/* ============ 基础重置 ============ */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#070B1E;
  --bg-2:#0B1130;
  --panel:#111842;
  --panel-2:#0E1435;
  --line:rgba(76,111,255,.16);
  --txt:#E6EAF7;
  --txt-dim:#8E97C2;
  --txt-mute:#5B648C;
  --brand:#4C6FFF;
  --brand-2:#6B8BFF;
  --cyan:#22D3EE;
  --green:#34D399;
  --amber:#FBBF24;
  --grad:linear-gradient(135deg,#4C6FFF 0%,#22D3EE 100%);
  --grad-soft:linear-gradient(135deg,rgba(76,111,255,.16),rgba(34,211,238,.10));
  --radius:16px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
  background:
    radial-gradient(1200px 600px at 80% -10%,rgba(76,111,255,.18),transparent 60%),
    radial-gradient(900px 500px at -10% 10%,rgba(34,211,238,.12),transparent 55%),
    var(--bg);
  color:var(--txt);
  line-height:1.7;
  min-height:100vh;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}

/* ============ 顶部导航 ============ */
header.navbar{
  position:sticky;top:0;z-index:50;
  background:rgba(7,11,30,.72);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1240px;margin:0 auto;
  padding:14px 28px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:18px}
.brand .logo{
  width:38px;height:38px;border-radius:10px;
  background:var(--grad);
  display:grid;place-items:center;
  box-shadow:0 6px 18px rgba(76,111,255,.5);
}
.brand .logo svg{width:22px;height:22px}
.brand small{display:block;font-size:11px;color:var(--txt-dim);font-weight:400;letter-spacing:.5px}
nav.menu{display:flex;align-items:center;gap:6px}
nav.menu a{
  padding:9px 16px;border-radius:10px;
  color:var(--txt-dim);font-size:14.5px;font-weight:500;
  transition:.2s;display:flex;align-items:center;gap:7px;
}
nav.menu a svg{width:16px;height:16px}
nav.menu a:hover{color:var(--txt);background:rgba(255,255,255,.04)}
nav.menu a.active{color:var(--txt);background:rgba(76,111,255,.16);box-shadow:inset 0 0 0 1px var(--line)}
.cta-top{
  padding:9px 18px;border-radius:10px;
  background:var(--grad);color:#fff;font-weight:600;font-size:14px;
  display:flex;align-items:center;gap:7px;
  box-shadow:0 8px 20px rgba(76,111,255,.4);transition:.2s;
}
.cta-top:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(76,111,255,.55)}
.cta-top svg{width:16px;height:16px}

main{max-width:1240px;margin:0 auto;padding:0 28px}

/* ============ 通用组件 ============ */
.section{padding:72px 0}
.section-head{text-align:center;max-width:760px;margin:0 auto 48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--grad-soft);border:1px solid var(--line);
  color:var(--brand-2);font-size:13px;font-weight:600;letter-spacing:.3px;
  margin-bottom:18px;
}
.eyebrow svg{width:14px;height:14px}
.section-title{font-size:34px;font-weight:800;letter-spacing:-.5px;line-height:1.25}
.section-title .accent{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.section-desc{color:var(--txt-dim);margin-top:14px;font-size:16px}

.grid{display:grid;gap:22px}
.card{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;transition:.25s;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-4px);border-color:rgba(76,111,255,.5);box-shadow:var(--shadow)}
.card .ico{
  width:48px;height:48px;border-radius:12px;
  background:var(--grad-soft);border:1px solid var(--line);
  display:grid;place-items:center;margin-bottom:16px;color:var(--brand-2);
}
.card .ico svg{width:24px;height:24px}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--txt-dim);font-size:14.5px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{font-size:12px;padding:4px 10px;border-radius:999px;background:rgba(255,255,255,.05);color:var(--txt-dim);border:1px solid var(--line)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;border-radius:12px;font-weight:600;font-size:15px;cursor:pointer;
  transition:.2s;border:none;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(76,111,255,.45)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(76,111,255,.6)}
.btn-ghost{background:rgba(255,255,255,.05);color:var(--txt);border:1px solid var(--line)}
.btn-ghost:hover{background:rgba(255,255,255,.09);border-color:var(--brand)}

