/* ========================================
   研知己 - 企业官网主样式
   简约大气的考研辅导品牌风格
   ======================================== */

/* ===== CSS 变量 ===== */
:root {
  /* 主色调 - 学术深蓝 */
  --color-primary: #1e3a8a;
  --color-primary-dark: #1e293b;
  --color-primary-light: #3b82f6;

  /* 辅色 - 学术金 */
  --color-accent: #d4a574;
  --color-accent-dark: #b08d57;

  /* 强调色 - 暖橙 CTA */
  --color-cta: #ea580c;
  --color-cta-hover: #c2410c;

  /* 中性色 */
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-dark: #0f172a;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;

  /* 阴影 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 40px -10px rgba(0, 0, 0, 0.15);

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* 间距 */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;

  /* 字体 */
  --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans CN",
               "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI",
               Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;

  /* 过渡 */
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  /* 容器 */
  --container-max: 1200px;
  --container-padding: 1.5rem;

  /* 导航栏高度 */
  --header-height: 72px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: all var(--transition);
}

ul, ol {
  list-style: none;
}

/* ===== 容器 ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ===== 通用文字 ===== */
.section {
  padding: var(--space-2xl) 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-tag {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
  position: relative;
  padding: 0 var(--space-md);
}

.section-tag::before,
.section-tag::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 20px;
  height: 1px;
  background: var(--color-primary);
  opacity: 0.4;
}

.section-tag::before { left: -20px; }
.section-tag::after { right: -20px; }

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  white-space: nowrap;
  text-align: center;
}

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

.btn-primary:hover {
  background: var(--color-cta-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

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

.btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-lg {
  padding: 1.125rem 2.5rem;
  font-size: 1.05rem;
}

/* ===== 导航栏 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.site-header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

.brand-logo {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
  letter-spacing: -0.04em;
}

/* 真实 logo 图片（页眉蓝色 / 页脚白色） */
.brand-logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-serif);
  letter-spacing: 0.05em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  position: relative;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  color: var(--color-text);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color var(--transition);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-cta {
  padding: 0.5rem 1.25rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
}

.nav-cta:hover {
  background: var(--color-primary-dark);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  position: relative;
  z-index: 1100;
}

.nav-toggle span {
  position: absolute;
  left: 8px;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: all var(--transition);
}

.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 19px; }
.nav-toggle span:nth-child(3) { top: 24px; }

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg);
  top: 19px;
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg);
  top: 19px;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + 2rem);
  padding-bottom: var(--space-xl);
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(212, 165, 116, 0.18), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(59, 130, 246, 0.25), transparent 50%);
  z-index: -1;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: -1;
  mask-image: radial-gradient(circle at center, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at center, #000 0%, transparent 70%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero-content {
  max-width: 580px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(212, 165, 116, 0.15);
  border: 1px solid rgba(212, 165, 116, 0.3);
  color: var(--color-accent);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-md);
}

.hero-tag-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.hero-title-accent {
  background: linear-gradient(135deg, #d4a574 0%, #f0c896 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  font-size: 1.125rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: var(--space-lg);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: var(--space-xl);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-stat-num {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.hero-stat-label {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
}

.hero-visual {
  position: relative;
  aspect-ratio: 4 / 5;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-xl);
}

.hero-card-main {
  width: 100%;
  max-width: 360px;
  z-index: 2;
}

.hero-card-secondary {
  width: 200px;
  bottom: 8%;
  right: -8%;
  z-index: 3;
  animation: float 6s ease-in-out infinite;
}

.hero-card-third {
  width: 180px;
  top: 12%;
  left: -6%;
  z-index: 1;
  animation: float 7s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-card-mini-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.hero-progress-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.hero-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-dark));
  border-radius: var(--radius-full);
}

.hero-progress-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
}

.hero-card-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.hero-card-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
}

.hero-card-item::before {
  content: "✓";
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  background: var(--color-accent);
  border-radius: 50%;
  color: var(--color-bg-dark);
  font-size: 0.7rem;
  font-weight: 700;
}

/* ===== 特性区 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
}

.feature-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

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

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

.feature-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.08), rgba(212, 165, 116, 0.08));
  color: var(--color-primary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  font-size: 1.5rem;
}

