:root{--bg:#000;--card:#0b0712;--line:rgba(182,0,171,.3);--mag:#b600ab;--blu:#1600a3;--tx:#fff;--mut:#a99bbd;--grad:linear-gradient(90deg,var(--mag),var(--blu))}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:#000;color:var(--tx);font:300 16px/1.6 "Nunito Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main{flex:1}
p{margin:0}
.wrap{width:100%;max-width:960px;margin:0 auto;padding:0 20px}

.top{position:fixed;left:0;right:0;top:0;z-index:5;padding-top:env(safe-area-inset-top,0);background:rgba(0,0,0,.88);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:1.25rem;font-weight:500;letter-spacing:.01em}
.brand span{font-weight:700;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.pill{padding:8px 16px;border:1px solid var(--line);border-radius:999px;color:var(--tx);text-decoration:none;font-size:.88rem;transition:border-color .2s}
.pill:hover{border-color:var(--mag)}

.hero{text-align:center;padding:56px 0 32px}
h1{margin:0;font-weight:300;font-size:clamp(2rem,6vw,3.2rem);line-height:1.15}
.hero p{max-width:560px;margin:14px auto 0;color:var(--mut)}

.cards{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.card{display:flex;flex-direction:column;gap:6px;padding:20px;border:1px solid var(--line);border-radius:16px;background:var(--card);text-decoration:none;transition:border-color .2s,transform .2s}
.card:hover{border-color:var(--mag);transform:translateY(-2px)}
.card svg{width:34px;height:34px;margin-bottom:6px;fill:none;stroke:var(--mag);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card b{font-weight:500;font-size:1.05rem}
.card span{color:var(--mut);font-size:.9rem}
.hint,.soon{text-align:center;color:var(--mut);font-size:.9rem;margin-top:22px}
body:has(.tool:target) .hint{display:none}
.soon{margin:36px 0 28px}

.tool{display:none;max-width:720px;margin:26px auto 0;padding:22px;border:1px solid var(--line);border-radius:18px;background:var(--card)}
.tool:target{display:block;animation:in .25s ease}
@keyframes in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
h2{margin:0 0 6px;font-weight:400;font-size:1.5rem}
.how{color:var(--mut);font-size:.92rem;margin-bottom:16px}
.drop{position:relative;display:flex;flex-direction:column;align-items:center;gap:4px;padding:28px 16px;border:1.5px dashed var(--line);border-radius:14px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s}
.drop:hover,.drop:focus-within{border-color:var(--mag);background:rgba(182,0,171,.07)}
.drop input{position:absolute;opacity:0;width:1px;height:1px}
.drop b{font-weight:500;font-size:1.1rem;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.drop span{color:var(--mut);font-size:.85rem}
.msg{margin:12px 0 0;min-height:1.4em;color:var(--mut);font-size:.92rem;overflow-wrap:anywhere}
.msg.err{color:#ff7a95}
.ctl{margin-top:8px}
.ctl>label{display:block;margin-top:14px;font-size:.95rem}
.ctl output{float:right;color:var(--mut);font-variant-numeric:tabular-nums}
input[type=range]{display:block;width:100%;height:32px;margin:4px 0 0;accent-color:var(--mag)}
.chk{display:flex!important;align-items:center;gap:10px;min-height:44px}
.chk input{width:20px;height:20px;accent-color:var(--mag)}
.hint2{margin-top:8px;color:var(--mut);font-size:.82rem}
.wave{display:block;width:100%;height:96px;margin-bottom:6px;border-radius:10px;background:#06030b}

.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;margin-top:18px;padding:0 28px;border:0;border-radius:999px;background:var(--grad);color:#fff;font:500 1rem system-ui,sans-serif;text-decoration:none;cursor:pointer;transition:filter .2s,transform .15s}
.btn:hover{filter:brightness(1.15);transform:translateY(-1px)}
.btn:disabled{opacity:.5;cursor:wait}
.out{margin-top:18px;padding-top:6px;border-top:1px solid var(--line)}
.out audio{display:block;width:100%;margin-top:14px}
:focus-visible{outline:2px solid #e48bff;outline-offset:3px}

.foot{padding:22px 20px calc(22px + env(safe-area-inset-bottom,0));border-top:1px solid var(--line);text-align:center;color:var(--mut);font-size:.82rem}
@media (max-width:480px){.tool{padding:18px 16px}.hero{padding-top:40px}.btn{width:100%}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}

.top .wrap{max-width:1200px}.brand img{width:40px;height:40px;object-fit:contain}.nav{display:flex;gap:22px}
.nav a{color:#fff;text-decoration:none;font-size:.85rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;transition:color .2s}
.nav a:hover,.nav a[aria-current]{color:var(--mag)}
main{padding-top:72px}
.hero{background:linear-gradient(to bottom,#0a0a0a,#120229);margin:0 -20px;padding:56px 20px 40px}
.hero h1{font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:.02em}
.hero{border-radius:0 0 24px 24px}
.cards{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
.tool{scroll-margin-top:84px}
select,input[type=number]{width:100%;min-height:46px;margin-top:6px;padding:0 12px;border:1px solid var(--line);border-radius:10px;background:#06030b;color:#fff;font:inherit}
.res{margin-top:16px;padding:16px;border:1px solid var(--line);border-radius:12px;background:#06030b;white-space:pre-line;font-size:.95rem}
.tn{display:flex;flex-direction:column;align-items:center;margin:18px 0 6px}
.note{font-size:clamp(3rem,14vw,4.5rem);font-weight:800;line-height:1.1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hz{color:var(--mut);min-height:1.4em}
.meter{position:relative;height:14px;margin:10px 6px;border-radius:999px;background:linear-gradient(90deg,#3a0a40,#1a0a2a 45%,#1a0a2a 55%,#3a0a40)}
.meter::before{content:"";position:absolute;left:50%;top:-6px;bottom:-6px;width:2px;background:#fff6}
.needle{position:absolute;top:-5px;left:50%;width:6px;height:24px;margin-left:-3px;border-radius:3px;background:var(--mag);transition:left .12s linear}
.ok .needle{background:#38e07b}
.cents{text-align:center;color:var(--mut);min-height:1.6em}.ok .cents{color:#38e07b}
.dots{display:flex;justify-content:center;gap:12px;margin:16px 0 4px}
.dots i{width:22px;height:22px;border-radius:50%;background:#1d1230;transition:background .05s}
.dots i:first-child{border:2px solid var(--mag)}.dots i.on{background:var(--mag)}
.row{display:flex;gap:12px;flex-wrap:wrap}.row .btn{flex:1 1 140px}
.tap{background:transparent;border:1px solid var(--line)}
@media (max-width:480px){.nav{gap:14px}.brand{font-size:1.05rem}.brand img{width:34px;height:34px}.hero{margin:0 -16px}}