/* ==================== */
/* CSS 变量定义 */
/* ==================== */
:root {
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: #e0e7ff;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --bg-white: #ffffff;
  --bg-gray: #fff; /* #f9fafb; */
  --bg-light: #f3f4f6;
  --border-color: #e5e7eb;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --success-color: #10b981;
  --success-hover: #059669;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-gray);
}

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

/* ==================== */
/* 导航栏 */
/* ==================== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 32px;
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
}

/* 桌面端隐藏 nav-top，直接用 nav-left/center/right 布局 */
.nav-top {
  display: contents;
}

.nav-left {
  display: flex;
  align-items: center;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary-color), #818cf8);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
}

.nav-center {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 16px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-light);
}

/* 当前页导航高亮：蓝色背景，其他为默认 */
.nav-link.active {
  color: var(--primary-color);
  background-color: var(--primary-light);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

/* 导航里带 btn-primary 的项（如 VIP）：选中时保持白字+深蓝底 */
.nav-link.btn-primary.active {
  color: #fff;
  background-color: var(--primary-hover);
}
.nav-link.btn-primary.active::after {
  display: none;
}

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

/* 导航栏积分显示 */
.nav-points-display {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border: 1px solid #f59e0b;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 14px;
  font-weight: 600;
  color: #b45309;
}

.nav-points-display:hover {
  background: linear-gradient(135deg, #fde68a 0%, #fcd34d 100%);
  transform: scale(1.02);
}

.nav-points-display .points-icon {
  font-size: 14px;
}

.nav-points-display .points-value {
  min-width: 24px;
  text-align: center;
}

/* 全站主内容区：导航栏下方统一间距，避免各页“顶栏下方这块”位置不一致 */
.page-main {
  padding-top: 24px;
  min-height: calc(100vh - 64px - 100px);
}

/* 内容页统一容器：题库/抽题/模拟面试/VIP 共用 */
.content-container {
  max-width: 1000px;
  margin: 0 auto 40px;
  padding: 0 24px;
}

/* 内容页标题区（与首页 tools-section 一致） */
.content-container .section-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.content-container .section-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ==================== */
/* 按钮 */
/* ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);

}

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


.form-input-group {
  display: flex;
  gap: 8px; /* 输入框和按钮之间的间距，可按需调整 */
}

.form-input-group .form-input {
  flex: 1;
}

.form-input-group .btn {
  flex: 1;
}


.btn-secondary {
  background-color: var(--bg-light);
  color: var(--text-primary);
}

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

.btn-danger {
  background-color: #ef4444;
  color: white;
}

.btn-danger:hover {
  background-color: #dc2626;
}

.btn-block {
  width: 100%;
}

/* ==================== */
/* 首页 Hero */
/* ==================== */
.hero {
  background: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%);
  color: white;
  padding: 100px 0 80px;
  text-align: center;
  position: relative;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to bottom, rgba(99,102,241,0.3), var(--bg-gray));
}

.hero-title {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin: 0 auto;
}

/* ==================== */
/* 首页工具列表 */
/* ==================== */
.tools-section {
  padding: 60px 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: 12px;
}

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

.tools-category {
  margin-bottom: 48px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.tool-card {
  background-color: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: 24px;
  transition: all 0.3s ease;
  cursor: pointer;
}

.tool-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.tool-card-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary-light), #c7d2fe);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}

.tool-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.tool-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.5;
}

.tool-card-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--primary-color);
  font-size: 14px;
  font-weight: 500;
}

.tool-card-btn::after {
  content: '→';
  transition: transform 0.2s ease;
}

.tool-card:hover .tool-card-btn::after {
  transform: translateX(4px);
}

/* ==================== */
/* 表单 */
/* ==================== */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.form-label .required {
  color: #ef4444;
  margin-left: 2px;
}

.form-input,
.form-select {
  width: 100%;
  padding: 12px 16px;
  font-size: 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-white);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

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

.form-input::placeholder {
  color: var(--text-muted);
}

.form-input.error {
  border-color: #ef4444;
}

.form-error {
  color: #ef4444;
  font-size: 12px;
  margin-top: 6px;
}

.form-hint {
  color: var(--text-muted);
  font-size: 12px;
  margin-top: 6px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

/* ==================== */
/* 卡片 */
/* ==================== */
.card {
  background-color: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.card-body {
  padding: 24px;
}

/* ==================== */
/* 登录注册页 */
/* ==================== */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%);
  box-sizing: border-box;
}

/* 带导航时的登录/注册：与内容页统一，使用 page-main + content-container + card */
.auth-page.auth-page-with-nav {
  min-height: calc(100vh - 64px - 100px);
  padding: 48px 24px 60px;
  background: var(--bg-gray);
}

/* 登录/注册表单窄栏居中（与全局 card 一致） */
.auth-form-wrap {
  max-width: 420px;
  margin: 0 auto;
}

