:root{
  --t:#0e7c86;--td:#0a5961;--tdk:#062e32;--g:#f2b544;--gd:#c8922a;
  --gl:rgba(242,181,68,.14);--tl:rgba(14,124,134,.08);--tll:rgba(14,124,134,.05);
  --w:#fff;--bg:#f5fafa;--bg2:#eef7f7;--tx:#1a2e30;--m:#4e6366;--fi:#7a9295;--bd:#c8d8da;
  --fh:'Montserrat',-apple-system,sans-serif;
  --fb:'Inter',-apple-system,sans-serif;
  --r:.75rem;--rl:1rem;
}
*,*::before,*::after{box-sizing:border-box;}
.pc-breadcrumb{background:var(--bg2);border-bottom:1px solid var(--bd);padding:.6rem 1.5rem;font-size:.8rem;}
.pc-breadcrumb-inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;flex-wrap:wrap;gap:.35rem;color:var(--fi);}
.pc-breadcrumb a{color:var(--t);font-weight:500;text-decoration:none;}
.pc-breadcrumb span{color:var(--bd);}
.pc-tool-hero{background:linear-gradient(135deg,#062e32 0%,#0a5961 55%,#0e7c86 100%);padding:3rem 1.5rem 2.5rem;position:relative;overflow:hidden;}
.pc-tool-hero::after{content:'';position:absolute;width:18rem;height:18rem;border-radius:50%;background:rgba(242,181,68,.08);right:-5rem;top:-6rem;pointer-events:none;}
.pc-tool-hero-inner{max-width:1100px;margin:0 auto;position:relative;z-index:1;}
.pc-tool-tag{display:inline-flex;align-items:center;gap:.4rem;background:rgba(242,181,68,.18);border:1px solid rgba(242,181,68,.4);color:#fde68a;font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:.3rem .85rem;border-radius:999px;margin-bottom:.9rem;}
.pc-tool-hero h1{font-size:clamp(1.4rem,3.5vw,2.2rem)!important;font-weight:900!important;color:#fff!important;line-height:1.12!important;letter-spacing:-.03em!important;margin-bottom:.75rem!important;}
.pc-tool-hero-inner>p{color:rgba(255,255,255,.82);font-size:.97rem;max-width:640px;line-height:1.65;margin-bottom:1rem;}
.pc-tool-pills{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.75rem;}
.pc-tool-pills span{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.88);font-size:.77rem;font-weight:600;padding:.28rem .8rem;border-radius:999px;}
.tool-wrap{max-width:1100px;margin:0 auto;padding:2rem 1.5rem 4rem;}
.calc-section{margin-bottom:2.5rem;}
.mode-tabs{display:flex;gap:0;border-bottom:2px solid var(--bd);margin-bottom:1.5rem;overflow-x:auto;scrollbar-width:none;}
.mode-tabs::-webkit-scrollbar{display:none;}
.mode-tab{padding:.7rem 1.2rem;font-family:var(--fh);font-size:.8rem;font-weight:700;color:var(--m);cursor:pointer;border:none;background:none;border-bottom:3px solid transparent;margin-bottom:-2px;white-space:nowrap;transition:all .2s;display:flex;align-items:center;gap:.4rem;}
.mode-tab:hover{color:var(--td);}
.mode-tab.active{color:var(--t);border-bottom-color:var(--t);}
.mode-panel{display:none;}
.mode-panel.active{display:block;}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem;align-items:start;}.calc-grid>*{min-width:0;}
.input-panel,.results-panel{background:var(--w);border:1.5px solid var(--bd);border-radius:var(--rl);padding:1.25rem 1.5rem;box-shadow:0 2px 16px rgba(14,124,134,.07);min-width:0;}
.results-panel{position:sticky;top:88px;overflow:hidden;}
.panel-title{font-family:var(--fh);font-size:.95rem;font-weight:800;color:var(--tdk);margin-bottom:1.1rem;padding-bottom:.65rem;border-bottom:2px solid var(--tl);display:flex;align-items:center;gap:.5rem;}
.panel-title::before{content:'';width:3px;height:1rem;background:var(--t);border-radius:2px;flex-shrink:0;}
.inp-row{display:grid;grid-template-columns:1fr 1fr;gap:.8rem;margin-bottom:.8rem;}
.inp-row.full{grid-template-columns:1fr;}
.inp-row.three{grid-template-columns:1fr 1fr 1fr;}
.inp-group{display:flex;flex-direction:column;gap:.3rem;}
.inp-group label{font-size:.76rem;font-weight:700;color:var(--m);text-transform:uppercase;letter-spacing:.04em;}
