:root{--blue:#2563eb;--blue2:#06b6d4;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--bg:#fff;--alt:#f8fafc;--ok:#16a34a}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
a{color:var(--blue);text-decoration:none}
.wrap{max-width:1100px;margin:0 auto;padding:0 16px}.narrow{max-width:760px}.center{text-align:center}
.muted{color:var(--muted)}
.brand{font-weight:800;font-size:24px;color:var(--ink);letter-spacing:-.5px}.brand span{color:var(--blue)}
.nav{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
.nav nav{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.nav nav a{color:var(--ink);font-size:15px}.nav nav a.on,.nav nav a:hover{color:var(--blue)}
.btn{display:inline-block;background:linear-gradient(90deg,var(--blue2),var(--blue));color:#fff!important;border:0;border-radius:8px;padding:12px 22px;font-weight:600;cursor:pointer;font-size:16px}
.btn:hover{filter:brightness(1.07)}.btn-sm{padding:8px 14px;font-size:14px}.btn-lg{padding:16px 34px;font-size:18px}
.btn-light{background:#fff;color:var(--blue)!important}
.btn-outline{background:#fff;color:var(--blue)!important;border:1px solid var(--blue)}
.hero{background:linear-gradient(135deg,#eff6ff,#ecfeff);padding:72px 0}
.hero-in{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.eyebrow{text-transform:uppercase;letter-spacing:2px;font-weight:700;color:var(--blue);margin:0}
.hero h1{font-size:72px;margin:4px 0;line-height:1}.hero h1 small{font-size:24px;color:var(--muted);font-weight:500}
.lead{font-size:20px;color:#334155}
.checks{list-style:none;padding:0;margin:18px 0 28px}.checks li{padding:4px 0 4px 28px;position:relative}
.checks li:before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:800}
.hero-card{background:#fff;border-radius:14px;box-shadow:0 20px 50px rgba(15,23,42,.12);padding:22px}
.mail-row{border-bottom:1px solid var(--line);padding:10px 0;font-size:15px}
.mail-att{margin:16px 0;background:var(--alt);border:1px dashed #cbd5e1;border-radius:8px;padding:12px}
.mail-ok{color:var(--ok);font-weight:600}
.sec{padding:72px 0}.sec.alt{background:var(--alt)}
h2{font-size:32px;margin:0 0 36px;letter-spacing:-.5px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{border:1px solid var(--line);border-radius:12px;padding:26px;background:#fff}
.card h3{margin:8px 0}.card p{color:#475569;margin:0}.ic{font-size:30px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step span{display:inline-flex;width:40px;height:40px;border-radius:50%;background:var(--blue);color:#fff;align-items:center;justify-content:center;font-weight:700}
.step p{color:#475569}code{background:#e0f2fe;padding:2px 6px;border-radius:4px;font-size:14px}
details{border:1px solid var(--line);border-radius:10px;padding:14px 18px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600}details p{color:#475569;margin:10px 0 0}
.cta{background:linear-gradient(90deg,var(--blue2),var(--blue));color:#fff;padding:64px 0}.cta h2{margin-bottom:8px}.cta p{margin-bottom:24px}
.foot{border-top:1px solid var(--line);padding:40px 0 20px;background:#fff}
.foot-in{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}.foot-in div a{display:block;color:#475569;margin:4px 0}
.copy{color:var(--muted);font-size:13px;margin-top:24px}
/* signup */
.su{padding:48px 0 72px}.su h1{font-weight:300;font-size:44px;letter-spacing:1px;margin:0 0 16px;text-transform:uppercase}
.tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:28px}
.tabs div{font-size:20px;color:#94a3b8;font-weight:300}.tabs div b{font-size:28px;font-weight:300;margin-right:8px}.tabs div.on{color:var(--ink)}
.choice{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:24px}
.opt{border:1px solid var(--line);border-radius:6px;padding:26px;text-align:center;cursor:pointer;display:block}
.opt:has(input:checked){border-color:var(--blue);box-shadow:0 0 0 1px var(--blue)}
.opt input{width:22px;height:22px;accent-color:var(--blue)}.opt h3{font-weight:400;margin:0 0 8px}
.field{margin-bottom:18px}.field label{display:block;font-weight:600;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:12px;border:1px solid #cbd5e1;border-radius:6px;font-size:16px;font-family:inherit}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.summary{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:24px}
