/* ================= Tokens ================= */
:root {
  --dark: #101820;
  --blue: #3858F8;
  --white: #FFFFFF;

  --blue-hover: color-mix(in srgb, var(--blue) 82%, black);
  --blue-soft: color-mix(in srgb, var(--blue) 8%, white);
  --blue-line: color-mix(in srgb, var(--blue) 22%, white);
  --blue-light: color-mix(in srgb, var(--blue) 55%, white);
  --text: var(--dark);
  --muted: color-mix(in srgb, var(--dark) 60%, white);
  --line: color-mix(in srgb, var(--dark) 9%, white);
  --dark-2: color-mix(in srgb, var(--dark) 90%, white);
  --dark-line: color-mix(in srgb, white 12%, var(--dark));
  --muted-light: color-mix(in srgb, white 66%, var(--dark));
  --glass: color-mix(in srgb, white 72%, transparent);

  /* pastel background blobs (tints of brand blue, à la 42.uz) */
  --blob-1: color-mix(in srgb, var(--blue) 30%, white);
  --blob-2: color-mix(in srgb, #8E7CF8 26%, white);
  --blob-3: color-mix(in srgb, #5CC8D8 22%, white);

  /* Lupin character palette */
  --fur: #FFF4E2;
  --fur-shade: #F2DDBD;
  --cheek: #F7A3A3;

  --r-sm: 12px;
  --r: 20px;
  --r-lg: 32px;
  --shadow-sm: 0 4px 14px color-mix(in srgb, var(--dark) 6%, transparent);
  --shadow: 0 16px 40px -16px color-mix(in srgb, var(--dark) 14%, transparent);
  --shadow-blue: 0 12px 28px -12px color-mix(in srgb, var(--blue) 45%, transparent);
  --ease: cubic-bezier(.2, .8, .2, 1);
  --font-head: "Sora", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

/* ================= Base ================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; overflow-x: clip; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-family: var(--font-head); letter-spacing: -0.03em; line-height: 1.1; }
h2 { font-size: clamp(2rem, 4.4vw, 3.25rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 700; letter-spacing: -0.02em; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; color: inherit; }
img, svg { display: block; }

.container { width: min(1200px, 100% - 32px); margin-inline: auto; }
.section { padding: 136px 0; position: relative; }
.section--tight { padding: 64px 0 112px; }
.section--dark { background: var(--dark); color: var(--white); border-radius: 48px; margin: 0 12px; }
.section__head { max-width: 640px; display: grid; gap: 14px; margin-bottom: 48px; }
.section__head--row { max-width: none; display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 24px; }
.section__head--row > div:first-child { display: grid; gap: 16px; }

.eyebrow {
  display: inline-flex; width: fit-content; align-items: center; gap: 8px;
  font-size: .8rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--blue);
}
.eyebrow::before { content: ""; width: 18px; height: 2px; background: currentColor; border-radius: 2px; }
.eyebrow--light { color: var(--blue-light); }
.lead { font-size: 1.125rem; color: var(--muted); max-width: 560px; }
.lead b { color: var(--text); font-weight: 600; }
.caption { font-size: .875rem; color: var(--muted); }
.caption-light { font-size: .875rem; color: var(--muted-light); }
.muted-light { color: var(--muted-light); }
.text-blue { color: var(--blue); }
.text-blue-light { color: var(--blue-light); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ================= Background ================= */
.bg { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.blob { position: absolute; border-radius: 50%; filter: blur(110px); opacity: .45; animation: drift 22s ease-in-out infinite alternate; }
.blob--1 { width: 60vw; height: 60vw; left: -15vw; top: -20vw; background: var(--blob-1); }
.blob--2 { width: 50vw; height: 50vw; right: -12vw; top: 5vh; background: var(--blob-2); animation-duration: 28s; }
.blob--3 { width: 45vw; height: 45vw; right: 10vw; bottom: -25vw; background: var(--blob-3); animation-duration: 25s; }
@keyframes drift {
  to { transform: translate(6vw, 8vh) scale(1.12); }
}

/* ================= Buttons & chips ================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 22px; border-radius: var(--r-sm);
  border: 1.5px solid transparent; font-weight: 600; white-space: nowrap;
  transition: transform .25s var(--ease), background .2s, box-shadow .25s, border-color .2s, color .2s;
}
.btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform .25s var(--ease); }
.btn:hover svg { transform: translateX(4px); }
.btn:active { transform: scale(.97); }
.btn--sm { min-height: 40px; padding: 0 18px; font-size: .9rem; }
.btn--lg { min-height: 56px; padding: 0 28px; font-size: 1.02rem; border-radius: 14px; }
.btn--dark { background: var(--dark); color: var(--white); }
.btn--dark:hover { background: var(--blue); box-shadow: var(--shadow-blue); transform: translateY(-2px); }
.btn--blue { background: var(--blue); color: var(--white); box-shadow: var(--shadow-blue); }
.btn--blue:hover { background: var(--blue-hover); transform: translateY(-2px); }
.btn--ghost { background: var(--glass); border-color: var(--line); backdrop-filter: blur(10px); }
.btn--ghost:hover { border-color: var(--dark); }
:focus-visible { outline: 2.5px solid var(--blue); outline-offset: 3px; border-radius: 6px; }

