/* ============================================================
   AMPJJOINT-10.COM — style.css
   Design language: "Kinetic Motion" — flowing motion-trail
   curves and pulse-line dividers, evoking joints in movement
   rather than static measurement. Cool navy + vivid coral/teal
   on crisp cloud-white, sans-serif throughout.
   Token prefix: --kj-
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700;800&family=Inter:wght@400;500;600;700;800&family=Space+Mono:wght@400;700&display=swap');

:root{
  --kj-navy:      #0F1B2E;
  --kj-navy-2:    #16263D;
  --kj-navy-3:    #1E3252;
  --kj-navy-pal:  #E9EDF5;
  --kj-cloud:     #F4F6F9;
  --kj-cloud-2:   #E8ECF2;
  --kj-white:     #FFFFFF;
  --kj-coral:     #FF6B4A;
  --kj-coral-lt:  #FF8A6E;
  --kj-coral-pal: #FFE4DB;
  --kj-teal:      #00B3A4;
  --kj-teal-pal:  #D8F5F2;
  --kj-amber:     #FFB020;
  --kj-amber-pal: #FFF1D6;
  --kj-ink:       #101418;
  --kj-slate:     #4A5568;
  --kj-faint:     #8892A0;
  --kj-line:      #DCE2EA;

  --f-display: 'Sora', -apple-system, sans-serif;
  --f-body: 'Inter', -apple-system, sans-serif;
  --f-mono: 'Space Mono', 'Courier New', monospace;

  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 24px;
  --sh-1: 0 2px 8px rgba(15,27,46,.06);
  --sh-2: 0 12px 32px rgba(15,27,46,.12);
  --sh-3: 0 26px 64px rgba(15,27,46,.20);
  --ease: cubic-bezier(.22,.85,.32,1);
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0; font-family: var(--f-body); color: var(--kj-ink); background: var(--kj-white);
  -webkit-font-smoothing: antialiased; line-height: 1.6;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family: var(--f-display); font-weight:700; margin:0; color: var(--kj-navy); line-height:1.16; letter-spacing:-.01em; }
p{ margin:0; }
.eyebrow{ font-family: var(--f-mono); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; color: var(--kj-coral); font-weight:700; }
.container{ max-width: 1240px; margin:0 auto; padding: 0 30px; }
section{ position:relative; }
:focus-visible{ outline: 2.5px solid var(--kj-coral); outline-offset:3px; border-radius:4px; }

/* -------------------- BUTTONS -------------------- */
.btn{ display:inline-flex; align-items:center; justify-content:center; gap:.5em; font-family: var(--f-body); font-weight:700; font-size:1rem; padding:15px 30px; border-radius:999px; cursor:pointer; border:none; transition: transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease); white-space:nowrap; }
.btn-primary{ background: var(--kj-coral); color:#fff; box-shadow: var(--sh-2); }
.btn-primary:hover{ background: var(--kj-coral-lt); transform: translateY(-2px); box-shadow: var(--sh-3); }
.btn-ghost{ background: transparent; color: var(--kj-navy); border: 1.5px solid var(--kj-navy); }
.btn-ghost:hover{ background: var(--kj-navy); color:#fff; }
.btn-block{ width:100%; }
.btn-sm{ padding:11px 20px; font-size:.9rem; }

/* -------------------- MOTION TRAIL MOTIF -------------------- */
.pulse-divider{ display:flex; justify-content:center; padding:6px 0; opacity:.8; }
.pulse-divider svg{ width:140px; height:26px; }

