/* ============================================
   今日大赛51 - 游戏化深色橙主题
   ============================================ */

:root {
  --color-orange: #e67e22;
  --color-orange-light: #f39c12;
  --color-orange-bright: #ff8c1a;
  --color-dark: #1a1a1a;
  --color-dark-light: #262626;
  --color-dark-card: #2a2a2a;
  --color-darker: #0d0d0d;
  --color-white: #ffffff;
  --color-gray: #b0b0b0;
  --color-gray-dark: #707070;
  --color-green: #2ecc71;
  --color-red: #e74c3c;
  --color-blue: #3498db;
  --font-body: 'Noto Sans SC', sans-serif;
  --font-title: 'ZCOOL KuaiLe', cursive;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-dark);
  color: var(--color-white);
  line-height: 1.7;
  font-size: 15px;
}

a {
  color: var(--color-orange-light);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--color-orange-bright);
}

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

/* ========== 顶部导航栏 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 13, 13, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 3px solid var(--color-orange);
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 24px;
}

.logo {
  font-family: var(--font-title);
  font-size: 28px;
  color: var(--color-orange);
  letter-spacing: 1px;
  text-shadow: 0 0 15px rgba(230, 126, 34, 0.5);
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo .logo-icon {
  background: linear-gradient(135deg, var(--color-orange), var(--color-orange-light));
  color: var(--color-dark);
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: bold;
}

.logo span {
  color: var(--color-white);
  font-size: 14px;
}

.header-stats {
  display: flex;
  gap: 24px;
  font-size: 13px;
}

.header-stat {
  color: var(--color-gray);
}

.header-stat strong {
  color: var(--color-orange-light);
  font-size: 16px;
}

.main-nav {
  background: var(--color-darker);
  border-top: 1px solid rgba(230, 126, 34, 0.15);
}

.nav-list {
  display: flex;
  list-style: none;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  flex-wrap: wrap;
}

.nav-list li a {
  display: block;
  padding: 14px 24px;
  color: var(--color-gray);
  font-size: 14px;
  font-weight: 500;
  position: relative;
  transition: all 0.3s ease;
  border-bottom: 3px solid transparent;
}

.nav-list li a:hover,
.nav-list li a.active {
  color: var(--color-orange-bright);
  border-bottom-color: var(--color-orange);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-orange);
  font-size: 26px;
  cursor: pointer;
}

/* ========== 主容器 ========== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 24px;
}

.page-title {
  font-family: var(--font-title);
  font-size: 34px;
  color: var(--color-orange-bright);
  margin-bottom: 8px;
}

.page-subtitle {
  color: var(--color-gray);
  font-size: 14px;
  margin-bottom: 32px;
}

.section-title {
  font-family: var(--font-title);
  font-size: 24px;
  color: var(--color-white);
  margin: 40px 0 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-title::before {
  content: '';
  width: 5px;
  height: 24px;
  background: linear-gradient(180deg, var(--color-orange), var(--color-orange-light));
  border-radius: 3px;
}

.section-title .badge {
  background: var(--color-orange);
  color: var(--color-dark);
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 4px;
  font-family: var(--font-body);
  font-weight: bold;
}

/* ========== 首页 Hero ========== */
.hero {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 32px;
  min-height: 380px;
  background: linear-gradient(135deg, rgba(230, 126, 34, 0.3), rgba(26, 26, 26, 0.9)),
              url('https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=esports%20tournament%20arena%20crowd%20lights&image_size=landscape_16_9') center/cover;
  display: flex;
  align-items: center;
  border: 1px solid rgba(230, 126, 34, 0.3);
}

.hero-content {
  padding: 48px;
  max-width: 600px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-orange);
  color: var(--color-dark);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: bold;
  margin-bottom: 16px;
}

.hero-tag::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-dark);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.4); }
}

.hero-content h1 {
  font-family: var(--font-title);
  font-size: 38px;
  color: var(--color-white);
  margin-bottom: 16px;
  line-height: 1.3;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.hero-content p {
  color: var(--color-gray);
  margin-bottom: 24px;
  font-size: 16px;
}

