:root {
  --ink: #26302a;
  --muted: #8d9690;
  --line: #ebe5dc;
  --paper: #fffdf8;
  --soft: #f7f3eb;
  --accent: #c36e5f;
  --accent-strong: #b96152;
  --dark: #253029;
  --shadow: 0 18px 50px rgba(42, 36, 26, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: #fbfaf7;
  color: var(--ink);
  font-family: ui-rounded, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.98), rgba(251, 250, 247, 0.95) 46%, #f8f4ed 100%);
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
  cursor: pointer;
}

svg {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.app-shell {
  width: min(100%, 1240px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 18px 18px 28px;
}

.topbar {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  min-height: 62px;
  margin-bottom: 8px;
}

.title-block {
  text-align: center;
}

.title-block h1 {
  margin: 0;
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  line-height: 1.2;
  letter-spacing: 0;
}

.title-block p {
  margin: 12px 0 0;
  color: var(--accent-strong);
  font-weight: 750;
}

.icon-button,
.guide-button,
.floating-tool,
.round-button,
.step-button {
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 4px 16px rgba(57, 51, 42, 0.06);
}

.icon-button {
  width: 46px;
  height: 46px;
  border-radius: 50%;
}

.icon-button.ghost {
  background: rgba(255, 255, 255, 0.55);
}

.icon-button.muted {
  background: var(--soft);
  border: 0;
  color: #8d928d;
}

.guide-button {
  position: absolute;
  right: 0;
  top: 2px;
  min-width: 86px;
  height: 42px;
  grid-auto-flow: column;
  gap: 6px;
  padding: 0 12px;
  border: 0;
  background: transparent;
  color: #8d9690;
  box-shadow: none;
  font-weight: 750;
}

.workspace {
  display: grid;
  gap: 18px;
}

.studio-panel {
  position: relative;
  min-width: 0;
}

.metrics-row {
  display: flex;
  align-items: center;
  min-height: 32px;
  gap: 10px;
  margin: 0 0 6px 2px;
}

.metric {
  color: #98a09a;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 750;
  white-space: nowrap;
}

.metric.price {
  color: var(--accent-strong);
}

.divider {
  width: 1px;
  height: 20px;
  background: #dad5ce;
}

.plate-wrap {
  position: relative;
  display: grid;
  place-items: center;
  min-height: min(78vw, 620px);
  padding: 8px 0 6px;
}

.plate {
  position: relative;
  width: min(78vw, 580px);
  aspect-ratio: 1;
  overflow: visible;
  border-radius: 50%;
  background:
    radial-gradient(circle at 48% 45%, rgba(255, 255, 255, 0.74), rgba(255, 255, 255, 0.1) 40%, rgba(0, 0, 0, 0.08) 72%, rgba(80, 43, 21, 0.18) 100%),
    radial-gradient(circle, rgba(231, 238, 231, 0.9) 0 45%, rgba(176, 202, 194, 0.86) 74%, rgba(92, 119, 109, 0.75) 100%);
  border: 7px solid rgba(166, 101, 57, 0.76);
  box-shadow:
    inset 0 0 0 4px rgba(255, 255, 255, 0.45),
    inset 0 0 36px rgba(49, 62, 53, 0.28),
    0 24px 54px rgba(36, 32, 25, 0.15);
  transition: background 180ms ease;
}

.plate::before {
  content: "";
  position: absolute;
  inset: 7%;
  border-radius: 50%;
  background:
    repeating-radial-gradient(circle at 50% 50%, rgba(66, 82, 72, 0.08) 0 1px, transparent 1px 14px),
    repeating-linear-gradient(30deg, rgba(255, 255, 255, 0.2) 0 2px, transparent 2px 28px);
  opacity: 0.75;
  mix-blend-mode: multiply;
  pointer-events: none;
}

.plate::after {
  content: "";
  position: absolute;
  inset: 7%;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.68);
  box-shadow: inset -18px -20px 22px rgba(255, 255, 255, 0.36);
  pointer-events: none;
}

.plate[data-bg="cream"] {
  background:
    radial-gradient(circle at 50% 46%, rgba(255, 255, 255, 0.76), rgba(255, 255, 255, 0.22) 48%, rgba(95, 84, 62, 0.08) 100%),
    linear-gradient(135deg, #f3efe5, #ded6c8);
  border-color: rgba(196, 181, 158, 0.88);
}

.plate[data-bg="rain"] {
  background:
    radial-gradient(circle at 48% 45%, rgba(255, 255, 255, 0.72), rgba(213, 233, 229, 0.28) 40%, rgba(70, 107, 99, 0.16) 100%),
    linear-gradient(145deg, #e6f0eb, #9ab6ab);
  border-color: rgba(166, 101, 57, 0.78);
}

