:root{
  --bg:#ffffff;
  --soft:#f4f5f7;
  --ink:#0a0a0d;
  --muted:#5b5f69;
  --line:#e4e6ea;
  --accent:#1f5bff;
  --accent-ink:#ffffff;
  --dark:#0a0a0d;
  --radius:14px;
  --wrap:1160px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.12;letter-spacing:-.02em;font-weight:700}
h1{font-size:clamp(2.2rem,5vw,3.8rem)}
h2{font-size:clamp(1.6rem,3vw,2.3rem);margin-bottom:14px}
h3{font-size:1.15rem;margin-bottom:8px}
p{color:var(--muted)}
section{padding:72px 0}
.lead{font-size:1.15rem;max-width:660px;margin-top:18px}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.sec-head{max-width:700px;margin-bottom:36px}

/* header */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo img{height:30px;width:auto;display:block}
.nav{display:flex;align-items:center;gap:6px}
.nav a{padding:8px 14px;border-radius:999px;font-size:.95rem;font-weight:500;color:var(--muted);transition:.2s}
.nav a:hover{color:var(--ink);background:var(--soft)}
.nav a.active{color:var(--ink);background:var(--soft)}
.burger{display:none;background:none;border:0;width:40px;height:40px;cursor:pointer}
.burger span{display:block;height:2px;background:var(--ink);margin:6px 8px;transition:.2s}

/* buttons */
.btn{display:inline-block;padding:14px 26px;border-radius:999px;font-weight:600;font-size:1rem;border:1.5px solid var(--ink);transition:.2s;cursor:pointer;font-family:inherit;background:transparent;color:var(--ink)}
.btn-fill{background:var(--ink);color:#fff}
.btn-fill:hover{background:var(--accent);border-color:var(--accent)}
.btn-line:hover{background:var(--ink);color:#fff}
.btn-blue{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-blue:hover{filter:brightness(1.1)}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

/* cards & grids */
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--soft);border-radius:var(--radius);padding:28px}
.card.line{background:#fff;border:1px solid var(--line)}
.card .num{font-size:.85rem;font-weight:700;color:var(--accent);display:block;margin-bottom:10px}
.dark{background:var(--dark);color:#fff}
.dark p{color:#a9acb5}
.dark .eyebrow{color:#7fa0ff}

/* faq */
.faq details{border-bottom:1px solid var(--line);padding:20px 0}
.faq summary{cursor:pointer;font-weight:600;font-size:1.08rem;list-style:none;display:flex;justify-content:space-between;gap:20px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;line-height:1;color:var(--accent)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin-top:12px;max-width:760px}

/* table */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.98rem}
th,td{text-align:left;padding:16px 18px;border-bottom:1px solid var(--line)}
th{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
td:first-child{font-weight:600}

/* tags */
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{padding:9px 18px;border-radius:999px;border:1px solid var(--line);font-size:.93rem;font-weight:500;background:#fff}
.tag.on{background:var(--ink);color:#fff;border-color:var(--ink)}

/* footer */
.footer{background:var(--dark);color:#fff;padding:60px 0 30px}
.footer .cols{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:30px}
.footer img{height:30px;filter:invert(1);margin-bottom:16px}
.footer h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;color:#8b8f99;margin-bottom:14px}
.footer li{margin-bottom:9px}
.footer a{color:#d6d8de;font-size:.95rem}
.footer a:hover{color:#fff}
.footer p{color:#8b8f99;font-size:.95rem;max-width:300px}
.copy{border-top:1px solid #23252b;margin-top:40px;padding-top:22px;font-size:.85rem;color:#6e727c}

/* ---------- page: web player ---------- */
.hero-player{padding:80px 0 40px}
.hero-player .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}
.mock{background:var(--dark);border-radius:20px;padding:22px;color:#fff;box-shadow:0 30px 60px -25px rgba(10,10,13,.5)}
.mock-top{display:flex;gap:7px;margin-bottom:18px}
.mock-top i{width:11px;height:11px;border-radius:50%;background:#2c2f37;display:block}
.mock-row{display:flex;justify-content:space-between;align-items:center;padding:13px 14px;border-radius:10px;font-size:.95rem}
.mock-row:nth-child(even){background:#14151a}
.mock-row small{color:#8b8f99}
.mock-row.now{background:var(--accent)}
.mock-row.now small{color:#d6e0ff}
.mock-bar{margin-top:18px;height:5px;border-radius:5px;background:#2c2f37;position:relative}
.mock-bar::after{content:"";position:absolute;left:0;top:0;height:100%;width:38%;background:var(--accent);border-radius:5px}
.mock-meta{display:flex;justify-content:space-between;font-size:.8rem;color:#8b8f99;margin-top:10px}
.steps{counter-reset:s;display:grid;gap:0}
.steps li{counter-increment:s;display:grid;grid-template-columns:70px 1fr;gap:10px;padding:26px 0;border-top:1px solid var(--line)}
.steps li::before{content:"0" counter(s);font-size:2rem;font-weight:700;color:var(--accent)}
.split{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;align-items:start}
.checks li{padding:12px 0 12px 32px;position:relative;border-bottom:1px solid var(--line);color:var(--muted)}
.checks li::before{content:"";position:absolute;left:0;top:19px;width:14px;height:8px;border-left:2.5px solid var(--accent);border-bottom:2.5px solid var(--accent);transform:rotate(-45deg)}
.cta-band{background:var(--accent);color:#fff;border-radius:24px;padding:56px;text-align:center}
.cta-band p{color:#dbe5ff;margin:14px auto 0;max-width:560px}
.cta-band .btn{margin-top:26px;background:#fff;color:var(--ink);border-color:#fff}