.auth-form-wrap .card {
  margin-bottom: 0;
}

.auth-form-wrap .section-title {
  margin-bottom: 6px;
}

.auth-form-wrap .section-subtitle {
  margin-bottom: 24px;
}

/* 登录/注册页按钮与全局 .btn 一致 */
.auth-form-wrap .btn,
.auth-form-wrap button[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  background-color: var(--primary-color);
  color: #fff;
}

.auth-form-wrap .btn:hover,
.auth-form-wrap button[type="submit"]:hover {
  background-color: var(--primary-hover);
  box-shadow: var(--shadow-md);
}

.auth-form-wrap .btn-block {
  width: 100%;
}

.auth-footer {
  text-align: center;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  font-size: 14px;
  color: var(--text-secondary);
}

.auth-footer a {
  color: var(--primary-color);
  font-weight: 500;
  margin-left: 4px;
}

.auth-back-home {
  display: block;
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}

.auth-back-home:hover {
  color: var(--primary-color);
}

/* ==================== */
/* 计算器页 */
/* ==================== */
.calculator-page {
  min-height: calc(100vh - 64px);
  padding: 40px 32px;
}

.calculator-container {
  max-width: 1000px;
  margin: 0 auto;
}

.calculator-header {
  margin-bottom: 32px;
}

.calculator-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.calculator-desc {
  font-size: 15px;
  color: var(--text-secondary);
}

.calculator-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.calculator-form,
.calculator-result {
  background-color: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: 24px;
}

/* 计算结果 */
.result-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}

.result-empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.result-content {
  display: none;
}

.result-content.show {
  display: block;
}

.result-item {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

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

.result-label {
  color: var(--text-secondary);
  font-size: 14px;
}

.result-value {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 14px;
}

.result-highlight {
  background: linear-gradient(135deg, var(--primary-light), #c7d2fe);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  margin-top: 20px;
}

.result-highlight-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.result-highlight-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary-color);
}

.result-actions {
  margin-top: 24px;
  display: flex;
  gap: 12px;
}

/* ==================== */
/* 控制台页 */
/* ==================== */
.dashboard-page {
  display: flex;
  min-height: calc(100vh - 64px);
}

.dashboard-sidebar {
  width: 240px;
  background-color: var(--bg-white);
  border-right: 1px solid var(--border-color);
  padding: 24px 16px;
  flex-shrink: 0;
}

.sidebar-menu {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  cursor: pointer;
}

.sidebar-item:hover {
  background-color: var(--bg-light);
  color: var(--text-primary);
}

.sidebar-item.active {
  background-color: var(--primary-light);
  color: var(--primary-color);
}

.dashboard-content {
  flex: 1;
  padding: 32px;
  background-color: var(--bg-gray);
  overflow-y: auto;
}

.dashboard-header {
  margin-bottom: 24px;
}

.dashboard-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.dashboard-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
}

/* 记录表格 */
.records-alert {
  background-color: #fef3c7;
  border: 1px solid #f59e0b;
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.records-alert-text {
  color: #92400e;
  font-size: 14px;
}

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

.records-table th,
.records-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.records-table th {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 13px;
}

.records-table td {
  color: var(--text-primary);
  font-size: 14px;
}

.records-actions {
  display: flex;
  gap: 8px;
}

.records-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

/* VIP 状态 */
.vip-status {
  background: linear-gradient(135deg, var(--primary-light), #c7d2fe);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
  text-align: center;
}

.vip-status-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.vip-status-value {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary-color);
}

/* VIP 套餐 */
.vip-plans {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.vip-plan {
  background-color: var(--bg-white);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s ease;
}

.vip-plan:hover {
  border-color: var(--primary-color);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.vip-plan.recommended {
  border-color: var(--primary-color);
  position: relative;
}

.vip-plan.recommended::before {
  content: '推荐';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--primary-color);
  color: white;
  padding: 4px 16px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.vip-plan-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.vip-plan-price {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 4px;
}

.vip-plan-period {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.vip-plan-features {
  text-align: left;
  margin-bottom: 24px;
}

.vip-plan-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.vip-plan-feature::before {
  content: '✓';
  color: #10b981;
  font-weight: 600;
}

/* ==================== */
/* 模态框 */
/* ==================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  overflow-y: auto;
  padding: 20px;
  -webkit-overflow-scrolling: touch;
}

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

.modal {
  background-color: var(--bg-white);
  border-radius: var(--radius-xl);
  max-width: 440px;
  width: 100%;
  padding: 32px;
  transform: scale(0.9);
  transition: transform 0.3s ease;
  max-height: 90vh;
  overflow-y: auto;
  margin: auto;
}

.modal-overlay.show .modal {
  transform: scale(1);
}

.modal-header {
  text-align: center;
  margin-bottom: 24px;
}

.modal-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.modal-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.modal-desc {
  font-size: 14px;
  color: var(--text-secondary);
}

