/**
 * 卓越IT职业技能培训 — 全站样式
 * 深色科技主题：深灰(#0D1117) + 科技蓝(#1A6BB0) + 橙色点缀(#FF6B35)
 * 纯原生CSS，无框架依赖 | 第三方模板模式 ({pboot:sitedomain}/skin/)
 * 遵循：PBootCMS AI 开发规范与约束 V3.6
 */

/* ============================================================
   Google Fonts — Noto Sans SC (简体中文优化)
   ============================================================ */


/* ============================================================
   CSS 变量体系
   ============================================================ */
:root {
  /* 基底色 — 深色科技 */
  --bg-deep: #0D1117;
  --bg-primary: #111820;
  --bg-card: rgba(255,255,255,0.03);
  --bg-card-hover: rgba(26,107,176,0.06);
  --bg-input: rgba(255,255,255,0.04);

  /* 科技蓝 */
  --tech-blue: #1A6BB0;
  --tech-blue-light: #2196F3;
  --tech-blue-dark: #155190;
  --tech-blue-dim: rgba(26,107,176,0.12);
  --tech-blue-glow: rgba(26,107,176,0.25);

  /* 橙色点缀 */
  --accent-orange: #FF6B35;
  --accent-orange-light: #FF8F60;
  --accent-orange-dim: rgba(255,107,53,0.12);
  --accent-orange-glow: rgba(255,107,53,0.25);

  /* 渐变色 */
  --gradient-blue: linear-gradient(135deg, #1A6BB0, #2196F3);
  --gradient-orange: linear-gradient(135deg, #FF6B35, #FF8F60);
  --gradient-card-border: linear-gradient(135deg, rgba(26,107,176,0.3), rgba(255,107,53,0.2));

  /* 文字色阶 */
  --text-primary: #E6EDF3;
  --text-secondary: #8B949E;
  --text-muted: #484F58;

  /* 边框 */
  --border-subtle: rgba(255,255,255,0.06);
  --border-blue: rgba(26,107,176,0.2);
  --border-orange: rgba(255,107,53,0.2);

  /* 阴影 */
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-blue: 0 0 20px rgba(26,107,176,0.15);
  --shadow-orange: 0 0 20px rgba(255,107,53,0.15);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  /* 间距 */
  --section-py: 90px;
  --container-max: 1200px;
  --header-h: 68px;

  /* 过渡 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;

  /* 字体 */
  --font-heading: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', -apple-system, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
}

/* ============================================================
   全局重置 & 基础
   ============================================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  background: var(--bg-deep);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 80% 50% at 20% 10%, rgba(26,107,176,0.04) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(255,107,53,0.03) 0%, transparent 60%),
    radial-gradient(ellipse 70% 40% at 50% 90%, rgba(26,107,176,0.03) 0%, transparent 60%);
  pointer-events: none;
}

::selection {
  background: rgba(26,107,176,0.3);
  color: #fff;
}

/* 滚动条 */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.15); }

a { color: inherit; text-decoration: none; transition: color var(--duration-fast) var(--ease-out); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
input, textarea, select, button { font-family: inherit; font-size: inherit; }
input::placeholder, textarea::placeholder { color: var(--text-muted); opacity: 1; }

/* ============================================================
   排版
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.02em;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--tech-blue-light);
  margin-bottom: 0.75rem;
  position: relative;
}

.section-tag::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 2px;
  background: var(--accent-orange);
  margin-right: 10px;
  vertical-align: middle;
  border-radius: 1px;
}

.section-title {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

/* ============================================================
   布局容器
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: var(--section-py) 0; }

/* ============================================================
   Header 头部 — 深色固定
   ★ 13.3 dropdown z-index | ★ 13.4 hamburger 独立
   ★ 13.11 白色实底 header (深色主题用深色实底)
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(13,17,23,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.header.scrolled {
  background: rgba(13,17,23,0.97);
  box-shadow: 0 1px 20px rgba(0,0,0,0.5);
}

.header__inner {
  display: flex;
  align-items: center;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  margin-right: auto;
}

.header__logo-icon {
  width: 38px;
  height: 38px;
  background: var(--gradient-blue);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  color: #fff;
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.header__logo-name {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.header__logo-sub {
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--tech-blue-light);
}

