/* ============================================================
   Renu — styles
   Brand: deep slate + emerald "renewal" green + crisp white
   ============================================================ */

:root {
  --ink: #0c1512;
  --slate: #11201a;
  --paper: #ffffff;
  --mist: #f2f7f4;
  --accent: #16c47f;
  --accent-deep: #0e9b62;
  --accent-soft: #e7f9f0;
  --text: #14241d;
  --muted: #5d6f66;
  --line: #e2eae5;
  --line-dark: rgba(255,255,255,.12);
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 10px 40px rgba(12,21,18,.08);
  --shadow-lg: 0 24px 70px rgba(12,21,18,.16);
  --maxw: 1160px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .brand-word, .stat-num {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

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

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 760px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 15px;
  padding: 13px 22px; border-radius: 999px; border: 1.5px solid transparent;
  cursor: pointer; transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s, color .2s;
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #06231a; box-shadow: 0 8px 24px rgba(22,196,127,.35); }
.btn-primary:hover { background: var(--accent-deep); color: #fff; transform: translateY(-2px); box-shadow: 0 12px 32px rgba(22,196,127,.45); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-deep); transform: translateY(-2px); }
.btn-lg { padding: 16px 30px; font-size: 16px; }
.btn-sm { padding: 10px 18px; font-size: 14px; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.8);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s;
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: 0 4px 24px rgba(12,21,18,.05); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }

.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--text); }
.brand-mark { width: 28px; height: 28px; color: var(--accent); flex: none; }
.brand-word { font-size: 24px; letter-spacing: -0.04em; }

.nav { display: flex; gap: 30px; }
.nav a { font-size: 15px; font-weight: 500; color: var(--muted); transition: color .2s; }
.nav a:hover { color: var(--accent-deep); }

.header-cta { display: flex; align-items: center; gap: 18px; }
.phone-link { display: inline-flex; align-items: center; gap: 7px; font-weight: 600; font-size: 14px; color: var(--text); }
.phone-link:hover { color: var(--accent-deep); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none; flex-direction: column; gap: 4px; padding: 8px 24px 24px;
  background: rgba(255,255,255,.98); border-bottom: 1px solid var(--line);
}
.mobile-nav.open { display: flex; }
.mobile-nav a { padding: 12px 0; font-weight: 500; color: var(--text); border-bottom: 1px solid var(--line); }
.mobile-nav .btn { margin-top: 12px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    linear-gradient(180deg, rgba(8,18,14,.78) 0%, rgba(8,18,14,.55) 45%, rgba(8,18,14,.85) 100%),
    url('img/hero-home.jpg') center 38% / cover no-repeat;
  padding: 120px 0 96px;
}
.hero-glow {
  position: absolute; top: -20%; right: -10%; width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(22,196,127,.35), transparent 65%);
  filter: blur(20px); pointer-events: none;
}
.hero-inner { position: relative; max-width: 820px; }
.eyebrow {
  font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 13px;
  letter-spacing: .16em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 18px;
}
.hero-title { font-size: clamp(40px, 7vw, 74px); margin-bottom: 22px; }
.hero-title .accent { color: var(--accent); }
.hero-sub { font-size: clamp(17px, 2.2vw, 21px); color: rgba(255,255,255,.85); max-width: 600px; margin-bottom: 34px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 56px; }
.hero .btn-ghost { color: #fff; border-color: rgba(255,255,255,.4); }
.hero .btn-ghost:hover { border-color: #fff; color: #fff; background: rgba(255,255,255,.08); }

.hero-stats { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; }
.stat-num { font-size: 28px; color: #fff; }
.stat-label { font-size: 13px; color: rgba(255,255,255,.7); }
.stat-divider { width: 1px; height: 38px; background: rgba(255,255,255,.2); }

/* ---------- Trust bar ---------- */
.trustbar { background: var(--ink); color: rgba(255,255,255,.9); }
.trustbar-inner { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px 40px; padding: 18px 24px; }
.trust-item { font-size: 14px; font-weight: 500; }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section-dark { background: var(--slate); color: #fff; }
.section-mist { background: var(--mist); }
.section-head { max-width: 680px; margin: 0 auto 56px; text-align: center; }
.section-head h2 { font-size: clamp(30px, 4.5vw, 44px); margin-bottom: 16px; }
.section-lede { font-size: 18px; color: var(--muted); }
.section-dark .section-lede { color: rgba(255,255,255,.75); }

/* ---------- Cards (problem) ---------- */
.cards-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 34px 30px; transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card-icon {
  width: 56px; height: 56px; display: grid; place-items: center; font-size: 26px;
  background: var(--accent-soft); border-radius: 14px; margin-bottom: 20px;
}
.card h3 { font-size: 21px; margin-bottom: 10px; }
.card p { color: var(--muted); }

