:root{
  color-scheme:light;
  --bg:#eaf5ff;--bg-deep:#d9ebfa;--surface:rgba(255,255,255,.48);--surface-strong:rgba(255,255,255,.72);--surface-soft:rgba(255,255,255,.24);
  --ink:#10243b;--muted:#607086;--line:rgba(38,70,105,.13);--line-strong:rgba(255,255,255,.72);
  --accent:#4a6ff2;--accent-2:#1ca8c8;--accent-soft:rgba(74,111,242,.13);--danger:#c84561;--ok:#158864;
  --screen:#dcefe7;--screen-ink:#17392e;--key:rgba(255,255,255,.58);--key-op:rgba(75,110,240,.14);
  --shadow:0 26px 80px rgba(35,70,115,.16);--shadow-soft:0 14px 38px rgba(35,70,115,.12);
  --glass-blur:26px;--radius-xl:32px;--radius-lg:24px;--radius-md:18px;
}
html[data-theme="night"]{
  color-scheme:dark;
  --bg:#050812;--bg-deep:#090f20;--surface:rgba(13,21,40,.54);--surface-strong:rgba(18,29,52,.74);--surface-soft:rgba(255,255,255,.055);
  --ink:#f1f6ff;--muted:#9eacc0;--line:rgba(187,210,255,.13);--line-strong:rgba(255,255,255,.16);
  --accent:#8399ff;--accent-2:#59d4dc;--accent-soft:rgba(131,153,255,.15);--danger:#ff7890;--ok:#67d5ad;
  --screen:#111d24;--screen-ink:#d8faea;--key:rgba(255,255,255,.075);--key-op:rgba(118,145,255,.13);
  --shadow:0 34px 90px rgba(0,0,0,.48);--shadow-soft:0 16px 42px rgba(0,0,0,.3);
}
*{box-sizing:border-box}
html{min-height:100%;background:var(--bg);transition:background-color 2.4s ease,color 2.4s ease}
body{margin:0;min-height:100vh;padding:0 0 120px;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);overflow-x:hidden;transition:background-color 2.4s ease,color 2.4s ease}
button,input,select,textarea{font:inherit}
button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 42%,transparent);outline-offset:2px}
svg{display:block}
.app-bg{position:fixed;inset:0;z-index:-3;overflow:hidden;background:linear-gradient(145deg,rgba(236,247,255,.95),rgba(255,248,232,.7)),url('../assets/background-light.png') center/cover no-repeat;transition:background 2.4s ease,filter 2.4s ease}
html[data-theme="night"] .app-bg{background:radial-gradient(circle at 18% 20%,rgba(78,91,185,.2),transparent 32%),radial-gradient(circle at 80% 75%,rgba(36,167,177,.11),transparent 34%),linear-gradient(160deg,#03050b 0%,#07101d 48%,#080a16 100%)}
.app-bg:after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(255,255,255,.11),transparent 30%,rgba(255,255,255,.035) 58%,transparent 78%);opacity:.8;transition:opacity 2.4s ease}
html[data-theme="night"] .app-bg:after{opacity:.26}
.aurora{position:absolute;border-radius:50%;filter:blur(18px);opacity:.32;transition:transform 2.6s cubic-bezier(.22,.8,.2,1),opacity 2.4s ease,background 2.4s ease}
.aurora-a{width:42vw;height:42vw;min-width:340px;min-height:340px;left:-13vw;top:-14vw;background:radial-gradient(circle,rgba(115,196,255,.65),transparent 68%)}
.aurora-b{width:38vw;height:38vw;min-width:320px;min-height:320px;right:-11vw;bottom:-14vw;background:radial-gradient(circle,rgba(255,199,111,.55),transparent 68%)}
html[data-theme="night"] .aurora-a{background:radial-gradient(circle,rgba(104,89,255,.38),transparent 68%);transform:translate(10vw,14vh) scale(1.25)}
html[data-theme="night"] .aurora-b{background:radial-gradient(circle,rgba(33,191,207,.24),transparent 68%);transform:translate(-8vw,-10vh) scale(1.16)}
.stars{position:absolute;inset:0;opacity:0;transition:opacity 2.2s ease;background-image:radial-gradient(circle,rgba(255,255,255,.68) 1px,transparent 1.4px),radial-gradient(circle,rgba(171,196,255,.45) .8px,transparent 1.3px);background-size:91px 91px,137px 137px;background-position:12px 18px,63px 37px}
html[data-theme="night"] .stars{opacity:.48}
.glass{background:linear-gradient(145deg,color-mix(in srgb,var(--surface-strong) 70%,transparent),color-mix(in srgb,var(--surface) 72%,transparent));border:1px solid var(--line-strong);box-shadow:var(--shadow-soft),inset 0 1px 0 rgba(255,255,255,.22);backdrop-filter:blur(var(--glass-blur)) saturate(150%);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(150%);transition:background 2.2s ease,border-color 2.2s ease,box-shadow 2.2s ease,color 2.2s ease,transform .35s ease}
.glass-subtle{background:var(--surface-soft);border:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.shell,main{width:min(1180px,calc(100% - 36px));margin:0 auto}
.shell{padding-top:18px}
main{padding-top:18px}
.top-header{position:sticky;top:12px;z-index:120;min-height:74px;border-radius:28px;display:grid;grid-template-columns:54px 1fr 54px;align-items:center;padding:10px 14px}