/* 主导航 */
.header__nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.header__nav-link {
  padding: 8px 15px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--text-primary);
  background: var(--tech-blue-dim);
}

/* 导航下拉 */
.header__nav-item { position: relative; }

.header__nav-item:hover .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.header__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  padding: 8px 0;
  background: rgba(17,24,32,0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-blue);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 50px rgba(0,0,0,0.6);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--duration-normal) var(--ease-out);
  z-index: 60;
}

.header__dropdown a {
  display: block;
  padding: 9px 18px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

.header__dropdown a:hover {
  color: var(--text-primary);
  background: var(--tech-blue-dim);
}

/* 头部右侧操作区 */
.header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 18px;
}

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--accent-orange);
  color: #fff;
  font-size: 0.84rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.header__cta:hover {
  background: var(--accent-orange-light);
  color: #fff;
  box-shadow: var(--shadow-orange);
  transform: translateY(-1px);
}

/* ============================================================
   汉堡菜单（移动端）★ 独立于 header__actions (13.4)
   ============================================================ */
.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 110;
  margin-left: 8px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--duration-normal) var(--ease-out);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* 移动端侧滑菜单 */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 80%;
  max-width: 340px;
  background: rgba(13,17,23,0.99);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  z-index: 120;
  transform: translateX(-100%);
  transition: transform var(--duration-normal) var(--ease-out);
  overflow-y: auto;
}

.mobile-nav.open { transform: translateX(0); }

.mobile-nav__inner { padding: 24px; padding-top: 80px; }

.mobile-nav__link {
  display: block;
  padding: 14px 16px;
  font-size: 1rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.mobile-nav__link:hover {
  color: var(--text-primary);
  background: var(--tech-blue-dim);
}

.mobile-nav__sub { padding-left: 16px; display: none; }
.mobile-nav__sub.open { display: block; }

.mobile-nav__sub a {
  display: block;
  padding: 10px 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
}

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 115;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.mobile-nav__overlay.show { opacity: 1; pointer-events: auto; }

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner {
  position: relative;
  height: 300px;
  overflow: hidden;
  background: var(--bg-primary);
}

.inner-banner__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.inner-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,17,23,0.7) 0%, rgba(13,17,23,0.4) 50%, var(--bg-deep) 100%);
}

.inner-banner__content {
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.inner-banner__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.inner-banner__subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* 面包屑 */
.breadcrumb-bar {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-subtle);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 13px 24px;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--tech-blue-light); }
.breadcrumb i { font-size: 0.6rem; color: var(--text-muted); }

/* ============================================================
   按钮系统
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
  text-decoration: none;
}

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

.btn--primary:hover {
  box-shadow: var(--shadow-orange);
  transform: translateY(-2px);
  color: #fff;
}

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

.btn--outline:hover {
  border-color: var(--tech-blue-light);
  background: var(--tech-blue-dim);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.btn--ghost {
  background: rgba(255,255,255,0.03);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.btn--ghost:hover {
  background: rgba(255,255,255,0.06);
  color: var(--text-primary);
}

/* CTA 脉冲 */
.btn--primary.pulse {
  animation: btnPulse 2s infinite;
}

@keyframes btnPulse {
  0% { box-shadow: 0 0 0 0 rgba(255,107,53,0.4); }
  70% { box-shadow: 0 0 0 14px rgba(255,107,53,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,107,53,0); }
}

/* ============================================================
   卡片系统
   ============================================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
  display: block;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-blue);
  box-shadow: var(--shadow-card), var(--shadow-blue);
  transform: translateY(-3px);
}

.card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
  background: var(--bg-input);
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.card:hover .card__image img { transform: scale(1.04); }

.card__body { padding: 20px; }

.card__tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--tech-blue-light);
  background: var(--tech-blue-dim);
  border-radius: 4px;
  margin-bottom: 8px;
}

.card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.card__meta span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
  min-width: 0;
}

.card__price {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent-orange);
  margin-top: 8px;
}

/* 光晕边框卡片 */
.card-glow {
  position: relative;
}

.card-glow::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: var(--gradient-card-border);
  z-index: -1;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

