/* INBIS — light "steel & sky" theme (2nd design, 13/10/2026: owner rejected the black theme). */
@font-face{font-family:Archivo;src:url(/assets/fonts/archivo-latin.woff2) format('woff2');font-weight:100 900;font-stretch:62% 125%;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215}
@font-face{font-family:Archivo;src:url(/assets/fonts/archivo-latin-ext.woff2) format('woff2');font-weight:100 900;font-stretch:62% 125%;font-display:swap;unicode-range:U+0100-02AF,U+1E00-1EFF,U+20A0-20AB,U+20AD-20C0,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:Inter;src:url(/assets/fonts/inter-latin.woff2) format('woff2');font-weight:100 900;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215}
@font-face{font-family:Inter;src:url(/assets/fonts/inter-latin-ext.woff2) format('woff2');font-weight:100 900;font-display:swap;unicode-range:U+0100-02AF,U+1E00-1EFF,U+20A0-20AB,U+20AD-20C0,U+2C60-2C7F,U+A720-A7FF}
:root{--bg:#ffffff;--bg2:#f4f7fa;--tint:#eaf3f9;--card:#ffffff;--line:#dfe6ed;--ink:#0f2a44;--muted:#56677a;--blue:#0a7fb8;--sky:#2cb7ea;--warm:#e2701f;--navy:#0f2a44;
--sans:Inter,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;--disp:Archivo,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;--r:14px;--max:1180px;
--shadow:0 1px 2px rgba(15,42,68,.06),0 8px 24px -12px rgba(15,42,68,.18)}
*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.65 var(--sans);overflow-x:hidden}
a{color:inherit}img,svg{display:block;max-width:100%}
.wrap{width:min(var(--max),100% - 40px);margin-inline:auto}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;background:#fff;color:#000;padding:8px 12px;z-index:99}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:4px}
/* header in night blue so the steel logo reads (page body stays light) */
header{position:sticky;top:0;z-index:50;background:rgba(11,26,46,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid rgba(98,217,255,.25)}
.hd{display:flex;align-items:center;gap:24px;height:88px}
.brand{width:178px;flex:none}
.hd .lang{border-color:rgba(255,255,255,.2)}.hd .lang a{color:#c3d0dd}.hd .lang a[aria-current]{background:#fff;color:var(--navy)}
nav.main{display:flex;gap:26px;margin-left:auto;font:500 14.5px var(--sans)}
nav.main a{text-decoration:none;color:#c3d0dd;transition:color .2s}nav.main a:hover{color:#fff}
nav.main .lang{display:none}
.lang{display:flex;gap:2px;border:1px solid var(--line);border-radius:999px;padding:3px;font:600 12px var(--sans)}
.lang a{text-decoration:none;padding:5px 10px;border-radius:999px;color:var(--muted)}.lang a[aria-current]{background:var(--ink);color:#fff}
.btn{display:inline-flex;align-items:center;gap:10px;font:600 15px var(--sans);text-decoration:none;padding:13px 22px;border-radius:999px;border:1px solid transparent;cursor:pointer;transition:transform .2s,background .2s,box-shadow .2s}
.btn.pri{background:var(--blue);color:#fff}.btn.pri:hover{transform:translateY(-1px);background:#086c9d;box-shadow:0 10px 26px -10px rgba(10,127,184,.7)}
.btn.sec{border-color:var(--line);color:var(--ink);background:#fff}.btn.sec:hover{border-color:var(--blue);color:var(--blue)}
.hd .btn{padding:10px 18px;font-size:14px}
.menu-t{display:none;margin-left:auto;background:transparent;border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:10px;width:42px;height:42px}
/* hero */
.hero{position:relative;padding:72px 0 90px;overflow:hidden;background:linear-gradient(180deg,#f2f8fc 0%,#fff 100%)}
.hero:before{content:"";position:absolute;inset:-30% -15% auto auto;width:820px;height:820px;background:radial-gradient(closest-side,rgba(44,183,234,.20),transparent);pointer-events:none}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font:600 12.5px var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--blue)}
