/* =============================================
   TP-Link Website Redesign — style.css
   ============================================= */

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

:root {
  --primary:   #0066CC;
  --accent:    #00B4D8;
  --warm:      #FF8C42;
  --bg:        #FFFFFF;
  --bg-light:  #F8F9FA;
  --bg-dark:   #0A1628;
  --text:      #1A1A2E;
  --text-2:    #6C757D;
  --success:   #28A745;
  --border:    #E8ECF0;
  --nav-h:     68px;
  --radius:    14px;
  --radius-lg: 24px;
  --shadow:    0 2px 16px rgba(0,0,0,.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,.12);
  --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: .22s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* ---------- Typography ---------- */
.t-hero   { font-size: clamp(2.4rem, 5vw, 4.2rem); font-weight: 700; line-height: 1.12; letter-spacing: -.03em; }
.t-h1     { font-size: clamp(2rem, 3.6vw, 3rem);   font-weight: 700; line-height: 1.2;  letter-spacing: -.02em; }
.t-h2     { font-size: clamp(1.6rem, 2.8vw, 2.2rem); font-weight: 700; line-height: 1.25; letter-spacing: -.015em; }
.t-h3     { font-size: 1.25rem; font-weight: 600; line-height: 1.35; }
.t-body   { font-size: 1.0625rem; line-height: 1.65; color: var(--text-2); }
.t-small  { font-size: .875rem; line-height: 1.55; }
.t-label  { font-size: .75rem; font-weight: 600; letter-spacing: .07em; text-transform: uppercase; }

/* ---------- Layout Utilities ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-wide { max-width: 1440px; margin: 0 auto; padding: 0 40px; }
.section  { padding: 80px 0; }
.section-sm { padding: 56px 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 28px; border-radius: 50px; font-weight: 600; font-size: .9375rem;
  transition: var(--transition); white-space: nowrap;
}
.btn-primary {
  background: var(--primary); color: #fff;
  box-shadow: 0 4px 14px rgba(0,102,204,.35);
}
.btn-primary:hover { background: #0052a3; box-shadow: 0 6px 20px rgba(0,102,204,.45); transform: translateY(-1px); }
.btn-accent {
  background: var(--accent); color: #fff;
  box-shadow: 0 4px 14px rgba(0,180,216,.35);
}
.btn-accent:hover { background: #0099bb; transform: translateY(-1px); }
.btn-outline {
  border: 2px solid var(--primary); color: var(--primary); background: transparent;
}
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-ghost { color: var(--primary); font-weight: 600; padding: 10px 16px; border-radius: 8px; }
.btn-ghost:hover { background: rgba(0,102,204,.08); }
.btn-lg { padding: 18px 40px; font-size: 1.0625rem; }
.btn-sm { padding: 10px 20px; font-size: .875rem; }

.btn-cart {
  background: var(--primary); color: #fff; border-radius: 50px;
  padding: 15px 32px; font-size: 1.0625rem; font-weight: 600;
  box-shadow: 0 4px 16px rgba(0,102,204,.4);
  transition: var(--transition);
}
.btn-cart:hover { background: #0052a3; transform: translateY(-1px); }

/* ---------- Badges ---------- */
.badge {
  display: inline-flex; align-items: center;
  padding: 4px 12px; border-radius: 50px; font-size: .75rem; font-weight: 700;
  letter-spacing: .04em; text-transform: uppercase;
}
.badge-warm    { background: var(--warm); color: #fff; }
.badge-primary { background: var(--primary); color: #fff; }
.badge-success { background: var(--success); color: #fff; }
.badge-outline { border: 2px solid var(--border); color: var(--text-2); }

/* ---------- Navigation ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid rgba(0,0,0,.06);
  transition: box-shadow var(--transition);
}
.nav.scrolled { box-shadow: var(--shadow); }

.nav-inner {
  display: flex; align-items: center; gap: 0;
  width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px;
}

.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 1.25rem; color: var(--primary);
  flex-shrink: 0; margin-right: 32px;
}
.logo-mark {
  width: 34px; height: 34px; background: var(--primary); border-radius: 8px;
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: .8rem; font-weight: 900;
}

