:root{--navy:#081323;--navy2:#0d1d32;--ink:#111b2a;--muted:#6d7887;--blue:#4b9fff;--cyan:#80d7f3;--paper:#f4f6f8;--line:#e3e8ee;--white:#fff;--font:'DM Sans',sans-serif;--display:'Manrope',sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input{font:inherit}.container{width:min(1180px,calc(100% - 48px));margin:0 auto}.topline{background:#050d18;color:#9eabba;font-size:9px;letter-spacing:.19em;font-weight:700}.topline-inner{height:34px;display:flex;align-items:center;justify-content:space-between}.header{position:sticky;top:0;z-index:20;background:rgba(8,19,35,.97);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.08)}.nav-wrap{height:82px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px;color:#fff}.brand-mark{height:42px;width:42px;border:1px solid rgba(128,215,243,.65);display:grid;place-items:center;font:800 16px var(--display);letter-spacing:-.12em;color:#fff}.brand-mark span{color:var(--cyan);font-size:12px;padding:0 2px}.brand-copy{display:flex;flex-direction:column;gap:4px}.brand-copy strong{font:800 13px var(--display);letter-spacing:.08em}.brand-copy i{color:var(--cyan);font-style:normal}.brand-copy small{font-size:8px;letter-spacing:.2em;color:#8c9aad}.nav{display:flex;align-items:center;gap:36px;color:#d4dce6;font-size:12px;font-weight:600}.nav a{transition:color .2s}.nav a:hover{color:var(--cyan)}.nav-cta{border:1px solid rgba(128,215,243,.45);padding:12px 17px}.nav-cta span{color:var(--cyan);margin-left:12px}.menu-toggle{display:none;background:none;border:0;color:white}.hero{position:relative;overflow:hidden;background:radial-gradient(ellipse at 75% 50%,#173d65 0,#0b2038 38%,#081323 75%);color:#fff;min-height:610px}.hero-grid{position:absolute;inset:0;opacity:.15;background-image:linear-gradient(rgba(255,255,255,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.09) 1px,transparent 1px);background-size:68px 68px;mask-image:linear-gradient(90deg,transparent,#000 65%)}.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.03fr .97fr;align-items:center;min-height:550px;padding-top:25px;padding-bottom:32px}.hero-copy{padding:38px 0 24px}.eyebrow,.section-kicker{font-size:9px;font-weight:700;letter-spacing:.2em;color:#7bbde9}.eyebrow{display:flex;align-items:center;gap:12px;color:#a9c2d9}.eyebrow-line{height:1px;width:30px;background:var(--cyan)}h1,h2,h3,p{margin-top:0}h1,h2{font-family:var(--display);letter-spacing:-.055em}h1{font-size:clamp(46px,5.7vw,76px);line-height:1.04;margin:25px 0 22px;font-weight:800}h1 em,h2 em{font-style:normal;color:var(--cyan)}.hero-lead{max-width:490px;color:#b6c4d3;font-size:15px;line-height:1.8}.hero-actions{display:flex;align-items:center;gap:14px;margin-top:32px}.button{display:inline-flex;align-items:center;justify-content:center;gap:24px;padding:15px 19px;font-size:11px;font-weight:700;letter-spacing:.03em;transition:transform .2s,background .2s}.button:hover{transform:translateY(-2px)}.button-primary{background:var(--cyan);color:#071525}.button-primary:hover{background:#a2e6fb}.button-primary span{font-size:16px}.button-ghost{border:1px solid rgba(255,255,255,.22);color:#e7edf3}.hero-footnote{margin-top:46px;color:#91a5ba;font-size:10px;letter-spacing:.06em}.pulse{display:inline-block;width:6px;height:6px;background:#71d9b2;border-radius:50%;margin-right:9px;box-shadow:0 0 0 5px rgba(113,217,178,.1)}.hero-visual{position:relative;min-height:440px;display:grid;place-items:center}.hero-orbit{position:absolute;border:1px solid rgba(128,215,243,.17);border-radius:50%;aspect-ratio:1}.orbit-one{width:430px}.orbit-two{width:320px;border-style:dashed;opacity:.6}.hero-radio{position:relative;z-index:2;width:min(100%,520px);height:380px;object-fit:contain;filter:drop-shadow(0 30px 35px rgba(0,0,0,.45));mix-blend-mode:screen}.hero-tag{position:absolute;z-index:3;font-size:9px;letter-spacing:.16em;font-weight:700;color:#d9e7f2}.tag-top{top:52px;left:5%}.tag-bottom{bottom:32px;right:3%;color:#8fa7bd}.tag-bottom span{margin-left:18px;color:var(--cyan)}.tag-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--cyan);margin-right:8px}.hero-glow{position:absolute;width:280px;height:280px;border-radius:50%;background:rgba(51,151,224,.18);filter:blur(75px)}.hero-bottom{position:relative;z-index:2;display:flex;gap:50px;border-top:1px solid rgba(255,255,255,.13);padding:17px 0 20px;color:#7f94a9;font-size:8px;letter-spacing:.16em;font-weight:700}.section-pad{padding:105px 0}.intro{background:#f8fafb}.intro-grid{display:grid;grid-template-columns:1fr 