/* =========================================================
   LANDING — Vocabra
   Дизайн-система: Jura (display, числа, метки) + Manrope (body).
   Цвета — из брифа лендинга (navy #0a1628, primary orange).
   ========================================================= */

:root {
  --bg: #0a1628;
  --bg-deep: #060e1c;
  --bg-elev: rgba(13, 27, 42, 0.7);
  --bg-elev-solid: #0d1b2a;
  --line: rgba(0, 229, 255, 0.2);
  --line-soft: rgba(0, 229, 255, 0.1);
  --line-strong: rgba(0, 229, 255, 0.45);
  --text: #e6f1ff;
  --muted: #8892b0;
  --dim: #5b6b86;
  --cyan: #00e5ff;
  --cyan-glow: rgba(0, 229, 255, 0.35);
  --cyan-glow-soft: rgba(0, 229, 255, 0.18);
  --orange: #ff6b35;
  --orange-glow: rgba(255, 107, 53, 0.4);
  --green: #00ffa3;
  --green-glow: rgba(0, 255, 163, 0.35);
  --t: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);

  --font-display: "Jura", sans-serif;
  --font-body: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root.light {
  --bg: #f4f7fb;
  --bg-deep: #e6edf5;
  --bg-elev: rgba(255, 255, 255, 0.85);
  --bg-elev-solid: #ffffff;
  --line: rgba(8, 145, 178, 0.25);
  --line-soft: rgba(8, 145, 178, 0.12);
  --line-strong: rgba(8, 145, 178, 0.5);
  --text: #0a1628;
  --muted: #4a5a78;
  --dim: #7d8ba8;
  --cyan: #0891b2;
  --cyan-glow: rgba(8, 145, 178, 0.3);
  --cyan-glow-soft: rgba(8, 145, 178, 0.12);
  --orange: #d4541b;
  --orange-glow: rgba(212, 84, 27, 0.3);
  --green: #059669;
  --green-glow: rgba(5, 150, 105, 0.3);
}
:root.light html { color-scheme: light; }

.landing-page * { box-sizing: border-box; }
html { color-scheme: dark; scroll-behavior: smooth; }
body.landing-page {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Display-шрифт: заголовки, метки, числа, кнопки. Всё, что в брифе UPPERCASE
   или несёт акцент Tron-чертежа. Body-текст остаётся в Manrope. */
.landing-page h1,
.landing-page h2,
.landing-page h3,
.landing-page .btn,
.landing-page .nav__brand,
.landing-page .nav__link,
.landing-page .nav__login,
.landing-page .nav__user,
.landing-page .hero__eyebrow,
.landing-page .sec-eyebrow,
.landing-page .method__num,
.landing-page .lesson-mock__chip,
.landing-page .lesson-mock__count,
.landing-page .lesson-mock__path,
.landing-page .lesson-mock__input,
.landing-page .author__big,
.landing-page .author__panel-eyebrow,
.landing-page .author__sig-name,
.landing-page .author__chart-cap,
.landing-page .pain__index,
.landing-page .rank-cell em,
.landing-page .lb__rank,
.landing-page .lb__streak,
.landing-page .faq__num,
.landing-page .foot__brand,
.landing-page .foot__version,
.landing-page .final__sub,
.landing-page code {
  font-family: var(--font-display);
}

/* Decorative grid underlay */
.landing-page .grid-bg {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 30%, transparent 80%);
}
:root.light .landing-page .grid-bg {
  background-image:
    linear-gradient(rgba(8, 145, 178, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(8, 145, 178, 0.07) 1px, transparent 1px);
}

.landing-page .wrap { max-width: 1200px; margin: 0 auto; padding: 0 32px; position: relative; z-index: 1; }

