@font-face{font-family:Inter;src:url('fonts/inter-latin.woff2') format('woff2');font-style:normal;font-weight:100 900;font-display:swap}
:root{color-scheme:light;--graphite:#17232d;--navy:#223340;--teal:#167c73;--copper:#c78959;--warm:#f8f7f4;--white:#fff;--stone:#ebece8;--ink:#202d35;--muted:#66757c;--bg:var(--warm);--surface:var(--white);--surface-alt:#f0f1ed;--border:#dce0dc;--accent:#167c73;--accent-hover:#10645d;--accent-soft:#e5f0ec;--on-accent:#fff;--error:#a1352d;--error-bg:#fff1ed;--shadow:0 8px 28px #17232d08;--radius:12px;--radius-sm:6px;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-7:48px;--space-8:64px;--space-9:96px;--text-xs:.75rem;--text-sm:.875rem;--text-base:1rem;--text-lg:1.125rem;--text-xl:1.5rem;--text-2xl:2rem;--text-hero:clamp(2.8rem,5.2vw,4.5rem);--container:1240px;--chart-grid:#dce6df;--chart-sheet:#e9eee6;--chart-part:#a3c2a6;--chart-part-2:#7da794;--chart-waste:#ead6bb;--chart-line:#305849}
:root[data-theme=dark]{color-scheme:dark;--bg:#111c24;--surface:#1a2832;--surface-alt:#22343f;--ink:#edf0ed;--muted:#a4b3b9;--border:#34454e;--accent:#78cbb9;--accent-hover:#a0dfd0;--accent-soft:#223f3f;--on-accent:#112b28;--copper:#e0a677;--error:#ffb7aa;--error-bg:#3d2727;--shadow:0 8px 28px #0002;--chart-grid:#354b50;--chart-sheet:#293e40;--chart-part:#527e6c;--chart-part-2:#426a63;--chart-waste:#685341;--chart-line:#b1dac8}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}body{margin:0;background:var(--bg);color:var(--ink);font:400 15px/1.65 Inter,system-ui,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}button,input,select,textarea{font:inherit}button,a,input,select,textarea{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}img,svg{max-width:100%;vertical-align:middle}h1,h2,h3,h4,p{margin-top:0}h1,h2,h3,h4{line-height:1.15;letter-spacing:-.04em;font-weight:600}h1{font-size:var(--text-hero);line-height:1.07}h2{font-size:clamp(1.85rem,3vw,2.65rem)}h3{font-size:1.25rem;letter-spacing:-.025em}h4{font-size:1rem;letter-spacing:-.02em}p{margin-bottom:1.25rem}::selection{background:var(--accent-soft);color:var(--ink)}:focus-visible{outline:3px solid var(--accent);outline-offset:4px}.container,.wrap{width:min(var(--container),calc(100% - 64px));margin-inline:auto}.skip-link{position:fixed;top:-100px;left:16px;z-index:100;background:var(--surface);padding:12px}.skip-link:focus{top:16px}.muted,.lead{color:var(--muted)}.lead{font-size:var(--text-lg);line-height:1.75;max-width:580px}.eyebrow{display:flex;align-items:center;gap:12px;font-size:11px;font-weight:650;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:24px}.eyebrow:before{content:'';width:21px;height:1px;background:currentColor}.mono,.metric strong,.result-value,output{font-variant-numeric:tabular-nums}.mono{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.arrow{font-size:20px;line-height:1}.site-header{height:88px;border-bottom:1px solid var(--border);background:var(--bg);position:relative;z-index:20}.header-inner{height:100%;display:flex;align-items:center;gap:40px}.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}.brand-symbol{width:39px;height:43px;color:var(--accent)}.brand-name{font-size:17px;font-weight:700;letter-spacing:-.045em;line-height:1.2}.brand-subtitle{font-size:8px;letter-spacing:.14em;line-height:1.8;color:var(--muted)}.site-nav{display:flex;align-items:center;gap:30px;margin-left:auto;font-size:13px;font-weight:500}.site-nav