/* =========================================================
   DeepSeek Harness 绿色版发布页 · 蓝色未来科技感主题 v2
   深空蓝底 + 青蓝霓虹渐变 + 玻璃拟态 + 多层动效（水波/粒子/扫描光）
   ========================================================= */

:root {
  --bg-deep: #030617;       /* 最深底 */
  --bg-mid: #071029;        /* 中层蓝 */
  --bg-soft: #0b1a3a;       /* 较亮蓝 */
  --panel: rgba(20, 40, 80, 0.35);
  --panel-strong: rgba(30, 60, 120, 0.45);
  --border: rgba(100, 180, 255, 0.18);
  --border-glow: rgba(80, 180, 255, 0.45);
  --text: #e8f0ff;
  --muted: #8fa4c8;
  --accent: #39d3ff;        /* 青 */
  --accent-2: #4a9eff;      /* 蓝 */
  --accent-3: #9a6bff;      /* 紫（点缀） */
  --glow: 0 0 28px rgba(57, 211, 255, 0.45);
  --glow-soft: 0 0 18px rgba(74, 158, 255, 0.3);
  --radius: 16px;
  --maxw: 1080px;
  --font-sans: system-ui, -apple-system, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "SF Mono", Consolas, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* =========================================================
   背景层：多层渐变 + 网格 + 粒子 + 扫描光 + 水纹Canvas
   层级（从下到上）：
   z-index -5: bg-gradient (基础深空蓝渐变)
   z-index -4: bg-aurora (光晕团)
   z-index -3: bg-grid (网格)
   z-index -2: particles-canvas (粒子)
   z-index -1: water-background (水纹)
   z-index  0: scan-light (扫描光)
   z-index  5+: 内容
   ========================================================= */

/* 1. 基础深空蓝渐变 */
.bg-gradient {
  position: fixed;
  inset: 0;
  z-index: -5;
  background:
    radial-gradient(ellipse at top, #0c1e4a 0%, #050a1f 45%, #020410 100%);
}

/* 2. 光晕团（极光感） */
.bg-aurora {
  position: fixed;
  inset: 0;
  z-index: -4;
  background:
    radial-gradient(55% 45% at 12% 8%, rgba(57, 211, 255, 0.22), transparent 65%),
    radial-gradient(45% 40% at 88% 15%, rgba(74, 158, 255, 0.20), transparent 65%),
    radial-gradient(50% 45% at 50% 100%, rgba(57, 211, 255, 0.12), transparent 70%),
    radial-gradient(30% 25% at 25% 60%, rgba(154, 107, 255, 0.10), transparent 60%);
  animation: auroraDrift 18s ease-in-out infinite alternate;
}
@keyframes auroraDrift {
  0%   { transform: translate(0, 0) scale(1); opacity: 0.9; }
  50%  { transform: translate(2%, -1%) scale(1.05); opacity: 1; }
  100% { transform: translate(-2%, 1%) scale(1.02); opacity: 0.95; }
}

/* 3. 网格线（带呼吸动效） */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -3;
  background-image:
    linear-gradient(rgba(80, 160, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(80, 160, 255, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image:
    radial-gradient(ellipse at center, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.3) 75%, transparent 100%);
  -webkit-mask-image:
    radial-gradient(ellipse at center, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.3) 75%, transparent 100%);
  animation: gridPulse 6s ease-in-out infinite;
}
@keyframes gridPulse {
  0%, 100% { opacity: 0.7; }
  50%      { opacity: 1; }
}

/* 粒子Canvas */
#particles-canvas {
  position: fixed;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* 水纹Canvas */
#water-background {
  position: fixed;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.6;
}

/* 4. 扫描光效（从上到下缓慢扫过） */
.scan-light {
  position: fixed;
  left: 0;
  right: 0;
  top: -10%;
  height: 30%;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(57, 211, 255, 0.04) 40%,
    rgba(57, 211, 255, 0.08) 50%,
    rgba(57, 211, 255, 0.04) 60%,
    transparent 100%
  );
  animation: scanDown 12s linear infinite;
}
@keyframes scanDown {
  0%   { transform: translateY(-20vh); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { transform: translateY(120vh); opacity: 0; }
}

