/* ===== 大脑营行官网 - 全局样式 ===== */

/* --- CSS Variables --- */
:root {
  --c-primary: #0f2b46;
  --c-primary-light: #1a3a5c;
  --c-accent: #c9a96e;
  --c-accent-light: #d4b87a;
  --c-text-heading: #1a1a2e;
  --c-text-title: #1a1a2e;
  --c-text-body: #4a5568;
  --c-text-secondary: #5a6578;
  --c-text-muted: #718096;
  --c-bg-main: #fafaf8;
  --c-bg-alt: #f5f3ef;
  --c-bg-warm: #f8f6f2;
  --c-bg-dark: #0f2b46;
  --c-success: #38a169;
  --c-border: #e8e4de;
  --c-white: #ffffff;
  --shadow-card: 0 2px 16px rgba(15, 43, 70, 0.06);
  --shadow-hover: 0 8px 32px rgba(15, 43, 70, 0.12);
  --radius-card: 8px;
  --radius-btn: 4px;
  --radius-tag: 2px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --section-gap: 96px;
  --section-gap-mobile: 64px;
}

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--c-bg-main);
  color: var(--c-text-body);
  line-height: 1.8;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }

/* --- Typography --- */
.font-serif {
  font-family: "Noto Serif SC", "SimSun", serif;
}

h1, h2, h3, h4, h5 {
  font-family: "Noto Serif SC", "SimSun", serif;
  color: var(--c-text-heading);
  line-height: 1.4;
  font-weight: 700;
}

/* --- Utility --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

.text-accent { color: var(--c-accent); }
.text-gold { color: var(--c-accent); font-weight: 700; }

/* --- Section Title --- */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header .section-label {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--c-accent);
  font-weight: 600;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 36px;
  margin-bottom: 16px;
  position: relative;
}

.section-header h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  background: var(--c-accent);
  margin: 20px auto 0;
}

.section-header p {
  font-size: 16px;
  color: var(--c-text-muted);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ===== HEADER / NAVIGATION ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(232, 228, 222, 0.6);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(15, 43, 70, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--c-primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-accent);
  font-weight: 800;
  font-size: 18px;
  font-family: "Noto Serif SC", serif;
}

.logo-text {
  font-family: "Noto Serif SC", serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: 2px;
}

.logo-sub {
  font-size: 11px;
  color: var(--c-text-muted);
  letter-spacing: 1px;
  margin-top: -2px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.main-nav a {
  font-size: 15px;
  color: var(--c-text-body);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--c-accent);
  transition: var(--transition);
}

.main-nav a:hover {
  color: var(--c-primary);
}

.main-nav a:hover::after {
  width: 100%;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Contact Button with WeChat QR Code Popup */
.contact-btn-wrapper {
  position: relative;
  display: inline-block;
  z-index: 10; /* 降低层级，确保不遮挡 mobile-toggle */
}

.wechat-qrcode-popup {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 12px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
}

.contact-btn-wrapper:hover .wechat-qrcode-popup {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.qrcode-box {
  background: #fff;
  padding: 16px;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(15, 43, 70, 0.2);
  text-align: center;
  min-width: 200px;
  border: 1px solid var(--c-border);
}

.qrcode-box img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 12px;
  display: block;
}

.qrcode-box p {
  font-size: 13px;
  color: var(--c-text-secondary);
  margin: 0;
  font-weight: 500;
}

.header-phone {
  font-size: 15px;
  color: var(--c-primary);
  font-weight: 600;
  letter-spacing: 0.5px;
  z-index: 10; /* 降低层级，确保不遮挡 mobile-toggle */
}

.header-phone svg {
  width: 16px;
  height: 16px;
  margin-right: 6px;
  vertical-align: middle;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--c-accent);
  color: var(--c-white);
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.5px;
}

.btn-primary:hover {
  background: var(--c-accent-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(201, 169, 110, 0.3);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--c-white);
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.4);
  cursor: pointer;
  transition: var(--transition);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
}

.btn-large {
  padding: 14px 36px;
  font-size: 16px;
}

/* Mobile menu toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  position: relative;
  z-index: 1002; /* 确保按钮可点击 */
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-primary);
  transition: var(--transition);
}

/* ===== HERO SECTION ===== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--c-bg-dark);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('../public/hero-bg.jpeg') center/cover no-repeat;
  opacity: 0.35;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(15, 43, 70, 0.7) 0%,
    rgba(15, 43, 70, 0.5) 50%,
    rgba(15, 43, 70, 0.85) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 120px 24px 80px;
}

.hero-badge {
  display: inline-block;
  background: rgba(201, 169, 110, 0.15);
  border: 1px solid rgba(201, 169, 110, 0.3);
  color: var(--c-accent);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 13px;
  letter-spacing: 2px;
  font-weight: 500;
  margin-bottom: 32px;
}

.hero-title {
  font-size: 52px;
  color: var(--c-white);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 24px;
  letter-spacing: 2px;
}

.hero-title .highlight {
  color: var(--c-accent);
  position: relative;
}

.hero-subtitle {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.9;
  margin-bottom: 48px;
  font-weight: 300;
  letter-spacing: 0.5px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 64px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 56px;
  padding-top: 48px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.hero-stat .number {
  font-size: 42px;
  font-weight: 800;
  color: var(--c-accent);
  font-family: "Noto Serif SC", serif;
  line-height: 1;
}

.hero-stat .number span {
  font-size: 20px;
  font-weight: 400;
}

.hero-stat .label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 8px;
  letter-spacing: 1px;
}

/* ===== HERO CAROUSEL ===== */
.hero-carousel {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  background-size: cover;
  background-position: center;
  background-color: var(--c-bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-slide.active {
  opacity: 1;
  z-index: 1;
}

.hero-slide .hero-overlay {
  z-index: 0;
}

/* Hero固定内容层 - 不随轮播切换 */
.hero-content-fixed {
  position: relative;
  z-index: 5;
  text-align: center;
  max-width: 800px;
  padding: 120px 24px 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

/* Hero fallback背景层 */
.hero-fallback-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-dots {
  position: absolute;
  bottom: 20px; /* 调整到hero-stats下方 */
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 12px;
}

.hero-dot {
  width: 32px;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: all 0.3s;
}

.hero-dot.active {
  background: var(--c-accent);
  width: 48px;
}


/* Hero stats 在轮播模式下的定位 */
.hero-section .hero-stats {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 20;
  padding: 32px 24px;
  background: linear-gradient(to top, rgba(15, 43, 70, 0.9), transparent);
}

/* Hero fallback背景层已在上方定义 */

/* ===== BRAND STORY SECTION ===== */
.brand-section {
  background: var(--c-white);
}

.brand-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

/* 无图片版本：全宽居中布局 */
.brand-grid-centered {
  grid-template-columns: 1fr;
  max-width: 900px;
  margin: 0 auto;
}

.brand-grid-centered .brand-content h3 {
  font-size: 32px;
  margin-bottom: 32px;
}

.brand-intro {
  text-align: center;
  margin-bottom: 48px;
}

.brand-intro p {
  font-size: 17px;
  line-height: 2.1;
  color: var(--c-text-body);
  margin-bottom: 16px;
}

/* 数据卡片矩阵 */
.brand-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 48px 0;
}

.brand-stat-card {
  background: var(--c-bg-alt);
  padding: 32px 20px;
  border-radius: var(--radius-card);
  text-align: center;
  border: 1px solid var(--c-border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.brand-stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-accent), var(--c-primary));
  transform: scaleX(0);
  transition: var(--transition);
}

.brand-stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--c-accent);
}

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

.stat-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--c-primary);
  margin-bottom: 8px;
  line-height: 1;
}

.stat-number span {
  font-size: 18px;
  font-weight: 600;
  color: var(--c-accent);
}

.stat-label {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 6px;
}

.stat-desc {
  font-size: 13px;
  color: var(--c-text-muted);
  line-height: 1.5;
}

/* CTA行动引导 */
.brand-cta {
  text-align: center;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px dashed var(--c-border);
}

.brand-content h3 {
  font-size: 28px;
  margin-bottom: 24px;
  line-height: 1.5;
}

.brand-content p {
  font-size: 16px;
  line-height: 2;
  margin-bottom: 20px;
  color: var(--c-text-body);
}

.brand-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 36px;
}

.brand-value-item {
  padding: 20px;
  background: var(--c-bg-alt);
  border-radius: var(--radius-card);
  border-left: 3px solid var(--c-accent);
}

.brand-value-item h4 {
  font-size: 16px;
  margin-bottom: 6px;
  color: var(--c-primary);
}

.brand-value-item p {
  font-size: 13px;
  color: var(--c-text-muted);
  margin: 0;
  line-height: 1.6;
}

.brand-image {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--c-bg-alt);
}

.brand-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-image::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40%;
  background: linear-gradient(to top, rgba(15, 43, 70, 0.3), transparent);
}

/* ===== ADVANTAGES SECTION ===== */
.advantages-section {
  background: var(--c-bg-alt);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.advantage-card {
  background: var(--c-white);
  padding: 40px 32px;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.advantage-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--c-accent);
  transform: scaleX(0);
  transition: var(--transition);
}

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

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

.advantage-icon {
  width: 56px;
  height: 56px;
  background: rgba(201, 169, 110, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--c-accent);
  font-size: 24px;
}

.advantage-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.advantage-card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-text-muted);
}

/* ===== COURSE SYSTEM SECTION ===== */
.course-section {
  background: var(--c-white);
}

.course-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.course-tab {
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text-body);
  background: var(--c-bg-alt);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}

.course-tab:hover,
.course-tab.active {
  background: #183883;
  color: var(--c-white);
  border-color: #183883;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.course-card {
  background: var(--c-white);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  border: 1px solid var(--c-border);
}

.course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--c-accent);
}

.course-card-image {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.course-card-image .course-icon {
  font-size: 48px;
  opacity: 0.3;
  color: var(--c-accent);
}

.course-card-image .course-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--c-accent);
  color: var(--c-white);
  padding: 4px 12px;
  border-radius: var(--radius-tag);
  font-size: 12px;
  font-weight: 600;
}

.course-card-body {
  padding: 24px;
}

.course-card-body h3 {
  font-size: 18px;
  margin-bottom: 10px;
  line-height: 1.4;
}

.course-card-body p {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.course-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-secondary);
  margin-bottom: 12px;
}

.course-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  padding: 8px 0;
}

.course-price {
  font-family: "Noto Serif SC", serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--c-gold);
}

.course-duration {
  font-size: 13px;
  color: var(--c-text-muted);
  padding: 3px 10px;
  background: var(--c-bg-warm);
  border-radius: 2px;
}

.course-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--c-border);
}

.course-card-footer .audience {
  font-size: 12px;
  color: var(--c-text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.course-card-footer .learn-more {
  font-size: 13px;
  color: var(--c-accent);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

.course-card-footer .learn-more:hover {
  color: var(--c-primary);
}

/* ===== FOUNDER IP SECTION ===== */
.founder-section {
  background: var(--c-bg-dark);
  color: var(--c-white);
  position: relative;
  overflow: hidden;
}

.founder-section .section-header h2 {
  color: var(--c-white);
}

.founder-section .section-header p {
  color: rgba(255, 255, 255, 0.7);
}

.founder-section::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(201, 169, 110, 0.08) 0%, transparent 70%);
}

.founder-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.founder-image {
  position: relative;
}

.founder-image .image-wrapper {
  width: 100%;
  aspect-ratio: 3/4;
  background: linear-gradient(135deg, var(--c-primary-light), #2a4a6c);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 2px solid rgba(201, 169, 110, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.founder-image .image-wrapper .placeholder {
  color: rgba(201, 169, 110, 0.3);
  font-size: 80px;
}

