html.magnet-preview-page,
#explain {
  color-scheme: dark;
  --canvas: #08090a;
  --panel: #0d0e10;
  --panel-soft: #111214;
  --text: #f2f2f3;
  --muted: #8a8f98;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.18);
  --accent: #9d8cff;
  --accent-soft: rgba(157, 140, 255, 0.14);
  --complete: #59c98d;
  --complete-soft: rgba(89, 201, 141, 0.16);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

html.magnet-preview-page *,
#explain * { box-sizing: border-box; }

html.magnet-preview-page { background: var(--canvas); }

body.magnet-preview-page {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 50% 18%, rgba(157, 140, 255, 0.055), transparent 32%),
    var(--canvas);
}

body.magnet-preview-page button,
body.magnet-preview-page a,
#explain .magnet-demo button { font: inherit; }

body.magnet-preview-page button,
#explain .magnet-demo button { color: inherit; }

body.magnet-preview-page a { color: inherit; text-decoration: none; }

.preview-shell {
  width: min(1280px, calc(100% - 48px));
  margin: 0 auto;
  padding: 24px 0 36px;
}

.preview-bar {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.preview-brand,
.preview-switch {
  display: flex;
  align-items: center;
  gap: 10px;
}

.preview-brand__index {
  display: grid;
  width: 27px;
  height: 22px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text);
  font: 650 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.preview-brand__name {
  color: #d8d9db;
  font-size: 13px;
  font-weight: 600;
}

.preview-switch a,
.reset-button {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0 11px;
  color: var(--muted);
  background: transparent;
  font-size: 12px;
  cursor: pointer;
}

.preview-switch a:hover,
.reset-button:hover { color: var(--text); background: rgba(255, 255, 255, 0.045); }

.preview-switch a[aria-current="page"] {
  border-color: var(--line);
  color: var(--text);
  background: var(--panel-soft);
}

.reset-button { border-color: var(--line); }

.preview-heading {
  padding: 54px 0 26px;
  text-align: center;
}

.preview-heading__eyebrow {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.preview-heading h1 {
  margin: 0;
  color: var(--text);
  font-size: clamp(38px, 4.4vw, 66px);
  font-weight: 720;
  letter-spacing: -0.055em;
  line-height: 1.04;
}

.title-part { display: inline; white-space: nowrap; }

.preview-heading__instruction {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.magnet-demo {
  position: relative;
  min-height: 594px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.018), transparent 38%),
    var(--panel);
  isolation: isolate;
}

.magnet-demo::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.6), transparent 73%);
}

.magnet-row {
  position: absolute;
  z-index: 5;
  top: 48px;
  left: 50%;
  width: min(800px, calc(100% - 96px));
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  transform: translateX(-50%);
}

.magnet {
  position: relative;
  min-width: 0;
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 18px;
  overflow: visible;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  color: var(--text);
  background: #121316;
  box-shadow: 0 12px 34px rgba(0,0,0,.26);
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

.magnet:hover,
.magnet:focus-visible,
.magnet[data-active="true"] {
  border-color: rgba(157, 140, 255, 0.72);
  background: #161620;
  transform: translateY(-2px);
  outline: none;
}

.magnet:focus-visible { box-shadow: 0 0 0 2px var(--canvas), 0 0 0 4px var(--accent); }

.magnet__label {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 5px;
}

.magnet__name { font-size: 17px; font-weight: 680; letter-spacing: -.02em; }

.magnet__hint { color: var(--muted); font-size: 10px; letter-spacing: .08em; }

.magnet__indicator {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border: 1px solid rgba(255,255,255,.24);
  border-radius: 999px;
  background: #35383d;
  box-shadow: 0 0 0 4px rgba(255,255,255,.025);
  transition: background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.magnet[data-completed="true"] .magnet__indicator {
  border-color: rgba(89,201,141,.8);
  background: var(--complete);
  box-shadow: 0 0 0 4px rgba(89,201,141,.1), 0 0 16px rgba(89,201,141,.4);
}

.magnet__pole {
  position: absolute;
  left: 50%;
  bottom: -8px;
  width: 34%;
  height: 8px;
  border: 1px solid var(--line-strong);
  border-top: 0;
  background: #17181b;
  transform: translateX(-50%);
  transition: width 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.magnet[data-active="true"] .magnet__pole {
  width: calc(100% + 72px);
  border-color: rgba(157,140,255,.74);
  background: rgba(157,140,255,.24);
}

.fragment-field { position: absolute; inset: 0; z-index: 4; pointer-events: none; }

.fragment {
  position: absolute;
  left: var(--home-x);
  top: var(--home-y);
  width: var(--w);
  min-width: 60px;
  height: var(--h);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 9px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius, 3px);
  color: rgba(240,241,243,.66);
  background: linear-gradient(145deg, #383b40, #292c30);
  box-shadow: 0 4px 13px rgba(0,0,0,.24);
  clip-path: var(--clip, polygon(0 0, 100% 0, 96% 100%, 3% 100%));
  transform: translate(-50%, -50%) rotate(var(--home-r));
  transition:
    left 540ms cubic-bezier(.2,.72,.2,1),
    top 540ms cubic-bezier(.2,.72,.2,1),
    transform 540ms cubic-bezier(.2,.72,.2,1),
    filter 220ms ease,
    opacity 220ms ease;
  will-change: left, top, transform;
}

