.lp-v4 { --v4-accent: #b56348; }
html[lang="en"] .lp-v4 .display-xl { font-size: clamp(40px, 5.4vw, 68px); line-height: 1.08; letter-spacing: -.025em; }
html[lang="en"] .lp-v4 .display-lg { line-height: 1.12; font-size: clamp(34px, 4vw, 48px); }
html[lang="en"] .lp-v4 .hero__sub { line-height: 1.7; }
html[lang="en"] .lp-v4 .v4-copy p:not(.v4-kicker) { line-height: 1.8; }
.lp-v4 .hero { padding: 72px 0 64px; }
.lp-v4 .hero__grid { grid-template-columns: 1.08fr 1fr; gap: 52px; align-items: center; }
.lp-v4 .display-xl { font-size: clamp(36px, 4.5vw, 56px); line-height: 1.5; letter-spacing: -.045em; }
.lp-v4 .display-lg { font-size: clamp(30px, 3.4vw, 42px); line-height: 1.55; letter-spacing: -.025em; }
.lp-v4 .hero__sub { max-width: 31em; font-size: 17px; line-height: 1.95; }
.lp-v4 .hero__cta-note { font-size: 14px; }
.v4-hero-art { width: min(100%, 470px); margin: 0 auto; }
.v4-hero-art img { width: 100%; height: auto; }
.v4-proof { border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.v4-proof__inner { display: flex; gap: 24px; justify-content: space-between; padding-top: 26px; padding-bottom: 26px; font-size: 15px; }
.v4-proof strong { color: var(--v4-accent); font-size: 20px; font-weight: 500; }
.v4-story { padding: 112px 0; }
.v4-story--soft { background: var(--surface-soft); }
.v4-split { display: grid; grid-template-columns: 1fr 1.1fr; gap: 72px; align-items: center; }
.v4-kicker { color: var(--v4-accent); font-size: 14px; letter-spacing: .12em; margin: 0 0 18px; font-weight: 600; }
.v4-copy p:not(.v4-kicker) { font-size: 17px; line-height: 1.95; color: var(--body); margin: 22px 0 0; }
.v4-copy .v4-detail { font-size: 14px !important; color: var(--muted) !important; }
.v4-review { background: var(--canvas); border-radius: 20px; padding: 30px 28px; }
.v4-review__label { font-size: 15px; margin: 0 0 20px; text-align: center; }
.v4-review svg { display: block; width: 100%; height: auto; }
.v4-review figcaption { margin: 20px 0 0; font-size: 13px; color: var(--muted); text-align: center; }
.v4-recall { display: flex; gap: 22px; align-items: start; justify-content: center; }
.v4-screen { margin: 0; flex: 1; max-width: 220px; min-width: 0; }
.v4-screen figcaption { text-align: center; font-size: 14px; margin-bottom: 16px; color: var(--body); }
.v4-screen img { width: 100%; height: auto; border: 5px solid #282725; border-radius: 30px; background: var(--canvas); }
.v4-tap-arrow { align-self: center; color: var(--v4-accent); font-size: 28px; }
#daily-learning .v4-copy { max-width: 760px; margin: 0 auto; text-align: center; }
.v4-tree-key { margin: 30px 0 0; }
.v4-tree-key div { padding: 18px 0; border-top: 1px solid var(--hairline); }
.v4-tree-key dt { font-size: 16px; font-weight: 600; }
.v4-tree-key dd { margin: 8px 0 0; font-size: 15px; color: var(--body); line-height: 1.8; }
.v4-tree-figure { margin: 0; }
.v4-tree-figure img { width: 100%; height: auto; }
.v4-tree-figure figcaption { font-size: 20px; line-height: 1.8; text-align: center; margin: 24px 0; }
.v4-tree-figure p { color: var(--muted); font-size: 14px; line-height: 1.9; max-width: 31em; margin: 0 auto; }
.lp-v4 .section-header__sub { font-size: 17px; line-height: 1.95; }
.lp-v4 .privacy { padding: 80px 0; }
.lp-v4 .privacy__lead { line-height: 1.95; }
.lp-v4 .faq-item__a { font-size: 16px; line-height: 1.9; }
.lp-v4 .demo-live__step-title { font-size: 17px; }
.lp-v4 .demo-live__layout { grid-template-columns: minmax(0, 360px) minmax(0, 1fr); }
.lp-v4 .demo-live__layout > * { min-width: 0; }
@media (max-width: 900px) {
  .lp-v4 .demo-live__layout { grid-template-columns: minmax(0, 1fr); }
}
.lp-v4 .demo-live__step-body { font-size: 16px; line-height: 1.8; }
.lp-v4 .demo-live__note { font-size: 14px; line-height: 1.8; color: var(--muted); }
.lp-v4 .ld__btn--dark { background: var(--primary); color: white; }
.lp-v4 .ld__phase, .lp-v4 .ld__bar { display: none; }
.lp-v4 .ld__pos { font-size: 12px; }
.lp-v4 .final-cta__title { line-height: 1.6; }
.lp-v4 .final-cta__note { font-size: 14px; line-height: 1.9; max-width: 44em; margin-left: auto; margin-right: auto; }
.lp-v4 a:focus-visible, .lp-v4 button:focus-visible { outline: 3px solid var(--v4-accent); outline-offset: 5px; }
@media (max-width: 800px) {
  .lp-v4 .hero { padding: 42px 0 48px; }
  .lp-v4 .hero__grid, .v4-split { grid-template-columns: 1fr; gap: 40px; }
  .v4-hero-art { max-width: 360px; }
  .v4-story { padding: 68px 0; }
  .v4-proof__inner { flex-wrap: wrap; justify-content: center; column-gap: 22px; row-gap: 12px; }
  .v4-review { margin: 0; padding: 24px 16px; }
  .v4-recall { gap: 14px; }
  .v4-screen img { border-width: 4px; border-radius: 24px; }
  .v4-tap-arrow { font-size: 22px; }
}
@media (max-width: 420px) {
  .lp-v4 .nav .btn { font-size: 12px; padding: 10px 12px; }
  .lp-v4 .nav__brand { gap: 5px; }
  .lp-v4 .nav__lang-btn { padding: 4px; }
  .lp-v4 .display-xl { font-size: 34px; }
  .v4-screen img { border-radius: 20px; }
}