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

/* 微光扫过 */
.shimmer-overlay { position: relative; overflow: hidden; }

.shimmer-overlay::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.03) 50%, transparent 100%);
  transform: translateX(-100%) skewX(-15deg);
  pointer-events: none;
}

.shimmer-overlay:hover::after {
  animation: shimmerSweep 0.7s ease-in-out;
}

@keyframes shimmerSweep {
  0% { transform: translateX(-100%) skewX(-15deg); }
  100% { transform: translateX(200%) skewX(-15deg); }
}

/* ============================================================
   首页 — Hero Banner
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero .swiper {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(180deg, rgba(13,17,23,0.2) 0%, rgba(13,17,23,0.1) 40%, rgba(13,17,23,0.88) 100%),
    linear-gradient(90deg, rgba(13,17,23,0.6) 0%, transparent 50%, rgba(13,17,23,0.6) 100%);
}

.hero__content {
  position: relative;
  z-index: 3;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: 100px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
  text-align: left;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 1rem;
  text-shadow: 0 2px 40px rgba(0,0,0,0.6);
  max-width: 700px;
  animation: fadeInUpWord 1s var(--ease-out) both;
}

.hero__title span {
  color: var(--accent-orange);
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255,255,255,0.7);
  margin-bottom: 2rem;
  font-weight: 300;
  max-width: 560px;
  animation: fadeInUpWord 1s var(--ease-out) 0.2s both;
}

.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  animation: fadeInUpWord 0.8s var(--ease-out) 0.4s both;
}

.hero__stats-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 3;
  background: linear-gradient(180deg, transparent, rgba(13,17,23,0.95));
  padding: 32px 0 20px;
}

.hero__stats-row {
  display: flex;
  justify-content: center;
  gap: 48px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  flex-wrap: wrap;
}

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

.hero__stat-num {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-orange);
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Hero Swiper 分页器 */
.hero-pagination {
  display: flex;
  justify-content: flex-start;
  gap: 8px;
  margin-top: 20px;
}

.hero-pagination .swiper-pagination-bullet {
  width: 36px;
  height: 2px;
  border-radius: 1px;
  background: rgba(255,255,255,0.3);
  opacity: 1;
  transition: all var(--duration-normal);
}

.hero-pagination .swiper-pagination-bullet-active {
  width: 56px;
  background: var(--accent-orange);
}

/* 滚动指示器 */
.hero__scroll-indicator {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.35);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: scrollFloat 2s ease-in-out infinite;
}

.hero__scroll-line {
  width: 1px;
  height: 28px;
  background: linear-gradient(180deg, var(--accent-orange), transparent);
}

@keyframes scrollFloat {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

@keyframes fadeInUpWord {
  0% { opacity: 0; transform: translateY(30px); filter: blur(6px); }
  100% { opacity: 1; transform: translateY(0); filter: blur(0); }
}

/* ============================================================
   首页 — 数据看板
   ============================================================ */
.stats-section {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--tech-blue), var(--accent-orange), transparent);
  opacity: 0.4;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  text-align: center;
  padding: 28px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
}

.stat-item:hover {
  border-color: var(--border-blue);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.stat-item__number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--accent-orange);
  line-height: 1;
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}

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

/* ============================================================
   首页 — 核心课程分类（6列网格）
   ============================================================ */
.course-cats {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.course-cat-item {
  text-align: center;
  padding: 28px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

.course-cat-item:hover {
  border-color: var(--border-blue);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-blue);
}

.course-cat-item__icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 12px;
  border-radius: var(--radius-sm);
  background: var(--tech-blue-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  color: var(--tech-blue-light);
  transition: all var(--duration-normal) var(--ease-out);
}

.course-cat-item:hover .course-cat-item__icon {
  background: var(--tech-blue);
  color: #fff;
  box-shadow: var(--shadow-blue);
}

.course-cat-item__name {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.course-cat-item__desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ============================================================
   首页 — 就业服务卡片
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  text-align: center;
  padding: 36px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
}

.service-card:hover {
  border-color: var(--border-blue);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
}

