:root{--navy:#143756;--navy2:#0d2a43;--green:#4f8064;--green2:#3d6d54;--cream:#f5f0e6;--paper:#fffdfa;--ink:#263746;--muted:#6e7a82;--line:#dfe3df;--orange:#d99043;--shadow:0 18px 55px rgba(23,45,61,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--cream);color:var(--ink);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;line-height:1.55}
a{color:var(--navy)}.shell{width:min(1120px,92vw);margin:auto}.topbar{background:rgba(255,253,250,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(10px)}
.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{text-decoration:none}.brand b{display:block;color:var(--navy);font-size:25px;letter-spacing:.11em;line-height:1}.brand span{display:block;color:var(--green);font-size:11px;letter-spacing:.2em;margin-top:6px}
.navlinks{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.navlinks a{text-decoration:none;font-weight:750;padding:9px 12px;border-radius:10px}.navlinks a:hover{background:#eef2ed}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;text-decoration:none;border:0;border-radius:11px;padding:12px 17px;font-weight:850;cursor:pointer;background:var(--navy);color:#fff}.btn.green{background:var(--green)}.btn.ghost{background:#edf2ef;color:var(--navy)}.btn.small{padding:9px 13px;font-size:14px}
.hero{padding:70px 0 42px}.eyebrow{display:inline-block;color:var(--green2);font-weight:900;letter-spacing:.12em;text-transform:uppercase;font-size:12px;margin-bottom:12px}.hero h1,.page-title{color:var(--navy);font-size:clamp(38px,6vw,68px);line-height:1.02;letter-spacing:-.045em;margin:0 0 20px}.lead{font-size:19px;color:#50616c;max-width:720px}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:50px;align-items:center}
.card{background:var(--paper);border:1px solid rgba(216,222,217,.9);border-radius:22px;box-shadow:var(--shadow);padding:26px}.soft{box-shadow:none;background:rgba(255,253,250,.72)}
.sudoku-preview{width:min(390px,100%);aspect-ratio:1;margin:auto;display:grid;grid-template-columns:repeat(9,1fr);background:var(--navy);gap:1px;border:4px solid var(--navy);border-radius:12px;overflow:hidden;box-shadow:0 25px 60px rgba(20,55,86,.18)}
.sudoku-preview span{background:#fff;display:grid;place-items:center;font-size:clamp(13px,2vw,21px);font-weight:750;color:var(--navy)}.sudoku-preview span:nth-child(3n){border-right:2px solid var(--navy)}
.section{padding:48px 0}.section h2{font-size:34px;color:var(--navy);letter-spacing:-.025em}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature h3{color:var(--navy);margin-bottom:7px}.icon{width:42px;height:42px;border-radius:12px;background:#e7f0e9;color:var(--green2);display:grid;place-items:center;font-weight:900;font-size:20px}
.notice{padding:16px 18px;border-radius:14px;background:#edf4ef;border:1px solid #d8e7dc}.notice.club{background:#fff6e8;border-color:#f1ddbb}.price{font-size:36px;font-weight:950;color:var(--navy);letter-spacing:-.04em}.muted{color:var(--muted)}.footer{border-top:1px solid var(--line);padding:28px 0 40px;margin-top:45px;color:var(--muted);font-size:14px}.footer .shell{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.form-card{max-width:580px;margin:55px auto}.form-card h1{color:var(--navy);font-size:38px}.field{margin:15px 0}.field label{display:block;font-weight:800;margin-bottom:6px}.field input{width:100%;border:1px solid #cfd7d2;border-radius:11px;padding:13px 14px;font-size:16px;background:#fff}.field input:focus{outline:3px solid rgba(79,128,100,.16);border-color:var(--green)}
.account-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.stat{background:#f6f8f5;border-radius:15px;padding:20px}.stat strong{display:block;font-size:30px;color:var(--navy)}.plan-badge{display:inline-block;border-radius:999px;background:#e5efe8;color:var(--green2);padding:7px 11px;font-weight:900;font-size:12px;letter-spacing:.08em}
@media(max-width:820px){.hero-grid,.grid3,.account-grid{grid-template-columns:1fr}.nav{height:auto;padding:17px 0;align-items:flex-start}.navlinks{justify-content:flex-end}.hero{padding-top:45px}}