:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --surface-soft: #eef4ff;
  --text: #101828;
  --ink: #101828;
  --dark: #101828;
  --dark-2: #18233a;
  --muted: #667085;
  --line: #e4e7ec;
  --primary: #2454ff;
  --primary-dark: #173cc8;
  --primary-soft: #e9efff;
  --success: #0f8f5f;
  --success-soft: #e8f8f0;
  --warning: #b86b00;
  --warning-soft: #fff4df;
  --danger: #c33a2c;
  --danger-soft: #ffecea;
  --shadow: 0 24px 70px rgba(16, 24, 40, 0.10);
  --shadow-soft: 0 10px 30px rgba(16, 24, 40, 0.07);
  --radius-xl: 32px;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background:
    radial-gradient(circle at 8% 2%, rgba(36,84,255,.13), transparent 30rem),
    radial-gradient(circle at 90% 0%, rgba(15,143,95,.10), transparent 24rem),
    linear-gradient(180deg, #f9fbff 0%, var(--bg) 45%, #f7f9fc 100%);
  color: var(--text);
}
body.no-scroll { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img, video { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }

.container { width: min(1200px, calc(100% - 32px)); margin: 0 auto; }
.page { padding: 34px 0 58px; }
.stack { display: grid; gap: 18px; }
.compact-stack { gap: 10px; }
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  background: var(--text);
  color: white;
  padding: 10px 14px;
  border-radius: 10px;
  z-index: 1000;
}
.skip-link:focus { top: 16px; }

.hero {
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  align-items: center;
  gap: 48px;
  padding: 68px 0 38px;
}
.landing-hero { min-height: calc(100vh - 96px); }
.hero-copy { max-width: 690px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  width: max-content;
  gap: 8px;
  color: var(--primary-dark);
  background: var(--primary-soft);
  border: 1px solid rgba(36, 84, 255, 0.14);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: .78rem;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 850;
}
.eyebrow.compact { padding: 6px 9px; font-size: .72rem; }
h1, h2, h3, h4 { margin: 0; line-height: 1.06; letter-spacing: -0.035em; }
h1 { font-size: clamp(2.45rem, 6.8vw, 5.2rem); }
h2 { font-size: clamp(1.75rem, 3.8vw, 3rem); }
h3 { font-size: 1.22rem; }
p { color: var(--muted); line-height: 1.62; margin: 0; }
.lead { font-size: 1.06rem; max-width: 58ch; }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
  margin-bottom: 22px;
}
.clean-head { margin-bottom: 18px; }
.section-head p { max-width: 52ch; }

.card {
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(228, 231, 236, .96);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  padding: 22px;
  backdrop-filter: blur(16px);
}
.card-lg { padding: 30px; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.glass { background: rgba(255,255,255,.70); border-color: rgba(255,255,255,.70); backdrop-filter: blur(20px); }

.hero-visual { position: relative; min-height: 490px; }
.hero-panel {
  position: absolute;
  inset: 0;
  border-radius: 34px;
  padding: 26px;
  background: linear-gradient(145deg, rgba(255,255,255,.96), rgba(232,239,255,.95));
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero-panel:before {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(36,84,255,.12);
  right: -80px;
  top: -80px;
}
.app-preview { display: grid; align-content: center; gap: 18px; }
.preview-top, .preview-card, .demo-panel { position: relative; z-index: 1; }
.preview-top { display: flex; align-items: start; justify-content: space-between; gap: 16px; }
.preview-grid { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.mini-stat, .preview-card, .demo-panel {
  border: 1px solid rgba(228,231,236,.88);
  border-radius: 20px;
  background: rgba(255,255,255,.82);
  padding: 16px;
}
.mini-stat strong { display: block; font-size: 2rem; letter-spacing: -.05em; }
.mini-stat span, .preview-card span, .demo-panel p { color: var(--muted); font-size: .9rem; }
.muted-card { background: rgba(248,250,252,.88); }
.sync-dots { display: flex; gap: 7px; }
.sync-dots i { width: 9px; height: 9px; border-radius: 99px; background: var(--primary); animation: pulseDot 1.2s infinite ease-in-out; }
.sync-dots i:nth-child(2) { animation-delay: .14s; }
.sync-dots i:nth-child(3) { animation-delay: .28s; }
@keyframes pulseDot { 0%,100% { opacity: .25; transform: scale(.78); } 50% { opacity: 1; transform: scale(1); } }

