:root {
  --ink: #1b1e24; --ink-2: #5b6270; --line: #e2e5ea; --line-2: #cdd2da; --accent: #2440d8; --accent-bg: #3a5bff; --accent-soft: #eef1ff; --paper: #ffffff;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #eceef2; --ink-2: #a7adb8; --line: #2e3238; --line-2: #3d434b; --accent: #9fb0ff; --accent-bg: #4a68ff; --accent-soft: #1f2640; --paper: #16181c; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 16px/1.7 "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.home header, .home main, .home footer { max-width: 980px; }
header { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 16px; padding-top: 28px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
header .brand { flex: 1; display: inline-flex; align-items: center; gap: 8px; font-weight: 600; color: var(--ink); text-decoration: none; }
header .brand img { border-radius: 6px; }
header nav { display: flex; flex-wrap: wrap; gap: 4px 16px; }
a { color: var(--accent); }
h1 { margin: 36px 0 4px; font-size: 28px; line-height: 1.3; }
.home h1 { font-size: 34px; }
.updated { margin: 0 0 28px; color: var(--ink-2); font-size: 14px; }
.lead { margin: 4px 0 0; font-size: 18px; color: var(--ink-2); }
h2 { margin: 40px 0 8px; font-size: 21px; }
h3 { margin: 20px 0 2px; font-size: 16px; }
p, li { color: var(--ink); }
ul { padding-left: 22px; }
table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 15px; }
th, td { padding: 8px 10px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { font-weight: 600; }
.note { padding: 12px 16px; border-left: 3px solid var(--accent); background: var(--accent-soft); }

.cta { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0 26px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; height: 42px; padding: 0 20px; border-radius: 10px;
  background: var(--accent-bg); color: #fff; font-weight: 600; text-decoration: none;
}
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--accent); box-shadow: inset 0 0 0 1px var(--line-2); }
.shot { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 12px 40px rgba(20, 24, 33, .12); }

.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 20px 0 12px; }
.plan { display: flex; flex-direction: column; padding: 20px; border: 1px solid var(--line); border-radius: 14px; }
.plan.featured { border-color: var(--accent-bg); box-shadow: 0 0 0 1px var(--accent-bg); }
.plan h3 { margin: 0; font-size: 17px; }
.price { margin: 6px 0 0; font-size: 32px; font-weight: 700; line-height: 1.2; }
.price small { margin-left: 4px; font-size: 14px; font-weight: 400; color: var(--ink-2); }
.plan ul { margin: 6px 0 16px; padding-left: 20px; font-size: 15px; }
.plan li { margin: 4px 0; }
.plan .btn { margin-top: auto; }
.fine, .fine li { font-size: 14px; color: var(--ink-2); }
.plan .fine { margin: 10px 0 0; }

footer { margin-top: 56px; padding-top: 16px; padding-bottom: 40px; border-top: 1px solid var(--line); color: var(--ink-2); font-size: 14px; }
footer p { margin: 4px 0; color: var(--ink-2); }
footer .links { display: flex; flex-wrap: wrap; gap: 4px 18px; }

@media (max-width: 760px) {
  .plans { grid-template-columns: 1fr; }
  .home h1 { font-size: 28px; }
}