/* ============================================================
   Sight Bulb — Shared Stylesheet
   Palette: Navy #16233F, Deep Navy #0E1830, Accent Yellow #FFC72C,
            Strip/Panel #F4F6FA, White #FFFFFF, Slate text #33415C
   Display face: "Fraunces" (classic, editorial serif)
   Body face: "Source Sans 3"
   ============================================================ */

:root{
  --navy:#16233F;
  --navy-deep:#0E1830;
  --yellow:#FFC72C;
  --yellow-dark:#E5AE12;
  --strip:#F4F6FA;
  --white:#FFFFFF;
  --slate:#33415C;
  --slate-light:#6B7A99;
  --border:#E3E8F0;
  --success:#1E8E5A;
  --shadow: 0 10px 30px rgba(14,24,48,0.08);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Source Sans 3', Arial, sans-serif;
  color:var(--slate);
  background:var(--white);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:'Fraunces', Georgia, serif;
  color:var(--navy);
  margin:0 0 16px;
  line-height:1.2;
}
h1{font-size:2.6rem;font-weight:700;}
h2{font-size:2rem;font-weight:600;}
h3{font-size:1.35rem;font-weight:600;}
p{margin:0 0 16px;}
a{color:var(--navy);}
img{max-width:100%;display:block;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
.eyebrow{
  text-transform:uppercase;
  letter-spacing:.14em;
  font-size:.78rem;
  font-weight:700;
  color:var(--yellow-dark);
  margin-bottom:10px;
  display:inline-block;
}

/* ---------------- Header / Nav ---------------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;max-width:1180px;margin:0 auto;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
.brand-mark{
  width:38px;height:38px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%, #fff6d8, var(--yellow) 60%, var(--yellow-dark));
  box-shadow:0 0 0 3px rgba(255,199,44,0.18);
  position:relative;
  animation: glow 2.6s ease-in-out infinite;
}
@keyframes glow{
  0%,100%{box-shadow:0 0 0 3px rgba(255,199,44,0.18);}
  50%{box-shadow:0 0 0 8px rgba(255,199,44,0.28);}
}
.brand-name{font-family:'Fraunces',serif;font-weight:700;font-size:1.3rem;color:var(--navy);}
.brand-name span{color:var(--yellow-dark);}

.main-nav ul{display:flex;gap:28px;list-style:none;margin:0;padding:0;}
.main-nav a{
  text-decoration:none;color:var(--navy);font-weight:600;font-size:.95rem;
  position:relative;padding:4px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;
  background:var(--yellow-dark);transition:width .25s ease;
}
.main-nav a:hover::after{width:100%;}
.nav-toggle{display:none;background:none;border:none;font-size:1.6rem;color:var(--navy);cursor:pointer;}

@media(max-width:860px){
  .main-nav{
    position:absolute;top:100%;left:0;right:0;background:var(--white);
    border-bottom:1px solid var(--border);
    max-height:0;overflow:hidden;transition:max-height .3s ease;
  }
  .main-nav.open{max-height:400px;}
  .main-nav ul{flex-direction:column;gap:0;padding:8px 24px 16px;}
  .main-nav li{border-top:1px solid var(--border);}
  .main-nav a{display:block;padding:12px 0;}
  .nav-toggle{display:block;}
}

/* ---------------- Buttons ---------------- */
.btn-official{
  display:inline-block;background:var(--yellow);color:var(--navy-deep);
  font-weight:700;text-decoration:none;padding:16px 34px;border-radius:6px;
  font-size:1.02rem;letter-spacing:.02em;
  box-shadow:var(--shadow);
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease;
  border:2px solid var(--yellow-dark);
}
.btn-official:hover{
  transform:translateY(-3px);
  background:var(--yellow-dark);
  box-shadow:0 16px 34px rgba(14,24,48,0.16);
}
.btn-wrap{text-align:center;margin:34px 0 10px;}
.btn-note{display:block;margin-top:10px;font-size:.85rem;color:var(--slate-light);}

/* ---------------- Hero ---------------- */
.hero{
  background:linear-gradient(180deg,var(--strip) 0%, var(--white) 100%);
  padding:64px 0 40px;
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;}}
.hero-copy p.lead{font-size:1.15rem;color:var(--slate);}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;}
.trust-item{display:flex;align-items:center;gap:10px;font-weight:600;color:var(--navy);font-size:.92rem;}
.trust-dot{width:9px;height:9px;border-radius:50%;background:var(--yellow-dark);flex:none;}
.hero-media{
  position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--shadow);
  border:1px solid var(--border);
  animation: floatUp .9s ease both;
}
@keyframes floatUp{from{opacity:0;transform:translateY(18px);}to{opacity:1;transform:translateY(0);}}
.hero-media img{width:100%;height:auto;transition:transform .6s ease;}
.hero-media:hover img{transform:scale(1.04);}

