:root {
  --bg: #f7f8f6;
  --surface: #ffffff;
  --surface-2: #eef3ef;
  --text: #18211d;
  --muted: #607067;
  --line: rgba(23, 53, 44, 0.12);
  --forest-900: #102720;
  --forest-800: #17352c;
  --forest-700: #21473a;
  --forest-600: #2d5a49;
  --slate-700: #405059;
  --slate-600: #56656e;
  --slate-500: #78868f;
  --orange-500: #ef7d32;
  --orange-600: #df6c1f;
  --orange-100: #fff1e7;
  --safe: #1f8f51;
  --safe-bg: #eaf8ef;
  --danger: #c73a35;
  --danger-bg: #fff0ef;
  --info-bg: #eef5ff;
  --info: #265fb2;
  --shadow-sm: 0 10px 30px rgba(16, 39, 32, 0.06);
  --shadow-md: 0 16px 40px rgba(16, 39, 32, 0.10);
  --shadow-lg: 0 24px 60px rgba(16, 39, 32, 0.14);
  --radius-sm: 14px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 36px;
  --container: 1200px;
  --transition: 220ms ease;
}
*,:before,:after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Inter",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:radial-gradient(circle at top right, rgba(239,125,50,.08), transparent 25%),linear-gradient(180deg,#fbfcfb 0%,#f4f7f4 100%);color:var(--text);line-height:1.6}
a{color:inherit;text-decoration:none} img{max-width:100%;display:block} button,input,select,textarea{font:inherit}
.skip-link{position:absolute;left:-9999px;top:0}.skip-link:focus{left:1rem;top:1rem;background:var(--forest-800);color:#fff;padding:.75rem 1rem;border-radius:10px;z-index:9999}
.container{width:min(100% - 2rem,var(--container));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:1000;backdrop-filter:blur(16px);background:rgba(247,248,246,.82);border-bottom:1px solid rgba(23,53,44,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:78px}
.brand{display:inline-flex;align-items:center;gap:.85rem;font-weight:800;letter-spacing:-.02em}.brand-mark{width:44px;height:44px;display:grid;place-items:center;border-radius:14px;background:linear-gradient(135deg,var(--forest-800),var(--forest-600));color:#fff;box-shadow:var(--shadow-sm);font-size:.95rem}.brand-text{font-size:1rem;color:var(--forest-900)}
.primary-nav{display:flex;align-items:center;gap:1.25rem}.primary-nav ul{display:flex;align-items:center;gap:1.25rem;list-style:none;margin:0;padding:0}.primary-nav a{color:var(--slate-700);font-weight:600;transition:color var(--transition)}.primary-nav a:hover,.primary-nav a:focus-visible{color:var(--forest-800)}
.nav-cta{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:.75rem 1.1rem;border-radius:999px;background:var(--orange-500);color:#fff!important;box-shadow:0 12px 24px rgba(239,125,50,.22)}.nav-cta:hover,.nav-cta:focus-visible{background:var(--orange-600)}
.menu-toggle{display:none;width:48px;height:48px;border:1px solid var(--line);background:#fff;border-radius:14px;padding:0;cursor:pointer}.menu-toggle span{display:block;width:20px;height:2px;background:var(--forest-900);margin:5px auto;border-radius:2px}
.hero-section{position:relative;overflow:hidden;padding:5rem 0 4rem}.hero-bg{position:absolute;inset:0;pointer-events:none;background:radial-gradient(circle at 12% 20%, rgba(45,90,73,.18), transparent 22%),radial-gradient(circle at 85% 25%, rgba(239,125,50,.18), transparent 20%),linear-gradient(180deg, rgba(255,255,255,.4), rgba(255,255,255,0))}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:2rem;align-items:center}
.eyebrow,.section-kicker,.card-label{text-transform:uppercase;letter-spacing:.16em;font-size:.78rem;font-weight:800;color:var(--orange-600)}
.hero-copy h1{margin:.75rem 0 1rem;font-size:clamp(2.6rem,5vw,5.2rem);line-height:.96;letter-spacing:-.05em;color:var(--forest-900);max-width:12ch}.hero-subheadline{max-width:62ch;margin:0 0 1.8rem;font-size:1.08rem;color:var(--slate-700)}
