:root {
  --wesm-yellow: #fbba00;
  --wesm-charcoal: #333334;
  --wesm-bg: #f6f3eb;
  --wesm-surface: #fffdf7;
  --wesm-line: #ddd5c5;
  --wesm-muted: #706c63;
  --wesm-soft-yellow: #fff3c2;
  --wesm-response-red: #b3261e;
  --focus: #9d6f00;
  --shadow: 0 18px 60px rgba(51, 51, 52, 0.12);
  color: var(--wesm-charcoal);
  background: var(--wesm-bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 980px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(246, 243, 235, 0.9)),
    var(--wesm-bg);
}

body.tts-audition-page {
  min-width: 0;
}

body.wesm-entry-page {
  min-width: 0;
}

button,
input {
  font: inherit;
}

button:focus-visible,
input:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--wesm-yellow) 70%, white);
  outline-offset: 3px;
}

a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--wesm-yellow) 70%, white);
  outline-offset: 3px;
}

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

.prototype-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: 1fr auto;
}

.exercise-frame {
  width: min(1420px, calc(100vw - 48px));
  min-height: min(800px, calc(100vh - 112px));
  margin: 16px auto 10px;
  display: grid;
  grid-template-rows: 76px 1fr 32px;
  background: var(--wesm-surface);
  border: 1px solid var(--wesm-line);
  box-shadow: var(--shadow);
}

.exercise-header {
  display: grid;
  grid-template-columns: 188px 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--wesm-line);
}

.brand-logo {
  width: 150px;
  max-height: 52px;
  object-fit: contain;
  object-position: left center;
}

.stage-status,
.session-status {
  display: flex;
  align-items: baseline;
  gap: 14px;
  color: var(--wesm-muted);
}

.eyebrow,
.session-status {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stage-status strong {
  color: var(--wesm-charcoal);
}

.exercise-grid {
  display: grid;
  place-items: center;
  padding: clamp(14px, 1.4vw, 20px);
}

.core-axis {
  width: min(980px, 100%);
  min-height: 0;
  display: grid;
  grid-template-rows: 278px 220px 136px;
  gap: 10px;
  align-items: start;
  justify-items: center;
}

.stimulus-wrap {
  position: relative;
  width: min(900px, 100%);
  display: grid;
  grid-template-rows: 210px 48px;
  place-items: center;
}

.chinese-stimulus {
  align-self: end;
  width: min(900px, 100%);
  text-align: center;
  line-height: 0.95;
  font-size: clamp(7.5rem, 13vw, 12.5rem);
  font-weight: 700;
  letter-spacing: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

.pinyin-anchor {
  min-height: 48px;
  padding-top: 8px;
  color: var(--wesm-muted);
  font-size: clamp(1.15rem, 1.7vw, 1.55rem);
  opacity: 0;
  transition: opacity 140ms ease;
}

.response-wrap {
  width: min(900px, 100%);
  display: grid;
  justify-items: center;
}

.response-input {
  width: 100%;
  height: 220px;
  padding: 16px 48px 22px;
  appearance: none;
  text-align: center;
  border: 2px solid var(--wesm-charcoal);
  border-radius: 8px;
  background: #fff;
  color: var(--wesm-response-red);
  font-size: clamp(7.5rem, 13vw, 12.5rem);
  font-weight: 700;
  line-height: 1.08;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  caret-color: var(--wesm-response-red);
}

.mnemonic-stack {
  min-height: 0;
  width: min(900px, 100%);
  height: 188px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

.aid-card {
  min-width: 0;
  display: grid;
  align-content: center;
  justify-items: center;
  opacity: 1;
  transition: opacity 140ms ease, filter 140ms ease;
}

.aid-label {
  color: var(--wesm-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.mnemonic-grid-card {
  min-height: 188px;
  width: 100%;
}

.mnemonic-grid {
  --keyword-fit-size: 42px;
  --mnemonic-cell-width: 1em;
  --mnemonic-column-gap: 0.55em;
  display: inline-grid;
  grid-auto-flow: column;
  grid-auto-columns: var(--mnemonic-cell-width);
  column-gap: var(--mnemonic-column-gap);
  align-items: start;
  justify-content: center;
  max-width: 100%;
  font-size: clamp(5.8rem, 9.8vw, 8.25rem);
  text-align: center;
}

