:root {
  color-scheme: dark;
  --bg: #0f2a20;
  --surface: #14392c;
  --surface-soft: #1a4736;
  --text: #e6f6ee;
  --text-muted: #b6d9c9;
  --brand: #3ad084;
  --brand-soft: #6ce2a7;
  --line: #2f6250;
  --container: min(1180px, 92vw);
  --radius: 16px;
}

body[data-theme="light"] {
  color-scheme: light;
  --bg: #dbfaed;
  --surface: #ffffff;
  --surface-soft: #ebfff5;
  --text: #10372a;
  --text-muted: #2f5e4a;
  --brand: #11b567;
  --brand-soft: #34ca84;
  --line: #a7dfc4;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  color: var(--text);
  background: linear-gradient(180deg, #12392c 0%, var(--bg) 58%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body[data-theme="light"] {
  background: linear-gradient(180deg, #f2fff8 0%, #dbfaed 58%);
}

html {
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
}

#particles-js {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.95;
}

#particles-js canvas {
  display: block;
}

#root {
  min-height: 100vh;
  opacity: 1;
  transition: opacity 200ms ease;
  position: relative;
  z-index: 1;
}

body.is-loading {
  overflow: hidden;
}

body.is-loading #root {
  opacity: 0;
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
}

.skip-link:focus {
  left: 0.75rem;
  top: 0.75rem;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  color: #081126;
  background: #eef4ff;
}

.site {
  position: relative;
  isolation: isolate;
  min-height: 100vh;
}

.site::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(circle at 22% 12%, rgba(86, 191, 136, 0.2) 0%, transparent 56%),
    radial-gradient(circle at 80% 24%, rgba(54, 193, 181, 0.18) 0%, transparent 58%);
  animation: overlay-float 18s ease-in-out infinite alternate;
}

body[data-theme="light"] .site::before {
  background: radial-gradient(circle at 22% 12%, rgba(72, 181, 118, 0.17) 0%, transparent 56%),
    radial-gradient(circle at 80% 24%, rgba(42, 168, 149, 0.14) 0%, transparent 58%);
}

@keyframes overlay-float {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(0, -2%, 0) scale(1.06); }
}

.site-loader {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: grid;
  place-items: center;
  background: rgba(8, 32, 24, 0.92);
  transition: opacity 280ms ease, visibility 280ms ease;
  z-index: 9999;
}

.site-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-progress {
  width: min(380px, 80vw);
  height: 10px;
  border-radius: 999px;
  border: 1px solid rgba(95, 193, 146, 0.6);
  background: rgba(13, 42, 33, 0.75);
  overflow: hidden;
}

.loader-progress-text {
  margin: 10rem 0 0.55rem;
  font-size: clamp(8.15rem, 2.8vw, 1.65rem);
  font-weight: 500;
  color: #c8f2dc;
  letter-spacing: 0.02em;
}

.loader-progress-fill {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, #34c77f, #7ee5b2);
  transition: width 120ms linear;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid color-mix(in srgb, var(--brand-soft) 26%, transparent);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(12px);
  transition: background 220ms ease, border-color 220ms ease;
}

.topbar-inner {
  width: var(--container);
  margin: 0 auto;
  min-height: 70px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.8rem;
}

.brand {
  font-weight: 750;
  letter-spacing: 0.2px;
}

.nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-contact-item {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.92rem;
  padding: 0.44rem 0.68rem;
  border-radius: 9px;
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0.55rem;
  right: 0.55rem;
  bottom: 0.24rem;
  height: 2px;
  border-radius: 999px;
  background: transparent;
  transition: background 160ms ease;
}

.nav-btn {
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link.is-active {
  color: var(--text);
  background: color-mix(in srgb, var(--brand-soft) 20%, transparent);
}

.nav-link.is-active::after {
  background: var(--brand);
}

.controls {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.84rem;
  color: var(--text-muted);
  min-height: 38px;
}

.lang-switch select {
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 90%, transparent);
  color: var(--text);
  border-radius: 8px;
  padding: 0 0.52rem;
  height: 38px;
  font: inherit;
}

