/* Vigor Labs Pro design system */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap");

:root {
  --navy-900: #050b1b;
  --navy-800: #0b1428;
  --navy-700: #121e36;
  --navy-600: #1c2b45;
  --navy-500: #243652;
  --mist-50: #f8fafc;
  --mist-100: #eef2f7;
  --mist-200: #d6deea;
  --mist-300: #c2cddd;
  --cyan-400: #4be0ff;
  --cyan-500: #1dd2ff;
  --cyan-600: #00b8e6;
  --text-primary: #0c1b33;
  --text-secondary: #51607a;
  --text-muted: #7c8ba6;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 12px;
  --shadow-soft: 0 18px 45px rgba(5, 11, 27, 0.12);
  --shadow-strong: 0 24px 50px rgba(5, 11, 27, 0.18);
  --max-width: 1180px;
  --font-heading: "Space Grotesk", "Inter", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--mist-50);
  color: var(--text-primary);
  line-height: 1.7;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.015em;
}

h1 { line-height: 1.1; }
h2, h3, h4 { line-height: 1.2; }

ul, ol { margin: 0; padding-left: 1.2rem; }

button {
  font-family: var(--font-body);
  background: none;
  border: none;
  cursor: pointer;
}

.container { width: min(var(--max-width), 92%); margin: 0 auto; }
section { padding: 3.5rem 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(75, 224, 255, 0.1);
  color: var(--cyan-500);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.65rem;
  border: 1px solid rgba(75, 224, 255, 0.35);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-sm);
  background: var(--mist-100);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.85rem;
  border: 1px solid var(--mist-200);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.78rem 1.35rem;
  border-radius: var(--radius-sm);
  background: var(--cyan-500);
  color: #031023;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid rgba(4, 16, 35, 0.1);
  box-shadow: 0 10px 25px rgba(29, 210, 255, 0.28);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn:hover, .btn:focus-visible {
  transform: translateY(-2px);
  background: var(--cyan-600);
  box-shadow: 0 14px 32px rgba(0, 184, 230, 0.32);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.15rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--mist-300);
  color: var(--text-primary);
  background: transparent;
  font-weight: 700;
  font-size: 0.95rem;
  transition: border-color 0.18s ease, transform 0.18s ease, background 0.18s ease;
}

.btn-ghost:hover, .btn-ghost:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(75, 224, 255, 0.4);
  background: rgba(75, 224, 255, 0.08);
}

.btn-ghost.inverse {
  color: #e5edf7;
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.05);
}

.btn-ghost.inverse:hover, .btn-ghost.inverse:focus-visible {
  border-color: rgba(75, 224, 255, 0.6);
  background: rgba(75, 224, 255, 0.12);
}

.meta { color: var(--text-muted); font-size: 0.86rem; letter-spacing: 0.01em; }

.site-header {
  background: var(--navy-900);
  color: #e6edf7;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 14px 35px rgba(5, 11, 27, 0.24);
}

.header-top {
  background: linear-gradient(90deg, rgba(75, 224, 255, 0.18), rgba(5, 11, 27, 0.9));
  color: #d9e7ff;
  font-size: 0.92rem;
  text-align: center;
  padding: 0.55rem 1rem;
  letter-spacing: 0.01em;
}

.header-main { padding: 1rem 0; }
.header-main .container { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  color: #e6edf7;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.brand img { max-width: 58px; height: auto; }

.brand-wordmark { display: flex; flex-direction: column; gap: 0.1rem; }
.brand-title { font-family: var(--font-heading); text-transform: uppercase; font-size: 1.05rem; letter-spacing: 0.12em; color: #f1f6ff; }
.brand-sub { color: var(--cyan-500); font-size: 0.82rem; font-weight: 700; letter-spacing: 0.08em; }

.primary-nav { display: flex; gap: 0.4rem; align-items: center; }
.nav-link {
  position: relative;
  color: #c6d4eb;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  border: 1px solid transparent;
  letter-spacing: 0.02em;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.nav-link:hover, .nav-link:focus-visible {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(75, 224, 255, 0.35);
}

.nav-link.is-active {
  color: #ffffff;
  border-color: rgba(75, 224, 255, 0.6);
  background: rgba(75, 224, 255, 0.08);
}

.hero {
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 65%);
  color: #e9f3ff;
  padding: 4.25rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(1200px circle at 15% 20%, rgba(75, 224, 255, 0.08), transparent 45%),
    radial-gradient(900px circle at 80% 20%, rgba(75, 224, 255, 0.08), transparent 40%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
  align-items: center;
}

