:root{--sidebar-w:260px;--sidebar-bg:#1e293b;--sidebar-surface:#263448;--sidebar-border:#334155;--sidebar-text:#cbd5e1;--sidebar-muted:#64748b;--sidebar-hover:#2d3f55;--sidebar-active-bg:#1e3a5f;--sidebar-active:#60a5fa;--bg:#f8fafc;--surface:#fff;--surface-2:#f1f5f9;--surface-3:#e2e8f0;--border:#e2e8f0;--border-strong:#cbd5e1;--text-1:#0f172a;--text-2:#475569;--text-3:#94a3b8;--text-inv:#f8fafc;--green:#0d6b3e;--green-mid:#16a34a;--green-light:#dcfce7;--green-fg:#fff;--amber:#b45309;--amber-light:#fef3c7;--amber-fg:#fff;--red:#b91c1c;--red-light:#fee2e2;--blue:#1d4ed8;--blue-light:#dbeafe;--purple:#7c3aed;--purple-light:#ede9fe;--teal:#0e7490;--teal-light:#cffafe;--font-display:Georgia,"Times New Roman",serif;--font-ui:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;--font-mono:"SF Mono",Consolas,"Cascadia Code","Courier New",monospace;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--space-2xl:48px;--space-3xl:64px;--r-sm:6px;--r-md:10px;--r-lg:14px;--r-xl:20px;--shadow-xs:0 1px 3px rgba(20,18,16,.06),0 1px 2px rgba(20,18,16,.04);--shadow-sm:0 2px 8px rgba(20,18,16,.07),0 1px 3px rgba(20,18,16,.05);--shadow-md:0 4px 16px rgba(20,18,16,.09),0 2px 6px rgba(20,18,16,.06);--shadow-lg:0 8px 32px rgba(20,18,16,.12),0 3px 10px rgba(20,18,16,.07);--ease:cubic-bezier(.16,1,.3,1);--t-fast:.12s;--t-base:.2s;--t-slow:.35s}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text-1);font-family:var(--font-ui);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app-shell{display:flex;min-height:100vh}.app-sidebar{background:var(--sidebar-bg);border-right:1px solid var(--sidebar-border);display:flex;flex-direction:column;height:100vh;left:0;overflow-x:hidden;overflow-y:auto;position:fixed;scrollbar-color:var(--sidebar-border) transparent;scrollbar-width:thin;top:0;width:var(--sidebar-w);z-index:200}.app-sidebar::-webkit-scrollbar{width:4px}.app-sidebar::-webkit-scrollbar-thumb{background:var(--sidebar-border);border-radius:2px}.app-main{background:var(--bg);display:flex;flex:1;flex-direction:column;margin-left:var(--sidebar-w);min-height:100vh}.page-wrapper{flex:1;margin:0 auto;max-width:1440px;padding:var(--space-2xl) var(--space-2xl);width:100%}.mobile-topbar{align-items:center;background:var(--sidebar-bg);border-bottom:1px solid var(--sidebar-border);display:none;height:56px;justify-content:space-between;left:0;padding:0 var(--space-md);position:fixed;right:0;top:0;z-index:200}h1,h2,h3{font-family:var(--font-display);font-weight:700;line-height:1.2}h1,h2,h3,h4,h5,h6{color:var(--text-1)}h4,h5,h6{font-family:var(--font-ui);font-weight:600;line-height:1.3}.page-title{color:var(--text-1);font-family:var(--font-display);font-size:2.4rem;font-weight:800;letter-spacing:-.02em;line-height:1.15}.page-subtitle{color:var(--text-2);font-family:var(--font-ui);font-size:1rem;font-weight:400;margin-top:6px}.section-label{color:var(--text-3);font-family:var(--font-ui);font-size:.7rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase}.mono{font-family:var(--font-mono)}.field-label{color:var(--text-2);display:block;font-size:.8rem;font-weight:600;letter-spacing:.06em;margin-bottom:6px;text-transform:uppercase}.field-input{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--surface);border:1.5px solid var(--border);border-radius:var(--r-md);color:var(--text-1);font-family:var(--font-ui);font-size:.98rem;padding:11px 14px;transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);width:100%}.field-input:focus{border-color:var(--green-mid);box-shadow:0 0 0 3px #2a9e621f;outline:none}.field-input::-moz-placeholder{color:var(--text-3)}.field-input::placeholder{color:var(--text-3)}.field-input[type=date],.field-input[type=datetime-local]{font-family:var(--font-ui)}.field-number{font-family:var(--font-mono);font-size:1.1rem;font-weight:600;text-align:center}.btn{align-items:center;border:none;border-radius:var(--r-md);cursor:pointer;display:inline-flex;font-family:var(--font-ui);font-size:.92rem;font-weight:600;gap:8px;justify-content:center;letter-spacing:.01em;padding:11px 22px;text-decoration:none;transition:all var(--t-fast) var(--ease);white-space:nowrap}.btn:focus-visible{outline:2px solid var(--green-mid);outline-offset:2px}.btn-primary{background:var(--green);color:var(--green-fg)}.btn-primary:hover{background:#155533;box-shadow:0 4px 12px #1a664040;transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--surface-2);border:1.5px solid