/* ========================================
   杨盘就是🐏 - 高级简约主题样式
   支持明暗模式切换
   ======================================== */

/* CSS变量定义 */
:root {
  /* 亮色模式配色 */
  --bg-primary: #f5f5f7;
  --bg-secondary: #ffffff;
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;
  --card-bg: rgba(255, 255, 255, 0.7);
  --card-border: rgba(0, 0, 0, 0.06);
  --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --card-shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.12);
  --button-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --button-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
  --status-online: #34c759;
  --status-offline: #ff3b30;
  --backdrop-blur: blur(20px);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius: 16px;
  --border-radius-sm: 12px;
}

/* 暗色模式配色 */
[data-theme="dark"] {
  --bg-primary: #0d0d0d;
  --bg-secondary: #1c1c1e;
  --text-primary: #ffffff;
  --text-secondary: #a1a1a6;
  --text-tertiary: #6e6e73;
  --card-bg: rgba(28, 28, 30, 0.8);
  --card-border: rgba(255, 255, 255, 0.1);
  --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 12px 48px rgba(102, 126, 234, 0.2);
  --button-shadow: 0 4px 16px rgba(102, 126, 234, 0.4);
}

/* 全局重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
}

/* 背景装饰 */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 20% 80%, rgba(102, 126, 234, 0.05) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(118, 75, 162, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 头部导航 */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  position: relative;
}

.logo {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: var(--button-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--card-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--card-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: all var(--transition-fast);
  box-shadow: var(--card-shadow);
}

.theme-toggle:hover {
  transform: scale(1.05);
  box-shadow: var(--card-shadow-hover);
}

.theme-toggle:active {
  transform: scale(0.95);
}

/* 主标题区域 */
.hero {
  text-align: center;
  padding: 60px 0 40px;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  background: var(--button-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 3vw, 1.25rem);
  color: var(--text-secondary);
  font-weight: 400;
}

/* 卡片网格 */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: 20px 0 60px;
  flex: 1;
}

@media (min-width: 768px) {
  .cards-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    padding: 40px 0 80px;
  }
}

/* 卡片样式 */
.card {
  background: var(--card-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius);
  padding: 32px 28px;
  box-shadow: var(--card-shadow);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--button-gradient);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  display: block;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.card-description {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  flex: 1;
  line-height: 1.7;
}

.card-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-bottom: 20px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--status-offline);
  animation: pulse 2s infinite;
}

.status-dot.online {
  background: var(--status-online);
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  background: var(--button-gradient);
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--button-shadow);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(102, 126, 234, 0.4);
}

.btn:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--card-border);
  box-shadow: none;
}

.btn-secondary:hover {
  background: var(--card-bg);
  border-color: var(--text-secondary);
  box-shadow: var(--card-shadow);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.875rem;
}

.btn-icon {
  font-size: 1.2em;
}

/* 页脚 */
.footer {
  text-align: center;
  padding: 32px 0;
  color: var(--text-tertiary);
  font-size: 0.875rem;
  border-top: 1px solid var(--card-border);
  margin-top: auto;
}

.footer a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: var(--text-primary);
}

/* 游戏库页面特定样式 */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  gap: 16px;
  flex-wrap: wrap;
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--card-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.back-btn:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
  box-shadow: var(--card-shadow);
}

/* 游戏卡片 */
.game-card {
  background: var(--card-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius);
  padding: 40px 32px;
  box-shadow: var(--card-shadow);
  transition: all var(--transition-normal);
}

.game-card:hover {
  box-shadow: var(--card-shadow-hover);
}

.game-header {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 24px;
}

.game-icon {
  font-size: 3.5rem;
  flex-shrink: 0;
}

.game-info {
  flex: 1;
}

.game-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.game-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

.game-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  background: var(--bg-secondary);
  border-radius: 20px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.game-description {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.7;
}

.game-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-bottom: 24px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-radius: var(--border-radius-sm);
}

.game-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 框架页面样式 */
.frame-container {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.frame-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--card-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-bottom: 1px solid var(--card-border);
  z-index: 10;
}

.frame-content {
  flex: 1;
  width: 100%;
  position: relative;
}

.frame-content iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

/* 占位页面样式 */
.placeholder-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
  padding: 40px 24px;
}

