@charset "UTF-8";

:root {
  --ink: #121820;
  --paper: #f3f6fa;
  --cyan: #0096fa;
  --deep: #0068b8;
  --coral: #ff6b5a;
  --mute: #5c6b7a;
  --night: #0d1218;
  --nav-shadow: 2px 2px 0 rgba(0, 150, 250, 0.35);
  --lift: 8px 12px 0 rgba(18, 24, 32, 0.1);
  --header-h: 72px;
  --content: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
  margin: 0;
  min-width: 320px;
  padding-top: var(--header-h);
  color: var(--ink);
  background:
    radial-gradient(800px 360px at 8% -6%, rgba(0,150,250,.12), transparent 55%),
    radial-gradient(640px 300px at 96% 4%, rgba(255,107,90,.1), transparent 50%),
    var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  line-height: 1.7;
}
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
p, h1, h2, h3, figure { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
.frame { width: min(calc(100% - 40px), var(--content)); margin: 0 auto; }

.grain {
  pointer-events: none; position: fixed; inset: 0; z-index: 80; opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.rail {
  position: fixed; z-index: 1000; top: 0; right: 0; left: 0; height: var(--header-h);
  background: rgba(243,246,250,.94); border-bottom: 2px solid var(--cyan); backdrop-filter: blur(12px);
}
.rail-in { height: 100%; display: flex; align-items: center; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 44px; height: 44px; border-radius: 12px; box-shadow: var(--nav-shadow); background: #fff; }
.brand strong { display: block; font-size: 15px; }
.brand small { display: block; font-size: 10px; letter-spacing: 0.18em; color: var(--cyan); font-weight: 800; }
.menu { margin-left: auto; }
.menu ul { display: flex; gap: 14px; }
.menu a { font-size: 13px; font-weight: 700; }
.menu a.current, .menu a:hover { color: var(--cyan); }
.get-btn, .header-get, .mobile-get {
  display: inline-flex; align-items: center; justify-content: center;
  height: 40px; padding: 0 18px; border-radius: 999px;
  background: var(--cyan); color: #fff; font-weight: 800; box-shadow: var(--nav-shadow);
}
.hand { display: none; margin-left: auto; align-items: center; gap: 10px; }
.nav-switch { width: 40px; height: 40px; }
.nav-switch i { display: block; width: 18px; height: 2px; margin: 5px auto; background: var(--ink); }

.opening { padding: 28px 0 64px; }
.open-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 28px; align-items: center; }
.eyebrow { font-size: 12px; letter-spacing: 0.14em; color: var(--cyan); font-weight: 800; }
h1 { font-size: clamp(40px, 6vw, 60px); line-height: 1.05; }
.kicker { margin: 10px 0; font-size: 22px; color: var(--deep); font-weight: 800; }
.lead { color: var(--mute); max-width: 38em; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; margin: 20px 0 12px; }
.hero-actions .get-btn { height: 46px; padding: 0 24px; }
.ghost { font-weight: 800; border-bottom: 2px solid var(--coral); }
.stamp { font-size: 12px; color: var(--mute); }

.lightbox { position: relative; min-height: 520px; display: grid; place-items: center; }
.stack { position: absolute; inset: 24px 8% 40px; }
.stack figure {
  position: absolute; width: 42%; border: 8px solid #fff; box-shadow: var(--lift); background: #fff;
  transform-origin: center;
}
.frame-a { left: 0; top: 8%; transform: rotate(-8deg); }
.frame-b { right: 4%; top: 0; transform: rotate(6deg); }
.frame-c { left: 28%; bottom: 0; transform: rotate(2deg); width: 38%; }
.stack img { width: 100%; height: 160px; object-fit: cover; }
.phone {
  position: relative; z-index: 2; width: min(232px, 62vw);
  background: var(--night); border-radius: 30px; padding: 10px 8px 14px;
  box-shadow: 10px 14px 0 rgba(0,150,250,.18); animation: floaty 5s ease-in-out infinite;
}
.chin { display: block; width: 64px; height: 6px; margin: 0 auto 8px; border-radius: 6px; background: #2a3440; }
.led { display: flex; justify-content: space-between; font-size: 10px; padding: 0 8px 6px; color: #d7e6f5; }
.led em { color: var(--coral); font-style: normal; font-weight: 800; }
.phone img { width: 100%; height: auto; max-height: 380px; object-fit: cover; object-position: top; border-radius: 16px; background: #000; }
.float {
  position: absolute; z-index: 4; background: #fff; padding: 12px 14px; border-radius: 14px;
  box-shadow: var(--lift); font-size: 12px;
}
.float.a { left: 0; top: 36px; display: flex; gap: 8px; align-items: center; }
.float.a i { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); }
.float.b { right: 0; top: 100px; }
.float.b em { display: block; color: var(--coral); font-style: normal; }
.float.c { left: 6px; bottom: 48px; background: var(--night); color: #fff; }
.float.c span { display: block; letter-spacing: 0.14em; color: var(--cyan); font-size: 10px; }

