/* ============================================================
   style.css — Máy Tẩy Rửa Siêu Âm Minh Chất
   REDESIGN v2 — Premium Industrial B2B
   https://maytayruasieuam.vn
   ============================================================ */

/* ============================================================
   1. DESIGN TOKENS
   ============================================================ */
:root {
  /* Brand */
  --accent:           #34B9B6;
  --accent-dark:      #279896;
  --accent-light:     #5CCFCD;

  /* Neutral Light */
  --white:            #FFFFFF;
  --off-white:        #FAFAFA;
  --gray-50:          #F5F5F5;
  --gray-100:         #EBEBEB;
  --gray-200:         #D6D6D6;
  --gray-400:         #9A9A9A;
  --gray-600:         #5A5A5A;
  --gray-800:         #2A2A2A;

  /* Dark */
  --dark:             #0A0C0E;
  --dark-2:           #111418;
  --dark-3:           #181C22;
  --dark-border:      rgba(255,255,255,0.08);
  --dark-text:        rgba(255,255,255,0.85);
  --dark-text-muted:  rgba(255,255,255,0.65);

  /* Text */
  --text:             #1A1A1A;
  --text-secondary:   #475569;
  --text-muted:       #64748B;
  --border:           #E2E8F0;

  /* Typography */
  --font-head:        'Manrope', 'Inter', system-ui, sans-serif;
  --font-body:        'Inter', 'Manrope', system-ui, sans-serif;

  /* Spacing */
  --max-w:            1320px;
  --pad:              clamp(1.25rem, 4vw, 2.5rem);
  --section-y:        clamp(5rem, 9vw, 8.5rem);

  /* Radius */
  --r-sm:             4px;
  --r-md:             8px;
  --r-lg:             16px;

  /* Transitions */
  --ease:             cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast:           0.2s;
  --t-base:           0.35s;
  --t-slow:           0.55s;

  /* Header */
  --header-h:         68px;
}

/* ============================================================
   2. RESET
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  max-width: 100%;
  width: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
  max-width: 100%;
  width: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a   { text-decoration: none; color: inherit; }
ul  { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
address { font-style: normal; }
abbr    { text-decoration: none; cursor: help; border-bottom: 1px dotted var(--text-muted); }

[id] { scroll-margin-top: calc(var(--header-h) + 12px); }

/* ============================================================
   3. LAYOUT
   ============================================================ */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.section {
  padding: var(--section-y) 0;
  position: relative;
}

/* ============================================================
   4. TYPOGRAPHY TOKENS
   ============================================================ */
.label {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.label--light {
  color: var(--accent-light);
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 3.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--text);
  margin-bottom: 0;
}

.section-title--light { color: var(--white); }

.text-accent { color: var(--accent); }

/* Section index number — large decorative digit */
.section-index { display: none !important; }

.section-index--dark  { color: rgba(0,0,0,0.05); }
.section-index--light { color: rgba(255,255,255,0.05); }

/* Tech tags */
.tech-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 0.3rem 0.7rem;
  border-radius: var(--r-sm);
}

/* ============================================================
   5. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.8rem 1.75rem;
  border-radius: var(--r-sm);
  border: 1.5px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition:
    background var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease);
  position: relative;
}

.btn:hover { transform: translateY(-1px); }
.btn:active{ transform: translateY(0); }

.btn--primary {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.btn--primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  box-shadow: 0 4px 16px rgba(52,185,182,0.35);
}

.btn--ghost {
  background: transparent;
  color: rgba(255,255,255,0.85);
  border-color: rgba(255,255,255,0.3);
}
.btn--ghost:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.6);
  color: var(--white);
}

.btn--outline {
  background: transparent;
  color: var(--text);
  border-color: var(--gray-200);
}
.btn--outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--lg {
  padding: 0.95rem 2.25rem;
  font-size: 0.85rem;
}

.btn--submit {
  width: 100%;
  justify-content: center;
  padding: 0.9rem;
}

/* ============================================================
   6. HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  transition:
    background var(--t-base) var(--ease),
    box-shadow var(--t-base) var(--ease),
    border-bottom-color var(--t-base) var(--ease);
  border-bottom: 1px solid transparent;
}

/* Transparent on hero */
.header { background: rgba(10,12,14,0); }

/* Scrolled state */
.header.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
  box-shadow: 0 1px 12px rgba(0,0,0,0.06);
}

.header__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad);
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}

/* Logo */
.header__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header__logo-img {
  height: 42px;
  width: auto;
  object-fit: contain;
  background: #FFFFFF;
  padding: 4px 10px;
  border-radius: 6px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
  transition: all var(--t-fast);
}

.header.scrolled .header__logo-img {
  background: transparent;
  padding: 0;
  box-shadow: none;
}

.header__logo-text {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.logo-mark {
  width: 34px;
  height: 34px;
  background: var(--accent);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  border-radius: 6px;
  flex-shrink: 0;
}

.logo-words { display: flex; flex-direction: column; line-height: 1.1; }

.logo-name {
  font-family: var(--font-head);
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--white);
  transition: color var(--t-fast);
}

.logo-name--light { color: var(--white); }

.header.scrolled .logo-name { color: var(--text); }
.header.scrolled .logo-sub  { color: var(--text-muted); }

.logo-sub {
  font-size: 0.52rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  transition: color var(--t-fast);
}

/* Nav list */
.header__nav { flex: 1; display: flex; justify-content: center; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.nav-item {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.7);
  padding: 0.45rem 0.8rem;
  border-radius: var(--r-sm);
  position: relative;
  transition: color var(--t-fast) var(--ease);
  white-space: nowrap;
}

/* Underline animation */
.nav-item::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0.8rem;
  right: 0.8rem;
  height: 1.5px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-base) var(--ease);
}

.nav-item:hover { color: var(--white); }
.nav-item:hover::after { transform: scaleX(1); }
.nav-item.active { color: var(--accent-light); }
.nav-item.active::after { transform: scaleX(1); background: var(--accent-light); }

/* Scrolled nav */
.header.scrolled .nav-item { color: var(--text-secondary); }
.header.scrolled .nav-item:hover { color: var(--text); }
.header.scrolled .nav-item.active { color: var(--accent-dark); }
.header.scrolled .nav-item.active::after { background: var(--accent-dark); }

/* Header CTA */
.header__actions {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}


.header__cta {
  font-size: 0.78rem;
  padding: 0.55rem 1.25rem;
}

/* Header Quick Contact Phone Pill */
.header__phone-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.85rem;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #FFFFFF;
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: all var(--t-fast) var(--ease);
}

.header__phone-pill:hover {
  background: rgba(52, 185, 182, 0.15);
  border-color: var(--accent);
  color: var(--accent-light);
}

.header.scrolled .header__phone-pill {
  background: rgba(52, 185, 182, 0.08);
  border-color: rgba(52, 185, 182, 0.25);
  color: var(--accent-dark);
}

.header.scrolled .header__phone-pill:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #FFFFFF;
}

.phone-icon-pulse {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  color: #FFFFFF;
  animation: micro-pulse 2s infinite ease-in-out;
}

@keyframes micro-pulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(52, 185, 182, 0.5); }
  50% { transform: scale(1.08); box-shadow: 0 0 0 6px rgba(52, 185, 182, 0); }
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  border-radius: var(--r-sm);
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: rgba(255,255,255,0.85);
  border-radius: 2px;
  transition: all var(--t-base) var(--ease);
  transform-origin: center;
}

