/* ==========================================================================
   飘花伦理电影 · 全站样式
   双色信息风：深墨蓝主色承担操作与链接，暖橙辅色标注分类与状态
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. base — 变量、重置、排版基准
   -------------------------------------------------------------------------- */

:root {
  --c-primary: #1f3a5f;
  --c-primary-dark: #16293f;
  --c-primary-soft: #e8eef6;
  --c-accent: #c8622a;
  --c-accent-soft: #fbeee6;
  --c-bg: #f5f6f8;
  --c-surface: #ffffff;
  --c-text: #23272e;
  --c-text-soft: #5b6472;
  --c-text-mute: #7b8494;
  --c-border: #d8dce3;
  --c-border-soft: #e6e9ee;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC",
    sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, "Courier New",
    monospace;

  --w-page: 1120px;
  --w-prose: 760px;
  --h-header: 64px;
  --r-card: 6px;
  --r-pill: 4px;

  --sp-1: 6px;
  --sp-2: 12px;
  --sp-3: 18px;
  --sp-4: 26px;
  --sp-5: 38px;
  --sp-6: 56px;

  --shadow-card: 0 1px 2px rgba(31, 58, 95, 0.06);
  --shadow-lift: 0 6px 18px rgba(31, 58, 95, 0.1);
  --t-fast: 160ms ease;
}

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

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

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

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

p {
  margin: 0;
}

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

dl,
dd,
dt,
figure,
figcaption {
  margin: 0;
}

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

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color var(--t-fast), border-color var(--t-fast),
    background-color var(--t-fast), transform var(--t-fast);
}

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

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

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

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 60;
  padding: 10px 16px;
  background: var(--c-primary);
  color: #ffffff;
  border-radius: 0 0 var(--r-card) 0;
}

.skip-link:focus {
  left: 0;
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   2. layout — 页头、主容器、面包屑、页标题、页脚骨架
   -------------------------------------------------------------------------- */

/* 2.1 页头与主导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  width: 100%;
  max-width: var(--w-page);
  min-height: var(--h-header);
  margin: 0 auto;
  padding: 0 20px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--c-primary);
}

.brand:hover,
.brand:focus-visible {
  color: var(--c-primary);
}

.brand-name {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-tag {
  font-size: 12px;
  color: var(--c-text-mute);
  padding-left: 10px;
  border-left: 1px solid var(--c-border);
  line-height: 1.4;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-pill);
  background: var(--c-surface);
}

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

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

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

.nav-item {
  display: block;
}

.nav-link {
  display: block;
  padding: 8px 14px;
  color: var(--c-text);
  font-size: 15px;
  border-bottom: 2px solid transparent;
  border-radius: var(--r-pill);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--c-primary);
  background: var(--c-primary-soft);
}

.nav-link.is-current {
  color: var(--c-primary);
  font-weight: 700;
  border-bottom-color: var(--c-accent);
}

/* 2.2 主内容容器 */
.site-main {
  display: block;
}

.inner-main {
  width: 100%;
  max-width: var(--w-page);
  margin: 0 auto;
  padding: 0 20px var(--sp-6);
}

/* 2.3 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 18px 0 0;
  font-size: 14px;
  color: var(--c-text-mute);
}

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

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

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

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

/* 2.4 内页标题区 */
.page-header {
  max-width: var(--w-prose);
  padding: var(--sp-4) 0 var(--sp-5);
  border-bottom: 1px solid var(--c-border);
  margin-bottom: var(--sp-5);
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: 0;
}

.page-description {
  margin-top: var(--sp-2);
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

/* 2.5 页脚 */
.site-footer {
  background: var(--c-primary);
  color: #d7e0ec;
  margin-top: var(--sp-6);
}

.footer-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.4fr repeat(4, minmax(0, 1fr));
  gap: var(--sp-4);
  width: 100%;
  max-width: var(--w-page);
  margin: 0 auto;
  padding: var(--sp-5) 20px var(--sp-4);
}

.footer-brand {
  padding-right: var(--sp-3);
}

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

.footer-brand-desc {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: #b3c1d4;
}

