/* =====================================================================
   Cover The Gaps — Public Landing v2 (/) · "Warm Workspace"
   Per ТЗ 05: pain-first hero, live demo peak, honest proof stack.
   Marketing shell: warm paper + ink + brand orange #FF6B35 (actions only).
   Product mini-screens keep the in-app Aurora look (white + indigo) so
   they read as real screenshots, not decoration.
   Fonts: Bricolage Grotesque (display) + Plus Jakarta Sans (text).
   ===================================================================== */

:root {
  --font-text: "Plus Jakarta Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Bricolage Grotesque", var(--font-text);

  /* marketing shell */
  --paper:    #faf7f1;
  --paper-2:  #f3eee4;
  --paper-3:  #ece5d7;
  --card:     #fffdf9;
  --line:     #e6dfd2;
  --line-2:   #d8cfbd;
  --ink:      #221f1a;
  --ink-2:    #5c564b;
  --ink-3:    #8d8678;

  --orange:      #ff6b35;
  --orange-deep: #e8501c;
  --orange-soft: #ffe7dc;
  --orange-ghost:#fff3ec;

  /* dark peak block */
  --night:    #1c1915;
  --night-2:  #262219;
  --night-line: rgba(255,255,255,.09);
  --night-text: #f3ede2;
  --night-dim:  #a59c8c;

  /* product (Aurora) accents inside frames */
  --app-bg:      #f4f5f8;
  --app-surface: #ffffff;
  --app-border:  #e6e8ef;
  --app-ink:     #1a2030;
  --app-ink-2:   #5b6577;
  --app-ink-3:   #8b94a6;
  --app-primary: #4f46e5;
  --app-primary-50: #eef0fe;
  --app-green:  #0a8f53;  --app-green-bg: #e6f6ee;
  --app-amber:  #b4690e;  --app-amber-bg: #fbf0dd;
  --app-rose:   #d61f49;  --app-rose-bg:  #fdeaee;
  --app-sky:    #0e7490;  --app-sky-bg:   #e0f2f7;
  --app-violet: #6d28d9;  --app-violet-bg:#efe9fd;

  --r-sm: 8px; --r: 12px; --r-lg: 16px; --r-xl: 22px;
  --shadow-sm: 0 1px 2px rgba(45,38,25,.06), 0 1px 1px rgba(45,38,25,.04);
  --shadow:    0 2px 10px rgba(45,38,25,.07), 0 1px 2px rgba(45,38,25,.05);
  --shadow-md: 0 14px 40px -12px rgba(45,38,25,.18), 0 2px 6px rgba(45,38,25,.06);
  --shadow-frame: 0 30px 70px -30px rgba(40,32,18,.35), 0 4px 14px rgba(40,32,18,.08);
  --ease: cubic-bezier(.22,.61,.36,1);
}

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-text);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.lp h1, .lp h2, .lp h3, .lp h4 {
  font-family: var(--font-display);
  letter-spacing: -.02em;
  line-height: 1.12;
  margin: 0;
  text-wrap: balance;
}
.lp p { margin: 0; text-wrap: pretty; }
.lp a { color: inherit; }
.lp [data-lucide] { width: 18px; height: 18px; stroke-width: 2; flex: none; }
.lp img, .lp svg { vertical-align: middle; }

.wrap { max-width: 1160px; margin-inline: auto; padding-inline: 28px; }
@media (max-width: 640px) { .wrap { padding-inline: 20px; } }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s var(--ease), transform .65s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal.delay-1 { transition-delay: .08s; }
.reveal.delay-2 { transition-delay: .16s; }
.reveal.delay-3 { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- atoms ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
  color: var(--orange-deep);
}
.eyebrow--dim { color: var(--ink-3); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  height: 52px; padding: 0 26px; border-radius: 999px;
  font-family: var(--font-text); font-size: 16px; font-weight: 700; cursor: pointer; white-space: nowrap;
  border: 1px solid transparent; text-decoration: none; transition: .18s var(--ease);
}
.btn svg { width: 18px; height: 18px; }
.btn--primary {
  background: var(--orange); color: #fff;
  box-shadow: 0 12px 26px -10px rgba(232,80,28,.55);
}
.btn--primary:hover { background: var(--orange-deep); transform: translateY(-1px); box-shadow: 0 16px 30px -10px rgba(232,80,28,.6); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn--ghost:hover { background: var(--card); border-color: var(--ink-3); }
.btn--night { background: rgba(255,255,255,.07); color: var(--night-text); border-color: rgba(255,255,255,.2); }
.btn--night:hover { background: rgba(255,255,255,.13); }
.btn--sm { height: 42px; padding: 0 20px; font-size: 14.5px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.cta-micro { display: flex; align-items: center; gap: 7px; font-size: 13.5px; color: var(--ink-3); font-weight: 600; }
.cta-micro svg { width: 15px; height: 15px; color: var(--app-green); }

