/* ==========================================================================
   光棍手机影视 · 全站样式
   视觉方向：物流运营风 —— 深色底、琥珀状态点、节点时间与设备照片
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base —— 变量、重置、排版
   -------------------------------------------------------------------------- */
:root {
  --bg: #101418;
  --bg-soft: #141a20;
  --card: #1a2026;
  --card-hover: #1f262d;
  --line: #2a333c;
  --line-strong: #3a4650;
  --text: #e8edf2;
  --text-dim: #9aa7b4;
  --text-mute: #7b8794;
  --amber: #f0a020;
  --amber-dim: #8a5f16;
  --ok: #3fb27f;
  --warn: #e05a4f;
  --radius: 6px;
  --radius-sm: 4px;
  --shell: 1120px;
  --gap: 20px;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.02), 0 8px 24px rgba(0, 0, 0, 0.28);
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
}

p {
  margin: 0;
}

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

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

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

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

figure {
  margin: 0;
}

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

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

time {
  font-variant-numeric: tabular-nums;
}

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

/* --------------------------------------------------------------------------
   layout —— 骨架：页头、导航、主容器、页脚
   -------------------------------------------------------------------------- */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 顶部状态条 */
.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 10px 24px;
  border-bottom: 1px solid var(--line);
}

.status-bar-text {
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.6;
}

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 20px;
  max-width: var(--shell);
  width: 100%;
  margin: 0 auto;
  padding: 14px 24px;
  background: rgba(16, 20, 24, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}

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

.brand-mark {
  position: relative;
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--amber-dim);
  background: var(--card);
}

.brand-mark::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: var(--amber);
}

.brand-text {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}

.brand:hover .brand-text {
  color: var(--amber);
}

/* 主导航 */
.site-nav {
  flex: 1 1 auto;
  min-width: 0;
}

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

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 12px;
  font-size: 15px;
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

.nav-link:hover {
  color: var(--text);
  background: var(--card);
  border-color: var(--line);
}

.nav-link.is-current {
  color: var(--amber);
  background: rgba(240, 160, 32, 0.08);
  border-color: var(--amber-dim);
}

.nav-item-extra {
  margin-left: auto;
}

.nav-item-extra .nav-link {
  color: var(--text);
  border-color: var(--line-strong);
}

/* 汉堡按钮（桌面隐藏） */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--card);
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 1px;
}

/* 主内容 */
.site-main {
  flex: 1 1 auto;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px 64px;
}

.home-main {
  padding-top: 28px;
}

.inner-main {
  padding-top: 18px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-mute);
  padding: 4px 0 16px;
}

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

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

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

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

/* 内页标题区 */
.page-header {
  padding: 0 0 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 34px;
}

.page-title {
  font-size: 32px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}

.page-description {
  max-width: 820px;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.8;
}

.page-lead {
  max-width: 820px;
  margin-top: 10px;
  color: var(--text-mute);
  font-size: 14px;
  line-height: 1.8;
}

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

.footer-groups {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px 24px 28px;
}

.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}

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

.footer-list a {
  display: inline-block;
  min-height: 24px;
  font-size: 14px;
  color: var(--text-dim);
}

.footer-list a:hover {
  color: var(--amber);
}

.footer-bottom {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 18px 24px 32px;
  border-top: 1px solid var(--line);
}

.footer-summary {
  font-size: 13px;
  color: var(--text-mute);
  line-height: 1.8;
  max-width: 760px;
}

.footer-copy {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-mute);
}

/* --------------------------------------------------------------------------
   components —— 通用组件
   -------------------------------------------------------------------------- */

/* 状态标签 */
.status-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  line-height: 1.6;
  white-space: nowrap;
  border: 1px solid var(--line-strong);
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.02);
}

.status-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex: 0 0 auto;
}

.status-tag-ok,
.status-normal,
.state-tag-normal {
  color: var(--ok);
  border-color: rgba(63, 178, 127, 0.4);
  background: rgba(63, 178, 127, 0.08);
}

.status-tag-warn,
.status-pending {
  color: var(--amber);
  border-color: var(--amber-dim);
  background: rgba(240, 160, 32, 0.08);
}

.status-updating {
  color: var(--warn);
  border-color: rgba(224, 90, 79, 0.4);
  background: rgba(224, 90, 79, 0.08);
}

.state-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid var(--line-strong);
}

.state-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--amber);
  color: #1a1206;
  border-color: var(--amber);
}