.footer-group-title {
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
}

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

.footer-link {
  display: inline-block;
  min-height: 22px;
  font-size: 14px;
  line-height: 1.6;
  color: #c2cfe0;
}

.footer-link:hover,
.footer-link:focus-visible {
  color: #ffffff;
}

.back-to-top {
  position: absolute;
  right: 20px;
  bottom: var(--sp-4);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--r-card);
  color: #ffffff;
}

.back-to-top:hover,
.back-to-top:focus-visible {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.7);
  color: #ffffff;
}

.back-to-top-icon {
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 9px solid currentColor;
}

.footer-bottom {
  width: 100%;
  max-width: var(--w-page);
  margin: 0 auto;
  padding: 0 20px var(--sp-4);
}

.footer-note,
.footer-copy {
  font-size: 13px;
  line-height: 1.7;
  color: #9dacbf;
}

.footer-copy {
  margin-top: 6px;
}

/* --------------------------------------------------------------------------
   3. components — 通用按钮、标题组、列表、卡片、表格、FAQ
   -------------------------------------------------------------------------- */

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

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--c-primary-dark);
  color: #ffffff;
  transform: translateY(-1px);
}

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

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--c-accent);
  color: var(--c-accent);
  transform: translateY(-1px);
}

.section-head {
  max-width: var(--w-prose);
  margin-bottom: var(--sp-4);
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--c-primary);
}

.section-desc {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.section-intro {
  max-width: var(--w-prose);
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.section-intro a {
  color: var(--c-primary);
  border-bottom: 1px solid var(--c-border);
}

.section-intro a:hover,
.section-intro a:focus-visible {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

.section-foot {
  margin-top: var(--sp-3);
  font-size: 15px;
  color: var(--c-text-soft);
}

.text-link,
.inline-link {
  display: inline-block;
  min-height: 22px;
  color: var(--c-primary);
  font-weight: 600;
  border-bottom: 1px solid var(--c-border);
}

.text-link:hover,
.text-link:focus-visible,
.inline-link:hover,
.inline-link:focus-visible {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

/* 3.1 频道行条目（首页 / 频道分类页共用） */
.channel-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--c-border);
}

.channel-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 220px 96px;
  align-items: center;
  gap: var(--sp-3);
  padding: 16px 4px;
  border-bottom: 1px solid var(--c-border-soft);
  transition: background-color var(--t-fast), box-shadow var(--t-fast);
}

.channel-row:hover {
  background: var(--c-surface);
  box-shadow: inset 3px 0 0 var(--c-accent);
}

.channel-code,
.channel-no {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-accent);
}

.channel-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.channel-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-text);
}

.channel-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-soft);
}

.channel-type,
.channel-meta {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-text-mute);
}

.channel-meta-label {
  display: inline-block;
  min-width: 62px;
  color: var(--c-text-soft);
  font-weight: 600;
}

.channel-bound {
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-text-mute);
}

.channel-link {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-primary);
  border: 1px solid var(--c-border);
  border-radius: var(--r-pill);
  white-space: nowrap;
}

.channel-link::after {
  content: "→";
  font-size: 13px;
  color: var(--c-accent);
}

.channel-link:hover,
.channel-link:focus-visible {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

/* 3.2 字段口径表 */
.field-table {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--c-border);
}

.field-table dt.field-name {
  padding: 12px 12px 12px 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-primary);
  border-bottom: 1px solid var(--c-border-soft);
}

.field-table dd.field-meaning {
  padding: 12px 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-soft);
  border-bottom: 1px solid var(--c-border-soft);
}

/* 3.3 边界清单 */
.bound-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bound-item {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.bound-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  background: var(--c-accent);
  border-radius: 1px;
}

/* 3.4 相关入口列表 */
.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--sp-2);
  border-top: 1px solid var(--c-border);
  padding-top: var(--sp-3);
}

.related-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.related-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-primary);
}

.related-link:hover,
.related-link:focus-visible {
  color: var(--c-accent);
}

.related-note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-text-mute);
}

/* 3.5 折叠问答 */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid var(--c-border);
  padding-top: var(--sp-3);
}

