:root {
  --bg: #f6f7f4;
  --surface: #ffffff;
  --surface-2: #eef1ec;
  --text: #1c2420;
  --muted: #5a665f;
  --border: #d8ded6;
  --accent: #1f6f5c;
  --accent-text: #ffffff;
  --accent-soft: #dcefe7;
  --ok: #2e7d32;
  --ok-soft: #e3f2e4;
  --warn: #9a6400;
  --warn-soft: #fbefd6;
  --bad: #b3261e;
  --bad-soft: #fbe3e1;
  --code-bg: #eef1ec;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(0,0,0,.05), 0 4px 16px rgba(0,0,0,.05);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111614;
    --surface: #1a201d;
    --surface-2: #222a26;
    --text: #e6ece8;
    --muted: #9aa8a0;
    --border: #2f3934;
    --accent: #4fbf9f;
    --accent-text: #0d1512;
    --accent-soft: #1d3a31;
    --ok: #7bd389;
    --ok-soft: #1c3321;
    --warn: #f0c060;
    --warn-soft: #3a2f17;
    --bad: #ff8a80;
    --bad-soft: #3d1c1a;
    --code-bg: #222a26;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
code { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: .9em; background: var(--code-bg); padding: .1em .35em; border-radius: 4px; overflow-wrap: anywhere; }
.wrap { max-width: 920px; margin: 0 auto; padding: 0 16px; }

.top { background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; }
.top-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.1rem; }
nav { display: flex; gap: 6px 18px; flex-wrap: wrap; align-items: center; }
nav a { color: var(--muted); text-decoration: none; font-weight: 500; }
nav a:hover { color: var(--text); }

.lang-select {
  font: inherit;
  font-size: .88rem;
  font-weight: 500;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 4px 10px;
  cursor: pointer;
  outline: none;
  transition: border-color .15s;
}
.lang-select:hover, .lang-select:focus {
  border-color: var(--accent);
}

.hero { padding-top: 48px; padding-bottom: 24px; }
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.15; margin: 0 0 12px; letter-spacing: -.01em; }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 680px; margin: 0; }
.status-line { font-size: .92rem; color: var(--muted); margin-top: 14px; }
.status-line .dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-inline-end: 6px; vertical-align: middle; }

section { margin-bottom: 48px; }
h2 { font-size: 1.5rem; margin: 0 0 16px; }

.tabs { display: flex; gap: 4px; background: var(--surface-2); padding: 4px; border-radius: 10px; width: fit-content; max-width: 100%; margin-bottom: 16px; }
.tab { border: 0; background: transparent; color: var(--muted); font: inherit; font-weight: 600; padding: 8px 18px; border-radius: 7px; cursor: pointer; }
.tab.active { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }

.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.drop {
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 4px;
  border: 2px dashed var(--border); border-radius: var(--radius); padding: 36px 16px; cursor: pointer;
  background: var(--surface-2); transition: border-color .15s, background .15s;
}
.drop:hover, .drop.over { border-color: var(--accent); background: var(--accent-soft); }
.drop:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }
.drop-icon { font-size: 1.6rem; color: var(--accent); }
.drop-title { font-weight: 600; font-size: 1.05rem; }
.drop-sub { color: var(--muted); font-size: .9rem; }
.drop-file { margin-top: 8px; font-weight: 600; color: var(--accent); overflow-wrap: anywhere; }

.notice { background: var(--warn-soft); color: var(--text); border-inline-start: 4px solid var(--warn); border-radius: 8px; padding: 12px 14px; margin-bottom: 16px; font-size: .93rem; }
.notice strong { display: block; color: var(--warn); margin-bottom: 4px; }
.options { margin: 16px 0; }
.download { display: flex; gap: 18px; align-items: flex-start; background: var(--surface-2); border-radius: var(--radius); padding: 20px; }
.download img { flex: none; border-radius: 12px; }
.download h3 { margin: 0 0 6px; font-size: 1.2rem; }
.download p { margin: 0 0 14px; color: var(--muted); }
.download .small-print { font-size: .85rem; margin: 10px 0 0; }
.download a.go, .download a.ghost { margin: 4px 0; margin-inline-end: 8px; }
.steps { margin-top: 18px; }
.mod-list { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 10px; }
.mod-list .mod { display: flex; gap: 16px; align-items: center; justify-content: space-between; flex-wrap: wrap;
  background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.mod-list .mod > div:first-child { flex: 1 1 320px; min-width: 0; }
.mod-list .mod p { margin: 4px 0 0; color: var(--muted); }
.mod-list .mod .ver { color: var(--muted); font-size: .9rem; }
.mod-list .mod code { overflow-wrap: anywhere; }
.mod-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.steps h4 { margin: 0 0 8px; }
.steps ol { padding-inline-start: 20px; margin: 0 0 12px; display: grid; gap: 8px; font-size: .95rem; }
@media (max-width: 560px) { .download { flex-direction: column; } }
.hint { color: var(--muted); font-size: .93rem; margin: 0 0 12px; }
.verify { margin-top: 6px; font-size: .95rem; }
.verify > p { margin: 10px 0; }
.verify ol { padding-inline-start: 20px; margin: 0 0 12px; display: grid; gap: 10px; }
.verify pre { margin: 6px 0; padding: 8px 10px; }
.verify pre code { background: none; padding: 0; }
.verify-live { display: block; margin-top: 6px; }
.verify-hash { display: inline-block; margin-top: 4px; word-break: break-all; }
.check { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; font-weight: 500; }
.check input { width: 18px; height: 18px; accent-color: var(--accent); }
.author-row { margin-top: 12px; display: grid; gap: 6px; }
.author-row label { font-size: .9rem; color: var(--muted); }
input[type="text"] {
  font: inherit; padding: 9px 12px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); max-width: 360px; width: 100%;
}
input[type="text"]:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.go {
  display: inline-block; border: 0; background: var(--accent); color: var(--accent-text); font: inherit; font-weight: 700;
  padding: 11px 22px; border-radius: 9px; cursor: pointer; text-decoration: none;
}
.go:disabled { opacity: .45; cursor: not-allowed; }
.go:not(:disabled):hover { filter: brightness(1.08); }
.ghost { border: 1px solid var(--border); background: transparent; color: var(--text); font: inherit; font-weight: 600; padding: 10px 18px; border-radius: 9px; cursor: pointer; }
.small { padding: 9px 16px; font-size: .95rem; }

