:root{--navy:#17435b;--dark:#092d3e;--deep:#061f2c;--orange:#f58220;--orange2:#ff9d48;--ink:#172a33;--muted:#6e818b;--line:#dbe5e9;--bg:#f2f6f8;--white:#fff;--green:#16a073;--shadow:0 22px 58px rgba(16,49,66,.13)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Segoe UI",Roboto,Arial,sans-serif}.wrap{width:min(1150px,calc(100% - 32px));margin-inline:auto}.topbar{background:#fff;border-bottom:1px solid var(--line)}.topbar-in{height:74px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--navy)}.brand-mark{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(145deg,var(--orange),#ffac59);color:#fff;font-size:22px;font-weight:900;box-shadow:0 8px 22px rgba(245,130,32,.25)}.brand b,.brand small{display:block}.brand b{font-size:17px;letter-spacing:1.4px}.brand small{margin-top:2px;color:var(--muted);font-size:11px}.top-actions{display:flex;align-items:center;gap:8px}.top-actions a{padding:10px 13px;border-radius:9px;color:var(--navy);font-weight:750;font-size:13px;text-decoration:none}.top-actions a:hover{background:#edf3f5}.top-actions .home{background:var(--navy);color:#fff}.hero{height:470px;margin-top:22px;border-radius:26px;overflow:hidden;position:relative;background:linear-gradient(120deg,var(--deep),var(--navy) 58%,#235f76);box-shadow:var(--shadow)}.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,31,43,.98) 0%,rgba(7,39,54,.94) 46%,rgba(16,63,82,.38) 72%,rgba(14,54,70,.1))}.hero-glow{position:absolute;width:430px;height:430px;border:68px solid rgba(255,255,255,.035);border-radius:50%;right:-110px;top:-170px}.hero-copy{position:absolute;z-index:3;left:52px;top:50%;transform:translateY(-56%);width:610px;color:#fff}.eyebrow,.kicker{display:inline-flex;align-items:center;color:var(--orange2);font-weight:900;font-size:11px;letter-spacing:1.8px}.eyebrow:before,.kicker:before{content:"";width:31px;height:3px;background:var(--orange);border-radius:3px;margin-right:10px}.hero h1{font-size:43px;line-height:1.07;letter-spacing:-1.25px;margin:15px 0 13px}.hero h1 em{color:var(--orange2);font-style:normal}.hero p{max-width:580px;color:#cbdce4;font-size:16px;line-height:1.65;margin:0 0 23px}.hero-btn{display:inline-flex;align-items:center;gap:20px;padding:14px 18px;border-radius:10px;background:var(--orange);color:#fff;text-decoration:none;font-weight:850;box-shadow:0 10px 25px rgba(245,130,32,.25)}.hero-btn:hover{background:#de6b14}.hero-facts{position:absolute;z-index:4;left:52px;right:36px;bottom:24px;display:flex;gap:8px}.hero-facts div{min-width:130px;padding:10px 14px;border-left:2px solid var(--orange);background:rgba(2,24,34,.47);backdrop-filter:blur(6px);border-radius:0 9px 9px 0}.hero-facts strong,.hero-facts span{display:block}.hero-facts strong{font-size:14px;color:#fff}.hero-facts span{font-size:10px;color:#a9c1cc;margin-top:2px}.beam-scene{position:absolute;z-index:1;right:-10px;top:38px;width:500px;height:370px;transform:rotate(-6deg);opacity:.88}.beam{position:absolute;display:block;width:330px;height:48px;background:linear-gradient(#9baeb6 0 15%,#445d68 16% 83%,#263e49 84%);border-radius:3px;box-shadow:0 20px 25px rgba(0,0,0,.3)}.beam:before,.beam:after{content:"";position:absolute;width:100%;height:13px;left:0;background:linear-gradient(90deg,#d2dde1,#637a84)}.beam:before{top:-11px}.beam:after{bottom:-11px}.beam-a{right:20px;top:55px}.beam-b{right:-20px;top:155px;width:390px}.beam-c{right:80px;top:255px;width:300px}.pipe{position:absolute;width:78px;height:78px;border:14px solid #8298a2;border-radius:50%;background:#183a49;box-shadow:inset 0 0 0 4px #415e6a,0 15px 25px rgba(0,0,0,.3)}.pipe-a{right:40px;top:12px}.pipe-b{right:5px;bottom:0;width:58px;height:58px;border-width:10px}.grid-lines{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:30px 30px;mask-image:linear-gradient(90deg,transparent,#000)}.workspace{padding:58px 