/* ============================================================
   今日吃瓜必吃大瓜 · 整站样式表
   fuzhoufix.com
   工艺品牌风 · 暖纸色基底 · 陶土红/深青编号系统
   ============================================================ */

/* ============================================================
   01 · Base
   ============================================================ */

:root {
  --paper: #F5F1E8;
  --clay: #8C4A2F;
  --teal: #3E5C58;
  --bronze: #C99700;
  --ink: #2B2B2B;
  --line: #E0D6C0;
  --white: #FFFFFF;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --container: 1240px;
  --radius: 8px;
  --shadow: 0 2px 12px rgba(43, 43, 43, 0.08);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  background-color: var(--paper);
}

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

a {
  color: var(--teal);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
}

p {
  margin-bottom: 1em;
}

/* ============================================================
   02 · Layout 骨架
   ============================================================ */

.site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--clay);
}

.brand-tagline {
  font-size: 11px;
  color: var(--teal);
  letter-spacing: 0.05em;
}

.primary-nav .nav-list {
  display: flex;
  gap: 28px;
}

.nav-link {
  font-size: 14px;
  color: var(--ink);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.nav-link:hover {
  color: var(--clay);
  border-bottom-color: var(--bronze);
}

.nav-link.is-current {
  color: var(--white);
  background: var(--teal);
  padding: 6px 14px;
  border-radius: 4px;
  border-bottom: none;
}

.nav-cta {
  display: inline-block;
}

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

/* 内页统一主容器 */
.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   03 · 页头 / 面包屑 / 页脚
   ============================================================ */

.breadcrumb {
  font-size: 13px;
  color: var(--teal);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
}

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

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

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

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

.breadcrumb-wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 24px 0;
}

.breadcrumb-list {
  display: flex;
  gap: 8px;
  font-size: 13px;
}

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

/* 页脚 */
.site-footer {
  background: #2B2B2B;
  color: #D8D0C0;
  margin-top: 64px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
  display: block;
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 13px;
  color: #B8B0A0;
  line-height: 1.6;
}

.footer-title {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--paper);
  margin-bottom: 16px;
  font-weight: 600;
}

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

.footer-link {
  color: #B8B0A0;
  font-size: 14px;
}

.footer-link:hover {
  color: var(--bronze);
}

.footer-text {
  font-size: 14px;
  color: #B8B0A0;
  line-height: 1.6;
}

.highlight-link {
  color: var(--bronze);
  font-weight: 600;
}

.copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 16px 24px;
  text-align: center;
  font-size: 13px;
  color: #8A8272;
}

/* ============================================================
   04 · 首页 Hero
   ============================================================ */

.hero-section {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.hero-layout {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-text h1 {
  font-size: 32px;
  color: var(--clay);
  margin-bottom: 16px;
  line-height: 1.3;
}

.hero-lead {
  font-size: 16px;
  color: var(--ink);
  margin-bottom: 32px;
}

.hero-questions {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.question-card {
  background: var(--white);
  border-left: 4px solid var(--bronze);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: var(--shadow);
}

.question-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.question-desc {
  font-size: 14px;
  color: #666;
  margin-bottom: 8px;
}

.text-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--teal);
  display: inline-block;
}

.text-link:hover {
  color: var(--clay);
}

.hero-media {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero-media img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

/* ============================================================
   05 · 首页三栏门户
   ============================================================ */

.homepage-portal {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 220px 1fr 220px;
  gap: 32px;
  align-items: start;
}

.portal-sidebar {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.sidebar-inner {
  position: sticky;
  top: 96px;
}

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--line);
}

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

.index-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
  color: var(--ink);
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
}

.index-link:hover {
  color: var(--clay);
}

.index-num {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--bronze);
  font-weight: 700;
}

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

.module-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 24px;
}

.numbered-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.title-num {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--clay);
  font-weight: 700;
}

/* 服务列表 */
.service-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.service-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
  border-left: 3px solid var(--teal);
}

.service-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 8px;
}

.service-summary {
  font-size: 14px;
  color: #555;
  margin-bottom: 10px;
}

/* 研究方法 */
.method-section {
  margin-top: 40px;
}

.method-content {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.method-figure {
  margin-top: 20px;
  border-radius: var(--radius);
  overflow: hidden;
}

