:root{--brand-bg: #f8fafc;--brand-bg-light: #f0f9ff;--brand-blue: #1b8ecf;--brand-blue-deep: #265dab;--brand-teal: #0d9488;--brand-text: #0f172a;--brand-text-secondary: #64748b;--brand-text-muted: #94a3b8;--brand-border: #e2e8f0;--font-sans: "Noto Sans SC", system-ui, -apple-system, sans-serif;--font-serif: "Noto Serif SC", serif;--font-mono: "JetBrains Mono", monospace}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-sans);color:var(--brand-text);background:var(--brand-bg);line-height:1.7;-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{color:var(--brand-blue);text-decoration:none}.container{max-width:1120px;margin:0 auto;padding:0 24px}.nav{position:sticky;top:0;z-index:100;background:#f8fafcd9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--brand-border)}.nav-inner{display:flex;align-items:center;gap:32px;height:64px;max-width:none;padding:0 40px}.nav-brand{display:flex;align-items:center}.nav-brand img{height:42px;width:auto}.nav-links{display:flex;gap:28px;margin-left:auto}.nav-links a{color:var(--brand-text-secondary);font-size:14px;transition:color .2s}.nav-links a:hover{color:var(--brand-blue)}.nav-cta{background:var(--brand-blue);color:#fff;font-size:13px;padding:8px 16px;border-radius:999px;transition:background .2s;white-space:nowrap}.nav-cta:hover{background:var(--brand-blue-deep)}.nav-toggle{display:none;background:#fff;border:1px solid var(--brand-border);border-radius:8px;font-size:16px;line-height:1;padding:8px 11px;color:var(--brand-text);cursor:pointer}.nav-mobile{display:none;flex-direction:column;padding:4px 40px 12px;border-top:1px solid var(--brand-border);background:#f8fafcfa}.nav-mobile a{padding:13px 0;color:var(--brand-text);font-size:15px;border-bottom:1px dashed var(--brand-border)}.nav-mobile a:last-child{border-bottom:none;color:var(--brand-blue);font-weight:600}.hero{padding:56px 0 72px;background:linear-gradient(180deg,var(--brand-bg-light) 0%,var(--brand-bg) 100%)}.eyebrow{font-family:var(--font-mono);font-size:13px;color:var(--brand-teal);margin-bottom:14px}.hero-title{font-family:var(--font-serif);font-size:52px;font-weight:900;line-height:1.2;letter-spacing:.02em}.hero-title-accent{color:var(--brand-blue)}.hero-sub{font-size:20px;font-weight:600;margin-top:18px}.hero-desc{max-width:720px;color:var(--brand-text-secondary);margin-top:14px;font-size:15px}.hero-actions{display:flex;gap:14px;margin-top:28px}.btn{display:inline-block;padding:12px 26px;border-radius:10px;font-size:15px;font-weight:600;transition:all .2s}.btn-primary{background:var(--brand-blue);color:#fff;box-shadow:0 4px 14px #1b8ecf59}.btn-primary:hover{background:var(--brand-blue-deep)}.btn-ghost{border:1px solid var(--brand-border);color:var(--brand-text);background:#fff}.btn-ghost:hover{border-color:var(--brand-blue);color:var(--brand-blue)}.hero-products{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:48px}.hero-product{position:relative;background:#fff;border:1px solid var(--brand-border);border-radius:14px;padding:18px;display:flex;flex-direction:column;gap:6px;color:var(--brand-text);transition:transform .2s,box-shadow .2s,border-color .2s}.hero-product:hover{transform:translateY(-3px);box-shadow:0 10px 30px #0f172a14;border-color:var(--brand-blue)}.hero-product--featured{border-color:var(--brand-blue);background:linear-gradient(160deg,#fff 0%,var(--brand-bg-light) 100%)}.hero-product-img{width:100%;height:120px;object-fit:cover;border-radius:8px;border:1px solid var(--brand-border)}.isolar-mark{width:100%;height:120px;background:#fff;border:1px solid var(--brand-border);border-radius:8px}.hero-product-tag{position:absolute;top:12px;right:12px;font-family:var(--font-mono);font-size:11px;color:var(--brand-blue-deep);background:var(--brand-bg-light);border:1px solid var(--brand-border);padding:2px 8px;border-radius:999px}.hero-product strong{font-size:16px;margin-top:8px}.hero-product-desc{font-size:13px;color:var(--brand-text-secondary)}.