/* ============================================
   温州中学科学及幻想文学社 · 网站样式
   复古未来主义 · 黄铜星图（Retro-Futurism / Brass Celestial）
   深靛夜幕 + 黄铜金 / 珊瑚橙 / 复古青 · 太阳射线 · 半色调网点
   ============================================ */

@import url("https://fonts.googleapis.com/css2?family=ZCOOL+XiaoWei&family=Noto+Sans+SC:wght@400;500;700&family=IBM+Plex+Mono:wght@400;500&family=Michroma&display=swap");

:root {
  --bg: #130e26;
  --bg-soft: #1b1536;
  --surface: rgba(232, 177, 76, 0.06);
  --surface-hover: rgba(232, 177, 76, 0.11);
  --border: rgba(232, 177, 76, 0.16);
  --border-strong: rgba(242, 205, 138, 0.34);
  --text: #f7efdc;
  --text-dim: #a89b85;
  --accent: #e8b14c;        /* 黄铜金 */
  --accent-2: #ff7a59;      /* 珊瑚橙 */
  --teal: #3fd8c5;          /* 复古青 */
  --gold: #ffd166;
  --danger: #ff6b6b;
  --radius: 14px;
  --maxw: 1120px;
  --font: "Noto Sans SC", system-ui, -apple-system, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-display: "ZCOOL XiaoWei", "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas,
    "Courier New", monospace;
  --font-retro: "Michroma", var(--font-mono); /* 复古未来拉丁字形 */
  --shadow-glow: 0 0 0 1px rgba(232, 177, 76, 0.28),
    0 18px 50px -18px rgba(232, 177, 76, 0.3);
  --chamfer: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---------- 复古深空氛围：暖色星云 + 星点 + 半色调网点 + 暗角 ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    /* 暖色星云光晕 */
    radial-gradient(58rem 30rem at 86% -8%, rgba(255, 122, 89, 0.13), transparent 62%),
    radial-gradient(46rem 26rem at 6% 6%, rgba(232, 177, 76, 0.13), transparent 55%),
    radial-gradient(40rem 30rem at 50% 118%, rgba(63, 216, 197, 0.09), transparent 60%),
    /* 星点（暖奶油色，多层错位平铺） */
    radial-gradient(1px 1px at 22% 32%, rgba(255, 238, 200, 0.85), transparent 100%),
    radial-gradient(1.5px 1.5px at 61% 71%, rgba(255, 236, 190, 0.5), transparent 100%),
    radial-gradient(1px 1px at 84% 22%, rgba(255, 226, 160, 0.6), transparent 100%),
    radial-gradient(1px 1px at 43% 12%, rgba(255, 244, 214, 0.75), transparent 100%),
    radial-gradient(1.2px 1.2px at 8% 62%, rgba(255, 226, 170, 0.45), transparent 100%),
    radial-gradient(1px 1px at 73% 86%, rgba(63, 216, 197, 0.4), transparent 100%),
    radial-gradient(1px 1px at 34% 88%, rgba(255, 214, 140, 0.6), transparent 100%),
    radial-gradient(1.2px 1.2px at 92% 55%, rgba(255, 190, 120, 0.55), transparent 100%),
    /* 复古半色调网点（低对比） */
    radial-gradient(1.6px 1.6px at 12% 45%, rgba(232, 177, 76, 0.1), transparent 100%),
    radial-gradient(1.6px 1.6px at 56% 28%, rgba(255, 122, 89, 0.08), transparent 100%),
    radial-gradient(1.6px 1.6px at 38% 78%, rgba(63, 216, 197, 0.07), transparent 100%),
    /* 暗角 */
    radial-gradient(130% 100% at 50% 0%, transparent 62%, rgba(8, 4, 20, 0.55) 100%),
    var(--bg);
  background-repeat: no-repeat, no-repeat, no-repeat,
    repeat, repeat, repeat, repeat, repeat, repeat, repeat, repeat,
    repeat, repeat, repeat,
    no-repeat, no-repeat;
  background-size: auto, auto, auto,
    260px 260px, 380px 380px, 300px 300px, 340px 340px, 410px 410px,
    320px 320px, 360px 360px, 440px 440px,
    240px 240px, 270px 270px, 300px 300px,
    auto, auto;
  animation: starTwinkle 6s ease-in-out infinite alternate;
}

/* 胶片颗粒 + 极细扫描线 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.06;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

@keyframes starTwinkle {
  from { opacity: 0.75; }
  to { opacity: 1; }
}

::selection {
  background: rgba(232, 177, 76, 0.3);
  color: #fff;
}

/* 黄铜滚动条 */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(232, 177, 76, 0.4), rgba(255, 122, 89, 0.4));
  border-radius: 999px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, rgba(232, 177, 76, 0.6), rgba(255, 122, 89, 0.6)); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

/* 通用入场动效 */
@keyframes riseIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(19, 14, 38, 0.78);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  border-bottom: 1px solid var(--border);
}
.nav::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232, 177, 76, 0.5), rgba(255, 122, 89, 0.45), rgba(63, 216, 197, 0.4), transparent);
  opacity: 0.8;
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: nowrap;
}
.brand {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  transition: color 0.2s;
}
.brand:hover { color: var(--accent); text-decoration: none; }
.brand-mark {
  position: relative;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: #1c0f04;
  font-weight: 700;
  box-shadow: 0 0 16px rgba(232, 177, 76, 0.4);
}
/* 品牌标记外的细线徽章（复古描边） */
.brand::before {
  content: "";
  display: inline-flex;
  width: 0.55rem;
  height: 0.55rem;
  border: 1px solid var(--accent);
  transform: rotate(45deg);
  opacity: 0.7;
}
.nav-links {
  display: flex;
  gap: 0.35rem;
  align-items: center;
}
.nav-links a {
  color: var(--text-dim);
  font-size: 0.95rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  position: relative;
  transition: color 0.2s, background 0.2s;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 0.1rem;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: translateX(-50%);
  transition: width 0.25s ease;
}
.nav-links a:hover { color: var(--text); background: var(--surface); text-decoration: none; }
.nav-links a:hover::after { width: 42%; }
.nav-links a.active {
  color: var(--accent);
  background: rgba(232, 177, 76, 0.09);
}
.nav-links a.active::after { width: 42%; }

/* 移动端导航 */
.nav-toggle {
  display: none;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 0.4rem 0.65rem;
  font-size: 1rem;
  cursor: pointer;
  transition: border-color 0.2s;
}
.nav-toggle:hover { border-color: var(--accent); }

/* ---------- 主容器 ---------- */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.8rem 1.25rem 4.5rem;
}

.page-head { margin-bottom: 2.4rem; animation: riseIn 0.6s ease both; }
.page-head h1 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.5rem);
  font-weight: 400;
  letter-spacing: 0.03em;
  line-height: 1.3;
}
.page-head .sub {
  color: var(--text-dim);
  margin-top: 0.6rem;
  font-size: 1rem;
  max-width: 40rem;
}

/* ---------- 首页英雄区（全宽，背景铺满屏幕） ---------- */
.hero {
  position: relative;
  padding: clamp(4rem, 9vw, 7rem) 1.25rem clamp(3rem, 6vw, 4.5rem);
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  isolation: isolate;
}
/* 复古未来主义生成背景图 + 渐变压暗 */
.hero::before {
  content: "";
  position: absolute;
  inset: -12% 0 -20%;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(19, 14, 38, 0.35), rgba(19, 14, 38, 0.5) 45%, var(--bg) 96%),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=1960s%20retro-futurism%20space%20age%20poster%20background%2C%20vintage%20brass%20astronomical%20instruments%20and%20concentric%20orbital%20rings%2C%20dramatic%20sunburst%20rays%2C%20halftone%20dot%20print%20texture%2C%20warm%20amber%20cream%20and%20coral%20orange%20palette%20against%20deep%20indigo%20night%20sky%2C%20grainy%20retro%20print%2C%20wide%20panoramic%20view&image_size=landscape_16_9"),
    radial-gradient(60% 60% at 30% 20%, rgba(232, 177, 76, 0.3), transparent 70%);
  background-size: cover, cover, cover;
  background-position: center, center, center;
  animation: fadeIn 1.4s ease both;
}
/* 复古太阳射线（1950s 原子朋克符号） */
.hero-rays {
  position: absolute;
  inset: -24% -12%;
  z-index: 0;
  opacity: 0.11;
  pointer-events: none;
  background: repeating-conic-gradient(
    from 8deg,
    rgba(255, 209, 102, 0.85) 0deg 3deg,
    transparent 3deg 12deg
  );
  mask-image: radial-gradient(circle at 50% 42%, black 28%, transparent 74%);
  -webkit-mask-image: radial-gradient(circle at 50% 42%, black 28%, transparent 74%);
  animation: sunSpin 150s linear infinite;
}
@keyframes sunSpin { to { transform: rotate(360deg); } }

/* 复古虚线轨道环（环绕标题，缓缓公转） */
.hero-orbit {
  position: absolute;
  top: 46%;
  right: -4rem;
  width: min(48vw, 30rem);
  aspect-ratio: 1;
  z-index: 0;
  pointer-events: none;
  border: 1px dashed rgba(232, 177, 76, 0.32);
  border-radius: 50%;
  animation: orbitSpin 26s linear infinite;
}
.hero-orbit::before,
.hero-orbit::after {
  content: "";
  position: absolute;
  border-radius: 50%;
}
.hero-orbit::before {
  inset: 18%;
  border: 1px dotted rgba(63, 216, 197, 0.3);
}
.hero-orbit::after {
  inset: 36%;
  border: 1px solid rgba(255, 122, 89, 0.2);
}
.hero-orbit .orbit-dot {
  position: absolute;
  top: 50%;
  left: -0.4rem;
  width: 0.8rem;
  height: 0.8rem;
  margin-top: -0.4rem;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 14px rgba(63, 216, 197, 0.9);
}
.hero-orbit .orbit-dot.two {
  left: auto;
  right: 2.6rem;
  top: 14%;
  background: var(--accent-2);
  box-shadow: 0 0 14px rgba(255, 122, 89, 0.9);
}
@keyframes orbitSpin { to { transform: rotate(360deg); } }

/* 观测坐标标注（复古天文台细节） */
.hero-coord {
  position: absolute;
  left: 0.25rem;
  bottom: 1.1rem;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.28em;
  color: rgba(168, 155, 133, 0.75);
  pointer-events: none;
}
.hero-coord::before { content: "◆ "; color: var(--teal); }

