:root {
  --bg: #F7F3EC;
  --ink: #241F1A;
  --ink-soft: #6B5F52;
  --accent: #C2410C;
  --accent-soft: #F2E2D8;
  --green: #1F6F5C;
  --blue: #2F4A9A;
  --amber: #C08A00;
  --violet: #6D4C9F;
  --warn: #8A3B2E;
  --line: #DED5C8;
  --surface: #FFFDF9;
  --surface-2: #F1EAE0;
  --radius: 6px;
  --radius-sm: 4px;
  --shell: 1080px;
  --text-max: 760px;
  --gap: 28px;
  --shadow: 0 1px 2px rgba(36, 31, 26, .05);
  --font-sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
}

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

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
}

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

figure {
  margin: 0;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.35;
}

h2 {
  font-size: 26px;
}

h3 {
  font-size: 19px;
}

p {
  margin: 0 0 14px;
}

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

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

button {
  font: inherit;
  color: inherit;
}

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

/* ---------- 通用标签 ---------- */

.tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: 0;
  white-space: nowrap;
}

.tag-green {
  background: rgba(31, 111, 92, .12);
  color: var(--green);
}

.tag-blue {
  background: rgba(47, 74, 154, .12);
  color: var(--blue);
}

.tag-amber {
  background: rgba(192, 138, 0, .14);
  color: #8A6400;
}

.tag-violet {
  background: rgba(109, 76, 159, .12);
  color: var(--violet);
}

.tag-indigo {
  background: rgba(47, 74, 154, .14);
  color: #263C7D;
}

.tag-gold {
  background: rgba(192, 138, 0, .12);
  color: #8A6400;
}

/* ---------- 通用按钮与链接 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  text-align: center;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease;
}

.btn:hover,
.btn:focus-visible {
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #FFF7F2;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #A5350A;
  border-color: #A5350A;
  color: #FFFFFF;
}

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

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}

.link-more {
  display: inline-block;
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
}

.link-more::after {
  content: " →";
  font-weight: 700;
}

.link-more:hover,
.link-more:focus-visible {
  color: #8F2E08;
}

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

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-header {
  position: relative;
  z-index: 20;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

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

.brand {
  flex: 0 0 auto;
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0;
}

.brand:hover,
.brand:focus-visible {
  color: var(--accent);
  text-decoration: none;
}

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

.site-nav > ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px;
}

.site-nav a {
  display: inline-block;
  padding: 9px 11px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--ink);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: var(--surface-2);
  color: var(--accent);
  text-decoration: none;
}

.site-nav a.is-current {
  color: var(--accent);
  font-weight: 700;
  box-shadow: inset 0 -2px 0 var(--accent);
}

.header-cta {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 16px;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
}

.header-cta:hover,
.header-cta:focus-visible {
  background: var(--accent);
  color: #FFF7F2;
  text-decoration: none;
}

.nav-toggle {
  display: none;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

.nav-toggle:hover {
  border-color: var(--accent);
}

.mobile-nav {
  border-top: 1px solid var(--line);
  background: var(--surface);
}

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

.mobile-nav ul {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 8px 20px 14px;
}

.mobile-nav a {
  display: block;
  min-height: 44px;
  padding: 11px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  color: var(--ink);
}

.mobile-nav li:last-child a {
  border-bottom: 0;
}

.mobile-nav a.is-current {
  color: var(--accent);
  font-weight: 700;
}

.site-main {
  flex: 1 1 auto;
  width: 100%;
}

.home-main > section,
.inner-main > section,
.inner-main > div {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 20px;
}

.home-main > section {
  padding-top: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

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

.inner-main > section,
.inner-main > div {
  padding-top: 32px;
  padding-bottom: 32px;
}

.inner-main > section:first-of-type,
.inner-main > div:first-of-type {
  padding-top: 0;
}

/* ---------- 面包屑 ---------- */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 16px;
  padding-bottom: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

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

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

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

.breadcrumb-current {
  color: var(--ink);
  font-weight: 700;
}

/* ---------- 页面标题区 ---------- */

.page-header {
  padding-top: 32px;
  padding-bottom: 0;
}

.page-title {
  max-width: var(--text-max);
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 700;
  line-height: 1.25;
}

.inner-main > .page-title {
  display: block;
  padding-top: 28px;
  padding-bottom: 0;
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 700;
  line-height: 1.25;
}

