/* ==================== 炎帝根脉AI共创数字艺术大展 赛事官网 ==================== */
/* 主题色：国风红 #9F2222 / 黑金辅色 #222222 / 米白底色 #F8F5F0 */

:root {
  --color-primary: #9F2222;
  --color-primary-light: #C94545;
  --color-primary-dark: #6B1313;
  --color-dark: #222222;
  --color-bg: #F8F5F0;
  --color-bg-alt: #F0EBE3;
  --color-gold: #C9A14A;
  --color-gold-light: #E0C170;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-border: #D9D2C5;
  --color-white: #FFFFFF;
}

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

body {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  min-height: 100vh;
}

/* ========== 通用容器 ========== */
.container-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== 导航栏 ========== */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(248, 245, 240, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--color-primary);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo-icon {
  width: 42px;
  height: 42px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  font-weight: bold;
  flex-shrink: 0;
}

.nav-logo-text {
  font-size: 18px;
  font-weight: bold;
  color: var(--color-dark);
  letter-spacing: 1px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 8px 16px;
  text-decoration: none;
  color: var(--color-dark);
  font-size: 15px;
  border-radius: 6px;
  transition: all 0.3s;
  font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
  background: var(--color-primary);
  color: #fff;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--color-dark);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--color-bg-alt);
  border-radius: 20px;
  padding: 3px;
}

.lang-btn {
  padding: 4px 12px;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 13px;
  border-radius: 16px;
  color: var(--color-text-light);
  transition: all 0.3s;
}

.lang-btn.active {
  background: var(--color-primary);
  color: #fff;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--color-dark);
  color: #ccc;
  padding: 40px 0 20px;
  margin-top: 60px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.footer-col h4 {
  color: var(--color-gold);
  font-size: 16px;
  margin-bottom: 15px;
  letter-spacing: 1px;
}

.footer-col a,
.footer-col p {
  color: #aaa;
  font-size: 13px;
  text-decoration: none;
  display: block;
  margin-bottom: 8px;
  cursor: pointer;
  transition: color 0.3s;
}

.footer-col a:hover {
  color: var(--color-gold-light);
}

.footer-terms {
  max-width: 1200px;
  margin: 30px auto 0;
  padding: 22px 20px 0;
  border-top: 1px solid #444;
}

.footer-terms h4 {
  color: var(--color-gold);
  font-size: 15px;
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.footer-terms ol {
  margin: 0;
  padding-left: 20px;
  color: #999;
  font-size: 13px;
  line-height: 1.9;
}

.footer-terms ol li {
  margin-bottom: 4px;
}

.footer-notice {
  max-width: 1200px;
  margin: 20px auto 0;
  padding: 15px 20px 0;
  border-top: 1px solid #444;
  text-align: center;
  color: #888;
  font-size: 12px;
  line-height: 1.8;
}

/* ========== Banner ========== */
.hero-banner {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, #6B1313 0%, #9F2222 50%, #6B1313 100%);
}

.hero-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200' viewBox='0 0 200 200'%3E%3Cg fill='%23C9A14A' fill-opacity='0.08'%3E%3Cpath d='M100 20l20 60h60l-50 35 20 65-50-40-50 40 20-65-50-35h60z'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 300px;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 80px 20px;
  max-width: 900px;
}

.hero-badge {
  display: inline-block;
  background: rgba(201, 161, 74, 0.2);
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  padding: 5px 18px;
  border-radius: 20px;
  font-size: 13px;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero-title {
  font-size: 42px;
  color: #fff;
  font-weight: bold;
  letter-spacing: 3px;
  margin-bottom: 15px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 20px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 30px;
  letter-spacing: 2px;
}

.hero-desc {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 700px;
  margin: 0 auto;
  line-height: 2;
}

/* ========== 快捷入口卡片 ========== */
.quick-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: -50px auto 0;
  position: relative;
  z-index: 10;
  max-width: 1200px;
  padding: 0 20px;
}

.quick-card {
  background: #fff;
  border-radius: 12px;
  padding: 30px 20px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  text-decoration: none;
  color: var(--color-dark);
  transition: all 0.3s;
  border-top: 3px solid var(--color-primary);
}

