/* ==========================================================================
   51吃瓜网 · 站点样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. base · 变量与基础样式
   -------------------------------------------------------------------------- */
:root {
  --ink: #0f1c24;
  --teal: #1f4d5a;
  --accent: #c46a2e;
  --paper: #f4f2ed;
  --line: #dfdcd2;
  --muted: #5e6b73;
  --white: #ffffff;
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", "Roboto Mono", Menlo, Consolas, monospace;
  --radius: 4px;
  --container: 1080px;
  --gap: 24px;
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--paper);
  -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;
}

a {
  color: var(--teal);
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease;
}

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

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

figure {
  margin: 0;
}

figcaption {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

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

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

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

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.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;
}


/* --------------------------------------------------------------------------
   2. layout · 页面骨架
   -------------------------------------------------------------------------- */
.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--paper);
}

.site-main {
  flex: 1 0 auto;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

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

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  width: 100%;
  max-width: var(--container);
  min-height: 64px;
  margin: 0 auto;
  padding: 0 24px;
}

.brand-mark {
  flex: 0 0 auto;
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0;
}

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

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

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

.nav-list li {
  display: flex;
}

.nav-list a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 15px;
  color: var(--muted);
  border-bottom: 2px solid transparent;
}

.nav-list a:hover {
  color: var(--teal);
  border-bottom-color: var(--line);
}

.nav-list a.is-current {
  color: var(--ink);
  font-weight: 600;
  border-bottom-color: var(--teal);
}

.tool-entry {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  font-size: 14px;
  color: var(--white);
  background-color: var(--teal);
  border: 1px solid var(--teal);
  border-radius: var(--radius);
}

.tool-entry:hover {
  color: var(--white);
  background-color: #173d48;
  border-color: #173d48;
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--ink);
  content: "";
}

.nav-toggle-bar {
  position: relative;
}

.nav-toggle-bar::before {
  position: absolute;
  top: -6px;
  left: 0;
}

.nav-toggle-bar::after {
  position: absolute;
  top: 6px;
  left: 0;
}

/* 移动端抽屉 */
.mobile-nav {
  background-color: var(--white);
  border-bottom: 1px solid var(--line);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  max-width: var(--container);
  margin: 0 auto;
  padding: 8px 24px 16px;
}

.mobile-nav-list a {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 0 4px;
  font-size: 16px;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

.mobile-nav-list a:hover {
  color: var(--teal);
}

/* 页脚 */
.site-footer {
  flex: 0 0 auto;
  background-color: var(--white);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px 24px;
  font-size: 13px;
  color: var(--muted);
}

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

.footer-brand .brand-mark {
  font-size: 15px;
}

.footer-desc {
  font-size: 13px;
  color: var(--muted);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  flex: 1 1 auto;
}

.footer-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 13px;
  color: var(--muted);
}

.footer-nav a:hover {
  color: var(--teal);
}

.footer-copy {
  flex: 0 0 auto;
  font-size: 13px;
  color: var(--muted);
}

/* 内页外壳 */
.inner-main {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 64px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 13px;
  color: var(--muted);
}

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

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

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

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

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

.page-title {
  font-size: clamp(28px, 3.6vw, 38px);
  line-height: 1.25;
  font-weight: 600;
  color: var(--ink);
}

.page-title {
  font-size: clamp(28px, 3.6vw, 38px);
}

/* 内页标题区公共节奏 */
.inner-main > .page-title,
.inner-main > .page-shell > .page-title {
  padding-top: 12px;
}

.page-lead {
  max-width: 68ch;
  margin-top: 12px;
  font-size: 17px;
  line-height: 1.7;
  color: var(--muted);
}

.page-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-top: 14px;
  font-size: 13px;
  color: var(--muted);
}

.meta-code,
.meta-label {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--teal);
}

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

.page-kicker {
  margin-top: 12px;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--teal);
}

.eyebrow {
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--teal);
}

.lead {
  margin-top: 10px;
  font-size: 17px;
  line-height: 1.7;
  color: var(--muted);
}

