:root{--paper:#faf7f0;--card:#fffdf7;--ink:#221d14;--ink-soft:#5d5546;--accent:#1e5c47;--accent-dark:#143d2f;--accent-soft:#e9efe6;--rust:#a34a08;--line:#ddd5c2;--line-dark:#221d14;--radius:10px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.65;font-size:16.5px;overflow-x:clip}
h1,h2,h3,.stat-num,.logo,.result .num{font-family:Georgia,'Iowan Old Style','Times New Roman',serif;font-weight:700}
.container{max-width:1060px;margin:0 auto;padding-left:22px;padding-right:22px}
a{color:var(--accent)}
img,svg{max-width:100%;height:auto}
a,button,summary,input,textarea{touch-action:manipulation}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
[id]{scroll-margin-top:84px}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

/* ===== Header ===== */
header{background:var(--paper);border-top:4px solid var(--accent);border-bottom:1px solid var(--line-dark);position:sticky;top:0;z-index:50}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:12px 22px;max-width:1060px;margin:0 auto;gap:12px;min-height:60px}
.logo{font-size:1.18rem;color:var(--ink);text-decoration:none;letter-spacing:-.01em;white-space:nowrap;padding:8px 0}
.logo span{color:var(--accent);font-style:italic}
nav{display:flex;align-items:center;gap:0}
nav a{text-decoration:none;color:var(--ink);font-size:.88rem;font-weight:600;padding:11px 11px;border-bottom:2px solid transparent}
nav a:hover{border-bottom-color:var(--rust);color:var(--ink)}
nav a.cta{background:var(--ink);color:var(--paper);padding:11px 18px;margin-left:10px;border:none;border-radius:0}
nav a.cta:hover{background:var(--accent-dark);color:#fff}
.menu-btn{display:none;background:transparent;border:1.5px solid var(--ink);border-radius:0;min-width:44px;min-height:44px;padding:8px 13px;font-size:1.25rem;line-height:1;color:var(--ink);cursor:pointer;font-family:inherit}
.menu-btn:active{background:var(--accent-soft)}

/* ===== Hero ===== */
.hero{padding-top:64px;padding-bottom:48px;text-align:left}
.eyebrow{display:inline-block;font-size:.74rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--rust);margin-bottom:18px;border-bottom:2px solid var(--rust);padding-bottom:6px}
h1{font-size:clamp(2.1rem,5.6vw,3.6rem);line-height:1.08;letter-spacing:-.01em;max-width:820px;margin:0 0 20px}
.hero p.lede{font-size:clamp(1.02rem,2.4vw,1.2rem);color:var(--ink-soft);max-width:640px;margin:0 0 30px}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;font-weight:700;padding:15px 28px;border-radius:0;font-size:.98rem;border:2px solid var(--accent);cursor:pointer;letter-spacing:.01em}
.btn:hover{background:var(--accent-dark);border-color:var(--accent-dark)}
.btn:active{transform:translateY(1px)}
.btn.ghost{background:transparent;color:var(--ink);border:2px solid var(--ink);margin-left:12px}
.btn.ghost:hover{background:var(--ink);color:var(--paper)}
.hero-art{max-width:620px;margin:44px 0 0;display:block}

/* ===== Stats bar ===== */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:0;padding:0;margin:28px 0 8px;border-top:2px solid var(--ink);border-bottom:1px solid var(--line)}
.stat{text-align:left;padding:22px 18px 22px 0;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat+.stat{padding-left:18px}
.stat-num{font-size:2.3rem;color:var(--accent);letter-spacing:-.01em}
.stat small{color:var(--ink-soft);font-size:.8rem;display:block;margin-top:4px;text-transform:uppercase;letter-spacing:.06em;font-weight:600}

/* ===== Sections & cards ===== */
.section{padding-top:54px;padding-bottom:54px}
.section h2{font-size:clamp(1.5rem,3.4vw,2rem);letter-spacing:-.01em;margin-bottom:10px}
.section .sub{color:var(--ink-soft);max-width:620px;margin-bottom:34px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;transition:border-color .15s}
.card:hover{border-color:var(--accent)}
.card .icon{width:46px;height:46px;border:1.5px solid var(--accent);border-radius:8px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;background:transparent}
.card .icon svg{width:24px;height:24px;stroke:var(--accent);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:1.22rem;margin-bottom:10px}
.card p{color:var(--ink-soft);font-size:.95rem;flex:1}
.card .tag{font-size:.7rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--rust);margin-bottom:12px}
.card a.more{margin-top:18px;font-weight:700;text-decoration:underline;text-underline-offset:3px;font-size:.93rem;padding:6px 0;display:inline-block;color:var(--ink)}
.card a.more:hover{color:var(--accent)}