.nav-links {
  display: flex; align-items: center; gap: 4px; flex: 1;
}
.nav-link {
  padding: 8px 14px; border-radius: 8px; font-size: .9375rem; font-weight: 500;
  color: var(--text); transition: var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--primary); background: rgba(0,102,204,.07); }

.nav-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.nav-icon-btn {
  width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
  color: var(--text); transition: var(--transition); font-size: 1.1rem;
}
.nav-icon-btn:hover { background: var(--bg-light); color: var(--primary); }

.nav-shop-btn {
  background: var(--primary); color: #fff; padding: 9px 20px;
  border-radius: 50px; font-weight: 600; font-size: .875rem;
  transition: var(--transition);
}
.nav-shop-btn:hover { background: #0052a3; }

/* ---------- Hero ---------- */
.hero {
  min-height: 90vh; display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden; padding-top: var(--nav-h);
  background: linear-gradient(135deg, #0A1628 0%, #0d2750 35%, #0066CC 70%, #00B4D8 100%);
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 70% 40%, rgba(0,180,216,.25) 0%, transparent 70%);
}
.hero-content {
  position: relative; z-index: 2; text-align: center;
  max-width: 820px; padding: 48px 24px;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.2);
  border-radius: 50px; padding: 8px 18px; margin-bottom: 28px;
  font-size: .8125rem; font-weight: 600; color: rgba(255,255,255,.9);
  letter-spacing: .06em; text-transform: uppercase;
}
.hero h1 { color: #fff; margin-bottom: 20px; }
.hero p { color: rgba(255,255,255,.78); font-size: clamp(1rem, 1.8vw, 1.25rem); margin-bottom: 40px; line-height: 1.6; }
.hero-ctas { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-ctas .btn-primary { background: #fff; color: var(--primary); box-shadow: 0 4px 20px rgba(0,0,0,.2); }
.hero-ctas .btn-primary:hover { background: #f0f4ff; }
.hero-ctas .btn-outline { border-color: rgba(255,255,255,.5); color: #fff; }
.hero-ctas .btn-outline:hover { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.8); }

.hero-scroll { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); z-index: 2; }
.scroll-indicator {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: rgba(255,255,255,.5); font-size: .75rem; letter-spacing: .08em; text-transform: uppercase;
  animation: bounce 2s infinite;
}
.scroll-indicator svg { opacity: .7; }
@keyframes bounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(6px)} }

/* ---------- Trust Bar ---------- */
.trust-bar {
  background: var(--bg-light); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 20px 24px;
}
.trust-bar-inner {
  display: flex; align-items: center; justify-content: center; gap: 0;
  max-width: 900px; margin: 0 auto; flex-wrap: wrap;
}
.trust-item {
  display: flex; align-items: center; gap: 10px; padding: 8px 36px;
  border-right: 1px solid var(--border);
}
.trust-item:last-child { border-right: none; }
.trust-item-icon { font-size: 1.4rem; }
.trust-item-text strong { display: block; font-size: 1rem; font-weight: 700; color: var(--text); }
.trust-item-text span  { font-size: .8125rem; color: var(--text-2); }

/* ---------- Product Showcase (Home) ---------- */
.product-showcase {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
  padding: 80px 0;
}
.product-showcase.reverse { direction: rtl; }
.product-showcase.reverse > * { direction: ltr; }

.product-image-placeholder {
  border-radius: var(--radius-lg); overflow: hidden;
  aspect-ratio: 4/3; position: relative;
  background: linear-gradient(135deg, #e8f0fb, #c8ddf5);
  display: flex; align-items: center; justify-content: center;
}
.product-image-placeholder img { width: 100%; height: 100%; object-fit: cover; }
.product-image-label {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 8px; color: rgba(0,102,204,.5);
  font-size: .8125rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
}
.product-image-label .img-icon { font-size: 3rem; opacity: .4; }