.feature-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.feature-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== 业务展示 ===== */
.business-tabs {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.business-tab {
  padding: 0.625rem 1.5rem;
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition);
}

.business-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

.business-content {
  display: none;
  animation: fadeUp 0.5s ease;
}

.business-content.active {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

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

.business-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
}

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

.business-card-badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  padding: 0.25rem 0.625rem;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.business-card-icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.business-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.business-card-desc {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.business-card-meta {
  display: flex;
  gap: var(--space-md);
  font-size: 0.85rem;
  color: var(--color-text-light);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
}

/* ===== 数字展示 ===== */
.stats-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: var(--space-2xl) 0;
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 10% 30%, rgba(212, 165, 116, 0.2), transparent 40%),
    radial-gradient(circle at 90% 70%, rgba(59, 130, 246, 0.2), transparent 40%);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-lg);
  position: relative;
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  background: linear-gradient(135deg, #d4a574 0%, #f0c896 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.85);
}

/* ===== CTA 区 ===== */
.cta-section {
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, #fff 100%);
  padding: var(--space-2xl) 0;
}

.cta-card {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: var(--space-2xl) var(--space-xl);
  border-radius: var(--radius-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, rgba(212, 165, 116, 0.2), transparent);
}

.cta-card-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  position: relative;
}

.cta-card-desc {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-lg);
  position: relative;
}

.cta-buttons {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* ===== 关于页 ===== */
.page-hero {
  padding: calc(var(--header-height) + var(--space-2xl)) 0 var(--space-xl);
  background: linear-gradient(135deg, #f8fafc 0%, #fff 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.page-hero::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -200px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(30, 58, 138, 0.05), transparent 70%);
}

.page-hero-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
  position: relative;
}

.page-hero-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  position: relative;
}

.page-hero-breadcrumb a:hover {
  color: var(--color-primary);
}

.page-hero-breadcrumb-sep {
  color: var(--color-text-light);
}

/* 关于 - 公司简介 */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.about-intro-content h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  line-height: 1.3;
}

.about-intro-content p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  line-height: 1.8;
}

.about-intro-image {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-intro-image::before {
  content: "研知己";
  font-family: var(--font-serif);
  font-size: 6rem;
  color: rgba(255, 255, 255, 0.15);
  font-weight: 700;
  letter-spacing: 0.2em;
}

/* 关于 - 价值观 */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-md);
}

.value-card {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  text-align: left;
}

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

.value-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  font-size: 1.25rem;
}

.value-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.value-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* 关于 - 时间线 */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-lg) 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  padding: var(--space-md) 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-md);
  align-items: center;
}

.timeline-dot {
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  border: 4px solid #fff;
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--color-primary);
  z-index: 1;
}

.timeline-content {
  background: #fff;
  border: 1px solid var(--color-border);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.timeline-year {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.timeline-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.timeline-item:nth-child(odd) .timeline-content:nth-of-type(1) {
  text-align: right;
  grid-column: 1;
}

.timeline-item:nth-child(odd) .timeline-content:nth-of-type(2) {
  grid-column: 3;
}

/* 关于 - 团队 */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
}

.team-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all var(--transition);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.team-avatar {
  width: 100px;
  height: 100px;
  margin: 0 auto var(--space-sm);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 2rem;
  font-weight: 600;
}

.team-name {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.team-role {
  font-size: 0.875rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.team-bio {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ===== 服务页 ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

.service-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

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

.service-card.featured {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  border: none;
}

.service-card.featured .service-name,
.service-card.featured .service-price {
  color: #fff;
}

.service-card.featured .service-desc,
.service-card.featured .service-feature {
  color: rgba(255, 255, 255, 0.8);
}

.service-badge {
  position: absolute;
  top: -10px;
  right: var(--space-md);
  padding: 0.25rem 0.75rem;
  background: var(--color-cta);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
}

.service-icon {
  font-size: 2.25rem;
  margin-bottom: var(--space-sm);
}

.service-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.service-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
  flex: 1;
}

.service-features {
  list-style: none;
  margin: var(--space-sm) 0;
  padding: var(--space-sm) 0;
  border-top: 1px solid var(--color-border);
}

.service-card.featured .service-features {
  border-color: rgba(255, 255, 255, 0.15);
}

