:root{--bg:#0d1113;--panel:#151b1e;--line:#2c3538;--text:#f1f3f2;--muted:#aab4b4;--green:#8bbf3d;--green2:#b4df69}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at top right,#1b2624,transparent 35%),var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif}
a{text-decoration:none;color:inherit}.wrap{width:min(1180px,92%);margin:auto}.top{border-bottom:1px solid var(--line);background:#0a0e10cc;position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}
.nav{min-height:78px;display:flex;align-items:center;gap:28px}.logo{height:58px;width:auto;object-fit:contain}.links{display:flex;gap:20px;flex:1;justify-content:center;font-size:13px;font-weight:bold;letter-spacing:.3px;color:#d9dfdd}.links a:hover,.active{color:var(--green)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 22px;border:1px solid var(--green);background:var(--green);color:#111;font-weight:800;font-size:13px;letter-spacing:.5px}.btn.alt{background:transparent;color:var(--green)}
.hero{padding:76px 0 48px;background:linear-gradient(90deg,#0d1113 30%,transparent),repeating-linear-gradient(135deg,transparent 0 12px,#151c1e 13px 14px)}
.kicker{color:var(--green);font-size:13px;font-weight:bold;letter-spacing:2px}.hero h1{font-size:clamp(38px,7vw,78px);line-height:.95;margin:14px 0 20px;max-width:900px}.hero p{color:var(--muted);font-size:18px;line-height:1.7;max-width:720px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:28px 0}.stat{padding:20px;border-right:1px solid var(--line)}.stat b{display:block;font-size:24px;color:var(--green)}.section{padding:58px 0}.section h2{font-size:34px;margin:0 0 12px}.lead{color:var(--muted);max-width:760px;line-height:1.7}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}.card{background:linear-gradient(145deg,#171e20,#101517);border:1px solid var(--line);padding:24px;min-height:280px;position:relative;overflow:hidden}.card:before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(135deg,transparent 0 13px,#ffffff05 14px 15px);pointer-events:none}.card>*{position:relative}.icon{color:var(--green);font-size:28px}.card h3{font-size:21px;margin:18px 0 10px}.card p,.card li{color:var(--muted);line-height:1.65;font-size:14px}.tag{display:inline-block;color:var(--green2);font-size:12px;border:1px solid #587a2b;padding:5px 8px;margin:4px 4px 0 0}
.table-wrap{overflow:auto;margin-top:28px}.spec{width:100%;border-collapse:collapse;background:#111719}.spec th,.spec td{padding:14px;text-align:left;border:1px solid var(--line)}.spec th{background:#1a2325;color:var(--green2)}.spec td{color:#c8d0cf}
.banner{padding:42px;background:linear-gradient(110deg,#18241d,#101719);border:1px solid #405033;margin-top:30px}.banner h2{margin-top:0}.two{display:grid;grid-template-columns:1fr 1fr;gap:20px}.notice{padding:18px;background:#12191b;border-left:3px solid var(--green);color:var(--muted);line-height:1.7}
footer{border-top:1px solid var(--line);padding:36px 0;color:var(--muted);font-size:13px}.foot{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}.product-hero{padding:58px 0 28px;border-bottom:1px solid var(--line)}.product-hero h1{font-size:56px;margin:8px 0}.crumb{font-size:12px;color:var(--muted)}
@media(max-width:850px){.links{display:none}.nav{justify-content:space-between}.grid{grid-template-columns:1fr 1fr}.stats{grid-template-columns:1fr 1fr}.two{grid-template-columns:1fr}.product-hero h1{font-size:42px}}
@media(max-width:560px){.grid{grid-template-columns:1fr}.stats{grid-template-columns:1fr}.stat{border-bottom:1px solid var(--line)}.hero{padding-top:52px}.logo{height:48px}.btn{padding:12px 14px}}

/* Advanced interaction layer */
.menu-toggle{display:none;background:transparent;border:1px solid var(--line);color:var(--green);padding:10px}
.language{position:relative;font-size:12px;color:var(--green2);cursor:pointer;white-space:nowrap}