.cap { margin-bottom: 22px; }
.cap p { font-size: 12px; letter-spacing: 0.18em; color: var(--cyan); font-weight: 800; }
.cap h2 { font-size: 30px; }
.cap small { display: block; margin-top: 6px; color: var(--mute); }
.cap.invert p, .cap.invert h2 { color: #eef6ff; }
.cap.invert small { color: #9eb6cc; }

.masonry-wrap { padding: 64px 0; }
.masonry {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr 1fr;
  grid-template-rows: auto auto;
  grid-template-areas:
    "a b c"
    "d d c"
    "e e c";
  gap: 12px;
}
.m1 { grid-area: a; background: #fff; }
.m2 { grid-area: b; background: var(--cyan); color: #fff; }
.m3 { grid-area: c; background: var(--night); color: #eef6ff; padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.m3 img { width: 100%; height: 180px; object-fit: cover; }
.m3 > div { padding: 18px 18px 16px; flex: 1; }
.m4 { grid-area: d; background: #ffe8e4; }
.m5 { grid-area: e; background: #fff; border: 2px dashed var(--cyan); }
.masonry article:not(.m3) { padding: 20px 18px; box-shadow: var(--lift); border-radius: 18px; }
.m3 { border-radius: 18px; box-shadow: var(--lift); }
.masonry b { font-size: 11px; letter-spacing: 0.14em; }
.masonry h3 { margin: 8px 0; font-size: 22px; }

.exposure-wrap { padding: 64px 0; background: var(--night); color: #eef6ff; }
.exposure { display: grid; grid-template-columns: 1fr 0.9fr; gap: 22px; align-items: center; }
.dial-panel { background: #17202a; padding: 22px; border-radius: 22px; box-shadow: 8px 12px 0 rgba(0,150,250,.2); }
.dial-panel label { display: block; font-size: 12px; letter-spacing: 0.16em; color: var(--cyan); font-weight: 800; margin-bottom: 10px; }
#exp-range {
  width: 100%; accent-color: var(--cyan); height: 8px; cursor: pointer;
}
.dial-marks { display: flex; justify-content: space-between; margin: 8px 0 16px; font-size: 12px; color: #9eb6cc; font-weight: 800; }
.rk { font-size: 12px; letter-spacing: 0.18em; color: var(--coral); }
.dial-panel h3 { margin: 8px 0; font-size: 26px; }
.dial-panel p { color: #9eb6cc; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.chips li { padding: 6px 12px; border-radius: 999px; background: #0d1218; font-size: 12px; font-weight: 700; }
.exp-shot { background: #17202a; padding: 12px; border-radius: 20px; transform: rotate(2deg); }
.exp-shot img { width: 100%; height: auto; max-height: 360px; object-fit: cover; object-position: top; background: #000; border-radius: 12px; }
.exp-shot figcaption { margin-top: 8px; text-align: center; font-size: 12px; letter-spacing: 0.16em; color: var(--cyan); font-weight: 800; }

.strip-wrap { padding: 64px 0; }
.strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.strip figure { background: #fff; padding: 10px; border-radius: 16px; box-shadow: var(--lift); }
.strip figure:nth-child(2) { transform: translateY(-10px); }
.strip figure:nth-child(3) { transform: translateY(8px); }
.bezel { background: var(--night); padding: 8px; border-radius: 14px; }
.strip img { width: 100%; height: auto; max-height: 280px; object-fit: cover; object-position: top; background: #000; border-radius: 8px; }
.strip figcaption { margin-top: 8px; font-weight: 800; display: flex; gap: 8px; }
.strip b { color: var(--cyan); }

