/* ================================================================
   Vodafone-Inspired Design System — 桂林理工大学 产教融合定向培养班
   ================================================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* === COLORS === */
  --color-primary: #e60000;
  --color-on-primary: #ffffff;
  --color-ink: #25282b;
  --color-body: #7e7e7e;
  --color-mute: #bebebe;
  --color-canvas: #ffffff;
  --color-canvas-soft: #f2f2f2;
  --color-on-dark: #ffffff;

  /* === FONT FAMILY === */
  --font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;

  /* === TYPOGRAPHY (shorthand: weight size/line-height) === */
  --text-display-hero: 800 144px/114px var(--font-family);
  --text-display-xl: 800 90px/84px var(--font-family);
  --text-display-lg: 300 48px/52px var(--font-family);
  --text-display-md: 300 40px/44px var(--font-family);
  --text-display-sm: 700 32px/40px var(--font-family);
  --text-display-xs: 700 24px/24px var(--font-family);
  --text-eyebrow: 600 12px/16px var(--font-family);
  --text-body-lg: 400 22px/32px var(--font-family);
  --text-body-md: 400 18px/28px var(--font-family);
  --text-body-sm: 400 16px/20px var(--font-family);
  --text-caption: 400 14px/16px var(--font-family);
  --text-caption-strong: 700 14px/21px var(--font-family);
  --text-caption-upper: 600 12px/16px var(--font-family);
  --text-button-md: 400 18px/28px var(--font-family);

  /* === BORDER RADIUS === */
  --rounded-none: 0;
  --rounded-sm: 6px;
  --rounded-card: 6px;
  --rounded-pill-md: 32px;
  --rounded-pill-lg: 60px;
  --rounded-full: 9999px;

  /* === SPACING (base 4px) === */
  --space-xxs: 2px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 20px;
  --space-2xl: 24px;
  --space-3xl: 32px;
  --space-4xl: 48px;
  --space-5xl: 64px;
  --space-6xl: 80px;

  /* === LAYOUT === */
  --container-max: 1200px;
  --nav-height: 64px;
}


/* ================================================================
   RESET & BASE
   ================================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  font: var(--text-body-md);
  color: var(--color-ink);
  background: var(--color-canvas);
  line-height: 1.5;
}

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

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

ul {
  list-style: none;
}


/* ================================================================
   LAYOUT UTILITIES
   ================================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-3xl);
}

/* ================================================================
   TYPOGRAPHY UTILITY CLASSES
   ================================================================ */
.display-hero {
  font: var(--text-display-hero);
  letter-spacing: -1px;
  text-transform: uppercase;
}
.display-xl {
  font: var(--text-display-xl);
}
.display-lg {
  font: var(--text-display-lg);
}
.display-md {
  font: var(--text-display-md);
}
.display-sm {
  font: var(--text-display-sm);
}
.display-xs {
  font: var(--text-display-xs);
}
.eyebrow {
  font: var(--text-eyebrow);
  letter-spacing: 0.57px;
  text-transform: uppercase;
  color: var(--color-mute);
}
.body-lg {
  font: var(--text-body-lg);
  color: var(--color-body);
}
.body-md {
  font: var(--text-body-md);
  color: var(--color-body);
}
.body-sm {
  font: var(--text-body-sm);
  color: var(--color-body);
}
.caption-strong {
  font: var(--text-caption-strong);
}
.caption-upper {
  font: var(--text-caption-upper);
  letter-spacing: 0.57px;
  text-transform: uppercase;
}

/* On dark surfaces */
.on-dark { color: var(--color-on-dark); }
.on-dark .eyebrow { color: rgba(255,255,255,0.5); }
.on-dark .body-lg,
.on-dark .body-md,
.on-dark .body-sm { color: rgba(255,255,255,0.8); }
.on-dark .display-lg,
.on-dark .display-md,
.on-dark .display-sm,
.on-dark .display-xs { color: var(--color-on-dark); }

