/* ============================================================
   GUUI 0.0.8.1 官网 — 梦幻蓝虎皮鹦鹉奇幻风
   品牌蓝 #1E88E5 · 蓝白 + 梦幻紫 / 幽蓝 / 银白
   ============================================================ */

:root {
  --brand-blue: #1E88E5;
  --brand-blue-dark: #1565C0;
  --brand-blue-light: #42A5F5;
  --dream-purple: #7C4DFF;
  --dream-purple-light: #B388FF;
  --deep-blue: #0D2B4E;
  --teal: #00BCD4;
  --teal-light: #80DEEA;
  --silver: #E3EAF3;
  --white: #FFFFFF;
  --ink: #0F2A44;
  --ink-soft: #4A6A8A;
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.55);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 12px;
  --shadow-soft: 0 18px 50px rgba(13, 43, 78, 0.14);
  --shadow-blue: 0 12px 32px rgba(30, 136, 229, 0.28);
  --font: "PingFang SC", "Microsoft YaHei", "Segoe UI", -apple-system, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(124, 77, 255, 0.16), transparent 60%),
    radial-gradient(1000px 500px at 0% 10%, rgba(0, 188, 212, 0.12), transparent 55%),
    linear-gradient(180deg, #F6FAFF 0%, #EEF4FD 45%, #E8EEF9 100%);
  line-height: 1.7;
  overflow-x: hidden;
}

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

/* ---------- 通用 ---------- */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.gradient-text {
  background: linear-gradient(120deg, var(--brand-blue) 0%, var(--dream-purple) 55%, var(--teal) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.section { padding: 110px 24px; max-width: 1180px; margin: 0 auto; }

.section-alt { background: rgba(255, 255, 255, 0.45); }

.section-head { text-align: center; margin-bottom: 64px; }

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--brand-blue);
  font-weight: 700;
  padding: 6px 18px;
  border: 1px solid rgba(30, 136, 229, 0.35);
  border-radius: 999px;
  background: rgba(30, 136, 229, 0.08);
  margin-bottom: 18px;
}

.section-title {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--ink);
}

.section-desc { color: var(--ink-soft); font-size: 17px; margin-top: 12px; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  border: none;
  border-bottom: 1px solid rgba(30, 136, 229, 0.10);
  background: rgba(255, 255, 255, 0.65);
  transition: box-shadow 0.3s, background 0.3s;
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 8px 30px rgba(13, 43, 78, 0.08);
}

.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.brand-dot {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-blue), var(--dream-purple));
  box-shadow: 0 0 14px rgba(30, 136, 229, 0.55);
}

.brand-text { font-size: 22px; font-weight: 800; letter-spacing: 1px; }

.brand-ver {
  font-size: 12px;
  color: var(--white);
  background: linear-gradient(120deg, var(--brand-blue), var(--dream-purple));
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 700;
}

.nav-links { display: flex; align-items: center; gap: 30px; }

.nav-links a:not(.nav-cta) { font-size: 15px; font-weight: 600; color: var(--ink-soft); transition: color 0.2s; }
.nav-links a:not(.nav-cta):hover { color: var(--brand-blue); }

.nav-cta {
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  background: linear-gradient(120deg, var(--brand-blue), var(--dream-purple));
  padding: 9px 20px;
  border-radius: 999px;
  box-shadow: var(--shadow-blue);
  transition: transform 0.2s, box-shadow 0.2s;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(30, 136, 229, 0.36); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 160px 24px 100px;
  overflow: hidden;
}

.hero-bg { position: absolute; inset: 0; pointer-events: none; }

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  animation: float 9s ease-in-out infinite;
}
.orb-1 { width: 420px; height: 420px; top: -80px; right: -60px; background: radial-gradient(circle, rgba(66, 165, 245, 0.75), rgba(30, 136, 229, 0.15)); }
.orb-2 { width: 380px; height: 380px; bottom: -100px; left: -80px; background: radial-gradient(circle, rgba(124, 77, 255, 0.70), rgba(124, 77, 255, 0.10)); animation-delay: -3s; }
.orb-3 { width: 260px; height: 260px; top: 40%; left: 55%; background: radial-gradient(circle, rgba(0, 188, 212, 0.60), rgba(0, 188, 212, 0.08)); animation-delay: -6s; }

