:root {
  --bg: #0d0e1f;
  --panel: #161833;
  --line: #2a2d52;
  --text: #f1eee6;
  --muted: #a9acd0;
  --cream: #f4ead5;
  --coral: #ff7a63;
  --indigo: #6c63ff;
  --navy: #0a0b18;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--coral); }
.wrap { max-width: 920px; margin: 0 auto; padding: 0 16px; }
nav { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; gap: 12px; flex-wrap: wrap; }
nav .brand { font-weight: 800; letter-spacing: -0.02em; color: var(--text); text-decoration: none; display: flex; align-items: center; gap: 8px; }
nav .links { display: flex; gap: 16px; flex-wrap: wrap; font-size: 15px; }
nav .links a { color: var(--muted); text-decoration: none; }
nav .links a:hover { color: var(--text); }
.mark { width: 26px; height: 26px; border-radius: 8px; background: linear-gradient(135deg, var(--cream) 50%, var(--coral) 50%); box-shadow: 0 0 0 2px var(--navy) inset; }
.banner { background: #2a2250; border: 1px solid var(--indigo); color: var(--text); border-radius: 12px; padding: 10px 14px; font-size: 15px; margin: 8px 0 0; }
h1 { font-size: clamp(32px, 7vw, 54px); line-height: 1.08; letter-spacing: -0.03em; margin: 40px 0 14px; }
h2 { font-size: 26px; letter-spacing: -0.02em; margin: 52px 0 12px; }
h3 { font-size: 18px; margin: 0 0 6px; }
p { color: var(--muted); margin: 0 0 14px; }
.lede { font-size: 19px; color: #d6d4e6; max-width: 620px; }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 18px; }
.card p { margin: 0; font-size: 16px; }
.btn { display: inline-block; background: var(--coral); color: var(--navy); font-weight: 700; padding: 13px 20px; border-radius: 12px; text-decoration: none; border: 0; font-size: 17px; }
.btn[disabled], .btn.off { background: #3a3d68; color: #9a9dc4; cursor: not-allowed; }
.drop { border: 2px dashed var(--line); border-radius: 16px; padding: 22px 16px; text-align: center; color: var(--muted); background: #121430; }
.drop strong { display: block; color: var(--text); margin-bottom: 4px; }
.tool { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); margin: 20px 0; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--muted); margin: 14px 0; }
.check input { margin-top: 5px; width: 18px; height: 18px; }
ul.plain { padding-left: 20px; color: var(--muted); }
ul.plain li { margin: 6px 0; }
footer { border-top: 1px solid var(--line); margin-top: 64px; padding: 24px 0 48px; color: #7c7fa8; font-size: 14px; }
footer a { color: var(--muted); }

.prev { display:block; max-width:100%; max-height:260px; margin:12px auto 0; border-radius:12px; }
.drop { cursor:pointer; display:block; }
#status { min-height:1.6em; }