/* Burrow — landing styles */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--c-paper); color: var(--c-charcoal);
  font-family: var(--f-text); font-size: var(--t-body); font-weight: 500; line-height: 1.47;
  -webkit-font-smoothing: antialiased; overflow-x: clip;
}
img, video, svg { display: block; max-width: 100%; }
h1, h2, h3, p, ul, dl, dd, figure { margin: 0; padding: 0; }
ul { list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--c-sky); outline-offset: 3px; border-radius: 8px; }
.skip { position: fixed; left: 16px; top: -60px; z-index: 100; padding: 10px 16px; background: var(--c-plum); color: #fff; border-radius: var(--r); }
.skip:focus { top: 12px; }
.wrap { width: 100%; max-width: calc(var(--page) + var(--gutter) * 2); margin: 0 auto; padding: 0 var(--gutter); }

/* ---- type ---- */
.display {
  font-family: var(--f-display); font-weight: 900;
  font-size: var(--t-heading); line-height: 1.12; letter-spacing: var(--tr-display);
  color: var(--c-heading);
}
.display--center { text-align: center; max-width: 18ch; margin: 0 auto; }
.story__text p, .try__text p, .cta p { margin-top: 20px; max-width: 30em; color: var(--c-pencil); font-size: var(--t-sub); line-height: 1.45; }

/* ---- buttons: sticker style with a pressed edge ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; text-align: center;
  min-height: 52px; padding: 12px 24px; border-radius: var(--r);
  font-family: var(--f-text); font-weight: 800; font-size: var(--t-sub); letter-spacing: var(--tr-caps); text-transform: uppercase;
  border: 0; transition: transform 120ms ease, box-shadow 120ms ease, background 150ms ease, filter 150ms;
}
.btn--primary { background: var(--c-accent); color: #fff; box-shadow: 0 4px 0 var(--c-accent-press); }
.btn--primary:hover { filter: brightness(1.06); }
.btn--ghost { background: #fff; color: var(--c-teal); box-shadow: inset 0 0 0 var(--border) var(--c-line), 0 4px 0 var(--c-line); }
.btn--ghost:hover { background: #f7f7f7; }
.btn:active { transform: translateY(4px); box-shadow: 0 0 0 var(--c-accent-press); }
.btn--ghost:active { box-shadow: inset 0 0 0 var(--border) var(--c-line), 0 0 0 var(--c-line); }
.btn--sm { min-height: 46px; padding: 10px 22px; font-size: 17px; }
.btn[disabled] { background: #e5e5e5; color: var(--c-faded); box-shadow: 0 4px 0 #d4d4d4; cursor: not-allowed; }
.pill {
  padding: 10px 16px; border-radius: var(--r); border: var(--border) solid var(--c-line);
  font-weight: 800; font-size: var(--t-nav); letter-spacing: var(--tr-caps); text-transform: uppercase; color: var(--c-pencil);
  transition: background 150ms, color 150ms;
}
.pill:hover { background: var(--c-cream); color: var(--c-accent); }

/* ---- nav ---- */
.nav { position: sticky; top: 0; z-index: 50; background: #fff; transition: box-shadow 200ms; }
.nav.is-stuck { box-shadow: 0 2px 0 var(--c-line); }
.nav__inner { max-width: calc(var(--page) + var(--gutter) * 2); margin: 0 auto; padding: 14px var(--gutter); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { display: flex; align-items: center; gap: 8px; }
.logo__mark { width: 40px; height: 40px; transition: transform 300ms var(--ease-bounce); }
.logo:hover .logo__mark { transform: rotate(-10deg) scale(1.1); }
.logo__word { font-family: var(--f-display); font-weight: 900; font-size: 30px; letter-spacing: -0.03em; color: var(--c-fox); }
.nav__links { display: flex; gap: 28px; font-weight: 800; font-size: var(--t-nav); letter-spacing: var(--tr-caps); text-transform: uppercase; color: var(--c-pencil); }
.nav__links a:hover { color: var(--c-teal); }
@media (max-width: 860px) { .nav__links { display: none; } }