.hero-inner {
  max-width: 46rem;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-retro);
  font-size: 0.66rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid rgba(255, 209, 102, 0.42);
  border-radius: 2px;
  background:
    linear-gradient(90deg, rgba(232, 177, 76, 0.12), rgba(255, 122, 89, 0.07)),
    repeating-linear-gradient(90deg, transparent 0 8px, rgba(255, 209, 102, 0.05) 8px 9px);
  padding: 0.4rem 1rem;
  margin-bottom: 1.4rem;
  box-shadow: 0 0 0 1px rgba(19, 14, 38, 0.6), 0 0 24px rgba(232, 177, 76, 0.18);
  animation: riseIn 0.7s 0.05s ease both;
}
.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 10px var(--gold);
  animation: pulseDot 2.4s ease-in-out infinite;
}
@keyframes pulseDot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1.28;
  font-weight: 400;
  letter-spacing: 0.04em;
  animation: riseIn 0.7s 0.12s ease both;
}
.hero h1 .grad {
  background: linear-gradient(92deg, var(--accent) 10%, var(--gold) 55%, var(--accent-2) 95%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p {
  margin-top: 1.2rem;
  margin-left: auto;
  margin-right: auto;
  color: #d8cbb0;
  max-width: 34rem;
  font-size: 1.06rem;
  animation: riseIn 0.7s 0.2s ease both;
}
.hero-cta {
  display: flex;
  justify-content: center;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-top: 2rem;
  animation: riseIn 0.7s 0.28s ease both;
}
.hero-scroll {
  margin: 3.2rem auto 0;
  width: 1.4rem;
  height: 2.3rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  display: flex;
  justify-content: center;
  padding-top: 0.4rem;
  animation: fadeIn 1s 0.9s ease both;
}
.hero-scroll span {
  width: 3px; height: 7px;
  border-radius: 3px;
  background: var(--accent);
  animation: scrollDrop 1.8s ease-in-out infinite;
}
@keyframes scrollDrop {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(10px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ---------- 五环浑天仪 · 背景层（任何屏幕宽度都置于主标题图层下） ---------- */
.armillary-stage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  touch-action: auto;
  opacity: 0.68;
}
.armillary-stage canvas { display: block; width: 100%; height: 100%; }
.armillary-stage.arm-failed { display: none; }

/* ---------- 卡片 ---------- */
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.2, 0.7, 0.2, 1), border-color 0.3s,
    background 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
  animation: riseIn 0.55s ease both;
}
/* 复古工程图角标（左上 / 右下 L 形刻度） */
.card::before,
.card::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  z-index: 3;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}
.card::before {
  top: 7px; left: 7px;
  border-top: 2px solid var(--accent);
  border-left: 2px solid var(--accent);
}
.card::after {
  bottom: 7px; right: 7px;
  border-bottom: 2px solid var(--accent-2);
  border-right: 2px solid var(--accent-2);
}
.card:nth-child(2) { animation-delay: 0.06s; }
.card:nth-child(3) { animation-delay: 0.12s; }
.card:nth-child(4) { animation-delay: 0.18s; }
.card:nth-child(5) { animation-delay: 0.24s; }
.card:nth-child(6) { animation-delay: 0.3s; }
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(232, 177, 76, 0.5);
  background: var(--surface-hover);
  box-shadow: 0 22px 60px -28px rgba(232, 177, 76, 0.38);
}
.card:hover::before,
.card:hover::after { opacity: 1; }
.card-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.2rem);
  font-weight: 400;
  color: rgba(255, 244, 218, 0.94);
  letter-spacing: 0.1em;
  user-select: none;
  text-shadow: 0 0 26px rgba(232, 177, 76, 0.6), 0 2px 14px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}
/* 封面光斑 */
.card-cover::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(46% 52% at 50% 46%, rgba(255, 226, 170, 0.24), transparent 70%);
  opacity: 0.85;
  transition: opacity 0.3s, transform 0.3s;
}
.card-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 22% 30%, rgba(255, 238, 200, 0.9), transparent 100%),
    radial-gradient(1px 1px at 68% 22%, rgba(255, 238, 200, 0.7), transparent 100%),
    radial-gradient(1.2px 1.2px at 82% 68%, rgba(255, 214, 140, 0.6), transparent 100%),
    radial-gradient(1px 1px at 12% 74%, rgba(63, 216, 197, 0.5), transparent 100%);
  background-repeat: repeat;
  background-size: 190px 190px, 240px 240px, 210px 210px, 260px 260px;
  opacity: 0.5;
  pointer-events: none;
  transition: opacity 0.3s;
}
.card:hover .card-cover::before { opacity: 1; transform: scale(1.06); }
.card:hover .card-cover::after { opacity: 0.85; }
.card-body { padding: 1.15rem 1.3rem 1.4rem; flex: 1; }
.card-body h3 {
  font-family: var(--font-display);
  font-size: 1.14rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  margin-bottom: 0.4rem;
  line-height: 1.5;
}
.card-body p {
  color: var(--text-dim);
  font-size: 0.92rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-meta {
  margin-top: 0.85rem;
  font-size: 0.8rem;
  color: var(--accent);
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}
.card-meta span {
  background: rgba(232, 177, 76, 0.08);
  border: 1px solid rgba(232, 177, 76, 0.18);
  border-radius: 999px;
  padding: 0.1rem 0.55rem;
}
.card-link { color: var(--accent); font-size: 0.9rem; }

/* 网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* ---------- 列表 / 详情 ---------- */
.section-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  margin: 2.2rem 0 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  animation: riseIn 0.6s ease both;
}
.section-title::before {
  content: "";
  width: 5px;
  height: 1.15em;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 12px rgba(232, 177, 76, 0.45);
}
.section-title::after {
  content: "◆";
  font-size: 0.6rem;
  color: var(--teal);
  margin-left: auto;
  font-family: var(--font-retro);
}

.prose { max-width: 46rem; font-size: 1.02rem; }
.prose p { margin-bottom: 1.05rem; color: var(--text-dim); }
.prose strong { color: var(--text); }
.prose .section-title { font-size: 1.25rem; }

/* ---------- 成员卡片 ---------- */
.member {
  flex-direction: row;
  align-items: center;
  gap: 1.1rem;
  padding: 1.2rem 1.3rem;
}
.avatar {
  width: 3.4rem;
  height: 3.4rem;
  flex-shrink: 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.3rem;
  color: #1c0f04;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 2px rgba(232, 177, 76, 0.28), 0 0 18px rgba(232, 177, 76, 0.28);
}
.member .info h3 { font-size: 1.05rem; font-family: var(--font-display); font-weight: 400; }
.member .info .role { color: var(--accent); font-size: 0.85rem; margin-top: 0.05rem; }
.member .info .bio { color: var(--text-dim); font-size: 0.85rem; margin-top: 0.15rem; }

/* ---------- 按钮（复古斜切角） ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #1c0f04;
  font-weight: 700;
  padding: 0.62rem 1.5rem;
  border-radius: 4px;
  clip-path: var(--chamfer);
  font-size: 0.95rem;
  transition: filter 0.25s, transform 0.25s, opacity 0.2s;
  filter: drop-shadow(0 6px 18px rgba(232, 177, 76, 0.32));
}
.btn:hover {
  transform: translateY(-2px);
  filter: drop-shadow(0 12px 26px rgba(232, 177, 76, 0.5));
  text-decoration: none;
  opacity: 1;
}
.btn:active { transform: translateY(0); }
.btn.ghost {
  background: rgba(232, 177, 76, 0.06);
  border: 1px solid var(--border-strong);
  color: var(--text);
  filter: none;
}
.btn.ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  filter: drop-shadow(0 10px 22px rgba(232, 177, 76, 0.35));
}

/* ---------- 空态 / 加载 ---------- */
.state {
  text-align: center;
  color: var(--text-dim);
  padding: 4.5rem 1rem;
  animation: fadeIn 0.5s ease both;
}
.spinner {
  width: 2.1rem;
  height: 2.1rem;
  margin: 0 auto 1rem;
  border: 2px solid rgba(232, 177, 76, 0.16);
  border-top-color: var(--accent);
  border-right-color: var(--accent-2);
  border-radius: 50%;
  animation: spin 0.85s linear infinite;
  box-shadow: 0 0 20px rgba(232, 177, 76, 0.2);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  border-top: 1px solid var(--border);
  padding: 2.6rem 1.25rem 3rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.88rem;
  overflow: hidden;
  animation: fadeIn 0.8s ease both;
}
.footer::before {
  content: "幻";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-size: clamp(6rem, 18vw, 12rem);
  color: rgba(232, 177, 76, 0.05);
  user-select: none;
  pointer-events: none;
}
/* 页脚轨道装饰 */
.footer::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: clamp(10rem, 30vw, 22rem);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border: 1px dashed rgba(232, 177, 76, 0.08);
  border-radius: 50%;
  pointer-events: none;
}
.footer .foot-brand {
  position: relative;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 0.45rem;
  letter-spacing: 0.08em;
}
.footer > div:last-child {
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

/* ---------- 错误页 ---------- */
.error-page {
  text-align: center;
  padding: clamp(4rem, 10vw, 7rem) 1rem;
}
.error-page .code {
  font-family: var(--font-display);
  font-size: clamp(4.5rem, 14vw, 7rem);
  font-weight: 400;
  line-height: 1;
  background: linear-gradient(92deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 30px rgba(232, 177, 76, 0.35));
  animation: riseIn 0.6s ease both;
}
.error-page p { color: var(--text-dim); margin: 1.2rem 0 2.2rem; }

/* ---------- 响应式 ---------- */

/* 标题栏折叠断点：≤1180px 一律折叠为汉堡菜单，保证标题栏恒为一行。
   原 720px 断点过低：721~1180px 间横向导航空间不足，登录按钮等被压缩换行、把标题栏撑成两行以上。 */
@media (max-width: 1180px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(19, 14, 38, 0.96);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 0.7rem 1rem 1rem;
    gap: 0.25rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.6rem 0.9rem; border-radius: 10px; }
  .nav-links a::after { display: none; }
  .nav-search { min-width: 2rem; justify-content: flex-end; }
  .nav-search input {
    width: 0;
    padding: 0.34rem 0;
    border-color: transparent;
    background: transparent;
  }
  .nav-search input::placeholder { opacity: 0; }
  .nav-search:focus-within input {
    width: 8.5rem;
    padding: 0.34rem 2rem 0.34rem 0.85rem;
    border-color: var(--border);
    background: var(--surface);
  }
  .nav-search:focus-within input::placeholder { opacity: 1; }
  .nav-search button { right: 0.05rem; }
  .nav-tools { gap: 0.35rem; }
}

@media (max-width: 720px) {
  .hero { padding: 3.2rem 0 2.6rem; }
  .hero-orbit { right: -7rem; width: 60vw; opacity: 0.7; }
  .hero-coord { display: none; }
  .container { padding: 2rem 1.1rem 3.2rem; }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ============================================
   互动扩展：认证 / 弹窗 / 详情 / 表态 / 评论
   ============================================ */

/* ---------- 卡片链接（进入详情页） ---------- */
a.card { color: inherit; text-decoration: none; }
a.card:hover { text-decoration: none; }