.header-balance{width:54px;height:54px}
.icon-button{display:grid;place-items:center;border:0;background:transparent;color:inherit;cursor:pointer}
.icon-button svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.85;stroke-linecap:round;stroke-linejoin:round}
.header-menu{width:48px;height:48px;border-radius:16px;border:1px solid var(--line);background:var(--surface-soft)}
.brand{min-width:0;display:flex;align-items:center;justify-content:center;gap:12px;text-align:left}.brand img{width:52px;height:52px;object-fit:contain}.brand h1,.brand strong{margin:0;font-size:1rem;letter-spacing:-.02em}.brand p{margin:3px 0 0;color:var(--muted);font-size:.72rem;letter-spacing:.03em}
.page-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:12px}
.nav-card{position:relative;min-width:0;min-height:104px;border-radius:24px;padding:13px;display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);overflow:hidden}
.nav-card:before{content:"";position:absolute;inset:auto -18% -55% 24%;height:90%;background:radial-gradient(circle,color-mix(in srgb,var(--accent) 20%,transparent),transparent 68%);opacity:.6;transition:transform .35s ease,opacity .35s ease}
.nav-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.nav-card:hover:before{transform:scale(1.18);opacity:.9}.nav-card.active{border-color:color-mix(in srgb,var(--accent) 45%,var(--line-strong));box-shadow:0 16px 38px color-mix(in srgb,var(--accent) 13%,transparent)}
.nav-card.flash{animation:cardReturn .52s ease}
@keyframes cardReturn{0%{opacity:1;transform:scale(1)}42%{opacity:.15;transform:scale(.95)}100%{opacity:1;transform:scale(1)}}
.nav-icon{position:relative;z-index:1;width:48px;height:48px;flex:0 0 48px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(145deg,var(--surface-strong),var(--surface-soft));border:1px solid var(--line);color:var(--accent)}
.nav-icon>svg{width:34px;height:34px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.nav-icon>svg text{fill:currentColor;stroke:none;font-size:7.5px;font-weight:800;font-family:inherit}.nav-icon.crypto>svg{width:38px;height:38px}.nav-icon.crypto>img{position:absolute;width:19px;height:19px;object-fit:contain}.nav-copy{min-width:0;position:relative;z-index:1}.nav-copy strong{display:block;font-size:.86rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nav-copy span{display:block;margin-top:4px;color:var(--muted);font-size:.68rem;line-height:1.25}
.intro{border-radius:var(--radius-xl);padding:30px}.compact-intro{padding:27px 30px}.eyebrow,.panel-kicker,.preference-label{margin:0 0 7px;color:var(--accent);font-size:.69rem;letter-spacing:.14em;text-transform:uppercase;font-weight:850}.intro h2{margin:0;font-size:clamp(2.1rem,5vw,4rem);letter-spacing:-.06em;line-height:.98}.intro>p:not(.eyebrow){max-width:780px;margin:13px 0 0;color:var(--muted);line-height:1.65;font-size:.92rem}.badge-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:17px}.badge{padding:7px 11px;border-radius:999px;background:var(--surface-soft);border:1px solid var(--line);font-size:.72rem;font-weight:750;color:var(--muted)}
.content-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);gap:16px;margin-top:16px;align-items:start}.content-grid.single-layout{grid-template-columns:minmax(0,1fr)}.single-layout>.calc-shell{width:min(900px,100%);justify-self:center}.smart-layout{grid-template-columns:minmax(0,1.45fr) minmax(290px,.55fr)}
.calc-shell{position:relative;min-width:0;border-radius:36px;padding:22px;overflow:hidden;box-shadow:var(--shadow);transition:background 2.2s ease,border-color 2.2s ease,box-shadow 2.2s ease,transform 2.4s cubic-bezier(.22,.8,.2,1)}
.calc-shell:before{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(115deg,rgba(255,255,255,.16),transparent 28%,transparent 65%,rgba(255,255,255,.055));opacity:.72;transition:opacity 2.2s ease}.calc-shell:after{content:"";position:absolute;width:240px;height:240px;border-radius:50%;right:-90px;bottom:-120px;pointer-events:none;background:radial-gradient(circle,color-mix(in srgb,var(--accent) 30%,transparent),transparent 70%);filter:blur(2px);transition:transform 2.4s cubic-bezier(.22,.8,.2,1),background 2.2s ease}