.fact-line {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 14px; font-weight: 700; color: var(--ink-2);
  background: var(--paper-2); border: 1px solid var(--line);
  border-radius: 999px; padding: 9px 16px;
}
.fact-line svg { width: 16px; height: 16px; color: var(--orange-deep); }

.s-head { max-width: 720px; margin-bottom: 40px; }
.s-head--center { margin-inline: auto; text-align: center; }
.s-title { font-size: clamp(1.85rem, 3.4vw, 2.7rem); font-weight: 700; margin-top: 14px; }
.s-sub { color: var(--ink-2); font-size: 17.5px; margin-top: 16px; line-height: 1.65; }
.s-head--center .s-sub { margin-inline: auto; max-width: 640px; }

.section { padding: 88px 0; }
@media (max-width: 760px) { .section { padding: 64px 0; } }

/* =====================================================================
   1 · NAVBAR
   ===================================================================== */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 80;
  transition: background .25s var(--ease), box-shadow .25s var(--ease), border-color .25s;
  border-bottom: 1px solid transparent;
}
.nav.is-solid { background: rgba(250,247,241,.92); backdrop-filter: blur(10px); border-color: var(--line); box-shadow: 0 6px 24px -14px rgba(45,38,25,.25); }
.nav__in { max-width: 1160px; margin-inline: auto; padding-inline: 28px; height: 72px; display: flex; align-items: center; gap: 8px; }
.brand { display: flex; align-items: center; gap: 11px; font-family: var(--font-display); font-weight: 700; font-size: 19px; letter-spacing: -.02em; text-decoration: none; color: var(--ink); }
.brand__mark { width: 34px; height: 34px; border-radius: 10px; background: var(--ink); color: var(--orange); display: grid; place-items: center; }
.brand__mark svg { width: 19px; height: 19px; }
.nav__links { display: flex; gap: 2px; margin-left: 18px; }
.nav__links > a, .nav-drop > button {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 9px 14px; border-radius: 10px; border: 0; background: none; cursor: pointer;
  font-family: var(--font-text); font-size: 15px; font-weight: 600; color: var(--ink-2); text-decoration: none; transition: .15s;
}
.nav__links > a:hover, .nav-drop > button:hover { color: var(--ink); background: rgba(45,38,25,.06); }
.nav-drop { position: relative; }
.nav-drop > button svg { width: 15px; height: 15px; transition: transform .18s; }
.nav-drop.open > button svg { transform: rotate(180deg); }
.nav-drop__menu {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 250px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: var(--shadow-md); padding: 8px; display: none; z-index: 90;
}
.nav-drop.open .nav-drop__menu { display: block; }
.nav-drop__menu a { display: flex; align-items: center; gap: 11px; padding: 10px 12px; border-radius: 10px; text-decoration: none; font-size: 14.5px; font-weight: 600; color: var(--ink-2); }
.nav-drop__menu a:hover { background: var(--paper-2); color: var(--ink); }
.nav-drop__menu a svg { width: 17px; height: 17px; color: var(--orange-deep); }
.nav-drop__menu small { display: block; font-weight: 500; color: var(--ink-3); font-size: 12.5px; margin-top: 1px; }
.nav__spacer { flex: 1; }
.nav__login { font-size: 15px; font-weight: 600; color: var(--ink-2); text-decoration: none; padding: 9px 14px; border-radius: 10px; }
.nav__login:hover { color: var(--ink); background: rgba(45,38,25,.06); }
.nav__burger { display: none; width: 44px; height: 44px; border: 1px solid var(--line-2); background: var(--card); border-radius: 11px; place-items: center; cursor: pointer; color: var(--ink); }
@media (max-width: 920px) {
  /* Phone top bar: keep "Log in" visible (as a bordered button) next to the
     burger. The nav links and the two large CTA buttons collapse into the
     burger menu; signup also stays reachable via the hero CTA and the bottom
     sticky CTA, so nothing is lost. */
  .nav__links { display: none; }
  .nav__login { display: inline-flex; align-items: center; border: 1px solid var(--line-2); }
  .nav__in > .btn { display: none; }
  .nav__burger { display: grid; }
}
.nav__mobile { display: none; background: var(--card); border-top: 1px solid var(--line); padding: 10px 20px 18px; }
.nav__mobile.open { display: block; }
.nav__mobile a { display: block; padding: 13px 6px; font-size: 16px; font-weight: 600; color: var(--ink-2); text-decoration: none; border-bottom: 1px solid var(--paper-2); }

/* sticky mobile CTA */
.sticky-cta {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 70;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: rgba(250,247,241,.94); backdrop-filter: blur(10px);
  border-top: 1px solid var(--line);
  transform: translateY(110%); transition: transform .3s var(--ease);
  display: none;
}
.sticky-cta.show { transform: none; }
.sticky-cta .btn { width: 100%; }
@media (max-width: 760px) { .sticky-cta { display: block; } }