.chip {
  display: inline-flex; align-items: center; min-height: 40px; padding: 0 18px;
  border-radius: 999px; border: 1px solid var(--line); background: var(--white);
  font-size: .9rem; font-weight: 500; transition: all .2s var(--ease);
}
.chip:hover { border-color: var(--blue); color: var(--blue); }
.chip.is-active { background: var(--dark); color: var(--white); border-color: var(--dark); }

.pill {
  display: inline-flex; width: fit-content; align-items: center; gap: 10px;
  padding: 8px 16px; border-radius: 999px; background: var(--glass); backdrop-filter: blur(10px);
  border: 1px solid var(--white); font-size: .875rem; font-weight: 500; box-shadow: var(--shadow-sm);
}
.tag {
  display: inline-flex; align-items: center; gap: 8px; width: fit-content;
  padding: 6px 12px; border-radius: 999px; font-size: .78rem; font-weight: 600;
  background: var(--blue-soft); color: var(--blue);
}
.tag--light { background: color-mix(in srgb, white 18%, transparent); color: var(--white); }
.tag--dark { background: var(--dark-line); color: var(--white); }
.tag--blue { background: var(--blue); color: var(--white); }

.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); display: inline-block; flex: none; }
.dot--white { background: var(--white); }
.dot--live { animation: pulse 1.6s infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--blue) 60%, transparent); }
  100% { box-shadow: 0 0 0 10px transparent; }
}

/* ================= Header ================= */
.header { position: sticky; top: 0; z-index: 50; padding: 12px 0; transition: padding .3s var(--ease); }
.header__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  height: 64px; padding: 0 12px 0 24px; border-radius: 18px;
  background: transparent; border: 1px solid transparent;
  transition: background .3s, border-color .3s, box-shadow .3s;
}
.header.is-scrolled .header__inner { background: var(--glass); backdrop-filter: blur(16px) saturate(1.4); border-color: var(--white); box-shadow: var(--shadow-sm); }
.logo img { height: 26px; width: auto; mix-blend-mode: multiply; }
.nav { display: flex; gap: 6px; }
.nav a { padding: 8px 14px; border-radius: 10px; font-size: .92rem; font-weight: 500; color: var(--muted); transition: color .2s, background .2s; }
.nav a:hover { color: var(--text); background: color-mix(in srgb, var(--dark) 5%, transparent); }
.nav a.is-active { color: var(--blue); }
.header__actions { display: flex; align-items: center; gap: 8px; }
.burger { display: none; width: 44px; height: 44px; border: 0; background: none; position: relative; }
.burger span { position: absolute; left: 12px; right: 12px; height: 2px; border-radius: 2px; background: var(--dark); transition: transform .3s var(--ease); }
.burger span:first-child { top: 18px; }
.burger span:last-child { top: 25px; }
.burger[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* ================= Hero ================= */
.hero { padding: 48px 0 96px; }
.hero__inner { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.hero__text { display: grid; gap: 28px; }
.hero__title { font-size: clamp(2.5rem, 5.6vw, 4.2rem); font-weight: 700; line-height: 1.06; }
.hero__word {
  display: inline-block; color: var(--blue);
  transition: opacity .35s var(--ease), transform .35s var(--ease), filter .35s;
}
.hero__word.is-out { opacity: 0; transform: translateY(-14px); filter: blur(6px); }
.underline { position: relative; white-space: nowrap; display: inline-block; }
.underline::after {
  content: ""; position: absolute; left: -4px; right: -4px; bottom: 4px; height: .28em; z-index: -1;
  background: color-mix(in srgb, var(--blue) 22%, transparent); border-radius: 6px;
  transform-origin: left; animation: mark 1s .6s var(--ease) both;
}
@keyframes mark { from { transform: scaleX(0); } }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; }
.slider-dots { display: flex; gap: 8px; }
.slider-dots button { width: 40px; height: 4px; padding: 0; border: 0; border-radius: 4px; background: color-mix(in srgb, var(--dark) 14%, transparent); position: relative; overflow: hidden; }
.slider-dots button.is-active::after { content: ""; position: absolute; inset: 0; background: var(--dark); transform-origin: left; animation: fillbar 3.2s linear forwards; }
@keyframes fillbar { from { transform: scaleX(0); } }