.service-feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.service-feature::before {
  content: "✓";
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  font-size: 0.7rem;
  flex-shrink: 0;
}

.service-card.featured .service-feature::before {
  background: var(--color-accent);
  color: var(--color-bg-dark);
}

.service-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: var(--space-sm) 0;
}

.service-price-sub {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

/* 学习路径 */
.path-timeline {
  position: relative;
  padding: var(--space-lg) 0;
}

.path-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  position: relative;
}

.path-step-marker {
  width: 64px;
  height: 64px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  font-weight: 700;
  position: relative;
  box-shadow: var(--shadow-lg);
  z-index: 1;
}

.path-step:not(:last-child) .path-step-marker::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 80px;
  background: var(--color-border);
  z-index: 0;
}

.path-step-content {
  padding-top: 0.5rem;
}

.path-step-time {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.path-step-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.path-step-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* 师资 */
.teacher-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-md);
}

.teacher-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition);
}

.teacher-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.teacher-cover {
  height: 120px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: grid;
  place-items: center;
  color: rgba(255, 255, 255, 0.4);
  font-size: 3rem;
  font-weight: 700;
  font-family: var(--font-serif);
}

.teacher-body {
  padding: var(--space-md);
  text-align: center;
  margin-top: -40px;
  position: relative;
}

.teacher-avatar {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-sm);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
  border: 4px solid #fff;
  box-shadow: var(--shadow-md);
}

.teacher-name {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.teacher-subject {
  font-size: 0.875rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.teacher-bio {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ===== 联系页 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 680px) 300px;
  justify-content: center;
  align-items: start;
  gap: var(--space-xl);
}

/* 企业微信二维码卡片（联系页表单右侧） */
.contact-qr-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
}

.contact-qr-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.contact-qr-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.contact-qr-img {
  width: 100%;
  max-width: 240px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.contact-qr-name {
  margin-top: var(--space-sm);
  font-weight: 600;
  color: var(--color-text);
}

.contact-info {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.contact-info::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(212, 165, 116, 0.2), transparent);
}

.contact-info-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  position: relative;
}

.contact-info-desc {
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: var(--space-lg);
  position: relative;
}

.contact-list {
  position: relative;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.contact-item-icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.contact-item-label {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-item-value {
  font-size: 1rem;
  color: #fff;
}

.contact-socials {
  display: flex;
  gap: 0.5rem;
  margin-top: var(--space-lg);
  position: relative;
}

.contact-social {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  font-size: 1.05rem;
  transition: all var(--transition);
}

.contact-social:hover {
  background: var(--color-accent);
  transform: translateY(-2px);
}

/* 表单 */
.contact-form-wrapper {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.contact-form-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.contact-form-desc {
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  font-size: 0.95rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.form-group {
  margin-bottom: var(--space-sm);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.form-label-required::after {
  content: " *";
  color: var(--color-cta);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--color-text);
  background: #fff;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.form-control:hover {
  border-color: var(--color-text-light);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.08);
}

.form-control.is-invalid {
  border-color: var(--color-cta);
}

.form-control.is-invalid:focus {
  box-shadow: 0 0 0 4px rgba(234, 88, 12, 0.08);
}

.form-error {
  display: none;
  font-size: 0.8rem;
  color: var(--color-cta);
  margin-top: 0.25rem;
}

/* 微信号"同手机号"勾选框 */
.wechat-same-cell {
  display: flex;
  align-items: flex-end;
  padding-bottom: 0.6rem;
}

.wechat-same {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  cursor: pointer;
  user-select: none;
}

.wechat-same input[type="checkbox"] {
  width: 15px;
  height: 15px;
  accent-color: var(--color-primary);
  cursor: pointer;
  margin: 0;
}

/* ===== 法律文本页（隐私政策 / 服务条款） ===== */
.legal-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--color-text);
}

.legal-meta {
  color: var(--color-text-muted);
  font-size: 0.88rem;
  margin-bottom: var(--space-lg, 2rem);
}

.legal-body h2 {
  font-size: 1.25rem;
  color: var(--color-primary-dark);
  margin: 2.2rem 0 0.8rem;
  padding-left: 0.7rem;
  border-left: 3px solid var(--color-primary);
}