.btn-primary:hover {
  background: #ffb43a;
  color: #1a1206;
}

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

.btn-ghost:hover {
  color: var(--amber);
  border-color: var(--amber-dim);
  background: var(--card);
}

/* 文本链接 */
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--amber);
  border-bottom: 1px solid transparent;
}

.text-link::after {
  content: "→";
  font-size: 13px;
}

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

/* 区块通用头 */
.section {
  margin-top: 56px;
}

.section-head {
  margin-bottom: 22px;
}

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

.section-desc {
  max-width: 780px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
}

.section-intro {
  max-width: 780px;
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.8;
  margin-bottom: 22px;
}

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

.section-note {
  margin-top: 18px;
  font-size: 14px;
}

.section-note a {
  color: var(--amber);
}

/* 图片容器统一约束 */
.hero-figure img,
.collection-figure img,
.collection-cover img,
.channel-thumb img,
.channel-map-figure img,
.guide-figure img,
.fields-figure img,
.records-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

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

/* 首屏 */
.hero {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(0, 1.25fr);
  gap: 36px;
  align-items: start;
  padding: 26px 0 8px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0;
  color: var(--amber);
  border: 1px solid var(--amber-dim);
  border-radius: 999px;
  padding: 3px 12px;
  margin-bottom: 16px;
  background: rgba(240, 160, 32, 0.06);
}

.hero-title {
  font-size: 34px;
  line-height: 1.28;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.85;
  max-width: 480px;
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 24px 0 26px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
}

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

.hero-fact-num {
  font-size: 20px;
  font-weight: 600;
  color: var(--amber);
  line-height: 1.2;
}

.hero-fact-label {
  font-size: 13px;
  color: var(--text-mute);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-media {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.hero-figure {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.hero-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 26px 18px 14px;
  font-size: 13px;
  color: var(--text);
  background: linear-gradient(180deg, rgba(16, 20, 24, 0) 0%, rgba(16, 20, 24, 0.88) 62%);
}

.hero-channel-strip {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 16px 18px;
}

.hero-strip-title {
  font-size: 14px;
  color: var(--text-dim);
  font-weight: 600;
  margin-bottom: 12px;
}

.hero-strip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-strip-item a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  font-size: 13px;
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg-soft);
}

.hero-strip-item a:hover {
  color: var(--amber);
  border-color: var(--amber-dim);
}

/* 频道方向索引 */
.channel-index {
  border-top: 1px solid var(--line);
}

.channel-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 16px 14px;
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  transition: background-color 0.18s ease, border-color 0.18s ease;
}

.channel-row:hover {
  background: var(--card);
  border-left-color: var(--amber);
}

.channel-code {
  font-size: 13px;
  font-weight: 600;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

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

.channel-name {
  font-size: 17px;
  margin-bottom: 4px;
}

.channel-scope {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

.channel-sample {
  margin-top: 4px;
  font-size: 13px;
  color: var(--text-mute);
}

/* 专题片单 */
.collection-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}

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

.collection-card:hover {
  border-color: var(--line-strong);
  background: var(--card-hover);
}

.collection-figure,
.collection-cover {
  aspect-ratio: 16 / 9;
  background: var(--bg-soft);
  overflow: hidden;
}

.collection-body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.collection-name,
.collection-title {
  font-size: 17px;
}

.collection-title a {
  color: var(--text);
}

.collection-title a:hover {
  color: var(--amber);
}

.collection-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.75;
}

.collection-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-mute);
}

.collection-count {
  font-size: 13px;
  color: var(--text-mute);
}

/* 浏览顺序四步（首页） */
.step-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap);
}

.step-track .step-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  min-width: 0;
}

.step-track .step-item:hover {
  border-color: var(--line-strong);
}

.step-track .step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--amber-dim);
  color: var(--amber);
  font-size: 13px;
  font-weight: 600;
}

.step-track .step-name {
  font-size: 16px;
}

.step-track .step-check {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.75;
}

/* 字段口径摘要 */
.field-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
  align-items: start;
}

.field-summary-col {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 18px;
  min-width: 0;
}

.field-summary-title {
  font-size: 16px;
  margin-bottom: 12px;
}

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

.field-table-caption {
  caption-side: top;
  text-align: left;
  font-size: 13px;
  color: var(--text-mute);
  padding-bottom: 8px;
}

.field-table th,
.field-table td {
  text-align: left;
  padding: 8px 10px 8px 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.7;
}

.field-table th {
  color: var(--text-dim);
  font-weight: 600;
  font-size: 13px;
}