.showcase-eyebrow { color: var(--primary); margin-bottom: 12px; }
.showcase-title { margin-bottom: 16px; }
.showcase-desc { margin-bottom: 32px; }
.benefit-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 36px; }
.benefit-item { display: flex; align-items: flex-start; gap: 12px; }
.benefit-icon {
  width: 36px; height: 36px; border-radius: 10px; background: rgba(0,102,204,.1);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 1rem;
}
.benefit-text strong { display: block; font-weight: 600; margin-bottom: 2px; }
.benefit-text span { font-size: .875rem; color: var(--text-2); }

/* ---------- Section Headers ---------- */
.section-header { text-align: center; margin-bottom: 52px; }
.section-header .eyebrow { color: var(--primary); margin-bottom: 10px; }
.section-header h2 { margin-bottom: 14px; }
.section-header p { max-width: 520px; margin: 0 auto; }

/* ---------- Cards Grid ---------- */
.cards-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cards-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.cards-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* Scenario Cards */
.scenario-card {
  background: var(--bg); border: 1.5px solid var(--border); border-radius: var(--radius);
  padding: 32px; transition: var(--transition); cursor: pointer; position: relative; overflow: hidden;
}
.scenario-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--primary); transform: scaleX(0); transform-origin: left; transition: var(--transition);
}
.scenario-card:hover { box-shadow: var(--shadow-lg); border-color: rgba(0,102,204,.2); transform: translateY(-4px); }
.scenario-card:hover::before { transform: scaleX(1); }
.scenario-icon { font-size: 2.5rem; margin-bottom: 16px; }
.scenario-card h3 { margin-bottom: 8px; }
.scenario-card p { font-size: .9375rem; color: var(--text-2); line-height: 1.6; margin-bottom: 20px; }
.card-link { color: var(--primary); font-weight: 600; font-size: .9375rem; display: inline-flex; align-items: center; gap: 6px; }
.card-link:hover { gap: 10px; }

/* ---------- HomeShield Mini ---------- */
.homeshield-mini {
  background: linear-gradient(135deg, #0A1628, #0d2750);
  border-radius: var(--radius-lg); padding: 40px 48px;
  display: grid; grid-template-columns: auto 1fr auto; gap: 32px; align-items: center;
}
.hs-icon-wrap { font-size: 2.5rem; }
.hs-text h3 { color: #fff; margin-bottom: 6px; }
.hs-text p { color: rgba(255,255,255,.65); font-size: .9375rem; }
.hs-cta .btn-outline { border-color: rgba(255,255,255,.3); color: #fff; }
.hs-cta .btn-outline:hover { background: rgba(255,255,255,.12); }

/* ---------- Finder CTA Card ---------- */
.finder-cta-card {
  background: linear-gradient(135deg, #f0f7ff, #e8f0fb);
  border: 1.5px solid rgba(0,102,204,.15); border-radius: var(--radius-lg);
  padding: 48px; text-align: center; margin: 48px 0;
}
.finder-cta-card h2 { margin-bottom: 12px; }
.finder-cta-card p { max-width: 480px; margin: 0 auto 28px; }

/* ---------- Media Bar ---------- */
.media-bar { padding: 32px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.media-bar-inner {
  display: flex; align-items: center; justify-content: center;
  gap: 48px; flex-wrap: wrap;
}
.media-bar-label { color: var(--text-2); font-size: .8125rem; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; }
.media-logo {
  display: flex; align-items: center; gap: 6px;
  font-weight: 700; font-size: 1rem; color: var(--text-2);
  opacity: .6; transition: var(--transition);
}
.media-logo:hover { opacity: 1; color: var(--text); }
.media-award { font-size: .7rem; color: var(--warm); font-weight: 700; }

/* ---------- Footer ---------- */
.footer-benefits {
  background: var(--primary); padding: 20px 0; color: #fff;
}
.footer-benefits-inner {
  display: flex; justify-content: center; gap: 0; flex-wrap: wrap;
  max-width: 800px; margin: 0 auto;
}
.fb-item {
  display: flex; align-items: center; gap: 10px; padding: 8px 32px;
  border-right: 1px solid rgba(255,255,255,.2); font-size: .9rem; font-weight: 500;
}
.fb-item:last-child { border-right: none; }
.fb-icon { font-size: 1.2rem; }