var(--border);color:var(--text-1)}.btn-secondary:hover{background:var(--surface-3)}.btn-amber{background:var(--amber);color:var(--amber-fg)}.btn-amber:hover{background:#9a6d15}.btn-ghost{background:transparent;border:1.5px solid var(--border);color:var(--text-2)}.btn-ghost:hover{background:var(--surface-2);color:var(--text-1)}.btn-full{width:100%}.btn-lg{font-size:1rem;padding:13px 28px}.btn-sm{font-size:.82rem;padding:7px 14px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow-xs);overflow:hidden}.card-padded{padding:var(--space-xl)}.card-padded-lg{padding:var(--space-2xl)}.card-accent-green{border-top:3px solid var(--green)}.card-accent-amber{border-top:3px solid var(--amber)}.card-accent-blue{border-top:3px solid var(--blue)}.card-accent-purple{border-top:3px solid var(--purple)}.card-accent-teal{border-top:3px solid var(--teal)}.card-accent-red{border-top:3px solid var(--red)}.card-left-green{border-left:4px solid var(--green)}.card-left-amber{border-left:4px solid var(--amber)}.card-left-blue{border-left:4px solid var(--blue)}.card-left-purple{border-left:4px solid var(--purple)}.result-hero{align-items:baseline;border-radius:var(--r-lg);display:flex;flex-wrap:wrap;gap:var(--space-md);padding:var(--space-xl) var(--space-2xl)}.result-hero.green{background:linear-gradient(135deg,var(--green) 0,#2a9e62 100%)}.result-hero.amber{background:linear-gradient(135deg,var(--amber) 0,#d4971e 100%)}.result-hero.blue{background:linear-gradient(135deg,var(--blue) 0,#2471a3 100%)}.result-hero.purple{background:linear-gradient(135deg,var(--purple) 0,#8a55d6 100%)}.result-hero.dark{background:linear-gradient(135deg,#1c1a17,#2a2724)}.result-hero.teal{background:linear-gradient(135deg,var(--teal) 0,#1a8090 100%)}.result-number{color:#fff;font-family:var(--font-mono);font-size:3.5rem;font-weight:700;letter-spacing:-.03em;line-height:1}.result-unit{color:#ffffffa6;font-family:var(--font-ui);font-size:.85rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase}.result-row{align-items:center;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;padding:12px 0}.result-row:last-child{border-bottom:none}.result-key{color:var(--text-3);font-size:.82rem;font-weight:600;letter-spacing:.07em;text-transform:uppercase}.result-val{color:var(--text-1);font-family:var(--font-mono);font-size:.98rem;font-weight:600}.faq-list{display:flex;flex-direction:column;gap:1px}.faq-item{border-bottom:1px solid var(--border);padding:16px 0}.faq-item:last-child{border-bottom:none}.faq-item h3,.faq-item h4{color:var(--text-1);font-family:var(--font-ui);font-size:.95rem;font-weight:600;margin-bottom:6px}.faq-item p{color:var(--text-2);font-size:.9rem;line-height:1.65;margin:0}.rule{border:none;border-top:1px solid var(--border);margin:var(--space-lg) 0}.rule-strong{border-top-color:var(--border-strong)}.page-head{border-bottom:1px solid var(--border);margin-bottom:var(--space-2xl);padding-bottom:var(--space-lg)}.page-head-meta{align-items:center;display:flex;gap:10px;margin-bottom:12px}.page-head-icon{font-size:1.8rem;line-height:1}.tool-page{max-width:1200px}.tool-layout{align-items:start;display:grid;gap:var(--space-2xl);grid-template-columns:400px 1fr}.tool-panel{position:sticky;top:var(--space-lg)}.result-panel{min-height:200px}.mode-tabs{background:var(--surface-2);border-radius:var(--r-md);display:flex;gap:2px;margin-bottom:var(--space-lg);padding:3px}.mode-tab{background:transparent;border:none;border-radius:var(--r-sm);color:var(--text-2);cursor:pointer;flex:1;font-family:var(--font-ui);font-size:.88rem;font-weight:500;padding:9px 12px;text-align:center;transition:all var(--t-fast) var(--ease)}.mode-tab.active{background:var(--surface);box-shadow:var(--shadow-xs);color:var(--text-1);font-weight:700}.sr-only{height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px;clip:rect(0,0,0,0);border:0;white-space:nowrap}.error-text{color:var(--red);font-size:.85rem;font-weight:500;margin-top:6px}.badge{align-items:center;border-radius:20px;display:inline-flex;font-size:.72rem;font-weight:700;letter-spacing:.06em;padding:2px 8px;text-transform:uppercase}.badge-green{background:var(--green-light);color:var(--green)}.badge-amber{background:var(--amber-light);color:var(--amber)}.badge-blue{background:var(--blue-light);color:var(--blue)}.badge-purple{background:var(--purple-light);color:var(--purple)}@media(max-width:1100px){.tool-layout{gap:var(--space-xl);grid-template-columns:360px 1fr}}@media(max-width:1024px){.app-sidebar{transform:translate(-100%);transition:transform