/* QLA Voice website.
   Colour: warm and cool neutrals (never flat white), navy for authority, teal as a restrained accent,
   one muted amber reserved for "eyes off the paper".
   Type: Instrument Sans (SIL OFL 1.1, self-hosted; variable weight 400–700, width 75–100%).
   Shape: radii 4 / 8 / 12 (media 12). Shadows only on the film, the product shot and the plan. */
@font-face {
  font-family: "Instrument Sans";
  src: url("../fonts/instrument-sans-latin-wdth-normal.woff2") format("woff2");
  font-weight: 400 700;
  font-stretch: 75% 100%;
  font-style: normal;
  font-display: swap;
}

:root {
  --canvas: #F3F5F3;          /* page base: soft, faintly warm-green neutral */
  --mist: #E9F1EF;            /* pale teal atmosphere */
  --stone: #F4F1EA;           /* warm neutral */
  --paper: #FFFFFF;
  --line: #D8DFE0;
  --line-soft: #E5EAEA;
  --line-strong: #BFCACE;
  --ink: #0C1E2F;
  --text: #33465A;            /* 9.5:1 on white */
  --muted: #576776;           /* 5.7:1 on white */
  --navy: #08243F;
  --navy-900: #051A2E;
  --navy-800: #0B2B48;
  --teal: #139D94;            /* accent only: rules, focus, progress */
  --teal-700: #0B6F69;        /* actions/links on light: 5.9:1 with white */
  --teal-800: #085A55;
  --teal-50: #E3F1EE;
  --teal-on-navy: #7FDDD4;
  --on-navy: #E3EBF1;
  --on-navy-muted: #A9BBCA;
  --amber: #9E5E0E;           /* "eyes off the paper" only; 5.3:1 with white */
  --amber-ink: #7A4706;
  --amber-50: #FBF0DF;
  --bad: #A3302A;

  --font: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --wrap: 1200px;
  --gutter: clamp(20px, 4.2vw, 56px);
  --section: clamp(80px, 9.5vw, 136px);
  --r-xs: 4px; --r-sm: 8px; --r: 12px;
  --shadow-media: 0 1px 1px rgba(8, 36, 63, .05), 0 28px 60px -30px rgba(8, 36, 63, .45);
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body { margin: 0; background: var(--canvas); color: var(--text); font: 400 1.125rem/1.6 var(--font); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img, svg, video { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { color: var(--ink); margin: 0; text-wrap: balance; }
h1 { font-size: clamp(2.4rem, 1.25rem + 3.7vw, 4.45rem); line-height: .98; font-weight: 640; letter-spacing: -0.04em; font-stretch: 92%; }
h2 { font-size: clamp(2rem, 1.35rem + 1.9vw, 3.1rem); line-height: 1.04; font-weight: 620; letter-spacing: -0.032em; font-stretch: 94%; }
h3 { font-size: 1.1875rem; line-height: 1.3; font-weight: 600; letter-spacing: -0.012em; }
p { margin: 0 0 1em; }
.nb { white-space: nowrap; }
b, strong { font-weight: 600; color: var(--ink); }
a { color: var(--teal-700); text-underline-offset: .22em; text-decoration-thickness: 1px; }
a:hover { color: var(--teal-800); text-decoration-thickness: 2px; }
:focus-visible { outline: 2.5px solid var(--teal); outline-offset: 3px; border-radius: var(--r-xs); }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.muted { color: var(--muted); }
.small { font-size: 1rem; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--navy); color: #fff; padding: 10px 16px; border-radius: var(--r-sm); }
.skip:focus { top: 12px; color: #fff; }
.label { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; font-size: .78rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--teal-700); }
.label::before { content: ""; width: 20px; height: 1.5px; background: currentColor; }
.label.light { color: var(--teal-on-navy); }

/* ---------- buttons: primary (buy), secondary (demo), tertiary (links) ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 50px; padding: 0 22px; border-radius: var(--r-sm); border: 1px solid transparent;
  font: 600 1.0313rem/1 var(--font); letter-spacing: -0.005em; text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background-color .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease), transform .18s var(--ease);
}
.btn .i { width: 14px; height: 14px; }
.btn-primary { background: var(--teal-700); color: #fff; }
.btn-primary:hover { background: var(--teal-800); color: #fff; text-decoration: none; }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-secondary:hover { border-color: var(--ink); color: var(--ink); text-decoration: none; }
.btn-light { background: #fff; color: var(--navy); }
.btn-light:hover { background: var(--teal-50); color: var(--navy); text-decoration: none; }
.btn-ghost-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .35); }
.btn-ghost-light:hover { border-color: #fff; color: #fff; text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: .5; cursor: not-allowed; transform: none; }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: .9688rem; }
.btn-lg { min-height: 54px; font-size: 1.0938rem; }

