/* ==========================================================================
   飘花电影在线观看 · 全站样式
   复古终端目录风格：等宽字体承担编号与字段，正文用系统无衬线
   ========================================================================== */

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

:root {
  --bg: #f4f1ea;
  --ink: #1f2328;
  --ink-soft: #5c6470;
  --brand: #1f6f5c;
  --accent: #d9a441;
  --line: #d8d3c7;
  --card: #fffdf8;
  --mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --shell: 1180px;
  --radius: 6px;
  --radius-sm: 4px;
}

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

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

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.75;
  font-weight: 400;
}

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

p {
  margin: 0;
}

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

img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 0;
}

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

a:hover,
a:focus-visible {
  text-decoration: underline;
}

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

figure {
  margin: 0;
}

figcaption {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.6;
}

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

/* --------------------------------------------------------------------------
   layout · 全站外壳
   -------------------------------------------------------------------------- */

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

.site-header {
  background-color: var(--card);
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 20;
}

.header-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  flex: 0 0 auto;
}

.brand:hover,
.brand:focus-visible {
  text-decoration: none;
}

.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-sm);
  background-color: var(--accent);
  box-shadow: 6px 6px 0 0 rgba(31, 111, 92, 0.22);
  flex: 0 0 auto;
}

.brand-name {
  font-family: var(--mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0;
}

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

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

.nav-list li {
  display: block;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  background-color: #ece7db;
  text-decoration: none;
}

.nav-list a.is-current {
  background-color: var(--brand);
  color: #fdfcf8;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--card);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

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

/* 次级标签栏 */
.tag-bar {
  border-top: 1px solid var(--line);
  background-color: #f0ece1;
}

.tag-bar-label,
.tag-list {
  max-width: var(--shell);
  margin: 0 auto;
}

.tag-bar .tag-bar-label {
  display: block;
  padding: 8px 24px 0;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 24px 12px;
}

.tag-list a {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background-color: var(--card);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 12px;
}

.tag-list a:hover,
.tag-list a:focus-visible {
  border-color: var(--brand);
  color: var(--brand);
  text-decoration: none;
}

.site-main {
  flex: 1 1 auto;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 32px 24px 56px;
}

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

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

/* --------------------------------------------------------------------------
   components · 通用区块与按钮
   -------------------------------------------------------------------------- */

.section {
  margin-top: 48px;
}

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

.section-title {
  font-size: 22px;
  font-weight: 700;
  padding-left: 12px;
  border-left: 4px solid var(--accent);
}

.section-desc,
.section-text,
.section-lead {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 15px;
  max-width: 76ch;
}

.section-text + .section-text {
  margin-top: 12px;
}

.section-note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--ink-soft);
}

.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--brand);
  color: #fdfcf8;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: #185645;
  color: #fdfcf8;
  text-decoration: none;
}

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

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background-color: #e6efeb;
  text-decoration: none;
}

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

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

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

.breadcrumb-sep {
  color: var(--accent);
  font-family: var(--mono);
}

.breadcrumb-current {
  color: var(--ink);
  font-weight: 600;
}

/* 内页标题区 */
.page-header {
  margin-top: 18px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
}

.page-description {
  margin-top: 12px;
  max-width: 76ch;
  color: var(--ink-soft);
  font-size: 15px;
}

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */

.fact-bar {
  background-color: var(--ink);
}

.fact-bar-text {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 8px 24px;
  color: #eae6dc;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.6;
}

/* 全宽列表首屏 */
.hero-list {
  margin-top: 0;
}

.hero-title {
  font-size: 34px;
  font-weight: 700;
}

.hero-sub {
  margin-top: 12px;
  max-width: 76ch;
  color: var(--ink-soft);
}

.hero-feature {
  margin-top: 22px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 0;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.hero-media {
  min-width: 0;
  background-color: #e7e2d6;
}

.hero-media img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  max-height: 420px;
  object-fit: cover;
}

.hero-feature-body {
  min-width: 0;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.entry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
}

.tag-channel {
  background-color: #e6efeb;
  color: var(--brand);
}

.tag-topic {
  background-color: #f6ecd6;
  color: #8a6415;
}

.hero-feature-name {
  font-size: 22px;
}

.hero-feature-desc {
  color: var(--ink-soft);
}

.hero-feature-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-soft);
}

.hero-feature-meta li {
  position: relative;
}

.hero-feature-meta li + li::before {
  content: "·";
  position: absolute;
  left: -11px;
  color: var(--accent);
}