.calc-shell[data-calculator="currency"]:after{background:radial-gradient(circle,rgba(53,199,150,.25),transparent 70%)}.calc-shell[data-calculator="crypto"]:after{background:radial-gradient(circle,rgba(255,190,68,.26),transparent 70%)}.calc-shell[data-calculator="measurements"]:after{background:radial-gradient(circle,rgba(70,173,255,.25),transparent 70%)}
html[data-theme="night"] .calc-shell:after{transform:translate(-48px,-18px) scale(1.28)}
body.theme-shifting .calc-shell[data-calculator="smart"]:after{animation:smartMorph 2.55s ease both}body.theme-shifting .calc-shell[data-calculator="currency"]:after{animation:currencyMorph 2.55s ease both}body.theme-shifting .calc-shell[data-calculator="crypto"]:after{animation:cryptoMorph 2.55s ease both}body.theme-shifting .calc-shell[data-calculator="measurements"]:after{animation:measureMorph 2.55s ease both}
@keyframes smartMorph{0%{transform:translate(0) scale(1)}45%{transform:translate(-150px,-85px) scale(1.7)}100%{transform:translate(-48px,-18px) scale(1.28)}}@keyframes currencyMorph{0%{transform:translate(0)}45%{transform:translate(-310px,-40px) scale(1.2)}100%{transform:translate(-48px,-18px) scale(1.28)}}@keyframes cryptoMorph{0%{transform:rotate(0) scale(1)}50%{transform:rotate(155deg) scale(1.8)}100%{transform:rotate(300deg) translate(-35px,-12px) scale(1.28)}}@keyframes measureMorph{0%{transform:translate(0) scale(1)}48%{transform:translate(-180px,35px) scaleX(1.8) scaleY(.8)}100%{transform:translate(-48px,-18px) scale(1.28)}}
.device-status{position:relative;z-index:1;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;color:var(--muted);font-size:.72rem;margin-bottom:12px}.device-status .center{font-weight:850;letter-spacing:.12em}.signal{justify-self:end;display:flex;align-items:end;gap:2.5px;height:15px}.signal i{width:3.5px;border-radius:3px;background:currentColor;display:block}.signal i:nth-child(1){height:4px}.signal i:nth-child(2){height:7px}.signal i:nth-child(3){height:11px}.signal i:nth-child(4){height:15px}.battery{display:inline-flex;gap:5px;align-items:center}.battery-box{width:27px;height:12px;border:1.5px solid currentColor;border-radius:3px;padding:1.5px}.battery-fill{display:block;height:100%;width:82%;border-radius:1px;background:currentColor}.battery-tip{width:2px;height:6px;background:currentColor;border-radius:0 2px 2px 0}
.screen{position:relative;z-index:1;border-radius:24px;background:linear-gradient(155deg,color-mix(in srgb,var(--screen) 96%,white 4%),var(--screen));color:var(--screen-ink);padding:18px;min-height:122px;border:1px solid color-mix(in srgb,var(--screen-ink) 13%,transparent);box-shadow:inset 0 5px 22px rgba(0,0,0,.08),0 10px 28px rgba(0,0,0,.05);transition:background 2s ease,color 2s ease}.screen .label{font-size:.68rem;opacity:.64;letter-spacing:.12em;text-transform:uppercase;font-weight:750}.screen input,.screen textarea{width:100%;max-width:100%;border:0;background:transparent;color:inherit;outline:0;font-weight:760;letter-spacing:-.035em}.screen input{font-size:clamp(1.75rem,5vw,3rem);text-align:right;padding:8px 0 0}.screen textarea{font-size:.96rem;min-height:82px;resize:vertical;line-height:1.5;padding-top:11px}.screen .expression{text-align:right;min-height:20px;font-size:.8rem;opacity:.64;overflow-wrap:anywhere}
.mode-switch{position:relative;z-index:1;display:flex;gap:8px;margin:14px 0}.calc-mode-switch{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}.pill{min-width:0;border:1px solid var(--line);background:var(--key);color:var(--ink);padding:10px 14px;border-radius:999px;cursor:pointer;font-weight:780;font-size:.78rem;transition:transform .16s ease,background .25s ease,border-color .25s ease,box-shadow .25s ease;color .25s ease}.pill:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(0,0,0,.08)}.pill.active,.primary-pill{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border-color:transparent;box-shadow:0 10px 26px color-mix(in srgb,var(--accent) 25%,transparent)}.premium-mode:after{content:"PRO";display:inline-block;margin-left:6px;padding:2px 5px;border-radius:999px;font-size:.48rem;letter-spacing:.09em;background:var(--accent-soft);color:var(--accent);vertical-align:2px}.pill.active.premium-mode:after{background:rgba(255,255,255,.17);color:#fff}.pill.locked{display:inline-flex;align-items:center;justify-content:center;gap:7px}.pill.locked svg,.swap-pill svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.pill.locked:after{content:"PREMIUM";font-size:.48rem;letter-spacing:.08em;padding:3px 