:root{--spai-blue:#0b4ea2;--spai-blue-2:#0877c9;--spai-cyan:#12a8c7;--spai-green:#27ae60;--spai-orange:#f29b27;--spai-purple:#7455c6;--spai-ink:#12263a;--spai-muted:#5f7082;--spai-bg:#f4f8fc;--spai-line:#dce8f2;--spai-white:#fff}
html{scroll-behavior:smooth}
.spai-iot-page,.spai-iot-page *{box-sizing:border-box;font-family:"Microsoft YaHei","微软雅黑","PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Source Han Sans SC",Arial,sans-serif}
.spai-iot-page{width:100%;max-width:100%;margin:0 auto;overflow:hidden;background:#fff;color:var(--spai-ink);line-height:1.72;-webkit-font-smoothing:antialiased}
.spai-iot-page,.spai-iot-page .spai-grid>*,.spai-iot-page .spai-gallery>*,.spai-iot-page .spai-split>*{min-width:0}
.spai-iot-page img{display:block;max-width:100%!important;height:auto;border:0}
.spai-iot-page a{text-decoration:none}
.spai-container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.spai-section{padding:84px 0;position:relative}
.spai-section--soft{background:var(--spai-bg)}
.spai-section--dark{background:linear-gradient(135deg,#071d3a 0%,#0a3d74 58%,#0877a7 100%);color:#fff}
.spai-eyebrow{display:inline-flex;align-items:center;gap:9px;margin-bottom:16px;color:var(--spai-blue-2);font-size:14px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.spai-eyebrow:before{content:"";width:28px;height:3px;border-radius:999px;background:linear-gradient(90deg,var(--spai-blue-2),var(--spai-green))}
.spai-heading{margin:0;color:var(--spai-ink);font-size:clamp(30px,4vw,48px);line-height:1.22;letter-spacing:-.03em}
.spai-lead{max-width:760px;margin:18px 0 0;color:var(--spai-muted);font-size:18px}
.spai-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:36px;margin-bottom:40px}
.spai-section-head .spai-lead{margin-top:12px}
.spai-hero{position:relative;min-height:700px;display:flex;align-items:center;color:#fff;background:#061b34}
.spai-hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(3,20,41,.97) 0%,rgba(4,36,72,.86) 46%,rgba(3,19,37,.24) 78%,rgba(3,19,37,.12) 100%);z-index:1}
.spai-hero:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:86px;background:#fff;clip-path:polygon(0 58%,100% 0,100% 100%,0 100%);z-index:2}
.spai-hero__bg{position:absolute;inset:0;width:100%;height:100%!important;object-fit:cover;object-position:center right;opacity:.92}
.spai-hero__inner{position:relative;z-index:3;padding:110px 0 140px}
.spai-brand{display:inline-flex;align-items:center;gap:12px;margin-bottom:34px;color:#d7eeff;font-size:14px;font-weight:700;letter-spacing:.14em}
.spai-brand__mark{display:grid;place-items:center;width:42px;height:42px;border:1px solid rgba(255,255,255,.4);border-radius:13px;background:rgba(255,255,255,.1);backdrop-filter:blur(8px);font-size:16px;letter-spacing:0}
.spai-hero h1{max-width:760px;margin:0;font-size:clamp(44px,7vw,78px);line-height:1.06;letter-spacing:-.055em;color:#fff;text-shadow:0 10px 35px rgba(0,0,0,.2)}
.spai-hero h1 span{display:block;margin-top:16px;font-size:clamp(22px,3.4vw,38px);line-height:1.25;color:#78df9c;letter-spacing:-.02em}
.spai-hero__desc{max-width:680px;margin:28px 0 0;color:#d8e7f3;font-size:19px}
.spai-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.spai-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:0 24px;border-radius:12px;font-size:15px;font-weight:800;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}
.spai-btn:hover{transform:translateY(-2px)}
.spai-btn--primary{background:linear-gradient(135deg,#1ec977,#24b45f);color:#fff;box-shadow:0 12px 28px rgba(23,188,104,.27)}
.spai-btn--ghost{border:1px solid rgba(255,255,255,.46);background:rgba(255,255,255,.08);color:#fff;backdrop-filter:blur(8px)}
.spai-hero__badges{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;max-width:900px;margin-top:48px}
.spai-hero__badge{padding:18px 18px 16px;border:1px solid rgba(255,255,255,.17);border-radius:15px;background:rgba(5,29,55,.52);backdrop-filter:blur(10px)}
