/* ==========================================================================
   被窝影院 whzhdc.cn — 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base — 变量、重置、排版、骨架基础
   -------------------------------------------------------------------------- */

:root {
  --c-deep: #141a24;
  --c-deep-soft: #1c2431;
  --c-light: #f5f6f8;
  --c-card: #ffffff;
  --c-accent: #3d7dff;
  --c-accent-dark: #2b62d6;
  --c-new: #2f9e6b;
  --c-adjust: #c98a1a;
  --c-note: #6b7488;
  --c-text: #1f2733;
  --c-text-soft: #5c6675;
  --c-line: #dfe3e9;
  --c-line-soft: #eaeef3;
  --radius: 6px;
  --radius-sm: 4px;
  --wrap: 1120px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", Menlo, monospace;
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--c-text);
  background: var(--c-light);
}

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.3;
  color: var(--c-text);
}

p {
  margin: 0;
}

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

dl, dt, dd {
  margin: 0;
}

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

a:hover {
  color: var(--c-accent-dark);
}

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

figure {
  margin: 0;
}

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

time {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

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

/* --------------------------------------------------------------------------
   layout — 全站骨架：页头、主导航、主内容、面包屑、页脚
   -------------------------------------------------------------------------- */

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

.site-header {
  background: var(--c-deep);
  color: #e8ecf3;
  border-bottom: 1px solid #232c3a;
}

.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 62px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: #ffffff;
}

.brand:hover {
  color: #ffffff;
}

.brand-mark {
  display: inline-block;
  padding: 3px 9px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: #ffffff;
  background: var(--c-accent);
  border-radius: var(--radius-sm);
}

.brand-sub {
  font-size: 13px;
  color: #97a3b6;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--radius-sm);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: #e8ecf3;
}

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

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

.nav-link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  line-height: 1.6;
  color: #c3ccda;
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  color: #ffffff;
  background: var(--c-deep-soft);
}

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

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

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

.breadcrumb {
  padding: 18px 0 6px;
  font-size: 14px;
  color: var(--c-text-soft);
}

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

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

.breadcrumb-sep {
  margin: 0 8px;
  color: #b3bbc8;
}

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

.page-header {
  padding: 10px 0 22px;
  border-bottom: 1px solid var(--c-line);
  margin-bottom: 28px;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--c-text);
}

.page-description {
  margin-top: 10px;
  max-width: 860px;
  font-size: 15px;
  color: var(--c-text-soft);
}

.section-title {
  font-size: 22px;
  font-weight: 700;
}

.section-desc,
.section-intro {
  margin-top: 8px;
  max-width: 880px;
  font-size: 15px;
  color: var(--c-text-soft);
}

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

.site-footer {
  background: var(--c-deep);
  color: #a9b3c2;
  border-top: 1px solid #232c3a;
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 40px 24px 26px;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
}

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

.footer-slogan {
  margin-top: 6px;
  font-size: 14px;
  color: #8894a6;
}

.footer-intro {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.8;
  color: #8894a6;
}

.footer-title {
  font-size: 14px;
  font-weight: 700;
  color: #e8ecf3;
  margin-bottom: 12px;
}

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

.footer-list a {
  font-size: 14px;
  color: #a9b3c2;
}

.footer-list a:hover {
  color: #ffffff;
}

.footer-bottom {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px 24px 26px;
  border-top: 1px solid #232c3a;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  font-size: 13px;
  color: #7c8798;
}

.footer-boundary {
  max-width: 720px;
}

/* --------------------------------------------------------------------------
   components — 通用组件：卡片、标签、表格、字段、任务带、按钮
   -------------------------------------------------------------------------- */

.text-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  color: var(--c-accent);
  border-bottom: 1px solid rgba(61, 125, 255, 0.35);
}

.text-link:hover {
  color: var(--c-accent-dark);
  border-bottom-color: var(--c-accent-dark);
}

.tag,
.brief-tag {
  display: inline-block;
  padding: 1px 8px;
  font-size: 12px;
  line-height: 1.7;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.tag-new {
  color: #1c6e4b;
  background: #e2f3ea;
}

.tag-adjust {
  color: #8a5c0c;
  background: #f8eed8;
}

.tag-note {
  color: #4a5468;
  background: #e9ecf1;
}

.tag.tag-new,
.tag.tag-adjust,
.tag.tag-note {
  flex: 0 0 auto;
}

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

.field-row {
  display: grid;
  grid-template-columns: 190px 1fr;
  border-bottom: 1px solid var(--c-line-soft);
}

