/* ============================================
   Common CSS — Safew 全站共享样式
   版本: v1.0 | 最后更新: 2026-07-27
   用途: 所有页面共用的 reset、变量、导航、页脚、按钮、通用区块
   注意: 本文件不含任何页面特有组件样式
   ============================================ */

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

/* ---------- CSS Variables ---------- */
:root{
  --bg:#05070d;--bg-2:#0a0f1c;--panel:#0e1424;--panel-2:#121a2e;
  --line:#1c2540;--line-2:#263056;
  --text:#e6edf7;--muted:#8a96b0;--dim:#5b6580;
  --brand:#00d084;--brand-2:#00b874;--brand-soft:rgba(0,208,132,.12);
  --accent:#4721fb;--accent-2:#7a00df;
  --teal:#31cdcf;--warn:#ffb547;--danger:#ff5577;
  --r-sm:8px;--r-md:14px;--r-lg:22px;--r-xl:30px;
  --shadow-1:0 6px 24px rgba(0,0,0,.45);
  --shadow-glow:0 0 60px rgba(0,208,132,.18);
  --gradient-brand:linear-gradient(135deg,var(--brand),var(--teal));
}

/* ---------- Base ---------- */
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.7;font-size:15px;
  overflow-x:hidden;-webkit-font-smoothing:antialiased
}
img,svg{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{list-style:none}
h1,h2,h3,h4{font-weight:700;line-height:1.25;color:#fff;letter-spacing:.2px}
h1{font-size:clamp(28px,4.4vw,48px)}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:clamp(18px,2vw,22px)}
h4{font-size:17px}
p{color:var(--muted)}
.container{max-width:1240px;margin:0 auto;padding:0 22px}

/* ---------- Gradient Text Utility ---------- */
.gradient-text{
  background:var(--gradient-brand);
  -webkit-background-clip:text;background-clip:text;color:transparent
}

/* ---------- Section Head ---------- */
section{padding:80px 0;position:relative}
.sec-head{text-align:center;max-width:720px;margin:0 auto 56px}
.sec-eyebrow{
  display:inline-block;font-size:12.5px;color:var(--brand);font-weight:700;
  letter-spacing:2px;text-transform:uppercase;margin-bottom:12px;
  background:var(--brand-soft);padding:5px 12px;border-radius:99px
}
.sec-head h2{margin-bottom:14px}
.sec-head h2 .gr{background:var(--gradient-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-head p{font-size:16px;color:var(--muted)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:13px 22px;
  border-radius:var(--r-md);font-weight:600;font-size:14.5px;
  transition:all .2s ease;cursor:pointer;border:1px solid transparent;
  text-decoration:none
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#001b14;box-shadow:0 6px 18px rgba(0,208,132,.25)
}
.btn-primary:hover{color:#001b14;transform:translateY(-1px)}
.btn-ghost{
  background:rgba(255,255,255,.04);color:#fff;border-color:var(--line-2)
}
.btn-ghost:hover{color:#fff;background:rgba(255,255,255,.08);border-color:var(--brand)}

/* ---------- Notice Bar ---------- */
.notice{
  background:linear-gradient(90deg,#001b14,#021b16);
  border-bottom:1px solid #06342b;color:#9be5c4;font-size:13px;padding:8px 0
}
.notice .container{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.notice .dot{
  width:7px;height:7px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 10px var(--brand);animation:pulse 1.6s infinite
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* ---------- Navigation ---------- */
.nav{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,13,.78);backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{
  display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;
  letter-spacing:.3px;color:#fff
}
.brand img{height:34px;width:auto}
.brand .accent{color:var(--brand)}
.menu{display:flex;gap:6px;align-items:center}
.menu a{
  font-size:14.5px;padding:9px 14px;border-radius:var(--r-sm);
  color:var(--muted);font-weight:500
}
.menu a:hover{color:#fff;background:rgba(255,255,255,.04)}
.menu a.active{color:var(--brand);background:var(--brand-soft)}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#001b14;padding:10px 18px;border-radius:var(--r-sm);
  font-weight:700;font-size:14px;box-shadow:0 6px 20px rgba(0,208,132,.25)
}
.menu-btn{
  display:none;width:38px;height:38px;border-radius:8px;
  background:rgba(255,255,255,.04);align-items:center;justify-content:center
}
.menu-btn span{display:block;width:18px;height:2px;background:#fff;position:relative}
.menu-btn span:before,.menu-btn span:after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff
}
.menu-btn span:before{top:-6px}
.menu-btn span:after{top:6px}
@media (max-width:880px){
  .menu{display:none}.menu-btn{display:flex}
  .menu.open{
    display:flex;position:absolute;top:68px;left:0;right:0;
    background:var(--bg-2);flex-direction:column;padding:14px;
    border-bottom:1px solid var(--line)
  }
  .menu.open a{width:100%;padding:12px;border-radius:8px}
}

