:root {
  --bg: #f4efe7;
  --surface: #fbf8f3;
  --surface-strong: #ffffff;
  --ink: #131313;
  --muted: #5d5d5d;
  --muted-dark: #a5a5a5;
  --line: rgba(19, 19, 19, 0.12);
  --yellow: #f5c400;
  --yellow-deep: #e5b000;
  --yellow-soft: #ffd94a;
  --black: #050505;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.14);
  --radius-xl: 36px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --shell: min(1180px, calc(100vw - 48px));
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Be Vietnam Pro", sans-serif;
  text-rendering: optimizeLegibility;
}

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

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

button,
input {
  font: inherit;
}

.shell {
  width: var(--shell);
  margin: 0 auto;
}

.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;
}

/* ============ HEADER ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(18px);
  background: rgba(251, 248, 243, 0.92);
  border-bottom: 1px solid rgba(19, 19, 19, 0.06);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 82px;
}

.brand img {
  width: 150px;
  height: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.95rem;
  font-weight: 500;
}

.main-nav a {
  position: relative;
  opacity: 0.88;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 2px;
  background: var(--yellow);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms ease;
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
}

/* ============ BUTTONS ============ */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 28px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: -0.02em;
  transition: transform 220ms ease, background-color 220ms ease, border-color 220ms ease,
    color 220ms ease, box-shadow 220ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--yellow);
  color: var(--ink);
  box-shadow: 0 16px 30px rgba(245, 196, 0, 0.22);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--yellow-deep);
}

.button-outline {
  border-color: rgba(19, 19, 19, 0.18);
  background: transparent;
}

.button-outline:hover,
.button-outline:focus-visible {
  background: rgba(19, 19, 19, 0.05);
}

.button-sm {
  min-height: 44px;
  padding: 0 20px;
  font-size: 0.9rem;
}

.button-square {
  min-width: 60px;
  padding: 0;
  border-radius: 0;
  font-size: 1.7rem;
  box-shadow: none;
}

.button-footer {
  border-color: rgba(255, 255, 255, 0.38);
  color: #fff;
}

.button-footer:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* ============ HERO ============ */
.hero {
  position: relative;
  overflow: hidden;
  background: #f4efe7;
}

.hero-bg {
  display: block;
  width: 100%;
  height: auto;
}

.hero-inner {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
}

.hero-kicker {
  font-family: "Montserrat", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 12px;
}

.hero h1 {
  margin: 0 0 32px;
  font-family: "Montserrat", sans-serif;
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--ink);
}

/* ============ SECTION BASE ============ */
.section {
  position: relative;
  padding: 110px 0;
}

.section-dark {
  background: #0a0a0a;
  color: #fff;
}

.section-sand {
  background: #e9e5dd;
  color: var(--ink);
}

.section-light {
  background: #ffffff;
  color: var(--ink);
}

.section-black {
  background: #050505;
  color: #fff;
}

.block-title {
  margin: 0 0 24px;
  font-family: "Montserrat", sans-serif;
  font-size: clamp(1.7rem, 2.8vw, 2.4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: inherit;
}

.section-dark .block-title {
  color: #fff;
}

.section-sand .block-title,
.section-light .block-title {
  color: var(--ink);
}

.content-block p {
  margin: 0 0 14px;
  max-width: 58ch;
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.64);
}

.section-sand .content-block p,
.section-light .content-block p {
  color: #6b6b6b;
}

.content-block .button {
  margin-top: 24px;
}

/* ============ SPLIT GRIDS ============ */
.split-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}

.split-grid-features {
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  align-items: start;
}

.media-frame {
  position: relative;
  overflow: hidden;
  min-height: 420px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-tall {
  min-height: 620px;
}

/* ============ FEATURE LIST ============ */
.feature-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 30px;
}

.feature-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 18px;
  align-items: start;
}

.feature-item img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.feature-item h3 {
  margin: 0 0 8px;
  font-family: "Montserrat", sans-serif;
  font-size: 0.98rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink);
}

.feature-item p {
  margin: 0;
  color: #7a7a7a;
  font-size: 0.88rem;
  line-height: 1.65;
  max-width: 42ch;
}

/* ============ IMPACT / TỰ HÀO THƯƠNG HIỆU XANH ============ */
.impact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  gap: 0;
  align-items: stretch;
  position: relative;
}