.lang-options{display:flex;gap:6px;margin-left:auto}.lang-options button{background:#12191b;border:1px solid var(--line);color:#dbe4df;padding:7px 9px;font-size:11px;cursor:pointer}.lang-options button:hover{border-color:var(--green);color:var(--green)}
.catalog-tools{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0}.catalog-tools input,.catalog-tools select,.quote-form input,.quote-form select,.quote-form textarea{width:100%;background:#0d1214;border:1px solid var(--line);color:#e8efeb;padding:14px}.catalog-tools input{flex:2;min-width:240px}.catalog-tools select{flex:1;min-width:190px}.product-card{transition:transform .2s,border-color .2s}.product-card:hover{transform:translateY(-4px);border-color:#628f34}
.quote-form{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}.quote-form textarea,.quote-form .full{grid-column:1/-1}.quote-form label{font-size:12px;color:var(--muted);display:block;margin-bottom:6px}.file-box{border:1px dashed #5d7d42;padding:16px;background:#101617;color:var(--muted);font-size:13px}.industry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.industry{padding:28px;border:1px solid var(--line);background:linear-gradient(145deg,#172021,#101516)}.industry h3{margin:12px 0}.industry p{color:var(--muted);line-height:1.65}.library-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.article{border:1px solid var(--line);padding:22px;background:#111719}.article small{color:var(--green)}.article p{color:var(--muted);line-height:1.65}.pill{display:inline-block;background:#223019;color:var(--green2);padding:5px 9px;font-size:11px;margin-bottom:12px}
.whatsapp{position:fixed;right:20px;bottom:20px;background:#8bbf3d;color:#111;border-radius:50%;width:58px;height:58px;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:bold;box-shadow:0 8px 30px #0008;z-index:20}
@media(max-width:850px){.menu-toggle{display:block}.links{display:none;position:absolute;top:78px;left:0;right:0;background:#0c1012;padding:20px;flex-direction:column;border-bottom:1px solid var(--line)}.links.open{display:flex}.industry-grid,.library-grid{grid-template-columns:1fr 1fr}.quote-form{grid-template-columns:1fr}}
@media(max-width:560px){.industry-grid,.library-grid{grid-template-columns:1fr}.lang-options{display:none}.nav .btn{font-size:10px;padding:10px}.menu-toggle{order:3}}

.contact-float{position:fixed;right:20px;bottom:20px;z-index:30;display:flex;flex-direction:column;gap:10px}
.contact-float .whatsapp{position:static}
.contact-bar{background:#0a0e10;border-bottom:1px solid var(--line);font-size:12px;color:#b8c3be}
.contact-bar .wrap{display:flex;gap:22px;justify-content:flex-end;align-items:center;min-height:36px;flex-wrap:wrap}
.contact-bar a:hover{color:var(--green)}
@media(max-width:560px){.contact-bar .wrap{justify-content:center;gap:10px;font-size:10px}.contact-float{right:14px;bottom:14px}}

/* ================= CARBONSAN V5 PREMIUM VISUAL SYSTEM ================= */
:root{--lime:#9bd34b;--ink:#080b0c;--steel:#151b1d;--soft:#20292b}
body{background:#080b0c}
.v5-hero{min-height:720px;position:relative;display:flex;align-items:center;overflow:hidden;
background:
linear-gradient(90deg,rgba(5,8,9,.96) 0%,rgba(5,8,9,.84) 39%,rgba(5,8,9,.28) 68%,rgba(5,8,9,.72) 100%),
radial-gradient(circle at 78% 40%,rgba(155,211,75,.18),transparent 25%),
linear-gradient(125deg,#080b0c 5%,#182022 54%,#0a0e10 100%)}
.v5-hero:before{content:"";position:absolute;right:-4%;top:4%;width:52%;height:92%;
background:
repeating-linear-gradient(110deg,rgba(155,211,75,.18) 0 2px,transparent 2px 8px),
linear-gradient(130deg,transparent 10%,rgba(255,255,255,.08) 48%,transparent 49%);
clip-path:polygon(22% 0,100% 0,100% 100%,0 92%,13% 46%);
filter:drop-shadow(-20px 25px 45px #000)}
.v5-hero:after{content:"";position:absolute;right:8%;top:13%;width:31%;height:72%;opacity:.75;
background:repeating-linear-gradient(90deg,#151b1c 0 3px,#333d3f 3px 5px,#0b0f10 5px 8px);