.plate[data-bg="blue"] {
  background:
    radial-gradient(circle at 46% 52%, rgba(29, 94, 125, 0.4), rgba(93, 178, 210, 0.1) 36%, rgba(12, 99, 138, 0.24) 72%),
    linear-gradient(135deg, #aee0ed, #3f9dc3);
  border-color: rgba(82, 151, 179, 0.9);
}

.plate-brand {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: rgba(104, 96, 84, 0.18);
  font-size: clamp(1rem, 4vw, 2rem);
  font-weight: 850;
  line-height: 1.05;
  text-align: center;
  transform: rotate(-4deg);
  pointer-events: none;
}

.design-layer {
  position: absolute;
  inset: 0;
  z-index: 2;
  overflow: visible;
  touch-action: none;
}

.bead {
  position: absolute;
  left: 0;
  top: 0;
  width: var(--size);
  height: var(--size);
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 22%, rgba(255, 255, 255, 0.98) 0 12%, rgba(255, 255, 255, 0.42) 13% 24%, transparent 25%),
    radial-gradient(circle at 66% 72%, var(--glow), transparent 42%),
    linear-gradient(135deg, var(--color), var(--color2));
  box-shadow:
    inset 5px 6px 10px rgba(255, 255, 255, 0.35),
    inset -7px -8px 12px rgba(25, 31, 28, 0.18),
    0 7px 10px rgba(41, 35, 26, 0.18);
  cursor: grab;
  touch-action: none;
  transform: translate(calc(var(--x) - 50%), calc(var(--y) - 50%)) rotate(var(--rot));
  user-select: none;
  will-change: transform;
}

.bead.dragging {
  cursor: grabbing;
  z-index: 5;
}

.bead::after {
  content: "";
  position: absolute;
  inset: 18% 46%;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.46);
  box-shadow: 0 0 0 1px rgba(66, 60, 50, 0.12);
  transform: rotate(38deg);
}

.bead.square {
  border-radius: 22%;
}

.bead.pebble {
  border-radius: 43% 57% 48% 52%;
}

.bead.spacer {
  border-radius: 28%;
  background:
    radial-gradient(circle at 42% 32%, rgba(255, 255, 255, 0.85), transparent 20%),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.42) 0 2px, transparent 2px 6px),
    linear-gradient(135deg, var(--color), var(--color2));
}

.bead.wood {
  background:
    radial-gradient(circle at 30% 22%, rgba(255, 255, 255, 0.36), transparent 20%),
    repeating-linear-gradient(24deg, rgba(35, 20, 10, 0.34) 0 5px, transparent 5px 12px),
    linear-gradient(135deg, #402715, #a67848);
}

.bead.charm {
  border-radius: 24% 80% 28% 80%;
  background:
    radial-gradient(circle at 35% 22%, rgba(255, 255, 255, 0.95), transparent 20%),
    linear-gradient(135deg, #fbfbf4, #bfc4bb 55%, #ffffff);
}

.bead.charm::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -42%;
  width: 60%;
  height: 52%;
  border-left: 2px solid rgba(125, 124, 112, 0.75);
  border-top: 2px solid rgba(125, 124, 112, 0.75);
  transform: translateX(-50%) rotate(25deg);
}

.floating-tool {
  position: absolute;
  z-index: 4;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  color: #6d826f;
}

.floating-tool.left {
  left: 0;
  bottom: 12%;
}

.floating-tool.right {
  right: 0;
}

.floating-tool.top {
  top: 10%;
}

.floating-tool.bottom {
  bottom: 12%;
  color: #26302a;
}

.primary-actions {
  display: grid;
  grid-template-columns: auto repeat(3, 52px) minmax(132px, 1fr);
  gap: 10px;
  align-items: center;
}

.pill-button,
.dark-button,
.light-button,
.danger-button,
.text-button {
  min-height: 52px;
  border-radius: 999px;
  border: 1px solid var(--line);
  padding: 0 18px;
  font-weight: 850;
}

.pill-button {
  display: inline-grid;
  grid-auto-flow: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.86);
  white-space: nowrap;
}

.round-button {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  color: var(--ink);
}

.dark-button {
  display: inline-grid;
  grid-auto-flow: column;
  place-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  background: var(--dark);
  color: #fff;
  box-shadow: 0 4px 0 rgba(255, 255, 255, 0.72), 0 10px 20px rgba(28, 35, 30, 0.12);
}

.dark-button.cart {
  grid-column: 4 / -1;
}

.search-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0 0 8px;
}

.search-box {
  display: grid;
  grid-template-columns: 24px 1fr;
  align-items: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  color: #9aa29d;
}

.search-box input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-weight: 700;
}

.search-box input::placeholder {
  color: #b3bab6;
}

.type-tabs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  align-items: end;
  gap: 4px;
  margin-bottom: 8px;
}

