:root,[data-theme=light]{--ink:#0c1222;--muted:#64748b;--paper:#f8fafc;--surface:hsla(0,0%,100%,.78);--surface-solid:#fff;--bg-2:#f1f5f9;--line:rgba(15,23,42,.08);--line-strong:rgba(15,23,42,.12);--accent:#0d9488;--accent-2:#0f766e;--accent-soft:rgba(13,148,136,.12);--accent-glow:rgba(13,148,136,.28);--warn:#ea580c;--ok:#0d9488;--radius:18px;--radius-lg:24px;--radius-xl:28px;--shadow:0 1px 2px rgba(15,23,42,.04),0 8px 24px rgba(15,23,42,.06);--shadow-lg:0 4px 12px rgba(15,23,42,.06),0 24px 48px rgba(15,23,42,.1);--shadow-glow:0 0 0 1px var(--accent-soft),0 8px 32px var(--accent-glow);--font:"Sora",system-ui,-apple-system,sans-serif;--mono:"IBM Plex Mono",ui-monospace,monospace;--header-h:68px;--glass-blur:20px}[data-theme=dark]{--ink:#f1f5f9;--muted:#94a3b8;--paper:#05080f;--surface:rgba(15,23,42,.72);--surface-solid:#0f172a;--bg-2:#111827;--line:rgba(148,163,184,.12);--line-strong:rgba(148,163,184,.18);--accent:#2dd4bf;--accent-2:#5eead4;--accent-soft:rgba(45,212,191,.14);--accent-glow:rgba(45,212,191,.22);--warn:#fb923c;--ok:#2dd4bf;--shadow:0 1px 2px rgba(0,0,0,.3),0 8px 28px rgba(0,0,0,.45);--shadow-lg:0 8px 24px rgba(0,0,0,.4),0 32px 64px rgba(0,0,0,.55);--shadow-glow:0 0 0 1px var(--accent-soft),0 12px 40px var(--accent-glow)}*,:after,:before{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;font-family:var(--font);font-size:15px;line-height:1.6;color:var(--ink);background:var(--paper);background-image:radial-gradient(ellipse 90% 55% at 50% -15%,var(--accent-glow),transparent 55%),radial-gradient(ellipse 50% 40% at 100% 0,rgba(99,102,241,.08),transparent 50%),radial-gradient(ellipse 40% 30% at 0 80%,rgba(13,148,136,.06),transparent 45%);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}[data-theme=dark] body{background-image:radial-gradient(ellipse 100% 60% at 50% -12%,rgba(45,212,191,.14),transparent 50%),radial-gradient(ellipse 50% 40% at 95% 10%,rgba(99,102,241,.1),transparent 45%),radial-gradient(ellipse 40% 35% at 5% 90%,rgba(45,212,191,.06),transparent 40%)}a{color:var(--accent-2);text-decoration:none;transition:color .15s ease}a:hover{color:var(--accent)}.wrap{width:min(1140px,calc(100% - 36px));margin-inline:auto}header{position:-webkit-sticky;position:sticky;top:0;z-index:50;height:var(--header-h);backdrop-filter:blur(var(--glass-blur)) saturate(1.4);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(1.4);background:color-mix(in srgb,var(--paper) 72%,transparent);border-bottom:1px solid var(--line);box-shadow:0 1px 0 color-mix(in srgb,var(--surface-solid) 40%,transparent)}.nav,header{display:flex;align-items:center}.nav{gap:16px;width:min(1120px,calc(100% - 32px));margin-inline:auto}.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:1.12rem;color:var(--ink);text-decoration:none!important;letter-spacing:-.03em}.brand .logo{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(145deg,var(--accent) 0,var(--accent-2) 100%);color:#fff;font-size:1.05rem;box-shadow:0 4px 16px var(--accent-glow),inset 0 1px 0 hsla(0,0%,100%,.25);transition:transform .2s ease,box-shadow .2s ease}.brand:hover .logo{transform:scale(1.05) rotate(-3deg);box-shadow:0 6px 20px var(--accent-glow)}.nav-links{display:flex;gap:4px;flex:1 1;flex-wrap:wrap}.nav-links a{color:var(--muted);font-size:13px;font-weight:550;padding:8px 13px;border-radius:11px;text-decoration:none!important;transition:background .18s ease,color .18s ease}.nav-links a:hover{background:var(--accent-soft);color:var(--accent-2)}@media (max-width:800px){.nav-links{display:none}}.btn-action,button{font-family:inherit;font-size:13px;font-weight:600;border-radius:12px;border:1px solid var(--line-strong);background:var(--surface-solid);color:var(--ink);padding:10px 16px;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease,border-color .15s ease}button:hover{transform:translateY(-1.5px);box-shadow:var(--shadow)}button:active{transform:translateY(0)}.btn-action.ghost,button.ghost{background:transparent;color:var(--muted);border-color:transparent}.btn-action.ghost:hover,button.ghost:hover{background:var(--accent-soft);color:var(--accent-2);border-color:transparent}.hero{padding:56px 