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

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  border: none;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-orange), var(--color-orange-light));
  color: var(--color-dark);
  box-shadow: 0 4px 15px rgba(230, 126, 34, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(230, 126, 34, 0.6);
  color: var(--color-dark);
}

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-gray-dark);
}

.btn-secondary:hover {
  border-color: var(--color-orange);
  color: var(--color-orange-light);
}

/* ========== 双栏布局 ========== */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
}

/* ========== 赛事卡片 ========== */
.match-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.match-card {
  background: var(--color-dark-card);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(230, 126, 34, 0.15);
  transition: all 0.3s ease;
  position: relative;
}

.match-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-orange);
  box-shadow: 0 10px 30px rgba(230, 126, 34, 0.2);
}

.match-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--color-darker);
  border-bottom: 1px solid rgba(230, 126, 34, 0.1);
}

.match-game {
  color: var(--color-orange-light);
  font-size: 13px;
  font-weight: bold;
}

.match-time {
  color: var(--color-gray);
  font-size: 13px;
}

.match-body {
  padding: 24px 16px;
}

.match-teams {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.team-info {
  text-align: center;
}

.team-logo {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  margin: 0 auto 8px;
  background-size: cover;
  background-position: center;
  border: 2px solid rgba(230, 126, 34, 0.3);
}

.team-name {
  font-size: 14px;
  color: var(--color-white);
  font-weight: bold;
}

.team-score {
  font-family: var(--font-title);
  font-size: 28px;
  color: var(--color-orange-bright);
  text-align: center;
}

.vs {
  font-family: var(--font-title);
  font-size: 18px;
  color: var(--color-gray-dark);
  text-align: center;
}

.match-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: rgba(230, 126, 34, 0.05);
  border-top: 1px solid rgba(230, 126, 34, 0.1);
}

.match-prize {
  color: var(--color-orange-light);
  font-size: 13px;
  font-weight: bold;
}

/* 状态标签 */
.status-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.status-live {
  background: var(--color-red);
  color: var(--color-white);
}

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

.status-upcoming {
  background: rgba(52, 152, 219, 0.2);
  color: var(--color-blue);
}

.status-ended {
  background: rgba(112, 112, 112, 0.2);
  color: var(--color-gray-dark);
}

/* ========== 排行榜表格 ========== */
.leaderboard {
  background: var(--color-dark-card);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(230, 126, 34, 0.2);
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
}

.leaderboard-table th {
  background: var(--color-darker);
  color: var(--color-orange-light);
  padding: 14px 16px;
  text-align: left;
  font-size: 13px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: 2px solid var(--color-orange);
}

.leaderboard-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(230, 126, 34, 0.08);
  color: var(--color-gray);
  font-size: 14px;
}

.leaderboard-table tr:hover td {
  background: rgba(230, 126, 34, 0.05);
}

.leaderboard-table tr:last-child td {
  border-bottom: none;
}

.rank-cell {
  font-family: var(--font-title);
  font-size: 22px;
  color: var(--color-gray-dark);
  text-align: center;
  width: 50px;
}

.leaderboard-table tr:nth-child(1) .rank-cell {
  color: #ffd700;
}

.leaderboard-table tr:nth-child(2) .rank-cell {
  color: #c0c0c0;
}

.leaderboard-table tr:nth-child(3) .rank-cell {
  color: #cd7f32;
}

.team-cell {
  display: flex;
  align-items: center;
  gap: 12px;
}

.team-cell-logo {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  border: 1px solid rgba(230, 126, 34, 0.3);
  flex-shrink: 0;
}

.team-cell-name {
  color: var(--color-white);
  font-weight: bold;
}

.winrate-bar {
  display: inline-block;
  width: 60px;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
  vertical-align: middle;
  margin-right: 8px;
}

.winrate-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-orange), var(--color-orange-light));
  border-radius: 3px;
}

.points-cell {
  color: var(--color-orange-bright);
  font-weight: bold;
  font-size: 16px;
}

