:root {
  color-scheme: dark;
  --bg: #07111f;
  --bg-soft: #0b1728;
  --panel: rgba(16, 31, 50, .82);
  --panel-strong: #10233a;
  --line: rgba(174, 206, 232, .14);
  --text: #edf6ff;
  --muted: #9fb2c7;
  --teal: #6ee7d8;
  --blue: #91a7ff;
  --amber: #f4c76a;
  --red: #ff8f9e;
  --shadow: 0 24px 70px rgba(0, 0, 0, .24);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 12% -8%, rgba(110, 231, 216, .13), transparent 34rem),
    radial-gradient(circle at 96% 2%, rgba(145, 167, 255, .16), transparent 30rem),
    var(--bg);
  line-height: 1.7;
}
a { color: var(--teal); text-decoration: none; }
a:hover { color: #b9fff5; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--amber); outline-offset: 4px; }
.skip-link { position: absolute; left: 1rem; top: -5rem; padding: .55rem .8rem; background: var(--amber); color: #162033; border-radius: .5rem; z-index: 10; }
.skip-link:focus { top: 1rem; }
.site-shell { width: min(1160px, calc(100% - 2.5rem)); margin: 0 auto; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.15rem 0 1rem; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: baseline; gap: .65rem; color: var(--text); font-weight: 760; letter-spacing: -.02em; }
.brand strong { font-size: 1rem; }
.brand small { color: var(--muted); font-size: .66rem; letter-spacing: .16em; text-transform: uppercase; }
.nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .25rem; }
.nav a { padding: .42rem .72rem; border-radius: .55rem; color: var(--muted); font-size: .88rem; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); background: rgba(255,255,255,.07); }
.nav .nav-external { color: var(--teal); }
.hero { padding: clamp(3.7rem, 9vw, 7rem) 0 3.8rem; max-width: 850px; }
.eyebrow { display: inline-flex; align-items: center; gap: .5rem; color: var(--teal); font-size: .73rem; font-weight: 750; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow::before { content: ""; display: inline-block; width: 1.8rem; height: 1px; background: currentColor; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -.035em; }
h1 { margin: 1.1rem 0 1rem; font-size: clamp(2.8rem, 7vw, 5.6rem); max-width: 900px; }
h1 span { color: var(--teal); }
h2 { margin: 0 0 .7rem; font-size: clamp(1.55rem, 3vw, 2.25rem); }
h3 { margin: 0 0 .45rem; font-size: 1.07rem; }
.lede { max-width: 700px; margin: 0; color: var(--muted); font-size: clamp(1rem, 2vw, 1.17rem); }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.8rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .45rem; min-height: 2.75rem; padding: .65rem 1rem; border: 1px solid transparent; border-radius: .65rem; font-weight: 730; font-size: .9rem; transition: transform .18s ease, background .18s ease, border-color .18s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #05201f; background: var(--teal); }
.button-primary:hover { color: #05201f; background: #a4fff3; }
.button-quiet { color: var(--text); background: rgba(255,255,255,.05); border-color: var(--line); }
.button-quiet:hover { color: var(--text); background: rgba(255,255,255,.1); border-color: rgba(174, 206, 232, .3); }
.status-row { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.6rem; }
.status { display: inline-flex; align-items: center; gap: .45rem; padding: .38rem .65rem; color: var(--muted); background: rgba(255,255,255,.045); border: 1px solid var(--line); border-radius: 999px; font-size: .78rem; }
.status::before { content: ""; width: .43rem; height: .43rem; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 .2rem rgba(110,231,216,.12); }
.status.warn::before { background: var(--amber); box-shadow: 0 0 0 .2rem rgba(244,199,106,.12); }
.section { padding: 1.5rem 0 4.5rem; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1.2rem; }
.section-heading p { max-width: 560px; margin: 0; color: var(--muted); font-size: .93rem; }
.grid { display: grid; gap: 1rem; }
.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)); }
.card { min-width: 0; padding: 1.25rem; background: linear-gradient(145deg, rgba(19,39,62,.9), rgba(9,22,37,.78)); border: 1px solid var(--line); border-radius: 1rem; box-shadow: var(--shadow); }
.card:hover { border-color: rgba(110,231,216,.32); }
.card p { margin: .45rem 0 0; color: var(--muted); font-size: .9rem; }
.card-link { display: block; color: var(--text); }
.card-link:hover { color: var(--text); }
.card-link .arrow { display: inline-block; margin-left: .35rem; color: var(--teal); transition: transform .18s ease; }
.card-link:hover .arrow { transform: translateX(4px); }
.icon { display: inline-grid; place-items: center; width: 2.25rem; height: 2.25rem; margin-bottom: .8rem; color: var(--teal); background: rgba(110,231,216,.1); border: 1px solid rgba(110,231,216,.2); border-radius: .7rem; font-size: .77rem; font-weight: 800; letter-spacing: .05em; }
.metric { padding: 1.05rem 1.15rem; }
.metric strong { display: block; color: var(--text); font-size: 1.75rem; letter-spacing: -.04em; }
.metric span { color: var(--muted); font-size: .78rem; }
.flow { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); align-items: stretch; gap: .65rem; }
.flow-step { position: relative; padding: 1rem; background: rgba(255,255,255,.045); border: 1px solid var(--line); border-radius: .8rem; }
.flow-step:not(:last-child)::after { content: "→"; position: absolute; top: 50%; right: -.78rem; z-index: 1; color: var(--teal); transform: translateY(-50%); }