.legal-body p {
  margin: 0.55rem 0;
}

.legal-body .legal-item {
  padding-left: 0.2rem;
}

.legal-body strong {
  color: var(--color-primary-dark);
}

.legal-body a {
  color: var(--color-primary);
}

.form-control.is-invalid + .form-error {
  display: block;
}

textarea.form-control {
  resize: vertical;
  min-height: 110px;
  font-family: inherit;
}

.form-radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.form-radio {
  display: none;
}

.form-radio-label {
  padding: 0.5rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition);
}

.form-radio:checked + .form-radio-label {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.form-submit {
  width: 100%;
  padding: 0.875rem;
  background: var(--color-primary);
  color: #fff;
  font-weight: 500;
  border-radius: var(--radius-md);
  margin-top: var(--space-sm);
  font-size: 0.95rem;
}

.form-submit:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.form-success {
  display: none;
  padding: var(--space-md);
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: var(--radius-md);
  color: #166534;
  text-align: center;
  margin-top: var(--space-sm);
}

.form-success.show {
  display: block;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: all var(--transition);
}

.faq-item.active {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.faq-question {
  width: 100%;
  padding: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  text-align: left;
}

.faq-question-icon {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  font-size: 1rem;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item.active .faq-question-icon {
  transform: rotate(45deg);
  background: var(--color-primary);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-answer-inner {
  padding: 0 var(--space-md) var(--space-md);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

/* ===== 数据库页 ===== */
.db-hero {
  padding: calc(var(--header-height) + var(--space-xl)) 0 var(--space-lg);
  background: linear-gradient(135deg, #f8fafc 0%, #fff 100%);
  border-bottom: 1px solid var(--color-border);
}

.db-hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.db-hero-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.db-hero-desc {
  color: var(--color-text-muted);
  font-size: 1rem;
}

.db-search-bar {
  position: relative;
  flex: 1;
  max-width: 480px;
  min-width: 280px;
}

.db-search-bar input {
  width: 100%;
  padding: 0.875rem 1.25rem 0.875rem 3rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  background: #fff;
  font-size: 0.95rem;
  transition: all var(--transition);
}

.db-search-bar input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.08);
}

.db-search-bar::before {
  content: "🔍";
  position: absolute;
  left: 1.125rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
}

.db-tabs {
  display: flex;
  gap: 0.25rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-lg);
  overflow-x: auto;
  scrollbar-width: none;
}

.db-tabs::-webkit-scrollbar {
  display: none;
}

.db-tab {
  padding: 0.875rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: all var(--transition);
}

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

.db-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.db-panel {
  display: none;
}

.db-panel.active {
  display: block;
  animation: fadeUp 0.4s ease;
}

.db-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
}

.db-filter {
  flex: 1;
  min-width: 140px;
}

.db-filter label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.db-filter select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--color-text);
}

.db-filter select:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* 数据表 */
.db-table-wrapper {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.db-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.db-table thead {
  background: var(--color-bg-alt);
}

.db-table th {
  padding: 0.875rem 1rem;
  text-align: left;
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-bottom: 1px solid var(--color-border);
}

.db-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.db-table tbody tr {
  transition: background var(--transition);
}

.db-table tbody tr:hover {
  background: var(--color-bg-alt);
}

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

.db-tag {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}

.db-tag-985 { background: rgba(220, 38, 38, 0.1); color: #dc2626; }
.db-tag-211 { background: rgba(30, 58, 138, 0.1); color: var(--color-primary); }
.db-tag-double { background: rgba(212, 165, 116, 0.15); color: #b08d57; }
.db-tag-local { background: rgba(34, 197, 94, 0.1); color: #16a34a; }
.db-tag-a-plus { background: rgba(220, 38, 38, 0.1); color: #dc2626; }
.db-tag-a { background: rgba(234, 88, 12, 0.1); color: var(--color-cta); }
.db-tag-b-plus { background: rgba(212, 165, 116, 0.15); color: #b08d57; }
.db-tag-b { background: rgba(100, 116, 139, 0.1); color: var(--color-text-muted); }
.db-tag-online { background: rgba(168, 85, 247, 0.1); color: #a855f7; }

.db-table-meta {
  padding: var(--space-sm) var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.db-pagination {
  display: flex;
  gap: 0.25rem;
}

.db-page-btn {
  padding: 0.375rem 0.75rem;
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-text);
}