a[aria-current=page]{color:var(--accent)}.header-actions{display:flex;align-items:center;gap:18px}.language-select,.theme-select{border:0;background:transparent;color:var(--muted);font-size:12px;max-width:110px;cursor:pointer}.icon-button{display:inline-grid;place-items:center;width:36px;height:36px;background:transparent;border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--ink)}.menu-toggle{display:none}.button,.btn,button.primary{display:inline-flex;align-items:center;justify-content:center;gap:14px;border:1px solid transparent;border-radius:var(--radius-sm);padding:13px 21px;background:var(--accent);color:var(--on-accent);font-weight:550;font-size:13px;line-height:1.5;transition:background .15s,transform .15s;white-space:normal;text-align:center}.button:hover,.btn:hover{background:var(--accent-hover);color:var(--on-accent);transform:translateY(-1px)}.button.secondary,.btn.secondary{background:var(--surface);color:var(--ink);border-color:var(--border)}.button.secondary:hover{border-color:var(--accent);background:var(--accent-soft)}.button.small{padding:9px 15px;font-size:12px}.text-link{display:inline-flex;align-items:center;gap:14px;font-size:13px;font-weight:550;color:var(--accent)}.hero{padding:78px 0 62px;position:relative;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}.hero-copy h1{max-width:610px;margin-bottom:25px}.hero-copy h1 em{font-style:normal;color:var(--accent)}.hero-actions{display:flex;align-items:center;gap:25px;margin-top:31px}.hero-note{display:flex;align-items:center;gap:9px;margin-top:25px;color:var(--muted);font-size:11px}.hero-note .icon{width:15px;height:15px;color:var(--accent)}.workspace{background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:0 18px 50px #17232d0c;position:relative;overflow:hidden}.workspace-top{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border);font-size:11px}.workspace-title{display:flex;gap:10px;align-items:center;font-weight:600}.workspace-top .icon{width:15px;height:15px;color:var(--accent)}.status-dot{width:6px;height:6px;background:var(--accent);border-radius:100%;display:inline-block;margin-right:6px}.workspace-meta{display:flex;justify-content:space-between;padding:19px 22px 0;font-size:10px;color:var(--muted)}.drawing{padding:14px 20px 10px;background-image:linear-gradient(var(--surface) 0 0);color:var(--chart-line)}.drawing svg{width:100%;height:auto}.drawing .sheet{fill:var(--chart-sheet);stroke:var(--chart-line);stroke-width:1}.drawing .part{fill:var(--chart-part);stroke:var(--surface);stroke-width:3}.drawing .part.alt{fill:var(--chart-part-2)}.drawing .waste{fill:var(--chart-waste)}.drawing text{fill:var(--chart-line);font-family:ui-monospace,monospace;font-size:10px}.drawing .dimension{stroke:var(--chart-line);stroke-width:.8;fill:none}.drawing .grid{stroke:var(--chart-grid);stroke-width:.5;fill:none}.drawing-legend{display:flex;gap:20px;padding:0 22px 18px;color:var(--muted);font-size:10px}.legend-box{display:inline-block;width:7px;height:7px;background:var(--chart-part);margin-right:6px}.legend-box.waste{background:var(--chart-waste)}.workspace-results{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;padding:20px 22px;background:var(--surface-alt);border-top:1px solid var(--border)}.metric span{display:block;font-size:10px;color:var(--muted);margin-bottom:3px}.metric strong{font-size:22px;font-weight:600;letter-spacing:-.04em}.metric strong small{font-size:12px;font-weight:400}.metric:last-child strong{color:var(--accent)}.workspace-foot{padding:12px 22px;display:flex;align-items:center;justify-content:space-between;font-size:10px;color:var(--muted)}.workspace-foot a{color:var(--accent);font-weight:600}.proof-strip{border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:24px 