.feature-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.feature-tile {
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px;
  background: rgba(255,255,255,.82);
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: 18px;
}
.feature-tile span { color: var(--primary); font-weight: 900; font-size: .82rem; }
.feature-tile strong { font-size: 1.08rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 13px;
  border: 1px solid transparent;
  background: var(--surface);
  color: var(--text);
  font-weight: 820;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-soft); }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { border-color: var(--line); background: rgba(255,255,255,.78); }
.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-soft { background: var(--primary-soft); color: var(--primary-dark); }
.btn-small { min-height: 34px; padding: 7px 11px; border-radius: 10px; font-size: .88rem; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

.form { display: grid; gap: 16px; }
.field { display: grid; gap: 8px; }
.field span, .field label { font-size: .9rem; font-weight: 820; color: #344054; }
.input, input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.95);
  border-radius: 13px;
  padding: 12px 13px;
  color: var(--text);
  outline: none;
  transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
textarea { min-height: 118px; resize: vertical; }
.input:focus, input:focus, textarea:focus, select:focus {
  border-color: rgba(36, 84, 255, .62);
  box-shadow: 0 0 0 4px rgba(36, 84, 255, .10);
  background: white;
}
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.form-actions { border-top: 1px solid var(--line); padding-top: 16px; }
.help { font-size: .84rem; color: var(--muted); }

.auth-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.auth-card { width: min(500px, 100%); }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 950; letter-spacing: -0.04em; }
.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, var(--primary), #7f9aff);
  color: white;
  box-shadow: 0 12px 24px rgba(36,84,255,.25);
}

.empty {
  padding: 28px;
  text-align: center;
  border: 1px dashed var(--line);
  border-radius: 18px;
  background: rgba(255,255,255,.72);
}
.empty p { margin-top: 6px; }
.kbd {
  border: 1px solid var(--line);
  background: white;
  padding: 3px 8px;
  border-radius: 8px;
  font-size: .84rem;
  color: var(--muted);
}
.skeleton-card { min-height: 98px; display: grid; place-items: center; color: var(--muted); }

@media (max-width: 1040px) {
  .hero, .grid-2, .grid-3, .grid-4, .feature-strip { grid-template-columns: 1fr; }
  .landing-hero { min-height: auto; }
  .hero-visual { min-height: 430px; }
  .section-head { align-items: start; flex-direction: column; }
}
@media (max-width: 620px) {
  .container { width: min(100% - 22px, 1180px); }
  .page { padding-top: 22px; }
  .form-grid, .preview-grid { grid-template-columns: 1fr; }
  .card { padding: 18px; }
  .hero { padding-top: 34px; }
  .hero-panel { padding: 20px; border-radius: 26px; }
}

