:root {
  --bg: #07110d;
  --panel: #0c1b15;
  --panel-2: #10241c;
  --line: #244536;
  --text: #edf8f1;
  --muted: #9bb4a7;
  --green: #77e6a5;
  --green-2: #29b86e;
  --amber: #ffca78;
  --blue: #7cc7ff;
  --red: #ff928a;
  --shadow: 0 20px 60px rgba(0, 0, 0, .28);
  --radius: 18px;
  --mono: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 82% 4%, rgba(41, 184, 110, .12), transparent 28rem),
    linear-gradient(180deg, #07110d, #09150f 55%, #07110d);
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button { font: inherit; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: absolute; left: -999px; top: 8px; }
.skip-link:focus { left: 8px; z-index: 100; padding: 8px 12px; background: var(--green); color: #041008; }

.site-header {
  position: sticky; top: 0; z-index: 30;
  border-bottom: 1px solid rgba(119, 230, 165, .14);
  background: rgba(7, 17, 13, .86);
  backdrop-filter: blur(18px);
}
.nav-wrap { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: -.02em; }
.brand img { width: 42px; height: 42px; border-radius: 12px; }
.brand small { display: block; color: var(--green); font: 500 10px/1.2 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 7px; }
.nav-links a { padding: 9px 12px; color: var(--muted); font-size: 14px; border-radius: 10px; }
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--panel-2); }
.nav-links .nav-cta { color: #06130c; background: var(--green); font-weight: 800; }
.menu-button { display: none; border: 1px solid var(--line); background: var(--panel); color: var(--text); border-radius: 9px; padding: 8px 11px; }

.hero { padding: 82px 0 64px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.04fr .96fr; align-items: center; gap: 58px; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; margin-bottom: 18px; color: var(--green); font: 700 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .1em; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 6px rgba(119, 230, 165, .1); }
h1, h2, h3 { margin: 0; line-height: 1.2; letter-spacing: -.035em; }
h1 { font-size: clamp(42px, 6vw, 76px); }
.hero h1 span { color: var(--green); }
.lead { max-width: 650px; margin: 22px 0 0; color: #b8ccc0; font-size: 18px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 8px; min-height: 46px; padding: 0 20px; border-radius: 11px; border: 1px solid var(--line); font-weight: 800; }
.button.primary { border-color: var(--green); color: #041108; background: var(--green); }
.button.secondary { background: rgba(16, 36, 28, .65); }
.button:hover { transform: translateY(-1px); filter: brightness(1.05); }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 36px; border-top: 1px solid var(--line); }
.metric { padding: 18px 16px 0 0; }
.metric strong { display: block; color: var(--text); font: 800 22px/1.2 var(--mono); }
.metric span { color: var(--muted); font-size: 12px; }

.terminal { border: 1px solid #2a4a3a; border-radius: var(--radius); background: #08110d; box-shadow: var(--shadow); overflow: hidden; transform: rotate(1deg); }
.terminal-bar { display: flex; align-items: center; gap: 7px; padding: 13px 16px; background: #102018; border-bottom: 1px solid var(--line); }
.terminal-bar i { width: 10px; height: 10px; border-radius: 50%; background: #ff6b64; }
.terminal-bar i:nth-child(2) { background: #ffc04f; }
.terminal-bar i:nth-child(3) { background: #58d486; }
.terminal-bar code { margin-left: 8px; color: var(--muted); font: 11px var(--mono); }
.terminal-body { padding: 27px; font: 14px/1.8 var(--mono); color: #cce7d7; }
.terminal-body .prompt { color: var(--green); }
.terminal-body .comment { color: #668478; }
.terminal-shot { margin: 0 20px 22px; overflow: hidden; border: 1px solid #29483a; border-radius: 12px; }
.terminal-shot img { width: 880px; height: 700px; object-fit: cover; object-position: top; }

.section { padding: 76px 0; }
.section.alt { background: rgba(16, 36, 28, .33); border-block: 1px solid rgba(119, 230, 165, .1); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 34px; }
.section-head h2 { font-size: clamp(30px, 4vw, 46px); }
.section-head p { max-width: 550px; margin: 0; color: var(--muted); }
.kicker { margin: 0 0 10px; color: var(--green); font: 700 12px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.grid-4, .grid-3, .grid-2 { display: grid; gap: 18px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card { position: relative; padding: 25px; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, rgba(16, 36, 28, .9), rgba(10, 24, 18, .88)); }
.card:hover { border-color: #3d7258; transform: translateY(-2px); }
.card .num { display: block; margin-bottom: 30px; color: #567666; font: 12px var(--mono); }
.card h3 { font-size: 19px; }
.card p { margin: 11px 0 0; color: var(--muted); font-size: 14px; }
.icon { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 18px; border: 1px solid #3a6953; border-radius: 12px; color: var(--green); background: #112b1f; font: 800 16px var(--mono); }

