/* ==========================================================================
   九九影视 · 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base · 变量、重置、排版、通用元素
   -------------------------------------------------------------------------- */

:root {
  --color-primary: #2c5f8a;
  --color-primary-dark: #224b6e;
  --color-primary-soft: #e8f0f6;
  --color-accent: #d98c4a;
  --color-text: #2b2b2b;
  --color-muted: #6b7280;
  --color-bg: #f7f8fa;
  --color-card: #ffffff;
  --color-border: #dde3ea;
  --container: 1120px;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow-card: 0 1px 2px rgba(44, 95, 138, 0.06);
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

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

body {
  margin: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.75;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--color-primary-dark);
  font-weight: 600;
  line-height: 1.35;
}

p {
  margin: 0;
}

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

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

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

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

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   layout · 页面骨架：body、页头、导航、主容器、页脚
   -------------------------------------------------------------------------- */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-stack);
}

/* 顶部信息条 */
.top-bar {
  background-color: var(--color-primary-dark);
  color: #dce8f2;
  font-size: 14px;
  line-height: 1.6;
}

.top-bar p {
  max-width: var(--container);
  margin: 0 auto;
  padding: 8px 24px;
}

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 12px 24px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--color-primary-dark);
  line-height: 1.3;
}

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

.brand-name {
  font-size: 20px;
  font-weight: 700;
}

.brand-sub {
  color: var(--color-muted);
  font-size: 13px;
}

/* 导航 */
.site-nav {
  display: flex;
  align-items: center;
}

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

.nav-item {
  position: relative;
}

.nav-item > a {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 15px;
  white-space: nowrap;
}

.nav-item > a:hover,
.nav-item > a:focus-visible {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.nav-item.is-current > a,
.nav-item > a.is-current {
  color: var(--color-primary);
  font-weight: 600;
}

.nav-item.is-current > a::after,
.nav-item > a.is-current::after {
  content: "";
  display: block;
  height: 2px;
  margin-top: 4px;
  background-color: var(--color-accent);
  border-radius: 1px;
}

.nav-sub {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 50;
  min-width: 190px;
  padding: 8px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 8px 20px rgba(34, 75, 110, 0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
}

.nav-item.has-sub:hover .nav-sub,
.nav-item.has-sub:focus-within .nav-sub {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-sub li a {
  display: block;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 14px;
}

.nav-sub li a:hover,
.nav-sub li a:focus-visible {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

/* 汉堡按钮：桌面隐藏 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

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

/* 主内容容器 */
.site-main {
  flex: 1 1 auto;
  width: 100%;
}

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

/* 页脚 */
.site-footer {
  background-color: var(--color-primary-dark);
  color: #d7e3ee;
  font-size: 14px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 28px;
}

.footer-brand-name {
  margin-bottom: 10px;
  color: #ffffff;
  font-size: 17px;
  font-weight: 600;
}

.footer-brand-desc {
  color: #b9cbd9;
  line-height: 1.7;
}

.footer-title {
  margin-bottom: 12px;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: #c6d6e3;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: #f0b57e;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.copyright {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px;
  color: #9fb4c6;
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   components · 通用组件
   -------------------------------------------------------------------------- */

/* 区块与标题 */
.section {
  margin-bottom: 48px;
}

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

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

.section-desc,
.section-lead,
.section-intro {
  margin-top: 8px;
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.7;
}

.section-foot {
  margin-top: 16px;
  font-size: 15px;
}

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

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #ffffff;
}

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

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

/* 文字链 */
.text-link {
  font-size: 15px;
  font-weight: 600;
}

.text-link::after {
  content: " →";
  font-weight: 400;
}

/* 表格 */
.table-wrap {
  overflow-x: auto;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.data-table,
.channel-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.data-table th,
.data-table td,
.channel-table th,
.channel-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--color-border);
}

.data-table thead th,
.channel-table thead th {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-weight: 600;
  white-space: nowrap;
}

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

.data-table tbody tr:nth-child(even),
.channel-table tbody tr:nth-child(even) {
  background-color: #fbfcfd;
}

.channel-table tbody th {
  color: var(--color-primary-dark);
  font-weight: 600;
}

/* 图片容器 */
figure {
  margin: 0;
}

.hero-media,
.topic-media,
.topic-figure,
.channel-figure,
.guide-figure,
.records-figure {
  background-color: var(--color-primary-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.hero-media img,
.topic-media img,
.topic-figure img,
.channel-figure img,
.guide-figure img,
.records-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

figcaption {
  padding: 10px 14px;
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.6;
  background-color: var(--color-card);
  border-top: 1px solid var(--color-border);
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 0 4px;
  color: var(--color-muted);
  font-size: 14px;
}