/* =====================================================================
   2 · HERO
   ===================================================================== */
.hero { padding: 150px 0 80px; position: relative; overflow: clip; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(720px 420px at 82% 8%, rgba(255,107,53,.10), transparent 65%),
    radial-gradient(600px 480px at 6% 90%, rgba(79,70,229,.05), transparent 60%);
}
.hero__grid { display: grid; grid-template-columns: minmax(0, 10fr) minmax(0, 9fr); gap: 56px; align-items: center; position: relative; }
.hero h1 { font-size: clamp(2.4rem, 5vw, 3.9rem); font-weight: 700; }
.hero h1 em { font-style: normal; color: var(--orange-deep); position: relative; white-space: nowrap; }
.hero h1 em::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: .04em; height: .14em;
  background: var(--orange-soft); z-index: -1; border-radius: 3px;
}
.hero__lead { font-size: 18.5px; color: var(--ink-2); margin-top: 22px; max-width: 540px; }
.hero__lead strong { color: var(--ink); }
.hero .cta-row { margin-top: 30px; }
.hero__micro { margin-top: 14px; }

/* browser frame (shared) */
.frame { background: var(--app-surface); border: 1px solid var(--app-border); border-radius: var(--r-lg); box-shadow: var(--shadow-frame); overflow: hidden; }
.frame__bar { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--app-border); background: #fafbfd; }
.frame__dots { display: flex; gap: 5px; }
.frame__dots span { width: 9px; height: 9px; border-radius: 50%; background: #dfe2ea; }
.frame__addr { font-size: 12px; color: var(--app-ink-3); background: var(--app-bg); border-radius: 7px; padding: 4px 12px; font-weight: 600; }

/* mini-UI atoms (Aurora look) */
.mu { padding: 16px; background: var(--app-bg); font-size: 13px; color: var(--app-ink); display: grid; gap: 10px; }
.mu * { box-sizing: border-box; }
.mu__head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.mu__head h5 { margin: 0; font-family: var(--font-text); font-size: 14.5px; font-weight: 800; letter-spacing: -.01em; }
.mu__head p { font-size: 12px; color: var(--app-ink-2); margin-top: 1px; }
.mu-pill { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 700; background: var(--app-green-bg); color: var(--app-green); border-radius: 999px; padding: 4px 10px; }
.mu-pill .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.mu-card { background: var(--app-surface); border: 1px solid var(--app-border); border-radius: 11px; padding: 12px; }
.mu-row { display: flex; align-items: center; gap: 10px; }
.mu-ico { width: 32px; height: 32px; border-radius: 9px; display: grid; place-items: center; flex: none; }
.mu-ico svg { width: 16px; height: 16px; }
.mu-ico--indigo { background: var(--app-primary-50); color: var(--app-primary); }
.mu-ico--green { background: var(--app-green-bg); color: var(--app-green); }
.mu-ico--amber { background: var(--app-amber-bg); color: var(--app-amber); }
.mu-ico--sky { background: var(--app-sky-bg); color: var(--app-sky); }
.mu-ico--violet { background: var(--app-violet-bg); color: var(--app-violet); }
.mu-title { font-weight: 700; font-size: 12.5px; line-height: 1.3; }
.mu-meta { font-size: 11px; color: var(--app-ink-3); }
.mu-tag { font-size: 10.5px; font-weight: 700; border-radius: 999px; padding: 3px 9px; margin-left: auto; white-space: nowrap; }
.mu-tag--green { background: var(--app-green-bg); color: var(--app-green); }
.mu-tag--amber { background: var(--app-amber-bg); color: var(--app-amber); }
.mu-tag--indigo { background: var(--app-primary-50); color: var(--app-primary); }
.mu-bar { height: 6px; border-radius: 999px; background: #ecedf3; overflow: hidden; }
.mu-bar i { display: block; height: 100%; border-radius: inherit; background: var(--app-primary); }
.mu-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.mu-stat { background: var(--app-surface); border: 1px solid var(--app-border); border-radius: 11px; padding: 10px 12px; }
.mu-stat b { display: block; font-size: 17px; letter-spacing: -.02em; }
.mu-stat span { font-size: 11px; color: var(--app-ink-2); font-weight: 600; }

.hero__frame { position: relative; }
.hero__frame .frame { transform: rotate(.6deg); }
.hero__note {
  position: absolute; right: -10px; bottom: -18px; z-index: 2;
  background: var(--ink); color: var(--paper); font-size: 12.5px; font-weight: 700;
  border-radius: 11px; padding: 9px 14px; box-shadow: var(--shadow-md);
  display: flex; gap: 8px; align-items: center; transform: rotate(-1.2deg);
}
.hero__note svg { width: 15px; height: 15px; color: var(--orange); }

@media (max-width: 980px) {
  .hero { padding-top: 120px; }
  .hero__grid { grid-template-columns: 1fr; gap: 44px; }
  .hero__frame .frame { transform: none; }
  .hero__note { right: 6px; }
}

/* =====================================================================
   3 · CHAOS STRIP + time-loss counter
   ===================================================================== */
.chaos { background: var(--paper-2); border-block: 1px solid var(--line); padding: 72px 0; }
.chaos__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 52px; align-items: center; }
.chaos h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); font-weight: 700; }
.chaos p { color: var(--ink-2); margin-top: 16px; }
.chaos__anchor { margin-top: 22px; }

