/* ================================================================
   WEIZHILINGYU AI — Design System
   Theme: Deep Tech / Avant-Garde
   ================================================================ */

/* ---- Design Tokens ---- */
:root {
  --void:        #03030a;
  --deep:        #07070f;
  --surface:     rgba(255, 255, 255, 0.028);
  --surface-h:   rgba(255, 255, 255, 0.055);
  --border:      rgba(255, 255, 255, 0.07);
  --border-h:    rgba(167, 139, 250, 0.4);

  --violet:      #7c3aed;
  --violet-mid:  #8b5cf6;
  --violet-soft: #a78bfa;
  --cyan:        #06b6d4;
  --cyan-bright: #22d3ee;
  --magenta:     #d946ef;

  --text:        #f1f5f9;
  --text-2:      #94a3b8;
  --text-3:      #475569;

  --grad:        linear-gradient(135deg, var(--violet-soft), var(--cyan-bright));
  --grad-v:      linear-gradient(180deg, var(--violet-soft), var(--cyan-bright));

  --radius:      16px;
  --radius-lg:   24px;
  --ease:        cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', 'Space Grotesk', -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--void);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }

/* ---- Canvas ---- */
#canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
}

/* ---- Layout ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
}
.section { padding: 7rem 0; position: relative; z-index: 1; }

/* ---- Typography ---- */
.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-eyebrow {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--violet-soft);
  margin-bottom: 1.25rem;
}
.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
}

/* ================================================================
   NAV
   ================================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  padding: 0 2rem;
  transition: background 0.4s, border-color 0.4s;
}
.nav.scrolled {
  background: rgba(7, 7, 15, 0.88);
  backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--border);
}
.nav-wrap {
  max-width: 1200px;
  margin: 0 auto;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.nav-logo em {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}
.nav-menu a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  transition: color 0.2s;
}
.nav-menu a:hover { color: var(--text); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: #fff !important;
  background: linear-gradient(135deg, var(--violet), var(--cyan)) !important;
  border: none !important;
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-size: 0.82rem !important;
  font-weight: 600 !important;
  box-shadow: 0 0 18px rgba(124,58,237,0.35);
  transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s !important;
}
.nav-cta:hover {
  opacity: 0.88 !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(124,58,237,0.5) !important;
}
.nav-cta .arrow { transition: transform 0.2s; display: inline-block; }
.nav-cta:hover .arrow { transform: translateX(3px); }

/* ================================================================
   HERO
   ================================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* Ambient glow orbs */
.hero::before {
  content: '';
  position: absolute;
  width: 700px; height: 700px;
  top: -200px; left: -150px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.18) 0%, transparent 70%);
  border-radius: 50%;
  animation: orb-drift 12s ease-in-out infinite alternate;
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  width: 500px; height: 500px;
  bottom: -100px; right: -50px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  animation: orb-drift 9s ease-in-out infinite alternate-reverse;
  pointer-events: none;
}
@keyframes orb-drift {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(40px, 30px) scale(1.1); }
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding-top: 68px;
  max-width: 800px;
  padding-left: 2rem;
  padding-right: 2rem;
  margin: 0 auto;
  width: 100%;
}

/* Decorative rings */
.hero-geo {
  position: absolute;
  right: -120px;
  top: 50%;
  transform: translateY(-50%);
  width: 520px;
  height: 520px;
  pointer-events: none;
  z-index: 1;
}
.geo-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.geo-ring-1 {
  width: 220px; height: 220px;
  border-color: rgba(167, 139, 250, 0.25);
  animation: ring-spin 18s linear infinite;
}
.geo-ring-1::after {
  content: '';
  position: absolute;
  top: -4px; left: 50%;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--violet-soft);
  box-shadow: 0 0 12px var(--violet-soft);
}
.geo-ring-2 {
  width: 360px; height: 360px;
  border-color: rgba(34, 211, 238, 0.15);
  animation: ring-spin 28s linear infinite reverse;
}
.geo-ring-2::after {
  content: '';
  position: absolute;
  top: 30%; left: -4px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan-bright);
  box-shadow: 0 0 10px var(--cyan-bright);
}
.geo-ring-3 {
  width: 500px; height: 500px;
  border-color: rgba(217, 70, 239, 0.08);
  animation: ring-spin 40s linear infinite;
}
@keyframes ring-spin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to   { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Hero Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan-bright);
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.2);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  margin-bottom: 2rem;
}
.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan-bright);
  box-shadow: 0 0 8px var(--cyan-bright);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.75); }
}