.spai-hero__badge strong{display:block;color:#fff;font-size:18px}.spai-hero__badge span{display:block;margin-top:4px;color:#bcd0df;font-size:13px}
.spai-nav{position:relative;z-index:5;margin-top:-54px}
.spai-nav__inner{display:flex;gap:4px;overflow-x:auto;padding:8px;border:1px solid var(--spai-line);border-radius:16px;background:#fff;box-shadow:0 20px 55px rgba(15,60,105,.14);scrollbar-width:none}
.spai-nav__inner::-webkit-scrollbar{display:none}
.spai-nav a{flex:0 0 auto;padding:12px 17px;border-radius:10px;color:#375166;font-size:14px;font-weight:700;white-space:nowrap}
.spai-nav a:hover{background:#edf6ff;color:var(--spai-blue)}
.spai-grid{display:grid;gap:22px}
.spai-grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.spai-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.spai-card{height:100%;padding:28px;border:1px solid var(--spai-line);border-radius:20px;background:#fff;box-shadow:0 12px 35px rgba(23,69,109,.06)}
.spai-card__icon{display:grid;place-items:center;width:50px;height:50px;margin-bottom:20px;border-radius:15px;background:#eaf5ff;color:var(--spai-blue-2)}
.spai-card__icon svg{width:25px;height:25px}
.spai-card h3{margin:0;color:var(--spai-ink);font-size:20px;line-height:1.35}.spai-card p{margin:11px 0 0;color:var(--spai-muted);font-size:15px}
.spai-card--orange .spai-card__icon{background:#fff1df;color:var(--spai-orange)}.spai-card--red .spai-card__icon{background:#ffeaeb;color:#e4565f}.spai-card--purple .spai-card__icon{background:#f0edff;color:var(--spai-purple)}
.spai-media{max-width:100%;overflow:hidden;border:1px solid var(--spai-line);border-radius:22px;background:#fff;box-shadow:0 20px 55px rgba(14,65,107,.1)}
.spai-media img{width:100%;max-width:100%!important}
.spai-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.06fr);gap:48px;align-items:center}
.spai-split--reverse{grid-template-columns:minmax(0,1.06fr) minmax(0,1fr)}
.spai-copy h2{margin:0;color:var(--spai-ink);font-size:clamp(30px,4vw,46px);line-height:1.22;letter-spacing:-.035em}
.spai-copy>p{margin:18px 0 0;color:var(--spai-muted);font-size:17px}
.spai-list{display:grid;gap:13px;margin:26px 0 0;padding:0;list-style:none}
.spai-list li{position:relative;padding-left:30px;color:#344d62;font-size:15px}.spai-list li:before{content:"✓";position:absolute;left:0;top:0;display:grid;place-items:center;width:21px;height:21px;border-radius:50%;background:#e7f8ee;color:var(--spai-green);font-size:13px;font-weight:900}
.spai-flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:38px}
.spai-flow__item{position:relative;padding:23px 18px 21px;border:1px solid #cee1ef;border-radius:17px;background:#fff;text-align:center}
.spai-flow__item:not(:last-child):after{content:"→";position:absolute;right:-15px;top:50%;z-index:2;display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--spai-blue-2);color:#fff;transform:translateY(-50%);font-weight:800}
.spai-flow__num{display:grid;place-items:center;width:36px;height:36px;margin:0 auto 13px;border-radius:12px;background:#eaf5ff;color:var(--spai-blue);font-size:13px;font-weight:900}.spai-flow__item strong{display:block;font-size:17px}.spai-flow__item span{display:block;margin-top:5px;color:var(--spai-muted);font-size:13px}
.spai-feature{padding:34px;border-radius:24px;background:linear-gradient(145deg,#fff 0%,#f5faff 100%);border:1px solid var(--spai-line)}
.spai-feature h3{margin:22px 0 0;font-size:25px}.spai-feature p{margin:12px 0 0;color:var(--spai-muted)}
.spai-feature .spai-media{box-shadow:none;border-radius:16px}
.spai-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:32px}
.spai-metric{padding:27px 20px;border-radius:18px;background:#fff;border:1px solid var(--spai-line);text-align:center}.spai-metric strong{display:block;color:var(--spai-blue);font-size:34px;line-height:1.1;letter-spacing:-.04em}.spai-metric span{display:block;margin-top:9px;color:var(--spai-muted);font-size:14px}
.spai-note{margin-top:22px;padding:17px 20px;border-left:4px solid var(--spai-orange);border-radius:8px;background:#fff9ef;color:#6f5a3b;font-size:13px}
