/* ============ ROOT ============ */
:root {
  --bg: #eef4fb;
  --bg-soft: #f7f9fc;
  --panel: #ffffff;
  --panel-2: #f1f5f9;
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.12);
  --text: #0f172a;
  --text-dim: #475569;
  --text-faint: #64748b;
  --blue: #4f7cff;
  --violet: #8b5cf6;
  --cyan: #22d3ee;
  --green: #34d399;
  --amber: #fbbf24;
  --red: #f87171;
  --header-bg: rgba(255, 255, 255, 0.92);
  --grad-primary: linear-gradient(
    135deg,
    #4f7cff 0%,
    #8b5cf6 55%,
    #22d3ee 100%
  );
  --grad-soft: linear-gradient(
    135deg,
    rgba(79, 124, 255, 0.1),
    rgba(139, 92, 246, 0.08)
  );
  --shadow-glow: 0 0 60px -10px rgba(79, 124, 255, 0.15);
  --radius: 20px;
  --radius-sm: 12px;
  --container: 1180px;
}

html.dark {
  --bg: #060814;
  --bg-soft: #0a0c16;
  --panel: #0d1127;
  --panel-2: #161a36;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);
  --text: #ffffff;
  --text-dim: #94a3b8;
  --text-faint: #64748b;
  --header-bg: rgba(6, 8, 20, 0.92);
  --grad-soft: linear-gradient(
    135deg,
    rgba(79, 124, 255, 0.15),
    rgba(139, 92, 246, 0.1)
  );
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  max-width: 100%;
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
  overflow-x: hidden;
  max-width: 100%;
}
img,
svg {
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
.container {
  width: 92%;
  max-width: var(--container);
  margin: 0 auto;
}
.mono {
  font-family: "JetBrains Mono", monospace;
}
.display {
  font-family: "Space Grotesk", sans-serif;
}

/* background ambient glow */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background:
    radial-gradient(
      circle at 20% 10%,
      rgba(79, 124, 255, 0.08),
      transparent 60%
    ),
    radial-gradient(
      circle at 80% 50%,
      rgba(139, 92, 246, 0.06),
      transparent 60%
    );
  pointer-events: none;
  z-index: 0;
}

/* ============ TYPE SCALE ============ */
h1,
h2,
h3,
h4 {
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: -0.02em;
  color: var(--text);
}
.eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
}

/* ============ NAV ============ */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--header-bg);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 0;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}
.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 4px 18px rgba(79, 124, 255, 0.45);
}
.nav-links {
  display: flex;
  gap: 2.2rem;
  align-items: center;
}
.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--text);
}
.nav-cta {
  display: flex;
  gap: 0.7rem;
  align-items: center;
}
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.85rem 1.7rem;
  border-radius: 11px;
  font-weight: 600;
  font-size: 0.92rem;
  font-family: "Inter", sans-serif;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1),
    box-shadow 0.25s,
    background 0.25s,
    border-color 0.25s,
    color 0.25s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: 0 8px 28px -8px rgba(79, 124, 255, 0.28);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px -8px rgba(79, 124, 255, 0.4);
}
.btn-ghost {
  background: rgba(15, 23, 42, 0.04);
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover {
  background: rgba(15, 23, 42, 0.08);
  border-color: rgba(15, 23, 42, 0.18);
}
.btn-sm {
  padding: 0.6rem 1.25rem;
  font-size: 0.85rem;
}
.btn-block {
  width: 100%;
}

/* ============ SECTION HEADERS ============ */
.section {
  padding: 6.5rem 0;
  position: relative;
  z-index: 1;
}
.section-head {
  max-width: 640px;
  margin: 0 auto 3.5rem;
  text-align: center;
}
.section-head h2 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 700;
  margin: 1rem 0 0.9rem;
  line-height: 1.2;
}
.section-head p {
  color: var(--text-dim);
  font-size: 1.05rem;
}
.section-head.left {
  margin: 0 0 3rem;
  text-align: left;
}