.page-kicker,
.eyebrow {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.page-lead {
  max-width: var(--text-max);
  margin: 0;
  font-size: 17px;
  color: var(--ink-soft);
}

.inner-main > .page-title:last-child {
  padding-bottom: 28px;
}

/* ---------- 通用分栏容器 ---------- */

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
}

.page-layout.layout-split {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.page-layout.layout-shell {
  grid-template-columns: minmax(0, 1fr) 280px;
  align-items: start;
}

.page-layout.sidebar-left {
  grid-template-columns: 260px minmax(0, 1fr);
  align-items: start;
}

.sidebar-left .page-layout {
  grid-template-columns: 260px minmax(0, 1fr);
  align-items: start;
}

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

/* ---------- 通用 section 头 ---------- */

.section-head {
  margin-bottom: 22px;
}

.section-head h2 {
  margin-bottom: 8px;
}

.section-head p {
  max-width: var(--text-max);
  color: var(--ink-soft);
}

.section-intro {
  max-width: var(--text-max);
  margin-bottom: 20px;
  color: var(--ink-soft);
}

/* ---------- 图片容器 ---------- */

.content-media,
.hero-figure,
.section-media,
.aside-media,
.obs-media,
.spec-media,
.case-figure,
.agenda-media {
  overflow: hidden;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.content-media img,
.hero-figure img,
.section-media img,
.aside-media img,
.obs-media img,
.spec-media img,
.case-figure img,
.agenda-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

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

.aside-media img {
  aspect-ratio: 4 / 3;
}

figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.content-media-primary {
  max-width: calc(var(--shell) - 40px);
  margin: 26px auto 0;
}

/* ---------- 相关链接条 ---------- */

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 22px 20px;
}

.related-links-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-soft);
}

.related-links-item {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 15px;
  color: var(--ink);
}

.related-links-item:hover,
.related-links-item:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

/* ============================================================
   components —— 页脚
   ============================================================ */

.site-footer {
  margin-top: 20px;
  background: #221D18;
  color: #E7DFD4;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(4, minmax(0, 1fr));
  gap: 26px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px 20px 26px;
}

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

.footer-logo {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 700;
  color: #FFFFFF;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: #B9AC9C;
}

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

.footer-col h2 {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 700;
  color: #FFFFFF;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col a {
  display: inline-block;
  min-height: 22px;
  font-size: 14px;
  color: #C6B9A9;
}

.footer-col a:hover,
.footer-col a:focus-visible {
  color: #FFFFFF;
}

.footer-copy {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 14px 20px 26px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: 13px;
  color: #9C8F80;
}

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

/* ---------- 编辑部式头条区 ---------- */

.hero-editorial {
  padding-top: 40px;
  padding-bottom: 40px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: var(--gap);
  align-items: start;
}

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

.hero-kicker {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.hero-lead h1 {
  margin-bottom: 14px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.22;
}

.hero-desc {
  max-width: 620px;
  margin-bottom: 20px;
  font-size: 17px;
  color: var(--ink-soft);
}

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

.hero-side {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.hero-side-card {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-side-title {
  margin: 10px 0 8px;
  font-size: 20px;
}

.hero-side-card p {
  margin-bottom: 12px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---------- 创作任务面板 ---------- */

.task-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.task-item {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 20px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 3px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color .18s ease;
}

.task-item h3 {
  margin: 10px 0 6px;
  font-size: 19px;
}

.task-for {
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--ink-soft);
}

.task-deliver {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
  padding-left: 18px;
  list-style: disc;
  font-size: 15px;
  color: var(--ink-soft);
}

.task-item .link-more {
  margin-top: auto;
}

.task-green {
  border-top-color: var(--green);
}

.task-green:hover {
  border-color: var(--green);
}

.task-blue {
  border-top-color: var(--blue);
}

.task-blue:hover {
  border-color: var(--blue);
}

.task-violet {
  border-top-color: var(--violet);
}

.task-violet:hover {
  border-color: var(--violet);
}

.task-amber {
  border-top-color: var(--amber);
}

.task-amber:hover {
  border-color: var(--amber);
}

/* ---------- 案例拆解精选 ---------- */

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

.case-row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: start;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line);
}