.founder-image .name-plate {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-accent);
  color: var(--c-white);
  padding: 12px 32px;
  border-radius: var(--radius-card);
  text-align: center;
  white-space: nowrap;
  box-shadow: 0 4px 20px rgba(201, 169, 110, 0.3);
}

.founder-image .name-plate h4 {
  font-size: 18px;
  color: var(--c-white);
  margin-bottom: 2px;
}

.founder-image .name-plate span {
  font-size: 12px;
  opacity: 0.9;
}

.founder-info h3 {
  font-size: 32px;
  color: var(--c-white);
  margin-bottom: 8px;
}

.founder-info .title {
  font-size: 16px;
  color: var(--c-accent);
  margin-bottom: 24px;
  font-weight: 500;
}

.founder-info .bio {
  font-size: 15px;
  line-height: 2;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 32px;
}

.founder-achievements {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.founder-achievement-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-card);
  padding: 20px;
}

.founder-achievement-item .num {
  font-size: 28px;
  font-weight: 800;
  color: var(--c-accent);
  font-family: "Noto Serif SC", serif;
}

.founder-achievement-item .desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 4px;
}

/* ===== FOUNDER IP SECTION ===== */
.founder-ip-section {
  background: linear-gradient(135deg, #0f2b46 0%, #1a3a5c 50%, #0d2240 100%);
  position: relative;
  overflow: hidden;
}

.founder-ip-section::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(201, 169, 110, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.founder-ip-section::after {
  content: "";
  position: absolute;
  bottom: -15%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.founder-ip-card {
  display: flex;
  align-items: center;
  gap: 64px;
  position: relative;
  z-index: 1;
}

/* 左侧内容区 */
.founder-ip-content {
  flex: 1;
}

.founder-ip-tag {
  display: inline-block;
  background: rgba(201, 169, 110, 0.15);
  border: 1px solid rgba(201, 169, 110, 0.3);
  color: var(--c-accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 20px;
}

.founder-ip-name {
  font-size: 42px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
  letter-spacing: 2px;
  line-height: 1.2;
}

.founder-ip-role {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 28px;
  font-weight: 400;
  letter-spacing: 1px;
}

/* 核心方法论 */
.founder-ip-method {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-left: 3px solid var(--c-accent);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 24px;
}

.method-label {
  font-size: 12px;
  color: var(--c-accent);
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 6px;
  text-transform: uppercase;
}

.method-text {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.7;
  margin: 0;
  font-weight: 500;
}

.founder-ip-bio {
  font-size: 15px;
  line-height: 2;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 24px;
}

/* 成就标签 */
.founder-ip-achievements {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.achievement-tag {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 50px;
  font-weight: 500;
}

/* CTA按钮 */
.founder-ip-cta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.btn-outline-light {
  display: inline-flex;
  align-items: center;
  padding: 12px 28px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: rgba(255, 255, 255, 0.9);
  border-radius: 50px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  background: transparent;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

/* 右侧头像区 */
.founder-ip-avatar {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.avatar-wrapper {
  width: 320px;
  height: 380px;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-wrapper::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40%;
  background: linear-gradient(to top, rgba(15, 43, 70, 0.6), transparent);
}

/* 引用语 */
.founder-quote {
  text-align: center;
  max-width: 280px;
}

.founder-quote svg {
  color: var(--c-accent);
  margin-bottom: 8px;
}

.founder-quote p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.8;
  font-style: italic;
  margin: 0;
}

/* ===== DATA / NUMBERS SECTION ===== */
.data-section {
  background: var(--c-bg-alt);
  position: relative;
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.data-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--c-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

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

.data-card .data-number {
  font-size: 48px;
  font-weight: 800;
  color: var(--c-primary);
  font-family: "Noto Serif SC", serif;
  line-height: 1;
  margin-bottom: 4px;
}

.data-card .data-number .unit {
  font-size: 20px;
  color: var(--c-accent);
  font-weight: 600;
}

.data-card .data-label {
  font-size: 14px;
  color: var(--c-text-muted);
  margin-top: 8px;
}

/* ===== CASES SECTION ===== */
.cases-section {
  background: var(--c-white);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.case-card {
  padding: 0;
  background: var(--c-bg-main);
  border-radius: var(--radius-card);
  border: 1px solid var(--c-border);
  transition: var(--transition);
  text-align: left;
  overflow: hidden;
}

.case-card .case-cover {
  width: 100%;
  height: 160px;
  background-size: cover;
  background-position: center;
  background-color: var(--c-primary);
  position: relative;
}

.case-card .case-cover .case-industry-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--c-accent);
  color: #fff;
  padding: 3px 10px;
  border-radius: 2px;
  font-size: 12px;
  font-weight: 500;
}

.case-card .case-body {
  padding: 20px;
}

.case-card:hover {
  border-color: var(--c-accent);
  background: var(--c-white);
  box-shadow: var(--shadow-card);
}

.case-card .case-industry {
  font-size: 13px;
  color: var(--c-accent);
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.case-card .case-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--c-text-heading);
  margin-bottom: 6px;
}

.case-card .case-result {
  font-size: 13px;
  color: var(--c-text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== TESTIMONIALS SECTION ===== */
.testimonials-section {
  background: var(--c-bg-alt);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  background: var(--c-white);
  padding: 36px;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  position: relative;
}

.testimonial-card::before {
  content: "\201C";
  font-size: 72px;
  color: var(--c-accent);
  opacity: 0.2;
  position: absolute;
  top: 16px;
  left: 24px;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-card .quote {
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-text-body);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
  font-style: italic;
  display: -webkit-box;
  -webkit-line-clamp: 6;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  min-height: 86px;
  cursor: help;
  transition: all 0.3s ease;
}

.testimonial-card .quote:hover {
  color: var(--c-primary);
}

.testimonial-card .author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--c-border);
}

.testimonial-card .author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-accent);
  font-weight: 700;
  font-size: 16px;
}

.testimonial-card .author-info .name {
  font-size: 15px;
  font-weight: 600;
  color: var(--c-text-heading);
}

.testimonial-card .author-info .role {
  font-size: 12px;
  color: var(--c-text-muted);
}

/* 截图展示样式 */
.testimonial-card .screenshot-container {
  margin: 16px 0;
  position: relative;
  cursor: pointer;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--c-border);
  transition: var(--transition);
}

.testimonial-card .screenshot-container:hover {
  border-color: var(--c-accent);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.testimonial-card .screenshot-img {
  width: 100%;
  height: auto;
  max-height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.testimonial-card .screenshot-container:hover .screenshot-img {
  transform: scale(1.02);
}

.testimonial-card .screenshot-hint {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  color: white;
  font-size: 12px;
  padding: 20px 12px 8px;
  text-align: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.testimonial-card .screenshot-container:hover .screenshot-hint {
  opacity: 1;
}

/* 截图弹窗样式 */
.screenshot-modal {
  display: none;
  position: fixed;
  z-index: 10000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.screenshot-modal-content {
  position: relative;
  max-width: 90%;
  max-height: 90%;
  animation: modalZoomIn 0.3s ease;
}

@keyframes modalZoomIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.screenshot-modal-img {
  max-width: 100%;
  max-height: 90vh;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.screenshot-close {
  position: absolute;
  top: -40px;
  right: 0;
  color: #fff;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  transition: color 0.3s ease;
  line-height: 1;
}

.screenshot-close:hover,
.screenshot-close:focus {
  color: var(--c-accent);
}

/* 移动端适配 */
@media (max-width: 768px) {
  .testimonial-card .screenshot-img {
    max-height: 150px;
  }
  
  .screenshot-modal-content {
    max-width: 95%;
  }
  
  .screenshot-close {
    top: -30px;
    font-size: 32px;
  }
}

/* ===== CONSULT MODALS ===== */
.consult-modal {
  display: none;
  position: fixed;
  z-index: 10000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(15, 43, 70, 0.85);
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(4px);
}

.consult-modal-content {
  position: relative;
  background: #fff;
  border-radius: 16px;
  max-width: 480px;
  width: 100%;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: modalSlideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalSlideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.consult-modal-close {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 32px;
  color: var(--c-text-muted);
  cursor: pointer;
  transition: all 0.3s;
  line-height: 1;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.consult-modal-close:hover {
  background: var(--c-bg-alt);
  color: var(--c-primary);
}

/* WeChat Modal */
.wechat-modal {
  text-align: center;
}

.wechat-modal-header {
  margin-bottom: 32px;
}

.wechat-modal-header svg {
  margin-bottom: 16px;
}

.wechat-modal-header h3 {
  font-size: 24px;
  color: var(--c-text-heading);
  margin: 0;
}

.wechat-qrcode {
  margin: 24px auto;
  padding: 16px;
  background: var(--c-bg-alt);
  border-radius: 12px;
  display: inline-block;
}

.wechat-qrcode img {
  width: 200px;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  display: block;
}

.wechat-tip {
  font-size: 15px;
  color: var(--c-text-secondary);
  margin: 20px 0;
  line-height: 1.6;
}

.wechat-footer {
  display: flex;
  justify-content: center;
  gap: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--c-border);
  font-size: 13px;
  color: var(--c-text-muted);
}

/* Consult Form Modal */
.consult-form-header {
  text-align: center;
  margin-bottom: 32px;
}

.consult-form-header h3 {
  font-size: 24px;
  color: var(--c-text-heading);
  margin-bottom: 8px;
}

.consult-form-header p {
  font-size: 14px;
  color: var(--c-text-secondary);
  margin: 0;
}

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

#consultForm label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text-heading);
  margin-bottom: 8px;
}

#consultForm input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  font-size: 15px;
  transition: all 0.3s;
  box-sizing: border-box;
}

#consultForm input:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.1);
}

#consultForm input::placeholder {
  color: var(--c-text-light);
}

.btn-block {
  width: 100%;
  justify-content: center;
  padding: 14px 24px;
  font-size: 16px;
}

.consult-form-footer {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--c-border);
  text-align: center;
}

.consult-form-footer p {
  font-size: 13px;
  color: var(--c-text-muted);
  margin-bottom: 12px;
}

.consult-form-footer img {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.3s;
  border: 2px solid transparent;
}

.consult-form-footer img:hover {
  transform: scale(1.05);
  border-color: var(--c-accent);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .consult-modal-content {
    padding: 32px 24px;
    margin: 20px;
  }
  
  .wechat-qrcode img {
    width: 160px;
    height: 160px;
  }
  
  .wechat-footer {
    flex-direction: column;
    gap: 8px;
  }
}

/* ===== NEWS SECTION ===== */
.news-section {
  background: var(--c-white);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

/* ===== 有封面图的大卡片布局 ===== */
.news-card-large {
  display: flex;
  flex-direction: column;
  padding: 0;
  background: var(--c-bg-main);
  border-radius: var(--radius-card);
  border: 1px solid var(--c-border);
  transition: var(--transition);
  overflow: hidden;
}

.news-card-large .news-cover-large {
  width: 100%;
  aspect-ratio: 16/9;
  background-size: cover;
  background-position: center;
  background-color: var(--c-primary);
  position: relative;
}

.news-card-large .news-cover-large::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(to top, rgba(0,0,0,0.1), transparent);
}

.news-card-large .news-content-large {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card-large h3 {
  font-size: 18px;
  margin-bottom: 12px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--c-text-heading);
}

.news-card-large p {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.news-card-large .news-meta-large {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--c-border);
}

.news-card-large .news-date-text-large {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--c-text-muted);
  font-weight: 500;
}