.mnemonic-pair {
  width: 100%;
  min-width: 0;
  display: grid;
  grid-template-rows: 1.05em auto;
  justify-items: center;
  row-gap: 2px;
}

.emoji-item {
  min-width: 0;
  font-size: 1em;
  line-height: 1.05;
  white-space: nowrap;
}

.keyword-item {
  display: block;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  color: var(--wesm-charcoal);
  font-size: var(--keyword-fit-size);
  font-weight: 650;
  line-height: 1.08;
  overflow-wrap: anywhere;
  text-align: center;
}

.mnemonic-fallback {
  width: 100%;
  min-height: 160px;
  display: grid;
  place-items: center;
  gap: 8px;
  text-align: center;
}

.emoji-fallback {
  max-width: 100%;
  color: var(--wesm-charcoal);
  font-size: clamp(5.8rem, 9.8vw, 8.25rem);
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.keyword-fallback {
  max-width: min(780px, 100%);
  color: var(--wesm-charcoal);
  font-size: clamp(1.7rem, 3vw, 2.7rem);
  font-weight: 650;
  line-height: 1.1;
  overflow-wrap: anywhere;
}

.story-overlay-art {
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 30% 24%, rgba(251, 186, 0, 0.95), transparent 32%),
    linear-gradient(135deg, #fff8d8, #f0e6d4 58%, #333334 59%, #333334);
  border: 1px solid color-mix(in srgb, var(--wesm-yellow) 42%, var(--wesm-line));
  color: var(--wesm-charcoal);
  overflow: hidden;
}

.story-overlay-image {
  display: none;
  object-fit: contain;
  background: #111;
}

.story-overlay-image.is-active {
  display: block;
}

.feedback-region {
  display: flex;
  align-items: center;
  justify-content: center;
  border-top: 1px solid var(--wesm-line);
  color: var(--wesm-muted);
  font-size: 0.92rem;
}

.prototype-controls {
  width: min(1420px, calc(100vw - 48px));
  margin: 0 auto 4px;
  display: grid;
  grid-template-columns: auto auto 1fr auto;
  gap: 10px 18px;
  align-items: center;
  padding: 12px 14px;
  border: 1px dashed color-mix(in srgb, var(--wesm-charcoal) 45%, white);
  background: #ebe6da;
}

.control-heading {
  display: grid;
  gap: 2px;
}

.control-heading span {
  color: var(--wesm-muted);
  font-size: 0.8rem;
}

.control-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.prototype-controls button {
  min-height: 34px;
  border: 1px solid var(--wesm-line);
  border-radius: 6px;
  background: #fff;
  color: var(--wesm-charcoal);
  cursor: pointer;
}

.stage-indicator {
  min-height: 34px;
  min-width: 44px;
  display: inline-grid;
  place-items: center;
  padding: 1px 7px 2px;
  border: 1px solid var(--wesm-line);
  border-radius: 6px;
  background: #fff;
  color: var(--wesm-charcoal);
  user-select: none;
}

.prototype-controls button:disabled {
  color: var(--wesm-muted);
  cursor: default;
  opacity: 0.55;
}

.prototype-controls button[aria-pressed="true"],
.stage-indicator[aria-current="true"] {
  border-color: var(--wesm-charcoal);
  background: var(--wesm-yellow);
}

.prototype-controls button:focus-visible {
  outline-offset: 1px;
}

.story-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1.5vmin;
  background: rgba(12, 12, 12, 0.84);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease;
}

.story-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.story-overlay-art {
  width: min(97vw, 97vh);
  height: min(97vw, 97vh);
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.48);
  font-size: clamp(5rem, 18vmin, 13rem);
  font-weight: 800;
}

.live-record-nav {
  width: min(520px, 100%);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 18px;
  align-items: center;
  text-align: center;
}

.live-record-nav a,
.live-record-nav .disabled {
  min-width: 82px;
}

.live-record-nav a {
  color: var(--wesm-charcoal);
  font-weight: 650;
  text-decoration: none;
}

.live-record-nav .disabled {
  color: var(--wesm-muted);
}

.encounter-feedback {
  min-width: 190px;
  color: var(--wesm-muted);
  font-size: 1.05rem;
  font-weight: 650;
}

.audio-exercise-shell .encounter-feedback {
  min-width: 126px;
  color: var(--wesm-charcoal);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