.inp-group input,.inp-group select{height:46px;border:1.5px solid var(--bd);border-radius:var(--r);background:var(--bg);padding:.7rem .9rem;font-family:var(--fb);font-size:.92rem;color:var(--tx);transition:border-color .2s,box-shadow .2s;outline:none;width:100%;}
.inp-group input:focus,.inp-group select:focus{border-color:var(--t);box-shadow:0 0 0 3px rgba(14,124,134,.12);background:var(--w);}
.inp-hint{font-size:.7rem;color:var(--fi);}
.calc-btn{width:100%;height:52px;margin-top:1rem;background:var(--t);color:#fff;border:none;border-radius:var(--r);font-family:var(--fh);font-weight:800;font-size:1rem;cursor:pointer;transition:background .2s,transform .15s,box-shadow .2s;display:flex;align-items:center;justify-content:center;gap:.5rem;}
.calc-btn:hover{background:var(--td);transform:translateY(-1px);box-shadow:0 6px 18px rgba(14,124,134,.3);}
.calc-btn.sec{background:var(--tll);color:var(--td);border:1.5px solid rgba(14,124,134,.3);}
.calc-btn.sec:hover{background:var(--tl);border-color:var(--t);}
.action-row{display:flex;gap:.65rem;margin-top:.7rem;}
.btn-pdf,.btn-wa{flex:1;height:44px;border-radius:var(--r);font-family:var(--fh);font-weight:700;font-size:.82rem;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:.4rem;}
.btn-pdf{background:var(--tll);color:var(--td);border:1.5px solid rgba(14,124,134,.3);}
.btn-pdf:hover{background:var(--tl);border-color:var(--t);}
.btn-wa{background:#25d366;color:#fff;border:none;}
.btn-wa:hover{background:#1fb858;}
.results-placeholder{text-align:center;padding:2.25rem 1rem;color:var(--fi);}
.results-placeholder .ph-ico{font-size:2.4rem;margin-bottom:.7rem;opacity:.55;}
.results-placeholder p{font-size:.88rem;line-height:1.7;}
.results-placeholder strong{color:var(--t);}
.res-box{background:var(--bg);border:1.5px solid var(--bd);border-radius:var(--r);overflow:hidden;margin-bottom:.9rem;}
.res-header{background:var(--tdk);color:rgba(255,255,255,.7);font-family:var(--fh);font-size:.62rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:.45rem .8rem;}
.res-row{display:flex;align-items:center;justify-content:space-between;padding:.55rem .8rem;border-bottom:1px solid var(--bd);font-size:.82rem;color:var(--m);gap:.5rem;}
.res-row:last-child{border-bottom:none;}
.res-row.total{background:linear-gradient(135deg,rgba(14,124,134,.07),rgba(242,181,68,.07));border-top:2px solid var(--t);}
.res-row.highlight{background:var(--tdk);}
.res-label{font-size:.78rem;color:var(--fi);}
.res-row.total .res-label{color:var(--tdk);font-weight:700;font-family:var(--fh);}
.res-row.highlight .res-label,.res-row.highlight .res-val{color:#fff;font-family:var(--fh);font-weight:800;}
.res-val{font-family:var(--fh);font-size:.9rem;font-weight:800;color:var(--tdk);white-space:nowrap;}
.res-note{font-size:.75rem;color:var(--fi);line-height:1.55;margin-top:.4rem;}
.status-box{padding:.7rem 1rem;border-radius:var(--r);font-size:.83rem;font-weight:600;margin-bottom:1rem;line-height:1.55;}
.status-box.info{background:var(--tl);border:1px solid rgba(14,124,134,.2);color:var(--td);}
.status-box.warn{background:rgba(242,181,68,.15);border:1px solid rgba(242,181,68,.35);color:#7a5b00;}
.chart-wrapper{margin-top:1rem;padding-top:.9rem;border-top:1px solid var(--bd);position:relative;height:240px;max-height:240px;overflow:hidden;}
.chart-wrapper canvas{max-height:240px!important;}
.chart-title{font-family:var(--fh);font-size:.74rem;font-weight:700;color:var(--td);margin-bottom:.6rem;}
.ad-container.ad-in-calc{margin:1rem 0;min-height:90px;background:transparent;}
/* Room accumulator */
.room-list{display:flex;flex-direction:column;gap:.5rem;margin:.9rem 0;}
