:root{
  --primary:#8E9AAF;
  --primary-deep:#6B7488;
  --primary-soft:#EEF1F5;
  --primary-border:#D6DAE4;
  --ink:#1A1A2E;
  --navy:#16213E;
  --accent:#E94560;
  --accent-deep:#D03A54;
  --bg:#F0F0F0;
  --text:#454C5F;
  --muted:#83899B;
  --ok:#2E8B7B;
  --ok-soft:#E3F1EE;
  --line:rgba(26,26,46,.09);
  --shadow:0 1px 2px rgba(26,26,46,.05),0 14px 34px -20px rgba(26,26,46,.22);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Space Grotesk','Noto Sans SC','PingFang TC','Hiragino Sans GB','Microsoft JhengHei',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
svg{display:block;stroke:currentColor;fill:none;stroke-width:1.8}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
.container{max-width:1180px;margin:0 auto;padding:0 22px}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* top bar */
.topbar{background:var(--accent);color:#fff;text-align:center;font-size:12.5px;padding:7px 14px;font-weight:500;letter-spacing:.01em}
.topbar .dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#fff;margin-right:8px;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:var(--navy);border-bottom:1px solid rgba(255,255,255,.07)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}
.brand{display:flex;align-items:center;gap:12px;color:#fff}
.brand .mark{width:40px;height:40px;border-radius:11px;background:#fff;display:grid;place-items:center;color:var(--ink);flex-shrink:0;overflow:hidden}.brand .mark img{width:100%;height:100%;object-fit:contain;padding:4px}
.brand b{font-size:19px;font-weight:700;letter-spacing:.01em;color:#fff;line-height:1.1}
.brand b i{font-style:normal;color:var(--primary)}
.brand small{display:block;font-size:9.5px;letter-spacing:.24em;text-transform:uppercase;color:#8D96AB;font-weight:600;margin-top:2px}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{color:#C3CADA;font-size:14px;font-weight:500;padding:9px 13px;border-radius:9px;transition:.18s}
.nav-links a:hover{color:#fff;background:rgba(142,154,175,.14)}
.nav-links a.active{color:var(--primary);background:rgba(142,154,175,.16)}
.lang-switch{display:flex;align-items:center;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:3px;gap:2px;flex-shrink:0}
.lang-btn{appearance:none;border:0;background:transparent;color:#A7B0C4;font-size:12px;font-weight:600;padding:5px 8px;border-radius:999px;cursor:pointer;font-family:inherit;transition:.18s;line-height:1.4}
.lang-btn.active{background:var(--primary);color:var(--ink)}
.lang-select{display:none;appearance:none;border:0;background:transparent;color:#fff;font-size:12px;font-weight:700;padding:6px 26px 6px 10px;border-radius:999px;font-family:inherit;cursor:pointer;background-image:linear-gradient(45deg,transparent 50%,#A7B0C4 50%),linear-gradient(135deg,#A7B0C4 50%,transparent 50%);background-position:calc(100% - 13px) 50%,calc(100% - 9px) 50%;background-size:4px 4px,4px 4px;background-repeat:no-repeat}.lang-select option{color:#1b1a31;background:#fff}
.menu-btn{display:none;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:10px;width:42px;height:42px;color:#fff;cursor:pointer;align-items:center;justify-content:center;flex-shrink:0}
.mobile-menu{display:none;background:var(--navy);border-top:1px solid rgba(255,255,255,.07);padding:10px 18px 18px}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;color:#C3CADA;padding:11px 12px;border-radius:9px;font-size:15px;font-weight:500}
.mobile-menu a.active{color:var(--primary);background:rgba(142,154,175,.14)}
.mobile-menu .lang-switch{display:inline-flex;margin:12px 6px 4px}
@media(max-width:1023px){.nav-links{display:none}.menu-btn{display:flex}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:0;cursor:pointer;font-family:inherit;font-weight:600;border-radius:999px;padding:13px 26px;font-size:15px;transition:.2s;line-height:1.2;text-align:center}
.btn-primary{background:var(--primary);color:var(--ink)}
.btn-primary:hover{background:var(--primary-deep);color:#fff}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-deep)}
.btn-ghost{background:#fff;color:var(--ink);border:1.5px solid var(--primary-border)}
.btn-ghost:hover{border-color:var(--primary)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#2A2A46}
.btn-lg{padding:15px 30px;font-size:16px}
.btn .arr{transition:transform .2s;display:inline-flex}
.btn:hover .arr{transform:translateX(3px)}

