.lp {
  --canvas: #fff;
  --surface: #f1f9fc;
  --ink: #091925;
  --muted: #647580;
  --accent: #087e88;
  --line: #d8e7ec;
  --selection: #dff5fb;
  color-scheme: light;
  background: #e3f8ff;
  font-size: 15px;
}
.lp::selection, .lp ::selection { color: var(--ink); background: #b8e9f5; }
.lp:has(.demo-dialog[open]) { overflow: hidden; }
.lp-header { position: sticky; top: 12px; z-index: 5; width: min(100% - 36px, 1060px); min-height: 48px; margin: 12px auto 0; padding: 2px 14px; display: flex; align-items: center; justify-content: space-between; gap: 16px; background: #ffffffed; border-radius: 100px; box-shadow: 0 3px 14px #23597008; transition: transform .18s cubic-bezier(.22, 1, .36, 1), opacity .14s ease-out; }
.lp-header.is-hidden { transform: translateY(calc(-100% - 24px)); opacity: 0; pointer-events: none; }
.lp-header .brand { gap: 6px; font-size: 29px; }
.lp-header .brand-mark { width: 38px; height: 38px; border-radius: 0; }
.desktop-navigation { display: flex; align-items: center; gap: 24px; font-size: 13px; }
.desktop-navigation a { color: var(--muted); text-decoration: none; }
.desktop-navigation a:hover { color: var(--accent); }
.desktop-navigation button { color: var(--ink); background: #b8f1f5; border: 0; border-radius: 100px; padding: 9px 18px; min-height: 44px; font-weight: 700; }
.mobile-navigation { display: none; }
.mobile-navigation > summary { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; list-style: none; }
.mobile-navigation[open] > summary { background: var(--selection); }
.mobile-navigation nav { position: absolute; top: calc(100% + 10px); right: 0; width: 248px; max-width: calc(100vw - 36px); padding: 12px; background: #fff; border: 1px solid var(--line); border-radius: 22px; box-shadow: 0 14px 36px #174f6814; }
.mobile-navigation nav a { display: block; padding: 11px 13px; min-height: 44px; font-size: 14px; border-radius: 10px; color: var(--ink); text-decoration: none; }
.mobile-navigation nav a:hover { background: var(--surface); }
summary::-webkit-details-marker { display: none; }
.mobile-navigation summary::marker, .more-features summary::marker, .lp-faq summary::marker { content: ''; }
.lp-page { background: #fff; }
.lp .lp-main { width: 100%; margin: 0; }
.lp-shell { width: min(100% - 48px, 860px); margin-inline: auto; }
.lp-hero { position: relative; background: #e3f8ff; text-align: center; padding: 26px 0 48px; }
.hero-shell { max-width: 680px; }
.hero-identity { display: flex; flex-direction: column; align-items: center; gap: 2px; margin-bottom: 17px; }
.hero-identity img { width: 128px; height: 128px; border-radius: 30px; }
.hero-identity > span { font-family: var(--rounded); font-size: 44px; font-weight: 900; letter-spacing: -1.8px; line-height: 1.12; }
.lp-hero h1 { font-size: clamp(28px, 3.2vw, 38px); line-height: 1.3; letter-spacing: -.055em; margin: 0 0 8px; }
.lp-hero h1 > span { display: block; }
.hero-description { max-width: 500px; font-size: 15px; color: #60707c; line-height: 1.65; margin: 0 auto 11px; }
.hero-status { display: inline-block; margin: 0; padding: 3px 15px; border-radius: 100px; color: #335b68; background: #c8eff8; font-size: 12px; font-weight: 650; line-height: 1.6; }
.hero-action { position: relative; width: fit-content; margin: 17px auto 14px; }
.hero-pointer { position: absolute; width: 32px; height: 40px; object-fit: contain; right: calc(100% + 8px); bottom: 8px; }
.lp-button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 29px; border: 0; border-radius: 100px; color: var(--ink); background: #33d9de; font-family: inherit; font-size: 16px; font-weight: 750; line-height: 1.5; text-decoration: none; transition: background .15s ease; }
.lp-button:hover { color: var(--ink); background: #22c8cf; text-decoration: none; }
