/* 2.5D：实色厚边 + 投影做出“立起来”的面板和键帽按钮，等距网格地面，天空到奶油色渐变 */
:root {
  --ink: #2F2410;
  --edge: #3A2A10;
  --muted: #7A6A4F;
  --cow: #F5B731;
  --cow-light: #FFD866;
  --cow-dark: #C98712;
  --pink: #F4A1B3;
  --horn: #A99BD6;
  --grass: #6DB33F;
  --cream: #FFF6E3;
  --card: #FFFDF7;
  --sky: #BFE6FF;
  --red: #D8443A;
  --ok: #DDF5C8;
  --bad: #FFDCD6;
  --display: 'ZCOOL KuaiLe', 'PingFang SC', 'Noto Sans SC', sans-serif;
  --num: 'Fredoka', 'PingFang SC', system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { background: var(--cream); scroll-behavior: smooth; }
body {
  margin: 0; color: var(--ink);
  font: 15px/1.6 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', system-ui, sans-serif;
  background:
    repeating-linear-gradient(30deg, rgba(58, 42, 16, .045) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(150deg, rgba(58, 42, 16, .045) 0 1px, transparent 1px 44px),
    linear-gradient(180deg, var(--sky) 0, #E7F5FF 520px, var(--cream) 760px);
}
a { color: #2D5DB8; }
img { max-width: 100%; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; }
.pad { padding: 40px 16px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; word-break: break-all; }
.num { font-family: var(--num); font-weight: 600; font-variant-numeric: tabular-nums; }

/* 顶栏：悬浮的一块厚板 */
.top {
  position: sticky; top: 10px; z-index: 5; display: flex; align-items: center; gap: 10px;
  margin: 10px auto 0; max-width: 1120px; width: calc(100% - 24px); padding: 8px 10px 8px 14px;
  background: rgba(255, 253, 247, .92); backdrop-filter: blur(8px);
  border: 2px solid var(--edge); border-radius: 18px; box-shadow: 0 5px 0 var(--edge), 0 14px 24px rgba(58, 42, 16, .14);
}
.brand { display: flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; margin-right: auto; }
.brand b { font: 26px/1 var(--display); }
.brand small { font: 600 12px/1 var(--num); color: var(--cow-dark); letter-spacing: 1px; }
.chip {
  font: 600 13px/1 var(--num); color: var(--ink); text-decoration: none; cursor: pointer; padding: 8px 12px;
  background: #fff; border: 2px solid var(--edge); border-radius: 999px; box-shadow: 0 3px 0 var(--edge);
}
.chip:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--edge); }

/* 键帽按钮 */
.key {
  --face: linear-gradient(180deg, var(--cow-light), var(--cow));
  font: inherit; font-weight: 700; font-size: 16px; line-height: 1; color: var(--ink); text-decoration: none; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 14px 22px;
  background: var(--face); border: 2px solid var(--edge); border-radius: 14px;
  box-shadow: 0 6px 0 var(--edge), inset 0 2px 0 rgba(255, 255, 255, .6);
  transition: transform .08s, box-shadow .08s;
}
.key:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 7px 0 var(--edge), inset 0 2px 0 rgba(255, 255, 255, .6); }
.key:active:not(:disabled) { transform: translateY(5px); box-shadow: 0 1px 0 var(--edge), inset 0 2px 0 rgba(255, 255, 255, .6); }
.key:focus-visible { outline: 3px solid #2D5DB8; outline-offset: 3px; }
.key:disabled { cursor: not-allowed; filter: grayscale(.7); opacity: .55; }
.key-light { --face: linear-gradient(180deg, #fff, #F1EADB); }
.key-green { --face: linear-gradient(180deg, #A8E27A, var(--grass)); }
.key-sm { padding: 9px 14px; font-size: 14px; border-radius: 12px; box-shadow: 0 4px 0 var(--edge), inset 0 2px 0 rgba(255, 255, 255, .6); }
.key-sm:active:not(:disabled) { transform: translateY(3px); box-shadow: 0 1px 0 var(--edge); }
.key-block { width: 100%; font-size: 18px; padding: 16px; }