.hero__visual { position: relative; }
.hero__stage { position: relative; aspect-ratio: 1 / 1; max-width: 560px; margin-inline: auto; display: grid; place-items: center; }
.ring { position: absolute; border-radius: 50%; border: 1.5px dashed color-mix(in srgb, var(--blue) 30%, transparent); }
.ring--2 { inset: 14%; border-style: solid; border-color: var(--white); background: radial-gradient(circle, color-mix(in srgb, white 90%, transparent), color-mix(in srgb, white 30%, transparent) 70%); box-shadow: inset 0 0 60px color-mix(in srgb, var(--blue) 10%, transparent); }
@keyframes spin { to { transform: rotate(360deg); } }

.float-card {
  position: absolute; display: flex; align-items: center; gap: 12px;
  padding: 12px 16px 12px 12px; border-radius: 18px;
  background: var(--glass); backdrop-filter: blur(14px); border: 1px solid var(--white);
  box-shadow: var(--shadow-sm); animation: bob 6s ease-in-out infinite;
}
.float-card b { display: block; font-family: var(--font-head); font-size: 1.05rem; line-height: 1.2; }
.float-card small { color: var(--muted); font-size: .8rem; }
.float-card__icon { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: var(--dark); color: var(--white); }
.float-card__icon--blue { background: var(--blue); }
.float-card__icon svg, .course__icon svg {
  width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
}
.float-card--a { left: -2%; top: 18%; }
.float-card--b { right: -4%; top: 44%; animation-delay: -1.5s; }
@keyframes bob { 50% { transform: translateY(-6px); } }

.speech {
  position: absolute; top: 2%; right: 4%; max-width: 230px;
  padding: 14px 18px; border-radius: 20px 20px 20px 6px;
  background: var(--dark); color: var(--white); font-size: .9rem; font-weight: 500; line-height: 1.45;
  box-shadow: var(--shadow); transition: opacity .3s;
}

/* ================= Lupin character ================= */
.lupin { position: relative; }
.lupin svg { width: 100%; height: auto; overflow: visible; }
.lupin--hero { width: 62%; z-index: 1; }
.lupin--big { width: min(380px, 80%); }
.lupin--avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--blue-soft); display: grid; place-items: center; overflow: hidden; }
.lupin--avatar svg { width: 140%; margin-top: 18%; }
.lupin--peek { width: 150px; margin: -120px auto 0; }

.lupin .l-body { animation: breathe 4s ease-in-out infinite; transform-origin: 50% 90%; transform-box: fill-box; }
.lupin .l-whole { animation: hover 5s ease-in-out infinite; }
.lupin .l-eyes { transition: transform .15s ease-out; }
.lupin .l-eye { transform-box: fill-box; transform-origin: center; animation: blink 4.5s infinite; }
.lupin .l-ear--l { transform-box: fill-box; transform-origin: 70% 100%; animation: earL 6s ease-in-out infinite; }
.lupin .l-ear--r { transform-box: fill-box; transform-origin: 30% 100%; animation: earR 6s ease-in-out infinite; }
.lupin .l-arm { transform-box: fill-box; transform-origin: 50% 10%; }
.lupin .l-tassel { transform-box: fill-box; transform-origin: 50% 0; animation: tassel 3s ease-in-out infinite; }
.lupin .l-mouth-open { opacity: 0; }

.lupin.is-happy .l-arm--r { animation: wave .9s ease-in-out 2; }
.lupin.is-happy .l-mouth { opacity: 0; }
.lupin.is-happy .l-mouth-open { opacity: 1; }
.lupin.is-happy .l-cheek { opacity: .95; }
.lupin.is-thinking .l-eyes { transform: translate(5px, -6px) !important; }
.lupin.is-thinking .l-body { animation: wobble .8s ease-in-out infinite; }
.lupin--peek .l-whole { animation: peek 4s ease-in-out infinite; }

@keyframes breathe { 50% { transform: scale(1.025, .985); } }
@keyframes hover { 50% { transform: translateY(-10px); } }
@keyframes blink { 0%, 90%, 100% { transform: scaleY(1); } 94% { transform: scaleY(.08); } }
@keyframes earL { 0%, 80%, 100% { transform: rotate(0); } 85% { transform: rotate(-12deg); } 90% { transform: rotate(4deg); } }
@keyframes earR { 0%, 40%, 100% { transform: rotate(0); } 45% { transform: rotate(12deg); } 50% { transform: rotate(-4deg); } }
@keyframes tassel { 50% { transform: rotate(10deg); } }
@keyframes wave { 50% { transform: rotate(-50deg); } }
@keyframes wobble { 50% { transform: rotate(3deg); } }
@keyframes peek { 0%, 100% { transform: translateY(14px); } 30%, 70% { transform: translateY(-4px); } }

