/* ================= 官网落地页(/、/download) =================
   只给 layouts/landing 用。application 布局的 stylesheet_link_tag :app 也会把本文件带进去,
   所以**所有规则都挂在 body.lp 之下**,不会漏到后台/登录页。
   字体复用后台自托管的 Atkinson(见 beui-tokens.css 的说明),不引任何字体 CDN —— 大陆网络下要秒开。
   视觉:深色底 + 细网格 + 单一青色信号色;动效只有「门」的旋转环与扫描线,
   并在 prefers-reduced-motion 下全部关掉。 */
@font-face {
  font-family: "Atkinson Hyperlegible Next";
  src: url("/assets/atkinson-hyperlegible-next-latin-wght-c30cdd7a.woff2") format("woff2");
  font-weight: 200 800;
  font-display: swap;
  unicode-range: U+0000-00FF, U+2000-206F;
}
@font-face {
  font-family: "Atkinson Hyperlegible Mono";
  src: url("/assets/atkinson-hyperlegible-mono-latin-wght-a2ab4905.woff2") format("woff2");
  font-weight: 200 800;
  font-display: swap;
  unicode-range: U+0000-00FF, U+2000-206F;
}

body.lp {
  --lp-bg: #05080f;
  --lp-surface: rgba(14, 22, 36, 0.72);
  --lp-line: rgba(120, 170, 220, 0.09);
  --lp-line-strong: rgba(120, 200, 255, 0.32);
  --lp-text: #e6eef8;
  --lp-muted: #8a9bb2;
  --lp-signal: #3ee6c4;
  --lp-signal-2: #4aa8ff;
  --lp-font: "Atkinson Hyperlegible Next", -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --lp-mono: "Atkinson Hyperlegible Mono", ui-monospace, "SF Mono", Consolas, monospace;

  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(60rem 40rem at 78% -10%, rgba(74, 168, 255, 0.16), transparent 60%),
    radial-gradient(50rem 30rem at -10% 30%, rgba(62, 230, 196, 0.08), transparent 60%),
    linear-gradient(var(--lp-line) 1px, transparent 1px) 0 0 / 48px 48px,
    linear-gradient(90deg, var(--lp-line) 1px, transparent 1px) 0 0 / 48px 48px,
    var(--lp-bg);
  color: var(--lp-text);
  font-family: var(--lp-font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
body.lp *, body.lp *::before, body.lp *::after { box-sizing: border-box; }
body.lp a { color: inherit; text-decoration: none; }
body.lp :focus-visible { outline: 2px solid var(--lp-signal); outline-offset: 3px; border-radius: 6px; }

body.lp main,
body.lp .lp-nav,
body.lp .lp-footer {
  width: min(1120px, 100% - 32px);
  margin-inline: auto;
}

/* ---------- 顶栏 ---------- */
body.lp .lp-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
}
body.lp .lp-brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: 0.02em; }
body.lp .lp-brand img { border-radius: 7px; }
body.lp .lp-nav__cta {
  font-size: 14px;
  padding: 8px 16px;
  border: 1px solid var(--lp-line-strong);
  border-radius: 999px;
  transition: border-color 0.2s, background 0.2s;
}
body.lp .lp-nav__cta:hover { border-color: var(--lp-signal); background: rgba(62, 230, 196, 0.08); }