/* ---------- Science ---------- */
.science-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.science-copy .eyebrow { margin-bottom: 16px; }
.science-copy h2 { font-size: clamp(28px, 4vw, 42px); margin-bottom: 16px; }
.feature-list { list-style: none; margin-top: 30px; display: flex; flex-direction: column; gap: 22px; }
.feature-list li { display: flex; gap: 16px; align-items: flex-start; }
.feature-tag {
  flex: none; font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 12px;
  letter-spacing: .04em; text-transform: uppercase; color: var(--accent);
  background: rgba(22,196,127,.14); padding: 7px 12px; border-radius: 8px; margin-top: 2px;
}
.feature-list strong { display: block; color: #fff; }
.feature-list div { color: rgba(255,255,255,.78); }

.visual-card { background: rgba(255,255,255,.06); border: 1px solid var(--line-dark); border-radius: var(--radius-lg); padding: 32px; }
.visual-row { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.visual-row span { width: 90px; flex: none; font-size: 14px; color: rgba(255,255,255,.7); }
.bar { height: 16px; border-radius: 999px; flex: 1; }
.bar-worn { background: linear-gradient(90deg, #b45c3a 30%, rgba(180,92,58,.2) 30%); }
.bar-renu { background: linear-gradient(90deg, var(--accent) 92%, rgba(22,196,127,.2) 92%); }
.visual-note { font-size: 14px; color: rgba(255,255,255,.6); margin-top: 6px; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.step { position: relative; padding: 36px 28px; border-radius: var(--radius-lg); background: var(--mist); }
.step-num {
  width: 46px; height: 46px; display: grid; place-items: center; border-radius: 50%;
  background: var(--accent); color: #06231a; font-family: 'Space Grotesk',sans-serif;
  font-weight: 700; font-size: 20px; margin-bottom: 20px;
}
.step h3 { font-size: 21px; margin-bottom: 10px; }
.step p { color: var(--muted); }

/* ---------- Benefits ---------- */
.benefits { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px 40px; }
.benefit { display: flex; gap: 16px; align-items: flex-start; }
.benefit-check {
  flex: none; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%;
  background: var(--accent); color: #06231a; font-weight: 700; font-size: 15px; margin-top: 2px;
}
.benefit strong { display: block; font-size: 17px; font-family: 'Space Grotesk',sans-serif; }
.benefit span { color: var(--muted); font-size: 15px; }

/* ---------- Compare ---------- */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 900px; margin: 0 auto; }
.compare-col { border-radius: var(--radius-lg); padding: 36px 32px; }
.compare-replace { background: var(--mist); border: 1px solid var(--line); }
.compare-renu { position: relative; background: var(--slate); color: #fff; box-shadow: var(--shadow-lg); }
.compare-col h3 { font-size: 23px; margin-bottom: 22px; }
.compare-col ul { list-style: none; display: flex; flex-direction: column; gap: 14px; margin-bottom: 28px; }
.compare-col li { position: relative; padding-left: 28px; color: var(--muted); }
.compare-replace li::before { content: "✕"; position: absolute; left: 0; color: #c2553a; font-weight: 700; }
.compare-renu li { color: rgba(255,255,255,.85); }
.compare-renu li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.compare-badge {
  position: absolute; top: -13px; left: 32px; background: var(--accent); color: #06231a;
  font-family: 'Space Grotesk',sans-serif; font-weight: 600; font-size: 12px; letter-spacing: .04em;
  text-transform: uppercase; padding: 6px 14px; border-radius: 999px;
}

/* ---------- FAQ ---------- */
.faq { display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 4px 24px; transition: border-color .2s; }
.faq-item[open] { border-color: var(--accent); }
.faq-item summary {
  list-style: none; cursor: pointer; padding: 20px 0; font-family: 'Space Grotesk',sans-serif;
  font-weight: 600; font-size: 18px; display: flex; justify-content: space-between; align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 26px; color: var(--accent); transition: transform .3s var(--ease); line-height: 1; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { color: var(--muted); padding: 0 0 22px; }

/* ---------- CTA / Form ---------- */
.cta-section { background: var(--ink); }
.cta-head { text-align: center; margin-bottom: 40px; }
.cta-head h2 { font-size: clamp(30px,4.5vw,44px); margin-bottom: 14px; }
.cta-head p { color: rgba(255,255,255,.75); font-size: 18px; }