/* 首屏 */
.hero { max-width: 1120px; margin: 0 auto; padding: 36px 16px 8px; display: grid; grid-template-columns: 1.05fr 1fr; gap: 24px; align-items: center; }
.badge { display: inline-block; font: 600 12px/1 var(--num); letter-spacing: 1px; padding: 8px 12px; background: var(--ink); color: var(--cow-light); border-radius: 999px; }
.hero h1 {
  font: clamp(64px, 12vw, 128px)/1 var(--display); margin: 18px 0 16px; color: var(--cow-light); letter-spacing: 4px;
  -webkit-text-stroke: 3px var(--edge); paint-order: stroke fill;
  text-shadow: 0 2px 0 var(--cow-dark), 0 4px 0 var(--cow-dark), 0 6px 0 var(--cow-dark), 0 8px 0 var(--edge), 0 18px 24px rgba(58, 42, 16, .25);
}
.hero p { font-size: 17px; margin: 0 0 20px; max-width: 32em; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 22px; }
/* 铸造卡：黄色标题栏 + 旋转放射光舞台 + 黑底按钮区 */
.mint-card { border: 2px solid var(--edge); border-radius: 24px; overflow: hidden; background: var(--ink);
  box-shadow: 0 8px 0 var(--edge), 0 26px 40px rgba(58, 42, 16, .22); }
.mc-head { display: flex; align-items: center; gap: 12px; padding: 14px 16px; background: linear-gradient(180deg, var(--cow-light), var(--cow)); border-bottom: 2px solid var(--edge); }
.mc-icon { flex: none; width: 52px; height: 52px; display: grid; place-items: center; background: var(--ink); border-radius: 14px; box-shadow: 0 3px 0 #000; }
.mc-title { margin-right: auto; min-width: 0; }
.mc-title b { display: block; font: 700 20px/1.2 var(--num); white-space: nowrap; }
.mc-title small { font: 500 12px/1 ui-monospace, Menlo, monospace; color: #6B5320; letter-spacing: .5px; }
.mc-chain { flex: none; display: inline-flex; align-items: center; gap: 6px; font: 600 12px/1 ui-monospace, Menlo, monospace; color: #fff; background: var(--ink); padding: 9px 12px; border-radius: 999px; }
.mc-chain i { width: 8px; height: 8px; border-radius: 50%; background: #3ED98A; box-shadow: 0 0 0 3px rgba(62, 217, 138, .25); }
.mc-stage { position: relative; overflow: hidden; aspect-ratio: 1 / .82; border-bottom: 2px solid var(--edge);
  background: radial-gradient(circle at 50% 50%, #FFF8D6 0, #FFE48A 45%, var(--cow) 100%); }
.mc-stage::before { content: ''; position: absolute; inset: -60%;
  background: repeating-conic-gradient(from 0deg, rgba(255, 255, 255, .55) 0 9deg, transparent 9deg 18deg);
  -webkit-mask: radial-gradient(circle, #000 18%, rgba(0, 0, 0, .35) 60%); mask: radial-gradient(circle, #000 18%, rgba(0, 0, 0, .35) 60%); }
.mc-stage::after { content: ''; position: absolute; left: 50%; bottom: 7%; width: 46%; height: 7%; transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(58, 42, 16, .35), transparent); }
.spin { position: absolute; inset: 4% 14% 6%; z-index: 1; cursor: grab; touch-action: pan-y;
  background: url(niulai-still.webp) center / contain no-repeat; }
/* 精灵图加载完才换上，静态图不能留在底下，否则透明处会透出正面那一帧 */
.spin.ready { background: url(niulai-spin.webp) 0 0 / 1200% 600% no-repeat; }
.spin:active { cursor: grabbing; }
.spark { position: absolute; z-index: 2; font-style: normal; color: #fff; text-shadow: 0 0 10px #fff, 0 2px 0 var(--cow-dark); }
.s1 { top: 14%; left: 22%; font-size: 34px; color: var(--cow); -webkit-text-stroke: 2px var(--edge); }
.s2 { top: 22%; right: 20%; font-size: 20px; }
.s3 { bottom: 24%; left: 16%; font-size: 16px; }
.mc-foot { padding: 18px 18px 22px; }
.mc-foot .key { font-size: 20px; }
@media (prefers-reduced-motion: no-preference) {
  .mc-stage::before { animation: rays 36s linear infinite; }
  .spin { animation: bob 4s ease-in-out infinite; }
  .spark { animation: twinkle 2.4s ease-in-out infinite; }
  .s2 { animation-delay: -.8s; }
  .s3 { animation-delay: -1.6s; }
  @keyframes rays { to { transform: rotate(1turn); } }
  @keyframes bob { 50% { transform: translateY(-3%); } }
  @keyframes twinkle { 50% { transform: scale(.55) rotate(45deg); opacity: .5; } }
}
.stats3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.stat { background: var(--card); border: 2px solid var(--edge); border-radius: 14px; padding: 10px 12px; box-shadow: 0 4px 0 var(--edge); }
.stat span { display: block; font-size: 12px; color: var(--muted); }
.stat b { font: 600 18px/1.3 var(--num); }

