/* 帧衡 Framelux — one stylesheet for every page. */

:root {
  --bg: #0b0d12;
  --bg-2: #10131a;
  --panel: #141822;
  --panel-2: #1a1f2b;
  --line: #232a38;
  --line-2: #2e3647;
  --text: #e8ebf2;
  --text-2: #b6bdcc;
  --muted: #8089a0;
  --brand: #7c6cff;
  --brand-2: #22c7e8;
  --brand-ink: #b3a9ff;
  --ok: #34d399;
  --warn: #fbbf24;
  --bad: #f87171;
  --radius: 12px;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  --mono: "JetBrains Mono", "Cascadia Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  --grad: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--bg); -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; min-height: 100vh;
  background: var(--bg); color: var(--text);
  font: 15.5px/1.75 var(--sans);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
a { color: var(--brand-ink); text-decoration: none; transition: color .15s; }
a:hover { color: #fff; }
:focus-visible { outline: 2px solid var(--brand-2); outline-offset: 2px; border-radius: 4px; }
::selection { background: rgba(124, 108, 255, .35); }
img, svg { display: block; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 28px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
svg.i { width: 20px; height: 20px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

/* ------------------------------------------------------------ header */

.top {
  position: sticky; top: 0; z-index: 30;
  background: rgba(11, 13, 18, .72);
  -webkit-backdrop-filter: saturate(160%) blur(14px); backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.top .wrap { display: flex; align-items: center; gap: 28px; height: 66px; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 17px; letter-spacing: .01em; white-space: nowrap; }
.logo:hover { color: var(--text); }
.logo .mark { width: 30px; height: 30px; border-radius: 8px; background: var(--grad); display: grid; place-items: center; box-shadow: 0 6px 18px rgba(124, 108, 255, .35); }
.logo .mark svg { width: 16px; height: 16px; fill: #fff; stroke: none; }
.logo small { font-weight: 500; font-size: 12px; color: var(--muted); padding-left: 10px; border-left: 1px solid var(--line-2); }
.menu { display: flex; align-items: center; gap: 4px; }
.menu a { padding: 7px 12px; border-radius: 8px; color: var(--text-2); font-size: 14.5px; font-weight: 500; }
.menu a:hover, .menu a[aria-current] { color: var(--text); background: rgba(255, 255, 255, .05); }
.top .actions { margin-left: auto; display: flex; gap: 10px; align-items: center; }
.burger { display: none; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; padding: 0 18px; border-radius: 10px;
  border: 1px solid var(--line-2); background: rgba(255, 255, 255, .03); color: var(--text);
  font: 600 14.5px/1 var(--sans); cursor: pointer; white-space: nowrap;
  transition: background-color .15s, border-color .15s, transform .15s, box-shadow .15s, opacity .15s;
}
.btn:hover { color: #fff; border-color: #3b4558; background: rgba(255, 255, 255, .07); }
.btn:active { transform: translateY(1px); }
.btn.primary { border: 0; background: var(--grad); color: #fff; box-shadow: 0 8px 24px rgba(124, 108, 255, .32), inset 0 1px 0 rgba(255, 255, 255, .25); }
.btn.primary:hover { box-shadow: 0 10px 30px rgba(124, 108, 255, .45), inset 0 1px 0 rgba(255, 255, 255, .25); }
.btn.lg { height: 48px; padding: 0 24px; font-size: 15.5px; border-radius: 12px; }
.btn.block { width: 100%; }
.btn[disabled] { opacity: .6; cursor: progress; }
.btn .spin { width: 16px; height: 16px; border-radius: 50%; border: 2px solid rgba(255, 255, 255, .35); border-top-color: #fff; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ------------------------------------------------------------ hero */

.hero { position: relative; overflow: hidden; padding: 84px 0 72px; }
.hero::before {
  content: ""; position: absolute; inset: -40% -10% auto; height: 900px; pointer-events: none;
  background:
    radial-gradient(600px 340px at 72% 32%, rgba(124, 108, 255, .28), transparent 70%),
    radial-gradient(520px 300px at 18% 18%, rgba(34, 199, 232, .16), transparent 70%);
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 20%, #000 20%, transparent 70%); mask-image: radial-gradient(ellipse at 50% 20%, #000 20%, transparent 70%);
}
.hero .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 56px; align-items: center; }
.pill {
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 22px;
  padding: 5px 14px 5px 6px; border-radius: 999px;
  background: rgba(255, 255, 255, .04); border: 1px solid var(--line-2);
  font-size: 13px; color: var(--text-2);
}
.pill b { padding: 2px 9px; border-radius: 999px; background: rgba(124, 108, 255, .2); color: var(--brand-ink); font-size: 12px; font-weight: 600; }
.hero h1 { margin: 0 0 20px; font-size: 50px; line-height: 1.16; letter-spacing: -.025em; font-weight: 800; }
.hero h1 .g { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .sub { margin: 0 0 32px; max-width: 32em; font-size: 17.5px; color: var(--text-2); }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.trust { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 8px 20px; color: var(--muted); font-size: 13.5px; }
.trust span { display: inline-flex; align-items: center; gap: 7px; }
.trust svg.i { width: 16px; height: 16px; color: var(--ok); }

