:root {
  --bg: #f7f6f2;
  --surface: #ffffff;
  --ink: #16202a;
  --muted: #5a6572;
  --line: #e2e0d8;
  --accent: #1f5c4a;
  --accent-ink: #ffffff;
  --accent-soft: #e3efe9;
  --warn-soft: #fbf0dc;
  --radius: 14px;
  --max: 1040px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11161b;
    --surface: #182028;
    --ink: #e9ecef;
    --muted: #9aa5b1;
    --line: #2a3440;
    --accent: #5fbf9c;
    --accent-ink: #0d1a15;
    --accent-soft: #1b2e27;
    --warn-soft: #2e2818;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); }
img, svg { max-width: 100%; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 720px; }

/* header */
.top { border-bottom: 1px solid var(--line); background: var(--bg); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--ink); text-decoration: none; }
.brand svg { width: 28px; height: 28px; }
.nav { display: flex; gap: 20px; font-size: 15px; }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--ink); }
@media (max-width: 560px) { .nav .hide-sm { display: none; } }

/* buttons */
.btn {
  display: inline-block; padding: 13px 22px; border-radius: 10px;
  font-weight: 600; text-decoration: none; font-size: 16px;
  border: 1px solid transparent; cursor: pointer;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--surface); }
.btn[aria-disabled="true"] { opacity: .75; cursor: default; }

/* hero */
.hero { padding: 72px 0 56px; }
.hero h1 { font-size: clamp(34px, 5.5vw, 54px); line-height: 1.1; margin: 0 0 18px; letter-spacing: -0.02em; max-width: 16ch; }
.hero p.lead { font-size: 20px; color: var(--muted); max-width: 40em; margin: 0 0 28px; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.hero .note { font-size: 14px; color: var(--muted); margin-top: 14px; }

/* sections */
section { padding: 48px 0; }
section h2 { font-size: clamp(26px, 3.6vw, 34px); line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.01em; }
section .sub { color: var(--muted); margin: 0 0 32px; max-width: 42em; }

.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }

.quote { border-left: 3px solid var(--accent); padding: 4px 0 4px 18px; margin: 0 0 14px; color: var(--muted); font-style: italic; }

/* pricing */
.plans { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); align-items: stretch; }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; display: flex; flex-direction: column; }
.plan.featured { border: 2px solid var(--accent); }
.plan h3 { margin: 0; font-size: 20px; }
.plan .price { font-size: 40px; font-weight: 700; margin: 10px 0 2px; }
.plan .price small { font-size: 16px; font-weight: 500; color: var(--muted); }
.plan .terms { color: var(--muted); font-size: 15px; margin: 0 0 18px; }
.plan ul { list-style: none; padding: 0; margin: 0 0 24px; flex: 1; }
.plan li { padding: 7px 0 7px 28px; position: relative; border-top: 1px solid var(--line); font-size: 16px; }
.plan li:first-child { border-top: 0; }
.plan li::before { content: "✓"; position: absolute; left: 4px; color: var(--accent); font-weight: 700; }
.plan li.soon::before { content: "…"; color: var(--muted); }
.plan li.soon { color: var(--muted); }
.tag { display: inline-block; font-size: 13px; font-weight: 600; background: var(--accent-soft); color: var(--accent); padding: 3px 10px; border-radius: 999px; margin-bottom: 10px; }

/* faq */
details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; margin-bottom: 10px; }
summary { font-weight: 600; cursor: pointer; }
details p { color: var(--muted); margin: 10px 0 0; }

/* legal pages */
.doc { padding: 48px 0 64px; }
.doc h1 { font-size: 36px; margin: 0 0 6px; line-height: 1.2; }
.doc .updated { color: var(--muted); margin: 0 0 32px; font-size: 15px; }
.doc h2 { font-size: 22px; margin: 36px 0 10px; }
.doc p, .doc li { color: var(--ink); }
.doc ul { padding-left: 22px; }
.box { background: var(--accent-soft); border-radius: 12px; padding: 16px 20px; margin: 20px 0; }
.box.warn { background: var(--warn-soft); }

/* forms */
form.inline { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
input[type=email], textarea {
  font: inherit; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); min-width: 0;
}
input[type=email] { flex: 1 1 240px; }
textarea { width: 100%; min-height: 90px; }
.choices { display: grid; gap: 8px; margin: 16px 0; }
.choices label { display: flex; gap: 10px; align-items: flex-start; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; cursor: pointer; }
.msg { margin-top: 12px; font-weight: 600; color: var(--accent); min-height: 1.6em; }

/* footer */
footer { border-top: 1px solid var(--line); padding: 32px 0 48px; color: var(--muted); font-size: 15px; margin-top: 32px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
footer a { color: var(--muted); }