*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}:root{--carbon:#23282f;--carbon-deep:#14171c;--accent:#e63b2e;--ink:#16181d;--text:#262a30;--muted:#626870;--bg:#f7f8fa;--bg-alt:#eceef1;--line:#dcdfe4;--white:#ffffff;--shadow:0 10px 30px rgba(20, 23, 28, 0.10);--radius:10px}html{font-size:16px;scroll-behavior:smooth}body{font-family:segoe ui,Roboto,helvetica neue,Arial,pingfang sc,microsoft yahei,sans-serif;line-height:1.7;color:var(--text);background:var(--bg)}a{color:var(--carbon);text-decoration:none;transition:color .2s}a:hover{color:var(--accent);text-decoration:none}img{max-width:100%;height:auto;display:block}.container{max-width:1200px;margin:0 auto;padding:0 20px}.btn{display:inline-block;padding:13px 30px;border-radius:6px;font-weight:600;cursor:pointer;border:none;transition:all .2s;font-size:1rem}.btn-primary{background:var(--carbon);color:#fff;box-shadow:var(--shadow)}.btn-primary:hover{background:var(--carbon-deep);color:#fff}.btn-secondary{background:0 0;color:var(--carbon);border:2px solid var(--carbon)}.btn-secondary:hover{background:var(--carbon);color:#fff}.site-header{background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100;backdrop-filter:saturate(180%)blur(8px)}.nav-container{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;justify-content:space-between;align-items:center;height:68px}.nav-logo{font-size:1.5rem;font-weight:800;color:var(--ink);letter-spacing:-.5px;display:flex;align-items:center;gap:8px}.nav-logo::before{content:"";width:14px;height:22px;background:linear-gradient(180deg,var(--carbon),var(--accent));border-radius:3px;display:inline-block}.nav-menu{display:flex;list-style:none;gap:26px;align-items:center}.nav-menu a{color:var(--ink);font-weight:500;font-size:.95rem}.nav-menu a:hover{color:var(--carbon)}.nav-submenu{display:none;position:absolute;background:#fff;border:1px solid var(--line);border-radius:8px;list-style:none;padding:10px 0;min-width:240px;box-shadow:var(--shadow)}.nav-menu li{position:relative}.nav-menu li:hover .nav-submenu{display:block}.nav-submenu a{display:block;padding:9px 18px;font-weight:500;font-size:.9rem}.nav-submenu a:hover{background:var(--bg-alt)}.nav-toggle{display:none;flex-direction:column;gap:5px;background:0 0;border:none;cursor:pointer;padding:6px}.nav-toggle span{width:26px;height:3px;background:var(--ink);border-radius:2px}.language-switcher{position:relative;display:inline-flex;align-items:center;font-size:.8rem;margin-left:.5rem}.language-switcher .lang-toggle{display:inline-flex;align-items:center;gap:.3rem;background:0 0;border:1px solid rgba(111,69,24,.35);border-radius:5px;color:var(--ink);font:inherit;font-size:.8rem;line-height:1;padding:.35rem .6rem;cursor:pointer}.language-switcher .lang-arrow{font-size:.7rem;transition:transform .2s ease}.language-switcher.lang-open .lang-arrow{transform:rotate(180deg)}.language-switcher .lang-menu{position:absolute;top:calc(100% + 4px);right:0;list-style:none;margin:0;padding:.3rem 0;background:#fffdf8;border:1px solid #e0d5c5;border-radius:6px;box-shadow:0 8px 24px rgba(60,40,20,.15);display:none;z-index:60;min-width:150px}.language-switcher.lang-open .lang-menu{display:block}.language-switcher .lang-item{list-style:none}.language-switcher .lang-item a{display:block;padding:.4rem .9rem;color:var(--ink);text-decoration:none;font-size:.8rem}.language-switcher .lang-item a:hover{background:#f0e9df}.language-switcher .lang-item.lang-active a,.language-switcher .lang-item a.is-active{font-weight:600;color:#6f4518;background:#f5efe4}@media(max-width:768px){.language-switcher .lang-current{font-size:0}.language-switcher .lang-current::before{content:"Language";font-size:.8rem}}.main-content{min-height:calc(100vh - 68px - 220px)}.article{max-width:820px;margin:0 auto;padding:56px 20px}.article-header h1{font-size:2.3rem;margin-bottom:10px;line-height:1.2}.article-description{font-size:1.15rem;color:var(--muted);margin-bottom:16px}.article-meta{font-size:.875rem;color:#999;display:flex;gap:16px;align-items:center;flex-wrap:wrap}.article-tags{display:flex;gap:8px;flex-wrap:wrap}.tag{background:var(--bg-alt);padding:3px 12px;border-radius:12px;font-size:.75rem;color:var(--carbon)}.article-content{margin-top:32px}.article-content h2{font-size:1.6rem;margin:38px 0 16px;color:var(--ink);border-left:4px solid var(--accent);padding-left:14px}.article-content h3{font-size:1.25rem;margin:26px 0 12px;color:var(--carbon-deep)}.article-content p{margin-bottom:16px}.article-content ul,.article-content ol{margin:0 0 18px 22px}.article-content