/* ==========================================================================
   开测倒计时 · 前台样式
   三套皮肤由后台「主题与页脚 → 页面风格」切换，JS 写到 <html data-skin="...">
     ink     国风宣纸（默认，适合武侠/国风题材）
     neon    深色霓虹（科技感、玻璃拟态）
     arcade  复古像素（街机、扫描线）
   强调色 theme.accent / theme.accent2 留空时，使用各皮肤自带配色
   ========================================================================== */

/* ---------------------------------------------------------------- 基础重置 */

* { box-sizing: border-box; }

/* 关键：作者样式里的 display 会覆盖浏览器对 hidden 属性的 display:none，
   而本页大量依赖 el.hidden 来切换区块，所以这里强制让 hidden 生效 */
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ==========================================================================
   皮肤 1：国风宣纸（默认）
   ========================================================================== */

html, html[data-skin="ink"] {
  --bg: #f4ede1;
  --panel: rgba(255, 253, 247, 0.66);
  --panel-strong: rgba(255, 253, 247, 0.92);
  --line: rgba(74, 56, 34, 0.18);
  --line-strong: rgba(74, 56, 34, 0.34);
  --text: #2a241c;
  --muted: #857658;
  --accent: #b23a2f;
  --accent-2: #9a7b34;
  --accent-soft: rgba(178, 58, 47, 0.12);
  --accent2-soft: rgba(154, 123, 52, 0.16);
  --radius: 6px;
  --shadow: 0 10px 26px rgba(96, 74, 44, 0.1);
  --hdr-bg: rgba(244, 237, 225, 0.9);
  --card-bg: linear-gradient(180deg, rgba(255, 253, 248, 0.86), rgba(252, 247, 238, 0.7));
  --unit-bg: linear-gradient(180deg, #fffdf8, #f7f0e3);
  --sub-bg: rgba(255, 253, 248, 0.66);
  --input-bg: rgba(255, 253, 248, 0.9);
  --track-bg: rgba(74, 56, 34, 0.12);
  --sep-color: rgba(74, 56, 34, 0.3);
  --num-color: #241f18;
  --num-shadow: none;
  --btn-text: #fffaf2;
  --btn-radius: 4px;
  --ok: #4a7c59;
  --ok-soft: rgba(74, 124, 89, 0.14);
  --title-color: #241f18;
  --title-fill: #241f18;
  --title-bg: none;
  --font-body: "Songti SC", "STSong", "SimSun", "Source Han Serif SC", "Noto Serif CJK SC", Georgia, serif;
  --font-display: "STKaiti", "KaiTi", "Kaiti SC", "楷体", "Songti SC", "SimSun", serif;
  --font-num: "STKaiti", "KaiTi", "Times New Roman", "Songti SC", serif;
  --hairline: rgba(74, 56, 34, 0.14);
}

/* 宣纸质感：纤维颗粒 + 暖色晕染 */
html[data-skin="ink"] .bg {
  background:
    radial-gradient(1100px 620px at 50% -8%, rgba(178, 58, 47, 0.07), transparent 68%),
    radial-gradient(760px 520px at 88% 12%, rgba(154, 123, 52, 0.12), transparent 70%),
    radial-gradient(680px 560px at 6% 88%, rgba(120, 96, 60, 0.1), transparent 72%),
    linear-gradient(180deg, #f6f0e4 0%, #f1e8d9 55%, #f5efe4 100%);
}

html[data-skin="ink"] .bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(rgba(120, 95, 60, 0.075) 1px, transparent 1.3px),
    radial-gradient(rgba(120, 95, 60, 0.055) 1px, transparent 1.3px);
  background-size: 6px 6px, 13px 13px;
  background-position: 0 0, 4px 5px;
}

html[data-skin="ink"] .bg-glow { display: none; }

html[data-skin="ink"] .bg-grid {
  background-image:
    linear-gradient(rgba(74, 56, 34, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 56, 34, 0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(circle at 50% 20%, #000 0%, transparent 66%);
  mask-image: radial-gradient(circle at 50% 20%, #000 0%, transparent 66%);
}

