[hidden]{display:none!important}
:root{--ink:#1e2a28;--muted:#687673;--paper:#f3f5f4;--surface:#fff;--soft:#f8faf9;--line:#d9e2de;--green:#256447;--green-dark:#174a33;--green-soft:#e2f0e7;--danger:#af3535;--shadow:0 12px 34px rgba(28,48,39,.08)}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif}.estimator-shell{width:min(1360px,100%);margin:auto;padding:34px 30px 52px}.page-header{padding:0 2px 26px;border-bottom:1px solid var(--line)}.back-link{display:inline-flex;color:var(--green);font-size:14px;font-weight:800;text-decoration:none}.brand-line{margin-top:24px;color:var(--muted);font-size:13px;font-weight:800}.brand-line span{font-weight:500}.heading-row,.section-heading,.result-heading,.preview-heading{display:flex;justify-content:space-between;gap:18px;align-items:flex-end}.heading-row h1{margin:7px 0 8px;font-size:38px;line-height:1.12}.heading-row p{max-width:690px;margin:0;color:var(--muted);line-height:1.7}.version-chip,.state-badge{display:inline-flex;align-items:center;min-height:32px;border-radius:99px;padding:0 12px;background:var(--green-soft);color:var(--green-dark);font-size:13px;font-weight:800;white-space:nowrap}.mode-switch{display:flex;gap:8px;margin-top:24px}.mode-button,.surface-tab,.secondary-action{width:auto;min-height:38px;padding:0 14px;border:1px solid #b9c8c0;border-radius:8px;background:#fff;color:#44534e;font-size:14px;font-weight:800;box-shadow:none}.mode-button.active,.surface-tab.active{border-color:var(--green);background:var(--green);color:#fff}.estimator-workspace{display:grid;grid-template-columns:minmax(340px,.85fr) minmax(500px,1.3fr);gap:24px;align-items:start;margin-top:26px}.calculator-card,.results-card,.preview-card,.bathroom-summary{border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow)}.calculator-card,.results-card,.preview-card,.bathroom-summary{padding:26px}.section-heading h2,.result-heading h2,.preview-heading h2,.bathroom-summary h2{margin:3px 0 0;font-size:22px}.section-heading>span{color:var(--muted);font-size:13px;font-weight:700}.eyebrow{margin:0;color:var(--green);font-size:12px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}form{margin-top:22px}fieldset{min-width:0;margin:0;padding:18px 0;border:0;border-top:1px solid var(--line)}fieldset:first-of-type{padding-top:0;border-top:0}legend{padding:0 0 12px;font-size:14px;font-weight:900}.field-grid{display:grid;gap:14px}.two-up{grid-template-columns:repeat(2,minmax(0,1fr))}.three-up{grid-template-columns:repeat(3,minmax(0,1fr))}label{display:grid;gap:7px;color:#43514e;font-size:13px;font-weight:800}input,select{width:100%;height:46px;border:1px solid #becbc5;border-radius:8px;padding:0 11px;background:#fff;color:var(--ink);font:inherit;font-size:15px}.input-unit{display:flex;align-items:center;gap:7px;height:46px;padding:0 10px;border:1px solid #becbc5;border-radius:8px;background:#fff}.input-unit input{height:42px;min-width:0;border:0;padding:0}.input-unit b{color:var(--muted);font-size:12px;white-space:nowrap}.currency b:first-child{color:var(--green);font-size:17px}.toggle-field{display:flex;grid-template-columns:none;align-items:center;gap:10px;margin-top:16px;cursor:pointer}.toggle-field>input{position:absolute;width:1px;height:1px;opacity:0}.toggle-track{position:relative;width:42px;height:24px;flex:0 0 42px;border-radius:999px;background:#aab8b1}.toggle-track i{position:absolute;left:3px;top:3px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.2)}.toggle-field input:checked+.toggle-track{background:var(--green)}.toggle-field input:checked+.toggle-track i{transform:translateX(18px)}.toggle-field