:root{--navy:#122e42;--ink:#19384b;--muted:#647681;--orange:#c85828;--line:#dce4e9;--bg:#f3f6f8;--blue:#e8eff4}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);font:16px/1.75 system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}a:hover{color:var(--orange)}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{opacity:.55;cursor:wait}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--orange);outline-offset:3px}input,select,textarea{color:var(--ink);min-width:0;font-size:16px}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.35;letter-spacing:-.025em}h1{font-size:clamp(31px,3.3vw,48px);font-weight:650}h2{font-size:26px}h3{font-size:20px}p{margin:14px 0}small,.fine{font-size:13px;color:var(--muted)}.muted{color:var(--muted);font-size:14px}.wrap{width:min(1240px,calc(100% - 64px));margin:auto}header{background:#fff;border-bottom:1px solid var(--line)}.navrow{display:flex;align-items:center;justify-content:space-between;min-height:91px;gap:30px}.brand{display:inline-block;color:var(--navy);font-size:29px;line-height:1.1;font-weight:780;letter-spacing:-.04em}.brand>span{color:var(--orange)}.brand small{display:block;font-size:12px;font-weight:500;letter-spacing:.16em;margin-top:8px;color:var(--muted)}nav{display:flex;gap:27px;align-items:center;font-size:14px}.button{display:inline-flex;align-items:center;justify-content:center;gap:16px;background:var(--orange);color:white;border:1px solid var(--orange);padding:12px 22px;font-weight:600;font-size:16px;line-height:1.6;min-height:50px;border-radius:3px}.button:hover{background:#a6431c;color:#fff;border-color:#a6431c}.secondary{background:white;color:var(--ink);border-color:#bdcbd5}.secondary:hover{background:var(--blue);color:var(--ink);border-color:#a0b2c0}.wide{width:100%;margin-top:22px}.menu{display:none}.breadcrumb{font-size:12px;color:var(--muted);margin:24px 0}.intro{padding:10px 0 35px}.intro>p{font-size:18px;color:var(--muted);margin-bottom:0;max-width:900px}.eyebrow{display:block;font-size:12px;letter-spacing:.13em;font-weight:650;color:var(--muted);margin-bottom:16px}.workspace{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:30px;align-items:start}.tool-form{padding:32px;background:white;border:1px solid var(--line);border-radius:5px}.panel-title{display:flex;align-items:center;gap:13px;margin-bottom:26px}.panel-title 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22px;counter-increment:steps}.tool-aside li:before{content:counter(steps,decimal-leading-zero);position:absolute;left:0;top:1px;color:#829fac;font-size:12px}.tool-aside li strong{font-size:15px;font-weight:600}.tool-aside li p{font-size:13px;color:#a4b9c7;margin:7px 0}.basis{border-top:1px solid #3b5567;border-bottom:1px solid #3b5567;padding:20px 0;margin:25px 0}.basis small{color:#a4b9c7}.basis strong{font-size:22px;display:block;margin:4px 0}.basis>span{font-size:12px;color:#a4b9c7}.aside-link{display:block;font-size:14px;margin:18px 0}.tool-aside .aside-link{color:#e3ecf2}.reading{max-width:820px;margin:60px 0}.reading section{margin-bottom:36px}.reading h2{font-size:26px;margin-bottom:15px}.reading p{color:#556c7b;line-height:1.95}.faq{padding:17px 0;border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;font-weight:600;line-height:1.6}.faq p{font-size:15px}.tool-directory{border-top:1px solid var(--line);padding:40px 0 65px}.tool-directory>div{display:grid;grid-template-columns:repeat(3,1fr);gap:0 30px;margin-top:20px}.tool-directory a{padding:18px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;font-size:15px}.tool-directory a span{color:var(--orange)}.form-message{color:#9c3d1b;font-size:15px;overflow-wrap:anywhere}.form-message:empty{display:none}.form-message:not(:empty){padding:15px;background:#fff6ef;border:1px solid #edc8b4}.form-message.success{color:#256144;background:#edf8f1;border-color:#b4d5c0}.wizard-progress{display:flex;gap:18px;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:25px;font-size:13px}.wizard-progress>span{color:var(--muted)}.wizard-progress>span.active{color:var(--orange);font-weight:650}.form-step h2{font-size:22px;margin-bottom:22px}.form-step+.form-step{margin-top:30px}.js-wizard .form-step{display:none}.js-wizard 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minmax(0,1fr);gap:30px;padding-bottom:60px;align-items:start}.result-banner{padding:32px;background:#fff;border:1px solid var(--line);border-top:3px solid var(--orange)}.result-banner p{font-size:14px;color:var(--muted)}.budget{font-size:clamp(27px,3.8vw,46px);font-weight:650;color:var(--navy);line-height:1.4;overflow-wrap:anywhere;margin:20px 0}.budget small{font-size:20px;font-weight:500}.result-metrics{display:grid;grid-template-columns:1fr 1fr;gap:25px;border-top:1px solid var(--line);padding-top:25px}.result-metrics span{font-size:13px;color:var(--muted);display:block}.result-metrics