:root {
  --bg: #fff4d6;
  --paper: #fffdf6;
  --ink: #111;
  --muted: #4a4a4a;
  --yellow: #ffd23f;
  --coral: #ff5a36;
  --red: #e5383b;
  --line: 3px solid var(--ink);
  --shadow: 6px 6px 0 var(--ink);
  --radius: 14px;
  --font: "Arial Black", "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --body: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 var(--body); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--coral); outline-offset: 3px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; background: var(--paper); padding: 8px 12px; border: var(--line); z-index: 10; }

.mark { width: 32px; height: 32px; flex: none; }
.mark rect { fill: var(--paper); stroke: var(--ink); stroke-width: 2.6; }
.mark circle { fill: var(--red); }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 900 26px/1 var(--font); letter-spacing: -0.5px; }

.nav { max-width: 1160px; margin: 0 auto; padding: 22px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.nav nav { display: flex; align-items: center; gap: 22px; font-weight: 700; }
.nav nav a { text-decoration: none; }
.nav nav a:hover { text-decoration: underline; text-decoration-thickness: 3px; text-underline-offset: 5px; }
.lang { font: 800 14px var(--body); background: var(--paper); border: var(--line); border-radius: 999px; padding: 6px 14px; box-shadow: 3px 3px 0 var(--ink); cursor: pointer; }
.lang:active { transform: translate(3px, 3px); box-shadow: none; }

.hero { max-width: 1160px; margin: 0 auto; padding: 40px 24px 80px; display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; }
.tag { display: inline-block; margin: 0 0 18px; padding: 4px 12px; background: var(--yellow); border: var(--line); border-radius: 999px; font-weight: 800; font-size: 14px; transform: rotate(-2deg); }
h1, h2, h3 { font-family: var(--font); font-weight: 900; line-height: 1.04; letter-spacing: -1px; margin: 0; }
h1 { font-size: clamp(42px, 5.4vw, 70px); }
h2 { font-size: clamp(32px, 4.4vw, 52px); margin-bottom: 32px; }
h3 { font-size: 22px; letter-spacing: -0.3px; margin-bottom: 8px; }
.lead { font-size: 20px; color: var(--muted); max-width: 36em; margin: 22px 0 30px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 22px; border: var(--line); border-radius: 12px; font: 800 17px var(--body); text-decoration: none; box-shadow: var(--shadow); transition: transform .08s, box-shadow .08s; }
.btn-disabled { background: #e9e2cf; color: #3b3b3b; cursor: not-allowed; }
.btn-ghost { background: var(--paper); }
.btn-ghost:hover { background: var(--yellow); }
.btn-ghost:active { transform: translate(6px, 6px); box-shadow: none; }
.pills { list-style: none; padding: 0; margin: 28px 0 0; display: flex; flex-wrap: wrap; gap: 10px; }
.pills li { padding: 6px 14px; background: var(--paper); border: 2px solid var(--ink); border-radius: 999px; font-weight: 700; font-size: 15px; }
.pills li::before { content: "✓ "; color: var(--coral); font-weight: 900; }

.hero-shot { position: relative; min-height: 560px; }
.shot { border: var(--line); border-radius: var(--radius); box-shadow: 10px 10px 0 var(--ink); background: var(--paper); }
.shot-popup { width: 290px; position: absolute; left: 0; top: 70px; z-index: 1; transform: rotate(-2deg); }
.shot-rec { width: 250px; position: absolute; right: 0; top: 0; z-index: 2; transform: rotate(3deg); }

.section { max-width: 1160px; margin: 0 auto; padding: 72px 24px; }
.sub { margin: -16px 0 32px; color: var(--muted); font-size: 18px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card { background: var(--paper); border: var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; }
.card p { margin: 0; color: var(--muted); }
.ico { width: 52px; height: 52px; display: grid; place-items: center; font-size: 26px; background: var(--yellow); border: var(--line); border-radius: 12px; margin-bottom: 16px; }
.grid .card:nth-child(3n+2) .ico { background: #ffb4a3; }
.grid .card:nth-child(3n) .ico { background: #bfe6ff; }

.steps { list-style: none; padding: 0; margin: 0 0 48px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.num { display: inline-grid; place-items: center; width: 44px; height: 44px; margin-bottom: 14px; background: var(--coral); color: #fff; border: var(--line); border-radius: 50%; font: 900 22px var(--font); }
.wide-shot { margin: 0; }
.wide-shot .shot { width: 100%; }
.wide-shot figcaption { margin-top: 18px; text-align: center; color: var(--muted); font-weight: 600; }

.skins { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.skins figure { margin: 0; }
.skins img { border: var(--line); border-radius: var(--radius); box-shadow: var(--shadow); background: var(--paper); width: 100%; }
.skins figcaption { margin-top: 12px; font: 900 18px var(--font); display: flex; align-items: center; gap: 8px; }
.skins em, .skins b { font: 800 12px var(--body); font-style: normal; padding: 2px 8px; border: 2px solid var(--ink); border-radius: 999px; }
.skins em { background: #c9f2c7; }
.skins b { background: var(--yellow); }

.faq { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.faq summary { font: 900 19px var(--font); cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::after { content: "+"; font-size: 26px; line-height: 0.8; }
.faq details[open] summary::after { content: "–"; }
.faq summary::-webkit-details-marker { display: none; }
.faq details p { margin-top: 12px; }

.foot { max-width: 1160px; margin: 40px auto 0; padding: 40px 24px 56px; border-top: var(--line); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; color: var(--muted); font-weight: 600; }
.foot p { margin: 0; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-bottom: 40px; }
  .hero-shot { min-height: 0; display: flex; justify-content: center; padding: 10px 0 60px; }
  .shot-popup { position: relative; top: 0; left: 0; width: min(290px, 66vw); }
  .shot-rec { width: min(220px, 50vw); right: 2%; top: auto; bottom: 20px; }
  .grid, .steps { grid-template-columns: 1fr 1fr; }
  .skins { grid-template-columns: repeat(3, 1fr); }
  .faq { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  .nav nav a { display: none; }
  .grid, .steps { grid-template-columns: 1fr; }
  .skins { grid-template-columns: 1fr 1fr; }
  .section { padding: 48px 20px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .btn { transition: none; } }