/* =========================================================
   被窝福利电影 · 全站样式
   base → layout → components → pages → responsive
   ========================================================= */

/* ---------- base : 变量与重置 ---------- */
:root {
  --ink: #1f2a37;
  --ink-soft: #3d4753;
  --ink-mute: #6b7280;
  --accent: #8a6d3b;
  --accent-soft: #a98a55;
  --bg: #fbfaf7;
  --bg-alt: #f4f1ea;
  --line: #d9d4cb;
  --line-strong: #c3bcb0;
  --white: #ffffff;
  --serif: Georgia, "Songti SC", "SimSun", "Times New Roman", serif;
  --sans: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius: 6px;
  --radius-sm: 4px;
  --wrap: 1120px;
  --gap: 28px;
}

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

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

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

h1,
h2,
h3,
h4 {
  margin: 0 0 0.5em;
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.35;
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin: 0 0 1em;
}

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

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

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

a:hover {
  color: var(--ink);
}

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

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

figure {
  margin: 0;
}

figcaption {
  margin-top: 8px;
  color: var(--ink-mute);
  font-size: 13px;
  line-height: 1.6;
}

/* ---------- layout : 骨架 ---------- */

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 68px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--ink);
  border-bottom: 2px solid transparent;
  padding: 4px 0;
}

.brand:hover {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.brand-mark {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-sub {
  color: var(--ink-mute);
  font-size: 12px;
  letter-spacing: 0.04em;
}

/* 主导航 */
.site-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.nav-list > li > a {
  display: inline-block;
  padding: 9px 14px;
  min-height: 44px;
  line-height: 26px;
  color: var(--ink);
  font-size: 15px;
  border-bottom: 2px solid transparent;
}

.nav-list > li > a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent-soft);
}

.nav-list > li > a.is-current {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

/* 移动导航按钮：桌面隐藏 */
.nav-toggle {
  display: none;
  margin-left: auto;
  width: 46px;
  height: 44px;
  padding: 10px 11px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--white);
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--ink);
}

/* 主内容 */
.site-main {
  display: block;
}

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

.inner-main {
  padding-top: 20px;
  padding-bottom: 56px;
}

.home-main {
  padding-bottom: 64px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 0 0;
  color: var(--ink-mute);
  font-size: 13px;
}

.breadcrumb a {
  color: var(--ink-mute);
  border-bottom: 1px solid var(--line-strong);
}

.breadcrumb a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

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

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

/* 内页标题区 */
.page-header {
  padding: 22px 0 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 36px;
}

.page-title {
  margin: 0 0 12px;
  font-size: 32px;
  color: var(--ink);
}

.page-description {
  max-width: 820px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 16px;
}

/* 区块标题组 */
.section-head {
  margin-bottom: 22px;
}

.section-title {
  margin: 0 0 8px;
  font-size: 24px;
}

.section-desc,
.section-intro,
.section-lead {
  max-width: 820px;
  margin: 0;
  color: var(--ink-mute);
  font-size: 15px;
}

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

.section-foot {
  margin: 22px 0 0;
  font-size: 15px;
}

.section-foot a + a {
  margin-left: 18px;
}

/* 页脚 */
.site-footer {
  margin-top: 24px;
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
}

.footer-top {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 44px 24px 34px;
  display: grid;
  grid-template-columns: minmax(240px, 1fr) 2fr;
  gap: 40px;
}

.footer-name {
  margin: 0 0 10px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
}

.footer-desc {
  margin: 0;
  max-width: 320px;
  color: var(--ink-mute);
  font-size: 14px;
  line-height: 1.7;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.footer-col-title {
  margin: 0 0 12px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
}

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

.footer-links a {
  color: var(--ink-soft);
  font-size: 14px;
  border-bottom: 1px solid transparent;
}

.footer-links a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent-soft);
}

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

.footer-copy {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px 24px;
  color: var(--ink-mute);
  font-size: 13px;
}

/* ---------- components : 通用组件 ---------- */

/* 通用图片容器 */
.hero-media,
.topic-media,
.genre-figure,
.topic-figure,
.guide-figure,
.scope-figure {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.hero-media img,
.topic-media img,
.genre-figure img,
.topic-figure img,
.guide-figure img,
.scope-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--bg-alt);
}

/* 数据表格 */
.data-table,
.field-table {
  width: 100%;
  margin: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 15px;
}

