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

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

body.site-body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: #1f2933;
  background-color: #f6f8f8;
  font-variant-numeric: tabular-nums;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 600;
  line-height: 1.35;
  color: #1f2933;
}

p {
  margin: 0 0 16px;
}

p:last-child {
  margin-bottom: 0;
}

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

a {
  color: #1d6f7a;
  text-decoration: none;
  transition: color 0.18s ease;
}

a:hover,
a:focus-visible {
  color: #12655f;
  text-decoration: underline;
}

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

figure {
  margin: 0;
}

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

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

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

/* =========================================================
   layout - 全局容器与骨架
   ========================================================= */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-main {
  display: block;
}

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

.inner-main .container,
.inner-container {
  max-width: 1040px;
}

/* 页头 */
.site-header {
  background-color: #ffffff;
  border-bottom: 1px solid #d8dee4;
}

.header-brand-row {
  border-bottom: 1px solid #eef1f3;
}

.header-brand-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.brand-mark {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: #1f2933;
}

.brand-mark:hover,
.brand-mark:focus-visible {
  text-decoration: none;
  color: #12655f;
}

.brand-name {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.25;
}

.brand-slogan {
  font-size: 13px;
  font-weight: 400;
  color: #4b5563;
  line-height: 1.4;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background-color: #f6f8f8;
  border: 1px solid #d8dee4;
  border-radius: 6px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: #1f2933;
}

/* 导航 */
.site-nav {
  background-color: #ffffff;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 8px 0;
}

.nav-item a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  font-size: 15px;
  font-weight: 500;
  color: #1f2933;
  border-bottom: 2px solid transparent;
  border-radius: 4px 4px 0 0;
}

.nav-item a:hover,
.nav-item a:focus-visible {
  color: #12655f;
  background-color: #e6f2f0;
  text-decoration: none;
}

.nav-item.is-current a {
  color: #12655f;
  border-bottom-color: #12655f;
  font-weight: 600;
}

/* 频道标签带 */
.channel-tag-band {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 0 12px;
}

.channel-tag-band li {
  display: inline-flex;
}

.channel-tag-band a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  font-size: 13px;
  color: #4b5563;
  background-color: #f6f8f8;
  border: 1px solid #e4e9ec;
  border-radius: 4px;
}

.channel-tag-band a:hover,
.channel-tag-band a:focus-visible {
  color: #12655f;
  border-color: #12655f;
  background-color: #e6f2f0;
  text-decoration: none;
}

.channel-tag-band a.is-current {
  color: #ffffff;
  background-color: #12655f;
  border-color: #12655f;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 1040px;
  margin: 0 auto;
  padding: 20px 24px 0;
  font-size: 14px;
  color: #4b5563;
}

.breadcrumb a {
  color: #1d6f7a;
}

.breadcrumb-sep {
  color: #8a939c;
}

.breadcrumb-current {
  color: #4b5563;
}

/* 页面标题区（内页统一） */
.page-header {
  max-width: 1040px;
  margin: 0 auto;
  padding: 16px 24px 0;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.25;
  color: #1f2933;
  margin: 0;
}

/* 页脚 */
.site-footer {
  background-color: #ffffff;
  border-top: 1px solid #d8dee4;
  margin-top: 56px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
  padding-top: 40px;
  padding-bottom: 32px;
}

.footer-col-title {
  font-size: 14px;
  font-weight: 700;
  color: #1f2933;
  margin-bottom: 14px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 15px;
  font-weight: 400;
  color: #4b5563;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: #12655f;
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 18px;
  padding-bottom: 24px;
  border-top: 1px solid #eef1f3;
  font-size: 13px;
  color: #8a939c;
}

.footer-brand-line {
  margin: 0;
  color: #4b5563;
}

.footer-note {
  margin: 0;
}

/* =========================================================
   components - 通用模块
   ========================================================= */
/* 区块头（首页 section-head） */
.section-head {
  margin-bottom: 28px;
}