.service-card__icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  border-radius: var(--radius-sm);
  background: var(--accent-orange-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent-orange);
  transition: all var(--duration-normal) var(--ease-out);
}

.service-card:hover .service-card__icon {
  background: var(--accent-orange);
  color: #fff;
  box-shadow: var(--shadow-orange);
}

.service-card__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.service-card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   列表页 — 网格布局
   ============================================================ */
.list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.list-header {
  text-align: center;
  margin-bottom: 40px;
}

.list-header h1 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 0.5rem;
}

/* 子栏目过滤栏 */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  margin-bottom: 32px;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.filter-bar::-webkit-scrollbar { display: none; }

.filter-bar a {
  display: inline-flex;
  padding: 8px 18px;
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  white-space: nowrap;
  transition: all var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}

.filter-bar a:hover,
.filter-bar a.active {
  color: var(--tech-blue-light);
  border-color: var(--tech-blue-light);
  background: var(--tech-blue-dim);
}

/* ============================================================
   详情页
   ============================================================ */
.detail {
  max-width: 900px;
  margin: 0 auto;
}

.detail__header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.detail__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 10px;
}

.detail__meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.detail__meta-row i { margin-right: 4px; color: var(--tech-blue-light); }

/* 扩展参数卡片 */
.detail__params {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
  margin-bottom: 28px;
}

.detail__param {
  padding: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: all var(--duration-fast) var(--ease-out);
}

.detail__param:hover {
  border-color: var(--border-blue);
  background: var(--bg-card-hover);
}

.detail__param-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.detail__param-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  word-break: break-all;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.detail__param-value.highlight {
  color: var(--accent-orange);
  font-size: 1.15rem;
}

/* 正文内容 */
.detail__body {
  color: var(--text-secondary);
  line-height: 2;
  font-size: 0.95rem;
}

.detail__body img {
  border-radius: var(--radius-sm);
  margin: 20px 0;
  max-width: 100%;
}

.detail__body p { margin-bottom: 14px; }
.detail__body h2, .detail__body h3, .detail__body h4 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  margin-top: 28px;
  margin-bottom: 14px;
}

/* 上下篇 */
.detail__pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.86rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 8px;
}

.detail__pager a { color: var(--text-secondary); }
.detail__pager a:hover { color: var(--tech-blue-light); }

/* 相关推荐 */
.related-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 48px 0 20px;
  color: var(--text-primary);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

/* ============================================================
   新闻列表 — 左图右文
   ============================================================ */
.news-list-item {
  display: flex;
  gap: 20px;
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
  margin-bottom: 12px;
}

.news-list-item:hover {
  border-color: var(--border-blue);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.news-list-item__thumb {
  width: 200px;
  height: 140px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-input);
}

.news-list-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-list-item__info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.news-list-item__title {
  font-family: var(--font-heading);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-list-item__date {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.news-list-item__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

/* ============================================================
   联系我们/预约页
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  transition: all var(--duration-fast) var(--ease-out);
}

.contact-info__item:hover {
  border-color: var(--border-blue);
}

.contact-info__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--tech-blue-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tech-blue-light);
  flex-shrink: 0;
  font-size: 1rem;
}

.contact-info__label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.contact-info__value {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* 表单卡片 */
.contact-form-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.84rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

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

.form-control {
  width: 100%;
  padding: 12px 15px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.form-control:focus {
  outline: none;
  border-color: var(--tech-blue-light);
  box-shadow: 0 0 0 3px var(--tech-blue-dim);
}

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

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23484F58' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

/* ============================================================
   搜索页
   ============================================================ */
.search-box {
  max-width: 680px;
  margin: 0 auto;
}

.search-form-row {
  display: flex;
  gap: 10px;
}

.search-input-wrap {
  position: relative;
  flex: 1;
}

.search-input-wrap i {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.95rem;
}

.search-input-wrap input {
  width: 100%;
  padding: 14px 18px 14px 42px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.search-input-wrap input:focus {
  outline: none;
  border-color: var(--tech-blue-light);
  box-shadow: 0 0 0 3px var(--tech-blue-dim);
}

.search-result-item {
  display: flex;
  gap: 16px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
  margin-bottom: 10px;
}

