/* ============================================================
   DELANG OFFICIAL WEBSITE — CI Design System
   Brand Colors from Delang Branding Book:
   Primary #2E2E2E (60%) · Secondary #EAE9E9 (30%) · Accent #DE1F26 (10%)
   Font: Futura (western) + PingFang SC / Source Han Sans CN (chinese)
   ============================================================ */

:root {
  /* CI Palette */
  --dl-black: #2E2E2E;
  --dl-black-solid: #0A0A0A;
  --dl-gray-light: #EAE9E9;
  --dl-gray-mid: #999999;
  --dl-gray-bg: #F8F6F6;
  --dl-red: #DE1F26;
  --dl-white: #FFFFFF;
  --dl-border: #E4E2E2;

  /* Typography */
  --font-en: 'Futura', 'Century Gothic', 'Avenir Next', 'Helvetica Neue', Arial, sans-serif;
  --font-zh: 'PingFang SC', 'Source Han Sans CN', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  --font-display: var(--font-en), var(--font-zh);

  /* Layout */
  --container: 1200px;
  --nav-h: 76px;
  --section-pad: 110px 0;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-display);
  color: var(--dl-black);
  background: var(--dl-white);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

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

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; letter-spacing: -0.01em; }

.display-xl {
  font-size: clamp(48px, 7vw, 92px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  text-transform: uppercase;
}

.display-lg {
  font-size: clamp(34px, 4.5vw, 58px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-transform: uppercase;
}

.h2-title {
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.01em;
}

.lead {
  font-size: clamp(16px, 1.6vw, 20px);
  line-height: 1.7;
  color: var(--dl-black);
  opacity: 0.85;
}

.small-note {
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dl-gray-mid);
  font-weight: 600;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}

.section { padding: var(--section-pad); position: relative; }
.section--gray { background: var(--dl-gray-bg); }
.section--dark { background: var(--dl-black); color: var(--dl-white); }
.section--red { background: var(--dl-red); color: var(--dl-white); }

/* CI section header: thin line + small label + title */
.section-head { margin-bottom: 64px; }
.section-head .ci-line {
  display: block;
  width: 80px;
  height: 2px;
  background: var(--dl-black);
  margin-bottom: 24px;
}
.section--dark .ci-line { background: var(--dl-white); }
.section--red .ci-line { background: var(--dl-white); }
.section-head .h2-title { margin-top: 12px; }
.section-head .lead { margin-top: 20px; max-width: 640px; }

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--dl-border);
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}
.nav.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.nav--dark { background: rgba(10,10,10,0.94); border-bottom-color: #222; }

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  height: 100%;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand svg { width: 34px; height: 34px; }
.brand-name {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--dl-black);
}
.nav--dark .brand-name { color: var(--dl-white); }
.brand-slogan {
  font-size: 8px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--dl-gray-mid);
  font-weight: 600;
  margin-top: 2px;
  display: block;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-menu a {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dl-black);
  opacity: 0.85;
  position: relative;
  padding: 6px 0;
  transition: opacity 0.25s ease;
}
.nav--dark .nav-menu a { color: var(--dl-white); }
.nav-menu a:hover { opacity: 1; }
.nav-menu a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--dl-red);
  transition: width 0.3s ease;
}
.nav-menu a:hover::after,
.nav-menu a.active::after { width: 100%; }
.nav-menu a.active { opacity: 1; }