.footer {
  background: #0A1628; color: rgba(255,255,255,.7); padding: 60px 0 32px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px;
}
.footer-brand { }
.footer-logo { font-weight: 800; font-size: 1.25rem; color: #fff; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
.footer-tagline { font-size: .875rem; line-height: 1.6; color: rgba(255,255,255,.5); max-width: 240px; margin-bottom: 24px; }
.footer-social { display: flex; gap: 12px; }
.social-icon {
  width: 36px; height: 36px; border-radius: 8px; background: rgba(255,255,255,.08);
  display: flex; align-items: center; justify-content: center; font-size: .875rem;
  transition: var(--transition);
}
.social-icon:hover { background: var(--primary); color: #fff; }

.footer-col h4 { color: #fff; font-size: .9375rem; font-weight: 600; margin-bottom: 16px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: .875rem; color: rgba(255,255,255,.5); transition: var(--transition); }
.footer-links a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: .8125rem; color: rgba(255,255,255,.35); }
.footer-legal { display: flex; gap: 20px; }
.footer-legal a { font-size: .8125rem; color: rgba(255,255,255,.35); transition: var(--transition); }
.footer-legal a:hover { color: rgba(255,255,255,.7); }

/* ---------- Deco Page ---------- */
.deco-hero {
  background: linear-gradient(160deg, #0A1628 0%, #0d2750 50%, #1a3a6b 100%);
  padding: calc(var(--nav-h) + 60px) 0 80px; text-align: center;
}
.deco-hero h1 { color: #fff; margin-bottom: 16px; }
.deco-hero p { color: rgba(255,255,255,.7); font-size: 1.125rem; margin-bottom: 36px; max-width: 560px; margin-left: auto; margin-right: auto; }
.video-placeholder {
  max-width: 760px; margin: 48px auto 0; border-radius: var(--radius-lg); overflow: hidden;
  aspect-ratio: 16/9; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  display: flex; align-items: center; justify-content: center; cursor: pointer; position: relative;
}
.video-play {
  width: 72px; height: 72px; border-radius: 50%; background: rgba(255,255,255,.15);
  border: 2px solid rgba(255,255,255,.4); display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; color: #fff; transition: var(--transition);
}
.video-placeholder:hover .video-play { background: var(--primary); border-color: var(--primary); transform: scale(1.1); }
.video-label { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,.5); font-size: .8125rem; }

/* Product Tier Grid */
.tier-section { padding: 80px 0; }
.tier-label {
  display: flex; align-items: center; gap: 10px;
  font-size: .875rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  color: var(--text-2); margin-bottom: 20px;
}
.tier-label::after { content: ''; flex: 1; height: 1px; background: var(--border); }

/* Flagship card */
.product-card {
  background: var(--bg); border: 1.5px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: var(--transition); position: relative;
  display: flex; flex-direction: column;
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: rgba(0,102,204,.2); }
.product-card.flagship {
  border-color: var(--primary); box-shadow: 0 0 0 1px var(--primary), var(--shadow);
}
.flagship-banner {
  background: var(--primary); color: #fff; text-align: center;
  padding: 8px; font-size: .75rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
}
.product-card-img {
  background: linear-gradient(135deg, #f0f7ff, #e8f0fb);
  aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center;
  color: rgba(0,102,204,.4); font-size: .8125rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
  flex-direction: column; gap: 8px; font-size: 2.5rem;
}
.product-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.product-card-body .badge { margin-bottom: 10px; }
.product-card-name { font-weight: 700; font-size: 1.0625rem; margin-bottom: 4px; }
.product-card-tagline { font-size: .875rem; color: var(--text-2); margin-bottom: 12px; line-height: 1.5; flex: 1; }
.product-card-coverage { font-size: .8125rem; color: var(--text-2); margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
.product-card-price { font-size: 1.375rem; font-weight: 700; color: var(--text); margin-bottom: 16px; }
.product-card-price span { font-size: .875rem; font-weight: 400; color: var(--text-2); }
.product-card-cta { width: 100%; }

.flagship-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 20px; margin-bottom: 32px; }
.premium-grid  { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 32px; }
.popular-grid  { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 32px; }

