/* ==========================================================================
   VIGO EXPRESS LIMITED — GLOBAL DESIGN SYSTEM
   Deep matte navy institutional design. Maximalist white space, minimal ornament.
   ========================================================================== */

:root {
  /* Palette */
  --navy: #0a1220;
  --navy-deep: #060b14;
  --graphite: #14171c;
  --graphite-light: #1b1f26;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --white: #ffffff;
  --off-white: #c3c9d4;
  --off-white-dim: #8a92a1;
  --accent-blue: #4fc3e8;
  --accent-steel: #9db8d1;

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

  /* Rhythm */
  --container: 1320px;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --section-pad: clamp(4rem, 10vw, 9rem);

  /* Motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }
ul[class], ol[class] { padding: 0; list-style: none; }
img, picture, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }

body {
  background: var(--navy);
  color: var(--off-white);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  line-height: 1.15;
}
h1 { font-size: clamp(2.2rem, 6vw, 4.6rem); letter-spacing: 0.03em; }
h2 { font-size: clamp(1.6rem, 3.6vw, 2.75rem); }
h3 { font-size: clamp(1.05rem, 1.6vw, 1.35rem); letter-spacing: 0.1em; }
h4 { font-size: 0.95rem; letter-spacing: 0.14em; }

.eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent-blue);
  font-weight: 600;
  margin-bottom: 1.1rem;
}

.lede {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--off-white);
  font-weight: 400;
  line-height: 1.55;
}

p.body-text, .body-text {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--off-white);
  max-width: 62ch;
}

.text-dim { color: var(--off-white-dim); }

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

.section { padding-block: var(--section-pad); position: relative; }
.section--graphite { background: var(--graphite); }
.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }

.hr-line {
  border: none;
  height: 1px;
  background: var(--line);
  margin-block: clamp(2.5rem, 6vw, 4.5rem);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.05rem 2.1rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: 1px solid var(--white);
  color: var(--white);
  background: transparent;
  transition: background 0.4s var(--ease-soft), color 0.4s var(--ease-soft), border-color 0.4s var(--ease-soft), transform 0.3s var(--ease-soft);
  white-space: nowrap;
}
.btn:hover { background: var(--white); color: var(--navy-deep); transform: translateY(-2px); }
.btn:focus-visible { outline: 2px solid var(--accent-blue); outline-offset: 3px; }
.btn svg { width: 14px; height: 14px; transition: transform 0.4s var(--ease-soft); }
.btn:hover svg { transform: translateX(4px); }

.btn--accent { border-color: var(--accent-blue); }
.btn--accent:hover { background: var(--accent-blue); border-color: var(--accent-blue); color: var(--navy-deep); }

.btn--ghost { border-color: var(--line-strong); color: var(--off-white); }
.btn--ghost:hover { border-color: var(--white); background: transparent; color: var(--white); transform: translateY(-2px); }

/* ==========================================================================
   HEADER / NAVIGATION
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  padding-block: 1.35rem;
  transition: background 0.45s var(--ease-soft), padding 0.45s var(--ease-soft), border-color 0.45s var(--ease-soft), backdrop-filter 0.45s var(--ease-soft);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(9, 15, 27, 0.86);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  padding-block: 0.9rem;
  border-color: var(--line);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--white);
  z-index: 620;
  position: relative;
}
.brand-mark {
  width: 30px; height: 30px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
}
.brand-mark svg { width: 100%; height: 100%; }
.brand small {
  display: block;
  font-size: 0.55rem;
  letter-spacing: 0.24em;
  color: var(--off-white-dim);
  font-weight: 500;
  margin-top: 0.15rem;
}