/* ============ HERO ============ */
.hero {
  padding: 5.5rem 0 4rem;
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 4rem;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: rgba(79, 124, 255, 0.08);
  border: 1px solid rgba(79, 124, 255, 0.25);
  border-radius: 100px;
  padding: 0.45rem 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: #a8bcff;
  margin-bottom: 1.6rem;
}
.hero-badge .pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.55);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(52, 211, 153, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0);
  }
}
.hero h1 {
  font-size: clamp(2.4rem, 5.2vw, 4.1rem);
  font-weight: 800;
  line-height: 1.08;
  margin-bottom: 1.4rem;
}
.hero h1 .grad {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p.lead {
  font-size: 1.12rem;
  color: var(--text-dim);
  max-width: 520px;
  margin-bottom: 2.2rem;
}
.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.4rem;
}
.hero-meta {
  display: flex;
  gap: 2.2rem;
  flex-wrap: wrap;
  padding-top: 1.6rem;
  border-top: 1px solid var(--border);
}
.hero-meta div strong {
  display: block;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
}
.hero-meta div span {
  font-size: 0.78rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

/* ===== Hero Dashboard Mockup ===== */
.dash-wrap {
  position: relative;
}
.dash-card {
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 22px;
  padding: 1.5rem;
  box-shadow:
    0 20px 40px -12px rgba(15, 23, 42, 0.08),
    var(--shadow-glow);
  position: relative;
  overflow: hidden;
}
.dash-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 85% 0%,
    rgba(79, 124, 255, 0.08),
    transparent 55%
  );
  pointer-events: none;
}
.dash-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.4rem;
}
.dash-top .who {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.dash-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: #fff;
}
.dash-top .who div strong {
  display: block;
  font-size: 0.92rem;
  font-weight: 700;
}
.dash-top .who div span {
  font-size: 0.74rem;
  color: var(--text-faint);
}
.dash-status {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(52, 211, 153, 0.12);
  color: var(--green);
  border: 1px solid rgba(52, 211, 153, 0.25);
  padding: 0.3rem 0.65rem;
  border-radius: 100px;
}

/* readiness gauge */
.gauge-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.6rem;
  align-items: center;
  background: rgba(15, 23, 42, 0.02);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.2rem;
  margin-bottom: 1rem;
}
.gauge {
  position: relative;
  width: 96px;
  height: 96px;
  flex-shrink: 0;
}
.gauge svg {
  transform: rotate(-90deg);
}
.gauge-track {
  stroke: rgba(15, 23, 42, 0.08);
}
.gauge-fill {
  stroke: url(#gaugeGrad);
  stroke-linecap: round;
  stroke-dasharray: 251;
  stroke-dashoffset: 80;
  animation: gaugeIn 1.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}
@keyframes gaugeIn {
  from {
    stroke-dashoffset: 251;
  }
}
.gauge-label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.gauge-label strong {
  font-family: "JetBrains Mono", monospace;
  font-size: 1.3rem;
  font-weight: 700;
}
.gauge-label span {
  font-size: 0.6rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.gauge-info h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}
.gauge-info p {
  font-size: 0.8rem;
  color: var(--text-dim);
}
.gauge-stats {
  display: flex;
  gap: 1.4rem;
  margin-top: 0.7rem;
}
.gauge-stats div {
  display: flex;
  flex-direction: column;
}
.gauge-stats strong {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.95rem;
  color: var(--cyan);
}
.gauge-stats span {
  font-size: 0.68rem;
  color: var(--text-faint);
}

/* subject progress grid */
.subj-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  margin-bottom: 1rem;
}
.subj-pill {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.75rem 0.9rem;
}
.subj-pill .top {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  margin-bottom: 0.5rem;
}
.subj-pill .top span:first-child {
  font-weight: 600;
  color: var(--text);
}
.subj-pill .top span:last-child {
  font-family: "JetBrains Mono", monospace;
  color: var(--text-dim);
}
.bar {
  height: 5px;
  border-radius: 4px;
  background: rgba(15, 23, 42, 0.07);
  overflow: hidden;
}
.bar i {
  display: block;
  height: 100%;
  border-radius: 4px;
}

/* AI rec box */
.ai-box {
  background: var(--grad-soft);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: 14px;
  padding: 1rem 1.1rem;
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
}
.ai-box .ic {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  flex-shrink: 0;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}
.ai-box p {
  font-size: 0.82rem;
  color: var(--text-dim);
}
.ai-box strong {
  color: var(--text);
}

/* floating elements around dashboard */
.float-chip {
  position: absolute;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 0.6rem 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  font-weight: 600;
  box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.12);
  animation: floaty 6s ease-in-out infinite;
  z-index: 3;
}
.float-chip span.num {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.95rem;
}
.fc1 {
  top: -22px;
  left: -30px;
  animation-delay: 0s;
  color: var(--cyan);
}
.fc2 {
  bottom: 30px;
  right: -36px;
  animation-delay: 1.2s;
  color: var(--green);
}
@keyframes floaty {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}
@media (max-width: 1100px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .float-chip {
    display: none;
  }
  .dash-card {
    max-width: 520px;
    margin: 0 auto;
  }
}