/* ---------- HEADER ---------- */
.landing-page .nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 22, 40, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
:root.light .landing-page .nav { background: rgba(244, 247, 251, 0.85); }
.landing-page .nav__inner {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 18px 32px;
  max-width: 1200px;
  margin: 0 auto;
}
.landing-page .nav__brand {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--cyan);
  text-shadow: 0 0 14px var(--cyan-glow);
  text-decoration: none;
  white-space: nowrap;
}
.landing-page .nav__links {
  display: flex;
  gap: 28px;
  margin: 0 auto;
}
.landing-page .nav__link {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color var(--t), border-color var(--t);
}
.landing-page .nav__link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }
.landing-page .nav__right { display: flex; align-items: center; gap: 16px; }
.landing-page .nav__login {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color var(--t);
}
.landing-page .nav__login:hover { color: var(--cyan); }
.landing-page .nav__user {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--muted);
}
.landing-page .nav__user strong { color: var(--cyan); font-weight: 700; margin-right: 6px; }
.landing-page .theme-toggle {
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 6px;
  color: var(--cyan);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t);
}
.landing-page .theme-toggle:hover { border-color: var(--cyan); box-shadow: 0 0 12px var(--cyan-glow-soft); }
.landing-page .theme-toggle svg { width: 16px; height: 16px; }
.landing-page .theme-toggle .ic-sun { display: none; }
:root.light .landing-page .theme-toggle .ic-sun { display: block; }
:root.light .landing-page .theme-toggle .ic-moon { display: none; }

/* ---------- BUTTONS ---------- */
.landing-page .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 6px;
  border: 1px solid;
  cursor: pointer;
  transition: all var(--t);
  background: transparent;
  white-space: nowrap;
}
.landing-page .btn--primary {
  color: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 0 18px var(--orange-glow);
}
.landing-page .btn--primary:hover {
  background: var(--orange);
  color: var(--bg);
  box-shadow: 0 0 32px var(--orange-glow);
}
.landing-page .btn--ghost { color: var(--cyan); border-color: var(--cyan); }
.landing-page .btn--ghost:hover {
  background: var(--cyan);
  color: var(--bg);
  box-shadow: 0 0 24px var(--cyan-glow);
}
.landing-page .btn--lg { padding: 18px 36px; font-size: 14px; }
.landing-page .btn svg { width: 14px; height: 14px; stroke-width: 2; }

/* ---------- HERO ---------- */
.landing-page .hero { padding: 64px 0 96px; position: relative; }
.landing-page .hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 72px;
  align-items: center;
}
.landing-page .hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  background: rgba(0, 229, 255, 0.05);
  margin-bottom: 28px;
}
.landing-page .hero__eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan-glow);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.landing-page .hero h1 {
  margin: 0 0 22px;
  font-size: clamp(34px, 5vw, 60px);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.5px;
  color: var(--text);
  text-wrap: balance;
}
.landing-page .hero h1 em {
  font-style: normal;
  color: var(--orange);
  text-shadow: 0 0 24px var(--orange-glow);
}
.landing-page .hero__lede {
  margin: 0 0 36px;
  font-size: 18px;
  line-height: 1.55;
  color: var(--muted);
  max-width: 560px;
  text-wrap: pretty;
}
.landing-page .hero__lede em { font-style: italic; color: var(--dim); }
.landing-page .hero__cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.landing-page .hero__bullets {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.landing-page .hero__bullets li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 16px;
  color: var(--text);
  line-height: 1.5;
}
.landing-page .hero__bullets svg {
  width: 22px; height: 22px;
  stroke: var(--cyan);
  stroke-width: 1.5;
  fill: none;
  flex-shrink: 0;
  margin-top: 2px;
  filter: drop-shadow(0 0 6px var(--cyan-glow-soft));
}

/* Подпись-заголовок над демо-блоками */
.landing-page .demo-caption {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--orange);
  margin: 48px 0 16px;
  text-align: center;
}

/* ---------- SECTION SHARED ---------- */
.landing-page section { padding: 96px 0; position: relative; }
.landing-page .sec-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 20px;
}
.landing-page h2 {
  margin: 0 0 24px;
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.3px;
  color: var(--text);
  text-wrap: balance;
  max-width: 900px;
}
.landing-page .sec-lede {
  margin: 0 0 56px;
  font-size: 17px;
  color: var(--muted);
  line-height: 1.6;
  max-width: 680px;
  text-wrap: pretty;
}