var(--t-slow) var(--ease)}.app-sidebar.open{transform:translate(0)}.app-main{margin-left:0;padding-top:56px}.mobile-topbar{display:flex}.page-wrapper{padding:var(--space-xl) var(--space-lg)}}@media(max-width:768px){.tool-layout{gap:var(--space-lg);grid-template-columns:1fr}.tool-panel{position:static}.page-title{font-size:1.8rem}.result-number{font-size:2.5rem}.page-wrapper{padding:var(--space-lg) var(--space-md)}}:focus-visible{outline:2px solid var(--green-mid);outline-offset:2px}@keyframes fadeUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.animate-fadeUp{animation:fadeUp .4s var(--ease) both}.animate-fadeIn{animation:fadeIn .3s var(--ease) both}.stagger-1{animation-delay:60ms}.stagger-2{animation-delay:.12s}.stagger-3{animation-delay:.18s}.stagger-4{animation-delay:.24s}.sidebar-brand{border-bottom:1px solid var(--sidebar-border);padding:20px 16px 16px}.brand-link{align-items:center;display:flex;gap:10px;text-decoration:none}.brand-glyph{font-size:1.6rem;line-height:1}.brand-text-wrap{display:flex;flex-direction:column}.brand-name{color:#f0ede6;font-family:var(--font-display);font-size:1.05rem;font-weight:700;line-height:1.1}.brand-sub{color:var(--sidebar-muted);font-family:var(--font-ui);font-size:.7rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase}.sidebar-today{background:var(--sidebar-surface);border-bottom:1px solid var(--sidebar-border);padding:14px 16px}.today-label{color:var(--sidebar-muted);font-size:.65rem;font-weight:700;letter-spacing:.12em;margin-bottom:3px;text-transform:uppercase}.today-date{color:var(--sidebar-text);font-family:var(--font-ui);font-size:.82rem;font-weight:600;line-height:1.3}.today-time{color:var(--sidebar-active);font-family:var(--font-mono);font-size:.78rem;font-variant-numeric:tabular-nums;margin-top:2px}.sidebar-nav{flex:1;overflow-y:auto}.nav-group,.sidebar-nav{padding:8px 0}.nav-group+.nav-group{border-top:1px solid var(--sidebar-border);padding-top:12px}.nav-group-label{color:var(--sidebar-muted);font-size:.63rem;font-weight:700;letter-spacing:.14em;padding:4px 16px 6px;text-transform:uppercase}.nav-item{align-items:center;border-radius:0;color:var(--sidebar-text);display:flex;font-size:.88rem;font-weight:500;gap:10px;padding:8px 16px;position:relative;text-decoration:none;transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease)}.nav-item:hover{background:var(--sidebar-hover);color:#f0ede6}.nav-item.router-link-exact-active{background:var(--sidebar-active-bg);color:var(--sidebar-active);font-weight:600}.nav-item.router-link-exact-active:before{background:var(--sidebar-active);border-radius:0 2px 2px 0;content:"";height:60%;left:0;position:absolute;top:50%;transform:translateY(-50%);width:3px}.nav-icon{flex-shrink:0;font-size:1rem;text-align:center;width:20px}.nav-label{flex:1}.sidebar-footer{background:var(--sidebar-surface);border-top:1px solid var(--sidebar-border);padding:12px 16px}.lang-select{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--sidebar-bg);background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath fill='%23645e57' d='m0 0 5 6 5-6z'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat;border:1px solid var(--sidebar-border);border-radius:var(--r-sm);color:var(--sidebar-text);cursor:pointer;font-family:var(--font-ui);font-size:.82rem;margin-bottom:8px;padding:7px 28px 7px 10px;width:100%}.lang-select:focus{border-color:var(--sidebar-active);outline:none}.sidebar-copy{color:var(--sidebar-muted);font-size:.68rem;margin:0;text-align:center}.mobile-brand{align-items:center;color:var(--sidebar-text);display:flex;font-family:var(--font-display);font-size:1.05rem;font-weight:700;gap:8px;text-decoration:none}.mobile-brand-text{color:#f0ede6}.mobile-menu-toggle{background:none;border:none;cursor:pointer;display:flex;flex-direction:column;gap:5px;padding:6px}.bar{background:var(--sidebar-text);border-radius:1px;display:block;height:2px;transition:all var(--t-base) var(--ease);width:22px}.sidebar-overlay{background:#00000080;display:none;inset:0;position:fixed;z-index:190}@media(max-width:1024px){.sidebar-overlay{display:block}}.app-footer{align-items:center;background:var(--sidebar-bg);border-top:1px solid var(--sidebar-border);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding:20px var(--space-2xl)}.footer-links-row{display:flex;flex-wrap:wrap;gap:16px}.footer-link{color:var(--sidebar-muted);font-size:.8rem;text-decoration:none;transition:color var(--t-fast)}.footer-link:hover{color:var(--sidebar-text)}.footer-copy{color:var(--sidebar-muted);font-size:.78rem;margin:0}