.audio-start-gate,
.audio-recovery-gate {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  align-items: end;
  justify-items: center;
  padding: 24px 24px max(96px, 14vh);
  background: rgba(51, 51, 52, 0.28);
}

.audio-start-gate[hidden],
.audio-recovery-gate[hidden] {
  display: none;
}

.audio-start-gate button,
.audio-recovery-gate button {
  min-width: 180px;
  min-height: 52px;
  border: 2px solid var(--wesm-charcoal);
  border-radius: 8px;
  background: var(--wesm-yellow);
  color: var(--wesm-charcoal);
  cursor: pointer;
  font-weight: 750;
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.24);
}

.prototype-shell[data-pinyin="visible"] [data-aid="pinyin"] {
  opacity: 1;
  filter: none;
}

[data-aid].is-hidden,
.prototype-shell[data-pinyin="hidden"] [data-aid="pinyin"] {
  opacity: 0;
  filter: grayscale(0.2);
  pointer-events: none;
}

@media (max-height: 920px) {
  .exercise-frame {
    min-height: min(760px, calc(100vh - 84px));
    grid-template-rows: 68px 1fr 28px;
  }

  .core-axis {
    grid-template-rows: 230px 184px 104px;
    gap: 8px;
  }

  .stimulus-wrap {
    grid-template-rows: 164px 42px;
  }

  .chinese-stimulus {
    font-size: clamp(6rem, 11vw, 9rem);
  }

  .response-input {
    height: 166px;
    padding: 10px 38px 16px;
    font-size: clamp(5.9rem, 11vw, 9rem);
    line-height: 1.08;
  }

  .mnemonic-stack {
    height: 148px;
  }

  .mnemonic-grid-card {
    min-height: 148px;
  }

  .mnemonic-grid {
    font-size: clamp(4.35rem, 7.8vw, 6.2rem);
  }

  .keyword-item {
    line-height: 1.05;
  }

  .prototype-controls {
    gap: 5px 10px;
    padding: 6px 10px;
  }

  .control-heading span {
    display: none;
  }

  .control-group {
    gap: 6px;
  }

  .prototype-controls button {
    min-height: 28px;
  }

  .stage-indicator {
    min-height: 28px;
  }
}

@media (max-height: 820px) {
  .exercise-frame {
    min-height: min(650px, calc(100vh - 74px));
    grid-template-rows: 68px 1fr 22px;
  }

  .exercise-grid {
    padding: 10px 14px;
  }

  .core-axis {
    grid-template-rows: 206px 164px 96px;
    gap: 6px;
  }

  .stimulus-wrap {
    grid-template-rows: 148px 34px;
  }

  .response-input {
    height: 146px;
  }

  .mnemonic-stack,
  .mnemonic-grid-card {
    height: 116px;
    min-height: 116px;
  }

  .mnemonic-grid {
    font-size: clamp(3.75rem, 7vw, 5.2rem);
  }

  .keyword-item {
    font-size: min(var(--keyword-fit-size), 28px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.wesm-entry-shell,
.wesm-instructions-shell,
.wesm-result-shell {
  width: min(1240px, calc(100vw - 48px));
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  align-content: center;
  gap: clamp(16px, 1.85vh, 24px);
  padding: clamp(24px, 3.2vh, 46px) 0;
}

.wesm-instructions-shell {
  align-content: start;
  min-height: 0;
  padding-bottom: clamp(40px, 7vh, 76px);
}

.wesm-result-shell {
  align-content: start;
  padding-bottom: clamp(44px, 7vh, 78px);
}

.wesm-entry-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.wesm-entry-logo {
  width: clamp(176px, 15vw, 232px);
  height: auto;
  display: block;
}

.wesm-entry-hero {
  display: grid;
  gap: clamp(12px, 1.55vh, 18px);
  max-width: 1160px;
}

.wesm-entry-hero h1 {
  margin: 0;
  color: var(--wesm-charcoal);
  font-size: clamp(4rem, 7vw, 6.2rem);
  line-height: 0.94;
  letter-spacing: 0;
}

.wesm-entry-lede {
  margin: 0;
  max-width: 1040px;
  color: var(--wesm-charcoal);
  font-size: clamp(1.45rem, 2.05vw, 1.9rem);
  line-height: 1.32;
}