0}.proof-inner{display:flex;justify-content:space-between;align-items:center;gap:24px;color:var(--muted);font-size:12px}.proof-inner span{display:flex;align-items:center;gap:10px}.proof-inner .icon{color:var(--accent);width:18px;height:18px}.section{padding:72px 0}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:32px}.section-heading h2{margin-bottom:12px}.section-heading p{color:var(--muted);margin:0;font-size:14px}.section-heading .eyebrow{margin-bottom:14px}.category-tabs{display:flex;gap:8px;margin-bottom:26px;flex-wrap:wrap}.category-tabs button,.chip{border:1px solid var(--border);background:transparent;color:var(--muted);border-radius:5px;padding:8px 14px;font-size:12px}.category-tabs button[aria-pressed=true],.chip.active{background:var(--ink);color:var(--bg);border-color:var(--ink)}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tool-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:25px;min-height:217px;transition:border-color .15s,box-shadow .15s,transform .15s}.tool-card:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-2px);color:var(--ink)}.card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.tool-icon{width:36px;height:36px;display:grid;place-items:center;background:var(--accent-soft);border:1px solid var(--border);border-radius:6px;color:var(--accent)}.tool-icon .icon{width:22px;height:22px}.badge{display:inline-block;font-size:9px;line-height:1.8;font-weight:600;letter-spacing:.07em;text-transform:uppercase;padding:2px 7px;color:var(--accent);background:var(--accent-soft);border-radius:3px}.tool-card h3{font-size:17px;margin-bottom:10px}.tool-card p{font-size:12px;color:var(--muted);line-height:1.8;margin-bottom:18px}.card-footer{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:10px;color:var(--muted)}.card-footer .arrow{color:var(--accent)}.feature-panel{display:grid;grid-template-columns:1fr 1fr;gap:80px;border-radius:14px;background:var(--navy);color:#f3f5f0;padding:52px;position:relative;overflow:hidden}.feature-panel .eyebrow{color:#91cbb9}.feature-panel h2{font-size:clamp(1.8rem,3vw,2.8rem)}.feature-panel p{color:#b8c7cb;font-size:14px}.feature-panel .button{background:#8ac8b6;color:#16362f}.feature-panel .feature-list{display:grid;gap:18px;align-content:center}.feature-row{display:flex;gap:17px;align-items:start;border-bottom:1px solid #ffffff19;padding-bottom:18px}.feature-row:last-child{border:0;padding-bottom:0}.feature-row .mono{font-size:11px;color:#cfa079;margin-top:2px}.feature-row h3{font-size:15px;margin-bottom:6px}.feature-row p{font-size:12px;margin:0}.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.guide-card{border-bottom:1px solid var(--border);padding-bottom:23px}.guide-art{height:190px;background:var(--surface-alt);border:1px solid var(--border);border-radius:8px;overflow:hidden;margin-bottom:22px;display:grid;place-items:center}.guide-art svg{width:100%;height:100%}.guide-card .eyebrow{font-size:9px;margin-bottom:12px}.guide-card h3{font-size:19px;line-height:1.4;letter-spacing:-.025em}.guide-card p{font-size:12px;color:var(--muted)}.guide-meta{font-size:10px;color:var(--muted);display:flex;justify-content:space-between}.site-footer{border-top:1px solid var(--border);padding:40px 0 25px}.footer-top{display:flex;justify-content:space-between;gap:24px;padding-bottom:32px}.footer-links{display:flex;gap:70px}.footer-links div{display:grid;gap:10px;font-size:12px}.footer-links strong{font-size:11px;color:var(--ink);margin-bottom:6px}.footer-links a{color:var(--muted)}.footer-bottom{display:flex;justify-content:space-between;gap:24px;border-top:1px solid