/* Chăm marketing site - premium redesign (brief 2026-10-09).
   A lit, layered product world: dark violet-black bands with drifting glows and grain,
   light #F6F5FB sections with white panels, violet-tinted layered shadows, inner top highlights.
   Motion lives in site.js (GSAP + ScrollTrigger + Lenis, self-hosted in assets/vendor). */

:root {
  --night: #0e0a24;
  --ground: #f6f5fb;
  --panel: #ffffff;
  --ink: #14112b;
  --muted: #5b5873;
  --muted-2: #8a87a0;
  --line: #e7e4f1;
  --on-dark-muted: rgba(255, 255, 255, 0.68);
  --on-dark-faint: rgba(255, 255, 255, 0.45);

  --violet: #6044ff;
  --violet-2: #7b62ff;
  --violet-deep: #4a30e0;
  --violet-wash: #eeeaff;
  --acid: #a0ff83;
  --bubble: #ed9aff;
  --bubble-wash: #fcebff;

  --grad-violet: linear-gradient(135deg, #7b62ff 0%, #6044ff 55%, #5236f0 100%);
  --glass: rgba(255, 255, 255, 0.06);
  --glass-line: rgba(255, 255, 255, 0.1);

  --shadow: 0 1px 2px rgba(20, 10, 60, 0.08), 0 12px 24px -8px rgba(48, 24, 180, 0.18), 0 40px 80px -24px rgba(48, 24, 180, 0.28);
  --shadow-lg: 0 2px 4px rgba(20, 10, 60, 0.08), 0 18px 36px -10px rgba(48, 24, 180, 0.26), 0 60px 110px -30px rgba(48, 24, 180, 0.4);
  --shadow-dark: 0 2px 6px rgba(0, 0, 0, 0.3), 0 24px 48px -12px rgba(0, 0, 0, 0.5), 0 60px 120px -30px rgba(40, 20, 160, 0.55);
  --hl: inset 0 1px 0 rgba(255, 255, 255, 0.95);
  --hl-dark: inset 0 1px 0 rgba(255, 255, 255, 0.14);

  --font-display: "Montserrat", system-ui, sans-serif;
  --font-sans: "Be Vietnam Pro", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --r-outer: 28px;
  --r-inner: 16px;
  --max: 1200px;
  --gutter: 32px;
  --section: 140px;
  --nav-top: 16px;

  --expo: cubic-bezier(0.16, 1, 0.3, 1);
  --out: cubic-bezier(0.22, 0.8, 0.28, 1);
  --spring: cubic-bezier(0.34, 1.45, 0.56, 1);
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 110px; }
html:not(.lenis) { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--ground); color: var(--ink);
  font: 400 18px/1.62 var(--font-sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: clip;
}
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 800; letter-spacing: -0.03em; line-height: 1.02; text-wrap: balance; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; }
a { color: var(--violet); font-weight: 600; text-decoration: none; }
a:hover { color: var(--violet-deep); }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--violet-2); outline-offset: 3px; border-radius: 10px; }
.dark :focus-visible { outline-color: var(--acid); }
::selection { background: var(--acid); color: #000; }
.mono { font-family: var(--font-mono); font-weight: 500; letter-spacing: -0.01em; font-variant-numeric: tabular-nums; }
.vh { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 16px; top: -80px; z-index: 200; background: var(--acid); color: #000; padding: 10px 16px; border-radius: 999px; }
.skip:focus { top: 12px; color: #000; }
svg.i { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; flex: none; }

.wrap { width: 100%; max-width: calc(var(--max) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: var(--section) 0; position: relative; overflow-x: clip; }
.feat, .rowsect, .lift-wrap, .cta-section { overflow-x: clip; }
.section--tight { padding: 100px 0; }
.light { background: var(--ground); color: var(--ink); }
.white { background: #fff; }

/* ---------- dark bands: glows + grain ---------- */
.dark { background: var(--night); color: #fff; position: relative; isolation: isolate; overflow: hidden; }
.dark a:not(.btn) { color: #fff; }
.glows { position: absolute; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.glow { position: absolute; border-radius: 50%; filter: blur(100px); will-change: transform; }
.glow--violet { width: 820px; height: 820px; right: -6%; top: -18%; background: #6044ff; opacity: 0.55; animation: drift-a 52s ease-in-out infinite alternate; }
.glow--acid { width: 380px; height: 380px; left: 6%; bottom: -14%; background: #a0ff83; opacity: 0.35; filter: blur(110px); animation: drift-b 44s ease-in-out infinite alternate; }
.glow--bubble { width: 460px; height: 460px; left: 38%; top: 8%; background: #ed9aff; opacity: 0.38; filter: blur(120px); animation: drift-c 58s ease-in-out infinite alternate; }
.glows--quiet .glow--violet { opacity: 0.42; width: 640px; height: 640px; top: -40%; }
.glows--quiet .glow--acid { opacity: 0.22; }
.glows--quiet .glow--bubble { opacity: 0.26; top: -30%; }
.grain {
  position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: 0.05; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1.4 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
.gridlines {
  position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: 0.5;
  background-image: linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 65% 40%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 60% at 65% 40%, #000 20%, transparent 75%);
}
@keyframes drift-a { 0% { transform: translate(0, 0) scale(1); } 50% { transform: translate(-90px, 60px) scale(1.08); } 100% { transform: translate(-30px, 120px) scale(0.96); } }
@keyframes drift-b { 0% { transform: translate(0, 0); } 50% { transform: translate(120px, -60px) scale(1.1); } 100% { transform: translate(40px, -120px); } }
@keyframes drift-c { 0% { transform: translate(0, 0) scale(1); } 50% { transform: translate(-80px, 90px) scale(0.92); } 100% { transform: translate(70px, 30px) scale(1.06); } }

/* ---------- type ---------- */
.h-hero { font-size: clamp(44px, 5.4vw, 80px); line-height: 1.02; letter-spacing: -0.035em; }
.h-hero .line { display: block; overflow: hidden; padding-bottom: 0.1em; margin-bottom: -0.1em; }
.h-hero .line > span { display: inline-block; white-space: nowrap; }
.h2 { font-size: clamp(34px, 4.2vw, 56px); }
.h3 { font-size: clamp(22px, 2vw, 28px); letter-spacing: -0.02em; line-height: 1.15; }
.lede { font-size: 19px; line-height: 1.6; color: var(--muted); max-width: 54ch; }
.dark .lede { color: var(--on-dark-muted); }
.muted { color: var(--muted); }
.small { font-size: 15px; line-height: 1.5; color: var(--muted); }
.dark .small { color: var(--on-dark-faint); }
.head { max-width: 760px; }
.head .h2 { margin-top: 18px; }
.head .lede { margin-top: 20px; }
.head--center { margin: 0 auto; text-align: center; }
.head--center .lede { margin-left: auto; margin-right: auto; }

.badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px 7px 10px; border-radius: 999px;
  font: 600 14px/1 var(--font-sans); background: #fff; color: var(--ink); border: 1px solid var(--line);
  box-shadow: var(--hl), 0 6px 16px -8px rgba(48, 24, 180, 0.25);
}
.badge svg.i { width: 16px; height: 16px; color: var(--violet); }
.dark .badge { background: var(--glass); border-color: var(--glass-line); color: #fff; box-shadow: var(--hl-dark); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); }
.dark .badge svg.i { color: var(--acid); }

/* ---------- buttons ---------- */
.btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 54px; padding: 0 26px; border-radius: 999px; border: 1px solid transparent;
  font: 600 16px/1 var(--font-sans); letter-spacing: -0.005em; text-decoration: none; white-space: nowrap;
  transition: transform 220ms var(--out), box-shadow 220ms var(--out), background-color 220ms var(--out), color 220ms var(--out);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: scale(0.97); }
.btn svg.i { width: 18px; height: 18px; }
.btn--acid { background: var(--acid); color: #0b0a16; box-shadow: inset 0 1px 0 rgba(255,255,255,0.7), inset 0 -2px 0 rgba(0,0,0,0.08), 0 10px 30px -10px rgba(160, 255, 131, 0.65); }
.btn--acid:hover { background: #b2ff99; color: #0b0a16; box-shadow: inset 0 1px 0 rgba(255,255,255,0.7), 0 14px 36px -10px rgba(160, 255, 131, 0.8); }
.dark a.btn--acid, .dark a.btn--acid:hover { color: #0b0a16; }
.btn--glass { background: rgba(255,255,255,0.08); color: #fff; border-color: rgba(255,255,255,0.16); box-shadow: var(--hl-dark); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); }
.btn--glass:hover { background: rgba(255,255,255,0.14); color: #fff; }
.btn--violet { background: var(--grad-violet); color: #fff; box-shadow: inset 0 1px 0 rgba(255,255,255,0.3), 0 12px 28px -10px rgba(96, 68, 255, 0.7); }
.btn--violet:hover { color: #fff; box-shadow: inset 0 1px 0 rgba(255,255,255,0.3), 0 18px 36px -10px rgba(96, 68, 255, 0.85); }
.btn--white { background: #fff; color: var(--ink); border-color: var(--line); box-shadow: var(--hl), 0 8px 20px -10px rgba(48,24,180,0.3); }
.btn--white:hover { color: var(--ink); }
.btn--sm { min-height: 42px; padding: 0 18px; font-size: 14px; }
.btn[disabled] { opacity: 0.4; cursor: not-allowed; transform: none; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.text-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--violet); }
.text-link svg.i { width: 16px; height: 16px; transition: transform 200ms var(--out); }
.text-link:hover svg.i { transform: translateX(3px); }

/* ---------- icon tiles ---------- */
.tile {
  position: relative; display: grid; place-items: center; width: 56px; height: 56px; flex: none; border-radius: 17px;
  background: linear-gradient(150deg, #8f7bff 0%, #6044ff 48%, #4a2fe6 100%); color: #fff;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.45), inset 0 -8px 14px rgba(25, 8, 110, 0.35), 0 12px 24px -8px rgba(72, 40, 220, 0.6), 0 3px 6px rgba(40, 20, 140, 0.25);
}
.tile::after { content: ""; position: absolute; inset: 3px 6px auto; height: 45%; border-radius: 14px 14px 30px 30px; background: linear-gradient(180deg, rgba(255,255,255,0.28), rgba(255,255,255,0)); pointer-events: none; }
.tile svg.i { width: 26px; height: 26px; stroke-width: 2.1; position: relative; z-index: 1; filter: drop-shadow(0 2px 2px rgba(20, 6, 90, 0.35)); }
.tile--float svg.i { animation: glyph-float 5s ease-in-out infinite; }
.tile--sm { width: 44px; height: 44px; border-radius: 13px; }
.tile--sm svg.i { width: 21px; height: 21px; }
@keyframes glyph-float { 0%, 100% { transform: translateY(2px); } 50% { transform: translateY(-2px); } }

