/* XEEIO brand guideline v1.7
   Coral #FF6E6B · Ink #1A1A1A · Deep red #BF2A16 · Sand coral #FEB2A3 · Blush #FFD3CA
   Gotham -> Montserrat · 蘭亭黑 -> Noto Sans TC (fallbacks per guideline)
   Type scale (desktop): display 124 / figures 112 / H1 80 / H2 56 / H3 26 / lead-xl 26 / lead 21 / body 17 / caption 14 / eyebrow 13 */
:root{
  --coral:#FF6E6B; --ink:#1A1A1A; --deep:#BF2A16; --sand:#FEB2A3; --blush:#FFD3CA;
  --white:#fff; --grey:#5a5a5a; --line:#e4e0de; --tint:#f7f3f2;
  --font:"Gotham","Montserrat","Noto Sans TC","FZLanTingHei","Microsoft JhengHei",Arial,sans-serif;
  --hh:72px; --maxw:1280px; --pad:clamp(20px,4vw,48px);
  --sec:clamp(72px,9vw,128px);
  --fs-display:clamp(40px,5.8vw,80px);
  --fs-h1:clamp(34px,4vw,56px);
  --fs-h2:clamp(28px,3vw,42px);
  --fs-h3:clamp(20px,1.7vw,24px);
  --fs-lead-xl:clamp(18px,1.5vw,21px);
  --fs-lead:clamp(17px,1.4vw,20px);
  --fs-fig:clamp(48px,5vw,68px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:96px}
body{margin:0;font-family:var(--font);font-weight:400;color:var(--ink);background:var(--white);line-height:1.75;font-size:17px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body[data-lang="zh"]{font-weight:300}
body[data-lang="zh"] b,body[data-lang="zh"] strong{font-weight:500}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
p{margin:0 0 1em}
h1,h2,h3{margin:0;font-weight:800;line-height:1.14;letter-spacing:-.02em}
body[data-lang="zh"] h1,body[data-lang="zh"] h2,body[data-lang="zh"] h3{font-weight:700;letter-spacing:-.005em}
h1,h2,h3{text-wrap:balance}
p,li{text-wrap:pretty}
h2{font-size:var(--fs-h2);line-height:1.12}
h3{font-size:var(--fs-h3);line-height:1.3;letter-spacing:-.01em}
.wrap{width:100%;max-width:calc(var(--maxw) + 2*var(--pad));margin:0 auto;padding:0 var(--pad)}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:50}
.skip:focus{left:8px;top:8px}
:focus-visible{outline:3px solid var(--coral);outline-offset:3px}

/* 12-column grid */
.g{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:32px;row-gap:28px}
.g>*{grid-column:1/-1}
@media (min-width:900px){
  .c4{grid-column:span 4}.c5{grid-column:span 5}.c6{grid-column:span 6}.c7{grid-column:span 7}.c8{grid-column:span 8}.c9{grid-column:span 9}.c10{grid-column:span 10}.c12{grid-column:1/-1}
  .g>.c7.phead-lead{grid-column:1/span 7}
}

/* Header */
.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.86);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid rgba(26,26,26,.08);transition:box-shadow .2s}
.site-header.scrolled{box-shadow:0 6px 24px rgba(26,26,26,.07)}
.header-in{display:flex;align-items:center;gap:28px;height:var(--hh)}
.logo-link{display:block;flex:none;line-height:0}
.logo-link img{width:132px;height:auto}
.nav{display:flex;gap:34px;margin-left:auto;font-weight:500;font-size:15px;letter-spacing:.01em}
.nav a{text-decoration:none;padding:8px 0;border-bottom:2px solid transparent;transition:border-color .15s}
.nav a:hover{border-color:var(--sand)}
.nav a[aria-current="page"]{border-color:var(--coral)}
.lang{display:flex;border:1px solid rgba(26,26,26,.28);border-radius:999px;overflow:hidden;flex:none}
.lang button{font:inherit;font-weight:600;font-size:13px;background:none;border:0;padding:5px 12px;cursor:pointer;color:var(--ink);min-width:48px;letter-spacing:.04em}
.lang button[aria-pressed="true"]{background:var(--ink);color:#fff}
.burger{display:none;width:44px;height:44px;border:0;background:none;cursor:pointer;padding:0;position:relative}
.burger span{position:absolute;left:10px;right:10px;height:2px;background:var(--ink);transition:.2s}
.burger span:nth-child(1){top:15px}.burger span:nth-child(2){top:21px}.burger span:nth-child(3){top:27px}
.menu-open .burger span:nth-child(1){top:21px;transform:rotate(45deg)}
.menu-open .burger span:nth-child(2){opacity:0}
.menu-open .burger span:nth-child(3){top:21px;transform:rotate(-45deg)}

/* Buttons — one size everywhere */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:14px;text-decoration:none;font:inherit;font-weight:700;font-size:17px;letter-spacing:.01em;line-height:1;min-height:56px;padding:0 32px;border-radius:4px;border:2px solid var(--ink);cursor:pointer;transition:background .18s,color .18s,border-color .18s,transform .18s}
.btn::after{content:"";width:20px;height:12px;flex:none;background:currentColor;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 12'%3E%3Cpath d='M0 6h17M12 1l5 5-5 5' fill='none' stroke='%23000' stroke-width='1.8'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 12'%3E%3Cpath d='M0 6h17M12 1l5 5-5 5' fill='none' stroke='%23000' stroke-width='1.8'/%3E%3C/svg%3E") center/contain no-repeat;transition:transform .18s}
.btn:hover::after{transform:translateX(5px)}
.btn-coral{background:var(--coral);border-color:var(--coral);color:var(--ink)}
.btn-coral:hover{background:#ff8582;border-color:#ff8582}
.btn-ink{background:var(--ink);border-color:var(--ink);color:#fff}
.btn-ink:hover{background:#000}
.btn-line{background:transparent;color:var(--ink)}
.btn-line:hover{background:var(--ink);color:#fff}
.dark .btn-line{color:#fff;border-color:rgba(255,255,255,.7)}
.dark .btn-line:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn[disabled]{opacity:.6;cursor:wait}

/* Sections */
.sec{padding:var(--sec) 0;position:relative}
.sec.light{background:#fff}
.sec.tint{background:var(--tint)}
.sec.dark,.dark{background:var(--ink);color:#fff}
.dark p{color:rgba(255,255,255,.78)}
.sec-head{margin-bottom:clamp(44px,6vw,80px);align-items:end}
.sec-lead .lead{margin:0}
.kicker{display:flex;align-items:center;gap:14px;margin:0 0 22px;font-size:13px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--deep);line-height:1.3}
.kicker::before{content:"";width:34px;height:2px;background:currentColor;flex:none}
.dark .kicker{color:var(--coral)}
.lead{font-size:var(--fs-lead);line-height:1.7;font-weight:300;color:#3a3a3a;max-width:34em}
body[data-lang="en"] .lead{font-weight:400}
.dark .lead{color:rgba(255,255,255,.82)}
.lead-xl{font-size:var(--fs-lead-xl);line-height:1.65;font-weight:500;color:var(--ink);margin:0 0 1.4em}
body[data-lang="zh"] .lead-xl{font-weight:400}
.dark .lead-xl{color:#fff}
.note{font-size:14px;line-height:1.7;color:var(--grey);margin-top:28px;max-width:46em}
.dark .note{color:rgba(255,255,255,.62)}
.head-col.sticky{align-self:start}
@media (min-width:900px){.head-col.sticky{position:sticky;top:120px}}

/* Icons: 24×24 grid, stroke 1.6, round caps/joins, one coral accent */
.ico{fill:none;stroke:var(--ink);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none}
.ico .acc{stroke:var(--coral)}
.dark .ico{stroke:#fff}
.dark .ico .acc{stroke:var(--coral)}
.ico-sm{width:22px;height:22px}
.ico-md{width:44px;height:44px}
.ico-lg{width:48px;height:48px}
.ico-xl{width:48px;height:48px}

