/* ============================================================================
   Remediate — marketing site
   Palette: paper white, ink navy, Remediate blue, signal red.
   Type: Lexend (UI + display) with Instrument Serif italic accents.
   ========================================================================== */

/* ------------------------------------------------------------------- fonts -- */

@font-face {
  font-family: 'Lexend';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/fonts/lexend-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Lexend';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/fonts/lexend-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Instrument Serif';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/instrument-serif-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Instrument Serif';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/instrument-serif-italic-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ------------------------------------------------------------------ tokens -- */

:root {
  --font-sans: 'Lexend', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Helvetica, Arial, sans-serif;
  --font-serif: 'Instrument Serif', 'Iowan Old Style', Georgia, serif;
  --font-mono: ui-monospace, 'SFMono-Regular', 'JetBrains Mono', Menlo, Consolas, monospace;

  --ink: #0a1a2f;
  --ink-2: #14263f;
  --muted: #4f6076;
  --faint: #5e6d82;

  --paper: #fdfdff;
  --paper-2: #f6f8fc;
  --paper-3: #edf1f7;

  --line: #e1e7f0;
  --line-strong: #c9d4e3;

  --blue: #1f49c0;
  --blue-600: #173a9c;
  --blue-100: #dfe8ff;
  --blue-050: #eff3ff;

  --red: #d32b45;
  --red-600: #ad1e34;
  --red-050: #fdeef1;

  --white: #ffffff;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-xl: 30px;

  --shadow-xs: 0 1px 2px rgba(10, 26, 47, 0.05);
  --shadow-sm: 0 2px 6px rgba(10, 26, 47, 0.05), 0 1px 2px rgba(10, 26, 47, 0.04);
  --shadow-md: 0 16px 40px -20px rgba(10, 26, 47, 0.28), 0 4px 12px -6px rgba(10, 26, 47, 0.08);
  --shadow-lg: 0 46px 100px -48px rgba(10, 26, 47, 0.5), 0 14px 40px -24px rgba(10, 26, 47, 0.22);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --shell: 1220px;
  --header-height: 76px;
}

/* -------------------------------------------------------------------- base -- */

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.62;
  color: var(--muted);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.032em;
  text-wrap: balance;
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; }
img { max-width: 100%; height: auto; }
a { color: var(--blue); text-underline-offset: 3px; }
button { font: inherit; color: inherit; }
code { font-family: var(--font-mono); font-size: 0.9em; }

::selection { background: var(--blue-100); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 6px;
}

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: clamp(20px, 4.4vw, 44px);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 200;
  padding: 12px 18px;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { top: 12px; }

.icon-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.icon {
  width: 1.1em;
  height: 1.1em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Display serif accent */
.serif-accent {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.015em;
  color: var(--red);
}
.serif-accent--ink { color: var(--red); }

/* ----------------------------------------------------------------- buttons -- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 50px;
  padding: 0 1.3rem;
  border: 1px solid transparent;
  border-radius: 12px;
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 180ms var(--ease), background-color 180ms var(--ease),
    border-color 180ms var(--ease), box-shadow 180ms var(--ease), color 180ms var(--ease);
}
.btn .icon { transition: transform 200ms var(--ease); }
.btn:hover .icon { transform: translateX(2px); }

.btn--primary {
  background: var(--ink);
  color: #fff;
  box-shadow: 0 14px 30px -16px rgba(10, 26, 47, 0.7);
}
.btn--primary:hover { background: #13304f; transform: translateY(-1px); }
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
  background: rgba(255, 255, 255, 0.7);
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn--ghost:hover { background: #fff; border-color: var(--ink); transform: translateY(-1px); }

.btn--sm { min-height: 40px; padding: 0 1rem; font-size: 0.85rem; border-radius: 10px; }

.btn--light { background: #fff; color: var(--ink); box-shadow: 0 16px 36px -18px rgba(0, 0, 0, 0.6); }
.btn--light:hover { background: #f2f5fb; transform: translateY(-1px); }