/* ---------- panels ---------- */
.panel { background: var(--panel); border-radius: var(--r-outer); box-shadow: var(--hl), var(--shadow); border: 1px solid rgba(231, 228, 241, 0.7); }
.panel--glass { background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04)); border: 1px solid var(--glass-line); box-shadow: var(--hl-dark), var(--shadow-dark); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); color: #fff; border-radius: var(--r-outer); }
.panel--night { background: linear-gradient(180deg, #1d1546 0%, #130d33 100%); border: 1px solid rgba(255,255,255,0.1); box-shadow: var(--hl-dark), var(--shadow-dark); color: #fff; border-radius: var(--r-outer); }
.chrome { display: flex; align-items: center; gap: 10px; padding: 14px 18px; border-bottom: 1px solid var(--line); font-size: 14px; font-weight: 600; }
.panel--night .chrome, .panel--glass .chrome { border-bottom-color: rgba(255,255,255,0.09); }
.dots { display: inline-flex; gap: 6px; margin-right: 4px; }
.dots i { width: 10px; height: 10px; border-radius: 50%; background: #e3e0ee; }
.panel--night .dots i { background: rgba(255,255,255,0.16); }
.chrome .grow { flex: 1; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px; border-radius: 999px; font: 600 13px/1 var(--font-sans); background: var(--ground); color: var(--ink); white-space: nowrap; }
.pill--violet { background: var(--violet-wash); color: var(--violet-deep); }
.pill--acid { background: var(--acid); color: #0b0a16; }
.pill--bubble { background: var(--bubble); color: #0b0a16; }
.pill--dark { background: rgba(255,255,255,0.08); color: #fff; }
.pill svg.i { width: 14px; height: 14px; }

/* mistake / fix grammar */
.miss { position: relative; text-decoration: underline wavy var(--bubble); text-decoration-thickness: 2px; text-underline-offset: 5px; text-decoration-skip-ink: none; }
.strike { text-decoration: line-through; text-decoration-color: var(--bubble); text-decoration-thickness: 3px; color: var(--muted-2); }
.fix { background: var(--acid); color: #0b0a16; border-radius: 7px; padding: 1px 6px; text-decoration: none; -webkit-box-decoration-break: clone; box-decoration-break: clone; }

/* ---------- nav ---------- */
.nav {
  position: fixed; z-index: 100; top: var(--nav-top); left: 50%; width: min(1140px, calc(100% - 32px)); transform: translateX(-50%);
  transition: top 320ms var(--out), width 320ms var(--out);
}
.nav-pill {
  display: flex; align-items: center; gap: 8px; height: 64px; padding: 0 10px 0 22px; border-radius: 999px;
  background: rgba(20, 14, 52, 0.42); border: 1px solid rgba(255,255,255,0.12); color: #fff;
  box-shadow: var(--hl-dark), 0 16px 40px -20px rgba(0,0,0,0.6);
  backdrop-filter: blur(20px) saturate(140%); -webkit-backdrop-filter: blur(20px) saturate(140%);
  transition: background-color 320ms var(--out), color 320ms var(--out), border-color 320ms var(--out), height 320ms var(--out), box-shadow 320ms var(--out);
}
.nav.is-solid { top: 10px; width: min(1080px, calc(100% - 32px)); }
.nav.is-solid .nav-pill { height: 58px; background: rgba(255,255,255,0.96); color: var(--ink); border-color: rgba(231,228,241,0.9); box-shadow: var(--hl), var(--shadow); }
.nav-links { display: flex; gap: 2px; margin-left: auto; margin-right: 10px; }
.nav-links a { padding: 10px 14px; border-radius: 999px; color: inherit; font: 500 15px/1 var(--font-sans); opacity: 0.86; transition: background-color 200ms, opacity 200ms; }
.nav-links a:hover { opacity: 1; background: rgba(255,255,255,0.1); color: inherit; }
.nav.is-solid .nav-links a:hover { background: var(--ground); }
.nav-links a[aria-current="page"] { opacity: 1; background: rgba(255,255,255,0.12); }
.nav.is-solid .nav-links a[aria-current="page"] { background: var(--violet-wash); color: var(--violet-deep); }
.nav .btn--acid { min-height: 44px; padding: 0 18px; font-size: 14px; }
.menu-btn { display: none; width: 44px; height: 44px; border: 0; border-radius: 999px; background: rgba(255,255,255,0.1); color: inherit; place-items: center; }
.nav.is-solid .menu-btn { background: var(--ground); }
.menu-btn .i-close { display: none; }
.nav.is-open .menu-btn .i-open { display: none; }
.nav.is-open .menu-btn .i-close { display: block; }
.menu {
  display: none; margin-top: 10px; padding: 10px; border-radius: 24px; background: #fff; color: var(--ink);
  box-shadow: var(--hl), var(--shadow-lg); border: 1px solid var(--line);
}
.menu a { display: flex; justify-content: space-between; align-items: center; padding: 16px 14px; border-radius: 14px; color: var(--ink); font: 700 20px/1.1 var(--font-display); letter-spacing: -0.02em; }
.menu a:hover, .menu a[aria-current="page"] { background: var(--ground); color: var(--ink); }
.menu a svg.i { color: var(--violet); }

/* logo */
.logo { display: inline-flex; align-items: center; gap: 9px; color: inherit; text-decoration: none; flex: none; }
.logo:hover { color: inherit; }
.logo-mark { width: 30px; height: 30px; overflow: visible; }
.logo-mark .back { fill: var(--violet); }
.logo-mark .front { fill: var(--lg-front, #fff); transition: fill 320ms; }
.logo-mark .arc { fill: none; stroke: var(--lg-arc, #000); stroke-width: 6; stroke-linecap: round; transition: stroke 320ms; }
.wordmark { display: inline-flex; align-items: flex-end; font: 900 23px/1 var(--font-display); letter-spacing: -0.025em; }
.wordmark .a { position: relative; display: inline-block; }
.wordmark .a svg { position: absolute; left: 50%; bottom: 13.8px; width: 13.8px; height: 6px; transform: translateX(-50%); overflow: visible; }
.wordmark .a path { fill: none; stroke: var(--lg-breve, var(--acid)); stroke-width: 11; stroke-linecap: round; transition: stroke 320ms; }
.nav.is-solid .logo { --lg-front: #000; --lg-arc: var(--acid); --lg-breve: var(--violet); }

/* ---------- hero ---------- */
.hero { padding: 168px 0 40px; min-height: min(100vh, 980px); }
.hero-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 24px; align-items: center; }
.hero-copy { grid-column: 1 / 7; position: relative; z-index: 2; }
.hero-copy .h-hero { margin-top: 26px; }
.hero-copy .lede { margin-top: 26px; max-width: 44ch; }
.hero-copy .actions { margin-top: 36px; }
.hero-note { margin-top: 22px; display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--on-dark-faint); }
.hero-note svg.i { width: 16px; height: 16px; color: var(--acid); }
.hero-visual { grid-column: 7 / 13; position: relative; margin-right: calc(-1 * var(--gutter) - 60px); }
.replay {
  position: absolute; left: 8px; bottom: -10px; z-index: 5; display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 14px 0 12px;
  border-radius: 999px; border: 1px solid rgba(255,255,255,0.14); background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.8);
  font: 500 13px/1 var(--font-sans); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); transition: background-color 200ms, color 200ms;
}
.replay:hover { background: rgba(255,255,255,0.12); color: #fff; }
.replay svg.i { width: 15px; height: 15px; }

/* the 3D workspace */
.ws { position: relative; width: 100%; height: calc(620px * var(--s, 1)); }
.ws-stage { position: absolute; left: 0; top: 0; width: 780px; height: 620px; transform: scale(var(--s, 1)); transform-origin: 0 0; perspective: 1600px; perspective-origin: 50% 40%; }
.ws-group { position: absolute; inset: 0; transform-style: preserve-3d; transform: rotateY(-14deg) rotateX(8deg); }
.ws-item { position: absolute; transform-style: preserve-3d; }
.ws-essay { left: 0; top: 40px; width: 440px; transform: translateZ(-120px); }
.ws-feedback { left: 384px; top: 206px; width: 392px; transform: translateZ(0); }
.ws-deck { left: 28px; top: 396px; width: 250px; height: 168px; transform: translateZ(140px); }

.essay { background: #fff; color: var(--ink); border-radius: 22px; box-shadow: var(--hl), 0 30px 60px -20px rgba(10, 4, 50, 0.65), 0 8px 18px rgba(10, 4, 50, 0.25); }
.timer { display: inline-flex; align-items: center; gap: 7px; padding: 6px 11px; border-radius: 999px; background: var(--ground); color: var(--ink); font: 500 14px/1 var(--font-mono); font-variant-numeric: tabular-nums; }
.timer::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--bubble); box-shadow: 0 0 0 3px rgba(237,154,255,0.25); }
.essay-body { padding: 16px 22px 20px; }
.essay-prompt { font-size: 13px; line-height: 1.45; color: var(--muted); padding: 10px 12px; border-radius: 12px; background: var(--ground); }
.essay-text { margin-top: 14px; font-size: 15.5px; line-height: 1.75; color: #2a2645; }
.typed { position: relative; color: var(--ink); font-weight: 500; }
.typed .ch.off { opacity: 0; }
.caret { display: inline-block; width: 2px; height: 1.1em; margin: 0 1px -0.18em; background: var(--violet); animation: caret 1s steps(1) infinite; }
@keyframes caret { 50% { opacity: 0; } }
.has { position: relative; display: inline-block; isolation: isolate; }
.has .hl { position: absolute; left: -3px; right: -3px; bottom: 1px; height: 50%; border-radius: 4px; background: var(--bubble); opacity: 0.7; z-index: -1; transform-origin: left; }
.bubble-tip {
  position: absolute; left: 50%; bottom: calc(100% + 10px); transform: translateX(-50%); z-index: 3; white-space: nowrap;
  display: flex; align-items: center; gap: 8px; padding: 7px 12px 7px 7px; border-radius: 14px; background: var(--night); color: #fff;
  font: 500 13px/1 var(--font-sans); box-shadow: 0 14px 30px -10px rgba(10,4,50,0.6); transform-origin: 50% 120%;
}
.bubble-tip::after { content: ""; position: absolute; left: 50%; top: 100%; margin-left: -6px; border: 6px solid transparent; border-top-color: var(--night); }
.bubble-tip b { background: var(--acid); color: #0b0a16; padding: 5px 8px; border-radius: 8px; font-weight: 700; }
.essay-foot { display: flex; justify-content: space-between; padding: 12px 22px 16px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }

.feedback { padding: 0 0 18px; border-radius: 22px; }
.feedback .chrome { padding: 16px 20px; }
.fb-top { display: flex; align-items: center; gap: 18px; padding: 18px 20px 6px; }
.ring { position: relative; width: 92px; height: 92px; flex: none; }
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring .track { fill: none; stroke: rgba(255,255,255,0.1); stroke-width: 8; }
.ring .val { fill: none; stroke: url(#ringGrad); stroke-width: 8; stroke-linecap: round; }
.ring b { position: absolute; inset: 0; display: grid; place-items: center; font: 500 26px/1 var(--font-mono); }
.fb-top p { font-size: 14px; color: var(--on-dark-muted); line-height: 1.45; }
.fb-top p strong { display: block; color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 3px; }
.crit { display: grid; grid-template-columns: 1fr 44px; gap: 6px 12px; align-items: center; padding: 10px 20px 0; }
.crit span { font-size: 13.5px; color: var(--on-dark-muted); }
.crit .mono { grid-row: 1 / 3; grid-column: 2; text-align: right; font-size: 19px; color: #fff; }
.bar { height: 7px; border-radius: 99px; background: rgba(255,255,255,0.09); overflow: hidden; }
.bar i { display: block; height: 100%; width: 100%; border-radius: 99px; background: linear-gradient(90deg, #7b62ff, #a48fff); transform-origin: left; }
.bar i.w778 { transform: scaleX(0.778); } .bar i.w722 { transform: scaleX(0.722); } .bar i.w667 { transform: scaleX(0.667); }
.crit.is-up .bar i { background: linear-gradient(90deg, #7b62ff, var(--acid)); }
.crit.is-up .mono { color: var(--acid); }

.deck { position: relative; width: 100%; height: 100%; transform-style: preserve-3d; }
.dcard { position: absolute; inset: 0; border-radius: 20px; display: grid; align-content: center; justify-items: start; gap: 8px; padding: 22px 24px; transform-origin: 30% 80%; }
.dcard--3 { background: #4a30e0; transform: translateZ(-8px) rotate(9deg) translate(26px, -14px); box-shadow: 0 4px 0 #2f1aa8, 0 20px 40px -12px rgba(10,4,50,0.6); }
.dcard--2 { background: var(--violet); transform: translateZ(-4px) rotate(4.5deg) translate(12px, -6px); box-shadow: 0 4px 0 #3a22c4, 0 16px 30px -12px rgba(10,4,50,0.5); }
.dcard--1 { background: #0b0816; color: #fff; box-shadow: inset 0 1px 0 rgba(255,255,255,0.14), 0 4px 0 #000, 0 26px 50px -14px rgba(10,4,50,0.8); border: 1px solid rgba(255,255,255,0.08); }
.dcard b { font: 800 26px/1.05 var(--font-display); letter-spacing: -0.025em; }
.dcard .mono { font-size: 13px; color: var(--acid); }
.breve { position: absolute; right: 18px; top: 16px; width: 34px; height: 17px; overflow: visible; }
.breve path { fill: none; stroke: var(--acid); stroke-width: 9; stroke-linecap: round; }
.fly { position: absolute; left: 0; top: 0; width: 250px; height: 168px; transform-style: preserve-3d; opacity: 0; pointer-events: none; }
.fly .face { position: absolute; inset: 0; border-radius: 20px; backface-visibility: hidden; -webkit-backface-visibility: hidden; display: grid; align-content: center; justify-items: start; gap: 8px; padding: 22px 24px; }
.fly .face--front { background: #0b0816; color: #fff; border: 1px solid rgba(255,255,255,0.1); box-shadow: 0 30px 60px -16px rgba(10,4,50,0.8); }
.fly .face--back { background: var(--grad-violet); transform: rotateY(180deg); place-items: center; justify-items: center; }
.fly .face--back svg { width: 70px; height: 35px; overflow: visible; }
.fly .face--back path { fill: none; stroke: var(--acid); stroke-width: 9; stroke-linecap: round; }

.chip {
  display: inline-flex; align-items: center; gap: 8px; padding: 9px 14px 9px 9px; border-radius: 999px; white-space: nowrap;
  background: rgba(30, 22, 72, 0.78); border: 1px solid rgba(255,255,255,0.14); color: #fff; font: 500 14px/1 var(--font-sans);
  box-shadow: var(--hl-dark), 0 18px 36px -14px rgba(0,0,0,0.7);
}
.chip .dot { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: rgba(255,255,255,0.1); }
.chip .dot svg.i { width: 14px; height: 14px; }
.chip .mono { color: var(--acid); }
.chip--acid .dot { background: var(--acid); color: #0b0a16; }
.chip--bubble .dot { background: var(--bubble); color: #0b0a16; }
.chip--violet .dot { background: var(--violet); }

.ws-chip { position: absolute; }
.ws-c1 { left: -26px; top: 0; transform: translateZ(80px); }
.ws-c2 { left: 520px; top: 120px; transform: translateZ(60px); }
.ws-c3 { left: 596px; top: 590px; transform: translateZ(100px); }
.ws-c4 { left: 262px; top: 452px; transform: translateZ(200px); }

/* exam strip */
.strip { padding: 28px 0 64px; }
.strip-row { display: flex; align-items: center; gap: 40px; }
.strip-label { flex: none; font-size: 15px; color: var(--on-dark-faint); }
.marquee { position: relative; flex: 1; overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.marquee-track { display: flex; width: max-content; animation: marquee 38s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span { padding: 0 34px; font: 800 clamp(26px, 3vw, 40px)/1 var(--font-display); letter-spacing: -0.03em; color: rgba(255,255,255,0.32); white-space: nowrap; display: inline-flex; align-items: center; gap: 34px; }
.marquee-track span::after { content: ""; width: 9px; height: 9px; border-radius: 50%; background: rgba(160,255,131,0.6); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- problem ---------- */
.split { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 24px; align-items: center; }
.split-text { grid-column: 1 / 6; }
.split-visual { grid-column: 6 / 13; }
.split--rev .split-text { grid-column: 8 / 13; grid-row: 1; }
.split--rev .split-visual { grid-column: 1 / 8; grid-row: 1; }
.split-text .lede { margin-top: 22px; }
.points { margin-top: 30px; display: grid; gap: 14px; }
.points li { display: flex; gap: 14px; align-items: flex-start; font-size: 17px; color: var(--muted); }
.points li b { color: var(--ink); font-weight: 600; }
.ck { display: grid; place-items: center; width: 26px; height: 26px; flex: none; border-radius: 9px; background: var(--violet-wash); color: var(--violet); margin-top: 1px; }
.ck svg.i { width: 15px; height: 15px; stroke-width: 2.6; }

.clockpage { position: relative; padding: 34px 34px 30px; }
.clockpage .chrome { margin: -34px -34px 24px; padding: 18px 26px; }
.timer--late { background: var(--bubble); color: #0b0a16; }
.timer--late::before { background: #0b0a16; box-shadow: none; }
.clockpage .essay-text { font-size: 18px; line-height: 2; margin-top: 0; }
.clockface { position: absolute; right: -30px; top: -40px; width: 150px; height: 150px; border-radius: 50%; background: #fff; box-shadow: var(--hl), var(--shadow-lg); display: grid; place-items: center; }
.clockface svg { width: 118px; height: 118px; transform: rotate(-90deg); }
.clockface .t { fill: none; stroke: var(--ground); stroke-width: 10; }
.clockface .v { fill: none; stroke: var(--bubble); stroke-width: 10; stroke-linecap: round; }
.clockface b { position: absolute; font: 500 24px/1 var(--font-mono); }
.clockface small { position: absolute; top: 92px; font-size: 11px; color: var(--muted); }
.margin-notes { display: grid; gap: 10px; margin-top: 22px; padding-top: 20px; border-top: 1px dashed var(--line); }
.margin-notes li { display: flex; gap: 12px; align-items: baseline; font-size: 15px; color: var(--muted); }
.margin-notes .pill { flex: none; }

/* ---------- how it works ---------- */
.how-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 24px; align-items: center; margin-top: 64px; }
.how-steps { grid-column: 1 / 5; position: relative; padding-left: 34px; }
.how-line { position: absolute; left: 9px; top: 12px; bottom: 12px; width: 2px; background: rgba(255,255,255,0.1); border-radius: 2px; }
.how-line i { position: absolute; inset: 0; background: linear-gradient(180deg, var(--acid), var(--violet-2)); transform-origin: top; transform: scaleY(0.12); border-radius: 2px; }
.how-step { position: relative; padding: 18px 0 30px; opacity: 0.38; transition: opacity 400ms var(--out); }
.how-step::before { content: ""; position: absolute; left: -31px; top: 26px; width: 14px; height: 14px; border-radius: 50%; background: var(--night); border: 2px solid rgba(255,255,255,0.3); transition: background-color 300ms, border-color 300ms, box-shadow 300ms; }
.how-step.is-on { opacity: 1; }
.how-step.is-on::before { background: var(--acid); border-color: var(--acid); box-shadow: 0 0 0 6px rgba(160,255,131,0.15); }
.how-step .num, .how-block .num { font: 500 14px/1 var(--font-mono); color: var(--acid); }
.step-hit { position: absolute; inset: 0 0 0 -40px; width: calc(100% + 40px); border: 0; background: none; border-radius: 18px; cursor: pointer; z-index: 1; }
.how-step:not(.is-on):hover { opacity: 0.6; }
.how-step h3 { margin-top: 10px; font-size: 30px; }
.how-step p { margin-top: 10px; color: var(--on-dark-muted); font-size: 17px; max-width: 34ch; }
.how-visual { grid-column: 5 / 13; padding-left: 24px; }