/* -------------------- NAV -------------------- */
nav{ position:sticky; top:0; z-index:100; background: rgba(255,255,255,.9); backdrop-filter: blur(10px); border-bottom:1px solid var(--kj-line); }
.nav-inner{ max-width:1240px; margin:0 auto; padding:16px 30px; display:flex; align-items:center; justify-content:space-between; }
.nav-logo{ display:flex; align-items:baseline; gap:2px; font-family: var(--f-display); font-weight:800; font-size:1.3rem; color: var(--kj-navy); }
.nav-logo .lg-mark{ color: var(--kj-coral); }
.nav-logo .lg-num{ font-family: var(--f-mono); font-size:.66rem; font-weight:700; background: var(--kj-navy); color:#fff; border-radius:5px; padding:2px 6px; margin-left:6px; }
.nav-links{ display:flex; align-items:center; gap:32px; }
.nav-links a:not(.nav-cta){ font-size:.94rem; font-weight:600; color: var(--kj-navy-3); position:relative; padding:4px 0; }
.nav-links a:not(.nav-cta)::after{ content:""; position:absolute; left:0; bottom:-2px; width:0; height:2px; background: var(--kj-coral); transition: width .25s var(--ease); }
.nav-links a:not(.nav-cta):hover::after{ width:100%; }
.nav-cta{ background: var(--kj-navy); color:#fff; padding:10px 22px; border-radius:999px; font-weight:700; font-size:.88rem; transition: background .2s; }
.nav-cta:hover{ background: var(--kj-coral); }
.hamburger{ display:none; background:none; border:none; cursor:pointer; padding:6px; }
.hamburger span{ display:block; width:24px; height:2px; background: var(--kj-navy); margin:5px 0; }
.mobile-menu{ position:fixed; inset:0 0 0 auto; width:78%; max-width:340px; background:#fff; box-shadow: var(--sh-3); transform: translateX(100%); transition: transform .32s var(--ease); z-index:200; padding:90px 30px; }
.mobile-menu.open{ transform: translateX(0); }
.mobile-menu a{ display:block; padding:14px 0; font-size:1.1rem; font-weight:600; color: var(--kj-navy); border-bottom:1px solid var(--kj-line); }
.menu-scrim{ position:fixed; inset:0; background: rgba(15,27,46,.4); opacity:0; pointer-events:none; transition: opacity .3s; z-index:150; }
.menu-scrim.open{ opacity:1; pointer-events:all; }

/* -------------------- HERO -------------------- */
.hero{ padding: 84px 0 56px; overflow:hidden; background: linear-gradient(180deg, var(--kj-cloud) 0%, var(--kj-white) 100%); }
.hero-grid{ display:grid; grid-template-columns: 1.05fr .95fr; gap:56px; align-items:center; }
.hero-copy{ position:relative; }
.hero-trail{ position:absolute; top:-40px; left:-70px; width:480px; height:340px; opacity:.7; z-index:0; pointer-events:none; }
.hero-eyebrow{ display:flex; align-items:center; gap:10px; margin-bottom:18px; }
.hero-eyebrow .dot{ width:6px; height:6px; border-radius:50%; background: var(--kj-coral); }
.hero-h1{ font-size: clamp(2.3rem,3.6vw,3.3rem); position:relative; z-index:1; }
.hero-h1 .hl{ color: var(--kj-coral); }
.hero-sub{ margin-top:20px; font-size:1.1rem; color: var(--kj-slate); max-width:480px; position:relative; z-index:1; }
.hero-cta-row{ display:flex; align-items:center; gap:22px; margin-top:32px; flex-wrap:wrap; }
.hero-guarantee-tag{ font-family: var(--f-mono); font-size:.76rem; color: var(--kj-navy-3); display:flex; align-items:center; gap:8px; }
.hero-stats{ display:flex; gap:34px; margin-top:44px; padding-top:26px; border-top:1px solid var(--kj-line); }
.hero-stat b{ display:block; font-family: var(--f-display); font-size:1.55rem; color: var(--kj-navy); }
.hero-stat span{ font-size:.8rem; color: var(--kj-faint); }
.hero-visual{ position:relative; }
.hero-visual-card{ background: linear-gradient(155deg, var(--kj-navy) 0%, var(--kj-navy-2) 100%); border-radius: var(--r-lg); padding:40px; position:relative; box-shadow: var(--sh-3); }
.hero-visual-card img{ border-radius: var(--r-md); }
.hero-visual-badge{ position:absolute; bottom:-22px; left:-22px; background:#fff; border-radius: var(--r-md); padding:16px 20px; box-shadow: var(--sh-2); display:flex; align-items:center; gap:12px; }
.hero-visual-badge svg{ width:34px; height:34px; flex-shrink:0; }
.hero-visual-badge b{ display:block; font-size:.86rem; color: var(--kj-navy); }
.hero-visual-badge span{ font-size:.74rem; color: var(--kj-faint); }
.hero-visual-tag{ position:absolute; top:26px; right:-16px; background: var(--kj-coral); color:#fff; font-family: var(--f-mono); font-size:.7rem; font-weight:700; padding:8px 14px; border-radius:999px; box-shadow: var(--sh-2); transform: rotate(4deg); }

