/* =========================================================
   每日大赛官网 - 全站样式
   主题色：深海蓝 + 活力橙
   ========================================================= */

/* ---------- 基础重置 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #0b3d91;
  --color-primary-dark: #072a6b;
  --color-primary-light: #1e5fd6;
  --color-accent: #ff6b1a;
  --color-accent-dark: #e5550a;
  --color-gold: #f5b301;
  --color-bg: #f6f8fc;
  --color-surface: #ffffff;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-border: #e5e7eb;
  --shadow-sm: 0 2px 8px rgba(11, 61, 145, 0.08);
  --shadow-md: 0 6px 20px rgba(11, 61, 145, 0.12);
  --shadow-lg: 0 14px 40px rgba(11, 61, 145, 0.18);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* ---------- 通用容器 ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 56px;
}

.section-title h2 {
  font-size: 2.2rem;
  color: var(--color-primary);
  margin-bottom: 14px;
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
  border-radius: 2px;
  margin: 14px auto 0;
}

.section-title p {
  color: var(--color-text-light);
  font-size: 1rem;
  max-width: 640px;
  margin: 0 auto;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: #fff;
  box-shadow: 0 6px 18px rgba(255, 107, 26, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 26px rgba(255, 107, 26, 0.5);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.7);
}

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

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

.btn-secondary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* ---------- 导航栏 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(11, 61, 145, 0.08);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
}

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

.brand-logo {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  box-shadow: var(--shadow-sm);
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-links a {
  padding: 8px 16px;
  border-radius: 8px;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
  background: rgba(11, 61, 145, 0.06);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--color-primary);
  cursor: pointer;
}

/* ---------- Hero 主视觉 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 60%, #051d4a 100%);
  color: #fff;
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 30%, rgba(255, 107, 26, 0.25), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(245, 179, 1, 0.18), transparent 45%);
  animation: heroFloat 12s ease-in-out infinite;
}

@keyframes heroFloat {
  0%, 100% { transform: scale(1) translate(0, 0); }
  50% { transform: scale(1.08) translate(-2%, 2%); }
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-content {
  animation: fadeInUp 1s ease both;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 107, 26, 0.18);
  border: 1px solid rgba(255, 107, 26, 0.5);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.2;
  margin-bottom: 20px;
  font-weight: 800;
}

.hero h1 .highlight {
  background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 48px;
}

.hero-stat .num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-gold);
}

.hero-stat .label {
  font-size: 0.85rem;
  opacity: 0.8;
}

.hero-image {
  position: relative;
  animation: fadeInRight 1.2s ease both;
}

.hero-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: 440px;
  object-fit: cover;
}

.hero-image .floating-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.95);
  color: var(--color-text);
  padding: 14px 20px;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  font-size: 0.85rem;
  font-weight: 600;
  animation: float 3s ease-in-out infinite;
}

.hero-image .floating-card.card-1 {
  top: 24px;
  left: -24px;
}

.hero-image .floating-card.card-2 {
  bottom: 36px;
  right: -24px;
  animation-delay: 1s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ---------- 核心特性 ---------- */
.features {
  background: var(--color-surface);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 68px;
  height: 68px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(11, 61, 145, 0.1), rgba(255, 107, 26, 0.12));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.feature-card h3 {
  font-size: 1.2rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-text-light);
  font-size: 0.92rem;
}

/* ---------- 服务介绍 ---------- */
.services {
  background: var(--color-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.service-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

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

.service-body {
  padding: 24px;
}

.service-tag {
  display: inline-block;
  background: rgba(255, 107, 26, 0.1);
  color: var(--color-accent-dark);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 12px;
}

.service-card h3 {
  font-size: 1.2rem;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.service-card p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.service-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.service-meta .price {
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1.1rem;
}

/* ---------- 详细内容 / 赛事流程 ---------- */
.process {
  background: var(--color-surface);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  position: relative;
}

.process-step {
  text-align: center;
  padding: 24px;
  position: relative;
}

.step-number {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  box-shadow: var(--shadow-md);
}

.process-step h3 {
  color: var(--color-primary);
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.process-step p {
  color: var(--color-text-light);
  font-size: 0.88rem;
}