0 22px}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:25px;margin-bottom:23px}.section-head h2,.info h2{margin:8px 0 5px;color:var(--navy);font-size:30px;letter-spacing:-.65px}.section-head p{margin:0;color:var(--muted);line-height:1.5}.secure{flex:0 0 auto;padding:9px 13px;border-radius:999px;background:#e8f7f1;color:var(--green);font-size:11px;font-weight:850}.secure i{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--green);margin-right:7px;box-shadow:0 0 0 5px rgba(22,160,115,.11)}.category-filter{display:flex;gap:7px;margin-bottom:14px;padding:6px;background:#fff;border:1px solid var(--line);border-radius:13px;width:max-content;max-width:100%;overflow:auto}.category-filter button{border:0;background:transparent;border-radius:8px;padding:10px 14px;white-space:nowrap;color:#687b84;font:inherit;font-size:12px;font-weight:800;cursor:pointer}.category-filter button.active{background:var(--navy);color:#fff}.product-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:9px;margin-bottom:15px}.product-card{min-height:112px;padding:15px 13px;border:1px solid var(--line);border-radius:14px;background:#fff;text-align:left;cursor:pointer;transition:.2s;font:inherit}.product-card:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(18,58,77,.09);border-color:#b8cbd3}.product-card.active{background:linear-gradient(145deg,var(--navy),#225d74);border-color:var(--navy);box-shadow:0 12px 30px rgba(23,67,91,.19)}.product-icon{width:35px;height:35px;border-radius:9px;display:grid;place-items:center;background:#eaf2f5;color:var(--navy);font-weight:950;font-size:17px}.product-card.active .product-icon{background:rgba(255,255,255,.14);color:#ffae69}.product-card b,.product-card small{display:block}.product-card b{font-size:13px;color:var(--navy);margin-top:9px}.product-card small{font-size:10px;color:#8a9aa2;margin-top:3px}.product-card.active b{color:#fff}.product-card.active small{color:#bfd2da}.calculator{display:grid;grid-template-columns:1.25fr .75fr;background:#fff;border:1px solid var(--line);border-radius:21px;overflow:hidden;box-shadow:var(--shadow);scroll-margin-top:16px}.calc-form{padding:30px}.calc-title{display:flex;align-items:center;gap:13px;margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--line)}.selected-icon{width:52px;height:52px;flex:0 0 52px;border-radius:14px;background:var(--orange);color:#fff;display:grid;place-items:center;font-size:23px;font-weight:950;box-shadow:0 8px 20px rgba(245,130,32,.22)}.calc-title small{color:var(--orange);font-weight:900;letter-spacing:1.4px;font-size:9px}.calc-title h3{margin:3px 0;color:var(--navy);font-size:23px}.calc-title p{margin:0;color:var(--muted);font-size:12px}.field{display:block}.field>span{display:block;margin-bottom:8px;color:#526871;font-size:12px;font-weight:800}.field>span i{font-style:normal;color:#98a5ab;font-weight:500}.field>small{display:block;color:var(--orange);font-size:11px;font-weight:750;margin-top:7px}input,select{width:100%;height:48px;border:1px solid #ccdade;border-radius:9px;background:#fbfcfd;color:var(--ink);font:inherit;padding:0 13px;outline:none}input:focus,select:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(245,130,32,.11)}.dimensions,.input-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px;margin-top:17px}.unit-input{position:relative}.unit-input input{padding-right:64px}.unit-input b{position:absolute;right:13px;top:50%;transform:translateY(-50%);color:#91a0a7;font-size:11px}.result{padding:31px;color:#fff;background:linear-gradient(145deg,var(--deep),var(--navy));position:relative;overflow:hidden}.result:after{content:"";position:absolute;width:240px;height:240px;right:-130px;bottom:-130px;border:45px solid