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 40; background: rgba(243, 245, 243, .88); backdrop-filter: saturate(1.3) blur(12px); border-bottom: 1px solid transparent; transition: border-color .25s; }
.site-header.scrolled { border-bottom-color: var(--line); }
.header-row { display: flex; align-items: center; gap: 20px; min-height: 70px; }
.brand { display: inline-flex; flex: none; line-height: 0; }
.brand img { width: 156px; aspect-ratio: 822 / 166; }
.nav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.nav a:not(.btn) { color: var(--ink); text-decoration: none; font-weight: 500; font-size: .9688rem; padding: 10px 14px; border-radius: var(--r-xs); }
.nav a:not(.btn):hover { color: var(--teal-700); }
.nav .btn { margin-left: 14px; }
.menu-toggle { display: none; }
@media (max-width: 880px) {
  .header-row { min-height: 62px; }
  .brand img { width: 138px; }
  .js .menu-toggle { display: inline-flex; align-items: center; gap: 10px; margin-left: auto; min-height: 44px; padding: 0 14px; font: 600 1rem var(--font); color: var(--navy); background: var(--paper); border: 1px solid var(--line-strong); border-radius: var(--r-sm); cursor: pointer; }
  .menu-icon, .menu-icon::before, .menu-icon::after { display: block; width: 18px; height: 2px; background: currentColor; border-radius: 2px; position: relative; transition: transform .2s, background-color .2s; }
  .menu-icon::before, .menu-icon::after { content: ""; position: absolute; left: 0; }
  .menu-icon::before { top: -6px; } .menu-icon::after { top: 6px; }
  .menu-toggle[aria-expanded="true"] .menu-icon { background: transparent; }
  .menu-toggle[aria-expanded="true"] .menu-icon::before { transform: translateY(6px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-icon::after { transform: translateY(-6px) rotate(-45deg); }
  .header-row { flex-wrap: wrap; }
  .nav { flex-wrap: wrap; margin-left: 0; }
  .js .header-row { flex-wrap: nowrap; }
  .js .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; padding: 6px var(--gutter) 20px; background: var(--paper); border-bottom: 1px solid var(--line); }
  .js .nav.open { display: flex; }
  .js .nav a:not(.btn) { padding: 15px 2px; font-size: 1.125rem; border-bottom: 1px solid var(--line-soft); border-radius: 0; }
  .js .nav .btn { margin: 18px 0 0; min-height: 50px; }
}

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; padding: clamp(40px, 5.4vw, 84px) 0 clamp(64px, 8vw, 116px);
  background: radial-gradient(70% 60% at 100% 30%, rgba(19, 157, 148, .12), transparent 70%), linear-gradient(180deg, var(--canvas) 0%, var(--mist) 100%); }
.hero::before { /* the product's own material: a faint marksheet grid, fading out behind the film */
  content: ""; position: absolute; left: 35%; right: 0; top: 30%; bottom: 0; pointer-events: none;
  background-image: linear-gradient(rgba(8, 36, 63, .05) 1px, transparent 1px), linear-gradient(90deg, rgba(8, 36, 63, .05) 1px, transparent 1px);
  background-size: 96px 32px;
  -webkit-mask-image: radial-gradient(60% 60% at 60% 50%, #000 15%, transparent 75%); mask-image: radial-gradient(60% 60% at 60% 50%, #000 15%, transparent 75%);
}
.hero > .wrap { position: relative; }
.kicker { margin: 0 0 20px; font-size: 1.0625rem; font-weight: 500; color: var(--teal-700); }
.hero h1 span { display: block; }
.hero h1 span + span { color: var(--teal-700); }
.hero-body { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(28px, 4vw, 60px); align-items: start; margin-top: clamp(36px, 4.4vw, 60px); }
.hero-side { padding-top: 4px; }
.lead { font-size: clamp(1.125rem, 1.04rem + .3vw, 1.25rem); line-height: 1.5; color: var(--text); margin: 0; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 26px; }
.school-link { margin: 18px 0 0; font-size: .9688rem; color: var(--muted); }
@media (min-width: 1100px) { /* the film runs off the right edge of the page: asymmetric, and as large as the layout allows */
  .hero-body { grid-template-columns: minmax(0, 4.3fr) minmax(0, 8fr); }
  .hero-body .film { margin-right: calc((100vw - min(100vw, var(--wrap))) / -2 - var(--gutter)); }
  .hero-body .video-frame { border-radius: var(--r) 0 0 var(--r); }
  .hero-body .film-note { padding-right: var(--gutter); }
}