/* sections */
.section{padding:88px 0}
.section.white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.kicker{display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--primary-deep)}
.kicker::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.sec-head{max-width:780px;margin-bottom:52px}
.sec-head.center{text-align:center;margin-left:auto;margin-right:auto}
h1,h2,h3,h4{color:var(--ink);line-height:1.18;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(34px,5vw,52px)}
h2{font-size:clamp(26px,3.4vw,34px)}
h3{font-size:20px}
.sec-head p{color:var(--muted);margin-top:14px;font-size:16.5px}
.dark h1,.dark h2,.dark h3{color:#fff}
.dark .kicker{color:var(--primary)}

/* hero */
.hero{position:relative;overflow:hidden;padding:76px 0 66px}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(900px 520px at 88% -12%,rgba(142,154,175,.3),transparent 62%),radial-gradient(760px 460px at -8% 108%,rgba(233,69,96,.09),transparent 58%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--primary-border);color:var(--ink);font-size:12.5px;font-weight:600;padding:7px 15px;border-radius:999px;box-shadow:var(--shadow)}
.hero-badge .live{width:7px;height:7px;border-radius:50%;background:var(--accent);animation:pulse 1.8s infinite;flex-shrink:0}
.hero h1{margin:22px 0 18px;font-size:clamp(36px,4.6vw,54px)}
.hero-sub{font-size:17px;color:var(--text);max-width:560px}
.hero-cta{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-media{position:relative}
.hero-media .frame{position:relative;aspect-ratio:16/10;overflow:hidden;border-radius:22px;border:1px solid rgba(255,255,255,.65);box-shadow:0 26px 60px -26px rgba(22,33,62,.5)}
.hero-media .frame img{width:100%;height:100%;object-fit:cover}
.chip{position:absolute;display:flex;align-items:center;gap:10px;background:rgba(255,255,255,.95);backdrop-filter:blur(6px);border:1px solid var(--primary-border);border-radius:14px;padding:10px 15px;box-shadow:0 12px 30px -12px rgba(26,26,46,.4);font-size:12px;font-weight:600;color:var(--ink)}
.chip small{display:block;font-size:10px;color:var(--muted);font-weight:600;letter-spacing:.08em;text-transform:uppercase}
.chip .val{font-size:14.5px;font-weight:700;letter-spacing:.01em}
.chip-top{top:16px;left:16px}
.chip-bottom{bottom:16px;right:16px}
.dot-ok{width:9px;height:9px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(46,139,123,.18);flex-shrink:0}
@media(max-width:1023px){.hero-grid{grid-template-columns:1fr;gap:40px}.hero{padding:56px 0 48px}}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:64px}
.stat{background:#fff;border:1px solid var(--primary-border);border-radius:16px;padding:20px 22px;display:flex;gap:14px;align-items:flex-start;box-shadow:var(--shadow)}
.stat .ico{width:40px;height:40px;border-radius:11px;background:var(--primary-soft);color:var(--primary-deep);display:grid;place-items:center;flex-shrink:0}
.stat b{display:block;color:var(--ink);font-size:16.5px;letter-spacing:.01em;line-height:1.3}
.stat span{font-size:12px;color:var(--muted);font-weight:500}
@media(max-width:900px){.stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.stats{grid-template-columns:1fr 1fr;gap:12px}}