.case-row:hover {
  background: var(--surface);
}

.case-type {
  justify-self: start;
  margin-top: 2px;
}

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

.case-body h3 {
  margin-bottom: 6px;
  font-size: 18px;
}

.case-body p {
  margin: 0;
  font-size: 15px;
  color: var(--ink-soft);
}

.case-row .link-more {
  align-self: center;
  white-space: nowrap;
}

/* ---------- 趋势观察摘要 ---------- */

.trend-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.trend-item {
  min-width: 0;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--green);
  border-radius: var(--radius);
}

.trend-item h3 {
  margin-bottom: 8px;
  font-size: 19px;
}

.trend-item p {
  margin-bottom: 12px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---------- 需求访谈清单 ---------- */

.brief-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.brief-item {
  min-width: 0;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.brief-item summary {
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  list-style: none;
}

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

.brief-item summary::after {
  content: "＋";
  float: right;
  color: var(--accent);
  font-weight: 700;
}

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

.brief-item summary:hover {
  color: var(--accent);
}

.brief-item p {
  margin: 10px 0 0;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---------- 资料中心入口 ---------- */

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.resource-item {
  min-width: 0;
  padding: 20px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.resource-item h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.resource-item p {
  margin-bottom: 12px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---------- 合作边界与洽谈入口 ---------- */

.boundary-cta {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: var(--gap);
  align-items: start;
}

.boundary-list {
  min-width: 0;
}

.boundary-list > h2 {
  margin-bottom: 16px;
}

.boundary-col {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.boundary-col + .boundary-col {
  margin-top: 14px;
}

.boundary-col h3 {
  margin-bottom: 10px;
  font-size: 17px;
}

.boundary-col ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 18px;
  list-style: disc;
  font-size: 15px;
  color: var(--ink-soft);
}

.boundary-yes {
  background: rgba(31, 111, 92, .06);
  border-color: rgba(31, 111, 92, .3);
}

.boundary-yes h3 {
  color: var(--green);
}

.boundary-no {
  background: rgba(138, 59, 46, .06);
  border-color: rgba(138, 59, 46, .3);
}

.boundary-no h3 {
  color: var(--warn);
}

.cta-box {
  min-width: 0;
  padding: 22px 20px;
  background: var(--surface);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
}

.cta-box h3 {
  margin-bottom: 10px;
  font-size: 19px;
}

.cta-box p {
  margin-bottom: 18px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ============================================================
   pages —— 内页通用模块
   ============================================================ */

.section {
  min-width: 0;
}

.section h2 {
  margin-bottom: 14px;
}

.section-media {
  margin: 0;
}

/* ---------- 工作室：定位与分工 ---------- */

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

.positioning-text p {
  color: var(--ink-soft);
}

.division-list {
  min-width: 0;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.division-list h3 {
  margin-bottom: 12px;
  font-size: 18px;
}

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

.division-list li {
  min-width: 0;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}

.division-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.division-list li p {
  margin: 6px 0 0;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---------- 工作室：评审节点 ---------- */

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

.workflow-list li {
  min-width: 0;
  padding: 18px 20px 18px 52px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  counter-increment: workflow;
  position: relative;
}

.workflow-list li::before {
  content: counter(workflow, decimal-leading-zero);
  position: absolute;
  top: 18px;
  left: 18px;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
}

.workflow-list h3 {
  margin-bottom: 6px;
  font-size: 18px;
}

.workflow-list p {
  margin: 0;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---------- 工作室：适合与不适合 ---------- */

.fit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.fit-yes,
.fit-no {
  min-width: 0;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.fit-yes {
  background: rgba(31, 111, 92, .06);
  border-color: rgba(31, 111, 92, .3);
}

.fit-no {
  background: rgba(138, 59, 46, .06);
  border-color: rgba(138, 59, 46, .3);
}

.fit-yes h3,
.fit-no h3 {
  margin-bottom: 10px;
  font-size: 18px;
}

.fit-yes h3 {
  color: var(--green);
}

.fit-no h3 {
  color: var(--warn);
}

.fit-yes ul,
.fit-no ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 18px;
  list-style: disc;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---------- 关联内容（网格卡片） ---------- */

.module-related {
  min-width: 0;
}

.module-related > h2 {
  margin-bottom: 14px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

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

.related-item h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.related-item h3 a {
  color: var(--ink);
}

.related-item h3 a:hover,
.related-item h3 a:focus-visible {
  color: var(--accent);
}

.related-item p {
  margin: 0;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---------- 关联内容（列表） ---------- */

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

.related-list li {
  min-width: 0;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-list a {
  display: inline-block;
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