.hero-feature-body .btn-primary {
  align-self: flex-start;
  margin-top: 4px;
}

.hero-compact {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 18px;
}

.compact-item {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 10px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.compact-item img {
  width: 96px;
  height: 62px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background-color: #e7e2d6;
}

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

.compact-name {
  font-size: 15px;
  font-weight: 600;
}

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

.compact-name a:hover,
.compact-name a:focus-visible {
  color: var(--brand);
}

.compact-meta {
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-soft);
}

/* 题材频道总览 */
.channel-rows {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.channel-row {
  display: grid;
  grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
  gap: 18px;
  align-items: baseline;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
}

.channel-key {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.channel-no {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  color: #8a6415;
  background-color: #f6ecd6;
  border-radius: var(--radius-sm);
  padding: 2px 7px;
  flex: 0 0 auto;
}

.channel-name {
  font-size: 17px;
  font-weight: 600;
}

.channel-desc {
  color: var(--ink-soft);
  min-width: 0;
}

/* 专题片单入口 */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.topic-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.topic-media {
  min-width: 0;
  background-color: #e7e2d6;
}

.topic-media img {
  width: 100%;
  height: 100%;
  min-height: 150px;
  object-fit: cover;
}

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

.topic-name {
  font-size: 17px;
}

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

.topic-name a:hover,
.topic-name a:focus-visible {
  color: var(--brand);
}

.topic-desc {
  color: var(--ink-soft);
  font-size: 14px;
}

/* 视频卡片区 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.video-card {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.card-media {
  min-width: 0;
  background-color: #e7e2d6;
}

.card-media img {
  width: 100%;
  height: 100%;
  min-height: 120px;
  object-fit: cover;
}

.card-body {
  min-width: 0;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

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

.card-name a:hover,
.card-name a:focus-visible {
  color: var(--brand);
}

.card-channel {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--brand);
}

.card-desc {
  color: var(--ink-soft);
  font-size: 14px;
}

/* 四步浏览顺序 */
.step-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.step-item {
  position: relative;
  min-width: 0;
  padding: 18px 16px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
}

.step-no {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--brand);
  background-color: #e6efeb;
  border-radius: var(--radius-sm);
  padding: 2px 7px;
}

.step-name {
  margin-top: 10px;
  font-size: 17px;
  font-weight: 600;
}

.step-check {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 14px;
}

/* 字段口径与收录边界摘要 */
.boundary-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.boundary-col {
  min-width: 0;
  padding: 20px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.boundary-heading {
  font-size: 17px;
  font-weight: 600;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.boundary-list {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.boundary-list li {
  display: grid;
  grid-template-columns: minmax(120px, 168px) minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 14px;
  color: var(--ink-soft);
}

.field-name {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink);
  background-color: #f1ece0;
  border-radius: var(--radius-sm);
  padding: 2px 7px;
  justify-self: start;
  white-space: nowrap;
}

/* 站内栏目索引 */
.index-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.index-col {
  min-width: 0;
  padding: 16px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.index-name {
  font-size: 16px;
  font-weight: 600;
}

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

.index-name a:hover,
.index-name a:focus-visible {
  color: var(--brand);
}

.index-desc {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages · 题材频道
   -------------------------------------------------------------------------- */

.channel-intro p + p {
  margin-top: 12px;
}

.channel-intro p {
  color: var(--ink-soft);
  max-width: 76ch;
}

.channel-table .channel-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 22px;
  align-items: start;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.channel-table .channel-row:first-of-type {
  border-top: 1px solid var(--line);
}

.channel-row-main {
  min-width: 0;
}

.channel-row-main .channel-no {
  display: inline-block;
}

.channel-row-main .channel-name {
  display: inline-block;
  margin-left: 10px;
  font-size: 18px;
}

.channel-direction {
  margin-top: 10px;
  color: var(--ink-soft);
}

.channel-row-side {
  min-width: 0;
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.channel-figure {
  min-width: 0;
}

.channel-figure img {
  width: 148px;
  height: 96px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background-color: #e7e2d6;
}

.channel-figure figcaption {
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 12px;
}

.channel-boundary {
  min-width: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

/* 频道边界对照 */
.compare-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.compare-col {
  min-width: 0;
  padding: 20px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.compare-col-in {
  border-top: 3px solid var(--brand);
}

.compare-col-out {
  border-top: 3px solid var(--accent);
}

.compare-heading {
  font-size: 17px;
  font-weight: 600;
}

.compare-list {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.compare-list li {
  position: relative;
  padding-left: 16px;
  color: var(--ink-soft);
  font-size: 14px;
}