.hero-actions{display:flex;flex-wrap:wrap;gap:.9rem;margin-bottom:1.6rem}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:54px;padding:.95rem 1.4rem;border-radius:999px;font-weight:700;transition:transform var(--transition),background var(--transition),border-color var(--transition),color var(--transition),box-shadow var(--transition)}.btn:hover,.btn:focus-visible{transform:translateY(-2px)}.btn-primary{background:linear-gradient(135deg,var(--orange-500),#f59a4f);color:#fff;box-shadow:0 16px 30px rgba(239,125,50,.24)}.btn-primary:hover,.btn-primary:focus-visible{background:linear-gradient(135deg,var(--orange-600),var(--orange-500))}.btn-secondary{background:rgba(255,255,255,.74);color:var(--forest-900);border:1px solid rgba(23,53,44,.12);box-shadow:var(--shadow-sm)}
.hero-trust{display:flex;flex-wrap:wrap;gap:.75rem}.trust-pill{padding:.75rem 1rem;border-radius:999px;background:rgba(255,255,255,.72);border:1px solid rgba(23,53,44,.08);color:var(--forest-800);font-weight:600;box-shadow:var(--shadow-sm)}
.hero-panel{display:flex;justify-content:flex-end}.hero-panel-card{width:100%;max-width:470px;padding:1.5rem;border-radius:var(--radius-xl);background:linear-gradient(180deg,rgba(255,255,255,.92),rgba(255,255,255,.82));border:1px solid rgba(23,53,44,.10);box-shadow:var(--shadow-lg)}
.panel-top{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1.25rem}.panel-badge{display:inline-flex;padding:.45rem .8rem;border-radius:999px;background:var(--forest-800);color:#fff;font-size:.84rem;font-weight:700}.panel-status{color:var(--orange-600);font-size:.92rem;font-weight:800}
.utility-preview-list{display:grid;gap:1rem}.utility-preview-item{display:grid;grid-template-columns:56px 1fr;gap:1rem;align-items:start;padding:1rem;border-radius:20px;background:linear-gradient(180deg,#ffffff,#f7faf8);border:1px solid rgba(23,53,44,.08)}.utility-icon{width:56px;height:56px;display:grid;place-items:center;border-radius:18px;background:linear-gradient(135deg,var(--orange-100),#fff);font-size:1.4rem}.utility-preview-item h2{margin:0 0 .25rem;font-size:1rem;color:var(--forest-900)}.utility-preview-item p{margin:0;color:var(--muted);font-size:.94rem}
.categories-section,.about-section,.page-tools{padding:2rem 0 5rem}.section-heading{max-width:760px;margin-bottom:2rem}.section-heading h2,.about-section h2,.page-hero h1{margin:.45rem 0 .8rem;font-size:clamp(1.9rem,3vw,3rem);line-height:1.08;letter-spacing:-.04em;color:var(--forest-900)}.section-heading p,.about-copy p,.page-hero p{color:var(--slate-700);margin:0}
.category-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1.25rem}.category-card{display:flex;flex-direction:column;height:100%;padding:1.4rem;border-radius:var(--radius-lg);background:linear-gradient(180deg,rgba(255,255,255,.95),rgba(248,250,248,.98));border:1px solid rgba(23,53,44,.08);box-shadow:var(--shadow-md);transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition)}.category-card:hover,.category-card:focus-within{transform:translateY(-6px);border-color:rgba(23,53,44,.16);box-shadow:0 22px 50px rgba(16,39,32,.14)}
.category-card-top{display:flex;align-items:center;gap:1rem}.category-icon-wrap{width:60px;height:60px;display:grid;place-items:center;border-radius:20px;background:linear-gradient(135deg,var(--forest-800),var(--forest-600));color:#fff;box-shadow:var(--shadow-sm);font-size:1.5rem}.category-card h3{margin:.15rem 0 0;font-size:1.35rem;color:var(--forest-900)}.category-description{margin:1rem 0 1.1rem;color:var(--slate-700);font-size:.98rem}
