:root {
  --primary: #0f4c81;
  --primary-dark: #0a2540;
  --accent-yellow: #ffb300;
  --accent-gold: #c9a227;
  --accent-red: #E53935;
  --bg: #f9fafb;
  --bg-gray: #f3f6f9;
  --bg-white: #ffffff;
  --text: #6b7280;
  --text-secondary: #5a6474;
  --text-muted: #333333;
  --border: #e5e7eb;
  --white: #ffffff;
  --shadow: 0 1px 3px rgba(10,37,64,0.06);
  --shadow-card: 0 2px 12px rgba(10,37,64,0.07);
  --shadow-hover: 0 8px 24px rgba(10,37,64,0.12);
  --radius: 8px;
  --radius-sm: 4px;
  --transition: all 0.25s ease;
  --color-youth: #1e88e5;
  --color-innovation: #8E24AA;
  --color-entrepreneur: #FB8C00;
  --color-engineer: #455A64;
  --color-postdoc: #43A047;
  --color-torch: #E53935;
  --color-excellent: #FFB300;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg-white);
  font-size: 1.0rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

.container {
  width: 100%;
  max-width: 1230px;
  margin: 0 auto;
  padding: 0 15px;
}

section { padding: 50px 0; }

.section-header { margin-bottom: 36px; }
.section-header.left-align { text-align: left; }
.section-label {
  display: block;
  font-weight: 700;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.section-header h2 {
  font-size: 2.875rem;
  line-height: 1.2;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: -0.02em;
}
.section-desc{
  max-height: 700px;
}
/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  padding: 0;
  height: 68px;
  display: flex;
  align-items: center;
  transition: var(--transition);
}
.navbar.scrolled {
  background: var(--white);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.logo-img { height: 36px; border-radius: 3px; width: auto;}
.navbar.scrolled .logo-img { filter: none; }
/* 双Logo切换：默认显示主logo，滚动后显示副logo(flogo) */
.logo-default { display: inline-block; }
.logo-scroll { display: none; }
.navbar.scrolled .logo-default { display: none; }
.navbar.scrolled .logo-scroll { display: inline-block; }
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-size: 1.125rem;
  font-weight: 700;
  transition: var(--transition);
}
.navbar.scrolled .logo { color: var(--text); }
.logo-icon { font-size: 1.375rem; }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-menu a {
  color: rgba(255,255,255,0.85);
  font-size: 0.875rem;
  transition: var(--transition);
}
.nav-menu a:hover { color: var(--white); }
.navbar.scrolled .nav-menu a { color: var(--text); }
.navbar.scrolled .nav-menu a:hover { color: var(--primary); }
.lang-switch {
  background: transparent;
  border: none;
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  margin-left: 24px;
  padding: 4px 0;
}
.navbar.scrolled .lang-switch { color: var(--text); }
.lang-switch .lang-en.active,
.lang-switch .lang-zh.active {
  color: var(--accent-gold);
  font-weight: 700;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  transition: var(--transition);
}
.navbar.scrolled .nav-toggle span { background: var(--text); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Hero */
.hero {
  background: var(--primary-dark);
  background-image: url('../img/banner.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--white);
  padding: 230px 0 150px;
  text-align: center;
}

.hero-tag {
  font-weight: 700;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.hero h1 {
  font-size: 3.75rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
}
.hero-subtitle {
  font-size: 3.75rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 18px;
  letter-spacing: -0.025em;
}
.hero-desc {
  font-size: 1.5rem;
  opacity: 0.72;
  margin-bottom: 34px;
  line-height: 1.55;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 45px;
  border-radius: var(--radius-sm);  
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--accent-gold);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--accent-gold);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(201,162,39,0.32);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.45);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.8);
}
/* Stats */
.stats {
  background: var(--bg);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat-card {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 3rem;
  border-left: 1px solid var(--border);
}
.stat-card:last-child { border-right: 1px solid var(--border);}
.stat-text {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-muted);
  line-height: 1.2;
}

