:root{--red:#c90000;--red2:#f12b2b;--ink:#1f2329;--muted:#5d6673;--soft:#f6f7f9;--line:rgba(201,0,0,.12);--shadow:0 16px 38px rgba(18,28,45,.09)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--ink);font-family:Arial,"Microsoft YaHei",sans-serif;line-height:1.75}a{text-decoration:none;color:inherit}.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(201,0,0,.08)}.header-inner{max-width:1360px;margin:auto;min-height:76px;padding:0 24px;display:grid;grid-template-columns:220px 1fr 120px;align-items:center;gap:24px}.logo img{max-height:50px;max-width:180px;display:block}.nav-core{display:flex;justify-content:center;gap:10px;white-space:nowrap}.nav-core a{padding:9px 17px;border-radius:999px;background:var(--soft);color:#303640;font-weight:700}.nav-core a:hover,.nav-core a.active{color:var(--red);background:rgba(201,0,0,.08)}.main-btn{display:inline-flex;justify-content:center;align-items:center;padding:11px 22px;border-radius:999px;color:#fff;background:linear-gradient(180deg,var(--red2),var(--red) 55%,#a80000);font-weight:800;box-shadow:0 8px 20px rgba(201,0,0,.22)}.register-btn{justify-self:end}.menu-toggle{display:none;border:0;background:var(--soft);font-size:23px;border-radius:12px;width:44px;height:44px}.site-shell{max-width:1360px;margin:auto;padding:24px;display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px}.side-category{position:sticky;top:98px;align-self:start;background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:var(--shadow);max-height:calc(100vh - 120px);overflow:auto}.side-category strong{display:block;padding:10px 12px;color:var(--red)}.side-category a{display:block;padding:9px 12px;border-radius:11px;color:#39404a}.side-category a:hover,.side-category a.active{color:var(--red);background:rgba(201,0,0,.07)}.page-main{min-width:0}.banner-slider{position:relative;overflow:hidden;border-radius:24px;background:#f7f8fa;box-shadow:var(--shadow);height:340px;margin-bottom:34px}.slides,.slide{height:100%}.slide{display:none}.slide.active{display:block}.slide img{width:100%;height:100%;object-fit:contain}.slider-arrow{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border:0;border-radius:50%;background:rgba(255,255,255,.9);font-size:24px;cursor:pointer;box-shadow:0 6px 18px rgba(0,0,0,.14)}.slider-arrow.prev{left:16px}.slider-arrow.next{right:16px}.slider-dots{position:absolute;left:0;right:0;bottom:14px;display:flex;justify-content:center;gap:8px}.slider-dots button{width:9px;height:9px;border:0;border-radius:50%;background:#c9cdd3}.slider-dots button.active{background:var(--red)}.section{margin:0 0 34px}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:16px}.section-title,h1,h2,h3{color:var(--red);line-height:1.3}.section-title,h2{font-size:28px;margin:0}.lead{font-size:17px;color:var(--muted)}.hero-panel,.split-panel,.notice-panel{border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow);padding:28px}.split-panel{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}.content-img{width:100%;height:260px;object-fit:contain;background:#f7f8fa;border-radius:18px}.grid{display:grid;gap:18px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.card,.product-card,.review-card,.faq-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:20px}.card img,.product-card img{width:100%;height:170px;object-fit:contain;background:#f7f8fa;border-radius:14px;margin-bottom:14px}.card p,.product-card p,.review-card p,.faq-card p{color:var(--muted)}.stats{background:linear-gradient(135deg,#be0000,#e51d2a);border-radius:22px;padding:20px;color:#fff;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;box-shadow:0 16px 34px rgba(201,0,0,.2)}.stat{padding:12px;border-right:1px solid rgba(255,255,255,.25)}.stat:last-child{border-right:0}.stat strong{font-size:22px;display:block}.horizontal-scroll{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(230px,1fr);gap:16px;overflow-x:auto;padding-bottom:8px}.tag{display:inline-block;color:var(--red);background:rgba(201,0,0,.08);padding:4px 10px;border-radius:999px;font-size:13px;font-weight:700}.page-hero{padding:36px;border-radius:24px;background:linear-gradient(145deg,#fff 25%,#f6f7f9);border:1px solid var(--line);margin-bottom:26px}.page-hero h1{font-size:38px;margin:0 0 12px}.page-hero p{max-width:780px;color:var(--muted)}.check-list{padding-left:20px}.check-list li{margin:8px 0}.mobile-drawer,.drawer-mask{display:none}footer{background:#11151c;color:#e7ecf3;margin-top:50px}.footer-grid{max-width:1180px;margin:auto;padding:48px 24px;display:grid;grid-template-columns:1.3fr .7fr 1fr;gap:38px}.footer-grid a{display:block;color:#cfd6df;margin:7px 0}.footer-grid h3{color:#fff}.footer-logo{max-height:48px;max-width:180px}.copyright{text-align:center;border-top:1px solid rgba(255,255,255,.08);padding:16px;color:#9fa8b5}.mobile-bottom-nav{display:none}@media(max-width:1100px){.site-shell{grid-template-columns:1fr}.side-category{display:none}.header-inner{grid-template-columns:170px 1fr 110px}.nav-core a{padding:8px 12px}.grid-4{grid-template-columns:repeat(2,1fr)}}@media(max-width:760px){body{padding-bottom:70px}.site-header{position:sticky}.header-inner{grid-template-columns:48px 1fr 88px;padding:0 12px;min-height:66px;gap:8px}.menu-toggle{display:block}.logo{justify-self:center}.logo img{max-height:42px;max-width:150px}.nav-core{display:none}.register-btn{padding:9px 15px}.site-shell{padding:14px}.banner-slider{height:190px;border-radius:16px}.grid-2,.grid-3,.grid-4,.split-panel,.stats,.footer-grid{grid-template-columns:1fr}.stats{gap:0}.stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.2)}.stat:last-child{border-bottom:0}.content-img{height:210px}.page-hero{padding:24px}.page-hero h1{font-size:30px}.section-title,h2{font-size:24px}.mobile-drawer{display:block;position:fixed;z-index:100;left:0;top:0;bottom:0;width:84%;max-width:320px;background:#fff;transform:translateX(-105%);transition:.25s;padding:18px;overflow:auto}.mobile-drawer.open{transform:translateX(0)}.drawer-mask{display:block;position:fixed;z-index:90;inset:0;background:rgba(0,0,0,.45);opacity:0;visibility:hidden;transition:.25s}.drawer-mask.show{opacity:1;visibility:visible}.drawer-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:16px;border-bottom:1px solid #eee}.drawer-head img{max-width:150px;max-height:44px}.drawer-close{border:0;background:#f3f4f6;border-radius:10px;font-size:25px;width:40px;height:40px}.mobile-drawer nav a{display:block;padding:11px 12px;border-radius:10px}.mobile-drawer nav a.active{color:var(--red);background:rgba(201,0,0,.08)}body.drawer-open{overflow:hidden}.mobile-bottom-nav{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;z-index:70;left:0;right:0;bottom:0;background:#fff;border-top:1px solid #e5e7eb;box-shadow:0 -5px 18px rgba(0,0,0,.06)}.mobile-bottom-nav a{text-align:center;padding:13px 4px;font-weight:700}.mobile-bottom-nav a:active{color:var(--red)}}