.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* 导航栏登录按钮 */
.nav-login-btn {
  padding: 8px 20px !important;
  font-size: 14px !important;
  border-radius: 20px !important;
  font-weight: 500 !important;
}

/* 登录弹窗样式 */
.modal.modal-login {
  width: 400px;
  max-width: 90vw;
  padding: 0;
  overflow: visible;
}

.modal.modal-login .modal-auth-tabs {
  background: linear-gradient(135deg, #8b9dc3 0%, #a8b5d1 100%);
  margin-bottom: 0;
  border-bottom: none;
  position: relative;
}

.modal.modal-login .modal-auth-tab {
  color: rgba(255, 255, 255, 0.85);
  border-bottom: none;
  padding: 16px 12px;
  font-size: 16px;
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
}

.modal.modal-login .modal-auth-tab:hover {
  color: #fff;
}

.modal.modal-login .modal-auth-tab.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary-color) 0%, #667eea 100%);
  font-weight: 600;
}

.modal.modal-login .modal-auth-pane {
  padding: 24px;
}

.modal.modal-login .modal-close-btn {
  position: absolute;
  top: -12px;
  right: -12px;
  width: 32px;
  height: 32px;
  border: none;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 50%;
  font-size: 20px;
  color: #666;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.modal.modal-login .modal-close-btn:hover {
  background: #fff;
  color: #333;
  transform: rotate(90deg);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

/* 忘记密码面板样式 */
.modal-forgot-header {
  margin-bottom: 20px;
}

.modal-back-link {
  display: inline-block;
  color: var(--primary-color);
  font-size: 14px;
  margin-bottom: 12px;
  cursor: pointer;
}

.modal-back-link:hover {
  text-decoration: underline;
}

.modal-forgot-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-forgot-hint {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  padding: 12px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
}

.modal-forgot-tabs {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.modal-forgot-tab {
  font-size: 14px;
  color: var(--text-secondary);
  cursor: pointer;
  padding-bottom: 8px;
  border-bottom: 2px solid transparent;
  margin-bottom: -13px;
  transition: all 0.2s;
}

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

.modal-forgot-tab.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
  font-weight: 500;
}

.modal-login-form .form-group { margin-bottom: 16px; }
.modal-login-form .form-group:last-of-type { margin-bottom: 20px; }
.modal-login-footer {
  text-align: center;
  margin-top: 16px;
  font-size: 14px;
  color: var(--text-secondary);
}
.modal-login-footer a { color: var(--primary-color); cursor: pointer; font-weight: 500; }
.modal-login-footer a:hover { text-decoration: underline; }
.form-error { font-size: 12px; color: #ef4444; margin-top: 4px; }
.modal-auth-tabs { display: flex; gap: 0; margin-bottom: 20px; border-bottom: 1px solid var(--border-color); }
.modal-auth-tab { flex: 1; padding: 12px; text-align: center; font-size: 15px; font-weight: 500; color: var(--text-secondary); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.modal-auth-tab:hover { color: var(--primary-color); }
.modal-auth-tab.active { color: var(--primary-color); border-bottom-color: var(--primary-color); }
.modal-auth-pane { display: none; }
.modal-auth-pane.active { display: block; }
.modal-login-form .form-input-group { display: flex; gap: 8px; }
.modal-login-form .form-input-group .form-input { flex: 1; }

/* 弹窗登录分隔线和GitHub按钮 */
.modal-auth-divider {
  margin: 16px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  position: relative;
}
.modal-auth-divider::before,
.modal-auth-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: calc(50% - 20px);
  height: 1px;
  background-color: var(--border-color);
}
.modal-auth-divider::before { left: 0; }
.modal-auth-divider::after { right: 0; }
.modal-auth-divider span {
  padding: 0 12px;
  background: var(--bg-white);
  position: relative;
  z-index: 1;
}

.modal-github-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 12px;
}
.modal-github-icon {
  width: 18px;
  height: 18px;
}

/* ==================== */
/* Toast 提示 */
/* ==================== */
.toast {
  position: fixed;
  top: 80px;
  right: 20px;
  padding: 16px 24px;
  background-color: var(--bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  transform: translateX(120%);
  transition: transform 0.3s ease;
  z-index: 3000;
}

.toast.show {
  transform: translateX(0);
}

.toast-success {
  border-left: 4px solid #10b981;
}

.toast-error {
  border-left: 4px solid #ef4444;
}

.toast-warning {
  border-left: 4px solid #f59e0b;
}

.toast-info {
  border-left: 4px solid #3b82f6;
}

/* ==================== */
/* 响应式适配 */
/* ==================== */
@media (max-width: 768px) {
  /* 移动端基础字体放大 */
  body {
    font-size: 16px;
    line-height: 1.7;
  }

  /* 移动端导航栏重新布局 */
  .navbar {
    flex-direction: column;
    height: auto;
    padding: 10px 0;
    gap: 8px;
  }