.spai-gallery{display:grid;grid-template-columns:1.5fr .8fr .6fr;gap:18px;align-items:stretch}
.spai-gallery .spai-media{height:100%}.spai-gallery img{width:100%;height:100%;object-fit:cover}.spai-gallery__tall img{object-position:center}
.spai-usecases{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;margin-top:34px}
.spai-usecase{padding:22px 12px;border-radius:17px;background:#fff;border:1px solid var(--spai-line);text-align:center}.spai-usecase svg{width:30px;height:30px;color:var(--spai-blue-2)}.spai-usecase strong{display:block;margin-top:11px;font-size:15px}.spai-usecase span{display:block;margin-top:4px;color:var(--spai-muted);font-size:12px}
.spai-why{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.spai-why__item{display:flex;gap:16px;padding:22px;border:1px solid var(--spai-line);border-radius:17px;background:#fff}.spai-why__item b{display:grid;place-items:center;flex:0 0 42px;height:42px;border-radius:13px;background:#eaf5ff;color:var(--spai-blue);font-size:18px}.spai-why__item h3{margin:0;font-size:18px}.spai-why__item p{margin:6px 0 0;color:var(--spai-muted);font-size:14px}
.spai-cta{position:relative;overflow:hidden;padding:62px;border-radius:30px;background:linear-gradient(135deg,#06376f 0%,#0b65a8 58%,#0fa28e 100%);color:#fff}.spai-cta:before{content:"";position:absolute;width:430px;height:430px;right:-120px;top:-190px;border:1px solid rgba(255,255,255,.17);border-radius:50%;box-shadow:0 0 0 70px rgba(255,255,255,.035),0 0 0 140px rgba(255,255,255,.025)}.spai-cta__inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px}.spai-cta h2{margin:0;color:#fff;font-size:clamp(30px,4vw,47px);line-height:1.2}.spai-cta p{max-width:680px;margin:14px 0 0;color:#d6edf5}.spai-cta .spai-btn--ghost{white-space:nowrap}
.spai-disclaimer{padding:27px;border:1px dashed #b9cad8;border-radius:16px;background:#f8fafc;color:#607385;font-size:13px}
.spai-footerline{padding:22px 0 30px;color:#708193;font-size:13px;text-align:center}
.spai-tag{display:inline-flex;align-items:center;gap:7px;margin-top:21px;padding:7px 11px;border-radius:999px;background:#edf7ff;color:#176aa5;font-size:12px;font-weight:700}
@media (max-width:1024px){.spai-grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}.spai-split,.spai-split--reverse{grid-template-columns:1fr;gap:30px}.spai-hero__badges{grid-template-columns:repeat(2,minmax(0,1fr));max-width:680px}.spai-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.spai-usecases{grid-template-columns:repeat(3,minmax(0,1fr))}.spai-gallery{grid-template-columns:1fr 1fr}.spai-gallery .spai-gallery__main{grid-column:1/-1}.spai-cta__inner{align-items:flex-start;flex-direction:column}}
@media (max-width:720px){.spai-container{width:min(100% - 28px,1180px)}.spai-section{padding:62px 0}.spai-hero{min-height:650px}.spai-hero:before{background:linear-gradient(90deg,rgba(3,20,41,.97),rgba(4,36,72,.78))}.spai-hero__bg{object-position:65% center;opacity:.58}.spai-hero__inner{padding:90px 0 130px}.spai-brand{margin-bottom:24px}.spai-hero__desc{font-size:17px}.spai-hero__badges{grid-template-columns:1fr 1fr;gap:9px}.spai-hero__badge{padding:14px}.spai-section-head{display:block}.spai-grid--4,.spai-grid--2{grid-template-columns:1fr}.spai-card{padding:23px}.spai-flow{grid-template-columns:1fr}.spai-flow__item:not(:last-child):after{content:"↓";right:auto;left:50%;top:auto;bottom:-21px;transform:translateX(-50%)}.spai-feature{padding:22px}.spai-metrics{grid-template-columns:1fr 1fr;gap:10px}.spai-metric{padding:22px 10px}.spai-metric strong{font-size:28px}.spai-gallery{grid-template-columns:1fr}.spai-gallery .spai-gallery__main{grid-column:auto}.spai-usecases{grid-template-columns:1fr 1fr}.spai-why{grid-template-columns:1fr}.spai-cta{padding:38px 25px;border-radius:22px}.spai-actions{align-items:stretch;flex-direction:column}.spai-btn{width:100%}.spai-nav{margin-top:-44px}.spai-nav a{padding:10px 13px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.spai-btn{transition:none}}