5px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.keypad{position:relative;z-index:1;display:grid;gap:8px}.keypad.basic{grid-template-columns:repeat(4,minmax(0,1fr))}.keypad.scientific{grid-template-columns:repeat(6,minmax(0,1fr))}.key{min-width:0;min-height:56px;border-radius:16px;border:1px solid var(--line);background:var(--key);color:var(--ink);font-weight:800;cursor:pointer;box-shadow:0 7px 16px rgba(0,0,0,.065),inset 0 1px 0 rgba(255,255,255,.12);transition:transform .12s ease,background 1.8s ease,color 1.8s ease,border-color 1.8s ease}.key:active{transform:translateY(2px) scale(.98)}.key.op{background:var(--key-op)}.key.equals{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border-color:transparent}.key.danger{color:var(--danger)}
.smart-inputs{position:relative;z-index:1;display:grid;gap:11px}.smart-actions{display:flex;gap:8px;flex-wrap:wrap}.smart-answer{min-height:62px}.feature-callout{padding:12px 14px;border-radius:16px;border:1px solid var(--line);background:var(--surface-soft);font-size:.8rem;color:var(--muted);overflow-wrap:anywhere}.premium-note{font-size:.72rem;color:var(--muted);line-height:1.45}.scientific-tools{justify-content:flex-end;margin-top:0}
.side-stack{display:grid;gap:14px;align-content:start}.side-card{border-radius:26px;padding:19px;min-width:0}.side-card-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}.side-card h3{margin:0;font-size:1rem}.side-card>p:not(.eyebrow){color:var(--muted);line-height:1.55;font-size:.82rem}.speech-card{overflow:hidden}.voice-persona-panel{display:grid;grid-template-rows:0fr;opacity:0;transform:translateY(-8px);transition:grid-template-rows .42s cubic-bezier(.22,.8,.2,1),opacity .32s ease,transform .42s cubic-bezier(.22,.8,.2,1);pointer-events:none}.voice-persona-panel.open{grid-template-rows:1fr;opacity:1;transform:translateY(0);pointer-events:auto}.voice-persona-inner{min-height:0;overflow:hidden;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.voice-card{min-width:0;border-radius:18px;padding:12px 9px;display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--ink);cursor:pointer;text-align:center;transition:transform .2s ease,border-color .2s ease,background .2s ease}.voice-card:hover{transform:translateY(-2px)}.voice-card.active{border-color:color-mix(in srgb,var(--accent) 52%,var(--line));background:var(--accent-soft)}.voice-avatar{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(145deg,var(--surface-strong),var(--surface-soft));border:1px solid var(--line);color:var(--accent)}.voice-avatar svg{width:34px;height:34px;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round}.voice-copy{min-width:0}.voice-copy strong{display:block;font-size:.78rem}.voice-copy small{display:block;margin-top:3px;color:var(--muted);font-size:.62rem;line-height:1.25}.premium-card{position:relative;overflow:hidden}.premium-card:after{content:"";position:absolute;width:140px;height:140px;border-radius:50%;right:-60px;top:-65px;background:radial-gradient(circle,var(--accent-soft),transparent 70%);pointer-events:none}.premium-module{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;border-top:1px solid var(--line)}.premium-module strong{display:block;font-size:.78rem}.premium-module span{display:block;color:var(--muted);font-size:.66rem;margin-top:2px}.install-btn{flex:0 0 auto;border:1px solid var(--line);background:var(--key);color:var(--ink);padding:8px 10px;border-radius:12px;cursor:pointer;font-size:.68rem;font-weight:780}
.switch{position:relative;flex:0 0 auto;width:50px;height:29px;border-radius:999px;border:1px solid var(--line);background:rgba(100,115,135,.25);cursor:pointer;padding:0;transition:background .25s ease,border-color .25s ease}.switch span,.switch:after{content:"";position:absolute;width:21px;height:21px;border-radius:50%;background:#fff;top:3px;left:4px;box-shadow:0 3px 8px rgba(0,0,0,.18);transition:transform .28s cubic-bezier(.22,.8,.2,1)}.switch>span{display:none}.switch.on{background:linear-gradient(135deg,var(--accent),var(--accent-2));border-color:transparent}.switch.on:after{transform:translateX(20px)}