.header.scrolled .hamburger span { background: var(--text); }

.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile nav overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 990;
  opacity: 0;
  transition: opacity var(--t-base) var(--ease);
  backdrop-filter: blur(4px);
}
.nav-overlay.visible { display: block; opacity: 1; }

/* ============================================================
   7. HERO — ENGINEERED MACHINE SHOWCASE STAGE
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #0A0D11;
  padding-top: calc(var(--header-h) + 2.5rem);
  padding-bottom: 4rem;
}

/* Subtle Technical Blueprint Grid & Ambient Radial Lighting */
.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 1;
}

.hero__radial-glow {
  position: absolute;
  top: 25%;
  right: 12%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(52, 185, 182, 0.16) 0%, rgba(10, 13, 17, 0) 70%);
  pointer-events: none;
  z-index: 1;
  filter: blur(50px);
}

.hero__container {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad);
  width: 100%;
}

.hero__stage-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: clamp(2.5rem, 4vw, 4.5rem);
  align-items: center;
}

/* Text Column */
.hero__col-text {
  display: flex;
  flex-direction: column;
}

.hero__tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 0.85rem;
  background: rgba(52, 185, 182, 0.08);
  border: 1px solid rgba(52, 185, 182, 0.25);
  border-radius: 99px;
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent-light);
  width: fit-content;
  margin-bottom: 1.35rem;
  opacity: 0;
  transform: translateY(16px);
}

.pulse-status {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(52, 185, 182, 0.6);
  animation: micro-pulse 2s infinite ease-in-out;
  flex-shrink: 0;
}

.hero__title {
  font-family: var(--font-head);
  font-size: clamp(2.5rem, 4.8vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: #FFFFFF;
  margin-bottom: 1.35rem;
  opacity: 0;
  transform: translateY(20px);
}

.hero__title-highlight {
  color: var(--accent);
  position: relative;
  display: inline-block;
}

.hero__sub {
  font-size: clamp(0.92rem, 1.3vw, 1.05rem);
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.7;
  max-width: 530px;
  margin-bottom: 1.65rem;
  opacity: 0;
  transform: translateY(16px);
}

/* Specs Ribbon */
.hero__specs-ribbon {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(16px);
}

.hero__spec-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.35rem 0.75rem;
  border-radius: var(--r-sm);
  font-size: 0.76rem;
  color: rgba(255, 255, 255, 0.85);
  font-family: var(--font-head);
  font-weight: 500;
  transition: border-color var(--t-fast);
}

.hero__spec-pill svg {
  color: var(--accent-light);
  flex-shrink: 0;
}

.hero__spec-pill:hover {
  border-color: rgba(52, 185, 182, 0.4);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1.5rem;
  opacity: 0;
  transform: translateY(16px);
}

.btn--hero {
  padding: 0.85rem 1.75rem;
  font-size: 0.9rem;
  font-weight: 700;
}

.hero__proof-inline {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.55);
  opacity: 0;
  transform: translateY(14px);
}

.proof-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* RIGHT: Visual Machine Stage Card */
.hero__col-visual {
  position: relative;
  opacity: 0;
  transform: translateY(24px);
}

.hero-stage-card {
  position: relative;
  background: linear-gradient(160deg, rgba(22, 28, 36, 0.88) 0%, rgba(12, 16, 21, 0.96) 100%);
  border: 1px solid rgba(52, 185, 182, 0.3);
  border-radius: var(--r-lg);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  overflow: hidden;
  padding: 1.25rem;
}

.stage-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.72rem;
}

.stage-card__sys-id {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sys-led {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #34B9B6;
  box-shadow: 0 0 8px #34B9B6;
}

.sys-code {
  font-family: 'JetBrains Mono', Consolas, monospace;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.85);
}

.stage-card__spec-badge {
  background: rgba(52, 185, 182, 0.1);
  color: var(--accent-light);
  padding: 0.2rem 0.55rem;
  border-radius: var(--r-sm);
  font-weight: 600;
  font-size: 0.68rem;
  border: 1px solid rgba(52, 185, 182, 0.2);
}

/* Machine Viewport */
.stage-card__viewport {
  position: relative;
  width: 100%;
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0.5rem 0;
  background: radial-gradient(circle at 50% 55%, rgba(52, 185, 182, 0.16) 0%, rgba(0, 0, 0, 0.25) 68%);
  border-radius: var(--r-md);
  overflow: visible;
}

.stage-card__img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.7));
  transition: transform var(--t-slow) var(--ease);
}

.hero-stage-card:hover .stage-card__img {
  transform: scale(1.02);
}

/* Technical Interactive Callouts */
.tech-callout {
  position: absolute;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tech-callout__pulse {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #FFFFFF;
  box-shadow: 0 0 0 0 rgba(52, 185, 182, 0.7);
  animation: micro-pulse 2.2s infinite ease-in-out;
  flex-shrink: 0;
}

.tech-callout__box {
  background: rgba(10, 14, 18, 0.92);
  border: 1px solid rgba(52, 185, 182, 0.4);
  padding: 0.35rem 0.65rem;
  border-radius: var(--r-sm);
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
  pointer-events: none;
  white-space: nowrap;
}

.tech-callout__title {
  display: block;
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.2;
}

.tech-callout__desc {
  display: block;
  font-size: 0.62rem;
  color: var(--accent-light);
  line-height: 1.2;
}

.tech-callout--top-right {
  top: 10%;
  right: 5%;
}

.tech-callout--mid-left {
  top: 48%;
  left: 4%;
}

.tech-callout--bottom-right {
  bottom: 8%;
  right: 6%;
}

/* Stage Card Footer Metrics */
.stage-card__footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.stage-foot-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.stage-foot-label {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.45);
}

.stage-foot-val {
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  color: #FFFFFF;
}

.stage-foot-sep {
  width: 1px;
  height: 24px;
  background: rgba(255, 255, 255, 0.1);
}

/* Reveal animations for hero stage */
.hero__tag-pill.revealed,
.hero__title.revealed,
.hero__sub.revealed,
.hero__specs-ribbon.revealed,
.hero__actions.revealed,
.hero__proof-inline.revealed,
.hero__col-visual.revealed {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}

/* Scroll indicator */
.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: var(--pad);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255,255,255,0.45);
  transition: color var(--t-fast);
}

.hero__scroll:hover { color: var(--accent-light); }

.hero__scroll-line {
  display: block;
  width: 1px;
  height: 42px;
  background: currentColor;
  animation: line-breathe 2.5s ease-in-out infinite;
}

@keyframes line-breathe {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.4; transform: scaleY(0.6); }
}

.hero__scroll-label {
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
}

/* ============================================================
   8. ABOUT
   ============================================================ */
.about {
  background: var(--white);
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.about__text-col { position: relative; z-index: 1; }

.about__heading {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 1.75rem;
}

.about__body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.about__body p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 440px;
}

.about__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.25rem;
}

.about__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  border-bottom: 1.5px solid var(--text);
  padding-bottom: 2px;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.about__link svg { transition: transform var(--t-fast) var(--ease); }
.about__link:hover { color: var(--accent); border-color: var(--accent); }
.about__link:hover svg { transform: translateX(4px); }

/* Image column */
.about__image-frame {
  position: relative;
  border-radius: var(--r-md);
  overflow: hidden;
  aspect-ratio: 4/5;
  background: var(--white);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.about__img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--t-slow) var(--ease);
}