/* ============ 首页 HERO ============ */
.hero{padding:80px 0 64px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;border:1px solid var(--line);
  background:var(--grad-soft);color:var(--brand-2);font-size:13px;font-weight:600;margin-bottom:22px;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green)}
.hero h1{font-size:52px;line-height:1.12;font-weight:800;letter-spacing:-1px}
.hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p.lead{color:var(--txt-dim);font-size:17px;margin:22px 0 30px;max-width:560px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:34px;margin-top:40px;padding-top:30px;border-top:1px solid var(--line)}
.hero-stats .st b{font-size:30px;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:block}
.hero-stats .st span{color:var(--txt-mute);font-size:13px}

/* hero 可视化卡片 */
.hero-visual{position:relative}
.hero-screen{
  border-radius:18px;border:1px solid var(--line);overflow:hidden;
  background:linear-gradient(180deg,#0C1340,#080D28);
  box-shadow:var(--shadow);position:relative;
}
.hero-screen .bar{
  display:flex;align-items:center;gap:7px;padding:12px 16px;
  border-bottom:1px solid var(--line);background:rgba(255,255,255,.02);
}
.hero-screen .bar i{width:11px;height:11px;border-radius:50%;display:block}
.hero-screen .bar i:nth-child(1){background:#FF5F57}
.hero-screen .bar i:nth-child(2){background:#FEBC2E}
.hero-screen .bar i:nth-child(3){background:#28C840}
.hero-screen .bar .url{margin-left:14px;font-size:12px;color:var(--txt-mute)}
.hero-screen .body{padding:20px;display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.hw-item{
  background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:12px;padding:14px;
}
.hw-item .lbl{font-size:11px;color:var(--txt-mute);text-transform:uppercase;letter-spacing:1px;display:flex;align-items:center;gap:6px}
.hw-item .lbl svg{width:13px;height:13px}
.hw-item .val{font-size:15px;font-weight:700;margin-top:6px}
.hw-item .val .ok{color:var(--green);font-size:12px}
.hw-meter{position:absolute;right:-18px;bottom:-18px;width:120px;height:120px;border-radius:50%;
  background:conic-gradient(var(--brand) 0 78%,rgba(255,255,255,.08) 0 100%);
  display:grid;place-items:center;box-shadow:0 12px 30px rgba(76,111,255,.4)}
.hw-meter::after{content:"78℃\A 安全";white-space:pre;text-align:center;font-size:13px;font-weight:700;
  width:86px;height:86px;border-radius:50%;background:var(--bg-2);display:grid;place-items:center;color:var(--txt)}

/* 浮动小徽章 */
.float-badge{
  position:absolute;display:flex;align-items:center;gap:8px;
  padding:10px 14px;border-radius:12px;background:rgba(7,11,30,.85);
  border:1px solid var(--line);backdrop-filter:blur(8px);box-shadow:var(--shadow);font-size:13px;font-weight:600;
}
.float-badge svg{width:16px;height:16px}
.fb-1{top:18px;left:-26px;color:var(--green)}
.fb-2{bottom:60px;left:-34px;color:var(--brand-2)}

/* ============ 优势网格 ============ */
.adv-grid{grid-template-columns:repeat(3,1fr)}
.adv-grid .card .ico{color:var(--cyan)}