1fr;align-items:end;gap:50px}.section-kicker{color:#5385a9}h2{font-size:clamp(36px,4vw,52px);line-height:1.1;margin:18px 0 0;font-weight:800}h2 em{color:#3688c9}.intro-text{max-width:490px;color:#697789;font-size:14px;line-height:1.9;margin-bottom:4px}.brand-panels{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:52px}.brand-panel{position:relative;overflow:hidden;min-height:270px;padding:34px 38px;color:#fff;display:flex;align-items:center}.zastone-panel{background:linear-gradient(120deg,#0a1a2e,#133a61)}.tecsun-panel{background:linear-gradient(120deg,#101a28,#263b4c)}.brand-panel-content{position:relative;z-index:2;max-width:330px}.brand-label{font-size:8px;letter-spacing:.2em;color:#8fb5d4;font-weight:700}.brand-word{font:800 38px var(--display);letter-spacing:.06em;margin:22px 0 10px}.brand-word span{font-size:10px;vertical-align:top;margin-left:3px}.tecsun-word{letter-spacing:.16em}.brand-panel p{max-width:310px;color:#b4c5d5;font-size:12px;line-height:1.7}.brand-panel a{display:inline-flex;align-items:center;gap:22px;margin-top:14px;color:var(--cyan);font-size:10px;font-weight:700;letter-spacing:.04em}.brand-panel a b{font-size:15px}.panel-symbol{position:absolute;right:15px;bottom:-76px;font:800 250px var(--display);color:rgba(255,255,255,.045);line-height:1}.tecsun-symbol{right:28px;color:rgba(128,215,243,.06)}.products-section{background:#edf1f4}.products-heading{display:flex;align-items:end;justify-content:space-between;gap:40px}.products-heading p{max-width:380px;color:#738092;font-size:12px;line-height:1.8;margin-bottom:4px}.catalog-tools{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:43px 0 24px;border-bottom:1px solid #d9e0e7}.filter-list{display:flex;gap:25px}.filter{position:relative;border:0;background:none;color:#7a8795;padding:0 0 16px;font-size:10px;font-weight:700;cursor:pointer}.filter.active{color:#14253a}.filter.active:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:#278cc9}.filter span{font-size:8px;color:#9ba6b2;margin-left:5px}.search-box{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid #e0e6ec;padding:9px 12px;margin-bottom:10px}.search-box span{font-size:20px;color:#7c8998}.search-box input{width:155px;border:0;outline:0;background:transparent;font-size:10px;color:#1a2b40}.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}.product-card{background:#fff;border:1px solid #e6ebef;transition:transform .25s,box-shadow .25s;min-width:0}.product-card:hover{transform:translateY(-5px);box-shadow:0 16px 35px rgba(18,39,61,.09)}.product-card[hidden]{display:none}.product-image{height:220px;position:relative;display:grid;place-items:center;background:linear-gradient(135deg,#f9fbfc,#edf2f6);overflow:hidden;padding:18px}.product-image img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply;transition:transform .35s}.product-card:hover .product-image img{transform:scale(1.04)}.tecsun-image{background:#f6f6f3}.product-brand{position:absolute;top:14px;left:15px;z-index:1;font-size:8px;letter-spacing:.17em;color:#7e8a98;font-weight:800}.product-info{padding:20px 20px 18px}.product-type{font-size:8px;letter-spacing:.14em;color:#648aa7;font-weight:700}.product-info h3{font:800 25px var(--display);letter-spacing:-.04em;margin:9px 0}.product-info p{min-height:55px;color:#788493;font-size:11px;line-height:1.7;margin-bottom:14px}.specs{display:flex;flex-wrap:wrap;gap:6px}.specs span,.modal-specs span{font-size:8px;font-weight:700;color:#48647e;background:#edf5fa;padding:6px 8px}.product-link{display:flex;justify-content:space-between;align-items:center;width:100%;margin-top:18px;padding:13px 0 0;border:0;border-top:1px solid #e9edf1;background:none;color:#1a344e;font-size:10px;font-weight:700;cursor:pointer;text-align:left}.product-link b{color:#398fca;font-size:15px}.no-results{padding:30px;text-align:center;color:#718094;font-size:13px}.catalog-note{margin-top:24px;color:#8793a0;font-size:9px;line-height:1.7}.feature-section{background:#fff}.feature-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:90px}.feature-intro p{max-width:340px;margin-top:24px;color:#718092;font-size:13px;line-height:1.8}.feature-list{border-top:1px solid #e5eaf0}.feature-item{display:grid;grid-template-columns:48px 1fr 20px;gap:20px;align-items:start;padding:24px 0;border-bottom:1px solid #e5eaf0}.feature-number{font:700 11px var(--display);color:#4c9aca;padding-top:4px}.feature-item h3{font:700 15px var(--display);margin:0 0 7px}.feature-item