/* ============ TRUST BAR ============ */
.trust-bar {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 2.6rem 0;
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.trust-item {
  text-align: center;
  padding: 1rem;
}
.trust-item strong {
  display: block;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.9rem;
  font-weight: 800;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.25rem;
}
.trust-item span {
  font-size: 0.85rem;
  color: var(--text-dim);
  font-weight: 500;
}
@media (max-width: 768px) {
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============ BENTO FEATURES ============ */
.bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(3, minmax(160px, auto));
  gap: 1.1rem;
}
.bcard {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  position: relative;
  overflow: hidden;
  transition:
    transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1),
    border-color 0.3s,
    box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}
.bcard:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: 0 20px 50px -20px rgba(79, 124, 255, 0.3);
}
.bcard .b-icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 1.1rem;
}
.bcard h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.bcard p {
  font-size: 0.86rem;
  color: var(--text-dim);
}
.bcard.span2 {
  grid-column: span 2;
}
.bcard.span2row2 {
  grid-column: span 2;
  grid-row: span 2;
}
.bcard.rowtall {
  grid-row: span 2;
}

/* individual bento gradients */
.bg-1 {
  background: linear-gradient(
    135deg,
    rgba(79, 124, 255, 0.14),
    var(--panel) 60%
  );
}
.bg-1 .b-icon {
  background: rgba(79, 124, 255, 0.15);
  color: var(--blue);
}
.bg-2 .b-icon {
  background: rgba(248, 113, 113, 0.13);
  color: var(--red);
}
.bg-3 .b-icon {
  background: rgba(52, 211, 153, 0.13);
  color: var(--green);
}
.bg-4 .b-icon {
  background: rgba(34, 211, 238, 0.13);
  color: var(--cyan);
}
.bg-5 {
  background: linear-gradient(
    135deg,
    rgba(139, 92, 246, 0.12),
    var(--panel) 65%
  );
}
.bg-5 .b-icon {
  background: rgba(139, 92, 246, 0.18);
  color: var(--violet);
}
.bg-6 .b-icon {
  background: rgba(251, 191, 36, 0.13);
  color: var(--amber);
}
.bg-7 .b-icon {
  background: rgba(79, 124, 255, 0.13);
  color: var(--blue);
}
.bg-8 .b-icon {
  background: rgba(34, 211, 238, 0.13);
  color: var(--cyan);
}

/* mini visuals inside bento */
.mini-roadmap {
  display: flex;
  gap: 0.4rem;
  margin-top: auto;
  padding-top: 1rem;
}
.mini-node {
  flex: 1;
  height: 6px;
  border-radius: 4px;
  background: rgba(15, 23, 42, 0.05);
  position: relative;
  overflow: hidden;
}
.mini-node i {
  position: absolute;
  inset: 0;
  border-radius: 4px;
}
.mini-radar {
  margin-top: auto;
  padding-top: 1rem;
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
  height: 50px;
}
.mini-radar div {
  flex: 1;
  border-radius: 4px 4px 0 0;
}
.mini-gauge-sm {
  margin-top: auto;
  padding-top: 1rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.mini-gauge-sm .ring {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: conic-gradient(
    var(--green) 0deg 245deg,
    rgba(15, 23, 42, 0.06) 245deg 360deg
  );
  display: flex;
  align-items: center;
  justify-content: center;
}
.mini-gauge-sm .ring::after {
  content: "68%";
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--panel);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--green);
}
.mini-exam {
  margin-top: auto;
  padding-top: 1rem;
  background: rgba(15, 23, 42, 0.05);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.8rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  color: var(--text-dim);
}
.mini-lesson-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 1rem;
}
.mini-lesson-tags span {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 0.3rem 0.65rem;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.mini-analytics {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
  height: 55px;
  margin-top: auto;
  padding-top: 1rem;
}
.mini-analytics div {
  flex: 1;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, var(--cyan), rgba(34, 211, 238, 0.1));
}
.mini-queue {
  margin-top: auto;
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.mini-queue .row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.74rem;
  color: var(--text-dim);
}
.mini-queue .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.mini-tasks {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 1rem;
}
.mini-tasks .task {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  color: var(--text-dim);
}
.mini-tasks .check {
  width: 16px;
  height: 16px;
  border-radius: 5px;
  border: 1.5px solid var(--border-strong);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
}
.mini-tasks .check.done {
  background: var(--green);
  border-color: var(--green);
  color: #06251a;
}

