/* =========================================================
   SY Engineering Process (SYE)
   Theme: Molten Copper & Graphite — Industrial Precision
   ========================================================= */

:root {
  --graphite:    #1b1d22;
  --graphite-2:  #24262d;
  --graphite-3:  #2e313a;
  --copper:      #e8763a;
  --copper-2:    #f4944f;
  --copper-deep: #c4561d;
  --steel:       #4f93b8;
  --steel-deep:  #2f6f93;
  --ink:         #20232a;
  --muted:       #6a7280;
  --line:        #e7e2db;
  --cream:       #f8f5f0;
  --cream-2:     #f1ece3;
  --card:        #ffffff;
  --white:       #ffffff;
  --radius:      16px;
  --shadow-sm:   0 4px 16px rgba(27, 29, 34, .06);
  --shadow-md:   0 16px 44px rgba(27, 29, 34, .13);
  --shadow-lg:   0 28px 76px rgba(27, 29, 34, .22);
  --max:         1180px;
  --ease:        cubic-bezier(.16, .84, .44, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "Plus Jakarta Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; height: auto; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 22px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 700; font-size: .94rem;
  padding: 14px 28px; border-radius: 10px;
  cursor: pointer; border: none;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--copper-2), var(--copper-deep));
  color: #fff;
  box-shadow: 0 12px 28px rgba(196, 86, 29, .38);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 38px rgba(196, 86, 29, .5); }
.btn-ghost { background: rgba(255,255,255,.08); color: #fff; border: 1px solid rgba(255,255,255,.28); }
.btn-ghost:hover { background: rgba(255,255,255,.16); transform: translateY(-3px); }
.btn-dark { background: var(--graphite); color: #fff; }
.btn-dark:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

/* ---------- Section headings ---------- */
.section { padding: 94px 0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .76rem; font-weight: 800;
  letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--copper-deep);
  margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--copper); display: inline-block; }
.eyebrow.center { justify-content: center; }
.section-title {
  font-size: clamp(1.85rem, 4vw, 2.8rem);
  font-weight: 800; letter-spacing: -.6px;
  color: var(--graphite); line-height: 1.13;
}
.section-head { text-align: center; max-width: 660px; margin: 0 auto 58px; }
.section-head p { color: var(--muted); margin-top: 15px; }

/* =========================================================
   HEADER / NAV
   ========================================================= */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  transition: background .35s, box-shadow .35s, padding .35s;
  padding: 18px 0;
}
.site-header.scrolled {
  background: rgba(27, 29, 34, .94);
  backdrop-filter: blur(14px);
  box-shadow: 0 8px 30px rgba(0,0,0,.3);
  padding: 11px 0;
}
.nav { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 13px; color: #fff; }
.brand-mark {
  width: 48px; height: 48px; border-radius: 12px;
  background: linear-gradient(135deg, var(--copper-2), var(--copper-deep));
  display: grid; place-items: center;
  font-weight: 800; font-size: 1.15rem; color: #fff;
  box-shadow: 0 10px 22px rgba(196, 86, 29, .45);
  flex-shrink: 0; letter-spacing: .5px;
}
.brand-text strong { display: block; font-size: 1.1rem; font-weight: 800; line-height: 1.1; }
.brand-text span { font-size: .68rem; letter-spacing: 1.4px; text-transform: uppercase; opacity: .72; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  color: rgba(255,255,255,.85); font-weight: 600; font-size: .92rem;
  padding: 9px 14px; border-radius: 9px;
  transition: color .25s, background .25s;
}
.nav-links a:hover { color: #fff; background: rgba(255,255,255,.1); }
.nav-cta { margin-left: 8px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 26px; height: 2.5px; background: #fff; border-radius: 3px; transition: transform .3s, opacity .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  background:
    radial-gradient(1000px 560px at 82% 0%, rgba(232,118,58,.22), transparent 58%),
    radial-gradient(800px 460px at 0% 100%, rgba(79,147,184,.16), transparent 55%),
    linear-gradient(155deg, var(--graphite) 0%, #15171b 100%);
  color: #fff; overflow: hidden;
  padding: 132px 0 80px;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(45deg, rgba(255,255,255,.03) 0 2px, transparent 2px 22px);
  pointer-events: none;
}
.hero-grid {
  position: relative; display: grid;
  grid-template-columns: 1.05fr .95fr; gap: 52px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.16);
  padding: 8px 17px; border-radius: 50px;
  font-size: .82rem; font-weight: 600; margin-bottom: 24px;
}
.hero-badge .cn { color: var(--copper-2); font-weight: 800; }
.hero h1 {
  font-size: clamp(2.3rem, 5.4vw, 4rem);
  font-weight: 800; line-height: 1.06; letter-spacing: -1px; margin-bottom: 22px;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--copper-2), var(--steel));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p.lead { font-size: 1.08rem; color: rgba(255,255,255,.82); max-width: 540px; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-stats { display: flex; gap: 36px; margin-top: 48px; padding-top: 30px; border-top: 1px solid rgba(255,255,255,.12); }
.hero-stats .num { font-size: 1.9rem; font-weight: 800; color: var(--copper-2); }
.hero-stats .lbl { font-size: .8rem; color: rgba(255,255,255,.7); }

