/* wuzui-sefang.cn — 家庭影音技术站 */
:root{
  --bg:#081019;
  --bg2:#0d1a28;
  --card:#102335;
  --line:#1d3850;
  --fg:#dce9f3;
  --dim:#8aa3b8;
  --cyan:#35d0c8;
  --blue:#6fa8dc;
  --warn:#f2a65a;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--fg);font-family:var(--sans);
  line-height:1.76;font-size:16px;overflow-x:hidden;
}
img,svg{max-width:100%;height:auto}
a{color:var(--cyan)}
a:hover{color:#7deee6}

.wrap{width:100%;max-width:1080px;margin:0 auto;padding:0 18px}

.hero{
  background:radial-gradient(120% 140% at 20% 0%,#12293d 0%,#081019 70%);
  border-bottom:1px solid var(--line);padding:22px 0 26px;
}
.hero-grid{display:grid;grid-template-columns:1fr;gap:16px;align-items:center}
.hero-dia{width:150px;justify-self:start}
.eyebrow{margin:0 0 .4rem;font-family:var(--mono);font-size:.74rem;letter-spacing:.24em;color:var(--cyan)}
h1{
  margin:0;font-size:clamp(1.55rem,6.3vw,2.9rem);line-height:1.22;font-weight:800;
  color:#fff;letter-spacing:.01em;
}
.h1-tag{
  display:block;margin-top:.45rem;font-size:clamp(.85rem,3.1vw,1.08rem);
  font-weight:500;color:var(--blue);letter-spacing:.05em;
}

h2{font-size:clamp(1.1rem,4vw,1.42rem);margin:0 0 .7rem;color:#fff;font-weight:700}
p{margin:0 0 .85rem}
.sub{color:var(--dim)}
.caveat{font-size:.86rem;color:var(--dim);border-left:3px solid var(--warn);padding-left:11px;margin-top:.9rem}

.disclose{
  margin:1.7rem 0;padding:16px 18px 8px;background:var(--bg2);
  border:1px solid var(--line);border-radius:10px;
}
.disclose h2{font-size:1rem;color:var(--cyan)}
.disclose ul{margin:0 0 .6rem;padding-left:1.15em}
.disclose li{margin-bottom:.35rem}

.dock{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 1.7rem}
.dock a{
  font-size:.85rem;text-decoration:none;color:var(--dim);background:var(--bg2);
  border:1px solid var(--line);border-radius:6px;padding:5px 12px;
}
.dock a:hover{color:var(--cyan);border-color:var(--cyan)}

.mod{
  background:var(--bg2);border:1px solid var(--line);border-radius:10px;
  padding:20px 18px;margin:0 0 1.5rem;
}

.pick{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:1rem 0}
.pick label{font-size:.84rem;color:var(--dim);flex:0 0 auto}
.pick select{flex:1 1 220px;min-width:0}

select,input[type=number]{
  background:#07121d;color:var(--fg);border:1px solid #27465f;border-radius:6px;
  padding:9px 10px;font-size:1rem;font-family:var(--sans);width:100%;min-width:0;
}
input[type=number]{font-family:var(--mono)}
select:focus,input:focus{outline:2px solid var(--cyan);outline-offset:1px}

.layout-wrap{display:grid;grid-template-columns:1fr;gap:16px;margin-top:.6rem}
.layout-svg svg{display:block;width:100%;height:auto;background:#061019;border:1px solid var(--line);border-radius:8px}
.layout-info h3{margin:0 0 .5rem;font-size:.95rem;color:var(--cyan)}
.spk-list{list-style:none;margin:0;padding:0}
.spk-list li{
  display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:baseline;
  padding:7px 0;border-bottom:1px solid var(--line);font-size:.92rem;
}
.spk-list .pos{font-family:var(--mono);color:var(--cyan);font-size:.84rem}
.spk-list .nm{color:var(--fg)}
.spk-list .ds{display:block;color:var(--dim);font-size:.85rem}
.tally{margin:.7rem 0 0;font-size:.9rem;color:var(--dim)}
.tally b{color:var(--warn);font-family:var(--mono)}

.calc{display:grid;grid-template-columns:1fr;gap:12px;margin:1rem 0}
.cell{display:flex;flex-direction:column;gap:5px;min-width:0}
.cell label{font-size:.82rem;color:var(--dim)}
#btn-wire{
  width:100%;background:var(--cyan);color:#05161a;border:0;border-radius:6px;
  padding:11px 18px;font-size:1rem;font-weight:700;cursor:pointer;font-family:var(--sans);
}
#btn-wire:hover{background:#5ae5dd}
.cell-act{justify-content:flex-end}

.scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:8px}
table{border-collapse:collapse;width:100%;min-width:540px;font-size:.9rem}
table caption{text-align:left;padding:10px 12px;color:var(--dim);font-size:.83rem}
th,td{padding:9px 12px;border-top:1px solid var(--line);text-align:left}
thead th{background:#0f2234;color:var(--blue);font-weight:600;border-top:0}
tbody th{color:var(--cyan);font-family:var(--mono);font-weight:700}
td{font-family:var(--mono);color:var(--fg)}
td:last-child{font-family:var(--sans);color:var(--dim)}
tr.good td{color:#8df0c4}
tr.bad td{color:#f09a9a}

.formula{
  margin:1rem 0 0;padding:13px 15px;background:#07121d;border:1px solid var(--line);
  border-radius:8px;font-size:.92rem;
}
.formula p{margin:0 0 .5rem}
.formula .chk{color:var(--cyan);font-size:.86rem;margin:0}

.tl{list-style:none;margin:.5rem 0 0;padding:0}
.tl li{
  padding:9px 0 9px 0;border-bottom:1px solid var(--line);font-size:.93rem;color:var(--dim);
}
.tl b{
  display:inline-block;min-width:3.6em;font-family:var(--mono);color:var(--warn);
  margin-right:9px;
}

.src{margin:.4rem 0 0;padding-left:1.15em;color:var(--dim);font-size:.9rem}
.src li{margin-bottom:.5rem}

.bot{border-top:1px solid var(--line);margin-top:1.4rem;padding:20px 0 36px;color:var(--dim);font-size:.88rem}
.bot p{margin:0 0 .35rem}

/* 404 */
.lost{padding:2.6rem 0 3.8rem}
.lost-num{font-family:var(--mono);font-size:clamp(2.8rem,15vw,5.8rem);color:var(--line);margin:0;line-height:1}
.lost ul{padding-left:1.15em;color:var(--dim)}

@media (min-width:640px){
  .calc{grid-template-columns:1fr 1fr}
  #btn-wire{width:auto;min-width:150px}
  .hero-grid{grid-template-columns:1fr auto}
  .hero-dia{width:190px}
}
@media (min-width:940px){
  .calc{grid-template-columns:1fr 1fr 1fr auto;align-items:end}
  .layout-wrap{grid-template-columns:1.1fr 1fr}
  .mod{padding:26px}
}