/* render queue mock */
.console {
  border-radius: 16px; overflow: hidden;
  background: linear-gradient(180deg, rgba(26, 31, 43, .92), rgba(20, 24, 34, .96));
  border: 1px solid var(--line-2);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .55), 0 0 0 1px rgba(255, 255, 255, .02) inset;
}
.console-bar { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.console-bar .dots { display: flex; gap: 6px; }
.console-bar .dots i { width: 10px; height: 10px; border-radius: 50%; background: #2c3342; }
.console-bar .title { color: var(--text-2); font-weight: 600; }
.console-bar .nodes { margin-left: auto; display: inline-flex; align-items: center; gap: 7px; }
.live { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px rgba(52, 211, 153, .18); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 6px rgba(52, 211, 153, .05); } }
.jobs { list-style: none; margin: 0; padding: 8px; }
.job { display: grid; grid-template-columns: 40px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 12px 10px; border-radius: 10px; }
.job + .job { border-top: 1px solid rgba(255, 255, 255, .04); }
.job .thumb { width: 40px; height: 40px; border-radius: 8px; display: grid; place-items: center; color: #fff; background: linear-gradient(135deg, #3a3170, #1c4f63); }
.job .thumb svg.i { width: 18px; height: 18px; }
.job .name { font-size: 14px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.job .meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; font-size: 12px; color: var(--muted); }
.chip { padding: 1px 7px; border-radius: 6px; border: 1px solid var(--line-2); background: rgba(255, 255, 255, .03); font: 500 11.5px/1.6 var(--mono); color: var(--text-2); }
.job .state { text-align: right; font-size: 12.5px; color: var(--text-2); min-width: 92px; }
.bar { height: 5px; margin-top: 7px; border-radius: 3px; background: rgba(255, 255, 255, .06); overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: inherit; background: var(--grad); }
.bar i.run { animation: crawl 14s ease-in-out infinite alternate; }
@keyframes crawl { from { filter: brightness(1); } to { filter: brightness(1.35); } }
.state.done { color: var(--ok); }
.state.wait { color: var(--muted); }
.console-foot { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.console-foot div { padding: 12px 16px; font-size: 12px; color: var(--muted); }
.console-foot div + div { border-left: 1px solid var(--line); }
.console-foot b { display: block; font-size: 16px; color: var(--text); font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------ sections */

.specs { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.specs .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.specs div { padding: 30px 8px; text-align: center; }
.specs div + div { border-left: 1px solid var(--line); }
.specs b { display: block; font-size: 32px; line-height: 1.2; font-weight: 800; letter-spacing: -.02em; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.specs span { font-size: 13.5px; color: var(--muted); }

section.block { padding: 96px 0 0; }
.eyebrow { margin: 0 0 10px; font-size: 13px; font-weight: 600; letter-spacing: .12em; color: var(--brand-ink); text-transform: uppercase; }
.block h2 { margin: 0 0 14px; font-size: 34px; line-height: 1.25; letter-spacing: -.02em; font-weight: 800; }
.block .lead { margin: 0 0 40px; max-width: 40em; color: var(--text-2); font-size: 16.5px; }
.center { text-align: center; }
.center .lead { margin-left: auto; margin-right: auto; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  position: relative; padding: 26px 24px 24px; border-radius: var(--radius);
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.card:hover { border-color: #3a3f68; transform: translateY(-3px); box-shadow: 0 18px 40px rgba(0, 0, 0, .35); }
.card .ico { width: 42px; height: 42px; margin-bottom: 16px; border-radius: 11px; display: grid; place-items: center; color: #fff; background: rgba(124, 108, 255, .16); border: 1px solid rgba(124, 108, 255, .3); }
.card .ico svg.i { color: var(--brand-ink); }
.card h3 { margin: 0 0 6px; font-size: 17px; font-weight: 700; }
.card p { margin: 0; font-size: 14.5px; color: var(--text-2); }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.step { position: relative; padding: 24px 22px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--panel); }
.step::before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 12px; font: 700 13px var(--mono); color: var(--brand-2); }
.step h3 { margin: 0 0 6px; font-size: 16.5px; }
.step p { margin: 0; font-size: 14px; color: var(--text-2); }