.news-card-large .news-date-text-large svg {
  opacity: 0.7;
}

.news-card-large:hover {
  border-color: var(--c-accent);
  box-shadow: var(--shadow-card);
  transform: translateY(-4px);
}

/* ===== 无封面图的日期卡片布局（保留原样式）===== */
.news-card-date {
  display: flex;
  gap: 24px;
  padding: 28px;
  background: var(--c-bg-main);
  border-radius: var(--radius-card);
  border: 1px solid var(--c-border);
  transition: var(--transition);
}

.news-card-date .news-date {
  flex-shrink: 0;
  width: 64px;
  text-align: center;
}

.news-card-date .news-date .day {
  font-size: 32px;
  font-weight: 800;
  color: var(--c-primary);
  line-height: 1;
  font-family: "Noto Serif SC", serif;
}

.news-card-date .news-date .month {
  font-size: 13px;
  color: var(--c-text-muted);
  margin-top: 4px;
}

.news-card-date .news-content h3 {
  font-size: 17px;
  margin-bottom: 10px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-date .news-content p {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-date .news-meta {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid rgba(232, 228, 222, 0.5);
}

.news-card-date .news-date-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--c-text-muted);
  font-weight: 500;
}

.news-card-date .news-date-text svg {
  opacity: 0.7;
}

.news-card-date:hover {
  border-color: var(--c-accent);
  box-shadow: var(--shadow-card);
}

/* ===== CTA SECTION ===== */
.cta-section {
  background: var(--c-bg-dark);
  position: relative;
  overflow: hidden;
  padding: 80px 0;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('../img/brain-pattern.jpeg') center/cover no-repeat;
  opacity: 0.1;
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 36px;
  color: var(--c-white);
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 40px;
  line-height: 1.8;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 32px;
}

.cta-contact {
  display: flex;
  justify-content: center;
  gap: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.cta-contact-item {
  text-align: center;
}

.cta-contact-item .label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 4px;
}

.cta-contact-item .value {
  font-size: 16px;
  color: var(--c-accent);
  font-weight: 600;
}

/* ===== FOOTER ===== */
.site-footer,
.footer {
  background: #0a1f33;
  color: rgba(255, 255, 255, 0.6);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 48px;
}

.footer-brand .logo-text {
  color: var(--c-white);
  font-size: 24px;
  margin-bottom: 16px;
}

.footer-brand .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .logo .logo-name {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: #fff;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--c-accent);
  color: var(--c-white);
}

.footer-col h4 {
  color: var(--c-white);
  font-size: 16px;
  margin-bottom: 20px;
  font-weight: 600;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition);
}

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

/* Footer links (used in sub-pages) */
.footer-links h4 {
  color: var(--c-white);
  font-size: 16px;
  margin-bottom: 20px;
  font-weight: 600;
}

.footer-links a {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition);
  margin-bottom: 10px;
  text-decoration: none;
}

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

.footer-contact h4 {
  color: var(--c-white);
  font-size: 16px;
  margin-bottom: 20px;
  font-weight: 600;
}

.footer-contact p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 8px;
}

.footer-contact .footer-phone {
  font-size: 20px;
  color: var(--c-accent);
  font-weight: 700;
  font-family: var(--font-sans);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.4);
}

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

.footer-legal {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.4);
  transition: color 0.3s;
}

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

.footer-qualifications {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  justify-content: center;
}

.footer-qualifications span {
  color: rgba(255, 255, 255, 0.3);
  font-size: 11px;
  white-space: nowrap;
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-in-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ===== FLOATING CTA ===== */
.floating-cta {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.floating-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  border: none;
  font-size: 20px;
}

.floating-btn.phone-btn {
  background: var(--c-accent);
  color: var(--c-white);
}

.floating-btn.wechat-btn {
  background: var(--c-success);
  color: var(--c-white);
}

.floating-btn.top-btn {
  background: var(--c-white);
  color: var(--c-primary);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

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

.floating-btn:hover {
  transform: scale(1.1);
}

/* Floating Button with WeChat QR Code Popup */
.floating-btn-wrapper {
  position: relative;
}

.floating-wechat-popup {
  position: absolute;
  top: 50%;
  right: 100%;
  margin-right: 12px;
  transform: translateY(-50%) translateX(10px);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1000;
}

.floating-btn-wrapper:hover .floating-wechat-popup {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(0);
}

.floating-wechat-popup .qrcode-box {
  background: #fff;
  padding: 16px;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(15, 43, 70, 0.25);
  text-align: center;
  min-width: 200px;
  border: 1px solid var(--c-border);
}

.floating-wechat-popup .qrcode-box img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 12px;
  display: block;
}

.floating-wechat-popup .qrcode-box p {
  font-size: 13px;
  color: var(--c-text-secondary);
  margin: 0;
  font-weight: 500;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero-title { font-size: 40px; }
  .brand-grid { grid-template-columns: 1fr; gap: 40px; }
  .brand-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .founder-ip-card { flex-direction: column-reverse; gap: 40px; text-align: center; }
  .founder-ip-content { text-align: center; }
  .founder-ip-achievements { justify-content: center; }
  .founder-ip-cta { justify-content: center; }
  .founder-ip-method { text-align: left; }
  .avatar-wrapper { width: 260px; height: 320px; margin: 0 auto; }
  .founder-grid { grid-template-columns: 1fr; gap: 40px; }
  .founder-image { max-width: 320px; margin: 0 auto; }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .course-grid { grid-template-columns: repeat(2, 1fr); }
  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root {
    --section-gap: 64px;
  }

  /* 防止移动端横向滚动 */
  html, body {
    overflow-x: hidden;
    width: 100%;
  }

  .main-nav { display: none; }
  .header-phone { display: none; }
  .header-cta { display: none !important; } /* 移动端隐藏 header-cta */
  .mobile-toggle { 
    display: flex;
    margin-left: auto; /* 确保推到最右边 */
  }

  /* 移动端 header-inner 布局优化 */
  .header-inner {
    padding: 0 16px; /* 减小padding */
  }

  .mobile-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%; /* 明确设置宽度 */
    max-width: 100vw; /* 防止超出视口 */
    background: var(--c-white);
    padding: 24px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    z-index: 1001; /* 提升到高于header的z-index */
    overflow-x: hidden; /* 防止横向滚动 */
    box-sizing: border-box; /* 确保padding不增加宽度 */
  }

  .mobile-nav.open { display: block; }

  .mobile-nav a {
    display: block;
    padding: 14px 0;
    font-size: 16px;
    color: var(--c-text-body);
    border-bottom: 1px solid var(--c-border);
    text-decoration: none; /* 确保链接没有下划线 */
    word-break: break-word; /* 防止长文本溢出 */
    white-space: nowrap; /* 防止换行 */
    overflow: hidden; /* 隐藏溢出内容 */
    text-overflow: ellipsis; /* 显示省略号 */
  }

  .hero-title { font-size: 32px; }
  .hero-subtitle { font-size: 16px; }
  .hero-stats { flex-direction: column; gap: 24px; padding: 20px 16px; }
  .hero-actions { flex-direction: column; }
  .hero-dots { bottom: 20px; } /* 调整到hero-stats下方 */
  .hero-arrow { width: 36px; height: 36px; font-size: 14px; }
  .hero-arrow-left { left: 12px; }
  .hero-arrow-right { right: 12px; }

  .section-header h2 { font-size: 28px; }

  .advantages-grid { grid-template-columns: 1fr; }
  .course-grid { grid-template-columns: 1fr; }
  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }

  /* 新闻大卡片移动端优化 */
  .news-card-large h3 {
    font-size: 16px;
  }
  .news-card-large p {
    font-size: 13px;
    -webkit-line-clamp: 2;
  }
  .news-card-large .news-content-large {
    padding: 20px;
  }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

  /* Footer brand 移动端居中 */
  .footer-brand {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .footer-brand .logo {
    justify-content: center;
  }
  .footer-brand p {
    text-align: center;
  }
  .footer-social {
    justify-content: center;
  }

  /* Footer columns 移动端居中 */
  .footer-col,
  .footer-links,
  .footer-contact {
    text-align: center;
  }
  .footer-col h4,
  .footer-links h4,
  .footer-contact h4 {
    text-align: center;
  }

  .cta-actions { flex-direction: column; align-items: center; }
  .cta-contact { flex-direction: column; gap: 20px; }

  .founder-achievements { grid-template-columns: 1fr; }
  .brand-values { grid-template-columns: 1fr; }

  /* 创始人IP板块移动端 */
  .founder-ip-name { font-size: 28px; }
  .founder-ip-role { font-size: 15px; margin-bottom: 20px; }
  .founder-ip-bio { font-size: 14px; }
  .avatar-wrapper { width: 200px; height: 260px; }
  .founder-ip-achievements { gap: 8px; }
  .achievement-tag { font-size: 12px; padding: 5px 12px; }
  .founder-ip-cta { flex-direction: column; align-items: center; }
  .founder-ip-cta .btn-outline-light { margin-left: 0 !important; }
  .founder-quote p { font-size: 13px; }
  
  /* 关于我们数据卡片移动端 */
  .brand-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .brand-stat-card { padding: 24px 16px; }
  .stat-number { font-size: 28px; }
  .stat-label { font-size: 14px; }
  .stat-desc { font-size: 12px; }
  .brand-intro p { font-size: 15px; }
  .brand-cta { flex-direction: column; gap: 12px; }
  .brand-cta .btn-outline { margin-left: 0 !important; }

  .floating-cta { bottom: 20px; right: 20px; }
}

/* ================================================================
   DETAIL PAGE STYLES
   ================================================================ */

/* --- Page Hero Banner (sub-pages) --- */
.page-hero {
  position: relative;
  background: var(--c-bg-dark);
  padding: 140px 24px 72px;
  text-align: center;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('../public/brain-pattern.jpeg') center/cover no-repeat;
  opacity: 0.08;
}

.page-hero .breadcrumb {
  position: relative;
  z-index: 1;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 20px;
}

.page-hero .breadcrumb a {
  color: rgba(255,255,255,0.6);
}

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

.page-hero .breadcrumb .sep {
  margin: 0 8px;
  opacity: 0.4;
}

.page-hero h1 {
  position: relative;
  z-index: 1;
  font-size: 40px;
  color: var(--c-white);
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.page-hero p {
  position: relative;
  z-index: 1;
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ===== MENTORS PAGE ===== */
.mentors-intro {
  background: var(--c-white);
  padding: 80px 0;
}

.mentors-intro .intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.mentors-intro .intro-text h2 {
  font-size: 32px;
  margin-bottom: 20px;
}

.mentors-intro .intro-text p {
  font-size: 16px;
  line-height: 2;
  color: var(--c-text-body);
  margin-bottom: 16px;
}

.mentors-intro .intro-stats {
  display: flex;
  gap: 32px;
  margin-top: 32px;
}

.mentors-intro .intro-stats .stat {
  text-align: center;
}

.mentors-intro .intro-stats .stat .num {
  font-size: 36px;
  font-weight: 800;
  color: var(--c-accent);
  font-family: "Noto Serif SC", serif;
  line-height: 1;
}

.mentors-intro .intro-stats .stat .label {
  font-size: 13px;
  color: var(--c-text-muted);
  margin-top: 6px;
}

.mentors-intro .intro-image {
  border-radius: var(--radius-card);
  overflow: hidden;
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
}

.mentors-intro .intro-image svg {
  width: 80px;
  height: 80px;
  color: rgba(201,169,110,0.2);
}

/* Mentor list */
.mentors-list {
  background: var(--c-bg-alt);
  padding: 80px 0;
}