/* 印章感的 Logo */
html[data-skin="ink"] .brand-logo {
  background: var(--accent);
  color: #fff8ee;
  border-radius: 3px;
  box-shadow: 0 2px 0 rgba(120, 40, 32, 0.35);
  font-family: var(--font-display);
  letter-spacing: 0;
}

html[data-skin="ink"] .card,
html[data-skin="ink"] .cd-unit { box-shadow: var(--shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.7); }

html[data-skin="ink"] .card::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(74, 56, 34, 0.1);
  border-radius: 3px;
  pointer-events: none;
}

html[data-skin="ink"] .card-title::before { width: 3px; background: var(--accent); }

html[data-skin="ink"] .tag {
  border: 1px solid var(--accent);
  color: var(--accent);
  background: rgba(178, 58, 47, 0.06);
  border-radius: 3px;
  letter-spacing: 3px;
}

html[data-skin="ink"] .btn--primary {
  background: var(--accent);
  color: var(--btn-text);
  border-radius: var(--btn-radius);
  box-shadow: 0 3px 0 rgba(122, 38, 30, 0.5);
}

html[data-skin="ink"] .btn--primary:hover { background: #9d3227; box-shadow: 0 3px 0 rgba(122, 38, 30, 0.6); }

html[data-skin="ink"] .btn--ghost {
  background: rgba(255, 253, 248, 0.7);
  border-color: var(--line-strong);
  color: #4a3c28;
  border-radius: var(--btn-radius);
}

html[data-skin="ink"] .btn--ghost:hover { background: #fffdf8; }

html[data-skin="ink"] .cd-num {
  font-family: var(--font-num);
  font-weight: 700;
  letter-spacing: 2px;
}

html[data-skin="ink"] .cd-label { letter-spacing: 4px; color: #8a7a5c; }

html[data-skin="ink"] .progress-bar { border: 1px solid var(--line); padding: 2px; border-radius: 999px; }
html[data-skin="ink"] .progress-bar > i { border-radius: 999px; background: linear-gradient(90deg, var(--accent), #d08a4a); }

html[data-skin="ink"] .sub-input { border-radius: 4px; border-color: var(--line-strong); }
html[data-skin="ink"] .sub-input:focus { box-shadow: 0 0 0 3px rgba(178, 58, 47, 0.14); }
html[data-skin="ink"] .sub-form .btn { border-radius: 4px; }

html[data-skin="ink"] .announce-date { background: rgba(178, 58, 47, 0.08); color: var(--accent); border-radius: 3px; }
html[data-skin="ink"] .notice-item h3 { color: #8a5a22; }
html[data-skin="ink"] .notice-item,
html[data-skin="ink"] .announce-item,
html[data-skin="ink"] .faq-item { border-color: var(--line); }
html[data-skin="ink"] .faq-item summary::after { color: var(--accent); }
html[data-skin="ink"] .started { border-color: var(--line-strong); background: radial-gradient(600px 200px at 50% 0%, rgba(178, 58, 47, 0.08), rgba(255, 253, 248, 0.7)); }
html[data-skin="ink"] .started-title { background: none; color: var(--accent); -webkit-text-fill-color: var(--accent); }
html[data-skin="ink"] .tag--live { color: var(--ok); background: var(--ok-soft); border-color: var(--ok); }
html[data-skin="ink"] .bgm-btn { border-radius: 4px; color: var(--accent); }
html[data-skin="ink"] .footer { background: rgba(244, 237, 225, 0.6); }

