/* =====================================================================
   KEY SCIENTIFIC CORPORATION (KSC)
   Scientific research-institute design system
   Palette: white · soft silver · deep navy · subtle cyan
   Single typeface: Inter
   ===================================================================== */

:root {
  /* Core palette */
  --white:      #ffffff;
  --paper:      #f6f8fb;
  --paper-2:    #eef2f7;
  --silver:     #dde4ec;
  --silver-2:   #c6d0dc;
  --line:       #e4e9f0;
  --line-strong:#d2dae4;

  --navy:       #0a1f3d;
  --navy-2:     #102a4f;
  --navy-3:     #1c3b66;

  --cyan:       #06b6d4;
  --cyan-deep:  #0891b2;
  --cyan-soft:  #e2f6fb;

  --ink:        #14202f;
  --body:       #44566b;
  --muted:      #8395a8;

  /* Type */
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;

  /* Layout */
  --container: 1240px;
  --gutter: 40px;
  --radius: 4px;
  --radius-lg: 8px;

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(10, 31, 61, 0.04), 0 2px 8px rgba(10, 31, 61, 0.04);
  --shadow-md: 0 8px 30px rgba(10, 31, 61, 0.08);
  --shadow-lg: 0 24px 60px rgba(10, 31, 61, 0.12);
}

/* ----------------------------------------------------------------- Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--body);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "tnum" 1, "ss01" 1;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

h1, h2, h3, h4 { color: var(--ink); font-weight: 700; line-height: 1.12; letter-spacing: -0.02em; }

::selection { background: var(--navy); color: #fff; }

/* ------------------------------------------------------------- Utilities */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--cyan-deep);
}
.eyebrow::before {
  content: ""; width: 28px; height: 1px; background: var(--cyan); display: inline-block;
}
.eyebrow.center::after {
  content: ""; width: 28px; height: 1px; background: var(--cyan); display: inline-block;
}

.section-index {
  font-size: 12px; font-weight: 600; letter-spacing: 0.18em; color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.mono {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* ----------------------------------------------------------- Scroll bar */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--cyan-deep));
  z-index: 1000; transition: width 0.1s linear;
}

/* --------------------------------------------------------------- Header */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.site-header.scrolled {
  border-bottom-color: var(--line);
  background: rgba(255, 255, 255, 0.94);
}
.nav-wrapper { display: flex; align-items: center; justify-content: space-between; height: 76px; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 40px; height: 40px; flex: none;
  border-radius: 6px;
  background: var(--navy);
  display: grid; place-items: center;
  position: relative; overflow: hidden;
}
.brand-mark::before {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(transparent 49%, rgba(6,182,212,0.5) 50%, transparent 51%),
    linear-gradient(90deg, transparent 49%, rgba(6,182,212,0.5) 50%, transparent 51%);
  background-size: 8px 8px;
  opacity: 0.55;
}
.brand-mark span {
  position: relative; color: #fff; font-weight: 800; font-size: 17px; letter-spacing: -0.04em;
}
.brand-text strong { display: block; color: var(--ink); font-size: 15px; font-weight: 700; letter-spacing: -0.01em; line-height: 1.1; }
.brand-text em { display: block; font-style: normal; font-size: 11px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-top: 2px; }

.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--body);
  position: relative; transition: color 0.2s var(--ease);
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 1.5px;
  background: var(--cyan); transition: width 0.25s var(--ease);
}
.nav-links a:hover { color: var(--navy); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.nav-privacy { color: var(--muted); }

.header-cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--navy); color: #fff;
  font-size: 13.5px; font-weight: 600;
  padding: 11px 20px; border-radius: var(--radius);
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
}
.header-cta:hover { background: var(--navy-2); transform: translateY(-1px); }

.menu-toggle { display: none; width: 40px; height: 40px; flex-direction: column; gap: 5px; justify-content: center; align-items: center; }
.menu-toggle span { width: 22px; height: 2px; background: var(--navy); transition: 0.3s var(--ease); }
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed; top: 76px; left: 0; right: 0; z-index: 899;
  background: #fff; border-bottom: 1px solid var(--line);
  padding: 16px var(--gutter) 28px;
  display: flex; flex-direction: column; gap: 4px;
  transform: translateY(-12px); opacity: 0; pointer-events: none;
  transition: 0.3s var(--ease);
}
.mobile-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.mobile-menu a { padding: 13px 4px; font-size: 15px; font-weight: 500; color: var(--ink); border-bottom: 1px solid var(--line); }
.mobile-menu .mobile-cta { margin-top: 14px; border: none; background: var(--navy); color: #fff; text-align: center; border-radius: var(--radius); font-weight: 600; }