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

.field-name {
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-text);
  background: #f8f9fb;
  border-right: 1px solid var(--c-line-soft);
}

.field-desc,
.field-value {
  padding: 12px 16px;
  font-size: 14px;
  color: var(--c-text-soft);
}

.field-list {
  border-top: 1px solid var(--c-line-soft);
}

.field-list .field-name {
  padding: 10px 0 2px;
  background: none;
  border-right: 0;
  color: var(--c-text);
}

.field-list .field-desc {
  padding: 0 0 10px;
  border-bottom: 1px solid var(--c-line-soft);
}

.boundary-list {
  border-left: 3px solid var(--c-accent);
  padding-left: 16px;
}

.boundary-item {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  color: var(--c-text-soft);
}

.boundary-item + .boundary-item {
  margin-top: 10px;
}

.boundary-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--c-accent);
  border-radius: 50%;
}

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

.task-card,
.related-card {
  display: block;
  padding: 18px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  color: var(--c-text);
}

.task-card:hover,
.related-card:hover {
  background: #fbfcfe;
  border-color: var(--c-accent);
  color: var(--c-text);
}

.task-name,
.task-title,
.related-name {
  font-size: 16px;
  font-weight: 700;
}

.task-desc,
.related-desc,
.task-text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--c-text-soft);
}

.task-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  color: var(--c-accent);
}

.group-title {
  margin: 26px 0 12px;
  padding-left: 10px;
  font-size: 15px;
  font-weight: 700;
  color: var(--c-text);
  border-left: 3px solid var(--c-accent);
}

.group-title:first-of-type {
  margin-top: 0;
}

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

/* 公告栏式首屏 */
.hero-board {
  background: var(--c-deep);
  color: #e8ecf3;
}

.hero-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 44px 24px 36px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.hero-tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: 13px;
  color: #b9c6dd;
  background: #212b3b;
  border-radius: var(--radius-sm);
}

.hero-title {
  margin-top: 14px;
  font-size: 34px;
  font-weight: 700;
  color: #ffffff;
}

.hero-text {
  margin-top: 14px;
  max-width: 620px;
  font-size: 15px;
  line-height: 1.85;
  color: #a9b6c9;
}

.hero-entries {
  display: grid;
  gap: 12px;
}

.entry-card {
  display: block;
  padding: 14px 16px;
  background: var(--c-deep-soft);
  border: 1px solid #2a3446;
  border-radius: var(--radius);
  color: #ffffff;
}

.entry-card:hover {
  background: #222c3c;
  border-color: var(--c-accent);
  color: #ffffff;
}

.entry-name {
  display: block;
  font-size: 16px;
  font-weight: 700;
}

.entry-desc {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: #97a3b6;
}

.hero-boundary {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 12px 24px 20px;
  font-size: 13px;
  color: #8894a6;
  border-top: 1px solid #232c3a;
}

/* 首屏主视觉 */
.hero-visual {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 38px 24px 8px;
}

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

.visual-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.visual-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--c-text-soft);
  border-top: 1px solid var(--c-line-soft);
}

/* 影片分类总览表 */
.cat-overview {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 38px 24px 8px;
}

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

.cat-row {
  display: grid;
  grid-template-columns: 1.1fr 1.5fr 1.5fr 1.6fr;
  border-bottom: 1px solid var(--c-line-soft);
}

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

.cat-row:hover {
  background: #f9fbfd;
}

.cat-row-head {
  background: #eef1f6;
  font-weight: 700;
  color: var(--c-text);
}

.cat-row-head:hover {
  background: #eef1f6;
}

.cat-cell {
  padding: 11px 14px;
  font-size: 14px;
  color: var(--c-text-soft);
  border-right: 1px solid var(--c-line-soft);
}

.cat-cell:last-child {
  border-right: 0;
}

.cat-name {
  font-weight: 700;
  color: var(--c-text);
}

.cat-field {
  font-size: 13px;
}

.cat-group {
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--c-accent-dark);
  background: #f2f5fb;
  border-bottom: 1px solid var(--c-line-soft);
}

.cat-more {
  margin-top: 14px;
}

/* 专题片单入口 */
.collection-entry {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 38px 24px 8px;
}