.btn--outline-light { border-color: rgba(255, 255, 255, 0.28); color: #fff; background: rgba(255, 255, 255, 0.04); }
.btn--outline-light:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.5); transform: translateY(-1px); }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--blue);
  text-decoration: none;
}
.text-link .icon { transition: transform 200ms var(--ease); }
.text-link:hover .icon { transform: translateX(3px); }

/* ------------------------------------------------------------------- hero -- */

.hero {
  position: relative;
  padding: clamp(56px, 7.2vw, 104px) 0 clamp(40px, 5vw, 64px);
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  inset: -220px 0 auto 0;
  height: 880px;
  background:
    radial-gradient(720px 420px at 18% 22%, rgba(31, 73, 192, 0.13), transparent 66%),
    radial-gradient(620px 380px at 82% 8%, rgba(211, 43, 69, 0.1), transparent 64%),
    radial-gradient(900px 520px at 50% 0%, rgba(31, 73, 192, 0.06), transparent 70%);
  pointer-events: none;
}
.hero-glow::after {
  content: '';
  position: absolute;
  inset: 80px 0 0;
  background-image: radial-gradient(circle, rgba(10, 26, 47, 0.09) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(620px 320px at 50% 30%, #000 0%, transparent 78%);
  mask-image: radial-gradient(620px 320px at 50% 30%, #000 0%, transparent 78%);
  opacity: 0.55;
}

.hero-inner { position: relative; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 14px 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow-xs);
  color: var(--ink-2);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.005em;
}
.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(211, 43, 69, 0.12);
}

.hero-title {
  max-width: 17ch;
  margin: 0 auto;
  font-size: clamp(2.9rem, 6.3vw, 5.25rem);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: -0.05em;
}
.hero-title .serif-accent {
  display: block;
  margin-top: 0.06em;
  font-size: 1.06em;
  letter-spacing: -0.018em;
}

.hero-lead {
  max-width: 61ch;
  margin: 26px auto 0;
  color: var(--muted);
  font-size: clamp(1.02rem, 1.45vw, 1.16rem);
  line-height: 1.66;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}

.hero-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 26px;
  margin-top: 20px;
  color: var(--faint);
  font-size: 0.78rem;
  font-weight: 500;
}
.hero-note-item { display: inline-flex; align-items: center; gap: 7px; }
.hero-note .icon { width: 15px; height: 15px; color: var(--blue); stroke-width: 2.4; }

.hero-visual {
  position: relative;
  max-width: 1190px;
  margin: clamp(44px, 5.5vw, 70px) auto 0;
}
.hero-visual::before {
  content: '';
  position: absolute;
  inset: 6% 4% -6%;
  border-radius: 40px;
  background: linear-gradient(120deg, rgba(31, 73, 192, 0.18), rgba(211, 43, 69, 0.14));
  filter: blur(52px);
  opacity: 0.7;
  z-index: -1;
}

.frame {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.frame--hero { border-radius: 18px; }
.frame-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 48px;
  padding: 0 16px;
  background: linear-gradient(180deg, #f8fafd, #f1f5fa);
  border-bottom: 1px solid var(--line);
}
.frame-dots { display: inline-flex; gap: 6px; }
.frame-dots i {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: #d7dfea;
}
.frame-dots i:first-child { background: #f0b3bd; }
.frame-dots i:nth-child(2) { background: #f2d4a8; }
.frame-dots i:nth-child(3) { background: #b9dcc6; }

.frame-url {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex: 1;
  max-width: 380px;
  margin-inline: auto;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--faint);
  font-size: 0.72rem;
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.frame-url .icon { width: 13px; height: 13px; color: var(--blue); }
.frame-badge {
  flex: none;
  padding: 3px 9px;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.frame img { width: 100%; }

.hero-caption {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: 18px;
  padding-inline: 6px;
  color: var(--faint);
  font-size: 0.8rem;
}
.hero-caption a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}
.hero-caption a:hover { color: var(--blue); }
.hero-caption .icon { width: 14px; height: 14px; }


/* ------------------------------------------------------------------ trust -- */