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

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

.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.boundary-item {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--amber-dim);
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
}

.boundary-name {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.boundary-text {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.75;
}

/* 整理记录速览 */
.record-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  align-items: start;
}

.record-month {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 16px 18px;
  min-width: 0;
}

.record-month-title {
  font-size: 15px;
  color: var(--amber);
  padding-bottom: 10px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.record-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.record-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 10px;
  align-items: baseline;
}

.record-date {
  font-size: 12px;
  color: var(--text-mute);
}

.record-scope {
  font-size: 12px;
  color: var(--amber);
  justify-self: start;
}

.record-text {
  grid-column: 1 / -1;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.75;
}

/* 站内栏目索引 */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
}

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

.sitemap-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 16px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.sitemap-link:hover {
  border-color: var(--amber-dim);
  background: var(--card-hover);
}

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

.sitemap-desc {
  font-size: 13px;
  color: var(--text-mute);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages —— 内页：题材频道
   -------------------------------------------------------------------------- */
.channel-table {
  border-top: 1px solid var(--line);
}

.channel-table .channel-row {
  grid-template-columns: 128px minmax(0, 1fr) auto;
  align-items: start;
  padding: 18px 14px;
}

.channel-thumb {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-soft);
  border: 1px solid var(--line);
}

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

.channel-table .channel-code {
  margin-bottom: 4px;
}

.channel-rep {
  margin-top: 6px;
  font-size: 13px;
  color: var(--text-mute);
  line-height: 1.7;
}

.suggest-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}

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

.suggest-name {
  font-size: 16px;
  margin-bottom: 8px;
}

.suggest-text {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
}

.channel-map-figure {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

.channel-map-figure img {
  aspect-ratio: 21 / 9;
}

.channel-map-caption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--text-mute);
  border-top: 1px solid var(--line);
}

/* --------------------------------------------------------------------------
   pages —— 内页：专题片单
   -------------------------------------------------------------------------- */
.collections-entry .collection-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.collections-entry .collection-body {
  gap: 10px;
}

.logic-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  align-items: start;
}

.logic-block {
  padding: 18px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--amber-dim);
  border-radius: var(--radius);
  background: var(--card);
  min-width: 0;
}

.logic-block h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

.logic-block p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
}

.logic-block p + p {
  margin-top: 10px;
}

.tips-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
}

.tip-item {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-soft);
  min-width: 0;
}

.tip-item h3 {
  font-size: 15px;
  margin-bottom: 8px;
}

.tip-item p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   pages —— 内页：浏览指引
   -------------------------------------------------------------------------- */
.guide-figure {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  margin-bottom: 26px;
}

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

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

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

.guide-steps .step-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  min-width: 0;
}

.guide-steps .step-item:hover {
  border-color: var(--line-strong);
}

.guide-steps .step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--amber-dim);
  color: var(--amber);
  font-size: 13px;
  font-weight: 600;
}

.guide-steps .step-name {
  font-size: 16px;
}

.guide-steps .step-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
}

.guide-steps .step-desc a {
  color: var(--amber);
}

.guide-steps .step-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-mute);
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

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

.faq-question {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 14px 18px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::before {
  content: "";
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-right: 2px solid var(--amber);
  border-bottom: 2px solid var(--amber);
  transform: rotate(-45deg);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::before {
  transform: rotate(45deg);
}

.faq-question:hover {
  color: var(--amber);
}

.faq-answer {
  padding: 14px 18px 16px;
  border-top: 1px solid var(--line);
}

.faq-answer p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.85;
}

.faq-answer a {
  color: var(--amber);
}

.feedback-note {
  margin-top: 26px;
  padding: 20px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--amber);
  border-radius: var(--radius);
  background: var(--bg-soft);
}

.feedback-title {
  font-size: 16px;
  margin-bottom: 10px;
}

.feedback-note > p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
}

.feedback-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 14px 0;
}

.feedback-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
}

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

.feedback-link {
  font-size: 14px;
  color: var(--text-dim);
}

.feedback-link a {
  color: var(--amber);
}

/* --------------------------------------------------------------------------
   pages —— 内页：字段口径
   -------------------------------------------------------------------------- */
.fields-figure {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

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

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

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

.fields-row {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 20px;
  padding: 18px 14px;
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  align-items: start;
}

.fields-row:hover {
  background: var(--card);
  border-left-color: var(--amber);
}