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:40px;padding-top:32px;border-top:1px solid var(--brand-border)}.stat strong{display:block;font-family:var(--font-serif);font-size:28px;font-weight:900;color:var(--brand-blue-deep)}.stat span{font-size:13px;color:var(--brand-text-secondary)}.section{padding:88px 0}.section--alt{background:#fff;border-top:1px solid var(--brand-border);border-bottom:1px solid var(--brand-border)}.section-title{font-family:var(--font-serif);font-size:34px;font-weight:900}.section-desc{color:var(--brand-text-secondary);margin-top:10px;max-width:720px;font-size:15px}.card-grid{display:grid;gap:20px;margin-top:40px}.card-grid--2{grid-template-columns:repeat(2,1fr)}.card-grid--3{grid-template-columns:repeat(3,1fr)}.card-grid--4{grid-template-columns:repeat(4,1fr)}.card{background:#fff;border:1px solid var(--brand-border);border-radius:14px;padding:26px;transition:border-color .2s,box-shadow .2s}.section--alt .card{background:var(--brand-bg)}.card:hover{border-color:var(--brand-blue);box-shadow:0 8px 24px #0f172a0f}.card h3{font-size:18px;margin-bottom:10px}.card-desc{font-size:14px;color:var(--brand-text-secondary)}.card-list{list-style:none;margin-top:16px}.card-list li{font-size:14px;color:var(--brand-text-secondary);padding:6px 0 6px 20px;position:relative;border-bottom:1px dashed var(--brand-border)}.card-list li:last-child{border-bottom:none}.card-list li:before{content:"";position:absolute;left:0;top:14px;width:8px;height:8px;border-radius:2px;background:var(--brand-teal)}.mini-card{background:#fff;border:1px solid var(--brand-border);border-radius:12px;padding:18px 20px}.mini-card h4{font-size:15px;margin-bottom:4px}.mini-card p{font-size:13px;color:var(--brand-text-secondary)}.works{display:flex;flex-direction:column;gap:28px;margin-top:40px}.work{display:grid;grid-template-columns:380px 1fr;gap:32px;background:var(--brand-bg);border:1px solid var(--brand-border);border-radius:16px;padding:28px;align-items:center}.work--featured{border-color:var(--brand-blue);box-shadow:0 12px 36px #1b8ecf1f;background:linear-gradient(120deg,#fff 0%,var(--brand-bg-light) 100%)}.work-visual img{width:100%;height:220px;object-fit:cover;border-radius:10px;border:1px solid var(--brand-border)}.work-isolar-visual{background:#fff;border:1px solid var(--brand-border);border-radius:10px;padding:14px;display:flex;flex-direction:column;gap:12px}.work-isolar-visual .isolar-mark{height:150px;border:none;background:transparent}.work-isolar-badges{display:flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font-mono);font-size:12px;color:var(--brand-blue-deep)}.work-isolar-badges span:not(:nth-child(2n)){background:var(--brand-bg-light);border:1px solid var(--brand-border);border-radius:999px;padding:3px 12px}.work-meta{display:flex;gap:12px;align-items:center;margin-bottom:8px}.work-tag{font-family:var(--font-mono);font-size:12px;color:var(--brand-teal);border:1px solid var(--brand-teal);border-radius:999px;padding:2px 10px}.work-year{font-family:var(--font-mono);font-size:12px;color:var(--brand-text-muted)}.work-body h3{font-family:var(--font-serif);font-size:24px;font-weight:700;margin-bottom:10px}.work-tags{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.work-tags li{font-size:12px;color:var(--brand-text-secondary);background:#fff;border:1px solid var(--brand-border);border-radius:999px;padding:4px 12px}.section--alt .work-tags li,.work .work-tags li{background:#fff}.work-link{display:inline-block;margin-top:20px;font-weight:600;font-size:14px}.work-link:hover{color:var(--brand-blue-deep)}.topo{margin-top:40px;background:#0f172a;border-radius:16px;padding:28px;color:#e2e8f0}.topo-master{border:1px solid #334155;border-radius:10px;padding:14px 18px;display:flex;align-items:center;gap:14px;margin-bottom:16px}.topo-master code{font-family:var(--font-mono);font-size:13px;color:#7dd3fc}.topo-label{font-family:var(--font-mono);font-size:11px;color:#94a3b8;text-transform:uppercase;letter-spacing:.08em}.topo-nodes{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.topo-node{border:1px solid #334155;border-radius:10px;padding:14px 16px;display:flex;flex-direction:column;gap:4px;font-size:13px}.topo-node--accent{border-color:var(--brand-blue);background:#1b8ecf1f}.topo .card-grid{margin-top:16px}.topo+.card-grid .mini-card{background:#fff}.code-block{margin-top:40px;background:#0f172a;border-radius:14px;padding:24px 28px;overflow-x:auto}.code-block .code-comment{font-family:var(--font-mono);font-size:13px;color:#64748b;margin-bottom:10px}.code-block pre{font-family:var(--font-mono);font-size:14px;line-height:1.8;color:#7dd3fc}.miniprogram{display:grid;grid-template-columns:1fr 280px;gap:48px;align-items:center}.miniprogram-qr{background:#fff;border:1px solid var(--brand-border);border-radius:16px;padding:28px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:6px;box-shadow:0 12px 32px #0f172a14}.miniprogram-qr img{border-radius:10px;margin-bottom:8px}.miniprogram-qr span{font-size:12px;color:var(--brand-text-muted)}.step{background:var(--brand-bg);border:1px solid var(--brand-border);border-radius:14px;padding:24px}.step-no{font-family:var(--font-mono);font-size:26px;font-weight:600;color:var(--brand-blue)}.step h4{font-size:16px;margin:10px 0 6px}.step p{font-size:13px;color:var(--brand-text-secondary)}.footer{background:#fff;border-top:1px solid var(--brand-border);color:var(--brand-text-secondary);padding:64px 0 0}.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:48px}.footer .nav-brand{margin-bottom:14px}.footer-brand p{font-size:13px;color:var(--brand-text-secondary);max-width:420px}.footer-col h5{color:var(--brand-text);font-size:14px;margin-bottom:14px}.footer-col a{display:block;color:var(--brand-text-secondary);font-size:13px;padding:4px 0;transition:color .2s}.footer-col a:hover{color:var(--brand-blue)}.footer-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--brand-border);padding-top:20px;padding-bottom:20px;font-size:12px;color:var(--brand-text-muted)}.footer-bottom a{color:var(--brand-text-muted)}.footer-bottom a:hover{color:var(--brand-blue)}.cta-float{position:fixed;right:24px;bottom:24px;z-index:9999;background:var(--brand-blue);color:#fff;padding:12px 20px;border-radius:999px;font-size:14px;box-shadow:0 4px 16px #1b8ecf66;transition:background .2s}.cta-float:hover{background:var(--brand-blue-deep)}@media(max-width:960px){.nav-links{display:none}.nav-cta{margin-left:auto}.nav-toggle{display:block}.nav-mobile{display:flex}.nav-inner{padding:0 20px;gap:12px}.nav-mobile{padding:4px 20px 12px}.hero-title{font-size:38px}.hero-products,.card-grid--3,.card-grid--4,.topo-nodes{grid-template-columns:repeat(2,1fr)}.work,.miniprogram{grid-template-columns:1fr}.miniprogram-qr{max-width:300px}.footer-inner{grid-template-columns:1fr;gap:28px}}@media(max-width:600px){.nav-cta{font-size:12px;padding:7px 12px}.nav-brand img{height:34px}.hero-title{font-size:30px}.hero-products,.hero-stats,.card-grid--2,.card-grid--3,.card-grid--4,.topo-nodes{grid-template-columns:1fr}.section{padding:56px 0}.footer-bottom{flex-direction:column;gap:8px}}