:root {
  --color-primary: #14503f;
  --color-primary-dark: #0d3a2d;
  --color-accent: #c47a1c;
  --color-bg: #f7f8f6;
  --color-surface: #ffffff;
  --color-text: #22282a;
  --color-text-muted: #5c6668;
  --color-border: #dde2df;
  --color-status-available: #2f7d5b;
  --color-status-adjusting: #b8791a;
  --color-status-archived: #7a8285;
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", "Menlo", "Consolas", "Courier New", monospace;
  --width-main: 1120px;
  --width-text: 760px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-card: 0 1px 3px rgba(20, 80, 63, 0.06);
}

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

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

body.site-body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-wrap: break-word;
}

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

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

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

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

p {
  margin: 0;
}

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

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

button {
  font-family: inherit;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--width-main);
  margin: 0 auto;
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0;
  white-space: nowrap;
}

.brand:hover {
  color: var(--color-primary-dark);
  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 {
  display: block;
  padding: 8px 12px;
  font-size: 14.5px;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-link:hover {
  color: var(--color-primary);
  text-decoration: none;
}

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

.nav-desc {
  display: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

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

.site-main {
  display: block;
}

.inner-main {
  max-width: var(--width-main);
  margin: 0 auto;
  padding: 0 32px 64px;
}

.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  margin-top: 48px;
}

.footer-inner {
  max-width: var(--width-main);
  margin: 0 auto;
  padding: 44px 32px 32px;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 2.4fr;
  gap: 40px;
}

.footer-brand-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.footer-brand-desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: 320px;
}

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

.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

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

.footer-list a {
  font-size: 13.5px;
  color: var(--color-text-muted);
}

.footer-list a:hover {
  color: var(--color-primary);
}

.footer-note {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-top: 10px;
}

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

.footer-copy {
  max-width: var(--width-main);
  margin: 0 auto;
  padding: 18px 32px;
  font-size: 12.5px;
  color: var(--color-text-muted);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  font-size: 14.5px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: #ffffff;
}

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

.btn-ghost:hover {
  background-color: rgba(20, 80, 63, 0.06);
  color: var(--color-primary-dark);
}

.text-link,
.link-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.text-link::after,
.link-more::after {
  content: " →";
  font-weight: 400;
}

.link-more {
  display: inline-block;
  margin-top: 14px;
}

.section-title {
  font-size: 22px;
  margin-bottom: 10px;
}

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

.section-lead,
.section-note,
.section-intro,
.section-text {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--color-text-muted);
  max-width: var(--width-text);
}

.section-lead,
.section-intro {
  margin-bottom: 22px;
}

.section-note {
  margin-bottom: 16px;
}

.section-text {
  margin-bottom: 16px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
}

.data-table {
  min-width: 640px;
  font-size: 13.5px;
}

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

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

.data-table th,
.data-table td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.data-table thead th {
  font-weight: 600;
  color: var(--color-text);
  background-color: #f2f4f1;
  white-space: nowrap;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover {
  background-color: #f4f7f4;
}

.cell-no,
.cell-code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.cell-name {
  font-weight: 600;
  color: var(--color-text);
}

.cell-link a,
.row-link {
  font-weight: 600;
  white-space: nowrap;
}

.status {
  display: inline-block;
  padding: 2px 9px;
  font-size: 12.5px;
  border-radius: 999px;
  white-space: nowrap;
}

.status-open,
.status-available {
  color: var(--color-status-available);
  background-color: rgba(47, 125, 91, 0.1);
}

.status-adjust,
.status-adjusting {
  color: var(--color-status-adjusting);
  background-color: rgba(184, 121, 26, 0.12);
}

.status-archived {
  color: var(--color-status-archived);
  background-color: rgba(122, 130, 133, 0.12);
}

.status-tag {
  display: inline-block;
  padding: 2px 9px;
  font-size: 12.5px;
  border-radius: 999px;
}

