/* =========================================================
   Kotetsu Trade Co., Ltd. — Master Stylesheet
   Premium Specialty Chemical Distributor — Thailand
   ========================================================= */

:root {
  --color-navy-950: #06111f;
  --color-navy-900: #0a1a2e;
  --color-navy-800: #0f2440;
  --color-navy-700: #16345c;
  --color-navy-600: #1d4373;
  --color-navy-500: #285690;
  --color-gold-600: #a9762f;
  --color-gold-500: #c8933f;
  --color-gold-400: #dcae5c;
  --color-gold-300: #e8c988;
  --color-ivory: #f7f4ee;
  --color-ivory-dark: #eee8dc;
  --color-paper: #fbfaf7;
  --color-slate-700: #3d4653;
  --color-slate-500: #6b7480;
  --color-slate-300: #b9c0c9;
  --color-line: #e4e0d5;
  --color-jade: #0e6659;
  --color-jade-light: #12806f;
  --shadow-soft: 0 10px 30px -12px rgba(10, 26, 46, 0.25);
  --shadow-card: 0 4px 18px rgba(10, 26, 46, 0.08);
  --radius-md: 10px;
  --radius-lg: 18px;
  --ff-head: 'Playfair Display', 'Noto Serif Thai', serif;
  --ff-body: 'Inter', 'Noto Sans Thai', sans-serif;
  --container-w: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--ff-body);
  color: var(--color-slate-700);
  background: var(--color-paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--ff-head);
  color: var(--color-navy-900);
  line-height: 1.22;
  margin: 0 0 .6em;
  font-weight: 700;
}

p { margin: 0 0 1em; }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 28px;
}

.section { padding: 96px 0; }
.section--tight { padding: 64px 0; }
.section--dark {
  background: linear-gradient(180deg, var(--color-navy-950), var(--color-navy-900) 60%, var(--color-navy-800));
  color: var(--color-slate-300);
}
.section--dark h2, .section--dark h3 { color: #fff; }
.section--dark p { color: var(--color-slate-300); }
.section--ivory { background: var(--color-ivory); }
.section--paper { background: var(--color-paper); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color-gold-600);
  font-weight: 700;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: '';
  width: 28px;
  height: 2px;
  background: var(--color-gold-500);
  display: inline-block;
}
.section--dark .eyebrow { color: var(--color-gold-400); }

.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: clamp(28px, 3.2vw, 40px); }
.section-head .lead { font-size: 17px; color: var(--color-slate-500); }
.section--dark .section-head .lead { color: var(--color-slate-300); }

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: .02em;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(120deg, var(--color-gold-500), var(--color-gold-600));
  color: #fff;
  box-shadow: 0 8px 22px -8px rgba(169, 118, 47, .55);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 26px -8px rgba(169, 118, 47, .65); }
.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,.4);
  color: #fff;
}
.btn-outline:hover { background: rgba(255,255,255,.1); border-color: #fff; }
.btn-outline-navy {
  background: transparent;
  border-color: var(--color-navy-700);
  color: var(--color-navy-800);
}
.btn-outline-navy:hover { background: var(--color-navy-800); color: #fff; }
.btn-block { width: 100%; justify-content: center; }