/* On red surfaces */
.on-primary .eyebrow { color: rgba(255,255,255,0.7); }
.on-primary .body-lg,
.on-primary .body-md,
.on-primary .body-sm { color: rgba(255,255,255,0.9); }
.on-primary .display-lg,
.on-primary .display-md,
.on-primary .display-sm,
.on-primary .display-xs { color: var(--color-on-primary); }


/* ================================================================
   SECTION HEADER (shared pattern)
   ================================================================ */
.section-header {
  margin-bottom: var(--space-4xl);
  text-align: center;
}
.section-header .eyebrow {
  margin-bottom: var(--space-sm);
}
.section-header .display-lg {
  margin-bottom: var(--space-md);
}
.section-header .body-lg {
  max-width: none;
  margin: 0 auto;
  white-space: nowrap;
}


/* ================================================================
   NAVIGATION BAR
   ================================================================ */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: var(--color-ink);
  color: var(--color-on-dark);
  padding: 0 var(--space-3xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-md);
  line-height: 1.2;
}
.nav-logo .nav-emblem {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex-shrink: 0;
}
.nav-logo .nav-logo-text {
  display: flex;
  flex-direction: column;
}
.nav-logo .logo-main {
  font: 700 18px/1.2 var(--font-family);
  color: var(--color-on-dark);
}
.nav-logo .logo-sub {
  font: 400 12px/1.2 var(--font-family);
  color: var(--color-mute);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-3xl);
}
.nav-links a {
  font: var(--text-body-sm);
  color: var(--color-on-dark);
  transition: color 0.2s ease;
  position: relative;
  padding: var(--space-xs) 0;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}


/* ================================================================
   HERO BANDS
   ================================================================ */
.hero-band-dark {
  background: var(--color-ink);
  color: var(--color-on-dark);
  min-height: 100vh;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding-bottom: var(--space-6xl);
}
.hero-band-dark .hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}
.hero-band-dark .hero-bg.active {
  opacity: 0.7;
}
.hero-band-dark .hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(37,40,43,0.85) 0%,
    rgba(37,40,43,0.7) 35%,
    rgba(37,40,43,0.25) 65%,
    rgba(37,40,43,0.05) 100%
  );
}
.hero-arrow {
  position: absolute;
  z-index: 3;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border: none;
  border-radius: var(--rounded-full);
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.7);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, color 0.2s ease;
  backdrop-filter: blur(4px);
}
.hero-arrow:hover {
  background: rgba(255,255,255,0.25);
  color: #fff;
}
.hero-arrow-left  { left:  var(--space-3xl); }
.hero-arrow-right { right: var(--space-3xl); }
.hero-band-dark .hero-content {
  position: relative;
  z-index: 2;
  max-width: 580px;
  margin: 0;
  padding: var(--space-6xl) var(--space-3xl) var(--space-6xl) 100px;
}
.hero-band-dark .hero-content .hero-emblem {
  width: 72px;
  height: 72px;
  object-fit: contain;
  margin-bottom: var(--space-xl);
}
.hero-band-dark .hero-content .eyebrow {
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-lg);
}
.hero-band-dark .hero-content h1 {
  font: 800 56px/64px var(--font-family);
  color: var(--color-on-dark);
  margin-bottom: var(--space-sm);
}
.hero-band-dark .hero-content .hero-subtitle {
  font: 300 32px/40px var(--font-family);
  color: rgba(255,255,255,0.8);
  margin-bottom: var(--space-2xl);
}
.hero-band-dark .hero-content .hero-body {
  font: var(--text-body-md);
  color: rgba(255,255,255,0.75);
  max-width: 620px;
  margin-bottom: var(--space-2xl);
  line-height: 1.6;
}
.hero-band-dark .hero-stats {
  display: flex;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}
.hero-band-dark .hero-stat {
  text-align: center;
}
.hero-band-dark .hero-stat .stat-num {
  font: 800 36px/1 var(--font-family);
  color: var(--color-primary);
}
.hero-band-dark .hero-stat .stat-label {
  font: var(--text-body-sm);
  color: rgba(255,255,255,0.6);
  margin-top: var(--space-xs);
  white-space: nowrap;
}