.faq-item {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  transition: border-color var(--t-fast);
}

.faq-item[open] {
  border-color: var(--c-primary);
}

.faq-question {
  position: relative;
  padding: 14px 44px 14px 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-primary);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  line-height: 1;
  color: var(--c-accent);
}

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

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

.faq-answer p {
  padding-top: 12px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

/* --------------------------------------------------------------------------
   4. pages — 首页与各内页模块
   -------------------------------------------------------------------------- */

/* 4.1 首页 */
.fact-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  background: var(--c-primary-dark);
  color: #c6d3e4;
}

.fact-bar-text {
  width: 100%;
  max-width: var(--w-page);
  margin: 0 auto;
  padding: 9px 20px;
  font-size: 13px;
  line-height: 1.6;
}

.fact-bar-link {
  flex: 0 0 auto;
  margin-right: 20px;
  padding: 9px 0;
  font-size: 13px;
  color: #ffffff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.4);
  white-space: nowrap;
}

.fact-bar-link:hover,
.fact-bar-link:focus-visible {
  color: #ffd8bf;
  border-bottom-color: #ffd8bf;
}

.home-main {
  padding-bottom: var(--sp-6);
}

.hero {
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 460px);
  gap: var(--sp-5);
  align-items: center;
  width: 100%;
  max-width: var(--w-page);
  margin: 0 auto;
  padding: var(--sp-5) 20px;
}

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

.hero-eyebrow {
  display: inline-block;
  padding: 3px 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-accent);
  background: var(--c-accent-soft);
  border-radius: var(--r-pill);
}

.hero-title {
  margin-top: var(--sp-2);
  font-size: 34px;
  font-weight: 700;
  color: var(--c-primary);
}

.hero-lead {
  margin-top: var(--sp-2);
  max-width: 34em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

.hero-note {
  margin-top: var(--sp-2);
  max-width: 34em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-mute);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.hero-media {
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--c-bg);
}

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

.hero-media figcaption {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-text-mute);
  border-top: 1px solid var(--c-border-soft);
}

.hero-quicklinks {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  width: 100%;
  max-width: var(--w-page);
  margin: 0 auto;
  padding: 0 20px var(--sp-4);
}

.quicklink-item {
  min-width: 0;
}

.quicklink {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-primary);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--r-pill);
}

.quicklink:hover,
.quicklink:focus-visible {
  background: var(--c-surface);
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.section {
  width: 100%;
  max-width: var(--w-page);
  margin: 0 auto;
  padding: var(--sp-6) 20px 0;
}

.section-channels .channel-row {
  grid-template-columns: 72px minmax(0, 1fr) 200px 92px;
}

.section-features .feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
}

.feature-card {
  display: flex;
  flex-direction: column;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: border-color var(--t-fast), transform var(--t-fast),
    box-shadow var(--t-fast);
}

.feature-card:hover {
  border-color: var(--c-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}

.feature-media {
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-border-soft);
}

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

.feature-name {
  padding: var(--sp-3) var(--sp-3) 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--c-text);
}

.feature-desc {
  padding: 8px var(--sp-3) 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.feature-meta {
  padding: 10px var(--sp-3) 0;
  font-size: 13px;
  color: var(--c-text-mute);
}

.feature-count {
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-accent);
  background: var(--c-accent-soft);
  border-radius: var(--r-pill);
}

.feature-link {
  margin: var(--sp-3) var(--sp-3) var(--sp-3);
  align-self: flex-start;
  display: inline-block;
  min-height: 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-primary);
  border-bottom: 1px solid var(--c-border);
}

.feature-link:hover,
.feature-link:focus-visible {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

.section-specs .specs-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: var(--sp-4);
  align-items: start;
}

.specs-col {
  min-width: 0;
  padding: var(--sp-3) var(--sp-4) var(--sp-4);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
}

.specs-subtitle {
  margin-bottom: var(--sp-2);
  padding-bottom: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-primary);
  border-bottom: 1px solid var(--c-border);
}