.placeholder-icon {
  font-size: 5rem;
  margin-bottom: 24px;
  opacity: 0.6;
}

.placeholder-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.placeholder-text {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 400px;
}

/* 响应式调整 */
@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }

  .header {
    padding: 16px 0;
  }

  .logo {
    font-size: 1.5rem;
  }

  .hero {
    padding: 40px 0 24px;
  }

  .card {
    padding: 24px 20px;
  }

  .card-icon {
    font-size: 2.5rem;
  }

  .card-title {
    font-size: 1.25rem;
  }

  .game-card {
    padding: 24px 20px;
  }

  .game-header {
    flex-direction: column;
    gap: 16px;
  }

  .game-icon {
    font-size: 3rem;
  }

  .game-title {
    font-size: 1.5rem;
  }

  .game-actions {
    flex-direction: column;
  }

  .game-actions .btn {
    width: 100%;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* 平板适配 */
@media (min-width: 768px) and (max-width: 1023px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 动画效果 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fadeIn 0.6s ease-out backwards;
}

.card:nth-child(1) {
  animation-delay: 0.1s;
}

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

.card:nth-child(3) {
  animation-delay: 0.3s;
}

/* 选择文本样式 */
::selection {
  background: rgba(102, 126, 234, 0.3);
  color: var(--text-primary);
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--text-tertiary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* 禁用文本选择（卡片等可交互元素） */
.card,
.btn,
.theme-toggle {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* Premium refinement pass */
:root {
  --bg-primary: #f5f5f7;
  --bg-secondary: #ffffff;
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;
  --card-bg: rgba(255, 255, 255, 0.7);
  --card-border: rgba(0, 0, 0, 0.06);
  --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --card-shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.12);
  --button-gradient: linear-gradient(180deg, #19191c 0%, #2a2a2f 100%);
  --button-bg: #ffffff;
  --button-text: #111113;
  --button-border: rgba(17, 17, 19, 0.12);
  --button-shadow: 0 10px 24px rgba(15, 15, 18, 0.12);
  --status-online: #2ab673;
  --status-offline: #d44a3a;
  --backdrop-blur: blur(20px);
}

[data-theme="dark"] {
  --bg-primary: #0d0d0d;
  --bg-secondary: #1c1c1e;
  --text-primary: #ffffff;
  --text-secondary: #a1a1a6;
  --text-tertiary: #6e6e73;
  --card-bg: rgba(28, 28, 30, 0.8);
  --card-border: rgba(255, 255, 255, 0.1);
  --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 12px 48px rgba(102, 126, 234, 0.2);
  --button-gradient: linear-gradient(180deg, #f5f5f7 0%, #d9d9dd 100%);
  --button-bg: #050506;
  --button-text: #ffffff;
  --button-border: rgba(255, 255, 255, 0.12);
  --button-shadow: 0 12px 28px rgba(0, 0, 0, 0.26);
}

body::before {
  background:
    radial-gradient(circle at 20% 12%, rgba(255, 255, 255, 0.72) 0%, transparent 34%),
    radial-gradient(circle at 84% 18%, rgba(215, 219, 228, 0.26) 0%, transparent 30%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0));
}

.container {
  max-width: 1240px;
  padding: 0 28px;
}

.header {
  padding: 26px 0 18px;
}

.logo {
  font-size: 1.08rem;
  font-weight: 650;
  letter-spacing: -0.03em;
}

.hero {
  padding: 84px 0 48px;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.06em;
  max-width: 10.5ch;
  margin: 0 auto 14px;
}

.hero-subtitle {
  max-width: 44rem;
  margin: 0 auto;
  font-size: clamp(1rem, 2vw, 1.125rem);
}

.cards-grid {
  gap: 28px;
  padding: 26px 0 84px;
}

@media (min-width: 768px) {
  .cards-grid {
    gap: 30px;
    padding: 38px 0 92px;
  }
}

.card {
  border-radius: 24px;
  padding: 32px 30px;
}

.card::before {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(17, 17, 19, 0.16), transparent);
  opacity: 0.72;
}

.card:hover {
  transform: translateY(-2px);
}

.card-icon {
  font-size: 2.35rem;
  margin-bottom: 18px;
}

.card-title {
  font-size: 1.34rem;
  font-weight: 650;
  letter-spacing: -0.03em;
}

