:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #5b6270;
  --line: #e2e5ea;
  --accent: #2aa8e6;
  --accent-ink: #ffffff;
  --code-bg: #eef1f5;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171b;
    --surface: #1e2126;
    --text: #e9ebef;
    --muted: #a3a9b5;
    --line: #2d3138;
    --accent: #45b8f2;
    --accent-ink: #0b1620;
    --code-bg: #262a31;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font: 16px/1.6 "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--accent); }
a:focus-visible, .button:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

header.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }

nav.lang a { color: var(--muted); text-decoration: none; margin-left: 12px; font-size: .95rem; }
nav.lang a[aria-current="page"] { color: var(--text); font-weight: 600; }

.hero { padding: 40px 0 24px; text-align: center; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.1rem); line-height: 1.15; margin: 0 0 14px; letter-spacing: -.02em; }
.hero p.lead { font-size: 1.15rem; color: var(--muted); max-width: 680px; margin: 0 auto 26px; }

.actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.button {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--surface);
}
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.fine { color: var(--muted); font-size: .9rem; margin-top: 14px; }

.shot { margin: 34px auto 0; max-width: 992px; }
.shot img, figure img { width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--line); box-shadow: 0 10px 30px rgba(0,0,0,.18); display: block; }

section { padding: 44px 0 8px; }
section h2 { font-size: 1.6rem; margin: 0 0 18px; letter-spacing: -.01em; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); }

table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .9rem; color: var(--muted); font-weight: 600; }
tr:last-child td { border-bottom: 0; }

.two { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
@media (max-width: 760px) { .two { grid-template-columns: 1fr; } }

figure { margin: 0; }
figcaption { color: var(--muted); font-size: .9rem; margin-top: 8px; }

pre, code { font-family: "Cascadia Code", Consolas, "SFMono-Regular", monospace; font-size: .92rem; }
pre { background: var(--code-bg); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; overflow-x: auto; margin: 8px 0 14px; }
code { background: var(--code-bg); padding: 1px 5px; border-radius: 5px; }
pre code { background: none; padding: 0; }

ul.checks { padding-left: 1.2rem; }
ul.checks li { margin: 6px 0; }

.note { border-left: 4px solid var(--accent); background: var(--surface); padding: 12px 16px; border-radius: 0 10px 10px 0; color: var(--muted); }

footer { border-top: 1px solid var(--line); margin-top: 56px; padding: 24px 0 40px; color: var(--muted); font-size: .9rem; }
footer a { color: var(--muted); }

/* Grid and flex children default to min-width: auto, so one long code line would widen the page on a phone. */
.two > *, .grid > * { min-width: 0; }
.table-wrap { overflow-x: auto; }
img { max-width: 100%; }
@media (max-width: 520px) {
  th, td { padding: 8px 10px; font-size: .92rem; }
  .button { width: 100%; text-align: center; }
}

.notch { display: grid; grid-template-columns: minmax(0, 300px) 1fr; gap: 28px; align-items: center; margin-top: 28px; }
/* The right side of the picture is the screen edge: square, with a bezel, not a rounded card. */
.notch img { width: 100%; height: auto; border-radius: 12px 0 0 12px; border: 1px solid var(--line); border-right: 6px solid #0d0f13; display: block; }
.notch h3 { margin-top: 0; }
kbd { font-family: inherit; font-size: .85em; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; padding: 0 5px; background: var(--surface); }
@media (max-width: 640px) { .notch { grid-template-columns: 1fr; } .notch picture { max-width: 260px; margin: 0 auto; } }