/* 三步 */
.steps { max-width: 1120px; margin: 18px auto 0; padding: 0 16px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.step { display: grid; grid-template-columns: auto 1fr; column-gap: 12px; align-items: center; padding: 14px 16px;
  background: linear-gradient(180deg, #fff, #FFF4DA); border: 2px solid var(--edge); border-radius: 16px; box-shadow: 0 5px 0 var(--edge); }
.step i { grid-row: span 2; font: 700 22px/1 var(--num); font-style: normal; width: 46px; height: 46px; display: grid; place-items: center;
  background: var(--cow); border: 2px solid var(--edge); border-radius: 12px; box-shadow: 0 3px 0 var(--edge); }
.step span { font-size: 13px; color: var(--muted); }

/* 面板 */
.board { max-width: 1120px; margin: 0 auto; padding: 36px 16px 48px; display: grid; grid-template-columns: 1.25fr 1fr; gap: 28px; align-items: start; }
.board > .center { grid-column: 1 / -1; }
.col { display: grid; gap: 28px; }
.panel {
  position: relative; background: linear-gradient(180deg, #fff, var(--card)); border: 2px solid var(--edge); border-radius: 22px;
  padding: 22px; box-shadow: 0 8px 0 var(--edge), 0 22px 30px rgba(58, 42, 16, .14); scroll-margin-top: 90px;
}
.panel h2 { margin: 0 0 14px; font: 28px/1.15 var(--display); display: flex; align-items: center; gap: 10px; }
.panel h3 { margin: 0 0 10px; font: 22px/1.2 var(--display); }
.panel-stack > * + * { margin-top: 14px; }
.tag { font: 600 12px/1 var(--num); padding: 6px 10px; border: 2px solid var(--edge); border-radius: 999px; background: var(--cow); white-space: nowrap; }
.tag.ph-0 { background: var(--horn); }
.tag.ph-2 { background: #FFC37A; }
.tag.ph-3 { background: #9EE07A; }
.tag.ph-4 { background: #DDD3C0; }
h2 .tag { margin-left: auto; }

/* 进度条：凹槽 + 凸起的填充 */
.meter-label { display: flex; justify-content: space-between; align-items: baseline; font-weight: 700; margin-bottom: 6px; }
.meter { height: 28px; padding: 4px; background: #EFE6D3; border: 2px solid var(--edge); border-radius: 999px; box-shadow: inset 0 3px 0 rgba(58, 42, 16, .15); }
.meter i { display: block; height: 100%; min-width: 16px; border-radius: 999px; border: 2px solid var(--edge);
  background: repeating-linear-gradient(-45deg, transparent 0 8px, rgba(255, 255, 255, .25) 8px 16px), linear-gradient(180deg, var(--cow-light), var(--cow));
  box-shadow: inset 0 -3px 0 var(--cow-dark), inset 0 2px 0 rgba(255, 255, 255, .55); }
.meter.pink i { background: repeating-linear-gradient(-45deg, transparent 0 8px, rgba(255, 255, 255, .3) 8px 16px), linear-gradient(180deg, #FFC6D2, var(--pink)); box-shadow: inset 0 -3px 0 #D57A8E, inset 0 2px 0 rgba(255, 255, 255, .55); }
.meter i.zero { min-width: 0; border: 0; }
.big-count { display: flex; align-items: baseline; gap: 8px; margin: 4px 0 16px; flex-wrap: wrap; }
.big-count b { font: 700 40px/1 var(--num); }
.timer { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.timer .cell { min-width: 58px; text-align: center; padding: 8px 6px; background: var(--ink); color: var(--cow-light); border-radius: 12px; box-shadow: 0 4px 0 #000; }
.timer .cell b { display: block; font: 700 24px/1 var(--num); }
.timer .cell span { font-size: 11px; color: #D8CDB6; }