/* Language switcher */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--dl-border);
  border-radius: 4px;
  padding: 4px;
  flex-shrink: 0;
}
.nav--dark .lang-switch { border-color: #444; }
.lang-switch button {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: 2px;
  color: var(--dl-gray-mid);
  transition: all 0.25s ease;
}
.lang-switch button.active {
  background: var(--dl-black);
  color: var(--dl-white);
}
.nav--dark .lang-switch button.active { background: var(--dl-white); color: var(--dl-black); }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--dl-black);
  transition: all 0.3s ease;
}
.nav--dark .nav-toggle span { background: var(--dl-white); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--dl-black);
  color: var(--dl-white);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.55;
  mix-blend-mode: luminosity;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(10,10,10,0.92) 0%, rgba(10,10,10,0.55) 45%, rgba(10,10,10,0.25) 100%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: calc(var(--nav-h) + 60px) 40px 80px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
}
.hero-tag .line { width: 64px; height: 2px; background: var(--dl-red); }
.hero-tag span {
  font-size: 13px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--dl-gray-light);
  font-weight: 600;
}
.hero-title { text-transform: uppercase; }
.hero-title .red { color: var(--dl-red); }
.hero-desc {
  margin-top: 28px;
  max-width: 560px;
  font-size: 18px;
  line-height: 1.75;
  color: var(--dl-gray-light);
  opacity: 0.9;
}
.hero-cta {
  margin-top: 48px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 36px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-radius: 0;
  transition: all 0.3s ease;
}
.btn--red { background: var(--dl-red); color: var(--dl-white); }
.btn--red:hover { background: #b5131a; transform: translateY(-2px); }
.btn--outline { border: 1px solid rgba(255,255,255,0.5); color: var(--dl-white); }
.btn--outline:hover { border-color: var(--dl-white); background: rgba(255,255,255,0.08); transform: translateY(-2px); }
.btn--dark { background: var(--dl-black); color: var(--dl-white); }
.btn--dark:hover { background: #1a1a1a; transform: translateY(-2px); }
.btn--line { border: 1px solid var(--dl-black); color: var(--dl-black); }
.btn--line:hover { background: var(--dl-black); color: var(--dl-white); transform: translateY(-2px); }

/* Hero stats strip */
.hero-stats {
  margin-top: 72px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  border-top: 1px solid rgba(255,255,255,0.16);
  padding-top: 40px;
  max-width: 860px;
}
.stat-num {
  font-size: clamp(34px, 3.4vw, 52px);
  font-weight: 700;
  line-height: 1;
  color: var(--dl-white);
}
.stat-num .red { color: var(--dl-red); }
.stat-label {
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dl-gray-mid);
  font-weight: 600;
}

/* ---------- Marquee / slogan strip ---------- */
.marquee {
  background: var(--dl-red);
  color: var(--dl-white);
  overflow: hidden;
  padding: 20px 0;
}
.marquee-track {
  display: flex;
  white-space: nowrap;
  animation: marquee 28s linear infinite;
}
.marquee span {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  padding: 0 32px;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- About preview / feature grid ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.split-media { position: relative; }
.split-media img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  filter: grayscale(0.25) contrast(1.04);
  transition: filter 0.5s ease, transform 0.6s ease;
}
.split-media:hover img { filter: grayscale(0) contrast(1); transform: scale(1.015); }
.split-media .frame {
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(255,255,255,0.5);
  pointer-events: none;
}
.split-media .badge {
  position: absolute;
  right: -14px;
  bottom: 34px;
  background: var(--dl-red);
  color: var(--dl-white);
  padding: 14px 24px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.split-body .ci-line { width: 80px; height: 2px; background: var(--dl-red); margin-bottom: 28px; }
.split-body h2 { margin-bottom: 24px; }
.split-body p { margin-bottom: 18px; color: rgba(46,46,46,0.82); }
.split-body .btn { margin-top: 16px; }

/* ---------- Stats / numbers band ---------- */
.numbers-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px;
  text-align: center;
}
.numbers-band .num {
  font-size: clamp(40px, 4.6vw, 68px);
  font-weight: 700;
  color: var(--dl-white);
  line-height: 1;
}
.numbers-band .num .red { color: var(--dl-red); }
.numbers-band .lbl {
  margin-top: 12px;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dl-gray-mid);
  font-weight: 600;
}
.numbers-band .cell { position: relative; }
.numbers-band .cell:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -24px;
  top: 20%;
  height: 60%;
  width: 1px;
  background: rgba(255,255,255,0.14);
}