/* ----------------------------------------------------------------- Hero */
.hero {
  position: relative; padding: 150px 0 90px;
  background:
    radial-gradient(circle at 12% 8%, rgba(6,182,212,0.06), transparent 38%),
    linear-gradient(180deg, var(--paper) 0%, var(--white) 100%);
  overflow: hidden;
}
.hero::before {
  /* technical grid */
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.5), transparent 70%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,0.5), transparent 70%);
  opacity: 0.5;
}
.hero-grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center;
}
.hero-copy .eyebrow { margin-bottom: 26px; }
.hero h1 { font-size: clamp(2.6rem, 5vw, 4rem); letter-spacing: -0.035em; color: var(--navy); }
.hero h1 .accent { color: var(--cyan-deep); }
.hero-lead { font-size: 1.15rem; color: var(--body); margin: 26px 0 34px; max-width: 30em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 14.5px; font-weight: 600; padding: 14px 26px; border-radius: var(--radius);
  transition: 0.25s var(--ease);
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-2); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-ghost { color: var(--navy); border: 1px solid var(--line-strong); background: #fff; }
.btn-ghost:hover { border-color: var(--navy); transform: translateY(-2px); }
.btn svg { width: 16px; height: 16px; }

.hero-stats {
  display: flex; gap: 36px; margin-top: 48px; padding-top: 28px; border-top: 1px solid var(--line);
}
.hero-stats .stat strong { display: block; font-size: 1.9rem; font-weight: 800; color: var(--navy); letter-spacing: -0.03em; }
.hero-stats .stat span { font-size: 12.5px; color: var(--muted); letter-spacing: 0.04em; }

.hero-visual { position: relative; }
.hero-figure {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg); border: 1px solid var(--line);
  aspect-ratio: 4 / 4.4;
}
.hero-figure img { width: 100%; height: 100%; object-fit: cover; }
.hero-figure::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(10,31,61,0.45));
}
.hero-tag {
  position: absolute; z-index: 3; background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 12px 16px; box-shadow: var(--shadow-md);
}
.hero-tag .label { font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.hero-tag .value { font-size: 15px; font-weight: 700; color: var(--navy); display: flex; align-items: center; gap: 7px; }
.hero-tag .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 3px var(--cyan-soft); }
.hero-tag.t-1 { top: 26px; left: -28px; }
.hero-tag.t-2 { bottom: 30px; right: -24px; }

/* --------------------------------------------------------- Logo / trust */
.trust-bar { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper); }
.trust-inner { display: flex; align-items: center; gap: 40px; padding: 26px 0; flex-wrap: wrap; }
.trust-label { font-size: 12px; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
.trust-items { display: flex; flex-wrap: wrap; gap: 14px 28px; flex: 1; }
.trust-items span { font-size: 14px; font-weight: 600; color: var(--navy-3); letter-spacing: 0.01em; }
.trust-items span + span::before { content: "·"; margin-right: 28px; color: var(--silver-2); }

/* ------------------------------------------------------------- Sections */
.section { padding: 110px 0; position: relative; }
.section.alt { background: var(--paper); }
.section.navy { background: var(--navy); }

.section-head { max-width: 720px; margin-bottom: 60px; }
.section-head.center { margin: 0 auto 64px; text-align: center; }
.section-head .meta { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.section-head.center .meta { justify-content: center; }
.section-head h2 { font-size: clamp(1.9rem, 3.4vw, 2.7rem); color: var(--navy); margin-bottom: 18px; }
.section.navy .section-head h2 { color: #fff; }
.section-head p { font-size: 1.08rem; color: var(--body); }
.section.navy .section-head p { color: #b8c6d8; }

/* ------------------------------------------------ Lab solutions (split) */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.split.reverse .split-media { order: 2; }
.split-media {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--line); box-shadow: var(--shadow-md); aspect-ratio: 5 / 4;
}
.split-media img { width: 100%; height: 100%; object-fit: cover; }
.split-badge {
  position: absolute; left: 18px; bottom: 18px; z-index: 2;
  background: rgba(255,255,255,0.95); backdrop-filter: blur(8px);
  border-radius: var(--radius); padding: 10px 14px; font-size: 12px; font-weight: 600;
  color: var(--navy); letter-spacing: 0.05em; border: 1px solid var(--line);
}

