/* ==========================================================================
   樱花图片 qutaxiang.cn — 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base
   -------------------------------------------------------------------------- */

:root {
  --c-ink: #2f3b45;
  --c-ink-soft: #46545f;
  --c-mid: #6b7a86;
  --c-line: #dcdcd6;
  --c-line-soft: #e8e7e2;
  --c-accent: #c2554f;
  --c-accent-deep: #a8403b;
  --c-bg: #f7f6f4;
  --c-card: #ffffff;
  --c-tint: #f1efec;
  --radius: 6px;
  --radius-sm: 4px;
  --wrap: 1120px;
  --wrap-inner: 1000px;
  --shadow-card: 0 1px 2px rgba(47, 59, 69, 0.06);
  --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: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

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

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

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

p {
  margin: 0;
}

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

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

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
}

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

figure {
  margin: 0;
}

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

th,
td {
  text-align: left;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 60;
  padding: 10px 16px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  color: var(--c-ink);
  font-size: 14px;
  transition: top 0.18s ease;
}

.skip-link:focus {
  top: 12px;
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   layout — 全站骨架
   -------------------------------------------------------------------------- */

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-header {
  position: relative;
  z-index: 30;
  background: var(--c-card);
  border-bottom: 1px solid var(--c-line);
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--c-ink);
  text-decoration: none;
}

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

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: inset 0 0 0 6px rgba(255, 255, 255, 0.55);
}

.brand-name {
  font-size: 19px;
  font-weight: 700;
}

.site-nav {
  flex: 1 1 auto;
}

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

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  color: var(--c-ink-soft);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
}

.nav-link:hover,
.nav-link:focus-visible {
  background: var(--c-tint);
  color: var(--c-ink);
  text-decoration: none;
}

.nav-link.is-current {
  color: var(--c-accent);
  font-weight: 700;
  box-shadow: inset 0 -2px 0 var(--c-accent);
}

.nav-toggle {
  display: none;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-card);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--c-ink);
}

.subnav-bar {
  background: var(--c-tint);
  border-bottom: 1px solid var(--c-line);
}

.subnav-list {
  display: flex;
  align-items: center;
  gap: 6px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 6px 24px;
}

.subnav-link {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--c-mid);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
}

.subnav-link:hover,
.subnav-link:focus-visible {
  background: var(--c-card);
  color: var(--c-ink);
  text-decoration: none;
}

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

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

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

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

.breadcrumb a {
  color: var(--c-mid);
  text-decoration: none;
}

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

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

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

.page-header {
  padding: 16px 0 26px;
  border-bottom: 1px solid var(--c-line);
}

.page-title {
  font-size: 30px;
  line-height: 1.3;
}

.page-description {
  max-width: 780px;
  margin-top: 12px;
  color: var(--c-mid);
  font-size: 15px;
}

.container {
  width: 100%;
}

.section {
  padding: 40px 0 0;
}

.section-head {
  margin-bottom: 20px;
}

.section-title {
  font-size: 23px;
  line-height: 1.4;
}

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

.section-note,
.section-foot,
.fields-note {
  margin-top: 16px;
  color: var(--c-mid);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   components — 通用组件
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--c-accent-deep);
  color: #ffffff;
  text-decoration: none;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.field-table,
.data-table {
  min-width: 560px;
  font-size: 14px;
}

.field-table caption,
.data-table caption,
.table-caption,
.field-table-caption {
  padding: 14px 18px 0;
  color: var(--c-mid);
  font-size: 13px;
  text-align: left;
}

.field-table thead th,
.data-table thead th {
  padding: 12px 18px;
  background: var(--c-tint);
  border-bottom: 1px solid var(--c-line);
  color: var(--c-ink);
  font-size: 13px;
  font-weight: 700;
}

.field-table tbody th,
.data-table tbody th,
.field-table tbody td,
.data-table tbody td {
  padding: 12px 18px;
  border-bottom: 1px solid var(--c-line-soft);
  color: var(--c-ink-soft);
  vertical-align: top;
}