.about__image-frame:hover .about__img { transform: scale(1.03); }

.about__img-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem 1.25rem;
  background: linear-gradient(to top, rgba(0,0,0,0.55), transparent);
  font-size: 0.72rem;
  color: rgba(255,255,255,0.8);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ============================================================
   9. PRODUCTS
   ============================================================ */
.products {
  background: var(--gray-50);
}

.products__header {
  margin-bottom: 3rem;
}

/* Featured product */
.featured-product {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 0;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--gray-100);
  background: var(--white);
  margin-bottom: 3rem;
}

.featured-product__media {
  position: relative;
  overflow: hidden;
}

.featured-product__img-wrap {
  width: 100%;
  height: 100%;
  min-height: 480px;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.featured-product__img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--t-slow) var(--ease);
}

.featured-product:hover .featured-product__img { transform: scale(1.03); }

.featured-product__info {
  padding: clamp(2rem, 4vw, 3.5rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.25rem;
}

.featured-product__badge {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(52,185,182,0.08);
  border: 1px solid rgba(52,185,182,0.2);
  padding: 0.28rem 0.65rem;
  border-radius: var(--r-sm);
  width: fit-content;
}

.featured-product__name {
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--text);
}

.featured-product__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.featured-product__specs {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

.featured-product__specs li {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.spec-dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.featured-product__note {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.76rem;
  color: var(--accent-dark);
  background: rgba(52,185,182,0.06);
  border: 1px solid rgba(52,185,182,0.15);
  border-radius: var(--r-sm);
  padding: 0.65rem 0.8rem;
  line-height: 1.5;
}

.featured-product__note svg { flex-shrink: 0; margin-top: 1px; }

/* Solution types list */
.solution-types__header { margin-bottom: 1.5rem; }

.solution-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--gray-100);
}

.solution-item {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 1.5rem;
  align-items: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--gray-100);
  transition: background var(--t-fast) var(--ease);
  cursor: default;
}

.solution-item:hover { background: rgba(52,185,182,0.02); }

.solution-item__num {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gray-200);
  letter-spacing: -0.03em;
  transition: color var(--t-fast);
}

.solution-item:hover .solution-item__num { color: var(--accent); }

.solution-item__title {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.3rem;
}

.solution-item__desc {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.solution-item__link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  border: 1px solid var(--border);
  border-radius: 50%;
  flex-shrink: 0;
  transition: all var(--t-fast) var(--ease);
}

.solution-item:hover .solution-item__link {
  color: var(--white);
  background: var(--accent);
  border-color: var(--accent);
  transform: translateX(4px);
}

/* ============================================================
   10. TECHNICAL CONFIG
   ============================================================ */
.technical {
  background: var(--white);
}

.technical__header {
  max-width: 680px;
  margin-bottom: 3.5rem;
}

.technical__note {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 1rem;
  max-width: 560px;
}

/* Tech grid — engineering blueprint aesthetic */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
}

.tech-item {
  padding: 1.5rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background var(--t-fast) var(--ease);
  position: relative;
}

.tech-item:nth-child(4n) { border-right: none; }
.tech-item:nth-child(5),
.tech-item:nth-child(6),
.tech-item:nth-child(7),
.tech-item:nth-child(8) { border-bottom: none; }

.tech-item:hover { background: var(--off-white); }

.tech-item--basic { background: rgba(52,185,182,0.03); }
.tech-item--optional { opacity: 0.85; }
.tech-item--optional::before {
  content: 'OPT';
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 0.1rem 0.35rem;
  border-radius: 2px;
}

.tech-item__group {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.tech-item__name {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.tech-item:hover .tech-item__name { color: var(--accent); }

.tech-item__label {
  font-size: 0.76rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.technical__footer { margin-top: 2.5rem; }

.technical__cta-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.75rem 2rem;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--off-white);
}

.technical__cta-line p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  max-width: 480px;
}

/* ============================================================
   11. APPLICATIONS
   ============================================================ */
.applications {
  background: var(--dark-2);
  padding-bottom: 0;
}

.applications__header {
  padding: 0 var(--pad);
  max-width: var(--max-w);
  margin: 0 auto calc(var(--section-y) * 0.6);
}

/* Editorial grid */
.app-editorial {
  display: grid;
  grid-template-columns: 1fr 0.5fr;
  grid-template-rows: auto auto;
  gap: 3px;
  grid-template-areas:
    "main side"
    "bottom bottom";
}

.app-editorial__main   { grid-area: main; }
.app-editorial__side   { grid-area: side; display: flex; flex-direction: column; gap: 3px; }
.app-editorial__bottom { grid-area: bottom; display: grid; grid-template-columns: repeat(4, 1fr); gap: 3px; }

.app-img-block {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: var(--dark-3);
}

.app-img-block--large { aspect-ratio: 4/3; }
.app-editorial__side .app-img-block { flex: 1; min-height: 0; aspect-ratio: unset; }
.app-editorial__side { min-height: 420px; }
.app-editorial__bottom .app-img-block { aspect-ratio: 1/1; }

.app-img-block img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--t-slow) var(--ease), filter var(--t-slow) var(--ease);
}

.app-img-block:hover img {
  transform: scale(1.04);
  filter: brightness(0.85);
}

.img-placeholder-inner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.06);
  background: var(--dark-3);
}

.app-img-block__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,12,14,0.8) 0%, transparent 50%);
  display: flex;
  align-items: flex-end;
  padding: 1.25rem;
  gap: 0.75rem;
  opacity: 0;
  transition: opacity var(--t-base) var(--ease);
}

.app-img-block:hover .app-img-block__overlay { opacity: 1; }

.app-img-block__cat {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent-light);
}

.app-img-block__name {
  font-family: var(--font-head);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--white);
}

/* Always show cat number on bottom row (small blocks) */
.app-editorial__bottom .app-img-block__overlay { opacity: 1; }
.app-editorial__bottom .app-img-block:hover .app-img-block__overlay {
  background: linear-gradient(to top, rgba(10,12,14,0.9) 0%, rgba(10,12,14,0.3) 100%);
}

/* ============================================================
   12. WHY ULTRASONIC
   ============================================================ */
.why { background: var(--white); }

.why__header {
  margin-bottom: 4rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: end;
  gap: 2rem;
}

.why__title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--text);
}

.why__list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--border);
}

.why-point {
  padding: 2rem 2rem 2rem 0;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background var(--t-fast);
  cursor: default;
}

.why-point:nth-child(3n) { border-right: none; padding-right: 0; }
.why-point:nth-child(4),
.why-point:nth-child(5),
.why-point:nth-child(6) { border-bottom: none; }

.why-point:hover { background: rgba(52,185,182,0.03); }

.why-point__num {
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  transition: color var(--t-fast);
}

.why-point:hover .why-point__num { color: var(--accent); }

.why-point__title {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.6rem;
  transition: color var(--t-fast);
}

.why-point:hover .why-point__title { color: var(--accent-dark); }

.why-point__desc {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================================================
   13. WORKFLOW
   ============================================================ */
.workflow { background: var(--gray-50); }

.workflow__header { margin-bottom: 4rem; }

.workflow__steps {
  display: flex;
  position: relative;
}

/* Connecting line — runs across all steps */
.workflow__steps::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border);
  z-index: 0;
}

.workflow-step {
  flex: 1;
  position: relative;
  padding-top: 3rem;
  padding-right: 1.5rem;
}

.workflow-step--last { padding-right: 0; }

.workflow-step__num {
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: var(--white);
  border: 1.5px solid var(--accent);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  transition: background var(--t-fast), color var(--t-fast);
}