  /* 移动端顶部行：Logo + 登录/注册 */
  .nav-top {
    display: flex;
    width: 100%;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
  }

  .nav-left {
    flex: 0 0 auto;
  }

  .nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 0 0 auto;
  }

  .nav-right .nav-link {
    font-size: 14px;
    padding: 6px 12px;
  }

  .nav-center {
    display: flex;
    width: 100%;
    overflow-x: auto;
    justify-content: flex-start;
    gap: 2px;
    padding: 0 12px 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .nav-center::-webkit-scrollbar {
    display: none;
  }

  /* 导航栏字体 */
  .logo {
    font-size: 16px;
  }

  .logo-icon {
    width: 28px;
    height: 28px;
    font-size: 16px;
  }

  .nav-link {
    font-size: 14px;
    padding: 6px 10px;
    white-space: nowrap;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
  }

  /* 当前激活的导航项下划线调整 */
  .nav-link.active::after {
    bottom: -2px;
    width: 20px;
    height: 2px;
  }

  .hero {
    padding: 60px 20px;
    background: linear-gradient(135deg, #6366f1 0%, #818cf8 100%);
  }

  .hero-title {
    font-size: 26px;
    line-height: 1.35;
  }

  .hero-subtitle {
    font-size: 16px;
    line-height: 1.7;
  }

  .tools-section {
    padding: 40px 16px;
  }

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

  /* 工具卡片移动端字体 */
  .tool-card {
    padding: 20px;
  }

  .tool-card-title {
    font-size: 18px;
  }

  .tool-card-desc {
    font-size: 15px;
    line-height: 1.6;
  }

  .tool-card-btn {
    font-size: 16px;
  }

  /* 按钮移动端字体 */
  .btn {
    font-size: 16px;
    padding: 12px 20px;
  }

  .btn-sm {
    font-size: 15px;
    padding: 10px 16px;
  }

  .btn-lg {
    font-size: 17px;
    padding: 14px 24px;
  }

  /* 表单移动端字体 */
  .form-label {
    font-size: 16px;
  }

  .form-input,
  .form-select {
    font-size: 16px;
    padding: 14px 16px;
  }

  .form-error,
  .form-hint {
    font-size: 14px;
  }

  /* 卡片移动端字体 */
  .card-title {
    font-size: 20px;
  }

  /* 内容区移动端字体 */
  .content-container .section-title {
    font-size: 22px;
  }

  .content-container .section-subtitle {
    font-size: 16px;
  }

  .calculator-page {
    padding: 24px 16px;
  }

  .calculator-content {
    grid-template-columns: 1fr;
  }

  .calculator-title {
    font-size: 24px;
  }

  .calculator-desc {
    font-size: 16px;
  }

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

  .dashboard-page {
    flex-direction: column;
  }

  .dashboard-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding: 16px;
  }

  .sidebar-menu {
    flex-direction: row;
    overflow-x: auto;
  }

  .sidebar-item {
    font-size: 15px;
  }

  .dashboard-content {
    padding: 24px 16px;
  }

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

  .dashboard-subtitle {
    font-size: 15px;
  }

  /* 表格移动端字体 */
  .records-table th {
    font-size: 14px;
  }

  .records-table td {
    font-size: 15px;
  }

  /* VIP移动端字体 */
  .vip-plans {
    grid-template-columns: 1fr;
  }

  .vip-plan-name {
    font-size: 20px;
  }

  .vip-plan-price {
    font-size: 32px;
  }

  .vip-plan-period {
    font-size: 15px;
  }

  .vip-plan-feature {
    font-size: 15px;
  }

  .vip-status-label {
    font-size: 15px;
  }

  .vip-status-value {
    font-size: 22px;
  }

  /* 结果区移动端字体 */
  .result-label,
  .result-value {
    font-size: 15px;
  }

  .result-highlight-label {
    font-size: 15px;
  }

  .result-highlight-value {
    font-size: 28px;
  }

  /* 模态框移动端适配 */
  .modal-overlay {
    padding: 16px;
    align-items: flex-start;
  }

  .modal {
    max-height: none;
    margin: 20px auto;
    padding: 24px 20px;
    border-radius: var(--radius-lg);
  }

  .modal-title {
    font-size: 20px;
  }

  .modal-desc {
    font-size: 15px;
  }

  .modal-header {
    margin-bottom: 20px;
  }

  .modal-icon {
    font-size: 40px;
    margin-bottom: 12px;
  }

  .modal-login-form .form-group {
    margin-bottom: 14px;
  }

  .modal-auth-tab {
    font-size: 14px;
    padding: 10px;
  }

  /* Toast移动端字体 */
  .toast {
    font-size: 15px;
  }

  /* 下拉菜单移动端字体 */
  .nav-dropdown-item {
    font-size: 15px;
    padding: 12px 16px;
  }

