/* ═══════════════════════════════════════════
   NAM VIET GROUP — chapter-driven storytelling
   ═══════════════════════════════════════════ */

:root {
  --green-900: #0c2b1c;
  --green-700: #14522f;
  --green-600: #1d6a3e;
  --green-500: #2e8b57;
  --accent: #8fd694;
  --gold: #d9b970;
  --cream: #f4f1ea;
  --paper: #fbfaf7;
  --ink: #10231a;
  --ink-soft: #47584f;
  --white: #ffffff;

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", "Segoe UI", sans-serif;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.45, 0, 0.15, 1);

  --title: clamp(2.15rem, 5.2vw + 0.6rem, 7.25rem);
  --title-sm: clamp(1.85rem, 3.8vw + 0.5rem, 4.5rem);
  --pad-y: clamp(4rem, 10vh, 11rem);
  --pad-x: clamp(1.15rem, 4.5vw, 5rem);
  --content-max: 1240px;
  --layout-max: min(var(--content-max), 100% - (var(--pad-x) * 2));
  --content-x: max(var(--pad-x), calc((100vw - var(--layout-max)) / 2));
  --header-h: 68px;
  --hero-copy: min(36rem, 100%);
  --hero-title: min(52rem, 100%);
}

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

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

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

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

.container {
  width: var(--layout-max);
  margin-inline: auto;
}
.center { text-align: center; }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

img, svg, video { max-width: 100%; height: auto; }
button, a, .btn { -webkit-tap-highlight-color: transparent; }
@media (hover: none) {
  .btn:hover { transform: none; }
  .pcard:hover, .stat--boxed:hover, .pillar:hover { transform: none; box-shadow: none; }
}

/* ─── Language switching ─── */
.lang { display: none; }
[data-lang="en"] .lang.en { display: inline; }
[data-lang="vi"] .lang.vi { display: inline; }
[data-lang="zh"] .lang.zh { display: inline; }
h1 .lang, h2 .lang { display: none !important; }
[data-lang="en"] h1 .lang.en, [data-lang="en"] h2 .lang.en,
[data-lang="vi"] h1 .lang.vi, [data-lang="vi"] h2 .lang.vi,
[data-lang="zh"] h1 .lang.zh, [data-lang="zh"] h2 .lang.zh { display: block !important; }
body.lang-switching main { animation: langFade 0.5s var(--ease-out); }
@keyframes langFade { from { opacity: 0.35; } to { opacity: 1; } }

/* Bilingual measure & rhythm — EN shorter / denser; VI longer / needs air */
[data-lang="en"] {
  --title-track: -0.02em;
  --body-measure: 54ch;
  --desc-measure: 52ch;
  --hero-measure: 48ch;
  --title-scale: 1;
}
[data-lang="vi"] {
  --title-track: -0.01em;
  --body-measure: 58ch;   /* VN phrases run longer → slightly wider measure */
  --desc-measure: 56ch;
  --hero-measure: 54ch;
  --title-scale: 0.9;     /* keeps VI display titles from overpowering layout */
}
[data-lang="zh"] {
  --title-track: 0;
  --body-measure: 52ch;
  --desc-measure: 50ch;
  --hero-measure: 46ch;
  --title-scale: 0.92;
}
[data-lang="zh"] body,
[data-lang="zh"] .btn,
[data-lang="zh"] .header__nav,
[data-lang="zh"] .eyebrow,
[data-lang="zh"] .lead,
[data-lang="zh"] .body-text,
[data-lang="zh"] .chapter__desc,
[data-lang="zh"] .hero__desc {
  font-family: "Noto Sans SC", "Inter", "Segoe UI", sans-serif;
}

/* Responsive manual break — honoured on wide screens, ignored on phones */
.br-md { display: none; }
@media (min-width: 700px) { .br-md { display: inline; } }

/* ─── Loader ─── */
.loader {
  position: fixed; inset: 0; z-index: 200;
  background: var(--green-900);
  display: grid; place-items: center;
  transition: opacity 0.7s var(--ease-soft), visibility 0.7s;
}
.loader.is-done { opacity: 0; visibility: hidden; }
.loader__inner { display: grid; gap: 1.2rem; justify-items: center; }
.loader__logo {
  width: clamp(88px, 14vw, 130px); height: auto;
  animation: loaderPulse 1.6s ease-in-out infinite;
}
.loader__word {
  font-family: var(--font-display); font-weight: 400;
  letter-spacing: 0.42em; font-size: clamp(0.85rem, 2vw, 1.15rem);
  color: var(--cream); animation: loaderPulse 1.6s ease-in-out infinite;
}
.loader__bar { width: 180px; height: 1px; background: rgba(244,241,234,0.2); overflow: hidden; }
.loader__fill { display: block; height: 100%; width: 100%; background: var(--accent); transform-origin: left; animation: loaderFill 1.4s var(--ease-soft) forwards; }
@keyframes loaderFill { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes loaderPulse { 0%,100% { opacity: 0.65; } 50% { opacity: 1; } }

/* ─── Chapter rail (left indicator) ─── */
.rail {
  position: fixed;
  left: max(0.75rem, calc(var(--content-x) - clamp(2.8rem, 4vw, 3.6rem)));
  top: 50%;
  transform: translateY(-50%); z-index: 60;
  display: flex; flex-direction: column; align-items: center; gap: 1rem;
  font-size: 0.68rem; letter-spacing: 0.28em;
  color: var(--ink-soft); mix-blend-mode: normal;
  transition: color 0.5s;
}
.rail.rail--light { color: rgba(255,255,255,0.75); }
.rail__index { font-family: var(--font-display); font-size: 0.95rem; letter-spacing: 0.1em; }
.rail__line {
  position: relative; width: 1px; height: clamp(70px, 14vh, 130px);
  background: color-mix(in srgb, currentColor 25%, transparent);
}
.rail__progress { position: absolute; inset: 0 0 auto 0; height: 0%; background: currentColor; transition: height 0.15s linear; }
.rail__label { writing-mode: vertical-rl; text-orientation: mixed; font-weight: 500; }
@media (max-width: 900px) { .rail { display: none; } }

/* ─── Header ─── */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background 0.45s var(--ease-soft), box-shadow 0.45s, transform 0.45s var(--ease-soft), color 0.35s;
  color: var(--white);
}
.header.is-scrolled,
.header--inner {
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(16, 35, 26, 0.07);
  color: var(--ink);
}
.header.is-hidden { transform: translateY(-100%); }
.header.is-menu-open {
  background: transparent;
  backdrop-filter: none;
  box-shadow: none;
  color: var(--cream);
}
.header__inner {
  width: var(--layout-max);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 1rem clamp(1rem, 2vw, 2rem);
  padding-block: 0.7rem;
  min-height: var(--header-h);
  position: relative;
  z-index: 2;
}
.header__logo {
  grid-column: 1;
  justify-self: start;
  display: flex; align-items: center; gap: 0.7rem;
  min-width: 0;
}
.header__logo-mark {
  position: relative;
  flex: none;
  width: clamp(46px, 5.2vw, 56px);
  aspect-ratio: 1.37;
}
.logo-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: contain;
  transition: opacity 0.35s var(--ease-soft);
}
.logo-img--dark { opacity: 0; }
.header.is-scrolled:not(.is-menu-open) .logo-img--light,
.header--inner:not(.is-menu-open) .logo-img--light { opacity: 0; }
.header.is-scrolled:not(.is-menu-open) .logo-img--dark,
.header--inner:not(.is-menu-open) .logo-img--dark { opacity: 1; }
.header.is-menu-open .logo-img--light { opacity: 1; }
.header.is-menu-open .logo-img--dark { opacity: 0; }
.header__logo-text {
  display: none;
  font-size: 0.68rem; font-weight: 600; letter-spacing: 0.18em; line-height: 1.2;
  text-transform: uppercase; white-space: nowrap;
  opacity: 0.92;
}
.header__nav {
  grid-column: 2;
  justify-self: center;
  position: relative;
  display: flex;
  align-items: stretch;
  flex-wrap: nowrap;
  gap: clamp(0.15rem, 0.6vw, 0.45rem);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
[data-lang="vi"] .header__nav { font-size: 0.76rem; }
[data-lang="zh"] .header__nav { font-size: 0.75rem; letter-spacing: 0.01em; }
@media (min-width: 1281px) and (max-width: 1440px) {
  .header__nav { font-size: 0.76rem; gap: 0.1rem; }
  [data-lang="vi"] .header__nav { font-size: 0.72rem; }
  [data-lang="zh"] .header__nav { font-size: 0.71rem; }
}
@media (min-width: 1441px) {
  .header__logo-text { display: block; }
  .header__nav { gap: 0.35rem; font-size: 0.82rem; }
}