/* Hero feature highlights */
.stat-highlight{position:relative;overflow:hidden;min-height:94px;padding:19px 20px;border-color:rgba(142,154,175,.55);box-shadow:0 12px 28px -18px rgba(22,33,62,.42);transition:transform .2s,box-shadow .2s,border-color .2s}.stat-highlight::before{content:"";position:absolute;inset:0 0 auto;height:4px;background:var(--primary);opacity:.9}.stat-highlight:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:0 20px 34px -20px rgba(22,33,62,.5)}.stat-highlight .ico{width:42px;height:42px;border-radius:13px;background:var(--primary-soft);color:var(--primary-deep)}.stat-highlight b{font-size:17px}.stat-highlight>span:last-child>span{display:block;margin-top:2px;color:var(--text);font-size:12px}.stat-battery::before{background:#7b8da8}.stat-connectivity::before{background:#3f8f83}.stat-connectivity .ico{background:#e3f1ee;color:#28786d}.stat-setup::before{background:#d99b38}.stat-setup .ico{background:#fff4df;color:#a66a13}.stat-alerts::before{background:var(--accent)}.stat-alerts .ico{background:#fde8ec;color:var(--accent-deep)}
@media(max-width:520px){.stat-highlight{min-height:102px;padding:16px 14px;gap:10px}.stat-highlight .ico{width:36px;height:36px}.stat-highlight b{font-size:14px}.stat-highlight>span:last-child>span{font-size:11px}}

/* features (why) */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{background:#fff;border:1px solid var(--primary-border);border-radius:18px;padding:30px 28px;box-shadow:var(--shadow);transition:transform .22s,box-shadow .22s}
.feature:hover{transform:translateY(-4px);box-shadow:0 22px 46px -22px rgba(26,26,46,.28)}
.feature .ico{width:48px;height:48px;border-radius:13px;display:grid;place-items:center;margin-bottom:18px;background:var(--primary-soft);color:var(--primary-deep)}
.feature:nth-child(2) .ico{background:rgba(233,69,96,.1);color:var(--accent)}
.feature:nth-child(3) .ico{background:var(--ok-soft);color:var(--ok)}
.feature h3{font-size:18.5px;margin-bottom:10px}
.feature p{font-size:14.5px;color:var(--text)}
@media(max-width:900px){.features{grid-template-columns:1fr}}

/* sensor cards */
.sensor-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.sensor-card{background:#fff;border:1px solid var(--primary-border);border-radius:20px;overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .22s,box-shadow .22s}
.sensor-card:hover{transform:translateY(-4px);box-shadow:0 24px 48px -24px rgba(26,26,46,.3)}
.sensor-card .media{position:relative;aspect-ratio:4/3;overflow:hidden}
.sensor-card .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.sensor-card:hover .media img{transform:scale(1.04)}.sensor-card .media img.lifestyle-shot,.sensor-row .media img.lifestyle-shot,.detail-media img.lifestyle-shot{object-fit:cover;background:#fff;padding:0;object-position:center}
.sensor-card .tag{position:absolute;top:14px;left:14px;background:rgba(255,255,255,.93);backdrop-filter:blur(4px);color:var(--ink);font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:6px 12px;border-radius:999px;border:1px solid var(--primary-border)}
.sensor-card .body{padding:26px 26px 28px;display:flex;flex-direction:column;flex:1}
.sensor-card h3{font-size:21px;margin-bottom:10px}
.sensor-card p{font-size:14.5px;color:var(--text);flex:1}
.sensor-card .more{display:inline-flex;align-items:center;gap:7px;margin-top:18px;color:var(--primary-deep);font-weight:600;font-size:14.5px}
.sensor-card .more:hover{color:var(--ink)}
@media(max-width:900px){.sensor-grid{grid-template-columns:1fr}}

/* places */
.places{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.place{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--primary-border);box-shadow:var(--shadow);aspect-ratio:4/3.2}
.place img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.place:hover img{transform:scale(1.05)}
.place .cap{position:absolute;inset:auto 0 0 0;padding:44px 20px 18px;background:linear-gradient(180deg,transparent,rgba(22,33,62,.9));color:#fff}
.place .cap h3{color:#fff;font-size:17px;margin-bottom:5px}
.place .cap p{font-size:12.5px;color:#D4D9E6;line-height:1.55}
.place .cap{min-height:118px}
@media(max-width:1100px){.places{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.places{grid-template-columns:1fr}}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{background:#fff;border:1px solid var(--primary-border);border-radius:18px;padding:26px 24px;box-shadow:var(--shadow)}
.step .num{width:38px;height:38px;border-radius:50%;background:var(--ink);color:#fff;font-weight:700;display:grid;place-items:center;font-size:15px;margin-bottom:16px}
.step .ico{width:44px;height:44px;border-radius:12px;background:var(--primary-soft);color:var(--primary-deep);display:grid;place-items:center;margin-bottom:16px}
.step h3{font-size:16.5px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--text)}
@media(max-width:1000px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}