/* Services */
.services { background: var(--white);}
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 35px 22px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.service-card:hover, .service-card.active {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}
.service-icon {
  width: 50px;
  height: 50px;
  background: var(--bg-gray);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.service-icon.icon-red { color: var(--accent-red); }
.service-icon.icon-gold { color: var(--accent-yellow); }
.service-icon.icon-blue { color: var(--color-youth); }
.service-icon.icon-purple { color: var(--color-innovation); }
.service-icon i { font-size: 1.5rem; }
.service-card p {
  font-size: 0.875rem;
  color: var(--text);
  line-height: 1.6;
}
.service-card h3 {
  font-size: 1.125rem;
  line-height: 1.2;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-muted);
}

/* Programs */
.programs { background: var(--white);}
.program-category {
  font-size: 2.1875rem;
  font-weight: 700;
  color: var(--text-muted);
}
.programs-intro {
  margin-bottom: 50px;
}
.program-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.program-card {
  background: var(--white);
  border-radius: 12px;
  padding: 28px 24px;
  box-shadow: 0 1px 4px rgba(10,37,64,0.05);
  transition: var(--transition);
  border: 1px solid #e5e7eb;
}
.program-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.program-card-top {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 16px;
}
.program-card-top i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--bg-gray);
  border-radius: var(--radius);
  font-size: 1.75rem;
}
.program-card[data-color="youth"] .program-card-top i { color: var(--color-youth);}
.program-card[data-color="innovation"] .program-card-top i { color: var(--color-innovation); }
.program-card[data-color="entrepreneur"] .program-card-top i { color: var(--color-entrepreneur); }
.program-card[data-color="engineer"] .program-card-top i { color: var(--color-engineer); }
.program-card[data-color="postdoc"] .program-card-top i { color: var(--color-postdoc); }
.program-card[data-color="torch"] .program-card-top i { color: var(--color-torch); }
.program-card[data-color="excellent"] .program-card-top i { color: var(--color-excellent); }
.program-card-top h4 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-muted);
  line-height: 1.3;
}
.program-bonus {
  font-size: 1.80rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin-bottom: 2px;
  line-height: 1.2;
}
.program-bonus-local {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin-top: 12px;
  line-height: 1.2;
}
.bonus-note {
  font-size: 0.875rem;
  color: var(--text);
}
.program-section {
  border-top: 1px solid #e5e7eb;
  padding-top: 12px;
  margin-top: 12px;
}
.program-section strong {
  display: block;
  font-weight: 600;
  color: var(--text);
}
.program-section ul li {
  font-size: 0.875rem;
  color: var(--text);
  padding: 1px 0 1px 15px;
  position: relative;
  line-height: 1.5;
}
.program-section ul li::before {
  content: '•';
  position: absolute;
  left: 2px;
  top: 3px;
  color: #b0b6bf;
  font-size: 0.75rem;
  line-height: inherit;
}
.program-section.conditions ul li::before {
  content: '✓';
  left: 0;
  top: 3px;
  color: var(--text);
  font-size: 0.8125rem;
  font-weight: 700;
}

.programs .section-label {
  text-transform: none;
  letter-spacing: 0;
}
.programs .section-header h2 {
  font-size: 3.5rem;
  line-height: 1.05;
}
.programs .section-desc {
  max-width: 760px;
}

.programs-grid {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.programs-feature {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.program-feature-card {
  background: var(--white);
  border: 1.5px solid var(--accent-gold);
  border-radius: var(--radius);
  padding: 30px 32px 24px;
}

.program-feature-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.program-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius);
  background: var(--bg-gray);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.program-icon i {
  font-size: 1.75rem;
  color: currentColor;
}

.program-feature-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-muted);
  line-height: 1.25;
}

.program-divider {
  height: 1px;
  background: var(--border);
  margin-bottom: 18px;
}

.program-amount {
  font-size: 1.15rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.35;
}

.program-amount span {
  color: var(--accent-gold);
  font-weight: 800;
}

.program-meta {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.55;
  margin-bottom: 4px;
}

.program-link {
  display: inline-flex;
  align-items: center;
  margin-top: 14px;
  color: var(--accent-gold);
  font-weight: 800;
  font-size: 0.95rem;
}

