/* ==========================================================================
   IMOT (Shanghai) Technology Co., Ltd. — Site Stylesheet
   Palette: Deep Navy + Gold
   ========================================================================== */

:root{
  --navy-950:#060f22;
  --navy-900:#0a1a35;
  --navy-800:#0f2344;
  --navy-700:#173458;
  --navy-600:#22456e;
  --navy-500:#2f5a86;

  --gold-600:#a97e1f;
  --gold-500:#c9a227;
  --gold-400:#d9b84a;
  --gold-300:#e7cd7c;
  --gold-100:#f7ecd0;

  --ink:#12192b;
  --slate-700:#3c4658;
  --slate-500:#647089;
  --slate-300:#a2acc0;
  --line:#e3e7ef;
  --paper:#f7f8fb;
  --white:#ffffff;

  --serif: "Playfair Display", "Songti SC", Georgia, serif;
  --sans: "Inter", "PingFang SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;

  --container: 1200px;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-md: 0 12px 32px -12px rgba(6,15,34,.18);
  --shadow-lg: 0 24px 60px -20px rgba(6,15,34,.28);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

h1,h2,h3,h4{
  font-family:var(--serif);
  font-weight:700;
  line-height:1.15;
  margin:0 0 .5em;
  color:var(--navy-950);
  letter-spacing:.2px;
}
h1{font-size:clamp(2.4rem,4.2vw,3.6rem)}
h2{font-size:clamp(1.9rem,3vw,2.6rem)}
h3{font-size:1.4rem}
p{margin:0 0 1em}
.lede{font-size:1.15rem;color:var(--slate-700)}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--sans);
  font-weight:700;
  font-size:.78rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--gold-600);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:28px;height:2px;background:var(--gold-500);display:inline-block;
}
.on-dark .eyebrow{color:var(--gold-300)}
.on-dark h1,.on-dark h2,.on-dark h3,.on-dark p{color:var(--white)}
.on-dark .lede{color:var(--slate-300)}

/* Dark-background section shells: headings must render light, not the default near-black ink */
.hero h1,.hero h2,.hero h3,.hero h4,
.page-hero h1,.page-hero h2,.page-hero h3,.page-hero h4,
.article-hero h1,.article-hero h2,.article-hero h3,.article-hero h4,
.section-navy h1,.section-navy h2,.section-navy h3,.section-navy h4,
.pillar h1,.pillar h2,.pillar h3,.pillar h4,
.cta-banner h1,.cta-banner h2,.cta-banner h3,.cta-banner h4{color:var(--white)}
.hero p,.page-hero p,.article-hero p,.section-navy p,.pillar p,.cta-banner p{color:var(--slate-300)}

/* ---------------- Buttons ---------------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:999px;
  font-weight:600;
  font-size:.95rem;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:all .2s ease;
  white-space:nowrap;
}
.btn-gold{
  background:linear-gradient(135deg,var(--gold-400),var(--gold-600));
  color:var(--navy-950);
  box-shadow:0 10px 24px -8px rgba(201,162,39,.55);
}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 16px 30px -8px rgba(201,162,39,.6)}
.btn-outline{
  border-color:rgba(255,255,255,.4);
  color:var(--white);
  background:transparent;
}
.btn-outline:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn-navy{
  background:var(--navy-900);
  color:#fff;
}
.btn-navy:hover{background:var(--navy-800);transform:translateY(-2px)}
.btn-ghost{
  color:var(--navy-900);
  border-color:var(--line);
  background:#fff;
}
.btn-ghost:hover{border-color:var(--navy-500)}
.btn-sm{padding:9px 18px;font-size:.85rem}

/* ---------------- Header / Nav ---------------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 32px;
  max-width:var(--container);
  margin:0 auto;
}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:700;font-size:1.4rem;color:var(--navy-950)}
.brand .mark{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,var(--navy-800),var(--navy-950));
  display:flex;align-items:center;justify-content:center;
  color:var(--gold-400);font-family:var(--serif);font-weight:700;font-size:1.1rem;
  box-shadow:inset 0 0 0 1px rgba(201,162,39,.4);
}
.brand small{display:block;font-family:var(--sans);font-weight:500;font-size:.62rem;letter-spacing:.08em;color:var(--slate-500);text-transform:uppercase}
.brand-logo{height:34px;width:auto;display:block}
.footer-brand .brand-logo{height:30px;background:#fff;padding:8px 14px;border-radius:10px}

