:root{--ink:#2B2D31;--slate:#2B2D31;--slate2:#3a3d43;--muted:#64748b;--line:#e5e7eb;--bg:#f8fafc;--card:#fff;--acc:#F26B1D;--acc2:#C9530F;--accs:#FDEFE6;--r:14px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--acc2)}a:hover{color:#A8440B}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}main.wrap{padding-top:28px;padding-bottom:56px;min-height:60vh}
/* header */
.site-header{position:sticky;top:0;z-index:20;background:rgba(43,45,49,.96);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid #ffffff14}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:700;font-size:1.08rem;letter-spacing:-.01em;white-space:nowrap}
.logo b{color:var(--acc)}.logo:hover{color:#fff}.mark{flex:none}
.nav nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav nav a{color:#cbd5e1;text-decoration:none;font-weight:500;font-size:.93rem;padding:8px 12px;border-radius:8px}
.nav nav a:hover{color:#fff;background:#ffffff12}
.nav nav a.btn-nav{background:var(--acc);color:#2B2D31;font-weight:600;margin-left:6px}.nav nav a.btn-nav:hover{background:#FF9A5C}
/* hero */
.hero{margin:-28px calc(50% - 50vw) 36px;padding:72px 24px 64px;color:#fff;text-align:center;
 background:radial-gradient(900px 380px at 50% -10%,#F26B1D2e,transparent 70%),repeating-linear-gradient(135deg,#ffffff06 0 2px,transparent 2px 22px),linear-gradient(180deg,#2B2D31,#1e293b)}
.hero-in{max-width:820px;margin:0 auto}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:#FF9A5C;background:#F26B1D1f;border:1px solid #F26B1D66;padding:6px 12px;border-radius:999px}
.hero h1{font-size:clamp(2rem,4.6vw,3.3rem);line-height:1.1;letter-spacing:-.03em;margin:18px 0 14px;font-weight:800}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#FF9A5C,#F26B1D);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:#cbd5e1;font-size:1.1rem;margin:0 auto 26px;max-width:640px}
.search{display:flex;align-items:center;gap:10px;background:#fff;border-radius:14px;padding:6px 8px 6px 16px;box-shadow:0 20px 50px -12px #000a,0 0 0 4px #F26B1D2e;color:var(--muted);max-width:640px;margin:0 auto}
#q{flex:1;border:0;outline:0;font:inherit;font-size:1.05rem;padding:12px 4px;color:var(--ink);background:transparent;min-width:0}
.hchips{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:22px}
.hchip{color:#e2e8f0;text-decoration:none;font-weight:500;font-size:.92rem;padding:8px 14px;border-radius:999px;background:#ffffff10;border:1px solid #ffffff22;transition:.15s}
.hchip:hover{background:var(--acc);color:#2B2D31;border-color:var(--acc)}
/* headings */
.sh{font-size:1.35rem;letter-spacing:-.02em;margin:36px 0 14px}
.ph,main h1{font-size:clamp(1.7rem,3.4vw,2.4rem);letter-spacing:-.025em;line-height:1.15;margin:.2em 0 .4em}
.sub{color:var(--muted);font-size:1.05rem;margin-top:0}
.crumb{font-size:.88rem;color:var(--muted);margin:0 0 8px}.crumb a{color:var(--muted);text-decoration:none}.crumb a:hover{color:var(--acc2)}
/* grid & cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:16px}
.card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;transition:transform .15s,box-shadow .15s,border-color .15s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:0 14px 30px -12px #2B2D3133;border-color:#F26B1D}
.card h3{margin:0 0 4px;font-size:1.05rem;letter-spacing:-.01em}.card h3 a{color:var(--ink);text-decoration:none}
.card p{color:#475569;font-size:.93rem;margin:10px 0 14px;flex:1}
.stretch::after{content:"";position:absolute;inset:0;border-radius:var(--r)}
.ct{display:flex;gap:12px;align-items:center}
.ico{width:40px;height:40px;border-radius:10px;background:#f1f5f9;border:1px solid var(--line);padding:6px;flex:none;object-fit:contain}
.ico.lg{width:72px;height:72px;border-radius:16px;padding:12px}
.cf{display:flex;flex-wrap:wrap;gap:6px;align-items:center;border-top:1px dashed var(--line);padding-top:12px}