.laptop { position: relative; width: 100%; max-width: 760px; margin-left: auto; }
.lid { position: relative; padding: 14px 14px 18px; border-radius: 26px 26px 14px 14px; background: linear-gradient(160deg, #3b3a4a 0%, #1d1c27 45%, #2a2936 100%); box-shadow: inset 0 1px 0 rgba(255,255,255,0.18), inset 0 0 0 1px rgba(255,255,255,0.05), 0 50px 100px -30px rgba(0,0,0,0.8), 0 30px 60px -20px rgba(70,40,220,0.45); }
.lid::before { content: ""; position: absolute; top: 5px; left: 50%; width: 5px; height: 5px; margin-left: -2.5px; border-radius: 50%; background: #0c0b12; box-shadow: inset 0 0 0 1.5px #2a2a38; }
.screen { position: relative; aspect-ratio: 16 / 10; border-radius: 12px; overflow: hidden; background: #f6f5fb; container-type: inline-size; color: var(--ink); }
.screen::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(118deg, rgba(255,255,255,0.22) 0%, rgba(255,255,255,0.05) 32%, rgba(255,255,255,0) 46%); }
.base { position: relative; height: 18px; margin: 0 -7%; border-radius: 2px 2px 22px 22px; background: linear-gradient(180deg, #d9d9e3 0%, #a9a9b8 55%, #6f6f80 100%); box-shadow: inset 0 1px 0 rgba(255,255,255,0.8), 0 30px 40px -18px rgba(0,0,0,0.7); }
.base::before { content: ""; position: absolute; left: 50%; top: 0; width: 16%; height: 7px; margin-left: -8%; border-radius: 0 0 10px 10px; background: linear-gradient(180deg, #8d8d9c, #b9b9c6); }
.scr { position: absolute; inset: 0; opacity: 0; transition: opacity 500ms var(--out), transform 600ms var(--out); transform: scale(1.02); font-size: clamp(7px, 2.45cqw, 17px); }
.scr.is-on { opacity: 1; transform: none; }
.how-block .scr { opacity: 1; transform: none; }
.app { display: grid; grid-template-columns: 15% 1fr; height: 100%; }
.app-side { background: #fff; border-right: 1px solid var(--line); padding: 1.3em 0.9em; display: grid; align-content: start; gap: 0.6em; }
.app-side .logo-mark { width: 2.2em; height: 2.2em; margin-bottom: 0.9em; --lg-front: #000; --lg-arc: var(--acid); }
.app-side i { display: block; height: 0.85em; border-radius: 99px; background: var(--ground); }
.app-side i.on { background: var(--violet-wash); }
.app-main { padding: 1.4em 1.7em; display: grid; align-content: start; gap: 1.1em; min-width: 0; }
.app-top { display: flex; align-items: center; gap: 0.8em; font-weight: 700; font-size: 1.05em; }
.app-top .grow { flex: 1; }
.app-top .timer { font-size: 0.9em; padding: 0.45em 0.8em; }
.app-top .pill { font-size: 0.8em; padding: 0.45em 0.8em; }
.app-card { background: #fff; border-radius: 1.1em; padding: 1.2em 1.4em; box-shadow: 0 1px 2px rgba(20,10,60,0.06), 0 10px 24px -12px rgba(48,24,180,0.2); }
.app-card p { font-size: 1em; line-height: 1.75; color: #2a2645; }
.app-row { display: flex; justify-content: space-between; align-items: center; gap: 1em; font-size: 0.95em; font-weight: 600; }
.app-row .mono { font-size: 1.5em; }
.app-list { display: grid; gap: 0.55em; }
.app-list li { display: flex; gap: 0.8em; align-items: baseline; font-size: 0.88em; color: var(--muted); }
.app-list li b { color: var(--ink); min-width: 7em; }
.app-fc { display: grid; place-items: center; text-align: center; gap: 0.4em; padding: 3.2em 1em; border-radius: 1.2em; background: var(--grad-violet); color: #fff; box-shadow: 0 16px 30px -14px rgba(72,40,220,0.7); }
.app-fc b { font: 800 2.3em/1.05 var(--font-display); letter-spacing: -0.03em; }
.app-fc span { font-size: 0.9em; opacity: 0.85; }
.app-grades { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.55em; }
.app-grades span { display: grid; justify-items: center; gap: 0.3em; padding: 0.75em 0.3em; border-radius: 0.9em; font: 700 0.95em/1 var(--font-sans); }
.app-grades span small { font: 500 0.75em/1 var(--font-mono); opacity: 0.8; }
.g-again { background: var(--bubble); color: #0b0a16; }
.g-hard { background: #8f7bff; color: #fff; }
.g-good { background: var(--violet); color: #fff; }
.g-easy { background: var(--acid); color: #0b0a16; }
.how-stack { display: none; }

/* ---------- bento ---------- */
.bento { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 56px;
  grid-template-areas: "coach coach lang" "labs words lang" "progress progress offline"; }
.b-coach { grid-area: coach; } .b-lang { grid-area: lang; } .b-labs { grid-area: labs; } .b-words { grid-area: words; } .b-progress { grid-area: progress; } .b-offline { grid-area: offline; }
.btile { position: relative; display: flex; flex-direction: column; padding: 28px; overflow: hidden; transition: transform 300ms var(--out), box-shadow 300ms var(--out); }
.btile:hover { transform: translateY(-4px); box-shadow: var(--hl), var(--shadow-lg); }
.btile-head { display: flex; gap: 16px; align-items: flex-start; }
.btile h3 { font-size: 22px; letter-spacing: -0.02em; }
.btile p { margin-top: 6px; font-size: 15.5px; line-height: 1.55; color: var(--muted); }
.btile .text-link { padding-top: 18px; font-size: 15px; }
.bvis { margin-top: 22px; flex: 1; display: grid; place-items: center; min-height: 170px; border-radius: 20px; background: var(--ground); position: relative; overflow: hidden; }
.bvis--dark { background: linear-gradient(180deg, #1c1444, #110b2c); color: #fff; }
.paused, .paused * { animation-play-state: paused !important; }

.rings { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 26px; width: 100%; }
.mring { display: grid; justify-items: center; gap: 10px; text-align: center; }
.mring .rw { position: relative; width: 100%; max-width: 104px; aspect-ratio: 1; }
.mring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.mring .t { fill: none; stroke: rgba(255,255,255,0.1); stroke-width: 9; }
.mring .v { fill: none; stroke: url(#ringGrad); stroke-width: 9; stroke-linecap: round; stroke-dasharray: 264; stroke-dashoffset: 264; animation: ring-fill 7s var(--expo) infinite; }
.mring.r70 .v { --off: 58.7; } .mring.r65 .v { --off: 73.3; } .mring.r60 .v { --off: 88; }
.mring b { position: absolute; inset: 0; display: grid; place-items: center; font: 500 22px/1 var(--font-mono); }
.mring span { font-size: 13px; color: var(--on-dark-muted); line-height: 1.3; }
@keyframes ring-fill { 0% { stroke-dashoffset: 264; } 22%, 86% { stroke-dashoffset: var(--off); } 100% { stroke-dashoffset: 264; } }

.labchart { width: 88%; height: auto; overflow: visible; }
.labchart .ax { stroke: #dcd8ea; stroke-width: 1.5; }
.labchart .ln { fill: none; stroke: var(--violet); stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 420; animation: draw-line 6s var(--out) infinite; }
.labchart .tag rect { fill: var(--acid); }
.labchart .tag text { font: 700 13px var(--font-sans); fill: #0b0a16; }
.labchart .tag { animation: tag-pop 6s var(--spring) infinite; transform-box: fill-box; transform-origin: center; }
.labchart .lbl { font: 600 11px var(--font-sans); fill: var(--muted-2); }
@keyframes draw-line { 0% { stroke-dashoffset: 420; } 40%, 90% { stroke-dashoffset: 0; } 100% { stroke-dashoffset: -420; } }
@keyframes tag-pop { 0%, 38% { opacity: 0; transform: scale(0.6); } 46%, 88% { opacity: 1; transform: scale(1); } 96%, 100% { opacity: 0; transform: scale(0.9); } }

.flipcard { width: 74%; aspect-ratio: 16 / 10; perspective: 900px; }
.flipcard-in { position: relative; width: 100%; height: 100%; transform-style: preserve-3d; animation: flip-loop 8s var(--expo) infinite; }
.flipcard .f { position: absolute; inset: 0; border-radius: 18px; display: grid; place-content: center; text-align: center; gap: 6px; backface-visibility: hidden; -webkit-backface-visibility: hidden; padding: 12px; }
.flipcard .f1 { background: #fff; box-shadow: var(--hl), 0 14px 28px -12px rgba(48,24,180,0.35); }
.flipcard .f1 b { font: 800 26px/1 var(--font-display); letter-spacing: -0.03em; }
.flipcard .f2 { background: var(--grad-violet); color: #fff; transform: rotateY(180deg); box-shadow: 0 14px 28px -12px rgba(72,40,220,0.6); font-size: 14px; line-height: 1.4; }
.flipcard .f small { font: 500 12px/1 var(--font-mono); color: var(--muted-2); }
.flipcard .f2 small { color: var(--acid); }
@keyframes flip-loop { 0%, 40% { transform: rotateY(0); } 50%, 90% { transform: rotateY(180deg); } 100% { transform: rotateY(360deg); } }

.b-lang .bvis { align-content: start; place-items: stretch; padding: 22px; gap: 16px; display: grid; }
.lchips { display: flex; flex-wrap: wrap; gap: 7px; }
.lchip { padding: 7px 12px; border-radius: 999px; font: 600 13px/1 var(--font-sans); background: #fff; color: var(--muted); border: 1px solid var(--line); transition: background-color 300ms, color 300ms, border-color 300ms; }
.lchip.is-on { background: var(--ink); color: #fff; border-color: var(--ink); }
.lcard { background: #fff; border-radius: 18px; padding: 20px; box-shadow: var(--hl), 0 12px 26px -14px rgba(48,24,180,0.3); display: grid; gap: 10px; transition: opacity 350ms var(--out), transform 350ms var(--out); }
.lcard.is-out { opacity: 0; transform: translateY(8px); }
.lcard .said { font-size: 17px; line-height: 1.6; }
.lcard .better { font: 700 19px/1.45 var(--font-display); letter-spacing: -0.015em; }
.lcard .why { font-size: 14px; color: var(--muted); padding-top: 10px; border-top: 1px solid var(--line); }
.lcard .who { font: 600 12px/1 var(--font-sans); color: var(--violet); }

.heat { display: grid; grid-template-columns: repeat(12, 1fr); gap: 5px; width: 100%; padding: 22px 24px 14px; }
.heat i { height: 22px; border-radius: 5px; background: #e5e2f0; }
.heat i.h1 { background: #d6cfff; } .heat i.h2 { background: #a896ff; } .heat i.h3 { background: var(--violet); } .heat i.h4 { background: var(--acid); }
.heat.is-filling i:not(.on) { background: #e5e2f0; }
.heat i.pop { animation: cell-pop 360ms var(--spring) both; }
@keyframes cell-pop { from { transform: scale(0.4); } to { transform: scale(1); } }
.heat-foot { display: flex; justify-content: space-between; width: 100%; padding: 0 24px 18px; font-size: 13px; color: var(--muted); }
.heat-foot b { color: var(--ink); }

.sync { width: 100%; height: 100%; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 10px; padding: 24px; }
.sync svg.path { width: 100%; height: 30px; overflow: visible; }
.sync .dash { fill: none; stroke: var(--violet-2); stroke-width: 3; stroke-linecap: round; stroke-dasharray: 2 10; animation: dash-move 1.4s linear infinite; }
.sync .pulse { fill: var(--acid); stroke: var(--violet); stroke-width: 2; animation: pulse-move 2.8s var(--out) infinite; }
@keyframes dash-move { to { stroke-dashoffset: -24; } }
@keyframes pulse-move { 0% { transform: translateX(0); opacity: 0; } 15% { opacity: 1; } 85% { opacity: 1; } 100% { transform: translateX(100px); opacity: 0; } }
.sync-note { grid-column: 1 / -1; text-align: center; font-size: 13px; color: var(--muted); }
.sync-note b { color: var(--ink); }

