/* ==========================================================================
   海角社区 全站样式表
   qfscix.com
   ========================================================================== */

/* ==========================================================================
   Base
   ========================================================================== */

:root {
  --color-navy: #16384a;
  --color-fog: #e9f2f5;
  --color-white: #ffffff;
  --color-teal: #0e6e75;
  --color-amber: #a3581d;
  --color-red: #b53a2e;
  --color-ink: #3a4a55;
  --color-navy-light: #245069;
  --color-border: #d4e2e8;
  --color-text-soft: #5c707c;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --container-width: 1180px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-card: 0 1px 3px rgba(22, 56, 74, 0.06);
  --transition-base: 0.2s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-ink);
  background-color: var(--color-fog);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-teal);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-navy);
}

button {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

figure {
  margin: 0;
}

/* 统一容器宽度 */
.header-inner,
.main-content,
.home-main,
.inner-main,
.footer-inner {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   Layout - 页头
   ========================================================================== */

.site-header {
  background-color: var(--color-navy);
  color: #dbeaf0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 0 24px;
  gap: 24px;
}

.site-brand {
  display: flex;
  flex-direction: column;
  gap: 0;
  flex-shrink: 0;
  line-height: 1.3;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.brand-slogan {
  font-size: 12px;
  color: #9db9c4;
  letter-spacing: 0.01em;
}

.site-brand:hover .brand-name {
  color: #ffffff;
}

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

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-list li a {
  display: block;
  padding: 8px 12px;
  font-size: 15px;
  line-height: 1.5;
  color: #c8dce4;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.nav-list li a:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.08);
}

.nav-list li a.is-current {
  color: #ffffff;
  font-weight: 600;
  background-color: rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 -2px 0 var(--color-teal);
}

/* 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: 10px;
  background: transparent;
  border-radius: var(--radius-sm);
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #dbeaf0;
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* 移动端导航展开状态 */
.nav-list.is-open {
  display: flex;
}

/* ==========================================================================
   Layout - 页脚
   ========================================================================== */

.site-footer {
  background-color: var(--color-navy);
  color: #b8cdd6;
  margin-top: 64px;
}

.footer-inner {
  padding: 48px 24px 0;
}

.footer-cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand {
  padding-right: 24px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 14px;
  line-height: 1.7;
  color: #9db9c4;
}

.footer-col-title {
  font-size: 15px;
  font-weight: 600;
  color: #e6f0f4;
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: #b8cdd6;
  transition: color var(--transition-base);
}

.footer-col ul li a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 16px 0;
  font-size: 13px;
  color: #8ba8b3;
}

.footer-bottom p {
  margin: 0;
}

/* ==========================================================================
   Layout - 通用内页框架
   ========================================================================== */

.site-main {
  min-height: 60vh;
}

.inner-main {
  padding: 24px 24px 48px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-soft);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-teal);
  transition: color var(--transition-base);
}

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

.breadcrumb-sep {
  color: #9fb2bc;
}

.breadcrumb-current {
  color: var(--color-ink);
  font-weight: 500;
}

/* 页面标题区 */
.page-header {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 20px;
  margin-bottom: 32px;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-navy);
  border-left: 4px solid var(--color-teal);
  padding-left: 16px;
  line-height: 1.3;
  margin-bottom: 10px;
}

.page-description {
  font-size: 16px;
  color: var(--color-text-soft);
  max-width: 780px;
  line-height: 1.75;
}

/* ==========================================================================
   Components - 按钮
   ========================================================================== */

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
}

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

.btn-primary:hover {
  background-color: var(--color-navy);
  color: #ffffff;
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-teal);
  border: 1px solid var(--color-teal);
}

.btn-secondary:hover {
  background-color: rgba(14, 110, 117, 0.08);
  color: var(--color-navy);
  border-color: var(--color-navy);
  transform: translateY(-1px);
}

/* ==========================================================================
   Components - 状态灯 / 状态点
   ========================================================================== */

.topic-state,
.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  line-height: 1.4;
  white-space: nowrap;
}

