:root {
  --bg: #05060d;
  --fg: #f2f3ff;
  --muted: rgba(226, 229, 255, 0.64);
  --line: rgba(190, 198, 255, 0.14);
  --accent: #8b7cff;
  --nav-bg: rgba(5, 6, 13, 0.72);
  --font-display: Georgia, 'Times New Roman', 'Songti SC', 'STSong', serif;
  --font-sans: system-ui, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, 'Liberation Mono', monospace;
}

body {
  background:
    radial-gradient(1100px 900px at 76% 34%, rgba(84, 52, 180, 0.3), transparent 62%),
    radial-gradient(850px 700px at 88% 70%, rgba(20, 136, 168, 0.2), transparent 60%),
    radial-gradient(700px 600px at 10% 8%, rgba(139, 124, 255, 0.08), transparent 60%),
    var(--bg);
  animation: page-in 0.8s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 80;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.88' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

@keyframes page-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: clamp(118px, 14vh, 180px) clamp(20px, 6vw, 96px) clamp(76px, 9vh, 120px);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(
    90deg,
    #05060d 0%,
    rgba(5, 6, 13, 0.95) 26%,
    rgba(5, 6, 13, 0.62) 45%,
    transparent 64%
  );
}

.scene {
  position: absolute;
  inset: 0 0 0 36%;
  z-index: 0;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 26%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 26%);
}

.scene-fallback {
  background:
    radial-gradient(circle at 52% 44%, rgba(190, 180, 255, 0.4), transparent 18%),
    radial-gradient(circle at 58% 52%, rgba(90, 220, 255, 0.3), transparent 30%),
    radial-gradient(circle at 44% 38%, rgba(255, 180, 235, 0.2), transparent 26%);
  filter: blur(2px);
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.eyebrow,
.panel-label {
  margin: 0 0 24px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: var(--muted);
}

h1 {
  margin: 0 0 30px;
  font-family: var(--font-display);
  font-size: clamp(2.9rem, 6.6vw, 7.2rem);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: -0.05em;
}

h1 em {
  font-style: italic;
  background: linear-gradient(100deg, #d7d0ff 4%, #7fe7ff 52%, #ffb8ea 92%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  margin: 0;
  max-width: 480px;
  font-size: clamp(14px, 1.2vw, 17px);
  line-height: 1.9;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 13px 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.045);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition:
    transform 0.25s ease,
    border-color 0.25s ease,
    background 0.25s ease;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: rgba(190, 198, 255, 0.4);
  background: rgba(255, 255, 255, 0.075);
}

.btn--solid {
  border-color: transparent;
  background: linear-gradient(100deg, #9a8dff, #5ec8ff);
  color: #070914;
}

.btn--solid:hover {
  border-color: transparent;
  background: linear-gradient(100deg, #aea2ff, #78d4ff);
}

.hero-foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  max-width: 560px;
  margin-top: 64px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

/* ---------- glass surfaces ---------- */

.glass-panel,
.glass-card {
  position: relative;
  border: 1px solid rgba(190, 198, 255, 0.17);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.022));
  -webkit-backdrop-filter: blur(22px);
  backdrop-filter: blur(22px);
  box-shadow:
    0 36px 90px -50px rgba(0, 0, 0, 0.9),
    inset 0 1px 0 rgba(255, 255, 255, 0.09);
}

.glass-panel {
  max-width: 1040px;
  padding: clamp(28px, 4.4vw, 60px);
  border-radius: 26px;
  overflow: hidden;
}

.glass-panel::after {
  content: '';
  position: absolute;
  right: -18%;
  top: -40%;
  width: 55%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(127, 231, 255, 0.16), transparent 68%);
  pointer-events: none;
}

.panel-label {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--accent);
}

.glass-panel h2 {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 4rem);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.glass-panel p {
  max-width: 660px;
  margin: 0;
  font-size: 14px;
  line-height: 1.95;
  color: var(--muted);
}