.breadcrumb-sep {
  color: #b6c1cc;
}

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

/* 页面标题区 */
.page-header {
  padding: 12px 0 28px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 32px;
}

.page-title {
  font-size: 32px;
  font-weight: 600;
}

.page-description {
  margin-top: 10px;
  max-width: 820px;
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.75;
}

/* 复制链接按钮 */
.copy-link-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 600;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.copy-link-btn:hover,
.copy-link-btn:focus-visible {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.copy-link-btn.is-copied {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

.copy-link-feedback {
  margin-left: 12px;
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 600;
}

/* 标签 */
.records-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  line-height: 1.6;
  white-space: nowrap;
}

.records-tag--new {
  background-color: #e6f0e9;
  color: #2f6b47;
}

.records-tag--adjust {
  background-color: #fbf0e4;
  color: #a9631f;
}

.records-tag--archive {
  background-color: #eceff3;
  color: #5a6472;
}

/* 滚动出现增强（不隐藏初始内容） */
.reveal {
  animation: reveal-up 0.5s ease both;
}

@keyframes reveal-up {
  from {
    transform: translateY(10px);
  }
  to {
    transform: translateY(0);
  }
}

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

/* 首屏 */
.hero {
  background-color: var(--color-primary-soft);
  border-bottom: 1px solid var(--color-border);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px;
}

.hero-eyebrow {
  margin-bottom: 12px;
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 600;
}

.hero-title {
  font-size: 32px;
  font-weight: 600;
}

.hero-desc {
  margin-top: 14px;
  max-width: 520px;
  color: #3d4a57;
  font-size: 16px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.hero-media img {
  aspect-ratio: 16 / 10;
  border-bottom: 1px solid var(--color-border);
}

/* 首页内容区容器 */
.home-main > .section {
  max-width: var(--container);
  margin: 0 auto 48px;
  padding: 0 24px;
}

.home-main > .section:first-of-type {
  margin-top: 48px;
}

/* 频道总览 */
.channel-overview .table-wrap {
  margin-top: 4px;
}

.channel-overview .section-foot a {
  font-weight: 600;
}

/* 专题入口 */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

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

.topic-card:hover,
.topic-card:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 4px 14px rgba(34, 75, 110, 0.12);
}

.topic-media img,
.topic-figure img {
  aspect-ratio: 16 / 9;
}

.topic-name {
  padding: 16px 18px 0;
  font-size: 18px;
}

.topic-scope {
  padding: 8px 18px 0;
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.7;
}

.topic-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 10px 18px 0;
  color: var(--color-muted);
  font-size: 14px;
}

.topic-link {
  margin: 14px 18px 18px;
  font-size: 15px;
  font-weight: 600;
}

.topic-link::after {
  content: " →";
  font-weight: 400;
}

/* 整理记录速览 */
.records-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.records-group {
  padding: 18px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.records-month {
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
  font-size: 16px;
}

.record-item {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--color-border);
  font-size: 14px;
  line-height: 1.65;
}

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

.record-date {
  color: var(--color-muted);
  white-space: nowrap;
}

.record-type {
  color: var(--color-primary);
  font-weight: 600;
  white-space: nowrap;
}

.record-summary {
  flex: 1 1 100%;
  color: var(--color-text);
}

/* 观看指引与收录边界摘要 */
.guide-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

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

.col-title {
  margin-bottom: 12px;
  font-size: 18px;
}

.check-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 8px;
  font-size: 15px;
  line-height: 1.7;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 7px;
  height: 7px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.guide-col .text-link {
  display: inline-block;
  margin-top: 8px;
}

/* 站内页面索引 */
.index-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.index-card {
  display: flex;
  flex-direction: column;
  padding: 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color 0.18s ease;
}

.index-card:hover,
.index-card:focus-within {
  border-color: var(--color-primary);
}

.index-name {
  margin-bottom: 8px;
  font-size: 17px;
}

.index-desc {
  flex: 1 1 auto;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.7;
}

.index-link {
  margin-top: 12px;
  font-size: 15px;
  font-weight: 600;
}

.index-link::after {
  content: " →";
  font-weight: 400;
}

/* --------------------------------------------------------------------------
   pages · 频道分类页
   -------------------------------------------------------------------------- */

.channel-table-section {
  margin-bottom: 48px;
}

.channel-table-section .table-wrap {
  margin-top: 16px;
}

.channel-row .cell-code {
  color: var(--color-muted);
  white-space: nowrap;
}

.channel-row .cell-name {
  color: var(--color-primary-dark);
  font-weight: 600;
  white-space: nowrap;
}