.trust { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper-2); }
.trust-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px 32px;
  padding-block: 22px;
}
.trust-label {
  color: var(--faint);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.trust-list { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 34px; }
.trust-list li {
  color: var(--ink-2);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.78;
}

/* --------------------------------------------------------------- sections -- */

.section { padding-block: clamp(72px, 8.5vw, 122px); }
.section--tint {
  background: linear-gradient(180deg, #f8fafd 0%, #f4f7fc 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head { max-width: 780px; }
.section-head--wide { max-width: 860px; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  color: var(--ink-2);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.kicker::before {
  content: '';
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--red);
}
.kicker span { color: var(--red); font-weight: 700; }
.kicker--light { color: #c8d4e5; }

.section h2 {
  font-size: clamp(2rem, 3.7vw, 3.15rem);
  letter-spacing: -0.042em;
  line-height: 1.06;
}
.section-lead {
  margin-top: 22px;
  color: var(--muted);
  font-size: clamp(1rem, 1.25vw, 1.09rem);
  line-height: 1.68;
  max-width: 68ch;
}

/* --------------------------------------------------------------------- why -- */

.gap-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
  margin-top: clamp(44px, 5vw, 64px);
}

.gap-point {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 16px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.gap-point:first-child { padding-top: 0; border-top: 0; }
.gap-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--red-050);
  color: var(--red-600);
  font-size: 0.78rem;
  font-weight: 700;
}
.gap-point h3 { font-size: 1.08rem; letter-spacing: -0.02em; margin-bottom: 8px; }
.gap-point p { font-size: 0.94rem; line-height: 1.68; color: var(--muted); }

.sr-demo {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.sr-demo-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: linear-gradient(180deg, #f8fafd, #f3f7fc);
  border-bottom: 1px solid var(--line);
}
.sr-demo-title {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--faint);
}

.segmented {
  display: inline-flex;
  padding: 3px;
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #fff;
}
.segmented button {
  padding: 6px 12px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 150ms var(--ease), color 150ms var(--ease);
}
.segmented button[aria-selected='true'] { background: var(--ink); color: #fff; }
.segmented button:hover:not([aria-selected='true']) { background: var(--paper-3); color: var(--ink); }

.sr-panel { padding: 18px 20px 6px; min-height: 322px; }
.sr-line {
  display: grid;
  grid-template-columns: 104px 1fr;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 0.8rem;
  line-height: 1.5;
}
.sr-line span {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-2);
  font-weight: 600;
  padding-top: 2px;
}
.sr-line em { font-style: normal; color: var(--muted); }
.sr-line--bad span { color: var(--red-600); }
.sr-line--bad em { color: #6b7687; }
.sr-good { color: var(--blue) !important; }

.sr-verdict {
  margin-top: 16px;
  padding: 13px 14px;
  border-radius: 10px;
  background: var(--red-050);
  color: #8d2438;
  font-size: 0.8rem;
  line-height: 1.55;
}
.sr-verdict--good { background: var(--blue-050); color: var(--blue-600); }
.sr-note { padding: 12px 2px 14px; color: var(--faint); font-size: 0.68rem; }

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(40px, 5vw, 60px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.stat { padding: 28px 30px; }
.stat + .stat { border-left: 1px solid var(--line); }
.stat-number {
  color: var(--ink);
  font-size: clamp(1.5rem, 2.2vw, 1.95rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.1;
}
.stat-copy { margin-top: 10px; font-size: 0.9rem; line-height: 1.6; color: var(--muted); }
.stat-source { margin-top: 14px; font-size: 0.66rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--faint); }

/* ------------------------------------------------------------------- steps -- */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: clamp(44px, 5vw, 66px);
  border-top: 1px solid var(--line-strong);
}
.step {
  position: relative;
  padding: 28px 28px 0 0;
}
.step + .step { padding-left: 28px; border-left: 1px solid var(--line); }
.step-number {
  display: block;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 2.1rem;
  line-height: 1;
  color: var(--red);
}
.step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-top: 20px;
  border-radius: 11px;
  background: var(--blue-050);
  color: var(--blue);
  border: 1px solid #d9e3fb;
}
.step-icon .icon { width: 20px; height: 20px; }
.step h3 { margin-top: 16px; font-size: 1.02rem; letter-spacing: -0.02em; }
.step p { margin-top: 8px; font-size: 0.88rem; line-height: 1.66; color: var(--muted); }

