/* ---------- Design tokens ---------- */
:root {
  --font-heading: 'Sora', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;

  --color-bg: #ffffff;
  --color-bg-warm: #fdf3ec;
  --color-bg-dark: #14111a;
  --color-ink: #17141c;
  --color-ink-soft: #625d6b;
  --color-border: #ece3da;

  --color-purple: #8b5cf6;
  --color-pink: #ec4899;
  --color-orange: #f97316;
  --gradient-brand: linear-gradient(135deg, #8b5cf6 0%, #ec4899 55%, #f97316 100%);

  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-full: 999px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;
  --space-8: 96px;

  --shadow-sm: 0 1px 2px rgba(23, 20, 28, 0.06);
  --shadow-md: 0 8px 24px rgba(23, 20, 28, 0.10);
  --shadow-lg: 0 24px 56px rgba(23, 20, 28, 0.20);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 180ms;
  --duration-base: 280ms;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}
html, body { overflow-x: hidden; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-bg);
  min-height: 100dvh;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 var(--space-3);
  overflow-wrap: break-word;
  hyphens: auto;
}
p { margin: 0 0 var(--space-3); color: var(--color-ink-soft); }
ul, ol { list-style: none; margin: 0; padding: 0; }

.container {
  width: 100%;
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-ink);
  color: #fff;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  z-index: 1000;
}
.skip-link:focus { left: var(--space-3); top: var(--space-3); }

:focus-visible {
  outline: 2.5px solid var(--color-purple);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-full);
  padding: 13px 24px;
  min-height: 48px;
  transition: transform var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out), background var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
}
.btn-gradient {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.btn-gradient:hover { transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.btn-gradient:active { transform: translateY(0); }

.btn-ghost-dark {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
}
.btn-ghost-dark:hover { background: rgba(255, 255, 255, 0.16); }

.btn-ghost-light {
  background: transparent;
  color: var(--color-ink);
  border: 1.5px solid var(--color-border);
}
.btn-ghost-light:hover { background: rgba(23, 20, 28, 0.04); }

.btn-outline-ink {
  background: transparent;
  color: var(--color-ink);
  border: 1.5px solid var(--color-ink);
}
.btn-outline-ink:hover { background: var(--color-ink); color: #fff; }

.btn-sm { min-height: 40px; padding: 9px 18px; font-size: 0.875rem; }
.btn-lg { min-height: 52px; padding: 15px 28px; font-size: 1rem; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 72px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-ink);
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--gradient-brand);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.main-nav { display: none; align-items: center; gap: var(--space-5); font-size: 0.95rem; font-weight: 500; }
.main-nav a { color: var(--color-ink-soft); transition: color var(--duration-fast) var(--ease-out); }
.main-nav a:hover { color: var(--color-ink); }

.header-actions { display: flex; align-items: center; gap: var(--space-3); }
.header-actions .btn-sm { display: none; }

.nav-toggle { display: flex; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; align-items: center; }
.nav-toggle span { width: 20px; height: 2px; background: var(--color-ink); border-radius: 2px; transition: transform var(--duration-base) var(--ease-out), opacity var(--duration-base) var(--ease-out); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-4) var(--space-4);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}
.mobile-nav:not([hidden]) { display: flex; }
.mobile-nav a { padding: 12px 4px; font-weight: 500; border-radius: var(--radius-sm); }
.mobile-nav a:hover { background: var(--color-bg-warm); }
.mobile-nav .btn { margin-top: var(--space-2); }

@media (min-width: 900px) {
  .main-nav { display: flex; }
  .header-actions .btn-sm { display: inline-flex; }
  .nav-toggle { display: none; }
  .mobile-nav { display: none !important; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 640px;
  display: flex;
  align-items: flex-end;
  padding-top: var(--space-8);
}
.hero-media { position: absolute; inset: 0; z-index: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20, 17, 26, 0.55) 0%, rgba(20, 17, 26, 0.75) 55%, rgba(20, 17, 26, 0.92) 100%);
}
.hero-bubble {
  position: absolute;
  top: 96px;
  right: 8%;
  z-index: 2;
  width: 92px;
  height: 92px;
  border-radius: 26px;
  overflow: hidden;
  border: 3px solid rgba(255, 255, 255, 0.85);
  box-shadow: var(--shadow-lg);
  display: none;
}
.hero-bubble img { width: 100%; height: 100%; object-fit: cover; }
.hero-bubble-dot {
  position: absolute;
  bottom: 6px;
  right: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #22c55e;
  border: 2px solid #fff;
}
@media (min-width: 760px) { .hero-bubble { display: block; } }