/* Top-level links */
.header__nav > a.nav-item__link,
.nav-mobile__body > a.nav-item__link,
.nav-item > .nav-item__link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  position: relative;
  padding: 0.55rem 0.7rem;
  color: inherit;
  opacity: 0.78;
  white-space: nowrap;
  border-radius: 8px;
  transition: opacity 0.25s, background 0.25s, color 0.25s;
}
.header__nav > a.nav-item__link:hover,
.nav-mobile__body > a.nav-item__link:hover,
.nav-item > .nav-item__link:hover,
.header__nav > a.nav-item__link:focus-visible,
.nav-mobile__body > a.nav-item__link:focus-visible,
.nav-item > .nav-item__link:focus-visible {
  opacity: 1;
  background: color-mix(in srgb, currentColor 8%, transparent);
}
.header__nav > a.nav-item__link.is-active,
.nav-mobile__body > a.nav-item__link.is-active,
.nav-item > .nav-item__link.is-active,
.nav-item.is-current > .nav-item__link {
  opacity: 1;
}
.header__nav > a.nav-item__link.is-active::after,
.nav-mobile__body > a.nav-item__link.is-active::after,
.nav-item > .nav-item__link.is-active::after,
.nav-item.is-current > .nav-item__link::after {
  content: "";
  position: absolute;
  left: 0.7rem;
  right: 0.7rem;
  bottom: 0.2rem;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}
.header.is-scrolled .header__nav > a.nav-item__link.is-active::after,
.header.is-scrolled .nav-mobile__body > a.nav-item__link.is-active::after,
.header.is-scrolled .nav-item > .nav-item__link.is-active::after,
.header.is-scrolled .nav-item.is-current > .nav-item__link::after,
.header--inner .header__nav > a.nav-item__link.is-active::after,
.header--inner .nav-mobile__body > a.nav-item__link.is-active::after,
.header--inner .nav-item > .nav-item__link.is-active::after,
.header--inner .nav-item.is-current > .nav-item__link::after {
  background: var(--green-600);
}
.nav-item {
  position: relative;
  display: flex;
  align-items: center;
}
.nav-item.has-mega { position: static; }
.nav-item__caret {
  width: 0.62rem;
  height: 0.62rem;
  flex: none;
  opacity: 0.55;
  transition: transform 0.28s var(--ease-out), opacity 0.2s;
}
.nav-item.is-open .nav-item__caret,
.nav-item:hover .nav-item__caret,
.nav-item:focus-within .nav-item__caret {
  transform: rotate(180deg);
  opacity: 0.9;
}

/* Dropdown */
.nav-dropdown {
  position: absolute;
  left: 0;
  top: 100%;
  min-width: 14.5rem;
  padding: 0.5rem;
  margin-top: 0;
  border-radius: 12px;
  background: var(--white);
  color: var(--ink);
  box-shadow: 0 12px 40px rgba(12, 43, 28, 0.12), 0 2px 8px rgba(12, 43, 28, 0.06);
  border: 1px solid rgba(16, 35, 26, 0.07);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(6px);
  transition: opacity 0.22s var(--ease-soft), visibility 0.22s, transform 0.22s var(--ease-soft);
  z-index: 120;
}
/* Hover bridge — keep menu open while moving cursor down */
.nav-dropdown::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: -14px;
  height: 14px;
}
.nav-dropdown__link {
  display: block;
  padding: 0.65rem 0.9rem;
  border-radius: 8px;
  font-size: 0.84rem;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--ink-soft);
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}
.nav-dropdown__link:hover,
.nav-dropdown__link.is-active,
.nav-dropdown__link:focus-visible {
  background: color-mix(in srgb, var(--green-600) 10%, var(--paper));
  color: var(--green-700);
}

/* Mega menu */
.nav-mega {
  position: absolute;
  left: 50%;
  top: 100%;
  width: min(1120px, calc(100vw - 2.5rem));
  transform: translateX(-50%) translateY(10px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s var(--ease-soft), visibility 0.25s, transform 0.25s var(--ease-soft);
  z-index: 120;
  padding-top: 0.85rem;
}
.nav-mega__panel {
  padding: 1.6rem 1.75rem 1.75rem;
  border-radius: 16px;
  background: var(--white);
  color: var(--ink);
  box-shadow: 0 20px 56px rgba(12, 43, 28, 0.16), 0 4px 14px rgba(12, 43, 28, 0.06);
  border: 1px solid rgba(16, 35, 26, 0.09);
}
.nav-mega__grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.35rem 1.25rem;
}
.nav-mega__col {
  min-width: 0;
  padding: 0.15rem 0.25rem;
}
.nav-mega__head {
  margin: 0 0 0.75rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid rgba(16, 35, 26, 0.1);
}
.nav-mega__key {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green-600);
  line-height: 1.3;
}
.nav-mega__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.1rem;
}
.nav-mega__link {
  display: block;
  padding: 0.42rem 0.5rem;
  margin-inline: -0.5rem;
  border-radius: 7px;
  font-size: 0.8rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--ink-soft);
  white-space: normal;
  transition: background 0.18s, color 0.18s;
}
.nav-mega__link:hover,
.nav-mega__link.is-active,
.nav-mega__link:focus-visible {
  background: color-mix(in srgb, var(--green-600) 11%, transparent);
  color: var(--green-700);
}

@media (min-width: 1281px) {
  .nav-item.has-dropdown:hover .nav-dropdown,
  .nav-item.has-dropdown:focus-within .nav-dropdown,
  .nav-item.is-open .nav-dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }
  .nav-item.has-mega:hover .nav-mega,
  .nav-item.has-mega:focus-within .nav-mega,
  .nav-item.is-open .nav-mega {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
  }
  .nav-item.has-dropdown:hover > .nav-item__link,
  .nav-item.has-mega:hover > .nav-item__link,
  .nav-item.is-open > .nav-item__link {
    opacity: 1;
    background: color-mix(in srgb, currentColor 8%, transparent);
  }
}
@media (max-width: 1400px) and (min-width: 1281px) {
  .nav-mega { width: min(920px, calc(100vw - 2rem)); }
  .nav-mega__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.15rem 1.5rem;
  }
}

.header__cta-arrow {
  font-size: 1.05rem;
  line-height: 1;
  margin-left: 0.1rem;
  transition: transform 0.25s var(--ease-out);
}
.header__cta:hover .header__cta-arrow { transform: translateX(3px); }
.header__actions {
  grid-column: 3;
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-shrink: 0;
}
.lang-switch {
  position: relative;
  flex-shrink: 0;
}
.lang-switch__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 2.2rem;
  padding: 0.28rem 0.55rem 0.28rem 0.4rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, currentColor 22%, transparent);
  background: color-mix(in srgb, currentColor 6%, transparent);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: inherit;
  transition: background 0.25s, border-color 0.25s;
}
.lang-switch__toggle:hover,
.lang-switch.is-open .lang-switch__toggle {
  background: color-mix(in srgb, currentColor 10%, transparent);
  border-color: color-mix(in srgb, currentColor 32%, transparent);
}
.lang-switch__code {
  min-width: 1.35rem;
  line-height: 1;
}
.lang-switch__caret {
  width: 0.7rem;
  height: 0.7rem;
  opacity: 0.7;
  transition: transform 0.22s var(--ease-out);
}
.lang-switch.is-open .lang-switch__caret { transform: rotate(180deg); }
.lang-flag {
  display: block;
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  flex-shrink: 0;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, currentColor 18%, transparent);
  background-color: color-mix(in srgb, currentColor 8%, transparent);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.lang-flag--en { background-image: url("/assets/img/flags/en.png"); }
.lang-flag--vi { background-image: url("/assets/img/flags/vi.png"); }
.lang-flag--zh { background-image: url("/assets/img/flags/zh.png"); }
.lang-switch__menu {
  position: absolute;
  top: calc(100% + 0.4rem);
  right: 0;
  z-index: 120;
  min-width: 7.5rem;
  padding: 0.3rem;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--ink) 10%, transparent);
  background: var(--paper, #fbfaf7);
  box-shadow: 0 14px 36px color-mix(in srgb, var(--ink) 16%, transparent);
  color: var(--ink);
}
.lang-switch__menu[hidden] { display: none; }
.lang-switch__menu button {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  width: 100%;
  padding: 0.48rem 0.55rem;
  border-radius: 8px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-align: left;
  transition: background 0.2s;
}
.lang-switch__menu button:hover,
.lang-switch__menu button:focus-visible {
  background: color-mix(in srgb, var(--green-600) 10%, transparent);
}
.lang-switch__menu button.is-active {
  background: color-mix(in srgb, var(--green-600) 14%, transparent);
  color: var(--green-800, #14522f);
}
.lang-switch__menu button[data-set-lang="zh"] {
  letter-spacing: 0;
  font-size: 0.78rem;
}
.header__cta.btn {
  flex-shrink: 0;
  gap: 0.45rem;
  padding-inline: 1.15rem;
  box-shadow: none;
}
.header:not(.is-scrolled):not(.is-menu-open) .header__cta.btn--solid {
  background: color-mix(in srgb, var(--white) 14%, transparent);
  color: var(--white);
  border-color: color-mix(in srgb, var(--white) 55%, transparent);
  backdrop-filter: blur(6px);
}
.header:not(.is-scrolled):not(.is-menu-open) .header__cta.btn--solid:hover {
  background: var(--white);
  color: var(--green-900);
  border-color: var(--white);
}
.header.is-scrolled .header__cta.btn--solid,
.header--inner .header__cta.btn--solid {
  background: var(--green-600);
  border-color: var(--green-600);
  color: var(--white);
}
.header.is-scrolled .header__cta.btn--solid:hover,
.header--inner .header__cta.btn--solid:hover {
  background: var(--green-700);
  border-color: var(--green-700);
}
.search-toggle {
  transition: background 0.25s, border-color 0.25s;
}
.search-toggle:hover {
  background: color-mix(in srgb, currentColor 8%, transparent);
}
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, currentColor 35%, transparent);
  flex: none;
  transition: border-color 0.35s, background 0.35s;
}
.burger:hover { background: color-mix(in srgb, currentColor 8%, transparent); }
.burger span {
  width: 16px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.35s var(--ease-out), opacity 0.25s;
}
.burger.is-open span:first-child { transform: translateY(3.75px) rotate(45deg); }
.burger.is-open span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
.nav-mobile__head,
.nav-mobile__foot,
.nav-backdrop { display: none; }

