:root{color-scheme:light;--night:#25163e;--purple:#43216d;--yellow:#ffd65a;--coral:#ff7868;--ink:#201a2b;--muted:#665f70;--ground:#f5f4f7;--white:#fff;--line:#dcd8e3;--success:#13765a;--danger:#b42318;--shadow:0 28px 75px rgba(37,22,62,.17)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--ground);font:16px/1.55 ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:var(--purple)}button,input,select{font:inherit}.skip{position:absolute;left:-9999px}.skip:focus{left:1rem;top:1rem;z-index:30;padding:.7rem 1rem;background:white}h1,h2,h3{line-height:1.06;letter-spacing:-.04em;text-wrap:balance}p{text-wrap:pretty}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(220,216,227,.9);backdrop-filter:blur(14px)}.nav{max-width:1160px;min-height:72px;margin:auto;padding:.7rem 1.3rem;display:flex;align-items:center;justify-content:space-between;gap:1.4rem}.brand{display:inline-flex;align-items:center;gap:.7rem;color:var(--ink);text-decoration:none;font-weight:650;letter-spacing:-.025em}.brand strong{font-weight:850}.brand-mark{width:38px;height:38px;position:relative;display:grid;place-items:center;color:var(--night);background:var(--yellow);border-radius:11px;font:850 .72rem ui-monospace,monospace}.brand-mark i{position:absolute;left:7px;right:7px;top:7px;height:2px;background:var(--night);box-shadow:0 5px 0 var(--night)}.brand-mark b{margin-top:12px}.nav-links{display:flex;gap:1.25rem}.nav-links a{color:var(--ink);text-decoration:none;font-weight:680;font-size:.92rem}.nav-links a:hover{text-decoration:underline;text-underline-offset:5px}
.hero{position:relative;overflow:hidden;color:white;background:var(--night)}.hero:before{content:"";position:absolute;width:720px;height:720px;right:-230px;top:-330px;border:1px solid rgba(255,214,90,.18);border-radius:50%;box-shadow:0 0 0 80px rgba(255,214,90,.04),0 0 0 160px rgba(255,214,90,.02)}.hero-inner{position:relative;z-index:1;max-width:1160px;min-height:650px;margin:auto;padding:5.5rem 1.3rem;display:grid;grid-template-columns:1fr .9fr;align-items:center;gap:5rem}.eyebrow{display:inline-flex;align-items:center;gap:.55rem;color:#ffe9a0;font:750 .75rem ui-monospace,monospace;letter-spacing:.08em;text-transform:uppercase}.eyebrow i{width:8px;height:8px;background:var(--coral);border-radius:50%}.hero h1{max-width:700px;margin:.7rem 0 1.25rem;color:white;font-size:clamp(3.5rem,7vw,6rem)}.hero h1 em{color:var(--yellow);font-style:normal}.hero-copy>p{max-width:620px;margin:0;color:#dfd8e7;font-size:1.16rem}.hero-actions{display:flex;align-items:center;gap:1.2rem;margin-top:2rem;flex-wrap:wrap}.hero-actions>span{color:#bdb4c8;font-size:.83rem}.hero-button{display:inline-flex;gap:.7rem;align-items:center;min-height:50px;padding:.75rem 1rem;color:var(--night);background:var(--yellow);border-radius:10px;text-decoration:none;font-weight:850;box-shadow:0 5px 0 #aa8421;transition:.16s}.hero-button:hover{transform:translateY(2px);box-shadow:0 3px 0 #aa8421}
.calendar-scene{position:relative;min-height:420px;display:grid;place-items:center}.calendar-card{width:min(410px,100%);padding:1.4rem;color:var(--ink);background:white;border:1px solid rgba(255,255,255,.5);border-radius:22px;box-shadow:var(--shadow);transform:rotate(1.5deg)}.calendar-head{display:grid;grid-template-columns:1fr auto;align-items:end;padding:.3rem .25rem 1rem;border-bottom:1px solid var(--line)}.calendar-head span{grid-column:1/-1;color:var(--purple);font:800 .7rem ui-monospace,monospace;letter-spacing:.1em}.calendar-head strong{font:850 3.6rem/1 ui-monospace,monospace;letter-spacing:-.04em}.calendar-head i{padding-bottom:.4rem;color:var(--muted);font:750 .8rem monospace;font-style:normal}.week,.days{display:grid;grid-template-columns:repeat(7,1fr);text-align:center}.week{padding:.9rem 0 .5rem;color:var(--muted);font:.68rem monospace}.days{gap:.3rem}.days i{height:42px;display:grid;place-items:center;border-radius:9px;font:750 .85rem monospace;font-style:normal}.days .today{color:var(--night);background:var(--yellow);box-shadow:inset 0 0 0 1px #d7ab27}.date-result{margin-top:1.2rem;padding:1rem;color:white;background:var(--purple);border-radius:13px}.date-result small,.date-result strong,.date-result span{display:block}.date-result small{color:#d8cce5;font:.66rem monospace;letter-spacing:.08em}.date-result strong{margin:.25rem 0;font-size:1.65rem}.date-result span{color:#ece6f2;font-size:.8rem}.time-chip{position:absolute;padding:.55rem .7rem;color:var(--ink);background:white;border-radius:9px;box-shadow:0 12px 30px rgba(0,0,0,.22);font:750 .7rem monospace}.chip-one{right:-6px;top:52px;transform:rotate(5deg)}.chip-two{left:-12px;bottom:60px;transform:rotate(-6deg)}.chip-three{right:16px;bottom:8px;color:#195c4a;background:#dff5eb;transform:rotate(2deg)}
.quick-proof{max-width:1160px;margin:-1px auto 0;display:grid;grid-template-columns:repeat(3,1fr);color:white;background:var(--purple)}.quick-proof span{padding:1.35rem 1.6rem;border-right:1px solid #67498b}.quick-proof span:last-child{border:0}.quick-proof b{margin-right:.45rem;color:var(--yellow);font:800 1.1rem ui-monospace,monospace}.wrap{max-width:1160px;margin:auto;padding:6rem 1.3rem}.section-head{display:grid;grid-template-columns:1fr .65fr;align-items:end;gap:3rem;margin-bottom:2.5rem}.section-label{color:var(--purple);font-weight:780;font-size:.82rem}.section-label.light{color:var(--yellow)}.section-head h2,.principles h2{margin:.5rem 0 0;font-size:clamp(2.6rem,5vw,4.5rem)}.section-head>p{margin:0;color:var(--muted);font-size:1.07rem}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.card{min-height:175px;display:grid;grid-template-columns:auto 1fr auto;gap:1.1rem;padding:1.35rem;color:var(--ink);text-decoration:none;background:white;border:1px solid var(--line);border-radius:15px;box-shadow:0 5px 18px rgba(37,22,62,.045);transition:.16s}.card-1,.card-2{min-height:220px;background:var(--purple);border-color:var(--purple);color:white}.card:hover{transform:translateY(-3px);border-color:#a99bb9;box-shadow:0 15px 36px rgba(37,22,62,.1)}.card-icon,.tool-icon{display:grid;place-items:center;flex:0 0 auto;color:var(--purple);background:#f0ebf5;border-radius:11px}.card-1 .card-icon,.card-2 .card-icon{color:var(--night);background:var(--yellow)}.card-icon{width:48px;height:48px}.card-icon svg,.tool-icon svg{width:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.card-copy small{color:var(--coral);font-size:.72rem;font-weight:800}.card-1 .card-copy small,.card-2 .card-copy small{color:var(--yellow)}.card h3{margin:.3rem 0 .45rem;font-size:1.3rem}.card p{margin:0;color:var(--muted)}.card-1 p,.card-2 p{color:#ddd4e6}.card-arrow{color:var(--purple);font-size:1.15rem}.card-1 .card-arrow,.card-2 .card-arrow{color:var(--yellow)}.principles{max-width:1160px;margin:0 auto 5.5rem;padding:4rem;display:grid;grid-template-columns:.9fr 1.1fr;gap:4rem;color:white;background:var(--night);border-radius:22px}.principles h2{color:white}.principles>div>p{color:#cfc6d8}.principle-list p{display:grid;grid-template-columns:155px 1fr;gap:1rem;margin:0;padding:1.15rem 0;border-bottom:1px solid #4a385d}.principle-list p:last-child{border:0}.principle-list span{color:#cfc6d8}
