:root {
  color-scheme: dark;
  --bg: #111212;
  --surface: rgba(27, 30, 30, .84);
  --text: #f1f5f4;
  --muted: #a5aeac;
  --line: rgba(220, 240, 236, .15);
  --accent: #71e5d0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(90deg, rgba(17,18,18,.98) 0%, rgba(17,18,18,.93) 55%, rgba(17,18,18,.76) 100%),
    url("/assets/fluxclip-moon-bg.svg?v=20260626-1") 78% -110px / 1040px auto no-repeat,
    var(--bg);
}
a { color: inherit; }
.shell { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }
.topbar {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 850; letter-spacing: -.02em; }
.brand img { width: 36px; height: 36px; border-radius: 11px; }
.home-link { color: var(--muted); text-decoration: none; font-size: 14px; }
.home-link:hover { color: var(--text); }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 72px;
  align-items: end;
  min-height: 420px;
  padding: 76px 0 58px;
  border-bottom: 1px solid var(--line);
}
.breadcrumb { margin: 0 0 20px; color: var(--accent); font-size: 13px; font-weight: 800; letter-spacing: .08em; }
h1 { max-width: 760px; margin: 0; font-size: clamp(46px, 6vw, 68px); line-height: 1.03; letter-spacing: -.055em; }
.lead { max-width: 670px; margin: 22px 0 0; color: var(--muted); font-size: 18px; line-height: 1.75; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 28px; }
.primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  color: #07110f;
  background: var(--accent);
  text-decoration: none;
  font-weight: 850;
  white-space: nowrap;
}
.primary:active { transform: translateY(1px); }
.secondary { color: var(--muted); font-size: 14px; text-underline-offset: 4px; }
.facts { border-top: 2px solid var(--accent); background: var(--surface); }
.facts h2 { margin: 0; padding: 18px 20px; border-bottom: 1px solid var(--line); font-size: 16px; }
.fact { display: grid; grid-template-columns: 86px 1fr; gap: 14px; padding: 16px 20px; border-bottom: 1px solid var(--line); }
.fact:last-child { border-bottom: 0; }
.fact span { color: var(--muted); font-size: 13px; }
.fact strong { font-size: 14px; line-height: 1.5; }
.content { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 76px; padding: 54px 0 80px; }
article { min-width: 0; }
.answer { margin-bottom: 50px; scroll-margin-top: 28px; }
h2 { margin: 0 0 14px; font-size: 30px; letter-spacing: -.035em; }
p { margin: 0 0 14px; color: var(--muted); line-height: 1.8; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.link-types { margin-top: 22px; border-top: 1px solid var(--line); }
.link-row { display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 16px 0; border-bottom: 1px solid var(--line); }
.link-row b { color: var(--accent); }
.link-row code { color: #cbd3d1; font-size: 13px; overflow-wrap: anywhere; }
.link-row small { color: var(--muted); }
.steps { counter-reset: step; margin-top: 18px; }
.step { position: relative; padding: 18px 0 18px 54px; border-top: 1px solid var(--line); }
.step:last-child { border-bottom: 1px solid var(--line); }
.step::before { counter-increment: step; content: "0" counter(step); position: absolute; left: 0; top: 20px; color: var(--accent); font-weight: 850; }
.step strong { display: block; margin-bottom: 4px; }
.step p { margin: 0; font-size: 14px; }
.plain-list { margin: 18px 0 0; padding-left: 1.25em; color: var(--muted); }
.plain-list li + li { margin-top: 9px; }
.faq { border-top: 1px solid var(--line); }
details { padding: 17px 0; border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 780; }
details p { margin: 10px 0 0; font-size: 14px; }
aside { align-self: start; position: sticky; top: 24px; }
.side-note { padding: 20px; border: 1px solid var(--line); background: rgba(255,255,255,.035); }
.side-note strong { display: block; margin-bottom: 8px; }
.side-note p { margin: 0; font-size: 14px; }
.side-links { display: grid; gap: 12px; margin-top: 22px; }
.side-links a { color: var(--muted); font-size: 14px; text-decoration: none; }
.side-links a:hover { color: var(--accent); }
footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px 24px; padding: 24px 0 32px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; }
.footer-links a { text-underline-offset: 3px; }

@media (max-width: 820px) {
  .shell { width: min(100% - 28px, 1120px); }
  .hero, .content { grid-template-columns: 1fr; gap: 30px; }
  .hero { min-height: auto; padding: 54px 0 36px; }
  h1 { font-size: clamp(40px, 12vw, 56px); }
  .lead { font-size: 17px; }
  .facts { max-width: 520px; }
  aside { position: static; }
}

@media (max-width: 520px) {
  .topbar { height: 64px; }
  .home-link { font-size: 13px; }
  .hero { padding-top: 42px; }
  .link-row { grid-template-columns: 28px minmax(0, 1fr); }
  .link-row small { grid-column: 2; }
}