/* ════════════════════════════════════════════════════════════
   VortexLearn · вариант B «Орбита»
   Продуктовый стиль: графит, один акцент — лайм, «жидкое стекло»
   (матовое стекло + светлый край + блик + мягкая тень + цветной
   ореол позади), пружинная анимация без резиновых отскоков.
   Inter Tight для заголовков, Inter для текста, JetBrains Mono
   для цифр. Подключается ПОСЛЕ style.css.
   ════════════════════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Inter+Tight:wght@500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --paper: #F4F5F7;
  --paper-2: #EBEDF0;
  --card: #FFFFFF;
  --ink: #0B0D12;
  --text: #1E222B;
  --text2: #5D6370;
  --label: #8A909C;
  --border: rgba(11,13,18,.12);
  --hairline: rgba(11,13,18,.07);
  --lime: #D4FF3A;
  --lime-ink: #0B0D12;
  --accent: #4F6B00;
  --accent-hover: #3E5500;
  --accent-light: rgba(150,200,0,.12);
  --ok: #2F7A3C;
  --ok-bg: #E6F4E2;
  --err: #D23C2E;
  --err-bg: #FCE8E5;
  --chat-bg: #F4F5F7;
  --bubble-ai: #FFFFFF;
  --bubble-ai-border: rgba(11,13,18,.08);
  --input-bg: #FFFFFF;
  --btn-ink: #0B0D12;
  --btn-ink-text: #FFFFFF;
  --night: #0A0C10;
  --night-2: #12151C;
  --night-3: #1A1E27;
  --font-display: 'Inter Tight', 'Inter', -apple-system, 'Segoe UI', sans-serif;
  --font-ui: 'Inter', -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Mono', monospace;
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --shadow-card: 0 1px 2px rgba(11,13,18,.04), 0 8px 24px -12px rgba(11,13,18,.12);
  --shadow-pop: 0 30px 80px -24px rgba(11,13,18,.35), 0 6px 18px rgba(11,13,18,.08);
  --spring: linear(0, .009, .035 2.1%, .141 4.4%, .723 12.9%, .938 16.7%, 1.017 19.4%, 1.03 22%, 1.02 25%, 1.002 33%, 1);
  --glass-bg: rgba(255,255,255,.07);
  --glass-rim: rgba(255,255,255,.16);
  /* рисунки репетитора */
  --svg-bg: #F7F8FA; --svg-ink: #1E222B; --svg-accent: #4F6B00; --svg-c2: #2F64C8; --svg-c3: #C2561C; --svg-soft: #E8F0CC; --svg-on-accent: #FFFFFF;
}
body.dark {
  --svg-bg: #10131A; --svg-ink: #E3E5EA; --svg-accent: #D4FF3A; --svg-c2: #7EB2FF; --svg-c3: #FF9F5A; --svg-soft: #253012; --svg-on-accent: #0B0D12;
  --paper: #0A0C10;
  --paper-2: #10131A;
  --card: #141821;
  --ink: #F5F6F8;
  --text: #E3E5EA;
  --text2: #9AA0AD;
  --label: #6E7480;
  --border: rgba(255,255,255,.12);
  --hairline: rgba(255,255,255,.07);
  --accent: #D4FF3A;
  --accent-hover: #E2FF73;
  --accent-light: rgba(212,255,58,.10);
  --ok: #8BE08F;
  --ok-bg: #16281A;
  --err: #FF8A7A;
  --err-bg: #34191A;
  --chat-bg: #0A0C10;
  --bubble-ai: #141821;
  --bubble-ai-border: rgba(255,255,255,.08);
  --input-bg: #10131A;
  --btn-ink: #D4FF3A;
  --btn-ink-text: #0B0D12;
  --shadow-card: 0 1px 0 rgba(255,255,255,.04) inset, 0 10px 30px -14px rgba(0,0,0,.7);
  --shadow-pop: 0 30px 80px -20px rgba(0,0,0,.8);
}

/* ── база ── */
body { font-size: 16px; line-height: 1.6; letter-spacing: -.006em; }
body::after { display: none; }                         /* без «бумажного» шума */
::selection { background: var(--lime); color: var(--lime-ink); }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; letter-spacing: -.035em; }
:focus-visible { outline: 2px solid var(--lime); outline-offset: 3px; }
body:not(.dark) :focus-visible { outline-color: var(--ink); }

/* «жидкое стекло»: матовое тело, светлый край, блик сверху, тень */
.glass {
  background: linear-gradient(180deg, rgba(255,255,255,.12), rgba(255,255,255,.04));
  -webkit-backdrop-filter: blur(22px) saturate(160%); backdrop-filter: blur(22px) saturate(160%);
  border: 1px solid var(--glass-rim);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.28), inset 0 -1px 0 rgba(255,255,255,.04), 0 30px 60px -20px rgba(0,0,0,.6);
}

/* ── логотип: лаймовый знак на графите ── */
.nav-orb, .auth-logo {
  background: #0B0D12 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 315.0 275.8'%3E%3Cpath d='M1.86 23.17A15.93 15.93 0 0 1 16.05 0.00L113.75 0.00A3.26 3.26 0 0 1 116.65 1.78L133.77 35.56A0.92 0.92 0 0 1 132.95 36.90L59.25 36.90A0.92 0.92 0 0 0 58.43 38.24L157.48 232.47A0.31 0.31 0 0 0 158.02 232.46L255.97 39.24A0.92 0.92 0 0 0 255.15 37.90L228.35 37.90A2.28 2.28 0 0 0 226.26 39.28L189.64 124.06A3.04 3.04 0 0 1 186.85 125.90L147.25 125.90A0.90 0.90 0 0 1 146.46 124.58L210.60 4.39A5.85 5.85 0 0 1 215.75 1.29L299.05 1.07A15.87 15.87 0 0 1 313.23 24.16L188.49 268.57A13.06 13.06 0 0 1 176.85 275.70L138.55 275.70A13.06 13.06 0 0 1 126.92 268.57Z' fill='%23D4FF3A'/%3E%3C/svg%3E") center 56% / 58% auto no-repeat;
  border-radius: 9px; box-shadow: inset 0 0 0 1px rgba(255,255,255,.1);
}
.nav-name { font-family: var(--font-display); font-weight: 700; font-size: 19px; letter-spacing: -.03em; }

/* ── шапка: стеклянная «пилюля» ── */
.site-nav { background: transparent; border-bottom: 0; -webkit-backdrop-filter: none; backdrop-filter: none; padding: 12px 16px 0; pointer-events: none; }
.site-nav .nav-inner {
  pointer-events: auto; max-width: 1180px; padding: 8px 8px 8px 18px; border-radius: 999px;
  background: color-mix(in srgb, var(--card) 72%, transparent);
  -webkit-backdrop-filter: blur(20px) saturate(170%); backdrop-filter: blur(20px) saturate(170%);
  border: 1px solid var(--border); box-shadow: 0 10px 30px -14px rgba(11,13,18,.25), inset 0 1px 0 rgba(255,255,255,.5);
}
body.dark .site-nav .nav-inner { box-shadow: 0 10px 30px -14px rgba(0,0,0,.8), inset 0 1px 0 rgba(255,255,255,.08); }
.nav-link { font-family: var(--font-ui); font-size: 14px; font-weight: 500; color: var(--text2); border-radius: 999px; padding: 8px 14px; }
.nav-link:hover { background: var(--hairline); color: var(--ink); }
.site-nav .nav-link.is-active, .app-nav .nav-link.is-active { color: var(--ink); background: var(--hairline); }
.nav-cta { border-radius: 999px; background: var(--lime); color: var(--lime-ink) !important; padding: 10px 20px; font-weight: 600; font-size: 14px; }
.nav-theme-btn, .icon-btn { border-radius: 999px; border-color: transparent; }
.nav-theme-btn:hover, .icon-btn:hover { background: var(--hairline); border-color: transparent; }
:root { --nav-h: 78px; }
/* главная: шапка поверх тёмного первого экрана */
.b-hp ~ * {}
body:has(.b-hp) .site-nav { position: fixed; left: 0; right: 0; }
body:has(.b-hp):not(.dark) .site-nav .nav-inner { background: rgba(20,24,33,.55); border-color: rgba(255,255,255,.12); box-shadow: inset 0 1px 0 rgba(255,255,255,.12); }
body:has(.b-hp):not(.dark) .site-nav .nav-link, body:has(.b-hp):not(.dark) .site-nav .nav-name, body:has(.b-hp):not(.dark) .nav-theme-btn { color: #E3E5EA; }
body:has(.b-hp):not(.dark) .site-nav .nav-link:hover { background: rgba(255,255,255,.08); }

/* ════════════ ГЛАВНАЯ ════════════ */
.b-hp { --w: 1180px; }
.b-hero {
  position: relative; overflow: hidden; isolation: isolate;
  background: var(--night); color: #E3E5EA; padding: 150px 24px 0;
  border-radius: 0 0 36px 36px;
}
.b-hero-bg { position: absolute; z-index: -1; right: -6%; top: 0; height: 100%; width: auto; aspect-ratio: 3 / 2; object-fit: cover; max-width: none; opacity: .95; -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 28%), linear-gradient(180deg, #000 62%, transparent 94%); -webkit-mask-composite: source-in; mask-image: linear-gradient(90deg, transparent 0, #000 28%), linear-gradient(180deg, #000 62%, transparent 94%); mask-composite: intersect; }
.b-hero::before { content: ""; position: absolute; z-index: -1; inset: auto -10% -30% 30%; height: 70%; background: radial-gradient(closest-side, rgba(212,255,58,.10), transparent); }
.b-hero-in { max-width: var(--w); margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .85fr); gap: 48px; align-items: center; }
.b-chip { display: inline-flex; align-items: center; gap: 10px; margin: 0 0 26px; padding: 7px 14px; border-radius: 999px; font-family: var(--font-mono); font-size: 13px; color: #C9CDD6; border: 1px solid rgba(255,255,255,.14); background: rgba(255,255,255,.04); }
.b-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--lime); }
.b-h1 { font-family: var(--font-display); font-weight: 600; color: #F5F6F8; font-size: clamp(44px, 5.4vw, 80px); line-height: .98; letter-spacing: -.05em; margin: 0 0 28px; }
.b-line { display: block; overflow: hidden; padding-bottom: .06em; }
.b-line > span { display: inline-block; }
.b-h1 em { font-style: normal; color: var(--lime); }
.b-lead { font-size: 19px; line-height: 1.6; color: #A9AFBB; max-width: 32em; margin: 0 0 34px; }
.b-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.b-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 26px; border-radius: 999px; border: 0; cursor: pointer;
  background: var(--lime); color: var(--lime-ink); font-family: var(--font-ui); font-size: 16px; font-weight: 600; text-decoration: none;
  transition: transform .6s var(--spring), background .2s;
}
.b-btn:hover { transform: scale(1.035); background: #E2FF73; }
.b-btn:active { transform: scale(.98); }
.b-btn span { transition: transform .6s var(--spring); }
.b-btn:hover span { transform: translateX(4px); }
.b-btn-glass { background: rgba(255,255,255,.08); color: #F5F6F8; border: 1px solid rgba(255,255,255,.16); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.b-btn-glass:hover { background: rgba(255,255,255,.14); }
.b-btn-line { background: transparent; color: var(--ink); border: 1px solid var(--border); }
.b-btn-line:hover { background: var(--hairline); }
.b-small { margin: 18px 0 0; font-size: 14px; color: #7D8390; }