/* Hero Title */
.hero-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(4rem, 9vw, 8rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  display: block;
}
.title-line {
  display: block;
  color: var(--text);
}
.title-line.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}
.hero-desc {
  font-size: 1rem;
  color: var(--text-2);
  max-width: 520px;
  line-height: 1.85;
  margin-bottom: 2.5rem;
}
.hero-btns {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--grad);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.9rem 2rem;
  border-radius: 10px;
  transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 0 0 rgba(124, 58, 237, 0);
}
.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(124, 58, 237, 0.4);
}
.btn-primary svg { transition: transform 0.2s; }
.btn-primary:hover svg { transform: translateX(3px); }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  color: var(--text-2);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.9rem 2rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: transparent;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.btn-ghost:hover {
  border-color: rgba(167, 139, 250, 0.4);
  color: var(--text);
  background: var(--surface);
}

.hero-scroll {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 4rem;
  color: var(--text-3);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.15em;
}
.scroll-line {
  width: 40px;
  height: 1px;
  background: var(--grad);
  animation: line-expand 2s ease-in-out infinite alternate;
}
@keyframes line-expand {
  from { width: 24px; opacity: 0.4; }
  to   { width: 48px; opacity: 1; }
}

/* ================================================================
   ABOUT
   ================================================================ */
.about { background: var(--deep); }
.about::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(124,58,237,0.04) 50%, transparent 100%);
  pointer-events: none;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}
.about-body {
  color: var(--text-2);
  font-size: 1.025rem;
  line-height: 1.9;
  margin-top: 1.5rem;
}
.about-tags {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 2rem;
}
/* 渐变左竖线样式 — 高质感 */
.about-tag {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.1rem 1.5rem;
  position: relative;
  cursor: default;
  transition: background 0.25s;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.about-tag:first-child { border-top: 1px solid rgba(255,255,255,0.04); }
.about-tag:hover { background: rgba(167,139,250,0.04); }
/* 渐变左竖线 */
.about-tag-accent {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--grad-v);
  border-radius: 0 2px 2px 0;
  opacity: 0;
  transform: scaleY(0);
  transform-origin: center;
  transition: opacity 0.3s, transform 0.35s var(--ease);
}
.about-tag:hover .about-tag-accent,
.about-tag.visible .about-tag-accent {
  opacity: 1;
  transform: scaleY(1);
}
.tag-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0;
  min-width: 1.8rem;
}
.tag-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
}

/* Decorative vis grid */
.about-visual {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}
.about-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(124,58,237,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.vis-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  margin-bottom: 1rem;
}
.vis-cell {
  aspect-ratio: 1;
  border-radius: 4px;
  background: rgba(167, 139, 250, 0.12);
  animation: vis-pulse 3s ease-in-out infinite;
}
.vis-cell:nth-child(3n)   { background: rgba(34, 211, 238, 0.18); animation-delay: 0.5s; }
.vis-cell:nth-child(5n)   { background: rgba(167, 139, 250, 0.25); animation-delay: 1s; }
.vis-cell:nth-child(7n+2) { background: rgba(217, 70, 239, 0.12); animation-delay: 1.5s; }
@keyframes vis-pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(0.95); }
}
.vis-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--text-3);
  text-align: center;
}

