/* ============================================================
   GrowProBooks — Site Stylesheet
   Palette: deep evergreen, warm cream, antique gold
   ============================================================ */
:root {
  --green-900: #10281f;
  --green-800: #17382c;
  --green-700: #1e4a3a;
  --green-600: #2a614c;
  --green-100: #e4efe8;
  --cream: #faf6ef;
  --cream-dark: #f2ebdd;
  --gold: #c8963e;
  --gold-light: #ebc495;
  --teal: #a6d4d0;
  --ink: #26302c;
  --ink-soft: #5b6660;
  --white: #ffffff;
  --radius: 14px;
  --shadow: 0 10px 40px rgba(16, 40, 31, 0.10);
  --shadow-lg: 0 24px 60px rgba(16, 40, 31, 0.16);
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, "Segoe UI", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { width: min(1160px, 92%); margin: 0 auto; }

h1, h2, h3, .display { font-family: var(--font-display); font-weight: 600; line-height: 1.15; color: var(--green-900); }
h1 { font-size: clamp(2.4rem, 5.2vw, 4rem); }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); }
h3 { font-size: 1.3rem; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--gold);
}
.eyebrow::before { content: ""; width: 34px; height: 2px; background: var(--gold); }

.lead { font-size: 1.13rem; color: var(--ink-soft); max-width: 640px; }

section { padding: 96px 0; }
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head p { margin-top: 14px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 30px; border-radius: 999px;
  font-weight: 600; font-size: 0.98rem; cursor: pointer;
  border: 2px solid transparent; transition: all .25s ease;
}
.btn-gold { background: var(--gold); color: var(--green-900); }
.btn-gold:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-outline { border-color: var(--green-700); color: var(--green-800); background: transparent; }
.btn-outline:hover { background: var(--green-800); color: var(--cream); transform: translateY(-2px); }
.btn-outline-light { border-color: rgba(255,255,255,.5); color: var(--cream); background: transparent; }
.btn-outline-light:hover { background: var(--cream); color: var(--green-900); }

/* ---------- Header ---------- */
.topbar {
  background: var(--green-900); color: rgba(255,255,255,.85);
  font-size: 0.83rem; padding: 8px 0;
}
.topbar .container { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.topbar a:hover { color: var(--gold-light); }

header.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250, 246, 239, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(16,40,31,.08);
  transition: box-shadow .3s;
}
header.site-header.scrolled { box-shadow: 0 6px 30px rgba(16,40,31,.10); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; }

.logo { display: flex; align-items: center; gap: 12px; }
.logo img.logo-mark { height: 44px; width: auto; }
.logo-text { font-family: var(--font-body); font-size: 1.32rem; font-weight: 800; letter-spacing: -0.01em; color: #160d03; }
.logo-text span { color: var(--gold); }
.logo-tag { font-size: 0.68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); }

/* ---------- Photos ---------- */
.ind-photo { border-radius: 12px; overflow: hidden; margin-bottom: 20px; }
.ind-photo img { width: 100%; height: 165px; object-fit: cover; transition: transform .5s; }
.industry-card:hover .ind-photo img { transform: scale(1.05); }
.hero-photo { border-radius: 14px; overflow: hidden; margin: -34px -34px 24px; }
.hero-photo img { width: 100%; height: 210px; object-fit: cover; }
.blog-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.blog-card:hover .blog-thumb img { transform: scale(1.06); }

nav.main-nav ul { display: flex; gap: 34px; }
nav.main-nav a { font-weight: 500; font-size: 0.95rem; position: relative; padding: 6px 0; }
nav.main-nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; background: var(--gold); transition: width .25s;
}
nav.main-nav a:hover::after, nav.main-nav a.active::after { width: 100%; }