.workflow-step:hover .workflow-step__num {
  background: var(--accent);
  color: var(--white);
}

.workflow-step__title {
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.workflow-step__desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ============================================================
   14. GALLERY
   ============================================================ */
.gallery { background: var(--white); }

.gallery__header {
  margin-bottom: 2.5rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.gallery__hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* Asymmetric grid */
.gallery-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: 260px 320px;
  gap: 6px;
}

/* Row 1 */
.g-item--r1c1 { grid-column: 1; grid-row: 1; }
.g-item--r1c2 { grid-column: 2; grid-row: 1; }
.g-item--r1c3 { grid-column: 3; grid-row: 1; }
/* Row 2 */
.g-item--r2c1 { grid-column: 1; grid-row: 2; }
.g-item--r2c2 { grid-column: 2; grid-row: 2; }
.g-item--r2c3 { grid-column: 3; grid-row: 2; }
.g-item--r2c4 { display: none; } /* 7th item hidden on desktop; visible mobile */

.g-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: var(--gray-100);
  border-radius: 2px;
}

.g-item:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.g-item__inner {
  width: 100%;
  height: 100%;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
}

.g-item__inner img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.75rem;
  transition: transform 0.5s var(--ease), filter 0.5s var(--ease);
}

.g-item:hover .g-item__inner img {
  transform: scale(1.05);
  filter: brightness(0.88);
}

.g-item__overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,12,14,0.45);
  display: flex;
  align-items: flex-end;
  padding: 1rem;
  opacity: 0;
  transition: opacity var(--t-base) var(--ease);
}

.g-item__overlay span {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(10,12,14,0.5);
  padding: 0.25rem 0.6rem;
  border-radius: 2px;
}

.g-item:hover .g-item__overlay { opacity: 1; }

/* Placeholder when image absent */
.g-item__inner.img-placeholder,
.about__image-frame.img-placeholder,
.featured-product__img-wrap.img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  border: 2px dashed var(--gray-200);
  background: var(--gray-50);
}

/* ============================================================
   15. LIGHTBOX
   ============================================================ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(5,6,8,0.95);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.lightbox__content {
  position: relative;
  z-index: 1;
  max-width: 88vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.lightbox__img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--r-sm);
}

.lightbox__caption {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.06em;
}

.lightbox__close,
.lightbox__prev,
.lightbox__next {
  position: absolute;
  z-index: 2;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  transition: all var(--t-fast) var(--ease);
}

.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover {
  background: rgba(255,255,255,0.15);
  color: var(--white);
}

.lightbox__close { top: 1.25rem; right: 1.25rem; }
.lightbox__prev  { top: 50%; left: 1.25rem; transform: translateY(-50%); }
.lightbox__next  { top: 50%; right: 1.25rem; transform: translateY(-50%); }

/* ============================================================
   16. CTA
   ============================================================ */
.cta {
  background: var(--dark);
  padding: clamp(5rem, 10vw, 8rem) 0;
}

.cta__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.cta__title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4.5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--white);
}

.cta__desc {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.cta__actions { display: flex; flex-wrap: wrap; gap: 1rem; }

/* ============================================================
   17. CONTACT
   ============================================================ */
.contact { background: var(--white); }

.contact__header { margin-bottom: 3.5rem; }

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 5rem;
  align-items: start;
}

.contact__brand { margin-bottom: 2rem; }

.contact__logo {
  height: 44px;
  width: auto;
  object-fit: contain;
  margin-bottom: 1rem;
}

.contact__logo-text .logo-name {
  font-size: 1.3rem;
  color: var(--text);
  display: block;
  margin-bottom: 1rem;
}

.contact__company-name {
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  line-height: 1.4;
}

.contact__address {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.contact-row {
  display: flex;
  gap: 1rem;
  align-items: baseline;
}

.contact-row__label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  min-width: 80px;
  flex-shrink: 0;
}

.contact-row__value {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.contact-row__link {
  transition: color var(--t-fast);
}
.contact-row__link:hover { color: var(--accent); }

.contact-row--accent .contact-row__value {
  color: var(--accent-dark);
  font-weight: 600;
  font-size: 1rem;
}

/* Form */
.contact__form-wrap {
  background: var(--off-white);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: clamp(1.75rem, 3vw, 2.75rem);
}

.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-field { display: flex; flex-direction: column; gap: 0.4rem; }

.form-label {
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray-600);
}

.form-label abbr { color: var(--accent); border: none; }

.form-input {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--r-sm);
  padding: 0.7rem 0.9rem;
  width: 100%;
  outline: none;
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
  appearance: none;
}

.form-input::placeholder { color: var(--gray-400); }

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(52,185,182,0.1);
}

.form-input.error { border-color: #c0392b; }

.form-select { cursor: pointer; }

.form-textarea {
  resize: vertical;
  min-height: 100px;
  line-height: 1.6;
}

.form-error {
  font-size: 0.72rem;
  color: #c0392b;
  font-weight: 500;
  min-height: 1em;
}

.form-success {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: rgba(52,185,182,0.06);
  border: 1px solid rgba(52,185,182,0.25);
  border-radius: var(--r-sm);
  padding: 1rem 1.15rem;
  color: var(--accent-dark);
  font-size: 0.88rem;
  line-height: 1.6;
}

.form-success svg { flex-shrink: 0; margin-top: 2px; }

.form-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.form-note a { color: var(--accent-dark); font-weight: 600; }
.form-note a:hover { text-decoration: underline; }

/* ============================================================
   18. FOOTER
   ============================================================ */
.footer { background: var(--dark); }

.footer__top { padding: 4.5rem 0; border-bottom: 1px solid var(--dark-border); }

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
}

.footer__logo {
  height: 38px;
  width: auto;
  object-fit: contain;
  margin-bottom: 1rem;
}

.footer__brand-name {
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.8);
  margin-bottom: 0.4rem;
  line-height: 1.5;
}

.footer__tagline {
  font-size: 0.78rem;
  color: var(--accent-light);
  margin-bottom: 1.25rem;
}

.footer__phone {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  transition: color var(--t-fast);
}
.footer__phone:hover { color: var(--accent-light); }

.footer__col-title {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 1.25rem;
}

.footer__links { display: flex; flex-direction: column; gap: 0.6rem; }

.footer__link {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  transition: color var(--t-fast);
}
.footer__link:hover { color: rgba(255,255,255,0.9); }
.footer__link--accent { color: var(--accent); }

.footer__address {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.6;
}

.footer__bottom {
  padding: 1.25rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer__bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.footer__copy, .footer__domain {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
}

.footer__domain:hover { color: rgba(255,255,255,0.6); }


/* ============================================================
   20. SCROLL REVEAL ANIMATIONS (SAFETY-FIRST)
   ============================================================ */
/* Default: ALWAYS VISIBLE so content is never hidden if JS is delayed */
[data-reveal] {
  opacity: 1;
  transform: none;
}

/* Enable smooth reveal only when page script is running */
.js-loaded [data-reveal]:not(.revealed):not(.visible) {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--t-slow) var(--ease),
    transform var(--t-slow) var(--ease);
}

.js-loaded [data-reveal].visible,
.js-loaded [data-reveal].revealed {
  opacity: 1 !important;
  transform: none !important;
}

/* Hero section is ALWAYS 100% visible immediately, never blank */
#hero [data-reveal] {
  opacity: 1 !important;
  transform: none !important;
}

