/* ==========================================================================
   光棍影院 · 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base · 变量与基础
   -------------------------------------------------------------------------- */
:root {
  --bg: #0f1420;
  --panel: #171d2b;
  --panel-2: #1c2333;
  --text: #e6eaf2;
  --text-dim: #9aa4b8;
  --accent: #ffb020;
  --ok: #2ecc8f;
  --warn: #e05a5a;
  --line: #2a3346;
  --line-soft: #232b3c;
  --radius: 6px;
  --radius-sm: 4px;
  --container: 1120px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo,
    "Courier New", monospace;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

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

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

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

p {
  margin: 0 0 12px;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 10px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
}

h1 { font-size: 28px; }
h2 { font-size: 20px; }
h3 { font-size: 16px; }
h4 { font-size: 15px; }

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

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

/* --------------------------------------------------------------------------
   layout · 全站骨架
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(15, 20, 32, 0.96);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  min-height: 62px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
  white-space: nowrap;
}

.brand::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  background: var(--accent);
  vertical-align: 2px;
}

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

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

.nav-link {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  color: var(--text-dim);
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--text);
}

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

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  position: relative;
}

.nav-toggle::before {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  top: 15px;
  height: 2px;
  background: var(--text);
  box-shadow: 0 6px 0 var(--text), 0 12px 0 var(--text);
}

.site-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 28px 20px 8px;
}

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

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

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 20px 20px;
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 24px;
}

.footer-name {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 8px;
}

.footer-desc {
  font-size: 13px;
  color: var(--text-dim);
  margin: 0;
  max-width: 30ch;
}

.footer-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.footer-group ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-group a {
  font-size: 13px;
  color: var(--text-dim);
}

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

.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 20px 24px;
  font-size: 12px;
  color: var(--text-dim);
  border-top: 1px solid var(--line);
}

/* --------------------------------------------------------------------------
   components · 通用组件
   -------------------------------------------------------------------------- */
.btn {
  display: inline-block;
  padding: 9px 18px;
  font-size: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: #14181f;
  font-weight: 700;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #ffc247;
  color: #14181f;
}

.btn-ghost {
  border-color: var(--line);
  color: var(--text);
}

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

.section-title {
  position: relative;
  padding-left: 12px;
  margin-bottom: 8px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: var(--accent);
}

.section-note,
.section-lead,
.section-desc {
  color: var(--text-dim);
  font-size: 14px;
  max-width: 72ch;
  margin: 0 0 18px;
}

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

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

.filter-bar {
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--panel);
  padding: 10px 14px;
  margin-bottom: 16px;
}

.filter-title {
  font-size: 14px;
  margin: 0 0 4px;
}

.filter-text {
  margin: 0;
  font-size: 13px;
  color: var(--text-dim);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 18px;
}

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

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

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

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

.page-header {
  padding-bottom: 20px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 28px;
  margin-bottom: 10px;
}

.page-description {
  font-size: 15px;
  color: var(--text-dim);
  max-width: 72ch;
  margin: 0;
}

.page-description a {
  color: var(--accent);
  border-bottom: 1px solid rgba(255, 176, 32, 0.4);
}

.version-code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  background: rgba(255, 176, 32, 0.1);
  border: 1px solid rgba(255, 176, 32, 0.35);
  border-radius: var(--radius-sm);
  padding: 1px 7px;
  white-space: nowrap;
}

/* 条目列表（首页与分类索引共用行结构） */
.entry-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

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

.entry-link {
  display: grid;
  grid-template-columns: 76px 1.1fr 2.2fr 120px 60px;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background: var(--panel);
  transition: background 0.15s ease;
}

.entry-link:hover,
.entry-link:focus-visible {
  background: var(--panel-2);
}

.entry-link:hover .entry-go,
.entry-link:focus-visible .entry-go {
  color: var(--accent);
  transform: translateX(3px);
}

.entry-code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

.entry-name {
  font-weight: 700;
  font-size: 15px;
}

.entry-use {
  font-size: 13px;
  color: var(--text-dim);
}

.entry-ver,
.entry-version {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

.entry-adjacent {
  font-size: 12px;
  color: var(--text-dim);
}

.entry-go {
  font-size: 13px;
  color: var(--text-dim);
  text-align: right;
  transition: color 0.15s ease, transform 0.15s ease;
}

/* 图片容器统一约束 */
.hero-figure,
.media-item,
.page-media,
.page-figure,
.guide-figure,
.updates-figure,
.section-media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
}

.hero-figure img,
.media-item img,
.page-media img,
.page-figure img,
.guide-figure img,
.updates-figure img,
.section-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-figure figcaption,
.media-item figcaption,
.page-media figcaption,
.page-figure figcaption,
.guide-figure figcaption,
.updates-figure figcaption,
.section-media figcaption {
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text-dim);
  border-top: 1px solid var(--line-soft);
}