.meta-line {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
}

/* 内页区块通用 */
.inner-main section {
  margin-top: 56px;
}

.inner-main .section-head {
  margin-bottom: 24px;
}

.section-head {
  margin-bottom: 24px;
}

.section-index {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--accent);
}

.section-index::before {
  display: inline-block;
  width: 20px;
  height: 2px;
  margin-right: 8px;
  vertical-align: middle;
  background-color: var(--teal);
  content: "";
}

.section-head h2,
.section-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
}

.section-desc {
  max-width: 72ch;
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.section-title {
  margin-bottom: 10px;
}

/* 图片容器 */
figure img,
.hero-figure img,
.content-media img,
.org-figure img,
.page-title-media img,
.page-title-figure img,
.page-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--white);
}

.hero-figure img {
  aspect-ratio: 4 / 3;
}

.content-media img {
  aspect-ratio: 16 / 9;
}

.org-figure img {
  aspect-ratio: 4 / 3;
}

.page-title-media img,
.page-title-figure img {
  aspect-ratio: 4 / 3;
}

.page-figure img {
  aspect-ratio: 16 / 6;
}

figure figcaption {
  margin-top: 8px;
}


/* --------------------------------------------------------------------------
   3. components · 通用组件
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  font-size: 15px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.btn-primary {
  color: var(--white);
  background-color: var(--teal);
  border-color: var(--teal);
}

.btn-primary:hover {
  color: var(--white);
  background-color: #173d48;
  border-color: #173d48;
}

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

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

/* 筛选按钮 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  font-size: 14px;
  color: var(--muted);
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: color 160ms ease, border-color 160ms ease;
}

.filter-btn:hover {
  color: var(--teal);
  border-color: var(--teal);
}

.filter-btn.is-active,
.filter-btn[aria-pressed="true"] {
  color: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}

/* 结果说明行 */
.result-bar,
.filter-result {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--muted);
}

.result-count,
.filter-count {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
}

.count-value,
.count-num {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--accent);
}

.current-filter,
.count-cat {
  color: var(--muted);
}

.result-link,
.filter-note-link {
  font-size: 14px;
  color: var(--teal);
  border-bottom: 1px solid var(--line);
}

.result-link:hover,
.filter-note-link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* 通用条目行（首页表格式） */
.entry-list {
  display: flex;
  flex-direction: column;
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

.entry-row {
  display: grid;
  grid-template-columns: 88px minmax(150px, 1.4fr) minmax(90px, 0.8fr) minmax(150px, 1.6fr) minmax(130px, 1.2fr);
  align-items: center;
  gap: 12px;
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  background-color: var(--white);
  transition: border-color 160ms ease, background-color 160ms ease;
}

.entry-row:hover {
  background-color: #fbfaf7;
}

.entry-row:hover .entry-no,
.entry-row:hover .entry-code {
  color: var(--accent);
}

.entry-no,
.entry-code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--teal);
}

.entry-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.entry-line,
.entry-brand {
  font-size: 13px;
  color: var(--teal);
}

.entry-audience,
.entry-output {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

/* 相关入口条 */
.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 24px;
  font-size: 14px;
  background-color: var(--white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.related-links-label {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
}

.related-links-item {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  color: var(--teal);
}

.related-links-item::after {
  margin-left: 6px;
  content: "→";
}

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

/* 内页相关入口块 */
.related-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.related-list li {
  display: flex;
}

.related-list a {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 160ms ease;
}

.related-list a:hover {
  border-color: var(--teal);
}

.related-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.related-note,
.related-desc {
  font-size: 14px;
  color: var(--muted);
}

.related-arrow,
.arrow {
  margin-left: auto;
  font-family: var(--font-mono);
  color: var(--teal);
}

.related-link {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-link:hover {
  border-color: var(--teal);
}

.related-title,
.related-heading {
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
}

/* 表格通用 */
.field-table,
.module-table {
  width: 100%;
  font-size: 14px;
  background-color: var(--white);
  border: 1px solid var(--line);
}

.field-table th,
.field-table td,
.module-table th,
.module-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  line-height: 1.65;
}

.field-table thead th,
.module-table thead th {
  font-size: 13px;
  font-weight: 600;
  color: var(--teal);
  background-color: var(--paper);
  border-bottom: 1px solid var(--line);
}

