:root{--violet:#6b30b3;--violet-dark:#52218f;--violet-bright:#8d52dc;--ink:#27213b;--muted:#645d73;--line:#e7e0f0;--surface:#fff;--soft:#f7f2fc;--gold:#e5b96f;--shadow:0 16px 45px rgba(54,24,91,.075)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:linear-gradient(180deg,#fdfbff 0,#fff 620px);color:var(--ink);font:16px/1.6 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
button,input,select{font:inherit}
button{cursor:pointer}
a{color:var(--violet)}
a:hover{color:var(--violet-dark)}
button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #a876e7;outline-offset:3px}
[hidden]{display:none!important}
.wrap{width:min(1180px,calc(100% - 40px));margin-inline:auto}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:16px;top:-60px;z-index:100;padding:10px 16px;background:#fff;border-radius:10px}
.skip-link:focus{top:12px}
.site-header{background:rgba(255,255,255,.94);border-bottom:1px solid #eee7f5;backdrop-filter:blur(12px);position:sticky;top:0;z-index:20}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px}
.brand{text-decoration:none;display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:17px;letter-spacing:-.03em;white-space:nowrap}
.brand:hover{color:var(--ink)}
.brand-mark{width:35px;height:35px;border-radius:11px;background:linear-gradient(145deg,#955ce4,#542096);color:#fff;display:grid;place-items:center;box-shadow:0 6px 14px rgba(100,45,171,.23)}
.brand em,.site-footer strong span{font-style:normal;color:var(--violet)}
.site-header nav{display:flex;align-items:center;gap:27px}
.site-header nav a{text-decoration:none;color:#565067;font-size:13px;font-weight:650;white-space:nowrap}
.site-header nav a:hover{color:var(--violet)}
.site-header nav .nav-all{color:var(--violet);background:#f2eafb;border-radius:10px;padding:9px 13px}
.breadcrumb{display:flex;align-items:center;gap:10px;padding:26px 0 0;color:#8c839c;font-size:12px}
.breadcrumb a{text-decoration:none;color:#756b88}
.hero{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(320px,.88fr);gap:38px;align-items:center;padding:38px 0 54px}
.eyebrow{margin:0 0 13px;color:var(--violet);font-size:11px;font-weight:800;letter-spacing:.15em}
.eyebrow-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#dbb16a;margin-right:7px;vertical-align:1px}
.hero h1{font-size:clamp(34px,4vw,54px);line-height:1.13;letter-spacing:-.055em;margin:0;max-width:750px}
.hero h1 span{color:var(--violet)}
.hero-lead{max-width:680px;font-size:16px;line-height:1.8;color:#5e566e;margin:21px 0 25px}
.hero-benefits{display:flex;flex-wrap:wrap;gap:9px}
.hero-benefits span{border:1px solid #e9dcf6;background:#fff;color:#57446d;border-radius:999px;padding:6px 13px;font-size:12px;font-weight:700}
.hero-visual{position:relative;height:310px;display:grid;place-items:center;overflow:visible}
.visual-orbit{position:absolute;width:86%;height:90%;border-radius:50%;background:radial-gradient(circle at 50% 48%,#f4eafd 0,#f7f1ff 53%,rgba(248,243,253,0) 71%)}
.visual-calendar{position:relative;width:240px;transform:rotate(-6deg);background:#fff;border:1px solid #e6d9f3;border-radius:25px;box-shadow:0 25px 46px rgba(76,35,135,.18);padding:20px 23px 19px}
.visual-top,.visual-bottom{display:flex;align-items:center;justify-content:space-between;color:#8a7b99;font-size:10px;letter-spacing:.17em;font-weight:800}
.visual-top span:last-child{color:var(--gold);font-size:19px}
.visual-month{font-size:51px;font-weight:850;line-height:1.1;letter-spacing:-.06em;margin:19px 0 14px}
.visual-month small{font-size:16px;color:var(--violet)}
.visual-dates{display:grid;grid-template-columns:repeat(7,1fr);align-items:center;gap:3px;padding:9px 0 18px;border-bottom:1px solid #ece5f4}
.visual-dates span,.visual-dates strong{text-align:center;font-size:13px;color:#a59ab3}
.visual-dates strong{background:var(--violet);color:#fff;border-radius:8px;padding:4px 0}
.visual-bottom{margin-top:16px;letter-spacing:.05em}
.visual-bottom span:nth-child(2){font-size:20px;color:var(--violet)}