/* -------------------- TRUST STRIP -------------------- */
.trust-strip{ background: var(--kj-navy); padding:22px 0; }
.trust-inner{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:18px; }
.trust-item{ display:flex; align-items:center; gap:10px; color: var(--kj-cloud); font-size:.85rem; font-weight:600; }
.trust-item svg{ width:20px; height:20px; color: var(--kj-teal); flex-shrink:0; }

/* -------------------- SECTION HEADERS -------------------- */
.sec-head{ text-align:center; max-width:700px; margin:0 auto 52px; }
.sec-head .eyebrow{ display:block; margin-bottom:14px; }
.sec-head h2{ font-size: clamp(1.7rem,2.6vw,2.3rem); }
.sec-head p{ margin-top:16px; color: var(--kj-slate); font-size:1.02rem; }
.band{ padding:100px 0; }
.band-alt{ background: var(--kj-cloud); }

/* -------------------- BENEFITS -------------------- */
.benefits-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:26px; }
.benefit-card{ background:#fff; border:1px solid var(--kj-line); border-radius: var(--r-lg); padding:34px 28px; transition: transform .25s var(--ease), box-shadow .25s var(--ease); }
.benefit-card:hover{ transform: translateY(-5px); box-shadow: var(--sh-2); }
.benefit-num{ font-family: var(--f-mono); font-size:.78rem; font-weight:700; color: var(--kj-coral); background: var(--kj-coral-pal); display:inline-block; padding:5px 11px; border-radius:999px; margin-bottom:18px; }
.benefit-card h3{ font-size:1.2rem; margin-bottom:10px; }
.benefit-card p{ color: var(--kj-slate); font-size:.95rem; }

/* -------------------- INGREDIENTS -------------------- */
.ing-grid{ display:grid; grid-template-columns: repeat(5,1fr); gap:18px; }
.ing-card{ background:#fff; border-radius: var(--r-md); padding:22px 18px; border:1px solid var(--kj-line); text-align:center; }
.ing-deg{ font-family: var(--f-mono); font-size:.7rem; color: var(--kj-teal); font-weight:700; margin-bottom:10px; }
.ing-name{ font-family: var(--f-display); font-weight:700; font-size:1rem; color: var(--kj-navy); margin-bottom:8px; }
.ing-desc{ font-size:.83rem; color: var(--kj-slate); }
.ing-note{ text-align:center; margin-top:34px; color: var(--kj-faint); font-size:.86rem; font-family: var(--f-mono); }

/* -------------------- HOW IT WORKS -------------------- */
.how-wrap{ display:grid; grid-template-columns: .9fr 1.1fr; gap:60px; align-items:center; }
.how-steps{ display:flex; flex-direction:column; gap:30px; }
.how-step{ display:flex; gap:20px; }
.how-num{ width:46px; height:46px; flex-shrink:0; border-radius:50%; background: var(--kj-navy-pal); color: var(--kj-navy); font-family: var(--f-display); font-weight:800; font-size:1.1rem; display:flex; align-items:center; justify-content:center; }
.how-step h3{ font-size:1.06rem; margin-bottom:6px; }
.how-step p{ color: var(--kj-slate); font-size:.94rem; }
.how-visual{ background: var(--kj-navy-pal); border-radius: var(--r-lg); padding:40px; }
.how-visual img{ border-radius: var(--r-md); box-shadow: var(--sh-2); }