.hero-copy { display: grid; gap: 1.1rem; max-width: 700px; }
.hero-copy h1 { color: #ffffff; font-size: clamp(2.3rem, 4vw, 3.5rem); line-height: 1.1; }
.hero-copy p { color: rgba(233, 243, 255, 0.9); font-size: 1.08rem; max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.hero-meta .chip { background: rgba(255, 255, 255, 0.04); color: #d7e6ff; border-color: rgba(255, 255, 255, 0.14); }

.hero-panel {
  position: relative;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(75, 224, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: 0 18px 35px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(2px);
  overflow: hidden;
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(140deg, rgba(75, 224, 255, 0.08), transparent 55%);
}

.hero-panel h3 { color: #ffffff; font-size: 1.15rem; margin-bottom: 0.35rem; }
.hero-panel p { color: rgba(233, 243, 255, 0.78); font-size: 0.95rem; }

.panel-list { list-style: none; padding: 0; margin: 1rem 0 1.25rem; display: grid; gap: 0.65rem; }
.panel-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  color: #d7e6ff;
  font-weight: 600;
  font-size: 0.96rem;
}

.panel-list li::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-top: 0.35rem;
  background: linear-gradient(135deg, var(--cyan-500), #7cf0ff);
  box-shadow: 0 0 0 6px rgba(75, 224, 255, 0.12);
  flex-shrink: 0;
}

.panel-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1rem;
}

.meta-note { color: rgba(233, 243, 255, 0.85); font-size: 0.9rem; }
.panel-footer .chip { background: rgba(75, 224, 255, 0.08); border-color: rgba(75, 224, 255, 0.35); color: #b8f3ff; }

.article-list { background: var(--mist-50); padding: 3.5rem 0 4rem; }

.section-header { display: grid; gap: 0.65rem; text-align: left; max-width: 820px; margin: 0 auto 2rem; }
.section-header h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); line-height: 1.2; }
.section-header p { color: var(--text-secondary); font-size: 1rem; }
.section-actions { display: flex; justify-content: center; gap: 0.75rem; margin-top: 0.5rem; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.75rem; }

.card {
  background: #ffffff;
  border: 1px solid var(--mist-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  min-height: 100%;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card-link { display: flex; flex-direction: column; height: 100%; color: inherit; }
.card:hover, .card:focus-within { transform: translateY(-6px); box-shadow: var(--shadow-strong); border-color: rgba(75, 224, 255, 0.45); }

.card-media { position: relative; aspect-ratio: 16 / 9; background-color: var(--mist-100); overflow: hidden; }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.card:hover .card-media img { transform: scale(1.04); }

.card-body { padding: 1.35rem 1.35rem 1.4rem; display: grid; gap: 0.65rem; flex: 1; }
.card-body h3 { font-size: 1.15rem; line-height: 1.35; }
.card-body p { color: var(--text-secondary); font-size: 0.98rem; }

.badge {
  position: absolute;
  left: 1rem;
  top: 1rem;
  background: rgba(5, 11, 27, 0.86);
  border: 1px solid rgba(75, 224, 255, 0.7);
  color: #e9f3ff;
  font-weight: 700;
  font-size: 0.78rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 10px 26px rgba(5, 11, 27, 0.32);
}

.hidden-article { display: none; }

.load-more { text-align: center; margin-top: 2.5rem; }
#article-count { color: var(--text-secondary); font-weight: 600; margin-left: 0.35rem; }

.site-footer {
  background: var(--navy-900);
  color: #dbe7fb;
  padding: 2.75rem 0;
}

.site-footer .container { display: flex; flex-direction: column; gap: 1rem; text-align: center; }
.footer-content { display: flex; flex-direction: column; gap: 1.5rem; }
.footer-info { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-info p { margin: 0; }
.footer-info .copyright { font-size: 0.85rem; line-height: 1.5; color: rgba(219, 231, 251, 0.8); }
.footer-address, .footer-contact { color: rgba(219, 231, 251, 0.85); font-size: 0.9rem; }
.footer-contact a { color: var(--cyan-400); font-weight: 700; transition: color 0.18s ease; }
.footer-contact a:hover, .footer-contact a:focus-visible { color: #8df0ff; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 1.25rem; justify-content: center; }
.footer-nav a { color: rgba(219, 231, 251, 0.9); font-weight: 600; font-size: 0.92rem; transition: color 0.18s ease; }
.footer-nav a:hover, .footer-nav a:focus-visible { color: var(--cyan-400); }

