/* apps/site · 关于我们页专属样式（与 legal.css 叠加；纯 CSS，无脚本）
   设计语汇沿用方向 B「珊瑚黑曜」：近黑底 + 珊瑚/青色微光 + 等宽标签 */

.about-hero{position:relative;padding:4px 0 34px;margin-bottom:40px;border-bottom:1px solid var(--line)}
.about-hero::before{content:"";position:absolute;left:-20%;top:-140px;width:540px;height:340px;background:radial-gradient(closest-side,rgba(255,107,107,.20),transparent 72%);pointer-events:none}
.about-hero::after{content:"";position:absolute;right:-14%;top:-90px;width:440px;height:300px;background:radial-gradient(closest-side,rgba(14,165,164,.15),transparent 70%);pointer-events:none}
.about-hero>*{position:relative;z-index:1}
.about-hero h1{font-size:clamp(2.05rem,5.4vw,3.25rem);line-height:1.06;letter-spacing:-.045em;margin:20px 0 14px;font-weight:760}
.about-hero h1 em{font-style:normal;background:linear-gradient(94deg,var(--coral) 6%,#ffb691 92%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.about-intro{margin:24px 0 0;max-width:46rem;color:#c9cbd1}

.about-label{display:inline-block;font:10px var(--mono);letter-spacing:.18em;color:var(--faint);margin:0 0 14px}

.about-flow{margin:0 0 44px}
.about-flow ol{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.about-flow li{position:relative;border:1px solid var(--line);border-radius:12px;background:linear-gradient(180deg,var(--surface-2),var(--surface));padding:16px 16px 15px;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.about-flow li::before{content:"";position:absolute;left:16px;right:16px;top:0;height:1px;background:linear-gradient(90deg,rgba(255,107,107,.75),rgba(255,107,107,0))}
.about-flow li:hover{transform:translateY(-3px);border-color:rgba(255,107,107,.5);box-shadow:0 14px 32px rgba(0,0,0,.38)}
.about-flow .flow-idx{display:block;font:10px var(--mono);letter-spacing:.16em;color:var(--teal);margin-bottom:10px}
.about-flow strong{display:block;font-size:.98rem;color:var(--ink);letter-spacing:-.01em;margin-bottom:6px}
.about-flow .flow-desc{display:block;font-size:12.5px;line-height:1.6;color:var(--faint)}

.contact-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:16px;margin:4px 0 26px;align-items:stretch}
.contact-card{position:relative;border:1px solid var(--line);border-radius:14px;background:linear-gradient(180deg,var(--surface-2),var(--surface));padding:20px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease}
.contact-card::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,var(--coral),rgba(255,107,107,0))}
.contact-card:hover{border-color:rgba(255,255,255,.24);box-shadow:0 14px 32px rgba(0,0,0,.34)}
.contact-label{display:inline-block;font:10px var(--mono);letter-spacing:.16em;color:var(--muted);margin-bottom:14px}
.contact-qr{display:block;width:168px;height:auto;border-radius:10px;background:#fff;padding:8px}
.contact-hint{margin:12px 0 0;font-size:12.5px;color:var(--faint)}
.contact-mail{display:inline-block;font:600 clamp(1.02rem,2.3vw,1.32rem)/1.3 var(--mono);color:var(--ink);letter-spacing:-.01em;padding-bottom:4px;border-bottom:1px solid rgba(255,107,107,.42)}
.contact-mail:hover{color:var(--coral);border-color:var(--coral)}
.contact-note{margin:18px 0 0;font-size:13px;color:var(--muted)}

@media(max-width:900px){
  .about-flow ol{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:640px){
  .about-flow ol{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  .about-flow li,.contact-card{transition:none}
  .about-flow li:hover{transform:none}
}