/* Hero */
.hero{position:relative;overflow:hidden;min-height:calc(100svh - var(--hh));display:flex;align-items:center;padding:clamp(72px,9vw,128px) 0}
.hero-bg{position:absolute;inset:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:60% 50%}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(26,26,26,.93) 0%,rgba(26,26,26,.86) 34%,rgba(26,26,26,.42) 62%,rgba(26,26,26,.04) 100%)}
.hero-in{position:relative;z-index:1}
.hero .kicker{margin-bottom:30px}
.hero h1{max-width:none}
.display{display:block;font-size:var(--fs-display);font-weight:800;line-height:.98;letter-spacing:-.045em;margin-left:-.04em}
body[data-lang="zh"] .display{font-weight:800}
.h1-sub{display:block;max-width:15em;margin-top:clamp(18px,2.4vw,30px);font-size:clamp(20px,2.4vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.01em;color:#fff}
.hero-lead{margin:clamp(26px,3vw,38px) 0 0;max-width:30em;font-size:var(--fs-lead);font-weight:300;line-height:1.7;color:rgba(255,255,255,.88)}
body[data-lang="en"] .hero-lead{font-weight:400}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-top:clamp(34px,4vw,52px)}

/* Key figures */
.figures{padding:clamp(72px,9vw,128px) 0}
.figs{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
.figs li{padding:0 clamp(20px,3vw,48px);border-left:1px solid var(--line);display:flex;flex-direction:column;justify-content:flex-start}
.figs li:first-child{border-left:0;padding-left:0}
.fig{display:block;font-size:var(--fs-fig);font-weight:800;line-height:1;letter-spacing:-.04em;color:var(--ink);white-space:nowrap}
body[data-lang="zh"] .fig{font-weight:900;letter-spacing:-.03em}
.fig .u{font-size:.34em;font-weight:700;letter-spacing:0;margin-left:.2em;color:var(--deep)}
.fig-cap{display:block;margin-top:22px;padding-top:18px;border-top:3px solid var(--coral);max-width:14em;font-size:15px;font-weight:500;line-height:1.5;color:var(--grey);width:min(100%,14em)}

/* About INTAG */
.points{list-style:none;margin:0;padding:0}
.points li{display:flex;align-items:center;gap:26px;padding:26px 0;border-top:1px solid rgba(255,255,255,.18);font-size:clamp(18px,1.6vw,21px);font-weight:700;line-height:1.3}
.points li:last-child{border-bottom:1px solid rgba(255,255,255,.18)}
.points .ico{width:44px;height:44px}
.dark .note{margin-top:32px}

/* Tiles (home) */
.tri{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(24px,3vw,44px)}
.tile{display:block;text-decoration:none}
.tile-img{overflow:hidden;aspect-ratio:3/2;background:var(--tint);margin-bottom:28px}
.tile-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.tile:hover .tile-img img{transform:scale(1.05)}
.tile h3{font-size:clamp(21px,1.9vw,24px);margin-bottom:12px}
.tile p{font-size:16px;color:var(--grey);margin-bottom:18px;max-width:26em}
.more{display:inline-flex;align-items:center;gap:12px;font-size:15px;font-weight:700;color:var(--deep);border-bottom:2px solid var(--coral);padding-bottom:3px}
.more::after{content:"→";transition:transform .18s}
.tile:hover .more::after{transform:translateX(5px)}

/* Coral band */
.band{background:var(--coral);color:var(--ink);padding:clamp(64px,8vw,112px) 0}
.band .g{align-items:center}
.band h2{font-size:clamp(28px,3.4vw,44px);margin-bottom:16px}
.band p{font-size:var(--fs-lead);font-weight:500;margin:0;color:var(--ink)}
.band-cta{display:flex}
@media (min-width:900px){.band-cta{justify-content:flex-end}}

/* Inner page header */
.phead{padding:clamp(72px,10vw,148px) 0 clamp(64px,8vw,112px);position:relative;overflow:hidden}
.phead h1{font-size:var(--fs-h1);line-height:1.1;max-width:14em}
body[data-lang="zh"] .phead h1{font-weight:900;letter-spacing:-.01em}
.phead .kicker{margin-bottom:28px}
.phead-lead{margin-top:clamp(8px,1.5vw,20px)}
.phead .lead{margin:0}
.phead.slim{padding:clamp(56px,7vw,96px) 0 clamp(48px,6vw,80px)}
.phead.slim h1{font-size:clamp(34px,4.6vw,60px)}
.phead.slim .lead{margin:22px 0 32px}
.subnav{display:flex;flex-wrap:wrap;gap:12px;margin:clamp(20px,3vw,40px) 0 0}
.subnav a{display:inline-flex;align-items:center;text-decoration:none;font-size:15px;font-weight:600;min-height:44px;padding:0 22px;border:1.5px solid rgba(255,255,255,.4);border-radius:999px;color:#fff;transition:.18s}
.subnav a:hover{background:var(--coral);border-color:var(--coral);color:var(--ink)}

/* About */
.bleed{margin:0;height:clamp(240px,34vw,500px);overflow:hidden;background:var(--ink)}
.bleed img{width:100%;height:100%;object-fit:cover}
.story .prose{font-size:18px;line-height:1.85;max-width:36em;color:#2e2e2e;margin-bottom:1.6em}
.story .pull{font-size:clamp(20px,2vw,26px);font-weight:700;line-height:1.4;letter-spacing:-.01em;max-width:20em;margin:2.2em 0;padding-left:28px;border-left:5px solid var(--coral);color:var(--ink)}
body[data-lang="en"] .story .pull{font-weight:700}
.duo{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,80px)}
.person{border-top:3px solid var(--coral);padding-top:34px}
.person h3{font-size:clamp(24px,2.3vw,30px);margin-bottom:14px;color:#fff}
.person .role{font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--coral);margin-bottom:22px;line-height:1.5}
.person p:last-child{font-size:18px;margin:0}

/* Services */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(28px,4vw,64px)}
.step{border-top:1px solid var(--ink);padding-top:30px}
.step-n{display:block;font-size:clamp(44px,4.2vw,56px);font-weight:800;line-height:.9;letter-spacing:-.05em;color:var(--blush);margin-bottom:30px}
.step .ico{margin-bottom:22px}
.step h3{font-size:clamp(24px,2.4vw,32px);margin-bottom:12px}
.step p{font-size:17px;color:#444;margin:0;max-width:24em}
.advs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(32px,4.4vw,72px)}
.adv{border-top:3px solid var(--coral);padding-top:36px}
.adv .ico{margin-bottom:34px}
.adv h3{font-size:clamp(22px,2vw,26px);line-height:1.15;margin-bottom:18px;color:#fff}
.adv p{font-size:16px;margin:0;max-width:22em}
.venues{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,2.4vw,36px)}
.venues li{margin:0}
.venues img{width:100%;aspect-ratio:3/2;object-fit:cover;background:var(--tint)}
.v-label{display:flex;align-items:center;gap:12px;margin-top:16px;font-size:clamp(18px,1.7vw,21px);font-weight:700;line-height:1.3}
.v-label .ico{width:24px;height:24px}
.tiers{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,2.4vw,36px);align-items:stretch}
.tier{background:#fff;border:1px solid var(--line);border-top:4px solid var(--ink);padding:clamp(28px,3vw,44px)}
.tier:nth-child(2){border-top-color:var(--coral)}
.tier h3{font-size:clamp(22px,2vw,26px)}
.tier-price{margin:30px 0 8px;font-size:clamp(34px,3.4vw,44px);font-weight:800;line-height:1;letter-spacing:-.04em;white-space:nowrap;word-spacing:-.2em}
body[data-lang="zh"] .tier-price{font-weight:900;letter-spacing:-.03em}
.tier-price small{font-size:.3em;font-weight:700;letter-spacing:0;color:var(--grey);margin:0 .25em 0 0;vertical-align:.5em}
body[data-lang="zh"] .tier-price small{vertical-align:.55em}
.tier-price small:last-child{margin:0 0 0 .3em}
.tier-cap{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--grey);margin-bottom:28px;text-transform:uppercase}
.tier dl{margin:0;border-top:1px solid var(--line)}
.tier dl>div{display:flex;justify-content:space-between;gap:20px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14.5px;line-height:1.5}
.tier dt{color:var(--grey);flex:none;max-width:48%}
.tier dd{margin:0;text-align:right;font-weight:600}
.addons{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(20px,4vw,64px);margin-top:clamp(48px,6vw,88px);padding-top:40px;border-top:1px solid var(--ink)}
.addons h3{margin-bottom:10px}
.addons p{font-size:16px;color:var(--grey);margin:0}
.cta-row{margin:44px 0 0}