.topic-link { min-height: 150px; }
.topic-link .arrow { position: absolute; right: 22px; top: 22px; color: var(--green); }
.detail-row { display: grid; grid-template-columns: .75fr 1.25fr; gap: 46px; align-items: start; padding: 32px 0; border-top: 1px solid var(--line); }
.detail-row:last-child { border-bottom: 1px solid var(--line); }
.detail-row h3 { font-size: 24px; }
.detail-row p { margin: 0; color: var(--muted); }
.check-list { display: grid; gap: 10px; padding: 0; margin: 20px 0 0; list-style: none; }
.check-list li::before { content: "✓"; margin-right: 10px; color: var(--green); font-family: var(--mono); }
.platform { text-align: center; }
.platform .icon { margin-inline: auto; }
.platform small, .tag { display: inline-block; margin-top: 14px; padding: 4px 9px; border: 1px solid var(--line); border-radius: 99px; color: var(--muted); font: 11px var(--mono); }

.page-hero { padding: 70px 0 48px; border-bottom: 1px solid var(--line); }
.page-hero h1 { max-width: 860px; font-size: clamp(38px, 5vw, 64px); }
.page-hero p { max-width: 760px; margin: 18px 0 0; color: var(--muted); font-size: 18px; }
.breadcrumb { margin-bottom: 18px; color: var(--muted); font: 12px var(--mono); }
.breadcrumb a { color: var(--green); }
.download-card { overflow: hidden; padding: 0; }
.download-card::before { content: ""; display: block; height: 5px; background: var(--green); }
.download-card.deb::before { background: var(--blue); }
.download-card.rpm::before { background: var(--red); }
.download-content { padding: 26px; }
.package-mark { font: 900 28px var(--mono); }
.download-card.appimage .package-mark { color: var(--green); }
.download-card.deb .package-mark { color: var(--blue); }
.download-card.rpm .package-mark { color: var(--red); }
.package-meta { margin: 20px 0; display: grid; gap: 8px; }
.package-meta div { display: flex; justify-content: space-between; gap: 16px; padding-bottom: 7px; border-bottom: 1px dashed var(--line); font-size: 13px; }
.package-meta span { color: var(--muted); }
.arch-row { display: flex; flex-wrap: wrap; gap: 8px; }
.arch { padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; background: #08140e; font: 12px var(--mono); }
.notice { padding: 18px 20px; border: 1px solid #6f5c32; border-radius: 13px; color: #ecd5a7; background: rgba(112, 78, 25, .15); }
.code-block { position: relative; margin: 16px 0; padding: 18px; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: #050d09; color: #b9ecca; font: 13px/1.7 var(--mono); white-space: pre; }
.steps { counter-reset: step; display: grid; gap: 18px; }
.step { position: relative; padding: 25px 25px 25px 78px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 24px; top: 25px; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; color: #07110d; background: var(--green); font: 900 14px var(--mono); }
.step h3 { font-size: 19px; }
.step p { margin: 8px 0 0; color: var(--muted); }
.toc { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.toc a { padding: 8px 11px; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); font-size: 13px; }
.feature-band { display: grid; grid-template-columns: 90px 1fr; gap: 26px; align-items: start; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.feature-band + .feature-band { margin-top: 16px; }
.feature-band .icon { width: 68px; height: 68px; margin: 0; font-size: 22px; }
.feature-band p { color: var(--muted); }

.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 19px 4px; font-weight: 750; list-style: none; }
.faq summary::after { content: "+"; float: right; color: var(--green); font: 20px var(--mono); }
.faq details[open] summary::after { content: "−"; }
.faq details p { max-width: 860px; margin: -4px 0 20px; color: var(--muted); }
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 34px; border: 1px solid #3f765b; border-radius: var(--radius); background: linear-gradient(110deg, #153c29, #0d2319); }
.cta-band h2 { font-size: 30px; }
.cta-band p { margin: 8px 0 0; color: #acc5b6; }

.site-footer { padding: 55px 0 22px; border-top: 1px solid var(--line); background: #050c08; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 35px; }
.footer-grid h3 { margin-bottom: 15px; font-size: 14px; }
.footer-grid p, .footer-grid a { display: block; margin: 7px 0; color: var(--muted); font-size: 13px; }
.footer-grid a:hover { color: var(--green); }
.footer-bottom { margin-top: 36px; padding-top: 18px; border-top: 1px solid #17271f; color: #718b7c; font-size: 12px; }

@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .terminal { transform: none; }
}
@media (max-width: 720px) {
  .container { width: min(100% - 28px, 1160px); }
  .menu-button { display: block; }
  .nav-links { display: none; position: absolute; left: 14px; right: 14px; top: 68px; padding: 12px; flex-direction: column; align-items: stretch; border: 1px solid var(--line); border-radius: 13px; background: #09150f; box-shadow: var(--shadow); }
  .nav-links.open { display: flex; }
  .nav-links a { text-align: center; }
  .hero { padding-top: 54px; }
  .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .section-head, .cta-band { align-items: flex-start; flex-direction: column; }
  .detail-row { grid-template-columns: 1fr; gap: 12px; }
  .metrics { gap: 5px; }
  .metric strong { font-size: 18px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .feature-band { grid-template-columns: 1fr; }
}
@media (max-width: 440px) {
  h1 { font-size: 38px; }
  .actions .button { width: 100%; }
  .metrics { grid-template-columns: 1fr; border-top: 0; }
  .metric { border-top: 1px solid var(--line); }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: no-preference) {
  .card, .button { transition: transform .2s ease, border-color .2s ease, filter .2s ease; }
}