[hidden] { display: none !important; }

/* ============================================================
 * 角度の答え — style.css
 * ============================================================ */

:root {
  /* === 鋼の色調 === */
  --c-bg-deep:       #0f1011;
  --c-steel-mid:     #1c1f21;
  --c-steel-surface: #262b2e;
  --c-steel-muted:   #3d4448;
  --c-silver-light:  #c8cdd0;
  --c-silver-bright: #e8ecef;
  --c-blade:         #f4f7fa;

  /* === 炎・火花 === */
  --c-fire:        #c85a00;
  --c-fire-bright: #e8720a;
  --c-spark:       #f0c060;

  /* === 刃文・断面図 === */
  --c-accent-silver: #9ab0c0;
  --c-blade-correct: #e8f0f8;

  /* === フィードバック5段階 === */
  --fb-correct:  #e8f0f8;
  --fb-near:     #b8d4e8;
  --fb-close:    #f0c060;
  --fb-far:      #c87020;
  --fb-miss:     #e04040;

  /* === 余白 === */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  12px;
  --space-lg:  20px;
  --space-xl:  28px;
  --space-2xl: 48px;

  /* === 角丸 === */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  /* === Easing === */
  --ease-smooth: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-spring: cubic-bezier(0.5, 1.5, 0.6, 1);
}

/* === Reset === */
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  width: 100%;
  min-height: 100vh;
  background: var(--c-bg-deep);
  color: var(--c-silver-bright);
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', system-ui, sans-serif;
  font-weight: 400;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

button { font-family: inherit; cursor: pointer; }
img { max-width: 100%; display: block; }

/* === 共通レイアウト === */
.screen {
  position: relative;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg) var(--space-md);
  overflow: hidden;
}

.content-wrap {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

/* === 背景レイヤー === */
.bg-layer {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.bg-overlay {
  position: absolute;
  inset: 0;
  background: var(--c-bg-deep);
}

/* === HERO === */
.screen-hero { padding-block: var(--space-2xl); }

.hero-bg .bg-img { filter: brightness(0.55) contrast(1.1) saturate(0.85); }
.hero-bg-overlay {
  background: linear-gradient(
    180deg,
    rgba(15, 16, 17, 0.55) 0%,
    rgba(15, 16, 17, 0.65) 50%,
    rgba(15, 16, 17, 0.92) 100%
  );
}

.hero-content { gap: var(--space-md); }

.hero-sub-jp {
  font-family: 'Noto Serif JP', serif;
  font-weight: 400;
  font-size: clamp(13px, 3vw, 16px);
  color: var(--c-silver-light);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.hero-title {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: clamp(48px, 11vw, 88px);
  line-height: 1.1;
  letter-spacing: 0.08em;
  color: var(--c-blade);
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.75);
}

.hero-sub-en {
  font-family: 'Noto Sans Mono', monospace;
  font-weight: 400;
  font-size: clamp(11px, 2.4vw, 13px);
  color: var(--c-accent-silver);
  letter-spacing: 0.12em;
  margin-top: var(--space-xs);
}

.hero-catch {
  font-family: 'Noto Serif JP', serif;
  font-weight: 400;
  font-size: clamp(15px, 3.8vw, 18px);
  line-height: 1.85;
  color: var(--c-silver-bright);
  margin-block: var(--space-lg) var(--space-md);
}

.hero-tagline {
  font-family: 'Noto Sans Mono', monospace;
  font-size: 12px;
  color: var(--c-silver-light);
  letter-spacing: 0.1em;
  margin-top: var(--space-md);
}

.hero-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
  padding: var(--space-md);
  font-size: 11px;
  line-height: 1.7;
  color: var(--c-silver-light);
  text-align: center;
  background: linear-gradient(180deg, transparent 0%, rgba(15, 16, 17, 0.85) 80%);
}