.form-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 48px minmax(0,1fr);gap:11px;align-items:end}.field{min-width:0;display:grid;gap:7px}.field label{color:var(--muted);font-size:.68rem;font-weight:820;text-transform:uppercase;letter-spacing:.095em}.field input,.field select,.field textarea{width:100%;max-width:100%;min-width:0;min-height:50px;border-radius:15px;border:1px solid var(--line);background:var(--key);color:var(--ink);padding:0 12px;outline:none;transition:background 1.8s ease,border-color 1.8s ease,color 1.8s ease}.field select{appearance:auto}.swap{width:48px;height:48px;border-radius:15px;border:1px solid var(--line);background:var(--key);color:var(--ink);cursor:pointer}.big-result{position:relative;z-index:1;margin-top:13px;border-radius:22px;padding:18px;background:var(--surface-soft);border:1px solid var(--line);min-width:0}.big-result small,.purchase-result small{color:var(--muted);font-size:.7rem;text-transform:uppercase;letter-spacing:.08em}.big-result strong,.purchase-result strong{display:block;font-size:clamp(1.45rem,4vw,2.65rem);margin-top:5px;letter-spacing:-.04em;overflow-wrap:anywhere}.rate-meta{font-size:.7rem;color:var(--muted);margin-top:7px;line-height:1.45;overflow-wrap:anywhere}.action-wide{width:100%;margin-top:13px}.quote-field,.crypto-amount{margin-top:11px}.asset-divider{height:1px;background:var(--line);align-self:center}.purchase-card{margin-top:13px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px;align-items:end}.purchase-result{min-width:0;text-align:right}
.measure-shell{overflow:hidden}.measure-panels{position:relative;z-index:1;display:grid;gap:13px;min-width:0;max-width:100%;overflow:hidden}.measurement-card{min-width:0;max-width:100%;overflow:hidden;padding:15px;border-radius:22px;border:1px solid var(--line);background:var(--surface-soft);transition:background 1.8s ease,border-color 1.8s ease}.panel-title{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.panel-title h3{margin:0;font-size:1rem}.panel-copy{margin:8px 0 0;color:var(--muted);font-size:.75rem;line-height:1.5}.category-field{margin-top:13px}.equation{display:grid;grid-template-columns:minmax(0,1fr) 26px minmax(0,1fr);align-items:stretch;gap:8px;margin-top:13px;min-width:0}.equation .measurement-card{padding:12px}.unit-side{display:flex;align-items:stretch}.unit-side .field{width:100%}.unit-side input,.unit-side select{font-size:.78rem;padding-left:9px;padding-right:9px}.result-side .metric{display:flex;align-items:center;justify-content:flex-end;min-height:50px;text-align:right}.metric{min-width:0;font-size:clamp(1.15rem,3.2vw,1.75rem);font-weight:900;letter-spacing:-.05em;overflow-wrap:anywhere}.equals-glyph{display:grid;place-items:center;font-size:1.15rem;font-weight:900;color:var(--muted)}.measure-footer{display:grid;grid-template-columns:auto minmax(0,1fr);gap:9px;align-items:center;margin-top:11px}.swap-pill{display:inline-flex;align-items:center;gap:7px;white-space:nowrap}.equation-readout{margin:0;text-align:right}.lab-mark{flex:0 0 auto;width:34px;height:34px;border-radius:12px;display:grid;place-items:center;font-weight:900;color:var(--accent);background:var(--accent-soft);border:1px solid var(--line)}
.ccc-table{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;margin-top:15px}.ccc-cell{min-width:0;padding:10px;border-radius:13px;border:1px solid var(--line);background:var(--surface-soft);font-size:.74rem;text-align:center}.ccc-cell strong{display:block}.contact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.drawer-backdrop{position:fixed;inset:0;z-index:180;background:rgba(1,4,12,.35);opacity:0;pointer-events:none;transition:opacity .32s ease;backdrop-filter:blur(3px)}.drawer-backdrop.open{opacity:1;pointer-events:auto}.drawer{position:fixed;z-index:190;left:12px;top:12px;bottom:12px;width:min(380px,calc(100% - 24px));border-radius:30px;padding:18px;transform:translateX(calc(-100% - 30px));transition:transform .42s cubic-bezier(.22,.8,.2,1);overflow:auto}.drawer.open{transform:translateX(0)}.