:root{--bg:#f5faf8;--ink:#18302b;--muted:#5b706a;--card:#fff;--brand:#178f76;--brand2:#0f5c4d;--line:#d7e8e2;--soft:#eaf8f4;--warn:#fff7e6}
*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;background:var(--bg);color:var(--ink);line-height:1.72}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.wrap{max-width:1220px;margin:auto;padding:0 22px}
.nav{display:flex;justify-content:space-between;align-items:center;padding:18px 0;gap:18px}
.logo{font-size:26px;font-weight:850;color:var(--brand2);letter-spacing:-.03em}
.logo small{display:block;font-size:12px;color:var(--muted);letter-spacing:0;font-weight:650}
nav{display:flex;gap:15px;flex-wrap:wrap}
nav a{font-weight:750;color:var(--ink);font-size:15px}
.hero{padding:58px 0;background:linear-gradient(135deg,#e9fbf6,#ffffff)}
.hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:28px;align-items:center}
h1{font-size:48px;line-height:1.05;margin:0 0 16px}
h2{font-size:31px;line-height:1.18;margin:30px 0 12px}
h3{font-size:22px;line-height:1.25;margin:18px 0 8px}
p{margin:0 0 15px}.lead{font-size:20px;color:#3e5550}
.card,.tool-card,.mini-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 8px 24px rgba(20,40,30,.05)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.grid-small{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px}
main{padding:30px 0}.btn{display:inline-block;background:var(--brand);color:#fff;padding:12px 18px;border-radius:12px;font-weight:800;margin:8px 8px 0 0}
.btn.secondary{background:#fff;color:var(--brand2);border:1px solid var(--line)}
.kicker{font-size:12px;font-weight:850;color:var(--brand);letter-spacing:.08em;text-transform:uppercase}.meta{font-size:14px;color:var(--muted)}
.notice{background:var(--soft);border-left:4px solid var(--brand);padding:16px;border-radius:12px;margin:18px 0}.warning{background:var(--warn);border-left-color:#d78a00}
footer{background:#12201d;color:#e2f0ec;padding:36px 0;margin-top:42px}
footer a{color:#fff}.footergrid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:24px}
input,textarea,select{width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;margin:6px 0 12px;font-size:16px}
button{background:var(--brand);color:#fff;border:0;border-radius:10px;padding:12px 16px;font-weight:850;cursor:pointer}
.result{background:#f7fbfa;border:1px dashed #b7d5cc;border-radius:12px;padding:14px;margin-top:10px;min-height:48px}
ul{padding-left:22px}.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:18px}.tag{display:inline-block;background:var(--soft);padding:5px 10px;border-radius:999px;font-size:13px;margin:3px}
.table{width:100%;border-collapse:collapse;background:#fff}.table th,.table td{border:1px solid var(--line);padding:10px;text-align:left}
@media(max-width:760px){.hero-grid{grid-template-columns:1fr}h1{font-size:36px}.footergrid{grid-template-columns:1fr}.nav{align-items:flex-start;flex-direction:column}}