/* Hero Band Red */
.hero-band-red {
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: var(--space-6xl) var(--space-3xl);
  position: relative;
  overflow: hidden;
}
.hero-band-red::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
}
.hero-band-red .container {
  position: relative;
  z-index: 1;
}


/* ================================================================
   CONTENT BANDS
   ================================================================ */
.content-band-light {
  background: var(--color-canvas);
  color: var(--color-ink);
  padding: var(--space-6xl) var(--space-3xl);
}
.content-band-dark {
  background: var(--color-ink);
  color: var(--color-on-dark);
  padding: var(--space-6xl) var(--space-3xl);
}


/* ================================================================
   BUTTONS
   ================================================================ */
.btn {
  display: inline-block;
  font: var(--text-button-md);
  padding: var(--space-md) var(--space-2xl);
  border-radius: var(--rounded-pill-lg);
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: #cc0000;
  border-color: #cc0000;
}
.btn-outline-red {
  background: var(--color-canvas);
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline-red:hover {
  background: var(--color-primary);
  color: var(--color-on-primary);
}
.btn-outline-on-dark {
  background: transparent;
  color: var(--color-on-dark);
  border-color: var(--color-on-dark);
}
.btn-outline-on-dark:hover {
  background: rgba(255,255,255,0.15);
}
.btn-outline-on-red {
  background: transparent;
  color: var(--color-on-primary);
  border-color: rgba(255,255,255,0.5);
}
.btn-outline-on-red:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--color-on-primary);
}
.btn-lg {
  padding: var(--space-lg) var(--space-3xl);
  font: 700 20px/28px var(--font-family);
}


/* ================================================================
   CARDS
   ================================================================ */
.card-content {
  background: var(--color-canvas);
  color: var(--color-ink);
  border-radius: var(--rounded-card);
  padding: var(--space-2xl);
  overflow: hidden;
}
.card-content .card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--rounded-sm);
  margin-bottom: var(--space-xl);
  background: var(--color-canvas-soft);
}
.card-content .card-badge {
  display: inline-block;
  margin-bottom: var(--space-md);
}
.card-content .card-title {
  font: var(--text-display-sm);
  color: var(--color-ink);
  margin-bottom: var(--space-sm);
}
.card-content .card-desc {
  font: var(--text-body-md);
  color: var(--color-body);
  margin-bottom: var(--space-lg);
}
.card-content .card-partner {
  font: var(--text-body-sm);
  color: var(--color-mute);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-canvas-soft);
}


/* ================================================================
   BADGE CHIPS
   ================================================================ */
.badge-chip {
  display: inline-block;
  background: var(--color-canvas-soft);
  color: var(--color-ink);
  font: var(--text-caption-strong);
  border-radius: var(--rounded-pill-md);
  padding: var(--space-xs) var(--space-md);
  white-space: nowrap;
}
.badge-chip-on-dark {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  color: var(--color-on-dark);
  font: var(--text-caption-strong);
  border-radius: var(--rounded-pill-md);
  padding: var(--space-xs) var(--space-md);
  white-space: nowrap;
}
.badge-chip-on-red {
  display: inline-block;
  background: rgba(255,255,255,0.18);
  color: var(--color-on-primary);
  font: var(--text-caption-strong);
  border-radius: var(--rounded-pill-md);
  padding: var(--space-xs) var(--space-md);
  white-space: nowrap;
}
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}


/* ================================================================
   TEXT INPUT
   ================================================================ */
.text-input {
  background: var(--color-canvas);
  color: var(--color-ink);
  border: 1px solid var(--color-mute);
  font: var(--text-body-sm);
  border-radius: var(--rounded-sm);
  padding: var(--space-md) var(--space-lg);
  width: 100%;
  outline: none;
  transition: border-color 0.2s ease;
}
.text-input:focus {
  border-color: var(--color-ink);
}
.text-input::placeholder {
  color: var(--color-mute);
}


/* ================================================================
   GRID SYSTEMS
   ================================================================ */
.card-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2xl);
}
.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
}
.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2xl);
}