.lead-form {
  background: rgba(255,255,255,.05); border: 1px solid var(--line-dark);
  border-radius: var(--radius-lg); padding: 36px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field label { font-size: 14px; font-weight: 500; color: rgba(255,255,255,.85); }
.field .optional { color: rgba(255,255,255,.5); font-weight: 400; }
.field input, .field textarea {
  font-family: inherit; font-size: 15px; color: #fff;
  background: rgba(255,255,255,.06); border: 1.5px solid var(--line-dark); border-radius: 12px;
  padding: 13px 15px; transition: border-color .2s, background .2s;
}
.field input::placeholder, .field textarea::placeholder { color: rgba(255,255,255,.4); }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); background: rgba(255,255,255,.1); }
.field input.invalid, .field textarea.invalid { border-color: #e0664a; }
.lead-form .btn { margin-top: 6px; }
.form-fineprint { text-align: center; font-size: 13px; color: rgba(255,255,255,.5); margin-top: 16px; }
.form-success { text-align: center; color: var(--accent); font-weight: 600; margin-top: 18px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: rgba(255,255,255,.7); padding: 64px 0 28px; }
.footer-inner { display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap; padding-bottom: 40px; border-bottom: 1px solid var(--line-dark); }
.footer-brand { max-width: 320px; }
.brand-footer { color: #fff; margin-bottom: 14px; }
.footer-brand p { font-size: 15px; }
.footer-cols { display: flex; gap: 64px; flex-wrap: wrap; }
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h4 { color: #fff; font-size: 14px; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 4px; }
.footer-col a { font-size: 15px; color: rgba(255,255,255,.7); transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding-top: 24px; font-size: 13px; color: rgba(255,255,255,.5); }

/* ---------- Section variants added for the sales-process build ---------- */
.section-tight { padding: 80px 0; }
.accent-text { color: var(--accent-deep); }
.section-dark .accent-text { color: var(--accent); }

/* Why now */
.whynow-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; max-width: 920px; margin: 0 auto; }
.whynow { background: var(--mist); border-radius: var(--radius-lg); padding: 34px 30px; }
.whynow-num { font-family: 'Space Grotesk',sans-serif; font-weight: 700; font-size: 15px; color: var(--accent-deep); letter-spacing: .1em; }
.whynow h3 { font-size: 21px; margin: 12px 0 10px; }
.whynow p { color: var(--muted); }
.whynow-foot { text-align: center; max-width: 720px; margin: 36px auto 0; font-size: 19px; color: var(--text); }
.whynow-foot em { color: var(--accent-deep); font-style: normal; font-weight: 600; }

/* Split layouts (problem, how) */
.reveal-split, .how-split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.split-copy h2, .how-copy h2 { font-size: clamp(28px,4.2vw,44px); margin-bottom: 18px; }
.split-copy .section-lede { margin-bottom: 16px; }
.split-visual img, .how-visual img { width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); aspect-ratio: 1/1; object-fit: cover; }

/* Science split + before/after */
.science-split { display: grid; grid-template-columns: .95fr 1.05fr; gap: 56px; align-items: center; }
.beforeafter { margin: 0; }
.ba-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.ba-item { position: relative; border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-lg); }
.ba-item img { width: 100%; aspect-ratio: 1/1; object-fit: cover; display: block; }
.ba-label { position: absolute; left: 12px; bottom: 12px; font-family: 'Space Grotesk',sans-serif; font-weight: 600; font-size: 12px; letter-spacing: .04em; text-transform: uppercase; padding: 6px 12px; border-radius: 999px; color: #fff; }
.ba-before { background: rgba(184,92,58,.92); }
.ba-after { background: var(--accent); color: #06231a; }
.beforeafter figcaption { text-align: center; margin-top: 16px; font-size: 14px; color: rgba(255,255,255,.6); }

/* Certifications / proof */
.cert-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
.cert { text-align: center; padding: 32px 22px; border: 1px solid var(--line); border-radius: var(--radius-lg); transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s; }
.cert:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.cert-icon { width: 56px; height: 56px; display: grid; place-items: center; font-size: 26px; background: var(--accent-soft); border-radius: 14px; margin: 0 auto 18px; }
.cert h3 { font-size: 18px; margin-bottom: 8px; }
.cert p { color: var(--muted); font-size: 15px; }
.cert-foot { text-align: center; max-width: 640px; margin: 36px auto 0; color: var(--muted); font-size: 15px; }

/* How — stacked steps */
.steps-stack { display: flex; flex-direction: column; gap: 24px; margin-top: 28px; }
.step-row { display: flex; gap: 18px; align-items: flex-start; }
.step-row h3 { font-size: 19px; margin-bottom: 6px; }
.step-row p { color: var(--muted); }
.step-row .step-num { margin-bottom: 0; flex: none; }

