/* 大卫之声官网 — Swiss minimal, brand red #D81F27 */
:root {
  --red: #d81f27;
  --red-soft: rgba(216, 31, 39, 0.08);
  --ink: #10131a;
  --ink-soft: #5b6270;
  --line: #e7e9ee;
  --paper: #ffffff;
  --paper-soft: #f6f7f9;
  --radius: 14px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

/* Header */
.site-header { border-bottom: 1px solid var(--line); background: var(--paper); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--red); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font: 700 19px Georgia, serif;
}
.brand-name { display: flex; flex-direction: column; font-weight: 700; font-size: 17px; line-height: 1.15; }
.brand-name small { font-weight: 500; font-size: 10px; letter-spacing: 0.14em; color: var(--ink-soft); }
.nav { display: flex; gap: 26px; }
.nav a { color: var(--ink-soft); text-decoration: none; font-size: 15px; }
.nav a:hover { color: var(--red); }

/* Hero */
.hero {
  background:
    radial-gradient(1200px 420px at 85% -10%, rgba(216, 31, 39, 0.09), transparent 60%),
    linear-gradient(180deg, var(--paper) 0%, var(--paper-soft) 100%);
  border-bottom: 1px solid var(--line);
  padding: 88px 0 72px;
}
.kicker { font-size: 12px; letter-spacing: 0.22em; font-weight: 600; color: var(--red); margin: 0 0 14px; }
.kicker.red { color: var(--red); }
.hero h1 { font-size: clamp(30px, 4.6vw, 46px); line-height: 1.22; margin: 0 0 18px; letter-spacing: 0.01em; }
.lede { max-width: 620px; color: var(--ink-soft); font-size: 17px; margin: 0 0 30px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-note { margin-top: 14px; font-size: 13px; color: var(--ink-soft); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 22px; border-radius: 10px; border: 1px solid transparent;
  font-size: 15px; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: var(--red); color: #fff; }
.btn.primary:hover { background: #c01b23; }
.btn.primary[aria-disabled="true"] { background: #b9bec7; cursor: default; transform: none; }
.btn.ghost { background: var(--paper); color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--red); color: var(--red); }

/* Entry cards */
.entries { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; padding-top: 56px; padding-bottom: 56px; }
.card {
  display: block; background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 26px 22px;
  text-decoration: none; color: var(--ink);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: rgba(216, 31, 39, 0.45); box-shadow: 0 10px 28px rgba(16, 19, 26, 0.08); transform: translateY(-2px); }
.card-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 11px;
  background: var(--red-soft); color: var(--red);
  font-size: 20px; margin-bottom: 14px;
}
.card-icon.alt { background: rgba(16, 19, 26, 0.06); color: var(--ink); }
.card h2 { font-size: 18px; margin: 0 0 8px; }
.card p { margin: 0 0 14px; color: var(--ink-soft); font-size: 14.5px; }
.card-link { color: var(--red); font-size: 14px; font-weight: 600; }

/* Download */
.download {
  background: var(--paper-soft);
  border-top: 1px solid var(--line);
  padding: 64px 0 72px;
}
.download h2 { font-size: 26px; margin: 0 0 10px; }
.section-lede { color: var(--ink-soft); max-width: 640px; margin: 0 0 26px; }
.download-card {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px;
}
.download-main { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.download-main strong { font-size: 17px; display: block; }
.download-main small { color: var(--ink-soft); display: block; margin-top: 2px; }
.download-main .btn { margin-left: auto; }
.download-meta { display: flex; flex-wrap: wrap; gap: 28px; margin: 18px 0 0; padding: 14px 0 0; border-top: 1px dashed var(--line); }
.download-meta div { min-width: 180px; }
.download-meta dt { font-size: 12px; color: var(--ink-soft); }
.download-meta dd { margin: 2px 0 0; font-size: 13.5px; word-break: break-all; }
.install-note { margin: 16px 0 0; font-size: 13px; color: var(--ink-soft); }

/* Changelog */
.changelog { margin-top: 30px; }
.changelog h3 { font-size: 15px; margin: 0 0 10px; }
.changelog ol { list-style: none; margin: 0; padding: 0; }
.changelog li { display: flex; align-items: baseline; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.changelog li:last-child { border-bottom: none; }
.changelog strong { min-width: 56px; }
.changelog .date { color: var(--ink-soft); min-width: 86px; font-size: 13px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--paper-soft); }
.site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding: 22px 24px; font-size: 13px; color: var(--ink-soft); }

@media (max-width: 760px) {
  .entries { grid-template-columns: 1fr; }
  .hero { padding: 60px 0 52px; }
  .nav { gap: 16px; }
  .download-main .btn { margin-left: 0; width: 100%; justify-content: center; }
}