.compare-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background-color: var(--accent);
}

/* 频道与专题对应 */
.map-list {
  border-top: 1px solid var(--line);
}

.map-row {
  display: grid;
  grid-template-columns: minmax(140px, 200px) 40px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
}

.map-channel {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.map-arrow {
  font-family: var(--mono);
  color: var(--accent);
  text-align: center;
}

.map-topic {
  color: var(--ink-soft);
  min-width: 0;
}

/* 频道整理记录 */
.log-group + .log-group {
  margin-top: 22px;
}

.log-stage {
  font-size: 17px;
  font-weight: 600;
  padding-left: 12px;
  border-left: 3px solid var(--accent);
}

.log-list {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

.log-list li {
  position: relative;
  padding-left: 16px;
  color: var(--ink-soft);
  font-size: 14px;
}

.log-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background-color: var(--line);
}

/* 下一步入口 */
.next-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.next-links li {
  min-width: 0;
}

.next-links a {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 12px 16px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-weight: 600;
  color: var(--ink);
}

.next-links a:hover,
.next-links a:focus-visible {
  border-color: var(--brand);
  color: var(--brand);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   pages · 专题片单
   -------------------------------------------------------------------------- */

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

.zhuanti-overview-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 0.8fr);
  gap: 16px;
  align-items: center;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
}

.zhuanti-code {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  color: #8a6415;
  background-color: #f6ecd6;
  border-radius: var(--radius-sm);
  padding: 2px 7px;
  justify-self: start;
}

.zhuanti-overview-main {
  min-width: 0;
}

.zhuanti-name {
  font-size: 16px;
  font-weight: 600;
}

.zhuanti-theme {
  margin-top: 4px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.zhuanti-channel,
.zhuanti-count {
  min-width: 0;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-soft);
}

/* 专题详情块 */
.zhuanti-block {
  display: grid;
  grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding: 24px;
  margin-top: 18px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.zhuanti-figure {
  min-width: 0;
}

.zhuanti-figure img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background-color: #e7e2d6;
}

.zhuanti-figure figcaption {
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 12px;
}

.zhuanti-block-body {
  min-width: 0;
}

.zhuanti-block-title {
  font-size: 19px;
  padding-left: 12px;
  border-left: 3px solid var(--accent);
}

.zhuanti-block-body > p {
  margin-top: 12px;
  color: var(--ink-soft);
}

.zhuanti-basis-label {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink);
}

.zhuanti-basis-list {
  margin-top: 10px;
  display: grid;
  gap: 8px;
}

.zhuanti-basis-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

.zhuanti-basis-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background-color: var(--accent);
}

/* 表格 */
.data-table {
  border: 1px solid var(--line);
  background-color: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
}

.data-table caption {
  caption-side: top;
  text-align: left;
  padding: 0 0 10px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-soft);
}

.data-table th,
.data-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  vertical-align: top;
}

.data-table thead th {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink);
  background-color: #f1ece0;
  white-space: nowrap;
}

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

.data-table tbody td {
  color: var(--ink-soft);
}

.zhuanti-map-table tbody td:first-child {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--ink);
}

/* 专题整理记录 */
.log-stage-list {
  display: grid;
  gap: 14px;
}

.log-stage-list .log-stage {
  min-width: 0;
  padding: 18px 20px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.log-stage-title {
  font-size: 16px;
  font-weight: 600;
}

.log-stage p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

/* 专题下一步 */
.next-link-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.next-link-list a {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 12px 16px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-weight: 600;
  color: var(--ink);
}

.next-link-list a:hover,
.next-link-list a:focus-visible {
  border-color: var(--brand);
  color: var(--brand);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   pages · 观看指南
   -------------------------------------------------------------------------- */

.guide-intro p + p {
  margin-top: 12px;
}

.guide-intro p {
  color: var(--ink-soft);
  max-width: 76ch;
}

.guide-steps .step-figure {
  margin: 0 0 18px;
}

.guide-steps .step-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--radius);
  background-color: #e7e2d6;
}

.guide-steps .step-figure figcaption {
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 12px;
}

.guide-steps .step-list {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.guide-steps .step-item {
  padding: 18px 16px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--brand);
  border-radius: var(--radius);
}

.step-index {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--brand);
  background-color: #e6efeb;
  border-radius: var(--radius-sm);
  padding: 2px 7px;
}

.guide-steps .step-name {
  margin-top: 10px;
  font-size: 17px;
  font-weight: 600;
}

