/* ================================================================ 大厅：黏土舵轮 + 海图 + 卡牌
   浅色系统是纸质航海图，深色系统是声呐屏；颜色都在 .hh 的变量里。
   --cat 是当前大类的颜色，注册成 <color> 以便过渡；舵轮的黏土色 --clay-* 全部由它推出。 */
@property --cat {
  syntax: '<color>';
  inherits: true;
  initial-value: #60a5fa;
}

:root[data-view='hub'] {
  color-scheme: light;
}
:root[data-view='hub'] body {
  background: #f1e6cc;
}
@media (prefers-color-scheme: dark) {
  :root[data-view='hub'] {
    color-scheme: dark;
  }
  :root[data-view='hub'] body {
    background: #061529;
  }
}

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

.hh {
  /* 指针方位（度，从正上方顺时针）；宽屏时改成正右方 */
  --active: 0;
  --gutter: clamp(16px, 4vw, 48px);

  /* 纸质海图 */
  --paper: #f4ecd9;
  --chart-ink: #2c5b86;
  --land: #e4d5ab;
  --ink: #1d2b3f;
  --soft: #3a4a60;
  --muted: #66758a;
  --line: rgba(29, 43, 63, 0.16);
  --glass: rgba(255, 251, 242, 0.78);
  --glass-strong: rgba(255, 251, 242, 0.94);
  --plate: rgba(255, 252, 244, 0.96);
  --card-paper: #fffcf5;
  --card-ink: #1d2b3f;
  --card-shadow: 0 16px 30px -14px rgba(60, 45, 20, 0.55);
  --star-off: #d9d1c0;
  --soon-a: #ebe2cd;
  --soon-b: #ded3ba;
  --ping: rgba(44, 91, 134, 0.6);
  --logo: #2c5b86;
  --wheel-shadow: rgba(60, 45, 20, 0.3);

  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  color: var(--ink);
  overflow-x: clip;
  transition: --cat 0.6s ease;
}
@media (prefers-color-scheme: dark) {
  /* 声呐屏 */
  .hh {
    --paper: #071a30;
    --chart-ink: #3ee0cf;
    --land: rgba(62, 224, 207, 0.12);
    --ink: #e3f3f4;
    --soft: #b5cfd5;
    --muted: #84a0aa;
    --line: rgba(160, 225, 230, 0.2);
    --glass: rgba(8, 28, 48, 0.72);
    --glass-strong: rgba(10, 34, 58, 0.92);
    --plate: rgba(8, 28, 48, 0.94);
    --card-paper: #0f2740;
    --card-ink: #e3f3f4;
    --card-shadow: 0 16px 30px -12px rgba(0, 0, 0, 0.75);
    --star-off: #3a5368;
    --soon-a: #17334f;
    --soon-b: #112a44;
    --ping: rgba(62, 224, 207, 0.75);
    --logo: #3ee0cf;
    --wheel-shadow: rgba(0, 0, 0, 0.55);
  }
}
.hh > :not(.hh-sky, .sr-only) {
  position: relative;
  z-index: 1;
}

