/* ---------- tokens ---------- */
:root {
  --wrap: 1200px;
  --r: 12px;
  --r-lg: 16px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "Noto Sans Mono", "SF Mono", "Cascadia Code", Consolas, "Courier New", monospace;
  --ease: cubic-bezier(.4, 0, .2, 1);
}
:root[data-theme="dark"] {
  --bg: #0A0B10; --bg-alt: #0D0E14; --surface: #12141C;
  --border: #262A36; --border-soft: #1C1F28;
  --text: #F5F5F4; --dim: #9A9AA5; --faint: #6E7079;
  --accent: #FFB454; --accent-ink: #0A0B10; --accent-bg: #1A1408; --accent-bd: #4A3A18;
  --ok: #7FD87A; --warn: #FFB454;
  --code-bg: #0A0B10;
}
:root[data-theme="light"] {
  --bg: #FAFAF9; --bg-alt: #F2F1EE; --surface: #FFFFFF;
  --border: #E3E2DE; --border-soft: #EDECE8;
  --text: #14151A; --dim: #5F5F68; --faint: #8A8A93;
  --accent: #B26A00; --accent-ink: #FFFFFF; --accent-bg: #FFF4E3; --accent-bd: #F0D5A8;
  --ok: #2E7D32; --warn: #B26A00;
  --code-bg: #FBFAF8;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
/* hide all scrollbars */
html { overflow-x: hidden; scrollbar-width: none; }
html::-webkit-scrollbar { display: none; }
body { -ms-overflow-style: none; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background .25s var(--ease), color .25s var(--ease);
}
h1, h2, h3, h4 { margin: 0; line-height: 1.25; letter-spacing: -.01em; font-weight: 700; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
code, pre { font-family: var(--mono); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 99;
  background: var(--accent); color: var(--accent-ink); padding: 10px 18px;
}
.skip:focus { left: 12px; top: 12px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 11px 22px; border-radius: 8px;
  background: var(--accent); color: var(--accent-ink);
  font-size: 15px; font-weight: 600; white-space: nowrap;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .15s var(--ease), filter .15s var(--ease);
}
.btn:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-block { display: flex; width: 100%; padding: 15px; font-size: 16px; border-radius: 9px; }
.btn-ghost {
  background: var(--surface); color: var(--text); border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--dim); filter: none; }

.chip {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 40px; height: 34px; padding: 0 12px;
  background: var(--surface); color: var(--dim);
  border: 1px solid var(--border); border-radius: 7px;
  font-family: var(--font); font-size: 13px; font-weight: 600; cursor: pointer;
  transition: color .15s var(--ease), border-color .15s var(--ease);
}
.chip:hover { color: var(--text); border-color: var(--dim); }
.chip-icon { padding: 0; width: 34px; }

/* ---------- header ---------- */
.hdr {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
}
.hdr-in { display: flex; align-items: center; gap: 32px; height: 62px; }
.logo { font-weight: 700; font-size: 18px; letter-spacing: .12em; }
.nav { display: flex; gap: 26px; margin-right: auto; }
.nav a { font-size: 14px; color: var(--dim); transition: color .15s var(--ease); }
.nav a:hover { color: var(--text); }
.hdr-acts { display: flex; align-items: center; gap: 10px; }

/* ---------- hero ---------- */
.hero { padding: 76px 0 64px; }
.hero-in {
  display: grid; grid-template-columns: minmax(0, 1fr) 480px;
  gap: 56px; align-items: start;
}
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 999px;
  background: var(--accent-bg); border: 1px solid var(--accent-bd);
  color: var(--accent); font-family: var(--mono); font-size: 12.5px;
}
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.hero h1 { margin: 22px 0 18px; font-size: 50px; line-height: 1.16; }
.lede { color: var(--dim); font-size: 16.5px; line-height: 1.75; max-width: 620px; }
.cta-row { display: flex; gap: 12px; margin: 30px 0 22px; flex-wrap: wrap; }
.meta {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  color: var(--faint); font-size: 13px;
}
.meta li { display: flex; align-items: center; gap: 14px; }
.meta li + li::before {
  content: ""; width: 3px; height: 3px; border-radius: 50%;
  background: var(--border); margin-left: -14px;
}
.meta .hl { color: var(--accent); font-family: var(--mono); }

