(--color-sand);
}

.pitfalls .pitfall-list {
  gap: 16px;
}

.pitfalls .pitfall-item {
  padding: 14px 18px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
}

.pitfalls .pitfall-item h3 {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--color-clay);
  margin: 0 0 4px;
}

.pitfalls .pitfall-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #4A453D;
}

.content-main .related-links h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-moss-deep);
  margin: 0 0 14px;
}

.content-main .related-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.content-main .related-item {
  min-width: 0;
  padding: 14px 16px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
}

.content-main .related-item a {
  font-size: 15px;
  font-weight: 600;
}

.content-main .related-item p {
  margin: 4px 0 0;
  font-size: 13.5px;
  color: #544F46;
  line-height: 1.7;
}

.toc,
.content-aside .aside-block {
  padding: 18px 20px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.aside-heading {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--color-moss-deep);
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

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

.toc-list a {
  display: block;
  padding: 7px 0;
  font-size: 14.5px;
  color: #3F3A32;
  border-left: 2px solid transparent;
  padding-left: 10px;
}

.toc-list a:hover,
.toc-list a.is-active {
  color: var(--color-clay);
  border-left-color: var(--color-clay);
  text-decoration: none;
}

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

.aside-links a {
  font-size: 14.5px;
  color: var(--color-moss);
}

/* --------------------------------------------------------------------------
   pages · entry-check
   -------------------------------------------------------------------------- */
.page-entry-check .page-title {
  padding-bottom: 0;
}

.check-figure {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-sand);
  margin: 0 0 32px;
}

.check-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.check-figure figcaption {
  padding: 10px 14px;
  font-size: 13.5px;
  color: #544F46;
  background-color: var(--color-paper);
  border-top: 1px solid var(--color-line);
  line-height: 1.7;
}

.checklist,
.compare-block,
.reject-block,
.related-block {
  margin-bottom: 36px;
}

.checklist h2,
.compare-block h2,
.reject-block h2,
.related-block h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-moss-deep);
  margin: 0 0 10px;
}

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

.check-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 16px 18px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
}

.check-item .check-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--color-moss-deep);
  background-color: var(--color-sand);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
}

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

.check-body h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  margin: 0 0 6px;
  color: var(--color-ink);
}

.check-rule {
  margin: 0 0 6px;
  font-size: 14.5px;
  color: #3F3A32;
  line-height: 1.75;
}

.check-fail {
  margin: 0;
  font-size: 13.5px;
  color: var(--color-clay);
  line-height: 1.7;
  padding-left: 12px;
  border-left: 2px solid var(--color-sand);
}

.compare-table {
  margin-top: 14px;
}

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

.reject-item {
  padding: 14px 18px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
}

.reject-item h3 {
  font-family: var(--font-serif);
  font-size: 16px;
  margin: 0 0 4px;
  color: var(--color-moss-deep);
}

.reject-item p {
  margin: 0;
  font-size: 14.5px;
  color: #4A453D;
  line-height: 1.75;
}

.related-block .related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.related-block .related-item {
  min-width: 0;
  padding: 14px 16px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
}

.related-block .related-item a {
  font-size: 15px;
  font-weight: 600;
}

.related-block .related-item p {
  margin: 4px 0 0;
  font-size: 13.5px;
  color: #544F46;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages · feedback
   -------------------------------------------------------------------------- */
.feedback-categories,
.feedback-elements,
.feedback-flow {
  margin-bottom: 36px;
}

.feedback-categories h2,
.feedback-elements h2,
.feedback-flow h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-moss-deep);
  margin: 0 0 10px;
}

.category-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 10px;
}

.category-item {
  min-width: 0;
  padding: 16px 18px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
}

.category-item h3 {
  font-family: var(--font-serif);
  font-size: 16.5px;
  margin: 0 0 6px;
  color: var(--color-ink);
}

.category-scope {
  margin: 0 0 8px;
  font-size: 14.5px;
  color: #3F3A32;
  line-height: 1.75;
}

.category-example {
  margin: 0;
  font-size: 13.5px;
  color: #544F46;
  line-height: 1.7;
  padding: 8px 10px;
  background-color: var(--color-sand-soft);
  border-radius: var(--radius-sm);
}

.media-figure {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-sand);
  margin: 0 0 22px;
}

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

.media-figure figcaption {
  padding: 10px 14px;
  font-size: 13.5px;
  color: #544F46;
  background-color: var(--color-paper);
  border-top: 1px solid var(--color-line);
  line-height: 1.7;
}

.element-list {
  display: grid;
  grid-template-columns: minmax(0, 150px) minmax(0, 1fr);
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--color-line);
}