/* ---------- 首屏 ---------- */
body.lp .lp-hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
  padding: 72px 0 96px;
}
body.lp .lp-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  font-family: var(--lp-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lp-signal);
}
body.lp .lp-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lp-signal);
  box-shadow: 0 0 0 0 rgba(62, 230, 196, 0.6);
  animation: lp-pulse 2.4s ease-out infinite;
}
body.lp .lp-title {
  margin: 0;
  font-size: clamp(40px, 6.4vw, 76px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.01em;
}
body.lp .lp-title__accent {
  background: linear-gradient(90deg, var(--lp-signal), var(--lp-signal-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
body.lp .lp-lead { max-width: 30em; margin: 24px 0 36px; font-size: 18px; color: var(--lp-muted); }
body.lp .lp-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- 按钮 ---------- */
body.lp .lp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 26px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 15px;
  border: 1px solid transparent;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
}
body.lp .lp-btn--primary {
  background: linear-gradient(135deg, var(--lp-signal), var(--lp-signal-2));
  color: #031015;
  box-shadow: 0 8px 28px -8px rgba(62, 230, 196, 0.55);
}
body.lp .lp-btn--primary:hover { transform: translateY(-1px); box-shadow: 0 12px 34px -8px rgba(62, 230, 196, 0.7); }
body.lp .lp-btn--ghost { border-color: var(--lp-line-strong); color: var(--lp-text); }
body.lp .lp-btn--ghost:hover { border-color: var(--lp-text); }
body.lp .lp-btn--block { display: flex; width: 100%; }
body.lp .lp-btn--disabled {
  border-color: var(--lp-line);
  color: var(--lp-muted);
  cursor: not-allowed;
  background: rgba(255, 255, 255, 0.02);
}

/* ---------- 「门」:旋转环 + 扫描线 ---------- */
body.lp .lp-gate {
  position: relative;
  width: min(380px, 100%);
  aspect-ratio: 1;
  justify-self: center;
}
body.lp .lp-gate__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--lp-line-strong);
}
body.lp .lp-gate__ring--outer {
  inset: 0;
  border-style: dashed;
  animation: lp-spin 40s linear infinite;
}
body.lp .lp-gate__ring--mid {
  inset: 14%;
  border-color: rgba(62, 230, 196, 0.35);
  border-top-color: var(--lp-signal);
  border-width: 2px;
  animation: lp-spin 6s linear infinite reverse;
}
body.lp .lp-gate__sweep {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(from 0deg, rgba(62, 230, 196, 0.22), transparent 22%);
  mask: radial-gradient(circle, transparent 28%, #000 29%);
  -webkit-mask: radial-gradient(circle, transparent 28%, #000 29%);
  animation: lp-spin 4s linear infinite;
}
body.lp .lp-gate__core {
  position: absolute;
  inset: 32%;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(62, 230, 196, 0.18), rgba(5, 8, 15, 0.9) 70%);
  border: 1px solid rgba(62, 230, 196, 0.5);
  box-shadow: 0 0 60px -10px rgba(62, 230, 196, 0.6), inset 0 0 30px rgba(62, 230, 196, 0.15);
}
body.lp .lp-gate__core img { border-radius: 16px; width: 46%; height: auto; }
body.lp .lp-gate__status {
  position: absolute;
  left: 50%;
  bottom: -6px;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  white-space: nowrap;
  font-family: var(--lp-mono);
  font-size: 12px;
  color: var(--lp-text);
  background: var(--lp-surface);
  border: 1px solid var(--lp-line-strong);
  border-radius: 999px;
  backdrop-filter: blur(8px);
}

/* ---------- 特性 ---------- */
body.lp .lp-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--lp-line);
  border-radius: 16px;
  background: var(--lp-surface);
  backdrop-filter: blur(6px);
}
body.lp .lp-feature { padding: 32px 28px; }
body.lp .lp-feature + .lp-feature { border-left: 1px solid var(--lp-line); }
body.lp .lp-feature__idx { margin: 0 0 14px; font-family: var(--lp-mono); font-size: 12px; color: var(--lp-signal); }
body.lp .lp-feature h2 { margin: 0 0 8px; font-size: 19px; }
body.lp .lp-feature p:last-child { margin: 0; color: var(--lp-muted); font-size: 15px; }