.nav-cta { display: flex; align-items: center; gap: 14px; }
.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.hamburger span { display: block; width: 26px; height: 2.5px; background: var(--green-900); margin: 5px 0; border-radius: 2px; transition: .3s; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1100px 600px at 85% -10%, rgba(200,150,62,.16), transparent 60%),
    linear-gradient(160deg, var(--green-900) 0%, var(--green-800) 55%, var(--green-700) 100%);
  color: var(--cream); padding: 110px 0 130px;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 26px 26px;
}
.hero .container { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr .85fr; gap: 60px; align-items: center; }
.hero h1 { color: var(--cream); }
.hero h1 em { font-style: italic; color: var(--gold-light); }
.hero .lead { color: rgba(255,255,255,.78); margin: 22px 0 34px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18);
  padding: 8px 18px; border-radius: 999px; font-size: .85rem; margin-bottom: 24px;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(200,150,62,.5);} 50% { box-shadow: 0 0 0 8px rgba(200,150,62,0);} }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-note { margin-top: 18px; font-size: .85rem; color: rgba(255,255,255,.55); }

.hero-card {
  background: var(--white); color: var(--ink); border-radius: 20px;
  padding: 34px; box-shadow: var(--shadow-lg);
  transform: rotate(1.5deg); transition: transform .4s;
}
.hero-card:hover { transform: rotate(0deg) scale(1.01); }
.hero-card h3 { display: flex; justify-content: space-between; align-items: center; font-size: 1.05rem; margin-bottom: 20px; }
.hero-card h3 span { font-size: .72rem; background: var(--green-100); color: var(--green-700); padding: 4px 12px; border-radius: 999px; font-family: var(--font-body); font-weight: 700; letter-spacing: .08em; }
.mini-row { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px dashed rgba(16,40,31,.12); font-size: .93rem; }
.mini-row:last-of-type { border-bottom: none; }
.mini-row strong { color: var(--green-700); }
.mini-bar { height: 8px; border-radius: 99px; background: var(--cream-dark); margin-top: 6px; overflow: hidden; }
.mini-bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--green-600), var(--gold)); border-radius: 99px; width: 0; transition: width 1.2s ease .4s; }

/* ---------- Stats strip ---------- */
.stats-strip { background: var(--green-900); color: var(--cream); padding: 0; }
.stats-strip .container {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-left: 1px solid rgba(255,255,255,.1);
}
.stat { padding: 38px 28px; border-right: 1px solid rgba(255,255,255,.1); }
.stat .num { font-family: var(--font-display); font-size: 2.3rem; font-weight: 700; color: var(--gold-light); }
.stat .lbl { font-size: .85rem; color: rgba(255,255,255,.65); margin-top: 4px; }

/* ---------- Services ---------- */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.service-card {
  background: var(--white); border-radius: var(--radius);
  padding: 34px 30px; box-shadow: var(--shadow);
  border: 1px solid rgba(16,40,31,.05);
  transition: transform .3s, box-shadow .3s; position: relative; overflow: hidden;
}
.service-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--green-600), var(--gold));
  transform: scaleX(0); transform-origin: left; transition: transform .35s;
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 58px; height: 58px; border-radius: 14px; display: grid; place-items: center;
  background: var(--green-100); font-size: 1.5rem; margin-bottom: 20px;
}
.service-card h3 { margin-bottom: 10px; }
.service-card p { font-size: .95rem; color: var(--ink-soft); }

/* ---------- Industries ---------- */
.industries { background: var(--green-800); color: var(--cream); }
.industries h2, .industries h3 { color: var(--cream); }
.industries .lead { color: rgba(255,255,255,.7); }
.industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.industry-card {
  border-radius: 18px; padding: 38px 32px; position: relative; overflow: hidden;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  transition: background .3s, transform .3s;
}
.industry-card:hover { background: rgba(255,255,255,.1); transform: translateY(-6px); }
.industry-card .ind-icon { font-size: 2.2rem; margin-bottom: 18px; }
.industry-card h3 { font-size: 1.45rem; margin-bottom: 8px; }
.industry-card .ind-sub { color: var(--gold-light); font-size: .85rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 18px; }
.industry-card ul { display: grid; gap: 10px; }
.industry-card li { display: flex; gap: 10px; font-size: .93rem; color: rgba(255,255,255,.8); }
.industry-card li::before { content: "✓"; color: var(--gold); font-weight: 700; }
.featured-tag {
  position: absolute; top: 18px; right: -34px; transform: rotate(38deg);
  background: var(--gold); color: var(--green-900); font-size: .68rem; font-weight: 800;
  letter-spacing: .1em; padding: 5px 42px;
}