.method-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

/* 合作流程预览 */
.process-preview {
  margin-top: 40px;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.step-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  text-align: center;
  position: relative;
}

.step-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--bronze);
  margin-bottom: 8px;
}

.step-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 6px;
}

.step-desc {
  font-size: 13px;
  color: #666;
  line-height: 1.5;
  margin-bottom: 0;
}

/* 右侧资料栏 */
.latest-publications {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pub-item {
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}

.pub-category {
  display: inline-block;
  font-size: 12px;
  color: var(--clay);
  background: rgba(140, 74, 47, 0.1);
  padding: 2px 8px;
  border-radius: 3px;
  margin-bottom: 6px;
}

.pub-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}

.pub-date {
  font-size: 12px;
  color: #999;
}

/* ============================================================
   06 · 首页 FAQ
   ============================================================ */

.faq-section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 0;
}

.faq-section .module-title {
  text-align: center;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius);
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.faq-question {
  padding: 16px 24px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--ink);
}

.faq-question::after {
  content: "+";
  font-size: 20px;
  color: var(--clay);
  transition: transform 0.3s;
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 24px 16px;
  font-size: 14px;
  color: #555;
}

/* ============================================================
   07 · 内页通用骨架
   ============================================================ */

.page-title-area,
.page-title-block {
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 24px;
}

.section-number,
.page-section-number {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--bronze);
  display: block;
  margin-bottom: 8px;
}

.page-subtitle,
.page-intro {
  font-size: 15px;
  color: #666;
  max-width: 720px;
}

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

/* 默认：主内容在左，侧栏在右 */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 40px;
}

/* 侧栏在左 */
.sidebar-left {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
}

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

.page-header {
  margin-bottom: 32px;
}

.page-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--clay);
  line-height: 1.3;
}

/* 侧栏通用 */
.sidebar {
  min-width: 0;
}

.sidebar-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--line);
}

.sidebar-intro {
  font-size: 14px;
  color: #666;
  margin-bottom: 16px;
}

.boundary-list,
.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.boundary-item {
  font-size: 14px;
  color: #555;
  padding: 10px 12px;
  background: rgba(140, 74, 47, 0.06);
  border-left: 3px solid var(--clay);
  border-radius: 0 4px 4px 0;
  line-height: 1.5;
}

.sidebar-links li a {
  font-size: 14px;
  color: var(--teal);
  display: block;
  padding: 6px 0;
  border-bottom: 1px dashed var(--line);
}

/* ============================================================
   08 · 内页内容区通用
   ============================================================ */

.content-section,
.content-block {
  margin-bottom: 48px;
}

.section-heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
}

.section-heading .section-number {
  margin-bottom: 0;
  font-size: 16px;
}

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

.section-desc {
  font-size: 15px;
  color: #666;
  margin-bottom: 24px;
}

/* ============================================================
   09 · About 页
   ============================================================ */

.mission-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.mission-text {
  font-size: 15px;
  color: #555;
  line-height: 1.8;
}

.mission-figure {
  border-radius: var(--radius);
  overflow: hidden;
}

.mission-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.method-intro {
  font-size: 15px;
  color: #666;
  margin-bottom: 24px;
}

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

.method-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  align-items: start;
}

.method-index {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--bronze);
}

.method-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 6px;
}

.method-desc {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 0;
}

.standard-text {
  font-size: 15px;
  color: #555;
  margin-bottom: 24px;
}

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

.standard-item {
  font-size: 14px;
  color: #555;
  padding: 14px 18px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border-left: 3px solid var(--teal);
  line-height: 1.6;
}

/* ============================================================
   10 · Services 页
   ============================================================ */

.sidebar-nav {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.sidebar-nav-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-link {
  display: block;
  font-size: 14px;
  color: var(--ink);
  padding: 10px 14px;
  border-radius: 4px;
  border-left: 3px solid transparent;
  transition: all 0.2s;
}

.sidebar-link:hover {
  background: rgba(62, 92, 88, 0.08);
  border-left-color: var(--teal);
  color: var(--teal);
}

.service-item {
  margin-bottom: 32px;
}

.service-item-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.service-number {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--bronze);
}

.service-item-head h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--teal);
}