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.drawer-head .brand{justify-content:flex-start}.drawer-head .brand img{width:48px;height:48px}.drawer-close{width:43px;height:43px;border:1px solid var(--line);background:var(--surface-soft);border-radius:14px}.menu-list{display:grid;gap:6px;margin:18px 0}.menu-link{min-width:0;display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);padding:10px;border-radius:16px;border:1px solid transparent;font-size:.82rem;transition:background .2s ease,border-color .2s ease,transform .2s ease}.menu-link:hover{transform:translateX(2px)}.menu-link:hover,.menu-link.current{background:var(--surface-soft);border-color:var(--line)}.menu-icon{position:relative;flex:0 0 36px;width:36px;height:36px;border-radius:12px;display:grid;place-items:center;background:var(--surface-soft);border:1px solid var(--line);color:var(--accent)}.menu-icon>svg{width:25px;height:25px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}.menu-icon>svg text{fill:currentColor;stroke:none;font-size:7.5px;font-family:inherit;font-weight:850}.menu-icon.crypto>img{position:absolute;width:13px;height:13px;object-fit:contain}.ccc-icon{font-size:.56rem;font-weight:900;letter-spacing:.04em}.menu-preferences{margin-top:8px;padding-top:14px;border-top:1px solid var(--line)}.menu-toggle{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 3px}.menu-toggle strong{font-size:.79rem}.menu-toggle div>span{display:block;margin-top:3px;color:var(--muted);font-size:.66rem;line-height:1.35}
.solar-lunar{position:fixed;inset:0;z-index:145;pointer-events:none;transition:opacity .28s ease,visibility .28s ease}.node{position:absolute;top:44%;width:62px;height:62px;border-radius:50%;border:1px solid var(--line-strong);background:linear-gradient(145deg,var(--surface-strong),var(--surface-soft));color:var(--ink);box-shadow:var(--shadow-soft),inset 0 1px 0 rgba(255,255,255,.3);backdrop-filter:blur(22px) saturate(150%);-webkit-backdrop-filter:blur(22px) saturate(150%);cursor:pointer;pointer-events:auto;display:grid;place-items:center;transition:transform .3s ease,box-shadow .3s ease,background 2s ease,color 2s ease,opacity .3s ease}.node.solar{left:max(8px,env(safe-area-inset-left))}.node.lunar{right:max(8px,env(safe-area-inset-right))}.node svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.node span{position:absolute;top:calc(100% + 6px);font-size:.55rem;letter-spacing:.12em;text-transform:uppercase;font-weight:850;color:var(--muted);opacity:.72}.node:hover{transform:scale(1.06)}.node.is-active{box-shadow:0 0 0 6px color-mix(in srgb,var(--accent) 10%,transparent),0 13px 36px color-mix(in srgb,var(--accent) 23%,transparent);color:var(--accent)}.yinyang-disabled .solar-lunar{opacity:0;visibility:hidden;pointer-events:none}.yinyang-disabled .node{pointer-events:none}
.bottom-dock{position:fixed;z-index:160;left:50%;bottom:max(12px,env(safe-area-inset-bottom));transform:translateX(-50%);height:72px;width:min(360px,calc(100% - 28px));border-radius:999px;display:flex;align-items:center;justify-content:space-between;padding:8px 13px;transition:width .52s cubic-bezier(.22,.8,.2,1),height .52s cubic-bezier(.22,.8,.2,1),border-radius .52s cubic-bezier(.22,.8,.2,1),padding .52s ease,background .38s ease,border-color .38s ease,box-shadow .38s ease,backdrop-filter .38s ease}.dock-btn{width:54px;height:54px;border-radius:50%;border:1px solid var(--line);background:var(--surface-soft);color:var(--ink);transition:opacity .28s ease,transform .44s cubic-bezier(.22,.8,.2,1),width .44s ease}.dock-btn svg{width:25px;height:25px}.crest-btn{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:64px;height:64px;border-radius:50%;padding:0;border:1px solid var(--line-strong);background:radial-gradient(circle,var(--surface-strong),var(--surface-soft));display:grid;place-items:center;cursor:pointer;overflow:hidden;box-shadow:0 10px 28px rgba(0,0,0,.14),inset 0 0 0 1px rgba(255,255,255,.18);transition:width .5s cubic-bezier(.22,.8,.2,1),height .5s cubic-bezier(.22,.8,.2,1),box-shadow .35s ease,transform .2s ease}.crest-btn:active{transform:translate(-50%,-50%) scale(.96)}.crest-btn img{display:block;width:100%;height:100%;object-fit:contain;object-position:center;border-radius:50%;pointer-events:none}.crest-btn img.is-static{padding:7px}.bottom-dock.closed{width:68px;height:68px;border-radius:50%;padding:0;background:transparent!important;border-color:transparent!important;box-shadow:none!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important}.bottom-dock.closed .dock-btn{opacity:0;transform:scale(.15);pointer-events:none;width:0}.bottom-dock.closed .crest-btn{width:68px;height:68px;box-shadow:0 12px 34px rgba(0,0,0,.18),0 0 0 1px color-mix(in srgb,var(--line-strong) 75%,transparent)}.bottom-dock.crest-disabled .crest-btn{cursor:default}