/* ---------------------------------------------------------------- 海图
   hub-scene.js 生成等深线；海图四周多留 90px，转舵时在里面漂移 */
.hh-sky {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background: radial-gradient(120% 90% at 50% 45%, #f9f3e4 0%, #f2e7cd 65%, #e5d4ae 100%);
}
.hh-grain {
  position: absolute;
  inset: 0;
  opacity: 0.55;
  mix-blend-mode: multiply;
  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='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .45 0 0 0 0 .36 0 0 0 0 .2 0 0 0 .32 0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}
.hh-chart {
  position: absolute;
  top: -90px;
  left: -90px;
  width: calc(100% + 180px);
  height: calc(100% + 180px);
  will-change: transform;
}
.hh-c-grid,
.hh-c-rhumb,
.hh-c-depth,
.hh-c-rose circle,
.hh-c-rose path {
  fill: none;
  stroke: var(--chart-ink);
  vector-effect: non-scaling-stroke;
}
.hh-c-grid {
  stroke-opacity: 0.12;
  stroke-width: 1;
}
.hh-c-rhumb {
  stroke-opacity: 0.1;
  stroke-width: 1;
  stroke-dasharray: 6 6;
}
.hh-c-depth {
  stroke-opacity: 0.3;
  stroke-width: 0.8;
}
.hh-c-depth.idx {
  stroke-opacity: 0.5;
  stroke-width: 1.4;
}
.hh-c-land {
  fill: var(--land);
}
.hh-c-label {
  font: italic 22px Georgia, 'Times New Roman', serif;
  fill: var(--chart-ink);
  fill-opacity: 0.65;
  paint-order: stroke;
  stroke: var(--paper);
  stroke-width: 6px;
}
.hh-c-rose circle,
.hh-c-rose path {
  stroke-opacity: 0.45;
  stroke-width: 1.2;
}
.hh-c-rose path.fill {
  fill: var(--chart-ink);
  fill-opacity: 0.35;
}
.hh-c-rose text {
  font: 600 26px Georgia, 'Times New Roman', serif;
  fill: var(--chart-ink);
  fill-opacity: 0.6;
  text-anchor: middle;
}
/* 当前大类的"海域"：卡牌后面一片大类色的光 */
.hh-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(42% 46% at var(--gx, 50%) var(--gy, 34%), color-mix(in srgb, var(--cat) 26%, transparent), transparent 72%);
}
.hh-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 55%, rgba(120, 90, 40, 0.22) 100%);
}
@media (prefers-color-scheme: dark) {
  .hh-sky {
    background: radial-gradient(120% 90% at 35% 55%, #0f3354 0%, #0a2440 45%, #061529 100%);
  }
  .hh-grain {
    opacity: 1;
    mix-blend-mode: normal;
    background: repeating-linear-gradient(0deg, rgba(62, 224, 207, 0.035) 0 1px, transparent 1px 3px);
  }
  .hh-chart {
    filter: drop-shadow(0 0 3px rgba(62, 224, 207, 0.45));
  }
  .hh-glow {
    background: radial-gradient(42% 46% at var(--gx, 50%) var(--gy, 34%), color-mix(in srgb, var(--cat) 20%, transparent), transparent 72%);
  }
  .hh-vignette {
    background: radial-gradient(ellipse at center, transparent 50%, rgba(0, 0, 0, 0.5) 100%);
  }
}

/* ---------------------------------------------------------------- 顶栏
   标题用圆润的 Fredoka（汉字配站酷快乐体），副标题用 Nunito；字体子集在 css/fonts.css */
.hh {
  --font-display: 'KG Display', 'Baloo 2', 'Arial Rounded MT Bold', var(--sans);
  --font-rounded: 'KG Rounded', 'Nunito', var(--sans);
}
.hh-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px 24px;
  padding: 16px var(--gutter) 0;
}
.hh-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
/* 左上角：大类色的黏土徽章，里面是一只小舵轮；它是回 nphunter 主页的链接 */
.hh-logo {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  flex-shrink: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, color-mix(in oklab, var(--cat) 22%, white), color-mix(in oklab, var(--cat) 58%, white) 52%, color-mix(in oklab, var(--cat) 85%, #31405e));
  box-shadow: 3px 6px 12px -3px rgba(20, 30, 60, 0.4), inset -3px -4px 7px rgba(0, 0, 0, 0.14), inset 3px 3px 5px rgba(255, 255, 255, 0.7);
  color: color-mix(in oklab, var(--cat) 40%, #13213a);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.hh-logo-mark {
  display: grid;
  transition: transform 0.6s cubic-bezier(0.3, 1.4, 0.5, 1);
}
.hh-logo:hover {
  transform: scale(1.06);
}
/* 悬停时小舵轮转一下 */
.hh-logo:hover .hh-logo-mark {
  transform: rotate(-103deg);
}
.hh-logo:active {
  transform: scale(0.95);
}
.hh-logo:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 4px;
}
.hh-logo-mark svg {
  display: block;
  width: 40px;
  height: 40px;
}
.hh-brand h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: 0.01em;
}
.hh-kube {
  color: color-mix(in oklab, var(--cat) 75%, var(--ink));
}
.hh-brand p {
  margin: 3px 0 0;
  font-family: var(--font-rounded);
  font-size: 14px;
  font-weight: 600;
  color: var(--soft);
}
.hh-tools {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.hh-lang {
  min-height: 32px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass-strong);
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.hh-lang:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