/* cta band */
.cta-band{background:var(--ink);border-radius:26px;padding:66px 40px;text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(620px 320px at 50% -20%,rgba(142,154,175,.35),transparent 60%),radial-gradient(420px 280px at 96% 120%,rgba(233,69,96,.24),transparent 55%);pointer-events:none}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);max-width:660px;margin:0 auto 12px}
.cta-band p{color:#AAB2C5;margin-bottom:30px;font-size:16px}
.cta-band .btn{position:relative}

/* page head (inner pages) */
.page-head{padding:62px 0 10px}
.page-head .eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--primary-deep)}
.page-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.page-head h1{margin:16px 0 16px}
.page-head .lead{font-size:17px;color:var(--text);max-width:840px}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--primary-deep);font-weight:600;font-size:14px;margin-bottom:24px;transition:.18s}
.back-link:hover{color:var(--ink)}
.back-link svg{transition:transform .18s}
.back-link:hover svg{transform:translateX(-3px)}

/* detail layout */
.detail-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:26px;margin:46px 0 72px;align-items:stretch}
.detail-media{background:#fff;border:1px solid var(--primary-border);border-radius:22px;overflow:hidden;box-shadow:var(--shadow)}
.detail-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:1/1}
.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.feat{background:#fff;border:1px solid var(--primary-border);border-radius:16px;padding:22px;box-shadow:var(--shadow)}
.feat .ico{width:40px;height:40px;border-radius:11px;background:var(--primary-soft);color:var(--primary-deep);display:grid;place-items:center;margin-bottom:12px}
.feat h3{font-size:15.5px;margin-bottom:7px}
.feat p{font-size:13.5px;color:var(--text)}
.feat.wide{grid-column:1/-1}
@media(max-width:1023px){.detail-grid{grid-template-columns:1fr}.feat-grid{grid-template-columns:1fr}}

/* tables */
.table-wrap{background:#fff;border:1px solid var(--primary-border);border-radius:18px;overflow:hidden;box-shadow:var(--shadow);overflow-x:auto;margin:26px 0 54px}
table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:520px}
th{background:var(--navy);color:#fff;text-align:left;padding:14px 20px;font-size:12px;letter-spacing:.12em;text-transform:uppercase;font-weight:600}
td{padding:14px 20px;border-top:1px solid var(--line);color:var(--text);vertical-align:top}
td:first-child{font-weight:600;color:var(--ink);width:34%}
tbody tr:nth-child(even) td{background:#FAFBFD}

/* uses callout */
.uses{background:var(--primary-soft);border:1px solid var(--primary-border);border-radius:18px;padding:24px 26px;margin-bottom:46px}
.uses h3{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--primary-deep);margin-bottom:10px}
.uses p{font-size:15px;color:var(--ink);font-weight:500;line-height:1.8}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:20px}

/* sensors overview rows */
.sensor-row{background:#fff;border:1px solid var(--primary-border);border-radius:22px;overflow:hidden;box-shadow:var(--shadow);display:grid;grid-template-columns:.85fr 1.15fr;margin-bottom:34px}
.sensor-row .media{min-height:280px;overflow:hidden}
.sensor-row .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.sensor-row:hover .media img{transform:scale(1.03)}
.sensor-row .body{padding:36px 38px}
.sensor-row h2{font-size:26px;margin-bottom:12px}
.sensor-row .desc{color:var(--text);font-size:15px;margin-bottom:24px}
.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:11px 18px;margin-bottom:28px;list-style:none}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text)}
.ck{flex-shrink:0;width:19px;height:19px;border-radius:6px;background:var(--ok-soft);color:var(--ok);display:grid;place-items:center;margin-top:2px}
@media(max-width:1023px){.sensor-row{grid-template-columns:1fr}.check-list{grid-template-columns:1fr}.sensor-row .body{padding:28px 24px}}