.toast{position:fixed;z-index:300;left:50%;top:18px;transform:translate(-50%,-28px);opacity:0;pointer-events:none;max-width:min(540px,calc(100% - 30px));padding:12px 16px;border-radius:16px;background:rgba(8,13,25,.92);color:#fff;border:1px solid rgba(255,255,255,.14);box-shadow:0 16px 50px rgba(0,0,0,.3);transition:.3s ease;font-size:.8rem}.toast.show{opacity:1;transform:translate(-50%,0)}.offline-banner{display:none;position:fixed;z-index:150;bottom:98px;left:50%;transform:translateX(-50%);padding:7px 11px;border-radius:999px;background:#734b08;color:#fff;font-size:.7rem}.offline .offline-banner{display:block}.section-hidden{display:none!important}
body.theme-shifting .top-header,body.theme-shifting .nav-card,body.theme-shifting .intro,body.theme-shifting .side-card,body.theme-shifting .measurement-card,body.theme-shifting .key,body.theme-shifting .screen{transition-duration:2.4s}
body.theme-shifting .app-bg:after{animation:glassSweep 2.55s ease both}@keyframes glassSweep{0%{transform:translateX(-20%);opacity:.3}50%{transform:translateX(20%);opacity:.9}100%{transform:translateX(0);opacity:.3}}
@media(max-width:1040px){.solar-lunar .node{width:56px;height:56px}.solar-lunar .node span{display:none}.smart-layout{grid-template-columns:1fr}.smart-side{grid-template-columns:repeat(2,minmax(0,1fr))}.keypad.scientific{grid-template-columns:repeat(5,minmax(0,1fr))}}
@media(max-width:760px){.shell,main{width:min(100% - 20px,1180px)}.shell{padding-top:10px}main{padding-top:12px}.top-header{top:7px;min-height:66px;border-radius:23px;grid-template-columns:48px 1fr 48px;padding:8px 10px}.header-menu{width:44px;height:44px}.brand img{width:44px;height:44px}.brand p{display:none}.page-nav{gap:6px}.nav-card{min-height:82px;padding:8px;justify-content:center;gap:6px;flex-direction:column;text-align:center;border-radius:18px}.nav-icon{width:39px;height:39px;flex-basis:39px;border-radius:13px}.nav-icon>svg{width:28px;height:28px}.nav-icon.crypto>svg{width:30px;height:30px}.nav-icon.crypto>img{width:15px;height:15px}.nav-copy strong{font-size:.68rem}.nav-copy span{display:none}.intro,.compact-intro{padding:22px 18px}.intro h2{font-size:clamp(2rem,10vw,3rem)}.content-grid{gap:10px}.calc-shell{padding:15px;border-radius:28px}.keypad.scientific{grid-template-columns:repeat(4,minmax(0,1fr))}.key{min-height:51px;border-radius:14px;font-size:.76rem}.smart-side{grid-template-columns:1fr}.form-grid.converter-grid,.crypto-selector-grid{grid-template-columns:minmax(0,1fr) 42px minmax(0,1fr)}.swap{width:42px;height:46px}.purchase-card{grid-template-columns:1fr}.purchase-result{text-align:left}.solar-lunar .node{width:48px;height:48px;top:49%}.node svg{width:22px;height:22px}.ccc-table{grid-template-columns:repeat(3,minmax(0,1fr))}.contact-grid{grid-template-columns:1fr}.contact-grid .field[style*="grid-column"]{grid-column:auto!important}}
@media(max-width:500px){body{padding-bottom:108px}.top-header .brand h1{font-size:.85rem}.page-nav{gap:5px}.nav-card{min-height:73px;padding:7px 4px}.nav-icon{width:35px;height:35px;flex-basis:35px}.nav-icon>svg{width:25px;height:25px}.nav-copy strong{font-size:.61rem}.calc-shell{padding:12px}.device-status{font-size:.64rem}.screen{padding:14px;min-height:108px}.calc-mode-switch{gap:5px}.calc-mode-switch .pill{padding:9px 5px;font-size:.68rem}.premium-mode:after{display:none}.keypad{gap:6px}.keypad.scientific{gap:5px}.key{min-height:48px}.voice-persona-inner{gap:6px}.voice-card{padding:10px 6px}.voice-avatar{width:40px;height:40px}.voice-copy small{font-size:.57rem}.equation{grid-template-columns:minmax(0,1fr) 20px minmax(0,1fr);gap:5px}.equation .measurement-card{padding:8px}.unit-side input,.unit-side select{font-size:.68rem;min-height:44px;padding:0 6px}.metric{font-size:1.02rem;min-height:44px!important}.equals-glyph{font-size:1rem}.measure-footer{grid-template-columns:1fr}.swap-pill{justify-content:center}.equation-readout{text-align:center}.form-grid.converter-grid,.crypto-selector-grid{grid-template-columns:1fr}.converter-grid .swap{justify-self:center;transform:rotate(90deg)}.crypto-selector-grid .asset-divider{display:none}.ccc-table{grid-template-columns:repeat(2,minmax(0,1fr))}.solar-lunar .node{width:44px;height:44px;top:51%}.node.solar{left:5px}.node.lunar{right:5px}.bottom-dock{bottom:max(8px,env(safe-area-inset-bottom));height:68px}.crest-btn{width:58px;height:58px}.dock-btn{width:50px;height:50px}.bottom-dock.closed{width:64px;height:64px}.bottom-dock.closed .crest-btn{width:64px;height:64px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.nav-card,.glass,.node,.bottom-dock,.voice-persona-panel{transition-duration:.01ms!important}}