/* 主体内容抬升 */
main, .footer { position: relative; z-index: 5; }

/* ---- 顶部导航 ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px max(20px, calc((100vw - var(--maxw)) / 2));
  background: rgba(7, 16, 41, 0.72);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}
.brand-glyph {
  color: var(--accent);
  text-shadow: var(--glow);
  font-size: 18px;
  animation: glyphPulse 3s ease-in-out infinite;
}
@keyframes glyphPulse {
  0%, 100% { text-shadow: 0 0 12px rgba(57, 211, 255, 0.5); }
  50%      { text-shadow: 0 0 24px rgba(57, 211, 255, 0.8), 0 0 40px rgba(74, 158, 255, 0.4); }
}
.nav-links {
  display: flex;
  gap: 22px;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.2s, text-shadow 0.2s;
  position: relative;
}
.nav-links a:hover { color: var(--accent); text-shadow: var(--glow-soft); }
.nav-links a.active { color: var(--accent); text-shadow: var(--glow-soft); }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  box-shadow: var(--glow);
}

/* ---- Hero ---- */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 88px 20px 56px;
  text-align: center;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(57, 211, 255, 0.18), transparent 70%);
  filter: blur(30px);
  z-index: -1;
  animation: heroGlow 5s ease-in-out infinite alternate;
}
@keyframes heroGlow {
  0%   { opacity: 0.6; transform: translateX(-50%) scale(1); }
  100% { opacity: 1; transform: translateX(-50%) scale(1.1); }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(20, 50, 100, 0.35);
  backdrop-filter: blur(8px);
  color: var(--muted);
  font-size: 13px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05), var(--glow-soft);
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent), 0 0 20px rgba(57, 211, 255, 0.5);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}
.hero-title {
  margin: 26px 0 18px;
  font-size: clamp(30px, 5.2vw, 52px);
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: -0.5px;
  text-shadow: 0 2px 20px rgba(57, 211, 255, 0.2);
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-2) 50%, var(--accent-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  background-size: 200% 200%;
  animation: gradientShift 6s ease infinite;
}
@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}
.hero-sub {
  max-width: 640px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 17px;
}

/* 终端卡片 */
.terminal {
  max-width: 560px;
  margin: 34px auto;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(8, 14, 32, 0.85);
  box-shadow: 0 20px 60px rgba(0, 20, 60, 0.5), 0 0 40px rgba(57, 211, 255, 0.08);
  overflow: hidden;
  backdrop-filter: blur(10px);
  position: relative;
}
.terminal::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  padding: 1px;
  background: linear-gradient(135deg, rgba(57, 211, 255, 0.4), transparent 50%, rgba(154, 107, 255, 0.3));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--border);
}
.dot { width: 11px; height: 11px; border-radius: 50%; }
.dot-red { background: #ff5f57; }
.dot-yellow { background: #febc2e; }
.dot-green { background: #28c840; }
.terminal-title {
  margin-left: 8px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 13px;
}
.terminal-body {
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: #cdd6e9;
}
.terminal-body p { margin: 6px 0; }
.prompt { color: var(--accent); }
.cmd { color: var(--accent-3); }
.ok { color: #4ade80; }

/* CTA */
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 8px; }
.hero-meta { margin-top: 20px; color: var(--muted); font-size: 14px; }
.inline-link { color: var(--accent); text-decoration: none; transition: text-shadow 0.2s; }
.inline-link:hover { text-decoration: underline; text-shadow: var(--glow-soft); }
.version-chip {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 6px;
  background: linear-gradient(90deg, rgba(57,211,255,0.18), rgba(74, 158, 255, 0.18));
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 10px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.15s, box-shadow 0.2s, border-color 0.2s;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: "";
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s;
}
.btn:hover::before { left: 100%; }
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  color: #04121a;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 4px 20px rgba(57, 211, 255, 0.4), 0 0 0 1px rgba(57, 211, 255, 0.3);
}
.btn-primary:hover {
  box-shadow: 0 6px 28px rgba(57, 211, 255, 0.55), 0 0 0 1px rgba(57, 211, 255, 0.5);
}
.btn-ghost {
  color: var(--text);
  border: 1px solid var(--border);
  background: rgba(20, 45, 90, 0.3);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  border-color: var(--border-glow);
  box-shadow: inset 0 0 0 1px rgba(57, 211, 255, 0.3), 0 0 20px rgba(57, 211, 255, 0.15);
}
.btn-lg { padding: 15px 26px; font-size: 16px; }