/* === ボタン === */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 220px;
  min-height: 52px;
  padding: 0 var(--space-xl);
  background: var(--c-fire);
  color: var(--c-blade);
  border: none;
  border-radius: var(--radius-md);
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background 0.2s var(--ease-smooth),
              box-shadow 0.2s var(--ease-smooth),
              transform 0.15s var(--ease-smooth);
  margin-top: var(--space-md);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--c-fire-bright);
  box-shadow: 0 0 24px rgba(200, 90, 0, 0.5);
  outline: none;
}

.btn-primary:focus-visible {
  outline: 2px solid var(--c-spark);
  outline-offset: 3px;
}

.btn-primary:active { transform: translateY(1px); }

.btn-primary:disabled,
.btn-primary[aria-disabled='true'] {
  background: var(--c-steel-muted);
  pointer-events: none;
  opacity: 0.6;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 200px;
  min-height: 44px;
  padding: 0 var(--space-lg);
  background: transparent;
  color: var(--c-silver-bright);
  border: 1px solid var(--c-steel-muted);
  border-radius: var(--radius-md);
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 500;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s var(--ease-smooth),
              border-color 0.15s var(--ease-smooth);
  margin-top: var(--space-sm);
}

.btn-secondary:hover {
  background: var(--c-steel-surface);
  border-color: var(--c-accent-silver);
}

.btn-secondary:focus-visible { outline: 2px solid var(--c-spark); outline-offset: 3px; }
.step-btn:focus-visible { outline: 2px solid var(--c-spark); outline-offset: 3px; }
.about-link:focus-visible { outline: 2px solid var(--c-spark); outline-offset: 3px; }

/* === GAME === */
.screen-game {
  justify-content: flex-start;
  padding-block: var(--space-lg);
  min-height: 100dvh;
}

.game-bg .bg-img {
  opacity: 0.33;
  filter: brightness(0.7) contrast(1.05) saturate(0.85);
  transition: opacity 800ms var(--ease-smooth), transform 2s var(--ease-smooth);
}

.game-bg-img { transform: scale(1.05); }
.game-bg-img-full { opacity: 0; }

/* data-stage 切替（setTimeout 非使用・親 #game の属性で切替） */
#game[data-stage="2"] .game-bg-img { opacity: 0.18; }
#game[data-stage="2"] .game-bg-img-full { opacity: 0.33; }

.game-bg-overlay {
  background: linear-gradient(
    180deg,
    rgba(15, 16, 17, 0.92) 0%,
    rgba(15, 16, 17, 0.86) 50%,
    rgba(15, 16, 17, 0.95) 100%
  );
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.game-content { gap: var(--space-md); }

.game-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background: rgba(38, 43, 46, 0.6);
  border-radius: var(--radius-md);
  border: 1px solid var(--c-steel-muted);
  margin-bottom: var(--space-sm);
}

.game-q-label {
  font-family: 'Noto Sans Mono', monospace;
  font-weight: 700;
  font-size: 14px;
  color: var(--c-spark);
  letter-spacing: 0.08em;
}

.game-attempts {
  display: inline-flex;
  gap: 6px;
}

.attempt-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-steel-muted);
  border: 1px solid var(--c-silver-light);
  transition: background 0.2s var(--ease-smooth);
}

.attempt-dot.used { background: var(--c-fire); border-color: var(--c-fire); }
.attempt-dot.correct { background: var(--c-blade-correct); border-color: var(--c-blade-correct); }

.knife-photo-frame {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--c-steel-mid);
  border: 1px solid var(--c-steel-muted);
  position: relative;
  margin-bottom: var(--space-sm);
}

.knife-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 2s var(--ease-smooth);
}

.knife-photo-frame[data-stage="1"] .knife-photo-macro { transform: scale(1.6); }
.knife-photo-frame[data-stage="2"] .knife-photo-macro { transform: scale(1); }

