:root {
  --bg-page: #faf6f0;
  --bg-surface: #fffdfa;
  --bg-sunken: #f4ece1;
  --ink-title: #3a2c22;
  --ink-body: #4a423b;
  --ink-muted: #857567;
  --accent: #b5642a;
  --accent-dark: #8f4c1d;
  --line: #e6dbcd;
  --line-strong: #d3c2ae;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow-soft: 0 1px 2px rgba(58, 44, 34, 0.05);
  --shadow-hover: 0 6px 16px rgba(58, 44, 34, 0.1);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", "Menlo", "Consolas", "Liberation Mono", monospace;
  --wrap: 1160px;
  --gap: 24px;
}

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

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

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

body.site-body {
  margin: 0;
  padding: 0;
  background: var(--bg-page);
  color: var(--ink-body);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink-title);
  font-weight: 600;
  line-height: 1.4;
}

p {
  margin: 0;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.18s ease;
}

a:hover,
a:focus-visible {
  color: var(--accent-dark);
  text-decoration: underline;
}

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

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

figure {
  margin: 0;
}

figcaption {
  margin-top: 10px;
  color: var(--ink-muted);
  font-size: 14px;
  line-height: 1.7;
}

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

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

.top-notice {
  background: var(--ink-title);
  color: #f3e9dd;
  font-size: 14px;
  line-height: 1.6;
}

.top-notice p {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 9px 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 28px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px 24px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  color: var(--ink-title);
  font-weight: 600;
}

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

.brand-mark {
  font-size: 20px;
  letter-spacing: 0.02em;
}

.brand-slogan {
  color: var(--ink-muted);
  font-size: 13px;
  font-weight: 400;
}

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

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

.nav-list a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--ink-body);
  font-size: 15px;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  background: var(--bg-sunken);
  color: var(--accent-dark);
  text-decoration: none;
}

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

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  margin-left: auto;
  padding: 8px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  color: var(--ink-title);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}

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

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

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

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

.site-main {
  display: block;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 56px;
}

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

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

.section-head {
  max-width: 760px;
  margin-bottom: 24px;
}

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

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

.section-intro,
.section-lead {
  max-width: 780px;
}

.section-note,
.block-more {
  margin-top: 18px;
  font-size: 15px;
}

.section-note a,
.block-more a {
  font-weight: 600;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
}

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

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff8f2;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff8f2;
}

.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink-title);
}

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

.btn-plain {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--ink-title);
  font-weight: 600;
}

.btn-plain:hover,
.btn-plain:focus-visible {
  border-color: var(--accent);
  color: var(--accent-dark);
  text-decoration: none;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 18px 0 0;
  color: var(--ink-muted);
  font-size: 14px;
}

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

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

.page-header {
  padding: 14px 0 26px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 30px;
  line-height: 1.35;
}

.page-description {
  max-width: 820px;
  margin-top: 12px;
  color: var(--ink-body);
  font-size: 16px;
}

.block-title {
  font-size: 18px;
}

.block-desc {
  margin-top: 8px;
  font-size: 15px;
}

.aside-title {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  letter-spacing: 0.04em;
}

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

/* --- 表格 --- */

.field-table-wrap {
  overflow-x: auto;
}

.field-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 15px;
}

.field-table-caption {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 14px;
  text-align: left;
}

.field-table th,
.field-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.field-table thead th {
  background: var(--bg-sunken);
  color: var(--ink-title);
  font-weight: 600;
  white-space: nowrap;
}

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

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

/* --- FAQ --- */

.faq-list {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

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

.faq-question {
  position: relative;
  padding: 14px 46px 14px 18px;
  color: var(--ink-title);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 18px;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 20px;
  line-height: 1;
}

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

.faq-answer {
  padding: 0 18px 16px;
  border-top: 1px solid var(--line);
  font-size: 15px;
}

.faq-answer p {
  margin-top: 14px;
}

/* --- 图片 --- */

.hero-media img,
.section-media img,
.intro-figure img,
.section-figure img,
.check-figure img,
.archive-intro-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-sunken);
}

/* ============ footer ============ */

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

.footer-inner {
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(4, minmax(0, 1fr));
  gap: 28px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 40px 24px 28px;
}

.footer-title {
  font-size: 18px;
}

.footer-desc {
  margin-top: 10px;
  color: var(--ink-muted);
  font-size: 14px;
}

.footer-col-title {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-title);
  font-size: 15px;
}

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

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

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

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

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

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

.footer-copy {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px 24px;
  color: var(--ink-muted);
  font-size: 13px;
}

/* ============ page: index ============ */

.hero {
  padding: 44px 0 40px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(260px, 1fr);
  gap: 40px;
  align-items: start;
}

.hero-kicker {
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.hero-title {
  margin-top: 10px;
  font-size: 30px;
  line-height: 1.35;
}