/* Tech Features */
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.tech-card {
  background: var(--bg-light); border-radius: var(--radius); padding: 32px;
  transition: var(--transition);
}
.tech-card:hover { box-shadow: var(--shadow); }
.tech-icon { font-size: 2.5rem; margin-bottom: 16px; }
.tech-card h3 { margin-bottom: 8px; }
.tech-card p { font-size: .9375rem; color: var(--text-2); line-height: 1.6; }

/* Reviews */
.reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.review-card {
  background: var(--bg); border: 1.5px solid var(--border); border-radius: var(--radius);
  padding: 28px; transition: var(--transition);
}
.review-card:hover { box-shadow: var(--shadow); }
.review-stars { color: #FFB800; font-size: 1rem; margin-bottom: 12px; letter-spacing: .1em; }
.review-text { font-size: .9375rem; line-height: 1.65; color: var(--text); margin-bottom: 16px; font-style: italic; }
.reviewer { display: flex; align-items: center; gap: 10px; }
.reviewer-avatar {
  width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: .875rem;
}
.reviewer-name { font-weight: 600; font-size: .875rem; }
.reviewer-location { font-size: .8125rem; color: var(--text-2); }

/* ---------- Finder Page ---------- */
.finder-hero {
  background: linear-gradient(160deg, #f0f7ff 0%, #e8f0fb 100%);
  padding: calc(var(--nav-h) + 60px) 0 60px; text-align: center;
}
.finder-hero h1 { margin-bottom: 12px; }
.finder-hero p { color: var(--text-2); max-width: 480px; margin: 0 auto; }

.wizard-section { padding: 60px 0 80px; }
.wizard-wrap {
  max-width: 720px; margin: 0 auto; padding: 0 24px;
}

/* Progress bar */
.wizard-progress { margin-bottom: 40px; }
.progress-steps {
  display: flex; align-items: center; gap: 0; margin-bottom: 8px;
}
.progress-step {
  flex: 1; display: flex; flex-direction: column; align-items: center; position: relative;
}
.progress-step::before {
  content: ''; position: absolute; top: 18px; left: 50%; right: -50%;
  height: 2px; background: var(--border); z-index: 0;
}
.progress-step:last-child::before { display: none; }
.progress-step.completed::before { background: var(--primary); }
.step-dot {
  width: 36px; height: 36px; border-radius: 50%; border: 2px solid var(--border);
  background: var(--bg); z-index: 1; display: flex; align-items: center; justify-content: center;
  font-size: .8125rem; font-weight: 700; color: var(--text-2); transition: var(--transition);
}
.progress-step.active .step-dot { border-color: var(--primary); color: var(--primary); background: rgba(0,102,204,.08); }
.progress-step.completed .step-dot { border-color: var(--primary); background: var(--primary); color: #fff; }
.step-label { font-size: .75rem; font-weight: 500; color: var(--text-2); margin-top: 8px; text-align: center; }
.progress-step.active .step-label { color: var(--primary); font-weight: 600; }

/* Wizard cards */
.wizard-card {
  background: var(--bg); border: 1.5px solid var(--border); border-radius: var(--radius-lg);
  padding: 40px; box-shadow: var(--shadow);
}
.wizard-q { margin-bottom: 8px; }
.wizard-sub { margin-bottom: 32px; }

.option-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.option-btn {
  border: 2px solid var(--border); border-radius: var(--radius); padding: 20px 16px;
  text-align: center; cursor: pointer; transition: var(--transition); background: var(--bg);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.option-btn:hover { border-color: var(--primary); background: rgba(0,102,204,.04); }
.option-btn.selected { border-color: var(--primary); background: rgba(0,102,204,.07); box-shadow: 0 0 0 1px var(--primary); }
.option-icon { font-size: 2rem; }
.option-label { font-weight: 600; font-size: .9375rem; color: var(--text); }
.option-sublabel { font-size: .8125rem; color: var(--text-2); }