/* ------------------------------------------------------------------ bento -- */

.bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
  margin-top: clamp(44px, 5vw, 62px);
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-xs);
  overflow: hidden;
  transition: box-shadow 260ms var(--ease), transform 260ms var(--ease), border-color 260ms var(--ease);
}
.card:hover { box-shadow: var(--shadow-md); border-color: var(--line-strong); transform: translateY(-2px); }

.card--a { grid-column: span 7; }
.card--b { grid-column: span 5; }
.card--c { grid-column: span 5; }
.card--d { grid-column: span 7; }
.card--e { grid-column: span 6; }
.card--f { grid-column: span 6; }

.card-tag {
  display: inline-block;
  margin-bottom: 2px;
  color: var(--red);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.card h3 { font-size: 1.22rem; letter-spacing: -0.028em; line-height: 1.2; }
.card p { font-size: 0.9rem; line-height: 1.65; color: var(--muted); }

.check-list { display: flex; flex-direction: column; gap: 8px; margin-top: 6px; }
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  color: var(--ink-2);
  font-size: 0.85rem;
  line-height: 1.5;
}
.check-list .icon { width: 15px; height: 15px; margin-top: 2px; color: var(--blue); stroke-width: 2.4; }
.check-list--stack { margin-top: 24px; }
.check-list--stack li { font-size: 0.9rem; }

.card--a { padding: 0; }
.card--a .card-copy { display: flex; flex-direction: column; gap: 10px; padding: 28px 28px 4px; }
.card--a .card-media { margin-top: auto; height: 268px; border-top: 1px solid var(--line); }

.card-media { position: relative; overflow: hidden; background: #fff; }
.card-media img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 50%; }

/* Card B — translation pair */
.translate-demo {
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--paper-2);
}
.translate-row { display: flex; flex-direction: column; gap: 2px; padding: 11px 14px; }
.translate-lang {
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--faint);
}
.translate-row p { font-size: 0.85rem; color: var(--ink-2); }
.translate-row--out { background: var(--blue-050); border-top: 1px solid #dbe5fb; }
.translate-row--out p { color: var(--blue-600); font-weight: 500; }
.translate-arrow {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
}

/* Card D — answer preview */
.answer-demo {
  margin-top: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, #ffffff, #f8fafd);
}
.answer-q {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--ink);
}
.answer-q span {
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--faint);
}
.answer-a {
  margin-top: 10px;
  padding: 12px 14px;
  border: 1px solid #dbe5fb;
  border-radius: 10px;
  background: var(--blue-050);
}
.answer-a p { font-size: 0.83rem; line-height: 1.6; color: var(--ink-2); }
.answer-a strong { color: var(--ink); font-weight: 600; }
.answer-cite {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 9px;
  font-size: 0.68rem !important;
  color: var(--blue-600) !important;
}
.answer-cite .icon { width: 12px; height: 12px; }

/* Card E — shortcuts */
.keycaps { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: auto; padding-top: 18px; }
.keycaps span { display: inline-flex; align-items: center; gap: 4px; font-size: 0.66rem; color: var(--faint); }
kbd {
  padding: 2px 5px;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: #fff;
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  line-height: 1.4;
}

/* Card B — language chips */
.lang-chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 6px; }
.lang-chips li {
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--ink-2);
  font-size: 0.74rem;
  font-weight: 500;
}
.card-foot { margin-top: auto; padding-top: 8px; font-size: 0.72rem !important; color: var(--faint) !important; }

/* Card C — reading toggles */
.demo-toggles { display: flex; flex-direction: column; gap: 11px; margin-top: 10px; }
.demo-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--ink-2);
}
.demo-toggle-track {
  position: relative;
  width: 34px;
  height: 19px;
  flex: none;
  border-radius: 999px;
  background: #dfe5ee;
  transition: background-color 160ms var(--ease);
}
.demo-toggle-knob {
  position: absolute;
  top: 2px; left: 2px;
  width: 15px; height: 15px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(10, 26, 47, 0.3);
}
.demo-toggle.is-on .demo-toggle-track { background: var(--blue); }
.demo-toggle.is-on .demo-toggle-knob { left: auto; right: 2px; }

