/* GOYO EXPO — V1.0 prototype stylesheet */

:root{
  --c-primary:#FB6D24;
  --c-primary-dark:#D8551A;
  --c-primary-light:#FD9760;
  --c-secondary:#4F2E8D;
  --c-secondary-dark:#3B2169;
  --c-blue:#0C3DAF;
  --c-maroon:#8A5580;
  --c-dark:#1B1B1B;
  --c-gray:#5F6368;
  --c-gray-light:#8A8F98;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F7F2EA;
  --c-border:#E9E2D6;
  --font-main:-apple-system,BlinkMacSystemFont,"Helvetica Neue",Helvetica,Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  --maxw:1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-main);
  color:var(--c-dark);
  background:var(--c-bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0 0 .5em;font-weight:600;letter-spacing:-0.01em;}
p{margin:0 0 1em;color:var(--c-gray);}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--c-border);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:72px;}
.logo{display:flex;align-items:center;}
.logo-img{height:34px;width:auto;display:block;}
footer .logo-img{filter:brightness(0) invert(1);opacity:.65;}
nav.desktop-nav ul{display:flex;gap:32px;}
nav.desktop-nav a{font-size:14.5px;font-weight:500;color:var(--c-dark);opacity:.8;transition:opacity .15s;}
nav.desktop-nav a:hover,nav.desktop-nav a.active{opacity:1;color:var(--c-primary);}
.header-cta{
  background:var(--c-primary);color:#fff;padding:10px 20px;border-radius:100px;
  font-size:14px;font-weight:600;white-space:nowrap;
}
.header-cta:hover{background:var(--c-primary-dark);}
.nav-toggle{display:none;background:none;border:0;font-size:24px;cursor:pointer;}

.lang-toggle{
  background:none;border:1.5px solid var(--c-border);border-radius:100px;
  padding:8px 16px;font-size:13.5px;font-weight:600;color:var(--c-dark);cursor:pointer;
  font-family:inherit;white-space:nowrap;transition:border-color .15s,color .15s;
}
.lang-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* ---------- Bilingual content switching ---------- */
.lang-zh,.lang-zh-block{display:none;}
html.is-zh .lang-en,html.is-zh .lang-en-block{display:none;}
html.is-zh .lang-zh{display:inline;}
html.is-zh .lang-zh-block{display:block;}

nav.mobile-nav{
  display:none;position:fixed;top:72px;left:0;right:0;bottom:0;z-index:99;
  background:#fff;transform:translateY(-110%);transition:transform .25s ease;overflow-y:auto;
}
nav.mobile-nav.open{transform:translateY(0);}
nav.mobile-nav ul{display:flex;flex-direction:column;gap:0;padding:12px 24px;}
nav.mobile-nav a{display:block;padding:16px 0;border-bottom:1px solid var(--c-border);font-size:16px;font-weight:500;color:var(--c-dark);}
nav.mobile-nav a.active{color:var(--c-primary);}

@media (max-width:860px){
  nav.desktop-nav{display:none;}
  nav.mobile-nav{display:block;}
  .nav-toggle{display:block;}
  .header-cta{display:none;}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:86vh;display:flex;align-items:flex-end;
  background:#2A241C center/cover no-repeat;
}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(40,34,26,.12) 0%,rgba(24,20,15,.6) 100%);}
.hero-inner{position:relative;z-index:2;color:#fff;padding-bottom:72px;width:100%;}
.eyebrow{
  text-transform:uppercase;letter-spacing:.14em;font-size:12.5px;font-weight:600;
  color:#E4DFD6;margin-bottom:18px;display:block;
}
.hero h1{font-size:clamp(34px,6vw,64px);line-height:1.05;margin-bottom:18px;color:#fff;}
.hero p.lead{font-size:clamp(15px,2vw,19px);color:#F1ECE4;max-width:640px;margin-bottom:32px;}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;}
.btn{
  display:inline-block;padding:14px 28px;border-radius:100px;font-weight:600;font-size:14.5px;
  transition:all .15s ease;border:1.5px solid transparent;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-light);}
.btn-outline{border-color:rgba(255,255,255,.55);color:#fff;}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.08);}
.btn-dark{background:var(--c-secondary);color:#fff;}
.btn-dark:hover{background:var(--c-secondary-dark);}

/* ---------- Sections ---------- */
section{padding:96px 0;}
section.alt{background:var(--c-bg-alt);}
.section-head{max-width:640px;margin-bottom:56px;}
.section-head .eyebrow{color:var(--c-gray);}
.section-head h2{font-size:clamp(26px,4vw,38px);color:var(--c-dark);}
.section-head p{font-size:16px;}
.center{text-align:center;margin-left:auto;margin-right:auto;}

/* Services grid */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:48px;}
@media (max-width:860px){.grid-3,.grid-4,.grid-5{grid-template-columns:1fr 1fr;}.grid-2{grid-template-columns:1fr;}}
@media (max-width:560px){.grid-3,.grid-4,.grid-5{grid-template-columns:1fr;}}

.card{
  background:#fff;border:1px solid var(--c-border);border-radius:16px;padding:32px 28px;
}
.card .num{color:var(--c-gray-light);font-weight:700;font-size:13px;letter-spacing:.08em;margin-bottom:14px;display:block;}
.card h3{font-size:19px;color:var(--c-dark);}
.card p{font-size:14.5px;margin-bottom:0;}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center;}
.stats .stat h3{font-size:clamp(30px,4vw,46px);color:var(--c-dark);font-weight:600;margin-bottom:4px;}
.stats .stat p{font-size:13.5px;color:var(--c-gray);text-transform:uppercase;letter-spacing:.06em;margin:0;}
@media (max-width:700px){.stats{grid-template-columns:1fr 1fr;row-gap:36px;}}
.verify-note{font-size:12.5px;color:var(--c-gray-light);text-align:center;margin-top:18px;}

