/* صیادی نژاد — «کارگاه»: بتنیِ روشن، زغالی، نارنجیِ ایمنی و نوارِ هشدار؛ Changa برای تیتر، Rubik برای متن */
@font-face{font-family:Changa;font-weight:700;font-display:swap;src:url(/a/fonts/changa-arabic-700-normal.woff2) format('woff2');unicode-range:U+0600-06FF,U+200C-200E,U+FB50-FDFF,U+FE80-FEFC}
@font-face{font-family:Changa;font-weight:800 900;font-display:swap;src:url(/a/fonts/changa-arabic-800-normal.woff2) format('woff2');unicode-range:U+0600-06FF,U+200C-200E,U+FB50-FDFF,U+FE80-FEFC}
@font-face{font-family:Changa;font-weight:700 900;font-display:swap;src:url(/a/fonts/changa-latin-700-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+2000-206F}
@font-face{font-family:Rubik;font-weight:400;font-display:swap;src:url(/a/fonts/rubik-arabic-400-normal.woff2) format('woff2');unicode-range:U+0600-06FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE80-FEFC}
@font-face{font-family:Rubik;font-weight:400;font-display:swap;src:url(/a/fonts/rubik-latin-400-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+2000-206F}
@font-face{font-family:Rubik;font-weight:600 800;font-display:swap;src:url(/a/fonts/rubik-arabic-600-normal.woff2) format('woff2');unicode-range:U+0600-06FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE80-FEFC}
@font-face{font-family:Rubik;font-weight:600 800;font-display:swap;src:url(/a/fonts/rubik-latin-600-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+2000-206F}

:root{--bg:#f1efea;--surface:#fff;--ink:#1d1d1b;--muted:#68645c;--line:#dedad1;--brand:#1d1d1b;--brand-ink:#fff;--accent:#f26a1b;
--orange:#f26a1b;--orange-d:#c4520f;--concrete:#e2ded5;--radius:10px;--radius-sm:8px;
--shadow:0 1px 0 rgb(0 0 0/.04),0 10px 26px rgb(29 29 27/.10);--font-body:Rubik,Tahoma,sans-serif;--font-display:Changa,Rubik,sans-serif;
--ft-bg:#1d1d1b;--ft-ink:#ecebe7;--hazard:repeating-linear-gradient(-45deg,#f26a1b 0 14px,#1d1d1b 14px 28px)}
body{line-height:1.9}
h1,h2,h3,.sec__title{font-weight:800;letter-spacing:0}
.hd{background:color-mix(in srgb,#fff 92%,transparent);border-bottom:0;box-shadow:0 3px 0 var(--orange)}
.brand svg{width:44px;height:44px}
.brand__text b{font-size:21px;font-weight:800}
.hd__call{background:var(--orange);color:#fff;border-radius:8px}
.nav a{border-radius:6px}
.nav a:hover{background:#f6e3d6;color:var(--orange-d)}
.btn{border-radius:8px}
.btn--brand{background:var(--ink);color:#fff}
.btn--orange{background:var(--orange);color:#fff}
.btn--orange:hover{background:var(--orange-d)}
.card{border-radius:10px;border-color:#e2ded5}
.card__img--art{background:#f1efea}
.card__price{color:var(--orange-d)}
.pd__price{background:#fff4ec;border:2px solid var(--orange);border-radius:10px}
.pd__price b{color:var(--ink)}
.pd__coll{color:var(--orange-d)}
.pl td:last-child{color:var(--orange-d)}
.ft{border-top:10px solid transparent;border-image:var(--hazard) 10}

/* ---------- home ---------- */
.s-hero{position:relative;overflow:hidden;color:#ecebe7;background:linear-gradient(rgb(255 255 255/.035) 1px,transparent 1px) 0 0/40px 40px,linear-gradient(90deg,rgb(255 255 255/.035) 1px,transparent 1px) 0 0/40px 40px,radial-gradient(600px 420px at 15% 60%,rgb(242 106 27/.22),transparent 70%),#1d1d1b}
.s-hero::after{content:"";position:absolute;inset:auto 0 0;height:12px;background:var(--hazard)}
.s-hero__in{display:grid;gap:26px;align-items:center;padding-block:clamp(32px,6vw,72px) clamp(40px,6vw,80px)}
@media (min-width:920px){.s-hero__in{grid-template-columns:1.1fr .9fr}}
.s-tag{display:inline-flex;align-items:center;gap:8px;background:rgb(255 255 255/.08);border:1px solid rgb(255 255 255/.14);padding:6px 12px;border-radius:6px;font-size:13.5px}
.s-tag svg{color:var(--orange)}
.s-hero h1{font-size:clamp(34px,6vw,64px);line-height:1.3;margin:16px 0 10px;color:#fff}
.s-hero h1 em{font-style:normal;color:var(--orange)}
.s-hero p{color:#c9c6be;max-width:540px}
.s-hero__cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.s-hero .btn--ghost{color:#fff}
.s-stack{max-width:440px;width:100%;margin-inline:auto}
.s-stack svg{width:100%;height:auto;overflow:visible}
.s-stack .crane{transform-origin:330px 40px;animation:swing 6s ease-in-out infinite alternate}
@keyframes swing{from{transform:rotate(-2deg)}to{transform:rotate(3deg)}}
@media (prefers-reduced-motion:reduce){.s-stack .crane{animation:none}}

