/* =============================================
   37AE.COM - 全局样式
   设计语言：专业·深蓝·金色强调
   ============================================= */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

/* ---- CSS 变量 / 设计令牌 ---- */
:root {
  --color-bg-deep:     #080f1e;
  --color-bg-primary:  #0b1629;
  --color-bg-card:     #0f1f3d;
  --color-bg-card2:    #132952;
  --color-border:      rgba(223,177,91,0.2);
  --color-gold:        #DFB15B;
  --color-gold-light:  #F2D28A;
  --color-gold-dim:    rgba(223,177,91,0.12);
  --color-text:        #f0f4ff;
  --color-text-muted:  #8a9bbf;
  --color-text-dim:    #566070;
  --color-accent-blue: #1a6cff;
  --color-success:     #07c160;

  --color-wechat:      #07c160;

  --font-main: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 40px rgba(201,168,76,0.1);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-main);
  background-color: var(--color-bg-primary);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; outline: none; font-family: var(--font-main); }

/* ---- 滚动条 ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg-deep); }
::-webkit-scrollbar-thumb { background: var(--color-gold); border-radius: 3px; }

/* ============================================
   导航栏 NAV
   ============================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  background: rgba(8,15,30,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.nav.scrolled {
  background: rgba(8,15,30,0.97);
  box-shadow: 0 2px 30px rgba(0,0,0,0.5);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 2px;
}

.nav-logo .logo-text {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-logo .logo-dot {
  width: 8px; height: 8px;
  background: var(--color-gold);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
}

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

.nav-link {
  padding: 8px 20px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 20px; right: 20px;
  height: 2px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: center;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-gold);
}

.nav-link.active::after,
.nav-link:hover::after {
  transform: scaleX(1);
}

/* 汉堡菜单（移动端） */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 5px;
  background: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================
   英雄区域 HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 100px 5% 60px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(26,108,255,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(201,168,76,0.08) 0%, transparent 60%),
    linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg-primary) 100%);
}

/* 粒子网格 */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201,168,76,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,168,76,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--color-gold-dim);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  font-size: 0.82rem;
  color: var(--color-gold);
  letter-spacing: 1px;
  margin-bottom: 28px;
  animation: fadeInDown 0.8s ease forwards;
}

.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--color-gold);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 20px;
  animation: fadeInUp 0.8s 0.1s ease both;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 50%, #fff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 40px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 0.8s 0.2s ease both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s 0.3s ease both;
}

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: var(--transition);
  letter-spacing: 0.5px;
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.btn-gold {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
  color: #1a1200;
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(201,168,76,0.4);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}
.btn-outline:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background: var(--color-gold-dim);
  transform: translateY(-2px);
}

/* ---- 滚动指示 ---- */
.hero-scroll {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-dim);
  font-size: 0.78rem;
  animation: bounce 2s infinite;
}

.hero-scroll .scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--color-gold), transparent);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ============================================
   统计数字区
   ============================================ */
.stats-section {
  padding: 60px 5%;
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stats-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--color-border);
}

.stat-item {
  background: var(--color-bg-card);
  padding: 32px 24px;
  text-align: center;
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--color-gold);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

/* ============================================
   服务卡片区
   ============================================ */
.section {
  padding: 90px 5%;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--color-gold-dim);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  font-size: 0.78rem;
  color: var(--color-gold);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* 分隔线装饰 */
.divider {
  width: 60px; height: 3px;
  background: linear-gradient(to right, var(--color-gold), transparent);
  margin: 20px auto 0;
  border-radius: 2px;
}

.cards-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(to right, var(--color-gold), transparent);
  opacity: 0;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(201,168,76,0.4);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), var(--shadow-glow);
}

.card:hover::before { opacity: 1; }

.card-icon {
  width: 54px; height: 54px;
  background: var(--color-gold-dim);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}

.card-desc {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ============================================
   关于我们区
   ============================================ */
.about-section {
  padding: 90px 5%;
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.about-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 32px;
}

.about-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.about-item-icon {
  width: 42px; height: 42px;
  background: var(--color-gold-dim);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
}

.about-item-text h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.about-item-text p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.about-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.about-visual-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}

.about-visual-card:hover {
  border-color: var(--color-gold);
  transform: translateY(-4px);
}

.about-visual-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-gold);
  margin-bottom: 8px;
}

.about-visual-label {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ============================================
   行业资讯页
   ============================================ */
.page-hero {
  padding: 140px 5% 80px;
  background: linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg-primary) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201,168,76,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,168,76,0.03) 1px, transparent 1px);
  background-size: 50px 50px;
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  margin-bottom: 16px;
  position: relative;
}

.page-hero p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  position: relative;
}

/* 文章列表 */
.articles-section {
  padding: 60px 5% 80px;
  max-width: 1200px;
  margin: 0 auto;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-bottom: 56px;
}

.article-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.article-card:hover {
  border-color: rgba(201,168,76,0.4);
  transform: translateY(-4px);
  box-shadow: 0 16px 50px rgba(0,0,0,0.4), var(--shadow-glow);
}

.article-card-thumb {
  height: 180px;
  background: linear-gradient(135deg, var(--color-bg-card2), var(--color-bg-deep));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.article-card-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(11,22,41,0.8));
}

.article-card-body {
  padding: 24px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.article-tag {
  padding: 3px 10px;
  background: var(--color-gold-dim);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--color-gold);
}