.topic-state::before,
.status-dot::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.state-normal,
.status-normal {
  color: var(--color-text-soft);
}

.state-normal::before,
.status-normal::before {
  background-color: #9fb2bc;
}

.state-new,
.status-new {
  color: var(--color-teal);
}

.state-new::before,
.status-new::before {
  background-color: var(--color-teal);
  box-shadow: 0 0 0 2px rgba(14, 110, 117, 0.18);
}

.state-hot,
.status-hot {
  color: var(--color-amber);
}

.state-hot::before,
.status-hot::before {
  background-color: var(--color-amber);
  box-shadow: 0 0 0 2px rgba(163, 88, 29, 0.18);
}

.state-fold,
.status-folded {
  color: var(--color-red);
}

.state-fold::before,
.status-folded::before {
  background-color: var(--color-red);
}

.status-replied {
  color: var(--color-teal);
}

.status-replied::before {
  background-color: var(--color-teal);
}

/* ==========================================================================
   Components - 图片与媒体
   ========================================================================== */

.content-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-fog);
}

.content-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.content-media figcaption {
  padding: 8px 12px;
  font-size: 13px;
  color: var(--color-text-soft);
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   Components - 相关链接条
   ========================================================================== */

.related-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 16px 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin: 32px 0 0;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-navy);
}

.related-links-item {
  font-size: 14px;
  color: var(--color-teal);
  transition: color var(--transition-base);
}

.related-links-item:hover {
  color: var(--color-navy);
}

/* ==========================================================================
   Pages - 首页
   ========================================================================== */

.home-main {
  padding: 0 24px 48px;
}

/* Hero 区 */
.home-hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 48px 0 40px;
}

.hero-copy h1 {
  font-size: 30px;
  font-weight: 700;
  border-left: 4px solid var(--color-teal);
  padding-left: 16px;
  margin-bottom: 16px;
  line-height: 1.3;
}

.hero-lead {
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-text-soft);
  margin-bottom: 24px;
  max-width: 560px;
}

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

.hero-media {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
}

.hero-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.hero-figure figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--color-text-soft);
  background-color: var(--color-white);
}

.hero-status-line {
  font-size: 14px;
  color: var(--color-text-soft);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-status-line::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-teal);
  flex-shrink: 0;
}

/* 首页主内容图 */
.content-media-primary {
  margin: 0 0 32px;
}

.content-media-primary img {
  width: 100%;
  height: auto;
  object-fit: cover;
  max-height: 380px;
}

/* 公告窄条 */
.notice-bar {
  background-color: var(--color-amber);
  color: #ffffff;
  border-radius: var(--radius-md);
  padding: 12px 20px;
  margin-bottom: 28px;
}

.notice-text {
  font-size: 15px;
  line-height: 1.6;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.notice-text a {
  color: #ffffff;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.notice-text a:hover {
  color: #ffe8d0;
}

/* 版块锚点导航轨 */
.board-anchor-nav {
  margin-bottom: 36px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.anchor-list {
  display: flex;
  gap: 10px;
  padding-bottom: 8px;
  min-width: max-content;
}

.anchor-chip {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-navy);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.anchor-chip:hover {
  background-color: var(--color-teal);
  color: #ffffff;
  border-color: var(--color-teal);
}

/* 版块话题长卷 */
.board-scroll {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-bottom: 40px;
}

.board-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 28px 20px;
  box-shadow: var(--shadow-card);
}

.board-head {
  border-bottom: 2px solid var(--color-fog);
  padding-bottom: 14px;
  margin-bottom: 16px;
}

.board-head h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 6px;
}

.board-desc {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.6;
}

.topic-preview-list {
  display: flex;
  flex-direction: column;
}

.topic-preview-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--color-border);
}

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

.topic-preview-item .topic-state {
  margin-top: 5px;
  flex-shrink: 0;
  min-width: 64px;
}

.topic-preview-item h3 {
  font-size: 16px;
  font-weight: 500;
  margin: 0;
  line-height: 1.5;
}