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

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

.code-inline {
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  background: var(--c-tint);
  color: var(--c-ink);
  font-family: var(--font-mono);
  font-size: 13px;
}

/* FAQ 展开组件 */
.faq-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.faq-item {
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 12px 18px;
  color: var(--c-ink);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--c-accent);
  border-bottom: 2px solid var(--c-accent);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::before {
  transform: rotate(-135deg);
}

.faq-answer {
  padding: 0 18px 16px 36px;
  color: var(--c-ink-soft);
  font-size: 14px;
}

.faq-answer p + p {
  margin-top: 10px;
}

/* 页脚 */
.site-footer {
  margin-top: auto;
  background: var(--c-ink);
  color: #d7dbdd;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(0, 2fr);
  gap: 32px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 40px 24px 28px;
}

.footer-brand-name {
  color: #ffffff;
  font-size: 17px;
  font-weight: 700;
}

.footer-brand-desc {
  margin-top: 10px;
  max-width: 320px;
  color: #a9b2b8;
  font-size: 13px;
  line-height: 1.7;
}

.footer-groups {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.footer-group-title {
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
}

.footer-list {
  margin-top: 10px;
  display: grid;
  gap: 6px;
}

.footer-list a {
  display: inline-block;
  padding: 4px 0;
  color: #a9b2b8;
  font-size: 13px;
  text-decoration: none;
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: #ffffff;
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px 24px 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  color: #8f9aa1;
  font-size: 12px;
}

.footer-note {
  flex: 1 1 420px;
}

.footer-copy {
  flex: 0 0 auto;
}

.footer-top {
  flex: 0 0 auto;
  color: #d7dbdd;
  text-decoration: none;
}

.footer-top:hover,
.footer-top:focus-visible {
  color: #ffffff;
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   pages — 首页
   -------------------------------------------------------------------------- */

.hero {
  padding: 40px 0 8px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

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

.hero-eyebrow {
  color: var(--c-accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero-title {
  margin-top: 10px;
  font-size: 34px;
  line-height: 1.3;
}

.hero-desc {
  max-width: 560px;
  margin-top: 14px;
  color: var(--c-ink-soft);
  font-size: 16px;
}

.hero-catalog {
  margin-top: 26px;
  padding: 18px 20px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.hero-catalog-title {
  color: var(--c-mid);
  font-size: 13px;
  font-weight: 700;
}

.hero-catalog-list {
  margin-top: 10px;
  display: grid;
  gap: 2px;
}

.hero-catalog-list li {
  border-bottom: 1px solid var(--c-line-soft);
}

.hero-catalog-list li:last-child {
  border-bottom: 0;
}

.hero-catalog-list a {
  display: block;
  padding: 9px 0;
  color: var(--c-ink-soft);
  font-size: 14px;
  text-decoration: none;
}

.hero-catalog-list a:hover,
.hero-catalog-list a:focus-visible {
  color: var(--c-accent);
  text-decoration: none;
}

.hero-visual {
  min-width: 0;
  display: grid;
  gap: 18px;
}

.hero-figure {
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.hero-figure figcaption {
  padding: 12px 16px;
  color: var(--c-mid);
  font-size: 13px;
}

.hero-entry {
  padding: 18px 20px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-accent);
  border-radius: var(--radius);
}

.hero-entry-title {
  color: var(--c-ink);
  font-size: 15px;
  font-weight: 700;
}

.hero-entry-desc {
  margin-top: 8px;
  color: var(--c-mid);
  font-size: 14px;
}

.hero-entry .btn {
  margin-top: 14px;
}

/* 分类索引目录（首页） */
.catalog-list {
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.catalog-row {
  display: grid;
  grid-template-columns: minmax(180px, 0.9fr) minmax(0, 2fr) auto;
  gap: 20px;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--c-line-soft);
  transition: background 0.16s ease;
}

.catalog-row:last-child {
  border-bottom: 0;
}

.catalog-row:hover,
.catalog-row:focus-within {
  background: var(--c-tint);
}

.catalog-name a {
  display: inline-block;
  color: var(--c-ink);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
}