/* ===== Article pages ===== */
article.page{max-width:740px;margin:0 auto;padding:44px 22px 56px}
.page-icon{width:56px;height:56px;border:1.5px solid var(--accent);border-radius:8px;display:flex;align-items:center;justify-content:center;margin:20px 0 10px}
.page-icon svg{width:30px;height:30px;stroke:var(--accent);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
article.page h1{text-align:left;margin:8px 0 16px;font-size:clamp(1.7rem,4.6vw,2.6rem)}
article.page .lede{font-size:1.08rem;color:var(--ink-soft);margin-bottom:26px}
article.page h2{font-size:clamp(1.3rem,3vw,1.55rem);margin:40px 0 12px;padding-top:18px;border-top:1px solid var(--line)}
article.page h3{font-size:1.08rem;margin:26px 0 8px;font-family:-apple-system,BlinkMacSystemFont,sans-serif;font-weight:700}
article.page p{margin-bottom:16px}
article.page ul,article.page ol{margin:0 0 16px 22px}
article.page li{margin-bottom:8px}
.breadcrumbs{font-size:.82rem;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.08em;font-weight:600}
.breadcrumbs a{text-decoration:none;padding:6px 0;display:inline-block}
.callout{background:#f3eedf;border-left:3px solid var(--rust);padding:18px 20px;margin:24px 0}
.callout strong{color:var(--ink)}

/* ===== FAQ ===== */
.faq details{border-bottom:1px solid var(--line);padding:4px 0;margin:0}
.faq details:first-of-type{border-top:2px solid var(--ink)}
.faq summary{font-weight:700;cursor:pointer;padding:15px 0;min-height:44px;display:flex;align-items:center;list-style-position:outside}
.faq summary:hover{color:var(--accent)}
.faq details p{margin:0 0 16px;color:var(--ink-soft)}

/* ===== Steps ===== */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:0;counter-reset:step;border-top:2px solid var(--ink)}
.step{padding:22px 18px 22px 0;border-right:1px solid var(--line)}
.step:last-child{border-right:none}
.step+.step{padding-left:18px}
.step::before{counter-increment:step;content:"0" counter(step);display:block;font-family:Georgia,serif;font-size:1.5rem;font-weight:700;color:var(--rust);margin-bottom:8px}
.step h3{font-size:1.05rem;margin-bottom:6px}
.step p{font-size:.92rem;color:var(--ink-soft)}

/* ===== Contact ===== */
.contact{background:var(--accent-dark);color:#fff;border-radius:0;padding:48px 36px;text-align:center;margin:40px 0;border:none}
.contact h2{color:#fff}
.contact p{color:#cfdcd2;max-width:560px;margin:10px auto 26px}
form{max-width:480px;margin:0 auto;text-align:left}
form label{display:block;font-size:.82rem;font-weight:700;margin:14px 0 5px;text-transform:uppercase;letter-spacing:.06em}
form input,form textarea{width:100%;padding:13px;border-radius:0;border:1px solid #4e7263;background:#fff;color:var(--ink);font-size:1rem;font-family:inherit;min-height:48px}
form textarea{min-height:84px}
form input:focus,form textarea:focus{outline:3px solid #7fc2a8}
form button{margin-top:22px;width:100%;min-height:52px;background:#fff;color:var(--accent-dark);border-color:#fff}
form button:hover{background:#e9efe6;border-color:#e9efe6;color:var(--accent-dark)}

/* ===== Calculator tools ===== */
.tool{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;margin-bottom:22px}
.tool h2{margin-top:0!important;border-top:none!important;padding-top:0!important}
.tool .grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.tool label{display:block;font-size:.8rem;font-weight:700;margin:12px 0 5px;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.04em}
.tool input[type=number]{width:100%;padding:12px;border-radius:0;border:1px solid var(--ink);background:#fff;color:var(--ink);font-size:1.1rem;font-weight:600;min-height:48px;font-family:inherit}
.tool input[type=number]:focus{outline:3px solid var(--accent)}
.tool input[type=range]{width:100%;accent-color:var(--accent);height:44px}
.tool .range-val{font-weight:800;color:var(--accent)}
.result{background:var(--accent-soft);border:none;border-top:2px solid var(--accent);padding:16px 18px;margin-top:18px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.result .label{font-weight:700;color:var(--ink-soft);font-size:.82rem;text-transform:uppercase;letter-spacing:.06em}
.result .num{font-size:1.8rem;color:var(--accent-dark);font-variant-numeric:tabular-nums}
.result.total{background:var(--accent-dark);border-top-color:var(--accent-dark)}
.result.total .label{color:#cfdcd2}
.result.total .num{color:#9fdcbf;font-size:2.3rem}
.note{font-size:.85rem;color:var(--ink-soft);margin-top:10px}