.main-nav { display: none; }
@media (min-width: 980px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: clamp(1.6rem, 3vw, 2.75rem);
  }
  .main-nav a {
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--off-white);
    position: relative;
    padding-block: 0.4rem;
    transition: color 0.3s var(--ease-soft);
  }
  .main-nav a::after {
    content: "";
    position: absolute;
    left: 0; right: 100%; bottom: 0;
    height: 1px;
    background: var(--accent-blue);
    transition: right 0.35s var(--ease);
  }
  .main-nav a:hover { color: var(--white); }
  .main-nav a:hover::after, .main-nav a.is-active::after { right: 0; }
  .main-nav a.is-active { color: var(--white); }
  .main-nav .btn { margin-left: 0.5rem; padding: 0.85rem 1.5rem; }
}

/* ---------- Hamburger (mobile) ---------- */
.hamburger {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  z-index: 620;
  position: relative;
  border: 1px solid var(--line-strong);
}
@media (min-width: 980px) { .hamburger { display: none; } }

.hamburger .bars {
  position: relative;
  width: 20px;
  height: 14px;
}
.hamburger .bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--white);
  transition: transform 0.4s var(--ease-soft), opacity 0.3s var(--ease-soft), top 0.4s var(--ease-soft), width 0.3s var(--ease-soft);
}
.hamburger .bars span:nth-child(1) { top: 0; }
.hamburger .bars span:nth-child(2) { top: 6px; width: 70%; }
.hamburger .bars span:nth-child(3) { top: 12px; }

.nav-open .hamburger .bars span:nth-child(1) { top: 6px; transform: rotate(45deg); }
.nav-open .hamburger .bars span:nth-child(2) { opacity: 0; }
.nav-open .hamburger .bars span:nth-child(3) { top: 6px; transform: rotate(-45deg); width: 100%; }

/* ---------- Mobile nav overlay ---------- */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 600;
  background: var(--navy-deep);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 7rem var(--gutter) 3rem;
  clip-path: circle(0px at calc(100% - 2.6rem) 2.6rem);
  transition: clip-path 0.7s var(--ease);
  pointer-events: none;
}
.nav-open .mobile-nav {
  clip-path: circle(150% at calc(100% - 2.6rem) 2.6rem);
  pointer-events: auto;
}
.mobile-nav::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: 0.25;
  mask-image: radial-gradient(circle at 80% 20%, black, transparent 70%);
}
.mobile-nav-list {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.mobile-nav-list li { overflow: hidden; }
.mobile-nav-list a {
  display: block;
  font-size: clamp(1.9rem, 9vw, 3rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--white);
  padding-block: 0.3rem;
  transform: translateY(110%);
  transition: transform 0.6s var(--ease), color 0.3s;
  border-bottom: 1px solid var(--line);
}
.nav-open .mobile-nav-list a { transform: translateY(0); }
.mobile-nav-list a span { display: inline-flex; align-items: baseline; gap: 0.9rem; }
.mobile-nav-list a .idx { font-size: 0.9rem; color: var(--accent-blue); letter-spacing: 0.1em; }
.mobile-nav-list a:active, .mobile-nav-list a:hover { color: var(--accent-blue); }

.mobile-nav-foot {
  position: relative;
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease) 0.5s, transform 0.6s var(--ease) 0.5s;
}
.nav-open .mobile-nav-foot { opacity: 1; transform: translateY(0); }
.mobile-nav-foot a { font-size: 0.85rem; color: var(--off-white-dim); letter-spacing: 0.05em; }

body.nav-open { overflow: hidden; }

/* ==========================================================================
   HOME — INTRO PRELOADER (machines sequence)
   ========================================================================== */
.intro-loader {
  position: fixed;
  inset: 0;
  z-index: 900;
  background: var(--navy-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.9s var(--ease-soft), visibility 0.9s;
}
.intro-loader.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.intro-loader::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.35;
  mask-image: radial-gradient(circle at 50% 50%, black, transparent 75%);
}