/* Demo */
.results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
.result{padding:0 clamp(20px,2.8vw,44px);border-left:1px solid var(--line)}
.result:first-child{border-left:0;padding-left:0}
.big{font-size:clamp(48px,5vw,68px);font-weight:800;line-height:.95;letter-spacing:-.05em;margin:0 0 6px;color:var(--ink);white-space:nowrap}
.big small{font-size:.26em;font-weight:700;letter-spacing:0;color:var(--deep);margin-left:.18em}
.result .label{font-size:13px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--deep);margin:0 0 20px}
.bar{height:6px;background:var(--line);margin-bottom:30px;position:relative}
.bar i{position:absolute;left:0;top:0;bottom:0;background:var(--coral);display:block}
.result h3{font-size:clamp(20px,1.9vw,24px);margin-bottom:10px;min-height:2.6em}
.result p:last-child{font-size:15px;color:var(--grey);margin:0}
.video-wrap{background:#000;aspect-ratio:16/9;max-width:1100px;margin:0 auto}
.video-wrap video{width:100%;height:100%;display:block;object-fit:contain}
.demo-facts{list-style:none;margin:clamp(48px,6vw,80px) 0 0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(24px,3vw,48px)}
.demo-facts li{border-top:2px solid rgba(255,255,255,.22);padding-top:24px}
.demo-facts b{display:block;font-size:clamp(20px,1.8vw,23px);font-weight:700;line-height:1.3;margin-bottom:12px;color:#fff}
.demo-facts span{display:block;font-size:14.5px;line-height:1.65;color:rgba(255,255,255,.7)}
.demo-facts .fact-num b{font-size:clamp(34px,3.6vw,48px);font-weight:800;letter-spacing:-.04em;line-height:1;color:var(--coral);margin-bottom:14px}
.demo-facts .fact-num b small{font-size:.38em;letter-spacing:0;color:#fff}

/* Contact */
.contact-grid{display:grid;grid-template-columns:7fr 5fr;gap:clamp(32px,6vw,96px);align-items:start}
.form .field{margin-bottom:24px}
.field-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px}
.form label{display:block;font-size:14px;font-weight:700;letter-spacing:.02em;margin-bottom:10px}
.form .req,.form .opt{font-style:normal;font-weight:400;color:var(--grey);font-size:13px}
.form input[type=text],.form input[type=email],.form textarea{width:100%;font:inherit;font-size:17px;font-weight:400;color:var(--ink);background:#fff;border:1.5px solid #c9c4c1;border-radius:4px;padding:0 18px;height:56px;transition:border-color .15s,box-shadow .15s,background .15s}
.form input:hover,.form textarea:hover{border-color:var(--ink)}
.form textarea{resize:vertical;height:auto;min-height:140px;padding:16px 18px;line-height:1.6}
.form input:focus,.form textarea:focus{outline:0;border-color:var(--ink);box-shadow:0 0 0 3px var(--coral)}
.form [aria-invalid="true"]{border-color:var(--deep);background:#fff7f5}
.err{color:var(--deep);font-size:14px;margin:8px 0 0}
.consent{font-size:14px;color:var(--grey);margin:6px 0 28px}
.consent a{color:var(--ink);font-weight:600}
.status{margin-top:22px;padding:16px 18px;font-size:15.5px;border-left:4px solid var(--ink);background:var(--tint)}
.status.ok{border-left-color:var(--coral);background:var(--blush)}
.status.fail{border-left-color:var(--deep)}
.status a{font-weight:600}
.contact-card{padding:clamp(32px,3.6vw,52px);position:relative}
.contact-card h2{font-size:13px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--coral);margin-bottom:28px}
.contact-list{list-style:none;margin:0 0 32px;padding:0}
.contact-list li{display:flex;gap:16px;align-items:flex-start;padding:20px 0;border-top:1px solid rgba(255,255,255,.16)}
.contact-list .ico{margin-top:8px}
.contact-list .lbl{display:block;font-size:13px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.6);margin-bottom:4px}
.contact-list a{font-size:clamp(22px,2.3vw,30px);font-weight:700;letter-spacing:-.01em;text-decoration:none;color:#fff;word-break:break-all}
.contact-list a:hover{color:var(--coral)}
.contact-card .who{font-size:17px;font-weight:500;color:#fff;margin-bottom:0;line-height:1.6}
.contact-card .who span{font-weight:300;color:rgba(255,255,255,.7);font-size:15px}
.contact-card hr{border:0;border-top:1px solid rgba(255,255,255,.16);margin:32px 0}
.contact-card h3{font-size:16px;color:#fff;margin:0 0 6px;font-weight:700}
.contact-card .small{font-size:14px;line-height:1.7;color:rgba(255,255,255,.66);margin-bottom:20px}

/* Legal / credits */
.legal{max-width:760px}
.legal h2{font-size:22px;margin:44px 0 10px}
.legal p,.legal li{font-size:16.5px}
.credits{padding-left:20px;max-width:46em;font-size:15px;color:var(--grey)}
.credits li{margin-bottom:6px}
.credits a{color:var(--ink)}

/* Footer */
.site-footer{background:#111;color:#fff;padding:clamp(64px,8vw,104px) 0 36px;border-top:1px solid rgba(255,255,255,.12)}
.foot-grid{display:grid;grid-template-columns:1.2fr 1.6fr .9fr 1.1fr;gap:clamp(28px,4vw,64px)}
.foot-brand img{width:170px;height:auto;margin-bottom:20px}
.foot-brand p{font-size:18px;font-weight:500;color:#fff;max-width:12em;line-height:1.5}
.site-footer h2{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--coral);margin:0 0 20px;font-weight:700}
.site-footer p,.site-footer li{font-size:15px;color:rgba(255,255,255,.78);line-height:1.8}
.site-footer strong{color:#fff}
.site-footer .small{font-size:13px;color:rgba(255,255,255,.58)}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer a{text-decoration:none}
.site-footer a:hover{color:var(--coral)}
.copyright{margin:clamp(48px,6vw,80px) 0 0;padding-top:24px;border-top:1px solid rgba(255,255,255,.14);font-size:13px!important;color:rgba(255,255,255,.55)!important}
.credit-line{margin-left:18px}
.credit-line a{text-decoration:underline}

/* Reveal on scroll (JS adds .reveal only to off-screen items; content is visible without JS) */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1);transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}.tile-img img,.btn,.btn::after{transition:none}}

/* Responsive */
@media (max-width:1100px){
  .nav{gap:24px}
  .foot-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
}
@media (max-width:900px){
  :root{--hh:64px}
  .logo-link img{width:116px}
  .burger{display:block;margin-left:0}
  .lang{margin-left:auto}
  .nav{display:none;position:absolute;left:0;right:0;top:var(--hh);flex-direction:column;gap:0;margin:0;background:#fff;border-bottom:1px solid var(--line);padding:8px var(--pad) 20px;font-size:18px}
  .menu-open .nav{display:flex}
  .nav a{padding:16px 0;border-bottom:1px solid var(--line)}
  .hero{min-height:min(88svh,760px);align-items:flex-end;padding:64px 0 56px}
  .hero-bg img{object-position:68% 50%}
  .hero-bg::after{background:linear-gradient(180deg,rgba(26,26,26,.3) 0%,rgba(26,26,26,.62) 30%,rgba(26,26,26,.93) 62%,rgba(26,26,26,.96) 100%)}
  .figs{grid-template-columns:1fr;gap:44px}
  .figs li,.figs li:first-child{border-left:0;padding:0}
  .figs li+li{border-top:1px solid var(--line);padding-top:44px}
  .tri,.steps,.advs,.venues,.tiers,.results,.duo,.addons,.contact-grid{grid-template-columns:1fr}
  .venues{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .results{gap:56px}
  .result,.result:first-child{border-left:0;padding:0}
  .result+.result{border-top:1px solid var(--line);padding-top:48px}
  .result h3{min-height:0}
  .demo-facts{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .steps{gap:48px}
  .advs{gap:56px}
  .tri{gap:48px}
  .band-cta{margin-top:8px}
}
@media (max-width:640px){
  body{font-size:16.5px}
  .btn{width:100%}
  .hero-cta .btn,.band-cta .btn{width:100%}
  .field-row{grid-template-columns:1fr}
  .venues{grid-template-columns:1fr}
  .demo-facts{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .credit-line{display:block;margin:8px 0 0}
  .step-n{font-size:44px}
  .tier-price{font-size:clamp(34px,10vw,42px)}
  .kicker{font-size:12.5px}
}