/* the film */
.film { margin: 0; }
.video-frame { position: relative; aspect-ratio: 16 / 9; border-radius: var(--r); overflow: hidden; background: var(--navy); box-shadow: var(--shadow-media); }
.video-frame video { width: 100%; height: 100%; object-fit: cover; }
.video-frame video::cue { font-family: var(--font); font-size: 1.05em; background: rgba(5, 26, 46, .82); }
.film-chip { position: absolute; left: 14px; top: 14px; margin: 0; padding: 6px 11px; border-radius: var(--r-xs); background: rgba(5, 26, 46, .8); color: #fff; font-size: .8438rem; font-weight: 600; letter-spacing: .01em; transition: background-color .5s var(--ease); }
.film-chip:empty { display: none; }
.film-chip.payoff { background: rgba(11, 111, 105, .95); }
.film-controls { position: absolute; right: 14px; top: 14px; display: flex; gap: 10px; align-items: center; }
.film-btn { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 16px; border: 0; border-radius: var(--r-sm); background: rgba(255, 255, 255, .95); color: var(--navy); font: 600 1rem var(--font); cursor: pointer; }
.film-btn svg { width: 20px; height: 20px; }
.film-toggle { width: 44px; height: 44px; border-radius: 50%; border: 0; display: grid; place-items: center; color: #fff; background: rgba(5, 26, 46, .7); cursor: pointer; transition: background-color .2s; }
.film-toggle:hover { background: rgba(5, 26, 46, .92); }
.film-toggle svg { width: 18px; height: 18px; }
.film-toggle .ic-play { display: none; }
.film-toggle.paused .ic-play { display: block; }
.film-toggle.paused .ic-pause { display: none; }
.with-sound .film-controls { display: none; }
.film-note { display: block; margin-top: 12px; font-size: .8438rem; color: var(--muted); }

/* the storyline beside the film: chapters as a vertical timeline */
.chapters { list-style: none; margin: 34px 0 0; padding: 0; border-left: 1px solid var(--line); }
.chapters li { position: relative; }
.chapter { all: unset; box-sizing: border-box; display: block; width: 100%; padding: 4px 0 18px 20px; cursor: default; }
button.chapter { cursor: pointer; }
button.chapter:focus-visible { outline: 2.5px solid var(--teal); outline-offset: 2px; border-radius: var(--r-xs); }
.ch-bar { position: absolute; left: -1px; top: 0; bottom: 14px; width: 2px; background: transparent; }
.ch-bar span { display: block; width: 100%; height: calc(var(--p, 0) * 100%); background: var(--navy); transition: height .3s linear; }
.chapters li:last-child .ch-bar span { background: var(--teal); }
.ch-head { display: flex; align-items: baseline; gap: 10px; }
.ch-time { font-size: .8125rem; font-weight: 600; color: var(--muted); font-variant-numeric: tabular-nums; }
.ch-label { font-weight: 600; color: var(--ink); }
.chapters li:last-child .ch-label { color: var(--teal-700); }
.ch-text { display: block; margin-top: 2px; color: var(--muted); font-size: .9688rem; }
button.chapter:hover .ch-label { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .2em; }
.chapter.voice .ch-bar span { height: 100%; }

/* placeholder (preview builds only) */
.placeholder { color: var(--on-navy); padding: clamp(18px, 2.4vw, 28px); display: flex; flex-direction: column; gap: 16px; background: linear-gradient(180deg, var(--navy), var(--navy-800)); }
.ph-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; font-size: .9375rem; color: var(--on-navy-muted); }
.ph-tag { display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 3px 7px; border-radius: var(--r-xs); background: #F6C453; color: #3A2A00; }
.ph-story { flex: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.ph-half { border: 1px solid rgba(255, 255, 255, .14); border-radius: var(--r-sm); padding: clamp(18px, 2.4vw, 32px); display: flex; flex-direction: column; justify-content: flex-end; }
.ph-half.voice { border-color: rgba(127, 221, 212, .45); background: rgba(19, 157, 148, .1); }
.ph-step { margin: 0 0 10px; font-size: .9375rem; font-weight: 600; color: var(--teal-on-navy); }
.ph-lede { margin: 0; font-size: clamp(1.1rem, 1rem + .6vw, 1.5rem); line-height: 1.3; font-weight: 600; color: #fff; }
.ph-note { margin: 0; font-size: .9375rem; color: var(--muted); display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

@media (max-width: 960px) {
  .hero-body { grid-template-columns: 1fr; row-gap: 0; }
  /* order on small screens: copy and buttons, then the film, then the storyline */
  .hero-side { display: contents; }
  .hero-side .lead, .hero-side .actions, .hero-side .school-link { order: 1; }
  .hero-body .film { order: 2; margin-top: 28px; }
  .hero-side .chapters { order: 3; }
  .chapters { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; border-left: 0; margin-top: 28px; }
  .chapter { padding: 14px 0 0; }
  .ch-bar { left: 0; right: 0; top: 0; bottom: auto; width: auto; height: 2px; background: var(--line); }
  .ch-bar span { height: 100%; width: calc(var(--p, 0) * 100%); transition: width .3s linear; }
  .chapter.voice .ch-bar span { width: 100%; }
}