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */
.lead-bar {
  margin: 0;
  padding: 8px 20px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-dim);
  text-align: center;
}

.home-main {
  padding-top: 24px;
}

.home-hero {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 24px;
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.hero-media {
  grid-column: 1;
  grid-row: 1;
}

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

.hero-intro {
  grid-column: 1;
  grid-row: 2;
  padding-top: 20px;
}

.hero-title {
  font-size: 28px;
  margin-bottom: 12px;
}

.hero-desc {
  color: var(--text-dim);
  max-width: 60ch;
  margin-bottom: 16px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
}

.hero-layout {
  grid-column: 2;
  grid-row: 1 / span 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-content: start;
}

.hero-main {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.hero-main .section-title {
  font-size: 17px;
}

.hero-main .section-note {
  font-size: 13px;
  margin-bottom: 12px;
}

.index-table {
  font-size: 13px;
}

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

.index-table th {
  text-align: left;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-dim);
  padding: 6px 8px;
  border-bottom: 1px solid var(--line);
}

.index-table td {
  padding: 8px;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}

.index-table tr:last-child td {
  border-bottom: 0;
}

.index-table .col-code {
  font-family: var(--font-mono);
  color: var(--accent);
  white-space: nowrap;
}

.index-table .col-ver {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  white-space: nowrap;
}

.hero-aside {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.aside-block {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.aside-title {
  font-size: 15px;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.aside-text {
  font-size: 13px;
  color: var(--text-dim);
  margin: 0;
}

.update-brief {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.update-brief li {
  font-size: 13px;
  color: var(--text-dim);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

.update-brief li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.update-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  margin-right: 6px;
}

.update-obj {
  color: var(--text);
  font-weight: 700;
  margin-right: 6px;
}

.update-text {
  display: block;
  margin-top: 2px;
}

.aside-more {
  margin: 12px 0 0;
  font-size: 13px;
}

.aside-more a {
  color: var(--accent);
}

.scope-block {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.scope-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.scope-col {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.scope-col-boundary {
  border-left: 3px solid var(--warn);
}

.scope-col-fit {
  border-left: 3px solid var(--ok);
}

.scope-heading {
  font-size: 15px;
  margin-bottom: 12px;
}

.scope-col-boundary .scope-heading {
  color: var(--warn);
}

.scope-col-fit .scope-heading {
  color: var(--ok);
}

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

.scope-list li {
  font-size: 13px;
  color: var(--text-dim);
  padding-left: 14px;
  position: relative;
}

.scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  background: var(--line);
}

.entry-section {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.media-strip {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.media-item {
  display: flex;
  flex-direction: column;
}

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

.faq-section {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

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

.faq-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 16px;
}

.faq-q {
  cursor: pointer;
  padding: 13px 0;
  font-size: 15px;
  font-weight: 700;
  list-style: none;
  position: relative;
  padding-right: 26px;
}

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

.faq-q::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  color: var(--accent);
}

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

.faq-a {
  margin: 0;
  padding: 0 0 14px;
  font-size: 14px;
  color: var(--text-dim);
  border-top: 1px solid var(--line-soft);
  padding-top: 12px;
}

.page-index {
  padding-bottom: 20px;
}

.page-index-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}

.page-index-grid a {
  display: block;
  padding: 12px 10px;
  text-align: center;
  font-size: 13px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s ease, color 0.15s ease;
}

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

/* --------------------------------------------------------------------------
   pages · 栏目分类索引
   -------------------------------------------------------------------------- */
.page-media {
  margin-top: 18px;
  aspect-ratio: 21 / 9;
}

.catalog-list {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.catalog-list .entry-link {
  grid-template-columns: 76px 1fr 2fr 110px 1fr;
}

.field-notes {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.field-notes-columns {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 20px;
}

.field-column {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.column-title {
  font-size: 15px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

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

.field-name-list li {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
}

.field-name-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

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

.field-value-list li {
  font-size: 13px;
  color: var(--text-dim);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
}

.field-value-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.adjacency {
  padding-bottom: 20px;
}

.adjacency-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}

.adjacency-step {
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 14px;
}

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

.adjacency-step p {
  margin: 0;
  font-size: 13px;
  color: var(--text-dim);
}

.adjacency-tail {
  margin: 0;
  font-size: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.adjacency-tail a {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   pages · 使用场景
   -------------------------------------------------------------------------- */
.page-figure {
  margin-bottom: 28px;
  aspect-ratio: 21 / 9;
}

.scenes-groups {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.scene-group {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 14px;
}

.scene-group:last-child {
  margin-bottom: 0;
}

.scene-group > h3 {
  font-size: 16px;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

