* { margin: 0; padding: 0; box-sizing: border-box }
:root {
  --ink: #14152a; --ink-2: #2c2d45; --muted: #8b8ca3; --sub: #5a5b74;
  --accent: #9260e5; --accent-deep: #7d46d1; --line: #e9e9f2;
  --bg: #fff; --bg-2: #fbfbfe; --chip: #f5f5fb;
  --mono: ui-monospace, 'SF Mono', SFMono-Regular, Menlo, Consolas, monospace;
}
html { scroll-behavior: smooth }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink-2); background: var(--bg); line-height: 1.65; font-size: 15px;
}
a { color: var(--accent-deep); text-decoration: none }
a:hover { text-decoration: underline }

.topbar { border-bottom: 1px solid var(--line); background: var(--bg-2) }
.topbar-in { max-width: 56rem; margin: 0 auto; padding: 14px 22px; display: flex; align-items: center; gap: 14px }
.logo { font-weight: 800; letter-spacing: -0.02em; font-size: 18px; color: var(--ink) }
.logo .dot { color: var(--accent) }
.logo small { font-weight: 650; color: var(--muted); font-size: 12px; margin-left: 6px }
.topbar-in .back { margin-left: auto; font-size: 13px; color: var(--sub) }

.doc { max-width: 56rem; margin: 0 auto; padding: 40px 22px 80px }
.eyebrow { font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: var(--accent-deep) }
h1 { font-size: 30px; letter-spacing: -0.02em; color: var(--ink); margin: 8px 0 10px; line-height: 1.15 }
h2 { font-size: 19px; color: var(--ink); margin: 34px 0 8px; letter-spacing: -0.01em }
h3 { font-size: 15.5px; color: var(--ink); margin: 22px 0 6px }
p { margin: 10px 0 }
.lead { font-size: 16.5px; color: var(--sub) }
ul, ol { margin: 10px 0 10px 22px }
li { margin: 6px 0 }
b, strong { color: var(--ink); font-weight: 650 }
code { font-family: var(--mono); font-size: 13px; background: var(--chip); border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px }

.shot { width: 100%; border: 1px solid var(--line); border-radius: 14px; margin: 18px 0 6px; display: block }
.caption { font-size: 12.5px; color: var(--muted); margin: 4px 0 18px }

.tip { border-left: 3px solid var(--accent); background: var(--bg-2); border-radius: 0 10px 10px 0; padding: 12px 16px; margin: 16px 0 }
.tip p { margin: 0 }
.warn { border-left: 3px solid #c2820a; background: #fffbeb; border-radius: 0 10px 10px 0; padding: 12px 16px; margin: 16px 0 }
.warn p { margin: 0; color: #92400e }

.steps { counter-reset: st; margin: 14px 0; padding: 0; list-style: none }
.steps li { counter-increment: st; display: flex; gap: 14px; margin: 12px 0; padding: 0 }
.steps li::before {
  content: counter(st); flex: none; width: 26px; height: 26px; border-radius: 50%;
  background: #ede4ff; color: var(--accent-deep); font-weight: 800; font-size: 13px;
  display: flex; align-items: center; justify-content: center; margin-top: 1px;
}

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 22px 0 }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr } }
.card {
  display: block; border: 1px solid var(--line); border-radius: 14px; overflow: hidden;
  background: var(--bg); transition: border-color .15s, background .15s, transform .15s;
}
.card:hover { border-color: var(--accent); background: #faf8ff; text-decoration: none; transform: translateY(-2px) }
.card .thumb { display: block; width: 100%; height: 130px; object-fit: cover; object-position: center 20%; border-bottom: 1px solid var(--line); background: #f7f7fc }
.card .pad { display: block; padding: 15px 18px 17px }
.card .t { font-size: 15px; font-weight: 700; color: var(--ink); display: block }
.card .d { font-size: 13px; color: var(--muted); margin-top: 3px; display: block; line-height: 1.5 }
.card .m { font-family: var(--mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent-deep) }
.chip { display: inline-block; background: var(--accent); color: #fff; font-size: 9px; font-weight: 800; letter-spacing: .05em; border-radius: 6px; padding: 2px 7px; vertical-align: 2px; margin-left: 6px }

table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 14px }
th, td { text-align: left; padding: 9px 12px; border: 1px solid var(--line); color: var(--ink-2); vertical-align: top }
th { background: var(--bg-2); font-weight: 650; color: var(--ink); font-size: 13px }

.foot { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 18px; font-size: 13px; color: var(--muted); display: flex; gap: 18px; flex-wrap: wrap }
.next { margin-top: 36px; display: flex; gap: 14px; flex-wrap: wrap }
.next a { border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px; font-size: 13.5px; font-weight: 650 }
.next a:hover { border-color: var(--accent); text-decoration: none; background: #faf8ff }