/* ---------- Product cards ---------- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.product-card {
  background: var(--dl-white);
  border: 1px solid var(--dl-border);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 44px rgba(46,46,46,0.10);
}
.product-card .thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--dl-gray-bg);
}
.product-card .thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.product-card:hover .thumb img { transform: scale(1.06); }
.product-card .num {
  position: absolute;
  top: 16px; left: 16px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--dl-white);
  background: var(--dl-black);
  padding: 6px 12px;
}
.product-card .info { padding: 26px 28px 30px; }
.product-card .info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.01em;
}
.product-card .info p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--dl-gray-mid);
}
.product-card .info .tag {
  display: inline-block;
  margin-top: 16px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dl-red);
  border-bottom: 1px solid var(--dl-red);
  padding-bottom: 2px;
}

/* ---------- Capability cards ---------- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.cap-card { position: relative; overflow: hidden; }
.cap-card img {
  width: 100%;
  height: 460px;
  object-fit: cover;
  filter: grayscale(0.35) contrast(1.05);
  transition: transform 0.7s ease, filter 0.5s ease;
}
.cap-card:hover img { transform: scale(1.05); filter: grayscale(0); }
.cap-card .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10,10,10,0.88) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 30px;
}
.cap-card .overlay .no {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--dl-red);
  margin-bottom: 10px;
}
.cap-card .overlay h3 {
  color: var(--dl-white);
  font-size: 24px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.cap-card .overlay p {
  color: rgba(255,255,255,0.72);
  font-size: 14px;
  line-height: 1.6;
}

/* ---------- Customers ---------- */
.customers-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.cust-card {
  border: 1px solid var(--dl-border);
  padding: 40px 36px;
  background: var(--dl-white);
  transition: all 0.35s ease;
}
.cust-card:hover { border-color: var(--dl-black); box-shadow: 0 14px 36px rgba(46,46,46,0.08); }
.cust-card .region {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--dl-red);
  margin-bottom: 18px;
}
.cust-card h3 { font-size: 22px; margin-bottom: 10px; }
.cust-card .brands { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.cust-card .brands span {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: var(--dl-gray-bg);
  border: 1px solid var(--dl-border);
  padding: 6px 14px;
}
.cust-card p { font-size: 14px; color: var(--dl-gray-mid); line-height: 1.7; }

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--dl-black);
  color: var(--dl-white);
  text-align: center;
  padding: 100px 0;
}
.cta-band .ci-line {
  width: 80px; height: 2px;
  background: var(--dl-red);
  margin: 0 auto 28px;
}
.cta-band h2 { text-transform: uppercase; margin-bottom: 20px; }
.cta-band p { color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 40px; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: var(--dl-black);
  color: var(--dl-white);
  padding: calc(var(--nav-h) + 90px) 0 90px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: 0; right: -120px;
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(222,31,38,0.22) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero .ci-line { width: 80px; height: 2px; background: var(--dl-red); margin-bottom: 26px; }
.page-hero h1 { text-transform: uppercase; }
.page-hero p { margin-top: 20px; max-width: 640px; color: rgba(255,255,255,0.75); font-size: 18px; }

/* ---------- Content blocks ---------- */
.content-block { padding: 100px 0; }
.content-block--gray { background: var(--dl-gray-bg); }
.content-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.content-row p { margin-bottom: 16px; color: rgba(46,46,46,0.82); }
.content-row h3 { margin: 28px 0 14px; font-size: 22px; }

/* Timeline */
.timeline { position: relative; padding-left: 40px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 10px; top: 6px; bottom: 6px;
  width: 1px;
  background: var(--dl-border);
}
.timeline .item { position: relative; padding-bottom: 40px; }
.timeline .item::before {
  content: '';
  position: absolute;
  left: -40px; top: 8px;
  width: 10px; height: 10px;
  background: var(--dl-red);
  border-radius: 50%;
}
.timeline .year {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dl-red);
  margin-bottom: 6px;
}
.timeline .item h4 { font-size: 20px; margin-bottom: 8px; }
.timeline .item p { font-size: 15px; color: var(--dl-gray-mid); line-height: 1.7; }

