/* Standalone not-found page */
:root {
  --text: #526460;
  --text-h: #132c29;
  --bg: #f7fbf8;
  --card: rgba(255, 255, 255, 0.9);
  --border: #dbe7e2;
  --accent: #147d70;
  --accent-strong: #0a6259;
  --accent-bg: rgba(20, 125, 112, 0.085);
  --coral: #ef806b;
  --shadow: rgba(24, 78, 70, 0.12) 0 30px 70px -34px;
  --sans: system-ui, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  font: 16px/1.78 var(--sans);
  color: var(--text);
  background:
    radial-gradient(circle at 10% 4%, rgba(126, 220, 194, 0.24), transparent 28rem),
    radial-gradient(circle at 92% 16%, rgba(239, 128, 107, 0.12), transparent 24rem),
    linear-gradient(180deg, #f8fcfa 0%, #f3f8f5 100%);
}

body::before {
  content: "槐序 · 知潮";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  height: 58px;
  display: flex;
  align-items: center;
  padding: 0 max(24px, calc((100vw - 980px) / 2));
  border-bottom: 1px solid rgba(219, 231, 226, 0.82);
  background: rgba(248, 252, 250, 0.84);
  backdrop-filter: blur(18px);
  color: var(--text-h);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.legal-page {
  position: relative;
  width: min(880px, calc(100% - 32px));
  margin: 92px auto 72px;
  padding: clamp(30px, 5vw, 58px) clamp(22px, 6vw, 70px) 72px;
  border: 1px solid rgba(219, 231, 226, 0.9);
  border-radius: 28px;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  overflow: hidden;
}

.legal-page::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--accent), #78cbb9 58%, var(--coral));
}

.legal-back {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  margin-bottom: 28px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--accent-strong);
  background: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.legal-back:hover {
  transform: translateX(-2px);
  border-color: rgba(20, 125, 112, 0.42);
}

h1 {
  margin: 0 0 8px;
  color: var(--text-h);
  font-size: clamp(34px, 6vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.legal-updated {
  display: inline-flex;
  margin: 0 0 38px;
  padding: 5px 11px;
  border-radius: 999px;
  color: var(--accent-strong);
  background: var(--accent-bg);
  font-size: 12px;
  font-weight: 650;
}

h2 {
  position: relative;
  margin: 48px 0 14px;
  padding-left: 16px;
  color: var(--text-h);
  font-size: 21px;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  width: 4px;
  height: 1em;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent), #78cbb9);
}

p,
li {
  font-size: 15px;
}

p {
  margin: 14px 0;
}

ul {
  margin: 16px 0;
  padding: 14px 18px 14px 38px;
  border: 1px solid rgba(219, 231, 226, 0.72);
  border-radius: 16px;
  background: rgba(247, 251, 248, 0.72);
}

li {
  margin-bottom: 8px;
}

li:last-child {
  margin-bottom: 0;
}

strong {
  color: var(--text-h);
}

a {
  color: var(--accent-strong);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.legal-callout {
  position: relative;
  margin: 30px 0 38px;
  padding: 22px 24px 22px 28px;
  border: 1px solid rgba(20, 125, 112, 0.18);
  border-radius: 18px;
  background:
    radial-gradient(circle at 100% 0%, rgba(126, 220, 194, 0.2), transparent 14rem),
    var(--accent-bg);
  color: #38534e;
}

.legal-callout::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 25px;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--coral);
  box-shadow: 0 0 0 5px rgba(239, 128, 107, 0.13);
}

.legal-callout > :first-child {
  margin-top: 0;
}

.legal-callout > :last-child {
  margin-bottom: 0;
}

.legal-callout ul {
  border: 0;
  background: transparent;
  padding-top: 4px;
  padding-bottom: 0;
}

@media (max-width: 600px) {
  body::before {
    height: 52px;
    padding: 0 18px;
  }

  .legal-page {
    width: calc(100% - 20px);
    margin: 70px auto 24px;
    padding: 26px 18px 50px;
    border-radius: 21px;
  }

  .legal-back {
    margin-bottom: 22px;
  }

  .legal-updated {
    display: inline-block;
    margin-bottom: 28px;
  }

  h2 {
    margin-top: 38px;
    font-size: 19px;
  }

  p,
  li {
    font-size: 14px;
  }

  ul {
    padding-left: 32px;
  }

  .legal-callout {
    padding: 19px 18px 19px 24px;
    border-radius: 15px;
  }

  .legal-callout::before {
    left: 10px;
    top: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .legal-back {
    transition: none;
  }
}

.legal-filing {
  width: min(860px, calc(100% - 32px));
  margin: -8px auto 40px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.legal-filing a {
  color: inherit;
  text-underline-offset: 3px;
}