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

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

.collection-card:hover {
  border-color: var(--c-accent);
}

.collection-cover {
  background: #eef1f6;
}

.collection-cover img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.collection-name {
  padding: 14px 16px 0;
  font-size: 17px;
  font-weight: 700;
}

.collection-scope {
  padding: 8px 16px 0;
  font-size: 14px;
  color: var(--c-text);
}

.collection-note {
  padding: 6px 16px 16px;
  font-size: 13px;
  color: var(--c-text-soft);
}

.collection-more {
  margin-top: 14px;
}

/* 整理记录速览 */
.records-brief {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 38px 24px 8px;
}

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

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

.brief-month-name {
  font-size: 15px;
  font-weight: 700;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-line-soft);
}

.brief-list {
  margin-top: 10px;
}

.brief-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 4px 10px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--c-line-soft);
}

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

.brief-date {
  font-size: 13px;
  color: var(--c-text-soft);
}

.brief-target {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-text);
}

.brief-text {
  grid-column: 1 / -1;
  font-size: 13px;
  color: var(--c-text-soft);
}

.records-more {
  margin-top: 14px;
}

/* 浏览指引与字段说明摘要 */
.guide-brief {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 38px 24px 8px;
}

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

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

.col-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

/* 站内页面索引 */
.site-index {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 38px 24px 56px;
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

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

.index-name {
  font-size: 16px;
  font-weight: 700;
}

.index-name a {
  color: var(--c-text);
}

.index-name a:hover {
  color: var(--c-accent);
}

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

/* --------------------------------------------------------------------------
   pages — 影片分类
   -------------------------------------------------------------------------- */

.catalog-section {
  margin-bottom: 40px;
}

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

.catalog-row {
  display: grid;
  grid-template-columns: 1.1fr 1.5fr 1.5fr 1.6fr;
  border-bottom: 1px solid var(--c-line-soft);
}

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

.catalog-row:hover {
  background: #f9fbfd;
}

.catalog-row > span {
  padding: 11px 14px;
  font-size: 14px;
  color: var(--c-text-soft);
  border-right: 1px solid var(--c-line-soft);
}

.catalog-row > span:last-child {
  border-right: 0;
}

.catalog-name {
  font-weight: 700;
  color: var(--c-text);
}

.catalog-field {
  font-size: 13px;
}

.catalog-figure {
  margin-top: 22px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-card);
  overflow: hidden;
}

.catalog-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}

.catalog-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--c-text-soft);
  border-top: 1px solid var(--c-line-soft);
}

.fields-section,
.boundary-section {
  margin-bottom: 40px;
}

.boundary-section .boundary-list {
  margin-top: 16px;
}

.task-strip {
  margin-bottom: 8px;
}

.task-strip .task-grid {
  margin-top: 18px;
}

/* --------------------------------------------------------------------------
   pages — 专题片单
   -------------------------------------------------------------------------- */

.page-layout {
  display: block;
}

.collections-section {
  margin-bottom: 8px;
}

.collection-body {
  padding-bottom: 4px;
}

.collection-fields-section,
.boundary-section,
.related-section {
  margin-top: 40px;
}

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

.related-section .related-grid {
  margin-top: 18px;
}

/* --------------------------------------------------------------------------
   pages — 浏览指引
   -------------------------------------------------------------------------- */

.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 288px;
  gap: 32px;
  align-items: start;
}

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

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

.guide-section {
  margin-bottom: 40px;
}

.section-media {
  margin: 18px 0 22px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-card);
  overflow: hidden;
}

.section-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}

.section-media figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--c-text-soft);
  border-top: 1px solid var(--c-line-soft);
}

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

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

.prepare-name {
  font-size: 16px;
  font-weight: 700;
}

.prepare-text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--c-text-soft);
}

.prepare-list {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--c-line-soft);
}

.prepare-list li {
  position: relative;
  padding-left: 14px;
  font-size: 14px;
  color: var(--c-text-soft);
}

.prepare-list li + li {
  margin-top: 6px;
}

.prepare-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  background: var(--c-accent);
  border-radius: 50%;
}

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

.step-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto;
  grid-template-areas:
    "index name state"
    "index text state";
  align-items: start;
  gap: 2px 14px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--c-line-soft);
}

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

.step-index {
  grid-area: index;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
  background: #9aa4b4;
  border-radius: 50%;
}