/* ---------- sections ---------- */
section { padding: var(--section) 0; }
.section-head { margin-bottom: clamp(40px, 5vw, 72px); max-width: 760px; }
.section-head.split { max-width: none; display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(20px, 4vw, 64px); align-items: end; }
.section-head.split > p, .section-head.split > div > p:not(.label) { margin: 0; font-size: clamp(1.0625rem, 1rem + .2vw, 1.1875rem); color: var(--text); max-width: 44ch; }
.section-head.split .ph-note { margin-top: 10px; }
@media (max-width: 860px) { .section-head.split { grid-template-columns: 1fr; align-items: start; } }

/* ---------- problem: the gaze loop ---------- */
.problem { background: var(--canvas); }
.problem-grid { display: grid; grid-template-columns: minmax(0, 5.6fr) minmax(0, 6.4fr); gap: clamp(32px, 5vw, 80px); align-items: center; }
.problem-copy > p { font-size: 1.1875rem; margin: 22px 0 0; max-width: 40ch; }
.gaze-legend { list-style: none; margin: 32px 0 0; padding: 0; display: grid; gap: 12px; }
.gaze-legend li { display: flex; align-items: center; gap: 14px; font-weight: 500; color: var(--ink); }
.g-n { flex: none; width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font-size: .8125rem; font-weight: 700; background: var(--navy); color: #fff; }
.gaze-legend .away .g-n { background: var(--amber); }
.sum { margin: 30px 0 0; padding-top: 20px; border-top: 1px solid var(--line); font-size: 1.0625rem; color: var(--muted); }
.sum b { color: var(--amber-ink); font-size: 1.25rem; }
.gaze { margin: 0; }
.gaze svg { width: 100%; height: auto; overflow: visible; }
@media (prefers-reduced-motion: no-preference) {
  .gaze.playing .g-path { animation: gazeflow 1.6s linear infinite; }
  .gaze.playing .g-row { animation: rowstep 12s steps(1) infinite; }
  .gaze.playing .g-cell { animation: cellstep 12s steps(1) infinite; }
}
@keyframes gazeflow { to { stroke-dashoffset: -20; } }
@keyframes rowstep { 0% { transform: translateY(0); } 16.66% { transform: translateY(40px); } 33.33% { transform: translateY(80px); } 50% { transform: translateY(120px); } 66.66% { transform: translateY(160px); } 83.33% { transform: translateY(200px); } }
@keyframes cellstep { 0% { transform: translateY(0); } 16.66% { transform: translateY(22px); } 33.33% { transform: translateY(44px); } 50% { transform: translateY(-66px); } 66.66% { transform: translateY(-44px); } 83.33% { transform: translateY(-22px); } }
@media (max-width: 900px) { .problem-grid { grid-template-columns: 1fr; } .gaze { order: -1; max-width: 560px; } }

/* ---------- how it works: annotated product shot ---------- */
.how { background: linear-gradient(180deg, var(--mist) 0%, var(--canvas) 100%); }
.shot-annotated { margin: 0; display: grid; gap: 32px; }
.shot-frame { position: relative; border-radius: var(--r); overflow: hidden; box-shadow: var(--shadow-media); background: var(--navy); }
.shot-frame img { width: 100%; }
.pin { position: absolute; left: var(--x); top: var(--y); transform: translate(-50%, -50%); width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--teal-700); color: #fff; font-size: .875rem; font-weight: 700; box-shadow: 0 0 0 4px rgba(19, 157, 148, .28), 0 4px 10px rgba(0, 0, 0, .25); }
.shot-play { position: absolute; left: 16px; bottom: 16px; display: inline-flex; align-items: center; gap: 12px; padding: 8px 16px 8px 8px; border: 0; border-radius: var(--r-sm); background: rgba(255, 255, 255, .96); color: var(--ink); font: 600 1rem var(--font); cursor: pointer; transition: transform .2s var(--ease); }
.shot-play:hover { transform: translateY(-1px); }
.shot-play svg { width: 34px; height: 34px; padding: 10px 9px 10px 12px; border-radius: var(--r-xs); background: var(--teal-700); color: #fff; }
.shot-play span { color: var(--muted); font-weight: 500; }
.pin-legend { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.pin-legend li { display: grid; grid-template-columns: 30px 1fr; gap: 14px; align-items: start; font-size: 1.0625rem; line-height: 1.45; }
.pin-n { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--teal-700); color: #fff; font-size: .875rem; font-weight: 700; }
.setup { margin-top: clamp(48px, 6vw, 80px); display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: clamp(20px, 3vw, 48px); padding-top: 28px; border-top: 1px solid var(--line); }
.setup-h { margin: 0; font-weight: 600; color: var(--ink); }
.setup-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(16px, 3vw, 40px); counter-reset: s; }
.setup-steps li { font-size: 1rem; color: var(--text); }
.setup-steps li::before { counter-increment: s; content: "0" counter(s); display: block; font-size: .8125rem; font-weight: 700; color: var(--teal-700); letter-spacing: .06em; margin-bottom: 6px; }
@media (max-width: 1000px) { .pin-legend { grid-template-columns: 1fr 1fr; } }
@media (max-width: 760px) { .setup { grid-template-columns: 1fr; } .setup-steps { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .pin { width: 22px; height: 22px; font-size: .75rem; box-shadow: 0 0 0 3px rgba(19, 157, 148, .3); } .pin-legend { grid-template-columns: 1fr; } .shot-play { position: static; margin-top: 12px; width: 100%; justify-content: flex-start; } .shot-frame { overflow: visible; background: none; box-shadow: none; } .shot-frame img { border-radius: var(--r-sm); box-shadow: var(--shadow-media); } }