/* ========== 侧边栏 ========== */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.widget {
  background: var(--color-dark-card);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid rgba(230, 126, 34, 0.15);
}

.widget-title {
  font-family: var(--font-title);
  font-size: 20px;
  color: var(--color-orange-bright);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(230, 126, 34, 0.2);
}

/* 迷你排行榜 */
.mini-rank {
  list-style: none;
}

.mini-rank li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(230, 126, 34, 0.08);
}

.mini-rank li:last-child {
  border-bottom: none;
}

.mini-rank-num {
  font-family: var(--font-title);
  font-size: 20px;
  color: var(--color-orange);
  width: 28px;
  text-align: center;
}

.mini-rank li:nth-child(1) .mini-rank-num {
  color: #ffd700;
}

.mini-rank-logo {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
}

.mini-rank-info {
  flex: 1;
}

.mini-rank-info h4 {
  color: var(--color-white);
  font-size: 14px;
  margin-bottom: 2px;
}

.mini-rank-info span {
  color: var(--color-gray-dark);
  font-size: 12px;
}

.mini-rank-points {
  color: var(--color-orange-light);
  font-weight: bold;
  font-size: 14px;
}

/* 热门游戏导航 */
.game-nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.game-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  background: var(--color-darker);
  border-radius: 8px;
  border: 1px solid rgba(230, 126, 34, 0.1);
  transition: all 0.3s ease;
  cursor: pointer;
}

.game-item:hover {
  border-color: var(--color-orange);
  transform: translateX(4px);
}

.game-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
}

.game-name {
  color: var(--color-white);
  font-size: 13px;
  font-weight: bold;
}

.game-count {
  color: var(--color-gray-dark);
  font-size: 11px;
}

/* ========== 时间轴赛事列表 ========== */
.schedule-list {
  position: relative;
  padding-left: 40px;
}

.schedule-list::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-orange), transparent);
}

.schedule-item {
  position: relative;
  margin-bottom: 24px;
}

.schedule-item::before {
  content: '';
  position: absolute;
  left: -33px;
  top: 24px;
  width: 16px;
  height: 16px;
  background: var(--color-orange);
  border: 3px solid var(--color-dark);
  border-radius: 50%;
}

.schedule-item.live::before {
  background: var(--color-red);
  box-shadow: 0 0 12px var(--color-red);
  animation: pulse 1.5s infinite;
}

.schedule-card {
  background: var(--color-dark-card);
  border-radius: 10px;
  padding: 20px;
  border: 1px solid rgba(230, 126, 34, 0.15);
  transition: all 0.3s ease;
}

.schedule-card:hover {
  border-color: var(--color-orange);
}

.schedule-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.schedule-time {
  font-family: var(--font-title);
  font-size: 20px;
  color: var(--color-orange-bright);
}

.schedule-game-tag {
  background: rgba(230, 126, 34, 0.15);
  color: var(--color-orange-light);
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: bold;
}

.schedule-matchup {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.schedule-team {
  display: flex;
  align-items: center;
  gap: 12px;
}

.schedule-team.right {
  flex-direction: row-reverse;
  text-align: right;
}

.schedule-team-logo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  border: 2px solid rgba(230, 126, 34, 0.3);
  flex-shrink: 0;
}

.schedule-team-name {
  color: var(--color-white);
  font-weight: bold;
  font-size: 15px;
}

.schedule-vs {
  font-family: var(--font-title);
  font-size: 22px;
  color: var(--color-orange);
}

.schedule-score {
  font-family: var(--font-title);
  font-size: 24px;
  color: var(--color-white);
}

.schedule-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(230, 126, 34, 0.1);
}

.schedule-info {
  color: var(--color-gray-dark);
  font-size: 13px;
}

.live-link {
  color: var(--color-orange-light);
  font-size: 13px;
  font-weight: bold;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ========== 归档分组 ========== */
.archive-group {
  margin-bottom: 40px;
}