.db-page-btn:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.db-page-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.db-page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* 详情面板 */
.db-detail-panel {
  background: var(--color-bg-alt);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  border-left: 4px solid var(--color-primary);
}

.db-detail-info {
  flex: 1;
  min-width: 200px;
}

.db-detail-info-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.db-detail-info-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-top: 0.25rem;
}

.db-detail-actions {
  display: flex;
  gap: 0.5rem;
}

.db-detail-btn {
  padding: 0.5rem 1rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
}

.db-detail-btn:hover {
  background: var(--color-primary-dark);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-2xl) 0 var(--space-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(2, 1fr);
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .brand {
  color: #fff;
  margin-bottom: var(--space-sm);
}

.footer-desc {
  line-height: 1.7;
  margin-bottom: var(--space-md);
  max-width: 320px;
  font-size: 0.9rem;
}

.footer-contact-line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.footer-title {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.footer-list a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-md);
}

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

/* ===== 响应式 ===== */
@media (max-width: 968px) {
  :root {
    --space-2xl: 4rem;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    margin: 0 auto;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    aspect-ratio: auto;
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
    max-width: 420px;
    margin: var(--space-lg) auto 0;
  }

  /* 窄屏下三张卡片取消绝对定位，竖排平铺，不再悬浮遮挡正文 */
  .hero-visual .hero-card {
    position: static;
    width: 100%;
    max-width: none;
    animation: none;
  }

  .about-intro {
    grid-template-columns: 1fr;
  }

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

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

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
    --space-2xl: 3rem;
  }

  /* 修复手机端菜单背景透明：header 的毛玻璃效果会把固定定位的菜单抽屉
     困在 72px 高的页眉盒子里，导致菜单透明、文字叠在内容上 */
  .site-header {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: rgba(255, 255, 255, 0.98);
  }

  .container {
    padding: 0 1rem;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    max-width: 80vw;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: calc(var(--header-height) + 1rem) 1.5rem 1.5rem;
    gap: 0.25rem;
    box-shadow: var(--shadow-xl);
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 1000;
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .nav-link {
    width: 100%;
    padding: 0.75rem 0.5rem;
    border-radius: var(--radius-sm);
  }

  .nav-link.active {
    background: var(--color-bg-alt);
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-actions {
    flex-direction: column;
    width: 100%;
    gap: 0.5rem;
    margin-top: 0.5rem;
    border-top: 1px solid var(--color-border);
    padding-top: 1rem;
  }

  .nav-actions .nav-link,
  .nav-actions .nav-cta {
    width: 100%;
    text-align: center;
    padding: 0.75rem 1rem;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-md);
  }

  .nav-cta {
    padding: 0.75rem 1rem !important;
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    padding-top: calc(var(--header-height) + 2rem);
    min-height: auto;
  }

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

  .hero-cta .btn {
    width: 100%;
  }

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

  /* 窄屏下三张 Hero 卡片全部保留（已在 968px 断点改为竖排平铺） */
  .hero-card-secondary,
  .hero-card-third {
    display: block;
  }

  /* 服务亮点九个标签：窄屏收窄为一行小胶囊（可横滑），不占首屏高度 */
  .module-tabs {
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 0.35rem;
    overflow-x: auto;
    padding: 0.15rem 0.15rem 0.5rem;
    scrollbar-width: none;
    /* 右侧渐隐，提示后面还有内容可滑动 */
    -webkit-mask-image: linear-gradient(to right, #000 80%, rgba(0, 0, 0, 0.3) 96%, transparent 100%);
    mask-image: linear-gradient(to right, #000 80%, rgba(0, 0, 0, 0.3) 96%, transparent 100%);
  }

  .module-tabs::-webkit-scrollbar {
    display: none;
  }

  #moduleTabs {
    scrollbar-width: none;
  }

  #moduleTabs::-webkit-scrollbar {
    display: none;
  }

  #moduleTabs .module-tab {
    flex: 0 0 auto;
    width: auto;
    justify-content: center;
    padding: 0.35rem 0.85rem;
    font-size: 0.82rem;
    box-shadow: none;
  }

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

  .timeline::before {
    left: 32px;
  }

  .timeline-item {
    grid-template-columns: 64px 1fr;
    gap: var(--space-sm);
  }