.price{color:var(--muted);font-size:.8rem;flex-basis:100%;margin-bottom:2px}
.tag{display:inline-block;font-size:.74rem;font-weight:600;color:#A8440B;background:var(--accs);border:1px solid #F9C9A8;padding:2px 9px;border-radius:999px}
.b{display:inline-block;font-size:.72rem;font-weight:600;padding:2px 8px;border-radius:6px}
.b-free{background:#dcfce7;color:#166534}.b-os{background:#e0e7ff;color:#3730a3}
a.card{color:inherit;text-decoration:none}
.secs .sec{padding:22px}.sic{color:var(--acc2);width:48px;height:48px;display:grid;place-items:center;background:var(--accs);border-radius:12px;margin-bottom:12px}
.secs .sec p{margin:0;flex:0;color:var(--muted)}
.guides-strip{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:24px 0 0;padding:14px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--r)}
.guides-strip a{text-decoration:none;font-weight:500;background:#f1f5f9;color:var(--ink);padding:6px 12px;border-radius:8px;font-size:.9rem}.guides-strip a:hover{background:var(--accs);color:var(--acc2)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 16px}
.chip{font:inherit;font-size:.86rem;font-weight:500;padding:7px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;color:#334155;cursor:pointer;text-decoration:none;transition:.15s}
.chip:hover{border-color:var(--acc);color:var(--acc2)}.chip.on{background:var(--slate);border-color:var(--slate);color:#fff}
.card.sponsor{display:block;text-align:center;border:2px dashed #FF9A5C;background:var(--accs);margin-bottom:16px;padding:14px}.card.sponsor:hover{transform:none}
.catlinks{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0 0 20px}.catlinks a{display:block;text-decoration:none;background:#fff;border:1px solid var(--line);padding:6px 12px;border-radius:999px;color:#334155;font-size:.9rem}.catlinks a:hover{border-color:var(--acc)}
/* tool page */
.tool-hero{display:flex;gap:22px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;margin-top:8px}
.tool-hero>div{flex:1}.tool-hero h1{margin:0 0 6px}.lead{font-size:1.12rem;color:#334155;margin:0 0 12px}
.badges{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.btn{display:inline-block;background:var(--acc);color:#2B2D31;font-weight:700;text-decoration:none;padding:12px 20px;border-radius:10px;white-space:nowrap;box-shadow:0 6px 16px -6px #F26B1D99}.btn:hover{background:#FF9A5C;color:#2B2D31}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;margin:16px 0 8px}
.facts>div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;display:flex;flex-direction:column;gap:2px;min-width:0}
.facts span{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600}.facts b{font-weight:600;overflow-wrap:anywhere}.facts small{color:var(--muted)}
main h2{font-size:1.4rem;letter-spacing:-.02em;margin:34px 0 14px}
/* prose: guides, about, compare */
.prose{max-width:780px}.prose p,.prose li{font-size:1.06rem;color:#334155;line-height:1.75}
.prose h2{margin-top:2.2em;padding-top:.4em;border-top:1px solid var(--line)}.prose h3{margin-top:1.6em}
.prose a{text-decoration-thickness:1px;text-underline-offset:3px}
.prose code{background:#f1f5f9;border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:.9em}
.prose pre{background:var(--slate);color:#e2e8f0;padding:16px;border-radius:12px;overflow:auto}.prose pre code{background:none;border:0;color:inherit}
.prose ul,.prose ol{padding-left:1.3em}.prose table{width:100%}
ol.best{list-style:none;padding:0;counter-reset:b;display:grid;gap:14px}
ol.best li{counter-increment:b;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px 18px 18px 64px;position:relative}
ol.best li::before{content:counter(b);position:absolute;left:18px;top:18px;width:32px;height:32px;border-radius:9px;background:var(--slate);color:var(--acc);font-weight:800;display:grid;place-items:center}
ol.best h3{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0}ol.best h3 a{color:var(--ink)}ol.best .ico{width:32px;height:32px;padding:4px}
.tblwrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:#fff}
table.cmp{border-collapse:collapse;width:100%;font-size:.95rem}table.cmp td,table.cmp th{border-bottom:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
table.cmp th{background:#f8fafc;font-weight:600}table.cmp tr:last-child td{border-bottom:0}
form label{display:block;margin:14px 0;font-weight:600;font-size:.95rem}
form input,form select,form textarea{width:100%;padding:11px 12px;font:inherit;border:1px solid #cbd5e1;border-radius:10px;margin-top:6px;background:#fff}
form input:focus,form select:focus,form textarea:focus{outline:0;border-color:var(--acc);box-shadow:0 0 0 3px #F26B1D2e}
form button,button[type=submit]{font:inherit;font-weight:700;background:var(--acc);border:0;padding:12px 20px;border-radius:10px;cursor:pointer}
.sponsor-box{border:2px dashed #94a3b8;background:var(--accs);padding:16px;border-radius:12px;margin:28px 0}.sp-label{font-weight:700;margin-top:0}
/* footer */
.site-footer{background:var(--slate);color:#94a3b8;margin-top:40px;padding-top:44px;font-size:.92rem}
.fgrid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
.site-footer h4{color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;margin:4px 0 12px}
.site-footer .fgrid div>a:not(.logo){display:block;color:#94a3b8;text-decoration:none;padding:3px 0}.site-footer a:hover{color:var(--acc)}
.site-footer p{max-width:320px}
.fbottom{border-top:1px solid #ffffff14;margin-top:32px;padding:18px 24px 28px;font-size:.82rem;color:#64748b}
@media (max-width:820px){.fgrid{grid-template-columns:1fr 1fr}.fgrid>div:first-child{grid-column:1/-1}}
@media (max-width:640px){
 .wrap{padding:0 16px}.nav{height:auto;flex-direction:column;align-items:flex-start;padding:12px 16px;gap:6px}
 .nav nav{gap:0;overflow-x:auto;flex-wrap:nowrap;width:100%}.nav nav a{padding:6px 10px;white-space:nowrap;font-size:.88rem}
 .site-header{position:static}.hero{padding:48px 16px 40px}.hero p{font-size:1rem}
 .tool-hero{flex-direction:column;padding:20px}.grid{grid-template-columns:1fr}
}
@media (max-width:640px){.grid.secs{grid-template-columns:1fr 1fr;gap:10px}.secs .sec{padding:14px}.sic{width:40px;height:40px;margin-bottom:8px}.secs .sec h3{font-size:.95rem}}
.rstrip{margin:36px 0 8px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}
.rs-h{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 20px}.rs-h .sh{margin:0}.rs-h p{margin:0;color:var(--muted);flex:1;min-width:260px}
.rs-g{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-top:18px}
.rs-i{border:1px solid var(--line);border-radius:12px;padding:14px;display:flex;flex-direction:column;gap:4px;background:var(--bg)}
.rs-ic{color:var(--acc2)}.rs-i b{font-size:1.8rem;letter-spacing:-.02em;line-height:1.1}.rs-i span:last-child{font-size:.86rem;color:#475569}
.rnotes{background:#fff;border:1px solid var(--line);border-left:4px solid var(--acc);border-radius:14px;padding:20px 22px;margin:20px 0}
.rn-h{display:flex;align-items:center;gap:10px;color:var(--acc2)}.rn-h h2{margin:0;color:var(--ink);font-size:1.2rem;flex:1}.rn-h a{font-size:.88rem}
.rnotes ul{list-style:none;padding:0;margin:14px 0 0;display:grid;gap:12px}
.rnotes li{display:flex;gap:12px;align-items:flex-start}.rnotes li>svg{flex:none;color:#16a34a;margin-top:2px}.rnotes li.warn>svg{color:#d97706}
.rnotes li div{display:flex;flex-direction:column;min-width:0}.rnotes li span{color:#475569;font-size:.93rem;overflow-wrap:anywhere}
.rn-f{margin:16px 0 0;padding-top:12px;border-top:1px dashed var(--line);font-size:.86rem;color:var(--muted)}
.trust{display:flex;gap:8px;align-items:center;font-size:.88rem!important;color:var(--muted)!important;margin:0 0 18px}.trust svg{color:var(--acc2);flex:none;width:18px;height:18px}