/* ---------------- Header / Nav ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(6, 17, 31, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(200, 147, 63, 0.25);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
}
.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-gold-400), var(--color-gold-600));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--ff-head);
  font-weight: 700;
  color: var(--color-navy-950);
  font-size: 18px;
  flex-shrink: 0;
}
.brand-text { line-height: 1.15; }
.brand-text .name { font-family: var(--ff-head); font-size: 17px; font-weight: 700; letter-spacing: .01em; }
.brand-text .tag { font-size: 10.5px; letter-spacing: .16em; text-transform: uppercase; color: var(--color-gold-400); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-links a {
  color: #d8dce3;
  font-size: 14.5px;
  font-weight: 500;
  position: relative;
  padding: 6px 0;
  transition: color .2s ease;
}
.nav-links a:hover, .nav-links a.active { color: #fff; }
.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--color-gold-500);
}
.nav-cta { display: flex; align-items: center; gap: 18px; }
.nav-cta .btn { padding: 11px 22px; font-size: 13.5px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span { width: 24px; height: 2px; background: #fff; display: block; border-radius: 2px; }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  background: var(--color-navy-950);
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .38;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(115deg, rgba(6,17,31,.97) 20%, rgba(10,26,46,.82) 55%, rgba(15,36,64,.55));
}
.hero-pattern {
  position: absolute;
  right: -8%;
  top: -12%;
  width: 620px;
  height: 620px;
  background: radial-gradient(circle, rgba(200,147,63,.18), transparent 70%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; max-width: 720px; }
.hero-content .eyebrow { color: var(--color-gold-400); }
.hero-content h1 {
  color: #fff;
  font-size: clamp(34px, 5vw, 58px);
  margin-bottom: .4em;
}
.hero-content h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--color-gold-300), var(--color-gold-500));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-content .lead {
  font-size: 18px;
  color: #dfe4ea;
  max-width: 620px;
}
.hero-actions { display: flex; gap: 16px; margin-top: 34px; flex-wrap: wrap; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 64px;
  max-width: 620px;
}
.hero-stat .num { font-family: var(--ff-head); font-size: 30px; color: var(--color-gold-300); font-weight: 700; }
.hero-stat .label { font-size: 12.5px; color: #b9c2cf; letter-spacing: .04em; margin-top: 4px; }

/* ---------------- Breadcrumb / page hero (inner pages) ---------------- */
.page-hero {
  position: relative;
  padding: 150px 0 80px;
  color: #fff;
  background: linear-gradient(120deg, var(--color-navy-950), var(--color-navy-800));
  overflow: hidden;
}
.page-hero-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .22;
}
.page-hero-overlay { position: absolute; inset: 0; background: linear-gradient(120deg, rgba(6,17,31,.94), rgba(10,26,46,.75)); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; font-size: clamp(30px, 4vw, 46px); margin-bottom: .3em; }
.page-hero .lead { max-width: 640px; font-size: 16.5px; color: #dbe0e7; }
.crumb {
  font-size: 13px;
  color: var(--color-gold-400);
  letter-spacing: .06em;
  margin-bottom: 16px;
  display: flex;
  gap: 8px;
  align-items: center;
}
.crumb a { color: var(--color-gold-400); }
.crumb a:hover { text-decoration: underline; }

/* ---------------- Cards / Grids ---------------- */
.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); }

.card {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
  transition: transform .25s ease, box-shadow .25s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-soft); }
.card .icon-badge {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--color-navy-700), var(--color-navy-900));
  color: var(--color-gold-400);
  font-size: 21px;
  margin-bottom: 20px;
}
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--color-slate-500); font-size: 14.8px; margin-bottom: 0; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(200, 147, 63, .12);
  color: var(--color-gold-600);
  border: 1px solid rgba(200, 147, 63, .3);
}
.badge.badge-jade { background: rgba(14,102,89,.1); color: var(--color-jade); border-color: rgba(14,102,89,.25); }
.badge.badge-navy { background: rgba(22,52,92,.08); color: var(--color-navy-700); border-color: rgba(22,52,92,.2); }
.badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }

/* ---------------- Advantage strip ---------------- */
.advantage-strip {
  background: var(--color-navy-900);
  color: #fff;
  padding: 20px 0;
}
.advantage-strip .container { display: flex; flex-wrap: wrap; gap: 28px; justify-content: space-between; align-items: center; }
.advantage-strip .item { display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: #dfe4ea; }
.advantage-strip .item i { color: var(--color-gold-400); }

/* ---------------- Feature rows (image + text) ---------------- */
.feature-row {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
}
.feature-row.reverse .feature-media { order: 2; }
.feature-row.reverse .feature-text { order: 1; }
.feature-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  position: relative;
}
.feature-media img { width: 100%; height: 420px; object-fit: cover; }
.feature-media::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(200deg, rgba(6,17,31,0) 55%, rgba(6,17,31,.35));
}
.feature-text .check-list { margin: 22px 0; padding: 0; list-style: none; }
.feature-text .check-list li {
  display: flex;
  gap: 12px;
  padding: 9px 0;
  font-size: 15px;
  color: var(--color-slate-700);
  border-bottom: 1px dashed var(--color-line);
}
.feature-text .check-list li:last-child { border-bottom: none; }
.feature-text .check-list li i { color: var(--color-jade); margin-top: 3px; }