.field-table tbody th,
.module-table tbody th {
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}

.field-table td,
.module-table td {
  color: var(--muted);
}


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

/* 首屏 */
.hero {
  padding: 40px 0 8px;
}

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

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

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--teal);
}

.hero-copy h1 {
  margin-top: 12px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.25;
  font-weight: 600;
  color: var(--ink);
}

.hero-lead {
  max-width: 46ch;
  margin-top: 16px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--muted);
}

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

.hero-points {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.hero-points li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--muted);
}

.hero-points li::before {
  position: absolute;
  top: 0.7em;
  left: 0;
  width: 6px;
  height: 6px;
  background-color: var(--teal);
  content: "";
}

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

.hero-figure {
  margin: 0;
}

.hero-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.hero-steps li {
  min-width: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

.hero-steps .step-num {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--accent);
}

.content-media {
  margin: 32px auto 0;
  width: 100%;
  max-width: var(--container);
  padding: 0 24px;
}

/* 四步路径 */
.service-path {
  padding: 56px 0;
  background-color: var(--white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.path-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 8px;
}

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

.path-num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--accent);
}

.path-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

.path-card p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 版图速览 */
.catalog-preview {
  padding: 56px 0;
}

.catalog-preview .filter-bar {
  margin-top: 4px;
}

/* 适用场景 */
.scenario {
  padding: 56px 0;
  background-color: var(--white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 8px;
}

.scenario-card {
  min-width: 0;
  padding: 20px 18px;
  background-color: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.scenario-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

.scenario-card p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.scenario-card .scenario-ref {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--teal);
}

/* 字段字典 */
.field-dictionary {
  padding: 56px 0;
}

.dictionary-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

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

.dictionary-aside {
  min-width: 0;
  padding: 20px 18px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.dictionary-aside h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}

.dictionary-aside > p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.source-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.source-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink);
}

.source-list li::before {
  position: absolute;
  top: 0.7em;
  left: 0;
  width: 6px;
  height: 6px;
  background-color: var(--accent);
  content: "";
}

.aside-note {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* 公开动态摘要 */
.updates-preview {
  padding: 56px 0;
  background-color: var(--white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.update-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.update-item {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.update-no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--teal);
}

.update-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.update-item p {
  grid-column: 2;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.section-more {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  margin-top: 16px;
  font-size: 14px;
  color: var(--teal);
  border-bottom: 1px solid var(--line);
}

.section-more:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* 合作前确认 */
.precheck {
  padding: 56px 0;
}

.precheck-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

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

.precheck-num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--accent);
}

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

.precheck-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.precheck-body p {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 入口条 */
.cta-bar {
  padding: 32px 0 48px;
}

.cta-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 24px;
  padding: 24px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.cta-copy {
  min-width: 0;
  flex: 1 1 320px;
}

.cta-copy h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
}

.cta-copy p {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}


/* --------------------------------------------------------------------------
   5. pages · 内页业务模块
   -------------------------------------------------------------------------- */

/* 集团概览 */
.org-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 32px;
  align-items: start;
}

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

.org-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  min-width: 0;
}

.org-item {
  min-width: 0;
  padding: 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.org-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.org-action {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.org-handoff {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

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

.principle-no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--accent);
}

.principle-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.principle-card p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.compliance-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.compliance-text {
  min-width: 0;
}

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

.compliance-text p + p {
  margin-top: 14px;
}

.compliance-side {
  min-width: 0;
  padding: 18px 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.compliance-side h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.boundary-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
}

.boundary-list li::before {
  position: absolute;
  top: 0.7em;
  left: 0;
  width: 6px;
  height: 6px;
  background-color: var(--accent);
  content: "";
}

/* 品牌目录 */
.page-title-split {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.9fr);
  gap: 32px;
  align-items: start;
}

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

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

.filter-intro {
  max-width: 72ch;
  margin-bottom: 14px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.filter-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.entry-list-section .entry-list {
  margin-top: 8px;
  border-top: 1px solid var(--line);
}

