:root {
  color-scheme: dark;
  --ink: #f7fbff;
  --soft-ink: #d8e2ec;
  --muted: #9ba8b7;
  --line: rgba(255, 255, 255, 0.15);
  --panel: rgba(8, 14, 21, 0.62);
  --cyan: #67e8ff;
  --blue: #5d7cff;
  --mint: #8df6ce;
  --rose: #ff7bc7;
  --bg: #07090d;
  font-family:
    Inter, "Noto Sans TC", "Microsoft JhengHei", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 78% 12%, rgba(103, 232, 255, 0.2), transparent 30rem),
    radial-gradient(circle at 10% 76%, rgba(255, 123, 199, 0.13), transparent 24rem),
    linear-gradient(145deg, #05070b 0%, #0e141c 48%, #050609 100%);
  color: var(--ink);
  min-width: 320px;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.site-shell {
  overflow: hidden;
}

.section-parallax {
  --section-parallax: 0px;
  position: relative;
  overflow: hidden;
}

.intro-band::before,
.feature-band::before,
.experience-section::before,
.design-story::before,
.spec-section::before,
.closing-cta::before {
  content: "";
  position: absolute;
  inset: -18%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 18% 24%, rgba(103, 232, 255, 0.12), transparent 22rem),
    radial-gradient(circle at 82% 70%, rgba(255, 123, 199, 0.09), transparent 24rem),
    linear-gradient(112deg, transparent 0 42%, rgba(255, 255, 255, 0.045) 48%, transparent 56%);
  transform: translate3d(0, var(--section-parallax), 0);
  transition: transform 80ms linear;
  will-change: transform;
}

.intro-band > *,
.feature-band > article,
.experience-section > *,
.design-story > *,
.spec-section > *,
.closing-cta > * {
  position: relative;
  z-index: 1;
}

.reveal {
  opacity: 0;
  transform: translate3d(0, 2rem, 0);
  transition:
    opacity 720ms ease,
    transform 720ms cubic-bezier(0.2, 0.8, 0.2, 1);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.hero .nav,
.hero .hero-content,
.hero .control-panel,
.hero .metrics {
  transition:
    opacity 760ms ease,
    transform 760ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.hero .scanline {
  transform: translate3d(0, calc(var(--section-parallax) * 0.22), 0);
}

.hero {
  position: relative;
  min-height: 92vh;
  isolation: isolate;
  display: grid;
  align-items: center;
  padding: 7.4rem clamp(1.2rem, 4vw, 5rem) 8.6rem;
}

#laptop-scene {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: -4;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    radial-gradient(circle at 58% 44%, rgba(68, 108, 255, 0.15), transparent 34rem);
  background-size: 76px 76px, 76px 76px, auto;
  cursor: grab;
}

#laptop-scene:active {
  cursor: grabbing;
}

.scene-vignette {
  position: absolute;
  inset: 0;
  z-index: -3;
  background:
    linear-gradient(90deg, rgba(3, 5, 9, 0.86) 0%, rgba(3, 5, 9, 0.5) 34%, rgba(3, 5, 9, 0.08) 64%, rgba(3, 5, 9, 0.74) 100%),
    linear-gradient(0deg, rgba(3, 5, 9, 0.9) 0%, transparent 26%, transparent 68%, rgba(3, 5, 9, 0.82) 100%);
  pointer-events: none;
}

.scanline {
  position: absolute;
  inset: 0;
  z-index: -2;
  opacity: 0.32;
  pointer-events: none;
  background:
    linear-gradient(transparent 0 50%, rgba(255, 255, 255, 0.04) 50% 100%),
    linear-gradient(105deg, transparent 0 44%, rgba(103, 232, 255, 0.16) 48%, transparent 54%);
  background-size: 100% 4px, 260% 100%;
  animation: sweep 7s linear infinite;
}

.cursor-light {
  position: absolute;
  width: 28rem;
  height: 28rem;
  border-radius: 50%;
  z-index: -1;
  left: var(--x, 65%);
  top: var(--y, 35%);
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(103, 232, 255, 0.18), transparent 66%);
  filter: blur(12px);
  pointer-events: none;
  transition: opacity 180ms ease;
}

.nav {
  position: absolute;
  inset: 0 0 auto;
  height: 5.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0 clamp(1.2rem, 4vw, 5rem);
  z-index: 5;
}