.summary h4{margin:0 0 4px}.agree{display:flex;gap:10px;align-items:flex-start;margin:18px 0}
.agree input{width:20px;height:20px;margin-top:3px}
.alert{padding:14px 16px;border-radius:8px;margin-bottom:18px}.alert.err{background:#fef2f2;color:#991b1b}.alert.ok{background:#f0fdf4;color:#166534}.alert.info{background:#eff6ff;color:#1e40af}
.btn-row{display:flex;gap:16px}.btn-row .btn{flex:1;text-align:center}.btn-row .btn-outline{flex:0 0 220px}
table.t{width:100%;border-collapse:collapse;font-size:14px}table.t th,table.t td{border-bottom:1px solid var(--line);padding:8px;text-align:left;vertical-align:top}
.legal h2{font-size:22px;margin:28px 0 8px}.legal p,.legal li{color:#334155}
@media(max-width:800px){.hero-in,.grid3,.steps,.foot-in,.choice,.row2,.summary,.tabs{grid-template-columns:1fr}.hero h1{font-size:56px}.nav nav a:not(.btn){display:none}.btn-row{flex-direction:column-reverse}.btn-row .btn-outline{flex:auto}.su h1{font-size:30px}}
/* v2: plans + signup */
.small{font-size:14px}.save{color:var(--ok);font-weight:600}.h-sm{font-size:24px;margin:0 0 16px}
.tabs4{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:28px}
.tabs4 button{background:none;border:0;border-bottom:3px solid var(--line);padding:8px 0;text-align:left;font:inherit;font-size:17px;color:#94a3b8;cursor:pointer}
.tabs4 button b{font-size:24px;font-weight:300;margin-right:8px}.tabs4 button.on{color:var(--ink);border-color:var(--blue)}
.tabs4 button.done{color:var(--ink);border-color:#93c5fd}.tabs4 button:disabled{cursor:default}
.su-grid{display:grid;grid-template-columns:1fr 300px;gap:32px;align-items:start}
.su-side{border:1px solid var(--line);border-radius:12px;padding:20px;background:var(--alt);position:sticky;top:84px}
.su-side h3{margin:0 0 12px}.sum-row{display:flex;justify-content:space-between;gap:10px;padding:6px 0}
.sum-block{border-top:1px solid var(--line);margin-top:10px;padding-top:10px}
.sum-row.total{border-top:2px solid var(--ink);margin-top:8px;padding-top:10px;font-size:18px}
.bill-toggle{display:flex;gap:10px;justify-content:center;margin-bottom:20px;flex-wrap:wrap}
.bill-toggle label{border:1px solid var(--line);border-radius:30px;padding:8px 18px;cursor:pointer;background:#fff}
.bill-toggle label:has(input:checked){border-color:var(--blue);box-shadow:0 0 0 1px var(--blue)}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:16px}
.plan-card{position:relative;border:1px solid var(--line);border-radius:12px;padding:22px 18px;cursor:pointer;display:block;background:#fff}
.plan-card:has(input:checked){border-color:var(--blue);box-shadow:0 0 0 2px var(--blue)}
.plan-card input{position:absolute;top:16px;right:16px;width:20px;height:20px;accent-color:var(--blue)}
.plan-card h3{margin:0 0 4px;font-size:19px;padding-right:24px}.plan-card p{margin:0 0 10px;font-size:14px}
.plan-card .price{font-size:34px;font-weight:800;line-height:1.1}.plan-card .price small{font-size:15px;color:var(--muted);font-weight:500}
.plan-card .price.y{display:none}.plans.yearly .price.m{display:none}.plans.yearly .price.y{display:block}
.plan-card .price .save{font-size:13px}.plan-card .checks{margin:12px 0 0;font-size:14px}
.plan-card.pop{border-color:#93c5fd}.ribbon{position:absolute;top:-11px;left:18px;background:var(--blue);color:#fff;font-size:12px;font-weight:700;padding:2px 10px;border-radius:20px}
.nums{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}
.num{border:1px solid var(--line);border-radius:8px;padding:10px;cursor:pointer;display:flex;gap:8px;align-items:center;background:#fff}
.num:has(input:checked){border-color:var(--blue);box-shadow:0 0 0 1px var(--blue)}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px}.span2{grid-column:span 2}
.review{display:grid;grid-template-columns:1fr 1fr;gap:16px 24px;margin-bottom:16px;border:1px solid var(--line);border-radius:12px;padding:20px}
.review h4{margin:0 0 4px}
.home-plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.home-plans .plan-card{cursor:default}.home-plans .btn{margin-top:16px;width:100%;text-align:center}
@media(max-width:800px){.tabs4{grid-template-columns:repeat(2,1fr)}.su-grid,.plans,.row3,.review,.home-plans{grid-template-columns:1fr}.span2{grid-column:auto}.su-side{position:static}}