.hero-inner { position: relative; z-index: 1; max-width: 700px; padding-bottom: var(--space-7); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  margin: 0 0 var(--space-4);
}
.eyebrow-dark { color: #fff; background: rgba(255, 255, 255, 0.12); border: 1px solid rgba(255, 255, 255, 0.25); }

.hero-title {
  color: #fff;
  font-size: clamp(1.75rem, 5.5vw, 3.2rem);
  letter-spacing: -0.02em;
}
.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub { color: rgba(255, 255, 255, 0.8); font-size: 1.1rem; max-width: 520px; margin-bottom: var(--space-5); }
.hero-cta { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-4); }
.hero-trust { color: rgba(255, 255, 255, 0.65); font-size: 0.88rem; font-weight: 500; margin: 0; }

/* ---------- Sections ---------- */
.section { padding: var(--space-7) 0; }
.section-warm { background: var(--color-bg-warm); }
.section-title { font-size: clamp(1.6rem, 3.4vw, 2.2rem); letter-spacing: -0.01em; max-width: 760px; }
.section-sub { max-width: 560px; margin-top: calc(var(--space-3) * -1); margin-bottom: var(--space-6); }
.section > .container > .section-title { text-align: left; margin-bottom: var(--space-6); }

/* ---------- Live lesson section ---------- */
.live-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-6); align-items: center; }
.live-copy h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); }
.live-copy p { font-size: 1.05rem; max-width: 480px; }
.live-visual { position: relative; }
.live-photo { width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); aspect-ratio: 4 / 3; object-fit: cover; }
.live-card {
  position: relative;
  margin-top: calc(var(--space-4) * -1);
  margin-inline: var(--space-4);
  background: var(--color-ink);
  color: #fff;
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-lg);
}
.live-card-head { display: flex; justify-content: space-between; font-size: 0.8rem; color: rgba(255, 255, 255, 0.6); margin-bottom: var(--space-2); }
.live-card-text { margin: 0; color: #fff; font-size: 0.95rem; }
.live-card-text em { color: #f0abfc; font-style: normal; font-weight: 600; }

@media (min-width: 860px) {
  .live-grid { grid-template-columns: 1fr 1fr; }
  .live-visual { padding-bottom: var(--space-4); }
}

/* ---------- Steps + chat mock ---------- */
.steps-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-6); }
.steps-list { display: flex; flex-direction: column; gap: var(--space-5); }
.steps-list li { display: grid; grid-template-columns: 44px 1fr; gap: var(--space-3); }
.step-num {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--color-purple);
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--color-bg-warm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.steps-list h3 { font-size: 1.1rem; margin-bottom: 4px; }
.steps-list p { margin: 0; font-size: 0.95rem; }

.chat-mock {
  background: var(--color-bg-warm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.chat-mock-head { font-family: var(--font-heading); font-weight: 700; font-size: 0.9rem; color: var(--color-ink-soft); margin-bottom: var(--space-1); }
.chat-row { display: flex; align-items: flex-start; gap: var(--space-2); }
.chat-row p {
  margin: 0;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 0.92rem;
  color: var(--color-ink);
  max-width: 82%;
}
.chat-row-you { flex-direction: row-reverse; }
.chat-row-you p { background: var(--color-ink); color: #fff; border-color: var(--color-ink); }
.chat-row p em { color: var(--color-pink); font-style: normal; font-weight: 600; }
.chat-avatar {
  flex: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.chat-avatar-you { background: var(--color-ink-soft); }

@media (min-width: 860px) { .steps-grid { grid-template-columns: 1fr 1fr; align-items: start; } }

/* ---------- Feature grid ---------- */
.feature-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-4); }
@media (min-width: 620px) { .feature-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .feature-grid { grid-template-columns: repeat(4, 1fr); } }

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-4);
  transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out);
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.feature-card h3 { font-size: 1.1rem; margin-bottom: var(--space-2); }
.feature-card p { font-size: 0.92rem; margin: 0; }

.icon-tile {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-3);
  color: #fff;
}
.icon-tile svg { width: 26px; height: 26px; }
.tile-purple { background: var(--color-purple); }
.tile-pink { background: var(--color-pink); }
.tile-orange { background: var(--color-orange); }
.tile-ink { background: var(--color-ink); }

/* ---------- Plans ---------- */
.plans-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-4); }
@media (min-width: 900px) { .plans-grid { grid-template-columns: repeat(3, 1fr); align-items: stretch; } }