[data-reveal-delay="1"] { transition-delay: 0.1s; }
[data-reveal-delay="2"] { transition-delay: 0.2s; }
[data-reveal-delay="3"] { transition-delay: 0.3s; }
[data-reveal-delay="4"] { transition-delay: 0.4s; }

[data-reveal].visible {
  opacity: 1;
  transform: none;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ============================================================
   21. RESPONSIVE — Tablet ≤ 1024px
   ============================================================ */
@media (max-width: 1024px) {
  :root {
    --section-y: clamp(4rem, 8vw, 6rem);
  }

  /* Header: hide desktop nav, show hamburger */
  .header__inner {
    justify-content: space-between;
    gap: 0.75rem;
    width: 100%;
  }

  .header__nav {
    display: contents; /* Prevents empty flex item taking up space */
  }

  .nav-list {
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    width: min(300px, 85vw);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 2rem 1.5rem;
    background: rgba(15,18,22,0.99);
    border-left: 1px solid var(--dark-border);
    z-index: 999;
    gap: 0.1rem;
    transform: translateX(100%);
    visibility: hidden;
    pointer-events: none;
    transition: transform var(--t-base) var(--ease), visibility var(--t-base) var(--ease);
    overflow-y: auto;
  }

  .nav-list.open {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
  }

  .nav-item {
    width: 100%;
    font-size: 1rem;
    padding: 0.75rem 0.75rem;
    color: rgba(255,255,255,0.7);
    border-radius: var(--r-sm);
  }

  .nav-item::after { display: none; }
  .nav-item:hover { background: rgba(255,255,255,0.05); color: var(--white); }

  .hamburger { display: flex; }
  .header__cta { display: none; }

  /* About */
  .about__grid { grid-template-columns: 1fr; gap: 3rem; }
  .about__image-col { order: -1; }
  .about__image-frame { aspect-ratio: 16/9; }

  /* Products */
  .featured-product { grid-template-columns: 1fr; }
  .featured-product__img-wrap { min-height: 320px; }

  /* Tech */
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-item:nth-child(2n) { border-right: none; }
  .tech-item:nth-child(4) { border-bottom: 1px solid var(--border); }
  .tech-item:nth-child(5) { border-bottom: 1px solid var(--border); }
  .tech-item:nth-child(6) { border-bottom: 1px solid var(--border); }
  .tech-item:nth-child(7),
  .tech-item:nth-child(8) { border-bottom: none; }
  .technical__cta-line { flex-direction: column; align-items: flex-start; gap: 1rem; }

  /* Applications */
  .app-editorial { grid-template-columns: 1fr 1fr; grid-template-areas: "main main" "side side" "bottom bottom"; }
  .app-editorial__side { flex-direction: row; min-height: 220px; }

  /* Why */
  .why__header { grid-template-columns: 1fr; }
  .why__list { grid-template-columns: repeat(2, 1fr); }
  .why-point:nth-child(2n)  { border-right: none; }
  .why-point:nth-child(3)   { border-right: 1px solid var(--border); }
  .why-point:nth-child(5)   { border-bottom: none; }
  .why-point:nth-child(6)   { border-bottom: none; }
  .why-point:nth-child(2n+1) { padding-right: 0; }

  /* Workflow */
  .workflow__steps { flex-direction: column; gap: 2.5rem; }
  .workflow__steps::before { display: none; }
  .workflow-step { padding-top: 0; padding-left: 3.5rem; padding-right: 0; }
  .workflow-step__num { top: 50%; transform: translateY(-50%); left: 0; }

  /* Gallery */
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: repeat(4, 220px);
  }
  .g-item--r1c1 { grid-column: 1 / 3; grid-row: 1; }
  .g-item--r1c2 { grid-column: 1; grid-row: 2; }
  .g-item--r1c3 { grid-column: 2; grid-row: 2; }
  .g-item--r2c1 { grid-column: 1 / 3; grid-row: 3; }
  .g-item--r2c2 { grid-column: 1; grid-row: 4; }
  .g-item--r2c3 { grid-column: 2; grid-row: 4; }
  .g-item--r2c4 { display: none; }

  /* CTA */
  .cta__inner { grid-template-columns: 1fr; gap: 2.5rem; }

  /* Contact */
  .contact__grid { grid-template-columns: 1fr; gap: 3rem; }

  /* Footer */
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer__bottom .container { flex-direction: column; text-align: center; gap: 0.4rem; }
}

/* ============================================================
   22. RESPONSIVE — Mobile ≤ 768px
   ============================================================ */
@media (max-width: 768px) {
  :root { --section-y: clamp(3.5rem, 8vw, 5rem); }

  /* Hero */
  .hero__content { padding-top: calc(var(--header-h) + 3.5rem); padding-bottom: 8rem; }
  .hero__title { font-size: clamp(2.6rem, 10vw, 3.5rem); }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { justify-content: center; }
  .hero__scroll { display: none; }

  /* Solution items */
  .solution-item { grid-template-columns: 52px 1fr auto; gap: 1rem; padding: 1.25rem 0; }
  .solution-item__num { font-size: 1.1rem; }

  /* Tech */
  .tech-grid { grid-template-columns: 1fr 1fr; }

  /* Applications */
  .app-editorial {
    grid-template-columns: 1fr;
    grid-template-areas: "main" "side" "bottom";
  }
  .app-editorial__side { flex-direction: row; min-height: 220px; }
  .app-editorial__bottom { grid-template-columns: repeat(2, 1fr); }

  /* Why */
  .why__list { grid-template-columns: 1fr; }
  .why-point { border-right: none !important; padding-right: 0 !important; border-bottom: 1px solid var(--border) !important; }
  .why-point:last-child { border-bottom: none !important; }
  .why-point { padding: 1.5rem 0; }

  /* Workflow */
  .workflow-step { padding-left: 3rem; }
  .workflow-step__num { width: 34px; height: 34px; font-size: 0.62rem; }

  /* Gallery */
  .gallery-grid {
    grid-template-columns: 1fr;
    grid-template-rows: repeat(6, 200px);
  }
  .g-item--r1c1 { grid-column: 1; grid-row: 1; }
  .g-item--r1c2 { grid-column: 1; grid-row: 2; }
  .g-item--r1c3 { grid-column: 1; grid-row: 3; }
  .g-item--r2c1 { grid-column: 1; grid-row: 4; }
  .g-item--r2c2 { grid-column: 1; grid-row: 5; }
  .g-item--r2c3 { grid-column: 1; grid-row: 6; }

  /* Gallery header */
  .gallery__header { flex-direction: column; align-items: flex-start; gap: 0.5rem; }

  /* CTA */
  .cta__title { font-size: clamp(1.75rem, 7vw, 2.4rem); }
  .cta__actions { flex-direction: column; }
  .cta__actions .btn { justify-content: center; }

  /* Form */
  .form-row { grid-template-columns: 1fr; }

  /* Footer */
  .footer__grid { grid-template-columns: 1fr; gap: 2rem; }

  /* Mobile bar visible */
  
  
  

  /* Section index smaller */
  .section-index { font-size: clamp(4rem, 15vw, 6rem); }
}

/* ============================================================
   23. RESPONSIVE — Small Mobile ≤ 480px
   ============================================================ */
@media (max-width: 480px) {
  :root { --section-y: 3rem; --pad: 1rem; }

  .hero__title { font-size: clamp(2.2rem, 10vw, 3rem); }
  .about__heading { font-size: clamp(1.75rem, 7vw, 2.4rem); }
  .featured-product__img-wrap { min-height: 240px; }