/* ---------- 导航认证区 ---------- */
#auth-area {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-left: 0.6rem;
  padding-left: 1rem;
  border-left: 1px solid var(--border);
}
#auth-area a[data-nav-admin] {
  color: var(--gold);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.9rem;
  transition: background 0.2s;
}
#auth-area a[data-nav-admin]:hover { background: rgba(255, 209, 102, 0.1); }
.auth-btn {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text);
  border-radius: 999px;
  padding: 0.32rem 0.95rem;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.auth-btn:hover { border-color: var(--accent); color: var(--accent); background: rgba(232, 177, 76, 0.06); }
.auth-user {
  color: var(--accent);
  font-size: 0.9rem;
  max-width: 10rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- 登录 / 注册弹窗 ---------- */
.modal-mask {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(8, 4, 20, 0.74);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeIn 0.25s ease both;
}
.modal {
  width: 100%;
  max-width: 22rem;
  background: linear-gradient(180deg, rgba(33, 25, 58, 0.98), rgba(19, 14, 38, 0.98));
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 1.7rem 1.5rem 1.5rem;
  position: relative;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(232, 177, 76, 0.1), 0 0 60px rgba(232, 177, 76, 0.08);
  animation: riseIn 0.3s ease both;
}
.modal-close {
  position: absolute;
  top: 0.75rem;
  right: 0.9rem;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.05rem;
  cursor: pointer;
  transition: color 0.2s, transform 0.2s;
}
.modal-close:hover { color: var(--text); transform: rotate(90deg); }
.modal-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.2rem;
}
.tab {
  flex: 1;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 999px;
  padding: 0.45rem 0;
  font-size: 0.92rem;
  cursor: pointer;
  transition: all 0.2s;
}
.tab.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #1c0f04;
  font-weight: 700;
  border-color: transparent;
  box-shadow: 0 6px 20px -8px rgba(232, 177, 76, 0.5);
}
.modal-form label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 0.9rem;
}
.modal-form .only-signup { color: var(--accent); font-size: 0.8rem; }
.modal-form input {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 0.58rem 0.8rem;
  color: var(--text);
  font-size: 0.95rem;
  font-family: var(--font);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.modal-form input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(232, 177, 76, 0.14);
}
.modal-form .btn { width: 100%; margin-top: 0.3rem; cursor: pointer; justify-content: center; }
.form-err { color: var(--danger); font-size: 0.85rem; margin-bottom: 0.6rem; }
.form-ok { color: var(--accent); font-size: 0.88rem; margin-bottom: 0.6rem; }
.form-note {
  margin-top: 0.9rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  text-align: center;
  line-height: 1.7;
}
.form-link {
  margin-top: 0.8rem;
  text-align: center;
  font-size: 0.85rem;
}
.form-link a { color: var(--text-dim); }
.form-link a:hover { color: var(--accent); text-decoration: underline; }
#auth-reset > p:first-child {
  margin-bottom: 0.9rem;
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.7;
}
#auth-reset .btn { margin-top: 0.4rem; }
#auth-reset .btn.ghost { margin-top: 0.55rem; }
.auth-tag {
  font-size: 0.72rem;
  color: var(--gold);
  border: 1px solid rgba(255, 209, 102, 0.4);
  border-radius: 999px;
  padding: 0.05rem 0.5rem;
  white-space: nowrap;
}
.auth-tag.rejected { color: var(--danger); border-color: rgba(255, 107, 107, 0.4); }

/* ---------- 审核页 ---------- */
.audit-count { color: var(--text-dim); margin-bottom: 1rem; }
.audit-count b { color: var(--accent); }
.audit-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.2rem;
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  transition: border-color 0.2s, background 0.2s;
  animation: riseIn 0.5s ease both;
}
.audit-item:hover { border-color: var(--border-strong); background: var(--surface-hover); }
.audit-info {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  flex-wrap: wrap;
  min-width: 0;
}
.audit-item .btn { cursor: pointer; padding: 0.45rem 1.25rem; font-size: 0.9rem; }
.audit-item .btn:disabled { opacity: 0.5; cursor: not-allowed; }
.audit-note { margin-top: 1rem; font-size: 0.85rem; color: var(--text-dim); }

/* ---------- 文章详情 ---------- */
.back-link {
  color: var(--text-dim);
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: color 0.2s, transform 0.2s;
}
.back-link:hover { color: var(--accent); text-decoration: none; transform: translateX(-3px); }
.detail-cover {
  border-radius: var(--radius);
  margin-bottom: 1.4rem;
  aspect-ratio: 21 / 9;
  animation: fadeIn 0.6s ease both;
}
.detail-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.2rem);
  font-weight: 400;
  letter-spacing: 0.03em;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}
.detail-meta {
  color: var(--text-dim);
  font-size: 0.88rem;
  margin-bottom: 1.4rem;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}
.detail-body {
  position: relative;
  background: linear-gradient(180deg, rgba(232, 177, 76, 0.06), rgba(232, 177, 76, 0.03));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.7rem;
  color: var(--text-dim);
  line-height: 2;
  font-size: 1.02rem;
}
.detail-body::before {
  content: "";
  position: absolute;
  left: 0; top: 1.2rem; bottom: 1.2rem;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  opacity: 0.8;
}

/* ---------- 表态 ---------- */
.vote-box {
  margin: 1.8rem 0;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
}
.vote-label { color: var(--text-dim); font-size: 0.9rem; }
.vote-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  padding: 0.42rem 1.05rem;
  font-size: 0.92rem;
  cursor: pointer;
  transition: all 0.2s;
}
.vote-btn:hover { border-color: var(--accent); color: var(--accent); background: rgba(232, 177, 76, 0.06); }
.vote-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #1c0f04;
  font-weight: 700;
  box-shadow: 0 6px 20px -8px rgba(232, 177, 76, 0.5);
}
.vote-reset { font-size: 0.85rem; color: var(--text-dim); }
.vote-hint { font-size: 0.82rem; color: var(--accent); }

/* ---------- 评论 ---------- */
.comments { margin-top: 2.2rem; }
.comment-form textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.75rem 0.95rem;
  color: var(--text);
  font-size: 0.95rem;
  font-family: var(--font);
  resize: vertical;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.comment-form textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232, 177, 76, 0.12); }
.comment-form textarea:disabled { opacity: 0.5; }
.c-bar { display: flex; align-items: center; gap: 1rem; margin-top: 0.7rem; }
.c-bar .btn { cursor: pointer; padding: 0.45rem 1.25rem; font-size: 0.9rem; }
.c-hint { font-size: 0.82rem; }
.comment-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.2rem;
  margin-top: 0.95rem;
  transition: border-color 0.2s;
  animation: riseIn 0.45s ease both;
}
.comment-item:hover { border-color: var(--border-strong); }
.c-head {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin-bottom: 0.45rem;
  font-size: 0.85rem;
}
.c-nick { color: var(--accent); font-weight: 600; }
.c-time { color: var(--text-dim); }
.c-edited { color: var(--text-dim); font-size: 0.78rem; }
.c-content {
  color: var(--text);
  font-size: 0.95rem;
  white-space: pre-wrap;
  word-break: break-word;
}
.edit-area {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.5rem 0.7rem;
  color: var(--text);
  font-size: 0.92rem;
  font-family: var(--font);
  margin-bottom: 0.5rem;
  outline: none;
}
.edit-area:focus { border-color: var(--accent); }
.c-actions { margin-top: 0.6rem; display: flex; gap: 1rem; }
.c-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 0.82rem;
  cursor: pointer;
  padding: 0;
  transition: color 0.2s;
}
.c-btn:hover { color: var(--accent); text-decoration: underline; }
.empty { color: var(--text-dim); font-size: 0.9rem; margin-top: 1rem; }

/* ============================================
   扩展：主题切换 / 站内搜索 / 分类筛选 / 分享
   ============================================ */

/* ---------- 导航工具区：主题按钮 + 搜索框 ---------- */
.nav-tools {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.4rem;
}
.icon-btn {
  width: 2.2rem;
  height: 2.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  font-size: 1rem;
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 0.2s, background 0.2s;
}
.icon-btn:hover { border-color: var(--accent); background: var(--surface-hover); }
.nav-search { position: relative; display: flex; align-items: center; }
.nav-search input {
  width: 9.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.34rem 2rem 0.34rem 0.85rem;
  color: var(--text);
  font-size: 0.85rem;
  font-family: var(--font);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, width 0.25s;
}
.nav-search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(232, 177, 76, 0.12);
  width: 13.5rem;
}
.nav-search button {
  position: absolute;
  right: 0.15rem;
  width: 1.9rem;
  height: 1.9rem;
  border: none;
  background: none;
  color: var(--text-dim);
  font-size: 1.05rem;
  cursor: pointer;
  border-radius: 50%;
  transition: color 0.2s;
}
.nav-search button:hover { color: var(--accent); }

/* 移动端：搜索框折叠为图标，聚焦时展开 */
@media (max-width: 720px) {
  .nav-search { min-width: 2rem; justify-content: flex-end; }
  .nav-search input {
    width: 0;
    padding: 0.34rem 0;
    border-color: transparent;
    background: transparent;
  }
  .nav-search input::placeholder { opacity: 0; }
  .nav-search:focus-within input {
    width: 8.5rem;
    padding: 0.34rem 2rem 0.34rem 0.85rem;
    border-color: var(--border);
    background: var(--surface);
  }
  .nav-search:focus-within input::placeholder { opacity: 1; }
  .nav-search button { right: 0.05rem; }
  .nav-tools { gap: 0.35rem; }
}

/* 极窄屏（≤420px）：导航压缩品牌文字，保证按钮不重叠 */
@media (max-width: 420px) {
  .nav-inner { padding: 0.7rem 0.9rem; gap: 0.5rem; }
  .brand { font-size: 1rem; gap: 0.45rem; }
  .brand > span:not(.brand-mark) { display: none; }
  .nav-tools { margin-left: 0; }
}

/* ---------- 分类 / 标签筛选 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.7rem;
  animation: fadeIn 0.5s ease both;
}
.filter-chip {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 999px;
  padding: 0.34rem 1rem;
  font-size: 0.88rem;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.filter-chip:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.filter-chip.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #1c0f04;
  font-weight: 700;
}
.filter-chip .cnt { opacity: 0.72; font-size: 0.78rem; margin-left: 0.3rem; }

/* ---------- 详情页分类 / 标签链接 ---------- */
.meta-link { color: var(--accent); }
.meta-link:hover { text-decoration: underline; }

/* ---------- 搜索结果高亮 ---------- */
mark {
  background: rgba(255, 209, 102, 0.35);
  color: inherit;
  border-radius: 3px;
  padding: 0 0.15em;
}

/* ---------- 搜索页 ---------- */
.search-form {
  display: flex;
  gap: 0.6rem;
  max-width: 36rem;
  width: 100%;
  margin: 0 0 0.4rem;
}
.search-form input {
  flex: 1;
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.62rem 1.15rem;
  color: var(--text);
  font-size: 0.95rem;
  font-family: var(--font);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.search-form input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232, 177, 76, 0.12); }
.search-stat { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 0.6rem; }
.search-group-title {
  margin: 1.7rem 0 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 400;
}
.search-group-title::before {
  content: "";
  width: 4px;
  height: 1em;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
}
.search-group-title .cnt { color: var(--text-dim); font-size: 0.8rem; font-family: var(--font-mono); }
.search-none { color: var(--text-dim); padding: 3.2rem 0; text-align: center; }