.table-caption,
.field-table-caption {
  caption-side: top;
  padding: 14px 16px;
  text-align: left;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
  border-bottom: 1px solid var(--line);
}

.data-table th,
.data-table td,
.field-table th,
.field-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  line-height: 1.7;
}

.data-table thead th,
.field-table thead th {
  background: var(--bg-alt);
  color: var(--ink);
  font-weight: 600;
  font-size: 14px;
}

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

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

.data-table tbody tr:hover,
.field-table tbody tr:hover {
  background: #faf8f3;
}

/* 编号步骤（首页 guide-points） */
.guide-points .guide-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap);
  counter-reset: gstep;
}

.guide-points .guide-step {
  position: relative;
  padding: 22px 20px 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.guide-points .step-index {
  display: block;
  margin-bottom: 10px;
  color: var(--accent);
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
}

.guide-points .step-title {
  margin: 0 0 8px;
  font-size: 17px;
}

.guide-points .step-desc {
  margin: 0;
  color: var(--ink-mute);
  font-size: 14px;
  line-height: 1.7;
}

.guide-more {
  margin: 24px 0 0;
  font-size: 15px;
}

/* 内页编号步骤（guide） */
.step-list {
  display: grid;
  gap: 18px;
  counter-reset: step;
}

.step-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 18px;
  padding: 20px 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.step-item .step-index {
  color: var(--accent);
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
}

.step-body h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.step-body p {
  margin: 0;
  color: var(--ink-mute);
  font-size: 15px;
}

/* FAQ 折叠 */
.guide-faq .faq-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 12px;
}

.guide-faq .faq-question {
  padding: 16px 48px 16px 20px;
  min-height: 44px;
  cursor: pointer;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
  list-style: none;
  position: relative;
}

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

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

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

.guide-faq .faq-answer {
  padding: 14px 20px 16px;
  border-top: 1px solid var(--line);
}

.guide-faq .faq-answer p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
}

/* 通用按钮（404） */
.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--ink);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--accent);
  color: var(--white);
}

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

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

/* ---------- pages : 首页 ---------- */

/* 首屏 */
.hero {
  padding: 44px 0 56px;
  border-bottom: 1px solid var(--line);
}

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

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

.hero-title {
  margin: 0 0 16px;
  font-size: 32px;
  line-height: 1.4;
}

.hero-lead {
  max-width: 560px;
  margin: 0 0 14px;
  color: var(--ink-soft);
  font-size: 17px;
}

.hero-note {
  max-width: 560px;
  margin: 0 0 26px;
  color: var(--ink-mute);
  font-size: 14px;
}

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

.hero-path a {
  display: block;
  min-height: 44px;
  padding: 14px 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent-soft);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.hero-path a:hover {
  border-left-color: var(--accent);
  background: #fdfbf6;
  color: var(--accent);
}

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

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

.hero-media figcaption {
  padding: 10px 14px 14px;
}

/* 题材分类总览 */
.genre-overview,
.topic-overview,
.guide-points,
.boundary-entry {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.boundary-entry {
  border-bottom: 0;
}

.genre-overview .genre-list {
  border-top: 1px solid var(--line);
}

.genre-overview .genre-row {
  display: grid;
  grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
  gap: 24px;
  align-items: baseline;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line);
}

.genre-overview .genre-name {
  margin: 0;
  font-size: 17px;
}

.genre-overview .genre-name a {
  color: var(--ink);
}

.genre-overview .genre-name a:hover {
  color: var(--accent);
}

.genre-overview .genre-scope {
  margin: 0;
  color: var(--ink-mute);
  font-size: 15px;
}

/* 专题速览 */
.topic-overview .topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.topic-overview .topic-card {
  padding: 22px 22px 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.topic-overview .topic-card:hover {
  background: #fdfbf6;
  border-color: var(--line-strong);
}

.topic-overview .topic-name {
  margin: 0 0 8px;
  font-size: 18px;
}

.topic-overview .topic-name a {
  color: var(--ink);
}

.topic-overview .topic-name a:hover {
  color: var(--accent);
}

.topic-overview .topic-range {
  margin: 0;
  color: var(--ink-mute);
  font-size: 14px;
  line-height: 1.7;
}