.wesm-entry-notice {
  max-width: 1120px;
  display: grid;
  gap: clamp(10px, 1.35vh, 16px);
  padding: clamp(18px, 2.25vh, 28px) clamp(22px, 3vw, 34px);
  border-left: 8px solid var(--wesm-yellow);
  background: color-mix(in srgb, var(--wesm-yellow) 13%, white);
}

.wesm-entry-notice h2 {
  margin: 0;
  color: var(--wesm-charcoal);
  font-size: clamp(1.45rem, 2.15vw, 1.9rem);
  line-height: 1.22;
}

.wesm-entry-notice p,
.wesm-entry-instruction,
.wesm-entry-copy p,
.wesm-instruction-list p,
.wesm-instruction-list li {
  margin: 0;
  color: var(--wesm-charcoal);
  font-size: clamp(1.24rem, 1.52vw, 1.44rem);
  line-height: 1.48;
}

.wesm-secondary-link,
.wesm-return-link a {
  width: fit-content;
  color: var(--wesm-charcoal);
  font-size: clamp(1.22rem, 1.45vw, 1.38rem);
  font-weight: 720;
  text-decoration-color: var(--wesm-yellow);
  text-decoration-thickness: 3px;
  text-underline-offset: 4px;
}

.wesm-secondary-link:focus-visible,
.wesm-return-link a:focus-visible,
.wesm-start-button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--wesm-yellow) 70%, white);
  outline-offset: 4px;
}

.wesm-entry-copy {
  max-width: 1120px;
  display: grid;
  gap: clamp(10px, 1.4vh, 16px);
}

.wesm-result-hero,
.wesm-result-section {
  max-width: 1120px;
  display: grid;
  gap: clamp(10px, 1.45vh, 16px);
}

.wesm-result-hero h1,
.wesm-result-section h2,
.wesm-result-summary h2 {
  margin: 0;
  color: var(--wesm-charcoal);
  letter-spacing: 0;
}

.wesm-result-hero h1 {
  font-size: clamp(3.1rem, 5.6vw, 5.2rem);
  line-height: 0.96;
}

.wesm-result-section h2,
.wesm-result-summary h2 {
  font-size: clamp(1.55rem, 2.2vw, 2rem);
  line-height: 1.18;
}

.wesm-result-hero p,
.wesm-result-section p,
.wesm-result-summary p {
  margin: 0;
  color: var(--wesm-charcoal);
  font-size: clamp(1.1rem, 1.35vw, 1.28rem);
  line-height: 1.52;
}

.wesm-result-summary {
  max-width: 1120px;
  display: grid;
  gap: clamp(12px, 1.6vh, 18px);
  padding: clamp(18px, 2.25vh, 28px) clamp(22px, 3vw, 34px);
  border-left: 8px solid var(--wesm-yellow);
  background: color-mix(in srgb, var(--wesm-yellow) 13%, white);
}

.wesm-result-summary dl {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.wesm-result-summary dl div {
  min-width: 0;
  display: grid;
  gap: 5px;
  padding: 12px;
  border: 1px solid var(--wesm-line);
  background: var(--wesm-surface);
}

.wesm-result-summary dt {
  color: var(--wesm-muted);
  font-size: 0.78rem;
  font-weight: 750;
  line-height: 1.25;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.wesm-result-summary dd {
  margin: 0;
  color: var(--wesm-charcoal);
  font-size: clamp(1.35rem, 2.2vw, 2rem);
  font-weight: 780;
  line-height: 1;
}

.wesm-result-table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--wesm-line);
  background: var(--wesm-surface);
}

.wesm-result-table {
  width: 100%;
  min-width: 780px;
  border-collapse: collapse;
}

.wesm-result-table th,
.wesm-result-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--wesm-line);
  text-align: left;
  vertical-align: top;
}

.wesm-result-table th {
  color: var(--wesm-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: color-mix(in srgb, var(--wesm-yellow) 10%, white);
}

.wesm-result-table td {
  color: var(--wesm-charcoal);
  font-size: 1rem;
  line-height: 1.35;
}

.wesm-entry-hero .wesm-entry-instruction {
  margin: 0;
  color: var(--wesm-charcoal);
  font-size: clamp(1.24rem, 1.52vw, 1.44rem);
  line-height: 1.48;
}