.archive-month {
  font-family: var(--font-title);
  font-size: 24px;
  color: var(--color-orange-bright);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.archive-month::before {
  content: '';
  width: 8px;
  height: 24px;
  background: var(--color-orange);
  border-radius: 4px;
}

.archive-list {
  background: var(--color-dark-card);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(230, 126, 34, 0.15);
}

.archive-row {
  display: grid;
  grid-template-columns: 100px 1fr 2fr auto auto;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(230, 126, 34, 0.08);
  transition: background 0.3s ease;
}

.archive-row:hover {
  background: rgba(230, 126, 34, 0.05);
}

.archive-row:last-child {
  border-bottom: none;
}

.archive-date {
  color: var(--color-orange-light);
  font-size: 14px;
  font-weight: bold;
}

.archive-game {
  color: var(--color-gray);
  font-size: 13px;
}

.archive-matchup {
  color: var(--color-white);
  font-size: 14px;
}

.archive-result {
  font-family: var(--font-title);
  color: var(--color-orange-bright);
  font-size: 16px;
}

/* ========== 报名表单 ========== */
.form-container {
  background: var(--color-dark-card);
  border-radius: 12px;
  padding: 40px;
  border: 1px solid rgba(230, 126, 34, 0.2);
  max-width: 750px;
  margin: 0 auto;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

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

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

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-darker);
  border: 1px solid rgba(230, 126, 34, 0.2);
  border-radius: 8px;
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 14px;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-orange);
  box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* 报名流程 */
.signup-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 32px 0;
}

.step-card {
  background: var(--color-dark-card);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  border: 1px solid rgba(230, 126, 34, 0.15);
  position: relative;
}

.step-num {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-orange), var(--color-orange-light));
  color: var(--color-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-size: 20px;
  margin: 0 auto 16px;
}

.step-card h4 {
  color: var(--color-white);
  font-size: 15px;
  margin-bottom: 8px;
}

.step-card p {
  color: var(--color-gray);
  font-size: 13px;
}

/* 奖品展示 */
.prize-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.prize-card {
  background: var(--color-dark-card);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(230, 126, 34, 0.15);
  text-align: center;
  transition: all 0.3s ease;
}

.prize-card:hover {
  border-color: var(--color-orange);
  transform: translateY(-4px);
}

.prize-card.featured {
  border-color: var(--color-orange);
  box-shadow: 0 0 30px rgba(230, 126, 34, 0.2);
}

.prize-image {
  height: 160px;
  background-size: cover;
  background-position: center;
}

.prize-body {
  padding: 20px;
}

.prize-rank {
  font-family: var(--font-title);
  font-size: 16px;
  color: var(--color-orange-light);
  margin-bottom: 8px;
}

.prize-amount {
  font-family: var(--font-title);
  font-size: 28px;
  color: var(--color-white);
  margin-bottom: 8px;
}

.prize-desc {
  color: var(--color-gray);
  font-size: 13px;
}

/* 规则说明 */
.rules-list {
  background: var(--color-dark-card);
  border-radius: 12px;
  padding: 32px;
  border: 1px solid rgba(230, 126, 34, 0.15);
}

.rules-list ol {
  padding-left: 20px;
}

.rules-list li {
  color: var(--color-gray);
  margin-bottom: 12px;
  padding-left: 8px;
}

/* ========== 关于我们 ========== */
.about-section {
  background: var(--color-dark-card);
  border-radius: 12px;
  padding: 36px;
  margin-bottom: 24px;
  border: 1px solid rgba(230, 126, 34, 0.15);
}

.about-section h3 {
  font-family: var(--font-title);
  font-size: 22px;
  color: var(--color-orange-bright);
  margin-bottom: 16px;
}

.about-section p {
  color: var(--color-gray);
  margin-bottom: 14px;
}

/* 数据展示 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 24px 0;
}

.stat-box {
  background: var(--color-dark-card);
  border-radius: 12px;
  padding: 28px 20px;
  text-align: center;
  border: 1px solid rgba(230, 126, 34, 0.15);
}