/* ---------- 竞赛页 ---------- */
.contest-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem 1.8rem;
  margin-bottom: 1.25rem;
}
.contest-head { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 0.4rem; }
.contest-head h2 { font-size: 1.35rem; font-family: var(--font-display); letter-spacing: 0.02em; }
.contest-meta { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 0.9rem; }
.contest-sec { margin-top: 1rem; }
.contest-sec h3 { font-size: 0.92rem; color: var(--accent); margin-bottom: 0.3rem; font-family: var(--font-mono); letter-spacing: 0.06em; }
.contest-sec p { color: var(--text); white-space: pre-wrap; }
.status-badge {
  display: inline-block;
  padding: 0.15rem 0.7rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: rgba(232, 177, 76, 0.1);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.status-badge.s-报名中 { background: rgba(63, 216, 197, 0.12); color: var(--teal); border-color: rgba(63, 216, 197, 0.4); }
.status-badge.s-评审中 { background: rgba(255, 209, 102, 0.12); color: var(--gold); border-color: rgba(255, 209, 102, 0.4); }
.status-badge.s-已结束 { background: rgba(168, 155, 133, 0.12); color: var(--text-dim); border-color: rgba(168, 155, 133, 0.3); }
@media (max-width: 720px) {
  .contest-card { padding: 1.2rem 1.1rem; }
}

/* ---------- 竞赛管理页 ---------- */
.c-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; flex-wrap: wrap; }
.contest-item {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1rem 1.25rem; margin-bottom: 0.75rem;
}
.contest-info { min-width: 0; }
.c-head { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.c-head b { font-size: 1.02rem; }
.c-meta { color: var(--text-dim); font-size: 0.85rem; margin-top: 0.2rem; }
.contest-form {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.4rem 1.5rem; margin-bottom: 1.25rem;
}
.c-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem; margin-bottom: 0.6rem; }
.c-grid .span2 { grid-column: span 2; }
.c-field { display: block; font-size: 0.9rem; color: var(--text-dim); margin-bottom: 0.8rem; }
.c-field input, .c-field select, .c-field textarea {
  display: block; width: 100%; margin-top: 0.35rem; padding: 0.5rem 0.7rem;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: calc(var(--radius) * 0.6);
  font: inherit; resize: vertical;
}
.c-field input:focus, .c-field select:focus, .c-field textarea:focus { outline: none; border-color: var(--accent); }
.c-actions { display: flex; gap: 0.6rem; margin-top: 0.4rem; }
@media (max-width: 720px) {
  .c-grid { grid-template-columns: 1fr; }
  .c-grid .span2 { grid-column: span 1; }
}

/* ============================================
   亮色主题 · 复古纸质（Pulp 1970s 科幻杂志）
   ============================================ */
html[data-theme="light"] {
  --bg: #f6efdf;
  --bg-soft: #efe2c9;
  --surface: rgba(178, 106, 42, 0.06);
  --surface-hover: rgba(178, 106, 42, 0.11);
  --border: rgba(178, 106, 42, 0.18);
  --border-strong: rgba(160, 90, 30, 0.34);
  --text: #2c2113;
  --text-dim: #7d6a4e;
  --accent: #c96f2a;
  --accent-2: #0e7c7b;
  --teal: #0e7c7b;
  --gold: #b8860b;
  --danger: #c0392b;
  --shadow-glow: 0 0 0 1px rgba(178, 106, 42, 0.2),
    0 18px 50px -18px rgba(178, 106, 42, 0.22);
}
html[data-theme="light"] body::before {
  background:
    /* 柔和暖色氛围 */
    radial-gradient(58rem 30rem at 88% -8%, rgba(201, 111, 42, 0.1), transparent 62%),
    radial-gradient(46rem 26rem at 6% 6%, rgba(14, 124, 123, 0.08), transparent 55%),
    radial-gradient(40rem 30rem at 50% 118%, rgba(184, 134, 11, 0.08), transparent 60%),
    /* 复古半色调网点（棕色） */
    radial-gradient(1.6px 1.6px at 22% 32%, rgba(120, 90, 40, 0.16), transparent 100%),
    radial-gradient(1.6px 1.6px at 61% 71%, rgba(120, 90, 40, 0.12), transparent 100%),
    radial-gradient(1.6px 1.6px at 84% 22%, rgba(14, 124, 123, 0.1), transparent 100%),
    radial-gradient(1.6px 1.6px at 43% 12%, rgba(120, 90, 40, 0.14), transparent 100%),
    radial-gradient(1.6px 1.6px at 8% 62%, rgba(120, 90, 40, 0.1), transparent 100%),
    radial-gradient(1.6px 1.6px at 73% 86%, rgba(201, 111, 42, 0.1), transparent 100%),
    linear-gradient(180deg, #fdf8ec, var(--bg-soft));
  background-repeat: no-repeat, no-repeat, no-repeat,
    repeat, repeat, repeat, repeat, repeat, repeat,
    no-repeat;
  background-size: auto, auto, auto,
    240px 240px, 270px 270px, 300px 300px, 260px 260px, 280px 280px, 320px 320px,
    auto;
  animation: none;
}
html[data-theme="light"] body::after { opacity: 0.05; }
html[data-theme="light"] .nav { background: rgba(246, 239, 223, 0.8); }
@media (max-width: 1180px) {
  html[data-theme="light"] .nav-links { background: rgba(246, 239, 223, 0.97); }
}
html[data-theme="light"] .hero::before {
  background:
    linear-gradient(180deg, rgba(246, 239, 223, 0.2), rgba(246, 239, 223, 0.42) 45%, var(--bg) 96%),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=1970s%20retro-futurism%20sci-fi%20magazine%20cover%20background%2C%20cream%20parchment%20paper%2C%20warm%20amber%20and%20teal%20halftone%20dots%2C%20vintage%20sunburst%20rays%2C%20brass%20compass%20rose%20and%20orbital%20line%20art%2C%20soft%20grain%2C%20warm%20orange%20teal%20and%20cream%20palette%2C%20wide%20panorama&image_size=landscape_16_9"),
    radial-gradient(60% 60% at 30% 20%, rgba(201, 111, 42, 0.16), transparent 70%);
  background-size: cover, cover, cover;
  background-position: center, center, center;
}
html[data-theme="light"] .hero-rays { opacity: 0.08; }
html[data-theme="light"] .hero-orbit { border-color: rgba(178, 106, 42, 0.3); }
html[data-theme="light"] .hero-orbit::before { border-color: rgba(14, 124, 123, 0.3); }
html[data-theme="light"] .hero-orbit::after { border-color: rgba(201, 111, 42, 0.22); }
html[data-theme="light"] .hero p { color: var(--text-dim); }
html[data-theme="light"] .armillary-stage { opacity: 0.72; }
html[data-theme="light"] .modal-mask { background: rgba(60, 45, 20, 0.5); }
html[data-theme="light"] .modal {
  background: linear-gradient(180deg, #fdf8ec, #f3ead6);
  box-shadow: 0 30px 90px rgba(60, 45, 20, 0.3);
}
html[data-theme="light"] .detail-body {
  background: linear-gradient(180deg, rgba(178, 106, 42, 0.05), rgba(178, 106, 42, 0.025));
}
html[data-theme="light"] .footer::before { color: rgba(201, 111, 42, 0.06); }
html[data-theme="light"] ::selection { background: rgba(201, 111, 42, 0.25); color: #20180a; }
html[data-theme="light"] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(201, 111, 42, 0.45), rgba(14, 124, 123, 0.45));
  border: 2px solid var(--bg);
}
html[data-theme="light"] .brand::before { border-color: var(--accent); }
html[data-theme="light"] .card:hover {
  box-shadow: 0 22px 60px -28px rgba(178, 106, 42, 0.4);
}
html[data-theme="light"] .footer::after { border-color: rgba(178, 106, 42, 0.12); }

/* ============================================
   SF 风格切换 · 导航控件（下拉选择）
   三种风格各自的科幻按钮外观：
   brass  黄铜星图 → 做旧黄铜金属质感
   neon   赛博霓虹 → 霓虹发光 + 斜切工业角
   aurora 深空极光 → 极光渐变胶囊 + 柔光描边
   ============================================ */
/* ---- brass（默认）：做旧黄铜金属 ---- */
.icon-btn,
.sf-style-select {
  background-color: transparent;
  background-image: linear-gradient(180deg, rgba(255, 236, 190, 0.94), rgba(214, 164, 82, 0.92) 48%, rgba(176, 122, 50, 0.95));
  border: 1px solid rgba(120, 78, 26, 0.9);
  border-radius: 7px;
  color: #26150a;
  text-shadow: 0 1px 0 rgba(255, 240, 205, 0.55);
  box-shadow:
    inset 0 1px 0 rgba(255, 244, 214, 0.7),
    inset 0 -2px 4px rgba(90, 55, 15, 0.4),
    0 1px 3px rgba(0, 0, 0, 0.35);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.icon-btn:hover,
.sf-style-select:hover {
  border-color: rgba(90, 58, 16, 0.95);
  box-shadow:
    inset 0 1px 0 rgba(255, 244, 214, 0.7),
    inset 0 -2px 4px rgba(90, 55, 15, 0.4),
    0 0 12px rgba(232, 177, 76, 0.6);
}
.sf-style-select {
  height: 2.2rem;
  max-width: 8.6rem;
  padding: 0 1.6rem 0 0.65rem;
  font-size: 0.82rem;
  font-family: var(--font);
  cursor: pointer;
  flex-shrink: 0;
  appearance: none;
  -webkit-appearance: none;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%235a370f' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"),
    linear-gradient(180deg, rgba(255, 236, 190, 0.94), rgba(214, 164, 82, 0.92) 48%, rgba(176, 122, 50, 0.95));
  background-repeat: no-repeat;
  background-position: right 0.5rem center, 0 0;
  background-size: 0.7rem, 100% 100%;
  outline: none;
}
.sf-style-select:focus { border-color: rgba(90, 58, 16, 0.95); }
.sf-style-select option { background: var(--bg); color: var(--text); }
/* 日/夜“切换”按钮：固定文案，容纳两个字 */
.icon-btn#theme-toggle {
  width: auto;
  min-width: 3.4rem;
  padding: 0 0.55rem;
  font-size: 0.82rem;
}

/* ---- neon：赛博霓虹 · 霓虹发光 + 斜切工业角 ---- */
html[data-style="neon"] .icon-btn,
html[data-style="neon"] .sf-style-select {
  background-color: rgba(6, 8, 15, 0.9);
  background-image: linear-gradient(180deg, rgba(0, 240, 255, 0.16), rgba(255, 225, 0, 0.05) 55%, rgba(255, 46, 99, 0.1));
  border: 1px solid rgba(255, 225, 0, 0.72);
  border-radius: 4px;
  color: #e8f6ff;
  text-shadow: 0 0 6px rgba(0, 240, 255, 0.85);
  box-shadow:
    inset 0 0 8px rgba(0, 240, 255, 0.16),
    inset 0 -2px 0 rgba(255, 46, 99, 0.35);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: border-color 0.2s, box-shadow 0.2s;
}
html[data-style="neon"] .sf-style-select {
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%23ffe100' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"),
    linear-gradient(180deg, rgba(0, 240, 255, 0.16), rgba(255, 225, 0, 0.05) 55%, rgba(255, 46, 99, 0.1));
}
html[data-style="neon"] .icon-btn:hover,
html[data-style="neon"] .sf-style-select:hover {
  border-color: rgba(0, 240, 255, 0.9);
  box-shadow:
    inset 0 0 10px rgba(0, 240, 255, 0.3),
    inset 0 -2px 0 rgba(255, 46, 99, 0.5),
    0 0 8px rgba(255, 225, 0, 0.35);
}