/* ---------- PAIN ---------- */
.landing-page .pain { border-top: 1px solid var(--line-soft); }
.landing-page .pain__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.landing-page .pain__item {
  padding: 28px 28px 32px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: all var(--t);
  position: relative;
}
.landing-page .pain__item:hover {
  border-color: var(--line-strong);
  box-shadow: 0 0 24px var(--cyan-glow-soft);
}
.landing-page .pain__icon {
  width: 40px; height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.04);
}
.landing-page .pain__icon svg { width: 20px; height: 20px; stroke: currentColor; stroke-width: 1.5; fill: none; }
.landing-page .pain__item p {
  margin: 0;
  font-size: 17px;
  line-height: 1.45;
  color: var(--text);
  text-wrap: pretty;
}
.landing-page .pain__index {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--dim);
  font-weight: 600;
}

/* ---------- METHOD ---------- */
.landing-page .method {
  border-top: 1px solid var(--line-soft);
  background:
    radial-gradient(ellipse at 80% 0%, rgba(255, 107, 53, 0.05), transparent 50%),
    radial-gradient(ellipse at 0% 100%, rgba(0, 229, 255, 0.05), transparent 50%);
}
.landing-page .beta__cta {
  margin-top: 36px;
  display: flex;
  justify-content: center;
}
.landing-page .method__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 56px;
}
.landing-page .method__card {
  padding: 32px 28px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all var(--t);
  position: relative;
  overflow: hidden;
}
.landing-page .method__card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.3;
  transition: opacity var(--t);
}
.landing-page .method__card:hover { border-color: var(--line-strong); box-shadow: 0 0 24px var(--cyan-glow-soft); }
.landing-page .method__card:hover::before { opacity: 0.8; }
.landing-page .method__num {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--orange);
  margin-bottom: 4px;
}
.landing-page .method__card h3 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.15;
  color: var(--text);
  letter-spacing: -0.2px;
}
.landing-page .method__card p {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
  line-height: 1.55;
}
.landing-page .method__card p em {
  font-style: normal;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.5px;
}
.landing-page .method__card code {
  font-weight: 600;
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.08);
  padding: 1px 6px;
  border-radius: 3px;
  letter-spacing: 0.3px;
}

/* Lesson screenshot mock */
.landing-page .lesson-mock {
  border: 1px solid var(--cyan);
  border-radius: 8px;
  background: var(--bg-elev);
  box-shadow: 0 0 32px var(--cyan-glow-soft);
  overflow: hidden;
  max-width: 720px;
  margin: 0 auto;
  position: relative;
}
.landing-page .lesson-mock::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  animation: shimmer 3s infinite;
  z-index: 2;
}
@keyframes shimmer {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}
.landing-page .lesson-mock__chrome {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(6, 14, 28, 0.5);
}
.landing-page .lesson-mock__dots { display: flex; gap: 6px; }
.landing-page .lesson-mock__dots span {
  width: 9px; height: 9px; border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(0, 229, 255, 0.05);
}
.landing-page .lesson-mock__path {
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--muted);
}
.landing-page .lesson-mock__path strong { color: var(--cyan); font-weight: 600; }
.landing-page .lesson-mock__body {
  padding: 36px 40px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.landing-page .lesson-mock__progress {
  display: flex;
  align-items: center;
  gap: 6px;
}
.landing-page .lesson-mock__count {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 1px;
  margin-right: 6px;
}
.landing-page .lesson-mock__seg {
  flex: 1;
  height: 3px;
  background: var(--line-soft);
  border-radius: 2px;
}
.landing-page .lesson-mock__seg.done { background: var(--cyan); box-shadow: 0 0 6px var(--cyan-glow-soft); }
.landing-page .lesson-mock__seg.active { background: var(--orange); box-shadow: 0 0 6px var(--orange-glow); }
.landing-page .lesson-mock__prompt {
  padding: 28px;
  border: 1px solid var(--cyan);
  border-radius: 6px;
  background: rgba(0, 229, 255, 0.04);
  box-shadow: 0 0 20px var(--cyan-glow-soft);
}
.landing-page .lesson-mock__prompt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.landing-page .lesson-mock__prompt-header .lesson-mock__chip {
  margin-bottom: 0;
}
.landing-page .lesson-mock__tts {
  width: 30px;
  height: 30px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: rgba(0, 229, 255, 0.05);
  color: var(--cyan);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--t);
}
.landing-page .lesson-mock__tts:hover {
  background: rgba(0, 229, 255, 0.12);
  border-color: var(--cyan);
  box-shadow: 0 0 10px var(--cyan-glow-soft);
}
.landing-page .lesson-mock__tts svg { width: 14px; height: 14px; }
.landing-page .lesson-mock__mic {
  margin-left: auto;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: rgba(0, 229, 255, 0.05);
  color: var(--cyan);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--t);
}
.landing-page .lesson-mock__mic:hover {
  background: rgba(0, 229, 255, 0.12);
  border-color: var(--cyan);
  box-shadow: 0 0 10px var(--cyan-glow-soft);
}
.landing-page .lesson-mock__mic svg { width: 14px; height: 14px; }