/* ============ 评价 ============ */
.testi-grid{grid-template-columns:repeat(3,1fr)}
.testi{display:flex;flex-direction:column;gap:14px}
.stars{color:var(--amber);letter-spacing:3px;font-size:16px}
.testi p{color:var(--txt);font-size:15px;font-style:italic}
.testi .who{display:flex;align-items:center;gap:12px;margin-top:6px}
.testi .avatar{width:42px;height:42px;border-radius:50%;background:var(--grad);display:grid;place-items:center;font-weight:700;color:#fff}
.testi .who b{font-size:14px}
.testi .who span{display:block;font-size:12px;color:var(--txt-mute)}

/* ============ 用例 ============ */
.use-grid{grid-template-columns:repeat(3,1fr)}
.use-card{padding:0;overflow:hidden}
.use-card .top{height:130px;background:var(--grad-soft);display:grid;place-items:center;border-bottom:1px solid var(--line)}
.use-card .top svg{width:40px;height:40px;color:var(--brand-2)}
.use-card .cnt{padding:22px}
.use-card h3{margin-bottom:8px}

/* ============ 统计条 ============ */
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:linear-gradient(135deg,rgba(76,111,255,.12),rgba(34,211,238,.06));
  border:1px solid var(--line);border-radius:var(--radius);padding:40px;margin-top:20px}
.stats-band .st{text-align:center}
.stats-band .st b{font-size:40px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stats-band .st span{color:var(--txt-dim);font-size:14px}

/* ============ 下载页 ============ */
.dl-hero{text-align:center;padding:60px 0 30px}
.version-pill{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  background:var(--grad-soft);border:1px solid var(--line);color:var(--green);font-weight:600;font-size:13px;margin-bottom:18px;
}
.version-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green)}
.dl-hero h2{font-size:38px;font-weight:800}
.dl-hero p{color:var(--txt-dim);margin-top:12px}
.dl-grid{grid-template-columns:repeat(3,1fr);margin-top:40px}
.dl-card{text-align:center;padding:30px;cursor:pointer}
.dl-card .ico{width:64px;height:64px;margin:0 auto 18px;border-radius:16px}
.dl-card .ico svg{width:30px;height:30px}
.dl-card .name{font-size:19px;font-weight:700;margin-bottom:4px}
.dl-card .desc{color:var(--txt-dim);font-size:13.5px;margin-bottom:16px}
.dl-card .tag-code{display:inline-block;font-size:12px;color:var(--cyan);background:rgba(34,211,238,.1);padding:3px 10px;border-radius:6px;margin-top:6px}
.dl-card .btn{width:100%;justify-content:center}

.dl-info{display:grid;grid-template-columns:1.3fr 1fr;gap:24px;margin-top:30px}
.info-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.info-row{display:flex;justify-content:space-between;padding:13px 16px;border-radius:10px;background:rgba(255,255,255,.03);border:1px solid var(--line);font-size:14px}
.info-row .k{color:var(--txt-mute)}
.info-row .v{font-weight:600}
.preview{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:linear-gradient(180deg,#0C1340,#080D28)}
.preview .bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid var(--line)}
.preview .bar i{width:11px;height:11px;border-radius:50%}
.preview .bar i:nth-child(1){background:#FF5F57}
.preview .bar i:nth-child(2){background:#FEBC2E}
.preview .bar i:nth-child(3){background:#28C840}
.preview .ph{height:240px;display:grid;place-items:center;color:var(--txt-mute);font-size:13px;background:
  repeating-linear-gradient(45deg,rgba(255,255,255,.02) 0 12px,transparent 12px 24px)}
.preview .ph svg{width:48px;height:48px;color:var(--brand);opacity:.6;margin-bottom:10px}

/* 更新日志 */
.timeline{margin-top:30px}
.tl-item{display:flex;gap:18px;padding:18px 0;border-bottom:1px dashed var(--line)}
.tl-item .ver{
  flex:0 0 150px;font-weight:700;color:var(--brand-2);display:flex;flex-direction:column;gap:2px;
}
.tl-item .ver small{color:var(--txt-mute);font-weight:400;font-size:12px}
.tl-item ul{padding-left:16px}
.tl-item li{list-style:disc;color:var(--txt-dim);font-size:14px;margin-bottom:4px}
.tl-item li::marker{color:var(--brand)}