.quick-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px rgba(159, 34, 34, 0.15);
}

.quick-card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 15px;
  background: var(--color-bg-alt);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
}

.quick-card-title {
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 6px;
}

.quick-card-desc {
  font-size: 13px;
  color: var(--color-text-light);
}

/* ========== 区块通用 ========== */
.section-block {
  padding: 60px 0;
}

.section-block.alt {
  background: var(--color-bg-alt);
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 28px;
  color: var(--color-dark);
  letter-spacing: 2px;
  margin-bottom: 10px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: "";
  display: block;
  width: 50px;
  height: 3px;
  background: var(--color-primary);
  margin: 10px auto 0;
}

.section-header p {
  font-size: 14px;
  color: var(--color-text-light);
}

/* ========== 公告栏 ========== */
.notice-board {
  background: #fff;
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  border-left: 4px solid var(--color-primary);
}

.notice-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--color-border);
}

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

.notice-tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: bold;
  white-space: nowrap;
  flex-shrink: 0;
}

.notice-tag.urgent { background: #FEE2E2; color: #9F2222; }
.notice-tag.info { background: #FEF3C7; color: #92400E; }
.notice-tag.normal { background: #D1FAE5; color: #065F46; }

.notice-text {
  font-size: 14px;
  color: var(--color-text);
  flex: 1;
}

.notice-date {
  font-size: 12px;
  color: var(--color-text-light);
  white-space: nowrap;
}

/* ========== 时间轴 ========== */
.timeline {
  position: relative;
  padding: 20px 0;
}

.timeline-track {
  display: flex;
  overflow-x: auto;
  gap: 0;
  padding: 20px 0;
  position: relative;
}

.timeline-track::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(to right, var(--color-primary), var(--color-gold));
  z-index: 0;
}

.timeline-node {
  flex: 0 0 200px;
  text-align: center;
  position: relative;
  z-index: 1;
  padding: 0 10px;
}

.timeline-dot {
  width: 20px;
  height: 20px;
  background: var(--color-primary);
  border: 4px solid #fff;
  border-radius: 50%;
  margin: 0 auto;
  box-shadow: 0 0 0 3px var(--color-primary);
  position: relative;
  z-index: 2;
}

.timeline-phase {
  margin-top: 15px;
}

.timeline-phase-title {
  font-size: 14px;
  font-weight: bold;
  color: var(--color-primary);
  margin-bottom: 5px;
}

.timeline-phase-time {
  font-size: 12px;
  color: var(--color-text-light);
}

.timeline-phase-desc {
  font-size: 12px;
  color: var(--color-text-light);
  margin-top: 5px;
  line-height: 1.6;
}

/* ========== 奖项卡片 ========== */
.award-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.award-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  text-align: center;
  transition: all 0.3s;
}

.award-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.award-card-top {
  padding: 25px 15px 15px;
  color: #fff;
}

.award-card-top.gold { background: linear-gradient(135deg, #C9A14A, #E0C170); }
.award-card-top.silver { background: linear-gradient(135deg, #999, #BBB); }
.award-card-top.bronze { background: linear-gradient(135deg, #A0522D, #CD853F); }
.award-card-top.special { background: linear-gradient(135deg, #9F2222, #C94545); }
.award-card-top.pair { background: linear-gradient(135deg, #222, #444); }

.award-medal {
  font-size: 36px;
  margin-bottom: 5px;
}

.award-name {
  font-size: 18px;
  font-weight: bold;
}

.award-count {
  font-size: 13px;
  opacity: 0.9;
  margin-top: 4px;
}

.award-card-body {
  padding: 15px;
}

.award-prize {
  font-size: 15px;
  color: var(--color-primary);
  font-weight: bold;
}

.award-desc {
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: 5px;
}

/* ========== Tab 切换 ========== */
.tab-bar {
  display: flex;
  gap: 0;
  border-bottom: 3px solid var(--color-border);
  margin-bottom: 30px;
  overflow-x: auto;
}

.tab-btn {
  padding: 12px 28px;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 15px;
  color: var(--color-text-light);
  border-bottom: 3px solid transparent;
  margin-bottom: -3px;
  transition: all 0.3s;
  white-space: nowrap;
  font-family: inherit;
}