.room-item{background:var(--bg2);border:1px solid var(--bd);border-radius:var(--r);padding:.6rem .85rem;display:flex;align-items:center;justify-content:space-between;font-size:.82rem;color:var(--m);}
.room-item strong{color:var(--tdk);font-family:var(--fh);}
.room-del{background:none;border:none;color:var(--fi);cursor:pointer;font-size:1rem;padding:0 .3rem;line-height:1;}
.room-del:hover{color:#c0392b;}
/* Content sections */
.content-section{background:var(--w);border:1px solid var(--bd);border-radius:var(--rl);padding:2rem 2.25rem;margin-bottom:1.25rem;}
.content-section h2{font-family:var(--fh)!important;font-size:clamp(1.1rem,2.5vw,1.55rem)!important;font-weight:900!important;color:#0e7c86!important;line-height:1.22!important;margin-bottom:.9rem!important;letter-spacing:-.03em!important;}
.content-section h3{font-family:var(--fh)!important;font-size:1rem!important;font-weight:800!important;color:#0a5961!important;margin:1.4rem 0 .6rem!important;}
.content-section h4{font-family:var(--fh)!important;font-size:.88rem!important;font-weight:800!important;color:#062e32!important;margin:0 0 .4rem!important;}
.content-section p{font-size:.94rem;color:var(--m);line-height:1.82;margin-bottom:.8rem;}
.content-section ul,.content-section ol{padding-left:1.35rem;margin-bottom:.8rem;}
.content-section li{font-size:.92rem;color:var(--m);line-height:1.72;margin-bottom:.4rem;}
.content-section strong{color:var(--tdk);font-weight:600;}
.content-section a{color:var(--t);}
.example-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1rem;}
.ex-card{background:var(--bg2);border:1px solid var(--bd);border-radius:var(--r);padding:1.2rem;}
.ex-card-tag{display:inline-block;background:var(--tl);color:var(--t);font-family:var(--fh);font-size:.63rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;padding:.22rem .6rem;border-radius:999px;margin-bottom:.6rem;}
.ex-card h4{font-family:var(--fh)!important;font-size:.86rem!important;font-weight:800!important;color:var(--tdk)!important;margin-bottom:.4rem!important;}
.ex-card p{font-size:.81rem;color:var(--m);line-height:1.62;margin:0;}
.ex-result{margin-top:.6rem;padding:.45rem .65rem;background:var(--tdk);border-radius:var(--r);font-family:var(--fh);font-size:.73rem;font-weight:700;color:var(--g);line-height:1.7;}
.tip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1rem;}
.tip-card{background:var(--gl);border:1px solid rgba(242,181,68,.22);border-radius:var(--r);padding:1.2rem;}
.tip-num{font-family:var(--fh);font-size:1.4rem;font-weight:900;color:var(--g);line-height:1;margin-bottom:.45rem;}
.tip-card h4{font-family:var(--fh)!important;font-size:.86rem!important;font-weight:800!important;color:var(--tdk)!important;margin-bottom:.35rem!important;}
.tip-card p{font-size:.81rem;color:var(--m);line-height:1.62;margin:0;}
.faq-list{display:flex;flex-direction:column;gap:.45rem;margin-top:.9rem;}
details.faq-item{background:var(--bg);border:1.5px solid var(--bd);border-radius:var(--r);overflow:hidden;}
details.faq-item[open]{border-color:var(--t);}
details.faq-item summary.faq-q{display:flex;align-items:center;justify-content:space-between;padding:.85rem 1rem;font-family:var(--fh)!important;font-size:.86rem!important;font-weight:700!important;color:var(--tdk)!important;cursor:pointer;list-style:none;gap:.7rem;user-select:none;}
details.faq-item summary.faq-q::-webkit-details-marker{display:none;}
details.faq-item summary.faq-q:hover{color:var(--t)!important;}
details.faq-item[open] .faq-icon{background:var(--t);color:#fff;transform:rotate(45deg);}
.faq-icon{width:22px;height:22px;border-radius:50%;background:var(--tl);color:var(--t);flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:.95rem;transition:all .25s;}