.card-description {
  line-height: 1.75;
}

.btn {
  border-radius: 999px;
  padding: 12px 20px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--button-text);
  background: var(--button-bg);
  border: 1px solid var(--button-border);
  box-shadow: var(--button-shadow);
  text-decoration: none;
  letter-spacing: 0;
}

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

.btn-secondary {
  background: var(--button-bg);
  color: var(--button-text);
  border: 1px solid var(--button-border);
  box-shadow: none;
}

.page-header {
  padding: 26px 0 18px;
}

.page-title {
  font-size: 1.72rem;
  font-weight: 650;
  letter-spacing: -0.03em;
}

.back-btn {
  border-radius: 999px;
}

.game-card,
.placeholder-page {
  border-radius: 24px;
}

.placeholder-title {
  font-size: 1.8rem;
  font-weight: 650;
  letter-spacing: -0.03em;
}

.footer {
  padding: 28px 0 34px;
}

::selection {
  background: rgba(17, 17, 19, 0.12);
  color: var(--text-primary);
}

/* ZCode homepage system polish */
.shell {
  max-width: 1180px;
}

.logo {
  color: var(--text-primary);
  text-decoration: none;
  -webkit-text-fill-color: currentColor;
  background: none;
}

.top-nav {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 5px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
}

.top-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 520;
  padding: 7px 14px;
  border-radius: 999px;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.top-nav a:hover {
  color: var(--text-primary);
  background: rgba(17, 17, 19, 0.06);
}

[data-theme="dark"] .top-nav {
  background: rgba(21, 21, 24, 0.72);
}

[data-theme="dark"] .top-nav a:hover {
  background: rgba(255, 255, 255, 0.08);
}

.hero-premium {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 38px;
  min-height: min(640px, calc(100vh - 160px));
  text-align: left;
  padding: 54px 0 34px;
}

.hero-copy {
  max-width: 620px;
}

.eyebrow {
  color: var(--text-tertiary);
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.hero-premium .hero-title {
  max-width: none;
  margin: 0 0 16px;
  color: var(--text-primary);
  background: none;
  -webkit-text-fill-color: currentColor;
  font-size: clamp(4rem, 13vw, 8rem);
  line-height: 0.92;
}

.hero-premium .hero-subtitle {
  max-width: 34rem;
  margin: 0;
  font-size: clamp(1.05rem, 2vw, 1.32rem);
  line-height: 1.75;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.visual-stage {
  position: relative;
  width: min(82vw, 420px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 38px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.38)),
    linear-gradient(135deg, rgba(17, 17, 19, 0.06), rgba(17, 17, 19, 0));
  border: 1px solid var(--card-border);
  box-shadow: 0 30px 80px rgba(15, 15, 18, 0.12);
  overflow: hidden;
}

.visual-stage::before {
  content: "";
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  background: rgba(17, 17, 19, 0.06);
  filter: blur(10px);
}

.visual-stage img {
  position: relative;
  width: min(58%, 260px);
  height: auto;
  image-rendering: pixelated;
  filter: drop-shadow(0 28px 20px rgba(0, 0, 0, 0.18));
}

[data-theme="dark"] .visual-stage {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)),
    linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0));
}

[data-theme="dark"] .visual-stage::before {
  background: rgba(255, 255, 255, 0.08);
}

.feature-grid {
  grid-template-columns: 1fr;
  padding-top: 18px;
}

.feature-card {
  min-height: 260px;
}

.feature-card .card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  height: 30px;
  padding: 0 11px;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 650;
  margin-bottom: 22px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  margin-top: auto;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 620;
}

.card-link span {
  transition: transform var(--transition-fast);
}

.card-link:hover span {
  transform: translateX(3px);
}

.loading-spinner {
  width: 34px;
  height: 34px;
  border-width: 2px;
  border-top-color: var(--text-primary);
}

@media (min-width: 760px) {
  .top-nav {
    display: flex;
  }

  .hero-premium {
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
    padding: 46px 0 48px;
  }

  .feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 759px) {
  .header {
    gap: 12px;
  }

