/* BNT pool · NTMminer Pools Cobalt theme（token 与 ntmminer.com 同源：近白纸面 + 钴蓝单一强调色 + Space Grotesk / Inter / JetBrains Mono） */
@font-face { font-family: "Space Grotesk"; src: url("/assets/fonts/spacegrotesk-var-latin.woff2") format("woff2"); font-weight: 300 700; font-display: swap; unicode-range: U+0000-00FF, U+2000-206F, U+2190-2193, U+2212; }
@font-face { font-family: "Inter"; src: url("/assets/fonts/inter-var-latin.woff2") format("woff2"); font-weight: 100 900; font-display: swap; unicode-range: U+0000-00FF, U+2000-206F, U+2190-2193, U+2212; }
@font-face { font-family: "JetBrains Mono"; src: url("/assets/fonts/jbmono-var-latin.woff2") format("woff2"); font-weight: 100 800; font-display: swap; unicode-range: U+0000-00FF, U+2000-206F, U+2190-2193, U+2212; }

:root {
  color-scheme: light;
  --bg-canvas: #f8fafc;
  --surface-1: #ffffff;
  --surface-2: #f1f5f9;
  --surface-hover: #eef2f7;
  --line-subtle: #e2e8f0;
  --line-strong: #cbd5e1;
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: #eff4ff;
  --graphite: #182031;
  --graphite-2: #202b40;
  --graphite-line: #31405c;
  --graphite-text: #dbe4f0;
  --graphite-muted: #8fa3c0;
  --success: #15803d;
  --success-soft: #f0fdf4;
  --warning: #b45309;
  --warning-soft: #fffbeb;
  --critical: #be123c;
  --critical-soft: #fff1f2;
  --font-display: "Space Grotesk", "Segoe UI", "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", system-ui, sans-serif;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --gutter: 32px;
  --radius: 10px;
  --shadow-1: 0 1px 2px rgba(15, 23, 42, .06);
  --shadow-2: 0 8px 24px rgba(15, 23, 42, .12);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg-canvas);
  color: var(--text-primary);
  font: 15px/1.6 var(--font-sans);
  font-feature-settings: "tnum" 1, "cv11" 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }
img { max-width: 100%; }
h1, h2, h3 { font-family: var(--font-display); letter-spacing: -.01em; line-height: 1.2; margin: 0; }
h1 { font-size: 30px; font-weight: 650; }
h2 { font-size: 21px; font-weight: 650; }
h3 { font-size: 15px; font-weight: 650; }
p { margin: 0; }
code, .mono { font-family: var(--font-mono); font-size: .92em; }
.muted { color: var(--text-muted); }
.wrap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 var(--gutter); }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--surface-1); padding: 6px 10px; z-index: 50; }
.skip-link:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

/* header */
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.92); backdrop-filter: saturate(1.4) blur(8px); border-bottom: 1px solid var(--line-subtle); }
.header-row { display: flex; align-items: center; gap: 24px; height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text-primary); flex: 0 0 auto; }
.brand:hover { text-decoration: none; color: var(--text-primary); }
.brand-text { font-family: var(--font-display); font-size: 17px; font-weight: 500; white-space: nowrap; }
.brand-text b { font-weight: 700; }
.brand-coin { font: 600 11px/1 var(--font-mono); padding: 4px 7px; border-radius: 6px; background: var(--accent-soft); color: var(--accent); border: 1px solid #c7d7fe; }
.brand-small .brand-text { font-size: 15px; }
.main-nav { display: flex; gap: 4px; flex: 1 1 auto; overflow-x: auto; scrollbar-width: none; }
.main-nav a { color: var(--text-secondary); padding: 7px 12px; border-radius: 8px; font-weight: 550; font-size: 14px; white-space: nowrap; }
.main-nav a:hover { background: var(--surface-hover); text-decoration: none; color: var(--text-primary); }
.main-nav a.active { color: var(--accent); background: var(--accent-soft); }
.header-actions { display: flex; gap: 8px; flex: 0 0 auto; }
.header-actions .nav-toggle { display: none; }

/* buttons & inputs */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 38px; padding: 0 14px; border-radius: 8px; border: 1px solid var(--line-strong); background: var(--surface-1); color: var(--text-primary); font: 600 14px/1 var(--font-sans); cursor: pointer; white-space: nowrap; }
.btn:hover { background: var(--surface-hover); text-decoration: none; color: var(--text-primary); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }
.btn-ghost { border-color: transparent; background: transparent; }
.btn-sm { height: 30px; padding: 0 10px; font-size: 13px; }
.input { width: 100%; height: 42px; padding: 0 12px; border: 1px solid var(--line-strong); border-radius: 8px; background: var(--surface-1); color: var(--text-primary); font: 14px var(--font-mono); }
.input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,.15); }
label.field { display: grid; gap: 6px; font-weight: 600; font-size: 13px; color: var(--text-secondary); }
label.field small { font-weight: 400; color: var(--text-muted); }

