:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-primary-soft: #eff6ff;--color-text: #0f172a;--color-muted: #475569;--color-line: #e2e8f0;--color-bg: #ffffff;--color-bg-alt: #f8fafc;--radius: 12px;--container: 1200px;--font: PingFang SC, Microsoft YaHei, sans-serif;--shadow: 0 10px 30px rgba(15, 23, 42, .08)}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}html,body{margin:0;padding:0;max-width:100%;overflow-x:hidden}body{font-family:var(--font);font-size:16px;line-height:1.7;color:var(--color-text);background:var(--color-bg)}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}button{font-family:inherit}h1,h2,h3,p{margin:0}.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}.section{padding:80px 0;scroll-margin-top:88px}.section-alt{background:var(--color-bg-alt)}.section-title{font-size:32px;font-weight:700;line-height:1.25}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .3s ease,box-shadow .3s ease,background .3s ease}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark);box-shadow:var(--shadow)}.btn-ghost{background:#fff;color:var(--color-primary);border-color:#bfdbfe}.btn-ghost:hover{background:var(--color-primary-soft)}.nav{position:fixed;top:0;left:0;right:0;z-index:40;background:#ffffff9e;backdrop-filter:blur(20px) saturate(1.35);-webkit-backdrop-filter:blur(20px) saturate(1.35);border-bottom:1px solid rgba(226,232,240,.55);transition:background .3s ease,box-shadow .3s ease}.nav.is-solid,.nav.is-open{background:#ffffffd1;box-shadow:0 8px 24px #0f172a0f}.nav-inner{position:relative;min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:10px;min-width:0}.brand-logo,.brand-mark{width:36px;height:36px;border-radius:10px;object-fit:cover}.brand-mark{display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;background:linear-gradient(135deg,#2563eb,#7c3aed)}.brand-text{display:flex;flex-direction:column;min-width:0}.brand-text strong{font-size:16px}.brand-text small{color:var(--color-muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:220px}.menu{display:flex;align-items:center;gap:22px}.menu a{color:var(--color-muted);font-size:14px}.menu a.is-current,.menu a:hover{color:var(--color-primary)}.burger{display:none;border:0;background:transparent;cursor:pointer}.hero{padding:144px 0 88px;background:linear-gradient(180deg,#eff6ff,#fff);scroll-margin-top:0}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}.hero .kicker{margin:0 0 10px;color:var(--color-primary);font-size:13px;font-weight:600;letter-spacing:.08em}.hero h1{font-size:44px;font-weight:700;line-height:1.2;letter-spacing:-.03em}.hero .sub{margin-top:12px;color:var(--color-muted);font-size:15px}.hero .desc{margin-top:16px;max-width:36em;color:var(--color-text);font-size:17px;line-height:1.7}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.hero-visual,.hero-fallback,.thumb-fallback,.cover-fallback{overflow:hidden;border-radius:20px;min-height:320px;background:#e2e8f0}.hero-visual img,.case-card .thumb img,.cover img{width:100%;height:100%;object-fit:cover}.hero-visual img{min-height:360px;max-height:420px}.hero-fallback,.thumb-fallback,.cover-fallback{display:flex;align-items:center;justify-content:center;color:#fff;font-size:48px;font-weight:700;background:linear-gradient(135deg,#2563eb,#7c3aed)}.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}.about-copy{margin-top:16px;color:var(--color-muted)}.info-card{background:#fff;border:1px solid var(--color-line);border-radius:var(--radius);padding:24px}.info-card h3{margin-bottom:12px;font-size:18px}.info-card dl{margin:0}.info-card div{display:grid;grid-template-columns:96px 1fr;gap:12px;padding:12px 0;border-bottom:1px solid var(--color-line)}.info-card div:last-child{border-bottom:0}.info-card dt{color:var(--color-muted);font-size:14px}.info-card dd{margin:0}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px}.product-grid.is-single{grid-template-columns:minmax(280px,560px);justify-content:center}.product-card,.case-card,.contact-row{background:#fff;border:1px solid var(--color-line);border-radius:var(--radius);transition:transform .3s ease,box-shadow .3s ease}.product-card{padding:0 0 20px;overflow:hidden}.product-cover{height:148px;background:#1d4ed8}.product-cover svg{width:100%;height:100%;display:block}.product-body{padding:16px 20px 4px}.product-card:hover,.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.product-brand{color:var(--color-primary);font-size:13px;font-weight:600}.product-card h3,.case-card h3{margin:8px 0 12px;font-size:20px}.tags{display:flex;flex-wrap:wrap;gap:8px}.tags span,.tag{display:inline-flex;padding:4px 10px;border-radius:999px;background:var(--color-primary-soft);color:var(--color-primary-dark);font-size:12px}.