.fragment::before {
  content: "";
  width: 12px;
  height: 2px;
  flex: 0 0 auto;
  background: rgba(255,255,255,.3);
  box-shadow: 0 5px 0 rgba(255,255,255,.13);
}

.fragment__text {
  overflow: hidden;
  font: 620 9px/1 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: .02em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.magnet-demo[data-active="company"] .fragment[data-group="company"],
.magnet-demo[data-active="model"] .fragment[data-group="model"],
.magnet-demo[data-active="parameter"] .fragment[data-group="parameter"] {
  left: var(--target-x);
  top: var(--target-y);
  z-index: 9;
  border-color: rgba(157,140,255,.52);
  color: var(--text);
  background: linear-gradient(145deg, #504a70, #302d40);
  box-shadow: 0 9px 24px rgba(0,0,0,.34), 0 0 0 1px rgba(157,140,255,.1);
  transform: translate(-50%, -50%) rotate(var(--target-r));
}

.magnet-demo[data-active="company"] .fragment:not([data-group="company"]),
.magnet-demo[data-active="model"] .fragment:not([data-group="model"]),
.magnet-demo[data-active="parameter"] .fragment:not([data-group="parameter"]) {
  filter: brightness(.72);
  opacity: .72;
}

.open-box {
  position: absolute;
  z-index: 2;
  inset: 176px 7.5% 42px;
  pointer-events: none;
}

.open-box svg { width: 100%; height: 100%; overflow: visible; }

.open-box__fill { fill: rgba(255,255,255,.018); }
.open-box__floor { fill: rgba(255,255,255,.024); }
.open-box__line { fill: none; stroke: rgba(255,255,255,.2); stroke-width: 1.15; vector-effect: non-scaling-stroke; }
.open-box__inner { fill: none; stroke: rgba(255,255,255,.07); stroke-width: 1; vector-effect: non-scaling-stroke; }

.box-label {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 56px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.34);
  font-size: 10px;
  letter-spacing: .13em;
  text-transform: uppercase;
  transform: translateX(-50%);
}

.box-label::before,
.box-label::after { content: ""; width: 22px; height: 1px; background: rgba(255,255,255,.12); }

.reward {
  position: absolute;
  z-index: 12;
  top: 141px;
  left: 50%;
  width: min(760px, calc(100% - 120px));
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, 5px);
}

.reward__line {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  overflow: hidden;
  background: rgba(89,201,141,.12);
}

.reward__line::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--complete), transparent);
  transform: translateX(-105%);
}

.reward__message {
  position: relative;
  padding: 5px 10px;
  border: 1px solid rgba(89,201,141,.3);
  border-radius: 999px;
  color: #8ee0b2;
  background: #0e1512;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: .04em;
}

.magnet-demo[data-reward="running"] .reward,
.magnet-demo[data-reward="complete"] .reward { opacity: 1; transform: translate(-50%, 0); }

.magnet-demo[data-reward="running"] .reward__line::after { animation: reward-sweep 760ms cubic-bezier(.22,.75,.25,1) both; }
.magnet-demo[data-reward="running"] .reward__message { animation: reward-pop 760ms ease both; }

.live-status { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.preview-foot {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 2px 0;
  color: var(--muted);
  font-size: 11px;
}

@keyframes reward-sweep { 0% { transform: translateX(-105%); } 100% { transform: translateX(105%); } }
@keyframes reward-pop { 0% { opacity: 0; transform: scale(.92); } 45%,100% { opacity: 1; transform: scale(1); } }

@media (max-width: 720px) {
  .preview-shell { width: min(100% - 24px, 1280px); padding-top: 12px; }
  .preview-bar { padding-bottom: 12px; }
  .preview-brand__name { display: none; }
  .preview-switch { gap: 2px; }
  .preview-switch a, .reset-button { min-height: 44px; padding-inline: 9px; }
  .preview-heading { padding: 38px 0 22px; }
  .preview-heading h1 { font-size: clamp(36px, 10.3vw, 42px); }
  .title-part { display: block; }
  .preview-heading__instruction { font-size: 12px; }
  .magnet-demo { min-height: 520px; border-radius: 12px; }
  .magnet-row { top: 34px; width: calc(100% - 24px); gap: 7px; }
  .magnet { min-height: 68px; padding: 0 10px; gap: 6px; border-radius: 8px; }
  .magnet__name { font-size: 14px; }
  .magnet__hint { font-size: 8px; }
  .magnet__indicator { width: 8px; height: 8px; }
  .open-box { inset: 148px 3% 34px; }
  .fragment { width: min(var(--w), 86px); min-width: 44px; padding: 0 6px; }
  .fragment::before { width: 7px; }
  .fragment__text { font-size: 7.5px; }
  .reward { top: 116px; width: calc(100% - 38px); }
  .reward__message { font-size: 9px; }
  .box-label { bottom: 40px; }
  .preview-foot { align-items: flex-start; }
  .preview-foot span:first-child { max-width: 68%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}