/* =========================================
   EJN — Global Stylesheet
   Color palette (Light / Green Theme):
   --bg:        #F6FBF7  (soft off-white, faint green tint)
   --surface:   #FFFFFF  (white cards)
   --surface2:  #EFF8F1  (light green-tinted surface, hover state)
   --border:    #D7EBDC  (soft green border)
   --accent:    #16A34A  (fresh green)
   --accent2:   #15803D  (deep green)
   --text-main: #16231A  (near-black, slight green tint)
   --text-muted:#4B5D53  (muted gray-green)
   --highlight: #E7F6EB  (light green tint)
   --highlight2:#DCF2E2  (deeper light green tint)
   ========================================= */

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

:root {
  --bg: #F6FBF7;
  --surface: #FFFFFF;
  --surface2: #EFF8F1;
  --border: #D7EBDC;
  --accent: #16A34A;
  --accent2: #15803D;
  --text-main: #16231A;
  --text-muted: #4B5D53;
  --highlight: #E7F6EB;
  --highlight2: #DCF2E2;
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
  --font-display: 'Poppins', sans-serif;
  --font-body: 'Poppins', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-weight: 500;
  background: var(--bg);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ---- Ambient blobs ---- */
.bg-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.10;
  pointer-events: none;
  z-index: 0;
}
.blob-1 {
  width: 500px; height: 500px;
  background: #16A34A;
  top: -150px; left: -150px;
}
.blob-2 {
  width: 400px; height: 400px;
  background: #22C55E;
  bottom: 60px; right: -100px;
}
.blob-3 {
  width: 280px; height: 280px;
  background: #86EFAC;
  top: 45%; left: 55%;
}

/* ---- Header ---- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 40px;
  background: rgba(246,251,247,0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.04em;
}

.site-nav {
  display: flex;
  gap: 28px;
}
.site-nav a {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  text-decoration: none;
  transition: color var(--transition);
}
.site-nav a:hover { color: var(--accent); }

/* ---- Back nav ---- */
.back-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 40px;
  background: rgba(246,251,247,0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.back-btn {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}
.back-btn:hover { color: var(--accent); }
.back-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.04em;
}

/* ---- Hero ---- */
.hero {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 140px 24px 80px;
  text-align: center;
}

.hero-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--highlight);
  border: 1px solid rgba(22,163,74,0.25);
  border-radius: 100px;
  padding: 5px 16px;
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text-main);
  margin-bottom: 12px;
}

.hero-title .accent {
  color: var(--accent);
}

.hero-by {
  font-size: 1rem;
  color: var(--text-main);
  margin-bottom: 14px;
  font-weight: 500;
}

.author-link {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid rgba(22,163,74,0.3);
  transition: border-color var(--transition), color var(--transition);
}
.author-link:hover {
  border-color: var(--accent);
  color: var(--accent2);
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 56px;
  line-height: 1.65;
  font-weight: 400;
}

/* ---- Navigation Grid ---- */
.nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  text-align: left;
}

.nav-grid-bottom {
  grid-template-columns: repeat(2, minmax(260px, 320px));
  justify-content: center;
  margin-top: 16px;
}

.nav-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px;
  text-decoration: none;
  color: var(--text-main);
  display: grid;
  grid-template-columns: 1fr 24px;
  grid-template-rows: auto auto;
  column-gap: 12px;
  align-items: start;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(22,163,74,0.05);
}

.nav-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 100%;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--transition);
  border-radius: 0 2px 2px 0;
}

.nav-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 32px rgba(22,163,74,0.14), 0 0 0 1px rgba(22,163,74,0.06);
  transform: translateY(-3px);
  background: var(--surface2);
}
.nav-card:hover::before { transform: scaleY(1); }

.highlight-card {
  background: var(--highlight);
  border-color: rgba(22,163,74,0.35);
}

.nav-card-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  grid-column: 1;
  grid-row: 1;
  line-height: 1.3;
}

.nav-card-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  grid-column: 1;
  grid-row: 2;
  margin-top: 4px;
  line-height: 1.5;
  font-weight: 400;
}

.nav-card-arrow {
  grid-column: 2;
  grid-row: 1;
  font-size: 1rem;
  color: var(--accent);
  opacity: 0;
  transition: opacity var(--transition), transform var(--transition);
  transform: translateX(-4px);
}
.nav-card:hover .nav-card-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ---- Sticky-note module cards (hanging from a thread) ---- */
.note-card {
  position: relative;
  overflow: visible;
  margin-top: 30px;
  background: var(--surface);
  border-color: var(--border);
  transform-origin: top center;
  animation: noteSwing 3.6s ease-in-out infinite;
  box-shadow: 0 6px 16px rgba(22,163,74,0.10), 0 2px 4px rgba(0,0,0,0.04);
}