0 32px;text-align:center}.hero .kicker{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:650;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-2);background:var(--accent-soft);padding:7px 16px;border-radius:999px;margin-bottom:18px;border:1px solid color-mix(in srgb,var(--accent) 18%,transparent)}.hero h1{font-size:clamp(1.95rem,4.8vw,2.9rem);font-weight:700;letter-spacing:-.035em;line-height:1.12;margin:0 0 16px;color:var(--ink);background:linear-gradient(135deg,var(--ink) 40%,var(--accent-2));-webkit-background-clip:text;background-clip:text}@supports ((-webkit-background-clip:text) or (background-clip:text)) or (-webkit-background-clip:text){.hero h1{color:transparent}}.hero .sub{max-width:520px;margin:0 auto 28px;color:var(--muted);font-size:1.08rem;line-height:1.55}.hero .search{max-width:460px;margin:0 auto;position:relative}.hero .search input{width:100%;padding:15px 20px;border-radius:16px;border:1px solid var(--line-strong);background:var(--surface-solid);color:var(--ink);font:inherit;box-shadow:var(--shadow);transition:border-color .2s ease,box-shadow .2s ease}.hero .search input:focus{outline:none;border-color:var(--accent);box-shadow:var(--shadow-glow)}.section-title{font-size:.72rem;font-weight:650;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:32px 0 16px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(248px,1fr));grid-gap:16px;gap:16px;padding-bottom:56px}.card{display:block;padding:20px;border-radius:var(--radius);background:var(--surface);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--line);box-shadow:var(--shadow);color:inherit;text-decoration:none!important;transition:transform .22s cubic-bezier(.22,1,.36,1),box-shadow .22s ease,border-color .22s ease,background .22s ease;position:relative;overflow:hidden}.card:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,var(--accent-soft),transparent 60%);opacity:0;transition:opacity .25s ease;pointer-events:none}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:color-mix(in srgb,var(--accent) 35%,var(--line))}.card:hover:before{opacity:1}.card .icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(145deg,var(--accent-soft),color-mix(in srgb,var(--accent) 8%,var(--bg-2)));font-size:1.25rem;margin-bottom:14px;border:1px solid color-mix(in srgb,var(--accent) 15%,transparent)}.card .icon,.card h3{position:relative;z-index:1}.card h3{margin:0 0 6px;font-size:1.02rem;font-weight:650;letter-spacing:-.015em}.card p{margin:0 0 14px;font-size:13px;color:var(--muted);line-height:1.5}.card .tag,.card p{position:relative;z-index:1}.card .tag{font-size:11px;font-weight:650;color:var(--accent-2);background:var(--accent-soft);padding:5px 11px;border-radius:999px;border:1px solid color-mix(in srgb,var(--accent) 12%,transparent)}.tool-page{padding:32px 0 64px}.tool-head{margin-bottom:24px}.tool-head h1{margin:0 0 8px;font-size:clamp(1.55rem,3.2vw,2rem);font-weight:700;letter-spacing:-.025em}.tool-head p{margin:0;color:var(--muted);max-width:560px;font-size:.98rem}.calc-shell{display:grid;grid-template-columns:1.12fr .88fr;grid-gap:24px;gap:24px;margin-top:10px}@media (max-width:900px){.calc-shell{grid-template-columns:1fr}}.panel{background:var(--surface);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow)}.panel h2{margin:0 0 16px;font-size:.95rem;font-weight:650;letter-spacing:-.01em}.panel h3{margin:0 0 10px;font-size:.9rem}.panel.result{background:transparent;border:none;box-shadow:none;padding:0;-webkit-backdrop-filter:none;backdrop-filter:none}label{display:block;font-size:12px;font-weight:600;color:var(--muted);margin:14px 0 7px;letter-spacing:.01em}input,select,textarea{width:100%;font:inherit;color:var(--ink);background:var(--surface-solid);border:1px solid var(--line-strong);border-radius:13px;padding:12px 15px;margin-bottom:4px;transition:border-color .18s ease,box-shadow .18s ease}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.row{grid-template-columns:1fr 1fr;grid-gap:12px;gap:12px}.list,.row{display:grid}.list{grid-gap:8px;gap:8px;margin-top:12px}.list>div{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding:8px 