.step-name {
  grid-area: name;
  font-size: 16px;
  font-weight: 700;
}

.step-text {
  grid-area: text;
  font-size: 14px;
  color: var(--c-text-soft);
}

.step-state {
  grid-area: state;
  align-self: center;
  padding: 2px 10px;
  font-size: 13px;
  color: var(--c-text-soft);
  background: #eef1f6;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.step-item.is-done .step-index {
  background: var(--c-new);
}

.step-item.is-done .step-state {
  color: #1c6e4b;
  background: #e2f3ea;
}

.step-item.is-current {
  background: #f4f8ff;
}

.step-item.is-current .step-index {
  background: var(--c-accent);
}

.step-item.is-current .step-state {
  color: #2b5bb5;
  background: #e3edff;
}

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

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

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

.faq-question {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 700;
  color: var(--c-text);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::before {
  content: "+";
  flex: 0 0 auto;
  width: 18px;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--c-accent);
  text-align: center;
}

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

.faq-question:hover {
  background: #f9fbfd;
}

.faq-answer {
  padding: 0 18px 16px 46px;
  font-size: 14px;
  color: var(--c-text-soft);
}

.field-boundary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.field-table-title,
.boundary-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
}

.field-table-body {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-card);
  font-size: 14px;
}

.field-table-body th,
.field-table-body td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--c-line-soft);
}

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

.field-table-body th {
  width: 130px;
  font-weight: 700;
  color: var(--c-text);
  background: #f8f9fb;
  border-right: 1px solid var(--c-line-soft);
}

.field-table-body td {
  color: var(--c-text-soft);
}

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

.boundary-col .boundary-list {
  margin-top: 14px;
}

.boundary-more {
  margin-top: 14px;
}

.boundary-more a {
  font-size: 14px;
}

.task-band {
  margin-bottom: 8px;
}

.task-band .task-grid {
  margin-top: 18px;
}

.feedback-note {
  margin-top: 16px;
  font-size: 14px;
  color: var(--c-text-soft);
}

/* 浏览指引侧栏进度导航 */
.guide-progress {
  position: sticky;
  top: 24px;
  padding: 18px 20px;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.progress-title {
  font-size: 16px;
  font-weight: 700;
}

.progress-desc {
  margin-top: 6px;
  font-size: 13px;
  color: var(--c-text-soft);
}

.progress-list {
  margin-top: 14px;
  border-top: 1px solid var(--c-line-soft);
}

.progress-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--c-line-soft);
}

.progress-item a {
  font-size: 14px;
  color: var(--c-text-soft);
}

.progress-item a:hover {
  color: var(--c-accent);
}

.progress-state {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--c-text-soft);
}

.progress-item.is-done a {
  color: var(--c-new);
}

.progress-item.is-current a {
  font-weight: 700;
  color: var(--c-accent);
}

.progress-item.is-current .progress-state {
  color: var(--c-accent);
}

.progress-tip {
  margin-top: 14px;
  font-size: 13px;
  color: var(--c-text-soft);
}

/* --------------------------------------------------------------------------
   pages — 整理记录
   -------------------------------------------------------------------------- */

.records-timeline {
  margin-bottom: 40px;
}

.records-figure {
  margin: 18px 0 26px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-card);
  overflow: hidden;
}

.records-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}

.records-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--c-text-soft);
  border-top: 1px solid var(--c-line-soft);
}

.timeline-group {
  margin-bottom: 26px;
}

.timeline-month {
  font-size: 17px;
  font-weight: 700;
  padding-left: 10px;
  border-left: 3px solid var(--c-accent);
  margin-bottom: 12px;
}

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

.timeline-item {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--c-line-soft);
}

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

.timeline-item:hover {
  background: #f9fbfd;
}

.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.record-date {
  font-size: 13px;
  color: var(--c-text-soft);
}

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

.record-target {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-text);
}

.record-summary {
  margin-top: 4px;
  font-size: 14px;
  color: var(--c-text-soft);
}

.change-types,
.record-fields,
.records-boundary,
.related-tasks {
  margin-bottom: 40px;
}

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

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

.change-type-name {
  font-size: 16px;
  font-weight: 700;
}

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

.record-fields .field-table,
.records-boundary .boundary-list,
.related-tasks .task-grid {
  margin-top: 18px;
}

