:root {
  --ink: #222;
  --muted: #666;
  --line: #ececec;
  --bg: #fff;
  --wash: #f5f6f8;
  --soft: #f0f2f5;
  --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 400;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 72px;
}
a { color: inherit; text-decoration: none; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; z-index: 30; background: #fff; padding: 8px 12px; }

.top {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  height: 80px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 48px;
  background: #fff;
}
.brand {
  font-weight: 500;
  font-size: 22px;
  line-height: 26px;
  letter-spacing: 0;
  color: #111;
}
.nav {
  display: flex;
  align-items: stretch;
  height: 80px;
  font-size: 16px;
  font-weight: 400;
  color: #555;
}
.nav a {
  display: flex;
  align-items: center;
  padding: 0 20px;
  line-height: 80px;
  white-space: nowrap;
}
.nav a:hover { color: #111; }
.top-actions { justify-self: end; }
.top-actions .btn-sm {
  min-height: 36px;
  padding: 0 18px;
  font-size: 14px;
}
.menu {
  display: none;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 20px;
  background:
    linear-gradient(#111, #111) 10px 14px / 20px 2px no-repeat,
    linear-gradient(#111, #111) 10px 19px / 20px 2px no-repeat,
    linear-gradient(#111, #111) 10px 24px / 20px 2px no-repeat,
    var(--wash);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 24px;
  border: 0;
  border-radius: 999px;
  background: #111;
  color: #fff;
  font: 400 16px var(--sans);
  cursor: pointer;
}
.btn-sm { min-height: 36px; padding: 0 16px; }
.btn-ghost { background: #fff; color: #111; border: 1px solid #ddd; }
.btn:hover { filter: brightness(1.08); }

.hero {
  position: relative;
  min-height: calc(100vh - 80px);
  margin-top: 80px;
  display: flex;
  align-items: center;
  padding: 0 8%;
  overflow: hidden;
  background: linear-gradient(180deg, #fff 42%, #eef2f4 100%);
}
.hero-copy { position: relative; z-index: 2; max-width: 760px; }
.kicker {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0;
  color: #888;
}
.hero h1 {
  margin: 0 0 24px;
  font-size: clamp(52px, 6.4vw, 80px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0;
  color: #111;
}
.lead { max-width: 32em; color: #555; font-size: 18px; font-weight: 400; line-height: 1.7; }
.hero-actions { display: flex; gap: 12px; margin: 36px 0 0; flex-wrap: wrap; }
.meta { display: none; }

.hero-visual {
  position: absolute;
  right: 4%;
  top: 8%;
  bottom: 6%;
  width: 46%;
}
.orb {
  position: absolute;
  right: 4%;
  top: 0;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: linear-gradient(145deg, #dfe7ef, #f7f9fb);
  box-shadow: 20px 30px 60px rgba(20, 30, 40, 0.08);
}
.store {
  position: absolute;
  left: 8%;
  bottom: 10%;
  width: 72%;
  max-width: 480px;
  height: 62%;
  max-height: 340px;
  background: #1a1d21;
  border-radius: 10px 10px 0 0;
  box-shadow: 0 50px 90px rgba(0, 0, 0, 0.16);
}
.sign {
  position: absolute;
  left: -28px;
  top: 24px;
  writing-mode: vertical-rl;
  background: #111;
  color: #fff;
  font-size: 13px;
  letter-spacing: 0.3em;
  padding: 16px 8px;
}
.glass { position: absolute; top: 28px; width: 96px; height: 88px; background: linear-gradient(180deg, #f3ead0, #c9a227); }
.g1 { left: 36px; }
.g2 { left: 148px; }
.door {
  position: absolute;
  left: 108px;
  bottom: 0;
  width: 64px;
  height: 86px;
  background: linear-gradient(90deg, #2a3036, #111 45%, #2a3036);
}
.floor {
  position: absolute;
  left: 4%;
  right: 4%;
  bottom: 6%;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(0, 0, 0, 0.12), transparent 70%);
}