.chaos__visual { display: flex; align-items: center; gap: 18px; justify-content: center; flex-wrap: wrap; }
.chaos__pile { position: relative; width: 250px; height: 218px; flex: none; }
.chaos-chip {
  position: absolute; display: inline-flex; align-items: center; gap: 7px;
  background: var(--card); border: 1px solid var(--line-2); border-radius: 10px;
  font-size: 12.5px; font-weight: 700; color: var(--ink-2); padding: 8px 12px;
  box-shadow: var(--shadow-sm); text-decoration: line-through; text-decoration-color: rgba(232,80,28,.55); text-decoration-thickness: 2px;
}
.chaos-chip svg { width: 14px; height: 14px; color: var(--ink-3); }
.chaos__arrow { color: var(--ink-3); flex: none; }
.chaos__arrow svg { width: 34px; height: 34px; }
.chaos__one {
  flex: none; background: var(--card); border: 1px solid var(--line-2); border-radius: 13px;
  box-shadow: var(--shadow-md); padding: 12px 14px; min-width: 200px;
}
.chaos__one .tabbar { display: flex; gap: 5px; margin-bottom: 9px; }
.chaos__one .tabbar span { width: 8px; height: 8px; border-radius: 50%; background: var(--paper-3); }
.chaos__tab { display: flex; align-items: center; gap: 9px; background: var(--orange-ghost); border: 1px solid var(--orange-soft); border-radius: 9px; padding: 9px 12px; font-size: 13px; font-weight: 800; color: var(--ink); }
.chaos__tab svg { width: 16px; height: 16px; color: var(--orange-deep); }

/* time-loss mini calculator */
.loss {
  margin-top: 28px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 20px 22px; box-shadow: var(--shadow-sm); max-width: 460px;
}
.loss__row { display: flex; align-items: center; justify-content: space-between; gap: 14px; font-size: 14px; font-weight: 600; color: var(--ink-2); margin-bottom: 6px; }
.loss__row output { font-weight: 800; color: var(--ink); font-variant-numeric: tabular-nums; }
.loss input[type="range"] { width: 100%; accent-color: var(--orange); margin: 2px 0 14px; }
.loss__result { border-top: 1px dashed var(--line-2); padding-top: 14px; font-size: 14.5px; color: var(--ink-2); }
.loss__result b { color: var(--orange-deep); font-size: 19px; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }

@media (max-width: 980px) {
  .chaos__grid { grid-template-columns: 1fr; gap: 40px; }
  .chaos__visual { justify-content: flex-start; }
  .chaos__arrow { transform: rotate(90deg); width: 100%; text-align: center; }
}

/* =====================================================================
   4 · LIVE DEMO (dark peak)
   ===================================================================== */
.demo { background: var(--night); color: var(--night-text); padding: 100px 0; position: relative; overflow: clip; }
.demo::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(820px 460px at 50% -10%, rgba(255,107,53,.13), transparent 65%);
}
.demo .s-head { position: relative; }
.demo .eyebrow { color: var(--orange); }
.demo .s-title { color: var(--night-text); }
.demo .s-sub { color: var(--night-dim); }

.demo__stage { position: relative; max-width: 880px; margin-inline: auto; }
.demo__machine {
  background: var(--night-2); border: 1px solid var(--night-line); border-radius: var(--r-xl);
  box-shadow: 0 40px 90px -40px rgba(0,0,0,.8); overflow: hidden;
}
.demo__input { display: flex; gap: 12px; padding: 18px 20px; border-bottom: 1px solid var(--night-line); align-items: center; }
.demo__field {
  flex: 1; display: flex; align-items: center; gap: 10px;
  background: rgba(0,0,0,.3); border: 1px solid var(--night-line); border-radius: 12px;
  padding: 13px 16px; font-size: 15px; min-height: 50px; color: var(--night-text);
}
.demo__field svg { width: 17px; height: 17px; color: var(--orange); }
.demo__caret { display: inline-block; width: 2px; height: 1.15em; background: var(--orange); margin-left: 1px; animation: caret 1s steps(1) infinite; vertical-align: -0.2em; }
@keyframes caret { 50% { opacity: 0; } }
.demo__go { height: 50px; padding: 0 22px; border-radius: 12px; border: 0; background: var(--orange); color: #fff; font-family: var(--font-text); font-weight: 700; font-size: 15px; cursor: pointer; transition: .15s; }
.demo__go:hover { background: var(--orange-deep); }
.demo__goals { display: flex; flex-wrap: wrap; gap: 9px; padding: 16px 20px 4px; }
.demo__goals span { font-size: 12px; color: var(--night-dim); align-self: center; }
.demo-goal {
  border: 1px solid var(--night-line); background: rgba(255,255,255,.04); color: var(--night-text);
  font-family: var(--font-text); font-size: 13px; font-weight: 600; border-radius: 999px; padding: 8px 14px; cursor: pointer; transition: .15s;
}
.demo-goal:hover { border-color: rgba(255,107,53,.5); background: rgba(255,107,53,.1); }
.demo-goal.active { border-color: var(--orange); background: rgba(255,107,53,.16); color: #fff; }

