/* ============================================================
   星际跃迁 - Star Leap
   UI 设计系统 v2 — 太空霓虹 · 玻璃质感
   ============================================================ */

/* ── CSS 变量 ──────────────────────────────────────────── */
:root {
  --c-bg: #0a0c1e;
  --c-text: #ffffff;
  --c-text-dim: rgba(255,255,255,0.5);
  --c-text-faint: rgba(255,255,255,0.3);
  --c-accent: #4fc3f7;
  --c-accent-glow: rgba(79,195,247,0.6);
  --c-gold: #ffdd57;
  --c-gold-glow: rgba(255,221,87,0.7);
  --c-perfect: #ff6b9d;
  --c-good: #7bed9f;
  --c-danger: #ff4757;
  --c-glass: rgba(255,255,255,0.06);
  --c-glass-border: rgba(255,255,255,0.1);
  --c-glass-hover: rgba(255,255,255,0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-bounce: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --ease-inout: cubic-bezier(0.65, 0, 0.35, 1);
  --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
}

/* ── 全局重置 ──────────────────────────────────────────── */
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: var(--c-bg);
  touch-action: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}
canvas { display: block; position: absolute; top: 0; left: 0; }
button {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

/* ── UI 叠加层 ────────────────────────────────────────── */
#ui-layer {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 10;
}
#ui-layer > * { pointer-events: auto; }

/* ============================================================
   HUD — 顶部信息条
   ============================================================ */

/* 计分面板 */
#score-panel {
  position: absolute;
  top: max(12px, env(safe-area-inset-top, 12px));
  left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center;
  z-index: 8;
  pointer-events: none;
}

#score-display {
  font-family: var(--font);
  font-size: 44px; font-weight: 900;
  color: var(--c-text);
  letter-spacing: 3px;
  text-shadow: 0 0 30px var(--c-accent-glow), 0 0 60px rgba(100,150,255,0.4);
  transition: transform 0.15s var(--ease-out), color 0.3s ease;
  line-height: 1;
}
#score-display.combo-active {
  color: var(--c-gold);
  text-shadow: 0 0 40px var(--c-gold-glow), 0 0 80px rgba(255,150,0,0.5);
  animation: scorePulse 0.35s var(--ease-bounce);
}
@keyframes scorePulse {
  0%, 100% { transform: scale(1); }
  40% { transform: scale(1.18); }
}

#score-unit {
  font-size: 11px;
  color: var(--c-text-dim);
  letter-spacing: 4px;
  margin-top: -2px;
  text-shadow: 0 0 8px rgba(150,200,255,0.3);
}

/* 区域指示器 */
#zone-indicator {
  position: absolute;
  top: max(16px, env(safe-area-inset-top, 16px));
  left: 16px;
  padding: 5px 12px;
  font-size: 11px; font-weight: 600;
  letter-spacing: 2px;
  border-radius: var(--radius-full);
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  color: var(--c-text-dim);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 6;
  transition: all 0.6s ease;
  pointer-events: none;
}
#zone-indicator.beginner { color: #4fc3f7; border-color: rgba(79,195,247,0.3); }
#zone-indicator.advanced { color: #a29bfe; border-color: rgba(162,155,254,0.3); }
#zone-indicator.expert   { color: #fdcb6e; border-color: rgba(253,203,110,0.3); }
#zone-indicator.master   { color: #ff6b6b; border-color: rgba(255,107,107,0.3); }

/* 排行榜按钮 */
#leaderboard-btn {
  position: absolute;
  top: max(14px, env(safe-area-inset-top, 14px));
  right: 16px;
  width: 38px; height: 38px;
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  border-radius: 50%;
  color: var(--c-text);
  font-size: 17px;
  cursor: pointer; z-index: 8;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.25s ease;
}
#leaderboard-btn:hover { background: var(--c-glass-hover); }
#leaderboard-btn:active { transform: scale(0.92); background: rgba(255,255,255,0.18); }