.section-head h2 {
  font-size: 22px;
  font-weight: 600;
  color: #1f2933;
  margin-bottom: 8px;
}

.section-note {
  font-size: 14px;
  line-height: 1.6;
  color: #4b5563;
  margin: 0;
}

/* 内页 section 标题（带序号） */
.section-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 22px;
  font-weight: 600;
  color: #1f2933;
  margin-bottom: 16px;
}

.section-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 26px;
  padding: 0 6px;
  font-size: 13px;
  font-weight: 700;
  color: #12655f;
  background-color: #e6f2f0;
  border-radius: 4px;
  font-variant-numeric: tabular-nums;
}

.section-lead {
  font-size: 16px;
  line-height: 1.75;
  color: #4b5563;
  margin: 0 0 20px;
}

/* 内容区通用 */
.content-section {
  padding: 32px 0;
  border-top: 1px solid #eef1f3;
}

.content-section:first-of-type {
  border-top: none;
  padding-top: 24px;
}

.content-inner {
  max-width: 1040px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid transparent;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.btn-primary {
  background-color: #12655f;
  color: #ffffff;
  border-color: #12655f;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: #0d4f4a;
  border-color: #0d4f4a;
  color: #ffffff;
  text-decoration: none;
}

.btn-ghost {
  background-color: #ffffff;
  color: #12655f;
  border-color: #12655f;
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background-color: #e6f2f0;
  color: #12655f;
  text-decoration: none;
}

/* 步骤列表（通用） */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.step-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid #eef1f3;
}

.step-item:last-child {
  border-bottom: none;
}

.step-no,
.step-number {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 14px;
  font-weight: 700;
  color: #12655f;
  background-color: #e6f2f0;
  border-radius: 50%;
  font-variant-numeric: tabular-nums;
}

.step-body {
  flex: 1 1 auto;
  min-width: 0;
}

.step-body h3,
.step-title {
  font-size: 18px;
  font-weight: 600;
  color: #1f2933;
  margin: 0 0 6px;
}

.step-desc,
.step-text {
  font-size: 15px;
  line-height: 1.7;
  color: #4b5563;
  margin: 0;
}

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid #eef1f3;
}

.faq-item {
  border-bottom: 1px solid #eef1f3;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 52px;
  padding: 14px 0;
  font-size: 16px;
  font-weight: 600;
  color: #1f2933;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex: 0 0 auto;
  font-size: 20px;
  font-weight: 400;
  color: #12655f;
  line-height: 1;
}

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

.faq-answer {
  padding: 0 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: #4b5563;
}

.faq-answer p {
  margin: 0 0 12px;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* 数据表格 */
.table-wrap,
.table-scroll {
  overflow-x: auto;
  border: 1px solid #d8dee4;
  border-radius: 6px;
  background-color: #ffffff;
}

.data-table {
  width: 100%;
  min-width: 640px;
  font-size: 15px;
  color: #1f2933;
}

.data-table caption {
  padding: 12px 16px;
  text-align: left;
  font-size: 14px;
  color: #4b5563;
  border-bottom: 1px solid #eef1f3;
}

.data-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 12px 16px;
  text-align: left;
  font-size: 14px;
  font-weight: 600;
  color: #1f2933;
  background-color: #f6f8f8;
  border-bottom: 1px solid #d8dee4;
  white-space: nowrap;
}

.data-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid #eef1f3;
  vertical-align: top;
  line-height: 1.6;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover {
  background-color: #fafcfc;
}

.data-table .col-name,
.data-table .col-channel {
  width: 22%;
  font-weight: 600;
}

.data-table .col-theme {
  width: 30%;
}

.data-table .col-form {
  width: 24%;
}

.data-table .col-entry {
  width: 24%;
  color: #1d6f7a;
}

.sort-btn,
.sort-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 32px;
  padding: 0;
  font-size: 14px;
  font-weight: 600;
  color: #1f2933;
  background: none;
  border: none;
}