.topic-preview-item h3 a {
  color: var(--color-ink);
  transition: color var(--transition-base);
}

.topic-preview-item h3 a:hover {
  color: var(--color-teal);
}

.topic-meta {
  font-size: 13px;
  color: var(--color-text-soft);
  margin-top: 2px;
}

.board-more-link {
  padding-top: 12px;
  border-top: 1px solid var(--color-fog);
  text-align: right;
}

.board-more-link a {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-teal);
}

.board-more-link a:hover {
  color: var(--color-navy);
}

/* 行动双卡 */
.action-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.action-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.action-card h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 12px;
}

.action-card-start {
  border-top: 3px solid var(--color-teal);
}

.action-card-avoid {
  border-top: 3px solid var(--color-red);
}

.start-list {
  list-style: none;
  counter-reset: start-step;
}

.start-list li {
  counter-increment: start-step;
  padding: 8px 0;
  font-size: 15px;
  line-height: 1.6;
  display: flex;
  gap: 10px;
  align-items: baseline;
}

.start-list li::before {
  content: counter(start-step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  background-color: var(--color-teal);
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 50%;
  transform: translateY(3px);
}

.start-list li a {
  font-weight: 600;
  color: var(--color-teal);
}

.avoid-list li {
  padding: 8px 0;
  font-size: 15px;
  line-height: 1.6;
  display: flex;
  gap: 10px;
  align-items: baseline;
}

.avoid-list li::before {
  content: "×";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  background-color: var(--color-red);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 50%;
  transform: translateY(3px);
}

/* ==========================================================================
   Pages - 版块总览 (boards.html)
   ========================================================================== */

.page-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
  align-items: start;
}

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

.layout-side {
  min-width: 0;
}

.boards-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.boards-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 20px;
}

.board-group {
  margin-bottom: 28px;
}

.group-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-navy);
  background-color: var(--color-fog);
  display: inline-block;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.board-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.board-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.board-card:hover {
  box-shadow: 0 4px 12px rgba(22, 56, 74, 0.1);
  transform: translateY(-2px);
}

.board-card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.board-card-head h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-navy);
}

.board-tag {
  font-size: 12px;
  color: var(--color-teal);
  background-color: rgba(14, 110, 117, 0.08);
  border-radius: 999px;
  padding: 2px 10px;
  font-weight: 500;
}

.board-fit {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.board-fit strong {
  color: var(--color-navy);
}

.board-not-fit {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-soft);
}

.board-not-fit strong {
  color: var(--color-red);
}

.board-tip {
  font-size: 13px;
  color: var(--color-text-soft);
  border-left: 3px solid var(--color-amber);
  padding-left: 10px;
  margin-top: 10px;
  line-height: 1.6;
}

.boards-home-note {
  display: flex;
  gap: 20px;
  align-items: center;
  background-color: var(--color-fog);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-top: 8px;
}

.boards-note-figure {
  width: 200px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.boards-note-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.boards-note-text h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 6px;
}

.boards-note-text p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.6;
  margin-bottom: 4px;
}

/* 侧栏 */
.side-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.side-card h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 16px;
  border-bottom: 2px solid var(--color-fog);
  padding-bottom: 10px;
}

.choose-steps {
  list-style: none;
  counter-reset: choose-step;
}

.choose-steps li {
  counter-increment: choose-step;
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--color-border);
  align-items: flex-start;
}

.choose-steps li:last-child {
  border-bottom: none;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  background-color: var(--color-teal);
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 50%;
  transform: translateY(3px);
}

.step-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-ink);
}

.step-text strong {
  display: block;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 2px;
}

.side-links {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-fog);
}

.side-links p {
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 6px;
}

.side-links a {
  font-weight: 600;
  color: var(--color-teal);
}

/* ==========================================================================
   Pages - 话题动态 (topics.html)
   ========================================================================== */

.topic-legend {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-card);
}

.topic-legend .section-title,
.topic-timeline .section-title,
.sorting-rules .section-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 16px;
}