.intro-stage {
  position: relative;
  width: min(620px, 90vw);
  height: min(620px, 78vh);
}
.intro-frame {
  position: absolute;
  inset: 0;
  padding: 3.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.92);
  filter: blur(6px);
  transition: opacity 1.1s var(--ease-soft), transform 1.5s var(--ease-soft), filter 1.1s var(--ease-soft);
}
.intro-frame img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(0.25) brightness(1.05) contrast(1.05);
}
.intro-frame.is-active {
  opacity: 1;
  transform: scale(1);
  filter: blur(0);
}

.intro-caption {
  position: absolute;
  left: 50%;
  bottom: -3.4rem;
  transform: translateX(-50%);
  text-align: center;
  width: max-content;
}
.intro-caption span {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--off-white-dim);
  opacity: 0;
  transition: opacity 0.5s var(--ease-soft);
}
.intro-caption span.is-active { opacity: 1; color: var(--accent-blue); }

.intro-progress {
  position: absolute;
  bottom: -5.4rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
}
.intro-progress i {
  width: 22px; height: 2px;
  background: var(--line-strong);
  position: relative;
  overflow: hidden;
}
.intro-progress i::after {
  content: "";
  position: absolute; inset: 0;
  background: var(--accent-blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1.7s linear;
}
.intro-progress i.is-active::after { transform: scaleX(1); }
.intro-progress i.is-done::after { transform: scaleX(1); background: var(--white); }

/* ==========================================================================
   HOME — HERO
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--navy-deep);
}
.hero-media {
  position: absolute;
  inset: 0;
  transform: scale(1.28);
  opacity: 0;
  transition: transform 2.6s var(--ease), opacity 1.6s var(--ease-soft);
}
.hero.is-revealed .hero-media { transform: scale(1); opacity: 1; }
.hero-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 30%;
  filter: grayscale(0.55) brightness(0.5) contrast(1.15);
}
.hero-media::after {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(6,11,20,0.35) 0%, rgba(6,11,20,0.55) 55%, rgba(6,11,20,0.96) 100%),
    linear-gradient(90deg, rgba(6,11,20,0.55) 0%, rgba(6,11,20,0.1) 40%, rgba(6,11,20,0.1) 60%, rgba(6,11,20,0.55) 100%);
}

.hero-content {
  position: relative;
  z-index: 5;
  width: 100%;
  padding-bottom: clamp(7rem, 11vh, 8rem);
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1.1s var(--ease-soft) 0.35s, transform 1.1s var(--ease) 0.35s;
}
.hero.is-revealed .hero-content { opacity: 1; transform: translateY(0); }

.hero-content h1 {
  max-width: 16ch;
  font-size: clamp(2.3rem, 6.4vw, 5rem);
}
.hero-content .lede {
  margin-top: 1.6rem;
  max-width: 46ch;
}
.hero-actions {
  margin-top: 2.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  align-items: center;
}

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 2.2rem;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  z-index: 6;
  opacity: 0;
  transition: opacity 1s var(--ease-soft) 1.4s;
}
.hero.is-revealed .scroll-cue { opacity: 1; }
.scroll-cue span {
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--off-white-dim);
}
.scroll-cue .line {
  width: 1px; height: 34px;
  background: linear-gradient(var(--off-white-dim), transparent);
  position: relative;
  overflow: hidden;
}
@media (max-width: 640px) {
  .scroll-cue { bottom: 1.5rem; gap: 0.45rem; }
  .scroll-cue .line { height: 24px; }
}
.scroll-cue .line::after {
  content: "";
  position: absolute;
  top: -100%; left: 0; right: 0;
  height: 100%;
  background: linear-gradient(var(--accent-blue), transparent);
  animation: scrollDrop 2.2s var(--ease-soft) infinite;
}
@keyframes scrollDrop {
  0% { top: -100%; }
  60%, 100% { top: 100%; }
}