  .hero-premium {
    text-align: left;
  }

  .visual-stage {
    width: min(78vw, 330px);
    border-radius: 30px;
  }
}

/* Immersive portal redesign */
:root {
  --portal-bg: #f6f7fb;
  --portal-bg-2: #e8ebf3;
  --portal-text: #0c0d10;
  --portal-muted: #686d78;
  --portal-soft: rgba(255, 255, 255, 0.32);
  --portal-soft-strong: rgba(255, 255, 255, 0.58);
  --portal-line: rgba(16, 20, 28, 0.12);
  --portal-glow-a: rgba(77, 126, 255, 0.18);
  --portal-glow-b: rgba(18, 22, 30, 0.08);
  --portal-chip-bg: rgba(255, 255, 255, 0.72);
  --portal-button-bg: #ffffff;
  --portal-button-text: #0b0d12;
  --portal-shadow: 0 28px 80px rgba(41, 48, 64, 0.14);
}

[data-theme="dark"] {
  --portal-bg: #08090d;
  --portal-bg-2: #11131a;
  --portal-text: #f6f7fb;
  --portal-muted: #a7adba;
  --portal-soft: rgba(22, 25, 35, 0.42);
  --portal-soft-strong: rgba(255, 255, 255, 0.07);
  --portal-line: rgba(255, 255, 255, 0.16);
  --portal-glow-a: rgba(98, 157, 255, 0.32);
  --portal-glow-b: rgba(127, 92, 255, 0.2);
  --portal-chip-bg: rgba(255, 255, 255, 0.08);
  --portal-button-bg: #07080b;
  --portal-button-text: #ffffff;
  --portal-shadow: 0 34px 92px rgba(0, 0, 0, 0.42);
}

.portal-page {
  background:
    radial-gradient(circle at 50% -8%, var(--portal-glow-a), transparent 34rem),
    radial-gradient(circle at 86% 18%, var(--portal-glow-b), transparent 28rem),
    linear-gradient(180deg, var(--portal-bg), var(--portal-bg-2));
  color: var(--portal-text);
}

.portal-page::before {
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(circle at 50% 18%, black, transparent 70%);
}

[data-theme="light"] .portal-page::before,
:root:not([data-theme="dark"]) .portal-page::before {
  background:
    linear-gradient(rgba(18, 22, 30, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 22, 30, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
}

.ambient-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.46;
}

.portal-shell {
  max-width: 1180px;
  position: relative;
}

.portal-header {
  padding-top: 24px;
}

.portal-logo {
  color: var(--portal-text);
}

.portal-nav {
  background: var(--portal-chip-bg);
  border-color: var(--portal-line);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.08);
}

.portal-nav a {
  color: var(--portal-muted);
}

.portal-nav a:hover {
  color: var(--portal-text);
  background: rgba(255, 255, 255, 0.08);
}

[data-theme="light"] .portal-nav a:hover {
  background: rgba(0, 0, 0, 0.06);
}

.theme-toggle {
  color: var(--portal-text);
  background: var(--portal-chip-bg);
  border-color: var(--portal-line);
}

.portal-main {
  min-height: calc(100vh - 170px);
}

.portal-hero {
  min-height: min(720px, calc(100vh - 136px));
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(360px, 1.06fr);
  align-items: center;
  gap: 44px;
  padding: 34px 0 44px;
}

.portal-copy {
  max-width: 620px;
}

.portal-copy .eyebrow {
  color: var(--portal-muted);
}

.portal-title {
  color: var(--portal-text);
  background: none;
  -webkit-text-fill-color: currentColor;
  font-size: clamp(4.4rem, 12vw, 8.6rem);
  line-height: 0.88;
  letter-spacing: -0.08em;
  margin-bottom: 22px;
}

.portal-subtitle {
  color: var(--portal-muted);
  max-width: 35rem;
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  line-height: 1.82;
}

.core-stage {
  position: relative;
  min-height: 500px;
  display: block;
  border-radius: 44px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 42%, rgba(255, 255, 255, 0.13), transparent 12rem),
    linear-gradient(145deg, var(--portal-soft), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--portal-line);
  box-shadow: var(--portal-shadow);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

[data-theme="light"] .core-stage {
  background:
    radial-gradient(circle at 50% 42%, rgba(77, 126, 255, 0.14), transparent 12rem),
    linear-gradient(145deg, rgba(255, 255, 255, 0.86), rgba(235, 238, 246, 0.56));
}

.core-grid {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: 0.2;
  mask-image: radial-gradient(circle, black, transparent 74%);
}

[data-theme="light"] .core-grid {
  background:
    linear-gradient(rgba(20, 25, 36, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 25, 36, 0.09) 1px, transparent 1px);
}

.ai-core {
  position: absolute;
  left: 50%;
  top: 50%;
  translate: -50% -50%;
  width: min(42vw, 240px);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 36% 28%, rgba(255, 255, 255, 0.98), transparent 18%),
    radial-gradient(circle at 52% 44%, #80b7ff, #495cff 42%, #151727 72%);
  box-shadow:
    0 0 44px rgba(111, 168, 255, 0.48),
    0 0 120px rgba(88, 90, 255, 0.35),
    inset -30px -30px 70px rgba(0, 0, 0, 0.34);
  animation: corePulse 6.5s ease-in-out infinite;
}

[data-theme="light"] .ai-core {
  background:
    radial-gradient(circle at 34% 26%, #ffffff, transparent 18%),
    radial-gradient(circle at 52% 44%, #dce8ff, #91b8ff 43%, #f7f9ff 74%);
  box-shadow:
    0 0 36px rgba(92, 142, 255, 0.26),
    0 24px 90px rgba(58, 84, 145, 0.22),
    inset -24px -24px 70px rgba(92, 142, 255, 0.16);
}

.core-shine {
  position: absolute;
  inset: 18%;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.46), transparent 58%);
  filter: blur(2px);
}

.core-orbit {
  position: absolute;
  left: 50%;
  top: 50%;
  translate: -50% -50%;
  width: min(58vw, 350px);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(136, 170, 255, 0.28);
  animation: orbitSpin 34s linear infinite;
}

.orbit-two {
  width: min(64vw, 410px);
  transform: rotate(58deg) scaleY(0.62);
  animation-duration: 46s;
}

.orbit-three {
  width: min(48vw, 300px);
  transform: rotate(-36deg) scaleY(0.72);
  animation-duration: 30s;
  border-color: rgba(255, 255, 255, 0.16);
}

[data-theme="light"] .core-orbit {
  border-color: rgba(65, 93, 154, 0.22);
}

.core-chip {
  position: absolute;
  padding: 9px 13px;
  color: var(--portal-text);
  background: var(--portal-chip-bg);
  border: 1px solid var(--portal-line);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 650;
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.14);
}

.chip-left {
  left: 10%;
  top: 24%;
}

.chip-right {
  right: 10%;
  bottom: 22%;
}

.portal-dock {
  grid-column: 1 / -1;
  justify-self: center;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  background: var(--portal-chip-bg);
  border: 1px solid var(--portal-line);
  border-radius: 28px;
  box-shadow: var(--portal-shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.portal-dock a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 118px;
  padding: 10px 14px;
  color: var(--portal-text);
  text-decoration: none;
  border-radius: 20px;
  font-weight: 650;
  transition: transform 0.2s ease, background 0.2s ease;
}

.portal-dock a:hover {
  transform: translateY(-4px) scale(1.03);
  background: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .portal-dock a:hover {
  background: rgba(0, 0, 0, 0.06);
}

.dock-icon {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  color: var(--portal-button-text);
  background: var(--portal-button-bg);
  border: 1px solid var(--button-border);
  border-radius: 12px;
  font-size: 0.78rem;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
}

.portal-panels {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  padding: 10px 0 68px;
}

.portal-panels::before {
  content: "";
  position: absolute;
  inset: -36px -28px 22px;
  z-index: -1;
  border-radius: 40px;
  background:
    radial-gradient(circle at 18% 20%, rgba(113, 158, 255, 0.16), transparent 26%),
    radial-gradient(circle at 82% 34%, rgba(160, 116, 255, 0.13), transparent 30%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04), transparent);
  filter: blur(2px);
}

[data-theme="light"] .portal-panels::before {
  background:
    radial-gradient(circle at 18% 20%, rgba(91, 136, 240, 0.16), transparent 26%),
    radial-gradient(circle at 82% 34%, rgba(154, 171, 210, 0.22), transparent 30%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.44), transparent);
}

.portal-panel {
  display: flex;
  min-height: 230px;
  flex-direction: column;
  padding: 24px;
  background: var(--portal-soft);
  border: 1px solid var(--portal-line);
  border-radius: 28px;
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.panel-kicker {
  width: fit-content;
  margin-bottom: 22px;
  padding: 6px 10px;
  color: var(--portal-muted);
  background: var(--portal-chip-bg);
  border: 1px solid var(--portal-line);
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
}

.portal-panel h2 {
  margin-bottom: 10px;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
}

.portal-panel p {
  color: var(--portal-muted);
  line-height: 1.7;
}

.portal-panel a {
  display: inline-flex;
  gap: 6px;
  width: fit-content;
  margin-top: auto;
  color: var(--portal-text);
  text-decoration: none;
  font-weight: 700;
}

.portal-panel a span {
  transition: transform 0.2s ease;
}

.portal-panel a:hover span {
  transform: translateX(3px);
}

.portal-footer {
  color: var(--portal-muted);
}

.portal-footer a {
  color: var(--portal-muted);
}

@keyframes corePulse {
  0%, 100% {
    scale: 1;
  }
  50% {
    scale: 1.045;
  }
}

@keyframes orbitSpin {
  to {
    rotate: 360deg;
  }
}

@media (max-width: 980px) {
  .portal-hero {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .core-stage {
    min-height: 420px;
  }

  .portal-panels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .portal-title {
    font-size: clamp(4rem, 22vw, 6.2rem);
  }

  .portal-hero {
    padding-top: 24px;
  }

  .core-stage {
    min-height: 340px;
    border-radius: 32px;
  }

  .core-orbit,
  .core-grid,
  .ambient-canvas {
    display: none;
  }

  .portal-dock {
    width: 100%;
    overflow-x: auto;
    justify-content: flex-start;
    border-radius: 24px;
  }

  .portal-dock a {
    min-width: 108px;
  }

  .portal-panels {
    grid-template-columns: 1fr;
  }

  .chip-left,
  .chip-right {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ambient-canvas,
  .core-orbit,
  .core-grid {
    display: none;
  }

  .ai-core,
  .card {
    animation: none;
  }
}

/* Refined theme switch and glass surfaces */
html,
body,
.portal-page,
.portal-nav,
.portal-dock,
.portal-panel,
.core-stage,
.theme-toggle,
.dock-icon,
.portal-panel a,
.portal-title,
.portal-subtitle {
  transition:
    background-color 0.55s cubic-bezier(0.22, 1, 0.36, 1),
    background 0.55s cubic-bezier(0.22, 1, 0.36, 1),
    color 0.45s ease,
    border-color 0.45s ease,
    box-shadow 0.55s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.45s ease,
    transform 0.35s ease;
}

.theme-toggle {
  width: 74px;
  height: 40px;
  padding: 0;
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04)),
    var(--portal-chip-bg);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 14px 32px rgba(0, 0, 0, 0.18);
}

[data-theme="light"] .theme-toggle {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(242, 244, 249, 0.72));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 12px 28px rgba(35, 42, 62, 0.12);
}

.theme-switch {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
}

.theme-knob {
  position: absolute;
  top: 5px;
  left: 5px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 36% 30%, rgba(255, 255, 255, 0.95), transparent 28%),
    linear-gradient(145deg, #14161c, #050609);
  box-shadow:
    0 8px 18px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.18);
  transition:
    transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    background 0.45s ease,
    box-shadow 0.45s ease;
}

[data-theme="light"] .theme-knob {
  transform: translateX(34px);
  background:
    radial-gradient(circle at 35% 28%, #ffffff, transparent 30%),
    linear-gradient(145deg, #ffffff, #dfe4ee);
  box-shadow:
    0 8px 18px rgba(70, 82, 110, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

.theme-glyph {
  position: absolute;
  top: 50%;
  width: 16px;
  height: 16px;
  transform: translateY(-50%);
  opacity: 0.55;
  transition: opacity 0.35s ease, transform 0.45s ease;
}

.theme-moon {
  right: 12px;
  border-radius: 50%;
  background: #f5f7ff;
  box-shadow: inset -5px -1px 0 #6f7688;
}

.theme-sun {
  left: 12px;
  border-radius: 50%;
  border: 2px solid #171a20;
}

.theme-sun::before,
.theme-sun::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: inherit;
  background:
    linear-gradient(#171a20, #171a20) center top / 2px 4px no-repeat,
    linear-gradient(#171a20, #171a20) center bottom / 2px 4px no-repeat,
    linear-gradient(90deg, #171a20, #171a20) left center / 4px 2px no-repeat,
    linear-gradient(90deg, #171a20, #171a20) right center / 4px 2px no-repeat;
}