0;border-bottom:1px solid var(--line)}.list>div:last-child{border-bottom:0}.list span{color:var(--muted)}.list b{font-weight:600}.big,.list b{font-family:var(--mono)}.big{font-size:1.75rem;font-weight:700}.meta{font-size:13px;color:var(--muted)}.slider-field{margin-bottom:18px}.slider-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px}.slider-top label{margin:0}.slider-value-box{display:flex;align-items:center;gap:6px;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:4px 10px}.slider-value-box input{width:90px;margin:0;border:0;background:transparent;padding:6px 0;text-align:right;font-weight:600;color:var(--accent-2);font-family:var(--mono)}.slider-unit{font-size:12px;color:var(--muted)}.slider-range{width:100%;height:8px;border-radius:999px;-moz-appearance:none;appearance:none;-webkit-appearance:none;background:linear-gradient(90deg,var(--accent-soft),var(--bg-2));outline:none;cursor:pointer}.slider-range::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:linear-gradient(145deg,var(--accent),var(--accent-2));cursor:pointer;border:3px solid var(--surface-solid);box-shadow:0 2px 10px var(--accent-glow),0 0 0 1px color-mix(in srgb,var(--accent) 30%,transparent);-webkit-transition:transform .15s ease,box-shadow .15s ease;transition:transform .15s ease,box-shadow .15s ease}.slider-range::-webkit-slider-thumb:hover{transform:scale(1.08);box-shadow:0 4px 14px var(--accent-glow)}.slider-range::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:linear-gradient(145deg,var(--accent),var(--accent-2));cursor:pointer;border:3px solid var(--surface-solid);box-shadow:0 2px 10px var(--accent-glow)}.slider-minmax{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin-top:4px}.chart-wrap{display:flex;flex-direction:column;align-items:center;gap:12px}.area-svg,.donut-svg{width:100%;max-width:200px;height:auto}.area-svg{max-width:320px}.donut-center-val{font-size:11px;font-weight:700;fill:var(--ink)}.donut-center-label{font-size:8px;fill:var(--muted)}.chart-legend{width:100%;display:grid;grid-gap:6px;gap:6px}.legend-row{display:flex;align-items:center;gap:8px;font-size:13px}.legend-row b{margin-left:auto;font-family:var(--mono)}.legend-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.chart-title{font-size:12px;margin-bottom:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.gauge-bar{height:10px;border-radius:8px;background:var(--bg-2);overflow:hidden;margin-top:10px}.gauge-fill{height:100%;border-radius:8px;transition:width .25s ease,background .25s ease}.result-actions{display:flex;gap:8px;margin-top:4px;flex-wrap:wrap;width:100%;align-items:center}.btn-action{flex:1 1;min-width:88px;border-radius:12px;padding:11px 12px;border:1px solid hsla(0,0%,100%,.12);background:hsla(0,0%,100%,.06);color:#e8f5f0;font-weight:600;font-size:12.5px;letter-spacing:.01em;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}.btn-action:hover{transform:translateY(-1px);background:hsla(0,0%,100%,.1)}[data-theme=light] .btn-action{background:var(--bg-2);color:var(--ink);border-color:var(--line-strong)}[data-theme=light] .btn-action:hover{background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 30%,var(--line))}.btn-action.ghost{background:transparent;flex:0.7 1;min-width:64px}.btn-action--primary,.btn-action.btn-action--primary{background:linear-gradient(180deg,var(--accent),var(--accent-2));border-color:transparent;color:#fff;box-shadow:0 6px 20px var(--accent-glow)}.btn-action--primary:hover{box-shadow:0 8px 24px var(--accent-glow);background:linear-gradient(180deg,var(--accent-2),var(--accent))}[data-theme=light] .btn-action--primary{color:#fff}.action-msg{font-size:12px;color:var(--accent);width:100%;font-weight:550}.fx-card{position:relative;border-radius:22px;padding:1px;background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 55%,transparent),rgba(30,40,36,.15) 40%,color-mix(in srgb,var(--accent) 25%,transparent));box-shadow:var(--shadow-lg),0 0 40px var(--accent-glow)}.fx-card--orange{background:linear-gradient(145deg,rgba(251,146,60,.45),rgba(40,30,20,.15) 