/* =================================================================
   PackPro / 装柜宝 — landing page styles · navy theme (from the app)
   ================================================================= */
:root {
  --bg: #061426;
  --bg2: #0A1B33;
  --card: rgba(255,255,255,.04);
  --card-solid: #0E2240;
  --line: rgba(140,200,255,.14);
  --cyan: #4FD1FF;
  --cyan-deep: #1B7FD6;
  --ink: #EAF4FF;
  --ink-soft: #8FB0CC;
  --ink-dim: #5D7A96;
  --green: #4ADE80;
  --orange: #F5A15A;
  --cjk: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --shadow-card: 0 18px 44px rgba(0,0,0,.35);
  --glow: 0 0 0 1px rgba(140,200,255,.18), 0 30px 80px rgba(27,127,214,.35);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Manrope", system-ui, -apple-system, var(--cjk);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  line-height: 1.55;
}
html[lang^="zh"] body, html[lang="ja"] body, html[lang="ko"] body { font-family: var(--cjk), "Manrope", system-ui, sans-serif; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 32px; }
.wrap.narrow { max-width: 820px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; font-weight: 700; font-size: 15px;
  background: var(--cyan); color: #04182E; border: 1px solid transparent;
  box-shadow: 0 10px 28px rgba(79,209,255,.28); transition: transform .15s, box-shadow .15s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 14px 34px rgba(79,209,255,.36); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); box-shadow: none; }
.btn.ghost:hover { border-color: rgba(140,200,255,.4); }
.btn.lg { padding: 16px 30px; font-size: 17px; }

.appstore {
  display: inline-flex; align-items: center; gap: 12px;
  background: #0B0F16; color: #fff; border: 1px solid rgba(255,255,255,.14);
  border-radius: 14px; padding: 10px 20px 10px 16px; min-height: 60px;
  transition: transform .15s, border-color .15s;
}
.appstore:hover { transform: translateY(-1px); border-color: rgba(255,255,255,.35); }
.appstore .apple { width: 30px; height: 30px; }
.appstore .t { display: flex; flex-direction: column; line-height: 1.1; }
.appstore .t small { font-size: 11px; opacity: .8; letter-spacing: .3px; }
.appstore .t b { font-size: 21px; font-weight: 700; letter-spacing: -.2px; }

/* =================================================================
   HEADER
   ================================================================= */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(6,20,38,.78);
  backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; gap: 16px; min-height: 74px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; flex: none; }
.brand .name { font-size: 22px; letter-spacing: 2px; color: var(--ink); white-space: nowrap; }
.app-icon { border-radius: 22.5%; box-shadow: 0 6px 18px rgba(0,0,0,.4); }
.app-icon.big { margin: 0 auto 18px; border-radius: 22.5%; }
.nav-links { margin-left: auto; display: flex; align-items: center; gap: 26px; }
.nav-links a { font-size: 15px; font-weight: 600; color: var(--ink-soft); transition: color .15s; white-space: nowrap; }
.nav-links a:hover { color: var(--cyan); }
.lang-control { display: inline-flex; align-items: center; gap: 8px; flex: none; color: var(--ink-soft); font-size: 13px; font-weight: 600; }
.lang-control select {
  appearance: none; -webkit-appearance: none; border: 1px solid var(--line); border-radius: 999px;
  background: var(--card-solid); color: var(--ink); font: inherit; font-size: 13px;
  padding: 8px 30px 8px 14px; min-width: 118px; cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--cyan) 50%), linear-gradient(135deg, var(--cyan) 50%, transparent 50%);
  background-position: calc(100% - 17px) 50%, calc(100% - 12px) 50%;
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
}
.lang-control select:focus-visible { outline: 3px solid rgba(79,209,255,.3); outline-offset: 2px; }
.nav .btn { padding: 10px 20px; font-size: 14px; flex: none; }

/* =================================================================
   HERO
   ================================================================= */
.hero { position: relative; padding: 72px 0 60px; overflow: hidden; }
.hero .grid-bg {
  position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(120,190,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(120,190,255,.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 75%);
}
.hero::before {
  content: ""; position: absolute; left: 50%; top: -220px; width: 900px; height: 600px; transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(27,127,214,.45), transparent); pointer-events: none;
}
.hero .wrap { position: relative; z-index: 2; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase;
  color: var(--cyan); border: 1px solid rgba(79,209,255,.35); border-radius: 999px; padding: 6px 14px; background: rgba(79,209,255,.08);
}
.hero h1 { font-size: clamp(34px, 4.6vw, 54px); line-height: 1.12; letter-spacing: -.5px; margin: 20px 0 16px; font-weight: 800; }
.hero p.lead { font-size: 18px; color: var(--ink-soft); margin: 0; max-width: 560px; }
.hero .cta { margin-top: 30px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.hero-points { list-style: none; padding: 0; margin: 28px 0 0; display: flex; flex-direction: column; gap: 8px; color: var(--ink-soft); font-size: 15px; }
.hero-points li::before { content: "✓"; color: var(--green); font-weight: 800; margin-right: 10px; }
.hero-art { position: relative; min-height: 560px; display: grid; place-items: center; }
.hero-art .halo { position: absolute; width: 520px; height: 520px; border-radius: 50%; background: radial-gradient(closest-side, rgba(79,209,255,.22), transparent); filter: blur(10px); }
.phone {
  position: relative; border-radius: 42px; overflow: hidden; background: #000;
  border: 6px solid #0f1a2b; box-shadow: var(--glow);
}
.phone img { width: 100%; }
.hero-art .phone-lg { width: 300px; z-index: 2; animation: float 7s ease-in-out infinite; }
.hero-art .phone-sm { width: 220px; position: absolute; right: -6px; bottom: 12px; z-index: 1; opacity: .92; animation: float 8s ease-in-out infinite reverse; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* =================================================================
   STRIP
   ================================================================= */
.strip { background: rgba(255,255,255,.025); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.strip .wrap { display: flex; justify-content: center; gap: 56px; padding: 22px 32px; flex-wrap: wrap; }
.strip .item { display: flex; align-items: center; gap: 12px; font-size: 16px; font-weight: 600; color: var(--ink); }
.strip .item .ic { color: var(--cyan); display: grid; place-items: center; }