.demo__build { padding: 20px; display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 7fr); gap: 16px; min-height: 330px; }
.demo__col-label { font-size: 11px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--night-dim); margin-bottom: 10px; }
.demo-step {
  display: flex; gap: 11px; align-items: flex-start;
  background: rgba(255,255,255,.04); border: 1px solid var(--night-line); border-radius: 12px;
  padding: 11px 13px; margin-bottom: 9px;
  opacity: 0; transform: translateY(10px); transition: opacity .45s var(--ease), transform .45s var(--ease);
}
.demo-step.on { opacity: 1; transform: none; }
.demo-step__n { width: 24px; height: 24px; border-radius: 8px; background: rgba(255,107,53,.16); color: var(--orange); display: grid; place-items: center; font-size: 11.5px; font-weight: 800; flex: none; }
.demo-step b { display: block; font-size: 13.5px; font-weight: 700; color: var(--night-text); }
.demo-step span { font-size: 11.5px; color: var(--night-dim); }
.demo-step__badges { margin-left: auto; display: flex; gap: 5px; flex: none; }
.demo-step__badges i { font-style: normal; font-size: 10px; font-weight: 700; border-radius: 6px; padding: 3px 7px; background: rgba(255,255,255,.07); color: var(--night-dim); }

.demo__exercise {
  background: var(--app-surface); color: var(--app-ink); border-radius: 14px; padding: 18px;
  opacity: 0; transform: translateY(12px); transition: opacity .5s var(--ease), transform .5s var(--ease);
  align-self: start;
}
.demo__exercise.on { opacity: 1; transform: none; }
.demo__exercise h6 { margin: 0 0 4px; font-family: var(--font-text); font-size: 14px; font-weight: 800; }
.demo__exercise .mu-meta { margin-bottom: 12px; display: block; }
.demo__sentence { font-size: 14.5px; line-height: 2.1; }
.gap-slot {
  display: inline-block; min-width: 86px; border-bottom: 2px solid var(--app-primary); text-align: center;
  font-weight: 700; color: var(--app-primary); padding: 0 6px;
}
.gap-slot.filled { color: var(--app-green); border-color: var(--app-green); background: var(--app-green-bg); border-radius: 6px 6px 0 0; }
.demo__choices { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.demo__choices span { border: 1px solid var(--app-border); border-radius: 999px; padding: 6px 13px; font-size: 12.5px; font-weight: 700; color: var(--app-ink-2); background: var(--app-bg); }

.demo__guard {
  margin: 26px auto 0; max-width: 880px;
  display: flex; gap: 14px; align-items: flex-start;
  background: rgba(255,255,255,.05); border: 1px solid var(--night-line); border-radius: var(--r-lg);
  padding: 18px 20px; position: relative;
}
.demo__guard svg { width: 22px; height: 22px; color: var(--orange); flex: none; margin-top: 2px; }
.demo__guard b { color: var(--night-text); }
.demo__guard p { color: var(--night-dim); font-size: 15px; }
.demo__cta { text-align: center; margin-top: 34px; position: relative; }

@media (max-width: 820px) {
  .demo__build { grid-template-columns: 1fr; }
  .demo__input { flex-direction: column; align-items: stretch; }
}

/* =====================================================================
   5 · FEATURE ZIGZAG ×4
   ===================================================================== */
.feat { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; align-items: center; padding: 56px 0; }
.feat + .feat { border-top: 1px dashed var(--line-2); }
.feat--flip .feat__copy { order: 2; }
.feat h3 { font-size: clamp(1.45rem, 2.4vw, 1.9rem); font-weight: 700; }
.feat__obj { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; color: var(--ink-3); background: var(--paper-2); border: 1px solid var(--line); border-radius: 999px; padding: 6px 13px; margin-bottom: 16px; }
.feat__obj svg { width: 14px; height: 14px; }
.feat p { color: var(--ink-2); margin-top: 14px; }
.feat .fact-line { margin-top: 20px; }
.feat__shot .frame { box-shadow: var(--shadow-md); }
@media (max-width: 920px) {
  .feat { grid-template-columns: 1fr; gap: 30px; padding: 44px 0; }
  .feat--flip .feat__copy { order: 0; }
}

/* dual-timezone lesson card */
.mu-tz { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }
.mu-tz div { background: var(--app-bg); border: 1px solid var(--app-border); border-radius: 9px; padding: 8px 10px; }
.mu-tz b { display: block; font-size: 13px; }
.mu-tz span { font-size: 10.5px; color: var(--app-ink-3); font-weight: 600; }
.mu-cal { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.mu-cal span { font-size: 9.5px; font-weight: 700; color: var(--app-ink-3); text-align: center; padding-bottom: 2px; }
.mu-cal i { font-style: normal; aspect-ratio: 1; display: grid; place-items: center; font-size: 10.5px; font-weight: 600; border-radius: 7px; color: var(--app-ink-2); background: var(--app-surface); border: 1px solid var(--app-border); }
.mu-cal i.has { background: var(--app-primary-50); color: var(--app-primary); border-color: transparent; font-weight: 800; }
.mu-cal i.today { background: var(--app-primary); color: #fff; border-color: transparent; font-weight: 800; }