/* ============================================================
   着陆反馈 — 连击 & 质量
   ============================================================ */

#landing-text {
  position: absolute; top: 38%; left: 50%;
  transform: translate(-50%, -50%) translateY(20px);
  font-size: 28px; font-weight: 900;
  color: var(--c-text);
  text-shadow: 0 0 24px rgba(255,255,255,0.6);
  opacity: 0;
  transition: all 0.5s var(--ease-out);
  z-index: 6;
  pointer-events: none;
}
#landing-text.show {
  opacity: 1;
  transform: translate(-50%, -50%) translateY(0);
}
#landing-text.perfect {
  color: var(--c-perfect);
  font-size: 40px;
  text-shadow: 0 0 36px rgba(255,107,157,0.7);
}
#landing-text.good {
  color: var(--c-good);
  text-shadow: 0 0 28px rgba(123,237,159,0.6);
}

#combo-indicator {
  position: absolute; top: 26%; left: 50%;
  transform: translate(-50%, -50%) scale(0.6);
  font-size: 56px; font-weight: 900;
  color: var(--c-gold);
  text-shadow: 0 0 48px var(--c-gold-glow);
  opacity: 0;
  transition: all 0.4s var(--ease-bounce);
  z-index: 7;
  pointer-events: none;
  white-space: nowrap;
}
#combo-indicator.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}
#combo-indicator.super {
  font-size: 72px;
  color: var(--c-perfect);
  text-shadow: 0 0 56px rgba(255,107,157,0.8);
}

/* ============================================================
   标题画面
   ============================================================ */

#title-screen {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  display: flex; flex-direction: column; align-items: center;
  justify-content: center;
  z-index: 15;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,0.3) 100%);
}
#title-screen.hidden { display: none; }

.title-main {
  font-family: var(--font);
  font-size: clamp(40px, 8vw, 58px); font-weight: 900;
  color: var(--c-text);
  letter-spacing: 12px;
  text-shadow:
    0 0 50px var(--c-accent-glow),
    0 0 100px rgba(100,150,255,0.4),
    0 2px 4px rgba(0,0,0,0.5);
  margin-bottom: 8px;
  animation: titleFloat 4s ease-in-out infinite;
}
@keyframes titleFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.title-sub {
  font-size: 14px;
  color: var(--c-text-dim);
  letter-spacing: 10px;
  margin-bottom: 24px;
  text-shadow: 0 0 12px rgba(150,200,255,0.3);
}

.title-start-btn {
  pointer-events: auto;
  padding: 14px 56px;
  font-family: var(--font);
  font-size: 17px; font-weight: 600;
  color: var(--c-text);
  letter-spacing: 3px;
  background: linear-gradient(135deg, rgba(79,195,247,0.3) 0%, rgba(118,75,162,0.4) 100%);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: 0 0 40px rgba(79,195,247,0.2);
  transition: all 0.3s ease;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  margin-bottom: 28px;
}
.title-start-btn:hover { box-shadow: 0 0 60px rgba(79,195,247,0.35); }
.title-start-btn:active { transform: scale(0.95); }

.title-hint {
  font-size: 15px;
  color: var(--c-text-faint);
  letter-spacing: 4px;
  animation: hintPulse 2.4s ease-in-out infinite;
}
@keyframes hintPulse {
  0%, 100% { opacity: 0.25; }
  50% { opacity: 0.75; }
}

/* ============================================================
   教程
   ============================================================ */

#tutorial {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(4,6,20,0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  z-index: 20;
  transition: opacity 0.5s ease;
}
#tutorial.hidden { display: none; }