.game-question-name {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: clamp(20px, 5vw, 26px);
  color: var(--c-blade);
  letter-spacing: 0.05em;
}

.game-question-meta {
  font-size: 13px;
  color: var(--c-silver-light);
  margin-top: var(--space-xs);
}

.game-question-blade {
  display: inline-block;
  font-family: 'Noto Sans Mono', monospace;
  font-size: 11px;
  color: var(--c-spark);
  letter-spacing: 0.12em;
  margin-top: var(--space-xs);
  padding: 2px 10px;
  border: 1px solid var(--c-steel-muted);
  border-radius: var(--radius-pill);
  background: rgba(38, 43, 46, 0.55);
}

.game-question-prompt {
  font-family: 'Noto Serif JP', serif;
  font-size: 15px;
  color: var(--c-silver-bright);
  margin-top: var(--space-md);
  letter-spacing: 0.05em;
}

.cross-section-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  margin-block: var(--space-md);
}

.cross-section-canvas {
  width: 120px;
  height: 120px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--c-steel-surface);
  border: 1px solid var(--c-steel-muted);
}

.angle-display-wrap {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  color: var(--c-blade);
}

.angle-display {
  font-family: 'Noto Sans Mono', monospace;
  font-weight: 700;
  font-size: clamp(64px, 14vw, 88px);
  line-height: 1;
  letter-spacing: -0.02em;
  text-shadow: 0 0 24px rgba(154, 176, 192, 0.3);
}

.angle-unit {
  font-family: 'Noto Sans Mono', monospace;
  font-weight: 400;
  font-size: clamp(28px, 6vw, 36px);
  color: var(--c-accent-silver);
}

.slider-row {
  width: 100%;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-sm);
  background: rgba(38, 43, 46, 0.7);
  border-radius: var(--radius-md);
  border: 1px solid var(--c-steel-muted);
}

.step-btn {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: var(--c-steel-surface);
  color: var(--c-silver-bright);
  border: 1px solid var(--c-steel-muted);
  border-radius: var(--radius-sm);
  font-family: 'Noto Sans Mono', monospace;
  font-size: 22px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s var(--ease-smooth),
              border-color 0.15s var(--ease-smooth),
              transform 0.1s var(--ease-smooth);
}

.step-btn:hover {
  background: var(--c-steel-muted);
  border-color: var(--c-accent-silver);
}

.step-btn:active { transform: scale(0.95); }

input[type='range'] {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  height: 6px;
  background: linear-gradient(
    to right,
    var(--c-accent-silver) 0%,
    var(--c-accent-silver) var(--slider-pct, 50%),
    var(--c-steel-muted) var(--slider-pct, 50%),
    var(--c-steel-muted) 100%
  );
  border-radius: var(--radius-pill);
  outline: none;
}

input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--c-blade);
  box-shadow: 0 0 10px rgba(154, 176, 192, 0.6);
  cursor: grab;
  transition: transform 0.1s var(--ease-smooth),
              box-shadow 0.1s var(--ease-smooth);
}

input[type='range']::-moz-range-thumb {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--c-blade);
  box-shadow: 0 0 10px rgba(154, 176, 192, 0.6);
  cursor: grab;
  border: none;
}

input[type='range']::-webkit-slider-thumb:active {
  cursor: grabbing;
  transform: scale(1.15);
  box-shadow: 0 0 18px rgba(154, 176, 192, 0.9);
}

input[type='range']:focus-visible {
  outline: 2px solid var(--c-spark);
  outline-offset: 6px;
  border-radius: var(--radius-pill);
}

.slider-scale {
  width: 100%;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  justify-content: space-between;
  padding: 0 60px;
  font-family: 'Noto Sans Mono', monospace;
  font-size: 10px;
  color: var(--c-silver-light);
  letter-spacing: 0.1em;
  margin-top: var(--space-xs);
}

