/* ============================================================
   Safew 官方下载站 · 全局样式
   主题：深紫黑 + 紫罗兰渐变
   ============================================================ */

:root{
  --bg-0:#0B0714;
  --bg-1:#140E26;
  --bg-2:#1B1332;
  --bg-3:#241844;
  --line:rgba(168,85,247,.16);
  --line-strong:rgba(168,85,247,.38);
  --brand:#8B5CF6;
  --brand-2:#A855F7;
  --brand-3:#C084FC;
  --brand-deep:#6D28D9;
  --text-1:#F4F1FF;
  --text-2:#B9AED9;
  --text-3:#7E739F;
  --ok:#34D399;
  --warn:#FBBF24;
  --radius:16px;
  --radius-lg:22px;
  --maxw:1200px;
  --shadow:0 20px 60px -20px rgba(124,58,237,.45);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg-0);
  color:var(--text-1);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}

.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 背景氛围 ---------- */
body::before{
  content:"";position:fixed;inset:0;z-index:-1;
  background:
    radial-gradient(900px 500px at 80% -10%, rgba(139,92,246,.22), transparent 60%),
    radial-gradient(700px 400px at 0% 20%, rgba(109,40,217,.18), transparent 60%),
    radial-gradient(600px 500px at 50% 110%, rgba(168,85,247,.12), transparent 60%),
    var(--bg-0);
}

/* ---------- 顶部导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  backdrop-filter:blur(14px);
  background:rgba(11,7,20,.72);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;letter-spacing:.5px}
.brand img{width:34px;height:34px}
.brand .b-name{background:linear-gradient(90deg,#fff,var(--brand-3));-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{
  padding:8px 16px;border-radius:10px;color:var(--text-2);font-size:15px;
  transition:.2s;
}
.nav-links a:hover{color:#fff;background:rgba(139,92,246,.12)}
.nav-links a.active{color:#fff;background:rgba(139,92,246,.18)}
.nav-cta{
  padding:9px 20px;border-radius:10px;font-size:14px;font-weight:600;
  background:linear-gradient(135deg,var(--brand-2),var(--brand-deep));
  color:#fff;box-shadow:0 8px 24px -8px rgba(139,92,246,.7);
  transition:.2s;
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 12px 28px -8px rgba(139,92,246,.85)}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:26px;cursor:pointer}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 28px;border-radius:12px;font-weight:600;font-size:15px;
  cursor:pointer;border:0;transition:.2s;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand-2),var(--brand-deep));
  color:#fff;box-shadow:0 10px 30px -8px rgba(139,92,246,.75);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px -8px rgba(139,92,246,.9)}
.btn-ghost{
  background:rgba(255,255,255,.04);color:#fff;
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{background:rgba(139,92,246,.14)}
.btn svg{width:18px;height:18px}

/* ---------- Hero ---------- */
.hero{padding:150px 0 80px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:rgba(139,92,246,.12);border:1px solid var(--line);color:var(--brand-3);
  margin-bottom:22px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px var(--ok)}
h1{
  font-size:52px;line-height:1.15;font-weight:800;letter-spacing:-.5px;
  margin-bottom:22px;
}
h1 .grad{
  background:linear-gradient(120deg,var(--brand-3),var(--brand-2) 50%,#fff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{font-size:18px;color:var(--text-2);max-width:540px;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.hero-meta{display:flex;gap:28px;color:var(--text-3);font-size:14px;flex-wrap:wrap}
.hero-meta b{color:var(--text-1);font-size:20px;display:block}
.hero-visual{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.hero-visual img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 60%,rgba(11,7,20,.4));
}

/* ---------- 通用 section ---------- */
section{padding:90px 0}
.section-head{max-width:680px;margin:0 auto 56px;text-align:center}
.section-head .tag{
  font-size:13px;letter-spacing:2px;color:var(--brand-3);
  text-transform:uppercase;font-weight:600;
}
.section-head h2{font-size:38px;line-height:1.25;margin:12px 0 14px;font-weight:800}
.section-head p{color:var(--text-2);font-size:16px}

/* ---------- 功能卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{
  background:linear-gradient(180deg,rgba(139,92,246,.06),rgba(139,92,246,.02));
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;transition:.25s;
}
.card:hover{border-color:var(--line-strong);transform:translateY(-4px);background:linear-gradient(180deg,rgba(139,92,246,.1),rgba(139,92,246,.04))}
.card .icon{
  width:48px;height:48px;border-radius:12px;display:grid;place-items:center;
  background:rgba(139,92,246,.15);color:var(--brand-3);margin-bottom:18px;
}
.card .icon svg{width:24px;height:24px}
.card h3{font-size:19px;margin-bottom:10px;font-weight:700}
.card p{color:var(--text-2);font-size:14.5px}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:linear-gradient(135deg,rgba(139,92,246,.12),rgba(109,40,217,.06));
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:40px 20px;text-align:center;
}
.stats .num{
  font-size:38px;font-weight:800;
  background:linear-gradient(120deg,#fff,var(--brand-3));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stats .lbl{color:var(--text-3);font-size:14px;margin-top:4px}