.article-date {
  font-size: 0.78rem;
  color: var(--color-text-dim);
}

.article-title {
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-excerpt {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.article-price {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--color-gold);
  font-weight: 700;
}

.article-price .price-icon { font-size: 1.1rem; }

.article-read-btn {
  padding: 7px 18px;
  background: var(--color-gold-dim);
  border: 1px solid var(--color-border);
  color: var(--color-gold);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  transition: var(--transition);
}

.article-card:hover .article-read-btn {
  background: var(--color-gold);
  color: #1a1200;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.page-btn {
  width: 42px; height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: var(--transition);
  cursor: pointer;
}

.page-btn:hover,
.page-btn.active {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: #1a1200;
  font-weight: 700;
}

/* ============================================
   付费弹窗 PAYMENT MODAL
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(10px);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 520px;
  width: 100%;
  text-align: center;
  position: relative;
  transform: translateY(20px) scale(0.97);
  transition: var(--transition);
  box-shadow: 0 30px 80px rgba(0,0,0,0.7);
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.08);
  border: none;
  border-radius: 50%;
  color: var(--color-text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.modal-close:hover {
  background: rgba(201,168,76,0.2);
  color: var(--color-gold);
}

.modal-title {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.modal-article-name {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  padding: 10px 16px;
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-sm);
}

/* 二维码 Tab */
.qr-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.qr-tab {
  flex: 1;
  padding: 10px;
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}



.qr-tab.wechat.active {
  background: rgba(7,193,96,0.15);
  color: var(--color-wechat);
}

.qr-tab:not(.active):hover {
  background: rgba(255,255,255,0.05);
  color: var(--color-text);
}

.qr-panel {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.qr-panel.active { display: flex; }

.qr-image-wrap {
  width: 200px; height: 200px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 3px solid rgba(255,255,255,0.1);
}

.qr-image-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
}

.qr-hint {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.modal-tips {
  margin-top: 20px;
  padding: 12px 16px;
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--color-text-dim);
  text-align: left;
}

/* ============================================
   联系我们页
   ============================================ */
.contact-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: start;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.contact-info-item:hover {
  border-color: rgba(201,168,76,0.4);
}

.contact-info-icon {
  width: 44px; height: 44px;
  background: var(--color-gold-dim);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
}

.contact-info-text h4 {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.contact-info-text p {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.6;
}

/* 联系表单 */
.contact-form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.form-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 28px;
}

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

.form-label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-input,
.form-textarea {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.92rem;
  color: var(--color-text);
  font-family: var(--font-main);
  transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-gold);
  background: rgba(201,168,76,0.05);
}

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

::placeholder { color: var(--color-text-dim); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--color-bg-deep);
  border-top: 1px solid var(--color-border);
  padding: 48px 5% 32px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 40px;
}

.footer-brand .footer-logo {
  font-size: 1.6rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  max-width: 280px;
  line-height: 1.7;
}

.footer-nav h4 {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

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

.footer-nav ul li a {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.footer-nav ul li a:hover { color: var(--color-gold); }

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--color-text-dim);
  text-align: center;
  line-height: 1.8;
}

.footer-bottom a {
  color: var(--color-text-dim);
  transition: var(--transition);
}

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

.footer-bottom strong {
  color: var(--color-text-muted);
}

/* ============================================
   动画 ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ============================================
   响应式 RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .about-inner { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: rgba(8,15,30,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px;
    gap: 8px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .nav-link { width: 100%; text-align: center; padding: 12px 20px; }
  .nav-toggle { display: flex; }

  .cards-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .about-visual { grid-template-columns: repeat(2, 1fr); }
  .footer-top { flex-direction: column; }
  .modal { padding: 28px 20px; }
  .hero-title { font-size: 2rem; }
  .contact-form { padding: 24px 20px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .qr-image-wrap { width: 170px; height: 170px; }
}

/* ============================================
   通用工具类
   ============================================ */
.text-gold { color: var(--color-gold); }
.text-center { text-align: center; }
.container { max-width: 1100px; margin: 0 auto; }
.mt-auto { margin-top: auto; }

/* ============================================
   二维码金额徽章
   ============================================ */
.qr-code-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  width: 100%;
}
.qr-amount-badge {
  display: flex;
  align-items: baseline;
  gap: 6px;
  background: linear-gradient(135deg, #C9A84C, #e8c96c);
  color: #1a1200;
  border-radius: 10px 10px 0 0;
  padding: 10px 28px 14px;
  text-align: center;
  width: 200px;
  justify-content: center;
  box-shadow: 0 -2px 12px rgba(201,168,76,0.3);
}
.qr-amount-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 1px;
  opacity: 0.8;
}
.qr-amount-number {
  font-size: 1.7rem;
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1;
}
.qr-amount-sub {
  font-size: 0.78rem;
  opacity: 0.7;
  font-weight: 500;
}
.qr-image-wrap {
  border-radius: 0 !important;
  border-top: none !important;
  width: 200px;
  height: 200px;
  border: 3px solid rgba(255,255,255,0.1);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
}
.qr-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.qr-image-wrap canvas {
  display: block;
}
.qr-pay-type {
  width: 200px;
  padding: 8px 0;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 0 0 10px 10px;
  letter-spacing: 0.5px;
}
.wechat-color {
  background: rgba(7,193,96,0.15);
  color: #07c160;
  border: 1px solid rgba(7,193,96,0.25);
  border-top: none;
}