.channel-row .cell-link {
  white-space: nowrap;
}

.channel-figure {
  margin-top: 24px;
}

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

.channel-order-section {
  margin-bottom: 48px;
}

.order-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 16px;
}

.order-col {
  padding: 22px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.order-title {
  margin-bottom: 10px;
  font-size: 18px;
}

.order-text {
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.75;
}

.order-steps {
  margin-top: 14px;
  counter-reset: order-step;
}

.order-steps li {
  position: relative;
  padding-left: 34px;
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.7;
  counter-increment: order-step;
}

.order-steps li::before {
  content: counter(order-step);
  position: absolute;
  left: 0;
  top: 2px;
  width: 22px;
  height: 22px;
  background-color: var(--color-primary-soft);
  border-radius: 50%;
  color: var(--color-primary-dark);
  font-size: 13px;
  font-weight: 600;
  line-height: 22px;
  text-align: center;
}

.order-note {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--color-border);
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.7;
}

.channel-cross-link {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 28px;
  font-size: 15px;
}

.channel-cross-link a {
  font-weight: 600;
}

.channel-cross-link a::after {
  content: " →";
  font-weight: 400;
}

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

.topic-list-section {
  margin-bottom: 48px;
}

.topic-list-section .topic-grid {
  margin-top: 20px;
}

.topic-body {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
}

.topic-body .topic-name {
  padding: 16px 18px 0;
}

.topic-body .topic-scope {
  padding: 8px 18px 0;
}

.topic-body .topic-meta {
  padding: 10px 18px 0;
}

.topic-body .topic-link {
  margin: 14px 18px 18px;
}

.topic-channel,
.topic-count {
  display: inline-block;
  padding: 2px 8px;
  background-color: var(--color-primary-soft);
  border-radius: var(--radius-sm);
  color: var(--color-primary-dark);
  font-size: 13px;
}

.topic-logic-section {
  margin-bottom: 48px;
}

.logic-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 16px;
}

.logic-col {
  padding: 22px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.logic-subtitle {
  margin-bottom: 10px;
  font-size: 18px;
}

.logic-col p {
  margin-bottom: 10px;
  font-size: 15px;
  line-height: 1.75;
}

.logic-col p:last-child {
  margin-bottom: 0;
}

.copy-link-section {
  margin-bottom: 48px;
  padding: 24px;
  background-color: var(--color-primary-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

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

.copy-link-section .copy-link-btn {
  margin-top: 14px;
}

/* --------------------------------------------------------------------------
   pages · 观看指引页
   -------------------------------------------------------------------------- */

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 40px;
  align-items: start;
}

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

.guide-aside {
  min-width: 0;
}

.section-prepare .section-intro,
.section-faq .section-intro {
  margin-bottom: 18px;
}

.guide-figure {
  margin-bottom: 24px;
}

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

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

.prepare-card {
  padding: 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.prepare-title {
  margin-bottom: 8px;
  font-size: 17px;
}

.prepare-desc {
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.7;
}

.prepare-list {
  margin-top: 12px;
}

.prepare-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.7;
}

.prepare-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 6px;
  height: 6px;
  background-color: var(--color-primary);
  border-radius: 50%;
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-question {
  position: relative;
  padding: 14px 44px 14px 18px;
  color: var(--color-primary-dark);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-accent);
  font-size: 20px;
  font-weight: 600;
  line-height: 1;
}

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

.faq-answer {
  padding: 0 18px 16px;
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.75;
}

/* 侧栏 */
.aside-block {
  padding: 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 24px;
}

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

.aside-block .section-intro {
  margin-bottom: 14px;
}

.field-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.field-caption {
  padding-bottom: 10px;
  color: var(--color-muted);
  font-size: 13px;
  text-align: left;
}

.field-table th,
.field-table td {
  padding: 9px 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--color-border);
}

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

.field-table th {
  width: 40%;
  padding-right: 12px;
  color: var(--color-primary-dark);
  font-weight: 600;
}

.field-table td {
  color: var(--color-muted);
  line-height: 1.65;
}

.aside-text {
  margin-bottom: 10px;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.75;
}

.aside-text:last-child {
  margin-bottom: 0;
}

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

.records-figure {
  margin-bottom: 32px;
}

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

.records-section {
  margin-bottom: 48px;
}

.records-section .section-lead {
  margin-bottom: 20px;
}

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

.records-month-head {
  padding-bottom: 12px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.records-month-title {
  font-size: 18px;
}