.service-desc {
  font-size: 15px;
  color: #555;
  margin-bottom: 16px;
}

.service-feature-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 0;
}

.service-feature-list li {
  font-size: 14px;
  color: #666;
  padding-left: 20px;
  position: relative;
  line-height: 1.6;
}

.service-feature-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--bronze);
}

/* 对比表 */
.service-compare {
  margin-top: 48px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.service-compare h2 {
  font-size: 20px;
  color: var(--teal);
  margin-bottom: 20px;
}

.table-responsive {
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.compare-table caption {
  font-size: 13px;
  color: #999;
  text-align: left;
  margin-bottom: 8px;
}

.compare-table th,
.compare-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.compare-table th {
  background: rgba(62, 92, 88, 0.08);
  color: var(--teal);
  font-weight: 700;
  font-family: var(--font-serif);
}

.compare-table td {
  color: #555;
  line-height: 1.6;
}

/* 服务流程 */
.service-process {
  margin-top: 48px;
}

.service-process h2 {
  font-size: 20px;
  color: var(--teal);
  margin-bottom: 8px;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.process-step {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.process-step-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 8px;
}

.process-step-desc {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 0;
}

/* 服务配图 */
.service-media {
  margin-top: 32px;
  border-radius: var(--radius);
  overflow: hidden;
}

.service-media img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.service-media figcaption {
  font-size: 13px;
  color: #999;
  padding: 12px 16px;
  background: var(--white);
  margin-top: 0;
}

/* ============================================================
   11 · Events 页
   ============================================================ */

.layout-right-aside {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 40px;
}

.events-section {
  margin-bottom: 48px;
}

.section-title.with-number {
  display: flex;
  align-items: center;
  gap: 10px;
}

.title-number {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--clay);
  font-weight: 700;
}

.timeline-list {
  position: relative;
  padding-left: 24px;
  border-left: 2px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.event-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  position: relative;
}

.event-item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 24px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bronze);
  border: 2px solid var(--paper);
}

.event-date {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 8px;
}

.event-month {
  font-size: 13px;
  color: var(--teal);
  font-weight: 600;
}

.event-day {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--clay);
}

.event-info {
  min-width: 0;
}

.event-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.event-meta {
  font-size: 14px;
  color: #666;
  margin-bottom: 8px;
}

.event-desc {
  font-size: 14px;
  color: #555;
  line-height: 1.6;
  margin-bottom: 0;
}

/* 往期回顾 */
.past-events-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.past-event-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.event-figure {
  overflow: hidden;
}

.event-figure img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.past-event-body {
  padding: 16px 20px;
}

.past-event-body .event-name {
  font-size: 15px;
  margin-bottom: 6px;
}

.past-event-body .event-desc {
  font-size: 13px;
}

/* 右侧报名说明 */
.sidebar-right {
  min-width: 0;
}

.sidebar-text {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 12px;
}

.sidebar-note {
  background: rgba(201, 151, 0, 0.08);
  border-left: 3px solid var(--bronze);
  padding: 12px 14px;
  font-size: 13px;
  color: #8A6D00;
  border-radius: 0 4px 4px 0;
}

/* ============================================================
   12 · Publications 页
   ============================================================ */

.sidebar-left-panel {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.category-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.category-link {
  display: block;
  font-size: 14px;
  color: var(--ink);
  padding: 10px 14px;
  border-radius: 4px;
  border-left: 3px solid transparent;
  transition: all 0.2s;
}

.category-link:hover {
  background: rgba(62, 92, 88, 0.08);
  border-left-color: var(--teal);
  color: var(--teal);
}

.sidebar-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.note-text {
  font-size: 13px;
  color: #999;
  line-height: 1.6;
}

.research-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 24px;
  overflow: hidden;
}

.research-media {
  overflow: hidden;
}

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

.research-body {
  padding: 24px;
}

.research-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 8px;
}

.research-meta {
  font-size: 13px;
  color: #999;
  margin-bottom: 12px;
}

.research-summary {
  font-size: 15px;
  color: #555;
  line-height: 1.7;
  margin-bottom: 16px;
}

.research-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
  margin-bottom: 16px;
}

.research-detail dt {
  font-size: 13px;
  font-weight: 700;
  color: var(--teal);
}