/* ---------------------------------------------------------------- 布局
   窄屏：卡牌在上，舵轮在下只露出上面大半个；
   宽屏（≥ 960px）：舵轮完整地放在左栏，指针朝右指向卡牌。 */
.hh-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.hh-panel {
  order: 1;
  min-width: 0;
}
.hh-helm {
  order: 2;
  position: relative;
  flex: 1 1 0;
  min-height: 270px;
  padding-top: 24px;
  /* 被遮罩挡住的下半个舵轮不撑出页面滚动；上方留 24px 给指针 */
  overflow-y: clip;
  container-type: size;
  -webkit-mask-image: linear-gradient(180deg, #000 86%, transparent);
  mask-image: linear-gradient(180deg, #000 86%, transparent);
}
.hh-wheel {
  --wd: clamp(280px, min(94cqw, 100cqh / 0.76), 600px);
  --kd: max(42px, calc(var(--wd) * 0.1));
  /* 黏土色：都从 --cat 推出 */
  --clay: color-mix(in oklab, var(--cat) 52%, white);
  --clay-hi: color-mix(in oklab, var(--cat) 20%, white);
  --clay-lo: color-mix(in oklab, var(--cat) 80%, #31405e);
  --clay-deep: color-mix(in oklab, var(--cat) 60%, #1f2a44);
  --clay-ink: color-mix(in oklab, var(--cat) 38%, #13213a);
  position: absolute;
  top: calc(24px + var(--wd) * 0.045);
  left: 50%;
  width: var(--wd);
  height: var(--wd);
  margin-left: calc(var(--wd) / -2);
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
  cursor: grab;
}
@media (min-width: 960px) {
  .hh {
    --active: 90;
  }
  .hh-glow {
    --gx: 68%;
    --gy: 52%;
  }
  .hh-main {
    display: grid;
    grid-template-columns: minmax(0, clamp(400px, 40vw, 720px)) minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr);
    align-items: center;
  }
  .hh-helm,
  .hh-panel {
    order: 0;
  }
  .hh-helm {
    align-self: stretch;
    min-height: 460px;
    padding: 0;
    overflow: visible;
    -webkit-mask-image: none;
    mask-image: none;
  }
  .hh-wheel {
    --wd: clamp(320px, min(86cqw, 86cqh), 660px);
    top: 50%;
    margin-top: calc(var(--wd) / -2);
    touch-action: none;
  }
  .hh-panel {
    padding: 0 var(--gutter) 24px 0;
  }
}

/* ---------------------------------------------------------------- 大类标题：只有名字和星数 */
.hh-cat {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding: 10px 16px 0;
  animation: hh-in 0.45s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
.hh-cat h2 {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 2.8vw, 34px);
  font-weight: 600;
}
.hh-cat-icon {
  display: inline-grid;
  place-items: center;
  width: 1.5em;
  height: 1.5em;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, color-mix(in oklab, var(--cat) 22%, white), color-mix(in oklab, var(--cat) 58%, white) 52%, color-mix(in oklab, var(--cat) 85%, #31405e));
  box-shadow: 2px 4px 8px -2px rgba(20, 30, 60, 0.35), inset -2px -3px 5px rgba(0, 0, 0, 0.12), inset 2px 2px 4px rgba(255, 255, 255, 0.65);
  color: color-mix(in oklab, var(--cat) 38%, #13213a);
}
.hh-cat-icon .kg-icon {
  width: 56%;
  height: 56%;
}
.hh-cat-stars {
  padding: 3px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass-strong);
  font-size: 13px;
  font-weight: 700;
  color: var(--soft);
}
@keyframes hh-in {
  from {
    opacity: 0;
    transform: translateX(calc(var(--dir, 0) * 28px));
  }
}