/* ---------------- Strip (colored info band) ---------------- */
.strip{
  background:var(--strip);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  padding:26px 0;
}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;text-align:center;}
@media(max-width:760px){.strip-grid{grid-template-columns:repeat(2,1fr);}}
.strip-item{padding:10px;}
.strip-item .num{display:block;font-family:'Fraunces',serif;font-weight:700;font-size:1.5rem;color:var(--navy);}
.strip-item .lbl{font-size:.85rem;color:var(--slate-light);}

/* ---------------- Sections ---------------- */
section{padding:64px 0;}
.section-alt{background:var(--strip);}
.section-head{max-width:720px;margin:0 auto 40px;text-align:center;}
.section-head p{color:var(--slate-light);}

/* Two column feature */
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
@media(max-width:860px){.feature-grid{grid-template-columns:1fr;}}
.feature-grid.reverse .feature-media{order:2;}
.feature-media{
  border-radius:14px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);
}
.feature-media img{transition:transform .5s ease;}
.feature-media:hover img{transform:scale(1.05);}

/* Cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
@media(max-width:860px){.card-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.card-grid{grid-template-columns:1fr;}}
.card{
  background:var(--white);border:1px solid var(--border);border-radius:12px;
  padding:26px 22px;box-shadow:0 2px 10px rgba(14,24,48,0.04);
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--yellow-dark);}
.card .icon{
  width:44px;height:44px;border-radius:10px;background:var(--strip);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
  font-size:1.3rem;color:var(--yellow-dark);border:1px solid var(--border);
}

/* Comparison table & pricing table & mechanism table */
table.compare, table.price-table, table.mech-table{
  width:100%;border-collapse:collapse;background:var(--white);
  box-shadow:var(--shadow);border-radius:10px;overflow:hidden;
}
table.compare th, table.price-table th, table.mech-table th{
  background:var(--navy);color:var(--white);padding:14px 16px;text-align:left;font-family:'Fraunces',serif;font-weight:600;
}
table.compare td, table.price-table td, table.mech-table td{
  padding:13px 16px;border-bottom:1px solid var(--border);
}
table.compare tr:nth-child(even) td, table.price-table tr:nth-child(even) td, table.mech-table tr:nth-child(even) td{background:var(--strip);}
table.compare .yes{color:var(--success);font-weight:700;}
table.compare .no{color:#B23A3A;font-weight:700;}
.table-wrap{overflow-x:auto;}

/* Pricing cards */
.pricing-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
@media(max-width:960px){.pricing-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.pricing-grid{grid-template-columns:1fr;}}
.price-card{
  background:var(--white);border:2px solid var(--border);border-radius:14px;
  padding:24px 18px;text-align:center;position:relative;transition:.25s ease;
}
.price-card:hover{border-color:var(--yellow-dark);transform:translateY(-6px);box-shadow:var(--shadow);}
.price-card.popular{border-color:var(--yellow-dark);}
.price-card .badge{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--yellow);color:var(--navy-deep);font-size:.72rem;font-weight:700;
  padding:5px 14px;border-radius:999px;letter-spacing:.04em;
}
.price-card .old{color:var(--slate-light);text-decoration:line-through;font-size:.95rem;}
.price-card .new{font-family:'Fraunces',serif;font-size:1.9rem;color:var(--navy);font-weight:700;}
.price-card .save{color:var(--success);font-weight:700;font-size:.85rem;margin-bottom:14px;}

/* Pros and Cons */
.pc-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;}
@media(max-width:760px){.pc-grid{grid-template-columns:1fr;}}
.pc-card{border-radius:12px;padding:26px;border:1px solid var(--border);}
.pc-card.pros{background:#F1FAF5;}
.pc-card.cons{background:#FBF3F0;}
.pc-card h3{display:flex;align-items:center;gap:10px;}
.pc-card ul{margin:0;padding-left:20px;}
.pc-card li{margin-bottom:10px;}

/* Reviews summary */
.review-summary{
  background:var(--white);border:1px solid var(--border);border-radius:16px;
  padding:38px;box-shadow:var(--shadow);
}
.review-score{display:flex;align-items:center;gap:26px;flex-wrap:wrap;margin-bottom:26px;}
.review-score .big{font-family:'Fraunces',serif;font-size:3.2rem;color:var(--navy);font-weight:700;}
.stars{color:var(--yellow-dark);font-size:1.3rem;letter-spacing:2px;}
.bar-row{display:flex;align-items:center;gap:10px;margin-bottom:8px;font-size:.85rem;}
.bar-track{flex:1;height:8px;background:var(--strip);border-radius:6px;overflow:hidden;}
.bar-fill{height:100%;background:var(--yellow-dark);border-radius:6px;}
.theme-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.theme-tag{
  background:var(--strip);border:1px solid var(--border);border-radius:999px;
  padding:7px 16px;font-size:.85rem;font-weight:600;color:var(--navy);
}