/* ---------- accuracy: principle + evidence ---------- */
.checks { color: var(--on-navy); background: radial-gradient(55% 70% at 100% 0%, rgba(19, 157, 148, .15), transparent 70%), linear-gradient(180deg, var(--navy) 0%, var(--navy-900) 100%); }
.checks h2 { color: #fff; }
.checks a { color: var(--teal-on-navy); }
.checks-grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: clamp(36px, 6vw, 96px); align-items: start; }
.checks-copy > p:not(.label) { font-size: 1.1875rem; color: var(--on-navy); margin: 22px 0 0; max-width: 46ch; }
.vocab { margin: 40px 0 0; padding: 22px 0; border-top: 1px solid rgba(255, 255, 255, .14); border-bottom: 1px solid rgba(255, 255, 255, .14); }
.vocab-label { margin: 0; font-size: .9688rem; color: var(--on-navy-muted); }
.vocab-words { margin: 10px 0; font-size: clamp(1.35rem, 1.1rem + .9vw, 1.85rem); line-height: 1.35; font-weight: 600; letter-spacing: -0.02em; color: #fff; }
.vocab-words .cmd { color: var(--teal-on-navy); }
.checks .limit { margin: 28px 0 0; font-size: 1rem; color: var(--on-navy-muted); max-width: 52ch; }
.checks .limit b { color: #fff; }
.evidence { display: grid; gap: 36px; }
.evidence figure { margin: 0; }
.evidence img { width: 100%; max-width: 380px; border-radius: var(--r-sm); }
.evidence figcaption { margin-top: 14px; font-size: 1.0313rem; color: var(--on-navy); max-width: 44ch; }
.evidence figcaption b { color: #fff; display: block; font-size: 1.125rem; margin-bottom: 2px; }
.ev-heard { display: block; font-size: .875rem; color: var(--teal-on-navy); margin-bottom: 6px; letter-spacing: .01em; }
@media (max-width: 900px) { .checks-grid { grid-template-columns: 1fr; } }

/* ---------- origin story ---------- */
.story { background: var(--stone); }
.story-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.story h2 { font-size: clamp(2.2rem, 1.4rem + 2.4vw, 3.5rem); }
.story-lede { font-size: clamp(1.3rem, 1.15rem + .5vw, 1.6rem); line-height: 1.38; color: var(--ink); font-weight: 500; letter-spacing: -0.012em; margin: 0 0 20px; }
.story-body > p:not(.story-lede) { font-size: 1.125rem; max-width: 56ch; }
.principles { list-style: none; margin: 36px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(16px, 3vw, 36px); }
.principles li { padding-top: 16px; border-top: 1.5px solid var(--ink); font-size: .9688rem; color: var(--text); }
.principles b { display: block; font-size: 1.0625rem; margin-bottom: 6px; }
.voices { max-width: var(--wrap); margin: clamp(48px, 6vw, 80px) auto 0; padding: 0 var(--gutter); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(20px, 4vw, 64px); }
.voices blockquote { margin: 0; padding-left: 22px; border-left: 2px solid var(--teal); }
.voices blockquote p { font-size: clamp(1.2rem, 1.05rem + .4vw, 1.4rem); line-height: 1.42; color: var(--ink); font-weight: 500; letter-spacing: -0.01em; }
.voices footer { color: var(--muted); font-size: 1rem; }
.voices footer b { display: block; color: var(--ink); }
.voices .preview-slot { border: 1.5px dashed var(--line-strong); border-radius: var(--r-sm); padding: 22px; color: var(--muted); }
@media (max-width: 900px) { .story-grid { grid-template-columns: 1fr; } .principles { grid-template-columns: 1fr; } }
@media (max-width: 760px) { .voices { grid-template-columns: 1fr; } }