/* ---------- Tools / software ---------- */
.tools { padding: 72px 0; }
.tools-groups { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; max-width: 900px; margin: 0 auto; }
.tools-group { background: var(--white); border-radius: var(--radius); padding: 30px 34px; box-shadow: var(--shadow); text-align: center; }
.tools-group h4 { font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; color: var(--gold); margin-bottom: 18px; }
.tool-badges { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.tool-badge {
  padding: 10px 20px; border-radius: 999px; font-weight: 600; font-size: .95rem;
  background: var(--green-100); color: var(--green-800); border: 1px solid rgba(16,40,31,.08);
  transition: transform .2s, background .2s;
}
.tool-badge:hover { transform: translateY(-2px); background: var(--teal); }
.tools-note { text-align: center; margin-top: 26px; color: var(--ink-soft); font-size: .95rem; }
@media (max-width: 680px) { .tools-groups { grid-template-columns: 1fr; } }

/* ---------- Calculator ---------- */
.calculator { background: var(--cream-dark); }
.calc-wrap {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
  background: var(--white); border-radius: 22px; overflow: hidden; box-shadow: var(--shadow-lg);
}
.calc-inputs { padding: 48px; }
.calc-inputs h3 { font-size: 1.5rem; margin-bottom: 8px; }
.calc-inputs > p { color: var(--ink-soft); font-size: .95rem; margin-bottom: 30px; }
.calc-field { margin-bottom: 28px; }
.calc-field label { display: flex; justify-content: space-between; font-weight: 600; font-size: .93rem; margin-bottom: 12px; }
.calc-field label output { color: var(--gold); font-weight: 700; }
input[type="range"] {
  width: 100%; appearance: none; -webkit-appearance: none; height: 6px; border-radius: 99px;
  background: linear-gradient(90deg, var(--green-600) var(--fill,50%), #e5e0d5 var(--fill,50%));
  outline: none; cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 22px; height: 22px; border-radius: 50%;
  background: var(--white); border: 3px solid var(--green-700);
  box-shadow: 0 2px 8px rgba(0,0,0,.2); cursor: grab;
}
.calc-result {
  background: linear-gradient(160deg, var(--green-800), var(--green-900));
  color: var(--cream); padding: 48px; display: flex; flex-direction: column; justify-content: center;
}
.calc-result .cr-label { font-size: .8rem; letter-spacing: .16em; text-transform: uppercase; color: var(--gold-light); }
.calc-result .cr-big { font-family: var(--font-display); font-size: clamp(2.6rem, 4.5vw, 3.6rem); font-weight: 700; color: var(--white); margin: 6px 0 4px; }
.calc-result .cr-sub { color: rgba(255,255,255,.65); font-size: .92rem; margin-bottom: 26px; }
.cr-divider { height: 1px; background: rgba(255,255,255,.15); margin: 22px 0; }
.cr-row { display: flex; justify-content: space-between; font-size: .95rem; padding: 7px 0; color: rgba(255,255,255,.85); }
.cr-row strong { color: var(--gold-light); }
.calc-result .btn { margin-top: 28px; align-self: flex-start; }

/* ---------- Why us / values ---------- */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.value-card { text-align: center; padding: 36px 24px; background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); transition: transform .3s; }
.value-card:hover { transform: translateY(-6px); }
.value-card .v-icon { font-size: 2rem; margin-bottom: 14px; }
.value-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.value-card p { font-size: .88rem; color: var(--ink-soft); }

