:root{--t:#0E7C86;--t2:#14A3AE;--mint:#ecf8f7;--ink:#10232b;--muted:#53626b;--line:#e3ebec;--o:#DF6700;--o2:#F28A2E;--red:#b42318;--cream:#fffaf6}
*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}
body{font-family:"DM Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--t)}img{max-width:100%;display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
header{position:sticky;top:0;z-index:9;background:rgba(255,255,255,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{white-space:nowrap;display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.logo i{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--t),var(--t2));display:grid;place-items:center;color:#fff;font-style:normal;font-weight:800;font-size:16px}
header nav{display:flex;gap:24px;align-items:center;font-size:14.5px;font-weight:500}header nav a{text-decoration:none;color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--t);color:#fff;font-weight:700;font-size:15px;padding:14px 24px;border-radius:999px;border:0;cursor:pointer;text-decoration:none;transition:transform .2s,box-shadow .2s,background .2s;box-shadow:0 10px 24px -12px rgba(14,124,134,.8)}
.btn:hover{background:#0b6670;transform:translateY(-2px)}.btn.o{background:var(--o);box-shadow:0 10px 24px -12px rgba(223,103,0,.8)}.btn.o:hover{background:#c75c00}
header .btn{padding:10px 18px;font-size:14px}

.hero{position:relative;padding:72px 0 64px;background:
 radial-gradient(800px 500px at 0% 0%,rgba(20,163,174,.18),transparent 60%),
 radial-gradient(600px 420px at 100% 100%,rgba(255,179,107,.28),transparent 60%),
 linear-gradient(180deg,#fff,var(--mint))}
.hero .wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 14px;font-size:12.5px;font-weight:600;color:var(--muted);box-shadow:0 6px 18px -10px rgba(0,0,0,.2)}
.pill i{width:8px;height:8px;border-radius:50%;background:var(--t)}
.hero h1{font-size:clamp(40px,5.4vw,66px);font-weight:700;letter-spacing:-.035em;line-height:1.02;margin-top:20px}
.hero h1 em{font-style:normal;color:var(--t)}
.hero p.lead{font-size:18px;color:var(--muted);margin-top:18px;max-width:500px}
.hero .quick{display:flex;gap:18px;margin-top:28px;flex-wrap:wrap}
.hero .quick a{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink);font-weight:600;font-size:14.5px}
.hero .quick a i{width:26px;height:26px;border-radius:50%;background:#fff;border:1px solid var(--line);display:grid;place-items:center;color:var(--t);font-style:normal;font-size:13px}

/* checker card */
.card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:26px;box-shadow:0 40px 80px -40px rgba(14,124,134,.45)}
.card .head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.card .head h2{font-size:20px;font-weight:700;letter-spacing:-.02em}
.count{font-size:12.5px;font-weight:700;color:var(--t);background:var(--mint);padding:5px 11px;border-radius:999px}
.check{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.sym{display:flex;gap:10px;align-items:flex-start;border:1px solid var(--line);border-radius:12px;padding:11px 12px;cursor:pointer;background:#fff;transition:background .15s,border-color .15s;user-select:none}
.sym:hover{border-color:#bfe0e2}
.sym input{position:absolute;opacity:0;width:0;height:0}
.sym .box{flex:0 0 18px;width:18px;height:18px;border-radius:6px;border:1.5px solid #b9c6ca;margin-top:3px;position:relative;transition:all .15s}
.sym .box:after{content:"";position:absolute;left:5px;top:1px;width:5px;height:9px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg) scale(0);transition:transform .15s}
.sym:has(input:checked),.sym.on{border-color:var(--t);background:var(--mint)}
.sym:has(input:checked) .box,.sym.on .box{background:var(--t);border-color:var(--t)}.sym:has(input:checked) .box:after,.sym.on .box:after{transform:rotate(45deg) scale(1)}
.sym b{display:block;font-size:14px;line-height:1.3}.sym small{display:block;font-size:12px;color:var(--muted);line-height:1.35;margin-top:2px}
.result{margin-top:14px;border-radius:14px;background:var(--mint);padding:16px 18px;font-size:14.5px;border-left:4px solid var(--t);transition:background .2s,border-color .2s}
.result b{display:block;font-size:16px;margin-bottom:2px}
.result.warm{background:#fff3e8;border-color:var(--o)}.result.hot{background:#fff1ef;border-color:var(--red)}
.card .note{font-size:12px;color:var(--muted);margin-top:12px}