.feature-list { list-style: none; margin-top: 30px; display: grid; gap: 2px; }
.feature-list li {
  display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: start;
  padding: 20px 0; border-top: 1px solid var(--line);
}
.feature-list li:last-child { border-bottom: 1px solid var(--line); }
.feature-list .fnum { font-size: 12px; font-weight: 700; color: var(--cyan-deep); font-variant-numeric: tabular-nums; padding-top: 3px; }
.feature-list .ftext strong { display: block; color: var(--ink); font-size: 16px; font-weight: 600; margin-bottom: 3px; }
.feature-list .ftext span { font-size: 14.5px; color: var(--body); }

/* --------------------------------------------- Instruments (card grid) */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; transition: 0.3s var(--ease); display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--silver); }
.card-img { aspect-ratio: 16 / 11; overflow: hidden; position: relative; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.card:hover .card-img img { transform: scale(1.05); }
.card-tag {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  background: rgba(10,31,61,0.85); color: #fff; backdrop-filter: blur(6px);
  font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 3px;
}
.card-body { padding: 24px 24px 28px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { font-size: 1.2rem; color: var(--navy); margin-bottom: 9px; }
.card-body p { font-size: 14.5px; color: var(--body); flex: 1; }
.card-spec {
  margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 7px;
}
.card-spec span {
  font-size: 11.5px; font-weight: 600; color: var(--navy-3);
  background: var(--paper-2); border-radius: 3px; padding: 4px 9px; letter-spacing: 0.02em;
}

/* ------------------------------------------------ Quality assurance */
.qa-layout { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.qa-media { position: relative; }
.qa-media img { border-radius: var(--radius-lg); border: 1px solid var(--line); box-shadow: var(--shadow-md); width: 100%; aspect-ratio: 4/5; object-fit: cover; }
.qa-figure-2 {
  position: absolute; right: -22px; bottom: -22px; width: 46%;
  border-radius: var(--radius); overflow: hidden; border: 4px solid #fff; box-shadow: var(--shadow-lg);
}
.qa-figure-2 img { border-radius: 0; border: none; box-shadow: none; aspect-ratio: 1/1; }

.qa-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; margin-top: 32px; }
.qa-metric { background: #fff; padding: 24px; }
.qa-metric strong { display: block; font-size: 2rem; font-weight: 800; color: var(--navy); letter-spacing: -0.03em; }
.qa-metric strong .u { font-size: 1rem; color: var(--cyan-deep); }
.qa-metric span { font-size: 13px; color: var(--muted); }

.std-list { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.std-list li {
  font-size: 12.5px; font-weight: 600; color: var(--navy-3); letter-spacing: 0.04em;
  border: 1px solid var(--line-strong); border-radius: 100px; padding: 7px 16px; background: #fff;
}

/* -------------------------------------------------- Research support */
.research-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.research-card {
  display: grid; grid-template-columns: 150px 1fr; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden;
  transition: 0.3s var(--ease);
}
.research-card:hover { box-shadow: var(--shadow-md); border-color: var(--silver); }
.research-card .rc-img { overflow: hidden; }
.research-card .rc-img img { width: 100%; height: 100%; object-fit: cover; }
.research-card .rc-body { padding: 26px 26px; }
.research-card .rc-body .section-index { color: var(--cyan-deep); }
.research-card h3 { font-size: 1.18rem; color: var(--navy); margin: 8px 0 8px; }
.research-card p { font-size: 14px; color: var(--body); }

/* ------------------------------------------- Advanced technologies (navy) */
.tech-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 56px; }
.tech-card {
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg); padding: 28px 24px; transition: 0.3s var(--ease);
}
.tech-card:hover { background: rgba(6,182,212,0.07); border-color: rgba(6,182,212,0.35); transform: translateY(-4px); }
.tech-card .tnum { font-size: 12px; font-weight: 700; color: var(--cyan); font-variant-numeric: tabular-nums; letter-spacing: 0.1em; }
.tech-card h3 { color: #fff; font-size: 1.15rem; margin: 16px 0 10px; }
.tech-card p { color: #9fb2c8; font-size: 14px; }

.tech-feature {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg); overflow: hidden;
}
.tech-feature-media { min-height: 340px; position: relative; overflow: hidden; }
.tech-feature-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.tech-feature-copy { padding: 50px; background: rgba(255,255,255,0.025); }
.tech-feature-copy .eyebrow { color: var(--cyan); }
.tech-feature-copy h3 { color: #fff; font-size: 1.7rem; margin: 18px 0 16px; }
.tech-feature-copy p { color: #aebfd2; margin-bottom: 14px; }
.tech-points { list-style: none; display: grid; gap: 12px; margin-top: 22px; }
.tech-points li { display: flex; gap: 12px; align-items: flex-start; color: #cdd9e6; font-size: 14.5px; }
.tech-points li::before { content: ""; flex: none; width: 6px; height: 6px; margin-top: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 3px rgba(6,182,212,0.2); }