/* ---- aurora：深空极光 · 极光渐变胶囊 + 柔光描边 ---- */
html[data-style="aurora"] .icon-btn,
html[data-style="aurora"] .sf-style-select {
  background-color: rgba(11, 16, 34, 0.78);
  background-image: linear-gradient(135deg, rgba(110, 231, 249, 0.22), rgba(167, 139, 250, 0.14) 55%, rgba(110, 231, 249, 0.2));
  border: 1px solid rgba(110, 231, 249, 0.55);
  border-radius: 999px;
  color: #e8f6ff;
  text-shadow: 0 0 8px rgba(110, 231, 249, 0.9);
  box-shadow:
    0 0 10px rgba(110, 231, 249, 0.25),
    inset 0 0 10px rgba(167, 139, 250, 0.18);
  transition: border-color 0.2s, box-shadow 0.2s;
}
html[data-style="aurora"] .sf-style-select {
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%236ee7f9' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"),
    linear-gradient(135deg, rgba(110, 231, 249, 0.22), rgba(167, 139, 250, 0.14) 55%, rgba(110, 231, 249, 0.2));
}
html[data-style="aurora"] .icon-btn:hover,
html[data-style="aurora"] .sf-style-select:hover {
  border-color: rgba(167, 139, 250, 0.85);
  box-shadow:
    0 0 14px rgba(110, 231, 249, 0.45),
    0 0 24px rgba(167, 139, 250, 0.3),
    inset 0 0 12px rgba(110, 231, 249, 0.22);
}

@media (max-width: 720px) {
  .sf-style-select { max-width: 7rem; padding-right: 1.4rem; }
  .icon-btn#theme-toggle { min-width: 3rem; padding: 0 0.45rem; }
}

/* ============================================
   赛博霓虹 · Cyberpunk 2077 风格（深色为主）
   ============================================ */
html[data-style="neon"] {
  --bg: #06080f;
  --bg-soft: #0b1020;
  --surface: rgba(0, 240, 255, 0.05);
  --surface-hover: rgba(255, 225, 0, 0.08);
  --border: rgba(0, 240, 255, 0.16);
  --border-strong: rgba(255, 225, 0, 0.35);
  --text: #e8f6ff;
  --text-dim: #7d8da6;
  --accent: #ffe100;        /* 2077 招牌霓虹黄 */
  --accent-2: #00f0ff;      /* 霓虹青 */
  --teal: #00f0ff;
  --gold: #ffd166;
  --danger: #ff2e63;
  --shadow-glow: 0 0 0 1px rgba(0, 240, 255, 0.24),
    0 18px 50px -18px rgba(255, 225, 0, 0.32);
}
html[data-style="neon"] body::before {
  background:
    radial-gradient(50rem 28rem at 82% -10%, rgba(0, 240, 255, 0.12), transparent 60%),
    radial-gradient(42rem 24rem at 8% 6%, rgba(255, 225, 0, 0.09), transparent 55%),
    radial-gradient(60rem 34rem at 50% 118%, rgba(255, 46, 99, 0.08), transparent 60%),
    /* 冷色霓虹星点 */
    radial-gradient(1px 1px at 22% 32%, rgba(184, 214, 255, 0.8), transparent 100%),
    radial-gradient(1px 1px at 61% 71%, rgba(138, 246, 255, 0.5), transparent 100%),
    radial-gradient(1.2px 1.2px at 84% 22%, rgba(255, 225, 0, 0.5), transparent 100%),
    radial-gradient(1px 1px at 43% 12%, rgba(220, 235, 255, 0.7), transparent 100%),
    radial-gradient(1px 1px at 73% 86%, rgba(255, 46, 99, 0.35), transparent 100%),
    radial-gradient(1.2px 1.2px at 92% 55%, rgba(138, 246, 255, 0.5), transparent 100%),
    var(--bg);
  background-repeat: no-repeat, no-repeat, no-repeat,
    repeat, repeat, repeat, repeat, repeat, repeat,
    no-repeat;
  background-size: auto, auto, auto,
    260px 260px, 380px 380px, 300px 300px, 340px 340px, 320px 320px, 440px 440px,
    auto;
}
/* 霓虹扫描线 + 颗粒 */
html[data-style="neon"] body::after {
  opacity: 0.1;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E"),
    repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.22) 0 1px, transparent 1px 4px);
}
html[data-style="neon"] ::selection { background: rgba(255, 225, 0, 0.35); color: #05070c; }
html[data-style="neon"] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(255, 225, 0, 0.5), rgba(0, 240, 255, 0.5));
  border: 2px solid var(--bg);
}
html[data-style="neon"] .nav { background: rgba(6, 8, 15, 0.82); }
html[data-style="neon"] .nav::after {
  background: linear-gradient(90deg, transparent, rgba(255, 225, 0, 0.6), rgba(0, 240, 255, 0.55), rgba(255, 46, 99, 0.4), transparent);
}
html[data-style="neon"] .brand-mark {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #05070c;
  box-shadow: 0 0 18px rgba(0, 240, 255, 0.5);
}
/* 赛博城市背景图 + 底扫网格 */
html[data-style="neon"] .hero::before {
  background:
    linear-gradient(180deg, rgba(6, 8, 15, 0.4), rgba(6, 8, 15, 0.55) 45%, var(--bg) 96%),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=cyberpunk%202077%20style%20night%20megacity%20skyline%2C%20neon%20yellow%20and%20cyan%20holographic%20advertisements%2C%20dark%20chrome%20towers%2C%20rain-slicked%20streets%2C%20distant%20hovering%20vehicles%2C%20dramatic%20atmosphere%2C%20wide%20panoramic%20view&image_size=landscape_16_9"),
    radial-gradient(60% 60% at 30% 20%, rgba(255, 225, 0, 0.14), transparent 70%);
  background-size: cover, cover, cover;
  background-position: center, center, center;
}
html[data-style="neon"] .hero::after {
  content: "";
  position: absolute;
  inset: 42% 0 0 0;
  z-index: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, transparent 0 46px, rgba(255, 225, 0, 0.09) 46px 48px),
    repeating-linear-gradient(0deg, transparent 0 34px, rgba(0, 240, 255, 0.1) 34px 36px);
  mask-image: linear-gradient(180deg, transparent 0%, black 32%);
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, black 32%);
}
html[data-style="neon"] .hero-rays {
  opacity: 0.14;
  background: repeating-conic-gradient(
    from 8deg,
    rgba(0, 240, 255, 0.85) 0deg 3deg,
    transparent 3deg 12deg
  );
  animation: sunSpin 60s linear infinite;
}
html[data-style="neon"] .hero-orbit { border-color: rgba(0, 240, 255, 0.4); }
html[data-style="neon"] .hero-orbit::before { border-color: rgba(255, 225, 0, 0.35); }
html[data-style="neon"] .hero-orbit::after { border-color: rgba(255, 46, 99, 0.3); }
html[data-style="neon"] .hero-orbit .orbit-dot { background: var(--accent); box-shadow: 0 0 14px rgba(255, 225, 0, 0.9); }
html[data-style="neon"] .hero-orbit .orbit-dot.two { background: #ff2e63; box-shadow: 0 0 14px rgba(255, 46, 99, 0.9); }
html[data-style="neon"] .hero-coord { color: rgba(125, 141, 166, 0.85); }
html[data-style="neon"] .hero-coord::before { content: "▸ "; color: var(--accent); }
html[data-style="neon"] .hero h1 {
  animation: neonGlitch 5s infinite steps(1);
  text-shadow: 3px 0 0 rgba(255, 46, 99, 0.5), -3px 0 0 rgba(0, 240, 255, 0.5);
}
html[data-style="neon"] .hero h1 .grad {
  background: linear-gradient(92deg, var(--accent), var(--accent-2) 55%, #ff2e63 100%);
  -webkit-background-clip: text;
  background-clip: text;
}
html[data-style="neon"] .hero-badge {
  color: var(--accent);
  border-color: rgba(255, 225, 0, 0.55);
  background:
    linear-gradient(90deg, rgba(255, 225, 0, 0.13), rgba(0, 240, 255, 0.08)),
    repeating-linear-gradient(90deg, transparent 0 8px, rgba(0, 240, 255, 0.06) 8px 9px);
  font-family: var(--font-mono);
}
html[data-style="neon"] .badge-dot { background: var(--accent); box-shadow: 0 0 10px rgba(255, 225, 0, 0.95); }
html[data-style="neon"] .hero p { color: #b9c6d8; }
html[data-style="neon"] .section-title::after { color: var(--accent); }
html[data-style="neon"] .card-cover {
  color: rgba(236, 252, 255, 0.95);
  text-shadow: 0 0 26px rgba(0, 240, 255, 0.65), 0 2px 14px rgba(0, 0, 0, 0.55);
}
html[data-style="neon"] .card:hover { box-shadow: 0 22px 60px -28px rgba(0, 240, 255, 0.42); }
html[data-style="neon"] .card::before { border-color: var(--accent); }
html[data-style="neon"] .card::after { border-color: var(--accent-2); }
html[data-style="neon"] .btn { color: #05070c; filter: drop-shadow(0 6px 18px rgba(255, 225, 0, 0.4)); }
html[data-style="neon"] .btn.ghost {
  background: rgba(0, 240, 255, 0.06);
  color: var(--text);
}
html[data-style="neon"] .footer::before { color: rgba(0, 240, 255, 0.06); }
html[data-style="neon"] .footer::after { border-color: rgba(0, 240, 255, 0.1); }
html[data-style="neon"] .modal {
  background: linear-gradient(180deg, rgba(10, 14, 26, 0.98), rgba(6, 8, 15, 0.98));
}
html[data-style="neon"] .status-badge.s-报名中 { background: rgba(0, 240, 255, 0.12); color: var(--accent-2); border-color: rgba(0, 240, 255, 0.45); }
html[data-style="neon"] .status-badge.s-评审中 { background: rgba(255, 225, 0, 0.12); color: var(--accent); border-color: rgba(255, 225, 0, 0.45); }
html[data-style="neon"] .armillary-stage { opacity: 0.78; }

@keyframes neonGlitch {
  0%, 91.9%, 100% { transform: translate(0); filter: none; }
  92% { transform: translate(-2px, 1px); filter: hue-rotate(24deg); }
  93.4% { transform: translate(2px, -1px); }
  94.6% { transform: translate(0); filter: none; }
  96% { transform: translate(-1px, 2px); filter: hue-rotate(-18deg); }
  97.4% { transform: translate(0); filter: none; }
}