/* truss calculator */
.s-calc{display:grid;gap:18px;padding:clamp(18px,3vw,30px);border-radius:12px;background:#fff;border:2px solid var(--ink);box-shadow:8px 8px 0 var(--orange)}
@media (min-width:900px){.s-calc{grid-template-columns:1.3fr 1fr;align-items:center}}
.s-calc h2{font-size:clamp(22px,3vw,30px)}
.s-calc p{color:var(--muted);font-size:14.5px}
.s-calc__f{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:14px}
@media (max-width:560px){.s-calc__f{grid-template-columns:1fr 1fr}.s-calc__f label:last-child{grid-column:1/-1}}
.s-calc label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted);font-weight:600}
.s-calc select{font:inherit;font-size:16px;color:var(--ink);padding:10px 12px;border:1.5px solid var(--line);border-radius:8px;background:#fff;min-height:48px}
.s-calc select:focus{border-color:var(--orange);outline:0}
.s-calc__out{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:20px;border-radius:10px;background:#1d1d1b;color:#fff;text-align:center;min-height:150px}
.s-calc__out small{color:#bdb9b0}
.s-calc__out b{font-family:var(--font-display);font-size:clamp(28px,4vw,40px);color:var(--orange)}
.s-calc__out a{color:#fff;font-size:13.5px}

/* price board */
.s-board{border-radius:12px;overflow:hidden;background:#1d1d1b;color:#ecebe7;box-shadow:var(--shadow)}
.s-board__hd{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:16px 20px;border-bottom:1px solid rgb(255 255 255/.1)}
.s-board__hd h2{font-size:clamp(20px,2.6vw,26px);color:#fff}
.s-board__hd small{color:#bdb9b0}
.s-board__hd small i{display:inline-block;width:8px;height:8px;border-radius:50%;background:#3ddc84;box-shadow:0 0 8px #3ddc84;margin-inline-end:6px}
.s-board__grid{display:grid;gap:1px;background:rgb(255 255 255/.08)}
@media (min-width:760px){.s-board__grid{grid-template-columns:1fr 1fr}}
@media (min-width:1100px){.s-board__grid{grid-template-columns:1fr 1fr 1fr}}
.s-board__col{background:#1d1d1b;padding:14px 18px}
.s-board__col h3{font-size:15px;color:var(--orange);margin-bottom:6px;display:flex;align-items:center;gap:8px}
.s-board__col a{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px dashed rgb(255 255 255/.1);text-decoration:none;font-size:14.5px}
.s-board__col a:last-child{border-bottom:0}
.s-board__col a b{font-family:var(--font-display);color:#ffd2b5;white-space:nowrap;font-weight:700;letter-spacing:.3px}
.s-board__col a:hover span{color:var(--orange)}

.s-cats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
@media (min-width:760px){.s-cats{grid-template-columns:repeat(4,minmax(0,1fr))}}
.s-cat{display:flex;align-items:center;gap:12px;padding:14px;border-radius:10px;background:#fff;border:1px solid var(--line);border-inline-start:5px solid var(--orange);text-decoration:none;min-height:76px}
.s-cat__ic{width:48px;height:48px;flex-shrink:0;border-radius:8px;display:grid;place-items:center;background:var(--concrete);color:var(--ink)}
.s-cat b{display:block;font-size:15px}
.s-cat small{color:var(--muted)}
.s-cat:hover{box-shadow:var(--shadow)}

.s-visit{display:grid;gap:20px;align-items:center;padding:clamp(22px,4vw,40px);border-radius:12px;background:var(--orange);color:#fff}
@media (min-width:860px){.s-visit{grid-template-columns:1.4fr 1fr}}
.s-visit h2{font-size:clamp(24px,3.4vw,36px)}
.s-visit p{color:#fff3ea}
.s-visit .btn{background:#1d1d1b;color:#fff;font-size:18px;min-height:60px;width:100%}
.s-faq details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:4px 16px;margin-bottom:8px}
.s-faq summary{cursor:pointer;font-weight:600;min-height:50px;display:flex;align-items:center}
.s-faq p{color:var(--muted);padding-bottom:12px}