/* ================= Marquee ================= */

/* ================= Bento (advantage) ================= */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.bento__card {
  position: relative; overflow: hidden; padding: 32px; border-radius: var(--r-lg);
  background: var(--glass); backdrop-filter: blur(16px); border: 1px solid var(--white);
  box-shadow: var(--shadow-sm); display: grid; gap: 8px; align-content: start;
  transition: transform .4s var(--ease), box-shadow .4s;
}

.bento__card--lessons { grid-column: span 3; grid-row: span 2; background: var(--blue); color: var(--white); border-color: var(--blue); }
.bento__card--price { grid-column: span 3; background: var(--dark); color: var(--white); border-color: var(--dark); }
.bento__card--compare { grid-column: span 3; }
.bento__label { font-size: .85rem; font-weight: 600; text-transform: uppercase; letter-spacing: .1em; opacity: .75; }
.bento__big { font-family: var(--font-head); font-weight: 700; font-size: clamp(4.5rem, 11vw, 8.5rem); line-height: .9; letter-spacing: -0.06em; }
.bento__card--price .bento__big { font-size: clamp(3.5rem, 8vw, 6rem); color: var(--blue-light); }
.bento__unit { font-family: var(--font-head); font-weight: 700; font-size: 1.5rem; }
.bento__text { opacity: .78; max-width: 380px; }
.lesson-dots { display: grid; grid-template-columns: repeat(15, 1fr); gap: 6px; margin-top: 28px; }
.lesson-dots i { aspect-ratio: 1; border-radius: 6px; background: color-mix(in srgb, white 22%, transparent); }
.is-visible .lesson-dots i { animation: dotOn .4s var(--ease) both; animation-delay: calc(var(--i) * 70ms + .3s); }
@keyframes dotOn { to { background: var(--white); transform: scale(1); } from { transform: scale(.4); } }

.compare { display: grid; gap: 18px; margin-top: 12px; }
.compare__row { display: grid; grid-template-columns: 130px 1fr auto; gap: 14px; align-items: center; font-size: .92rem; }
.compare__row b { font-family: var(--font-head); font-size: .92rem; white-space: nowrap; }
.compare__row--us b, .compare__row--us > span { color: var(--blue); font-weight: 600; }
.bar { height: 14px; border-radius: 999px; background: color-mix(in srgb, var(--dark) 7%, transparent); overflow: hidden; }
.bar span { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--dark); transition: width 1.4s var(--ease) .3s; }
.compare__row--us .bar span { background: var(--blue); }
.is-visible .bar span { width: var(--w); }

/* ================= Courses ================= */
.filters { display: flex; flex-wrap: wrap; gap: 8px; padding: 6px; border-radius: 999px; background: var(--glass); border: 1px solid var(--white); backdrop-filter: blur(10px); }
.filters .chip { border-color: transparent; background: transparent; }
.filters .chip.is-active { background: var(--dark); }
.courses { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.course {
  position: relative; padding: 28px; border-radius: var(--r-lg);
  background: var(--white); border: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 12px;
  transition: transform .4s var(--ease), box-shadow .4s, border-color .3s;
}
.course:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--blue-line); }
.course p { color: var(--muted); }
.course__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.course__icon { width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; background: var(--blue-soft); color: var(--blue); transition: transform .4s var(--ease), background .3s, color .3s; }
.course:hover .course__icon { background: var(--blue); color: var(--white); }
.course__meta { margin-top: auto; padding-top: 18px; border-top: 1px dashed var(--line); display: flex; justify-content: space-between; align-items: center; font-size: .92rem; color: var(--muted); }
.course__meta b { color: var(--text); font-family: var(--font-head); font-size: 1.1rem; }
.course__price { font-family: var(--font-head); font-weight: 700; color: var(--dark); background: var(--blue-soft); padding: 6px 12px; border-radius: 10px; }
.course--featured { background: var(--dark); color: var(--white); border-color: var(--dark); }
.course--featured p, .course--featured .course__meta { color: var(--muted-light); }
.course--featured .course__meta { border-color: var(--dark-line); }
.course--featured .course__meta b { color: var(--white); }
.course--featured .course__icon { background: var(--blue); color: var(--white); }
.course--featured .course__price { background: var(--blue); color: var(--white); }
.course--soon { grid-column: 1 / -1; background: transparent; border: 2px dashed var(--blue-line); display: grid; grid-template-columns: auto auto 1fr auto; align-items: center; column-gap: 24px; }
.course--soon .course__top { margin: 0; gap: 12px; }
.course--soon .course__meta { margin: 0; padding: 0; border: 0; gap: 16px; }
.course--soon:hover { transform: translateY(-4px); }
.link { color: var(--blue); font-weight: 600; }
.course.is-hidden { display: none; }