.catalog-name a:hover,
.catalog-name a:focus-visible {
  color: var(--c-accent);
  text-decoration: underline;
}

.catalog-usage {
  color: var(--c-mid);
  font-size: 14px;
}

.catalog-go {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  color: var(--c-accent);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.catalog-go::after {
  content: "→";
  margin-left: 6px;
  transition: transform 0.16s ease;
}

.catalog-row:hover .catalog-go::after {
  transform: translateX(3px);
}

.catalog-go:hover,
.catalog-go:focus-visible {
  color: var(--c-accent-deep);
  text-decoration: none;
}

/* 推荐资源条目（首页） */
.entry-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.entry-card {
  display: flex;
  flex-direction: column;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

.entry-card:hover,
.entry-card:focus-within {
  border-color: var(--c-accent);
  box-shadow: 0 2px 10px rgba(47, 59, 69, 0.1);
}

.entry-figure {
  border-bottom: 1px solid var(--c-line-soft);
}

.entry-figure img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.entry-body {
  flex: 1 1 auto;
  padding: 16px 18px 18px;
}

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

.entry-name a {
  color: var(--c-ink);
  text-decoration: none;
}

.entry-name a:hover,
.entry-name a:focus-visible {
  color: var(--c-accent);
  text-decoration: underline;
}

.entry-desc {
  margin-top: 8px;
  color: var(--c-mid);
  font-size: 14px;
}

.entry-fields,
.entry-meta {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--c-line);
  font-size: 13px;
}

.entry-fields dt,
.entry-meta dt {
  color: var(--c-mid);
  white-space: nowrap;
}

.entry-fields dd,
.entry-meta dd {
  margin: 0;
  color: var(--c-ink-soft);
}

/* 使用路径三步概览（首页） */
.path-list {
  display: grid;
  gap: 12px;
}

.path-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 20px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.path-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--c-accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
}

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

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

.path-desc {
  margin-top: 6px;
  color: var(--c-mid);
  font-size: 14px;
}

/* 版本记录（首页） */
.log-list {
  display: grid;
  gap: 0;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.log-item {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 20px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--c-line-soft);
}

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

.log-date {
  color: var(--c-mid);
  font-size: 13px;
}

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

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

.log-desc {
  margin-top: 6px;
  color: var(--c-mid);
  font-size: 14px;
}

.feedback-note {
  margin-top: 18px;
  padding: 16px 20px;
  background: var(--c-tint);
  border-radius: var(--radius);
  color: var(--c-ink-soft);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   pages — 资源分类
   -------------------------------------------------------------------------- */

.overview-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.overview-item {
  padding: 18px 20px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

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

.overview-basis {
  margin-top: 8px;
  color: var(--c-ink-soft);
  font-size: 14px;
}

.overview-scene {
  margin-top: 6px;
  color: var(--c-mid);
  font-size: 14px;
}

.overview-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 6px;
  color: var(--c-accent);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.overview-link:hover,
.overview-link:focus-visible {
  color: var(--c-accent-deep);
  text-decoration: underline;
}

.detail-item {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(0, 1.15fr);
  gap: 26px;
  align-items: start;
  padding: 22px 0;
  border-bottom: 1px solid var(--c-line);
}

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

.detail-figure {
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.detail-caption {
  padding: 10px 14px;
  color: var(--c-mid);
  font-size: 13px;
}

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

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

.detail-text {
  margin-top: 10px;
  color: var(--c-ink-soft);
  font-size: 15px;
}

.detail-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 6px;
  color: var(--c-accent);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.detail-link:hover,
.detail-link:focus-visible {
  color: var(--c-accent-deep);
  text-decoration: underline;
}

.record-list {
  display: grid;
  gap: 0;
  margin-top: 18px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.record-item {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 6px 20px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--c-line-soft);
}