.products-hero { background: linear-gradient(135deg, var(--navy-900), var(--navy-700)); padding: 2.5rem 0; color: #e9f3ff; }
.products-hero .products-hero-content { text-align: center; max-width: 720px; margin: 0 auto; display: grid; gap: 1rem; }
.products-hero .products-hero-content h1 { font-size: clamp(2rem, 3vw, 2.6rem); color: #ffffff; }
.products-hero .products-hero-content p { color: rgba(233, 243, 255, 0.86); font-size: 1.05rem; }

.features-bar { background-color: var(--navy-800); padding: 1.25rem 0; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; align-items: center; }
.features-bar .feature-item { display: flex; align-items: center; gap: 0.75rem; color: #e6edf7; font-size: 0.92rem; font-weight: 600; }
.features-bar .feature-icon { width: 36px; height: 36px; border-radius: var(--radius-md); background: rgba(75, 224, 255, 0.14); display: flex; align-items: center; justify-content: center; color: var(--cyan-500); font-size: 1rem; flex-shrink: 0; border: 1px solid rgba(75, 224, 255, 0.28); }

.products-list { padding: 3rem 0 4rem; background-color: #ffffff; }
.products-list .section-header { text-align: center; margin-bottom: 2.5rem; }
.products-list .section-header h2 { font-size: 2rem; color: var(--text-primary); }
.products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 2rem; }

.product-card { position: relative; background: #ffffff; border-radius: var(--radius-md); border: 1px solid var(--mist-200); overflow: hidden; box-shadow: var(--shadow-soft); display: flex; flex-direction: column; transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease; }
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-strong); border-color: rgba(75, 224, 255, 0.4); }
.product-media { aspect-ratio: 1 / 1; background: var(--mist-100); overflow: hidden; }
.product-card .product-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.25s ease; }
.product-card:hover .product-media img { transform: scale(1.05); }
.product-body { padding: 1.5rem; display: grid; gap: 0.75rem; flex: 1; }
.product-body h3 { font-size: 1.05rem; color: var(--text-primary); line-height: 1.4; min-height: 2.8rem; }
.product-rating { display: flex; align-items: center; gap: 0.5rem; }
.product-rating .stars { color: var(--cyan-500); font-size: 0.9rem; }
.product-rating .rating-value { color: var(--text-muted); font-size: 0.9rem; font-weight: 700; }
.product-btn { background: var(--navy-700); color: #ffffff; padding: 0.65rem 1.5rem; border-radius: var(--radius-sm); font-weight: 700; font-size: 0.9rem; text-align: center; transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease; width: 100%; display: inline-block; border: 1px solid var(--navy-600); }
.product-btn:hover, .product-btn:focus-visible { background: var(--navy-600); transform: translateY(-1px); box-shadow: 0 12px 24px rgba(18, 30, 54, 0.18); }

.guarantee-section { background-color: #ffffff; padding: 3rem 0; }
.guarantee-box { background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 100%); border-radius: var(--radius-lg); padding: 2.5rem; display: grid; grid-template-columns: auto 1fr; gap: 2rem; align-items: center; box-shadow: var(--shadow-strong); color: #e9f3ff; }
.guarantee-icon .guarantee-seal { width: 100px; height: 100px; background-color: #ffffff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 2.6rem; color: var(--cyan-500); font-weight: 700; box-shadow: 0 12px 26px rgba(4, 16, 35, 0.25); }
.guarantee-content h2 { font-size: 1.75rem; margin-bottom: 1rem; letter-spacing: 0.03em; color: #ffffff; }
.guarantee-content p { font-size: 1.05rem; line-height: 1.6; margin-bottom: 1.25rem; color: rgba(233, 243, 255, 0.9); }
.guarantee-btn { background: var(--cyan-500); color: #041023; padding: 0.75rem 2rem; border-radius: var(--radius-sm); font-weight: 700; font-size: 1rem; display: inline-block; border: 1px solid rgba(4, 16, 35, 0.15); transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease; }
.guarantee-btn:hover, .guarantee-btn:focus-visible { transform: translateY(-2px); background: var(--cyan-600); box-shadow: 0 14px 28px rgba(0, 184, 230, 0.3); }