40%,rgba(251,146,60,.2))}.fx-card__glow{pointer-events:none;position:absolute;inset:-15%;background:radial-gradient(circle at 50% 0,var(--accent-glow),transparent 55%);z-index:0}.fx-card__inner{position:relative;z-index:1;border-radius:21px;padding:22px 20px 18px;background:linear-gradient(165deg,#141c19,#0c100e);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);color:#f0f7f4}[data-theme=light] .fx-card__inner{background:linear-gradient(165deg,#fff,#f0f5f3);color:var(--ink)}.fx-card__head{display:flex;align-items:center;gap:10px;margin-bottom:16px}.fx-card__badge{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-weight:700;background:linear-gradient(145deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 4px 14px var(--accent-glow)}.fx-card__title{font-size:14px;font-weight:600}.fx-card__hero{text-align:center;padding:20px 12px;border-radius:16px;background:linear-gradient(180deg,color-mix(in srgb,var(--accent) 14%,transparent),rgba(0,0,0,.12));border:1px solid color-mix(in srgb,var(--accent) 25%,transparent);margin-bottom:16px}[data-theme=light] .fx-card__hero{background:color-mix(in srgb,var(--accent) 8%,#fff);border-color:color-mix(in srgb,var(--accent) 18%,transparent)}.fx-card__hero-label{font-size:11px;text-transform:uppercase;letter-spacing:.12em;opacity:.7;margin-bottom:8px}.fx-card__hero-value{font-family:var(--mono);font-size:clamp(1.7rem,4vw,2.25rem);font-weight:700;letter-spacing:-.02em;line-height:1.15;color:#fff}[data-theme=light] .fx-card__hero-value{color:var(--ink)}.fx-card__meta{margin-top:10px;font-size:12px;opacity:.65;line-height:1.45}.fx-card__breakdown-label{font-size:11px;text-transform:uppercase;letter-spacing:.1em;opacity:.55;margin-bottom:10px}.fx-card__grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:10px;gap:10px}@media (max-width:520px){.fx-card__grid{grid-template-columns:1fr}}.fx-card__stat{border-radius:12px;padding:12px 10px;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.06)}[data-theme=light] .fx-card__stat{background:var(--bg-2);border-color:var(--line)}.fx-card__stat-label{font-size:11px;opacity:.65;margin-bottom:6px}.fx-card__stat-value{font-family:var(--mono);font-size:14px;font-weight:600}.fx-card__actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;padding-top:16px;border-top:1px solid hsla(0,0%,100%,.08)}[data-theme=light] .fx-card__actions{border-top-color:var(--line)}.ad-label{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:6px;text-align:center}.ad-desktop{display:none}.ad-mobile{display:block}@media (min-width:768px){.ad-desktop{display:block}.ad-mobile{display:none}}.ad-slot-fixed{min-height:60px}.search-trigger{font-size:13px;padding:8px 12px;white-space:nowrap}.search-overlay{position:fixed;inset:0;z-index:100;background:rgba(10,14,12,.55);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:flex-start;justify-content:center;padding-top:12vh}.search-modal{width:min(520px,calc(100% - 24px));background:var(--surface);border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow-lg);overflow:hidden}.search-modal input{width:100%;border:0;border-bottom:1px solid var(--line);padding:16px 18px;margin:0;border-radius:0;background:transparent}.search-results{max-height:360px;overflow:auto;padding:8px}.search-item{width:100%;display:flex;gap:12px;align-items:center;text-align:left;background:transparent;color:var(--ink);border:0;border-radius:12px;padding:10px 12px;cursor:pointer}.search-item .icon,.search-item:hover{background:var(--bg-2)}.search-item .icon{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;flex-shrink:0}.search-item strong{display:block;font-size:14px}.search-item small{color:var(--muted);font-size:12px}footer{border-top:1px solid var(--line);padding:24px 0;margin-top:auto;background:color-mix(in srgb,var(--surface-solid) 50%,transparent)}.foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px}.foot,.foot a{color:var(--muted)}.foot a{transition:color .15s ease}.foot a:hover{color:var(--accent-2)}.history-bar{position:-webkit-sticky;position:sticky;bottom:0;z-index:30;background:color-mix(in srgb,var(--paper) 