:root {
  color-scheme: dark;
  --experience-bg: #08090d;
  --experience-panel: rgba(18, 20, 27, 0.92);
  --experience-line: rgba(255, 255, 255, 0.1);
  --experience-muted: #9ca3af;
  --experience-primary: #8b5cf6;
  --experience-primary-strong: #6d5dfc;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--experience-bg);
}

body.web-experience {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: #f8fafc;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background:
    radial-gradient(circle at 16% 18%, rgba(91, 78, 255, 0.2), transparent 30%),
    radial-gradient(circle at 84% 78%, rgba(144, 72, 255, 0.14), transparent 28%),
    radial-gradient(circle, rgba(255, 255, 255, 0.13) 1px, transparent 1.2px),
    var(--experience-bg);
  background-size: auto, auto, 28px 28px, auto;
}

.experience-shell {
  position: relative;
  isolation: isolate;
  width: min(1480px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 34px clamp(22px, 4vw, 72px);
  display: grid;
  grid-template-columns: minmax(0, 1.42fr) minmax(360px, 0.58fr);
  align-items: center;
  gap: clamp(36px, 6vw, 96px);
}

.experience-showcase {
  min-width: 0;
}

.experience-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: clamp(30px, 6vh, 68px);
  color: #fff;
  font-size: 18px;
  font-weight: 750;
}

.experience-brand img {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 10px 30px rgba(124, 92, 255, 0.3);
}

.experience-kicker {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin: 0 0 18px;
  padding: 7px 11px;
  border: 1px solid rgba(151, 131, 255, 0.25);
  border-radius: 999px;
  background: rgba(124, 92, 255, 0.1);
  color: #c8beff;
  font-size: 12px;
  font-weight: 650;
}

.experience-kicker::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #8ef0ba;
  box-shadow: 0 0 0 5px rgba(79, 218, 142, 0.08);
  content: "";
}

.experience-title {
  max-width: 760px;
  margin: 0;
  font-size: clamp(40px, 5.2vw, 76px);
  line-height: 1.04;
  letter-spacing: -0.055em;
  text-wrap: balance;
}

.experience-title span {
  color: transparent;
  background: linear-gradient(105deg, #ffffff 8%, #cfc7ff 48%, #8d7cff 92%);
  -webkit-background-clip: text;
  background-clip: text;
}

.experience-lead {
  max-width: 680px;
  margin: 22px 0 26px;
  color: #aab0be;
  font-size: clamp(15px, 1.45vw, 19px);
  line-height: 1.8;
}

.experience-features {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 30px;
}

.experience-features span {
  padding: 8px 11px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.035);
  color: #c9ced8;
  font-size: 12px;
}

.canvas-preview {
  position: relative;
  min-height: 322px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 22px;
  background:
    radial-gradient(circle, rgba(255, 255, 255, 0.13) 1px, transparent 1.2px),
    linear-gradient(145deg, rgba(17, 19, 25, 0.96), rgba(10, 11, 15, 0.98));
  background-size: 24px 24px, auto;
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.44);
}

.canvas-preview-bar {
  position: relative;
  z-index: 3;
  min-height: 48px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(10, 11, 15, 0.82);
  color: #aeb4c0;
  font-size: 11px;
}

.canvas-preview-bar strong {
  margin-left: 6px;
  color: #edf0f5;
  font-size: 12px;
}

.canvas-preview-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #565b68;
}

.canvas-preview-dot.active {
  background: #8b7cfb;
}

.canvas-preview-flow {
  position: relative;
  min-height: 274px;
}

.canvas-preview-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.canvas-preview-lines path {
  fill: none;
  stroke: rgba(161, 150, 255, 0.4);
  stroke-width: 1.2;
}

.preview-node {
  position: absolute;
  width: clamp(126px, 17vw, 174px);
  min-height: 92px;
  padding: 13px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  background: rgba(24, 26, 34, 0.96);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25);
}

.preview-node::after {
  position: absolute;
  top: 50%;
  right: -5px;
  width: 8px;
  height: 8px;
  border: 1px solid #9a8cff;
  border-radius: 50%;
  background: #1a1b23;
  content: "";
}

.preview-node small {
  display: block;
  margin-bottom: 7px;
  color: #8d94a2;
  font-size: 9px;
}

.preview-node strong {
  display: block;
  color: #f2f3f7;
  font-size: 12px;
}

.preview-node p {
  margin: 7px 0 0;
  color: #7f8796;
  font-size: 9px;
  line-height: 1.45;
}

.preview-node.script { left: 5%; top: 25px; }
.preview-node.asset { left: 29%; top: 145px; }
.preview-node.image { right: 27%; top: 26px; }
.preview-node.video {
  right: 4%;
  top: 145px;
  border-color: rgba(135, 116, 255, 0.46);
  background: linear-gradient(145deg, rgba(48, 42, 83, 0.98), rgba(24, 25, 35, 0.98));
}