  .app-editorial__bottom { grid-template-columns: 1fr 1fr; }

  .tech-grid { grid-template-columns: 1fr; }
  .tech-item { border-right: none !important; }

  .gallery-grid { grid-template-rows: repeat(6, 180px); }

  .cta__title { font-size: clamp(1.6rem, 7vw, 2rem); }
  .contact__form-wrap { padding: 1.5rem; }
}

/* ============================================================
   24. FOCUS / ACCESSIBILITY
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ============================================================
   25. PRINT
   ============================================================ */
@media print {
  .header, .speed-dial, .hero__scroll, .lightbox { display: none !important; }
  .hero { min-height: auto; padding: 2rem 0; }
}

/* ============================================================
   26. SUB-PAGE STYLES
   ============================================================ */

/* Skip to main content (accessibility) */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--accent);
  color: var(--white);
  padding: 0.5rem 1rem;
  border-radius: var(--r-sm);
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 9999;
  transition: top var(--t-fast);
}
.skip-link:focus { top: 1rem; }

/* ── PAGE HERO (sub-pages, ~45vh) ── */
.page-hero {
  position: relative;
  min-height: clamp(320px, 45vh, 560px);
  display: flex;
  align-items: flex-end;
  background: var(--dark);
  overflow: hidden;
  padding-top: var(--header-h);
}

.page-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.3;
}

.page-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right,
    rgba(10,12,14,0.92) 0%,
    rgba(10,12,14,0.7) 60%,
    rgba(10,12,14,0.4) 100%
  );
}

.page-hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem var(--pad) 3.5rem;
}

.page-hero__title {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  max-width: 700px;
}

.page-hero__subtitle {
  font-size: clamp(0.9rem, 1.5vw, 1rem);
  color: rgba(255,255,255,0.65);
  max-width: 540px;
  line-height: 1.65;
}

/* ── BREADCRUMB ── */
.breadcrumb {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  background: var(--white);
}

.breadcrumb__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.breadcrumb__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.breadcrumb__item a {
  color: var(--text-muted);
  transition: color var(--t-fast);
}
.breadcrumb__item a:hover { color: var(--accent); }

.breadcrumb__item--current {
  color: var(--text-secondary);
  font-weight: 500;
}

.breadcrumb__sep {
  color: var(--gray-200);
  font-size: 0.7rem;
}

/* ── PROSE / EDITORIAL CONTENT ── */
.prose {
  max-width: 760px;
}

.prose h2 {
  font-family: var(--font-head);
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 2.5rem 0 1rem;
}

.prose h2:first-child { margin-top: 0; }

.prose h3 {
  font-family: var(--font-head);
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
  margin: 1.75rem 0 0.75rem;
}

.prose p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.prose ul, .prose ol {
  padding-left: 1.25rem;
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }

.prose li {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-left: 0.25rem;
}

.prose a {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.prose a:hover { color: var(--accent); }

.prose strong { font-weight: 600; color: var(--text); }

.prose blockquote {
  border-left: 3px solid var(--accent);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background: rgba(52,185,182,0.04);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

.prose blockquote p {
  font-size: 1rem;
  font-style: italic;
  color: var(--text-secondary);
  margin: 0;
}

/* ── PAGE CONTENT LAYOUT ── */
.page-content {
  padding: var(--section-y) 0;
  background: var(--white);
}

.page-content--alt { background: var(--gray-50); }
.page-content--dark { background: var(--dark); }

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.content-grid--wide {
  grid-template-columns: 1.5fr 1fr;
}

/* ── FAQ SECTION ── */
.faq { background: var(--white); }

.faq__header { margin-bottom: 3rem; }

.faq__list {
  max-width: 840px;
  border-top: 1px solid var(--border);
}

.faq-item {
  border-bottom: 1px solid var(--border);
  transition: background var(--t-fast);
}

.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.4rem 0;
  text-align: left;
  cursor: pointer;
  background: none;
  border: none;
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  transition: color var(--t-fast);
}

.faq-item__question:hover { color: var(--accent-dark); }

.faq-item__icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border: 1.5px solid var(--gray-300);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  transition: all var(--t-fast) var(--ease);
  position: relative;
}

.faq-item__icon::before,
.faq-item__icon::after {
  content: '';
  position: absolute;
  background: currentColor;
  border-radius: 2px;
}
.faq-item__icon::before { width: 10px; height: 1.5px; }
.faq-item__icon::after  { width: 1.5px; height: 10px; transition: transform var(--t-fast) var(--ease); }

.faq-item.open .faq-item__icon {
  border-color: var(--accent);
  color: var(--accent);
}
.faq-item.open .faq-item__icon::after { transform: rotate(90deg); }

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--t-slow) var(--ease);
}

.faq-item.open .faq-item__answer { max-height: 400px; }

.faq-item__answer-inner {
  padding-bottom: 1.4rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ── PRODUCT DETAIL PAGE ── */
.product-hero-section {
  background: var(--gray-50);
  padding: var(--section-y) 0;
}

.product-intro {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 5rem;
  align-items: start;
}

.product-intro__media {
  position: relative;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--border);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.product-intro__img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.product-intro__content { padding-top: 0.5rem; }

.product-intro__badge {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(52,185,182,0.08);
  border: 1px solid rgba(52,185,182,0.2);
  padding: 0.28rem 0.65rem;
  border-radius: var(--r-sm);
  margin-bottom: 1.25rem;
}

.product-intro__title {
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.product-intro__desc {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.product-features-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

.product-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.87rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.product-feature-item .spec-dot { margin-top: 0.4rem; }

.config-note {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--accent-dark);
  background: rgba(52,185,182,0.06);
  border: 1px solid rgba(52,185,182,0.18);
  border-radius: var(--r-sm);
  padding: 0.75rem 0.9rem;
  line-height: 1.5;
  margin-bottom: 1.75rem;
}

.config-note svg { flex-shrink: 0; margin-top: 1px; }

/* Config options table */
.config-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin: 1.5rem 0;
}

.config-table th {
  text-align: left;
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.75rem 1rem;
  background: var(--gray-50);
  border: 1px solid var(--border);
}

.config-table td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: top;
  line-height: 1.5;
}

.config-table tr:hover td { background: rgba(52,185,182,0.02); }

.config-table td:first-child { font-weight: 600; color: var(--text); }

/* ── NEWS / BLOG LISTING ── */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.news-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: all var(--t-base) var(--ease);
}

.news-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
  border-color: rgba(52,185,182,0.3);
}

.news-card__img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--gray-100);
}

.news-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow) var(--ease);
}

.news-card:hover .news-card__img img { transform: scale(1.04); }

.news-card__body { padding: 1.5rem; }

.news-card__cat {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.news-card__title {
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
  margin-bottom: 0.6rem;
  transition: color var(--t-fast);
}
.news-card:hover .news-card__title { color: var(--accent-dark); }

.news-card__excerpt {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.1rem;
}

.news-card__link {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-dark);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: gap var(--t-fast);
}
.news-card__link:hover { gap: 0.65rem; color: var(--accent); }

/* ── APPLICATION DETAIL PAGE ── */
.app-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.app-detail-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: all var(--t-base) var(--ease);
}

.app-detail-card:hover {
  box-shadow: 0 6px 24px rgba(0,0,0,0.08);
  border-color: rgba(52,185,182,0.3);
}

.app-detail-card__img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--gray-100);
}

.app-detail-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow) var(--ease);
}

