/* ============================================
   每日大赛官网 - 主样式文件
   www.huvehyv.cn
   深灰 + 香槟金 + 纯黑 高端极简风格
   ============================================ */

/* CSS变量 */
:root {
  --black: #0a0a0a;
  --deep-gray: #1a1a1a;
  --dark-gray: #2c2c2c;
  --mid-gray: #3d3d3d;
  --light-gray: #888888;
  --pale-gray: #c8c8c8;
  --white: #f5f5f0;
  --champagne: #c9a96e;
  --champagne-light: #e8d5a3;
  --champagne-dark: #9a7a4a;
  --font-serif: 'Noto Serif SC', 'SimSun', Georgia, serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-gold: 0 4px 24px rgba(201,169,110,0.15);
  --radius: 2px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background-color: var(--black);
  color: var(--pale-gray);
  font-family: var(--font-sans);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--champagne); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--champagne-light); }
ul, ol { list-style: none; }

/* ============ 排版 ============ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--white);
  line-height: 1.4;
  font-weight: 400;
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); letter-spacing: 0.05em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); letter-spacing: 0.04em; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.8rem); letter-spacing: 0.03em; }
h4 { font-size: 1.2rem; }
p { margin-bottom: 1rem; color: var(--pale-gray); }

.gold-text { color: var(--champagne); }
.section-label {
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--champagne);
  display: block;
  margin-bottom: 1rem;
}
.section-title { margin-bottom: 0.5rem; }
.section-subtitle {
  color: var(--light-gray);
  font-size: 1rem;
  max-width: 600px;
  margin-bottom: 3rem;
}
.divider {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--champagne), transparent);
  margin: 1.5rem auto;
}
.divider-left {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, var(--champagne), transparent);
  margin: 1.5rem 0;
}

/* ============ 容器 ============ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.section {
  padding: 5rem 0;
}
.section-alt {
  background-color: var(--deep-gray);
}
.section-dark {
  background-color: var(--black);
}

/* ============ 按钮 ============ */
.btn {
  display: inline-block;
  padding: 0.85rem 2.5rem;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  border-radius: var(--radius);
}
.btn-gold {
  background: linear-gradient(135deg, var(--champagne-dark), var(--champagne), var(--champagne-dark));
  color: var(--black);
  font-weight: 600;
}
.btn-gold:hover {
  background: linear-gradient(135deg, var(--champagne), var(--champagne-light), var(--champagne));
  color: var(--black);
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--champagne);
  border: 1px solid var(--champagne);
}
.btn-outline:hover {
  background: var(--champagne);
  color: var(--black);
}

/* ============ 导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(201,169,110,0.15);
  transition: var(--transition);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  padding: 0 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}
.nav-logo img {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border-radius: 50%;
}
.nav-logo-text {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--white);
  letter-spacing: 0.1em;
}
.nav-logo-text span { color: var(--champagne); }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-menu a {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--pale-gray);
  position: relative;
  padding-bottom: 4px;
}
.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--champagne);
  transition: var(--transition);
}
.nav-menu a:hover { color: var(--champagne); }
.nav-menu a:hover::after { width: 100%; }
.nav-cta {
  padding: 0.5rem 1.5rem;
  background: transparent;
  border: 1px solid var(--champagne);
  color: var(--champagne) !important;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  transition: var(--transition);
}
.nav-cta:hover {
  background: var(--champagne) !important;
  color: var(--black) !important;
}
.nav-cta::after { display: none !important; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--pale-gray);
  transition: var(--transition);
}

/* ============ 搜索框 ============ */
.search-bar-wrap {
  background: var(--deep-gray);
  border-bottom: 1px solid rgba(201,169,110,0.1);
  padding: 0.6rem 0;
}
.search-bar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.search-input {
  flex: 1;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(201,169,110,0.2);
  color: var(--pale-gray);
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-family: var(--font-sans);
  outline: none;
  border-radius: var(--radius);
  transition: var(--transition);
}
.search-input::placeholder { color: var(--light-gray); }
.search-input:focus { border-color: var(--champagne); background: rgba(201,169,110,0.05); }
.search-btn {
  background: var(--champagne);
  color: var(--black);
  border: none;
  padding: 0.5rem 1.25rem;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  border-radius: var(--radius);
  transition: var(--transition);
  font-family: var(--font-sans);
}
.search-btn:hover { background: var(--champagne-light); }