@media (max-width: 1024px) {
  .bento {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto;
  }
  .bcard.span2,
  .bcard.span2row2 {
    grid-column: span 2;
  }
  .bcard.span2row2,
  .bcard.rowtall {
    grid-row: auto;
  }
}
@media (max-width: 640px) {
  .bento {
    grid-template-columns: 1fr;
  }
  .bcard.span2,
  .bcard.span2row2 {
    grid-column: span 1;
  }
}

/* ============ HOW IT WORKS ============ */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
  position: relative;
}
.step-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem 1.5rem;
  position: relative;
}
.step-num {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--cyan);
  margin-bottom: 1.4rem;
  display: block;
}
.step-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.step-card p {
  font-size: 0.85rem;
  color: var(--text-dim);
}
.step-arrow {
  position: absolute;
  top: 50%;
  right: -24px;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    rgba(79, 124, 255, 0.12),
    rgba(139, 92, 246, 0.12)
  );
  border: 1px solid rgba(79, 124, 255, 0.2);
  color: var(--blue);
  font-size: 1.2rem;
  box-shadow: 0 18px 40px -22px rgba(79, 124, 255, 0.8);
  z-index: 2;
}
@media (max-width: 900px) {
  .steps {
    grid-template-columns: 1fr;
  }
  .step-arrow {
    display: none;
  }
}

/* ============ DASHBOARD SHOWCASE ============ */
.showcase {
  background: linear-gradient(160deg, var(--panel) 0%, var(--bg-soft) 100%);
  border: 1px solid var(--border-strong);
  border-radius: 28px;
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 40px 100px -30px rgba(15, 23, 42, 0.12);
}
.showcase::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(139, 92, 246, 0.14),
    transparent 60%
  );
  pointer-events: none;
}
.showcase-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 1.3rem;
  position: relative;
  z-index: 1;
}
.sc-main {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
}
.sc-main h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sc-main h4 .tag {
  font-size: 0.68rem;
  font-family: "JetBrains Mono", monospace;
  color: var(--text-faint);
  font-weight: 500;
}
.sc-chart {
  display: flex;
  align-items: flex-end;
  gap: 0.6rem;
  height: 140px;
  margin-bottom: 0.5rem;
}
.sc-chart div {
  flex: 1;
  border-radius: 6px 6px 0 0;
  position: relative;
}
.sc-chart-labels {
  display: flex;
  gap: 0.6rem;
}
.sc-chart-labels span {
  flex: 1;
  text-align: center;
  font-size: 0.65rem;
  color: var(--text-faint);
  font-family: "JetBrains Mono", monospace;
}
.sc-side {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.sc-box {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.2rem 1.3rem;
  flex: 1;
}
.sc-box h5 {
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
}
.rank-display {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}
.rank-display strong {
  font-family: "JetBrains Mono", monospace;
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--cyan);
}
.rank-display span {
  font-size: 0.82rem;
  color: var(--text-dim);
}
.rank-trend {
  font-size: 0.78rem;
  color: var(--green);
  font-weight: 600;
}
.sc-tasklist {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.sc-task {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.82rem;
}
.sc-task .check {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  border: 1.5px solid var(--border-strong);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
}
.sc-task .check.done {
  background: var(--green);
  border-color: var(--green);
  color: #06251a;
}
.sc-task .strike {
  text-decoration: line-through;
  color: var(--text-faint);
}
@media (max-width: 900px) {
  .showcase-grid {
    grid-template-columns: 1fr;
  }
  .showcase {
    padding: 1.6rem;
    border-radius: 20px;
  }
}