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px}.case-card .thumb,.case-card .thumb-fallback{height:220px;border-radius:12px 12px 0 0}.case-card .body{padding:20px 22px 22px}.case-card p{color:var(--color-muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.more{display:inline-block;margin-top:12px;color:var(--color-primary);font-weight:600}.contact-list{display:grid;gap:12px;margin-top:28px}.contact-row{display:flex;gap:14px;align-items:flex-start;padding:16px 18px}.contact-row .icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:10px;background:var(--color-primary-soft);color:var(--color-primary);flex-shrink:0}.contact-row small{color:var(--color-muted);font-size:13px}.footer{padding:36px 0 48px;border-top:1px solid var(--color-line);color:var(--color-muted);font-size:14px}.footer-inner{display:grid;gap:8px}.footer .links{display:flex;flex-wrap:wrap;gap:16px}.detail{padding:104px 0 80px}.crumb{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;color:var(--color-muted);font-size:14px}.panel{background:#fff;border:1px solid var(--color-line);border-radius:var(--radius);padding:28px}.panel h2{margin:10px 0 18px;font-size:32px}.cover,.cover-fallback{width:100%;max-height:460px;min-height:240px}.cover img{max-height:460px;object-fit:cover;border-radius:var(--radius)}.intro{margin-top:20px;color:var(--color-muted)}.faq{margin-top:56px}.faq.home-faq{margin-top:0}.faq-related{margin-top:-8px;padding-bottom:18px;font-size:14px}.faq-related a{color:var(--color-primary);font-weight:600}.faq-related a:hover{text-decoration:underline}.pill{display:inline-flex;padding:4px 10px;border-radius:999px;background:var(--color-primary);color:#fff;font-size:12px}.faq-title{margin-top:10px;font-size:32px;font-weight:700}.faq .sub{margin-top:8px;color:var(--color-muted)}.tabs{display:flex;gap:10px;overflow-x:auto;margin:28px 0 16px;padding-bottom:4px}.tabs button{flex:0 0 auto;border:1px solid var(--color-primary);background:#fff;color:var(--color-primary);border-radius:999px;padding:8px 14px;min-height:40px;font-weight:600;cursor:pointer;white-space:nowrap}.tabs button.active{background:var(--color-primary);color:#fff}.faq-list{background:#fff;border:1px solid var(--color-line);border-radius:var(--radius);padding:0 20px}.faq-item+.faq-item{border-top:1px solid var(--color-line)}.faq-item.is-hidden{display:none}.q{width:100%;display:flex;justify-content:space-between;gap:16px;padding:18px 0;border:0;background:transparent;text-align:left;font-size:16px;font-weight:500;color:#334155;cursor:pointer}.q i{font-style:normal;color:var(--color-muted);transition:transform .3s ease}.q i.open{transform:rotate(45deg)}.a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}.a.open{grid-template-rows:1fr}.a>div{overflow:hidden}.a p{padding:0 0 12px;color:var(--color-muted)}.a p:last-of-type{padding-bottom:18px}.pits-title{margin-top:10px;font-size:32px;font-weight:700;line-height:1.35;max-width:22em}.pits-kicker,.pits-lead,.pits-close{margin-top:24px;padding:22px 24px;border-radius:var(--radius)}.pits-kicker{border-left:4px solid var(--color-primary);background:var(--color-primary-soft)}.pits-lead,.pits-close{background:#fff;border:1px solid var(--color-line)}.pits-kicker h3,.pits-lead h3,.pits-close h3,.pit-block h4{margin-bottom:12px;font-size:18px}.pits-kicker ol,.pits-lead ol,.pits-close ol,.pit-block ol{margin:0;padding-left:1.4em;color:var(--color-text);font-size:17px;line-height:1.85}.pits-kicker li+li,.pits-lead li+li,.pits-close li+li,.pit-block li+li{margin-top:8px}.pit-list{list-style:none;margin:32px 0 0;padding:0;display:grid;gap:20px}.pit-card{background:#fff;border:1px solid var(--color-line);border-radius:var(--radius);padding:8px 24px}.pit-q{width:100%;display:flex;gap:12px;align-items:flex-start;padding:16px 0;border:0;background:transparent;text-align:left;font-size:22px;font-weight:700;line-height:1.4;color:var(--color-text);cursor:pointer}.pit-num{flex:0 0 32px;height:32px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;background:var(--color-primary);color:#fff;font-size:14px}.pit-name{flex:1;min-width:0}.pit-q i{flex:0 0 auto;margin-top:2px;font-style:normal;font-weight:500;color:var(--color-muted);transition:transform .3s ease}.pit-q i.open{transform:rotate(45deg)}.pit-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}.pit-a.open{grid-template-rows:1fr}.pit-a>div{overflow:hidden}.pit-a.open>div{padding-bottom:16px}.pit-block{margin-top:20px}.pit-proof{margin-top:16px;padding-top:16px;border-top:1px dashed var(--color-line);color:var(--color-text);font-size:16px;line-height:1.8}.pits-cases{margin-top:40px}.pits-cases h3{font-size:24px}.pits-cases-note{margin-top:8px;color:var(--color-muted);font-size:14px}.pits-case-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px;margin-top:20px}.pits-case{display:block;padding:20px;border:1px solid var(--color-line);border-radius:var(--radius);background:#fff}.pits-case:hover{box-shadow:var(--shadow);transform:translateY(-2px);transition:.3s ease}.pits-case strong{display:block;margin:8px 0;font-size:16px}.pits-case p{color:var(--color-muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}@media (max-width: 1023px){.pit-card dl,.pits-case-grid{grid-template-columns:1fr}}.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}.reveal-in{opacity:1;transform:none}.empty{color:var(--color-muted)}@media (max-width: 1023px){.hero-grid,.about-grid,.product-grid,.case-grid{grid-template-columns:1fr 1fr}.hero-grid,.about-grid,.case-grid{grid-template-columns:1fr}}@media (max-width: 767px){.section{padding:48px 0}.hero{padding:112px 0 48px}.hero h1,.section-title,.panel h2,.faq-title,.pits-title{font-size:28px}.burger{display:inline-flex}.menu{display:none;position:absolute;left:0;right:0;top:72px;flex-direction:column;align-items:stretch;gap:0;background:#ffffffe6;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding:8px 20px 16px;border-bottom:1px solid rgba(226,232,240,.7)}.menu.show{display:flex}.menu a,.menu .btn{margin:8px 0}.product-grid{grid-template-columns:1fr}.info-card div{grid-template-columns:1fr;gap:4px}.q{font-size:15px}}