/* shared chips */
.chips{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.chip-item{display:flex;gap:11px;align-items:center;background:#fff;border:1px solid var(--primary-border);border-radius:14px;padding:15px 17px;font-size:14px;color:var(--ink);font-weight:500;box-shadow:var(--shadow)}
@media(max-width:900px){.chips{grid-template-columns:1fr}}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;max-width:980px;margin:0 auto 70px}
.plan{background:#fff;border:1px solid var(--primary-border);border-radius:22px;padding:36px;box-shadow:var(--shadow);display:flex;flex-direction:column;position:relative}
.plan.hot{border:2px solid var(--primary)}
.plan .badge{position:absolute;top:-13px;right:26px;background:var(--accent);color:#fff;font-size:10.5px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;padding:6px 14px;border-radius:999px}
.plan h2{font-size:22px;margin-bottom:6px}
.plan .sub{font-size:12.5px;color:var(--muted);margin-bottom:22px}
.price{font-size:44px;font-weight:700;color:var(--ink);letter-spacing:-.02em;line-height:1.1}
.price small{font-size:14px;color:var(--muted);font-weight:500}
.price .note{display:block;font-size:12.5px;color:var(--muted);margin-top:8px;font-weight:500;letter-spacing:0}
.plan ul{list-style:none;margin:22px 0 26px;border-top:1px solid var(--line);padding-top:22px;display:grid;gap:11px}
.plan li{display:flex;gap:10px;font-size:14px;color:var(--text);align-items:flex-start}
.plan .btn{margin-top:auto}
.plan .plus{font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin:8px 0 10px}
@media(max-width:820px){.plans{grid-template-columns:1fr}}
.notes{background:#fff;border:1px solid var(--primary-border);border-radius:18px;padding:24px 28px;font-size:13px;color:var(--muted);display:grid;gap:8px;max-width:980px;margin:0 auto 70px}
.notes p{display:flex;gap:9px}
.notes .dot{width:5px;height:5px;border-radius:50%;background:var(--primary);margin-top:8px;flex-shrink:0}
.center-cta{background:#fff;border:1px solid var(--primary-border);border-radius:22px;padding:52px 40px;max-width:900px;margin:0 auto;text-align:center;box-shadow:var(--shadow)}

/* faq */
.faq{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--primary-border);border-radius:16px;box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 24px;background:none;border:0;cursor:pointer;font-size:16px;font-weight:600;color:var(--ink);text-align:left;transition:.18s}
.faq-q:hover{background:#FAFBFD}
.faq-q .icon{width:26px;height:26px;border-radius:50%;background:var(--primary-soft);color:var(--primary-deep);display:grid;place-items:center;font-size:17px;font-weight:600;flex-shrink:0;transition:transform .2s}
.faq-a{display:none;padding:0 24px 22px;border-top:1px solid var(--line);margin-top:0}
.faq-a p{padding-top:15px;font-size:14.5px;color:var(--text)}
.faq-item.open .faq-a{display:block}
.faq-item.open .faq-q .icon{transform:rotate(45deg)}

/* contact */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:34px;margin:46px 0 30px}
.info-card{background:#fff;border:1px solid var(--primary-border);border-radius:20px;padding:30px;box-shadow:var(--shadow)}
.info-card h3{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.info-row{display:flex;gap:14px;align-items:center;padding:15px 0;border-bottom:1px solid var(--line)}
.info-row:last-child{border-bottom:0}
.info-row .ico{width:40px;height:40px;border-radius:11px;background:var(--primary-soft);color:var(--primary-deep);display:grid;place-items:center;flex-shrink:0}
.info-row span{display:block;font-size:11px;color:var(--muted);letter-spacing:.1em;text-transform:uppercase;font-weight:600}
.info-row b{font-size:15px;color:var(--ink);font-weight:600;word-break:break-all}
.resp{font-size:12.5px;color:var(--muted);font-style:italic;margin-top:16px}
.form-card{background:#fff;border:1px solid var(--primary-border);border-radius:20px;padding:32px;box-shadow:var(--shadow)}
.form-card label{display:block;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:7px}
.field{margin-bottom:18px}
input,select,textarea{width:100%;background:#F7F8FA;border:1px solid var(--primary-border);border-radius:12px;padding:12px 15px;font-size:14.5px;color:var(--ink);font-family:inherit;outline:none;transition:.18s}
input:focus,select:focus,textarea:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 4px rgba(142,154,175,.16)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}
.form-msg{display:none;margin-top:16px;padding:13px 16px;border-radius:12px;background:var(--ok-soft);color:var(--ok);font-size:14px;font-weight:500}
.form-msg.show{display:block}
@media(max-width:1023px){.contact-grid{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}}