.specs-col-bounds .inline-link {
  margin-top: var(--sp-3);
  font-size: 14px;
}

.section-log .log-groups {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.log-stage {
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-accent);
  border-radius: var(--r-card);
}

.log-stage-name {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-primary);
}

.log-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
}

.log-item {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

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

.log-tags {
  margin-top: 10px;
  font-size: 13px;
  color: var(--c-text-mute);
}

.section-log .inline-link {
  margin-top: var(--sp-3);
  font-size: 14px;
}

.section-index .index-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--sp-2);
}

.index-col {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: var(--sp-3);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  transition: border-color var(--t-fast), transform var(--t-fast);
}

.index-col:hover {
  border-color: var(--c-accent);
  transform: translateY(-2px);
}

.index-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-primary);
}

.index-desc {
  flex: 1 1 auto;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-text-soft);
}

.index-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--c-primary);
  border-bottom: 1px solid var(--c-border);
  align-self: flex-start;
}

.index-link:hover,
.index-link:focus-visible {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

/* 4.2 频道分类页 */
.page-pindao .channel-table .channel-list {
  margin-top: var(--sp-2);
}

.page-pindao .channel-row {
  grid-template-columns: 72px minmax(0, 1fr) 96px;
  align-items: start;
  padding: 20px 4px;
}

.page-pindao .channel-no {
  padding-top: 2px;
}

.page-pindao .channel-body {
  gap: 6px;
}

.page-pindao .channel-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
}

.page-pindao .channel-link {
  margin-top: 2px;
}

.channel-figure {
  margin-top: var(--sp-4);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--c-surface);
}

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

.channel-figure figcaption {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-text-mute);
  border-top: 1px solid var(--c-border-soft);
}

.channel-fields .field-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
  margin-top: var(--sp-3);
}

.field-col {
  min-width: 0;
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
}

.field-col-title {
  margin-bottom: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-primary);
}

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

.field-name {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.field-name-list .field-name {
  position: relative;
  padding-left: 16px;
}

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

.channel-boundary .boundary-blocks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
  margin-top: var(--sp-3);
}

.boundary-block {
  min-width: 0;
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
}

.boundary-title {
  margin-bottom: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-primary);
}

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

.boundary-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.boundary-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--c-accent);
  border-radius: 1px;
}

.related-entry {
  padding-top: var(--sp-5);
}

.related-entry .section-title {
  margin-bottom: var(--sp-3);
}

/* 4.3 专题片单页 */
.page-zhuanti .section-inner {
  width: 100%;
}

.section-zhuanti-intro {
  padding-top: 0;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  gap: var(--sp-4);
  align-items: center;
}

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

.intro-text p {
  margin-top: var(--sp-2);
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

.intro-media {
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--c-surface);
}

.intro-media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  height: auto;
  object-fit: cover;
}

.intro-media figcaption {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-text-mute);
  border-top: 1px solid var(--c-border-soft);
}

.section-zhuanti-list .zhuanti-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
  margin-top: var(--sp-3);
}

.zhuanti-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: border-color var(--t-fast), transform var(--t-fast),
    box-shadow var(--t-fast);
}

.zhuanti-card:hover {
  border-color: var(--c-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}

.zhuanti-card-media {
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-border-soft);
}

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

.zhuanti-card-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1 1 auto;
  padding: var(--sp-3);
}

.zhuanti-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-primary);
}

.zhuanti-card-desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.zhuanti-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--c-border-soft);
  font-size: 13px;
  color: var(--c-text-mute);
}

.meta-label {
  color: var(--c-text-soft);
  font-weight: 600;
}

.meta-value {
  font-family: var(--font-mono);
  color: var(--c-accent);
}

.section-zhuanti-order .order-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: var(--sp-3);
  border-top: 1px solid var(--c-border);
}

.order-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: var(--sp-3);
  align-items: start;
  padding: 16px 4px;
  border-bottom: 1px solid var(--c-border-soft);
}

.order-index {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-accent);
}

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

.order-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-text);
}

.order-desc {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.section-zhuanti-map .map-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
  margin-top: var(--sp-3);
}

.map-column {
  min-width: 0;
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
}