/* ============================================
   深空极光 · 原版深空风格（青紫冷调）
   ============================================ */
html[data-style="aurora"] {
  --bg: #05070f;
  --bg-soft: #0b1022;
  --surface: rgba(147, 165, 255, 0.06);
  --surface-hover: rgba(110, 231, 249, 0.1);
  --border: rgba(147, 165, 255, 0.15);
  --border-strong: rgba(165, 180, 252, 0.32);
  --text: #e9edfa;
  --text-dim: #8b95bb;
  --accent: #6ee7f9;        /* 极光青 */
  --accent-2: #a78bfa;      /* 星云紫 */
  --teal: #2dd4bf;
  --gold: #f5c877;
  --danger: #f87171;
  --shadow-glow: 0 0 0 1px rgba(110, 231, 249, 0.24),
    0 18px 50px -18px rgba(110, 231, 249, 0.32);
}
html[data-style="aurora"] body::before {
  background:
    radial-gradient(58rem 30rem at 88% -8%, rgba(167, 139, 250, 0.13), transparent 62%),
    radial-gradient(46rem 26rem at 6% 4%, rgba(110, 231, 249, 0.11), transparent 55%),
    radial-gradient(1px 1px at 22% 32%, rgba(255, 255, 255, 0.85), transparent 100%),
    radial-gradient(1.5px 1.5px at 61% 71%, rgba(255, 255, 255, 0.5), transparent 100%),
    radial-gradient(1px 1px at 84% 22%, rgba(255, 255, 255, 0.6), transparent 100%),
    radial-gradient(1px 1px at 43% 12%, rgba(255, 255, 255, 0.75), transparent 100%),
    radial-gradient(1.2px 1.2px at 73% 86%, rgba(190, 242, 255, 0.55), transparent 100%),
    radial-gradient(1.2px 1.2px at 92% 55%, rgba(214, 219, 255, 0.6), transparent 100%),
    var(--bg);
  background-repeat: no-repeat, no-repeat,
    repeat, repeat, repeat, repeat, repeat, repeat, no-repeat;
  background-size: auto, auto,
    260px 260px, 380px 380px, 300px 300px, 340px 340px, 320px 320px, 440px 440px, auto;
}
html[data-style="aurora"] ::selection { background: rgba(110, 231, 249, 0.28); color: #fff; }
html[data-style="aurora"] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(110, 231, 249, 0.45), rgba(167, 139, 250, 0.45));
  border: 2px solid var(--bg);
}
html[data-style="aurora"] .nav { background: rgba(5, 7, 15, 0.8); }
html[data-style="aurora"] .nav::after {
  background: linear-gradient(90deg, transparent, rgba(110, 231, 249, 0.5), rgba(167, 139, 250, 0.5), transparent);
}
html[data-style="aurora"] .brand-mark {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #05070f;
  box-shadow: 0 0 16px rgba(110, 231, 249, 0.42);
}
/* 原版深空背景图 */
html[data-style="aurora"] .hero::before {
  background:
    linear-gradient(180deg, rgba(5, 7, 15, 0.4), rgba(5, 7, 15, 0.55) 45%, var(--bg) 96%),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=deep%20space%20starfield%20with%20glowing%20cyan%20and%20violet%20nebula%20clouds%2C%20countless%20tiny%20bright%20stars%2C%20cinematic%20sci-fi%20atmosphere%2C%20dark%20navy%20blue%20sky%2C%20wide%20panoramic%20view&image_size=landscape_16_9"),
    radial-gradient(60% 60% at 30% 20%, rgba(110, 231, 249, 0.16), transparent 70%);
  background-size: cover, cover, cover;
  background-position: center, center, center;
}
/* 原版风格不保留太阳射线 / 轨道装饰 / 坐标（还原精简深空） */
html[data-style="aurora"] .hero-rays,
html[data-style="aurora"] .hero-orbit,
html[data-style="aurora"] .hero-coord { display: none; }
html[data-style="aurora"] .hero-badge {
  border-radius: 999px;
  border-color: rgba(110, 231, 249, 0.4);
  color: var(--teal);
  background: rgba(110, 231, 249, 0.08);
  font-family: var(--font-mono);
}
html[data-style="aurora"] .badge-dot { background: var(--teal); box-shadow: 0 0 10px rgba(45, 212, 191, 0.95); }
html[data-style="aurora"] .hero p { color: #c3cbe2; }
html[data-style="aurora"] .section-title::after { color: var(--accent-2); }
html[data-style="aurora"] .btn {
  clip-path: none;
  border-radius: 999px;
  color: #05070f;
  filter: drop-shadow(0 6px 18px rgba(110, 231, 249, 0.35));
}
html[data-style="aurora"] .card:hover { box-shadow: 0 22px 60px -28px rgba(110, 231, 249, 0.4); }
html[data-style="aurora"] .card::before { border-color: var(--accent); }
html[data-style="aurora"] .card::after { border-color: var(--accent-2); }
html[data-style="aurora"] .card-cover {
  color: rgba(233, 237, 250, 0.95);
  text-shadow: 0 0 26px rgba(110, 231, 249, 0.55), 0 2px 14px rgba(0, 0, 0, 0.5);
}
html[data-style="aurora"] .footer::before { color: rgba(110, 231, 249, 0.06); }
html[data-style="aurora"] .footer::after { border-color: rgba(110, 231, 249, 0.09); }
html[data-style="aurora"] .modal {
  background: linear-gradient(180deg, rgba(11, 16, 34, 0.98), rgba(5, 7, 15, 0.98));
}
html[data-style="aurora"] .armillary-stage { opacity: 0.5; }

/* ============================================
   日 / 夜切换：赛博霓虹 · 日间（白昼城市风）
   ============================================ */
html[data-style="neon"][data-theme="light"] {
  --bg: #eef2f7;
  --bg-soft: #dfe7f0;
  --surface: rgba(0, 80, 140, 0.06);
  --surface-hover: rgba(201, 138, 0, 0.1);
  --border: rgba(0, 80, 140, 0.16);
  --border-strong: rgba(201, 138, 0, 0.38);
  --text: #141b26;
  --text-dim: #5c6b80;
  --accent: #c98a00;        /* 白昼黄 */
  --accent-2: #00899e;      /* 白昼青 */
  --teal: #007c8f;
  --gold: #b8860b;
  --danger: #c2364f;
  --shadow-glow: 0 0 0 1px rgba(0, 137, 158, 0.2),
    0 18px 50px -18px rgba(201, 138, 0, 0.24);
}
html[data-style="neon"][data-theme="light"] body::before {
  background:
    radial-gradient(50rem 28rem at 82% -10%, rgba(0, 137, 158, 0.09), transparent 60%),
    radial-gradient(42rem 24rem at 8% 6%, rgba(201, 138, 0, 0.08), transparent 55%),
    radial-gradient(1.6px 1.6px at 22% 32%, rgba(90, 110, 140, 0.14), transparent 100%),
    radial-gradient(1.6px 1.6px at 61% 71%, rgba(0, 137, 158, 0.1), transparent 100%),
    radial-gradient(1.6px 1.6px at 84% 22%, rgba(201, 138, 0, 0.1), transparent 100%),
    linear-gradient(180deg, #f6f9fc, var(--bg-soft));
  background-repeat: no-repeat, no-repeat,
    repeat, repeat, repeat,
    no-repeat;
  background-size: auto, auto,
    240px 240px, 280px 280px, 300px 300px,
    auto;
  animation: none;
}
html[data-style="neon"][data-theme="light"] body::after { opacity: 0.04; }
html[data-style="neon"][data-theme="light"] ::selection { background: rgba(201, 138, 0, 0.28); color: #141b26; }
html[data-style="neon"][data-theme="light"] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(201, 138, 0, 0.45), rgba(0, 137, 158, 0.45));
  border: 2px solid var(--bg);
}
html[data-style="neon"][data-theme="light"] .nav { background: rgba(238, 242, 247, 0.82); }
@media (max-width: 1180px) {
  html[data-style="neon"][data-theme="light"] .nav-links { background: rgba(238, 242, 247, 0.97); }
}
/* 白昼赛博城市背景图 + 底扫网格 */
html[data-style="neon"][data-theme="light"] .hero::before {
  background:
    linear-gradient(180deg, rgba(238, 242, 247, 0.24), rgba(238, 242, 247, 0.46) 45%, var(--bg) 96%),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=cyberpunk%20megacity%20in%20broad%20daylight%2C%20pale%20overcast%20sky%2C%20futuristic%20towers%20with%20yellow%20signage%20and%20teal%20glass%2C%20morning%20haze%2C%20clean%20bright%20light%2C%20wide%20panoramic%20view&image_size=landscape_16_9"),
    radial-gradient(60% 60% at 30% 20%, rgba(201, 138, 0, 0.1), transparent 70%);
  background-size: cover, cover, cover;
  background-position: center, center, center;
}
html[data-style="neon"][data-theme="light"] .hero::after {
  background:
    repeating-linear-gradient(90deg, transparent 0 46px, rgba(201, 138, 0, 0.07) 46px 48px),
    repeating-linear-gradient(0deg, transparent 0 34px, rgba(0, 137, 158, 0.08) 34px 36px);
}
html[data-style="neon"][data-theme="light"] .hero h1 { animation: none; text-shadow: none; }
html[data-style="neon"][data-theme="light"] .hero p { color: var(--text-dim); }
html[data-style="neon"][data-theme="light"] .hero-rays { opacity: 0.07; }
html[data-style="neon"][data-theme="light"] .hero-orbit { border-color: rgba(0, 137, 158, 0.3); }
html[data-style="neon"][data-theme="light"] .hero-orbit::before { border-color: rgba(201, 138, 0, 0.28); }
html[data-style="neon"][data-theme="light"] .hero-orbit::after { border-color: rgba(194, 54, 79, 0.24); }
html[data-style="neon"][data-theme="light"] .hero-orbit .orbit-dot { background: var(--accent); box-shadow: 0 0 12px rgba(201, 138, 0, 0.8); }
html[data-style="neon"][data-theme="light"] .hero-orbit .orbit-dot.two { background: var(--danger); box-shadow: 0 0 12px rgba(194, 54, 79, 0.8); }
html[data-style="neon"][data-theme="light"] .hero-coord { color: var(--text-dim); }
html[data-style="neon"][data-theme="light"] .hero-coord::before { content: "▸ "; color: var(--accent); }
html[data-style="neon"][data-theme="light"] .hero-badge {
  color: var(--accent);
  border-color: rgba(201, 138, 0, 0.5);
  background:
    linear-gradient(90deg, rgba(201, 138, 0, 0.12), rgba(0, 137, 158, 0.07)),
    repeating-linear-gradient(90deg, transparent 0 8px, rgba(0, 137, 158, 0.05) 8px 9px);
}
html[data-style="neon"][data-theme="light"] .badge-dot { background: var(--accent); box-shadow: 0 0 10px rgba(201, 138, 0, 0.85); }
html[data-style="neon"][data-theme="light"] .footer::before { color: rgba(0, 137, 158, 0.05); }
html[data-style="neon"][data-theme="light"] .footer::after { border-color: rgba(0, 137, 158, 0.09); }
html[data-style="neon"][data-theme="light"] .modal {
  background: linear-gradient(180deg, #f6f9fc, #e8eef5);
  box-shadow: 0 30px 90px rgba(20, 27, 38, 0.24);
}
html[data-style="neon"][data-theme="light"] .armillary-stage { opacity: 0.5; }