/* ---------------- Process steps ---------------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  counter-reset: step;
}
.process-step {
  position: relative;
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
}
.process-step .step-num {
  font-family: var(--ff-head);
  font-size: 34px;
  color: var(--color-gold-500);
  font-weight: 700;
  margin-bottom: 12px;
}
.process-step h4 { font-size: 16.5px; margin-bottom: 8px; }
.process-step p { font-size: 13.8px; color: var(--color-slate-500); margin: 0; }

/* ---------------- Filter bar ---------------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.filter-bar button {
  padding: 10px 20px;
  border-radius: 999px;
  border: 1.5px solid var(--color-line);
  background: #fff;
  color: var(--color-slate-700);
  font-size: 13.8px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s ease;
}
.filter-bar button:hover { border-color: var(--color-gold-500); color: var(--color-gold-600); }
.filter-bar button.active-filter {
  background: var(--color-navy-900);
  border-color: var(--color-navy-900);
  color: #fff;
}

/* ---------------- Product cards ---------------- */
.product-card {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
}
.product-card .pc-media {
  height: 210px;
  position: relative;
  overflow: hidden;
}
.product-card .pc-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.product-card:hover .pc-media img { transform: scale(1.06); }
.product-card .pc-media .pc-tag {
  position: absolute; top: 16px; left: 16px;
  background: rgba(6,17,31,.85);
  color: var(--color-gold-300);
  font-size: 11px; letter-spacing: .08em; text-transform: uppercase;
  padding: 6px 12px; border-radius: 999px; font-weight: 700;
}
.product-card .pc-body { padding: 26px 26px 30px; flex: 1; display: flex; flex-direction: column; }
.product-card h3 { font-size: 21px; margin-bottom: 4px; }
.product-card .pc-cas { font-size: 12.5px; color: var(--color-slate-500); font-family: 'Courier New', monospace; margin-bottom: 14px; }
.product-card .pc-desc { font-size: 14.6px; color: var(--color-slate-500); margin-bottom: 18px; }
.product-card .pc-block-title {
  font-size: 11.5px; text-transform: uppercase; letter-spacing: .1em;
  color: var(--color-gold-600); font-weight: 700; margin: 16px 0 8px;
}
.product-card .pc-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 6px; }
.product-card .pc-tags span {
  font-size: 12.5px; background: var(--color-ivory-dark); color: var(--color-navy-700);
  padding: 5px 11px; border-radius: 8px;
}
.product-card .pc-footer { margin-top: auto; padding-top: 20px; border-top: 1px solid var(--color-line); display: flex; justify-content: space-between; align-items: center; }
.product-card .pc-link { color: var(--color-navy-800); font-weight: 700; font-size: 14px; display: flex; align-items: center; gap: 6px; }
.product-card .pc-link i { transition: transform .2s ease; }
.product-card .pc-link:hover i { transform: translateX(4px); }

/* Morphology mini table */
.morph-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 18px 0 6px;
}
.morph-item {
  text-align: center;
  background: var(--color-ivory);
  border: 1px solid var(--color-line);
  border-radius: 12px;
  padding: 14px 8px;
}
.morph-item .m-icon { font-size: 22px; color: var(--color-navy-700); margin-bottom: 8px; }
.morph-item .m-name { font-size: 12.8px; font-weight: 700; color: var(--color-navy-900); }
.morph-item .m-sub { font-size: 10.8px; color: var(--color-slate-500); }

/* Spec table */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14.3px;
}
.spec-table th, .spec-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-line);
}
.spec-table th {
  background: var(--color-navy-900);
  color: #fff;
  font-weight: 600;
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.spec-table tr:nth-child(even) td { background: var(--color-ivory); }

/* Deep-dive material section */
.material-section {
  border: 1px solid var(--color-line);
  border-radius: 22px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-card);
  margin-bottom: 48px;
}
.material-head {
  background: linear-gradient(120deg, var(--color-navy-900), var(--color-navy-700));
  color: #fff;
  padding: 40px 44px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  flex-wrap: wrap;
}
.material-head h2 { color: #fff; margin-bottom: 6px; }
.material-head .cas { font-family: 'Courier New', monospace; color: var(--color-gold-300); font-size: 13.5px; }
.material-body { padding: 44px; }
.material-body .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; }