.type-tab {
  position: relative;
  min-height: 42px;
  border: 0;
  background: transparent;
  color: #7f8a84;
  font-size: 1rem;
  font-weight: 850;
}

.type-tab.active {
  color: var(--ink);
}

.type-tab.active::after {
  content: "";
  position: absolute;
  left: 28%;
  right: 28%;
  bottom: 0;
  height: 5px;
  border-radius: 999px;
  background: var(--accent);
}

.catalog-panel {
  min-width: 0;
}

.catalog-body {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  min-height: 360px;
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-radius: 24px 24px 0 0;
  background: rgba(255, 255, 255, 0.86);
}

.side-tabs {
  padding: 12px 0;
  background: rgba(248, 246, 240, 0.82);
  overflow: auto;
}

.side-tab {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 58px;
  padding: 0 16px;
  border: 0;
  background: transparent;
  color: #8a928d;
  text-align: left;
  font-weight: 850;
}

.side-tab.active {
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
}

.side-tab.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 5px;
  border-radius: 0 999px 999px 0;
  background: var(--accent);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(136px, 1fr));
  gap: 10px;
  max-height: 52vh;
  min-height: 360px;
  padding: 12px;
  overflow: auto;
}

.product-card {
  display: grid;
  grid-template-rows: 114px auto auto 40px;
  overflow: hidden;
  min-height: 226px;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 6px 16px rgba(52, 43, 33, 0.05);
}

.product-visual {
  display: grid;
  place-items: center;
  padding-top: 8px;
}

.catalog-bead {
  position: relative;
  width: var(--card-size);
  height: var(--card-size);
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 22%, rgba(255, 255, 255, 0.98) 0 14%, rgba(255, 255, 255, 0.42) 15% 26%, transparent 27%),
    radial-gradient(circle at 66% 72%, var(--glow), transparent 42%),
    linear-gradient(135deg, var(--color), var(--color2));
  box-shadow:
    inset 5px 6px 10px rgba(255, 255, 255, 0.36),
    inset -9px -9px 14px rgba(32, 35, 30, 0.17),
    0 8px 14px rgba(36, 30, 22, 0.12);
}

.catalog-bead.square {
  border-radius: 20%;
}

.catalog-bead.pebble {
  border-radius: 43% 57% 48% 52%;
}

.catalog-bead.spacer {
  border-radius: 28%;
  background:
    radial-gradient(circle at 42% 32%, rgba(255, 255, 255, 0.85), transparent 20%),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.42) 0 2px, transparent 2px 6px),
    linear-gradient(135deg, var(--color), var(--color2));
}

.catalog-bead.wood {
  background:
    radial-gradient(circle at 30% 22%, rgba(255, 255, 255, 0.36), transparent 20%),
    repeating-linear-gradient(24deg, rgba(35, 20, 10, 0.34) 0 5px, transparent 5px 12px),
    linear-gradient(135deg, #402715, #a67848);
}

.catalog-bead.charm {
  border-radius: 24% 80% 28% 80%;
}

.product-card h3 {
  margin: 0;
  padding: 0 10px;
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.3;
  text-align: center;
}

.product-card p {
  margin: 6px 0 8px;
  padding: 0 10px;
  color: #858d88;
  font-style: italic;
  font-weight: 600;
  text-align: center;
}

.product-count {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  border-top: 1px solid var(--line);
}

.product-count button {
  border: 0;
  background: transparent;
  color: #6d7770;
  font-size: 1.45rem;
  font-weight: 850;
}

.product-count span {
  background: var(--line);
}

.empty-state {
  grid-column: 1 / -1;
  display: grid;
  place-items: center;
  min-height: 260px;
  color: #8c948f;
  font-weight: 750;
  text-align: center;
}

.toast {
  position: fixed;
  left: 50%;
  top: 92px;
  z-index: 30;
  max-width: min(520px, calc(100vw - 36px));
  padding: 14px 24px;
  border-radius: 999px;
  background: var(--dark);
  color: #fff;
  font-weight: 850;
  text-align: center;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translate(-50%, -12px);
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.modal {
  width: min(92vw, 560px);
  padding: 0;
  border: 0;
  border-radius: 26px;
  background: transparent;
  color: var(--ink);
}

.modal::backdrop {
  background: rgba(30, 31, 28, 0.46);
  backdrop-filter: blur(5px);
}

.modal-card {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 26px;
  border-radius: 26px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.modal-head h2,
.confirm-modal h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 1.35rem;
}

.wrist-control {
  display: grid;
  grid-template-columns: 64px 1fr 64px;
  gap: 14px;
  align-items: center;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fbf8f1;
}

.step-button {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  color: #6e7771;
  font-size: 2rem;
  font-weight: 850;
}

.wrist-value {
  display: grid;
  justify-items: center;
}

.wrist-value strong {
  font-size: clamp(3.2rem, 12vw, 5rem);
  line-height: 1;
}