@media (max-width: 1280px) {
  .header__inner {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
  }
  .header__logo { flex: 1; min-width: 0; }
  .header__logo-text {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: min(11rem, 34vw);
  }
  .nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 88;
    background: color-mix(in srgb, var(--green-900) 55%, transparent);
    backdrop-filter: blur(3px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s var(--ease-soft);
  }
  .nav-backdrop.is-visible {
    opacity: 1;
    pointer-events: auto;
  }
  .header__nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: auto;
    z-index: 92;
    width: min(22.5rem, 88vw);
    max-width: 100%;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    gap: 0;
    overflow: hidden;
    background:
      linear-gradient(180deg, #0f2f20 0%, var(--green-900) 42%, #081c13 100%);
    color: var(--cream);
    font-size: 1.05rem;
    font-family: var(--font-body);
    font-weight: 500;
    letter-spacing: 0.01em;
    opacity: 1;
    visibility: visible;
    pointer-events: none;
    transform: translateX(104%);
    transition: transform 0.42s var(--ease-out);
    padding: 0;
    box-shadow: -18px 0 48px color-mix(in srgb, #000 35%, transparent);
  }
  [data-lang="vi"] .header__nav,
  [data-lang="zh"] .header__nav { font-size: 1rem; }
  .header__nav.is-open {
    transform: translateX(0);
    pointer-events: auto;
  }
  .nav-mobile__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex: none;
    padding: calc(1.1rem + env(safe-area-inset-top)) 1.15rem 1rem;
    border-bottom: 1px solid color-mix(in srgb, var(--cream) 12%, transparent);
  }
  .nav-mobile__brand {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    min-width: 0;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }
  .nav-mobile__brand img {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    object-fit: cover;
    flex: none;
  }
  .nav-mobile__brand span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .nav-mobile__close {
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 50%;
    border: 1px solid color-mix(in srgb, var(--cream) 28%, transparent);
    display: grid;
    place-items: center;
    font-size: 1.55rem;
    line-height: 1;
    color: var(--cream);
    flex: none;
    transition: background 0.25s, border-color 0.25s;
  }
  .nav-mobile__close:hover {
    background: color-mix(in srgb, var(--cream) 10%, transparent);
    border-color: color-mix(in srgb, var(--cream) 45%, transparent);
  }
  .nav-mobile__body {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 0.75rem 0.85rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    -webkit-overflow-scrolling: touch;
  }
  .nav-mobile__foot {
    display: grid;
    gap: 0.75rem;
    flex: none;
    padding: 1rem 1.15rem calc(1.15rem + env(safe-area-inset-bottom));
    border-top: 1px solid color-mix(in srgb, var(--cream) 12%, transparent);
    background: color-mix(in srgb, #000 18%, transparent);
  }
  .nav-mobile__cta {
    width: 100%;
    justify-content: center;
    background: var(--cream);
    color: var(--green-900);
    border-color: var(--cream);
  }
  .nav-mobile__cta:hover {
    background: #fff;
    border-color: #fff;
    color: var(--green-900);
  }
  .nav-mobile__meta {
    margin: 0;
    text-align: center;
    font-size: 0.78rem;
    opacity: 0.7;
  }
  .nav-mobile__meta a:hover { opacity: 1; text-decoration: underline; }
  .header__nav.is-open .nav-mobile__body > .nav-item,
  .header__nav.is-open .nav-mobile__body > a.nav-item__link {
    animation: navItemIn 0.45s var(--ease-out) both;
  }
  .header__nav.is-open .nav-mobile__body > :nth-child(1) { animation-delay: 0.04s; }
  .header__nav.is-open .nav-mobile__body > :nth-child(2) { animation-delay: 0.08s; }
  .header__nav.is-open .nav-mobile__body > :nth-child(3) { animation-delay: 0.12s; }
  .header__nav.is-open .nav-mobile__body > :nth-child(4) { animation-delay: 0.16s; }
  .header__nav.is-open .nav-mobile__body > :nth-child(5) { animation-delay: 0.2s; }
  .header__nav.is-open .nav-mobile__body > :nth-child(6) { animation-delay: 0.24s; }
  @keyframes navItemIn {
    from { opacity: 0; transform: translateX(12px); }
    to { opacity: 1; transform: none; }
  }
  .header__nav > a.nav-item__link,
  .nav-mobile__body > a.nav-item__link,
  .nav-item > .nav-item__link {
    justify-content: space-between;
    width: 100%;
    padding: 0.85rem 0.9rem;
    opacity: 1;
    border-radius: 12px;
    font-size: inherit;
    font-weight: 600;
    letter-spacing: 0.01em;
    border: 1px solid transparent;
    white-space: normal;
  }
  .header__nav > a.nav-item__link.is-active::after,
  .nav-item > .nav-item__link.is-active::after,
  .nav-item.is-current > .nav-item__link::after { display: none; }
  .header__nav > a.nav-item__link:hover,
  .nav-mobile__body > a.nav-item__link:hover,
  .nav-item > .nav-item__link:hover {
    background: color-mix(in srgb, var(--cream) 8%, transparent);
  }
  .header__nav > a.nav-item__link.is-active,
  .nav-mobile__body > a.nav-item__link.is-active,
  .nav-item.is-current > .nav-item__link {
    background: color-mix(in srgb, var(--accent) 16%, transparent);
    border-color: color-mix(in srgb, var(--accent) 28%, transparent);
    color: #fff;
  }
  .nav-item {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }
  .nav-item__caret {
    width: 0.85rem;
    height: 0.85rem;
    opacity: 0.75;
    flex: none;
    transition: transform 0.3s;
  }
  .nav-item.is-open > .nav-item__link {
    background: color-mix(in srgb, var(--cream) 10%, transparent);
    color: #fff;
    border-radius: 12px;
  }
  .nav-item.is-open > .nav-item__link .nav-item__caret { transform: rotate(180deg); }
  .nav-dropdown,
  .nav-mega {
    position: static;
    transform: none;
    width: 100%;
    min-width: 0;
    opacity: 1;
    visibility: visible;
    pointer-events: none;
    max-height: 0;
    overflow: hidden;
    padding: 0;
    margin: 0;
    box-shadow: none;
    border: 0;
    background: transparent;
    color: inherit;
    transition: max-height 0.35s var(--ease-soft);
  }
  .nav-dropdown::before { display: none; }
  .nav-mega__panel {
    padding: 0;
    margin: 0;
    border: 0;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
  }
  .nav-item.is-open .nav-dropdown,
  .nav-item.is-open .nav-mega {
    pointer-events: auto;
    max-height: 2400px;
    overflow: visible;
  }
  .nav-item.is-open .nav-dropdown {
    display: grid;
    gap: 0.05rem;
    padding: 0.2rem 0 0.45rem 0.85rem;
  }
  .nav-dropdown__link {
    text-align: left;
    color: color-mix(in srgb, var(--cream) 70%, transparent);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.7rem 0.85rem;
    border-radius: 10px;
    white-space: normal;
  }
  .nav-dropdown__link:hover {
    background: color-mix(in srgb, var(--cream) 8%, transparent);
    color: #fff;
  }
  .nav-dropdown__link.is-active {
    background: color-mix(in srgb, var(--accent) 18%, transparent);
    color: #fff;
    font-weight: 600;
  }
  .nav-item.is-open .nav-mega__panel {
    padding: 0.2rem 0 0.4rem 0.75rem;
  }
  .nav-mega__grid {
    grid-template-columns: 1fr;
    gap: 1.15rem;
  }
  .nav-mega__col { padding: 0; }
  .nav-mega__head {
    border-bottom: 1px solid color-mix(in srgb, var(--cream) 12%, transparent);
    margin: 0 0 0.3rem;
    padding: 0.2rem 0.85rem 0.5rem;
  }
  .nav-mega__key {
    color: var(--accent);
    letter-spacing: 0.1em;
    font-size: 0.68rem;
  }
  .nav-mega__link {
    color: color-mix(in srgb, var(--cream) 70%, transparent);
    margin-inline: 0;
    padding: 0.65rem 0.85rem;
    border-radius: 10px;
    white-space: normal;
    font-size: 0.9rem;
    font-weight: 500;
  }
  .nav-mega__link:hover {
    background: color-mix(in srgb, var(--cream) 8%, transparent);
    color: #fff;
  }
  .nav-mega__link.is-active {
    background: color-mix(in srgb, var(--accent) 18%, transparent);
    color: #fff;
    font-weight: 600;
  }
  .header__actions { flex: none; gap: 0.45rem; }
  .burger { display: flex; position: relative; z-index: 95; }
  .header.is-scrolled:not(.is-menu-open) .burger {
    border-color: color-mix(in srgb, var(--ink) 35%, transparent);
  }
  .header.is-menu-open .header__logo,
  .header.is-menu-open .search-toggle,
  .header.is-menu-open .lang-switch,
  .header.is-menu-open .burger {
    opacity: 0;
    pointer-events: none;
  }
  .header a.header__cta.btn { display: none !important; }
}
@media (min-width: 1281px) {
  .nav-mobile__head,
  .nav-mobile__foot,
  .nav-backdrop { display: none !important; }
  .nav-mobile__body {
    display: contents;
  }
}
@media (prefers-reduced-motion: reduce) {
  .header__nav,
  .nav-backdrop { transition: none !important; }
  .header__nav.is-open .nav-mobile__body > .nav-item,
  .header__nav.is-open .nav-mobile__body > a.nav-item__link {
    animation: none !important;
  }
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.7rem;
  padding: 0.95rem 1.9rem; border-radius: 99px;
  font-size: 0.85rem; font-weight: 600; letter-spacing: 0.05em;
  border: 1px solid currentColor;
  transition: background 0.35s var(--ease-soft), color 0.35s, border-color 0.35s, transform 0.35s var(--ease-out);
  will-change: transform;
  text-align: center; text-wrap: balance; max-width: 100%;
  text-decoration: none;
}
[data-lang="vi"] .btn { letter-spacing: 0.01em; padding-inline: 1.55rem; }
[data-lang="zh"] .btn { letter-spacing: 0.02em; padding-inline: 1.45rem; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn__dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; transition: transform 0.35s var(--ease-out); }
.btn:hover .btn__dot { transform: scale(1.6); }
.btn--light { color: var(--white); border-color: rgba(255,255,255,0.55); }
.btn--light:hover { background: var(--white); color: var(--green-900); border-color: var(--white); }
.btn--dark { color: var(--green-900); border-color: rgba(12,43,28,0.4); }
.btn--dark:hover { background: var(--green-900); color: var(--cream); border-color: var(--green-900); }
.btn--solid { background: var(--green-600); color: var(--white); border-color: var(--green-600); }
.btn--solid:hover { background: var(--green-700); border-color: var(--green-700); }
.btn--outline { background: transparent; }
.btn--small { padding: 0.55rem 1.25rem; font-size: 0.78rem; }
.btn--big { padding: 1.15rem 2.4rem; font-size: 0.95rem; }