/* ==========================================================================
   SCROLL REVEAL UTILITIES
   ========================================================================== */
[data-reveal] {
  opacity: 0;
  transition: opacity 0.9s var(--ease-soft), transform 0.9s var(--ease);
}
[data-reveal="fade"] { transform: translateY(0); }
[data-reveal="up"] { transform: translateY(38px); }
[data-reveal="left"] { transform: translateX(64px); }
[data-reveal="right"] { transform: translateX(-64px); }
[data-reveal].is-visible { opacity: 1; transform: translate(0, 0); }

/* stagger children via inline --d custom property set by JS or nth-child fallback */
[data-reveal] { transition-delay: var(--d, 0s); }

/* ==========================================================================
   SECTION: INSTITUTIONAL BRIEF (asymmetric two column)
   ========================================================================== */
.brief-grid {
  display: grid;
  gap: clamp(2.5rem, 6vw, 4rem);
  grid-template-columns: 1fr;
}
@media (min-width: 860px) {
  .brief-grid { grid-template-columns: 0.85fr 1.15fr; gap: clamp(3rem, 8vw, 7rem); }
}
.brief-grid h2 { max-width: 11ch; }

/* ==========================================================================
   SECTION: SERVICE TILES (3 columns, typography-led)
   ========================================================================== */
.tiles-head {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: clamp(3rem, 7vw, 5rem);
}
.tiles-head h2 { max-width: 20ch; }

.tiles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}
@media (min-width: 860px) {
  .tiles { grid-template-columns: repeat(3, 1fr); }
}
.tile {
  padding: clamp(2rem, 4vw, 3rem) clamp(1rem, 2.5vw, 2rem);
  border-bottom: 1px solid var(--line);
  position: relative;
}
@media (min-width: 860px) {
  .tile { border-right: 1px solid var(--line); }
  .tile:last-child { border-right: none; }
}
.tile .num {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--accent-blue);
  font-weight: 600;
  margin-bottom: 1.6rem;
  display: block;
}
.tile h3 { margin-bottom: 1.1rem; }
.tile p { font-size: 0.94rem; color: var(--off-white-dim); line-height: 1.7; }

.tiles-cta {
  display: flex;
  justify-content: center;
  margin-top: clamp(3rem, 6vw, 4.5rem);
}

/* ==========================================================================
   SECTION: PARTNERSHIPS STRIP (full width, graphite)
   ========================================================================== */
.partners-strip { text-align: center; }
.partners-strip h2 {
  max-width: 26ch;
  margin-inline: auto;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
  font-size: clamp(1.15rem, 2.4vw, 1.7rem);
}
.partners-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-items: center;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}
@media (min-width: 720px) {
  .partners-row { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1020px) {
  .partners-row { grid-template-columns: repeat(5, 1fr); }
}
.partners-row img {
  width: 100%;
  height: 380px;
  object-fit: contain;
  filter: grayscale(1) brightness(1.6) contrast(0.9);
  opacity: 0.72;
  transition: opacity 0.4s var(--ease-soft), filter 0.4s var(--ease-soft);
}
.partners-row a:hover img,
.partners-row img:hover { opacity: 1; filter: grayscale(0.15) brightness(1.05); }

/* ==========================================================================
   PAGE HERO (inner pages banner)
   ========================================================================== */
.page-hero {
  position: relative;
  padding-top: clamp(9rem, 18vh, 12rem);
  padding-bottom: clamp(4rem, 9vh, 6rem);
  overflow: hidden;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-hero-bg img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(0.7) brightness(0.32) contrast(1.1);
}
.page-hero-bg::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(6,11,20,0.55), var(--navy) 96%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { max-width: 22ch; }
.page-hero .lede { margin-top: 1.4rem; max-width: 50ch; }

/* ==========================================================================
   TWO COLUMN CONTENT (About philosophy, etc.)
   ========================================================================== */
.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 3rem);
}
@media (min-width: 860px) {
  .split { grid-template-columns: 0.7fr 1.3fr; gap: clamp(3rem, 7vw, 6rem); }
  .split h2 { position: sticky; top: 8rem; }
}
.split h2 { max-width: 12ch; }
.split-blocks { display: flex; flex-direction: column; gap: clamp(2rem, 5vw, 3rem); }
.split-blocks p + p { margin-top: 1rem; }