.visual-moon{position:absolute;right:12%;top:14%;width:65px;height:65px;background:linear-gradient(145deg,#b286ed,#6b30b3);border-radius:19px;color:#fff;display:grid;place-items:center;font-size:48px;line-height:1;transform:rotate(12deg);box-shadow:0 15px 28px rgba(95,44,162,.22)}
.visual-float{position:absolute;bottom:9%;left:3%;background:#fff;border:1px solid #e8dcf6;color:#5d4580;border-radius:12px;padding:9px 13px;font-size:12px;font-weight:800;box-shadow:0 9px 28px rgba(68,30,112,.1)}
section{scroll-margin-top:86px}
.section-intro{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:19px}
.section-intro h2,.calendar-heading h2,.learn-section h2,.faq-section h2{font-size:clamp(25px,2.8vw,34px);line-height:1.25;letter-spacing:-.04em;margin:0}
.section-intro p:not(.eyebrow),.calendar-heading p:not(.eyebrow){color:var(--muted);font-size:14px;margin:8px 0 0}
.section-tag,.calendar-chip{white-space:nowrap;color:#6d3a9f;background:#f2e9fa;border:1px solid #ead8f9;border-radius:999px;padding:7px 12px;font-size:11px;font-weight:800}
.converter-shell{margin-bottom:36px}
.converter-layout{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:20px;align-items:stretch}
.card{border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:var(--shadow)}
.input-card{padding:25px}
.tablist{display:grid;grid-template-columns:1fr 1fr;gap:6px;background:#f4eff9;border:1px solid #eee4f7;border-radius:15px;padding:5px;margin-bottom:29px}
.tablist button{border:0;border-radius:11px;background:transparent;color:#6b5e7b;padding:12px 8px;font-weight:750;font-size:13px;line-height:1.3}
.tablist button[aria-selected=true]{color:var(--violet-dark);background:#fff;box-shadow:0 3px 12px rgba(74,33,119,.12)}
.tablist button span{font-size:17px;padding:0 2px}
.form-heading{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.form-icon{width:41px;height:41px;flex:none;border-radius:12px;background:#eee3f9;color:var(--violet);display:grid;place-items:center;font-size:14px;font-weight:800}
.form-heading h3{font-size:17px;line-height:1.2;margin:0}
.form-heading p{font-size:12px;color:#776d85;margin:3px 0 0}
.date-fields{display:grid;grid-template-columns:.72fr 1.42fr 1fr;gap:11px}
.field label{display:block;color:#4f455e;font-size:12px;font-weight:750;margin-bottom:7px}
.field input,.field select,.calendar-pickers input,.calendar-pickers select{display:block;width:100%;height:51px;border:1px solid #ded4e9;background:#fff;color:#30263c;border-radius:11px;padding:0 12px;outline:0;font-size:15px;min-width:0}
.field input:focus,.field select:focus,.calendar-pickers input:focus,.calendar-pickers select:focus{border-color:#8e55cb;box-shadow:0 0 0 3px rgba(139,82,207,.14)}
.field-note{font-size:11px;color:#82778f;margin:11px 0 23px}
.form-error{color:#9c202e;background:#fff1f2;border:1px solid #f9cad0;border-radius:11px;padding:10px 12px;font-size:12px;font-weight:650;margin:0 0 15px}
.form-actions{display:flex;flex-wrap:wrap;gap:9px;padding-top:20px;border-top:1px solid #eee7f4}
.button{border:1px solid transparent;min-height:44px;border-radius:11px;padding:10px 15px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:12px;font-weight:800;line-height:1.2;text-decoration:none;transition:transform .15s,background .15s,border-color .15s}
.button:hover:not(:disabled){transform:translateY(-1px)}
.button:disabled,.icon-button:disabled{opacity:.46;cursor:not-allowed}
.button.primary{background:var(--violet);color:#fff;box-shadow:0 8px 18px rgba(107,48,179,.18)}
.button.primary:hover{background:var(--violet-dark)}
.button.subtle{background:#f4ebfb;border-color:#e8d8f6;color:var(--violet-dark)}
.button.text{background:transparent;color:var(--violet);padding-left:8px;padding-right:8px}
.result-card{padding:27px;display:flex;flex-direction:column;min-height:405px;color:#fff;background:radial-gradient(circle at 100% 0,rgba(181,126,241,.5),transparent 45%),linear-gradient(145deg,#552098,#7033b4 60%,#4d1d88);border-color:#6b30b3;box-shadow:0 19px 37px rgba(91,37,158,.2)}
.result-top{display:flex;align-items:center;gap:10px;margin-bottom:15px}
.result-icon{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.14);display:grid;place-items:center;color:#f1d59e;font-size:19px}