/* демо: вопрос → загрузка → шаги → галочка (одна форма меняет состояние) */
.b-demo { border-radius: 24px; padding: 18px 20px 20px; color: #E3E5EA; position: relative; }
.b-demo-top { display: flex; align-items: center; gap: 6px; margin-bottom: 18px; }
.b-demo-dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.18); }
.b-demo-t { margin-left: 10px; font-family: var(--font-mono); font-size: 12.5px; color: #9AA0AD; }
.b-q { margin-left: auto; width: fit-content; padding: 11px 16px; border-radius: 16px 16px 4px 16px; background: var(--lime); color: var(--lime-ink); font-weight: 600; font-size: 15.5px; font-family: var(--font-mono); letter-spacing: -.02em; }
.b-morph { display: flex; gap: 5px; padding: 14px 16px; margin-top: 14px; width: fit-content; border-radius: 4px 16px 16px 16px; background: rgba(255,255,255,.08); }
.b-morph i { width: 7px; height: 7px; border-radius: 50%; background: #C9CDD6; }
.b-steps { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 8px; }
.b-steps li { display: flex; gap: 12px; align-items: flex-start; padding: 12px 14px; border-radius: 14px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.08); font-size: 15px; line-height: 1.45; }
.b-steps span { flex: none; width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; font-family: var(--font-mono); font-size: 12px; font-weight: 600; background: rgba(212,255,58,.14); color: var(--lime); }
.b-check { display: flex; align-items: center; gap: 10px; margin-top: 14px; padding: 12px 14px; border-radius: 14px; background: rgba(212,255,58,.12); color: var(--lime); font-weight: 600; font-size: 15px; }
.b-check svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.b-stats {
  max-width: var(--w); margin: 72px auto 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid rgba(255,255,255,.1); padding: 28px 0 40px;
}
.b-stats b { display: block; font-family: var(--font-mono); font-weight: 500; font-size: clamp(28px, 3vw, 40px); letter-spacing: -.04em; color: #F5F6F8; line-height: 1.1; }
.b-stats span { display: block; font-size: 14px; color: #8A909C; margin-top: 6px; }

/* секции */
.b-sec { max-width: var(--w); margin: 0 auto; padding: 112px 24px 0; }
.b-eyebrow { font-family: var(--font-mono); font-size: 13px; color: var(--text2); margin: 0 0 14px; }
.b-eyebrow::before { content: "● "; color: var(--accent); }
body.dark .b-eyebrow::before { color: var(--lime); }
.b-h2 { font-family: var(--font-display); font-weight: 600; color: var(--ink); font-size: clamp(32px, 4vw, 56px); line-height: 1.02; letter-spacing: -.045em; margin: 0 0 40px; max-width: 16em; text-wrap: balance; }

/* бенто: тёмные плитки в обеих темах */
.b-bento { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); grid-auto-rows: minmax(260px, auto); gap: 14px; }
.b-tile {
  position: relative; overflow: hidden; isolation: isolate; display: flex; flex-direction: column; justify-content: flex-end; gap: 8px;
  padding: 28px; border-radius: 24px; background: var(--night-2); color: #C9CDD6; text-decoration: none;
  border: 1px solid rgba(255,255,255,.06); transition: transform .7s var(--spring);
}
.b-tile::after { content: ""; position: absolute; inset: 0; border-radius: inherit; box-shadow: inset 0 1px 0 rgba(255,255,255,.08); pointer-events: none; }
.b-tile:hover { transform: translateY(-4px) scale(1.01); }
.b-tile h3 { color: #F5F6F8; font-size: 26px; line-height: 1.1; margin: 0; letter-spacing: -.035em; }
.b-tile p { margin: 0; font-size: 15px; line-height: 1.55; color: #9AA0AD; max-width: 30em; }
.b-ic3d { position: absolute; z-index: -1; top: -6%; right: -6%; width: 62%; height: auto; mix-blend-mode: screen; transition: transform 1s var(--spring); }
.b-tile:hover .b-ic3d { transform: rotate(-6deg) scale(1.05); }
.b-tag { align-self: flex-start; margin-bottom: auto; font-family: var(--font-mono); font-size: 12.5px; color: var(--lime); padding: 5px 11px; border-radius: 999px; border: 1px solid rgba(212,255,58,.3); }
.b-num { margin-bottom: auto; font-family: var(--font-mono); font-size: 56px; font-weight: 500; letter-spacing: -.06em; color: #F5F6F8; line-height: 1; }
.b-more { margin-top: 10px; color: var(--lime); font-weight: 600; font-size: 15px; }
.b-t-tutor { grid-column: span 4; grid-row: span 2; background: radial-gradient(120% 90% at 85% 10%, #1D2430 0, var(--night-2) 60%); }
.b-t-tutor .b-ic3d { width: 52%; top: -2%; right: 0; }
.b-t-tutor h3 { font-size: 40px; }
.b-t-books { grid-column: span 2; }
.b-t-exams { grid-column: span 2; }
.b-t-tests { grid-column: span 3; background: var(--lime); color: var(--lime-ink); }
.b-t-tests h3, .b-t-tests .b-num { color: var(--lime-ink); }
.b-t-tests p { color: rgba(11,13,18,.7); }
.b-bar { height: 8px; border-radius: 999px; background: rgba(11,13,18,.12); margin-top: 12px; overflow: hidden; }
.b-bar i { display: block; height: 100%; width: var(--w); background: var(--lime-ink); border-radius: inherit; }
.b-t-langs { grid-column: span 3; }
.b-t-books .b-ic3d, .b-t-exams .b-ic3d, .b-t-langs .b-ic3d { width: 56%; top: -10%; right: -8%; }
.b-langs { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.b-langs i { font-style: normal; font-family: var(--font-mono); font-size: 12.5px; padding: 5px 10px; border-radius: 8px; background: rgba(255,255,255,.07); color: #E3E5EA; }

/* предметы: чипы с иконками */
.b-split-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: end; margin-bottom: 36px; }
.b-split-head .b-h2 { margin: 0; }
.b-split-head p { margin: 0; font-size: 17px; color: var(--text2); max-width: 26em; }
.b-hp .hp-subjects { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; border: 0; }
.b-hp .hp-subjects a {
  display: flex; flex-direction: column; justify-content: flex-start; align-items: flex-start; gap: 4px; padding: 18px; height: 100%;
  border-radius: 18px; background: var(--card); border: 1px solid var(--hairline); color: var(--text); text-decoration: none;
  transition: transform .6s var(--spring), border-color .2s, background .2s;
}
.b-hp .hp-subjects a:hover { transform: translateY(-3px); border-color: var(--ink); }
.b-hp .hp-subjects .sj-ic { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: var(--paper-2); color: var(--ink); margin-bottom: 14px; transition: background .2s, color .2s; }
.b-hp .hp-subjects a:hover .sj-ic { background-color: var(--lime); color: var(--lime-ink); }
.b-hp .hp-subjects .sj-ic .ic { width: 20px; height: 20px; }
.b-hp .hp-subjects b { font-family: var(--font-display); font-size: 18px; font-weight: 600; color: var(--ink); letter-spacing: -.02em; }
.b-hp .hp-subjects span { font-size: 13px; line-height: 1.4; color: var(--text2); text-align: left; }

/* тарифы */
.b-plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.b-plan { display: flex; flex-direction: column; padding: 30px; border-radius: 24px; background: var(--card); border: 1px solid var(--hairline); }
.b-plan-name { margin: 0 0 18px; font-family: var(--font-mono); font-size: 14px; color: var(--text2); display: flex; align-items: center; gap: 10px; }
.b-plan-sum { margin: 0 0 22px; font-family: var(--font-display); font-weight: 600; font-size: 52px; letter-spacing: -.05em; color: var(--ink); line-height: 1; }
.b-plan-sum small { display: block; margin-top: 10px; font-family: var(--font-ui); font-size: 14px; font-weight: 500; letter-spacing: 0; color: var(--text2); }
.b-plan ul { list-style: none; margin: 0 0 26px; padding: 0; flex: 1; }
.b-plan li { padding: 9px 0 9px 28px; border-top: 1px solid var(--hairline); font-size: 15px; position: relative; }
.b-plan li::before { content: ""; position: absolute; left: 2px; top: 16px; width: 10px; height: 6px; border-left: 2px solid var(--ink); border-bottom: 2px solid var(--ink); transform: rotate(-45deg); }
.b-plan .b-btn { width: 100%; }
.b-plan.is-best { background: var(--night); color: #C9CDD6; border-color: transparent; }
.b-plan.is-best .b-plan-sum { color: #F5F6F8; }
.b-plan.is-best .b-plan-name, .b-plan.is-best small { color: #9AA0AD; }
.b-plan.is-best li { border-top-color: rgba(255,255,255,.08); }
.b-plan.is-best li::before { border-color: var(--lime); }
.b-badge { font-family: var(--font-ui); font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: var(--lime); color: var(--lime-ink); }
body.dark .b-plan.is-best { background: var(--night-3); border: 1px solid rgba(212,255,58,.45); }

/* вопросы */
.b-faq { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 40px; }
.b-faq-list { display: grid; gap: 10px; }
.b-faq-list details { border-radius: 18px; background: var(--card); border: 1px solid var(--hairline); padding: 0 22px; transition: background .2s; }
.b-faq-list summary { cursor: pointer; list-style: none; padding: 20px 36px 20px 0; font-family: var(--font-display); font-size: 19px; font-weight: 600; letter-spacing: -.02em; color: var(--ink); position: relative; }
.b-faq-list summary::-webkit-details-marker { display: none; }
.b-faq-list summary::after { content: ""; position: absolute; right: 0; top: 50%; width: 24px; height: 24px; margin-top: -12px; border-radius: 50%; background: var(--paper-2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 7v10M7 12h10' stroke='%230B0D12' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E") center / 16px no-repeat; transition: transform .6s var(--spring); }
.b-faq-list details[open] summary::after { transform: rotate(45deg); background-color: var(--lime); }
.b-faq-list p { margin: 0 0 20px; font-size: 16px; line-height: 1.65; color: var(--text2); }
.b-faq-list a { color: var(--ink); }

.b-final { position: relative; overflow: hidden; isolation: isolate; max-width: var(--w); margin: 112px auto 80px; padding: 96px 56px; border-radius: 32px; background: var(--night); color: #C9CDD6; }
.b-final-bg { position: absolute; z-index: -1; right: -10%; top: -20%; width: 70%; height: auto; opacity: .9; }
.b-final-in { max-width: 560px; }
.b-final .b-h2 { color: #F5F6F8; margin-bottom: 16px; }
.b-final p { font-size: 18px; color: #9AA0AD; margin: 0 0 32px; }


/* ── подвал ── */
.site-footer { border-top: 1px solid var(--hairline); }
.footer-inner, .footer-legal-row, .footer-bottom, .footer-req { max-width: 1180px; }
.footer-inner { padding: 56px 24px 36px; }
.footer-legal-row, .footer-bottom, .footer-req { padding-left: 24px; padding-right: 24px; }
.footer-col h4 { font-family: var(--font-mono); font-size: 12.5px; color: var(--label); }
.footer-col a { font-size: 15px; }
.footer-col a:hover, .footer-legal-row a:hover { color: var(--ink); }
.footer-bottom, .footer-req { font-family: var(--font-mono); font-size: 12px; }