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

.related-list p {
  margin: 0;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ============================================================
   pages —— 案例拆解
   ============================================================ */

.object-tabs {
  padding-top: 0;
}

.object-tabs ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.object-tabs a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.object-tabs a:hover,
.object-tabs a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.aside-dimension-index {
  min-width: 0;
  padding: 18px 18px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-title {
  margin-bottom: 12px;
  font-size: 17px;
}

.aside-dimension-index ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.aside-dimension-index a {
  display: block;
  min-height: 40px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--ink);
}

.aside-dimension-index a:hover,
.aside-dimension-index a:focus-visible {
  background: var(--surface-2);
  color: var(--accent);
  text-decoration: none;
}

.aside-note {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  color: var(--ink-soft);
}

.main-case-list {
  min-width: 0;
}

.dimension-key {
  margin-bottom: 24px;
  padding: 18px 20px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.dimension-key h2 {
  margin-bottom: 12px;
  font-size: 18px;
}

.dimension-list {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 8px 16px;
  margin: 0;
  font-size: 15px;
}

.dimension-list dt {
  font-weight: 700;
  color: var(--accent);
}

.dimension-list dd {
  margin: 0;
  color: var(--ink-soft);
}

.case-group {
  margin-bottom: 30px;
  scroll-margin-top: 80px;
}

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

.case-group-title {
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--ink);
  font-size: 22px;
}

.case-figure {
  margin-bottom: 18px;
}

.case-item {
  min-width: 0;
  margin-bottom: 16px;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  border-radius: var(--radius);
}

.case-item:last-child {
  margin-bottom: 0;
}

.case-tag {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--blue);
}

.case-item h3 {
  margin-bottom: 12px;
  font-size: 18px;
}

.case-dims {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 8px 14px;
  margin: 0 0 12px;
  font-size: 15px;
}

.case-dims dt {
  font-weight: 700;
  color: var(--ink);
}

.case-dims dd {
  margin: 0;
  color: var(--ink-soft);
}

.case-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 0;
  font-size: 15px;
}

.case-links a {
  font-weight: 700;
  color: var(--accent);
}

.case-links a:hover,
.case-links a:focus-visible {
  color: #8F2E08;
}

/* ============================================================
   pages —— 趋势观察
   ============================================================ */

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

.main-observations > h2 {
  margin-bottom: 18px;
}

.obs-item {
  min-width: 0;
  margin-bottom: 22px;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 3px solid var(--green);
  border-radius: var(--radius);
}

.obs-item:last-child {
  margin-bottom: 0;
}

.obs-item h3 {
  margin: 10px 0 12px;
  font-size: 20px;
}

.obs-item p {
  color: var(--ink-soft);
}

.obs-media {
  margin: 0 0 14px;
}

.aside-method {
  min-width: 0;
  padding: 18px 20px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-method > h2 {
  margin-bottom: 14px;
  font-size: 18px;
}

.aside-method ul {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.aside-method li {
  min-width: 0;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.aside-method li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.aside-method h3 {
  margin-bottom: 6px;
  font-size: 16px;
}

.aside-method p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.obs-apply {
  min-width: 0;
}

.obs-apply > h2 {
  margin-bottom: 10px;
}

.obs-apply > p {
  max-width: var(--text-max);
  margin-bottom: 18px;
  color: var(--ink-soft);
}

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

.apply-steps li {
  min-width: 0;
  padding: 18px 20px 18px 52px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  counter-increment: apply;
  position: relative;
}

.apply-steps li::before {
  content: counter(apply, decimal-leading-zero);
  position: absolute;
  top: 18px;
  left: 18px;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
}

.apply-steps h3 {
  margin-bottom: 6px;
  font-size: 18px;
}

.apply-steps p {
  margin: 0;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ============================================================
   pages —— 需求访谈
   ============================================================ */

.aside-question-categories {
  min-width: 0;
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-question-categories > h2 {
  margin-bottom: 12px;
  font-size: 17px;
}

.aside-question-categories ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.aside-question-categories a {
  display: block;
  min-height: 44px;
  padding: 10px 10px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--ink);
}

.aside-question-categories a:hover,
.aside-question-categories a:focus-visible {
  background: var(--surface-2);
  color: var(--accent);
  text-decoration: none;
}