/* -------------------- PRICING (price-band / image only — no cards) -------------------- */

/* -------------------- REVIEWS -------------------- */
.rev-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:24px; }
.rev-card{ background:#fff; border-radius: var(--r-lg); overflow:hidden; border:1px solid var(--kj-line); }
.rev-photo{ aspect-ratio:16/10; background: var(--kj-cloud-2); overflow:hidden; }
.rev-photo img{ width:100%; height:100%; object-fit:cover; }
.rev-body{ padding:24px 24px 28px; }
.rev-stars{ display:flex; gap:4px; margin-bottom:14px; }
.rev-stars svg{ width:16px; height:16px; color: var(--kj-amber); }
.rev-quote{ font-family: var(--f-display); font-weight:500; font-size:1.02rem; color: var(--kj-ink); margin-bottom:16px; }
.rev-meta{ font-family: var(--f-mono); font-size:.76rem; color: var(--kj-faint); }
.rev-meta b{ color: var(--kj-navy-3); }
.rev-disclaimer{ text-align:center; margin-top:30px; font-size:.8rem; color: var(--kj-faint); max-width:560px; margin-left:auto; margin-right:auto; }

/* -------------------- GUARANTEE -------------------- */
.guar-band{ background: var(--kj-navy); color: var(--kj-cloud); }
.guar-wrap{ display:grid; grid-template-columns: .95fr 1.05fr; gap:56px; align-items:center; }
.guar-badge{ width:60px; height:60px; margin-bottom:22px; border-radius:50%; background: var(--kj-coral); display:flex; align-items:center; justify-content:center; }
.guar-badge svg{ width:30px; height:30px; color:#fff; }
.guar-wrap h2{ color:#fff; font-size: clamp(1.7rem,2.6vw,2.3rem); margin-bottom:18px; }
.guar-wrap p{ color: var(--kj-cloud-2); font-size:1.02rem; margin-bottom:14px; max-width:480px; }
.guar-visual{ border-radius: var(--r-lg); overflow:hidden; box-shadow: var(--sh-3); }
.guar-visual img{ width:100%; height:100%; object-fit:cover; }

/* -------------------- SECOND PRICE CTA BAND -------------------- */
.price-band{ background: var(--kj-navy); padding:56px 0 6px; text-align:center; }
.pb-inner{ max-width:760px; margin:0 auto; }
.pb-inner h2{ color:#fff; font-size: clamp(1.5rem,2.4vw,2rem); margin-bottom:12px; }
.pb-inner p{ font-family: var(--f-mono); font-size:.84rem; color: var(--kj-amber); }
.price-sec{ background: var(--kj-navy); padding:34px 0 72px; text-align:center; }
.price-link{ display:block; max-width:900px; margin:0 auto; border-radius: var(--r-md); overflow:hidden; }
.price-img-lg{ width:100%; height:auto; display:block; border-radius: var(--r-md); transition: transform .3s var(--ease); }
.price-link:hover .price-img-lg{ transform: scale(1.015); }

/* -------------------- FAQ -------------------- */
.faq-list{ max-width:780px; margin:0 auto; display:flex; flex-direction:column; gap:14px; }
.faq-item{ background:#fff; border:1px solid var(--kj-line); border-radius: var(--r-md); overflow:hidden; }
.faq-q{ width:100%; text-align:left; background:none; border:none; cursor:pointer; padding:22px 26px; display:flex; align-items:center; justify-content:space-between; gap:16px; font-family: var(--f-display); font-weight:700; font-size:1.02rem; color: var(--kj-navy); }
.faq-q .plus{ width:22px; height:22px; flex-shrink:0; position:relative; }
.faq-q .plus::before, .faq-q .plus::after{ content:""; position:absolute; background: var(--kj-coral); border-radius:2px; transition: transform .3s var(--ease); }
.faq-q .plus::before{ top:50%; left:0; width:100%; height:2px; margin-top:-1px; }
.faq-q .plus::after{ left:50%; top:0; height:100%; width:2px; margin-left:-1px; }
.faq-item.open .plus::after{ transform: rotate(90deg); opacity:0; }
.faq-ans{ max-height:0; overflow:hidden; transition: max-height .35s var(--ease); }
.faq-ans p{ padding:0 26px 24px; color: var(--kj-slate); font-size:.95rem; }