/* ════════════ ВХОД И РЕГИСТРАЦИЯ ════════════ */
#screen-auth { padding: 0 !important; justify-content: stretch !important; align-items: stretch !important; background: var(--night); }
.auth-split { position: relative; isolation: isolate; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); min-height: 100vh; width: 100%; }
.auth-split::before { content: ""; position: absolute; z-index: -1; inset: 0 30% 0 0; background: url('../img/b-hero.jpg') 70% center / cover no-repeat; -webkit-mask-image: linear-gradient(90deg, #000 40%, transparent); mask-image: linear-gradient(90deg, #000 40%, transparent); opacity: .9; }
.auth-aside { display: flex; align-items: flex-end; padding: 56px; color: #C9CDD6; }
.auth-aside-k { font-family: var(--font-mono); font-size: 13px; color: var(--lime); margin: 0 0 14px; }
.auth-aside-h { font-family: var(--font-display); font-size: clamp(36px, 4vw, 56px); font-weight: 600; letter-spacing: -.045em; line-height: 1; color: #F5F6F8; margin: 0 0 22px; max-width: 11em; }
.auth-aside-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.auth-aside-list li { padding: 8px 14px; border-radius: 999px; font-size: 14px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.auth-split > .auth-card {
  align-self: center; justify-self: center; margin: 40px 32px; max-width: 440px; width: calc(100% - 64px);
  background: rgba(20,24,33,.62); -webkit-backdrop-filter: blur(28px) saturate(160%); backdrop-filter: blur(28px) saturate(160%);
  border: 1px solid rgba(255,255,255,.14); border-radius: 28px; padding: 40px 36px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.18), 0 40px 80px -30px rgba(0,0,0,.8);
  color: #E3E5EA;
  --ink: #F5F6F8; --text: #E3E5EA; --text2: #9AA0AD; --label: #7D8390; --border: rgba(255,255,255,.14); --input-bg: rgba(255,255,255,.05); --paper: rgba(255,255,255,.04);
}
.auth-logo { width: 48px; height: 48px; border-radius: 14px; }
.auth-title { font-family: var(--font-display); font-size: 32px; letter-spacing: -.04em; }
.auth-tabs { border-radius: 999px; padding: 4px; background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.1); }
.auth-tab { border-radius: 999px; padding: 10px; font-size: 14.5px; transition: background .4s var(--spring), color .2s; }
.auth-tab.active { background: var(--lime); color: var(--lime-ink); }
.field-label { font-family: var(--font-ui); font-size: 13.5px; font-weight: 500; }
.auth-input { border-radius: 14px; padding: 14px 16px; font-size: 16px; }
.auth-input:focus { border-color: var(--lime); box-shadow: 0 0 0 4px rgba(212,255,58,.15); }
body:not(.dark) .auth-input:focus { border-color: var(--ink); box-shadow: 0 0 0 4px rgba(11,13,18,.08); }
.auth-split .auth-input:focus { border-color: var(--lime) !important; box-shadow: 0 0 0 4px rgba(212,255,58,.15) !important; }
.auth-btn, .welcome-btn { border-radius: 999px; padding: 15px; background: var(--lime); color: var(--lime-ink); font-size: 16px; transition: transform .6s var(--spring), background .2s; }
.auth-btn:hover, .welcome-btn:hover:not(:disabled) { opacity: 1; transform: scale(1.02); background: #E2FF73; }
.auth-home-link { font-family: var(--font-mono); font-size: 13px; }
.auth-home-link:hover { color: var(--lime); }
#screen-onboarding-grade, #screen-onboarding-subjects { background: var(--night); }
#screen-onboarding-grade .subjects-card, #screen-onboarding-subjects .subjects-card {
  background: rgba(20,24,33,.8); border: 1px solid rgba(255,255,255,.12); border-radius: 28px; color: #E3E5EA;
  --ink: #F5F6F8; --text: #E3E5EA; --text2: #9AA0AD; --label: #7D8390; --border: rgba(255,255,255,.14); --card: rgba(255,255,255,.04);
}
.onb-grade-opt { font-family: var(--font-mono); font-size: 18px; border-radius: 14px; padding: 16px 4px; }
.onb-grade-opt.selected, .onb-subject-opt.selected { background: var(--lime); color: var(--lime-ink); }
.onb-subject-opt { border-radius: 999px; padding: 10px 18px; font-size: 14.5px; }

/* ════════════ КАБИНЕТ ════════════ */
#screen-subjects { padding: 28px 24px 64px !important; }
#screen-subjects .subjects-card.dash { max-width: 1180px !important; width: 100%; background: transparent; border: 0; box-shadow: none; padding: 0 !important; }
.dash-head { align-items: center; margin-bottom: 20px; }
.dash-kicker { font-family: var(--font-mono); font-size: 13px; color: var(--text2); margin: 0 0 6px; }
.subjects-greeting { font-family: var(--font-display); font-size: clamp(34px, 4vw, 52px); font-weight: 600; letter-spacing: -.045em; line-height: 1; }
.dash-meta { margin: 12px 0 0; font-size: 15px; color: var(--text2); }
.dash-meta a { color: var(--text2); }
.dash-dot { margin: 0 10px; color: var(--label); }
.streak-badge { border-radius: 999px; padding: 10px 18px; background: var(--night); color: #F5F6F8; border: 0; font-family: var(--font-mono); font-size: 15px; gap: 8px; }
.streak-badge .ic { width: 16px; height: 16px; color: var(--lime); }
.streak-cap { font-family: var(--font-ui); font-weight: 500; color: #9AA0AD; font-size: 13.5px; }
.topbar .streak-badge { background: var(--paper-2); color: var(--ink); }
.topbar .streak-badge .ic { color: var(--accent); }
.topbar .streak-cap { display: none; }
.dash-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(300px, 1fr); gap: 14px; align-items: stretch; }
.dash-block { background: var(--card); border: 1px solid var(--hairline); border-radius: 24px; padding: 26px; }
#vx-continue-box:not(:empty) { margin-bottom: 14px; }
.dash-block-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.dash-block-head .subjects-sub { margin: 0; font-family: var(--font-display); font-size: 24px; font-weight: 600; color: var(--ink); letter-spacing: -.03em; }
.dash-hint { font-family: var(--font-mono); font-size: 12.5px; color: var(--label); }
#screen-subjects .subjects-list { display: grid !important; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; border-top: 0; }
.subject-item { border: 1px solid var(--hairline); border-radius: 16px; padding: 4px 8px 4px 14px; background: var(--paper); transition: transform .6s var(--spring), border-color .2s; }
.subject-item:hover { background: var(--paper); padding-left: 14px; border-color: var(--ink); transform: translateY(-2px); }
.subject-item-left { gap: 12px; padding: 12px 0; }
.subject-icon { width: 38px; height: 38px; border-radius: 12px; background: var(--card); color: var(--ink); display: grid; place-items: center; }
.subject-item:hover .subject-icon { background: var(--lime); color: var(--lime-ink); }
.subject-name { font-family: var(--font-display); font-size: 18px; font-weight: 600; letter-spacing: -.02em; }
.add-subject-btn { border-radius: 16px; margin-top: 12px; padding: 14px; font-size: 14.5px; }
.add-subject-btn:hover { border-color: var(--ink); background: var(--paper); }
.subject-option { border-radius: 999px; }
.subject-option:hover { background: var(--lime); color: var(--lime-ink); border-color: transparent; }
.dash-side { display: flex; }
.dash-side #vx-today-box { flex: 1; background: var(--night); color: #C9CDD6; border-radius: 24px; padding: 26px; position: relative; overflow: hidden; }
.dash-side #vx-today-box::before { content: ""; position: absolute; right: -80px; top: -80px; width: 220px; height: 220px; border-radius: 50%; background: radial-gradient(closest-side, rgba(212,255,58,.16), transparent); }
.dash-side .goal-ring { margin-top: 0 !important; position: relative; }
.goal-ring .ring-wrap { width: 76px; height: 76px; }
.goal-ring svg { width: 76px; height: 76px; }
.vx-ring-bg { stroke: rgba(255,255,255,.1); }
.vx-ring-fill { stroke: var(--lime); }
body:not(.dark) .chat-app .vx-ring-fill { stroke: var(--accent); }
.dash-side .goal-ring .vx-ring-txt { font-family: var(--font-mono); font-size: 15px; color: #F5F6F8; }
.dash-side .goal-ring .goal-cap { color: #9AA0AD; }
.dash-side .goal-ring .goal-cap b { font-family: var(--font-display); font-size: 20px; color: #F5F6F8; letter-spacing: -.02em; }
.dash-side .vx-tiles { grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 22px; }
.dash-side .vx-tile { border: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.05); border-radius: 16px; padding: 14px; }
.dash-side .vx-tile:hover { background: rgba(255,255,255,.09); border-color: rgba(255,255,255,.16); }
.dash-side .vx-tile .vt-n { font-family: var(--font-mono); font-size: 28px; font-weight: 500; color: #F5F6F8; letter-spacing: -.04em; }
.dash-side .vx-tile .vt-c { color: #9AA0AD; font-size: 12.5px; }
.dash-side .vx-tile.accent { border-color: rgba(212,255,58,.45); }
.dash-side .vx-tile.accent .vt-n { color: var(--lime); }
.vx-continue { border-radius: 24px; border: 0; background: var(--lime); color: var(--lime-ink); padding: 22px 26px; transition: transform .6s var(--spring); }
.vx-continue:hover { background: var(--lime); transform: scale(1.01); }
.vx-continue .vc-kicker { color: var(--lime-ink); font-family: var(--font-mono); opacity: .7; }
.vx-continue .vc-title { color: var(--lime-ink); font-family: var(--font-display); font-size: 24px; letter-spacing: -.03em; }
.vx-continue .vc-sub { color: rgba(11,13,18,.7); }
.vx-continue .vc-go { color: var(--lime-ink); }
.dash-sections { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-top: 14px; }
.dash-sec { display: flex; flex-direction: column; gap: 40px; padding: 24px; border-radius: 24px; background: var(--card); border: 1px solid var(--hairline); text-decoration: none; color: var(--text); transition: transform .6s var(--spring), border-color .2s; }
.dash-sec:hover { transform: translateY(-3px); border-color: var(--ink); }
.ds-ic { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; background: var(--night); color: var(--lime); }
body.dark .ds-ic { background: var(--paper-2); }
.ds-ic .ic { width: 22px; height: 22px; }
.ds-txt b { display: block; font-family: var(--font-display); font-size: 21px; font-weight: 600; color: var(--ink); letter-spacing: -.03em; }
.ds-txt small { display: block; margin-top: 6px; font-size: 14px; line-height: 1.45; color: var(--text2); }
.onb-done { border-radius: 24px; background: var(--card); border: 1px solid var(--lime); padding: 22px 26px; }
.onb-done-tick { background: var(--lime); color: var(--lime-ink); }