.content-media-inline {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  background-color: var(--color-fog);
  border-radius: var(--radius-md);
  padding: 12px;
}

.content-media-inline img {
  width: 160px;
  height: 90px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.content-media-inline figcaption {
  font-size: 14px;
  color: var(--color-text-soft);
  background: none;
  border: none;
  padding: 0;
  line-height: 1.6;
}

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

.legend-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  background-color: var(--color-fog);
  border-radius: var(--radius-md);
}

.legend-item .status-dot {
  font-weight: 600;
  font-size: 13px;
}

.legend-desc {
  font-size: 13px;
  color: var(--color-text-soft);
  line-height: 1.5;
}

/* 时间线 */
.topic-timeline {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-card);
}

.timeline-group {
  margin-bottom: 28px;
}

.timeline-group:last-child {
  margin-bottom: 0;
}

.timeline-period {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-navy);
  background-color: var(--color-fog);
  display: inline-block;
  padding: 4px 16px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.topic-list {
  display: flex;
  flex-direction: column;
}

.topic-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--color-border);
}

.topic-row:last-child {
  border-bottom: none;
}

.topic-main {
  min-width: 0;
  flex: 1;
}

.topic-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: 4px;
  line-height: 1.5;
}

.topic-title a {
  color: var(--color-ink);
}

.topic-title a:hover {
  color: var(--color-teal);
}

.topic-meta {
  font-size: 13px;
  color: var(--color-text-soft);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.topic-row .status-dot {
  flex-shrink: 0;
}

/* 排序规则 */
.sorting-rules {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.rules-intro {
  font-size: 15px;
  color: var(--color-text-soft);
  margin-bottom: 20px;
  line-height: 1.7;
}

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

.rule-card {
  background-color: var(--color-fog);
  border-radius: var(--radius-md);
  padding: 20px;
  border-left: 3px solid var(--color-teal);
}

.rule-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.rule-card p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
}

.rule-card a {
  font-weight: 600;
  color: var(--color-teal);
  font-size: 14px;
}

.fold-note {
  background-color: #fdf3ea;
  border: 1px solid #f0d5b8;
  border-radius: var(--radius-md);
  padding: 20px;
  margin-top: 24px;
}

.fold-note-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-amber);
  margin-bottom: 10px;
}

.fold-list {
  list-style: none;
}

.fold-list li {
  font-size: 14px;
  color: var(--color-ink);
  padding: 4px 0;
  line-height: 1.6;
  display: flex;
  gap: 8px;
}

.fold-list li::before {
  content: "·";
  color: var(--color-amber);
  font-weight: 700;
}

.fold-more {
  margin-top: 12px;
  font-size: 14px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.fold-more a {
  font-weight: 600;
  color: var(--color-teal);
}

/* ==========================================================================
   Pages - 发帖指南 (posting-guide.html)
   ========================================================================== */

.container {
  max-width: var(--container-width);
  margin: 0 auto;
}

.guide-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-card);
}

.guide-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 12px;
}

.section-intro {
  font-size: 15px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 20px;
}

/* 自检清单 */
.checklist-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}

.check-step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background-color: var(--color-fog);
  border-radius: var(--radius-md);
  padding: 20px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  background-color: var(--color-teal);
  color: #ffffff;
  font-size: 16px;
  font-weight: 600;
  border-radius: 50%;
}

.step-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 6px;
}

.step-body p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
}

.step-body a {
  font-weight: 600;
  color: var(--color-teal);
  font-size: 14px;
}

/* 标题与正文 */
.writing-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.writing-card {
  background-color: var(--color-fog);
  border-radius: var(--radius-md);
  padding: 20px;
  border-top: 3px solid var(--color-teal);
}

.writing-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.writing-card p {
  font-size: 14px;
  color: var(--color-ink);
  line-height: 1.7;
  margin-bottom: 10px;
}