.hero-preview { width: min(100%, 322px); margin: 0 auto; }
.hero-preview > img { display: block; width: 100%; height: auto; }
.hero-preview figcaption { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.lp-demos { width: min(100% - 32px, 1000px); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 24px; margin-top: 28px; scroll-margin-top: 80px; }
.interactive-demo { min-width: 0; padding: 24px 12px 14px; background: #fff; border-radius: 28px; }
.interactive-demo > h2 { font-size: 25px; letter-spacing: -.035em; line-height: 1.4; margin: 0 0 8px; }
.interactive-demo > .demo-description { color: var(--muted); font-size: 14px; line-height: 1.7; margin: 0; }
.interactive-demo .demo-start { margin: 16px auto 12px; min-height: 46px; font-size: 15px; padding-inline: 24px; }
.demo-stage { position: relative; padding: 12px 18px; overflow: hidden; isolation: isolate; border-radius: 26px; }
.interactive-demo .app-demo { width: 100%; height: 700px; border-radius: 26px; box-shadow: none; text-align: left; }
.interactive-demo .reader-scroll { padding: 24px; }
.interactive-demo .reader-prose { font-size: 18px; }
.interactive-demo .reader-word { background: transparent; text-decoration: none; }
.interactive-demo .app-close img { filter: invert(1); }
.interactive-demo .app-review .app-close img { filter: none; }
.interactive-demo .app-overlay > .app-scroll { padding: 20px; }
.interactive-demo .app-share > .app-scroll { padding-top: 8px; }
.interactive-demo .app-overlay-header { margin-bottom: 18px; }
.interactive-demo .app-review-meta { margin-bottom: 14px; }
.interactive-demo .app-review-card { min-height: 260px; padding: 22px; margin-bottom: 18px; }
.interactive-demo .app-review-card .app-word { font-size: 30px; }
.demo-review-answer > h4 { font-size: 22px; font-weight: 750; line-height: 1.3; text-align: center; margin: 20px 0 10px; }
.demo-review-answer > .app-muted { font-size: 14px; text-align: center; }
.demo-review-answer .app-example { margin-top: 18px; }
.demo-recent-heading { font-size: 17px; margin: 26px 0 16px; }
.interactive-demo .app-card-row { display: grid; }
.interactive-demo .app-complete-card { margin-top: 28px; }
.interactive-demo .app-complete-card .app-direction { margin-bottom: 24px; }
.demo-spotlight { position: absolute; z-index: 10; border: 2px solid #33d9de; box-shadow: 0 0 0 1000px #071f2c3b; pointer-events: none; }
.demo-cue { position: absolute; z-index: 11; display: grid; place-items: center; width: 28px; height: 30px; background: #33d9de; border-radius: 8px; pointer-events: none; }
.demo-cue img { transform: rotate(45deg); }
.interactive-demo > .demo-instruction { min-height: 42px; margin: 10px 12px 0; color: #49616e; font-size: 12px; line-height: 1.75; }
.interactive-demo-caption { grid-column: 1 / -1; margin: 0 8px; color: var(--muted); font-size: 11px; line-height: 1.8; }
.demo-view-enter { animation: demo-enter .32s ease-out; }
@keyframes demo-enter { from { transform: translateX(-24px); opacity: .8; } to { transform: translateX(0); opacity: 1; } }
.section-wave { position: absolute; inset: auto 0 -1px; height: 26px; background-image: url('/assets/lp-wave-final.png'); background-repeat: repeat-x; background-size: 390px auto; background-position: left -48px; pointer-events: none; }
.science-section { padding-top: 40px; padding-bottom: 20px; }
.science-heading { position: relative; width: fit-content; max-width: 100%; margin: 0 auto 8px; font-size: clamp(24px, 3vw, 30px); font-weight: 850; line-height: 1.45; letter-spacing: -.045em; text-align: center; }
.science-heading > img { position: absolute; width: 32px; height: 42px; left: -36px; top: -10px; object-fit: contain; }
.science-heading > span { display: inline-block; }