.option-grid-3 { grid-template-columns: repeat(3, 1fr); }

.checkbox-grid { display: flex; flex-direction: column; gap: 12px; }
.checkbox-option {
  border: 2px solid var(--border); border-radius: var(--radius); padding: 16px 20px;
  display: flex; align-items: center; gap: 14px; cursor: pointer; transition: var(--transition);
}
.checkbox-option:hover { border-color: var(--primary); background: rgba(0,102,204,.04); }
.checkbox-option.checked { border-color: var(--primary); background: rgba(0,102,204,.07); }
.checkbox-box {
  width: 22px; height: 22px; border-radius: 6px; border: 2px solid var(--border);
  background: var(--bg); flex-shrink: 0; display: flex; align-items: center; justify-content: center;
  transition: var(--transition); font-size: .75rem; color: #fff;
}
.checkbox-option.checked .checkbox-box { background: var(--primary); border-color: var(--primary); }
.checkbox-text strong { display: block; font-weight: 600; font-size: .9375rem; }
.checkbox-text span { font-size: .8125rem; color: var(--text-2); }

.wizard-nav {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border);
}

/* Wizard steps — show/hide */
.wizard-step { display: none; }
.wizard-step.active { display: block; }

/* Result card */
.result-card {
  background: linear-gradient(135deg, #f0f7ff, #e8f0fb);
  border: 2px solid var(--primary); border-radius: var(--radius-lg);
  padding: 40px; text-align: center;
}
.result-img {
  width: 180px; height: 160px; margin: 0 auto 24px;
  background: linear-gradient(135deg, #c8ddf5, #a8c8f0);
  border-radius: var(--radius); display: flex; align-items: center; justify-content: center;
  font-size: 3.5rem;
}
.result-name { font-size: 1.75rem; font-weight: 700; margin-bottom: 8px; }
.result-price { font-size: 1.375rem; color: var(--primary); font-weight: 700; margin-bottom: 8px; }
.result-reason { color: var(--text-2); margin-bottom: 20px; line-height: 1.6; }
.result-dtc-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(40,167,69,.1); border: 1px solid rgba(40,167,69,.25);
  border-radius: 50px; padding: 10px 20px;
  color: #1a6e2e; font-size: .875rem; font-weight: 600; margin-bottom: 24px;
}
.result-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* Fade in animation */
.wizard-card { animation: fadeUp .3s ease both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- PDP Page ---------- */
.pdp-hero {
  padding: calc(var(--nav-h) + 48px) 0 64px;
  background: var(--bg);
}
.pdp-hero-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start;
}
.pdp-image-main {
  background: linear-gradient(135deg, #f0f7ff, #e0eeff);
  border-radius: var(--radius-lg); aspect-ratio: 1; display: flex;
  align-items: center; justify-content: center; font-size: 6rem; position: sticky; top: 84px;
}
.pdp-thumbnails { display: flex; gap: 10px; margin-top: 14px; }
.pdp-thumb {
  width: 72px; height: 72px; border-radius: 10px; border: 2px solid var(--border);
  background: #f0f7ff; display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem; cursor: pointer; transition: var(--transition);
}
.pdp-thumb:hover, .pdp-thumb.active { border-color: var(--primary); }
.pdp-thumb:first-child { border-color: var(--primary); }

.pdp-info { }
.pdp-breadcrumb { display: flex; align-items: center; gap: 6px; font-size: .8125rem; color: var(--text-2); margin-bottom: 16px; }
.pdp-breadcrumb a:hover { color: var(--primary); }
.pdp-breadcrumb span { color: var(--border); }
.pdp-badge-row { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.pdp-title { margin-bottom: 12px; }
.pdp-stars { display: flex; align-items: center; gap: 8px; margin-bottom: 20px; }
.star-row { color: #FFB800; font-size: 1.0625rem; letter-spacing: .05em; }
.review-count { font-size: .875rem; color: var(--text-2); }
.review-count a { color: var(--primary); font-weight: 500; }
.pdp-price {
  font-size: 2.25rem; font-weight: 800; color: var(--text); margin-bottom: 24px; letter-spacing: -.02em;
}
.pdp-price-note { font-size: .875rem; font-weight: 400; color: var(--text-2); margin-left: 4px; }