/* ════════════ ТАРИФЫ ════════════ */
.pricing-wrap { max-width: 1180px; padding-left: 24px; padding-right: 24px; }
.course-hero { border-bottom: 0; }
.course-hero .eyebrow { font-family: var(--font-mono); font-size: 13px; color: var(--text2); }
.course-hero .eyebrow::before { content: "● "; color: var(--accent); }
.course-hero h1, .pricing-wrap .pr-hero h1 { font-family: var(--font-display); font-size: clamp(40px, 5.4vw, 76px); font-weight: 600; letter-spacing: -.05em; line-height: 1; }
.pricing-wrap .pr-lead { font-size: 18px; }
#plan-now { font-size: 15px; color: var(--text2); }
.pricing-wrap .period-switch { border-radius: 999px; padding: 5px; background: var(--card); border-color: var(--hairline); }
.period-btn { border-radius: 999px; padding: 10px 18px; font-size: 14.5px; transition: background .5s var(--spring), color .2s; }
.period-btn.active { background: var(--night); color: #F5F6F8; }
body.dark .period-btn.active { background: var(--lime); color: var(--lime-ink); }
.period-btn .period-tag { color: var(--accent); }
.period-btn.active .period-tag { color: var(--lime); opacity: 1; }
body.dark .period-btn.active .period-tag { color: var(--lime-ink); }
.pricing-wrap .plan-grid { gap: 14px; margin-top: 28px; }
.plan-card, .pricing-wrap .plan-card { border: 1px solid var(--hairline); border-radius: 24px; background: var(--card); padding: 30px 28px !important; }
.pricing-wrap .plan-card:nth-child(2) {
  background: var(--night); color: #C9CDD6; border-color: transparent;
  --ink: #F5F6F8; --text: #E3E5EA; --text2: #9AA0AD; --hairline: rgba(255,255,255,.08); --border: rgba(255,255,255,.14);
}
body.dark .pricing-wrap .plan-card:nth-child(2) { background: var(--night-3); border: 1px solid rgba(212,255,58,.45); }
.plan-card.is-current { box-shadow: none; border-color: var(--ink); }
.plan-card h3, .pricing-wrap .plan-card h3 { font-family: var(--font-mono); font-size: 15px !important; font-weight: 500; letter-spacing: 0; color: var(--text2); }
.plan-card .plan-sum, .plan-card .plan-sum.plan-sum-big, .pricing-wrap .plan-card .plan-sum.plan-sum-big { font-family: var(--font-display); font-weight: 600; letter-spacing: -.05em; }
.pricing-wrap .plan-card .plan-sum.plan-sum-big { font-size: clamp(44px, 4.6vw, 64px); }
.plan-card .plan-hot { background: var(--lime); color: var(--lime-ink); }
.plan-card li { font-size: 15px !important; padding-top: 2px; }
.plan-card li::before { content: ""; top: .55em; width: 10px; height: 6px; border-left: 2px solid var(--ink); border-bottom: 2px solid var(--ink); transform: rotate(-45deg); }
.pricing-wrap .plan-card:nth-child(2) li::before { border-color: var(--lime); }
.plan-card li.no::before { border: 0; border-top: 2px solid var(--label); width: 10px; height: 0; transform: none; top: .8em; }
.plan-card .pay-btn { border-radius: 999px; background: var(--ink); border-color: var(--ink); color: var(--card); transition: transform .6s var(--spring); }
.plan-card .pay-btn:hover { background: var(--ink); border-color: var(--ink); color: var(--card); transform: scale(1.02); }
.pricing-wrap .plan-card:nth-child(2) .pay-btn { background: var(--lime); border-color: var(--lime); color: var(--lime-ink); }
.plan-card .trial-btn { border-radius: 999px; border-color: var(--border); color: var(--ink); }
.plan-card .trial-btn:hover { background: rgba(255,255,255,.08); }
.plan-badge { background: var(--lime); color: var(--lime-ink); border-color: transparent; font-family: var(--font-ui); }
.pr-trust li { border-style: solid; border-color: var(--hairline); border-radius: 16px; background: var(--card); font-size: 14px !important; }
.course-card { border-radius: 24px; border-color: var(--hairline); box-shadow: none; padding: 30px !important; }
.pr-h { font-family: var(--font-display); font-size: 26px; letter-spacing: -.035em; }
.pr-p { font-size: 15.5px; line-height: 1.75; }
.pr-seo { border-top: 0; }
.pr-seo h2 { font-size: clamp(30px, 3.4vw, 46px); letter-spacing: -.045em; }
.pr-faq-item { border-radius: 18px; border-color: var(--hairline); margin-bottom: 10px; }
.pr-faq-item summary { font-family: var(--font-display); font-size: 18px; letter-spacing: -.02em; padding: 18px 20px; }
.pr-faq-item summary::after { color: var(--ink); }
.modal-card { border-radius: 24px; }
.modal-title { font-family: var(--font-display); letter-spacing: -.03em; }

/* ════════════ ИИ-РЕПЕТИТОР ════════════ */
#screen-welcome { background: radial-gradient(60% 50% at 50% 40%, var(--paper-2), var(--paper)); }
.welcome-card { border-radius: 28px; border: 1px solid var(--hairline); background: var(--card); box-shadow: var(--shadow-pop); padding: 52px 44px; max-width: 520px; }
.welcome-emoji { width: 76px; height: 76px; margin: 0 auto 24px; border-radius: 22px; align-items: center; background: var(--night); color: var(--lime); }
.welcome-emoji .ic { width: 36px; height: 36px; color: var(--lime); }
.welcome-title { font-family: var(--font-display); font-size: 34px; letter-spacing: -.045em; line-height: 1.05; }
.welcome-text { font-size: 16.5px; }
.chat-app { border-radius: 24px; border-color: var(--hairline); box-shadow: var(--shadow-card); }
.topbar-subject { font-family: var(--font-display); font-size: 20px; letter-spacing: -.03em; }
.topbar-subject .ic { color: var(--ink); }
.back-btn { border-radius: 999px; border-color: var(--hairline); }
@media (min-width: 900px) {
  #screen-chat .chat-side { background: var(--paper); }
  #screen-chat .stabs-bar::before, #screen-chat .qbtns::before { font-family: var(--font-mono); font-weight: 500; font-size: 12px; color: var(--label); }
  #screen-chat .stab, #screen-chat .qbtn { border-radius: 14px; font-size: 14.5px; padding: 11px 14px; }
  #screen-chat .chat-main > .chat { padding: 28px 40px; }
  #screen-chat .bubble { font-size: 15.5px; }
}
.stab { border-radius: 999px; }
.stab.active { background: var(--night); color: var(--lime); }
body.dark .stab.active { background: var(--lime); color: var(--lime-ink); }
.qbtn { background: var(--card); border-color: var(--hairline); color: var(--text); }
.qbtn:hover { border-color: var(--ink); color: var(--ink); }
.msg.ai .bubble { background: var(--card); border: 1px solid var(--hairline); border-radius: 6px 20px 20px 20px; box-shadow: var(--shadow-card); }
.msg.user .bubble { background: var(--night); color: #F5F6F8; border-radius: 20px 20px 6px 20px; }
body.dark .msg.user .bubble { background: var(--lime); color: var(--lime-ink); }
.input-area { background: var(--card); }
.input-area textarea { border-radius: 18px; padding: 12px 16px; }
.input-area textarea:focus { border-color: var(--ink); box-shadow: 0 0 0 4px var(--hairline); }
.sbtn { border-radius: 14px; background: var(--lime); color: var(--lime-ink); transition: transform .6s var(--spring); }
.sbtn:hover { opacity: 1; transform: scale(1.06); }
.photo-btn { background: var(--paper-2); color: var(--text); }
.quiz-start-btn, .quiz-check-btn, .done-btn { border-radius: 999px; }
.typing .dot { background: var(--ink); }

/* ════════════ АДМИНКА ════════════ */
body .adm-wrap { max-width: 1180px; padding: 36px 24px 72px; }
body .adm-wrap h1 { font-size: 48px !important; letter-spacing: -.05em; }
body .adm-wrap h2 { font-size: 30px !important; letter-spacing: -.04em; }
body .adm-wrap h3 { font-family: var(--font-mono); font-weight: 500; font-size: 12.5px !important; color: var(--label) !important; }
body .st-grid { gap: 10px; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); }
body .st-tile { border-radius: 18px; border-color: var(--hairline); padding: 18px; }
body .st-tile b { font-family: var(--font-mono); font-weight: 500; font-size: 32px; letter-spacing: -.04em; }
body .st-tile.is-main { background: var(--night); border-color: transparent; }
body .st-tile.is-main b { color: var(--lime); }
body .st-tile.is-main span { color: #9AA0AD; }
body .st-col i { background: var(--ink); opacity: 1; border-radius: 6px 6px 2px 2px; }
body.dark .st-col i { background: var(--lime); }
body .st-col:last-child i { background: var(--lime); }
body .adm-table th { font-family: var(--font-mono); text-transform: none; letter-spacing: 0; font-weight: 500; font-size: 12px; }
body .adm-table td { font-size: 14px; }
body .adm-actions button, body .adm-actions select { border-radius: 999px; padding: 6px 12px; }
body .adm-actions button:hover { border-color: var(--ink); color: var(--ink); }
body .adm-search input { border-radius: 14px; }
.quiz-check-btn { background: var(--ink); color: var(--card); }
body.dark .quiz-check-btn { background: var(--lime); color: var(--lime-ink); }
.quiz-nav-btn { border-radius: 999px; }
.plan-badge.is-pro { border-color: transparent; background: var(--lime); color: var(--lime-ink); }
.plan-badge.is-max { border-color: transparent; background: var(--night); color: var(--lime); }

/* ════════════ ТЕЛЕФОН И ПЛАНШЕТ ════════════ */
@media (max-width: 1100px) {
  .b-bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .b-t-tutor { grid-column: span 2; grid-row: span 1; min-height: 380px; }
  .b-t-books, .b-t-exams, .b-t-tests, .b-t-langs { grid-column: span 1; }
  .b-hp .hp-subjects { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .dash-sections { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .b-hero { padding-top: 120px; }
  .b-hero-in { grid-template-columns: minmax(0, 1fr); }
  .b-hero-bg { opacity: .5; right: -40%; }
  .b-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 20px; }
  .b-split-head, .b-faq { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .b-plans { grid-template-columns: minmax(0, 1fr); }
  .dash-grid { grid-template-columns: minmax(0, 1fr); }
  .auth-split { grid-template-columns: minmax(0, 1fr); }
  .auth-aside { display: none; }
  .auth-split::before { inset: 0; -webkit-mask-image: none; mask-image: none; opacity: .5; }
  .auth-split > .auth-card { margin: 32px auto; }
}
@media (max-width: 600px) {
  .site-nav { padding: 8px 8px 0; }
  .site-nav .nav-inner { padding: 6px 6px 6px 12px; }
  .site-nav .nav-name { display: none; }
  .b-hero { padding: 100px 16px 0; border-radius: 0 0 24px 24px; }
  .b-h1 { font-size: 46px; }
  .b-lead { font-size: 17px; }
  .b-btn { flex: 1 1 100%; }
  .b-demo { padding: 14px; }
  .b-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 48px; }
  .b-stats div:last-child { grid-column: 1 / -1; }
  .b-sec { padding: 80px 16px 0; }
  .b-bento { grid-template-columns: minmax(0, 1fr); grid-auto-rows: auto; }
  .b-t-tutor, .b-t-books, .b-t-exams, .b-t-tests, .b-t-langs { grid-column: auto; min-height: 280px; }
  .b-t-tutor h3 { font-size: 32px; }
  .b-hp .hp-subjects { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .b-final { margin: 80px 16px 48px; padding: 56px 24px; border-radius: 24px; }
  .b-final-bg { width: 120%; right: -50%; opacity: .5; }
  #screen-subjects { padding: 16px 12px 48px !important; }
  #screen-subjects .subjects-list { grid-template-columns: 1fr; }
  .dash-block { padding: 18px; border-radius: 20px; }
  .dash-hint { display: none; }
  .dash-sections { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .dash-sec { flex-direction: row; align-items: center; gap: 16px; padding: 16px; }
  .dash-side .vx-tiles { grid-template-columns: repeat(3, 1fr); }
  .dash-side .vx-tiles > :last-child:nth-child(odd) { grid-column: auto; }
  .footer-inner { padding: 40px 16px 28px; gap: 28px; }
  .footer-legal-row, .footer-bottom, .footer-req { padding-left: 16px; padding-right: 16px; }
  .pricing-wrap { padding-left: 14px; padding-right: 14px; }
  .auth-split > .auth-card { padding: 30px 22px; width: calc(100% - 28px); margin: 20px auto; }
}