/* ---- illustration slots (poster image now, Veo loop later) ---- */
.art { position: relative; }
.art { overflow: hidden; }
.art__media { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: #fff; scale: 1.18; }
.art--hero .art__media { scale: 1.28; }
.art.is-still .art__media { animation: bob 5s ease-in-out infinite; }
@keyframes bob { 0%, 100% { transform: translateY(0) rotate(0); } 50% { transform: translateY(-10px) rotate(-0.6deg); } }

/* ---- hero ---- */
.hero { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; min-height: calc(100svh - 72px); padding-top: 24px; padding-bottom: 48px; }
.hero__title { font-family: var(--f-display); font-weight: 900; font-size: clamp(34px, 3.6vw, 44px); line-height: 1.15; letter-spacing: -0.015em; color: var(--c-charcoal); max-width: 16ch; }
.hero__lead { margin-top: 18px; max-width: 28em; color: var(--c-pencil); font-size: var(--t-sub); line-height: 1.45; }
.hero__actions { display: flex; flex-direction: column; gap: 16px; margin-top: 32px; max-width: 360px; }
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 16px; min-height: 0; text-align: center; }
  .hero__title, .hero__lead { margin-left: auto; margin-right: auto; }
  .hero__actions { margin-left: auto; margin-right: auto; width: 100%; }
}

/* ---- made for band ---- */
.band-groups { border-top: var(--border) solid var(--c-line); border-bottom: var(--border) solid var(--c-line); }
.groups { display: flex; align-items: center; gap: 32px; padding-top: 22px; padding-bottom: 22px; overflow-x: auto; scrollbar-width: none; }
.groups::-webkit-scrollbar { display: none; }
.groups__label { flex: none; font-weight: 800; font-size: var(--t-nav); letter-spacing: var(--tr-caps); text-transform: uppercase; color: var(--c-faded); }
.groups__list { display: flex; gap: 32px; flex: none; }
.groups__list li { display: flex; align-items: center; gap: 10px; white-space: nowrap; font-weight: 800; font-size: var(--t-nav); letter-spacing: var(--tr-caps); text-transform: uppercase; color: var(--c-pencil); }
.groups__list i { width: 22px; height: 22px; border-radius: 7px; background: var(--dot); transform: rotate(45deg) scale(0.8); }

/* ---- product tour: pinned, scroll-driven frames ---- */
.tour { position: relative; height: 820vh; margin-top: var(--section); }
.tour__stage { position: sticky; top: 72px; height: calc(100vh - 72px); height: calc(100svh - 72px); display: flex; align-items: center; }
.tour__inner { display: flex; flex-direction: column; align-items: center; }
.tour .display { font-size: clamp(32px, 4vw, 48px); }
.tour__lead { margin: 8px auto 0; text-align: center; color: var(--c-pencil); font-size: var(--t-body); }
.tour__frame {
  position: relative; margin-top: 20px; aspect-ratio: 16 / 9;
  width: min(100%, calc((100svh - 212px) * 16 / 9));
  overflow: hidden; border-radius: 24px; background: #fff;
}
.tour__poster, .tour__canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.tour__poster { object-fit: cover; }
.tour__canvas { opacity: 0; transition: opacity 250ms; }
.tour.is-ready .tour__canvas { opacity: 1; }
.tour__bar { position: absolute; left: 0; right: 0; bottom: 0; height: 6px; background: #f0f0f0; }
.tour__bar i { display: block; height: 100%; background: var(--c-fox); transform-origin: left; transform: scaleX(var(--tour-p, 0)); }
.tour__alt { margin-left: 6px; font-weight: 700; color: var(--c-teal); white-space: nowrap; }
.tour__alt:hover { text-decoration: underline; }
@media (max-width: 860px) {
  .tour { height: 640vh; }
  .tour__frame { width: 100%; border-radius: 16px; }
}