.working { display: flex; gap: 16px; align-items: center; margin-top: 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; }
.working p { margin: 2px 0 0; color: var(--muted); font-size: .93rem; }
.spinner { width: 28px; height: 28px; border-radius: 50%; border: 3px solid var(--accent-soft); border-top-color: var(--accent); animation: spin .8s linear infinite; flex: none; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 3s; } }

.result { margin-top: 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.result-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.result-head h2 { margin: 0; font-size: 1.25rem; overflow-wrap: anywhere; }
.badge { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; padding: 3px 9px; border-radius: 999px; }
.badge.ok { background: var(--ok-soft); color: var(--ok); }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.bad { background: var(--bad-soft); color: var(--bad); }
.summary { color: var(--muted); margin: 10px 0 14px; overflow-wrap: anywhere; }
.result-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.next { background: var(--accent-soft); border-radius: 10px; padding: 12px 14px; margin-bottom: 14px; font-size: .95rem; }
.next p { margin: 0 0 6px; }
.next p:last-child { margin: 0; }
details { border-top: 1px solid var(--border); padding: 10px 0; }
details > summary { cursor: pointer; font-weight: 600; }
pre { background: var(--code-bg); padding: 12px; border-radius: 8px; overflow: auto; max-height: 420px; font-size: .82rem; line-height: 1.45; white-space: pre-wrap; overflow-wrap: anywhere; }

.md { font-size: .95rem; overflow-wrap: anywhere; }
.md h1 { font-size: 1.3rem; margin: 16px 0 8px; }
.md h2 { font-size: 1.15rem; margin: 16px 0 8px; }
.md h3, .md h4 { font-size: 1rem; margin: 14px 0 6px; }
.md table { border-collapse: collapse; display: block; overflow-x: auto; max-width: 100%; font-size: .88rem; }
.md th, .md td { border: 1px solid var(--border); padding: 4px 8px; text-align: start; vertical-align: top; }
.md th { background: var(--surface-2); }
.md pre { max-height: 300px; }
.md pre code { background: none; padding: 0; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow); }
.card h3 { margin: 0 0 10px; font-size: 1.08rem; }
.card ol { padding-inline-start: 20px; margin: 0; display: grid; gap: 8px; font-size: .95rem; }
.more { color: var(--muted); margin-top: 16px; }

.faq { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; margin-bottom: 10px; }
.faq p { margin: 10px 0 2px; color: var(--muted); }

.support-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; }
.wallet { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center; box-shadow: var(--shadow); }
.wallet h3 { margin: 0; font-size: 1.05rem; }
.wallet .networks { margin: -4px 0 0; color: var(--muted); font-size: .85rem; }
.wallet code { word-break: break-all; font-size: .8rem; background: var(--code-bg); padding: 6px 8px; border-radius: 6px; max-width: 100%; }
.qr-box img, .qr-box canvas { display: block; background: #fff; padding: 10px; border-radius: 8px; width: 180px; height: 180px; box-sizing: content-box; }
.support-warning { margin-top: 14px; }
.donate-links { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.terms { padding-top: 32px; padding-bottom: 32px; max-width: 760px; }
.terms h2 { font-size: 1.15rem; margin: 28px 0 8px; }
.terms ul { padding-inline-start: 20px; }
.terms li { margin-bottom: 6px; }
.agree { font-size: .88rem; color: var(--muted); margin: 10px 0 0; }
.foot-links { display: flex; gap: 18px; flex-wrap: wrap; }
a.ghost { text-decoration: none; display: inline-block; }
.foot { color: var(--muted); font-size: .88rem; border-top: 1px solid var(--border); padding-top: 18px; padding-bottom: 32px; }

@media (max-width: 560px) {
  nav { gap: 12px; font-size: .92rem; }
  .panel, .result { padding: 16px; }
  .tab { padding: 8px 12px; }
}
.guide { margin-top: 22px; padding-top: 6px; border-top: 1px solid var(--border); }
.guide h1 { font-size: 1.45rem; }
.guide pre { max-height: none; }