/* English price lines are longer: put "from NT$" above the figure */
body[data-lang="en"] .tier-price{font-size:clamp(30px,3vw,40px);word-spacing:0;letter-spacing:-.03em}
body[data-lang="en"] .tier-price small:first-child{display:block;margin:0 0 10px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;vertical-align:baseline}
@media (max-width:1060px){.tiers{grid-template-columns:1fr}}

/* v6 refinements */
.fig .w{font-size:.62em;letter-spacing:-.02em}
body[data-lang="en"] .fig .w{font-size:.72em}
.step-adv{margin:20px 0 0;padding-top:16px;border-top:2px solid var(--coral);font-size:16px;font-weight:700;color:var(--ink)!important;line-height:1.5}
.demo-facts{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:900px){.demo-facts{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}
@media (max-width:640px){.demo-facts{grid-template-columns:1fr}}

/* Contact page: the form is the page */
.contact-hero{padding-top:clamp(40px,5vw,72px);padding-bottom:clamp(64px,8vw,112px)}
.contact-main h1{font-size:var(--fs-h1);line-height:1.1;margin:0 0 16px}
.contact-main .lead{margin:0 0 clamp(28px,3vw,40px);max-width:32em}
.form label{font-size:15px;margin-bottom:8px}
.form .req{color:var(--deep);font-size:15px;font-weight:700}
.form-foot{display:flex;align-items:center;gap:24px 32px;flex-wrap:wrap;margin-top:8px}
.form-foot .consent{margin:0;flex:1 1 260px;max-width:30em}
.contact-card{position:sticky;top:calc(var(--hh) + 24px)}
@media (max-width:900px){.contact-card{position:static}.form-foot .btn{width:100%}}
@media (max-width:640px){.field-row{gap:0}}

/* ===== v7 type & spacing system (see research/xeeio-type-system.md) =====
   Scale: ratio 1.25 on a 17px base; 8-pt spacing; measure 36em (~70 Latin / ~36 CJK chars). */
:root{--measure:36em;--r:4px;--ease:cubic-bezier(.2,.7,.2,1)}
body{line-height:1.65;font-feature-settings:"kern","liga"}
body[data-lang="zh"]{line-height:1.85;letter-spacing:.01em}
body[data-lang="zh"] h1,body[data-lang="zh"] h2,body[data-lang="zh"] h3{letter-spacing:0;line-height:1.3}
h1{line-height:1.1;letter-spacing:-.025em}
h2{line-height:1.15;letter-spacing:-.02em}
h1,h2,h3,.display,.fig,.big,.tier-price{font-variant-numeric:lining-nums tabular-nums}
.display{letter-spacing:-.035em;line-height:1}
body[data-lang="zh"] .display{letter-spacing:-.03em}
.h1-sub{letter-spacing:-.015em}
h1,h2,h3{font-weight:700}
.display{font-weight:800}
p{max-width:var(--measure)}
.sec-head{margin-bottom:clamp(40px,5vw,64px)}
/* radii: one value, pills only for the language switch and sub-nav */
.tier,.contact-card,.status,.tile-img,.venues img,.video-wrap,.person,.addons{border-radius:var(--r)}
.tile-img,.venues img,.video-wrap{overflow:hidden}
.contact-card{border-radius:var(--r)}
/* nav: animated underline */
.nav a{position:relative;border-bottom:0;padding:8px 0}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;background:var(--coral);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease)}
.nav a:hover::after,.nav a[aria-current="page"]::after{transform:scaleX(1)}
/* press + focus states */
.btn:active{transform:translateY(1px)}
.btn:focus-visible,.nav a:focus-visible,.lang button:focus-visible,.tile:focus-visible{outline:3px solid var(--coral);outline-offset:3px;border-radius:var(--r)}
.dark :focus-visible{outline-color:#fff}
.lang button{transition:background .15s,color .15s}
.lang button:not([aria-pressed="true"]):hover{background:rgba(26,26,26,.08)}
.subnav a:focus-visible{outline-color:#fff}
.tile{transition:transform .3s var(--ease)}
.tile .more{transition:gap .2s}
.site-footer a{transition:color .15s}
.site-footer a:focus-visible{outline-color:#fff}
::selection{background:var(--coral);color:var(--ink)}
@media (max-width:640px){
  body{font-size:16.5px}
  h3{font-size:20px}
}
.tile p,.fig-cap,.result p,.step p,.adv p,.person p,.note,.demo-facts span,.hero-lead,.lead,.lead-xl{text-wrap:balance}
.prose,.story p,.pull{text-wrap:pretty}
body[data-lang="zh"]{line-break:strict}
.contact-hero{padding-top:clamp(32px,4vw,48px)}
.form textarea{min-height:120px}
.contact-list a{font-size:clamp(20px,1.9vw,24px)}
.contact-main .lead{margin-bottom:clamp(24px,2.6vw,32px)}
.form .field{margin-bottom:20px}
.step{display:flex;flex-direction:column}
.step .step-adv{margin:auto 0 0;padding-top:16px;border-top:2px solid var(--coral)}
.step p:not(.step-adv){margin:0 0 28px}
.contact-main .lead{max-width:36em}
.sec-head .sec-lead{padding-top:8px}
.big small{font-size:.34em}
.consent a{white-space:nowrap}

/* ===== v8: icon system + tighter rhythm =====
   Icons: 24×24 grid, 1.6 stroke, round caps/joins, Ink + one Coral accent (Deep red accent on Blush tiles for contrast).
   Sizes: feature 40 in a 72 Blush tile · inline/list 22 · meta 18. */
:root{--sec:clamp(56px,7vw,104px)}
.ico-sm{width:22px;height:22px}

/* tighter vertical rhythm */
.hero{padding:clamp(56px,7vw,104px) 0}
.figures{padding:var(--sec) 0}
.sec-head{margin-bottom:clamp(32px,4vw,48px)}
.band{padding:clamp(48px,6vw,88px) 0}
.phead{padding:clamp(56px,7vw,104px) 0 clamp(48px,6vw,80px)}
.phead.slim{padding:clamp(48px,6vw,80px) 0 clamp(40px,5vw,64px)}
.contact-hero{padding-bottom:clamp(56px,7vw,96px)}
.site-footer{padding:clamp(48px,6vw,80px) 0 32px}
.copyright{margin-top:clamp(40px,5vw,56px)}
.tile-img{margin-bottom:20px}
.addons{margin-top:clamp(40px,5vw,64px);padding-top:32px}
.demo-facts{margin-top:clamp(36px,4.5vw,56px)}
.cta-row{margin-top:36px}
.dark .note{margin-top:24px}
.note{margin-top:24px}

/* home: figures with icon tiles */
.note-ico{display:flex;gap:12px;align-items:flex-start}
.note-ico .ico{margin-top:3px}
.note-ico .ico .acc{stroke:var(--coral)}
/* home: venue grid */
.vgrid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:clamp(12px,1.6vw,24px)}
.vgrid a{display:flex;flex-direction:column;align-items:flex-start;gap:20px;height:100%;padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--r);text-decoration:none;font-weight:700;font-size:clamp(16px,1.3vw,18px);line-height:1.3;transition:border-color .2s,transform .25s var(--ease),box-shadow .25s}
.vgrid a:hover{border-color:var(--ink);transform:translateY(-3px);box-shadow:0 10px 24px rgba(26,26,26,.08)}
.vgrid a:focus-visible{outline:3px solid var(--coral);outline-offset:3px}
@media (max-width:1100px){.vgrid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:640px){.vgrid{grid-template-columns:repeat(2,minmax(0,1fr))}.vgrid a{padding:20px}}
/* home: contact band meta */
.band-meta{list-style:none;margin:20px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px 28px}
.band-meta li{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600}
.band-meta .ico .acc{stroke:var(--ink)}
.band-meta a{text-decoration:none;border-bottom:1.5px solid rgba(26,26,26,.4)}
.band-meta a:hover{border-color:var(--ink)}