/* ---- story sections ---- */
.story { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: center; padding-top: var(--section); padding-bottom: 0; }
.story--flip .story__text { order: 2; }
.ticks { display: grid; gap: 10px; margin-top: 24px; }
.ticks li { position: relative; padding-left: 34px; font-weight: 700; color: var(--c-charcoal); }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: 2px; width: 22px; height: 22px; border-radius: 7px;
  background: var(--c-teal-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='m6 12.5 4 4 8-9' fill='none' stroke='%230b7f7b' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 16px no-repeat;
}
.facts { display: grid; gap: 18px; margin-top: 28px; }
.facts div { padding: 16px 20px; border: var(--border) solid var(--c-line); border-radius: var(--r-lg); }
.facts dt { font-weight: 800; color: var(--c-charcoal); }
.facts dd { color: var(--c-pencil); margin-top: 2px; }
@media (max-width: 860px) {
  .story { grid-template-columns: 1fr; gap: 24px; }
  .story--flip .story__text { order: 0; }
  .story .art { order: -1; }
}

/* ---- teacher UI fragment ---- */
.ui-card { margin-top: 28px; max-width: 460px; padding: 18px 20px; border: var(--border) solid var(--c-line); border-radius: var(--r-lg); box-shadow: 0 4px 0 var(--c-line); }
.ui-card__head { display: flex; justify-content: space-between; font-size: 15px; color: var(--c-pencil); }
.ui-card__head b { color: var(--c-charcoal); }
.ui-card__rows { display: grid; gap: 12px; margin-top: 14px; }
.ui-card__rows li { display: grid; grid-template-columns: 14px 1fr 90px 40px; gap: 10px; align-items: center; font-weight: 700; font-size: 15px; }
.ui-dot { width: 14px; height: 14px; border-radius: 5px; background: var(--dot); }
.ui-bar { height: 12px; border-radius: 8px; background: #eee; overflow: hidden; }
.ui-bar i { display: block; height: 100%; width: var(--w); border-radius: 8px; background: var(--c-teal); transform-origin: left; transform: scaleX(var(--grow, 1)); transition: transform 1200ms var(--ease-out); }
.ui-card__rows em { font-style: normal; text-align: right; color: var(--c-pencil); }
.ui-card__flag { margin-top: 14px; padding: 10px 12px; border-radius: 10px; background: var(--c-cream); color: var(--c-accent-press); font-weight: 800; font-size: 15px; }
.js .ui-card:not(.is-in) .ui-bar i { --grow: 0; }

/* ---- try a lesson ---- */
.try { margin-top: var(--section); padding: var(--section) 0; background: var(--c-cream); }
.try__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.lesson { background: #fff; border: var(--border) solid var(--c-cream-2); border-radius: 20px; padding: 24px; box-shadow: 0 6px 0 var(--c-cream-2); }
.lesson__top { display: flex; align-items: center; gap: 14px; }
.lesson__bar { flex: 1; height: 16px; border-radius: 10px; background: #eee; overflow: hidden; }
.lesson__bar i { display: block; height: 100%; width: 100%; border-radius: 10px; background: var(--c-fox); transform-origin: left; transform: scaleX(var(--p, 0.04)); transition: transform 500ms var(--ease-bounce); }
.lesson__hearts { font-weight: 800; color: #d99a00; white-space: nowrap; }
.lesson__q { margin-top: 22px; font-family: var(--f-display); font-weight: 900; font-size: 28px; color: var(--c-charcoal); }
.lesson__opts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 18px; }
.opt {
  display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 16px 8px 12px;
  border: var(--border) solid var(--c-line); border-radius: var(--r-lg); background: #fff; box-shadow: 0 4px 0 var(--c-line);
  font-weight: 800; font-size: 16px; color: var(--c-charcoal);
  transition: transform 120ms ease, border-color 150ms, background 150ms, box-shadow 120ms;
}
.opt span { font-size: 44px; line-height: 1; }
.opt:hover { background: #fafafa; }
.opt:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--c-line); }
.opt[aria-pressed="true"] { border-color: var(--c-sky); background: #eef8ff; box-shadow: 0 4px 0 var(--c-sky); }
.opt.is-right { border-color: var(--c-teal); background: var(--c-teal-soft); box-shadow: 0 4px 0 var(--c-teal); animation: hop 450ms var(--ease-bounce); }
.opt.is-wrong { border-color: #e5484d; background: #ffecec; box-shadow: 0 4px 0 #e5484d; animation: shake 360ms ease; }
@keyframes hop { 40% { transform: translateY(-8px) scale(1.04); } }
@keyframes shake { 25% { transform: translateX(-6px); } 50% { transform: translateX(6px); } 75% { transform: translateX(-3px); } }
.lesson__foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 22px; padding-top: 18px; border-top: var(--border) solid var(--c-line); }
.lesson__msg { font-weight: 800; color: var(--c-pencil); }
.lesson__msg.is-right { color: var(--c-teal); }
.lesson__msg.is-wrong { color: #c62f35; }
@media (max-width: 860px) { .try__inner { grid-template-columns: 1fr; gap: 32px; } }