/* Card E — mini search */
.mini-search {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 8px;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--paper-2);
  box-shadow: inset 0 1px 2px rgba(10, 26, 47, 0.04);
  font-size: 0.8rem;
}
.mini-search .icon { width: 15px; height: 15px; color: var(--faint); }
.mini-search span { color: var(--ink-2); }
.mini-search em {
  margin-left: auto;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--blue-050);
  color: var(--blue-600);
  font-size: 0.64rem;
  font-style: normal;
  font-weight: 600;
}

/* Card F — phone */
.phone {
  position: relative;
  width: 200px;
  height: 300px;
  margin: 14px auto 0;
  padding: 7px;
  border-radius: 26px;
  background: var(--ink);
  box-shadow: 0 22px 40px -26px rgba(10, 26, 47, 0.7);
  overflow: hidden;
}
.phone-notch {
  position: absolute;
  top: 11px; left: 50%;
  transform: translateX(-50%);
  width: 56px; height: 5px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
  z-index: 2;
}
.phone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 0;
  border-radius: 20px;
  background: #fff;
}

/* -------------------------------------------------------------- standards -- */

.section--ink {
  position: relative;
  background: var(--ink);
  color: #c3d0e1;
  overflow: hidden;
}
.section--ink::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(760px 420px at 12% 0%, rgba(31, 73, 192, 0.34), transparent 64%),
    radial-gradient(720px 460px at 92% 12%, rgba(211, 43, 69, 0.2), transparent 62%);
  pointer-events: none;
}
.section--ink .shell { position: relative; }
.section--ink h2, .section--ink h3 { color: #fff; }
.section--ink .section-lead { color: #b7c5d9; }
.section--ink .serif-accent { color: #ffbcc6; }

.standards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: clamp(40px, 5vw, 58px);
}
.standard {
  padding: 26px 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.045);
  transition: background-color 240ms var(--ease), border-color 240ms var(--ease), transform 240ms var(--ease);
}
.standard:hover { background: rgba(255, 255, 255, 0.075); border-color: rgba(255, 255, 255, 0.24); transform: translateY(-2px); }
.standard-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 10px;
  background: rgba(31, 73, 192, 0.28);
  border: 1px solid rgba(168, 193, 255, 0.24);
  color: #c9d8ff;
}
.standard-icon .icon { width: 19px; height: 19px; }
.standard h3 { margin-top: 18px; font-size: 1rem; letter-spacing: -0.015em; }
.standard p { margin-top: 8px; font-size: 0.85rem; line-height: 1.62; color: #adbbd0; }
.standard-ref {
  display: block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.07em;
  color: #8ea8d8;
}

.timeline { margin-top: clamp(46px, 5vw, 66px); padding-top: 38px; border-top: 1px solid rgba(255, 255, 255, 0.14); }
.timeline-title { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: #8ea2bd; }
.timeline-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 26px;
  position: relative;
}
.timeline-list::before {
  content: '';
  position: absolute;
  left: 0; right: 0; top: 9px;
  height: 1px;
  background: rgba(255, 255, 255, 0.14);
}
.timeline-item { position: relative; padding-top: 30px; }
.timeline-dot {
  position: absolute;
  top: 3px; left: 0;
  width: 13px; height: 13px;
  border-radius: 50%;
  background: #334561;
  border: 2px solid var(--ink);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.22);
}
.timeline-item.is-past .timeline-dot { background: #6d7f99; }
.timeline-item.is-next .timeline-dot { background: var(--red); box-shadow: 0 0 0 1px rgba(211, 43, 69, 0.6), 0 0 0 6px rgba(211, 43, 69, 0.16); }
.timeline-date { display: block; font-size: 0.82rem; font-weight: 600; color: #fff; letter-spacing: -0.01em; }
.timeline-copy { display: block; margin-top: 6px; font-size: 0.82rem; line-height: 1.6; color: #a9b8cd; }
.timeline-note { margin-top: 26px; max-width: 76ch; font-size: 0.7rem; line-height: 1.6; color: #7f92ac; }

