/* Zennel 落地页 —— 与扩展弹窗同一套配色，观感连贯 */

:root {
  --bg: #0f1115;
  --panel: #161a22;
  --line: #262b36;
  --fg: #e6e9ef;
  --dim: #8b93a7;
  --acc: #4f8cff;
  --acc2: #7c5cff;
  --r: 12px;
  --max: 940px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--acc); text-decoration: none; }
a:hover { text-decoration: underline; }

.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--max); margin: 0 auto; padding: 18px 24px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; color: var(--fg); font-size: 17px; }
.brand:hover { text-decoration: none; }
.mark {
  width: 12px; height: 12px; border-radius: 4px;
  background: linear-gradient(135deg, var(--acc), var(--acc2));
}
.nav nav { display: flex; gap: 20px; font-size: 14.5px; }
.nav nav a { color: var(--dim); }
.nav nav a:hover { color: var(--fg); text-decoration: none; }

main { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

section { padding: 56px 0; border-top: 1px solid var(--line); }
.hero { border-top: 0; padding-top: 64px; padding-bottom: 40px; }

h1 {
  font-size: clamp(30px, 5.2vw, 46px);
  line-height: 1.14; letter-spacing: -0.025em; font-weight: 800; margin: 0 0 20px;
}
h2 { font-size: 26px; letter-spacing: -0.02em; margin: 0 0 10px; }
h3 { font-size: 16.5px; margin: 0 0 8px; letter-spacing: -0.01em; }

.lede { font-size: 17.5px; color: var(--dim); max-width: 62ch; margin: 0 0 22px; }

.cta-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin: 26px 0 0; }
.note { color: var(--dim); font-size: 14px; }

.btn {
  display: inline-block; padding: 11px 22px; border-radius: var(--r);
  background: var(--acc); color: #fff; font-weight: 650; font-size: 15px;
  border: 1px solid transparent;
}
.btn:hover { text-decoration: none; filter: brightness(1.09); }
.btn.ghost { background: transparent; border-color: var(--line); color: var(--fg); }
.btn.ghost:hover { background: var(--panel); filter: none; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; }
.card p { margin: 0; color: var(--dim); font-size: 15px; }

.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; margin-top: 8px; }
.plan { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 24px; }
.plan.featured { border-color: var(--acc); box-shadow: 0 0 0 1px var(--acc) inset; }
.price { font-size: 36px; font-weight: 800; letter-spacing: -0.03em; margin: 6px 0 14px; }
.price small { font-size: 15px; font-weight: 600; color: var(--dim); letter-spacing: 0; }
.plan ul { list-style: none; margin: 0 0 20px; padding: 0; }
.plan li { padding: 5px 0 5px 24px; position: relative; color: var(--dim); font-size: 15px; }
.plan li::before { content: "✓"; position: absolute; left: 0; color: var(--acc); font-weight: 700; }
.plan.featured li { color: var(--fg); }
.plan-cta { margin: 0; }
.plan .btn { width: 100%; text-align: center; }

ol { color: var(--dim); padding-left: 22px; }
ol li { margin-bottom: 8px; }
code {
  background: var(--panel); border: 1px solid var(--line); border-radius: 6px;
  padding: 1px 6px; font: 13.5px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.faq details { border-bottom: 1px solid var(--line); padding: 14px 0; }
.faq details:first-of-type { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 600; font-size: 16px; }
.faq summary::marker { color: var(--dim); }
.faq p { color: var(--dim); margin: 10px 0 0; max-width: 66ch; }

footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 32px 24px 48px; }
.foot-inner {
  max-width: var(--max); margin: 0 auto;
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
.fine { color: var(--dim); font-size: 13.5px; margin: 4px 0 0; max-width: 70ch; }
.small { max-width: var(--max); margin: 22px auto 0; }

/* 法律页面 */
.legal { max-width: 74ch; }
.legal h1 { font-size: 32px; }
.legal h2 { font-size: 19px; margin: 32px 0 8px; }
.legal p, .legal li { color: var(--dim); font-size: 15.5px; }
.legal .updated { color: var(--dim); font-size: 14px; margin-bottom: 28px; }
.legal table { border-collapse: collapse; width: 100%; margin: 12px 0; }
.legal th, .legal td {
  border: 1px solid var(--line); padding: 8px 10px; text-align: left;
  font-size: 14.5px; color: var(--dim);
}
.legal th { color: var(--fg); font-weight: 600; }