  .timeline-dot {
    margin-left: 24px;
  }

  .timeline-content {
    grid-column: 2 !important;
    text-align: left !important;
  }

  .timeline-item > .timeline-content:first-child {
    display: none;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .db-table {
    font-size: 0.85rem;
    min-width: 600px;
  }

  .db-table-wrapper {
    overflow-x: auto;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .contact-info,
  .contact-form-wrapper {
    padding: var(--space-md);
  }

  .cta-buttons .btn {
    width: 100%;
  }
}

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-alt);
}

::-webkit-scrollbar-thumb {
  background: var(--color-text-light);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* ===== 工具类 ===== */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.hidden { display: none !important; }

/* 进入动画 */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 服务模块轮播（产品服务页） ===== */
.module-tabs {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.25rem 0.25rem 0.75rem;
  margin-bottom: var(--space-md);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
  -webkit-overflow-scrolling: touch;
}

.module-tabs::-webkit-scrollbar {
  height: 4px;
}

.module-tabs::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

.module-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1.15rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  transition: all var(--transition);
}

.module-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.module-tab.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.module-panels {
  position: relative;
}

.module-panel {
  display: none;
  background: #fff;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.module-panel.active {
  display: block;
  animation: moduleFade 0.35s ease;
}

@keyframes moduleFade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.module-panel-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.module-panel-desc {
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ===== 服务模块面板 · 富内容排版 ===== */
.module-panel-head {
  margin-bottom: var(--space-sm);
}

.module-panel-sub {
  color: var(--color-accent-dark);
  font-size: 1rem;
  font-weight: 500;
  margin-top: 0.25rem;
}

.module-panel-lead {
  color: var(--color-text-muted);
  line-height: 1.9;
  margin-bottom: var(--space-md);
  max-width: 60em;
}

.module-panel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 0.75rem;
  margin-bottom: var(--space-md);
}

.module-subcard {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 1rem 1.15rem;
}

.module-subcard-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}

.module-subcard p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

.module-subcard-tag {
  font-size: 0.8rem !important;
  color: var(--color-accent-dark) !important;
  margin-bottom: 0.35rem;
}

.module-subcard-note {
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px dashed var(--color-border);
  font-size: 0.82rem !important;
}

.module-panel-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: var(--space-md);
}

.module-panel-list li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  font-size: 0.95rem;
}

.module-panel-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.module-panel-list strong {
  color: var(--color-text);
  margin-right: 0.5rem;
}

.module-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.75rem;
  margin-bottom: var(--space-md);
  counter-reset: module-step;
}

.module-step {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 1rem 1.15rem;
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.module-step strong {
  display: block;
  color: var(--color-primary);
  margin-bottom: 0.15rem;
}

.module-step-num {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  margin-top: 0.1rem;
}

.module-panel-highlight {
  border-left: 3px solid var(--color-accent);
  padding: 0.35rem 0 0.35rem 1rem;
  color: var(--color-primary);
  font-weight: 500;
  line-height: 1.8;
}

/* ===== 服务模块面板 · 阅读层次强化（覆盖上方默认值） ===== */

/* 标签：等分铺满整行、居中排列，浅蓝底与页面区分，更醒目 */
.module-tab {
  flex: 1 0 auto;
  justify-content: center;
  padding: 0.7rem 1.1rem;
  background: #edf2fb;
  border: 1px solid #c5d4ec;
  font-size: 1rem;
  font-weight: 600;
  color: #2f4160;
  box-shadow: 0 1px 3px rgba(30, 58, 138, 0.1);
}

.module-tab:hover {
  background: #dde8fa;
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(30, 58, 138, 0.16);
}

.module-tab.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 6px 16px rgba(30, 58, 138, 0.32);
}

/* 主标题：更大更粗，左侧金色小竖条定位视线 */
.module-panel-title {
  position: relative;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  letter-spacing: 0.01em;
  padding-left: 1rem;
}

.module-panel-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  bottom: 0.15em;
  width: 5px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--color-accent), var(--color-accent-dark));
}

/* 副标题：金色、字号略大、保持低调 */
.module-panel-sub {
  color: var(--color-accent-dark);
  font-size: 1.12rem;
  font-weight: 500;
  margin-top: 0.4rem;
  padding-left: 1rem;
}