.map-column-title {
  margin-bottom: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-primary);
}

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

.map-item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-soft);
}

.map-code {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--c-accent);
}

.section-zhuanti-map .section-foot {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.section-zhuanti-map .section-foot .text-link {
  font-size: 14px;
}

/* 4.4 浏览指引页 */
.page-zhinan .guide-tasks .guide-task-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
}

.guide-task {
  min-width: 0;
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  transition: border-color var(--t-fast);
}

.guide-task:hover {
  border-color: var(--c-accent);
}

.guide-task-title {
  margin-bottom: 10px;
  padding-bottom: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-primary);
  border-bottom: 1px solid var(--c-border-soft);
}

.field-list {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 0;
}

.guide-task .field-name {
  padding: 9px 10px 9px 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-primary);
  border-bottom: 1px solid var(--c-border-soft);
}

.guide-task .field-desc {
  padding: 9px 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
  border-bottom: 1px solid var(--c-border-soft);
}

.guide-task .field-desc a {
  color: var(--c-primary);
  border-bottom: 1px solid var(--c-border);
}

.guide-task .field-desc a:hover,
.guide-task .field-desc a:focus-visible {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

.guide-figure {
  margin-top: var(--sp-4);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--c-surface);
}

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

.guide-figure-caption {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-text-mute);
  border-top: 1px solid var(--c-border-soft);
}

.page-zhinan .guide-steps {
  padding-top: var(--sp-5);
}

.step-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--sp-2);
  counter-reset: none;
}

.step-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: var(--sp-3);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-top: 3px solid var(--c-primary);
  border-radius: var(--r-card);
}

.step-index {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-accent);
}

.step-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.step-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-text);
}

.step-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.step-text a {
  color: var(--c-primary);
  border-bottom: 1px solid var(--c-border);
}

.step-text a:hover,
.step-text a:focus-visible {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

.step-result {
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px solid var(--c-border-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-text-mute);
}

.page-zhinan .guide-faq {
  padding-top: var(--sp-5);
}

.related-entry .entry-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-2);
  border-top: 1px solid var(--c-border);
  padding-top: var(--sp-3);
}

.entry-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: var(--sp-3);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  transition: border-color var(--t-fast), transform var(--t-fast);
}

.entry-item:hover {
  border-color: var(--c-accent);
  transform: translateY(-2px);
}

.entry-link {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-primary);
}

.entry-link:hover,
.entry-link:focus-visible {
  color: var(--c-accent);
}

.entry-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-text-soft);
}

/* 4.5 整理记录页 */
.page-container {
  width: 100%;
}

.page-media {
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--c-surface);
  margin-bottom: var(--sp-5);
}

.page-media img {
  width: 100%;
  aspect-ratio: 21 / 9;
  height: auto;
  object-fit: cover;
}

.page-media-caption {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-text-mute);
  border-top: 1px solid var(--c-border-soft);
}

.page-jilu .section {
  max-width: none;
  padding: 0 0 var(--sp-5);
}

.stage-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-top: var(--sp-3);
}

.stage-block {
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-primary);
  border-radius: var(--r-card);
}

.stage-name {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--c-primary);
}

.stage-index {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-accent);
}

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

.stage-point {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

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

.stage-meta {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--c-border-soft);
  font-size: 13px;
  color: var(--c-text-mute);
}

.page-jilu .section-adjustments {
  padding-top: var(--sp-5);
}

.table-wrap {
  margin-top: var(--sp-3);
  overflow-x: auto;
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  background: var(--c-surface);
}

.data-table {
  min-width: 640px;
  font-size: 14px;
}

.data-table-caption {
  padding: 12px 14px;
  text-align: left;
  font-size: 13px;
  color: var(--c-text-mute);
  border-bottom: 1px solid var(--c-border-soft);
}

.data-table thead th {
  padding: 12px 14px;
  text-align: left;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-primary);
  background: var(--c-primary-soft);
  border-bottom: 1px solid var(--c-border);
  white-space: nowrap;
}

.data-table tbody td {
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-soft);
  border-bottom: 1px solid var(--c-border-soft);
  vertical-align: top;
}