.impact-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 24px;
}

.impact-copy .block-title {
  margin: 0;
}

.impact-yellow-card {
  padding: 44px 40px;
  background: var(--yellow);
  color: var(--ink);
  text-align: center;
  margin-right: -90px;
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.impact-yellow-card p {
  margin: 0 auto;
  max-width: 44ch;
  color: var(--ink);
  font-size: 0.95rem;
  line-height: 1.75;
  font-weight: 500;
}

.impact-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin-top: 0;
  position: relative;
  z-index: 3;
}

.impact-tile {
  position: relative;
  min-height: 140px;
  padding: 24px 56px 24px 26px;
  display: flex;
  align-items: center;
  overflow: hidden;
  transition: background 220ms ease, transform 220ms ease;
}

.impact-tile::after {
  content: "→";
  position: absolute;
  right: 22px;
  bottom: 18px;
  font-size: 1.6rem;
  font-weight: 300;
  transition: transform 220ms ease;
}

.impact-tile:hover::after,
.impact-tile:focus-visible::after {
  transform: translateX(4px);
}

.impact-tile span {
  max-width: 22ch;
  font-family: "Montserrat", sans-serif;
  font-size: 0.86rem;
  font-weight: 700;
  line-height: 1.35;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.impact-tile-dark {
  background: var(--black);
  color: #fff;
}

.impact-tile-dark:hover {
  background: #1a1a1a;
}

.impact-tile-muted {
  background: #6e6e70;
  color: #fff;
}

.impact-tile-muted:hover {
  background: #7a7a7c;
}

.impact-media {
  overflow: hidden;
  min-height: 520px;
  position: relative;
  align-self: stretch;
}

.impact-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

/* ============ VIDEO SECTION ============ */
.video-section {
  background: #cccccc;
  padding: 30px 0 70px;
}

.video-card {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
  border-radius: var(--radius-lg);
  background: #1a1a1a;
  background-image:
    radial-gradient(circle at center, rgba(255, 255, 255, 0.06), transparent 60%);
  transition: transform 220ms ease;
}

.video-card:hover {
  transform: translateY(-3px);
}

.play-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 140px;
  height: 98px;
  border-radius: 26px;
  background: #ff0000;
  box-shadow: 0 28px 64px rgba(255, 0, 0, 0.35);
  transition: background 220ms ease, transform 220ms ease;
}

.video-card:hover .play-button {
  background: #e60000;
  transform: scale(1.05);
}

.play-triangle {
  width: 0;
  height: 0;
  margin-left: 6px;
  border-top: 22px solid transparent;
  border-bottom: 22px solid transparent;
  border-left: 34px solid #fff;
}

/* ============ COLLECTIONS ============ */
.collections-head {
  max-width: 780px;
  margin: 0 auto 48px;
  text-align: center;
}

.collections-head h2 {
  color: #fff;
  text-transform: uppercase;
  margin: 0 0 20px 0;
  font-size: 24px;
}

.collections-head .section-kicker {
  justify-content: center;
  margin-bottom: 5px;
  text-transform: uppercase;
  font-size: 24px;
  display: block;
}

.collection-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.collection-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 100%;
  border-radius: var(--radius-md);
  background: #141414;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: transform 220ms ease, border-color 220ms ease;
}

.collection-card:hover,
.collection-card:focus-within {
  transform: translateY(-6px);
  border-color: rgba(245, 196, 0, 0.42);
}

.collection-media {
  aspect-ratio: 1.55;
  overflow: hidden;
}

.collection-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.collection-copy {
  padding: 22px 24px 26px;
}

.collection-copy h3 {
  margin: 0 0 10px;
  font-family: "Montserrat", sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
}

.collection-copy p {
  margin: 0 0 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
  font-size: 0.94rem;
}

.collection-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--yellow);
  font-family: "Montserrat", sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============ NEWSLETTER ============ */
.newsletter {
  position: relative;
  background:
    linear-gradient(180deg, rgba(4, 15, 23, 0.15), rgba(4, 15, 23, 0.15)),
    url("https://bizweb.dktcdn.net/100/349/716/themes/1036464/assets/bannerbottom.jpg") center center / cover no-repeat;
}

.newsletter-overlay {
  padding: 120px 0;
}

.newsletter-content {
  text-align: center;
  max-width: 820px;
}

.newsletter-content h2 {
  color: var(--ink);
  font-family: "Montserrat", sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 0 0 32px;
}

.newsletter-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0;
  width: min(560px, 100%);
  margin: 0 auto;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.2);
}

.newsletter-form input {
  min-width: 0;
  min-height: 60px;
  padding: 0 24px;
  border: 0;
  background: transparent;
  font-size: 1rem;
}