.mentor-profile {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 48px;
  background: var(--c-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  margin-bottom: 40px;
  transition: var(--transition);
}

.mentor-profile:hover {
  box-shadow: var(--shadow-hover);
}

.mentor-profile:last-child {
  margin-bottom: 0;
}

.mentor-photo {
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  text-align: center;
  position: relative;
}

.mentor-photo .avatar-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(201,169,110,0.15);
  border: 3px solid rgba(201,169,110,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.mentor-photo .avatar-circle svg {
  width: 48px;
  height: 48px;
  color: var(--c-accent);
}

.mentor-photo .mentor-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--c-white);
  font-family: "Noto Serif SC", serif;
  margin-bottom: 6px;
}

.mentor-photo .mentor-title {
  font-size: 13px;
  color: var(--c-accent);
  font-weight: 500;
  margin-bottom: 16px;
}

.mentor-photo .mentor-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.mentor-photo .mentor-tags span {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.8);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 12px;
}

.mentor-details {
  padding: 40px 40px 40px 0;
}

.mentor-details h3 {
  font-size: 20px;
  margin-bottom: 16px;
  color: var(--c-primary);
}

.mentor-details .bio {
  font-size: 15px;
  line-height: 2;
  color: var(--c-text-body);
  margin-bottom: 24px;
}

.mentor-details .expertise {
  margin-bottom: 24px;
}

.mentor-details .expertise h4 {
  font-size: 15px;
  color: var(--c-text-heading);
  margin-bottom: 12px;
  font-weight: 600;
}

.mentor-details .expertise-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mentor-details .expertise-list span {
  background: rgba(201,169,110,0.1);
  color: var(--c-accent);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid rgba(201,169,110,0.2);
}

.mentor-details .achievements {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.mentor-details .achievement-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--c-text-body);
  line-height: 1.6;
}

.mentor-details .achievement-item .check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: rgba(56,161,105,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-success);
  margin-top: 2px;
}

.mentor-details .achievement-item .check svg {
  width: 12px;
  height: 12px;
}

/* ===== COURSE DETAIL PAGE ===== */
.course-detail-hero {
  background: var(--c-bg-dark);
  padding: 140px 24px 64px;
  position: relative;
  overflow: hidden;
}

.course-detail-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,43,70,0.95), rgba(26,58,92,0.9));
}

.course-detail-inner {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
}

.course-detail-hero .breadcrumb {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 24px;
}

.course-detail-hero .breadcrumb a {
  color: rgba(255,255,255,0.6);
}

.course-detail-hero .breadcrumb a:hover {
  color: var(--c-accent);
}

.course-detail-hero .breadcrumb .sep {
  margin: 0 8px;
  opacity: 0.4;
}

.course-detail-hero .course-tag-line {
  display: inline-block;
  background: var(--c-accent);
  color: var(--c-white);
  padding: 6px 16px;
  border-radius: var(--radius-tag);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.course-detail-hero h1 {
  font-size: 40px;
  color: var(--c-white);
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.course-detail-hero .course-desc {
  font-size: 17px;
  color: rgba(255,255,255,0.75);
  max-width: 700px;
  line-height: 1.9;
  margin-bottom: 32px;
}

.course-detail-meta {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.course-detail-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
}

.course-detail-meta .meta-item svg {
  width: 18px;
  height: 18px;
  color: var(--c-accent);
}

/* Course detail body */
.course-detail-body {
  background: var(--c-white);
  padding: 64px 0;
}

.course-detail-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 48px;
}

.course-main-content h2 {
  font-size: 24px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--c-border);
  position: relative;
}

.course-main-content h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--c-accent);
}

.course-main-content h3 {
  font-size: 18px;
  margin: 32px 0 16px;
  color: var(--c-primary);
}

.course-main-content p {
  font-size: 15px;
  line-height: 2;
  color: var(--c-text-body);
  margin-bottom: 16px;
}

.course-main-content .module-list {
  margin: 20px 0 32px;
}

.course-main-content .module-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--c-bg-main);
  border-radius: var(--radius-card);
  margin-bottom: 12px;
  border: 1px solid var(--c-border);
  transition: var(--transition);
}

.course-main-content .module-item:hover {
  border-color: var(--c-accent);
  box-shadow: var(--shadow-card);
}

.course-main-content .module-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--c-primary);
  color: var(--c-accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  font-family: "Noto Serif SC", serif;
}

.course-main-content .module-info h4 {
  font-size: 16px;
  color: var(--c-text-heading);
  margin-bottom: 4px;
}

.course-main-content .module-info p {
  font-size: 13px;
  color: var(--c-text-muted);
  margin: 0;
  line-height: 1.6;
}

/* Course sidebar */
.course-sidebar {
  position: sticky;
  top: 96px;
  align-self: start;
}

.sidebar-card {
  background: var(--c-bg-main);
  border-radius: var(--radius-card);
  border: 1px solid var(--c-border);
  padding: 32px;
  margin-bottom: 24px;
}

.sidebar-card h3 {
  font-size: 18px;
  margin-bottom: 20px;
  color: var(--c-primary);
}

.sidebar-card .info-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px dashed var(--c-border);
  font-size: 14px;
}

.sidebar-card .info-row:last-child {
  border-bottom: none;
}

.sidebar-card .info-row .label {
  color: var(--c-text-muted);
}

.sidebar-card .info-row .value {
  color: var(--c-text-heading);
  font-weight: 600;
}

.sidebar-card .sidebar-cta {
  display: block;
  width: 100%;
  text-align: center;
  margin-top: 24px;
}

.sidebar-card .related-list {
  list-style: none;
}

.sidebar-card .related-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--c-border);
}

.sidebar-card .related-list li:last-child {
  border-bottom: none;
}

.sidebar-card .related-list li a {
  font-size: 14px;
  color: var(--c-text-body);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-card .related-list li a:hover {
  color: var(--c-accent);
}

.sidebar-card .related-list li a::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--c-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ===== NEWS DETAIL PAGE ===== */
.news-detail-body {
  background: var(--c-white);
  padding: 64px 0;
}

.news-detail-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
}

.article-content {
  max-width: 100%;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--c-border);
  flex-wrap: wrap;
}

.article-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--c-text-muted);
}

.article-meta .meta-item svg {
  width: 14px;
  height: 14px;
}

.article-content .article-body h2 {
  font-size: 24px;
  margin: 40px 0 16px;
  color: var(--c-primary);
}

.article-content .article-body h2:first-child {
  margin-top: 0;
}

.article-content .article-body p {
  font-size: 16px;
  line-height: 2;
  color: var(--c-text-body);
  margin-bottom: 20px;
}

.article-content .article-body blockquote {
  background: var(--c-bg-alt);
  border-left: 4px solid var(--c-accent);
  padding: 24px 28px;
  margin: 28px 0;
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  font-style: italic;
  color: var(--c-text-heading);
  font-size: 16px;
  line-height: 1.9;
}

.article-content .article-body ul {
  margin: 16px 0 24px 20px;
  list-style: disc;
}

.article-content .article-body ul li {
  font-size: 15px;
  line-height: 2;
  color: var(--c-text-body);
  margin-bottom: 8px;
}

.article-content .article-body .highlight-box {
  background: rgba(201,169,110,0.08);
  border: 1px solid rgba(201,169,110,0.2);
  border-radius: var(--radius-card);
  padding: 24px 28px;
  margin: 28px 0;
}

.article-content .article-body .highlight-box h4 {
  color: var(--c-accent);
  font-size: 16px;
  margin-bottom: 12px;
}

.article-content .article-body .highlight-box p {
  margin-bottom: 0;
  font-size: 15px;
}

.article-tags {
  display: flex;
  gap: 8px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--c-border);
  flex-wrap: wrap;
}

.article-tags span {
  background: var(--c-bg-alt);
  color: var(--c-text-muted);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  border: 1px solid var(--c-border);
}

/* Article Keywords - Professional Style */
.article-keywords {
  margin-top: 48px;
  padding: 32px;
  background: linear-gradient(135deg, rgba(15,43,70,0.02) 0%, rgba(201,169,110,0.05) 100%);
  border-radius: 12px;
  border: 1px solid var(--c-border);
}

.keywords-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--c-accent);
}

.keywords-label svg {
  color: var(--c-accent);
  flex-shrink: 0;
}

.keywords-label span {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text-heading);
  letter-spacing: 0.5px;
}

.keyword-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.keyword-tags span {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  background: #fff;
  color: var(--c-text-body);
  border: 1px solid var(--c-border);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(15,43,70,0.04);
}

.keyword-tags span:hover {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(15,43,70,0.15);
}

.keyword-tags span::before {
  content: "#";
  margin-right: 6px;
  color: var(--c-accent);
  font-weight: 700;
}

.keyword-tags span:hover::before {
  color: rgba(255,255,255,0.8);
}

/* Article sidebar */
.article-sidebar .sidebar-card .news-list li {
  padding: 14px 0;
}

.article-sidebar .sidebar-card .news-list li a {
  font-size: 14px;
  color: var(--c-text-body);
  line-height: 1.6;
  display: block;
}

.article-sidebar .sidebar-card .news-list li a:hover {
  color: var(--c-accent);
}

.article-sidebar .sidebar-card .news-list li .date {
  font-size: 12px;
  color: var(--c-text-muted);
  margin-top: 4px;
}

/* ===== DETAIL PAGE RESPONSIVE ===== */
@media (max-width: 1024px) {
  .mentors-intro .intro-grid { grid-template-columns: 1fr; gap: 32px; }
  .mentor-profile { grid-template-columns: 260px 1fr; gap: 0; }
  .course-detail-grid { grid-template-columns: 1fr; }
  .course-sidebar { position: static; }
  .news-detail-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .page-hero { padding: 120px 24px 56px; }
  .page-hero h1 { font-size: 28px; }

  .mentor-profile { grid-template-columns: 1fr; }
  .mentor-details { padding: 28px; }
  .mentor-details .achievements { grid-template-columns: 1fr; }

  .course-detail-hero h1 { font-size: 28px; }
  .course-detail-meta { flex-direction: column; gap: 12px; }