/* ================================================================
   SECTION 2: 产教融合
   ================================================================ */
.integration-body {
  max-width: 800px;
  margin: 0 auto;
}
.integration-body .body-lg {
  margin-bottom: var(--space-3xl);
  line-height: 1.7;
}
.integration-body .badge-row {
  justify-content: center;
  margin-bottom: var(--space-3xl);
}
.cert-highlight {
  background: rgba(230, 0, 0, 0.05);
  border: 1px solid rgba(230, 0, 0, 0.12);
  border-radius: var(--rounded-card);
  padding: var(--space-2xl);
  text-align: center;
  margin-bottom: var(--space-3xl);
}
.cert-highlight .cert-title {
  font: var(--text-display-sm);
  color: var(--color-ink);
  margin-bottom: var(--space-sm);
}
.cert-highlight .cert-desc {
  font: var(--text-body-md);
  color: var(--color-body);
}
.cert-highlight .cert-icons {
  display: flex;
  justify-content: center;
  gap: var(--space-3xl);
  margin-top: var(--space-xl);
}
.cert-highlight .cert-icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}
.cert-highlight .cert-icon-circle {
  width: 64px;
  height: 64px;
  border-radius: var(--rounded-full);
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.cert-highlight .cert-icon-circle .cert-icon-text {
  font: 700 16px/1 var(--font-family);
  color: var(--color-on-primary);
}
.cert-highlight .cert-icon-label {
  font: var(--text-caption-strong);
  color: var(--color-body);
}


/* ================================================================
   SECTION 4: 战略合作名企
   ================================================================ */
#partners {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
#partners .container {
  max-width: 1400px;
}
.partner-groups {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3xl);
}
.partner-group {
  text-align: center;
}
.partner-group .partner-group-title {
  font: var(--text-display-xs);
  color: var(--color-on-dark);
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-xl);
  border-bottom: 2px solid var(--color-primary);
}
.partner-group .partner-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}
.partner-item {
  background: var(--color-canvas);
  border-radius: var(--rounded-sm);
  padding: var(--space-xl) var(--space-2xl);
  border-left: 3px solid transparent;
  aspect-ratio: 2 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.partner-item:hover {
  transform: translateX(4px);
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
  border-left-color: var(--color-primary);
}
.partner-logo {
  display: block;
  max-width: 100%;
  height: 80px;
  width: auto;
  object-fit: contain;
  margin: 0 auto;
}


/* ================================================================
   SECTION 5: 产教融合班十大优势总结
   ================================================================ */
.top10-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2xl);
}
.top10-card {
  background: rgba(255,255,255,0.06);
  border-radius: var(--rounded-card);
  padding: var(--space-3xl);
  border: 1px solid rgba(255,255,255,0.08);
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}
.top10-card:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,0.10);
  border-color: rgba(255,255,255,0.16);
}
.top10-card .top10-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--rounded-full);
  background: var(--color-primary);
  color: var(--color-on-primary);
  font: 700 16px/1 var(--font-family);
  margin-bottom: var(--space-lg);
}
.top10-card .top10-title {
  font: var(--text-display-xs);
  color: var(--color-on-dark);
  margin-bottom: var(--space-md);
}
.top10-card .top10-desc {
  font: var(--text-body-sm);
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
}

/* ================================================================
   SECTION 6: 招生对象与报读方式
   ================================================================ */
.admission-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}
.target-card {
  background: var(--color-canvas-soft);
  border-radius: var(--rounded-card);
  padding: var(--space-3xl);
}
.target-card .target-title {
  font: var(--text-display-sm);
  color: var(--color-ink);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 2px solid var(--color-primary);
}
.target-card .target-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}
.target-card .target-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  font: var(--text-body-md);
  color: var(--color-body);
}
.target-card .target-item .target-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: var(--rounded-full);
  background: var(--color-primary);
  position: relative;
  margin-top: 2px;
}
.target-card .target-item .target-icon::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 7px;
  width: 10px;
  height: 6px;
  border-left: 2px solid var(--color-on-primary);
  border-bottom: 2px solid var(--color-on-primary);
  transform: rotate(-45deg);
}