/* ---------- Footer ---------- */
footer{background:#03060d;border-top:1px solid var(--line);padding:60px 0 24px}
.foot-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px
}
@media (max-width:880px){.foot-grid{grid-template-columns:1fr 1fr;gap:30px}}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;font-weight:800;font-size:18px}
.foot-brand img{height:30px}
.foot-brand .foot-accent{color:var(--brand)}
.foot-desc{font-size:13.5px;color:var(--dim);line-height:1.7;max-width:280px}
.foot-col h5{
  color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;
  letter-spacing:.5px;text-transform:uppercase
}
.foot-col ul li{margin-bottom:10px}
.foot-col ul li a{font-size:13.5px;color:var(--dim);transition:color .2s}
.foot-col ul li a:hover{color:var(--brand)}
.foot-bot{
  border-top:1px solid var(--line);padding-top:24px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px
}
.foot-copy{font-size:12.5px;color:var(--dim)}
.foot-legal{display:flex;gap:18px;flex-wrap:wrap}
.foot-legal a{font-size:12.5px;color:var(--dim)}
.foot-legal a:hover{color:var(--brand)}

/* ---------- CTA Section ---------- */
.cta{
  position:relative;padding:90px 0;text-align:center;
  background:linear-gradient(135deg,#021b14 0%,#04081a 50%,#0a0820 100%);
  overflow:hidden
}
.cta::before{
  content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:900px;height:900px;background:radial-gradient(circle,rgba(0,208,132,.15),transparent 60%);
  pointer-events:none
}
.cta-content{position:relative;z-index:1}
.cta h2{margin-bottom:18px}
.cta p{font-size:16.5px;color:var(--muted);max-width:560px;margin:0 auto 32px}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- Page Hero ---------- */
.page-hero{padding:70px 0 30px;position:relative;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;top:-200px;left:50%;transform:translateX(-50%);
  width:1000px;height:1000px;background:radial-gradient(circle,rgba(0,208,132,.12),transparent 60%);
  pointer-events:none
}
.page-hero h1{text-align:center;margin-bottom:14px}
.page-hero p.lead{text-align:center;max-width:720px;margin:0 auto;font-size:17px}

/* ---------- Meta Row (about/terms/privacy) ---------- */
.meta-row{
  display:flex;gap:14px;justify-content:center;flex-wrap:wrap;
  margin-top:18px;font-size:12.5px;color:var(--dim)
}
.meta-row span{
  padding:4px 10px;background:var(--panel);
  border:1px solid var(--line);border-radius:99px
}

/* ---------- Policy / Legal Content (privacy/terms) ---------- */
.layout{display:grid;grid-template-columns:260px 1fr;gap:40px;margin-top:30px}
@media (max-width:880px){.layout{grid-template-columns:1fr;gap:24px}}
.toc{
  position:sticky;top:88px;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;align-self:start;
  max-height:calc(100vh - 100px);overflow:auto
}
@media (max-width:880px){.toc{position:static;max-height:none}}
.toc h4{
  font-size:13px;color:var(--brand);letter-spacing:1px;
  text-transform:uppercase;margin-bottom:14px;font-weight:700
}
.toc ul li{margin-bottom:8px}
.toc ul li a{
  font-size:13.5px;color:var(--muted);padding:6px 10px;
  border-radius:6px;display:block;border-left:2px solid transparent
}
.toc ul li a:hover{color:#fff;background:rgba(0,208,132,.05);border-left-color:var(--brand)}
.policy-content > section{padding:0;margin-bottom:36px;scroll-margin-top:90px}
.policy-content h2{font-size:24px;margin-bottom:14px;color:#fff;padding-top:14px;border-top:1px solid var(--line)}
.policy-content h2:first-child{border-top:0;padding-top:0}
.policy-content h3{font-size:18px;margin:18px 0 10px;color:#fff}
.policy-content p{margin-bottom:12px;font-size:14.5px;line-height:1.8}
.policy-content ul,.policy-content ol{margin:12px 0;padding-left:24px}
.policy-content ul li,.policy-content ol li{
  list-style:disc;color:var(--muted);font-size:14.5px;
  margin-bottom:8px;line-height:1.75
}
.policy-content ol li{list-style:decimal}
.warning{
  background:rgba(255,181,71,.06);border:1px solid rgba(255,181,71,.3);
  border-left:3px solid #ffb547;border-radius:var(--r-md);
  padding:18px 20px;margin:18px 0
}
.warning p{margin:0;color:var(--text);font-size:14px}
.highlight{
  background:linear-gradient(135deg,rgba(0,208,132,.08),rgba(71,33,251,.05));
  border:1px solid rgba(0,208,132,.25);border-left:3px solid var(--brand);
  border-radius:var(--r-md);padding:18px 20px;margin:18px 0
}
.highlight p{margin:0;color:var(--text);font-size:14px}

/* ---------- Page Hero h1 gradient text ---------- */
.page-hero h1 .gr{background:var(--gradient-brand);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- CTA h2 gradient text ---------- */
.cta h2 .gr{background:var(--gradient-brand);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- Navigation JS ---------- */