.landing-page .lesson-mock__chip {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 10px;
}
.landing-page .lesson-mock__ru {
  font-size: 26px;
  font-weight: 500;
  line-height: 1.2;
  margin: 0 0 6px;
  color: var(--text);
}
.landing-page .lesson-mock__hint {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  font-style: italic;
}
.landing-page .lesson-mock__input {
  padding: 14px 18px;
  background: rgba(6, 14, 28, 0.6);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  font-size: 16px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.landing-page .lesson-mock__input span { color: var(--cyan); }
.landing-page .lesson-mock__cursor {
  display: inline-block;
  width: 8px;
  height: 18px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan-glow);
  animation: blink 1.1s steps(2) infinite;
  vertical-align: middle;
}
@keyframes blink { 50% { opacity: 0; } }
.landing-page .lesson-mock__feedback {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--green);
  border-left: 3px solid var(--green);
  border-radius: 4px;
  background: rgba(0, 255, 163, 0.05);
  box-shadow: 0 0 18px var(--green-glow);
  font-size: 14px;
  color: var(--green);
  align-items: flex-start;
}
.landing-page .lesson-mock__feedback svg {
  width: 18px; height: 18px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  flex-shrink: 0;
  margin-top: 1px;
}
.landing-page .lesson-mock__feedback p { margin: 0; line-height: 1.4; color: var(--text); }
.landing-page .lesson-mock__feedback strong { color: var(--green); font-weight: 700; letter-spacing: 0.5px; }

/* ---- Анимация мока урока ---- */
.landing-page .lesson-mock__ru,
.landing-page .lesson-mock__hint,
.landing-page .lesson-mock__input span[data-lm="answer"] {
  transition: opacity 0.25s ease;
}
.landing-page .lesson-mock.is-fading .lesson-mock__ru,
.landing-page .lesson-mock.is-fading .lesson-mock__hint { opacity: 0; }

.landing-page .lesson-mock__feedback {
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0s linear 0.3s;
}
.landing-page .lesson-mock__feedback.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0s;
}
.landing-page .lesson-mock__fb-ok,
.landing-page .lesson-mock__fb-warn { display: none; width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px; }
.landing-page .lesson-mock__feedback.is-correct .lesson-mock__fb-ok { display: block; }
.landing-page .lesson-mock__feedback.is-wrong .lesson-mock__fb-warn { display: block; }

.landing-page .lesson-mock__feedback.is-wrong {
  border-color: var(--orange);
  border-left-color: var(--orange);
  background: rgba(255, 107, 53, 0.06);
  box-shadow: 0 0 18px var(--orange-glow);
  color: var(--orange);
}
.landing-page .lesson-mock__feedback.is-wrong strong { color: var(--orange); }