/* homework verdicts */
.mu-answer { display: flex; align-items: center; gap: 8px; font-size: 12.5px; padding: 7px 0; border-bottom: 1px solid var(--app-bg); }
.mu-answer:last-child { border-bottom: 0; }
.mu-answer svg { width: 15px; height: 15px; flex: none; }
.mu-answer .ok { color: var(--app-green); }
.mu-answer .no { color: var(--app-rose); }
.mu-answer em { font-style: normal; font-weight: 700; }

/* mastery bars */
.mu-skill { display: grid; grid-template-columns: 92px 1fr 34px; align-items: center; gap: 10px; font-size: 12px; font-weight: 600; color: var(--app-ink-2); padding: 5px 0; }
.mu-skill output { font-weight: 800; color: var(--app-ink); font-size: 11.5px; text-align: right; }

/* library rows */
.mu-lib { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--app-bg); font-size: 12.5px; }
.mu-lib:last-child { border-bottom: 0; }

/* =====================================================================
   6 · ADAPTIVE LOOP
   ===================================================================== */
.loop-sec { background: var(--paper-2); border-block: 1px solid var(--line); }
.loop { max-width: 860px; margin-inline: auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; counter-reset: loopn; }
.loop__node { text-align: center; padding: 0 14px; position: relative; }
.loop__ico {
  width: 64px; height: 64px; border-radius: 18px; margin-inline: auto;
  background: var(--card); border: 1px solid var(--line-2); box-shadow: var(--shadow);
  display: grid; place-items: center; color: var(--orange-deep); position: relative; z-index: 1;
  transition: transform .4s var(--ease), border-color .4s, box-shadow .4s;
}
.loop__ico svg { width: 26px; height: 26px; }
.loop__node.lit .loop__ico { border-color: var(--orange); box-shadow: 0 10px 26px -10px rgba(232,80,28,.45); transform: translateY(-4px); }
.loop__node b { display: block; margin-top: 14px; font-size: 15px; font-weight: 800; letter-spacing: -.01em; }
.loop__node span { display: block; font-size: 13px; color: var(--ink-2); margin-top: 5px; line-height: 1.45; }
.loop__node::after {
  content: "→"; position: absolute; top: 22px; right: -11px; z-index: 2;
  font-size: 19px; color: var(--ink-3); font-weight: 700;
}
.loop__node:last-child::after { content: "↺"; right: auto; left: 50%; top: auto; bottom: -42px; transform: translateX(-50%); color: var(--orange-deep); }
.loop__caption { text-align: center; margin-top: 76px; font-size: 15px; color: var(--ink-2); font-weight: 600; max-width: 560px; margin-inline: auto; }
@media (max-width: 820px) {
  .loop { grid-template-columns: 1fr 1fr; row-gap: 36px; }
  .loop__node:nth-child(2)::after { content: "↓"; right: 50%; top: auto; bottom: -30px; transform: translateX(50%); }
  .loop__node:last-child::after { content: "↺"; bottom: -36px; }
  .loop__caption { margin-top: 64px; }
}

/* =====================================================================
   7 · MARKETPLACE
   ===================================================================== */
.market__grid { display: grid; grid-template-columns: minmax(0, 10fr) minmax(0, 9fr); gap: 60px; align-items: start; }
.market__copy p { color: var(--ink-2); margin-top: 16px; }
.market__copy p strong { color: var(--ink); }
.market__kicker { margin-top: 24px; font-weight: 800; color: var(--ink); font-size: 17px; font-family: var(--font-display); }
.fee-table { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--shadow); overflow: hidden; }
.fee-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 15px 20px; border-bottom: 1px solid var(--paper-2); font-size: 15px; }
.fee-row b { font-weight: 700; }
.fee-row span { color: var(--ink-2); font-weight: 600; font-variant-numeric: tabular-nums; }
.fee-row--us { background: var(--orange-ghost); border-bottom: 0; }
.fee-row--us b { color: var(--orange-deep); }
.fee-row--us span { color: var(--orange-deep); font-weight: 800; }
.fee-note { font-size: 12px; color: var(--ink-3); padding: 10px 20px 14px; background: var(--orange-ghost); }