.tool-links{list-style:none;padding:0;margin:0 0 1.3rem;display:grid;gap:.8rem}.tool-links li a{display:inline-flex;width:100%;align-items:center;justify-content:space-between;gap:1rem;padding:.9rem 1rem;border-radius:16px;background:var(--surface);border:1px solid rgba(23,53,44,.08);color:var(--forest-800);font-weight:600;transition:background var(--transition),border-color var(--transition),transform var(--transition)}.tool-links li a::after{content:"→";color:var(--orange-600);font-weight:800}.tool-links li a:hover,.tool-links li a:focus-visible{background:#fbfcfb;border-color:rgba(239,125,50,.28);transform:translateX(2px)}
.card-button{margin-top:auto;display:inline-flex;align-items:center;justify-content:center;min-height:54px;padding:1rem 1.1rem;border-radius:18px;background:linear-gradient(135deg,var(--forest-800),var(--forest-600));color:#fff;font-weight:800;text-align:center;box-shadow:0 16px 30px rgba(23,53,44,.18);transition:transform var(--transition),opacity var(--transition)}.card-button:hover,.card-button:focus-visible{transform:translateY(-2px);opacity:.96}
.page-hero{padding:4.5rem 0 2rem}.page-chip{display:inline-block;padding:.5rem .9rem;border-radius:999px;background:var(--orange-100);color:var(--orange-600);font-weight:800;margin-bottom:1rem;text-transform:uppercase;letter-spacing:.14em;font-size:.75rem}
.page-tools-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.tool-tile{padding:1.2rem;background:#fff;border:1px solid rgba(23,53,44,.08);border-radius:20px;box-shadow:var(--shadow-sm)}.tool-tile h2{margin:0 0 .4rem;font-size:1.1rem;color:var(--forest-900)}.tool-tile p{margin:0;color:var(--slate-700)}.tile-link{transition:transform var(--transition),border-color var(--transition),box-shadow var(--transition)}.tile-link:hover,.tile-link:focus-visible{transform:translateY(-4px);border-color:rgba(239,125,50,.3);box-shadow:var(--shadow-md)}
.site-footer{padding:1rem 0 2rem;border-top:1px solid rgba(23,53,44,.08)}.footer-inner{display:flex;justify-content:space-between;gap:2rem;padding:2rem 0 1rem}.footer-brand{font-size:1.05rem;font-weight:800;color:var(--forest-900)}.footer-copy{color:var(--slate-700);max-width:40ch}.footer-links{display:flex;flex-wrap:wrap;gap:1rem 1.25rem;align-content:start}.footer-links a{color:var(--slate-700);font-weight:600}.footer-links a:hover,.footer-links a:focus-visible{color:var(--forest-800)}.footer-bottom{padding-top:1rem;color:var(--slate-600);font-size:.95rem}

/* calculator pages */
.tool-page{padding:3rem 0 5rem}.tool-hero{margin-bottom:1.5rem}.breadcrumbs{display:flex;flex-wrap:wrap;gap:.4rem;color:var(--slate-600);font-size:.95rem;margin-bottom:1rem}.breadcrumbs a{font-weight:600}.breadcrumbs a:hover{color:var(--forest-800)}.breadcrumbs span:last-child{color:var(--forest-900)}
.tool-shell{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:1.25rem;align-items:start}.panel{background:linear-gradient(180deg,rgba(255,255,255,.95),rgba(248,250,248,.98));border:1px solid rgba(23,53,44,.08);box-shadow:var(--shadow-md);border-radius:var(--radius-lg);padding:1.35rem}.panel h2,.panel h3{margin:.1rem 0 .9rem;color:var(--forest-900);letter-spacing:-.03em}.panel p{margin:.4rem 0;color:var(--slate-700)}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.field{display:flex;flex-direction:column;gap:.4rem}.field label{font-weight:700;color:var(--forest-900);font-size:.95rem}.field small{color:var(--slate-600)}
.input, .select, .checkbox-card input + span, .load-row input, .field input, .field select {width:100%}
.field input,.field select{min-height:56px;padding:0 1rem;border-radius:16px;border:1px solid rgba(23,53,44,.14);background:#fff;color:var(--text);outline:none;transition:border-color var(--transition),box-shadow var(--transition),transform var(--transition)}
.field input:focus,.field select:focus{border-color:rgba(239,125,50,.75);box-shadow:0 0 0 4px rgba(239,125,50,.12)}