.result-kicker{font-size:10px;letter-spacing:.16em;font-weight:850;color:#e6d1fb}
.result-card h2{font-size:14px;font-weight:700;color:#e6d2fb;margin:0 0 5px}
.result-main{font-size:clamp(28px,3.2vw,40px);font-weight:850;line-height:1.16;letter-spacing:-.045em;margin:0;min-height:49px}
.result-short{font-size:13px;color:#eedfff;margin:8px 0 0}
.result-divider{height:1px;background:rgba(255,255,255,.25);margin:22px 0 15px}
.result-other-label{font-size:11px;color:#dcc5f4;font-weight:700;margin:0}
.result-other{font-size:17px;font-weight:750;margin:3px 0 0}
.result-weekday{font-size:12px;color:#e9d6fa;margin:5px 0 0}
.result-method{display:flex;flex-direction:column;gap:2px;border:1px solid rgba(255,255,255,.2);border-radius:12px;padding:10px 13px;margin-top:22px}
.result-method span{font-size:10px;color:#dfc6f7;text-transform:uppercase;letter-spacing:.13em}
.result-method strong{font-size:11px;line-height:1.4}
.result-actions{display:flex;gap:9px;margin-top:16px}
.button.white{background:#fff;color:#5c289c}
.button.ghost-white{border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.08);color:#fff}
.result-disclaimer{margin-top:20px;padding-top:17px;border-top:1px solid rgba(255,255,255,.23);color:#f0e3fb;font-size:11px;line-height:1.6}
.result-disclaimer strong{color:#fff}
.calendar-section{padding:27px;margin-bottom:54px}
.calendar-heading{display:flex;align-items:start;justify-content:space-between;gap:18px}
.calendar-toolbar{display:flex;align-items:center;justify-content:center;gap:8px;margin:26px 0 20px}
.icon-button{width:45px;height:45px;flex:none;border:1px solid #e3d8ed;background:#fff;border-radius:11px;color:var(--violet);font-size:29px;line-height:1}
.icon-button:hover:not(:disabled){background:#f4ebfb}
.calendar-pickers{display:flex;align-items:center;gap:8px;min-width:0}
.calendar-pickers select{width:184px}
.calendar-pickers input{width:97px}
.calendar-today{margin-left:7px}
.calendar-weekdays,.calendar-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:7px}
.calendar-weekdays{border-bottom:1px solid #eae2f2;padding-bottom:9px;margin-bottom:9px}
.calendar-weekdays span{text-align:center;color:#776989;font-size:11px;font-weight:850}
.calendar-day{min-width:0;height:77px;text-align:left;border:1px solid #eee8f4;background:#fff;border-radius:12px;padding:9px 12px;display:flex;flex-direction:column;justify-content:space-between;color:#33293f}
.calendar-day:hover:not(:disabled){border-color:#9c67d7;background:#fbf7ff}
.calendar-day strong{font-size:17px;line-height:1;font-weight:800}
.calendar-day small{font-size:10px;color:#84778e;white-space:nowrap}
.calendar-day.is-today{border-color:#cfac65;background:#fff9ec}
.calendar-day.is-today strong{color:#8c5f14}
.calendar-day.is-selected{border-color:var(--violet);background:#efe3fa;box-shadow:inset 0 0 0 1px #a977d8}
.calendar-day.is-selected strong{color:var(--violet-dark)}
.calendar-day:disabled{opacity:.35;background:#faf9fb;cursor:not-allowed}
.calendar-legend{display:flex;gap:17px;flex-wrap:wrap;margin-top:17px;color:#7b7088;font-size:11px}
.calendar-legend span{display:inline-flex;align-items:center;gap:6px}
.legend-dot{width:10px;height:10px;display:inline-block;border-radius:3px}
.legend-dot.today{background:#ead29b;border:1px solid #b38d49}
.legend-dot.selected{background:#cdaaed;border:1px solid #8a51c8}
.method-section{margin-bottom:55px}
.method-grid,.learn-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.method-card,.learn-grid article{background:#fff;border:1px solid #eae2f2;border-radius:18px;padding:20px;box-shadow:0 7px 24px rgba(65,27,102,.035)}
.method-card>span{display:inline-grid;place-items:center;width:31px;height:31px;border-radius:9px;background:#f3e9fb;color:#7442b0;font-size:11px;font-weight:850}
.method-card h3,.learn-grid h3{font-size:16px;letter-spacing:-.02em;line-height:1.3;margin:16px 0 8px}
.method-card p,.learn-grid p{font-size:12px;line-height:1.7;color:#665d71;margin:0}
.source-note{font-size:11px;color:#716879;margin:18px 0 0;line-height:1.75}
.learn-section{margin-bottom:55px}