li{margin-bottom:8px}.article-content table{width:100%;border-collapse:collapse;margin:20px 0;font-size:.95rem}.article-content th,.article-content td{border:1px solid var(--line);padding:11px 15px;text-align:left}.article-content th{background:var(--carbon);color:#fff;font-weight:600}.article-content tbody tr:nth-child(even){background:var(--bg-alt)}.article-content img{border-radius:var(--radius);margin:22px 0;box-shadow:var(--shadow)}.article-content blockquote{border-left:4px solid var(--accent);padding:8px 18px;margin:20px 0;background:var(--bg-alt);color:var(--muted);font-style:italic}.section{padding:72px 0}.section:nth-child(even){background:var(--bg-alt)}.section-hero{position:relative;background-image:linear-gradient(180deg,rgba(12,14,18,.74),rgba(12,14,18,.84)),url(https://techcarbonworks.com/wp-content/uploads/2026/07/carbon-fiber-manufacturing-factory.webp.webp);background-size:cover;background-position:50%;padding:110px 0 100px;text-align:center;color:#fff}.section-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:6px;background:linear-gradient(90deg,var(--carbon),var(--accent))}.hero-title{font-size:3rem;font-weight:800;margin-bottom:18px;line-height:1.15;text-shadow:0 2px 18px rgba(0,0,0,.4)}.hero-description{font-size:1.3rem;color:#f3e9dc;max-width:760px;margin:0 auto 36px}.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}.section-hero .btn-secondary{color:#fff;border-color:rgba(255,255,255,.8)}.section-hero .btn-secondary:hover{background:#fff;color:var(--ink)}.section-title{font-size:2.1rem;text-align:center;margin-bottom:12px;color:var(--ink)}.section-title::after{content:"";display:block;width:60px;height:4px;background:var(--accent);margin:14px auto 0;border-radius:2px}.section-description{text-align:center;color:var(--muted);margin-bottom:44px;max-width:760px;margin-left:auto;margin-right:auto}.capabilities-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}.capability-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;text-align:left;box-shadow:var(--shadow);border-top:4px solid var(--carbon);transition:transform .2s}.capability-card:hover{transform:translateY(-4px)}.capability-card h3{font-size:1.15rem;color:var(--ink)}.equipment-list{margin-top:36px;text-align:center}.equipment-list h3{color:var(--ink);margin-bottom:16px}.equipment-list ul{list-style:none;display:flex;flex-wrap:wrap;gap:12px;justify-content:center}.equipment-list li{background:var(--bg-alt);border:1px solid var(--line);padding:8px 18px;border-radius:22px;font-size:.875rem;color:var(--carbon-deep);font-weight:500}.process-flow{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px}.process-step{display:flex;flex-direction:column;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 16px;min-width:130px;box-shadow:var(--shadow)}.step-number{width:44px;height:44px;border-radius:50%;background:linear-gradient(180deg,var(--carbon),var(--carbon-deep));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem}.step-name{font-size:.9rem;text-align:center;max-width:130px;font-weight:600;color:var(--ink)}.process-arrow{color:var(--accent);font-size:1.6rem}.spec-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}.spec-item{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;background:#fff;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow)}.spec-label{font-weight:600;color:var(--muted)}.spec-value{color:var(--carbon);font-weight:700}.materials-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}.material-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}.material-card h3{color:var(--carbon);margin-bottom:14px;font-size:1.2rem}.material-grades{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.grade-badge{background:var(--bg-alt);color:var(--carbon-deep);padding:5px 13px;border-radius:14px;font-size:.85rem;font-weight:600}.alloy-info{font-size:.82rem;color:var(--muted)}.industries-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}.industry-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);border-left:4px solid var(--accent)}.industry-card h3{margin-bottom:10px;color:var(--ink);font-size:1.2rem}.industry-applications{list-style:none;margin-top:14px}.industry-applications li{padding:5px 0;font-size:.9rem;color:var(--muted)}.industry-applications li::before{content:"▸ ";color:var(--accent)}.certs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}.cert-card{border:2px solid var(--line);border-radius:var(--radius);padding:28px;text-align:center;background:#fff;box-shadow:var(--shadow)}.cert-card h3{font-size:1.4rem;color:var(--carbon);margin-bottom:10px}.cert-link{font-size:.875rem;font-weight:600}.faq-accordion{max-width:820px;margin:0 auto}.faq-item{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:10px;overflow:hidden;background:#fff}.faq-question{width:100%;padding:18px 22px;background:#fff;border:none;text-align:left;font-size:1.02rem;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--ink)}.faq-icon{font-size:1.5rem;color:var(--accent);transition:transform .2s}.faq-open .faq-icon{transform:rotate(45deg)}.