/* ============ SMART LESSONS ============ */
.lesson-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.1rem;
}
.lesson-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition:
    transform 0.3s,
    border-color 0.3s;
}
.lesson-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}
.lesson-visual {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.lesson-body {
  padding: 1.2rem 1.3rem;
}
.lesson-subj {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: "JetBrains Mono", monospace;
  margin-bottom: 0.5rem;
  display: block;
}
.lesson-body h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.lesson-body p {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 0.9rem;
}
.lesson-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.74rem;
}
.xp-tag {
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  color: var(--amber);
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid rgba(251, 191, 36, 0.25);
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
}
.quiz-link {
  color: var(--text-dim);
  font-weight: 600;
}
/* lesson visuals */
.lv-bio {
  background: radial-gradient(
    circle,
    rgba(52, 211, 153, 0.18),
    transparent 70%
  );
}
.lv-bio .cell {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  border: 2px solid var(--green);
  position: relative;
}
.lv-bio .cell::before,
.lv-bio .cell::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: rgba(52, 211, 153, 0.35);
}
.lv-bio .cell::before {
  width: 20px;
  height: 20px;
  top: 18px;
  left: 18px;
}
.lv-bio .cell::after {
  width: 12px;
  height: 12px;
  bottom: 14px;
  right: 14px;
  background: rgba(52, 211, 153, 0.25);
}
.lv-phy {
  background: radial-gradient(
    circle,
    rgba(79, 124, 255, 0.18),
    transparent 70%
  );
  font-family: "JetBrains Mono", monospace;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--blue);
  text-align: center;
}
.lv-chem {
  background: radial-gradient(
    circle,
    rgba(139, 92, 246, 0.18),
    transparent 70%
  );
}
.lv-chem .flow {
  display: flex;
  gap: 0.4rem;
  align-items: center;
}
.lv-chem .node {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: var(--violet);
}
.lv-chem .ln {
  width: 18px;
  height: 2px;
  background: rgba(139, 92, 246, 0.4);
}
.lv-math {
  background: radial-gradient(
    circle,
    rgba(34, 211, 238, 0.18),
    transparent 70%
  );
}
.lv-math svg {
  width: 90px;
  height: 60px;
}
@media (max-width: 1024px) {
  .lesson-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 560px) {
  .lesson-grid {
    grid-template-columns: 1fr;
  }
}

/* ============ MOCK TEST SECTION ============ */
.mock-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2.5rem;
  align-items: center;
}
.mock-window {
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 30px 80px -20px rgba(15, 23, 42, 0.12);
}
.mock-topbar {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  padding: 0.85rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.mock-topbar .left {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.mock-pill {
  background: var(--grad-primary);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 0.25rem 0.7rem;
  border-radius: 100px;
  letter-spacing: 0.06em;
}
.mock-topbar .name {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-weight: 600;
}
.mock-timer {
  font-family: "JetBrains Mono", monospace;
  color: var(--cyan);
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.25);
  padding: 0.3rem 0.8rem;
  border-radius: 8px;
}
.mock-body {
  padding: 1.5rem;
}
.mock-q-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.6rem;
  font-family: "JetBrains Mono", monospace;
}
.mock-q-text {
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 1.1rem;
  line-height: 1.65;
}
.mock-options {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-bottom: 1.2rem;
}
.mock-opt {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}
.mock-opt .lab {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}
.mock-opt.correct {
  border-color: rgba(52, 211, 153, 0.4);
  background: rgba(52, 211, 153, 0.06);
  color: var(--text);
}
.mock-opt.correct .lab {
  background: var(--green);
  color: #06251a;
  border-color: var(--green);
}
.mock-palette {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}
.mock-dot {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-faint);
}
.mock-dot.done {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
.mock-dot.cur {
  border-color: var(--cyan);
  color: var(--cyan);
}
.mock-footer {
  border-top: 1px solid var(--border);
  padding: 0.9rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.mock-side {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.mock-side .feature {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.1rem 1.2rem;
}
.mock-side .feature .ic {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.mock-side .feature h4 {
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.mock-side .feature p {
  font-size: 0.8rem;
  color: var(--text-dim);
}
@media (max-width: 980px) {
  .mock-grid {
    grid-template-columns: 1fr;
  }
}

/* ============ TESTIMONIALS ============ */
.test-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.3rem;
}
.test-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  transition:
    transform 0.3s,
    border-color 0.3s;
}
.test-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}
.test-stars {
  color: var(--amber);
  font-size: 0.9rem;
  letter-spacing: 2px;
}
.test-quote {
  font-size: 0.92rem;
  color: var(--text-dim);
  line-height: 1.7;
}
.test-result {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.test-result span {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.3rem 0.7rem;
  border-radius: 100px;
  background: rgba(52, 211, 153, 0.1);
  color: var(--green);
  border: 1px solid rgba(52, 211, 153, 0.25);
}
.test-author {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.test-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: #fff;
  flex-shrink: 0;
}
.test-author strong {
  display: block;
  font-size: 0.88rem;
}
.test-author span {
  font-size: 0.76rem;
  color: var(--text-faint);
}
@media (max-width: 980px) {
  .test-grid {
    grid-template-columns: 1fr;
  }
}