/* Process Flow */
.process-flow {
  display: flex;
  gap: var(--space-lg);
  align-items: stretch;
}
.process-step {
  flex: 1;
  background: var(--color-canvas);
  border-radius: var(--rounded-card);
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
  position: relative;
  border: 1px solid var(--color-canvas-soft);
  transition: transform 0.2s ease;
}
.process-step:hover {
  transform: translateY(-4px);
}
.process-step .step-num {
  width: 40px;
  height: 40px;
  border-radius: var(--rounded-full);
  background: var(--color-primary);
  color: var(--color-on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font: 700 18px/1 var(--font-family);
  margin: 0 auto var(--space-md);
}
.process-step .step-title {
  font: var(--text-display-xs);
  color: var(--color-ink);
  margin-bottom: var(--space-sm);
}
.process-step .step-desc {
  font: var(--text-body-sm);
  color: var(--color-body);
}
.process-step::after {
  content: '→';
  position: absolute;
  right: -18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-mute);
  font-weight: 700;
}
.process-step:last-child::after {
  display: none;
}
.admission-mode {
  text-align: center;
  font: var(--text-body-lg);
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--space-3xl);
}
.cta-center {
  text-align: center;
}


/* ================================================================
   SECTION 7: 核心优势
   ================================================================ */
.advantage-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}
.advantage-item {
  flex: 0 0 calc(25% - var(--space-2xl) * 3 / 4);
  text-align: center;
  padding: var(--space-2xl);
  background: var(--color-canvas);
  border: 1px solid var(--color-canvas-soft);
  border-radius: var(--rounded-card);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.advantage-item:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}
.advantage-item .advantage-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--rounded-full);
  background: rgba(230, 0, 0, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  font-size: 22px;
  color: var(--color-primary);
  line-height: 1;
}
.advantage-item .advantage-title {
  font: var(--text-display-xs);
  color: var(--color-ink);
  margin-bottom: var(--space-sm);
}
.advantage-item .advantage-desc {
  font: var(--text-body-sm);
  color: var(--color-body);
}


/* ================================================================
   FOOTER
   ================================================================ */
.footer {
  background: var(--color-ink);
  color: var(--color-on-dark);
  padding: var(--space-5xl) var(--space-3xl) var(--space-3xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-4xl);
  margin-bottom: var(--space-4xl);
}
.footer-col h4 {
  font: var(--text-caption-upper);
  color: var(--color-mute);
  margin-bottom: var(--space-xl);
  text-transform: uppercase;
  letter-spacing: 0.57px;
}
.footer-col .footer-logo {
  font: 700 20px/1.3 var(--font-family);
  color: var(--color-on-dark);
  margin-bottom: var(--space-sm);
}
.footer-col .footer-logo-sub {
  font: 400 13px/1.3 var(--font-family);
  color: var(--color-mute);
  margin-bottom: var(--space-xl);
}
.footer-col .footer-desc {
  font: var(--text-body-sm);
  color: var(--color-body);
  line-height: 1.6;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.footer-links a {
  font: var(--text-body-sm);
  color: var(--color-body);
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: var(--color-on-dark);
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.footer-contact p {
  font: var(--text-body-sm);
  color: var(--color-body);
  white-space: nowrap;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-2xl);
  text-align: center;
  font: var(--text-caption);
  color: var(--color-mute);
}


/* ================================================================
   NOTIFICATION TOAST
   ================================================================ */
.toast-container {
  position: fixed;
  bottom: var(--space-2xl);
  right: var(--space-2xl);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.toast {
  background: var(--color-canvas);
  color: var(--color-ink);
  border-radius: var(--rounded-sm);
  padding: var(--space-md) var(--space-lg);
  font: var(--text-body-sm);
  box-shadow: 0 2px 12px rgba(0,0,0,0.12);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-width: 280px;
  max-width: 400px;
  animation: toast-in 0.3s ease forwards;
}
.toast.toast-success {
  border-left: 3px solid #2ecc71;
}
.toast.toast-error {
  border-left: 3px solid var(--color-primary);
}
.toast.toast-info {
  border-left: 3px solid var(--color-ink);
}
.toast .toast-close {
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 18px;
  color: var(--color-mute);
  padding: 0;
  line-height: 1;
  transition: color 0.2s;
}
.toast .toast-close:hover {
  color: var(--color-ink);
}
.toast.toast-exit {
  animation: toast-out 0.3s ease forwards;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(60px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes toast-out {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(60px); }
}