rgba(255,255,255,.05);border-radius:50%}.result>*{position:relative;z-index:1}.result-label{display:block;color:#a9c3ce;font-size:10px;font-weight:900;letter-spacing:1.8px}.result>strong{display:block;font-size:40px;line-height:1;margin-top:13px}.result>strong small{font-size:18px}.result>b{display:block;color:#ffad69;margin-top:8px}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;margin-top:22px;background:rgba(255,255,255,.15);border-radius:11px;overflow:hidden}.result-grid div{padding:12px;background:rgba(2,26,38,.42)}.result-grid span,.result-grid strong{display:block}.result-grid span{color:#a9c1cb;font-size:10px;margin-bottom:4px}.result-grid strong{font-size:13px}.cost-box{padding:16px 0;margin-top:18px;border-top:1px solid rgba(255,255,255,.16);border-bottom:1px solid rgba(255,255,255,.16)}.cost-box span,.cost-box strong{display:block}.cost-box span{font-size:10px;color:#acc4ce;margin-bottom:5px}.cost-box strong{font-size:23px}.result-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:16px}.result-actions button{height:42px;border:0;border-radius:9px;background:var(--orange);color:#fff;font:inherit;font-size:12px;font-weight:850;cursor:pointer}.result-actions button:last-child{background:rgba(255,255,255,.12)}.result-note{font-size:10px;color:#9db5c0;line-height:1.5;margin:13px 0 0}.advantages{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px}.advantages article{display:flex;gap:13px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:15px}.advantages article>span{width:34px;height:34px;flex:0 0 34px;border-radius:9px;background:#fff1e5;color:var(--orange);display:grid;place-items:center;font-size:11px;font-weight:950}.advantages h3{margin:1px 0 5px;color:var(--navy);font-size:15px}.advantages p{margin:0;color:var(--muted);font-size:12px;line-height:1.55}.info{display:grid;grid-template-columns:1.4fr .6fr;gap:20px;padding:60px 0}.info>div,.info aside{padding:27px;background:#fff;border:1px solid var(--line);border-radius:18px}.info p{color:#5d727c;line-height:1.75}.formula{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:15px 17px;border-left:4px solid var(--orange);border-radius:9px;background:#fff2e7}.formula span{color:#9a6840;font-size:11px;font-weight:850}.formula strong{color:var(--navy)}.info aside{background:var(--navy);color:#fff}.info aside h3{margin:0 0 13px}.info aside ul{margin:0;padding-left:19px;color:#c7d8df;line-height:2;font-size:13px}footer{background:var(--deep);color:#c8d8df;padding:28px 0}.footer-in{display:flex;align-items:center;justify-content:space-between;gap:20px}.footer-brand{color:#fff}.footer-in p{font-size:11px;color:#93acb7}.footer-in>a{color:var(--orange2);font-weight:850;text-decoration:none}
@media(max-width:920px){.beam-scene{right:-150px}.hero-copy{width:62%}.product-grid{grid-template-columns:repeat(4,1fr)}.calculator{grid-template-columns:1fr}.advantages{grid-template-columns:1fr}.info{grid-template-columns:1fr}}
@media(max-width:620px){.wrap{width:min(100% - 20px,1150px)}.topbar-in{height:65px}.brand small{display:none}.top-actions a:first-child{display:none}.hero{height:500px;margin-top:10px;border-radius:17px}.beam-scene{opacity:.28;right:-250px;top:70px}.hero-copy{left:21px;right:21px;top:43%;width:auto}.hero h1{font-size:31px}.hero p{font-size:14px}.hero-facts{left:20px;right:20px;bottom:18px;display:grid;grid-template-columns:repeat(3,1fr)}.hero-facts div{min-width:0;padding:9px}.hero-facts strong{font-size:11px}.hero-facts span{font-size:8px}.workspace{padding-top:42px}.section-head{display:block}.section-head h2,.info h2{font-size:25px}.secure{display:inline-block;margin-top:13px}.product-grid{grid-template-columns:repeat(2,1fr)}.product-card{min-height:105px}.calc-form,.result{padding:21px 16px}.dimensions,.input-grid{grid-template-columns:1fr}.result-grid{grid-template-columns:1fr 1fr}.info{padding-top:42px}.info>div,.info aside{padding:20px 17px}.formula{display:block}.formula strong{display:block;margin-top:7px}.footer-in{flex-direction:column;align-items:flex-start}}