/* thread */
.note-card::before {
  content: '';
  position: absolute;
  top: -20px;
  left: 50%;
  width: 2px;
  height: 20px;
  background: var(--border);
  transform: translateX(-50%);
  z-index: 2;
}

/* pin at top of thread */
.note-card::after {
  content: '';
  position: absolute;
  top: -25px;
  left: 50%;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--surface);
  transform: translateX(-50%);
  z-index: 3;
}

@keyframes noteSwing {
  0%, 100% { transform: rotate(-1.5deg); }
  50% { transform: rotate(1.5deg); }
}

.note-card:hover {
  animation-play-state: paused;
  transform: rotate(0deg) translateY(-4px);
  border-color: var(--accent);
  background: var(--surface2);
}

/* ---- Site footer ---- */
.site-footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 32px 24px;
  font-size: 0.82rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  font-weight: 500;
}
.site-footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

/* ==============================
   SUBPAGE LAYOUT
   ============================== */
.subpage {
  position: relative;
  z-index: 1;
  max-width: 820px;
  margin: 0 auto;
  padding: 120px 24px 80px;
}

.subpage-header {
  margin-bottom: 40px;
}

.subpage-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--highlight);
  border: 1px solid rgba(22,163,74,0.25);
  border-radius: 100px;
  padding: 4px 14px;
  margin-bottom: 16px;
}

.subpage-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-main);
  line-height: 1.1;
  margin-bottom: 12px;
}

.subpage-desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 600px;
  font-weight: 400;
}

/* ---- Accordion ---- */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.accordion-item {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition);
}

.accordion-item.open {
  border-color: var(--accent);
}

.accordion-trigger {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  text-align: left;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  transition: color var(--transition);
}
.accordion-item.open .accordion-trigger { color: var(--accent); }

.accordion-chevron {
  font-size: 0.8rem;
  transition: transform var(--transition);
  color: var(--text-muted);
  flex-shrink: 0;
}
.accordion-item.open .accordion-chevron { transform: rotate(180deg); }

.accordion-body {
  max-height: 0;
  overflow: hidden;
  padding: 0 20px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 0px solid var(--border);
  transition: max-height 0.35s cubic-bezier(0.4,0,0.2,1), padding 0.3s ease, border-top-width 0.1s ease;
}
.accordion-item.open .accordion-body {
  max-height: 2400px;
  padding: 16px 20px 20px;
  border-top: 1px solid var(--border);
}

.accordion-body ul {
  list-style: none;
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.accordion-body ul li::before {
  content: '·';
  color: var(--accent);
  font-weight: 700;
  margin-right: 8px;
}
.accordion-body h3 {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 14px 0 6px;
}
.accordion-body h3:first-child { margin-top: 12px; }
.accordion-body p { margin-top: 8px; }

/* ---- Drive cards ---- */
.drive-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.drive-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition), background var(--transition);
}
.drive-card:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 24px rgba(22,163,74,0.14);
  transform: translateY(-2px);
  background: var(--surface2);
}

.drive-card-left { display: flex; align-items: center; gap: 14px; flex: 1; }
.drive-num {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent);
  min-width: 28px;
}
.drive-label {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
}
.drive-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
  font-weight: 400;
}

.drive-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 100px;
  background: var(--highlight);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  border: 1.5px solid rgba(22,163,74,0.3);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}
.drive-btn:hover {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
}

.drive-btn-coming {
  background: var(--surface2);
  color: var(--text-muted);
  border-color: var(--border);
  cursor: default;
}
.drive-btn-coming:hover {
  background: var(--surface2);
  color: var(--text-muted);
  border-color: var(--border);
}

/* ---- Section block ---- */
.section-block {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  margin-bottom: 20px;
}
.section-block-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ---- Info box ---- */
.info-box {
  background: var(--highlight);
  border: 1.5px solid rgba(22,163,74,0.2);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-size: 0.9rem;
  color: var(--text-main);
  line-height: 1.65;
  margin-bottom: 28px;
  font-weight: 400;
}

/* ==============================
   NOTES-JUNIORS: Mid/Final choice, semester grid, course purchase
   ============================== */

/* Big Mid / Final choice cards */
.term-choice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 8px;
}
.term-choice-card {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition), background var(--transition);
}
.term-choice-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 28px rgba(22,163,74,0.15);
  transform: translateY(-3px);
  background: var(--highlight);
}
.term-choice-card.active {
  border-color: var(--accent);
  background: var(--highlight);
}
.term-choice-icon { font-size: 1.8rem; margin-bottom: 10px; }
.term-choice-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
}
.term-choice-sub {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Semester grid (shown after Mid/Final picked) */
.semester-panel { display: none; margin-top: 28px; }
.semester-panel.active { display: block; }