.preview-node.video::before {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  margin-bottom: 9px;
  border-radius: 9px;
  background: rgba(139, 124, 251, 0.18);
  color: #c9c1ff;
  content: "▶";
  font-size: 10px;
}

.experience-login-panel {
  position: relative;
}

.auth-card {
  width: 100%;
  border: 1px solid var(--experience-line);
  border-radius: 24px;
  background: var(--experience-panel);
  padding: clamp(24px, 3vw, 34px);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(20px);
}

.auth-card-eyebrow {
  margin: 0 0 9px;
  color: #9d91ff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.auth-title {
  margin: 0 0 9px;
  font-size: 26px;
  letter-spacing: -0.03em;
}

.auth-sub {
  margin: 0 0 26px;
  color: var(--experience-muted);
  font-size: 13px;
  line-height: 1.7;
}

.auth-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 15px;
}

.auth-field label {
  color: #d7dbe3;
  font-size: 12px;
  font-weight: 600;
}

.auth-field input {
  width: 100%;
  height: 46px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 12px;
  outline: none;
  background: rgba(255, 255, 255, 0.045);
  color: #fff;
  padding: 0 14px;
  font-size: 15px;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.auth-field input:focus {
  border-color: rgba(139, 124, 251, 0.88);
  box-shadow: 0 0 0 4px rgba(124, 92, 255, 0.12);
}

.auth-actions {
  display: grid;
  grid-template-columns: minmax(116px, 0.75fr) minmax(150px, 1.25fr);
  gap: 10px;
  margin-top: 8px;
}

.auth-btn {
  min-width: 0;
  height: 46px;
  border: 0;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 680;
  cursor: pointer;
  transition: transform 150ms ease, filter 150ms ease, opacity 150ms ease;
}

.auth-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  filter: brightness(1.08);
}

.auth-btn:disabled {
  opacity: 0.58;
  cursor: wait;
}

.auth-btn.primary {
  background: linear-gradient(135deg, var(--experience-primary-strong), var(--experience-primary));
  color: #fff;
  box-shadow: 0 10px 24px rgba(124, 92, 255, 0.23);
}

.auth-btn.secondary {
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.055);
  color: #e6e8ee;
}

.auth-hint {
  margin: 16px 0 0;
  padding-top: 15px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  color: #878e9c;
  font-size: 11px;
  line-height: 1.7;
}

.auth-error {
  min-height: 19px;
  margin-top: 12px;
  color: #fca5a5;
  font-size: 12px;
  line-height: 1.5;
}

.auth-dev {
  margin-top: 13px;
  padding: 11px;
  border: 1px solid rgba(129, 140, 248, 0.22);
  border-radius: 11px;
  background: rgba(99, 102, 241, 0.12);
  color: #c7d2fe;
  font-size: 12px;
  line-height: 1.6;
}

.experience-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 22px;
}

.experience-step {
  min-width: 0;
  color: #737b89;
  font-size: 10px;
  line-height: 1.5;
}

.experience-step strong {
  display: block;
  margin-bottom: 3px;
  color: #c6cbd5;
  font-size: 10px;
}

.experience-step strong::before {
  display: inline-grid;
  width: 18px;
  height: 18px;
  place-items: center;
  margin-right: 5px;
  border-radius: 6px;
  background: rgba(124, 92, 255, 0.13);
  color: #aaa0ff;
  content: attr(data-step);
  font-size: 9px;
}

@media (max-width: 1040px) {
  .experience-shell {
    grid-template-columns: 1fr;
    align-content: start;
    gap: 36px;
  }

  .experience-brand {
    margin-bottom: 36px;
  }

  .experience-login-panel {
    width: min(560px, 100%);
  }

  .experience-title {
    max-width: 820px;
  }
}

@media (max-width: 680px) {
  .experience-shell {
    padding: 22px 16px 32px;
  }

  .experience-brand {
    margin-bottom: 30px;
  }

  .experience-title {
    font-size: clamp(36px, 12vw, 52px);
  }

  .experience-lead {
    margin-top: 17px;
  }

  .canvas-preview {
    min-height: 250px;
  }

  .canvas-preview-flow {
    min-height: 202px;
  }

  .preview-node {
    width: 124px;
    min-height: 78px;
    padding: 10px;
  }

  .preview-node.script { left: 4%; top: 16px; }
  .preview-node.asset { left: 8%; top: 112px; }
  .preview-node.image { right: 5%; top: 18px; }
  .preview-node.video { right: 4%; top: 112px; }

  .preview-node p {
    display: none;
  }

  .auth-card {
    border-radius: 20px;
  }

  .auth-actions {
    grid-template-columns: 1fr;
  }

  .experience-steps {
    grid-template-columns: 1fr;
  }
}

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