.wesm-about-shell {
  width: min(900px, calc(100vw - 48px));
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  align-content: center;
  gap: clamp(22px, 3.2vh, 34px);
  padding: clamp(28px, 4vh, 54px) 0;
}

.wesm-about-brand {
  display: grid;
  justify-items: start;
  gap: clamp(10px, 1.5vh, 16px);
}

.wesm-about-logo {
  width: clamp(210px, 25vw, 320px);
  height: auto;
  display: block;
}

.wesm-about-strapline {
  margin: 0;
  color: var(--wesm-charcoal);
  font-size: clamp(1.18rem, 1.65vw, 1.42rem);
  font-weight: 720;
  line-height: 1.25;
}

.wesm-about-copy {
  display: grid;
  gap: clamp(12px, 1.75vh, 18px);
  max-width: 820px;
}

.wesm-about-copy h1 {
  margin: 0;
  color: var(--wesm-charcoal);
  font-size: clamp(3.1rem, 5.9vw, 5rem);
  line-height: 0.96;
  letter-spacing: 0;
}

.wesm-about-copy p {
  margin: 0;
  color: var(--wesm-charcoal);
  font-size: clamp(1.18rem, 1.42vw, 1.34rem);
  line-height: 1.52;
}

.wesm-user-status {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 16px;
  color: var(--wesm-muted);
  font-size: 0.96rem;
}

.wesm-user-status a {
  color: var(--wesm-charcoal);
  font-weight: 700;
  text-decoration-color: var(--wesm-yellow);
  text-decoration-thickness: 3px;
  text-underline-offset: 4px;
}

.wesm-login-shell {
  max-width: 780px;
}

.wesm-login-form {
  display: grid;
  gap: 16px;
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--wesm-line);
  background: var(--wesm-surface);
}

.wesm-login-form label {
  display: grid;
  gap: 7px;
  color: var(--wesm-charcoal);
  font-size: 1rem;
  font-weight: 700;
}

.wesm-login-form input {
  width: 100%;
  min-height: 48px;
  padding: 9px 12px;
  border: 2px solid var(--wesm-charcoal);
  border-radius: 8px;
  background: #fff;
  color: var(--wesm-charcoal);
}

.wesm-login-form button {
  min-height: 52px;
  border: 2px solid var(--wesm-charcoal);
  border-radius: 8px;
  background: var(--wesm-yellow);
  color: var(--wesm-charcoal);
  cursor: pointer;
  font-weight: 780;
}

.wesm-login-error {
  margin: 0;
  color: var(--wesm-response-red);
  font-weight: 700;
}

.wesm-session-shell {
  align-content: center;
}

.wesm-session-options {
  max-width: 1160px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 22px);
}

.wesm-session-option {
  min-height: clamp(210px, 24vh, 260px);
  display: grid;
  grid-template-rows: auto 1fr auto;
  align-items: center;
  gap: clamp(14px, 1.8vh, 20px);
  padding: clamp(22px, 3vw, 34px);
  border: 2px solid var(--wesm-charcoal);
  border-radius: 8px;
  background: var(--wesm-surface);
  color: var(--wesm-charcoal);
  box-shadow: 0 16px 44px rgba(51, 51, 52, 0.12);
  text-decoration: none;
}

.wesm-session-option:hover {
  background: color-mix(in srgb, var(--wesm-yellow) 12%, var(--wesm-surface));
}

.wesm-session-option:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--wesm-yellow) 70%, white);
  outline-offset: 4px;
}

.wesm-session-level {
  width: fit-content;
  min-width: 74px;
  display: inline-grid;
  place-items: center;
  padding: 6px 16px 8px;
  border-radius: 8px;
  background: var(--wesm-yellow);
  color: var(--wesm-charcoal);
  font-size: clamp(1.45rem, 2.15vw, 1.95rem);
  font-weight: 800;
}

.wesm-session-option strong {
  font-size: clamp(1.42rem, 2vw, 1.88rem);
  line-height: 1.18;
}

.wesm-session-option span:last-child {
  font-size: clamp(1.12rem, 1.45vw, 1.32rem);
  font-weight: 750;
  text-decoration: underline;
  text-decoration-color: var(--wesm-yellow);
  text-decoration-thickness: 3px;
  text-underline-offset: 5px;
}

