/* walkline.app: one stylesheet for every page. Colours match the app's "new look". */
:root {
  --bg: #F4F6FA;
  --surface: #FFFFFF;
  --surface-2: #EEF2F8;
  --text: #0F172A;
  --muted: #475569;
  --line: #E2E8F0;
  --blue: #1F63C9;
  --blue-2: #2A78E4;
  --navy: #0B1324;
  --amber: #FFB627;
  --amber-ink: #8A4B00;
  --mesh: #5FE3F0;
  --radius: 18px;
  --shadow: 0 4px 18px rgba(15, 23, 42, 0.07);
  --max: 1120px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B1324;
    --surface: #121D33;
    --surface-2: #1A2540;
    --text: #F1F5F9;
    --muted: #A8B4C8;
    --line: #22304D;
    --blue: #6EA8F5;
    --blue-2: #2A78E4;
    --amber-ink: #FFD27A;
    --shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.55;
}
a { color: var(--blue); }
a:hover { text-decoration-thickness: 2px; }
img, svg { max-width: 100%; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* header */
.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: saturate(1.4) blur(12px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 18px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 750; font-size: 20px; letter-spacing: -0.3px; }
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.top nav { display: flex; gap: 6px 18px; flex-wrap: wrap; margin-left: auto; font-size: 15px; }
.top nav a { color: var(--muted); text-decoration: none; padding: 10px 0; }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--text); }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 10px; min-height: 50px; padding: 0 22px; border-radius: 14px; font-weight: 650; font-size: 16px; text-decoration: none; border: 0; }
.btn-primary { background: linear-gradient(180deg, var(--blue-2), #1F63C9); color: #FFFFFF; box-shadow: 0 8px 20px rgba(31, 99, 201, 0.3); }
.btn-ghost { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }
.btn svg { flex: none; }

/* hero */
.hero { padding: 64px 0 40px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 40px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 650; color: var(--amber-ink); background: color-mix(in srgb, var(--amber) 18%, transparent); padding: 6px 12px; border-radius: 999px; }
.hero h1 { font-size: clamp(38px, 6vw, 62px); line-height: 1.05; letter-spacing: -1.4px; margin: 18px 0 16px; }
.hero p.lead { font-size: 20px; color: var(--muted); margin: 0 0 26px; max-width: 34em; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.small { font-size: 14px; color: var(--muted); }
.phone { justify-self: center; width: min(320px, 100%); aspect-ratio: 390 / 800; border-radius: 46px; background: var(--navy); padding: 12px; box-shadow: 0 30px 60px rgba(11, 19, 36, 0.35); }
.phone .screen { width: 100%; height: 100%; border-radius: 36px; overflow: hidden; background: #FFFFFF; }
.phone svg { display: block; width: 100%; height: 100%; }

/* sections */
section { padding: 56px 0; }
.section-head { max-width: 46em; margin-bottom: 28px; }
.section-head h2 { font-size: clamp(28px, 4vw, 38px); letter-spacing: -0.6px; line-height: 1.15; margin: 0 0 10px; }
.section-head p { color: var(--muted); margin: 0; font-size: 18px; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.card { background: var(--surface); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.card h3 { margin: 12px 0 6px; font-size: 19px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.tile { width: 46px; height: 46px; border-radius: 13px; display: flex; align-items: center; justify-content: center; background: color-mix(in srgb, var(--blue) 14%, transparent); color: var(--blue); }
.tile.amber { background: color-mix(in srgb, var(--amber) 22%, transparent); color: var(--amber-ink); }
.tile.mesh { background: color-mix(in srgb, var(--mesh) 22%, transparent); color: #0E7490; }
.soon { display: inline-block; margin-left: 6px; font-size: 12px; font-weight: 700; color: var(--amber-ink); background: color-mix(in srgb, var(--amber) 22%, transparent); padding: 2px 8px; border-radius: 999px; vertical-align: 2px; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; align-items: center; }
.art { background: var(--surface); border-radius: 24px; box-shadow: var(--shadow); overflow: hidden; }
.art svg { display: block; width: 100%; height: auto; }
ul.ticks { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 10px; }
ul.ticks li { display: flex; gap: 10px; align-items: flex-start; }
ul.ticks li::before { content: ""; flex: none; width: 20px; height: 20px; margin-top: 3px; border-radius: 6px; background: var(--blue) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 14px no-repeat; }
.band { background: var(--navy); color: #FFFFFF; border-radius: 28px; padding: 36px; }
.band p { color: #C9D2E3; }
.band a { color: #9CC2FF; }
.formats { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.formats span { font-size: 13px; font-weight: 800; letter-spacing: 0.3px; padding: 6px 10px; border-radius: 9px; background: var(--surface-2); color: var(--text); }

/* text pages */
.doc { max-width: 760px; margin: 0 auto; padding: 48px 20px 72px; }
.doc h1 { font-size: clamp(32px, 5vw, 44px); letter-spacing: -0.8px; line-height: 1.1; margin: 0 0 8px; }
.doc h2 { font-size: 22px; margin: 34px 0 8px; }
.doc .updated { color: var(--muted); font-size: 15px; margin: 0 0 24px; }
.doc table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 12px 0; display: block; overflow-x: auto; }
.doc th, .doc td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc th { font-size: 13px; text-transform: uppercase; letter-spacing: 0.4px; color: var(--muted); }
.note { background: var(--surface); border-radius: 14px; padding: 16px 18px; box-shadow: var(--shadow); }
details { background: var(--surface); border-radius: 14px; padding: 14px 18px; box-shadow: var(--shadow); margin: 10px 0; }
details summary { cursor: pointer; font-weight: 650; }
details p { color: var(--muted); margin: 10px 0 0; }

/* footer */
footer { border-top: 1px solid var(--line); padding: 32px 0 48px; color: var(--muted); font-size: 15px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: flex-start; }
footer .cols { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-left: auto; }
footer a { color: var(--muted); }
footer .fine { flex-basis: 100%; font-size: 13px; }

@media (max-width: 860px) {
  .hero .wrap, .split { grid-template-columns: minmax(0, 1fr); }
  .grid { grid-template-columns: minmax(0, 1fr); }
  .hero { padding-top: 36px; }
  .band { padding: 26px 20px; }
  .top nav { margin-left: 0; width: 100%; }
}