:root{--bg:#080711;--panel:rgba(255,255,255,.08);--line:rgba(255,255,255,.16);--ink:#fff8ea;--muted:rgba(255,248,234,.68);--gold:#ffd77a;--red:#ff6338;--violet:#c647ff;--cyan:#53d8ca}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 82% 12%,rgba(198,71,255,.26),transparent 32%),radial-gradient(circle at 14% 76%,rgba(83,216,202,.2),transparent 35%),linear-gradient(135deg,#080711,#151024 56%,#281545);color:var(--ink);font-family:"Noto Sans JP",system-ui,sans-serif}.stone-page{min-height:100vh}.hero{padding:22px clamp(18px,5vw,72px) 72px}.topnav{display:flex;align-items:center;justify-content:space-between;gap:18px;max-width:1160px;margin:0 auto 76px}.brand{color:var(--ink);font-weight:900;letter-spacing:.14em;text-decoration:none}.nav-actions{display:flex;gap:16px}.nav-actions a{color:var(--muted);font-size:.86rem;text-decoration:none}.hero-grid{max-width:1160px;margin:0 auto;display:grid;grid-template-columns:1.05fr .75fr;gap:28px;align-items:end}.label{margin:0 0 14px;color:var(--gold);font-size:.7rem;font-weight:900;letter-spacing:.22em}.hero h1{margin:0;font-size:clamp(2.5rem,7vw,6.2rem);line-height:1.03;letter-spacing:0}.lead{max-width:680px;color:var(--muted);font-size:1rem;line-height:2}.account-card,.balance-panel,.pack-card,.safety{border:1px solid var(--line);background:var(--panel);backdrop-filter:blur(18px);box-shadow:0 30px 110px rgba(0,0,0,.28)}.account-card{width:min(560px,100%);margin-top:28px;padding:18px;border-radius:20px;display:flex;align-items:center;gap:14px}.status-dot{width:12px;height:12px;border-radius:50%;background:#8f94a8;box-shadow:0 0 20px currentColor}.account-card[data-auth=user] .status-dot{background:#73d487}.account-card[data-auth=guest] .status-dot{background:#ffb75d}.account-card small,.account-card span{display:block;color:var(--muted);font-size:.82rem}.account-card strong{display:block;font-size:1.15rem;margin:4px 0}.hero-actions{margin-top:18px;display:flex;gap:12px;flex-wrap:wrap}.primary,.ghost,.pack-card button{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:13px 22px;border-radius:999px;font-weight:900;text-decoration:none;border:0;cursor:pointer}.primary,.pack-card button{background:linear-gradient(135deg,var(--red),var(--violet));color:white;box-shadow:0 20px 70px rgba(198,71,255,.22)}.ghost{color:var(--ink);border:1px solid var(--line);background:rgba(255,255,255,.06)}.balance-panel{border-radius:28px;padding:28px}.balance-panel span{color:var(--gold);font-size:.74rem;letter-spacing:.18em;font-weight:900}.balance-panel strong{display:block;margin:16px 0;font-size:clamp(2.2rem,5vw,4.4rem);line-height:1}.balance-panel p{color:var(--muted);line-height:1.8}.packs{max-width:1160px;margin:0 auto;padding:0 clamp(18px,5vw,72px) 72px}.section-head{max-width:720px;margin-bottom:24px}.section-head h2{margin:0;font-size:clamp(1.8rem,4vw,3.4rem)}.section-head p{color:var(--muted);line-height:1.9}.pack-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.pack-card{min-height:220px;border-radius:24px;padding:22px;display:flex;flex-direction:column;justify-content:space-between}.pack-card .stones{font-size:2rem;font-weight:900}.pack-card .price{color:var(--gold);font-weight:900}.pack-card small{color:var(--muted);line-height:1.7}.pack-card button:disabled{opacity:.48;cursor:not-allowed;box-shadow:none}.safety{max-width:1160px;margin:0 auto 72px;border-radius:26px;padding:28px;display:grid;grid-template-columns:.55fr 1fr;gap:20px}.safety span{color:var(--gold);font-size:.7rem;letter-spacing:.22em;font-weight:900}.safety h2{margin:10px 0 0;font-size:1.5rem}.safety p{margin:0;color:var(--muted);line-height:1.9}@media(max-width:860px){.hero{padding-top:18px}.topnav{margin-bottom:48px}.nav-actions{display:none}.hero-grid,.pack-grid,.safety{grid-template-columns:1fr}.balance-panel{padding:22px}.pack-card{min-height:190px}.safety{margin-left:18px;margin-right:18px}.hero-actions{display:grid}.primary,.ghost{width:100%}}