/* FearMiner site styles. Dark-first, light via prefers-color-scheme or data-theme. No framework. */

@font-face { font-family: "Inter"; src: url("fonts/Inter-400-700.woff2") format("woff2"); font-weight: 400 700; font-style: normal; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("fonts/JBMono-Regular-Subset.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("fonts/JBMono-Medium-Subset.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("fonts/JBMono-Bold-Subset.woff2") format("woff2"); font-weight: 700; font-display: swap; }
@font-face { font-family: "Plex Serif Display"; src: url("fonts/PlexSerif-MediumItalic-latin.woff2") format("woff2"); font-weight: 500; font-style: italic; font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Plex Serif Display"; src: url("fonts/PlexSerif-MediumItalic-cyrillic.woff2") format("woff2"); font-weight: 500; font-style: italic; font-display: swap;
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }

/* ---------- tokens ---------- */
:root {
  --bg: #0e1116; --bg-2: #151a21; --bg-3: #1b212a;
  --fg: #e8ebe9; --fg-2: #9aa3ad; --line: #262d36; --line-2: #313945;
  --accent: #5ec8f2; --accent-fg: #0b1016; --accent-dim: rgba(94, 200, 242, .12);
  --ok: #3fb950; --warn: #d29922; --err: #f85149; --info: #8b949e;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --serif: "Plex Serif Display", "IBM Plex Serif", Georgia, "Times New Roman", serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --t-hero: clamp(2.5rem, 6vw, 4.5rem);
  --t-h2: clamp(1.75rem, 3.2vw, 2.5rem);
  --wrap: 1160px; --gutter: 24px; --radius: 10px;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f7f8f7; --bg-2: #ffffff; --bg-3: #eef1f2;
    --fg: #15191e; --fg-2: #5b6570; --line: #d9dde1; --line-2: #c9cfd5;
    --accent: #0a6e9c; --accent-fg: #ffffff; --accent-dim: rgba(10, 110, 156, .10);
    --ok: #1a7f37; --warn: #9a6700; --err: #cf222e; --info: #57606a;
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #f7f8f7; --bg-2: #ffffff; --bg-3: #eef1f2;
  --fg: #15191e; --fg-2: #5b6570; --line: #d9dde1; --line-2: #c9cfd5;
  --accent: #0a6e9c; --accent-fg: #ffffff; --accent-dim: rgba(10, 110, 156, .10);
  --ok: #1a7f37; --warn: #9a6700; --err: #cf222e; --info: #57606a;
  color-scheme: light;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }
body { margin: 0; background: var(--bg); color: var(--fg); font: 400 17px/1.6 var(--sans); font-feature-settings: "ss01", "cv11"; }
@media (max-width: 640px) { body { font-size: 16px; } }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
code { font-family: var(--mono); font-size: .92em; background: var(--bg-3); padding: .1em .35em; border-radius: 4px; }
pre { margin: 0; }
h1, h2, h3 { margin: 0; text-wrap: balance; }
h2 { font-size: var(--t-h2); font-weight: 500; line-height: 1.1; letter-spacing: -.015em; margin-bottom: 16px; }
h3 { font-size: 1.25rem; font-weight: 600; line-height: 1.3; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
.mono { font-family: var(--mono); }
.small { font-size: .875rem; }
.dim { color: var(--fg-2); }
.ok { color: var(--ok); } .warn { color: var(--warn); } .err { color: var(--err); } .info { color: var(--info); } .acc { color: var(--accent); font-weight: 700; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: var(--gutter); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: var(--accent-fg); padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav-row { display: flex; align-items: center; gap: 28px; height: 58px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--fg); font-weight: 700; letter-spacing: -.02em; }
.brand:hover { text-decoration: none; }
.mark { color: var(--fg); }
.mark-cut { fill: var(--accent); }
.wordmark { font-weight: 700; font-size: 1.05rem; letter-spacing: -.02em; }
.links { display: flex; gap: 22px; font-size: .95rem; }
.links a { color: var(--fg-2); }
.links a:hover { color: var(--fg); text-decoration: none; }
.nav-tools { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.ghost { color: var(--fg); font-size: .95rem; border: 1px solid var(--line-2); padding: 6px 12px; border-radius: 8px; }
.ghost:hover { text-decoration: none; border-color: var(--fg-2); }
.lang { display: flex; gap: 2px; font-family: var(--mono); font-size: .8rem; border: 1px solid var(--line); border-radius: 8px; padding: 2px; }
.lang a, .lang span { padding: 3px 8px; border-radius: 6px; color: var(--fg-2); }
.lang .on { background: var(--bg-3); color: var(--fg); }
.lang .soon { opacity: .55; cursor: not-allowed; }
.theme { background: none; border: 1px solid var(--line); color: var(--fg-2); width: 34px; height: 34px; border-radius: 8px; display: grid; place-items: center; cursor: pointer; }
.theme:hover { color: var(--fg); border-color: var(--fg-2); }
@media (max-width: 900px) { .links { display: none; } }
@media (max-width: 520px) { .lang { display: none; } .nav-row { gap: 12px; } }

