:root {
  --paper: #F6F4EF;
  --blue: #1E6BC6;
  --red: #F2441F;
  --safe-t: env(safe-area-inset-top, 0px);
  --safe-b: env(safe-area-inset-bottom, 0px);
}

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--paper);
  overscroll-behavior: none;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

/* Swiss：一套无衬线、一种墨色、靠字号和留白分层级 */
body {
  font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  color: var(--blue);
  -webkit-font-smoothing: antialiased;
}

canvas#c {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

/* ───────── 上：面包屑 + 最大的数字，居中 ───────── */

.top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: calc(var(--safe-t) + 16px) 16px 30px;
  background: linear-gradient(to bottom, var(--paper) 74%, rgba(246, 244, 239, 0));
}

.crumb {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .14em;
  line-height: 20px;
  white-space: nowrap;
}
.crumb a {
  color: inherit;
  text-decoration: none;
  pointer-events: auto;
  padding: 6px 0;
}
.crumb a:hover, .crumb a:focus-visible { text-decoration: underline; text-underline-offset: 4px; }
.crumb .sep { margin: 0 .8em; opacity: .4; }
.crumb #crumb-piece { font-weight: 700; }
body:not(.home) .crumb a { opacity: .62; }

.score {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 6px;
}
.num {
  position: relative;
  line-height: 1;
}
.num b {
  display: block;
  font-size: clamp(64px, min(21vw, 15vh), 140px);
  font-weight: 700;
  letter-spacing: -.045em;
  line-height: .9;
  font-variant-numeric: tabular-nums;
}
/* 单位挂在数字右下，不参与居中，数字本身正好在中线上 */
.num i {
  position: absolute;
  left: 100%;
  bottom: .5em;
  margin-left: .5em;
  font-style: normal;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .08em;
}
#next {
  margin-top: 10px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .14em;
  min-height: 14px;
}

/* ───────── 下：针法 + 按键顺序，居中；声音、语言在左右两角 ───────── */

.dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 34px 76px calc(var(--safe-b) + 20px);
  background: linear-gradient(to top, var(--paper) 62%, rgba(246, 244, 239, 0));
}
#stname {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .2em;
  text-indent: .2em;
  white-space: nowrap;
}
#caps {
  display: flex;
  gap: 8px;
}
.dock.labels #caps { gap: 10px; }
.cap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: opacity .12s ease;
}
.cap b {
  width: 40px;
  height: 40px;
  box-sizing: border-box;
  border: 1.5px solid var(--blue);
  background: var(--paper);
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 700;
  transition: transform .12s ease, background-color .12s ease, color .12s ease;
}
.cap small {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .08em;
  white-space: nowrap;
}
.cap svg { width: 20px; height: 20px; display: block; }
.cap.done { opacity: .3; }
.cap.next b {
  background: var(--blue);
  color: var(--paper);
  transform: translateY(-3px);
}
.red #stname, .red .cap { color: var(--red); }
.red .cap b { border-color: var(--red); }
.red .cap.next b { background: var(--red); color: var(--paper); }

#tip {
  font-size: 11px;
  letter-spacing: .12em;
  opacity: .72;
  min-height: 14px;
  text-align: center;
  transition: opacity .6s ease;
}
#tip.off { opacity: 0; }

.icon {
  position: fixed;
  z-index: 3;
  bottom: calc(var(--safe-b) + 14px);
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--blue);
  display: grid;
  place-items: center;
  cursor: pointer;
  opacity: .7;
}
.icon:hover, .icon:focus-visible { opacity: 1; }
.icon svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon .cut { stroke: var(--red); }
#snd { left: 12px; }
#lang { right: 12px; }

/* ───────── 提示 ───────── */

#toast {
  position: fixed;
  left: 50%;
  top: 42%;
  transform: translate(-50%, 8px);
  z-index: 4;
  pointer-events: none;
  text-align: center;
  padding: 14px 22px 13px;
  background: var(--paper);
  border: 1.5px solid var(--blue);
  opacity: 0;
  transition: opacity .35s ease, transform .35s ease;
  white-space: nowrap;
}
#toast.on { opacity: 1; transform: translate(-50%, 0); }
#toast em {
  display: block;
  font-style: normal;
  font-size: 11px;
  letter-spacing: .3em;
  text-indent: .3em;
  margin-bottom: 5px;
}
#toast strong {
  display: block;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .2em;
  text-indent: .2em;
}

/* ───────── 工作桌（首页） ───────── */

#home {
  position: fixed;
  inset: 0;
  z-index: 1;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(var(--safe-t) + 64px) 16px calc(var(--safe-b) + 84px);
  box-sizing: border-box;
}
.table {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: clamp(20px, 7vw, 96px);
}
.item {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--blue);
  text-decoration: none;
  outline-offset: 8px;
}
.item canvas {
  width: min(250px, 40vw);
  height: min(300px, 48vw);
  display: block;
  transform: rotate(var(--rot));
  transition: transform .35s cubic-bezier(.2, .8, .2, 1);
}
.item:hover canvas, .item:focus-visible canvas { transform: rotate(0deg) translateY(-6px); }
.item .no {
  margin-top: 14px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .14em;
}
.item .nm {
  margin-top: 4px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .08em;
}
.item .sub {
  margin-top: 6px;
  font-size: 11px;
  letter-spacing: .1em;
  opacity: .7;
  font-variant-numeric: tabular-nums;
}
.more {
  margin: 40px 0 0;
  font-size: 11px;
  letter-spacing: .14em;
  opacity: .55;
  text-align: center;
}

body.home #home { display: flex; }
body.home #c,
body.home .score,
body.home .dock { display: none; }
body.home .top { background: none; }

@media (max-width: 420px) {
  .dock { padding-left: 60px; padding-right: 60px; }
  .cap b { width: 36px; height: 36px; }
  .dock.labels #caps { gap: 6px; }
  .cap small { font-size: 9px; letter-spacing: .02em; }
}