:root {
  color-scheme: light dark;
  --paper: #efefeb;
  --surface: #fbfbf8;
  --surface-2: #f2f2ee;
  --ink: #191a1d;
  --muted: #6f7076;
  --line: #d7d7d2;
  --grid: rgba(25, 26, 29, 0.045);
  --accent: #d14334;
  --accent-ink: #ffffff;
  --green: #2e7d5b;
  --blue: #4f6d8f;
  --icon-bg: #e7e7e1;
  --shadow: 0 12px 40px rgba(25, 26, 29, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0f1012;
    --surface: #17181b;
    --surface-2: #1e1f23;
    --ink: #f1f0ec;
    --muted: #a0a1a7;
    --line: #2b2c31;
    --grid: rgba(241, 240, 236, 0.045);
    --accent: #f26b58;
    --accent-ink: #160b0a;
    --green: #67bd92;
    --blue: #85a7c8;
    --icon-bg: #25262b;
    --shadow: 0 16px 48px rgba(0, 0, 0, 0.42);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

main {
  width: min(880px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 48px;
}

.profile-frame {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.profile-head {
  position: relative;
  padding: 26px 28px 28px;
  border-bottom: 1px solid var(--line);
}

.profile-stamp {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 34px;
  color: var(--muted);
  font-family: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.stamp-mark {
  width: 9px;
  height: 9px;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 14%, transparent);
}

.identity {
  display: flex;
  align-items: center;
  gap: 22px;
}

.profile-avatar {
  flex: none;
  width: 112px;
  height: 112px;
  object-fit: cover;
  border-radius: 28px;
  border: 1px solid var(--line);
  box-shadow: 0 10px 30px rgba(25, 26, 29, 0.12);
}

.identity-text {
  min-width: 0;
}

.identity-text h1 {
  margin: 0;
  font-family: "Iowan Old Style", "Songti SC", "Noto Serif CJK SC", Georgia, serif;
  font-size: clamp(2.15rem, 7vw, 4rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.profile-bio {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.presence {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
  padding: 7px 10px;
  color: var(--muted);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.presence-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--green) 14%, transparent);
}

.presence-sep {
  opacity: 0.5;
}

.profile-groups {
  padding: 8px 28px 30px;
}

.profile-group {
  margin-top: 26px;
}

.group-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.group-head h2 {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.group-line {
  flex: 1;
  height: 1px;
  background: var(--line);
}

.group-count {
  color: var(--accent);
  font-family: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, monospace;
  font-size: 0.74rem;
}

.profile-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.profile-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 156px;
  padding: 17px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.profile-tile:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 38%, var(--line));
  background: var(--surface-2);
}

.profile-tile.is-empty {
  cursor: default;
  border-style: dashed;
  opacity: 0.58;
}

.profile-tile.is-empty:hover {
  transform: none;
  border-color: var(--line);
  background: var(--surface);
}

.tile-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  color: var(--accent);
  background: var(--icon-bg);
  border-radius: 13px;
}

.profile-icon {
  width: 25px;
  height: 25px;
}

.tile-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: auto;
  padding-top: 18px;
}

.tile-label {
  font-weight: 650;
  font-size: 1rem;
}

.tile-desc {
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.4;
}

.tile-arrow {
  position: absolute;
  top: 13px;
  right: 14px;
  color: var(--muted);
  font-size: 1rem;
  transition: color 0.18s ease, transform 0.18s ease;
}

.profile-tile:hover .tile-arrow {
  color: var(--accent);
  transform: translate(2px, -2px);
}

.profile-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 18px 28px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-family: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.footer-rule {
  width: 28px;
  height: 1px;
  background: var(--line);
}

@media (min-width: 760px) {
  .profile-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  main {
    width: min(100% - 20px, 880px);
    padding: 20px 0 24px;
  }

  .profile-frame {
    border-radius: 18px;
  }

  .profile-head {
    padding: 22px 20px 24px;
  }

  .profile-stamp {
    margin-bottom: 26px;
  }

  .identity {
    align-items: flex-start;
    gap: 16px;
  }

  .profile-avatar {
    width: 82px;
    height: 82px;
    border-radius: 20px;
  }

  .profile-groups {
    padding: 8px 20px 24px;
  }

  .profile-group {
    margin-top: 22px;
  }
}

@media (max-width: 420px) {
  .profile-grid {
    grid-template-columns: 1fr;
  }

  .profile-tile {
    min-height: 128px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .profile-tile,
  .tile-arrow {
    transition: none;
  }
}