/* layout blocks */
main { flex: 1 0 auto; padding-top: 28px; padding-bottom: 56px; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.page-head p { color: var(--text-muted); margin-top: 6px; }
.eyebrow { font: 600 11px/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }
.section { margin-top: 32px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.card { background: var(--surface-1); border: 1px solid var(--line-subtle); border-radius: var(--radius); box-shadow: var(--shadow-1); padding: 18px 20px; min-width: 0; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.bento { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 16px; }

/* status strip */
.status-strip { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; padding: 10px 16px; border: 1px solid var(--line-subtle); border-radius: var(--radius); background: var(--surface-1); font-size: 13px; color: var(--text-secondary); }
.status-strip .item { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--text-muted); flex: 0 0 auto; }
.dot.ok { background: var(--success); box-shadow: 0 0 0 3px rgba(21,128,61,.15); }
.dot.warn { background: var(--warning); box-shadow: 0 0 0 3px rgba(180,83,9,.15); }
.dot.bad { background: var(--critical); box-shadow: 0 0 0 3px rgba(190,18,60,.15); }

/* stat band */
.stat-band { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; border: 1px solid var(--line-subtle); border-radius: var(--radius); background: var(--surface-1); box-shadow: var(--shadow-1); margin-top: 16px; }
.stat { padding: 18px 20px; border-left: 1px solid var(--line-subtle); min-width: 0; }
.stat:first-child { border-left: 0; }
.stat-label { font-size: 12px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .04em; }
.stat-value { font: 650 24px/1.25 var(--font-display); margin-top: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.stat-hero .stat-value { font-size: 34px; color: var(--accent); }
.stat-sub { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 9px 16px; font-size: 14px; }
.kv dt { color: var(--text-muted); }
.kv dd { margin: 0; text-align: right; font-weight: 600; font-family: var(--font-mono); font-size: 13px; overflow-wrap: anywhere; }

/* policy chips */
.policy { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; margin-top: 16px; }
.policy .chip { border: 1px solid var(--line-subtle); background: var(--surface-1); border-radius: var(--radius); padding: 12px 14px; }
.policy .chip b { display: block; font: 650 19px/1.2 var(--font-display); color: var(--text-primary); }
.policy .chip span { font-size: 12px; color: var(--text-muted); }
.policy .chip.accent { border-color: #c7d7fe; background: var(--accent-soft); }
.policy .chip.accent b { color: var(--accent); }

/* command boxes (唯一深色节拍) */
.cmd { background: var(--graphite); border: 1px solid var(--graphite-line); border-radius: var(--radius); color: var(--graphite-text); overflow: hidden; }
.cmd-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 12px; background: var(--graphite-2); border-bottom: 1px solid var(--graphite-line); font-size: 12px; color: var(--graphite-muted); font-weight: 600; }
.cmd pre { margin: 0; padding: 12px 14px; font: 13px/1.6 var(--font-mono); white-space: pre-wrap; word-break: break-all; }
.cmd .copy { height: 26px; padding: 0 10px; border-radius: 6px; border: 1px solid var(--graphite-line); background: transparent; color: var(--graphite-text); font: 600 12px var(--font-sans); cursor: pointer; }
.cmd .copy:hover { background: var(--graphite-line); }
.stratum-big { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.stratum-big code { font-size: 14px; font-weight: 600; color: var(--text-primary); background: var(--surface-2); padding: 8px 12px; border-radius: 8px; border: 1px solid var(--line-subtle); white-space: nowrap; max-width: 100%; min-width: 0; overflow-x: auto; }

/* tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--line-subtle); border-radius: var(--radius); background: var(--surface-1); box-shadow: var(--shadow-1); }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--line-subtle); white-space: nowrap; }
th { font-size: 12px; font-weight: 600; color: var(--text-muted); background: var(--surface-2); text-transform: uppercase; letter-spacing: .03em; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-family: var(--font-mono); }
td.mono { font-family: var(--font-mono); font-size: 12.5px; }
.empty { color: var(--text-muted); text-align: center; padding: 26px 14px; white-space: normal; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; border: 1px solid transparent; }
.badge.ok { color: var(--success); background: var(--success-soft); border-color: #bbf7d0; }
.badge.warn { color: var(--warning); background: var(--warning-soft); border-color: #fde68a; }
.badge.bad { color: var(--critical); background: var(--critical-soft); border-color: #fecdd3; }
.badge.info { color: var(--accent); background: var(--accent-soft); border-color: #c7d7fe; }
.pager { display: flex; align-items: center; justify-content: flex-end; gap: 8px; margin-top: 12px; font-size: 13px; color: var(--text-muted); }