/* ---------------------------------------------------------------- 卡牌：一手牌
   hub.js 给每张牌设 --x / --y / --r 摆成扇形；悬停抬起、跟着鼠标倾斜（--rx / --ry）、反光（--sx） */
.hh-deck {
  --kw: clamp(140px, 11.5vw, 178px);
  --kh: calc(var(--kw) * 1.42);
  position: relative;
  height: calc(var(--kh) + 64px);
  margin-top: 6px;
  perspective: 1000px;
}
.kc {
  --x: 0px;
  --y: 0px;
  --r: 0deg;
  --rx: 0deg;
  --ry: 0deg;
  position: absolute;
  bottom: 30px;
  left: 50%;
  width: var(--kw);
  height: var(--kh);
  margin-left: calc(var(--kw) / -2);
  transform: translate(var(--x), var(--y)) rotate(var(--r));
  transform-origin: 50% 110%;
  transition: transform 0.4s cubic-bezier(0.34, 1.4, 0.64, 1);
}
.kc:hover,
.kc:focus-within {
  z-index: 30 !important;
  transform: translate(var(--x), calc(var(--y) - 22px)) rotate(0deg) scale(1.05);
}
.kc-flip {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transform: rotateX(var(--rx)) rotateY(var(--ry));
  transition: transform 0.55s cubic-bezier(0.3, 1.25, 0.5, 1);
}
.kc-face {
  position: absolute;
  inset: 0;
  display: flex;
  padding: 5px;
  border: 0;
  border-radius: 16px;
  /* 牌框：大类色的"箔"边 */
  background: linear-gradient(150deg, color-mix(in oklab, var(--cat) 88%, white), color-mix(in oklab, var(--cat) 72%, #1b2a44));
  box-shadow: var(--card-shadow);
  color: var(--card-ink);
  font: inherit;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}
.kc-face:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
}
.kc-back {
  transform: rotateY(180deg);
}
.kc-inner {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 0;
  overflow: hidden;
  border-radius: 12px;
  background: var(--card-paper);
}
/* 插画区：图标外面一圈圈等深线，和背景的海图呼应 */
.kc-art {
  position: relative;
  flex: 1;
  align-self: stretch;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 50% 46%, color-mix(in oklab, var(--cat) 16%, var(--card-paper)) 0 30%, transparent 31%),
    repeating-radial-gradient(circle at 50% 46%, transparent 0 9px, color-mix(in oklab, var(--cat) 24%, transparent) 9px 10px),
    color-mix(in oklab, var(--cat) 8%, var(--card-paper));
}
.kc-art .kg-icon {
  width: 42%;
  height: auto;
  aspect-ratio: 1;
  color: color-mix(in oklab, var(--cat) 60%, var(--card-ink));
  transition: transform 0.35s cubic-bezier(0.34, 1.4, 0.64, 1);
}
.kc:hover .kc-art .kg-icon {
  transform: scale(1.08) rotate(-5deg);
}
.kc-sheen {
  position: absolute;
  inset: 0;
  opacity: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, 0.6) 45%, transparent 60%);
  background-size: 250% 100%;
  background-position: var(--sx, 100%) 0;
  mix-blend-mode: soft-light;
  transition: opacity 0.3s;
}
.kc:hover .kc-sheen {
  opacity: 1;
}
.kc-title {
  display: block;
  padding: 8px 8px 2px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.3;
}
.kc-stars {
  padding-bottom: 9px;
  color: #f0a815;
  font-size: 14px;
  letter-spacing: 2px;
}
.kc-stars i {
  font-style: normal;
  color: var(--star-off);
}
.kc-demo {
  padding-bottom: 9px;
  font-size: 12px;
  color: var(--muted);
}
.kc-back .kc-inner {
  justify-content: center;
  gap: 8px;
  padding: 12px;
}
.kc-back .kc-title {
  padding: 0;
  font-size: 15px;
}
.kc-blurb {
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--soft);
}
.kc-count {
  font-size: 12px;
  color: var(--muted);
}
.kc-go {
  margin-top: 4px;
  padding: 6px 16px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--cat) 78%, #1b2a44);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}
/* 未上线：背面朝上的牌 */
.kc.soon .kc-face {
  background: repeating-linear-gradient(45deg, color-mix(in oklab, var(--cat) 40%, var(--soon-a)) 0 8px, color-mix(in oklab, var(--cat) 14%, var(--soon-b)) 8px 16px);
  cursor: default;
}
.kc.soon .kc-inner {
  justify-content: center;
  gap: 4px;
  border: 1.5px dashed color-mix(in oklab, var(--cat) 50%, transparent);
  background: color-mix(in srgb, var(--card-paper) 72%, transparent);
}
.kc-q {
  font-size: 44px;
  font-weight: 800;
  line-height: 1;
  color: color-mix(in oklab, var(--cat) 60%, var(--card-ink));
}
.kc-soon {
  font-size: 12px;
  font-weight: 700;
  color: var(--soft);
}
.kc-soon-title {
  padding: 0 8px;
  font-size: 11.5px;
  line-height: 1.35;
  color: var(--muted);
}