.statement,
.practice,
.selected,
.contact {
  padding: clamp(70px, 9vw, 130px) clamp(20px, 6vw, 96px);
}

.section-label {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
  padding-bottom: 17px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.practice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.glass-card {
  display: flex;
  flex-direction: column;
  min-height: 250px;
  padding: clamp(22px, 2.4vw, 32px);
  border-radius: 22px;
  transition:
    transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1),
    border-color 0.35s ease,
    background 0.35s ease;
}

.glass-card:hover {
  transform: translateY(-5px);
  border-color: rgba(190, 198, 255, 0.34);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.105), rgba(255, 255, 255, 0.03));
}

.card-no {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.glass-card h3 {
  margin: 22px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  font-weight: 400;
  letter-spacing: -0.02em;
}

.glass-card p {
  margin: 0;
  font-size: 12.8px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- selected ---------- */

.selected-list {
  margin-top: 28px;
  border-top: 1px solid var(--line);
}

.selected-row {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) minmax(0, 1.1fr) 28px;
  align-items: center;
  gap: 18px;
  padding: 22px 8px;
  border-bottom: 1px solid var(--line);
  transition:
    padding 0.3s ease,
    background 0.3s ease;
}

.selected-row:hover {
  padding-left: 20px;
  background: linear-gradient(90deg, rgba(139, 124, 255, 0.12), transparent 70%);
}

.row-index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.row-title {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  letter-spacing: -0.02em;
}

.row-title b {
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 8.5px;
  font-weight: 400;
  letter-spacing: 0.13em;
  color: var(--muted);
}

.row-note {
  color: var(--muted);
  font-size: 12.5px;
}

.row-arrow {
  justify-self: end;
  color: var(--muted);
  transition: transform 0.3s ease, color 0.3s ease;
}

.selected-row:hover .row-arrow {
  transform: translate(3px, -3px);
  color: var(--fg);
}

/* ---------- contact ---------- */

.contact-inner {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.contact h2 {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 5rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.045em;
}

.contact h2 em {
  font-style: italic;
  color: #b7adff;
}

.contact p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 28px;
  margin-top: 36px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.contact-links a {
  padding-bottom: 3px;
  border-bottom: 1px solid var(--line);
  transition: color 0.25s ease, border-color 0.25s ease;
}

.contact-links a:hover {
  color: var(--fg);
  border-color: var(--accent);
}

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  padding: 24px clamp(20px, 6vw, 96px);
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.13em;
  color: var(--muted);
}

.footer a:hover {
  color: var(--fg);
}

@media (max-width: 1040px) {
  .practice-grid {
    grid-template-columns: 1fr 1fr;
  }

  .glass-card:last-child {
    grid-column: span 2;
    min-height: 200px;
  }
}

@media (max-width: 860px) {
  .scene {
    inset: 0;
    opacity: 0.42;
    -webkit-mask-image: linear-gradient(180deg, #000 0 30%, transparent 84%);
    mask-image: linear-gradient(180deg, #000 0 30%, transparent 84%);
  }

  .hero {
    align-items: flex-end;
    padding-bottom: 110px;
  }

  .hero::before {
    background: linear-gradient(
      180deg,
      rgba(5, 6, 13, 0.12) 0%,
      rgba(5, 6, 13, 0.58) 38%,
      rgba(5, 6, 13, 0.94) 78%
    );
  }

  .hero-copy {
    max-width: 640px;
  }

  .selected-row {
    grid-template-columns: 34px minmax(0, 1fr) 24px;
  }

  .row-note {
    display: none;
  }
}

@media (max-width: 640px) {
  h1 {
    font-size: clamp(2.35rem, 6.6vw, 7.2rem);
  }

  .hero h1,
  .hero-lead {
    text-shadow: 0 2px 28px rgba(5, 6, 13, 0.82);
  }

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

  .glass-card:last-child {
    grid-column: auto;
  }

  .hero-foot {
    margin-top: 46px;
  }

  .btn {
    width: 100%;
    justify-content: space-between;
  }
}