/* ---------- hero ---------- */
.hero { padding-block: clamp(56px, 9vw, 120px) clamp(40px, 6vw, 80px); border-bottom: 1px solid var(--line); background:
  radial-gradient(1200px 500px at 70% -10%, var(--accent-dim), transparent 60%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 48px; align-items: center; }
@media (max-width: 960px) { .hero-grid { grid-template-columns: 1fr; gap: 36px; } }
.pill { display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: .78rem; letter-spacing: .02em; color: var(--fg-2); border: 1px solid var(--line-2); border-radius: 999px; padding: 5px 12px; margin: 0 0 22px; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 22%, transparent); }
.display { font-family: var(--serif); font-style: italic; font-weight: 500; font-size: var(--t-hero); line-height: 1.02; letter-spacing: -.02em; margin-bottom: 22px; }
.lead { font-size: 1.2rem; line-height: 1.55; color: var(--fg-2); max-width: 36em; margin-bottom: 28px; }
.lead strong { color: var(--fg); font-weight: 600; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 18px; border-radius: 9px; border: 1px solid var(--line-2); color: var(--fg); font-weight: 600; font-size: .98rem; transition: border-color .15s ease-out, background-color .15s ease-out; }
.btn:hover { text-decoration: none; border-color: var(--fg-2); }
.btn.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.btn.primary:hover { background: color-mix(in srgb, var(--accent) 88%, var(--fg)); }
.proof { font-size: .8rem; color: var(--fg-2); letter-spacing: .01em; }

/* ---------- terminal ---------- */
.term { margin: 0; background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: 0 1px 0 color-mix(in srgb, var(--fg) 4%, transparent); }
.term-bar { display: flex; align-items: center; gap: 7px; padding: 10px 14px; border-bottom: 1px solid var(--line); background: var(--bg-3); }
.tl { width: 10px; height: 10px; border-radius: 50%; background: var(--line-2); }
.term-title { margin-left: 8px; font-size: .75rem; color: var(--fg-2); }
.term pre { padding: 18px 20px; font-size: .84rem; line-height: 1.6; overflow-x: auto; white-space: pre; }
.term .p { color: var(--fg-2); }
.term .k { color: var(--fg-2); }
.term .v { color: var(--fg); font-weight: 700; }
.term-note { margin: 0; padding: 10px 14px; font-size: .72rem; color: var(--fg-2); border-top: 1px solid var(--line); background: var(--bg-3); }
[data-typed] .line-hidden { visibility: hidden; }
.caret { display: inline-block; width: .6em; height: 1.1em; vertical-align: -.2em; background: var(--fg); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@media (max-width: 640px) { .term pre { font-size: .74rem; padding: 14px; } }

