/* ============================================================
   JSN GROUP — STYLESHEET
   Place this file at:  css/style.css
   ============================================================ */

/* ── RESET & BASE ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', 'Roboto', sans-serif;
  background: #1a1a1a;
  color: #ffffff;
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
svg { display: block; flex-shrink: 0; }
a   { text-decoration: none; color: inherit; }
ul  { list-style: none; }

/* ── CSS VARIABLES ────────────────────────────────────────── */
:root {
  --bg-dark:      #1a1a1a;
  --bg-card:      #2a2a2a;
  --bg-light:     #f4f4f4;
  --bg-white:     #ffffff;
  --accent-red:   #cc2936;
  --accent-hover: #a01020;
  --accent-orange:#f4a261;
  --text-white:   #ffffff;
  --text-light:   #cccccc;
  --text-dark:    #333333;
  --text-mid:     #666666;
  --border-dark:  rgba(255,255,255,0.06);
  --border-light: rgba(0,0,0,0.08);
  --shadow:       0 10px 40px rgba(0,0,0,0.2);
  --shadow-card:  0 4px 24px rgba(0,0,0,0.10);
  --radius-card:  12px;
  --radius-btn:   50px;
  --tr:           0.3s ease;
}

/* ── UTILITY ──────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-red);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 600px;
}

/* ── BUTTONS ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--tr), color var(--tr),
              border-color var(--tr), transform var(--tr);
  white-space: nowrap;
}
.btn-red {
  background: var(--accent-red);
  color: #fff;
  border-color: var(--accent-red);
}
.btn-red:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-2px);
}
.btn-outline-white {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
  transform: translateY(-2px);
}

/* ── SCROLL REVEAL ────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible   { 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; }
.reveal-delay-4   { transition-delay: 0.4s; }
.reveal-delay-5   { transition-delay: 0.5s; }
.reveal-delay-6   { transition-delay: 0.6s; }

/* ══════════════════════════════════════════════════════════
   NAVBAR
   ══════════════════════════════════════════════════════════ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--bg-dark);
  border-bottom: 1px solid var(--border-dark);
  transition: background var(--tr), box-shadow var(--tr);
}
#navbar.scrolled {
  background: rgba(26,26,26,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav-logo {
  font-size: 1.45rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  color: #fff;
}
.nav-logo span { color: var(--accent-red); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  position: relative;
  transition: color var(--tr);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--accent-red);
  transition: width var(--tr);
}
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav-pdf-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: var(--radius-btn);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  border: 1.5px solid rgba(255,255,255,0.2);
  color: var(--text-light);
  background: transparent;
  cursor: pointer;
  transition: all var(--tr);
}
.nav-pdf-btn:hover { border-color: var(--accent-red); color: var(--accent-red); }
.nav-pdf-btn svg { width: 13px; height: 13px; flex-shrink: 0; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--tr);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  flex-direction: column;
  background: #1a1a1a;
  border-top: 1px solid var(--border-dark);
  padding: 8px 0 16px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-light);
  transition: color var(--tr), background var(--tr);
}
.mobile-menu a:hover { color: #fff; background: rgba(255,255,255,0.04); }
.mobile-menu-actions {
  display: flex;
  gap: 10px;
  padding: 12px 24px 4px;
}

/* ══════════════════════════════════════════════════════════
   HERO
   ══════════════════════════════════════════════════════════ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
  padding-top: 72px;
}
.hero-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 900px; height: 700px;
  background: radial-gradient(ellipse at center, rgba(204,41,54,0.13) 0%, transparent 65%);
  pointer-events: none;
}
.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
  padding: 80px 0;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(204,41,54,0.12);
  border: 1px solid rgba(204,41,54,0.3);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-red);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.hero-badge::before { content: '●'; font-size: 0.5rem; }
.hero-headline {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}
.hero-headline .accent { color: var(--accent-red); }
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 520px;
}
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 56px; }
.hero-buttons svg { width: 16px; height: 16px; }

.hero-stats { display: flex; gap: 32px; flex-wrap: wrap; }
.hero-stat  { display: flex; flex-direction: column; gap: 2px; }
.hero-stat-num { font-size: 1.6rem; font-weight: 800; color: #fff; }
.hero-stat-num span { color: var(--accent-red); }
.hero-stat-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-light);
  letter-spacing: 0.5px;
}
.hero-stat-divider { width: 1px; background: var(--border-dark); align-self: stretch; }

