/* ==========================================================================
   黑料在线 hfclzn.cn — 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* ==========================================================================
   base
   ========================================================================== */

:root {
  --paper: #FAFAF7;
  --surface: #FFFFFF;
  --ink: #1F2328;
  --ink-soft: #5B6470;
  --line: #DDDCD6;
  --line-strong: #C8C7C0;
  --rust: #B45309;
  --rust-soft: #FDF3E7;
  --dark: #23262B;
  --dark-soft: #A9AEB6;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --shell: 1120px;
  --content: 720px;
  --header-h: 64px;
}

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

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

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

p {
  margin: 0;
}

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

dl,
dd,
dt {
  margin: 0;
}

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

a {
  color: var(--ink);
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease;
}

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

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

figure {
  margin: 0;
}

strong {
  font-weight: 600;
}

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

/* ==========================================================================
   layout — 全站骨架
   ========================================================================== */

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--paper);
  font-family: var(--sans);
  color: var(--ink);
}

/* 页头：吸顶 + 1px 下边线 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: var(--surface);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  width: 100%;
  max-width: var(--shell);
  height: var(--header-h);
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  flex: 0 0 auto;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ink);
  white-space: nowrap;
}

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

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

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

.nav-list > li {
  flex: 0 0 auto;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  height: 100%;
  padding: 0 12px;
  font-size: 15px;
  line-height: var(--header-h);
  color: var(--ink);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--rust);
}

.nav-link.is-current {
  color: var(--rust);
  border-bottom-color: var(--rust);
  font-weight: 600;
}

/* 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;
  border: 1px solid var(--line);
  border-radius: 4px;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--ink);
}

.header-cta {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--surface);
  background-color: var(--rust);
  border-radius: 4px;
  white-space: nowrap;
}

.header-cta:hover {
  color: var(--surface);
  background-color: #96450A;
}

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

.home-main {
  display: block;
}

.inner-main {
  display: block;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 28px 24px 72px;
}

/* 页脚 */
.site-footer {
  margin-top: auto;
  background-color: var(--dark);
  color: var(--dark-soft);
}

.footer-inner {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px 40px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 48px 24px 32px;
}

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

.footer-list > li + li {
  margin-top: 8px;
}

.footer-list a {
  font-size: 14px;
  color: var(--dark-soft);
}

.footer-list a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 18px 24px 26px;
  border-top: 1px solid #383C42;
  font-size: 13px;
  color: var(--dark-soft);
}

.footer-brand {
  font-weight: 600;
  color: #FFFFFF;
}

.footer-note {
  flex: 1 1 auto;
  min-width: 200px;
}

.footer-copy {
  flex: 0 0 auto;
}

/* ==========================================================================
   components — 通用组件
   ========================================================================== */

/* 章节编号 */
.section-index,
.section-no {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--rust);
  text-transform: uppercase;
}

/* 区块标题组（首页） */
.section-head {
  max-width: var(--content);
  margin-bottom: 26px;
}

.section-head h2 {
  margin: 8px 0 10px;
  font-size: 22px;
}

.section-desc {
  font-size: 15px;
  color: var(--ink-soft);
}

/* 内页区块标题 */
.section-heading,
.page-content h2,
.content-column h2,
.main-column h2 {
  font-size: 22px;
}

.section-intro,
.section-lead,
.block-intro {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink-soft);
  max-width: var(--content);
}

/* 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: 4px;
  border: 1px solid transparent;
  white-space: nowrap;
}

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

.btn-primary:hover {
  color: #FFFFFF;
  background-color: #96450A;
  border-color: #96450A;
}

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

.btn-ghost:hover {
  color: var(--rust);
  border-color: var(--rust);
}

/* 文字链接 */
.text-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--rust);
  border-bottom: 1px solid transparent;
}

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

/* 行内详情链接 */
.row-link,
.region-link,
.related-link,
.next-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--rust);
  border-bottom: 1px solid transparent;
}

.row-link:hover,
.region-link:hover,
.related-link:hover,
.next-link:hover {
  border-bottom-color: var(--rust);
}

/* 图注 */
.figure-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* 图片容器 */
.hero-figure img,
.content-figure img,
.object-figure img,
.region-figure img,
.block-figure img,
.section-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 4px;
  background-color: #EFEEE9;
}

/* 筛选标签条 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.filter-tag {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  font-size: 14px;
  color: var(--ink-soft);
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.filter-tag:hover {
  color: var(--rust);
  border-color: var(--rust);
}