.wesm-start-button {
  width: fit-content;
  min-width: clamp(280px, 24vw, 340px);
  min-height: clamp(68px, 8vh, 82px);
  display: inline-grid;
  place-items: center;
  padding: 0 clamp(36px, 4vw, 54px);
  border: 2px solid var(--wesm-charcoal);
  border-radius: 8px;
  background: var(--wesm-yellow);
  color: var(--wesm-charcoal);
  box-shadow: 0 16px 44px rgba(51, 51, 52, 0.16);
  font-size: clamp(1.3rem, 1.65vw, 1.55rem);
  font-weight: 780;
  text-decoration: none;
}

.wesm-start-button:hover {
  filter: saturate(1.05) brightness(1.01);
}

.wesm-instruction-list {
  display: grid;
  gap: clamp(22px, 3vh, 34px);
}

.wesm-instruction-list article {
  display: grid;
  gap: clamp(12px, 1.65vh, 20px);
  padding: clamp(24px, 3.2vh, 36px) clamp(28px, 3.6vw, 44px);
  border: 1px solid var(--wesm-line);
  background: rgba(255, 253, 247, 0.72);
}

.wesm-instruction-list h2 {
  margin: 0;
  color: var(--wesm-charcoal);
  font-size: clamp(1.55rem, 2.05vw, 2rem);
  line-height: 1.2;
}

.wesm-instruction-list ol {
  margin: 0;
  padding-left: 1.55rem;
}

.wesm-instruction-list pre {
  margin: 0;
  padding: clamp(16px, 2vh, 22px) clamp(18px, 2.4vw, 28px);
  overflow-x: auto;
  border: 1px solid var(--wesm-line);
  background: var(--wesm-charcoal);
  color: #fffdf7;
  font-size: clamp(1.08rem, 1.4vw, 1.3rem);
  line-height: 1.5;
}

.wesm-return-link {
  margin: 0;
}

@media (max-height: 820px) and (min-width: 960px) {
  .wesm-entry-shell {
    gap: 14px;
    padding: 18px 0;
  }

  .wesm-entry-logo {
    width: clamp(156px, 13vw, 196px);
  }

  .wesm-entry-hero h1 {
    font-size: clamp(3.55rem, 6vw, 5.25rem);
  }

  .wesm-entry-lede {
    font-size: clamp(1.3rem, 1.8vw, 1.62rem);
  }

  .wesm-entry-notice {
    gap: 8px;
    padding: 16px 22px;
  }

  .wesm-entry-notice h2 {
    font-size: clamp(1.3rem, 1.85vw, 1.55rem);
  }

  .wesm-entry-notice p,
  .wesm-entry-instruction,
  .wesm-entry-copy p {
    font-size: clamp(1.12rem, 1.35vw, 1.25rem);
    line-height: 1.42;
  }

  .wesm-entry-hero .wesm-entry-instruction {
    font-size: clamp(1.12rem, 1.35vw, 1.25rem);
    line-height: 1.42;
  }

  .wesm-start-button {
    min-height: 64px;
  }

  .wesm-session-option {
    min-height: 178px;
    padding: 20px 24px;
  }
}

@media (max-width: 720px) {
  .wesm-entry-shell,
  .wesm-instructions-shell,
  .wesm-result-shell {
    width: min(100vw - 28px, 1240px);
    gap: 18px;
    padding: 24px 0 38px;
    align-content: start;
  }

  .wesm-entry-logo {
    width: clamp(152px, 42vw, 206px);
  }

  .wesm-about-shell {
    width: min(100vw - 28px, 900px);
    align-content: start;
    padding: 24px 0 38px;
  }

  .wesm-about-logo {
    width: clamp(178px, 56vw, 260px);
  }

  .wesm-about-copy h1 {
    font-size: clamp(2.7rem, 11vw, 4.2rem);
  }

  .wesm-entry-hero h1 {
    font-size: clamp(3rem, 11vw, 4.8rem);
  }

  .wesm-start-button {
    width: 100%;
  }

  .wesm-session-options {
    grid-template-columns: 1fr;
  }

  .wesm-session-option {
    min-height: 0;
  }

  .wesm-result-summary dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .wesm-instruction-list article {
    padding: 22px 20px;
  }
}