.programs-mini {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.program-mini-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px;
  display: flex;
  align-items: center;
  gap: 22px;
}

.program-mini-card .program-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius);
}

.program-mini-card[data-color="torch"] .program-icon { color: var(--accent-red); }
.program-mini-card[data-color="engineer"] .program-icon { color: var(--color-engineer); }
.program-mini-card[data-color="postdoc"] .program-icon { color: var(--color-postdoc); }
.program-mini-card[data-color="regional"] .program-icon { color: var(--color-innovation); }

.program-mini-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-muted);
  line-height: 1.2;
}

.program-mini-desc {
  margin-top: 4px;
  font-size: 0.875rem;
  color: var(--text);
  line-height: 1.35;
}

@media (max-width: 992px) {
  .programs-mini { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .logo {font-size: 1.0rem;}
  .programs .section-header h2 { font-size: 1.85rem; }
  .programs-feature { grid-template-columns: 1fr; }
  .programs-mini { grid-template-columns: 1fr; }
  .program-feature-card { padding: 24px 22px 20px; }
  .program-feature-card h3 { font-size: 1.25rem; }
}

/* Benchmarking */
.benchmarking { background: var(--bg);}
.benchmarking-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.benchmarking-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  font-size: 0.875rem;
}
.benchmarking-table thead th {
  padding: 14px 18px 14px 0;
  text-align: left;
  font-weight: 700; 
  font-size: 1.125rem;
  white-space: nowrap;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.benchmarking-table tbody td {
  padding: 14px 18px 14px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text); 
}
.benchmarking-table tbody td strong {
  display: block; 
  color: var(--primary);
  margin-bottom: 2px;
}
.benchmarking-table .en-note {
  font-size: 0.8rem;
  color: var(--text);
  font-weight: 400;
}
.benchmarking-table tbody tr:hover { background: var(--bg); }
@media (max-width: 768px) {
  .benchmarking-table thead th { font-size: 0.8rem; padding: 12px 10px; }
  .benchmarking-table tbody td { font-size: 0.8rem; padding: 14px 10px; }
  .benchmarking-table tbody td:first-child { min-width: 140px; padding-left: 12px; }
  .benchmarking-table tbody td:last-child { padding-right: 12px; }
}

hr{
  margin-top: 10px;
  margin-bottom: 10px;
  border: 0;
  border-top: 1px solid var(--border);
}
/* Partners */
.partners { background: var(--white);}
.partners-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.partner-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.partner-card:hover, .partner-card.active { box-shadow: var(--shadow-hover); border-color: var(--primary); }
.partner-icon {
  width: 50px;
  height: 50px;
  background: var(--bg-gray);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.partner-icon i { font-size: 1.75rem; }
.partner-card:nth-child(1) .partner-icon i { color: #1e88e5; }
.partner-card:nth-child(2) .partner-icon i { color: #8e24aa; }
.partner-card:nth-child(3) .partner-icon i { color: #fb8c00; }
.partner-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text);
}
.partner-subtitle {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.partner-list {
  font-size: 0.875rem;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  max-height: 180px;
  overflow-y: auto;
}
.partner-list li {
  padding: 2px 0 2px 16px;
  position: relative;
}
.partner-list li::before {
  content: '•';
  position: absolute;
  left: 2px;
  top: 2px;
  color: #b0b6bf;
  font-size: 0.75rem;
  line-height: inherit;
}
.partner-scroll::-webkit-scrollbar { width: 6px; }
.partner-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.partner-resources h4 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.partner-resources ul {
  list-style: none;
  padding: 0;
}
.partner-resources ul li {
  font-size: 0.875rem;
  color: var(--text);
  padding: 2px 0 2px 20px;
  position: relative;
  line-height: 1.55;
}
.partner-resources ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  font-weight: 700;
  font-size: 0.75rem;
}
.partner-resources ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  font-weight: 700;
  font-size: 0.75rem;
}