.brand,
.nav-links,
.nav-action,
.control-panel,
.metrics {
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 750;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  color: #061015;
  background: linear-gradient(135deg, #f7fbff, #7fdfff);
  box-shadow: 0 0 2rem rgba(103, 232, 255, 0.28);
  font-size: 0.88rem;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.32rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.055);
}

.nav-links a {
  padding: 0.56rem 0.9rem;
  border-radius: 999px;
  color: rgba(247, 251, 255, 0.72);
  font-size: 0.95rem;
  transition: color 180ms ease, background 180ms ease;
}

.nav-links a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.nav-action,
.primary-action,
.ghost-action {
  min-height: 2.7rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.nav-action {
  background: rgba(255, 255, 255, 0.08);
}

.hero-content {
  width: min(35rem, 100%);
  position: relative;
  z-index: 3;
  margin-top: -0.8rem;
}

.eyebrow,
.section-kicker {
  margin: 0;
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 0.95rem 0 0;
  max-width: 10em;
  font-size: clamp(2.45rem, 5vw, 5rem);
  line-height: 1.04;
  letter-spacing: 0;
  text-wrap: balance;
  text-shadow: 0 0 2.6rem rgba(103, 232, 255, 0.16);
}

.hero-copy {
  width: min(30rem, 100%);
  margin: 1.3rem 0 0;
  color: var(--soft-ink);
  font-size: clamp(1rem, 1.2vw, 1.12rem);
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.78rem;
  margin-top: 1.8rem;
}

.primary-action {
  color: #061015;
  border: 0;
  background: linear-gradient(135deg, #ffffff, #67e8ff 54%, #8df6ce);
  box-shadow: 0 0.9rem 2.5rem rgba(103, 232, 255, 0.22);
  font-weight: 800;
}

.ghost-action {
  color: #fff;
  background: rgba(255, 255, 255, 0.07);
  cursor: pointer;
}

.control-panel {
  position: absolute;
  right: clamp(1.2rem, 4vw, 5rem);
  bottom: 8.1rem;
  z-index: 4;
  width: min(24rem, calc(100% - 2.4rem));
  padding: 0.95rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 1.5rem 5rem rgba(0, 0, 0, 0.28);
}

.panel-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.panel-row + .panel-row {
  margin-top: 0.82rem;
}

.panel-label {
  color: rgba(247, 251, 255, 0.68);
  font-size: 0.75rem;
  font-weight: 850;
  text-transform: uppercase;
}

.swatches,
.mode-tabs {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.swatch {
  width: 1.9rem;
  height: 1.9rem;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 50%;
  background: var(--swatch);
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.swatch:nth-child(1) {
  --swatch: linear-gradient(135deg, #f2f6f8, #77858d);
}

.swatch:nth-child(2) {
  --swatch: linear-gradient(135deg, #676f79, #12161d);
}

.swatch:nth-child(3) {
  --swatch: linear-gradient(135deg, #efeee7, #8c8b84);
}

.swatch:hover,
.swatch.is-active {
  transform: translateY(-2px);
  box-shadow: 0 0 1.4rem rgba(103, 232, 255, 0.34);
}

.mode-tab {
  min-width: 3.8rem;
  height: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  color: rgba(247, 251, 255, 0.68);
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
}

.mode-tab.is-active {
  color: #061015;
  background: #f7fbff;
}

.metrics {
  position: absolute;
  left: clamp(1.2rem, 4vw, 5rem);
  right: clamp(1.2rem, 4vw, 5rem);
  bottom: 1.05rem;
  z-index: 4;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.055);
}

.metrics div {
  padding: 0.92rem clamp(0.8rem, 2vw, 1.35rem);
}

.metrics div + div {
  border-left: 1px solid var(--line);
}

.metrics strong,
.metrics span {
  display: block;
}

.metrics strong {
  font-size: clamp(1.38rem, 2.4vw, 2.15rem);
  line-height: 1;
}

.metrics span {
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.loader {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  gap: 1rem;
  align-content: center;
  background:
    radial-gradient(circle at 50% 45%, rgba(103, 232, 255, 0.15), transparent 20rem),
    rgba(5, 7, 11, 0.94);
  transition: opacity 360ms ease, visibility 360ms ease;
}

.loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.loader.loader-hint {
  padding: 2rem;
  text-align: center;
}

.loader.loader-hint #loader-text {
  display: grid;
  gap: 0.85rem;
  justify-items: center;
  max-width: 28rem;
  color: var(--soft-ink);
  line-height: 1.65;
}

.loader.loader-hint strong {
  color: var(--ink);
  font-size: 1.25rem;
  line-height: 1.3;
}

.loader.loader-hint a {
  min-height: 2.7rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0 1.1rem;
  color: #061015;
  background: linear-gradient(135deg, #ffffff, #67e8ff 54%, #8df6ce);
  font-weight: 800;
}

.loader-ring {
  width: 4.4rem;
  height: 4.4rem;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-top-color: var(--cyan);
  box-shadow: 0 0 2rem rgba(103, 232, 255, 0.28);
  animation: spin 900ms linear infinite;
}

.intro-band,
.experience-section,
.design-story,
.spec-section,
.closing-cta {
  padding: clamp(4.5rem, 8vw, 8rem) clamp(1.2rem, 5vw, 6rem);
}

.intro-band {
  display: grid;
  grid-template-columns: minmax(12rem, 0.68fr) minmax(18rem, 1fr) minmax(18rem, 0.9fr);
  gap: clamp(1.8rem, 4vw, 5rem);
  align-items: start;
  background: linear-gradient(180deg, rgba(8, 13, 19, 0.98), rgba(12, 18, 26, 0.98));
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.intro-band h2,
.section-heading h2,
.design-story h2,
.closing-cta h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(2rem, 4vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: 0;
  text-wrap: balance;
}

.intro-band p,
.design-story p,
.closing-cta p {
  margin: 0;
  color: var(--muted);
  font-size: 1.03rem;
  line-height: 1.85;
}

.feature-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, 0.12);
}

.feature-band article {
  min-height: 17rem;
  padding: clamp(2rem, 4vw, 4rem);
  background: linear-gradient(180deg, rgba(14, 20, 28, 0.98), rgba(6, 8, 12, 0.98));
}

.feature-band span,
.scenario-gallery span,
.experience-grid span,
.spec-grid span {
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.feature-band h2 {
  margin: 1.2rem 0 0;
  font-size: clamp(1.45rem, 2.2vw, 2.15rem);
  letter-spacing: 0;
}

.feature-band p {
  margin: 1rem 0 0;
  color: var(--muted);
  line-height: 1.8;
  max-width: 28rem;
}

.experience-section {
  background:
    radial-gradient(circle at 18% 28%, rgba(93, 124, 255, 0.18), transparent 26rem),
    linear-gradient(180deg, #090f16, #06080c);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(12rem, 0.38fr) minmax(18rem, 0.82fr);
  gap: clamp(1.6rem, 4vw, 4rem);
  align-items: end;
  margin-bottom: clamp(2rem, 5vw, 4.5rem);
}

.scenario-gallery {
  display: grid;
  grid-template-columns: 1.12fr 0.94fr 0.94fr;
  gap: 1px;
  margin-bottom: clamp(2rem, 4vw, 4rem);
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.scenario-gallery article {
  position: relative;
  min-height: clamp(24rem, 36vw, 35rem);
  overflow: hidden;
  background: #070b10;
  isolation: isolate;
}

.scenario-gallery img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: translate3d(0, var(--parallax-y, 0px), 0) scale(1.12);
  filter: saturate(0.96) contrast(1.04);
  will-change: transform;
}

.scenario-gallery article::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, transparent 20%, rgba(4, 7, 11, 0.14) 45%, rgba(4, 7, 11, 0.88) 100%),
    linear-gradient(90deg, rgba(4, 7, 11, 0.28), transparent 55%);
}

.scenario-gallery div {
  position: absolute;
  left: clamp(1.25rem, 3vw, 2.2rem);
  right: clamp(1.25rem, 3vw, 2.2rem);
  bottom: clamp(1.25rem, 3vw, 2.2rem);
  z-index: 1;
}

.scenario-gallery h3 {
  margin: 0.8rem 0 0;
  font-size: clamp(1.45rem, 2vw, 2rem);
  line-height: 1.16;
  text-wrap: balance;
}