.tool-heading{max-width:820px;margin:auto;padding:3.5rem 1.25rem 2rem;text-align:center}.back-link{display:block;width:fit-content;margin:0 auto 1.6rem;color:var(--muted);text-decoration:none;font-weight:700}.tool-icon{width:60px;height:60px;margin:auto;color:var(--purple);background:#ece6f2}.tool-icon svg{width:29px}.tool-heading h1{margin:.9rem 0 .65rem;font-size:clamp(2.5rem,5vw,4.2rem)}.tool-heading p{max-width:670px;margin:auto;color:var(--muted);font-size:1.08rem}.tool-shell{max-width:840px;margin:auto;padding:0 1.25rem 4rem}.tool-panel{padding:clamp(1.2rem,4vw,2.3rem);background:white;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.live-controls{display:block}.field{display:grid;gap:.42rem;color:var(--ink);font-weight:750}.field small{color:var(--muted);font-weight:450}input,select{width:100%;min-height:50px;padding:.7rem .8rem;color:var(--ink);background:white;border:1px solid #a9a1b3;border-radius:9px}input:focus,select:focus,button:focus-visible,a:focus-visible{outline:3px solid rgba(255,120,104,.35);outline-offset:2px;border-color:var(--coral)}.check{grid-column:1/-1;display:flex;align-items:center;gap:.65rem;min-height:48px;padding:.65rem .8rem;background:var(--ground);border:1px solid var(--line);border-radius:9px;font-weight:700}.check input{width:19px;min-height:auto;height:19px}.button{min-height:50px;padding:.72rem 1.2rem;border:0;border-radius:9px;color:white;background:var(--purple);font-weight:850;cursor:pointer}.button:hover{background:var(--night)}.button.secondary{color:var(--night);background:var(--yellow)}.button.quiet{color:var(--ink);background:#ece9ef}.calculate{width:100%;margin-top:1.2rem}.button-row{display:flex;justify-content:center;gap:.7rem;flex-wrap:wrap}.result{margin-top:1.2rem;padding:1.25rem;background:#e7f6f0;border:1px solid #a8ddc9;border-radius:12px;text-align:center}.result[data-kind=error]{color:var(--danger);background:#fff1f0;border-color:#ffc9c5}.result-kicker{display:block;color:var(--success);font-size:.76rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase}.result strong{display:block;margin:.15rem 0;color:var(--ink);font-size:clamp(1.7rem,5vw,2.7rem);line-height:1.18}.result p{margin:.45rem 0 0;color:var(--muted)}.local-note{margin:1rem 0 0;color:var(--muted);text-align:center;font-size:.88rem}.local-note span{color:var(--success)}.timer-display{margin:.2rem 0 1.4rem;color:var(--night);font:800 clamp(3.2rem,12vw,6rem)/1 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:-.04em;text-align:center;font-variant-numeric:tabular-nums}.two-fields{max-width:400px;margin:0 auto 1.2rem;display:grid;grid-template-columns:1fr 1fr;gap:.8rem}.laps{max-height:190px;margin:1rem auto 0;padding:0;max-width:390px;overflow:auto;list-style-position:inside}.laps li{padding:.35rem .5rem;border-bottom:1px solid var(--line);font-variant-numeric:tabular-nums}.conversion-block+.conversion-block{margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid var(--line)}.conversion-block h2{margin:0 0 .8rem;font-size:1.25rem}.conversion-block .field{margin-bottom:.8rem}.content{max-width:820px;margin:auto;padding:1rem 1.25rem 4.5rem}.content.standalone{padding-top:4rem;min-height:65vh}.content h1{font-size:clamp(2.4rem,5vw,4rem)}.content h2{margin-top:2.5rem;font-size:1.75rem}.content li+li{margin-top:.55rem}.assumption{padding:1.15rem 1.25rem;border:1px solid #e3c968;border-radius:9px;background:#fff8d9}.assumption p{margin:.25rem 0 0;color:#4f4530}.mini-grid{display:grid;gap:.7rem}.mini-card{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:.9rem;padding:1rem;color:var(--ink);text-decoration:none;background:white;border:1px solid