.entry-list-section .entry-row {
  grid-template-columns: 96px minmax(150px, 1.3fr) minmax(90px, 0.7fr) minmax(160px, 1.5fr) minmax(140px, 1.1fr);
  align-items: start;
}

.field-guide-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 8px;
}

.field-guide-item {
  min-width: 0;
  padding: 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.field-guide-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.field-guide-item p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.field-guide-note {
  margin-top: 16px;
  font-size: 14px;
  color: var(--muted);
}

.field-guide-note a {
  color: var(--teal);
  border-bottom: 1px solid var(--line);
}

.field-guide-note a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* 业务版图 */
.page-title-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.9fr);
  gap: 32px;
  align-items: start;
}

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

.module-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--white);
}

.module-table {
  min-width: 640px;
  border: 0;
}

.module-table thead th {
  white-space: nowrap;
}

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

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

.combo-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.combo-modules {
  margin-top: 8px;
  font-size: 13px;
  color: var(--teal);
}

.combo-body {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.combo-output {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink);
}

.delivery-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.delivery-steps {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.delivery-step {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.delivery-step .step-num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--accent);
}

.delivery-step .step-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.delivery-step .step-body {
  grid-column: 2;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.delivery-accept {
  min-width: 0;
  padding: 18px 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.delivery-accept h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.accept-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.accept-list li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.accept-list strong {
  display: block;
  font-weight: 600;
  color: var(--ink);
}

/* 公开动态 */
.archive-note-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.archive-note-item {
  min-width: 0;
  padding: 18px 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.archive-note-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.archive-note-item p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.update-group {
  margin-top: 24px;
}

.update-group-title {
  padding-bottom: 10px;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

.update-items {
  display: flex;
  flex-direction: column;
}

.update-items .update-item {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.update-items .update-no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--teal);
}

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

.update-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.update-body p {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.method-summary > p {
  max-width: 72ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.method-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.method-points li {
  min-width: 0;
  padding: 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.method-link-line {
  margin-top: 16px;
  font-size: 14px;
}

.method-link-line a {
  color: var(--teal);
  border-bottom: 1px solid var(--line);
}

.method-link-line a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.citation-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.citation-rules,
.citation-example {
  min-width: 0;
  padding: 18px 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.citation-rules h3,
.citation-example h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.citation-rule-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.citation-rule-list li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.citation-rule-list .mono {
  margin-right: 8px;
  color: var(--teal);
}

.citation-example p {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.citation-example .mono {
  color: var(--teal);
}

/* 联系渠道 */
.page-shell {
  display: block;
}

.page-figure {
  margin-top: 20px;
}

.process-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.process-step {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.step-no {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--accent);
}

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

.step-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.step-body p {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.step-output {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  color: var(--teal);
}

.checklist-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.checklist-item {
  min-width: 0;
  padding: 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.checklist-no {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--accent);
}

.checklist-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.checklist-item p {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.faq-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

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

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 52px;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 400;
  color: var(--teal);
  content: "+";
}

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

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

.faq-item p {
  padding: 0 16px 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* 404 */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 64px 24px 80px;
}

.error-block {
  width: 100%;
  max-width: 640px;
  padding: 32px 24px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.error-code {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--accent);
}

.error-block h1 {
  margin-top: 10px;
  font-size: clamp(24px, 3.4vw, 32px);
  line-height: 1.3;
  font-weight: 600;
  color: var(--ink);
}

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

.error-entry-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.error-entry-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 15px;
  color: var(--teal);
}

.error-entry-list a::after {
  margin-left: 8px;
  font-family: var(--font-mono);
  content: "→";
}

.error-entry-list a:hover {
  color: var(--accent);
}

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

.error-note {
  margin-top: 20px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}


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

/* 1024px 以下 */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 28px;
  }

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

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

  .dictionary-grid,
  .compliance-grid,
  .delivery-grid,
  .citation-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

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

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

  .page-title-split,
  .page-title-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.9fr);
    gap: 24px;
  }

  .entry-list-section .entry-row,
  .entry-row {
    grid-template-columns: 76px minmax(140px, 1.3fr) minmax(80px, 0.7fr) minmax(140px, 1.4fr) minmax(120px, 1fr);
    gap: 10px;
  }
}