.research-detail dd {
  font-size: 14px;
  color: #666;
  margin-left: 0;
}

.research-status {
  display: inline-block;
  font-size: 13px;
  color: var(--clay);
  background: rgba(140, 74, 47, 0.08);
  padding: 4px 12px;
  border-radius: 3px;
  margin-bottom: 12px;
}

.related-links {
  border-top: 1px dashed var(--line);
  padding-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-title {
  font-size: 13px;
  color: #999;
  width: 100%;
}

.related-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.related-list a {
  font-size: 13px;
  color: var(--teal);
  padding: 4px 10px;
  background: rgba(62, 92, 88, 0.06);
  border-radius: 3px;
}

/* ============================================================
   13 · Join 页
   ============================================================ */

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

.aside-block {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.aside-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--line);
}

.aside-desc {
  font-size: 14px;
  color: #666;
  margin-bottom: 16px;
}

.material-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.material-item h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--clay);
  margin-bottom: 6px;
}

.material-item p {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 0;
}

/* 加入条件 */
.join-conditions {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.join-conditions .section-number {
  margin-bottom: 4px;
}

.join-conditions h2 {
  font-size: 22px;
  color: var(--teal);
  margin-bottom: 8px;
}

.join-conditions > p {
  font-size: 15px;
  color: #666;
  margin-bottom: 24px;
}

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

.condition-item {
  background: var(--paper);
  border-radius: var(--radius);
  padding: 20px;
  border-top: 3px solid var(--bronze);
}

.condition-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 8px;
}

.condition-item p {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 0;
}

/* 合作流程 */
.join-process {
  margin-top: 48px;
}

.join-process .section-number {
  margin-bottom: 4px;
}

.join-process h2 {
  font-size: 22px;
  color: var(--teal);
  margin-bottom: 8px;
}

.join-process > p {
  font-size: 15px;
  color: #666;
  margin-bottom: 24px;
}

.join-process .process-steps {
  grid-template-columns: 1fr;
  gap: 12px;
}

.join-process .process-step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  align-items: start;
  padding: 20px 24px;
}

.step-number {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--bronze);
  line-height: 1.2;
}

.step-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 6px;
}

.step-body p {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 0;
}

/* 图片区 */
.join-visual {
  margin-top: 48px;
}

.content-figure {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.content-image {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.content-figure figcaption {
  font-size: 13px;
  color: #999;
  padding: 12px 16px;
  background: var(--white);
}

/* 反馈说明 */
.feedback-detail {
  margin-top: 48px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.feedback-detail .section-number {
  margin-bottom: 4px;
}

.feedback-detail h2 {
  font-size: 22px;
  color: var(--teal);
  margin-bottom: 8px;
}

.feedback-detail > p {
  font-size: 15px;
  color: #666;
  margin-bottom: 20px;
}

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

.feedback-list li {
  font-size: 14px;
  color: #555;
  padding-left: 24px;
  position: relative;
  line-height: 1.6;
}

.feedback-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--bronze);
  font-weight: 700;
}

/* ============================================================
   14 · 404 页
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px 24px;
}

.error-section {
  text-align: center;
  max-width: 560px;
}

.error-code {
  font-family: var(--font-serif);
  font-size: 64px;
  font-weight: 700;
  color: var(--clay);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 24px;
  color: var(--ink);
  margin-bottom: 16px;
}

.error-desc {
  font-size: 15px;
  color: #666;
  margin-bottom: 8px;
}

.error-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 24px;
}

.error-button {
  display: inline-block;
  padding: 12px 28px;
  background: var(--teal);
  color: var(--white);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.2s;
}

.error-button:hover {
  background: var(--clay);
  color: var(--white);
  transform: translateY(-2px);
}

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

.error-button.secondary:hover {
  background: rgba(62, 92, 88, 0.08);
}

/* ============================================================
   15 · 页脚相关链接
   ============================================================ */

.related-links {
  max-width: var(--container);
  margin: 0 auto;
  padding: 24px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.related-links-label {
  font-size: 13px;
  color: #999;
  font-weight: 600;
}

.related-links-item {
  font-size: 14px;
  color: var(--teal);
  padding: 6px 14px;
  background: var(--white);
  border-radius: 4px;
  box-shadow: var(--shadow);
  transition: all 0.2s;
}