/* ==========================================================================
   皮肤 2：深色霓虹
   ========================================================================== */

html[data-skin="neon"] {
  --bg: #070b16;
  --panel: rgba(255, 255, 255, 0.045);
  --panel-strong: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #e9edf9;
  --muted: #8e9ab8;
  --accent: #4fd1c5;
  --accent-2: #8b7cf6;
  --accent-soft: rgba(79, 209, 197, 0.18);
  --accent2-soft: rgba(139, 124, 246, 0.18);
  --radius: 18px;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  --hdr-bg: rgba(7, 11, 22, 0.72);
  --card-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.02));
  --unit-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.02));
  --sub-bg: rgba(0, 0, 0, 0.2);
  --input-bg: rgba(0, 0, 0, 0.28);
  --track-bg: rgba(255, 255, 255, 0.08);
  --sep-color: rgba(255, 255, 255, 0.28);
  --num-color: #fff;
  --num-shadow: 0 0 22px var(--accent-soft);
  --btn-text: #06101a;
  --btn-radius: 999px;
  --ok: #7ef0c0;
  --ok-soft: rgba(126, 240, 192, 0.16);
  --title-bg: linear-gradient(120deg, #ffffff 10%, var(--accent) 55%, var(--accent-2) 95%);
  --title-color: transparent;
  --title-fill: transparent;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  --font-display: var(--font-body);
  --font-num: ui-monospace, "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
  --hairline: rgba(255, 255, 255, 0.06);
}

html[data-skin="neon"] .bg {
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(139, 124, 246, 0.16), transparent 70%),
    radial-gradient(900px 500px at 85% 20%, var(--accent-soft), transparent 70%),
    linear-gradient(180deg, #070b16 0%, #05070f 60%, #070b16 100%);
}

html[data-skin="neon"] .bg-glow {
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.5;
  background: var(--accent);
  top: -160px;
  left: -120px;
  animation: float 16s ease-in-out infinite;
}

html[data-skin="neon"] .bg-glow--2 {
  background: var(--accent-2);
  top: auto;
  left: auto;
  right: -160px;
  bottom: -200px;
  animation-delay: -8s;
}

html[data-skin="neon"] .bg-grid {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
}

/* ==========================================================================
   皮肤 3：复古像素
   ========================================================================== */

html[data-skin="arcade"] {
  --bg: #0a0520;
  --panel: rgba(58, 36, 128, 0.35);
  --panel-strong: rgba(58, 36, 128, 0.55);
  --line: #2c1c5e;
  --line-strong: #4a2f9e;
  --text: #eae6ff;
  --muted: #9c8fd6;
  --accent: #39ff88;
  --accent-2: #ff3d8b;
  --accent-soft: rgba(57, 255, 136, 0.18);
  --accent2-soft: rgba(255, 61, 139, 0.18);
  --radius: 0px;
  --shadow: 6px 6px 0 rgba(0, 0, 0, 0.55);
  --hdr-bg: rgba(10, 5, 32, 0.9);
  --card-bg: #130a31;
  --unit-bg: #180d3c;
  --sub-bg: #0f0729;
  --input-bg: #0b0524;
  --track-bg: #241456;
  --sep-color: rgba(156, 143, 214, 0.5);
  --num-color: #eafff4;
  --num-shadow: 3px 0 0 var(--accent-2), -3px 0 0 #22d3ee;
  --btn-text: #06131f;
  --btn-radius: 0px;
  --ok: #39ff88;
  --ok-soft: rgba(57, 255, 136, 0.14);
  --title-bg: none;
  --title-color: var(--accent);
  --title-fill: var(--accent);
  --font-body: ui-monospace, "SFMono-Regular", "Cascadia Mono", Consolas, "Courier New",
    "Microsoft YaHei", monospace;
  --font-display: var(--font-body);
  --font-num: ui-monospace, "SFMono-Regular", Consolas, "Courier New", monospace;
  --hairline: #241456;
}

html[data-skin="arcade"] .bg {
  background:
    radial-gradient(900px 520px at 50% -10%, rgba(255, 61, 139, 0.14), transparent 70%),
    linear-gradient(180deg, #0a0520 0%, #06031a 70%, #0a0520 100%);
}

