/* ==========================================================================
   飘花狂飙电视剧 · 全站样式
   手工艺目录风：亚麻白底 / 浅陶土分区 / 橄榄绿主强调 / 赭石编号
   分组：base · layout · components · pages · responsive
   ========================================================================== */

/* ==========================================================================
   base —— 变量、重置、排版基线
   ========================================================================== */

:root {
  --linen: #F7F4EE;
  --clay: #EDE4D6;
  --olive: #5B6B3A;
  --olive-deep: #46542C;
  --ochre: #A9642F;
  --ink: #2E2A24;
  --ink-soft: #5A5248;
  --line: #B9AE9C;
  --line-soft: #D6CDBD;
  --paper: #FFFDF8;

  --font-serif: Georgia, "Songti SC", "SimSun", "Noto Serif SC", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --wrap: 1120px;
  --pad: 24px;
  --radius: 6px;
  --radius-sm: 4px;
}

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

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

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

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
}

p {
  margin: 0;
}

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

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

a:hover {
  color: var(--olive-deep);
}

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

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

button {
  font: inherit;
  color: inherit;
}

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

/* ==========================================================================
   layout —— 骨架：页头 / 主导航 / 主容器 / 面包屑 / 页标题 / 页脚
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background-color: var(--linen);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px var(--pad);
}

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

.brand:hover {
  color: var(--olive-deep);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--olive);
  border-radius: var(--radius-sm);
  background-color: var(--clay);
  color: var(--olive-deep);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: flex-end;
}

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

.nav-link {
  display: inline-block;
  padding: 8px 12px;
  min-height: 44px;
  line-height: 28px;
  border-bottom: 2px solid transparent;
  color: var(--ink);
  font-size: 15px;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--olive-deep);
  border-bottom-color: var(--line);
}

.nav-link.is-current {
  color: var(--olive-deep);
  font-weight: 600;
  border-bottom-color: var(--olive);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--paper);
  cursor: pointer;
}

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

.site-main {
  display: block;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.home-main {
  padding-bottom: 8px;
}

.inner-main {
  padding-top: 22px;
  padding-bottom: 56px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

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

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

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

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

.page-header {
  padding: 22px 0 26px;
  margin-top: 18px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 34px;
  line-height: 1.3;
  font-weight: 600;
}

.page-description {
  margin-top: 12px;
  max-width: 46em;
  color: var(--ink-soft);
}

.page-lede {
  margin-top: 10px;
  max-width: 46em;
  color: var(--ink-soft);
}

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

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 38px var(--pad) 22px;
}

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

.footer-group-title {
  font-size: 16px;
  font-weight: 600;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.footer-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-list a {
  display: inline-block;
  min-height: 24px;
  color: var(--ink-soft);
  font-size: 15px;
}

.footer-list a:hover {
  color: var(--olive-deep);
  text-decoration: underline;
}

.footer-bottom {
  margin-top: 30px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: baseline;
  color: var(--ink-soft);
  font-size: 14px;
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--ink);
}

.footer-note {
  flex: 1 1 320px;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* ==========================================================================
   components —— 通用组件：编号标签 / 按钮 / 文字链 / 区块头 / 表格 / 折叠
   ========================================================================== */

.tag {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ochre);
  white-space: nowrap;
}

.tag-number {
  border-color: var(--ochre);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  border: 1px solid var(--olive);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}

.btn-primary {
  background-color: var(--olive);
  color: var(--paper);
}

.btn-primary:hover {
  background-color: var(--olive-deep);
  color: var(--paper);
  transform: translateY(-2px);
}

.btn-ghost {
  background-color: transparent;
  color: var(--olive-deep);
}

.btn-ghost:hover {
  background-color: var(--clay);
  color: var(--olive-deep);
  transform: translateY(-2px);
}

.text-link {
  display: inline-block;
  min-height: 24px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}

.text-link:hover {
  border-bottom-color: var(--olive);
}

.section {
  padding: 40px 0 0;
}

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

.section-title {
  font-size: 24px;
  line-height: 1.4;
}

.section-desc,
.section-note,
.section-intro {
  margin-top: 10px;
  max-width: 52em;
  color: var(--ink-soft);
}

.section-note {
  font-size: 15px;
}

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

.sub-title {
  font-size: 18px;
  line-height: 1.5;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.table-caption,
.field-table-caption {
  caption-side: top;
  text-align: left;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.field-table {
  border: 1px solid var(--line);
  background-color: var(--paper);
}

.field-table th,
.field-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
  vertical-align: top;
  font-size: 15px;
}

.field-table thead th {
  background-color: var(--clay);
  font-family: var(--font-sans);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ink);
}

