/* ===== CrystalDiskInfo 下载站 · 硬核技术风 ===== */
:root{
  --bg:#0d1117; --bg-2:#11161d; --panel:#11161d; --panel-2:#161b22;
  --line:#232a34; --line-2:#2a3441;
  --text:#e6edf3; --muted:#8b949e; --dim:#7d8896; --faint:#5b6674;
  --cyan:#22d3ee; --cyan-dim:#0e7490; --green:#3fb950; --amber:#d29922; --red:#f85149;
  --mono:ui-monospace,"Cascadia Mono","JetBrains Mono",Consolas,Menlo,monospace;
  --sans:"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --wrap:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:#c9d1d9;
  font-family:var(--sans); font-size:16px; line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%; height:auto; display:block}
a{color:var(--cyan); text-decoration:none}
.wrap{max-width:var(--wrap); margin:0 auto; padding:0 28px}

/* ---- buttons: rectangular, no glow ---- */
.btn{display:inline-flex; align-items:center; justify-content:center; gap:.5em;
  padding:12px 24px; border-radius:4px; font-weight:600; font-size:14.5px;
  border:1px solid transparent; transition:background .15s, border-color .15s, color .15s; white-space:nowrap}
.btn-primary{background:var(--cyan); color:#06131a; font-weight:700}
.btn-primary:hover{background:#67e8f9}
.btn-ghost{background:transparent; color:var(--text); border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--cyan); color:var(--cyan)}
.btn-nav{background:var(--cyan); color:#06131a; padding:9px 18px; font-weight:700; font-size:13.5px}
.btn-nav:hover{background:#67e8f9}
.btn-lg{padding:15px 34px; font-size:16px}

/* ---- kicker / mono labels ---- */
.kicker{display:block; font-family:var(--mono); font-size:12px; letter-spacing:3px;
  color:var(--cyan); margin-bottom:14px; text-transform:uppercase}
.kicker::before{content:"// "; color:var(--faint)}

/* ---- header ---- */
.site-header{position:sticky; top:0; z-index:50; background:rgba(13,17,23,.85);
  backdrop-filter:blur(10px); border-bottom:1px solid var(--line)}
.header-inner{display:flex; align-items:center; gap:26px; height:66px}
.brand img{height:40px; width:auto}
.nav{display:flex; gap:28px; margin-left:auto}
.nav a{color:var(--muted); font-size:14px; font-weight:500; letter-spacing:.3px}
.nav a:hover{color:var(--text)}

/* ---- hero ---- */
.hero{position:relative; border-bottom:1px solid var(--line); overflow:hidden}
.hero::before{content:""; position:absolute; inset:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:34px 34px; opacity:.35;
  -webkit-mask-image:radial-gradient(120% 90% at 70% 0%,#000 30%,transparent 75%);
          mask-image:radial-gradient(120% 90% at 70% 0%,#000 30%,transparent 75%)}
.hero::after{content:""; position:absolute; top:-160px; right:-120px; width:520px; height:420px;
  background:radial-gradient(closest-side,rgba(34,211,238,.10),transparent); pointer-events:none}
.hero-grid{position:relative; display:grid; grid-template-columns:1.02fr .98fr; gap:52px; align-items:center;
  padding:72px 28px 80px}
.tags{display:flex; gap:8px; flex-wrap:wrap; margin-bottom:26px; font-family:var(--mono)}
.tags span{font-size:11.5px; letter-spacing:1px; color:var(--muted);
  border:1px solid var(--line-2); border-radius:3px; padding:4px 10px; background:var(--bg-2)}
.tags span:first-child{color:var(--cyan); border-color:var(--cyan-dim)}
.hero-text h1{margin:0 0 20px; font-size:41px; line-height:1.24; color:var(--text); font-weight:800;
  letter-spacing:-.015em}
.lead{font-size:17px; color:var(--muted); margin:0 0 30px; max-width:560px}
.hero-actions{display:flex; gap:12px; flex-wrap:wrap}
.hero-stats{list-style:none; display:flex; gap:0; margin:40px 0 0; padding:0;
  border:1px solid var(--line); border-radius:6px; overflow:hidden; max-width:520px}
.hero-stats li{flex:1; padding:16px 20px; border-right:1px solid var(--line); background:var(--bg-2)}
.hero-stats li:last-child{border-right:0}
.hero-stats strong{display:block; font-family:var(--mono); font-size:24px; color:var(--text); font-weight:700}
.hero-stats span{font-size:12px; color:var(--dim)}
.hero-media img{border-radius:10px; border:1px solid var(--line); box-shadow:0 30px 60px rgba(0,0,0,.5)}