.example-list {
  list-style: none;
  margin-bottom: 10px;
}

.example-list li {
  font-size: 14px;
  padding: 4px 0;
  line-height: 1.6;
}

.example-good {
  color: var(--color-teal);
  font-weight: 500;
}

.example-good::before {
  content: "✓ ";
  font-weight: 700;
}

.example-bad {
  color: var(--color-red);
  font-weight: 500;
}

.example-bad::before {
  content: "× ";
  font-weight: 700;
}

/* 回帖礼仪 */
.reply-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.reply-card {
  background-color: var(--color-fog);
  border-radius: var(--radius-md);
  padding: 20px;
  border-left: 3px solid var(--color-amber);
}

.reply-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.reply-card p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
}

.section-outro {
  margin-top: 20px;
  font-size: 14px;
  color: var(--color-text-soft);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.section-outro a {
  font-weight: 600;
  color: var(--color-teal);
}

/* ==========================================================================
   Pages - 社区公约 (rules.html)
   ========================================================================== */

.rules-preface {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-card);
}

.preface-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.preface-content p {
  font-size: 15px;
  color: var(--color-ink);
  line-height: 1.8;
}

.term-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  list-style: none;
  background-color: var(--color-fog);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.term-list li {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.6;
}

.term-list li strong {
  color: var(--color-navy);
  font-weight: 600;
}

.rules-chapters {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 28px;
}

.rules-chapter {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.chapter-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.chapter-no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-teal);
  background-color: rgba(14, 110, 117, 0.08);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  flex-shrink: 0;
}

.chapter-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-navy);
}

.chapter-lead {
  font-size: 15px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-fog);
}

.rule-block {
  padding: 16px 0;
  border-bottom: 1px dashed var(--color-border);
}

.rule-block:last-of-type {
  border-bottom: none;
}

.rule-block .rule-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 6px;
}

.rule-block p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
}

.rule-note {
  background-color: #fdf3ea;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-top: 16px;
}

.rule-note p {
  font-size: 14px;
  color: var(--color-ink);
  line-height: 1.7;
}

.rule-note strong {
  color: var(--color-amber);
  font-weight: 600;
}

/* 争议处理 */
.dispute-process {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-card);
}

.process-intro {
  font-size: 15px;
  color: var(--color-text-soft);
  margin-bottom: 20px;
  line-height: 1.7;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  list-style: none;
}

.process-step {
  background-color: var(--color-fog);
  border-radius: var(--radius-md);
  padding: 20px;
  border-top: 3px solid var(--color-teal);
  position: relative;
}

.step-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-teal);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.step-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 6px;
}

.process-step p:last-child {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
}

/* 相关卡片 */
.related-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 16px;
}

.related-card h2.related-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 6px;
}

.related-card p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.6;
}

.related-card p a {
  font-weight: 600;
  color: var(--color-teal);
}

/* ==========================================================================
   Pages - 站点地图 (sitemap.html)
   ========================================================================== */

.sitemap-banner {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 28px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
}

.sitemap-banner img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.sitemap-banner figcaption {
  padding: 10px 16px;
  font-size: 14px;
  color: var(--color-text-soft);
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
}

.sitemap-groups-wrap {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-card);
}

.sitemap-groups-wrap > .section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 6px;
}

.sitemap-groups-wrap > p {
  font-size: 15px;
  color: var(--color-text-soft);
  margin-bottom: 24px;
  line-height: 1.7;
}

.sitemap-group-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.sitemap-group-card {
  background-color: var(--color-fog);
  border-radius: var(--radius-md);
  padding: 20px;
  border-top: 3px solid var(--color-teal);
}

.sitemap-group-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 6px;
}

.group-intro {
  font-size: 13px;
  color: var(--color-text-soft);
  line-height: 1.6;
  margin-bottom: 14px;
}

.sitemap-page-list {
  list-style: none;
}

.sitemap-page-list li {
  padding: 6px 0;
  border-bottom: 1px dashed var(--color-border);
}

.sitemap-page-list li:last-child {
  border-bottom: none;
}

.sitemap-page-list li a {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-teal);
  display: inline-block;
  margin-bottom: 2px;
}