.topic-overview .topic-media img {
  aspect-ratio: 21 / 9;
}

.topic-overview .topic-media figcaption {
  padding: 10px 14px 14px;
}

/* 内容边界与反馈入口 */
.boundary-entry .boundary-blocks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.boundary-entry .boundary-block {
  padding: 22px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.boundary-entry .block-title {
  margin: 0 0 10px;
  font-size: 17px;
}

.boundary-entry .block-desc {
  margin: 0 0 10px;
  color: var(--ink-soft);
  font-size: 15px;
}

.boundary-entry .block-desc:last-child {
  margin-bottom: 0;
}

/* ---------- pages : 题材分类 ---------- */
.genre-summary,
.genre-tips {
  margin-bottom: 48px;
}

.field-table {
  margin-bottom: 48px;
}

.genre-summary .genre-list {
  display: grid;
  gap: 20px;
}

.genre-summary .genre-item {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 24px;
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.genre-summary .genre-figure img {
  aspect-ratio: 16 / 10;
}

.genre-summary .genre-body {
  min-width: 0;
}

.genre-summary .genre-name {
  margin: 0 0 8px;
  font-size: 18px;
}

.genre-summary .genre-scope {
  margin: 0 0 8px;
  color: var(--ink-soft);
  font-size: 15px;
}

.genre-summary .genre-field-note {
  margin: 0;
  color: var(--ink-mute);
  font-size: 14px;
}

.genre-tips .tips-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.genre-tips .tips-item {
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.genre-tips .tips-name {
  margin: 0 0 8px;
  font-size: 17px;
}

.genre-tips .tips-text {
  margin: 0;
  color: var(--ink-mute);
  font-size: 15px;
}

/* ---------- pages : 专题策划 ---------- */
.topic-summary,
.topic-items,
.topic-scope {
  margin-bottom: 48px;
}

.topic-summary .topic-figure {
  margin-bottom: 26px;
}

.topic-summary .topic-figure img {
  aspect-ratio: 21 / 9;
}

.topic-summary .topic-figure figcaption {
  padding: 10px 14px 14px;
}

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

.topic-summary .topic-summary-item {
  display: flex;
  flex-direction: column;
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.topic-summary .topic-name {
  margin: 0 0 8px;
  font-size: 18px;
}

.topic-summary .topic-direction {
  margin: 0 0 8px;
  color: var(--ink-soft);
  font-size: 15px;
}

.topic-summary .topic-scope {
  margin: 0 0 16px;
  color: var(--ink-mute);
  font-size: 14px;
}

.topic-summary .topic-summary-item a {
  margin-top: auto;
  align-self: flex-start;
  min-height: 44px;
  line-height: 44px;
  font-size: 15px;
  border-bottom: 1px solid var(--accent-soft);
}

.topic-summary .topic-summary-item a:hover {
  border-bottom-color: var(--accent);
}

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

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

.topic-scope .scope-name {
  margin: 0 0 8px;
  font-size: 17px;
}

.topic-scope .scope-text {
  margin: 0;
  color: var(--ink-mute);
  font-size: 15px;
}

.topic-scope .scope-note {
  margin: 22px 0 0;
  font-size: 15px;
}

/* ---------- pages : 浏览指引 ---------- */
.guide-steps,
.field-explain,
.guide-faq {
  margin-bottom: 48px;
}

.guide-steps .guide-figure {
  margin-bottom: 26px;
}

.guide-steps .guide-figure img {
  aspect-ratio: 21 / 9;
}

.guide-steps .guide-figure figcaption {
  padding: 10px 14px 14px;
}

/* ---------- pages : 收录范围与反馈 ---------- */
.scope-section,
.label-section,
.feedback-section,
.related-section {
  margin-bottom: 48px;
}

.scope-section .scope-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 26px;
}

.scope-section .scope-block {
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.scope-section .scope-in {
  border-top: 3px solid var(--accent-soft);
}

.scope-section .scope-out {
  border-top: 3px solid var(--line-strong);
}

.scope-section .scope-title {
  margin: 0 0 12px;
  font-size: 17px;
}

.scope-section .scope-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  color: var(--ink-soft);
  font-size: 15px;
}

.scope-section .scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--line-strong);
  border-radius: 50%;
}

.scope-section .scope-in .scope-list li::before {
  background: var(--accent-soft);
}