#tutorial .hand-icon {
  width: 88px; height: 88px;
  border: 3px solid rgba(255,255,255,0.5);
  border-radius: 50%;
  position: relative;
  margin-bottom: 32px;
  animation: handDrag 1.8s ease-in-out infinite;
  box-shadow: 0 0 30px var(--c-accent-glow), inset 0 0 30px rgba(79,195,247,0.1);
}
#tutorial .hand-icon::after {
  content: '';
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 20px; height: 20px;
  background: rgba(255,255,255,0.8);
  border-radius: 50%;
  box-shadow: 0 0 15px rgba(255,255,255,0.5);
}
@keyframes handDrag {
  0%, 100% { transform: translateX(36px); opacity: 1; }
  50%      { transform: translateX(-36px); opacity: 0.4; }
}

#tutorial .tut-step {
  display: flex; align-items: center; gap: 10px;
  color: var(--c-text);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 8px;
  text-shadow: 0 0 12px rgba(255,255,255,0.3);
}
#tutorial .tut-step .step-num {
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  background: var(--c-accent-glow);
  border-radius: 50%;
  font-size: 12px; font-weight: 700;
  color: #000;
  flex-shrink: 0;
}
#tutorial .tut-sub {
  color: var(--c-text-dim);
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 28px;
  padding-left: 34px;
}
#tutorial .tut-btn {
  padding: 14px 56px;
  font-family: var(--font);
  font-size: 17px; font-weight: 600;
  color: var(--c-text);
  letter-spacing: 3px;
  background: linear-gradient(135deg, rgba(79,195,247,0.3) 0%, rgba(118,75,162,0.4) 100%);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: 0 0 40px rgba(79,195,247,0.2);
  transition: all 0.3s ease;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
#tutorial .tut-btn:hover { box-shadow: 0 0 60px rgba(79,195,247,0.35); }
#tutorial .tut-btn:active { transform: scale(0.95); }

/* ============================================================
   游戏结束
   ============================================================ */

#game-over {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(4,6,20,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  z-index: 20;
  transition: opacity 0.5s ease;
}
#game-over.hidden { display: none; }

.go-card {
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  display: flex; flex-direction: column; align-items: center;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  max-width: 340px; width: 85%;
}

.go-title {
  font-size: 18px; font-weight: 700;
  color: var(--c-text-dim);
  letter-spacing: 3px;
  margin-bottom: 4px;
}

.go-score-row {
  display: flex; align-items: baseline; gap: 6px;
  margin-bottom: 6px;
}
.go-score {
  font-size: 72px; font-weight: 900;
  color: var(--c-gold);
  text-shadow: 0 0 48px var(--c-gold-glow);
  line-height: 1;
}
.go-unit {
  font-size: 15px;
  color: var(--c-text-dim);
  letter-spacing: 3px;
}

.go-new-record {
  font-size: 12px; font-weight: 700;
  color: var(--c-gold);
  text-shadow: 0 0 16px var(--c-gold-glow);
  letter-spacing: 4px;
  margin-bottom: 20px;
  animation: recordPulse 1s ease-in-out infinite;
}
@keyframes recordPulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

.go-divider {
  width: 60px; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  margin-bottom: 18px;
}

.go-stats {
  display: flex; gap: 24px; margin-bottom: 22px;
}
.go-stat {
  display: flex; flex-direction: column; align-items: center;
  min-width: 56px;
}
.go-stat .val {
  font-size: 26px; font-weight: 700;
  color: var(--c-text);
  text-shadow: 0 0 10px rgba(255,255,255,0.3);
  line-height: 1;
}
.go-stat .lbl {
  font-size: 11px;
  color: var(--c-text-faint);
  margin-top: 6px;
  letter-spacing: 1px;
}

.go-btn {
  padding: 14px 52px;
  font-family: var(--font);
  font-size: 17px; font-weight: 600;
  color: var(--c-text);
  letter-spacing: 3px;
  background: linear-gradient(135deg, rgba(79,195,247,0.3) 0%, rgba(118,75,162,0.4) 100%);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: 0 0 40px rgba(79,195,247,0.2);
  transition: all 0.3s ease;
}
.go-btn:hover { box-shadow: 0 0 60px rgba(79,195,247,0.35); }
.go-btn:active { transform: scale(0.95); }

/* ============================================================
   排行榜
   ============================================================ */

#leaderboard {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(4,6,20,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 25;
  display: flex; flex-direction: column;
  align-items: center;
  padding: 50px 20px 40px;
  overflow-y: auto;
  transition: opacity 0.35s ease;
}
#leaderboard.hidden { display: none; }

#leaderboard h2 {
  font-family: var(--font);
  font-size: 22px; font-weight: 700;
  color: var(--c-text);
  letter-spacing: 4px;
  text-shadow: 0 0 20px rgba(150,200,255,0.4);
  margin-bottom: 6px;
}
#leaderboard .lb-subtitle {
  font-size: 12px;
  color: var(--c-text-faint);
  letter-spacing: 2px;
  margin-bottom: 18px;
}

.lb-tabs {
  display: flex; gap: 6px; margin-bottom: 22px;
  flex-wrap: wrap; justify-content: center;
  padding: 0 8px;
}
.lb-tab {
  padding: 8px 16px;
  font-family: var(--font);
  font-size: 12px; font-weight: 600;
  color: var(--c-text-dim);
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.3s ease;
  letter-spacing: 1px;
  white-space: nowrap;
}
.lb-tab:hover { color: var(--c-text); background: var(--c-glass-hover); }
.lb-tab.active {
  color: var(--c-gold);
  border-color: rgba(255,221,87,0.4);
  background: rgba(255,221,87,0.1);
  box-shadow: 0 0 16px rgba(255,221,87,0.15);
}

.lb-list {
  width: 100%; max-width: 420px;
}

.lb-empty {
  color: var(--c-text-faint);
  text-align: center;
  padding: 44px 20px;
  font-size: 14px;
  line-height: 2;
  letter-spacing: 1px;
}

.lb-item {
  display: flex; align-items: center; gap: 12px;
  padding: 13px 16px;
  margin-bottom: 6px;
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  border-radius: var(--radius-md);
  transition: background 0.2s ease;
}
.lb-item:first-child {
  background: rgba(255,221,87,0.06);
  border-color: rgba(255,221,87,0.2);
  box-shadow: 0 0 24px rgba(255,221,87,0.06);
}

.lb-rank {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
  color: var(--c-text-faint);
  flex-shrink: 0;
}
.lb-rank.gold   { color: #ffd700; font-size: 18px; text-shadow: 0 0 12px rgba(255,215,0,0.5); }
.lb-rank.silver { color: #c0c0c0; font-size: 16px; text-shadow: 0 0 10px rgba(192,192,192,0.4); }
.lb-rank.bronze { color: #cd7f32; font-size: 16px; text-shadow: 0 0 10px rgba(205,127,50,0.4); }

.lb-score {
  flex: 1; font-weight: 700;
  font-size: 17px; color: var(--c-text);
  letter-spacing: 0.5px;
}
.lb-name {
  font-weight: 400;
  font-size: 11px;
  color: var(--c-text-faint);
  letter-spacing: 1px;
  margin-left: 8px;
}
.lb-date {
  font-size: 10px; color: var(--c-text-faint);
  letter-spacing: 1px;
  flex-shrink: 0;
}

#lb-close {
  margin-top: 24px;
  padding: 10px 36px;
  font-family: var(--font);
  font-size: 14px; font-weight: 600;
  color: var(--c-text-dim);
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  letter-spacing: 2px;
  transition: all 0.25s ease;
}
#lb-close:hover { color: var(--c-text); background: var(--c-glass-hover); }
#lb-close:active { transform: scale(0.96); }

/* ============================================================
   游戏内提示 (Canvas 底部)
   ============================================================ */

#hint-text {
  position: absolute; bottom: 40px; left: 50%;
  transform: translateX(-50%);
  color: var(--c-text-faint);
  font-size: 13px; letter-spacing: 2px;
  z-index: 4;
  pointer-events: none;
  transition: opacity 0.5s ease;
  text-align: center;
  opacity: 0;
}