/* ─── Typographic atoms ─── */
.eyebrow {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.34em; text-transform: uppercase;
  color: var(--green-600); margin-bottom: 1.6rem;
  display: flex; align-items: center; gap: 0.9rem;
}
[data-lang="vi"] .eyebrow { letter-spacing: 0.16em; }
.eyebrow::before { content: ""; width: 34px; height: 1px; background: currentColor; }
.eyebrow--light { color: var(--accent); }
.chapter__head--center .eyebrow, .cta .eyebrow { justify-content: center; }

.chapter__num {
  display: block;
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(4rem, 9vw, 7rem);
  line-height: 1; opacity: 0.08; margin-bottom: -0.16em;
  user-select: none;
}
.chapter--dark .chapter__num, .cta .chapter__num { opacity: 0.14; }

/* Titles break manually via .line-mask spans — no max-width so a manual
   line never re-wraps mid-phrase; the clamp() font size handles overflow. */
.chapter__title {
  font-family: var(--font-display); font-weight: 400;
  font-size: calc(var(--title) * var(--title-scale, 1));
  line-height: 1.08; letter-spacing: var(--title-track, -0.015em);
  margin-bottom: clamp(1.6rem, 3.5vw, 2.6rem);
}
[data-lang="vi"] .chapter__title { line-height: 1.16; } /* room for diacritics */
.chapter__title--sm { font-size: calc(var(--title-sm) * var(--title-scale, 1)); }
.chapter__title--center { text-align: center; margin-inline: auto; }
.chapter__head--center .chapter__title { margin-inline: auto; }

.line-mask { display: block; overflow: hidden; padding-bottom: 0.08em; margin-bottom: -0.08em; }
.line {
  display: block;
  transform: translateY(115%) rotate(1.2deg);
  transform-origin: left top;
  transition: transform 1.1s var(--ease-out);
}
.in-view .line { transform: translateY(0) rotate(0); }
.line-mask:nth-child(2) .line { transition-delay: 0.1s; }
.line-mask:nth-child(3) .line { transition-delay: 0.18s; }
.line--accent { color: var(--accent); font-style: italic; }
.line--muted { color: var(--green-600); font-style: italic; }

.lead {
  font-size: clamp(1.05rem, 1.5vw, 1.28rem);
  line-height: 1.65; font-weight: 400; margin-bottom: 1.4rem;
  max-width: var(--body-measure, 56ch);
  text-wrap: pretty;
}
.body-text {
  color: var(--ink-soft); margin-bottom: 2.2rem;
  max-width: var(--body-measure, 56ch);
  line-height: 1.7;
  text-wrap: pretty;
}
.chapter__desc {
  max-width: var(--desc-measure, 58ch);
  color: inherit; opacity: 0.86;
  font-size: clamp(0.98rem, 1.35vw, 1.12rem);
  line-height: 1.7;
  text-wrap: pretty;
}
.chapter__desc--center { margin-inline: auto; text-align: center; }
[data-lang="vi"] .lead,
[data-lang="vi"] .body-text,
[data-lang="vi"] .chapter__desc,
[data-lang="vi"] .hero__desc {
  line-height: 1.75;
  word-break: keep-all;          /* keep VN syllables intact */
  overflow-wrap: break-word;
  hyphens: none;
}

/* ─── Reveal animations ─── */
.reveal {
  opacity: 0; transform: translateY(36px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
  transition-delay: var(--d, 0ms);
}
.reveal.in-view { opacity: 1; transform: none; }

.reveal-img { overflow: hidden; border-radius: 18px; position: relative; }
.reveal-img::after {
  content: ""; position: absolute; inset: 0; background: var(--green-900);
  transform: scaleX(1); transform-origin: right;
  transition: transform 1s var(--ease-soft) 0.1s;
}
.reveal-img.in-view::after { transform: scaleX(0); }
.reveal-img img {
  width: 100%; height: 100%; object-fit: cover;
  transform: scale(1.12);
  transition: transform 1.6s var(--ease-out) 0.1s;
}
.reveal-img.in-view img { transform: scale(1); }

@media (prefers-reduced-motion: reduce) {
  .reveal, .line, .reveal-img img, .reveal-img::after { transition: none !important; transform: none !important; opacity: 1 !important; }
  html { scroll-behavior: auto; }
}

/* ─── Chapter shells ─── */
.chapter { position: relative; padding-block: var(--pad-y); }
.chapter--light { background: var(--paper); }
.chapter--cream { background: var(--cream); }
.chapter--dark { background: var(--green-900); color: var(--cream); }
.chapter--solid { background: linear-gradient(165deg, #0c2b1c 0%, #10381f 100%); }
.chapter__head { margin-bottom: clamp(2.8rem, 6vw, 4.5rem); }
.chapter__head--center { text-align: center; }
.chapter__head--center .chapter__desc { margin-inline: auto; }

.chapter__bg { position: absolute; inset: 0; overflow: hidden; }
.chapter__bg img { width: 100%; height: 115%; object-fit: cover; will-change: transform; }
.chapter__bg-veil {
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(8, 30, 19, 0.93) 30%, rgba(8, 30, 19, 0.62) 70%, rgba(8, 30, 19, 0.45));
}
.chapter__bg-veil--strong { background: linear-gradient(100deg, rgba(8, 25, 18, 0.94) 35%, rgba(8, 25, 18, 0.7)); }
.chapter__bg-veil--warm { background: linear-gradient(180deg, rgba(12, 36, 22, 0.82), rgba(10, 30, 19, 0.9)); }
.chapter--dark .container, .cta .container { position: relative; z-index: 2; }

/* ─── 01 · Hero ─── */
.hero {
  min-height: 100svh;
  display: flex; align-items: center;
  color: var(--white);
  padding-block: 0;
}
.hero__bg { position: absolute; inset: 0; overflow: hidden; }
.hero__img {
  width: 100%; height: 115%; object-fit: cover;
  object-position: 58% center;
  transform: scale(1.08);
  animation: heroZoom 2.8s var(--ease-out) 0.4s forwards;
  will-change: transform;
}
@keyframes heroZoom { to { transform: scale(1); } }
.hero__veil {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(8, 28, 18, 0.55), transparent 34%, rgba(8, 28, 18, 0.5) 88%),
    linear-gradient(102deg, rgba(8, 28, 18, 0.9) 0%, rgba(8, 28, 18, 0.78) 38%, rgba(8, 28, 18, 0.28) 52%, transparent 68%);
}
.hero__content {
  position: relative; z-index: 2;
  padding-top: calc(var(--header-h) + 1.5rem);
  padding-bottom: clamp(4.5rem, 10vh, 7.5rem);
}
.hero__content > * { max-width: var(--hero-copy); }
.hero__title {
  max-width: var(--hero-title);
  font-family: var(--font-display); font-weight: 400;
  font-size: calc(clamp(2.4rem, 5.2vw + 0.3rem, 6.25rem) * var(--title-scale, 1));
  line-height: 1.06; letter-spacing: var(--title-track, -0.02em);
  margin-bottom: clamp(1.2rem, 3vw, 2.4rem);
}
.hero__title .line { white-space: nowrap; }
@media (max-width: 1280px) {
  .hero__title {
    font-size: calc(clamp(2.1rem, 4.2vw + 0.2rem, 4.8rem) * var(--title-scale, 1));
  }
  .hero__title .line { white-space: normal; }
}
[data-lang="vi"] .hero__title { line-height: 1.14; }
[data-lang="zh"] .hero__title { line-height: 1.12; letter-spacing: 0.01em; }
[data-lang="zh"] .hero__title,
[data-lang="zh"] .chapter__title {
  font-family: "Noto Sans SC", var(--font-body);
  font-weight: 600;
}
.hero__desc {
  max-width: var(--hero-measure, 48ch);
  font-size: clamp(0.95rem, 1.4vw + 0.35rem, 1.15rem);
  opacity: 0.92; margin-bottom: clamp(1.6rem, 3vw, 2.6rem); font-weight: 300;
  line-height: 1.7;
  text-wrap: pretty;
}
.hero__scroll {
  position: absolute; bottom: 2.2rem; left: var(--content-x);
  transform: none;
  z-index: 2; display: flex; flex-direction: column; align-items: flex-start; gap: 0.7rem;
  font-size: 0.68rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: rgba(255,255,255,0.8);
}
.hero__scroll i {
  width: 1px; height: 52px; background: rgba(255,255,255,0.35);
  position: relative; overflow: hidden;
}
.hero__scroll i::after {
  content: ""; position: absolute; left: 0; top: -50%;
  width: 100%; height: 50%; background: var(--white);
  animation: scrollHint 1.8s var(--ease-soft) infinite;
}
@keyframes scrollHint { 0% { top: -50%; } 100% { top: 110%; } }
@media (max-height: 720px) {
  .hero__scroll { display: none; }
  .hero__content { padding-bottom: 3rem; }
}
@media (max-width: 600px) {
  .hero { min-height: 100svh; align-items: flex-end; }
  .hero__veil {
    background:
      linear-gradient(180deg, rgba(8, 28, 18, 0.45) 0%, rgba(8, 28, 18, 0.25) 40%, rgba(8, 28, 18, 0.88) 100%),
      linear-gradient(95deg, rgba(8, 28, 18, 0.55), transparent 70%);
  }
  .hero__title .line { white-space: normal; }
  .hero__content {
    padding-bottom: calc(6.75rem + env(safe-area-inset-bottom, 0px));
  }
  .hero__scroll {
    left: var(--content-x);
    right: auto;
    bottom: calc(1.1rem + env(safe-area-inset-bottom, 0px));
    font-size: 0.58rem;
    letter-spacing: 0.22em;
    gap: 0.45rem;
    max-width: calc(100% - (var(--content-x) * 2));
  }
  .hero__scroll i { height: 36px; }
}
@media (max-width: 600px) and (max-height: 700px) {
  .hero__scroll { display: none; }
  .hero__content {
    padding-bottom: calc(2.5rem + env(safe-area-inset-bottom, 0px));
  }
}