/* Role-specific auth polish */
.auth-page {
  background:
    radial-gradient(circle at 15% 8%, rgba(36,84,255,.14), transparent 26rem),
    radial-gradient(circle at 90% 82%, rgba(15,143,95,.10), transparent 24rem),
    linear-gradient(180deg, #f9fbff 0%, #eef3fb 100%);
}
.role-auth-shell { align-items: center; }
.auth-layout {
  width: min(980px, 100%);
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 18px;
  align-items: stretch;
}
.auth-brand-card {
  min-height: 520px;
  display: grid;
  align-content: space-between;
  overflow: hidden;
  position: relative;
  color: #fff;
  background:
    radial-gradient(circle at top right, rgba(255,255,255,.20), transparent 26%),
    linear-gradient(145deg, #101828, #17233a);
}
.auth-brand-card:before {
  content: "";
  position: absolute;
  inset: auto -70px -100px auto;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255,255,255,.10);
}
.auth-brand-card > * { position: relative; z-index: 1; }
.auth-brand-card .logo, .auth-brand-card p { color: rgba(255,255,255,.82); }
.auth-brand-card .logo-mark { background: rgba(255,255,255,.12); box-shadow: none; }
.auth-brand-card h1 { font-size: clamp(2.1rem, 5vw, 4rem); }
.auth-brand-card .eyebrow { color: #fff; background: rgba(255,255,255,.10); border-color: rgba(255,255,255,.14); }
.role-symbol {
  width: 92px;
  height: 92px;
  display: grid;
  place-items: center;
  border-radius: 30px;
  color: #fff;
  font-size: 2.8rem;
  font-weight: 950;
  letter-spacing: -.08em;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.14);
}
.role-student { --role-accent: #2454ff; --role-soft: #e9efff; }
.role-instructor { --role-accent: #0f8f5f; --role-soft: #e8f8f0; }
.role-admin { --role-accent: #7c3aed; --role-soft: #f1eaff; }
.role-student .btn-primary, .role-student .logo-mark { background: var(--role-accent); }
.role-instructor .btn-primary, .role-instructor .logo-mark { background: var(--role-accent); }
.role-admin .btn-primary, .role-admin .logo-mark { background: var(--role-accent); }
.role-student .eyebrow, .role-instructor .eyebrow, .role-admin .eyebrow {
  color: var(--role-accent);
  background: var(--role-soft);
  border-color: color-mix(in srgb, var(--role-accent) 18%, transparent);
}
.auth-brand-card .eyebrow { color: #fff; background: rgba(255,255,255,.10); }
.auth-card h2 { font-size: clamp(1.8rem, 3.5vw, 2.7rem); }
.clean-auth { align-content: center; }
.auth-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: .92rem;
}
.auth-foot a { color: var(--primary-dark); font-weight: 850; }
.auth-role-links { display: flex; flex-wrap: wrap; gap: 8px; }
.auth-role-links a {
  padding: 8px 10px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  background: rgba(255,255,255,.08);
  color: rgba(255,255,255,.86);
  font-size: .82rem;
  font-weight: 850;
}
.auth-choice { width: min(760px, 100%); }
.auth-choice h1 { font-size: clamp(2rem, 5vw, 3.6rem); }
.role-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.role-card {
  min-height: 128px;
  display: grid;
  align-content: end;
  gap: 6px;
  padding: 18px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(255,255,255,.96), var(--role-soft, #f8fafc));
  box-shadow: var(--shadow-soft);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.role-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--role-accent) 28%, var(--line)); }
.role-card strong { font-size: 1.12rem; letter-spacing: -.03em; }
.role-card span { color: var(--muted); font-size: .88rem; }
.dashboard-page .pro-hero { background: linear-gradient(135deg, rgba(255,255,255,.98), var(--role-soft, #eef4ff)); }
.dashboard-page .pro-hero:before { background: color-mix(in srgb, var(--role-accent, #2454ff) 14%, transparent); }
.dashboard-page .btn-primary { background: var(--role-accent, var(--primary)); }
.dashboard-page .eyebrow { color: var(--role-accent, var(--primary-dark)); background: var(--role-soft, var(--primary-soft)); }
.dashboard-page .lead { font-size: 1rem; }
.dashboard-page h1 { font-size: clamp(1.9rem, 4vw, 3.3rem); }

@media (max-width: 820px) {
  .auth-layout { grid-template-columns: 1fr; }
  .auth-brand-card { min-height: 300px; }
  .role-card-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .auth-shell { padding: 14px; }
  .card-lg { padding: 22px; }
  .auth-brand-card { min-height: 260px; }
  .role-symbol { width: 72px; height: 72px; font-size: 2.1rem; border-radius: 22px; }
}