.field-name {
  font-size: 16px;
  color: var(--amber);
}

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

.field-meaning {
  font-size: 15px;
  color: var(--text);
  line-height: 1.8;
}

.field-meaning a {
  color: var(--amber);
}

.field-range {
  margin-top: 6px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.75;
}

.fields-boundary-section .boundary-list {
  margin-top: 4px;
}

.fields-boundary-section .boundary-item {
  background: var(--card);
  padding: 16px 18px;
}

.boundary-title {
  font-size: 16px;
  margin-bottom: 6px;
}

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

.related-item a {
  display: flex;
  align-items: center;
  min-height: 60px;
  padding: 14px 16px;
  font-size: 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--text);
}

.related-item a:hover {
  color: var(--amber);
  border-color: var(--amber-dim);
  background: var(--card-hover);
}

/* --------------------------------------------------------------------------
   pages —— 内页：整理记录
   -------------------------------------------------------------------------- */
.records-section {
  margin-bottom: 48px;
}

.records-month {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 18px 20px;
  margin-bottom: 16px;
}

.records-month-title {
  font-size: 16px;
  color: var(--amber);
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.records-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.records-item {
  display: grid;
  grid-template-columns: 96px 160px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

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

.records-date {
  font-size: 13px;
  color: var(--text-mute);
}

.records-scope {
  font-size: 13px;
  color: var(--amber);
}

.records-note {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
  min-width: 0;
}

.records-guide-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 820px;
  margin-bottom: 24px;
}

.records-guide-body p {
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.85;
}

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

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

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

.check-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 22px;
}

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

.check-title {
  font-size: 16px;
  margin-bottom: 8px;
}

.check-note {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
}

.check-note a {
  color: var(--amber);
}

/* --------------------------------------------------------------------------
   pages —— 404
   -------------------------------------------------------------------------- */
.error-main {
  padding-top: 56px;
  padding-bottom: 80px;
}

.error-panel {
  max-width: 720px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 32px 28px;
}

.error-code {
  font-size: 13px;
  color: var(--amber);
  margin-bottom: 10px;
}

.error-panel h1 {
  font-size: 32px;
  margin-bottom: 12px;
}

.error-lead {
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.85;
  margin-bottom: 20px;
}

.error-hints {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 22px;
}

.error-path {
  font-size: 14px;
  color: var(--text-dim);
}

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

.error-note {
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-mute);
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   responsive —— 平板与手机
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .hero-lead {
    max-width: none;
  }

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

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

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

@media (max-width: 900px) {
  .step-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (max-width: 768px) {
  .status-bar {
    padding: 10px 16px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .site-header {
    flex-wrap: wrap;
    padding: 12px 16px;
    gap: 12px;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding-top: 8px;
    border-top: 1px solid var(--line);
  }

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

  .nav-link {
    min-height: 48px;
    padding: 0 12px;
    font-size: 16px;
  }

  .nav-item-extra {
    margin-left: 0;
  }

  .site-main {
    padding: 0 16px 48px;
  }

  .home-main {
    padding-top: 20px;
  }

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

  .page-header {
    padding-bottom: 20px;
    margin-bottom: 26px;
  }

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

  .section {
    margin-top: 40px;
  }

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

  .channel-row {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 12px;
    padding: 14px 10px;
  }

  .channel-row .status-tag {
    grid-column: 2;
    justify-self: start;
  }

  .channel-table .channel-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .channel-table .channel-row .status-tag {
    grid-column: 1;
  }

  .channel-thumb {
    max-width: 220px;
  }

  .collection-grid,
  .collections-entry .collection-grid,
  .suggest-list,
  .step-list,
  .check-list,
  .field-summary,
  .logic-columns,
  .tips-list,
  .step-track,
  .record-groups {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

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

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

  .error-panel {
    padding: 24px 20px;
  }

  .error-panel h1 {
    font-size: 24px;
  }
}

@media (max-width: 480px) {
  .hero-facts {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
  }

  .footer-groups {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    padding: 32px 16px 22px;
  }

  .footer-bottom {
    padding: 16px 16px 28px;
  }

  .error-actions .btn {
    flex: 1 1 auto;
  }
}

/* 动效增强：不影响初始可见性 */
@media (prefers-reduced-motion: no-preference) {
  .collection-card,
  .sitemap-link,
  .related-item a,
  .tip-item,
  .check-item {
    transition: transform 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
  }

  .collection-card:hover,
  .sitemap-link:hover,
  .related-item a:hover {
    transform: translateY(-2px);
  }
}