.search-result-item:hover {
  border-color: var(--border-blue);
  background: var(--bg-card-hover);
}

.search-result-item__thumb {
  width: 100px;
  height: 76px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-input);
}

.search-result-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.search-result-item__info { flex: 1; min-width: 0; }
.search-result-item__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-result-item__date {
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.search-result-item__desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   分页
   ============================================================ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 8px;
  font-size: 0.86rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.pagination a:hover {
  background: var(--tech-blue-dim);
  color: var(--text-primary);
}

.pagination .active {
  background: var(--tech-blue);
  color: #fff;
  font-weight: 600;
}

.pagination .disabled {
  color: var(--text-muted);
  pointer-events: none;
}

/* ============================================================
   空状态
   ============================================================ */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}

.empty-state i {
  font-size: 2.5rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  display: block;
}

.empty-state p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ============================================================
   Footer 底部
   ============================================================ */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
}

.footer__top-line {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--tech-blue), var(--accent-orange), transparent);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding: 56px 0 36px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.footer__brand-desc {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 14px 0;
}

.footer__social {
  display: flex;
  gap: 8px;
}

.footer__social a {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.footer__social a:hover {
  background: var(--tech-blue);
  color: #fff;
}

.footer__col-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer__links a {
  font-size: 0.86rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

.footer__links a:hover { color: var(--tech-blue-light); }

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 0.84rem;
  color: var(--text-secondary);
  margin-bottom: 9px;
}

.footer__contact-item i {
  color: var(--tech-blue-light);
  margin-top: 3px;
  flex-shrink: 0;
}

.footer__qrcode {
  width: 110px;
  height: 110px;
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: #999;
}

.footer__bottom {
  border-top: 1px solid var(--border-subtle);
  padding: 18px 0;
}

.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  font-size: 0.78rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 8px;
}

.footer__bottom a { color: var(--text-muted); }
.footer__bottom a:hover { color: var(--tech-blue-light); }

/* ============================================================
   友情链接
   ============================================================ */
.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  padding: 14px 0;
}

.friend-links__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.friend-links a {
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: color var(--duration-fast);
}

.friend-links a:hover { color: var(--tech-blue-light); }

/* ============================================================
   返回顶部
   ============================================================ */
.back-top {
  position: fixed;
  right: 18px;
  bottom: 70px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--tech-blue);
  border: none;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  cursor: pointer;
  z-index: 80;
  opacity: 0;
  pointer-events: none;
  transition: all var(--duration-normal) var(--ease-out);
  box-shadow: var(--shadow-blue);
}

.back-top.show {
  opacity: 1;
  pointer-events: auto;
}

.back-top:hover {
  background: var(--tech-blue-light);
  transform: translateY(-2px);
}

/* 在线客服按钮 */
.online-kf {
  position: fixed;
  right: 18px;
  bottom: 122px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--accent-orange);
  border: none;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  cursor: pointer;
  z-index: 80;
  transition: all var(--duration-normal) var(--ease-out);
  box-shadow: var(--shadow-orange);
  animation: btnPulse 2s infinite;
}

.online-kf:hover {
  background: var(--accent-orange-light);
  transform: scale(1.05);
}

/* ============================================================
   CTA 区块
   ============================================================ */
.cta-section {
  text-align: center;
  padding: 70px 0 80px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(26,107,176,0.08), rgba(255,107,53,0.05));
  border-top: 1px solid var(--border-blue);
  border-bottom: 1px solid var(--border-blue);
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255,107,53,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section__title {
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  margin-bottom: 0.75rem;
  position: relative;
}

.cta-section__lead {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 28px;
}

.cta-section .cta-section__btn {
  font-size: 1rem;
  padding: 14px 32px;
}

/* ============================================================
   课程详情 — 大图区
   ============================================================ */
.detail-hero {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 28px;
}

.detail-hero img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

/* ============================================================
   师资列表 — 头像卡片
   ============================================================ */
.teacher-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
}

.teacher-card:hover {
  border-color: var(--border-blue);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-blue);
}

.teacher-card__avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  margin: 0 auto 14px;
  overflow: hidden;
  border: 2px solid var(--border-blue);
}