.scenario-gallery p {
  max-width: 28rem;
  margin: 0.8rem 0 0;
  color: rgba(232, 240, 248, 0.78);
  line-height: 1.7;
}

.experience-grid,
.spec-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, 0.13);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.experience-grid article,
.spec-grid div {
  min-height: 18rem;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  background: rgba(8, 13, 20, 0.94);
}

.experience-grid h3,
.spec-grid strong {
  display: block;
  margin: 1rem 0 0;
  color: var(--ink);
  font-size: clamp(1.22rem, 1.7vw, 1.62rem);
  line-height: 1.25;
}

.experience-grid p,
.spec-grid p {
  margin: 1rem 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.design-story {
  display: grid;
  grid-template-columns: minmax(20rem, 0.9fr) minmax(18rem, 0.82fr);
  gap: clamp(2rem, 6vw, 7rem);
  align-items: center;
  background:
    linear-gradient(120deg, rgba(247, 251, 255, 0.04), transparent 46%),
    #0c1118;
}

.design-story h2 {
  margin-top: 1rem;
}

.design-story p {
  margin-top: 1.2rem;
  max-width: 42rem;
}

.detail-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--line);
}

.detail-list li {
  display: grid;
  grid-template-columns: minmax(8rem, 0.52fr) 1fr;
  gap: 1rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}

.detail-list strong {
  color: var(--ink);
}

.detail-list span {
  color: var(--muted);
  line-height: 1.65;
}

.spec-section {
  background:
    radial-gradient(circle at 82% 14%, rgba(103, 232, 255, 0.14), transparent 27rem),
    linear-gradient(180deg, #070a0f, #0d131b);
}

.closing-cta {
  min-height: 30rem;
  display: grid;
  place-items: center;
  text-align: center;
  background:
    radial-gradient(circle at 50% 22%, rgba(141, 246, 206, 0.16), transparent 24rem),
    linear-gradient(180deg, #0d131b, #050609);
}

.closing-cta h2 {
  margin-top: 1rem;
  max-width: 12em;
}

.closing-cta p {
  max-width: 42rem;
  margin-top: 1.2rem;
}

.closing-cta .primary-action {
  margin-top: 2rem;
}

@keyframes sweep {
  to {
    background-position: 0 0, 260% 0;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 1040px) {
  .intro-band,
  .section-heading,
  .design-story {
    grid-template-columns: 1fr;
  }

  .scenario-gallery,
  .experience-grid,
  .spec-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scenario-gallery article:first-child {
    grid-column: span 2;
  }
}

@media (max-width: 900px) {
  .hero {
    min-height: auto;
    padding-top: 6.5rem;
    padding-bottom: 2.4rem;
    align-items: start;
    display: block;
  }

  .nav {
    height: auto;
    padding-top: 1rem;
    flex-wrap: wrap;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }

  .nav-links a {
    flex: 1;
    text-align: center;
    padding-inline: 0.7rem;
  }

  .hero-content {
    margin-top: 3rem;
    width: min(32rem, 100%);
  }

  .control-panel {
    position: relative;
    inset: auto;
    width: min(24rem, 100%);
    margin-top: 1.2rem;
  }

  .metrics {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    margin-top: 1.1rem;
  }

  .feature-band {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .hero {
    padding-inline: 1rem;
    padding-bottom: 2rem;
  }

  h1 {
    font-size: clamp(2.15rem, 10vw, 3.2rem);
    max-width: 9.8em;
  }

  .hero-copy {
    font-size: 0.98rem;
  }

  .nav-action {
    display: none;
  }

  .control-panel {
    position: relative;
    inset: auto;
    width: 100%;
  }

  .panel-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.7rem;
  }

  .metrics {
    grid-template-columns: 1fr;
  }

  .metrics div + div {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .scenario-gallery,
  .experience-grid,
  .spec-grid {
    grid-template-columns: 1fr;
  }

  .scenario-gallery article:first-child {
    grid-column: auto;
  }

  .scenario-gallery article {
    min-height: 26rem;
  }

  .detail-list li {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
  }

  .scenario-gallery img {
    transform: scale(1.02);
  }

  .intro-band::before,
  .feature-band::before,
  .experience-section::before,
  .design-story::before,
  .spec-section::before,
  .closing-cta::before {
    transform: none;
  }
}