.sort-btn:hover,
.sort-button:hover,
.sort-btn:focus-visible,
.sort-button:focus-visible {
  color: #12655f;
}

.sort-indicator,
.sort-arrow {
  font-size: 12px;
  color: #8a939c;
}

.sort-status,
.table-status {
  margin-top: 12px;
  font-size: 13px;
  color: #8a939c;
}

/* 入口条 */
.entry-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.entry-unit {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background-color: #ffffff;
  border: 1px solid #d8dee4;
  border-radius: 6px;
  color: #1f2933;
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.entry-unit:hover,
.entry-unit:focus-visible {
  border-color: #12655f;
  background-color: #fafcfc;
  color: #1f2933;
  text-decoration: none;
}

.entry-unit-title,
.entry-title {
  font-size: 16px;
  font-weight: 600;
  color: #1f2933;
}

.entry-unit-desc,
.entry-desc {
  font-size: 14px;
  line-height: 1.6;
  color: #4b5563;
}

.entry-arrow {
  font-size: 14px;
  color: #12655f;
}

.entry-unit:hover .entry-arrow,
.entry-unit:focus-visible .entry-arrow {
  transform: translateX(2px);
}

/* 相关链接条 */
.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  max-width: 1040px;
  margin: 32px auto 0;
  padding: 16px 24px;
  border-top: 1px solid #eef1f3;
  font-size: 14px;
}

.related-links-label {
  color: #8a939c;
  font-weight: 600;
}

.related-links-item {
  color: #1d6f7a;
}

/* 内容配图 */
.content-figure {
  margin: 24px 0;
  border: 1px solid #d8dee4;
  border-radius: 6px;
  overflow: hidden;
  background-color: #ffffff;
}

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

.content-figure figcaption,
.figure-caption {
  padding: 10px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: #4b5563;
  border-top: 1px solid #eef1f3;
}

/* =========================================================
   pages - 首页
   ========================================================= */
.home-main {
  padding-bottom: 0;
}

/* 焦点区 */
.hero-focus {
  background-color: #ffffff;
  border-bottom: 1px solid #eef1f3;
  padding: 40px 0 48px;
}

.hero-focus-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.hero-eyebrow {
  font-size: 13px;
  font-weight: 600;
  color: #12655f;
  margin: 0;
  letter-spacing: 0.02em;
}

.hero-text h1 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.25;
  color: #1f2933;
  margin: 0;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.75;
  color: #4b5563;
  margin: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.hero-media {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.hero-figure {
  border: 1px solid #d8dee4;
  border-radius: 8px;
  overflow: hidden;
  background-color: #f6f8f8;
}

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

.hero-index {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid #eef1f3;
}

.hero-index li {
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid #eef1f3;
}

.hero-index li a {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 44px;
  padding: 8px 0;
  font-size: 15px;
  color: #1f2933;
}

.hero-index li a:hover,
.hero-index li a:focus-visible {
  color: #12655f;
  text-decoration: none;
}

.hero-index-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-size: 12px;
  font-weight: 700;
  color: #12655f;
  background-color: #e6f2f0;
  border-radius: 4px;
  font-variant-numeric: tabular-nums;
}

/* 频道栏 + 内容流 */
.page-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px;
}

.channel-feed-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.channel-feed-layout.sidebar-left {
  grid-template-columns: 260px minmax(0, 1fr);
}

/* 频道栏 */
.channel-rail {
  background-color: #ffffff;
  border: 1px solid #d8dee4;
  border-radius: 6px;
  padding: 20px;
  min-width: 0;
}

.rail-title {
  font-size: 16px;
  font-weight: 700;
  color: #1f2933;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid #eef1f3;
}

.rail-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.rail-item {
  border-bottom: 1px solid #eef1f3;
}