.teacher-card__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.teacher-card__name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.teacher-card__title {
  font-size: 0.82rem;
  color: var(--tech-blue-light);
  margin-bottom: 8px;
}

.teacher-card__desc {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   星空/粒子背景
   ============================================================ */
.stars-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

/* ============================================================
   AOS 覆盖
   ============================================================ */
[data-aos] {
  transition-timing-function: var(--ease-out);
}

/* ============================================================
   响应式 — 平板 (768px - 1023px)
   ============================================================ */
@media (max-width: 1023px) {
  :root { --section-py: 64px; }

  .header__nav,
  .header__actions { display: none; }

  .hamburger { display: flex; }

  .course-cats { grid-template-columns: repeat(3, 1fr); }

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

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

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

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

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

  .detail__params { grid-template-columns: repeat(3, 1fr); }

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

  .hero__content { padding-bottom: 80px; }
}

/* ============================================================
   响应式 — 移动端 (< 768px)
   ============================================================ */
@media (max-width: 767px) {
  :root { --section-py: 48px; }

  .hero {
    height: 62vh;
    min-height: 400px;
  }

  .hero__content { padding-bottom: 70px; }
  .hero__stats-bar { display: none; }

  .inner-banner { height: 220px; }

  .course-cats {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .course-cat-item { padding: 14px 4px; }
  .course-cat-item__icon { width: 40px; height: 40px; margin-bottom: 8px; font-size: 1.05rem; }
  .course-cat-item__name { font-size: 0.82rem; margin-bottom: 2px; }
  .course-cat-item__desc { font-size: 0.64rem; }

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

  /* 首页「全方位就业保障」：手机端三个一行、紧凑 */
  .home-services { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .home-services .service-card { padding: 12px 4px; }
  .home-services .service-card__icon { width: 34px; height: 34px; margin-bottom: 6px; font-size: 0.85rem; }
  .home-services .service-card__title { font-size: 0.72rem; margin-bottom: 0; line-height: 1.3; }
  .home-services .service-card__desc { display: none; }

  /* 就业服务页：手机端一行两个、带简介 */
  .career-services { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .career-services .service-card { padding: 16px 10px; }
  .career-services .service-card__icon { width: 44px; height: 44px; margin-bottom: 8px; font-size: 1rem; }
  .career-services .service-card__title { font-size: 0.9rem; margin-bottom: 4px; }
  .career-services .service-card__desc {
    font-size: 0.76rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stat-item { padding: 14px 10px; }
  .stat-item__number { font-size: 1.6rem; margin-bottom: 4px; }
  .stat-item__label { font-size: 0.8rem; }

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

  /* 首页「热门课程」& 课程中心列表：手机端一行两个、紧凑卡片 */
  .course-hot-grid,
  .course-center-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .course-hot-grid .card__body,
  .course-center-grid .card__body { padding: 12px; }
  .course-hot-grid .card__title,
  .course-center-grid .card__title { font-size: 0.92rem; margin-bottom: 4px; }
  .course-hot-grid .card__desc,
  .course-center-grid .card__desc,
  .course-hot-grid .card__meta,
  .course-center-grid .card__meta { display: none; }
  .course-hot-grid .card__price,
  .course-center-grid .card__price { font-size: 1.05rem; margin-top: 6px; }

  /* 首页「学员就业案例」：手机端压缩为横向列表、一行一个 */
  .case-list { grid-template-columns: 1fr; gap: 12px; }
  .case-list .card { display: flex; align-items: center; gap: 14px; padding: 12px; }
  .case-list .card__image { flex: 0 0 auto; width: 84px; height: 84px; aspect-ratio: auto; border-radius: 8px; }
  .case-list .card__body { padding: 0; min-width: 0; }
  .case-list .card__tag { margin-bottom: 4px; font-size: 0.68rem; }
  .case-list .card__title { font-size: 0.92rem; -webkit-line-clamp: 2; margin-bottom: 2px; }
  .case-list .card__desc { font-size: 0.76rem; line-height: 1.4; }
  .case-list .card__meta { margin-top: 6px; padding-top: 6px; font-size: 0.72rem; border-top: 0; }

