/* =============================================================
   SPACE INVENTIVE — BRAND.CSS
   Brand Design System v1 (Phase 1)
   Last updated: 2026-04-27 (Chat #C003)
   Decision: #D004
   ============================================================= */

:root {
  /* ------- BRAND COLORS (from logo) ------- */
  --si-orange-bright: #E07A1A;
  --si-orange-soft:   #F5B560;
  --si-navy:          #1F4863;
  --si-navy-deep:     #163349;
  --si-steel:         #5C7E96;
  --si-sky:           #9BB7C7;
  --si-mist:          #D8E4EC;
  --si-cream:         #FAF7F2;
  --si-charcoal:      #1A2530;

  /* ------- ESG / CARBON ACCENTS ------- */
  --si-eco-green:     #1F8A5C;
  --si-leaf:          #3FB87A;
  --si-leaf-soft:     #DCF1E5;
  --si-warning:       #F59F0A;
  --si-danger:        #E04B4B;

  /* ------- SEMANTIC TOKENS ------- */
  --color-bg:           var(--si-cream);
  --color-bg-alt:       #FFFFFF;
  --color-bg-dark:      var(--si-navy);
  --color-bg-mist:      var(--si-mist);

  --color-text:         var(--si-charcoal);
  --color-text-muted:   var(--si-steel);
  --color-text-invert:  #FFFFFF;
  --color-link:         var(--si-orange-bright);
  --color-link-hover:   var(--si-navy);

  --color-border:       rgba(31, 72, 99, 0.12);
  --color-border-soft:  rgba(31, 72, 99, 0.06);

  --color-accent:       var(--si-orange-bright);
  --color-accent-soft:  var(--si-orange-soft);
  --color-success:      var(--si-eco-green);

  /* ------- TYPOGRAPHY ------- */
  --font-heading-en: "Space Grotesk", "Manrope", system-ui, sans-serif;
  --font-heading-th: "IBM Plex Sans Thai", "Noto Sans Thai", system-ui, sans-serif;
  --font-heading-zh: "Noto Sans SC", system-ui, sans-serif;
  --font-body-en:    "Inter", system-ui, sans-serif;
  --font-body-th:    "IBM Plex Sans Thai", system-ui, sans-serif;
  --font-body-zh:    "Noto Sans SC", system-ui, sans-serif;
  --font-mono:       "JetBrains Mono", ui-monospace, monospace;

  /* ------- TYPE SCALE ------- */
  --fs-xs:   0.75rem;     /* 12 */
  --fs-sm:   0.875rem;    /* 14 */
  --fs-base: 1rem;        /* 16 */
  --fs-md:   1.125rem;    /* 18 */
  --fs-lg:   1.375rem;    /* 22 */
  --fs-xl:   1.75rem;     /* 28 */
  --fs-2xl:  2.25rem;     /* 36 */
  --fs-3xl:  3rem;        /* 48 */
  --fs-4xl:  4rem;        /* 64 */
  --fs-5xl:  5.5rem;      /* 88 — hero */

  --lh-tight:  1.15;
  --lh-snug:   1.3;
  --lh-normal: 1.55;
  --lh-loose:  1.75;

  --fw-light:    300;
  --fw-regular:  400;
  --fw-medium:   500;
  --fw-semibold: 600;
  --fw-bold:     700;

  /* ------- SPACING ------- */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;
  --sp-32: 8rem;

  /* ------- LAYOUT ------- */
  --container-narrow: 64rem;
  --container-base:   76rem;
  --container-wide:   88rem;
  --container-full:   100%;

  --radius-sm:  0.25rem;
  --radius-md:  0.5rem;
  --radius-lg:  0.875rem;
  --radius-xl:  1.25rem;
  --radius-pill: 999px;

  /* ------- SHADOWS ------- */
  --shadow-xs: 0 1px 2px rgba(31, 72, 99, 0.05);
  --shadow-sm: 0 2px 6px rgba(31, 72, 99, 0.06), 0 1px 3px rgba(31, 72, 99, 0.04);
  --shadow-md: 0 8px 18px rgba(31, 72, 99, 0.08), 0 2px 4px rgba(31, 72, 99, 0.04);
  --shadow-lg: 0 18px 40px rgba(31, 72, 99, 0.12), 0 4px 12px rgba(31, 72, 99, 0.06);
  --shadow-xl: 0 30px 70px rgba(31, 72, 99, 0.18);
  --shadow-glow-orange: 0 0 0 6px rgba(224, 122, 26, 0.18);
  --shadow-glow-green:  0 0 0 6px rgba(31, 138, 92, 0.18);