/* Premium landing page */
.home-page {
  background:
    radial-gradient(circle at 14% 12%, rgba(51,92,255,.16), transparent 28%),
    radial-gradient(circle at 86% 8%, rgba(15,143,95,.14), transparent 26%),
    linear-gradient(180deg, #f7f9ff 0%, #ffffff 50%, #f8fafc 100%);
  color: var(--ink);
}
.home-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 54px;
  min-height: 680px;
  display: grid;
  align-items: center;
}
.home-glow {
  position: absolute;
  border-radius: 999px;
  filter: blur(6px);
  pointer-events: none;
  opacity: .8;
}
.home-glow-one {
  width: 340px;
  height: 340px;
  left: -120px;
  top: 120px;
  background: rgba(51,92,255,.15);
}
.home-glow-two {
  width: 420px;
  height: 420px;
  right: -160px;
  bottom: -80px;
  background: rgba(124,58,237,.12);
}
.home-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  gap: clamp(32px, 6vw, 86px);
  align-items: center;
}
.home-copy {
  display: grid;
  gap: 22px;
  max-width: 680px;
}
.home-copy h1 {
  margin: 0;
  max-width: 680px;
  font-size: clamp(3rem, 7.2vw, 6.8rem);
  line-height: .88;
  letter-spacing: -.08em;
  color: #111827;
}
.home-copy .lead {
  max-width: 540px;
  font-size: clamp(1rem, 1.7vw, 1.24rem);
  color: var(--muted);
}
.home-actions,
.role-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.home-actions .btn,
.role-actions .btn {
  min-height: 46px;
}
.home-trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}
.home-trust-row span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 12px;
  border: 1px solid rgba(15,23,42,.08);
  background: rgba(255,255,255,.72);
  border-radius: 999px;
  color: #475569;
  font-size: .88rem;
  font-weight: 800;
  box-shadow: 0 12px 30px rgba(15,23,42,.06);
}
.home-trust-row span:before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--primary);
}
.home-preview {
  position: relative;
  min-height: 510px;
  display: grid;
  place-items: center;
}
.preview-card {
  width: min(440px, 100%);
  border: 1px solid rgba(255,255,255,.72);
  background: rgba(255,255,255,.86);
  border-radius: 34px;
  box-shadow: 0 34px 90px rgba(15,23,42,.16);
  backdrop-filter: blur(18px);
}
.main-preview-card { padding: 22px; }
.preview-topbar,
.preview-list div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.preview-topbar strong { display: block; font-size: 1rem; }
.preview-topbar span:not(.badge) { color: var(--muted); font-size: .82rem; }
.preview-chart {
  height: 210px;
  display: flex;
  align-items: end;
  gap: 12px;
  padding: 28px 0 20px;
}
.preview-chart span {
  flex: 1;
  min-width: 24px;
  border-radius: 999px 999px 10px 10px;
  background: linear-gradient(180deg, #335cff, #9db2ff);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.42);
}
.preview-chart span:nth-child(2n) { background: linear-gradient(180deg, #0f8f5f, #9ee9c4); }
.preview-chart span:nth-child(3n) { background: linear-gradient(180deg, #7c3aed, #c5b4ff); }
.preview-list {
  display: grid;
  gap: 10px;
}
.preview-list div {
  padding: 13px 14px;
  border-radius: 18px;
  background: #f8fafc;
  border: 1px solid rgba(15,23,42,.06);
}
.preview-list p {
  margin: 0;
  flex: 1;
  color: #334155;
  font-weight: 800;
}
.preview-list strong { font-size: .9rem; }
.dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  flex: none;
}
.dot-blue { background: #335cff; }
.dot-green { background: #0f8f5f; }
.dot-purple { background: #7c3aed; }
.floating-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,.7);
  background: rgba(255,255,255,.88);
  box-shadow: 0 24px 60px rgba(15,23,42,.13);
  backdrop-filter: blur(18px);
}
.floating-card strong,
.floating-card small { display: block; }
.floating-card small { color: var(--muted); font-weight: 700; }
.floating-card-one { left: -18px; top: 78px; }