.codecs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.codec-box { padding: 24px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--panel); }
.codec-box h3 { margin: 0 0 14px; font-size: 15px; color: var(--text-2); font-weight: 600; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { padding: 6px 12px; border-radius: 8px; border: 1px solid var(--line-2); background: rgba(255, 255, 255, .03); font-size: 13.5px; font-weight: 500; }
.tag em { font-style: normal; color: var(--muted); font-size: 12px; margin-left: 4px; }

.beta {
  margin-top: 96px; padding: 44px 48px; border-radius: 18px;
  display: flex; align-items: center; gap: 32px; justify-content: space-between; flex-wrap: wrap;
  background: radial-gradient(500px 200px at 90% 0%, rgba(34, 199, 232, .18), transparent 70%), radial-gradient(500px 220px at 0% 100%, rgba(124, 108, 255, .25), transparent 70%), var(--panel);
  border: 1px solid #2f3557;
}
.beta h2 { margin: 0 0 8px; font-size: 26px; font-weight: 800; letter-spacing: -.01em; }
.beta p { margin: 0; color: var(--text-2); max-width: 36em; }

/* ------------------------------------------------------------ doc pages */

.page-head { padding: 64px 0 36px; border-bottom: 1px solid var(--line); background: radial-gradient(700px 260px at 80% 0%, rgba(124, 108, 255, .16), transparent 70%); }
.page-head h1 { margin: 0 0 10px; font-size: 38px; letter-spacing: -.02em; font-weight: 800; }
.page-head p { margin: 0; color: var(--text-2); max-width: 46em; font-size: 16.5px; }
.doc { padding: 48px 0 0; display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 48px; }
.doc nav { position: sticky; top: 90px; align-self: start; font-size: 14px; }
.doc nav p { margin: 0 0 8px; font-size: 12.5px; font-weight: 600; color: var(--muted); letter-spacing: .06em; }
.doc nav a { display: block; padding: 6px 12px; border-left: 2px solid var(--line); color: var(--text-2); }
.doc nav a:hover { color: var(--text); border-left-color: var(--brand); }
.doc h2 { margin: 0 0 14px; padding-top: 8px; font-size: 23px; font-weight: 750; scroll-margin-top: 90px; }
.doc h2:not(:first-child) { margin-top: 52px; }
.doc p, .doc li { color: var(--text-2); }
.doc p { margin: 0 0 14px; }
.table { overflow-x: auto; margin: 0 0 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
th, td { padding: 12px 16px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
thead th { font-size: 12.5px; letter-spacing: .04em; color: var(--muted); font-weight: 600; background: var(--panel-2); white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
td:first-child { color: var(--text); font-weight: 600; white-space: nowrap; }
td code, p code, li code { font: 12.5px var(--mono); padding: 1px 6px; border-radius: 5px; background: rgba(255, 255, 255, .05); border: 1px solid var(--line-2); color: var(--text); }
.note { margin: 0 0 18px; padding: 14px 18px; border-radius: 10px; border: 1px solid rgba(124, 108, 255, .3); background: rgba(124, 108, 255, .08); color: var(--text-2); font-size: 14.5px; }
.faq details { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); margin: 0 0 12px; }
.faq summary { cursor: pointer; list-style: none; padding: 16px 20px; font-weight: 600; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--muted); font-weight: 400; font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details > div { padding: 0 20px 16px; }
.faq details > div p:last-child { margin: 0; }