/* 3D-иконки предметов (kie): стекло на графите */
.b-hp .hp-subjects .sj-ic { width: 64px; height: 64px; border-radius: 18px; background: #000 center / cover no-repeat; box-shadow: inset 0 0 0 1px rgba(255,255,255,.08); }
.b-hp .hp-subjects .sj-ic .ic { display: none; }
.b-hp .hp-subjects a:hover .sj-ic { background-color: #000; transform: rotate(-6deg) scale(1.06); }
.b-hp .hp-subjects .sj-ic { transition: transform .6s var(--spring); }
.b-hp .hp-subjects [data-s="математика"] .sj-ic { background-image: url("../img/b-sj-math.jpg"); }
.b-hp .hp-subjects [data-s="физика"] .sj-ic { background-image: url("../img/b-sj-phys.jpg"); }
.b-hp .hp-subjects [data-s="химия"] .sj-ic { background-image: url("../img/b-sj-chem.jpg"); }
.b-hp .hp-subjects [data-s="биология"] .sj-ic { background-image: url("../img/b-sj-bio.jpg"); }
.b-hp .hp-subjects [data-s="история"] .sj-ic { background-image: url("../img/b-sj-hist.jpg"); }
.b-hp .hp-subjects [data-s="информатика"] .sj-ic { background-image: url("../img/b-sj-info.jpg"); }
.b-hp .hp-subjects [data-s="литература"] .sj-ic { background-image: url("../img/b-sj-lit.jpg"); }
.b-hp .hp-subjects [data-s="география"] .sj-ic { background-image: url("../img/b-sj-geo.jpg"); }
.b-hp .hp-subjects [data-s="английский"] .sj-ic { background-image: url("../img/b-sj-eng.jpg"); }
.b-hp .hp-subjects [data-s="обществознание"] .sj-ic { background-image: url("../img/b-sj-soc.jpg"); }

/* правки после проверки: на телефоне вихрь — фоном, текст читается */
@media (max-width: 900px) {
  .b-hero-bg { opacity: .32; right: -50%; height: 70%; }
  .b-small { color: #9AA0AD; }
}

/* ════════════ МОУШН (theme-fx.js) ════════════ */
.fx [data-reveal] { opacity: 0; translate: 0 30px; transition: opacity .8s ease var(--d, 0ms), translate 1.1s var(--spring) var(--d, 0ms); }
.fx [data-reveal].in, .fx-done [data-reveal] { opacity: 1; translate: none; }
.fx [data-reveal="mask"] { opacity: 1; translate: none; }
[data-reveal="mask"] .mk { display: block; }
.fx [data-reveal="mask"] .mk { clip-path: inset(0 0 100% 0); transform: translateY(.4em); transition: clip-path 1s cubic-bezier(.7,0,.2,1) var(--d, 0ms), transform 1.1s var(--spring) var(--d, 0ms); }
.fx [data-reveal="mask"].in .mk, .fx-done [data-reveal="mask"] .mk { clip-path: inset(-.3em -.2em -.4em -.2em); transform: none; }
.fx-calm [data-reveal] { translate: none; transition-duration: .35s; }

/* заголовок первого экрана: строки поднимаются из-под линии */
.fx .b-line > span { animation: b-mask 1.15s var(--spring) both; }
.fx .b-line + .b-line > span { animation-delay: .12s; }
.fx .b-lead, .fx .b-actions, .fx .b-small, .fx .b-chip { animation: b-up 1s .3s var(--spring) both; }
.fx .b-demo { animation: b-demo-in 1.3s .35s var(--spring) both; }
.fx .b-hero-bg { animation: b-bg-in 2.2s cubic-bezier(.2,.7,.2,1) both; }
@keyframes b-mask { from { transform: translateY(105%); } }
@keyframes b-up { from { opacity: 0; transform: translateY(16px); } }
@keyframes b-demo-in { from { opacity: 0; transform: translateY(40px) scale(.94); } }
@keyframes b-bg-in { from { opacity: 0; scale: 1.12; } }
.fx-calm .b-line > span, .fx-calm .b-lead, .fx-calm .b-actions, .fx-calm .b-small, .fx-calm .b-chip, .fx-calm .b-demo, .fx-calm .b-hero-bg { animation-duration: .01s; }

/* параллакс и уход первого экрана */
.b-hero-bg { translate: var(--px, 0) var(--py, 0); }
.b-demo { translate: var(--px, 0) var(--py, 0); }
.b-hero-in { transform: translateY(calc(var(--sk, 0) * -60px)); opacity: calc(1 - var(--sk, 0) * .9); }
.b-hero-bg { transform: rotate(calc(var(--sk, 0) * 18deg)); }

/* живое демо: состояния */
.b-demo.live .b-q { opacity: 0; scale: .7; transform-origin: 100% 100%; transition: opacity .3s, scale .6s var(--spring); }
.b-demo.live.st-q .b-q { opacity: 1; scale: 1; }
.b-demo.live .b-q::after { content: ""; display: inline-block; width: 2px; height: 1em; margin-left: 3px; vertical-align: -2px; background: currentColor; animation: b-caret .9s steps(1) infinite; }
.b-demo.live.st-think .b-q::after, .b-demo.live.st-ok .b-q::after { display: none; }
@keyframes b-caret { 50% { opacity: 0; } }
.b-demo.live .b-morph { display: flex; max-height: 0; padding-block: 0; margin-top: 0; opacity: 0; overflow: hidden; transition: all .35s var(--spring); }
.b-demo.live.st-think .b-morph { max-height: 40px; padding-block: 14px; margin-top: 14px; opacity: 1; }
.b-morph i { animation: b-bop 1s infinite; }
.b-morph i:nth-child(2) { animation-delay: .15s; }
.b-morph i:nth-child(3) { animation-delay: .3s; }
@keyframes b-bop { 0%, 60%, 100% { transform: none; opacity: .4; } 30% { transform: translateY(-4px); opacity: 1; } }
.b-demo.live .b-steps { min-height: 214px; align-content: start; }
.b-demo.live .b-steps li { opacity: 0; translate: 0 16px; scale: .97; transition: opacity .45s, translate .8s var(--spring), scale .8s var(--spring); }
.b-demo.live .b-steps li.on { opacity: 1; translate: none; scale: 1; }
.b-demo.live .b-check { opacity: 0; scale: .85; transition: opacity .35s, scale .7s var(--spring); }
.b-demo.live.st-ok .b-check { opacity: 1; scale: 1; }
.b-demo.live.st-out .b-q, .b-demo.live.st-out .b-steps li, .b-demo.live.st-out .b-check { opacity: 0; transition-duration: .4s; }
.b-check svg path { stroke-dasharray: 30; stroke-dashoffset: 30; }
.b-demo.live.st-ok .b-check svg path { stroke-dashoffset: 0; transition: stroke-dashoffset .5s ease .2s; }
.b-demo:not(.live) .b-check svg path { stroke-dashoffset: 0; }

/* бегущая строка вопросов */
.b-marquee { overflow: hidden; padding: 28px 0 0; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.b-mq-track { display: flex; gap: 10px; width: max-content; animation: b-mq 60s linear infinite; }
.b-marquee:hover .b-mq-track { animation-play-state: paused; }
.fx-calm .b-mq-track { animation-duration: 160s; }
@keyframes b-mq { to { transform: translateX(-50%); } }
.b-mq-track span { display: inline-flex; align-items: center; gap: 10px; padding: 11px 18px 11px 12px; border-radius: 999px; background: var(--card); border: 1px solid var(--hairline); font-size: 15px; white-space: nowrap; color: var(--text); }
.b-mq-track span i { font-style: normal; font-family: var(--font-mono); font-size: 12px; padding: 3px 8px; border-radius: 999px; background: var(--night); color: var(--lime); }

/* бенто: наклон к курсору и световое пятно по краю */
.b-tile[data-tilt] { transform: perspective(1000px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); transition: transform .7s var(--spring); }
.b-tile[data-tilt]:hover { transform: perspective(1000px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(-4px); }
.b-tile[data-spot]::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none; z-index: 2;
  background: radial-gradient(260px circle at var(--mx, -999px) var(--my, -999px), rgba(212,255,58,.75), transparent 60%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
  opacity: 0; transition: opacity .3s; }
.b-tile[data-spot]:hover::before { opacity: 1; }
.b-ic3d { -webkit-mask-image: radial-gradient(closest-side, #000 72%, transparent); mask-image: radial-gradient(closest-side, #000 72%, transparent); }
.b-tile[data-spot]::after { background: radial-gradient(420px circle at var(--mx, -999px) var(--my, -999px), rgba(255,255,255,.06), transparent 60%); }
.b-t-tests[data-spot]::after { background: radial-gradient(420px circle at var(--mx, -999px) var(--my, -999px), rgba(255,255,255,.35), transparent 60%); }
.b-final-bg { -webkit-mask-image: linear-gradient(90deg, transparent, #000 35%); mask-image: linear-gradient(90deg, transparent, #000 35%); }
.b-t-tests[data-spot]::before { background: radial-gradient(260px circle at var(--mx, -999px) var(--my, -999px), rgba(11,13,18,.6), transparent 60%); }
.b-bar i { width: 0; transition: width 1.6s cubic-bezier(.2,.7,.2,1) .4s; }
.b-t-tests.in .b-bar i, html:not(.fx) .b-bar i, .fx-done .b-bar i { width: var(--w); }

/* кнопки-магниты */
.b-btn[data-magnet] { transform: translate(var(--tx, 0px), var(--ty, 0px)); transition: transform .5s var(--spring), background .2s, scale .5s var(--spring); }
.b-btn[data-magnet]:hover { transform: translate(var(--tx, 0px), var(--ty, 0px)); scale: 1.04; }

/* цифры — тем же шрифтом, что заголовки: в моноширинном пробел между тысячами слишком широкий */
.b-stats b, .b-num { font-family: var(--font-display); font-weight: 600; letter-spacing: -.045em; font-variant-numeric: tabular-nums; }