/* Guarantee */
.guarantee{
  display:flex;gap:28px;align-items:center;background:var(--navy);color:var(--white);
  border-radius:16px;padding:38px;
}
.guarantee .seal{
  flex:none;width:96px;height:96px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%, #fff6d8, var(--yellow) 60%, var(--yellow-dark));
  display:flex;align-items:center;justify-content:center;font-family:'Fraunces',serif;font-weight:700;
  color:var(--navy-deep);text-align:center;font-size:.8rem;line-height:1.1;
  box-shadow:0 0 0 6px rgba(255,199,44,0.18);
}
.guarantee h3{color:var(--white);}
.guarantee p{color:#D7DEEC;margin:0;}
@media(max-width:640px){.guarantee{flex-direction:column;text-align:center;}}

/* FAQ accordion */
.faq-item{border-bottom:1px solid var(--border);}
.faq-q{
  width:100%;text-align:left;background:none;border:none;padding:20px 0;
  font-family:'Fraunces',serif;font-size:1.08rem;font-weight:600;color:var(--navy);
  display:flex;justify-content:space-between;align-items:center;cursor:pointer;gap:16px;
}
.faq-q .plus{transition:transform .25s ease;color:var(--yellow-dark);font-size:1.4rem;flex:none;}
.faq-item.open .faq-q .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding-bottom:18px;color:var(--slate);}

/* Care / checklist */
.care-list{list-style:none;margin:0;padding:0;}
.care-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--border);
}
.care-list .mark{
  flex:none;width:28px;height:28px;border-radius:50%;background:var(--strip);
  border:1px solid var(--border);display:flex;align-items:center;justify-content:center;
  color:var(--yellow-dark);font-weight:700;
}

/* Footer */
.site-footer{background:var(--navy-deep);color:#B9C3D9;padding:50px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:34px;}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr 1fr;}}
.site-footer h4{color:var(--white);font-size:1rem;margin-bottom:14px;}
.site-footer a{color:#B9C3D9;text-decoration:none;font-size:.92rem;}
.site-footer a:hover{color:var(--yellow);}
.site-footer ul{list-style:none;margin:0;padding:0;}
.site-footer li{margin-bottom:10px;}
.fda-box{
  border-top:1px solid rgba(255,255,255,0.12);padding-top:26px;font-size:.82rem;color:#8C99B8;
  line-height:1.7;
}

/* Educational page styles */
.article-hero{background:var(--strip);padding:52px 0 36px;}
.article-body{max-width:820px;margin:0 auto;padding:48px 24px;}
.article-body h2{margin-top:38px;}
.article-body h3{margin-top:26px;}
.article-body ul{padding-left:22px;}
.article-body li{margin-bottom:8px;}
.breadcrumb{font-size:.85rem;color:var(--slate-light);margin-bottom:14px;}
.breadcrumb a{color:var(--slate-light);text-decoration:none;}
.breadcrumb a:hover{color:var(--navy);}
.callout{
  background:var(--strip);border-left:4px solid var(--yellow-dark);
  padding:18px 22px;border-radius:6px;margin:26px 0;
}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:16px;}
@media(max-width:760px){.related-grid{grid-template-columns:1fr;}}
.related-card{
  border:1px solid var(--border);border-radius:12px;padding:20px;text-decoration:none;
  display:block;transition:.25s ease;
}
.related-card:hover{border-color:var(--yellow-dark);transform:translateY(-4px);box-shadow:var(--shadow);}
.related-card h4{color:var(--navy);margin-bottom:6px;font-family:'Fraunces',serif;}
.related-card span{color:var(--yellow-dark);font-weight:600;font-size:.85rem;}

/* Legal pages */
.legal-body{max-width:820px;margin:0 auto;padding:48px 24px;}
.legal-body h2{margin-top:34px;}
.legal-updated{color:var(--slate-light);font-size:.9rem;}

/* Reveal on scroll */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

/* Back to top */
.to-top{
  position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;
  background:var(--navy);color:var(--white);border:none;font-size:1.2rem;cursor:pointer;
  box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.3s ease;z-index:90;
}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{background:var(--yellow-dark);color:var(--navy-deep);}