.rail-item:last-child {
  border-bottom: none;
}

.rail-item a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "name arrow"
    "desc arrow";
  gap: 2px 10px;
  align-items: center;
  min-height: 44px;
  padding: 10px 0;
  color: #1f2933;
}

.rail-item a:hover,
.rail-item a:focus-visible {
  color: #12655f;
  text-decoration: none;
}

.rail-name {
  grid-area: name;
  font-size: 15px;
  font-weight: 600;
  color: inherit;
}

.rail-desc {
  grid-area: desc;
  font-size: 13px;
  line-height: 1.5;
  color: #4b5563;
}

.rail-arrow {
  grid-area: arrow;
  font-size: 16px;
  color: #12655f;
  transition: transform 0.18s ease;
}

.rail-item a:hover .rail-arrow,
.rail-item a:focus-visible .rail-arrow {
  transform: translateX(2px);
}

/* 内容流 */
.content-feed {
  min-width: 0;
}

.feed-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feed-card {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 20px;
  padding: 16px;
  background-color: #ffffff;
  border: 1px solid #d8dee4;
  border-radius: 6px;
  transition: border-color 0.18s ease;
}

.feed-card:hover {
  border-color: #12655f;
}

.feed-thumb {
  overflow: hidden;
  border-radius: 4px;
  background-color: #f6f8f8;
}

.feed-thumb img {
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

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

.feed-title {
  font-size: 18px;
  font-weight: 600;
  color: #1f2933;
  margin: 0;
}

.feed-tag {
  font-size: 13px;
  color: #12655f;
  margin: 0;
}

.feed-desc {
  font-size: 15px;
  line-height: 1.7;
  color: #4b5563;
  margin: 0;
}

.feed-time {
  font-size: 13px;
  color: #8a939c;
  margin: 4px 0 0;
}

/* 专题区 */
.topic-section {
  padding: 56px 0;
  background-color: #ffffff;
  border-top: 1px solid #eef1f3;
  border-bottom: 1px solid #eef1f3;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.topic-tile {
  display: flex;
  flex-direction: column;
  background-color: #ffffff;
  border: 1px solid #d8dee4;
  border-radius: 6px;
  overflow: hidden;
  transition: border-color 0.18s ease;
}

.topic-tile:hover {
  border-color: #12655f;
}

.topic-figure,
.topic-tile-media {
  overflow: hidden;
  background-color: #f6f8f8;
}

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

.topic-body,
.topic-tile-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 18px 18px;
}

.topic-name,
.topic-tile-title {
  font-size: 17px;
  font-weight: 600;
  color: #1f2933;
  margin: 0;
}

.topic-angle,
.topic-tile-angle {
  font-size: 14px;
  line-height: 1.65;
  color: #4b5563;
  margin: 0;
}

.topic-meta,
.topic-tile-meta {
  font-size: 13px;
  color: #8a939c;
  margin: 0;
}

.topic-tile-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  padding: 0;
}

.topic-tile-meta li {
  font-size: 13px;
  color: #8a939c;
}

/* 表格区 */
.table-section {
  padding: 56px 0;
}

/* 核验要点区 */
.check-section {
  padding: 56px 0;
  background-color: #ffffff;
  border-top: 1px solid #eef1f3;
  border-bottom: 1px solid #eef1f3;
}

/* FAQ 区 */
.faq-section {
  padding: 56px 0;
}

/* 首页入口条 */
.entry-strip {
  padding: 40px 0;
}

.entry-strip-title {
  font-size: 22px;
  font-weight: 600;
  color: #1f2933;
  margin-bottom: 20px;
}

.entry-strip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

/* =========================================================
   pages - 内页通用
   ========================================================= */
.page-summary {
  font-size: 16px;
  line-height: 1.75;
  color: #4b5563;
  margin: 0;
}

/* channels.html 标题区 */
.page-title-section {
  max-width: 1040px;
  margin: 0 auto;
  padding: 20px 24px 0;
}