.legal-note {
  font-size: 11px;
  color: var(--c-silver-light);
  opacity: 0.75;
  margin-top: var(--space-sm);
  line-height: 1.6;
  text-align: center;
}

.feedback-box {
  width: 100%;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  background: rgba(38, 43, 46, 0.5);
  border: 1px solid var(--c-steel-muted);
  margin-top: var(--space-md);
  transition: background 0.3s var(--ease-smooth),
              border-color 0.3s var(--ease-smooth);
}

.feedback-text {
  font-family: 'Noto Serif JP', serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.55;
  color: var(--c-silver-bright);
  text-align: center;
  letter-spacing: 0.05em;
  transition: color 0.3s var(--ease-smooth);
}

.feedback-box.fb-correct { background: rgba(232, 240, 248, 0.12); border-color: var(--fb-correct); }
.feedback-box.fb-correct .feedback-text { color: var(--fb-correct); font-weight: 700; }
.feedback-box.fb-near    { background: rgba(184, 212, 232, 0.10); border-color: var(--fb-near); }
.feedback-box.fb-near    .feedback-text { color: var(--fb-near); }
.feedback-box.fb-close   { background: rgba(240, 192,  96, 0.10); border-color: var(--fb-close); }
.feedback-box.fb-close   .feedback-text { color: var(--fb-close); }
.feedback-box.fb-far     { background: rgba(200, 112,  32, 0.08); border-color: var(--fb-far); }
.feedback-box.fb-far     .feedback-text { color: var(--fb-far); }
.feedback-box.fb-miss    { background: rgba(200,  64,  48, 0.10); border-color: var(--fb-miss); }
.feedback-box.fb-miss    .feedback-text { color: var(--fb-miss); animation: shake 0.4s var(--ease-smooth); }

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* === MODAL === */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  overflow-y: auto;
}

.modal-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.modal-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.5) contrast(1.05) saturate(0.8);
}

.modal-bg-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 16, 17, 0.88);
}

.modal-card {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--space-xl) var(--space-lg);
  background: rgba(28, 31, 33, 0.95);
  border: 1px solid var(--c-steel-muted);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-sm);
}

.explain-pre {
  font-family: 'Noto Serif JP', serif;
  font-size: 14px;
  color: var(--c-silver-light);
  letter-spacing: 0.08em;
}

.explain-angle {
  font-family: 'Noto Sans Mono', monospace;
  font-weight: 700;
  color: var(--c-fire-bright);
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  text-shadow: 0 0 24px rgba(200, 90, 0, 0.4);
}

.explain-angle #explain-angle-num {
  font-size: clamp(56px, 14vw, 80px);
  line-height: 1;
}

.angle-unit-md {
  font-size: clamp(20px, 5vw, 28px);
  color: var(--c-spark);
}

.explain-angle-side {
  font-family: 'Noto Serif JP', serif;
  font-weight: 400;
  font-size: 14px;
  color: var(--c-silver-light);
  margin-left: 8px;
  letter-spacing: 0.05em;
}

.explain-knife-name {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 20px;
  color: var(--c-blade);
  margin-top: var(--space-sm);
}

.explain-knife-type {
  font-family: 'Noto Sans Mono', monospace;
  font-size: 12px;
  color: var(--c-accent-silver);
  letter-spacing: 0.1em;
}

.explain-section {
  width: 100%;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--c-steel-muted);
  text-align: left;
  margin-top: var(--space-sm);
}

.explain-h3 {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 15px;
  color: var(--c-spark);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.explain-body {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-silver-bright);
}

.explain-note {
  font-size: 10px;
  color: var(--c-silver-light);
  opacity: 0.65;
  margin-top: var(--space-xs);
  line-height: 1.55;
}

.explain-cta-text {
  width: 100%;
  margin-top: var(--space-md);
  padding: var(--space-md) 0;
  border-top: 1px dashed var(--c-steel-muted);
  font-family: 'Noto Serif JP', serif;
  font-size: 13px;
  color: var(--c-silver-light);
  letter-spacing: 0.05em;
  line-height: 1.8;
}