.hero-visual { position: relative; }
.hero-card {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.13);
  border-radius: 22px; padding: 26px; backdrop-filter: blur(8px); box-shadow: var(--shadow-lg);
}
.hero-card-img {
  width: 100%; aspect-ratio: 4/3; border-radius: 14px;
  background:
    radial-gradient(circle at 30% 30%, rgba(232,118,58,.5), transparent 60%),
    radial-gradient(circle at 75% 70%, rgba(79,147,184,.4), transparent 55%),
    linear-gradient(135deg, #2b2e36, var(--graphite));
  display: grid; place-items: center; overflow: hidden;
}
.hero-card-img svg { width: 46%; opacity: .92; }
.hero-letters { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 22px; }
.hero-letters div {
  text-align: center; padding: 14px 8px; border-radius: 12px;
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12);
}
.hero-letters .l { font-size: 1.5rem; font-weight: 800; color: var(--copper-2); }
.hero-letters .t { font-size: .72rem; color: rgba(255,255,255,.72); margin-top: 2px; }

/* =========================================================
   SYE MEANING / VALUES
   ========================================================= */
#meaning { background: var(--cream); }
.meaning-intro { max-width: 760px; margin: 0 auto 50px; text-align: center; }
.meaning-intro .cn { font-size: 1.3rem; font-weight: 800; color: var(--copper-deep); }
.meaning-intro p { color: var(--muted); margin-top: 14px; }
.sye-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.sye-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 28px; position: relative; overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s;
}
.sye-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.sye-letter {
  font-size: 3.4rem; font-weight: 800; line-height: 1;
  background: linear-gradient(135deg, var(--copper), var(--copper-deep));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
}
.sye-card h3 { font-size: 1.18rem; font-weight: 800; color: var(--graphite); margin-bottom: 12px; }
.sye-card p { font-size: .93rem; color: var(--muted); }
.sye-card .corner { position: absolute; top: -20px; right: -20px; width: 90px; height: 90px; border-radius: 50%; background: rgba(232,118,58,.07); }

/* =========================================================
   WHY CHOOSE
   ========================================================= */
#why { background: var(--graphite); color: #fff; position: relative; overflow: hidden; }
#why::before { content: ""; position: absolute; inset: 0; background: radial-gradient(700px 400px at 90% 10%, rgba(232,118,58,.15), transparent 60%); }
#why .container { position: relative; }
#why .section-title { color: #fff; }
#why .section-head p { color: rgba(255,255,255,.75); }
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 22px; }
.why-card {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius); padding: 30px 26px;
  transition: transform .35s var(--ease), background .35s, border-color .35s;
}
.why-card:hover { transform: translateY(-8px); background: rgba(255,255,255,.09); border-color: rgba(232,118,58,.5); }
.why-icon {
  width: 54px; height: 54px; border-radius: 13px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--copper), var(--copper-deep));
  margin-bottom: 18px; box-shadow: 0 10px 22px rgba(196,86,29,.4);
}
.why-icon svg { width: 27px; height: 27px; stroke: #fff; }
.why-card h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 10px; }
.why-card p { font-size: .91rem; color: rgba(255,255,255,.72); }
.why-tagline { text-align: center; margin-top: 50px; }
.why-tagline h4 { font-size: clamp(1.3rem, 2.6vw, 1.8rem); font-weight: 800; color: var(--copper-2); }