/* ------------------------------------------------------------------- demo -- */

.section--demo { background: linear-gradient(180deg, #f7fafd 0%, #fdfdff 100%); border-bottom: 1px solid var(--line); }
.demo-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
}
.demo-head .section-head { flex: 1 1 560px; max-width: 660px; }
.demo-actions { display: flex; flex-wrap: wrap; gap: 10px; padding-bottom: 6px; }

.demo-visual {
  position: relative;
  max-width: 1080px;
  margin: clamp(44px, 5vw, 62px) auto 0;
}
.demo-visual .frame { box-shadow: var(--shadow-md); }
.demo-visual figcaption {
  margin-top: 16px;
  text-align: center;
  color: var(--faint);
  font-size: 0.78rem;
}
.live-badge {
  position: absolute;
  top: -15px;
  left: 26px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  color: var(--ink);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.live-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(211, 43, 69, 0.14);
  animation: live-pulse 2.6s var(--ease) infinite;
}
@keyframes live-pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(211, 43, 69, 0.14); }
  50% { box-shadow: 0 0 0 8px rgba(211, 43, 69, 0.04); }
}

.doc-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: clamp(34px, 4vw, 46px);
}
.doc-strip a {
  display: flex;
  flex-direction: column;
  gap: 3px;
  height: 100%;
  padding: 18px 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  color: var(--ink);
  text-decoration: none;
  transition: border-color 200ms var(--ease), box-shadow 200ms var(--ease), transform 200ms var(--ease);
}
.doc-strip a:hover { border-color: var(--line-strong); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.doc-strip-meta { font-size: 0.64rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--faint); }
.doc-strip-title { font-size: 0.9rem; font-weight: 600; letter-spacing: -0.015em; line-height: 1.35; }
.doc-strip .icon { width: 16px; height: 16px; margin-top: 10px; color: var(--blue); transition: transform 200ms var(--ease); }
.doc-strip a:hover .icon { transform: translateX(3px); }
.demo-disclaimer { margin-top: 18px; text-align: center; font-size: 0.7rem; color: var(--faint); letter-spacing: 0.02em; }

/* ------------------------------------------------------------------ embed -- */

.embed-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(34px, 5vw, 68px);
  align-items: center;
}
.embed-copy .section-lead { margin-top: 20px; }
.embed-service { margin-top: 24px; font-size: 0.8rem; line-height: 1.6; color: var(--faint); }
.embed-service code { padding: 2px 5px; border-radius: 4px; background: var(--paper-3); color: var(--ink-2); }

.code-card {
  border-radius: var(--radius-lg);
  background: #0a1729;
  box-shadow: 0 40px 80px -46px rgba(10, 23, 41, 0.8), 0 12px 30px -20px rgba(10, 23, 41, 0.4);
  overflow: hidden;
}
.code-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
}
.code-tabs { display: flex; align-items: center; gap: 2px; }
.code-tabs [role='tab'] {
  padding: 9px 13px;
  border: 0;
  border-radius: 7px 7px 0 0;
  background: transparent;
  color: #8da0ba;
  font-size: 0.74rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 150ms var(--ease), background-color 150ms var(--ease);
}
.code-tabs [role='tab']:hover { color: #d7e2f2; background: rgba(255, 255, 255, 0.05); }
.code-tabs [role='tab'][aria-selected='true'] {
  color: #fff;
  background: rgba(255, 255, 255, 0.07);
  box-shadow: inset 0 -2px 0 var(--red);
}
.code-copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  padding: 6px 10px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.04);
  color: #b9c7da;
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 160ms var(--ease), color 160ms var(--ease);
}
.code-copy:hover { background: rgba(255, 255, 255, 0.1); color: #fff; }
.code-copy .icon { width: 13px; height: 13px; }
.code-copy.is-copied { color: #a8e6c3; border-color: rgba(168, 230, 195, 0.4); }