/* ---------- download card ---------- */
.dlcard {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 26px;
  display: flex; flex-direction: column; gap: 16px;
}
.dlcard-top { display: flex; align-items: center; justify-content: space-between; }
.dlcard-top strong { font-size: 19px; letter-spacing: .01em; }
.ver {
  padding: 4px 11px; border-radius: 5px;
  background: var(--accent-bg); border: 1px solid var(--accent-bd);
  color: var(--ok); font-family: var(--mono); font-size: 12px;
}
.dl-size { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.size { font-size: 40px; font-weight: 700; letter-spacing: -.03em; line-height: 1; }
.bytes { color: var(--faint); font-family: var(--mono); font-size: 12.5px; }
.dl-note { color: var(--dim); font-size: 13px; line-height: 1.7; }
.dlcard hr { border: 0; border-top: 1px solid var(--border); margin: 2px 0; }
.kv { display: flex; flex-direction: column; gap: 6px; }
.kv .k { color: var(--faint); font-size: 12px; }
.hash, .url {
  color: var(--dim); font-size: 12px; line-height: 1.6;
  word-break: break-all;
}

/* ---------- stripe ---------- */
.stripe { background: var(--bg-alt); border-block: 1px solid var(--border); }
.stripe-in {
  display: grid; grid-template-columns: repeat(4, 1fr);
  padding-block: 24px;
}
.st {
  display: flex; flex-direction: column; gap: 4px;
  padding-inline: 28px; border-left: 1px solid var(--border);
}
.st:first-child { border-left: 0; padding-left: 0; }
.st-k { color: var(--faint); font-size: 12px; }
.st-v { font-size: 22px; font-weight: 700; letter-spacing: -.02em; }
.st-d { color: var(--dim); font-size: 12.5px; }
.st-d.warn { color: var(--warn); }

/* ---------- sections ---------- */
.sec { padding: 80px 0; }
.sec-alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.eyebrow {
  display: block; margin-bottom: 12px;
  color: var(--accent); font-size: 12.5px; font-weight: 600; letter-spacing: .1em;
}
.sec h2 { font-size: 32px; line-height: 1.3; max-width: 760px; }
.sub { margin-top: 14px; color: var(--dim); font-size: 15.5px; line-height: 1.75; max-width: 820px; }

.grid-3 {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 16px; margin-top: 36px;
}
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r); padding: 26px;
}
.step .num {
  display: block; margin-bottom: 12px;
  color: var(--accent); font-family: var(--mono); font-size: 24px; font-weight: 700;
}
.step h3, .feat h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--dim); font-size: 14px; line-height: 1.75; }
.tag {
  display: inline-block; margin-top: 16px; padding: 4px 10px;
  background: var(--accent-bg); border: 1px solid var(--accent-bd); border-radius: 5px;
  color: var(--accent); font-family: var(--mono); font-size: 11.5px;
}
.feat { display: flex; flex-direction: column; }
.feat .tag { margin-top: auto; align-self: flex-start; }

/* ---------- OTA ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 36px; align-items: start; }
.split-r { display: flex; flex-direction: column; gap: 20px; }
.flag {
  display: inline-block; margin-bottom: 18px;
  color: var(--faint); font-size: 12.5px; font-weight: 600; letter-spacing: .04em;
}
.flag.ok { color: var(--ok); }
.steps { counter-reset: s; }
.steps li {
  position: relative; padding-left: 36px; margin-bottom: 14px;
  color: var(--text); font-size: 14px; line-height: 1.65;
}
.steps li::before {
  counter-increment: s; content: counter(s);
  position: absolute; left: 0; top: 1px;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent-bg); border: 1px solid var(--accent-bd);
  color: var(--accent); font-family: var(--mono); font-size: 11px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
}
.warn-line {
  margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--border);
  color: var(--warn); font-size: 13px; line-height: 1.7;
}
.code-card pre {
  margin: 0; padding: 16px; overflow-x: auto;
  background: var(--code-bg); border: 1px solid var(--border);
  border-radius: 8px; font-size: 12px; line-height: 1.75; color: var(--dim);
}
.c-key { color: var(--faint); }
.c-str { color: var(--text); }
.c-num { color: var(--accent); }
.c-ok { color: var(--ok); }
.c-warn { color: var(--warn); }
.plan { border-style: dashed; }
.plan-list li {
  position: relative; padding-left: 18px; margin-bottom: 12px;
  color: var(--dim); font-size: 13.5px; line-height: 1.7;
}
.plan-list li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--border);
}