78%,transparent);backdrop-filter:blur(16px) saturate(1.3);-webkit-backdrop-filter:blur(16px) saturate(1.3);border-top:1px solid var(--line);padding:11px 0}.history-inner{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.history-items{display:flex;gap:8px;flex-wrap:wrap;flex:1 1}.history-chip{font-size:12px;padding:6px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--line);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink);text-decoration:none!important}.history-chip:hover{border-color:var(--accent)}.seo-prose h2{font-size:1.1rem;margin:1.25rem 0 .5rem;color:var(--ink)}.seo-prose p{color:var(--muted);line-height:1.7;margin-bottom:.75rem}.seo-prose a{color:var(--accent-2)}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:13px}td,th{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line)}th{color:var(--muted);font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:.04em}.screen{font-family:var(--mono);font-size:1.5rem;text-align:right;padding:16px;background:var(--paper);border-radius:12px;margin-bottom:12px;border:1px solid var(--line);min-height:56px}.calc-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:8px;gap:8px}.calc-grid button{padding:14px;font-size:1rem}.calc-grid button.op{color:var(--accent-2)}.calc-grid button.eq{background:linear-gradient(180deg,var(--accent),var(--accent-2));color:#fff;border:none}.theme-toggle{font-size:13px;padding:8px 12px}.device-stage{display:flex;justify-content:center;padding:12px 0 32px}.calc-device{width:min(360px,100%);border-radius:28px;padding:3px;background:linear-gradient(145deg,hsla(0,0%,100%,.35),rgba(80,90,85,.4) 40%,rgba(20,25,22,.8));box-shadow:0 30px 60px rgba(0,0,0,.35),0 0 0 1px hsla(0,0%,100%,.08),inset 0 1px 0 hsla(0,0%,100%,.25)}.calc-device__bezel{border-radius:26px;padding:18px 16px 20px;background:linear-gradient(180deg,#1a1f1d,#0d100f);border:1px solid hsla(0,0%,100%,.06)}[data-theme=light] .calc-device__bezel{background:linear-gradient(180deg,#2a302e,#1a1e1c)}.calc-device__brand{font-size:11px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:hsla(0,0%,100%,.35);text-align:center;margin-bottom:12px}.calc-device__screen{position:relative;border-radius:14px;padding:18px 16px;min-height:72px;margin-bottom:16px;background:linear-gradient(180deg,#0a1a14,#06120e);border:1px solid rgba(45,212,191,.2);box-shadow:inset 0 2px 12px rgba(0,0,0,.5),0 0 20px rgba(45,212,191,.08);overflow:hidden}.calc-device__screen-glow{position:absolute;inset:0;background:radial-gradient(ellipse at 80% 0,rgba(45,212,191,.12),transparent 55%);pointer-events:none}.calc-device__expr{position:relative;display:block;text-align:right;font-family:var(--mono),monospace;font-size:clamp(1.4rem,5vw,1.85rem);font-weight:600;color:#5eead4;letter-spacing:.04em;word-break:break-all;text-shadow:0 0 12px rgba(45,212,191,.35)}.calc-device__pad{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:10px;gap:10px}.crystal-key{position:relative;height:52px;border:none;border-radius:14px;cursor:pointer;font-family:inherit;font-size:1.15rem;font-weight:600;color:#f0f7f4;overflow:hidden;transform:translateY(0);transition:transform .08s ease,box-shadow .08s ease,filter .08s;box-shadow:0 4px 0 rgba(0,0,0,.35),0 6px 16px rgba(0,0,0,.25),inset 0 1px 0 hsla(0,0%,100%,.35)}.crystal-key:before{content:"";position:absolute;inset:0;border-radius:inherit;background:linear-gradient(160deg,hsla(0,0%,100%,.45),hsla(0,0%,100%,.08) 35%,transparent 55%);pointer-events:none}.crystal-key:active{transform:translateY(3px);box-shadow:0 1px 0 rgba(0,0,0,.3),0 2px 6px rgba(0,0,0,.2),inset 0 1px 0 hsla(0,0%,100%,.2)}.crystal-key__label{position:relative;z-index:1}.crystal-key--num{background:linear-gradient(180deg,#3a4540,#252c29)}.crystal-key--op{background:linear-gradient(180deg,#2a5c52,#1a3d36);color:#5eead4}.crystal-key--fn{background:linear-gradient(180deg,#4a4038,#2e2822);color:#fdba74;font-size:1rem}.crystal-key--eq{background:linear-gradient(180deg,#2dd4bf,#0d9488);color:#042f2e;font-weight:700;box-shadow:0 4px 0 #0f766e,0 8px 20px rgba(45,212,191,.35),inset 0 1px 0 hsla(0,0%,100%,.45)}.crystal-key--eq:active{box-shadow:0 