* {
  box-sizing: border-box;
}

:root {
  color: #1b1b1a;
  background: #f3f2ee;
  font-family: Georgia, "Times New Roman", serif;
  color-scheme: light;
}

html {
  min-height: 100%;
  background: #f3f2ee;
}

body {
  min-height: 100svh;
  margin: 0;
  background-color: #f3f2ee;
  background-image:
    radial-gradient(circle at 50% 4%, rgba(255, 255, 255, 0.95), transparent 32%),
    linear-gradient(rgba(66, 64, 58, 0.075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(66, 64, 58, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(66, 64, 58, 0.038) 1px, transparent 1px),
    linear-gradient(90deg, rgba(66, 64, 58, 0.018) 1px, transparent 1px);
  background-size: auto, 48px 48px, 56px 56px, 192px 192px, 224px 224px;
  background-position: center top;
  color: #1b1b1a;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  width: min(480px, calc(100% - 56px));
  min-height: 100svh;
  margin: 0 auto;
  padding: max(64px, env(safe-area-inset-top) + 48px) 0 max(28px, env(safe-area-inset-bottom) + 20px);
  display: flex;
  flex-direction: column;
}

.content {
  width: 100%;
}

.hero {
  padding-top: 4px;
}

h1 {
  margin: 0;
  color: #1b1b1a;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(54px, 16vw, 68px);
  font-weight: 600;
  line-height: .94;
  letter-spacing: 0;
}

h1 span {
  display: block;
}

.hero-rule {
  width: 32px;
  height: 1px;
  margin-top: 24px;
  background: currentColor;
  opacity: .55;
}

.save-contact {
  position: relative;
  min-height: 62px;
  margin-top: 20px;
  padding: 0 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #1b1b1a;
  border-radius: 14px;
  background: #1b1b1a;
  color: #fbfaf7;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  text-align: center;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.save-contact span:first-child {
  display: block;
}

.save-contact span:last-child {
  position: absolute;
  right: 19px;
  top: 50%;
  font-family: Arial, sans-serif;
  font-size: 17px;
  line-height: 1;
  transform: translateY(-50%);
}

.contact-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.contact-box {
  min-height: 74px;
  padding: 12px 12px 11px;
  display: grid;
  grid-template-columns: 19px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  border: 1px solid #dcdad2;
  border-radius: 13px;
  background: #fbfaf7;
  color: #1b1b1a;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: background-color .14s ease, border-color .14s ease, transform .14s ease;
}

.contact-box:active,
.share-card:active {
  background: #e6e4dd;
}

.contact-icon {
  width: 19px;
  height: 19px;
  flex: 0 0 19px;
  display: block;
  object-fit: contain;
}

.contact-icon-dark {
  display: none;
}

.site-mark {
  width: 19px;
  height: 19px;
  display: grid;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 4px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 7px;
  font-weight: 700;
  letter-spacing: -.05em;
  line-height: 1;
}

.box-content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.box-label {
  min-width: 0;
  overflow: hidden;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.box-detail {
  overflow: hidden;
  color: #6f6d67;
  font-size: 10px;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
  user-select: none;
  -webkit-user-select: none;
}

.box-arrow {
  align-self: start;
  color: #6f6d67;
  font-family: Arial, sans-serif;
  font-size: 15px;
  line-height: 1;
}

.share-card {
  width: 100%;
  min-height: 46px;
  margin-top: 10px;
  padding: 0 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  background: transparent;
  color: #6f6d67;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.share-card span:last-child {
  font-family: Arial, sans-serif;
  font-size: 14px;
}

footer {
  margin-top: auto;
  padding-top: 28px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 10px;
  color: #6f6d67;
  font-size: 10px;
  line-height: 1.35;
  letter-spacing: .05em;
}

.version {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 9px;
  letter-spacing: .02em;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: max(20px, env(safe-area-inset-bottom) + 12px);
  z-index: 200;
  max-width: calc(100% - 40px);
  padding: 8px 12px;
  border: 1px solid #dcdad2;
  border-radius: 999px;
  background: #fbfaf7;
  color: #1b1b1a;
  font-size: 11px;
  line-height: 1;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 6px);
  transition: opacity .16s ease, transform .16s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.lamp-switch {
  position: fixed;
  top: max(12px, env(safe-area-inset-top) + 5px);
  right: max(16px, env(safe-area-inset-right) + 8px);
  z-index: 100;
  width: 58px;
  height: 72px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #77736c;
  cursor: pointer;
  appearance: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.lamp {
  position: absolute;
  inset: 0;
}

.lamp-mount {
  position: absolute;
  top: 0;
  left: 19px;
  width: 20px;
  height: 8px;
  border: 1px solid #aaa69e;
  border-radius: 3px;
  background: #d2cfc7;
}

.lamp-wire {
  position: absolute;
  top: 7px;
  left: 28px;
  width: 2px;
  height: 25px;
  border-radius: 2px;
  background: currentColor;
  opacity: .75;
}