/* flow (how it works) */
.flow{display:flex;align-items:stretch;justify-content:center;flex-wrap:wrap;gap:10px}
.flow-node{background:#fff;border:1px solid var(--primary-border);border-radius:14px;padding:14px 20px;display:flex;align-items:center;gap:10px;font-weight:600;font-size:14px;color:var(--ink);box-shadow:var(--shadow)}
.flow-node .ico{width:30px;height:30px;border-radius:9px;background:var(--primary-soft);color:var(--primary-deep);display:grid;place-items:center}
.flow-node.alert{background:var(--accent);border-color:var(--accent);color:#fff}
.flow-node.alert .ico{background:rgba(255,255,255,.22);color:#fff}
.flow-arrow{display:flex;align-items:center;color:var(--primary);font-size:19px}
@media(max-width:760px){.flow-arrow{transform:rotate(90deg)}}

/* footer */
.footer{background:var(--navy);color:#AAB2C5;padding:52px 0 38px;font-size:13.5px}
.footer-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,360px);gap:44px;align-items:start}.footer-menu{min-width:0}.footer-grid{display:block}.footer-grid>.brand{display:inline-flex;margin-bottom:16px}.footer-grid>span{display:block;max-width:420px}.footer-links{display:flex;gap:24px;flex-wrap:wrap;margin-top:24px}
.footer-links a{color:#AAB2C5;transition:.18s;font-size:13.5px}
.footer-links a:hover{color:var(--primary)}
.footer-copy{margin-top:30px;padding-top:22px;border-top:1px solid rgba(255,255,255,.09);font-size:12px;color:#79829A;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}


/* use cases */
.use-case-head{padding-bottom:34px}
.uc-jump{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.uc-jump a{background:#fff;border:1px solid var(--primary-border);border-radius:999px;padding:9px 16px;color:var(--ink);font-size:13px;font-weight:600;box-shadow:var(--shadow);transition:transform .18s,border-color .18s}
.uc-jump a:hover{transform:translateY(-2px);border-color:var(--primary)}
.uc-option-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
.uc-option-card{background:#fff;border:1px solid var(--primary-border);border-radius:22px;overflow:hidden;box-shadow:var(--shadow)}
.uc-photo{aspect-ratio:4/3;overflow:hidden;background:var(--primary-soft)}
.uc-photo img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.uc-option-card:hover .uc-photo img{transform:scale(1.025)}
.uc-option-body{padding:28px 30px 30px}
.uc-label{display:inline-flex;background:var(--primary-soft);color:var(--primary-deep);border:1px solid var(--primary-border);border-radius:999px;padding:5px 11px;font-size:10.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;margin-bottom:13px}
.uc-option-body h3{font-size:23px;margin-bottom:11px}
.uc-option-body>p{font-size:14.5px;color:var(--text);margin-bottom:19px}
.uc-list{list-style:none;display:grid;gap:13px}
.uc-list li{position:relative;padding-left:20px;font-size:13.5px;color:var(--text);line-height:1.6}
.uc-list li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:3px;background:var(--ok)}
.uc-list b{color:var(--ink)}
.uc-business-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.uc-business-card{grid-column:span 2;background:#fff;border:1px solid var(--primary-border);border-radius:18px;padding:26px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.uc-business-card:nth-child(4){grid-column:2/span 2}.uc-business-card:nth-child(5){grid-column:4/span 2}
.uc-number{display:block;color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.14em;margin-bottom:18px}
.uc-business-card h3{font-size:19px;margin-bottom:10px}
.uc-business-card p{font-size:13.5px;color:var(--text)}
.uc-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:20px}
.uc-tags span{font-size:10.5px;font-weight:700;color:var(--primary-deep);background:var(--primary-soft);border-radius:999px;padding:5px 9px}
.uc-recommend{margin-top:54px;background:var(--navy);border-radius:24px;padding:38px 42px;display:flex;align-items:center;justify-content:space-between;gap:28px;box-shadow:var(--shadow)}
.uc-recommend h2{color:#fff;margin:10px 0 8px}.uc-recommend p{color:#AAB2C5}.uc-recommend .kicker{color:var(--primary)}
.section-link{text-align:center;margin-top:28px}
@media(max-width:900px){.uc-option-grid{grid-template-columns:1fr}.uc-business-grid{grid-template-columns:1fr}.uc-business-card,.uc-business-card:nth-child(4),.uc-business-card:nth-child(5){grid-column:auto}.uc-recommend{align-items:flex-start;flex-direction:column}}
@media(max-width:560px){.uc-option-body{padding:23px 21px 25px}.uc-recommend{padding:30px 24px}.uc-photo{aspect-ratio:4/3}}