.page-title-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 32px;
  align-items: start;
  padding: 20px 0 24px;
  border-bottom: 1px solid #eef1f3;
}

.page-title-text {
  min-width: 0;
}

.page-anchor {
  min-width: 0;
}

.anchor-title {
  font-size: 13px;
  font-weight: 600;
  color: #8a939c;
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.anchor-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.anchor-list li a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14px;
  color: #1d6f7a;
}

.anchor-list li a:hover,
.anchor-list li a:focus-visible {
  color: #12655f;
  text-decoration: underline;
}

/* channels.html 划分依据 */
.basis-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.basis-item {
  padding: 18px;
  background-color: #ffffff;
  border: 1px solid #d8dee4;
  border-radius: 6px;
}

.basis-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1f2933;
  margin: 0 0 8px;
}

.basis-item p {
  font-size: 14px;
  line-height: 1.7;
  color: #4b5563;
  margin: 0;
}

/* channels.html 相邻关系 */
.neighbor-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 16px;
}

.neighbor-card {
  padding: 18px;
  background-color: #ffffff;
  border: 1px solid #d8dee4;
  border-radius: 6px;
}

.neighbor-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1f2933;
  margin: 0 0 8px;
}

.neighbor-card p {
  font-size: 14px;
  line-height: 1.7;
  color: #4b5563;
  margin: 0;
}

.section-tail {
  font-size: 14px;
  color: #4b5563;
  margin: 8px 0 0;
}

.section-tail a {
  color: #1d6f7a;
}

/* channels.html 入口区 */
.entry-section {
  padding-bottom: 0;
}

/* topics.html 标题块 */
.page-title-block {
  padding: 20px 0 24px;
  border-bottom: 1px solid #eef1f3;
  margin-bottom: 32px;
}

.page-title-main {
  min-width: 0;
}

.page-anchor-nav {
  margin-top: 16px;
}

.page-anchor-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-anchor-nav li a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  font-size: 13px;
  color: #4b5563;
  background-color: #f6f8f8;
  border: 1px solid #e4e9ec;
  border-radius: 4px;
}

.page-anchor-nav li a:hover,
.page-anchor-nav li a:focus-visible {
  color: #12655f;
  border-color: #12655f;
  background-color: #e6f2f0;
  text-decoration: none;
}

/* topics.html 聚合说明 */
.section-topic-how {
  padding: 8px 0 32px;
  border-bottom: 1px solid #eef1f3;
}

.topic-how-body {
  margin-bottom: 20px;
}

.topic-how-body p {
  font-size: 16px;
  line-height: 1.75;
  color: #4b5563;
  margin: 0 0 12px;
}

.topic-how-body p:last-child {
  margin-bottom: 0;
}

.topic-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.topic-tag {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  font-size: 13px;
  color: #12655f;
  background-color: #e6f2f0;
  border-radius: 4px;
}

/* topics.html 专题清单 */
.section-topic-list {
  padding: 32px 0;
  border-bottom: 1px solid #eef1f3;
}

/* topics.html 阅读顺序 */
.section-topic-order {
  padding: 32px 0;
  border-bottom: 1px solid #eef1f3;
}

/* topics.html 同类专题互链 */
.section-topic-related {
  padding: 32px 0;
}

.related-entry-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid #eef1f3;
}

.related-entry {
  border-bottom: 1px solid #eef1f3;
}

.related-entry a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 44px;
  padding: 14px 0;
  color: #1f2933;
}

.related-entry a:hover,
.related-entry a:focus-visible {
  color: #12655f;
  text-decoration: none;
}

.related-entry-title {
  font-size: 16px;
  font-weight: 600;
  color: inherit;
}

.related-entry-desc {
  font-size: 14px;
  line-height: 1.6;
  color: #4b5563;
}

/* watch-guide.html 页内 hero */
.page-hero {
  padding: 20px 0 24px;
  border-bottom: 1px solid #eef1f3;
}