.science-highlight { color: #0099ab; box-shadow: inset 0 -.6em #dff5fb; border-radius: 12px; padding-inline: 5px; }
.science-methods { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-inline: 32px; }
.science-method { min-width: 0; }
.science-illustration { display: block; width: 100%; height: auto; aspect-ratio: 2 / 1; object-fit: contain; }
.science-method h3 { margin: 14px 40px 8px; font-size: 26px; font-weight: 800; line-height: 1.4; letter-spacing: -.035em; }
.science-lead { margin: 0 40px 9px; color: var(--accent); font-size: 17px; font-weight: 650; line-height: 1.65; }
.science-description { margin: 0 40px; color: var(--muted); font-size: 14px; line-height: 1.8; }
.primary-benefits { display: grid; gap: 24px; max-width: 620px; padding-top: 18px; padding-bottom: 38px; }
.benefit-row { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1fr); gap: 22px; align-items: center; }
.benefit-visual { position: relative; aspect-ratio: 1; overflow: hidden; border-radius: 25px; background: #edfaff; }
.benefit-visual img { display: block; width: 100%; height: 100%; object-fit: cover; }
.benefit-row h2 { font-size: clamp(22px, 2.3vw, 28px); line-height: 1.35; letter-spacing: -.035em; margin: 0 0 9px; font-weight: 800; }
.benefit-row p { font-size: 14px; line-height: 1.75; color: var(--muted); margin: 0; }
.lp-section { padding-top: 68px; padding-bottom: 64px; }
.lp-section[id] { scroll-margin-top: 80px; }
.lp-section-intro { text-align: center; margin-bottom: 36px; }
.section-kicker { margin: 0 0 12px; color: var(--accent); font-size: 13px; font-weight: 650; }
.lp-section-intro h2 { font-size: 28px; line-height: 1.6; letter-spacing: -.04em; margin: 0 0 14px; }
.lp-section-intro > p:not(.section-kicker) { font-size: 15px; color: var(--muted); line-height: 1.9; margin: 0; }
#features .lp-section-intro h2 { margin-top: 22px; }
.text-highlight { background: #daf5fb; border-radius: 8px; padding: 1px 4px 2px; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.lp-section-intro .text-highlight { display: inline-block; }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 28px; }
.feature h3 { font-size: 19px; font-weight: 750; line-height: 1.65; margin: 16px 0 8px; letter-spacing: -.025em; }
.feature > p { color: var(--muted); font-size: 14px; line-height: 1.85; margin: 0; }
.lp .feature-visual { background: #0a121c; border-color: #d0e3eb; box-shadow: 0 0 0 8px #edf9fc; }
.more-features { margin-top: 35px; text-align: center; }
.more-features > summary { display: inline-flex; align-items: center; gap: 20px; min-height: 44px; padding: 10px 24px; border: 1px solid var(--line); border-radius: 100px; background: var(--surface); color: var(--ink); font-size: 14px; }
.more-features .less-label { display: none; }
.more-features[open] .more-label { display: none; }
.more-features[open] .less-label { display: inline; }
.more-features[open] .summary-icon { transform: rotate(45deg); }
.more-features .feature-grid { margin-top: 36px; text-align: left; }
.device-showcase { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 32px; max-width: 530px; margin: 0 auto 28px; justify-items: center; }
.phone-frame { max-width: 248px; overflow: hidden; border-radius: 26px; background: #0a121c; }
.phone-frame img { display: block; width: 100%; height: auto; }
.device-showcase figcaption { grid-column: 1 / -1; font-size: 11px; color: var(--muted); text-align: center; }
.mac-showcase { width: min(100%, 440px); margin: 0 auto 28px; }
.mac-showcase img { display: block; width: 100%; height: auto; border-radius: 16px; box-shadow: 0 12px 40px #0919251a; }
.mac-showcase figcaption { margin-top: 24px; font-size: 11px; color: var(--muted); text-align: center; }
.platform-action { text-align: center; }