/* chart */
.chart { width: 100%; height: 220px; display: block; }
.chart .grid-line { stroke: var(--line-subtle); stroke-width: 1; }
.chart .area { fill: rgba(37,99,235,.10); }
.chart .line { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; }
.chart text { fill: var(--text-muted); font: 11px var(--font-mono); }
.chart-empty { height: 220px; display: grid; place-items: center; color: var(--text-muted); font-size: 14px; }
.range-tabs { display: inline-flex; border: 1px solid var(--line-subtle); border-radius: 8px; overflow: hidden; }
.range-tabs button { border: 0; background: var(--surface-1); padding: 5px 10px; font: 600 12px var(--font-sans); color: var(--text-secondary); cursor: pointer; }
.range-tabs button.active { background: var(--accent-soft); color: var(--accent); }

/* steps / faq / notices */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.step { position: relative; padding-left: 50px; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 18px; top: 18px; width: 24px; height: 24px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font: 700 13px/24px var(--font-display); text-align: center; }
.step p { color: var(--text-muted); font-size: 13.5px; margin-top: 6px; }
.notice { border: 1px solid #c7d7fe; border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 8px; padding: 12px 14px; font-size: 13.5px; color: var(--text-secondary); }
.notice.warn { border-color: #fde68a; border-left-color: var(--warning); background: var(--warning-soft); }
.notice.bad { border-color: #fecdd3; border-left-color: var(--critical); background: var(--critical-soft); }
.notice b { color: var(--text-primary); }
.faq details { border: 1px solid var(--line-subtle); border-radius: var(--radius); background: var(--surface-1); margin-bottom: 10px; }
.faq summary { cursor: pointer; padding: 14px 18px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::after { content: "+"; color: var(--text-muted); font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details > div { padding: 0 18px 16px; color: var(--text-secondary); font-size: 14px; }
.faq details > div p + p { margin-top: 8px; }
.dl-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.dl-card { display: flex; flex-direction: column; gap: 8px; }
.dl-card .os { font-weight: 650; }
.dl-card code { font-size: 12px; color: var(--text-muted); overflow-wrap: anywhere; }
.form-row { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 14px; }
.search-row { display: flex; gap: 10px; }
.search-row .input { flex: 1 1 auto; }
.addr { font-family: var(--font-mono); font-size: 12.5px; overflow-wrap: anywhere; color: var(--text-secondary); }
.loading { color: var(--text-muted); padding: 40px 0; text-align: center; }
.list-plain { margin: 8px 0 0; padding-left: 18px; color: var(--text-secondary); font-size: 14px; }
.list-plain li + li { margin-top: 4px; }

/* footer & toast */
.site-footer { border-top: 1px solid var(--line-subtle); background: var(--surface-1); padding: 24px 0; font-size: 13px; }
.footer-row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: flex-start; }
.footer-row p { margin-top: 6px; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--graphite); color: #fff; padding: 9px 16px; border-radius: 8px; box-shadow: var(--shadow-2); font-size: 13px; z-index: 60; }

@media (max-width: 1020px) {
  .grid-4, .dl-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .policy { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .bento { grid-template-columns: minmax(0, 1fr); }
  .stat-band { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line-subtle); }
}
@media (max-width: 760px) {
  :root { --gutter: 16px; }
  h1 { font-size: 24px; }
  .header-actions .nav-toggle { display: inline-flex; }
  .main-nav { display: none; position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; background: var(--surface-1); border-bottom: 1px solid var(--line-subtle); padding: 8px var(--gutter) 12px; box-shadow: var(--shadow-2); }
  .main-nav.open { display: flex; }
  .header-row { gap: 12px; }
  .header-actions { margin-left: auto; }
  .grid-2, .grid-3, .steps, .form-row { grid-template-columns: minmax(0, 1fr); }
  .policy { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat-value { font-size: 20px; }
  .stat-hero .stat-value { font-size: 26px; }
  .search-row { flex-direction: column; }
}
@media (max-width: 420px) {
  .dl-grid, .stat-band { grid-template-columns: minmax(0, 1fr); }
  .stat { border-left: 0; }
  .stat:nth-child(n+2) { border-top: 1px solid var(--line-subtle); }
  .brand-text { display: none; }
}

/* utilities (CSP: no inline style attributes) */
.mt-10 { margin-top: 10px; } .mt-12 { margin-top: 12px; } .mt-14 { margin-top: 14px; } .mt-16 { margin-top: 16px; }
.fs-13 { font-size: 13px; } .mw-640 { max-width: 640px; } .my-hint { margin: 6px 0 10px; }