.stat-number {
  font-family: var(--font-title);
  font-size: 36px;
  background: linear-gradient(135deg, var(--color-orange), var(--color-orange-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-label {
  color: var(--color-gray);
  font-size: 13px;
}

/* 合作游戏 */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.partner-card {
  background: var(--color-darker);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  border: 1px solid rgba(230, 126, 34, 0.1);
  transition: all 0.3s ease;
}

.partner-card:hover {
  border-color: var(--color-orange);
  transform: translateY(-3px);
}

.partner-logo {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  margin: 0 auto 12px;
  background-size: cover;
  background-position: center;
}

.partner-name {
  color: var(--color-white);
  font-size: 14px;
  font-weight: bold;
  margin-bottom: 4px;
}

.partner-type {
  color: var(--color-orange-light);
  font-size: 12px;
}

/* 赛事体系 */
.system-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.system-card {
  background: var(--color-darker);
  border-radius: 10px;
  padding: 24px;
  border: 1px solid rgba(230, 126, 34, 0.1);
  border-left: 4px solid var(--color-orange);
}

.system-card h4 {
  color: var(--color-orange-bright);
  font-size: 18px;
  margin-bottom: 12px;
}

.system-card p {
  color: var(--color-gray);
  font-size: 14px;
}

/* 联系卡片 */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.contact-card {
  background: var(--color-dark-card);
  border-radius: 12px;
  padding: 28px;
  border: 1px solid rgba(230, 126, 34, 0.15);
  text-align: center;
}

.contact-card-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-orange), var(--color-orange-light));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--color-dark);
  margin: 0 auto 16px;
}

.contact-card h4 {
  color: var(--color-white);
  font-size: 18px;
  margin-bottom: 12px;
}

.contact-card p {
  color: var(--color-gray);
  font-size: 14px;
  margin-bottom: 8px;
}

.contact-card .highlight {
  color: var(--color-orange-light);
  font-weight: bold;
}

.social-links {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-top: 24px;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  background: var(--color-darker);
  border-radius: 50%;
  color: var(--color-orange-light);
  font-size: 18px;
  border: 1px solid rgba(230, 126, 34, 0.2);
  transition: all 0.3s ease;
}

.social-links a:hover {
  background: var(--color-orange);
  color: var(--color-dark);
  transform: translateY(-3px);
}

/* ========== 分页 ========== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}

.pagination a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  padding: 0 14px;
  background: var(--color-dark-card);
  border: 1px solid rgba(230, 126, 34, 0.2);
  border-radius: 8px;
  color: var(--color-gray);
  transition: all 0.3s ease;
}

.pagination a:hover,
.pagination a.active {
  background: var(--color-orange);
  color: var(--color-dark);
  border-color: var(--color-orange);
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--color-darker);
  border-top: 3px solid var(--color-orange);
  padding: 50px 24px 24px;
  margin-top: 60px;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-col h4 {
  color: var(--color-orange-bright);
  margin-bottom: 16px;
  font-size: 17px;
}

.footer-col p {
  color: var(--color-gray);
  font-size: 14px;
  margin-bottom: 10px;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col ul li a {
  color: var(--color-gray);
  font-size: 14px;
}

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

.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid rgba(230, 126, 34, 0.15);
  text-align: center;
  color: var(--color-gray-dark);
  font-size: 13px;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .main-layout {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-top {
    flex-direction: column;
    gap: 12px;
  }

  .header-stats {
    display: none;
  }

  .menu-toggle {
    display: block;
    position: absolute;
    top: 14px;
    right: 24px;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    padding: 0;
  }

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

  .nav-list li a {
    padding: 12px 24px;
    border-bottom: 1px solid rgba(230, 126, 34, 0.1);
  }

  .hero-content {
    padding: 32px 24px;
  }

  .hero-content h1 {
    font-size: 26px;
  }

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

  .signup-steps {
    grid-template-columns: 1fr 1fr;
  }

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

  .archive-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .page-title {
    font-size: 26px;
  }

  .container {
    padding: 24px 16px;
  }
}

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

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

  .signup-steps {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
  }

  .logo {
    font-size: 22px;
  }
}