:root{--blue:#1677ff;--deep:#0f5ef7;--text:#0f172a;--soft:#475569;--card:rgba(255,255,255,.86);--shadow:0 16px 45px rgba(22,119,255,.12);--max:1120px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Helvetica Neue",Arial,sans-serif;color:var(--text);background:radial-gradient(circle at top left,rgba(22,119,255,.13),transparent 28%),linear-gradient(180deg,#fbfdff 0%,#eef5ff 100%)}
a{text-decoration:none;color:inherit}
.container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.nav{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.78);backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.9)}
.nav-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:900}
.badge{width:38px;height:38px;border-radius:14px;background:linear-gradient(135deg,var(--blue),#63b3ff);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 12px 28px rgba(22,119,255,.28)}
.links{display:flex;gap:8px;flex-wrap:wrap}
.links a{padding:10px 14px;border-radius:999px;color:var(--soft);font-size:14px;font-weight:700}
.links a:hover{background:rgba(22,119,255,.08);color:var(--deep)}
.hero{padding:48px 0 26px}
.card{background:var(--card);border:1px solid rgba(255,255,255,.9);border-radius:28px;box-shadow:var(--shadow);backdrop-filter:blur(18px)}
.hero-card{padding:38px}
.pill{display:inline-flex;align-items:center;min-height:36px;padding:0 14px;border-radius:999px;background:rgba(22,119,255,.08);color:var(--deep);font-size:13px;font-weight:900;margin-bottom:18px}
h1{margin:0 0 16px;font-size:clamp(36px,5vw,62px);line-height:1.06;letter-spacing:-.055em}
h2{margin:0;font-size:clamp(28px,3.5vw,42px);letter-spacing:-.04em}
h3{margin:0 0 10px;font-size:22px}
p{margin:0;color:var(--soft);line-height:1.9;font-size:15px}
.sub{font-size:17px;line-height:1.95;max-width:780px}
.cta{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap}
.btn{min-height:50px;padding:0 18px;border-radius:16px;display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:900}
.btn.primary{background:linear-gradient(135deg,var(--blue),#4aa9ff);color:#fff;box-shadow:0 14px 32px rgba(22,119,255,.26)}
.btn.ghost{background:#fff;color:var(--deep);border:1px solid rgba(22,119,255,.12)}
.section{padding:24px 0 0}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:18px}
.item{padding:24px;border-radius:24px;background:rgba(255,255,255,.82);border:1px solid rgba(255,255,255,.9);box-shadow:0 12px 36px rgba(22,119,255,.08)}
.tag{display:inline-flex;margin-bottom:14px;min-height:32px;padding:0 12px;align-items:center;border-radius:999px;background:rgba(22,119,255,.08);color:var(--deep);font-size:12px;font-weight:900}
.list{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:10px}
.list li{color:var(--soft);line-height:1.8;font-size:15px;padding-left:18px;position:relative}
.list li:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--blue);position:absolute;left:0;top:11px}
.footer{padding:34px 0}
.foot{padding:18px 22px;border-radius:24px;background:rgba(255,255,255,.72);box-shadow:var(--shadow);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--soft);font-size:14px;font-weight:700}
@media(max-width:900px){.grid{grid-template-columns:1fr}.hero-card,.item{padding:22px}.nav-inner{flex-direction:column;align-items:flex-start;padding:12px 0}.btn{width:100%}}

@media(max-width:900px){
  body::before{
    right:-260px;
    top:120px;
    width:560px;
    height:480px;
    opacity:.52;
  }
}

/* ===== 首页关于我入口：独立开发者 & 创业者 ===== */
.about-title-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
  transition: color .22s ease, transform .22s ease;
}

.about-title-link:hover {
  color: #1677ff;
  transform: translateX(3px);
}

.about-title-arrow {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  color: #1677ff;
  background: rgba(22,119,255,.09);
  font-size: 18px;
  transition: background .22s ease, transform .22s ease;
}

.about-title-link:hover .about-title-arrow {
  background: rgba(22,119,255,.16);
  transform: translateX(3px);
}