#ftp-weight-converter{--primary: #2563eb;--primary-dark: #1d4ed8;--primary-light: #eff6ff;--secondary: #7c3aed;--secondary-light: #f5f3ff;--success: #15803d;--success-light: #f0fdf4;--warning: #b45309;--warning-light: #fffbeb;--text: #1f2937;--muted: #64748b;--background: #f4f7fb;--surface: #ffffff;--border: #dbe3ef;--shadow: 0 12px 32px rgba(15, 23, 42, .08);--small-shadow: 0 5px 16px rgba(15, 23, 42, .07);--radius-large: 18px;--radius-medium: 12px;--radius-small: 8px;width:100%;min-height:100vh;margin:0;color:var(--text);background:radial-gradient(circle at top left,rgba(37,99,235,.08),transparent 32%),var(--background);font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.65}#ftp-weight-converter,#ftp-weight-converter *{box-sizing:border-box}#ftp-weight-converter button,#ftp-weight-converter input{font:inherit}#ftp-weight-converter a{color:var(--primary-dark)}#ftp-weight-converter .page-container{width:min(100% - 32px,1050px);margin:0 auto;padding:24px 0 50px}#ftp-weight-converter .page-navigation{position:sticky;top:10px;z-index:100;display:flex;align-items:center;gap:7px;margin-bottom:22px;padding:9px;overflow-x:auto;background:#fffffff5;border:1px solid var(--border);border-radius:14px;box-shadow:var(--small-shadow);backdrop-filter:blur(10px);scrollbar-width:thin}#ftp-weight-converter .page-navigation a,#ftp-weight-converter .page-navigation a:visited{flex:0 0 auto;padding:9px 13px;color:#1f2937;background:transparent;border-radius:8px;font-size:.92rem;font-weight:700;text-decoration:none;white-space:nowrap;transition:color .2s ease,background-color .2s ease,transform .2s ease}#ftp-weight-converter .page-navigation a:hover,#ftp-weight-converter .page-navigation a:focus-visible{color:#000;background:var(--primary-light);outline:none}#ftp-weight-converter .page-navigation a.active,#ftp-weight-converter .page-navigation a.active:visited,#ftp-weight-converter .page-navigation a:active{color:#000!important;background:#dbeafe!important}#ftp-weight-converter .page-navigation a:hover{transform:translateY(-1px)}#ftp-weight-converter .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin-bottom:17px;color:var(--muted);font-size:.9rem}#ftp-weight-converter .breadcrumb a{font-weight:700;text-decoration:none}#ftp-weight-converter .breadcrumb a:hover,#ftp-weight-converter .breadcrumb a:focus-visible{color:#000;text-decoration:underline;outline:none}#ftp-weight-converter .hero-section{position:relative;margin-bottom:24px;padding:clamp(30px,6vw,58px);overflow:hidden;color:#fff;background:linear-gradient(135deg,#2563ebfa,#7c3aedf0);border-radius:var(--radius-large);box-shadow:var(--shadow);animation:ftpWeightFadeUp .6s ease both}#ftp-weight-converter .hero-section:before{content:"";position:absolute;top:-90px;right:-75px;width:240px;height:240px;background:#ffffff1a;border-radius:50%}#ftp-weight-converter .hero-section:after{content:"";position:absolute;bottom:-100px;left:-70px;width:210px;height:210px;background:#ffffff14;border-radius:50%}#ftp-weight-converter .hero-content{position:relative;z-index:1;max-width:820px}#ftp-weight-converter .hero-label{display:inline-block;margin-bottom:14px;padding:6px 12px;color:#fff;background:#ffffff29;border:1px solid rgba(255,255,255,.3);border-radius:999px;font-size:.82rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase}#ftp-weight-converter .hero-section h1{margin:0 0 14px;color:#fff;font-size:clamp(2rem,6vw,3.25rem);line-height:1.15}#ftp-weight-converter .hero-section p{max-width:790px;margin:0;color:#fffffff0;font-size:1.08rem}#ftp-weight-converter .hero-note{display:inline-block;margin-top:16px;padding:8px 12px;color:#fff;background:#ffffff21;border:1px solid rgba(255,255,255,.24);border-radius:8px;font-size:.9rem;font-weight:700}#ftp-weight-converter .quick-access{margin-bottom:24px;padding:22px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-large);box-shadow:var(--shadow);text-align:center}#ftp-weight-converter .quick-access h2{margin:0 0 14px;color:var(--text);font-size:1.3rem}#ftp-weight-converter .quick-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(185px,1fr));gap:11px}#ftp-weight-converter .quick-link,#ftp-weight-converter .quick-link:visited{display:block;padding:11px 14px;color:var(--primary-dark);background:var(--primary-light);border:1px solid #bfdbfe;border-radius:9px;font-size:.94rem;font-weight:700;text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease}#ftp-weight-converter .quick-link:hover,#ftp-weight-converter .quick-link:focus-visible{color:#000;background:#dbeafe;transform:translateY(-1px);outline:none}#ftp-weight-converter .quick-link:active{color:#000}#ftp-weight-converter .converter-section,#ftp-weight-converter .content-section,#ftp-weight-converter .related-tools,#ftp-weight-converter .footer-section{margin-top:24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-large);box-shadow:var(--shadow);scroll-margin-top:100px}#ftp-weight-converter .converter-section,#ftp-weight-converter .content-section,#ftp-weight-converter .related-tools{padding:clamp(22px,5vw,36px);animation:ftpWeightFadeUp .65s ease both}#ftp-weight-converter .converter-section h2,#ftp-weight-converter .content-section h2,#ftp-weight-converter .related-tools h2{margin:0 0 13px;color:var(--text);font-size:clamp(1.35rem,4vw,1.85rem);line-height:1.3}#ftp-weight-converter .converter-section>h2:after,#ftp-weight-converter .content-section h2:after,#ftp-weight-converter .related-tools h2:after{content:"";display:block;width:50px;height:4px;margin-top:8px;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:999px}#ftp-weight-converter .section-introduction{max-width:840px;margin:0 0 23px;color:var(--muted)}#ftp-weight-converter .content-section h3{margin:25px 0 8px;color:var(--text);font-size:1.18rem}#ftp-weight-converter .content-section p{margin:0 0 14px;color:#334155}#ftp-weight-converter .content-section p:last-child{margin-bottom:0}#ftp-weight-converter .content-section ul,#ftp-weight-converter .content-section ol{margin:0;padding-left:23px}#ftp-weight-converter .content-section li{margin-bottom:9px;color:#334155}#ftp-weight-converter .content-section li:last-child{margin-bottom:0}#ftp-weight-converter .content-section li::marker{color:var(--primary);font-weight:700}#ftp-weight-converter .information-note,#ftp-weight-converter .warning-note{margin-top:17px;padding:15px 17px;border-radius:var(--radius-small)}#ftp-weight-converter .information-note{color:#334155;background:var(--primary-light);border:1px solid #bfdbfe;border-left:4px solid var(--primary)}#ftp-weight-converter .warning-note{color:#78350f;background:var(--warning-light);border:1px solid #fde68a;border-left:4px solid var(--warning)}#ftp-weight-converter .converter-card{padding:clamp(20px,5vw,31px);background:linear-gradient(135deg,#eff6ffbf,#f5f3ffbf);border:1px solid #c4b5fd;border-radius:var(--radius-medium)}#ftp-weight-converter .converter{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:15px;align-items:end}#ftp-weight-converter .input-group{min-width:0}#ftp-weight-converter .input-group label{display:block;margin-bottom:7px;color:var(--text);font-weight:700}#ftp-weight-converter .input-group input{display:block;width:100%;min-height:52px;padding:12px 14px;color:var(--text);background:#fff;border:1px solid #cbd5e1;border-radius:9px;outline:none;transition:border-color .2s ease,box-shadow .2s ease}#ftp-weight-converter .input-group input:hover{border-color:#94a3b8}#ftp-weight-converter .input-group input:focus{border-color:var(--primary);box-shadow:0 0 0 4px #2563eb21}#ftp-weight-converter .switch-btn{display:inline-flex;align-items:center;justify-content:center;min-width:110px;min-height:50px;padding:11px 16px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--secondary));border:0;border-radius:9px;cursor:pointer;font-weight:800;box-shadow:0 6px 15px #2563eb33;transition:transform .2s ease,box-shadow .2s ease,filter .2s ease}#ftp-weight-converter .switch-btn:hover{transform:translateY(-2px);filter:brightness(.97);box-shadow:0 9px 20px #2563eb42}#ftp-weight-converter .switch-btn:focus-visible{outline:3px solid rgba(37,99,235,.25);outline-offset:3px}#ftp-weight-converter .switch-btn:active{transform:translateY(0)}#ftp-weight-converter .additional-features{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}#ftp-weight-converter .action-btn{min-height:44px;padding:9px 17px;color:var(--primary-dark);background:#fff;border:1px solid #93c5fd;border-radius:8px;cursor:pointer;font-weight:700;transition:color .2s ease,background-color .2s ease,transform .2s ease}#ftp-weight-converter .action-btn:hover,#ftp-weight-converter .action-btn:focus-visible{color:#000;background:#dbeafe;outline:none;transform:translateY(-1px)}#ftp-weight-converter .conversion-history{margin-top:24px;padding:18px;background:#fff;border:1px solid var(--border);border-radius:10px}#ftp-weight-converter .conversion-history h3{margin:0 0 11px;color:var(--text);font-size:1.12rem}#ftp-weight-converter .history-item{padding:10px 0;color:#334155;border-bottom:1px solid #edf2f7;overflow-wrap:anywhere}#ftp-weight-converter .history-item:last-child{border-bottom:0}#ftp-weight-converter #historyList p{margin:0;color:var(--muted)}#ftp-weight-converter .formula-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;margin-top:20px}#ftp-weight-converter .formula-card{padding:20px;background:linear-gradient(135deg,var(--primary-light),var(--secondary-light));border:1px solid #c4b5fd;border-radius:var(--radius-medium)}#ftp-weight-converter .formula-card h3{margin:0 0 