/* =================================================================
   SECTIONS
   ================================================================= */
.section { padding: 96px 0; position: relative; }
.section.alt { background: var(--bg2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto; }
.kicker { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 2.5px; text-transform: uppercase; color: var(--cyan); }
.section h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.18; margin: 12px 0 12px; letter-spacing: -.3px; font-weight: 800; }
.section .sub { color: var(--ink-soft); font-size: 17px; margin: 0; }

.row { display: grid; grid-template-columns: 1.08fr 1fr; gap: 70px; align-items: center; margin-top: 80px; }
.row .num { font-size: 13px; font-weight: 800; letter-spacing: 3px; color: var(--cyan); font-family: ui-monospace, "SF Mono", Menlo, monospace; }
.row h3 { font-size: 28px; margin: 10px 0 12px; letter-spacing: -.2px; font-weight: 800; }
.row p { color: var(--ink-soft); font-size: 16.5px; margin: 0; }
.row.flip .copy { order: 2; }
.row.flip .shot { order: 1; }
.feat-list { list-style: none; padding: 0; margin: 20px 0 0; display: flex; flex-direction: column; gap: 10px; }
.feat-list li { display: flex; gap: 10px; align-items: flex-start; color: var(--ink); font-size: 15px; }
.feat-list li::before { content: ""; flex: none; width: 18px; height: 18px; margin-top: 3px; border-radius: 6px; background: rgba(74,222,128,.15); border: 1px solid rgba(74,222,128,.5);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234ADE80' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l4 4 10-10'/%3E%3C/svg%3E"); background-size: 12px; background-position: center; background-repeat: no-repeat; }
.shot { display: grid; place-items: center; }
.shot .phone { width: 300px; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 28px 26px; box-shadow: var(--shadow-card); }
.card .c-ic { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 14px; color: var(--cyan); background: rgba(79,209,255,.1); border: 1px solid rgba(79,209,255,.25); }
.card h3 { font-size: 19px; margin: 18px 0 8px; font-weight: 800; }
.card p { color: var(--ink-soft); margin: 0; font-size: 15px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 40px; }
.stat { text-align: center; padding: 22px 10px; border-radius: 16px; border: 1px solid var(--line); background: rgba(255,255,255,.02); }
.stat b { display: block; font-size: 36px; color: var(--cyan); font-weight: 800; letter-spacing: -1px; line-height: 1; }
.stat span { display: block; margin-top: 8px; color: var(--ink-soft); font-size: 14px; }

/* ---------- privacy ---------- */
.privacy-item { border-top: 1px solid var(--line); padding: 22px 0; }
.privacy-item:first-of-type { margin-top: 36px; }
.privacy-item h3 { margin: 0 0 8px; font-size: 18px; font-weight: 800; }
.privacy-item p { margin: 0; color: var(--ink-soft); font-size: 15.5px; }

/* ---------- contact ---------- */
.contact { padding: 96px 0 80px; text-align: center; background: linear-gradient(180deg, var(--bg) 0%, #0B2140 100%); border-top: 1px solid var(--line); }
.contact h2 { font-size: clamp(26px, 3vw, 36px); margin: 0 0 12px; font-weight: 800; }
.contact p { color: var(--ink-soft); margin: 0 0 26px; font-size: 17px; }
.contact .small { margin-top: 22px; font-size: 13px; color: var(--ink-dim); }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--line); background: #04101F; }
.footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding: 26px 32px; font-size: 13.5px; color: var(--ink-dim); }
.footer .links { display: flex; gap: 20px; }
.footer .links a:hover { color: var(--cyan); }

/* =================================================================
   RESPONSIVE
   ================================================================= */
@media (max-width: 1000px) {
  .nav-links { display: none; }
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero p.lead { margin: 0 auto; }
  .hero .cta { justify-content: center; }
  .hero-points { align-items: center; }
  .hero-art { min-height: 520px; }
  .hero-art .phone-sm { right: 8%; }
  .row, .row.flip { grid-template-columns: 1fr; gap: 32px; text-align: center; margin-top: 64px; }
  .row.flip .copy { order: 1; } .row.flip .shot { order: 2; }
  .feat-list { align-items: center; }
  .cards { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .wrap { padding: 0 20px; }
  .nav .btn { display: none; }
  .lang-control span { display: none; }
  .brand .name { font-size: 19px; }
  .hero { padding: 48px 0 40px; }
  .hero-art .phone-lg { width: 240px; }
  .hero-art .phone-sm { width: 160px; right: 0; }
  .strip .wrap { gap: 14px; flex-direction: column; align-items: flex-start; }
  .section { padding: 64px 0; }
  .shot .phone { width: 250px; }
  .row h3 { font-size: 24px; }
  .stats { grid-template-columns: 1fr 1fr; }
}