.filter-tag.is-active {
  color: #FFFFFF;
  background-color: var(--rust);
  border-color: var(--rust);
}

.filter-reset-wrap {
  margin-top: 16px;
}

.filter-reset {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--rust);
  background-color: var(--surface);
  border: 1px solid var(--rust);
  border-radius: 4px;
}

.filter-reset:hover {
  color: #FFFFFF;
  background-color: var(--rust);
}

/* 无匹配提示 */
.empty-state {
  padding: 16px 18px;
  font-size: 15px;
  color: var(--ink-soft);
  background-color: var(--rust-soft);
  border: 1px solid #EAD9C3;
  border-radius: 4px;
}

.empty-text {
  font-size: 15px;
  color: var(--ink-soft);
}

.empty-reset {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  margin-top: 12px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 600;
  color: #FFFFFF;
  background-color: var(--rust);
  border-radius: 4px;
}

.empty-reset:hover {
  background-color: #96450A;
}

/* 对象标签 */
.object-tabs,
.object-tabs .tab-bar {
  margin-bottom: 22px;
}

.object-tabs > h2 {
  font-size: 22px;
}

.object-tabs > p {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink-soft);
  max-width: var(--content);
}

.object-tabs .tab-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.object-tab,
.tab-button {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-soft);
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.object-tab:hover,
.tab-button:hover {
  color: var(--rust);
  border-color: var(--rust);
}

.object-tab.is-active,
.tab-button.is-active {
  color: #FFFFFF;
  background-color: var(--rust);
  border-color: var(--rust);
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--ink-soft);
}

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

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

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

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

/* 页面标题区 */
.page-header {
  margin-bottom: 26px;
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.35;
}

.page-head {
  margin-bottom: 26px;
}

.page-lead,
.page-intro {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink-soft);
  max-width: var(--content);
}

/* 内页两列布局 */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.page-layout.sidebar-left {
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 40px;
}

/* 锚点目录 */
.anchor-nav {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  align-self: start;
  padding: 16px 16px 18px;
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.anchor-title,
.anchor-nav-title {
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--ink-soft);
  text-transform: uppercase;
}

.anchor-list > li + li,
.anchor-nav-list > li + li {
  margin-top: 6px;
}

.anchor-list a,
.anchor-nav-list a,
.anchor-link {
  display: block;
  padding: 6px 8px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
  border-left: 2px solid transparent;
  border-radius: 0 4px 4px 0;
}

.anchor-list a:hover,
.anchor-nav-list a:hover,
.anchor-link:hover {
  color: var(--rust);
  background-color: var(--rust-soft);
}

.anchor-list a.is-active,
.anchor-nav-list a.is-active,
.anchor-link.is-active {
  color: var(--rust);
  font-weight: 600;
  border-left-color: var(--rust);
  background-color: var(--rust-soft);
}

/* 内容列 */
.content-column,
.main-column {
  min-width: 0;
  max-width: var(--content);
}

.content-section + .content-section,
.content-block + .content-block {
  margin-top: 44px;
}

/* 内容图 */
.content-figure,
.object-figure,
.region-figure,
.block-figure {
  margin: 22px 0;
}

.content-figure img,
.object-figure img,
.block-figure img {
  max-height: 340px;
}

.region-figure img {
  max-height: 300px;
}

/* 相关栏目入口 */
.related-links {
  margin-top: 44px;
}

.related-list {
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

.related-list > li,
.related-row,
.related-item,
.next-row,
.next-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.related-desc,
.next-desc {
  flex: 1 1 240px;
  min-width: 200px;
  font-size: 14px;
  color: var(--ink-soft);
}

.related-note {
  margin-top: 18px;
  font-size: 14px;
  color: var(--ink-soft);
}

.related-note a {
  color: var(--rust);
  border-bottom: 1px solid transparent;
}

.related-note a:hover {
  border-bottom-color: var(--rust);
}

/* 内容区块小标题 */
.content-block h2 {
  font-size: 22px;
}

/* ==========================================================================
   pages — 首页
   ========================================================================== */

.home-main > .section {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 24px;
  border-bottom: 1px solid var(--line);
}

.home-main > .section:last-child {
  border-bottom: 0;
}

/* 首屏 */
.hero {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 24px 48px;
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 460px);
  gap: 48px;
  align-items: start;
}

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

.eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--rust);
  text-transform: uppercase;
}

.hero-copy h1 {
  margin: 12px 0 16px;
  font-size: 40px;
  line-height: 1.25;
}

.hero-lede {
  max-width: 560px;
  font-size: 16px;
  color: var(--ink-soft);
}

.match-list {
  margin: 24px 0 0;
  border-top: 1px solid var(--line);
}

.match-item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.match-index {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--rust);
}