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

.record-date {
  grid-row: span 2;
  color: var(--c-mid);
  font-size: 13px;
}

.record-scope {
  color: var(--c-ink);
  font-size: 15px;
  font-weight: 600;
}

.record-text {
  color: var(--c-mid);
  font-size: 14px;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.related-item {
  padding: 16px 18px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.related-link {
  color: var(--c-ink);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}

.related-link:hover,
.related-link:focus-visible {
  color: var(--c-accent);
  text-decoration: underline;
}

.related-text {
  margin-top: 6px;
  color: var(--c-mid);
  font-size: 14px;
}

/* 数据表内的字段名单元格 */
.data-table .cell-name,
.field-table .cell-name {
  color: var(--c-ink);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   pages — 推荐资源
   -------------------------------------------------------------------------- */

.entry-list-section {
  padding-top: 40px;
}

.entry-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 18px;
}

.entry-list .entry-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto 1fr;
}

.entry-media {
  border-bottom: 1px solid var(--c-line-soft);
}

.entry-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.usage-section {
  padding-top: 40px;
}

.usage-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.usage-item {
  padding: 18px 20px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-accent);
  border-radius: var(--radius);
}

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

.usage-desc {
  margin-top: 8px;
  color: var(--c-mid);
  font-size: 14px;
}

.version-section {
  padding-top: 40px;
}

.version-list {
  display: grid;
  gap: 0;
  margin-top: 18px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.version-item {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 6px 20px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--c-line-soft);
}

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

.version-date {
  grid-row: span 2;
  color: var(--c-mid);
  font-size: 13px;
}

.version-scope {
  color: var(--c-ink);
  font-size: 15px;
  font-weight: 600;
}

.version-desc {
  color: var(--c-mid);
  font-size: 14px;
}

.fields-section {
  padding-top: 40px;
}

.back-section {
  padding-top: 40px;
}

.back-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.back-item {
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.back-item a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 16px;
  color: var(--c-ink-soft);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.back-item a:hover,
.back-item a:focus-visible {
  color: var(--c-accent);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   pages — 使用教程
   -------------------------------------------------------------------------- */

.step-index-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.step-index-item {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.step-index-num {
  color: var(--c-accent);
  font-size: 13px;
  font-weight: 700;
}

.step-index-link {
  color: var(--c-ink);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
}

.step-index-link:hover,
.step-index-link:focus-visible {
  color: var(--c-accent);
  text-decoration: underline;
}

.step-index-desc {
  color: var(--c-mid);
  font-size: 14px;
}

.step-list {
  display: grid;
  gap: 14px;
  margin-top: 18px;
  counter-reset: step;
}

.step-list .step-item {
  position: relative;
  padding: 18px 20px 18px 60px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  counter-increment: step;
}

.step-list .step-item::before {
  content: counter(step);
  position: absolute;
  left: 20px;
  top: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--c-tint);
  color: var(--c-ink);
  font-size: 13px;
  font-weight: 700;
}

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

.step-list .step-desc {
  margin-top: 8px;
  color: var(--c-ink-soft);
  font-size: 15px;
}

.step-list .step-check {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--c-line);
  color: var(--c-mid);
  font-size: 13px;
}

.section-crop .crop-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(240px, 0.75fr);
  gap: 26px;
  align-items: start;
  margin-top: 4px;
}

.crop-steps {
  min-width: 0;
}

.crop-figure,
.format-figure {
  margin-top: 18px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.section-crop .crop-figure {
  margin-top: 18px;
}

.crop-figure img,
.format-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.figure-caption {
  padding: 10px 14px;
  color: var(--c-mid);
  font-size: 13px;
}

.section-license-entry .section-intro {
  margin-top: 12px;
}

.section-download,
.section-format,
.section-faq,
.section-steps-overview {
  padding-top: 40px;
}

/* --------------------------------------------------------------------------
   pages — 许可说明
   -------------------------------------------------------------------------- */

.scope-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.scope-item {
  padding: 18px 20px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

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

.scope-desc {
  margin-top: 8px;
  color: var(--c-ink-soft);
  font-size: 14px;
}

