/* ============================================================
   MapLife 介绍站 · 共享样式
   蓝 / 橙 / 紫渐变 + 毛玻璃 · 响应式（桌面双栏 / 手机单栏）
   ============================================================ */

:root {
  --blue: #3b82f6;
  --orange: #f97316;
  --purple: #8b5cf6;
  --grad: linear-gradient(120deg, #3b82f6 0%, #6366f1 45%, #8b5cf6 100%);
  --grad-warm: linear-gradient(120deg, #f97316 0%, #f59e0b 100%);
  --bg: #070912;
  --bg-soft: #0d1020;
  --card: rgba(255, 255, 255, 0.045);
  --card-border: rgba(255, 255, 255, 0.10);
  --text: #e9ebf5;
  --muted: #9aa1bb;
  --muted-2: #6c7392;
  --radius: 18px;
  --maxw: 1180px;
  --shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.7);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 背景光斑 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(60vw 60vw at 12% -8%, rgba(59, 130, 246, 0.22), transparent 60%),
    radial-gradient(55vw 55vw at 100% 8%, rgba(139, 92, 246, 0.20), transparent 60%),
    radial-gradient(50vw 50vw at 50% 110%, rgba(249, 115, 22, 0.14), transparent 60%);
  pointer-events: none;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40'%3E%3Cpath d='M0 .5H40M.5 0V40' fill='none' stroke='rgba(255,255,255,0.025)'/%3E%3C/svg%3E");
  pointer-events: none;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---------------- 顶部导航 ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px) saturate(140%);
  background: rgba(7, 9, 18, 0.65);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; letter-spacing: .2px; }
.brand .logo {
  width: 30px; height: 30px; border-radius: 9px; background: var(--grad);
  display: grid; place-items: center; box-shadow: 0 6px 18px -4px rgba(99,102,241,.7);
}
.brand .logo svg { width: 18px; height: 18px; }
.brand small { color: var(--muted); font-weight: 500; font-size: 12px; letter-spacing: 1px; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 8px 14px; border-radius: 10px; color: var(--muted); font-size: 15px;
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,.05); }
.nav-links a.active { color: #fff; background: rgba(99,102,241,.18); }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 12px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: transform .15s, box-shadow .2s, background .2s;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 12px 30px -10px rgba(99,102,241,.8); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 40px -12px rgba(99,102,241,.9); }
.btn-ghost { background: rgba(255,255,255,.05); color: var(--text); border-color: var(--card-border); }
.btn-ghost:hover { background: rgba(255,255,255,.1); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; border-radius: 2px; transition: .25s; }

/* ---------------- 通用区块 ---------------- */
section { padding: 84px 0; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--blue); margin-bottom: 14px;
}
.section-title { font-size: clamp(26px, 4vw, 40px); line-height: 1.2; font-weight: 800; letter-spacing: -.5px; }
.section-sub { color: var(--muted); font-size: 17px; max-width: 640px; margin-top: 14px; }

/* ---------------- Hero ---------------- */
.hero { padding: 70px 0 60px; position: relative; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero h1 {
  font-size: clamp(34px, 6vw, 62px); line-height: 1.08; font-weight: 850; letter-spacing: -1px;
}
.hero h1 .accent {
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead { color: var(--muted); font-size: 19px; margin: 22px 0 30px; max-width: 520px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 30px; margin-top: 40px; flex-wrap: wrap; }
.hero-stats .stat b { font-size: 26px; font-weight: 800; display: block; }
.hero-stats .stat span { color: var(--muted); font-size: 13px; }
.hero-media { position: relative; display: grid; place-items: center; }
.hero-media .glow {
  position: absolute; width: 80%; height: 80%; border-radius: 50%;
  background: radial-gradient(circle, rgba(139,92,246,.5), transparent 70%); filter: blur(40px); z-index: 0;
}
.phone {
  position: relative; z-index: 1; width: min(310px, 78%);
  border-radius: 34px; overflow: hidden;
  box-shadow: 0 40px 90px -30px rgba(0,0,0,.85), 0 0 0 1px rgba(255,255,255,.06);
  background: #000;
}
.phone img { width: 100%; height: auto; display: block; }

/* ---------------- 亮点卡片 ---------------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: 26px; backdrop-filter: blur(10px); transition: transform .2s, border-color .2s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(139,92,246,.4); }
.card .ico {
  width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center;
  background: rgba(99,102,241,.16); margin-bottom: 16px; font-size: 22px;
}
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14.5px; }