/* ---------- honest bands ---------- */
.gauges-panel { margin-top: 56px; padding: 44px; border-radius: 32px; display: grid; gap: 30px; }
.gauges { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.gauge { display: grid; justify-items: center; gap: 14px; text-align: center; }
.gauge .gw { position: relative; width: min(190px, 100%); aspect-ratio: 1; }
.gauge svg { width: 100%; height: 100%; overflow: visible; }
.gauge .gt { fill: none; stroke: rgba(255,255,255,0.09); stroke-width: 12; stroke-linecap: round; }
.gauge .gv { fill: none; stroke: url(#gaugeGrad); stroke-width: 12; stroke-linecap: round; transition: stroke-dashoffset 1.6s var(--expo); }
.gauge .gtarget { fill: none; stroke: rgba(160,255,131,0.8); stroke-width: 2; stroke-dasharray: 4 6; }
.gauge .gtick { stroke: var(--acid); stroke-width: 3.5; stroke-linecap: round; }
.gauge b { position: absolute; inset: 0; display: grid; place-items: center; font: 500 clamp(28px, 3vw, 40px)/1 var(--font-mono); }
.gauge h3 { font: 600 16px/1.35 var(--font-sans); letter-spacing: 0; color: var(--on-dark-muted); max-width: 16ch; }
.gauges-foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; align-items: center; padding-top: 26px; border-top: 1px solid rgba(255,255,255,0.09); }
.gauges-foot p { font-weight: 600; font-size: 18px; }
.legend { display: flex; flex-wrap: wrap; gap: 20px; font-size: 14px; color: var(--on-dark-muted); }
.legend span { display: inline-flex; align-items: center; gap: 8px; }
.legend i { width: 18px; height: 6px; border-radius: 3px; background: linear-gradient(90deg, #7b62ff, #b09fff); }
.legend i.tg { height: 0; border-top: 2px dashed var(--acid); background: none; }

/* ---------- phone ---------- */
.phone-scene { position: relative; display: grid; place-items: center; perspective: 1400px; min-height: 660px; }
.phone-scene::before { content: ""; position: absolute; width: 460px; height: 460px; border-radius: 50%; background: radial-gradient(circle, rgba(123,98,255,0.35), rgba(123,98,255,0) 65%); filter: blur(10px); }
.phone { position: relative; width: 300px; height: 612px; border-radius: 52px; padding: 11px; background: linear-gradient(145deg, #2e2c3a, #0f0e16 60%, #24222f); box-shadow: inset 0 0 0 1.5px rgba(255,255,255,0.12), inset 0 1px 0 rgba(255,255,255,0.25), var(--shadow-lg), 0 70px 120px -40px rgba(48,24,180,0.55); transform: rotateY(-20deg) rotateX(6deg); }
.phone::before { content: ""; position: absolute; right: -3px; top: 150px; width: 4px; height: 70px; border-radius: 0 3px 3px 0; background: #2b2938; }
.phone-screen { position: relative; height: 100%; border-radius: 42px; overflow: hidden; background: var(--ground); padding: 54px 18px 20px; display: grid; grid-template-rows: auto auto 1fr auto; gap: 14px; }
.phone-screen::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(120deg, rgba(255,255,255,0.35), rgba(255,255,255,0) 35%); }
.island { position: absolute; top: 14px; left: 50%; width: 96px; height: 28px; margin-left: -48px; border-radius: 20px; background: #000; }
.ph-top { display: flex; justify-content: space-between; align-items: center; font-weight: 700; font-size: 17px; }
.ph-progress { height: 6px; border-radius: 99px; background: #e2def0; overflow: hidden; }
.ph-progress i { display: block; width: 42%; height: 100%; background: var(--grad-violet); border-radius: 99px; }
.ph-card { display: grid; place-content: center; text-align: center; gap: 8px; border-radius: 26px; background: #fff; box-shadow: var(--hl), 0 16px 30px -14px rgba(48,24,180,0.35); padding: 16px; }
.ph-card b { font: 800 34px/1 var(--font-display); letter-spacing: -0.03em; }
.ph-card span { font-size: 14px; color: var(--muted); }
.ph-grades { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.ph-grades span { display: grid; justify-items: center; gap: 4px; padding: 11px 2px; border-radius: 14px; font: 700 13px/1 var(--font-sans); }
.ph-grades small { font: 500 10px/1 var(--font-mono); opacity: 0.8; }
.float-chip { position: absolute; z-index: 2; display: inline-flex; align-items: center; gap: 10px; padding: 12px 16px 12px 12px; border-radius: 18px; background: rgba(255,255,255,0.84); border: 1px solid rgba(255,255,255,0.9); box-shadow: var(--hl), var(--shadow); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); font-size: 14px; font-weight: 600; white-space: nowrap; }
.float-chip small { display: block; font-weight: 500; font-size: 12px; color: var(--muted); }
.float-chip .tile { width: 36px; height: 36px; border-radius: 11px; }
.float-chip .tile svg.i { width: 18px; height: 18px; }
.fc-a { left: 0; top: 20%; animation: bob 7s ease-in-out infinite; }
.fc-b { right: 0; bottom: 16%; animation: bob 8.5s ease-in-out -2s infinite; }
@keyframes bob { 0%, 100% { transform: translateY(-6px); } 50% { transform: translateY(6px); } }
.store-btns { margin-top: 32px; }

/* ---------- testimonials ---------- */
.tm { margin-top: 56px; display: grid; gap: 4px; }
.tm-row { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); }
.tm-track { display: flex; gap: 20px; width: max-content; padding: 14px 10px 40px; animation: marquee 70s linear infinite; }
.tm-row--rev .tm-track { animation-direction: reverse; animation-duration: 80s; }
.tm-row:hover .tm-track { animation-play-state: paused; }
.tcard { width: 400px; flex: none; padding: 28px; display: grid; gap: 22px; align-content: space-between; margin: 0; }
.tcard blockquote { margin: 0; font-size: 17px; line-height: 1.6; color: #2a2645; }
.tcard figcaption { display: flex; align-items: center; gap: 14px; }
.avatar { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 50%; flex: none; color: #fff; font: 800 17px/1 var(--font-display); box-shadow: inset 0 1px 0 rgba(255,255,255,0.35), 0 6px 14px -6px rgba(48,24,180,0.5); }
.av1 { background: linear-gradient(135deg, #7b62ff, #3f25d6); }
.av2 { background: linear-gradient(135deg, #ed9aff, #8f5bff); }
.av3 { background: linear-gradient(135deg, #a0ff83, #3fbf8f); color: #0b0a16; }
.tcard figcaption b { display: block; font-size: 15.5px; }
.tcard figcaption span { font-size: 14px; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 24px; }
.faq-side { grid-column: 1 / 5; }
.faq-side p { margin-top: 20px; color: var(--muted); }
.faq { grid-column: 5 / 13; display: grid; gap: 12px; }
.faq li { border-radius: 22px; background: #fff; box-shadow: var(--hl), 0 1px 2px rgba(20,10,60,0.05), 0 10px 24px -14px rgba(48,24,180,0.22); border: 1px solid rgba(231,228,241,0.7); transition: box-shadow 300ms var(--out); }
.faq li.is-open { box-shadow: var(--hl), var(--shadow); }
.faq h3 { font-size: inherit; }
.faq button { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 22px 24px; border: 0; background: none; text-align: left; font: 700 18px/1.35 var(--font-display); letter-spacing: -0.015em; color: var(--ink); }
.faq .plus { display: grid; place-items: center; width: 34px; height: 34px; flex: none; border-radius: 50%; background: var(--ground); color: var(--violet); transition: transform 300ms var(--out), background-color 300ms, color 300ms; }
.faq .plus svg.i { width: 18px; height: 18px; }
.faq li.is-open .plus { transform: rotate(45deg); background: var(--violet); color: #fff; }
.faq-a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 360ms var(--out); }
.faq-a > div { overflow: hidden; visibility: hidden; transition: visibility 0s linear 360ms; }
.faq-a p { padding: 0 70px 24px 24px; color: var(--muted); font-size: 17px; }
.faq li.is-open .faq-a { grid-template-rows: 1fr; }
.faq li.is-open .faq-a > div { visibility: visible; transition: none; }
html:not(.js) .faq-a { grid-template-rows: 1fr; }
html:not(.js) .faq-a > div { visibility: visible; }

/* ---------- final CTA ---------- */
.cta-section { padding: 40px 0 var(--section); }
.cta-panel { position: relative; isolation: isolate; overflow: hidden; border-radius: 36px; padding: 80px 72px; display: grid; grid-template-columns: 1.15fr 1fr; gap: 40px; align-items: center;
  background: linear-gradient(135deg, #2a1c80 0%, #1a1150 50%, #140d3a 100%); border: 1px solid rgba(255,255,255,0.12); box-shadow: var(--hl-dark), 0 60px 120px -40px rgba(96,68,255,0.6); }
.cta-panel .glow--violet { width: 600px; height: 600px; right: -10%; top: -40%; opacity: 0.7; }
.cta-panel .glow--acid { left: -6%; bottom: -40%; opacity: 0.28; }
.cta-panel .glow--bubble { left: 46%; top: 40%; width: 320px; height: 320px; opacity: 0.35; }
.cta-panel .h2 { font-size: clamp(36px, 4.4vw, 60px); }
.cta-panel .lede { margin-top: 18px; }
.cta-panel .actions { margin-top: 34px; }
.mini-deck { position: relative; height: 300px; }
.mini-deck .mc { position: absolute; left: 50%; top: 50%; width: 260px; height: 172px; margin: -86px 0 0 -130px; border-radius: 22px; display: grid; align-content: center; justify-items: start; gap: 8px; padding: 24px 26px; transition: transform 1.1s var(--expo); transform-origin: 50% 120%; }
.mini-deck .mc b { font: 800 26px/1 var(--font-display); letter-spacing: -0.03em; }
.mini-deck .mc .mono { font-size: 13px; }
.mc-1 { background: #4a30e0; color: #fff; box-shadow: 0 4px 0 #2f1aa8, var(--shadow-dark); }
.mc-2 { background: var(--violet); color: #fff; box-shadow: 0 4px 0 #3a22c4, var(--shadow-dark); }
.mc-3 { background: #fff; color: var(--ink); box-shadow: 0 4px 0 #d5d0ea, var(--shadow-dark); }
.mc-3 .mono { color: var(--violet); }
.mc-1 .mono, .mc-2 .mono { color: var(--acid); }
.mini-deck .mc-1 { transform: rotate(-14deg) translate(-70px, 10px); }
.mini-deck .mc-2 { transform: rotate(-3deg) translate(-8px, -14px); }
.mini-deck .mc-3 { transform: rotate(9deg) translate(64px, 6px); }
.motion .mini-deck:not(.is-open) .mc { transform: none; }

