* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #000;
  --ink: #e8e8e8;
  --text: #9a9a9a;
  --muted: #5c5c5c;
  --line: #1a1a1a;
  --hit: #ffe14d;
}
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  color: var(--text);
  background: var(--bg);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%;  height: auto;filter: grayscale(.35) brightness(.72); }
.wrap { width: min(1200px, calc(100% - 40px)); margin: 0 auto; }
.nav {
  position: sticky; top: 0; z-index: 40;
  background: rgba(0,0,0,.92);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 800; }
.brand-mark {
  width: 32px; height: 32px; display: grid; place-items: center;
  border: 1px solid #333; color: var(--ink); font-weight: 900; font-size: 14px;
}
.nav-links { display: flex; gap: 28px; font-weight: 600; font-size: 14px; color: var(--muted); }
.nav-links a:hover { color: var(--ink); }
.nav-cta, .btn, .hit {
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; cursor: pointer; border: 0;
}
.hit {
  padding: 10px 22px; color: #111; background: var(--hit);
  font-size: 15px; box-shadow: 0 0 28px rgba(255, 225, 77, .35);
}
.menu-btn { display: none; border: 0; background: none; color: var(--ink); font-size: 22px; cursor: pointer; }
.mobile-panel { display: none; flex-direction: column; gap: 12px; padding: 8px 0 16px; font-weight: 600; }
.mobile-panel.open { display: flex; }
.crumb { padding: 14px 0 0; color: var(--muted); font-size: 13px; }
.hero {
  position: relative; min-height: 78vh; padding: 72px 0 0; overflow: hidden;
  color: var(--ink); text-align: center;
  background: #000 url("4.webp") center/cover no-repeat;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,.88), rgba(0,0,0,.72) 50%, #000);
}
.hero-inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; }
.hero h1 { max-width: 900px; font-size: clamp(24px, 4.2vw, 40px); line-height: 1.3; font-weight: 800; }
.hero-desc { max-width: 640px; margin-top: 18px; font-size: 16px; color: var(--text); }
.hero-cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 24px; }
.btn {
  min-width: 140px; height: 46px; padding: 0 18px; font-size: 15px;
  color: var(--muted); background: transparent; border: 1px solid #2a2a2a;
}
.btn:hover { color: var(--ink); border-color: #444; }
.hit.mega {
  margin-top: 20px; min-width: min(420px, 90%); height: 58px;
  font-size: 20px; letter-spacing: .04em;
}
.hero-shot { width: min(1100px, 100%); margin-top: 40px; }
.hero-shot img { width: 100%; border-radius: 4px 4px 0 0; }
section { padding: 80px 0; }
.head { max-width: 700px; margin: 0 auto 40px; text-align: center; }
h2 { color: var(--ink); font-size: clamp(24px, 3.2vw, 34px); font-weight: 700; }
.head p, .copy p { margin-top: 12px; color: var(--muted); }
h3 { color: var(--ink); font-size: 18px; font-weight: 700; }
.gallery { background: #050505; }
.cards-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.card { overflow: hidden; background: #0a0a0a; border: 1px solid var(--line); }
.card img { width: 100%; height: 160px; object-fit: cover; }
.card-body { padding: 16px 16px 20px; }
.card-body p { margin-top: 6px; color: var(--muted); font-size: 13px; }
.tag { display: inline-block; margin-top: 10px; color: #777; font-size: 12px; }
.more { display: block; margin-top: 28px; text-align: center; color: var(--muted); }
.zigzag { display: grid; gap: 64px; }
.row { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 48px; }
.row.reverse .media { order: 2; }
.row img { width: 100%; height: 300px; object-fit: cover; border: 1px solid var(--line); }
.text-link { display: inline-block; margin-top: 18px; color: var(--muted); border-bottom: 1px solid #333; }
.download { background: #000; text-align: center; }
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px; text-align: left; }
.dl-card { padding: 26px 22px; background: #0a0a0a; border: 1px solid var(--line); }
.dl-card .kicker { color: var(--muted); font-size: 12px; letter-spacing: .12em; }
.dl-card p { margin: 8px 0 18px; color: var(--muted); font-size: 14px; }
.dl-card .hit { width: 100%; height: 48px; }
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 48px; }
.quote { padding: 22px; background: #0a0a0a; border-top: 1px solid #222; }
.quote strong { display: block; margin-top: 14px; color: var(--text); font-weight: 600; }
.users { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-bottom: 48px; }
.user { padding: 18px 12px; border: 1px solid var(--line); text-align: center; }
.avatar {
  width: 40px; height: 40px; margin: 0 auto; display: grid; place-items: center;
  border: 1px solid #333; color: var(--ink); font-weight: 800; font-size: 13px;
}
.user b { display: block; margin: 10px 0 6px; color: var(--ink); font-size: 14px; }
.user p { color: var(--muted); font-size: 13px; }
.stars { margin-top: 8px; color: #444; font-size: 12px; }
.about {
  display: flex; align-items: center; justify-content: space-between; gap: 32px;
  padding: 32px; border: 1px solid var(--line);
}
.pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.pills span { padding: 4px 10px; border: 1px solid #222; font-size: 12px; color: var(--muted); }
.trust-nums { display: flex; gap: 28px; text-align: center; }
.trust-nums strong { display: block; color: var(--ink); font-size: 26px; }
.trust-nums span { color: var(--muted); font-size: 12px; }
footer { padding: 44px 0; background: #000; color: #444; text-align: center; border-top: 1px solid var(--line); }
footer .name { color: var(--ink); font-weight: 800; margin-bottom: 14px; }
footer nav { display: flex; justify-content: center; gap: 22px; margin-bottom: 12px; }
footer a:hover { color: var(--ink); }
@media (max-width: 960px) {
  .nav-links { display: none; }
  .menu-btn { display: block; }
  .cards-4, .cards-3, .quotes { grid-template-columns: 1fr 1fr; }
  .users { grid-template-columns: 1fr 1fr; }
  .row, .row.reverse .media, .about { display: block; }
  .row.reverse .media { order: 0; }
  .row img { height: 200px; margin-bottom: 16px; }
  .about { text-align: center; }
  .trust-nums { justify-content: center; margin-top: 16px; }
}
@media (max-width: 640px) {
  .wrap { width: calc(100% - 28px); }
  .hero { padding-top: 48px; min-height: 0; }
  .cards-4, .cards-3, .quotes, .users { grid-template-columns: 1fr; }
}

/* site-perf */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}
.nav { transform: translateZ(0); }