.sitemap-page-list li p {
  font-size: 13px;
  color: var(--color-text-soft);
  line-height: 1.5;
}

/* 迷路提示 */
.lost-tip {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.lost-tip h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 16px;
}

.lost-tip-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.lost-tip-card {
  background-color: var(--color-fog);
  border-radius: var(--radius-md);
  padding: 20px;
  border-left: 3px solid var(--color-amber);
}

.tip-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-amber);
  margin-bottom: 6px;
}

.lost-tip-card p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 8px;
}

.lost-tip-card a {
  font-weight: 600;
  color: var(--color-teal);
  font-size: 14px;
}

/* ==========================================================================
   Pages - 站务反馈 (feedback.html)
   ========================================================================== */

.layout-shell {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 32px;
  align-items: start;
}

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

.sidebar-content {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.sidebar-content h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 14px;
  border-bottom: 2px solid var(--color-fog);
  padding-bottom: 10px;
}

.sidebar-links {
  list-style: none;
  margin-bottom: 16px;
}

.sidebar-links li {
  padding: 4px 0;
}

.sidebar-links li a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-teal);
}

.sidebar-links li a:hover {
  color: var(--color-navy);
}

.sidebar-content > p {
  font-size: 13px;
  color: var(--color-text-soft);
  line-height: 1.6;
  border-top: 1px solid var(--color-fog);
  padding-top: 12px;
}

/* 反馈分类卡片 */
.feedback-category-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-card);
}

.feedback-category-section h2,
.faq-section h2,
.process-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 20px;
}

.feedback-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.feedback-card {
  background-color: var(--color-fog);
  border-radius: var(--radius-md);
  padding: 20px;
  border-top: 3px solid var(--color-teal);
}

.feedback-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.feedback-card p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 8px;
}

.feedback-card a {
  font-weight: 600;
  color: var(--color-teal);
  font-size: 14px;
  display: inline-block;
  margin-top: 4px;
}

/* FAQ */
.faq-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-card);
}

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

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

.faq-item summary {
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-navy);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: background-color var(--transition-base);
  list-style: none;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: var(--color-teal);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

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

.faq-item[open] summary {
  background-color: var(--color-fog);
}

.faq-item summary:hover {
  background-color: var(--color-fog);
}

.faq-item p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
}

.faq-item p a {
  font-weight: 600;
  color: var(--color-teal);
}

/* 处理顺序 */
.process-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.process-section .process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  list-style: none;
  counter-reset: feedback-step;
}

.process-section .process-step {
  counter-increment: feedback-step;
  background-color: var(--color-fog);
  border-radius: var(--radius-md);
  padding: 20px;
  border-top: 3px solid var(--color-teal);
}

.process-section .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background-color: var(--color-teal);
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 50%;
  margin-bottom: 8px;
}

.process-section .process-step p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
}

.process-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--color-text-soft);
  border-left: 3px solid var(--color-amber);
  padding-left: 12px;
  line-height: 1.6;
}

/* 反馈页大图 */
.feedback-media {
  margin: 28px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
}

.feedback-media img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.feedback-media figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-text-soft);
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   Pages - 404
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  min-height: 60vh;
}

.error-panel {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  max-width: 640px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.error-code {
  font-family: var(--font-mono);
  font-size: 72px;
  font-weight: 700;
  color: var(--color-fog);
  line-height: 1;
  margin-bottom: 8px;
}

.error-panel h1 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 12px;
}

.error-lead {
  font-size: 16px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 24px;
}

.error-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.error-hint {
  font-size: 13px;
  color: var(--color-text-soft);
  line-height: 1.6;
}

/* ==========================================================================
   Responsive - 桌面小屏 (≤ 1024px)
   ========================================================================== */

@media (max-width: 1024px) {
  .home-hero {
    gap: 32px;
  }

  .board-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-layout {
    grid-template-columns: 1fr 300px;
    gap: 24px;
  }

  .layout-shell {
    grid-template-columns: 1fr 280px;
    gap: 24px;
  }

  .footer-cols {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 24px;
  }
}

/* ==========================================================================
   Responsive - 平板 (≤ 900px)
   ========================================================================== */