/* ---------- 下载 ---------- */
body.lp .lp-download { padding: 112px 0 80px; scroll-margin-top: 24px; }
body.lp .lp-section-head { text-align: center; margin-bottom: 44px; }
body.lp .lp-section-head h2 { margin: 0 0 8px; font-size: clamp(28px, 4vw, 40px); }
body.lp .lp-section-head p:last-child { margin: 0; color: var(--lp-muted); }
body.lp .lp-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
body.lp .lp-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 28px;
  border: 1px solid var(--lp-line);
  border-radius: 16px;
  background: var(--lp-surface);
  transition: border-color 0.2s, transform 0.2s;
}
body.lp .lp-card:not(.is-pending):hover { border-color: var(--lp-line-strong); transform: translateY(-2px); }
body.lp .lp-card::before {
  content: "";
  position: absolute;
  inset: 0 24px auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--lp-signal), transparent);
  opacity: 0.6;
}
body.lp .lp-card.is-pending::before { opacity: 0; }
body.lp .lp-card__head { display: flex; align-items: center; gap: 14px; }
body.lp .lp-card h3 { margin: 0; font-size: 20px; }
body.lp .lp-card__req { margin: 2px 0 0; font-size: 13px; color: var(--lp-muted); }
body.lp .lp-card__icon {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--lp-line-strong);
  background: rgba(62, 230, 196, 0.06) center / 22px no-repeat;
}
/* 平台图标用内联 SVG(单色描边),不引图标字体/外链。 */
body.lp .lp-card__icon--windows {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%233ee6c4'%3E%3Cpath d='M3 5.5 10.5 4.5v7H3zM11.5 4.3 21 3v8.5h-9.5zM3 12.5h7.5v7L3 18.5zM11.5 12.5H21V21l-9.5-1.3z'/%3E%3C/svg%3E");
}
body.lp .lp-card__icon--macos {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233ee6c4' stroke-width='1.6' stroke-linecap='round'%3E%3Crect x='3' y='4' width='18' height='12' rx='2'/%3E%3Cpath d='M8 20h8M12 16v4'/%3E%3C/svg%3E");
}
body.lp .lp-card__icon--android {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233ee6c4' stroke-width='1.6' stroke-linecap='round'%3E%3Crect x='6' y='2.5' width='12' height='19' rx='2.5'/%3E%3Cpath d='M10.5 18.5h3'/%3E%3C/svg%3E");
}
body.lp .lp-card__meta {
  display: grid;
  grid-template-columns: repeat(3, auto);
  justify-content: start;
  gap: 24px;
  margin: 0;
}
body.lp .lp-card__meta dt { font-family: var(--lp-mono); font-size: 11px; letter-spacing: 0.12em; color: var(--lp-muted); }
body.lp .lp-card__meta dd { margin: 2px 0 0; font-family: var(--lp-mono); font-size: 14px; }
body.lp .lp-card__pending { margin: 0; font-size: 14px; color: var(--lp-muted); flex: 1; }
body.lp .lp-card__hash { margin: -8px 0 0; font-size: 12px; color: var(--lp-muted); }
body.lp .lp-card__hash code { font-family: var(--lp-mono); }
body.lp .lp-card__notes { font-size: 14px; color: var(--lp-muted); }
body.lp .lp-card__notes summary { cursor: pointer; color: var(--lp-text); }
body.lp .lp-card__notes p { margin: 8px 0 0; }

/* ---------- 页脚 ---------- */
body.lp .lp-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--lp-line);
  font-size: 13px;
  color: var(--lp-muted);
}
body.lp .lp-footer__mono { font-family: var(--lp-mono); letter-spacing: 0.14em; }

/* ---------- 动效 ---------- */
@keyframes lp-spin { to { transform: rotate(360deg); } }
@keyframes lp-pulse {
  0% { box-shadow: 0 0 0 0 rgba(62, 230, 196, 0.6); }
  70% { box-shadow: 0 0 0 10px rgba(62, 230, 196, 0); }
  100% { box-shadow: 0 0 0 0 rgba(62, 230, 196, 0); }
}
@media (prefers-reduced-motion: reduce) {
  body.lp *, body.lp *::before, body.lp *::after { animation: none !important; transition: none !important; }
}

/* ---------- 窄屏 ---------- */
@media (max-width: 900px) {
  body.lp .lp-hero { grid-template-columns: 1fr; padding: 40px 0 72px; gap: 56px; }
  body.lp .lp-gate { width: min(300px, 80%); }
  body.lp .lp-features, body.lp .lp-cards { grid-template-columns: 1fr; }
  body.lp .lp-feature + .lp-feature { border-left: 0; border-top: 1px solid var(--lp-line); }
}
@media (max-width: 520px) {
  body.lp .lp-lead { font-size: 16px; }
  body.lp .lp-actions .lp-btn { flex: 1; }
  body.lp .lp-footer { flex-direction: column; }
}