1px 0 #0f766e,0 2px 8px rgba(45,212,191,.25),inset 0 1px 0 hsla(0,0%,100%,.3)}.mode-switch{display:flex;justify-content:center;gap:8px;margin-bottom:20px}.mode-btn{padding:10px 20px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--muted);font-weight:600}.mode-btn.active{background:linear-gradient(180deg,var(--accent),var(--accent-2));color:#fff;border-color:transparent;box-shadow:0 4px 16px var(--accent-glow)}.device-stage{transition:opacity .22s ease,transform .22s ease}.device-stage--flip{opacity:0;transform:scale(.94) rotateX(6deg)}.casio-device{width:min(380px,100%);margin:0 auto}.casio-body{border-radius:22px 22px 28px 28px;padding:14px 12px 16px;background:linear-gradient(180deg,#2c3236,#1a1e22 40%,#121518);box-shadow:0 24px 48px rgba(0,0,0,.4),inset 0 1px 0 hsla(0,0%,100%,.12);border:1px solid hsla(0,0%,100%,.06)}.casio-top{display:flex;justify-content:space-between;align-items:flex-start;padding:4px 6px 10px}.casio-logo strong{display:block;font-size:15px;letter-spacing:.04em;color:#e8eaed}.casio-logo span{display:block;font-size:11px;color:#9aa0a6;margin-top:2px}.casio-logo em{display:block;font-size:9px;font-style:normal;color:#5f9ea0;margin-top:2px;letter-spacing:.02em}.casio-solar{width:88px;height:28px;border-radius:4px;background:linear-gradient(180deg,#1a1510,#0d0a08);border:1px solid #3a3530;box-shadow:inset 0 2px 6px rgba(0,0,0,.6)}.casio-lcd{margin:0 4px 12px;border-radius:8px;padding:8px 10px 12px;background:#c5d5c0;border:3px solid #1e2428;box-shadow:inset 0 2px 8px rgba(0,0,0,.15);min-height:72px}.casio-lcd-row.indicators{display:flex;gap:10px;font-size:10px;font-weight:700;color:#334;min-height:14px}.casio-lcd-main{font-family:var(--mono),monospace;font-size:1.25rem;font-weight:600;color:#1a1f1c;text-align:right;word-break:break-all;margin-top:6px}.casio-pad{display:flex;flex-direction:column;gap:6px;padding:0 2px}.casio-row{display:grid;grid-template-columns:repeat(5,1fr);grid-gap:5px;gap:5px}.casio-key{height:36px;border:none;border-radius:6px;font-size:11px;font-weight:650;font-family:inherit;cursor:pointer;color:#e8eaed;background:linear-gradient(180deg,#3d444c,#2a3036);box-shadow:0 2px 0 #15181c,inset 0 1px 0 hsla(0,0%,100%,.12);transition:transform .06s}.casio-key:active{transform:translateY(2px);box-shadow:0 0 0 #15181c}.casio-key--green{background:linear-gradient(180deg,#7dce6a,#3d9b4a);color:#0a1a0c;box-shadow:0 2px 0 #2a6b32,inset 0 1px 0 hsla(0,0%,100%,.35)}.casio-key--fn{background:linear-gradient(180deg,#4a5560,#323a42);font-size:9px}.casio-key--op{background:linear-gradient(180deg,#5a6570,#3a424a)}.casio-key--shift-on{outline:2px solid #f0b429;outline-offset:1px}.casio-row:nth-child(n+5) .casio-key{height:40px;font-size:14px;border-radius:8px;background:linear-gradient(180deg,#c5c9ce,#9aa0a8);color:#1a1e22;box-shadow:0 2px 0 #5a6068,inset 0 1px 0 hsla(0,0%,100%,.5)}.casio-row:nth-child(n+5) .casio-key--green{background:linear-gradient(180deg,#7dce6a,#3d9b4a);color:#0a1a0c}.casio-row:nth-child(n+5) .casio-key--op{background:linear-gradient(180deg,#b0b6be,#7a828c)}.casio-note{margin:12px 6px 0;font-size:11px;line-height:1.45;color:hsla(0,0%,100%,.4)}.mod-calc{width:min(400px,100%);margin:0 auto;border-radius:24px;padding:16px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-lg)}.mod-calc--sci{width:min(440px,100%)}.mod-calc__screen{border-radius:16px;padding:14px 16px;margin-bottom:14px;background:linear-gradient(180deg,#0f1714,#0a100e);border:1px solid color-mix(in srgb,var(--accent) 30%,transparent);min-height:88px;display:flex;flex-direction:column;justify-content:flex-end;gap:8px}[data-theme=light] .mod-calc__screen{background:linear-gradient(180deg,#e8f5f1,#dceee8)}.mod-calc__hint{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--accent);opacity:.8}.mod-calc__status{display:flex;flex-wrap:wrap;gap:6px}.pill{font-size:10px;font-weight:700;letter-spacing:.06em;padding:3px 8px;border-radius:999px;background:color-mix(in srgb,var(--accent) 