.controls .btn {
  min-height: 38px;
  height: 38px;
  padding-top: 0;
  padding-bottom: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
}

.hero {
  width: var(--container);
  margin: 1.9rem auto 1.15rem;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1rem;
}

.hero-card,
.panel,
.section,
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  box-shadow: 0 0.45rem 0.95rem color-mix(in srgb, var(--bg) 24%, transparent);
  transition: border-color 220ms ease, box-shadow 220ms ease, background 220ms ease;
}

.hero-card {
  padding: clamp(1.15rem, 2.2vw, 1.85rem);
}

.eyebrow {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-soft);
}

.hero-title {
  margin: 0.72rem 0;
  line-height: 1.16;
  letter-spacing: -0.01em;
  font-size: clamp(1.62rem, 3vw, 2.62rem);
}

.hero-summary {
  margin: 0;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 64ch;
}

.hero-actions {
  margin-top: 1.12rem;
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.btn {
  border: 0;
  border-radius: 10px;
  padding: 0.64rem 0.95rem;
  font-weight: 650;
  font-size: 0.88rem;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, background 180ms ease;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: "";
  position: absolute;
  top: 0;
  left: -120%;
  width: 70%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.28), transparent);
  transform: skewX(-18deg);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:hover::after {
  animation: btn-shine 760ms ease;
}

@keyframes btn-shine {
  from { left: -120%; }
  to { left: 140%; }
}

.btn-primary {
  color: #062315;
  background: linear-gradient(180deg, #58d697, #2bc37a);
}

.btn-secondary {
  color: var(--text);
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface-soft) 90%, transparent);
}

.hero-metrics {
  padding: 1rem;
  display: grid;
  gap: 0.72rem;
}

.metric {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--surface-soft) 92%, transparent);
  padding: 0.9rem;
  animation: fade-up 560ms ease both;
}

.metric:nth-child(2) { animation-delay: 70ms; }
.metric:nth-child(3) { animation-delay: 130ms; }

@keyframes fade-up {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.metric-name {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.metric-value {
  margin: 0.3rem 0 0;
  font-size: 1.1rem;
  font-weight: 700;
}

main {
  width: var(--container);
  margin: 0 auto;
  padding-bottom: 2.4rem;
}

.page-content {
  display: grid;
  gap: 1rem;
  animation: page-in 380ms ease;
}

@keyframes page-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.section {
  padding: clamp(1rem, 1.85vw, 1.45rem);
  content-visibility: auto;
  contain-intrinsic-size: 420px;
}

.section:hover {
  border-color: color-mix(in srgb, var(--brand-soft) 38%, var(--line));
}

.section-title {
  margin: 0;
  font-size: 1.22rem;
}

.section-subtitle {
  margin: 0.4rem 0 0.92rem;
  color: var(--text-muted);
  line-height: 1.72;
}

.fact-list {
  margin: 0;
  padding: 0 0 0 1.05rem;
  display: grid;
  gap: 0.54rem;
  color: var(--text-muted);
}

.card-grid,
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.86rem;
}

.card-grid--cards {
  align-items: stretch;
}

.card {
  padding: 0.9rem;
  height: 100%;
  position: relative;
  overflow: hidden;
  transition: border-color 220ms ease, box-shadow 220ms ease, background 220ms ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(68, 201, 140, 0.1), rgba(68, 201, 140, 0));
  opacity: 0;
  transition: opacity 220ms ease;
  pointer-events: none;
}

.card-float {
  transition: transform 240ms ease, box-shadow 240ms ease;
}

.card-float:hover {
  transform: translateY(-3px);
  box-shadow: 0 0.9rem 1.2rem color-mix(in srgb, var(--bg) 30%, transparent);
}

.card:hover {
  border-color: color-mix(in srgb, var(--brand-soft) 60%, var(--line));
  background: color-mix(in srgb, var(--surface-soft) 88%, transparent);
  box-shadow: 0 0.9rem 1.35rem color-mix(in srgb, var(--brand) 14%, var(--bg));
}