.lamp-shade {
  position: absolute;
  top: 29px;
  left: 7px;
  width: 44px;
  height: 21px;
  border: 1px solid #aaa69e;
  border-radius: 24px 24px 6px 6px;
  background: #ddd9d0;
}

.lamp-bulb {
  position: absolute;
  top: 47px;
  left: 22px;
  width: 15px;
  height: 15px;
  border: 1px solid #8c887f;
  border-radius: 50%;
  background: #f1eee6;
}

.lamp-switch:active .lamp-shade,
.lamp-switch.activating .lamp-shade {
  transform: translateY(2px);
}

.lamp-switch:active .lamp-bulb,
.lamp-switch.activating .lamp-bulb {
  transform: translateY(2px) scale(.94);
}

:root[data-theme="dark"] {
  color: #f5f4ef;
  background: #151513;
  color-scheme: dark;
}

:root[data-theme="dark"] html,
:root[data-theme="dark"] body {
  background-color: #151513;
}

:root[data-theme="dark"] body {
  background-image:
    radial-gradient(circle at 50% 4%, rgba(53, 52, 48, 0.34), transparent 32%),
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.01) 1px, transparent 1px);
  background-size: auto, 48px 48px, 56px 56px, 192px 192px, 224px 224px;
  background-position: center top;
}

:root[data-theme="dark"] body {
  color: #f5f4ef;
}

:root[data-theme="dark"] h1 {
  color: #f5f4ef;
}

:root[data-theme="dark"] footer,
:root[data-theme="dark"] .box-detail,
:root[data-theme="dark"] .box-arrow,
:root[data-theme="dark"] .share-card {
  color: #aaa79f;
}

:root[data-theme="dark"] .save-contact {
  border-color: #f5f4ef;
  background: #f5f4ef;
  color: #151513;
}

:root[data-theme="dark"] .contact-box {
  border-color: #3b3a35;
  background: #1d1d1a;
  color: #f5f4ef;
}

:root[data-theme="dark"] .contact-icon-light {
  display: none;
}

:root[data-theme="dark"] .contact-icon-dark {
  display: block;
}

:root[data-theme="dark"] .contact-box:active,
:root[data-theme="dark"] .share-card:active {
  background: #302f2b;
}

:root[data-theme="dark"] .toast {
  border-color: #3b3a35;
  background: #1d1d1a;
  color: #f5f4ef;
}

:root[data-theme="dark"] .lamp-switch {
  color: #aaa79f;
}

:root[data-theme="dark"] .lamp-mount,
:root[data-theme="dark"] .lamp-shade {
  border-color: #625f58;
  background: #373631;
}

:root[data-theme="dark"] .lamp-bulb {
  border-color: #8e8a82;
  background: #ddd8cb;
  box-shadow: 0 0 13px rgba(255, 238, 190, .34);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
  outline: none;
}

@media (max-width: 374px) {
  main {
    width: calc(100% - 48px);
    padding-top: max(56px, env(safe-area-inset-top) + 44px);
  }

  h1 {
    font-size: 52px;
  }

  .save-contact {
    margin-top: 20px;
  }

  .contact-grid {
    gap: 8px;
  }

  .contact-box {
    min-height: 70px;
    padding-inline: 10px;
    gap: 8px;
  }

  .box-label {
    font-size: 13px;
  }

  .box-detail {
    font-size: 9px;
  }

  footer {
    padding-top: 20px;
  }
}

@media (min-width: 600px) {
  main {
    width: min(480px, calc(100% - 72px));
  }

  .lamp-switch {
    top: max(16px, env(safe-area-inset-top) + 8px);
    right: max(24px, env(safe-area-inset-right) + 12px);
  }
}

@media (min-width: 768px) {
  main {
    width: min(500px, calc(100% - 96px));
    padding-top: max(84px, env(safe-area-inset-top) + 68px);
    padding-bottom: max(40px, env(safe-area-inset-bottom) + 28px);
  }

  h1 {
    font-size: 72px;
  }

  .hero-rule {
    margin-top: 28px;
  }

  .save-contact {
    margin-top: 28px;
    min-height: 62px;
  }

  .contact-grid {
    margin-top: 16px;
    gap: 12px;
  }

  .contact-box {
    min-height: 80px;
    padding-inline: 14px;
  }

  footer {
    padding-top: 36px;
    font-size: 11px;
  }

  .lamp-switch {
    width: 64px;
    height: 80px;
    top: max(20px, env(safe-area-inset-top) + 10px);
    right: max(28px, env(safe-area-inset-right) + 16px);
  }

  .lamp-mount { left: 21px; width: 22px; }
  .lamp-wire { left: 31px; height: 26px; }
  .lamp-shade { left: 8px; width: 48px; height: 22px; }
  .lamp-bulb { left: 24px; width: 16px; height: 16px; }
}

@media (min-width: 1024px) {
  main {
    width: min(480px, calc(100% - 128px));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}