/* Practical package card photography */
.uc-business-card{background-image:linear-gradient(rgba(255,255,255,.84),rgba(255,255,255,.9)),var(--uc-card-image);background-size:cover;background-position:center;transition:transform .22s,box-shadow .22s,background-position .22s}
.uc-business-card:hover{transform:translateY(-4px);box-shadow:0 24px 48px -24px rgba(26,26,46,.3);background-image:linear-gradient(rgba(255,255,255,.76),rgba(255,255,255,.86)),var(--uc-card-image)}
.uc-business-card>*{position:relative;z-index:1}
.uc-business-card .uc-tags span{background:rgba(238,241,245,.9);backdrop-filter:blur(4px)}

/* Sensor registration CTA */
.nav-register{background:var(--accent)!important;color:#fff!important;padding:8px 15px!important;font-weight:700!important;margin-left:5px}
.nav-register:hover{background:var(--accent-deep)!important;color:#fff!important}
.register-cta-section{padding-top:0}
.register-cta{display:flex;align-items:center;justify-content:space-between;gap:30px;background:var(--primary-soft);border:1px solid var(--primary-border);border-radius:24px;padding:34px 40px;box-shadow:var(--shadow)}
.register-cta h2{margin:10px 0 8px;font-size:clamp(24px,3vw,32px)}
.register-cta p{color:var(--text);max-width:690px;font-size:15.5px}
.register-cta .btn{flex-shrink:0}
@media(max-width:700px){.register-cta{align-items:flex-start;flex-direction:column;padding:28px 24px}.register-cta .btn{width:100%}}
/* External comprehensive IoT projects CTA */
.project-cta-section{padding-top:0}
.project-cta{display:flex;align-items:center;justify-content:space-between;gap:30px;background:var(--ink);border-radius:24px;padding:36px 40px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.project-cta::after{content:"";position:absolute;width:360px;height:240px;right:-120px;top:-120px;border-radius:50%;background:radial-gradient(circle,rgba(233,69,96,.28),transparent 68%);pointer-events:none}
.project-cta-copy{position:relative;z-index:1}.project-cta .kicker{color:var(--primary)}.project-cta h2{color:#fff;margin:10px 0 8px;font-size:clamp(24px,3vw,32px);max-width:760px}.project-cta p{color:#AAB2C5;max-width:760px;font-size:15.5px;margin:0}.project-cta-link{position:relative;z-index:1;flex-shrink:0;white-space:nowrap}
@media(max-width:700px){.project-cta{align-items:flex-start;flex-direction:column;padding:30px 24px}.project-cta-link{width:100%}}