/* ============ PRICING ============ */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
  align-items: stretch;
}
.price-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition:
    transform 0.3s,
    border-color 0.3s;
}
.price-card:hover {
  transform: translateY(-4px);
}
.price-card.featured {
  border: 1px solid rgba(139, 92, 246, 0.4);
  background: linear-gradient(
    160deg,
    rgba(79, 124, 255, 0.1),
    var(--panel) 60%
  );
  box-shadow: 0 30px 80px -20px rgba(79, 124, 255, 0.16);
  transform: scale(1.02);
}
.price-card.featured::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: var(--radius);
  background: var(--grad-primary);
  opacity: 0.35;
  filter: blur(20px);
  z-index: -1;
}
.price-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--grad-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.35rem 1.1rem;
  border-radius: 100px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  box-shadow: 0 8px 20px -5px rgba(139, 92, 246, 0.6);
}
.price-name {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.price-desc {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 1.6rem;
  min-height: 42px;
}
.price-amount {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  margin-bottom: 0.3rem;
}
.price-amount .cur {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-dim);
}
.price-amount strong {
  font-family: "JetBrains Mono", monospace;
  font-size: 2.6rem;
  font-weight: 700;
}
.price-amount .per {
  font-size: 0.85rem;
  color: var(--text-faint);
}
.price-old {
  font-size: 0.85rem;
  color: var(--text-faint);
  text-decoration: line-through;
  margin-bottom: 1.8rem;
}
.price-old.invisible {
  visibility: hidden;
}
.price-features {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin: 1.6rem 0 2rem;
  flex-grow: 1;
}
.price-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  font-size: 0.86rem;
  color: var(--text-dim);
  list-style: none;
}
.price-features .chk {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 0.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: 800;
  background: rgba(52, 211, 153, 0.12);
  color: var(--green);
}
@media (max-width: 980px) {
  .price-grid {
    grid-template-columns: 1fr;
  }
  .price-card.featured {
    transform: none;
  }
}

/* ============ FINAL CTA ============ */
.final-cta {
  text-align: center;
  background: linear-gradient(
    160deg,
    rgba(79, 124, 255, 0.12) 0%,
    rgba(139, 92, 246, 0.08) 50%,
    var(--bg-soft) 100%
  );
  border: 1px solid var(--border-strong);
  border-radius: 28px;
  padding: 5rem 2rem;
  position: relative;
  overflow: hidden;
}
.final-cta::before {
  content: "";
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(
    circle,
    rgba(139, 92, 246, 0.15),
    transparent 60%
  );
  pointer-events: none;
}
.final-cta h2 {
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
  position: relative;
}
.final-cta p {
  color: var(--text-dim);
  max-width: 520px;
  margin: 0 auto 2.2rem;
  font-size: 1.05rem;
  position: relative;
}
.final-cta .hero-ctas {
  justify-content: center;
  position: relative;
}
.final-meta {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
  position: relative;
}
.final-meta span {
  font-size: 0.8rem;
  color: var(--text-faint);
  font-weight: 500;
}

/* ============ FOOTER ============ */
footer {
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
.footer-brand p {
  color: var(--text-dim);
  font-size: 0.88rem;
  margin: 1rem 0 1.4rem;
  max-width: 280px;
}
.footer-col h5 {
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 1.1rem;
  color: var(--text);
}
.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
  transition: color 0.2s;
}
.footer-col a:hover {
  color: var(--text);
}
.social-row {
  display: flex;
  gap: 0.7rem;
}
.social-row a {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: var(--panel);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    border-color 0.2s,
    transform 0.2s;
}
.social-row a:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.6rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-faint);
}
.footer-bottom .links {
  display: flex;
  gap: 1.4rem;
}
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ============ REVEAL ANIMATION ============ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.7s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ RESPONSIVE NAV ============ */
@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    width: 100vw;
    height: calc(100vh - 64px);
    overflow-y: auto;
    background: var(--bg);
    flex-direction: column;
    justify-content: flex-start;
    padding: 2.5rem 1.5rem;
    gap: 1.6rem;
    transform: translateX(100%);
    transition: transform 0.3s ease, visibility 0.3s ease;
    z-index: 999;
    visibility: hidden;
  }
  .nav-links.active {
    transform: translateX(0);
    visibility: visible;
  }
  .nav-links a {
    font-size: 1.1rem;
  }
  .mobile-toggle {
    display: block;
  }
  .nav-cta .btn-ghost {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}

@media (max-width: 768px) {
  #how-it-works {
    display: none !important;
  }
}