.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--t);font-weight:700}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--t)}
h2.big{font-size:clamp(28px,3.4vw,42px);font-weight:700;letter-spacing:-.03em;line-height:1.1;margin-top:12px}
section{padding:84px 0}section.soft{background:var(--mint)}
.lead2{color:var(--muted);margin-top:14px;font-size:16.5px;max-width:620px}

.what{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.what .dia{background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 30px 60px -40px rgba(0,0,0,.3)}
.what .dia svg{width:100%;height:auto}
.acid{animation:acid 2.6s ease-in-out infinite}@keyframes acid{0%,100%{opacity:.35;transform:translateY(6px)}50%{opacity:1;transform:translateY(-4px)}}
.what ul{list-style:none;display:grid;gap:12px;margin-top:22px}
.what li{display:flex;gap:12px;font-size:15.5px}.what li i{flex:0 0 24px;width:24px;height:24px;border-radius:50%;background:var(--t);color:#fff;display:grid;place-items:center;font-style:normal;font-size:12px;font-weight:700;margin-top:2px}

.when{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.red{background:#fff;border:1px solid #f3c2c2;border-radius:20px;padding:28px 30px;box-shadow:0 30px 60px -40px rgba(180,35,24,.35)}
.red h3{color:var(--red);font-size:19px;margin-bottom:12px;display:flex;align-items:center;gap:10px}
.red h3 i{width:28px;height:28px;border-radius:50%;background:#fde8e6;display:grid;place-items:center;font-style:normal;font-weight:800;color:var(--red)}
.red ul{list-style:none;display:grid;gap:9px;font-size:15px}.red li{padding-left:22px;position:relative}
.red li:before{content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:50%;background:var(--red)}

.ladder{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
.ladder li{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;position:relative;transition:transform .25s,box-shadow .25s}
.ladder li:hover{transform:translateY(-6px);box-shadow:0 30px 50px -30px rgba(14,124,134,.4)}
.ladder .n{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--t),var(--t2));color:#fff;font-weight:700;display:grid;place-items:center;margin-bottom:16px}
.ladder .k{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--t)}
.ladder h3{font-size:20px;font-weight:700;margin:4px 0 8px;letter-spacing:-.02em}.ladder p{color:var(--muted);font-size:14.5px}

.endo{background:linear-gradient(135deg,#c95c00 0%,var(--o) 45%,var(--o2) 100%);color:#fff;position:relative;overflow:hidden}
.endo:before{content:"";position:absolute;width:640px;height:640px;border-radius:50%;background:rgba(255,255,255,.08);right:-220px;top:-320px}
.endo .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.endo .eyebrow{color:#ffd9b8}.endo .eyebrow:before{background:#ffd9b8}
.endo h2.big{color:#fff}.endo p{opacity:.95;font-size:16px;margin-top:14px}
.endo .band{display:flex;align-items:center;gap:16px;margin-top:22px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.3);border-radius:16px;padding:12px 16px}
.endo .band img{width:92px}.endo .band span{font-size:13.5px}
.endo .band b{display:block;font-size:14.5px}
.form{background:#fff;color:var(--ink);border-radius:22px;padding:30px;display:grid;gap:12px;box-shadow:0 40px 80px -40px rgba(0,0,0,.5)}
.form h3{font-size:22px;font-weight:700;letter-spacing:-.02em}.form p{color:var(--muted);font-size:14.5px}
.form input{width:100%;border:1px solid #d5dde0;border-radius:12px;padding:13px 15px;font:inherit;font-size:15px;transition:border-color .2s,box-shadow .2s}
.form input:focus{outline:0;border-color:var(--o);box-shadow:0 0 0 4px rgba(223,103,0,.15)}.hide{display:none}
.form .btn{width:100%}.form small{color:var(--muted);font-size:12px;text-align:center}

footer{padding:30px 0;color:var(--muted);font-size:13px}footer .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.thanks{min-height:60vh;display:grid;place-items:center;text-align:center;padding:60px 24px}
.rv{opacity:0;transform:translateY(18px);transition:opacity .7s ease var(--d,0ms),transform .7s ease var(--d,0ms)}.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}.acid{animation:none}}
@media (max-width:960px){.hero .wrap,.what,.when,.endo .wrap{grid-template-columns:1fr}.ladder{grid-template-columns:1fr}header nav a.plain{display:none}.hero{padding:52px 0 48px}}
@media (max-width:560px){.logo{font-size:15px}header .btn{padding:9px 14px;font-size:13px}.check{grid-template-columns:1fr}.card{padding:20px}section{padding:64px 0}}