html[data-skin="arcade"] .bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(180deg, rgba(0, 0, 0, 0.34) 0 1px, transparent 1px 3px);
}

html[data-skin="arcade"] .bg-glow { display: none; }

html[data-skin="arcade"] .bg-grid {
  background-image:
    linear-gradient(rgba(74, 47, 158, 0.55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 47, 158, 0.55) 1px, transparent 1px);
  background-size: 32px 32px;
}

html[data-skin="arcade"] .hero-title {
  text-shadow: 3px 0 var(--accent-2), -3px 0 #22d3ee;
  letter-spacing: 3px;
}

html[data-skin="arcade"] .brand-logo { border: 2px solid var(--accent); background: transparent; color: var(--accent); }

html[data-skin="arcade"] .card,
html[data-skin="arcade"] .cd-unit,
html[data-skin="arcade"] .started {
  border-width: 2px;
  border-color: var(--line);
  box-shadow: var(--shadow);
}

html[data-skin="arcade"] .card-title::before { width: 12px; height: 12px; background: var(--accent); }

html[data-skin="arcade"] .tag {
  border: 2px solid var(--accent);
  border-radius: 0;
  letter-spacing: 2px;
}

html[data-skin="arcade"] .btn { border-width: 2px; letter-spacing: 1px; }

html[data-skin="arcade"] .btn--primary {
  background: var(--accent);
  color: var(--btn-text);
  box-shadow: 4px 4px 0 var(--accent-2);
}

html[data-skin="arcade"] .btn--ghost { border-color: var(--line-strong); background: #150b36; }
html[data-skin="arcade"] .btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

html[data-skin="arcade"] .progress-bar { border: 2px solid var(--line); }
html[data-skin="arcade"] .progress-bar > i { background: repeating-linear-gradient(90deg, var(--accent) 0 8px, #1f8f52 8px 16px); }

html[data-skin="arcade"] .sub-input { border-width: 2px; }
html[data-skin="arcade"] .sub-input:focus { border-color: var(--accent); box-shadow: 3px 3px 0 var(--accent-2); }

html[data-skin="arcade"] .started { border-color: var(--accent); background: radial-gradient(600px 200px at 50% 0%, rgba(57, 255, 136, 0.12), #130a31); }
html[data-skin="arcade"] .started-title { background: none; color: var(--accent); -webkit-text-fill-color: var(--accent); text-shadow: 2px 0 var(--accent-2); }

html[data-skin="arcade"] .announce-date { border-radius: 0; background: rgba(57, 255, 136, 0.12); color: var(--accent); }
html[data-skin="arcade"] .notice-item h3 { color: var(--accent); }
html[data-skin="arcade"] .notice-item,
html[data-skin="arcade"] .announce-item,
html[data-skin="arcade"] .faq-item { border-width: 2px; }
html[data-skin="arcade"] .bgm-btn { border-radius: 0; border-width: 2px; color: var(--accent); }

/* ==========================================================================
   公共结构（引用上面的变量，三套皮肤共用）
   ========================================================================== */

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.bg-grid {
  position: absolute;
  inset: -2px;
  -webkit-mask-image: radial-gradient(circle at 50% 28%, #000 0%, transparent 72%);
  mask-image: radial-gradient(circle at 50% 28%, #000 0%, transparent 72%);
}

@keyframes float {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(30px, 40px, 0); }
}

/* ---------------------------------------------------------------- 顶栏 */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(16px, 4vw, 40px);
  background: var(--hdr-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hairline);
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }

.brand-logo {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  font-size: 15px;
  letter-spacing: 0.5px;
  color: var(--btn-text);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 18px var(--accent-soft);
}

.brand-name { font-size: 16px; letter-spacing: 0.4px; }

.topnav { display: flex; gap: clamp(10px, 2vw, 22px); }

.topnav-link {
  font-size: 14px;
  color: var(--muted);
  padding: 6px 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.topnav-link:hover { color: var(--text); border-color: var(--accent); }