.faq { padding: 0 0 64px; }
.tiles {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-bottom: 12px;
}
.tiles button {
  text-align: left; padding: 16px 14px; border-radius: 14px; background: #fff;
  font-weight: 800; box-shadow: 4px 6px 0 rgba(0,150,250,.1);
}
.tiles button.is-on { background: var(--cyan); color: #fff; }
.drawer { position: relative; min-height: 140px; }
.pane {
  display: none; background: linear-gradient(180deg, #fff, #e8f4ff);
  border-radius: 18px; padding: 22px 20px; box-shadow: var(--lift);
}
.pane.is-on { display: block; }
.pane span { color: var(--cyan); font-size: 12px; font-weight: 800; letter-spacing: 0.16em; }
.pane h3 { margin: 8px 0 10px; font-size: 22px; }
.pane p { color: var(--mute); }

.notes { padding: 0 0 64px; }
.timeline { position: relative; max-width: 860px; margin: 0 auto; }
.timeline::before {
  content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--coral)); transform: translateX(-50%);
}
.timeline article {
  width: calc(50% - 24px); background: #fff; padding: 14px 16px; border-radius: 14px;
  box-shadow: var(--lift); margin-bottom: 16px; position: relative;
}
.timeline article.left { margin-right: auto; }
.timeline article.right { margin-left: auto; }
.timeline time { display: block; font-size: 12px; color: var(--cyan); font-weight: 800; }
.timeline span { font-size: 12px; color: var(--mute); }

.download { padding: 0 0 64px; }
.stamp-bar {
  position: relative; text-align: center;
  background: linear-gradient(180deg, #fff, #e8f4ff);
  border: 3px dashed var(--cyan); border-radius: 8px;
  padding: 40px 24px 28px; box-shadow: var(--lift);
}
.perf {
  position: absolute; left: 12px; right: 12px; top: 18px; height: 10px;
  background: radial-gradient(circle, var(--paper) 4px, transparent 5px) repeat-x;
  background-size: 18px 10px;
}
.stamp-bar small { letter-spacing: 0.22em; color: var(--cyan); font-weight: 800; }
.stamp-bar h2 { margin: 10px 0 8px; }
.stamp-bar p { color: var(--mute); }
.stamp-stats { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin: 16px 0; }
.stamp-stats li { background: #fff; padding: 8px 12px; border-radius: 999px; box-shadow: var(--nav-shadow); font-size: 13px; }
.stamp-stats b { color: var(--cyan); margin-right: 4px; }

.site-footer { background: var(--night); color: #eef6ff; padding: 26px 0 18px; }
.footer-shell { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.site-footer .brand small { color: var(--cyan); }
.site-footer nav { display: flex; gap: 16px; flex-wrap: wrap; }
.site-footer nav a { color: var(--coral); font-weight: 700; }
.copy { text-align: center; margin-top: 12px; color: #8a9aab; font-size: 13px; }

.back-top {
  position: fixed; z-index: 40; right: 22px; bottom: 22px; width: 44px; height: 44px; border-radius: 50%;
  visibility: hidden; opacity: 0; display: grid; place-items: center;
  background: var(--cyan); box-shadow: var(--nav-shadow);
}
.back-top::before {
  content: ""; width: 12px; height: 12px;
  border-left: 2px solid #fff; border-top: 2px solid #fff;
  transform: translateY(3px) rotate(45deg);
}
.back-top.is-visible { visibility: visible; opacity: 1; }

@keyframes floaty { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }

@media (max-width: 980px) {
  .header-get { display: none; }
  .hand { display: flex; }
  .menu { position: fixed; top: var(--header-h); right: 0; left: 0; display: none; background: var(--paper); }
  .menu.is-open { display: block; }
  .menu ul { flex-direction: column; gap: 0; padding: 8px 20px 16px; }
  .menu a { display: block; padding: 12px 0; }
  .open-grid, .exposure { display: flex; flex-direction: column; }
  .open-copy { text-align: center; }
  .hero-actions { justify-content: center; }
  .hero-actions .get-btn { width: 100%; }
  .float { position: static; display: inline-flex; margin: 6px; }
  .lightbox { min-height: 0; }
  .stack { display: none; }
  .masonry {
    display: flex; flex-direction: column;
  }
  .masonry article { transform: none; }
  .tiles { grid-template-columns: 1fr 1fr; }
  .strip {
    display: flex; gap: 12px; overflow-x: auto; -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory; padding-bottom: 10px;
  }
  .strip figure { flex: 0 0 min(72vw, 260px); scroll-snap-align: start; transform: none; }
  .timeline::before { left: 10px; }
  .timeline article { width: calc(100% - 28px); margin-left: 28px !important; margin-right: 0 !important; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .phone { animation: none; }
}