/* ================================================================
   SERVICES
   ================================================================ */
.services { background: var(--void); }
.section-header {
  max-width: 560px;
  margin-bottom: 3.5rem;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.svc-card {
  background: var(--deep);
  padding: 2.25rem 2rem;
  position: relative;
  transition: background 0.3s;
  cursor: default;
  overflow: hidden;
}
.svc-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.svc-card:hover { background: var(--surface-h); }
.svc-card:hover::before { transform: scaleX(1); }
.svc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.svc-id {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--violet-soft);
}
.svc-category {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  background: rgba(255,255,255,0.04);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}
.svc-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.85rem;
  letter-spacing: -0.01em;
}
.svc-desc {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.75;
}
.svc-arrow {
  margin-top: 1.5rem;
  color: var(--text-3);
  transition: color 0.2s, transform 0.2s;
}
.svc-card:hover .svc-arrow {
  color: var(--violet-soft);
  transform: translateX(4px);
}

/* ================================================================
   STATS
   ================================================================ */
.stats { background: var(--deep); }
.stats-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}
.stats-desc {
  color: var(--text-2);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-top: 1.25rem;
  margin-bottom: 2rem;
}
.stats-tags {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.stats-tag {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-2);
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
}
.stats-right {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.stat-item {
  padding: 1.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, background 0.3s;
}
.stat-item:hover {
  border-color: rgba(167,139,250,0.3);
  background: var(--surface-h);
}
.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--grad);
  opacity: 0;
  transition: opacity 0.3s;
}
.stat-item:hover::after { opacity: 1; }
.stat-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-3);
  font-weight: 500;
}
.stat-line {
  position: absolute;
  top: 0; right: 0;
  width: 3px;
  height: 40%;
  background: var(--grad-v);
  border-radius: 0 var(--radius) 0 0;
  opacity: 0.4;
}

/* ================================================================
   TESTIMONIAL
   ================================================================ */
.testimonial { background: var(--void); }
.testi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.testi-card {
  padding: 2.25rem;
  background: var(--surface);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s var(--ease), background 0.3s;
  /* 渐变边框 */
  border: 1px solid transparent;
  background-clip: padding-box;
}
.testi-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: calc(var(--radius-lg) + 1px);
  background: linear-gradient(160deg,
    rgba(167,139,250,0.35) 0%,
    rgba(167,139,250,0.05) 40%,
    rgba(34,211,238,0.2) 100%
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  transition: opacity 0.3s;
  opacity: 0.6;
}
.testi-card:hover { transform: translateY(-4px); background: var(--surface-h); }
.testi-card:hover::before { opacity: 1; }
/* 内部左上角光晕 */
.testi-card::after {
  content: '';
  position: absolute;
  top: -60px; left: -60px;
  width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(124,58,237,0.07) 0%, transparent 70%);
  pointer-events: none;
}
.testi-tag {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--violet-soft);
  background: rgba(124,58,237,0.1);
  border: 1px solid rgba(167,139,250,0.2);
  padding: 0.25rem 0.7rem;
  border-radius: 4px;
  margin-bottom: 1.25rem;
  width: fit-content;
}
.testi-quote {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.85;
  font-style: normal;
  flex: 1;
  position: relative;
  z-index: 1;
}
.testi-author {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.testi-avatar {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(124,58,237,0.4), rgba(6,182,212,0.4));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  flex-shrink: 0;
}
.testi-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.15rem;
}
.testi-role {
  font-size: 0.75rem;
  color: var(--text-3);
  font-weight: 400;
}

/* ================================================================
   TEAM
   ================================================================ */
.team { background: var(--deep); }
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}
.team-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  cursor: default;
}
/* 渐变边框 */
.team-card-inner {
  padding: 2rem 1.5rem;
  background: var(--surface);
  border-radius: var(--radius-lg);
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.5rem;
  border: 1px solid transparent;
  background-clip: padding-box;
  transition: background 0.3s;
}
.team-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: calc(var(--radius-lg) + 1px);
  background: linear-gradient(160deg,
    rgba(167,139,250,0.3) 0%,
    rgba(255,255,255,0.04) 50%,
    rgba(34,211,238,0.2) 100%
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  z-index: 0;
  opacity: 0.5;
  transition: opacity 0.35s;
}
.team-card:hover::before { opacity: 1; }
.team-card:hover .team-card-inner { background: var(--surface-h); }
/* 悬停底部光晕 */
.team-card-glow {
  position: absolute;
  bottom: -60px; left: 50%;
  transform: translateX(-50%);
  width: 160px; height: 120px;
  background: radial-gradient(circle, rgba(124,58,237,0.18) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s, bottom 0.4s var(--ease);
}
.team-card:hover .team-card-glow { opacity: 1; bottom: -20px; }