.explain-cta-keyword {
  display: inline-block;
  margin-top: var(--space-xs);
  font-family: 'Noto Sans Mono', monospace;
  font-size: 11px;
  color: var(--c-spark);
  letter-spacing: 0.08em;
}

/* === RESULT === */
.result-bg .bg-img { filter: brightness(0.45) contrast(1.1) saturate(0.85); }

.result-bg-overlay {
  background: linear-gradient(
    180deg,
    rgba(15, 16, 17, 0.65) 0%,
    rgba(15, 16, 17, 0.85) 60%,
    rgba(15, 16, 17, 0.95) 100%
  );
}

.result-content { gap: var(--space-md); padding-block: var(--space-2xl); }

.result-pre {
  font-family: 'Noto Serif JP', serif;
  font-size: 13px;
  color: var(--c-silver-light);
  letter-spacing: 0.15em;
}

.result-rank-name {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: clamp(40px, 10vw, 60px);
  line-height: 1.1;
  letter-spacing: 0.1em;
  color: var(--c-spark);
  text-shadow: 0 2px 24px rgba(240, 192, 96, 0.3);
}

.result-rank-copy {
  font-family: 'Noto Serif JP', serif;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-silver-bright);
  margin-top: var(--space-xs);
  letter-spacing: 0.05em;
}

.result-stats {
  display: flex;
  gap: var(--space-lg);
  width: 100%;
  justify-content: center;
  margin-block: var(--space-md);
}

.result-stat {
  flex: 1;
  padding: var(--space-md);
  background: rgba(38, 43, 46, 0.7);
  border: 1px solid var(--c-steel-muted);
  border-radius: var(--radius-md);
}

.stat-label {
  font-size: 11px;
  color: var(--c-silver-light);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
}

.stat-value {
  font-family: 'Noto Sans Mono', monospace;
  font-weight: 700;
  font-size: clamp(24px, 6vw, 32px);
  color: var(--c-blade);
  line-height: 1.1;
}

.stat-unit {
  font-size: 14px;
  color: var(--c-accent-silver);
  margin-left: 2px;
}

.result-grid {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: rgba(28, 31, 33, 0.7);
  border-radius: var(--radius-md);
  border: 1px solid var(--c-steel-muted);
}

.result-row {
  display: grid;
  grid-template-columns: 100px 1fr 60px;
  align-items: center;
  gap: var(--space-sm);
  text-align: left;
}

.result-row-label {
  font-family: 'Noto Serif JP', serif;
  font-size: 13px;
  color: var(--c-silver-bright);
}

.result-row-bar-wrap {
  position: relative;
  height: 16px;
  background: var(--c-steel-surface);
  border-radius: 2px;
  overflow: hidden;
}

.result-row-bar {
  height: 100%;
  background: linear-gradient(to right, var(--c-spark), var(--c-fire-bright));
  transition: width 0.6s var(--ease-smooth);
}

.result-row-bar.correct {
  background: linear-gradient(to right, var(--c-blade-correct), var(--c-accent-silver));
}

.result-row-bar.miss {
  background: linear-gradient(to right, var(--fb-miss), var(--fb-far));
}

.result-row-diff {
  font-family: 'Noto Sans Mono', monospace;
  font-size: 12px;
  color: var(--c-silver-light);
  text-align: right;
}

.result-scarcity {
  font-family: 'Noto Serif JP', serif;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-silver-bright);
  margin-block: var(--space-md);
}

.result-scarcity strong {
  font-family: 'Noto Sans Mono', monospace;
  color: var(--c-spark);
  font-size: 18px;
  font-weight: 700;
}