  .mentors-intro .intro-stats { flex-wrap: wrap; gap: 20px; }
}

/* ============================================
   CASE DETAIL PAGE
   ============================================ */
.case-detail-section { padding: 80px 0; }
.case-detail-layout { display: grid; grid-template-columns: 1fr 360px; gap: 48px; align-items: start; }
.case-detail-main { min-width: 0; }
.case-header { margin-bottom: 40px; }
.case-header-top { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.case-industry-badge { background: var(--c-accent); color: #fff; padding: 4px 14px; border-radius: 2px; font-size: 13px; font-weight: 500; }
.case-date { color: var(--c-text-light); font-size: 14px; }
.case-header h2 { font-size: 28px; line-height: 1.4; margin-bottom: 12px; }
.case-subtitle { font-size: 16px; color: var(--c-text-secondary); line-height: 1.6; }
.case-block { margin-bottom: 48px; }
.case-block h3 { font-size: 20px; margin-bottom: 24px; padding-left: 14px; border-left: 3px solid var(--c-accent); }
.case-overview-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.case-overview-item { background: var(--c-bg-warm); padding: 16px 20px; border-radius: 6px; }
.case-ov-label { display: block; font-size: 12px; color: var(--c-text-light); margin-bottom: 4px; }
.case-ov-value { font-size: 15px; font-weight: 600; color: var(--c-text-heading); }
.case-results-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.case-result-card { background: var(--c-bg-warm); border-radius: 8px; padding: 24px 20px; text-align: center; border: 1px solid var(--c-border); }
.case-result-icon { margin-bottom: 12px; }
.case-result-num { font-size: 28px; font-weight: 700; color: var(--c-accent); margin-bottom: 4px; }
.case-result-label { font-size: 13px; color: var(--c-text-secondary); }
.case-challenge-list { display: flex; flex-direction: column; gap: 20px; }
.case-challenge-item { display: flex; gap: 20px; padding: 24px; background: #fff; border: 1px solid var(--c-border); border-radius: 8px; }
.case-challenge-num { font-size: 28px; font-weight: 700; color: var(--c-accent); opacity: 0.4; flex-shrink: 0; line-height: 1; }
.case-challenge-content h4 { font-size: 16px; margin-bottom: 8px; }
.case-challenge-content p { font-size: 14px; color: var(--c-text-secondary); line-height: 1.7; }
.case-solution-list { display: flex; flex-direction: column; gap: 24px; }
.case-solution-item { background: #fff; border: 1px solid var(--c-border); border-radius: 8px; padding: 28px; }
.case-solution-phase { display: inline-block; background: var(--c-primary); color: #fff; padding: 3px 12px; border-radius: 2px; font-size: 12px; font-weight: 500; margin-bottom: 12px; }
.case-solution-item h4 { font-size: 17px; margin-bottom: 14px; }
.case-solution-item ul { list-style: none; padding: 0; }
.case-solution-item li { font-size: 14px; color: var(--c-text-secondary); line-height: 1.8; padding-left: 20px; position: relative; }
.case-solution-item li::before { content: ""; position: absolute; left: 0; top: 11px; width: 6px; height: 6px; border-radius: 50%; background: var(--c-accent); }
.case-timeline { position: relative; padding-left: 28px; }
.case-timeline::before { content: ""; position: absolute; left: 8px; top: 0; bottom: 0; width: 2px; background: var(--c-border); }
.case-timeline-item { position: relative; margin-bottom: 28px; }
.case-timeline-item:last-child { margin-bottom: 0; }
.case-tl-dot { position: absolute; left: -24px; top: 4px; width: 14px; height: 14px; border-radius: 50%; background: var(--c-accent); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--c-accent); }
.case-tl-date { font-size: 13px; font-weight: 600; color: var(--c-accent); display: block; margin-bottom: 4px; }
.case-tl-content p { font-size: 14px; color: var(--c-text-secondary); margin: 0; }
.case-testimonial { background: var(--c-bg-warm); border-radius: 8px; padding: 32px; position: relative; border: none; margin: 0; }
.case-quote-icon { position: absolute; top: 20px; left: 24px; opacity: 0.5; }
.case-testimonial > p { font-size: 15px; line-height: 1.8; color: var(--c-text-secondary); font-style: italic; margin: 24px 0 16px; }
.case-testimonial footer { display: flex; align-items: center; gap: 12px; }
.case-testimonial cite { font-size: 15px; font-weight: 600; color: var(--c-text-heading); font-style: normal; }
.case-testimonial footer span { font-size: 13px; color: var(--c-text-light); }
.case-sidebar { position: sticky; top: 100px; }
.case-sidebar-card { background: #fff; border: 1px solid var(--c-border); border-radius: 8px; padding: 28px; margin-bottom: 24px; }
.case-sidebar-card h4 { font-size: 16px; margin-bottom: 14px; }
.case-sidebar-card p { font-size: 14px; color: var(--c-text-secondary); line-height: 1.7; margin-bottom: 20px; }
.case-sidebar-card .btn-block { display: block; text-align: center; margin-bottom: 10px; }
.case-sidebar-card .btn-block:last-child { margin-bottom: 0; }
.case-related-list { display: flex; flex-direction: column; gap: 16px; }
.case-related-item { display: block; text-decoration: none; padding-bottom: 16px; border-bottom: 1px solid var(--c-border); }
.case-related-item:last-child { border-bottom: none; padding-bottom: 0; }
.case-related-industry { font-size: 11px; color: var(--c-accent); font-weight: 500; text-transform: uppercase; }
.case-related-item h5 { font-size: 14px; color: var(--c-text-heading); margin-top: 4px; line-height: 1.5; }
.case-related-item:hover h5 { color: var(--c-accent); }
.case-industry-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.case-tag { display: inline-block; padding: 6px 14px; font-size: 13px; color: var(--c-text-secondary); background: var(--c-bg-warm); border-radius: 2px; text-decoration: none; transition: all 0.3s; }
.case-tag:hover, .case-tag.active { background: var(--c-primary); color: #fff; }

/* Case Keywords - Professional Style */
.case-keywords {
  margin-top: 48px;
  padding: 32px;
  background: linear-gradient(135deg, rgba(15,43,70,0.02) 0%, rgba(201,169,110,0.05) 100%);
  border-radius: 12px;
  border: 1px solid var(--c-border);
}

.case-keywords h4 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text-heading);
  letter-spacing: 0.5px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--c-accent);
}

.case-keywords h4::before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 16px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23c9a96e' stroke-width='2'%3E%3Cpath d='M20.59 13.41l-7.17 7.17a2 2 0 0 1-2.83 0L2 12V2h10l8.59 8.59a2 2 0 0 1 0 2.82z'/%3E%3Cline x1='7' y1='7' x2='7.01' y2='7'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  flex-shrink: 0;
}

/* ============================================
   DOWNLOAD PAGE
   ============================================ */
/* ===== DOWNLOAD CENTER ===== */
.dl-hero { padding: 120px 0 48px; background: var(--c-primary); color: #fff; text-align: center; }
.dl-hero h1 { font-family: 'Noto Serif SC', serif; font-size: 40px; font-weight: 700; margin-bottom: 16px; color: #fff; }
.dl-hero-sub { font-size: 17px; color: rgba(255,255,255,0.85); line-height: 1.8; }
.dl-hero-sub span { display: inline-block; margin-top: 8px; font-size: 15px; color: var(--c-accent); font-weight: 500; letter-spacing: 1px; }
.dl-hero .breadcrumb { justify-content: center; margin-bottom: 24px; }
.dl-hero .breadcrumb a { color: rgba(255,255,255,0.6); }
.dl-hero .breadcrumb span { color: rgba(255,255,255,0.4); }

.dl-main { padding: 64px 0 80px; }

/* APP Card */
.dl-app-card { display: flex; align-items: center; gap: 48px; background: #fff; border: 1px solid var(--c-border); border-radius: 12px; padding: 40px 48px; margin-bottom: 72px; box-shadow: 0 2px 16px rgba(15,43,70,0.06); }
.dl-app-info { display: flex; gap: 24px; flex: 1; }
.dl-app-icon { flex-shrink: 0; }
.dl-app-meta h2 { font-family: 'Noto Serif SC', serif; font-size: 26px; color: var(--c-text-heading); margin-bottom: 10px; }
.dl-app-tags { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.dl-tag { display: inline-block; font-size: 12px; color: var(--c-text-secondary); background: var(--c-bg-warm); border: 1px solid var(--c-border); border-radius: 3px; padding: 3px 10px; }
.dl-app-desc { font-size: 15px; color: var(--c-text-secondary); line-height: 1.8; }

.dl-app-qr { flex-shrink: 0; text-align: center; }
.dl-qr-box { margin-bottom: 16px; }
.dl-qr-img { width: 140px; height: 140px; background: var(--c-bg-warm); border: 1px solid var(--c-border); border-radius: 10px; display: flex; align-items: center; justify-content: center; margin: 0 auto 10px; }
.dl-qr-label { font-size: 13px; color: var(--c-text-secondary); }
.dl-qr-btns { display: flex; gap: 10px; justify-content: center; }
.dl-btn { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 500; padding: 8px 16px; border-radius: 6px; transition: all 0.3s; text-decoration: none; }
.dl-btn-ios { background: var(--c-primary); color: #fff; }
.dl-btn-ios:hover { background: var(--c-primary-dark); }
.dl-btn-android { background: var(--c-accent); color: #fff; }
.dl-btn-android:hover { background: var(--c-accent-hover); }

/* Section */
.dl-section { margin-bottom: 72px; text-align: center; }
.dl-section-title { font-family: 'Noto Serif SC', serif; font-size: 28px; color: var(--c-text-heading); margin-bottom: 8px; }
.dl-section-desc { font-size: 15px; color: var(--c-text-secondary); margin-bottom: 40px; }

/* Features Grid */
.dl-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; text-align: left; }
.dl-feat-card { background: #fff; border: 1px solid var(--c-border); border-radius: 8px; padding: 28px; transition: all 0.3s; }
.dl-feat-card:hover { border-color: var(--c-accent); box-shadow: var(--c-shadow-hover); transform: translateY(-2px); }
.dl-feat-icon { width: 48px; height: 48px; background: linear-gradient(135deg, rgba(201,169,110,0.1), rgba(15,43,70,0.05)); border-radius: 10px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; color: var(--c-accent); }
.dl-feat-card h4 { font-size: 16px; font-weight: 600; color: var(--c-text-heading); margin-bottom: 8px; }
.dl-feat-card p { font-size: 14px; color: var(--c-text-secondary); line-height: 1.7; }

/* Social Grid */
.dl-social-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: left; }
.dl-social-card { background: #fff; border: 1px solid var(--c-border); border-radius: 8px; padding: 24px; display: flex; align-items: center; gap: 16px; transition: all 0.3s; }
.dl-social-card:hover { border-color: var(--c-accent); box-shadow: var(--c-shadow-hover); }
.dl-social-icon { flex-shrink: 0; }
.dl-social-text { flex: 1; min-width: 0; }
.dl-social-text h4 { font-size: 15px; font-weight: 600; color: var(--c-text-heading); margin-bottom: 4px; }
.dl-social-text p { font-size: 13px; color: var(--c-text-secondary); }
.dl-social-qr { flex-shrink: 0; width: 72px; height: 72px; background: var(--c-bg-warm); border-radius: 6px; display: flex; align-items: center; justify-content: center; }

/* Requirements */
.dl-requirements { background: var(--c-bg-warm); border-radius: 10px; padding: 40px; margin-bottom: 32px; }
.dl-requirements h3 { font-family: 'Noto Serif SC', serif; font-size: 20px; color: var(--c-text-heading); margin-bottom: 28px; text-align: center; }
.dl-req-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; max-width: 680px; margin: 0 auto; }
.dl-req-item { background: #fff; border-radius: 8px; padding: 24px; border: 1px solid var(--c-border); }
.dl-req-header { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.dl-req-header svg { color: var(--c-text-heading); }
.dl-req-header h4 { font-size: 17px; font-weight: 600; color: var(--c-text-heading); margin: 0; }
.dl-req-item ul { list-style: none; padding: 0; }
.dl-req-item li { font-size: 14px; color: var(--c-text-secondary); padding: 6px 0 6px 18px; position: relative; line-height: 1.6; }
.dl-req-item li::before { content: ""; position: absolute; left: 0; top: 13px; width: 6px; height: 6px; border-radius: 50%; background: var(--c-accent); }

/* Help */
.dl-help { text-align: center; padding: 20px; background: #fff; border: 1px dashed var(--c-border); border-radius: 8px; }
.dl-help p { font-size: 14px; color: var(--c-text-secondary); margin: 0; }
.dl-help a { color: var(--c-accent); font-weight: 600; text-decoration: none; }
.dl-help a:hover { text-decoration: underline; }