.faq-a{padding:.7rem 1rem .85rem;font-size:.86rem;color:var(--m);line-height:1.77;}
.faq-a a{color:var(--t);text-decoration:underline;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem;margin-top:.9rem;}
.related-card{background:var(--bg);border:1.5px solid var(--bd);border-radius:var(--r);padding:1rem;display:flex;align-items:flex-start;gap:.75rem;text-decoration:none;transition:all .22s;}
.related-card:hover{background:var(--w);border-color:var(--t);transform:translateY(-2px);}
.related-icon{font-size:1.5rem;flex-shrink:0;}
.related-card-name{font-family:var(--fh);font-size:.82rem;font-weight:700;color:var(--tdk);}
.related-card-desc{font-size:.75rem;color:var(--fi);margin-top:.2rem;line-height:1.4;}
.disclaimer-section{background:var(--tdk)!important;border-color:var(--tdk)!important;}
.disclaimer-section h2{color:rgba(255,255,255,.7)!important;font-size:.95rem!important;}
.disclaimer-section h3{color:#fde68a!important;font-size:.88rem!important;}
.disclaimer-section p{color:rgba(255,255,255,.55)!important;font-size:.82rem!important;line-height:1.75!important;}
.disclaimer-section a{color:#fde68a!important;text-decoration:underline!important;}
@media(max-width:900px){.calc-grid{grid-template-columns:1fr;}.results-panel{position:static;}.example-grid,.tip-grid{grid-template-columns:1fr 1fr;}.related-grid{grid-template-columns:1fr 1fr;}.content-section{padding:1.6rem 1.5rem;}}
@media(max-width:640px){.inp-row{grid-template-columns:1fr;}.inp-row.three{grid-template-columns:1fr;}.example-grid,.tip-grid,.related-grid{grid-template-columns:1fr;}.action-row{flex-direction:column;}.pc-tool-hero{padding:2rem 1.25rem 1.75rem;}.content-section{padding:1.35rem 1rem;}.mode-tab{font-size:.72rem;padding:.6rem .85rem;}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;}}

/* ══ UEN-SPECIFIC ════════════════════════════════════ */
.uen-all-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.3rem;margin:.4rem 0}
.uen-unit-card{background:var(--bg);border:1px solid var(--bd);border-radius:.4rem;padding:.35rem .55rem;display:flex;justify-content:space-between;align-items:center}
.uen-unit-card.highlight{background:rgba(14,124,134,.1);border-color:rgba(14,124,134,.35)}
.uen-unit-card .uc-name{font-size:.69rem;color:var(--fi);flex:1;min-width:0}
.uen-unit-card .uc-val{font-family:var(--fh);font-weight:800;color:var(--tdk);font-size:.78rem;text-align:right;word-break:break-all;max-width:58%}
.uen-unit-card.highlight .uc-val{color:var(--t)}
.uen-unit-card .uc-sym{font-size:.62rem;color:var(--t);margin-left:.2rem;flex-shrink:0}
.uen-conv-result{background:linear-gradient(135deg,var(--tdk),var(--td));border-radius:.65rem;padding:.9rem 1.1rem;color:#fff;margin:.4rem 0}
.uen-conv-result .cr-from{font-size:.72rem;opacity:.8;display:block;margin-bottom:.2rem}
.uen-conv-result .cr-to{font-family:var(--fh);font-size:1.5rem;font-weight:900;display:block;line-height:1.1}
.uen-conv-result .cr-sub{font-size:.7rem;opacity:.75;display:block;margin-top:.2rem}
.uen-ref-table{width:100%;border-collapse:collapse;font-size:.77rem}
.uen-ref-table th{background:var(--tdk);color:#fff;font-family:var(--fh);font-weight:700;font-size:.67rem;padding:.3rem .5rem;text-align:left}
.uen-ref-table td{padding:.26rem .5rem;border-bottom:1px solid var(--bd);color:var(--m)}
.uen-ref-table tr:nth-child(even) td{background:var(--bg)}
.uen-ref-table .rv{font-family:var(--fh);font-weight:700;color:var(--t)}
.uen-group-label{font-size:.63rem;text-transform:uppercase;letter-spacing:.06em;color:var(--t);font-weight:800;margin:.45rem 0 .1rem;padding-left:.2rem}