:root{
  --ink:#0f172a; --muted:#475569; --line:#e2e8f0; --soft:#f8fafc;
  --blue:#1d4ed8; --blue-dk:#1e3a8a; --green:#15803d; --green-lt:#16a34a;
  --amber:#b45309; --red:#b91c1c; --white:#fff;
  --radius:14px; --shadow:0 1px 3px rgba(15,23,42,.08),0 8px 24px rgba(15,23,42,.05);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:system-ui,-apple-system,'Segoe UI',Arial,sans-serif;color:var(--ink);background:var(--soft);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--blue)}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.narrow{max-width:760px;margin:0 auto;padding:0 20px}

/* header */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:66px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:1.05rem;letter-spacing:-.01em}
.brand .dot{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,#1d4ed8,#0ea5e9);display:inline-block}
.brand span{color:var(--blue)}
.nav{display:flex;align-items:center;gap:22px}
.nav a{color:var(--muted);text-decoration:none;font-size:.92rem;font-weight:600}
.nav a:hover{color:var(--ink)}
.nav .btn-mini{background:var(--blue);color:#fff;padding:9px 16px;border-radius:9px}
.nav .btn-mini:hover{background:var(--blue-dk);color:#fff}
@media(max-width:820px){.nav a:not(.btn-mini){display:none}}

/* hero */
.hero{background:linear-gradient(160deg,#0f172a 0%,#1e3a8a 60%,#1d4ed8 100%);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;inset:auto -20% -60% auto;width:70%;height:120%;background:radial-gradient(circle,rgba(56,189,248,.18),transparent 60%);pointer-events:none}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);padding:6px 13px;border-radius:99px;font-size:.76rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;margin-bottom:18px}
.hero h1{font-size:clamp(1.85rem,4.6vw,3rem);line-height:1.14;letter-spacing:-.02em;max-width:820px}
.hero p.sub{margin-top:16px;font-size:clamp(1rem,2vw,1.15rem);color:#cbd5e1;max-width:660px}
.hero .meta{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px}
.chip{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#e2e8f0;font-size:.82rem;padding:7px 13px;border-radius:99px}

/* sections */
section{padding:56px 0}
section.tight{padding:36px 0}
h2{font-size:clamp(1.35rem,3vw,1.75rem);letter-spacing:-.01em;margin-bottom:10px}
h3{font-size:1.06rem;margin-bottom:6px}
.lead{color:var(--muted);font-size:1.02rem;max-width:700px}
.eyebrow-sm{font-size:.78rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--blue);margin-bottom:8px}

/* cards */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:1fr 1fr}
.g3{grid-template-columns:repeat(3,1fr)}
@media(max-width:860px){.g2,.g3{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.card.soft{background:var(--soft)}
.card h3{font-size:1rem}

/* calculator */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
@media(max-width:900px){.calc{grid-template-columns:1fr}}
.field{margin-bottom:13px}
label{display:block;font-size:.82rem;font-weight:700;margin-bottom:5px}
input[type=number],input[type=text],input[type=email],select,textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font-size:.95rem;font-family:inherit;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid #bfdbfe;border-color:#93c5fd}
.hint{font-size:.74rem;color:#64748b;margin-top:3px}
.btn{display:inline-block;width:100%;padding:14px;border:0;border-radius:11px;background:var(--blue);color:#fff;font-weight:800;font-size:1rem;cursor:pointer;text-align:center;text-decoration:none}
.btn:hover{background:var(--blue-dk)}
.btn.green{background:var(--green-lt)}
.btn.green:hover{background:#15803d}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn.small{padding:10px 16px;width:auto;font-size:.9rem}

/* result panel */
.result{background:#0f172a;color:#e2e8f0;border-radius:var(--radius);padding:22px;position:sticky;top:86px}
.result h3{color:#93c5fd;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;margin-bottom:10px}
.big{font-size:clamp(1.9rem,4vw,2.4rem);font-weight:800;color:#fff;line-height:1.1}
.big-sub{font-size:.85rem;color:#94a3b8;margin-top:6px}
.rows{margin-top:16px}
.row{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid #1e293b;font-size:.9rem}
.row:last-child{border-bottom:0}
.row b{color:#fff;white-space:nowrap}
.verdict{margin-top:14px;padding:13px 15px;border-radius:11px;font-size:.88rem;background:#14532d;color:#dcfce7;line-height:1.5}
.verdict.warn{background:#422006;color:#fef3c7}
.verdict.neutral{background:#1e293b;color:#cbd5e1}

/* tables */
table{width:100%;border-collapse:collapse;font-size:.92rem;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;margin:14px 0}
th,td{padding:11px 13px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
thead th{background:#0f172a;color:#fff;font-size:.78rem;letter-spacing:.04em;text-transform:uppercase}
tbody tr:last-child td{border-bottom:none}
tbody tr:nth-child(even) td{background:#f8fafc}

/* price cards */
.price-card{background:#fff;border:2px solid var(--line);border-radius:16px;padding:24px;display:flex;flex-direction:column;gap:12px}
.price-card.featured{border-color:var(--blue);box-shadow:var(--shadow)}
.price-card .amount{font-size:2rem;font-weight:800;letter-spacing:-.02em}
.price-card ul{list-style:none;margin:0;display:flex;flex-direction:column;gap:8px;font-size:.9rem;color:var(--muted)}
.price-card li:before{content:"✓";color:var(--green);font-weight:800;margin-right:8px}
.tag{display:inline-block;background:#dbeafe;color:#1e40af;font-size:.72rem;font-weight:800;padding:4px 10px;border-radius:99px;text-transform:uppercase;letter-spacing:.05em;align-self:flex-start}

/* callouts */
.callout{border-left:5px solid var(--green);background:#f0fdf4;padding:14px 18px;border-radius:0 12px 12px 0;margin:18px 0}
.callout.warn{border-color:var(--amber);background:#fffbeb}
.callout.info{border-color:var(--blue);background:#eff6ff}
.callout p:last-child{margin-bottom:0}

/* faq */
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px}
details summary{cursor:pointer;font-weight:700;list-style:none}
details summary::-webkit-details-marker{display:none}
details summary:after{content:"+";float:right;color:var(--muted);font-weight:700}
details[open] summary:after{content:"–"}
details p{margin-top:10px;color:var(--muted);font-size:.93rem}

/* forms */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:700px){.form-grid{grid-template-columns:1fr}}
.form-grid .full{grid-column:1/-1}

/* footer */
footer{background:#0f172a;color:#94a3b8;padding:44px 0 34px;font-size:.87rem}
footer a{color:#cbd5e1;text-decoration:none}
footer a:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:26px}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr}}
footer h4{color:#fff;font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px}
footer ul{list-style:none;display:flex;flex-direction:column;gap:7px}
.footer-bottom{border-top:1px solid #1e293b;margin-top:28px;padding-top:18px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.8rem}

/* misc */
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.badge{background:#fff;border:1px solid var(--line);border-radius:99px;padding:6px 12px;font-size:.78rem;color:var(--muted);font-weight:600}