/* Hero visual */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.hero-ring {
  width: 420px; height: 420px;
  border-radius: 50%;
  background: rgba(204,41,54,0.06);
  border: 1px solid rgba(204,41,54,0.15);
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.hero-ring-inner {
  width: 300px; height: 300px;
  border-radius: 50%;
  background: rgba(204,41,54,0.1);
  border: 1px solid rgba(204,41,54,0.25);
  display: flex; align-items: center; justify-content: center;
}
.hero-ring-core {
  width: 180px; height: 180px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-red) 0%, #a01020 100%);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 60px rgba(204,41,54,0.5);
}
.hero-ring-core svg { width: 72px !important; height: 72px !important; }
.hero-orbit-dot {
  position: absolute;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--accent-red);
  box-shadow: 0 0 12px rgba(204,41,54,0.8);
}
.hero-orbit-dot:nth-child(2) { top: 10%; left: 50%; transform: translateX(-50%); }
.hero-orbit-dot:nth-child(3) { bottom: 10%; left: 50%; transform: translateX(-50%); background: var(--accent-orange); }
.hero-orbit-dot:nth-child(4) { left: 10%; top: 50%; transform: translateY(-50%); background: #fff; opacity: 0.6; }
.hero-orbit-dot:nth-child(5) { right: 10%; top: 50%; transform: translateY(-50%); }
.hero-product-tags {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 8px;
  right: -20px;
  top: 50%; transform: translateY(-50%);
}
.hero-tag {
  background: #2a2a2a;
  border: 1px solid var(--border-dark);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-tag-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-red); flex-shrink: 0; }

/* ══════════════════════════════════════════════════════════
   ABOUT
   ══════════════════════════════════════════════════════════ */
#about { background: var(--bg-white); padding: 100px 0; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-text .section-title { color: var(--text-dark); }
.about-text .section-label { color: var(--accent-red); }
.about-text .section-desc  { color: var(--text-mid); }
.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 32px;
}
.about-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: 10px;
  background: var(--bg-light);
  border: 1px solid var(--border-light);
}
.about-feature-icon {
  width: 28px;  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  background: rgba(204,41,54,0.1);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}
.about-feature-icon svg {
  width: 14px !important;
  height: 14px !important;
  color: var(--accent-red);
}
.about-feature-text { font-size: 0.88rem; font-weight: 600; color: var(--text-dark); }

/* About card */
.about-visual { display: flex; align-items: center; justify-content: center; }
.about-card-main {
  background: var(--bg-dark);
  border-radius: 16px;
  padding: 36px;
  width: 100%;
  box-shadow: var(--shadow);
}
.about-card-logo { font-size: 2rem; font-weight: 900; color: #fff; margin-bottom: 6px; }
.about-card-logo span { color: var(--accent-red); }
.about-card-tagline { font-size: 0.8rem; color: var(--text-light); margin-bottom: 28px; letter-spacing: 0.5px; }
.about-stat-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.about-mini-stat {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-dark);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
}
.about-mini-stat-num   { font-size: 1.6rem; font-weight: 800; color: var(--accent-red); }
.about-mini-stat-label { font-size: 0.75rem; color: var(--text-light); margin-top: 2px; }
.about-certbadge {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(204,41,54,0.1);
  border: 1px solid rgba(204,41,54,0.25);
  border-radius: 10px;
  padding: 14px 16px;
}
.about-certbadge-icon { font-size: 1.5rem; }
.about-certbadge-text { font-size: 0.8rem; font-weight: 600; color: #fff; line-height: 1.4; }
.about-certbadge-text span { color: var(--text-light); font-weight: 400; }

/* ══════════════════════════════════════════════════════════
   PRODUCTS
   ══════════════════════════════════════════════════════════ */
#products { background: var(--bg-dark); padding: 100px 0; }
#products .section-title { color: var(--text-white); }
.products-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 56px;
  gap: 24px;
  flex-wrap: wrap;
}
.products-header .section-desc { color: var(--text-light); }
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  transition: transform var(--tr), box-shadow var(--tr);
}
.product-card:hover { transform: translateY(-6px); box-shadow: 0 20px 50px rgba(0,0,0,0.25); }
.product-card-header {
  padding: 28px 24px 20px;
  background: linear-gradient(135deg, #f8f8f8 0%, #efefef 100%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.product-icon-wrap {
  width: 60px; height: 60px;
  min-width: 60px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.product-icon-wrap svg { width: 32px !important; height: 32px !important; }
.product-qr {
  width: 58px; height: 58px;
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  padding: 3px;
}
.product-qr canvas,
.product-qr img { width: 100% !important; height: 100% !important; }
.product-card-body {
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-name  { font-size: 1.05rem; font-weight: 800; color: var(--text-dark); margin-bottom: 8px; }
.product-desc  { font-size: 0.85rem; color: var(--text-mid); line-height: 1.6; margin-bottom: 16px; flex: 1; }
.product-tags  { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.product-tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 50px;
  background: rgba(204,41,54,0.08);
  color: var(--accent-red);
  border: 1px solid rgba(204,41,54,0.2);
}
.product-link {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-red);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--tr);
  cursor: pointer;
}
.product-link:hover { gap: 10px; }
.product-link svg { width: 14px !important; height: 14px !important; }