/* 下载说明 */
.dl-tips{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:20px}
.dl-tip{display:flex;gap:12px;align-items:flex-start;padding:18px;border-radius:12px;background:rgba(255,255,255,.03);border:1px solid var(--line)}
.dl-tip .ico{width:36px;height:36px;flex:0 0 auto;border-radius:9px;background:var(--grad-soft);display:grid;place-items:center;color:var(--brand-2)}
.dl-tip .ico svg{width:18px;height:18px}
.dl-tip b{font-size:14px}
.dl-tip p{font-size:13px;color:var(--txt-mute);margin-top:2px}

/* ============ 功能介绍页 ============ */
.feat-grid{grid-template-columns:repeat(3,1fr)}
.feat-grid .card .ico{color:var(--brand-2)}
.perf-grid{grid-template-columns:repeat(2,1fr);margin-top:30px}
.perf-card h3{font-size:20px;margin-bottom:8px}
.perf-card .sub{color:var(--txt-dim);font-size:14px;margin-bottom:16px}
.perf-card ul{display:grid;gap:10px}
.perf-card li{display:flex;align-items:center;gap:10px;color:var(--txt);font-size:14.5px}
.perf-card li svg{width:18px;height:18px;color:var(--green);flex:0 0 auto}

/* ============ 工具列表页 ============ */
.tool-filter{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:34px}
.tool-filter a{
  padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--txt-dim);font-size:13.5px;cursor:pointer;display:flex;align-items:center;gap:7px;transition:.2s;
}
.tool-filter a svg{width:15px;height:15px}
.tool-filter a:hover,.tool-filter a.active{color:var(--txt);border-color:var(--brand);background:rgba(76,111,255,.12)}
.tool-grid{grid-template-columns:repeat(4,1fr)}
.tool-card{padding:22px}
.tool-card .top{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.tool-card .app-ico{width:46px;height:46px;border-radius:11px;background:var(--grad);display:grid;place-items:center;flex:0 0 auto;color:#fff}
.tool-card .app-ico svg{width:24px;height:24px}
.tool-card .meta b{font-size:16px}
.tool-card .meta .ver{font-size:12px;color:var(--brand-2)}
.tool-card p{color:var(--txt-dim);font-size:13.5px;margin-bottom:14px}
.tool-card .foot{display:flex;justify-content:space-between;align-items:center;padding-top:14px;border-top:1px solid var(--line)}
.tool-card .size{font-size:12px;color:var(--txt-mute);display:flex;align-items:center;gap:5px}
.tool-card .size svg{width:13px;height:13px}
.tool-card .detail{font-size:13px;color:var(--brand-2);font-weight:600;display:flex;align-items:center;gap:4px}

.tool-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:40px}
.tool-stat{text-align:center;padding:26px 18px;border-radius:var(--radius);background:linear-gradient(180deg,var(--panel),var(--panel-2));border:1px solid var(--line)}
.tool-stat .ico{width:42px;height:42px;margin:0 auto 12px;border-radius:10px;background:var(--grad-soft);display:grid;place-items:center;color:var(--cyan)}
.tool-stat .ico svg{width:22px;height:22px}
.tool-stat b{font-size:28px;font-weight:800;display:block}
.tool-stat span{font-size:13px;color:var(--txt-mute)}

/* ============ 关于页 ============ */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start}
.about-card{padding:30px}
.about-card .ico{color:var(--cyan)}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.badge-row .b{display:flex;align-items:center;gap:7px;padding:8px 14px;border-radius:10px;background:rgba(255,255,255,.04);border:1px solid var(--line);font-size:13px}
.badge-row .b svg{width:15px;height:15px;color:var(--green)}
.about-side .card{padding:24px;margin-bottom:18px}
.about-side h4{font-size:15px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.about-side h4 svg{width:17px;height:17px;color:var(--brand-2)}
.contact-row{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.contact-row:last-child{border-bottom:none}
.contact-row .ico{width:36px;height:36px;border-radius:9px;background:var(--grad-soft);display:grid;place-items:center;color:var(--brand-2);flex:0 0 auto}
.contact-row .ico svg{width:18px;height:18px}
.contact-row .k{font-size:12px;color:var(--txt-mute)}
.contact-row .v{font-size:14px;font-weight:600}

/* 大事记 */
.milestone{position:relative;padding-left:32px}
.milestone::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--brand),transparent)}
.ms-item{position:relative;padding:0 0 26px 0}
.ms-item::before{content:"";position:absolute;left:-30px;top:4px;width:18px;height:18px;border-radius:50%;background:var(--bg-2);border:3px solid var(--brand);box-shadow:0 0 12px rgba(76,111,255,.6)}
.ms-item .yr{font-size:20px;font-weight:800;color:var(--brand-2)}
.ms-item p{color:var(--txt-dim);font-size:14px;margin-top:4px}

/* ============ CTA ============ */
.cta-band{margin:60px 0 0;padding:50px;text-align:center;border-radius:20px;position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(76,111,255,.22),rgba(34,211,238,.12));border:1px solid var(--line)}
.cta-band h2{font-size:32px;font-weight:800;margin-bottom:12px}
.cta-band p{color:var(--txt-dim);margin-bottom:24px}

/* ============ Footer ============ */
footer{margin-top:80px;border-top:1px solid var(--line);background:rgba(7,11,30,.6)}
.foot-inner{max-width:1240px;margin:0 auto;padding:46px 28px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.foot-inner h5{font-size:15px;margin-bottom:16px;color:var(--txt)}
.foot-inner ul{display:grid;gap:10px}
.foot-inner li a,.foot-inner li{color:var(--txt-dim);font-size:13.5px;transition:.2s;cursor:pointer}
.foot-inner li a:hover,.foot-inner li:hover{color:var(--brand-2)}
.foot-brand p{color:var(--txt-dim);font-size:13.5px;margin-top:12px;max-width:300px}
.foot-bottom{max-width:1240px;margin:0 auto;padding:18px 28px;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:var(--txt-mute);font-size:13px}

/* ============ 响应式 ============ */
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr}
  .hero h1{font-size:40px}
  .adv-grid,.testi-grid,.use-grid,.feat-grid,.dl-grid{grid-template-columns:repeat(2,1fr)}
  .tool-grid{grid-template-columns:repeat(2,1fr)}
  .stats-band,.tool-stats{grid-template-columns:repeat(2,1fr)}
  .dl-info{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr}
  .dl-tips{grid-template-columns:repeat(2,1fr)}
  .foot-inner{grid-template-columns:1fr 1fr}
  .hero-visual{margin-top:20px}
  .float-badge{display:none}
}
@media(max-width:640px){
  main{padding:0 16px}
  .nav-inner{padding:12px 16px;flex-wrap:wrap}
  nav.menu{order:3;width:100%;justify-content:center;flex-wrap:wrap}
  .hero h1{font-size:30px}
  .section-title{font-size:26px}
  .section{padding:48px 0}
  .adv-grid,.testi-grid,.use-grid,.feat-grid,.dl-grid,.tool-grid,.perf-grid,.info-list,.dl-tips{grid-template-columns:1fr}
  .stats-band,.tool-stats{grid-template-columns:1fr 1fr}
  .hero-stats{gap:18px;flex-wrap:wrap}
  .cta-band{padding:30px}
  .cta-band h2{font-size:24px}
  .tl-item{flex-direction:column}
  .tl-item .ver{flex:none}
  .foot-inner{grid-template-columns:1fr}
}