.semester-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.semester-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
}
.semester-card.coming-soon {
  opacity: 0.6;
}
.semester-card-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-main);
  margin-bottom: 4px;
}
.semester-card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--highlight);
  border-radius: 100px;
  padding: 2px 10px;
  margin-bottom: 12px;
}
.semester-card-tag.soon {
  color: var(--text-muted);
  background: var(--surface2);
}

.course-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.course-item:last-of-type { border-bottom: none; }
.course-name {
  font-size: 0.85rem;
  color: var(--text-main);
  font-weight: 500;
  line-height: 1.4;
}
.course-code {
  font-weight: 700;
  color: var(--accent2);
}
.course-buy-btn {
  flex-shrink: 0;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 100px;
  background: var(--highlight);
  color: var(--accent);
  text-decoration: none;
  border: 1.5px solid rgba(22,163,74,0.3);
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
}
.course-buy-btn:hover {
  background: var(--accent);
  color: #FFFFFF;
}

.buy-all-btn {
  display: block;
  text-align: center;
  margin-top: 14px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
}
.buy-all-btn:hover {
  background: var(--accent2);
  transform: translateY(-1px);
}

/* Missing course section */
.missing-course-box {
  background: var(--highlight);
  border: 1.5px dashed rgba(22,163,74,0.4);
  border-radius: var(--radius);
  padding: 22px;
  margin-top: 24px;
  text-align: center;
}
.missing-course-box p {
  font-size: 0.88rem;
  color: var(--text-main);
  margin-bottom: 12px;
}

/* Missing-course / Need-a-tutor request cards: side by side, equal height */
.request-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: stretch;
}
.request-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.request-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
@media (max-width: 640px) {
  .request-grid { grid-template-columns: 1fr; }
}

/* ---- About page ---- */
.about-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  margin-bottom: 20px;
}
.about-greeting {
  font-size: 1.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}
.about-body {
  font-size: 0.95rem;
  color: var(--text-main);
  line-height: 1.75;
  font-weight: 400;
}
.about-body p { margin-bottom: 12px; }

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 18px;
  border-radius: 100px;
  border: 1.5px solid var(--border);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-main);
  background: var(--surface2);
  transition: all var(--transition);
}
.social-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--highlight);
}

/* ---- Helpline ---- */
.help-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: border-color var(--transition), background var(--transition);
}
.help-card:hover {
  border-color: var(--accent);
  background: var(--surface2);
}
.help-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.help-value {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
}
.help-value a {
  color: var(--accent);
  text-decoration: none;
}
.help-value a:hover { text-decoration: underline; }

/* ---- Review / testimonial cards ---- */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.review-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.review-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(22,163,74,0.12);
}
.review-quote {
  font-size: 0.88rem;
  color: var(--text-main);
  line-height: 1.6;
  margin-bottom: 16px;
}
.review-person {
  display: flex;
  align-items: center;
  gap: 10px;
}
.review-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--highlight);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-family: var(--font-display);
  flex-shrink: 0;
}
.review-name {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-main);
}
.review-batch {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ---- Cloud badges (Previous Questions page) ---- */
.cloud-groups {
  display: flex;
  flex-direction: column;
  gap: 26px;
}
.cloud-row-label {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.cloud-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.cloud-shape {
  position: relative;
  width: 130px;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: 50px;
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
}
.cloud-shape::before,
.cloud-shape::after {
  content: '';
  position: absolute;
  background: inherit;
  border: 1.5px solid var(--border);
  border-radius: 50%;
  transition: border-color var(--transition);
}
.cloud-shape::before {
  width: 52px; height: 52px;
  top: -22px; left: 18px;
}
.cloud-shape::after {
  width: 40px; height: 40px;
  top: -16px; right: 20px;
}
.cloud-shape:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  background: var(--highlight);
}
.cloud-shape:hover::before,
.cloud-shape:hover::after {
  border-color: var(--accent);
}
.cloud-label {
  position: relative;
  z-index: 2;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--text-main);
  text-transform: capitalize;
}

/* ---- Animations ---- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeOutPage {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-10px); }
}
body.page-exit {
  animation: fadeOutPage 0.35s cubic-bezier(0.4,0,0.2,1) forwards;
}

/* ---- Divider ---- */
.divider {
  height: 1px;
  background: var(--border);
  margin: 28px 0;
}

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .site-header, .back-nav { padding: 14px 18px; }
  .hero { padding: 110px 16px 60px; }
  .subpage { padding: 100px 16px 60px; }
  .nav-grid { grid-template-columns: 1fr; }
  .nav-grid-bottom { grid-template-columns: 1fr; }
  .drive-card { flex-direction: column; align-items: flex-start; }
  .help-card { flex-direction: column; align-items: flex-start; }
  .about-card { padding: 24px 18px; }
  .cloud-shape { width: 110px; height: 78px; }
  .term-choice-grid { grid-template-columns: 1fr; }
  .course-item { flex-direction: column; align-items: flex-start; gap: 6px; }
}