/* ---------------------------------------------------------------- 布局 */

.wrap {
  width: min(1080px, 100%);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px) 40px;
}

.hero {
  padding: clamp(36px, 8vw, 76px) 0 clamp(28px, 5vw, 46px);
  text-align: center;
}

.tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--line);
}

.tag--live {
  color: var(--ok);
  background: var(--ok-soft);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--ok-soft); }
  50% { box-shadow: 0 0 0 10px transparent; }
}

.hero-title {
  margin: 18px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(26px, 5.4vw, 52px);
  line-height: 1.2;
  letter-spacing: 1px;
  font-weight: 800;
  background-image: var(--title-bg);
  -webkit-background-clip: text;
  background-clip: text;
  color: var(--title-color);
  -webkit-text-fill-color: var(--title-fill);
}

.hero-sub {
  margin: 0 auto;
  max-width: 640px;
  color: var(--muted);
  font-size: clamp(14px, 2vw, 16px);
}

/* ------------------------------------------------------------ 倒计时 */

.countdown {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(6px, 1.6vw, 16px);
  margin: clamp(26px, 5vw, 44px) 0 0;
}

.cd-unit {
  position: relative;
  min-width: clamp(66px, 15vw, 118px);
  padding: clamp(12px, 2.4vw, 20px) clamp(6px, 1.6vw, 16px);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--unit-bg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.cd-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  font-size: clamp(30px, 7.4vw, 62px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: 1px;
  color: var(--num-color);
  text-shadow: var(--num-shadow);
  transition: transform 0.18s ease;
}

.cd-num.is-tick { transform: translateY(-2px) scale(1.03); }

.cd-label {
  margin-top: 6px;
  font-size: clamp(11px, 1.6vw, 13px);
  color: var(--muted);
  letter-spacing: 2px;
}

.cd-sep {
  font-size: clamp(18px, 3vw, 30px);
  font-weight: 700;
  color: var(--sep-color);
  transform: translateY(-6px);
}

/* 已开测状态 */
.started {
  margin: clamp(26px, 5vw, 44px) 0 0;
  padding: clamp(22px, 4vw, 34px);
  border-radius: var(--radius);
  border: 1px solid var(--accent);
  background: radial-gradient(600px 200px at 50% 0%, var(--accent-soft), var(--panel));
  box-shadow: var(--shadow);
}

.started-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 5vw, 40px);
  font-weight: 800;
  letter-spacing: 1px;
  background-image: linear-gradient(120deg, var(--ok), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.started-sub { margin-top: 8px; color: var(--muted); font-size: 14px; }

.cd-hint { margin: 16px 0 0; font-size: 13px; color: var(--muted); }

/* 进度条 */
.progress { margin: 22px auto 0; max-width: 620px; }

.progress-bar {
  height: 8px;
  border-radius: 999px;
  background: var(--track-bg);
  overflow: hidden;
}

.progress-bar > i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 16px var(--accent-soft);
  transition: width 0.6s ease;
}

.progress-text { margin-top: 8px; font-size: 12px; color: var(--muted); }

/* 按钮 */
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-top: clamp(24px, 4vw, 36px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 30px;
  border-radius: var(--btn-radius, 999px);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, opacity 0.2s;
}

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

.btn--primary {
  color: var(--btn-text);
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  box-shadow: 0 12px 30px var(--accent-soft);
}

.btn--primary:hover { box-shadow: 0 16px 38px var(--accent2-soft); }

.btn--ghost {
  color: var(--text);
  border-color: var(--line-strong);
  background: var(--panel);
}

.btn--ghost:hover { background: var(--panel-strong); }

.btn[disabled] { opacity: 0.6; cursor: not-allowed; }

.sub-count { margin: 18px 0 0; font-size: 13px; color: var(--muted); }

/* ---------------------------------------------------------------- 卡片 */

.card {
  position: relative;
  margin-top: clamp(18px, 3vw, 26px);
  padding: clamp(20px, 4vw, 32px);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card-bg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  scroll-margin-top: 84px;
}