.hero-summary {
  max-width: 640px;
  margin-top: 14px;
  font-size: 16px;
}

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

.hero-toc {
  padding: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.toc-title {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
}

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

.toc-list li + li {
  margin-top: 10px;
}

.toc-list a {
  display: block;
  padding-left: 14px;
  border-left: 2px solid var(--line-strong);
  color: var(--ink-body);
  font-size: 15px;
  line-height: 1.6;
}

.toc-list a:hover,
.toc-list a:focus-visible {
  border-left-color: var(--accent);
  color: var(--accent-dark);
  text-decoration: none;
}

.hero-media {
  margin-top: 32px;
}

.scene-layout {
  display: grid;
  grid-template-columns: minmax(190px, 1fr) minmax(0, 2.1fr) minmax(210px, 1.15fr);
  gap: var(--gap);
  align-items: start;
}

.scene-tree,
.scene-side {
  padding: 18px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

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

.tree-list a {
  display: block;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  color: var(--ink-body);
  font-size: 15px;
}

.tree-list a:hover,
.tree-list a:focus-visible {
  background: var(--bg-sunken);
  color: var(--accent-dark);
  text-decoration: none;
}

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

.scene-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.scene-item {
  padding: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.scene-item:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-hover);
}

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

.scene-note {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 14px;
}

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

.side-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 14px;
}

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

.side-date {
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 13px;
}

.side-more {
  margin-top: 14px;
  font-size: 14px;
  font-weight: 600;
}

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

.field-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: var(--gap);
  align-items: start;
}

.field-layout .field-table-wrap {
  min-width: 0;
}

.field-layout .field-table {
  font-size: 14px;
}

.check-points {
  padding: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.check-list {
  margin-top: 14px;
}

.check-item + .check-item {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

.check-name {
  font-size: 15px;
}

.check-note {
  margin-top: 6px;
  color: var(--ink-muted);
  font-size: 14px;
}

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

.archive-group {
  padding: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.archive-month {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
}

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

.archive-item {
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

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

.archive-date {
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 13px;
}

.archive-type {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 8px;
  background: var(--bg-sunken);
  border-radius: 999px;
  color: var(--accent-dark);
  font-size: 12px;
}

.archive-note {
  margin-top: 6px;
  font-size: 14px;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.channel-item {
  padding: 18px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.channel-item:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-hover);
}

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

.channel-name a {
  color: var(--ink-title);
}

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

.channel-note {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 14px;
}

/* ============ page: scenario-index ============ */

.intro-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(240px, 1fr);
  gap: var(--gap);
  align-items: start;
}

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

.intro-main p + p {
  margin-top: 12px;
}

.intro-figure {
  margin-top: 22px;
}

.intro-side {
  padding: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.filter-list {
  margin-top: 14px;
}

.filter-item {
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
}

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

.filter-name {
  display: block;
  color: var(--ink-title);
  font-weight: 600;
  font-size: 15px;
}

.filter-desc {
  display: block;
  margin-top: 4px;
  color: var(--ink-muted);
  font-size: 14px;
}

.entry-list {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.entry-card {
  padding: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.entry-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-hover);
}

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

.entry-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 12px;
}

.entry-fields .field-label {
  color: var(--ink-muted);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.entry-fields .field-value {
  margin: 0 0 0 6px;
  color: var(--ink-title);
  font-size: 14px;
}

.entry-note {
  margin-top: 12px;
  font-size: 15px;
}

.entry-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 15px;
  font-weight: 600;
}

.more-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.more-item {
  padding: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.more-item a {
  font-weight: 600;
}

/* ============ page: field-guide ============ */

.section-figure {
  margin-top: 22px;
}

.section-field-table .field-table-wrap {
  margin-top: 22px;
}

.section-field-table .field-table {
  min-width: 620px;
}

.scope-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 22px;
}

.scope-col {
  padding: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.scope-col-title {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
}

.scope-list {
  margin-top: 14px;
}

.scope-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
}

.scope-list li + li {
  margin-top: 10px;
}

.scope-list li::before {
  content: "";
  position: absolute;
  top: 11px;
  left: 2px;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.scope-col-out .scope-list li::before {
  background: var(--line-strong);
}

.reading-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 22px;
  counter-reset: reading;
}

.reading-step {
  padding: 18px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  counter-increment: reading;
}

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

.reading-step-title::before {
  content: counter(reading, decimal-leading-zero);
  display: block;
  margin-bottom: 6px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.reading-step-desc {
  margin-top: 8px;
  color: var(--ink-muted);
  font-size: 14px;
}

/* ============ page: check-method ============ */

.step-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  margin-top: 22px;
  counter-reset: checkstep;
}

.step-item {
  padding: 18px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  counter-increment: checkstep;
}

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

.step-name::before {
  content: "步骤 " counter(checkstep);
  display: block;
  margin-bottom: 6px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.step-point {
  margin-top: 10px;
  font-size: 15px;
}