var(--border);padding-top:22px;font-size:10px;color:var(--muted)}.footer-theme{display:flex;align-items:center;gap:10px}.page-header{padding:42px 0 35px}.breadcrumb{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:11px;margin-bottom:28px;flex-wrap:wrap}.page-header h1{font-size:clamp(2rem,4vw,3.1rem);margin-bottom:16px}.page-header .lead{font-size:15px;max-width:700px}.calculator-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:24px;align-items:start}.panel,.card{border:1px solid var(--border);background:var(--surface);border-radius:var(--radius);padding:28px}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid var(--border);padding-bottom:18px;margin-bottom:24px}.panel-heading h2{font-size:18px;margin:0}.panel-heading .mono{font-size:10px;color:var(--muted)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.field{display:grid;gap:7px}.field.full{grid-column:1/-1}.field label,label{font-size:12px;font-weight:550}.field small,.help-text{color:var(--muted);font-size:10px}input,select,textarea{max-width:100%;min-width:0;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--ink);padding:11px 12px;font-size:13px}input:not([type=checkbox]):not([type=radio]),textarea{width:100%}input[aria-invalid=true]{border-color:var(--error)}.input-unit{position:relative}.input-unit input{padding-right:50px}.input-unit span{position:absolute;right:13px;top:12px;font-size:12px;color:var(--muted)}.field-error{color:var(--error);font-size:12px}.form-actions{display:flex;gap:10px;margin-top:26px;flex-wrap:wrap}.result-header{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:14px;font-size:12px}.result-value{font-size:44px;line-height:1.15;letter-spacing:-.05em;font-weight:600;color:var(--accent)}.result-value small{font-size:16px;color:var(--muted);font-weight:400}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:22px;padding-top:22px;border-top:1px solid var(--border)}.result-grid .metric strong{font-size:23px}.notice{border-left:3px solid var(--accent);background:var(--accent-soft);padding:12px 15px;color:var(--ink);font-size:12px;margin-top:22px}.notice.error{background:var(--error-bg);border-color:var(--error);color:var(--error)}.article-layout{display:grid;grid-template-columns:minmax(0,780px) minmax(0,240px);gap:70px;padding-block:24px 72px}.article-body{font-size:15px;line-height:1.9}.article-body h2{font-size:26px;margin:42px 0 18px}.article-body h3{margin-top:30px}.article-body p,.article-body li{color:var(--muted)}.article-body a{text-decoration:underline;text-underline-offset:3px;color:var(--accent)}.article-body table{margin-block:25px}.article-aside{position:sticky;top:28px;align-self:start;font-size:12px}.article-aside nav{display:grid;gap:13px;border-left:1px solid var(--border);padding-left:18px;color:var(--muted)}.article-aside h3{font-size:12px;margin-bottom:18px}.formula{padding:24px;background:var(--surface-alt);border:1px solid var(--border);border-radius:8px;font:14px/1.8 ui-monospace,monospace;overflow:auto}details{border-bottom:1px solid var(--border);padding:19px 0}summary{font-size:14px;font-weight:550;cursor:pointer}details p{margin-top:14px;font-size:13px}table{border-collapse:collapse;width:100%;font-size:12px;text-align:left}th,td{padding:14px;border-bottom:1px solid var(--border)}th{font-weight:550;color:var(--muted);background:var(--surface-alt);font-size:10px;letter-spacing:.04em}td.number,th.number{text-align:right;font-variant-numeric:tabular-nums}.table-scroll{overflow-x:auto}.planner-header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.empty-state{padding:48px 24px;text-align:center;color:var(--muted)}.empty-state