:root {
  --ink: #16343c;
  --muted: #4d6a70;
  --paper: #eef6f2;
  --card: #fffdf8;
  --line: #c9ddd4;
  --mint: #4ec9a8;
  --peach: #f3a27a;
  --sky: #7eb8d6;
  --gold: #e8c56b;
  --navy: #1a4a52;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, #dff5ee 0 18%, transparent 19%),
    radial-gradient(circle at 88% 12%, #fde8d8 0 14%, transparent 15%),
    var(--paper);
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
img { max-width:100%;height:auto; display: block; }
.wrap { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
nav {
  position: sticky; top: 0; z-index: 20;
  background: rgba(238, 246, 242, .92);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 20px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .04em; }
.mark {
  width: 22px; height: 22px;
  background: linear-gradient(135deg, var(--mint), var(--sky));
  transform: rotate(45deg) skew(-8deg, -8deg);
  box-shadow: 6px 0 0 var(--peach);
}
.links { display: flex; gap: 18px; margin-left: auto; font-size: 14px; color: var(--muted); }
.button {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 11px 20px; border-radius: 14px 6px 14px 6px;
  background: var(--navy); color: #fff; font-weight: 700; font-size: 14px;
  box-shadow: 4px 4px 0 var(--mint);
}
.button.ghost { background: #fff; color: var(--ink); box-shadow: 4px 4px 0 var(--gold); }
.hero { position: relative; padding: 48px 0 28px; overflow: hidden; }
.iso-grid {
  position: absolute; inset: 0; pointer-events: none; opacity: .35;
  background-image:
    linear-gradient(30deg, #c9ddd4 1px, transparent 1px),
    linear-gradient(150deg, #c9ddd4 1px, transparent 1px);
  background-size: 42px 24px;
}
.hero-row { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 36px; align-items: center; }
.kicker {
  display: inline-block; margin-bottom: 10px; padding: 4px 10px;
  background: #fff; border: 2px solid var(--ink); border-radius: 999px;
  font-size: 12px; letter-spacing: .08em; text-transform: uppercase;
}
h1 { font-size: clamp(30px, 4.4vw, 48px); line-height: 1.18; margin-bottom: 12px; }
.lead { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.iso-stage {
  height: 280px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px;
  align-items: end; perspective: 700px;
}
.iso-block {
  position: relative; height: 150px;
  transform: rotateX(18deg) rotateZ(-18deg);
  transform-style: preserve-3d;
}
.iso-block .roof, .iso-block .face, .iso-block .side {
  position: absolute; inset: auto; display: block;
}
.iso-block .face {
  left: 18%; bottom: 18%; width: 64%; height: 58%;
  border: 2px solid var(--ink);
}
.iso-block .side {
  left: 82%; bottom: 26%; width: 22%; height: 50%;
  transform: skewY(-32deg);
  border: 2px solid var(--ink);
}
.iso-block .roof {
  left: 28%; bottom: 70%; width: 62%; height: 28px;
  transform: skewX(-38deg);
  border: 2px solid var(--ink);
}
.iso-block b {
  position: absolute; left: 50%; bottom: -6px; transform: translateX(-50%);
  font-size: 12px; background: #fff; padding: 2px 8px; border: 2px solid var(--ink);
}
.shop .face, .shop .roof { background: var(--peach); }
.shop .side { background: #d87d55; }
.ware .face, .ware .roof { background: var(--gold); }
.ware .side { background: #c9a24a; }
.cs .face, .cs .roof { background: var(--sky); }
.cs .side { background: #5b93b3; }
.trans .face, .trans .roof { background: var(--mint); }
.trans .side { background: #2fa888; }
.hero-shot {
  position: relative; width: min(1120px, calc(100% - 32px));
  margin: 36px auto 0; border: 3px solid var(--ink); background: #fff;
  box-shadow: 10px 10px 0 var(--mint);
}
.hero-shot img { width: 100%; height: 280px; object-fit: cover; }
.hero-shot figcaption {
  padding: 10px 14px; font-size: 13px; color: var(--muted);
  border-top: 2px solid var(--ink);
}
.section { padding: 64px 0; }
.head { margin-bottom: 24px; max-width: 640px; }
h2 { font-size: 28px; line-height: 1.25; margin-bottom: 8px; }
.grid6 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card {
  background: var(--card); border: 2px solid var(--ink); padding: 18px;
  box-shadow: 6px 6px 0 var(--line);
}
.icon {
  width: 36px; height: 36px; display: grid; place-items: center;
  background: var(--mint); color: var(--navy); font-weight: 800;
  transform: rotate(-8deg); margin-bottom: 10px; border: 2px solid var(--ink);
}
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; }
.split img, .shot img {
  width: 100%; height: 320px; object-fit: cover;
  border: 3px solid var(--ink); box-shadow: 8px 8px 0 var(--peach);
}
.scene-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 16px 0 20px; }
.scene {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 12px; background: #fff; border: 2px solid var(--ink);
}
.scene b { color: var(--navy); }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.review {
  background: #fff; border: 2px solid var(--ink); padding: 18px;
  box-shadow: 6px 6px 0 var(--sky);
}
.person { margin-top: 12px; display: flex; flex-direction: column; }
.person small { color: var(--muted); }
.visual { padding: 0 0 64px; }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 16px 0 20px; }
.metrics div { background: #fff; border: 2px solid var(--ink); padding: 10px; text-align: center; }
.metrics b { display: block; font-size: 22px; }
.metrics small { color: var(--muted); }
.faq-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 28px; }
details { background: #fff; border: 2px solid var(--ink); padding: 12px 14px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 700; }
details p { margin-top: 8px; color: var(--muted); }
.cta { background: var(--navy); color: #fff; padding: 48px 0; }
.cta-in { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.cta .button { background: var(--mint); color: var(--navy); box-shadow: 4px 4px 0 var(--gold); }
footer { padding: 36px 0 20px; border-top: 3px solid var(--ink); background: #fff; }
.footer { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 18px; }
.footer h4 { margin-bottom: 8px; }
.footer a, .footer p { display: block; color: var(--muted); font-size: 14px; margin-top: 6px; }
.copy { margin-top: 20px; padding-top: 12px; border-top: 2px solid var(--line); color: var(--muted); font-size: 13px; }
.page-head { padding: 48px 0 8px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.download-card { background: #fff; border: 2px solid var(--ink); padding: 22px; box-shadow: 7px 7px 0 var(--mint); }
.help-layout { display: grid; grid-template-columns: 220px 1fr; gap: 24px; }
.side { position: sticky; top: 88px; align-self: start; background: #fff; border: 2px solid var(--ink); padding: 12px; }
.side a { display: block; padding: 8px 10px; }
.article { background: #fff; border: 2px solid var(--ink); padding: 22px; margin-bottom: 16px; }
.policy { margin-top: 16px; padding-top: 12px; border-top: 2px dashed var(--line); }
@media (max-width: 900px) {
  .links { display: none; }
  .hero-row, .split, .faq-layout, .help-layout, .cta-in, .cards, .footer { grid-template-columns: 1fr; }
  .grid6, .review-grid { grid-template-columns: 1fr 1fr; }
  .iso-stage { height: 200px; }
  .hero-shot img, .split img, .shot img { height: 220px; }
}
@media (max-width: 560px) {
  .grid6, .review-grid, .metrics { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}