/* Collaboration */
.collaboration { background: var(--bg);}
.collab-subtitle {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-muted);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
}
.budget-note-line {
  font-size: 0.82rem;
  color: var(--text);
  opacity: 0.55;
  font-style: italic;
  font-weight: normal;
  margin: 10px 0 14px 0;
}
.table-wrapper {
  overflow-x: auto;
}
.data-table {
  width: 100%;
  border-collapse: collapse; 
  min-width: 720px;
}
.data-table th {
  padding: 14px 18px 14px 0;
  text-align: left;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.data-table td {
  padding: 14px 18px 14px 0;
  font-size: 0.875rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.data-table tbody tr:hover { background: #f8f9fb; }
.data-table tbody td:first-child { color: #0f4c81; font-weight: 700; }
.data-table td.budget { color: var(--accent-gold); font-weight: 600; white-space: nowrap; }

.events-section { margin-top: 48px; }
.event-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
}
.event-month {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}
.event-text {
  font-size: 0.875rem;
  color: var(--text);
  line-height: 1.45;
}

/* 新闻 - "查看全部"链接 */
.view-more-link {
  display: inline-block;
  margin-top: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
}
.view-more-link:hover {
  color: var(--accent-yellow);
  transform: translateX(4px);
}

/* Achievements / Stories */
.achievements { background: var(--bg-white); }
.stories-list { display: flex; flex-direction: column; gap: 16px; }
.story-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 26px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.story-card:hover, .story-card.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
}
.story-card h4 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin-bottom: 8px;
}
.story-card p {
  font-size: 0.875rem;
  color: var(--text);
  line-height: 1.6;
}
.stories-note {
  font-size: 0.875rem;
  color: var(--text);
  margin-top: 22px;
}

/* Timezone */
.timezone { background: var(--bg-white);}
.timezone-container {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 36px;
  align-items: start;
}
.timezone-office-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-card);
}
.office-icon {
  width: 50px;
  height: 50px;
  background: var(--bg-gray);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.office-icon i { font-size: 1.5rem; color: var(--accent-yellow); }
.timezone-office-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.office-list li {
  display: flex;
  justify-content: flex-start;
  gap: 22px;
  padding: 15px 0;
  border-bottom: 1px solid var(--border);
}
.tz-name {
  width: 40%;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
}
.tz-hours {
  font-size: 0.875rem;
  color: var(--text);
}
.timezone-contact { display: flex; flex-direction: column; gap: 22px; }
.contact-channel {
  display: flex;
  align-items: center;
  gap: 22px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.contact-channel:hover, .contact-channel.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
}
.contact-channel i {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: var(--bg-gray);
}
.contact-channel .icon-whatsapp { color: #25d366; }
.contact-channel .icon-xinfeng { color: #e53935; }
.contact-channel .icon-weixin { color: #43a047; }
.contact-channel h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-muted);
}
.contact-channel p {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
}
.contact-handle {
  font-size: 0.875rem;
  color: var(--accent-gold);  
}

/* Referral Bar */
.referral-bar,.promises-bar {
  background: var(--bg-white);
}
.referral-header { margin-bottom: 38px; }
.referral-header h3 {
  font-size: 2.1875rem;
  color: var(--text-muted);
  font-weight: 700;
}
.referral-header p {
  opacity: 0.8;
  max-width: 580px;
}
.referral-grid {
  background: var(--primary);
  border-radius: var(--radius);
  color: var(--white);  
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-bottom: 28px;
}
/* Promises Bar */
.referral-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: 45px 20px;
  border-right: 1px solid #5782a7;
}
.referral-item:last-child {
  border-right: 0px;
}
.referral-item i { font-size: 3.5rem; line-height: 1.0; color: var(--accent-gold); }
.referral-item h3 {
  font-size: 1.125rem;
  line-height: 1.2;
}
.referral-item p {
  opacity: 0.9;  
 font-size: 0.875rem;
  line-height: 1.5;
}

.promises-grid .referral-item span{
  font-weight: 700;
}
.referral-promise {
  font-size: 0.875rem;
  opacity: 0.65;
  max-width: 620px;
}

/* CTA Bar */
.cta-bar { background: var(--bg);}
.cta-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
}
.cta-content i {
  font-size: 3.5rem;
  color: var(--primary);
  flex-shrink: 0;
}
.cta-content p {
  font-size: 1.125rem;
  max-width: 520px;
}

