:root {
  --bg: #f0fdf4;
  --surface: #ffffff;
  --muted: #64748b;
  --text: #1e293b;
  --primary: #00d4aa;
  --primary-dark: #059669;
  --card: rgba(0, 212, 170, 0.05);
  --shadow-light: rgba(0, 212, 170, 0.1);
  --shadow-medium: rgba(0, 212, 170, 0.15);
  --shadow-strong: rgba(0, 212, 170, 0.25);
  font-family: 'Space Grotesk', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* 禁用可能导致花屏和灰屏的硬件加速 */
* {
  -webkit-transform: translateZ(0);
  -moz-transform: translateZ(0);
  -ms-transform: translateZ(0);
  -o-transform: translateZ(0);
  transform: translateZ(0);
  -webkit-backface-visibility: hidden;
  -moz-backface-visibility: hidden;
  -ms-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-perspective: 1000px;
  -moz-perspective: 1000px;
  -ms-perspective: 1000px;
  perspective: 1000px;
}

/* 动画关键帧定义 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes animateIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulseOnce {
  0% {
    box-shadow: 0 10px 30px rgba(0, 212, 170, 0.4);
  }
  50% {
    box-shadow: 0 15px 40px rgba(0, 212, 170, 0.6);
  }
  100% {
    box-shadow: 0 10px 30px rgba(0, 212, 170, 0.4);
  }
}

body {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem clamp(1rem, 4vw, 4rem);
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(0, 212, 170, 0.2);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.brand small {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--muted);
}

nav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.95rem;
  color: var(--text);
}

nav a:hover {
  color: var(--text);
}

nav a {
  position: relative;
  padding-bottom: 0.2rem;
}

nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), #4ade80);
  opacity: 0;
  transition: opacity 0.25s ease;
}

nav a:hover::after {
  opacity: 1;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.3rem;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(0, 212, 170, 0.3);
  background: transparent;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  transition: opacity 0.25s ease;
}

.site-header.is-open .menu-toggle span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.site-header.is-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}

.site-header.is-open .menu-toggle span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 3rem;
  padding: 4rem clamp(1.5rem, 5vw, 6rem);
  align-items: center;
}

.hero__text {
  animation: slideInLeft 1s ease-out 0.3s both;
}

.hero__media {
  animation: slideInRight 1s ease-out 0.6s both;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 0.8rem;
  color: var(--primary);
  margin-bottom: 0.6rem;
}

h1 {
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  line-height: 1.1;
  margin-bottom: 1rem;
  animation: fadeInUp 1s ease-out 0.2s both;
}

.lead {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
  animation: fadeIn 1s ease-out 0.5s both;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
  animation: fadeIn 1s ease-out 0.7s both;
}

.btn {
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: box-shadow 0.2s ease, background 0.2s ease;
}

.btn--primary {
  background: linear-gradient(120deg, #00d4aa, #4ade80);
  color: #ffffff;
  box-shadow: 0 10px 30px rgba(0, 212, 170, 0.4);
}

.btn--primary:hover {
  box-shadow: 0 15px 35px rgba(0, 212, 170, 0.5);
  transform: translateY(-1px);
}

.btn--ghost {
  border-color: rgba(0, 212, 170, 0.3);
  color: var(--primary);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.08);
}


.hero__metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}

.hero__metrics span {
  font-size: 2rem;
  font-weight: 600;
  color: var(--primary);
}

.hero__media {
  position: relative;
  background: var(--surface);
  border-radius: 32px;
  padding: 2rem;
  border: 1px solid rgba(0, 212, 170, 0.2);
  box-shadow: 0 8px 16px rgba(0, 212, 170, 0.15);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  overflow: hidden;
}

.hero__badge {
  align-self: flex-end;
  background: rgba(0, 212, 170, 0.15);
  color: var(--primary);
  padding: 0.35rem 1rem;
  border-radius: 999px;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

.hero__media-card {
  background: rgba(0, 212, 170, 0.05);
  border-radius: 20px;
  padding: 1.25rem;
  border: 1px solid rgba(0, 212, 170, 0.2);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  transition: border-color 0.3s ease;
}

.hero__media-card:hover {
  border-color: rgba(0, 212, 170, 0.3);
}

.hero__media-card ul {
  list-style: none;
  color: var(--muted);
  margin-top: 0.6rem;
}

.hero__visual {
  position: relative;
  background: rgba(0, 212, 170, 0.03);
  border-radius: 24px;
  padding: 1.5rem;
  border: 1px solid rgba(0, 212, 170, 0.2);
}

.hero__visual::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 24px;
  pointer-events: none;
}

.hero__visual-label {
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.8rem;
}

.hero__chips span {
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(0, 212, 170, 0.3);
  font-size: 0.85rem;
  color: var(--text);
}