.match-text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  color: var(--ink);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

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

.hero-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 4px;
  background-color: #EFEEE9;
}

/* 服务范围速览 */
.service-list {
  border-top: 1px solid var(--line);
}

.service-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.service-no {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--rust);
  padding-top: 4px;
}

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

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

.service-target,
.service-output {
  margin-top: 6px;
  font-size: 15px;
  color: var(--ink-soft);
}

.service-row .row-link {
  align-self: center;
}

/* 区域目录 */
.region-list {
  border-top: 1px solid var(--line);
}

.region-row {
  display: grid;
  grid-template-columns: minmax(0, 240px) minmax(0, 1fr) auto;
  gap: 20px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

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

.region-name {
  font-size: 16px;
}

.region-customer {
  margin-top: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}

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

.region-focus,
.region-delivery {
  font-size: 14px;
  color: var(--ink-soft);
}

.region-delivery {
  margin-top: 6px;
}

.region-row .row-link {
  align-self: center;
}

/* 选型对照预览 */
.compare-panel {
  margin-top: 4px;
}

.compare-cols {
  display: grid;
  grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
  gap: 32px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.compare-dim {
  min-width: 0;
}

.dim-list > li {
  padding: 8px 0;
  font-size: 15px;
  font-weight: 500;
  border-bottom: 1px solid var(--line);
}

.dim-list > li:last-child {
  border-bottom: 0;
}

.compare-desc {
  min-width: 0;
}

.dim-line {
  padding: 8px 0;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.dim-line:last-child {
  border-bottom: 0;
}

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

/* 交付四阶段 */
.stage-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}

.stage-item {
  min-width: 0;
  padding: 22px 24px 24px 0;
  border-right: 1px solid var(--line);
}

.stage-item:last-child {
  border-right: 0;
  padding-right: 0;
}

.stage-no {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--rust);
}

.stage-name {
  margin-top: 8px;
  font-size: 17px;
}

.stage-action {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink-soft);
}

.stage-check {
  margin-top: 10px;
  padding-top: 10px;
  font-size: 14px;
  color: var(--ink);
  border-top: 1px solid var(--line);
}

/* 交付确认清单 */
.checklist-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
  padding-top: 4px;
}

.checklist-col {
  min-width: 0;
}

.col-title {
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--ink-soft);
  text-transform: uppercase;
}

.check-list {
  border-top: 1px solid var(--line);
}

.check-list > li {
  padding: 12px 0;
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}

.deviation-list {
  border-top: 1px solid var(--line);
}

.deviation-list > li {
  padding: 12px 0;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

/* 首页 FAQ 摘要 */
.faq-brief-list {
  border-top: 1px solid var(--line);
}

.faq-brief-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.faq-brief-q {
  font-size: 16px;
  font-weight: 600;
}

.faq-brief-bg {
  margin-top: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}

.faq-brief-a {
  margin-top: 8px;
  font-size: 15px;
}

/* 首页相关入口 */
.related-links-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.related-links-label {
  flex: 0 0 auto;
  font-size: 15px;
  font-weight: 600;
}

/* ==========================================================================
   pages — 内页共用模块
   ========================================================================== */

/* 服务条目 */
.service-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.service-item:first-of-type {
  border-top: 1px solid var(--line);
}

.service-item-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.service-num {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--rust);
}

.service-fields {
  margin-top: 14px;
}

.service-fields dt {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.service-fields dd {
  margin: 4px 0 12px;
  font-size: 15px;
  color: var(--ink-soft);
}

.service-fields dd:last-child {
  margin-bottom: 0;
}

.service-link {
  margin-top: 14px;
}

.service-link a {
  font-size: 14px;
  font-weight: 600;
  color: var(--rust);
  border-bottom: 1px solid transparent;
}

.service-link a:hover {
  border-bottom-color: var(--rust);
}

/* 服务不含范围 */
.exclusion-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.exclusion-row {
  display: grid;
  grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

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

.exclusion-desc {
  font-size: 15px;
  color: var(--ink-soft);
}

/* 区域场景页条目 */
.region-directory .region-list {
  margin-top: 4px;
}

.region-row-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.region-no {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--rust);
}

.region-fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 8px 24px;
  margin-top: 10px;
}

.region-fields p {
  font-size: 14px;
  color: var(--ink-soft);
}

.region-row-body {
  min-width: 0;
}

.region-row-body .region-link {
  margin-top: 12px;
}

/* 跨区域协作 */
.cross-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.cross-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