/* =========================================================
   ABOUT
   ========================================================= */
#about { background: var(--cream); }
.about-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 60px; align-items: center; }
.about-visual { position: relative; }
.about-img {
  width: 100%; aspect-ratio: 4/3; border-radius: var(--radius);
  background:
    radial-gradient(circle at 25% 20%, rgba(232,118,58,.32), transparent 55%),
    radial-gradient(circle at 80% 80%, rgba(79,147,184,.28), transparent 55%),
    linear-gradient(140deg, var(--graphite-2), var(--graphite));
  display: grid; place-items: center; box-shadow: var(--shadow-md); overflow: hidden;
}
.about-img svg { width: 42%; opacity: .92; }
.about-badge {
  position: absolute; bottom: -22px; right: -22px;
  background: var(--white); border-radius: 14px; padding: 18px 22px;
  box-shadow: var(--shadow-md); display: flex; align-items: center; gap: 14px;
}
.about-badge .ab-num { font-size: 1.8rem; font-weight: 800; color: var(--copper-deep); line-height: 1; }
.about-badge .ab-lbl { font-size: .78rem; color: var(--muted); }
.about-text .section-title { margin-bottom: 20px; }
.about-text p { color: var(--muted); margin-bottom: 16px; font-size: .97rem; }
.about-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.about-tags span {
  font-size: .82rem; font-weight: 700; padding: 8px 16px; border-radius: 50px;
  background: rgba(79,147,184,.1); color: var(--steel-deep);
}

/* =========================================================
   MISSION / VISION / STRENGTH
   ========================================================= */
#mvs { background: var(--cream-2); }
.mvs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.mvs-card {
  background: var(--card); border-radius: var(--radius); padding: 38px 30px;
  border-top: 4px solid var(--copper); box-shadow: var(--shadow-sm);
  transition: transform .35s var(--ease), box-shadow .35s;
}
.mvs-card:nth-child(2) { border-top-color: var(--steel); }
.mvs-card:nth-child(3) { border-top-color: var(--graphite); }
.mvs-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.mvs-icon { width: 58px; height: 58px; border-radius: 15px; display: grid; place-items: center; background: rgba(232,118,58,.1); margin-bottom: 20px; }
.mvs-card:nth-child(2) .mvs-icon { background: rgba(79,147,184,.12); }
.mvs-card:nth-child(3) .mvs-icon { background: rgba(27,29,34,.08); }
.mvs-icon svg { width: 30px; height: 30px; stroke: var(--copper-deep); }
.mvs-card:nth-child(2) .mvs-icon svg { stroke: var(--steel-deep); }
.mvs-card:nth-child(3) .mvs-icon svg { stroke: var(--graphite); }
.mvs-card h3 { font-size: 1.2rem; font-weight: 800; color: var(--graphite); margin-bottom: 12px; }
.mvs-card p { font-size: .93rem; color: var(--muted); }

/* =========================================================
   HISTORY / SERVICES CHIPS
   ========================================================= */
#history { background: var(--cream); }
.history-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 18px; }
.history-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 26px 22px; display: flex; align-items: center; gap: 16px;
  transition: transform .3s var(--ease), box-shadow .3s, border-color .3s;
}
.history-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--copper); }
.history-num {
  width: 42px; height: 42px; flex-shrink: 0; border-radius: 11px;
  background: linear-gradient(135deg, var(--graphite-2), var(--graphite));
  color: var(--copper-2); display: grid; place-items: center;
  font-weight: 800; font-size: .9rem;
}
.history-card h3 { font-size: .98rem; font-weight: 700; color: var(--graphite); line-height: 1.3; }

/* =========================================================
   SERVICES (detailed)
   ========================================================= */
#service { background: var(--graphite); color: #fff; }
#service .section-title { color: #fff; }
#service .section-head p { color: rgba(255,255,255,.75); }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
.service-card {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius); padding: 32px 26px; position: relative; overflow: hidden;
  transition: transform .35s var(--ease), background .35s;
}
.service-card::after { content: ""; position: absolute; bottom: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--copper), var(--steel)); transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease); }
.service-card:hover { transform: translateY(-8px); background: rgba(255,255,255,.08); }
.service-card:hover::after { transform: scaleX(1); }
.service-icon { width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center; background: rgba(232,118,58,.16); margin-bottom: 18px; }
.service-icon svg { width: 28px; height: 28px; stroke: var(--copper-2); }
.service-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.service-card p { font-size: .9rem; color: rgba(255,255,255,.72); }