/* ---------- 数据展示 ---------- */
.stats-section {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  padding: 70px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px;
  text-align: center;
}

.stat-item .num {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--color-gold);
  margin-bottom: 6px;
}

.stat-item .label {
  opacity: 0.9;
  font-size: 0.95rem;
}

/* ---------- 新闻 / 资讯 ---------- */
.news {
  background: var(--color-bg);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.news-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.news-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.news-body {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-date {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.news-card h3 {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 10px;
  line-height: 1.5;
}

.news-card p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 16px;
  flex: 1;
}

.news-link {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.9rem;
  align-self: flex-start;
}

.news-link:hover {
  gap: 8px;
}

/* ---------- CTA 行动号召 ---------- */
.cta {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  color: #fff;
  text-align: center;
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15), transparent 40%);
}

.cta .container {
  position: relative;
  z-index: 1;
}

.cta h2 {
  font-size: 2.2rem;
  margin-bottom: 14px;
}

.cta p {
  max-width: 600px;
  margin: 0 auto 32px;
  opacity: 0.95;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta .btn-primary {
  background: #fff;
  color: var(--color-accent-dark);
}

.cta .btn-outline {
  border-color: #fff;
  color: #fff;
}

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

/* ---------- 页脚 ---------- */
.site-footer {
  background: #061a3d;
  color: #c7d2e0;
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .brand-name {
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.footer-social a:hover {
  background: var(--color-accent);
  transform: translateY(-3px);
}

.footer-col h4 {
  color: #fff;
  margin-bottom: 18px;
  font-size: 1rem;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  color: #c7d2e0;
}

.footer-col ul li a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0;
  text-align: center;
  font-size: 0.85rem;
}

/* ---------- 内页通用 Banner ---------- */
.page-banner {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  padding: 140px 0 70px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 70% 30%, rgba(255, 107, 26, 0.2), transparent 40%);
}

.page-banner .container {
  position: relative;
  z-index: 1;
}

.page-banner h1 {
  font-size: 2.4rem;
  margin-bottom: 12px;
}

.breadcrumb {
  font-size: 0.9rem;
  opacity: 0.85;
}

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

/* ---------- 关于我们 ---------- */
.about-intro {
  background: var(--color-surface);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.about-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.about-text h2 {
  color: var(--color-primary);
  font-size: 2rem;
  margin-bottom: 18px;
}

.about-text p {
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.mission-list {
  margin-top: 24px;
}

.mission-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  color: var(--color-text);
}

.mission-list li::before {
  content: "✓";
  background: var(--color-accent);
  color: #fff;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* 团队 */
.team-section {
  background: var(--color-bg);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
}

.team-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.team-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

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

.team-info {
  padding: 20px;
}

.team-info h3 {
  color: var(--color-primary);
  margin-bottom: 4px;
}

.team-info .role {
  color: var(--color-accent);
  font-size: 0.88rem;
  font-weight: 600;
}

/* ---------- 联系我们 ---------- */
.contact-section {
  background: var(--color-surface);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}

.contact-info-box {
  background: var(--color-bg);
  padding: 36px;
  border-radius: var(--radius-lg);
}

.contact-info-box h3 {
  color: var(--color-primary);
  margin-bottom: 24px;
  font-size: 1.4rem;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 22px;
}

.contact-icon {
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-item h4 {
  color: var(--color-primary);
  margin-bottom: 4px;
  font-size: 0.98rem;
}

.contact-item p {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.contact-form {
  background: var(--color-surface);
  padding: 36px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.92rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
  background: var(--color-bg);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(11, 61, 145, 0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.map-placeholder {
  margin-top: 48px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.map-placeholder img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

/* ---------- 新闻列表 ---------- */
.news-list-section {
  background: var(--color-surface);
}

.news-filters {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 8px 20px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--color-text);
  transition: var(--transition);
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}

.pagination a {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  color: var(--color-text);
  font-weight: 600;
}

.pagination a.active,
.pagination a:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ---------- 新闻详情 ---------- */
.article-section {
  background: var(--color-surface);
}

.article-wrap {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  max-width: 1100px;
  margin: 0 auto;
}