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

.cross-item p {
  margin-top: 6px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* 区域场景页下一步入口 */
.region-next {
  margin-top: 44px;
}

.next-list {
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

/* 选型对照：对象面板 */
.object-panel {
  padding-top: 4px;
}

.object-panel > h2 {
  font-size: 22px;
}

.object-intro {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink-soft);
}

.dimension-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.dimension-list dt {
  padding-top: 14px;
  font-size: 15px;
  font-weight: 600;
}

.dimension-list dd {
  padding: 6px 0 14px;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

/* 选型确认信息清单 */
.checklist {
  margin-top: 18px;
}

.checklist-list {
  border-top: 1px solid var(--line);
}

.checklist-list > li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.check-item {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--rust);
}

.checklist-list > li p {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  color: var(--ink-soft);
}

/* 常见选型偏差 */
.deviation {
  margin-top: 44px;
}

.deviation-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.deviation-item:first-of-type {
  border-top: 1px solid var(--line);
}

.deviation-item h3 {
  font-size: 16px;
}

.deviation-item p {
  margin-top: 8px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* 交付阶段 */
.delivery-stages > h2 {
  font-size: 22px;
}

.stage-block {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.stage-block:first-of-type {
  border-top: 1px solid var(--line);
}

.stage-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.stage-head h3 {
  font-size: 17px;
}

.stage-label {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--rust);
}

.stage-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px 40px;
  margin-top: 14px;
}

.stage-actions,
.stage-confirm {
  min-width: 0;
  font-size: 15px;
  color: var(--ink-soft);
}

.stage-confirm {
  padding-left: 24px;
  border-left: 1px solid var(--line);
  color: var(--ink);
}

/* 批次组织与偏差处理 */
.handling-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.handling-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.handling-case {
  font-size: 15px;
  font-weight: 600;
}

.handling-path {
  margin-top: 6px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* 包装与运输方式确认 */
.packing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 20px;
}

.packing-item {
  min-width: 0;
  padding: 18px 18px 20px;
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.packing-item h3 {
  font-size: 16px;
}

.packing-item p {
  margin-top: 8px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* FAQ 页 */
.faq-group {
  margin-top: 40px;
}

.faq-group:first-of-type {
  margin-top: 0;
}

.group-title {
  font-size: 22px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.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;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 18px;
  color: var(--rust);
  line-height: 1;
}

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

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

.faq-body {
  padding: 0 0 18px;
}

.faq-context {
  font-size: 14px;
  color: var(--ink-soft);
}

.faq-answer {
  margin-top: 8px;
  font-size: 15px;
}

.faq-next {
  margin-top: 10px;
  font-size: 14px;
}

.faq-next a {
  color: var(--rust);
  border-bottom: 1px solid transparent;
}

.faq-next a:hover {
  border-bottom-color: var(--rust);
}

/* FAQ 反馈说明 */
.feedback-note {
  margin-top: 44px;
  padding: 22px 24px;
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.feedback-note .section-title {
  font-size: 18px;
}

.feedback-note p {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* 合作入口页 */
.step-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.step-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

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

.step-desc {
  margin-top: 6px;
  font-size: 15px;
  color: var(--ink-soft);
}

.agenda-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.agenda-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 8px 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.agenda-index {
  grid-row: span 2;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--rust);
  padding-top: 4px;
}

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

.agenda-desc {
  font-size: 15px;
  color: var(--ink-soft);
}

.checklist {
  margin-top: 18px;
}

.checklist-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.checklist-item:first-child {
  border-top: 1px solid var(--line);
}

.checklist-name {
  font-size: 16px;
}

.checklist-desc {
  margin-top: 6px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ==========================================================================
   pages — 404
   ========================================================================== */

.error-main {
  display: block;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 72px 24px 96px;
}

.error-block {
  max-width: var(--content);
}

.error-block h1 {
  margin: 12px 0 16px;
  font-size: 28px;
}

.error-lead {
  font-size: 16px;
  color: var(--ink-soft);
}

.error-links {
  margin-top: 26px;
  border-top: 1px solid var(--line);
}

.error-links > li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.error-links a {
  font-size: 15px;
  font-weight: 600;
  color: var(--rust);
  border-bottom: 1px solid transparent;
}

.error-links a:hover {
  border-bottom-color: var(--rust);
}

.error-action {
  margin-top: 28px;
}

.error-action .btn-primary {
  display: inline-flex;
}

/* ==========================================================================
   responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .header-inner {
    padding: 0 16px;
    gap: 16px;
  }