/* ============================================================
   响应式 — 手机端适配
   ============================================================ */

/* ── 通用触屏优化 ──────────────────────────────────────── */
@media (pointer: coarse) {
  /* 所有按钮增大触控区域 */
  #leaderboard-btn { width: 44px; height: 44px; }
  .lb-tab { padding: 10px 18px; font-size: 13px; }
  #lb-close { padding: 12px 40px; font-size: 15px; }
}

/* ── 小型手机 (320-380px) ──────────────────────────────── */
@media (max-width: 380px) {
  /* 顶部 HUD */
  #score-display { font-size: 34px; }
  #score-unit { font-size: 10px; letter-spacing: 2px; }
  #zone-indicator {
    top: max(8px, env(safe-area-inset-top, 8px));
    left: 8px;
    padding: 3px 10px;
    font-size: 10px;
  }
  #leaderboard-btn {
    top: max(8px, env(safe-area-inset-top, 8px));
    right: 8px;
    width: 36px; height: 36px;
    font-size: 15px;
  }

  /* 连击 & 着陆 */
  #combo-indicator { font-size: 40px; top: 22%; }
  #combo-indicator.super { font-size: 48px; }
  #landing-text { font-size: 24px; top: 34%; }
  #landing-text.perfect { font-size: 32px; }

  /* 标题 */
  .title-main { font-size: 36px; letter-spacing: 6px; }
  .title-sub { font-size: 12px; letter-spacing: 6px; margin-bottom: 20px; }
  .title-start-btn { padding: 12px 44px; font-size: 15px; margin-bottom: 20px; }
  .title-hint { font-size: 13px; letter-spacing: 2px; }

  /* 教程 */
  #tutorial .hand-icon { width: 68px; height: 68px; margin-bottom: 24px; }
  #tutorial .tut-step { font-size: 15px; }
  #tutorial .tut-sub { font-size: 12px; margin-bottom: 20px; padding-left: 30px; }
  #tutorial .tut-btn { padding: 12px 44px; font-size: 15px; }

  /* 游戏结束 */
  .go-card { padding: 24px 20px; max-width: 300px; }
  .go-title { font-size: 15px; }
  .go-score { font-size: 52px; }
  .go-unit { font-size: 13px; }
  .go-stats { gap: 14px; margin-bottom: 16px; }
  .go-stat { min-width: 48px; }
  .go-stat .val { font-size: 20px; }
  .go-stat .lbl { font-size: 10px; }
  .go-divider { margin-bottom: 14px; }
  .go-btn { padding: 12px 44px; font-size: 15px; }

  /* 排行榜 */
  #leaderboard { padding: 40px 12px 30px; }
  #leaderboard h2 { font-size: 19px; }
  .lb-tabs { gap: 4px; margin-bottom: 16px; }
  .lb-tab { padding: 7px 12px; font-size: 11px; }
  .lb-list { max-width: 100%; }
  .lb-item { padding: 10px 12px; gap: 8px; }
  .lb-score { font-size: 15px; }
}

/* ── 中等手机 (381-430px) ──────────────────────────────── */
@media (min-width: 381px) and (max-width: 430px) {
  #score-display { font-size: 40px; }
  #combo-indicator { font-size: 48px; }
  #combo-indicator.super { font-size: 60px; }
  #landing-text { font-size: 26px; }
  #landing-text.perfect { font-size: 36px; }

  .title-main { font-size: 42px; letter-spacing: 10px; }
  .title-start-btn { padding: 14px 52px; font-size: 16px; }

  .go-card { padding: 28px 28px; }
  .go-score { font-size: 60px; }
  .go-stats { gap: 18px; }
  .go-stat .val { font-size: 24px; }
}