/* ---------- 双栏展示 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split img{border-radius:var(--radius-lg);border:1px solid var(--line);box-shadow:var(--shadow)}
.split h2{font-size:34px;line-height:1.25;margin-bottom:18px;font-weight:800}
.split p{color:var(--text-2);margin-bottom:18px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;margin-bottom:14px;color:var(--text-2);
}
.check-list svg{width:20px;height:20px;color:var(--brand-3);flex-shrink:0;margin-top:3px}

/* ---------- 平台下载按钮 ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.dl-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px;text-align:center;transition:.25s;
}
.dl-card:hover{border-color:var(--line-strong);transform:translateY(-4px)}
.dl-card .os{font-size:20px;font-weight:700;margin:14px 0 6px}
.dl-card .ver{color:var(--text-3);font-size:13px;margin-bottom:20px}
.dl-card .icon-big{
  width:64px;height:64px;margin:0 auto;border-radius:16px;
  background:rgba(139,92,246,.14);display:grid;place-items:center;color:var(--brand-3);
}
.dl-card .icon-big svg{width:32px;height:32px}
.size-tag{
  display:inline-block;padding:3px 10px;border-radius:6px;font-size:12px;
  background:rgba(52,211,153,.12);color:var(--ok);margin-top:14px;
}

/* ---------- FAQ ---------- */
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius);
  margin-bottom:14px;background:rgba(255,255,255,.02);overflow:hidden;
}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;
  padding:20px 24px;background:none;border:0;color:#fff;font-size:16px;font-weight:600;
  cursor:pointer;text-align:left;font-family:inherit;
}
.faq-q .arrow{transition:.25s;color:var(--brand-3)}
.faq-item.open .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 24px 20px;color:var(--text-2);font-size:15px}

/* ---------- 客户端特性时间线/流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.step{
  position:relative;padding:28px;border-radius:var(--radius-lg);
  background:var(--bg-2);border:1px solid var(--line);
}
.step .n{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-2),var(--brand-deep));
  font-weight:800;margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{color:var(--text-2);font-size:14.5px}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  text-align:center;padding:70px 40px;border-radius:var(--radius-lg);
  background:
    radial-gradient(600px 200px at 50% 0%,rgba(168,85,247,.25),transparent),
    linear-gradient(135deg,#241447,#160C2E);
  border:1px solid var(--line-strong);
}
.cta-band h2{font-size:34px;margin-bottom:14px;font-weight:800}
.cta-band p{color:var(--text-2);margin-bottom:28px}

/* ---------- 页脚 ---------- */
footer{
  border-top:1px solid var(--line);padding:60px 0 30px;margin-top:40px;
  background:rgba(0,0,0,.25);
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.foot-brand p{color:var(--text-3);font-size:14px;margin-top:14px;max-width:300px}
.foot-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600}
.foot-col a{display:block;color:var(--text-3);font-size:14px;margin-bottom:10px;transition:.2s}
.foot-col a:hover{color:var(--brand-3)}
.foot-bottom{
  border-top:1px solid var(--line);padding-top:24px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  color:var(--text-3);font-size:13px;
}

/* ---------- 面包屑/页头内页 ---------- */
.page-head{padding:140px 0 50px;text-align:center}
.page-head h1{font-size:44px;margin-bottom:14px}
.page-head p{color:var(--text-2);max-width:620px;margin:0 auto}

/* ---------- 表格 ---------- */
table.cmp{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
table.cmp th,table.cmp td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px}
table.cmp th{background:rgba(139,92,246,.1);color:#fff;font-weight:600}
table.cmp td{color:var(--text-2)}
table.cmp tr:last-child td{border-bottom:0}
table.cmp .yes{color:var(--ok);font-weight:600}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .hero{padding:120px 0 60px}
  .hero-grid,.split{grid-template-columns:1fr;gap:36px}
  h1{font-size:36px}
  .grid-3,.grid-4,.dl-grid,.steps{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links{
    position:fixed;top:64px;left:0;right:0;flex-direction:column;
    background:rgba(11,7,20,.98);padding:16px;display:none;
    border-bottom:1px solid var(--line);
  }
  .nav-links.open{display:flex}
  .nav-links a{width:100%;text-align:center}
  .nav-toggle{display:block}
  .nav-cta{display:none}
  section{padding:60px 0}
  .section-head h2,.split h2{font-size:28px}
}
@media (max-width:560px){
  .grid-3,.grid-4,.dl-grid,.steps{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  h1{font-size:30px}
}