/* ---------- Testimonials ---------- */
.testimonials { background: var(--green-100); overflow: hidden; }
.testi-track { display: flex; transition: transform .5s ease; }
.testi-slide { min-width: 100%; padding: 10px; }
.testi-card {
  background: var(--white); border-radius: 20px; padding: 48px;
  box-shadow: var(--shadow); max-width: 780px; margin: 0 auto; text-align: center;
}
.testi-card .stars { color: var(--gold); font-size: 1.2rem; letter-spacing: 4px; margin-bottom: 20px; }
.testi-card blockquote { font-family: var(--font-display); font-size: 1.3rem; font-style: italic; color: var(--green-900); line-height: 1.5; }
.testi-card .who { margin-top: 24px; font-weight: 700; color: var(--green-800); }
.testi-card .who span { display: block; font-weight: 400; font-size: .85rem; color: var(--ink-soft); }
.testi-dots { display: flex; justify-content: center; gap: 10px; margin-top: 30px; }
.testi-dots button { width: 10px; height: 10px; border-radius: 50%; border: none; background: rgba(16,40,31,.2); cursor: pointer; transition: .3s; }
.testi-dots button.active { background: var(--gold); transform: scale(1.35); }

/* ---------- Process ---------- */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.process-step { position: relative; padding: 30px 24px 24px; background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); }
.process-step .p-num { font-family: var(--font-display); font-size: 2.6rem; font-weight: 700; color: var(--gold-light); line-height: 1; margin-bottom: 12px; }
.process-step h3 { font-size: 1.05rem; margin-bottom: 6px; }
.process-step p { font-size: .88rem; color: var(--ink-soft); }

/* ---------- Blog ---------- */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.blog-card {
  background: var(--white); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s; display: flex; flex-direction: column;
}
.blog-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.blog-thumb { height: 170px; display: grid; place-items: center; font-size: 3rem; }
.bt-1 { background: linear-gradient(135deg, #e8dcc8, #d9c9a8); }
.bt-2 { background: linear-gradient(135deg, #dce8e0, #b8d0c2); }
.bt-3 { background: linear-gradient(135deg, #e4e0d4, #cfd8c8); }
.blog-body { padding: 26px; flex: 1; display: flex; flex-direction: column; }
.blog-meta { font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--gold); margin-bottom: 10px; }
.blog-body h3 { font-size: 1.15rem; margin-bottom: 10px; }
.blog-body p { font-size: .9rem; color: var(--ink-soft); flex: 1; }
.blog-link { margin-top: 18px; font-weight: 700; font-size: .9rem; color: var(--green-700); }
.blog-link:hover { color: var(--gold); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item { background: var(--white); border-radius: 12px; margin-bottom: 14px; box-shadow: var(--shadow); overflow: hidden; }
.faq-q {
  width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  padding: 22px 28px; font-family: var(--font-body); font-size: 1.02rem; font-weight: 600; color: var(--green-900);
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-q::after { content: "+"; font-size: 1.5rem; color: var(--gold); transition: transform .3s; flex-shrink: 0; }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a p { padding: 0 28px 24px; color: var(--ink-soft); font-size: .95rem; }

/* ---------- Contact ---------- */
.contact { background: var(--green-900); color: var(--cream); }
.contact h2 { color: var(--cream); }
.contact .lead { color: rgba(255,255,255,.7); }
.contact-wrap { display: grid; grid-template-columns: .9fr 1.1fr; gap: 60px; align-items: start; }
.contact-info { display: grid; gap: 22px; margin-top: 36px; }
.ci-item { display: flex; gap: 16px; align-items: flex-start; }
.ci-icon { width: 46px; height: 46px; border-radius: 12px; background: rgba(255,255,255,.08); display: grid; place-items: center; font-size: 1.2rem; flex-shrink: 0; }
.ci-item h4 { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--gold-light); margin-bottom: 2px; }
.ci-item p { color: rgba(255,255,255,.85); font-size: .97rem; }