.hidden-rank-section {
  width: 100%;
  padding: var(--space-md);
  background: linear-gradient(135deg, rgba(240, 192, 96, 0.15), rgba(200, 90, 0, 0.15));
  border: 2px solid var(--c-spark);
  border-radius: var(--radius-md);
  box-shadow: 0 0 24px rgba(240, 192, 96, 0.25);
}

.hidden-rank-label {
  font-family: 'Noto Sans Mono', monospace;
  font-size: 11px;
  color: var(--c-spark);
  letter-spacing: 0.2em;
  margin-bottom: var(--space-xs);
}

.hidden-rank-name {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 24px;
  color: var(--c-blade);
  letter-spacing: 0.1em;
}

.hidden-rank-copy {
  font-family: 'Noto Serif JP', serif;
  font-size: 13px;
  color: var(--c-silver-bright);
  margin-top: var(--space-xs);
}

.comedy-badge {
  width: 100%;
  padding: var(--space-md);
  background: rgba(200, 64, 48, 0.12);
  border: 1px solid var(--fb-miss);
  border-radius: var(--radius-md);
}

.comedy-badge-title {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 16px;
  color: var(--fb-miss);
}

.comedy-badge-copy {
  font-size: 13px;
  color: var(--c-silver-bright);
  margin-top: var(--space-xs);
}

.result-cta-guide {
  width: 100%;
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: rgba(38, 43, 46, 0.55);
  border: 1px dashed var(--c-steel-muted);
  border-radius: var(--radius-md);
  font-family: 'Noto Serif JP', serif;
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-silver-light);
  text-align: center;
  letter-spacing: 0.05em;
}

.result-cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  width: 100%;
  align-items: center;
  margin-top: var(--space-md);
}

.share-status {
  font-size: 13px;
  color: var(--c-spark);
  margin-top: var(--space-sm);
}

.result-disclaimer {
  font-size: 11px;
  line-height: 1.7;
  color: var(--c-silver-light);
  margin-top: var(--space-lg);
  opacity: 0.8;
}

/* === About Link === */
.about-link {
  position: fixed;
  bottom: 8px;
  right: 8px;
  z-index: 50;
  padding: 4px 10px;
  background: rgba(38, 43, 46, 0.75);
  color: var(--c-silver-light);
  border: 1px solid var(--c-steel-muted);
  border-radius: var(--radius-pill);
  font-family: 'Noto Sans Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: background 0.15s var(--ease-smooth);
}

.about-link:hover { background: var(--c-steel-surface); }

.modal-card-about { max-width: 460px; }

/* === SHARE CARD (隠しDOM 9:16) === */
#share-card {
  position: fixed;
  left: -9999px;
  top: 0;
  width: 1080px;
  height: 1920px;
  background: var(--c-bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Noto Serif JP', serif;
  color: var(--c-blade);
  overflow: hidden;
}

#share-card[hidden] { display: none !important; }

.share-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.share-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4) contrast(1.1) saturate(0.85);
}

.share-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(15, 16, 17, 0.72) 0%,
    rgba(15, 16, 17, 0.85) 50%,
    rgba(15, 16, 17, 0.92) 100%
  );
}

.share-content {
  position: relative;
  z-index: 2;
  width: 80%;
  max-width: 880px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.share-title {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 130px;
  letter-spacing: 0.12em;
  line-height: 1;
  text-shadow: 0 4px 32px rgba(0, 0, 0, 0.75);
}

.share-subtitle {
  font-family: 'Noto Sans Mono', monospace;
  font-size: 26px;
  color: var(--c-accent-silver);
  letter-spacing: 0.1em;
}

.share-divider {
  width: 240px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--c-spark), transparent);
  margin-block: 14px;
}

.share-rank-pre {
  font-size: 28px;
  color: var(--c-silver-light);
  letter-spacing: 0.2em;
}

.share-rank-name {
  font-family: 'Noto Serif JP', serif;
  font-weight: 700;
  font-size: 120px;
  color: var(--c-spark);
  letter-spacing: 0.15em;
  line-height: 1.1;
  text-shadow: 0 0 32px rgba(240, 192, 96, 0.5);
}