.app-detail-card:hover .app-detail-card__img img { transform: scale(1.04); }

.app-detail-card__body { padding: 1.5rem; }

.app-detail-card__num {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.app-detail-card__title {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.app-detail-card__desc {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── CONTACT PAGE ── */
.contact-page {
  background: var(--white);
}

.contact-page__grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 5rem;
  align-items: start;
}

/* ── RELATED LINKS (cross-linking) ── */
.related-links {
  background: var(--gray-50);
  padding: 3.5rem 0;
  border-top: 1px solid var(--border);
}

.related-links__title {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.related-links__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.related-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  border-radius: var(--r-sm);
  transition: all var(--t-fast) var(--ease);
}

.related-link:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
  background: rgba(52,185,182,0.04);
}

/* ── CTA STRIP (compact, for sub-pages) ── */
.cta-strip {
  background: var(--dark);
  padding: clamp(3.5rem, 6vw, 5rem) 0;
}

.cta-strip__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.cta-strip__text { color: var(--white); }

.cta-strip__title {
  font-family: var(--font-head);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.4rem;
}

.cta-strip__sub {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
}

.cta-strip__actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* ── RESPONSIVE SUB-PAGES ── */
@media (max-width: 1024px) {
  .content-grid,
  .content-grid--wide { grid-template-columns: 1fr; gap: 3rem; }

  .product-intro { grid-template-columns: 1fr; gap: 2.5rem; }

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

  .contact-page__grid { grid-template-columns: 1fr; gap: 3rem; }
}

@media (max-width: 768px) {
  .page-hero { min-height: 300px; }
  .page-hero__title { font-size: clamp(1.5rem, 6vw, 2rem); }

  .app-list { grid-template-columns: 1fr; }

  .news-grid { grid-template-columns: 1fr; }

  .cta-strip__inner { flex-direction: column; align-items: flex-start; }

  .config-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }

  .faq-item__question { font-size: 0.88rem; }
}

@media (max-width: 480px) {
  .related-links__list { flex-direction: column; }
  .cta-strip__actions { flex-direction: column; width: 100%; }
  .cta-strip__actions .btn { justify-content: center; }
}




/* ============================================================
   TRUST METRICS STRIP — BẢO CHỨNG NĂNG LỰC KỸ THUẬT
   ============================================================ */
.trust-strip {
  background: #0E1217;
  border-top: 1px solid rgba(52, 185, 182, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 3.5rem 0;
  position: relative;
  z-index: 3;
}

.trust-strip__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
}

@media (max-width: 1024px) {
  .trust-strip__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }
}

@media (max-width: 768px) {
  .trust-strip__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.85rem;
  }
}

@media (max-width: 480px) {
  .trust-strip__grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

.trust-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--r-md);
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  transition: all var(--t-fast) var(--ease);
}

.trust-card:hover {
  background: rgba(52, 185, 182, 0.04);
  border-color: rgba(52, 185, 182, 0.35);
  transform: translateY(-3px);
}

.trust-card__icon {
  width: 38px;
  height: 38px;
  border-radius: var(--r-sm);
  background: rgba(52, 185, 182, 0.1);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.trust-card__num {
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 2.2vw, 1.85rem);
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.1;
  margin-bottom: 0.35rem;
  letter-spacing: -0.02em;
}

.trust-card__label {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-light);
  margin-bottom: 0.5rem;
}

.trust-card__desc {
  font-size: 0.76rem;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.55;
}

/* ============================================================
   SOLUTION MATRIX GRID (SECTION 03 REDESIGN)
   ============================================================ */
.solution-types {
  margin-top: 3.5rem;
}

.solution-types__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 2.25rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.solution-types__title {
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 2.5vw, 1.85rem);
  font-weight: 700;
  color: var(--text);
  margin-top: 0.25rem;
}

.solution-types__subtitle {
  font-size: 0.88rem;
  color: var(--text-secondary);
  max-width: 440px;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.sol-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--t-fast) var(--ease);
  position: relative;
}

.sol-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.08);
}

.sol-card__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  font-family: var(--font-head);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.6rem;
  border-radius: var(--r-sm);
  background: rgba(10, 14, 18, 0.85);
  color: #FFFFFF;
  backdrop-filter: blur(4px);
}

.sol-card__badge--accent {
  background: var(--accent-dark);
  color: #FFFFFF;
}

.sol-card__thumb {
  width: 100%;
  height: 220px;
  background: #FFFFFF;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  overflow: hidden;
}

.sol-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--t-slow) var(--ease);
}

.sol-card:hover .sol-card__thumb img {
  transform: scale(1.05);
}

.sol-card__content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.sol-card__name {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 0.65rem;
}

.sol-card__desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.sol-card__specs {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  border-top: 1px dashed var(--border);
  padding-top: 0.85rem;
  margin-bottom: 1.25rem;
  margin-top: auto;
}

.sol-card__specs li {
  font-size: 0.76rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.sol-card__specs strong {
  color: var(--text);
}

.sol-card__action {
  margin-top: auto;
}

.btn--outline-dark {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.55rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text);
  background: var(--gray-50);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  transition: all var(--t-fast) var(--ease);
}

.btn--outline-dark:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #FFFFFF;
}




/* ============================================================
   19. UNIFIED SPEED-DIAL FLOATING HUB
   ============================================================ */
.speed-dial {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
  pointer-events: none;
}

.speed-dial__item {
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-family: var(--font-head);
  font-weight: 700;
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), background var(--t-fast);
  cursor: pointer;
}

/* 1. Scroll to top button */
.speed-dial__item--top {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #181C22;
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease, background 0.2s;
}

.speed-dial__item--top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.speed-dial__item--top:hover {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(52, 185, 182, 0.45);
}

/* 2. Zalo button */
.speed-dial__item--zalo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #0068FF;
  color: #FFFFFF;
  border: none;
  box-shadow: 0 4px 16px rgba(0, 104, 255, 0.35);
}

.speed-dial__zalo-text {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  font-weight: 800;
}

.speed-dial__item--zalo:hover {
  background: #0056D6;
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 6px 22px rgba(0, 104, 255, 0.5);
}

/* 3. Phone Hotline button */
.speed-dial__item--phone {
  height: 48px;
  padding: 0 1.25rem 0 0.85rem;
  border-radius: 99px;
  background: #E53935;
  color: #FFFFFF;
  box-shadow: 0 4px 20px rgba(229, 57, 53, 0.4);
  gap: 0.65rem;
  white-space: nowrap;
}

.speed-dial__phone-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  animation: phone-ring 2.2s infinite ease-in-out;
}

@keyframes phone-ring {
  0%, 100% { transform: scale(1); }
  15% { transform: rotate(15deg) scale(1.1); }
  30% { transform: rotate(-15deg) scale(1.1); }
  45% { transform: rotate(10deg) scale(1.05); }
  60% { transform: rotate(0) scale(1); }
}

.speed-dial__phone-num {
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

.speed-dial__item--phone:hover {
  background: #D32F2F;
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 26px rgba(229, 57, 53, 0.55);
}

/* Mobile responsive */
@media (max-width: 768px) {
  .speed-dial {
    bottom: 18px;
    right: 18px;
    gap: 10px;
  }
  .speed-dial__phone-num {
    display: none;
  }
  .speed-dial__item--phone {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: 50%;
    justify-content: center;
  }
  .speed-dial__phone-icon {
    width: 100%;
    height: 100%;
    background: transparent;
  }
  .speed-dial__item--top {
    width: 40px;
    height: 40px;
  }
}