/* ----------------------------------------------- Industry applications */
.apps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.app-cell {
  position: relative; background: #fff; min-height: 280px; overflow: hidden;
  display: flex; flex-direction: column; justify-content: flex-end;
}
.app-cell img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.app-cell::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,31,61,0.05) 30%, rgba(10,31,61,0.82)); }
.app-cell:hover img { transform: scale(1.06); }
.app-cell .app-content { position: relative; z-index: 2; padding: 26px; }
.app-cell .app-num { font-size: 11px; font-weight: 700; color: var(--cyan); letter-spacing: 0.14em; font-variant-numeric: tabular-nums; }
.app-cell h3 { color: #fff; font-size: 1.25rem; margin: 8px 0 6px; }
.app-cell p { color: rgba(255,255,255,0.78); font-size: 13.5px; }

/* ---------------------------------------------------------- Process strip */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 16px; }
.process-step { padding: 0 28px; border-left: 1px solid var(--line); }
.process-step:first-child { padding-left: 0; border-left: none; }
.process-step .ps-num { font-size: 13px; font-weight: 700; color: var(--cyan-deep); font-variant-numeric: tabular-nums; letter-spacing: 0.08em; }
.process-step h4 { font-size: 1.05rem; color: var(--navy); margin: 14px 0 8px; }
.process-step p { font-size: 13.5px; color: var(--body); }

/* --------------------------------------------------------------- Contact */
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); background: #fff; }
.contact-info { padding: 56px; background: var(--navy); color: #fff; position: relative; overflow: hidden; }
.contact-info::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 40px 40px; opacity: 0.5;
  mask-image: radial-gradient(circle at 80% 20%, black, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 80% 20%, black, transparent 70%);
}
.contact-info > * { position: relative; z-index: 2; }
.contact-info .eyebrow { color: var(--cyan); }
.contact-info h2 { color: #fff; font-size: 1.9rem; margin: 18px 0 14px; }
.contact-info > p { color: #aebfd2; margin-bottom: 36px; }
.contact-rows { display: grid; gap: 4px; }
.contact-row { display: grid; grid-template-columns: auto 1fr; gap: 18px; padding: 22px 0; border-top: 1px solid rgba(255,255,255,0.12); align-items: start; }
.contact-row:last-child { border-bottom: 1px solid rgba(255,255,255,0.12); }
.contact-row .ic { width: 38px; height: 38px; border-radius: 6px; background: rgba(6,182,212,0.14); border: 1px solid rgba(6,182,212,0.3); display: grid; place-items: center; }
.contact-row .ic svg { width: 18px; height: 18px; stroke: var(--cyan); }
.contact-row .rlabel { font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: #8aa0bb; }
.contact-row .rvalue { font-size: 16px; font-weight: 600; color: #fff; }
.contact-row a.rvalue:hover { color: var(--cyan); }

.contact-form { padding: 56px; }
.contact-form h3 { font-size: 1.4rem; color: var(--navy); margin-bottom: 8px; }
.contact-form > p { font-size: 14.5px; color: var(--body); margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.field input, .field select, .field textarea {
  width: 100%; font-family: inherit; font-size: 15px; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line-strong); border-radius: var(--radius);
  padding: 13px 15px; transition: 0.2s var(--ease);
}
.field textarea { resize: vertical; min-height: 110px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--cyan); background: #fff; box-shadow: 0 0 0 3px var(--cyan-soft); }
.form-note { font-size: 12.5px; color: var(--muted); margin-top: 14px; }
.form-status { font-size: 14px; font-weight: 600; color: var(--cyan-deep); margin-top: 14px; min-height: 20px; }

/* ---------------------------------------------------------------- Footer */
.site-footer { background: #07182f; color: #9fb2c8; padding: 72px 0 0; }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 52px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand .brand-mark { width: 44px; height: 44px; }
.footer-brand .fb-name { color: #fff; font-size: 17px; font-weight: 700; margin: 18px 0 12px; letter-spacing: -0.01em; }
.footer-brand p { font-size: 14px; max-width: 30em; }
.footer-col h4 { color: #fff; font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 18px; font-weight: 600; }
.footer-col ul { list-style: none; display: grid; gap: 11px; }
.footer-col a, .footer-col li { font-size: 14px; color: #9fb2c8; transition: color 0.2s var(--ease); }
.footer-col a:hover { color: var(--cyan); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; padding: 26px 0; }
.footer-bottom p { font-size: 13px; color: #6f86a1; }
.footer-bottom .fb-links { display: flex; gap: 24px; }
.footer-bottom .fb-links a { font-size: 13px; color: #9fb2c8; }
.footer-bottom .fb-links a:hover { color: var(--cyan); }