.plan-card {
  position: relative;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.plan-card-highlight {
  background: var(--color-ink);
  color: #fff;
  border-color: var(--color-ink);
  box-shadow: var(--shadow-lg);
}
.plan-badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: var(--gradient-brand);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}
.plan-name { font-family: var(--font-heading); font-weight: 700; font-size: 1.2rem; margin: 0; color: inherit; }
.plan-desc { font-size: 0.9rem; margin: 0; color: inherit; opacity: 0.75; }
.plan-price { font-family: var(--font-heading); font-weight: 800; font-size: 1.7rem; margin: var(--space-1) 0 var(--space-2); color: inherit; }
.plan-price span { font-size: 0.85rem; font-weight: 500; opacity: 0.7; }
.plan-card-highlight .btn-outline-ink { border-color: #fff; color: #fff; }
.plan-card-highlight .btn-outline-ink:hover { background: #fff; color: var(--color-ink); }
.plan-features { display: flex; flex-direction: column; gap: 8px; margin-top: var(--space-2); }
.plan-features li { font-size: 0.88rem; padding-left: 22px; position: relative; opacity: 0.85; }
.plan-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gradient-brand);
}

/* ---------- Testimonials ---------- */
.testimonial-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-4); }
@media (min-width: 640px) { .testimonial-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .testimonial-grid { grid-template-columns: repeat(4, 1fr); } }

.testimonial-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}
.testimonial-head { display: flex; align-items: center; gap: var(--space-2); margin-bottom: var(--space-3); }
.t-name { margin: 0; font-weight: 700; font-size: 0.92rem; color: var(--color-ink); }
.t-role { margin: 0; font-size: 0.82rem; color: var(--color-ink-soft); }
.testimonial-card p:last-child { margin: 0; font-size: 0.92rem; }

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  flex: none;
}
.avatar-1 { background: var(--color-orange); }
.avatar-2 { background: var(--color-purple); }
.avatar-3 { background: var(--color-pink); }
.avatar-4 { background: #22c55e; }

/* ---------- CTA / Subscribe ---------- */
.section-cta {
  background: var(--color-bg-dark);
  color: #fff;
  border-radius: var(--radius-lg);
  margin-inline: var(--space-3);
  padding: var(--space-7) var(--space-4);
}
@media (min-width: 700px) { .section-cta { margin-inline: var(--space-4); } }
.cta-inner { max-width: 560px; margin-inline: auto; text-align: center; }
.cta-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  color: #fff;
  box-shadow: var(--shadow-lg);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.2rem;
}
.section-cta h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); }
.cta-sub { color: #c7c2d1; font-size: 1rem; max-width: 480px; margin-inline: auto; margin-bottom: var(--space-5); }

.subscribe-form { text-align: left; }
.form-row { display: grid; grid-template-columns: 1fr; gap: var(--space-3); margin-bottom: var(--space-3); }
@media (min-width: 560px) { .form-row { grid-template-columns: 1fr 1fr; } }

.field label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; color: #e9e6ee; }
.field label .optional { font-weight: 400; color: #9791a3; }
.field input {
  width: 100%;
  min-height: 48px;
  border-radius: var(--radius-sm);
  border: 1.5px solid #362f42;
  background: #201a29;
  color: #fff;
  padding: 0 16px;
  font-size: 1rem;
  font-family: var(--font-body);
  transition: border-color var(--duration-fast) var(--ease-out);
}
.field input::placeholder { color: #756e82; }
.field input:focus-visible { outline: 2.5px solid var(--color-purple); outline-offset: 2px; }
.field input[aria-invalid="true"] { border-color: #f87171; }

.field-error { display: none; color: #fda4a4; font-size: 0.82rem; margin: 6px 0 0; }
.field-error.is-visible { display: block; }

.checkbox-field { display: flex; align-items: flex-start; gap: 10px; font-size: 0.88rem; color: #c7c2d1; margin-bottom: var(--space-4); cursor: pointer; }
.checkbox-field input { width: 20px; height: 20px; min-width: 20px; margin-top: 2px; accent-color: var(--color-pink); }
.checkbox-field a { text-decoration: underline; color: #fff; }

.subscribe-success { text-align: center; padding: var(--space-5) 0 0; }
.success-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--gradient-brand); color: #fff;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto var(--space-3);
}
.success-icon svg { width: 28px; height: 28px; }
.subscribe-success h3 { color: #fff; }
.subscribe-success p { color: #c7c2d1; max-width: 440px; margin-inline: auto; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--color-border); padding: var(--space-5) 0; }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: var(--space-3); text-align: center; }
.footer-copy { margin: 0; font-size: 0.85rem; color: var(--color-ink-soft); }
.footer-links { display: flex; gap: var(--space-4); font-size: 0.85rem; }
.footer-links a { color: var(--color-ink-soft); }
.footer-links a:hover { color: var(--color-ink); }
@media (min-width: 760px) { .footer-inner { flex-direction: row; justify-content: space-between; text-align: left; } }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }