/* ============================================================
   创意工具箱 · 全局样式
   ============================================================ */

/* ---------- 主题变量 ---------- */
:root {
  --accent: #38bdf8;
  --accent-2: #a78bfa;

  --bg: #070b18;
  --bg-soft: #0d1426;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-2: rgba(255, 255, 255, 0.075);
  --border: rgba(255, 255, 255, 0.11);
  --border-strong: rgba(255, 255, 255, 0.2);

  --text: #eef2ff;
  --text-dim: #a8b3cf;
  --text-faint: #6f7c9c;

  --shadow: 0 18px 44px rgba(0, 0, 0, 0.45);
  --radius-lg: 20px;
  --radius: 14px;
  --radius-sm: 10px;

  --ok: #34d399;
  --warn: #fbbf24;
  --bad: #f87171;

  --mono: "JetBrains Mono", "Cascadia Code", Consolas, "SFMono-Regular", Menlo, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

html[data-theme="light"] {
  --bg: #eef2fb;
  --bg-soft: #ffffff;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-2: rgba(255, 255, 255, 0.95);
  --border: rgba(20, 33, 74, 0.12);
  --border-strong: rgba(20, 33, 74, 0.24);

  --text: #101a35;
  --text-dim: #4a5878;
  --text-faint: #7c88a6;

  --shadow: 0 16px 40px rgba(28, 44, 90, 0.14);
}

/* ---------- 基础重置 ---------- */
* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  min-height: 100%;
  font-family: var(--sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.35s ease, color 0.35s ease;
}

h1, h2, h3, h4, p { margin: 0; }
button { font-family: inherit; }
input, textarea, select { font-family: inherit; }
a { color: var(--accent); }

::selection { background: var(--accent); color: #04101f; }

/* ---------- 背景装饰（几何图形） ---------- */
.bg-decor {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.blob {
  position: absolute;
  display: block;
  filter: blur(90px);
  opacity: 0.55;
  border-radius: 50%;
}

.b1 {
  width: 46vw; height: 46vw;
  left: -12vw; top: -14vw;
  background: radial-gradient(circle at 30% 30%, var(--accent), transparent 70%);
}

.b2 {
  width: 38vw; height: 38vw;
  right: -10vw; top: 4vw;
  background: radial-gradient(circle at 60% 40%, var(--accent-2), transparent 70%);
}

.b3 {
  width: 42vw; height: 42vw;
  left: 28vw; bottom: -20vw;
  background: radial-gradient(circle at 50% 50%, #22d3ee, transparent 72%);
  opacity: 0.38;
}

.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 50% 30%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 20%, transparent 78%);
}

html[data-theme="light"] .grid-lines {
  background-image:
    linear-gradient(rgba(20, 33, 74, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 33, 74, 0.05) 1px, transparent 1px);
}

html[data-theme="light"] .blob { opacity: 0.34; }

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 14px clamp(16px, 4vw, 46px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
}

.logo {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  color: var(--accent);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.logo svg { width: 27px; height: 27px; }

.brand-text h1 {
  font-size: 18px;
  letter-spacing: 0.4px;
  font-weight: 700;
}

.brand-text p {
  font-size: 11.5px;
  color: var(--text-faint);
  letter-spacing: 1.4px;
}

.tabs {
  display: flex;
  gap: 6px;
  padding: 5px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
}

.tab {
  position: relative;
  padding: 8px 18px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s, background 0.2s, transform 0.2s;
  white-space: nowrap;
}

.tab:hover { color: var(--text); }

.tab.active {
  color: #05101f;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 20px color-mix(in srgb, var(--accent) 40%, transparent);
}

.tab:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.theme-toggle {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-dim);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}

.theme-toggle:hover { color: var(--text); border-color: var(--border-strong); transform: translateY(-1px); }
.theme-toggle svg { width: 19px; height: 19px; }
html[data-theme="dark"] .ic-sun { display: none; }
html[data-theme="light"] .ic-moon { display: none; }

/* ---------- 主区域 ---------- */
.site-main {
  position: relative;
  z-index: 1;
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(22px, 4vw, 44px) clamp(16px, 4vw, 46px) 60px;
}

.view[hidden] { display: none; }

.cat-intro { margin-bottom: 24px; }

.cat-intro h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  letter-spacing: 0.5px;
}

.cat-intro h2::before {
  content: "";
  display: inline-block;
  width: 10px; height: 10px;
  margin-right: 12px;
  border-radius: 3px;
  transform: rotate(45deg);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  vertical-align: middle;
}

.cat-intro p { color: var(--text-dim); font-size: 14.5px; margin-top: 4px; }

.cat-count {
  display: inline-block;
  margin-top: 10px;
  padding: 3px 12px;
  font-size: 12px;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}

/* ---------- 工具卡片网格 ---------- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(232px, 1fr));
  gap: 16px;
}

.tool-card {
  position: relative;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px;
  text-align: left;
  cursor: pointer;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: inherit;
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}

.tool-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--card-accent, var(--accent)) 22%, transparent), transparent 62%);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  background: var(--surface-2);
}

.tool-card:hover::after { opacity: 1; }
.tool-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.tool-card-icon {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  border-radius: 12px;
  color: var(--card-accent, var(--accent));
  background: color-mix(in srgb, var(--card-accent, var(--accent)) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--accent)) 32%, transparent);
}

.tool-card-icon svg { width: 23px; height: 23px; }

.tool-card-body h3 {
  font-size: 15.5px;
  font-weight: 650;
  margin-bottom: 3px;
}

.tool-card-body p {
  font-size: 12.5px;
  color: var(--text-dim);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tool-card-tag {
  position: absolute;
  top: 12px; right: 12px;
  font-size: 10px;
  letter-spacing: 0.6px;
  color: var(--text-faint);
  opacity: 0;
  transition: opacity 0.2s;
}

.tool-card:hover .tool-card-tag { opacity: 1; }

/* ---------- 工具详情视图 ---------- */
.tool-view { animation: fadeUp 0.32s ease both; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.tool-view-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.tool-view-title h2 { font-size: clamp(19px, 2.6vw, 25px); font-weight: 700; }
.tool-view-title p { font-size: 13.5px; color: var(--text-dim); margin-top: 3px; }

.tool-body {
  padding: clamp(16px, 3vw, 26px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

/* ---------- 通用控件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 17px;
  font-size: 13.5px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  transition: transform 0.16s, border-color 0.16s, background 0.16s, box-shadow 0.16s;
  white-space: nowrap;
}

.btn:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.btn.primary {
  color: #05101f;
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 22px color-mix(in srgb, var(--accent) 34%, transparent);
}

.btn.ghost { background: transparent; }

.btn.small { padding: 6px 12px; font-size: 12.5px; }

.btn-row { display: flex; flex-wrap: wrap; gap: 10px; }

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.field > label,
.field-label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.3px;
}

.input, .textarea, .select {
  width: 100%;
  padding: 10px 13px;
  font-size: 14px;
  color: var(--text);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 0.18s, box-shadow 0.18s;
}

html[data-theme="dark"] .input,
html[data-theme="dark"] .textarea,
html[data-theme="dark"] .select { background: rgba(0, 0, 0, 0.28); }

.input:focus, .textarea:focus, .select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

.input.err { border-color: var(--bad); }

.textarea { min-height: 110px; resize: vertical; line-height: 1.6; font-size: 13.5px; }
.textarea.mono, .input.mono, .mono { font-family: var(--mono); }

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
}

/* 复选 / 单选 */
.check {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  color: var(--text-dim);
  cursor: pointer;
  user-select: none;
}

.check input { width: 17px; height: 17px; accent-color: var(--accent); cursor: pointer; }

/* 结果展示 */
.result {
  margin-top: 18px;
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-soft);
  font-size: 13.5px;
}

html[data-theme="dark"] .result { background: rgba(0, 0, 0, 0.26); }

.kv {
  display: grid;
  grid-template-columns: 128px 1fr;
  gap: 6px 14px;
  align-items: baseline;
}

.kv dt { color: var(--text-faint); font-size: 12.5px; }
.kv dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 13.5px;
  color: var(--text);
  word-break: break-all;
}

.kv.big dd { font-size: 15px; font-weight: 600; }

.hint { font-size: 12.5px; color: var(--text-faint); margin-top: 10px; }
.err { color: var(--bad); font-size: 13px; }
.ok  { color: var(--ok); }

.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0;
}

.stat {
  flex: 1 1 120px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
}

.stat span { display: block; font-size: 11.5px; color: var(--text-faint); letter-spacing: 0.4px; }
.stat strong { font-size: 17px; font-family: var(--mono); color: var(--accent); }

.out-box {
  margin-top: 12px;
  padding: 13px 15px;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--border-strong);
  background: var(--surface);
  font-family: var(--mono);
  font-size: 13.5px;
  word-break: break-all;
  white-space: pre-wrap;
  min-height: 46px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

/* 分段控件 */
.segment {
  display: inline-flex;
  padding: 4px;
  gap: 4px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  flex-wrap: wrap;
}

.segment button {
  padding: 6px 15px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  background: transparent;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.18s, background 0.18s;
}

.segment button.active {
  color: #05101f;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.segment button:hover:not(.active) { color: var(--text); }

/* 标签 / 徽章 */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 11px;
  font-size: 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  font-family: var(--mono);
}

/* 表格 */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 520px;
}

table.data th {
  position: sticky;
  top: 0;
  text-align: left;
  padding: 11px 14px;
  font-size: 12px;
  letter-spacing: 0.5px;
  color: var(--text-faint);
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}

table.data td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
}

table.data tr:last-child td { border-bottom: 0; }
table.data tbody tr:hover td { background: var(--surface); color: var(--text); }
table.data td.mono { font-family: var(--mono); color: var(--accent); }

/* 进度 / 强度条 */
.meter {
  height: 8px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
  border: 1px solid var(--border);
}

.meter i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: var(--bad);
  transition: width 0.3s ease, background 0.3s ease;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  z-index: 90;
  transform: translate(-50%, 24px);
  padding: 11px 22px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text);
  background: var(--bg-soft);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.26s ease, transform 0.26s ease;
}

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

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  padding: 22px 20px 34px;
  text-align: center;
}

.site-footer p { font-size: 12px; color: var(--text-faint); }

/* ============================================================
   工具专属样式
   ============================================================ */

/* --- 塔罗牌 --- */
.tarot-stage {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  margin-top: 20px;
  perspective: 1200px;
}

.tarot-card {
  width: 176px;
  cursor: pointer;
  background: none;
  border: 0;
  padding: 0;
  animation: fadeUp 0.5s ease both;
}

.tarot-card:nth-child(2) { animation-delay: 0.1s; }
.tarot-card:nth-child(3) { animation-delay: 0.2s; }

.tc-inner {
  position: relative;
  width: 100%;
  aspect-ratio: 5 / 8;
  transform-style: preserve-3d;
  transition: transform 0.7s cubic-bezier(0.5, 0.1, 0.2, 1);
}

.tarot-card.flipped .tc-inner { transform: rotateY(180deg); }

.tc-face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 14px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border: 1px solid var(--border-strong);
  overflow: hidden;
}

.tc-back {
  background:
    repeating-linear-gradient(45deg, rgba(255,255,255,0.05) 0 8px, transparent 8px 16px),
    linear-gradient(150deg, #2a1a4d, #101a3d 55%, #0a2450);
}

.tc-back::before {
  content: "";
  position: absolute;
  width: 74%; aspect-ratio: 1;
  border: 1.5px solid rgba(255,255,255,0.32);
  transform: rotate(45deg);
  border-radius: 12px;
}

.tc-back::after {
  content: "✦";
  font-size: 26px;
  color: rgba(255, 255, 255, 0.8);
}

.tc-front {
  transform: rotateY(180deg);
  padding: 14px 10px;
  background: linear-gradient(165deg, #1b2450, #0c1226 60%, #241a44);
  color: #f1f4ff;
}

html[data-theme="light"] .tc-front {
  background: linear-gradient(165deg, #ffffff, #e9eefc 60%, #f4ecff);
  color: #16203f;
}

.tc-front .tc-art { width: 74px; height: 74px; }
.tc-front .tc-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 2px;
  opacity: 0.75;
}
.tc-front .tc-name { font-size: 15px; font-weight: 700; text-align: center; }
.tc-front .tc-en { font-size: 10.5px; letter-spacing: 0.8px; opacity: 0.6; text-transform: uppercase; }
.tc-front .tc-pos {
  margin-top: 4px;
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 999px;
  border: 1px solid currentColor;
  opacity: 0.85;
}

.tc-front.reversed .tc-art { transform: rotate(180deg); }

.tarot-reading {
  margin-top: 22px;
  display: grid;
  gap: 12px;
}

.reading-item {
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
}

.reading-item h4 { font-size: 14px; margin-bottom: 4px; }
.reading-item .pos {
  font-size: 11.5px;
  color: var(--accent);
  letter-spacing: 0.6px;
}
.reading-item p { font-size: 13px; color: var(--text-dim); margin-top: 4px; }

/* --- 抽奖转盘 --- */
.wheel-wrap {
  display: grid;
  grid-template-columns: minmax(260px, 340px) 1fr;
  gap: 26px;
  align-items: start;
}

@media (max-width: 720px) {
  .wheel-wrap { grid-template-columns: 1fr; }
}

.wheel-stage { position: relative; display: grid; place-items: center; }

.wheel-stage canvas { width: 100%; max-width: 340px; height: auto; display: block; }

.wheel-pointer {
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 0; height: 0;
  border-left: 13px solid transparent;
  border-right: 13px solid transparent;
  border-top: 22px solid var(--accent);
  filter: drop-shadow(0 3px 6px rgba(0,0,0,0.4));
  z-index: 2;
}

.wheel-hub {
  position: absolute;
  width: 54px; height: 54px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  color: #05101f;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: 3px solid var(--bg-soft);
  cursor: pointer;
  z-index: 3;
  user-select: none;
}

.wheel-hub:disabled { opacity: 0.6; cursor: not-allowed; }

.wheel-result {
  margin-top: 16px;
  padding: 16px;
  text-align: center;
  border-radius: var(--radius);
  border: 1px dashed var(--border-strong);
  background: var(--surface);
  font-size: 16px;
  font-weight: 700;
  min-height: 58px;
  display: grid;
  place-items: center;
}

/* --- 颜色工具 --- */
.swatch-big {
  height: 132px;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 19px;
  font-weight: 700;
  transition: background 0.25s ease, color 0.25s ease;
  box-shadow: var(--shadow);
}

.palette { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }

.palette .sw {
  flex: 1 1 80px;
  min-width: 74px;
  aspect-ratio: 1 / 0.82;
  border-radius: 12px;
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  padding-bottom: 7px;
  font-family: var(--mono);
  font-size: 10.5px;
  cursor: pointer;
  transition: transform 0.18s;
}

.palette .sw:hover { transform: translateY(-4px); }

input[type="color"] {
  width: 100%;
  height: 46px;
  padding: 3px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-soft);
  cursor: pointer;
}

input[type="range"] { width: 100%; accent-color: var(--accent); cursor: pointer; }

/* --- 骰子 --- */
.dice-area { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; margin: 20px 0; }

.die {
  width: 92px; height: 92px;
  border-radius: 18px;
  background: linear-gradient(160deg, #ffffff, #dbe3f5);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow), inset 0 -4px 0 rgba(0,0,0,0.08);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  padding: 12px;
  gap: 4px;
}

.die i {
  width: 100%; height: 100%;
  border-radius: 50%;
  background: #16203f;
  opacity: 0;
  transition: opacity 0.15s;
}

.die i.on { opacity: 1; }

.coin {
  width: 128px; height: 128px;
  margin: 14px auto;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 34px;
  font-weight: 800;
  color: #4a3200;
  background: radial-gradient(circle at 34% 30%, #fff3c4, #f0b429 62%, #b47d09);
  border: 5px solid #ffe08a;
  box-shadow: var(--shadow);
  transition: transform 0.2s;
}

.coin.spin { animation: coinSpin 0.85s linear; }

@keyframes coinSpin {
  from { transform: rotateY(0deg) scale(1); }
  50%  { transform: rotateY(900deg) scale(1.08); }
  to   { transform: rotateY(1800deg) scale(1); }
}

/* --- 游戏通用 --- */
.game-shell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.game-hud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  width: 100%;
}

.game-hud .stat { text-align: center; flex: 1 1 96px; }
.game-hud .stat strong { font-size: 20px; }

canvas.game-canvas {
  display: block;
  width: 100%;
  max-width: 440px;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #0a1122;
  touch-action: none;
}

.game-overlay {
  position: relative;
  width: 100%;
  max-width: 440px;
}

.game-overlay .overlay-card {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  gap: 8px;
  align-content: center;
  text-align: center;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 18px;
}

.game-overlay .overlay-card[hidden] { display: none; }
.game-overlay .overlay-card h3 { font-size: 21px; }
.game-overlay .overlay-card p { font-size: 13px; color: var(--text-dim); }

.pad {
  display: grid;
  grid-template-columns: repeat(3, 54px);
  grid-template-rows: repeat(3, 54px);
  gap: 7px;
  justify-content: center;
}

.pad button {
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font-size: 19px;
  cursor: pointer;
}

.pad button:active { background: var(--accent); color: #05101f; }
.pad .empty { visibility: hidden; }

/* --- 2048 --- */
.g2048 {
  position: relative;
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1;
  padding: 10px;
  border-radius: var(--radius);
  background: rgba(120, 130, 160, 0.18);
  border: 1px solid var(--border);
  touch-action: none;
  user-select: none;
}

.g2048-grid {
  position: absolute;
  inset: 10px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 10px;
}

.g2048-cells {
  position: absolute;
  inset: 10px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 10px;
  pointer-events: none;
}

.cell-bg { border-radius: 8px; background: rgba(120, 130, 160, 0.16); }

.tile {
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: clamp(14px, 4.2vw, 24px);
  color: #17223d;
  background: #eee4da;
  transition: transform 0.12s ease;
  animation: tilePop 0.16s ease;
}

@keyframes tilePop {
  from { transform: scale(0.6); opacity: 0.4; }
  to   { transform: scale(1); opacity: 1; }
}

/* --- 记忆翻牌 --- */
.memory-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 11px;
  width: 100%;
  max-width: 400px;
}

.mem-card {
  aspect-ratio: 3 / 4;
  border-radius: 11px;
  border: 1px solid var(--border);
  background: linear-gradient(150deg, #2a1a4d, #12203f);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: clamp(20px, 6vw, 30px);
  color: #fff;
  transition: transform 0.2s ease, background 0.2s ease;
  transform-style: preserve-3d;
  padding: 0;
}

.mem-card span { opacity: 0; transition: opacity 0.2s; transform: scale(0.5); }
.mem-card.flipped { background: linear-gradient(150deg, #dbe6ff, #f4f7ff); color: #16203f; }
.mem-card.flipped span { opacity: 1; transform: scale(1); }
.mem-card.matched { opacity: 0.42; cursor: default; background: linear-gradient(150deg, #a7f3d0, #d1fae5); }
.mem-card.matched span { opacity: 1; transform: scale(1); }

/* --- 井字棋 --- */
.ttt-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
  width: 100%;
  max-width: 330px;
}

.ttt-cell {
  aspect-ratio: 1;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-size: clamp(30px, 9vw, 44px);
  font-weight: 700;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.15s, transform 0.15s;
  padding: 0;
}

.ttt-cell:hover:not(:disabled) { background: var(--surface); transform: scale(1.03); }
.ttt-cell.x { color: var(--accent); }
.ttt-cell.o { color: var(--accent-2); }
.ttt-cell:disabled { cursor: default; }
.ttt-cell.win { background: color-mix(in srgb, var(--ok) 30%, transparent); border-color: var(--ok); }

/* --- 猜数字 --- */
.guess-log {
  width: 100%;
  max-height: 210px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 12px;
}

.guess-log .row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 13px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 13px;
}

.guess-log .row b { font-family: var(--mono); font-size: 15px; }

/* --- 单位换算 --- */
.conv-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: end;
}

.conv-row .swap { margin-bottom: 14px; }

@media (max-width: 560px) {
  .conv-row { grid-template-columns: 1fr; }
  .conv-row .swap { margin: 0 auto; }
  .kv { grid-template-columns: 1fr; }
  .kv dt { margin-top: 8px; }
}

/* --- 响应式 --- */
@media (max-width: 640px) {
  .site-header { gap: 12px; }
  .brand-text p { display: none; }
  .tabs { order: 3; width: 100%; justify-content: center; }
  .tab { flex: 1; padding: 8px 10px; font-size: 13px; }
  .tool-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}