.platform-action p { margin: 14px 0 0; color: var(--muted); font-size: 13px; line-height: 1.9; }
.platform-action p > span { font-size: 12px; }
.language-section { text-align: center; padding-top: 68px; padding-bottom: 24px; }
.language-section h2 { font-size: 24px; }
.language-pills { display: flex; justify-content: center; gap: 12px; }
.language-pills > span { padding: 8px 24px; background: var(--surface); border-radius: 100px; font-size: 16px; }
.language-pills small { font-size: 12px; color: var(--accent); font-weight: 700; margin-right: 8px; }
.language-section p { font-size: 14px; color: var(--muted); margin: 16px 0 0; }
.lp #plans, .lp #faq { padding-top: 40px; }
.lp .plan { background: #f8fcfd; border-color: var(--line); }
.lp .pro-plan { background: #edfafd; border-color: #8ed7df; }
.lp .quota strong { color: #087e88; }
.lp .pro-badge { background: #d0f2f7; color: var(--accent); }
.lp .plan-heading .plan-status { background: #d0f2f7; }
.lp .plan-price { flex-wrap: wrap; gap: 8px 12px; }
.lp .fine-print { font-size: 12px; }
.lp-faq { border-top: 1px solid var(--line); }
.lp-faq > details { border-bottom: 1px solid var(--line); }
.lp-faq summary { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 20px 0; font-size: 15px; line-height: 1.75; font-weight: 600; }
.summary-icon { flex: 0 0 20px; }
.lp-faq .summary-icon { transition: transform .25s cubic-bezier(.4, 0, .2, 1); }
.lp-faq details[open] summary:not([aria-expanded]) .summary-icon,
.lp-faq summary[aria-expanded="true"] .summary-icon { transform: rotate(180deg); }
.lp-faq details > div { overflow: hidden; }
.lp-faq .faq-answer { padding: 0 30px 22px 0; color: var(--muted); font-size: 14px; line-height: 1.9; }
.lp-faq p { margin: 0 0 12px; }
.faq-support { display: block; text-align: center; margin-top: 24px; font-size: 14px; }
.closing-section { text-align: center; padding: 0 0 60px; }
.closing-section > img { width: 72px; height: 72px; }
.closing-section h2 { font-size: 25px; margin: 16px 0 22px; }
.closing-section > p { font-size: 13px; color: var(--muted); margin: 13px 0 0; }
.lp .draft-notice { width: 100%; padding: 13px 16px; background: var(--surface); margin: 0 0 24px; font-size: 12px; line-height: 1.7; flex-wrap: wrap; border-radius: 14px; }
.lp .draft-notice strong { font-size: 12px; }
.lp .draft-dot { background: var(--accent); }
.lp-footer { border-top: 1px solid var(--line); display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 26px; padding: 38px 0; }
.lp-footer .brand { font-size: 28px; gap: 8px; }
.lp-footer .brand-mark { width: 38px; height: 38px; border-radius: 0; }
.footer-identity > p { font-size: 12px; color: var(--muted); margin: 12px 0; }
.lp-footer nav { display: flex; flex-direction: column; gap: 12px; font-size: 13px; }
.lp-footer nav > p { margin: 0 0 4px; font-weight: 650; }
.lp-footer nav > a { color: var(--muted); text-decoration: none; }
.lp-footer nav > a:hover { color: var(--accent); }
.demo-dialog { width: min(100% - 28px, 474px); max-height: calc(100dvh - 28px); padding: 0 18px; border: 0; border-radius: 26px; background: #fff; color: var(--ink); box-shadow: 0 24px 90px #063e5630; overscroll-behavior: contain; }
.demo-dialog::backdrop { background: #09233380; }
.demo-dialog-header { position: sticky; top: 0; z-index: 4; display: flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 64px; padding: 8px 0; background: #fff; }
.demo-dialog-header h2 { font-size: 16px; margin: 0; }
.demo-dialog-header button { display: grid; place-items: center; width: 44px; height: 44px; border: 0; background: var(--surface); border-radius: 50%; }
.demo-dialog .app-demo { width: 100%; height: max(390px, min(760px, calc(100dvh - 275px))); border-radius: 25px; box-shadow: none; scroll-margin-top: 68px; }