.scope-figure {
  margin-top: 20px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.scope-figure figcaption {
  padding: 10px 14px;
  color: var(--c-mid);
  font-size: 13px;
}

.section-check {
  padding-top: 40px;
}

.check-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.check-item {
  padding: 16px 18px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-mid);
  border-radius: var(--radius);
}

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

.check-desc {
  margin-top: 8px;
  color: var(--c-mid);
  font-size: 14px;
}

.section-view {
  padding-top: 40px;
}

.section-view .field-table {
  margin-top: 18px;
}

.section-feedback {
  padding-top: 40px;
}

.feedback-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
  counter-reset: feedback;
}

.feedback-step {
  position: relative;
  padding: 18px 20px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  counter-increment: feedback;
}

.feedback-step-name {
  font-size: 15px;
}

.feedback-step-name::before {
  content: counter(feedback) ". ";
  color: var(--c-accent);
  font-weight: 700;
}

.feedback-step-desc {
  margin-top: 8px;
  color: var(--c-mid);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   pages — 404
   -------------------------------------------------------------------------- */

.site-error .error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: var(--wrap-inner);
  margin: 0 auto;
  padding: 64px 24px 72px;
}

.error-panel {
  width: 100%;
  max-width: 640px;
  padding: 32px 32px 36px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  text-align: left;
}

.error-title {
  font-size: 28px;
}

.error-desc {
  margin-top: 12px;
  color: var(--c-mid);
  font-size: 15px;
}

.error-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.error-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  background: var(--c-tint);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  color: var(--c-ink);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

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

.error-action.primary {
  background: var(--c-accent);
  border-color: var(--c-accent);
  color: #ffffff;
}

.error-action.primary:hover,
.error-action.primary:focus-visible {
  background: var(--c-accent-deep);
  border-color: var(--c-accent-deep);
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
    padding: 12px 18px;
  }

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

  .site-nav {
    flex: 1 1 100%;
    order: 3;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 8px 0 4px;
    border-top: 1px solid var(--c-line);
  }

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

  .nav-link {
    min-height: 48px;
    padding: 0 6px;
    border-radius: var(--radius-sm);
  }

  .nav-link.is-current {
    box-shadow: inset 3px 0 0 var(--c-accent);
    padding-left: 12px;
  }

  .subnav-list {
    padding: 6px 18px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .home-main,
  .inner-main {
    padding: 0 18px 44px;
  }

  .hero {
    padding-top: 28px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .hero-title {
    font-size: 28px;
  }

  .entry-grid,
  .entry-list,
  .overview-list,
  .usage-list,
  .scope-grid,
  .check-list,
  .related-list,
  .step-index-list,
  .feedback-steps,
  .back-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section-crop .crop-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
    padding: 32px 18px 24px;
  }

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

  .footer-bottom {
    padding: 16px 18px 24px;
  }
}

@media (max-width: 600px) {
  body {
    font-size: 15px;
  }

  .page-header {
    padding: 14px 0 20px;
  }

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

  .section {
    padding-top: 32px;
  }

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

  .hero-title {
    font-size: 25px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .hero-catalog {
    padding: 16px;
  }

  .catalog-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 14px 16px;
  }

  .catalog-go {
    padding: 0;
    min-height: 40px;
  }

  .entry-grid,
  .entry-list,
  .overview-list,
  .usage-list,
  .scope-grid,
  .check-list,
  .related-list,
  .step-index-list,
  .feedback-steps,
  .back-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .path-item {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 12px;
    padding: 16px;
  }

  .log-item,
  .record-item,
  .version-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 14px 16px;
  }

  .record-date,
  .version-date {
    grid-row: auto;
  }

  .step-list .step-item {
    padding: 16px 16px 16px 52px;
  }

  .step-list .step-item::before {
    left: 16px;
    top: 16px;
  }

  .error-panel {
    padding: 24px 20px 28px;
  }

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

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

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

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

  .footer-note {
    flex: 1 1 100%;
  }
}