/* --------------------------------------------------------- Privacy page */
.policy-page { background: var(--paper); }
.policy-hero { padding: 130px 0 50px; background: #fff; border-bottom: 1px solid var(--line); }
.policy-hero .eyebrow { margin-bottom: 20px; }
.policy-hero h1 { font-size: clamp(2rem, 4vw, 3rem); color: var(--navy); }
.policy-hero p { color: var(--body); margin-top: 16px; max-width: 50em; }
.policy-hero .updated { margin-top: 22px; font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }

.policy-wrap { display: grid; grid-template-columns: 240px 1fr; gap: 56px; padding: 64px 0 100px; align-items: start; }
.policy-toc { position: sticky; top: 100px; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px; background: #fff; }
.policy-toc h4 { font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.policy-toc ol { list-style: none; counter-reset: toc; display: grid; gap: 3px; }
.policy-toc a { display: block; font-size: 13.5px; color: var(--body); padding: 7px 8px; border-radius: 4px; counter-increment: toc; transition: 0.2s var(--ease); }
.policy-toc a::before { content: counter(toc, decimal-leading-zero) "  "; color: var(--cyan-deep); font-weight: 600; font-variant-numeric: tabular-nums; }
.policy-toc a:hover { background: var(--paper); color: var(--navy); }

.policy-body { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 48px 52px; }
.policy-body section { padding: 26px 0; border-top: 1px solid var(--line); scroll-margin-top: 100px; }
.policy-body section:first-child { border-top: none; padding-top: 0; }
.policy-body h2 { font-size: 1.4rem; color: var(--navy); margin-bottom: 14px; display: flex; align-items: baseline; gap: 12px; }
.policy-body h2 .pn { font-size: 13px; color: var(--cyan-deep); font-weight: 700; font-variant-numeric: tabular-nums; }
.policy-body h3 { font-size: 1.05rem; color: var(--ink); margin: 20px 0 8px; }
.policy-body p { margin-bottom: 14px; font-size: 15px; }
.policy-body ul { margin: 0 0 16px 0; padding-left: 0; list-style: none; display: grid; gap: 9px; }
.policy-body ul li { position: relative; padding-left: 22px; font-size: 15px; }
.policy-body ul li::before { content: ""; position: absolute; left: 2px; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); }
.policy-body a { color: var(--cyan-deep); font-weight: 500; }
.policy-body a:hover { text-decoration: underline; }
.policy-body strong { color: var(--ink); }
.policy-table { width: 100%; border-collapse: collapse; margin: 8px 0 16px; font-size: 14px; }
.policy-table th, .policy-table td { text-align: left; padding: 12px 14px; border: 1px solid var(--line); }
.policy-table th { background: var(--paper); font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--navy); }

/* --------------------------------------------------------- Reveal anim */
[data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }

/* ------------------------------------------------------------ Responsive */
@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { max-width: 520px; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  :root { --gutter: 24px; }
  .nav-links, .header-cta { display: none; }
  .menu-toggle { display: flex; }
  .section { padding: 80px 0; }
  .split, .qa-layout, .contact-layout, .research-grid { grid-template-columns: 1fr; gap: 40px; }
  .split.reverse .split-media { order: 0; }
  .card-grid, .apps-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-feature { grid-template-columns: 1fr; }
  .tech-feature-media { min-height: 260px; }
  .process { grid-template-columns: repeat(2, 1fr); gap: 30px 0; }
  .process-step { border-left: none; padding: 0 16px; }
  .policy-wrap { grid-template-columns: 1fr; }
  .policy-toc { position: static; }
  .qa-figure-2 { position: static; width: 100%; margin-top: 16px; border-width: 0; }
}
@media (max-width: 600px) {
  :root { --gutter: 18px; }
  .hero { padding-top: 120px; }
  .hero-stats { flex-wrap: wrap; gap: 22px; }
  .hero-tag { display: none; }
  .card-grid, .apps-grid, .qa-metrics, .tech-grid { grid-template-columns: 1fr; }
  .research-card { grid-template-columns: 1fr; }
  .research-card .rc-img { height: 180px; }
  .form-row { grid-template-columns: 1fr; }
  .contact-info, .contact-form, .policy-body, .tech-feature-copy { padding: 32px 24px; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}