.eyebrow:before{content:"";width:28px;height:2px;background:currentColor}
h1,h2,h3{font-family:var(--disp);letter-spacing:-.02em;line-height:1.08;margin:0}
h1{font-size:clamp(40px,5.6vw,72px);font-weight:800;margin:18px 0 22px}
h1 span{background:linear-gradient(90deg,var(--blue),var(--sky));-webkit-background-clip:text;background-clip:text;color:transparent}
:lang(zh-Hans) h1,:lang(zh-Hans) h2{letter-spacing:0;line-height:1.25}
.lead{font-size:clamp(17px,1.5vw,19px);color:var(--muted);max-width:58ch;margin:0 0 32px}
.ctas{display:flex;flex-wrap:wrap;gap:12px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:34px;padding:0;list-style:none}
.chips li{font:500 13px var(--sans);color:var(--ink);background:#fff;border:1px solid var(--line);padding:6px 12px;border-radius:999px}
.hero-art{width:100%;height:auto;color:var(--blue)}
.hero-art .bld{fill:none;stroke:var(--navy);stroke-width:1.6}
.hero-art .win{stroke:var(--blue);fill:rgba(44,183,234,.10);stroke-width:1.1;opacity:0;animation:win .6s ease forwards;animation-delay:var(--d)}
.hero-art .slab{opacity:.35}.hero-art .ground{stroke:var(--muted);stroke-width:1;opacity:.5}
.hero-art .steelf{fill:none;stroke:var(--blue);stroke-width:2.4}.hero-art .brace{stroke:var(--sky);stroke-width:1.4;fill:none}
.hero-art .pipe{fill:none;stroke-width:2.2;stroke-dasharray:900;stroke-dashoffset:900;animation:draw 2.8s 1s ease forwards}
.hero-art .hot{stroke:var(--warm)}.hero-art .cold{stroke:var(--sky)}
.hero-art .dim{stroke:var(--muted);fill:var(--muted);font:500 11px var(--sans);text-anchor:middle;opacity:.8}
@keyframes win{to{opacity:1}}@keyframes draw{to{stroke-dashoffset:0}}
/* sections */
section{padding:96px 0}
section.alt{background:var(--bg2)}section.tint{background:var(--tint)}
.kick{font:600 12.5px var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--blue);margin-bottom:14px}
h2{font-size:clamp(30px,3.6vw,46px);font-weight:800;max-width:22ch}
.sub{color:var(--muted);max-width:62ch;margin:18px 0 0}
.sectors{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:48px}
.sector{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:32px;box-shadow:var(--shadow);overflow:hidden}
.sector:before{content:"";position:absolute;inset:0 0 auto;height:4px;background:linear-gradient(90deg,var(--blue),var(--sky))}
.sector .tag{font:600 12px var(--sans);color:var(--warm);letter-spacing:.08em;text-transform:uppercase}
.sector h3{font-size:clamp(22px,2.2vw,27px);margin:10px 0 14px}
.sector p{color:var(--muted);margin:0 0 20px;font-size:16px}
.sector ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.sector li{display:flex;gap:10px;align-items:flex-start;font-size:15px}
.sector li .ic{width:18px;height:18px;color:var(--blue);flex:none;margin-top:4px}
.services{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin-top:48px}
.srv{background:#fff;padding:26px 24px;transition:background .25s}
.srv:hover{background:var(--tint)}
.srv .ic{width:30px;height:30px;color:var(--blue);margin-bottom:16px}
.srv h3,.innc h3,.steps h3,.why h3{font-family:var(--sans);font-weight:650;letter-spacing:0}
.srv h3{font-size:17px;margin-bottom:6px}
.srv p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.55}
.inn{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
.innc{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--shadow)}
.innc .ic{width:34px;height:34px;color:var(--blue);margin-bottom:14px}
.innc h3{font-size:18px;margin-bottom:8px}.innc p{margin:0;color:var(--muted);font-size:15px}
.innc.hl{background:linear-gradient(140deg,var(--blue),#0b5f8c);color:#fff;border-color:transparent}
.innc.hl .ic{color:#fff}.innc.hl p{color:rgba(255,255,255,.88)}