/* ---------- sections ---------- */
.section, .hero { scroll-margin-top: 66px; }
.section { padding-block: clamp(56px, 8vw, 104px); border-bottom: 1px solid var(--line); }
.section.alt { background: color-mix(in srgb, var(--bg-2) 55%, var(--bg)); }
.label { font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); font-weight: 500; margin-bottom: 14px; }
.sub { font-size: 1.15rem; color: var(--fg-2); max-width: 44em; margin: 0 0 36px; }
.hint { font-size: .9rem; color: var(--fg-2); max-width: 60em; margin-top: 18px; }
.narrow { max-width: 820px; }
.two { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 56px; align-items: start; }
@media (max-width: 900px) { .two { grid-template-columns: 1fr; gap: 32px; } }

/* ---------- tabs / code ---------- */
.tablist { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 0; }
.tablist [role="tab"] { background: none; border: 0; border-bottom: 2px solid transparent; color: var(--fg-2); font: 500 .95rem var(--sans); padding: 10px 14px; cursor: pointer; margin-bottom: -1px; }
.tablist [role="tab"][aria-selected="true"] { color: var(--fg); border-bottom-color: var(--accent); }
.panel { padding-top: 18px; }
.code { position: relative; background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); }
.code pre { padding: 18px 20px; font-size: .86rem; line-height: 1.65; overflow-x: auto; }
.copy { position: absolute; top: 10px; right: 10px; background: var(--bg-3); border: 1px solid var(--line-2); color: var(--fg-2); font: 500 .75rem var(--mono); padding: 5px 9px; border-radius: 6px; cursor: pointer; }
.copy:hover { color: var(--fg); }
.copy.done { color: var(--ok); border-color: var(--ok); }
.verify { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 22px; padding: 14px 16px; border: 1px dashed var(--line-2); border-radius: var(--radius); font-size: .82rem; color: var(--fg-2); }
.verify b { color: var(--fg); font-weight: 500; }

/* ---------- cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.card { background: var(--bg); padding: 26px 24px 22px; display: flex; flex-direction: column; gap: 10px; }
.section.alt .card { background: color-mix(in srgb, var(--bg-2) 55%, var(--bg)); }
.card h3 { font-size: 1.1rem; }
.card p { color: var(--fg-2); font-size: .97rem; margin: 0; flex: 1; }
.more { font-size: .8rem; }
@media (max-width: 960px) { .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .cards { grid-template-columns: 1fr; } }

/* ---------- TUI mock ---------- */
.tui-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); font-size: .82rem; }
.box { background: var(--bg-2); padding: 14px 16px; display: flex; flex-direction: column; gap: 6px; }
.box-h { color: var(--fg-2); text-transform: uppercase; letter-spacing: .08em; font-size: .7rem; margin-bottom: 4px; }
.big { font-size: 1.9rem; font-weight: 700; line-height: 1; letter-spacing: -.02em; }
.big small { font-size: .8rem; font-weight: 500; color: var(--fg-2); }
.spark { width: 100%; height: 28px; color: var(--accent); margin: 4px 0; }
.kv { display: flex; justify-content: space-between; gap: 10px; white-space: nowrap; }
.kv span:first-child { color: var(--fg-2); }
@media (max-width: 900px) { .tui-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .tui-grid { grid-template-columns: 1fr; } }

/* ---------- stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-bottom: 28px; }
.stat { background: var(--bg); padding: 24px 22px; }
.stat .n { font-family: var(--mono); font-size: 2.6rem; font-weight: 700; letter-spacing: -.03em; line-height: 1; color: var(--fg); margin-bottom: 12px; }
.stat .n span { font-size: 1.1rem; color: var(--fg-2); font-weight: 500; margin-left: 2px; }
.stat p { margin: 0; font-size: .93rem; color: var(--fg-2); }
@media (max-width: 900px) { .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .stats { grid-template-columns: 1fr; } }
.opp { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.opp li { display: flex; gap: 12px; align-items: baseline; font-size: 1rem; }

/* ---------- ledger ---------- */
.ledger { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; font-size: .84rem; }
.lrow { display: flex; justify-content: space-between; gap: 16px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.lrow:last-child { border-bottom: 0; }
.lrow span:first-child { color: var(--fg-2); }