.helper-text{font-size:.92rem;color:var(--slate-600)}
.kpi-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.kpi{padding:1rem;border-radius:20px;background:#fff;border:1px solid rgba(23,53,44,.08)}.kpi-label{display:block;color:var(--slate-600);font-size:.92rem;font-weight:600}.kpi-value{display:block;margin-top:.35rem;font-size:1.55rem;line-height:1.1;font-weight:800;color:var(--forest-900);letter-spacing:-.04em}.kpi-sub{display:block;margin-top:.3rem;font-size:.9rem;color:var(--slate-600)}
.note{padding:1rem;border-radius:18px;background:var(--surface-2);border:1px solid rgba(23,53,44,.08)}.disclaimer{padding:1rem;border-radius:18px;background:var(--orange-100);border:1px solid rgba(239,125,50,.18);color:#8b4d1a}
.status-pill{display:inline-flex;align-items:center;justify-content:center;padding:.65rem 1rem;border-radius:999px;font-weight:800;font-size:.95rem}.status-pill.safe{background:var(--safe-bg);color:var(--safe)}.status-pill.danger{background:var(--danger-bg);color:var(--danger)}
.stack{display:grid;gap:1rem}.load-table{display:grid;gap:.8rem}.load-row{display:grid;grid-template-columns:1.5fr 1fr 1fr 56px;gap:.75rem;align-items:end}.icon-button,.secondary-button{border:none;cursor:pointer}.icon-button{width:56px;height:56px;border-radius:16px;background:#fff3f1;color:var(--danger);font-size:1.6rem;line-height:1}.secondary-button{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:.9rem 1rem;border-radius:16px;background:var(--forest-900);color:#fff;font-weight:700;box-shadow:var(--shadow-sm)}.secondary-button:hover,.secondary-button:focus-visible{opacity:.96;transform:translateY(-1px)}
.option-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.85rem}.checkbox-card{position:relative}.checkbox-card input{position:absolute;opacity:0;inset:0;cursor:pointer}.checkbox-card span{display:block;padding:1rem 1rem;border-radius:20px;background:#fff;border:1px solid rgba(23,53,44,.1);min-height:100%;transition:border-color var(--transition),box-shadow var(--transition),transform var(--transition)}.checkbox-card strong{display:block;color:var(--forest-900);font-size:1rem}.checkbox-card em{display:block;margin-top:.3rem;color:var(--slate-600);font-style:normal;font-size:.92rem}.checkbox-card input:checked + span{border-color:rgba(239,125,50,.5);box-shadow:0 0 0 4px rgba(239,125,50,.12);transform:translateY(-2px)}
.conversion-grid{display:grid;gap:1rem}.conversion-card{padding:1rem;border-radius:20px;background:#fff;border:1px solid rgba(23,53,44,.08)}.conversion-card h3{margin:0 0 .75rem}.formula{display:block;padding:.75rem 1rem;border-radius:14px;background:var(--surface-2);color:var(--forest-700);font-weight:700;font-size:.95rem}
.result-list{display:grid;gap:.85rem}.result-item{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:.9rem 1rem;background:#fff;border:1px solid rgba(23,53,44,.08);border-radius:16px}.result-item strong{color:var(--forest-900)}.result-item span{font-weight:800;color:var(--forest-900)}
.wide{grid-column:1 / -1}
@media (max-width:1080px){.hero-grid,.tool-shell,.category-grid{grid-template-columns:1fr 1fr}.hero-copy h1{max-width:14ch}}
@media (max-width:820px){.menu-toggle{display:inline-block}.primary-nav{position:absolute;top:calc(100% + .5rem);right:1rem;left:1rem;display:none;flex-direction:column;align-items:stretch;padding:1rem;border-radius:20px;background:rgba(255,255,255,.98);border:1px solid rgba(23,53,44,.08);box-shadow:var(--shadow-lg)}.primary-nav.open{display:flex}.primary-nav ul{flex-direction:column;align-items:stretch}.primary-nav ul li a,.nav-cta{display:block;width:100%;padding:.85rem .95rem;border-radius:14px}.nav-cta{text-align:center;margin-top:.25rem}.footer-inner,.tool-shell,.hero-grid,.category-grid,.page-tools-grid{grid-template-columns:1fr;display:grid}.form-grid,.kpi-grid,.option-grid{grid-template-columns:1fr}.load-row{grid-template-columns:1fr 1fr}.load-row .field:first-child{grid-column:1 / -1}.icon-button{width:100%}}