/* Download Responsive */
@media (max-width: 1024px) {
  .dl-app-card { flex-direction: column; padding: 32px; }
  .dl-social-grid { grid-template-columns: repeat(2, 1fr); }
  .dl-features { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .dl-hero h1 { font-size: 30px; }
  .dl-hero-sub { font-size: 15px; }
  .dl-app-card { padding: 24px; gap: 24px; }
  .dl-app-info { flex-direction: column; align-items: center; text-align: center; }
  .dl-app-tags { justify-content: center; }
  .dl-app-qr { width: 100%; }
  .dl-features { grid-template-columns: 1fr; }
  .dl-social-grid { grid-template-columns: 1fr; }
  .dl-social-card { justify-content: center; }
  .dl-req-grid { grid-template-columns: 1fr; }
  .dl-section-title { font-size: 24px; }
}

/* ===== OLD DOWNLOAD (deprecated) ===== */
.download-section { padding: 80px 0; }
.download-hero-card { display: flex; justify-content: space-between; align-items: center; gap: 48px; background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%); border-radius: 12px; padding: 48px; margin-bottom: 80px; color: #fff; }
.download-hero-left { display: flex; gap: 28px; flex: 1; }
.download-app-icon { flex-shrink: 0; }
.download-hero-info h2 { font-size: 28px; color: #fff; margin-bottom: 8px; }
.download-version { font-size: 13px; color: rgba(255,255,255,0.6); margin-bottom: 12px; }
.download-desc { font-size: 15px; color: rgba(255,255,255,0.8); line-height: 1.7; margin-bottom: 20px; }
.download-features { display: flex; flex-wrap: wrap; gap: 12px 20px; }
.download-feat-item { display: flex; align-items: center; gap: 6px; font-size: 13px; color: rgba(255,255,255,0.9); }
.download-hero-right { flex-shrink: 0; }
.download-qr-group { display: flex; gap: 20px; }
.download-qr-card { background: rgba(255,255,255,0.1); border-radius: 8px; padding: 24px; text-align: center; backdrop-filter: blur(10px); }
.download-qr-placeholder { width: 120px; height: 120px; background: #fff; border-radius: 8px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; margin: 0 auto 14px; }
.download-qr-placeholder span { font-size: 11px; color: var(--c-text-light); }
.download-qr-card h4 { font-size: 15px; color: #fff; margin-bottom: 4px; }
.download-qr-card p { font-size: 12px; color: rgba(255,255,255,0.6); margin-bottom: 12px; }
.download-qr-card .btn-sm { font-size: 12px; padding: 6px 16px; }
.download-social-section { margin-bottom: 80px; }
.download-social-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.download-social-card { background: #fff; border: 1px solid var(--c-border); border-radius: 8px; padding: 32px 24px; text-align: center; transition: all 0.3s; }
.download-social-card:hover { border-color: var(--c-accent); box-shadow: var(--c-shadow-hover); }
.download-social-icon { margin-bottom: 16px; }
.download-social-card h4 { font-size: 16px; margin-bottom: 6px; }
.download-social-card > p { font-size: 13px; color: var(--c-text-light); margin-bottom: 16px; }
.download-qr-sm { width: 100px; height: 100px; background: var(--c-bg-warm); border-radius: 6px; display: flex; align-items: center; justify-content: center; margin: 0 auto; }
.download-features-section { margin-bottom: 80px; }
.download-features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.download-feature-card { background: #fff; border: 1px solid var(--c-border); border-radius: 8px; padding: 32px; transition: all 0.3s; }
.download-feature-card:hover { border-color: var(--c-accent); box-shadow: var(--c-shadow-hover); }
.download-feat-icon { margin-bottom: 16px; }
.download-feature-card h4 { font-size: 16px; margin-bottom: 8px; }
.download-feature-card p { font-size: 14px; color: var(--c-text-secondary); line-height: 1.7; }
.download-requirements { background: var(--c-bg-warm); border-radius: 8px; padding: 40px; }
.download-requirements h3 { font-size: 20px; margin-bottom: 24px; text-align: center; }
.download-req-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; max-width: 700px; margin: 0 auto; }
.download-req-item h4 { font-size: 16px; margin-bottom: 12px; color: var(--c-accent); }
.download-req-item ul { list-style: none; padding: 0; }
.download-req-item li { font-size: 14px; color: var(--c-text-secondary); padding: 6px 0; padding-left: 16px; position: relative; }
.download-req-item li::before { content: ""; position: absolute; left: 0; top: 13px; width: 5px; height: 5px; border-radius: 50%; background: var(--c-accent); }

/* ============================================
   CAREERS PAGE
   ============================================ */
.careers-why-section { padding: 80px 0; background: var(--c-bg-warm); }
.careers-why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 48px; }
.careers-why-card { background: #fff; border-radius: 8px; padding: 32px; text-align: center; border: 1px solid var(--c-border); transition: all 0.3s; }
.careers-why-card:hover { box-shadow: var(--c-shadow-hover); }
.careers-why-icon { margin-bottom: 16px; }
.careers-why-card h4 { font-size: 16px; margin-bottom: 10px; }
.careers-why-card p { font-size: 14px; color: var(--c-text-secondary); line-height: 1.7; }
.careers-culture-section { padding: 80px 0; }
.careers-culture-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.careers-culture-left h2 { font-size: 28px; margin-bottom: 16px; }
.careers-culture-left > p { font-size: 15px; color: var(--c-text-secondary); line-height: 1.8; margin-bottom: 12px; }
.careers-culture-stats { display: flex; gap: 32px; margin-top: 28px; }
.careers-stat { text-align: center; }
.careers-stat-num { display: block; font-size: 28px; font-weight: 700; color: var(--c-accent); }
.careers-stat-label { font-size: 13px; color: var(--c-text-light); }
.careers-benefit-list { display: flex; flex-direction: column; gap: 18px; }
.careers-benefit-item { display: flex; gap: 14px; align-items: flex-start; }
.careers-benefit-item svg { flex-shrink: 0; margin-top: 2px; }
.careers-benefit-item h5 { font-size: 15px; margin-bottom: 4px; }
.careers-benefit-item p { font-size: 13px; color: var(--c-text-secondary); margin: 0; }
.careers-jobs-section { padding: 80px 0; background: var(--c-bg-warm); }
.careers-filter-bar { display: flex; gap: 12px; justify-content: center; margin-bottom: 40px; flex-wrap: wrap; }
.careers-filter-btn { background: #fff; border: 1px solid var(--c-border); padding: 10px 24px; border-radius: 24px; font-size: 14px; cursor: pointer; transition: all 0.3s; font-family: var(--f-body); color: var(--c-text); }
.careers-filter-btn:hover { border-color: var(--c-accent); color: var(--c-accent); }
.careers-filter-btn.active { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }
.careers-job-list { display: flex; flex-direction: column; gap: 20px; max-width: 900px; margin: 0 auto; }

/* Department Group Header */
.careers-dept-header { display: flex; align-items: center; gap: 12px; margin-top: 12px; margin-bottom: -4px; padding: 0 4px; }
.careers-dept-header:first-child { margin-top: 0; }
.careers-dept-icon { width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--c-primary), #1a3a5c); flex-shrink: 0; }
.careers-dept-title { font-family: var(--f-serif); font-size: 18px; color: var(--c-heading); font-weight: 600; }
.careers-dept-count { font-size: 13px; color: var(--c-text-light); margin-left: 4px; }

/* Job Card */
.careers-job-card { background: #fff; border: 1px solid var(--c-border); border-left: 4px solid var(--c-accent); border-radius: 0 8px 8px 0; padding: 28px 32px; transition: all 0.3s; position: relative; }
.careers-job-card:hover { box-shadow: var(--c-shadow-hover); transform: translateY(-2px); border-left-color: var(--c-primary); }
.careers-job-card[data-category="sales"] { border-left-color: #e8913a; }
.careers-job-card[data-category="sales"]:hover { border-left-color: #d4802e; }
.careers-job-card[data-category="teaching"] { border-left-color: var(--c-accent); }
.careers-job-card[data-category="teaching"]:hover { border-left-color: #b8944e; }
.careers-job-card[data-category="operation"] { border-left-color: #3a8a6e; }
.careers-job-card[data-category="operation"]:hover { border-left-color: #2d7a5e; }
.careers-job-card[data-category="tech"] { border-left-color: #4a7ab5; }
.careers-job-card[data-category="tech"]:hover { border-left-color: #3a6a9f; }

.careers-job-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.careers-job-header { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.careers-job-header h3 { font-family: var(--f-serif); font-size: 20px; color: var(--c-heading); font-weight: 600; margin: 0; }
.careers-job-tags { display: flex; gap: 8px; }
.careers-job-tag { padding: 3px 10px; border-radius: 3px; font-size: 12px; font-weight: 500; }
.careers-job-tag.hot { background: #fef3e2; color: #e8913a; border: 1px solid #fde5c3; }
.careers-job-tag.new { background: #e8f5e9; color: #388e3c; border: 1px solid #c8e6c9; }
.careers-job-tag.urgent { background: #fce4ec; color: #c62828; border: 1px solid #f8bbd0; }

.careers-job-dept-badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px; border-radius: 4px; font-size: 12px; color: var(--c-text-light); background: var(--c-bg); border: 1px solid var(--c-border); margin-bottom: 12px; }
.careers-job-dept-badge svg { width: 14px; height: 14px; }

.careers-job-meta { display: flex; gap: 20px; margin-bottom: 14px; flex-wrap: wrap; }
.careers-job-salary { font-size: 20px; font-weight: 700; color: var(--c-accent); font-family: var(--f-sans); }
.careers-job-meta span:not(.careers-job-salary) { display: flex; align-items: center; gap: 5px; font-size: 13px; color: var(--c-text-light); }
.careers-job-meta svg { width: 15px; height: 15px; flex-shrink: 0; }

.careers-job-desc { font-size: 14px; color: var(--c-text-secondary); line-height: 1.7; margin-bottom: 16px; }
.careers-job-reqs { margin-bottom: 20px; }
.careers-job-reqs h5 { font-size: 14px; margin-bottom: 8px; color: var(--c-text-heading); font-weight: 600; }
.careers-job-reqs ul { list-style: none; padding: 0; margin: 0; }
.careers-job-reqs li { font-size: 13px; color: var(--c-text); line-height: 1.8; padding-left: 18px; position: relative; }
.careers-job-reqs li::before { content: ''; position: absolute; left: 0; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--c-accent); }
.careers-job-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.careers-job-deadline { font-size: 12px; color: var(--c-text-light); }
.careers-job-card .btn-primary { padding: 10px 28px; font-size: 14px; border-radius: 4px; }
.careers-job-reqs ul { list-style: none; padding: 0; }
.careers-job-reqs li { font-size: 13px; color: var(--c-text-secondary); padding: 4px 0 4px 16px; position: relative; }
.careers-job-reqs li::before { content: ""; position: absolute; left: 0; top: 11px; width: 5px; height: 5px; border-radius: 50%; background: var(--c-accent); }
.careers-process-section { padding: 80px 0; }
.careers-process-steps { display: flex; align-items: flex-start; justify-content: center; gap: 0; margin-top: 48px; }
.careers-process-step { text-align: center; flex: 1; max-width: 160px; }
.careers-step-num { font-size: 32px; font-weight: 700; color: var(--c-accent); opacity: 0.3; margin-bottom: 12px; }
.careers-process-step h4 { font-size: 15px; margin-bottom: 8px; }
.careers-process-step p { font-size: 13px; color: var(--c-text-light); line-height: 1.6; }
.careers-process-connector { width: 40px; height: 2px; background: var(--c-border); margin-top: 16px; flex-shrink: 0; }
.careers-contact-section { padding: 80px 0; background: var(--c-bg-warm); }
.careers-contact-card { display: flex; justify-content: space-between; align-items: center; gap: 48px; background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%); border-radius: 12px; padding: 48px; color: #fff; }
.careers-contact-left h2 { font-size: 28px; color: #fff; margin-bottom: 12px; }
.careers-contact-left > p { font-size: 15px; color: rgba(255,255,255,0.8); line-height: 1.7; margin-bottom: 24px; }
.careers-contact-info { display: flex; flex-direction: column; gap: 14px; }
.careers-contact-item { display: flex; align-items: center; gap: 12px; font-size: 14px; color: rgba(255,255,255,0.9); }
.careers-contact-right { text-align: center; flex-shrink: 0; }
.careers-contact-right h4 { font-size: 18px; color: #fff; margin-bottom: 8px; }
.careers-contact-right > p { font-size: 13px; color: rgba(255,255,255,0.6); margin-bottom: 20px; }
.careers-contact-right .btn { display: block; margin-bottom: 10px; min-width: 160px; }
.careers-contact-right .btn-outline { color: #fff; border-color: rgba(255,255,255,0.4); }
.careers-contact-right .btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; }