.contact-form { background: var(--white); border-radius: 20px; padding: 42px; color: var(--ink); box-shadow: var(--shadow-lg); }
.contact-form h3 { margin-bottom: 6px; }
.contact-form > p { font-size: .9rem; color: var(--ink-soft); margin-bottom: 26px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: .82rem; font-weight: 600; margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 13px 16px; border: 1.5px solid #ded8ca; border-radius: 10px;
  font-family: var(--font-body); font-size: .95rem; background: var(--cream);
  transition: border-color .2s; outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--gold); background: var(--white); }
.contact-form .btn { width: 100%; justify-content: center; }

/* ---------- Footer ---------- */
footer { background: #0b1d16; color: rgba(255,255,255,.6); padding: 64px 0 0; font-size: .92rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; padding-bottom: 48px; }
.footer-grid h4 { color: var(--cream); font-size: .85rem; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 18px; }
.footer-grid ul { display: grid; gap: 10px; }
.footer-grid a:hover { color: var(--gold-light); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 22px 0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: .82rem; }

/* ---------- Floating CTA ---------- */
.float-cta {
  position: fixed; bottom: 26px; right: 26px; z-index: 90;
  background: var(--gold); color: var(--green-900); font-weight: 700;
  padding: 15px 26px; border-radius: 999px; box-shadow: 0 12px 32px rgba(200,150,62,.4);
  display: flex; align-items: center; gap: 8px; font-size: .92rem;
  opacity: 0; transform: translateY(20px); pointer-events: none; transition: .35s;
}
.float-cta.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.float-cta:hover { transform: translateY(-3px); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: .1s; } .reveal-d2 { transition-delay: .2s; } .reveal-d3 { transition-delay: .3s; }

/* ---------- Blog article pages ---------- */
.article-hero { background: linear-gradient(160deg, var(--green-900), var(--green-700)); color: var(--cream); padding: 80px 0 70px; }
.article-hero h1 { color: var(--cream); font-size: clamp(2rem, 4.5vw, 3.1rem); max-width: 820px; }
.article-hero .art-meta { color: var(--gold-light); font-size: .85rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 18px; }
.article-body { max-width: 760px; margin: 0 auto; padding: 70px 0 90px; }
.article-body h2 { font-size: 1.7rem; margin: 44px 0 16px; }
.article-body h3 { margin: 32px 0 12px; }
.article-body p { margin-bottom: 18px; color: #3c4642; }
.article-body ul, .article-body ol { margin: 0 0 18px 24px; list-style: disc; color: #3c4642; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 8px; }
.article-cta {
  background: var(--green-100); border-left: 4px solid var(--gold);
  border-radius: 12px; padding: 28px 30px; margin: 40px 0;
}
.article-cta h3 { margin-top: 0; }
.article-cta .btn { margin-top: 14px; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .hero .container { grid-template-columns: 1fr; gap: 44px; }
  .services-grid, .industry-grid, .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid, .process-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-strip .container { grid-template-columns: repeat(2, 1fr); }
  .calc-wrap, .contact-wrap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  section { padding: 64px 0; }
  .services-grid, .industry-grid, .blog-grid, .why-grid, .process-grid { grid-template-columns: 1fr; }
  nav.main-nav {
    position: fixed; inset: 0; top: 0; background: var(--cream);
    display: grid; place-items: center; transform: translateX(100%); transition: transform .35s; z-index: 99;
  }
  nav.main-nav.open { transform: translateX(0); }
  nav.main-nav ul { flex-direction: column; text-align: center; gap: 26px; font-size: 1.3rem; }
  .hamburger { display: block; z-index: 100; position: relative; }
  .hamburger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
  .hamburger.open span:nth-child(2) { opacity: 0; }
  .hamburger.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }
  .nav-cta .btn { display: none; }
  .topbar { display: none; }
  .calc-inputs, .calc-result, .contact-form, .testi-card { padding: 30px 24px; }
  .form-row { grid-template-columns: 1fr; }
  .float-cta { bottom: 16px; right: 16px; padding: 13px 20px; font-size: .85rem; }
}