9px;color:var(--text)}#ftp-weight-converter .formula-card p{margin-bottom:8px}#ftp-weight-converter .formula-expression{display:block;margin-top:12px;padding:11px 13px;color:var(--primary-dark);background:#fff;border:1px solid #bfdbfe;border-radius:8px;font-weight:800;text-align:center}#ftp-weight-converter .table-wrap{margin-top:18px;overflow-x:auto}#ftp-weight-converter .conversion-table{width:100%;min-width:560px;overflow:hidden;background:#fff;border:1px solid var(--border);border-collapse:separate;border-spacing:0;border-radius:10px}#ftp-weight-converter .conversion-table th,#ftp-weight-converter .conversion-table td{padding:12px 14px;border-bottom:1px solid #edf2f7;text-align:left}#ftp-weight-converter .conversion-table th{color:var(--text);background:#eaf2ff;font-weight:800}#ftp-weight-converter .conversion-table tr:last-child td{border-bottom:0}#ftp-weight-converter .feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(205px,1fr));gap:14px;margin-top:20px}#ftp-weight-converter .feature-card{padding:18px;background:#fbfdff;border:1px solid var(--border);border-radius:var(--radius-medium)}#ftp-weight-converter .feature-card h3{margin:0 0 7px;color:var(--text)}#ftp-weight-converter .feature-card p{margin:0;color:var(--muted);font-size:.93rem}#ftp-weight-converter details{margin-bottom:11px;background:#fbfdff;border:1px solid var(--border);border-radius:var(--radius-medium);transition:border-color .2s ease,box-shadow .2s ease}#ftp-weight-converter details:last-child{margin-bottom:0}#ftp-weight-converter details:hover{border-color:#b6c4d8}#ftp-weight-converter details[open]{border-color:#93c5fd;box-shadow:var(--small-shadow)}#ftp-weight-converter summary{padding:14px 16px;color:var(--text);cursor:pointer;font-weight:700}#ftp-weight-converter details p{margin:0;padding:0 16px 15px}#ftp-weight-converter .related-tools{text-align:center}#ftp-weight-converter .related-tools h2:after{margin-right:auto;margin-left:auto}#ftp-weight-converter .related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(195px,1fr));gap:12px;margin-top:18px}#ftp-weight-converter .related-card,#ftp-weight-converter .related-card:visited{display:block;padding:17px 14px;color:var(--text);background:linear-gradient(135deg,var(--primary-light),var(--secondary-light));border:1px solid #c4b5fd;border-radius:10px;font-weight:800;text-decoration:none;transition:color .2s ease,transform .2s ease,box-shadow .2s ease}#ftp-weight-converter .related-card:hover,#ftp-weight-converter .related-card:focus-visible{color:#000;transform:translateY(-2px);box-shadow:var(--small-shadow);outline:none}#ftp-weight-converter .footer-section{padding:23px;text-align:center}#ftp-weight-converter .footer-section p{margin:0 0 10px;color:var(--muted)}#ftp-weight-converter .footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:9px 16px}#ftp-weight-converter .footer-links a,#ftp-weight-converter .footer-links a:visited{color:var(--primary-dark);font-weight:700;text-decoration:none}#ftp-weight-converter .footer-links a:hover,#ftp-weight-converter .footer-links a:focus-visible{color:#000;text-decoration:underline;outline:none}@keyframes ftpWeightFadeUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@media(max-width:760px){#ftp-weight-converter .page-container{width:min(100% - 20px,1050px);padding-top:12px}#ftp-weight-converter .page-navigation{top:5px;margin-bottom:15px;border-radius:11px}#ftp-weight-converter .hero-section{padding:31px 22px;border-radius:15px}#ftp-weight-converter .converter-section,#ftp-weight-converter .content-section,#ftp-weight-converter .quick-access,#ftp-weight-converter .related-tools,#ftp-weight-converter .footer-section{border-radius:14px}#ftp-weight-converter .converter{grid-template-columns:1fr}#ftp-weight-converter .switch-btn{width:100%}#ftp-weight-converter .formula-grid{grid-template-columns:1fr}}@media(max-width:500px){#ftp-weight-converter{font-size:15px}#ftp-weight-converter .page-container{width:min(100% - 14px,1050px)}#ftp-weight-converter .page-navigation a{padding:8px 11px;font-size:.86rem}#ftp-weight-converter .hero-section{padding:27px 18px}#ftp-weight-converter .converter-section,#ftp-weight-converter .content-section,#ftp-weight-converter .quick-access,#ftp-weight-converter .related-tools{padding:19px 15px}#ftp-weight-converter .converter-card{padding:17px 14px}#ftp-weight-converter .additional-features{flex-direction:column}#ftp-weight-converter .action-btn{width:100%}#ftp-weight-converter .quick-links,#ftp-weight-converter .feature-grid,#ftp-weight-converter .related-grid{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){#ftp-weight-converter,#ftp-weight-converter *,#ftp-weight-converter *:before,#ftp-weight-converter *:after{animation:none!important;transition:none!important}}