/* ESG key points row */
.points-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 2.5rem);
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
}
@media (min-width: 720px) {
  .points-row { grid-template-columns: repeat(2, 1fr); }
}
.point h4 { color: var(--accent-steel); margin-bottom: 0.9rem; }
.point p { color: var(--off-white); font-size: 0.96rem; }

/* ==========================================================================
   SERVICES PAGE — practice blocks with image
   ========================================================================== */
.practice-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2.2rem, 5vw, 3rem);
  align-items: center;
  padding-block: clamp(3rem, 7vw, 5.5rem);
}
@media (min-width: 900px) {
  .practice-block { grid-template-columns: 1.1fr 0.9fr; }
  .practice-block.is-reversed { grid-template-columns: 0.9fr 1.1fr; }
  .practice-block.is-reversed .practice-media { order: -1; }
}
.practice-media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 3vw, 2rem);
}
.practice-media img {
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 460px;
  object-fit: contain;
  filter: drop-shadow(0 35px 55px rgba(0,0,0,0.5));
}
.practice-media--lg img { max-height: 560px; }
@media (min-width: 1180px) {
  .practice-media img { max-height: 520px; }
  .practice-media--lg img { max-height: 640px; }
}
.practice-title {
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  color: var(--accent-blue);
  margin-bottom: 1rem;
  font-weight: 700;
}
.practice-block h3.h2-size { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: 1.2rem; max-width: 18ch; }

.feature-list { margin-top: 1.8rem; display: flex; flex-direction: column; gap: 1.3rem; }
.feature-list .f-title { color: var(--white); font-weight: 600; font-size: 0.95rem; letter-spacing: 0.02em; margin-bottom: 0.3rem; }
.feature-list .f-body { font-size: 0.92rem; color: var(--off-white-dim); }

.check-list { display: flex; flex-direction: column; gap: 1rem; margin-top: 1.8rem; }
.check-list li { display: flex; gap: 0.9rem; font-size: 0.94rem; color: var(--off-white); }
.check-list li::before {
  content: "";
  flex-shrink: 0;
  width: 6px; height: 6px;
  margin-top: 0.55rem;
  background: var(--accent-blue);
  transform: rotate(45deg);
}

/* ==========================================================================
   DIGITAL STACK — 4 tiles
   ========================================================================== */
.stack-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
@media (min-width: 640px) {
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1080px) {
  .stack-grid { grid-template-columns: repeat(4, 1fr); }
}
.stack-tile {
  padding: clamp(2rem, 3vw, 2.5rem) clamp(1.4rem, 2vw, 1.8rem);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background 0.4s var(--ease-soft);
}
.stack-tile:hover { background: rgba(255,255,255,0.02); }
.stack-tile .stack-index { font-size: 0.68rem; color: var(--off-white-dim); letter-spacing: 0.2em; }
.stack-tile h3 { margin-top: 1.4rem; margin-bottom: 1rem; font-size: 1rem; }
.stack-tile p { font-size: 0.88rem; color: var(--off-white-dim); }

.compliance-note {
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
  padding: clamp(1.5rem, 3vw, 2rem);
  border-left: 2px solid var(--accent-steel);
  background: rgba(157, 184, 209, 0.06);
}
.compliance-note h4 { color: var(--accent-steel); margin-bottom: 0.7rem; }

/* ==========================================================================
   CONTACT PAGE
   ========================================================================== */
.contact-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(3rem, 6vw, 5rem);
}
@media (min-width: 940px) {
  .contact-split { grid-template-columns: 1fr 1fr; }
}
.contact-info dl { display: flex; flex-direction: column; gap: 1.8rem; margin-top: 2.2rem; }
.contact-info dt { font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--off-white-dim); margin-bottom: 0.4rem; }
.contact-info dd { font-size: 1.05rem; color: var(--white); font-weight: 500; }
.contact-info dd a:hover { color: var(--accent-blue); }