/* ================= Steps (42.uz-style cards) ================= */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step {
  padding: 32px; border-radius: var(--r-lg);
  background: var(--glass); backdrop-filter: blur(16px); border: 1px solid var(--white);
  display: grid; grid-template-columns: auto 1fr; gap: 16px; align-content: start;
  box-shadow: var(--shadow-sm);
}
.step__num { width: 40px; height: 40px; border-radius: 50%; background: var(--dark); color: var(--white); display: grid; place-items: center; font-weight: 600; }
.step h3 { font-size: 1.25rem; padding-top: 6px; }
.step__art { grid-column: 1 / -1; position: relative; height: 180px; margin-top: 12px; display: grid; place-items: center; }

.mini-card { width: 66%; padding: 18px; border-radius: 18px; background: var(--white); box-shadow: var(--shadow); display: grid; gap: 10px; position: relative; z-index: 1; transform: rotate(-4deg); transition: transform .4s var(--ease); }
.mini-card--back { position: absolute; height: 120px; background: var(--blue); transform: rotate(6deg) translate(20px, -10px); z-index: 0; }
.step:hover .mini-card:not(.mini-card--back) { transform: rotate(0) translateY(-6px); }
.mini-card__line { height: 10px; border-radius: 6px; background: color-mix(in srgb, var(--dark) 12%, transparent); }
.mini-card__line--s { width: 60%; }
.mini-card__btn { justify-self: end; padding: 6px 14px; border-radius: 10px; background: var(--dark); color: var(--white); font-weight: 700; font-size: .85rem; }

.player { width: 80%; aspect-ratio: 16 / 10; border-radius: 18px; background: var(--dark); position: relative; display: grid; place-items: center; box-shadow: var(--shadow); transform: rotate(3deg); transition: transform .4s var(--ease); }
.step:hover .player { transform: rotate(0); }
.player__play { width: 56px; height: 56px; border-radius: 50%; background: var(--blue); display: grid; place-items: center; box-shadow: 0 0 0 10px color-mix(in srgb, var(--blue) 25%, transparent); animation: pulseRing 2s infinite; }
.player__play svg { width: 22px; height: 22px; fill: var(--white); margin-left: 3px; }
@keyframes pulseRing { 50% { box-shadow: 0 0 0 16px color-mix(in srgb, var(--blue) 10%, transparent); } }
.player__bar { position: absolute; left: 16px; right: 16px; bottom: 16px; height: 6px; border-radius: 6px; background: var(--dark-line); overflow: hidden; }
.player__bar i { display: block; height: 100%; width: 0; background: var(--blue); }
.is-visible .player__bar i { animation: progress 4s var(--ease) .5s forwards; }
@keyframes progress { to { width: 72%; } }

.mini-cert { width: 70%; aspect-ratio: 4 / 3; border-radius: 18px; background: var(--white); box-shadow: var(--shadow); border: 6px double var(--blue-line); display: grid; place-items: center; gap: 4px; transform: rotate(-5deg); transition: transform .4s var(--ease); font-family: var(--font-head); }
.step:hover .mini-cert { transform: rotate(0) scale(1.04); }
.mini-cert__check { width: 52px; height: 52px; border-radius: 50%; background: var(--blue); display: grid; place-items: center; }
.mini-cert__check svg { width: 26px; height: 26px; fill: none; stroke: var(--white); stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }

/* ================= Arena ================= */
.arena { display: grid; grid-template-columns: 1.3fr 1fr; grid-template-rows: auto auto; gap: 20px; }
.arena-card { padding: 32px; border-radius: var(--r-lg); background: var(--dark-2); border: 1px solid var(--dark-line); display: grid; gap: 16px; align-content: start; }
.arena-card--debate { grid-row: span 2; }
.debate__topic { font-size: clamp(1.5rem, 2.6vw, 2rem); font-weight: 700; transition: opacity .3s; }
.vote { display: grid; gap: 12px; margin-top: 12px; }
.vote__btn {
  position: relative; overflow: hidden; display: flex; justify-content: space-between; align-items: center;
  min-height: 60px; padding: 0 20px; border-radius: 16px; border: 1.5px solid var(--dark-line);
  background: color-mix(in srgb, white 4%, transparent); color: var(--white); font-weight: 600; font-size: 1.05rem;
  transition: border-color .2s, transform .2s;
}
.vote__btn:hover:not(:disabled) { border-color: var(--blue-light); transform: translateX(4px); }
.vote__btn:disabled { cursor: default; }
.vote__fill { position: absolute; inset: 0 auto 0 0; width: 0; background: color-mix(in srgb, white 10%, transparent); transition: width 1s var(--ease); }
.vote.is-voted .vote__fill { width: var(--p); }
.vote__btn.is-chosen { border-color: var(--blue); }
.vote__btn.is-chosen .vote__fill { background: var(--blue); }
.vote__label, .vote__pct { position: relative; }
.vote__pct { font-family: var(--font-head); opacity: 0; transition: opacity .4s .3s; }
.vote.is-voted .vote__pct { opacity: 1; }