/* ---------- AUTHOR ---------- */
.landing-page .author { border-top: 1px solid var(--line-soft); }
.landing-page .author__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px;
  align-items: start;
}
.landing-page .author__prose p {
  margin: 0 0 18px;
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  text-wrap: pretty;
}
.landing-page .author__prose p em { font-style: italic; color: var(--muted); }
.landing-page .author__prose strong { color: var(--cyan); font-weight: 700; }
.landing-page .author__sig {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 18px;
  border: 1px dashed var(--line-strong);
  border-radius: 6px;
  background: rgba(0, 229, 255, 0.03);
}
.landing-page .author__photo {
  float: left;
  width: 150px;
  height: 190px;
  margin: 4px 22px 14px 0;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(0, 229, 255, 0.25);
  box-shadow: 0 0 24px var(--cyan-glow-soft);
  background: var(--bg);
}
.landing-page .author__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.landing-page .author__prose::after {
  content: "";
  display: table;
  clear: both;
}
.landing-page .author__sig-name {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text);
  text-transform: uppercase;
}
.landing-page .author__sig-meta {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.5px;
}
.landing-page .author__panel {
  padding: 28px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}
.landing-page .author__panel-eyebrow {
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--orange);
  font-weight: 700;
  margin-bottom: 12px;
}
.landing-page .author__panel-eyebrow span {
  color: var(--muted);
  font-weight: 500;
  margin-left: 6px;
}
.landing-page .author__big {
  font-size: 72px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  text-shadow: 0 0 24px var(--cyan-glow);
  margin: 0;
  letter-spacing: -2px;
}
.landing-page .author__big small {
  font-size: 16px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  margin-left: 8px;
  vertical-align: 12px;
  text-shadow: none;
}
.landing-page .author__sub {
  margin: 6px 0 20px;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.5px;
}
.landing-page .author__chart,
.landing-page .author__chart-wrap {
  display: block;
  width: 100%;
  height: 220px;
  border-top: 1px dashed var(--line-soft);
  padding-top: 16px;
  margin-top: 12px;
  position: relative;
}
.landing-page .author__chart-wrap canvas {
  width: 100% !important;
  height: 100% !important;
}
.landing-page .author__chart-cap {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--dim);
  margin-top: 8px;
}
.landing-page .author__chart-cap strong { color: var(--orange); font-weight: 700; letter-spacing: 1px; }

/* ---------- PROGRESS ---------- */
.landing-page .progress {
  border-top: 1px solid var(--line-soft);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(0, 229, 255, 0.04), transparent 60%);
}
.landing-page .progress__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.landing-page .progress__card {
  padding: 32px 28px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all var(--t);
}
.landing-page .progress__card:hover { border-color: var(--line-strong); box-shadow: 0 0 24px var(--cyan-glow-soft); }
.landing-page .progress__card h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.1px;
}
.landing-page .progress__card p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.55;
}

.landing-page .mini-burn {
  height: 80px;
  width: 100%;
}
.landing-page .mini-burn-cap {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--dim);
}
.landing-page .mini-burn-cap strong { font-weight: 700; }
.landing-page .mini-burn-cap .left strong { color: var(--cyan); }
.landing-page .mini-burn-cap .right strong { color: var(--orange); }

.landing-page .rank-ladder {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
  padding: 14px;
  border: 1px dashed var(--line-strong);
  border-radius: 4px;
  background: rgba(6, 14, 28, 0.4);
}
.landing-page .rank-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 8px 4px;
  border-radius: 3px;
  transition: all var(--t);
}
.landing-page .rank-cell.is-active {
  background: rgba(0, 229, 255, 0.08);
  box-shadow: 0 0 12px var(--cyan-glow-soft);
}
.landing-page .rank-cell img { width: 28px; height: auto; opacity: 0.85; }
.landing-page .rank-cell.is-active img { opacity: 1; filter: drop-shadow(0 0 6px var(--cyan-glow)); }
.landing-page .rank-cell em {
  font-style: normal;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--dim);
}
.landing-page .rank-cell.is-active em { color: var(--cyan); }

.landing-page .lb {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.landing-page .lb li {
  display: grid;
  grid-template-columns: 18px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid var(--line-soft);
  border-radius: 3px;
  font-size: 13px;
  letter-spacing: 0.3px;
}
.landing-page .lb li.me {
  border-color: var(--cyan);
  background: rgba(0, 229, 255, 0.06);
  box-shadow: 0 0 12px var(--cyan-glow-soft);
}
.landing-page .lb__rank { font-weight: 700; color: var(--dim); font-size: 11px; letter-spacing: 1px; }
.landing-page .lb li.me .lb__rank { color: var(--orange); }
.landing-page .lb__name { color: var(--text); }
.landing-page .lb li.me .lb__name { color: var(--cyan); font-weight: 600; }
.landing-page .lb__streak { font-weight: 700; color: var(--orange); font-size: 12px; letter-spacing: 1px; }