  /* 页脚移动端字体 */
  .site-footer {
    font-size: 15px;
    padding: 32px 16px;
  }

  /* 登录注册移动端字体 */
  .auth-footer {
    font-size: 15px;
  }

  .auth-back-home {
    font-size: 15px;
  }
}

/* ==================== */
/* 用户下拉菜单 */
/* ==================== */
.nav-dropdown {
  position: relative;
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease;
}

.nav-user:hover {
  background-color: var(--bg-light);
}

.nav-avatar {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary-color), #818cf8);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 14px;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  min-width: 160px;
  background-color: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s ease;
  z-index: 1001;
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-item {
  display: block;
  padding: 10px 16px;
  color: var(--text-secondary);
  font-size: 14px;
  transition: all 0.2s ease;
}

.nav-dropdown-item:hover {
  background-color: var(--bg-light);
  color: var(--primary-color);
}

.nav-dropdown-item:first-child {
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.nav-dropdown-item:last-child {
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* ==================== */
/* 页脚 */
/* ==================== */
.site-footer {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
  font-size: 14px;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-white);
}

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

/* ==================== */
/* 首页 Hero 按钮（支持 a.btn 与 button） */
/* ==================== */
.hero-buttons {
  margin-top: 32px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  width: 100%;
}

.hero-buttons .btn,
.hero-buttons button {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  white-space: nowrap;
  min-width: 140px;
  text-decoration: none;
}

.hero-buttons .btn-primary,
.hero-buttons button.btn-primary {
  background-color: var(--primary-color);
  color: #fff;
}

.hero-buttons .btn-primary:hover,
.hero-buttons button.btn-primary:hover {
  background-color: var(--primary-hover);
  color: #fff;
}


@media (max-width: 768px) {
  .hero-buttons {
    flex-direction: column;
    gap: 14px;
  }

  .hero-buttons .btn,
  .hero-buttons button {
    width: 100%;
    max-width: 300px;
    font-size: 16px;
    padding: 14px 24px;
  }
}

.seo-content, .seo-extra, .tools-section {
  background-color: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 40px;
}

.hero-buttons .btn-secondary {
  background-color: #fff;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}
.hero-buttons .btn-secondary:hover {
  background-color: var(--primary-light);
}

.seo-content, .seo-extra {
  padding: 48px 0;
  margin: 0 auto 40px;
  line-height: 1.8;
}
.seo-content ul li::before {
  content: '✓';
  color: var(--success-color);
  margin-right: 6px;
}

.seo-content p {
  margin-bottom: 18px;
  color: var(--text-secondary);
}

.seo-content ul {
  margin: 16px 0 24px;
}

.seo-content li {
  margin-bottom: 8px;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-block {
  padding: 0 0;
}

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

.section-gray {
  background-color: var(--bg-light);
}

/* 首页 Hero 在灰底 section 时：副标题需深色保证可读性 */
.section-gray .hero-title {
  color: var(--text-primary);
  text-align: center;
}
.section-gray .hero-subtitle {
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.6;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-gray .hero-buttons {
  justify-content: center;
}

/* 全页 section 内容统一：容器居中、正文对比度与字号 */
.section-block .container {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.section-block .container p,
.section-block .container li {
  color: #374151;
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 14px;
}
.section-block .container p:last-child {
  margin-bottom: 0;
}
.section-block .container h2 {
  color: var(--text-primary);
  margin-top: 28px;
  margin-bottom: 12px;
}
.section-block .container h2:first-child {
  margin-top: 0;
}
.section-block .container h3 {
  color: var(--text-primary);
  font-size: 18px;
  margin-top: 20px;
  margin-bottom: 8px;
}
.section-block .container ul {
  margin: 12px 0 20px;
  padding-left: 1.4em;
  list-style: disc;
}
.section-block .container li {
  margin-bottom: 8px;
}

h1 { font-size: 40px; }
h2 { font-size: 28px; margin-bottom: 20px; }
h3 { font-size: 20px; margin-bottom: 12px; }

/* ==================== */
/* 首页新样式 */
/* ==================== */

/* 首页主容器 */
.home-page {
  padding-top: 0;
}

/* Hero 区块 */
.hero-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 80px 0 60px;
  color: #fff;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 48px;
  align-items: center;
}

.hero-left {
  max-width: 560px;
}

.hero-main-title {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #fff;
}

.hero-main-subtitle {
  font-size: 20px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 24px;
}

.hero-features {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
}

.hero-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 12px;
}

.hero-features .check-icon {
  color: #4ade80;
  font-weight: 600;
}

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

.hero-btn-primary {
  background: #fff;
  color: var(--primary-color);
  font-weight: 600;
  padding: 14px 32px;
}

.hero-btn-primary:hover {
  background: #f0f0f0;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.hero-btn-secondary {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.6);
  padding: 14px 32px;
}