.kv { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; margin: 0; font-size: 14px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-weight: 700; text-align: right; }
.ca { display: flex; gap: 8px; align-items: center; padding: 10px 12px; background: #FFF3CF; border: 2px dashed var(--edge); border-radius: 12px; font-size: 13px; }
.ca code { flex: 1; }

.id-line { display: flex; gap: 8px; align-items: center; font-weight: 700; padding: 10px 12px; border: 2px solid var(--edge); border-radius: 12px; }
.id-line.ok { background: var(--ok); }
.id-line.no { background: var(--bad); }
.note { font-size: 13px; color: var(--muted); margin: 0; }

/* AI Agent 提示词 */
.board.one { grid-template-columns: 1fr; padding-top: 0; }
.agent-form { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.ag-tabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.ag-tabs .key { padding-inline: 6px; white-space: nowrap; }
/* 选中的那颗：黄色键帽，按下去的状态 */
.ag-tabs .key[aria-pressed="true"], .ag-tabs .key[aria-pressed="true"]:hover {
  --face: linear-gradient(180deg, var(--cow-light), var(--cow)); transform: translateY(3px); box-shadow: 0 1px 0 var(--edge), inset 0 2px 0 rgba(255, 255, 255, .6);
}
@media (max-width: 520px) { .ag-tabs { grid-template-columns: repeat(2, 1fr); } }
.ag-qty[hidden], #ag-cap[hidden] { display: none; }
#ag-cap { margin-top: 14px; } /* .note 会把 panel-stack 的间距清零，键帽还有 6px 投影 */
#ag-copy { flex: 1; }
.ag-qty input { font: 700 16px/1 var(--num); color: var(--ink); padding: 10px 12px; border: 2px solid var(--edge); border-radius: 12px; background: #fff; box-shadow: inset 0 3px 0 rgba(58, 42, 16, .1); }
.ag-qty { display: flex; align-items: center; gap: 6px; font-weight: 700; }
.ag-qty input { width: 76px; text-align: center; }
.agent-text { margin: 14px 0; max-height: 300px; overflow: auto; white-space: pre-wrap; word-break: break-all; font: 12px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace; padding: 14px; background: #FFF3CF; border: 2px dashed var(--edge); border-radius: 14px; }

#toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); display: grid; gap: 10px; z-index: 20; width: min(92vw, 440px); }
#toast div { background: var(--ink); color: #fff; padding: 12px 16px; font-weight: 600; border-radius: 14px; box-shadow: 0 5px 0 #000; }
#toast div.err { background: var(--red); box-shadow: 0 5px 0 #7A1C15; }
#toast a { color: var(--cow-light); }

.foot { max-width: 1120px; margin: 0 auto; padding: 0 16px 40px; font-size: 12px; color: var(--muted); }

@media (max-width: 860px) {
  .hero, .board { grid-template-columns: 1fr; }
  .hero { padding-top: 20px; }
  .hero-art { order: -1; width: 100%; max-width: 440px; margin: 0 auto; }
  .steps { grid-template-columns: 1fr; gap: 12px; }
  .brand small, #x-link { display: none; }
  .stats3 .stat b { font-size: 15px; }
}
@media (max-width: 420px) {
  #ca-chip { display: none; }
  .mc-head { gap: 10px; padding: 12px; }
  .mc-icon { width: 44px; height: 44px; }
  .mc-title b { font-size: 16px; }
  .mc-chain { padding: 7px 9px; font-size: 11px; }
}