/* 引导语与正文：加深颜色、放大字号，提升可读性 */
.module-panel-lead {
  color: #334155;
  font-size: 1.06rem;
  line-height: 1.9;
}

.module-panel-list li {
  font-size: 1.02rem;
  color: #334155;
}

.module-panel-list strong {
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.05rem;
  margin-right: 0.6rem;
}

/* 子卡片：标题更醒目，正文加深 */
.module-subcard {
  padding: 1.1rem 1.25rem;
}

.module-subcard-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.45rem;
}

.module-subcard p {
  font-size: 0.95rem;
  color: #475569;
  line-height: 1.8;
}

.module-subcard-tag {
  font-size: 0.85rem !important;
  color: var(--color-accent-dark) !important;
  font-weight: 500;
  margin-bottom: 0.45rem;
}

/* 步骤卡：标题加粗加深，正文加深 */
.module-step {
  font-size: 0.98rem;
  color: #475569;
}

.module-step strong {
  font-size: 1.03rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* 金句收尾：从"竖线引用"升级为浅金底色块，真正成为视觉落点 */
.module-panel-highlight {
  border-left: 4px solid var(--color-accent);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 0.85rem 1.2rem;
  color: #fff;
  font-weight: 600;
  font-size: 1.05rem;
  line-height: 1.85;
}

/* ===== 私塾定制系列卡（产品服务页 · 考研课程体系顶部） ===== */
.series-card {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-primary) 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-xl) var(--space-xl) var(--space-lg);
  margin-bottom: var(--space-xl);
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.series-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 85% 20%, rgba(212, 165, 116, 0.22), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(59, 130, 246, 0.18), transparent 45%);
  pointer-events: none;
}

.series-head {
  position: relative;
  margin-bottom: var(--space-lg);
}

.series-tag {
  display: inline-block;
  padding: 0.25rem 0.9rem;
  background: rgba(212, 165, 116, 0.18);
  border: 1px solid rgba(212, 165, 116, 0.4);
  color: var(--color-accent);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.series-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  line-height: 1.25;
}

.series-sub {
  color: rgba(255, 255, 255, 0.65);
  margin-top: 0.4rem;
  font-size: 1rem;
}

.series-list {
  position: relative;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 0.75rem;
  margin-bottom: var(--space-lg);
}

.series-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  padding: 0.8rem 1.1rem;
  font-size: 0.98rem;
  color: rgba(255, 255, 255, 0.92);
  transition: all var(--transition);
}

.series-item::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent);
}

.series-item:hover {
  background: rgba(255, 255, 255, 0.13);
  border-color: rgba(212, 165, 116, 0.5);
}

.series-foot {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.series-price {
  font-size: 1.9rem;
  font-weight: 800;
  background: linear-gradient(135deg, #d4a574 0%, #f0c896 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
}

.series-price-sub {
  font-size: 0.95rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.6);
  -webkit-text-fill-color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 640px) {
  .series-card {
    padding: var(--space-lg) var(--space-md);
  }
  .series-foot {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== 院校规划小块（系列卡下方） ===== */
.plan-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-left: 5px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow-md);
}

.plan-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--space-sm);
}

.plan-tag {
  display: inline-block;
  padding: 0.2rem 0.75rem;
  background: rgba(212, 165, 116, 0.15);
  color: var(--color-accent-dark);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.plan-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-primary-dark);
}

.plan-products {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: var(--space-md);
}

.plan-products li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  background: var(--color-bg-alt);
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  color: var(--color-text);
  font-weight: 500;
}

.plan-products li::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-primary);
}

.plan-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: var(--space-sm);
  border-top: 1px dashed var(--color-border);
}

.plan-price-wrap {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.plan-price-old {
  font-size: 1.1rem;
  color: var(--color-text-light);
  text-decoration: line-through;
  text-decoration-color: rgba(220, 38, 38, 0.6);
  text-decoration-thickness: 2px;
}

.plan-boom {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

/* 爆炸贴：两个旋转方块叠出八角星 */
.plan-boom-sticker {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 76px;
  height: 76px;
  text-align: center;
  transform: rotate(-8deg);
  animation: boomPulse 2.2s ease-in-out infinite;
  z-index: 0;
}