transform:skewY(-8deg) rotate(-6deg);box-shadow:0 0 90px rgba(155,211,75,.15)}
.v5-hero .wrap{position:relative;z-index:2}.v5-title{font-size:clamp(46px,6.5vw,92px);max-width:980px;line-height:.92;margin:18px 0 24px;letter-spacing:-2px}
.v5-title em{font-style:normal;color:var(--lime)}.v5-hero .lead{font-size:18px;max-width:680px}
.trust-strip{background:#0c1113;border-top:1px solid #283235;border-bottom:1px solid #283235}
.trust-strip .wrap{display:grid;grid-template-columns:repeat(4,1fr)}.trust-item{padding:24px;border-right:1px solid #283235}.trust-item strong{display:block;color:var(--lime);font-size:20px}.trust-item span{font-size:12px;color:#9da8a7}
.v5-heading{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:28px}.v5-heading h2{font-size:clamp(30px,4vw,52px);margin:6px 0 0;line-height:1}
.v5-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.visual-card{min-height:310px;position:relative;overflow:hidden;padding:24px;border:1px solid #293234;background:#111719;display:flex;flex-direction:column;justify-content:end;transition:.25s}
.visual-card:hover{transform:translateY(-5px);border-color:var(--lime)}
.visual-card:before{content:"";position:absolute;inset:0;opacity:.8;background:linear-gradient(180deg,transparent,#090d0e 78%),var(--cardbg,linear-gradient(145deg,#263034,#111517))}
.visual-card:after{content:"";position:absolute;width:150%;height:44%;left:-25%;top:7%;transform:rotate(-15deg);background:repeating-linear-gradient(90deg,rgba(255,255,255,.14) 0 2px,transparent 2px 8px);opacity:.28}
.visual-card>*{position:relative;z-index:1}.visual-card h3{font-size:22px;margin:0 0 8px}.visual-card p{font-size:13px;color:#aeb7b6;margin:0 0 16px}
.feature-split{display:grid;grid-template-columns:1.05fr .95fr;border:1px solid #2b3537;background:#101618}
.feature-image{min-height:480px;position:relative;overflow:hidden;background:
radial-gradient(circle at 60% 38%,rgba(155,211,75,.25),transparent 17%),
repeating-linear-gradient(112deg,#171f20 0 5px,#303a3c 5px 7px,#0b1011 7px 12px)}
.feature-image:after{content:"CARBONSAN";position:absolute;right:-20px;bottom:15px;font-size:70px;font-weight:bold;color:#ffffff0b}
.feature-copy{padding:60px}.feature-copy h2{font-size:48px;line-height:1;margin-top:10px}.feature-copy li{color:#adb8b5;margin:14px 0;line-height:1.5}
.sector-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.sector{min-height:230px;padding:28px;border:1px solid #2a3335;position:relative;overflow:hidden;background:#111719}.sector:before{content:"";position:absolute;right:-25px;top:-25px;width:180px;height:180px;border:1px solid #7b963c;border-radius:50%;opacity:.35}.sector h3{font-size:24px;margin:45px 0 8px}.sector p{color:#a9b3b1;font-size:13px}
.v5-cta{padding:70px 0;background:linear-gradient(110deg,#182316,#0c1112 58%,#1b2520)}.v5-cta h2{font-size:clamp(38px,5vw,70px);line-height:.95;max-width:850px;margin:14px 0}
@media(max-width:950px){.v5-grid{grid-template-columns:repeat(2,1fr)}.feature-split{grid-template-columns:1fr}.trust-strip .wrap{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.v5-hero{min-height:650px}.v5-hero:before{width:95%;opacity:.55}.v5-hero:after{display:none}.v5-grid,.sector-row{grid-template-columns:1fr}.feature-copy{padding:35px 25px}.feature-copy h2{font-size:38px}.trust-strip .wrap{grid-template-columns:1fr}.trust-item{border-bottom:1px solid #283235}.v5-heading{display:block}}

.v6-visual-showcase{position:relative;min-height:560px;overflow:hidden;border-top:1px solid #283235;border-bottom:1px solid #283235;background:#070a0b}
.v6-visual-showcase:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,8,9,.88),rgba(5,8,9,.22) 45%,rgba(5,8,9,.65)),url("assets/carbonsan-premium-visual-concept.png") center/cover no-repeat}
.v6-visual-showcase .wrap{position:relative;z-index:2;padding:80px 0;min-height:560px;display:flex;align-items:flex-end}