/* commission calculator */
.fee-calc { margin-top: 18px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 20px 22px; box-shadow: var(--shadow-sm); }
.fee-calc__title { font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 14px; }
.fee-calc .loss__row { margin-bottom: 4px; }
.fee-calc input[type="range"] { width: 100%; accent-color: var(--orange); margin: 2px 0 12px; }
.fee-calc__out { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; border-top: 1px dashed var(--line-2); padding-top: 14px; }
.fee-calc__out div { background: var(--paper-2); border-radius: 11px; padding: 11px 14px; }
.fee-calc__out b { display: block; font-size: 19px; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.fee-calc__out span { font-size: 12px; color: var(--ink-3); font-weight: 700; }
.fee-calc__out .keep b { color: var(--app-green); }
.fee-calc__out .lose b { color: var(--app-rose); }
@media (max-width: 920px) { .market__grid { grid-template-columns: 1fr; gap: 36px; } }

/* =====================================================================
   8 · WHAT STUDENTS SEE (phone)
   ===================================================================== */
.students__grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 10fr); gap: 64px; align-items: center; }
.phone {
  width: 290px; margin-inline: auto; background: #111; border-radius: 38px; padding: 10px;
  box-shadow: var(--shadow-frame);
}
.phone__screen { background: var(--app-bg); border-radius: 30px; overflow: hidden; }
.phone__notch { height: 24px; display: grid; place-items: center; background: var(--app-surface); }
.phone__notch i { width: 78px; height: 17px; background: #111; border-radius: 999px; }
.phone .mu { padding: 14px; }
.mu-streak { display: flex; gap: 8px; }
.mu-streak div { flex: 1; text-align: center; background: var(--app-surface); border: 1px solid var(--app-border); border-radius: 11px; padding: 8px 4px; }
.mu-streak b { display: block; font-size: 15px; }
.mu-streak span { font-size: 9.5px; color: var(--app-ink-3); font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.mu-xp { display: flex; align-items: center; gap: 8px; font-size: 11px; font-weight: 700; color: var(--app-ink-2); }
.mu-xp .mu-bar { flex: 1; }
.mu-xp .mu-bar i { background: linear-gradient(90deg, #f59e0b, #ff6b35); }

.students__points { display: grid; gap: 18px; margin-top: 28px; }
.spoint { display: flex; gap: 15px; align-items: flex-start; }
.spoint__ico { width: 42px; height: 42px; border-radius: 13px; background: var(--orange-ghost); border: 1px solid var(--orange-soft); color: var(--orange-deep); display: grid; place-items: center; flex: none; }
.spoint__ico svg { width: 20px; height: 20px; }
.spoint b { font-size: 16px; font-weight: 800; letter-spacing: -.01em; }
.spoint p { color: var(--ink-2); font-size: 15px; margin-top: 3px; }
.students__caption { margin-top: 26px; font-weight: 700; color: var(--ink); background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--r); padding: 14px 18px; font-size: 15px; }
@media (max-width: 920px) { .students__grid { grid-template-columns: 1fr; gap: 40px; } }

/* =====================================================================
   9 · STUDENT DOOR
   ===================================================================== */
.sdoor { background: var(--paper-2); border-block: 1px solid var(--line); padding: 72px 0; }
.sdoor__cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 8px; }
.sdoor-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 24px; box-shadow: var(--shadow-sm); }
.sdoor-card svg { width: 24px; height: 24px; color: var(--orange-deep); }
.sdoor-card b { display: block; font-size: 16.5px; font-weight: 800; margin-top: 14px; letter-spacing: -.01em; }
.sdoor-card p { color: var(--ink-2); font-size: 14.5px; margin-top: 7px; }
.sdoor__cta { margin-top: 28px; }
@media (max-width: 820px) { .sdoor__cards { grid-template-columns: 1fr; } }

/* =====================================================================
   10 · BUILT IN PUBLIC (changelog)
   ===================================================================== */
.ship__grid { display: grid; grid-template-columns: minmax(0, 9fr) minmax(0, 10fr); gap: 60px; align-items: start; }
.ship__copy p { color: var(--ink-2); margin-top: 16px; }
.changelog { display: grid; gap: 0; border-left: 2px solid var(--line-2); }
.changelog__item { position: relative; padding: 0 0 26px 26px; }
.changelog__item:last-child { padding-bottom: 0; }
.changelog__item::before {
  content: ""; position: absolute; left: -7px; top: 5px; width: 12px; height: 12px; border-radius: 50%;
  background: var(--orange); border: 3px solid var(--paper);
}
.changelog__date { font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.changelog__item b { display: block; font-size: 16px; font-weight: 800; margin-top: 4px; letter-spacing: -.01em; }
.changelog__item p { font-size: 14.5px; color: var(--ink-2); margin-top: 4px; }
@media (max-width: 920px) { .ship__grid { grid-template-columns: 1fr; gap: 36px; } }

/* =====================================================================
   11 · HOW IT WORKS
   ===================================================================== */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: step; }
.step { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 26px; box-shadow: var(--shadow-sm); position: relative; }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-family: var(--font-display); font-size: 38px; font-weight: 700; color: var(--orange-soft);
  position: absolute; top: 14px; right: 20px; line-height: 1;
}
.step svg { width: 24px; height: 24px; color: var(--orange-deep); }
.step b { display: block; font-size: 17px; font-weight: 800; margin-top: 14px; letter-spacing: -.01em; }
.step p { color: var(--ink-2); font-size: 14.5px; margin-top: 8px; }
.steps-cta { margin-top: 34px; display: flex; justify-content: center; }
@media (max-width: 820px) { .steps { grid-template-columns: 1fr; } }