.demo-controls { display: flex; gap: 10px; width: 100%; margin: 12px 0; }
.demo-controls button { min-height: 44px; padding: 10px; color: var(--ink); border: 1px solid var(--line); background: var(--surface); border-radius: 12px; font-size: 12px; }
.demo-controls #demo-review { color: var(--ink); background: #d4f4f7; border-color: #9bdde3; }
.demo-dialog .demo-caption { font-size: 11px; line-height: 1.7; margin: 10px 0 18px; }
@media (max-width: 899px) {
  .desktop-navigation { display: none; }
  .mobile-navigation { display: block; }
}
@media (max-width: 600px) {
  .lp-header .brand { font-size: 28px; }
  .lp-hero { padding-top: 14px; padding-bottom: 28px; }
  .hero-identity img { width: 112px; height: 112px; border-radius: 26px; }
  .hero-identity > span { font-size: 42px; line-height: 1; }
  .hero-identity { gap: 0; margin-bottom: 14px; }
  .lp-hero h1 { font-size: clamp(23px, 7.1vw, 28px); line-height: 1.15; margin-bottom: 4px; }
  .hero-description { font-size: 14px; line-height: 1.45; max-width: 350px; margin-bottom: 6px; }
  .hero-preview { width: min(100%, 304px); }
  .primary-benefits { gap: 16px; padding-top: 12px; padding-bottom: 24px; }
  .benefit-row { grid-template-columns: minmax(0, .9fr) minmax(0, 1fr); gap: 20px; }
  .benefit-visual { aspect-ratio: 1.15; border-radius: 22px; }
  .benefit-reading img { transform: scale(1.25); }
  .benefit-row h2 { font-size: clamp(19px, 5.65vw, 23px); line-height: 1.25; margin-bottom: 6px; }
  .benefit-row p { font-size: 13px; line-height: 1.6; }
  .lp-section { padding: 52px 0; }
  .lp-section-intro { margin-bottom: 30px; }
  .lp-section-intro h2 { font-size: 24px; }
  .lp-section-intro > p:not(.section-kicker) { font-size: 14px; }
  .feature-grid { grid-template-columns: 1fr; gap: 32px; }
  .feature h3 { font-size: 18px; }
  .device-showcase { gap: 16px; }
  .phone-frame { border-radius: 18px; }
  .lp .plan-grid { grid-template-columns: 1fr; }
  .lp .plan { padding: 26px; }
  .lp .plan-notes { flex-direction: column; gap: 12px; }
  .language-section { padding-top: 48px; }
  .language-section h2 { font-size: 23px; }
  .lp-faq summary { font-size: 14px; }
  .closing-section h2 { font-size: 23px; }
  .lp-footer { grid-template-columns: 1fr 1fr; gap: 24px 18px; }
  .footer-identity { grid-column: 1 / -1; }
  .demo-dialog { padding-inline: 12px; border-radius: 20px; }
  .demo-dialog .reader-scroll { padding: 20px; }
  .demo-dialog .reader-prose { font-size: 18px; }
}
@media (max-width: 767px) {
  .science-section { max-width: 440px; padding-top: 42px; padding-bottom: 8px; }
  .science-heading { margin-bottom: 28px; font-size: clamp(22px, 5.5vw, 24px); }
  .science-heading > img { width: 24px; height: 32px; left: -16px; top: -16px; }
  .science-methods { grid-template-columns: 1fr; gap: 32px; margin-inline: 0; }
  .science-method h3 { margin: 18px 0 8px; font-size: 23px; }
  .science-lead { margin-inline: 0; font-size: 16px; }
  .science-description { margin-inline: 0; }
  .lp-demos { grid-template-columns: 1fr; max-width: 450px; gap: 22px; margin-top: 24px; }
  .interactive-demo { padding-top: 22px; }
  .demo-stage { padding-inline: 10px; }
  .interactive-demo .reader-header, .interactive-demo .reader-footer { padding-inline: 18px; }
  .interactive-demo .reader-scroll { padding: 20px; }
  .interactive-demo .reader-prose { font-size: 18px; }
  .interactive-demo .app-share-header { padding-inline: 18px; }
  .interactive-demo .app-overlay > .app-scroll { padding-inline: 18px; }
  .interactive-demo .app-save-footer { padding-inline: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  .lp-header, .lp-button, .lp-faq .summary-icon { transition: none; }
  .demo-view-enter { animation: none; }
}