/* about: approach cards, companies */
.icards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2.4vw,32px)}
.icard{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:clamp(24px,2.6vw,36px)}
.icard h3{margin-bottom:8px}
.icard p{margin:0;color:var(--grey);font-size:16px;text-wrap:balance}
.ents{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(16px,2.4vw,32px)}
.ent{display:flex;gap:24px;align-items:flex-start;padding:clamp(24px,2.6vw,36px);border:1px solid var(--line);border-radius:var(--r);border-top:4px solid var(--ink)}
.ent:nth-child(2){border-top-color:var(--coral)}
.ent h3{margin-bottom:4px}
.ent-meta{margin:0 0 16px;color:var(--grey);font-size:15px;font-weight:600}
.ent-list{list-style:none;margin:0;padding:0}
.ent-list li{display:flex;gap:10px;align-items:center;font-size:15.5px;line-height:1.5;padding:4px 0}
.person{padding-top:32px}

/* services */
.step-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.step-top .step-n{margin:0}
.step{padding-top:28px}
.tier-head{display:flex;align-items:center;gap:16px}
.tier-price{margin-top:24px}
.tier dl>div{align-items:center;gap:12px}
.tier dt{flex:1 1 auto;max-width:none}
.tier dd{flex:none;max-width:52%}
.addon{display:flex;gap:20px;align-items:flex-start}
.v-label{margin-top:14px}
.venues{row-gap:clamp(24px,3vw,40px)}

/* demo */
.demo-facts li{padding-top:24px}

/* contact */
.contact-list li{align-items:center;gap:16px;padding:16px 0}
.contact-list .ico{margin-top:0}
.contact-list .reply{display:block;font-size:17px;font-weight:600;line-height:1.5;color:#fff}
.contact-card h2{margin-bottom:20px}

/* thanks */

/* footer meta */
.foot-meta li{display:flex;gap:10px;align-items:center}
.foot-meta .ico{opacity:.9}
.site-footer ul.foot-meta{margin:0}

@media (max-width:900px){
  .icards,.ents{grid-template-columns:1fr}
  .tri{gap:36px}
  .steps{gap:40px}
  .results{gap:40px}
  .result+.result{padding-top:40px}
  .figs{gap:32px}
  .figs li+li{padding-top:32px}
}
.tier-head{flex-direction:column;align-items:flex-start;gap:16px}
.tier-price{margin-top:20px}

/* ===== v9: plain line icons, no tiles. Sized from research/icon-benchmarks.md =====
   Feature 56 (mobile 44) · venue card 44 · contact/label 28 · row check 20 · meta 22.
   Stroke is set in px per size (units = px × 24 ÷ size) so lines stay 1.5–2.2 px at every size. */
.ico{width:calc(var(--s,24)*1px);height:calc(var(--s,24)*1px);stroke-width:calc(var(--eff,1.6)*24/var(--s,24))}
.ico-tile,.ico-chip{display:block;width:auto;height:auto;background:none;box-shadow:none;border-radius:0;--s:56;--eff:2.2;margin-left:calc(var(--s)*-.125px);line-height:0}
.ico-tile .ico .acc{stroke:var(--coral)}
.sec.light .ico-tile .ico .acc,.sec.tint .ico-tile .ico .acc{stroke:var(--coral)}
.ico-tile-lg{--s:64;--eff:2.2;margin-bottom:12px}
.ico-chip{--s:28;--eff:1.8;margin-left:calc(var(--s)*-.0625px)}
.vgrid a .ico-tile{--s:44;--eff:2}
.ico-tile+h3,.tier-head .ico-tile,.person .ico-tile{margin-bottom:0}
.figs li .ico-tile,.icard .ico-tile,.person .ico-tile{margin-bottom:20px}
.icard .ico-tile{margin-bottom:20px}
.step-top .ico-tile{margin-bottom:0}
.tier-head{gap:16px}
.ent{gap:20px}
.ent .ico-tile{margin-left:calc(var(--s)*-.0625px)}
.addon{gap:20px}
.addon .ico-tile{margin-left:calc(var(--s)*-.0625px)}
.result .ico-tile,.demo-facts .ico-tile{--s:48;--eff:2.1;margin-bottom:16px}
.v-label .ico{--s:28;--eff:1.8;width:28px;height:28px}
.tier dl>div .ico,.ent-list .ico,.note-ico .ico{--s:20;--eff:1.5}
.band-meta .ico,.foot-meta .ico{--s:22;--eff:1.6}
.contact-list .ico{--s:28;--eff:1.8;margin:0}
.contact-list li{gap:20px}
.note-ico .ico{margin-top:2px}
@media (max-width:640px){
  .ico-tile,.ico-chip{--s:44;--eff:2}
  .ico-chip{--s:28;--eff:1.8}
  .ico-tile-lg{--s:56;--eff:2.1}
  .vgrid a .ico-tile{--s:40;--eff:2}
  .v-label .ico{--s:26;--eff:1.7;width:26px;height:26px}
}

/* v9 fixes: step rows share one grid so the coral rules align; tighter tier cards */
.steps{grid-template-rows:none}
@supports (grid-template-rows:subgrid){
  .steps{grid-template-rows:repeat(4,auto);row-gap:0}
  .step{display:grid;grid-row:span 4;grid-template-rows:subgrid;row-gap:0;align-content:start}
  .step .step-adv{margin:0}
  .step p:not(.step-adv){margin:0}
  .step h3{margin-bottom:12px}
  .step p:not(.step-adv){padding-bottom:28px}
}
@media (max-width:900px){.steps{grid-template-rows:none;row-gap:40px}.step{grid-row:auto;grid-template-rows:none;display:flex}}
.tier{padding:clamp(24px,2.4vw,32px)}
.tier dl>div{gap:10px}
.tier dd{max-width:60%}
.tier dt{flex:1 1 0;min-width:0}

/* v10: expanded copy */
.body-l{font-size:clamp(16px,1.25vw,18px);line-height:1.8;color:rgba(255,255,255,.78);margin:0 0 8px;max-width:var(--measure)}
.dark .lead-xl+.body-l{margin-top:-4px}
.icards.four{grid-template-columns:repeat(4,minmax(0,1fr))}
.addons-head{align-items:start;margin-top:clamp(48px,6vw,88px);padding-top:32px;border-top:1px solid var(--ink);margin-bottom:clamp(24px,3vw,40px)}
.addons-head p{margin:0;color:var(--grey);font-size:16px}
.h-sub{font-size:var(--fs-h2);line-height:1.2;margin:0}
.poc{display:flex;gap:20px;align-items:flex-start;margin-top:clamp(16px,2.4vw,32px);padding:clamp(24px,2.6vw,36px);background:#fff;border:1px solid var(--line);border-radius:var(--r);border-left:4px solid var(--coral)}
.poc .ico-tile{margin-left:calc(var(--s)*-.0625px)}
.poc h3{margin-bottom:8px}
.poc p{margin:0;color:var(--grey);font-size:16px;max-width:52em}
.venues li p{margin:14px 0 0;font-size:15.5px;line-height:1.7;color:var(--grey);max-width:34em}
.v-label{margin-top:16px}
.faq{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:clamp(32px,5vw,80px)}
.qa{padding:clamp(22px,2.4vw,32px) 0;border-top:1px solid var(--line)}
.qa h3{font-size:clamp(18px,1.4vw,20px);line-height:1.4;margin:0 0 10px}
.qa p{margin:0;color:var(--grey);font-size:16px;max-width:34em}
.faq+.cta-row{margin-top:clamp(32px,4vw,48px)}
.ent-desc{margin:0 0 16px;font-size:16px;line-height:1.7;color:var(--ink);max-width:30em}
.ent-meta{margin-bottom:6px}
.hints{margin:clamp(16px,2vw,24px) 0 clamp(20px,2.4vw,32px);padding:20px 24px;background:var(--tint);border-radius:var(--r);border-left:4px solid var(--coral)}
.hints p{margin:0 0 10px;font-size:15.5px;font-weight:600;max-width:none}
.hints ul{list-style:none;margin:0;padding:0}
.hints li{display:flex;gap:10px;align-items:flex-start;font-size:15.5px;line-height:1.6;padding:3px 0;color:var(--ink)}
.hints .ico{--s:20;--eff:1.5;margin-top:3px;flex:none}
#why .icard p,.icards.four .icard p{font-size:16px}
@media (max-width:1100px){.icards.four{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:900px){.faq{grid-template-columns:1fr}.addons-head{grid-template-columns:1fr}.addons-head .c6+.c6{margin-top:12px}}
@media (max-width:640px){.icards.four{grid-template-columns:1fr}.poc{flex-direction:column;gap:12px}}

