:root {
  color-scheme: light dark;
  --paper: #f2f4ef;
  --ink: #171a16;
  --muted: #6f786d;
  --line: #4a5147;
  --signal: #b7ff82;
  --night: #111410;
  --night-ink: #edf2e9;
  --night-muted: #98a394;
  --water: #55c7f2;
  --water-pale: #ddf5ff;
  --font-display: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, monospace;
  --font-body: ui-rounded, "SF Pro Rounded", "Noto Sans TC", "Noto Sans SC", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow: hidden;
  font-family: var(--font-body);
}

button,
input,
textarea,
select {
  font: inherit;
}

.snap-container {
  height: 100svh;
  height: 100dvh;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior-y: contain;
  scroll-snap-type: y mandatory;
}

.screen {
  position: relative;
  min-height: 100svh;
  min-height: 100dvh;
  overflow: hidden;
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

.technical-header {
  position: absolute;
  z-index: 2;
  inset: 2.5rem 3rem auto;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  line-height: 1;
}

.hero {
  cursor: ns-resize;
  background: var(--paper);
  color: var(--ink);
}

.hero .technical-header {
  color: var(--muted);
}

.hero:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: -0.5rem;
}

.error-message {
  position: absolute;
  top: 46%;
  left: 50%;
  width: min(90vw, 35rem);
  transform: translate(-50%, -50%);
  text-align: center;
}

.error-message::before {
  position: absolute;
  z-index: 0;
  top: 46%;
  left: 50%;
  width: min(34rem, 92vw);
  height: 18rem;
  transform: translate(-50%, -50%);
  background: radial-gradient(ellipse, rgb(221 245 255 / 78%), transparent 70%);
  content: "";
  pointer-events: none;
}

.error-message > * {
  position: relative;
  z-index: 1;
}

.wordmark {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: 0;
  line-height: 1;
}

.wordmark-faces {
  width: clamp(9.25rem, 14.45vw, 12.25rem);
  height: auto;
}

.wordmark-type {
  font-size: clamp(4.25rem, 7vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.08em;
}

.error-message h1 {
  margin: 1.4rem 0 0;
  font-size: clamp(1.75rem, 2.5vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.error-message .muted {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.scroll-cue {
  position: absolute;
  bottom: max(1.75rem, env(safe-area-inset-bottom));
  left: 50%;
  display: grid;
  justify-items: center;
  gap: 0.55rem;
  transform: translateX(-50%);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  animation: float 2.4s ease-in-out infinite;
}

.scroll-cue svg {
  width: 0.95rem;
  height: 0.95rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.services {
  display: grid;
  align-items: center;
  padding: clamp(4.5rem, 14.667vh, 8.25rem) clamp(3rem, 7.8vw, 7rem) clamp(3.5rem, 11.556vh, 6.5rem);
  background: var(--night);
  color: var(--night-ink);
}

.services .technical-header {
  color: var(--night-muted);
}

.services-layout {
  display: grid;
  grid-template-columns: minmax(18rem, 0.82fr) minmax(30rem, 1fr);
  gap: clamp(5rem, 10vw, 10rem);
  align-items: start;
  width: 100%;
}

.services-intro h2 {
  max-width: 10ch;
  margin: 0;
  white-space: pre-line;
  font-size: clamp(2.6rem, 4vw, 3.15rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.18;
}

.services-intro p {
  max-width: 32rem;
  margin: 1.35rem 0 0;
  color: var(--night-muted);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.service-list {
  border-bottom: 1px solid var(--line);
}

.service-item {
  display: grid;
  grid-template-columns: 2.2rem 1fr;
  gap: 1.25rem;
  align-items: center;
  min-height: clamp(6.75rem, 21vh, 11.875rem);
  border-top: 1px solid var(--line);
}

.service-number {
  align-self: center;
  color: var(--signal);
  font-family: var(--font-display);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
}