/* ─── 02 · About ─── */
.about__grid {
  display: grid; grid-template-columns: 5fr 6fr;
  gap: clamp(2.5rem, 6vw, 5.5rem);
  align-items: start;
}
.about__media { aspect-ratio: 4/4.6; position: sticky; top: 110px; }
.stats {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 2.4rem 2rem; margin-top: 2.8rem;
  border-top: 1px solid rgba(16, 35, 26, 0.12); padding-top: 2.4rem;
}
.stat__value {
  display: block; font-family: var(--font-display); font-weight: 400;
  font-size: clamp(2.6rem, 4.5vw, 3.8rem); line-height: 1;
  color: var(--green-700); letter-spacing: -0.02em;
}
.stat__value small { font-size: 0.5em; }
.stat__value--text { font-size: clamp(1.3rem, 2vw, 1.7rem); line-height: 1.3; padding-top: 0.4em; }
.stat__label {
  display: block; margin-top: 0.6rem;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--ink-soft); line-height: 1.35; text-wrap: balance;
}
[data-lang="vi"] .stat__label { letter-spacing: 0.1em; font-size: 0.72rem; }
@media (max-width: 900px) {
  .about__grid { grid-template-columns: 1fr; gap: 1.75rem; }
  .about__media { position: static; aspect-ratio: 16/11; order: -1; border-radius: 14px; overflow: hidden; }
  .stats { gap: 1.5rem 1.25rem; margin-top: 1.75rem; padding-top: 1.75rem; }
}

/* ─── 03 · Ecosystem flow ─── */
.flow {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: rgba(244, 241, 234, 0.14);
  border: 1px solid rgba(244, 241, 234, 0.14);
  border-radius: 18px; overflow: hidden;
  margin-bottom: clamp(2.5rem, 5vw, 3.6rem);
}
.flow__step {
  background: rgba(12, 43, 28, 0.86);
  backdrop-filter: blur(4px);
  padding: clamp(1.4rem, 2.6vw, 2.2rem);
  display: flex; flex-direction: column; gap: 1.1rem;
  transition: background 0.4s var(--ease-soft);
  position: relative;
}
.flow__step:hover { background: rgba(29, 106, 62, 0.75); }
.flow__no { font-size: 0.7rem; letter-spacing: 0.24em; opacity: 0.55; font-weight: 600; }
.flow__step svg { width: 30px; height: 30px; color: var(--accent); }
.flow__name {
  font-size: 0.95rem; font-weight: 600; letter-spacing: 0.02em;
  line-height: 1.3; text-wrap: balance;
}
[data-lang="vi"] .flow__name { font-size: 0.84rem; letter-spacing: 0; }
.flow__step::after {
  content: "→"; position: absolute; right: 1.1rem; top: 1.15rem;
  font-size: 0.85rem; opacity: 0.3;
}
.flow__step:last-child::after { content: ""; }
@media (max-width: 900px) {
  .flow {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 0;
    border-radius: 14px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    scroll-padding-inline: 0.25rem;
    /* Hint that more steps exist to the right */
    mask-image: linear-gradient(90deg, #000 0%, #000 calc(100% - 2.25rem), transparent 100%);
    -webkit-mask-image: linear-gradient(90deg, #000 0%, #000 calc(100% - 2.25rem), transparent 100%);
  }
  .flow::-webkit-scrollbar { display: none; }
  .flow__step {
    flex: 0 0 min(68vw, 220px);
    scroll-snap-align: start;
    padding: 1.15rem 1rem;
    gap: 0.75rem;
    border-right: 1px solid rgba(244, 241, 234, 0.12);
  }
  .flow__step:last-child {
    border-right: 0;
    /* Extra trailing space so last card can clear the fade + float buttons */
    margin-inline-end: 3rem;
  }
  .flow__name { font-size: 0.86rem; }
  .flow__step::after { right: 0.85rem; top: 1rem; }
}

/* Ecosystem map — sector tabs + image stage */
.eco-map {
  margin-block: clamp(2.5rem, 5vw, 3.75rem) clamp(2rem, 4vw, 3rem);
}
.eco-map--flush { margin-top: 1.25rem; }
.eco-map__head { margin-bottom: 1.35rem; max-width: 46rem; }
.eco-map__title {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  font-weight: 400;
  letter-spacing: -0.01em;
}
.eco-map__intro {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.65;
  opacity: 0.82;
  text-wrap: pretty;
}

.eco-map__tabs-wrap {
  margin-bottom: 1rem;
  overflow: hidden;
}
.eco-map__tabs {
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  padding-bottom: 0.35rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.eco-map__tabs::-webkit-scrollbar { display: none; }
.eco-map__tab {
  flex: 1 0 auto;
  min-width: max(9.5rem, 14%);
  scroll-snap-align: start;
  display: grid;
  gap: 0.35rem;
  align-content: start;
  text-align: left;
  padding: 0.85rem 1rem 0.95rem;
  border-radius: 10px;
  border: 1px solid transparent;
  transition:
    background 0.28s var(--ease-out),
    border-color 0.28s var(--ease-out),
    color 0.28s var(--ease-out);
}
@media (max-width: 720px) {
  .eco-map__tabs-wrap {
    mask-image: linear-gradient(90deg, #000 0%, #000 calc(100% - 2rem), transparent 100%);
    -webkit-mask-image: linear-gradient(90deg, #000 0%, #000 calc(100% - 2rem), transparent 100%);
  }
  .eco-map__tabs {
    gap: 0.4rem;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: 0.15rem;
    /* Room so last tabs aren’t buried under float chat */
    padding-inline-end: 3.5rem;
  }
  .eco-map__tab {
    flex: 0 0 auto;
    min-width: 0;
    width: min(62vw, 11.5rem);
    padding: 0.75rem 0.85rem 0.85rem;
  }
  .eco-map__tab-key { font-size: 0.64rem; letter-spacing: 0.14em; }
  .eco-map__tab-label { font-size: 0.8rem; }
  [data-lang="vi"] .eco-map__tab-label { font-size: 0.76rem; }
}
.eco-map__tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.eco-map__tab-key {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  opacity: 0.55;
}
.eco-map__tab-label {
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

/* Dark (home chapter) */
.eco-map--dark .eco-map__tab {
  background: color-mix(in srgb, var(--cream) 6%, transparent);
  border-color: color-mix(in srgb, var(--cream) 10%, transparent);
  color: var(--cream);
}
.eco-map--dark .eco-map__tab:hover {
  background: color-mix(in srgb, var(--cream) 11%, transparent);
}
.eco-map--dark .eco-map__tab.is-active {
  background: color-mix(in srgb, var(--green-600) 55%, var(--green-900));
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
}
.eco-map--dark .eco-map__tab.is-active .eco-map__tab-key { color: var(--accent); opacity: 1; }

/* Ink (about / light) */
.eco-map--ink .eco-map__tab {
  background: color-mix(in srgb, var(--ink) 4%, var(--paper));
  border-color: color-mix(in srgb, var(--ink) 10%, transparent);
  color: var(--ink);
}
.eco-map--ink .eco-map__tab:hover {
  background: color-mix(in srgb, var(--green-600) 8%, var(--paper));
}
.eco-map--ink .eco-map__tab.is-active {
  background: var(--green-900);
  border-color: var(--green-900);
  color: var(--cream);
}
.eco-map--ink .eco-map__tab.is-active .eco-map__tab-key { color: var(--accent); opacity: 1; }
.eco-map--ink .eco-map__tab:focus-visible { outline-color: var(--green-600); }

.eco-map__stage {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--cream) 12%, transparent);
}
.eco-map--ink .eco-map__stage {
  border-color: color-mix(in srgb, var(--ink) 10%, transparent);
  background: var(--paper);
}

.eco-map__panel {
  display: none;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  min-height: min(28rem, 70vh);
}
.eco-map__panel.is-active {
  display: grid;
  animation: ecoMapIn 0.38s var(--ease-out);
}
.eco-map__panel[hidden] { display: none !important; }

@keyframes ecoMapIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.eco-map__media {
  position: relative;
  min-height: 16rem;
  overflow: hidden;
  background: var(--green-900);
}
.eco-map__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
}
.eco-map__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(160deg, rgba(12, 43, 28, 0.18) 0%, rgba(12, 43, 28, 0.72) 58%, rgba(12, 43, 28, 0.92) 100%),
    linear-gradient(90deg, rgba(12, 43, 28, 0.35) 0%, transparent 55%);
  pointer-events: none;
}
.eco-map__media-copy {
  position: absolute;
  inset: auto 0 0;
  padding: clamp(1.25rem, 3vw, 2rem);
  color: var(--cream);
  z-index: 1;
}
.eco-map__sector-key {
  margin: 0 0 0.45rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent);
}
.eco-map__sector-title {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2.4vw, 2rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.eco-map__sector-blurb {
  margin: 0;
  max-width: 28rem;
  font-size: 0.92rem;
  line-height: 1.55;
  opacity: 0.88;
  text-wrap: pretty;
}