/* ---- content ---- */
.content{padding:0 28px}
.block{padding:64px 0; border-bottom:1px solid var(--line); max-width:920px; margin:0 auto; text-align:center}
.block:last-child{border-bottom:0}
h2{font-size:29px; color:var(--text); font-weight:800; margin:0 0 16px; letter-spacing:-.01em; line-height:1.3}
h3{font-size:19px; color:var(--text); font-weight:700; margin:32px 0 10px}
h4{font-size:15.5px; color:var(--cyan); font-weight:700; margin:20px 0 6px; font-family:var(--mono); letter-spacing:.5px}
p{margin:0 0 14px; color:var(--muted)}
.block p{max-width:760px; margin:0 auto 14px}

/* ---- figure ---- */
.figure{margin:28px 0 0; text-align:center}
.figure img{border:1px solid var(--line); border-radius:8px; background:var(--bg-2); margin:0 auto}
.figure figcaption{margin-top:12px; font-family:var(--mono); font-size:12px; color:var(--dim); letter-spacing:.5px}

/* ---- feature cards ---- */
.cards{display:grid; grid-template-columns:repeat(2,1fr); gap:16px; margin:26px 0 8px}
.card{background:var(--panel); border:1px solid var(--line); border-radius:6px; padding:24px 22px;
  transition:border-color .15s, background .15s; text-align:center}
.card:hover{border-color:var(--line-2); background:var(--panel-2)}
.card-ico{width:42px; height:42px; border-radius:6px; display:flex; align-items:center; justify-content:center;
  background:var(--bg); border:1px solid var(--line-2); margin:0 auto 16px}
.card-ico svg{width:22px; height:22px; stroke:var(--cyan); fill:none; stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round}
.card h3{margin:0 0 8px; font-size:17px}
.card p{margin:0; font-size:14.5px; color:var(--muted)}

/* ---- lists ---- */
.steps{margin:20px auto 0; padding:0; list-style:none; counter-reset:s; max-width:680px}
.steps li{padding:14px 18px; margin-bottom:10px; background:var(--panel);
  border:1px solid var(--line); border-radius:6px; font-size:14.5px; color:var(--muted); counter-increment:s}
.steps li strong{color:var(--text)}
.steps li::before{content:"0" counter(s) " ";
  font-family:var(--mono); font-size:13px; color:var(--cyan); font-weight:700; margin-right:4px}
.checklist{margin:18px 0 0; padding:0; list-style:none}
.checklist li{margin-bottom:9px; font-size:14.5px; color:var(--muted)}
.checklist li::before{content:"+ "; color:var(--green); font-family:var(--mono); font-weight:700; margin-right:2px}

/* ---- download ---- */
.download{max-width:920px; text-align:center; border:1px solid var(--line-2); border-radius:8px;
  background:var(--bg-2); margin:44px auto; padding:52px 28px; position:relative}
.download::before{content:""; position:absolute; inset:0; border-radius:8px;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:28px 28px; opacity:.25; pointer-events:none;
  -webkit-mask-image:radial-gradient(80% 120% at 50% 0%,#000,transparent 70%); mask-image:radial-gradient(80% 120% at 50% 0%,#000,transparent 70%)}
.download h2,.download p,.download .dl-btns{position:relative}
.download p{max-width:600px; margin:0 auto 26px}
.dl-btns{display:flex; gap:14px; justify-content:center; flex-wrap:wrap; margin-bottom:20px}
.dl-src{font-family:var(--mono); font-size:12px; color:var(--dim); margin:0 auto; letter-spacing:.3px}
.dl-src a{color:var(--cyan)}

/* ---- footer ---- */
.site-footer{background:#090c10; border-top:1px solid var(--line); margin-top:8px}
.footer-inner{display:flex; gap:48px; justify-content:space-between; padding:48px 28px 30px; flex-wrap:wrap}
.footer-brand{max-width:540px}
.footer-brand img{margin-bottom:16px}
.footer-brand p{font-size:13px; line-height:1.75; margin:0; color:var(--dim)}
.footer-nav{display:flex; flex-direction:column; gap:11px}
.footer-nav a{color:var(--muted); font-size:13.5px}
.footer-nav a:hover{color:var(--text)}
.copyright{border-top:1px solid var(--line); padding:16px 28px; font-family:var(--mono);
  font-size:12px; color:var(--faint); letter-spacing:.5px}

/* ---- responsive ---- */
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr; gap:36px; padding:48px 28px 56px}
  .hero-text h1{font-size:31px}
  .nav{display:none}
  .cards{grid-template-columns:1fr}
  .footer-inner{gap:28px}
  h2{font-size:24px}
}
@media (max-width:560px){
  .hero-stats{flex-direction:column}
  .hero-stats li{border-right:0; border-bottom:1px solid var(--line)}
  .header-inner{gap:12px}
}