/* ================================================================
   SCROLL-TRIGGERED FADE
   ================================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}


/* ================================================================
   MISC
   ================================================================ */
section {
  scroll-margin-top: var(--nav-height);
}
.intro-quote {
  font: 300 24px/34px var(--font-family);
  color: var(--color-body);
  font-style: italic;
  max-width: none;
  margin: 0 auto var(--space-3xl);
  text-align: center;
  white-space: nowrap;
}


/* ================================================================
   RESPONSIVE — TABLET (max-width: 1024px)
   ================================================================ */
@media (max-width: 1024px) {
  :root {
    --container-max: 100%;
    --nav-height: 56px;
  }

  /* --- Nav --- */
  .nav-bar {
    padding: 0 var(--space-xl);
  }
  .nav-links {
    gap: var(--space-lg);
  }
  .nav-links a {
    font-size: 13px;
  }
  .nav-logo .logo-main {
    font-size: 15px;
  }
  .nav-logo .logo-sub {
    font-size: 10px;
  }
  .nav-logo .nav-emblem {
    width: 32px;
    height: 32px;
  }

  /* --- Container --- */
  .container {
    padding: 0 var(--space-xl);
  }

  /* --- Hero --- */
  .hero-band-dark {
    min-height: 80vh;
    padding-bottom: var(--space-4xl);
  }
  .hero-band-dark .hero-content {
    max-width: 100%;
    padding: var(--space-5xl) var(--space-2xl) var(--space-3xl) var(--space-2xl);
  }
  .hero-band-dark .hero-content h1 {
    font: 800 40px/48px var(--font-family);
  }
  .hero-band-dark .hero-content .hero-subtitle {
    font: 300 22px/30px var(--font-family);
  }
  .hero-band-dark .hero-stats {
    gap: var(--space-xl);
  }
  .hero-band-dark .hero-stat .stat-num {
    font-size: 28px;
  }
  .hero-arrow {
    width: 36px;
    height: 36px;
    font-size: 22px;
  }
  .hero-arrow-left  { left:  var(--space-md); }
  .hero-arrow-right { right: var(--space-md); }

  /* --- Content bands --- */
  .content-band-light,
  .content-band-dark {
    padding: var(--space-4xl) var(--space-xl);
  }

  /* --- Section header --- */
  .section-header {
    margin-bottom: var(--space-3xl);
  }
  .section-header .body-lg {
    white-space: normal;
  }
  .section-header .display-lg {
    font: 300 32px/36px var(--font-family);
  }

  /* --- Partner grid: 4 → 2 --- */
  .partner-groups {
    grid-template-columns: repeat(2, 1fr);
  }

  /* --- Card grid 3 → 2 --- */
  .card-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  /* --- Advantage grid: 4 → 2 --- */
  .advantage-item {
    flex: 0 0 calc(50% - var(--space-2xl) / 2);
  }

  /* --- Admission layout: stack --- */
  .admission-layout {
    grid-template-columns: 1fr;
  }

  /* --- Footer: stack --- */
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}


/* ================================================================
   RESPONSIVE — MOBILE (max-width: 768px)
   ================================================================ */
@media (max-width: 768px) {
  :root {
    --space-3xl: 20px;
    --space-4xl: 28px;
    --space-5xl: 36px;
    --space-6xl: 48px;
  }