.share-rank-copy {
  font-size: 32px;
  color: var(--c-silver-bright);
  letter-spacing: 0.05em;
  line-height: 1.5;
}

.share-stats-row {
  display: flex;
  gap: 64px;
  margin-block: 32px;
}

.share-stat-label {
  font-size: 24px;
  color: var(--c-silver-light);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}

.share-stat-value {
  font-family: 'Noto Sans Mono', monospace;
  font-weight: 700;
  font-size: 64px;
  color: var(--c-blade);
  line-height: 1;
}

.share-grid {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 32px;
  background: rgba(28, 31, 33, 0.6);
  border-radius: 24px;
  border: 1px solid var(--c-steel-muted);
}

.share-row {
  display: grid;
  grid-template-columns: 220px 1fr 100px;
  gap: 24px;
  align-items: center;
  font-size: 28px;
  text-align: left;
  color: var(--c-silver-bright);
}

.share-row-bar-wrap {
  position: relative;
  height: 24px;
  background: var(--c-steel-surface);
  border-radius: 4px;
  overflow: hidden;
}

.share-row-bar {
  height: 100%;
  background: linear-gradient(to right, var(--c-spark), var(--c-fire-bright));
}

.share-row-bar.correct {
  background: linear-gradient(to right, var(--c-blade-correct), var(--c-accent-silver));
}

.share-row-bar.miss {
  background: linear-gradient(to right, var(--fb-miss), var(--fb-far));
}

.share-row-diff {
  font-family: 'Noto Sans Mono', monospace;
  font-size: 22px;
  color: var(--c-silver-light);
  text-align: right;
}

.share-scarcity {
  font-size: 26px;
  color: var(--c-silver-bright);
  line-height: 1.7;
  letter-spacing: 0.05em;
}

.share-scarcity span {
  font-family: 'Noto Sans Mono', monospace;
  color: var(--c-spark);
  font-weight: 700;
}

.share-footer-tag {
  font-family: 'Noto Sans Mono', monospace;
  font-size: 24px;
  color: var(--c-accent-silver);
  letter-spacing: 0.1em;
}

.share-footer-region {
  font-size: 22px;
  color: var(--c-silver-light);
  margin-top: 8px;
}

.share-footer-disclaimer {
  font-size: 18px;
  color: var(--c-silver-light);
  opacity: 0.6;
  margin-top: 4px;
}

/* === Responsive === */
@media (max-width: 380px) {
  .step-btn { width: 44px; height: 44px; font-size: 20px; }
  .cross-section-canvas { width: 96px; height: 96px; }
  .angle-display { font-size: 56px; }
  .btn-primary { min-width: 180px; font-size: 15px; }
}

@media (min-width: 768px) {
  .content-wrap { max-width: 560px; }
  .modal-card { max-width: 600px; padding: var(--space-2xl) var(--space-xl); }
  .cross-section-canvas { width: 140px; height: 140px; }
}

@media (min-width: 1024px) {
  .screen { padding-block: var(--space-2xl); }
  .content-wrap { max-width: 600px; }
  .hero-title { font-size: 96px; }
  .hero-content { gap: var(--space-lg); }
  .result-content { padding-block: 80px; }
  .modal-card { max-width: 680px; }
}

/* === Reduced motion === */
@media (prefers-reduced-motion: reduce) {
  .knife-photo, .game-bg .bg-img { transition: none !important; }
  .feedback-box.fb-miss .feedback-text { animation: none !important; }
}

/* === Stage切替（写真2段開示） === */
#knife-photo-frame[data-stage="2"] .knife-photo-macro { transform: scale(1); }

/* === Slider stage feedback === */
#angle-slider[data-locked="true"] { pointer-events: none; opacity: 0.6; }