.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{
  font-size:.95rem;font-weight:500;color:var(--slate-700);
  position:relative;padding:6px 0;
}
.nav-links a:hover{color:var(--navy-950)}
.nav-links a.active{color:var(--navy-950);font-weight:700}
.nav-links a.active::after{
  content:"";position:absolute;left:0;bottom:-2px;width:100%;height:2px;background:var(--gold-500);
}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:4px}
.nav-toggle span{display:block;width:26px;height:2px;background:var(--navy-950);margin:5px 0;transition:.2s}

@media (max-width: 960px){
  .nav-links{
    position:fixed;top:73px;left:0;right:0;bottom:0;
    background:var(--white);
    flex-direction:column;align-items:flex-start;
    padding:28px 32px;gap:22px;
    transform:translateX(100%);
    transition:transform .28s ease;
    overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-toggle{display:block}
  .nav-cta .btn-sm-hide{display:none}
}

/* ---------------- Hero (geometric pattern) ---------------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,var(--navy-950) 0%,var(--navy-800) 60%,var(--navy-700) 100%);
  color:#fff;
  padding:96px 0 88px;
}
.hero-pattern{
  position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:
    repeating-linear-gradient(115deg, transparent 0 64px, rgba(201,162,39,.08) 64px 68px),
    radial-gradient(circle at 82% 20%, rgba(201,162,39,.25), transparent 45%),
    radial-gradient(circle at 100% 90%, rgba(47,90,134,.35), transparent 50%);
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;
}
.hero h1{color:#fff}
.hero-visual{
  position:relative;border-radius:20px;overflow:hidden;
  box-shadow:var(--shadow-lg);
  border:1px solid rgba(201,162,39,.3);
  aspect-ratio:4/3.1;
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg, rgba(6,15,34,0) 40%, rgba(6,15,34,.55));
}
.hero-badge{
  position:absolute;left:20px;bottom:20px;z-index:2;
  background:rgba(6,15,34,.72);backdrop-filter:blur(6px);
  border:1px solid rgba(201,162,39,.4);
  padding:12px 16px;border-radius:12px;
  font-size:.82rem;color:var(--gold-200,#f7ecd0);
  display:flex;gap:10px;align-items:center;
}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .hero{padding:56px 0 64px}
}

.stat-row{display:flex;gap:44px;flex-wrap:wrap;margin-top:36px}
.stat-row .stat b{display:block;font-family:var(--serif);font-size:2rem;color:var(--gold-300)}
.stat-row .stat span{font-size:.85rem;color:var(--slate-300)}

/* ---------------- Section shells ---------------- */
section{padding:88px 0}
.section-alt{background:var(--paper)}
.section-navy{background:var(--navy-950);color:#fff}
.section-head{max-width:720px;margin:0 auto 56px;text-align:center}
.section-head.left{margin:0 0 48px;text-align:left}

/* ---------------- Cards ---------------- */
.grid{display:grid;gap:28px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:960px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:32px;transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:transparent}
.card .icon{
  width:52px;height:52px;border-radius:12px;
  background:linear-gradient(135deg,var(--navy-900),var(--navy-700));
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;
  color:var(--gold-400);
}
.card h3{margin-bottom:10px;font-size:1.2rem}
.card p{color:var(--slate-700);font-size:.96rem;margin-bottom:0}
.card .tag{
  display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--gold-600);margin-bottom:12px;
}

.pillar{
  background:var(--navy-950);color:#fff;border-radius:20px;overflow:hidden;
  display:grid;grid-template-columns:1fr 1fr;align-items:stretch;
  box-shadow:var(--shadow-lg);
}
.pillar .pillar-media{position:relative;min-height:280px}
.pillar .pillar-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.pillar .pillar-body{padding:48px}
.pillar.reverse{grid-template-columns:1fr 1fr}
.pillar.reverse .pillar-media{order:2}
@media (max-width:900px){
  .pillar,.pillar.reverse{grid-template-columns:1fr}
  .pillar.reverse .pillar-media{order:0}
  .pillar .pillar-media{min-height:220px}
  .pillar .pillar-body{padding:36px 28px}
}

/* ---------------- Feature list ---------------- */
.check-list li{
  display:flex;gap:12px;padding:10px 0;color:var(--slate-700);
  border-bottom:1px solid var(--line);
}
.check-list li:last-child{border-bottom:none}
.check-list .dot{
  flex:none;width:22px;height:22px;border-radius:50%;
  background:var(--gold-100);color:var(--gold-600);
  display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;
  margin-top:2px;
}