.page-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 32px;
  align-items: start;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.page-kicker {
  font-size: 13px;
  font-weight: 600;
  color: #12655f;
  margin: 0 0 8px;
}

.page-anchor-title {
  font-size: 13px;
  font-weight: 600;
  color: #8a939c;
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page-anchor-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-anchor-list li a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14px;
  color: #1d6f7a;
}

.page-anchor-list li a:hover,
.page-anchor-list li a:focus-visible {
  color: #12655f;
  text-decoration: underline;
}

/* watch-guide.html 通用 section */
.section {
  padding: 32px 0;
  border-top: 1px solid #eef1f3;
}

.section-inner {
  max-width: 1040px;
}

.section-structure {
  padding-top: 24px;
  border-top: none;
}

.structure-figure {
  margin: 0 0 24px;
  border: 1px solid #d8dee4;
  border-radius: 6px;
  overflow: hidden;
  background-color: #ffffff;
}

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

.structure-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: #4b5563;
  border-top: 1px solid #eef1f3;
}

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

.structure-block {
  padding: 18px;
  background-color: #ffffff;
  border: 1px solid #d8dee4;
  border-radius: 6px;
}

.structure-block-title {
  font-size: 16px;
  font-weight: 600;
  color: #1f2933;
  margin: 0 0 8px;
}

.structure-block-text {
  font-size: 14px;
  line-height: 1.7;
  color: #4b5563;
  margin: 0 0 8px;
}

.structure-block-meta {
  font-size: 13px;
  color: #8a939c;
  margin: 0;
}

/* watch-guide.html 核验清单 */
.check-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.check-item {
  padding: 16px 18px;
  background-color: #ffffff;
  border: 1px solid #d8dee4;
  border-radius: 6px;
  border-left: 3px solid #12655f;
}

.check-title {
  font-size: 15px;
  font-weight: 600;
  color: #1f2933;
  margin: 0 0 6px;
}

.check-text {
  font-size: 14px;
  line-height: 1.7;
  color: #4b5563;
  margin: 0;
}

/* watch-guide.html 反馈入口 */
.section-entry-strip {
  padding: 32px 0 0;
}

.entry-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background-color: #ffffff;
  border: 1px solid #d8dee4;
  border-radius: 6px;
  color: #1f2933;
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.entry-card:hover,
.entry-card:focus-visible {
  border-color: #12655f;
  background-color: #fafcfc;
  color: #1f2933;
  text-decoration: none;
}

.entry-card-title {
  font-size: 16px;
  font-weight: 600;
  color: #1f2933;
}

.entry-card-text {
  font-size: 14px;
  line-height: 1.6;
  color: #4b5563;
}

/* feedback.html */
.inner-shell {
  max-width: 1040px;
}

.page-title-area {
  padding: 20px 0 24px;
  border-bottom: 1px solid #eef1f3;
}

.type-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid #eef1f3;
}

.type-item {
  padding: 16px 0;
  border-bottom: 1px solid #eef1f3;
}

.type-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1f2933;
  margin: 0 0 6px;
}

.type-item p {
  font-size: 15px;
  line-height: 1.7;
  color: #4b5563;
  margin: 0;
}

.step-list-flow {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.step-list-flow .step-item {
  padding: 16px 0;
}

.section-neighbors {
  padding-bottom: 0;
}

.neighbor-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.neighbor-links li a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  background-color: #ffffff;
  border: 1px solid #d8dee4;
  border-radius: 6px;
  color: #1f2933;
  transition: border-color 0.18s ease;
}

.neighbor-links li a:hover,
.neighbor-links li a:focus-visible {
  border-color: #12655f;
  color: #1f2933;
  text-decoration: none;
}

.neighbor-links .entry-title {
  font-size: 16px;
  font-weight: 600;
  color: #1f2933;
}