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

.scene-item {
  padding-left: 14px;
  border-left: 2px solid var(--line);
}

.scene-code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  margin-right: 8px;
}

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

.scene-desc {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--text-dim);
}

.scene-conditions {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.conditions-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.conditions-col {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.conditions-col-required {
  border-left: 3px solid var(--ok);
}

.conditions-col-excluded {
  border-left: 3px solid var(--warn);
}

.conditions-col h3 {
  font-size: 15px;
  margin-bottom: 12px;
}

.conditions-col-required h3 {
  color: var(--ok);
}

.conditions-col-excluded h3 {
  color: var(--warn);
}

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

.condition-list li {
  font-size: 13px;
  color: var(--text-dim);
  padding: 8px 0;
  border-bottom: 1px solid var(--line-soft);
}

.condition-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.condition-list a {
  color: var(--accent);
}

.scene-misuse {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.misuse-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.misuse-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
}

.misuse-wrong {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--warn);
  padding-left: 20px;
  position: relative;
}

.misuse-wrong::before {
  content: "×";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
}

.misuse-right {
  margin: 0;
  font-size: 13px;
  color: var(--text-dim);
  padding-left: 20px;
  position: relative;
}

.misuse-right::before {
  content: "√";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  color: var(--ok);
}

.misuse-right a {
  color: var(--accent);
}

.scene-next {
  padding-bottom: 20px;
}

.scene-next p {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 0;
  font-size: 14px;
}

.scene-next a {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   pages · 操作指南
   -------------------------------------------------------------------------- */
.guide-version {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.version-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 20px;
}

.version-panel,
.condition-panel,
.scope-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.panel-title {
  font-size: 15px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.version-tag {
  margin: 0 0 8px;
}

.version-tag .version-code {
  margin-right: 6px;
}

.version-note {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--text-dim);
}

.version-note a {
  color: var(--accent);
}

.guide-steps {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.guide-figure {
  margin-bottom: 20px;
  aspect-ratio: 21 / 9;
}

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

.step-item {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

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

.step-body .step-title {
  font-size: 16px;
  margin-bottom: 8px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  border: 1px solid rgba(255, 176, 32, 0.35);
  border-radius: var(--radius-sm);
  padding: 1px 8px;
  white-space: nowrap;
}

.step-body p {
  margin: 0;
  font-size: 14px;
  color: var(--text-dim);
}

.step-body a {
  color: var(--accent);
}

.step-check {
  background: var(--panel-2);
  border-left: 2px solid var(--ok);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}

.step-check .check-title {
  font-size: 13px;
  margin-bottom: 6px;
  color: var(--ok);
}

.step-check p {
  margin: 0;
  font-size: 13px;
  color: var(--text-dim);
}

.guide-checklist {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.checklist {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.checklist-row {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 14px;
  align-items: center;
  padding: 11px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
}

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

.checklist-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
}

.checklist-text {
  color: var(--text-dim);
}

.guide-scope {
  padding-bottom: 20px;
}

.scope-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.scope-panel p {
  margin: 0;
  font-size: 14px;
  color: var(--text-dim);
}

.scope-panel-warn {
  border-left: 3px solid var(--warn);
}

.scope-panel-warn .panel-title {
  color: var(--warn);
}

/* --------------------------------------------------------------------------
   pages · 更新说明
   -------------------------------------------------------------------------- */
.updates-version {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.version-bar {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px;
}

.version-current {
  margin: 0 0 8px;
  font-size: 14px;
}

.version-current .version-code {
  font-size: 14px;
}

.version-note {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--text-dim);
}

.version-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.version-switch a {
  display: block;
  padding: 7px 14px;
  font-size: 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
}

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

.updates-figure {
  margin-bottom: 28px;
  aspect-ratio: 21 / 9;
}

.updates-log {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.month-group {
  margin-bottom: 20px;
}

.month-group:last-child {
  margin-bottom: 0;
}

.month-title {
  font-size: 15px;
  font-family: var(--font-mono);
  color: var(--accent);
  padding-bottom: 8px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

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

.change-item {
  display: grid;
  grid-template-columns: 90px 160px 1fr;
  gap: 14px;
  align-items: baseline;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
}

.change-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

.change-target {
  font-size: 14px;
  font-weight: 700;
}

.change-body {
  margin: 0;
  font-size: 13px;
  color: var(--text-dim);
}

.updates-trace {
  padding-bottom: 20px;
}

.trace-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 16px;
}

.trace-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
}

.trace-target {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 6px;
}

.trace-note {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--text-dim);
}

.trace-link {
  font-size: 13px;
  color: var(--accent);
}

.trace-back {
  margin: 0;
  font-size: 14px;
}

.trace-back a {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   pages · 问题反馈
   -------------------------------------------------------------------------- */
.section {
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.column {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.scope-accept {
  border-left: 3px solid var(--ok);
}