.countdown { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.countdown div { padding: 14px 4px; border-radius: 14px; background: var(--dark); border: 1px solid var(--dark-line); text-align: center; display: grid; }
.countdown strong { font-family: var(--font-head); font-size: 1.9rem; font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.1; }
.countdown span { font-size: .75rem; color: var(--muted-light); }

.board { list-style: none; padding: 0; margin: 0; display: grid; gap: 4px; }
.board li { display: grid; grid-template-columns: 24px 36px 1fr auto; gap: 12px; align-items: center; padding: 10px 12px; border-radius: 12px; transition: background .2s; }
.board li:hover { background: var(--dark-line); }
.board__pos { font-family: var(--font-head); font-weight: 700; color: var(--muted-light); }
.board li:first-child .board__pos { color: var(--blue-light); }
.board__ava { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; font-size: .75rem; font-weight: 700; background: var(--dark-line); }
.board li:first-child .board__ava { background: var(--blue); }
.board b { font-family: var(--font-head); font-variant-numeric: tabular-nums; }

/* ================= Lupin section ================= */
.lupin-sec { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: center; }
.lupin-sec__stage {
  position: relative; display: grid; place-items: center; padding: 64px 24px 96px;
  border-radius: 48px; background: radial-gradient(circle at 50% 40%, var(--white), color-mix(in srgb, var(--blue) 14%, white) 75%);
  border: 1px solid var(--white); box-shadow: var(--shadow-sm); overflow: hidden;
}
.lupin-sec__name {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 14px; padding: 10px 20px; border-radius: 999px;
  background: var(--white); box-shadow: var(--shadow); white-space: nowrap;
}
.lupin-sec__name b { font-family: var(--font-head); font-size: 1.2rem; }
.lupin-sec__name > span { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: .85rem; }
.lupin-sec__content { display: grid; gap: 32px; }
.lupin-sec__content > div:first-child { display: grid; gap: 16px; }

.chat { border-radius: 24px; background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow); overflow: hidden; }
.chat__head { display: flex; align-items: center; gap: 12px; padding: 14px 20px; border-bottom: 1px solid var(--line); }
.chat__head b { display: block; font-family: var(--font-head); line-height: 1.2; }
.chat__head small { color: var(--muted); font-size: .8rem; }
.chat__messages { padding: 20px; display: grid; gap: 12px; height: 220px; overflow-y: auto; align-content: start; scroll-behavior: smooth; }
.msg { max-width: 86%; padding: 12px 16px; border-radius: 18px; font-size: .94rem; line-height: 1.5; white-space: pre-line; animation: msgIn .4s var(--ease); }
.msg--bot { background: var(--blue-soft); border-bottom-left-radius: 6px; }
.msg--user { background: var(--blue); color: var(--white); justify-self: end; border-bottom-right-radius: 6px; }
.msg--typing { display: flex; gap: 5px; padding: 16px 18px; }
.msg--typing i { width: 7px; height: 7px; border-radius: 50%; background: var(--blue); animation: typing 1s infinite; }
.msg--typing i:nth-child(2) { animation-delay: .15s; }
.msg--typing i:nth-child(3) { animation-delay: .3s; }
@keyframes typing { 50% { opacity: .25; transform: translateY(-4px); } }
@keyframes msgIn { from { opacity: 0; transform: translateY(10px) scale(.98); } }
.chat__suggest { display: flex; flex-wrap: wrap; gap: 8px; padding: 0 20px 14px; }
.chat__suggest .chip { min-height: 36px; font-size: .85rem; background: var(--white); }
.chat__suggest .chip:disabled { opacity: .4; pointer-events: none; }
.chat__form { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--line); }
.chat__form input { flex: 1; min-width: 0; min-height: 48px; padding: 0 16px; border-radius: 14px; border: 1px solid var(--line); background: var(--blue-soft); font: inherit; color: var(--text); }
.chat__form input:focus { outline: none; border-color: var(--blue); background: var(--white); }
.chat__send { width: 48px; height: 48px; border-radius: 14px; border: 0; background: var(--dark); color: var(--white); display: grid; place-items: center; transition: background .2s; }
.chat__send:hover { background: var(--blue); }
.chat__send svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ================= Live ================= */
.live { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: center; }
.live__head { display: grid; gap: 16px; }