.learn-grid{margin-top:19px}
.learn-grid article{background:#faf7fd}
.learn-grid h3{margin-top:0}
.faq-section{margin-bottom:55px}
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:19px}
.faq-grid details{background:#fff;border:1px solid #e8e0ef;border-radius:13px;padding:0 17px}
.faq-grid summary{cursor:pointer;list-style:none;padding:15px 24px 15px 0;font-size:13px;font-weight:750;position:relative}
.faq-grid summary::-webkit-details-marker{display:none}
.faq-grid summary:after{content:'+';position:absolute;right:0;top:12px;font-size:20px;color:#8c5dc2;font-weight:400}
.faq-grid details[open] summary:after{content:'−'}
.faq-grid details p{margin:0 0 15px;color:#645a70;font-size:12px;line-height:1.7}
.related-section{margin-bottom:62px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.related-grid a{text-decoration:none;color:var(--ink);border:1px solid #e9e1f1;background:#fff;border-radius:15px;padding:15px;display:flex;align-items:center;gap:11px;min-width:0;box-shadow:0 6px 20px rgba(55,25,85,.04)}
.related-grid a:hover{border-color:#ad81d7;transform:translateY(-2px)}
.related-symbol{width:39px;height:39px;flex:none;border-radius:10px;background:#f1e6fa;color:var(--violet);display:grid;place-items:center;font-weight:800;font-size:13px}
.related-grid a span:nth-child(2){flex:1;min-width:0}
.related-grid strong,.related-grid small{display:block}
.related-grid strong{font-size:12px;line-height:1.3}
.related-grid small{font-size:10px;color:#81758d;margin-top:3px}
.related-grid a>span:last-child{color:var(--violet)}
.site-footer{background:#f9f6fc;border-top:1px solid #eee5f6}
.footer-inner{min-height:95px;display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.site-footer strong{font-size:14px;letter-spacing:-.02em}
.site-footer p{font-size:11px;color:#81768f;margin:0;flex:1}
.site-footer div div{display:flex;gap:18px}
.site-footer a{font-size:11px;text-decoration:none;color:#635473}
.toast{position:fixed;bottom:23px;left:50%;transform:translateX(-50%);z-index:50;background:#2f2045;color:#fff;border-radius:11px;padding:10px 16px;box-shadow:0 12px 32px rgba(22,12,41,.25);font-size:12px;font-weight:700;max-width:calc(100vw - 30px);text-align:center}
@media(max-width:900px){.hero{grid-template-columns:minmax(0,1fr) 290px;gap:10px}.converter-layout{grid-template-columns:1fr}.result-card{min-height:0}.method-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:700px){.wrap{width:min(100% - 28px,1180px)}.site-header nav{gap:12px}.site-header nav a:not(.nav-all){display:none}.header-inner{min-height:61px}.hero{grid-template-columns:1fr;padding:34px 0 42px}.hero-visual{display:none}.hero h1{font-size:37px}.hero-lead{font-size:14px}.section-tag,.calendar-chip{display:none}.method-grid,.learn-grid,.related-grid{grid-template-columns:1fr}.faq-grid{grid-template-columns:1fr}.calendar-section{padding:18px}}
@media(max-width:470px){.hero h1{font-size:32px}.hero-benefits span{font-size:10px}.section-intro h2,.calendar-heading h2,.learn-section h2,.faq-section h2{font-size:26px}.input-card,.result-card{padding:19px}.tablist button{font-size:11px;padding:11px 4px}.date-fields{grid-template-columns:.7fr 1.3fr .95fr;gap:7px}.field input,.field select{height:47px;padding:0 6px;font-size:13px}.form-actions .button.primary{width:100%}.form-actions .button.subtle,.form-actions .button.text{flex:1}.calendar-toolbar{gap:4px;justify-content:space-between}.icon-button{width:35px;height:42px}.calendar-pickers{gap:4px}.calendar-pickers select{width:118px}.calendar-pickers input{width:74px}.calendar-pickers select,.calendar-pickers input{height:42px;padding:0 5px;font-size:12px}.calendar-today{margin-left:0;padding:8px;font-size:10px;min-height:42px}.calendar-weekdays,.calendar-grid{gap:3px}.calendar-day{height:58px;padding:6px 5px;border-radius:8px}.calendar-day strong{font-size:14px}.calendar-day small{font-size:8px}.calendar-legend{gap:10px;font-size:9px}.result-main{font-size:30px}.footer-inner{padding:22px 0}.site-footer p{flex-basis:100%;order:3}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button{transition:none}}