:root { --bg: #0f1719; --card: #162226; --text: #e8efee; --muted: #9db1ae; --line: #24363a; --accent: #5fb3a3; --bronze: #d59a68; }
@media (prefers-color-scheme: light) { :root { --bg: #f4f6f6; --card: #ffffff; --text: #16201f; --muted: #5b6b69; --line: #dfe6e5; --accent: #2a7f72; --bronze: #a8683f; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 24px 16px 64px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
header img { width: 44px; height: 44px; }
header b { font-size: 20px; }
nav { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 20px; }
nav a, .lang button { color: var(--accent); text-decoration: none; border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; font-size: 14px; background: none; cursor: pointer; }
nav a.on, .lang button.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.lang { display: flex; gap: 6px; margin-left: auto; }
h1 { font-size: 28px; line-height: 1.25; margin: 8px 0 4px; }
h2 { font-size: 19px; margin: 28px 0 8px; color: var(--bronze); }
.muted { color: var(--muted); font-size: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px; margin: 16px 0; }
ul { padding-left: 20px; }
li { margin: 4px 0; }
a { color: var(--accent); }
section[hidden] { display: none; }
form { display: grid; gap: 10px; }
label { font-size: 14px; color: var(--muted); }
input, textarea { width: 100%; font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
textarea { min-height: 120px; resize: vertical; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
button.send { font: inherit; font-weight: 600; color: #fff; background: var(--accent); border: 0; border-radius: 10px; padding: 12px; cursor: pointer; }
button.send:disabled { opacity: .6; cursor: default; }
.note { font-size: 14px; }
.ok { color: var(--accent); }
.err { color: #e5675c; }