/* ---------- chains ---------- */
.chains { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.chain { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: var(--bg-2); }
.chain.now { border-color: var(--accent); }
.chain h3 { margin-bottom: 6px; }
.chain .mono { color: var(--accent); font-size: .8rem; margin-bottom: 10px; }
.chain p:last-child { margin: 0; color: var(--fg-2); font-size: .95rem; }
@media (max-width: 800px) { .chains { grid-template-columns: 1fr; } }

/* ---------- faq ---------- */
details { border-top: 1px solid var(--line); padding: 14px 0; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 600; font-size: 1.05rem; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--fg-2); font-family: var(--mono); }
details[open] summary::after { content: "−"; }
details p { margin: 12px 0 0; color: var(--fg-2); }

/* ---------- community ---------- */
.chan { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.chan a { display: flex; flex-direction: column; gap: 4px; padding: 18px 20px; border: 1px solid var(--line); border-radius: var(--radius); color: var(--fg); background: var(--bg-2); }
.chan a:hover { text-decoration: none; border-color: var(--fg-2); }
.chan a b { font-weight: 600; }
.chan a span { font-size: .78rem; color: var(--fg-2); }
@media (max-width: 640px) { .chan { grid-template-columns: 1fr; } }

/* ---------- footer ---------- */
.foot { padding-block: 40px 56px; }
.foot-grid { display: grid; grid-template-columns: 1fr 2fr 1fr; gap: 32px; color: var(--fg-2); }
.foot .wordmark { color: var(--fg); margin-bottom: 4px; }
.foot p { margin: 0 0 6px; }
@media (max-width: 800px) { .foot-grid { grid-template-columns: 1fr; } }

/* ---------- zh-CN ---------- */
html[lang="zh-CN"] body { line-height: 1.75; }
html[lang="ru"] .display { font-size: clamp(2.2rem, 5.2vw, 4rem); }
html[lang="zh-CN"] .display { font-family: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif; font-style: normal; font-weight: 600; letter-spacing: 0; line-height: 1.15; }
html[lang="zh-CN"] h2, html[lang="zh-CN"] h3 { letter-spacing: 0; }
html[lang="zh-CN"] .lead, html[lang="zh-CN"] .sub { line-height: 1.7; }

/* ---------- status bar (in development) ---------- */
.status { background: color-mix(in srgb, var(--warn) 10%, var(--bg)); border-bottom: 1px solid color-mix(in srgb, var(--warn) 35%, var(--line)); font-size: .9rem; }
.status-row { display: flex; align-items: center; gap: 10px; padding-block: 9px; flex-wrap: wrap; }
.status .dot { background: var(--warn); box-shadow: 0 0 0 3px color-mix(in srgb, var(--warn) 22%, transparent); flex: none; }
.status a { margin-left: auto; font-weight: 600; white-space: nowrap; }
.dot.warn { background: var(--warn); box-shadow: 0 0 0 3px color-mix(in srgb, var(--warn) 22%, transparent); }
.dot.err { background: var(--err); box-shadow: 0 0 0 3px color-mix(in srgb, var(--err) 22%, transparent); }
#install .pill { margin: 0 0 22px; }

/* ---------- waitlist ---------- */
.waitlist { background: radial-gradient(900px 400px at 15% 0%, var(--accent-dim), transparent 60%); }
.wl-form { border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-2); padding: 26px 24px; display: flex; flex-direction: column; gap: 12px; }
.wl-form label { font-weight: 600; font-size: .95rem; }
.wl-row { display: flex; gap: 10px; flex-wrap: wrap; }
.wl-row input { flex: 1 1 220px; min-width: 0; font: 400 1rem var(--sans); color: var(--fg); background: var(--bg); border: 1px solid var(--line-2); border-radius: 9px; padding: 12px 14px; }
.wl-row input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.wl-row input:invalid:not(:placeholder-shown) { border-color: var(--err); }
.wl-form .btn { justify-content: center; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.wl-msg { min-height: 1.4em; margin: 0; font-size: .85rem; }
.wl-msg.ok { color: var(--ok); } .wl-msg.err { color: var(--err); }
.wl-form .hint { margin-top: 4px; font-size: .82rem; }