/* ============ Hero Banner ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 110px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,10,10,0.85) 0%, rgba(10,10,10,0.5) 60%, rgba(10,10,10,0.7) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}
.hero-badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  border: 1px solid var(--champagne);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--champagne);
  margin-bottom: 1.5rem;
}
.hero h1 { margin-bottom: 1.5rem; }
.hero-desc {
  font-size: 1.05rem;
  color: var(--pale-gray);
  margin-bottom: 2.5rem;
  max-width: 540px;
  line-height: 2;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-stats {
  position: absolute;
  bottom: 3rem;
  right: 0;
  z-index: 2;
  display: flex;
  gap: 3rem;
}
.stat-item { text-align: center; }
.stat-num {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--champagne);
  display: block;
  line-height: 1;
}
.stat-label {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--light-gray);
  margin-top: 0.3rem;
}

/* ============ 服务卡片 ============ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5px;
  background: rgba(201,169,110,0.1);
}
.service-card {
  background: var(--deep-gray);
  padding: 2.5rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--champagne);
  transition: var(--transition);
}
.service-card:hover::before { height: 100%; }
.service-card:hover { background: var(--dark-gray); }
.service-icon {
  width: 48px;
  height: 48px;
  border: 1px solid var(--champagne);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.2rem;
  color: var(--champagne);
}
.service-card h3 { font-size: 1.1rem; margin-bottom: 0.75rem; }
.service-card p { font-size: 0.9rem; color: var(--light-gray); margin-bottom: 1.25rem; }
.service-link {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--champagne);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.service-link::after { content: '→'; transition: var(--transition); }
.service-link:hover::after { transform: translateX(4px); }

/* ============ 流程步骤 ============ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  counter-reset: step;
}
.step-item {
  position: relative;
  padding-top: 1rem;
}
.step-num {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  color: rgba(201,169,110,0.15);
  line-height: 1;
  margin-bottom: 1rem;
  font-weight: 400;
}
.step-item h4 { color: var(--white); margin-bottom: 0.5rem; }
.step-item p { font-size: 0.9rem; color: var(--light-gray); }

/* ============ 视频卡片 ============ */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.video-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  cursor: pointer;
  background: var(--deep-gray);
}
.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(201,169,110,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: var(--transition);
}
.video-card:hover .play-circle { transform: scale(1); }
.play-icon {
  width: 0;
  height: 0;
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  border-left: 20px solid var(--black);
  margin-left: 4px;
}
.video-duration {
  position: absolute;
  bottom: 0.5rem;
  right: 0.5rem;
  background: rgba(0,0,0,0.8);
  color: var(--pale-gray);
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
}
.video-info {
  padding: 1.25rem;
}
.video-tag {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--champagne);
  margin-bottom: 0.5rem;
  display: block;
}
.video-title {
  font-size: 0.95rem;
  color: var(--white);
  margin-bottom: 0.75rem;
  line-height: 1.5;
  font-family: var(--font-sans);
  font-weight: 500;
}
.video-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--light-gray);
}
.video-meta span { display: flex; align-items: center; gap: 0.3rem; }

/* ============ 评价 ============ */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
.review-card {
  background: var(--deep-gray);
  padding: 2rem;
  border-radius: var(--radius);
  border-top: 2px solid var(--champagne);
  transition: var(--transition);
}
.review-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.review-stars { color: var(--champagne); font-size: 0.9rem; margin-bottom: 1rem; letter-spacing: 0.1em; }
.review-text {
  font-size: 0.9rem;
  color: var(--pale-gray);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  font-style: italic;
}
.review-author { display: flex; align-items: center; gap: 0.75rem; }
.review-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--champagne-dark), var(--champagne));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--black);
  font-weight: 600;
  flex-shrink: 0;
}
.review-name { font-size: 0.9rem; color: var(--white); font-weight: 500; }
.review-role { font-size: 0.75rem; color: var(--light-gray); }

/* ============ 案例 ============ */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}
.case-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
}
.case-card img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.case-card:hover img { transform: scale(1.05); }
.case-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.9));
  padding: 2rem 1.5rem 1.5rem;
  transform: translateY(20px);
  transition: var(--transition);
}
.case-card:hover .case-overlay { transform: translateY(0); }
.case-tag {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--champagne);
  margin-bottom: 0.5rem;
  display: block;
}
.case-title { font-size: 1rem; color: var(--white); }

/* ============ FAQ ============ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid rgba(201,169,110,0.15);
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.5rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  text-align: left;
  color: var(--white);
  font-size: 1rem;
  font-family: var(--font-sans);
  gap: 1rem;
}
.faq-question:hover { color: var(--champagne); }
.faq-icon {
  width: 24px;
  height: 24px;
  border: 1px solid var(--champagne);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
  color: var(--champagne);
  transition: var(--transition);
}
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 0 1.5rem;
  color: var(--light-gray);
  font-size: 0.95rem;
  line-height: 1.9;
}
.faq-item.active .faq-answer { max-height: 300px; }