.steps{list-style:none;padding:0;margin:48px 0 0;display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:s}
.steps li{counter-increment:s;position:relative;padding-top:58px}
.steps li:before{content:"0" counter(s);position:absolute;top:0;left:0;font:800 34px var(--disp);color:var(--blue)}
.steps li:after{content:"";position:absolute;top:22px;left:60px;right:-10px;height:2px;background:linear-gradient(90deg,var(--sky),transparent)}
.steps li:last-child:after{display:none}
.steps h3{font-size:18px;margin-bottom:6px}
.steps p{margin:0;color:var(--muted);font-size:14.5px}
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:48px}
.why div{border-left:3px solid var(--blue);padding:4px 0 4px 18px}
.why h3{font-size:18px;margin-bottom:8px}
.why p{margin:0;color:var(--muted);font-size:15px}
.team{display:grid;grid-template-columns:repeat(2,minmax(0,380px));gap:18px;margin-top:40px}
.person{display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow)}
.av{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;font:800 20px var(--disp);color:#fff;background:linear-gradient(140deg,var(--blue),var(--navy));flex:none}
.person b{display:block;font-size:17.5px}.person span{color:var(--muted);font-size:14.5px}
.contact .wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px}
.cinfo{margin-top:30px;display:grid;gap:14px}
.cinfo a{display:flex;gap:12px;align-items:center;text-decoration:none;font-weight:500}
.cinfo .ic{width:20px;height:20px;color:var(--blue)}
form{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px;display:grid;grid-template-columns:1fr 1fr;gap:16px;box-shadow:var(--shadow)}
label{display:grid;gap:6px;font:500 13.5px var(--sans);color:var(--muted)}
label.full{grid-column:1/-1}
input,select,textarea{font:inherit;font-size:16px;color:var(--ink);background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;width:100%}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px rgba(10,127,184,.15)}
textarea{min-height:120px;resize:vertical}
form .btn{justify-self:start}form small{grid-column:1/-1;color:var(--muted);font-size:12.5px}
footer{background:#0b1a2e;color:#b8c6d4;padding:48px 0 54px;font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between}
footer .brand{width:170px}footer .lang{border-color:rgba(255,255,255,.2)}footer .lang a{color:#b8c6d4}footer .lang a[aria-current]{background:#fff;color:var(--navy)}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}.reveal.in{opacity:1;transform:none}
@media (max-width:1020px){.services{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:1fr 1fr}.steps li:after{display:none}.why,.inn{grid-template-columns:1fr 1fr}.sectors{grid-template-columns:1fr}nav.main{gap:18px}}
@media (max-width:860px){
 .menu-t{display:grid;place-items:center}.hd .btn,.hd>.lang{display:none}
 nav.main{display:none;position:absolute;top:88px;left:0;right:0;flex-direction:column;gap:0;background:#0b1a2e;border-bottom:1px solid rgba(98,217,255,.25);padding:8px 20px 20px;box-shadow:var(--shadow)}
 nav.main.open{display:flex}nav.main a{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.1);font-size:16px}
 nav.main .lang{display:flex;margin-top:14px;align-self:flex-start}nav.main .lang a{border:0;padding:6px 12px}
 .hero{padding:40px 0 64px}.hero .wrap,.contact .wrap{grid-template-columns:1fr}.hero-art{max-width:520px;margin:0 auto}
 section{padding:70px 0}.team{grid-template-columns:1fr}form{grid-template-columns:1fr;padding:22px}
}
@media (max-width:520px){.wrap{width:calc(100% - 32px)}.services,.steps,.why,.inn{grid-template-columns:1fr}.sector{padding:24px}.brand{width:128px}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.hero-art .win{opacity:1}.hero-art .pipe{stroke-dashoffset:0}.reveal{opacity:1;transform:none}}