.eco-map__companies {
  list-style: none;
  margin: 0;
  padding: clamp(0.85rem, 2vw, 1.25rem);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  background: color-mix(in srgb, var(--green-900) 92%, #000);
  overflow: auto;
  max-height: min(28rem, 70vh);
}
.eco-map--ink .eco-map__companies {
  background: color-mix(in srgb, var(--ink) 3%, var(--paper));
}

.eco-map__co {
  border-bottom: 1px solid color-mix(in srgb, var(--cream) 10%, transparent);
}
.eco-map__co:last-child { border-bottom: 0; }
.eco-map--ink .eco-map__co {
  border-bottom-color: color-mix(in srgb, var(--ink) 8%, transparent);
}
.eco-map__co-link {
  display: grid;
  grid-template-columns: 4.25rem minmax(0, 1fr) auto;
  gap: 0.75rem 0.9rem;
  align-items: start;
  padding: 0.85rem 0.65rem;
  border-radius: 10px;
  color: inherit;
  text-decoration: none;
  transition: background 0.2s ease;
}
.eco-map__co-link:hover {
  background: color-mix(in srgb, var(--cream) 8%, transparent);
}
.eco-map--ink .eco-map__co-link:hover {
  background: color-mix(in srgb, var(--green-600) 8%, transparent);
}
.eco-map__co-go {
  opacity: 0.35;
  font-size: 1.1rem;
  padding-top: 0.15rem;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.eco-map__co-link:hover .eco-map__co-go {
  opacity: 0.9;
  transform: translateX(3px);
  color: var(--accent);
}
.eco-map--ink .eco-map__co-link:hover .eco-map__co-go { color: var(--green-600); }
.eco-map__co-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  padding-top: 0.15rem;
}
.eco-map__co-year {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.eco-map--ink .eco-map__co-year { color: var(--green-600); }
.eco-map__co-unit {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.18rem 0.4rem;
  border-radius: 4px;
  color: var(--cream);
  background: color-mix(in srgb, var(--accent) 22%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}
.eco-map--ink .eco-map__co-unit {
  color: var(--green-700);
  background: color-mix(in srgb, var(--green-600) 12%, transparent);
  border-color: color-mix(in srgb, var(--green-600) 28%, transparent);
}
.eco-map__co-body { min-width: 0; }
.eco-map__co-short {
  margin: 0 0 0.2rem;
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.01em;
}
.eco-map__co-name {
  margin: 0 0 0.3rem;
  font-size: 0.78rem;
  line-height: 1.4;
  opacity: 0.62;
}
.eco-map__co-desc {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.5;
  opacity: 0.82;
  text-wrap: pretty;
}
.eco-map--ink .eco-map__co-short { color: var(--ink); }
.eco-map--ink .eco-map__co-name,
.eco-map--ink .eco-map__co-desc { color: var(--ink-soft); opacity: 1; }

@media (max-width: 900px) {
  .eco-map__panel.is-active {
    grid-template-columns: 1fr;
    min-height: 0;
  }
  .eco-map__media { aspect-ratio: 16 / 10; min-height: 0; }
  .eco-map__companies {
    max-height: none;
    padding: 0.65rem 0.85rem 0.85rem;
  }
  .eco-map__tab { min-width: 9.25rem; flex: 0 0 auto; }
  .eco-map__co-link { grid-template-columns: 3.75rem minmax(0, 1fr) auto; }
}
@media (max-width: 720px) {
  .eco-map__tab {
    min-width: 0;
    width: min(62vw, 11.5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .eco-map__panel.is-active { animation: none; }
  .eco-map__tab { transition: none; }
}

/* ─── 04 · Manufacturing ─── */
.manu__grid {
  display: grid; grid-template-columns: 5fr 6fr;
  gap: clamp(2.5rem, 6vw, 5rem); align-items: center;
  margin-bottom: clamp(3rem, 6vw, 4.5rem);
}
.manu__media { aspect-ratio: 16/11; }
.checks { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem 1.6rem; margin-bottom: 2.4rem; }
.checks li { display: flex; align-items: center; gap: 0.8rem; font-weight: 500; font-size: 0.95rem; }
.checks i {
  flex: none; width: 22px; height: 22px; border-radius: 50%;
  background: var(--green-600); position: relative;
}
.checks i::after {
  content: ""; position: absolute; left: 7px; top: 5px;
  width: 5px; height: 9px;
  border-right: 2px solid var(--white); border-bottom: 2px solid var(--white);
  transform: rotate(45deg);
}
.manu__stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.stat--boxed {
  background: var(--white); border: 1px solid rgba(16, 35, 26, 0.09);
  border-radius: 16px; padding: 1.8rem 1.6rem;
  transition: transform 0.45s var(--ease-out), box-shadow 0.45s;
}
.stat--boxed:hover { transform: translateY(-5px); box-shadow: 0 18px 40px -18px rgba(12, 43, 28, 0.25); }
@media (max-width: 900px) {
  .manu__grid { grid-template-columns: 1fr; gap: 1.75rem; }
  .manu__media { order: -1; aspect-ratio: 16/10; }
  .manu__stats { grid-template-columns: repeat(2, 1fr); gap: 0.85rem; }
  .stat--boxed { padding: 1.25rem 1.1rem; }
}
@media (max-width: 520px) {
  .checks { grid-template-columns: 1fr; gap: 0.75rem; }
  .checks li { font-size: 0.9rem; }
}

/* ─── 05 · Products ─── */
.products__hero { aspect-ratio: 21/9; margin-bottom: 1.6rem; }
.products__grid {
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap: 1rem; margin-bottom: 3rem;
}
.pcard {
  background: var(--white); border-radius: 14px;
  border: 1px solid rgba(16, 35, 26, 0.09);
  border-top: 3px solid var(--pc);
  padding: 1.5rem 1.3rem 1.3rem;
  display: flex; flex-direction: column; gap: 0.5rem;
  transition: transform 0.45s var(--ease-out), box-shadow 0.45s;
}
.pcard:hover { transform: translateY(-6px); box-shadow: 0 20px 44px -20px rgba(12, 43, 28, 0.3); }
.pcard__code { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.2em; color: var(--pc); }
.pcard__name { font-family: var(--font-display); font-size: 1.15rem; line-height: 1.3; text-wrap: balance; }
[data-lang="vi"] .pcard__name { font-size: 1.05rem; }
.pcard__arrow { margin-top: auto; padding-top: 1rem; opacity: 0.4; transition: opacity 0.3s, transform 0.4s var(--ease-out); }
.pcard:hover .pcard__arrow { opacity: 1; transform: translateX(5px); }
@media (max-width: 1000px) { .products__grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 700px) {
  .products__hero { aspect-ratio: 16/10; border-radius: 14px; overflow: hidden; }
  .products__grid {
    display: flex; overflow-x: auto; scroll-snap-type: x mandatory;
    gap: 0.85rem; padding-bottom: 0.35rem; margin-bottom: 2rem;
    -webkit-overflow-scrolling: touch; scrollbar-width: none;
  }
  .products__grid::-webkit-scrollbar { display: none; }
  .pcard {
    flex: 0 0 min(70vw, 220px); scroll-snap-align: start;
  }
}

/* ─── 06 · Logistics ─── */
.logi__stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem; margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
  max-width: 900px;
}
.stat--glass {
  background: rgba(244, 241, 234, 0.07);
  border: 1px solid rgba(244, 241, 234, 0.16);
  backdrop-filter: blur(6px);
  border-radius: 16px; padding: 1.9rem 1.7rem;
}
.stat--glass .stat__value { color: var(--accent); }
.stat--glass .stat__label { color: rgba(244, 241, 234, 0.72); }
@media (max-width: 900px) {
  .logi__stats { grid-template-columns: 1fr; max-width: none; gap: 0.85rem; }
  .stat--glass { padding: 1.35rem 1.25rem; }
}
@media (min-width: 601px) and (max-width: 900px) {
  .logi__stats { grid-template-columns: repeat(3, 1fr); }
}

