:root{--bg:#f7f9f6;--surface:#fff;--surface2:#eef5f1;--text:#17211e;--muted:#63716c;--line:#d7e2de;--brand:#198a72;--purple:#6544ef;--shadow:0 12px 30px rgba(20,45,38,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif;line-height:1.45}a{color:inherit}button,input,select{font:inherit}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;z-index:100;background:#fff;padding:10px;border-radius:8px}
.top{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.topin{max-width:1180px;margin:auto;min-height:68px;padding:9px 14px;display:flex;align-items:center;justify-content:space-between;gap:12px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:19px;font-weight:900;min-width:0}.logo{width:44px;height:44px;flex:0 0 44px;border-radius:14px;background:linear-gradient(135deg,var(--purple),#7b5cff);color:#fff;display:grid;place-items:center;font-size:27px;box-shadow:0 9px 22px rgba(101,68,239,.25)}.brand-label{white-space:nowrap}.header-actions{display:flex;align-items:center;gap:8px}.theme-btn,.browse-btn{height:44px;border:1px solid var(--line);border-radius:13px;background:var(--surface);color:var(--text);display:inline-flex;align-items:center;justify-content:center;font-weight:800}.theme-btn{width:44px;font-size:0}.theme-btn:before{content:'☾';font:700 28px/1 Arial}.browse-btn{padding:0 14px;text-decoration:none;color:var(--brand)}
.wrap{max-width:1180px;margin:auto;padding:22px 14px 60px}.hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(300px,.9fr);gap:24px;align-items:center;padding:34px;border:1px solid var(--line);border-radius:28px;background:linear-gradient(135deg,#fff,#f2f7f4);box-shadow:var(--shadow)}.eyebrow{display:inline-block;color:var(--brand);font-size:14px;font-weight:900;letter-spacing:.14em;text-transform:uppercase}.hero h1{font-size:clamp(38px,6vw,66px);line-height:1.04;margin:13px 0 16px;max-width:760px}.hero p{font-size:19px;color:var(--muted);margin:0;max-width:700px}.search-panel{padding:20px;border-radius:22px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}.search-panel label{display:block;font-weight:900;margin-bottom:8px}.search-panel input,.search-panel select{width:100%;height:56px;border:2px solid var(--line);border-radius:15px;background:var(--surface);color:var(--text);padding:0 16px;outline:none}.search-panel input:focus,.search-panel select:focus{border-color:var(--brand)}.search-panel select{margin-top:12px}.search-note{margin:10px 2px 0;color:var(--muted);font-size:13px}
.section{margin-top:34px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:16px}.section-head h2{font-size:clamp(28px,5vw,42px);line-height:1.1;margin:0}.section-head p{margin:0;color:var(--muted)}.workspace{display:none}.workspace.show{display:block}.workspace-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.personal-box{padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:22px}.personal-title{display:flex;align-items:center;justify-content:space-between;gap:12px}.personal-title h3{margin:0;font-size:21px}.clear-btn{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:8px 11px;color:var(--brand);font-weight:800}.personal-links{display:grid;gap:9px;margin-top:14px}.personal-links a{padding:13px 14px;border:1px solid var(--line);border-radius:13px;text-decoration:none;background:var(--bg);font-weight:700}.empty-note{color:var(--muted);font-size:14px}
.popular-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.popular-card,.calculator-card{display:flex;align-items:center;gap:14px;padding:18px;background:var(--surface);border:1px solid var(--line);border-radius:20px;text-decoration:none;box-shadow:var(--shadow);min-width:0;transition:transform .15s,border-color .15s}.popular-card:hover,.calculator-card:hover{transform:translateY(-2px);border-color:var(--brand)}.card-icon{width:52px;height:52px;flex:0 0 52px;border-radius:16px;background:var(--surface2);display:grid;place-items:center;font-size:26px}.card-copy{min-width:0}.card-copy strong{display:block;font-size:18px;line-height:1.25}.card-copy small{display:block;color:var(--muted);font-size:13px;margin-top:5px}.arrow{margin-left:auto;color:var(--brand);font-size:22px;font-weight:900}
.category-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.category-btn{min-height:112px;padding:17px;border:1px solid var(--line);border-radius:20px;background:var(--surface);color:var(--text);text-align:left;cursor:pointer;box-shadow:var(--shadow)}.category-btn span{display:block;font-size:26px}.category-btn strong{display:block;margin-top:9px;font-size:16px}.category-btn small{display:block;color:var(--muted);margin-top:3px}.category-btn.active{border:2px solid var(--brand);background:#edf9f5}
.calculator-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.calculator-card{box-shadow:none;padding:15px}.calculator-card .card-icon{width:45px;height:45px;flex-basis:45px;border-radius:14px;font-size:22px}.calculator-card .card-copy strong{font-size:16px}.pagination{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:20px}.page-btn{min-width:105px;height:44px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--text);font-weight:800}.page-btn:disabled{opacity:.4}.page-status{color:var(--muted);font-size:14px;min-width:105px;text-align:center}.no-results{display:none;padding:25px;border:1px dashed var(--line);border-radius:18px;text-align:center;color:var(--muted);background:var(--surface)}.no-results.show{display:block}.footer{padding:28px 16px;text-align:center;border-top:1px solid var(--line);color:var(--muted)}
body.dch-dark{--bg:#0e1916;--surface:#14231e;--surface2:#1a2d27;--text:#f4faf7;--muted:#b4c5bf;--line:#314840;--brand:#65d2b6;--shadow:0 14px 34px rgba(0,0,0,.22);color-scheme:dark}body.dch-dark .top{background:rgba(14,25,22,.96)}body.dch-dark .hero{background:linear-gradient(135deg,#14231e,#0e1916)}body.dch-dark .category-btn.active{background:#173d33}body.dch-dark .theme-btn:before{content:'☀';font-size:23px}
@media(max-width:850px){.hero{grid-template-columns:1fr}.popular-grid,.calculator-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.topin{min-height:62px;padding:8px 12px}.logo{width:42px;height:42px;flex-basis:42px}.brand{font-size:14px}.browse-btn{width:44px;padding:0;font-size:0}.browse-btn:before{content:'1000';font-size:12px}.wrap{padding:14px 12px 46px}.hero{padding:20px 16px;border-radius:23px}.hero h1{font-size:36px}.hero p{font-size:16px}.search-panel{padding:14px}.search-panel input,.search-panel select{height:52px}.search-note{font-size:12px}.workspace-grid,.popular-grid,.calculator-grid{grid-template-columns:1fr}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.section{margin-top:28px}.section-head{align-items:start;flex-direction:column}.popular-card{padding:16px}.calculator-card{padding:14px}.category-btn{min-height:102px}.brand-label{display:block;max-width:150px;overflow:hidden;text-overflow:ellipsis}.pagination{gap:7px}.page-btn{min-width:88px}}
@media(max-width:365px){.brand-label{max-width:130px}.hero h1{font-size:34px}.category-grid{grid-template-columns:1fr 1fr}}