  /* ------- MOTION ------- */
  --ease-out:    cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast:    150ms;
  --dur-base:    250ms;
  --dur-slow:    450ms;
  --dur-grand:   800ms;

  /* ------- HEADER ------- */
  --header-h:    88px;           /* #C027 — slim header, fits 72px logo + breathing room */
  --header-h-sm: 70px;
  --z-header:    50;
  --z-modal:     90;
  --z-toast:     100;
}

/* =============================================================
   RESET / BASE
   ============================================================= */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body-en);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

html[lang="th"] body { font-family: var(--font-body-th); }
html[lang="zh"] body { font-family: var(--font-body-zh); }

img, video, svg { display: block; max-width: 100%; height: auto; }
button { font: inherit; cursor: pointer; background: none; border: none; color: inherit; }
a { color: var(--color-link); text-decoration: none; transition: color var(--dur-fast) var(--ease-out); }
a:hover { color: var(--color-link-hover); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading-en);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  letter-spacing: -0.015em;
  color: var(--si-navy);
}
html[lang="th"] :is(h1,h2,h3,h4,h5,h6) { font-family: var(--font-heading-th); }
html[lang="zh"] :is(h1,h2,h3,h4,h5,h6) { font-family: var(--font-heading-zh); }

h1 { font-size: clamp(var(--fs-2xl), 5vw, var(--fs-4xl)); }
h2 { font-size: clamp(var(--fs-xl), 4vw, var(--fs-3xl)); }
h3 { font-size: clamp(var(--fs-lg), 3vw, var(--fs-xl)); }
h4 { font-size: var(--fs-md); }

::selection { background: var(--si-orange-soft); color: var(--si-navy-deep); }

/* =============================================================
   LAYOUT UTILITIES
   ============================================================= */

.container        { max-width: var(--container-base);  margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2rem); }
.container-narrow { max-width: var(--container-narrow);margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2rem); }
.container-wide   { max-width: var(--container-wide);  margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2rem); }

.section        { padding: clamp(3rem, 8vw, 6rem) 0; }
.section-tight  { padding: clamp(2rem, 5vw, 3.5rem) 0; }
.section-grand  { padding: clamp(4rem, 12vw, 8rem) 0; }
.section-dark   { background: var(--si-navy); color: var(--color-text-invert); }
.section-dark :is(h1,h2,h3,h4) { color: var(--color-text-invert); }
.section-mist   { background: linear-gradient(180deg, var(--si-cream) 0%, var(--si-mist) 100%); }
.section-cream  { background: var(--si-cream); }

/* =============================================================
   BUTTONS
   ============================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.875rem 1.5rem;
  font-family: var(--font-heading-en);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border-radius: var(--radius-pill);
  transition: all var(--dur-base) var(--ease-out);
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--si-orange-bright);
  color: #FFF;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover {
  background: var(--si-navy);
  color: #FFF;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--si-navy);
  border-color: var(--si-navy);
}
.btn-secondary:hover {
  background: var(--si-navy);
  color: #FFF;
}

.btn-ghost {
  color: var(--color-text-invert);
  border-color: rgba(255,255,255,0.4);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: #FFF;
}

.btn-link {
  padding: 0;
  color: var(--si-orange-bright);
  background: transparent;
  text-transform: none;
  letter-spacing: 0;
}
.btn-link::after {
  content: " →";
  transition: transform var(--dur-fast) var(--ease-out);
  display: inline-block;
}
.btn-link:hover::after { transform: translateX(4px); }

/* =============================================================
   COMPONENTS — CARDS / TAGS / TICKER
   ============================================================= */

.card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  transition: transform var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--si-orange-soft);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.25rem 0.75rem;
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  border-radius: var(--radius-pill);
  background: var(--si-mist);
  color: var(--si-navy);
}
.tag-eco    { background: var(--si-leaf-soft); color: var(--si-eco-green); }
.tag-orange { background: rgba(224, 122, 26, 0.12); color: var(--si-orange-bright); }
.tag-navy   { background: var(--si-navy); color: #FFF; }