p{color:#82909e;font-size:11px;line-height:1.7;margin:0}.feature-arrow{color:#4d9acb;font-size:17px}.contact-section{background:linear-gradient(110deg,#0a1b2e,#112f4c);color:#fff;padding:84px 0}.contact-inner{display:grid;grid-template-columns:1fr 390px;align-items:center;gap:70px}.contact-section .section-kicker{color:#83bfe4}.contact-section h2{margin-bottom:19px}.contact-section h2 em{color:var(--cyan)}.contact-section p{max-width:440px;color:#a9bbcc;font-size:13px;line-height:1.8}.contact-card{background:#fff;color:#17283c;padding:28px 30px}.contact-card-top{display:flex;align-items:center;gap:12px;color:#68859f;font-size:8px;font-weight:700;letter-spacing:.16em}.contact-icon{display:grid;place-items:center;width:30px;height:30px;background:#e7f5fb;color:#248ac3;font-size:17px}.contact-card h3{font:800 22px var(--display);margin:23px 0 9px}.contact-card p{font-size:11px;color:#788595;line-height:1.8;margin-bottom:22px}.footer{background:#06101d;color:#fff;padding:35px 0 18px}.footer-main{display:flex;align-items:center;justify-content:space-between;gap:30px;padding-bottom:30px}.footer-main>p{max-width:320px;color:#8293a5;font-size:10px;line-height:1.7;margin:0}.back-top{font-size:10px;color:var(--cyan)}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:16px;display:flex;justify-content:space-between;gap:25px;color:#718195;font-size:8px;line-height:1.7}.modal{position:fixed;inset:0;z-index:50;display:none;place-items:center;padding:20px}.modal.open{display:grid}.modal-backdrop{position:absolute;inset:0;background:rgba(3,10,19,.76);backdrop-filter:blur(5px)}.modal-card{position:relative;z-index:1;width:min(520px,100%);background:#fff;padding:40px;box-shadow:0 25px 90px rgba(0,0,0,.35)}.modal-close{position:absolute;right:18px;top:13px;border:0;background:none;font-size:27px;color:#637386;cursor:pointer}.modal-kicker{font-size:9px;letter-spacing:.18em;color:#4d93bf;font-weight:700}.modal-card h2{font-size:38px;margin:14px 0}.modal-card>p{font-size:13px;color:#6e7c8b;line-height:1.8}.modal-specs{display:flex;flex-wrap:wrap;gap:7px;margin:22px 0}.modal-disclaimer{font-size:10px!important;color:#8a96a2!important}.modal-source{margin-top:8px}
@media(max-width:950px){.product-grid{grid-template-columns:repeat(2,1fr)}.hero-inner{grid-template-columns:1fr .85fr}.hero-radio{height:330px}.feature-grid{gap:45px}.contact-inner{grid-template-columns:1fr 340px;gap:35px}}
@media(max-width:700px){.container{width:min(100% - 34px,540px)}.topline-inner{font-size:7px;letter-spacing:.12em}.topline-inner span:last-child{display:none}.nav-wrap{height:70px}.menu-toggle{display:flex;flex-direction:column;gap:6px;padding:10px}.menu-toggle span{width:23px;height:1px;background:#fff}.nav{display:none;position:absolute;top:70px;left:0;right:0;background:#081323;padding:22px 24px 28px;flex-direction:column;align-items:stretch;gap:20px;border-top:1px solid rgba(255,255,255,.1)}.nav.open{display:flex}.nav-cta{text-align:center}.hero-inner{grid-template-columns:1fr;min-height:0;padding-top:48px}.hero-copy{padding:0}.hero-visual{min-height:300px;margin-top:10px}.hero-radio{height:280px;width:100%}.orbit-one{width:300px}.orbit-two{width:230px}.tag-top{top:24px;left:4%}.tag-bottom{bottom:10px;right:2%}.hero-bottom{gap:15px;justify-content:space-between;font-size:6px;letter-spacing:.08em}.section-pad{padding:72px 0}.intro-grid{grid-template-columns:1fr;gap:22px}.intro-text{font-size:13px}.brand-panels{grid-template-columns:1fr;margin-top:32px}.brand-panel{min-height:235px;padding:28px}.products-heading{display:block}.products-heading p{margin-top:20px}.catalog-tools{align-items:flex-start;flex-direction:column;margin-top:30px}.filter-list{gap:17px;flex-wrap:wrap}.filter{font-size:9px}.search-box{width:100%;margin-bottom:14px}.search-box input{width:100%}.product-grid{gap:10px}.product-image{height:160px;padding:10px}.product-info{padding:15px 13px}.product-info h3{font-size:22px}.product-info p{font-size:10px;min-height:67px}.specs span{font-size:7px;padding:5px 6px}.product-link{font-size:9px}.feature-grid{grid-template-columns:1fr;gap:35px}.contact-inner{grid-template-columns:1fr;gap:28px}.contact-card{padding:24px}.footer-main{align-items:flex-start;flex-direction:column}.footer-bottom{flex-direction:column;gap:8px}.modal-card{padding:32px 24px}.modal-card h2{font-size:32px}}
@media(max-width:390px){.product-grid{grid-template-columns:1fr}.product-image{height:230px}.product-info p{min-height:0}.hero-actions{align-items:stretch;flex-direction:column}.button{width:100%}.hero-bottom span:last-child{display:none}}