.element-list dt {
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--color-moss-deep);
  background-color: var(--color-sand-soft);
  border-bottom: 1px solid var(--color-line);
}

.element-list dd {
  margin: 0;
  padding: 12px 16px;
  font-size: 14.5px;
  color: #3F3A32;
  line-height: 1.75;
  border-bottom: 1px solid var(--color-line);
  background-color: var(--color-paper);
}

.flow-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 10px;
}

.flow-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 16px;
  align-items: start;
  padding: 14px 18px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
}

.flow-step .step-index {
  grid-row: span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: #F7F4EC;
  background-color: var(--color-moss);
  border-radius: var(--radius-sm);
}

.flow-step .step-name {
  font-family: var(--font-serif);
  font-size: 16.5px;
  margin: 0;
  color: var(--color-ink);
  align-self: center;
}

.flow-step p {
  margin: 2px 0 0;
  font-size: 14.5px;
  color: #4A453D;
  line-height: 1.75;
}

.side-column .side-block {
  padding: 18px 20px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.side-block h2 {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--color-moss-deep);
  margin: 0 0 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.side-block > p {
  font-size: 14px;
  color: #4A453D;
  line-height: 1.75;
  margin: 0 0 12px;
}

.record-table {
  font-size: 13.5px;
}

.record-table th,
.record-table td {
  padding: 9px 10px;
}

.side-note {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--color-sage);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages · faq
   -------------------------------------------------------------------------- */
.faq-figure {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-sand);
  margin: 0 0 32px;
}

.faq-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.faq-figure figcaption {
  padding: 10px 14px;
  font-size: 13.5px;
  color: #544F46;
  background-color: var(--color-paper);
  border-top: 1px solid var(--color-line);
  line-height: 1.7;
}

.faq-group {
  margin-bottom: 36px;
}

.faq-group-head {
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-moss);
  margin-bottom: 4px;
}

.faq-group-head .archive-badge {
  margin-bottom: 8px;
}

.faq-group-head h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-moss-deep);
  margin: 0 0 6px;
}

.faq-group-desc {
  margin: 0;
  font-size: 14.5px;
  color: var(--color-sage);
  line-height: 1.7;
}

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

.faq-item {
  border-bottom: 1px solid var(--color-line);
}

.faq-question {
  position: relative;
  display: block;
  padding: 16px 40px 16px 0;
  min-height: 44px;
  font-family: var(--font-serif);
  font-size: 16.5px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 24px;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--color-moss);
  border-bottom: 2px solid var(--color-moss);
  transform: rotate(45deg);
  transition: transform 0.18s ease;
}

.faq-item[open] .faq-question::after {
  transform: rotate(-135deg);
  top: 26px;
}

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

.faq-answer {
  padding: 0 0 18px;
}

.faq-answer p {
  margin: 0 0 10px;
  font-size: 14.5px;
  color: #3F3A32;
  line-height: 1.85;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.faq-answer a {
  font-weight: 600;
}

.faq-answer a:hover {
  color: var(--color-clay);
}

.related {
  margin-top: 8px;
}

.related-title {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-moss-deep);
  margin: 0 0 16px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.related-grid .related-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  padding: 16px 18px;
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  color: var(--color-ink);
  transition: border-color 0.16s ease, background-color 0.16s ease;
}

.related-grid .related-item:hover {
  border-color: var(--color-clay);
  background-color: #FFFCF5;
  text-decoration: none;
}

.related-grid .related-title {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--color-moss);
  margin: 0;
}

.related-grid .related-desc {
  font-size: 13.5px;
  color: #544F46;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages · 404
   -------------------------------------------------------------------------- */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 24px 80px;
}

.error-inner {
  max-width: 640px;
  width: 100%;
  text-align: left;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--color-clay);
  margin: 0 0 12px;
}

.error-inner h1 {
  font-size: clamp(28px, 3.6vw, 40px);
  color: var(--color-moss-deep);
  margin: 0 0 14px;
}

.error-lead {
  font-size: 16px;
  color: #3F3A32;
  line-height: 1.85;
  margin: 0 0 26px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.error-routes {
  border-top: 1px solid var(--color-line);
  padding-top: 22px;
  margin-bottom: 22px;
}

.error-routes h2 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--color-moss-deep);
  margin: 0 0 12px;
}

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

.error-route-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-line);
}

.error-route-list a {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-moss);
}

.error-route-list span {
  font-size: 13.5px;
  color: var(--color-sage);
}

.error-note {
  font-size: 14px;
  color: #544F46;
  line-height: 1.8;
  margin: 0;
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .header-inner {
    padding: 0 20px;
  }

