/* Variant A · Perk soft-card stack (layout fix)
   https://styles.refero.design/style/75c06591-34d2-493a-bd49-70551b5e4a53
   Refero MCP live 未用 · NO_SUBSCRIPTION · styles.refero.design 免费页
   Owner: 取消全屏色带 → 有限宽软卡 + 明显 gutter */
body.variant-a {
  --bg: #ffffff;
  --bg-parchment: #f5f5eb;
  --bg-lime: #beff50;
  --bg-dark: #14140f;
  --bg-island: #30302a;
  --text: #14140f;
  --muted: #6e6e64;
  --muted-2: #919183;
  --border: #d2d2c8;
  --accent: #beff50;
  --cta-fg: #14140f;
  --radius-card: 28px;
  --radius-ctl: 28px;
  --radius-pill: 9999px;
  --radius-input: 8px;
  --radius-inner: 18px;
  --section-gap: clamp(5rem, 12vw, 7.5rem);
  --page-gutter: clamp(1.5rem, 8vw, 6rem);
  --page-max: 1200px;
  background: var(--bg);
  color: var(--text);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
}
body.variant-a a { color: var(--text); }
body.variant-a .nav {
  position: sticky; top: 0; z-index: 30;
  background: #ffffff; border-bottom: 1px solid var(--border);
}
body.variant-a .nav-inner {
  max-width: var(--page-max); margin: 0 auto; padding: 1rem var(--page-gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
body.variant-a .brand { font-weight: 500; font-size: 1.125rem; letter-spacing: -0.02em; color: var(--text); }
body.variant-a .nav-right { display: flex; align-items: center; gap: 0.75rem; }
body.variant-a .badge-code {
  font-size: 10px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.35rem 0.75rem; border-radius: var(--radius-pill); background: var(--bg-parchment); color: var(--muted);
}
body.variant-a .nav-cta {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0.65rem 1.1rem;
  background: var(--accent); color: var(--cta-fg); border-radius: var(--radius-ctl); font-weight: 500;
}
body.variant-a .nav-cta:hover { text-decoration: none; filter: brightness(0.97); }

/* Shared wrap — visible side gutters (desktop ≥64–96px feel) */
body.variant-a .layout-a-wrap {
  max-width: var(--page-max);
  margin: 0 auto;
  padding-left: var(--page-gutter);
  padding-right: var(--page-gutter);
}

/* Hero: white canvas + limited-width split soft cards (NO full-bleed lime) */
body.variant-a .layout-a-hero {
  background: var(--bg);
  padding: clamp(2.5rem, 7vw, 5rem) 0 clamp(1rem, 3vw, 2rem);
}
body.variant-a .layout-a-hero-inner {
  display: grid; gap: 1.5rem;
}
@media (min-width: 900px) {
  body.variant-a .layout-a-hero-inner {
    grid-template-columns: 1.15fr 0.85fr; align-items: stretch; gap: 1.75rem;
  }
}
body.variant-a .layout-a-hero-copy-card {
  background: var(--bg-lime);
  border-radius: var(--radius-card);
  padding: clamp(1.75rem, 4vw, 3rem);
}
body.variant-a .layout-a-eyebrow {
  font-size: 11px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text); margin: 0 0 1rem; opacity: 0.75;
}
body.variant-a .layout-a-hero h1 {
  margin: 0 0 1rem; font-size: clamp(2.25rem, 5.5vw, 3.75rem); font-weight: 500;
  letter-spacing: -0.03em; line-height: 0.95; text-wrap: balance; color: var(--text);
}
body.variant-a .layout-a-hero .hero-sub {
  margin: 0; max-width: 36rem; font-size: 1.125rem; line-height: 1.5; color: var(--text); opacity: 0.85;
}
body.variant-a .layout-a-form-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: clamp(1.5rem, 3vw, 2.5rem);
}
body.variant-a .hero-card-title { margin: 0 0 1rem; font-size: 1.25rem; font-weight: 500; letter-spacing: -0.02em; }
body.variant-a .waitlist-form input,
body.variant-a .waitlist-form textarea {
  background: #ffffff; border: 1px solid var(--border); border-radius: var(--radius-input); color: #000;
}
body.variant-a .waitlist-form input:focus-visible,
body.variant-a .waitlist-form textarea:focus-visible {
  outline: 2px solid var(--text); outline-offset: 2px;
}
body.variant-a .btn-primary {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px;
  padding: 0.9rem 1.25rem; border: 0; border-radius: var(--radius-ctl);
  background: var(--accent); color: var(--cta-fg); font: inherit; font-weight: 500; cursor: pointer;
}
body.variant-a .btn-primary:hover { filter: brightness(0.96); }
body.variant-a .privacy { margin: 1rem 0 0; font-size: 0.8125rem; color: var(--muted); }
body.variant-a .privacy-inline { white-space: nowrap; }

/* Sections: white page only — color lives on cards, not edge-to-edge bands */
body.variant-a .layout-a-section {
  background: var(--bg);
  padding: var(--section-gap) 0 0;
}
body.variant-a .section-label {
  font-size: 11px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 0.75rem;
}
body.variant-a .section-title {
  margin: 0 0 2rem; font-size: clamp(1.75rem, 3vw, 2.25rem); font-weight: 500;
  letter-spacing: -0.03em; line-height: 1.1;
}