.ticker-bar {
  background: var(--si-navy-deep);
  color: var(--color-text-invert);
  padding: 0.625rem 0;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  overflow: hidden;
  position: relative;
  border-top: 1px solid rgba(255,255,255,0.1);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.ticker-track {
  display: inline-flex;
  white-space: nowrap;
  animation: ticker-scroll 60s linear infinite;
}
.ticker-item {
  padding: 0 var(--sp-8);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  border-right: 1px solid rgba(255,255,255,0.12);
}
.ticker-up   { color: var(--si-leaf); }
.ticker-down { color: var(--si-danger); }

@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* =============================================================
   HERO
   ============================================================= */

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--si-navy-deep) 0%, var(--si-navy) 60%, #0E1F2D 100%);
}

.hero-video,
.hero-poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.hero-video {
  opacity: 0.92;                  /* was 0.55 — much more visible */
  filter: saturate(1.08) contrast(1.04);
  animation: hero-kenburns 24s var(--ease-in-out) infinite alternate;
  will-change: transform;
}
@keyframes hero-kenburns {
  0%   { transform: scale(1.02) translate3d(0, 0, 0); }
  100% { transform: scale(1.10) translate3d(-1.5%, -1%, 0); }
}

/* Cinematic readability overlay — left side darker (text area), right side clearer (video shows) */
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    /* TOP SCRIM — protects header/menu text on bright videos (#C020) */
    linear-gradient(180deg,
      rgba(11,28,40,0.72) 0%,
      rgba(11,28,40,0.42) 8%,
      rgba(11,28,40,0.18) 16%,
      transparent 24%),
    /* Left-side text gradient — dark only behind text */
    linear-gradient(95deg,
      rgba(11,28,40,0.78) 0%,
      rgba(11,28,40,0.55) 35%,
      rgba(11,28,40,0.18) 60%,
      rgba(11,28,40,0.05) 100%),
    /* Subtle bottom gradient for ticker readability */
    linear-gradient(180deg,
      transparent 60%,
      rgba(11,28,40,0.55) 100%),
    /* Vignette corners (cinematic) */
    radial-gradient(ellipse at center,
      transparent 50%,
      rgba(11,28,40,0.4) 100%);
}
@media (max-width: 960px) {
  /* On mobile, the split collapses — use a stronger uniform overlay so text stays readable */
  .hero-overlay {
    background:
      linear-gradient(180deg,
        rgba(11,28,40,0.78) 0%,
        rgba(11,28,40,0.55) 25%,
        rgba(11,28,40,0.55) 60%,
        rgba(11,28,40,0.85) 100%);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  color: #FFF;
  /* #C023 — Eyebrow lifted up, more breathing room from h1 */
  padding: calc(var(--header-h) + 36px) 0 calc(var(--sp-12) + 56px);
}
@media (max-width: 600px) {
  .hero-content { padding: calc(var(--header-h-sm) + 28px) 0 calc(var(--sp-8) + 56px); }
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.4rem 1rem;
  margin-bottom: 1.5rem;        /* #C023 — push h1 down so eyebrow sits midway between header logo and title */
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--si-orange-soft);
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(10px);
}
.hero h1 {
  color: #FFF;
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  font-weight: var(--fw-bold);
  letter-spacing: -0.025em;
  margin: 0 0 var(--sp-5);       /* #C023 — top margin removed; spacing handled by hero-eyebrow margin-bottom */
  text-shadow:
    0 2px 24px rgba(0,0,0,0.45),
    0 1px 2px rgba(0,0,0,0.55);
  text-wrap: balance;
}
/* #C020 — keep "Where Thai Green" / "Meets Global Markets." each on one line on desktop */
@media (min-width: 720px) {
  .hero h1 > span { white-space: nowrap; display: inline-block; }
}
.hero h1 .accent {
  color: var(--si-orange-soft);
  text-shadow: 0 2px 24px rgba(224, 122, 26, 0.4), 0 1px 2px rgba(0,0,0,0.55);
}
.hero p.lead {
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  color: rgba(255,255,255,0.95);
  max-width: 38rem;
  margin-bottom: var(--sp-8);
  text-shadow: 0 1px 12px rgba(0,0,0,0.55);
}