small{display:block;margin-top:2px;color:var(--muted);font-size:12px;font-weight:500}.form-actions{display:grid;gap:10px;margin-top:8px}button{display:flex;justify-content:center;align-items:center;gap:12px;width:100%;min-height:50px;border:0;border-radius:9px;background:var(--green);color:#fff;font:inherit;font-size:16px;font-weight:900;cursor:pointer;box-shadow:0 7px 15px rgba(37,100,71,.2)}button:hover{background:var(--green-dark)}button:disabled{opacity:.7;cursor:wait}.form-error{margin:14px 0 0;color:var(--danger);font-size:13px;font-weight:800}.bathroom-note{margin:10px 0 0;color:var(--muted);font-size:12px;line-height:1.6}.surface-tabs{display:flex;gap:8px;overflow:auto;padding-bottom:4px}.surface-tab{flex:0 0 auto}.bathroom-actions{margin-top:16px}.secondary-action{border-color:#9cb4a6;background:#f4faf6;color:var(--green-dark)}.output-column{display:grid;gap:24px}.results-card{min-height:356px}.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:22px}.stat-grid article{min-height:132px;display:flex;flex-direction:column;justify-content:center;padding:18px;border:1px solid var(--line);border-radius:10px;background:var(--soft)}.stat-grid article.emphasis{border-color:#b5d3c0;background:#eff8f2}.stat-grid span{color:var(--muted);font-size:13px;font-weight:800}.stat-grid strong{margin:9px 0 3px;color:var(--green-dark);font-size:36px;line-height:1}.secondary-results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:18px 0 0}.secondary-results div{padding:12px;border-radius:8px;background:#f8faf9}.secondary-results dt{color:var(--muted);font-size:12px;font-weight:800}.secondary-results dd{margin:5px 0 0;font-size:13px}.secondary-results b{color:var(--green-dark);font-size:16px}.preview-card{min-height:330px;overflow:hidden;background:linear-gradient(135deg,#fff,#f5faf6)}.preview-legend{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.preview-legend span{font-size:12px;font-weight:800;color:var(--muted)}.preview-legend span:before{content:"";display:inline-block;width:13px;height:13px;margin-right:5px;border:1px solid #94a39b;border-radius:2px;background:#e9f0eb;vertical-align:-2px}.preview-legend .legend-cut:before{background:repeating-linear-gradient(45deg,#f1f3ec 0 4px,#aeb7ac 4px 6px)}.preview-legend .legend-grout:before{background:#c7cdcb}.tile-preview{display:grid;place-items:center;width:100%;min-height:270px;margin-top:14px;padding:4px}.tile-svg{display:block;width:100%;max-height:420px}.tile,.tile-simplified{stroke:#71817a;stroke-width:2;vector-effect:non-scaling-stroke}.space-outline{stroke:#26342f;stroke-width:3;vector-effect:non-scaling-stroke}.cut-label{fill:#4e5e55;font-size:90px;font-weight:800;text-anchor:middle;paint-order:stroke;stroke:#f8faf9;stroke-width:10px}.dimension-label{fill:#526159;font-size:82px;font-weight:800}.preview-message{margin:4px 0 0;color:var(--muted);font-size:13px;font-weight:700;text-align:center}.bathroom-summary table{width:100%;border-collapse:collapse;margin-top:16px;font-size:14px}.bathroom-summary th,.bathroom-summary td{padding:11px 8px;border-top:1px solid var(--line);text-align:right}.bathroom-summary th:first-child,.bathroom-summary td:first-child{text-align:left}.bathroom-summary tfoot{color:var(--green-dark);font-weight:900}@media(max-width:950px){.estimator-workspace{grid-template-columns:1fr}.three-up{grid-template-columns:1fr}.output-column{grid-row:2}}@media(max-width:620px){.estimator-shell{padding:22px 14px 34px}.heading-row{align-items:start;flex-direction:column;gap:12px}.heading-row h1{font-size:31px}.calculator-card,.results-card,.preview-card,.bathroom-summary{padding:20px;border-radius:11px}.two-up,.secondary-results{grid-template-columns:1fr}.stat-grid{gap:10px}.stat-grid article{min-height:116px}.stat-grid strong{font-size:31px}.preview-heading{flex-direction:column;gap:10px}.preview-legend{justify-content:flex-start}.tile-preview{min-height:220px}.tile-svg{max-height:330px}.bathroom-summary{overflow:auto}}