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s}.faq-open .faq-answer{max-height:600px;padding:0 22px 18px}.faq-answer p{color:var(--muted)}.section-rfq{background:linear-gradient(135deg,var(--carbon-deep),var(--carbon));color:#fff}.section-rfq .section-title{color:#fff}.section-rfq .section-title::after{background:var(--accent)}.section-rfq .section-description{color:#f0e4d6}.rfq-form{max-width:720px;margin:0 auto;background:#fff;padding:34px;border-radius:var(--radius);box-shadow:var(--shadow)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:6px;font-weight:600;font-size:.875rem;color:var(--ink)}.form-group input,.form-group textarea,.form-group select{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:6px;font-size:1rem;font-family:inherit}.form-group input:focus,.form-group textarea:focus{border-color:var(--carbon);outline:none}.btn-submit{width:100%;margin-top:10px}.list-page{max-width:900px;margin:0 auto;padding:56px 20px}.list-header h1{font-size:2.2rem;margin-bottom:10px;color:var(--ink)}.list-items{margin-top:36px}.list-item{padding:26px 0;border-bottom:1px solid var(--line)}.list-item h2{font-size:1.35rem;margin-bottom:10px}.list-item h2 a{color:var(--ink)}.list-item h2 a:hover{color:var(--carbon)}.list-item time{font-size:.875rem;color:#999}.blog-card-excerpt{color:var(--muted);margin-top:8px}.case-study{border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin:24px 0;background:#fff;box-shadow:var(--shadow)}.case-study-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.case-study-detail{display:flex;gap:8px;margin-bottom:8px}.detail-label{font-weight:600;color:var(--muted)}.case-study-section{margin-top:16px}.case-study-section h4{color:var(--carbon);margin-bottom:4px}.site-footer{background:#19130e;color:#cbb9a3;padding:56px 0 26px}.footer-container{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:36px}.footer-col h4{color:#fff;margin-bottom:16px;font-size:1.05rem;position:relative;padding-bottom:8px}.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:34px;height:3px;background:var(--accent);border-radius:2px}.footer-col ul{list-style:none}.footer-col ul li{padding:5px 0}.footer-col a{color:#cbb9a3;font-size:.92rem}.footer-col a:hover{color:var(--accent)}.footer-brand p{font-size:.92rem;color:#b6a48e;margin-top:12px}.footer-bottom{max-width:1200px;margin:36px auto 0;padding:18px 20px 0;border-top:1px solid #342a20;text-align:center;font-size:.85rem;color:#8c7c69}.footer-bottom a{color:var(--accent)}.section-content{max-width:980px;margin:0 auto}.section-content h2{font-size:1.7rem;margin:40px 0 16px;color:var(--ink);border-left:4px solid var(--accent);padding-left:14px}.section-content h3{font-size:1.25rem;margin:28px 0 12px;color:var(--carbon-deep)}.section-content p{margin-bottom:16px}.section-content ul,.section-content ol{margin:0 0 18px 22px}.section-content li{margin-bottom:8px}.section-content strong{color:var(--carbon-deep)}.section-content img{border-radius:var(--radius);margin:24px 0;box-shadow:var(--shadow)}.section-content table{width:100%;border-collapse:collapse;margin:22px 0;font-size:.95rem}.section-content th,.section-content td{border:1px solid var(--line);padding:11px 15px;text-align:left}.section-content th{background:var(--carbon);color:#fff;font-weight:600}.section-content tbody tr:nth-child(even){background:var(--bg-alt)}.section-content blockquote{border-left:4px solid var(--accent);padding:8px 18px;margin:20px 0;background:var(--bg-alt);color:var(--muted);font-style:italic}@media(max-width:768px){.nav-toggle{display:flex}.nav-menu{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 20px;border-bottom:1px solid var(--line);gap:14px;box-shadow:var(--shadow)}.nav-open .nav-menu{display:flex}.nav-submenu{position:static;box-shadow:none;border:none;padding:6px 0 0 12px;min-width:0}.hero-title{font-size:2rem}.hero-description{font-size:1.05rem}.hero-cta{flex-direction:column}.form-row{grid-template-columns:1fr}.process-flow{flex-direction:column}.process-arrow{transform:rotate(90deg)}.section{padding:52px 0}}