.neighbor-links .entry-desc {
  font-size: 14px;
  line-height: 1.6;
  color: #4b5563;
}

/* about.html */
.page-container {
  max-width: 1040px;
}

.prose-block {
  margin-bottom: 20px;
}

.prose-block:last-child {
  margin-bottom: 0;
}

.sub-title {
  font-size: 17px;
  font-weight: 600;
  color: #1f2933;
  margin: 0 0 8px;
}

.prose-block p {
  font-size: 16px;
  line-height: 1.75;
  color: #4b5563;
  margin: 0;
}

.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid #eef1f3;
}

.boundary-item {
  display: flex;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid #eef1f3;
}

.boundary-name {
  flex: 0 0 130px;
  font-size: 15px;
  font-weight: 600;
  color: #1f2933;
}

.boundary-item p {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  line-height: 1.7;
  color: #4b5563;
  margin: 0;
}

.glossary-table {
  width: 100%;
  border: 1px solid #d8dee4;
  border-radius: 6px;
  overflow: hidden;
  font-size: 15px;
}

.glossary-table th,
.glossary-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid #eef1f3;
  line-height: 1.65;
}

.glossary-table thead th {
  background-color: #f6f8f8;
  font-size: 14px;
  font-weight: 600;
  color: #1f2933;
}

.glossary-table tbody tr:last-child td {
  border-bottom: none;
}

.glossary-table tbody th {
  width: 30%;
  font-weight: 600;
  color: #1f2933;
}

.inline-entry {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  margin-top: 12px;
  padding: 0 14px;
  font-size: 14px;
  font-weight: 600;
  color: #12655f;
  background-color: #e6f2f0;
  border-radius: 6px;
}

.inline-entry:hover,
.inline-entry:focus-visible {
  background-color: #d3e9e6;
  color: #12655f;
  text-decoration: none;
}

.text-link {
  color: #1d6f7a;
  font-weight: 600;
}

/* 404 */
.error-main {
  padding: 64px 0;
}

.error-wrap {
  max-width: 720px;
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  line-height: 1;
  color: #12655f;
  margin: 0 0 12px;
  font-variant-numeric: tabular-nums;
}

.error-wrap h1 {
  font-size: 28px;
  font-weight: 700;
  color: #1f2933;
  margin: 0 0 12px;
}

.error-lead {
  font-size: 16px;
  line-height: 1.75;
  color: #4b5563;
  margin: 0 0 24px;
}

.error-block {
  margin-bottom: 24px;
  padding: 18px;
  background-color: #ffffff;
  border: 1px solid #d8dee4;
  border-radius: 6px;
}

.error-block h2 {
  font-size: 18px;
  font-weight: 600;
  color: #1f2933;
  margin: 0 0 10px;
}

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

.error-reason-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: #4b5563;
}

.error-reason-list li::before {
  content: "·";
  position: absolute;
  left: 4px;
  top: 0;
  color: #12655f;
  font-weight: 700;
}

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

.error-next-list a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  font-size: 14px;
  color: #12655f;
  background-color: #e6f2f0;
  border-radius: 6px;
}

.error-next-list a:hover,
.error-next-list a:focus-visible {
  background-color: #d3e9e6;
  text-decoration: none;
}

.error-note {
  font-size: 15px;
  line-height: 1.7;
  color: #4b5563;
  margin: 0;
}

.error-action {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

/* =========================================================
   responsive
   ========================================================= */
@media (max-width: 1024px) {
  .hero-focus-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 32px;
  }

  .hero-text h1 {
    font-size: 30px;
  }

  .channel-feed-layout,
  .channel-feed-layout.sidebar-left {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 28px;
  }

  .feed-card {
    grid-template-columns: 160px minmax(0, 1fr);
  }

  .topic-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .basis-list,
  .neighbor-grid,
  .structure-blocks {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (max-width: 768px) {
  body.site-body {
    font-size: 16px;
  }