/* ---------------- Workflow / Timeline (HF Workspace) ---------------- */
.workflow{display:flex;gap:0;align-items:stretch;overflow-x:auto;padding-bottom:8px}
.workflow-step{
  flex:1;min-width:180px;position:relative;padding:28px 22px;
  border:1px solid var(--line);background:#fff;
}
.workflow-step:not(:last-child)::after{
  content:"";position:absolute;right:-1px;top:50%;transform:translateY(-50%);
  width:10px;height:10px;border-radius:50%;background:var(--gold-500);
  box-shadow:0 0 0 6px #fff, 0 0 0 7px var(--line);
  z-index:2;
}
.workflow-step .num{
  font-family:var(--serif);color:var(--gold-600);font-size:1.4rem;margin-bottom:10px;display:block;
}
.workflow-step h4{font-size:1rem;margin-bottom:6px;color:var(--navy-950)}
.workflow-step p{font-size:.85rem;color:var(--slate-500);margin:0}

/* ---------------- Table (traceability) ---------------- */
.trace-table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md)}
.trace-table th{
  background:var(--navy-950);color:var(--gold-300);text-align:left;
  padding:14px 18px;font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;font-weight:700;
}
.trace-table td{padding:14px 18px;border-bottom:1px solid var(--line);font-size:.9rem;color:var(--slate-700)}
.trace-table tr:last-child td{border-bottom:none}
.badge{
  display:inline-block;padding:3px 10px;border-radius:999px;font-size:.72rem;font-weight:700;
}
.badge-live{background:#e6f4ea;color:#1e7a34}
.badge-review{background:var(--gold-100);color:var(--gold-600)}
.badge-draft{background:#eef1f6;color:var(--slate-500)}

/* ---------------- Mock UI (HF Workspace screenshot) ---------------- */
.mockui{
  background:var(--navy-950);border-radius:18px;padding:0;overflow:hidden;
  box-shadow:var(--shadow-lg); border:1px solid rgba(201,162,39,.25);
}
.mockui-bar{display:flex;align-items:center;gap:8px;padding:14px 18px;background:var(--navy-900);border-bottom:1px solid rgba(255,255,255,.06)}
.mockui-bar span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.2)}
.mockui-bar span:nth-child(1){background:#e6675a}
.mockui-bar span:nth-child(2){background:#e8b84a}
.mockui-bar span:nth-child(3){background:#4caf6f}
.mockui-body{display:grid;grid-template-columns:190px 1fr;min-height:340px}
.mockui-side{background:var(--navy-900);padding:20px 14px;border-right:1px solid rgba(255,255,255,.06)}
.mockui-side .mi{
  padding:10px 12px;border-radius:8px;font-size:.82rem;color:var(--slate-300);margin-bottom:4px;
}
.mockui-side .mi.active{background:rgba(201,162,39,.16);color:var(--gold-300);font-weight:600}
.mockui-main{padding:24px}
.mockui-main h4{color:#fff;font-size:1rem;margin-bottom:16px;font-family:var(--sans);font-weight:700}
.mockui-row{display:flex;align-items:center;gap:14px;padding:12px 14px;background:rgba(255,255,255,.04);border-radius:10px;margin-bottom:10px}
.mockui-row .bar{height:8px;border-radius:4px;background:linear-gradient(90deg,var(--gold-500),var(--gold-300))}
.mockui-row span{font-size:.78rem;color:var(--slate-300);flex:none}

/* ---------------- Insights / Article cards ---------------- */
.article-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s}
.article-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.article-card .thumb{aspect-ratio:16/10;overflow:hidden}
.article-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.article-card:hover .thumb img{transform:scale(1.06)}
.article-card .body{padding:24px}
.article-meta{display:flex;gap:12px;align-items:center;font-size:.78rem;color:var(--slate-500);margin-bottom:10px;text-transform:uppercase;letter-spacing:.04em}
.article-meta .cat{color:var(--gold-600);font-weight:700}
.article-card h3{font-size:1.1rem;margin-bottom:10px}
.article-card p{color:var(--slate-700);font-size:.92rem}

