/* ============================================================
   泰博 · 软件下载中心  样式
   A 深色科技风（body.theme-dark） / B 浅色加动效（body.theme-light）
   品牌色由模板内联 --brand 注入，此文件只引用变量
   ============================================================ */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  line-height:1.65;-webkit-font-smoothing:antialiased;font-size:16px;overflow-x:hidden;
}

/* ---------- 主题 A：深色科技 ---------- */
body.theme-dark{
  --bg:#070510; --surface:rgba(255,255,255,.045); --surface-2:rgba(255,255,255,.075);
  --line:rgba(255,255,255,.10); --ink:#eef0ff; --sub:#a6abcd; --muted:#757a9d;
  --card-bg:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.025));
  --grid-line:rgba(130,165,255,.13);
  --cyan:#22d3ee; --violet:#8b5cf6;
  --nav-bg:rgba(8,6,18,.62); --nav-br:rgba(255,255,255,.08);
  color:var(--ink);
  background:
    radial-gradient(60% 50% at 82% -12%, rgba(139,92,246,.20), transparent 62%),
    radial-gradient(52% 46% at 2% 104%, rgba(34,211,238,.13), transparent 58%),
    linear-gradient(180deg,#070510 0%,#0b0819 58%,#070510 100%);
}
body.theme-dark::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(72% 62% at 50% 26%,#000 0%,transparent 88%);
  mask-image:radial-gradient(72% 62% at 50% 26%,#000 0%,transparent 88%);
}
/* ---------- 主题 B：浅色加动效 ---------- */
body.theme-light{
  --bg:#fafafa; --surface:#fff; --surface-2:#fff;
  --line:#e8e8ea; --ink:#1c1c1f; --sub:#6b6b72; --muted:#9b9ba1;
  --card-bg:#fff;
  --grid-line:rgba(104,24,136,.09);
  --cyan:#0891b2; --violet:#4f46e5;
  --nav-bg:rgba(255,255,255,.82); --nav-br:rgba(24,24,27,.06);
  color:var(--ink);background:var(--bg);
}
body.theme-light::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(70% 55% at 50% 20%,#000 0%,transparent 90%);
  mask-image:radial-gradient(70% 55% at 50% 20%,#000 0%,transparent 90%);
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
svg{display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.ic{width:22px;height:22px;stroke:currentColor;stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* ---------- 导航（两种主题） ---------- */
.nav{position:fixed;inset:0 0 auto 0;height:68px;z-index:100;background:var(--nav-bg);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:border-color .25s,box-shadow .25s}
.nav.scrolled{border-bottom-color:var(--line);box-shadow:0 10px 30px -20px rgba(0,0,0,.5)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;gap:22px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:17px}
.brand .logo{width:40px;height:40px;border-radius:11px;background:var(--brand);display:flex;align-items:center;justify-content:center;color:#fff;flex:none}
.brand-logo{height:48px;width:auto;display:block;object-fit:contain}
.brand small{display:block;font-size:10.5px;font-weight:600;color:var(--sub);letter-spacing:2.4px;font-family:"Outfit",sans-serif}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{padding:8px 13px;border-radius:10px;font-size:14.5px;font-weight:500;transition:background .18s,color .18s}
.nav-links a:hover{background:var(--surface-2)}
.nav-links a.hot{color:var(--cyan);font-weight:600}
.burger{display:none;margin-left:auto;background:none;border:none;cursor:pointer;color:inherit;padding:6px}
.mobile-menu{display:none}