/* ---------- footer ---------- */
.footer { padding: 110px 0 0; }
.footer-top { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 40px; }
.footer-brand p { margin-top: 18px; max-width: 32ch; color: var(--on-dark-muted); font-size: 16px; }
.footer-brand .mail { display: inline-flex; align-items: center; gap: 8px; margin-top: 22px; padding: 10px 16px; border-radius: 999px; background: var(--glass); border: 1px solid var(--glass-line); font-size: 15px; }
.footer-brand .mail svg.i { width: 16px; height: 16px; color: var(--acid); }
.footer h2 { font: 600 14px/1.2 var(--font-sans); letter-spacing: 0; color: var(--on-dark-faint); margin-bottom: 18px; }
.footer ul { display: grid; gap: 12px; }
.footer ul a { color: rgba(255,255,255,0.86); font-weight: 500; font-size: 16px; }
.footer ul a:hover { color: var(--acid); }
.footer-line { margin-top: 80px; padding: 26px 0; border-top: 1px solid rgba(255,255,255,0.09); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 30px; font-size: 14px; color: var(--on-dark-faint); }
.footer-giant { position: relative; height: clamp(80px, 15vw, 210px); overflow: hidden; pointer-events: none; }
.footer-giant > span { position: absolute; left: 50%; top: 0; transform: translateX(-50%); font: 900 clamp(130px, 26vw, 380px)/0.8 var(--font-display); letter-spacing: -0.05em; white-space: nowrap;
  background: linear-gradient(180deg, rgba(255,255,255,0.11), rgba(255,255,255,0.01)); -webkit-background-clip: text; background-clip: text; color: transparent; display: inline-flex; align-items: flex-end; }
.footer-giant .a { position: relative; display: inline-block; }
.footer-giant .a svg { position: absolute; left: 50%; bottom: 0.6em; width: 0.6em; height: 0.26em; transform: translateX(-50%); overflow: visible; }
.footer-giant .a path { fill: none; stroke: rgba(255,255,255,0.11); stroke-width: 11; stroke-linecap: round; }

/* ---------- inner pages: hero band ---------- */
.band { padding: 176px 0 120px; }
.band h1 { margin-top: 24px; font-size: clamp(42px, 5.4vw, 76px); max-width: 15ch; letter-spacing: -0.035em; }
.band .lede { margin-top: 22px; }
.band .small { margin-top: 16px; }
.band-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 24px; align-items: center; }
.band-grid .band-copy { grid-column: 1 / 7; }
.band-grid .band-vis { grid-column: 7 / 13; }
.band--lift { padding-bottom: 170px; }
.lift { margin-top: -110px; position: relative; z-index: 3; }

/* features */
.feat { padding: 120px 0 40px; }
.feat:last-of-type { padding-bottom: 140px; }
.feat-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 24px; align-items: center; }
.feat-text { grid-column: 1 / 6; }
.feat-vis { grid-column: 6 / 13; position: relative; }
.feat--rev .feat-text { grid-column: 8 / 13; grid-row: 1; }
.feat--rev .feat-vis { grid-column: 1 / 8; grid-row: 1; }
.feat-name { display: flex; align-items: center; gap: 18px; }
.feat-name h2 { font-size: clamp(34px, 3.6vw, 48px); }
.feat-text .promise { margin-top: 18px; font: 700 21px/1.35 var(--font-display); letter-spacing: -0.015em; color: var(--muted); }
.rows { margin-top: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 18px 24px; }
.rows li { display: flex; gap: 12px; align-items: flex-start; }
.rows b { display: block; font-size: 15.5px; font-weight: 600; line-height: 1.35; }
.rows span:not(.ck) { display: block; margin-top: 3px; font-size: 14.5px; line-height: 1.5; color: var(--muted); }
.mock { overflow: hidden; }
.mock-body { padding: 28px; }
.mock-hint { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--muted); margin-bottom: 16px; }
.mock-hint svg.i { width: 15px; height: 15px; color: var(--violet); }
.feat-vis::before { content: ""; position: absolute; inset: 10% 6%; z-index: -1; border-radius: 50%; background: radial-gradient(circle, rgba(123,98,255,0.28), rgba(123,98,255,0) 68%); filter: blur(30px); }

.coach-text { font-size: 18px; line-height: 2.05; padding: 22px 24px; border-radius: 18px; background: var(--ground); }
.coach-text button.miss { border: 0; background: none; padding: 0 1px; font: inherit; color: inherit; cursor: pointer; border-radius: 5px; transition: background-color 200ms; }
.coach-text button.miss:hover { background: var(--bubble-wash); }
.coach-text button.miss[aria-expanded="true"] { background: var(--bubble); text-decoration-color: #0b0a16; }
.coach-note { margin-top: 14px; padding: 20px 22px; border-radius: 18px; background: var(--night); color: #fff; display: grid; gap: 10px; min-height: 140px; align-content: start; box-shadow: var(--shadow-dark); }
.coach-note .better { font: 700 20px/1.35 var(--font-display); letter-spacing: -0.015em; }
.coach-note .why { color: var(--on-dark-muted); font-size: 15.5px; }
.coach-note .pill { justify-self: start; }
.coach-note.is-new { animation: note-in 320ms var(--out) both; }
@keyframes note-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.coach-scores { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 14px; }
.coach-scores div { padding: 12px; border-radius: 14px; background: var(--ground); font-size: 12px; color: var(--muted); line-height: 1.3; }
.coach-scores b { display: block; font: 500 22px/1 var(--font-mono); color: var(--ink); margin-bottom: 6px; }

.seg { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; padding: 5px; border-radius: 999px; background: var(--ground); }
.seg button { min-height: 42px; border: 0; border-radius: 999px; background: transparent; font: 600 14.5px/1 var(--font-sans); color: var(--muted); transition: background-color 250ms, color 250ms, box-shadow 250ms; }
.seg button[aria-selected="true"] { background: #fff; color: var(--ink); box-shadow: var(--hl), 0 4px 12px -6px rgba(48,24,180,0.35); }
.labs-panel { margin-top: 16px; padding: 22px; border-radius: 18px; background: var(--ground); min-height: 270px; }
.labs-panel h3 { font-size: 20px; letter-spacing: -0.02em; line-height: 1.25; }
.labs-panel p { margin-top: 8px; font-size: 15.5px; color: var(--muted); }
.labs-panel .line { margin-top: 18px; font-size: 18px; line-height: 1.7; color: var(--ink); padding: 16px 18px; border-radius: 14px; background: #fff; }
.labs-panel .gap { display: inline-block; min-width: 7ch; border-bottom: 3px solid var(--violet); }
.labs-panel .labchart { margin-top: 10px; }
.labs-panel .labchart .ln { animation: none; stroke-dasharray: none; }
.labs-panel .labchart .tag { animation: none; }
.labs-panel .timer { margin-top: 18px; font-size: 22px; padding: 10px 16px; background: #fff; }
.labs-panel.is-new { animation: note-in 260ms var(--out) both; }

.fc { perspective: 1400px; border-radius: 24px; cursor: pointer; }
.fc-inner { position: relative; display: grid; height: 240px; transform-style: preserve-3d; transition: transform 600ms var(--expo); }
.fc.is-flipped .fc-inner { transform: rotateY(180deg); }
.fc-face { grid-area: 1 / 1; display: grid; place-content: center; justify-items: center; gap: 10px; padding: 24px; text-align: center; border-radius: 24px; backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.fc-front { background: var(--ground); box-shadow: inset 0 0 0 1px var(--line); }
.fc-back { background: var(--grad-violet); color: #fff; transform: rotateY(180deg); box-shadow: 0 18px 36px -16px rgba(72,40,220,0.7); }
.fc-word { font: 800 clamp(32px, 3.6vw, 46px)/1.05 var(--font-display); letter-spacing: -0.03em; }
.fc-sent { font: 600 19px/1.45 var(--font-sans); max-width: 26ch; }
.fc-hint { font-size: 13.5px; color: var(--muted-2); }
.fc-back .fc-hint { color: rgba(255,255,255,0.78); }
.grades { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 14px; }
.grade { display: grid; justify-items: center; gap: 5px; min-height: 62px; padding: 12px 6px; border: 0; border-radius: 16px; font: 700 15px/1 var(--font-sans); box-shadow: inset 0 1px 0 rgba(255,255,255,0.35); transition: transform 200ms var(--out), filter 200ms; }
.grade:hover { transform: translateY(-2px); filter: brightness(1.04); }
.grade:active { transform: scale(0.96); }
.grade span { font: 500 11.5px/1 var(--font-mono); opacity: 0.8; }
.review { position: relative; }
.review .fc { transition: transform 300ms var(--out), opacity 300ms var(--out); }
.review.is-graded .fc { transform: translateX(-60px) rotate(-6deg); opacity: 0; pointer-events: none; }
.review-result { position: absolute; inset: 0 0 auto 0; height: 240px; display: none; place-content: center; justify-items: center; gap: 10px; text-align: center; }
.review.is-graded .review-result { display: grid; }
.review-result .interval { font: 500 clamp(44px, 5vw, 64px)/1 var(--font-mono); color: var(--violet); animation: pop 420ms var(--spring) both; }
.review-result p { font-size: 15px; color: var(--muted); max-width: 30ch; }
.review.is-graded .grades { visibility: hidden; }
@keyframes pop { 0% { transform: scale(0.85); opacity: 0; } 60% { transform: scale(1.04); opacity: 1; } 100% { transform: scale(1); } }

.loop-mock { display: grid; grid-template-columns: 1fr 210px; gap: 22px; align-items: center; }
.loop-correction { padding: 22px; border-radius: 18px; background: var(--ground); display: grid; gap: 12px; }
.loop-correction .said { font-size: 18px; line-height: 1.8; }
.loop-correction .why { font-size: 14.5px; color: var(--muted); }
.loop-correction .actions { gap: 8px; }
.loop-correction.is-sent .loop-add { display: none; }
.loop-pile { position: relative; height: 230px; }
.loop-pile .pc { position: absolute; left: 6px; right: 6px; top: 34px; height: 140px; border-radius: 20px; background: var(--violet); color: #fff; display: grid; place-content: center; text-align: center; gap: 6px; padding: 12px; box-shadow: 0 4px 0 #3a22c4, 0 20px 30px -16px rgba(48,24,180,0.7); }
.loop-pile .pc:nth-child(1) { transform: rotate(9deg); background: #4a30e0; }
.loop-pile .pc:nth-child(2) { transform: rotate(3deg); }
.loop-pile .pc-new { background: #0b0816; transform: rotate(-3deg) translateY(-6px); box-shadow: 0 4px 0 #000, 0 24px 40px -14px rgba(10,4,50,0.7); }
.loop-pile .pc-new.is-flying { animation: fly-in 640ms var(--expo) both; }
.loop-pile .pc b { font: 800 22px/1.1 var(--font-display); letter-spacing: -0.025em; }
.loop-pile .pc .mono { font-size: 12.5px; color: var(--acid); }
.loop-count { position: absolute; bottom: 0; left: 0; right: 0; text-align: center; font-size: 14px; color: var(--muted); }
.loop-count b { color: var(--ink); }
@keyframes fly-in { from { transform: translate(-260px, 30px) rotate(-30deg) scale(0.7); opacity: 0.3; } to { transform: rotate(-3deg) translateY(-6px); opacity: 1; } }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-btn { min-height: 40px; padding: 0 16px; border: 1px solid var(--line); border-radius: 999px; background: #fff; color: var(--muted); font: 600 14px/1 var(--font-sans); transition: background-color 200ms, color 200ms, border-color 200ms; }
.chip-btn:hover { color: var(--ink); }
.chip-btn[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
.progress-chart { margin-top: 16px; padding: 20px; border-radius: 18px; background: var(--ground); }
.progress-chart svg { width: 100%; height: auto; overflow: visible; }
.progress-chart .grid { stroke: #e2def0; stroke-width: 1; }
.progress-chart .area { fill: rgba(123, 98, 255, 0.12); }
.progress-chart .ln { fill: none; stroke: var(--violet); stroke-width: 3.5; stroke-linecap: round; stroke-linejoin: round; transition: d 500ms var(--out); }
.progress-chart .dot { fill: #fff; stroke: var(--violet); stroke-width: 3; transition: cy 500ms var(--out); }
.progress-chart .target { stroke: var(--ink); stroke-width: 1.5; stroke-dasharray: 5 6; }
.progress-chart text { font: 500 12px var(--font-mono); fill: var(--muted-2); }
.progress-chart .now { font-size: 15px; fill: var(--ink); }
.progress-read { margin-top: 12px; font-weight: 600; font-size: 15.5px; }
.lang-mock .lcard { margin-top: 16px; box-shadow: none; background: var(--ground); }