.schedule { border-radius: var(--r-lg); background: var(--glass); backdrop-filter: blur(16px); border: 1px solid var(--white); box-shadow: var(--shadow); padding: 10px; }
.schedule__now { position: relative; overflow: hidden; padding: 28px; border-radius: 24px; background: var(--dark); color: var(--white); display: grid; gap: 10px; margin-bottom: 6px; }
.schedule__now .caption { color: var(--muted-light); }
.schedule__now .schedule__title { font-family: var(--font-head); font-size: 1.4rem; font-weight: 700; }
.schedule__row { display: grid; grid-template-columns: 72px 1fr auto; gap: 16px; align-items: center; padding: 16px 18px; border-radius: 18px; transition: background .2s; }
.schedule__row:hover { background: var(--white); }
.schedule__time { font-family: var(--font-head); font-weight: 700; font-size: 1.1rem; color: var(--blue); }
.schedule__title { font-weight: 600; }
.remind { min-height: 40px; padding: 0 16px; border-radius: 12px; border: 1.5px solid var(--line); background: var(--white); font-size: .85rem; font-weight: 600; transition: all .2s; }
.remind:hover { border-color: var(--dark); }
.remind[aria-pressed="true"] { background: var(--dark); color: var(--white); border-color: var(--dark); }

/* ================= Certificate ================= */
.cert-box {
  position: relative; overflow: hidden; display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
  padding: 64px; border-radius: 48px; background: var(--dark); color: var(--white);
}
.cert-box::before { content: ""; position: absolute; width: 480px; height: 480px; right: -160px; top: -200px; border-radius: 50%; background: var(--blue); filter: blur(140px); opacity: .3; }
.cert-box__text { position: relative; display: grid; gap: 18px; }
.cert-stats { display: flex; gap: 40px; margin-top: 12px; }
.cert-stats div { display: grid; }
.cert-stats b { font-family: var(--font-head); font-size: 2.4rem; font-weight: 700; letter-spacing: -0.04em; }
.cert-stats span { color: var(--muted-light); font-size: .9rem; }

.certificate {
  position: relative; padding: 36px; border-radius: 24px; background: var(--white); color: var(--text);
  display: grid; gap: 8px; box-shadow: 0 40px 80px -20px color-mix(in srgb, black 50%, transparent);
  transform: perspective(900px) rotateY(-6deg) rotateX(3deg); transition: transform .2s ease-out;
}
.certificate::before { content: ""; position: absolute; inset: 10px; border: 1.5px solid var(--blue-line); border-radius: 16px; pointer-events: none; }
.certificate__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; font-size: .78rem; color: var(--muted); }
.certificate__top img { height: 20px; width: auto; mix-blend-mode: multiply; }
.certificate__label { font-size: .8rem; letter-spacing: .3em; text-transform: uppercase; color: var(--blue); font-weight: 600; }
.certificate__name { font-family: var(--font-head); font-size: 2rem; font-weight: 700; letter-spacing: -0.03em; }
.certificate__desc { color: var(--muted); font-size: .92rem; max-width: 320px; }
.certificate__bottom { display: flex; justify-content: space-between; align-items: flex-end; margin-top: 24px; }
.qr { width: 64px; height: 64px; border-radius: 6px; background: conic-gradient(var(--dark) 25%, transparent 0 50%, var(--dark) 0 75%, transparent 0) 0 0 / 16px 16px; }
.seal { width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center; background: var(--blue); box-shadow: 0 0 0 6px var(--blue-soft); }
.seal svg { width: 28px; height: 28px; fill: none; stroke: var(--white); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }

/* ================= FAQ ================= */
.faq { display: grid; grid-template-columns: 1fr 1.4fr; gap: 56px; align-items: start; }
.faq__list { display: grid; gap: 12px; }
.faq details { border-radius: 20px; background: var(--glass); backdrop-filter: blur(12px); border: 1px solid var(--white); box-shadow: var(--shadow-sm); transition: background .2s; }
.faq details[open] { background: var(--white); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 64px 22px 24px; position: relative; font-weight: 600; font-size: 1.05rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 20px; top: 50%; translate: 0 -50%; width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; background: var(--blue-soft); color: var(--blue); font-size: 1.3rem; transition: transform .3s var(--ease), background .2s, color .2s; }
.faq details[open] summary::after { transform: rotate(45deg); background: var(--blue); color: var(--white); }
.faq details p { padding: 0 24px 22px; color: var(--muted); }