/* v10b: mechanism flow + comparison */
.flow{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(24px,3.2vw,48px);counter-reset:f}
.flow li{margin:0}
.flow-top{display:flex;align-items:center;gap:18px;margin-bottom:24px}
.flow-top .ico-tile{--s:56;--eff:2.1;flex:none}
.flow li:not(:last-child) .flow-top::after{content:"";flex:1;height:0;border-top:1.5px solid var(--ink);position:relative;margin-right:-6px;
  background:linear-gradient(var(--coral),var(--coral)) no-repeat;background-size:0 0}
.flow li:not(:last-child) .flow-top::before{content:"";order:3;width:9px;height:9px;border-top:1.5px solid var(--ink);border-right:1.5px solid var(--ink);transform:rotate(45deg);margin-left:-14px;flex:none}
.flow li:not(:last-child) .flow-top::after{order:2}
.flow-n{order:1;font-family:'Montserrat',sans-serif;font-weight:700;font-size:15px;letter-spacing:.08em;color:var(--grey);font-variant-numeric:lining-nums tabular-nums}
.flow h3{margin:0 0 10px}
.flow p{margin:0;color:var(--grey);font-size:16px}
.cmp{border-top:2px solid var(--ink)}
.cmp-row{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr) minmax(0,1.2fr);gap:clamp(16px,2.4vw,40px);align-items:center;padding:clamp(16px,1.8vw,22px) 0;border-bottom:1px solid var(--line)}
.cmp-h{font-size:14px;font-weight:700;letter-spacing:.04em;color:var(--grey);padding:16px 0;align-items:end}
.cmp-h .us{color:var(--deep,#BF2A16);font-size:16px;letter-spacing:.08em}
.cmp-k{display:flex;gap:14px;align-items:center;font-weight:700;font-size:17px}
.cmp-k .ico{--s:28;--eff:1.8;flex:none}
.cmp-a{color:var(--grey);font-size:16px;line-height:1.6}
.cmp-b{font-weight:600;font-size:16px;line-height:1.6;padding-left:20px;border-left:3px solid var(--coral)}
.cmp-tag{display:none}
@media (max-width:900px){
  .flow{grid-template-columns:1fr;gap:36px}
  .flow li:not(:last-child) .flow-top::after,.flow li:not(:last-child) .flow-top::before{display:none}
  .cmp-h{display:none}
  .cmp-row{grid-template-columns:1fr;gap:10px;align-items:start;padding:20px 0}
  .cmp-tag{display:block;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--grey);margin-bottom:2px}
  .cmp-b .cmp-tag{color:var(--deep,#BF2A16)}
}
.poc p{max-width:none;text-wrap:pretty}
.qa p,.venues li p{text-wrap:pretty}

/* v11: Smart Building */
.sb-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(24px,3.2vw,48px)}
.sb-col{border-top:1px solid rgba(255,255,255,.28);padding-top:28px}
.sb-col .ico-tile{--s:56;--eff:2.1;margin-bottom:20px;display:block}
.sb-col h3{margin:0 0 6px;color:#fff}
.sb-sub{margin:0 0 20px;font-size:15px;font-weight:600;color:var(--coral)!important}
.sb-list{list-style:none;margin:0;padding:0}
.sb-list li{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-top:1px solid rgba(255,255,255,.12)}
.sb-list li:first-child{border-top:0;padding-top:0}
.sb-list .ico{--s:20;--eff:1.6;flex:none;margin-top:3px}
.sb-list b{display:block;font-size:16px;line-height:1.5;color:#fff;margin-bottom:2px}
.sb-list span{display:block;font-size:15px;line-height:1.7;color:rgba(255,255,255,.72)}
.sec.dark .sb-grid+.note{margin-top:clamp(28px,3vw,40px)}
.sb-quote{display:flex;flex-wrap:wrap;gap:24px 48px;align-items:center;justify-content:space-between;margin-top:clamp(40px,5vw,64px);padding:clamp(24px,3vw,40px);border:1px solid rgba(255,255,255,.28);border-left:4px solid var(--coral);border-radius:var(--r)}
.sb-quote h3{margin:0 0 8px;color:#fff}
.sb-quote p{margin:0;max-width:34em}
.sb-faq{margin-top:clamp(56px,7vw,96px)}
.sb-faq .h-sub{color:#fff;margin-bottom:clamp(20px,2.4vw,32px)}
.sb-faq .faq{margin-top:0}
.sb-faq .qa{border-top-color:rgba(255,255,255,.2)}
.sb-faq .qa h3{color:#fff}
.sb-faq .qa p{color:rgba(255,255,255,.72)}
.sb-home-note{margin:24px 0 0;font-weight:700;font-size:17px;padding-left:16px;border-left:3px solid var(--coral)}
.sec.tint .lead-xl{color:var(--ink)}
@media (max-width:1100px){.sb-grid{grid-template-columns:1fr}.sb-col{padding-top:24px}}
@media (max-width:640px){.sb-quote{flex-direction:column;align-items:flex-start}}

/* v12: key-figures band */
.figures{padding:clamp(36px,4.2vw,60px) 0;border-top:4px solid var(--coral)}
.figs{align-items:stretch}
.figs li{padding:0 clamp(24px,3.2vw,56px);border-left:1px solid var(--line)}
.figs li:first-child{padding-left:0}
.figs li:last-child{padding-right:0}
.figs li .ico-tile{--s:56;--eff:2.1;margin-bottom:18px;display:block}
.fig{font-size:clamp(36px,3.4vw,46px);line-height:1.05;letter-spacing:-.02em;font-weight:800;margin:0 0 6px;display:flex;align-items:baseline;gap:.18em;white-space:nowrap}
body[data-lang="zh"] .fig{font-weight:800;letter-spacing:0}
.fig .u{font-size:.55em;margin-left:0;letter-spacing:0;color:var(--deep);font-weight:700}
.fig .w{font-size:1em;letter-spacing:0}
body[data-lang="en"] .fig .w{font-size:1em}
.fig-t{font-size:var(--fs-h3);line-height:1.3;margin:0 0 8px}
.fig-d{margin:0;font-size:16px;line-height:1.7;color:var(--grey);max-width:24em;text-wrap:pretty}
@media (max-width:900px){
  .figures{padding:clamp(32px,6vw,44px) 0}
  .figs{grid-template-columns:1fr;gap:0}
  .figs li,.figs li:first-child,.figs li:last-child{border-left:0;padding:28px 0;display:grid;grid-template-columns:auto 1fr;column-gap:20px;align-items:start}
  .figs li:first-child{padding-top:0}
  .figs li:last-child{padding-bottom:0}
  .figs li+li{border-top:1px solid var(--line);padding-top:28px}
  .figs li .ico-tile{grid-row:1/4;margin:2px 0 0}
  .fig,.fig-t,.fig-d{grid-column:2}
  .figs li .ico-tile{--s:44}
}

/* v13: key-figures band, three tiers: icon / one-line headline / description */
.figs li{display:block}
.figs li .ico-tile{--s:64;--eff:2.3;margin:0 0 20px;display:block}
.fig-h{font-size:clamp(22px,2.2vw,32px);line-height:1.25;font-weight:800;letter-spacing:0;margin:0 0 9px;color:var(--ink);white-space:nowrap;font-variant-numeric:lining-nums tabular-nums}
.fig-d{margin:0;font-size:16px;line-height:1.7;color:rgba(26,26,26,.7);max-width:24em;text-wrap:pretty}
@media (max-width:900px){
  .figs li,.figs li:first-child,.figs li:last-child{display:block}
  .figs li .ico-tile{--s:52;--eff:2.3;margin:0 0 20px;grid-row:auto}
  .fig-h{font-size:24px}
}
@media (max-width:420px){.fig-h{font-size:22px}}
.fig-h{margin-bottom:6px}.figs li .ico-tile{line-height:0}.figs li .ico-tile .ico{display:block}