.aside-question-categories .aside-media {
  margin: 0;
}

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

.qa-group {
  margin-bottom: 28px;
  scroll-margin-top: 80px;
}

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

.qa-group-head {
  margin-bottom: 14px;
}

.qa-group-head h2 {
  margin: 8px 0 6px;
  font-size: 22px;
}

.qa-group-head p {
  margin: 0;
  font-size: 15px;
  color: var(--ink-soft);
}

.qa-item {
  margin-bottom: 12px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.qa-item:last-child {
  margin-bottom: 0;
}

.qa-item summary {
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  list-style: none;
}

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

.qa-item summary::after {
  content: "展开答案";
  float: right;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.qa-item[open] summary::after {
  content: "收起";
}

.qa-item summary:hover {
  color: var(--accent);
}

.qa-item p {
  margin: 10px 0 0;
  font-size: 15px;
  color: var(--ink-soft);
}

.module-troubleshooting {
  min-width: 0;
}

.module-troubleshooting > h2 {
  margin-bottom: 10px;
}

.module-troubleshooting > p {
  max-width: var(--text-max);
  margin-bottom: 18px;
  color: var(--ink-soft);
}

.troubleshooting-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  counter-reset: trouble;
}

.troubleshooting-list li {
  min-width: 0;
  padding: 18px 20px 18px 52px;
  background: rgba(138, 59, 46, .05);
  border: 1px solid rgba(138, 59, 46, .25);
  border-radius: var(--radius);
  counter-increment: trouble;
  position: relative;
}

.troubleshooting-list li::before {
  content: counter(trouble, decimal-leading-zero);
  position: absolute;
  top: 18px;
  left: 18px;
  font-size: 14px;
  font-weight: 700;
  color: var(--warn);
}

.troubleshooting-list h3 {
  margin-bottom: 6px;
  font-size: 17px;
  color: var(--warn);
}

.troubleshooting-list p {
  margin: 0;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ============================================================
   pages —— 资料中心
   ============================================================ */

.main-spec,
.main-file-format,
.main-checklist,
.module-faq-categories {
  min-width: 0;
}

.main-spec > h2,
.main-file-format > h2,
.main-checklist > h2,
.module-faq-categories > h2 {
  margin-bottom: 10px;
}

.main-spec > p,
.main-file-format > p,
.main-checklist > p,
.module-faq-categories > p {
  max-width: var(--text-max);
  margin-bottom: 18px;
  color: var(--ink-soft);
}

.spec-media {
  margin-bottom: 20px;
}

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

.spec-col {
  min-width: 0;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.spec-col h3 {
  margin-bottom: 10px;
  font-size: 17px;
  color: var(--accent);
}

.spec-col ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 18px;
  list-style: disc;
  font-size: 15px;
  color: var(--ink-soft);
}

.format-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.format-list,
.handover-list {
  min-width: 0;
  padding: 18px 20px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.format-list h3,
.handover-list h3 {
  margin-bottom: 10px;
  font-size: 17px;
}

.format-list ul,
.handover-list ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 18px;
  list-style: disc;
  font-size: 15px;
  color: var(--ink-soft);
}

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

.checklist-table caption {
  padding-bottom: 10px;
  text-align: left;
  font-size: 14px;
  color: var(--ink-soft);
}

.checklist-table th,
.checklist-table td {
  padding: 11px 14px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.checklist-table thead th {
  background: var(--surface-2);
  font-weight: 700;
  color: var(--ink);
}

.checklist-table tbody tr:nth-child(even) {
  background: rgba(255, 253, 249, .7);
}

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

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

.faq-category-item h3 {
  margin-bottom: 8px;
  font-size: 17px;
}

.faq-category-item p {
  margin-bottom: 12px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ============================================================
   pages —— 合作洽谈
   ============================================================ */

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

.main-agenda > h2 {
  margin-bottom: 10px;
}

.agenda-item {
  min-width: 0;
  margin-bottom: 16px;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.agenda-step {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.agenda-item h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.agenda-item p {
  color: var(--ink-soft);
}

.agenda-points {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 18px;
  list-style: disc;
  font-size: 15px;
  color: var(--ink-soft);
}

.agenda-media {
  margin: 0;
}

.aside-prepare {
  min-width: 0;
  padding: 18px 20px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-prepare > h2 {
  margin-bottom: 8px;
  font-size: 18px;
}

.aside-intro {
  margin-bottom: 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

.prepare-item {
  min-width: 0;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.prepare-item:last-of-type {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.prepare-item h3 {
  margin-bottom: 6px;
  font-size: 16px;
}