/* Footer */
.footer {
  background: var(--bg-white);
  border-top: 1px solid var(--border);
  padding: 28px 0;
}
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.footer-brand {
  font-size: 0.875rem;
  color: var(--text);
  font-weight: 500;
}
.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
}
.footer-links a, .footer-links span {
  font-size: 0.875rem;
  color: var(--text);
}
.footer-disclaimer {
  font-size: 0.75rem;
  color: var(--text);
  opacity: 0.45;
  font-style: italic;
}
.footer-links a:hover { color: var(--primary); }

/* Floating Sidebar */
.side-bar {
  position: fixed;
  bottom: 85px;
  right: 20px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  background: var(--white); 
  box-shadow: 0 4px 18px rgba(0,0,0,0.14);  
}
.side-item {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;  
  transition: var(--transition);
  border-bottom: 1px solid var(--border);
  background: var(--white);
  text-decoration: none;
}
.side-item i{
  font-size: 1.375rem;
}
.side-item:last-child { border-bottom: none; }
.side-item:hover { background: var(--primary); color: var(--white); border-color: var(--primary); transform: scale(1.05); }
.side-item.whatsapp { color: #25D366; }
.side-item.email { color: #E53935; }
.side-item.wechat { color: #07C160; }

/* 悬浮提示层 - hover时显示对应内容 */
.side-item { position: relative; }
.side-tip {
  position: absolute;
  right: 62px;
  top: 50%;
  transform: translateY(-50%);
  padding: 8px 16px;
  background: var(--primary-dark);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
  pointer-events: none;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}
.side-tip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: var(--primary-dark);
}
.side-item:hover .side-tip {
  opacity: 1;
  visibility: visible;
}

/* Back to Top (below the sidebar) */
.backToTop {  
  transition: var(--transition);
  opacity: 0;
  height: 0;
  visibility: hidden; 
}
.backToTop.visible { opacity: 1; height: 50px; visibility: visible; }


/* Responsive */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px 0; }
  .stat-card { padding: 8px 5px; }
  .stat-card:nth-child(2) {
    border-right: 1px solid var(--border);
}
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .program-cards { grid-template-columns: repeat(2, 1fr); }  
  .partners-grid { grid-template-columns: 1fr; }
  .benchmarking-cards { grid-template-columns: 1fr; }
  .referral-grid { grid-template-columns: repeat(2, 1fr); gap: 0px;}
  .timezone-container { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  html { font-size: 14px; }
  section { padding: 25px 0; }
  .hero { padding: 130px 0 72px; }
  .hero h1, .hero-subtitle { font-size: 2rem; }
  .hero-desc { font-size: 1.125rem; }
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 72%;
    max-width: 300px;
    height: 100vh;
    background: var(--primary-dark);
    flex-direction: column;
    padding: 84px 28px 28px;
    gap: 0;
    transition: var(--transition);
    box-shadow: -4px 0 18px rgba(0,0,0,0.18);
    align-items: flex-start;
  }
  .nav-menu.active { right: 0; }
  .nav-menu li{
    width: 100%;
  }
  .nav-menu a { display: block; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.12); width: 100%; }
  .lang-switch { margin-left: auto; margin-right: 12px; }

  .section-header h2 { font-size: 1.5rem; }
  .program-category{ font-size: 1.45rem;}
  
  .services-grid,
  .program-cards{
    grid-template-columns: 1fr;
  }
  .referral-item{ padding: 16px 10px; }
  .footer-content { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero h1, .hero-subtitle { font-size: 1.625rem; }  
  .btn { padding: 12px 22px;}
  .program-card, .partner-card { padding: 22px; }
  .referral-bar { padding: 44px 0; }
  .cta-content { flex-direction: column; text-align: center; }
  .office-list li { flex-direction: column; gap: 4px; }
  .tz-hours { text-align: left; }
  .side-bar { bottom: 78px; right: 16px; }
  .back-to-top { bottom: 16px; right: 16px; }
}

@media print {
  .navbar, .side-bar, .back-to-top { display: none !important; }
  section { padding: 24px 0; page-break-inside: avoid; }
}