25%,transparent);color:var(--accent)}.pill--dim{background:hsla(0,0%,100%,.08);color:hsla(0,0%,100%,.55)}[data-theme=light] .pill--dim{background:rgba(0,0,0,.06);color:var(--muted)}.mod-calc__value{font-family:var(--mono),monospace;font-size:clamp(1.35rem,4vw,1.75rem);font-weight:650;text-align:right;color:#5eead4;word-break:break-all;line-height:1.25}[data-theme=light] .mod-calc__value{color:#0f766e}.mod-calc__grid{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:10px;gap:10px}.mod-sci-pad{display:flex;flex-direction:column;gap:8px}.mod-sci-row{display:grid;grid-template-columns:repeat(5,1fr);grid-gap:8px;gap:8px}.mod-key{height:50px;border:none;border-radius:14px;font-family:inherit;font-size:1.1rem;font-weight:650;cursor:pointer;color:var(--ink);background:var(--bg-2);border:1px solid var(--line);transition:transform .08s,background .12s,box-shadow .12s;box-shadow:0 2px 0 color-mix(in srgb,var(--ink) 12%,transparent)}.mod-key:active{transform:translateY(2px);box-shadow:none}.mod-key--sm{height:42px;font-size:.78rem;border-radius:12px}.mod-key--op{color:var(--accent-2);background:color-mix(in srgb,var(--accent) 12%,var(--bg-2))}.mod-key--fn{color:#7dd3fc;background:color-mix(in srgb,#0ea5e9 12%,var(--bg-2));font-size:.72rem}[data-theme=light] .mod-key--fn{color:#0369a1}.mod-key--muted{color:var(--warn)}.mod-key--eq{background:linear-gradient(180deg,var(--accent),var(--accent-2));color:#fff;border:none;box-shadow:0 4px 14px var(--accent-glow)}.info-card{margin-top:20px;max-width:640px;margin-left:auto;margin-right:auto}.info-card h2{margin:0 0 10px;font-size:1.05rem}.info-card p,.info-list{color:var(--muted);line-height:1.65}.info-list{margin:12px 0;padding-left:1.15rem}.info-list li{margin-bottom:8px}.info-list.numbered{list-style:decimal}.info-card code{font-family:var(--mono);font-size:.9em;background:var(--bg-2);padding:2px 6px;border-radius:6px}.crystal-stage{display:flex;justify-content:center;padding:8px 0 28px}.crystal-phone{width:min(340px,100%);border-radius:36px;padding:14px;background:linear-gradient(160deg,#1e293b,#0f172a 50%,#020617);box-shadow:0 40px 80px rgba(0,0,0,.35),0 0 0 1px hsla(0,0%,100%,.08)}.crystal-phone-inner{border-radius:28px;padding:18px 14px 16px;background:linear-gradient(180deg,rgba(30,41,59,.95),rgba(15,23,42,.98));border:1px solid hsla(0,0%,100%,.06)}.crystal-oled{position:relative;border-radius:18px;padding:20px 18px 16px;min-height:110px;margin-bottom:16px;background:#000;overflow:hidden;box-shadow:inset 0 0 0 1px rgba(56,189,248,.25),0 0 40px rgba(56,189,248,.1)}.crystal-oled-glow{position:absolute;top:-30%;right:-10%;width:60%;height:80%;background:radial-gradient(circle,rgba(56,189,248,.22),transparent 70%);filter:blur(18px);animation:crystalBreath 4s ease-in-out infinite;pointer-events:none}@keyframes crystalBreath{0%,to{opacity:.45}50%{opacity:1}}.crystal-oled-label{position:relative;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:rgba(125,211,252,.55);margin-bottom:8px}.crystal-oled-value{position:relative;font-family:var(--mono),monospace;font-size:clamp(1.6rem,7vw,2.1rem);font-weight:600;text-align:right;color:#e0f2fe;text-shadow:0 0 20px rgba(56,189,248,.45);word-break:break-all;line-height:1.2}.crystal-pad{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:10px;gap:10px}.crystal-glass{position:relative;height:58px;border:none;border-radius:16px;cursor:pointer;font-family:inherit;font-size:1.25rem;font-weight:600;color:#0f172a;background:linear-gradient(165deg,hsla(0,0%,100%,.95),rgba(241,245,249,.75) 40%,rgba(203,213,225,.55));box-shadow:inset 0 1px 0 hsla(0,0%,100%,.9),inset 0 -1px 0 rgba(148,163,184,.35),0 8px 16px rgba(0,0,0,.25),0 2px 0 rgba(15,23,42,.2);transition:transform .08s,box-shadow .08s;overflow:hidden}.crystal-glass:before{content:"";position:absolute;top:0;left:10%;right:10%;height:45%;border-radius:16px 16px 40% 40%;background:linear-gradient(180deg,hsla(0,0%,100%,.85),hsla(0,0%,100%,0));pointer-events:none}.crystal-glass span{position:relative;z-index:1}.crystal-glass:active{transform:translateY(3px) scale(.98);box-shadow:inset 0 1px 0 hsla(0,0%,100%,.7),0 2px 6px rgba(0,0,0,.2)}.crystal-glass--wide{grid-column:span 