/* ---------- where it works ---------- */
.compat { background: linear-gradient(180deg, var(--canvas), var(--mist)); }
.compat-table { overflow-x: auto; }
.compat table { width: 100%; border-collapse: collapse; font-size: 1.0313rem; }
.compat th, .compat td { text-align: left; vertical-align: top; padding: 20px 20px 20px 0; border-top: 1px solid var(--line); }
.compat thead th { border-top: 0; padding-bottom: 16px; font-size: 1.25rem; font-weight: 620; color: var(--ink); letter-spacing: -0.015em; }
.compat thead th span { display: block; font-size: .9375rem; font-weight: 500; color: var(--muted); letter-spacing: 0; }
.compat tbody th { width: 18%; font-weight: 600; color: var(--muted); font-size: .9375rem; }
.compat td { width: 41%; color: var(--text); }
.compat td svg { display: inline-block; width: 18px; height: 18px; vertical-align: -3px; margin-right: 8px; }
.compat td svg.ok { color: var(--teal-700); }
.compat td svg.no { color: var(--muted); }
.compat tbody tr:first-child td { color: var(--ink); font-weight: 500; }
@media (max-width: 700px) {
  .compat table, .compat tbody, .compat tr, .compat th, .compat td { display: block; width: auto; }
  .compat thead { display: none; }
  .compat tbody tr { padding: 14px 0; border-top: 1px solid var(--line); }
  .compat tbody th { border: 0; padding: 0 0 6px; width: auto; }
  .compat td { border: 0; padding: 4px 0; }
  .compat td::before { display: block; font-size: .8125rem; font-weight: 600; color: var(--ink); }
  .compat td:nth-of-type(1)::before { content: "Excel add-in"; }
  .compat td:nth-of-type(2)::before { content: "Online marksheets"; margin-top: 8px; }
}

/* ---------- pricing: one price sheet, two routes ---------- */
.pricing { background: radial-gradient(60% 60% at 70% 60%, rgba(19, 157, 148, .09), transparent 70%), var(--canvas); }
.price-sheet { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-radius: 14px; overflow: hidden; box-shadow: 0 1px 1px rgba(8, 36, 63, .06), 0 40px 80px -40px rgba(8, 36, 63, .5); }
.price-sheet-1 { grid-template-columns: minmax(0, 620px); justify-content: start; }
.offer { position: relative; display: flex; flex-direction: column; padding: clamp(32px, 4vw, 56px); background: var(--paper); }
.offer-school { color: var(--on-navy); background: radial-gradient(90% 70% at 100% 0%, rgba(19, 157, 148, .26), transparent 65%), linear-gradient(160deg, var(--navy-800) 0%, var(--navy-900) 100%); }
.offer-for { margin: 0 0 22px; font-size: .78rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--teal-700); display: flex; align-items: center; gap: 10px; }
.offer-for::before { content: ""; width: 20px; height: 1.5px; background: currentColor; }
.offer-school .offer-for { color: var(--teal-on-navy); }
.offer-name { font-size: 1.5rem; letter-spacing: -0.02em; font-weight: 620; margin: 0 0 18px; }
.offer-school .offer-name { color: #fff; }
.offer-price { margin: 0; display: flex; align-items: flex-start; gap: 4px; line-height: 1; color: var(--ink); font-variant-numeric: lining-nums tabular-nums; }
.offer-school .offer-price { color: #fff; }
.offer-price .cur { font-size: clamp(1.6rem, 1.2rem + 1vw, 2.2rem); font-weight: 560; margin-top: .3em; letter-spacing: -0.02em; }
.offer-price .amt { font-size: clamp(4rem, 2.8rem + 4vw, 6rem); font-weight: 600; letter-spacing: -0.055em; font-stretch: 88%; }
.offer-price .per { align-self: flex-end; margin: 0 0 .55em 10px; font-size: 1.0625rem; color: var(--muted); }
.offer-school .offer-price .per { color: var(--on-navy-muted); }
.offer-sum { margin: 18px 0 0; font-size: 1.125rem; color: var(--text); max-width: 34ch; }
.offer-school .offer-sum { color: var(--on-navy); }
.offer-value { display: block; margin-top: 4px; font-size: .9688rem; font-weight: 600; color: var(--teal-on-navy); }
.offer-cta { width: 100%; margin-top: 30px; min-height: 56px; }
.offer-cta-off { background: transparent; color: var(--muted); border-color: var(--line-strong); opacity: 1; }
.offer-school .offer-cta-off { color: var(--on-navy-muted); border-color: rgba(255, 255, 255, .25); }
.offer-secure { margin: 12px 0 0; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: .875rem; color: var(--muted); }
.offer-school .offer-secure { color: var(--on-navy-muted); }
.offer-secure svg { width: 14px; height: 14px; }
.offer-list { list-style: none; margin: 32px 0 0; padding: 26px 0 0; border-top: 1px solid var(--line); display: grid; gap: 13px; }
.offer-school .offer-list { border-top-color: rgba(255, 255, 255, .14); }
.offer-list li { display: grid; grid-template-columns: 20px 1fr; gap: 12px; font-size: 1.0313rem; line-height: 1.45; color: var(--ink); }
.offer-school .offer-list li { color: #fff; }
.offer-list svg { width: 18px; height: 18px; margin-top: 3px; color: var(--teal-700); }
.offer-school .offer-list svg { color: var(--teal-on-navy); }
.offer-delivery { margin: auto 0 0; padding-top: 26px; font-size: .9375rem; color: var(--muted); }
.offer-school .offer-delivery { color: var(--on-navy-muted); }
.price-foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 12px 32px; margin-top: 28px; }
.more-staff { margin: 0; font-size: 1.0625rem; color: var(--ink); }
.more-staff a { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; margin-left: 6px; text-decoration: none; border-bottom: 1px solid currentColor; }
.more-staff a svg { width: 16px; height: 16px; transition: transform .2s var(--ease); }
.more-staff a:hover svg { transform: translateX(3px); }
.price-notes { margin: 0; font-size: .9375rem; color: var(--muted); }
@media (max-width: 860px) { .price-sheet { grid-template-columns: 1fr; } }