.prepare-item p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.aside-link {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 15px;
}

.aside-link a {
  font-weight: 700;
  color: var(--accent);
}

.module-boundaries {
  min-width: 0;
}

.module-boundaries > h2 {
  margin-bottom: 10px;
}

.boundary-note {
  max-width: var(--text-max);
  margin-bottom: 16px;
  color: var(--ink-soft);
}

.module-boundaries .boundary-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 20px;
  background: rgba(138, 59, 46, .05);
  border: 1px solid rgba(138, 59, 46, .25);
  border-radius: var(--radius);
}

.module-boundaries .boundary-list li {
  padding-left: 20px;
  position: relative;
  font-size: 15px;
  color: var(--ink-soft);
}

.module-boundaries .boundary-list li::before {
  content: "·";
  position: absolute;
  left: 6px;
  font-weight: 700;
  color: var(--warn);
}

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

.error-main {
  display: block;
}

.error-panel {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 60px 20px 30px;
}

.error-code {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
}

.error-panel h1 {
  margin-bottom: 12px;
  font-size: clamp(28px, 3.6vw, 40px);
}

.error-panel > p {
  max-width: var(--text-max);
  margin-bottom: 22px;
  color: var(--ink-soft);
}

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

.error-home,
.error-contact {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border: 1px solid var(--ink);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.error-home {
  background: var(--accent);
  border-color: var(--accent);
  color: #FFF7F2;
}

.error-home:hover,
.error-home:focus-visible {
  background: #A5350A;
  border-color: #A5350A;
  color: #FFFFFF;
  text-decoration: none;
}

.error-contact:hover,
.error-contact:focus-visible {
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
}

.error-guide {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 20px 50px;
}

.error-guide h2 {
  margin-bottom: 14px;
  font-size: 20px;
}

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

.error-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--ink);
}

.error-links a:hover,
.error-links a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

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

@media (max-width: 900px) {
  .site-nav {
    display: none;
  }

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

  .header-cta {
    margin-left: 0;
  }

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

  .hero-side {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .hero-side-card {
    flex: 1 1 260px;
  }

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

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

  .page-layout.layout-split,
  .page-layout.layout-shell,
  .page-layout.sidebar-left,
  .sidebar-left .page-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .aside-dimension-index ul,
  .aside-question-categories ul {
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 6px;
  }

  .aside-dimension-index a,
  .aside-question-categories a {
    white-space: nowrap;
  }

  .aside-question-categories ul {
    margin-bottom: 12px;
  }

  .aside-media {
    max-width: 420px;
  }

  .related-grid,
  .related-list,
  .resource-grid,
  .spec-grid,
  .apply-steps,
  .troubleshooting-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (max-width: 640px) {
  .home-main > section {
    padding-top: 30px;
    padding-bottom: 30px;
  }

  .inner-main > section,
  .inner-main > div {
    padding-top: 26px;
    padding-bottom: 26px;
  }

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

  .brand {
    font-size: 18px;
  }

  .header-cta {
    min-height: 38px;
    padding: 7px 12px;
    font-size: 14px;
  }

  .home-main > section,
  .inner-main > section,
  .inner-main > div,
  .related-links,
  .footer-inner,
  .footer-copy,
  .error-panel,
  .error-guide {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-title,
  .inner-main > .page-title {
    font-size: 28px;
  }

  h2 {
    font-size: 22px;
  }

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

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

  .task-grid,
  .trend-grid,
  .brief-list,
  .resource-grid,
  .related-grid,
  .related-list,
  .workflow-list,
  .fit-grid,
  .spec-grid,
  .format-layout,
  .faq-category-grid,
  .apply-steps,
  .troubleshooting-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .case-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .case-row .link-more {
    align-self: flex-start;
  }

  .dimension-list,
  .case-dims {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .case-dims dt {
    margin-top: 6px;
  }

  .checklist-table,
  .checklist-table thead,
  .checklist-table tbody,
  .checklist-table tr,
  .checklist-table th,
  .checklist-table td {
    display: block;
  }

  .checklist-table thead {
    display: none;
  }

  .checklist-table tr {
    margin-bottom: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
  }

  .checklist-table td {
    border: 0;
    border-bottom: 1px solid var(--line);
  }

  .checklist-table td:last-child {
    border-bottom: 0;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    padding-top: 32px;
  }

  .error-panel {
    padding-top: 40px;
  }
}

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