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

.guide-steps .step-check {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-soft);
}

/* 入口核验检查点 */
.check-list {
  border-top: 1px solid var(--line);
}

.check-item {
  display: grid;
  grid-template-columns: minmax(150px, 220px) minmax(0, 1fr);
  gap: 18px;
  align-items: baseline;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
}

.check-name {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.check-desc {
  min-width: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

/* FAQ 折叠 */
.faq-list {
  display: grid;
  gap: 10px;
}

.faq-item {
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 18px;
}

.faq-question {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 12px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::before {
  content: "+";
  font-family: var(--mono);
  font-weight: 700;
  color: var(--brand);
  margin-right: 10px;
  flex: 0 0 auto;
}

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

.faq-answer {
  padding: 0 0 16px 24px;
  color: var(--ink-soft);
  font-size: 14px;
}

/* 反馈路径 */
.feedback-list {
  border-top: 1px solid var(--line);
}

.feedback-item {
  display: grid;
  grid-template-columns: minmax(150px, 220px) minmax(0, 1fr);
  gap: 18px;
  align-items: baseline;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
}

.feedback-type {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.feedback-desc {
  min-width: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

/* 指南相关链接 */
.guide-link-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.guide-link-item {
  min-width: 0;
  padding: 16px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.guide-link-item a {
  display: inline-block;
  font-weight: 600;
  color: var(--ink);
}

.guide-link-item a:hover,
.guide-link-item a:focus-visible {
  color: var(--brand);
}

.guide-link-note {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages · 整理记录
   -------------------------------------------------------------------------- */

.section-intro p + p {
  margin-top: 12px;
}

.section-intro p {
  color: var(--ink-soft);
  max-width: 76ch;
}

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

.section-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius);
  background-color: #e7e2d6;
}

.section-figure figcaption {
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 12px;
}

/* 字段口径表 */
.field-table {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--card);
  overflow: hidden;
}

.field-table-head,
.field-table-row {
  display: grid;
  grid-template-columns: minmax(120px, 0.8fr) minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 0;
}

.field-table-head {
  background-color: #f1ece0;
}

.field-table-row + .field-table-row {
  border-top: 1px solid var(--line);
}

.field-cell {
  min-width: 0;
  padding: 12px 14px;
  font-size: 14px;
  color: var(--ink-soft);
  border-left: 1px solid var(--line);
}

.field-cell:first-child {
  border-left: 0;
}

.field-table-head .field-cell {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink);
}

.field-table-row .field-cell.field-name {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  background-color: transparent;
  border-radius: 0;
  padding: 12px 14px;
}

.field-table-row .field-cell.field-mean,
.field-table-row .field-cell.field-range,
.field-table-row .field-cell.field-limit {
  color: var(--ink-soft);
}

/* 时间范围与更新方式 */
.range-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.range-col {
  min-width: 0;
  padding: 20px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.range-subtitle {
  font-size: 17px;
  font-weight: 600;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.range-col p {
  margin-top: 12px;
  color: var(--ink-soft);
  font-size: 14px;
}

.range-list {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

.range-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

.range-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background-color: var(--accent);
}

/* 按阶段分组的整理记录 */
.section-stages {
  display: block;
}

.stage-block {
  display: grid;
  grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.stage-block:last-child {
  border-bottom: 1px solid var(--line);
}

.stage-name {
  font-size: 17px;
  font-weight: 600;
  font-family: var(--mono);
}

.stage-list {
  min-width: 0;
  display: grid;
  gap: 8px;
}

.stage-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

.stage-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background-color: var(--line);
}

/* 收录边界与使用限制 */
.limit-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.limit-list li {
  min-width: 0;
  padding: 18px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.limit-name {
  font-size: 16px;
  font-weight: 600;
}

.limit-list p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

/* 相关入口 */
.related-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.related-list li {
  min-width: 0;
  padding: 16px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-list a {
  display: inline-block;
  font-weight: 600;
  color: var(--ink);
}

.related-list a:hover,
.related-list a:focus-visible {
  color: var(--brand);
}

.related-desc {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages · 404
   -------------------------------------------------------------------------- */

.error-main {
  padding-top: 40px;
}

.error-block {
  max-width: 720px;
  padding: 32px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
}

.error-code {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: #8a6415;
  background-color: #f6ecd6;
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  display: inline-block;
}

.error-title {
  margin-top: 14px;
  font-size: 34px;
}

.error-desc {
  margin-top: 12px;
  color: var(--ink-soft);
}

.error-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.error-hint {
  margin-top: 40px;
}

