:root{--ink:#111827;--mut:#5b6472;--line:#e5e7eb;--bg:#fff;--soft:#f7f8fa;--ac:#1d4ed8;--acd:#1e40af;--r:12px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--ac)}a:hover{color:var(--acd)}img{max-width:100%;height:auto;display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.2;letter-spacing:-.02em;margin:0 0 .5em}h1{font-size:clamp(2.1rem,5vw,3.4rem);font-weight:700}h2{font-size:clamp(1.6rem,3vw,2.2rem)}h3{font-size:1.15rem}
.kicker{text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:600;color:var(--ac);margin:0 0 .8em}
.lead{font-size:1.15rem;color:var(--mut);max-width:680px}.mut{color:var(--mut)}.small{font-size:.88rem;color:var(--mut)}.hidden{display:none}
/* header */
.top{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{font-weight:700;font-size:1.15rem;color:var(--ink);text-decoration:none;letter-spacing:-.01em}.logo span{color:var(--ac)}
.top nav{display:flex;gap:28px}.top nav a{color:var(--mut);text-decoration:none;font-size:.95rem;font-weight:500}.top nav a:hover,.top nav a[aria-current]{color:var(--ink)}
.nt,.burger{display:none}
/* buttons */
.btn{display:inline-block;background:var(--ac);color:#fff;text-decoration:none;font-weight:600;padding:12px 22px;border-radius:8px;border:1px solid var(--ac);font-size:.98rem;cursor:pointer;font-family:inherit}
.btn:hover{background:var(--acd);color:#fff}.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}.btn.ghost:hover{border-color:var(--ink)}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 0}
/* sections */
.hero{padding:120px 0 96px;border-bottom:1px solid var(--line)}.hero h1{max-width:820px}
.facts{list-style:none;padding:0;margin:44px 0 0;display:flex;gap:28px;flex-wrap:wrap;color:var(--mut);font-size:.95rem}
.facts li:before,.check li:before{content:"✓";color:var(--ac);font-weight:700;margin-right:8px}
.sec{padding:96px 0}.sec.first{padding-top:80px}.alt{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sub{margin-top:56px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px}.card p{margin:0;color:var(--mut)}
.card.link{text-decoration:none;color:var(--ink);transition:border-color .2s}.card.link:hover{border-color:var(--ac)}.card.link h3{color:var(--ac)}
.tags{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:10px}.tags li{border:1px solid var(--line);border-radius:999px;padding:6px 16px;font-size:.93rem;color:var(--mut)}
.steps{list-style:none;padding:0;margin:40px 0 0;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
.steps li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px}
.steps li:before{content:counter(s,decimal-leading-zero);display:block;color:var(--ac);font-weight:700;font-size:.9rem;margin-bottom:14px}
.steps b{display:block;margin-bottom:6px}.steps span{color:var(--mut);font-size:.95rem}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
details{border-top:1px solid var(--line);padding:14px 0}details:last-child{padding-bottom:0}summary{cursor:pointer;font-weight:600}details p{margin:.6em 0 0}
.card h3+details{margin-top:12px}
.mail{font-size:1.3rem;font-weight:600;text-decoration:none}
/* forms */
.form label{display:block;font-weight:600;font-size:.9rem;margin:14px 0 6px}.form h3{margin-bottom:4px}
input,select,textarea{width:100%;font:inherit;font-size:1rem;padding:11px 13px;border:1px solid #d1d5db;border-radius:8px;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--ac);outline-offset:1px;border-color:transparent}
fieldset{border:0;padding:0;margin:14px 0 0}legend{font-weight:600;font-size:.9rem}.form label.inl{display:inline-flex;align-items:center;gap:6px;font-weight:400;margin-right:18px}.inl input{width:auto}
.form .btn{margin-top:20px;width:100%}.form .small{margin-top:12px}
/* tools */
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin:48px 0 24px}
.pc{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;background:#fff}
.pc img{aspect-ratio:3/2;object-fit:cover;width:100%;border-bottom:1px solid var(--line)}
.pbody{padding:22px;display:flex;flex-direction:column;flex:1}.pbody p{color:var(--mut);font-size:.95rem;flex:1}
.st{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ac);font-weight:600;margin-bottom:8px}.st.work{color:var(--mut)}
.pfoot{display:flex;justify-content:space-between;align-items:center;margin-top:12px}.price{font-weight:700;font-size:1.15rem}.pfoot .btn{padding:9px 18px}
/* feed / posts */
.feed{list-style:none;padding:0;margin:24px 0 0}.feed li{display:grid;grid-template-columns:130px 1fr;gap:20px;padding:20px 0;border-top:1px solid var(--line)}
.feed time{color:var(--mut);font-size:.9rem}.feed h3 a{color:var(--ink);text-decoration:none}.feed h3 a:hover{color:var(--ac)}.feed p{margin:0;color:var(--mut)}
main#book{padding:72px 0 96px}main#book .wrap,.post{max-width:780px}
.post table{border-collapse:collapse;width:100%}.post td,.post th{border:1px solid var(--line);padding:8px}
/* footer */
footer{border-top:1px solid var(--line);padding:48px 0 24px;font-size:.93rem}
footer .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}footer a{color:var(--ink);text-decoration:none}footer a:hover{color:var(--ac)}
.flinks{display:flex;gap:22px;flex-wrap:wrap}.copy{margin-top:32px;color:var(--mut);font-size:.85rem}
@media(max-width:900px){.grid3,.pgrid{grid-template-columns:1fr 1fr}.steps{grid-template-columns:1fr 1fr}.split{grid-template-columns:1fr;gap:36px}
.burger{display:block;width:40px;height:40px;cursor:pointer;position:relative}.burger span,.burger span:before,.burger span:after{position:absolute;left:9px;width:22px;height:2px;background:var(--ink);content:""}.burger span{top:19px}.burger span:before{top:-7px;left:0}.burger span:after{top:7px;left:0}
.top nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:8px 24px 16px}.top nav a{padding:12px 0;font-size:1.05rem}
.nt:checked~nav{display:flex}}
@media(max-width:600px){body{font-size:16px}.hero{padding:64px 0 56px}.sec{padding:64px 0}.grid3,.grid2,.pgrid,.steps{grid-template-columns:1fr}.feed li{grid-template-columns:1fr;gap:4px}.wrap{padding:0 20px}.facts{gap:12px;flex-direction:column}}