/* ══════════════════════════════════════════════════════════
   VALUES
   ══════════════════════════════════════════════════════════ */
#values { background: var(--bg-light); padding: 100px 0; }
#values .section-title { color: var(--text-dark); }
.values-header { text-align: center; margin-bottom: 56px; }
.values-header .section-desc { color: var(--text-mid); margin: 0 auto; }
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.value-card {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  transition: transform var(--tr), box-shadow var(--tr), border-color var(--tr);
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
  border-color: rgba(204,41,54,0.25);
}
.value-icon {
  width: 52px; height: 52px;
  min-width: 52px;
  border-radius: 14px;
  background: rgba(204,41,54,0.1);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  overflow: hidden;
}
.value-icon svg { width: 26px !important; height: 26px !important; color: var(--accent-red); }
.value-name { font-size: 1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.value-desc { font-size: 0.88rem; color: var(--text-mid); line-height: 1.65; }

/* ══════════════════════════════════════════════════════════
   CONTACT
   ══════════════════════════════════════════════════════════ */
#contact { background: var(--bg-dark); padding: 100px 0; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.contact-left .section-title { color: var(--text-white); }
.contact-left .section-desc  { color: var(--text-light); margin-bottom: 40px; }
.contact-info-list { display: flex; flex-direction: column; gap: 20px; margin-top: 36px; }
.contact-info-item { display: flex; align-items: flex-start; gap: 16px; }
.contact-info-icon {
  width: 44px; height: 44px;
  min-width: 44px;
  border-radius: 12px;
  background: rgba(204,41,54,0.12);
  border: 1px solid rgba(204,41,54,0.25);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}
.contact-info-icon svg { width: 20px !important; height: 20px !important; color: var(--accent-red); }
.contact-info-label {
  font-size: 0.75rem; font-weight: 600;
  color: var(--accent-red);
  letter-spacing: 1px; text-transform: uppercase;
  margin-bottom: 4px;
}
.contact-info-value { font-size: 0.95rem; color: var(--text-light); line-height: 1.5; }
.contact-form-wrap {
  background: #222;
  border-radius: 16px;
  padding: 40px;
  border: 1px solid var(--border-dark);
}
.contact-form-title { font-size: 1.3rem; font-weight: 700; color: #fff; margin-bottom: 28px; }
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 0.82rem; font-weight: 600;
  color: var(--text-light);
  margin-bottom: 8px; letter-spacing: 0.3px;
}
.form-input,
.form-textarea {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1.5px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  padding: 13px 16px;
  font-family: inherit;
  font-size: 0.95rem;
  color: #fff;
  transition: border-color var(--tr), background var(--tr);
  outline: none;
}
.form-input::placeholder,
.form-textarea::placeholder { color: rgba(255,255,255,0.25); }
.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent-red);
  background: rgba(255,255,255,0.08);
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-submit   { width: 100%; padding: 15px; font-size: 1rem; border: none; }
.form-note     { font-size: 0.78rem; color: var(--text-light); text-align: center; margin-top: 12px; opacity: 0.7; }

/* ══════════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════════ */
#footer {
  background: #111;
  border-top: 1px solid var(--border-dark);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border-dark);
}
.footer-brand-logo      { font-size: 1.4rem; font-weight: 900; color: #fff; margin-bottom: 12px; }
.footer-brand-logo span { color: var(--accent-red); }
.footer-brand-desc      { font-size: 0.88rem; color: var(--text-light); line-height: 1.65; margin-bottom: 24px; }
.footer-social { display: flex; gap: 10px; }
.footer-social-link {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.07);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-dark);
  transition: background var(--tr), transform var(--tr);
  overflow: hidden;
}
.footer-social-link:hover { background: var(--accent-red); transform: translateY(-2px); }
.footer-social-link svg { width: 16px !important; height: 16px !important; }
.footer-col-title {
  font-size: 0.85rem; font-weight: 700; color: #fff;
  letter-spacing: 0.5px; text-transform: uppercase;
  margin-bottom: 20px;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 0.88rem; color: var(--text-light);
  transition: color var(--tr), padding-left var(--tr);
}
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  font-size: 0.82rem;
  color: var(--text-light);
  opacity: 0.7;
  gap: 16px;
  flex-wrap: wrap;
}

/* ══════════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid   { grid-template-columns: repeat(2, 1fr); }
  .footer-grid   { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .nav-links, .nav-actions { display: none; }
  .hamburger { display: flex; }
  .hero-inner  { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .hero-stats  { gap: 20px; }
  .hero-stat-divider { display: none; }
  .about-grid    { grid-template-columns: 1fr; gap: 40px; }
  .about-visual  { display: none; }
  .products-grid { grid-template-columns: 1fr 1fr; }
  .values-grid   { grid-template-columns: 1fr; }
  .contact-grid  { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid   { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .products-grid     { grid-template-columns: 1fr; }
  .about-features    { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 24px; }
  .hero-buttons      { flex-direction: column; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
}