/* ---- pricing ---- */
.pricing { padding-top: var(--section); }
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; align-items: stretch; }
.plan { position: relative; display: flex; flex-direction: column; gap: 10px; padding: 28px 24px; border: var(--border) solid var(--c-line); border-radius: 20px; box-shadow: 0 4px 0 var(--c-line); }
.plan h3 { font-family: var(--f-display); font-weight: 900; font-size: 26px; color: var(--c-charcoal); }
.plan__price { font-family: var(--f-display); font-weight: 900; font-size: 40px; line-height: 1.1; color: var(--c-heading); }
.plan__price small { font-family: var(--f-text); font-size: 15px; font-weight: 700; color: var(--c-pencil); }
.plan__for { color: var(--c-pencil); }
.plan .ticks { margin: 8px 0 20px; }
.plan .btn { margin-top: auto; }
.plan--main { border-color: var(--c-fox); box-shadow: 0 4px 0 var(--c-fox); }
.plan__tag { position: absolute; top: -15px; left: 24px; padding: 4px 12px; border-radius: 10px; background: var(--c-fox); color: #fff; font-weight: 800; font-size: 13px; letter-spacing: var(--tr-caps); text-transform: uppercase; }
@media (max-width: 860px) { .plans { grid-template-columns: 1fr; gap: 28px; } }

/* ---- faq ---- */
.faq { padding-top: var(--section); }
.faq__list { max-width: 760px; margin: 40px auto 0; display: grid; gap: 12px; }
.faq details { border: var(--border) solid var(--c-line); border-radius: var(--r-lg); padding: 0 20px; }
.faq summary { list-style: none; cursor: pointer; padding: 18px 0; font-weight: 800; font-size: var(--t-sub); color: var(--c-charcoal); display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--f-display); font-size: 26px; line-height: 1; color: var(--c-fox); transition: transform 300ms var(--ease-bounce); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 0 18px; color: var(--c-pencil); }

/* ---- final CTA ---- */
.cta { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; padding-top: var(--section); padding-bottom: var(--section); }
.art--cta .art__media { transform: scaleX(-1); }
.art--cta.is-still .art__media { animation: none; }
@media (max-width: 860px) { .cta { grid-template-columns: 1fr; text-align: center; } .cta p { margin-left: auto; margin-right: auto; } .cta .hero__actions { margin-left: auto; margin-right: auto; } }

/* ---- footer band ---- */
.footer { background: var(--c-accent); color: #fff; padding: 56px 0 32px; }
.footer__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.footer h3 { font-weight: 800; font-size: var(--t-nav); letter-spacing: var(--tr-caps); text-transform: uppercase; margin-bottom: 12px; }
.footer a { display: block; padding: 4px 0; color: #ffe6d2; font-weight: 700; }
.footer a:hover { color: #fff; text-decoration: underline; }
.footer__legal { margin-top: 40px; font-size: var(--t-caption); color: #ffe6d2; }
@media (max-width: 760px) { .footer__grid { grid-template-columns: 1fr 1fr; } }

/* ---- motion: bouncy word pop for headings ---- */
.w { display: inline-block; }
@media (prefers-reduced-motion: no-preference) {
  .js [data-pop] .w { opacity: 0; transform: translateY(0.5em) scale(0.85); transition: opacity 400ms ease, transform 650ms var(--ease-bounce); transition-delay: calc(var(--i) * 70ms); }
  .js [data-pop].is-in .w { opacity: 1; transform: none; }
  .js [data-art] { opacity: 0; transform: scale(0.92) translateY(20px); transition: opacity 600ms ease, transform 900ms var(--ease-bounce); }
  .js [data-art].is-in { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .art.is-still .art__media, .opt.is-right, .opt.is-wrong { animation: none; }
}

/* ---- Lenis (inertial scroll) ---- */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }