/* ============================================================
   EasyPanel Heavy 官网样式
   浅色玻璃拟态（BitSign 设计语言）· 零外部依赖 · 响应式
   设计令牌前缀：--bs-*
   ============================================================ */

:root {
  --bs-primary: #0F172A;
  --bs-accent: #3B82F6;
  --bs-accent-hover: #2563EB;
  --bs-accent-light: #93C5FD;
  --bs-accent-soft: #DBEAFE;
  --bs-success: #10B981;
  --bs-warning: #F59E0B;
  --bs-error: #EF4444;
  --bs-purple: #8B5CF6;
  --bs-bg: #F8FAFC;
  --bs-card: #FFFFFF;
  --bs-ai-bg: #EFF6FF;
  --bs-muted: #F1F5F9;
  --bs-foreground: #1F1F26;
  --bs-text-secondary: #64748B;
  --bs-text-muted: #94A3B8;
  --bs-text-inverse: #F8FAFC;
  --bs-border: #E2E8F0;
  --bs-border-light: rgba(255, 255, 255, .30);

  --bs-glass-bg: rgba(255, 255, 255, .80);
  --bs-glass-bg-heavy: rgba(255, 255, 255, .48);
  --bs-glass-blur: 28px;
  --bs-glass-highlight: inset 0 1px 0 rgba(255, 255, 255, .50);
  --bs-glass-border: .5px solid rgba(0, 0, 0, .10);
  --bs-glass-shadow: 0 2px 10px rgba(0, 0, 0, .03);

  --bs-canvas-gradient: linear-gradient(160deg, #F8FAFF 0%, #FAF8FF 35%, #FFF9FA 65%, #F8FFFE 100%);
  --bs-font-family: 'PingFang SC', 'Inter', system-ui, -apple-system, sans-serif;
  --bs-font-mono: 'SF Mono', 'Menlo', monospace;

  --bs-radius-sm: 8px;
  --bs-radius-md: 16px;
  --bs-radius-lg: 24px;
  --bs-radius-xl: 32px;
  --bs-radius-full: 9999px;

  --bs-shadow-sm: 0 2px 8px rgba(0, 0, 0, .04);
  --bs-shadow-md: 0 4px 16px rgba(0, 0, 0, .06);
  --bs-shadow-lg: 0 8px 32px rgba(0, 0, 0, .08);

  --maxw: 1120px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
}

body {
  margin: 0;
  font-family: var(--bs-font-family);
  background: var(--bs-canvas-gradient);
  background-attachment: fixed;
  color: var(--bs-foreground);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

code {
  font-family: var(--bs-font-mono);
  font-size: 0.9em;
  background: var(--bs-muted);
  padding: 0.12em 0.42em;
  border-radius: 6px;
  color: var(--bs-accent);
}

/* ============ 背景光晕装饰 ============ */
.decor {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.orb-blue {
  width: 320px;
  height: 320px;
  top: -60px;
  left: -40px;
  background: #3B82F6;
  opacity: .06;
  filter: blur(65px);
}

.orb-purple {
  width: 300px;
  height: 300px;
  right: -40px;
  bottom: -60px;
  background: #8B5CF6;
  opacity: .05;
  filter: blur(70px);
}

.orb-pink {
  width: 280px;
  height: 280px;
  top: 42%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #EC4899;
  opacity: .04;
  filter: blur(60px);
}

.orb-green {
  width: 340px;
  height: 340px;
  top: 28%;
  right: 6%;
  background: #10B981;
  opacity: .05;
  filter: blur(60px);
}

/* ============ 导航（玻璃态） ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bs-glass-bg);
  backdrop-filter: blur(var(--bs-glass-blur));
  -webkit-backdrop-filter: blur(var(--bs-glass-blur));
  border-bottom: var(--bs-glass-border);
  box-shadow: var(--bs-glass-shadow);
}

.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.08rem;
  letter-spacing: 0.2px;
  color: var(--bs-foreground);
}

.nav-logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--bs-accent-soft);
  color: var(--bs-accent);
}

.nav-logo-mark svg { width: 20px; height: 20px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-links a {
  color: var(--bs-text-secondary);
  font-size: 0.94rem;
  transition: color 0.18s ease;
}

.nav-links a:hover { color: var(--bs-accent); }

.nav-github {
  padding: 6px 16px;
  border: 1px solid var(--bs-border);
  border-radius: var(--bs-radius-full);
  color: var(--bs-accent) !important;
  background: var(--bs-card);
  transition: border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.nav-github:hover {
  border-color: var(--bs-accent);
  box-shadow: var(--bs-shadow-sm);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 36px;
  padding: 0 8px;
  background: var(--bs-card);
  border: 1px solid var(--bs-border);
  border-radius: 8px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--bs-foreground);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ 通用 section ============ */
main { display: block; }

.section-head {
  max-width: var(--maxw);
  margin: 0 auto 36px;
  padding: 0 24px;
  text-align: center;
}

.section-title {
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--bs-foreground);
}

.section-desc {
  color: var(--bs-text-secondary);
  margin: 0;
  font-size: 1rem;
}

/* ============ Hero ============ */
.hero {
  position: relative;
  padding: 96px 24px 88px;
  overflow: hidden;
  text-align: center;
}

.hero-glow {
  position: absolute;
  top: -180px;
  left: 50%;
  transform: translateX(-50%);
  width: 760px;
  height: 520px;
  background: radial-gradient(closest-side, rgba(59, 130, 246, 0.12), transparent 70%);
  filter: blur(20px);
  pointer-events: none;
  z-index: 0;
}

.hero-inner { position: relative; z-index: 1; max-width: 820px; margin: 0 auto; }

.hero-badges {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.badge {
  font-size: 0.8rem;
  padding: 5px 14px;
  border-radius: var(--bs-radius-full);
  border: 1px solid var(--bs-border);
  background: var(--bs-muted);
  color: var(--bs-text-secondary);
  letter-spacing: 0.3px;
}

.hero-title {
  font-size: clamp(2.1rem, 6vw, 3.4rem);
  line-height: 1.15;
  font-weight: 800;
  margin: 0 0 18px;
  letter-spacing: -0.5px;
  color: var(--bs-foreground);
}

.hero-sub {
  font-size: clamp(1rem, 2.4vw, 1.25rem);
  color: var(--bs-text-secondary);
  margin: 0 auto 32px;
  max-width: 560px;
}

.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--bs-radius-full);
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.btn-primary {
  background: var(--bs-accent);
  color: #FFFFFF;
  border: none;
  box-shadow: 0 8px 22px rgba(59, 130, 246, 0.32);
}

.btn-primary:hover {
  background: var(--bs-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(59, 130, 246, 0.40);
}

.btn-ghost {
  border: 1px solid var(--bs-border);
  color: var(--bs-foreground);
  background: var(--bs-card);
  box-shadow: var(--bs-shadow-sm);
}

.btn-ghost:hover { border-color: var(--bs-accent); color: var(--bs-accent); }

/* ============ 安装区（最突出 · 玻璃态卡片） ============ */
.install { padding: 30px 24px 80px; }

.install-card {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  background: var(--bs-glass-bg);
  backdrop-filter: blur(var(--bs-glass-blur));
  -webkit-backdrop-filter: blur(var(--bs-glass-blur));
  border: 1px solid rgba(59, 130, 246, 0.18);
  border-radius: var(--bs-radius-lg);
  padding: 32px 36px;
  box-shadow: var(--bs-glass-shadow), 0 18px 50px rgba(59, 130, 246, 0.10);
  overflow: hidden;
}

/* 顶部玻璃高光 + 外层淡蓝光晕 */
.install-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--bs-radius-lg);
  box-shadow: var(--bs-glass-highlight);
  pointer-events: none;
}

.install-tabs {
  display: inline-flex;
  gap: 4px;
  margin-bottom: 20px;
  padding: 4px;
  background: var(--bs-muted);
  border-radius: var(--bs-radius-sm);
}

.tab-btn {
  flex: 0 0 auto;
  padding: 8px 20px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--bs-text-muted);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.18s ease;
}

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

.tab-btn.active {
  background: var(--bs-card);
  color: var(--bs-foreground);
  font-weight: 600;
  box-shadow: var(--bs-shadow-sm);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 0.25s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 终端风格代码块 */
.code-block {
  background: var(--bs-primary);
  border-radius: var(--bs-radius-md);
  overflow: hidden;
  box-shadow: var(--bs-shadow-md);
}

.code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.code-lang {
  font-family: var(--bs-font-mono);
  font-size: 0.78rem;
  color: var(--bs-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.copy-btn {
  font-size: 0.82rem;
  padding: 4px 14px;
  border-radius: 7px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: var(--bs-text-inverse);
  cursor: pointer;
  transition: all 0.18s ease;
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.35);
}

.copy-btn.copied {
  color: #FFFFFF;
  background: var(--bs-success);
  border-color: transparent;
  font-weight: 600;
}

.code-body {
  margin: 0;
  padding: 18px 18px;
  overflow-x: auto;
}

.code-body code {
  font-family: var(--bs-font-mono);
  font-size: 0.92rem;
  line-height: 1.6;
  background: none;
  padding: 0;
  color: #E2E8F0;
  white-space: pre;
  display: block;
}

/* 命令语法高亮 */
.tok-cmd { color: var(--bs-accent-light); font-weight: 600; }
.tok-url { color: var(--bs-accent-light); }

.hint {
  margin: 12px 2px 0;
  font-size: 0.86rem;
  color: var(--bs-text-muted);
}

.hint code {
  font-size: 0.84rem;
  color: var(--bs-accent);
  background: var(--bs-accent-soft);
}

.install-note {
  margin: 22px 2px 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--bs-text-secondary);
}

.install-note strong { color: var(--bs-foreground); }

/* ============ 特性卡片 ============ */
.features { padding: 70px 24px; }

.feature-grid {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bs-card);
  border: 1px solid var(--bs-border);
  border-radius: var(--bs-radius-md);
  padding: 26px 24px;
  box-shadow: var(--bs-shadow-sm);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--bs-accent);
  box-shadow: var(--bs-shadow-md);
}

.feature-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bs-accent-soft);
  color: var(--bs-accent);
  margin-bottom: 16px;
}

.feature-icon svg { width: 26px; height: 26px; }

.feature-title {
  margin: 0 0 8px;
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--bs-foreground);
}

.feature-desc {
  margin: 0;
  color: var(--bs-text-secondary);
  font-size: 0.94rem;
}

.feature-desc code {
  font-size: 0.85em;
  background: var(--bs-accent-soft);
  color: var(--bs-accent);
}

/* ============ 支持系统 ============ */
.systems { padding: 70px 24px; }

.sys-group {
  max-width: var(--maxw);
  margin: 0 auto 26px;
}

.sys-group:last-child { margin-bottom: 0; }

.sys-group-title {
  font-size: 0.95rem;
  color: var(--bs-text-secondary);
  margin: 0 0 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.sys-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sys-badge {
  font-size: 0.9rem;
  padding: 8px 16px;
  border-radius: var(--bs-radius-full);
  border: 1px solid var(--bs-border);
  background: var(--bs-muted);
  color: var(--bs-text-secondary);
  transition: border-color 0.18s ease, color 0.18s ease;
}

.sys-badge:hover { border-color: var(--bs-accent); color: var(--bs-accent); }

/* ============ 参数表 ============ */
.params { padding: 70px 24px; }

.table-wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  border: 1px solid var(--bs-border);
  border-radius: var(--bs-radius-md);
  overflow: hidden;
  background: var(--bs-card);
  box-shadow: var(--bs-shadow-sm);
}

.params-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.94rem;
}

.params-table thead th {
  text-align: left;
  padding: 14px 20px;
  background: var(--bs-muted);
  color: var(--bs-text-secondary);
  font-weight: 700;
  border-bottom: 1px solid var(--bs-border);
}

.params-table tbody td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--bs-border);
  color: var(--bs-foreground);
  vertical-align: top;
}

.params-table tbody tr:last-child td { border-bottom: none; }

.params-table tbody td:first-child {
  white-space: nowrap;
  width: 30%;
}

.params-table tbody td code {
  font-family: var(--bs-font-mono);
  font-size: 0.88rem;
  color: var(--bs-accent);
  background: var(--bs-accent-soft);
}

/* ============ 页脚 ============ */
.footer {
  border-top: 1px solid var(--bs-border);
  background: var(--bs-muted);
  padding: 44px 24px;
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  text-align: center;
}

.footer-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--bs-foreground);
  margin-bottom: 12px;
}

.footer-license { color: var(--bs-text-secondary); margin: 0 0 8px; font-size: 0.92rem; }
.footer-license strong { color: var(--bs-foreground); }

.footer-disclaimer {
  color: var(--bs-text-muted);
  font-size: 0.84rem;
  margin: 0 0 16px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.footer-thanks {
  color: var(--bs-text-muted);
  font-size: 12px;
  margin: 6px 0 0;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.footer-thanks a {
  color: var(--bs-text-muted);
  text-decoration: none;
  transition: color 0.18s ease;
}

.footer-thanks a:hover { color: var(--bs-text-secondary); }

.footer-notice {
  color: var(--bs-text-muted);
  font-size: 12px;
  margin: 6px 0 0;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.footer-notice a {
  color: var(--bs-text-muted);
  text-decoration: none;
  transition: color 0.18s ease;
}

.footer-notice a:hover { color: var(--bs-text-secondary); }

.footer-github {
  display: inline-block;
  padding: 8px 20px;
  border-radius: var(--bs-radius-full);
  border: 1px solid var(--bs-border);
  color: var(--bs-accent);
  font-size: 0.9rem;
  background: var(--bs-card);
  transition: border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.footer-github:hover {
  border-color: var(--bs-accent);
  box-shadow: var(--bs-shadow-sm);
}

/* ============ 响应式 ============ */
@media (max-width: 900px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bs-glass-bg);
    backdrop-filter: blur(var(--bs-glass-blur));
    -webkit-backdrop-filter: blur(var(--bs-glass-blur));
    border-bottom: var(--bs-glass-border);
    box-shadow: var(--bs-glass-shadow);
    padding: 8px 16px 16px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.28s ease;
  }

  .nav-links.open { max-height: 360px; }

  .nav-links a {
    padding: 12px 6px;
    border-bottom: 1px solid var(--bs-border);
  }

  .nav-links a:last-child { border-bottom: none; }

  .feature-grid { grid-template-columns: 1fr; }

  .hero { padding: 64px 20px 60px; }

  .install-card { padding: 24px 18px; }

  .params-table tbody td:first-child { width: auto; white-space: normal; }

  .table-wrap { overflow-x: auto; }
}