.card:hover::before {
  opacity: 1;
}

.card-title {
  margin: 0;
  font-size: 1rem;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.card-year {
  font-size: 0.74rem;
  color: var(--brand-soft);
  border: 1px solid color-mix(in srgb, var(--brand) 35%, var(--line));
  border-radius: 999px;
  padding: 0.16rem 0.5rem;
  line-height: 1;
}

.card-copy {
  margin: 0.5rem 0 0.65rem;
  color: var(--text-muted);
  line-height: 1.65;
  font-size: 0.9rem;
}

.iframe-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: color-mix(in srgb, var(--bg) 66%, transparent);
  aspect-ratio: 16 / 10;
  min-height: 220px;
}

.iframe-card iframe {
  width: 200%;
  height: 200%;
  border: 0;
  display: block;
  transform: scale(0.5);
  transform-origin: top left;
}

.iframe-card--equal {
  height: 300px;
  min-height: 300px;
  aspect-ratio: auto;
}

.iframe-card--fit iframe {
  width: 100%;
  height: 100%;
  transform: none;
}

.skill-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
  align-items: start;
}

.skill-bars {
  display: grid;
  gap: 0.66rem;
}

.skill-row {
  display: grid;
  grid-template-columns: 150px 1fr 48px;
  gap: 0.6rem;
  align-items: center;
  opacity: 0;
  transform: translateY(10px);
}

.reveal.is-visible .skill-row {
  animation: skill-row-in 500ms ease forwards;
}

.reveal.is-visible .skill-row:nth-child(2) {
  animation-delay: 50ms;
}

.reveal.is-visible .skill-row:nth-child(3) {
  animation-delay: 100ms;
}

.reveal.is-visible .skill-row:nth-child(4) {
  animation-delay: 150ms;
}

.reveal.is-visible .skill-row:nth-child(5) {
  animation-delay: 200ms;
}

.reveal.is-visible .skill-row:nth-child(6) {
  animation-delay: 250ms;
}

.reveal.is-visible .skill-row:nth-child(7) {
  animation-delay: 300ms;
}

@keyframes skill-row-in {
  0% {
    opacity: 0;
    transform: translateY(10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.skill-name {
  font-size: 0.89rem;
  color: var(--text-muted);
}

.skill-track {
  height: 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border: 1px solid var(--line);
  overflow: hidden;
}

.skill-fill {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, #2dc77d, #7be8b2);
  position: relative;
  overflow: hidden;
}

.reveal.is-visible .skill-fill {
  animation: skill-grow 980ms cubic-bezier(0.2, 0.75, 0.26, 1) forwards;
}

.skill-fill::after {
  content: "";
  position: absolute;
  top: -60%;
  left: -25%;
  width: 24%;
  height: 220%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.42), transparent);
  transform: skewX(-22deg);
}

.reveal.is-visible .skill-fill::after {
  animation: skill-shine 1100ms ease 1 both;
}

@keyframes skill-shine {
  0% {
    left: -30%;
  }
  100% {
    left: 118%;
  }
}

@keyframes skill-grow {
  0% {
    width: 0;
  }
  100% {
    width: var(--skill-target, 0%);
  }
}

.skill-score {
  text-align: right;
  color: var(--brand-soft);
  font-size: 0.84rem;
}

.capability-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.92rem;
  background: color-mix(in srgb, var(--surface-soft) 92%, transparent);
}

.capability-title {
  margin: 0 0 0.64rem;
  font-size: 0.95rem;
}

.capability-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
}

.cap-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.58rem;
  background: color-mix(in srgb, var(--surface) 95%, transparent);
  opacity: 0;
  transform: translateY(8px) scale(0.98);
}

.reveal.is-visible .cap-item {
  animation: cap-rise 460ms ease forwards;
}

@keyframes cap-rise {
  0% {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.cap-name {
  margin: 0;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.cap-level {
  margin: 0.3rem 0 0;
  font-size: 0.89rem;
  font-weight: 650;
}

.tab-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.95rem;
  flex-wrap: wrap;
}

.tab-btn {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.42rem 0.95rem;
  background: color-mix(in srgb, var(--surface-soft) 88%, transparent);
  color: var(--text-muted);
  font-size: 0.88rem;
  cursor: pointer;
  transition: transform 180ms ease, color 180ms ease, background 180ms ease;
}