/* ===== v15: accordion / tabs / sticky sub-nav (desktop look unchanged) ===== */
details.qa>summary{list-style:none;display:block;cursor:default;position:relative}
details.qa>summary::-webkit-details-marker{display:none}
details.qa>summary::marker{content:""}
.subnav-bar,.tabbar{display:none}
[data-panel][hidden]{display:none!important}

/* ===== v15: mobile (<=768px): compact rows, accordions, tabs, sticky sub-nav ===== */
@media (max-width:768px){
  :root{--sec:48px}
  html{scroll-padding-top:120px}
  body{font-size:16px}
  .sec-head{margin-bottom:22px;row-gap:10px}
  .sec-head .sec-lead{padding-top:0}
  .g{row-gap:14px}
  .lead{font-size:16px;line-height:1.65}
  .lead-xl{font-size:17px;line-height:1.65;margin-bottom:.9em}
  .note{margin-top:16px;font-size:13.5px}
  .cta-row{margin-top:20px}

  /* hero */
  .hero{min-height:min(60svh,500px);padding:36px 0 32px}
  .h1-sub{margin-top:14px}
  .hero-lead{margin-top:16px}
  .hero-cta{flex-wrap:nowrap;gap:10px;margin-top:22px}
  .hero-cta .btn{width:auto;flex:1 1 0;min-height:48px;padding:0 14px;gap:8px;font-size:15px}
  .phead,.phead.slim{padding:32px 0 28px}
  .phead-lead{margin-top:0}

  /* ---- icon-left row pattern ---- */
  /* home key figures */
  .figures{padding:14px 0 12px;border-top-width:3px}
  .figs{gap:0}
  .figs li,.figs li:first-child,.figs li:last-child{display:grid;grid-template-columns:44px minmax(0,1fr);column-gap:16px;align-items:start;padding:14px 0;border-left:0;border-top:0}
  .figs li+li{border-top:1px solid var(--line)}
  .figs li .ico-tile{--s:44;--eff:2.1;grid-row:1/3;margin:0 0 0 -3px}
  .fig-h{font-size:22px;line-height:1.25;margin:0 0 3px;align-self:start}
  .fig-d{font-size:14.5px;line-height:1.6;max-width:none}
  /* home: why no hardware */
  .flow{gap:0}
  .flow li,.flow li:last-child{display:grid;grid-template-columns:44px minmax(0,1fr);column-gap:16px;align-items:start;padding:16px 0;border-top:1px solid var(--line)}
  .flow li:first-child{border-top:0;padding-top:0}
  .flow li:last-child{padding-bottom:0}
  .flow-top{grid-row:1/3;margin:0}
  .flow-top .ico-tile{--s:44;--eff:2.1;margin:0 0 0 -3px}
  .flow-n{display:none}
  .flow h3{font-size:18px;margin:0 0 4px}
  .flow p{font-size:15px;line-height:1.65}
  /* services: process steps */
  .steps{gap:0;row-gap:0}
  .steps .step{display:grid;grid-template-columns:44px minmax(0,1fr);column-gap:16px;align-items:start;padding:16px 0;border-top:1px solid var(--line)}
  .steps .step:first-child{border-top:0;padding-top:0}
  .step>*{grid-column:2}
  .step-top{grid-column:1;grid-row:1/4;margin:0}
  .step-top .ico-tile{--s:44;--eff:2.1;margin:0 0 0 -3px}
  .step-top .step-n{display:none}
  .step h3{font-size:18px;margin:0 0 4px}
  .steps .step p:not(.step-adv){font-size:15px;line-height:1.65;padding-bottom:0;margin:0}
  .step .step-adv{margin:10px 0 0;padding-top:8px;font-size:14.5px}
  /* about approach, add-ons */
  .icards,.icards.four{grid-template-columns:1fr;gap:0}
  .icard{display:grid;grid-template-columns:44px minmax(0,1fr);column-gap:16px;align-items:start;padding:14px 0;background:none;border:0;border-top:1px solid var(--line);border-radius:0}
  .icards .icard:first-child{border-top:0;padding-top:0}
  .icard .ico-tile,.icards.four .icard .ico-tile{--s:44;--eff:2.1;grid-row:1/3;margin:0 0 0 -3px}
  .icard h3{font-size:18px;margin:0 0 4px}
  .icard p,#why .icard p,.icards.four .icard p{font-size:15px;line-height:1.65}
  /* about: companies, team */
  .ents{gap:12px}
  .ent{gap:14px;padding:16px}
  .ent .ico-tile{--s:44;--eff:2.1;margin-left:-3px}
  .ent-desc{font-size:15px;margin-bottom:8px}
  .ent-meta{margin-bottom:4px}
  .duo{gap:22px}
  .person{display:grid;grid-template-columns:44px minmax(0,1fr);column-gap:16px;align-items:start;padding-top:16px}
  .person>*{grid-column:2}
  .person .ico-tile{--s:44;--eff:2.1;grid-column:1;grid-row:1/4;margin:0 0 0 -3px}
  .person h3{font-size:20px;margin-bottom:4px}
  .person .role{margin-bottom:6px;font-size:12px}
  .person p:last-child{font-size:15.5px}
  .bleed{height:120px}
  .story .prose{font-size:16px;line-height:1.75;margin-bottom:1.1em}
  .story .pull{font-size:18px;margin:1.3em 0;padding-left:16px}
  .poc{flex-direction:row;gap:14px;padding:16px;margin-top:16px}
  .poc .ico-tile{--s:44;--eff:2.1;margin-left:-3px}
  .poc h3{font-size:18px;margin-bottom:4px}
  .poc p{font-size:15px;line-height:1.65}
  .addons-head{margin-top:36px;padding-top:20px;margin-bottom:12px;row-gap:8px}
  .addons-head .c6+.c6{margin-top:0}
  .addons-head p{font-size:15px}
  .h-sub{font-size:24px}

  /* home: comparison, compact rows */
  .cmp{border-top:1px solid var(--ink)}
  .cmp-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:6px 14px;padding:12px 0;align-items:start}
  .cmp-k{grid-column:1/-1;gap:10px;font-size:16px}
  .cmp-k .ico{--s:24;--eff:1.7}
  .cmp-a,.cmp-b{font-size:14px;line-height:1.5}
  .cmp-a{padding-right:2px}
  .cmp-b{padding-left:10px;border-left:3px solid var(--coral)}
  .cmp-tag{display:block;font-size:11px;letter-spacing:.06em;margin-bottom:1px}
  /* home: venue grid */
  .vgrid{gap:10px}
  .vgrid a{flex-direction:row;align-items:center;gap:10px;padding:12px;font-size:15px;line-height:1.25}
  .vgrid a .ico-tile{--s:32;--eff:1.9;margin:0;flex:none}
  /* home: Smart Building teaser */
  .sb-home-note{margin-top:14px}
  /* home: learn-more tiles as thumbnail rows */
  .tri{gap:0}
  .tile{display:grid;grid-template-columns:96px minmax(0,1fr);column-gap:14px;align-items:start;padding:14px 0;border-top:1px solid var(--line)}
  .tri .tile:first-child{border-top:0;padding-top:0}
  .tile-img{grid-row:1/4;margin:0;aspect-ratio:4/3}
  .tile h3{font-size:18px;margin:0 0 4px}
  .tile p{font-size:14px;line-height:1.55;margin:0 0 6px}
  .tile .more{font-size:13.5px;width:max-content}
  .band{padding:32px 0}
  .band h2{font-size:26px;margin-bottom:8px}
  .band-meta{margin-top:12px;gap:6px 20px}
  .band-cta{margin-top:0}