.showcase {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  min-height: 520px;
  align-items: center;
  background: var(--bg);
}
.showcase.alt { background: var(--wash); }
.showcase .copy { padding: 72px 10%; }
.showcase h2 { margin: 0 0 16px; font-size: 36px; font-weight: 600; letter-spacing: 0; line-height: 1.35; }
.showcase p { margin: 0 0 28px; color: #666; max-width: 28em; font-size: 16px; font-weight: 400; }
.visual {
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.v-shelf { background: linear-gradient(180deg, #f7f8fa, #e8edf2); }
.rack {
  width: 72%;
  max-width: 420px;
  height: 280px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 10px;
  padding: 18px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 30px 60px rgba(20, 30, 40, 0.1);
}
.rack i { display: block; border-radius: 8px; background: linear-gradient(180deg, #f4efe3, #d9c59a); }
.v-app { background: radial-gradient(circle at 60% 40%, #e8eef4, #d5dee6 62%, #eef2f6); }
.phone {
  width: 180px;
  height: 320px;
  padding: 18px 14px;
  border-radius: 28px;
  background: #111;
  box-shadow: 0 40px 70px rgba(0, 0, 0, 0.18);
  display: grid;
  gap: 10px;
  align-content: start;
}
.phone b { display: block; height: 54px; border-radius: 10px; background: #2a2e33; }
.phone b:first-child { height: 22px; width: 40%; margin: 0 auto 8px; background: #1c1f23; }
.v-box { background: linear-gradient(160deg, #fafbfc, #eceff3 55%, #d9e0e7); }
.crates { display: flex; gap: 16px; align-items: end; }
.crates i {
  display: block;
  width: 92px;
  height: 92px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 24px 40px rgba(20, 30, 40, 0.1);
}
.crates i:nth-child(2) { height: 128px; width: 110px; }
.crates i:nth-child(3) { height: 76px; }

.support { padding: 88px 8%; background: #fff; }
.support h2 { margin: 0 0 36px; font-size: 36px; font-weight: 600; }
.tiles { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.tiles article { background: #fff; padding: 36px; }
.tiles h3 { margin: 0 0 8px; font-size: 18px; }
.tiles p { margin: 0; color: #666; }

.block { padding: 88px 8%; max-width: 1200px; margin: 0 auto; }
.block h2 { margin: 0 0 28px; font-size: 36px; font-weight: 600; }
.hint { color: #888; margin: -12px 0 24px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 16px 18px; border-bottom: 1px solid var(--line); }
th { background: var(--wash); font-weight: 500; font-size: 13px; color: #666; }
td:last-child { font-weight: 600; }

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.steps li { padding: 8px 8px 0 0; }
.steps b { display: block; font-size: 13px; color: #999; margin-bottom: 8px; }
.steps strong { display: block; font-size: 18px; margin-bottom: 8px; }
.steps span { color: #666; font-size: 14px; }

.faq dt { padding-top: 20px; border-top: 1px solid var(--line); font-weight: 600; }
.faq dd { margin: 8px 0 20px; color: #666; }

.apply {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  padding: 88px 8%;
  background: var(--wash);
}
.apply h2 { margin: 0 0 24px; font-size: 40px; font-weight: 600; line-height: 1.3; }
.apply ul { padding-left: 18px; color: #666; }
form { display: grid; gap: 14px; background: #fff; padding: 32px; border-radius: 16px; }
label { display: grid; gap: 6px; font-size: 13px; color: #666; }
input, select, textarea {
  font: inherit;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: 2px solid #111; border-color: transparent; }
.form-hint, .form-msg { margin: 0; font-size: 12px; color: #999; }
.form-msg.ok { color: #1a7f4b; }
.form-msg.err { color: #c0392b; }

.foot {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 32px;
  padding: 56px 8% 80px;
  background: #fff;
  border-top: 1px solid var(--line);
  color: #888;
  font-size: 13px;
}
.foot .brand { color: #111; font-size: 18px; margin: 0 0 8px; }
.foot p { margin: 0 0 10px; color: #111; font-weight: 600; }
.foot a, .foot span { display: block; margin: 6px 0; font-weight: 400; color: #888; }
.foot a:hover { color: #111; }

.dock {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  border-top: 1px solid var(--line);
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  align-items: center;
  justify-content: space-between;
}

#why, #system, #support, #policy, #flow, #apply { scroll-margin-top: 88px; }

@media (max-width: 900px) {
  .nav, .top-actions { display: none; }
  .top { grid-template-columns: 1fr auto; padding: 0 16px; }
  .top.open .nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    height: auto;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 8px 16px 16px;
    border-bottom: 1px solid var(--line);
  }
  .top.open .nav a { line-height: 44px; height: 44px; }
  .menu { display: block; }
  .hero, .showcase, .apply, .tiles, .steps, .foot { grid-template-columns: 1fr; }
  .hero { display: block; padding: 48px 20px 40px; min-height: 0; }
  .hero h1 { font-size: 40px; }
  .hero-visual { position: relative; width: 100%; height: 280px; right: auto; top: auto; bottom: auto; margin-top: 24px; }
  .showcase .copy, .support, .block, .apply, .foot { padding-left: 20px; padding-right: 20px; }
  .visual { min-height: 220px; }
  .dock { display: flex; }
}