.tab-btn:hover,
.tab-btn:focus-visible {
  transform: translateY(-1px);
  color: var(--text);
}

.tab-btn.is-active {
  color: #07241a;
  background: linear-gradient(180deg, #69d89f, #39c886);
}

.tags {
  margin-top: 0.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  font-size: 0.78rem;
  color: var(--text-muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.52rem;
}

.card-actions {
  margin-top: 0.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.portfolio-media {
  margin-top: 0.5rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  height: 238px;
  min-height: 238px;
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.portfolio-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.74rem;
}

.timeline li {
  border-left: 2px solid color-mix(in srgb, var(--brand-soft) 58%, transparent);
  padding-left: 0.7rem;
}

.timeline-item-rich {
  background: color-mix(in srgb, var(--surface-soft) 80%, transparent);
  border: 1px solid var(--line);
  border-left: 2px solid color-mix(in srgb, var(--brand-soft) 58%, transparent);
  border-radius: 10px;
  padding: 0.68rem 0.74rem;
}

.time-title {
  margin: 0;
  font-weight: 600;
}

.time-copy {
  margin: 0.24rem 0 0;
  color: var(--text-muted);
  line-height: 1.65;
}

.time-copy-list {
  display: grid;
  gap: 0.2rem;
}

.time-copy-list .time-copy {
  margin: 0;
}

.contact-list {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.contact-list--grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.contact-list--grid li {
  display: flex;
}

.contact-link {
  color: var(--brand);
}

.contact-link-btn {
  display: inline-flex;
  width: 100%;
  min-height: 42px;
  padding: 0.66rem 0.9rem;
  justify-content: center;
  align-items: center;
}

.contact-form {
  display: grid;
  gap: 0.7rem;
}

.form-row {
  display: grid;
  gap: 0.36rem;
}

.form-row span {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.form-row input,
.form-row textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.62rem 0.72rem;
  background: color-mix(in srgb, var(--surface-soft) 95%, transparent);
  color: var(--text);
  font: inherit;
}

.form-row input:focus,
.form-row textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--brand-soft) 44%, transparent);
}

.footer {
  width: var(--container);
  margin: 2rem auto 2.5rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.footer a {
  color: var(--brand);
  font-weight: 600;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 420ms ease, transform 420ms ease;
}

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

@media (max-width: 1120px) {
  .topbar-inner {
    grid-template-columns: 1fr;
    gap: 0.5rem;
    padding: 0.6rem 0;
  }

  .nav-list,
  .controls {
    justify-content: flex-start;
  }

  .hero,
  .skill-layout,
  .card-grid,
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 740px) {
  .nav-list,
  .tab-list {
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: thin;
  }

  .hero-actions {
    width: 100%;
  }

  .btn {
    min-width: 126px;
    flex: 1;
    text-align: center;
  }

  .controls {
    width: 100%;
    align-items: stretch;
    gap: 0.45rem;
  }

  .controls .lang-switch {
    flex: 1 1 auto;
    min-height: 38px;
  }

  .controls .lang-switch span {
    white-space: nowrap;
  }

  .controls .lang-switch select {
    flex: 1;
    min-width: 108px;
  }

  .controls .btn {
    flex: 0 0 auto;
    min-width: 110px;
  }

  .skill-row {
    grid-template-columns: 116px 1fr 38px;
    gap: 0.45rem;
  }

  .iframe-card iframe {
    width: 400%;
    height: 400%;
    transform: scale(0.25);
  }

  .iframe-card--fit iframe {
    width: 100%;
    height: 100%;
    transform: none;
  }

  .portfolio-media {
    height: 210px;
    min-height: 210px;
  }

  .contact-list--grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 430px) {
  .hero-title {
    font-size: 1.44rem;
  }

  .section-title {
    font-size: 1.1rem;
  }

  .skill-row {
    grid-template-columns: 88px 1fr 34px;
  }

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

  .nav-contact-item {
    gap: 0.2rem;
  }

  .section,
  .card,
  .hero-card {
    border-radius: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

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