.col-note {
  margin-top: 12px;
  font-size: 13.5px;
  color: var(--color-text-muted);
}

.media-figure,
.hero-figure,
.guide-figure,
.collection-cover {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

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

.media-caption,
.guide-figure-caption,
.hero-figure figcaption,
.media-figure figcaption {
  padding: 10px 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   pages · index
   ========================================================================== */

.topbar {
  background-color: var(--color-primary-dark);
  color: #e8efeb;
}

.topbar-text,
.topbar-link {
  font-size: 13px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  padding: 8px 32px;
}

.topbar-text {
  margin: 0;
  color: #e8efeb;
}

.topbar-link {
  color: #f0d9b4;
  font-weight: 600;
  white-space: nowrap;
}

.topbar-link:hover {
  color: #ffffff;
}

.home-main {
  display: block;
}

.hero-section {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.hero-inner {
  max-width: var(--width-main);
  margin: 0 auto;
  padding: 48px 32px 44px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: start;
}

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

.hero-eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  padding: 3px 10px;
  font-size: 12.5px;
  color: var(--color-primary);
  background-color: rgba(20, 80, 63, 0.08);
  border-radius: var(--radius-sm);
}

.hero-title {
  font-size: 30px;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-muted);
  max-width: 560px;
  margin-bottom: 24px;
}

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

.hero-aside {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.hero-panel {
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
}

.hero-panel-title {
  font-size: 16px;
  margin-bottom: 12px;
}

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

.structure-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 13.5px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--color-border);
}

.structure-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.structure-key {
  flex: 0 0 auto;
  font-weight: 600;
  color: var(--color-primary);
}

.structure-value {
  color: var(--color-text-muted);
}

.hero-record {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.hero-record-title {
  font-size: 14px;
  margin-bottom: 10px;
  color: var(--color-text-muted);
  font-weight: 600;
}

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

.record-mini-item {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.section {
  padding: 44px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.section:last-of-type {
  border-bottom: none;
}

.check-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 8px;
}

.check-item {
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-sm);
}

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

.step-item {
  position: relative;
  padding: 20px 18px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.step-index {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
}

.step-title {
  font-size: 15.5px;
  margin-bottom: 8px;
}

.step-prep {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.step-link {
  font-size: 13.5px;
  font-weight: 600;
}

.process-columns {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 32px;
  align-items: start;
}

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

.collection-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.collection-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.collection-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card);
}

.card-media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: #eceeeb;
}

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

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

.card-title {
  font-size: 15.5px;
}

.card-meta {
  font-size: 12.5px;
  color: var(--color-accent);
}

.card-text {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.card-link {
  margin-top: auto;
  font-size: 13.5px;
  font-weight: 600;
}

.record-groups {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.record-group {
  padding: 18px 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.record-month {
  font-size: 15px;
  color: var(--color-primary);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

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

.record-item {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  gap: 6px 16px;
  align-items: baseline;
  font-size: 13.5px;
}

.record-date {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--color-text-muted);
}

.record-scope {
  color: var(--color-text);
}

.record-page {
  color: var(--color-text-muted);
  white-space: nowrap;
}

.field-columns {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: start;
}

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

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

.boundary-item {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.boundary-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
}

.index-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.index-card:hover {
  border-color: var(--color-primary);
  background-color: #f2f7f4;
  text-decoration: none;
}

.index-name {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-primary);
}

.index-desc {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--color-text-muted);
}

/* ==========================================================================
   pages · inner shell
   ========================================================================== */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 13px;
  color: var(--color-text-muted);
}

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

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

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

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

.page-header {
  padding: 18px 0 28px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 36px;
}

.page-title {
  font-size: 30px;
  margin-bottom: 10px;
}

.page-description {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--color-text-muted);
  max-width: var(--width-text);
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px) 300px;
  gap: 40px;
  align-items: start;
}

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

.layout-aside {
  min-width: 0;
  position: sticky;
  top: 84px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.section-head {
  margin-bottom: 18px;
}