/* ---------- FAQ ---------- */
.landing-page .faq { border-top: 1px solid var(--line-soft); }
.landing-page .faq__list {
  max-width: 880px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.landing-page details.faq__item {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg-elev);
  transition: border-color var(--t), box-shadow var(--t);
  overflow: hidden;
}
.landing-page details.faq__item[open] {
  border-color: var(--cyan);
  box-shadow: 0 0 24px var(--cyan-glow-soft);
}
.landing-page details.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.2px;
  transition: color var(--t);
}
.landing-page details.faq__item summary::-webkit-details-marker { display: none; }
.landing-page details.faq__item summary:hover { color: var(--cyan); }
.landing-page .faq__num {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--orange);
  flex-shrink: 0;
  width: 32px;
}
.landing-page .faq__q { flex: 1; text-wrap: pretty; }
.landing-page .faq__caret {
  width: 18px; height: 18px;
  stroke: var(--cyan);
  stroke-width: 1.8;
  fill: none;
  flex-shrink: 0;
  transition: transform var(--t);
}
.landing-page details.faq__item[open] .faq__caret { transform: rotate(180deg); }
.landing-page .faq__a {
  padding: 0 24px 22px 70px;
  font-size: 15px;
  color: var(--muted);
  line-height: 1.65;
  text-wrap: pretty;
}
.landing-page .faq__a p { margin: 0 0 10px; }
.landing-page .faq__a p:last-child { margin-bottom: 0; }
.landing-page .faq__a strong { color: var(--text); font-weight: 700; }
.landing-page .faq__a em { font-style: italic; color: var(--dim); }

/* ---------- FINAL CTA ---------- */
.landing-page .final {
  padding: 96px 0;
  border-top: 1px solid var(--line-soft);
  text-align: center;
  position: relative;
}
.landing-page .final::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 50%, rgba(255, 107, 53, 0.08), transparent 50%);
  pointer-events: none;
}
.landing-page .final h2 {
  margin: 0 auto 36px;
  max-width: 780px;
  text-align: center;
  text-wrap: balance;
}
.landing-page .final__sub {
  max-width: 560px;
  margin: -16px auto 36px;
  font-size: 14px;
  color: var(--dim);
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ---------- FOOTER ---------- */
.landing-page footer {
  border-top: 1px solid var(--line);
  padding: 36px 0 48px;
  background: var(--bg-deep);
}
.landing-page .foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.5px;
}
.landing-page .foot__brand {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--cyan);
  text-shadow: 0 0 12px var(--cyan-glow-soft);
}
.landing-page .foot__meta { display: flex; gap: 24px; align-items: center; }
.landing-page .foot__meta a { color: var(--cyan); text-decoration: none; transition: color var(--t); }
.landing-page .foot__meta a:hover { color: var(--orange); }
.landing-page .foot__version {
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--dim);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .landing-page .hero__grid { grid-template-columns: 1fr; gap: 48px; }
  .landing-page .tron { max-width: 100%; margin: 0; }
  .landing-page .author__grid { grid-template-columns: 1fr; gap: 36px; }
  .landing-page .nav__links { display: none; }
}
@media (max-width: 720px) {
  .landing-page section { padding: 64px 0; }
  .landing-page .hero { padding: 48px 0 64px; }
  .landing-page .wrap { padding: 0 20px; }
  .landing-page .nav__inner { padding: 14px 20px; gap: 12px; }
  .landing-page .pain__list,
  .landing-page .method__cards,
  .landing-page .progress__cards { grid-template-columns: 1fr; }
  .landing-page .hero__cta { flex-direction: column; align-items: stretch; }
  .landing-page .hero__cta .btn { width: 100%; }
  .landing-page .lesson-mock__body { padding: 24px 20px; }
  .landing-page .lesson-mock__ru { font-size: 22px; }
  .landing-page .author__big { font-size: 56px; }
  .landing-page .author__photo { float: none; width: 160px; height: 200px; margin: 0 0 20px; }
  .landing-page .nav__login,
  .landing-page .nav__user { display: none; }
  .landing-page details.faq__item summary { padding: 16px 18px; gap: 14px; font-size: 15px; }
  .landing-page .faq__a { padding: 0 18px 18px 50px; }
  .landing-page .faq__num { width: 24px; font-size: 10px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .landing-page *, .landing-page *::before, .landing-page *::after {
    animation-duration: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0s !important;
    scroll-behavior: auto !important;
  }
}

/* Focus */
.landing-page a:focus-visible,
.landing-page button:focus-visible,
.landing-page summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 3px;
}