.related-links-item:hover {
  background: var(--teal);
  color: var(--white);
  transform: translateY(-2px);
}

/* ============================================================
   16 · 移动端导航
   ============================================================ */

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

/* ============================================================
   17 · 响应式
   ============================================================ */

@media (max-width: 1024px) {
  .homepage-portal {
    grid-template-columns: 180px 1fr;
  }
  
  .portal-sidebar.sidebar-right {
    grid-column: 1 / -1;
  }
  
  .page-layout,
  .layout-right-aside {
    grid-template-columns: 1fr 200px;
    gap: 24px;
  }
  
  .sidebar-left {
    grid-template-columns: 200px 1fr;
    gap: 24px;
  }
  
  .past-events-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 60px;
    padding: 0 16px;
  }
  
  .brand-name {
    font-size: 17px;
  }
  
  .brand-tagline {
    display: none;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .primary-nav .nav-list {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    padding: 16px;
    gap: 0;
    box-shadow: var(--shadow);
  }
  
  .primary-nav .nav-list.is-open {
    display: flex;
  }
  
  .primary-nav .nav-list li {
    width: 100%;
  }
  
  .nav-link {
    display: block;
    padding: 12px 16px;
    border-bottom: 1px solid var(--line);
  }
  
  .nav-link.is-current {
    background: transparent;
    color: var(--teal);
    border-left: 3px solid var(--teal);
    border-bottom: 1px solid var(--line);
    padding: 12px 16px;
    border-radius: 0;
  }
  
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px 16px;
  }
  
  .hero-text h1 {
    font-size: 26px;
  }
  
  .hero-media img {
    height: 220px;
  }
  
  .homepage-portal {
    grid-template-columns: 1fr;
    padding: 32px 16px;
    gap: 24px;
  }
  
  .portal-sidebar {
    order: 2;
  }
  
  .portal-main {
    order: 1;
  }
  
  .sidebar-inner {
    position: static;
  }
  
  .page-title-area,
  .page-title-block {
    padding: 32px 16px 16px;
  }
  
  .page-title {
    font-size: 28px;
  }
  
  .layout-shell {
    padding: 0 16px;
  }
  
  .page-layout,
  .layout-right-aside,
  .sidebar-left {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .main-content {
    order: 1;
  }
  
  .sidebar,
  .sidebar-right,
  .page-aside {
    order: 2;
  }
  
  .mission-block {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .mission-figure img {
    height: 200px;
  }
  
  .method-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  
  .process-steps {
    grid-template-columns: 1fr;
  }
  
  .condition-list {
    grid-template-columns: 1fr;
  }
  
  .past-events-grid {
    grid-template-columns: 1fr;
  }
  
  .research-detail {
    grid-template-columns: 1fr;
  }
  
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px 16px;
  }
  
  .faq-section {
    padding: 32px 16px 0;
  }
  
  .related-links {
    padding: 16px;
  }
  
  .process-list {
    grid-template-columns: 1fr;
  }
  
  .service-media img {
    height: 200px;
  }
  
  .timeline-list {
    padding-left: 16px;
  }
  
  .event-item::before {
    left: -21px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 14px;
  }
  
  .hero-questions {
    gap: 12px;
  }
  
  .question-card {
    padding: 14px 16px;
  }
  
  .service-item {
    padding: 16px;
  }
  
  .method-content {
    padding: 20px;
  }
  
  .method-figure img {
    height: 180px;
  }
  
  .research-body {
    padding: 20px;
  }
  
  .research-figure img {
    height: 180px;
  }
  
  .content-image {
    height: 200px;
  }
  
  .join-process .process-step {
    grid-template-columns: 36px 1fr;
    padding: 16px;
  }
  
  .step-number {
    font-size: 18px;
  }
  
  .error-code {
    font-size: 48px;
  }
  
  .error-actions {
    flex-direction: column;
    gap: 12px;
  }
  
  .error-button {
    text-align: center;
  }
  
  .compare-table th,
  .compare-table td {
    padding: 10px 12px;
    font-size: 13px;
  }
  
  .event-item {
    padding: 16px;
  }
  
  .past-event-body {
    padding: 12px 16px;
  }
}