.hero-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

/* Hero 右侧评分卡 */
.hero-right {
  display: flex;
  justify-content: center;
}

.score-card-demo {
  background: #fff;
  border-radius: 16px;
  padding: 24px;
  width: 100%;
  max-width: 340px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.score-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.score-card-icon {
  font-size: 20px;
}

.score-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.score-card-body {
  text-align: center;
}

.score-circle-lg {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color) 0%, #667eea 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  position: relative;
}

.score-number {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
}

.score-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  margin-left: 2px;
}

.score-meta {
  margin-bottom: 16px;
}

.score-meta-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg-light);
  border-radius: var(--radius-md);
}

.meta-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.meta-value {
  font-size: 18px;
  font-weight: 600;
  color: var(--success-color);
}

.score-suggestion {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px;
  background: #fff7e6;
  border-radius: var(--radius-md);
  text-align: left;
  font-size: 13px;
  color: #8a6d3b;
  line-height: 1.5;
}

.suggestion-icon {
  flex-shrink: 0;
}

/* Section 通用样式 */
.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header-left {
  text-align: left;
}

.section-title-lg {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.section-header-left .section-desc {
  margin: 0;
}

.section-cta {
  text-align: center;
  margin-top: 40px;
}

/* 训练模式卡片 */
.training-modes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.mode-card {
  background: var(--bg-white);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
}

.mode-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.mode-card-highlight {
  border-color: var(--primary-color);
  background: linear-gradient(180deg, #f5f3ff 0%, #fff 100%);
}

.mode-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary-color) 0%, #667eea 100%);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 12px;
}

.mode-icon {
  font-size: 40px;
  margin-bottom: 16px;
}

.mode-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.mode-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  min-height: 40px;
}

/* 热门面试题卡片 */
.hot-questions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.hot-question-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.3s ease;
}

.hot-question-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.hot-question-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.4;
}

.hot-question-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.difficulty-tag {
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
}

.difficulty-easy {
  background: #d4edda;
  color: #155724;
}

.difficulty-medium {
  background: #fff3cd;
  color: #856404;
}

.difficulty-hard {
  background: #f8d7da;
  color: #721c24;
}

.stats {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* 最新面试指南文章卡片 */
.latest-articles-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.latest-article-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: all 0.3s ease;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.latest-article-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.latest-article-card .article-category {
  font-size: 12px;
  color: var(--primary-color);
  background: #e6f4ff;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 12px;
  font-weight: 500;
  width: fit-content;
}

.latest-article-card .article-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 10px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.latest-article-card:hover .article-title {
  color: var(--primary-color);
}

.latest-article-card .article-summary {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0 0 12px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.latest-article-card .article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: auto;
}

.latest-article-card .article-date,
.latest-article-card .article-views {
  display: flex;
  align-items: center;
  gap: 4px;
}

@media (max-width: 1200px) {
  .latest-articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .latest-articles-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  
  .latest-article-card {
    padding: 16px;
  }
  
  .latest-article-card .article-title {
    font-size: 14px;
  }
}

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

/* 简历诊断区块 */
.resume-section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.resume-features {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}

.resume-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.resume-features .check-icon {
  color: var(--success-color);
  font-weight: 600;
}

/* 简历对比卡片 */
.resume-compare-card {
  display: flex;
  align-items: stretch;
  gap: 20px;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.compare-before,
.compare-after {
  flex: 1;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
}

.compare-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.compare-score {
  font-size: 48px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.compare-score.highlight {
  color: var(--success-color);
}

.compare-score .score-unit {
  font-size: 18px;
  font-weight: 500;
  color: var(--text-muted);
}

.compare-issues,
.compare-improvements {
  list-style: none;
  padding: 0;
  margin: 0;
  text-align: left;
}

.compare-issues li,
.compare-improvements li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  margin-bottom: 8px;
}

.compare-issues li {
  color: #dc3545;
}

.compare-improvements li {
  color: var(--success-color);
}

.issue-icon {
  flex-shrink: 0;
}

.compare-arrow {
  display: flex;
  align-items: center;
  font-size: 24px;
  color: var(--text-muted);
}

/* 系统设计卡片 */
.system-design-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.system-design-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s ease;
}

.system-design-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.sd-icon {
  font-size: 40px;
  margin-bottom: 16px;
}

.sd-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.sd-desc {
  font-size: 14px;
  color: var(--text-secondary);
}

/* AI报告区块 */
.ai-report-section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.ai-report-features {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}

.ai-report-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.ai-report-features .check-icon {
  color: var(--success-color);
  font-weight: 600;
}

/* AI报告演示卡 */
.ai-report-demo {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.report-demo-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  background: var(--bg-light);
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
  color: var(--text-primary);
}

.report-icon {
  font-size: 18px;
}

.report-demo-body {
  padding: 24px;
}

.report-score-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.report-label {
  font-size: 16px;
  color: var(--text-secondary);
}