.scope-reject {
  border-left: 3px solid var(--warn);
}

.scope-accept .column-title {
  color: var(--ok);
}

.scope-reject .column-title {
  color: var(--warn);
}

.check-list,
.cross-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.check-list li,
.cross-list li {
  font-size: 13px;
  color: var(--text-dim);
  padding-left: 20px;
  position: relative;
}

.check-list li::before {
  content: "√";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  color: var(--ok);
}

.cross-list li::before {
  content: "×";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  color: var(--warn);
}

.feedback-media {
  margin-bottom: 28px;
  aspect-ratio: 21 / 9;
}

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

.info-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.info-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  padding-top: 2px;
}

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

.info-name {
  font-size: 15px;
  margin-bottom: 6px;
}

.info-body p {
  margin: 0;
  font-size: 13px;
  color: var(--text-dim);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.process-step {
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 14px;
}

.process-step .step-number {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 8px;
}

.process-step .step-name {
  font-size: 15px;
  margin-bottom: 6px;
}

.process-step p {
  margin: 0;
  font-size: 13px;
  color: var(--text-dim);
}

.selfcheck-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.selfcheck-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
}

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

.selfcheck-item p {
  margin: 0;
  font-size: 13px;
  color: var(--text-dim);
}

.selfcheck-item a {
  color: var(--accent);
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.related-links a {
  display: block;
  padding: 8px 14px;
  font-size: 13px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
}

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

/* --------------------------------------------------------------------------
   pages · 404
   -------------------------------------------------------------------------- */
.error-main {
  padding-top: 40px;
}

.error-block {
  text-align: left;
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.error-block h1 {
  font-size: 28px;
  margin-bottom: 12px;
}

.error-lead {
  font-size: 15px;
  color: var(--text-dim);
  max-width: 60ch;
  margin-bottom: 20px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.error-paths {
  padding-bottom: 20px;
}

.error-paths h2 {
  font-size: 18px;
  margin-bottom: 14px;
}

.error-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.error-list a {
  display: block;
  padding: 12px 14px;
  font-size: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
}

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

/* --------------------------------------------------------------------------
   responsive · 断点
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .home-hero {
    grid-template-columns: 1fr;
  }

  .hero-media,
  .hero-intro,
  .hero-layout {
    grid-column: 1;
    grid-row: auto;
  }

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

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

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

  .adjacency-flow,
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .step-item {
    grid-template-columns: 1fr;
  }

  .step-check {
    border-left: 0;
    border-top: 2px solid var(--ok);
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 0 16px;
  }

  .nav-toggle {
    display: block;
  }

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 12px;
    border-top: 1px solid var(--line);
  }

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

  .nav-link {
    padding: 13px 4px;
    font-size: 15px;
    border-bottom: 1px solid var(--line-soft);
    border-left: 3px solid transparent;
  }

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

  .site-main {
    padding: 20px 16px 8px;
  }

  .page-title,
  .hero-title,
  .error-block h1 {
    font-size: 22px;
  }

  .entry-link {
    grid-template-columns: 64px 1fr 60px;
    gap: 10px;
    padding: 12px 14px;
  }

  .entry-use,
  .entry-ver,
  .entry-version,
  .entry-adjacent {
    grid-column: 2 / -1;
  }

  .entry-go {
    grid-column: 3;
    grid-row: 1;
  }

  .catalog-list .entry-link {
    grid-template-columns: 64px 1fr 60px;
  }

  .scope-columns,
  .conditions-columns,
  .misuse-list,
  .field-notes-columns,
  .version-grid,
  .scope-grid,
  .two-column,
  .selfcheck-grid,
  .trace-list {
    grid-template-columns: 1fr;
  }

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

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

  .adjacency-flow,
  .process-steps,
  .error-list {
    grid-template-columns: 1fr;
  }

  .change-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    padding: 24px 16px 16px;
  }

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

  .footer-bottom {
    padding: 12px 16px 20px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  .lead-bar {
    font-size: 12px;
    text-align: left;
  }

  .index-table th,
  .index-table td {
    padding: 7px 6px;
    font-size: 12px;
  }

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

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

  .error-actions .btn-primary,
  .error-actions .btn-ghost {
    display: block;
    text-align: center;
  }
}

/* --------------------------------------------------------------------------
   print
   -------------------------------------------------------------------------- */
@media print {
  .site-header,
  .site-nav,
  .nav-toggle,
  .lead-bar,
  .hero-actions,
  .filter-bar,
  .page-index,
  .related-links,
  .version-switch,
  .adjacency-tail {
    display: none !important;
  }

  body {
    background: #fff;
    color: #111;
  }

  .site-footer,
  .footer-inner,
  .footer-bottom {
    background: #fff;
    color: #333;
  }
}

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