/* ---------------- 功能行（图文交替） ---------------- */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; padding: 56px 0; }
.feature--reverse .feature__media { order: -1; }
.feature__text .tag {
  display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 700;
  padding: 5px 12px; border-radius: 999px; background: rgba(99,102,241,.14); color: #c7c9ff; margin-bottom: 14px;
}
.feature__text h2 { font-size: clamp(24px, 3.4vw, 34px); font-weight: 800; letter-spacing: -.5px; }
.feature__text p { color: var(--muted); font-size: 16px; margin: 16px 0; }
.feature__text ul { list-style: none; margin-top: 8px; }
.feature__text li { position: relative; padding-left: 26px; margin: 10px 0; color: #cdd2e6; font-size: 15px; }
.feature__text li::before {
  content: ""; position: absolute; left: 0; top: 9px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--grad); box-shadow: 0 0 0 4px rgba(99,102,241,.15);
}
.feature__media { display: grid; place-items: center; position: relative; }
.feature__media .glow {
  position: absolute; width: 70%; height: 70%; border-radius: 50%;
  background: radial-gradient(circle, rgba(59,130,246,.35), transparent 70%); filter: blur(45px);
}
.shot {
  position: relative; z-index: 1; width: min(300px, 80%);
  border-radius: 30px; overflow: hidden; background: #000;
  box-shadow: 0 36px 80px -28px rgba(0,0,0,.85), 0 0 0 1px rgba(255,255,255,.06);
}
.shot img { width: 100%; height: auto; }
.shot--lg { width: min(340px, 86%); }

/* 小标注气泡 */
.bubble {
  position: absolute; z-index: 2; background: rgba(13,16,32,.85); backdrop-filter: blur(10px);
  border: 1px solid var(--card-border); border-radius: 12px; padding: 8px 12px; font-size: 12.5px;
  box-shadow: var(--shadow); max-width: 150px;
}
.bubble b { color: #fff; }
.bubble.blue { border-color: rgba(59,130,246,.5); }
.bubble.orange { border-color: rgba(249,115,22,.5); }
.bubble.purple { border-color: rgba(139,92,246,.5); }

/* ---------------- 分屏色块（模块标识） ---------------- */
.module-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin: 26px 0 6px; }
.module-tabs .mt {
  font-size: 13.5px; padding: 7px 14px; border-radius: 999px; border: 1px solid var(--card-border);
  color: var(--muted); background: rgba(255,255,255,.03);
}
.module-tabs .mt.j { color: #bfd4ff; border-color: rgba(59,130,246,.45); background: rgba(59,130,246,.12); }
.module-tabs .mt.l { color: #ffd2a8; border-color: rgba(249,115,22,.45); background: rgba(249,115,22,.12); }
.module-tabs .mt.t { color: #dcc9ff; border-color: rgba(139,92,246,.45); background: rgba(139,92,246,.12); }

/* ---------------- 页脚 ---------------- */
.site-footer { border-top: 1px solid rgba(255,255,255,.06); padding: 54px 0 36px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
.footer-grid h4 { font-size: 14px; margin-bottom: 14px; color: var(--text); }
.footer-grid a { display: block; color: var(--muted); font-size: 14px; margin: 8px 0; }
.footer-grid a:hover { color: var(--text); }
.footer-note { color: var(--muted-2); font-size: 13px; margin-top: 28px; line-height: 1.8; }
.footer-bottom { margin-top: 26px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.05); color: var(--muted-2); font-size: 13px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------------- 滚动揭示动画 ---------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in-view { opacity: 1; transform: none; }

/* 分隔标题带 */
.ribbon {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 16px; border-radius: 999px;
  background: rgba(255,255,255,.04); border: 1px solid var(--card-border); font-size: 14px; color: var(--muted);
  margin-bottom: 18px;
}
.ribbon .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--grad); }

/* ============================================================
   响应式：手机浏览方式（≤ 860px 单栏 + 抽屉菜单）
   ============================================================ */
@media (max-width: 860px) {
  .nav-links {
    position: fixed; top: 64px; right: 0; left: 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: rgba(7,9,18,.97); backdrop-filter: blur(18px);
    padding: 14px 18px 22px; border-bottom: 1px solid rgba(255,255,255,.08);
    transform: translateY(-130%); transition: transform .3s ease; pointer-events: none;
  }
  .nav-links.open { transform: none; pointer-events: auto; }
  .nav-links a { padding: 13px 14px; font-size: 16px; }
  .nav-links .btn { justify-content: center; margin-top: 8px; }
  .nav-toggle { display: block; }

  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-media { order: -1; }
  .feature { grid-template-columns: 1fr; gap: 28px; padding: 40px 0; }
  .feature--reverse .feature__media { order: 0; }
  .feature__media { order: -1; }
  .cards { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  section { padding: 60px 0; }
}

@media (max-width: 520px) {
  .hero-stats { gap: 20px; }
  .phone { width: min(260px, 72%); }
  .shot { width: min(250px, 74%); }
}