/* ==========================================================================
   pages · channels
   ========================================================================== */

.channel-overview .channel-table {
  min-width: 720px;
}

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

.field-meaning .field-table {
  min-width: 480px;
}

.diff-table {
  min-width: 600px;
}

.advice-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

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

.advice-title {
  font-size: 15px;
  margin-bottom: 8px;
}

.advice-desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.advice-link {
  font-size: 13.5px;
  font-weight: 600;
}

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

.aside-title {
  font-size: 15px;
  margin-bottom: 12px;
}

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

.status-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--color-text-muted);
}

.aside-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.aside-links a {
  font-size: 13.5px;
  font-weight: 600;
}

.aside-note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

/* ==========================================================================
   pages · collections
   ========================================================================== */

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

.collection-grid .collection-card {
  flex-direction: row;
}

.collection-grid .collection-cover {
  flex: 0 0 42%;
  border: none;
  border-right: 1px solid var(--color-border);
  border-radius: 0;
}

.collection-grid .collection-cover img {
  aspect-ratio: 4 / 3;
}

.collection-body {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  min-width: 0;
}

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

.collection-theme {
  font-size: 12.5px;
  color: var(--color-accent);
}

.collection-desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.collection-enter {
  margin-top: auto;
  font-size: 13.5px;
  font-weight: 600;
}

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

.basis-item {
  padding: 18px 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
}

.basis-name {
  font-size: 15.5px;
  margin-bottom: 8px;
}

.basis-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-muted);
  margin-bottom: 10px;
}

.basis-points {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.basis-points li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.basis-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.order-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  counter-reset: order;
}

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

.order-name {
  font-size: 15px;
  margin-bottom: 8px;
}

.order-text {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.order-link {
  font-size: 13.5px;
  font-weight: 600;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
}

.related-item a {
  display: block;
  padding: 14px 16px;
  font-size: 14px;
  font-weight: 600;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.related-item a:hover {
  border-color: var(--color-primary);
  background-color: #f2f7f4;
  text-decoration: none;
}

/* ==========================================================================
   pages · guide
   ========================================================================== */

.prepare-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

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

.prepare-name {
  font-size: 15px;
  margin-bottom: 8px;
}

.prepare-text {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--color-text-muted);
}

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

.step-track .step-item {
  padding: 20px 18px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
}

.step-track .step-index {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
}

.step-name {
  font-size: 15.5px;
  margin-bottom: 8px;
}

.step-text {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.guide-figure {
  margin: 26px 0;
}

.verify-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
}

.verify-table {
  min-width: 620px;
  font-size: 13.5px;
}

.verify-caption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: left;
}

.verify-table th,
.verify-table td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.verify-table thead th {
  font-weight: 600;
  background-color: #f2f4f1;
  white-space: nowrap;
}

.verify-table tbody tr:last-child td {
  border-bottom: none;
}

.mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--color-text-muted);
}

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

.pitfall-item {
  padding: 16px 18px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-sm);
}

.pitfall-name {
  font-size: 15px;
  margin-bottom: 8px;
}

.pitfall-text {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--color-text-muted);
}

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

.next-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.next-card:hover {
  border-color: var(--color-primary);
  background-color: #f2f7f4;
  text-decoration: none;
}

.next-name {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-primary);
}

.next-desc {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--color-text-muted);
}

/* ==========================================================================
   pages · faq
   ========================================================================== */

.faq-media {
  max-width: 860px;
  margin-bottom: 36px;
}

.faq-media .section-title {
  margin-bottom: 14px;
}

.faq-group {
  max-width: 860px;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
}

.faq-group:last-of-type {
  border-bottom: none;
}

.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
}

.faq-question {
  padding: 14px 18px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 44px;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  font-weight: 400;
  color: var(--color-accent);
}

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

.faq-item[open] .faq-question {
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-border);
}

.faq-answer {
  padding: 14px 18px 16px;
}

.faq-answer p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.faq-links {
  max-width: 860px;
  padding-top: 32px;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
}