.highlight-box {
  background: var(--color-ivory);
  border-left: 4px solid var(--color-gold-500);
  border-radius: 10px;
  padding: 20px 24px;
  margin: 22px 0;
  font-size: 14.6px;
  color: var(--color-navy-800);
}
.highlight-box strong { color: var(--color-navy-900); }

.stat-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin: 26px 0; }
.stat-box {
  background: var(--color-navy-950);
  color: #fff;
  border-radius: 14px;
  padding: 20px 16px;
  text-align: center;
}
.stat-box .v { font-family: var(--ff-head); color: var(--color-gold-300); font-size: 22px; font-weight: 700; }
.stat-box .l { font-size: 11.3px; color: #c3cad4; margin-top: 6px; letter-spacing: .02em; }

.tier-flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 22px 0; position: relative; }
.tier-flow .tier {
  background: #fff;
  border: 1.5px solid var(--color-navy-700);
  border-radius: 14px;
  padding: 20px;
  position: relative;
}
.tier-flow .tier .t-num {
  position: absolute; top: -12px; left: 20px;
  background: var(--color-gold-500); color: #fff;
  width: 26px; height: 26px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 12.5px; font-weight: 700;
}
.tier-flow .tier h4 { font-size: 15px; margin-bottom: 6px; }
.tier-flow .tier p { font-size: 13.3px; color: var(--color-slate-500); margin: 0; }

/* ---------------- Testimonial / Quote block ---------------- */
.quote-block {
  background: var(--color-ivory);
  border-radius: var(--radius-lg);
  padding: 44px;
  position: relative;
}
.quote-block .quote-mark { font-family: var(--ff-head); font-size: 64px; color: var(--color-gold-400); line-height: 1; opacity: .6; }
.quote-block p.quote-text { font-size: 19px; color: var(--color-navy-900); font-style: italic; }
.section--dark .quote-block .quote-text { color: #f2f4f7; }
.section--dark .quote-block .quote-mark { color: var(--color-gold-300); opacity: .85; }

/* ---------------- Timeline (about page) ---------------- */
.timeline { position: relative; padding-left: 32px; border-left: 2px solid var(--color-line); }
.timeline-item { position: relative; padding-bottom: 40px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute; left: -39px; top: 3px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--color-gold-500); border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--color-gold-500);
}
.timeline-item .t-year { color: var(--color-gold-600); font-weight: 700; font-size: 13.5px; letter-spacing: .05em; margin-bottom: 4px; }
.timeline-item h4 { font-size: 17px; margin-bottom: 6px; }
.timeline-item p { font-size: 14.5px; color: var(--color-slate-500); margin: 0; }

/* ---------------- Certification / value badges grid ---------------- */
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.value-item { text-align: center; padding: 28px 16px; }
.value-item .v-icon {
  width: 64px; height: 64px; margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-navy-700), var(--color-navy-900));
  color: var(--color-gold-400);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
}
.value-item h4 { font-size: 15.5px; margin-bottom: 8px; }
.value-item p { font-size: 13.3px; color: var(--color-slate-500); margin: 0; }

/* ---------------- CTA banner ---------------- */
.cta-banner {
  background: linear-gradient(120deg, var(--color-navy-950), var(--color-jade) 130%);
  border-radius: 26px;
  padding: 60px;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute; right: -60px; top: -60px;
  width: 260px; height: 260px; border-radius: 50%;
  background: rgba(200,147,63,.16);
}
.cta-banner h2 { color: #fff; margin-bottom: 8px; font-size: 28px; }
.cta-banner p { color: #dbe0e7; margin: 0; max-width: 480px; }
.cta-actions { display: flex; gap: 14px; position: relative; z-index: 2; flex-wrap: wrap; }