.floating-card-two { right: -12px; bottom: 80px; }
.mini-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  color: #fff;
  background: var(--primary);
  font-weight: 950;
}
.home-section {
  padding: 42px 0;
}
.home-section .section-head p {
  color: var(--muted);
  margin: 0;
  max-width: 360px;
}
.home-role-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.home-role-card {
  position: relative;
  overflow: hidden;
  min-height: 270px;
  padding: 24px;
  display: grid;
  align-content: space-between;
  gap: 20px;
  border: 1px solid var(--line);
  border-radius: 30px;
  background: linear-gradient(145deg, rgba(255,255,255,.96), var(--role-soft, #f8fafc));
  box-shadow: var(--shadow-soft);
}
.home-role-card:before {
  content: '';
  position: absolute;
  width: 160px;
  height: 160px;
  right: -60px;
  top: -60px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--role-accent) 18%, transparent);
}
.role-icon {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border-radius: 20px;
  color: #fff;
  background: var(--role-accent, var(--primary));
  font-size: 1.3rem;
  font-weight: 950;
  box-shadow: 0 16px 38px color-mix(in srgb, var(--role-accent) 26%, transparent);
}
.home-role-card h3 {
  margin: 0 0 6px;
  font-size: 1.5rem;
  letter-spacing: -.04em;
}
.home-role-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}
.home-role-card .btn-primary { background: var(--role-accent, var(--primary)); }
.text-link {
  color: var(--role-accent, var(--primary-dark));
  font-weight: 900;
}
.home-features-wrap {
  display: grid;
  grid-template-columns: 1.2fr .8fr .8fr;
  gap: 18px;
}
.feature-tile {
  min-height: 230px;
  padding: 24px;
  border-radius: 30px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  display: grid;
  align-content: end;
  gap: 10px;
}
.feature-tile-primary {
  color: #fff;
  background:
    radial-gradient(circle at 15% 10%, rgba(255,255,255,.22), transparent 26%),
    linear-gradient(135deg, #172554, #335cff 55%, #7c3aed);
  border-color: transparent;
}
.feature-tile-primary .eyebrow { color: #fff; background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.16); }
.feature-tile h2,
.feature-tile h3 {
  margin: 0;
  letter-spacing: -.04em;
}
.feature-tile h2 { font-size: clamp(1.9rem, 4vw, 3.4rem); line-height: 1; }
.feature-tile h3 { font-size: 1.35rem; }
.feature-tile p { margin: 0; color: inherit; opacity: .78; line-height: 1.55; }
.feature-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 17px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-weight: 950;
  font-size: 1.2rem;
}
.home-cta-panel {
  margin-top: 36px;
  margin-bottom: 56px;
  padding: clamp(24px, 5vw, 42px);
  border-radius: 34px;
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(15,23,42,.08);
  box-shadow: var(--shadow-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}
.home-cta-panel h2 {
  margin: 8px 0 0;
  font-size: clamp(1.7rem, 4vw, 3rem);
  letter-spacing: -.05em;
}

@media (max-width: 980px) {
  .home-hero { min-height: auto; padding-top: 24px; }
  .home-hero-grid,
  .home-features-wrap { grid-template-columns: 1fr; }
  .home-preview { min-height: 430px; }
  .floating-card-one { left: 8px; }
  .floating-card-two { right: 8px; }
  .home-role-grid { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .home-hero { padding-bottom: 28px; }
  .home-copy h1 { font-size: clamp(2.65rem, 17vw, 4.4rem); }
  .home-preview { min-height: 360px; }
  .main-preview-card { padding: 18px; }
  .preview-chart { height: 160px; gap: 8px; }
  .floating-card { position: static; width: 100%; margin-top: 12px; }
  .home-preview { display: block; }
  .home-cta-panel { align-items: stretch; flex-direction: column; }
  .home-actions .btn,
  .role-actions .btn { width: 100%; justify-content: center; }
}