.flow-step small { display: block; margin-bottom: .25rem; color: var(--teal); font-size: .68rem; letter-spacing: .13em; text-transform: uppercase; }
.flow-step b { font-size: .94rem; }
.callout { display: flex; gap: .8rem; align-items: flex-start; padding: 1rem 1.1rem; border: 1px solid rgba(110,231,216,.2); border-left: 3px solid var(--teal); border-radius: .75rem; background: rgba(110,231,216,.055); }
.callout.warn { border-color: rgba(244,199,106,.25); border-left-color: var(--amber); background: rgba(244,199,106,.055); }
.callout.danger { border-color: rgba(255,143,158,.25); border-left-color: var(--red); background: rgba(255,143,158,.055); }
.callout p { margin: 0; color: var(--muted); font-size: .9rem; }
.callout b { color: var(--text); }
.page-head { padding: 3.8rem 0 2rem; max-width: 780px; }
.page-head h1 { margin: .65rem 0 .75rem; font-size: clamp(2.35rem, 5vw, 4.15rem); }
.page-head p { margin: 0; color: var(--muted); font-size: 1.02rem; }
.crumb { display: flex; flex-wrap: wrap; gap: .45rem; color: var(--muted); font-size: .79rem; }
.crumb a { color: var(--muted); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: .85rem; background: rgba(10,24,40,.72); }
table { width: 100%; border-collapse: collapse; min-width: 680px; }
th, td { padding: .78rem .9rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); font-size: .86rem; }
th { color: var(--teal); font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; background: rgba(255,255,255,.035); }
tr:last-child td { border-bottom: 0; }
td { color: var(--muted); }
td:first-child { color: var(--text); font-weight: 650; }
code { padding: .12rem .34rem; color: #d7e4ff; background: rgba(145,167,255,.12); border: 1px solid rgba(145,167,255,.18); border-radius: .3rem; font: .82em ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
pre { overflow-x: auto; margin: .8rem 0 0; padding: 1rem 1.05rem; color: #d5e5f4; background: #06101c; border: 1px solid var(--line); border-radius: .7rem; font: .8rem/1.65 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.list { margin: .55rem 0 0; padding-left: 1.2rem; color: var(--muted); }
.list li + li { margin-top: .3rem; }
.tag { display: inline-flex; padding: .2rem .5rem; border-radius: 999px; color: var(--teal); background: rgba(110,231,216,.1); font-size: .7rem; font-weight: 700; }
.tag.amber { color: var(--amber); background: rgba(244,199,106,.1); }
.tag.red { color: var(--red); background: rgba(255,143,158,.1); }
.footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .8rem; padding: 1.6rem 0 2.6rem; color: var(--muted); border-top: 1px solid var(--line); font-size: .78rem; }
.footer p { margin: 0; }
.muted { color: var(--muted); }
.spacer { height: .35rem; }
.backup-console { padding: 1.35rem; }
.backup-console-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 1.25rem; }
.backup-console-head h3 { margin-top: .65rem; }
.backup-console-head p { max-width: 650px; }
.backup-progress-area { margin-top: 1.35rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.backup-progress-meta { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; color: var(--muted); font-size: .82rem; }
.backup-progress-meta strong { color: var(--text); font-size: .92rem; }
.backup-progress-meta span { color: var(--teal); font-variant-numeric: tabular-nums; }
.backup-progress-area progress { display: block; width: 100%; height: .55rem; margin: .75rem 0 .65rem; overflow: hidden; border: 0; border-radius: 999px; background: rgba(255,255,255,.08); }
.backup-progress-area progress::-webkit-progress-bar { background: rgba(255,255,255,.08); border-radius: 999px; }
.backup-progress-area progress::-webkit-progress-value { background: linear-gradient(90deg, var(--teal), var(--blue)); border-radius: 999px; transition: width .35s ease; }
.backup-progress-area progress::-moz-progress-bar { background: linear-gradient(90deg, var(--teal), var(--blue)); border-radius: 999px; }
.backup-console[data-state="running"] progress::-webkit-progress-value { background-size: 180% 100%; animation: backup-progress-shimmer 2.2s linear infinite; }
.backup-console[data-state="running"] progress::-moz-progress-bar { background-size: 180% 100%; animation: backup-progress-shimmer 2.2s linear infinite; }
.backup-message, .backup-result { margin: .45rem 0 0; color: var(--muted); font-size: .84rem; }
.backup-result a { color: var(--teal); font-weight: 650; }
.backup-login { margin-top: 1rem; }
.backup-login[hidden] { display: none; }
@keyframes backup-progress-shimmer { from { background-position: 0 0; } to { background-position: 180% 0; } }
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .flow { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .flow-step:nth-child(2)::after { display: none; }
}
@media (max-width: 680px) {
  .site-shell { width: min(100% - 1.25rem, 1160px); }
  .topbar { align-items: flex-start; flex-direction: column; }
  .nav { justify-content: flex-start; width: 100%; }
  .nav a { padding-left: .5rem; padding-right: .5rem; }
  .hero { padding-top: 3.4rem; }
  h1 { font-size: clamp(2.55rem, 14vw, 4rem); }
  .grid-2, .grid-3, .grid-4, .flow { grid-template-columns: 1fr; }
  .flow-step:not(:last-child)::after { content: "↓"; top: auto; right: auto; bottom: -.86rem; left: 50%; transform: translateX(-50%); }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .backup-console-head { flex-direction: column; }
  .backup-console-head .button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}