/* ---------- page: login ---------- */
.login-hero{padding:70px 0}
.login-hero .wrap{display:grid;grid-template-columns:1fr 440px;gap:60px;align-items:center}
.form-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px;box-shadow:0 24px 50px -30px rgba(10,10,13,.35)}
.form-card h2{font-size:1.5rem}
.field{margin-top:18px}
.field label{display:block;font-size:.85rem;font-weight:600;margin-bottom:6px}
.field input{width:100%;padding:14px 16px;border:1.5px solid var(--line);border-radius:10px;font-size:1rem;font-family:inherit;background:var(--soft)}
.field input:focus{outline:none;border-color:var(--accent);background:#fff}
.form-card .btn{width:100%;margin-top:22px;text-align:center}
.form-note{display:flex;justify-content:space-between;font-size:.88rem;margin-top:16px;color:var(--muted)}
.form-note a{color:var(--accent);font-weight:600}
.problem{display:grid;grid-template-columns:260px 1fr;gap:30px;padding:28px 0;border-top:1px solid var(--line)}
.problem:last-child{border-bottom:1px solid var(--line)}
.problem h3{margin:0}
.device-row{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.device{border:1px solid var(--line);border-radius:12px;padding:20px 14px;text-align:center;font-weight:600;font-size:.95rem}
.device small{display:block;font-weight:400;color:var(--muted);margin-top:4px}

/* ---------- page: store ---------- */
.store-hero{background:var(--soft);padding:80px 0 60px}
.store-hero .wrap{text-align:center}
.store-hero .lead{margin-left:auto;margin-right:auto}
.store-hero .tags{justify-content:center;margin-top:30px}
.shelf{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.disc{border-radius:var(--radius);padding:22px;aspect-ratio:1/1.1;display:flex;flex-direction:column;justify-content:flex-end;color:#fff}
.disc h3{margin-bottom:4px}
.disc span{font-size:.85rem;opacity:.8}
.d1{background:linear-gradient(160deg,#1f5bff,#0a1a5c)}
.d2{background:linear-gradient(160deg,#16181d,#3a3f4b)}
.d3{background:linear-gradient(160deg,#7a3cff,#2a1269)}
.d4{background:linear-gradient(160deg,#0e8a6a,#063b2e)}
.timeline{position:relative;padding-left:34px;border-left:2px solid var(--line);margin-left:8px}
.timeline li{position:relative;padding-bottom:34px}
.timeline li::before{content:"";position:absolute;left:-43px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--accent);border:4px solid #fff;box-shadow:0 0 0 2px var(--accent)}
.timeline li:last-child{padding-bottom:0}
.fmt{border:1px solid var(--line);border-radius:var(--radius);padding:26px;background:#fff}
.fmt b{display:block;font-size:1.7rem;letter-spacing:-.02em;margin-bottom:6px}
.banner-row{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}

/* ---------- page: music ---------- */
.music-hero{padding:90px 0 50px}
.music-hero h1{max-width:900px}
.genre-index{display:grid;grid-template-columns:repeat(2,1fr);column-gap:50px}
.genre-index li{display:flex;justify-content:space-between;align-items:baseline;padding:20px 0;border-bottom:1px solid var(--line);gap:20px}
.genre-index b{font-size:1.35rem;letter-spacing:-.01em}
.genre-index span{color:var(--muted);font-size:.93rem;text-align:right}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:26px}
.tab{padding:10px 20px;border-radius:999px;border:1px solid #2c2f37;background:transparent;color:#d6d8de;font-family:inherit;font-size:.95rem;cursor:pointer}
.tab.on{background:#fff;color:var(--ink);border-color:#fff}
.panel{display:none;max-width:720px}
.panel.on{display:block}
.panel h3{font-size:1.5rem;color:#fff}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;text-align:center}
.stat b{display:block;font-size:2.6rem;letter-spacing:-.03em;color:var(--accent)}
.rubric{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.rubric div{padding:30px;border-right:1px solid var(--line)}
.rubric div:last-child{border-right:0}

/* responsive */
@media(max-width:900px){
  section{padding:52px 0}
  .g3,.g4,.shelf{grid-template-columns:repeat(2,1fr)}
  .hero-player .wrap,.login-hero .wrap,.split{grid-template-columns:1fr;gap:34px}
  .device-row{grid-template-columns:repeat(2,1fr)}
  .problem{grid-template-columns:1fr;gap:8px}
  .footer .cols{grid-template-columns:1fr 1fr}
  .genre-index,.rubric,.stat-row{grid-template-columns:1fr}
  .rubric div{border-right:0;border-bottom:1px solid var(--line)}
  .cta-band{padding:36px 22px}
}
@media(max-width:720px){
  .burger{display:block}
  .nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:14px 24px 20px;border-bottom:1px solid var(--line)}
  .nav.open{display:flex}
  .nav a{padding:13px 14px}
}
@media(max-width:560px){
  .g2,.g3,.g4,.shelf{grid-template-columns:1fr}
  body{font-size:16px}
  .footer .cols{grid-template-columns:1fr}
}