.mstats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:22px 0}.mstats div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;text-align:center}
.mstats b{display:block;font-size:1.8rem;color:var(--ink)}.mstats span{font-size:.82rem;color:var(--muted)}
@media (max-width:640px){.mstats{grid-template-columns:1fr 1fr}}

table.fit td,table.fit th{white-space:nowrap}table.fit td:first-child{white-space:normal;min-width:170px}.fit-y{color:#15803d;font-weight:600}.fit-t{color:#b45309}.fit-n{color:#94a3b8}.fit-legend{font-size:.93rem;color:#475569}.muted{color:#64748b;font-size:.9rem}.callout{background:#fff;border:1px solid var(--line);border-left:4px solid var(--acc);border-radius:14px;padding:16px 20px;margin:20px 0}
/* Construction AI News */
.ndate{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:.92rem}.ndate svg{flex:none;color:var(--acc2)}
.nlist{list-style:none;padding:0;margin:0 0 24px}.nlist li{display:grid;grid-template-columns:120px 1fr;gap:2px 16px;padding:14px 0;border-bottom:1px solid var(--line)}
.nlist time{color:var(--muted);font-size:.88rem;grid-row:span 2}.nlist a{font-weight:600;color:var(--ink);text-decoration:none}.nlist a:hover{color:var(--acc2)}.nlist span{color:var(--muted);font-size:.93rem}
.nblock{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px 22px;margin:28px 0}
.nempty{display:flex;gap:14px;align-items:flex-start}.nempty svg{flex:none;color:var(--acc2)}.nempty p{margin:4px 0 0;color:var(--muted)}
.nsrc{font-size:.85rem;white-space:nowrap}.nsources li{margin:6px 0}
@media(max-width:640px){.nlist li{grid-template-columns:1fr}.nlist time{grid-row:auto}}

/* Brand + review fixes (review/visual-review.md 1-5) */
.mark{width:44px;height:28px}
.nav nav a.btn-nav{color:#fff;font-weight:700}.nav nav a.btn-nav:hover{background:#D95A10;color:#fff}
.hero{background:radial-gradient(900px 380px at 50% -10%,#F26B1D2e,transparent 70%),#2B2D31!important}
.hero h1 em{background:none;color:#F26B1D;-webkit-text-fill-color:#F26B1D}
.indep{display:inline-flex;align-items:center;gap:8px;font-size:.92rem!important;font-weight:600;color:#e5e7eb!important;margin:-12px auto 24px!important}
.indep svg{width:18px;height:18px;color:#F26B1D}
.search:focus-within{box-shadow:0 0 0 3px #F26B1D66,0 20px 50px -12px #000a}
.prose h2.step{display:flex;align-items:center;gap:12px;margin-top:30px;padding-top:0;border-top:0}
.num{flex:none;display:inline-grid;place-items:center;width:32px;height:32px;border-radius:50%;background:#F26B1D;color:#fff;font-size:1rem;font-weight:700}
.num .dot{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.prose h2.step+p{margin-top:8px}
.gbox{background:#fff;border:1px solid var(--line);border-left:4px solid #F26B1D;border-radius:14px;padding:16px 20px;margin:18px 0 8px}
.gbox dl{margin:0;display:grid;gap:10px}.gbox dt{font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:#2B2D31}.gbox dd{margin:2px 0 0;color:#475569}
.gnext{margin:36px 0 8px;display:grid;gap:14px}
.gn-main{display:grid;grid-template-columns:1fr auto;align-items:center;background:#2B2D31;color:#fff!important;text-decoration:none;border-radius:14px;padding:16px 20px}
.gn-main span{font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;color:#FF9A5C;grid-column:1}.gn-main b{grid-column:1;font-size:1.08rem}.gn-main svg{grid-column:2;grid-row:1/3;color:#F26B1D}
.gn-main:hover{background:#3a3d43}
.gn-rel{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.gn-rel span{font-weight:600;margin-right:4px}
.gn-rel a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 12px;text-decoration:none;font-size:.9rem;color:#2B2D31}.gn-rel a:hover{border-color:#F26B1D;color:#C9530F}
@media (max-width:640px){
 .nav{flex-direction:row;flex-wrap:wrap;align-items:center;gap:8px}
 .nav nav{display:flex;flex-wrap:wrap;overflow:visible;gap:4px 2px}
 .nav nav a{padding:6px 9px}
 .nav nav a.btn-nav{order:-1;margin-left:0;margin-right:4px}
}