/* Tone down triangles when video is bright */
.hero .tri-motif { opacity: 0.10; }

/* Scroll indicator — cinematic detail */
.hero::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 70px;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 2px solid rgba(255,255,255,0.6);
  border-radius: 14px;
  z-index: 4;
  pointer-events: none;
  animation: hero-scroll-fade 3s ease-in-out infinite;
}
.hero::before {
  content: "";
  position: absolute;
  left: 50%; bottom: 96px;
  transform: translateX(-50%);
  width: 4px; height: 8px;
  background: rgba(255,255,255,0.85);
  border-radius: 2px;
  z-index: 4;
  pointer-events: none;
  animation: hero-scroll-dot 1.6s ease-in-out infinite;
}
@keyframes hero-scroll-dot {
  0%   { transform: translate(-50%, 0);    opacity: 1; }
  60%  { transform: translate(-50%, 14px); opacity: 0; }
  100% { transform: translate(-50%, 14px); opacity: 0; }
}
@keyframes hero-scroll-fade {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 0.95; }
}
@media (max-width: 720px) {
  .hero::before, .hero::after { display: none; }
}

/* =============================================================
   HEADER / NAV
   ============================================================= */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-header);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--dur-base) var(--ease-out);
}
/* Transparent header on hero — subtle dark gradient + frosted blur + text-shadow
   ensures menu stays readable even on bright/white videos (#C020) */
.site-header.is-transparent {
  background: linear-gradient(180deg,
    rgba(11,28,40,0.55) 0%,
    rgba(11,28,40,0.30) 60%,
    rgba(11,28,40,0.05) 100%);
  backdrop-filter: blur(8px) saturate(1.1);
  -webkit-backdrop-filter: blur(8px) saturate(1.1);
  border-bottom-color: transparent;
}
.site-header.is-transparent :is(.nav-link, .lang-trigger) {
  color: #FFF;
  text-shadow: 0 1px 2px rgba(0,0,0,0.55), 0 0 8px rgba(0,0,0,0.35);
}
.site-header.is-transparent .logo-text {
  color: #FFF;
  text-shadow: 0 1px 4px rgba(0,0,0,0.65), 0 0 12px rgba(0,0,0,0.4);
}
.site-header.is-transparent .logo-sub  {
  color: rgba(245, 181, 96, 0.98);
  text-shadow: 0 1px 3px rgba(0,0,0,0.6);
}
.site-header.is-transparent .brand-lockup img {
  filter: drop-shadow(0 2px 12px rgba(0,0,0,0.65));
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: var(--sp-8);
}
.brand-lockup {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
  transition: transform var(--dur-fast) var(--ease-out);
}
.brand-lockup:hover { transform: scale(1.02); }
.brand-lockup img {
  height: 72px;                  /* #C027 — even smaller to fully clear nav */
  width: auto;
  filter: drop-shadow(0 4px 12px rgba(31, 72, 99, 0.22));
}
.logo-text {
  display: block;
  font-family: var(--font-heading-en);
  font-weight: var(--fw-bold);
  font-size: 1.25rem;            /* #C027 — proportional to 72px logo */
  letter-spacing: 0.04em;
  line-height: 1.0;
  color: var(--si-navy);
  white-space: nowrap;
}
/* Thai/Chinese variants */
html[lang="th"] .logo-text { font-size: 1.05rem; letter-spacing: 0.02em; }
html[lang="zh"] .logo-text { font-size: 1.15rem; letter-spacing: 0.05em; }
.logo-sub {
  display: block;
  font-size: 0.7rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.16em;
  color: var(--si-steel);
  text-transform: uppercase;
  margin-top: 0.3rem;
  white-space: nowrap;
}

@media (max-width: 960px) {
  .brand-lockup img { height: 78px; }
  .logo-text       { font-size: 1.35rem; }
  html[lang="th"] .logo-text { font-size: 1.15rem; }
  html[lang="zh"] .logo-text { font-size: 1.25rem; }
  .logo-sub        { font-size: 0.62rem; }
}
@media (max-width: 600px) {
  .brand-lockup img { height: 64px; }
  .logo-text { font-size: 1.1rem; }
  html[lang="th"] .logo-text { font-size: 0.95rem; }
  html[lang="zh"] .logo-text { font-size: 1rem; }
  .logo-sub  { display: none; }
}