h3{color:var(--ink)}.admin-layout{display:grid;grid-template-columns:230px minmax(0,1fr);min-height:100vh}.admin-sidebar{background:var(--graphite);color:#d7e0e2;padding:30px 22px}.admin-sidebar .brand{margin-bottom:44px}.admin-sidebar .brand-subtitle{color:#91a3ab}.admin-nav{display:grid;gap:6px}.admin-nav a{padding:11px 13px;display:flex;align-items:center;gap:12px;border-radius:6px;font-size:12px;color:#acbdc5}.admin-nav a[aria-current=page]{background:#ffffff0c;color:#b5dfd2;border:1px solid #ffffff0a}.admin-nav .icon{width:17px;height:17px}.admin-nav-label{margin:28px 13px 8px;font-size:9px;letter-spacing:.13em;text-transform:uppercase;color:#80949f}.admin-main{padding:32px 42px}.admin-topbar{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);padding-bottom:22px;margin-bottom:35px;font-size:12px;color:var(--muted)}.admin-title{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:28px}.admin-title h1{font-size:30px;margin-bottom:10px}.admin-title p{font-size:13px;color:var(--muted);margin:0}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:28px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:9px;padding:22px}.stat-card span{display:block;font-size:11px;color:var(--muted)}.stat-card strong{display:block;font-size:30px;font-weight:550;margin-block:8px;font-variant-numeric:tabular-nums}.stat-card small{color:var(--accent);font-size:10px}.admin-two-col{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:20px}.activity-item{display:flex;gap:12px;padding:16px 0;border-bottom:1px solid var(--border);font-size:12px}.activity-item .tool-icon{width:28px;height:28px;flex-shrink:0}.activity-item small{display:block;font-size:10px;color:var(--muted)}.search{width:min(100%,420px);margin-bottom:24px}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.design-only{font-size:10px;border:1px solid var(--border);background:var(--surface-alt);padding:7px 12px;color:var(--muted);border-radius:4px}.toast{position:fixed;bottom:24px;right:24px;padding:14px 20px;border:1px solid var(--border);border-radius:8px;background:var(--surface);box-shadow:var(--shadow);z-index:50;font-size:13px}.skeleton{background:var(--surface-alt);border-radius:4px;min-height:20px}.check-row{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}.check-row input{accent-color:var(--accent)}
/* PHP template integration: retain semantic classes and existing event hooks. */
:root{--text-primary:var(--ink);--text-secondary:var(--muted)}
.button-secondary{background:var(--surface);color:var(--ink);border-color:var(--border)}.button-secondary:hover{background:var(--accent-soft);color:var(--ink);border-color:var(--accent)}.hero-visual{min-width:0}.category-nav{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}.category-nav button,.category-nav a{border:1px solid var(--border);background:var(--surface);color:var(--muted);padding:8px 14px;border-radius:5px;font-size:12px}.category-nav button.active,.category-nav button[aria-pressed=true],.category-nav a[aria-current]{background:var(--ink);color:var(--bg);border-color:var(--ink)}.input-panel,.result-panel{min-width:0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px}.input-panel h2,.result-panel h2{font-size:18px;margin-bottom:24px}.field-help{font-size:11px;color:var(--muted)}.toolbar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:24px}.toolbar input{width:auto;flex:1;min-width:160px}.article{max-width:800px;line-height:1.85}.article h2{font-size:25px;margin-top:38px}.article p{color:var(--muted)}.error{color:var(--error)}.notice.error{color:var(--error)}.admin-shell{display:grid;grid-template-columns:230px