  /* services: sticky sub-nav */
  .phead .subnav{display:none}
  .subnav-bar{display:flex;gap:8px;position:sticky;top:var(--hh);z-index:30;padding:8px var(--pad);background:rgba(255,255,255,.96);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .subnav-bar::-webkit-scrollbar{display:none}
  .subnav-bar a{flex:none;display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border:1.5px solid var(--line);border-radius:999px;font-size:14.5px;font-weight:600;text-decoration:none;color:var(--ink);white-space:nowrap}
  .subnav-bar a.on{background:var(--ink);border-color:var(--ink);color:#fff}
  .subnav-bar a:focus-visible{outline-offset:-3px}
  /* services: venues as thumbnail rows */
  .venues{grid-template-columns:1fr;gap:0}
  .venues li{display:grid;grid-template-columns:84px minmax(0,1fr);column-gap:14px;align-items:start;padding:12px 0;border-top:1px solid var(--line)}
  .venues li:first-child{border-top:0;padding-top:0}
  .venues img{grid-row:1/3;aspect-ratio:1/1;height:84px;width:84px}
  .v-label{margin:0 0 3px;font-size:17px}
  .venues li p{margin:0;font-size:14.5px;line-height:1.6}
  /* tabs (pricing, Smart Building) */
  .tabs-on>.tabbar{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;margin:0 0 14px;border:1.5px solid var(--ink);border-radius:var(--r);overflow:hidden;background:#fff}
  .tabbar button{font:inherit;font-weight:700;font-size:15px;line-height:1.2;min-height:44px;padding:4px 6px;background:transparent;color:var(--ink);border:0;border-left:1.5px solid var(--ink);cursor:pointer}
  .tabbar button:first-child{border-left:0}
  .tabbar button[aria-selected="true"]{background:var(--ink);color:#fff}
  .tabbar button:focus-visible{outline:3px solid var(--coral);outline-offset:-5px}
  .dark .tabs-on>.tabbar{border-color:rgba(255,255,255,.6);background:transparent}
  .dark .tabbar button{color:#fff;border-left-color:rgba(255,255,255,.6)}
  .dark .tabbar button[aria-selected="true"]{background:var(--coral);color:var(--ink)}
  .tiers{gap:0}
  .tier{padding:16px}
  .tier-head{flex-direction:row;align-items:center;gap:12px}
  .tier-head .ico-tile{--s:36;--eff:2;margin-left:-2px}
  .tier-price{margin:10px 0 4px}
  .tier-cap{margin-bottom:12px}
  .tier dl>div{padding:9px 0}
  .sb-grid{gap:0}
  .sb-col,.sb-col:first-child{display:grid;grid-template-columns:44px minmax(0,1fr);column-gap:16px;border-top:0;padding-top:0;align-items:start}
  .sb-col .ico-tile{--s:44;--eff:2.1;grid-row:1/3;margin:0 0 0 -3px}
  .sb-col h3{font-size:18px;margin:0 0 2px}
  .sb-sub{margin:0 0 12px;font-size:14px}
  .sb-list{grid-column:1/-1}
  .sb-list li{padding:10px 0}
  .sb-list b{font-size:15.5px}
  .sb-list span{font-size:14.5px;line-height:1.6}
  .sec.dark .sb-grid+.note,.sec.dark .tabs+.note{margin-top:20px}
  .sb-quote{margin-top:24px;padding:18px;gap:14px}
  .sb-quote p{font-size:15px}
  .sb-faq{margin-top:32px}
  .sb-faq .h-sub{margin-bottom:8px}

  /* FAQ accordion (questions only; answers open on tap) */
  .faq{grid-template-columns:1fr}
  details.qa{padding:0;border-top:1px solid var(--line)}
  details.qa>summary{cursor:pointer;padding:14px 36px 14px 0;min-height:48px;display:flex;align-items:center}
  details.qa>summary h3{margin:0;font-size:16.5px;line-height:1.4}
  details.qa>summary::after{content:"";position:absolute;right:6px;top:50%;width:9px;height:9px;margin-top:-7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);transition:transform .2s}
  details.qa[open]>summary::after{transform:rotate(-135deg);margin-top:-2px}
  details.qa>summary:focus-visible{outline:3px solid var(--coral);outline-offset:-2px}
  details.qa>p{padding:0 0 16px;font-size:15px;line-height:1.7}
  .sb-faq .qa:last-child,.faq details.qa:last-child{border-bottom:1px solid var(--line)}
  .sb-faq details.qa{border-top-color:rgba(255,255,255,.2)}
  .sb-faq details.qa:last-child{border-bottom-color:rgba(255,255,255,.2)}
  .faq+.cta-row{margin-top:20px}

  /* contact */
  .contact-hero{padding-top:22px;padding-bottom:36px}
  .contact-main h1{margin-bottom:8px}
  .contact-main .lead{margin-bottom:14px}
  .hints{margin:10px 0 16px;padding:12px 14px}
  .hints p,.hints li{font-size:14.5px}
  .hints p{margin-bottom:4px}
  .form .field{margin-bottom:14px}
  .form label{margin-bottom:6px}
  .contact-grid{gap:28px}
  .contact-card{padding:20px}
  .contact-card h2{margin-bottom:8px}
  .contact-list{margin-bottom:16px}
  .contact-list li{padding:10px 0;gap:14px}
  .contact-card hr{margin:18px 0}
  .contact-card .small{margin-bottom:12px}

  /* footer */
  .site-footer{padding:32px 0 24px}
  .foot-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px 20px}
  .foot-brand,.foot-ent{grid-column:1/-1}
  .foot-brand img{width:120px;margin-bottom:8px}
  .foot-brand p{font-size:16px;max-width:none;margin:0}
  .site-footer h2{margin-bottom:8px}
  .site-footer p,.site-footer li{line-height:1.7}
  .site-footer p{margin:0 0 8px}
  .copyright{margin-top:24px;padding-top:16px}
}
@media (max-width:768px){
  .foot-grid{grid-template-columns:1fr}
  .foot-links ul{display:flex;flex-wrap:wrap;gap:0 20px}
  .site-footer ul.foot-meta{display:flex;flex-wrap:wrap;gap:0 20px}
  .foot-contact{order:3}.foot-links{order:4}
}
@media (max-width:768px){
  .cmp-h{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 14px;padding:8px 0;font-size:12px;letter-spacing:.02em;align-items:end}
  .cmp-h span:first-child{display:none}
  .cmp-h .us{font-size:13px;padding-left:13px}
  .cmp-tag,.cmp-b .cmp-tag{display:none}
  .cmp-row:not(.cmp-h){padding:10px 0}
}
@media (max-width:768px){
  :root{--sec:44px}
  .hero{min-height:min(58svh,480px)}
  .cmp-row:not(.cmp-h){padding:9px 0}
  .flow li,.flow li:last-child{padding:13px 0}.flow li:first-child{padding-top:0}.flow li:last-child{padding-bottom:0}
  .tile{padding:12px 0}.tri .tile:first-child{padding-top:0}
  .sec-head{margin-bottom:18px}
}
@media (max-width:768px){
  body[data-lang="zh"] .phead h1,body[data-lang="zh"] .contact-main h1{word-break:keep-all;line-break:strict}
}
.site-footer .ico{stroke:#fff}
.site-footer .ico .acc{stroke:var(--coral)}

/* v15 strip tighten (mobile) */
@media (max-width:768px){
  .figs li,.figs li:first-child,.figs li:last-child{padding:11px 0}
  .figs .fig-d{font-size:14px;line-height:1.55}
}

/* demo: 4 results + field walk-through videos */
@media (min-width:769px){
  .results{grid-template-columns:repeat(4,minmax(0,1fr))}
  .result{padding:0 clamp(16px,2vw,32px)}
  .result:first-child{padding-left:0}
}
@media (min-width:769px) and (max-width:1100px){
  .results{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:48px}
  .result:nth-child(odd){border-left:0;padding-left:0}
  .result:nth-child(3),.result:nth-child(4){padding-top:0}
}
.vgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(32px,4vw,64px)}
.vcard .video-wrap{max-width:none}
.vcard h3{font-size:clamp(20px,1.9vw,24px);margin:24px 0 8px}
.vcard>p{font-size:15px;color:var(--grey);margin:0}
.vstats{list-style:none;margin:20px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;border-top:1px solid var(--line);padding-top:18px}
.vstats b{display:block;font-size:clamp(17px,1.5vw,20px);font-weight:800;letter-spacing:-.02em;line-height:1.2;color:var(--ink,#1a1a1a)}
.vstats b small{font-size:.62em;font-weight:700;letter-spacing:0}
.vstats span{display:block;font-size:12.5px;color:var(--grey);margin-top:6px;line-height:1.4}
.vstats .hl b{color:var(--coral)}
.vcard .vlen{font-size:13px;margin-top:14px}
@media (max-width:900px){.vgrid{grid-template-columns:1fr}}
@media (max-width:560px){.vstats{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:20px}}