.pack-selector { margin-bottom: 24px; }
.pack-label { font-size: .875rem; font-weight: 600; margin-bottom: 10px; color: var(--text); }
.pack-options { display: flex; gap: 10px; }
.pack-btn {
  flex: 1; padding: 12px 10px; border: 2px solid var(--border); border-radius: 10px;
  text-align: center; cursor: pointer; transition: var(--transition); background: var(--bg);
}
.pack-btn:hover { border-color: var(--primary); }
.pack-btn.active { border-color: var(--primary); background: rgba(0,102,204,.07); }
.pack-btn .pack-count { display: block; font-weight: 700; font-size: 1rem; }
.pack-btn .pack-coverage { display: block; font-size: .75rem; color: var(--text-2); margin-top: 2px; }
.pack-btn .pack-price { display: block; font-weight: 600; font-size: .875rem; color: var(--primary); margin-top: 4px; }

.pdp-cta-row { display: flex; gap: 12px; margin-bottom: 28px; }
.pdp-cta-row .btn-cart { flex: 1; }
.pdp-wish {
  width: 52px; height: 52px; border-radius: 12px; border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center; font-size: 1.1rem;
  transition: var(--transition); flex-shrink: 0;
}
.pdp-wish:hover { border-color: #e83e5a; color: #e83e5a; }

.dtc-benefits {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 24px;
}
.dtc-item {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-light); border-radius: 10px; padding: 10px 12px;
  font-size: .8125rem; font-weight: 500; color: var(--text);
}
.dtc-item .dtc-icon { font-size: 1rem; }

/* Sticky buy bar */
.sticky-bar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 800;
  background: rgba(255,255,255,.95); backdrop-filter: blur(16px);
  border-top: 1px solid var(--border); box-shadow: 0 -4px 20px rgba(0,0,0,.1);
  padding: 14px 24px;
  transform: translateY(100%); transition: transform .3s cubic-bezier(.4,0,.2,1);
}
.sticky-bar.visible { transform: translateY(0); }
.sticky-bar-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.sticky-product-info h4 { font-weight: 700; font-size: 1rem; }
.sticky-product-info span { font-size: .875rem; color: var(--text-2); }
.sticky-price { font-size: 1.25rem; font-weight: 800; color: var(--text); }
.sticky-cta { display: flex; gap: 12px; align-items: center; }

/* Core benefits section */
.benefit-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.core-benefit-card {
  background: var(--bg-light); border-radius: var(--radius); padding: 28px 20px; text-align: center;
  transition: var(--transition);
}
.core-benefit-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.cbc-icon { font-size: 2.5rem; margin-bottom: 14px; }
.cbc-value { font-size: 1.5rem; font-weight: 800; margin-bottom: 4px; }
.cbc-label { font-size: .875rem; color: var(--text-2); line-height: 1.4; }

/* How it works */
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; text-align: center; }
.how-step { position: relative; }
.how-step::after {
  content: '→'; position: absolute; right: -20px; top: 32px;
  font-size: 1.5rem; color: var(--border); font-weight: 700;
}
.how-step:last-child::after { display: none; }
.how-num {
  width: 64px; height: 64px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; font-size: 1.5rem; font-weight: 800; display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
}
.how-step h3 { margin-bottom: 8px; }
.how-step p { font-size: .9375rem; color: var(--text-2); }

/* Accordion */
.accordion { border: 1.5px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.accordion-item { border-bottom: 1px solid var(--border); }
.accordion-item:last-child { border-bottom: none; }
.accordion-header {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  padding: 20px 24px; background: var(--bg); cursor: pointer;
  font-weight: 600; font-size: 1rem; text-align: left; transition: var(--transition);
}
.accordion-header:hover { background: var(--bg-light); }
.accordion-icon { font-size: 1.25rem; color: var(--text-2); transition: transform var(--transition); }
.accordion-item.open .accordion-icon { transform: rotate(45deg); }
.accordion-body { max-height: 0; overflow: hidden; transition: max-height .35s cubic-bezier(.4,0,.2,1); }
.accordion-item.open .accordion-body { max-height: 400px; }
.accordion-content { padding: 0 24px 24px; }
.specs-table { width: 100%; border-collapse: collapse; }
.specs-table tr { border-bottom: 1px solid var(--border); }
.specs-table tr:last-child { border-bottom: none; }
.specs-table td { padding: 10px 0; font-size: .9375rem; }
.specs-table td:first-child { color: var(--text-2); width: 40%; }
.specs-table td:last-child { font-weight: 500; }