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

/* ==========================================================================
   pages —— index.html 首页
   ========================================================================== */

.fact-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 10px var(--pad);
  border-bottom: 1px solid var(--line);
  background-color: var(--clay);
  font-size: 14px;
  color: var(--ink-soft);
}

.fact-bar-text {
  flex: 1 1 320px;
}

.fact-bar-stage {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ochre);
  white-space: nowrap;
}

/* 首屏定位区 */
.hero {
  padding: 44px 0 8px;
}

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

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

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ochre);
}

.hero-title {
  margin-top: 12px;
  font-size: 34px;
  line-height: 1.3;
}

.hero-lead {
  margin-top: 16px;
  max-width: 34em;
  color: var(--ink-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

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

.hero-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  overflow: hidden;
}

.hero-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.hero-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  color: var(--ink-soft);
}

.hero-recent {
  margin-top: 20px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--clay);
}

.hero-recent-title {
  font-size: 18px;
  line-height: 1.5;
}

.recent-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.recent-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
}

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

.recent-code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ochre);
}

.recent-name {
  font-weight: 600;
}

.recent-note {
  flex: 1 1 100%;
  font-size: 14px;
  color: var(--ink-soft);
}

/* 站点定位三卡 */
.positioning {
  padding-top: 44px;
}

.positioning-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.positioning-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.positioning-card:hover {
  border-color: var(--olive);
  transform: translateY(-2px);
}

.card-title {
  font-size: 18px;
  line-height: 1.5;
}

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

/* 题材频道方向总览 */
.channels-overview {
  padding-top: 44px;
}

.channel-rows {
  border-top: 1px solid var(--line);
}

.channel-row {
  display: grid;
  grid-template-columns: 88px minmax(140px, 200px) minmax(0, 1fr) 150px;
  gap: 16px;
  align-items: baseline;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line-soft);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.channel-row:hover {
  border-color: var(--olive);
  transform: translateY(-2px);
}

.channels-overview .channel-code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ochre);
}

.channels-overview .channel-name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
}

.channels-overview .channel-scope {
  color: var(--ink-soft);
  font-size: 15px;
  min-width: 0;
}

.channels-overview .channel-order {
  font-size: 14px;
  color: var(--olive-deep);
  text-align: right;
}

/* 专题片单入口 */
.playlists-entry {
  padding-top: 44px;
}

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

.playlist-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  overflow: hidden;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.playlist-card:hover {
  border-color: var(--olive);
  transform: translateY(-2px);
}

.playlist-figure {
  margin: 0;
}

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

.playlist-body {
  padding: 16px 18px 18px;
}

.playlist-code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ochre);
}

.playlist-title {
  margin-top: 8px;
  font-size: 18px;
  line-height: 1.5;
}

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

/* 查阅顺序四步 */
.browse-steps {
  padding-top: 44px;
}

.step-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.step-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.step-item:hover {
  border-color: var(--olive);
  transform: translateY(-2px);
}

.step-item .step-code {
  align-self: flex-start;
  padding: 2px 8px;
  border: 1px solid var(--ochre);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ochre);
}

.step-item .step-name {
  font-size: 18px;
  line-height: 1.5;
}

.step-item .step-action {
  color: var(--ink-soft);
  font-size: 15px;
}

.step-item .step-check {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  color: var(--olive-deep);
}

/* 字段口径与收录边界摘要 */
.field-boundary {
  padding-top: 44px;
}

.field-boundary-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.field-summary,
.boundary-summary {
  min-width: 0;
}

.field-summary .field-table {
  margin-top: 14px;
}

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

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

.boundary-item {
  padding: 10px 14px;
  border-left: 3px solid var(--ochre);
  background-color: var(--clay);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 15px;
  color: var(--ink);
}

.boundary-note {
  margin-top: 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

/* 站内栏目索引 */
.site-index {
  padding-top: 44px;
}

.index-columns {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.index-column {
  min-width: 0;
}

.index-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  color: var(--ink);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.index-link:hover {
  border-color: var(--olive);
  transform: translateY(-2px);
  color: var(--ink);
}

.index-code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ochre);
}

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

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

/* ==========================================================================
   pages —— phkbdsj/channels.html 题材频道
   ========================================================================== */

.channel-table-section .channel-rows {
  border-top: 1px solid var(--line);
}

.channel-table-section .channel-row {
  grid-template-columns: 96px minmax(0, 1fr) 160px;
  align-items: start;
}

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

.channel-row-name {
  font-size: 18px;
  line-height: 1.5;
}

.channel-row-scope {
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 15px;
}