.tts-audition-shell {
  width: min(1280px, calc(100vw - 32px));
  margin: 24px auto 48px;
  display: grid;
  gap: 16px;
}

.tts-audition-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--wesm-line);
}

.tts-audition-header h1,
.tts-panel h2 {
  margin: 0;
  letter-spacing: 0;
}

.tts-audition-header h1 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
}

.tts-audition-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.tts-audition-links a,
.tts-copy-button {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 12px;
  border: 1px solid var(--wesm-charcoal);
  border-radius: 6px;
  background: #fff;
  color: var(--wesm-charcoal);
  text-decoration: none;
}

.tts-copy-button {
  cursor: pointer;
}

.tts-panel {
  padding: 16px;
  border: 1px solid var(--wesm-line);
  border-radius: 8px;
  background: var(--wesm-surface);
}

.tts-panel p {
  margin: 8px 0 0;
  color: var(--wesm-muted);
}

.tts-voice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.tts-voice-grid ul {
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
  list-style: none;
}

.tts-voice-grid li {
  display: grid;
  gap: 3px;
}

.tts-voice-grid span,
.tts-muted {
  color: var(--wesm-muted);
  font-size: 0.9rem;
}

.tts-audition-table-wrap {
  margin-top: 12px;
  overflow-x: auto;
}

.tts-audition-table {
  width: 100%;
  border-collapse: collapse;
}

.tts-audition-table th,
.tts-audition-table td {
  padding: 10px;
  border-top: 1px solid var(--wesm-line);
  text-align: left;
  vertical-align: middle;
}

.tts-audition-table th {
  color: var(--wesm-muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.tts-audition-table audio {
  width: 190px;
  max-width: 100%;
}

.tts-audition-table input {
  width: 100%;
  min-width: 68px;
  min-height: 36px;
  padding: 7px 9px;
  border: 1px solid var(--wesm-line);
  border-radius: 6px;
}

.tts-audition-table input[type="text"] {
  min-width: 220px;
}

.tts-chinese {
  font-size: 1.7rem;
  font-weight: 700;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

.meta-scaffold-hint {
  width: min(760px, 100%);
  margin: 0 auto;
  padding: 10px 12px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  border: 1px solid color-mix(in srgb, var(--wesm-yellow) 72%, var(--wesm-line));
  border-radius: 8px;
  background: #fff9dc;
  color: var(--wesm-charcoal);
  opacity: 1;
  transition: opacity 180ms ease;
}

.meta-scaffold-hint[hidden] {
  display: none;
}

.meta-scaffold-hint.is-fading {
  opacity: 0;
}

.meta-scaffold-copy {
  display: grid;
  gap: 3px;
}

.meta-scaffold-copy strong {
  font-size: 0.9rem;
}

.meta-scaffold-copy p {
  margin: 0;
  color: var(--wesm-muted);
  font-size: 0.92rem;
  line-height: 1.35;
}

.meta-scaffold-dismiss {
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid var(--wesm-charcoal);
  border-radius: 6px;
  background: #fff;
  color: var(--wesm-charcoal);
  cursor: pointer;
}

.hint-preview-shell {
  width: min(1120px, calc(100vw - 32px));
  margin: 24px auto 48px;
  display: grid;
  gap: 18px;
}

.hint-preview-header {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--wesm-line);
}

.hint-preview-header h1 {
  margin: 0;
  font-size: 2.1rem;
  letter-spacing: 0;
}

.hint-preview-header p {
  margin: 8px 0 0;
  color: var(--wesm-muted);
}

.hint-preview-panel,
.hint-table-wrap {
  padding: 16px;
  border: 1px solid var(--wesm-line);
  border-radius: 8px;
  background: var(--wesm-surface);
}

.hint-table-wrap {
  overflow-x: auto;
}

.hint-table {
  width: 100%;
  border-collapse: collapse;
}

.hint-table th,
.hint-table td {
  padding: 10px;
  border-top: 1px solid var(--wesm-line);
  text-align: left;
  vertical-align: top;
}

.hint-table th {
  color: var(--wesm-muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

@media (max-width: 820px) {
  .tts-audition-header,
  .tts-voice-grid {
    display: grid;
    grid-template-columns: 1fr;
  }

  .tts-audition-links {
    justify-content: flex-start;
  }

  .meta-scaffold-hint {
    grid-template-columns: 1fr;
  }
}