/* =====================================================================
   12 · FAQ
   ===================================================================== */
.faq { max-width: 780px; margin-inline: auto; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  padding: 20px 4px; cursor: pointer; list-style: none;
  font-size: 17px; font-weight: 700; letter-spacing: -.01em;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary svg { width: 19px; height: 19px; color: var(--ink-3); transition: transform .25s var(--ease); flex: none; }
.faq-item[open] summary svg { transform: rotate(45deg); color: var(--orange-deep); }
.faq-item div { padding: 0 4px 22px; color: var(--ink-2); font-size: 15.5px; max-width: 660px; }

/* =====================================================================
   13 · FINAL CTA + FOOTER
   ===================================================================== */
.final {
  background: linear-gradient(140deg, #ff7c46 0%, var(--orange) 42%, var(--orange-deep) 100%);
  color: #fff; padding: 110px 0; text-align: center; position: relative; overflow: clip;
}
.final::before { content: ""; position: absolute; inset: 0; background: radial-gradient(640px 320px at 50% 0%, rgba(255,255,255,.16), transparent 65%); pointer-events: none; }
.final h2 { font-size: clamp(2rem, 4.4vw, 3.2rem); font-weight: 700; position: relative; }
.final p { font-size: 18px; opacity: .92; margin: 18px auto 0; max-width: 480px; position: relative; }
.final .btn--paper { background: #fff; color: var(--orange-deep); height: 56px; padding: 0 32px; font-size: 17px; box-shadow: 0 18px 40px -12px rgba(120,40,0,.5); }
.final .btn--paper:hover { transform: translateY(-1px); }
.final__cta { margin-top: 32px; position: relative; }
.final__alt { margin-top: 20px; font-size: 14.5px; position: relative; }
.final__alt a { color: #fff; font-weight: 700; }

.foot { background: var(--night); color: var(--night-dim); padding: 60px 0 40px; font-size: 14px; }
.foot__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.foot .brand { color: var(--night-text); }
.foot .brand__mark { background: var(--orange); color: var(--night); }
.foot__tag { margin-top: 14px; max-width: 280px; line-height: 1.6; }
.foot h6 { margin: 0 0 14px; font-family: var(--font-text); font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--night-text); }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.foot a { color: var(--night-dim); text-decoration: none; }
.foot a:hover { color: var(--night-text); }
.foot__base { border-top: 1px solid var(--night-line); margin-top: 44px; padding-top: 22px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; }
.foot__lang { display: inline-flex; align-items: center; gap: 7px; border: 1px solid var(--night-line); border-radius: 999px; padding: 7px 14px; font-weight: 600; cursor: pointer; background: none; color: var(--night-dim); font-family: var(--font-text); font-size: 13px; }
.foot__lang svg { width: 15px; height: 15px; }
@media (max-width: 820px) { .foot__grid { grid-template-columns: 1fr 1fr; } }

/* =====================================================================
   2.5 · PICK YOUR PATH (teacher / student, equal columns)
   ===================================================================== */
.paths { padding: 8px 0 4px; }
.paths__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.path-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r-xl);
  padding: 30px 30px 28px; box-shadow: var(--shadow-sm); position: relative; overflow: hidden;
}
.path-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 3px; }
.path-card--teacher::before { background: var(--orange); }
.path-card--student::before { background: var(--app-primary); }
.path-card__label { display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.path-card--teacher .path-card__label { color: var(--orange-deep); }
.path-card--student .path-card__label { color: var(--app-primary); }
.path-card__label svg { width: 16px; height: 16px; }
.path-card h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); font-weight: 700; margin-top: 12px; }
.path-card > p { color: var(--ink-2); margin-top: 10px; }
.path-list { list-style: none; margin: 16px 0 0; padding: 0; display: grid; gap: 9px; }
.path-list li { display: flex; align-items: center; gap: 9px; font-size: 14.5px; font-weight: 600; color: var(--ink-2); }
.path-list svg { width: 16px; height: 16px; color: var(--app-green); flex: none; }
.path-card .cta-row { margin-top: 22px; }
@media (max-width: 760px) { .paths__grid { grid-template-columns: 1fr; } }

/* =====================================================================
   Bootstrap coexistence
   This file is loaded globally (after Bootstrap) only on the landing page.
   Bootstrap ships .nav / .btn / a rules that collide with the design's
   same-named classes; these .lp-scoped overrides win on specificity.
   ===================================================================== */
.lp .nav { display: block; }                 /* Bootstrap .nav forces display:flex */
.lp a { text-decoration: none; }             /* Bootstrap underlines links */
.lp .btn { text-transform: none; vertical-align: middle; }
.lp button { font-family: var(--font-text); }
/* the landing owns the viewport */
body:has(.lp) { background: var(--paper); }