/* ---- 通用 section ---- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 64px 20px;
}
.section-title {
  text-align: center;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 800;
  margin-bottom: 8px;
}
.section-title::after {
  content: "";
  display: block;
  width: 60%;
  height: 2px;
  margin: 10px auto 0;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  box-shadow: 0 0 10px rgba(57, 211, 255, 0.5);
}
.section-sub {
  text-align: center;
  color: var(--muted);
  margin-bottom: 36px;
}

/* ---- 特性 / 插件卡片 ---- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.card, .plugin-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 24px;
  backdrop-filter: blur(10px) saturate(1.3);
  -webkit-backdrop-filter: blur(10px) saturate(1.3);
  transition: transform 0.25s, border-color 0.25s, background 0.25s, box-shadow 0.25s;
  position: relative;
  overflow: hidden;
}
.card::before, .plugin-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(57, 211, 255, 0.6), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.card:hover, .plugin-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  background: var(--panel-strong);
  box-shadow: 0 8px 32px rgba(0, 30, 80, 0.4), 0 0 0 1px rgba(57, 211, 255, 0.15);
}
.card:hover::before, .plugin-card:hover::before {
  opacity: 1;
}
.card-icon {
  font-size: 30px;
  margin-bottom: 12px;
  filter: drop-shadow(0 0 8px rgba(57, 211, 255, 0.4));
}
.card h3, .plugin-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--text);
}
.card p, .plugin-card p { color: var(--muted); font-size: 14.5px; }

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

/* ---- 下载面板 ---- */
.download-panel {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(57,211,255,0.10), rgba(74, 158, 255, 0.08) 50%, rgba(154,107,255,0.10));
  padding: 32px;
  align-items: center;
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 40px rgba(0, 20, 60, 0.3), inset 0 1px 0 rgba(255,255,255,0.05);
  position: relative;
  overflow: hidden;
}
.download-panel::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(57, 211, 255, 0.15), transparent 70%);
  pointer-events: none;
}
.dl-version { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.dl-date { color: var(--muted); }
.dl-desc { color: var(--muted); margin-bottom: 12px; }
.dl-points { list-style: none; }
.dl-points li {
  position: relative;
  padding-left: 22px;
  color: var(--muted);
  font-size: 14px;
  margin: 6px 0;
}
.dl-points li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
  text-shadow: 0 0 8px rgba(57, 211, 255, 0.5);
}
.download-right { display: flex; flex-direction: column; gap: 14px; }
.dl-links { display: flex; gap: 18px; justify-content: center; }
.dl-links a { color: var(--muted); font-size: 14px; transition: color 0.2s, text-shadow 0.2s; }
.dl-links a:hover { color: var(--accent); text-shadow: var(--glow-soft); }

/* ---- 快速上手 ---- */
.steps {
  max-width: 640px;
  margin: 0 auto;
  padding: 28px 32px 28px 44px;
  color: #c3d0e8;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  backdrop-filter: blur(10px) saturate(1.3);
  -webkit-backdrop-filter: blur(10px) saturate(1.3);
  box-shadow: 0 8px 32px rgba(0, 30, 80, 0.25), inset 0 1px 0 rgba(255,255,255,0.05);
  position: relative;
  overflow: hidden;
}
.steps::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(57, 211, 255, 0.5), transparent);
}
.steps li { margin: 12px 0; }
.steps strong { color: var(--text); }
.steps code {
  font-family: var(--font-mono);
  color: var(--accent);
  background: rgba(57, 211, 255, 0.08);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid rgba(57, 211, 255, 0.15);
}