.newsletter-form input:focus {
  outline: none;
}

.newsletter-form .button-square {
  min-height: 60px;
  min-width: 70px;
}

.form-status {
  min-height: 28px;
  margin-top: 18px;
  color: var(--ink);
  font-weight: 600;
}

/* ============ FOOTER ============ */
.site-footer {
  background: var(--black);
  color: #fff;
  padding: 38px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
}

.footer-brand img {
  width: 150px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.contact-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.88rem;
}

.contact-chip img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

/* ============ ANIMATION ============ */
.reveal {
  animation: reveal-up 640ms ease both;
}

@keyframes reveal-up {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1120px) {
  .main-nav {
    display: none;
  }

  .split-grid,
  .impact-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .impact-copy {
    gap: 0;
  }

  .impact-copy .block-title {
    margin-bottom: 20px;
  }

  .impact-yellow-card {
    margin-right: 0;
    padding: 44px 32px;
    min-height: auto;
  }

  .impact-media {
    min-height: 420px;
    order: -1;
    margin-bottom: 28px;
  }

  .collection-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 820px) {
  :root {
    --shell: min(100vw - 32px, 100%);
  }

  .hero,
  .hero-inner {
    min-height: 420px;
  }

  .hero {
    background-position: 60% center;
  }

  .section {
    padding: 72px 0;
  }

  .hero h1 {
    font-size: clamp(2rem, 9vw, 3rem);
  }

  .content-block h2,
  .collections-head h2,
  .newsletter-content h2 {
    font-size: clamp(1.6rem, 5vw, 2.2rem);
  }

  .impact-links,
  .collection-grid {
    grid-template-columns: 1fr;
  }

  .impact-yellow-card {
    padding: 32px 22px;
    min-height: auto;
    margin-right: 0;
    box-shadow: none;
  }

  .impact-yellow-card p {
    font-size: 0.9rem;
    line-height: 1.7;
  }

  .impact-tile {
    min-height: 110px;
    padding: 22px 56px 22px 22px;
  }

  .impact-tile::after {
    font-size: 1.4rem;
    right: 18px;
    bottom: 14px;
  }

  .impact-tile span {
    font-size: 0.8rem;
    max-width: 100%;
  }

  .media-frame,
  .media-tall {
    min-height: 320px;
  }

  .impact-media {
    min-height: 280px;
    margin-bottom: 24px;
    border-radius: var(--radius-md);
  }

  .impact-media img {
    border-radius: inherit;
  }

  .video-card {
    min-height: 240px;
  }

  .play-button {
    width: 110px;
    height: 78px;
  }

  .play-triangle {
    border-top-width: 18px;
    border-bottom-width: 18px;
    border-left-width: 28px;
  }

  .newsletter-overlay {
    padding: 80px 0;
  }

  .footer-links {
    flex-direction: column;
    align-items: stretch;
  }

  .contact-chip {
    justify-content: center;
  }
}

@media (max-width: 560px) {
  :root {
    --shell: min(100vw - 20px, 100%);
    --radius-xl: 24px;
    --radius-lg: 20px;
    --radius-md: 16px;
  }

  .brand img {
    width: 110px;
  }

  .header-row {
    min-height: 64px;
    gap: 10px;
  }

  .site-header .button-sm {
    min-height: 38px;
    padding: 0 14px;
    font-size: 0.82rem;
  }

  .hero h1 {
    font-size: 2.1rem;
  }

  .section {
    padding: 56px 0;
  }

  .feature-item {
    grid-template-columns: 48px 1fr;
    gap: 14px;
  }

  .feature-item img {
    width: 44px;
    height: 44px;
  }

  .impact-yellow-card {
    padding: 26px 18px;
  }

  .impact-yellow-card p {
    font-size: 0.88rem;
  }

  .impact-yellow-card .section-kicker {
    font-size: 1.15rem;
  }

  .impact-tile {
    min-height: 96px;
    padding: 18px 50px 18px 18px;
  }

  .impact-tile span {
    font-size: 0.76rem;
  }

  .impact-tile::after {
    font-size: 1.25rem;
    right: 16px;
    bottom: 12px;
  }

  .impact-media {
    min-height: 240px;
  }

  .collection-media {
    aspect-ratio: 1.3;
  }

  .newsletter-form input {
    min-height: 52px;
    padding: 0 18px;
  }

  .newsletter-form .button-square {
    min-height: 52px;
    min-width: 58px;
    font-size: 1.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
    animation: none;
  }
}