.code-block {
  margin: 0;
  padding: 24px 24px 26px;
  overflow-x: auto;
  color: #d6e1f0;
  font-family: var(--font-mono);
  font-size: 0.79rem;
  line-height: 1.8;
  tab-size: 2;
}
.code-block[hidden] { display: none; }
.code-block:focus-visible { outline: 2px solid #8fb0ff; outline-offset: -4px; }
.tok-com { color: #7d90aa; }
.tok-tag { color: #ff9aa8; }
.tok-attr { color: #9fc0ff; }
.tok-str { color: #a8e6c3; }
.tok-key { color: #ffd79a; }
.tok-fn { color: #d8c1ff; }
.code-status { min-height: 0; margin: 0; padding: 0 24px; color: #a8e6c3; font-size: 0.72rem; }
.code-status:not(:empty) { padding-bottom: 18px; }

/* --------------------------------------------------------------------- faq -- */

.faq-shell {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}
.faq-shell .section-head { position: sticky; top: calc(var(--header-height) + 28px); }
.faq-list { border-top: 1px solid var(--line-strong); }
.faq { border-bottom: 1px solid var(--line-strong); }
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 21px 2px;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.018em;
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--blue); }
.faq-icon {
  position: relative;
  width: 20px; height: 20px;
  flex: none;
  border-radius: 50%;
  background: var(--paper-3);
  transition: background-color 180ms var(--ease), transform 220ms var(--ease);
}
.faq-icon::before, .faq-icon::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 9px; height: 1.6px;
  border-radius: 2px;
  background: var(--ink-2);
  transform: translate(-50%, -50%);
}
.faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); transition: transform 220ms var(--ease); }
.faq[open] .faq-icon { background: var(--ink); }
.faq[open] .faq-icon::before, .faq[open] .faq-icon::after { background: #fff; }
.faq[open] .faq-icon::after { transform: translate(-50%, -50%) rotate(0deg); }
.faq-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 320px;
  margin-top: 30px;
  padding: 15px 17px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  box-shadow: var(--shadow-xs);
  text-decoration: none;
  transition: box-shadow 200ms var(--ease), border-color 200ms var(--ease);
}
.faq-cta span { display: flex; flex-direction: column; gap: 2px; }
.faq-cta strong { color: var(--ink); font-size: 0.9rem; font-weight: 600; letter-spacing: -0.015em; }
.faq-cta em { color: var(--faint); font-size: 0.74rem; font-style: normal; }
.faq-cta .icon { width: 17px; height: 17px; margin-left: auto; color: var(--blue); }
.faq-cta:hover { border-color: var(--line-strong); box-shadow: var(--shadow-md); }
.faq-cta:hover .icon { transform: translateX(3px); }

.faq-body { padding: 0 48px 24px 2px; }
.faq-body p { font-size: 0.92rem; line-height: 1.72; color: var(--muted); max-width: 66ch; }
.faq-body code { padding: 2px 5px; border-radius: 4px; background: var(--paper-3); color: var(--ink-2); }

/* --------------------------------------------------------------------- cta -- */

.cta {
  position: relative;
  padding-block: clamp(76px, 8vw, 118px);
  background: var(--ink);
  color: #c7d3e3;
  overflow: hidden;
  text-align: center;
}
.cta-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(620px 380px at 50% 0%, rgba(31, 73, 192, 0.42), transparent 66%),
    radial-gradient(520px 340px at 82% 92%, rgba(211, 43, 69, 0.24), transparent 64%);
  pointer-events: none;
}
.cta-inner { position: relative; }
.cta h2 {
  max-width: 20ch;
  margin: 0 auto;
  color: #fff;
  font-size: clamp(2.1rem, 4.6vw, 3.9rem);
  letter-spacing: -0.045em;
  line-height: 1.02;
}
.cta .serif-accent { color: #ffbcc6; }
.cta-lead { margin: 20px auto 0; max-width: 52ch; color: #b4c2d6; font-size: 1.02rem; }
.cta .hero-actions { margin-top: 30px; }