/* ─── 07 · Partner logos ─── */
.partner-marquee,
.marquee {
  overflow: hidden; padding-block: clamp(2rem, 4vw, 3rem);
  border-block: 1px solid rgba(16, 35, 26, 0.1);
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.partner-marquee__track,
.marquee__track {
  display: flex; align-items: center; gap: clamp(1.95rem, 3.9vw, 3.6rem);
  width: max-content;
  animation: marquee 42s linear infinite;
}
.partner-marquee:hover .partner-marquee__track,
.marquee:hover .marquee__track { animation-play-state: paused; }
.partner-logo {
  flex: none;
  display: grid;
  place-items: center;
  width: clamp(11.7rem, 18.2vw, 15rem);
  height: clamp(4.55rem, 7.8vw, 5.85rem);
  padding: 0.45rem 0.95rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(16, 35, 26, 0.08);
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s;
}
.partner-logo:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(8, 31, 20, 0.08);
}
.partner-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.marquee__track span {
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(1.7rem, 3.4vw, 2.7rem);
  color: var(--ink); opacity: 0.42;
  transition: opacity 0.3s; white-space: nowrap;
}
.marquee__track span:hover { opacity: 1; }
.marquee__track i { font-style: normal; color: var(--green-500); font-size: 0.85rem; opacity: 0.7; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ─── 08 · ESG ─── */
.esg__grid {
  display: grid; grid-template-columns: 5fr 6fr;
  gap: clamp(2.5rem, 6vw, 5rem); align-items: start;
}
.esg__media { aspect-ratio: 4/4.4; position: sticky; top: 110px; }
.pillars { display: grid; gap: 1rem; margin-block: 2.2rem; }
.pillar {
  display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto;
  column-gap: 1.4rem; align-items: start;
  background: var(--white); border: 1px solid rgba(16, 35, 26, 0.09);
  border-radius: 16px; padding: 1.6rem 1.7rem;
  transition: transform 0.45s var(--ease-out), box-shadow 0.45s;
}
.pillar:hover { transform: translateX(6px); box-shadow: 0 16px 36px -18px rgba(12, 43, 28, 0.22); }
.pillar__letter {
  grid-row: 1 / 3;
  font-family: var(--font-display); font-weight: 300;
  font-size: 3rem; line-height: 0.9; color: var(--green-600); opacity: 0.85;
}
.pillar h3 { font-family: var(--font-display); font-weight: 500; font-size: 1.25rem; margin-bottom: 0.3rem; }
.pillar p { color: var(--ink-soft); font-size: 0.92rem; }
@media (max-width: 900px) {
  .esg__grid { grid-template-columns: 1fr; gap: 1.75rem; }
  .esg__media { position: static; aspect-ratio: 16/10; order: -1; }
  .pillar { padding: 1.25rem 1.2rem; column-gap: 1rem; }
  .pillar__letter { font-size: 2.4rem; }
  .pillar:hover { transform: none; }
}

/* ─── 09 · Leadership ─── */
.leader__grid {
  display: grid; grid-template-columns: 5fr 6fr;
  gap: clamp(2.5rem, 6vw, 5rem); align-items: center;
}
.leader__media { aspect-ratio: 4/3.2; }
@media (max-width: 900px) {
  .leader__grid { grid-template-columns: 1fr; gap: 1.75rem; }
  .leader__media { order: -1; aspect-ratio: 16/11; }
}

/* ─── 10 · Journey (Leadership title + mockup timeline body) ─── */
.chapter--journey {
  --journey-ink: var(--green-700);
  --journey-card: min(78vw, 300px);
  --journey-card-active: min(86vw, 360px);
}
.journey__head {
  max-width: 42rem;
  margin-bottom: clamp(2.2rem, 4.5vw, 3.25rem);
}
.journey__intro {
  color: var(--ink-soft);
  font-size: clamp(0.95rem, 1.35vw, 1.05rem);
  line-height: 1.65;
  margin-top: 1rem;
  text-wrap: balance;
}
.journey__rule {
  display: block;
  width: 3.2rem;
  height: 3px;
  margin-top: 1.25rem;
  border-radius: 999px;
  background: var(--green-600);
}
.journey-tl {
  --rail-y: 0.7rem;
  position: relative;
  margin-bottom: clamp(2.4rem, 5vw, 3.5rem);
}
.journey-tl__controls {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}
.journey-tl__nav {
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--green-600) 35%, transparent);
  background: var(--white);
  color: var(--green-700);
  display: grid;
  place-items: center;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  transition: background 0.25s, color 0.25s, border-color 0.25s, opacity 0.25s;
}
.journey-tl__nav:hover:not(:disabled) {
  background: var(--green-600);
  border-color: var(--green-600);
  color: var(--white);
}
.journey-tl__nav:disabled {
  opacity: 0.35;
  cursor: default;
}
.journey-tl__nav:focus-visible {
  outline: 2px solid var(--green-600);
  outline-offset: 3px;
}
.journey-tl__stage {
  position: relative;
}
.journey-tl__rail {
  position: absolute;
  top: var(--rail-y);
  left: 0.85rem;
  right: 0.85rem;
  height: 2px;
  background: color-mix(in srgb, var(--green-600) 22%, transparent);
  z-index: 0;
  pointer-events: none;
}
.journey-tl__fill {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--green-600), var(--accent));
  transition: width 0.15s linear;
}
.journey-tl__track {
  list-style: none;
  display: flex;
  align-items: stretch;
  gap: 1rem;
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0 0.15rem 1.1rem;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--green-600) 40%, transparent) transparent;
}
.journey-tl__track:focus-visible {
  outline: 2px solid var(--green-600);
  outline-offset: 4px;
}
.journey-tl__track::-webkit-scrollbar { height: 6px; }
.journey-tl__track::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--green-600) 38%, transparent);
  border-radius: 999px;
}
.jcard {
  display: flex;
  flex-direction: column;
  flex: 0 0 var(--journey-card);
  width: var(--journey-card);
  scroll-snap-align: center;
  transition: flex-basis 0.55s var(--ease-out), width 0.55s var(--ease-out), opacity 0.45s;
  opacity: 0.58;
  cursor: pointer;
}
.jcard.is-active {
  flex-basis: var(--journey-card-active);
  width: var(--journey-card-active);
  opacity: 1;
}
.jcard__meta {
  display: flex;
  align-items: center;
  min-height: calc(var(--rail-y) + 0.85rem);
  margin-bottom: 0.85rem;
  padding-left: 0.15rem;
}
.jcard__marker {
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 50%;
  border: 2px solid var(--green-600);
  background: var(--cream);
  display: grid;
  place-items: center;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--cream) 90%, transparent);
  position: relative;
  z-index: 1;
  transition: background 0.35s, transform 0.35s, box-shadow 0.35s;
}
.jcard__marker span {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--green-600);
  transition: background 0.3s;
}
.jcard.is-active .jcard__marker {
  background: var(--green-600);
  transform: scale(1.15);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--green-600) 18%, transparent);
}
.jcard.is-active .jcard__marker span { background: var(--white); }
.jcard__panel {
  position: relative;
  display: grid;
  flex: 1;
  min-height: clamp(22rem, 48vw, 28rem);
  border-radius: 18px;
  overflow: hidden;
  isolation: isolate;
  background: var(--green-900);
  box-shadow: 0 18px 40px color-mix(in srgb, var(--green-900) 16%, transparent);
  transition: transform 0.55s var(--ease-out), box-shadow 0.55s;
}
.jcard.is-active .jcard__panel {
  transform: translateY(-6px);
  box-shadow: 0 28px 56px color-mix(in srgb, var(--green-900) 24%, transparent);
}
.jcard__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.jcard__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.08);
  filter: saturate(0.78) brightness(0.82);
  transition: transform 1.2s var(--ease-out), filter 0.55s;
}
.jcard.is-active .jcard__media img {
  transform: scale(1.02);
  filter: saturate(1) brightness(0.95);
}
.journey-tl.is-autoplaying .jcard.is-active .jcard__media img {
  animation: journeyKen 4.2s var(--ease-out) forwards;
}
@keyframes journeyKen {
  from { transform: scale(1.08); }
  to { transform: scale(1); }
}
.jcard__panel::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 3;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--cream) 80%, var(--accent)));
  pointer-events: none;
}
.journey-tl.is-autoplaying .jcard.is-active .jcard__panel::after {
  animation: journeyProgress 4.2s linear forwards;
}
@keyframes journeyProgress {
  from { width: 0; }
  to { width: 100%; }
}
.jcard__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--green-900) 8%, transparent) 0%, transparent 38%, color-mix(in srgb, var(--green-900) 78%, transparent) 100%),
    linear-gradient(90deg, color-mix(in srgb, var(--green-900) 35%, transparent), transparent 55%);
  pointer-events: none;
}
.jcard__year {
  position: absolute;
  z-index: 2;
  top: 0.55rem;
  right: 0.55rem;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(3.4rem, 8vw, 5.6rem);
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: color-mix(in srgb, var(--cream) 22%, transparent);
  pointer-events: none;
  transition: color 0.45s, transform 0.55s var(--ease-out);
}
.jcard.is-active .jcard__year {
  color: color-mix(in srgb, var(--cream) 72%, transparent);
  transform: translateY(-0.15rem);
}
.jcard__copy {
  position: relative;
  z-index: 2;
  align-self: end;
  padding: 1.15rem 1.15rem 1.25rem;
  color: var(--cream);
}
.jcard__icon {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--cream);
  background: color-mix(in srgb, var(--green-600) 55%, transparent);
  border: 1px solid color-mix(in srgb, var(--cream) 28%, transparent);
  margin-bottom: 0.7rem;
  backdrop-filter: blur(6px);
}
.jcard__icon svg { width: 1.05rem; height: 1.05rem; }
.jcard__title {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 500;
  line-height: 1.2;
  color: var(--cream);
  margin: 0 0 0.45rem;
  text-wrap: balance;
  max-width: 16ch;
}
[data-lang="vi"] .jcard__title { font-size: clamp(1.05rem, 1.9vw, 1.3rem); line-height: 1.28; max-width: 18ch; }
.jcard__text {
  font-size: 0.8rem;
  line-height: 1.5;
  color: color-mix(in srgb, var(--cream) 78%, transparent);
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--ease-out), opacity 0.4s, margin 0.4s;
}
.jcard.is-active .jcard__text {
  max-height: 8rem;
  opacity: 1;
  margin-top: 0.15rem;
}
[data-lang="vi"] .jcard__text { font-size: 0.78rem; line-height: 1.55; }
.journey-banner {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  min-height: clamp(15.5rem, 27vw, 19.5rem);
  display: grid;
  align-items: stretch;
}
.journey-banner__media,
.journey-banner__overlay { position: absolute; inset: 0; }
.journey-banner__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.journey-banner__overlay {
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--cream) 90%, transparent) 0%, color-mix(in srgb, var(--cream) 58%, transparent) 46%, color-mix(in srgb, var(--cream) 16%, transparent) 100%),
    linear-gradient(180deg, transparent 42%, color-mix(in srgb, var(--green-900) 20%, transparent) 100%);
}
.journey-banner__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(1.25rem, 3vw, 2.4rem);
  align-items: center;
  padding: clamp(1.35rem, 3vw, 2.3rem);
}
.journey-banner__cta {
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: 28rem;
}
.journey-banner__sprout {
  flex-shrink: 0;
  width: 4.1rem;
  height: 4.1rem;
  filter: drop-shadow(0 10px 20px color-mix(in srgb, var(--green-900) 18%, transparent));
}
.journey-banner__sprout svg { width: 100%; height: 100%; }
.journey-banner__cta p {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.12rem, 2vw, 1.5rem);
  line-height: 1.3;
  color: var(--journey-ink);
  font-weight: 500;
  text-wrap: balance;
}
.journey-banner__stats {
  list-style: none;
  margin: 0;
  padding: 1rem 1.05rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem 1rem;
  background: color-mix(in srgb, var(--white) 93%, transparent);
  border: 1px solid color-mix(in srgb, var(--white) 72%, transparent);
  border-radius: 16px;
  backdrop-filter: blur(8px);
  box-shadow: 0 18px 40px color-mix(in srgb, var(--green-900) 12%, transparent);
}
.journey-banner__stats li {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 0.55rem;
  align-items: center;
}
.journey-stat__icon {
  grid-row: 1 / span 2;
  width: 1.35rem;
  height: 1.35rem;
  color: var(--green-600);
}
.journey-stat__icon svg { width: 100%; height: 100%; }
.journey-banner__stats strong {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.1vw, 1.7rem);
  line-height: 1;
  color: var(--journey-ink);
  font-weight: 500;
}
.journey-banner__stats li > span:last-child {
  font-size: 0.72rem;
  color: var(--ink-soft);
  line-height: 1.3;
}
@media (min-width: 1200px) {
  .chapter--journey {
    --journey-card: 280px;
    --journey-card-active: 380px;
  }
  .journey-tl__track { gap: 1.15rem; }
  .jcard__panel { min-height: 30rem; }
}
@media (max-width: 900px) {
  .journey-tl__rail {
    left: 0.5rem;
    right: 0.5rem;
  }
}
@media (max-width: 800px) {
  .journey-banner__inner { grid-template-columns: 1fr; }
  .journey-banner__stats { max-width: 28rem; }
  .chapter--journey {
    --journey-card: min(72vw, 270px);
    --journey-card-active: min(84vw, 320px);
  }
}
@media (max-width: 480px) {
  .journey-tl__controls { margin-bottom: 0.6rem; }
  .journey-banner__cta { align-items: flex-start; }
  .journey-banner__sprout { width: 3.35rem; height: 3.35rem; }
  .journey-banner__stats { grid-template-columns: 1fr; }
  .jcard__panel { min-height: 22rem; }
  .jcard__year { font-size: 3.2rem; }
  .jcard.is-active .jcard__text { max-height: 9rem; }
}
@media (prefers-reduced-motion: reduce) {
  .jcard,
  .jcard__panel,
  .jcard__media img,
  .jcard__marker,
  .jcard__year,
  .jcard__text,
  .journey-tl__fill { transition: none !important; }
  .jcard.is-active .jcard__panel,
  .jcard.is-active .jcard__media img,
  .jcard.is-active .jcard__marker,
  .jcard.is-active .jcard__year { transform: none; }
  .journey-tl.is-autoplaying .jcard.is-active .jcard__media img,
  .journey-tl.is-autoplaying .jcard.is-active .jcard__panel::after {
    animation: none !important;
  }
}