.card-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.6vw, 20px);
  font-weight: 700;
  letter-spacing: 0.6px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-title::before {
  content: "";
  width: 4px;
  height: 18px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
}

.card-text { margin: 0 0 16px; color: var(--muted); font-size: 14px; }

/* 视频 */
.video-box {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
  border: 1px solid var(--line);
}

.video-box iframe,
.video-box video { width: 100%; height: 100%; border: 0; display: block; }

/* 预约表单 */
.sub-form { display: flex; gap: 12px; flex-wrap: wrap; }

.sub-input {
  flex: 1 1 260px;
  min-height: 48px;
  padding: 0 18px;
  border-radius: var(--btn-radius, 999px);
  border: 1px solid var(--line-strong);
  background: var(--input-bg);
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.sub-input::placeholder { color: var(--muted); opacity: 0.75; }

.sub-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.sub-msg { margin: 12px 0 0; min-height: 20px; font-size: 14px; color: var(--muted); }
.sub-msg.is-ok { color: var(--ok); }
.sub-msg.is-err { color: #e0575b; }

/* 公告 */
.announce-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }

.announce-item {
  padding: 16px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--sub-bg);
}

.announce-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.announce-date {
  font-size: 12px;
  color: var(--accent);
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
}

.announce-title { font-weight: 600; }

.announce-body {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  white-space: pre-line;
}

/* 须知 */
.notice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.notice-item {
  padding: 16px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--sub-bg);
}

.notice-item h3 {
  margin: 0 0 6px;
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 0.5px;
}

.notice-item p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  white-space: pre-line;
}

/* FAQ */
.faq { margin-top: 18px; display: grid; gap: 10px; }

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--sub-bg);
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 600;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: "+";
  font-size: 18px;
  color: var(--accent);
  transition: transform 0.2s;
}

.faq-item[open] summary::after { transform: rotate(45deg); }

.faq-item p {
  margin: 0;
  padding: 0 18px 16px;
  font-size: 14px;
  color: var(--muted);
  white-space: pre-line;
}

/* 页脚 */
.footer {
  padding: 34px 20px 46px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--hairline);
}

.footer p { margin: 4px 0; }

.footer-icp a { color: var(--muted); text-decoration: underline dotted; }

/* BGM 按钮 */
.bgm-btn {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--hdr-bg);
  color: var(--accent);
  font-size: 20px;
  cursor: pointer;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  transition: transform 0.2s, opacity 0.2s;
}

.bgm-btn:hover { transform: scale(1.06); }

.bgm-btn.is-off { color: var(--muted); }

.bgm-btn.is-off::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 24px;
  height: 2px;
  background: currentColor;
  transform: translate(-50%, -50%) rotate(-45deg);
}

/* 加载态：配置没回来之前先隐藏正文，避免闪烁
   （只在 JS 可用时生效，且 index.html 里有 4 秒兜底） */
html.js body:not([data-ready="1"]) main,
html.js body:not([data-ready="1"]) .footer { opacity: 0; }

main, .footer { transition: opacity 0.35s ease; }

/* ---------------------------------------------------------------- 响应式 */

@media (max-width: 720px) {
  .topnav { gap: 12px; }
  .topnav-link { font-size: 13px; }
  .card { padding: 20px 16px; }
  .btn { width: 100%; }
  .sub-form .btn { width: 100%; }
  .cd-num { letter-spacing: 0; }
}

@media (max-width: 480px) {
  .cd-sep { display: none; }
  .cd-unit { min-width: 0; flex: 1 1 0; }
  .brand-name { font-size: 15px; }
  .topnav { display: none; }
  html[data-skin="arcade"] .cd-num { text-shadow: 2px 0 0 var(--accent-2); }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}