.testimonials-section { background: var(--mist-50); padding: 3rem 0 4rem; }
.testimonials-section .section-header { text-align: center; margin-bottom: 2.5rem; }
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.testimonial-card { background: #ffffff; border-radius: var(--radius-md); padding: 2rem; box-shadow: var(--shadow-soft); display: grid; gap: 1rem; border: 1px solid var(--mist-200); }
.testimonial-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem; }
.testimonial-header strong { color: var(--text-primary); font-size: 0.95rem; }
.testimonial-header .stars { color: var(--cyan-500); font-size: 0.9rem; }
.testimonial-card p { color: var(--text-secondary); font-size: 0.98rem; line-height: 1.6; }

.article-main { background-color: #ffffff; padding: 3.5rem 0 4.5rem; }
.article-main li { list-style: circle; }
.article-page { display: grid; gap: 2.5rem; }
.article-lede { display: grid; gap: 1rem; }
.article-tag { background: rgba(75, 224, 255, 0.12); color: #043049; font-weight: 700; font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; width: fit-content; padding: 0.45rem 0.8rem; border-radius: var(--radius-sm); border: 1px solid rgba(75, 224, 255, 0.35); }
.article-lede h1 { font-size: clamp(2.1rem, 3vw, 2.8rem); color: var(--text-primary); line-height: 1.15; }
.article-meta { display: flex; flex-wrap: wrap; gap: 0.65rem 1.25rem; color: var(--text-muted); font-size: 0.95rem; font-weight: 700; }
.article-intro { font-size: 1.08rem; color: var(--text-secondary); }

.article-hero { border-radius: var(--radius-lg); overflow: hidden; max-width: 500px; margin: 0 auto; box-shadow: var(--shadow-soft); border: 1px solid var(--mist-200); }
.article-hero figcaption { background: var(--mist-100); color: var(--text-muted); font-size: 0.9rem; padding: 0.9rem 1.25rem; }

.article-content { display: grid; gap: 1.35rem; color: var(--text-primary); font-size: 1.03rem; line-height: 1.8; }
.article-content h2 { font-size: 1.6rem; color: var(--text-primary); }
.article-content h3 { font-size: 1.25rem; color: var(--text-primary); }
.article-content ul, .article-content ol { padding-left: 1.2rem; display: grid; gap: 0.5rem; }
.article-content li { position: relative; color: var(--text-secondary); }
.article-content blockquote { border-left: 4px solid var(--cyan-500); padding: 1rem 1.25rem; background-color: rgba(75, 224, 255, 0.08); color: var(--text-primary); font-weight: 600; }
.article-content a { color: var(--navy-700); font-weight: 700; text-decoration: none; border-bottom: 1px solid rgba(36, 54, 82, 0.28); }
.article-content a:hover, .article-content a:focus-visible { color: var(--cyan-600); border-bottom-color: rgba(29, 210, 255, 0.5); }

.article-highlight { background: #ffffff; border: 1px solid rgba(75, 224, 255, 0.35); border-radius: var(--radius-md); padding: 1.35rem; display: grid; gap: 0.75rem; box-shadow: var(--shadow-soft); }
.article-highlight h3 { margin: 0; font-size: 1.2rem; color: var(--text-primary); }

.article-cta { background: linear-gradient(135deg, rgba(4, 16, 35, 0.97), rgba(8, 22, 46, 0.93)); border-radius: var(--radius-lg); padding: 1.85rem; display: grid; gap: 1rem; color: #e9f3ff; border: 1px solid rgba(75, 224, 255, 0.3); box-shadow: var(--shadow-strong); }
.article-cta h2 { color: #ffffff; font-size: 1.5rem; }
.article-cta p { color: rgba(233, 243, 255, 0.9); }
.article-cta .cta-button { background-color: var(--cyan-500); color: #031023; font-weight: 700; width: fit-content; padding: 0.75rem 1.5rem; border-radius: var(--radius-sm); text-decoration: none; transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease; border: 1px solid rgba(4, 16, 35, 0.12); }
.article-cta .cta-button:hover, .article-cta .cta-button:focus-visible { transform: translateY(-1px); background: var(--cyan-600); box-shadow: 0 12px 24px rgba(0, 184, 230, 0.3); }