  /* 首页「行业动态」：手机端压缩为横向一条、一行一个 */
  .news-list-item.home-news { flex-direction: row; align-items: center; gap: 12px; padding: 12px; }
  .home-news .news-list-item__thumb { width: 88px; height: 88px; }
  .home-news .news-list-item__title {
    font-size: 0.92rem;
    white-space: normal;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 2px;
  }
  .home-news .news-list-item__date { font-size: 0.72rem; margin-bottom: 2px; }
  .home-news .news-list-item__desc { font-size: 0.76rem; line-height: 1.4; }

  /* 底部 CTA「学一门技能」：手机端压缩 */
  .cta-section { padding: 44px 0 52px; }
  .cta-section__title { font-size: 1.45rem; margin-bottom: 0.5rem; }
  .cta-section__lead { font-size: 0.85rem; margin-bottom: 16px; }
  .cta-section .cta-section__btn { font-size: 0.85rem; padding: 10px 18px; }

  /* 首页「资深讲师团队」：手机端三个一行、紧凑 */
  .teacher-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .teacher-grid .teacher-card { padding: 14px 4px; }
  .teacher-grid .teacher-card__avatar { width: 46px; height: 46px; margin-bottom: 8px; border-width: 1px; }
  .teacher-grid .teacher-card__name { font-size: 0.78rem; margin-bottom: 2px; }
  .teacher-grid .teacher-card__title { font-size: 0.66rem; margin-bottom: 0; }
  .teacher-grid .teacher-card__desc { display: none; }

  /* 师资团队页：手机端一行两个、带简介 */
  .teacher-list-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .teacher-list-grid .teacher-card { padding: 16px 10px; }
  .teacher-list-grid .teacher-card__avatar { width: 52px; height: 52px; margin-bottom: 8px; border-width: 1px; }
  .teacher-list-grid .teacher-card__name { font-size: 0.92rem; margin-bottom: 2px; }
  .teacher-list-grid .teacher-card__title { font-size: 0.72rem; margin-bottom: 6px; }
  .teacher-list-grid .teacher-card__desc {
    font-size: 0.76rem;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  /* 学员案例页：手机端一行三个、紧凑 */
  .case-center-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .case-center-grid .card__body { padding: 10px 6px; }
  .case-center-grid .card__tag { margin-bottom: 4px; font-size: 0.62rem; }
  .case-center-grid .card__title { font-size: 0.78rem; line-height: 1.35; margin-bottom: 0; -webkit-line-clamp: 2; }
  .case-center-grid .card__desc,
  .case-center-grid .card__meta { display: none; }

  /* 新闻资讯列表页：手机端压缩为横向一条、一行一个 */
  .news-list-item.news-page-list { flex-direction: row; align-items: center; gap: 12px; padding: 12px; }
  .news-page-list .news-list-item__thumb { width: 88px; height: 88px; }
  .news-page-list .news-list-item__title {
    font-size: 0.92rem;
    white-space: normal;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 2px;
  }
  .news-page-list .news-list-item__date { font-size: 0.72rem; margin-bottom: 2px; }
  .news-page-list .news-list-item__desc { font-size: 0.76rem; line-height: 1.4; }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  /* 快速导航：手机端链接排成一行 */
  .footer__links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px 16px;
  }
  .footer__links a { font-size: 0.82rem; }
  .footer__col-title { margin-bottom: 12px; }

  .footer__bottom-inner {
    flex-direction: column;
    text-align: center;
  }

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

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

  .contact-form-card { padding: 24px; }

  .news-list-item { flex-direction: column; }

  .news-list-item__thumb { width: 100%; height: 180px; }

  .card__body { padding: 14px; }

  .detail__pager {
    flex-direction: column;
    gap: 6px;
    text-align: center;
  }

  .back-top { right: 10px; bottom: 50px; }
  .online-kf { right: 10px; bottom: 102px; }

  .hero__scroll-indicator { display: none; }
}

/* ============================================================
   响应式 — 小屏手机 (< 375px)
   ============================================================ */
@media (max-width: 374px) {
  body { font-size: 14px; }
}

/* ============================================================
   偏好：减少动画
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}