.error-hint-list {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.error-hint-list li {
  min-width: 0;
}

.error-hint-list a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 16px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-weight: 600;
  color: var(--ink);
}

.error-hint-list a:hover,
.error-hint-list a:focus-visible {
  border-color: var(--brand);
  color: var(--brand);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   layout · 页脚
   -------------------------------------------------------------------------- */

.site-footer {
  background-color: #1f2328;
  color: #cfcabd;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 36px 24px 24px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(4, minmax(0, 1fr));
  gap: 26px;
}

.footer-brand {
  min-width: 0;
}

.footer-brand-name {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 700;
  color: #f4f1ea;
}

.footer-brand-desc {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.7;
  color: #a8a294;
}

.footer-group {
  min-width: 0;
}

.footer-heading {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--accent);
}

.footer-list {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

.footer-list a {
  color: #cfcabd;
  font-size: 13.5px;
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: #f4f1ea;
}

.footer-bottom {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid #3a3f45;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
}

.footer-copy,
.footer-note {
  font-size: 12.5px;
  color: #a8a294;
}

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

@media (max-width: 1080px) {
  .index-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

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

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

@media (max-width: 900px) {
  .hero-feature {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-media img {
    min-height: 220px;
    max-height: 320px;
  }

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

  .topic-grid,
  .card-grid,
  .boundary-columns,
  .compare-pair,
  .range-columns,
  .limit-list,
  .related-list,
  .guide-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .zhuanti-overview-item {
    grid-template-columns: 56px minmax(0, 1fr);
    row-gap: 6px;
  }

  .zhuanti-overview-item .zhuanti-channel,
  .zhuanti-overview-item .zhuanti-count {
    grid-column: 2 / -1;
  }

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

  .field-cell {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .field-table-head .field-cell {
    border-top: 0;
  }

  .stage-block {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }
}

@media (max-width: 760px) {
  .header-inner {
    padding: 12px 16px;
    gap: 12px;
    flex-wrap: nowrap;
  }

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

  .nav-toggle {
    display: flex;
  }

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    padding: 6px 0 2px;
    border-top: 1px solid var(--line);
  }

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

  .nav-list a {
    display: flex;
    min-height: 46px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
  }

  .tag-list {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 8px 16px 12px;
    gap: 8px;
  }

  .tag-list li {
    flex: 0 0 auto;
  }

  .tag-list a {
    min-height: 34px;
    padding: 5px 12px;
    white-space: nowrap;
  }

  .tag-bar .tag-bar-label {
    padding: 8px 16px 0;
  }

  .fact-bar-text {
    padding: 8px 16px;
  }

  .site-main {
    padding: 24px 16px 44px;
  }

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

  .section {
    margin-top: 36px;
  }

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

  .hero-feature-body {
    padding: 18px;
  }

  .compact-item {
    grid-template-columns: 84px minmax(0, 1fr);
  }

  .compact-item img {
    width: 84px;
    height: 56px;
  }

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

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

  .topic-media img {
    min-height: 180px;
  }

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

  .card-media img {
    min-height: 180px;
  }

  .step-list,
  .guide-steps .step-list,
  .next-links,
  .next-link-list,
  .index-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .boundary-list li,
  .check-item,
  .feedback-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

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

  .channel-figure img {
    width: 100%;
    height: 180px;
  }

  .map-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .map-arrow {
    text-align: left;
  }

  .field-table-head {
    display: none;
  }

  .field-table-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    padding: 12px 14px;
  }

  .field-table-row .field-cell {
    padding: 2px 0;
    border-top: 0;
  }

  .field-table-row .field-cell.field-name {
    padding: 0 0 6px;
  }

  .zhuanti-figure img {
    height: 180px;
  }

  .guide-steps .step-figure img {
    height: 180px;
  }

  .section-figure img {
    height: 180px;
  }

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

  .footer-inner {
    padding: 28px 16px 20px;
  }

  .footer-top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }

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

@media (max-width: 420px) {
  .footer-top {
    grid-template-columns: minmax(0, 1fr);
  }

  .brand-name {
    font-size: 14px;
  }

  .hero-feature-meta {
    gap: 4px 14px;
  }

  .hero-feature-meta li + li::before {
    left: -9px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .video-card,
  .topic-card,
  .step-item,
  .index-col {
    transition: border-color 0.18s ease, background-color 0.18s ease;
  }

  .video-card:hover,
  .topic-card:hover,
  .step-item:hover,
  .index-col:hover {
    border-color: #b9b2a2;
  }
}