.article-related { border-top: 1px solid var(--mist-200); padding-top: 2rem; display: grid; gap: 1.5rem; }
.article-related h2 { font-size: 1.4rem; color: var(--text-primary); }
.article-related-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.article-related-link { background-color: var(--mist-100); border-radius: var(--radius-md); padding: 1rem 1.25rem; color: var(--text-primary); font-weight: 700; display: block; text-decoration: none; transition: background 0.18s ease, transform 0.18s ease, border-color 0.18s ease; border: 1px solid var(--mist-200); }
.article-related-link span { display: block; font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.25rem; }
.article-related-link:hover, .article-related-link:focus-visible { background-color: rgba(75, 224, 255, 0.08); border-color: rgba(75, 224, 255, 0.35); transform: translateY(-2px); }

.page-content { padding: 3.5rem 0 4rem; background-color: #ffffff; }
.page-header { text-align: center; margin-bottom: 2.5rem; padding-bottom: 1.5rem; border-bottom: 2px solid rgba(75, 224, 255, 0.2); }
.page-header h1 { font-size: 2.5rem; color: var(--text-primary); font-weight: 700; }
.content-wrapper { max-width: 800px; margin: 0 auto; display: grid; gap: 1.5rem; }
.content-wrapper p { font-size: 1.05rem; line-height: 1.75; color: var(--text-secondary); margin-bottom: 1.5rem; }
.content-wrapper p:last-child { margin-bottom: 0; }
.content-wrapper strong { color: var(--text-primary); font-weight: 700; }
.content-wrapper a { color: var(--navy-700); font-weight: 700; text-decoration: none; border-bottom: 1px solid rgba(36, 54, 82, 0.28); }
.content-wrapper a:hover, .content-wrapper a:focus-visible { color: var(--cyan-600); border-bottom-color: rgba(29, 210, 255, 0.5); }

.product-page { background-color: var(--mist-50); }
.product-hero { padding: 3rem 0; background-color: #ffffff; }
.product-hero-grid { display: grid; grid-template-columns: 1fr; gap: 3rem; align-items: center; }
.product-hero-image { position: relative; text-align: center; padding: 2rem; }
.product-hero-image img { max-width: 400px; margin: 0 auto; }
.product-badge { position: absolute; top: 1rem; right: 1rem; background: rgba(75, 224, 255, 0.14); color: #043049; padding: 0.5rem 1rem; border-radius: var(--radius-md); font-size: 0.875rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; border: 1px solid rgba(75, 224, 255, 0.45); }
.product-hero-content h1 { font-size: 2.5rem; color: var(--text-primary); margin-bottom: 0.5rem; font-weight: 700; }
.product-subtitle { font-size: 1.25rem; color: var(--navy-700); margin-bottom: 1.5rem; font-weight: 600; }
.product-description { margin-bottom: 2rem; }
.product-description p { font-size: 1.05rem; line-height: 1.7; color: var(--text-secondary); }
.product-benefits h3 { font-size: 1.25rem; color: var(--text-primary); margin-bottom: 1rem; font-weight: 700; }
.product-benefits ul { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.75rem; list-style: none; padding: 0; }
.product-benefits li { display: flex; align-items: center; gap: 0.5rem; padding: 0.75rem; background-color: var(--mist-100); border-radius: var(--radius-md); color: var(--text-primary); font-weight: 600; border: 1px solid var(--mist-200); }
.product-benefits li::before { content: ">"; color: var(--cyan-500); font-weight: 700; font-size: 1.1rem; }