.tab-btn:hover {
  color: var(--color-primary);
}

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: bold;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.3s;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ========== 表单 ========== */
.form-card {
  background: #fff;
  border-radius: 12px;
  padding: 35px;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
  max-width: 700px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 22px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: bold;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.form-label .required {
  color: var(--color-primary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--color-text);
  background: #fff;
  transition: border-color 0.3s;
  font-family: inherit;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(159, 34, 34, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-hint {
  font-size: 12px;
  color: var(--color-text-light);
  margin-top: 5px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

.radio-group,
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.radio-item,
.checkbox-item {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.radio-item input,
.checkbox-item input {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
}

.btn-primary {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 12px 40px;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.3s;
  font-family: inherit;
  letter-spacing: 1px;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 4px 15px rgba(159, 34, 34, 0.3);
}

.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  padding: 10px 32px;
  border-radius: 8px;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.3s;
  font-family: inherit;
  text-decoration: none;
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ========== 文件上传 ========== */
.upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
  background: var(--color-bg);
}

.upload-zone:hover {
  border-color: var(--color-primary);
  background: rgba(159, 34, 34, 0.03);
}

.upload-icon {
  font-size: 40px;
  color: var(--color-text-light);
  margin-bottom: 10px;
}

.upload-text {
  font-size: 14px;
  color: var(--color-text-light);
}

.upload-hint {
  font-size: 12px;
  color: var(--color-text-light);
  margin-top: 5px;
}

.file-list {
  margin-top: 15px;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-bg-alt);
  padding: 8px 14px;
  border-radius: 6px;
  margin-bottom: 8px;
  font-size: 13px;
}

.file-remove {
  color: var(--color-primary);
  cursor: pointer;
  font-size: 18px;
}

/* ========== 素材卡片 ========== */
.resource-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
}

.resource-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: all 0.3s;
}

.resource-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.resource-card-header {
  padding: 25px 20px;
  text-align: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
}

.resource-card-header.gold {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
}

.resource-card-header.dark {
  background: linear-gradient(135deg, var(--color-dark), #444);
}

.resource-card-icon {
  font-size: 36px;
  margin-bottom: 8px;
}

.resource-card-title {
  font-size: 17px;
  font-weight: bold;
}

.resource-card-body {
  padding: 20px;
}

.resource-card-list {
  list-style: none;
  margin-bottom: 15px;
}

.resource-card-list li {
  padding: 6px 0;
  font-size: 13px;
  color: var(--color-text-light);
  border-bottom: 1px dashed var(--color-border);
}

.resource-card-list li:last-child {
  border-bottom: none;
}

/* ========== 展厅 ========== */
.gallery-filters {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.gallery-filter {
  padding: 8px 22px;
  border: 2px solid var(--color-border);
  border-radius: 20px;
  background: #fff;
  cursor: pointer;
  font-size: 14px;
  color: var(--color-text-light);
  transition: all 0.3s;
  font-family: inherit;
}

.gallery-filter.active,
.gallery-filter:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(159, 34, 34, 0.05);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 25px;
}

.gallery-item {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  cursor: pointer;
  transition: all 0.3s;
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.gallery-item-img {
  width: 100%;
  height: 200px;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 50px;
  color: var(--color-border);
  overflow: hidden;
}

.gallery-item-info {
  padding: 15px;
}

.gallery-item-title {
  font-size: 15px;
  font-weight: bold;
  color: var(--color-dark);
  margin-bottom: 4px;
}

.gallery-item-author {
  font-size: 13px;
  color: var(--color-text-light);
}

.gallery-item-desc {
  font-size: 12px;
  color: var(--color-text-light);
  margin-top: 6px;
  line-height: 1.6;
}

.gallery-award-badge {
  display: inline-block;
  background: var(--color-gold);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  margin-top: 6px;
}

/* ========== 模态弹窗 ========== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.modal-overlay.show {
  display: flex;
}

.modal-box {
  background: #fff;
  border-radius: 12px;
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 24px;
  cursor: pointer;
  color: var(--color-text-light);
  z-index: 1;
}

.modal-img {
  width: 100%;
  height: 400px;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
  color: var(--color-border);
}