/* иконки предметов: при наведении не пропадают, а слегка поворачиваются */
.b-hp .hp-subjects a:hover .sj-ic { background-color: #000; transform: rotate(-6deg) scale(1.08); }
.b-hp .hp-subjects li { transition: none; }
.b-hp .hp-subjects b { overflow-wrap: anywhere; hyphens: auto; }

/* ── «Как начать»: инфографика слева от вопросов ── */
.b-faq-side { position: sticky; top: calc(var(--nav-h) + 16px); align-self: start; display: grid; gap: 28px; }
.b-faq-side .b-h2 { margin: 0; }
.b-path { position: relative; overflow: hidden; isolation: isolate; border-radius: 24px; padding: 28px 28px 24px; background: var(--night); color: #C9CDD6; border: 1px solid rgba(255,255,255,.06); }
.b-path-bg { position: absolute; z-index: -1; right: -45%; top: -20%; width: 120%; height: auto; opacity: .45; transform: rotate(-20deg);
  -webkit-mask-image: radial-gradient(closest-side, #000 55%, transparent); mask-image: radial-gradient(closest-side, #000 55%, transparent); }
.b-path::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(100deg, var(--night) 35%, transparent 90%); }
.b-path-k { margin: 0 0 18px; font-family: var(--font-mono); font-size: 13px; color: var(--lime); }
.b-path-steps { list-style: none; margin: 0; padding: 0 0 0 34px; position: relative; display: grid; gap: 18px; }
/* линия пути: сначала рисуется сверху вниз, потом по ней бежит световая точка */
.b-path-steps::before { content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px; background: rgba(255,255,255,.12); }
.b-path-steps::after { content: ""; position: absolute; left: 9px; top: 8px; width: 2px; height: calc(100% - 16px); background: var(--lime); transform-origin: top; transform: scaleY(0); transition: transform 1.6s cubic-bezier(.65,.05,.25,1) .3s; }
.b-path.in .b-path-steps::after, html:not(.fx) .b-path-steps::after, .fx-done .b-path-steps::after { transform: scaleY(1); }
.b-path-steps li { position: relative; display: grid; gap: 2px; opacity: .35; translate: 8px 0; transition: opacity .5s, translate .8s var(--spring); }
.b-path-steps li::before { content: ""; position: absolute; left: -31px; top: 6px; width: 14px; height: 14px; border-radius: 50%; background: var(--night); border: 2px solid rgba(255,255,255,.25); transition: background .4s, border-color .4s, box-shadow .4s; }
.b-path.in .b-path-steps li, html:not(.fx) .b-path-steps li, .fx-done .b-path-steps li { opacity: 1; translate: none; }
.b-path.in .b-path-steps li::before, html:not(.fx) .b-path-steps li::before { background: var(--lime); border-color: var(--lime); box-shadow: 0 0 0 5px rgba(212,255,58,.14); }
.b-path.in .b-path-steps li:nth-child(1), .b-path.in .b-path-steps li:nth-child(1)::before { transition-delay: .35s; }
.b-path.in .b-path-steps li:nth-child(2), .b-path.in .b-path-steps li:nth-child(2)::before { transition-delay: .75s; }
.b-path.in .b-path-steps li:nth-child(3), .b-path.in .b-path-steps li:nth-child(3)::before { transition-delay: 1.15s; }
.b-path.in .b-path-steps li:nth-child(4), .b-path.in .b-path-steps li:nth-child(4)::before { transition-delay: 1.55s; }
.b-path-steps b { font-family: var(--font-display); font-size: 26px; font-weight: 600; letter-spacing: -.04em; color: #F5F6F8; line-height: 1.1; }
.b-path-steps span { font-size: 14.5px; line-height: 1.45; color: #9AA0AD; }
.b-path .b-pulse { position: absolute; left: 34px; top: 0; width: 8px; height: 8px; margin-left: -3px; border-radius: 50%; background: #F5F6F8; box-shadow: 0 0 0 4px rgba(212,255,58,.35); opacity: 0; }
.b-path.in .b-pulse { animation: b-run 4.5s 2.2s ease-in-out infinite; }
@keyframes b-run { 0% { top: var(--p0, 70px); opacity: 0; } 10% { opacity: 1; } 90% { opacity: 1; } 100% { top: var(--p1, 300px); opacity: 0; } }
.b-path-mail { margin: 22px 0 0; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.08); font-size: 14px; color: #9AA0AD; overflow-wrap: anywhere; }
.b-path-mail a { color: var(--lime); text-decoration: none; }
.b-path-mail a:hover { text-decoration: underline; }
.b-path[data-spot]::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none; z-index: 2;
  background: radial-gradient(240px circle at var(--mx, -999px) var(--my, -999px), rgba(212,255,58,.7), transparent 60%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0); }
@media (max-width: 900px) { .b-faq-side { position: static; } }
.b-faq-list { align-content: start; align-self: start; }


/* ── телефон: спокойная прокрутка и аккуратная вёрстка ── */
@media (hover: none), (max-width: 900px) {
  /* первый экран не двигается при прокрутке пальцем */
  .b-hero-in { transform: none !important; opacity: 1 !important; }
  .b-hero-bg { transform: none !important; translate: none !important; will-change: auto; }
  .b-demo { translate: none !important; }
  .b-tile, .b-path { transform: none !important; }
}
@media (max-width: 600px) {
  .b-hero-bg { right: -55%; height: 62%; opacity: .28; }
  /* плитки: картинка не наезжает на заголовок */
  .b-t-tutor { padding-top: 132px; }
  .b-t-tutor .b-ic3d { width: 40%; top: 6px; right: 6px; }
  .b-t-books .b-ic3d, .b-t-exams .b-ic3d, .b-t-langs .b-ic3d { width: 44%; top: -4%; right: -4%; }
  /* предметы: длинные названия не переносятся по буквам */
  .b-hp .hp-subjects a { padding: 16px 14px; }
  .b-hp .hp-subjects b { font-size: 16px; letter-spacing: -.025em; overflow-wrap: normal; word-break: normal; hyphens: manual; }
  .b-hp .hp-subjects span { font-size: 13px; }
  /* финальный блок: вихрь уходит в угол и не мешает тексту */
  .b-final { padding: 48px 22px 52px; }
  .b-final-bg { width: 78%; right: -30%; top: -18%; opacity: .32; }
  .b-final-in { position: relative; }
}

/* ── живое демо: высота рамки постоянная ── */
.b-demo.live .b-steps { position: relative; }
.b-demo.live .b-morph { position: absolute; left: 20px; top: 108px; margin: 0 !important; }
.b-demo.st-measure, .b-demo.st-measure * { transition: none !important; animation: none !important; }
.b-demo.st-measure .b-q, .b-demo.st-measure .b-check, .b-demo.st-measure .b-steps li { opacity: 0 !important; }
.b-demo.live { display: flex; flex-direction: column; }
.b-demo.live .b-check { margin-top: auto; }

/* ── меню для телефона ── */
.nav-burger { display: none; }
.b-mnav { display: none; }
@media (max-width: 760px) {
  .site-nav .nav-links .nav-link.nav-keep { display: none; }
  .nav-burger { display: grid; align-content: center; justify-items: center; gap: 4px; width: 40px; height: 40px; margin-left: 2px; border: 0; border-radius: 50%; background: rgba(255,255,255,.08); cursor: pointer; padding: 0; color: inherit; }
  .nav-burger i { display: block; width: 17px; height: 2px; border-radius: 2px; background: currentColor; transition: transform .35s var(--spring), opacity .2s; }
  .menu-open .nav-burger i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .menu-open .nav-burger i:nth-child(2) { opacity: 0; }
  .menu-open .nav-burger i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .b-mnav { display: grid; position: absolute; left: 0; right: 0; top: calc(100% + 8px); padding: 10px; border-radius: 22px;
    background: rgba(14,16,21,.94); -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px); border: 1px solid rgba(255,255,255,.08);
    box-shadow: 0 24px 50px -20px rgba(0,0,0,.6);
    opacity: 0; visibility: hidden; transform: translateY(-8px) scale(.98); transform-origin: top center; transition: opacity .25s, transform .4s var(--spring), visibility 0s .25s; }
  .menu-open .b-mnav { opacity: 1; visibility: visible; transform: none; transition: opacity .25s, transform .4s var(--spring), visibility 0s; }
  .b-mnav-link { display: flex; align-items: center; justify-content: space-between; padding: 15px 16px; border-radius: 14px; color: #F2F3F5; text-decoration: none; font-family: var(--font-display); font-size: 19px; font-weight: 600; letter-spacing: -.02em; }
  .b-mnav-link::after { content: "→"; color: var(--lime); font-family: var(--font-ui); font-size: 16px; }
  .b-mnav-link + .b-mnav-link { border-top: 1px solid rgba(255,255,255,.06); }
  .b-mnav-link:active, .b-mnav-link:hover { background: rgba(212,255,58,.08); }
}
@media (max-width: 760px) {
  .site-nav .nav-inner { position: relative; }
  .b-mnav { pointer-events: auto; }
  body:has(.b-hp):not(.dark) .nav-burger { color: #E3E5EA; }
  body.dark .nav-burger { color: var(--ink); }
}

/* ════════════ ШАПКА ВНУТРЕННИХ СТРАНИЦ: одна строка + «Меню» ════════════ */
.vxi { width: 22px; height: 22px; display: block; }
.vxi .vxi-a { fill: var(--lime); stroke: none; }
.vxi .vxi-s { fill: none; stroke: var(--lime); stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
body:not(.dark) .site-nav .vxm-search .vxi .vxi-s { stroke: #7FA300; }