/* IELTS */
.rowsect { padding: 70px 0; }
.rowsect--first { padding-top: 130px; }
.rowsect h2 { font-size: clamp(32px, 3.4vw, 46px); }
.rowsect .split-text p { margin-top: 18px; font-size: 18.5px; color: var(--muted); max-width: 42ch; }
.rowsect .split-text .tile { margin-bottom: 22px; }
.vis-card { padding: 30px; }
.vis-card h3 { font-size: 18px; letter-spacing: -0.015em; line-height: 1.3; }
.frames { display: grid; gap: 10px; margin-top: 16px; }
.frames li { display: grid; grid-template-columns: 110px 1fr; gap: 14px; align-items: center; padding: 14px 16px; border-radius: 14px; background: var(--ground); }
.frames li .pill { justify-self: start; }
.frames li > span:last-child { font-weight: 600; font-size: 17px; }
.wave { display: flex; align-items: center; gap: 4px; height: 70px; margin: 18px 0; }
.wave i { flex: 1; border-radius: 3px; background: linear-gradient(180deg, #8f7bff, #6044ff); }
.wave i:nth-child(6n+1) { height: 34%; } .wave i:nth-child(6n+2) { height: 72%; } .wave i:nth-child(6n+3) { height: 52%; }
.wave i:nth-child(6n+4) { height: 96%; } .wave i:nth-child(6n+5) { height: 44%; } .wave i:nth-child(6n) { height: 64%; } .wave i:nth-child(7n) { height: 22%; }
.wave i:nth-child(n+28) { background: #dcd7ef; }
.rec-head { display: flex; align-items: center; gap: 14px; }
.score-row { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px; border-radius: 14px; background: var(--ground); font-weight: 600; }
.score-row .mono { font-size: 26px; }
.rec-note { margin-top: 12px; padding: 14px 16px; border-radius: 14px; background: var(--bubble-wash); font-size: 15px; }
.weight { display: grid; gap: 10px; }
.weight-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 16px 18px; border-radius: 14px; background: var(--ground); font-weight: 600; }
.weight-row .mono { font-size: 24px; }
.weight-row .x { font: 500 13px/1 var(--font-mono); color: var(--violet); padding: 5px 8px; border-radius: 8px; background: var(--violet-wash); margin-left: 8px; }
.weight-row.total { background: var(--night); color: #fff; }
.weight-row.total .mono { font-size: 36px; color: var(--acid); }
.ba { margin-top: 48px; padding: 10px; }
.ba-head, .ba-row { display: grid; grid-template-columns: 1fr 1fr 1.2fr; gap: 20px; align-items: center; padding: 18px 24px; }
.ba-head { font: 600 13.5px/1 var(--font-sans); color: var(--muted); }
.ba-row { border-top: 1px solid var(--line); }
.ba-row .before { font: 700 clamp(18px, 1.8vw, 22px)/1.3 var(--font-display); letter-spacing: -0.015em; color: var(--muted-2); text-decoration: line-through; text-decoration-color: var(--bubble); text-decoration-thickness: 3px; }
.ba-row .after { font: 700 clamp(18px, 1.8vw, 22px)/1.3 var(--font-display); letter-spacing: -0.015em; }
.ba-row .after .fix { padding: 2px 8px; }
.ba-row .note { font-size: 15px; color: var(--muted); }
.quote-panel { padding: 56px; display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: start; margin: 0; }
.quote-panel blockquote { margin: 0; font: 700 clamp(22px, 2.4vw, 32px)/1.35 var(--font-display); letter-spacing: -0.02em; }
.quote-panel figcaption { margin-top: 22px; display: flex; gap: 12px; align-items: center; color: var(--on-dark-muted); font-size: 15px; }
.quote-panel figcaption b { color: #fff; display: block; }
.qmark { font: 900 120px/0.7 var(--font-display); color: var(--acid); }

/* about */
.team { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; margin-top: 56px; }
.person { padding: 20px; display: grid; align-content: start; gap: 6px; transition: transform 300ms var(--out), box-shadow 300ms var(--out); }
.person:hover { transform: translateY(-4px); box-shadow: var(--hl), var(--shadow-lg); }
.portrait { position: relative; aspect-ratio: 1 / 1.05; border-radius: 20px; background: var(--ground); margin-bottom: 16px; overflow: hidden; }
.portrait::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 50% 30%, rgba(123,98,255,0.18), transparent 70%); }
.portrait i, .portrait b { position: absolute; width: 56%; aspect-ratio: 1; border-radius: 26%; }
.portrait i { left: 30%; top: 14%; transform: rotate(9deg); box-shadow: 0 16px 30px -14px rgba(48,24,180,0.6); }
.portrait b { left: 15%; top: 30%; display: grid; place-items: center; font: 900 clamp(40px, 4vw, 58px)/1 var(--font-display); box-shadow: inset 0 1px 0 rgba(255,255,255,0.25), 0 20px 36px -14px rgba(10,4,50,0.6); }
.pv-violet { background: linear-gradient(150deg, #8f7bff, #6044ff); }
.pv-acid { background: linear-gradient(150deg, #c4ffb0, #a0ff83); }
.pv-bubble { background: linear-gradient(150deg, #f6c3ff, #ed9aff); }
.pv-black { background: linear-gradient(150deg, #2a2838, #000); color: #fff; }
.pv-violet-f { background: linear-gradient(150deg, #8f7bff, #6044ff); color: #fff; }
.pv-white-f { background: #fff; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--line), 0 20px 36px -14px rgba(10,4,50,0.4) !important; }
.person h3 { font-size: 24px; }
.person .role { font-weight: 600; font-size: 14.5px; color: var(--violet); }
.person p.q { margin-top: 8px; font-size: 15px; line-height: 1.55; color: var(--muted); }
.person a { margin-top: 10px; font-size: 14px; word-break: break-all; }
.timeline { margin-top: 56px; display: grid; grid-template-columns: 1fr 1fr; position: relative; padding: 34px 40px; }
.timeline::before { content: ""; position: absolute; left: 48px; right: 40px; top: 50px; height: 2px; background: linear-gradient(90deg, var(--violet), var(--acid)); }
.tl-item { position: relative; padding-top: 34px; }
.tl-item::before { content: ""; position: absolute; left: 0; top: 8px; width: 16px; height: 16px; border-radius: 50%; background: #fff; border: 3px solid var(--violet); }
.tl-item:last-child::before { border-color: var(--acid); background: var(--acid); }
.tl-item .mono { font-size: 14px; color: var(--violet); }
.tl-item p { margin-top: 6px; font: 700 21px/1.3 var(--font-display); letter-spacing: -0.015em; }
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; }
.value { padding: 30px; }
.value .tile { margin-bottom: 22px; }
.value h3 { font-size: 24px; line-height: 1.2; }

/* forms */
.form-split { display: grid; grid-template-columns: 1fr 1.1fr; gap: 24px; align-items: stretch; }
.form-vis { padding: 36px; display: grid; align-content: center; gap: 14px; border-radius: 32px; position: relative; overflow: hidden; isolation: isolate; }
.form-vis .feedback { box-shadow: var(--hl-dark), var(--shadow-dark); }
.form-vis > p.small { margin-top: 6px; }
.glassrow { display: flex; gap: 16px; align-items: flex-start; padding: 20px; border-radius: 20px; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); box-shadow: var(--hl-dark); }
.glassrow h2 { font-size: 19px; letter-spacing: -0.015em; line-height: 1.3; }
.glassrow p { margin-top: 4px; font-size: 15px; color: var(--on-dark-muted); }
.form-card { perspective: 1600px; cursor: auto; }
.form-card .fc-inner { height: auto; }
.form-card:not(.is-3d) { perspective: none; }
.form-card:not(.is-3d) .fc-inner { transform-style: flat; }
.form-card:not(.is-3d) .fc-back { visibility: hidden; }
.form-card .fc-front { display: block; text-align: left; padding: 40px; background: #fff; border-radius: 32px; box-shadow: var(--hl), var(--shadow-lg); border: 1px solid rgba(231,228,241,0.7); }
.form-card .fc-back { border-radius: 32px; padding: 48px; justify-items: start; text-align: left; align-content: center; place-content: center start; }
.form-card .fc-back .h3 { color: #fff; font-size: 30px; max-width: 16ch; }
.form-card h2 { font-size: 26px; letter-spacing: -0.02em; }
.form-card .sub { margin: 6px 0 26px; font-size: 15.5px; color: var(--muted); }
.field { display: grid; gap: 8px; margin-bottom: 18px; }
.field label { font-weight: 600; font-size: 15px; }
.field .opt { font-weight: 400; color: var(--muted-2); }
.field input, .field select, .field textarea {
  width: 100%; min-height: 54px; padding: 0 18px; border: 1.5px solid var(--line); border-radius: 14px; background: #fbfaff; color: var(--ink); font-size: 16.5px;
  transition: border-color 200ms, box-shadow 200ms, background-color 200ms;
}
.field textarea { padding: 14px 18px; min-height: 140px; resize: vertical; line-height: 1.5; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--violet-2); background: #fff; box-shadow: 0 0 0 4px rgba(123,98,255,0.18); }
.field input[aria-invalid="true"], .field textarea[aria-invalid="true"] { border-color: var(--bubble); box-shadow: 0 0 0 4px rgba(237,154,255,0.22); }
.field select { appearance: none; -webkit-appearance: none; padding-right: 48px; }
.select { position: relative; }
.select svg.i { position: absolute; right: 18px; top: 50%; width: 18px; height: 18px; transform: translateY(-50%); pointer-events: none; color: var(--muted); }
.field .err { display: none; font-size: 14.5px; font-weight: 600; color: var(--ink); padding: 8px 12px; border-radius: 10px; background: var(--bubble-wash); }
.field .err.is-on { display: block; animation: nudge 300ms var(--out); }
@keyframes nudge { 0%, 100% { transform: translateX(0); } 25% { transform: translateX(-5px); } 75% { transform: translateX(5px); } }
.form-card .btn { width: 100%; margin-top: 8px; }
.form-card .fc-back .btn { width: auto; }
.form-note { margin-top: 16px; font-size: 14px; color: var(--muted); }