.field { position: relative; margin-bottom: 1.9rem; }
.field label {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--off-white-dim);
  margin-bottom: 0.6rem;
}
.field label .req { color: var(--accent-blue); }
.field input, .field select, .field textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line-strong);
  padding: 0.7rem 0.1rem;
  color: var(--white);
  font-size: 1rem;
  transition: border-color 0.35s var(--ease-soft);
}
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
}
.field select { appearance: none; -webkit-appearance: none; cursor: pointer; }
.field select option { background: var(--navy); color: var(--white); }
.select-wrap { position: relative; }
.select-wrap::after {
  content: "";
  position: absolute;
  right: 0.2rem; top: 50%;
  width: 8px; height: 8px;
  border-right: 1px solid var(--off-white-dim);
  border-bottom: 1px solid var(--off-white-dim);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}
.field input::placeholder, .field textarea::placeholder { color: var(--off-white-dim); opacity: 0.5; }

.form-status {
  margin-top: 1.2rem;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  min-height: 1.4em;
}
.form-status[data-state="success"] { color: var(--accent-steel); }
.form-status[data-state="error"] { color: #ff8c7a; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: clamp(2rem, 4vw, 2.6rem);
  background: var(--navy-deep);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  color: var(--off-white-dim);
}
@media (min-width: 860px) {
  .footer-inner { flex-direction: row; align-items: center; justify-content: space-between; gap: 1.5rem; }
}
.footer-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.4rem; }
.footer-links a:hover { color: var(--off-white); }
.footer-right { text-align: left; }
@media (min-width: 860px) { .footer-right { text-align: right; } }

/* ==========================================================================
   LEGAL PAGES
   ========================================================================== */
.legal-body { max-width: 74ch; }
.legal-body h2 { font-size: 1.15rem; margin-top: 3rem; margin-bottom: 1rem; }
.legal-body h2:first-child { margin-top: 0; }
.legal-body p { color: var(--off-white); font-size: 0.98rem; line-height: 1.8; margin-bottom: 1.1rem; }
.legal-list { display: flex; flex-direction: column; gap: 1.4rem; margin-top: 1.5rem; }
.legal-list .li-title { color: var(--white); font-weight: 600; margin-bottom: 0.3rem; font-size: 0.98rem; }
.legal-list .li-body { color: var(--off-white-dim); font-size: 0.95rem; }

/* ==========================================================================
   MISC UTILITIES
   ========================================================================== */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--white);
  color: var(--navy-deep);
  padding: 1rem 1.4rem;
  z-index: 1000;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}
.skip-link:focus { left: 1rem; top: 1rem; }

::selection { background: var(--accent-blue); color: var(--navy-deep); }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--navy-deep); }
::-webkit-scrollbar-thumb { background: var(--graphite-light); border: 2px solid var(--navy-deep); }

/* focus ring accessibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 3px;
}

/* ==========================================================================
   BACK TO TOP (mobile)
   ========================================================================== */
.to-top {
  position: fixed;
  right: calc(1.1rem + env(safe-area-inset-right, 0px));
  bottom: calc(1.1rem + env(safe-area-inset-bottom, 0px));
  width: 46px;
  height: 46px;
  z-index: 450;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(9, 15, 27, 0.88);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid var(--line-strong);
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  transition: opacity 0.4s var(--ease-soft), transform 0.4s var(--ease-soft), border-color 0.3s var(--ease-soft);
}
.to-top.is-visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.to-top:hover, .to-top:focus-visible { border-color: var(--accent-blue); }
.to-top svg { width: 16px; height: 16px; color: var(--white); }
@media (min-width: 980px) { .to-top { display: none; } }