.article-hero{background:var(--navy-950);color:#fff;padding:72px 0 48px}
.article-body{max-width:760px;margin:0 auto;padding:64px 32px}
.article-body h2{margin-top:1.6em}
.article-body h3{margin-top:1.4em}
.article-body p{color:var(--slate-700);font-size:1.05rem}
.article-body ul{margin:0 0 1.2em;padding-left:1.2em;list-style:disc;color:var(--slate-700)}
.article-body li{margin-bottom:.4em}
.article-body blockquote{
  margin:2em 0;padding:20px 26px;border-left:3px solid var(--gold-500);
  background:var(--paper);font-family:var(--serif);font-style:italic;font-size:1.1rem;color:var(--navy-900);
}

/* ---------------- Team ---------------- */
.person{text-align:center}
.person .avatar{border-radius:16px;overflow:hidden;aspect-ratio:1/1.05;margin-bottom:16px}
.person .avatar img{width:100%;height:100%;object-fit:cover}
.person h4{margin:0 0 2px;font-family:var(--sans);font-size:1rem;color:var(--navy-950)}
.person span{font-size:.82rem;color:var(--gold-600);font-weight:600}

/* ---------------- Logos strip ---------------- */
.marquee{display:flex;gap:48px;flex-wrap:wrap;align-items:center;justify-content:center;opacity:.75}
.marquee span{font-family:var(--serif);font-weight:700;font-size:1.1rem;color:var(--slate-500);letter-spacing:.03em}

/* ---------------- CTA banner ---------------- */
.cta-banner{
  background:linear-gradient(120deg,var(--navy-950),var(--navy-800));
  border-radius:24px;padding:64px;text-align:center;color:#fff;position:relative;overflow:hidden;
}
.cta-banner::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 15% 20%, rgba(201,162,39,.25), transparent 40%),
             radial-gradient(circle at 85% 85%, rgba(47,90,134,.4), transparent 45%);
}
.cta-banner *{position:relative;z-index:1}
.cta-banner h2{color:#fff}
.cta-actions{display:flex;gap:16px;justify-content:center;margin-top:28px;flex-wrap:wrap}

/* ---------------- Form ---------------- */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow-md)}
.field{margin-bottom:20px}
.field label{display:block;font-size:.85rem;font-weight:600;color:var(--navy-950);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 16px;border:1.5px solid var(--line);border-radius:var(--radius-sm);
  font-family:inherit;font-size:.95rem;color:var(--ink);background:var(--paper);
  transition:border-color .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--gold-500);background:#fff}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:640px){.field-row{grid-template-columns:1fr}}

/* ---------------- Footer ---------------- */
.site-footer{background:var(--navy-950);color:var(--slate-300);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:32px;margin-bottom:48px}
.footer-grid h5{color:#fff;font-size:.85rem;letter-spacing:.04em;margin-bottom:18px;font-family:var(--sans)}
.footer-grid li{margin-bottom:10px;font-size:.88rem}
.footer-grid a:hover{color:var(--gold-300)}
.footer-brand .brand{color:#fff}
.footer-brand p{font-size:.88rem;color:var(--slate-300);margin:16px 0 20px;max-width:280px}
.footer-social{display:flex;gap:10px}
.footer-social a{
  width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,.2);
  display:flex;align-items:center;justify-content:center;font-size:.8rem;
}
.footer-social a:hover{background:var(--gold-500);border-color:var(--gold-500);color:var(--navy-950)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding-top:24px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.8rem;color:var(--slate-500);
}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr}
}

/* ---------------- Breadcrumb / page hero (inner pages) ---------------- */
.page-hero{
  background:linear-gradient(120deg,var(--navy-950),var(--navy-800));
  color:#fff;padding:76px 0 68px;position:relative;overflow:hidden;
}
.page-hero .hero-pattern{opacity:.4}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{font-size:.82rem;color:var(--slate-300);margin-bottom:18px}
.breadcrumb a:hover{color:var(--gold-300)}

/* ---------------- misc ---------------- */
.divider{height:1px;background:var(--line);margin:64px 0}
.center{text-align:center}
.mt-0{margin-top:0}
.max-w{max-width:640px;margin:0 auto}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
@media (max-width:900px){.two-col{grid-template-columns:1fr}}
.img-frame{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md)}
.tag-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}
.tag-pill{
  padding:6px 14px;border-radius:999px;background:var(--gold-100);color:var(--gold-600);
  font-size:.78rem;font-weight:700;
}