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-intro-section { padding: 80px 0; }
.about-intro-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; align-items: start; }
.about-intro-left h2 { font-size: 32px; margin-bottom: 8px; }
.about-intro-subtitle { font-size: 16px; color: var(--c-accent); margin-bottom: 24px; font-weight: 500; }
.about-intro-left p { font-size: 15px; color: var(--c-text-secondary); line-height: 1.9; margin-bottom: 16px; }
.about-intro-left strong { color: var(--c-accent); }
.about-mission-card { background: var(--c-bg-warm); border-radius: 8px; padding: 24px; margin-bottom: 16px; border-left: 3px solid var(--c-accent); }
.about-mission-card h4 { font-size: 15px; margin-bottom: 8px; color: var(--c-accent); }
.about-mission-card p { font-size: 14px; color: var(--c-text-secondary); line-height: 1.7; margin: 0; }
.about-values-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.about-value-tag { display: inline-block; padding: 5px 14px; background: #fff; border: 1px solid var(--c-border); border-radius: 2px; font-size: 13px; color: var(--c-text-heading); }
.about-numbers-section { padding: 64px 0; background: var(--c-primary); }
.about-numbers-grid { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 32px; }
.about-number-item { text-align: center; }
.about-number { font-size: 42px; font-weight: 700; color: var(--c-accent); }
.about-number-unit { font-size: 18px; color: var(--c-accent); font-weight: 500; }
.about-number-item p { font-size: 14px; color: rgba(255,255,255,0.7); margin-top: 4px; }

/* Timeline - Zigzag Layout */
.about-timeline-section { padding: 96px 0; background: linear-gradient(180deg, #fff 0%, var(--c-bg-warm) 100%); }
.timeline { position: relative; margin-top: 56px; max-width: 900px; margin-left: auto; margin-right: auto; }
.timeline::before {
  content: ''; position: absolute; left: 50%; top: 0; bottom: 0;
  width: 3px; background: linear-gradient(to bottom, var(--c-accent) 0%, var(--c-primary) 50%, var(--c-accent) 100%);
  transform: translateX(-50%); border-radius: 2px;
}
.timeline-item {
  position: relative; width: 50%; padding: 0 48px 48px 0;
  box-sizing: border-box;
}
.timeline-item:nth-child(odd) { margin-left: 0; text-align: right; }
.timeline-item:nth-child(even) { margin-left: 50%; text-align: left; padding: 0 0 48px 48px; }
/* Node dot */
.timeline-item::before {
  content: ''; position: absolute; top: 8px; z-index: 2;
  width: 16px; height: 16px; border-radius: 50%;
  background: #fff; border: 3px solid var(--c-accent);
  box-shadow: 0 0 0 4px rgba(201, 169, 110, 0.15);
  transition: all 0.3s;
}
.timeline-item:nth-child(odd)::before { right: -8px; }
.timeline-item:nth-child(even)::before { left: -8px; }
.timeline-item:hover::before {
  background: var(--c-accent); box-shadow: 0 0 0 6px rgba(201, 169, 110, 0.25);
}
/* Highlight node */
.timeline-item.highlight::before {
  width: 22px; height: 22px; background: var(--c-primary);
  border-color: var(--c-accent); box-shadow: 0 0 0 5px rgba(15, 43, 70, 0.2);
}
.timeline-item.highlight:hover::before {
  box-shadow: 0 0 0 8px rgba(15, 43, 70, 0.3);
}
.timeline-item:nth-child(odd).highlight::before { right: -11px; top: 5px; }
.timeline-item:nth-child(even).highlight::before { left: -11px; top: 5px; }
/* Year badge */
.timeline-year {
  display: inline-block; font-family: 'Noto Serif SC', serif;
  font-size: 18px; font-weight: 700; color: var(--c-accent);
  background: linear-gradient(135deg, rgba(201, 169, 110, 0.1), rgba(201, 169, 110, 0.05));
  padding: 4px 16px; border-radius: 20px; margin-bottom: 10px;
  border: 1px solid rgba(201, 169, 110, 0.2);
  letter-spacing: 1px;
}
.timeline-item.highlight .timeline-year {
  color: #fff; background: var(--c-primary);
  border-color: var(--c-primary); font-size: 20px;
  box-shadow: 0 2px 8px rgba(15, 43, 70, 0.2);
}
/* Content card */
.timeline-content {
  background: #fff; border-radius: 10px; padding: 20px 24px;
  border: 1px solid var(--c-border);
  box-shadow: 0 2px 12px rgba(15, 43, 70, 0.04);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}
.timeline-content:hover {
  box-shadow: 0 8px 28px rgba(15, 43, 70, 0.1);
  transform: translateY(-2px); border-color: var(--c-accent);
}
.timeline-content p {
  font-size: 14px; color: var(--c-text-secondary);
  line-height: 1.8; margin: 0;
}
.timeline-item.highlight .timeline-content {
  background: linear-gradient(135deg, rgba(15, 43, 70, 0.03), rgba(201, 169, 110, 0.03));
  border-color: rgba(201, 169, 110, 0.3);
}
/* Connector arrow for odd (right-aligned) items */
.timeline-item:nth-child(odd) .timeline-content::after {
  content: ''; position: absolute; right: -8px; top: 12px;
  width: 0; height: 0; border-style: solid;
  border-width: 6px 0 6px 8px;
  border-color: transparent transparent transparent #fff;
  filter: drop-shadow(1px 0 0 var(--c-border));
}
/* Connector arrow for even (left-aligned) items */
.timeline-item:nth-child(even) .timeline-content::after {
  content: ''; position: absolute; left: -8px; top: 12px;
  width: 0; height: 0; border-style: solid;
  border-width: 6px 8px 6px 0;
  border-color: transparent #fff transparent transparent;
  filter: drop-shadow(-1px 0 0 var(--c-border));
}

.about-team-section { padding: 80px 0; background: var(--c-bg-warm); }
.about-team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 48px; }
.about-team-card { background: #fff; border-radius: 8px; padding: 36px; text-align: center; border: 1px solid var(--c-border); transition: all 0.3s; }
.about-team-card:hover { box-shadow: var(--c-shadow-hover); }
.about-team-avatar { width: 80px; height: 80px; border-radius: 50%; background: var(--c-bg-warm); display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.about-team-photo { width: 120px; height: 120px; border-radius: 50%; overflow: hidden; margin: 0 auto 20px; border: 3px solid var(--c-border); box-shadow: 0 4px 12px rgba(15, 43, 70, 0.1); }
.about-team-photo img { width: 100%; height: 100%; object-fit: cover; }
.about-team-card h4 { font-size: 18px; margin-bottom: 6px; }
.about-team-title { font-size: 13px; color: var(--c-accent); margin-bottom: 14px; font-weight: 500; }
.about-team-desc { font-size: 14px; color: var(--c-text-secondary); line-height: 1.7; }
.about-org-section { padding: 80px 0; }
.about-org-chart { max-width: 900px; margin: 40px auto 0; display: flex; flex-direction: column; align-items: center; }
.about-org-level { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }
.about-org-level.wide { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; width: 100%; }
.about-org-box { background: #fff; border: 1px solid var(--c-border); border-radius: 6px; padding: 18px 24px; text-align: center; transition: all 0.3s; }
.about-org-box:hover { border-color: var(--c-accent); }
.about-org-box.top { background: var(--c-primary); color: #fff; border-color: var(--c-primary); padding: 20px 40px; }
.about-org-box.top h4 { color: #fff; }
.about-org-box h4 { font-size: 14px; margin-bottom: 4px; }
.about-org-box p { font-size: 12px; color: var(--c-text-light); margin: 0; }
.about-org-connector { width: 2px; height: 24px; background: var(--c-border); }
.about-certs-section { padding: 80px 0; background: var(--c-bg-warm); }
.about-certs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.about-cert-card { background: #fff; border: 1px solid var(--c-border); border-radius: 8px; padding: 28px; text-align: center; transition: all 0.3s; }
.about-cert-card:hover { border-color: var(--c-accent); box-shadow: var(--c-shadow-hover); }
.about-cert-icon { margin-bottom: 14px; }
.about-cert-card h4 { font-size: 15px; margin-bottom: 6px; }
.about-cert-card p { font-size: 13px; color: var(--c-text-light); }
.about-patents-section { padding: 80px 0; }
.about-patents-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 40px; max-width: 900px; margin-left: auto; margin-right: auto; }
.about-patent-card { display: flex; gap: 16px; align-items: flex-start; background: #fff; border: 1px solid var(--c-border); border-radius: 8px; padding: 20px 24px; transition: all 0.3s; }
.about-patent-card:hover { border-color: var(--c-accent); }
.about-patent-num { font-size: 24px; font-weight: 700; color: var(--c-accent); opacity: 0.4; flex-shrink: 0; line-height: 1; }
.about-patent-info h4 { font-size: 14px; margin-bottom: 4px; line-height: 1.4; }
.about-patent-info p { font-size: 12px; color: var(--c-text-light); margin: 0; }
.about-honors-section { padding: 80px 0; background: var(--c-bg-warm); }
.about-honors-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.about-honor-card { background: #fff; border: 1px solid var(--c-border); border-radius: 8px; padding: 28px; transition: all 0.3s; position: relative; overflow: hidden; }
.about-honor-card:hover { border-color: var(--c-accent); box-shadow: var(--c-shadow-hover); }
.about-honor-year { font-size: 13px; font-weight: 600; color: var(--c-accent); margin-bottom: 10px; }
.about-honor-card h4 { font-size: 15px; margin-bottom: 8px; line-height: 1.4; }
.about-honor-card p { font-size: 13px; color: var(--c-text-secondary); line-height: 1.6; }
.about-contact-section { padding: 80px 0; }
.about-contact-card { background: #fff; border: 1px solid var(--c-border); border-radius: 12px; padding: 48px; }
.about-contact-card h2 { font-size: 24px; text-align: center; margin-bottom: 40px; }
.about-contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.about-contact-item { display: flex; gap: 14px; align-items: flex-start; }
.about-contact-item svg { flex-shrink: 0; margin-top: 2px; }
.about-contact-item h4 { font-size: 14px; margin-bottom: 6px; }
.about-contact-item p { font-size: 13px; color: var(--c-text-secondary); margin: 0; line-height: 1.6; }