/* Product detail list (products page) */
.product-line {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.line-card {
  border: 1px solid var(--dl-border);
  padding: 36px;
  position: relative;
  transition: all 0.35s ease;
  background: var(--dl-white);
}
.line-card:hover { border-color: var(--dl-black); transform: translateY(-4px); }
.line-card .no {
  font-size: 42px;
  font-weight: 700;
  color: var(--dl-gray-light);
  line-height: 1;
  margin-bottom: 18px;
  transition: color 0.3s ease;
}
.line-card:hover .no { color: var(--dl-red); }
.line-card h3 { font-size: 20px; margin-bottom: 12px; text-transform: uppercase; }
.line-card p { font-size: 14px; color: var(--dl-gray-mid); line-height: 1.7; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
}
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.contact-form label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dl-gray-mid);
  margin-bottom: 6px;
  display: block;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--dl-border);
  border-radius: 0;
  padding: 14px 16px;
  font-family: inherit;
  font-size: 15px;
  background: var(--dl-white);
  color: var(--dl-black);
  transition: border-color 0.3s ease;
  outline: none;
}
.contact-form input:focus,
.contact-form textarea:focus { border-color: var(--dl-black); }
.contact-form textarea { min-height: 140px; resize: vertical; }
.contact-info .info-item { padding: 22px 0; border-bottom: 1px solid var(--dl-border); display: flex; gap: 20px; align-items: flex-start; }
.contact-info .info-item .ic { flex-shrink: 0; width: 42px; height: 42px; background: var(--dl-black); display: flex; align-items: center; justify-content: center; }
.contact-info .info-item .ic svg { width: 20px; height: 20px; stroke: var(--dl-white); fill: none; stroke-width: 1.6; }
.contact-info .info-item .lbl { font-size: 12px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--dl-gray-mid); margin-bottom: 6px; }
.contact-info .info-item .val { font-size: 16px; font-weight: 600; }

/* ---------- Footer ---------- */
.footer {
  background: var(--dl-black-solid);
  color: var(--dl-white);
  padding: 80px 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer .brand svg { fill: var(--dl-white); }
.footer .brand-name { color: var(--dl-white); }
.footer .fdesc {
  margin-top: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
  max-width: 300px;
}
.footer h4 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dl-gray-mid);
  margin-bottom: 22px;
}
.footer ul li { margin-bottom: 12px; }
.footer ul a {
  font-size: 14px;
  color: rgba(255,255,255,0.72);
  transition: color 0.25s ease, padding-left 0.25s ease;
}
.footer ul a:hover { color: var(--dl-red); padding-left: 6px; }
.footer .fcontact li { font-size: 14px; color: rgba(255,255,255,0.72); margin-bottom: 14px; display: flex; gap: 10px; align-items: flex-start; }
.footer-bottom {
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-bottom .copy { font-size: 13px; color: rgba(255,255,255,0.42); }
.footer-bottom .slogan { font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase; color: rgba(255,255,255,0.5); font-weight: 600; }
.footer-bottom .slogan .red { color: var(--dl-red); }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: 46px; height: 46px;
  background: var(--dl-black);
  color: var(--dl-white);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 900;
  transform: translateY(12px);
}
.to-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.to-top:hover { background: var(--dl-red); }
.to-top svg { width: 18px; height: 18px; stroke: var(--dl-white); fill: none; stroke-width: 2; }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .split { grid-template-columns: 1fr; gap: 48px; }
  .products-grid, .cap-grid, .customers-band, .product-line { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .container { padding: 0 24px; }
  .section { padding: 80px 0; }
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--dl-white);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 40px 32px;
    gap: 20px;
    border-bottom: 1px solid var(--dl-border);
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    z-index: 999;
  }
  .nav--dark .nav-menu { background: var(--dl-black-solid); }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu a { font-size: 16px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .numbers-band { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .products-grid, .cap-grid, .customers-band, .product-line { grid-template-columns: 1fr; }
  .split-media img { height: 360px; }
  .cap-card img { height: 360px; }
  .footer-top { grid-template-columns: 1fr; gap: 36px; }
  .brand-slogan { display: none; }
}