  /* --- Hamburger Button --- */
  .nav-hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1100;
    padding: 0;
  }
  .hamburger-line {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-on-dark);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .nav-hamburger.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
  }
  .nav-hamburger.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* --- Mobile Nav Menu --- */
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 260px;
    height: 100vh;
    background: var(--color-ink);
    flex-direction: column;
    align-items: flex-start;
    padding: 80px var(--space-2xl) var(--space-3xl);
    gap: var(--space-lg);
    transition: right 0.35s ease;
    z-index: 1050;
    box-shadow: -4px 0 20px rgba(0,0,0,0.3);
  }
  .nav-links.open {
    right: 0;
  }
  .nav-links a {
    font: 400 16px/1.5 var(--font-family);
    padding: var(--space-sm) 0;
    width: 100%;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .nav-links a.active::after {
    display: none;
  }

  /* Mobile menu backdrop */
  .nav-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1040;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
  }
  .nav-backdrop.show {
    opacity: 1;
    pointer-events: auto;
  }

  /* --- Container --- */
  .container {
    padding: 0 var(--space-lg);
  }

  /* --- Nav Logo (smaller) --- */
  .nav-logo .logo-main {
    font-size: 14px;
  }
  .nav-logo .logo-sub {
    font: 400 9px/1.2 var(--font-family);
  }
  .nav-logo .nav-emblem {
    width: 28px;
    height: 28px;
  }

  /* --- Hero --- */
  .hero-band-dark {
    min-height: 75vh;
    align-items: center;
    padding-bottom: var(--space-3xl);
  }
  .hero-band-dark .hero-overlay {
    background: linear-gradient(
      0deg,
      rgba(37,40,43,0.9) 0%,
      rgba(37,40,43,0.7) 40%,
      rgba(37,40,43,0.25) 100%
    );
  }
  .hero-band-dark .hero-content {
    padding: var(--space-6xl) var(--space-xl) var(--space-2xl);
    text-align: center;
    max-width: 100%;
  }
  .hero-band-dark .hero-content h1 {
    font: 800 24px/30px var(--font-family);
  }
  .hero-band-dark .hero-content .hero-subtitle {
    font: 300 14px/20px var(--font-family);
    margin-bottom: var(--space-md);
  }
  .hero-band-dark .hero-content .hero-body {
    font-size: 13px;
    line-height: 1.5;
  }
  .hero-band-dark .hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }
  .hero-band-dark .hero-stat .stat-num {
    font-size: 24px;
  }
  .hero-band-dark .hero-stat .stat-label {
    font-size: 12px;
  }
  .hero-band-dark .hero-content .eyebrow {
    margin-bottom: var(--space-md);
  }
  .hero-arrow {
    width: 32px;
    height: 32px;
    font-size: 18px;
    top: auto;
    bottom: var(--space-xl);
    transform: none;
  }
  .hero-arrow-left  { left:  var(--space-lg); }
  .hero-arrow-right { left: calc(var(--space-lg) + 44px); }

  /* --- Content bands --- */
  .content-band-light,
  .content-band-dark {
    padding: var(--space-5xl) var(--space-lg);
  }

  /* --- Typography --- */
  .display-lg {
    font: 300 22px/26px var(--font-family) !important;
  }
  .display-sm {
    font: 700 18px/22px var(--font-family) !important;
  }
  .display-xs {
    font: 700 16px/20px var(--font-family) !important;
  }
  .body-lg {
    font: 400 14px/20px var(--font-family);
  }
  .body-md {
    font: 400 13px/18px var(--font-family);
  }
  .body-sm {
    font: 400 12px/16px var(--font-family);
  }
  .intro-quote {
    font: 300 16px/22px var(--font-family);
    margin-bottom: var(--space-2xl);
    white-space: normal;
  }

  /* --- Section header --- */
  .section-header {
    margin-bottom: var(--space-3xl);
  }
  .section-header .body-lg {
    white-space: normal;
  }

  /* --- Integration body --- */
  .integration-body .badge-row {
    justify-content: center;
    gap: var(--space-sm);
  }
  .badge-chip {
    font-size: 12px;
    padding: var(--space-xs) var(--space-sm);
  }
  .cert-highlight {
    padding: var(--space-xl);
  }
  .cert-highlight .cert-icons {
    gap: var(--space-xl);
  }
  .cert-highlight .cert-icon-circle {
    width: 48px;
    height: 48px;
  }
  .cert-highlight .cert-icon-circle .cert-icon-text {
    font-size: 13px;
  }