/* 768px 以下 */
@media (max-width: 768px) {
  .header-inner {
    gap: 12px;
    min-height: 60px;
    padding: 0 16px;
  }

  .site-nav {
    display: none;
  }

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

  .tool-entry {
    min-height: 40px;
    padding: 0 12px;
    font-size: 13px;
  }

  .container,
  .inner-main,
  .related-links,
  .footer-inner {
    padding-left: 16px;
    padding-right: 16px;
  }

  .content-media {
    padding: 0 16px;
  }

  .hero {
    padding-top: 28px;
  }

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

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

  .hero-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .content-media {
    margin-top: 24px;
  }

  .service-path,
  .catalog-preview,
  .scenario,
  .field-dictionary,
  .updates-preview,
  .precheck {
    padding: 40px 0;
  }

  .path-grid,
  .scenario-grid,
  .combo-grid,
  .archive-note-grid,
  .method-points {
    grid-template-columns: minmax(0, 1fr);
  }

  .principles-grid,
  .checklist-grid,
  .field-guide-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .org-grid,
  .page-title-split,
  .page-title-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

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

  /* 条目行转卡片 */
  .entry-row,
  .entry-list-section .entry-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    margin-bottom: 12px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
  }

  .entry-list {
    border-top: 0;
  }

  .entry-row .entry-no,
  .entry-row .entry-code {
    font-size: 12px;
  }

  .entry-row .entry-name {
    font-size: 16px;
  }

  .entry-row .entry-audience::before,
  .entry-row .entry-output::before {
    display: block;
    font-size: 12px;
    color: var(--teal);
  }

  .entry-row .entry-audience::before {
    content: "适用对象";
  }

  .entry-row .entry-output::before {
    content: "交付物";
    margin-top: 6px;
  }

  .entry-row .entry-line::before,
  .entry-row .entry-brand::before {
    content: "品牌线 · ";
    color: var(--muted);
  }

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

  .update-item p,
  .update-items .update-item p {
    grid-column: 1;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
  }

  .module-table {
    min-width: 560px;
  }

  .delivery-step,
  .process-step,
  .precheck-item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 4px 12px;
  }

  .delivery-step .step-body {
    grid-column: 2;
  }

  .inner-main section {
    margin-top: 40px;
  }

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

  .footer-inner {
    flex-wrap: wrap;
    gap: 10px 16px;
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .footer-brand {
    flex: 1 1 100%;
  }

  .footer-nav {
    flex: 1 1 100%;
    gap: 4px 14px;
  }

  .footer-copy {
    flex: 1 1 100%;
  }

  .related-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .related-links-item {
    min-height: 44px;
  }

  .error-main {
    padding: 40px 16px 56px;
  }

  .error-block {
    padding: 24px 18px;
  }
}

/* 480px 以下 */
@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  .brand-mark {
    font-size: 16px;
  }

  .tool-entry {
    padding: 0 10px;
  }

  .hero-copy h1 {
    font-size: clamp(26px, 7.6vw, 32px);
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

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

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

  .filter-controls,
  .filter-bar {
    gap: 8px;
  }

  .filter-btn {
    min-height: 44px;
    padding: 0 12px;
    font-size: 13px;
  }

  .result-bar,
  .filter-result {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-title {
    font-size: clamp(24px, 7vw, 28px);
  }

  .section-head h2,
  .section-title,
  .related-title,
  .related-heading {
    font-size: 20px;
  }

  .field-table th,
  .field-table td {
    padding: 10px 10px;
    font-size: 13px;
  }

  .field-table tbody th {
    white-space: normal;
  }

  .module-table th,
  .module-table td {
    padding: 10px;
    font-size: 13px;
  }

  .faq-item summary {
    padding: 12px;
    font-size: 14px;
  }

  .faq-item p {
    padding: 0 12px 14px;
  }

  .related-list a,
  .related-link {
    padding: 12px;
  }

  .related-arrow,
  .arrow {
    margin-left: 0;
  }

  .error-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .error-actions .btn {
    width: 100%;
  }

  .cta-inner .btn {
    width: 100%;
  }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}