/* =========================================================
   PRODUCTS
   ========================================================= */
#product { background: var(--cream); }
.products-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 24px; }
.product-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-sm);
  transition: transform .35s var(--ease), box-shadow .35s;
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.product-top {
  aspect-ratio: 16/10; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--cream-2), #e6ded2);
  position: relative;
}
.product-top svg { width: 38%; stroke: var(--copper-deep); opacity: .85; }
.product-body { padding: 24px; }
.product-body h3 { font-size: 1.08rem; font-weight: 700; color: var(--graphite); margin-bottom: 8px; }
.product-body p { font-size: .9rem; color: var(--muted); }

/* =========================================================
   CAREER
   ========================================================= */
#career {
  background:
    linear-gradient(rgba(27,29,34,.88), rgba(27,29,34,.92)),
    linear-gradient(135deg, var(--graphite-2), var(--graphite));
  color: #fff; position: relative;
}
.career-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.career-img {
  width: 100%; aspect-ratio: 3/2; border-radius: var(--radius);
  background:
    radial-gradient(circle at 30% 30%, rgba(232,118,58,.35), transparent 55%),
    radial-gradient(circle at 75% 75%, rgba(79,147,184,.32), transparent 55%),
    linear-gradient(135deg, #30333c, var(--graphite));
  display: grid; place-items: center; box-shadow: var(--shadow-lg); overflow: hidden;
}
.career-img svg { width: 40%; opacity: .9; }
.career-text .section-title { color: #fff; }
.career-text p { color: rgba(255,255,255,.8); margin: 16px 0 26px; }
.career-perks { display: grid; gap: 12px; margin-bottom: 28px; }
.career-perks li { display: flex; align-items: center; gap: 11px; font-weight: 600; font-size: .95rem; }
.career-perks .tick { width: 24px; height: 24px; flex-shrink: 0; border-radius: 50%; background: rgba(232,118,58,.2); color: var(--copper-2); display: grid; place-items: center; font-size: .75rem; font-weight: 800; }

/* =========================================================
   VIDEOS
   ========================================================= */
#video { background: var(--cream); }
.videos-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 26px; }
.video-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-sm);
  transition: transform .35s var(--ease), box-shadow .35s;
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.video-frame { position: relative; width: 100%; aspect-ratio: 16/9; background: #000; }
.video-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video-placeholder {
  position: absolute; inset: 0; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--graphite-2), var(--graphite));
}
.video-placeholder svg { width: 64px; height: 64px; }
.video-body { padding: 20px 22px 24px; }
.video-body h3 { font-size: 1.02rem; font-weight: 700; color: var(--graphite); }

/* =========================================================
   CONTACT FORM
   ========================================================= */
#contact { background: var(--cream-2); }
.contact-wrap {
  display: grid; grid-template-columns: .9fr 1.1fr; gap: 0;
  background: var(--card); border-radius: 22px; overflow: hidden;
  box-shadow: var(--shadow-md); border: 1px solid var(--line);
}
.contact-aside {
  background:
    radial-gradient(500px 300px at 20% 10%, rgba(232,118,58,.25), transparent 60%),
    linear-gradient(160deg, var(--graphite), #15171b);
  color: #fff; padding: 48px 42px;
}
.contact-aside .eyebrow { color: var(--copper-2); }
.contact-aside .eyebrow::before { background: var(--copper-2); }
.contact-aside h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); font-weight: 800; line-height: 1.15; margin-bottom: 16px; }
.contact-aside > p { color: rgba(255,255,255,.78); margin-bottom: 32px; font-size: .95rem; }
.contact-info { display: grid; gap: 20px; }
.contact-info li { display: flex; gap: 15px; align-items: flex-start; }
.contact-info .ci-ico { width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0; background: rgba(255,255,255,.08); display: grid; place-items: center; }
.contact-info .ci-ico svg { width: 20px; height: 20px; stroke: var(--copper-2); }
.contact-info .ci-lbl { font-size: .74rem; text-transform: uppercase; letter-spacing: 1px; color: rgba(255,255,255,.55); }
.contact-info .ci-val { font-weight: 700; font-size: .96rem; }