.v6-visual-panel{max-width:620px;padding:28px;background:rgba(8,12,13,.82);border:1px solid #40503b;backdrop-filter:blur(8px)}
.v6-visual-panel h2{font-size:clamp(32px,4vw,58px);line-height:.98;margin:10px 0}
.tech-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:28px}
.tech-card{padding:22px;border:1px solid #2a3436;background:linear-gradient(145deg,#151c1e,#0b1011)}
.tech-card b{display:block;color:#9bd34b;font-size:13px;letter-spacing:.8px;margin-bottom:8px}
.tech-card span{font-size:13px;color:#aeb7b5;line-height:1.55}
.product-spec-band{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid #293335;margin:28px 0}
.product-spec-band div{padding:18px;border-right:1px solid #293335}
.product-spec-band small{display:block;color:#8e9b98;text-transform:uppercase;font-size:10px;letter-spacing:1px}
.product-spec-band b{display:block;margin-top:7px;color:#dce4df;font-size:14px}
.application-pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.application-pills span{border:1px solid #48632b;color:#b6dc70;padding:8px 11px;font-size:12px;background:#151c12}
.v6-quote-strip{padding:32px;margin-top:40px;border:1px solid #506f32;background:linear-gradient(90deg,#172111,#0d1314)}
@media(max-width:850px){.tech-grid,.product-spec-band{grid-template-columns:1fr 1fr}.product-spec-band div{border-bottom:1px solid #293335}}
@media(max-width:560px){.v6-visual-showcase,.v6-visual-showcase .wrap{min-height:480px}.tech-grid,.product-spec-band{grid-template-columns:1fr}.v6-visual-panel{padding:22px}}

/* ================= CARBONSAN V7 PRODUCT PLATFORM ================= */
.v7-platform-hero{
 position:relative; min-height:640px; overflow:hidden; background:#070a0b;
 border-top:1px solid #283235; border-bottom:1px solid #283235;
}
.v7-platform-hero:before{
 content:""; position:absolute; inset:0;
 background:
 linear-gradient(90deg,rgba(5,8,9,.90) 0%,rgba(5,8,9,.54) 45%,rgba(5,8,9,.18) 100%),
 url("assets/carbonsan-v7-homepage-concept.png") center/cover no-repeat;
}
.v7-platform-hero .wrap{position:relative;z-index:1;min-height:640px;display:flex;align-items:center}
.v7-platform-copy{max-width:690px}
.v7-platform-copy h1{font-size:clamp(48px,6.5vw,92px);line-height:.94;margin:15px 0 22px;letter-spacing:-2px}
.v7-platform-copy h1 span{color:#9bd34b}
.v7-catalog-banner{
 position:relative;min-height:520px;overflow:hidden;border:1px solid #2a3537;margin:35px 0;
 background:linear-gradient(90deg,rgba(8,11,12,.88),rgba(8,11,12,.12)),
 url("assets/carbonsan-v7-product-platform.png") center/cover no-repeat;
}
.v7-catalog-banner .inside{position:absolute;left:0;bottom:0;padding:42px;max-width:560px}
.v7-catalog-banner h2{font-size:clamp(32px,4vw,58px);line-height:1;margin:10px 0}
.product-type-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:30px 0}
.product-type-card{padding:26px;min-height:200px;border:1px solid #293436;background:linear-gradient(145deg,#151d1f,#0a0f10)}
.product-type-card strong{display:block;color:#9bd34b;font-size:13px;letter-spacing:.8px;margin-bottom:10px}
.product-type-card h3{margin:0 0 12px;font-size:22px}
.product-type-card p{margin:0;color:#aeb8b5;font-size:13px;line-height:1.6}
.inquiry-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#2b3536;border:1px solid #2b3536;margin-top:28px}
.inquiry-step{background:#0d1314;padding:26px}
.inquiry-step b{display:block;color:#9bd34b;font-size:28px;margin-bottom:12px}
.inquiry-step h3{font-size:17px;margin:0 0 8px}
.inquiry-step p{font-size:12px;color:#aab4b2;margin:0;line-height:1.55}
@media(max-width:900px){.product-type-grid{grid-template-columns:1fr 1fr}.inquiry-flow{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.v7-platform-hero,.v7-platform-hero .wrap{min-height:580px}.product-type-grid,.inquiry-flow{grid-template-columns:1fr}.v7-catalog-banner .inside{padding:25px}}

/* ================= CARBONSAN V8 CATALOG SYSTEM ================= */