.service-item h3 {
  margin: 0;
  font-size: 1.65rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.service-item p {
  margin: 0.7rem 0 0;
  color: var(--night-muted);
  font-size: 0.8125rem;
  line-height: 1.6;
}

.footer-note {
  position: absolute;
  bottom: max(2.5rem, env(safe-area-inset-bottom));
  left: clamp(3rem, 7.8vw, 7rem);
  margin: 0;
  color: var(--night-muted);
  font-family: var(--font-display);
  font-size: 0.625rem;
  letter-spacing: 0.13em;
}

.contact-link {
  position: absolute;
  right: clamp(3rem, 7.8vw, 7rem);
  bottom: max(2.35rem, env(safe-area-inset-bottom));
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  color: var(--night-ink);
  font-family: var(--font-display);
  font-size: 0.6875rem;
  letter-spacing: 0.07em;
  text-decoration: none;
  transition: color 160ms ease;
}

.contact-link:hover,
.contact-link:focus-visible {
  color: var(--signal);
}

.contact-link:focus-visible {
  outline: 1px solid currentColor;
  outline-offset: 0.4rem;
}

@keyframes float {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, -0.45rem); }
}

@media (max-width: 760px) {
  .technical-header {
    inset: calc(1.65rem + env(safe-area-inset-top)) 1.5rem auto;
    font-size: 0.5625rem;
    letter-spacing: 0.12em;
  }

  .error-message {
    top: 45%;
    width: calc(100% - 3rem);
  }

  .wordmark {
    gap: 0;
  }

  .wordmark-faces {
    width: clamp(8.25rem, 41.25vw, 10.0625rem);
  }

  .wordmark-type {
    font-size: clamp(3.8rem, 19vw, 4.75rem);
  }

  .error-message h1 {
    margin-top: 1.15rem;
    font-size: 1.75rem;
  }

  .error-message .muted {
    margin-top: 0.85rem;
    font-size: 0.8125rem;
  }

  .scroll-cue {
    bottom: max(1.6rem, env(safe-area-inset-bottom));
    font-size: 0.6875rem;
  }

  .services {
    align-items: start;
    padding: calc(clamp(4.75rem, 10.9vh, 5.75rem) + env(safe-area-inset-top)) 1.5rem max(4.25rem, env(safe-area-inset-bottom));
  }

  .services-layout {
    display: block;
  }

  .services-intro h2 {
    font-size: clamp(2.1rem, 9vw, 2.55rem);
  }

  .services-intro p {
    margin-top: 1rem;
    font-size: 0.75rem;
    line-height: 1.65;
  }

  .service-list {
    margin-top: clamp(1.5rem, 5vh, 2.7rem);
  }

  .service-item {
    grid-template-columns: 1.8rem 1fr;
    gap: 0.9rem;
    min-height: clamp(6.5rem, 16vh, 8.4rem);
  }

  .service-number {
    font-size: 0.6rem;
  }

  .service-item h3 {
    font-size: 1.2rem;
  }

  .service-item p {
    margin-top: 0.55rem;
    font-size: 0.7rem;
  }

  .footer-note {
    bottom: max(1.5rem, env(safe-area-inset-bottom));
    left: 1.5rem;
    font-size: 0.46rem;
    letter-spacing: 0.09em;
  }

  .contact-link {
    right: 1.5rem;
    bottom: max(3.7rem, calc(env(safe-area-inset-bottom) + 2.2rem));
    font-size: 0.625rem;
  }
}

@media (max-height: 720px) and (max-width: 760px) {
  .services {
    padding-top: calc(4.25rem + env(safe-area-inset-top));
  }

  .services-intro h2 {
    font-size: 1.85rem;
  }

  .service-list {
    margin-top: 1.4rem;
  }

  .service-item {
    min-height: clamp(5.6rem, 15vh, 6.6rem);
  }
}

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

  .scroll-cue {
    animation: none;
  }
}