@import url("https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=DM+Mono:wght@400;500&display=swap");*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--font-sans:"DM Sans",system-ui,sans-serif;--font-mono:"DM Mono",monospace;--bg:#F7F6F3;--bg-card:#FFFFFF;--bg-input:#FFFFFF;--border:#E5E2D9;--border-focus:#1A1A1A;--text:#1A1A1A;--text-muted:#6B6860;--text-light:#9E9B94;--accent:#2563EB;--accent-hover:#1D4ED8;--accent-subtle:#EFF6FF;--result-bg:#F0FDF4;--result-border:#BBF7D0;--result-text:#15803D;--danger:#EF4444;--warning:#F59E0B;--success:#10B981;--radius:10px;--radius-lg:16px;--radius-xl:24px;--shadow-sm:0 1px 3px rgba(0,0,0,0.06),0 1px 2px rgba(0,0,0,0.04);--shadow-md:0 4px 12px rgba(0,0,0,0.08),0 2px 4px rgba(0,0,0,0.04);--shadow-lg:0 10px 30px rgba(0,0,0,0.10),0 4px 8px rgba(0,0,0,0.05)}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}a{color:inherit;text-decoration:none}button,input,select{font-family:inherit}.container{max-width:1100px;margin:0 auto;padding:0 20px}.page-wrapper{min-height:100vh;display:flex;flex-direction:column}main{flex:1 1}.nav{background:var(--bg-card);border-bottom:1px solid var(--border);position:-webkit-sticky;position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}.nav-inner{justify-content:space-between;height:60px;gap:24px}.nav-inner,.nav-logo{display:flex;align-items:center}.nav-logo{font-size:1.2rem;font-weight:700;letter-spacing:-.02em;color:var(--text);gap:6px;white-space:nowrap}.nav-logo span{color:var(--accent)}.nav-links{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}.nav-links::-webkit-scrollbar{display:none}.nav-link{font-size:.82rem;font-weight:500;color:var(--text-muted);padding:6px 10px;border-radius:6px;white-space:nowrap;transition:background .15s,color .15s}.nav-link:hover{background:var(--bg);color:var(--text)}.nav-link.active{background:var(--accent-subtle);color:var(--accent)}.nav-locale{display:flex;align-items:center;gap:4px;flex-shrink:0}.locale-btn{font-size:.78rem;font-weight:600;padding:4px 8px;border-radius:6px;border:1px solid var(--border);background:transparent;color:var(--text-muted);cursor:pointer;transition:all .15s}.locale-btn.active{background:var(--text);color:white;border-color:var(--text)}.hero{padding:56px 0 40px;text-align:center}.hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:700;letter-spacing:-.03em;line-height:1.15;color:var(--text);margin-bottom:12px}.hero p{font-size:1rem;color:var(--text-muted);max-width:480px;margin:0 auto 28px}.search-wrap{max-width:480px;margin:0 auto;position:relative}.search-input{width:100%;padding:12px 16px 12px 44px;border:1.5px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-card);font-size:.95rem;color:var(--text);outline:none;transition:border-color .2s,box-shadow .2s;box-shadow:var(--shadow-sm)}.search-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.1)}.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:1rem;pointer-events:none}.ad-unit,.search-icon{color:var(--text-light)}.ad-unit{background:var(--bg-card);border:1px dashed var(--border);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:.75rem;text-transform:uppercase;letter-spacing:.05em}.ad-unit-horizontal{width:100%;height:90px;margin:24px 0}.ad-unit-sidebar{width:100%;min-height:250px}.categories-section{padding:0 0 48px}.section-label{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-light);margin-bottom:16px}.categories-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));grid-gap:12px;gap:12px}.category-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;cursor:pointer;transition:transform .15s,box-shadow .15s,border-color .15s;display:block}.category-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:transparent}.category-icon{font-size:1.8rem;margin-bottom:10px;display:block}.category-name{font-size:.9rem;font-weight:600;color:var(--text);margin-bottom:4px}.category-count{font-size:.78rem;color:var(--text-muted)}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));grid-gap:10px;gap:10px}.tool-card-link{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;display:flex;align-items:center;gap:12px;transition:transform .15s,box-shadow .15s}.tool-card-link:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}.tool-card-name{font-size:.85rem;font-weight:500;color:var(--text)}.tool-page{padding:32px 0 64px}.tool-layout{display:grid;grid-template-columns:1fr 300px;grid-gap:28px;gap:28px;align-items:start}@media (max-width:860px){.tool-layout{grid-template-columns:1fr}}.tool-header{margin-bottom:24px}.tool-breadcrumb{font-size:.78rem;color:var(--text-muted);margin-bottom:8px;display:flex;align-items:center;gap:6px}.tool-breadcrumb a:hover{color:var(--accent)}.tool-title{font-size:clamp(1.4rem,3vw,1.9rem);font-weight:700;letter-spacing:-.025em;margin-bottom:6px}.tool-description{font-size:.9rem;color:var(--text-muted)}.tabs-container{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}.tabs-header{display:flex;border-bottom:1px solid var(--border);background:var(--bg);padding:6px 6px 0;gap:4px}.tab-btn{padding:9px 18px;font-size:.85rem;font-weight:500;color:var(--text-muted);background:transparent;cursor:pointer;border-radius:8px 8px 0 0;transition:all .15s;white-space:nowrap;border:none;border-bottom:2px solid transparent;position:relative;bottom:-1px}.tab-btn:hover{color:var(--text);background:rgba(0,0,0,.04)}.tab-btn.active{color:var(--accent);background:var(--bg-card);border:1px solid var(--border);border-bottom-color:var(--bg-card)}.tab-content{padding:28px}.converter-form{display:flex;flex-direction:column;gap:20px}.form-row{display:grid;grid-template-columns:1fr auto 1fr;grid-gap:12px;gap:12px;align-items:end}.form-group{display:flex;flex-direction:column;gap:6px}.form-label{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted)}.form-input{width:100%;padding:11px 14px;border:1.5px solid var(--border);border-radius:var(--radius);background:var(--bg-input);font-size:1rem;color:var(--text);font-family:var(--font-mono);outline:none;transition:border-color .2s,box-shadow .2s}.form-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.1)}.form-select{width:100%;border:1.5px solid var(--border);border-radius:var(--radius);background:var(--bg-input);font-size:.88rem;color:var(--text);outline:none;cursor:pointer;transition:border-color .2s;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 7L11 1' stroke='%236B6860' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding:11px 36px 11px 14px}.form-select:focus{border-color:var(--accent)}.swap-btn{width:40px;height:40px;border:1.5px solid var(--border);border-radius:50%;background:var(--bg-card);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.1rem;transition:all .2s;flex-shrink:0;margin-bottom:2px}.swap-btn:hover{background:var(--text);color:white;border-color:var(--text);transform:rotate(180deg)}.result-box{background:var(--result-bg);border:1.5px solid var(--result-border);border-radius:var(--radius);padding:20px 24px;display:flex;align-items:center;justify-content:space-between;gap:12px}.result-value{font-size:1.6rem;font-weight:700;font-family:var(--font-mono);color:var(--result-text);letter-spacing:-.02em}.result-unit{font-size:.85rem;color:var(--text-muted);margin-top:2px}.copy-btn{padding:7px 14px;font-size:.78rem;font-weight:600;border:1.5px solid var(--result-border);border-radius:8px;background:white;color:var(--result-text);cursor:pointer;transition:all .15s;white-space:nowrap}.copy-btn:hover{background:var(--result-text);color:white}.info-panel{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;margin-top:20px}.info-panel h3{font-size:.82rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:12px}.formula-box{background:var(--bg);border-radius:var(--radius);padding:12px 14px;font-family:var(--font-mono);font-size:.88rem;color:var(--text)}.related-tools{display:flex;flex-direction:column;gap:8px}.related-tool-link{padding:10px 14px;background:var(--bg);border-radius:var(--radius);font-size:.84rem;color:var(--text);display:flex;align-items:center;justify-content:space-between;transition:background .15s}.related-tool-link:hover{background:var(--border)}.sidebar{display:flex;flex-direction:column;gap:20px;position:-webkit-sticky;position:sticky;top:80px}.sidebar-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px}.sidebar-card h3{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:14px}.footer{background:var(--text);color:rgba(255,255,255,.7);padding:32px 0;margin-top:auto}.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.footer-logo{font-size:1rem;font-weight:700;color:white}.footer-logo span{color:#60A5FA}.footer-text{font-size:.8rem}@media (max-width:640px){.hero{padding:36px 0 28px}.form-row{grid-template-columns:1fr}.swap-btn{margin:0 auto;width:36px;height:36px}.result-value{font-size:1.3rem}.tab-content{padding:20px 16px}.nav-links{display:none}}