/* zstock website. Dark, cool, system fonts only (no web fonts, no CDN). */
:root {
  color-scheme: dark;
  --bg: #0d1117;
  --bg-2: #141a22;
  --card: #161d27;
  --line: rgba(255, 255, 255, 0.09);
  --text: #e8edf3;
  --muted: #a7b1bd;
  --dim: #7d8794;
  --accent: #5b9dff;
  --accent-ink: #061226;
  --ok: #4ade80;
  --warn: #fbbf24;
  --err: #f87171;
  --radius: 14px;
  --max: 1080px;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  --mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 72px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.7 var(--sans); overflow-x: hidden; }
img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, kbd, pre { font-family: var(--mono); font-size: 0.92em; }
code { background: rgba(255, 255, 255, 0.07); padding: 0.1em 0.4em; border-radius: 6px; overflow-wrap: anywhere; }
kbd { border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 6px; padding: 0 0.4em; background: var(--bg-2); }
h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; margin: 0 0 0.6em; }
h1 { font-size: clamp(30px, 5vw, 48px); }
h2 { font-size: clamp(24px, 3.4vw, 32px); margin-top: 0; }
h3 { font-size: 19px; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }

/* Header */
.top { position: sticky; top: 0; z-index: 20; background: rgba(13, 17, 23, 0.86); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 18px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 18px; }
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.nav { display: flex; gap: 18px; margin-left: auto; align-items: center; font-size: 15px; }
.nav a { color: var(--muted); }
.nav a:hover { color: var(--text); text-decoration: none; }
@media (max-width: 640px) { .nav .hide-sm { display: none; } .nav { gap: 12px; } }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 20px; border-radius: 999px; font-weight: 600; font-size: 15px; border: 1px solid var(--line); color: var(--text); background: rgba(255, 255, 255, 0.05); cursor: pointer; font-family: inherit; }
.btn:hover { text-decoration: none; background: rgba(255, 255, 255, 0.1); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { background: #7fb3ff; }
.btn.sm { padding: 6px 14px; font-size: 14px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* Hero */
.hero { padding: 64px 0 40px; background: radial-gradient(900px 420px at 70% -10%, rgba(91, 157, 255, 0.14), transparent 70%); }
.eyebrow { font: 600 12px/1 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 18px; }
.lead { font-size: 18px; color: var(--muted); max-width: 680px; }
.facts { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 18px; color: var(--dim); font-size: 14px; }
.facts span::before { content: "•"; margin-right: 8px; color: var(--accent); }
.cmd { display: flex; align-items: center; gap: 10px; margin-top: 22px; background: #090c11; border: 1px solid var(--line); border-radius: 12px; padding: 10px 10px 10px 16px; max-width: 680px; }
.cmd code { background: none; padding: 0; flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap; color: #dfe6ee; }
.shot { margin: 36px 0 0; }
.shot img { border-radius: 16px; border: 1px solid var(--line); }
.shot figcaption { color: var(--dim); font-size: 14px; margin-top: 10px; text-align: center; }

/* Sections */
section { padding: 64px 0; border-top: 1px solid var(--line); }
.sec-head { max-width: 720px; margin-bottom: 28px; }
.sec-head p { color: var(--muted); }
.grid > *, .split > *, .more > * { min-width: 0; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin-bottom: 8px; }
.card p, .card li { color: var(--muted); font-size: 15px; }
.card p:last-child { margin-bottom: 0; }
.idx { font: 600 12px/1 var(--mono); color: var(--accent); letter-spacing: 0.1em; display: block; margin-bottom: 12px; }
.split { display: grid; gap: 28px; grid-template-columns: 1fr; align-items: center; }
@media (min-width: 860px) { .split { grid-template-columns: 1fr 1fr; } }
.split img { border-radius: 14px; border: 1px solid var(--line); }
ul.clean { padding-left: 1.2em; margin: 0 0 1em; }
ul.clean li { margin: 0.3em 0; }

/* Tables */
.table { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 15px; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; background: var(--bg-2); }
tr:last-child td { border-bottom: 0; }
.yes { color: var(--ok); }
.part { color: var(--warn); }

/* Steps */
ol.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
ol.steps > li { min-width: 0; counter-increment: s; position: relative; padding: 18px 18px 18px 62px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
ol.steps > li::before { content: counter(s, decimal-leading-zero); position: absolute; left: 18px; top: 18px; font: 600 14px/1.7 var(--mono); color: var(--accent); }
ol.steps > li p { color: var(--muted); margin: 0.3em 0 0; }

/* Pricing */
.price-card { max-width: 520px; background: linear-gradient(160deg, #1a2433, #121821); border: 1px solid rgba(91, 157, 255, 0.35); border-radius: 18px; padding: 30px; }
.price { font-size: 48px; font-weight: 800; letter-spacing: -0.02em; }
.price small { font-size: 16px; color: var(--muted); font-weight: 500; margin-left: 6px; }
.price-card ul { padding-left: 1.2em; color: var(--muted); }
.note { color: var(--dim); font-size: 14px; }

/* FAQ */
details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 600; }
details[open] summary { margin-bottom: 8px; }
details p, details li { color: var(--muted); }
details p:last-child { margin-bottom: 0; }

/* Article (guides, legal) */
.article { padding: 48px 0 64px; }
.article h2 { margin-top: 1.8em; font-size: 24px; }
.article h3 { margin-top: 1.4em; }
.article p, .article li { color: #d3dae3; }
.article figure { margin: 1.4em 0; }
.article figure img { border-radius: 12px; border: 1px solid var(--line); }
.article figcaption { color: var(--dim); font-size: 14px; margin-top: 8px; }
.crumbs { font-size: 14px; color: var(--dim); margin-bottom: 18px; }
.crumbs a { color: var(--muted); }
.meta { color: var(--dim); font-size: 14px; margin-bottom: 28px; }
.callout { border-left: 3px solid var(--accent); background: rgba(91, 157, 255, 0.07); padding: 12px 16px; border-radius: 0 10px 10px 0; margin: 1.2em 0; }
.callout p:last-child { margin-bottom: 0; }
pre { background: #090c11; border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; overflow-x: auto; line-height: 1.55; }
pre code { background: none; padding: 0; overflow-wrap: normal; }
.more { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr)); margin-top: 18px; }
.more a { display: block; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; color: var(--text); }
.more a:hover { text-decoration: none; border-color: rgba(91, 157, 255, 0.45); }
.more a span { display: block; color: var(--dim); font-size: 14px; margin-top: 4px; }

/* License key box (success page) */
.keybox { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; background: #090c11; border: 1px solid rgba(91, 157, 255, 0.4); border-radius: 12px; padding: 16px; margin: 1em 0; }
.keybox code { font-size: 20px; letter-spacing: 0.06em; background: none; color: var(--accent); flex: 1; min-width: 0; }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 36px 0 48px; color: var(--dim); font-size: 14px; }
footer .wrap { display: grid; gap: 10px; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 18px; }
footer a { color: var(--muted); }

/* zstock */
.up { color: #f05a5a; } .down { color: #2bb58a; }
.risk { border: 1px solid rgba(251, 191, 36, 0.35); background: rgba(251, 191, 36, 0.06); border-radius: 12px; padding: 12px 16px; color: var(--muted); font-size: 14px; }
.shots { display: grid; gap: 20px; }