:root{--teal:#087d76;--teal2:#0b9288;--dark:#123b44;--muted:#5d777d;--line:#dce9e7;--soft:#f2f8f7;--white:#fff;--warn:#fff8e8;--shadow:0 14px 40px rgba(18,59,68,.08)}
*{box-sizing:border-box}html{background:#f7faf9}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--dark);background:#f7faf9;line-height:1.55}a{color:var(--teal)}
.site-head{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.head-in{max-width:1120px;margin:auto;min-height:70px;padding:10px 20px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--dark)}.brand-mark{width:40px;height:40px;border-radius:13px;background:var(--teal);color:#fff;display:grid;place-items:center;font-size:25px}.brand-copy{display:flex;flex-direction:column;line-height:1}.brand strong{font-size:19px}.brand em{font-style:normal;color:var(--teal)}.brand small{font-size:9px;color:#7da6a3;font-weight:800;letter-spacing:.06em;margin-top:5px}.nav{display:flex;gap:18px}.nav a{text-decoration:none;color:var(--dark);font-size:14px;font-weight:800}.nav a:hover{color:var(--teal)}
.wrap{max-width:1020px;margin:auto;padding:24px 20px 64px}.crumb{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:18px}.crumb a{text-decoration:none;font-weight:750}
.hero,.calculator,.info-card,.content-card{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}.hero{padding:30px}.eyebrow{display:inline-flex;align-items:center;background:#edf7f6;color:var(--teal);border:1px solid #d5e9e6;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:850;margin-bottom:14px}h1{font-size:clamp(32px,5vw,46px);line-height:1.08;letter-spacing:-.035em;margin:0 0 12px}.hero>p{font-size:18px;color:var(--muted);max-width:760px}.notice{margin-top:20px;background:var(--warn);border:1px solid #f1dba5;border-radius:15px;padding:14px 16px;color:#71591e}
.calculator{margin-top:18px;overflow:hidden}.tabs{display:grid;grid-template-columns:1fr 1fr;background:#edf5f4;padding:7px;gap:6px;border-bottom:1px solid var(--line)}.tab{border:0;border-radius:13px;background:transparent;color:var(--muted);font:inherit;font-weight:900;padding:13px 12px;cursor:pointer}.tab.active{background:#fff;color:var(--teal);box-shadow:0 5px 14px rgba(18,59,68,.08)}.tab:focus-visible,.primary:focus-visible,.secondary:focus-visible,input:focus-visible{outline:3px solid rgba(8,125,118,.22);outline-offset:2px}
.calc-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:0}.input-card,.result-card{padding:28px}.result-card{background:linear-gradient(155deg,#f4fafa,#edf7f6);border-left:1px solid var(--line)}h3{font-size:21px;margin:0 0 12px}h4{font-size:17px;margin:0 0 8px}.muted{color:var(--muted)}label{display:block;font-weight:850;margin:22px 0 8px}input[type=date]{width:100%;min-height:52px;border:1px solid #cbdedb;border-radius:14px;padding:0 14px;font:inherit;color:var(--dark);background:#fff}.help{font-size:13px;color:var(--muted);margin:9px 0 0}.actions{display:flex;gap:10px;margin-top:24px}.primary,.secondary{min-height:48px;padding:0 20px;border-radius:13px;font:inherit;font-weight:900;cursor:pointer}.primary{border:0;background:var(--teal);color:#fff}.primary:hover{background:var(--teal2)}.secondary{background:#fff;color:var(--teal);border:1px solid #bad9d5}.empty{color:var(--muted);padding:16px 0}.result-main{font-size:34px;font-weight:950;letter-spacing:-.03em;color:var(--dark);margin:8px 0 2px}.result-sub{font-size:15px;color:var(--muted);margin-bottom:18px}.result-list{display:grid;gap:10px}.result-row{display:flex;justify-content:space-between;gap:14px;border-top:1px solid #d5e6e3;padding-top:10px}.result-row span{color:var(--muted)}.result-row strong{text-align:right}.result-alert{margin-top:16px;border-radius:13px;padding:12px 13px;background:#fff8e8;border:1px solid #eddcae;color:#725b22}.error{background:#fff0f0;border:1px solid #f2c7c7;color:#8a3636;padding:14px;border-radius:14px}
.info-card,.content-card{margin-top:18px;padding:28px}.milestones{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:18px}.milestone{border:1px solid var(--line);border-radius:15px;padding:14px;background:#fbfdfd}.milestone strong{display:block;font-size:16px}.milestone span{display:block;color:var(--muted);font-size:13px;margin-top:4px}.content-card>h3{margin-top:28px}.content-card>h3:first-child{margin-top:0}.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.content-grid>div{background:var(--soft);border-radius:16px;padding:18px}.content-grid p{margin:0;color:#42656c}.refs{padding-left:20px}.refs li{margin:10px 0;color:#42656c}.article-link{margin-top:24px;background:#edf7f6;border-radius:14px;padding:16px}
.site-foot{background:#123b44;color:#d5e8e6;padding:34px 20px}.foot-grid{max-width:1020px;margin:auto;display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:30px}.site-foot h3{color:#fff;font-size:15px}.site-foot p{font-size:13px;color:#aac6c4}.site-foot a{color:#fff}
@media(max-width:760px){.head-in{min-height:62px;padding:9px 14px}.nav{display:none}.brand-mark{width:37px;height:37px}.brand strong{font-size:17px}.wrap{padding:16px 12px 48px}.hero{padding:22px;border-radius:19px}.hero>p{font-size:16px}.calculator,.info-card,.content-card{border-radius:19px}.calc-grid{grid-template-columns:1fr}.result-card{border-left:0;border-top:1px solid var(--line)}.input-card,.result-card,.info-card,.content-card{padding:22px}.milestones{grid-template-columns:1fr 1fr}.content-grid,.foot-grid{grid-template-columns:1fr}.actions{display:grid;grid-template-columns:1fr 1fr}.tabs{position:sticky;top:62px;z-index:5}.result-main{font-size:30px}}
@media(max-width:390px){.milestones{grid-template-columns:1fr}.actions{grid-template-columns:1fr}.tab{font-size:14px;padding:12px 6px}}