/* Pain: independent soft cards with visible boundary + gaps */
body.variant-a .layout-a-stack {
  display: grid; gap: 1.25rem;
}
@media (min-width: 800px) {
  body.variant-a .layout-a-stack { grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
}
body.variant-a .layout-a-soft-card {
  background: var(--bg-parchment);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 2rem 1.75rem;
}
body.variant-a .layout-a-soft-card .icon-wrap {
  width: 2.5rem; height: 2.5rem; display: grid; place-items: center;
  background: #ffffff; border: 1px solid var(--border); border-radius: var(--radius-inner);
  margin-bottom: 1rem; color: var(--text);
}
body.variant-a .layout-a-soft-card .icon-wrap svg { width: 1.25rem; height: 1.25rem; }
body.variant-a .layout-a-soft-card h3 {
  margin: 0 0 0.5rem; font-size: 1.25rem; font-weight: 500; letter-spacing: -0.02em;
}
body.variant-a .layout-a-soft-card p { margin: 0; color: var(--muted); font-size: 1rem; }

/* How: independent soft cards */
body.variant-a .layout-a-how {
  display: grid; gap: 1.25rem;
}
@media (min-width: 800px) {
  body.variant-a .layout-a-how { grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
}
body.variant-a .layout-a-how-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 1.75rem;
}
body.variant-a .step-num {
  font-size: 11px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 0.75rem;
}
body.variant-a .layout-a-how-card h3 { margin: 0 0 0.5rem; font-size: 1.125rem; font-weight: 500; }
body.variant-a .layout-a-how-card p { margin: 0; color: var(--muted); }
body.variant-a .chip-engine {
  display: inline-flex; margin-top: 0.75rem; padding: 0.35rem 0.75rem;
  background: var(--accent); color: var(--text); border-radius: var(--radius-pill);
  font-size: 11px; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase;
}

/* Who: single inset parchment card (not a full-bleed band) */
body.variant-a .layout-a-inset-card {
  background: var(--bg-parchment);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: clamp(1.75rem, 4vw, 3rem);
}
body.variant-a .layout-a-inset-card .section-title { margin-bottom: 1rem; }
body.variant-a .who-text { max-width: 40rem; color: var(--muted); margin: 0 0 1.25rem; }
body.variant-a .chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
body.variant-a .chip {
  padding: 0.45rem 0.9rem; border-radius: var(--radius-pill); background: #ffffff;
  border: 1px solid var(--border); font-size: 0.875rem; font-weight: 500; color: var(--text);
}

/* FAQ: each item is an independent soft card */
body.variant-a .faq-list { display: grid; gap: 0.85rem; max-width: 42rem; }
body.variant-a details.faq {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 0.35rem 1.25rem;
}
body.variant-a details.faq summary { font-weight: 500; }
body.variant-a .faq-body { padding: 0 0 1rem; color: var(--muted); }
body.variant-a .faq-body p { margin: 0; }

/* CTA: inset lime soft card — not a full-bleed lime wall */
body.variant-a .layout-a-cta {
  background: var(--bg);
  padding: var(--section-gap) 0;
  text-align: center;
}
body.variant-a .layout-a-cta-card {
  background: var(--bg-lime);
  border-radius: var(--radius-card);
  padding: clamp(2.5rem, 6vw, 4rem) clamp(1.5rem, 4vw, 3rem);
  max-width: 52rem;
  margin: 0 auto;
}
body.variant-a .layout-a-cta .section-title { margin-bottom: 0.75rem; }
body.variant-a .layout-a-cta .lead { margin: 0 0 1.5rem; color: var(--text); opacity: 0.8; }
body.variant-a .btn-recycle {
  display: inline-flex; align-items: center; min-height: 48px; padding: 0.9rem 1.5rem;
  background: var(--bg-dark); color: #f5f5eb; border-radius: var(--radius-ctl); font-weight: 500;
}
body.variant-a .btn-recycle:hover { text-decoration: none; filter: brightness(1.1); }

body.variant-a .site-footer {
  background: var(--bg-dark); color: #f5f5eb; padding: 3.5rem var(--page-gutter);
}
body.variant-a .site-footer .container { max-width: var(--page-max); margin: 0 auto; }
body.variant-a .site-footer p { margin: 0 0 1rem; color: #d2d2c8; font-size: 0.875rem; max-width: 40rem; }
body.variant-a .site-footer strong { color: #f5f5eb; }
body.variant-a .about-page summary { color: #919183; font-size: 0.8125rem; cursor: pointer; }
body.variant-a .about-body { color: #919183; font-size: 0.8125rem; margin-top: 0.5rem; }
body.variant-a .sticky-cta { background: rgba(255,255,255,0.92); border-top-color: var(--border); }
body.variant-a .result-panel { border-radius: var(--radius-inner); }
body.variant-a { --ok: #1f7a3a; --ok-bg: rgba(31,122,58,0.1); --err: #b42318; --err-bg: rgba(180,35,24,0.08); }