/* Score meter */
.meter { max-width: 560px; margin: 0 auto 40px; }
.meter-track { display: flex; height: 52px; border-radius: 14px; overflow: hidden; font-family: 'Space Grotesk',sans-serif; font-weight: 600; font-size: 14px; }
.meter-zone { display: grid; place-items: center; color: #fff; }
.meter-replace { flex: 0 0 22%; background: linear-gradient(135deg,#c2553a,#9e4129); }
.meter-renu { flex: 1; background: linear-gradient(135deg,var(--accent),var(--accent-deep)); color: #06231a; }
.meter-scale { display: flex; justify-content: space-between; margin-top: 8px; font-size: 13px; color: rgba(255,255,255,.6); }
.meter-scale span:nth-child(2) { margin-left: 16%; }

/* Form title + select */
.form-title { font-family: 'Space Grotesk',sans-serif; font-size: 22px; color: #fff; margin-bottom: 22px; text-align: center; }
.field select {
  font-family: inherit; font-size: 15px; color: #fff; background: rgba(255,255,255,.06);
  border: 1.5px solid var(--line-dark); border-radius: 12px; padding: 13px 15px; transition: border-color .2s, background .2s;
}
.field select:focus { outline: none; border-color: var(--accent); background: rgba(255,255,255,.1); }
.field select option { color: #14241d; }

/* Final CTA band */
.cta-band { background: var(--slate); }
.cta-band-inner { text-align: center; max-width: 680px; margin: 0 auto; }
.cta-band-inner h2 { color: #fff; font-size: clamp(28px,4.2vw,42px); margin-bottom: 14px; }
.cta-band-inner p { color: rgba(255,255,255,.78); font-size: 18px; margin-bottom: 28px; }

/* Restore step (science) */
.step-chip {
  display: inline-block; font-family: 'Space Grotesk',sans-serif; font-weight: 600; font-size: 12px;
  letter-spacing: .06em; text-transform: uppercase; color: var(--accent);
  background: rgba(22,196,127,.16); padding: 7px 14px; border-radius: 999px; margin-bottom: 18px;
}
.restore-h { font-size: clamp(24px,3vw,32px); color: #fff; margin-bottom: 16px; }
.restore-p { color: rgba(255,255,255,.8); margin-bottom: 14px; }
.restore-p strong { color: #fff; }

/* Protect — four ways */
.protect-rows { display: flex; flex-direction: column; gap: 72px; margin-top: 8px; }
.protect-row { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.protect-row.reverse .protect-visual { order: 2; }
.protect-visual img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.protect-icon {
  width: 56px; height: 56px; display: grid; place-items: center; font-size: 26px;
  background: var(--accent-soft); border-radius: 14px; margin-bottom: 18px;
}
.protect-copy h3 { font-size: clamp(24px,3vw,30px); margin-bottom: 12px; }
.protect-copy p { color: var(--muted); font-size: 17px; margin-bottom: 16px; }
.proof-chip {
  display: inline-block; font-family: 'Space Grotesk',sans-serif; font-weight: 600; font-size: 13px;
  letter-spacing: .02em; color: var(--accent-deep); background: var(--accent-soft);
  padding: 8px 16px; border-radius: 999px;
}
.proof-chip-muted { color: var(--muted); background: var(--mist); }
.wind-note { text-align: center; margin-top: 56px; }

/* Responsive for new sections */
@media (max-width: 900px) {
  .whynow-grid, .reveal-split, .how-split, .science-split { grid-template-columns: 1fr; gap: 32px; }
  .cert-grid { grid-template-columns: 1fr 1fr; }
  .how-visual { order: -1; }
  .protect-row, .protect-row.reverse { grid-template-columns: 1fr; gap: 24px; }
  .protect-row .protect-visual, .protect-row.reverse .protect-visual { order: -1; }
  .protect-rows { gap: 56px; }
}
@media (max-width: 560px) {
  .cert-grid { grid-template-columns: 1fr; }
  .ba-pair { gap: 10px; }
}

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav, .header-cta { display: none; }
  .nav-toggle { display: flex; }
  .cards-3, .steps { grid-template-columns: 1fr; }
  .science-grid { grid-template-columns: 1fr; gap: 36px; }
  .benefits { grid-template-columns: 1fr; }
  .compare { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
}
@media (max-width: 560px) {
  .form-row { grid-template-columns: 1fr; }
  .hero { padding: 92px 0 72px; }
  .hero-stats { gap: 18px; }
  .stat-divider { display: none; }
  .lead-form { padding: 24px; }
  .footer-inner { flex-direction: column; gap: 32px; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}