.scope-section .scope-figure {
  margin-bottom: 20px;
}

.scope-section .scope-figure img {
  aspect-ratio: 21 / 9;
}

.scope-section .scope-figure figcaption {
  padding: 10px 14px 14px;
}

.scope-section .scope-note {
  margin: 0;
  color: var(--ink-mute);
  font-size: 15px;
}

.label-section .label-note {
  margin: 18px 0 0;
  color: var(--ink-mute);
  font-size: 15px;
}

.feedback-section .feedback-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.feedback-section .feedback-step {
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.feedback-section .step-title {
  margin: 0 0 8px;
  font-size: 17px;
}

.feedback-section .step-desc {
  margin: 0;
  color: var(--ink-mute);
  font-size: 15px;
}

.feedback-section .feedback-note {
  padding: 22px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent-soft);
  border-radius: var(--radius);
}

.feedback-section .note-title {
  margin: 0 0 10px;
  font-size: 17px;
}

.feedback-section .note-text {
  margin: 0 0 8px;
  color: var(--ink-soft);
  font-size: 15px;
}

.feedback-section .note-text:last-child {
  margin-bottom: 0;
}

.related-section .related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.related-section .related-item {
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-section .related-item a {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 600;
  border-bottom: 1px solid var(--accent-soft);
}

.related-section .related-item a:hover {
  border-bottom-color: var(--accent);
}

.related-section .related-desc {
  margin: 0;
  color: var(--ink-mute);
  font-size: 14px;
}

/* ---------- pages : 404 ---------- */
.error-main {
  padding-top: 56px;
  padding-bottom: 64px;
}

.error-block {
  max-width: 640px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
}

.error-code {
  margin: 0 0 8px;
  color: var(--accent);
  font-family: var(--serif);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
}

.error-block h1 {
  margin: 0 0 12px;
  font-size: 32px;
}

.error-text {
  margin: 0 0 24px;
  color: var(--ink-soft);
  font-size: 16px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.error-paths {
  padding-top: 36px;
}

.error-paths h2 {
  margin: 0 0 16px;
  font-size: 22px;
}

.error-path-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.error-path-list li a {
  display: block;
  min-height: 44px;
  padding: 14px 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.error-path-list li a:hover {
  color: var(--accent);
  border-color: var(--accent-soft);
}

/* 滚动进入的轻量淡入（不影响初始可见性） */
.fade-ready {
  animation: fade-in 0.5s ease both;
}

@keyframes fade-in {
  from {
    transform: translateY(10px);
  }

  to {
    transform: translateY(0);
  }
}

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

  .fade-ready {
    animation: none;
  }
}

/* ---------- responsive : 1024px ---------- */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

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

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

  .footer-top {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }

  .genre-summary .genre-item {
    grid-template-columns: 220px minmax(0, 1fr);
  }
}

/* ---------- responsive : 768px ---------- */
@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
    min-height: 60px;
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    flex: 1 0 100%;
    margin-left: 0;
    order: 3;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 12px;
    border-top: 1px solid var(--line);
  }

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

  .nav-list > li > a {
    display: block;
    padding: 12px 4px;
    border-bottom: 1px solid var(--line);
  }

  .nav-list > li:last-child > a {
    border-bottom: 0;
  }

  .nav-list > li > a.is-current {
    border-bottom-color: var(--line);
    color: var(--accent);
  }

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

  .page-title,
  .hero-title,
  .error-block h1 {
    font-size: 26px;
  }

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

  .hero {
    padding: 30px 0 40px;
  }

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

  .genre-overview,
  .topic-overview,
  .guide-points,
  .boundary-entry {
    padding: 40px 0;
  }

  .genre-overview .genre-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .topic-overview .topic-grid,
  .boundary-entry .boundary-blocks,
  .genre-tips .tips-list,
  .topic-summary .topic-summary-list,
  .topic-scope .scope-list,
  .scope-section .scope-grid,
  .related-section .related-list,
  .feedback-section .feedback-steps,
  .error-path-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .step-item {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 12px;
    padding: 18px;
  }

  .footer-top {
    padding: 34px 16px 26px;
  }

  .footer-nav {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .footer-copy {
    padding: 16px;
  }

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

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

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

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

  .brand-sub {
    display: none;
  }

  .hero-title,
  .page-title,
  .error-block h1 {
    font-size: 23px;
  }

  .data-table tbody th,
  .field-table tbody th {
    white-space: normal;
  }

  .error-code {
    font-size: 34px;
  }
}