.wrist-value span {
  color: #9ba19d;
  font-size: 1.05rem;
  font-weight: 850;
}

#wristRange {
  grid-column: 1 / -1;
  width: 100%;
  accent-color: var(--dark);
}

.range-labels {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  color: #8c938e;
  font-weight: 750;
}

.modal-copy {
  margin: 0;
  color: #8b938e;
  font-size: 1.05rem;
  font-weight: 750;
  line-height: 1.6;
  text-align: center;
}

.modal-action {
  width: min(100%, 330px);
  margin: 0 auto;
}

.light-button {
  width: min(100%, 330px);
  margin: 0 auto;
  background: #f7f1e6;
  color: var(--ink);
}

.confirm-modal {
  justify-items: center;
  text-align: center;
}

.alert-icon {
  display: grid;
  place-items: center;
  width: 66px;
  height: 66px;
  border-radius: 50%;
  background: #f4e2dd;
  color: var(--accent-strong);
  font-size: 2rem;
  font-weight: 850;
}

.confirm-modal p {
  max-width: 430px;
  margin: 0;
  color: #8b938e;
  font-size: 1.05rem;
  font-weight: 750;
  line-height: 1.6;
}

.text-button {
  border: 0;
  background: transparent;
  color: #8b938e;
}

.danger-button {
  min-width: min(100%, 330px);
  border: 0;
  background: var(--accent);
  color: #fff;
}

.cart-lines {
  display: grid;
  gap: 10px;
  max-height: 360px;
  overflow: auto;
}

.cart-line {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.cart-line strong,
.cart-line span {
  min-width: 0;
}

.cart-line small {
  color: #818b85;
  font-weight: 700;
}

.cart-total {
  display: flex;
  justify-content: space-between;
  padding-top: 4px;
  font-size: 1.25rem;
  font-weight: 850;
}

.guide-modal ol {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 1.4rem;
  color: #65706a;
  font-weight: 720;
  line-height: 1.7;
}

.zoom-modal {
  width: min(92vw, 760px);
}

.zoom-stage {
  display: grid;
  place-items: center;
  min-height: min(78vw, 620px);
}

.zoom-stage .plate {
  width: min(76vw, 620px);
}

@media (min-width: 880px) {
  .app-shell {
    padding-top: 26px;
  }

  .workspace {
    grid-template-columns: minmax(470px, 0.95fr) minmax(420px, 1fr);
    align-items: start;
  }

  .studio-panel {
    position: sticky;
    top: 20px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.66);
    box-shadow: 0 18px 40px rgba(55, 47, 36, 0.07);
  }

  .catalog-panel {
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.74);
    box-shadow: 0 18px 40px rgba(55, 47, 36, 0.07);
  }

  .plate-wrap {
    min-height: 530px;
  }

  .plate {
    width: min(44vw, 520px);
  }

  .primary-actions {
    grid-template-columns: auto repeat(3, 54px) 1fr;
  }

  .dark-button.cart {
    grid-column: auto;
  }

  .catalog-body {
    min-height: 620px;
    border-radius: 20px;
  }

  .product-grid {
    grid-template-columns: repeat(3, minmax(136px, 1fr));
    max-height: 680px;
  }
}

@media (max-width: 560px) {
  .app-shell {
    padding: 18px 10px 18px;
  }

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

  .guide-button {
    min-width: 72px;
    padding: 0 4px;
  }

  .plate-wrap {
    min-height: 380px;
    padding: 6px 0 4px;
  }

  .plate {
    width: min(82vw, 430px);
  }

  .floating-tool {
    width: 46px;
    height: 46px;
  }

  .primary-actions {
    grid-template-columns: minmax(112px, 1fr) repeat(3, 52px);
    gap: 8px;
  }

  .dark-button {
    min-height: 48px;
  }

  #stringToggleButton {
    grid-column: 1 / 3;
  }

  .dark-button.cart {
    grid-column: 3 / -1;
    grid-row: 2;
  }

  .search-row {
    margin-top: 8px;
  }

  .catalog-body {
    grid-template-columns: 104px minmax(0, 1fr);
  }

  .product-grid {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
    gap: 8px;
    padding: 10px;
  }

  .product-card {
    grid-template-rows: 104px auto auto 38px;
    min-height: 214px;
  }

  .side-tab {
    min-height: 56px;
    padding-inline: 14px;
  }

  .wrist-control {
    grid-template-columns: 56px 1fr 56px;
    padding: 22px;
  }

  .step-button {
    width: 56px;
    height: 56px;
  }

  .modal-card {
    padding: 22px;
  }
}

@media (max-width: 380px) {
  .catalog-body {
    grid-template-columns: 92px minmax(0, 1fr);
  }

  .side-tab {
    font-size: 0.92rem;
  }

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