/* ---------- changelog ---------- */
.log { margin-top: 32px; border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; }
.log-item {
  display: flex; gap: 26px; padding: 20px 24px;
  background: var(--surface); border-bottom: 1px solid var(--border);
}
.log-item:last-child { border-bottom: 0; background: var(--bg); }
.log-l { flex: 0 0 130px; display: flex; flex-direction: column; gap: 4px; }
.log-v { font-family: var(--mono); font-size: 15px; font-weight: 600; color: var(--dim); }
.log-v.ok { color: var(--ok); }
.log-l time { color: var(--faint); font-size: 12.5px; }
.log-item p { color: var(--dim); font-size: 14px; line-height: 1.75; }
.foot-note { margin-top: 18px; color: var(--faint); font-size: 12.5px; }

/* ---------- about ---------- */
.about h2 { max-width: 700px; }
.about-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 28px; }
.pill {
  padding: 8px 16px; border-radius: 999px;
  background: var(--accent-bg); border: 1px solid var(--accent-bd);
  color: var(--accent); font-family: var(--mono); font-size: 12.5px;
  transition: transform .15s var(--ease);
}
a.pill:hover { transform: translateY(-1px); }
.pill-mute { background: var(--surface); border-color: var(--border); color: var(--faint); }

/* ---------- footer ---------- */
.ftr { border-top: 1px solid var(--border); padding: 48px 0 28px; }
.ftr-in { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.ftr-brand strong { font-size: 17px; letter-spacing: .1em; }
.ftr-brand p { margin: 12px 0; color: var(--faint); font-size: 13px; line-height: 1.7; max-width: 380px; }
.ftr-dom { color: var(--accent); font-family: var(--mono); font-size: 12.5px; }
.ftr-col { display: flex; flex-direction: column; gap: 10px; }
.ftr-col h4 { font-size: 13px; margin-bottom: 2px; }
.ftr-col a, .ftr-col .mute { color: var(--faint); font-size: 13px; }
.ftr-col a:hover { color: var(--text); }
.ftr-bot {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--border-soft);
  color: var(--faint); font-size: 12.5px;
}








/* ---------- changelog toggle ---------- */
.log-toggle {
  display: block; padding: 14px 24px;
  background: var(--surface); border-top: 1px solid var(--border);
  color: var(--accent); font-size: 13px; font-weight: 600;
  text-align: center; cursor: pointer;
  transition: background .15s var(--ease);
  user-select: none;
}
.log-toggle:hover { background: var(--bg-alt); }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .hero-in { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 42px; }
  .stripe-in { grid-template-columns: repeat(2, 1fr); gap: 20px 0; }
  .st:nth-child(3) { border-left: 0; padding-left: 0; }
  .split { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .nav { display: none; }
  .hdr-in { gap: 16px; }
  .grid-3 { grid-template-columns: 1fr; }
  .ftr-in { grid-template-columns: 1fr; gap: 28px; }
  .sec { padding: 56px 0; }
  .sec h2 { font-size: 26px; }
  .hero { padding: 48px 0 40px; }
  .hero h1 { font-size: 34px; }
  .log-item { flex-direction: column; gap: 10px; }
  .log-l { flex: none; flex-direction: row; align-items: baseline; gap: 12px; }
}
@media (max-width: 520px) {
  .stripe-in { grid-template-columns: 1fr; }
  .st { border-left: 0; padding-inline: 0; }
  .size { font-size: 34px; }
  .wrap { padding: 0 18px; }
}


/* narrow screen fixes */
@media (max-width: 520px) {
  .hdr-acts { gap: 6px; }
  .btn-sm { padding: 6px 10px; font-size: 13px; }
  code.hash { word-break: break-all; font-size: 11px; }
  code.url { word-break: break-all; font-size: 11px; }
  .log-item p { font-size: 13px; line-height: 1.8; word-break: break-word; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}