/* ============================================
   日 / 夜切换：深空极光 · 日间（极昼冰蓝风）
   ============================================ */
html[data-style="aurora"][data-theme="light"] {
  --bg: #eef3fb;
  --bg-soft: #e0e9f6;
  --surface: rgba(60, 110, 200, 0.06);
  --surface-hover: rgba(60, 110, 200, 0.1);
  --border: rgba(60, 110, 200, 0.16);
  --border-strong: rgba(80, 130, 220, 0.32);
  --text: #10182b;
  --text-dim: #5a6b8f;
  --accent: #0e7490;        /* 极昼青 */
  --accent-2: #6d5bd0;      /* 极昼紫 */
  --teal: #0d9488;
  --gold: #b8860b;
  --danger: #c0392b;
  --shadow-glow: 0 0 0 1px rgba(14, 116, 144, 0.18),
    0 18px 50px -18px rgba(14, 116, 144, 0.22);
}
html[data-style="aurora"][data-theme="light"] body::before {
  background:
    radial-gradient(58rem 30rem at 88% -8%, rgba(109, 91, 208, 0.08), transparent 62%),
    radial-gradient(46rem 26rem at 6% 4%, rgba(14, 116, 144, 0.08), transparent 55%),
    radial-gradient(1.6px 1.6px at 22% 32%, rgba(90, 110, 160, 0.14), transparent 100%),
    radial-gradient(1.6px 1.6px at 61% 71%, rgba(90, 110, 160, 0.1), transparent 100%),
    radial-gradient(1.6px 1.6px at 84% 22%, rgba(14, 116, 144, 0.09), transparent 100%),
    linear-gradient(180deg, #f8fafd, var(--bg-soft));
  background-repeat: no-repeat, no-repeat,
    repeat, repeat, repeat,
    no-repeat;
  background-size: auto, auto,
    240px 240px, 280px 280px, 300px 300px,
    auto;
  animation: none;
}
html[data-style="aurora"][data-theme="light"] ::selection { background: rgba(14, 116, 144, 0.26); color: #10182b; }
html[data-style="aurora"][data-theme="light"] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(14, 116, 144, 0.45), rgba(109, 91, 208, 0.45));
  border: 2px solid var(--bg);
}
html[data-style="aurora"][data-theme="light"] .nav { background: rgba(238, 243, 251, 0.82); }
@media (max-width: 1180px) {
  html[data-style="aurora"][data-theme="light"] .nav-links { background: rgba(238, 243, 251, 0.97); }
}
/* 极昼背景图：冰蓝天空 + 淡色极光 */
html[data-style="aurora"][data-theme="light"] .hero::before {
  background:
    linear-gradient(180deg, rgba(238, 243, 251, 0.24), rgba(238, 243, 251, 0.46) 45%, var(--bg) 96%),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=polar%20day%2C%20pale%20ice%20blue%20arctic%20sky%20with%20faint%20cyan%20and%20violet%20aurora%20wisps%20over%20snow%20mountains%2C%20soft%20diffuse%20daylight%2C%20clean%20minimal%2C%20wide%20panoramic%20view&image_size=landscape_16_9"),
    radial-gradient(60% 60% at 30% 20%, rgba(14, 116, 144, 0.1), transparent 70%);
  background-size: cover, cover, cover;
  background-position: center, center, center;
}
html[data-style="aurora"][data-theme="light"] .hero-rays,
html[data-style="aurora"][data-theme="light"] .hero-orbit,
html[data-style="aurora"][data-theme="light"] .hero-coord { display: none; }
html[data-style="aurora"][data-theme="light"] .hero-badge {
  border-radius: 999px;
  border-color: rgba(14, 116, 144, 0.38);
  color: var(--teal);
  background: rgba(14, 116, 144, 0.08);
}
html[data-style="aurora"][data-theme="light"] .badge-dot { background: var(--teal); box-shadow: 0 0 10px rgba(13, 148, 136, 0.85); }
html[data-style="aurora"][data-theme="light"] .hero p { color: var(--text-dim); }
html[data-style="aurora"][data-theme="light"] .footer::before { color: rgba(14, 116, 144, 0.05); }
html[data-style="aurora"][data-theme="light"] .footer::after { border-color: rgba(14, 116, 144, 0.08); }
html[data-style="aurora"][data-theme="light"] .modal {
  background: linear-gradient(180deg, #f8fafd, #e8eef6);
  box-shadow: 0 30px 90px rgba(16, 24, 43, 0.24);
}
html[data-style="aurora"][data-theme="light"] .armillary-stage { opacity: 0.7; }

/* ============================================
   复古计算 · CRT 终端绿磷光（焦黑夜 / 米黄日）
   ============================================ */
html[data-style="retro"] {
  --bg: #0c0c0a;            /* 焦黑 */
  --bg-soft: #131310;
  --surface: rgba(60, 255, 110, 0.06);
  --surface-hover: rgba(60, 255, 110, 0.12);
  --border: rgba(60, 255, 110, 0.22);
  --border-strong: rgba(255, 176, 0, 0.4);
  --text: #d7ffe3;
  --text-dim: #6f9c7c;
  --accent: #3cff6e;        /* 磷光绿 */
  --accent-2: #ffb000;      /* 琥珀 */
  --teal: #3cff6e;
  --gold: #ffd166;
  --danger: #ff5c5c;
  --shadow-glow: 0 0 0 1px rgba(60, 255, 110, 0.28),
    0 18px 50px -18px rgba(60, 255, 110, 0.3);
}
html[data-style="retro"] body::before {
  background:
    radial-gradient(50rem 28rem at 82% -10%, rgba(60, 255, 110, 0.09), transparent 60%),
    radial-gradient(42rem 24rem at 8% 6%, rgba(255, 176, 0, 0.06), transparent 55%),
    /* 磷光字符网格点 */
    radial-gradient(1.6px 1.6px at 22% 32%, rgba(183, 255, 201, 0.5), transparent 100%),
    radial-gradient(1.6px 1.6px at 61% 71%, rgba(60, 255, 110, 0.4), transparent 100%),
    radial-gradient(1.6px 1.6px at 84% 22%, rgba(255, 176, 0, 0.35), transparent 100%),
    radial-gradient(1.6px 1.6px at 43% 12%, rgba(183, 255, 201, 0.45), transparent 100%),
    radial-gradient(1.6px 1.6px at 8% 62%, rgba(60, 255, 110, 0.35), transparent 100%),
    radial-gradient(1.6px 1.6px at 73% 86%, rgba(255, 176, 0, 0.3), transparent 100%),
    linear-gradient(180deg, #101210, var(--bg));
  background-repeat: no-repeat, no-repeat,
    repeat, repeat, repeat, repeat, repeat, repeat,
    no-repeat;
  background-size: auto, auto,
    240px 240px, 280px 280px, 300px 300px, 260px 260px, 320px 320px, 340px 340px,
    auto;
}
/* CRT 扫描线 + 轻微噪点 */
html[data-style="retro"] body::after {
  opacity: 0.14;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E"),
    repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.35) 0 1px, transparent 1px 3px);
}
html[data-style="retro"] ::selection { background: rgba(60, 255, 110, 0.3); color: #040a05; }
html[data-style="retro"] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(60, 255, 110, 0.5), rgba(255, 176, 0, 0.45));
  border: 2px solid var(--bg);
}
html[data-style="retro"] .nav { background: rgba(12, 12, 10, 0.85); }
html[data-style="retro"] .nav::after {
  background: linear-gradient(90deg, transparent, rgba(60, 255, 110, 0.7), rgba(255, 176, 0, 0.55), transparent);
}
html[data-style="retro"] .brand-mark {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #040a05;
  box-shadow: 0 0 16px rgba(60, 255, 110, 0.5);
}
/* CRT 绿屏背景图 + 点阵底扫 */
html[data-style="retro"] .hero::before {
  background:
    linear-gradient(180deg, rgba(12, 12, 10, 0.35), rgba(12, 12, 10, 0.5) 45%, var(--bg) 96%),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=vintage%20CRT%20computer%20terminal%20screen%2C%20glowing%20green%20phosphor%20character%20matrix%2C%20ASCII%20star%20map%20and%20orbital%20charts%20made%20of%20text%20glyphs%2C%20visible%20scanlines%20and%20dotted%20grid%2C%20amber%20cursor%20block%2C%20monochrome%20green%20display%20on%20deep%20black%20screen%2C%20wide%20panoramic%20view&image_size=landscape_16_9"),
    radial-gradient(60% 60% at 30% 20%, rgba(60, 255, 110, 0.14), transparent 70%);
  background-size: cover, cover, cover;
  background-position: center, center, center;
}
/* 终端点阵底扫网格 */
html[data-style="retro"] .hero::after {
  content: "";
  position: absolute;
  inset: 38% 0 0 0;
  z-index: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, transparent 0 40px, rgba(60, 255, 110, 0.07) 40px 42px),
    repeating-linear-gradient(0deg, transparent 0 30px, rgba(255, 176, 0, 0.06) 30px 32px);
  mask-image: linear-gradient(180deg, transparent 0%, black 30%);
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, black 30%);
}
html[data-style="retro"] .hero-rays {
  opacity: 0.06;
  background: repeating-conic-gradient(
    from 8deg,
    rgba(60, 255, 110, 0.8) 0deg 3deg,
    transparent 3deg 12deg
  );
}
html[data-style="retro"] .hero-orbit { border-color: rgba(60, 255, 110, 0.4); border-style: dotted; }
html[data-style="retro"] .hero-orbit::before { border-color: rgba(183, 255, 201, 0.35); }
html[data-style="retro"] .hero-orbit::after { border-color: rgba(255, 176, 0, 0.32); }
html[data-style="retro"] .hero-orbit .orbit-dot { background: var(--accent); box-shadow: 0 0 14px rgba(60, 255, 110, 0.95); }
html[data-style="retro"] .hero-orbit .orbit-dot.two { background: #ffb000; box-shadow: 0 0 14px rgba(255, 176, 0, 0.95); }
html[data-style="retro"] .hero-coord { color: rgba(111, 156, 124, 0.9); font-family: var(--font-mono); }
html[data-style="retro"] .hero-coord::before { content: "> "; color: var(--accent); }
/* 标题：等宽终端大字 + 磷光辉光 */
html[data-style="retro"] .hero h1 {
  font-family: var(--font-mono);
  font-weight: 400;
  text-shadow: 0 0 10px rgba(60, 255, 110, 0.8), 0 0 32px rgba(60, 255, 110, 0.4);
}
html[data-style="retro"] .hero h1 .grad {
  background: linear-gradient(92deg, var(--accent), #7dffa3 55%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
}
html[data-style="retro"] .hero-badge {
  color: var(--accent);
  border-color: rgba(60, 255, 110, 0.5);
  background:
    linear-gradient(90deg, rgba(60, 255, 110, 0.1), rgba(255, 176, 0, 0.06)),
    repeating-linear-gradient(90deg, transparent 0 8px, rgba(60, 255, 110, 0.05) 8px 9px);
  font-family: var(--font-mono);
}
html[data-style="retro"] .badge-dot { background: var(--accent); box-shadow: 0 0 10px rgba(60, 255, 110, 0.95); }
html[data-style="retro"] .hero p { color: #a9d8b4; font-family: var(--font-mono); }
html[data-style="retro"] .section-title::after { color: var(--accent); }
html[data-style="retro"] .card-cover {
  color: rgba(220, 255, 230, 0.95);
  text-shadow: 0 0 26px rgba(60, 255, 110, 0.6), 0 2px 14px rgba(0, 0, 0, 0.5);
}
html[data-style="retro"] .card:hover { box-shadow: 0 22px 60px -28px rgba(60, 255, 110, 0.42); }
html[data-style="retro"] .card::before { border-color: var(--accent); }
html[data-style="retro"] .card::after { border-color: var(--accent-2); }
html[data-style="retro"] .btn { color: #040a05; filter: drop-shadow(0 6px 18px rgba(60, 255, 110, 0.45)); }
html[data-style="retro"] .btn.ghost {
  background: rgba(60, 255, 110, 0.06);
  color: var(--text);
}
html[data-style="retro"] .footer::before { color: rgba(60, 255, 110, 0.06); }
html[data-style="retro"] .footer::after { border-color: rgba(60, 255, 110, 0.1); }
html[data-style="retro"] .modal {
  background: linear-gradient(180deg, rgba(15, 18, 15, 0.98), rgba(12, 12, 10, 0.98));
}
html[data-style="retro"] .status-badge.s-报名中 { background: rgba(60, 255, 110, 0.12); color: var(--accent); border-color: rgba(60, 255, 110, 0.45); }
html[data-style="retro"] .status-badge.s-评审中 { background: rgba(255, 176, 0, 0.12); color: var(--accent-2); border-color: rgba(255, 176, 0, 0.45); }
html[data-style="retro"] .armillary-stage { opacity: 0.8; }