@media print{.topbar,.hero,.section-head,.category-filter,.product-grid,.calc-form,.advantages,.info,footer,.result-actions{display:none!important}body{background:#fff}.workspace{padding:0}.calculator{display:block;border:0;box-shadow:none}.result{background:#fff!important;color:#000}.result:after{display:none}.result-grid div{background:#fff;border:1px solid #ddd}.result-grid span,.result-note,.cost-box span,.result-label{color:#555}}

/* v2: Gerçek profil fotoğraflı, daha ince hero */
.hero{height:330px;background:var(--deep);border-radius:24px}.hero-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 58%}.hero:before{z-index:1;background:linear-gradient(90deg,rgba(3,25,36,.98) 0%,rgba(5,31,43,.93) 42%,rgba(7,37,50,.42) 67%,rgba(7,34,46,.08))}.hero-glow{display:none}.hero-copy{left:45px;top:37px;transform:none;width:610px}.eyebrow{font-size:10px;letter-spacing:1.7px}.hero h1{font-size:34px;margin:12px 0 9px}.hero p{max-width:540px;font-size:14px;line-height:1.55;margin-bottom:16px}.hero-btn{gap:18px;padding:11px 16px;font-size:13px}.hero-facts{left:45px;right:auto;bottom:19px;gap:7px}.hero-facts div{min-width:120px;padding:8px 12px}.hero-facts strong{font-size:12px}.hero-facts span{font-size:9px}.workspace{padding-top:50px}
@media(max-width:920px){.hero-copy{width:58%}}
@media(max-width:620px){.hero{height:385px}.hero-photo{object-position:61% center}.hero:before{background:linear-gradient(90deg,rgba(3,25,36,.98),rgba(5,31,43,.89) 58%,rgba(5,31,43,.35))}.hero-copy{left:20px;right:20px;top:27px;width:auto}.hero h1{max-width:350px;font-size:28px}.hero p{max-width:330px;font-size:13px;line-height:1.5}.hero-facts{left:20px;right:20px;bottom:15px}.hero-facts div{min-width:0;padding:7px}.hero-facts strong{font-size:10px}.hero-facts span{font-size:7px}}

/* v3: Kartları büyütmeden gerçek profil fotoğraf şeritleri */
.product-card{height:112px;min-height:112px;padding:0;overflow:hidden;display:block}.product-thumb{position:relative;display:block;width:100%;height:43px;background-image:linear-gradient(90deg,rgba(5,30,42,.08),rgba(5,30,42,.02)),url('metal-profilleri-hero-v2.png');background-repeat:no-repeat;background-size:245% auto;background-position:79% 61%;border-bottom:1px solid var(--line)}.product-thumb:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,35,47,.04),transparent)}.product-thumb i{position:absolute;z-index:2;left:9px;top:8px;width:27px;height:27px;border-radius:7px;display:grid;place-items:center;background:rgba(235,244,247,.92);box-shadow:0 2px 8px rgba(5,31,43,.12);color:var(--navy);font-style:normal;font-size:12px;font-weight:950}.product-copy{display:block;padding:7px 12px}.product-card b{margin-top:0}.product-card small{margin-top:2px}.product-card.active .product-thumb{border-color:rgba(255,255,255,.12)}.product-card.active .product-thumb i{background:var(--orange);color:#fff}.product-card.active .product-copy b{color:#fff}
.thumb-ipe,.thumb-ipn,.thumb-hea,.thumb-heb,.thumb-hem{background-position:70% 48%}.thumb-upn,.thumb-upe,.thumb-cprofile{background-position:63% 67%}.thumb-tbar{background-position:94% 88%}.thumb-angle,.thumb-zprofile{background-position:77% 78%}.thumb-box,.thumb-square{background-position:82% 66%}.thumb-pipe,.thumb-oval,.thumb-round{background-position:99% 62%}.thumb-sheet,.thumb-flat,.thumb-hex,.thumb-triangle{background-position:73% 88%}
@media(max-width:620px){.product-card{height:108px;min-height:108px}.product-thumb{height:40px}.product-copy{padding:7px 10px}}

/* v4: Fotoğraf şeritleri kaldırıldı, temiz teknik kartlara dönüldü */
.product-card{height:auto;min-height:112px;padding:15px 13px;overflow:visible;display:block}
@media(max-width:620px){.product-card{height:auto;min-height:105px}}