/* Media reviews */
.media-review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.media-review-card {
  background: var(--bg-light); border-radius: var(--radius); padding: 24px;
  border-left: 3px solid var(--primary);
}
.media-quote { font-size: .9375rem; line-height: 1.65; color: var(--text); margin-bottom: 14px; font-style: italic; }
.media-source { font-size: .8125rem; font-weight: 700; color: var(--primary); letter-spacing: .04em; }
.media-award-tag { font-size: .75rem; color: var(--warm); font-weight: 600; margin-top: 4px; }

/* Related products */
.related-carousel { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* ---------- Animations / Scroll FX ---------- */
.fade-in {
  opacity: 0; transform: translateY(24px);
  transition: opacity .5s ease, transform .5s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

.fade-in-left  { opacity: 0; transform: translateX(-32px); transition: opacity .5s ease, transform .5s ease; }
.fade-in-right { opacity: 0; transform: translateX( 32px); transition: opacity .5s ease, transform .5s ease; }
.fade-in-left.visible, .fade-in-right.visible { opacity: 1; transform: translateX(0); }

/* Stagger children */
.stagger > *:nth-child(1) { transition-delay: .0s; }
.stagger > *:nth-child(2) { transition-delay: .08s; }
.stagger > *:nth-child(3) { transition-delay: .16s; }
.stagger > *:nth-child(4) { transition-delay: .24s; }

/* ---------- Dark section ---------- */
.dark-section { background: var(--bg-dark); color: #fff; }
.dark-section .t-body { color: rgba(255,255,255,.65); }

/* ---------- Dividers ---------- */
.divider { height: 1px; background: var(--border); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
  .footer-grid > *:nth-child(4), .footer-grid > *:nth-child(5) { grid-column: auto; }
  .flagship-grid { grid-template-columns: 1fr 1fr; }
  .flagship-grid .product-card:first-child { grid-column: 1 / -1; }
  .benefit-cards { grid-template-columns: repeat(2, 1fr); }
  .media-review-grid { grid-template-columns: 1fr 1fr; }
  .related-carousel { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --nav-h: 60px; }
  .nav-links { display: none; }
  .nav-shop-btn { display: none; }
  .section { padding: 56px 0; }
  .product-showcase { grid-template-columns: 1fr; gap: 32px; }
  .product-showcase.reverse { direction: ltr; }
  .cards-grid-3, .tech-grid, .how-grid { grid-template-columns: 1fr; }
  .cards-grid-4, .benefit-cards { grid-template-columns: repeat(2, 1fr); }
  .premium-grid, .popular-grid { grid-template-columns: repeat(2, 1fr); }
  .flagship-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .pdp-hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .pdp-image-main { position: static; aspect-ratio: 1; }
  .dtc-benefits { grid-template-columns: 1fr; }
  .homeshield-mini { grid-template-columns: 1fr; text-align: center; }
  .media-review-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .option-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-item { padding: 8px 20px; }
  .how-step::after { display: none; }
  .pack-options { gap: 8px; }
  .footer-benefits-inner { gap: 0; }
  .fb-item { padding: 8px 16px; }
  .media-bar-inner { gap: 24px; }
  .footer-grid > *:nth-child(3), .footer-grid > *:nth-child(4), .footer-grid > *:nth-child(5) { display: none; }
  .related-carousel { grid-template-columns: repeat(2, 1fr); }
  .pdp-cta-row .btn-cart { font-size: .9375rem; padding: 15px 20px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-ctas { flex-direction: column; align-items: center; }
  .hero-ctas .btn { width: 100%; max-width: 320px; }
  .cards-grid-4, .benefit-cards, .popular-grid { grid-template-columns: 1fr; }
  .trust-item { width: 100%; justify-content: center; border-right: none; border-bottom: 1px solid var(--border); }
  .option-grid { grid-template-columns: 1fr; }
  .option-grid-3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}