/* ---------- 按钮：品牌紫→靓蓝 + 青色光晕（去掉黄/橙） ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;cursor:pointer;border-radius:12px;
  font-weight:600;font-size:15px;padding:12px 22px;line-height:1;font-family:inherit;position:relative;overflow:hidden;
  color:#fff;background:linear-gradient(120deg,var(--brand) 0%,var(--violet) 100%);
  box-shadow:0 2px 4px rgba(0,0,0,.18), 0 10px 24px -12px rgba(79,70,229,.75), inset 0 0 0 1px rgba(34,211,238,.18);
  transition:transform .2s cubic-bezier(.16,1,.3,1),box-shadow .3s,filter .3s;
}
.btn::before{content:"";position:absolute;top:0;left:-85%;width:45%;height:100%;background:linear-gradient(120deg,transparent,rgba(255,255,255,.5),transparent);transform:skewX(-18deg);transition:left .6s ease;pointer-events:none}
.btn:hover::before{left:140%}
.btn:hover{box-shadow:0 14px 34px -12px rgba(79,70,229,.9), 0 0 0 1px rgba(34,211,238,.5), 0 0 26px -2px rgba(34,211,238,.45);filter:saturate(1.1)}
.btn:active{transform:translateY(1px) scale(.98)}
.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

/* ---------- 页头 ---------- */
main{padding:calc(68px + 52px) 0 90px}
.dl-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:2px;font-weight:600;color:var(--cyan);text-transform:uppercase;margin-bottom:14px}
.dl-eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.dl-head h1{font-size:40px;font-weight:800;letter-spacing:-.8px;line-height:1.15}
body.theme-dark .dl-head h1{background:linear-gradient(100deg,#fff 30%,#a5b4fc 70%,#67e8f9);-webkit-background-clip:text;background-clip:text;color:transparent}
.dl-head p{color:var(--sub);font-size:16px;margin-top:12px;max-width:640px}

/* 公告条 */
.dl-notice{display:flex;align-items:flex-start;gap:10px;margin:24px 0 6px;padding:14px 18px;border-radius:14px;font-size:14px;line-height:1.7;
  background:linear-gradient(100deg,rgba(34,211,238,.12),rgba(139,92,246,.12));border:1px solid var(--line);border-left:3px solid var(--cyan);color:var(--ink);position:relative;overflow:hidden}
.dl-notice .ic{width:18px;height:18px;color:var(--cyan);margin-top:2px;flex:none}
body.theme-dark .dl-notice{background:linear-gradient(100deg,rgba(34,211,238,.10),rgba(139,92,246,.10))}

/* 搜索 */
.dl-search{display:flex;align-items:center;gap:12px;margin:26px 0 30px;padding:14px 20px;border-radius:16px;background:var(--surface);border:1px solid var(--line);position:relative;transition:box-shadow .3s,border-color .3s}
.dl-search:focus-within{border-color:var(--cyan);box-shadow:0 0 0 4px rgba(34,211,238,.14), 0 18px 40px -24px rgba(34,211,238,.6)}
.dl-search .ic{color:var(--muted);width:18px;height:18px}
.dl-search input{flex:1;border:none;outline:none;background:transparent;font-size:15.5px;color:var(--ink);font-family:inherit}
.dl-search input::placeholder{color:var(--muted)}
.dl-search kbd{font-family:"Outfit",sans-serif;font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:3px 7px}

/* ---------- 卡片网格 ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;perspective:1400px}

.dl-card{
  position:relative;border-radius:18px;padding:22px;display:flex;flex-direction:column;
  background:var(--card-bg);border:1px solid var(--line);
  will-change:transform;
  transition:border-color .3s,box-shadow .3s;
}
body.theme-light .dl-card{box-shadow:0 1px 2px rgba(24,24,27,.04),0 10px 26px -18px rgba(24,24,27,.22)}
body.theme-dark .dl-card{box-shadow:0 20px 50px -30px rgba(0,0,0,.9)}
.dl-card.hide{display:none}

/* 卡内各层（默认隐藏，hover 显现）
   .dl-card__clip 把内部装饰裁剪在卡片内，避免溢出到相邻卡片 */
.dl-card__clip{position:absolute;inset:0;border-radius:18px;overflow:hidden;pointer-events:none;z-index:1}
.dl-card__glow,.dl-card__grid,.dl-card__scan{position:absolute;inset:0;border-radius:18px;pointer-events:none;opacity:0}
.dl-card__glow{
  background:radial-gradient(220px 220px at var(--mx,50%) var(--my,50%), rgba(34,211,238,.22), rgba(139,92,246,.14) 40%, transparent 70%);
  transition:opacity .35s;
}
body.theme-light .dl-card__glow{background:radial-gradient(220px 220px at var(--mx,50%) var(--my,50%), rgba(79,70,229,.14), rgba(8,145,178,.10) 40%, transparent 70%)}
.dl-card__grid{
  background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
  background-size:22px 22px;transition:opacity .4s;
}
.dl-card__beam{
  position:absolute;pointer-events:none;opacity:0;z-index:4;
  inset:-1px;border-radius:19px;padding:1px;
  background:conic-gradient(from calc(var(--ang,0) * 1deg), transparent 0deg, var(--cyan) 40deg, var(--violet) 80deg, transparent 140deg, transparent 360deg);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  transition:opacity .3s;
}
.dl-card__scan{
  top:0;bottom:auto;height:30%;
  background:linear-gradient(180deg,transparent,rgba(34,211,238,.55),transparent);
  filter:blur(2px);
}
.dl-card__inner{position:relative;z-index:2;display:flex;flex-direction:column;flex:1}

.dl-top{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.dl-ico-wrap{position:relative;width:52px;height:52px;flex:none;border-radius:14px;overflow:hidden;background:var(--surface-2);display:flex;align-items:center;justify-content:center;transition:transform .3s}
.dl-ico{width:40px;height:40px;object-fit:contain}
.dl-letter{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:22px;color:#fff;font-family:"Outfit",sans-serif}
.dl-ico-shine{position:absolute;inset:0;background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.55) 50%,transparent 70%);transform:translateX(-120%);pointer-events:none}
.dl-name{font-size:16.5px;font-weight:700;line-height:1.3}
.dl-ver{font-size:12.5px;color:var(--cyan);margin-top:3px;font-family:"Courier New",monospace;letter-spacing:.4px}
body.theme-light .dl-ver{color:#0e7490}
.dl-desc{font-size:13.5px;color:var(--sub);line-height:1.7;flex:1;margin-bottom:18px}
.dl-foot{margin-top:auto}
.dl-btn{width:100%}

.dl-particles{position:absolute;inset:0;pointer-events:none;z-index:3}
.dl-p{position:absolute;width:5px;height:5px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);opacity:0}

.dl-count{color:var(--muted);font-size:13px;margin-top:26px}
.dl-count b{color:var(--ink)}
.dl-empty{display:none;text-align:center;color:var(--muted);padding:64px 0;font-size:15px}

/* 主题对照开关（仅对比用，可删） */
.themepill{position:fixed;right:20px;bottom:20px;z-index:120;display:flex;gap:6px;padding:6px;border-radius:999px;background:var(--surface);border:1px solid var(--line);backdrop-filter:blur(10px)}
.themepill a{font-size:12.5px;font-weight:600;padding:7px 14px;border-radius:999px;color:var(--sub);transition:background .2s,color .2s}
.themepill a.on{background:linear-gradient(120deg,var(--brand),var(--violet));color:#fff}

footer{border-top:1px solid var(--line);margin-top:40px;padding:34px 0;color:var(--muted);font-size:12.5px;text-align:center;position:relative;z-index:1}

@media(max-width:1020px){
  .dl-grid{grid-template-columns:repeat(2,1fr);perspective:none}
  .dl-card__inner{transform:none}
}
@media(max-width:640px){
  .dl-grid{grid-template-columns:1fr}
  .nav-links{display:none}.burger{display:block}
  .mobile-menu{display:none;position:fixed;top:68px;left:0;right:0;background:var(--nav-bg);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);padding:12px 20px 20px;z-index:200}
  .mobile-menu.open{display:block}
  .mobile-menu a{display:block;padding:14px 6px;font-size:15.5px;font-weight:500;border-bottom:1px solid var(--line)}
  .mobile-menu a:last-child{border-bottom:none}
  .dl-head h1{font-size:29px}
}
@media(prefers-reduced-motion:reduce){
  .btn::before,.dl-ico-shine{display:none}
}