/* ---------------------------------------------------------------- 舵轮：黏土软 3D
   转动层是辐条和轮毂法兰；轮缘、轮心盖、把手球的光影都不转 */
.hh-wheel.dragging {
  cursor: grabbing;
}
.hh-wheel::before {
  content: '';
  position: absolute;
  inset: 13%;
  border-radius: 50%;
  pointer-events: none;
  box-shadow: 8px 16px 34px -4px var(--wheel-shadow);
}
.hh-wheel-spin,
.hh-wheel-rim {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}
.hh-wheel-spin {
  will-change: transform;
}
.hh-sp {
  stroke: var(--clay-lo);
  stroke-width: 5.4;
  stroke-linecap: round;
}
.hh-sp-hl {
  stroke: var(--clay-hi);
  stroke-width: 1.3;
  stroke-linecap: round;
}
.hh-flange {
  fill: var(--clay);
  stroke: var(--clay-lo);
  stroke-width: 0.6;
}
.hh-bolt {
  fill: var(--clay-hi);
  stroke: var(--clay-lo);
  stroke-width: 0.3;
}
.hh-rim {
  fill: none;
  stroke: url(#hh-rim-g);
  stroke-width: 9;
}
.hh-wheel-rim .s0 {
  stop-color: var(--clay-deep);
}
.hh-wheel-rim .s1,
.hh-wheel-rim .s3 {
  stop-color: var(--clay);
}
.hh-wheel-rim .s2 {
  stop-color: var(--clay-hi);
}
.hh-rim-light {
  fill: none;
  stroke: rgba(255, 255, 255, 0.6);
  stroke-width: 2.4;
  stroke-linecap: round;
}
.hh-rim-shade {
  fill: none;
  stroke: rgba(0, 0, 0, 0.14);
  stroke-width: 2.6;
  stroke-linecap: round;
}
.hh-hub {
  position: absolute;
  top: 50%;
  left: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 26%;
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle at 36% 30%, var(--clay-hi) 0%, var(--clay) 55%, var(--clay-lo) 100%);
  box-shadow: inset -3px -4px 8px rgba(0, 0, 0, 0.12), inset 3px 3px 6px rgba(255, 255, 255, 0.5), 3px 6px 12px -2px rgba(20, 30, 60, 0.3);
  color: var(--clay-ink);
  line-height: 1.1;
  pointer-events: none;
}
.hh-hub-got {
  font-size: clamp(13px, calc(var(--wd) * 0.036), 21px);
  font-weight: 800;
}
.hh-hub-total {
  font-size: clamp(10px, calc(var(--wd) * 0.022), 12px);
  font-weight: 600;
  opacity: 0.8;
}
.hh-pointer {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  transform: rotate(calc(var(--active) * 1deg)) translateY(calc(-1 * (var(--wd) * 0.46 + var(--kd) * 0.6 + 14px)));
  pointer-events: none;
}
.hh-pointer::before {
  content: '';
  position: absolute;
  top: -7px;
  left: -9px;
  width: 18px;
  height: 14px;
  background: var(--clay-lo);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}
/* 换大类时从轮心发出的一圈波 */
.hh-ping {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 76%;
  aspect-ratio: 1;
  border: 2px solid var(--ping);
  border-radius: 50%;
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.55);
  pointer-events: none;
}
.hh-ping.go {
  animation: hh-ping 1.1s cubic-bezier(0.2, 0.7, 0.3, 1);
}
@keyframes hh-ping {
  from {
    opacity: 0.9;
    transform: translate(-50%, -50%) scale(0.55);
  }
  to {
    opacity: 0;
    transform: translate(-50%, -50%) scale(1.9);
  }
}
/* 声呐屏上舵轮周围的距离圈和扫描线，只在深色出现 */
.hh-sonar {
  display: none;
}
@media (prefers-color-scheme: dark) {
  .hh-sonar {
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    width: 170%;
    aspect-ratio: 1;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    background: repeating-radial-gradient(circle, transparent 0 calc(var(--wd) * 0.14 - 1px), rgba(62, 224, 207, 0.16) calc(var(--wd) * 0.14 - 1px) calc(var(--wd) * 0.14));
    -webkit-mask-image: radial-gradient(circle, #000 35%, transparent 70%);
    mask-image: radial-gradient(circle, #000 35%, transparent 70%);
    pointer-events: none;
  }
  .hh-sonar::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: conic-gradient(from 0deg, rgba(62, 224, 207, 0.13), transparent 50deg);
    animation: hh-sweep 7s linear infinite;
  }
}
@keyframes hh-sweep {
  to {
    transform: rotate(360deg);
  }
}
.hh-knobs {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hh-knob {
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--kd);
  height: var(--kd);
  margin: calc(var(--kd) / -2) 0 0 calc(var(--kd) / -2);
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: none;
  cursor: pointer;
  pointer-events: auto;
  will-change: transform;
}
.hh-knob:focus-visible {
  outline: none;
}
/* 把手：每个大类一个黏土小球，里面是线性图标 */
.hh-ball {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, color-mix(in oklab, var(--c) 22%, white) 0%, color-mix(in oklab, var(--c) 58%, white) 50%, color-mix(in oklab, var(--c) 85%, #31405e) 100%);
  box-shadow: 2px 4px 8px -1px rgba(20, 30, 60, 0.35), inset -2px -3px 5px rgba(0, 0, 0, 0.12), inset 2px 2px 4px rgba(255, 255, 255, 0.65);
  color: color-mix(in oklab, var(--c) 38%, #13213a);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s;
}
.hh-ball .kg-icon {
  width: 50%;
  height: 50%;
}
.hh-knob:hover .hh-ball {
  transform: scale(1.08);
}
.hh-knob.is-on .hh-ball {
  transform: scale(1.22);
  box-shadow: 0 0 0 3px var(--plate), 0 0 0 5.5px var(--c), 0 0 22px 2px color-mix(in srgb, var(--c) 55%, transparent), 2px 4px 8px -1px rgba(20, 30, 60, 0.35), inset -2px -3px 5px rgba(0, 0, 0, 0.12), inset 2px 2px 4px rgba(255, 255, 255, 0.65);
}
.hh-knob:active .hh-ball {
  transform: scale(0.94);
}
.hh-knob:focus-visible .hh-ball {
  outline: 2px solid var(--ink);
  outline-offset: 6px;
}
.hh-nameplate {
  position: absolute;
  top: 50%;
  left: 50%;
  padding: 1px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--plate);
  box-shadow: 0 2px 4px -1px rgba(20, 30, 60, 0.25);
  color: var(--ink);
  font-size: 11.5px;
  font-weight: 700;
  white-space: nowrap;
  transform: translate(-50%, -50%) translate(var(--px, 0), var(--py, 0));
  transition: background-color 0.3s, border-color 0.3s;
}
.hh-knob.is-on .hh-nameplate {
  border-color: color-mix(in oklab, var(--c) 60%, transparent);
  background: color-mix(in oklab, var(--c) 30%, var(--plate));
}