/* ===== PAGE HERO (Sub-page Header) ===== */
.page-hero {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-light) 100%);
  padding: 120px 0 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(201,169,110,0.1) 0%, transparent 50%);
}
.page-hero .breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 16px;
}
.page-hero .breadcrumb a {
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.page-hero .breadcrumb a:hover { color: var(--c-accent); }
.page-hero .breadcrumb span { color: rgba(255,255,255,0.8); }
.page-hero h1 {
  font-size: 36px;
  color: #fff;
  margin-bottom: 12px;
  position: relative;
}
.page-hero p {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== NEWS TABS ===== */
.news-tabs-section { background: var(--c-white); }
.news-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--c-border);
  margin-bottom: 40px;
}
.news-tab {
  display: inline-block;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
  text-decoration: none;
}
.news-tab:hover {
  color: var(--c-text-heading);
}
.news-tab.active {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
  font-weight: 600;
}

/* ===== NEWS LIST GRID (list page uses 2-col) ===== */
.news-list-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

/* ===== 新闻列表页 - 有封面图的大图左右布局 ===== */
.news-card-list {
  display: flex;
  gap: 20px;
  padding: 20px;
  background: var(--c-bg-main);
  border-radius: var(--radius-card);
  border: 1px solid var(--c-border);
  transition: var(--transition);
  align-items: flex-start;
}

.news-card-list .news-cover-list {
  flex-shrink: 0;
  width: 200px;
  height: 150px;
  border-radius: 8px;
  background-size: cover;
  background-position: center;
  background-color: var(--c-primary);
  position: relative;
  overflow: hidden;
}

.news-card-list .news-cover-list::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(0,0,0,0.05));
}

.news-card-list .news-content-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 150px;
}

.news-card-list h3 {
  font-size: 17px;
  margin-bottom: 10px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--c-text-heading);
}

.news-card-list p {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.news-card-list .news-meta-list {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--c-border);
}

.news-card-list .news-date-text-list {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--c-text-muted);
  font-weight: 500;
}

.news-card-list .news-date-text-list svg {
  opacity: 0.7;
}

.news-card-list:hover {
  border-color: var(--c-accent);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

/* ===== 新闻列表页 - 无封面图的日期卡片（保留原样式）===== */
.news-card-list-date {
  display: flex;
  gap: 24px;
  padding: 28px;
  background: var(--c-bg-main);
  border-radius: var(--radius-card);
  border: 1px solid var(--c-border);
  transition: var(--transition);
}

.news-card-list-date .news-date {
  flex-shrink: 0;
  width: 64px;
  text-align: center;
}

.news-card-list-date .news-date .day {
  font-size: 32px;
  font-weight: 800;
  color: var(--c-primary);
  line-height: 1;
  font-family: "Noto Serif SC", serif;
}

.news-card-list-date .news-date .month {
  font-size: 13px;
  color: var(--c-text-muted);
  margin-top: 4px;
}

.news-card-list-date .news-content h3 {
  font-size: 17px;
  margin-bottom: 10px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-list-date .news-content p {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-list-date:hover {
  border-color: var(--c-accent);
  box-shadow: var(--shadow-card);
}

/* ===== CASES FILTER ===== */
.cases-list-section { background: var(--c-white); }
.cases-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}
.filter-tag {
  display: inline-block;
  padding: 8px 20px;
  font-size: 14px;
  color: var(--c-text-body);
  background: var(--c-bg-main);
  border: 1px solid var(--c-border);
  border-radius: 24px;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.filter-tag:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}
.filter-tag.active {
  background: var(--c-accent);
  color: #fff;
  border-color: var(--c-accent);
}

/* Cases list page: 4-col grid */
.cases-list-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* ===== PAGINATION ===== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: 48px;
}
.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 10px;
  font-size: 14px;
  border-radius: 4px;
  border: 1px solid var(--c-border);
  color: var(--c-text-body);
  text-decoration: none;
  transition: var(--transition);
}
.pagination a:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}
.pagination .active {
  background: var(--c-accent);
  color: #fff;
  border-color: var(--c-accent);
  font-weight: 600;
}
.pagination .disabled {
  color: var(--c-text-muted);
  opacity: 0.5;
  pointer-events: none;
}
.pagination .page-info {
  font-size: 13px;
  color: var(--c-text-muted);
  margin-left: 12px;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--c-text-muted);
  font-size: 15px;
}

/* Responsive for new pages */
@media (max-width: 1024px) {
  .cases-list-grid { grid-template-columns: repeat(3, 1fr); }
  .case-detail-layout { grid-template-columns: 1fr; }
  .case-sidebar { position: static; }
  .case-results-grid { grid-template-columns: repeat(2, 1fr); }
  .download-hero-card { flex-direction: column; }
  .download-social-grid { grid-template-columns: repeat(2, 1fr); }
  .download-features-grid { grid-template-columns: repeat(2, 1fr); }
  .careers-why-grid { grid-template-columns: repeat(2, 1fr); }
  .careers-culture-grid { grid-template-columns: 1fr; gap: 40px; }
  .careers-contact-card { flex-direction: column; text-align: center; }
  .careers-contact-info { align-items: center; }
  .about-intro-grid { grid-template-columns: 1fr; }
  .about-team-grid { grid-template-columns: repeat(2, 1fr); }
  .about-certs-grid { grid-template-columns: repeat(2, 1fr); }
  .about-honors-grid { grid-template-columns: repeat(2, 1fr); }
  .about-contact-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .about-org-level.wide { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .news-list-grid { grid-template-columns: 1fr; }

  /* 新闻列表大图卡片移动端优化 */
  .news-card-list {
    flex-direction: column;
    padding: 16px;
  }
  .news-card-list .news-cover-list {
    width: 100%;
    height: auto;
    aspect-ratio: 4/3;
  }
  .news-card-list h3 {
    font-size: 16px;
  }
  .news-card-list p {
    font-size: 13px;
  }
  .cases-list-grid { grid-template-columns: repeat(2, 1fr); }
  .news-tabs { overflow-x: auto; }
  .page-hero { padding: 100px 0 48px; }
  .page-hero h1 { font-size: 28px; }
  .case-overview-grid { grid-template-columns: repeat(2, 1fr); }
  .case-results-grid { grid-template-columns: 1fr 1fr; }
  .download-hero-card { padding: 28px; }
  .download-hero-left { flex-direction: column; align-items: center; text-align: center; }
  .download-qr-group { flex-direction: column; }
  .download-social-grid { grid-template-columns: 1fr 1fr; }
  .download-features-grid { grid-template-columns: 1fr; }
  .download-req-grid { grid-template-columns: 1fr; }
  .careers-why-grid { grid-template-columns: 1fr; }
  .careers-process-steps { flex-direction: column; align-items: center; }
  .careers-process-connector { width: 2px; height: 20px; }
  .careers-filter-bar { flex-wrap: wrap; }
  .about-team-grid { grid-template-columns: 1fr; }
  .about-certs-grid { grid-template-columns: 1fr; }
  .about-patents-grid { grid-template-columns: 1fr; }
  .about-honors-grid { grid-template-columns: 1fr; }
  .about-contact-grid { grid-template-columns: 1fr; }
  .about-numbers-grid { gap: 20px; }
  .about-number { font-size: 32px; }
  .about-org-level.wide { grid-template-columns: 1fr 1fr; }
  .timeline { padding-left: 0; max-width: 100%; }
  .timeline::before { left: 16px; transform: none; }
  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    width: 100%; margin-left: 0; padding: 0 0 36px 48px;
    text-align: left;
  }
  .timeline-item::before,
  .timeline-item:nth-child(odd)::before,
  .timeline-item:nth-child(even)::before {
    left: 8px; right: auto; top: 6px;
  }
  .timeline-item.highlight::before,
  .timeline-item:nth-child(odd).highlight::before,
  .timeline-item:nth-child(even).highlight::before {
    left: 5px; right: auto; top: 3px;
  }
  .timeline-item:nth-child(odd) .timeline-content::after,
  .timeline-item:nth-child(even) .timeline-content::after {
    left: -8px; right: auto;
    border-width: 6px 8px 6px 0;
    border-color: transparent #fff transparent transparent;
    filter: drop-shadow(-1px 0 0 var(--c-border));
  }
  .timeline-year { font-size: 16px; }
}

/* ===== LECTURER PREVIEW GRID ===== */
.lecturer-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.lecturer-preview-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  padding: 28px 24px;
  text-align: center;
  transition: all 0.3s ease;
}
.lecturer-preview-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.lecturer-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--c-bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--c-primary);
}
.lecturer-preview-card h4 {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--c-text-heading);
  margin-bottom: 6px;
}
.lecturer-role {
  font-size: 13px;
  color: var(--c-accent);
  font-weight: 600;
  margin-bottom: 12px;
}
.lecturer-bio {
  font-size: 13px;
  color: var(--c-text-body);
  line-height: 1.6;
}
@media (max-width: 1024px) {
  .lecturer-preview-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .lecturer-preview-grid { grid-template-columns: 1fr; }
}

/* ========================================
   COURSES PAGE - Comparison Table
   ======================================== */
.course-table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  background: #fff;
}
.course-compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 700px;
}
.course-compare-table thead th {
  background: var(--c-primary);
  color: #fff;
  font-weight: 600;
  padding: 14px 16px;
  text-align: left;
  font-size: 13px;
  white-space: nowrap;
}
.course-compare-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text-body);
  line-height: 1.5;
  vertical-align: top;
}
.course-compare-table tbody tr:hover {
  background: rgba(201, 169, 110, 0.04);
}
.course-compare-table .series-cell {
  font-weight: 600;
  color: var(--c-primary);
  background: rgba(15, 43, 70, 0.03);
  white-space: nowrap;
  vertical-align: middle;
  border-right: 2px solid var(--c-accent);
}
.course-compare-table .course-name-cell {
  font-weight: 600;
  color: var(--c-text-title);
  white-space: nowrap;
}
.course-compare-table .price-cell {
  font-weight: 700;
  color: var(--c-accent);
  white-space: nowrap;
}

/* ===== ABOUT PAGE - TIMELINE IMAGE ===== */
.timeline-image {
  margin-top: 12px;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.timeline-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s;
}
.timeline-content:hover .timeline-image img {
  transform: scale(1.05);
}

/* ===== ABOUT PAGE - PATENT IMAGE ===== */
.patent-image-preview {
  margin-top: 10px;
  max-width: 200px;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--c-border);
}
.patent-image-preview img {
  width: 100%;
  height: auto;
  display: block;
}
.patent-number {
  margin-top: 8px;
  font-size: 12px;
  color: var(--c-text-muted);
}
.patent-number span:first-child {
  font-weight: 600;
}

/* ===== ABOUT PAGE - CERTIFICATES & HONORS ===== */
.about-certificates-section {
  padding: 80px 0;
  background: var(--c-bg-alt);
}
.certificates-grid,
.honors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}
.certificate-card,
.honor-card {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--c-border);
  transition: all 0.3s;
}
.certificate-card:hover,
.honor-card:hover {
  border-color: var(--c-accent);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.certificate-image,
.honor-image {
  width: 100%;
  height: 200px;
  background: var(--c-bg-warm);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.certificate-image img,
.honor-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.certificate-card:hover .certificate-image img,
.honor-card:hover .honor-image img {
  transform: scale(1.05);
}
.certificate-placeholder,
.honor-placeholder {
  color: var(--c-text-muted);
  opacity: 0.3;
}
.certificate-info,
.honor-info {
  padding: 20px;
}
.certificate-info h4,
.honor-info h4 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--c-text-heading);
  line-height: 1.4;
}
.certificate-info p,
.honor-info p {
  font-size: 13px;
  color: var(--c-text-muted);
  margin-bottom: 6px;
  line-height: 1.6;
}
.certificate-info span {
  display: inline-block;
  font-size: 12px;
  color: var(--c-accent);
  font-weight: 600;
  margin-top: 4px;
}