.product-checkout { padding: 3rem 0; }
.checkout-box { background: linear-gradient(135deg, #eef6ff 0%, #d7e7fa 100%); border-radius: var(--radius-lg); padding: 2.5rem; box-shadow: var(--shadow-soft); }
.checkout-box h2 { text-align: center; font-size: 2rem; color: var(--text-primary); margin-bottom: 2rem; font-weight: 700; }
.checkout-content { display: grid; grid-template-columns: 1fr; gap: 2rem; max-width: 900px; margin: 0 auto; background-color: #ffffff; padding: 2rem; border-radius: var(--radius-lg); box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06); border: 1px solid var(--mist-200); }
.product-package { position: relative; text-align: center; padding: 1.5rem; }
.package-badge { position: absolute; top: 0; left: 50%; transform: translateX(-50%); background: linear-gradient(135deg, var(--cyan-500) 0%, var(--cyan-600) 100%); color: #031023; padding: 0.75rem 1.5rem; border-radius: 2rem; font-size: 1.05rem; font-weight: 800; box-shadow: 0 12px 26px rgba(0, 184, 230, 0.32); }
.package-image { max-width: 250px; margin: 2rem auto 0; }
.package-details { text-align: center; }
.package-title { font-size: 1.75rem; color: var(--text-primary); margin-bottom: 1.5rem; font-weight: 700; }
.package-title span { color: var(--cyan-500); font-weight: 800; }
.package-pricing { margin-bottom: 2rem; }
.price-main { display: flex; align-items: baseline; justify-content: center; gap: 0.25rem; margin-bottom: 1rem; }
.price-value { font-size: 3.5rem; color: var(--text-primary); font-weight: 800; }
.price-unit { font-size: 1.25rem; color: var(--text-secondary); }
.price-details { font-size: 1.05rem; }
.price-details p { margin-bottom: 0.5rem; color: var(--text-secondary); }
.price-old { text-decoration: line-through; color: #a0aec0; margin-right: 0.5rem; }
.shipping-info { font-size: 0.95rem; color: #718096; }
.checkout-btn { width: 100%; background: linear-gradient(135deg, var(--navy-700) 0%, var(--navy-600) 100%); color: #ffffff; border: none; padding: 1.15rem 2rem; border-radius: var(--radius-md); font-size: 1.1rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em; cursor: pointer; transition: all 0.3s ease; box-shadow: 0 10px 24px rgba(18, 30, 54, 0.35); margin-bottom: 1.5rem; }
.checkout-btn:hover, .checkout-btn:focus-visible { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(18, 30, 54, 0.42); }
.package-features { display: flex; flex-direction: column; gap: 0.75rem; }
.package-features .feature-item { display: flex; align-items: center; gap: 0.75rem; padding: 0.75rem; background-color: var(--mist-100); border-radius: var(--radius-md); font-size: 1rem; color: var(--text-primary); border: 1px solid var(--mist-200); }
.package-features .feature-icon { color: var(--cyan-500); font-weight: 700; font-size: 1.25rem; }

.product-guarantee { padding: 3rem 0; background-color: #ffffff; }
.product-guarantee .guarantee-content { display: flex; align-items: center; justify-content: center; gap: 2rem; text-align: center; padding: 2rem; background-color: var(--mist-100); border-radius: var(--radius-lg); border: 1px solid var(--mist-200); }
.product-guarantee .guarantee-seal { width: 80px; height: 80px; background: linear-gradient(135deg, var(--navy-700) 0%, var(--navy-600) 100%); color: #ffffff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 2.2rem; font-weight: 800; flex-shrink: 0; }
.product-guarantee .guarantee-text h2 { font-size: 1.75rem; color: var(--text-primary); margin-bottom: 0.5rem; font-weight: 800; }
.product-guarantee .guarantee-text p { font-size: 1.05rem; color: var(--text-secondary); line-height: 1.6; }

@media (min-width: 768px) {
  .hero { padding: 4.5rem 0 5rem; }
  .site-footer .container { align-items: center; }
  .site-footer .footer-content { flex-direction: row; justify-content: space-between; align-items: center; }
  .footer-info { text-align: left; }
  .article-main { padding: 4rem 0 5rem; }
  .article-content { font-size: 1.05rem; }
  .article-cta { padding: 2rem 2.5rem; }
  .product-hero-grid { grid-template-columns: 1fr 1fr; }
  .checkout-content { grid-template-columns: 1fr 1fr; align-items: center; }
  .package-details { text-align: left; }
  .price-main { justify-content: flex-start; }
  .product-guarantee .guarantee-content { text-align: left; }
}

@media (max-width: 767px) {
  section { padding: 3rem 0; }
  .header-main .container { flex-direction: column; align-items: flex-start; }
  .primary-nav { width: 100%; justify-content: flex-start; gap: 0.75rem; }
  .hero-copy h1 { font-size: clamp(2rem, 7vw, 2.8rem); }
  .panel-footer { flex-direction: column; align-items: flex-start; }
  .products-hero .products-hero-content h1 { font-size: 2rem; }
  .product-benefits ul { grid-template-columns: 1fr; }
  .checkout-box { padding: 1.5rem; }
  .checkout-content { padding: 1.5rem; }
  .price-value { font-size: 2.6rem; }
  .product-guarantee .guarantee-content { flex-direction: column; }
  .footer-content { text-align: center; }
  .footer-nav { justify-content: center; }
}