.channel-row-order {
  font-size: 14px;
  color: var(--olive-deep);
  text-align: right;
}

.channel-detail-section .channel-detail {
  display: grid;
  grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
  gap: 26px;
  align-items: start;
  padding: 24px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.channel-detail-media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  overflow: hidden;
}

.channel-detail-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.channel-detail-caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  color: var(--ink-soft);
}

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

.channel-detail-name {
  font-size: 18px;
  line-height: 1.5;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.channel-detail-text {
  margin-top: 12px;
  color: var(--ink-soft);
}

.channel-detail-exclude {
  margin-top: 12px;
  padding: 10px 14px;
  border-left: 3px solid var(--ochre);
  background-color: var(--clay);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 15px;
}

.channel-order-section .order-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.order-step {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.order-step:hover {
  border-color: var(--olive);
  transform: translateY(-2px);
}

.order-step .tag {
  align-self: flex-start;
}

.order-step-name {
  font-size: 18px;
  line-height: 1.5;
}

.order-step-text {
  color: var(--ink-soft);
  font-size: 15px;
}

.channel-order-note {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 15px;
}

/* ==========================================================================
   pages —— phkbdsj/playlists.html 专题片单
   ========================================================================== */

.playlist-table-section .playlist-rows {
  border-top: 1px solid var(--line);
}

.playlist-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) 150px 170px;
  gap: 16px;
  align-items: start;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line-soft);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.playlist-row:hover {
  border-color: var(--olive);
  transform: translateY(-2px);
}

.playlist-row .row-code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ochre);
}

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

.row-name {
  font-size: 18px;
  line-height: 1.5;
}

.row-scope {
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 15px;
}

.playlist-row .row-channel,
.playlist-row .row-count {
  font-size: 14px;
  color: var(--olive-deep);
}

.playlist-row .row-count {
  text-align: right;
}

.rules-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: start;
}

.rules-column {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  min-width: 0;
}

.rules-title {
  font-size: 18px;
  line-height: 1.5;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
}

.rules-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rules-list li {
  position: relative;
  padding-left: 18px;
  color: var(--ink-soft);
  font-size: 15px;
}

.rules-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--ochre);
  border-radius: 1px;
}

.playlist-channel-layout {
  display: grid;
  grid-template-columns: minmax(0, 360px) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.channel-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  overflow: hidden;
}

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

.channel-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  color: var(--ink-soft);
}

.playlist-channel-table {
  border: 1px solid var(--line);
  background-color: var(--paper);
}

.playlist-channel-table th,
.playlist-channel-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
  vertical-align: top;
  font-size: 15px;
}

.playlist-channel-table thead th {
  background-color: var(--clay);
  font-size: 14px;
  font-weight: 600;
}

.playlist-channel-table tbody th {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ochre);
  font-weight: 400;
  white-space: nowrap;
}

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

.playlist-channel-section .section-note {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

/* ==========================================================================
   pages —— phkbdsj/browse-guide.html 浏览顺序
   ========================================================================== */

.guide-steps,
.guide-checks,
.guide-faq,
.guide-links {
  padding-top: 44px;
}

.guide-step {
  display: grid;
  grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
  gap: 26px;
  align-items: start;
  padding: 24px 0;
  border-bottom: 1px solid var(--line-soft);
}

.guide-step:last-of-type {
  border-bottom: 0;
}

.guide-step-media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  overflow: hidden;
}

.guide-step-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.guide-step-media figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  color: var(--ink-soft);
}

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

.guide-step-body .step-index,
.check-column .step-index {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid var(--ochre);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ochre);
}

.guide-step-title {
  margin-top: 10px;
  font-size: 18px;
  line-height: 1.5;
}

.guide-step-body p {
  margin-top: 10px;
  color: var(--ink-soft);
}

.guide-step-body .guide-step-action {
  padding: 10px 14px;
  border-left: 3px solid var(--olive);
  background-color: var(--clay);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 15px;
}

.guide-step-action strong {
  color: var(--ink);
}

.check-columns {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.check-column {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  min-width: 0;
}

.check-title {
  margin-top: 10px;
  font-size: 18px;
  line-height: 1.5;
}

.check-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.check-list li {
  position: relative;
  padding-left: 18px;
  color: var(--ink-soft);
  font-size: 15px;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--olive);
  border-radius: 1px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  margin-bottom: 12px;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 44px;
  padding: 14px 18px;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  list-style: none;
}

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

.faq-question::after {
  content: "展开";
  flex: 0 0 auto;
  padding: 2px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  font-weight: 400;
  color: var(--olive-deep);
}