.modal-body {
  padding: 25px;
}

/* ========== 提示消息 ========== */
.toast-msg {
  display: none;
  position: fixed;
  top: 100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-dark);
  color: #fff;
  padding: 14px 30px;
  border-radius: 8px;
  font-size: 14px;
  z-index: 3000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.toast-msg.show {
  display: block;
  animation: slideDown 0.3s;
}

@keyframes slideDown {
  from { transform: translate(-50%, -20px); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}

/* ========== 信息卡片 ========== */
.info-card {
  background: #fff;
  border-radius: 12px;
  padding: 25px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  margin-bottom: 20px;
}

.info-card-title {
  font-size: 18px;
  font-weight: bold;
  color: var(--color-primary);
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.info-card-title::before {
  content: "";
  width: 4px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 2px;
}

.info-card-content {
  font-size: 14px;
  color: var(--color-text);
  line-height: 2;
}

.info-card-content p {
  margin-bottom: 12px;
}

.info-card-content ul {
  padding-left: 20px;
  margin-bottom: 12px;
}

.info-card-content li {
  margin-bottom: 6px;
}

/* ========== 赛道卡片 ========== */
.track-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.track-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: all 0.3s;
}

.track-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.track-card-header {
  padding: 30px 20px;
  text-align: center;
  color: #fff;
}

.track-card-header:nth-child(1) { background: linear-gradient(135deg, #9F2222, #C94545); }
.track-card:nth-child(2) .track-card-header { background: linear-gradient(135deg, #222, #444); }
.track-card:nth-child(3) .track-card-header { background: linear-gradient(135deg, #C9A14A, #E0C170); }

.track-card-icon {
  font-size: 40px;
  margin-bottom: 8px;
}

.track-card-name {
  font-size: 18px;
  font-weight: bold;
}

.track-card-body {
  padding: 20px;
}

.track-card-body p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ========== FAQ ========== */
.faq-item {
  background: #fff;
  border-radius: 10px;
  margin-bottom: 12px;
  overflow: hidden;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
}

.faq-question {
  padding: 18px 22px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15px;
  font-weight: bold;
  color: var(--color-dark);
  transition: background 0.3s;
}

.faq-question:hover {
  background: var(--color-bg-alt);
}

.faq-question .arrow {
  transition: transform 0.3s;
  font-size: 18px;
}

.faq-item.open .faq-question .arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 22px 18px;
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 2;
}

/* ========== 组织模式卡片 ========== */
.mode-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px;
  margin-bottom: 30px;
}

.mode-card {
  background: #fff;
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  border-top: 4px solid var(--color-primary);
  transition: all 0.3s;
}

.mode-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.mode-card-num {
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 15px;
}

.mode-card-title {
  font-size: 18px;
  font-weight: bold;
  color: var(--color-dark);
  margin-bottom: 10px;
}

.mode-card-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 2;
}

/* ========== 页面标题区 ========== */
.page-header {
  background: linear-gradient(135deg, #6B1313 0%, #9F2222 100%);
  padding: 120px 0 50px;
  text-align: center;
  color: #fff;
  position: relative;
}

.page-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200' viewBox='0 0 200 200'%3E%3Cg fill='%23C9A14A' fill-opacity='0.06'%3E%3Cpath d='M100 20l20 60h60l-50 35 20 65-50-40-50 40 20-65-50-35h60z'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 300px;
}

.page-header h1 {
  position: relative;
  z-index: 1;
  font-size: 32px;
  letter-spacing: 3px;
  margin-bottom: 8px;
}

.page-header p {
  position: relative;
  z-index: 1;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: 10px 0;
    border-bottom: 2px solid var(--color-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }

  .nav-menu.show {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .nav-logo-text {
    font-size: 15px;
  }

  .quick-cards {
    grid-template-columns: repeat(2, 1fr);
    margin-top: -30px;
  }

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

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

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 26px;
    letter-spacing: 1px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .timeline-node {
    flex: 0 0 160px;
  }
}

@media (max-width: 480px) {
  .quick-cards {
    grid-template-columns: 1fr;
  }

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

  .form-card {
    padding: 20px;
  }
}