@media(max-width:380px){.equation{grid-template-columns:minmax(0,1fr) 16px minmax(0,1fr);gap:4px}.equation .measurement-card{padding:7px}.unit-side input,.unit-side select{font-size:.62rem;padding-left:4px;padding-right:4px}.metric{font-size:.92rem}.measure-shell{padding-left:9px;padding-right:9px}.page-nav{gap:4px}.nav-card{padding-left:3px;padding-right:3px}.nav-copy strong{font-size:.57rem}}
/* Phase 2 visual refinement */
.calc-shell[data-calculator="smart"]{--calc-accent:#6d78ff;--calc-glow:rgba(109,120,255,.22)}
.calc-shell[data-calculator="currency"]{--calc-accent:#20a979;--calc-glow:rgba(32,169,121,.20)}
.calc-shell[data-calculator="crypto"]{--calc-accent:#d89928;--calc-glow:rgba(216,153,40,.20)}
.calc-shell[data-calculator="measurements"]{--calc-accent:#358ed8;--calc-glow:rgba(53,142,216,.20)}
.calc-shell[data-calculator]{border-color:color-mix(in srgb,var(--calc-accent,var(--accent)) 18%,var(--line-strong));box-shadow:0 28px 78px rgba(22,42,72,.14),inset 0 1px 0 rgba(255,255,255,.28)}
html[data-theme="night"] .calc-shell[data-calculator]{box-shadow:0 34px 92px rgba(0,0,0,.42),inset 0 1px 0 rgba(255,255,255,.08)}
.calc-shell[data-calculator] .device-status .center{color:color-mix(in srgb,var(--calc-accent,var(--accent)) 78%,var(--ink));letter-spacing:.09em}
.calc-shell[data-calculator] .big-result,.calc-shell[data-calculator] .measurement-card{box-shadow:inset 0 1px 0 rgba(255,255,255,.11)}
.calc-shell[data-calculator] .primary-pill{background:linear-gradient(135deg,color-mix(in srgb,var(--calc-accent,var(--accent)) 90%,#fff 10%),color-mix(in srgb,var(--calc-accent,var(--accent)) 76%,#0c2541 24%));box-shadow:0 10px 24px var(--calc-glow,rgba(74,111,242,.2))}
.nav-card.active:after{content:"";position:absolute;left:18%;right:18%;bottom:0;height:2px;border-radius:999px;background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:.86}
.key,.pill,.swap,.install-btn,.voice-card,.menu-link,.dock-btn,.node{user-select:none;-webkit-user-select:none}
.key:active,.pill:active,.swap:active,.install-btn:active{transform:translateY(1px) scale(.985)}
.premium-card{border-color:color-mix(in srgb,var(--accent) 20%,var(--line-strong))}.premium-card .premium-module{border-radius:14px;padding:11px 9px;margin:4px -2px;border-top:0;border:1px solid var(--line);background:linear-gradient(135deg,var(--surface-soft),transparent)}.premium-card .premium-module+.premium-module{margin-top:8px}.install-btn{background:linear-gradient(145deg,var(--surface-strong),var(--surface-soft))}.locked{position:relative}.locked:after{content:"";width:7px;height:7px;border:1.6px solid currentColor;border-radius:2px;display:inline-block;margin-left:6px;box-shadow:0 -4px 0 -2px currentColor}
.node{isolation:isolate}.node:before{content:"";position:absolute;inset:5px;border-radius:50%;border:1px solid color-mix(in srgb,currentColor 18%,transparent);opacity:.75}.node.is-active:after{content:"";position:absolute;inset:-7px;border:1px solid color-mix(in srgb,var(--accent) 24%,transparent);border-radius:50%;animation:nodePulse 2.4s ease-in-out infinite;z-index:-1}@keyframes nodePulse{0%,100%{transform:scale(.94);opacity:.32}50%{transform:scale(1.08);opacity:.78}}
.crest-btn:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 42%,transparent);outline-offset:4px}
.bottom-dock.closed .crest-btn{background:var(--surface-soft)}
.bottom-dock.closed .crest-btn img{width:100%;height:100%}
.measure-shell .field select{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}
.measure-shell .unit-side,.measure-shell .field,.measure-shell .equation{max-width:100%}
@media(max-width:500px){.page-nav{grid-template-columns:repeat(4,minmax(0,1fr))}.nav-card{overflow:hidden}.nav-copy{width:100%}.nav-copy strong{overflow:hidden;text-overflow:ellipsis}.measure-shell .panel-title h3{font-size:.9rem}.measure-shell .panel-copy{font-size:.68rem}.measure-shell .category-field{margin-top:10px}}
body.theme-shifting{cursor:progress}
body.theme-shifting *{pointer-events:none!important}
body.theme-shifting:before{content:"";position:fixed;inset:0;z-index:1000;background:transparent;pointer-events:auto}