@media (max-width: 1024px) {
  .header-inner { flex-wrap: wrap; gap: 1rem; row-gap: .75rem; }
  .nav-list { gap: 1rem; flex-wrap: wrap; justify-content: center; }
  .nav-link { font-size: .85rem; }
  nav[aria-label="Primary"] { width: 100%; order: 3; }
  .brand-lockup { order: 1; }
  .header-tools { order: 2; margin-left: auto; }
}
@media (max-width: 760px) {
  .header-inner { padding-top: .75rem; padding-bottom: .75rem; }
  .nav-list { gap: .75rem; font-size: .8rem; overflow-x: auto; flex-wrap: nowrap; padding-bottom: .25rem; -webkit-overflow-scrolling: touch; }
  .nav-list::-webkit-scrollbar { display: none; }
  .nav-link { font-size: .8rem; padding: .35rem .4rem; }
  .header-tools .btn { padding: .5rem .85rem; font-size: .8rem; }
  .header-tools .lang-trigger { padding: .35rem .55rem; }
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--sp-8);
  align-items: center;
}
.nav-link {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--si-navy);
  position: relative;
  padding: 0.25rem 0;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: color var(--dur-fast) var(--ease-out);
}
html[lang="th"] .nav-link { letter-spacing: 0; line-height: 1.2; }
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: var(--si-orange-bright);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}
.nav-link:hover::after,
.nav-link.is-active::after { transform: scaleX(1); }

.header-tools {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.lang-switcher { position: relative; }
.lang-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.8rem;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  color: var(--si-navy);
  background: rgba(255,255,255,0.6);
  transition: all var(--dur-fast) var(--ease-out);
}
.lang-trigger:hover { border-color: var(--si-orange-bright); }

.lang-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: #FFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.4rem;
  display: none;
  min-width: 140px;
  z-index: 60;
}
.lang-menu.is-open { display: block; }
.lang-option {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: var(--fs-sm);
  border-radius: var(--radius-sm);
  color: var(--si-navy);
}
.lang-option:hover { background: var(--si-mist); }
.lang-option[aria-current="true"] { background: var(--si-mist); font-weight: var(--fw-semibold); }

.menu-toggle { display: none; }

/* =============================================================
   FOOTER
   ============================================================= */

.site-footer {
  background: var(--si-navy-deep);
  color: rgba(255,255,255,0.75);
  padding: var(--sp-16) 0 var(--sp-8);
  font-size: var(--fs-sm);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--sp-12);
  margin-bottom: var(--sp-12);
}
.footer-grid-5 {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 2.5rem;
  margin-bottom: 3rem;
}
.footer-brand img { height: 48px; margin-bottom: var(--sp-4); filter: brightness(1.05); }
.footer-brand p { color: rgba(255,255,255,0.6); max-width: 22rem; margin-bottom: var(--sp-4); }
.footer-col h4 {
  color: #FFF;
  font-size: var(--fs-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--sp-4);
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: var(--sp-3); }
.footer-col a { color: rgba(255,255,255,0.7); transition: color var(--dur-fast); }
.footer-col a:hover { color: var(--si-orange-soft); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--sp-6);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-4);
  color: rgba(255,255,255,0.5);
  font-size: var(--fs-xs);
}

/* =============================================================
   RESPONSIVE
   ============================================================= */

@media (max-width: 960px) {
  .footer-grid, .footer-grid-5 { grid-template-columns: 1fr 1fr; gap: var(--sp-8); }
  :root { --header-h: var(--header-h-sm); }
}

@media (max-width: 600px) {
  .footer-grid, .footer-grid-5 { grid-template-columns: 1fr; }
  .hero { min-height: 88vh; }
  .hero-content { padding: var(--sp-16) 0 var(--sp-8); }
}

/* =============================================================
   UTILITIES
   ============================================================= */

.text-center  { text-align: center; }
.text-orange  { color: var(--si-orange-bright); }
.text-navy    { color: var(--si-navy); }
.text-eco     { color: var(--si-eco-green); }
.text-mono    { font-family: var(--font-mono); }

.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* Scrollbar (subtle) */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--si-mist); }
::-webkit-scrollbar-thumb { background: var(--si-steel); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: var(--si-navy); }