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

.data-table tbody tr:hover {
  background: var(--c-bg);
}

.page-jilu .section-boundary {
  padding-top: var(--sp-5);
}

.boundary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
  margin-top: var(--sp-3);
}

.boundary-col {
  min-width: 0;
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
}

.boundary-heading {
  margin-bottom: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-primary);
}

.boundary-item {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-soft);
}

.boundary-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--c-accent);
  border-radius: 1px;
}

.page-jilu .section-related {
  padding-top: var(--sp-5);
}

/* 4.6 404 页 */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: var(--sp-6) 0;
}

.container {
  width: 100%;
  max-width: var(--w-page);
  margin: 0 auto;
  padding: 0 20px;
}

.error-wrap {
  max-width: 620px;
  padding: var(--sp-5) var(--sp-4);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  text-align: left;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-accent);
}

.error-title {
  margin-top: 8px;
  font-size: 28px;
  font-weight: 700;
  color: var(--c-primary);
}

.error-lead {
  margin-top: var(--sp-2);
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text-soft);
}

.error-hint {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-mute);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-4);
  padding-top: var(--sp-3);
  border-top: 1px solid var(--c-border-soft);
}

.error-links .text-link {
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   5. responsive — 900px 与 600px 两档断点
   -------------------------------------------------------------------------- */

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 0 16px;
  }

  .nav-toggle {
    display: flex;
  }

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    padding: 6px 0 12px;
    border-top: 1px solid var(--c-border);
  }

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

  .nav-link {
    min-height: 48px;
    display: flex;
    align-items: center;
    padding: 0 6px;
    border-bottom: 1px solid var(--c-border-soft);
    border-radius: 0;
    font-size: 16px;
  }

  .nav-link.is-current {
    border-bottom-color: var(--c-border-soft);
    box-shadow: inset 3px 0 0 var(--c-accent);
    padding-left: 14px;
  }

  .inner-main,
  .section,
  .hero-inner,
  .hero-quicklinks,
  .footer-inner,
  .footer-bottom,
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

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

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--sp-4);
    padding-top: var(--sp-4);
    padding-bottom: var(--sp-4);
  }

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

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

  .section {
    padding-top: var(--sp-5);
  }

  .channel-row,
  .section-channels .channel-row,
  .page-pindao .channel-row {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 10px 14px;
    align-items: start;
    padding: 16px 2px;
  }

  .channel-bound,
  .page-pindao .channel-link {
    grid-column: 2 / -1;
    justify-self: start;
  }

  .section-features .feature-grid,
  .section-specs .specs-columns,
  .channel-fields .field-columns,
  .channel-boundary .boundary-blocks,
  .intro-grid,
  .section-zhuanti-list .zhuanti-grid,
  .section-zhuanti-map .map-grid,
  .page-zhinan .guide-tasks .guide-task-grid,
  .boundary-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

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

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--sp-3);
  }

  .footer-brand {
    grid-column: 1 / -1;
    padding-right: 0;
  }

  .back-to-top {
    right: 16px;
    bottom: 16px;
  }

  .fact-bar {
    flex-wrap: wrap;
    gap: 0;
  }

  .fact-bar-link {
    margin: 0 16px 10px;
  }
}

@media (max-width: 600px) {
  body.site-body {
    font-size: 15px;
  }

  .brand-tag {
    display: none;
  }

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

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

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

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

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

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

  .field-table dt.field-name {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .field-table dd.field-meaning {
    padding-top: 4px;
  }

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

  .guide-task .field-name {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .guide-task .field-desc {
    padding-top: 4px;
  }

  .map-item {
    grid-template-columns: 56px minmax(0, 1fr);
  }

  .step-list,
  .related-entry .entry-list,
  .section-index .index-grid,
  .related-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .order-item {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 10px;
  }

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

  .back-to-top {
    position: static;
    margin: 0 16px var(--sp-3);
    width: 100%;
    max-width: 100%;
  }

  .error-wrap {
    padding: var(--sp-4) var(--sp-3);
  }

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

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