[data-theme="dark"] .theme-sun {
  opacity: 0.28;
}

[data-theme="dark"] .theme-moon,
[data-theme="light"] .theme-sun {
  opacity: 0.9;
}

[data-theme="light"] .theme-moon {
  opacity: 0.25;
  transform: translateY(-50%) scale(0.9);
}

.core-stage,
.portal-dock,
.portal-panel {
  position: relative;
  isolation: isolate;
}

.core-stage::after,
.portal-dock::after,
.portal-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 0;
}

.core-stage::after,
.portal-dock::after {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent 38%),
    linear-gradient(315deg, rgba(255, 255, 255, 0.08), transparent 42%);
  opacity: 0.75;
}

.portal-panel {
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.015) 46%, rgba(0, 0, 0, 0.08)),
    rgba(14, 17, 25, 0.34);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.24),
    inset 0 -1px 0 rgba(255, 255, 255, 0.05),
    0 24px 54px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(18px) saturate(1.28);
  -webkit-backdrop-filter: blur(18px) saturate(1.28);
}

.portal-panel::before {
  background:
    radial-gradient(circle at 18% 0%, rgba(255, 255, 255, 0.28), transparent 34%),
    linear-gradient(115deg, rgba(255, 255, 255, 0.12), transparent 38%),
    linear-gradient(290deg, rgba(255, 255, 255, 0.06), transparent 42%);
  opacity: 0.85;
}

.portal-panel > * {
  position: relative;
  z-index: 1;
}

.portal-dock > * {
  position: relative;
  z-index: 1;
}

.core-grid {
  z-index: 0;
}

.core-orbit {
  z-index: 1;
}

.ai-core {
  z-index: 2;
}

.core-chip {
  z-index: 3;
}

[data-theme="light"] .portal-panel {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.28) 46%, rgba(210, 218, 235, 0.2)),
    rgba(255, 255, 255, 0.26);
  border-color: rgba(34, 45, 72, 0.12);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.82),
    inset 0 -1px 0 rgba(255, 255, 255, 0.4),
    0 22px 58px rgba(42, 55, 86, 0.14);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
}

[data-theme="light"] .portal-panel::before {
  background:
    radial-gradient(circle at 16% 0%, rgba(255, 255, 255, 0.9), transparent 32%),
    linear-gradient(120deg, rgba(255, 255, 255, 0.38), transparent 40%),
    linear-gradient(300deg, rgba(101, 132, 210, 0.1), transparent 46%);
  opacity: 0.9;
}

/* Spatial glass refinement */
.portal-page {
  position: relative;
  background:
    radial-gradient(ellipse 760px 420px at 22% 12%, rgba(97, 143, 255, 0.18), transparent 62%),
    radial-gradient(ellipse 620px 360px at 82% 8%, rgba(186, 156, 255, 0.12), transparent 60%),
    radial-gradient(ellipse 720px 460px at 50% 86%, rgba(83, 124, 210, 0.12), transparent 66%),
    linear-gradient(180deg, #f7f8fc 0%, #edf1f8 48%, #e7ecf5 100%);
}

[data-theme="dark"] .portal-page {
  background:
    radial-gradient(ellipse 760px 420px at 18% 10%, rgba(72, 118, 255, 0.26), transparent 62%),
    radial-gradient(ellipse 620px 360px at 82% 8%, rgba(155, 94, 255, 0.18), transparent 60%),
    radial-gradient(ellipse 780px 470px at 50% 88%, rgba(48, 86, 172, 0.22), transparent 68%),
    linear-gradient(180deg, #05060a 0%, #090b11 48%, #0e111a 100%);
}

.portal-page::before {
  z-index: 0;
  opacity: 0.52;
  background:
    linear-gradient(rgba(86, 102, 134, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(86, 102, 134, 0.055) 1px, transparent 1px),
    radial-gradient(circle at 35% 28%, rgba(255, 255, 255, 0.5), transparent 28rem);
  background-size: 72px 72px, 72px 72px, auto;
  mask-image: linear-gradient(180deg, transparent 0%, black 16%, black 78%, transparent 100%);
}

[data-theme="dark"] .portal-page::before {
  opacity: 0.62;
  background:
    linear-gradient(rgba(196, 214, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(196, 214, 255, 0.055) 1px, transparent 1px),
    radial-gradient(circle at 35% 28%, rgba(88, 142, 255, 0.13), transparent 28rem);
  background-size: 72px 72px, 72px 72px, auto;
}