.app-nav.vxm-on .nav-inner { flex-wrap: nowrap !important; padding-bottom: 8px !important; position: relative; }
.app-nav.vxm-on .app-nav-right > .icon-btn:not(.vxm-search), .app-nav.vxm-on .app-nav-right > a.icon-btn, .app-nav.vxm-on .app-nav-exit { display: none !important; }
.app-nav.vxm-on .app-nav-right { gap: 6px; }
.vxm-search { width: 42px; height: 42px; display: grid; place-items: center; color: var(--ink); }
.vxm-cur { display: none; }
.vxm-btn { display: inline-flex; align-items: center; gap: 10px; height: 42px; padding: 0 18px 0 14px; border: 0; border-radius: 999px; background: var(--night); color: #F2F3F5; font: 600 14px var(--font-ui); cursor: pointer; transition: background .2s; }
body.dark .vxm-btn { background: var(--lime); color: var(--lime-ink); }
.vxm-btn:hover { background: #20252F; }
body.dark .vxm-btn:hover { background: #E2FF6A; }
.vxm-bars { display: grid; gap: 3.5px; width: 16px; }
.vxm-bars i { display: block; height: 2px; border-radius: 2px; background: currentColor; transition: transform .35s var(--spring), opacity .2s; }
.vxm-open .vxm-bars i:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.vxm-open .vxm-bars i:nth-child(2) { opacity: 0; }
.vxm-open .vxm-bars i:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* панель меню: всегда тёмная, как плитки главной */
.vxm-panel { position: fixed; z-index: 120; right: var(--vxm-right, 16px); top: var(--vxm-top, 80px); width: 400px; max-height: calc(100vh - 110px); overflow: auto; overscroll-behavior: contain;
  padding: 14px; border-radius: 26px; background: rgba(13,15,20,.97); color: #E3E5EA; border: 1px solid rgba(255,255,255,.08);
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); box-shadow: 0 30px 70px -24px rgba(0,0,0,.7);
  opacity: 0; visibility: hidden; transform: translateY(-8px) scale(.98); transform-origin: top right;
  transition: opacity .2s, transform .4s var(--spring), visibility 0s .2s; text-align: left; }
.vxm-panel.open { opacity: 1; visibility: visible; transform: none; transition: opacity .2s, transform .4s var(--spring), visibility 0s; }
.vxm-me { display: flex; align-items: center; gap: 12px; padding: 10px 10px 14px; margin-bottom: 4px; border-bottom: 1px solid rgba(255,255,255,.07); text-decoration: none; color: inherit; }
.vxm-ava { width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center; background: var(--lime); color: var(--lime-ink); font: 700 18px var(--font-display); flex: none; }
.vxm-me-t { display: grid; gap: 2px; min-width: 0; }
.vxm-me-t b { font: 600 17px var(--font-display); color: #F5F6F8; letter-spacing: -.02em; }
.vxm-me-t small { font-size: 13px; color: #9AA0AD; }
.vxm-h { margin: 14px 10px 8px; font: 500 11.5px var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: #6E7480; }
.vxm-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
.vxm-item { display: flex; flex-direction: column; gap: 10px; padding: 12px; border-radius: 18px; background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.05); text-decoration: none; color: inherit; transition: background .2s, border-color .2s; }
.vxm-item:hover { background: rgba(255,255,255,.08); }
.vxm-item.on { border-color: rgba(212,255,58,.45); background: rgba(212,255,58,.07); }
.vxm-t { display: grid; gap: 3px; }
.vxm-t b { font: 600 15px var(--font-display); color: #F5F6F8; letter-spacing: -.02em; }
.vxm-t small { font-size: 12px; line-height: 1.35; color: #8E94A0; }
.vxm-ic { width: 40px; height: 40px; border-radius: 13px; display: grid; place-items: center; flex: none; color: #EEF0F3;
  background: linear-gradient(150deg, #2B313C, #14171D); box-shadow: inset 0 1px 0 rgba(255,255,255,.12), inset 0 0 0 1px rgba(255,255,255,.05); }
.vxm-ic.sm { width: 34px; height: 34px; border-radius: 11px; }
.vxm-ic.sm .vxi { width: 19px; height: 19px; }
.vxm-list { display: grid; gap: 2px; }
.vxm-row { display: flex; align-items: center; gap: 12px; width: 100%; padding: 8px 10px; border: 0; border-radius: 14px; background: transparent; color: #E3E5EA; font: 500 15px var(--font-ui); text-decoration: none; cursor: pointer; text-align: left; }
.vxm-row:hover, .vxm-row.on { background: rgba(255,255,255,.06); }
.vxm-row em { margin-left: auto; font-style: normal; font: 500 12px var(--font-mono); padding: 4px 9px; border-radius: 999px; background: rgba(212,255,58,.12); color: var(--lime); }
.vxm-sw { margin-left: auto; width: 38px; height: 22px; border-radius: 999px; background: rgba(255,255,255,.14); position: relative; transition: background .2s; }
.vxm-sw::after { content: ""; position: absolute; left: 3px; top: 3px; width: 16px; height: 16px; border-radius: 50%; background: #F5F6F8; transition: transform .3s var(--spring); }
.vxm-sw.on { background: var(--lime); }
.vxm-sw.on::after { transform: translateX(16px); background: var(--lime-ink); }
.vxm-exit { color: #FF9C8A; }
.vxm-exit .vxm-ic { color: #FF9C8A; }

/* широкий экран: разделы в строке, в меню — только аккаунт */
@media (min-width: 1201px) {
  .vxm-panel { width: 330px; }
  .vxm-panel > .vxm-h:first-of-type, .vxm-panel .vxm-grid { display: none; }
  .vxm-panel > .vxm-h { margin-top: 10px; }
}
/* средний и узкий экран: одна строка — логотип, текущий раздел, поиск, «Меню» */
@media (max-width: 1200px) {
  .app-nav.vxm-on .app-nav-links { display: none !important; }
  .app-nav.vxm-on .nav-name { display: none; }
  .app-nav.vxm-on .vxm-cur { display: inline-flex; align-items: center; gap: 4px; min-width: 0; margin-left: 6px; padding: 8px 12px; border: 0; border-radius: 999px; background: var(--hairline); color: var(--ink); font: 600 14.5px var(--font-ui); cursor: pointer; }
  .app-nav.vxm-on .vxm-cur span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .app-nav.vxm-on .vxm-cur svg { width: 16px; height: 16px; flex: none; opacity: .6; transition: transform .3s; }
  .vxm-open .vxm-cur svg { transform: rotate(180deg); }
}
@media (max-width: 760px) {
  .app-nav.vxm-on .nav-inner { padding: 6px 6px 6px 8px !important; gap: 4px !important; }
  .vxm-btn { width: 44px; height: 44px; padding: 0; justify-content: center; }
  .vxm-btn-t { display: none; }
  .vxm-search { width: 44px; height: 44px; }
  .vxm-panel { left: 8px; right: 8px; width: auto; max-height: calc(100dvh - var(--vxm-top, 72px) - 10px); border-radius: 24px; padding: 10px; transform-origin: top center; }
  .vxm-item { flex-direction: row; align-items: center; gap: 10px; padding: 10px; border-radius: 16px; }
  .vxm-item .vxm-t small { display: none; }
  .vxm-item .vxm-t b { font-size: 14.5px; line-height: 1.15; }
  .vxm-ic { width: 38px; height: 38px; }
  .vxm-me { padding: 8px 8px 12px; }
  .vxm-h { margin: 12px 8px 6px; }
  .dash-block-head { flex-direction: column; align-items: flex-start !important; gap: 2px !important; }
  html.vxm-lock, html.vxm-lock body { overflow: hidden; }
}

/* ════════════ КАБИНЕТ: фирменные иконки и порядок на телефоне ════════════ */
/* предметы — те же стеклянные иконки, что на главной */
.subject-item[data-s] .subject-icon { width: 44px; height: 44px; border-radius: 13px; background-color: #000; background-position: center; background-size: cover; background-repeat: no-repeat; box-shadow: inset 0 0 0 1px rgba(255,255,255,.08); }
.subject-item[data-s] .subject-icon > * { display: none; }
.subject-item:hover .subject-icon { background-color: #000; transform: rotate(-5deg) scale(1.05); }
.subject-icon { transition: transform .6s var(--spring); }
.subject-option[data-s] { display: inline-flex; align-items: center; gap: 8px; padding-left: 6px; }
.so-ic { width: 28px; height: 28px; border-radius: 9px; background-color: #000; background-position: center; background-size: cover; background-repeat: no-repeat; flex: none; }
[data-s="математика"] .subject-icon, [data-s="математика"] .so-ic { background-image: url("../img/b-sj-math.jpg"); }
[data-s="физика"] .subject-icon, [data-s="физика"] .so-ic { background-image: url("../img/b-sj-phys.jpg"); }
[data-s="химия"] .subject-icon, [data-s="химия"] .so-ic { background-image: url("../img/b-sj-chem.jpg"); }
[data-s="биология"] .subject-icon, [data-s="биология"] .so-ic { background-image: url("../img/b-sj-bio.jpg"); }
[data-s="история"] .subject-icon, [data-s="история"] .so-ic { background-image: url("../img/b-sj-hist.jpg"); }
[data-s="информатика"] .subject-icon, [data-s="информатика"] .so-ic { background-image: url("../img/b-sj-info.jpg"); }
[data-s="литература"] .subject-icon, [data-s="литература"] .so-ic { background-image: url("../img/b-sj-lit.jpg"); }
[data-s="география"] .subject-icon, [data-s="география"] .so-ic { background-image: url("../img/b-sj-geo.jpg"); }
[data-s="английский"] .subject-icon, [data-s="английский"] .so-ic { background-image: url("../img/b-sj-eng.jpg"); }
[data-s="обществознание"] .subject-icon, [data-s="обществознание"] .so-ic { background-image: url("../img/b-sj-soc.jpg"); }
.subject-del { width: 34px; height: 34px; border-radius: 50%; color: var(--label); font-size: 13px; opacity: .7; }
.subject-del:hover { opacity: 1; background: var(--hairline); color: var(--err, #C23D2A); }
/* плитки разделов: фирменные иконки на графитовом квадрате */
.dash-sec .ds-ic.vxm-ic { width: 48px; height: 48px; border-radius: 15px; }
.dash-sec .ds-ic.vxm-ic .vxi { width: 26px; height: 26px; }
/* «дней подряд» уже есть в бейдже наверху — в блоке «Сегодня» не повторяем */
.dash-side .vx-tiles { grid-template-columns: repeat(2, 1fr) !important; }
.dash-side .vx-tiles .vx-tile:nth-child(3) { display: none; }

@media (max-width: 760px) {
  #screen-subjects { padding: 14px 12px 28px !important; }
  .dash-head { display: grid !important; grid-template-columns: minmax(0, 1fr) auto; align-items: start !important; gap: 12px; margin: 4px 4px 16px !important; }
  .dash-kicker { display: none; }
  .dash-head .subjects-greeting { font-size: 30px !important; line-height: 1.05; }
  .dash-meta { margin-top: 8px; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .dash-dot { margin: 0 7px; }
  .dash-head .streak-badge { padding: 9px 13px; font-size: 15px; gap: 6px; margin-top: 2px; }
  .dash-head .streak-cap { display: none; }
  .dash-block { padding: 16px; }
  .dash-block-head { margin-bottom: 12px; }
  .dash-block-head .subjects-sub { font-size: 21px; }
  .dash-hint { display: inline !important; font-size: 11.5px; }
  .subject-item { padding: 2px 4px 2px 8px; border-radius: 16px; }
  .subject-item-left { padding: 8px 0; }
  .subject-name { font-size: 16.5px; }
  .add-subject-btn { margin-top: 10px; padding: 13px; }
  .dash-side #vx-today-box { padding: 18px; border-radius: 22px; }
  .dash-side .goal-ring .goal-cap b { font-size: 18px; }
  .dash-side .vx-tiles { margin-top: 16px; }
  .dash-side .vx-tile { padding: 12px 14px; }
  .dash-side .vx-tile .vt-n { font-size: 24px; }
  /* разделы — компактная сетка 2×2 */
  .dash-sections { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; gap: 10px !important; }
  .dash-sec { flex-direction: column !important; align-items: flex-start !important; gap: 14px !important; padding: 16px !important; border-radius: 20px; }
  .dash-sec .ds-txt small { display: none; }
  .dash-sec .ds-txt b { font-size: 16.5px; line-height: 1.15; }
}

.vxm-scrim { position: fixed; inset: 0; z-index: 110; background: rgba(8,10,14,.45); opacity: 0; visibility: hidden; transition: opacity .25s, visibility 0s .25s; }
.vxm-scrim.open { opacity: 1; visibility: visible; transition: opacity .25s, visibility 0s; }
@media (min-width: 1201px) { .vxm-scrim { background: transparent; } }