minmax(0,1fr);min-height:100vh}.admin-shell .admin-sidebar nav{display:grid;gap:6px;margin-top:30px}.admin-shell .admin-sidebar nav a{display:block;padding:11px 13px;font-size:12px;color:#acbdc5;border-radius:6px}.admin-shell .admin-sidebar nav a:hover,.admin-shell .admin-sidebar nav a[aria-current]{background:#ffffff0c;color:#b5dfd2}.admin-shell .admin-main>h1{font-size:30px}.result-panel .metric{padding:16px;background:var(--surface-alt);border-radius:8px}.result-panel .metric strong{font-size:26px}.result-panel svg{max-height:500px}.status{display:inline-flex;align-items:center;gap:6px;border-radius:4px;background:var(--accent-soft);color:var(--accent);padding:3px 8px;font-size:10px}.status.draft{background:var(--surface-alt);color:var(--muted)}[hidden]{display:none!important}
@media(max-width:820px){.admin-shell{grid-template-columns:180px minmax(0,1fr)}}
@media(max-width:540px){.admin-shell{grid-template-columns:1fr}.admin-shell .admin-sidebar nav{display:flex;overflow:auto;margin-top:14px}.admin-shell .admin-sidebar nav a{white-space:nowrap}.input-panel,.result-panel{padding:20px}.category-nav{gap:6px}.category-nav button,.category-nav a{font-size:10px;padding:7px 10px}}
@media(min-width:1600px){body{font-size:16px}}
@media(max-width:1100px){.header-inner{gap:22px}.site-nav{gap:20px}.header-actions{gap:10px}.brand-subtitle{font-size:7px}.hero-grid{gap:35px}.feature-panel{gap:40px;padding:38px}.admin-main{padding:28px}.article-layout{gap:40px}.header-actions .button{display:none}}
@media(max-width:820px){.container,.wrap{width:calc(100% - 40px)}.site-header{height:72px}.header-inner{justify-content:space-between;gap:12px}.brand-symbol{width:32px}.brand-name{font-size:15px}.brand-subtitle{font-size:6px}.menu-toggle{display:inline-grid}.site-nav{display:none;position:absolute;top:71px;left:0;right:0;margin:0;padding:24px;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow)}.site-nav[data-open=true]{display:grid;gap:20px}.hero{padding:48px 0}.hero-grid{grid-template-columns:1fr;gap:38px}.hero-copy h1{max-width:600px}.hero-copy .lead{max-width:530px}.workspace{max-width:600px;width:100%}.proof-inner{display:grid;grid-template-columns:1fr 1fr;font-size:10px;gap:16px}.section{padding:50px 0}.tool-grid{grid-template-columns:repeat(2,1fr)}.feature-panel{grid-template-columns:1fr;gap:32px}.guide-grid{gap:16px}.guide-art{height:150px}.guide-card h3{font-size:16px}.footer-links{gap:32px}.calculator-layout{grid-template-columns:1fr}.article-layout{grid-template-columns:1fr}.article-aside{position:static;order:-1}.article-aside nav{display:flex;flex-wrap:wrap}.admin-layout{grid-template-columns:180px minmax(0,1fr)}.admin-sidebar{padding:25px 14px}.admin-sidebar .brand-name{font-size:13px}.admin-sidebar .brand-subtitle{display:none}.stat-grid{grid-template-columns:repeat(2,1fr)}.admin-two-col{grid-template-columns:1fr}}
@media(max-width:540px){.container,.wrap{width:calc(100% - 32px)}.header-actions{gap:6px}.language-select{font-size:10px;width:47px}.header-actions .icon-button{width:30px;height:30px}.hero{padding-top:38px}.hero-copy h1{font-size:2.75rem}.lead{font-size:15px}.eyebrow{font-size:9px;margin-bottom:19px}.hero-actions{gap:16px;align-items:start;flex-direction:column}.hero-actions .button{width:100%}.hero-note{font-size:10px;line-height:1.6}.workspace-top{padding:14px 16px}.workspace-meta{padding:14px 16px 0}.drawing{padding:12px 10px}.workspace-results{padding:16px;gap:8px}.metric strong{font-size:19px}.metric span{font-size:9px}.workspace-foot{padding:12px 16px}.drawing-legend{padding-inline:16px}.proof-inner{gap:13px}.proof-inner