  /* --- All card grids → 1 column --- */
  .card-grid-3,
  .card-grid-2,
  .card-grid-4 {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  .card-content {
    padding: var(--space-lg);
  }
  .card-content .card-image {
    aspect-ratio: 4 / 3;
  }
  .card-content .card-title {
    font: 700 18px/22px var(--font-family);
  }

  /* --- Partner section --- */
  #partners {
    min-height: auto;
  }
  .partner-groups {
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
  }
  .partner-group .partner-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }
  .partner-item {
    aspect-ratio: auto;
    padding: var(--space-lg);
  }
  .partner-logo {
    height: 48px;
  }

  /* --- Top 10 grid → 2 columns --- */
  .top10-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }
  .top10-card {
    padding: var(--space-lg);
  }
  .top10-card .top10-num {
    width: 28px;
    height: 28px;
    font-size: 13px;
    margin-bottom: var(--space-sm);
  }
  .top10-card .top10-title {
    font-size: 15px;
    margin-bottom: var(--space-xs);
  }
  .top10-card .top10-desc {
    font-size: 11px;
    line-height: 1.5;
  }

  /* --- Admission --- */
  .admission-layout {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  .target-card {
    padding: var(--space-xl);
  }
  .target-card .target-title {
    font: 700 18px/22px var(--font-family);
    margin-bottom: var(--space-lg);
  }
  .target-card .target-item {
    font-size: 14px;
  }

  /* Process: vertical stack with down arrows */
  .process-flow {
    flex-direction: column;
    gap: var(--space-md);
  }
  .process-step {
    padding: var(--space-lg);
    text-align: left;
    display: flex;
    align-items: center;
    gap: var(--space-lg);
  }
  .process-step .step-num {
    margin: 0;
    flex-shrink: 0;
  }
  .process-step::after {
    content: '↓';
    right: auto;
    left: 20px;
    top: auto;
    bottom: -22px;
    transform: none;
    font-size: 16px;
  }
  .process-step:last-child::after {
    display: none;
  }

  /* --- Advantages: 2 columns --- */
  .advantage-grid {
    gap: var(--space-lg);
  }
  .advantage-item {
    flex: 0 0 calc(50% - var(--space-lg) / 2);
    padding: var(--space-md);
  }
  .advantage-item .advantage-icon {
    width: 36px;
    height: 36px;
    margin-bottom: var(--space-sm);
  }

  /* --- Button --- */
  .btn-lg {
    padding: var(--space-md) var(--space-xl);
    font: 700 16px/22px var(--font-family);
  }

  /* --- Footer --- */
  .footer {
    padding: var(--space-4xl) var(--space-lg) var(--space-2xl);
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
  }
  .footer-bottom {
    font-size: 12px;
  }

  /* --- Toast --- */
  .toast-container {
    bottom: var(--space-lg);
    right: var(--space-lg);
    left: var(--space-lg);
  }
  .toast {
    min-width: auto;
    max-width: 100%;
    font-size: 14px;
  }

  /* --- Fade-in animation: reduce offset --- */
  .fade-in {
    transform: translateY(12px);
  }

  /* --- Partner hover: disable slide on mobile --- */
  .partner-item:hover {
    transform: none;
  }
  .top10-card:hover {
    transform: none;
  }
  .process-step:hover {
    transform: none;
  }
  .advantage-item:hover {
    transform: none;
  }
}


/* ================================================================
   RESPONSIVE — SMALL MOBILE (max-width: 380px)
   ================================================================ */
@media (max-width: 380px) {
  .hero-band-dark .hero-content h1 {
    font: 800 22px/28px var(--font-family);
  }
  .hero-band-dark .hero-content .hero-subtitle {
    font: 300 14px/20px var(--font-family);
  }
  .hero-band-dark .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }
  .hero-band-dark .hero-stat .stat-num {
    font-size: 20px;
  }
  .nav-logo .logo-main {
    font-size: 13px;
  }
  .nav-logo .logo-sub {
    display: none;
  }
  .partner-groups {
    gap: var(--space-2xl);
  }
}