2}.crystal-glass--op{color:#0369a1;background:linear-gradient(165deg,rgba(224,242,254,.95),rgba(186,230,253,.7),rgba(125,211,252,.45))}.crystal-glass--fn{color:#9a3412;background:linear-gradient(165deg,rgba(255,247,237,.95),hsla(32,98%,83%,.65),hsla(31,97%,72%,.4))}.crystal-glass--eq{color:#fff;background:linear-gradient(165deg,#38bdf8,#0284c7 50%,#0369a1);box-shadow:inset 0 1px 0 hsla(0,0%,100%,.4),0 8px 20px rgba(14,165,233,.4),0 2px 0 #0c4a6e}.ad-slot{margin:12px 0;min-height:0}.ad-reserved{border-radius:12px;background:color-mix(in srgb,var(--bg-2) 80%,transparent);border:1px solid var(--line)}.ad-skeleton{position:absolute;inset:0;margin:auto;border-radius:10px;overflow:hidden;background:var(--bg-2)}.ad-skeleton-shimmer{width:100%;height:100%;background:linear-gradient(90deg,transparent 0,color-mix(in srgb,var(--accent) 12%,transparent) 50%,transparent 100%);background-size:200% 100%;animation:adShimmer 1.4s ease-in-out infinite}@keyframes adShimmer{0%{background-position:100% 0}to{background-position:-100% 0}}@media (pointer:coarse){.btn-action,.nav-links a,.search-trigger,.theme-toggle,button{min-height:44px;min-width:44px}.slider-range{height:12px}.slider-range::-webkit-slider-thumb{width:28px;height:28px}.card{padding:18px 16px}}.tool-feedback{margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}.tool-feedback__row{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.tool-feedback__label{font-size:13px;color:var(--muted);font-weight:550;margin-right:4px}.tool-feedback__btn{display:inline-flex;align-items:center;gap:6px;min-height:40px;min-width:44px;padding:8px 14px;border-radius:12px;border:1px solid var(--line-strong);background:var(--surface-solid);color:var(--ink);font-size:14px;font-weight:600;cursor:pointer;transition:transform .15s ease,background .15s ease,border-color .15s ease}.tool-feedback__btn:hover{transform:translateY(-1px);border-color:color-mix(in srgb,var(--accent) 40%,var(--line))}.tool-feedback__btn.is-active.is-up{background:color-mix(in srgb,var(--ok) 18%,transparent);border-color:color-mix(in srgb,var(--ok) 45%,transparent);color:var(--ok)}.tool-feedback__btn.is-active.is-down{background:color-mix(in srgb,var(--warn) 16%,transparent);border-color:color-mix(in srgb,var(--warn) 40%,transparent);color:var(--warn)}.tool-feedback__count{font-size:12px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;opacity:.85}.tool-feedback__link{background:none;border:none;color:var(--muted);font-size:12.5px;font-weight:550;cursor:pointer;text-decoration:underline;padding:6px 8px;min-height:40px}.tool-feedback__link:hover{color:var(--accent-2)}.tool-feedback__note{margin-top:12px}.tool-feedback__note label{margin-top:0}.tool-feedback__note textarea{width:100%;resize:vertical;min-height:64px;font:inherit;color:var(--ink);background:var(--surface-solid);border:1px solid var(--line-strong);border-radius:12px;padding:10px 12px}.tool-feedback__note textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.tool-feedback__thanks{margin:10px 0 0;font-size:13px;color:var(--ok);font-weight:550}.tool-feedback__note-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:8px}.tool-feedback__thanks--warn{color:var(--warn)}.tool-feedback__btn:disabled{opacity:.6;cursor:wait}.lang-switch{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}.lang-btn{font-size:12px;font-weight:600;padding:7px 10px;border:0;border-radius:0;background:transparent;color:var(--muted)}.lang-btn.is-active{background:var(--ink);color:var(--paper)}[data-theme=dark] .lang-btn.is-active{background:var(--accent-2);color:#042f2e}html[dir=rtl] .nav-links{direction:rtl}.tool-nav{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:12px}.tool-nav__back,.tool-nav__home{display:inline-flex;align-items:center;min-height:40px;padding:8px 14px;border-radius:10px;font-size:14px;font-weight:600;text-decoration:none;border:1px solid var(--line);background:var(--panel,#fff);color:var(--ink);cursor:pointer}.tool-nav__back:hover,.tool-nav__home:hover{border-color:var(--accent-2,#0d9488);color:var(--accent-2,#0d9488)}[data-theme=dark] .tool-nav__back,[data-theme=dark] .tool-nav__home{background:var(--panel)}