/* ------------------------------------------------------------------ footer -- */

.site-footer { background: #071324; color: #93a6be; padding-top: 64px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.9fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand img { width: 126px; height: auto; margin-bottom: 18px; }
.footer-brand p { max-width: 34ch; font-size: 0.86rem; line-height: 1.66; }
.footer-note { margin-top: 14px; color: #6f8199; font-size: 0.72rem; }
.footer-logo-light { display: none; }
.footer-col h2 {
  margin-bottom: 14px;
  color: #e6edf6;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.footer-col a {
  display: block;
  padding: 4px 0;
  color: #9db0c7;
  font-size: 0.84rem;
  text-decoration: none;
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.7rem;
  color: #6f8199;
}
.footer-fine { color: #7d8fa6; }

/* ----------------------------------------------------------------- reveal -- */

html.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 720ms var(--ease), transform 720ms var(--ease);
  will-change: opacity, transform;
}
html.js .reveal.is-visible { opacity: 1; transform: none; }
html.js .reveal:nth-child(2) { transition-delay: 60ms; }
html.js .reveal:nth-child(3) { transition-delay: 110ms; }
html.js .reveal:nth-child(4) { transition-delay: 160ms; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

/* --------------------------------------------------------------- responsive -- */

@media (max-width: 1080px) {
  .hero-title { max-width: 20ch; }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .step:nth-child(3) { padding-left: 0; border-left: 0; }
  .standards-grid { grid-template-columns: repeat(2, 1fr); }
  .faq-shell { grid-template-columns: 1fr; gap: 32px; }
  .faq-shell .section-head { position: static; }
  .footer-grid { grid-template-columns: 1.6fr 1fr 1fr; row-gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 980px) {
  .gap-grid { grid-template-columns: 1fr; }
  .card--a, .card--b, .card--c, .card--d, .card--e, .card--f { grid-column: span 12; }

  .stat-row { grid-template-columns: 1fr; }
  .stat + .stat { border-left: 0; border-top: 1px solid var(--line); }
  .embed-grid { grid-template-columns: 1fr; }
  .doc-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .section-head, .section-head--wide { max-width: none; }
  .hero-title { font-size: clamp(2.55rem, 10.4vw, 4rem); }
  .hero-lead { font-size: 1rem; }
  .hero-caption { justify-content: flex-start; }
  .frame-bar { height: 42px; gap: 10px; padding: 0 12px; }
  .frame-url { max-width: none; }
  .frame-badge { display: none; }
  .sr-line { grid-template-columns: 84px 1fr; }
  .standards-grid { grid-template-columns: 1fr; }
  .timeline-list { grid-template-columns: 1fr; gap: 8px; }
  .timeline-list::before { left: 6px; top: 4px; bottom: 6px; right: auto; width: 1px; height: auto; }
  .timeline-item { padding: 4px 0 16px 28px; }
  .timeline-dot { top: 8px; left: 0; }
  .demo-head { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .doc-strip { grid-template-columns: 1fr; }
  .card--a .card-copy { padding: 24px 24px 4px; }
  .card--a .card-media { height: 230px; }
  .card { padding: 24px; }
  .phone { width: 180px; height: 270px; }
}

@media (max-width: 620px) {
  .steps { grid-template-columns: 1fr; gap: 0; }
  .step { padding: 26px 0; border-top: 1px solid var(--line); }
  .step:first-child { border-top: 0; padding-top: 0; }
  .step + .step { padding-left: 0; border-left: 0; }
  .step-icon { margin-top: 14px; }
  .stat { padding: 22px; }
  .code-tabs { flex-wrap: wrap; }
  .code-copy { margin-left: auto; }
  .code-block { font-size: 0.72rem; padding: 20px 16px 22px; }
  .faq-body { padding-right: 0; }
  .trust-list { gap: 8px 18px; }
  .trust-list li { font-size: 0.7rem; }
  .hero-note { font-size: 0.72rem; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .cta .hero-actions { flex-direction: column; align-items: stretch; }
  .cta .hero-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .eyebrow { font-size: 0.68rem; }
}