/* ---------- FAQ ---------- */
.faq-section { background: var(--stone); }
.faq-group { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: clamp(16px, 4vw, 64px); padding: 28px 0; border-top: 1px solid #DCD7CC; }
.faq-group:last-child { border-bottom: 1px solid #DCD7CC; }
.faq-group h3 { font-size: .8125rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); font-weight: 600; padding-top: 6px; }
.faq details + details { border-top: 1px solid #E4DFD5; }
.faq summary { list-style: none; cursor: pointer; padding: 6px 44px 14px 0; position: relative; font-size: 1.1875rem; font-weight: 550; color: var(--ink); letter-spacing: -0.012em; transition: color .2s; }
.faq details + details summary { padding-top: 14px; }
.faq summary:hover { color: var(--teal-700); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 10px; top: calc(50% - 4px); width: 8px; height: 8px; border-right: 1.6px solid var(--teal-700); border-bottom: 1.6px solid var(--teal-700); transform: translateY(-60%) rotate(45deg); transition: transform .25s var(--ease); }
.faq details[open] summary::after { transform: translateY(-20%) rotate(-135deg); }
.faq .answer { padding: 0 0 18px; max-width: 62ch; }
.faq .answer p { margin: 0; }
@media (max-width: 760px) { .faq-group { grid-template-columns: 1fr; gap: 10px; padding: 22px 0; } }

/* ---------- close ---------- */
.cta { background: radial-gradient(55% 90% at 100% 100%, rgba(19, 157, 148, .2), transparent 70%), var(--navy); color: var(--on-navy); }
.cta h2 { color: #fff; font-size: clamp(2.2rem, 1.4rem + 2.6vw, 3.6rem); }
.cta a:not(.btn) { color: var(--teal-on-navy); }
.cta-grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: clamp(28px, 5vw, 80px); align-items: center; }
.cta-grid > div > p { font-size: 1.1875rem; color: var(--on-navy); max-width: 40ch; margin: 20px 0 0; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.cta-actions:empty { display: none; }
.signup { background: var(--paper); color: var(--text); border-radius: var(--r); padding: clamp(22px, 3vw, 34px); }
.cta .signup a { color: var(--teal-700); }
.signup .ph-note { margin-bottom: 16px; }
.field-label { display: block; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.field-row { display: flex; gap: 10px; flex-wrap: wrap; }
.field-row input { flex: 1 1 240px; min-height: 50px; padding: 0 16px; font: 400 1.0625rem var(--font); color: var(--ink); background: #fff; border: 1px solid var(--line-strong); border-radius: var(--r-sm); transition: border-color .2s, box-shadow .2s; }
.field-row input:focus { outline: none; border-color: var(--teal-700); box-shadow: 0 0 0 3px rgba(19, 157, 148, .25); }
.field-row input[aria-invalid="true"] { border-color: var(--bad); }
.field-row .btn { flex: 0 0 auto; }
.field-error { color: var(--bad); font-size: 1rem; margin: 8px 0 0; }
.consent { display: flex; gap: 10px; align-items: flex-start; margin-top: 16px; font-size: 1rem; color: var(--ink); cursor: pointer; }
.consent input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--teal-700); flex: none; }
.field-help { font-size: .9375rem; color: var(--muted); margin: 12px 0 0; }
.signup-status { margin: 12px 0 0; font-weight: 600; min-height: 1.5em; }
.signup-status.ok { color: var(--teal-700); }
.signup-status.err { color: var(--bad); }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
@media (max-width: 900px) { .cta-grid { grid-template-columns: 1fr; } }

/* ---------- footer ---------- */
.site-footer { background: var(--navy-900); color: var(--on-navy-muted); padding: 56px 0 40px; font-size: .9688rem; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 4fr) repeat(3, minmax(0, 2.4fr)); gap: 32px clamp(24px, 4vw, 56px); }
.footer-brand img { width: 136px; aspect-ratio: 822 / 166; }
.footer-brand p { margin: 14px 0 0; max-width: 30ch; }
.f-h { margin: 0 0 12px; font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--on-navy-muted); font-weight: 600; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.site-footer a { color: var(--on-navy); text-decoration: none; overflow-wrap: anywhere; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.footer-base { grid-column: 1 / -1; margin: 16px 0 0; padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, .1); font-size: .875rem; color: var(--on-navy-muted); }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }

/* ---------- video dialog ---------- */
.video-dialog { width: min(1180px, calc(100vw - 32px)); max-height: calc(100vh - 32px); padding: 0; border: 0; border-radius: var(--r); background: var(--navy-900); color: var(--on-navy); }
.video-dialog::backdrop { background: rgba(3, 13, 24, .82); }
.dialog-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 12px 12px 20px; }
.dialog-head h2 { color: #fff; font-size: 1.0625rem; letter-spacing: 0; font-weight: 600; }
.dialog-close { width: 44px; height: 44px; border-radius: var(--r-sm); border: 0; background: rgba(255, 255, 255, .1); color: #fff; display: grid; place-items: center; cursor: pointer; }
.dialog-close:hover { background: rgba(255, 255, 255, .18); }
.dialog-close svg { width: 20px; height: 20px; }
.dialog-video { width: 100%; max-height: calc(100vh - 170px); background: #000; }
.dialog-note { margin: 0; padding: 12px 20px 16px; font-size: .9375rem; color: var(--on-navy-muted); }
.media-error { position: absolute; inset: auto 14px 14px 14px; padding: 10px 14px; border-radius: var(--r-sm); background: rgba(5, 26, 46, .92); color: #fff; font-size: .9375rem; }

/* ---------- help and checkout status pages ---------- */
.doc { max-width: 800px; padding: clamp(40px, 5vw, 76px) 0 var(--section); }
.doc h1 { font-size: clamp(2.2rem, 1.6rem + 2vw, 3.2rem); margin-bottom: .4em; }
.doc h2 { margin: 1.7em 0 .5em; font-size: clamp(1.5rem, 1.3rem + .8vw, 2rem); }
.doc h3 { margin: 1.3em 0 .4em; }
.doc table { width: 100%; border-collapse: collapse; margin: 0 0 1.2em; background: var(--paper); font-size: 1rem; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 12px 14px; border: 1px solid var(--line); }
.doc th { background: var(--mist); color: var(--ink); }
.doc .table-scroll { overflow-x: auto; }
.callout { padding: 14px 18px; background: var(--teal-50); border-left: 3px solid var(--teal); border-radius: 0 var(--r-sm) var(--r-sm) 0; margin: 0 0 1.2em; }
.toc { display: flex; flex-wrap: wrap; gap: 8px 20px; padding: 0; list-style: none; margin: 0 0 1em; }
.status-page { max-width: 680px; }
.status-icon { width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; font-size: 1.5rem; font-weight: 700; background: var(--mist); color: var(--navy); margin: 0 0 18px; }
.status-icon.ok { background: var(--teal-700); color: #fff; }
.status-page .lead { max-width: none; margin-bottom: 1em; }
/* help/status pages keep the simpler footer markup */
.site-footer .footer-grid > div:first-child p { max-width: 56ch; }
.site-footer nav[aria-label="Footer"] ul { display: flex; flex-wrap: wrap; gap: 10px 24px; }

/* ---------- phones ---------- */
@media (max-width: 640px) {
  .hero-body { margin-top: 28px; }
  .hero-body .film { margin: 0 calc(var(--gutter) * -1); }
  .hero-body .video-frame { border-radius: 0; box-shadow: none; }
  .film-chip { left: 12px; top: 12px; max-width: calc(100% - 76px); font-size: .78rem; padding: 5px 9px; }
  .film-controls { right: 12px; top: 10px; }
  .film-note { padding: 0 var(--gutter); }
  .chapters { grid-template-columns: 1fr; gap: 0; }
  .chapter { padding: 12px 0 10px; }
  .actions .btn { flex: 1 1 auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- guide page ---------- */
.guide .lead { font-size: 1.25rem; margin: 0 0 1.4em; max-width: none; }
.guide ul { padding-left: 1.2em; }
.guide li { margin-bottom: .45em; }
.guide h3 { font-size: 1.1875rem; }
.guide-cta { margin-top: 2.6em; padding: 26px 28px; border-radius: var(--r); background: var(--navy); color: var(--on-navy); }
.guide-cta b { color: #fff; }
.guide-cta p { margin: 0 0 16px; }
.sum p { margin: 0; }
.sum .sum-beat { margin-top: 10px; font-weight: 600; color: var(--ink); }
.sum .sum-link { margin-top: 10px; font-size: .9688rem; }

.film-caption { margin: 28px 0 0; padding-left: 16px; border-left: 2px solid var(--teal); font-size: .9688rem; color: var(--muted); max-width: 34ch; }