var(--line);border-radius:12px}.mini-card strong,.mini-card small{display:block}.mini-card small{margin-top:.2rem;color:var(--muted)}.ad-slot{max-width:970px;min-height:110px;margin:2rem auto;display:grid;place-items:center;color:var(--muted);background:#efedf1;border:1px dashed #c8c2cd;border-radius:10px;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase}.ad-slot[data-active=false]{display:none}.ad-separation{padding:0 1.25rem}.site-footer{color:white;background:#180e2a}.footer-inner{max-width:1160px;margin:auto;padding:3rem 1.3rem;display:grid;grid-template-columns:1fr 1.2fr auto;align-items:center;gap:2rem}.site-footer .brand{color:white}.footer-inner p{margin:0;color:#bfb5c8}.footer-links{display:flex;gap:1rem;flex-wrap:wrap}.footer-links a{color:#eee8f3}.footer-inner small{grid-column:1/-1;padding-top:1.4rem;border-top:1px solid #403151;color:#8f829b}
.tool-heading{position:relative;overflow:hidden;max-width:1160px;margin:2.4rem auto 1.5rem;padding:clamp(2.7rem,6vw,4.9rem) 1.25rem;color:white;background-color:var(--night);background-image:radial-gradient(circle at 80% 24%,rgba(255,216,76,.2),transparent 23%),radial-gradient(circle at 17% 92%,rgba(255,120,104,.17),transparent 27%),linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:auto,auto,28px 28px,28px 28px;border-radius:22px;text-align:center;box-shadow:0 28px 70px rgba(41,21,66,.2)}.tool-heading:after{content:"";position:absolute;width:280px;height:280px;right:5%;bottom:-165px;border:1px solid rgba(255,216,76,.16);border-radius:50%;box-shadow:0 0 0 38px rgba(255,216,76,.035),0 0 0 78px rgba(255,255,255,.018)}.tool-heading>*{position:relative;z-index:1}.tool-heading .back-link{color:#d5cce0}.tool-heading .tool-icon{display:grid;place-items:center;color:var(--night);background:var(--yellow);box-shadow:5px 5px 0 #8e6f13}.tool-heading h1{color:white}.tool-heading p{color:#ddd4e6}.tool-shell{max-width:900px}.tool-panel{position:relative;overflow:hidden;padding-top:2rem;border-color:#d6cfdd;box-shadow:0 28px 72px rgba(41,21,66,.14)}.tool-panel:before{content:"01  SET THE TIME   •   02  CALCULATE   •   03  CHECK THE RESULT";display:block;margin:-.35rem 0 1.3rem;padding:0 0 1rem;color:var(--purple);border-bottom:1px solid var(--line);font-size:.68rem;font-weight:850;letter-spacing:.08em}.tool-panel .controls:not(.live-controls) .field{padding:1rem;background:#fbf9fc;border:1px solid #e2dce7;border-radius:12px}.tool-panel .calculate{min-height:54px;background:linear-gradient(90deg,var(--purple),#744a9c);box-shadow:0 8px 22px rgba(75,43,105,.19)}.tool-panel .result{padding:1.55rem;border-radius:15px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.5)}.tool-panel .result strong{font-size:clamp(2rem,6vw,3.35rem)}
@media(max-width:760px){.hero-inner{min-height:auto;padding:4.5rem 1.2rem 3rem;grid-template-columns:1fr;gap:2.5rem}.hero h1{font-size:clamp(3rem,15vw,4.6rem)}.calendar-scene{min-height:390px}.time-chip{display:none}.quick-proof{grid-template-columns:1fr}.quick-proof span{border-right:0;border-bottom:1px solid #67498b}.section-head,.grid,.principles,.controls,.footer-inner{grid-template-columns:1fr}.wrap{padding-top:4.5rem}.section-head{gap:1rem}.card,.card-1,.card-2{min-height:auto}.principles{margin:0 1rem 4rem;padding:2rem 1.3rem;gap:1.2rem}.principle-list p{grid-template-columns:1fr;gap:.25rem}.nav-links a:not(:first-child){display:none}.timer-display{letter-spacing:-.04em}.footer-inner small{grid-column:1}.tool-heading{margin:1rem .75rem 1.5rem;border-radius:17px}.tool-panel:before{line-height:1.55}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}