*{box-sizing:border-box}
body{margin:0;background:#f7f9fc;color:#1a2233;font:17px/1.75 'Segoe UI',system-ui,-apple-system,Roboto,sans-serif}
a{color:#127a5b;text-decoration:none}a:hover{text-decoration:underline}
.top{background:#fff;border-bottom:1px solid #e6ecf3;position:sticky;top:0;z-index:20}
.top .in{max-width:960px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.logo{font-weight:800;font-size:1.12rem;color:#0f2e24;display:flex;align-items:center;gap:8px}
.logo .b{background:#127a5b;color:#fff;width:30px;height:30px;border-radius:8px;display:flex;align-items:center;justify-content:center}
.top nav{margin-left:auto;display:flex;gap:16px;font-size:.92rem;flex-wrap:wrap}
.wrap{max-width:820px;margin:0 auto;padding:26px 20px 70px}
.hero{background:linear-gradient(135deg,#0f2e24,#127a5b);color:#fff;border-radius:18px;padding:44px 34px;margin:14px 0 8px}
.hero h1{font-size:2.15rem;line-height:1.15;margin:0 0 .3em}
.hero p{font-size:1.12rem;color:#d6efe6;max-width:660px}
.badge{display:inline-block;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.25);padding:5px 12px;border-radius:20px;font-size:.8rem;margin-bottom:14px}
h1{font-size:2rem;line-height:1.2;color:#0f2e24}
h2{font-size:1.4rem;margin:1.7em 0 .4em;color:#0f2e24}
h3{font-size:1.12rem;margin:1.3em 0 .35em;color:#12403180}
h3{color:#123a2e}
.lead{font-size:1.13rem;color:#40546b}
.meta{color:#7d8ba0;font-size:.86rem;margin:-.3em 0 1em}
.btn{display:inline-block;background:#127a5b;color:#fff;padding:13px 26px;border-radius:10px;font-weight:700;margin:12px 8px 12px 0}
.btn.alt{background:#fff;color:#127a5b;border:1.5px solid #127a5b}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 0}
@media(max-width:640px){.grid{grid-template-columns:1fr}.hero h1{font-size:1.7rem}}
.card{background:#fff;border:1px solid #e6ecf3;border-radius:12px;padding:18px 20px}
.module{margin:26px 0 6px}
.module .mh{font-size:.8rem;letter-spacing:.5px;text-transform:uppercase;color:#127a5b;font-weight:800}
.module h2{margin:.1em 0 .3em}
.lessons{list-style:none;padding:0;counter-reset:l;margin:8px 0 4px}
.lessons li{counter-increment:l;background:#fff;border:1px solid #e6ecf3;border-radius:12px;margin:8px 0}
.lessons li a{display:flex;gap:14px;align-items:center;padding:14px 18px;color:#1a2233}
.lessons li a::before{content:"L"counter(l);flex:0 0 40px;height:32px;background:#e7f5ef;color:#127a5b;border-radius:9px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.8rem}
.tip{background:#eef7f2;border-left:4px solid #127a5b;border-radius:8px;padding:16px 18px;margin:22px 0}
.warn{background:#fff5ec;border-left:4px solid #e08a2b;border-radius:8px;padding:16px 18px;margin:22px 0}
.todo{background:#f0f4ff;border:1px solid #d5e0ff;border-radius:12px;padding:16px 20px;margin:24px 0}
.todo h3{margin-top:0;color:#2b4bb0}
.todo ul{margin:.3em 0}
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:.96rem}
th,td{text-align:left;padding:9px 11px;border-bottom:1px solid #e6ecf3}
th{color:#0f2e24}
nav.bc{font-size:.85rem;color:#7d8ba0;margin-bottom:12px}
.pn{display:flex;justify-content:space-between;gap:12px;margin-top:36px;border-top:1px solid #e6ecf3;padding-top:18px;font-size:.94rem}
.progress{font-size:.82rem;color:#7d8ba0;margin-bottom:4px}
ul,ol{padding-left:22px}li{margin:.28em 0}
footer{background:#0f2e24;color:#bfe3d5;margin-top:50px}
footer .in{max-width:820px;margin:0 auto;padding:26px 20px;font-size:.88rem}
footer a{color:#9fe0c6}
.discl{font-size:.8rem;color:#8595a8;margin-top:8px}