  .nav-link {
    padding: 0 9px;
    font-size: 14px;
  }

  .inner-main {
    padding: 24px 16px 64px;
  }

  .home-main > .section,
  .hero {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
    gap: 32px;
  }

  .page-layout.sidebar-left {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 32px;
  }

  .footer-inner {
    padding: 40px 16px 28px;
  }

  .footer-bottom {
    padding: 16px 16px 24px;
  }

  .stage-item {
    padding-right: 18px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 56px;
  }

  /* 页头：汉堡 + 折叠导航 */
  .header-inner {
    gap: 12px;
  }

  .brand {
    font-size: 17px;
  }

  .nav-toggle {
    display: flex;
    order: 2;
    margin-left: auto;
  }

  .header-cta {
    order: 3;
    height: 34px;
    padding: 0 12px;
    font-size: 13px;
  }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    order: 4;
    background-color: var(--surface);
    border-bottom: 1px solid var(--line);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: 70vh;
    overflow-y: auto;
    padding: 8px 16px 16px;
  }

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

  .nav-list > li + li {
    border-top: 1px solid var(--line);
  }

  .nav-link {
    min-height: 48px;
    padding: 0 4px;
    font-size: 15px;
    line-height: 48px;
    border-bottom: 0;
    border-left: 2px solid transparent;
  }

  .nav-link.is-current {
    border-bottom: 0;
    border-left-color: var(--rust);
    padding-left: 10px;
  }

  /* 首屏单列 */
  .hero {
    padding-top: 32px;
    padding-bottom: 36px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .hero-copy h1 {
    font-size: 28px;
  }

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

  .hero-figure img {
    aspect-ratio: 16 / 10;
  }

  /* 区块间距 */
  .home-main > .section {
    padding-top: 36px;
    padding-bottom: 36px;
  }

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

  .section-head h2,
  .section-heading,
  .page-content h2,
  .content-column h2,
  .main-column h2,
  .content-block h2,
  .group-title {
    font-size: 19px;
  }

  /* 内页骨架 */
  .inner-main {
    padding: 20px 16px 56px;
  }

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

  .page-header,
  .page-head {
    margin-bottom: 20px;
  }

  /* 两列转单列：正文在前，锚点目录在后 */
  .page-layout,
  .page-layout.sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .page-layout.sidebar-left > .anchor-nav {
    order: 2;
  }

  .page-layout.sidebar-left > .content-column,
  .page-layout.sidebar-left > .main-column,
  .page-layout.sidebar-left > .page-content {
    order: 1;
  }

  .anchor-nav {
    position: static;
    padding: 14px 14px 16px;
  }

  .anchor-list,
  .anchor-nav-list {
    display: flex;
    flex-wrap: nowrap;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .anchor-list > li + li,
  .anchor-nav-list > li + li {
    margin-top: 0;
  }

  .anchor-list a,
  .anchor-nav-list a,
  .anchor-link {
    white-space: nowrap;
    border-left: 0;
    border-bottom: 2px solid transparent;
    border-radius: 4px 4px 0 0;
    padding: 8px 10px;
  }

  .anchor-list a.is-active,
  .anchor-nav-list a.is-active,
  .anchor-link.is-active {
    border-left-color: transparent;
    border-bottom-color: var(--rust);
  }

  /* 首页条目行 */
  .service-row {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 6px 12px;
  }

  .service-row .row-link {
    grid-column: 2;
    justify-self: start;
    align-self: start;
  }

  .region-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .region-row .row-link {
    justify-self: start;
  }

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

  .checklist-cols {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

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

  .stage-item {
    padding: 18px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  /* 内页模块 */
  .service-item {
    padding: 20px 0;
  }

  .exclusion-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .region-fields {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .stage-body {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .stage-confirm {
    padding-left: 0;
    padding-top: 12px;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

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

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

  .related-list > li,
  .related-row,
  .related-item,
  .next-row,
  .next-item,
  .related-links-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .related-desc,
  .next-desc {
    flex: 0 0 auto;
    min-width: 0;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 20px;
    padding: 32px 16px 24px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 16px 16px 22px;
  }

  .footer-note {
    min-width: 0;
  }

  /* 404 */
  .error-main {
    padding: 44px 16px 64px;
  }

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

@media (max-width: 480px) {
  .hero-copy h1 {
    font-size: 25px;
  }

  .hero-actions {
    gap: 10px;
  }

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

  .header-cta {
    display: none;
  }

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

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

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

  .agenda-index {
    grid-row: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}