.records-month-note {
  margin-top: 4px;
  color: var(--color-muted);
  font-size: 14px;
}

.records-item {
  padding: 12px 0;
  border-bottom: 1px dashed var(--color-border);
}

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

.records-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  color: var(--color-muted);
  font-size: 14px;
}

.records-summary {
  font-size: 15px;
  line-height: 1.75;
}

.changes-section {
  margin-bottom: 48px;
}

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

.change-type {
  padding: 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.change-type-name {
  margin-bottom: 10px;
}

.change-type-desc {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.75;
}

.records-actions {
  margin-bottom: 48px;
  padding: 24px;
  background-color: var(--color-primary-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

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

.action-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin-top: 16px;
}

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

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 24px;
}

.error-box {
  max-width: 620px;
  padding: 40px 36px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-align: center;
}

.error-code {
  color: var(--color-accent);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.1;
}

.error-title {
  margin-top: 10px;
  font-size: 26px;
}

.error-desc {
  margin-top: 12px;
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.75;
}

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

.error-tip {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   responsive · 断点适配
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

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

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

  .records-group:last-child {
    grid-column: 1 / -1;
  }

  .page-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 28px;
  }

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

  .prepare-card:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  /* 页头与移动导航 */
  .header-inner {
    flex-wrap: wrap;
    padding: 10px 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    flex-basis: 100%;
    display: block;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-top: 8px;
    padding: 8px 0;
    border-top: 1px solid var(--color-border);
  }

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

  .nav-item > a {
    padding: 12px 6px;
    font-size: 16px;
  }

  .nav-item.is-current > a::after,
  .nav-item > a.is-current::after {
    display: none;
  }

  .nav-sub {
    position: static;
    min-width: 0;
    padding: 0 0 6px 16px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-sub li a {
    padding: 10px 6px;
    font-size: 15px;
  }

  /* 主容器与标题 */
  .inner-main {
    padding: 0 16px 40px;
  }

  .top-bar p {
    padding: 8px 16px;
  }

  .page-header {
    padding: 8px 0 20px;
    margin-bottom: 24px;
  }

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

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

  .section {
    margin-bottom: 36px;
  }

  /* 首屏 */
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 16px;
  }

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

  .hero-desc {
    font-size: 15px;
  }

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

  .home-main > .section {
    padding: 0 16px;
    margin-bottom: 36px;
  }

  .home-main > .section:first-of-type {
    margin-top: 32px;
  }

  /* 表格转卡片 */
  .table-wrap {
    overflow-x: visible;
    border: 0;
    background-color: transparent;
  }

  .data-table,
  .channel-table {
    display: block;
  }

  .data-table thead,
  .channel-table thead {
    display: none;
  }

  .data-table tbody,
  .channel-table tbody {
    display: block;
  }

  .data-table tbody tr,
  .channel-table tbody tr {
    display: block;
    padding: 14px 16px;
    margin-bottom: 12px;
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
  }

  .data-table tbody tr:nth-child(even),
  .channel-table tbody tr:nth-child(even) {
    background-color: var(--color-card);
  }

  .data-table tbody th,
  .data-table tbody td,
  .channel-table tbody td {
    display: block;
    padding: 6px 0;
    border-bottom: 0;
  }

  .channel-table tbody th {
    padding-bottom: 4px;
    font-size: 16px;
  }

  .channel-table tbody td {
    color: var(--color-text);
    font-size: 14px;
  }

  .channel-row .cell-link {
    padding-top: 8px;
  }

  /* 多栏转单列 */
  .topic-grid,
  .guide-columns,
  .order-columns,
  .logic-columns,
  .records-groups,
  .index-grid,
  .prepare-grid,
  .change-types {
    grid-template-columns: 1fr;
  }

  .records-group:last-child,
  .prepare-card:last-child {
    grid-column: auto;
  }

  .page-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .guide-aside {
    display: block;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 16px 20px;
  }

  .copyright {
    padding: 14px 16px;
  }

  /* 404 */
  .error-main {
    padding: 40px 16px;
  }

  .error-box {
    padding: 28px 20px;
  }

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

  .copy-link-feedback {
    display: block;
    margin: 10px 0 0;
  }
}

@media (max-width: 390px) {
  .brand-name {
    font-size: 18px;
  }

  .brand-sub {
    font-size: 12px;
  }

  .topic-name,
  .prepare-title,
  .order-title,
  .logic-subtitle,
  .records-month-title {
    font-size: 16px;
  }

  .error-code {
    font-size: 34px;
  }
}