/* ===== Benchmark table ===== */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:18px 0 26px;border:1px solid var(--line)}
table.bench{width:100%;border-collapse:collapse;font-size:.94rem;min-width:520px;background:var(--card)}
table.bench th{text-align:left;font-size:.74rem;text-transform:uppercase;letter-spacing:.08em;color:var(--paper);background:var(--ink);padding:11px 14px}
table.bench td{border-bottom:1px solid var(--line);padding:11px 14px}
table.bench tr:last-child td{border-bottom:none}
table.bench td:last-child,table.bench th:last-child{text-align:right;white-space:nowrap}
table.bench tr.hl td{background:var(--accent-soft);font-weight:700}

/* ===== Photos ===== */
.photo{width:100%;aspect-ratio:16/7;object-fit:cover;border-radius:0;border:1px solid var(--line);display:block;margin:26px 0;background:var(--line)}
article.page .photo{aspect-ratio:16/8;margin:6px 0 26px}
.photo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:8px 0 10px}
.photo-grid img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;border:1px solid var(--line);display:block;background:var(--line)}

/* ===== Footer ===== */
footer{border-top:2px solid var(--ink);padding:32px 0;color:var(--ink-soft);font-size:.86rem;background:var(--paper)}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:18px;max-width:1060px;margin:0 auto;padding:0 22px}
footer a{color:var(--ink-soft);text-decoration:none;margin-right:10px;display:inline-block;padding:10px 4px 10px 0}
footer a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}

/* ===== Mobile ===== */
@media(max-width:880px){
  .menu-btn{display:block}
  nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--paper);border-bottom:2px solid var(--ink);flex-direction:column;align-items:stretch;padding:8px 18px 18px;gap:0}
  body.nav-open nav{display:flex}
  nav a{padding:14px 4px;font-size:1.02rem;min-height:48px;display:flex;align-items:center;border-bottom:1px solid var(--line)}
  nav a:hover{border-bottom-color:var(--line)}
  nav a.cta{margin:14px 0 0;justify-content:center;border-bottom:none}
}
@media(max-width:640px){
  body{font-size:16px}
  .container{padding-left:20px;padding-right:20px}
  .nav-wrap{padding:10px 16px}
  .hero{padding-top:40px;padding-bottom:34px}
  .hero p.lede{margin-bottom:24px}
  .hero-art{margin-top:30px}
  .btn{display:block;width:100%;text-align:center}
  .btn.ghost{margin:12px 0 0}
  .stats{grid-template-columns:1fr 1fr;margin-top:20px}
  .stat{padding:16px 12px 16px 0}
  .stat:nth-child(2n){border-right:none;padding-left:14px}
  .stat:nth-child(2){border-right:none}
  .stat-num{font-size:1.7rem}
  .stat small{font-size:.7rem}
  .section{padding-top:38px;padding-bottom:38px}
  .cards{gap:12px}
  .card{padding:20px}
  .steps{grid-template-columns:1fr 1fr;gap:0}
  .step{padding:16px 12px 16px 0}
  .step:nth-child(2n){border-right:none;padding-left:14px}
  article.page{padding:30px 20px 44px}
  .page-icon{width:48px;height:48px;margin-top:14px}
  .page-icon svg{width:26px;height:26px}
  .callout{padding:15px 16px}
  .contact{padding:34px 20px;margin:28px 0}
  .tool{padding:18px 14px;margin-bottom:16px}
  .result .num{font-size:1.45rem}
  .result.total .num{font-size:1.8rem}
  .photo{aspect-ratio:16/10;margin:18px 0}
  article.page .photo{aspect-ratio:16/10;margin:4px 0 20px}
  .photo-grid{grid-template-columns:1fr;gap:10px}
  .photo-grid img{aspect-ratio:16/8}
  .foot{flex-direction:column;gap:8px}
}
@media(max-width:400px){.stats{grid-template-columns:1fr}.stat{border-right:none}.steps{grid-template-columns:1fr}.step{border-right:none}}