.contact-form { padding: 48px 42px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: .84rem; font-weight: 700; color: var(--graphite); margin-bottom: 7px; }
.form-group label .req { color: #d65a3a; }
.form-control {
  width: 100%; font-family: inherit; font-size: .95rem; color: var(--ink);
  padding: 13px 16px; border: 1.5px solid var(--line); border-radius: 11px;
  background: #fcfaf7; transition: border-color .25s, box-shadow .25s, background .25s;
}
.form-control::placeholder { color: #a79f93; }
.form-control:focus { outline: none; border-color: var(--copper); background: #fff; box-shadow: 0 0 0 4px rgba(232,118,58,.13); }
textarea.form-control { resize: vertical; min-height: 128px; }
.form-control.invalid { border-color: #d65a3a; box-shadow: 0 0 0 4px rgba(214,90,58,.12); }
.contact-form .btn { width: 100%; justify-content: center; margin-top: 4px; }
.form-note { display: none; margin-top: 16px; padding: 13px 16px; border-radius: 11px; font-size: .9rem; font-weight: 600; }
.form-note.show { display: block; }
.form-note.success { background: rgba(79,147,184,.12); color: var(--steel-deep); border: 1px solid rgba(79,147,184,.3); }
.form-note.error { background: rgba(214,90,58,.1); color: #b5482c; border: 1px solid rgba(214,90,58,.28); }
.btn[disabled] { opacity: .65; cursor: not-allowed; transform: none; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer { background: var(--graphite); color: rgba(255,255,255,.72); padding: 70px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 50px; }
.footer-brand .brand { color: #fff; margin-bottom: 18px; }
.footer-brand p { font-size: .92rem; max-width: 330px; }
.footer-social { display: flex; gap: 12px; margin-top: 22px; }
.footer-social a { width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; background: rgba(255,255,255,.07); transition: background .25s, transform .25s; }
.footer-social a:hover { background: var(--copper-deep); transform: translateY(-3px); }
.footer-social svg { width: 18px; height: 18px; fill: #fff; }
.footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 11px; }
.footer-col ul li a { font-size: .92rem; transition: color .2s, padding-left .2s; }
.footer-col ul li a:hover { color: var(--copper-2); padding-left: 5px; }
.footer-contact li { display: flex; gap: 12px; margin-bottom: 16px; font-size: .92rem; }
.footer-contact svg { width: 19px; height: 19px; stroke: var(--copper-2); flex-shrink: 0; margin-top: 3px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 22px 0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: .85rem; }

/* =========================================================
   REVEAL + BACK TO TOP
   ========================================================= */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.to-top {
  position: fixed; right: 22px; bottom: 22px; width: 48px; height: 48px; border-radius: 50%;
  background: var(--copper-deep); color: #fff; display: grid; place-items: center;
  box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transform: translateY(15px);
  transition: opacity .3s, transform .3s, background .3s; z-index: 900; border: none; cursor: pointer;
}
.to-top.show { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { background: var(--copper); }
.to-top svg { width: 22px; height: 22px; stroke: #fff; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { max-width: 460px; }
  .about-grid { grid-template-columns: 1fr; gap: 70px; }
  .sye-grid { grid-template-columns: 1fr; }
  .mvs-grid { grid-template-columns: 1fr; }
  .career-wrap { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
}
@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed; top: 0; right: 0; height: 100vh; width: min(78vw, 320px);
    background: var(--graphite-2); flex-direction: column; align-items: stretch;
    justify-content: flex-start; padding: 96px 24px 30px; gap: 6px;
    transform: translateX(100%); transition: transform .4s var(--ease);
    box-shadow: -20px 0 60px rgba(0,0,0,.4); overflow-y: auto;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { padding: 14px 16px; font-size: 1rem; }
  .nav-cta { margin: 12px 0 0; justify-content: center; }
  .nav-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.5); opacity: 0; pointer-events: none; transition: opacity .35s; z-index: 999; }
  .nav-overlay.open { opacity: 1; pointer-events: auto; }

  .section { padding: 68px 0; }
  .hero { padding: 120px 0 70px; min-height: auto; }
  .hero-stats { gap: 22px; flex-wrap: wrap; }
  .about-badge { left: 50%; right: auto; transform: translateX(-50%); bottom: -26px; }
  .contact-wrap { grid-template-columns: 1fr; }
  .contact-aside, .contact-form { padding: 38px 26px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 420px) {
  .container { padding: 0 16px; }
  .hero-stats .num { font-size: 1.5rem; }
  .brand-text strong { font-size: .98rem; }
  .sye-letter { font-size: 2.8rem; }
}