.site-nav.vxm-open { z-index: 130; }

/* иконка предмета не пропадает при наведении (общее правило hover задавало фон целиком) */
[data-s="математика"] { --sj: url("../img/b-sj-math.jpg"); }
[data-s="физика"] { --sj: url("../img/b-sj-phys.jpg"); }
[data-s="химия"] { --sj: url("../img/b-sj-chem.jpg"); }
[data-s="биология"] { --sj: url("../img/b-sj-bio.jpg"); }
[data-s="история"] { --sj: url("../img/b-sj-hist.jpg"); }
[data-s="информатика"] { --sj: url("../img/b-sj-info.jpg"); }
[data-s="литература"] { --sj: url("../img/b-sj-lit.jpg"); }
[data-s="география"] { --sj: url("../img/b-sj-geo.jpg"); }
[data-s="английский"] { --sj: url("../img/b-sj-eng.jpg"); }
[data-s="обществознание"] { --sj: url("../img/b-sj-soc.jpg"); }
.subject-item[data-s] .subject-icon, .subject-item[data-s]:hover .subject-icon,
.subject-option[data-s] .so-ic, .subject-option[data-s]:hover .so-ic { background: #000 var(--sj) center / cover no-repeat !important; }

/* светлая тема: контурные иконки контрастнее — чёрный квадрат, белая линия толще, лайм ярче */
body:not(.dark) .dash-sec .ds-ic.vxm-ic { background: linear-gradient(160deg, #1E232C 0%, #07080B 70%); color: #FFFFFF; box-shadow: inset 0 1px 0 rgba(255,255,255,.16), 0 8px 18px -10px rgba(7,8,11,.55); }
body:not(.dark) .dash-sec .ds-ic .vxi path[stroke], body:not(.dark) .dash-sec .ds-ic .vxi circle[stroke], body:not(.dark) .dash-sec .ds-ic .vxi rect[stroke] { stroke-width: 2; }
.dash-sec .ds-ic .vxi .vxi-a { fill: #DFFF4F; }
.dash-sec .ds-ic .vxi .vxi-s { stroke: #DFFF4F; stroke-width: 2.1; }
.dash-sec:hover .ds-ic.vxm-ic { transform: rotate(-6deg) scale(1.06); }
.dash-sec .ds-ic.vxm-ic { transition: transform .6s var(--spring); }

/* ── второй набор: стеклянные иконки ── */
.vxm-ic.is-glass { background: #000 !important; overflow: hidden; padding: 0; box-shadow: inset 0 0 0 1px rgba(255,255,255,.08) !important; }
.vxm-ic.is-glass .vxg { width: 100%; height: 100%; object-fit: cover; display: block; }
.dash-sec .ds-ic.vxm-ic.is-glass { width: 64px; height: 64px; border-radius: 18px; }

/* кабинет на телефоне: плитки разделов — иконка и название по центру карточки */
@media (max-width: 760px) {
  .dash-sec { align-items: center !important; justify-content: center; text-align: center; gap: 12px !important; padding: 20px 12px 18px !important; min-height: 150px; }
  .dash-sec .ds-ic.vxm-ic.is-glass { width: 76px; height: 76px; border-radius: 22px; box-shadow: 0 14px 26px -14px rgba(7,8,11,.6), inset 0 0 0 1px rgba(255,255,255,.08) !important; }
  .dash-sec .ds-txt { display: grid; justify-items: center; }
  .dash-sec .ds-txt b { font-size: 16px; text-wrap: balance; }
}

/* ════════════ ТАРИФЫ: низ страницы — инфографика вместо сплошного текста ════════════ */
.pr-kicker { font: 500 13px var(--font-mono); color: var(--text2); margin: 0 0 8px; }
/* три шага оплаты */
.pr-steps { list-style: none; margin: 18px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; position: relative; counter-reset: s; }
.pr-steps li { position: relative; display: grid; grid-template-columns: 64px minmax(0, 1fr); grid-template-rows: auto 1fr; column-gap: 16px; align-items: start; padding: 18px; border-radius: 22px; background: var(--night); color: #9AA0AD; font-size: 14px; line-height: 1.5; }
.pr-steps img { grid-row: 1 / 3; width: 64px; height: 64px; border-radius: 18px; object-fit: cover; box-shadow: inset 0 0 0 1px rgba(255,255,255,.08); }
.pr-steps b { font: 600 17px var(--font-display); color: #F5F6F8; letter-spacing: -.02em; margin: 2px 0 4px; }
.pr-step-n { position: absolute; top: 12px; right: 14px; font: 500 12px var(--font-mono); color: var(--lime); opacity: .8; }
.pr-steps li:not(:last-child)::after { content: ""; position: absolute; right: -14px; top: 50%; width: 14px; height: 2px; background: repeating-linear-gradient(90deg, var(--lime) 0 4px, transparent 4px 7px); z-index: 1; }
body.dark .pr-steps li { background: var(--card); border: 1px solid var(--hairline); }
/* что считается в тарифе: ровная сетка карточек */
.pr-how { margin-top: 72px; }
.pr-how-head { margin-bottom: 18px; }
.pr-how .pr-h { font-size: clamp(28px, 3vw, 40px); margin: 0; }
.pr-how-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.pr-fact { display: flex; flex-direction: column; gap: 14px; padding: 22px; border-radius: 22px; background: var(--card); border: 1px solid var(--hairline); }
.pr-fact img { width: 56px; height: 56px; border-radius: 16px; object-fit: cover; }
.pr-fact p { margin: 0; font-size: 14.5px; line-height: 1.6; color: var(--text2); }
.pr-fact p b { display: block; font: 600 17px var(--font-display); color: var(--ink); letter-spacing: -.02em; margin-bottom: 6px; }
.pr-fact-note { background: var(--paper-2); border-style: dashed; }
/* как перейти: тёмный баннер с видео */
.pr-upgrade { position: relative; overflow: hidden; isolation: isolate; margin-top: 14px; border-radius: 28px; background: var(--night); color: #C9CDD6; padding: 44px; }
.pr-up-bg { position: absolute; z-index: -1; right: -8%; top: -10%; height: 120%; width: auto; max-width: none; aspect-ratio: 3 / 2; object-fit: cover; opacity: .55;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 45%); mask-image: linear-gradient(90deg, transparent 0, #000 45%); }
.pr-up-in { max-width: 620px; }
.pr-upgrade .pr-h { color: #F5F6F8; font-size: clamp(26px, 2.8vw, 36px); margin: 0 0 14px; }
.pr-upgrade .pr-p { color: #B5BAC4; font-size: 15px; line-height: 1.7; }
.pr-upgrade .pr-p a { color: var(--lime); }
.pr-up-btn { display: inline-flex; margin-top: 22px; padding: 14px 22px; border-radius: 999px; background: var(--lime); color: var(--lime-ink) !important; font-weight: 600; text-decoration: none; }
/* статья + цифры */
.pr-seo { margin-top: 80px; }
.pr-seo-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(260px, 1fr); gap: 40px; align-items: start; }
.pr-seo-text p { font-size: 15.5px; line-height: 1.75; }
.pr-seo-stats { position: sticky; top: 110px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; padding: 18px; border-radius: 26px; background: var(--night); overflow: hidden; isolation: isolate; }
.pr-seo-stats div { padding: 16px; border-radius: 18px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.07); display: grid; gap: 4px; }
.pr-seo-stats b { font: 500 32px var(--font-mono); color: #F5F6F8; letter-spacing: -.04em; }
.pr-seo-stats span { font-size: 12.5px; color: #9AA0AD; line-height: 1.35; }
.pr-seo-stats img { grid-column: 1 / -1; width: 62%; margin: 4px auto -30px; mix-blend-mode: screen; }
/* вопросы: заголовок и помощь слева, список справа */
.pr-faq-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.4fr); gap: 40px; align-items: start; margin-top: 72px; }
.pr-faq-side { position: sticky; top: 110px; display: grid; gap: 22px; }
.pr-faq-side .pr-faq-h { margin: 0; font-size: clamp(28px, 3vw, 40px); }
.pr-help { display: grid; justify-items: start; gap: 6px; padding: 22px; border-radius: 24px; background: var(--card); border: 1px solid var(--hairline); }
.pr-help img { width: 64px; height: 64px; border-radius: 18px; margin-bottom: 8px; }
.pr-help b { font: 600 19px var(--font-display); color: var(--ink); letter-spacing: -.02em; }
.pr-help span { color: var(--text2); font-size: 14px; }
.pr-help a { font-weight: 600; color: var(--ink); overflow-wrap: anywhere; }
.pr-faq-grid .pr-faq { margin: 0; }
/* карточки тарифов одной высоты, кнопки внизу */
.pricing-wrap .plan-grid { align-items: stretch; }

@media (max-width: 900px) {
  .pr-steps, .pr-how-grid { grid-template-columns: minmax(0, 1fr); }
  .pr-steps li:not(:last-child)::after { right: auto; left: 50px; top: auto; bottom: -14px; width: 2px; height: 14px; background: repeating-linear-gradient(180deg, var(--lime) 0 4px, transparent 4px 7px); }
  .pr-seo-grid, .pr-faq-grid { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .pr-seo-stats, .pr-faq-side { position: static; }
  .pr-how-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .pr-how-grid { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .pr-fact { flex-direction: row; align-items: flex-start; padding: 16px; }
  .pr-fact img { width: 48px; height: 48px; flex: none; }
  .pr-upgrade { padding: 28px 22px; border-radius: 24px; }
  .pr-up-bg { opacity: .3; right: -60%; }
  .pr-seo-stats b { font-size: 26px; }
}
/* карточки тарифов: списки растягиваются, кнопки оплаты и подписи стоят на одной линии */
.pricing-wrap .plan-card ul { flex: 1 1 auto; }
.pricing-wrap .plan-card .plan-foot { margin-top: 18px; min-height: 3.2em; }
.pr-seo h2, .pr-faq-side .pr-faq-h { line-height: 1.05; text-wrap: balance; }
.pr-seo-stats img { width: 46%; margin-bottom: -18px; }
@media (min-width: 901px) { .pricing-wrap .plan-card:not(:has(.trial-btn)) .pay-note { margin-bottom: 101px; } }
@media (max-width: 900px) { .pr-seo-stats img { width: 34%; margin: 0 auto -10px; } }
/* глобус в блоке цифр: квадрат без растяжения */
.pr-seo-stats { align-items: start; }
.pr-seo-stats img { height: auto !important; aspect-ratio: 1 / 1; object-fit: contain; justify-self: center; align-self: center; width: 52%; margin: 6px auto -16px; }
@media (max-width: 900px) { .pr-seo-stats img { width: 34%; } }

/* «Орбита»: список чатов репетитора */
.vxc-new { background: var(--lime); border-color: var(--lime); color: var(--lime-ink); border-radius: 14px; }
.vxc-item { border-radius: 12px; }
.vxc-head { font-family: var(--font-mono); font-weight: 500; font-size: 12px; color: var(--label); }
.vxc-group { font-family: var(--font-mono); font-size: 11px; color: var(--label); }
.vxc-close { border-radius: 12px; }

/* главная: заголовок «Вопросы» над списком вопросов (правая колонка) */
.b-faq-main { min-width: 0; }
.b-faq-main > .b-h2 { margin-bottom: 22px; }
@media (max-width: 900px) { .b-faq-main { order: -1; } }