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

.link-card a {
  display: block;
  font-size: 14.5px;
  font-weight: 600;
  margin-bottom: 6px;
}

.link-desc {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--color-text-muted);
}

/* ==========================================================================
   pages · records
   ========================================================================== */

.records-intro {
  max-width: 1000px;
}

.section-body {
  display: grid;
  grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.records-figure {
  margin: 0;
}

.records-timeline {
  max-width: 1000px;
}

.records-timeline .record-group {
  margin-bottom: 20px;
}

.records-timeline .record-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.records-timeline .record-item {
  padding: 14px 16px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.record-field {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  font-size: 13px;
  margin-bottom: 6px;
}

.record-label {
  color: var(--color-text-muted);
  min-width: 56px;
}

.record-value {
  font-weight: 600;
  color: var(--color-text);
}

.record-desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.note-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
}

.note-item {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.note-key {
  font-weight: 600;
  color: var(--color-primary);
  margin-right: 6px;
}

.records-pages {
  max-width: 1000px;
}

.page-index-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.page-index-item {
  padding: 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.page-index-link {
  display: block;
  font-size: 14.5px;
  font-weight: 600;
  margin-bottom: 6px;
}

.page-index-desc {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--color-text-muted);
}

.records-check {
  max-width: 1000px;
}

.records-check .check-list {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-bottom: 18px;
}

.records-check .check-item {
  border-left-color: var(--color-primary);
}

.check-title {
  font-size: 15px;
  margin-bottom: 8px;
}

.check-desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

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

.error-main {
  max-width: var(--width-main);
  margin: 0 auto;
  padding: 64px 32px 80px;
}

.error-panel {
  max-width: 640px;
}

.error-title {
  font-size: 30px;
  margin-bottom: 14px;
}

.error-text {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 28px;
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.error-links a {
  font-size: 14px;
  font-weight: 600;
}

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

@media (max-width: 900px) {
  .header-inner {
    padding: 0 18px;
    height: 60px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 16px rgba(20, 80, 63, 0.08);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
  }

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

  .nav-link {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-height: 48px;
    justify-content: center;
    padding: 8px 18px;
    border-bottom: none;
    border-left: 3px solid transparent;
  }

  .nav-link.is-current {
    border-bottom-color: transparent;
    border-left-color: var(--color-primary);
    background-color: #f2f7f4;
  }

  .nav-desc {
    display: block;
    font-size: 12px;
    font-weight: 400;
    color: var(--color-text-muted);
  }

  .hero-inner {
    grid-template-columns: 1fr;
    padding: 36px 18px 32px;
    gap: 28px;
  }

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

  .section-inner {
    padding: 0 18px;
  }

  .section {
    padding: 34px 0;
  }

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

  .process-columns,
  .field-columns {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .index-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .inner-main {
    padding: 0 18px 48px;
  }

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

  .layout-aside {
    position: static;
  }

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

  .collection-grid {
    grid-template-columns: 1fr;
  }

  .section-body {
    grid-template-columns: 1fr;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 36px 18px 24px;
  }

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

  .footer-copy {
    padding: 16px 18px;
  }

  .error-main {
    padding: 44px 18px 64px;
  }

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

@media (max-width: 600px) {
  .topbar {
    padding: 8px 18px;
  }

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

  .step-list,
  .step-track {
    grid-template-columns: 1fr;
  }

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

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

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

  .collection-grid .collection-card {
    flex-direction: column;
  }

  .collection-grid .collection-cover {
    flex: none;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }

  .record-item {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .record-page {
    white-space: normal;
  }

  .footer-columns {
    grid-template-columns: 1fr;
  }

  .page-index-grid {
    grid-template-columns: 1fr;
  }

  .link-grid,
  .related-list,
  .next-grid,
  .advice-list,
  .prepare-list,
  .order-list,
  .check-list,
  .collection-cards {
    grid-template-columns: 1fr;
  }
}

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

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