/* ===== HMCL启动器下载 · 全局样式 ===== */
:root {
  --bg: #131024;
  --bg-soft: #1E1B3F;
  --card: #262052;
  --line: #3B3468;
  --text: #EDEBFA;
  --muted: #A5A0D6;
  --accent: #8B5CF6;
  --accent-2: #6366F1;
  --grad: linear-gradient(135deg, #8B5CF6, #6366F1);
  --radius: 16px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 820px; }
.center { text-align: center; }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(19, 16, 36, 0.78);
  border-bottom: 1px solid var(--line);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); font-size: 20px; font-weight: 700; letter-spacing: 0.5px; }
.brand em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav { display: flex; gap: 28px; }
.nav a { color: var(--muted); text-decoration: none; font-size: 15px; transition: color .2s; }
.nav a:hover { color: var(--text); }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 88px 0 72px;
  background:
    radial-gradient(600px 300px at 15% 10%, rgba(139, 92, 246, .18), transparent 70%),
    radial-gradient(500px 280px at 85% 20%, rgba(99, 102, 241, .12), transparent 70%),
    var(--bg);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(59, 52, 104, .28) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 52, 104, .28) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 40% 0%, #000 30%, transparent 75%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}
.badge {
  display: inline-block;
  font-size: 13px;
  color: #C7D2FE;
  border: 1px solid rgba(99, 102, 241, .4);
  background: rgba(99, 102, 241, .1);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}
h1 { font-size: 44px; line-height: 1.25; font-weight: 800; letter-spacing: 1px; }
h1 .sub {
  display: block;
  margin-top: 10px;
  font-size: 20px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0;
}
.lead { margin: 22px 0 30px; color: var(--muted); font-size: 16.5px; }

.cta-row { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: transform .15s, box-shadow .2s, background .2s;
}
.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 8px 24px rgba(139, 92, 246, .35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(139, 92, 246, .45); }
.btn-ghost { border: 1px solid var(--line); color: var(--text); background: rgba(38, 32, 82, .5); }
.btn-ghost:hover { border-color: var(--accent); }
.btn-lg { padding: 16px 44px; font-size: 18px; }

.hero-stats { display: flex; gap: 40px; list-style: none; margin-top: 38px; }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 22px; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-stats span { font-size: 13px; color: var(--muted); }

.hero-figure img {
  border-radius: 18px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, .55), 0 0 0 1px var(--line);
}

/* ===== 通用区块 ===== */
.section { padding: 76px 0; }
.section.alt { background: var(--bg-soft); }
h2 { font-size: 30px; font-weight: 700; margin-bottom: 26px; position: relative; padding-left: 18px; }
h2::before {
  content: "";
  position: absolute; left: 0; top: 8px;
  width: 5px; height: 26px;
  border-radius: 3px;
  background: var(--grad);
}
h3 { font-size: 19px; font-weight: 600; margin: 22px 0 8px; color: var(--text); }
h4 { font-size: 16px; font-weight: 600; margin-bottom: 6px; color: #C7D2FE; }
.section p { color: var(--muted); font-size: 15.5px; }

/* ===== 功能卡片 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 12px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform .2s, border-color .2s;
}
.card:hover { transform: translateY(-4px); border-color: var(--accent); }
.card img { border-radius: 12px; margin-bottom: 6px; }
.card h3 { margin-top: 14px; }
.card-text { display: flex; flex-direction: column; justify-content: center; }

/* ===== 安装步骤 ===== */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 16px; counter-reset: step; }
.step {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  position: relative;
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute; top: 16px; right: 18px;
  font-size: 30px; font-weight: 800;
  color: rgba(139, 92, 246, .25);
}

/* ===== 下载 CTA ===== */
.download-cta {
  background:
    radial-gradient(500px 240px at 50% 0%, rgba(139, 92, 246, .2), transparent 70%),
    var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.download-cta h2 { padding-left: 0; }
.download-cta h2::before { display: none; }
.download-cta p { margin-bottom: 26px; }

/* ===== 页脚 ===== */
.site-footer { padding: 34px 0; text-align: center; }
.site-footer p { color: #6A63A8; font-size: 13.5px; }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  h1 { font-size: 34px; }
  .feature-grid, .steps { grid-template-columns: 1fr; }
  .nav { display: none; }
  .hero { padding: 60px 0 48px; }
  .section { padding: 56px 0; }
}