.hero__media-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.75rem;
}

.hero__media-stats strong {
  font-size: 1.4rem;
}

.hero__media-stats span {
  font-size: 0.85rem;
  color: var(--muted);
}

main {
  padding: 0 clamp(1.5rem, 4vw, 6rem) 4rem;
}

.section {
  padding: 4rem 0;
  border-bottom: 1px solid rgba(0, 212, 170, 0.1);
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.section.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.section--accent {
  background: rgba(0, 212, 170, 0.03);
  border-radius: 36px;
  margin: 3rem 0;
  padding: 4rem clamp(1rem, 4vw, 3rem);
}

.section__intro {
  max-width: 760px;
  margin-bottom: 2rem;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.card {
  background: var(--card);
  border: 1px solid rgba(0, 212, 170, 0.2);
  border-radius: 20px;
  padding: 1.6rem;
  min-height: 190px;
  transition: all 0.3s ease;
  animation: fadeInUp 0.8s ease-out both;
  animation-delay: calc(var(--card-index, 0) * 0.1s);
}

.card:hover {
  background: rgba(0, 212, 170, 0.08);
  border-color: rgba(0, 212, 170, 0.4);
  box-shadow: 0 8px 25px var(--shadow-medium);
  transform: translateY(-2px);
}

.card.animate-in {
  animation: animateIn 0.8s ease-out forwards;
}

.timeline--wide {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.timeline--wide article {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(0, 212, 170, 0.2);
  border-radius: 20px;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.timeline--wide span {
  display: inline-block;
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

.timeline--wide article::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.timeline--wide article:hover::after {
  opacity: 1;
}

.portfolio {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.portfolio__item {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.75rem;
  border-radius: 24px;
  border: 1px solid rgba(0, 212, 170, 0.2);
  background: rgba(255, 255, 255, 0.9);
  transition: all 0.3s ease;
  animation: fadeInUp 0.8s ease-out both;
  animation-delay: calc(var(--item-index, 0) * 0.15s);
}

.portfolio__item:hover {
  border-color: rgba(0, 212, 170, 0.4);
  box-shadow: 0 12px 30px var(--shadow-strong);
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.95);
}

.portfolio__item.animate-in {
  animation: animateIn 0.8s ease-out forwards;
}

.btn.pulse-once {
  animation: pulseOnce 2s ease-in-out 1;
}

.portfolio__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pill {
  padding: 0.25rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(0, 212, 170, 0.3);
  font-size: 0.85rem;
  color: var(--primary);
}

.portfolio__body h3 {
  margin-bottom: 0.4rem;
}

.portfolio__details {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.6rem;
  padding: 0;
  margin-top: 0.8rem;
  color: var(--muted);
}

.portfolio__details li {
  padding-left: 1rem;
  position: relative;
}

.portfolio__details li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

.culture {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  align-items: center;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  color: var(--muted);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  display: inline-block;
  margin-right: 0.75rem;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
}

.culture__media {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.culture__panel {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 24px;
  padding: 1.8rem;
  border: 1px solid rgba(0, 212, 170, 0.2);
}

.culture__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.8rem 0 1.2rem;
}

.culture__tags span {
  padding: 0.35rem 0.9rem;
  border-radius: 12px;
  border: 1px solid rgba(0, 212, 170, 0.3);
  font-size: 0.85rem;
  color: var(--text);
}

.culture__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.8rem;
}

.culture__grid div {
  background: rgba(0, 212, 170, 0.05);
  border-radius: 16px;
  padding: 0.9rem;
  border: 1px solid rgba(0, 212, 170, 0.2);
}

.culture__grid strong {
  font-size: 1.4rem;
}

.culture__grid span {
  font-size: 0.85rem;
  color: var(--muted);
}

.culture__quote {
  background: rgba(0, 212, 170, 0.05);
  border-radius: 18px;
  padding: 1.25rem;
  font-style: italic;
  color: var(--text);
}

.contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  align-items: center;
}

.contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.contact__card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 24px;
  padding: 2rem;
  border: 1px solid rgba(0, 212, 170, 0.2);
  box-shadow: 0 8px 16px rgba(0, 212, 170, 0.15);
}

.contact__card ul {
  list-style: none;
  color: var(--muted);
  margin-top: 1rem;
}

.footer {
  padding: 2.5rem clamp(1.5rem, 4vw, 6rem);
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .site-header {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    text-align: left;
  }

  nav {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    background: rgba(255, 255, 255, 0.95);
    padding: 1rem;
    border-radius: 16px;
    border: 1px solid rgba(0, 212, 170, 0.2);
  }

  .site-header.is-open nav {
    display: flex;
    width: 100%;
  }

  .menu-toggle {
    display: flex;
  }

  .brand {
    flex: 1;
  }

  .hero {
    padding-top: 3rem;
  }
}


.hero__visual::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 24px;
  pointer-events: none;
}