/* ---------------- Footer ---------------- */
.site-footer {
  background: var(--color-navy-950);
  color: #b6bdc7;
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .brand-text .name { color: #fff; }
.footer-about { font-size: 14px; margin: 18px 0; color: #9aa3b0; max-width: 300px; }
.footer-social { display: flex; gap: 12px; }
.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;
  color: #fff; transition: all .2s ease;
}
.footer-social a:hover { background: var(--color-gold-500); border-color: var(--color-gold-500); }
.footer-col h4 { color: #fff; font-size: 14.5px; text-transform: uppercase; letter-spacing: .07em; margin-bottom: 18px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 12px; }
.footer-col a { color: #9aa3b0; font-size: 14.3px; transition: color .2s ease; }
.footer-col a:hover { color: var(--color-gold-400); }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: #9aa3b0; }
.footer-contact i { color: var(--color-gold-400); margin-top: 3px; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding: 24px 0; font-size: 13px; color: #7c8492; flex-wrap: wrap; gap: 10px;
}
.footer-bottom a { color: #9aa3b0; }

/* ---------------- Forms ---------------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-field { margin-bottom: 20px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label {
  display: block; font-size: 13.5px; font-weight: 600;
  color: var(--color-navy-800); margin-bottom: 8px;
}
.form-field input, .form-field select, .form-field textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid var(--color-line);
  border-radius: 10px;
  font-family: var(--ff-body);
  font-size: 14.5px;
  background: #fff;
  color: var(--color-slate-700);
  transition: border-color .2s ease;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none;
  border-color: var(--color-navy-600);
}
.form-note { font-size: 12.8px; color: var(--color-slate-500); margin-top: -8px; margin-bottom: 20px; }
.form-success {
  display: none;
  background: rgba(14,102,89,.08);
  border: 1px solid rgba(14,102,89,.3);
  color: var(--color-jade);
  padding: 18px 22px;
  border-radius: 12px;
  margin-bottom: 22px;
  font-size: 14.5px;
}
.form-success.show { display: flex; align-items: center; gap: 10px; }

/* ---------------- Contact info cards ---------------- */
.contact-info-card {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 18px;
}
.contact-info-card .icon-badge { flex-shrink: 0; margin-bottom: 0; }
.contact-info-card h4 { font-size: 15.5px; margin-bottom: 6px; }
.contact-info-card p { font-size: 14.3px; margin: 0; color: var(--color-slate-500); }

/* ---------------- Reveal animation ---------------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.revealed { opacity: 1; transform: translateY(0); }

/* ---------------- Utility ---------------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.gold-text { color: var(--color-gold-600); }
.divider {
  width: 60px; height: 3px;
  background: linear-gradient(90deg, var(--color-gold-500), var(--color-gold-300));
  border-radius: 2px;
  margin: 18px 0;
}
.divider.center { margin-left: auto; margin-right: auto; }
.pattern-strip {
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--color-gold-500) 0 24px, var(--color-navy-800) 24px 48px);
  opacity: .8;
}
.back-to-top {
  position: fixed;
  bottom: 28px; right: 28px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--color-gold-500);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 20px rgba(0,0,0,.25);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: all .3s ease;
  z-index: 900;
  border: none;
  cursor: pointer;
  font-size: 17px;
}
.back-to-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ---------------- Responsive ---------------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-row { grid-template-columns: 1fr; }
  .feature-row.reverse .feature-media, .feature-row.reverse .feature-text { order: unset; }
  .material-body .two-col { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
  .tier-flow { grid-template-columns: 1fr; }
  .morph-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .nav-links, .nav-cta .btn-outline { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: 74px; left: 0; right: 0;
    background: var(--color-navy-950);
    flex-direction: column;
    padding: 20px 28px 28px;
    gap: 18px;
    border-bottom: 1px solid rgba(200,147,63,.25);
  }
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 14px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .cta-banner { flex-direction: column; text-align: center; padding: 40px 26px; }
  .cta-banner p { max-width: 100%; }
  .advantage-strip .container { justify-content: center; text-align: center; }
  .section { padding: 64px 0; }
  .material-body { padding: 28px; }
  .material-head { padding: 28px; }
}

@media (max-width: 600px) {
  .hero { min-height: auto; padding: 130px 0 70px; }
  .hero-stats { grid-template-columns: 1fr 1fr 1fr; }
  .hero-stat .num { font-size: 22px; }
  .container { padding: 0 20px; }
  .value-grid, .footer-grid, .morph-grid, .stat-strip { grid-template-columns: 1fr 1fr; }
  .page-hero { padding: 120px 0 60px; }
}