@media (max-width: 900px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background-color: var(--color-navy);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
    padding: 0 24px;
    display: block;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 16px;
  }

  .nav-list li a {
    padding: 12px 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 16px;
    border-radius: 0;
  }

  .nav-list li a.is-current {
    background: none;
    box-shadow: inset 3px 0 0 var(--color-teal);
  }

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

  .home-hero {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 0;
  }

  .hero-copy h1 {
    font-size: 26px;
  }

  .hero-media {
    max-width: 100%;
  }

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

  .rules-grid {
    grid-template-columns: 1fr;
  }

  .reply-cards {
    grid-template-columns: 1fr;
  }

  .sitemap-group-list {
    grid-template-columns: 1fr;
  }

  .footer-cols {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

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

/* ==========================================================================
   Responsive - 手机 (≤ 640px)
   ========================================================================== */

@media (max-width: 640px) {
  .header-inner {
    padding: 0 16px;
    min-height: 60px;
  }

  .brand-name {
    font-size: 18px;
  }

  .brand-slogan {
    font-size: 11px;
  }

  .site-nav {
    top: 60px;
    padding: 0 16px;
  }

  .home-main,
  .inner-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .home-hero {
    padding: 24px 0;
  }

  .hero-copy h1 {
    font-size: 24px;
    padding-left: 12px;
  }

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

  .hero-actions {
    flex-direction: column;
    gap: 10px;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  .content-media-primary img {
    max-height: 240px;
  }

  .notice-bar {
    padding: 10px 14px;
    font-size: 14px;
  }

  .board-section {
    padding: 20px 16px;
  }

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

  .topic-preview-item .topic-state {
    margin-top: 0;
  }

  .action-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .page-title {
    font-size: 24px;
    padding-left: 12px;
  }

  .page-description {
    font-size: 15px;
  }

  .breadcrumb {
    font-size: 13px;
    gap: 6px;
  }

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

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

  .layout-side {
    order: 2;
  }

  .sidebar-content {
    order: 2;
  }

  .board-cards {
    grid-template-columns: 1fr;
  }

  .boards-home-note {
    flex-direction: column;
    gap: 12px;
  }

  .boards-note-figure {
    width: 100%;
  }

  .topic-timeline,
  .topic-legend,
  .sorting-rules {
    padding: 20px 16px;
  }

  .content-media-inline {
    flex-direction: column;
    align-items: flex-start;
  }

  .content-media-inline img {
    width: 100%;
    height: 160px;
  }

  .legend-list {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .legend-item {
    flex-direction: row;
    align-items: center;
    gap: 10px;
  }

  .legend-desc {
    font-size: 13px;
  }

  .topic-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .timeline-period {
    font-size: 15px;
  }

  .guide-section,
  .rules-preface,
  .rules-chapter,
  .dispute-process,
  .sitemap-groups-wrap,
  .lost-tip,
  .feedback-category-section,
  .faq-section,
  .process-section {
    padding: 20px 16px;
  }

  .check-step {
    flex-direction: column;
    gap: 10px;
  }

  .step-number {
    width: 28px;
    height: 28px;
    font-size: 14px;
  }

  .writing-columns {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .term-list {
    grid-template-columns: 1fr;
    padding: 12px 16px;
  }

  .process-steps {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .process-section .process-steps {
    grid-template-columns: 1fr;
  }

  .feedback-card-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .lost-tip-cards {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .sitemap-banner img {
    height: 150px;
  }

  .faq-item summary {
    font-size: 15px;
    padding: 14px 16px;
  }

  .faq-item p {
    padding: 0 16px 14px;
  }

  .error-panel {
    padding: 32px 20px;
  }

  .error-code {
    font-size: 56px;
  }

  .footer-inner {
    padding: 32px 16px 0;
  }

  .footer-cols {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-bottom: 24px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .related-links {
    padding: 12px 16px;
    gap: 10px;
  }
}