/* ------------------------------------------------------------ sign-in */

.auth-page { min-height: 100vh; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.auth-side {
  position: relative; overflow: hidden; padding: 48px 56px;
  display: flex; flex-direction: column; justify-content: space-between;
  background: radial-gradient(600px 380px at 30% 30%, rgba(124, 108, 255, .35), transparent 70%), radial-gradient(500px 300px at 80% 90%, rgba(34, 199, 232, .2), transparent 70%), #0d1018;
  border-right: 1px solid var(--line);
}
.auth-side h2 { margin: 0 0 14px; font-size: 32px; line-height: 1.3; letter-spacing: -.02em; font-weight: 800; }
.auth-side p { margin: 0; color: var(--text-2); max-width: 30em; }
.auth-side ul { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 12px; }
.auth-side li { display: flex; gap: 10px; align-items: center; color: var(--text-2); font-size: 14.5px; }
.auth-side li svg.i { color: var(--ok); width: 18px; height: 18px; }
.auth-side .small { font-size: 12.5px; color: var(--muted); }
.auth-main { display: grid; place-items: center; padding: 48px 28px; }
.auth-card { width: 100%; max-width: 400px; }
.auth-card h1 { margin: 0 0 6px; font-size: 28px; font-weight: 800; letter-spacing: -.02em; }
.auth-card > p { margin: 0 0 28px; color: var(--muted); }
.field { margin: 0 0 16px; }
.field label { display: flex; justify-content: space-between; margin: 0 0 7px; font-size: 13.5px; font-weight: 600; color: var(--text-2); }
.field label a { font-weight: 500; }
.input {
  width: 100%; height: 46px; padding: 0 14px; border-radius: 10px;
  border: 1px solid var(--line-2); background: var(--panel); color: var(--text);
  font: 15px var(--sans); transition: border-color .15s, box-shadow .15s, background-color .15s;
}
.input::placeholder { color: #5d6579; }
.input:hover { border-color: #3a4357; }
.input:focus { outline: none; border-color: var(--brand); background: var(--panel-2); box-shadow: 0 0 0 4px rgba(124, 108, 255, .2); }
.input[aria-invalid="true"] { border-color: var(--bad); }
.check { display: flex; align-items: center; gap: 9px; margin: 4px 0 22px; font-size: 14px; color: var(--text-2); }
.check input { width: 16px; height: 16px; accent-color: var(--brand); margin: 0; }
.alert { display: none; margin: 0 0 18px; padding: 12px 14px; border-radius: 10px; font-size: 14px; line-height: 1.6; }
.alert.show { display: block; }
.alert.err { border: 1px solid rgba(248, 113, 113, .35); background: rgba(248, 113, 113, .1); color: #fecaca; }
.divider { display: flex; align-items: center; gap: 12px; margin: 26px 0 18px; color: var(--muted); font-size: 12.5px; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.auth-foot { margin-top: 26px; font-size: 13.5px; color: var(--muted); text-align: center; }

/* ------------------------------------------------------------ footer */

.foot { margin-top: 110px; border-top: 1px solid var(--line); background: var(--bg-2); }
.foot .cols { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; padding: 52px 0 36px; }
.foot p { margin: 12px 0 0; font-size: 14px; color: var(--muted); max-width: 26em; }
.foot h4 { margin: 0 0 12px; font-size: 13.5px; color: var(--text); }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; font-size: 14px; }
.foot ul a { color: var(--muted); }
.foot ul a:hover { color: var(--text); }
.foot .bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 20px; padding: 18px 0 26px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--muted); }
.foot .bottom a { color: var(--muted); }
.foot .bottom a:hover { color: var(--text); }

/* ------------------------------------------------------------ narrow */

@media (max-width: 1020px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero h1 { font-size: 40px; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .doc { grid-template-columns: 1fr; }
  .doc nav { display: none; }
  .auth-page { grid-template-columns: 1fr; }
  .auth-side { display: none; }
}
@media (max-width: 760px) {
  .wrap { padding: 0 18px; }
  .menu, .top .actions .btn:not(.primary) { display: none; }
  .top .wrap { gap: 12px; }
  .logo small { display: none; }
  .hero { padding: 52px 0 48px; }
  .hero h1 { font-size: 32px; }
  .hero .sub { font-size: 16px; }
  .specs .wrap { grid-template-columns: repeat(2, 1fr); }
  .specs div:nth-child(3) { border-left: 0; }
  .specs div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .specs b { font-size: 26px; }
  section.block { padding-top: 64px; }
  .block h2 { font-size: 26px; }
  .grid, .steps, .codecs { grid-template-columns: 1fr; }
  .beta { padding: 30px 24px; margin-top: 64px; }
  .foot .cols { grid-template-columns: 1fr 1fr; }
  .foot .cols > div:first-child { grid-column: 1 / -1; }
  .console-foot { grid-template-columns: repeat(3, 1fr); }
  .job .state { min-width: 70px; }
  .page-head h1 { font-size: 30px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}