.article-content {
  background: var(--color-surface);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.article-meta {
  display: flex;
  gap: 20px;
  color: var(--color-text-light);
  font-size: 0.88rem;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-cover {
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 28px;
}

.article-cover img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

.article-body h2 {
  color: var(--color-primary);
  font-size: 1.4rem;
  margin: 28px 0 14px;
}

.article-body h3 {
  color: var(--color-primary-dark);
  font-size: 1.15rem;
  margin: 22px 0 10px;
}

.article-body p {
  margin-bottom: 16px;
  color: var(--color-text);
}

.article-body blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 14px 20px;
  background: rgba(255, 107, 26, 0.06);
  margin: 22px 0;
  border-radius: 0 8px 8px 0;
  color: var(--color-text-light);
  font-style: italic;
}

.article-tags {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.tag {
  padding: 5px 14px;
  background: var(--color-bg);
  border-radius: 50px;
  font-size: 0.82rem;
  color: var(--color-primary);
}

/* 侧边栏 */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-box {
  background: var(--color-bg);
  padding: 24px;
  border-radius: var(--radius-lg);
}

.sidebar-box h4 {
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.sidebar-news li {
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--color-border);
}

.sidebar-news li:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.sidebar-news a {
  color: var(--color-text);
  font-size: 0.9rem;
  display: block;
  line-height: 1.5;
}

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

.sidebar-news .date {
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

/* ---------- FAQ 常见问题 ---------- */
.faq-section {
  background: var(--color-bg);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-surface);
  border-radius: var(--radius);
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-question .icon {
  color: var(--color-accent);
  font-size: 1.3rem;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.open .faq-answer {
  max-height: 400px;
}

.faq-answer-inner {
  padding: 0 24px 22px;
  color: var(--color-text-light);
  font-size: 0.92rem;
  line-height: 1.8;
}

/* ---------- 产品/服务页 详细 ---------- */
.products-section {
  background: var(--color-surface);
}

.products-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.product-tab {
  padding: 10px 22px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text);
  transition: var(--transition);
}

.product-tab.active,
.product-tab:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 40px 0;
}

.product-detail.reverse .product-image {
  order: 2;
}

.product-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.product-detail h3 {
  color: var(--color-primary);
  font-size: 1.6rem;
  margin-bottom: 16px;
}

.product-detail p {
  color: var(--color-text-light);
  margin-bottom: 18px;
}

.product-features {
  margin-bottom: 24px;
}

.product-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  color: var(--color-text);
  font-size: 0.95rem;
}

.product-features li::before {
  content: "▶";
  color: var(--color-accent);
  font-size: 0.7rem;
}

/* ---------- 合作伙伴 ---------- */
.partners {
  background: var(--color-bg);
  padding: 60px 0;
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 24px;
  align-items: center;
}

.partner-logo {
  background: var(--color-surface);
  height: 80px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.partner-logo:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  color: var(--color-primary);
}

/* ---------- 滚动淡入动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 回到顶部 ---------- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  border: none;
  font-size: 1.2rem;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-accent);
  transform: translateY(-3px);
}

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
  .hero .container,
  .about-grid,
  .contact-grid,
  .product-detail {
    grid-template-columns: 1fr;
  }

  .product-detail.reverse .product-image {
    order: 0;
  }

  .article-wrap {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }

  .section-title h2 {
    font-size: 1.6rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-image img {
    height: 300px;
  }

  .hero-stats {
    gap: 20px;
  }

  .hero-stat .num {
    font-size: 1.5rem;
  }

  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    box-shadow: var(--shadow-md);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-cta .btn {
    display: none;
  }

  .page-banner {
    padding: 120px 0 50px;
  }

  .page-banner h1 {
    font-size: 1.8rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .about-image img {
    height: 280px;
  }

  .article-content,
  .contact-form,
  .contact-info-box {
    padding: 24px;
  }

  .article-cover img {
    height: 220px;
  }

  .cta h2 {
    font-size: 1.6rem;
  }

  .hero-image .floating-card {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.7rem;
  }

  .btn {
    padding: 10px 22px;
    font-size: 0.88rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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