.catalog-intro{max-width:860px;margin-bottom:38px}
.catalog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.catalog-card{position:relative;min-height:260px;padding:26px;border:1px solid #2b3638;background:linear-gradient(145deg,#151d1f,#090e0f);overflow:hidden;display:flex;flex-direction:column;justify-content:flex-end}
.catalog-card:before{content:"";position:absolute;right:-35px;top:-35px;width:150px;height:150px;border:1px solid rgba(155,211,75,.32);transform:rotate(45deg)}
.catalog-card:after{content:"";position:absolute;left:0;top:0;width:5px;height:100%;background:#9bd34b;opacity:.8}
.catalog-card>*{position:relative;z-index:1}
.catalog-code{color:#9bd34b;font-size:11px;letter-spacing:1.5px;font-weight:bold;margin-bottom:auto}
.catalog-card h3{font-size:24px;margin:18px 0 9px}
.catalog-card p{font-size:13px;line-height:1.6;color:#aeb8b5;margin:0 0 16px}
.catalog-meta{display:flex;gap:8px;flex-wrap:wrap}
.catalog-meta span{font-size:10px;padding:6px 8px;border:1px solid #354345;color:#aeb9b6}
.catalog-note{margin-top:34px;padding:22px;border-left:4px solid #9bd34b;background:#111718;color:#adb8b5;font-size:13px;line-height:1.7}
.catalog-table{width:100%;border-collapse:collapse;margin-top:30px;background:#0d1213}
.catalog-table th,.catalog-table td{padding:14px 16px;border:1px solid #293436;text-align:left;font-size:13px}
.catalog-table th{color:#9bd34b;text-transform:uppercase;font-size:10px;letter-spacing:1px}
.catalog-table td{color:#b9c3c0}
.catalog-quote{margin-top:38px;padding:42px;border:1px solid #40572c;background:linear-gradient(110deg,#182211,#0c1213)}
.catalog-quote h2{font-size:clamp(30px,4vw,50px);margin:10px 0}
@media(max-width:900px){.catalog-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.catalog-grid{grid-template-columns:1fr}.catalog-table{font-size:11px}.catalog-table th,.catalog-table td{padding:10px}}

/* ================= CARBONSAN V9 RFQ SYSTEM ================= */
.rfq-hero{padding:80px 0 45px;background:radial-gradient(circle at 80% 20%,rgba(155,211,75,.12),transparent 25%),linear-gradient(135deg,#11191a,#070b0c)}
.rfq-layout{display:grid;grid-template-columns:1.6fr .7fr;gap:20px;align-items:start}
.rfq-form{background:#0d1314;border:1px solid #2c3738;padding:32px}
.rfq-section{padding:28px 0;border-bottom:1px solid #263032}
.rfq-section:last-child{border-bottom:0}
.rfq-section h2{font-size:24px;margin:0 0 8px}
.rfq-section p{color:#aeb8b5;font-size:13px;margin:0 0 20px}
.rfq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.rfq-field{display:flex;flex-direction:column;gap:7px}
.rfq-field.full{grid-column:1/-1}
.rfq-field label{font-size:11px;letter-spacing:.8px;color:#b9c4c0;text-transform:uppercase}
.rfq-field input,.rfq-field select,.rfq-field textarea{background:#080d0e;border:1px solid #344143;color:#e2e9e6;padding:13px 14px;font:inherit;outline:none;width:100%}
.rfq-field textarea{min-height:120px;resize:vertical}
.rfq-field input:focus,.rfq-field select:focus,.rfq-field textarea:focus{border-color:#9bd34b}
.rfq-help{font-size:11px;color:#7f8d89;line-height:1.5}
.rfq-upload{border:1px dashed #4b5c51;padding:24px;background:#0a1011}
.rfq-side{position:sticky;top:20px}
.rfq-card{padding:25px;border:1px solid #2b3637;background:#111819;margin-bottom:15px}
.rfq-card h3{margin:0 0 12px;font-size:20px}
.rfq-card li{font-size:13px;color:#aeb8b5;margin:10px 0}
.rfq-success{display:none;padding:25px;border:1px solid #6e9938;background:#15200f;margin-top:20px}
.rfq-progress{display:flex;gap:4px;margin:20px 0 0}
.rfq-progress span{height:3px;flex:1;background:#2b3435}.rfq-progress span.active{background:#9bd34b}
.rfq-submit{margin-top:25px;display:flex;gap:15px;align-items:center;flex-wrap:wrap}
.rfq-status{font-size:12px;color:#aeb8b5}
@media(max-width:900px){.rfq-layout{grid-template-columns:1fr}.rfq-side{position:static}.rfq-grid{grid-template-columns:1fr}}