strong{font-size:25px;display:block;margin-top:8px}.result-metrics small{font-size:13px;font-weight:400}.notice{padding:17px 20px;border-left:3px solid #d8a253;background:#fff6e9;font-size:14px;line-height:1.8}.result-section{padding:30px 0;border-bottom:1px solid var(--line)}.result-section h2{font-size:25px}.result-section p{color:var(--muted)}.result-section small{display:block;margin:13px 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0}.admin-heading h1{font-size:31px}.link-button{border:0;background:none;color:var(--ink)}.admin-nav{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:35px}.admin-nav a{padding:8px 14px;background:white;border:1px solid var(--line)}.admin-nav .active{background:var(--navy);color:white}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.stats-grid>div{padding:22px;background:white;border:1px solid var(--line)}.stats-grid span{display:block;font-size:14px;color:var(--muted)}.stats-grid strong{display:block;font-size:30px;margin-top:8px}.dashboard-columns{display:grid;grid-template-columns:1fr 1fr;gap:35px;margin:32px 0}.record{display:block;background:white;padding:18px 20px;border-bottom:1px solid var(--line);overflow-wrap:anywhere}.record>span{display:block;font-size:13px;color:var(--muted);margin-top:5px}.record strong{font-size:15px}.record p{font-size:14px}.history{background:white;border:1px solid var(--line);padding:18px;margin:16px 0}.history summary{cursor:pointer;font-size:14px}.price-edit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:25px 0}.price-edit{border:1px solid var(--line);padding:18px}.tool-form>h3{margin-top:25px}.tool-form>.field{margin:18px 0}.admin-main>h2{margin:28px 0 18px}pre{white-space:pre-wrap;word-break:break-word;background:#e8eef2;padding:20px;font-size:13px}.login-wrap{max-width:520px;margin:65px auto}.search-form{display:flex;gap:14px;margin:20px 0}.export-links{display:flex;gap:25px;font-size:14px;margin:20px 0}.pagination{display:flex;gap:20px;margin:25px 0}.empty{padding:30px;background:#fff;color:var(--muted)}
@media(max-width:950px){.menu{display:block;border:1px solid var(--line);background:white;padding:8px 12px;font-size:14px}.navrow{flex-wrap:wrap;gap:20px;padding:20px 0;min-height:82px}#nav{display:none;width:100%;gap:15px;flex-wrap:wrap}#nav.open{display:flex}.workspace,.result-layout{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:20px}.tool-form{padding:24px}.tool-aside{padding:25px}.tool-aside h2{font-size:26px}.price-edit-grid{grid-template-columns:1fr 1fr}}
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@media(max-width:359px){.wrap{width:calc(100% - 28px)}.field-grid,.material-grid{grid-template-columns:1fr}.panel-title .tag{margin-left:0}.panel-title{flex-wrap:wrap}.result-metrics,.facts{grid-template-columns:1fr}.brand{font-size:24px}.wizard-progress{font-size:11px;gap:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.tq-icon{display:inline-grid;place-items:center;background:#173047;color:#fff!important;border-radius:5px;font-size:15px;width:32px;height:32px;vertical-align:middle}.area-workspace{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(260px,1fr);gap:28px}.geometry-diagrams svg,.geometry-result svg{width:100%;height:auto;max-width:420px}.geometry-result{text-align:center}.delivery-actions{display:flex;flex-wrap:wrap;gap:12px}.delivery-actions .button{min-height:46px}.area-calculation{margin-top:20px}.field{font-size:14px}dialog{max-width:520px;width:calc(100% - 32px);max-height:90vh;border:1px solid #aab7c1;border-radius:8px;padding:0}dialog::backdrop{background:#0d223cb3}[hidden]{display:none!important}.area-workspace>*{min-width:0}.admin-form-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}@media(max-width:767px){.area-workspace{grid-template-columns:1fr}.delivery-actions{display:grid;grid-template-columns:1fr;width:100%}.result-metrics{grid-template-columns:1fr}.admin-form-grid{grid-template-columns:1fr 1fr}.brand{font-size:20px}.brand small{font-size:12px}input,select,textarea{font-size:16px;max-width:100%}} 

@media(max-width:767px){.area-workspace .field-grid{grid-template-columns:1fr}.area-workspace .field-grid{margin:18px 0}.area-workspace .button{max-width:100%;white-space:normal}}
/* v1.2 geometry and administration */
#face-options{display:grid;gap:12px;margin:12px 0}#face-options label{display:flex;align-items:center;gap:10px}#live-geometry svg,.geometry-result svg{width:100%;height:auto;max-width:600px}fieldset label{display:inline-flex;align-items:center;gap:6px;margin:6px 12px 6px 0}.tool-form details{margin:18px 0;padding:12px 0;border-bottom:1px solid #dbe3e8}.tool-form label{overflow-wrap:anywhere}.tool-form button{white-space:normal;min-height:44px}input,select,textarea{min-width:0;max-width:100%;font-size:16px}.field-grid>*{min-width:0}.admin-nav{flex-wrap:wrap}.delivery-actions{flex-wrap:wrap}