.faq-item[open] .faq-question::after {
  content: "收起";
  border-color: var(--olive);
  color: var(--olive-deep);
}

.faq-answer {
  padding: 0 18px 16px;
  border-top: 1px solid var(--line-soft);
}

.faq-answer p {
  margin-top: 12px;
  color: var(--ink-soft);
}

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

.guide-link-list a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  font-size: 15px;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.guide-link-list a:hover {
  border-color: var(--olive);
  transform: translateY(-2px);
}

/* ==========================================================================
   pages —— phkbdsj/field-notes.html 字段与边界
   ========================================================================== */

.section-fields .field-figure {
  margin: 0 0 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  overflow: hidden;
}

.section-fields .field-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.section-fields .field-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  color: var(--ink-soft);
}

.field-table-wrap {
  overflow-x: auto;
}

.field-col-name {
  width: 220px;
}

.field-table .field-name {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  font-weight: 400;
  color: var(--ochre);
  white-space: nowrap;
}

.field-table .field-rule {
  color: var(--ink-soft);
}

.stage-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.stage-row {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line-soft);
}

.stage-tag {
  align-self: start;
  justify-self: start;
  padding: 2px 8px;
  border: 1px solid var(--ochre);
  border-radius: var(--radius-sm);
  background-color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ochre);
  white-space: nowrap;
}

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

.stage-name {
  font-size: 18px;
  line-height: 1.5;
}

.stage-text {
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 15px;
}

.section-boundary .boundary-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
}

.section-boundary .boundary-mark {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ochre);
}

.section-boundary .boundary-text {
  min-width: 0;
}

.section-boundary .boundary-note {
  margin-top: 18px;
  font-size: 15px;
}

.section-related .related-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.related-col {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  min-width: 0;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.related-col:hover {
  border-color: var(--olive);
  transform: translateY(-2px);
}

.related-heading {
  font-size: 18px;
  line-height: 1.5;
}

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

/* ==========================================================================
   pages —— 404.html
   ========================================================================== */

.error-main {
  padding-top: 56px;
  padding-bottom: 64px;
}

.error-panel {
  max-width: 620px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
}

.error-code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ochre);
}

.error-panel h1 {
  margin-top: 12px;
  font-size: 34px;
  line-height: 1.3;
}

.error-text {
  margin-top: 14px;
  color: var(--ink-soft);
}

.error-hint-list {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.error-hint-list li {
  position: relative;
  padding-left: 18px;
  color: var(--ink-soft);
  font-size: 15px;
}

.error-hint-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--olive);
  border-radius: 1px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

/* ==========================================================================
   responsive —— 1024px / 640px 两个断点
   ========================================================================== */

@media (max-width: 1024px) {
  .site-nav {
    flex: 0 0 auto;
    position: relative;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    min-width: 200px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background-color: var(--paper);
    box-shadow: 0 8px 20px rgba(46, 42, 36, 0.12);
  }

  .nav-list:not(.is-open) {
    display: none;
  }

  .nav-link {
    display: block;
    width: 100%;
    border-bottom: 1px solid var(--line-soft);
    border-left: 2px solid transparent;
  }

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

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

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

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

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

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

  .playlist-channel-layout,
  .channel-detail-section .channel-detail,
  .guide-step {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .channel-detail-media,
  .guide-step-media {
    max-width: 520px;
  }

  .field-boundary-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

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

@media (max-width: 640px) {
  :root {
    --pad: 16px;
  }

  body {
    font-size: 16px;
  }

  .header-inner {
    gap: 12px;
    padding: 12px var(--pad);
  }

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

  .hero {
    padding-top: 30px;
  }

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

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

  .section,
  .positioning,
  .channels-overview,
  .playlists-entry,
  .browse-steps,
  .field-boundary,
  .site-index,
  .guide-steps,
  .guide-checks,
  .guide-faq,
  .guide-links {
    padding-top: 32px;
  }

  .fact-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

  .positioning-grid,
  .playlist-cards,
  .step-list,
  .channel-order-section .order-steps,
  .check-columns,
  .rules-columns,
  .related-columns,
  .guide-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .channels-overview .channel-order {
    text-align: left;
  }

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

  .channel-row-order {
    text-align: left;
  }

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

  .playlist-row .row-count {
    text-align: left;
  }

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

  .field-col-name {
    width: auto;
  }

  .field-table th,
  .field-table td,
  .playlist-channel-table th,
  .playlist-channel-table td {
    padding: 10px 12px;
    font-size: 14px;
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .error-panel {
    padding: 24px 18px;
  }

  .error-actions .btn {
    flex: 1 1 100%;
  }
}