span{gap:7px;line-height:1.4}.proof-inner .icon{width:15px}.section-heading{align-items:start;flex-direction:column;gap:12px}.section-heading h2{font-size:1.8rem}.section-heading p{font-size:13px}.category-tabs{gap:6px}.category-tabs button{font-size:10px;padding:7px 10px}.tool-grid{grid-template-columns:1fr}.tool-card{min-height:185px;padding:22px}.card-top{margin-bottom:17px}.feature-panel{padding:28px;border-radius:10px}.guide-grid{grid-template-columns:1fr;gap:30px}.guide-art{height:210px}.guide-card h3{font-size:20px}.footer-top{flex-direction:column;gap:32px}.footer-links{justify-content:space-between;gap:20px}.footer-bottom{flex-direction:column;gap:16px}.page-header{padding-top:28px}.page-header h1{font-size:2rem}.breadcrumb{font-size:10px;margin-bottom:20px}.panel,.card{padding:20px}.form-grid{gap:16px}.result-value{font-size:38px}.form-actions .button{flex:1}.article-layout{gap:24px}.article-body h2{font-size:24px}.article-body{font-size:14px}.planner-header{align-items:start;flex-direction:column}.admin-layout{grid-template-columns:1fr}.admin-sidebar{padding:17px 16px}.admin-sidebar .brand{margin:0}.admin-nav{display:flex;overflow:auto;gap:6px;margin-top:16px}.admin-nav a{padding:8px 12px;white-space:nowrap}.admin-nav-label{display:none}.admin-main{padding:24px 16px}.admin-topbar{margin-bottom:25px}.admin-title{align-items:start;flex-direction:column}.stat-grid{gap:10px}.stat-card{padding:16px}.stat-card strong{font-size:26px}.toast{bottom:16px;left:16px;right:16px}.table-scroll table{min-width:500px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}
@media print{.site-header,.site-footer,.form-actions,.admin-sidebar,.category-tabs,.hero-actions,.theme-select,.toast{display:none!important}body{background:#fff;color:#17232d}.container,.wrap{width:100%}.panel,.card,.workspace{box-shadow:none;break-inside:avoid}.calculator-layout,.article-layout{display:block}.article-aside{display:none}a{color:inherit}.section{padding:20px 0}.drawing{print-color-adjust:exact}.notice{background:#eef3ef;color:#17232d}}

/* Revision 2: bright workshop identity, requested by the user. */
:root{--graphite:#252b2e;--navy:#30383b;--warm:#fcfbf7;--stone:#eeede6;--bg:var(--warm);--surface:#fff;--surface-alt:#f4f3ed;--ink:#252b2e;--muted:#68716f;--border:#e4e4da;--accent:#856105;--accent-hover:#6e5108;--accent-soft:#fff5d4;--action:#f4c430;--action-hover:#e7b723;--on-action:#252b2e;--copper:#a97c17;--chart-grid:#e6e3d6;--chart-sheet:#f2eddf;--chart-part:#e5ca7d;--chart-part-2:#ceb76f;--chart-waste:#f2e5c9;--chart-line:#756235}
:root[data-theme=dark]{--bg:#1b2022;--surface:#262d30;--surface-alt:#30383b;--ink:#f4f3ed;--muted:#b4bcb8;--border:#454c4c;--accent:#ffd76f;--accent-hover:#ffe297;--accent-soft:#3b3422;--action:#f4c430;--action-hover:#ffd350;--on-action:#252b2e;--copper:#dfb953;--chart-grid:#454b43;--chart-sheet:#3b3c32;--chart-part:#a58a42;--chart-part-2:#8a7847;--chart-waste:#605740;--chart-line:#f0d78c}
.button:not(.secondary):not(.button-secondary),.btn:not(.secondary),button.primary{background:var(--action);color:var(--on-action)}.button:not(.secondary):not(.button-secondary):hover,.btn:not(.secondary):hover,button.primary:hover{background:var(--action-hover);color:var(--on-action)}.tool-icon{color:var(--accent);background:var(--accent-soft)}.brand-symbol{color:var(--ink)}.icon-button{background:var(--surface)}.category-tabs button[aria-pressed=true]{background:var(--action);border-color:var(--action);color:var(--on-action)}.eyebrow{font-weight:650;letter-spacing:.12em}.hero-copy h1 em{color:var(--ink)}