/* ============================================================
   CLEAN APPLICATION GRID (SECTION 05)
   ============================================================ */
.app-clean-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.app-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), border-color var(--t-fast);
}

.app-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
}

.app-card__thumb {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: #111418;
}

.app-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow) var(--ease);
}

.app-card:hover .app-card__thumb img {
  transform: scale(1.06);
}

.app-card__body {
  padding: 1.25rem 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.app-card__num {
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 0.35rem;
}

.app-card__title {
  font-family: var(--font-head);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.app-card__desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 992px) {
  .app-clean-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 540px) {
  .app-clean-grid {
    grid-template-columns: 1fr;
  }
}

/* Contrast and readability safety: Ensure titles on light background are always dark and readable */
.workflow .section-title,
.products .section-title {
  color: var(--text) !important;
}
.workflow .label,
.products .label {
  color: var(--accent) !important;
}


/* ============================================================
   QUICK MACHINE CONFIGURATOR (MODULE 1)
   ============================================================ */
.configurator {
  background: var(--gray-50);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.configurator__header {
  margin-bottom: 2.5rem;
}

.configurator__grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.config-wizard {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.config-step {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.35rem 1.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

.config-step__head {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  margin-bottom: 1.15rem;
}

.config-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: 50%;
  flex-shrink: 0;
}

.config-step__title {
  font-family: var(--font-head);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.2rem;
}

.config-step__desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.config-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.config-opt {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: #fdfdfd;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-body);
  width: 100%;
}

.config-opt * {
  pointer-events: none;
}

.config-opt:hover {
  border-color: var(--accent);
  background: #f8fdfd;
}

.config-opt.active {
  border-color: var(--accent);
  background: #f0faf9;
  box-shadow: 0 0 0 1px var(--accent);
}

.config-opt__indicator {
  width: 16px;
  height: 16px;
  border: 2px solid #cbd5e1;
  border-radius: 50%;
  margin-top: 3px;
  flex-shrink: 0;
  position: relative;
  transition: all 0.2s ease;
}

.config-opt.active .config-opt__indicator {
  border-color: var(--accent);
  background: var(--accent);
}

.config-opt.active .config-opt__indicator::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 6px;
  height: 6px;
  background: #fff;
  border-radius: 50%;
}

.config-opt__content {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.config-opt__title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.config-opt.active .config-opt__title {
  color: var(--accent-dark);
}

.config-opt__desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Result Card */
.config-result-wrap {
  position: sticky;
  top: 90px;
}

.config-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-top: 4px solid var(--accent);
  border-radius: 12px;
  padding: 1.75rem;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.07);
}

.config-card__badge {
  display: inline-block;
  background: #e6f7f6;
  color: var(--accent-dark);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

.config-card__title {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.35;
  margin-bottom: 0.35rem;
}

.config-card__subtitle {
  font-size: 0.84rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.config-spec-grid {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1rem;
  background: var(--gray-50);
  border-radius: 8px;
  margin-bottom: 1.25rem;
}

.config-spec {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  gap: 0.5rem;
}

.config-spec__label {
  color: var(--text-secondary);
}

.config-spec__val {
  color: var(--text);
  font-weight: 600;
  text-align: right;
}

.config-features {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.config-feature-item {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.config-card__footer {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.config-zalo-btn {
  background: #0068ff !important;
  border-color: #0068ff !important;
  color: #fff !important;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.config-zalo-btn:hover {
  background: #0052cc !important;
  border-color: #0052cc !important;
}

.config-card__hotline {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 0.25rem;
}

.config-card__hotline a {
  color: var(--text);
}

/* ============================================================
   ARTICLE QUICK MODAL / DRAWER (MODULE 4)
   ============================================================ */
.article-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.article-modal.active {
  display: flex;
}

.article-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 12, 14, 0.75);
  backdrop-filter: blur(4px);
}

.article-modal__card {
  position: relative;
  background: var(--white);
  border-radius: 16px;
  max-width: 800px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  z-index: 1;
}

.article-modal__close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--gray-50);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 1.2rem;
  transition: all 0.2s ease;
}

.article-modal__close:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.article-modal__cat {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-dark);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.article-modal__title {
  font-family: var(--font-head);
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.35;
  margin-bottom: 1.25rem;
}

.article-modal__content {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.article-modal__content p {
  margin-bottom: 1rem;
}

.article-modal__content h4 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

.article-modal__content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.84rem;
}

.article-modal__content th,
.article-modal__content td {
  border: 1px solid var(--border);
  padding: 0.65rem 0.85rem;
  text-align: left;
}

.article-modal__content th {
  background: var(--gray-50);
  font-weight: 700;
  color: var(--text);
}

.article-modal__footer {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Responsive for Configurator & Trial */
@media (max-width: 992px) {
  .configurator__grid {
    grid-template-columns: 1fr;
  }
  .config-result-wrap {
    position: static;
  }
  .trial-card__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .trial-steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 540px) {
  .config-options {
    grid-template-columns: 1fr;
  }
}

/* Solution grid responsive behavior */
@media (max-width: 1024px) {
  .solution-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
}

@media (max-width: 640px) {
  .solution-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
}

/* Header phone pill on compact mobile */
@media (max-width: 540px) {
  .header__inner {
    gap: 0.5rem;
  }
  .header__phone-pill span:not(.phone-icon-pulse) {
    display: none;
  }
  .header__phone-pill {
    padding: 0.4rem;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    justify-content: center;
  }
  .header__logo-img {
    height: 34px;
    padding: 2px 6px;
  }
}

/* iOS Safari auto-zoom prevention: Input font-size >= 16px */
@media (max-width: 768px) {
  .form-input,
  .form-select,
  .form-textarea {
    font-size: 16px !important;
  }
}

/* Touch target enhancement for WCAG */
.news-card__link {
  min-height: 44px;
  padding: 0.5rem 0;
}

.btn--outline-dark {
  min-height: 44px;
}

/* ═══════════════════════════════════════════════════════════
   HERO STAGE MULTI-DEVICE RESPONSIVE OPTIMIZATIONS
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero {
    padding-top: calc(var(--header-h) + 1.75rem);
    padding-bottom: 3.5rem;
    min-height: auto;
  }
  .hero__stage-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .hero__col-text {
    max-width: 680px;
    margin: 0 auto;
    text-align: left;
  }
  .hero-stage-card {
    max-width: 640px;
    margin: 0 auto;
    width: 100%;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: calc(var(--header-h) + 1rem);
    padding-bottom: 2.5rem;
  }
  .hero__title {
    font-size: clamp(1.85rem, 8vw, 2.75rem);
    line-height: 1.1;
  }
  .hero__sub {
    font-size: 0.88rem;
    line-height: 1.6;
    margin-bottom: 1.25rem;
  }
  .hero__specs-ribbon {
    gap: 0.45rem;
    margin-bottom: 1.5rem;
  }
  .hero__spec-pill {
    font-size: 0.74rem;
    padding: 0.35rem 0.65rem;
    width: 100%;
  }
  .hero__actions {
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
  }
  .hero__actions .btn {
    width: 100%;
    justify-content: center;
  }
  .stage-card__viewport {
    height: clamp(220px, 55vw, 300px);
  }
  .stage-card__img {
    max-width: 95%;
    max-height: 95%;
  }
  .tech-callout {
    display: none !important; /* Hide tiny callout hotspots on compact screens */
  }
  .stage-card__footer {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }
  .stage-foot-sep {
    display: none;
  }
  .stage-foot-item:nth-child(5) {
    grid-column: 1 / -1;
  }
}