.portal-page::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(115deg, transparent 0 30%, rgba(255, 255, 255, 0.28) 42%, transparent 54%),
    linear-gradient(245deg, transparent 0 44%, rgba(99, 136, 210, 0.12) 55%, transparent 66%);
  opacity: 0.5;
}

[data-theme="dark"] .portal-page::after {
  background:
    linear-gradient(115deg, transparent 0 31%, rgba(109, 151, 255, 0.08) 43%, transparent 56%),
    linear-gradient(245deg, transparent 0 44%, rgba(178, 119, 255, 0.08) 55%, transparent 68%);
  opacity: 0.75;
}

.ambient-canvas {
  z-index: 0;
  opacity: 0.22;
}

[data-theme="dark"] .ambient-canvas {
  opacity: 0.3;
}

.portal-shell,
.loading-screen {
  position: relative;
  z-index: 1;
}

.core-stage {
  background:
    radial-gradient(circle at 48% 44%, rgba(130, 171, 255, 0.2), transparent 14rem),
    linear-gradient(140deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.025) 48%, rgba(0, 0, 0, 0.1)),
    rgba(14, 17, 25, 0.28);
  border-color: rgba(255, 255, 255, 0.16);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    inset 0 -1px 0 rgba(255, 255, 255, 0.05),
    0 34px 90px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(22px) saturate(1.25);
  -webkit-backdrop-filter: blur(22px) saturate(1.25);
}

[data-theme="light"] .core-stage {
  background:
    radial-gradient(circle at 48% 44%, rgba(111, 156, 255, 0.24), transparent 14rem),
    linear-gradient(140deg, rgba(255, 255, 255, 0.58), rgba(255, 255, 255, 0.18) 48%, rgba(192, 205, 232, 0.16)),
    rgba(255, 255, 255, 0.24);
  border-color: rgba(58, 75, 112, 0.12);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.85),
    inset 0 -1px 0 rgba(255, 255, 255, 0.34),
    0 34px 88px rgba(41, 56, 92, 0.14);
}

.portal-panels::before {
  inset: -64px -42px 8px;
  background:
    radial-gradient(ellipse 420px 220px at 18% 20%, rgba(94, 144, 255, 0.22), transparent 64%),
    radial-gradient(ellipse 460px 240px at 76% 22%, rgba(172, 124, 255, 0.16), transparent 62%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08), transparent 55%);
  filter: blur(0);
}

[data-theme="light"] .portal-panels::before {
  background:
    radial-gradient(ellipse 420px 220px at 18% 20%, rgba(92, 136, 235, 0.2), transparent 64%),
    radial-gradient(ellipse 460px 240px at 76% 22%, rgba(176, 190, 228, 0.28), transparent 62%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.42), transparent 56%);
}

.portal-panel {
  border-radius: 30px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.035) 45%, rgba(0, 0, 0, 0.14)),
    rgba(12, 15, 22, 0.28);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.25),
    inset 0 0 0 1px rgba(255, 255, 255, 0.035),
    0 28px 64px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(22px) saturate(1.35);
  -webkit-backdrop-filter: blur(22px) saturate(1.35);
}

.portal-panel::before {
  background:
    radial-gradient(circle at 20% 0%, rgba(255, 255, 255, 0.28), transparent 34%),
    linear-gradient(125deg, rgba(255, 255, 255, 0.16), transparent 38%),
    linear-gradient(300deg, rgba(119, 157, 255, 0.1), transparent 48%);
  opacity: 0.92;
}

[data-theme="light"] .portal-panel {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.54), rgba(255, 255, 255, 0.18) 48%, rgba(203, 214, 237, 0.14)),
    rgba(255, 255, 255, 0.16);
  border-color: rgba(55, 72, 110, 0.11);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    inset 0 0 0 1px rgba(255, 255, 255, 0.24),
    0 28px 70px rgba(45, 58, 86, 0.13);
}

[data-theme="light"] .portal-panel::before {
  background:
    radial-gradient(circle at 18% 0%, rgba(255, 255, 255, 0.86), transparent 34%),
    linear-gradient(125deg, rgba(255, 255, 255, 0.36), transparent 40%),
    linear-gradient(300deg, rgba(93, 126, 200, 0.12), transparent 48%);
  opacity: 0.96;
}