.plan-boom-sticker::before,
.plan-boom-sticker::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #f0c896, var(--color-accent-dark));
  border-radius: 18%;
  z-index: -1;
}

.plan-boom-sticker::after {
  transform: rotate(45deg);
}

.plan-boom-sticker i {
  font-style: normal;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.1;
}

.plan-boom-sticker b {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  line-height: 1.1;
}

.plan-boom-sticker i,
.plan-boom-sticker b {
  grid-area: 1 / 1;
  align-self: center;
}

.plan-boom-sticker i { transform: translateY(-0.7em); }
.plan-boom-sticker b { transform: translateY(0.55em); }

@keyframes boomPulse {
  0%, 100% { transform: rotate(-8deg) scale(1); }
  50% { transform: rotate(-8deg) scale(1.09); }
}

.plan-price-new {
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--color-cta);
  line-height: 1;
  letter-spacing: -0.01em;
}

.plan-price-newsub {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-left: 0.15rem;
}

@media (max-width: 640px) {
  .plan-card { padding: var(--space-md); }
  .plan-foot { flex-direction: column; align-items: flex-start; }
}

/* ===== 私塾系列 · 竖排课程目录样式（覆盖上方宫格样式） ===== */
.series-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.series-item {
  display: block;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0;
  padding: 0.85rem 1.25rem;
}

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

.series-item::before {
  display: none;
}

.series-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.1);
}

.series-item-name {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.6;
}

.series-item-prefix {
  color: rgba(255, 255, 255, 0.55);
  font-weight: 400;
}

.series-item-note {
  margin-top: 0.25rem;
  font-size: 0.85rem;
  color: var(--color-accent);
  line-height: 1.6;
  opacity: 0.9;
}

/* ===== 价格与院校规划行式排列 · 微调覆盖 ===== */

/* 深蓝卡上的划线原价用浅色 */
.series-price-old {
  color: rgba(255, 255, 255, 0.45);
}

/* 系列卡惊喜价数字微调间距 */
.series-foot .plan-boom {
  gap: 1rem;
}

/* 院校规划两个产品：改为横版行式排列（与上方系列目录一致） */
.plan-products {
  flex-direction: column;
  flex-wrap: nowrap;
  gap: 0;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.plan-products li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: transparent;
  border-radius: 0;
  border-bottom: 1px solid var(--color-border);
  padding: 0.8rem 1.2rem;
  font-size: 1rem;
}

.plan-products li:last-child {
  border-bottom: none;
}

/* ===== 紧凑版 CTA（产品服务页底部，降低视觉比重） ===== */
.cta-compact {
  padding: var(--space-lg) 0;
}

.cta-compact .cta-card {
  padding: var(--space-lg) var(--space-xl);
}

.cta-compact .cta-card-title {
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
}

.cta-compact .cta-card-desc {
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
}

.cta-compact .cta-buttons .btn-lg {
  padding: 0.65rem 1.6rem;
  font-size: 0.95rem;
}

/* ========================================
   右下角悬浮企业微信咨询按钮（全站跟随）
   ======================================== */
.wechat-float-btn {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 900;
  width: 56px;
  height: 56px;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  box-shadow: 0 6px 20px rgba(30, 58, 138, 0.35);
  display: grid;
  place-items: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.wechat-float-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 26px rgba(30, 58, 138, 0.45);
}

.wechat-float-btn svg {
  width: 28px;
  height: 28px;
  fill: #fff;
}

.wechat-float-pop {
  position: fixed;
  right: 20px;
  bottom: 92px;
  z-index: 901;
  width: 240px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.18);
  padding: var(--space-md);
  text-align: center;
  display: none;
}

.wechat-float-pop.open { display: block; }

.wechat-float-pop-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.wechat-float-pop img {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.wechat-float-pop-name {
  margin-top: var(--space-xs);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.wechat-float-pop-close {
  position: absolute;
  top: 6px;
  right: 10px;
  border: none;
  background: none;
  font-size: 1.1rem;
  color: var(--color-text-light);
  cursor: pointer;
  line-height: 1;
}

@media (max-width: 968px) {
  .wechat-float-btn { right: 14px; bottom: 16px; width: 50px; height: 50px; }
  .wechat-float-pop { right: 14px; bottom: 76px; width: 210px; }
}