/* NB-IoT explainer section */
.nbiot-about-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.nbiot-about-head{display:flex;align-items:flex-start;justify-content:space-between;gap:36px}.nbiot-about-head h2{margin:10px 0 12px}.nbiot-lead{max-width:720px;font-size:17px;color:var(--text);margin:0}.nbiot-logo-card{display:flex;flex-direction:column;align-items:center;gap:8px;min-width:180px;padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow);text-decoration:none;color:var(--muted);font-size:11px;font-weight:700;text-align:center}.nbiot-logo-card img{display:block;width:150px;height:58px;object-fit:contain}.nbiot-logo-card:hover{border-color:var(--primary);transform:translateY(-2px)}.nbiot-about-copy{max-width:860px;margin:26px 0 48px}.nbiot-about-copy p{font-size:16px;line-height:1.8;color:var(--text)}
.nbiot-subhead{margin:0 0 24px}.nbiot-subhead h2{margin-top:9px}.nbiot-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:60px}.nbiot-feature-card{padding:24px;background:var(--bg);border:1px solid var(--line);border-radius:18px;min-height:190px}.nbiot-feature-card h3{margin:16px 0 8px;font-size:18px}.nbiot-feature-card p,.nbiot-region-card p{font-size:14px;line-height:1.65;color:var(--text);margin:0}.nbiot-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:14px;background:var(--primary-soft);color:var(--primary-deep)}.nbiot-icon svg{width:23px;height:23px;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.nbiot-limit-card{background:#fff8f8;border-color:#f3d4d9}.nbiot-limit-card .nbiot-icon{background:#fde8ec;color:var(--accent-deep)}
.nbiot-region-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.nbiot-region-card{display:flex;gap:18px;padding:26px;border-radius:20px;background:var(--navy);color:#fff}.nbiot-region-flag{font-size:34px;line-height:1}.nbiot-region-card h3{color:#fff;margin:0 0 8px;font-size:20px}.nbiot-region-card strong{display:block;color:var(--primary);font-size:13px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px}.nbiot-region-card p{color:#c5cada}.nbiot-source{margin:22px 0 0;text-align:right;color:var(--muted);font-size:12px}.nbiot-source a{color:var(--primary-deep);font-weight:700}
@media(max-width:850px){.nbiot-about-head{flex-direction:column}.nbiot-logo-card{align-self:flex-start;flex-direction:row;min-width:0}.nbiot-logo-card img{width:135px}.nbiot-feature-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.nbiot-feature-grid,.nbiot-region-grid{grid-template-columns:1fr}.nbiot-about-section{padding-top:64px;padding-bottom:64px}.nbiot-logo-card{width:100%;justify-content:flex-start}.nbiot-source{text-align:left}}
/* Compact Custom IoT Projects footer panel */
.footer-project-cta{display:flex;flex-direction:column;align-items:stretch;justify-content:center;gap:18px;margin:0;padding:24px;border:1px solid rgba(255,255,255,.14);border-radius:16px;background:rgba(255,255,255,.055);box-shadow:none;position:relative;overflow:hidden}.footer-project-cta::after{content:"";position:absolute;width:220px;height:150px;right:-85px;top:-100px;border-radius:50%;background:radial-gradient(circle,rgba(233,69,96,.3),transparent 70%);pointer-events:none}.footer-project-copy{display:flex;flex-direction:column;gap:6px;position:relative;z-index:1}.footer-project-kicker{color:var(--primary);font-size:10px;font-weight:700;letter-spacing:.16em;text-transform:uppercase}.footer-project-copy strong{color:#fff;font-size:18px;line-height:1.25}.footer-project-cta>a{position:relative;z-index:1;flex-shrink:0;color:#1a1a2e;background:#aebbd2;border-radius:999px;padding:10px 18px;font-weight:700;font-size:13px;text-decoration:none;white-space:nowrap;transition:.18s}.footer-project-cta>a:hover{background:#fff;transform:translateY(-1px)}
@media(max-width:800px){.footer-layout{grid-template-columns:1fr;gap:28px}.footer-project-cta{max-width:520px}}
@media(max-width:1023px){.site-header .lang-switch .lang-btn{display:none}.site-header .lang-switch .lang-select{display:block}.mobile-menu .lang-switch .lang-btn{display:none}.mobile-menu .lang-switch .lang-select{display:block}}
/* Use the language dropdown consistently on desktop and mobile. */
.lang-switch .lang-btn{display:none!important}.lang-switch .lang-select{display:block!important;min-width:82px}
@media(max-width:620px){.footer-project-cta{padding:20px}.footer-project-cta>a{width:100%;text-align:center}}

/* Language dropdown: keep the selected value readable in every browser and language. */
.lang-switch .lang-select{
  color:#fff!important;
  background-color:rgba(255,255,255,.08)!important;
  border:1px solid rgba(255,255,255,.22)!important;
  color-scheme:dark;
  outline:none;
}
.lang-switch .lang-select:hover,
.lang-switch .lang-select:focus{
  background-color:rgba(255,255,255,.14)!important;
  border-color:rgba(255,255,255,.42)!important;
  color:#fff!important;
}
.lang-switch .lang-select option{
  color:#fff!important;
  background-color:#172342!important;
}