@media (max-width:640px){.hero-section{padding-top:4rem}.hero-copy h1{font-size:clamp(2.2rem,11vw,3.4rem);max-width:11ch}.hero-subheadline{font-size:1rem}.hero-actions,.hero-trust{flex-direction:column;align-items:stretch}.btn,.trust-pill,.card-button{width:100%}.category-card,.hero-panel-card,.panel{padding:1.1rem}.header-inner{min-height:72px}.brand-text{font-size:.92rem}.tool-page{padding-top:2rem}.load-row{grid-template-columns:1fr}.result-item{align-items:flex-start;flex-direction:column}}

.issue-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem}.issue-chip{border:none;cursor:pointer;min-height:52px;padding:.95rem 1rem;border-radius:16px;background:#fff;border:1px solid rgba(23,53,44,.12);font-weight:700;color:var(--forest-800);transition:transform var(--transition),border-color var(--transition),box-shadow var(--transition)}.issue-chip:hover,.issue-chip:focus-visible{transform:translateY(-2px);border-color:rgba(239,125,50,.4)}.issue-chip.active{background:linear-gradient(135deg,var(--forest-800),var(--forest-600));color:#fff;box-shadow:var(--shadow-sm);border-color:transparent}.guide-card{padding:1.1rem;border-radius:24px;background:linear-gradient(135deg,rgba(23,53,44,.98),rgba(45,90,73,.96));color:#fff;box-shadow:var(--shadow-md)}.guide-card h3{color:#fff;margin:.35rem 0 .45rem}.guide-card p{color:rgba(255,255,255,.85)}.guide-badge{display:inline-flex;padding:.45rem .8rem;border-radius:999px;background:rgba(255,255,255,.14);color:#fff;font-size:.82rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.maintenance-list{display:grid;gap:1rem}.maintenance-item{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:1rem;align-items:center;padding:1rem;border-radius:22px;background:#fff;border:1px solid rgba(23,53,44,.1);transition:border-color var(--transition),box-shadow var(--transition),transform var(--transition)}.maintenance-item h3{margin:0 0 .2rem}.maintenance-item p{margin:0;color:var(--slate-700)}.maintenance-controls{display:grid;gap:.6rem}.maintenance-controls input{min-height:52px;padding:0 1rem;border-radius:16px;border:1px solid rgba(23,53,44,.14)}.task-status{display:inline-flex;align-items:center;justify-content:center;padding:.55rem .85rem;border-radius:999px;font-weight:700;font-size:.9rem}.maintenance-item.current{border-color:rgba(31,143,81,.22);background:#fbfffc}.maintenance-item.current .task-status{background:var(--safe-bg);color:var(--safe)}.maintenance-item.overdue{border-color:rgba(199,58,53,.24);background:#fff6f5}.maintenance-item.overdue .task-status{background:var(--danger-bg);color:var(--danger)}.maintenance-item.missing .task-status{background:var(--surface-2);color:var(--slate-700)}
.checklist{display:grid;gap:.8rem}.check-item{display:flex;align-items:flex-start;gap:.85rem;padding:1rem;border-radius:18px;background:#fff;border:1px solid rgba(23,53,44,.08);transition:border-color var(--transition),background var(--transition),opacity var(--transition)}.check-item input{margin-top:.18rem;width:20px;height:20px;accent-color:var(--forest-700)}.check-item span{font-weight:600;color:var(--forest-900)}.check-item.completed{background:var(--surface-2);border-color:rgba(23,53,44,.14)}.check-item.completed span{text-decoration:line-through;color:var(--slate-600)}
@media (max-width:820px){.issue-grid{grid-template-columns:1fr}.maintenance-item{grid-template-columns:1fr}}