.corner-plan{margin:12px 0}.corner-plan svg{width:100%;max-width:300px;border:1px solid #b9c8c0;border-radius:8px;background:#f8faf9}.plan-room{fill:#edf3ef;stroke:#526159;stroke-width:2}.plan-column{fill:#d89348}.plan-handle{fill:#7a3e1f;cursor:nwse-resize}.corner-buttons{display:grid;grid-template-columns:1fr 1fr;gap:6px}.corner-buttons button{min-height:34px;font-size:13px}

.column-surface{border-color:#c88850;background:#fff3e5;color:#7a3e1f}.column-surface.active{border-color:#9b5429;background:#b8682f;color:#fff}

.preview-card{min-height:620px}.tile-preview{height:540px;min-height:540px}.tile-svg{height:100%;max-height:none}@media(max-width:620px){.preview-card{min-height:300px}.tile-preview{height:280px;min-height:220px}.tile-svg{height:100%;max-height:none}}



.column-toolbar{display:flex;align-items:center;gap:12px;margin-bottom:12px}.column-toolbar .secondary-action{flex:0 0 auto}.column-limit-note{color:var(--muted);font-size:12px;font-weight:700}.column-list{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}.column-chip{width:auto;min-height:34px;padding:0 11px;border:1px solid #b9c8c0;border-radius:8px;background:#fff;color:#44534e;font-size:13px;box-shadow:none}.column-chip.active,.corner-buttons button.active{border-color:var(--green);background:var(--green);color:#fff}.corner-buttons button:disabled{background:#edf1ef;color:#98a49f;cursor:not-allowed;opacity:1}.active-column-title{margin:12px 0;color:var(--green-dark);font-size:13px;font-weight:900}.delete-column{margin-top:14px;min-height:38px;background:#fff5f4;border:1px solid #d9aaa5;color:#91413c;font-size:13px;box-shadow:none}.delete-column:hover{background:#fce8e6}.plan-column{fill:#d89348;cursor:pointer}.plan-column.active{fill:#b8682f;stroke:#7a3e1f;stroke-width:2}.plan-column-label,.plan-column-size{fill:#fff;font-size:9px;font-weight:900;text-anchor:middle;pointer-events:none}.plan-column-label.active{font-size:10px}.plan-handle{fill:#7a3e1f;cursor:nwse-resize}.column-overlay{opacity:.92;stroke:#8e4e28;stroke-width:5}.column-overlay-label{fill:#6f371c;font-size:72px;font-weight:950;text-anchor:middle;paint-order:stroke;stroke:#fff2df;stroke-width:12px}@media(max-width:620px){.column-toolbar{align-items:flex-start;flex-direction:column}.column-toolbar .secondary-action{width:100%}}
.floor-area-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:14px}.floor-area-summary span{padding:10px;border-radius:9px;background:#f5f8f5;color:var(--muted);font-size:12px}.floor-area-summary b{display:block;margin-top:3px;color:var(--ink);font-size:16px}.floor-area-summary small{grid-column:1/-1;color:var(--muted);font-size:12px}@media(max-width:620px){.floor-area-summary{grid-template-columns:1fr}}

/* Bathroom unfolded preview */
.layout-origin-panel{margin-top:2px}.layout-origin-grid{align-items:end}.layout-origin-panel>strong{display:block;margin-bottom:12px;color:var(--ink);font-size:14px}.bathroom-layout-origin{margin:18px 0;padding:15px;border:1px solid var(--line);border-radius:10px;background:var(--soft)}.layout-origin-note{margin:10px 0 0;color:var(--muted);font-size:12px;line-height:1.65}.layout-offset-field.is-disabled{opacity:.5}.layout-offset-field.is-disabled .input-unit{background:#eef2f0}.layout-offset-field.is-disabled input{cursor:not-allowed}.bathroom-unfold{margin-top:22px;padding:28px;border:1px solid var(--border,#d8e0dc);border-radius:20px;background:#fbfdfb;box-shadow:0 16px 40px rgba(28,54,43,.08)}