  .container {
    padding: 0 16px;
  }

  .header-brand-inner {
    min-height: 56px;
  }

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

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

  .nav-toggle {
    display: inline-flex;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 4px 0 8px;
    border-top: 1px solid #eef1f3;
  }

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

  .nav-item a {
    display: flex;
    width: 100%;
    min-height: 44px;
    padding: 0 8px;
    border-bottom: 1px solid #eef1f3;
    border-radius: 0;
  }

  .nav-item.is-current a {
    border-bottom-color: #eef1f3;
    background-color: #e6f2f0;
  }

  .channel-tag-band {
    padding: 8px 0 12px;
    gap: 6px;
  }

  .channel-tag-band a {
    min-height: 30px;
    padding: 0 10px;
    font-size: 12px;
  }

  .breadcrumb {
    padding: 14px 16px 0;
    font-size: 13px;
  }

  .page-header {
    padding: 12px 16px 0;
  }

  .page-title {
    font-size: 24px;
    line-height: 1.3;
  }

  .hero-focus {
    padding: 24px 0 32px;
  }

  .hero-focus-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .hero-text h1 {
    font-size: 24px;
    line-height: 1.3;
  }

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

  .hero-actions .btn {
    flex: 1 1 auto;
    min-height: 44px;
  }

  .page-layout {
    padding: 32px 16px;
  }

  .channel-feed-layout,
  .channel-feed-layout.sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .channel-rail {
    padding: 16px;
    order: -1;
  }

  .rail-list {
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .rail-item {
    flex: 0 0 auto;
    border-bottom: none;
  }

  .rail-item a {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    min-height: 44px;
    padding: 8px 12px;
    background-color: #f6f8f8;
    border: 1px solid #e4e9ec;
    border-radius: 6px;
    white-space: nowrap;
  }

  .rail-desc {
    font-size: 12px;
    color: #8a939c;
  }

  .rail-arrow {
    display: none;
  }

  .feed-card {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    padding: 12px;
  }

  .feed-thumb img {
    aspect-ratio: 16 / 9;
  }

  .feed-title {
    font-size: 16px;
  }

  .feed-desc {
    font-size: 14px;
  }

  .topic-section,
  .table-section,
  .check-section,
  .faq-section {
    padding: 36px 0;
  }

  .topic-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .entry-strip {
    padding: 28px 0;
  }

  .entry-strip-title {
    font-size: 19px;
  }

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

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

  .section-head h2 {
    font-size: 19px;
  }

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

  .page-title-inner,
  .page-hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .page-anchor,
  .page-anchor-nav {
    display: none;
  }

  .basis-list,
  .neighbor-grid,
  .structure-blocks {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .step-item {
    gap: 12px;
  }

  .step-no,
  .step-number {
    width: 28px;
    height: 28px;
    font-size: 13px;
  }

  .data-table {
    min-width: 560px;
    font-size: 14px;
  }

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

  .data-table .col-name,
  .data-table .col-channel {
    width: 25%;
  }

  .glossary-table tbody th {
    display: block;
    width: 100%;
    padding-bottom: 0;
    border-bottom: none;
    background-color: #f6f8f8;
  }

  .glossary-table tbody td {
    display: block;
    width: 100%;
    padding-top: 6px;
  }

  .glossary-table tbody tr {
    display: block;
    border-bottom: 1px solid #eef1f3;
  }

  .glossary-table tbody tr:last-child {
    border-bottom: none;
  }

  .boundary-item {
    flex-direction: column;
    gap: 4px;
  }

  .boundary-name {
    flex: none;
  }

  .related-links {
    padding: 14px 16px;
    gap: 8px 16px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    padding-top: 28px;
    padding-bottom: 20px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 6px;
  }

  .error-main {
    padding: 40px 0;
  }

  .error-code {
    font-size: 48px;
  }

  .error-wrap h1 {
    font-size: 22px;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 22px;
  }

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

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

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}