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.feather {
  position: absolute;
  font-size: 120px;
  opacity: 0.10;
  color: var(--brand-blue);
  animation: drift 14s ease-in-out infinite;
}
.feather-1 { top: 18%; left: 8%; transform: rotate(-18deg); }
.feather-2 { bottom: 16%; right: 10%; transform: rotate(24deg); animation-delay: -5s; color: var(--dream-purple); }

@keyframes drift {
  0%, 100% { transform: rotate(-18deg) translateY(0); }
  50% { transform: rotate(-10deg) translateY(-22px); }
}

.hero-inner { position: relative; z-index: 2; max-width: 860px; }

.hero-eyebrow {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 3px;
  color: var(--ink-soft);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  padding: 8px 22px;
  border-radius: 999px;
  margin-bottom: 30px;
}

.hero-title {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: 1px;
  color: var(--ink);
  text-shadow: 0 20px 60px rgba(30, 136, 229, 0.18);
  margin-bottom: 26px;
}

.hero-sub {
  font-size: clamp(16px, 2.2vw, 20px);
  color: var(--ink-soft);
  max-width: 640px;
  margin: 0 auto 38px;
}

.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 44px; }

.btn {
  display: inline-block;
  font-size: 16px;
  font-weight: 700;
  padding: 14px 34px;
  border-radius: 999px;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn-primary {
  color: var(--white);
  background: linear-gradient(120deg, var(--brand-blue) 0%, var(--dream-purple) 100%);
  box-shadow: var(--shadow-blue);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 20px 44px rgba(30, 136, 229, 0.40); }

.btn-ghost {
  color: var(--brand-blue-dark);
  background: rgba(255, 255, 255, 0.75);
  border: 1.5px solid rgba(30, 136, 229, 0.40);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { transform: translateY(-3px); background: rgba(255, 255, 255, 0.95); border-color: var(--brand-blue); }

.btn-lg { padding: 17px 42px; font-size: 17px; }

.hero-meta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.pill {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(30, 136, 229, 0.18);
}

/* ---------- 多机型支持 ---------- */
.devices-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.device-card {
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  text-align: center;
  transition: transform 0.28s, box-shadow 0.28s;
}

.device-card:hover { transform: translateY(-8px); box-shadow: 0 26px 60px rgba(13, 43, 78, 0.18); }

.device-icon {
  width: 58px; height: 58px;
  margin: 0 auto 18px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  border-radius: 16px;
  color: var(--white);
  box-shadow: 0 10px 24px rgba(30, 136, 229, 0.24);
}
.ic-blue { background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-light)); }
.ic-purple { background: linear-gradient(135deg, var(--dream-purple), var(--dream-purple-light)); }
.ic-teal { background: linear-gradient(135deg, var(--teal), var(--teal-light)); }
.ic-silver { background: linear-gradient(135deg, #8AA5C8, var(--silver)); color: var(--ink); }

.device-card h3 { font-size: 19px; font-weight: 800; margin-bottom: 8px; }
.device-card p { color: var(--ink-soft); font-size: 15px; margin-bottom: 14px; }

.device-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--brand-blue-dark);
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(30, 136, 229, 0.10);
  border: 1px solid rgba(30, 136, 229, 0.20);
}

/* ---------- 特性卡片 ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 26px;
}

.feature-card {
  padding: 34px 30px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  transition: transform 0.28s, box-shadow 0.28s;
}

.feature-card:hover { transform: translateY(-8px); box-shadow: 0 26px 60px rgba(13, 43, 78, 0.18); }

.feature-icon {
  width: 58px; height: 58px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  border-radius: 16px;
  margin-bottom: 20px;
  color: var(--white);
  box-shadow: 0 10px 24px rgba(30, 136, 229, 0.24);
}