.unfold-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:20px}
.unfold-heading h2{margin:4px 0 0;font-size:1.5rem}
.unfold-heading>span{padding:7px 11px;border-radius:999px;background:#e8f2ec;color:#276547;font-size:.84rem;font-weight:800;white-space:nowrap}
.bathroom-unfold-grid{display:grid;grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr) minmax(0,.82fr);grid-template-areas:". opposite ." "left floor right" ". entrance .";gap:15px;align-items:stretch}
.unfold-card{display:flex!important;flex-direction:column;width:100%;min-height:270px;padding:17px!important;border:1px solid #cad8d0!important;border-radius:16px!important;background:#fff!important;color:#18352a!important;text-align:left!important;box-shadow:none!important;cursor:zoom-in;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease}
.unfold-card:hover,.unfold-card:focus-visible{border-color:#28734f!important;box-shadow:0 10px 24px rgba(35,105,72,.14)!important;transform:translateY(-2px)}
.unfold-card-floor{grid-area:floor;min-height:330px}
.unfold-card-opposite-wall{grid-area:opposite}
.unfold-card-entrance-wall{grid-area:entrance}
.unfold-card-left-wall{grid-area:left}
.unfold-card-right-wall{grid-area:right}
.unfold-card-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;margin-bottom:8px}
.unfold-card-title{display:flex;align-items:center;flex-wrap:wrap;gap:7px}
.unfold-card-title strong{font-size:1.04rem}
.unfold-card-title em{padding:3px 7px;border-radius:999px;background:#e7f1ea;color:#2b674a;font-size:.7rem;font-style:normal;font-weight:900;white-space:nowrap}
.unfold-card-heading small{color:#537064;font-weight:800}
.unfold-card-canvas{display:grid;place-items:center;flex:1;width:100%;min-height:185px;padding:4px;overflow:hidden;border-radius:11px;background:#f5f8f5}
.unfold-card-floor .unfold-card-canvas{min-height:240px}
.unfold-card-canvas .tile-svg{width:100%;height:210px;max-height:210px}
.unfold-card-floor .tile-svg{height:265px;max-height:265px}
.unfold-card-hint{align-self:flex-end;margin-top:9px;color:#28734f;font-size:.82rem;font-weight:850}
.unfold-card-floor .unfold-thumbnail-rotate-cw .tile-svg{transform:rotate(90deg) scale(.82);transform-origin:center}
@media(min-width:761px){
  .unfold-thumbnail-rotate-cw .tile-svg{transform:rotate(90deg) scale(.86);transform-origin:center}
  .unfold-thumbnail-rotate-ccw .tile-svg{transform:rotate(-90deg) scale(.86);transform-origin:center}
  .unfold-thumbnail-rotate-half .tile-svg{transform:rotate(180deg) scale(.9);transform-origin:center}
}
.preview-dialog{width:min(1180px,calc(100vw - 40px));max-width:none;padding:0;border:0;border-radius:22px;background:#fff;color:#18352a;box-shadow:0 28px 80px rgba(9,28,20,.34)}
.preview-dialog::backdrop{background:rgba(12,26,20,.68);backdrop-filter:blur(3px)}
.preview-dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 26px 14px;border-bottom:1px solid #e1e8e4}
.preview-dialog-heading h2{margin:4px 0 0;font-size:1.6rem}
.preview-dialog-close{display:grid!important;place-items:center;width:44px!important;height:44px!important;padding:0!important;border:1px solid #cad8d0!important;border-radius:50%!important;background:#f5f8f5!important;color:#18352a!important;font-size:1.8rem!important;line-height:1!important;box-shadow:none!important}
.preview-dialog-canvas{display:grid;place-items:center;height:min(68vh,720px);min-height:420px;padding:24px 30px 10px;overflow:hidden}
.preview-dialog-canvas .tile-svg{width:100%;height:100%;max-height:none}
.preview-dialog .preview-message{padding:0 28px 22px}