/* ================= CTA ================= */
.cta {
  position: relative; text-align: center; display: grid; justify-items: center; gap: 16px;
  padding: 0 32px 64px; border-radius: 48px; margin-top: 120px;
  background: var(--glass); backdrop-filter: blur(20px); border: 1px solid var(--white); box-shadow: var(--shadow);
}
.cta h2 { font-size: clamp(2.2rem, 4.6vw, 3.4rem); font-weight: 700; }
.signup { display: flex; gap: 8px; width: 100%; max-width: 520px; margin-top: 12px; padding: 8px; border-radius: 20px; background: var(--white); box-shadow: var(--shadow-sm); border: 1px solid var(--line); }
.signup input { flex: 1; min-width: 0; min-height: 56px; padding: 0 16px; border: 0; background: transparent; font: inherit; color: var(--text); }
.signup input:focus { outline: none; }
.signup:focus-within { border-color: var(--blue); }
.form-msg { min-height: 1.5em; font-size: .92rem; font-weight: 500; }

/* ================= Footer ================= */
.footer { padding: 32px 0 40px; }
.footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px; }
.footer__inner img { height: 22px; width: auto; mix-blend-mode: multiply; }
.footer__links { display: flex; flex-wrap: wrap; gap: 24px; font-size: .92rem; color: var(--muted); }
.footer__links a:hover { color: var(--blue); }

/* ================= Reveal ================= */
.reveal { opacity: 0; transform: translateY(32px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ================= Responsive ================= */
@media (max-width: 1080px) {
  .nav a { padding: 8px 10px; }
}

@media (max-width: 960px) {
  .hero__inner, .lupin-sec, .live, .cert-box, .faq { grid-template-columns: 1fr; gap: 40px; }
  .hero__stage { max-width: 460px; }
  .courses, .steps { grid-template-columns: repeat(2, 1fr); }
  .arena { grid-template-columns: 1fr 1fr; }
  .arena-card--debate { grid-column: 1 / -1; grid-row: auto; }
  .cert-box { padding: 48px 32px; }
  .certificate { max-width: 460px; }
}

@media (max-width: 860px) {
  .nav {
    position: fixed; top: 88px; left: 16px; right: 16px;
    flex-direction: column; gap: 2px; padding: 12px;
    border-radius: 20px; background: var(--white); box-shadow: var(--shadow);
    transform: translateY(-10px); opacity: 0; pointer-events: none;
    transition: opacity .25s, transform .25s var(--ease);
  }
  .nav.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .nav a { padding: 14px 16px; font-size: 1rem; color: var(--text); }
  .burger { display: block; }
  .header__inner { background: var(--glass); backdrop-filter: blur(16px); border-color: var(--white); padding: 0 6px 0 18px; }
}

@media (max-width: 680px) {
  .section { padding: 80px 0; }
  .section--dark { border-radius: 32px; margin: 0 8px; }
  .section__head { margin-bottom: 36px; }
  .hero { padding: 24px 0 64px; }
  .hero__cta .btn { flex: 1; }
  .float-card { padding: 8px 12px 8px 8px; gap: 8px; border-radius: 14px; }
  .float-card__icon { width: 34px; height: 34px; border-radius: 10px; }
  .float-card b { font-size: .9rem; }
  .float-card--a { left: -2%; top: 14%; }
  .float-card--b { right: -2%; }
  .speech { font-size: .8rem; max-width: 170px; padding: 10px 14px; right: 0; top: -2%; }
  .bento { grid-template-columns: 1fr; }
  .bento__card { grid-column: auto !important; grid-row: auto !important; padding: 26px; }
  .compare__row { grid-template-columns: 1fr auto; }
  .compare__row .bar { grid-column: 1 / -1; grid-row: 2; }
  .courses, .steps, .arena { grid-template-columns: 1fr; }
  .step { min-height: 0; }
  .course--soon { grid-template-columns: 1fr; row-gap: 12px; }
  .arena-card { padding: 24px; }
  .countdown strong { font-size: 1.5rem; }
  .lupin-sec__stage { padding: 48px 16px 88px; border-radius: 32px; }
  .schedule__row { grid-template-columns: 1fr auto; gap: 4px 12px; }
  .schedule__time { grid-column: 1 / -1; font-size: .95rem; }
  .cert-box { padding: 36px 20px; border-radius: 32px; }
  .cert-stats { gap: 24px; }
  .certificate { padding: 28px 24px; transform: none; }
  .certificate__name { font-size: 1.7rem; }
  .cta { padding: 0 20px 40px; border-radius: 32px; }
  .signup { flex-direction: column; }
  .signup .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
  .bar span { width: var(--w); }
}