/* Process steps */
.process-list{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;}
.process-list.steps-9{grid-template-columns:repeat(3,1fr);}
.process-list .step{text-align:center;}
.process-list .step .n{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--c-border);color:var(--c-dark);
  display:flex;align-items:center;justify-content:center;font-weight:600;margin:0 auto 14px;font-size:15px;
}
.process-list .step p{font-size:13.5px;color:var(--c-dark);font-weight:600;margin:0;}
@media (max-width:860px){.process-list{grid-template-columns:repeat(3,1fr);row-gap:32px;}}
@media (max-width:560px){.process-list{grid-template-columns:repeat(2,1fr);}}

/* Portfolio grid */
.pf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
@media (max-width:960px){.pf-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.pf-grid{grid-template-columns:1fr;}}
.pf-card{position:relative;border-radius:14px;overflow:hidden;aspect-ratio:4/5;background:#111;}
.pf-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.pf-card:hover img{transform:scale(1.06);}
.pf-card .tag{
  position:absolute;top:16px;left:16px;color:#fff;
  font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
  text-shadow:0 1px 3px rgba(0,0,0,.5);
}
.pf-card .overlay{
  position:absolute;inset:auto 0 0 0;padding:20px;
  background:linear-gradient(0deg,rgba(0,0,0,.78) 0%,rgba(0,0,0,0) 75%);color:#fff;
}
.pf-card .overlay h3{font-size:16.5px;margin-bottom:4px;color:#fff;}
.pf-card .overlay p{font-size:12.5px;color:#DADAD8;margin:0;}
.filter-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:36px;}
.filter-row a{
  padding:8px 18px;border-radius:100px;border:1px solid var(--c-border);font-size:13.5px;font-weight:500;color:var(--c-gray);
}
.filter-row a.active,.filter-row a:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* Case detail */
.case-hero{position:relative;height:56vh;min-height:380px;background:#2A241C center/cover no-repeat;}
.case-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(40,34,26,.1),rgba(24,20,15,.58));}
.case-hero-inner{position:relative;z-index:2;color:#fff;height:100%;display:flex;flex-direction:column;justify-content:flex-end;padding-bottom:48px;}
.case-hero .eyebrow{color:#E4DFD6;}
.case-hero h1{font-size:clamp(28px,4.5vw,46px);color:#fff;margin-bottom:6px;}
.meta-row{display:flex;flex-wrap:wrap;gap:28px;margin-top:24px;padding-top:24px;border-top:1px solid var(--c-border);}
.meta-row div{min-width:120px;}
.meta-row .k{font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--c-gray-light);margin-bottom:4px;}
.meta-row .v{font-size:14.5px;font-weight:600;color:var(--c-dark);}
.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;margin-top:56px;}
@media (max-width:860px){.story-grid{grid-template-columns:1fr;}}
.story-block h4{color:var(--c-gray);font-size:13px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px;}
.story-block p{font-size:15px;color:var(--c-dark);}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:48px;}
@media (max-width:700px){.gallery{grid-template-columns:1fr 1fr;}}
.gallery img{border-radius:10px;aspect-ratio:4/3;object-fit:cover;width:100%;}
.flag-note{
  background:#FFF7E8;border:1px solid #F1DDAA;color:#7A5B10;border-radius:10px;padding:16px 20px;font-size:13.5px;margin-top:28px;
}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr;}}
.office{border-top:1px solid var(--c-border);padding:22px 0;}
.office h4{font-size:15px;margin-bottom:6px;}
.office p{font-size:14px;margin:0;}
form.inquiry{display:flex;flex-direction:column;gap:16px;}
form.inquiry label{font-size:13px;font-weight:600;color:var(--c-dark);margin-bottom:6px;display:block;}
form.inquiry input,form.inquiry textarea,form.inquiry select{
  width:100%;padding:12px 14px;border:1px solid var(--c-border);border-radius:8px;font-family:inherit;font-size:14.5px;background:#fff;
}
form.inquiry textarea{min-height:120px;resize:vertical;}
form.inquiry button{align-self:flex-start;border:0;cursor:pointer;}

/* CTA band */
.cta-band{background:var(--c-secondary);color:#fff;text-align:center;}
.cta-band h2{color:#fff;font-size:clamp(24px,4vw,36px);}
.cta-band p{color:#E9E5F4;max-width:560px;margin:0 auto 32px;}
.cta-band .btn{color:var(--c-secondary);}

/* Footer */
footer{background:var(--c-dark);color:#B9BCC2;padding:64px 0 32px;}
footer .grid-4{grid-template-columns:2fr 1fr 1fr 1fr;}
footer h4{color:#fff;font-size:13.5px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:18px;}
footer a{font-size:14px;color:#B9BCC2;line-height:2.1;}
footer a:hover{color:#fff;}
footer .foot-bottom{border-top:1px solid #2C2C2C;margin-top:48px;padding-top:24px;font-size:12.5px;color:#7C7F86;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;}
@media (max-width:860px){footer .grid-4{grid-template-columns:1fr 1fr;row-gap:32px;}}

/* Misc */
.tbc{color:#B8860B;font-weight:600;}
.industry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
@media (max-width:860px){.industry-grid{grid-template-columns:repeat(2,1fr);}}
.industry-card{border:1px solid var(--c-border);border-radius:14px;padding:26px 22px;background:#fff;}
.industry-card h3{font-size:16px;}
.about-values{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
@media (max-width:860px){.about-values{grid-template-columns:1fr;}}
.split-img{border-radius:16px;overflow:hidden;}
.split-img img{width:100%;height:100%;object-fit:cover;}