.report-score {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary-color);
}

.report-score .score-unit {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-muted);
}

.report-suggestion-box {
  background: #f0f9ff;
  border-radius: var(--radius-md);
  padding: 16px;
}

.suggestion-title {
  display: block;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.report-suggestion-box p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* 定价卡片 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 800px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-white);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
}

.pricing-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-card-highlight {
  border-color: var(--primary-color);
  background: linear-gradient(180deg, #f5f3ff 0%, #fff 100%);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary-color) 0%, #667eea 100%);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 20px;
  border-radius: 14px;
}

.pricing-name {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.pricing-price {
  font-size: 48px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 24px;
}

.pricing-period {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  text-align: left;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--text-primary);
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features .check-icon {
  color: var(--success-color);
  font-weight: 600;
}

/* 最终CTA区块 */
.section-cta-final {
  background: linear-gradient(135deg, var(--primary-color) 0%, #667eea 100%);
  padding: 80px 0;
  text-align: center;
}

.cta-final-title {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.cta-final-subtitle {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
}

.cta-final-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.cta-final-buttons .btn-primary {
  background: #fff;
  color: var(--primary-color);
  font-weight: 600;
  padding: 16px 40px;
  font-size: 16px;
}

.cta-final-buttons .btn-primary:hover {
  background: #f0f0f0;
  transform: translateY(-2px);
}

.btn-outline-white {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.6);
  padding: 16px 40px;
  font-size: 16px;
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

/* 用户刺痛条（转化暴涨点） */
.pain-bar-section {
  background: linear-gradient(135deg, #fff5f5 0%, #ffe8e8 100%);
  padding: 20px 0;
  border-top: 1px solid #ffcccc;
  border-bottom: 1px solid #ffcccc;
}

.pain-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
}

.pain-item {
  font-size: 15px;
  color: #cc4444;
  font-weight: 500;
}

/* 社会证明 */
.social-proof {
  margin-top: 16px;
  padding: 12px 20px;
  background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
  border-radius: 8px;
  text-align: center;
  font-size: 14px;
  color: #2e7d32;
  border: 1px solid #a5d6a7;
}

.social-proof strong {
  color: #1b5e20;
  font-size: 18px;
}

/* 价格备注 */
.pricing-note {
  margin-top: 24px;
  text-align: center;
}

.pricing-note p {
  display: inline-block;
  padding: 12px 24px;
  background: #fff3e0;
  border-radius: 8px;
  color: #e65100;
  font-size: 14px;
  border: 1px solid #ffcc80;
}

/* SEO内容区 */
.seo-section {
  padding: 48px 0;
}

.seo-section h2 {
  font-size: 22px;
  margin-top: 32px;
}

.seo-section h2:first-child {
  margin-top: 0;
}

.seo-section h3 {
  font-size: 18px;
  margin-top: 24px;
}

/* 首页响应式适配 */
@media (max-width: 768px) {
  .hero-section {
    padding: 48px 0 40px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-main-title {
    font-size: 28px;
  }

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

  .hero-cta-buttons {
    flex-direction: column;
  }

  .hero-cta-buttons .btn {
    width: 100%;
    text-align: center;
  }

  .hero-right {
    order: -1;
  }

  .score-card-demo {
    max-width: 100%;
  }

  .section-title-lg {
    font-size: 24px;
  }

  .training-modes {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .mode-card {
    padding: 24px 20px;
  }

  .hot-questions-grid {
    grid-template-columns: 1fr;
  }

  .resume-section-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .resume-section-left {
    order: 1;
  }

  .resume-section-right {
    order: 2;
  }

  .resume-compare-card {
    flex-direction: column;
    gap: 16px;
  }

  .compare-arrow {
    transform: rotate(90deg);
    justify-content: center;
  }

  .system-design-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .ai-report-section-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .pricing-card {
    padding: 32px 24px;
  }

  .pricing-price {
    font-size: 40px;
  }

  .cta-final-title {
    font-size: 26px;
  }

  .cta-final-buttons {
    flex-direction: column;
    align-items: center;
  }

  .cta-final-buttons .btn {
    width: 100%;
    max-width: 300px;
  }

  .section-cta-final {
    padding: 60px 0;
  }
}

/* ==================== */
/* 移动端SEO内容区字体适配 */
/* ==================== */
@media (max-width: 768px) {
  h1 { font-size: 26px; }
  h2 { font-size: 22px; margin-bottom: 16px; }
  h3 { font-size: 18px; margin-bottom: 10px; }

  .section-block .container p,
  .section-block .container li {
    font-size: 16px;
    line-height: 1.8;
  }

  .section-block .container h2 {
    font-size: 20px;
  }

  .section-block .container h3 {
    font-size: 17px;
  }

  .section-title {
    font-size: 20px;
  }

  .section-subtitle {
    font-size: 15px;
  }

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

  /* SEO内容区移动端优化 */
  .seo-content p,
  .seo-extra p {
    font-size: 16px;
    line-height: 1.8;
  }