/* ─── 11 · News ─── */
.news__grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem; margin-bottom: 3rem;
}
.ncard { display: flex; flex-direction: column; gap: 0.7rem; }
.ncard__media {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 0.5rem;
  width: 100%;
  max-width: 100%;
  background: color-mix(in srgb, var(--green-900) 8%, var(--paper));
}
.ncard__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center;
  transition: transform 1s var(--ease-out);
}
.ncard:hover .ncard__media img { transform: scale(1.06); }
.ncard__cat {
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--green-600);
}
.ncard h3 {
  font-family: var(--font-display); font-weight: 500;
  font-size: 1.25rem; line-height: 1.35;
  transition: color 0.3s;
  text-wrap: balance;
}
[data-lang="vi"] .ncard h3 { font-size: 1.15rem; line-height: 1.45; }
.ncard:hover h3 { color: var(--green-600); }
.ncard__excerpt {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--ink-soft);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.ncard__more { font-size: 0.82rem; font-weight: 600; opacity: 0.6; transition: opacity 0.3s; }
.ncard:hover .ncard__more { opacity: 1; }
@media (max-width: 900px) {
  .news__grid { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; gap: 1.75rem; }
  .ncard h3 { font-size: 1.15rem; }
}
@media (min-width: 701px) and (max-width: 900px) {
  .news__grid { grid-template-columns: repeat(2, 1fr); max-width: none; }
  .news__grid .ncard:last-child { grid-column: 1 / -1; max-width: 420px; }
}

/* ─── 12 · CTA ─── */
.cta { color: var(--cream); text-align: center; padding-block: clamp(5.5rem, 14vh, 14rem); }
.cta__inner { display: grid; justify-items: center; width: 100%; }
.cta .chapter__num { margin-bottom: 0.05em; }
.cta__actions {
  display: flex; flex-wrap: wrap; gap: 0.85rem; justify-content: center;
  margin-top: clamp(1.75rem, 4vw, 2.8rem); width: 100%;
}

/* ─── Footer ─── */
.footer { background: var(--green-900); color: color-mix(in srgb, var(--cream) 82%, transparent); padding-block: clamp(4rem, 8vw, 6rem) 2.4rem; }
.footer__quote {
  font-family: var(--font-display); font-style: italic; font-weight: 300;
  font-size: clamp(1.5rem, 3.4vw, 2.5rem); line-height: 1.3;
  color: var(--cream); text-align: center;
  max-width: 26ch; margin: 0 auto clamp(3rem, 6vw, 4.5rem);
}
.footer__grid {
  display: grid; grid-template-columns: 1.2fr 1fr 1fr;
  gap: 2.5rem; align-items: start;
  border-top: 1px solid rgba(244, 241, 234, 0.12);
  padding-top: 2.8rem; margin-bottom: 2.8rem;
}
.footer__brand { display: flex; align-items: center; gap: 1rem; font-weight: 700; letter-spacing: 0.2em; font-size: 0.85rem; }
.footer__logo { width: 74px; height: auto; flex: none; }
.footer__nav { display: grid; gap: 0.7rem; font-size: 0.9rem; }
.footer__nav a { opacity: 0.72; transition: opacity 0.3s; }
.footer__nav a:hover { opacity: 1; }
.footer__contact { display: grid; gap: 0.5rem; font-size: 0.9rem; opacity: 0.72; }
.footer__copy { text-align: center; font-size: 0.75rem; opacity: 0.45; letter-spacing: 0.06em; }
@media (max-width: 720px) {
  .footer__grid { grid-template-columns: 1fr; gap: 1.75rem; }
  .footer__quote { margin-bottom: 2rem; }
}

/* ═══════════════════════════════════════════
   Responsive polish — tablet / mobile / small
   ═══════════════════════════════════════════ */

@media (max-width: 1100px) {
  .chapter__num { font-size: clamp(3rem, 12vw, 5.5rem); }
  .eyebrow { letter-spacing: 0.22em; margin-bottom: 1.15rem; }
  .eyebrow::before { width: 22px; }
}

@media (max-width: 768px) {
  :root {
    --pad-y: clamp(3.5rem, 9vh, 5.5rem);
    --header-h: 64px;
  }

  .chapter__head { margin-bottom: 2rem; }
  .chapter__title { margin-bottom: 1.15rem; line-height: 1.1; }
  .lead { font-size: 1.05rem; margin-bottom: 1rem; }
  .body-text { margin-bottom: 1.5rem; }
  .stat__value { font-size: clamp(2rem, 9vw, 2.75rem); }
  .stat__label { font-size: 0.65rem; letter-spacing: 0.14em; }

  .btn {
    padding: 0.85rem 1.35rem; font-size: 0.8rem;
    max-width: 100%;
  }
  .btn--big {
    width: min(100%, 320px);
    justify-content: center;
    padding: 1rem 1.5rem;
  }
  .cta__actions { flex-direction: column; align-items: stretch; }
  .cta__actions .btn { width: 100%; max-width: 360px; margin-inline: auto; }

  .reveal-img { border-radius: 14px; }
  .loader__word { letter-spacing: 0.28em; font-size: 0.78rem; text-align: center; padding-inline: 1rem; }
}

@media (max-width: 480px) {
  .header__logo-mark { width: 44px; }
  .header__logo-text { max-width: min(9rem, 42vw); font-size: 0.62rem; }
  .lang-switch__toggle { min-height: 2rem; padding-inline: 0.45rem 0.5rem; }
  .lang-switch__code { min-width: 0; }
  .hero__desc { font-size: 0.95rem; }
  .chapter__desc { font-size: 0.95rem; }
  .products__grid .pcard { flex-basis: min(78vw, 240px); }
  .flow__step { flex-basis: min(80vw, 280px); }
  .footer__brand { flex-wrap: wrap; font-size: 0.75rem; }
}

/* Landscape phones */
@media (max-height: 480px) and (orientation: landscape) {
  .hero { min-height: auto; padding-block: 5rem 3rem; align-items: center; }
  .hero__scroll { display: none; }
  .header__nav { gap: 0.85rem; font-size: 1.15rem; overflow-y: auto; }
}

/* Prefer reduced data / coarse pointers: lighter sticky/parallax cost */
@media (max-width: 900px) {
  .about__media, .esg__media { position: static; }
  .chapter__bg img, .hero__img { will-change: auto; }
}