/* ---- FAQ ---- */
.faq { max-width: 720px; margin: 0 auto; }
.faq details {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  margin-bottom: 12px;
  padding: 14px 18px;
  backdrop-filter: blur(8px);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.faq details[open] {
  border-color: var(--border-glow);
  box-shadow: 0 4px 20px rgba(0, 20, 60, 0.3);
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  transition: color 0.2s;
}
.faq summary:hover { color: var(--accent); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  float: right;
  color: var(--accent);
  font-size: 18px;
  text-shadow: var(--glow-soft);
  transition: transform 0.2s;
}
.faq details[open] summary::after { content: "–"; transform: rotate(180deg); }
.faq p { color: var(--muted); font-size: 14.5px; margin-top: 10px; }

/* ---- 页脚 ---- */
.footer {
  border-top: 1px solid var(--border);
  padding: 34px 20px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  background: linear-gradient(to top, rgba(7, 16, 41, 0.6), transparent);
  backdrop-filter: blur(6px);
}
.footer p { margin: 6px 0; }
.footer-note { font-size: 13px; color: #6b7fa3; }
.footer-legal { margin-top: 10px; font-size: 13px; }
.footer-legal a { color: #8aa8d6; margin: 0 8px; text-decoration: none; }
.footer-legal a:hover { color: #c5d7f2; text-decoration: underline; }

/* Ad slots — invisible placeholder while not serving ads.
   Keep width/margin/align so the container reserves layout space and
   Mediapartners-Google crawler can see it (never use display:none!).
   After AdSense approval, replace border/background with whatever
   matches the approved ad <ins> tag's natural styling. */
.ad-slot {
  width: 100%;
  max-width: 728px;
  margin: 28px auto;
  text-align: center;
  min-height: 90px;
}
.ad-slot-wide { max-width: 728px; } 
.ad-slot-rect  { max-width: 336px; } 

/* ---- 语言切换器 (导航栏右侧或 footer 底部) ---- */
.lang-switcher {
  display: inline-flex;
  gap: 6px;
  align-items: center;
}
.lang-switcher a {
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 500;
  color: #8aa8d6;
  text-decoration: none;
  border: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.lang-switcher a:hover { color: #c5d7f2; border-color: rgba(138, 168, 214, 0.4); }
.lang-switcher a.active {
  color: #e3ecff;
  border-color: rgba(138, 168, 214, 0.6);
  background: rgba(138, 168, 214, 0.12);
}
/* 导航栏内语言切换: 与 nav-links 视觉对齐 */
.nav-lang-switcher { margin-left: auto; }

/* ---- 法律/合规内容页 (About / Privacy) ---- */
.legal-page {
  max-width: 720px;
  margin: 60px auto;
  padding: 0 24px;
}
.legal-page h1 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 20px;
  background: linear-gradient(90deg, #6cd5ff, #9a6bf2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.legal-page h2 {
  font-size: 18px;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
  color: #e3ecff;
}
.legal-page p {
  font-size: 15px;
  line-height: 1.75;
  color: #b3c5e0;
  margin-bottom: 12px;
}
.legal-page ul {
  margin: 10px 0 14px 22px;
  padding-left: 0;
  list-style: disc;
  color: #b3c5e0;
}
.legal-page li {
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 6px;
}
.legal-page a { color: #8aa8d6; }
.legal-page a:hover { color: #c5d7f2; text-decoration: underline; }
.legal-page .back-link {
  display: inline-block;
  margin-top: 24px;
  font-size: 14px;
}

/* ---- 淡入动效 ---- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---- 响应式 ---- */
@media (max-width: 720px) {
  .nav { flex-direction: column; gap: 10px; padding-top: 12px; }
  .nav-links { flex-wrap: wrap; justify-content: center; gap: 14px; }
  .download-panel { grid-template-columns: 1fr; padding: 22px; }
  .hero { padding-top: 56px; }
  .hero::before { width: 300px; height: 200px; }
  .scan-light { display: none; }
  .steps { padding: 22px 22px 22px 36px; }
}