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

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

.error-panel {
  padding: 46px 0 30px;
  text-align: center;
  border-bottom: 1px solid var(--c-line);
}

.error-code {
  font-family: var(--font-mono);
  font-size: 56px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--c-accent);
}

.error-title {
  margin-top: 10px;
  font-size: 28px;
  font-weight: 700;
}

.error-desc {
  margin: 12px auto 0;
  max-width: 620px;
  font-size: 15px;
  color: var(--c-text-soft);
}

.error-actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.btn {
  display: inline-block;
  min-height: 44px;
  padding: 10px 22px;
  font-size: 15px;
  line-height: 1.6;
  border-radius: var(--radius);
  border: 1px solid transparent;
}

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

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

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

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

.error-links {
  padding-top: 30px;
}

.error-link-list {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.error-link-list a {
  display: block;
  padding: 14px 16px;
  font-size: 15px;
  color: var(--c-text);
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.error-link-list a:hover {
  color: var(--c-accent);
  border-color: var(--c-accent);
}

.error-note {
  margin-top: 18px;
  font-size: 14px;
  color: var(--c-text-soft);
}

/* --------------------------------------------------------------------------
   responsive — 断点：960px / 768px / 480px
   -------------------------------------------------------------------------- */

@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
    padding: 34px 24px 28px;
  }

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

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

  .guide-progress {
    position: static;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 26px;
  }

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

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 0 16px;
    min-height: 56px;
  }

  .nav-toggle {
    display: flex;
  }

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 14px;
    border-top: 1px solid #232c3a;
  }

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

  .nav-link {
    display: block;
    padding: 12px 4px;
    font-size: 16px;
    border-bottom: 1px solid #232c3a;
    border-left: 3px solid transparent;
    border-bottom-color: #232c3a;
  }

  .nav-link.is-current {
    border-bottom-color: #232c3a;
    border-left-color: var(--c-accent);
  }

  .inner-main,
  .error-main {
    padding: 0 16px 44px;
  }

  .page-header {
    padding: 8px 0 18px;
    margin-bottom: 22px;
  }

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

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

  .hero-inner {
    padding: 28px 16px 24px;
  }

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

  .hero-boundary {
    padding: 12px 16px 18px;
  }

  .hero-visual,
  .cat-overview,
  .collection-entry,
  .records-brief,
  .guide-brief,
  .site-index {
    padding-left: 16px;
    padding-right: 16px;
  }

  .cat-table,
  .catalog-list {
    border: 0;
    background: none;
    overflow: visible;
  }

  .cat-row,
  .catalog-row {
    grid-template-columns: minmax(0, 1fr);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    background: var(--c-card);
    margin-bottom: 12px;
    overflow: hidden;
  }

  .cat-row:last-child,
  .catalog-row:last-child {
    margin-bottom: 0;
  }

  .cat-row-head {
    display: none;
  }

  .cat-cell,
  .catalog-row > span {
    border-right: 0;
    border-bottom: 1px solid var(--c-line-soft);
  }

  .cat-cell:last-child,
  .catalog-row > span:last-child {
    border-bottom: 0;
  }

  .cat-name,
  .catalog-name {
    background: #f8f9fb;
  }

  .cat-group {
    border: 1px solid var(--c-line);
    border-radius: var(--radius-sm);
  }

  .collection-grid,
  .brief-timeline,
  .guide-columns,
  .prepare-grid,
  .change-type-grid,
  .task-grid,
  .related-grid,
  .index-grid,
  .error-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .step-item {
    grid-template-columns: 36px minmax(0, 1fr);
    grid-template-areas:
      "index name"
      "index text"
      "index state";
    gap: 4px 12px;
  }

  .step-state {
    justify-self: start;
    align-self: start;
  }

  .timeline-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

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

  .field-name {
    border-right: 0;
    border-bottom: 1px solid var(--c-line-soft);
  }

  .field-table-body th {
    width: 104px;
  }

  .faq-answer {
    padding-left: 18px;
  }

  .footer-inner {
    padding: 32px 16px 20px;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
  }

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

  .footer-bottom {
    padding: 14px 16px 22px;
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 24px;
  }

  .error-code {
    font-size: 44px;
  }

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

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

  .field-table-body th {
    width: 92px;
    padding: 9px 10px;
  }

  .field-table-body td {
    padding: 9px 10px;
  }
}

/* 减弱动效偏好 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}