/* ── 安全区底部适配 (iPhone X+) ───────────────────────── */
@supports (padding: env(safe-area-inset-bottom)) {
  #hint-text {
    bottom: calc(40px + env(safe-area-inset-bottom));
  }
  #tutorial {
    padding-bottom: env(safe-area-inset-bottom);
  }
  #leaderboard {
    padding-bottom: calc(30px + env(safe-area-inset-bottom));
  }
}

/* ── 平板 / 桌面 (≥768px) ──────────────────────────────── */
@media (min-width: 768px) {
  #score-display { font-size: 52px; }
  #combo-indicator { font-size: 64px; }
  #combo-indicator.super { font-size: 80px; }
  #landing-text { font-size: 32px; }
  #landing-text.perfect { font-size: 44px; }

  .title-main { font-size: 58px; }

  .go-card { padding: 40px 48px; max-width: 380px; }
  .go-score { font-size: 72px; }

  #leaderboard h2 { font-size: 26px; }
  .lb-tab { padding: 10px 20px; font-size: 13px; }
}

/* ── 横屏手机 ─────────────────────────────────────────── */
@media (max-height: 500px) and (orientation: landscape) {
  /* 缩小 HUD */
  #score-panel { top: 4px; }
  #score-display { font-size: 26px; }
  #score-unit { font-size: 9px; }
  #zone-indicator {
    top: 6px; left: 6px;
    padding: 2px 8px; font-size: 9px;
  }
  #leaderboard-btn {
    top: 6px; right: 6px;
    width: 30px; height: 30px; font-size: 14px;
  }

  /* 连击 & 着陆上移 */
  #combo-indicator { font-size: 32px; top: 16%; }
  #combo-indicator.super { font-size: 40px; }
  #landing-text { font-size: 20px; top: 28%; }
  #landing-text.perfect { font-size: 28px; }

  /* 标题紧凑布局 */
  .title-main { font-size: 28px; letter-spacing: 6px; margin-bottom: 4px; }
  .title-sub { font-size: 11px; letter-spacing: 6px; margin-bottom: 12px; }
  .title-start-btn { padding: 8px 32px; font-size: 13px; margin-bottom: 12px; }
  .title-hint { font-size: 12px; margin-bottom: 0; }

  /* 教程 */
  #tutorial .hand-icon { width: 50px; height: 50px; margin-bottom: 12px; }
  #tutorial .tut-step { font-size: 13px; margin-bottom: 4px; }
  #tutorial .tut-step .step-num { width: 18px; height: 18px; font-size: 10px; }
  #tutorial .tut-sub { font-size: 11px; margin-bottom: 14px; padding-left: 26px; }
  #tutorial .tut-btn { padding: 8px 36px; font-size: 14px; }

  /* 游戏结束 */
  .go-card { padding: 16px 24px; max-width: 320px; }
  .go-title { font-size: 14px; margin-bottom: 2px; }
  .go-score { font-size: 38px; }
  .go-unit { font-size: 12px; }
  .go-stats { gap: 12px; margin-bottom: 10px; }
  .go-stat .val { font-size: 18px; }
  .go-stat .lbl { font-size: 9px; }
  .go-divider { margin-bottom: 10px; }
  .go-new-record { font-size: 10px; margin-bottom: 10px; }
  .go-btn { padding: 10px 36px; font-size: 14px; }

  /* 排行榜 */
  #leaderboard { padding: 20px 12px 16px; }
  #leaderboard h2 { font-size: 17px; margin-bottom: 4px; }
  .lb-subtitle { font-size: 10px; margin-bottom: 10px; }
  .lb-tabs { margin-bottom: 14px; gap: 4px; }
  .lb-tab { padding: 6px 10px; font-size: 10px; }
  .lb-item { padding: 8px 10px; }
  .lb-score { font-size: 14px; }
  #lb-close { margin-top: 14px; padding: 8px 28px; font-size: 13px; }

  #hint-text { bottom: 16px; font-size: 11px; }
}