/* legal */
.legal { display: grid; grid-template-columns: 240px minmax(0, 700px); gap: 64px; padding: 80px 0 140px; }
.legal-toc { position: sticky; top: 110px; align-self: start; padding: 22px; }
.legal-toc h2 { font: 600 13.5px/1.2 var(--font-sans); letter-spacing: 0; color: var(--muted); margin-bottom: 12px; }
.legal-toc ol { display: grid; gap: 2px; }
.legal-toc a { display: block; padding: 7px 10px; border-radius: 10px; color: var(--muted); font-weight: 500; font-size: 14.5px; }
.legal-toc a:hover { background: var(--ground); color: var(--ink); }
.legal-doc .draft { padding: 16px 20px; border-radius: 16px; background: #fff; border: 1px solid var(--line); font-size: 15px; color: var(--muted); }
.legal-doc section { margin-top: 44px; scroll-margin-top: 110px; }
.legal-doc h2 { font-size: 26px; letter-spacing: -0.02em; line-height: 1.2; }
.legal-doc p { margin-top: 12px; font-size: 18px; line-height: 1.75; color: #2f2b48; }

/* 404 */
.nf { padding: 180px 0 140px; text-align: center; }
.nf h1 { margin-top: 22px; font-size: clamp(34px, 4vw, 52px); }
.nf .fc { width: min(480px, 100%); margin: 40px auto 0; }
.nf .fc-inner { height: 300px; }
.nf .fc-front { background: #fff; box-shadow: var(--hl), var(--shadow-dark); }
.nf .fc-front .fc-word { font-size: clamp(90px, 13vw, 140px); background: var(--grad-violet); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nf .fc-back .fc-sent { font-size: 22px; max-width: 18ch; }
.nf .actions { justify-content: center; margin-top: 40px; }

/* reveal: hidden only while JS motion is running (html.motion, set by boot.js) */
.motion [data-reveal] { opacity: 0; transform: translateY(24px); }
.motion .hero [data-intro] { opacity: 0; }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .nav-links a { padding: 10px 10px; }
  .hero-visual { margin-right: calc(-1 * var(--gutter)); }
  .team { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 960px) {
  :root { --gutter: 20px; --section: 88px; --nav-top: 12px; }
  body { font-size: 17px; }
  .nav-links { display: none; }
  .nav .btn--acid { margin-left: auto; }
  .menu-btn { display: grid; }
  .nav.is-open .menu { display: block; animation: menu-in 240ms var(--out) both; }
  .nav-pill { height: 58px; padding: 0 7px 0 16px; }
  .nav.is-solid .nav-pill { height: 54px; }
  .hero { padding: 116px 0 24px; min-height: 0; }
  .hero-grid, .split, .how-grid, .faq-grid, .feat-grid, .band-grid { grid-template-columns: minmax(0, 1fr); }
  .hero-copy, .hero-visual, .split-text, .split-visual, .split--rev .split-text, .split--rev .split-visual, .faq-side, .faq,
  .feat-text, .feat-vis, .feat--rev .feat-text, .feat--rev .feat-vis, .band-grid .band-copy, .band-grid .band-vis { grid-column: 1; grid-row: auto; }
  .hero-visual { margin: 30px 0 0; }
  .replay { left: 0; bottom: -14px; }
  .split-visual, .feat-vis, .band-grid .band-vis { margin-top: 44px; }
  .clockface { right: -8px; top: -46px; width: 110px; height: 110px; }
  .clockface svg { width: 86px; height: 86px; }
  .clockface b { font-size: 18px; }
  .clockface small { top: 68px; font-size: 10px; }
  .clockpage { padding: 26px 22px; }
  .clockpage .chrome { margin: -26px -22px 20px; padding: 16px 20px; }
  .clockpage .essay-text { font-size: 16.5px; }
  .how-grid { display: none; }
  .how-stack { display: grid; gap: 48px; margin-top: 44px; }
  .how-block h3 { margin-top: 8px; font-size: 26px; }
  .how-block > p { margin-top: 8px; color: var(--on-dark-muted); }
  .how-block .laptop { margin-top: 22px; }
  .how-block .lid { padding: 8px; border-radius: 22px; }
  .how-block .base { display: none; }
  .how-block .screen { aspect-ratio: auto; border-radius: 15px; }
  .how-block .scr { position: relative; font-size: 13px; }
  .how-block .app { grid-template-columns: minmax(0, 1fr); }
  .how-block .app-side { display: none; }
  .how-block .app-main { padding: 16px; }
  .replay { position: relative; left: auto; bottom: auto; margin: 14px auto 0; display: flex; }
  .hero-visual { display: grid; }
  .lid { padding: 8px 8px 11px; border-radius: 16px 16px 10px 10px; }
  .screen { border-radius: 8px; }
  .base { height: 11px; }
  .bento { grid-template-columns: minmax(0, 1fr); grid-template-areas: "coach" "lang" "labs" "words" "progress" "offline"; }
  .btile { padding: 22px; }
  .rings { grid-template-columns: repeat(2, 1fr); padding: 20px; }
  .gauges-panel { padding: 26px 18px; }
  .gauges { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px 14px; }
  .phone-scene { min-height: 640px; margin-top: 30px; align-content: center; }
  .phone { width: 260px; height: 530px; border-radius: 46px; }
  .phone-screen { border-radius: 36px; padding: 48px 14px 16px; }
  .fc-a { left: 0; top: 0; }
  .fc-b { right: 0; bottom: 0; }
  .tcard { width: 300px; padding: 22px; }
  .faq { margin-top: 34px; }
  .faq-a p { padding-right: 24px; }
  .cta-panel { grid-template-columns: minmax(0, 1fr); padding: 52px 24px 30px; border-radius: 28px; }
  .mini-deck { height: 250px; }
  .mini-deck .mc { width: 200px; height: 134px; margin: -67px 0 0 -100px; padding: 18px; }
  .mini-deck .mc b { font-size: 21px; }
  .mini-deck .mc-1 { transform: rotate(-14deg) translate(-50px, 10px); }
  .mini-deck .mc-3 { transform: rotate(9deg) translate(46px, 6px); }
  .footer { padding-top: 80px; }
  .footer-top { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px 20px; }
  .footer-brand { grid-column: 1 / -1; }
  .band { padding: 128px 0 80px; }
  .band--lift { padding-bottom: 130px; }
  .lift { margin-top: -80px; }
  .feat { padding: 72px 0 0; }
  .feat:last-of-type { padding-bottom: 88px; }
  .rows { grid-template-columns: minmax(0, 1fr); }
  .mock-body { padding: 18px; }
  .coach-text { padding: 16px; font-size: 16.5px; }
  .coach-scores { grid-template-columns: repeat(2, 1fr); }
  .loop-mock { grid-template-columns: minmax(0, 1fr); }
  .loop-pile { width: 220px; justify-self: center; }
  .seg button { font-size: 13px; }
  .rowsect { padding: 44px 0; }
  .rowsect--first { padding-top: 88px; }
  .vis-card { padding: 20px; }
  .frames li { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .ba-head { display: none; }
  .ba-row { grid-template-columns: minmax(0, 1fr); gap: 8px; padding: 18px 16px; }
  .quote-panel { grid-template-columns: minmax(0, 1fr); padding: 32px 24px; gap: 8px; }
  .qmark { font-size: 80px; }
  .team { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; gap: 14px; margin: 40px calc(-1 * var(--gutter)) 0; padding: 10px var(--gutter) 30px; scrollbar-width: none; }
  .team::-webkit-scrollbar { display: none; }
  .person { flex: 0 0 76%; scroll-snap-align: center; }
  .timeline { grid-template-columns: minmax(0, 1fr); gap: 22px; padding: 26px 24px; }
  .timeline::before { left: 31px; right: auto; top: 40px; bottom: 40px; width: 2px; height: auto; background: linear-gradient(180deg, var(--violet), var(--acid)); }
  .tl-item { padding: 0 0 0 34px; }
  .tl-item::before { top: 4px; }
  .values { grid-template-columns: minmax(0, 1fr); }
  .form-split { grid-template-columns: minmax(0, 1fr); }
  .form-split .form-vis { order: 2; padding: 22px; }
  .form-card .fc-front { padding: 26px 20px; }
  .legal { grid-template-columns: minmax(0, 1fr); gap: 28px; padding-top: 50px; }
  .legal-toc { position: static; }
  .nf { padding: 130px 0 90px; }
}
@media (max-width: 420px) {
  .nav .btn--acid { padding: 0 13px; font-size: 13px; min-height: 40px; }
  .nav-pill { gap: 6px; }
  .grade { font-size: 13.5px; }
  .grades { gap: 6px; }
  .strip-row { flex-direction: column; align-items: flex-start; gap: 14px; }
  .marquee { width: 100%; }
  .hero-copy .actions .btn { flex: 1 1 100%; }
  .gauge h3 { font-size: 14px; }
}
@media (max-width: 360px) { .nav .wordmark { display: none; } }
@keyframes menu-in { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

/* touch: testimonials become a draggable scroller instead of a marquee */
@media (hover: none) and (pointer: coarse) {
  .tm-row { overflow-x: auto; scroll-snap-type: x proximity; scrollbar-width: none; -webkit-mask-image: none; mask-image: none; }
  .tm-row::-webkit-scrollbar { display: none; }
  .tm-track { animation: none; padding-left: var(--gutter); padding-right: var(--gutter); }
  .tm-track [aria-hidden="true"] { display: none; }
  .tcard { scroll-snap-align: center; }
}

/* reduced motion: final states, nothing moves */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: 1ms !important; transition-delay: 0ms !important; }
  html { scroll-behavior: auto !important; }
  .marquee-track, .tm-track { flex-wrap: wrap; width: auto; justify-content: center; }
  .marquee, .tm-row { -webkit-mask-image: none; mask-image: none; }
  .tm-track [aria-hidden="true"], .marquee-track [aria-hidden="true"] { display: none; }
  .tm-track { gap: 16px; }
  .mring .v { stroke-dashoffset: var(--off); }
  .labchart .ln { stroke-dashoffset: 0; }
  .labchart .tag { opacity: 1; }
  .phone { transform: none; }
}

/* small page-specific pieces */
.band .actions { margin-top: 32px; }
.rec-note--acid { background: #effde9; }
.pad-bottom { height: 120px; }
.band-feedback .feedback { max-width: 460px; margin-left: auto; transform: perspective(1400px) rotateY(-10deg) rotateX(4deg); }
.band-feedback { position: relative; }
.band-feedback::before { content: ""; position: absolute; inset: -10% -6%; z-index: -1; border-radius: 50%; background: radial-gradient(circle, rgba(123,98,255,0.45), transparent 65%); filter: blur(30px); }
.form-vis .feedback { width: 100%; }
@media (max-width: 960px) {
  .pad-bottom { height: 72px; }
  .band-feedback .feedback { margin: 0 auto; transform: none; }
}
@media (prefers-reduced-motion: reduce) { .band-feedback .feedback { transform: none; } }
.form-card h2, .form-card .sub { text-align: left; width: 100%; }