/* -------------------- FINAL CTA -------------------- */
.cta-final{ background: #060B12; padding:120px 0; text-align:center; position:relative; overflow:hidden; border-top:1px solid rgba(255,107,74,.2); }
.cta-final::before{ content:""; position:absolute; inset:0; background: radial-gradient(circle at 50% 0%, rgba(255,107,74,.16), transparent 60%); }
.cta-final-inner{ position:relative; z-index:1; max-width:640px; margin:0 auto; }
.cta-final h2{ color:#fff; font-size: clamp(1.9rem,3.4vw,2.7rem); margin-bottom:18px; }
.cta-final h2 .hl{ color: var(--kj-coral-lt); }
.cta-final-img{ width:150px; height:150px; object-fit:cover; border-radius:50%; margin:30px auto; border:3px solid var(--kj-coral); box-shadow: var(--sh-3); display:block; }
.cta-final p{ color: var(--kj-cloud-2); font-size:1.06rem; margin-bottom:34px; }

/* -------------------- FOOTER -------------------- */
footer{ background: var(--kj-navy-2); color: var(--kj-cloud-2); padding:56px 0 26px; border-top:1px solid rgba(255,107,74,.3); }
.foot-grid{ display:grid; grid-template-columns: 1.4fr 1fr 1fr; gap:40px; margin-bottom:40px; }
.foot-logo{ font-family: var(--f-display); font-weight:800; font-size:1.3rem; color:#fff; margin-bottom:14px; }
.foot-desc{ font-size:.88rem; color: var(--kj-faint); max-width:320px; }
.foot-col h4{ font-family: var(--f-mono); font-size:.72rem; letter-spacing:.08em; text-transform:uppercase; color: var(--kj-amber); margin-bottom:16px; }
.foot-col a{ display:block; font-size:.88rem; color: var(--kj-cloud-2); margin-bottom:11px; opacity:.85; }
.foot-col a:hover{ opacity:1; text-decoration:underline; }
.foot-bottom{ border-top:1px solid rgba(255,255,255,.1); padding-top:24px; font-size:.78rem; color: var(--kj-faint); line-height:1.7; }
.foot-bottom p{ margin-bottom:12px; }

/* -------------------- REVEAL ANIM -------------------- */
body.js .fade-up{ opacity:0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
body.js .fade-up.in{ opacity:1; transform:none; }

/* -------------------- RESPONSIVE -------------------- */
@media (max-width:980px){
  .hero-grid, .how-wrap, .guar-wrap{ grid-template-columns:1fr; }
  .benefits-grid, .rev-grid{ grid-template-columns: repeat(2,1fr); }
  .ing-grid{ grid-template-columns: repeat(3,1fr); }
  .foot-grid{ grid-template-columns: 1fr 1fr; }
  .price-band{ padding:46px 0 6px; }
  .price-sec{ padding:26px 0 56px; }
  .price-card.featured{ transform:none; order:-1; }
  .price-card.featured:hover{ transform: translateY(-4px); }
}
@media (max-width:720px){
  .nav-links{ position:fixed; inset:0; display:none; }
  .hamburger{ display:block; }
  .band{ padding:64px 0; }
  .hero{ padding:44px 0 32px; }
  .benefits-grid, .rev-grid, .ing-grid{ grid-template-columns:1fr; }
  .hero-stats{ flex-wrap:wrap; gap:24px; }
  .trust-inner{ justify-content:center; text-align:center; }
  .foot-grid{ grid-template-columns:1fr; gap:30px; }
  .hero-visual-tag{ right:6px; }
  .hero-visual-badge{ left:6px; bottom:-16px; }
}