.step-action {
  margin-top: 10px;
  font-size: 14px;
}

.check-figure {
  margin-top: 26px;
}

.related-links {
  padding: 40px 0 0;
  border-top: 1px solid var(--line);
}

.related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.related-item {
  padding: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-item a {
  font-weight: 600;
}

/* ============ page: archive-log ============ */

.archive-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(260px, 1fr);
  gap: var(--gap);
  align-items: start;
  padding: 34px 0 6px;
}

.archive-intro-text {
  min-width: 0;
}

.archive-intro-text p {
  margin-top: 12px;
  font-size: 15px;
}

.archive-intro-media img {
  aspect-ratio: 4 / 3;
}

.archive-months {
  padding: 34px 0 8px;
}

.month-group {
  margin-top: 22px;
  padding: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.month-heading {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
}

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

.log-item {
  display: grid;
  grid-template-columns: 104px 96px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
}

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

.log-date {
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 13px;
}

.log-type {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--bg-sunken);
  color: var(--ink-body);
  font-size: 12px;
  text-align: center;
}

.log-type-new {
  background: #f6e3d2;
  color: var(--accent-dark);
}

.log-type-field {
  background: #ece3d5;
  color: #6f5a41;
}

.log-type-category {
  background: #e4e1d4;
  color: #5c5a45;
}

.log-text {
  font-size: 15px;
}

.log-reading {
  padding: 34px 0 8px;
}

.log-reading-cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 22px;
}

.log-reading-col {
  padding: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.col-title {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
}

.log-field-list {
  margin: 14px 0 0;
}

.log-field-name {
  margin-top: 12px;
  color: var(--ink-title);
  font-weight: 600;
  font-size: 15px;
}

.log-field-name:first-child {
  margin-top: 0;
}

.log-field-desc {
  margin: 4px 0 0;
  color: var(--ink-muted);
  font-size: 14px;
}

.log-field-desc a {
  font-weight: 600;
}

/* ============ page: 404 ============ */

.error-main {
  padding-top: 44px;
}

.error-panel {
  padding: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.error-code {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.14em;
}

.error-panel h1 {
  margin-top: 10px;
  font-size: 30px;
}

.error-lead {
  max-width: 640px;
  margin-top: 14px;
  font-size: 16px;
}

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

.error-guide {
  margin-top: 30px;
  padding: 28px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.error-guide h2 {
  font-size: 20px;
}

.error-guide-desc {
  margin-top: 10px;
  font-size: 15px;
}

.error-guide-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.error-guide-list li {
  padding: 14px 16px;
  background: var(--bg-sunken);
  border-radius: var(--radius-sm);
  font-size: 15px;
}

.error-guide-list a {
  font-weight: 600;
}

.error-guide-list span {
  display: block;
  margin-top: 4px;
  color: var(--ink-muted);
  font-size: 14px;
}

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

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

@media (max-width: 960px) {
  .header-inner {
    padding: 12px 20px;
  }

  .nav-toggle {
    display: inline-flex;
  }

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 4px;
    border-top: 1px solid var(--line);
  }

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

  .nav-list a {
    min-height: 44px;
    padding: 12px 10px;
    font-size: 16px;
  }

  .site-main {
    padding: 0 20px 48px;
  }

  .hero-inner,
  .scene-layout,
  .field-layout,
  .intro-columns,
  .archive-intro {
    grid-template-columns: minmax(0, 1fr);
  }

  .scene-main {
    order: -1;
  }

  .archive-groups,
  .channel-grid,
  .more-list,
  .related-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 32px 20px 24px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-copy {
    padding: 16px 20px;
  }
}

@media (max-width: 640px) {
  body.site-body {
    font-size: 15px;
  }

  .top-notice p {
    padding: 9px 16px;
  }

  .header-inner {
    padding: 12px 16px;
  }

  .brand {
    flex-direction: column;
    gap: 2px;
  }

  .brand-mark {
    font-size: 18px;
  }

  .site-main {
    padding: 0 16px 40px;
  }

  .page-title,
  .hero-title,
  .error-panel h1 {
    font-size: 24px;
  }

  .section-title {
    font-size: 19px;
  }

  .hero {
    padding: 30px 0 28px;
  }

  .section {
    padding: 30px 0;
  }

  .scene-list,
  .reading-steps,
  .step-list,
  .scope-columns,
  .log-reading-cols,
  .archive-groups,
  .channel-grid,
  .more-list,
  .related-list,
  .error-guide-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .log-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

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

  .field-table {
    font-size: 14px;
  }

  .field-table th,
  .field-table td {
    padding: 10px 12px;
  }

  .entry-card,
  .scene-item,
  .channel-item,
  .archive-group,
  .month-group,
  .scope-col,
  .reading-step,
  .step-item,
  .intro-side,
  .check-points,
  .error-panel,
  .error-guide {
    padding: 16px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    padding: 28px 16px 20px;
  }

  .footer-copy {
    padding: 14px 16px;
  }
}