.feature-card h3 { font-size: 20px; font-weight: 800; margin-bottom: 10px; }
.feature-card p { color: var(--ink-soft); font-size: 15px; }

/* ---------- 版本信息 ---------- */
.release-card {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 40px;
  padding: 48px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.release-badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--white);
  background: linear-gradient(120deg, var(--brand-blue), var(--dream-purple));
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.release-name { font-size: clamp(30px, 4vw, 40px); font-weight: 800; margin-bottom: 10px; }
.release-desc { color: var(--ink-soft); font-size: 16px; margin-bottom: 24px; }

.release-list { list-style: none; display: grid; gap: 12px; }
.release-list li {
  position: relative;
  padding-left: 30px;
  color: var(--ink);
  font-size: 15.5px;
}
.release-list li::before {
  content: "✓";
  position: absolute; left: 0; top: 0;
  width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
  color: var(--white);
  background: linear-gradient(135deg, var(--brand-blue), var(--dream-purple));
  border-radius: 50%;
}

.release-right { display: flex; align-items: center; justify-content: center; }

.download-box {
  width: 100%;
  max-width: 380px;
  text-align: center;
  padding: 40px 30px;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(30, 136, 229, 0.10), rgba(124, 77, 255, 0.10));
  border: 1px solid rgba(30, 136, 229, 0.20);
}

.download-hint { font-size: 14px; color: var(--ink-soft); margin-bottom: 22px; }

.download-note { margin-top: 18px; font-size: 13px; color: var(--ink-soft); line-height: 1.9; }
.download-note a { color: var(--brand-blue); font-weight: 700; }
.download-note a:hover { text-decoration: underline; }

/* ---------- 关于工作室 ---------- */
.studio-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  padding: 48px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  align-items: center;
}

.studio-logo {
  width: 220px; height: 220px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 25%, rgba(66, 165, 245, 0.90), rgba(13, 43, 78, 0.92) 70%);
  box-shadow: 0 20px 50px rgba(30, 136, 229, 0.35);
}
.studio-bird { font-size: 96px; filter: drop-shadow(0 12px 20px rgba(0, 0, 0, 0.25)); }

.studio-body h3 { font-size: 30px; font-weight: 800; margin-bottom: 16px; }
.studio-body p { color: var(--ink-soft); font-size: 16px; margin-bottom: 14px; }

.studio-links { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 24px; }
.studio-links .btn-ghost { font-size: 14px; padding: 11px 22px; }

/* ---------- 页脚 ---------- */
.footer {
  margin-top: 40px;
  padding: 64px 24px 36px;
  background: linear-gradient(160deg, var(--deep-blue) 0%, #0A2040 60%, #081830 100%);
  color: rgba(255, 255, 255, 0.80);
  text-align: center;
}

.footer-inner { max-width: 1180px; margin: 0 auto; }

.footer-brand { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 16px; }
.footer-brand .brand-dot { box-shadow: 0 0 16px rgba(66, 165, 245, 0.7); }
.footer-brand .brand-text { color: var(--white); font-size: 26px; }

.footer-slogan {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.62);
  margin-bottom: 22px;
  background: linear-gradient(120deg, var(--teal-light), var(--dream-purple-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-links { display: flex; gap: 12px; justify-content: center; align-items: center; flex-wrap: wrap; margin-bottom: 22px; }
.footer-links a { color: rgba(255, 255, 255, 0.85); font-size: 14px; font-weight: 600; }
.footer-links a:hover { color: var(--brand-blue-light); }
.footer-sep { color: rgba(255, 255, 255, 0.35); }

.footer-copy { font-size: 13px; color: rgba(255, 255, 255, 0.42); }

/* ---------- 滚动出现动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .nav-links { gap: 16px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .release-card { grid-template-columns: 1fr; padding: 32px 24px; }
  .studio-card { grid-template-columns: 1fr; padding: 32px 24px; justify-items: center; text-align: center; }
  .studio-links { justify-content: center; }
  .section { padding: 80px 20px; }
  .hero { padding: 130px 20px 80px; }
}