/* ============ 预约表单 ============ */
.booking-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.booking-info h2 { margin-bottom: 1rem; }
.booking-info p { color: var(--light-gray); margin-bottom: 2rem; }
.booking-features { display: flex; flex-direction: column; gap: 1rem; }
.booking-feature {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.feature-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--champagne);
  margin-top: 0.6rem;
  flex-shrink: 0;
}
.feature-text { font-size: 0.9rem; color: var(--pale-gray); }
.booking-form { background: var(--deep-gray); padding: 2.5rem; border-radius: var(--radius); }
.form-group { margin-bottom: 1.25rem; }
.form-label {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--light-gray);
  margin-bottom: 0.5rem;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(201,169,110,0.2);
  color: var(--pale-gray);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  font-family: var(--font-sans);
  outline: none;
  border-radius: var(--radius);
  transition: var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--champagne);
  background: rgba(201,169,110,0.05);
}
.form-select { cursor: pointer; }
.form-select option { background: var(--deep-gray); }
.form-textarea { resize: vertical; min-height: 100px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* ============ 地址 ============ */
.address-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.address-map {
  background: var(--deep-gray);
  height: 320px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(201,169,110,0.15);
  position: relative;
  overflow: hidden;
}
.map-placeholder {
  text-align: center;
  color: var(--light-gray);
}
.map-icon { font-size: 2.5rem; margin-bottom: 0.5rem; color: var(--champagne); }
.contact-items { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-item { display: flex; align-items: flex-start; gap: 1rem; }
.contact-icon {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(201,169,110,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--champagne);
  flex-shrink: 0;
}
.contact-label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--light-gray);
  margin-bottom: 0.25rem;
}
.contact-value { font-size: 0.95rem; color: var(--pale-gray); }

/* ============ 页脚 ============ */
.site-footer {
  background: var(--black);
  border-top: 1px solid rgba(201,169,110,0.15);
  padding: 4rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand p {
  font-size: 0.85rem;
  color: var(--light-gray);
  margin-top: 1rem;
  line-height: 1.8;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.footer-logo img {
  width: 36px;
  height: 36px;
  object-fit: cover;
  border-radius: 50%;
}
.footer-logo-text {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--white);
}
.footer-logo-text span { color: var(--champagne); }
.footer-col h5 {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--champagne);
  margin-bottom: 1.25rem;
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col ul a {
  font-size: 0.85rem;
  color: var(--light-gray);
  transition: var(--transition);
}
.footer-col ul a:hover { color: var(--champagne); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-copy { font-size: 0.8rem; color: var(--light-gray); }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { font-size: 0.8rem; color: var(--light-gray); }
.footer-links a:hover { color: var(--champagne); }
.update-time { font-size: 0.75rem; color: var(--mid-gray); margin-top: 0.25rem; }

/* ============ 面包屑 ============ */
.breadcrumb {
  padding: 1rem 0;
  font-size: 0.8rem;
  color: var(--light-gray);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.breadcrumb a { color: var(--light-gray); }
.breadcrumb a:hover { color: var(--champagne); }
.breadcrumb-sep { color: var(--mid-gray); }
.breadcrumb-current { color: var(--champagne); }

/* ============ 内页头部 ============ */
.page-hero {
  padding: 8rem 0 4rem;
  background: linear-gradient(180deg, var(--deep-gray) 0%, var(--black) 100%);
  border-bottom: 1px solid rgba(201,169,110,0.1);
}
.page-hero h1 { margin-bottom: 0.75rem; }
.page-hero p { color: var(--light-gray); max-width: 600px; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .booking-wrap, .address-wrap { grid-template-columns: 1fr; gap: 2rem; }
}
@media (max-width: 768px) {
  .nav-menu { display: none; }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--black);
    padding: 2rem 1.5rem;
    border-bottom: 1px solid rgba(201,169,110,0.15);
    gap: 1.25rem;
    z-index: 999;
  }
  .nav-toggle { display: flex; }
  .hero { min-height: 90vh; }
  .hero-stats { position: static; margin-top: 3rem; justify-content: flex-start; gap: 2rem; }
  .services-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr 1fr; }
  .video-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .form-row { grid-template-columns: 1fr; }
  .section { padding: 3.5rem 0; }
}
@media (max-width: 480px) {
  .process-steps { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { text-align: center; }
}

/* ============ 动画 ============ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-in {
  animation: fadeInUp 0.7s ease forwards;
}
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

/* ============ 滚动条 ============ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--black); }
::-webkit-scrollbar-thumb { background: var(--mid-gray); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--champagne-dark); }

/* ============ 选中文字 ============ */
::selection { background: var(--champagne); color: var(--black); }