.team-index {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-3);
  align-self: flex-end;
  margin-bottom: 0.5rem;
}
.team-avatar {
  position: relative;
  width: 72px; height: 72px;
  margin: 0 auto 1rem;
}
.avatar-ring {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid transparent;
  background: linear-gradient(135deg, rgba(167,139,250,0.5), rgba(34,211,238,0.4)) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: ring-glow 3s ease-in-out infinite alternate;
}
@keyframes ring-glow {
  from { opacity: 0.5; }
  to   { opacity: 1; }
}
.avatar-core {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(124,58,237,0.25), rgba(6,182,212,0.2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  background-clip: padding-box;
  color: transparent;
  background: linear-gradient(135deg, var(--violet-soft), var(--cyan-bright));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.team-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}
.team-role {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--violet-soft);
  margin-top: 0.15rem;
}
.team-role-en {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.04em;
  margin-top: 0.1rem;
}

/* ================================================================
   CONTACT CTA
   ================================================================ */
.contact-cta { background: var(--deep); }
.cta-inner {
  position: relative;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
  padding: 4rem 3rem;
  border-radius: var(--radius-lg);
  background: var(--surface);
  overflow: hidden;
  /* 渐变边框 */
  border: 1px solid transparent;
  background-clip: padding-box;
}
.cta-inner::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: calc(var(--radius-lg) + 1px);
  background: linear-gradient(135deg,
    rgba(167,139,250,0.4) 0%,
    rgba(255,255,255,0.04) 50%,
    rgba(34,211,238,0.3) 100%
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.cta-glow {
  position: absolute;
  top: -100px; left: 50%;
  transform: translateX(-50%);
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(124,58,237,0.12) 0%, transparent 65%);
  pointer-events: none;
}
.cta-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0.75rem 0 1rem;
  position: relative;
}
.cta-desc {
  color: var(--text-2);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 2rem;
  position: relative;
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: linear-gradient(135deg, var(--violet), var(--cyan));
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.9rem 2rem;
  border-radius: 10px;
  position: relative;
  box-shadow: 0 0 24px rgba(124,58,237,0.35);
  transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s;
}
.btn-cta:hover {
  opacity: 0.88;
  transform: translateY(-2px);
  box-shadow: 0 8px 36px rgba(124,58,237,0.5);
}
.btn-cta svg { transition: transform 0.2s; }
.btn-cta:hover svg { transform: translateX(3px); }

/* ================================================================
   FOOTER
   ================================================================ */
.footer {
  background: var(--void);
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
}
.footer-top {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}
.footer-brand-desc {
  font-size: 0.82rem;
  color: var(--text-3);
  line-height: 1.6;
  max-width: 260px;
}
.footer-info {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.footer-info-item {
  display: flex;
  align-items: baseline;
  gap: 1rem;
}
.footer-info-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  flex-shrink: 0;
  min-width: 2.5rem;
}
.footer-info-val {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.5;
}
.footer-link { color: var(--violet-soft); }
.footer-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.footer-copy {
  font-size: 0.75rem;
  color: var(--text-3);
}
.footer-team-link {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-3);
  transition: color 0.2s;
  letter-spacing: 0.02em;
}
.footer-team-link:hover { color: var(--violet-soft); }


/* ================================================================
   SCROLL REVEAL
   ================================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 1024px) {
  .hero-geo { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-inner { grid-template-columns: 1fr; gap: 3rem; }
  .testi-grid { grid-template-columns: 1fr 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-menu { display: none; }
  .hero-title { font-size: clamp(3rem, 12vw, 5rem); }
  .services-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-right { grid-template-columns: 1fr 1fr; }
  .section { padding: 5rem 0; }
  .testi-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}