  .home-main,
  .site-main.inner-main {
    padding-left: 20px;
    padding-right: 20px;
  }

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

  .hero-lead {
    max-width: none;
  }

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

  .page-layout {
    grid-template-columns: minmax(0, 1fr) 264px;
    gap: 32px;
  }

  .feature-item {
    grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
    gap: 22px;
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
    padding: 40px 20px 28px;
  }

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

@media (max-width: 768px) {
  body {
    font-size: 15.5px;
  }

  .site-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .header-inner {
    height: 64px;
    padding: 0 16px;
  }

  .mobile-drawer {
    inset: 64px 0 0 0;
    padding: 12px 16px 40px;
  }

  .home-main,
  .site-main.inner-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .site-main.inner-main {
    padding-bottom: 48px;
  }

  .home-main {
    padding-bottom: 56px;
  }

  .breadcrumb {
    padding-top: 18px;
    font-size: 12.5px;
  }

  .page-header {
    padding-top: 10px;
    padding-bottom: 18px;
  }

  .page-title,
  .hero-copy h1 {
    font-size: 26px;
    line-height: 1.3;
  }

  .page-lead {
    font-size: 15px;
    margin-top: 10px;
  }

  .summary-bar {
    padding: 14px 16px;
    margin-bottom: 24px;
  }

  .summary-bar p {
    font-size: 14.5px;
  }

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

  .hero {
    padding: 24px 0 32px;
  }

  .hero-copy h1 {
    margin-bottom: 12px;
  }

  .hero-lead {
    font-size: 15.5px;
    margin-bottom: 18px;
  }

  .topic-tags .tag {
    min-height: 44px;
  }

  .hero-actions .btn-primary,
  .hero-actions .btn-ghost {
    flex: 1 1 auto;
  }

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

  .guide-strip,
  .channel-overview,
  .feature-list,
  .pre-watch,
  .update-log {
    padding: 32px 0;
  }

  .guide-strip-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .guide-strip-item {
    padding: 16px 0;
    border-left: 0;
    border-top: 1px solid var(--color-line);
  }

  .guide-strip-item:first-child {
    border-top: 0;
    padding-top: 0;
  }

  .channel-row {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 6px 12px;
    padding: 14px 0;
  }

  .channel-row .archive-code {
    grid-row: 1;
    align-self: center;
  }

  .channel-name {
    grid-row: 1;
    grid-column: 2;
  }

  .channel-desc {
    grid-row: 2;
    grid-column: 1 / -1;
  }

  .channel-link {
    grid-row: 3;
    grid-column: 1 / -1;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }

  .feature-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
    padding: 22px 0;
  }

  .feature-media img {
    aspect-ratio: 16 / 10;
  }

  .pre-watch-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .pre-watch-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }

  .log-table,
  .field-table,
  .compare-table,
  .record-table {
    font-size: 13.5px;
  }

  .log-table th,
  .log-table td,
  .field-table th,
  .field-table td,
  .compare-table th,
  .compare-table td,
  .record-table th,
  .record-table td {
    padding: 9px 10px;
  }

  .compare-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .content-main .related-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

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

  .element-list dt {
    border-bottom: 0;
    padding-bottom: 4px;
  }

  .element-list dd {
    padding-top: 4px;
  }

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

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 32px 16px 24px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 16px 24px;
  }

  .faq-question {
    font-size: 15.5px;
    padding-right: 34px;
  }

  .faq-question::after {
    top: 22px;
  }

  .faq-item[open] .faq-question::after {
    top: 24px;
  }

  .lightbox-prev {
    left: 8px;
  }

  .lightbox-next {
    right: 8px;
  }

  .error-main {
    padding: 40px 16px 56px;
  }

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

@media (max-width: 480px) {
  .hero-copy h1,
  .page-title {
    font-size: 24px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn-primary,
  .hero-actions .btn-ghost {
    width: 100%;
  }

  .filter-buttons {
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .filter-bar[role="group"] {
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .filter-btn {
    flex: 0 0 auto;
  }

  .step-item,
  .check-item,
  .flow-step {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 4px 12px;
    padding: 14px;
  }

  .step-item .step-num,
  .check-item .check-num,
  .flow-step .step-index {
    width: 32px;
    height: 32px;
    font-size: 13px;
  }

  .error-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .error-actions .btn-primary,
  .error-actions .btn-ghost {
    width: 100%;
  }

  .lightbox-figure {
    max-width: 96vw;
  }

  .lightbox-close {
    top: 10px;
    right: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}