@media(max-width:760px){
  .bathroom-unfold{padding:20px 16px}
  .unfold-heading{align-items:flex-end}
  .bathroom-unfold-grid{grid-template-columns:1fr;grid-template-areas:"floor" "opposite" "entrance" "left" "right"}
  .unfold-card-floor{grid-column:auto}
  .unfold-card,.unfold-card-floor{min-height:250px}
  .unfold-card-canvas,.unfold-card-floor .unfold-card-canvas{min-height:180px}
  .unfold-card-canvas .tile-svg,.unfold-card-floor .tile-svg{height:205px;max-height:205px}
  .preview-dialog{width:calc(100vw - 20px)}
  .preview-dialog-heading{padding:18px 18px 12px}
  .preview-dialog-canvas{height:64vh;min-height:320px;padding:16px 12px 6px}
}
/* Bathroom door and combined wall columns */
.unfold-heading-actions{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:8px}
.unfold-heading-actions>span{padding:7px 10px;border-radius:999px;background:#edf4ef;color:#3d5e50;font-size:.8rem;font-weight:800;white-space:nowrap}
.unfold-column-legend::before{content:"";display:inline-block;width:10px;height:10px;margin-right:6px;border:1px solid #9d5b2c;border-radius:2px;background:#e8ad63;vertical-align:-1px}
.unfold-door-legend::before{content:"";display:inline-block;width:10px;height:10px;margin-right:6px;border:1px solid #8a6614;border-radius:2px;background:#f6c945;vertical-align:-1px}
.mirror-door-button{width:auto!important;min-height:34px!important;padding:6px 11px!important;border:1px solid #7da28e!important;border-radius:999px!important;background:#fff!important;color:#276547!important;font-size:.82rem!important;box-shadow:none!important}
.mirror-door-button:hover,.mirror-door-button:focus-visible{background:#e8f2ec!important}
.download-a4-button{width:auto!important;min-height:36px!important;padding:7px 13px!important;border:1px solid #256447!important;border-radius:999px!important;background:#256447!important;color:#fff!important;font-size:.82rem!important;box-shadow:0 5px 12px rgba(37,100,71,.18)!important}
.download-a4-button:hover,.download-a4-button:focus-visible{background:#174a33!important}.download-a4-button:disabled{cursor:wait;opacity:.62}
.unfold-note{margin:-8px 0 18px;color:#61746c;font-size:.8rem;font-weight:700}
.wall-column-zone{fill:#f3d4aa}
.wall-column-tile{stroke:#9d5b2c}
.wall-column-divider{stroke:#8e4e28;stroke-width:10}
.wall-column-label{fill:#6f371c;font-size:72px;font-weight:950;text-anchor:middle;paint-order:stroke;stroke:#fff2df;stroke-width:14px}
.floor-door-marker{fill:#f6c945;stroke:#8a6614;stroke-width:6}
.door-overlay{fill:#fff0a6;fill-opacity:.94;stroke:#8a6614;stroke-width:12}
.door-swing-line{stroke:#9a741c;stroke-width:8;stroke-dasharray:24 14}
.door-label{fill:#6c5010;font-size:86px;font-weight:950;text-anchor:middle;dominant-baseline:middle;paint-order:stroke;stroke:#fff7cf;stroke-width:16px}
@media(max-width:760px){
  .unfold-heading{align-items:flex-start;flex-direction:column}
  .unfold-heading-actions{justify-content:flex-start}
  .unfold-note{margin-top:0}
}
/* Flat estimator grout switch */
.flat-grout-calculation .toggle-field{margin-top:0}
.flat-grout-width-field{display:grid;margin-top:16px;transition:opacity .18s ease}
.flat-grout-width-field.is-disabled{opacity:.5}
.flat-grout-width-field.is-disabled .input-unit{background:#edf1ef}
.flat-grout-width-field input:disabled{cursor:not-allowed;color:#7c8984;background:transparent}
.flat-grout-color{margin-top:2px;padding:18px;border:1px solid #c9d9d0;border-radius:10px;background:#f4f8f5}
.flat-grout-color legend{padding:0 7px;color:var(--green-dark)}
.flat-grout-color label>small{color:var(--muted);font-size:12px;font-weight:500;line-height:1.55}