:root {
  --bg: #fbfbfa;
  --surface: #ffffff;
  --ink: #111111;
  --muted: #5f5e5a;
  --line: #eaeaea;
  --green: #15803d;
  --green-soft: #ecf8f0;
  --btn-bg: #14532d;
  --btn-ink: #ffffff;
  --btn-hover: #166534;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1411;
    --surface: #151b17;
    --ink: #f1f3f0;
    --muted: #a3aba5;
    --line: #26302a;
    --green: #4ade80;
    --green-soft: #12251a;
    --btn-bg: #22c55e;
    --btn-ink: #052e16;
    --btn-hover: #4ade80;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0f1411; --surface: #151b17; --ink: #f1f3f0; --muted: #a3aba5; --line: #26302a;
  --green: #4ade80; --green-soft: #12251a; --btn-bg: #22c55e; --btn-ink: #052e16; --btn-hover: #4ade80;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.display { font-family: "Newsreader", Georgia, "Times New Roman", serif; font-weight: 400; letter-spacing: -0.025em; line-height: 1.08; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--green); outline-offset: 3px; border-radius: 4px; }
.wrap { max-width: 64rem; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 42rem; }

header.site {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 14px; padding-bottom: 14px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 22px; }
.brand img { width: 30px; height: 30px; border-radius: 8px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 20px; border-radius: 8px; font-size: 15px; font-weight: 500;
  text-decoration: none; border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: background .15s, border-color .15s;
}
.btn-primary { background: var(--btn-bg); color: var(--btn-ink); }
.btn-primary:hover { background: var(--btn-hover); }
.btn-secondary { background: var(--surface); border-color: var(--line); color: var(--ink); }
.btn-secondary:hover { border-color: var(--muted); }
header.site .btn { padding: 9px 16px; }

.hero { padding: 72px 0 56px; }
.hero h1 { font-size: clamp(2.4rem, 7vw, 4.6rem); margin: 0; max-width: 17ch; }
.hero p.lead { font-size: clamp(1.1rem, 2.4vw, 1.3rem); color: var(--muted); max-width: 38rem; margin: 24px 0 0; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

section.block { padding: 64px 0; border-top: 1px solid var(--line); }
section.block.video { border-top: 0; padding: 8px 0 64px; }
section.block h2 { font-size: clamp(1.8rem, 4.5vw, 2.5rem); margin: 0 0 20px; max-width: 24ch; }
section.block p { color: var(--muted); max-width: 40rem; margin: 0 0 16px; }
section.block p.strong { color: var(--ink); }
section.block p.after { margin-top: 20px; }

.video-frame { border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: #000; aspect-ratio: 16 / 9; }
.video-frame video { width: 100%; height: 100%; display: block; }
.video-note { font-size: 14px; margin-top: 12px; color: var(--muted); }

ol.steps { list-style: none; padding: 0; margin: 32px 0 0; display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
ol.steps li { background: var(--surface); padding: 28px; }
ol.steps .n { font-family: "Newsreader", Georgia, serif; font-size: 2.4rem; color: var(--green); line-height: 1; }
ol.steps h3 { margin: 14px 0 8px; font-size: 1.15rem; font-weight: 600; }
ol.steps p { margin: 0; font-size: 16px; }
@media (min-width: 760px) { ol.steps { grid-template-columns: repeat(3, 1fr); } }

.two { display: grid; gap: 20px; margin-top: 28px; }
@media (min-width: 760px) { .two { grid-template-columns: 1fr 1fr; } }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 26px 28px; }
.panel h3 { margin: 0 0 12px; font-size: 1.1rem; font-weight: 600; }
.panel ul { margin: 0; padding-left: 20px; color: var(--muted); }
.panel li { margin: 4px 0; }
.panel.green { background: var(--green-soft); border-color: transparent; }

.about { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.about img { width: 168px; height: 168px; border-radius: 50%; object-fit: cover; border: 1px solid var(--line); flex: none; }
.about > div { flex: 1 1 18rem; }

.closing { text-align: center; padding: 72px 0; border-top: 1px solid var(--line); }
.closing h2 { font-size: clamp(1.8rem, 4.5vw, 2.6rem); margin: 0 auto 16px; max-width: 22ch; }
.closing p { color: var(--muted); margin: 0 auto 28px; max-width: 32rem; }

.closing p.addr { margin: 20px auto 0; font-size: 15px; }
.closing p.addr strong { color: var(--ink); font-weight: 500; }
.copy { margin-left: 8px; padding: 5px 12px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); color: var(--ink); font: inherit; font-size: 14px; cursor: pointer; }
.copy:hover { border-color: var(--muted); }

footer.site { border-top: 1px solid var(--line); padding: 32px 0 48px; font-size: 14px; color: var(--muted); }
footer.site .wrap { display: flex; flex-direction: column; gap: 10px; }
footer.site nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }

.doc { padding: 56px 0 72px; }
.doc h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 24px; }
.doc h2 { font-size: 1.3rem; margin: 36px 0 8px; font-weight: 600; }
.doc p, .doc li { color: var(--muted); }

@media (max-width: 480px) { .brand { font-size: 18px; gap: 8px; } .brand img { width: 26px; height: 26px; } header.site .btn { padding: 8px 12px; font-size: 14px; } }