/* ---- retro 按钮：CRT 终端方块 · 荧光绿描边 ---- */
html[data-style="retro"] .icon-btn,
html[data-style="retro"] .sf-style-select {
  background-color: rgba(12, 12, 10, 0.9);
  background-image: linear-gradient(180deg, rgba(60, 255, 110, 0.1), rgba(12, 12, 10, 0.2));
  border: 1px solid rgba(60, 255, 110, 0.65);
  border-radius: 2px;
  color: #d7ffe3;
  font-family: var(--font-mono);
  text-shadow: 0 0 6px rgba(60, 255, 110, 0.85);
  box-shadow:
    inset 0 0 8px rgba(60, 255, 110, 0.14),
    0 0 4px rgba(60, 255, 110, 0.3);
  transition: border-color 0.2s, box-shadow 0.2s;
}
html[data-style="retro"] .sf-style-select {
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%233cff6e' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"),
    linear-gradient(180deg, rgba(60, 255, 110, 0.1), rgba(12, 12, 10, 0.2));
}
html[data-style="retro"] .icon-btn:hover,
html[data-style="retro"] .sf-style-select:hover {
  border-color: rgba(183, 255, 201, 0.95);
  box-shadow:
    inset 0 0 10px rgba(60, 255, 110, 0.3),
    0 0 10px rgba(60, 255, 110, 0.55);
}

/* ============================================
   复古计算 · 日间（米黄纸面 / 打印输出）
   ============================================ */
html[data-style="retro"][data-theme="light"] {
  --bg: #f5ecd8;            /* 米黄 */
  --bg-soft: #ecdfc2;
  --surface: rgba(29, 122, 63, 0.07);
  --surface-hover: rgba(160, 110, 20, 0.1);
  --border: rgba(29, 122, 63, 0.2);
  --border-strong: rgba(160, 110, 20, 0.38);
  --text: #2b3a20;
  --text-dim: #7c7a5c;
  --accent: #1d7a3f;        /* 墨绿 */
  --accent-2: #b8860b;      /* 琥珀 */
  --teal: #1d7a3f;
  --gold: #a07012;
  --danger: #b03a2e;
  --shadow-glow: 0 0 0 1px rgba(29, 122, 63, 0.22),
    0 18px 50px -18px rgba(160, 110, 20, 0.24);
}
html[data-style="retro"][data-theme="light"] body::before {
  background:
    radial-gradient(50rem 28rem at 82% -10%, rgba(29, 122, 63, 0.08), transparent 60%),
    radial-gradient(42rem 24rem at 8% 6%, rgba(160, 110, 20, 0.07), transparent 55%),
    /* 打印网点 */
    radial-gradient(1.6px 1.6px at 22% 32%, rgba(60, 110, 70, 0.14), transparent 100%),
    radial-gradient(1.6px 1.6px at 61% 71%, rgba(29, 122, 63, 0.1), transparent 100%),
    radial-gradient(1.6px 1.6px at 84% 22%, rgba(160, 110, 20, 0.1), transparent 100%),
    linear-gradient(180deg, #fbf4e2, var(--bg-soft));
  background-repeat: no-repeat, no-repeat,
    repeat, repeat, repeat,
    no-repeat;
  background-size: auto, auto,
    240px 240px, 280px 280px, 300px 300px,
    auto;
  animation: none;
}
html[data-style="retro"][data-theme="light"] body::after { opacity: 0.04; }
html[data-style="retro"][data-theme="light"] ::selection { background: rgba(29, 122, 63, 0.26); color: #1c1a10; }
html[data-style="retro"][data-theme="light"] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(29, 122, 63, 0.45), rgba(160, 110, 20, 0.45));
  border: 2px solid var(--bg);
}
html[data-style="retro"][data-theme="light"] .nav { background: rgba(245, 236, 216, 0.85); }
html[data-style="retro"][data-theme="light"] .nav::after {
  background: linear-gradient(90deg, transparent, rgba(29, 122, 63, 0.55), rgba(160, 110, 20, 0.45), transparent);
}
html[data-style="retro"][data-theme="light"] .brand-mark {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fbf4e2;
  box-shadow: 0 0 12px rgba(29, 122, 63, 0.35);
}
/* 日间打印输出背景图（米黄纸 + 绿色打印字符） */
html[data-style="retro"][data-theme="light"] .hero::before {
  background:
    linear-gradient(180deg, rgba(245, 236, 216, 0.24), rgba(245, 236, 216, 0.46) 45%, var(--bg) 96%),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=retro%20dot%20matrix%20printer%20paper%2C%20green%20monochrome%20printout%20on%20cream%20beige%20paper%2C%20ASCII%20star%20chart%20and%20orbital%20diagrams%2C%20dotted%20grid%20texture%2C%20vintage%20terminal%20printout%2C%20warm%20beige%20background%2C%20wide%20panoramic%20view&image_size=landscape_16_9"),
    radial-gradient(60% 60% at 30% 20%, rgba(29, 122, 63, 0.08), transparent 70%);
  background-size: cover, cover, cover;
  background-position: center, center, center;
}
html[data-style="retro"][data-theme="light"] .hero::after {
  background:
    repeating-linear-gradient(90deg, transparent 0 40px, rgba(29, 122, 63, 0.05) 40px 42px),
    repeating-linear-gradient(0deg, transparent 0 30px, rgba(160, 110, 20, 0.04) 30px 32px);
}
html[data-style="retro"][data-theme="light"] .hero h1 { animation: none; text-shadow: none; }
html[data-style="retro"][data-theme="light"] .hero h1 .grad {
  background: linear-gradient(92deg, var(--accent), #4a9a5f 55%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
}
html[data-style="retro"][data-theme="light"] .hero p { color: var(--text-dim); }
html[data-style="retro"][data-theme="light"] .hero-rays { opacity: 0.05; }
html[data-style="retro"][data-theme="light"] .hero-orbit { border-color: rgba(29, 122, 63, 0.3); }
html[data-style="retro"][data-theme="light"] .hero-orbit::before { border-color: rgba(29, 122, 63, 0.25); }
html[data-style="retro"][data-theme="light"] .hero-orbit::after { border-color: rgba(160, 110, 20, 0.24); }
html[data-style="retro"][data-theme="light"] .hero-orbit .orbit-dot { background: var(--accent); box-shadow: 0 0 10px rgba(29, 122, 63, 0.7); }
html[data-style="retro"][data-theme="light"] .hero-orbit .orbit-dot.two { background: var(--accent-2); box-shadow: 0 0 10px rgba(160, 110, 20, 0.7); }
html[data-style="retro"][data-theme="light"] .hero-coord { color: var(--text-dim); }
html[data-style="retro"][data-theme="light"] .hero-coord::before { content: "> "; color: var(--accent); }
html[data-style="retro"][data-theme="light"] .hero-badge {
  color: var(--accent);
  border-color: rgba(29, 122, 63, 0.42);
  background: linear-gradient(90deg, rgba(29, 122, 63, 0.08), rgba(160, 110, 20, 0.05));
}
html[data-style="retro"][data-theme="light"] .badge-dot { background: var(--accent); box-shadow: 0 0 10px rgba(29, 122, 63, 0.85); }
html[data-style="retro"][data-theme="light"] .footer::before { color: rgba(29, 122, 63, 0.05); }
html[data-style="retro"][data-theme="light"] .footer::after { border-color: rgba(29, 122, 63, 0.09); }
html[data-style="retro"][data-theme="light"] .modal {
  background: linear-gradient(180deg, #fbf4e2, #ece0c2);
  box-shadow: 0 30px 90px rgba(60, 45, 20, 0.28);
}
html[data-style="retro"][data-theme="light"] .armillary-stage { opacity: 0.72; }

/* ---- retro 按钮 · 日间：米黄底 + 墨绿描边 ---- */
html[data-style="retro"][data-theme="light"] .icon-btn,
html[data-style="retro"][data-theme="light"] .sf-style-select {
  background-color: rgba(245, 236, 216, 0.9);
  background-image: linear-gradient(180deg, rgba(29, 122, 63, 0.08), rgba(160, 110, 20, 0.06));
  border: 1px solid rgba(29, 122, 63, 0.55);
  color: #2b3a20;
  text-shadow: none;
  box-shadow: inset 0 1px 0 rgba(255, 250, 235, 0.8);
}
html[data-style="retro"][data-theme="light"] .sf-style-select {
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%231d7a3f' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"),
    linear-gradient(180deg, rgba(29, 122, 63, 0.08), rgba(160, 110, 20, 0.06));
}
html[data-style="retro"][data-theme="light"] .icon-btn:hover,
html[data-style="retro"][data-theme="light"] .sf-style-select:hover {
  border-color: rgba(29, 122, 63, 0.85);
  box-shadow: inset 0 1px 0 rgba(255, 250, 235, 0.8), 0 0 8px rgba(29, 122, 63, 0.3);
}
@media (max-width: 720px) {
  html[data-style="retro"] .sf-style-select { max-width: 7rem; }
  html[data-style="retro"][data-theme="light"] .sf-style-select { max-width: 7rem; }
}

/* ============================================
   投稿审核页
   ============================================ */
.submit-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  margin-bottom: 0.85rem;
}
.submit-cover {
  flex: 0 0 4.6rem;
  height: 4.6rem;
  border-radius: calc(var(--radius) * 0.6);
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 0 18px rgba(0, 0, 0, 0.55);
  overflow: hidden;
}
.submit-body { flex: 1; min-width: 0; }
.submit-head { display: flex; align-items: baseline; gap: 0.6rem; flex-wrap: wrap; }
.submit-title { font-size: 1.05rem; }
.submit-meta { display: flex; gap: 0.4rem; flex-wrap: wrap; margin: 0.4rem 0; }
.tag-chip {
  display: inline-block;
  padding: 0.12rem 0.6rem;
  border-radius: 999px;
  font-size: 0.78rem;
  background: rgba(232, 177, 76, 0.1);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.tag-chip.contest { background: rgba(63, 216, 197, 0.12); color: var(--teal); border-color: rgba(63, 216, 197, 0.4); }
.submit-body-text {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.65;
  white-space: normal;
}
@media (max-width: 720px) {
  .submit-item { flex-wrap: wrap; }
  .submit-cover { flex: 0 0 100%; height: 6.5rem; }
  .submit-item .c-actions { width: 100%; }
}