/* ---------------------------------------------------------------- 页脚 */
.hh-foot {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  padding: 4px 16px 20px;
  font-size: 12.5px;
  color: var(--muted);
}
.hh-reset {
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--glass);
  color: var(--soft);
  font-size: 12px;
  cursor: pointer;
}
.hh-reset:hover {
  color: var(--ink);
}

@media (max-width: 640px) {
  .hh-head {
    gap: 8px;
    padding-top: 12px;
  }
  .hh-brand {
    gap: 10px;
  }
  .hh-logo {
    width: 48px;
    height: 48px;
  }
  .hh-logo-mark svg {
    width: 32px;
    height: 32px;
  }
  .hh-brand h1 {
    font-size: 26px;
  }
  .hh-brand p {
    font-size: 12.5px;
  }
  .hh-cat h2 {
    font-size: 26px;
  }
  .hh-deck {
    --kw: min(31vw, 132px);
    height: calc(var(--kh) + 48px);
  }
  .kc {
    bottom: 22px;
  }
  .kc-title {
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hh,
  .hh-ball,
  .kc,
  .kc-flip {
    transition: none;
  }
  .hh-cat,
  .hh-sonar::after {
    animation: none;
  }
  .hh-ping {
    display: none;
  }
}
/* A full course needs legible, individually reachable cards rather than a dense fan. */
.hh-deck.expanded { display:grid; grid-template-columns:repeat(auto-fit,minmax(140px,1fr)); gap:14px; height:auto; margin:22px 16px 12px; padding:0 6px; }
.hh-deck.expanded .kc { position:relative; left:auto; bottom:auto; margin:0; width:100%; height:164px; transform:none; }
.hh-deck.expanded .kc:hover,.hh-deck.expanded .kc:focus-within { transform:translateY(-5px); }
.hh-deck.expanded .kc-art .kg-icon { width:45px; }
.hh-deck.expanded .kc-title { min-height:31px; display:flex; align-items:center; justify-content:center; }
@media (max-width:600px) { .hh-deck.expanded { grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px; margin:16px 20px; }.hh-deck.expanded .kc { height:153px; } }