  .seo-content li,
  .seo-extra li {
    font-size: 16px;
  }

  /* 容器内边距优化 */
  .container {
    padding: 0 16px;
  }

  .section-block {
    padding: 24px 0;
  }

  .seo-content,
  .seo-extra {
    padding: 32px 0;
  }

  /* 刺痛条移动端 */
  .pain-bar {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .pain-item {
    font-size: 14px;
  }

  /* 社会证明移动端 */
  .social-proof {
    margin-top: 12px;
    font-size: 13px;
  }

  .social-proof strong {
    font-size: 16px;
  }
}

/* ==================== */
/* 积分购买弹窗 */
/* ==================== */
.modal-points-purchase {
  max-width: 380px;
  width: 90%;
  position: relative;
}

.modal-points-purchase .modal-close-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 28px;
  height: 28px;
  border: none;
  background: var(--bg-light);
  border-radius: 50%;
  font-size: 18px;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.modal-points-purchase .modal-close-btn:hover {
  background: var(--border-color);
  color: var(--text-primary);
}

.points-purchase-content {
  padding: 20px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin: 16px 0;
}

.points-package-row,
.points-qty-row,
.points-summary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
}

.points-package-label,
.points-qty-label,
.points-summary-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.points-package-price {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary-color);
}

.points-qty-stepper {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.points-qty-stepper button {
  width: 36px;
  height: 36px;
  border: none;
  background: var(--bg-light);
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
  transition: background 0.2s;
}

.points-qty-stepper button:hover {
  background: var(--border-color);
}

.points-qty-stepper input {
  width: 50px;
  height: 36px;
  text-align: center;
  border: none;
  border-left: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  font-size: 15px;
  font-weight: 600;
}

.points-qty-stepper input:focus {
  outline: none;
}

.points-summary-value {
  font-size: 18px;
  font-weight: 700;
  color: #f59e0b;
}

.points-modal-tip {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ================================
   积分到账动画 - 钻石弧线飞行
   ================================ */

.flying-diamond {
  position: fixed;
  z-index: 10000;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0);
  opacity: 0;
  transition: none;
}

.flying-diamond.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  animation: diamondEnter 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes diamondEnter {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0) rotate(-180deg);
  }
  60% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.2) rotate(10deg);
  }
  100% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1) rotate(0deg);
  }
}

.flying-diamond .diamond-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 120px;
  height: 120px;
  margin: -60px 0 0 -60px;
  background: radial-gradient(circle, rgba(100, 149, 237, 0.4) 0%, rgba(100, 149, 237, 0.1) 50%, transparent 70%);
  border-radius: 50%;
  animation: glowPulse 0.8s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.3); }
}

.flying-diamond .diamond-icon {
  font-size: 64px;
  filter: drop-shadow(0 4px 20px rgba(100, 149, 237, 0.6));
  animation: diamondShine 0.6s ease-in-out infinite;
}

@keyframes diamondShine {
  0%, 100% { filter: drop-shadow(0 4px 20px rgba(100, 149, 237, 0.6)) brightness(1); }
  50% { filter: drop-shadow(0 8px 30px rgba(100, 149, 237, 0.9)) brightness(1.3); }
}

.flying-diamond .diamond-points {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 8px;
  font-size: 28px;
  font-weight: 800;
  color: #ff6b35;
  text-shadow: 0 2px 8px rgba(255, 107, 53, 0.4);
  white-space: nowrap;
  animation: pointsBounce 0.5s ease-out 0.3s both;
}

@keyframes pointsBounce {
  0% {
    opacity: 0;
    transform: translateX(-50%) translateY(10px) scale(0.5);
  }
  60% {
    transform: translateX(-50%) translateY(-3px) scale(1.1);
  }
  100% {
    opacity: 1;
    transform: translateX(-50%) translateY(0) scale(1);
  }
}

/* 钻石尾迹效果 */
.flying-diamond.flying .diamond-trail {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  background: radial-gradient(circle, rgba(100, 149, 237, 0.8) 0%, transparent 70%);
  border-radius: 50%;
  animation: trailFade 0.3s ease-out infinite;
}

@keyframes trailFade {
  0% { opacity: 0.8; transform: scale(1); }
  100% { opacity: 0; transform: scale(2); }
}

/* 飞行中隐藏积分文字 */
.flying-diamond.flying .diamond-points {
  opacity: 0;
  transition: opacity 0.2s;
}

/* 积分按钮闪烁效果 */
.nav-points-display.points-pulse {
  animation: pointsPulse 0.3s ease-in-out 3;
}

@keyframes pointsPulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
  }
  50% {
    transform: scale(1.2);
    box-shadow: 0 4px 24px rgba(255, 193, 7, 0.8);
  }
}